--- /dev/null
+output/
+win32port/ipch/
+win32port/Debug*/
+win32port/Release*/
+win32port/server/Debug*/
+win32port/server/Release*/
+win32port/client/Debug*/
+win32port/client/Release*/
+win32port/libwebsocketswin32/Debug*/
+win32port/libwebsocketswin32/Release*/
+win32port/zlib/Debug*/
+win32port/zlib/Release*/
+*.vcxproj.user
+*.opensdf
+*.sdf
+*.suo
--- /dev/null
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--- /dev/null
+Installation Instructions
+*************************
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+
+ Some systems require unusual options for compilation or linking that
+the `configure' script does not know about. Run `./configure --help'
+for details on some of the pertinent environment variables.
+
+ You can give `configure' initial values for configuration parameters
+by setting variables in the command line or in the environment. Here
+is an example:
+
+ ./configure CC=c99 CFLAGS=-g LIBS=-lposix
+
+ *Note Defining Variables::, for more details.
+
+Compiling For Multiple Architectures
+====================================
+
+ You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory. To do this, you can use GNU `make'. `cd' to the
+directory where you want the object files and executables to go and run
+the `configure' script. `configure' automatically checks for the
+source code in the directory that `configure' is in and in `..'. This
+is known as a "VPATH" build.
+
+ With a non-GNU `make', it is safer to compile the package for one
+architecture at a time in the source code directory. After you have
+installed the package for one architecture, use `make distclean' before
+reconfiguring for another architecture.
+
+ On MacOS X 10.5 and later systems, you can create libraries and
+executables that work on multiple system types--known as "fat" or
+"universal" binaries--by specifying multiple `-arch' options to the
+compiler but only a single `-arch' option to the preprocessor. Like
+this:
+
+ ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+ CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+ CPP="gcc -E" CXXCPP="g++ -E"
+
+ This is not guaranteed to produce working output in all cases, you
+may have to build one architecture at a time and combine the results
+using the `lipo' tool if you have problems.
+
+Installation Names
+==================
+
+ By default, `make install' installs the package's commands under
+`/usr/local/bin', include files under `/usr/local/include', etc. You
+can specify an installation prefix other than `/usr/local' by giving
+`configure' the option `--prefix=PREFIX', where PREFIX must be an
+absolute file name.
+
+ You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files. If you
+pass the option `--exec-prefix=PREFIX' to `configure', the package uses
+PREFIX as the prefix for installing programs and libraries.
+Documentation and other data files still use the regular prefix.
+
+ In addition, if you use an unusual directory layout you can give
+options like `--bindir=DIR' to specify different values for particular
+kinds of files. Run `configure --help' for a list of the directories
+you can set and what kinds of files go in them. In general, the
+default for these options is expressed in terms of `${prefix}', so that
+specifying just `--prefix' will affect all of the other directory
+specifications that were not explicitly provided.
+
+ The most portable way to affect installation locations is to pass the
+correct locations to `configure'; however, many packages provide one or
+both of the following shortcuts of passing variable assignments to the
+`make install' command line to change installation locations without
+having to reconfigure or recompile.
+
+ The first method involves providing an override variable for each
+affected directory. For example, `make install
+prefix=/alternate/directory' will choose an alternate location for all
+directory configuration variables that were expressed in terms of
+`${prefix}'. Any directories that were specified during `configure',
+but not in terms of `${prefix}', must each be overridden at install
+time for the entire installation to be relocated. The approach of
+makefile variable overrides for each directory variable is required by
+the GNU Coding Standards, and ideally causes no recompilation.
+However, some platforms have known limitations with the semantics of
+shared libraries that end up requiring recompilation when using this
+method, particularly noticeable in packages that use GNU Libtool.
+
+ The second method involves providing the `DESTDIR' variable. For
+example, `make install DESTDIR=/alternate/directory' will prepend
+`/alternate/directory' before all installation names. The approach of
+`DESTDIR' overrides is not required by the GNU Coding Standards, and
+does not work on platforms that have drive letters. On the other hand,
+it does better at avoiding recompilation issues, and works well even
+when some directory options were not specified in terms of `${prefix}'
+at `configure' time.
+
+Optional Features
+=================
+
+ If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving `configure' the
+option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
+
+ Some packages pay attention to `--enable-FEATURE' options to
+`configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to `--with-PACKAGE' options, where PACKAGE
+is something like `gnu-as' or `x' (for the X Window System). The
+`README' should mention any `--enable-' and `--with-' options that the
+package recognizes.
+
+ For packages that use the X Window System, `configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the `configure' options `--x-includes=DIR' and
+`--x-libraries=DIR' to specify their locations.
+
+ Some packages offer the ability to configure how verbose the
+execution of `make' will be. For these packages, running `./configure
+--enable-silent-rules' sets the default to minimal output, which can be
+overridden with `make V=1'; while running `./configure
+--disable-silent-rules' sets the default to verbose, which can be
+overridden with `make V=0'.
+
+Particular systems
+==================
+
+ On HP-UX, the default C compiler is not ANSI C compatible. If GNU
+CC is not installed, it is recommended to use the following options in
+order to use an ANSI C compiler:
+
+ ./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
+
+and if that doesn't work, install pre-built binaries of GCC for HP-UX.
+
+ On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
+parse its `<wchar.h>' header file. The option `-nodtk' can be used as
+a workaround. If GNU CC is not installed, it is therefore recommended
+to try
+
+ ./configure CC="cc"
+
+and if that doesn't work, try
+
+ ./configure CC="cc -nodtk"
+
+ On Solaris, don't put `/usr/ucb' early in your `PATH'. This
+directory contains several dysfunctional programs; working variants of
+these programs are available in `/usr/bin'. So, if you need `/usr/ucb'
+in your `PATH', put it _after_ `/usr/bin'.
+
+ On Haiku, software installed for all users goes in `/boot/common',
+not `/usr/local'. It is recommended to use the following options:
+
+ ./configure --prefix=/boot/common
+
+Specifying the System Type
+==========================
+
+ There may be some features `configure' cannot figure out
+automatically, but needs to determine by the type of machine the package
+will run on. Usually, assuming the package is built to be run on the
+_same_ architectures, `configure' can figure that out, but if it prints
+a message saying it cannot guess the machine type, give it the
+`--build=TYPE' option. TYPE can either be a short name for the system
+type, such as `sun4', or a canonical name which has the form:
+
+ CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+ OS
+ KERNEL-OS
+
+ See the file `config.sub' for the possible values of each field. If
+`config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+ If you are _building_ compiler tools for cross-compiling, you should
+use the option `--target=TYPE' to select the type of system they will
+produce code for.
+
+ If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with `--host=TYPE'.
+
+Sharing Defaults
+================
+
+ If you want to set default values for `configure' scripts to share,
+you can create a site shell script called `config.site' that gives
+default values for variables like `CC', `cache_file', and `prefix'.
+`configure' looks for `PREFIX/share/config.site' if it exists, then
+`PREFIX/etc/config.site' if it exists. Or, you can set the
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+A warning: not all `configure' scripts look for a site script.
+
+Defining Variables
+==================
+
+ Variables not defined in a site shell script can be set in the
+environment passed to `configure'. However, some packages may run
+configure again during the build, and the customized values of these
+variables may be lost. In order to avoid this problem, you should set
+them in the `configure' command line, using `VAR=value'. For example:
+
+ ./configure CC=/usr/local2/bin/gcc
+
+causes the specified `gcc' to be used as the C compiler (unless it is
+overridden in the site shell script).
+
+Unfortunately, this technique does not work for `CONFIG_SHELL' due to
+an Autoconf bug. Until the bug is fixed you can use this workaround:
+
+ CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
+
+`configure' Invocation
+======================
+
+ `configure' recognizes the following options to control how it
+operates.
+
+`--help'
+`-h'
+ Print a summary of all of the options to `configure', and exit.
+
+`--help=short'
+`--help=recursive'
+ Print a summary of the options unique to this package's
+ `configure', and exit. The `short' variant lists options used
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+ also present in any nested packages.
+
+`--version'
+`-V'
+ Print the version of Autoconf used to generate the `configure'
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+
+`--cache-file=FILE'
+ Enable the cache: use and save the results of the tests in FILE,
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+
+`--config-cache'
+`-C'
+ Alias for `--cache-file=config.cache'.
+
+`--quiet'
+`--silent'
+`-q'
+ Do not print messages saying which checks are being made. To
+ suppress all normal output, redirect it to `/dev/null' (any error
+ messages will still be shown).
+
+`--srcdir=DIR'
+ Look for the package's source code in directory DIR. Usually
+ `configure' can determine that directory automatically.
+
+`--prefix=DIR'
+ Use DIR as the installation prefix. *note Installation Names::
+ for more details, including other options available for fine-tuning
+ the installation locations.
+
+`--no-create'
+`-n'
+ Run the configure checks, but stop before creating any output
+ files.
+
+`configure' also accepts some other, not widely useful, options. Run
+`configure --help' for more details.
+
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+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+Using test-server as a quickstart
+---------------------------------
+
+You need to regenerate the autotools and libtoolize stuff for your system
+
+$ autoreconf
+$ libtoolize
+
+Then for a Fedora x86_86 box, the following config line was
+needed:
+
+ ./configure --prefix=/usr --libdir=/usr/lib64 --enable-openssl
+
+For Apple systems, Christopher Baker reported that this is needed
+(and I was told separately enabling openssl makes trouble somehow)
+
+./configure CC="gcc -arch i386 -arch x86_64" CXX="g++ -arch i386 -arch
+x86_64" CPP="gcc -E" CXXCPP="g++ -E" --enable-nofork
+
+For mingw build, I did the following to get working build, ping test is
+disabled when building this way
+
+1) install mingw64_w32 compiler packages from Fedora
+2) additionally install mingw64-zlib package
+3) ./configure --prefix=/usr --enable-mingw --host=x86_64-w64-mingw32
+4) make
+
+otherwise if /usr/local/... and /usr/local/lib are OK then...
+
+$ ./configure
+$ make clean
+$ make
+$ sudo make install
+$ libwebsockets-test-server
+
+should be enough to get a test server listening on port 7861.
+
+There are a couple of other possible configure options
+
+--enable-nofork disables the fork into the background API
+ and removes all references to fork() and
+ pr_ctl() from the sources. Use it if your
+ platform doesn't support forking.
+
+--enable-libcrypto by default libwebsockets uses its own
+ built-in md5 and sha-1 implementation for
+ simplicity. However the libcrypto ones
+ may be faster, and in a distro context it
+ may be highly desirable to use a common
+ library implementation for ease of security
+ upgrades. Give this configure option
+ to disable the built-in ones and force use
+ of the libcrypto (part of openssl) ones.
+
+--with-client-cert-dir=dir tells the client ssl support where to
+ look for trust certificates to validate
+ the remote certificate against.
+
+--enable-noping Don't try to build the ping test app
+ It needs some unixy environment that
+ may choke in other build contexts, this
+ lets you cleanly stop it being built
+
+--enable-x-google-mux Enable experimental x-google-mux support
+ in the build (see notes later in document)
+
+Testing server with a browser
+-----------------------------
+
+If you point your browser (eg, Chrome) to
+
+ http://127.0.0.1:7681
+
+It will fetch a script in the form of test.html, and then run the
+script in there on the browser to open a websocket connection.
+Incrementing numbers should appear in the browser display.
+
+Using SSL on the server side
+----------------------------
+
+To test it using SSL/WSS, just run the test server with
+
+$ libwebsockets-test-server --ssl
+
+and use the URL
+
+ https://127.0.0.1:7681
+
+The connection will be entirely encrypted using some generated
+certificates that your browser will not accept, since they are
+not signed by any real Certificate Authority. Just accept the
+certificates in the browser and the connection will proceed
+in first https and then websocket wss, acting exactly the
+same.
+
+test-server.c is all that is needed to use libwebsockets for
+serving both the script html over http and websockets.
+
+
+Forkless operation
+------------------
+
+If your target device does not offer fork(), you can use
+libwebsockets from your own main loop instead. Use the
+configure option --nofork and simply call libwebsocket_service()
+from your own main loop as shown in the test app sources.
+
+
+Testing websocket client support
+--------------------------------
+
+If you run the test server as described above, you can also
+connect to it using the test client as well as a browser.
+
+$ libwebsockets-test-client localhost
+
+will by default connect to the test server on localhost:7681
+and print the dumb increment number from the server at the
+same time as drawing random circles in the mirror protocol;
+if you connect to the test server using a browser at the
+same time you will be able to see the circles being drawn.
+
+
+Testing SSL on the client side
+------------------------------
+
+To test SSL/WSS client action, just run the client test with
+
+$ libwebsockets-test-client localhost --ssl
+
+By default the client test applet is set to accept selfsigned
+certificates used by the test server, this is indicated by the
+use_ssl var being set to 2. Set it to 1 to reject any server
+certificate that it doesn't have a trusted CA cert for.
+
+
+Using the websocket ping utility
+--------------------------------
+
+libwebsockets-test-ping connects as a client to a remote
+websocket server using 04 protocol and pings it like the
+normal unix ping utility.
+
+$ libwebsockets-test-ping localhost
+handshake OK for protocol lws-mirror-protocol
+Websocket PING localhost.localdomain (127.0.0.1) 64 bytes of data.
+64 bytes from localhost: req=1 time=0.1ms
+64 bytes from localhost: req=2 time=0.1ms
+64 bytes from localhost: req=3 time=0.1ms
+64 bytes from localhost: req=4 time=0.2ms
+64 bytes from localhost: req=5 time=0.1ms
+64 bytes from localhost: req=6 time=0.2ms
+64 bytes from localhost: req=7 time=0.2ms
+64 bytes from localhost: req=8 time=0.1ms
+^C
+--- localhost.localdomain websocket ping statistics ---
+8 packets transmitted, 8 received, 0% packet loss, time 7458ms
+rtt min/avg/max = 0.110/0.185/0.218 ms
+$
+
+By default it sends 64 byte payload packets using the 04
+PING packet opcode type. You can change the payload size
+using the -s= flag, up to a maximum of 125 mandated by the
+04 standard.
+
+Using the lws-mirror protocol that is provided by the test
+server, libwebsockets-test-ping can also use larger payload
+sizes up to 4096 is BINARY packets; lws-mirror will copy
+them back to the client and they appear as a PONG. Use the
+-m flag to select this operation.
+
+The default interval between pings is 1s, you can use the -i=
+flag to set this, including fractions like -i=0.01 for 10ms
+interval.
+
+Before you can even use the PING opcode that is part of the
+standard, you must complete a handshake with a specified
+protocol. By default lws-mirror-protocol is used which is
+supported by the test server. But if you are using it on
+another server, you can specify the protcol to handshake with
+by --protocol=protocolname
+
+
+Fraggle test app
+----------------
+
+By default it runs in server mode
+
+$ libwebsockets-test-fraggle
+libwebsockets test fraggle
+(C) Copyright 2010-2011 Andy Green <andy@warmcat.com> licensed under LGPL2.1
+ Compiled with SSL support, not using it
+ Listening on port 7681
+server sees client connect
+accepted v06 connection
+Spamming 360 random fragments
+Spamming session over, len = 371913. sum = 0x2D3C0AE
+Spamming 895 random fragments
+Spamming session over, len = 875970. sum = 0x6A74DA1
+...
+
+You need to run a second session in client mode, you have to
+give the -c switch and the server address at least:
+
+$ libwebsockets-test-fraggle -c localhost
+libwebsockets test fraggle
+(C) Copyright 2010-2011 Andy Green <andy@warmcat.com> licensed under LGPL2.1
+ Client mode
+Connecting to localhost:7681
+denied deflate-stream extension
+handshake OK for protocol fraggle-protocol
+client connects to server
+EOM received 371913 correctly from 360 fragments
+EOM received 875970 correctly from 895 fragments
+EOM received 247140 correctly from 258 fragments
+EOM received 695451 correctly from 692 fragments
+...
+
+The fraggle test sends a random number up to 1024 fragmented websocket frames
+each of a random size between 1 and 2001 bytes in a single message, then sends
+a checksum and starts sending a new randomly sized and fragmented message.
+
+The fraggle test client receives the same message fragments and computes the
+same checksum using websocket framing to see when the message has ended. It
+then accepts the server checksum message and compares that to its checksum.
+
+
+proxy support
+-------------
+
+The http_proxy environment variable is respected by the client
+connection code for both ws:// and wss://. It doesn't support
+authentication yet.
+
+You use it like this
+
+export http_proxy=myproxy.com:3128
+libwebsockets-test-client someserver.com
+
+
+Websocket version supported
+---------------------------
+
+The websocket client code is 04 and 05 version, the server
+supports 00/76 in text mode and 04 and 05 dynamically
+per-connection depending on the version of the
+client / browser.
+
+
+External Polling Loop support
+-----------------------------
+
+libwebsockets maintains an internal poll() array for all of its
+sockets, but you can instead integrate the sockets into an
+external polling array. That's needed if libwebsockets will
+cooperate with an existing poll array maintained by another
+server.
+
+Four callbacks LWS_CALLBACK_ADD_POLL_FD, LWS_CALLBACK_DEL_POLL_FD,
+LWS_CALLBACK_SET_MODE_POLL_FD and LWS_CALLBACK_CLEAR_MODE_POLL_FD
+appear in the callback for protocol 0 and allow interface code to
+manage socket descriptors in other poll loops.
+
+
+x-google-mux support
+--------------------
+
+Experimental and super-preliminary x-google-mux support is available if
+enabled in ./configure with --enable-x-google-mux. Note that when changing
+configurations, you will need to do a make distclean before, then the new
+configure and then make ; make install. Don't forget the necessary other
+flags for your platform as described at the top of the readme.
+
+It has the following notes:
+
+ 1) To enable it, reconfigure with --enable-x-google-mux
+
+ 2) It deviates from the google standard by sending full
+ headers in the addchannel subcommand rather than just
+ changed ones from original connect
+
+ 3) Quota is not implemented yet
+
+However despite those caveats, in fact it can run the
+test client reliably over one socket (both dumb-increment
+and lws-mirror-protocol), you can open a browser on the
+same test server too and see the circles, etc.
+
+It also works compatibly with deflate-stream automatically.
+
+2012-04-12 Andy Green <andy@warmcat.com>
+
--- /dev/null
+# -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.66])
+AC_INIT(libwebsockets, 0.3, andy@warmcat.com)
+AC_CONFIG_SRCDIR([test-server/test-server.c])
+AC_CONFIG_HEADERS([config.h])
+
+AM_INIT_AUTOMAKE([-Wall -Werror foreign])
+LT_INIT(shared)
+
+#AX_PTHREAD
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_INSTALL
+AC_PROG_MAKE_SET
+AC_CONFIG_MACRO_DIR([m4])
+
+
+#
+#
+#
+AC_ARG_ENABLE(openssl,
+ [ --enable-openssl Enables https support and needs openssl libs],
+ [ openssl=yes
+ ])
+
+if test "x$openssl" = "xyes" ; then
+AC_CHECK_LIB([ssl], [SSL_library_init])
+CFLAGS="$CFLAGS -DLWS_OPENSSL_SUPPORT"
+fi
+
+#
+#
+#
+AC_ARG_ENABLE(nofork,
+ [ --enable-nofork Disables fork-related options],
+ [ nofork=yes
+ ])
+
+if test "x$nofork" = "xyes" ; then
+CFLAGS="$CFLAGS -DLWS_NO_FORK"
+else
+AC_FUNC_FORK
+fi
+
+#
+#
+#
+AC_ARG_ENABLE(libcrypto,
+ [ --enable-libcrypto Use libcrypto MD5 and SHA1 implementations],
+ [ libcrypto=yes
+ ])
+
+if test "x$libcrypto" = "xyes" ; then
+CFLAGS="$CFLAGS -DLWS_LIBCRYPTO"
+LDFLAGS="$LDFLAGS -lcrypto"
+fi
+AM_CONDITIONAL(LIBCRYPTO, test x$libcrypto = xyes)
+
+
+#
+#
+#
+AC_ARG_ENABLE(x-google-mux,
+ [ --enable-x-google-mux Build experimental x-google-mux],
+ [ x_google_mux=yes
+ ])
+if test "x$x_google_mux" = "xyes" ; then
+CFLAGS="$CFLAGS -DLWS_EXT_GOOGLE_MUX"
+fi
+AM_CONDITIONAL(EXT_GOOGLE_MUX, test x$x_google_mux = xyes)
+
+#
+#
+#
+AC_ARG_ENABLE(mingw,
+ [ --enable-mingw Using mingw compilers, disables ping test build],
+ [ mingw=yes
+ noping=yes
+ ])
+
+if test "x$mingw" = "xyes" ; then
+CFLAGS="$CFLAGS -DLWS_MINGW_SUPPORT"
+fi
+AM_CONDITIONAL(MINGW, test x$mingw = xyes)
+
+#
+#
+#
+AC_ARG_WITH([client-cert-dir],
+[AS_HELP_STRING([--with-client-cert-dir],[directory containing client certs, defaults to /etc/pki/tls/certs/])],
+[clientcertdir=$withval],
+[clientcertdir=/etc/pki/tls/certs/]
+)
+AC_SUBST([clientcertdir])
+
+AC_SUBST([CFLAGS])
+
+
+#
+#
+#
+AC_ARG_ENABLE(noping,
+ [ --enable-noping Do not build ping test app, which has some unixy stuff in sources],
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+ ])
+
+AM_CONDITIONAL(NOPING, test x$noping = xyes)
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+
+
+# Checks for header files.
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+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_TYPE_SIZE_T
+
+# Checks for library functions.
+
+AC_FUNC_MALLOC
+AC_FUNC_REALLOC
+AC_CHECK_FUNCS([bzero memset socket strerror])
+
+AC_CONFIG_FILES([Makefile
+ lib/Makefile
+ test-server/Makefile])
+
+AC_OUTPUT
--- /dev/null
+lib_LTLIBRARIES=libwebsockets.la
+include_HEADERS=libwebsockets.h
+dist_libwebsockets_la_SOURCES=libwebsockets.c \
+ handshake.c \
+ parsers.c \
+ libwebsockets.h \
+ base64-decode.c \
+ client-handshake.c \
+ extension.c \
+ extension-deflate-stream.c \
+ private-libwebsockets.h
+
+if EXT_GOOGLE_MUX
+dist_libwebsockets_la_SOURCES += extension-x-google-mux.c
+endif
+
+if LIBCRYPTO
+else
+dist_libwebsockets_la_SOURCES += md5.c sha-1.c
+endif
+
+libwebsockets_la_CFLAGS:=-Wall -std=gnu99 -pedantic
+libwebsockets_la_LDFLAGS:=
+
+if MINGW
+libwebsockets_la_CFLAGS+= -w -I../win32port/win32helpers -I ../win32port/zlib/
+libwebsockets_la_LDFLAGS+= -lm -luser32 -ladvapi32 -lkernel32 -lgcc
+else
+libwebsockets_la_CFLAGS+= -rdynamic -fPIC -Werror
+libwebsockets_la_LDFLAGS+= -version-info 0:3
+endif
+
+libwebsockets_la_CFLAGS+= -c \
+ -DINSTALL_DATADIR=\"@datadir@\" -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
+libwebsockets_la_LDFLAGS+= -lz
+
+all-local:
+ ../scripts/kernel-doc -html \
+ libwebsockets.c \
+ parsers.c \
+ client-handshake.c \
+ libwebsockets.h \
+ > ../libwebsockets-api-doc.html
+
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+# This Makefile.in is free software; the Free Software Foundation
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+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+/*
+ * This code originally came from here
+ *
+ * http://base64.sourceforge.net/b64.c
+ *
+ * with the following license:
+ *
+ * LICENCE: Copyright (c) 2001 Bob Trower, Trantor Standard Systems Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated
+ * documentation files (the "Software"), to deal in the
+ * Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall
+ * be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+ * KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+ * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
+ * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * VERSION HISTORY:
+ * Bob Trower 08/04/01 -- Create Version 0.00.00B
+ *
+ * I cleaned it up quite a bit to match the (linux kernel) style of the rest
+ * of libwebsockets; this version is under LGPL2 like the rest of libwebsockets
+ * since he explictly allows sublicensing, but I give the URL above so you can
+ * get the original with Bob's super-liberal terms directly if you prefer.
+ */
+
+
+#include <stdio.h>
+#include <string.h>
+
+static const char encode[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+ "abcdefghijklmnopqrstuvwxyz0123456789+/";
+static const char decode[] = "|$$$}rstuvwxyz{$$$$$$$>?@ABCDEFGHIJKLMNOPQRSTUVW"
+ "$$$$$$XYZ[\\]^_`abcdefghijklmnopq";
+
+int
+lws_b64_encode_string(const char *in, int in_len, char *out, int out_size)
+{
+ unsigned char triple[3];
+ int i;
+ int len;
+ int line = 0;
+ int done = 0;
+
+ while (in_len) {
+ len = 0;
+ for (i = 0; i < 3; i++) {
+ if (in_len) {
+ triple[i] = *in++;
+ len++;
+ in_len--;
+ } else
+ triple[i] = 0;
+ }
+ if (!len)
+ continue;
+
+ if (done + 4 >= out_size)
+ return -1;
+
+ *out++ = encode[triple[0] >> 2];
+ *out++ = encode[((triple[0] & 0x03) << 4) |
+ ((triple[1] & 0xf0) >> 4)];
+ *out++ = (len > 1 ? encode[((triple[1] & 0x0f) << 2) |
+ ((triple[2] & 0xc0) >> 6)] : '=');
+ *out++ = (len > 2 ? encode[triple[2] & 0x3f] : '=');
+
+ done += 4;
+ line += 4;
+ }
+
+ if (done + 1 >= out_size)
+ return -1;
+
+ *out++ = '\0';
+
+ return done;
+}
+
+/*
+ * returns length of decoded string in out, or -1 if out was too small
+ * according to out_size
+ */
+
+int
+lws_b64_decode_string(const char *in, char *out, int out_size)
+{
+ int len;
+ int i;
+ int done = 0;
+ unsigned char v;
+ unsigned char quad[4];
+
+ while (*in) {
+
+ len = 0;
+ for (i = 0; i < 4 && *in; i++) {
+
+ v = 0;
+ while (*in && !v) {
+
+ v = *in++;
+ v = (v < 43 || v > 122) ? 0 : decode[v - 43];
+ if (v)
+ v = (v == '$') ? 0 : v - 61;
+ if (*in) {
+ len++;
+ if (v)
+ quad[i] = v - 1;
+ } else
+ quad[i] = 0;
+ }
+ }
+ if (!len)
+ continue;
+
+ if (out_size < (done + len - 1))
+ /* out buffer is too small */
+ return -1;
+
+ if (len >= 2)
+ *out++ = quad[0] << 2 | quad[1] >> 4;
+ if (len >= 3)
+ *out++ = quad[1] << 4 | quad[2] >> 2;
+ if (len >= 4)
+ *out++ = ((quad[2] << 6) & 0xc0) | quad[3];
+
+ done += len - 1;
+ }
+
+ if (done + 1 >= out_size)
+ return -1;
+
+ *out++ = '\0';
+
+ return done;
+}
+
+int
+lws_b64_selftest(void)
+{
+ char buf[64];
+ int n;
+ int test;
+ static const char * const plaintext[] = {
+ "sanity check base 64"
+ };
+ static const char * const coded[] = {
+ "c2FuaXR5IGNoZWNrIGJhc2UgNjQ="
+ };
+
+ for (test = 0; test < sizeof plaintext / sizeof(plaintext[0]); test++) {
+
+ buf[sizeof(buf) - 1] = '\0';
+ n = lws_b64_encode_string(plaintext[test],
+ strlen(plaintext[test]), buf, sizeof buf);
+ if (n != strlen(coded[test]) || strcmp(buf, coded[test])) {
+ fprintf(stderr, "Failed lws_b64 encode selftest "
+ "%d result '%s' %d\n", test, buf, n);
+ return -1;
+ }
+
+ buf[sizeof(buf) - 1] = '\0';
+ n = lws_b64_decode_string(coded[test], buf, sizeof buf);
+ if (n != strlen(plaintext[test]) ||
+ strcmp(buf, plaintext[test])) {
+ fprintf(stderr, "Failed lws_b64 decode selftest "
+ "%d result '%s' %d\n", test, buf, n);
+ return -1;
+ }
+ }
+
+ return 0;
+}
--- /dev/null
+#include "private-libwebsockets.h"
+
+struct libwebsocket *__libwebsocket_client_connect_2(
+ struct libwebsocket_context *context,
+ struct libwebsocket *wsi
+) {
+ struct pollfd pfd;
+ struct timeval tv;
+ struct hostent *server_hostent;
+ struct sockaddr_in server_addr;
+ int n;
+ int plen = 0;
+ char pkt[512];
+ int opt = 1;
+#if defined(__APPLE__)
+ struct protoent *tcp_proto;
+#endif
+
+ debug("__libwebsocket_client_connect_2\n");
+
+ wsi->candidate_children_list = NULL;
+
+ /*
+ * proxy?
+ */
+
+ if (context->http_proxy_port) {
+ plen = sprintf(pkt, "CONNECT %s:%u HTTP/1.0\x0d\x0a"
+ "User-agent: libwebsockets\x0d\x0a"
+/*Proxy-authorization: basic aGVsbG86d29ybGQ= */
+ "\x0d\x0a", wsi->c_address, wsi->c_port);
+
+ /* OK from now on we talk via the proxy */
+
+ free(wsi->c_address);
+ wsi->c_address = strdup(context->http_proxy_address);
+ wsi->c_port = context->http_proxy_port;
+ }
+
+ /*
+ * prepare the actual connection (to the proxy, if any)
+ */
+
+ debug("__libwebsocket_client_connect_2: address %s", wsi->c_address);
+
+ server_hostent = gethostbyname(wsi->c_address);
+ if (server_hostent == NULL) {
+ fprintf(stderr, "Unable to get host name from %s\n",
+ wsi->c_address);
+ goto oom4;
+ }
+
+ wsi->sock = socket(AF_INET, SOCK_STREAM, 0);
+
+ if (wsi->sock < 0) {
+ fprintf(stderr, "Unable to open socket\n");
+ goto oom4;
+ }
+
+ server_addr.sin_family = AF_INET;
+ server_addr.sin_port = htons(wsi->c_port);
+ server_addr.sin_addr = *((struct in_addr *)server_hostent->h_addr);
+ bzero(&server_addr.sin_zero, 8);
+
+ /* Disable Nagle */
+#if !defined(__APPLE__)
+ setsockopt(wsi->sock, SOL_TCP, TCP_NODELAY,
+ (const void *)&opt, sizeof(opt));
+#else
+ tcp_proto = getprotobyname("TCP");
+ setsockopt(wsi->sock, tcp_proto->p_proto, TCP_NODELAY,
+ &opt, sizeof(opt));
+#endif
+
+ /* Set receiving timeout */
+ tv.tv_sec = 0;
+ tv.tv_usec = 100 * 1000;
+ setsockopt(wsi->sock, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv, sizeof tv);
+
+ if (connect(wsi->sock, (struct sockaddr *)&server_addr,
+ sizeof(struct sockaddr)) == -1) {
+ fprintf(stderr, "Connect failed\n");
+#ifdef WIN32
+ closesocket(wsi->sock);
+#else
+ close(wsi->sock);
+#endif
+ goto oom4;
+ }
+
+ debug("connected\n");
+
+ /* into fd -> wsi hashtable */
+
+ insert_wsi(context, wsi);
+
+ /* into internal poll list */
+
+ context->fds[context->fds_count].fd = wsi->sock;
+ context->fds[context->fds_count].revents = 0;
+ context->fds[context->fds_count++].events = POLLIN;
+
+ /* external POLL support via protocol 0 */
+ context->protocols[0].callback(context, wsi,
+ LWS_CALLBACK_ADD_POLL_FD,
+ (void *)(long)wsi->sock, NULL, POLLIN);
+
+ /* we are connected to server, or proxy */
+
+ if (context->http_proxy_port) {
+
+ n = send(wsi->sock, pkt, plen, 0);
+ if (n < 0) {
+#ifdef WIN32
+ closesocket(wsi->sock);
+#else
+ close(wsi->sock);
+#endif
+ fprintf(stderr, "ERROR writing to proxy socket\n");
+ goto bail1;
+ }
+
+ libwebsocket_set_timeout(wsi,
+ PENDING_TIMEOUT_AWAITING_PROXY_RESPONSE, 5);
+
+ wsi->mode = LWS_CONNMODE_WS_CLIENT_WAITING_PROXY_REPLY;
+
+ return wsi;
+ }
+
+ /*
+ * provoke service to issue the handshake directly
+ * we need to do it this way because in the proxy case, this is the
+ * next state and executed only if and when we get a good proxy
+ * response inside the state machine
+ */
+
+ wsi->mode = LWS_CONNMODE_WS_CLIENT_ISSUE_HANDSHAKE;
+ pfd.fd = wsi->sock;
+ pfd.revents = POLLIN;
+ if (libwebsocket_service_fd(context, &pfd) < 0)
+ goto oom4;
+
+ return wsi;
+
+oom4:
+ if (wsi->c_protocol)
+ free(wsi->c_protocol);
+
+ if (wsi->c_origin)
+ free(wsi->c_origin);
+
+ free(wsi->c_host);
+ free(wsi->c_path);
+
+bail1:
+ free(wsi);
+
+ return NULL;
+}
+
+/**
+ * libwebsocket_client_connect() - Connect to another websocket server
+ * @context: Websocket context
+ * @address: Remote server address, eg, "myserver.com"
+ * @port: Port to connect to on the remote server, eg, 80
+ * @ssl_connection: 0 = ws://, 1 = wss:// encrypted, 2 = wss:// allow self
+ * signed certs
+ * @path: Websocket path on server
+ * @host: Hostname on server
+ * @origin: Socket origin name
+ * @protocol: Comma-separated list of protocols being asked for from
+ * the server, or just one. The server will pick the one it
+ * likes best.
+ * @ietf_version_or_minus_one: -1 to ask to connect using the default, latest
+ * protocol supported, or the specific protocol ordinal
+ *
+ * This function creates a connection to a remote server
+ */
+
+struct libwebsocket *
+libwebsocket_client_connect(struct libwebsocket_context *context,
+ const char *address,
+ int port,
+ int ssl_connection,
+ const char *path,
+ const char *host,
+ const char *origin,
+ const char *protocol,
+ int ietf_version_or_minus_one)
+{
+ struct libwebsocket *wsi;
+ int n;
+ int m;
+ struct libwebsocket_extension *ext;
+ int handled;
+#ifndef LWS_OPENSSL_SUPPORT
+ if (ssl_connection) {
+ fprintf(stderr, "libwebsockets not configured for ssl\n");
+ return NULL;
+ }
+#endif
+
+ wsi = malloc(sizeof(struct libwebsocket));
+ if (wsi == NULL)
+ goto bail1;
+
+ memset(wsi, 0, sizeof *wsi);
+
+ /* -1 means just use latest supported */
+
+ if (ietf_version_or_minus_one == -1)
+ ietf_version_or_minus_one = SPEC_LATEST_SUPPORTED;
+
+ wsi->ietf_spec_revision = ietf_version_or_minus_one;
+ wsi->name_buffer_pos = 0;
+ wsi->user_space = NULL;
+ wsi->state = WSI_STATE_CLIENT_UNCONNECTED;
+ wsi->pings_vs_pongs = 0;
+ wsi->protocol = NULL;
+ wsi->pending_timeout = NO_PENDING_TIMEOUT;
+ wsi->count_active_extensions = 0;
+#ifdef LWS_OPENSSL_SUPPORT
+ wsi->use_ssl = ssl_connection;
+#endif
+
+ wsi->c_port = port;
+ wsi->c_address = strdup(address);
+
+ /* copy parameters over so state machine has access */
+
+ wsi->c_path = malloc(strlen(path) + 1);
+ if (wsi->c_path == NULL)
+ goto bail1;
+ strcpy(wsi->c_path, path);
+
+ wsi->c_host = malloc(strlen(host) + 1);
+ if (wsi->c_host == NULL)
+ goto oom1;
+ strcpy(wsi->c_host, host);
+
+ if (origin) {
+ wsi->c_origin = malloc(strlen(origin) + 1);
+ strcpy(wsi->c_origin, origin);
+ if (wsi->c_origin == NULL)
+ goto oom2;
+ } else
+ wsi->c_origin = NULL;
+
+ wsi->c_callback = NULL;
+ if (protocol) {
+ const char *pc;
+ struct libwebsocket_protocols *pp;
+
+ wsi->c_protocol = malloc(strlen(protocol) + 1);
+ if (wsi->c_protocol == NULL)
+ goto oom3;
+
+ strcpy(wsi->c_protocol, protocol);
+
+ pc = protocol;
+ while (*pc && *pc != ',')
+ pc++;
+ n = pc - protocol;
+ pp = context->protocols;
+ while (pp->name && !wsi->c_callback) {
+ if (!strncmp(protocol, pp->name, n))
+ wsi->c_callback = pp->callback;
+ pp++;
+ }
+ } else
+ wsi->c_protocol = NULL;
+
+ if (!wsi->c_callback)
+ wsi->c_callback = context->protocols[0].callback;
+
+ /* set up appropriate masking */
+
+ wsi->xor_mask = xor_no_mask;
+
+ switch (wsi->ietf_spec_revision) {
+ case 0:
+ break;
+ case 4:
+ wsi->xor_mask = xor_mask_04;
+ break;
+ case 5:
+ case 6:
+ case 7:
+ case 8:
+ case 13:
+ wsi->xor_mask = xor_mask_05;
+ break;
+ default:
+ fprintf(stderr,
+ "Client ietf version %d not supported\n",
+ wsi->ietf_spec_revision);
+ goto oom4;
+ }
+
+ /* force no mask if he asks for that though */
+
+ if (context->options & LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK)
+ wsi->xor_mask = xor_no_mask;
+
+ for (n = 0; n < WSI_TOKEN_COUNT; n++) {
+ wsi->utf8_token[n].token = NULL;
+ wsi->utf8_token[n].token_len = 0;
+ }
+
+ /*
+ * Check with each extension if it is able to route and proxy this
+ * connection for us. For example, an extension like x-google-mux
+ * can handle this and then we don't need an actual socket for this
+ * connection.
+ */
+
+ handled = 0;
+ ext = context->extensions;
+ n = 0;
+
+ while (ext && ext->callback && !handled) {
+ m = ext->callback(context, ext, wsi,
+ LWS_EXT_CALLBACK_CAN_PROXY_CLIENT_CONNECTION,
+ (void *)(long)n, (void *)address, port);
+ if (m)
+ handled = 1;
+
+ ext++;
+ n++;
+ }
+
+ if (handled) {
+ debug("libwebsocket_client_connect: ext handling conn\n");
+
+ libwebsocket_set_timeout(wsi,
+ PENDING_TIMEOUT_AWAITING_EXTENSION_CONNECT_RESPONSE, 5);
+
+ wsi->mode = LWS_CONNMODE_WS_CLIENT_WAITING_EXTENSION_CONNECT;
+ return wsi;
+ }
+
+ debug("libwebsocket_client_connect: direct conn\n");
+
+ return __libwebsocket_client_connect_2(context, wsi);
+
+
+oom4:
+ if (wsi->c_protocol)
+ free(wsi->c_protocol);
+
+oom3:
+ if (wsi->c_origin)
+ free(wsi->c_origin);
+
+oom2:
+ free(wsi->c_host);
+
+oom1:
+ free(wsi->c_path);
+
+bail1:
+ free(wsi);
+
+ return NULL;
+}
+
+
+/**
+ * libwebsocket_client_connect_extended() - Connect to another websocket server
+ * @context: Websocket context
+ * @address: Remote server address, eg, "myserver.com"
+ * @port: Port to connect to on the remote server, eg, 80
+ * @ssl_connection: 0 = ws://, 1 = wss:// encrypted, 2 = wss:// allow self
+ * signed certs
+ * @path: Websocket path on server
+ * @host: Hostname on server
+ * @origin: Socket origin name
+ * @protocol: Comma-separated list of protocols being asked for from
+ * the server, or just one. The server will pick the one it
+ * likes best.
+ * @ietf_version_or_minus_one: -1 to ask to connect using the default, latest
+ * protocol supported, or the specific protocol ordinal
+ * @userdata: Pre-allocated user data
+ *
+ * This function creates a connection to a remote server
+ */
+
+struct libwebsocket *
+libwebsocket_client_connect_extended(struct libwebsocket_context *context,
+ const char *address,
+ int port,
+ int ssl_connection,
+ const char *path,
+ const char *host,
+ const char *origin,
+ const char *protocol,
+ int ietf_version_or_minus_one,
+ void *userdata)
+{
+ struct libwebsocket *ws =
+ libwebsocket_client_connect(context, address, port, ssl_connection, path, host, origin, protocol, ietf_version_or_minus_one) ;
+
+ if (ws && !ws->user_space && userdata)
+ ws->user_space = userdata ;
+
+ return ws ;
+ }
--- /dev/null
+#include "private-libwebsockets.h"
+#include "extension-deflate-stream.h"
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+
+#define LWS_ZLIB_WINDOW_BITS 15
+#define LWS_ZLIB_MEMLEVEL 8
+
+int lws_extension_callback_deflate_stream(
+ struct libwebsocket_context *context,
+ struct libwebsocket_extension *ext,
+ struct libwebsocket *wsi,
+ enum libwebsocket_extension_callback_reasons reason,
+ void *user, void *in, size_t len)
+{
+ struct lws_ext_deflate_stream_conn *conn =
+ (struct lws_ext_deflate_stream_conn *)user;
+ int n;
+ struct lws_tokens *eff_buf = (struct lws_tokens *)in;
+
+ switch (reason) {
+
+ /*
+ * for deflate-stream, both client and server sides act the same
+ */
+
+ case LWS_EXT_CALLBACK_CLIENT_CONSTRUCT:
+ case LWS_EXT_CALLBACK_CONSTRUCT:
+ conn->zs_in.zalloc = conn->zs_out.zalloc = Z_NULL;
+ conn->zs_in.zfree = conn->zs_out.zfree = Z_NULL;
+ conn->zs_in.opaque = conn->zs_out.opaque = Z_NULL;
+ n = inflateInit2(&conn->zs_in, -LWS_ZLIB_WINDOW_BITS);
+ if (n != Z_OK) {
+ fprintf(stderr, "deflateInit returned %d\n", n);
+ return 1;
+ }
+ n = deflateInit2(&conn->zs_out,
+ DEFLATE_STREAM_COMPRESSION_LEVEL, Z_DEFLATED,
+ -LWS_ZLIB_WINDOW_BITS, LWS_ZLIB_MEMLEVEL,
+ Z_DEFAULT_STRATEGY);
+ if (n != Z_OK) {
+ fprintf(stderr, "deflateInit returned %d\n", n);
+ return 1;
+ }
+ debug("zlibs constructed\n");
+ break;
+
+ case LWS_EXT_CALLBACK_DESTROY:
+ (void)inflateEnd(&conn->zs_in);
+ (void)deflateEnd(&conn->zs_out);
+ debug("zlibs destructed\n");
+ break;
+
+ case LWS_EXT_CALLBACK_PACKET_RX_PREPARSE:
+
+ /*
+ * inflate the incoming compressed data
+ * Notice, length may be 0 and pointer NULL
+ * in the case we are flushing with nothing new coming in
+ */
+
+ conn->zs_in.next_in = (unsigned char *)eff_buf->token;
+ conn->zs_in.avail_in = eff_buf->token_len;
+
+ conn->zs_in.next_out = conn->buf;
+ conn->zs_in.avail_out = sizeof(conn->buf);
+
+ n = inflate(&conn->zs_in, Z_SYNC_FLUSH);
+ switch (n) {
+ case Z_NEED_DICT:
+ case Z_DATA_ERROR:
+ case Z_MEM_ERROR:
+ /*
+ * screwed.. close the connection... we will get a
+ * destroy callback to take care of closing nicely
+ */
+ fprintf(stderr, "zlib error inflate %d\n", n);
+ return -1;
+ }
+
+ /* rewrite the buffer pointers and length */
+
+ eff_buf->token = (char *)conn->buf;
+ eff_buf->token_len = sizeof(conn->buf) - conn->zs_in.avail_out;
+
+ /*
+ * if we filled the output buffer, signal that we likely have
+ * more and need to be called again
+ */
+
+ if (eff_buf->token_len == sizeof(conn->buf))
+ return 1;
+
+ /* we don't need calling again until new input data comes */
+
+ return 0;
+
+ case LWS_EXT_CALLBACK_FLUSH_PENDING_TX:
+ case LWS_EXT_CALLBACK_PACKET_TX_PRESEND:
+
+ /*
+ * deflate the outgoing compressed data
+ */
+
+ conn->zs_out.next_in = (unsigned char *)eff_buf->token;
+ conn->zs_out.avail_in = eff_buf->token_len;
+
+ conn->zs_out.next_out = conn->buf;
+ conn->zs_out.avail_out = sizeof(conn->buf);
+
+ n = Z_PARTIAL_FLUSH;
+ if (reason == LWS_EXT_CALLBACK_FLUSH_PENDING_TX)
+ n = Z_FULL_FLUSH;
+
+ n = deflate(&conn->zs_out, n);
+ if (n == Z_STREAM_ERROR) {
+ /*
+ * screwed.. close the connection... we will get a
+ * destroy callback to take care of closing nicely
+ */
+ fprintf(stderr, "zlib error deflate\n");
+
+ return -1;
+ }
+
+ /* rewrite the buffer pointers and length */
+
+ eff_buf->token = (char *)conn->buf;
+ eff_buf->token_len = sizeof(conn->buf) - conn->zs_out.avail_out;
+
+ /*
+ * if we filled the output buffer, signal that we likely have
+ * more and need to be called again... even in deflate case
+ * we might sometimes need to spill more than came in
+ */
+
+ if (eff_buf->token_len == sizeof(conn->buf))
+ return 1;
+
+ /* we don't need calling again until new input data comes */
+
+ return 0;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
--- /dev/null
+
+#include <zlib.h>
+
+#define DEFLATE_STREAM_CHUNK 128
+#define DEFLATE_STREAM_COMPRESSION_LEVEL 1
+
+struct lws_ext_deflate_stream_conn {
+ z_stream zs_in;
+ z_stream zs_out;
+ unsigned char buf[2000];
+};
+
+extern int lws_extension_callback_deflate_stream(
+ struct libwebsocket_context *context,
+ struct libwebsocket_extension *ext,
+ struct libwebsocket *wsi,
+ enum libwebsocket_extension_callback_reasons reason,
+ void *user, void *in, size_t len);
--- /dev/null
+#include "private-libwebsockets.h"
+#include "extension-x-google-mux.h"
+
+#define MUX_REAL_CHILD_INDEX_OFFSET 2
+
+static int ongoing_subchannel;
+static struct libwebsocket * tag_with_parent = NULL;
+static int client_handshake_generation_is_for_mux_child;
+
+static int lws_addheader_mux_opcode(unsigned char *pb, int len)
+{
+ unsigned char *start = pb;
+
+ *pb++ = LWS_WS_OPCODE_07__NOSPEC__MUX | 0x80;
+ if (len < 126)
+ *pb++ = len;
+ else {
+ if (len > 65535) {
+ *pb++ = 127;
+ *pb++ = 0;
+ *pb++ = 0;
+ *pb++ = 0;
+ *pb++ = 0;
+ *pb++ = (len ) >> 24;
+ *pb++ = (len) >> 16;
+ *pb++ = (len) >> 8;
+ *pb++ = (len) >> 0;
+ } else {
+ *pb++ = 126;
+ *pb++ = (len) >> 8;
+ *pb++ = (len) >> 0;
+ }
+ }
+
+ return pb - start;
+}
+
+static int
+lws_mux_subcommand_header(int cmd, int channel, unsigned char *pb, int len)
+{
+ unsigned char *start = pb;
+
+ if (channel == 0) {
+ muxdebug("lws_mux_subcommand_header: given ch 0\n");
+ *((int *)0) = 0;
+ }
+
+ if (channel < 31)
+ *pb++ = (channel << 3) | cmd;
+ else {
+ *pb++ = (31 << 3) | cmd;
+ *pb++ = channel >> 8;
+ *pb++ = channel;
+ }
+
+ if (len <= 253)
+ *pb++ = len;
+ else {
+ if (len <= 65535) {
+ *pb++ = 254;
+ *pb++ = len >> 8;
+ *pb++ = len;
+ } else {
+ *pb++ = 255;
+ *pb++ = len >> 24;
+ *pb++ = len >> 16;
+ *pb++ = len >> 8;
+ *pb++ = len;
+ }
+ }
+
+ return pb - start;
+}
+
+static int lws_ext_x_google_mux__send_addchannel(
+ struct libwebsocket_context *context,
+ struct libwebsocket *wsi,
+ struct lws_ext_x_google_mux_conn *parent_conn,
+ struct libwebsocket *wsi_child,
+ int channel,
+ const char *url
+) {
+
+ unsigned char send_buf[LWS_SEND_BUFFER_PRE_PADDING + 2048 +
+ LWS_SEND_BUFFER_POST_PADDING];
+ unsigned char *pb = &send_buf[LWS_SEND_BUFFER_PRE_PADDING];
+ char *p;
+ char delta_headers[1536];
+ int delta_headers_len;
+ int subcommand_length;
+ int n;
+
+ if (channel == 0) {
+ muxdebug("lws_ext_x_google_mux__send_addchannel: given ch 0\n");
+ *((int *)0) = 0;
+ }
+
+ wsi_child->ietf_spec_revision = wsi->ietf_spec_revision;
+
+ client_handshake_generation_is_for_mux_child = 1;
+ p = libwebsockets_generate_client_handshake(context, wsi_child,
+ delta_headers);
+ client_handshake_generation_is_for_mux_child = 0;
+ delta_headers_len = p - delta_headers;
+
+ subcommand_length = lws_mux_subcommand_header(
+ LWS_EXT_XGM_OPC__ADDCHANNEL, channel, pb, delta_headers_len);
+
+ pb += lws_addheader_mux_opcode(pb, subcommand_length + delta_headers_len);
+ pb += lws_mux_subcommand_header(LWS_EXT_XGM_OPC__ADDCHANNEL, channel,
+ pb, delta_headers_len);
+
+// n = sprintf((char *)pb, "%s\x0d\x0a", url);
+// pb += n;
+
+ if (delta_headers_len)
+ memcpy(pb, delta_headers, delta_headers_len);
+
+ pb += delta_headers_len;
+
+ muxdebug("add channel sends %ld\n",
+ pb - &send_buf[LWS_SEND_BUFFER_PRE_PADDING]);
+
+ parent_conn->defeat_mux_opcode_wrapping = 1;
+
+ /* send the request to the server */
+
+ n = lws_issue_raw_ext_access(wsi, &send_buf[LWS_SEND_BUFFER_PRE_PADDING],
+ pb - &send_buf[LWS_SEND_BUFFER_PRE_PADDING]);
+
+ parent_conn->defeat_mux_opcode_wrapping = 0;
+
+ return n;
+}
+
+/**
+ * lws_extension_x_google_mux_parser(): Parse mux buffer headers coming in
+ * from a muxed connection into subchannel
+ * specific actions
+ * @wsi: muxed websocket instance
+ * @conn: x-google-mux private data bound to that @wsi
+ * @c: next character in muxed stream
+ */
+
+static int
+lws_extension_x_google_mux_parser(struct libwebsocket_context *context,
+ struct libwebsocket *wsi,
+ struct libwebsocket_extension *this_ext,
+ struct lws_ext_x_google_mux_conn *conn, unsigned char c)
+{
+ struct libwebsocket *wsi_child = NULL;
+ struct libwebsocket_extension *ext;
+ struct lws_ext_x_google_mux_conn *child_conn = NULL;
+ int n;
+ void *v;
+
+// fprintf(stderr, "XRX: %02X %d %d\n", c, conn->state, conn->length);
+
+ /*
+ * [ <Channel ID b12.. b8> <Mux Opcode b2..b0> ]
+ * [ <Channel ID b7.. b0> ]
+ */
+
+ switch (conn->state) {
+
+ case LWS_EXT_XGM_STATE__MUX_BLOCK_1:
+// fprintf(stderr, "LWS_EXT_XGM_STATE__MUX_BLOCK_1: opc=%d channel=%d\n", c & 7, c >> 3);
+ conn->block_subopcode = c & 7;
+ conn->block_subchannel = (c >> 3) & 0x1f;
+ conn->ignore_cmd = 0;
+
+ if (conn->block_subchannel != 31)
+ goto interpret;
+ else
+ conn->state = LWS_EXT_XGM_STATE__MUX_BLOCK_2;
+ break;
+
+ case LWS_EXT_XGM_STATE__MUX_BLOCK_2:
+ conn->block_subchannel = c << 8;
+ conn->state = LWS_EXT_XGM_STATE__MUX_BLOCK_3;
+ break;
+
+ case LWS_EXT_XGM_STATE__MUX_BLOCK_3:
+ conn->block_subchannel |= c;
+
+interpret:
+// fprintf(stderr, "LWS_EXT_XGM_STATE__MUX_BLOCK_3: subchannel=%d\n", conn->block_subchannel);
+ ongoing_subchannel = conn->block_subchannel;
+
+ /*
+ * convert the subchannel index to a child wsi
+ */
+
+ /* act on the muxing opcode */
+
+ switch (conn->block_subopcode) {
+ case LWS_EXT_XGM_OPC__DATA:
+ conn->state = LWS_EXT_XGM_STATE__DATA;
+ break;
+ case LWS_EXT_XGM_OPC__ADDCHANNEL:
+ conn->state = LWS_EXT_XGM_STATE__ADDCHANNEL_LEN;
+ switch (wsi->mode) {
+
+ /* client: parse accepted headers returned by server */
+
+ case LWS_CONNMODE_WS_CLIENT_WAITING_PROXY_REPLY:
+ case LWS_CONNMODE_WS_CLIENT_ISSUE_HANDSHAKE:
+ case LWS_CONNMODE_WS_CLIENT_WAITING_SERVER_REPLY:
+ case LWS_CONNMODE_WS_CLIENT:
+ wsi_child = conn->wsi_children[conn->block_subchannel - MUX_REAL_CHILD_INDEX_OFFSET];
+ wsi_child->state = WSI_STATE_HTTP_HEADERS;
+ wsi_child->parser_state = WSI_TOKEN_NAME_PART;
+ break;
+ default:
+ wsi_child = libwebsocket_create_new_server_wsi(context);
+ conn->wsi_children[conn->block_subchannel - MUX_REAL_CHILD_INDEX_OFFSET] = wsi_child;
+ wsi_child->state = WSI_STATE_HTTP_HEADERS;
+ wsi_child->parser_state = WSI_TOKEN_NAME_PART;
+ wsi_child->extension_handles = wsi;
+ muxdebug("MUX LWS_EXT_XGM_OPC__ADDCHANNEL... "
+ "created child subchannel %d\n", conn->block_subchannel);
+ break;
+ }
+ break;
+ case LWS_EXT_XGM_OPC__DROPCHANNEL:
+ conn->state = LWS_EXT_XGM_STATE__MUX_BLOCK_1;
+ break;
+ case LWS_EXT_XGM_OPC__FLOWCONTROL:
+ conn->state = LWS_EXT_XGM_STATE__FLOWCONTROL_1;
+ break;
+ default:
+ fprintf(stderr, "xgm: unknown subopcode\n");
+ return -1;
+ }
+ break;
+
+ case LWS_EXT_XGM_STATE__ADDCHANNEL_LEN:
+ switch (c) {
+ case 254:
+ conn->state = LWS_EXT_XGM_STATE__ADDCHANNEL_LEN16_1;
+ break;
+ case 255:
+ conn->state = LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_1;
+ break;
+ default:
+ conn->length = c;
+ conn->state = LWS_EXT_XGM_STATE__ADDCHANNEL_HEADERS;
+ break;
+ }
+ break;
+
+ case LWS_EXT_XGM_STATE__ADDCHANNEL_LEN16_1:
+ conn->length = c << 8;
+ conn->state = LWS_EXT_XGM_STATE__ADDCHANNEL_LEN16_2;
+ break;
+
+ case LWS_EXT_XGM_STATE__ADDCHANNEL_LEN16_2:
+ conn->length |= c;
+ conn->state = LWS_EXT_XGM_STATE__ADDCHANNEL_HEADERS;
+ muxdebug("conn->length in mux block is %d\n", conn->length);
+ break;
+
+ case LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_1:
+ conn->length = c << 24;
+ conn->state = LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_2;
+ break;
+
+ case LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_2:
+ conn->length |= c << 16;
+ conn->state = LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_3;
+ break;
+
+ case LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_3:
+ conn->length |= c << 8;
+ conn->state = LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_4;
+ break;
+
+ case LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_4:
+ conn->length |= c;
+ conn->state = LWS_EXT_XGM_STATE__ADDCHANNEL_HEADERS;
+ break;
+
+ case LWS_EXT_XGM_STATE__ADDCHANNEL_HEADERS:
+
+ if (conn->block_subchannel == 0 || conn->block_subchannel >=
+ (sizeof(conn->wsi_children) /
+ sizeof(conn->wsi_children[0]))) {
+ fprintf(stderr, "Illegal subchannel %d in "
+ "LWS_EXT_XGM_STATE__ADDCHANNEL_HEADERS, ignoring",
+ conn->block_subchannel);
+ conn->ignore_cmd = 1;
+ }
+
+ if (conn->block_subchannel == 1 && !conn->original_ch1_closed) {
+ fprintf(stderr, "illegal request to add ch1 when it's still live, ignoring\n");
+ conn->ignore_cmd = 1;
+ }
+
+ if (conn->ignore_cmd) {
+ if (--conn->length)
+ return 0;
+ conn->state = LWS_EXT_XGM_STATE__MUX_BLOCK_1;
+ return 0;
+ }
+
+ switch (wsi->mode) {
+
+ /* client: parse accepted headers returned by server */
+
+ case LWS_CONNMODE_WS_CLIENT_WAITING_PROXY_REPLY:
+ case LWS_CONNMODE_WS_CLIENT_ISSUE_HANDSHAKE:
+ case LWS_CONNMODE_WS_CLIENT_WAITING_SERVER_REPLY:
+ case LWS_CONNMODE_WS_CLIENT_WAITING_EXTENSION_CONNECT:
+ case LWS_CONNMODE_WS_CLIENT:
+
+ muxdebug("Client LWS_EXT_XGM_STATE__ADDCHANNEL_HEADERS in %c\n", c);
+ if (conn->block_subchannel == 1) {
+ muxdebug("adding ch1\n");
+ wsi_child = wsi;
+ child_conn = conn;
+ } else
+ wsi_child = conn->wsi_children[
+ conn->block_subchannel -
+ MUX_REAL_CHILD_INDEX_OFFSET];
+
+ libwebsocket_parse(wsi_child, c);
+
+ if (--conn->length)
+ return 0;
+
+ /* it's here we create the actual ext conn via callback */
+ tag_with_parent = wsi;
+ lws_client_interpret_server_handshake(context, wsi_child);
+ tag_with_parent = NULL;
+
+ //if (wsi->parser_state != WSI_PARSING_COMPLETE)
+// break;
+
+ /* client: we received all server's ADD ack */
+
+ if (conn->block_subchannel != 1) {
+ child_conn = lws_get_extension_user_matching_ext(
+ wsi_child, this_ext);
+ muxdebug("Received server's ADD Channel ACK for "
+ "subchannel %d child_conn=%p!\n",
+ conn->block_subchannel, (void *)child_conn);
+
+ wsi_child->xor_mask = xor_no_mask;
+ wsi_child->ietf_spec_revision = wsi->ietf_spec_revision;
+
+ wsi_child->mode = LWS_CONNMODE_WS_CLIENT;
+ wsi_child->state = WSI_STATE_ESTABLISHED;
+ child_conn->state = LWS_EXT_XGM_STATE__MUX_BLOCK_1;
+ }
+
+ conn->state = LWS_EXT_XGM_STATE__MUX_BLOCK_1;
+ child_conn->subchannel = conn->block_subchannel;
+
+ /* allocate the per-connection user memory (if any) */
+
+ if (wsi_child->protocol->per_session_data_size) {
+ wsi_child->user_space = malloc(
+ wsi_child->protocol->per_session_data_size);
+ if (wsi_child->user_space == NULL) {
+ fprintf(stderr, "Out of memory for "
+ "conn user space\n");
+ goto bail2;
+ }
+ } else
+ wsi_child->user_space = NULL;
+
+ /* clear his proxy connection timeout */
+
+ libwebsocket_set_timeout(wsi, NO_PENDING_TIMEOUT, 0);
+
+ /* mark him as being alive */
+
+ wsi_child->state = WSI_STATE_ESTABLISHED;
+ wsi_child->mode = LWS_CONNMODE_WS_CLIENT;
+
+ if (wsi_child->protocol)
+ muxdebug("mux handshake OK for protocol %s\n",
+ wsi_child->protocol->name);
+ else
+ muxdebug("mux child handshake ends up with no protocol!\n");
+
+ /*
+ * inform all extensions, not just active ones since they
+ * already know
+ */
+
+ ext = context->extensions;
+
+ while (ext && ext->callback) {
+ v = NULL;
+ for (n = 0; n < wsi_child->count_active_extensions; n++)
+ if (wsi_child->active_extensions[n] == ext) {
+ v = wsi_child->active_extensions_user[n];
+ }
+
+ ext->callback(context, ext, wsi_child,
+ LWS_EXT_CALLBACK_ANY_WSI_ESTABLISHED, v, NULL, 0);
+ ext++;
+ }
+
+ /* call him back to inform him he is up */
+
+ wsi->protocol->callback(context, wsi_child,
+ LWS_CALLBACK_CLIENT_ESTABLISHED,
+ wsi_child->user_space,
+ NULL, 0);
+
+ return 0;
+
+bail2:
+ exit(1);
+
+ /* server: parse proposed changed headers from client */
+
+ default:
+ break;
+ }
+
+ /*
+ * SERVER
+ */
+
+ wsi_child = conn->wsi_children[conn->block_subchannel - MUX_REAL_CHILD_INDEX_OFFSET];
+
+ muxdebug("Server LWS_EXT_XGM_STATE__ADDCHANNEL_HEADERS in %d\n", conn->length);
+
+ libwebsocket_read(context, wsi_child, &c, 1);
+
+ if (--conn->length > 0)
+ break;
+
+ muxdebug("Server LWS_EXT_XGM_STATE__ADDCHANNEL_HEADERS done\n");
+
+ /*
+ * server: header diffs are all seen, we must process
+ * the add action
+ */
+
+ /* reply with ADDCHANNEL to ack it */
+
+ wsi->xor_mask = xor_no_mask;
+ child_conn = lws_get_extension_user_matching_ext(wsi_child,
+ this_ext);
+ if (!child_conn) {
+ fprintf(stderr, "wsi_child %p has no child conn!", (void *)wsi_child);
+ break;
+ }
+ child_conn->wsi_parent = wsi;
+ conn->sticky_mux_used = 1;
+ child_conn->subchannel = conn->block_subchannel;
+
+
+ muxdebug("Setting child conn parent to %p\n", (void *)wsi);
+
+ wsi_child->mode = LWS_CONNMODE_WS_SERVING;
+ wsi_child->state = WSI_STATE_ESTABLISHED;
+ wsi_child->lws_rx_parse_state = LWS_RXPS_NEW;
+ wsi_child->rx_packet_length = 0;
+
+ /* allocate the per-connection user memory (if any) */
+
+ if (wsi_child->protocol->per_session_data_size) {
+ wsi_child->user_space = malloc(
+ wsi_child->protocol->per_session_data_size);
+ if (wsi_child->user_space == NULL) {
+ fprintf(stderr, "Out of memory for "
+ "conn user space\n");
+ break;
+ }
+ } else
+ wsi_child->user_space = NULL;
+
+
+ conn->wsi_children[conn->block_subchannel -
+ MUX_REAL_CHILD_INDEX_OFFSET] = wsi_child;
+ if (conn->highest_child_subchannel <=
+ conn->block_subchannel - MUX_REAL_CHILD_INDEX_OFFSET)
+ conn->highest_child_subchannel =
+ conn->block_subchannel -
+ MUX_REAL_CHILD_INDEX_OFFSET + 1;
+
+
+ /* notify user code that we're ready to roll */
+
+ if (wsi_child->protocol->callback)
+ wsi_child->protocol->callback(
+ wsi_child->protocol->owning_server,
+ wsi_child, LWS_CALLBACK_ESTABLISHED,
+ wsi_child->user_space, NULL, 0);
+
+ muxdebug("setting conn state LWS_EXT_XGM_STATE__MUX_BLOCK_1\n");
+ conn->state = LWS_EXT_XGM_STATE__MUX_BLOCK_1;
+ break;
+
+ case LWS_EXT_XGM_STATE__FLOWCONTROL_1:
+ conn->length = c << 24;
+ conn->state = LWS_EXT_XGM_STATE__FLOWCONTROL_2;
+ break;
+
+ case LWS_EXT_XGM_STATE__FLOWCONTROL_2:
+ conn->length |= c << 16;
+ conn->state = LWS_EXT_XGM_STATE__FLOWCONTROL_3;
+ break;
+
+ case LWS_EXT_XGM_STATE__FLOWCONTROL_3:
+ conn->length |= c << 8;
+ conn->state = LWS_EXT_XGM_STATE__FLOWCONTROL_4;
+ break;
+
+ case LWS_EXT_XGM_STATE__FLOWCONTROL_4:
+ conn->length |= c;
+ conn->state = LWS_EXT_XGM_STATE__MUX_BLOCK_1;
+ break;
+
+ case LWS_EXT_XGM_STATE__DATA:
+
+// fprintf(stderr, "LWS_EXT_XGM_STATE__DATA in\n");
+
+ /*
+ * we have cooked websocket frame content following just like
+ * it went on the wire without mux, including masking and any
+ * other extensions (including this guy can himself be another
+ * level of channel mux, there's no restriction).
+ *
+ * We deal with it by just feeding it to the child wsi's rx
+ * state machine. The only issue is, we need that state machine
+ * to tell us when it ate a full frame, so we watch its state
+ * afterwards
+ */
+ if (conn->block_subchannel - MUX_REAL_CHILD_INDEX_OFFSET >= conn->highest_child_subchannel) {
+ fprintf(stderr, "Illegal subchannel %d\n", conn->block_subchannel);
+ return -1;
+ }
+
+ // fprintf(stderr, "LWS_EXT_XGM_STATE__DATA: ch %d\n", conn->block_subchannel);
+
+ if (conn->block_subchannel == 1) {
+ if (conn->original_ch1_closed) {
+ fprintf(stderr, "data sent to closed ch1\n");
+ return -1;
+ }
+ wsi_child = wsi;
+ } else
+ wsi_child = conn->wsi_children[conn->block_subchannel - MUX_REAL_CHILD_INDEX_OFFSET];
+
+ if (!wsi_child) {
+ fprintf(stderr, "Bad subchannel %d\n", conn->block_subchannel);
+ return -1;
+ }
+
+ switch (wsi_child->mode) {
+
+ /* client receives something */
+
+ case LWS_CONNMODE_WS_CLIENT_WAITING_PROXY_REPLY:
+ case LWS_CONNMODE_WS_CLIENT_ISSUE_HANDSHAKE:
+ case LWS_CONNMODE_WS_CLIENT_WAITING_SERVER_REPLY:
+ case LWS_CONNMODE_WS_CLIENT:
+// fprintf(stderr, " client\n");
+ if (libwebsocket_client_rx_sm(wsi_child, c) < 0) {
+ libwebsocket_close_and_free_session(
+ context,
+ wsi_child,
+ LWS_CLOSE_STATUS_GOINGAWAY);
+ }
+
+ return 0;
+
+ /* server is receiving from client */
+
+ default:
+// fprintf(stderr, " server\n");
+ if (libwebsocket_rx_sm(wsi_child, c) < 0) {
+ muxdebug("probs\n");
+ libwebsocket_close_and_free_session(
+ context,
+ wsi_child,
+ LWS_CLOSE_STATUS_GOINGAWAY);
+ }
+ break;
+ }
+ break;
+ }
+
+ return 0;
+}
+
+
+
+int lws_extension_callback_x_google_mux(
+ struct libwebsocket_context *context,
+ struct libwebsocket_extension *ext,
+ struct libwebsocket *wsi,
+ enum libwebsocket_extension_callback_reasons reason,
+ void *user, void *in, size_t len)
+{
+ unsigned char send_buf[LWS_SEND_BUFFER_PRE_PADDING + 4096 +
+ LWS_SEND_BUFFER_POST_PADDING];
+ struct lws_ext_x_google_mux_conn *conn =
+ (struct lws_ext_x_google_mux_conn *)user;
+ struct lws_ext_x_google_mux_conn *parent_conn;
+ struct lws_ext_x_google_mux_conn *child_conn;
+ int n;
+ struct lws_tokens *eff_buf = (struct lws_tokens *)in;
+ unsigned char *p = NULL;
+ struct lws_ext_x_google_mux_context *mux_ctx =
+ ext->per_context_private_data;
+ struct libwebsocket *wsi_parent;
+ struct libwebsocket *wsi_child;
+ struct libwebsocket *wsi_temp;
+ unsigned char *pin = (unsigned char *)in;
+ unsigned char *basepin;
+ int m;
+ int done = 0;
+ unsigned char *pb = &send_buf[LWS_SEND_BUFFER_PRE_PADDING];
+ int subcommand_length;
+
+ if (eff_buf)
+ p = (unsigned char *)eff_buf->token;
+
+ switch (reason) {
+
+ /* these guys are once per context */
+
+ case LWS_EXT_CALLBACK_SERVER_CONTEXT_CONSTRUCT:
+ case LWS_EXT_CALLBACK_CLIENT_CONTEXT_CONSTRUCT:
+
+ ext->per_context_private_data = malloc(
+ sizeof (struct lws_ext_x_google_mux_context));
+ mux_ctx = (struct lws_ext_x_google_mux_context *)
+ ext->per_context_private_data;
+ mux_ctx->active_conns = 0;
+ break;
+
+ case LWS_EXT_CALLBACK_SERVER_CONTEXT_DESTRUCT:
+ case LWS_EXT_CALLBACK_CLIENT_CONTEXT_DESTRUCT:
+
+ if (!mux_ctx)
+ break;
+ for (n = 0; n < mux_ctx->active_conns; n++)
+ if (mux_ctx->wsi_muxconns[n]) {
+ libwebsocket_close_and_free_session(
+ context, mux_ctx->wsi_muxconns[n],
+ LWS_CLOSE_STATUS_GOINGAWAY);
+ mux_ctx->wsi_muxconns[n] = NULL;
+ }
+
+ free(mux_ctx);
+ break;
+
+ /*
+ * channel management
+ */
+
+ case LWS_EXT_CALLBACK_CAN_PROXY_CLIENT_CONNECTION:
+
+ muxdebug("LWS_EXT_CALLBACK_CAN_PROXY_CLIENT_CONNECTION %s:%u\n",
+ (char *)in, (unsigned int)len);
+
+ /*
+ * Does a physcial connection to the same server:port already
+ * exist so we can piggyback on it?
+ */
+
+ for (n = 0; n < mux_ctx->active_conns && !done; n++) {
+
+ wsi_parent = mux_ctx->wsi_muxconns[n];
+ if (!wsi_parent)
+ continue;
+
+ muxdebug(" %s / %s\n", wsi_parent->c_address, (char *)in);
+ if (strcmp(wsi_parent->c_address, in))
+ continue;
+ muxdebug(" %u / %u\n", wsi_parent->c_port, (unsigned int)len);
+
+ if (wsi_parent->c_port != (unsigned int)len)
+ continue;
+
+ /*
+ * does this potential parent already have an
+ * x-google-mux conn associated with him?
+ */
+
+ parent_conn = NULL;
+ for (m = 0; m < wsi_parent->count_active_extensions; m++)
+ if (ext == wsi_parent->active_extensions[m])
+ parent_conn = (struct lws_ext_x_google_mux_conn *)
+ wsi_parent->active_extensions_user[m];
+
+ if (parent_conn == NULL) {
+
+ /*
+ * he doesn't -- see if that's just because it
+ * is early in his connection sequence or if we
+ * should give up on him
+ */
+
+ switch (wsi_parent->mode) {
+ case LWS_CONNMODE_WS_SERVING:
+ case LWS_CONNMODE_WS_CLIENT:
+ continue;
+ default:
+ break;
+ }
+
+ /*
+ * our putative parent is still connecting
+ * himself, we have to become a candidate child
+ * and find out our final fate when the parent
+ * completes connection
+ */
+
+ wsi->candidate_children_list = wsi_parent->candidate_children_list;
+ wsi_parent->candidate_children_list = wsi;
+ wsi->mode = LWS_CONNMODE_WS_CLIENT_PENDING_CANDIDATE_CHILD;
+
+ done = 1;
+ continue;
+ }
+
+ if (parent_conn->highest_child_subchannel >=
+ (sizeof(parent_conn->wsi_children) /
+ sizeof(parent_conn->wsi_children[0]))) {
+ fprintf(stderr, "Can't add any more children\n");
+ continue;
+ }
+ /*
+ * this established connection will do, bind them
+ * from now on child will only operate through parent
+ * connection
+ */
+
+ wsi->candidate_children_list = wsi_parent->candidate_children_list;
+ wsi_parent->candidate_children_list = wsi;
+ wsi->mode = LWS_CONNMODE_WS_CLIENT_PENDING_CANDIDATE_CHILD;
+
+ muxdebug("attaching to existing mux\n");
+
+ conn = parent_conn;
+ wsi = wsi_parent;
+
+ goto handle_additions;
+
+ }
+
+ /*
+ * either way, note the existence of this connection in case
+ * he will become a possible mux parent later
+ */
+
+ mux_ctx->wsi_muxconns[mux_ctx->active_conns++] = wsi;
+ if (done)
+ return 1;
+
+ muxdebug("x-google-mux: unable to mux connection\n");
+
+ break;
+
+ /* these guys are once per connection */
+
+ case LWS_EXT_CALLBACK_CLIENT_CONSTRUCT:
+ muxdebug("LWS_EXT_CALLBACK_CLIENT_CONSTRUCT: setting parent = %p\n", (void *)tag_with_parent);
+ conn->state = LWS_EXT_XGM_STATE__MUX_BLOCK_1;
+ if (conn->block_subchannel != 1)
+ conn->wsi_parent = tag_with_parent;
+ break;
+
+ case LWS_EXT_CALLBACK_CONSTRUCT:
+ muxdebug("LWS_EXT_CALLBACK_CONSTRUCT\n");
+ conn->state = LWS_EXT_XGM_STATE__MUX_BLOCK_1;
+ break;
+
+ case LWS_EXT_CALLBACK_CHECK_OK_TO_REALLY_CLOSE:
+ muxdebug("LWS_EXT_CALLBACK_CHECK_OK_TO_REALLY_CLOSE\n");
+
+ if (conn->subchannel == 1) {
+
+ /*
+ * special case of original mux parent channel closing
+ */
+
+ conn->original_ch1_closed = 1;
+
+ fprintf(stderr, "original mux parent channel closing\n");
+
+ parent_conn = conn;
+ } else {
+
+ parent_conn = lws_get_extension_user_matching_ext(conn->wsi_parent, ext);
+ if (parent_conn == 0) {
+ muxdebug("failed to get parent conn\n");
+ break;
+ }
+ }
+
+ /* see if that was the end of the mux entirely */
+
+ if (!parent_conn->original_ch1_closed)
+ break;
+
+ done = 0;
+ for (n = 0; n < !done && parent_conn->highest_child_subchannel; n++)
+ if (parent_conn->wsi_children[n])
+ done = 1;
+
+ /* if he has children, don't let him close for real! */
+
+ if (done) {
+ fprintf(stderr, "VETO closure\n");
+ return 1;
+ }
+
+ /* no children, ch1 is closed, let him destroy himself */
+
+ if (conn->subchannel == 1)
+ fprintf(stderr, "ALLOW closure of mux parent\n");
+
+ break;
+
+ case LWS_EXT_CALLBACK_DESTROY:
+ muxdebug("LWS_EXT_CALLBACK_DESTROY\n");
+
+ /*
+ * remove us from parent if noted in parent
+ */
+
+ if (conn->subchannel == 1) {
+
+ /*
+ * special case of original mux parent channel closing
+ */
+
+ conn->original_ch1_closed = 1;
+
+ fprintf(stderr, "original mux parent channel closing\n");
+
+ parent_conn = conn;
+ wsi_parent = wsi;
+ } else {
+
+ wsi_parent = conn->wsi_parent;
+ parent_conn = lws_get_extension_user_matching_ext(conn->wsi_parent, ext);
+ if (parent_conn == 0) {
+ muxdebug("failed to get parent conn\n");
+ break;
+ }
+ for (n = 0; n < parent_conn->highest_child_subchannel; n++)
+ if (parent_conn->wsi_children[n] == wsi)
+ parent_conn->wsi_children[n] = NULL;
+ }
+
+ /* see if that was the end of the mux entirely */
+
+ if (!parent_conn->original_ch1_closed)
+ break;
+
+ done = 0;
+ for (n = 0; n < !done && parent_conn->highest_child_subchannel; n++)
+ if (parent_conn->wsi_children[n])
+ done = 1;
+
+ if (done == 0)
+ if (parent_conn != conn)
+
+ /*
+ * parent closed last and no children left
+ * ... and we are not parent already ourselves
+ */
+
+ libwebsocket_close_and_free_session(context, wsi_parent, LWS_CLOSE_STATUS_NORMAL);
+
+ break;
+
+ case LWS_EXT_CALLBACK_DESTROY_ANY_WSI_CLOSING:
+ muxdebug("LWS_EXT_CALLBACK_DESTROY_ANY_WSI_CLOSING\n");
+
+ for (n = 0; n < mux_ctx->active_conns; n++)
+ if (mux_ctx->wsi_muxconns[n] == wsi) {
+ while (n++ < mux_ctx->active_conns)
+ mux_ctx->wsi_muxconns[n - 1] =
+ mux_ctx->wsi_muxconns[n];
+ mux_ctx->active_conns--;
+ return 0;
+ }
+
+ /*
+ * liberate any candidate children otherwise imprisoned
+ */
+
+ wsi_parent = wsi->candidate_children_list;
+ while (wsi_parent) {
+ wsi_temp = wsi_parent->candidate_children_list;
+ /* let them each connect privately then */
+ __libwebsocket_client_connect_2(context, wsi_parent);
+ wsi_parent = wsi_temp;
+ }
+
+ break;
+
+ case LWS_EXT_CALLBACK_ANY_WSI_ESTABLISHED:
+ muxdebug("LWS_EXT_CALLBACK_ANY_WSI_ESTABLISHED\n");
+
+handle_additions:
+ /*
+ * did this putative parent get x-google-mux authorized in the
+ * end?
+ */
+
+ if (!conn) {
+
+ muxdebug(" Putative parent didn't get mux extension, let them go it alone\n");
+
+ /*
+ * no, we can't be a parent for mux children. Let
+ * them all go it alone
+ */
+
+ wsi_child = wsi->candidate_children_list;
+ while (wsi_child) {
+ wsi_temp = wsi_child->candidate_children_list;
+ /* let them each connect privately then */
+ __libwebsocket_client_connect_2(context, wsi_child);
+ wsi_child = wsi_temp;
+ }
+
+ return 1;
+ }
+
+ /*
+ * we did get mux extension authorized by server, in that case
+ * if we have any candidate children let's try to attach them
+ * as mux subchannel real children
+ */
+
+ wsi_child = wsi->candidate_children_list;
+ n = 0;
+ while (wsi_child) {
+
+ wsi_temp = wsi_child->candidate_children_list;
+
+ /* find an empty subchannel */
+
+ while ((n < (sizeof(conn->wsi_children) / sizeof(conn->wsi_children[0]))) &&
+ conn->wsi_children[n] != NULL)
+ n++;
+
+ if (n >= (sizeof(conn->wsi_children) / sizeof(conn->wsi_children[0]))) {
+ /* no room at the inn */
+
+ /* let them each connect privately then */
+ __libwebsocket_client_connect_2(context, wsi_child);
+ wsi_child = wsi_temp;
+ continue;
+ }
+
+ muxdebug(" using mux addchannel action for candidate child\n");
+
+ /* pile the children on the parent */
+ lws_ext_x_google_mux__send_addchannel(context, wsi,
+ conn, wsi_child,
+ n + MUX_REAL_CHILD_INDEX_OFFSET, wsi->c_path);
+
+ conn->sticky_mux_used = 1;
+
+ conn->wsi_children[n] = wsi_child;
+ if ((n + 1) > conn->highest_child_subchannel)
+ conn->highest_child_subchannel = n + 1;
+
+ muxdebug("Setting CHILD LIST entry %d to %p\n",
+ n + MUX_REAL_CHILD_INDEX_OFFSET, (void *)wsi_parent);
+ wsi_child = wsi_temp;
+ }
+ wsi->candidate_children_list = NULL;
+ return 1;
+
+ /*
+ * whenever we receive something on a muxed link
+ */
+
+ case LWS_EXT_CALLBACK_EXTENDED_PAYLOAD_RX:
+
+ muxdebug("LWS_EXT_CALLBACK_EXTENDED_PAYLOAD_RX\n");
+
+ if (wsi->opcode != LWS_WS_OPCODE_07__NOSPEC__MUX)
+ return 0; /* unhandled */
+
+ conn->state = LWS_EXT_XGM_STATE__MUX_BLOCK_1;
+
+ n = eff_buf->token_len;
+ while (n--)
+ if (lws_extension_x_google_mux_parser(context, wsi, ext,
+ conn, *p++) < 0) {
+ return -1;
+ }
+ return 1; /* handled */
+
+ /*
+ * when something might need sending on our transport
+ */
+
+ case LWS_EXT_CALLBACK_PACKET_TX_DO_SEND:
+
+ muxdebug("LWS_EXT_CALLBACK_PACKET_TX_DO_SEND: %p, "
+ "my subchannel=%d\n",
+ (void *)conn->wsi_parent, conn->subchannel);
+
+ pin = *((unsigned char **)in);
+ basepin = pin;
+
+ wsi_parent = conn->wsi_parent;
+
+ if (conn->subchannel == 1) {
+
+ /*
+ * if we weren't 'closed', then we were the original
+ * connection that established this link, ie, it's
+ * the parent wsi
+ */
+
+ if (conn->original_ch1_closed) {
+ fprintf(stderr, "Trying to send on dead original ch1\n");
+ return 0;
+ }
+
+ /* send on ourselves */
+
+ wsi_parent = wsi;
+
+ } else {
+
+ /*
+ * he's not a child connection of a mux
+ */
+
+ if (!conn->wsi_parent) {
+ // fprintf(stderr, "conn %p has no parent\n", (void *)conn);
+ return 0;
+ }
+
+ /*
+ * get parent / transport mux context
+ */
+
+ parent_conn = lws_get_extension_user_matching_ext(conn->wsi_parent, ext);
+ if (parent_conn == 0) {
+ muxdebug("failed to get parent conn\n");
+ return 0;
+ }
+
+ /*
+ * mux transport is in singular mode, let the caller send it
+ * no more muxified than it already is
+ */
+
+ if (!parent_conn->sticky_mux_used) {
+ // fprintf(stderr, "parent in singular mode\n");
+ return 0;
+ }
+ }
+
+ if (!conn->defeat_mux_opcode_wrapping) {
+
+ n = 1;
+ if (conn->subchannel >= 31)
+ n = 3;
+
+ /*
+ * otherwise we need to take care of the sending action using
+ * mux protocol. Prepend the channel + opcode
+ */
+
+ pin -= lws_addheader_mux_opcode(send_buf, len + n) + n;
+ basepin = pin;
+ pin += lws_addheader_mux_opcode(pin, len + n);
+
+ if (conn->subchannel >= 31) {
+ *pin++ = (31 << 3) | LWS_EXT_XGM_OPC__DATA;
+ *pin++ = conn->subchannel >> 8;
+ *pin++ = conn->subchannel;
+ } else
+ *pin++ = (conn->subchannel << 3) | LWS_EXT_XGM_OPC__DATA;
+ }
+
+ /*
+ * recurse to allow nesting
+ */
+
+ lws_issue_raw_ext_access(wsi_parent, basepin, (pin - basepin) + len);
+
+ return 1; /* handled */
+
+ case LWS_EXT_CALLBACK_1HZ:
+ /*
+ * if we have children, service their timeouts using the same
+ * handler as toplevel guys to allow recursion
+ */
+ for (n = 0; n < conn->highest_child_subchannel; n++)
+ if (conn->wsi_children[n])
+ libwebsocket_service_timeout_check(context,
+ conn->wsi_children[n], len);
+ break;
+
+ case LWS_EXT_CALLBACK_REQUEST_ON_WRITEABLE:
+ /*
+ * if a mux child is asking for callback on writable, we have
+ * to pass it up to his parent
+ */
+
+ muxdebug("LWS_EXT_CALLBACK_REQUEST_ON_WRITEABLE %s\n", wsi->protocol->name);
+
+ if (conn->wsi_parent == NULL) {
+ muxdebug(" no parent\n");
+ break;
+ }
+
+ if (!conn->awaiting_POLLOUT) {
+
+ muxdebug(" !conn->awaiting_POLLOUT\n");
+
+ conn->awaiting_POLLOUT = 1;
+ parent_conn = NULL;
+ for (m = 0; m < conn->wsi_parent->count_active_extensions; m++)
+ if (ext == conn->wsi_parent->active_extensions[m])
+ parent_conn = (struct lws_ext_x_google_mux_conn *)
+ conn->wsi_parent->active_extensions_user[m];
+
+ if (parent_conn != NULL) {
+ parent_conn->count_children_needing_POLLOUT++;
+ muxdebug(" count_children_needing_POLLOUT bumped\n");
+ } else
+ muxdebug("unable to identify parent conn\n");
+ }
+ muxdebug(" requesting on parent %p\n", (void *)conn->wsi_parent);
+ libwebsocket_callback_on_writable(context, conn->wsi_parent);
+
+ return 1;
+
+ case LWS_EXT_CALLBACK_HANDSHAKE_REPLY_TX:
+
+ muxdebug("LWS_EXT_CALLBACK_HANDSHAKE_REPLY_TX %p\n",
+ (void *)wsi->extension_handles);
+
+ /* send raw if we're not a child */
+
+ if (!wsi->extension_handles)
+ return 0;
+
+ subcommand_length = lws_mux_subcommand_header(LWS_EXT_XGM_OPC__ADDCHANNEL, ongoing_subchannel, pb, len);
+
+ pb += lws_addheader_mux_opcode(pb, subcommand_length + len);
+ pb += lws_mux_subcommand_header(LWS_EXT_XGM_OPC__ADDCHANNEL, ongoing_subchannel, pb, len);
+ memcpy(pb, in, len);
+ pb += len;
+
+ lws_issue_raw_ext_access(wsi->extension_handles, &send_buf[LWS_SEND_BUFFER_PRE_PADDING],
+ pb - &send_buf[LWS_SEND_BUFFER_PRE_PADDING]);
+
+
+ return 1; /* handled */
+
+ case LWS_EXT_CALLBACK_IS_WRITEABLE:
+ /*
+ * we are writable, inform children if any care
+ */
+ muxdebug("LWS_EXT_CALLBACK_IS_WRITEABLE: %s\n", wsi->protocol->name);
+
+ if (!conn->count_children_needing_POLLOUT) {
+ muxdebug(" no children need POLLOUT\n");
+ return 0;
+ }
+
+ for (n = 0; n < conn->highest_child_subchannel; n++) {
+
+ if (!conn->wsi_children[n])
+ continue;
+
+ child_conn = NULL;
+ for (m = 0; m < conn->wsi_children[n]->count_active_extensions; m++)
+ if (ext == conn->wsi_children[n]->active_extensions[m])
+ child_conn = (struct lws_ext_x_google_mux_conn *)
+ conn->wsi_children[n]->active_extensions_user[m];
+
+ if (!child_conn) {
+ muxdebug("unable to identify child conn\n");
+ continue;
+ }
+
+ if (!child_conn->awaiting_POLLOUT)
+ continue;
+
+ child_conn->awaiting_POLLOUT = 0;
+ conn->count_children_needing_POLLOUT--;
+ lws_handle_POLLOUT_event(context, conn->wsi_children[n], NULL);
+ if (!conn->count_children_needing_POLLOUT)
+ return 2; /* all handled */
+ else
+ return 1; /* handled but need more */
+ }
+ break;
+
+ case LWS_EXT_CALLBACK_CHECK_OK_TO_PROPOSE_EXTENSION:
+
+ /* disallow deflate-stream if we are a mux child connection */
+
+ if (strcmp(in, "deflate-stream") == 0 &&
+ client_handshake_generation_is_for_mux_child) {
+
+ muxdebug("mux banned deflate-stream on child connection\n");
+ return 1; /* disallow */
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
--- /dev/null
+
+#if 0
+#ifdef WIN32
+static
+#else
+static inline
+#endif
+void muxdebug(const char *format, ...)
+{
+ va_list ap;
+ va_start(ap, format); vfprintf(stderr, format, ap); va_end(ap);
+}
+#else
+#ifdef WIN32
+static
+#else
+static inline
+#endif
+void muxdebug(const char *format, ...)
+{
+}
+#endif
+
+#define MAX_XGM_SUBCHANNELS 8192
+
+enum lws_ext_x_google_mux__parser_states {
+ LWS_EXT_XGM_STATE__MUX_BLOCK_1,
+ LWS_EXT_XGM_STATE__MUX_BLOCK_2,
+ LWS_EXT_XGM_STATE__MUX_BLOCK_3,
+ LWS_EXT_XGM_STATE__ADDCHANNEL_LEN,
+ LWS_EXT_XGM_STATE__ADDCHANNEL_LEN16_1,
+ LWS_EXT_XGM_STATE__ADDCHANNEL_LEN16_2,
+ LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_1,
+ LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_2,
+ LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_3,
+ LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_4,
+ LWS_EXT_XGM_STATE__ADDCHANNEL_HEADERS,
+ LWS_EXT_XGM_STATE__FLOWCONTROL_1,
+ LWS_EXT_XGM_STATE__FLOWCONTROL_2,
+ LWS_EXT_XGM_STATE__FLOWCONTROL_3,
+ LWS_EXT_XGM_STATE__FLOWCONTROL_4,
+ LWS_EXT_XGM_STATE__DATA,
+};
+
+enum lws_ext_x_goole_mux__mux_opcodes {
+ LWS_EXT_XGM_OPC__DATA,
+ LWS_EXT_XGM_OPC__ADDCHANNEL,
+ LWS_EXT_XGM_OPC__DROPCHANNEL,
+ LWS_EXT_XGM_OPC__FLOWCONTROL,
+ LWS_EXT_XGM_OPC__RESERVED_4,
+ LWS_EXT_XGM_OPC__RESERVED_5,
+ LWS_EXT_XGM_OPC__RESERVED_6,
+ LWS_EXT_XGM_OPC__RESERVED_7,
+};
+
+/* one of these per context (server or client) */
+
+struct lws_ext_x_google_mux_context {
+ /*
+ * these are listing physical connections, not children sharing a
+ * parent mux physical connection
+ */
+ struct libwebsocket *wsi_muxconns[MAX_CLIENTS];
+ /*
+ * when this is < 2, we do not do any mux blocks
+ * just pure websockets
+ */
+ int active_conns;
+};
+
+/* one of these per connection (server or client) */
+
+struct lws_ext_x_google_mux_conn {
+ enum lws_ext_x_goole_mux__mux_opcodes block_subopcode;
+ int block_subchannel;
+ unsigned int length;
+ enum lws_ext_x_google_mux__parser_states state;
+ /* child points to the mux wsi using this */
+ struct libwebsocket *wsi_parent;
+ int subchannel;
+ struct libwebsocket *wsi_children[MAX_CLIENTS];
+ int highest_child_subchannel;
+ char awaiting_POLLOUT;
+ int count_children_needing_POLLOUT;
+ int sticky_mux_used;
+ int defeat_mux_opcode_wrapping;
+ int original_ch1_closed;
+ int ignore_cmd;
+};
+
+extern int
+lws_extension_callback_x_google_mux(struct libwebsocket_context *context,
+ struct libwebsocket_extension *ext,
+ struct libwebsocket *wsi,
+ enum libwebsocket_extension_callback_reasons reason,
+ void *user, void *in, size_t len);
--- /dev/null
+#include "private-libwebsockets.h"
+
+#include "extension-deflate-stream.h"
+#include "extension-x-google-mux.h"
+
+struct libwebsocket_extension libwebsocket_internal_extensions[] = {
+#ifdef LWS_EXT_GOOGLE_MUX
+ {
+ "x-google-mux",
+ lws_extension_callback_x_google_mux,
+ sizeof (struct lws_ext_x_google_mux_conn)
+ },
+#endif
+ {
+ "deflate-stream",
+ lws_extension_callback_deflate_stream,
+ sizeof (struct lws_ext_deflate_stream_conn)
+ },
+ { /* terminator */
+ NULL, NULL, 0
+ }
+};
--- /dev/null
+/*
+ * libwebsockets - small server side websockets and web server implementation
+ *
+ * Copyright (C) 2010 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include "private-libwebsockets.h"
+
+#define LWS_CPYAPP(ptr, str) { strcpy(ptr, str); ptr += strlen(str); }
+#define LWS_CPYAPP_TOKEN(ptr, tok) { strcpy(p, wsi->utf8_token[tok].token); \
+ p += wsi->utf8_token[tok].token_len; }
+
+static int
+interpret_key(const char *key, unsigned long *result)
+{
+ char digits[20];
+ int digit_pos = 0;
+ const char *p = key;
+ unsigned int spaces = 0;
+ unsigned long acc = 0;
+ int rem = 0;
+
+ while (*p) {
+ if (!isdigit(*p)) {
+ p++;
+ continue;
+ }
+ if (digit_pos == sizeof(digits) - 1)
+ return -1;
+ digits[digit_pos++] = *p++;
+ }
+ digits[digit_pos] = '\0';
+ if (!digit_pos)
+ return -2;
+
+ while (*key) {
+ if (*key == ' ')
+ spaces++;
+ key++;
+ }
+
+ if (!spaces)
+ return -3;
+
+ p = &digits[0];
+ while (*p) {
+ rem = (rem * 10) + ((*p++) - '0');
+ acc = (acc * 10) + (rem / spaces);
+ rem -= (rem / spaces) * spaces;
+ }
+
+ if (rem) {
+ fprintf(stderr, "nonzero handshake remainder\n");
+ return -1;
+ }
+
+ *result = acc;
+
+ return 0;
+}
+
+
+static int
+handshake_00(struct libwebsocket_context *context, struct libwebsocket *wsi)
+{
+ unsigned long key1, key2;
+ unsigned char sum[16];
+ char *response;
+ char *p;
+ int n;
+
+ /* Confirm we have all the necessary pieces */
+
+ if (!wsi->utf8_token[WSI_TOKEN_ORIGIN].token_len ||
+ !wsi->utf8_token[WSI_TOKEN_HOST].token_len ||
+ !wsi->utf8_token[WSI_TOKEN_CHALLENGE].token_len ||
+ !wsi->utf8_token[WSI_TOKEN_KEY1].token_len ||
+ !wsi->utf8_token[WSI_TOKEN_KEY2].token_len)
+ /* completed header processing, but missing some bits */
+ goto bail;
+
+ /* allocate the per-connection user memory (if any) */
+ if (wsi->protocol->per_session_data_size &&
+ !libwebsocket_ensure_user_space(wsi))
+ goto bail;
+
+ /* create the response packet */
+
+ /* make a buffer big enough for everything */
+
+ response = malloc(256 +
+ wsi->utf8_token[WSI_TOKEN_UPGRADE].token_len +
+ wsi->utf8_token[WSI_TOKEN_CONNECTION].token_len +
+ wsi->utf8_token[WSI_TOKEN_HOST].token_len +
+ wsi->utf8_token[WSI_TOKEN_ORIGIN].token_len +
+ wsi->utf8_token[WSI_TOKEN_GET_URI].token_len +
+ wsi->utf8_token[WSI_TOKEN_PROTOCOL].token_len);
+ if (!response) {
+ fprintf(stderr, "Out of memory for response buffer\n");
+ goto bail;
+ }
+
+ p = response;
+ LWS_CPYAPP(p, "HTTP/1.1 101 WebSocket Protocol Handshake\x0d\x0a"
+ "Upgrade: WebSocket\x0d\x0a"
+ "Connection: Upgrade\x0d\x0a"
+ "Sec-WebSocket-Origin: ");
+ strcpy(p, wsi->utf8_token[WSI_TOKEN_ORIGIN].token);
+ p += wsi->utf8_token[WSI_TOKEN_ORIGIN].token_len;
+#ifdef LWS_OPENSSL_SUPPORT
+ if (wsi->ssl) {
+ LWS_CPYAPP(p, "\x0d\x0aSec-WebSocket-Location: wss://");
+ } else {
+ LWS_CPYAPP(p, "\x0d\x0aSec-WebSocket-Location: ws://");
+ }
+#else
+ LWS_CPYAPP(p, "\x0d\x0aSec-WebSocket-Location: ws://");
+#endif
+
+ LWS_CPYAPP_TOKEN(p, WSI_TOKEN_HOST);
+ LWS_CPYAPP_TOKEN(p, WSI_TOKEN_GET_URI);
+
+ if (wsi->utf8_token[WSI_TOKEN_PROTOCOL].token) {
+ LWS_CPYAPP(p, "\x0d\x0aSec-WebSocket-Protocol: ");
+ LWS_CPYAPP_TOKEN(p, WSI_TOKEN_PROTOCOL);
+ }
+
+ LWS_CPYAPP(p, "\x0d\x0a\x0d\x0a");
+
+ /* convert the two keys into 32-bit integers */
+
+ if (interpret_key(wsi->utf8_token[WSI_TOKEN_KEY1].token, &key1))
+ goto bail;
+ if (interpret_key(wsi->utf8_token[WSI_TOKEN_KEY2].token, &key2))
+ goto bail;
+
+ /* lay them out in network byte order (MSB first */
+
+ sum[0] = key1 >> 24;
+ sum[1] = key1 >> 16;
+ sum[2] = key1 >> 8;
+ sum[3] = key1;
+ sum[4] = key2 >> 24;
+ sum[5] = key2 >> 16;
+ sum[6] = key2 >> 8;
+ sum[7] = key2;
+
+ /* follow them with the challenge token we were sent */
+
+ memcpy(&sum[8], wsi->utf8_token[WSI_TOKEN_CHALLENGE].token, 8);
+
+ /*
+ * compute the md5sum of that 16-byte series and use as our
+ * payload after our headers
+ */
+
+ MD5(sum, 16, (unsigned char *)p);
+ p += 16;
+
+ /* it's complete: go ahead and send it */
+
+ debug("issuing response packet %d len\n", (int)(p - response));
+#ifdef DEBUG
+ fwrite(response, 1, p - response, stderr);
+#endif
+ n = libwebsocket_write(wsi, (unsigned char *)response,
+ p - response, LWS_WRITE_HTTP);
+ if (n < 0) {
+ fprintf(stderr, "ERROR writing to socket");
+ goto bail;
+ }
+
+ /* alright clean up and set ourselves into established state */
+
+ free(response);
+ wsi->state = WSI_STATE_ESTABLISHED;
+ wsi->lws_rx_parse_state = LWS_RXPS_NEW;
+
+ /* notify user code that we're ready to roll */
+
+ if (wsi->protocol->callback)
+ wsi->protocol->callback(wsi->protocol->owning_server,
+ wsi, LWS_CALLBACK_ESTABLISHED,
+ wsi->user_space, NULL, 0);
+
+ return 0;
+
+bail:
+ return -1;
+}
+
+/*
+ * Perform the newer BASE64-encoded handshake scheme
+ */
+
+static int
+handshake_0405(struct libwebsocket_context *context, struct libwebsocket *wsi)
+{
+ static const char *websocket_magic_guid_04 =
+ "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
+ static const char *websocket_magic_guid_04_masking =
+ "61AC5F19-FBBA-4540-B96F-6561F1AB40A8";
+ char accept_buf[MAX_WEBSOCKET_04_KEY_LEN + 37];
+ char nonce_buf[256];
+ char mask_summing_buf[256 + MAX_WEBSOCKET_04_KEY_LEN + 37];
+ unsigned char hash[20];
+ int n;
+ char *response;
+ char *p;
+ char *m = mask_summing_buf;
+ int nonce_len = 0;
+ int accept_len;
+ char *c;
+ char ext_name[128];
+ struct libwebsocket_extension *ext;
+ int ext_count = 0;
+ int more = 1;
+
+ if (!wsi->utf8_token[WSI_TOKEN_HOST].token_len ||
+ !wsi->utf8_token[WSI_TOKEN_KEY].token_len) {
+ debug("handshake_04 missing pieces\n");
+ /* completed header processing, but missing some bits */
+ goto bail;
+ }
+
+ if (wsi->utf8_token[WSI_TOKEN_KEY].token_len >=
+ MAX_WEBSOCKET_04_KEY_LEN) {
+ fprintf(stderr, "Client sent handshake key longer "
+ "than max supported %d\n", MAX_WEBSOCKET_04_KEY_LEN);
+ goto bail;
+ }
+
+ strcpy(accept_buf, wsi->utf8_token[WSI_TOKEN_KEY].token);
+ strcpy(accept_buf + wsi->utf8_token[WSI_TOKEN_KEY].token_len,
+ websocket_magic_guid_04);
+
+ SHA1((unsigned char *)accept_buf,
+ wsi->utf8_token[WSI_TOKEN_KEY].token_len +
+ strlen(websocket_magic_guid_04), hash);
+
+ accept_len = lws_b64_encode_string((char *)hash, 20, accept_buf,
+ sizeof accept_buf);
+ if (accept_len < 0) {
+ fprintf(stderr, "Base64 encoded hash too long\n");
+ goto bail;
+ }
+
+ /* allocate the per-connection user memory (if any) */
+ if (wsi->protocol->per_session_data_size &&
+ !libwebsocket_ensure_user_space(wsi))
+ goto bail;
+
+ /* create the response packet */
+
+ /* make a buffer big enough for everything */
+
+ response = malloc(256 +
+ wsi->utf8_token[WSI_TOKEN_UPGRADE].token_len +
+ wsi->utf8_token[WSI_TOKEN_CONNECTION].token_len +
+ wsi->utf8_token[WSI_TOKEN_PROTOCOL].token_len);
+ if (!response) {
+ fprintf(stderr, "Out of memory for response buffer\n");
+ goto bail;
+ }
+
+ p = response;
+ LWS_CPYAPP(p, "HTTP/1.1 101 Switching Protocols\x0d\x0a"
+ "Upgrade: WebSocket\x0d\x0a"
+ "Connection: Upgrade\x0d\x0a"
+ "Sec-WebSocket-Accept: ");
+ strcpy(p, accept_buf);
+ p += accept_len;
+
+ if (wsi->ietf_spec_revision == 4) {
+ LWS_CPYAPP(p, "\x0d\x0aSec-WebSocket-Nonce: ");
+
+ /* select the nonce */
+
+ n = libwebsockets_get_random(wsi->protocol->owning_server,
+ hash, 16);
+ if (n != 16) {
+ fprintf(stderr, "Unable to read random device %s %d\n",
+ SYSTEM_RANDOM_FILEPATH, n);
+ if (wsi->user_space)
+ free(wsi->user_space);
+ goto bail;
+ }
+
+ /* encode the nonce */
+
+ nonce_len = lws_b64_encode_string((const char *)hash, 16,
+ nonce_buf, sizeof nonce_buf);
+ if (nonce_len < 0) {
+ fprintf(stderr, "Failed to base 64 encode the nonce\n");
+ if (wsi->user_space)
+ free(wsi->user_space);
+ goto bail;
+ }
+
+ /* apply the nonce */
+
+ strcpy(p, nonce_buf);
+ p += nonce_len;
+ }
+
+ if (wsi->utf8_token[WSI_TOKEN_PROTOCOL].token) {
+ LWS_CPYAPP(p, "\x0d\x0aSec-WebSocket-Protocol: ");
+ LWS_CPYAPP_TOKEN(p, WSI_TOKEN_PROTOCOL);
+ }
+
+ /*
+ * Figure out which extensions the client has that we want to
+ * enable on this connection, and give him back the list
+ */
+
+ if (wsi->utf8_token[WSI_TOKEN_EXTENSIONS].token_len) {
+
+ /*
+ * break down the list of client extensions
+ * and go through them
+ */
+
+ c = wsi->utf8_token[WSI_TOKEN_EXTENSIONS].token;
+ debug("wsi->utf8_token[WSI_TOKEN_EXTENSIONS].token = %s\n",
+ wsi->utf8_token[WSI_TOKEN_EXTENSIONS].token);
+ wsi->count_active_extensions = 0;
+ n = 0;
+ while (more) {
+
+ if (*c && (*c != ',' && *c != ' ' && *c != '\t')) {
+ ext_name[n] = *c++;
+ if (n < sizeof(ext_name) - 1)
+ n++;
+ continue;
+ }
+ ext_name[n] = '\0';
+ if (!*c)
+ more = 0;
+ else {
+ c++;
+ if (!n)
+ continue;
+ }
+
+ /* check a client's extension against our support */
+
+ ext = wsi->protocol->owning_server->extensions;
+
+ while (ext && ext->callback) {
+
+ if (strcmp(ext_name, ext->name)) {
+ ext++;
+ continue;
+ }
+
+ /*
+ * oh, we do support this one he
+ * asked for... but let's ask user
+ * code if it's OK to apply it on this
+ * particular connection + protocol
+ */
+
+ n = wsi->protocol->owning_server->
+ protocols[0].callback(
+ wsi->protocol->owning_server,
+ wsi,
+ LWS_CALLBACK_CONFIRM_EXTENSION_OKAY,
+ wsi->user_space, ext_name, 0);
+
+ /*
+ * zero return from callback means
+ * go ahead and allow the extension,
+ * it's what we get if the callback is
+ * unhandled
+ */
+
+ if (n) {
+ ext++;
+ continue;
+ }
+
+ /* apply it */
+
+ if (ext_count)
+ *p++ = ',';
+ else
+ LWS_CPYAPP(p,
+ "\x0d\x0aSec-WebSocket-Extensions: ");
+ p += sprintf(p, "%s", ext_name);
+ ext_count++;
+
+ /* instantiate the extension on this conn */
+
+ wsi->active_extensions_user[
+ wsi->count_active_extensions] =
+ malloc(ext->per_session_data_size);
+ memset(wsi->active_extensions_user[
+ wsi->count_active_extensions], 0,
+ ext->per_session_data_size);
+
+ wsi->active_extensions[
+ wsi->count_active_extensions] = ext;
+
+ /* allow him to construct his context */
+
+ ext->callback(wsi->protocol->owning_server,
+ ext, wsi,
+ LWS_EXT_CALLBACK_CONSTRUCT,
+ wsi->active_extensions_user[
+ wsi->count_active_extensions], NULL, 0);
+
+ wsi->count_active_extensions++;
+ debug("wsi->count_active_extensions <- %d",
+ wsi->count_active_extensions);
+
+ ext++;
+ }
+
+ n = 0;
+ }
+ }
+
+ /* end of response packet */
+
+ LWS_CPYAPP(p, "\x0d\x0a\x0d\x0a");
+
+ if (wsi->ietf_spec_revision == 4) {
+
+ /*
+ * precompute the masking key the client will use from the SHA1
+ * hash of ( base 64 client key we were sent, concatenated with
+ * the bse 64 nonce we sent, concatenated with a magic constant
+ * guid specified by the 04 standard )
+ *
+ * We store the hash in the connection's wsi ready to use with
+ * undoing the masking the client has done on framed data it
+ * sends (we send our data to the client in clear).
+ */
+
+ strcpy(mask_summing_buf, wsi->utf8_token[WSI_TOKEN_KEY].token);
+ m += wsi->utf8_token[WSI_TOKEN_KEY].token_len;
+ strcpy(m, nonce_buf);
+ m += nonce_len;
+ strcpy(m, websocket_magic_guid_04_masking);
+ m += strlen(websocket_magic_guid_04_masking);
+
+ SHA1((unsigned char *)mask_summing_buf, m - mask_summing_buf,
+ wsi->masking_key_04);
+ }
+
+ if (!lws_any_extension_handled(context, wsi,
+ LWS_EXT_CALLBACK_HANDSHAKE_REPLY_TX,
+ response, p - response)) {
+
+ /* okay send the handshake response accepting the connection */
+
+ debug("issuing response packet %d len\n", (int)(p - response));
+ #ifdef DEBUG
+ fwrite(response, 1, p - response, stderr);
+ #endif
+ n = libwebsocket_write(wsi, (unsigned char *)response,
+ p - response, LWS_WRITE_HTTP);
+ if (n < 0) {
+ fprintf(stderr, "ERROR writing to socket");
+ goto bail;
+ }
+
+ }
+
+ /* alright clean up and set ourselves into established state */
+
+ free(response);
+ wsi->state = WSI_STATE_ESTABLISHED;
+ wsi->lws_rx_parse_state = LWS_RXPS_NEW;
+ wsi->rx_packet_length = 0;
+
+ /* notify user code that we're ready to roll */
+
+ if (wsi->protocol->callback)
+ wsi->protocol->callback(wsi->protocol->owning_server,
+ wsi, LWS_CALLBACK_ESTABLISHED,
+ wsi->user_space, NULL, 0);
+
+ return 0;
+
+
+bail:
+ return -1;
+}
+
+
+/*
+ * -04 of the protocol (actually the 80th version) has a radically different
+ * handshake. The 04 spec gives the following idea
+ *
+ * The handshake from the client looks as follows:
+ *
+ * GET /chat HTTP/1.1
+ * Host: server.example.com
+ * Upgrade: websocket
+ * Connection: Upgrade
+ * Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
+ * Sec-WebSocket-Origin: http://example.com
+ * Sec-WebSocket-Protocol: chat, superchat
+ * Sec-WebSocket-Version: 4
+ *
+ * The handshake from the server looks as follows:
+ *
+ * HTTP/1.1 101 Switching Protocols
+ * Upgrade: websocket
+ * Connection: Upgrade
+ * Sec-WebSocket-Accept: me89jWimTRKTWwrS3aRrL53YZSo=
+ * Sec-WebSocket-Nonce: AQIDBAUGBwgJCgsMDQ4PEC==
+ * Sec-WebSocket-Protocol: chat
+ */
+
+/*
+ * We have to take care about parsing because the headers may be split
+ * into multiple fragments. They may contain unknown headers with arbitrary
+ * argument lengths. So, we parse using a single-character at a time state
+ * machine that is completely independent of packet size.
+ */
+
+int
+libwebsocket_read(struct libwebsocket_context *context,
+ struct libwebsocket *wsi, unsigned char * buf, size_t len)
+{
+ size_t n;
+
+ switch (wsi->state) {
+ case WSI_STATE_HTTP:
+ wsi->state = WSI_STATE_HTTP_HEADERS;
+ wsi->parser_state = WSI_TOKEN_NAME_PART;
+ /* fallthru */
+ case WSI_STATE_HTTP_HEADERS:
+
+ debug("issuing %d bytes to parser\n", (int)len);
+#ifdef DEBUG
+ fwrite(buf, 1, len, stderr);
+#endif
+
+ switch (wsi->mode) {
+ case LWS_CONNMODE_WS_CLIENT_WAITING_PROXY_REPLY:
+ case LWS_CONNMODE_WS_CLIENT_ISSUE_HANDSHAKE:
+ case LWS_CONNMODE_WS_CLIENT_WAITING_SERVER_REPLY:
+ case LWS_CONNMODE_WS_CLIENT_WAITING_EXTENSION_CONNECT:
+ case LWS_CONNMODE_WS_CLIENT:
+ for (n = 0; n < len; n++)
+ libwebsocket_client_rx_sm(wsi, *buf++);
+
+ return 0;
+ default:
+ break;
+ }
+
+ /* LWS_CONNMODE_WS_SERVING */
+
+ for (n = 0; n < len; n++)
+ libwebsocket_parse(wsi, *buf++);
+
+ if (wsi->parser_state != WSI_PARSING_COMPLETE)
+ break;
+
+ debug("seem to be serving, mode is %d\n", wsi->mode);
+
+ debug("libwebsocket_parse sees parsing complete\n");
+
+ /* is this websocket protocol or normal http 1.0? */
+
+ if (!wsi->utf8_token[WSI_TOKEN_UPGRADE].token_len ||
+ !wsi->utf8_token[WSI_TOKEN_CONNECTION].token_len) {
+ wsi->state = WSI_STATE_HTTP;
+ if (wsi->protocol->callback)
+ (wsi->protocol->callback)(context, wsi,
+ LWS_CALLBACK_HTTP, wsi->user_space,
+ wsi->utf8_token[WSI_TOKEN_GET_URI].token, 0);
+ return 0;
+ }
+
+ if (!wsi->protocol)
+ fprintf(stderr, "NULL protocol at libwebsocket_read\n");
+
+ /*
+ * It's websocket
+ *
+ * Make sure user side is happy about protocol
+ */
+
+ while (wsi->protocol->callback) {
+
+ if (wsi->utf8_token[WSI_TOKEN_PROTOCOL].token == NULL) {
+ if (wsi->protocol->name == NULL)
+ break;
+ } else
+ if (wsi->protocol->name && strcmp(
+ wsi->utf8_token[WSI_TOKEN_PROTOCOL].token,
+ wsi->protocol->name) == 0)
+ break;
+
+ wsi->protocol++;
+ }
+
+ /* we didn't find a protocol he wanted? */
+
+ if (wsi->protocol->callback == NULL) {
+ if (wsi->utf8_token[WSI_TOKEN_PROTOCOL].token == NULL)
+ fprintf(stderr, "[no protocol] "
+ "not supported (use NULL .name)\n");
+ else
+ fprintf(stderr, "Requested protocol %s "
+ "not supported\n",
+ wsi->utf8_token[WSI_TOKEN_PROTOCOL].token);
+ goto bail;
+ }
+
+ /*
+ * find out which spec version the client is using
+ * if this header is not given, we default to 00 (aka 76)
+ */
+
+ if (wsi->utf8_token[WSI_TOKEN_VERSION].token_len)
+ wsi->ietf_spec_revision =
+ atoi(wsi->utf8_token[WSI_TOKEN_VERSION].token);
+
+ /*
+ * Give the user code a chance to study the request and
+ * have the opportunity to deny it
+ */
+
+ if ((wsi->protocol->callback)(wsi->protocol->owning_server, wsi,
+ LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION,
+ &wsi->utf8_token[0], NULL, 0)) {
+ fprintf(stderr, "User code denied connection\n");
+ goto bail;
+ }
+
+
+ /*
+ * Perform the handshake according to the protocol version the
+ * client announced
+ */
+
+ switch (wsi->ietf_spec_revision) {
+ case 0: /* applies to 76 and 00 */
+ wsi->xor_mask = xor_no_mask;
+ if (handshake_00(context, wsi))
+ goto bail;
+ break;
+ case 4: /* 04 */
+ wsi->xor_mask = xor_mask_04;
+ debug("libwebsocket_parse calling handshake_04\n");
+ if (handshake_0405(context, wsi))
+ goto bail;
+ break;
+ case 5:
+ case 6:
+ case 7:
+ case 8:
+ case 13:
+ wsi->xor_mask = xor_mask_05;
+ debug("libwebsocket_parse calling handshake_04\n");
+ if (handshake_0405(context, wsi))
+ goto bail;
+ break;
+
+ default:
+ fprintf(stderr, "Unknown client spec version %d\n",
+ wsi->ietf_spec_revision);
+ goto bail;
+ }
+
+ debug("accepted v%02d connection\n",
+ wsi->ietf_spec_revision);
+
+ break;
+
+ case WSI_STATE_AWAITING_CLOSE_ACK:
+ case WSI_STATE_ESTABLISHED:
+ switch (wsi->mode) {
+ case LWS_CONNMODE_WS_CLIENT:
+ for (n = 0; n < len; n++)
+ if (libwebsocket_client_rx_sm(wsi, *buf++) < 0)
+ goto bail;
+
+ return 0;
+ default:
+ break;
+ }
+
+ /* LWS_CONNMODE_WS_SERVING */
+
+ if (libwebsocket_interpret_incoming_packet(wsi, buf, len) < 0)
+ goto bail;
+
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+
+bail:
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NOSTATUS);
+
+ return -1;
+}
--- /dev/null
+/*
+ * libwebsockets - small server side websockets and web server implementation
+ *
+ * Copyright (C) 2010 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include "private-libwebsockets.h"
+
+#ifdef WIN32
+
+#else
+#include <ifaddrs.h>
+#include <sys/un.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#endif
+
+#ifdef LWS_OPENSSL_SUPPORT
+int openssl_websocket_private_data_index;
+#endif
+
+#ifdef __MINGW32__
+#include "../win32port/win32helpers/websock-w32.c"
+#else
+#ifdef __MINGW64__
+#include "../win32port/win32helpers/websock-w32.c"
+#endif
+#endif
+
+/*
+ * In-place str to lower case
+ */
+
+static void
+strtolower(char *s)
+{
+ while (*s) {
+ *s = tolower(*s);
+ s++;
+ }
+}
+
+/* file descriptor hash management */
+
+struct libwebsocket *
+wsi_from_fd(struct libwebsocket_context *context, int fd)
+{
+ int h = LWS_FD_HASH(fd);
+ int n = 0;
+
+ for (n = 0; n < context->fd_hashtable[h].length; n++)
+ if (context->fd_hashtable[h].wsi[n]->sock == fd)
+ return context->fd_hashtable[h].wsi[n];
+
+ return NULL;
+}
+
+int
+insert_wsi(struct libwebsocket_context *context, struct libwebsocket *wsi)
+{
+ int h = LWS_FD_HASH(wsi->sock);
+
+ if (context->fd_hashtable[h].length == MAX_CLIENTS - 1) {
+ fprintf(stderr, "hash table overflow\n");
+ return 1;
+ }
+
+ context->fd_hashtable[h].wsi[context->fd_hashtable[h].length++] = wsi;
+
+ return 0;
+}
+
+int
+delete_from_fd(struct libwebsocket_context *context, int fd)
+{
+ int h = LWS_FD_HASH(fd);
+ int n = 0;
+
+ for (n = 0; n < context->fd_hashtable[h].length; n++)
+ if (context->fd_hashtable[h].wsi[n]->sock == fd) {
+ while (n < context->fd_hashtable[h].length) {
+ context->fd_hashtable[h].wsi[n] =
+ context->fd_hashtable[h].wsi[n + 1];
+ n++;
+ }
+ context->fd_hashtable[h].length--;
+
+ return 0;
+ }
+
+ fprintf(stderr, "Failed to find fd %d requested for "
+ "delete in hashtable\n", fd);
+ return 1;
+}
+
+#ifdef LWS_OPENSSL_SUPPORT
+static void
+libwebsockets_decode_ssl_error(void)
+{
+ char buf[256];
+ u_long err;
+
+ while ((err = ERR_get_error()) != 0) {
+ ERR_error_string_n(err, buf, sizeof(buf));
+ fprintf(stderr, "*** %s\n", buf);
+ }
+}
+#endif
+
+
+static int
+interface_to_sa(const char *ifname, struct sockaddr_in *addr, size_t addrlen)
+{
+ int rc = -1;
+#ifdef WIN32
+ /* TODO */
+#else
+ struct ifaddrs *ifr;
+ struct ifaddrs *ifc;
+ struct sockaddr_in *sin;
+
+ getifaddrs(&ifr);
+ for (ifc = ifr; ifc != NULL; ifc = ifc->ifa_next) {
+ if (strcmp(ifc->ifa_name, ifname))
+ continue;
+ if (ifc->ifa_addr == NULL)
+ continue;
+ sin = (struct sockaddr_in *)ifc->ifa_addr;
+ if (sin->sin_family != AF_INET)
+ continue;
+ memcpy(addr, sin, addrlen);
+ rc = 0;
+ }
+
+ freeifaddrs(ifr);
+#endif
+ return rc;
+}
+
+void
+libwebsocket_close_and_free_session(struct libwebsocket_context *context,
+ struct libwebsocket *wsi, enum lws_close_status reason)
+{
+ int n;
+ int old_state;
+ unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 2 +
+ LWS_SEND_BUFFER_POST_PADDING];
+ int ret;
+ int m;
+ struct lws_tokens eff_buf;
+ struct libwebsocket_extension *ext;
+
+ if (!wsi)
+ return;
+
+ old_state = wsi->state;
+
+ if (old_state == WSI_STATE_DEAD_SOCKET)
+ return;
+
+ wsi->close_reason = reason;
+
+ /*
+ * are his extensions okay with him closing? Eg he might be a mux
+ * parent and just his ch1 aspect is closing?
+ */
+
+
+ for (n = 0; n < wsi->count_active_extensions; n++) {
+ if (!wsi->active_extensions[n]->callback)
+ continue;
+
+ m = wsi->active_extensions[n]->callback(context,
+ wsi->active_extensions[n], wsi,
+ LWS_EXT_CALLBACK_CHECK_OK_TO_REALLY_CLOSE,
+ wsi->active_extensions_user[n], NULL, 0);
+
+ /*
+ * if somebody vetoed actually closing him at this time....
+ * up to the extension to track the attempted close, let's
+ * just bail
+ */
+
+ if (m) {
+ debug("extension vetoed close\n");
+ return;
+ }
+ }
+
+
+
+ /*
+ * flush any tx pending from extensions, since we may send close packet
+ * if there are problems with send, just nuke the connection
+ */
+
+ ret = 1;
+ while (ret == 1) {
+
+ /* default to nobody has more to spill */
+
+ ret = 0;
+ eff_buf.token = NULL;
+ eff_buf.token_len = 0;
+
+ /* show every extension the new incoming data */
+
+ for (n = 0; n < wsi->count_active_extensions; n++) {
+ m = wsi->active_extensions[n]->callback(
+ wsi->protocol->owning_server,
+ wsi->active_extensions[n], wsi,
+ LWS_EXT_CALLBACK_FLUSH_PENDING_TX,
+ wsi->active_extensions_user[n], &eff_buf, 0);
+ if (m < 0) {
+ fprintf(stderr, "Extension reports "
+ "fatal error\n");
+ goto just_kill_connection;
+ }
+ if (m)
+ /*
+ * at least one extension told us he has more
+ * to spill, so we will go around again after
+ */
+ ret = 1;
+ }
+
+ /* assuming they left us something to send, send it */
+
+ if (eff_buf.token_len)
+ if (lws_issue_raw(wsi, (unsigned char *)eff_buf.token,
+ eff_buf.token_len))
+ goto just_kill_connection;
+ }
+
+ /*
+ * signal we are closing, libsocket_write will
+ * add any necessary version-specific stuff. If the write fails,
+ * no worries we are closing anyway. If we didn't initiate this
+ * close, then our state has been changed to
+ * WSI_STATE_RETURNED_CLOSE_ALREADY and we will skip this.
+ *
+ * Likewise if it's a second call to close this connection after we
+ * sent the close indication to the peer already, we are in state
+ * WSI_STATE_AWAITING_CLOSE_ACK and will skip doing this a second time.
+ */
+
+ if (old_state == WSI_STATE_ESTABLISHED &&
+ reason != LWS_CLOSE_STATUS_NOSTATUS) {
+
+ debug("sending close indication...\n");
+
+ n = libwebsocket_write(wsi, &buf[LWS_SEND_BUFFER_PRE_PADDING],
+ 0, LWS_WRITE_CLOSE);
+ if (!n) {
+ /*
+ * we have sent a nice protocol level indication we
+ * now wish to close, we should not send anything more
+ */
+
+ wsi->state = WSI_STATE_AWAITING_CLOSE_ACK;
+
+ /* and we should wait for a reply for a bit */
+
+ libwebsocket_set_timeout(wsi,
+ PENDING_TIMEOUT_CLOSE_ACK, 5);
+
+ debug("sent close indication, awaiting ack\n");
+
+ return;
+ }
+
+ /* else, the send failed and we should just hang up */
+ }
+
+just_kill_connection:
+
+ debug("libwebsocket_close_and_free_session: just_kill_connection\n");
+
+ /*
+ * we won't be servicing or receiving anything further from this guy
+ * remove this fd from wsi mapping hashtable
+ */
+
+ if (wsi->sock)
+ delete_from_fd(context, wsi->sock);
+
+ /* delete it from the internal poll list if still present */
+
+ for (n = 0; n < context->fds_count; n++) {
+ if (context->fds[n].fd != wsi->sock)
+ continue;
+ while (n < context->fds_count - 1) {
+ context->fds[n] = context->fds[n + 1];
+ n++;
+ }
+ context->fds_count--;
+ /* we only have to deal with one */
+ n = context->fds_count;
+ }
+
+ /* remove also from external POLL support via protocol 0 */
+ if (wsi->sock)
+ context->protocols[0].callback(context, wsi,
+ LWS_CALLBACK_DEL_POLL_FD, (void *)(long)wsi->sock, NULL, 0);
+
+ wsi->state = WSI_STATE_DEAD_SOCKET;
+
+ /* tell the user it's all over for this guy */
+
+ if (wsi->protocol && wsi->protocol->callback &&
+ ((old_state == WSI_STATE_ESTABLISHED) ||
+ (old_state == WSI_STATE_RETURNED_CLOSE_ALREADY) ||
+ (old_state == WSI_STATE_AWAITING_CLOSE_ACK))) {
+ debug("calling back CLOSED\n");
+ wsi->protocol->callback(context, wsi, LWS_CALLBACK_CLOSED,
+ wsi->user_space, NULL, 0);
+ } else
+ debug("not calling back closed, old_state=%d\n", old_state);
+
+ /* deallocate any active extension contexts */
+
+ for (n = 0; n < wsi->count_active_extensions; n++) {
+ if (!wsi->active_extensions[n]->callback)
+ continue;
+
+ wsi->active_extensions[n]->callback(context,
+ wsi->active_extensions[n], wsi,
+ LWS_EXT_CALLBACK_DESTROY,
+ wsi->active_extensions_user[n], NULL, 0);
+
+ free(wsi->active_extensions_user[n]);
+ }
+
+ /*
+ * inform all extensions in case they tracked this guy out of band
+ * even though not active on him specifically
+ */
+
+ ext = context->extensions;
+ while (ext && ext->callback) {
+ ext->callback(context, ext, wsi,
+ LWS_EXT_CALLBACK_DESTROY_ANY_WSI_CLOSING,
+ NULL, NULL, 0);
+ ext++;
+ }
+
+ /* free up his parsing allocations */
+
+ for (n = 0; n < WSI_TOKEN_COUNT; n++)
+ if (wsi->utf8_token[n].token)
+ free(wsi->utf8_token[n].token);
+
+ if (wsi->c_address)
+ free(wsi->c_address);
+
+/* fprintf(stderr, "closing fd=%d\n", wsi->sock); */
+
+#ifdef LWS_OPENSSL_SUPPORT
+ if (wsi->ssl) {
+ n = SSL_get_fd(wsi->ssl);
+ SSL_shutdown(wsi->ssl);
+#ifdef WIN32
+ closesocket(n);
+#else
+ close(n);
+#endif
+ SSL_free(wsi->ssl);
+ } else {
+#endif
+ shutdown(wsi->sock, SHUT_RDWR);
+#ifdef WIN32
+ if (wsi->sock)
+ closesocket(wsi->sock);
+#else
+ if (wsi->sock)
+ close(wsi->sock);
+#endif
+#ifdef LWS_OPENSSL_SUPPORT
+ }
+#endif
+ if (wsi->protocol && wsi->protocol->per_session_data_size && wsi->user_space) /* user code may own */
+ free(wsi->user_space);
+
+ free(wsi);
+}
+
+/**
+ * libwebsockets_hangup_on_client() - Server calls to terminate client
+ * connection
+ * @context: libwebsockets context
+ * @fd: Connection socket descriptor
+ */
+
+void
+libwebsockets_hangup_on_client(struct libwebsocket_context *context, int fd)
+{
+ struct libwebsocket *wsi = wsi_from_fd(context, fd);
+
+ if (wsi == NULL)
+ return;
+
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NOSTATUS);
+}
+
+
+/**
+ * libwebsockets_get_peer_addresses() - Get client address information
+ * @fd: Connection socket descriptor
+ * @name: Buffer to take client address name
+ * @name_len: Length of client address name buffer
+ * @rip: Buffer to take client address IP qotted quad
+ * @rip_len: Length of client address IP buffer
+ *
+ * This function fills in @name and @rip with the name and IP of
+ * the client connected with socket descriptor @fd. Names may be
+ * truncated if there is not enough room. If either cannot be
+ * determined, they will be returned as valid zero-length strings.
+ */
+
+void
+libwebsockets_get_peer_addresses(int fd, char *name, int name_len,
+ char *rip, int rip_len)
+{
+ unsigned int len;
+ struct sockaddr_in sin;
+ struct hostent *host;
+ struct hostent *host1;
+ char ip[128];
+ unsigned char *p;
+ int n;
+ struct sockaddr_un *un;
+
+ rip[0] = '\0';
+ name[0] = '\0';
+
+ len = sizeof sin;
+ if (getpeername(fd, (struct sockaddr *) &sin, &len) < 0) {
+ perror("getpeername");
+ return;
+ }
+
+ host = gethostbyaddr((char *) &sin.sin_addr, sizeof sin.sin_addr,
+ AF_INET);
+ if (host == NULL) {
+ perror("gethostbyaddr");
+ return;
+ }
+
+ strncpy(name, host->h_name, name_len);
+ name[name_len - 1] = '\0';
+
+ host1 = gethostbyname(host->h_name);
+ if (host1 == NULL)
+ return;
+ p = (unsigned char *)host1;
+ n = 0;
+ while (p != NULL) {
+ p = (unsigned char *)host1->h_addr_list[n++];
+ if (p == NULL)
+ continue;
+ if ((host1->h_addrtype != AF_INET)
+#ifdef AF_LOCAL
+ && (host1->h_addrtype != AF_LOCAL)
+#endif
+ )
+ continue;
+
+ if (host1->h_addrtype == AF_INET)
+ sprintf(ip, "%u.%u.%u.%u", p[0], p[1], p[2], p[3]);
+#ifdef AF_LOCAL
+ else {
+ un = (struct sockaddr_un *)p;
+ strncpy(ip, un->sun_path, sizeof(ip) - 1);
+ ip[sizeof(ip) - 1] = '\0';
+ }
+#endif
+ p = NULL;
+ strncpy(rip, ip, rip_len);
+ rip[rip_len - 1] = '\0';
+ }
+}
+
+int libwebsockets_get_random(struct libwebsocket_context *context,
+ void *buf, int len)
+{
+ int n;
+ char *p = buf;
+
+#ifdef WIN32
+ for (n = 0; n < len; n++)
+ p[n] = (unsigned char)rand();
+#else
+ n = read(context->fd_random, p, len);
+#endif
+
+ return n;
+}
+
+unsigned char *
+libwebsockets_SHA1(const unsigned char *d, size_t n, unsigned char *md)
+{
+ return SHA1(d, n, md);
+}
+
+void libwebsockets_00_spaceout(char *key, int spaces, int seed)
+{
+ char *p;
+
+ key++;
+ while (spaces--) {
+ if (*key && (seed & 1))
+ key++;
+ seed >>= 1;
+
+ p = key + strlen(key);
+ while (p >= key) {
+ p[1] = p[0];
+ p--;
+ }
+ *key++ = ' ';
+ }
+}
+
+void libwebsockets_00_spam(char *key, int count, int seed)
+{
+ char *p;
+
+ key++;
+ while (count--) {
+
+ if (*key && (seed & 1))
+ key++;
+ seed >>= 1;
+
+ p = key + strlen(key);
+ while (p >= key) {
+ p[1] = p[0];
+ p--;
+ }
+ *key++ = 0x21 + ((seed & 0xffff) % 15);
+ /* 4 would use it up too fast.. not like it matters */
+ seed >>= 1;
+ }
+}
+
+int lws_send_pipe_choked(struct libwebsocket *wsi)
+{
+ struct pollfd fds;
+
+ fds.fd = wsi->sock;
+ fds.events = POLLOUT;
+ fds.revents = 0;
+
+ if (poll(&fds, 1, 0) != 1)
+ return 1;
+
+ if ((fds.revents & POLLOUT) == 0)
+ return 1;
+
+ /* okay to send another packet without blocking */
+
+ return 0;
+}
+
+int
+lws_handle_POLLOUT_event(struct libwebsocket_context *context,
+ struct libwebsocket *wsi, struct pollfd *pollfd)
+{
+ struct lws_tokens eff_buf;
+ int n;
+ int ret;
+ int m;
+ int handled = 0;
+
+ for (n = 0; n < wsi->count_active_extensions; n++) {
+ if (!wsi->active_extensions[n]->callback)
+ continue;
+
+ m = wsi->active_extensions[n]->callback(context,
+ wsi->active_extensions[n], wsi,
+ LWS_EXT_CALLBACK_IS_WRITEABLE,
+ wsi->active_extensions_user[n], NULL, 0);
+ if (m > handled)
+ handled = m;
+ }
+
+ if (handled == 1)
+ goto notify_action;
+
+ if (!wsi->extension_data_pending || handled == 2)
+ goto user_service;
+
+ /*
+ * check in on the active extensions, see if they
+ * had pending stuff to spill... they need to get the
+ * first look-in otherwise sequence will be disordered
+ *
+ * NULL, zero-length eff_buf means just spill pending
+ */
+
+ ret = 1;
+ while (ret == 1) {
+
+ /* default to nobody has more to spill */
+
+ ret = 0;
+ eff_buf.token = NULL;
+ eff_buf.token_len = 0;
+
+ /* give every extension a chance to spill */
+
+ for (n = 0; n < wsi->count_active_extensions; n++) {
+ m = wsi->active_extensions[n]->callback(
+ wsi->protocol->owning_server,
+ wsi->active_extensions[n], wsi,
+ LWS_EXT_CALLBACK_PACKET_TX_PRESEND,
+ wsi->active_extensions_user[n], &eff_buf, 0);
+ if (m < 0) {
+ fprintf(stderr, "ext reports fatal error\n");
+ return -1;
+ }
+ if (m)
+ /*
+ * at least one extension told us he has more
+ * to spill, so we will go around again after
+ */
+ ret = 1;
+ }
+
+ /* assuming they gave us something to send, send it */
+
+ if (eff_buf.token_len) {
+ if (lws_issue_raw(wsi, (unsigned char *)eff_buf.token,
+ eff_buf.token_len))
+ return -1;
+ } else
+ continue;
+
+ /* no extension has more to spill */
+
+ if (!ret)
+ continue;
+
+ /*
+ * There's more to spill from an extension, but we just sent
+ * something... did that leave the pipe choked?
+ */
+
+ if (!lws_send_pipe_choked(wsi))
+ /* no we could add more */
+ continue;
+
+ debug("choked in POLLOUT service\n");
+
+ /*
+ * Yes, he's choked. Leave the POLLOUT masked on so we will
+ * come back here when he is unchoked. Don't call the user
+ * callback to enforce ordering of spilling, he'll get called
+ * when we come back here and there's nothing more to spill.
+ */
+
+ return 0;
+ }
+
+ wsi->extension_data_pending = 0;
+
+user_service:
+ /* one shot */
+
+ if (pollfd) {
+ pollfd->events &= ~POLLOUT;
+
+ /* external POLL support via protocol 0 */
+ context->protocols[0].callback(context, wsi,
+ LWS_CALLBACK_CLEAR_MODE_POLL_FD,
+ (void *)(long)wsi->sock, NULL, POLLOUT);
+ }
+
+notify_action:
+
+ if (wsi->mode == LWS_CONNMODE_WS_CLIENT)
+ n = LWS_CALLBACK_CLIENT_WRITEABLE;
+ else
+ n = LWS_CALLBACK_SERVER_WRITEABLE;
+
+ wsi->protocol->callback(context, wsi, n, wsi->user_space, NULL, 0);
+
+ return 0;
+}
+
+
+
+void
+libwebsocket_service_timeout_check(struct libwebsocket_context *context,
+ struct libwebsocket *wsi, unsigned int sec)
+{
+ int n;
+
+ /*
+ * if extensions want in on it (eg, we are a mux parent)
+ * give them a chance to service child timeouts
+ */
+
+ for (n = 0; n < wsi->count_active_extensions; n++)
+ wsi->active_extensions[n]->callback(
+ context, wsi->active_extensions[n],
+ wsi, LWS_EXT_CALLBACK_1HZ,
+ wsi->active_extensions_user[n], NULL, sec);
+
+ if (!wsi->pending_timeout)
+ return;
+
+ /*
+ * if we went beyond the allowed time, kill the
+ * connection
+ */
+
+ if (sec > wsi->pending_timeout_limit) {
+ debug("TIMEDOUT WAITING\n");
+ libwebsocket_close_and_free_session(context,
+ wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ }
+}
+
+struct libwebsocket *
+libwebsocket_create_new_server_wsi(struct libwebsocket_context *context)
+{
+ struct libwebsocket *new_wsi;
+ int n;
+
+ new_wsi = malloc(sizeof(struct libwebsocket));
+ if (new_wsi == NULL) {
+ fprintf(stderr, "Out of memory for new connection\n");
+ return NULL;
+ }
+
+ memset(new_wsi, 0, sizeof(struct libwebsocket));
+ new_wsi->count_active_extensions = 0;
+ new_wsi->pending_timeout = NO_PENDING_TIMEOUT;
+
+ /* intialize the instance struct */
+
+ new_wsi->state = WSI_STATE_HTTP;
+ new_wsi->name_buffer_pos = 0;
+ new_wsi->mode = LWS_CONNMODE_WS_SERVING;
+
+ for (n = 0; n < WSI_TOKEN_COUNT; n++) {
+ new_wsi->utf8_token[n].token = NULL;
+ new_wsi->utf8_token[n].token_len = 0;
+ }
+
+ /*
+ * these can only be set once the protocol is known
+ * we set an unestablished connection's protocol pointer
+ * to the start of the supported list, so it can look
+ * for matching ones during the handshake
+ */
+ new_wsi->protocol = context->protocols;
+ new_wsi->user_space = NULL;
+
+ /*
+ * Default protocol is 76 / 00
+ * After 76, there's a header specified to inform which
+ * draft the client wants, when that's seen we modify
+ * the individual connection's spec revision accordingly
+ */
+ new_wsi->ietf_spec_revision = 0;
+
+ return new_wsi;
+}
+
+char *
+libwebsockets_generate_client_handshake(struct libwebsocket_context *context,
+ struct libwebsocket *wsi, char *pkt)
+{
+ char hash[20];
+ char *p = pkt;
+ int n;
+ struct libwebsocket_extension *ext;
+ struct libwebsocket_extension *ext1;
+ int ext_count = 0;
+ unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 1 +
+ MAX_BROADCAST_PAYLOAD + LWS_SEND_BUFFER_POST_PADDING];
+ static const char magic_websocket_guid[] =
+ "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
+
+ /*
+ * create the random key
+ */
+
+ n = libwebsockets_get_random(context, hash, 16);
+ if (n != 16) {
+ fprintf(stderr, "Unable to read from random dev %s\n",
+ SYSTEM_RANDOM_FILEPATH);
+ free(wsi->c_path);
+ free(wsi->c_host);
+ if (wsi->c_origin)
+ free(wsi->c_origin);
+ if (wsi->c_protocol)
+ free(wsi->c_protocol);
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NOSTATUS);
+ return NULL;
+ }
+
+ lws_b64_encode_string(hash, 16, wsi->key_b64,
+ sizeof wsi->key_b64);
+
+ /*
+ * 00 example client handshake
+ *
+ * GET /socket.io/websocket HTTP/1.1
+ * Upgrade: WebSocket
+ * Connection: Upgrade
+ * Host: 127.0.0.1:9999
+ * Origin: http://127.0.0.1
+ * Sec-WebSocket-Key1: 1 0 2#0W 9 89 7 92 ^
+ * Sec-WebSocket-Key2: 7 7Y 4328 B2v[8(z1
+ * Cookie: socketio=websocket
+ *
+ * (Á®Ä0¶†≥
+ *
+ * 04 example client handshake
+ *
+ * GET /chat HTTP/1.1
+ * Host: server.example.com
+ * Upgrade: websocket
+ * Connection: Upgrade
+ * Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
+ * Sec-WebSocket-Origin: http://example.com
+ * Sec-WebSocket-Protocol: chat, superchat
+ * Sec-WebSocket-Version: 4
+ */
+
+ p += sprintf(p, "GET %s HTTP/1.1\x0d\x0a", wsi->c_path);
+
+ if (wsi->ietf_spec_revision == 0) {
+ unsigned char spaces_1, spaces_2;
+ unsigned int max_1, max_2;
+ unsigned int num_1, num_2;
+ unsigned long product_1, product_2;
+ char key_1[40];
+ char key_2[40];
+ unsigned int seed;
+ unsigned int count;
+ char challenge[16];
+
+ libwebsockets_get_random(context, &spaces_1, sizeof(char));
+ libwebsockets_get_random(context, &spaces_2, sizeof(char));
+
+ spaces_1 = (spaces_1 % 12) + 1;
+ spaces_2 = (spaces_2 % 12) + 1;
+
+ max_1 = 4294967295 / spaces_1;
+ max_2 = 4294967295 / spaces_2;
+
+ libwebsockets_get_random(context, &num_1, sizeof(int));
+ libwebsockets_get_random(context, &num_2, sizeof(int));
+
+ num_1 = (num_1 % max_1);
+ num_2 = (num_2 % max_2);
+
+ challenge[0] = num_1 >> 24;
+ challenge[1] = num_1 >> 16;
+ challenge[2] = num_1 >> 8;
+ challenge[3] = num_1;
+ challenge[4] = num_2 >> 24;
+ challenge[5] = num_2 >> 16;
+ challenge[6] = num_2 >> 8;
+ challenge[7] = num_2;
+
+ product_1 = num_1 * spaces_1;
+ product_2 = num_2 * spaces_2;
+
+ sprintf(key_1, "%lu", product_1);
+ sprintf(key_2, "%lu", product_2);
+
+ libwebsockets_get_random(context, &seed, sizeof(int));
+ libwebsockets_get_random(context, &count, sizeof(int));
+
+ libwebsockets_00_spam(key_1, (count % 12) + 1, seed);
+
+ libwebsockets_get_random(context, &seed, sizeof(int));
+ libwebsockets_get_random(context, &count, sizeof(int));
+
+ libwebsockets_00_spam(key_2, (count % 12) + 1, seed);
+
+ libwebsockets_get_random(context, &seed, sizeof(int));
+
+ libwebsockets_00_spaceout(key_1, spaces_1, seed);
+ libwebsockets_00_spaceout(key_2, spaces_2, seed >> 16);
+
+ p += sprintf(p, "Upgrade: WebSocket\x0d\x0a"
+ "Connection: Upgrade\x0d\x0aHost: %s\x0d\x0a",
+ wsi->c_host);
+ if (wsi->c_origin)
+ p += sprintf(p, "Origin: %s\x0d\x0a", wsi->c_origin);
+
+ if (wsi->c_protocol)
+ p += sprintf(p, "Sec-WebSocket-Protocol: %s"
+ "\x0d\x0a", wsi->c_protocol);
+
+ p += sprintf(p, "Sec-WebSocket-Key1: %s\x0d\x0a", key_1);
+ p += sprintf(p, "Sec-WebSocket-Key2: %s\x0d\x0a", key_2);
+
+ /* give userland a chance to append, eg, cookies */
+
+ context->protocols[0].callback(context, wsi,
+ LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER,
+ NULL, &p, (pkt + sizeof(pkt)) - p - 12);
+
+ p += sprintf(p, "\x0d\x0a");
+
+ if (libwebsockets_get_random(context, p, 8) != 8)
+ return NULL;
+ memcpy(&challenge[8], p, 8);
+ p += 8;
+
+ /* precompute what we want to see from the server */
+
+ MD5((unsigned char *)challenge, 16,
+ (unsigned char *)wsi->initial_handshake_hash_base64);
+
+ goto issue_hdr;
+ }
+
+ p += sprintf(p, "Host: %s\x0d\x0a", wsi->c_host);
+ p += sprintf(p, "Upgrade: websocket\x0d\x0a");
+ p += sprintf(p, "Connection: Upgrade\x0d\x0a"
+ "Sec-WebSocket-Key: ");
+ strcpy(p, wsi->key_b64);
+ p += strlen(wsi->key_b64);
+ p += sprintf(p, "\x0d\x0a");
+ if (wsi->c_origin)
+ p += sprintf(p, "Sec-WebSocket-Origin: %s\x0d\x0a",
+ wsi->c_origin);
+ if (wsi->c_protocol)
+ p += sprintf(p, "Sec-WebSocket-Protocol: %s\x0d\x0a",
+ wsi->c_protocol);
+
+ /* tell the server what extensions we could support */
+
+ p += sprintf(p, "Sec-WebSocket-Extensions: ");
+
+ ext = context->extensions;
+ while (ext && ext->callback) {
+
+ n = 0;
+ ext1 = context->extensions;
+
+ while (ext1 && ext1->callback) {
+ n |= ext1->callback(context, ext1, wsi,
+ LWS_EXT_CALLBACK_CHECK_OK_TO_PROPOSE_EXTENSION,
+ NULL, (char *)ext->name, 0);
+
+ ext1++;
+ }
+
+ if (n) { /* an extension vetos us */
+ debug("ext %s vetoed\n", (char *)ext->name);
+ ext++;
+ continue;
+ }
+
+ n = context->protocols[0].callback(context, wsi,
+ LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED,
+ wsi->user_space, (char *)ext->name, 0);
+
+ /*
+ * zero return from callback means
+ * go ahead and allow the extension,
+ * it's what we get if the callback is
+ * unhandled
+ */
+
+ if (n) {
+ ext++;
+ continue;
+ }
+
+ /* apply it */
+
+ if (ext_count)
+ *p++ = ',';
+ p += sprintf(p, "%s", ext->name);
+ ext_count++;
+
+ ext++;
+ }
+
+ p += sprintf(p, "\x0d\x0a");
+
+ if (wsi->ietf_spec_revision)
+ p += sprintf(p, "Sec-WebSocket-Version: %d\x0d\x0a",
+ wsi->ietf_spec_revision);
+
+ /* give userland a chance to append, eg, cookies */
+
+ context->protocols[0].callback(context, wsi,
+ LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER,
+ NULL, &p, (pkt + sizeof(pkt)) - p - 12);
+
+ p += sprintf(p, "\x0d\x0a");
+
+ /* prepare the expected server accept response */
+
+ strcpy((char *)buf, wsi->key_b64);
+ strcpy((char *)&buf[strlen((char *)buf)], magic_websocket_guid);
+
+ SHA1(buf, strlen((char *)buf), (unsigned char *)hash);
+
+ lws_b64_encode_string(hash, 20,
+ wsi->initial_handshake_hash_base64,
+ sizeof wsi->initial_handshake_hash_base64);
+
+issue_hdr:
+
+#if 0
+ puts(pkt);
+#endif
+
+ /* done with these now */
+
+ free(wsi->c_path);
+ free(wsi->c_host);
+ if (wsi->c_origin)
+ free(wsi->c_origin);
+
+ return p;
+}
+
+int
+lws_client_interpret_server_handshake(struct libwebsocket_context *context,
+ struct libwebsocket *wsi)
+{
+ unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 1 +
+ MAX_BROADCAST_PAYLOAD + LWS_SEND_BUFFER_POST_PADDING];
+ char pkt[1024];
+ char *p = &pkt[0];
+ const char *pc;
+ const char *c;
+ int more = 1;
+ int okay = 0;
+ char ext_name[128];
+ struct libwebsocket_extension *ext;
+ void *v;
+ int len = 0;
+ int n;
+ static const char magic_websocket_04_masking_guid[] =
+ "61AC5F19-FBBA-4540-B96F-6561F1AB40A8";
+
+ /*
+ * 00 / 76 -->
+ *
+ * HTTP/1.1 101 WebSocket Protocol Handshake
+ * Upgrade: WebSocket
+ * Connection: Upgrade
+ * Sec-WebSocket-Origin: http://127.0.0.1
+ * Sec-WebSocket-Location: ws://127.0.0.1:9999/socket.io/websocket
+ *
+ * xxxxxxxxxxxxxxxx
+ */
+
+ if (wsi->ietf_spec_revision == 0) {
+ if (!wsi->utf8_token[WSI_TOKEN_HTTP].token_len ||
+ !wsi->utf8_token[WSI_TOKEN_UPGRADE].token_len ||
+ !wsi->utf8_token[WSI_TOKEN_CHALLENGE].token_len ||
+ !wsi->utf8_token[WSI_TOKEN_CONNECTION].token_len ||
+ (!wsi->utf8_token[WSI_TOKEN_PROTOCOL].token_len &&
+ wsi->c_protocol != NULL)) {
+ debug("libwebsocket_client_handshake "
+ "missing required header(s)\n");
+ pkt[len] = '\0';
+ debug("%s", pkt);
+ goto bail3;
+ }
+
+ strtolower(wsi->utf8_token[WSI_TOKEN_HTTP].token);
+ if (strncmp(wsi->utf8_token[WSI_TOKEN_HTTP].token, "101", 3)) {
+ fprintf(stderr, "libwebsocket_client_handshake "
+ "server sent bad HTTP response '%s'\n",
+ wsi->utf8_token[WSI_TOKEN_HTTP].token);
+ goto bail3;
+ }
+
+ if (wsi->utf8_token[WSI_TOKEN_CHALLENGE].token_len < 16) {
+ fprintf(stderr, "libwebsocket_client_handshake "
+ "challenge reply too short %d\n",
+ wsi->utf8_token[
+ WSI_TOKEN_CHALLENGE].token_len);
+ pkt[len] = '\0';
+ debug("%s", pkt);
+ goto bail3;
+
+ }
+
+ goto select_protocol;
+ }
+
+ /*
+ * well, what the server sent looked reasonable for syntax.
+ * Now let's confirm it sent all the necessary headers
+ */
+#if 0
+ fprintf(stderr, "WSI_TOKEN_HTTP: %d\n",
+ wsi->utf8_token[WSI_TOKEN_HTTP].token_len);
+ fprintf(stderr, "WSI_TOKEN_UPGRADE: %d\n",
+ wsi->utf8_token[WSI_TOKEN_UPGRADE].token_len);
+ fprintf(stderr, "WSI_TOKEN_CONNECTION: %d\n",
+ wsi->utf8_token[WSI_TOKEN_CONNECTION].token_len);
+ fprintf(stderr, "WSI_TOKEN_ACCEPT: %d\n",
+ wsi->utf8_token[WSI_TOKEN_ACCEPT].token_len);
+ fprintf(stderr, "WSI_TOKEN_NONCE: %d\n",
+ wsi->utf8_token[WSI_TOKEN_NONCE].token_len);
+ fprintf(stderr, "WSI_TOKEN_PROTOCOL: %d\n",
+ wsi->utf8_token[WSI_TOKEN_PROTOCOL].token_len);
+#endif
+ if (!wsi->utf8_token[WSI_TOKEN_HTTP].token_len ||
+ !wsi->utf8_token[WSI_TOKEN_UPGRADE].token_len ||
+ !wsi->utf8_token[WSI_TOKEN_CONNECTION].token_len ||
+ !wsi->utf8_token[WSI_TOKEN_ACCEPT].token_len ||
+ (!wsi->utf8_token[WSI_TOKEN_NONCE].token_len &&
+ wsi->ietf_spec_revision == 4) ||
+ (!wsi->utf8_token[WSI_TOKEN_PROTOCOL].token_len &&
+ wsi->c_protocol != NULL)) {
+ debug("libwebsocket_client_handshake "
+ "missing required header(s)\n");
+ pkt[len] = '\0';
+ debug("%s", pkt);
+ goto bail3;
+ }
+
+ /*
+ * Everything seems to be there, now take a closer look at what
+ * is in each header
+ */
+
+ strtolower(wsi->utf8_token[WSI_TOKEN_HTTP].token);
+ if (strncmp(wsi->utf8_token[WSI_TOKEN_HTTP].token, "101", 3)) {
+ fprintf(stderr, "libwebsocket_client_handshake "
+ "server sent bad HTTP response '%s'\n",
+ wsi->utf8_token[WSI_TOKEN_HTTP].token);
+ goto bail3;
+ }
+
+ strtolower(wsi->utf8_token[WSI_TOKEN_UPGRADE].token);
+ if (strcmp(wsi->utf8_token[WSI_TOKEN_UPGRADE].token,
+ "websocket")) {
+ fprintf(stderr, "libwebsocket_client_handshake server "
+ "sent bad Upgrade header '%s'\n",
+ wsi->utf8_token[WSI_TOKEN_UPGRADE].token);
+ goto bail3;
+ }
+
+ strtolower(wsi->utf8_token[WSI_TOKEN_CONNECTION].token);
+ if (strcmp(wsi->utf8_token[WSI_TOKEN_CONNECTION].token,
+ "upgrade")) {
+ fprintf(stderr, "libwebsocket_client_handshake server "
+ "sent bad Connection hdr '%s'\n",
+ wsi->utf8_token[WSI_TOKEN_CONNECTION].token);
+ goto bail3;
+ }
+
+select_protocol:
+ pc = wsi->c_protocol;
+ if (pc == NULL)
+ fprintf(stderr, "lws_client_interpret_server_handshake: "
+ "NULL c_protocol\n");
+ else
+ debug("lws_client_interpret_server_handshake: "
+ "cPprotocol='%s'\n", pc);
+
+ /*
+ * confirm the protocol the server wants to talk was in the list
+ * of protocols we offered
+ */
+
+ if (!wsi->utf8_token[WSI_TOKEN_PROTOCOL].token_len) {
+
+ fprintf(stderr, "lws_client_interpret_server_handshake "
+ "WSI_TOKEN_PROTOCOL is null\n");
+ /*
+ * no protocol name to work from,
+ * default to first protocol
+ */
+ wsi->protocol = &context->protocols[0];
+ wsi->c_callback = wsi->protocol->callback;
+ free(wsi->c_protocol);
+
+ goto check_accept;
+ }
+
+ while (*pc && !okay) {
+ if ((!strncmp(pc, wsi->utf8_token[WSI_TOKEN_PROTOCOL].token,
+ wsi->utf8_token[WSI_TOKEN_PROTOCOL].token_len)) &&
+ (pc[wsi->utf8_token[WSI_TOKEN_PROTOCOL].token_len] == ',' ||
+ pc[wsi->utf8_token[WSI_TOKEN_PROTOCOL].token_len] == '\0')) {
+ okay = 1;
+ continue;
+ }
+ while (*pc && *pc != ',')
+ pc++;
+ while (*pc && *pc != ' ')
+ pc++;
+ }
+
+ /* done with him now */
+
+ if (wsi->c_protocol)
+ free(wsi->c_protocol);
+
+ if (!okay) {
+ fprintf(stderr, "libwebsocket_client_handshake server "
+ "sent bad protocol '%s'\n",
+ wsi->utf8_token[WSI_TOKEN_PROTOCOL].token);
+ goto bail2;
+ }
+
+ /*
+ * identify the selected protocol struct and set it
+ */
+ n = 0;
+ wsi->protocol = NULL;
+ while (context->protocols[n].callback && !wsi->protocol) { /* Stop after finding first one?? */
+ if (strcmp(wsi->utf8_token[WSI_TOKEN_PROTOCOL].token,
+ context->protocols[n].name) == 0) {
+ wsi->protocol = &context->protocols[n];
+ wsi->c_callback = wsi->protocol->callback;
+ }
+ n++;
+ }
+
+ if (wsi->protocol == NULL) {
+ fprintf(stderr, "libwebsocket_client_handshake server "
+ "requested protocol '%s', which we "
+ "said we supported but we don't!\n",
+ wsi->utf8_token[WSI_TOKEN_PROTOCOL].token);
+ goto bail2;
+ }
+
+
+ /* instantiate the accepted extensions */
+
+ if (!wsi->utf8_token[WSI_TOKEN_EXTENSIONS].token_len) {
+ debug("no client extenstions allowed by server\n");
+ goto check_accept;
+ }
+
+ /*
+ * break down the list of server accepted extensions
+ * and go through matching them or identifying bogons
+ */
+
+ c = wsi->utf8_token[WSI_TOKEN_EXTENSIONS].token;
+ n = 0;
+ while (more) {
+
+ if (*c && (*c != ',' && *c != ' ' && *c != '\t')) {
+ ext_name[n] = *c++;
+ if (n < sizeof(ext_name) - 1)
+ n++;
+ continue;
+ }
+ ext_name[n] = '\0';
+ if (!*c)
+ more = 0;
+ else {
+ c++;
+ if (!n)
+ continue;
+ }
+
+ /* check we actually support it */
+
+ debug("checking client ext %s\n", ext_name);
+
+ n = 0;
+ ext = wsi->protocol->owning_server->extensions;
+ while (ext && ext->callback) {
+
+ if (strcmp(ext_name, ext->name)) {
+ ext++;
+ continue;
+ }
+
+ n = 1;
+
+ debug("instantiating client ext %s\n", ext_name);
+
+ /* instantiate the extension on this conn */
+
+ wsi->active_extensions_user[
+ wsi->count_active_extensions] =
+ malloc(ext->per_session_data_size);
+ memset(wsi->active_extensions_user[
+ wsi->count_active_extensions], 0,
+ ext->per_session_data_size);
+ wsi->active_extensions[
+ wsi->count_active_extensions] = ext;
+
+ /* allow him to construct his context */
+
+ ext->callback(wsi->protocol->owning_server,
+ ext, wsi,
+ LWS_EXT_CALLBACK_CLIENT_CONSTRUCT,
+ wsi->active_extensions_user[
+ wsi->count_active_extensions],
+ NULL, 0);
+
+ wsi->count_active_extensions++;
+
+ ext++;
+ }
+
+ if (n == 0) {
+ fprintf(stderr, "Server said we should use"
+ "an unknown extension '%s'!\n", ext_name);
+ goto bail2;
+ }
+
+ n = 0;
+ }
+
+
+check_accept:
+
+ if (wsi->ietf_spec_revision == 0) {
+
+ if (memcmp(wsi->initial_handshake_hash_base64,
+ wsi->utf8_token[WSI_TOKEN_CHALLENGE].token, 16)) {
+ fprintf(stderr, "libwebsocket_client_handshake "
+ "failed 00 challenge compare\n");
+ pkt[len] = '\0';
+ fprintf(stderr, "%s", pkt);
+ goto bail2;
+ }
+
+ goto accept_ok;
+ }
+
+ /*
+ * Confirm his accept token is the one we precomputed
+ */
+
+ if (strcmp(wsi->utf8_token[WSI_TOKEN_ACCEPT].token,
+ wsi->initial_handshake_hash_base64)) {
+ fprintf(stderr, "libwebsocket_client_handshake server "
+ "sent bad ACCEPT '%s' vs computed '%s'\n",
+ wsi->utf8_token[WSI_TOKEN_ACCEPT].token,
+ wsi->initial_handshake_hash_base64);
+ goto bail2;
+ }
+
+ if (wsi->ietf_spec_revision == 4) {
+ /*
+ * Calculate the 04 masking key to use when
+ * sending data to server
+ */
+
+ strcpy((char *)buf, wsi->key_b64);
+ p = (char *)buf + strlen(wsi->key_b64);
+ strcpy(p, wsi->utf8_token[WSI_TOKEN_NONCE].token);
+ p += wsi->utf8_token[WSI_TOKEN_NONCE].token_len;
+ strcpy(p, magic_websocket_04_masking_guid);
+ SHA1(buf, strlen((char *)buf), wsi->masking_key_04);
+ }
+accept_ok:
+
+ /* allocate the per-connection user memory (if any) */
+ if (wsi->protocol->per_session_data_size &&
+ !libwebsocket_ensure_user_space(wsi))
+ goto bail2;
+
+ /* clear his proxy connection timeout */
+
+ libwebsocket_set_timeout(wsi, NO_PENDING_TIMEOUT, 0);
+
+ /* mark him as being alive */
+
+ wsi->state = WSI_STATE_ESTABLISHED;
+ wsi->mode = LWS_CONNMODE_WS_CLIENT;
+
+ debug("handshake OK for protocol %s\n", wsi->protocol->name);
+
+ /* call him back to inform him he is up */
+
+ wsi->protocol->callback(context, wsi,
+ LWS_CALLBACK_CLIENT_ESTABLISHED,
+ wsi->user_space, NULL, 0);
+
+ /*
+ * inform all extensions, not just active ones since they
+ * already know
+ */
+
+ ext = context->extensions;
+
+ while (ext && ext->callback) {
+ v = NULL;
+ for (n = 0; n < wsi->count_active_extensions; n++)
+ if (wsi->active_extensions[n] == ext)
+ v = wsi->active_extensions_user[n];
+
+ ext->callback(context, ext, wsi,
+ LWS_EXT_CALLBACK_ANY_WSI_ESTABLISHED, v, NULL, 0);
+ ext++;
+ }
+
+ return 0;
+
+bail3:
+ if (wsi->c_protocol)
+ free(wsi->c_protocol);
+
+bail2:
+ if (wsi->c_callback) wsi->c_callback(context, wsi,
+ LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
+ wsi->user_space,
+ NULL, 0);
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NOSTATUS); // But this should be LWS_CLOSE_STATUS_PROTOCOL_ERR
+
+ return 1;
+}
+
+
+
+/**
+ * libwebsocket_service_fd() - Service polled socket with something waiting
+ * @context: Websocket context
+ * @pollfd: The pollfd entry describing the socket fd and which events
+ * happened.
+ *
+ * This function closes any active connections and then frees the
+ * context. After calling this, any further use of the context is
+ * undefined.
+ */
+
+int
+libwebsocket_service_fd(struct libwebsocket_context *context,
+ struct pollfd *pollfd)
+{
+ unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 1 +
+ MAX_BROADCAST_PAYLOAD + LWS_SEND_BUFFER_POST_PADDING];
+ struct libwebsocket *wsi;
+ struct libwebsocket *new_wsi;
+ int n;
+ int m;
+ ssize_t len;
+ int accept_fd;
+ unsigned int clilen;
+ struct sockaddr_in cli_addr;
+ struct timeval tv;
+ char pkt[1024];
+ char *p = &pkt[0];
+ int more = 1;
+ struct lws_tokens eff_buf;
+ int opt = 1;
+ char c;
+
+#ifdef LWS_OPENSSL_SUPPORT
+ char ssl_err_buf[512];
+#endif
+ /*
+ * you can call us with pollfd = NULL to just allow the once-per-second
+ * global timeout checks; if less than a second since the last check
+ * it returns immediately then.
+ */
+
+ gettimeofday(&tv, NULL);
+
+ if (context->last_timeout_check_s != tv.tv_sec) {
+ context->last_timeout_check_s = tv.tv_sec;
+
+ /* global timeout check once per second */
+
+ for (n = 0; n < context->fds_count; n++) {
+ wsi = wsi_from_fd(context, context->fds[n].fd);
+
+ libwebsocket_service_timeout_check(context, wsi,
+ tv.tv_sec);
+ }
+ }
+
+ /* just here for timeout management? */
+
+ if (pollfd == NULL)
+ return 0;
+
+ /* no, here to service a socket descriptor */
+
+ wsi = wsi_from_fd(context, pollfd->fd);
+
+ if (wsi == NULL)
+ return 1;
+
+ switch (wsi->mode) {
+ case LWS_CONNMODE_SERVER_LISTENER:
+
+ /* pollin means a client has connected to us then */
+
+ if (!pollfd->revents & POLLIN)
+ break;
+
+ if (context->fds_count >= MAX_CLIENTS) {
+ fprintf(stderr, "too busy to accept new client\n");
+ break;
+ }
+
+ /* listen socket got an unencrypted connection... */
+
+ clilen = sizeof(cli_addr);
+ accept_fd = accept(pollfd->fd, (struct sockaddr *)&cli_addr,
+ &clilen);
+ if (accept_fd < 0) {
+ debug("ERROR on accept\n");
+ return -1;
+ }
+
+ /* Disable Nagle */
+ opt = 1;
+ setsockopt(accept_fd, IPPROTO_TCP, TCP_NODELAY,
+ (const void *)&opt, sizeof(opt));
+
+ /*
+ * look at who we connected to and give user code a chance
+ * to reject based on client IP. There's no protocol selected
+ * yet so we issue this to protocols[0]
+ */
+
+ if ((context->protocols[0].callback)(context, wsi,
+ LWS_CALLBACK_FILTER_NETWORK_CONNECTION,
+ (void *)(long)accept_fd, NULL, 0)) {
+ debug("Callback denied network connection\n");
+#ifdef WIN32
+ closesocket(accept_fd);
+#else
+ close(accept_fd);
+#endif
+ break;
+ }
+
+ /* accepting connection to main listener */
+
+ new_wsi = libwebsocket_create_new_server_wsi(context);
+ if (new_wsi == NULL)
+ break;
+
+ new_wsi->sock = accept_fd;
+
+
+#ifdef LWS_OPENSSL_SUPPORT
+ new_wsi->ssl = NULL;
+
+ if (context->use_ssl) {
+
+ new_wsi->ssl = SSL_new(context->ssl_ctx);
+ if (new_wsi->ssl == NULL) {
+ fprintf(stderr, "SSL_new failed: %s\n",
+ ERR_error_string(SSL_get_error(
+ new_wsi->ssl, 0), NULL));
+ libwebsockets_decode_ssl_error();
+ free(new_wsi);
+ break;
+ }
+
+ SSL_set_fd(new_wsi->ssl, accept_fd);
+
+ n = SSL_accept(new_wsi->ssl);
+ if (n != 1) {
+ /*
+ * browsers seem to probe with various
+ * ssl params which fail then retry
+ * and succeed
+ */
+ debug("SSL_accept failed skt %u: %s\n",
+ pollfd->fd,
+ ERR_error_string(SSL_get_error(
+ new_wsi->ssl, n), NULL));
+ SSL_free(
+ new_wsi->ssl);
+ free(new_wsi);
+ break;
+ }
+
+ debug("accepted new SSL conn "
+ "port %u on fd=%d SSL ver %s\n",
+ ntohs(cli_addr.sin_port), accept_fd,
+ SSL_get_version(new_wsi->ssl));
+
+ } else
+#endif
+ debug("accepted new conn port %u on fd=%d\n",
+ ntohs(cli_addr.sin_port), accept_fd);
+
+ insert_wsi(context, new_wsi);
+
+ /*
+ * make sure NO events are seen yet on this new socket
+ * (otherwise we inherit old fds[client].revents from
+ * previous socket there and die mysteriously! )
+ */
+ context->fds[context->fds_count].revents = 0;
+
+ context->fds[context->fds_count].events = POLLIN;
+ context->fds[context->fds_count++].fd = accept_fd;
+
+ /* external POLL support via protocol 0 */
+ context->protocols[0].callback(context, new_wsi,
+ LWS_CALLBACK_ADD_POLL_FD,
+ (void *)(long)accept_fd, NULL, POLLIN);
+
+ break;
+
+ case LWS_CONNMODE_BROADCAST_PROXY_LISTENER:
+
+ /* as we are listening, POLLIN means accept() is needed */
+
+ if (!pollfd->revents & POLLIN)
+ break;
+
+ /* listen socket got an unencrypted connection... */
+
+ clilen = sizeof(cli_addr);
+ accept_fd = accept(pollfd->fd, (struct sockaddr *)&cli_addr,
+ &clilen);
+ if (accept_fd < 0) {
+ debug("ERROR on accept\n");
+ return -1;
+ }
+
+ if (context->fds_count >= MAX_CLIENTS) {
+ fprintf(stderr, "too busy to accept new broadcast "
+ "proxy client\n");
+#ifdef WIN32
+ closesocket(accept_fd);
+#else
+ close(accept_fd);
+#endif
+ break;
+ }
+
+ /* create a dummy wsi for the connection and add it */
+
+ new_wsi = malloc(sizeof(struct libwebsocket));
+ memset(new_wsi, 0, sizeof(struct libwebsocket));
+ new_wsi->sock = accept_fd;
+ new_wsi->mode = LWS_CONNMODE_BROADCAST_PROXY;
+ new_wsi->state = WSI_STATE_ESTABLISHED;
+ new_wsi->count_active_extensions = 0;
+ /* note which protocol we are proxying */
+ new_wsi->protocol_index_for_broadcast_proxy =
+ wsi->protocol_index_for_broadcast_proxy;
+ insert_wsi(context, new_wsi);
+
+ /* add connected socket to internal poll array */
+
+ context->fds[context->fds_count].revents = 0;
+ context->fds[context->fds_count].events = POLLIN;
+ context->fds[context->fds_count++].fd = accept_fd;
+
+ /* external POLL support via protocol 0 */
+ context->protocols[0].callback(context, new_wsi,
+ LWS_CALLBACK_ADD_POLL_FD,
+ (void *)(long)accept_fd, NULL, POLLIN);
+
+ break;
+
+ case LWS_CONNMODE_BROADCAST_PROXY:
+
+ /* handle session socket closed */
+
+ if (pollfd->revents & (POLLERR | POLLHUP)) {
+
+ debug("Session Socket %p (fd=%d) dead\n",
+ (void *)wsi, pollfd->fd);
+
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NORMAL);
+ return 1;
+ }
+
+ /*
+ * either extension code with stuff to spill, or the user code,
+ * requested a callback when it was OK to write
+ */
+
+ if (pollfd->revents & POLLOUT)
+ if (lws_handle_POLLOUT_event(context, wsi,
+ pollfd) < 0) {
+ libwebsocket_close_and_free_session(
+ context, wsi, LWS_CLOSE_STATUS_NORMAL);
+ return 1;
+ }
+
+ /* any incoming data ready? */
+
+ if (!(pollfd->revents & POLLIN))
+ break;
+
+ /* get the issued broadcast payload from the socket */
+
+ len = read(pollfd->fd, buf + LWS_SEND_BUFFER_PRE_PADDING,
+ MAX_BROADCAST_PAYLOAD);
+ if (len < 0) {
+ fprintf(stderr, "Error reading broadcast payload\n");
+ break;
+ }
+
+ /* broadcast it to all guys with this protocol index */
+
+ for (n = 0; n < FD_HASHTABLE_MODULUS; n++) {
+
+ for (m = 0; m < context->fd_hashtable[n].length; m++) {
+
+ new_wsi = context->fd_hashtable[n].wsi[m];
+
+ /* only to clients we are serving to */
+
+ if (new_wsi->mode != LWS_CONNMODE_WS_SERVING)
+ continue;
+
+ /*
+ * never broadcast to non-established
+ * connection
+ */
+
+ if (new_wsi->state != WSI_STATE_ESTABLISHED)
+ continue;
+
+ /*
+ * only broadcast to connections using
+ * the requested protocol
+ */
+
+ if (new_wsi->protocol->protocol_index !=
+ wsi->protocol_index_for_broadcast_proxy)
+ continue;
+
+ /* broadcast it to this connection */
+
+ new_wsi->protocol->callback(context, new_wsi,
+ LWS_CALLBACK_BROADCAST,
+ new_wsi->user_space,
+ buf + LWS_SEND_BUFFER_PRE_PADDING, len);
+ }
+ }
+ break;
+
+ case LWS_CONNMODE_WS_CLIENT_WAITING_PROXY_REPLY:
+
+ /* handle proxy hung up on us */
+
+ if (pollfd->revents & (POLLERR | POLLHUP)) {
+
+ fprintf(stderr, "Proxy connection %p (fd=%d) dead\n",
+ (void *)wsi, pollfd->fd);
+
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NOSTATUS);
+ return 1;
+ }
+
+ n = recv(wsi->sock, pkt, sizeof pkt, 0);
+ if (n < 0) {
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NOSTATUS);
+ fprintf(stderr, "ERROR reading from proxy socket\n");
+ return 1;
+ }
+
+ pkt[13] = '\0';
+ if (strcmp(pkt, "HTTP/1.0 200 ") != 0) {
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NOSTATUS);
+ fprintf(stderr, "ERROR from proxy: %s\n", pkt);
+ return 1;
+ }
+
+ /* clear his proxy connection timeout */
+
+ libwebsocket_set_timeout(wsi, NO_PENDING_TIMEOUT, 0);
+
+ /* fallthru */
+
+ case LWS_CONNMODE_WS_CLIENT_ISSUE_HANDSHAKE:
+
+ #ifdef LWS_OPENSSL_SUPPORT
+ if (wsi->use_ssl && !wsi->ssl) {
+
+ wsi->ssl = SSL_new(context->ssl_client_ctx);
+ wsi->client_bio = BIO_new_socket(wsi->sock,
+ BIO_NOCLOSE);
+ SSL_set_bio(wsi->ssl, wsi->client_bio, wsi->client_bio);
+
+ SSL_set_ex_data(wsi->ssl,
+ openssl_websocket_private_data_index,
+ context);
+ }
+
+ if (wsi->use_ssl) {
+ if (SSL_connect(wsi->ssl) <= 0) {
+
+ /*
+ * retry if new data comes until we
+ * run into the connection timeout or win
+ */
+
+ fprintf(stderr, "SSL connect error %s\n",
+ ERR_error_string(ERR_get_error(),
+ ssl_err_buf));
+ return 0;
+ }
+
+ n = SSL_get_verify_result(wsi->ssl);
+ if ((n != X509_V_OK) && (
+ n != X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT ||
+ wsi->use_ssl != 2)) {
+
+ fprintf(stderr, "server's cert didn't "
+ "look good %d\n", n);
+ libwebsocket_close_and_free_session(context,
+ wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ return 1;
+ }
+ } else
+ wsi->ssl = NULL;
+ #endif
+
+ p = libwebsockets_generate_client_handshake(context, wsi, p);
+ if (p == NULL)
+ return 1;
+
+ /* send our request to the server */
+
+ #ifdef LWS_OPENSSL_SUPPORT
+ if (wsi->use_ssl)
+ n = SSL_write(wsi->ssl, pkt, p - pkt);
+ else
+ #endif
+ n = send(wsi->sock, pkt, p - pkt, 0);
+
+ if (n < 0) {
+ fprintf(stderr, "ERROR writing to client socket\n");
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NOSTATUS);
+ return 1;
+ }
+
+ wsi->parser_state = WSI_TOKEN_NAME_PART;
+ wsi->mode = LWS_CONNMODE_WS_CLIENT_WAITING_SERVER_REPLY;
+ libwebsocket_set_timeout(wsi,
+ PENDING_TIMEOUT_AWAITING_SERVER_RESPONSE, 5);
+
+ break;
+
+ case LWS_CONNMODE_WS_CLIENT_WAITING_SERVER_REPLY:
+
+ /* handle server hung up on us */
+
+ if (pollfd->revents & (POLLERR | POLLHUP)) {
+
+ fprintf(stderr, "Server connection %p (fd=%d) dead\n",
+ (void *)wsi, pollfd->fd);
+
+ goto bail3;
+ }
+
+
+ /* interpret the server response */
+
+ /*
+ * HTTP/1.1 101 Switching Protocols
+ * Upgrade: websocket
+ * Connection: Upgrade
+ * Sec-WebSocket-Accept: me89jWimTRKTWwrS3aRrL53YZSo=
+ * Sec-WebSocket-Nonce: AQIDBAUGBwgJCgsMDQ4PEC==
+ * Sec-WebSocket-Protocol: chat
+ */
+
+ /*
+ * we have to take some care here to only take from the
+ * socket bytewise. The browser may (and has been seen to
+ * in the case that onopen() performs websocket traffic)
+ * coalesce both handshake response and websocket traffic
+ * in one packet, since at that point the connection is
+ * definitively ready from browser pov.
+ */
+
+ len = 1;
+ while (wsi->parser_state != WSI_PARSING_COMPLETE && len > 0) {
+#ifdef LWS_OPENSSL_SUPPORT
+ if (wsi->use_ssl)
+ len = SSL_read(wsi->ssl, &c, 1);
+ else
+#endif
+ len = recv(wsi->sock, &c, 1, 0);
+
+ libwebsocket_parse(wsi, c);
+ }
+
+ /*
+ * hs may also be coming in multiple packets, there is a 5-sec
+ * libwebsocket timeout still active here too, so if parsing did
+ * not complete just wait for next packet coming in this state
+ */
+
+ if (wsi->parser_state != WSI_PARSING_COMPLETE)
+ break;
+
+ /*
+ * otherwise deal with the handshake. If there's any
+ * packet traffic already arrived we'll trigger poll() again
+ * right away and deal with it that way
+ */
+
+ return lws_client_interpret_server_handshake(context, wsi);
+
+bail3:
+ if (wsi->c_protocol)
+ free(wsi->c_protocol);
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NOSTATUS);
+ return 1;
+
+ case LWS_CONNMODE_WS_CLIENT_WAITING_EXTENSION_CONNECT:
+ fprintf(stderr,
+ "LWS_CONNMODE_WS_CLIENT_WAITING_EXTENSION_CONNECT\n");
+ break;
+
+ case LWS_CONNMODE_WS_CLIENT_PENDING_CANDIDATE_CHILD:
+ fprintf(stderr,
+ "LWS_CONNMODE_WS_CLIENT_PENDING_CANDIDATE_CHILD\n");
+ break;
+
+
+ case LWS_CONNMODE_WS_SERVING:
+ case LWS_CONNMODE_WS_CLIENT:
+
+ /* handle session socket closed */
+
+ if (pollfd->revents & (POLLERR | POLLHUP)) {
+
+ fprintf(stderr, "Session Socket %p (fd=%d) dead\n",
+ (void *)wsi, pollfd->fd);
+
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NOSTATUS);
+ return 1;
+ }
+
+ /* the guy requested a callback when it was OK to write */
+
+ if ((pollfd->revents & POLLOUT) &&
+ wsi->state == WSI_STATE_ESTABLISHED)
+ if (lws_handle_POLLOUT_event(context, wsi,
+ pollfd) < 0) {
+ libwebsocket_close_and_free_session(
+ context, wsi, LWS_CLOSE_STATUS_NORMAL);
+ return 1;
+ }
+
+
+ /* any incoming data ready? */
+
+ if (!(pollfd->revents & POLLIN))
+ break;
+
+#ifdef LWS_OPENSSL_SUPPORT
+ if (wsi->ssl)
+ eff_buf.token_len = SSL_read(wsi->ssl, buf, sizeof buf);
+ else
+#endif
+ eff_buf.token_len =
+ recv(pollfd->fd, buf, sizeof buf, 0);
+
+ if (eff_buf.token_len < 0) {
+ fprintf(stderr, "Socket read returned %d\n",
+ eff_buf.token_len);
+ if (errno != EINTR)
+ libwebsocket_close_and_free_session(context,
+ wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ return 1;
+ }
+ if (!eff_buf.token_len) {
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NOSTATUS);
+ return 1;
+ }
+
+ /*
+ * give any active extensions a chance to munge the buffer
+ * before parse. We pass in a pointer to an lws_tokens struct
+ * prepared with the default buffer and content length that's in
+ * there. Rather than rewrite the default buffer, extensions
+ * that expect to grow the buffer can adapt .token to
+ * point to their own per-connection buffer in the extension
+ * user allocation. By default with no extensions or no
+ * extension callback handling, just the normal input buffer is
+ * used then so it is efficient.
+ */
+
+ eff_buf.token = (char *)buf;
+
+ more = 1;
+ while (more) {
+
+ more = 0;
+
+ for (n = 0; n < wsi->count_active_extensions; n++) {
+ m = wsi->active_extensions[n]->callback(context,
+ wsi->active_extensions[n], wsi,
+ LWS_EXT_CALLBACK_PACKET_RX_PREPARSE,
+ wsi->active_extensions_user[n],
+ &eff_buf, 0);
+ if (m < 0) {
+ fprintf(stderr,
+ "Extension reports fatal error\n");
+ libwebsocket_close_and_free_session(
+ context, wsi,
+ LWS_CLOSE_STATUS_NOSTATUS);
+ return 1;
+ }
+ if (m)
+ more = 1;
+ }
+
+ /* service incoming data */
+
+ if (eff_buf.token_len) {
+ n = libwebsocket_read(context, wsi,
+ (unsigned char *)eff_buf.token,
+ eff_buf.token_len);
+ if (n < 0)
+ /* we closed wsi */
+ return 1;
+ }
+
+ eff_buf.token = NULL;
+ eff_buf.token_len = 0;
+ }
+ break;
+ }
+
+ return 0;
+}
+
+
+/**
+ * libwebsocket_context_destroy() - Destroy the websocket context
+ * @context: Websocket context
+ *
+ * This function closes any active connections and then frees the
+ * context. After calling this, any further use of the context is
+ * undefined.
+ */
+void
+libwebsocket_context_destroy(struct libwebsocket_context *context)
+{
+ int n;
+ int m;
+ struct libwebsocket *wsi;
+ struct libwebsocket_extension *ext;
+
+ for (n = 0; n < FD_HASHTABLE_MODULUS; n++)
+ for (m = 0; m < context->fd_hashtable[n].length; m++) {
+ wsi = context->fd_hashtable[n].wsi[m];
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_GOINGAWAY);
+ }
+
+ /*
+ * give all extensions a chance to clean up any per-context
+ * allocations they might have made
+ */
+
+ ext = context->extensions;
+ m = LWS_EXT_CALLBACK_CLIENT_CONTEXT_DESTRUCT;
+ if (context->listen_port)
+ m = LWS_EXT_CALLBACK_SERVER_CONTEXT_DESTRUCT;
+ while (ext && ext->callback) {
+ ext->callback(context, ext, NULL, m, NULL, NULL, 0);
+ ext++;
+ }
+
+#ifdef WIN32
+#else
+ close(context->fd_random);
+#endif
+
+#ifdef LWS_OPENSSL_SUPPORT
+ if (context->ssl_ctx)
+ SSL_CTX_free(context->ssl_ctx);
+ if (context->ssl_client_ctx)
+ SSL_CTX_free(context->ssl_client_ctx);
+#endif
+
+ free(context);
+
+#ifdef WIN32
+ WSACleanup();
+#endif
+}
+
+/**
+ * libwebsocket_service() - Service any pending websocket activity
+ * @context: Websocket context
+ * @timeout_ms: Timeout for poll; 0 means return immediately if nothing needed
+ * service otherwise block and service immediately, returning
+ * after the timeout if nothing needed service.
+ *
+ * This function deals with any pending websocket traffic, for three
+ * kinds of event. It handles these events on both server and client
+ * types of connection the same.
+ *
+ * 1) Accept new connections to our context's server
+ *
+ * 2) Perform pending broadcast writes initiated from other forked
+ * processes (effectively serializing asynchronous broadcasts)
+ *
+ * 3) Call the receive callback for incoming frame data received by
+ * server or client connections.
+ *
+ * You need to call this service function periodically to all the above
+ * functions to happen; if your application is single-threaded you can
+ * just call it in your main event loop.
+ *
+ * Alternatively you can fork a new process that asynchronously handles
+ * calling this service in a loop. In that case you are happy if this
+ * call blocks your thread until it needs to take care of something and
+ * would call it with a large nonzero timeout. Your loop then takes no
+ * CPU while there is nothing happening.
+ *
+ * If you are calling it in a single-threaded app, you don't want it to
+ * wait around blocking other things in your loop from happening, so you
+ * would call it with a timeout_ms of 0, so it returns immediately if
+ * nothing is pending, or as soon as it services whatever was pending.
+ */
+
+
+int
+libwebsocket_service(struct libwebsocket_context *context, int timeout_ms)
+{
+ int n;
+
+ /* stay dead once we are dead */
+
+ if (context == NULL)
+ return 1;
+
+ /* wait for something to need service */
+
+ n = poll(context->fds, context->fds_count, timeout_ms);
+ if (n == 0) /* poll timeout */
+ return 0;
+
+ if (n < 0) {
+ /*
+ fprintf(stderr, "Listen Socket dead\n");
+ */
+ return -1;
+ }
+
+ /* handle accept on listening socket? */
+
+ for (n = 0; n < context->fds_count; n++)
+ if (context->fds[n].revents)
+ if (libwebsocket_service_fd(context,
+ &context->fds[n]) < 0)
+ return -1;
+ return 0;
+}
+
+int
+lws_any_extension_handled(struct libwebsocket_context *context,
+ struct libwebsocket *wsi,
+ enum libwebsocket_extension_callback_reasons r,
+ void *v, size_t len)
+{
+ int n;
+ int handled = 0;
+
+ /* maybe an extension will take care of it for us */
+
+ for (n = 0; n < wsi->count_active_extensions && !handled; n++) {
+ if (!wsi->active_extensions[n]->callback)
+ continue;
+
+ handled |= wsi->active_extensions[n]->callback(context,
+ wsi->active_extensions[n], wsi,
+ r, wsi->active_extensions_user[n], v, len);
+ }
+
+ return handled;
+}
+
+
+void *
+lws_get_extension_user_matching_ext(struct libwebsocket *wsi,
+ struct libwebsocket_extension *ext)
+{
+ int n = 0;
+
+ if (wsi == NULL)
+ return NULL;
+
+ while (n < wsi->count_active_extensions) {
+ if (wsi->active_extensions[n] != ext) {
+ n++;
+ continue;
+ }
+ return wsi->active_extensions_user[n];
+ }
+
+ return NULL;
+}
+
+/**
+ * libwebsocket_callback_on_writable() - Request a callback when this socket
+ * becomes able to be written to without
+ * blocking
+ *
+ * @context: libwebsockets context
+ * @wsi: Websocket connection instance to get callback for
+ */
+
+int
+libwebsocket_callback_on_writable(struct libwebsocket_context *context,
+ struct libwebsocket *wsi)
+{
+ int n;
+ int handled = 0;
+
+ /* maybe an extension will take care of it for us */
+
+ for (n = 0; n < wsi->count_active_extensions; n++) {
+ if (!wsi->active_extensions[n]->callback)
+ continue;
+
+ handled |= wsi->active_extensions[n]->callback(context,
+ wsi->active_extensions[n], wsi,
+ LWS_EXT_CALLBACK_REQUEST_ON_WRITEABLE,
+ wsi->active_extensions_user[n], NULL, 0);
+ }
+
+ if (handled)
+ return 1;
+
+ for (n = 0; n < context->fds_count; n++)
+ if (context->fds[n].fd == wsi->sock) {
+ context->fds[n].events |= POLLOUT;
+ n = context->fds_count + 1;
+ }
+
+ if (n == context->fds_count)
+ fprintf(stderr, "libwebsocket_callback_on_writable: "
+ "failed to find socket %d\n", wsi->sock);
+
+ /* external POLL support via protocol 0 */
+ context->protocols[0].callback(context, wsi,
+ LWS_CALLBACK_SET_MODE_POLL_FD,
+ (void *)(long)wsi->sock, NULL, POLLOUT);
+
+ return 1;
+}
+
+/**
+ * libwebsocket_callback_on_writable_all_protocol() - Request a callback for
+ * all connections using the given protocol when it
+ * becomes possible to write to each socket without
+ * blocking in turn.
+ *
+ * @protocol: Protocol whose connections will get callbacks
+ */
+
+int
+libwebsocket_callback_on_writable_all_protocol(
+ const struct libwebsocket_protocols *protocol)
+{
+ struct libwebsocket_context *context = protocol->owning_server;
+ int n;
+ int m;
+ struct libwebsocket *wsi;
+
+ for (n = 0; n < FD_HASHTABLE_MODULUS; n++) {
+
+ for (m = 0; m < context->fd_hashtable[n].length; m++) {
+
+ wsi = context->fd_hashtable[n].wsi[m];
+
+ if (wsi->protocol == protocol)
+ libwebsocket_callback_on_writable(context, wsi);
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * libwebsocket_set_timeout() - marks the wsi as subject to a timeout
+ *
+ * You will not need this unless you are doing something special
+ *
+ * @wsi: Websocket connection instance
+ * @reason: timeout reason
+ * @secs: how many seconds
+ */
+
+void
+libwebsocket_set_timeout(struct libwebsocket *wsi,
+ enum pending_timeout reason, int secs)
+{
+ struct timeval tv;
+
+ gettimeofday(&tv, NULL);
+
+ wsi->pending_timeout_limit = tv.tv_sec + secs;
+ wsi->pending_timeout = reason;
+}
+
+
+/**
+ * libwebsocket_get_socket_fd() - returns the socket file descriptor
+ *
+ * You will not need this unless you are doing something special
+ *
+ * @wsi: Websocket connection instance
+ */
+
+int
+libwebsocket_get_socket_fd(struct libwebsocket *wsi)
+{
+ return wsi->sock;
+}
+
+/**
+ * libwebsocket_rx_flow_control() - Enable and disable socket servicing for
+ * receieved packets.
+ *
+ * If the output side of a server process becomes choked, this allows flow
+ * control for the input side.
+ *
+ * @wsi: Websocket connection instance to get callback for
+ * @enable: 0 = disable read servicing for this connection, 1 = enable
+ */
+
+int
+libwebsocket_rx_flow_control(struct libwebsocket *wsi, int enable)
+{
+ struct libwebsocket_context *context = wsi->protocol->owning_server;
+ int n;
+
+ for (n = 0; n < context->fds_count; n++)
+ if (context->fds[n].fd == wsi->sock) {
+ if (enable)
+ context->fds[n].events |= POLLIN;
+ else
+ context->fds[n].events &= ~POLLIN;
+
+ return 0;
+ }
+
+ if (enable)
+ /* external POLL support via protocol 0 */
+ context->protocols[0].callback(context, wsi,
+ LWS_CALLBACK_SET_MODE_POLL_FD,
+ (void *)(long)wsi->sock, NULL, POLLIN);
+ else
+ /* external POLL support via protocol 0 */
+ context->protocols[0].callback(context, wsi,
+ LWS_CALLBACK_CLEAR_MODE_POLL_FD,
+ (void *)(long)wsi->sock, NULL, POLLIN);
+
+#if 0
+ fprintf(stderr, "libwebsocket_rx_flow_control "
+ "unable to find socket\n");
+#endif
+ return 1;
+}
+
+/**
+ * libwebsocket_canonical_hostname() - returns this host's hostname
+ *
+ * This is typically used by client code to fill in the host parameter
+ * when making a client connection. You can only call it after the context
+ * has been created.
+ *
+ * @context: Websocket context
+ */
+
+
+extern const char *
+libwebsocket_canonical_hostname(struct libwebsocket_context *context)
+{
+ return (const char *)context->canonical_hostname;
+}
+
+
+static void sigpipe_handler(int x)
+{
+}
+
+#ifdef LWS_OPENSSL_SUPPORT
+static int
+OpenSSL_verify_callback(int preverify_ok, X509_STORE_CTX *x509_ctx)
+{
+
+ SSL *ssl;
+ int n;
+ struct libwebsocket_context *context;
+
+ ssl = X509_STORE_CTX_get_ex_data(x509_ctx,
+ SSL_get_ex_data_X509_STORE_CTX_idx());
+
+ /*
+ * !!! nasty openssl requires the index to come as a library-scope
+ * static
+ */
+ context = SSL_get_ex_data(ssl, openssl_websocket_private_data_index);
+
+ n = context->protocols[0].callback(NULL, NULL,
+ LWS_CALLBACK_OPENSSL_PERFORM_CLIENT_CERT_VERIFICATION,
+ x509_ctx, ssl, preverify_ok);
+
+ /* convert return code from 0 = OK to 1 = OK */
+
+ if (!n)
+ n = 1;
+ else
+ n = 0;
+
+ return n;
+}
+#endif
+
+
+/**
+ * libwebsocket_create_context() - Create the websocket handler
+ * @port: Port to listen on... you can use 0 to suppress listening on
+ * any port, that's what you want if you are not running a
+ * websocket server at all but just using it as a client
+ * @interf: NULL to bind the listen socket to all interfaces, or the
+ * interface name, eg, "eth2"
+ * @protocols: Array of structures listing supported protocols and a protocol-
+ * specific callback for each one. The list is ended with an
+ * entry that has a NULL callback pointer.
+ * It's not const because we write the owning_server member
+ * @extensions: NULL or array of libwebsocket_extension structs listing the
+ * extensions this context supports
+ * @ssl_cert_filepath: If libwebsockets was compiled to use ssl, and you want
+ * to listen using SSL, set to the filepath to fetch the
+ * server cert from, otherwise NULL for unencrypted
+ * @ssl_private_key_filepath: filepath to private key if wanting SSL mode,
+ * else ignored
+ * @gid: group id to change to after setting listen socket, or -1.
+ * @uid: user id to change to after setting listen socket, or -1.
+ * @options: 0, or LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK
+ *
+ * This function creates the listening socket and takes care
+ * of all initialization in one step.
+ *
+ * After initialization, it returns a struct libwebsocket_context * that
+ * represents this server. After calling, user code needs to take care
+ * of calling libwebsocket_service() with the context pointer to get the
+ * server's sockets serviced. This can be done in the same process context
+ * or a forked process, or another thread,
+ *
+ * The protocol callback functions are called for a handful of events
+ * including http requests coming in, websocket connections becoming
+ * established, and data arriving; it's also called periodically to allow
+ * async transmission.
+ *
+ * HTTP requests are sent always to the FIRST protocol in @protocol, since
+ * at that time websocket protocol has not been negotiated. Other
+ * protocols after the first one never see any HTTP callack activity.
+ *
+ * The server created is a simple http server by default; part of the
+ * websocket standard is upgrading this http connection to a websocket one.
+ *
+ * This allows the same server to provide files like scripts and favicon /
+ * images or whatever over http and dynamic data over websockets all in
+ * one place; they're all handled in the user callback.
+ */
+
+struct libwebsocket_context *
+libwebsocket_create_context(int port, const char *interf,
+ struct libwebsocket_protocols *protocols,
+ struct libwebsocket_extension *extensions,
+ const char *ssl_cert_filepath,
+ const char *ssl_private_key_filepath,
+ int gid, int uid, unsigned int options)
+{
+ int n;
+ int m;
+ int sockfd = 0;
+ int fd;
+ struct sockaddr_in serv_addr, cli_addr;
+ int opt = 1;
+ struct libwebsocket_context *context = NULL;
+ unsigned int slen;
+ char *p;
+ char hostname[1024] = "";
+// struct hostent *he;
+ struct libwebsocket *wsi;
+ struct sockaddr sa;
+
+#ifdef LWS_OPENSSL_SUPPORT
+ SSL_METHOD *method;
+ char ssl_err_buf[512];
+#endif
+
+#ifdef _WIN32
+ {
+ WORD wVersionRequested;
+ WSADATA wsaData;
+ int err;
+ HMODULE wsdll;
+
+ /* Use the MAKEWORD(lowbyte, highbyte) macro from Windef.h */
+ wVersionRequested = MAKEWORD(2, 2);
+
+ err = WSAStartup(wVersionRequested, &wsaData);
+ if (err != 0) {
+ /* Tell the user that we could not find a usable */
+ /* Winsock DLL. */
+ fprintf(stderr, "WSAStartup failed with error: %d\n",
+ err);
+ return NULL;
+ }
+
+ /* default to a poll() made out of select() */
+ poll = emulated_poll;
+
+ /* if windows socket lib available, use his WSAPoll */
+ wsdll = GetModuleHandle("Ws2_32.dll");
+ if (wsdll)
+ poll = (PFNWSAPOLL)GetProcAddress(wsdll, "WSAPoll");
+ }
+#endif
+
+
+ context = malloc(sizeof(struct libwebsocket_context));
+ if (!context) {
+ fprintf(stderr, "No memory for websocket context\n");
+ return NULL;
+ }
+ context->protocols = protocols;
+ context->listen_port = port;
+ context->http_proxy_port = 0;
+ context->http_proxy_address[0] = '\0';
+ context->options = options;
+ context->fds_count = 0;
+ context->extensions = extensions;
+ context->last_timeout_check_s = 0;
+
+#ifdef WIN32
+ context->fd_random = 0;
+#else
+ context->fd_random = open(SYSTEM_RANDOM_FILEPATH, O_RDONLY);
+ if (context->fd_random < 0) {
+ fprintf(stderr, "Unable to open random device %s %d\n",
+ SYSTEM_RANDOM_FILEPATH, context->fd_random);
+ return NULL;
+ }
+#endif
+
+#ifdef LWS_OPENSSL_SUPPORT
+ context->use_ssl = 0;
+ context->ssl_ctx = NULL;
+ context->ssl_client_ctx = NULL;
+ openssl_websocket_private_data_index = 0;
+#endif
+ /* find canonical hostname */
+
+ hostname[(sizeof hostname) - 1] = '\0';
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_family = AF_INET;
+ sa.sa_data[(sizeof sa.sa_data) - 1] = '\0';
+ gethostname(hostname, (sizeof hostname) - 1);
+
+ n = 0;
+
+ if (strlen(hostname) < sizeof(sa.sa_data) - 1) {
+ strcpy(sa.sa_data, hostname);
+// fprintf(stderr, "my host name is %s\n", sa.sa_data);
+ n = getnameinfo(&sa, sizeof(sa), hostname,
+ (sizeof hostname) - 1, NULL, 0, 0);
+ }
+
+ if (!n) {
+ strncpy(context->canonical_hostname, hostname,
+ sizeof context->canonical_hostname - 1);
+ context->canonical_hostname[
+ sizeof context->canonical_hostname - 1] = '\0';
+ } else
+ strncpy(context->canonical_hostname, hostname,
+ sizeof context->canonical_hostname - 1);
+
+// fprintf(stderr, "context->canonical_hostname = %s\n",
+// context->canonical_hostname);
+
+ /* split the proxy ads:port if given */
+
+ p = getenv("http_proxy");
+ if (p) {
+ strncpy(context->http_proxy_address, p,
+ sizeof context->http_proxy_address - 1);
+ context->http_proxy_address[
+ sizeof context->http_proxy_address - 1] = '\0';
+
+ p = strchr(context->http_proxy_address, ':');
+ if (p == NULL) {
+ fprintf(stderr, "http_proxy needs to be ads:port\n");
+ return NULL;
+ }
+ *p = '\0';
+ context->http_proxy_port = atoi(p + 1);
+
+ fprintf(stderr, "Using proxy %s:%u\n",
+ context->http_proxy_address,
+ context->http_proxy_port);
+ }
+
+ if (port) {
+
+#ifdef LWS_OPENSSL_SUPPORT
+ context->use_ssl = ssl_cert_filepath != NULL &&
+ ssl_private_key_filepath != NULL;
+ if (context->use_ssl)
+ fprintf(stderr, " Compiled with SSL support, "
+ "using it\n");
+ else
+ fprintf(stderr, " Compiled with SSL support, "
+ "not using it\n");
+
+#else
+ if (ssl_cert_filepath != NULL &&
+ ssl_private_key_filepath != NULL) {
+ fprintf(stderr, " Not compiled for OpenSSl support!\n");
+ return NULL;
+ }
+ fprintf(stderr, " Compiled without SSL support, "
+ "serving unencrypted\n");
+#endif
+ }
+
+ /* ignore SIGPIPE */
+#ifdef WIN32
+#else
+ signal(SIGPIPE, sigpipe_handler);
+#endif
+
+
+#ifdef LWS_OPENSSL_SUPPORT
+
+ /* basic openssl init */
+
+ SSL_library_init();
+
+ OpenSSL_add_all_algorithms();
+ SSL_load_error_strings();
+
+ openssl_websocket_private_data_index =
+ SSL_get_ex_new_index(0, "libwebsockets", NULL, NULL, NULL);
+
+ /*
+ * Firefox insists on SSLv23 not SSLv3
+ * Konq disables SSLv2 by default now, SSLv23 works
+ */
+
+ method = (SSL_METHOD *)SSLv23_server_method();
+ if (!method) {
+ fprintf(stderr, "problem creating ssl method: %s\n",
+ ERR_error_string(ERR_get_error(), ssl_err_buf));
+ return NULL;
+ }
+ context->ssl_ctx = SSL_CTX_new(method); /* create context */
+ if (!context->ssl_ctx) {
+ fprintf(stderr, "problem creating ssl context: %s\n",
+ ERR_error_string(ERR_get_error(), ssl_err_buf));
+ return NULL;
+ }
+
+ /* client context */
+
+ if (port == CONTEXT_PORT_NO_LISTEN) {
+ method = (SSL_METHOD *)SSLv23_client_method();
+ if (!method) {
+ fprintf(stderr, "problem creating ssl method: %s\n",
+ ERR_error_string(ERR_get_error(), ssl_err_buf));
+ return NULL;
+ }
+ /* create context */
+ context->ssl_client_ctx = SSL_CTX_new(method);
+ if (!context->ssl_client_ctx) {
+ fprintf(stderr, "problem creating ssl context: %s\n",
+ ERR_error_string(ERR_get_error(), ssl_err_buf));
+ return NULL;
+ }
+
+ /* openssl init for cert verification (for client sockets) */
+
+ if (!SSL_CTX_load_verify_locations(
+ context->ssl_client_ctx, NULL,
+ LWS_OPENSSL_CLIENT_CERTS))
+ fprintf(stderr,
+ "Unable to load SSL Client certs from %s "
+ "(set by --with-client-cert-dir= in configure) -- "
+ " client ssl isn't going to work",
+ LWS_OPENSSL_CLIENT_CERTS);
+
+ /*
+ * callback allowing user code to load extra verification certs
+ * helping the client to verify server identity
+ */
+
+ context->protocols[0].callback(context, NULL,
+ LWS_CALLBACK_OPENSSL_LOAD_EXTRA_CLIENT_VERIFY_CERTS,
+ context->ssl_client_ctx, NULL, 0);
+ }
+
+ /* as a server, are we requiring clients to identify themselves? */
+
+ if (options & LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT) {
+
+ /* absolutely require the client cert */
+
+ SSL_CTX_set_verify(context->ssl_ctx,
+ SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
+ OpenSSL_verify_callback);
+
+ /*
+ * give user code a chance to load certs into the server
+ * allowing it to verify incoming client certs
+ */
+
+ context->protocols[0].callback(context, NULL,
+ LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS,
+ context->ssl_ctx, NULL, 0);
+ }
+
+ if (context->use_ssl) {
+
+ /* openssl init for server sockets */
+
+ /* set the local certificate from CertFile */
+ n = SSL_CTX_use_certificate_file(context->ssl_ctx,
+ ssl_cert_filepath, SSL_FILETYPE_PEM);
+ if (n != 1) {
+ fprintf(stderr, "problem getting cert '%s': %s\n",
+ ssl_cert_filepath,
+ ERR_error_string(ERR_get_error(), ssl_err_buf));
+ return NULL;
+ }
+ /* set the private key from KeyFile */
+ if (SSL_CTX_use_PrivateKey_file(context->ssl_ctx,
+ ssl_private_key_filepath, SSL_FILETYPE_PEM) != 1) {
+ fprintf(stderr, "ssl problem getting key '%s': %s\n",
+ ssl_private_key_filepath,
+ ERR_error_string(ERR_get_error(), ssl_err_buf));
+ return NULL;
+ }
+ /* verify private key */
+ if (!SSL_CTX_check_private_key(context->ssl_ctx)) {
+ fprintf(stderr, "Private SSL key doesn't match cert\n");
+ return NULL;
+ }
+
+ /* SSL is happy and has a cert it's content with */
+ }
+#endif
+
+ /* selftest */
+
+ if (lws_b64_selftest())
+ return NULL;
+
+ /* fd hashtable init */
+
+ for (n = 0; n < FD_HASHTABLE_MODULUS; n++)
+ context->fd_hashtable[n].length = 0;
+
+ /* set up our external listening socket we serve on */
+
+ if (port) {
+
+ sockfd = socket(AF_INET, SOCK_STREAM, 0);
+ if (sockfd < 0) {
+ fprintf(stderr, "ERROR opening socket");
+ return NULL;
+ }
+
+ /* allow us to restart even if old sockets in TIME_WAIT */
+ setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR,
+ (const void *)&opt, sizeof(opt));
+
+ /* Disable Nagle */
+ opt = 1;
+ setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY,
+ (const void *)&opt, sizeof(opt));
+
+ bzero((char *) &serv_addr, sizeof(serv_addr));
+ serv_addr.sin_family = AF_INET;
+ if (interf == NULL)
+ serv_addr.sin_addr.s_addr = INADDR_ANY;
+ else
+ interface_to_sa(interf, &serv_addr,
+ sizeof(serv_addr));
+ serv_addr.sin_port = htons(port);
+
+ n = bind(sockfd, (struct sockaddr *) &serv_addr,
+ sizeof(serv_addr));
+ if (n < 0) {
+ fprintf(stderr, "ERROR on binding to port %d (%d %d)\n",
+ port, n, errno);
+ return NULL;
+ }
+
+ wsi = malloc(sizeof(struct libwebsocket));
+ memset(wsi, 0, sizeof(struct libwebsocket));
+ wsi->sock = sockfd;
+ wsi->count_active_extensions = 0;
+ wsi->mode = LWS_CONNMODE_SERVER_LISTENER;
+ insert_wsi(context, wsi);
+
+ listen(sockfd, 5);
+ fprintf(stderr, " Listening on port %d\n", port);
+
+ /* list in the internal poll array */
+
+ context->fds[context->fds_count].fd = sockfd;
+ context->fds[context->fds_count++].events = POLLIN;
+
+ /* external POLL support via protocol 0 */
+ context->protocols[0].callback(context, wsi,
+ LWS_CALLBACK_ADD_POLL_FD,
+ (void *)(long)sockfd, NULL, POLLIN);
+
+ }
+
+ /*
+ * drop any root privs for this process
+ * to listen on port < 1023 we would have needed root, but now we are
+ * listening, we don't want the power for anything else
+ */
+#ifdef WIN32
+#else
+ if (gid != -1)
+ if (setgid(gid))
+ fprintf(stderr, "setgid: %s\n", strerror(errno));
+ if (uid != -1)
+ if (setuid(uid))
+ fprintf(stderr, "setuid: %s\n", strerror(errno));
+#endif
+
+ /* set up our internal broadcast trigger sockets per-protocol */
+
+ for (context->count_protocols = 0;
+ protocols[context->count_protocols].callback;
+ context->count_protocols++) {
+
+ debug(" Protocol: %s\n", protocols[context->count_protocols].name);
+
+ protocols[context->count_protocols].owning_server = context;
+ protocols[context->count_protocols].protocol_index =
+ context->count_protocols;
+
+ fd = socket(AF_INET, SOCK_STREAM, 0);
+ if (fd < 0) {
+ fprintf(stderr, "ERROR opening socket");
+ return NULL;
+ }
+
+ /* allow us to restart even if old sockets in TIME_WAIT */
+ setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const void *)&opt,
+ sizeof(opt));
+
+ bzero((char *) &serv_addr, sizeof(serv_addr));
+ serv_addr.sin_family = AF_INET;
+ serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
+ serv_addr.sin_port = 0; /* pick the port for us */
+
+ n = bind(fd, (struct sockaddr *) &serv_addr, sizeof(serv_addr));
+ if (n < 0) {
+ fprintf(stderr, "ERROR on binding to port %d (%d %d)\n",
+ port, n, errno);
+ return NULL;
+ }
+
+ slen = sizeof cli_addr;
+ n = getsockname(fd, (struct sockaddr *)&cli_addr, &slen);
+ if (n < 0) {
+ fprintf(stderr, "getsockname failed\n");
+ return NULL;
+ }
+ protocols[context->count_protocols].broadcast_socket_port =
+ ntohs(cli_addr.sin_port);
+ listen(fd, 5);
+
+ debug(" Protocol %s broadcast socket %d\n",
+ protocols[context->count_protocols].name,
+ ntohs(cli_addr.sin_port));
+
+ /* dummy wsi per broadcast proxy socket */
+
+ wsi = malloc(sizeof(struct libwebsocket));
+ memset(wsi, 0, sizeof(struct libwebsocket));
+ wsi->sock = fd;
+ wsi->mode = LWS_CONNMODE_BROADCAST_PROXY_LISTENER;
+ wsi->count_active_extensions = 0;
+ /* note which protocol we are proxying */
+ wsi->protocol_index_for_broadcast_proxy =
+ context->count_protocols;
+ insert_wsi(context, wsi);
+
+ /* list in internal poll array */
+
+ context->fds[context->fds_count].fd = fd;
+ context->fds[context->fds_count].events = POLLIN;
+ context->fds[context->fds_count].revents = 0;
+ context->fds_count++;
+
+ /* external POLL support via protocol 0 */
+ context->protocols[0].callback(context, wsi,
+ LWS_CALLBACK_ADD_POLL_FD,
+ (void *)(long)fd, NULL, POLLIN);
+ }
+
+ /*
+ * give all extensions a chance to create any per-context
+ * allocations they need
+ */
+
+ m = LWS_EXT_CALLBACK_CLIENT_CONTEXT_CONSTRUCT;
+ if (port)
+ m = LWS_EXT_CALLBACK_SERVER_CONTEXT_CONSTRUCT;
+
+ if (extensions) {
+ while (extensions->callback) {
+ debug(" Extension: %s\n", extensions->name);
+ extensions->callback(context, extensions,
+ NULL, m, NULL, NULL, 0);
+ extensions++;
+ }
+ }
+
+ return context;
+}
+
+
+#ifndef LWS_NO_FORK
+
+/**
+ * libwebsockets_fork_service_loop() - Optional helper function forks off
+ * a process for the websocket server loop.
+ * You don't have to use this but if not, you
+ * have to make sure you are calling
+ * libwebsocket_service periodically to service
+ * the websocket traffic
+ * @context: server context returned by creation function
+ */
+
+int
+libwebsockets_fork_service_loop(struct libwebsocket_context *context)
+{
+ int fd;
+ struct sockaddr_in cli_addr;
+ int n;
+ int p;
+
+ n = fork();
+ if (n < 0)
+ return n;
+
+ if (!n) {
+
+ /* main process context */
+
+ /*
+ * set up the proxy sockets to allow broadcast from
+ * service process context
+ */
+
+ for (p = 0; p < context->count_protocols; p++) {
+ fd = socket(AF_INET, SOCK_STREAM, 0);
+ if (fd < 0) {
+ fprintf(stderr, "Unable to create socket\n");
+ return -1;
+ }
+ cli_addr.sin_family = AF_INET;
+ cli_addr.sin_port = htons(
+ context->protocols[p].broadcast_socket_port);
+ cli_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
+ n = connect(fd, (struct sockaddr *)&cli_addr,
+ sizeof cli_addr);
+ if (n < 0) {
+ fprintf(stderr, "Unable to connect to "
+ "broadcast socket %d, %s\n",
+ n, strerror(errno));
+ return -1;
+ }
+
+ context->protocols[p].broadcast_socket_user_fd = fd;
+ }
+
+ return 0;
+ }
+
+#ifdef HAVE_SYS_PRCTL_H
+ /* we want a SIGHUP when our parent goes down */
+ prctl(PR_SET_PDEATHSIG, SIGHUP);
+#endif
+
+ /* in this forked process, sit and service websocket connections */
+
+ while (1) {
+ if (libwebsocket_service(context, 1000))
+ break;
+#ifndef HAVE_SYS_PRCTL_H
+/*
+ * on systems without prctl() (i.e. anything but linux) we can notice that our
+ * parent is dead if getppid() returns 1. FIXME apparently this is not true for
+ * solaris, could remember ppid right after fork and wait for it to change.
+ */
+
+ if (getppid() == 1)
+ break;
+#endif
+ }
+
+
+ return 1;
+}
+
+#endif
+
+/**
+ * libwebsockets_get_protocol() - Returns a protocol pointer from a websocket
+ * connection.
+ * @wsi: pointer to struct websocket you want to know the protocol of
+ *
+ *
+ * This is useful to get the protocol to broadcast back to from inside
+ * the callback.
+ */
+
+const struct libwebsocket_protocols *
+libwebsockets_get_protocol(struct libwebsocket *wsi)
+{
+ return wsi->protocol;
+}
+
+/**
+ * libwebsockets_broadcast() - Sends a buffer to the callback for all active
+ * connections of the given protocol.
+ * @protocol: pointer to the protocol you will broadcast to all members of
+ * @buf: buffer containing the data to be broadcase. NOTE: this has to be
+ * allocated with LWS_SEND_BUFFER_PRE_PADDING valid bytes before
+ * the pointer and LWS_SEND_BUFFER_POST_PADDING afterwards in the
+ * case you are calling this function from callback context.
+ * @len: length of payload data in buf, starting from buf.
+ *
+ * This function allows bulk sending of a packet to every connection using
+ * the given protocol. It does not send the data directly; instead it calls
+ * the callback with a reason type of LWS_CALLBACK_BROADCAST. If the callback
+ * wants to actually send the data for that connection, the callback itself
+ * should call libwebsocket_write().
+ *
+ * libwebsockets_broadcast() can be called from another fork context without
+ * having to take any care about data visibility between the processes, it'll
+ * "just work".
+ */
+
+
+int
+libwebsockets_broadcast(const struct libwebsocket_protocols *protocol,
+ unsigned char *buf, size_t len)
+{
+ struct libwebsocket_context *context = protocol->owning_server;
+ int n;
+ int m;
+ struct libwebsocket *wsi;
+
+ if (!protocol->broadcast_socket_user_fd) {
+ /*
+ * We are either running unforked / flat, or we are being
+ * called from poll thread context
+ * eg, from a callback. In that case don't use sockets for
+ * broadcast IPC (since we can't open a socket connection to
+ * a socket listening on our own thread) but directly do the
+ * send action.
+ *
+ * Locking is not needed because we are by definition being
+ * called in the poll thread context and are serialized.
+ */
+
+ for (n = 0; n < FD_HASHTABLE_MODULUS; n++) {
+
+ for (m = 0; m < context->fd_hashtable[n].length; m++) {
+
+ wsi = context->fd_hashtable[n].wsi[m];
+
+ if (wsi->mode != LWS_CONNMODE_WS_SERVING)
+ continue;
+
+ /*
+ * never broadcast to
+ * non-established connections
+ */
+ if (wsi->state != WSI_STATE_ESTABLISHED)
+ continue;
+
+ /* only broadcast to guys using
+ * requested protocol
+ */
+ if (wsi->protocol != protocol)
+ continue;
+
+ wsi->protocol->callback(context, wsi,
+ LWS_CALLBACK_BROADCAST,
+ wsi->user_space,
+ buf, len);
+ }
+ }
+
+ return 0;
+ }
+
+ /*
+ * We're being called from a different process context than the server
+ * loop. Instead of broadcasting directly, we send our
+ * payload on a socket to do the IPC; the server process will serialize
+ * the broadcast action in its main poll() loop.
+ *
+ * There's one broadcast socket listening for each protocol supported
+ * set up when the websocket server initializes
+ */
+
+ n = send(protocol->broadcast_socket_user_fd, buf, len, MSG_NOSIGNAL);
+
+ return n;
+}
+
+int
+libwebsocket_is_final_fragment(struct libwebsocket *wsi)
+{
+ return wsi->final;
+}
+
+void *
+libwebsocket_ensure_user_space(struct libwebsocket *wsi)
+{
+ /* allocate the per-connection user memory (if any) */
+
+ if (wsi->protocol->per_session_data_size && !wsi->user_space) {
+ wsi->user_space = malloc(
+ wsi->protocol->per_session_data_size);
+ if (wsi->user_space == NULL) {
+ fprintf(stderr, "Out of memory for "
+ "conn user space\n");
+ return NULL;
+ }
+ memset(wsi->user_space, 0,
+ wsi->protocol->per_session_data_size);
+ }
+ return wsi->user_space;
+}
--- /dev/null
+/*
+ * libwebsockets - small server side websockets and web server implementation
+ *
+ * Copyright (C) 2010 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#ifndef __LIBWEBSOCKET_H__
+#define __LIBWEBSOCKET_H__
+
+#ifdef __cplusplus
+extern "C" {
+#include <cstddef>
+#endif
+
+#ifdef WIN32
+
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#include <stddef.h>
+#include "../win32port/win32helpers/websock-w32.h"
+
+#include "../win32port/win32helpers/gettimeofday.h"
+
+#define strcasecmp stricmp
+
+typedef int ssize_t;
+
+#ifdef LWS_DLL
+#ifdef LWS_INTERNAL
+#define LWS_EXTERN extern __declspec(dllexport)
+#else
+#define LWS_EXTERN extern __declspec(dllimport)
+#endif
+#endif
+
+#else
+#include <poll.h>
+#endif
+
+#ifndef LWS_EXTERN
+#define LWS_EXTERN extern
+#endif
+
+#define CONTEXT_PORT_NO_LISTEN 0
+#define MAX_MUX_RECURSION 2
+
+enum libwebsocket_context_options {
+ LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK = 1,
+ LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT = 2,
+};
+
+enum libwebsocket_callback_reasons {
+ LWS_CALLBACK_ESTABLISHED,
+ LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
+ LWS_CALLBACK_CLIENT_ESTABLISHED,
+ LWS_CALLBACK_CLOSED,
+ LWS_CALLBACK_RECEIVE,
+ LWS_CALLBACK_CLIENT_RECEIVE,
+ LWS_CALLBACK_CLIENT_RECEIVE_PONG,
+ LWS_CALLBACK_CLIENT_WRITEABLE,
+ LWS_CALLBACK_SERVER_WRITEABLE,
+ LWS_CALLBACK_HTTP,
+ LWS_CALLBACK_BROADCAST,
+ LWS_CALLBACK_FILTER_NETWORK_CONNECTION,
+ LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION,
+ LWS_CALLBACK_OPENSSL_LOAD_EXTRA_CLIENT_VERIFY_CERTS,
+ LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS,
+ LWS_CALLBACK_OPENSSL_PERFORM_CLIENT_CERT_VERIFICATION,
+ LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER,
+ LWS_CALLBACK_CONFIRM_EXTENSION_OKAY,
+ LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED,
+ /* external poll() management support */
+ LWS_CALLBACK_ADD_POLL_FD,
+ LWS_CALLBACK_DEL_POLL_FD,
+ LWS_CALLBACK_SET_MODE_POLL_FD,
+ LWS_CALLBACK_CLEAR_MODE_POLL_FD,
+};
+
+enum libwebsocket_extension_callback_reasons {
+ LWS_EXT_CALLBACK_SERVER_CONTEXT_CONSTRUCT,
+ LWS_EXT_CALLBACK_CLIENT_CONTEXT_CONSTRUCT,
+ LWS_EXT_CALLBACK_SERVER_CONTEXT_DESTRUCT,
+ LWS_EXT_CALLBACK_CLIENT_CONTEXT_DESTRUCT,
+ LWS_EXT_CALLBACK_CONSTRUCT,
+ LWS_EXT_CALLBACK_CLIENT_CONSTRUCT,
+ LWS_EXT_CALLBACK_CHECK_OK_TO_REALLY_CLOSE,
+ LWS_EXT_CALLBACK_CHECK_OK_TO_PROPOSE_EXTENSION,
+ LWS_EXT_CALLBACK_DESTROY,
+ LWS_EXT_CALLBACK_DESTROY_ANY_WSI_CLOSING,
+ LWS_EXT_CALLBACK_ANY_WSI_ESTABLISHED,
+ LWS_EXT_CALLBACK_PACKET_RX_PREPARSE,
+ LWS_EXT_CALLBACK_PACKET_TX_PRESEND,
+ LWS_EXT_CALLBACK_PACKET_TX_DO_SEND,
+ LWS_EXT_CALLBACK_HANDSHAKE_REPLY_TX,
+ LWS_EXT_CALLBACK_FLUSH_PENDING_TX,
+ LWS_EXT_CALLBACK_EXTENDED_PAYLOAD_RX,
+ LWS_EXT_CALLBACK_CAN_PROXY_CLIENT_CONNECTION,
+ LWS_EXT_CALLBACK_1HZ,
+ LWS_EXT_CALLBACK_REQUEST_ON_WRITEABLE,
+ LWS_EXT_CALLBACK_IS_WRITEABLE,
+};
+
+enum libwebsocket_write_protocol {
+ LWS_WRITE_TEXT,
+ LWS_WRITE_BINARY,
+ LWS_WRITE_CONTINUATION,
+ LWS_WRITE_HTTP,
+
+ /* special 04+ opcodes */
+
+ LWS_WRITE_CLOSE,
+ LWS_WRITE_PING,
+ LWS_WRITE_PONG,
+
+ /* flags */
+
+ LWS_WRITE_NO_FIN = 0x40,
+ /*
+ * client packet payload goes out on wire unmunged
+ * only useful for security tests since normal servers cannot
+ * decode the content if used
+ */
+ LWS_WRITE_CLIENT_IGNORE_XOR_MASK = 0x80
+};
+
+/*
+ * you need these to look at headers that have been parsed if using the
+ * LWS_CALLBACK_FILTER_CONNECTION callback. If a header from the enum
+ * list below is absent, .token = NULL and token_len = 0. Otherwise .token
+ * points to .token_len chars containing that header content.
+ */
+
+struct lws_tokens {
+ char *token;
+ int token_len;
+};
+
+enum lws_token_indexes {
+ WSI_TOKEN_GET_URI,
+ WSI_TOKEN_HOST,
+ WSI_TOKEN_CONNECTION,
+ WSI_TOKEN_KEY1,
+ WSI_TOKEN_KEY2,
+ WSI_TOKEN_PROTOCOL,
+ WSI_TOKEN_UPGRADE,
+ WSI_TOKEN_ORIGIN,
+ WSI_TOKEN_DRAFT,
+ WSI_TOKEN_CHALLENGE,
+
+ /* new for 04 */
+ WSI_TOKEN_KEY,
+ WSI_TOKEN_VERSION,
+ WSI_TOKEN_SWORIGIN,
+
+ /* new for 05 */
+ WSI_TOKEN_EXTENSIONS,
+
+ /* client receives these */
+ WSI_TOKEN_ACCEPT,
+ WSI_TOKEN_NONCE,
+ WSI_TOKEN_HTTP,
+ WSI_TOKEN_MUXURL,
+
+ /* always last real token index*/
+ WSI_TOKEN_COUNT,
+ /* parser state additions */
+ WSI_TOKEN_NAME_PART,
+ WSI_TOKEN_SKIPPING,
+ WSI_TOKEN_SKIPPING_SAW_CR,
+ WSI_PARSING_COMPLETE,
+ WSI_INIT_TOKEN_MUXURL,
+};
+
+/*
+ * From 06 spec
+ 1000
+
+ 1000 indicates a normal closure, meaning whatever purpose the
+ connection was established for has been fulfilled.
+
+ 1001
+
+ 1001 indicates that an endpoint is "going away", such as a server
+ going down, or a browser having navigated away from a page.
+
+ 1002
+
+ 1002 indicates that an endpoint is terminating the connection due
+ to a protocol error.
+
+ 1003
+
+ 1003 indicates that an endpoint is terminating the connection
+ because it has received a type of data it cannot accept (e.g. an
+ endpoint that understands only text data may send this if it
+ receives a binary message.)
+
+ 1004
+
+ 1004 indicates that an endpoint is terminating the connection
+ because it has received a message that is too large.
+*/
+
+enum lws_close_status {
+ LWS_CLOSE_STATUS_NOSTATUS = 0,
+ LWS_CLOSE_STATUS_NORMAL = 1000,
+ LWS_CLOSE_STATUS_GOINGAWAY = 1001,
+ LWS_CLOSE_STATUS_PROTOCOL_ERR = 1002,
+ LWS_CLOSE_STATUS_UNACCEPTABLE_OPCODE = 1003,
+ LWS_CLOSE_STATUS_PAYLOAD_TOO_LARGE = 1004,
+};
+
+struct libwebsocket;
+struct libwebsocket_context;
+struct libwebsocket_extension;
+
+/**
+ * callback_function() - User server actions
+ * @context: Websockets context
+ * @wsi: Opaque websocket instance pointer
+ * @reason: The reason for the call
+ * @user: Pointer to per-session user data allocated by library
+ * @in: Pointer used for some callback reasons
+ * @len: Length set for some callback reasons
+ *
+ * This callback is the way the user controls what is served. All the
+ * protocol detail is hidden and handled by the library.
+ *
+ * For each connection / session there is user data allocated that is
+ * pointed to by "user". You set the size of this user data area when
+ * the library is initialized with libwebsocket_create_server.
+ *
+ * You get an opportunity to initialize user data when called back with
+ * LWS_CALLBACK_ESTABLISHED reason.
+ *
+ * LWS_CALLBACK_ESTABLISHED: after the server completes a handshake with
+ * an incoming client
+ *
+ * LWS_CALLBACK_CLIENT_CONNECTION_ERROR: the request client connection has
+ * been unable to complete a handshake with the remote server
+ *
+ * LWS_CALLBACK_CLIENT_ESTABLISHED: after your client connection completed
+ * a handshake with the remote server
+ *
+ * LWS_CALLBACK_CLOSED: when the websocket session ends
+ *
+ * LWS_CALLBACK_BROADCAST: signal to send to client (you would use
+ * libwebsocket_write() taking care about the
+ * special buffer requirements
+ *
+ * LWS_CALLBACK_RECEIVE: data has appeared for this server endpoint from a
+ * remote client, it can be found at *in and is
+ * len bytes long
+ *
+ * LWS_CALLBACK_CLIENT_RECEIVE_PONG: if you elected to see PONG packets,
+ * they appear with this callback reason. PONG
+ * packets only exist in 04+ protocol
+ *
+ * LWS_CALLBACK_CLIENT_RECEIVE: data has appeared from the server for the
+ * client connection, it can be found at *in and
+ * is len bytes long
+ *
+ * LWS_CALLBACK_HTTP: an http request has come from a client that is not
+ * asking to upgrade the connection to a websocket
+ * one. This is a chance to serve http content,
+ * for example, to send a script to the client
+ * which will then open the websockets connection.
+ * @in points to the URI path requested and
+ * libwebsockets_serve_http_file() makes it very
+ * simple to send back a file to the client.
+ *
+ * LWS_CALLBACK_CLIENT_WRITEABLE:
+ * LWS_CALLBACK_SERVER_WRITEABLE: If you call
+ * libwebsocket_callback_on_writable() on a connection, you will
+ * get one of these callbacks coming when the connection socket
+ * is able to accept another write packet without blocking.
+ * If it already was able to take another packet without blocking,
+ * you'll get this callback at the next call to the service loop
+ * function. Notice that CLIENTs get LWS_CALLBACK_CLIENT_WRITEABLE
+ * and servers get LWS_CALLBACK_SERVER_WRITEABLE.
+ *
+ * LWS_CALLBACK_FILTER_NETWORK_CONNECTION: called when a client connects to
+ * the server at network level; the connection is accepted but then
+ * passed to this callback to decide whether to hang up immediately
+ * or not, based on the client IP. @user contains the connection
+ * socket's descriptor. Return non-zero to terminate
+ * the connection before sending or receiving anything.
+ * Because this happens immediately after the network connection
+ * from the client, there's no websocket protocol selected yet so
+ * this callback is issued only to protocol 0.
+ *
+ * LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION: called when the handshake has
+ * been received and parsed from the client, but the response is
+ * not sent yet. Return non-zero to disallow the connection.
+ * @user is a pointer to an array of struct lws_tokens, you can
+ * use the header enums lws_token_indexes from libwebsockets.h
+ * to check for and read the supported header presence and
+ * content before deciding to allow the handshake to proceed or
+ * to kill the connection.
+ *
+ * LWS_CALLBACK_OPENSSL_LOAD_EXTRA_CLIENT_VERIFY_CERTS: if configured for
+ * including OpenSSL support, this callback allows your user code
+ * to perform extra SSL_CTX_load_verify_locations() or similar
+ * calls to direct OpenSSL where to find certificates the client
+ * can use to confirm the remote server identity. @user is the
+ * OpenSSL SSL_CTX*
+ *
+ * LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS: if configured for
+ * including OpenSSL support, this callback allows your user code
+ * to load extra certifcates into the server which allow it to
+ * verify the validity of certificates returned by clients. @user
+ * is the server's OpenSSL SSL_CTX*
+ *
+ * LWS_CALLBACK_OPENSSL_PERFORM_CLIENT_CERT_VERIFICATION: if the
+ * libwebsockets context was created with the option
+ * LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT, then this
+ * callback is generated during OpenSSL verification of the cert
+ * sent from the client. It is sent to protocol[0] callback as
+ * no protocol has been negotiated on the connection yet.
+ * Notice that the libwebsockets context and wsi are both NULL
+ * during this callback. See
+ * http://www.openssl.org/docs/ssl/SSL_CTX_set_verify.html
+ * to understand more detail about the OpenSSL callback that
+ * generates this libwebsockets callback and the meanings of the
+ * arguments passed. In this callback, @user is the x509_ctx,
+ * @in is the ssl pointer and @len is preverify_ok
+ * Notice that this callback maintains libwebsocket return
+ * conventions, return 0 to mean the cert is OK or 1 to fail it.
+ * This also means that if you don't handle this callback then
+ * the default callback action of returning 0 allows the client
+ * certificates.
+ *
+ * LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER: this callback happens
+ * when a client handshake is being compiled. @user is NULL,
+ * @in is a char **, it's pointing to a char * which holds the
+ * next location in the header buffer where you can add
+ * headers, and @len is the remaining space in the header buffer,
+ * which is typically some hundreds of bytes. So, to add a canned
+ * cookie, your handler code might look similar to:
+ *
+ * char **p = (char **)in;
+ *
+ * if (len < 100)
+ * return 1;
+ *
+ * *p += sprintf(*p, "Cookie: a=b\x0d\x0a");
+ *
+ * return 0;
+ *
+ * Notice if you add anything, you just have to take care about
+ * the CRLF on the line you added. Obviously this callback is
+ * optional, if you don't handle it everything is fine.
+ *
+ * Notice the callback is coming to protocols[0] all the time,
+ * because there is no specific protocol handshook yet.
+ *
+ * LWS_CALLBACK_CONFIRM_EXTENSION_OKAY: When the server handshake code
+ * sees that it does support a requested extension, before
+ * accepting the extension by additing to the list sent back to
+ * the client it gives this callback just to check that it's okay
+ * to use that extension. It calls back to the requested protocol
+ * and with @in being the extension name, @len is 0 and @user is
+ * valid. Note though at this time the ESTABLISHED callback hasn't
+ * happened yet so if you initialize @user content there, @user
+ * content during this callback might not be useful for anything.
+ * Notice this callback comes to protocols[0].
+ *
+ * LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED: When a client
+ * connection is being prepared to start a handshake to a server,
+ * each supported extension is checked with protocols[0] callback
+ * with this reason, giving the user code a chance to suppress the
+ * claim to support that extension by returning non-zero. If
+ * unhandled, by default 0 will be returned and the extension
+ * support included in the header to the server. Notice this
+ * callback comes to protocols[0].
+ *
+ * The next four reasons are optional and only need taking care of if you
+ * will be integrating libwebsockets sockets into an external polling
+ * array.
+ *
+ * LWS_CALLBACK_ADD_POLL_FD: libwebsocket deals with its poll() loop
+ * internally, but in the case you are integrating with another
+ * server you will need to have libwebsocket sockets share a
+ * polling array with the other server. This and the other
+ * POLL_FD related callbacks let you put your specialized
+ * poll array interface code in the callback for protocol 0, the
+ * first protocol you support, usually the HTTP protocol in the
+ * serving case. This callback happens when a socket needs to be
+ * added to the polling loop: @user contains the fd, and
+ * @len is the events bitmap (like, POLLIN). If you are using the
+ * internal polling loop (the "service" callback), you can just
+ * ignore these callbacks.
+ *
+ * LWS_CALLBACK_DEL_POLL_FD: This callback happens when a socket descriptor
+ * needs to be removed from an external polling array. @user is
+ * the socket desricptor. If you are using the internal polling
+ * loop, you can just ignore it.
+ *
+ * LWS_CALLBACK_SET_MODE_POLL_FD: This callback happens when libwebsockets
+ * wants to modify the events for the socket descriptor in @user.
+ * The handler should OR @len on to the events member of the pollfd
+ * struct for this socket descriptor. If you are using the
+ * internal polling loop, you can just ignore it.
+ *
+ * LWS_CALLBACK_CLEAR_MODE_POLL_FD: This callback occurs when libwebsockets
+ * wants to modify the events for the socket descriptor in @user.
+ * The handler should AND ~@len on to the events member of the
+ * pollfd struct for this socket descriptor. If you are using the
+ * internal polling loop, you can just ignore it.
+ */
+LWS_EXTERN int callback(struct libwebsocket_context * context,
+ struct libwebsocket *wsi,
+ enum libwebsocket_callback_reasons reason, void *user,
+ void *in, size_t len);
+
+typedef int (callback_function)(struct libwebsocket_context * context,
+ struct libwebsocket *wsi,
+ enum libwebsocket_callback_reasons reason, void *user,
+ void *in, size_t len);
+
+
+/**
+ * extension_callback_function() - Hooks to allow extensions to operate
+ * @context: Websockets context
+ * @ext: This extension
+ * @wsi: Opaque websocket instance pointer
+ * @reason: The reason for the call
+ * @user: Pointer to per-session user data allocated by library
+ * @in: Pointer used for some callback reasons
+ * @len: Length set for some callback reasons
+ *
+ * Each extension that is active on a particular connection receives
+ * callbacks during the connection lifetime to allow the extension to
+ * operate on websocket data and manage itself.
+ *
+ * Libwebsockets takes care of allocating and freeing "user" memory for
+ * each active extension on each connection. That is what is pointed to
+ * by the @user parameter.
+ *
+ * LWS_EXT_CALLBACK_CONSTRUCT: called when the server has decided to
+ * select this extension from the list provided by the client,
+ * just before the server will send back the handshake accepting
+ * the connection with this extension active. This gives the
+ * extension a chance to initialize its connection context found
+ * in @user.
+ *
+ * LWS_EXT_CALLBACK_CLIENT_CONSTRUCT: same as LWS_EXT_CALLBACK_CONSTRUCT
+ * but called when client is instantiating this extension. Some
+ * extensions will work the same on client and server side and then
+ * you can just merge handlers for both CONSTRUCTS.
+ *
+ * LWS_EXT_CALLBACK_DESTROY: called when the connection the extension was
+ * being used on is about to be closed and deallocated. It's the
+ * last chance for the extension to deallocate anything it has
+ * allocated in the user data (pointed to by @user) before the
+ * user data is deleted. This same callback is used whether you
+ * are in client or server instantiation context.
+ *
+ * LWS_EXT_CALLBACK_PACKET_RX_PREPARSE: when this extension was active on
+ * a connection, and a packet of data arrived at the connection,
+ * it is passed to this callback to give the extension a chance to
+ * change the data, eg, decompress it. @user is pointing to the
+ * extension's private connection context data, @in is pointing
+ * to an lws_tokens struct, it consists of a char * pointer called
+ * token, and an int called token_len. At entry, these are
+ * set to point to the received buffer and set to the content
+ * length. If the extension will grow the content, it should use
+ * a new buffer allocated in its private user context data and
+ * set the pointed-to lws_tokens members to point to its buffer.
+ *
+ * LWS_EXT_CALLBACK_PACKET_TX_PRESEND: this works the same way as
+ * LWS_EXT_CALLBACK_PACKET_RX_PREPARSE above, except it gives the
+ * extension a chance to change websocket data just before it will
+ * be sent out. Using the same lws_token pointer scheme in @in,
+ * the extension can change the buffer and the length to be
+ * transmitted how it likes. Again if it wants to grow the
+ * buffer safely, it should copy the data into its own buffer and
+ * set the lws_tokens token pointer to it.
+ */
+LWS_EXTERN int extension_callback(struct libwebsocket_context * context,
+ struct libwebsocket_extension *ext,
+ struct libwebsocket *wsi,
+ enum libwebsocket_extension_callback_reasons reason, void *user,
+ void *in, size_t len);
+
+typedef int (extension_callback_function)(struct libwebsocket_context * context,
+ struct libwebsocket_extension *ext,
+ struct libwebsocket *wsi,
+ enum libwebsocket_extension_callback_reasons reason, void *user,
+ void *in, size_t len);
+
+/**
+ * struct libwebsocket_protocols - List of protocols and handlers server
+ * supports.
+ * @name: Protocol name that must match the one given in the client
+ * Javascript new WebSocket(url, 'protocol') name
+ * @callback: The service callback used for this protocol. It allows the
+ * service action for an entire protocol to be encapsulated in
+ * the protocol-specific callback
+ * @per_session_data_size: Each new connection using this protocol gets
+ * this much memory allocated on connection establishment and
+ * freed on connection takedown. A pointer to this per-connection
+ * allocation is passed into the callback in the 'user' parameter
+ * @owning_server: the server init call fills in this opaque pointer when
+ * registering this protocol with the server.
+ * @broadcast_socket_port: the server init call fills this in with the
+ * localhost port number used to forward broadcasts for this
+ * protocol
+ * @broadcast_socket_user_fd: the server init call fills this in ... the main()
+ * process context can write to this socket to perform broadcasts
+ * (use the libwebsockets_broadcast() api to do this instead,
+ * it works from any process context)
+ * @protocol_index: which protocol we are starting from zero
+ *
+ * This structure represents one protocol supported by the server. An
+ * array of these structures is passed to libwebsocket_create_server()
+ * allows as many protocols as you like to be handled by one server.
+ */
+
+struct libwebsocket_protocols {
+ const char *name;
+ callback_function *callback;
+ size_t per_session_data_size;
+
+ /*
+ * below are filled in on server init and can be left uninitialized,
+ * no need for user to use them directly either
+ */
+
+ struct libwebsocket_context *owning_server;
+ int broadcast_socket_port;
+ int broadcast_socket_user_fd;
+ int protocol_index;
+};
+
+/**
+ * struct libwebsocket_extension - An extension we know how to cope with
+ *
+ * @name: Formal extension name, eg, "deflate-stream"
+ * @callback: Service callback
+ * @per_session_data_size: Libwebsockets will auto-malloc this much
+ * memory for the use of the extension, a pointer
+ * to it comes in the @user callback parameter
+ * @per_context_private_data: Optional storage for this externsion that
+ * is per-context, so it can track stuff across
+ * all sessions, etc, if it wants
+ */
+
+struct libwebsocket_extension {
+ const char *name;
+ extension_callback_function *callback;
+ size_t per_session_data_size;
+ void * per_context_private_data;
+};
+
+
+
+LWS_EXTERN struct libwebsocket_context *
+libwebsocket_create_context(int port, const char * interf,
+ struct libwebsocket_protocols *protocols,
+ struct libwebsocket_extension *extensions,
+ const char *ssl_cert_filepath,
+ const char *ssl_private_key_filepath, int gid, int uid,
+ unsigned int options);
+
+LWS_EXTERN void
+libwebsocket_context_destroy(struct libwebsocket_context *context);
+
+LWS_EXTERN int
+libwebsockets_fork_service_loop(struct libwebsocket_context *context);
+
+LWS_EXTERN int
+libwebsocket_service(struct libwebsocket_context *context, int timeout_ms);
+
+LWS_EXTERN int
+libwebsocket_service_fd(struct libwebsocket_context *context,
+ struct pollfd *pollfd);
+
+/*
+ * IMPORTANT NOTICE!
+ *
+ * When sending with websocket protocol (LWS_WRITE_TEXT or LWS_WRITE_BINARY)
+ * the send buffer has to have LWS_SEND_BUFFER_PRE_PADDING bytes valid BEFORE
+ * buf, and LWS_SEND_BUFFER_POST_PADDING bytes valid AFTER (buf + len).
+ *
+ * This allows us to add protocol info before and after the data, and send as
+ * one packet on the network without payload copying, for maximum efficiency.
+ *
+ * So for example you need this kind of code to use libwebsocket_write with a
+ * 128-byte payload
+ *
+ * char buf[LWS_SEND_BUFFER_PRE_PADDING + 128 + LWS_SEND_BUFFER_POST_PADDING];
+ *
+ * // fill your part of the buffer... for example here it's all zeros
+ * memset(&buf[LWS_SEND_BUFFER_PRE_PADDING], 0, 128);
+ *
+ * libwebsocket_write(wsi, &buf[LWS_SEND_BUFFER_PRE_PADDING], 128);
+ *
+ * When sending LWS_WRITE_HTTP, there is no protocol addition and you can just
+ * use the whole buffer without taking care of the above.
+ */
+
+/*
+ * this is the frame nonce plus two header plus 8 length
+ * there's an additional two for mux extension per mux nesting level
+ * 2 byte prepend on close will already fit because control frames cannot use
+ * the big length style
+ */
+
+#define LWS_SEND_BUFFER_PRE_PADDING (4 + 10 + (2 * MAX_MUX_RECURSION))
+#define LWS_SEND_BUFFER_POST_PADDING 1
+
+LWS_EXTERN int
+libwebsocket_write(struct libwebsocket *wsi, unsigned char *buf, size_t len,
+ enum libwebsocket_write_protocol protocol);
+
+LWS_EXTERN int
+libwebsockets_serve_http_file(struct libwebsocket *wsi, const char *file,
+ const char *content_type);
+
+/* notice - you need the pre- and post- padding allocation for buf below */
+
+LWS_EXTERN int
+libwebsockets_broadcast(const struct libwebsocket_protocols *protocol,
+ unsigned char *buf, size_t len);
+
+LWS_EXTERN const struct libwebsocket_protocols *
+libwebsockets_get_protocol(struct libwebsocket *wsi);
+
+LWS_EXTERN int
+libwebsocket_callback_on_writable(struct libwebsocket_context *context,
+ struct libwebsocket *wsi);
+
+LWS_EXTERN int
+libwebsocket_callback_on_writable_all_protocol(
+ const struct libwebsocket_protocols *protocol);
+
+LWS_EXTERN int
+libwebsocket_get_socket_fd(struct libwebsocket *wsi);
+
+LWS_EXTERN int
+libwebsocket_is_final_fragment(struct libwebsocket *wsi);
+
+LWS_EXTERN void *
+libwebsocket_ensure_user_space(struct libwebsocket *wsi);
+
+LWS_EXTERN int
+libwebsocket_rx_flow_control(struct libwebsocket *wsi, int enable);
+
+LWS_EXTERN size_t
+libwebsockets_remaining_packet_payload(struct libwebsocket *wsi);
+
+LWS_EXTERN struct libwebsocket *
+libwebsocket_client_connect(struct libwebsocket_context *clients,
+ const char *address,
+ int port,
+ int ssl_connection,
+ const char *path,
+ const char *host,
+ const char *origin,
+ const char *protocol,
+ int ietf_version_or_minus_one);
+
+LWS_EXTERN struct libwebsocket *
+libwebsocket_client_connect_extended(struct libwebsocket_context *clients,
+ const char *address,
+ int port,
+ int ssl_connection,
+ const char *path,
+ const char *host,
+ const char *origin,
+ const char *protocol,
+ int ietf_version_or_minus_one,
+ void *userdata);
+
+LWS_EXTERN const char *
+libwebsocket_canonical_hostname(struct libwebsocket_context *context);
+
+
+LWS_EXTERN void
+libwebsockets_get_peer_addresses(int fd, char *name, int name_len,
+ char *rip, int rip_len);
+
+LWS_EXTERN void
+libwebsockets_hangup_on_client(struct libwebsocket_context *context, int fd);
+
+LWS_EXTERN void
+libwebsocket_close_and_free_session(struct libwebsocket_context *context,
+ struct libwebsocket *wsi, enum lws_close_status);
+
+LWS_EXTERN int
+libwebsockets_get_random(struct libwebsocket_context *context,
+ void *buf, int len);
+
+LWS_EXTERN int
+lws_send_pipe_choked(struct libwebsocket *wsi);
+
+LWS_EXTERN unsigned char *
+libwebsockets_SHA1(const unsigned char *d, size_t n, unsigned char *md);
+
+LWS_EXTERN int
+lws_b64_encode_string(const char *in, int in_len, char *out, int out_size);
+
+LWS_EXTERN int
+lws_b64_decode_string(const char *in, char *out, int out_size);
+
+LWS_EXTERN struct libwebsocket_extension libwebsocket_internal_extensions[];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * Modified from Polarssl here
+ * http://polarssl.org/show_source?file=md5
+ * under GPL2 or later
+ */
+
+#include <string.h>
+#include <stdio.h>
+
+
+#define GET_ULONG_LE(n, b, i) \
+{ \
+ (n) = ((unsigned long)(b)[i]) \
+ | ((unsigned long)(b)[(i) + 1] << 8) \
+ | ((unsigned long)(b)[(i) + 2] << 16) \
+ | ((unsigned long)(b)[(i) + 3] << 24); \
+}
+
+#define PUT_ULONG_LE(n, b, i) \
+{ \
+ (b)[i] = (unsigned char)(n); \
+ (b)[(i) + 1] = (unsigned char)((n) >> 8); \
+ (b)[(i) + 2] = (unsigned char)((n) >> 16); \
+ (b)[(i) + 3] = (unsigned char)((n) >> 24); \
+}
+
+static const unsigned char md5_padding[64] = {
+ 0x80, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+};
+
+static const unsigned long state_init[] = {
+ 0, 0, 0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476
+};
+
+static void
+md5_process(unsigned long *state, const unsigned char *data)
+{
+ unsigned long X[16], A, B, C, D;
+ int v;
+
+ for (v = 0; v < 16; v++)
+ GET_ULONG_LE(X[v], data, v << 2);
+
+#define S(x, n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
+
+#define P(a, b, c, d, k, s, t) { a += F(b, c, d) + X[k] + t; a = S(a, s) + b; }
+
+ A = state[0];
+ B = state[1];
+ C = state[2];
+ D = state[3];
+
+#define F(x, y, z) (z ^ (x & (y ^ z)))
+
+ P(A, B, C, D, 0, 7, 0xD76AA478);
+ P(D, A, B, C, 1, 12, 0xE8C7B756);
+ P(C, D, A, B, 2, 17, 0x242070DB);
+ P(B, C, D, A, 3, 22, 0xC1BDCEEE);
+ P(A, B, C, D, 4, 7, 0xF57C0FAF);
+ P(D, A, B, C, 5, 12, 0x4787C62A);
+ P(C, D, A, B, 6, 17, 0xA8304613);
+ P(B, C, D, A, 7, 22, 0xFD469501);
+ P(A, B, C, D, 8, 7, 0x698098D8);
+ P(D, A, B, C, 9, 12, 0x8B44F7AF);
+ P(C, D, A, B, 10, 17, 0xFFFF5BB1);
+ P(B, C, D, A, 11, 22, 0x895CD7BE);
+ P(A, B, C, D, 12, 7, 0x6B901122);
+ P(D, A, B, C, 13, 12, 0xFD987193);
+ P(C, D, A, B, 14, 17, 0xA679438E);
+ P(B, C, D, A, 15, 22, 0x49B40821);
+
+#undef F
+
+#define F(x, y, z) (y ^ (z & (x ^ y)))
+
+ P(A, B, C, D, 1, 5, 0xF61E2562);
+ P(D, A, B, C, 6, 9, 0xC040B340);
+ P(C, D, A, B, 11, 14, 0x265E5A51);
+ P(B, C, D, A, 0, 20, 0xE9B6C7AA);
+ P(A, B, C, D, 5, 5, 0xD62F105D);
+ P(D, A, B, C, 10, 9, 0x02441453);
+ P(C, D, A, B, 15, 14, 0xD8A1E681);
+ P(B, C, D, A, 4, 20, 0xE7D3FBC8);
+ P(A, B, C, D, 9, 5, 0x21E1CDE6);
+ P(D, A, B, C, 14, 9, 0xC33707D6);
+ P(C, D, A, B, 3, 14, 0xF4D50D87);
+ P(B, C, D, A, 8, 20, 0x455A14ED);
+ P(A, B, C, D, 13, 5, 0xA9E3E905);
+ P(D, A, B, C, 2, 9, 0xFCEFA3F8);
+ P(C, D, A, B, 7, 14, 0x676F02D9);
+ P(B, C, D, A, 12, 20, 0x8D2A4C8A);
+
+#undef F
+
+#define F(x, y, z) (x ^ y ^ z)
+
+ P(A, B, C, D, 5, 4, 0xFFFA3942);
+ P(D, A, B, C, 8, 11, 0x8771F681);
+ P(C, D, A, B, 11, 16, 0x6D9D6122);
+ P(B, C, D, A, 14, 23, 0xFDE5380C);
+ P(A, B, C, D, 1, 4, 0xA4BEEA44);
+ P(D, A, B, C, 4, 11, 0x4BDECFA9);
+ P(C, D, A, B, 7, 16, 0xF6BB4B60);
+ P(B, C, D, A, 10, 23, 0xBEBFBC70);
+ P(A, B, C, D, 13, 4, 0x289B7EC6);
+ P(D, A, B, C, 0, 11, 0xEAA127FA);
+ P(C, D, A, B, 3, 16, 0xD4EF3085);
+ P(B, C, D, A, 6, 23, 0x04881D05);
+ P(A, B, C, D, 9, 4, 0xD9D4D039);
+ P(D, A, B, C, 12, 11, 0xE6DB99E5);
+ P(C, D, A, B, 15, 16, 0x1FA27CF8);
+ P(B, C, D, A, 2, 23, 0xC4AC5665);
+
+#undef F
+
+#define F(x, y, z) (y ^ (x | ~z))
+
+ P(A, B, C, D, 0, 6, 0xF4292244);
+ P(D, A, B, C, 7, 10, 0x432AFF97);
+ P(C, D, A, B, 14, 15, 0xAB9423A7);
+ P(B, C, D, A, 5, 21, 0xFC93A039);
+ P(A, B, C, D, 12, 6, 0x655B59C3);
+ P(D, A, B, C, 3, 10, 0x8F0CCC92);
+ P(C, D, A, B, 10, 15, 0xFFEFF47D);
+ P(B, C, D, A, 1, 21, 0x85845DD1);
+ P(A, B, C, D, 8, 6, 0x6FA87E4F);
+ P(D, A, B, C, 15, 10, 0xFE2CE6E0);
+ P(C, D, A, B, 6, 15, 0xA3014314);
+ P(B, C, D, A, 13, 21, 0x4E0811A1);
+ P(A, B, C, D, 4, 6, 0xF7537E82);
+ P(D, A, B, C, 11, 10, 0xBD3AF235);
+ P(C, D, A, B, 2, 15, 0x2AD7D2BB);
+ P(B, C, D, A, 9, 21, 0xEB86D391);
+
+#undef F
+
+ state[0] += A;
+ state[1] += B;
+ state[2] += C;
+ state[3] += D;
+}
+
+static
+void md5_update(unsigned long *state, unsigned char *buffer,
+ const unsigned char *input, int ilen)
+{
+ int fill;
+ unsigned long left;
+
+ if (ilen <= 0)
+ return;
+
+ left = state[0] & 0x3F;
+ fill = 64 - left;
+
+ state[0] += ilen;
+ state[0] &= 0xFFFFFFFF;
+
+ if (state[0] < (unsigned long)ilen)
+ state[1]++;
+
+ if (left && ilen >= fill) {
+ memcpy(buffer + left, input, fill);
+ md5_process(&state[2], buffer);
+ input += fill;
+ ilen -= fill;
+ left = 0;
+ }
+
+ while (ilen >= 64) {
+ md5_process(&state[2], input);
+ input += 64;
+ ilen -= 64;
+ }
+
+ if (ilen > 0)
+ memcpy(buffer + left, input, ilen);
+}
+
+void
+MD5(const unsigned char *input, int ilen, unsigned char *output)
+{
+ unsigned long last, padn;
+ unsigned long high, low;
+ unsigned char msglen[8];
+ unsigned long state[6];
+ unsigned char buffer[64];
+
+ memcpy(&state[0], &state_init[0], sizeof(state_init));
+
+ md5_update(state, buffer, input, ilen);
+
+ high = (state[0] >> 29) | (state[1] << 3);
+ low = state[0] << 3;
+
+ PUT_ULONG_LE(low, msglen, 0);
+ PUT_ULONG_LE(high, msglen, 4);
+
+ last = state[0] & 0x3F;
+ padn = (last < 56) ? (56 - last) : (120 - last);
+
+ md5_update(state, buffer, md5_padding, padn);
+ md5_update(state, buffer, msglen, 8);
+
+ PUT_ULONG_LE(state[2], output, 0);
+ PUT_ULONG_LE(state[3], output, 4);
+ PUT_ULONG_LE(state[4], output, 8);
+ PUT_ULONG_LE(state[5], output, 12);
+}
+
--- /dev/null
+/*
+ * libwebsockets - small server side websockets and web server implementation
+ *
+ * Copyright (C) 2010 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include "private-libwebsockets.h"
+
+const struct lws_tokens lws_tokens[WSI_TOKEN_COUNT] = {
+
+ /* win32 can't do C99 */
+
+/* [WSI_TOKEN_GET_URI] = */{ "GET ", 4 },
+/* [WSI_TOKEN_HOST] = */{ "Host:", 5 },
+/* [WSI_TOKEN_CONNECTION] = */{ "Connection:", 11 },
+/* [WSI_TOKEN_KEY1] = */{ "Sec-WebSocket-Key1:", 19 },
+/* [WSI_TOKEN_KEY2] = */{ "Sec-WebSocket-Key2:", 19 },
+/* [WSI_TOKEN_PROTOCOL] = */{ "Sec-WebSocket-Protocol:", 23 },
+/* [WSI_TOKEN_UPGRADE] = */{ "Upgrade:", 8 },
+/* [WSI_TOKEN_ORIGIN] = */{ "Origin:", 7 },
+/* [WSI_TOKEN_DRAFT] = */{ "Sec-WebSocket-Draft:", 20 },
+/* [WSI_TOKEN_CHALLENGE] = */{ "\x0d\x0a", 2 },
+
+/* [WSI_TOKEN_KEY] = */{ "Sec-WebSocket-Key:", 18 },
+/* [WSI_TOKEN_VERSION] = */{ "Sec-WebSocket-Version:", 22 },
+/* [WSI_TOKEN_SWORIGIN]= */{ "Sec-WebSocket-Origin:", 21 },
+
+/* [WSI_TOKEN_EXTENSIONS] = */{ "Sec-WebSocket-Extensions:", 25 },
+
+/* [WSI_TOKEN_ACCEPT] = */{ "Sec-WebSocket-Accept:", 21 },
+/* [WSI_TOKEN_NONCE] = */{ "Sec-WebSocket-Nonce:", 20 },
+/* [WSI_TOKEN_HTTP] = */{ "HTTP/1.1 ", 9 },
+/* [WSI_TOKEN_MUXURL] = */{ "", -1 },
+
+};
+
+int libwebsocket_parse(struct libwebsocket *wsi, unsigned char c)
+{
+ int n;
+
+ switch (wsi->parser_state) {
+ case WSI_TOKEN_GET_URI:
+ case WSI_TOKEN_HOST:
+ case WSI_TOKEN_CONNECTION:
+ case WSI_TOKEN_KEY1:
+ case WSI_TOKEN_KEY2:
+ case WSI_TOKEN_PROTOCOL:
+ case WSI_TOKEN_UPGRADE:
+ case WSI_TOKEN_ORIGIN:
+ case WSI_TOKEN_SWORIGIN:
+ case WSI_TOKEN_DRAFT:
+ case WSI_TOKEN_CHALLENGE:
+ case WSI_TOKEN_KEY:
+ case WSI_TOKEN_VERSION:
+ case WSI_TOKEN_ACCEPT:
+ case WSI_TOKEN_NONCE:
+ case WSI_TOKEN_EXTENSIONS:
+ case WSI_TOKEN_HTTP:
+ case WSI_TOKEN_MUXURL:
+
+ debug("WSI_TOKEN_(%d) '%c'\n", wsi->parser_state, c);
+
+ /* collect into malloc'd buffers */
+ /* optional space swallow */
+ if (!wsi->utf8_token[wsi->parser_state].token_len && c == ' ')
+ break;
+
+ /* special case space terminator for get-uri */
+ if (wsi->parser_state == WSI_TOKEN_GET_URI && c == ' ') {
+ wsi->utf8_token[wsi->parser_state].token[
+ wsi->utf8_token[wsi->parser_state].token_len] = '\0';
+ wsi->parser_state = WSI_TOKEN_SKIPPING;
+ break;
+ }
+
+ /* allocate appropriate memory */
+ if (wsi->utf8_token[wsi->parser_state].token_len ==
+ wsi->current_alloc_len - 1) {
+ /* need to extend */
+ wsi->current_alloc_len += LWS_ADDITIONAL_HDR_ALLOC;
+ if (wsi->current_alloc_len >= LWS_MAX_HEADER_LEN) {
+ /* it's waaay to much payload, fail it */
+ strcpy(wsi->utf8_token[wsi->parser_state].token,
+ "!!! Length exceeded maximum supported !!!");
+ wsi->parser_state = WSI_TOKEN_SKIPPING;
+ break;
+ }
+ wsi->utf8_token[wsi->parser_state].token =
+ realloc(wsi->utf8_token[wsi->parser_state].token,
+ wsi->current_alloc_len);
+ }
+
+ /* bail at EOL */
+ if (wsi->parser_state != WSI_TOKEN_CHALLENGE && c == '\x0d') {
+ wsi->utf8_token[wsi->parser_state].token[
+ wsi->utf8_token[wsi->parser_state].token_len] = '\0';
+ wsi->parser_state = WSI_TOKEN_SKIPPING_SAW_CR;
+ debug("*\n");
+ break;
+ }
+
+ wsi->utf8_token[wsi->parser_state].token[
+ wsi->utf8_token[wsi->parser_state].token_len++] = c;
+
+ /* per-protocol end of headers management */
+
+ if (wsi->parser_state != WSI_TOKEN_CHALLENGE)
+ break;
+
+ /* -76 has no version header ... server */
+ if (!wsi->utf8_token[WSI_TOKEN_VERSION].token_len &&
+ wsi->mode != LWS_CONNMODE_WS_CLIENT_WAITING_SERVER_REPLY &&
+ wsi->utf8_token[wsi->parser_state].token_len != 8)
+ break;
+
+ /* -76 has no version header ... client */
+ if (!wsi->utf8_token[WSI_TOKEN_VERSION].token_len &&
+ wsi->mode == LWS_CONNMODE_WS_CLIENT_WAITING_SERVER_REPLY &&
+ wsi->utf8_token[wsi->parser_state].token_len != 16)
+ break;
+
+ /* <= 03 has old handshake with version header needs 8 bytes */
+ if (wsi->utf8_token[WSI_TOKEN_VERSION].token_len &&
+ atoi(wsi->utf8_token[WSI_TOKEN_VERSION].token) < 4 &&
+ wsi->utf8_token[wsi->parser_state].token_len != 8)
+ break;
+
+ /* no payload challenge in 01 + */
+
+ if (wsi->utf8_token[WSI_TOKEN_VERSION].token_len &&
+ atoi(wsi->utf8_token[WSI_TOKEN_VERSION].token) > 0) {
+ wsi->utf8_token[WSI_TOKEN_CHALLENGE].token_len = 0;
+ free(wsi->utf8_token[WSI_TOKEN_CHALLENGE].token);
+ wsi->utf8_token[WSI_TOKEN_CHALLENGE].token = NULL;
+ }
+
+ /* For any supported protocol we have enough payload */
+
+ debug("Setting WSI_PARSING_COMPLETE\n");
+ wsi->parser_state = WSI_PARSING_COMPLETE;
+ break;
+
+ case WSI_INIT_TOKEN_MUXURL:
+ wsi->parser_state = WSI_TOKEN_MUXURL;
+ wsi->current_alloc_len = LWS_INITIAL_HDR_ALLOC;
+
+ wsi->utf8_token[wsi->parser_state].token =
+ malloc(wsi->current_alloc_len);
+ wsi->utf8_token[wsi->parser_state].token_len = 0;
+ break;
+
+ /* collecting and checking a name part */
+ case WSI_TOKEN_NAME_PART:
+ debug("WSI_TOKEN_NAME_PART '%c'\n", c);
+
+ if (wsi->name_buffer_pos == sizeof(wsi->name_buffer) - 1) {
+ /* name bigger than we can handle, skip until next */
+ wsi->parser_state = WSI_TOKEN_SKIPPING;
+ break;
+ }
+ wsi->name_buffer[wsi->name_buffer_pos++] = c;
+ wsi->name_buffer[wsi->name_buffer_pos] = '\0';
+
+ for (n = 0; n < WSI_TOKEN_COUNT; n++) {
+ if (wsi->name_buffer_pos != lws_tokens[n].token_len)
+ continue;
+ if (strcasecmp(lws_tokens[n].token, wsi->name_buffer))
+ continue;
+ debug("known hdr '%s'\n", wsi->name_buffer);
+
+ /*
+ * WSORIGIN is protocol equiv to ORIGIN,
+ * JWebSocket likes to send it, map to ORIGIN
+ */
+ if (n == WSI_TOKEN_SWORIGIN)
+ n = WSI_TOKEN_ORIGIN;
+
+ wsi->parser_state = WSI_TOKEN_GET_URI + n;
+
+ n = WSI_TOKEN_COUNT;
+
+ /* If the header has been seen already, just append */
+ if (wsi->utf8_token[wsi->parser_state].token)
+ continue;
+
+ wsi->current_alloc_len = LWS_INITIAL_HDR_ALLOC;
+ wsi->utf8_token[wsi->parser_state].token =
+ malloc(wsi->current_alloc_len);
+ wsi->utf8_token[wsi->parser_state].token_len = 0;
+ }
+
+ /* colon delimiter means we just don't know this name */
+
+ if (wsi->parser_state == WSI_TOKEN_NAME_PART && c == ':') {
+ debug("skipping unknown header '%s'\n",
+ wsi->name_buffer);
+ wsi->parser_state = WSI_TOKEN_SKIPPING;
+ break;
+ }
+
+ if (wsi->parser_state != WSI_TOKEN_CHALLENGE)
+ break;
+
+ /* don't look for payload when it can just be http headers */
+
+ if (!wsi->utf8_token[WSI_TOKEN_UPGRADE].token_len) {
+ /* they're HTTP headers, not websocket upgrade! */
+ debug("Setting WSI_PARSING_COMPLETE "
+ "from http headers\n");
+ wsi->parser_state = WSI_PARSING_COMPLETE;
+ }
+
+ /* 04 version has no packet content after end of hdrs */
+
+ if (wsi->utf8_token[WSI_TOKEN_VERSION].token_len &&
+ atoi(wsi->utf8_token[WSI_TOKEN_VERSION].token) >= 4) {
+ debug("04 header completed\n");
+ wsi->parser_state = WSI_PARSING_COMPLETE;
+ wsi->utf8_token[WSI_TOKEN_CHALLENGE].token_len = 0;
+ free(wsi->utf8_token[WSI_TOKEN_CHALLENGE].token);
+ wsi->utf8_token[WSI_TOKEN_CHALLENGE].token = NULL;
+ }
+
+ /* client parser? */
+
+ if (wsi->ietf_spec_revision >= 4) {
+ debug("04 header completed\n");
+ wsi->parser_state = WSI_PARSING_COMPLETE;
+ }
+
+ break;
+
+ /* skipping arg part of a name we didn't recognize */
+ case WSI_TOKEN_SKIPPING:
+ debug("WSI_TOKEN_SKIPPING '%c'\n", c);
+ if (c == '\x0d')
+ wsi->parser_state = WSI_TOKEN_SKIPPING_SAW_CR;
+ break;
+ case WSI_TOKEN_SKIPPING_SAW_CR:
+ debug("WSI_TOKEN_SKIPPING_SAW_CR '%c'\n", c);
+ if (c == '\x0a')
+ wsi->parser_state = WSI_TOKEN_NAME_PART;
+ else
+ wsi->parser_state = WSI_TOKEN_SKIPPING;
+ wsi->name_buffer_pos = 0;
+ break;
+ /* we're done, ignore anything else */
+ case WSI_PARSING_COMPLETE:
+ debug("WSI_PARSING_COMPLETE '%c'\n", c);
+ break;
+
+ default: /* keep gcc happy */
+ break;
+ }
+
+ return 0;
+}
+
+unsigned char
+xor_no_mask(struct libwebsocket *wsi, unsigned char c)
+{
+ return c;
+}
+
+unsigned char
+xor_mask_04(struct libwebsocket *wsi, unsigned char c)
+{
+ c ^= wsi->masking_key_04[wsi->frame_mask_index++];
+ if (wsi->frame_mask_index == 20)
+ wsi->frame_mask_index = 0;
+
+ return c;
+}
+
+unsigned char
+xor_mask_05(struct libwebsocket *wsi, unsigned char c)
+{
+ return c ^ wsi->frame_masking_nonce_04[(wsi->frame_mask_index++) & 3];
+}
+
+
+
+int
+libwebsocket_rx_sm(struct libwebsocket *wsi, unsigned char c)
+{
+ int n;
+ unsigned char buf[20 + 4];
+ struct lws_tokens eff_buf;
+ int handled;
+ int m;
+
+#if 0
+ fprintf(stderr, "RX: %02X ", c);
+#endif
+
+ switch (wsi->lws_rx_parse_state) {
+ case LWS_RXPS_NEW:
+
+ switch (wsi->ietf_spec_revision) {
+ /* Firefox 4.0b6 likes this as of 30 Oct 2010 */
+ case 0:
+ if (c == 0xff)
+ wsi->lws_rx_parse_state = LWS_RXPS_SEEN_76_FF;
+ if (c == 0) {
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_EAT_UNTIL_76_FF;
+ wsi->rx_user_buffer_head = 0;
+ }
+ break;
+ case 4:
+ case 5:
+ case 6:
+ wsi->all_zero_nonce = 1;
+ wsi->frame_masking_nonce_04[0] = c;
+ if (c)
+ wsi->all_zero_nonce = 0;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_MASK_NONCE_1;
+ break;
+ case 7:
+ case 8:
+ case 13:
+ /*
+ * no prepended frame key any more
+ */
+ wsi->all_zero_nonce = 1;
+ goto handle_first;
+
+ default:
+ fprintf(stderr, "libwebsocket_rx_sm doesn't know "
+ "about spec version %d\n", wsi->ietf_spec_revision);
+ break;
+ }
+ break;
+ case LWS_RXPS_04_MASK_NONCE_1:
+ wsi->frame_masking_nonce_04[1] = c;
+ if (c)
+ wsi->all_zero_nonce = 0;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_MASK_NONCE_2;
+ break;
+ case LWS_RXPS_04_MASK_NONCE_2:
+ wsi->frame_masking_nonce_04[2] = c;
+ if (c)
+ wsi->all_zero_nonce = 0;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_MASK_NONCE_3;
+ break;
+ case LWS_RXPS_04_MASK_NONCE_3:
+ wsi->frame_masking_nonce_04[3] = c;
+ if (c)
+ wsi->all_zero_nonce = 0;
+
+ if (wsi->protocol->owning_server->options &
+ LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK)
+ goto post_mask;
+
+ if (wsi->ietf_spec_revision > 4)
+ goto post_sha1;
+
+ /*
+ * we are able to compute the frame key now
+ * it's a SHA1 of ( frame nonce we were just sent, concatenated
+ * with the connection masking key we computed at handshake
+ * time ) -- yeah every frame from the client invokes a SHA1
+ * for no real reason so much for lightweight.
+ */
+
+ buf[0] = wsi->frame_masking_nonce_04[0];
+ buf[1] = wsi->frame_masking_nonce_04[1];
+ buf[2] = wsi->frame_masking_nonce_04[2];
+ buf[3] = wsi->frame_masking_nonce_04[3];
+
+ memcpy(buf + 4, wsi->masking_key_04, 20);
+
+ /*
+ * wsi->frame_mask_04 will be our recirculating 20-byte XOR key
+ * for this frame
+ */
+
+ SHA1((unsigned char *)buf, 4 + 20, wsi->frame_mask_04);
+
+post_sha1:
+
+ /*
+ * start from the zero'th byte in the XOR key buffer since
+ * this is the start of a frame with a new key
+ */
+
+ wsi->frame_mask_index = 0;
+
+post_mask:
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_1;
+ break;
+
+ /*
+ * 04 logical framing from the spec (all this is masked when incoming
+ * and has to be unmasked)
+ *
+ * We ignore the possibility of extension data because we don't
+ * negotiate any extensions at the moment.
+ *
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-------+-+-------------+-------------------------------+
+ * |F|R|R|R| opcode|R| Payload len | Extended payload length |
+ * |I|S|S|S| (4) |S| (7) | (16/63) |
+ * |N|V|V|V| |V| | (if payload len==126/127) |
+ * | |1|2|3| |4| | |
+ * +-+-+-+-+-------+-+-------------+ - - - - - - - - - - - - - - - +
+ * | Extended payload length continued, if payload len == 127 |
+ * + - - - - - - - - - - - - - - - +-------------------------------+
+ * | | Extension data |
+ * +-------------------------------+ - - - - - - - - - - - - - - - +
+ * : :
+ * +---------------------------------------------------------------+
+ * : Application data :
+ * +---------------------------------------------------------------+
+ *
+ * We pass payload through to userland as soon as we get it, ignoring
+ * FIN. It's up to userland to buffer it up if it wants to see a
+ * whole unfragmented block of the original size (which may be up to
+ * 2^63 long!)
+ */
+
+ case LWS_RXPS_04_FRAME_HDR_1:
+handle_first:
+
+ /*
+ * 04 spec defines the opcode like this: (1, 2, and 3 are
+ * "control frame" opcodes which may not be fragmented or
+ * have size larger than 126)
+ *
+ * frame-opcode =
+ * %x0 ; continuation frame
+ * / %x1 ; connection close
+ * / %x2 ; ping
+ * / %x3 ; pong
+ * / %x4 ; text frame
+ * / %x5 ; binary frame
+ * / %x6-F ; reserved
+ *
+ * FIN (b7)
+ */
+
+ if (wsi->ietf_spec_revision < 7)
+ c = wsi->xor_mask(wsi, c);
+
+ if (c & 0x70)
+ fprintf(stderr,
+ "Frame has unknown extension bits set 1 %02X\n", c);
+
+ /* translate all incoming opcodes into v7+ map */
+ if (wsi->ietf_spec_revision < 7)
+ switch (c & 0xf) {
+ case LWS_WS_OPCODE_04__CONTINUATION:
+ wsi->opcode = LWS_WS_OPCODE_07__CONTINUATION;
+ break;
+ case LWS_WS_OPCODE_04__CLOSE:
+ wsi->opcode = LWS_WS_OPCODE_07__CLOSE;
+ break;
+ case LWS_WS_OPCODE_04__PING:
+ wsi->opcode = LWS_WS_OPCODE_07__PING;
+ break;
+ case LWS_WS_OPCODE_04__PONG:
+ wsi->opcode = LWS_WS_OPCODE_07__PONG;
+ break;
+ case LWS_WS_OPCODE_04__TEXT_FRAME:
+ wsi->opcode = LWS_WS_OPCODE_07__TEXT_FRAME;
+ break;
+ case LWS_WS_OPCODE_04__BINARY_FRAME:
+ wsi->opcode = LWS_WS_OPCODE_07__BINARY_FRAME;
+ break;
+ default:
+ fprintf(stderr, "reserved opcodes not "
+ "usable pre v7 protocol\n");
+ return -1;
+ }
+ else
+ wsi->opcode = c & 0xf;
+
+ wsi->final = !!((c >> 7) & 1);
+
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN:
+
+ if (wsi->ietf_spec_revision < 7)
+ c = wsi->xor_mask(wsi, c);
+
+ if ((c & 0x80) && wsi->ietf_spec_revision < 7) {
+ fprintf(stderr, "Frame has extensions "
+ "set illegally 2\n");
+ /* kill the connection */
+ return -1;
+ }
+
+ wsi->this_frame_masked = !!(c & 0x80);
+
+ switch (c & 0x7f) {
+ case 126:
+ /* control frames are not allowed to have big lengths */
+ if (wsi->opcode & 8)
+ goto illegal_ctl_length;
+
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN16_2;
+ break;
+ case 127:
+ /* control frames are not allowed to have big lengths */
+ if (wsi->opcode & 8)
+ goto illegal_ctl_length;
+
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_8;
+ break;
+ default:
+ wsi->rx_packet_length = c & 0x7f;
+ if (wsi->this_frame_masked)
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_07_COLLECT_FRAME_KEY_1;
+ else
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
+ break;
+ }
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN16_2:
+ if (wsi->ietf_spec_revision < 7)
+ c = wsi->xor_mask(wsi, c);
+
+ wsi->rx_packet_length = c << 8;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN16_1;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN16_1:
+ if (wsi->ietf_spec_revision < 7)
+ c = wsi->xor_mask(wsi, c);
+
+ wsi->rx_packet_length |= c;
+ if (wsi->this_frame_masked)
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_07_COLLECT_FRAME_KEY_1;
+ else
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_8:
+ if (wsi->ietf_spec_revision < 7)
+ c = wsi->xor_mask(wsi, c);
+ if (c & 0x80) {
+ fprintf(stderr, "b63 of length must be zero\n");
+ /* kill the connection */
+ return -1;
+ }
+#if defined __LP64__
+ wsi->rx_packet_length = ((size_t)c) << 56;
+#else
+ wsi->rx_packet_length = 0;
+#endif
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_7;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_7:
+ if (wsi->ietf_spec_revision < 7)
+ c = wsi->xor_mask(wsi, c);
+#if defined __LP64__
+ wsi->rx_packet_length |= ((size_t)c) << 48;
+#endif
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_6;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_6:
+ if (wsi->ietf_spec_revision < 7)
+ c = wsi->xor_mask(wsi, c);
+#if defined __LP64__
+ wsi->rx_packet_length |= ((size_t)c) << 40;
+#endif
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_5;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_5:
+ if (wsi->ietf_spec_revision < 7)
+ c = wsi->xor_mask(wsi, c);
+#if defined __LP64__
+ wsi->rx_packet_length |= ((size_t)c) << 32;
+#endif
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_4;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_4:
+ if (wsi->ietf_spec_revision < 7)
+ c = wsi->xor_mask(wsi, c);
+ wsi->rx_packet_length |= ((size_t)c) << 24;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_3;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_3:
+ if (wsi->ietf_spec_revision < 7)
+ c = wsi->xor_mask(wsi, c);
+ wsi->rx_packet_length |= ((size_t)c) << 16;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_2;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_2:
+ if (wsi->ietf_spec_revision < 7)
+ c = wsi->xor_mask(wsi, c);
+ wsi->rx_packet_length |= ((size_t)c) << 8;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_1;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_1:
+ if (wsi->ietf_spec_revision < 7)
+ c = wsi->xor_mask(wsi, c);
+ wsi->rx_packet_length |= ((size_t)c);
+ if (wsi->this_frame_masked)
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_07_COLLECT_FRAME_KEY_1;
+ else
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
+ break;
+
+ case LWS_RXPS_EAT_UNTIL_76_FF:
+ if (c == 0xff) {
+ wsi->lws_rx_parse_state = LWS_RXPS_NEW;
+ goto issue;
+ }
+ wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING +
+ (wsi->rx_user_buffer_head++)] = c;
+
+ if (wsi->rx_user_buffer_head != MAX_USER_RX_BUFFER)
+ break;
+issue:
+ if (wsi->protocol->callback)
+ wsi->protocol->callback(wsi->protocol->owning_server,
+ wsi, LWS_CALLBACK_RECEIVE,
+ wsi->user_space,
+ &wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
+ wsi->rx_user_buffer_head);
+ wsi->rx_user_buffer_head = 0;
+ break;
+ case LWS_RXPS_SEEN_76_FF:
+ if (c)
+ break;
+
+ debug("Seen that client is requesting "
+ "a v76 close, sending ack\n");
+ buf[0] = 0xff;
+ buf[1] = 0;
+ n = libwebsocket_write(wsi, buf, 2, LWS_WRITE_HTTP);
+ if (n < 0) {
+ fprintf(stderr, "ERROR writing to socket");
+ return -1;
+ }
+ debug(" v76 close ack sent, server closing skt\n");
+ /* returning < 0 will get it closed in parent */
+ return -1;
+
+ case LWS_RXPS_PULLING_76_LENGTH:
+ break;
+
+
+ case LWS_RXPS_07_COLLECT_FRAME_KEY_1:
+ wsi->frame_masking_nonce_04[0] = c;
+ if (c)
+ wsi->all_zero_nonce = 0;
+ wsi->lws_rx_parse_state = LWS_RXPS_07_COLLECT_FRAME_KEY_2;
+ break;
+
+ case LWS_RXPS_07_COLLECT_FRAME_KEY_2:
+ wsi->frame_masking_nonce_04[1] = c;
+ if (c)
+ wsi->all_zero_nonce = 0;
+ wsi->lws_rx_parse_state = LWS_RXPS_07_COLLECT_FRAME_KEY_3;
+ break;
+
+ case LWS_RXPS_07_COLLECT_FRAME_KEY_3:
+ wsi->frame_masking_nonce_04[2] = c;
+ if (c)
+ wsi->all_zero_nonce = 0;
+ wsi->lws_rx_parse_state = LWS_RXPS_07_COLLECT_FRAME_KEY_4;
+ break;
+
+ case LWS_RXPS_07_COLLECT_FRAME_KEY_4:
+ wsi->frame_masking_nonce_04[3] = c;
+ if (c)
+ wsi->all_zero_nonce = 0;
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
+ wsi->frame_mask_index = 0;
+ break;
+
+
+ case LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED:
+ if (wsi->ietf_spec_revision < 4 ||
+ (wsi->all_zero_nonce && wsi->ietf_spec_revision >= 5))
+ wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING +
+ (wsi->rx_user_buffer_head++)] = c;
+ else
+ wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING +
+ (wsi->rx_user_buffer_head++)] =
+ wsi->xor_mask(wsi, c);
+
+ if (--wsi->rx_packet_length == 0) {
+ wsi->lws_rx_parse_state = LWS_RXPS_NEW;
+ goto spill;
+ }
+ if (wsi->rx_user_buffer_head != MAX_USER_RX_BUFFER)
+ break;
+spill:
+ /*
+ * is this frame a control packet we should take care of at this
+ * layer? If so service it and hide it from the user callback
+ */
+
+ debug("spill on %s\n", wsi->protocol->name);
+
+ switch (wsi->opcode) {
+ case LWS_WS_OPCODE_07__CLOSE:
+ /* is this an acknowledgement of our close? */
+ if (wsi->state == WSI_STATE_AWAITING_CLOSE_ACK) {
+ /*
+ * fine he has told us he is closing too, let's
+ * finish our close
+ */
+ debug("seen client close ack\n");
+ return -1;
+ }
+ debug("server sees client close packet\n");
+ /* parrot the close packet payload back */
+ n = libwebsocket_write(wsi, (unsigned char *)
+ &wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
+ wsi->rx_user_buffer_head, LWS_WRITE_CLOSE);
+ wsi->state = WSI_STATE_RETURNED_CLOSE_ALREADY;
+ /* close the connection */
+ return -1;
+
+ case LWS_WS_OPCODE_07__PING:
+ /* parrot the ping packet payload back as a pong */
+ n = libwebsocket_write(wsi, (unsigned char *)
+ &wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
+ wsi->rx_user_buffer_head, LWS_WRITE_PONG);
+ /* ... then just drop it */
+ wsi->rx_user_buffer_head = 0;
+ return 0;
+
+ case LWS_WS_OPCODE_07__PONG:
+ /* keep the statistics... */
+ wsi->pings_vs_pongs--;
+ /* ... then just drop it */
+ wsi->rx_user_buffer_head = 0;
+ return 0;
+
+ case LWS_WS_OPCODE_07__TEXT_FRAME:
+ case LWS_WS_OPCODE_07__BINARY_FRAME:
+ break;
+
+ default:
+
+ debug("passing opcode %x up to exts\n", wsi->opcode);
+
+ /*
+ * It's something special we can't understand here.
+ * Pass the payload up to the extension's parsing
+ * state machine.
+ */
+
+ eff_buf.token = &wsi->rx_user_buffer[
+ LWS_SEND_BUFFER_PRE_PADDING];
+ eff_buf.token_len = wsi->rx_user_buffer_head;
+
+ handled = 0;
+ for (n = 0; n < wsi->count_active_extensions; n++) {
+ m = wsi->active_extensions[n]->callback(
+ wsi->protocol->owning_server,
+ wsi->active_extensions[n], wsi,
+ LWS_EXT_CALLBACK_EXTENDED_PAYLOAD_RX,
+ wsi->active_extensions_user[n],
+ &eff_buf, 0);
+ if (m)
+ handled = 1;
+ }
+
+ if (!handled)
+ fprintf(stderr, "Unhandled extended opcode "
+ "0x%x - ignoring frame\n", wsi->opcode);
+
+ wsi->rx_user_buffer_head = 0;
+ return 0;
+ }
+
+ /*
+ * No it's real payload, pass it up to the user callback.
+ * It's nicely buffered with the pre-padding taken care of
+ * so it can be sent straight out again using libwebsocket_write
+ */
+
+ wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING +
+ wsi->rx_user_buffer_head] = '\0';
+
+ if (wsi->protocol->callback)
+ wsi->protocol->callback(wsi->protocol->owning_server,
+ wsi, LWS_CALLBACK_RECEIVE,
+ wsi->user_space,
+ &wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
+ wsi->rx_user_buffer_head);
+ else
+ fprintf(stderr, "No callback on payload spill!\n");
+
+ wsi->rx_user_buffer_head = 0;
+ break;
+ }
+
+ return 0;
+
+illegal_ctl_length:
+
+ fprintf(stderr, "Control frame asking for "
+ "extended length is illegal\n");
+ /* kill the connection */
+ return -1;
+}
+
+
+int libwebsocket_client_rx_sm(struct libwebsocket *wsi, unsigned char c)
+{
+ int n;
+ unsigned char buf[20 + 4];
+ int callback_action = LWS_CALLBACK_CLIENT_RECEIVE;
+ int handled;
+ struct lws_tokens eff_buf;
+ int m;
+
+ debug(" CRX: %02X %d\n", c, wsi->lws_rx_parse_state);
+
+ switch (wsi->lws_rx_parse_state) {
+ case LWS_RXPS_NEW:
+
+ switch (wsi->ietf_spec_revision) {
+ /* Firefox 4.0b6 likes this as of 30 Oct */
+ case 0:
+ if (c == 0xff)
+ wsi->lws_rx_parse_state = LWS_RXPS_SEEN_76_FF;
+ if (c == 0) {
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_EAT_UNTIL_76_FF;
+ wsi->rx_user_buffer_head = 0;
+ }
+ break;
+ case 4:
+ case 5:
+ case 6:
+ case 7:
+ case 8:
+ case 13:
+ /*
+ * 04 logical framing from the spec (all this is masked when
+ * incoming and has to be unmasked)
+ *
+ * We ignore the possibility of extension data because we don't
+ * negotiate any extensions at the moment.
+ *
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-------+-+-------------+-------------------------------+
+ * |F|R|R|R| opcode|R| Payload len | Extended payload length |
+ * |I|S|S|S| (4) |S| (7) | (16/63) |
+ * |N|V|V|V| |V| | (if payload len==126/127) |
+ * | |1|2|3| |4| | |
+ * +-+-+-+-+-------+-+-------------+ - - - - - - - - - - - - - - - +
+ * | Extended payload length continued, if payload len == 127 |
+ * + - - - - - - - - - - - - - - - +-------------------------------+
+ * | | Extension data |
+ * +-------------------------------+ - - - - - - - - - - - - - - - +
+ * : :
+ * +---------------------------------------------------------------+
+ * : Application data :
+ * +---------------------------------------------------------------+
+ *
+ * We pass payload through to userland as soon as we get it, ignoring
+ * FIN. It's up to userland to buffer it up if it wants to see a
+ * whole unfragmented block of the original size (which may be up to
+ * 2^63 long!)
+ *
+ * Notice in v7 RSV4 is set to indicate 32-bit frame key is coming in
+ * after length, unlike extension data which is now deprecated, this
+ * does not impact the payload length calculation.
+ */
+
+ /*
+ * 04 spec defines the opcode like this: (1, 2, and 3 are
+ * "control frame" opcodes which may not be fragmented or
+ * have size larger than 126)
+ *
+ * frame-opcode =
+ * %x0 ; continuation frame
+ * / %x1 ; connection close
+ * / %x2 ; ping
+ * / %x3 ; pong
+ * / %x4 ; text frame
+ * / %x5 ; binary frame
+ * / %x6-F ; reserved
+ *
+ * FIN (b7)
+ */
+
+ if (c & 0x70)
+ fprintf(stderr, "Frame has unknown extension "
+ "bits set on first framing byte %02X\n", c);
+
+ if (wsi->ietf_spec_revision < 7)
+ switch (c & 0xf) {
+ case LWS_WS_OPCODE_04__CONTINUATION:
+ wsi->opcode =
+ LWS_WS_OPCODE_07__CONTINUATION;
+ break;
+ case LWS_WS_OPCODE_04__CLOSE:
+ wsi->opcode = LWS_WS_OPCODE_07__CLOSE;
+ break;
+ case LWS_WS_OPCODE_04__PING:
+ wsi->opcode = LWS_WS_OPCODE_07__PING;
+ break;
+ case LWS_WS_OPCODE_04__PONG:
+ wsi->opcode = LWS_WS_OPCODE_07__PONG;
+ break;
+ case LWS_WS_OPCODE_04__TEXT_FRAME:
+ wsi->opcode =
+ LWS_WS_OPCODE_07__TEXT_FRAME;
+ break;
+ case LWS_WS_OPCODE_04__BINARY_FRAME:
+ wsi->opcode =
+ LWS_WS_OPCODE_07__BINARY_FRAME;
+ break;
+ default:
+ fprintf(stderr, "reserved opcodes not "
+ "usable pre v7 protocol\n");
+ return -1;
+ }
+ else
+ wsi->opcode = c & 0xf;
+
+ wsi->final = !!((c >> 7) & 1);
+
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN;
+ break;
+
+ default:
+ fprintf(stderr, "client_rx_sm doesn't know how "
+ "to handle spec version %02d\n",
+ wsi->ietf_spec_revision);
+ break;
+ }
+ break;
+
+
+ case LWS_RXPS_04_FRAME_HDR_LEN:
+
+ if ((c & 0x80) && wsi->ietf_spec_revision < 7) {
+ fprintf(stderr,
+ "Frame has extensions set illegally 4\n");
+ /* kill the connection */
+ return -1;
+ }
+
+ wsi->this_frame_masked = !!(c & 0x80);
+
+ switch (c & 0x7f) {
+ case 126:
+ /* control frames are not allowed to have big lengths */
+ if (wsi->opcode & 8)
+ goto illegal_ctl_length;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN16_2;
+ break;
+ case 127:
+ /* control frames are not allowed to have big lengths */
+ if (wsi->opcode & 8)
+ goto illegal_ctl_length;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_8;
+ break;
+ default:
+ wsi->rx_packet_length = c;
+ if (wsi->this_frame_masked)
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_07_COLLECT_FRAME_KEY_1;
+ else {
+ if (c)
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
+ else {
+ wsi->lws_rx_parse_state = LWS_RXPS_NEW;
+ goto spill;
+ }
+ }
+ break;
+ }
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN16_2:
+ wsi->rx_packet_length = c << 8;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN16_1;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN16_1:
+ wsi->rx_packet_length |= c;
+ if (wsi->this_frame_masked)
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_07_COLLECT_FRAME_KEY_1;
+ else {
+ if (wsi->rx_packet_length)
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
+ else {
+ wsi->lws_rx_parse_state = LWS_RXPS_NEW;
+ goto spill;
+ }
+ }
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_8:
+ if (c & 0x80) {
+ fprintf(stderr, "b63 of length must be zero\n");
+ /* kill the connection */
+ return -1;
+ }
+#if defined __LP64__
+ wsi->rx_packet_length = ((size_t)c) << 56;
+#else
+ wsi->rx_packet_length = 0;
+#endif
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_7;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_7:
+#if defined __LP64__
+ wsi->rx_packet_length |= ((size_t)c) << 48;
+#endif
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_6;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_6:
+#if defined __LP64__
+ wsi->rx_packet_length |= ((size_t)c) << 40;
+#endif
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_5;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_5:
+#if defined __LP64__
+ wsi->rx_packet_length |= ((size_t)c) << 32;
+#endif
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_4;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_4:
+ wsi->rx_packet_length |= ((size_t)c) << 24;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_3;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_3:
+ wsi->rx_packet_length |= ((size_t)c) << 16;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_2;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_2:
+ wsi->rx_packet_length |= ((size_t)c) << 8;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_1;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_1:
+ wsi->rx_packet_length |= (size_t)c;
+ if (wsi->this_frame_masked)
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_07_COLLECT_FRAME_KEY_1;
+ else {
+ if (wsi->rx_packet_length)
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
+ else {
+ wsi->lws_rx_parse_state = LWS_RXPS_NEW;
+ goto spill;
+ }
+ }
+ break;
+
+ case LWS_RXPS_07_COLLECT_FRAME_KEY_1:
+ wsi->frame_masking_nonce_04[0] = c;
+ if (c)
+ wsi->all_zero_nonce = 0;
+ wsi->lws_rx_parse_state = LWS_RXPS_07_COLLECT_FRAME_KEY_2;
+ break;
+
+ case LWS_RXPS_07_COLLECT_FRAME_KEY_2:
+ wsi->frame_masking_nonce_04[1] = c;
+ if (c)
+ wsi->all_zero_nonce = 0;
+ wsi->lws_rx_parse_state = LWS_RXPS_07_COLLECT_FRAME_KEY_3;
+ break;
+
+ case LWS_RXPS_07_COLLECT_FRAME_KEY_3:
+ wsi->frame_masking_nonce_04[2] = c;
+ if (c)
+ wsi->all_zero_nonce = 0;
+ wsi->lws_rx_parse_state = LWS_RXPS_07_COLLECT_FRAME_KEY_4;
+ break;
+
+ case LWS_RXPS_07_COLLECT_FRAME_KEY_4:
+ wsi->frame_masking_nonce_04[3] = c;
+ if (c)
+ wsi->all_zero_nonce = 0;
+
+ if (wsi->rx_packet_length)
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
+ else {
+ wsi->lws_rx_parse_state = LWS_RXPS_NEW;
+ goto spill;
+ }
+ break;
+
+ case LWS_RXPS_EAT_UNTIL_76_FF:
+ if (c == 0xff) {
+ wsi->lws_rx_parse_state = LWS_RXPS_NEW;
+ goto issue;
+ }
+ wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING +
+ (wsi->rx_user_buffer_head++)] = c;
+
+ if (wsi->rx_user_buffer_head != MAX_USER_RX_BUFFER)
+ break;
+issue:
+ if (wsi->protocol->callback)
+ wsi->protocol->callback(wsi->protocol->owning_server,
+ wsi,
+ LWS_CALLBACK_CLIENT_RECEIVE,
+ wsi->user_space,
+ &wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
+ wsi->rx_user_buffer_head);
+ wsi->rx_user_buffer_head = 0;
+ break;
+ case LWS_RXPS_SEEN_76_FF:
+ if (c)
+ break;
+
+ debug("Seen that client is requesting "
+ "a v76 close, sending ack\n");
+ buf[0] = 0xff;
+ buf[1] = 0;
+ n = libwebsocket_write(wsi, buf, 2, LWS_WRITE_HTTP);
+ if (n < 0) {
+ fprintf(stderr, "ERROR writing to socket");
+ return -1;
+ }
+ debug(" v76 close ack sent, server closing skt\n");
+ /* returning < 0 will get it closed in parent */
+ return -1;
+
+ case LWS_RXPS_PULLING_76_LENGTH:
+ break;
+
+ case LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED:
+ if ((!wsi->this_frame_masked) || wsi->all_zero_nonce)
+ wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING +
+ (wsi->rx_user_buffer_head++)] = c;
+ else
+ wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING +
+ (wsi->rx_user_buffer_head++)] =
+ wsi->xor_mask(wsi, c);
+
+ if (--wsi->rx_packet_length == 0) {
+ wsi->lws_rx_parse_state = LWS_RXPS_NEW;
+ goto spill;
+ }
+ if (wsi->rx_user_buffer_head != MAX_USER_RX_BUFFER)
+ break;
+spill:
+
+ handled = 0;
+
+ /*
+ * is this frame a control packet we should take care of at this
+ * layer? If so service it and hide it from the user callback
+ */
+
+ switch (wsi->opcode) {
+ case LWS_WS_OPCODE_07__CLOSE:
+ /* is this an acknowledgement of our close? */
+ if (wsi->state == WSI_STATE_AWAITING_CLOSE_ACK) {
+ /*
+ * fine he has told us he is closing too, let's
+ * finish our close
+ */
+ debug("seen server's close ack\n");
+ return -1;
+ }
+ debug("client sees server close packet len = %d\n", wsi->rx_user_buffer_head);
+ /* parrot the close packet payload back */
+ n = libwebsocket_write(wsi, (unsigned char *)
+ &wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
+ wsi->rx_user_buffer_head, LWS_WRITE_CLOSE);
+ debug("client writing close ack returned %d\n", n);
+ wsi->state = WSI_STATE_RETURNED_CLOSE_ALREADY;
+ /* close the connection */
+ return -1;
+
+ case LWS_WS_OPCODE_07__PING:
+ /* parrot the ping packet payload back as a pong*/
+ n = libwebsocket_write(wsi, (unsigned char *)
+ &wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
+ wsi->rx_user_buffer_head, LWS_WRITE_PONG);
+ handled = 1;
+ break;
+
+ case LWS_WS_OPCODE_07__PONG:
+ /* keep the statistics... */
+ wsi->pings_vs_pongs--;
+
+ /* issue it */
+ callback_action = LWS_CALLBACK_CLIENT_RECEIVE_PONG;
+ break;
+
+ case LWS_WS_OPCODE_07__CONTINUATION:
+ case LWS_WS_OPCODE_07__TEXT_FRAME:
+ case LWS_WS_OPCODE_07__BINARY_FRAME:
+ break;
+
+ default:
+
+ debug("Reserved opcode 0x%2X\n", wsi->opcode);
+ /*
+ * It's something special we can't understand here.
+ * Pass the payload up to the extension's parsing
+ * state machine.
+ */
+
+ eff_buf.token = &wsi->rx_user_buffer[
+ LWS_SEND_BUFFER_PRE_PADDING];
+ eff_buf.token_len = wsi->rx_user_buffer_head;
+
+ for (n = 0; n < wsi->count_active_extensions; n++) {
+ m = wsi->active_extensions[n]->callback(
+ wsi->protocol->owning_server,
+ wsi->active_extensions[n], wsi,
+ LWS_EXT_CALLBACK_EXTENDED_PAYLOAD_RX,
+ wsi->active_extensions_user[n],
+ &eff_buf, 0);
+ if (m)
+ handled = 1;
+ }
+
+ if (!handled) {
+ fprintf(stderr, "Unhandled extended opcode "
+ "0x%x - ignoring frame\n", wsi->opcode);
+ wsi->rx_user_buffer_head = 0;
+
+ return 0;
+ }
+
+ break;
+ }
+
+ /*
+ * No it's real payload, pass it up to the user callback.
+ * It's nicely buffered with the pre-padding taken care of
+ * so it can be sent straight out again using libwebsocket_write
+ */
+
+ if (!handled && wsi->protocol->callback)
+ wsi->protocol->callback(wsi->protocol->owning_server,
+ wsi, callback_action,
+ wsi->user_space,
+ &wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
+ wsi->rx_user_buffer_head);
+ wsi->rx_user_buffer_head = 0;
+ break;
+ default:
+ fprintf(stderr, "client rx illegal state\n");
+ return 1;
+ }
+
+ return 0;
+
+illegal_ctl_length:
+
+ fprintf(stderr, "Control frame asking for "
+ "extended length is illegal\n");
+ /* kill the connection */
+ return -1;
+
+}
+
+
+
+int libwebsocket_interpret_incoming_packet(struct libwebsocket *wsi,
+ unsigned char *buf, size_t len)
+{
+ int n;
+
+#ifdef DEBUG
+ fprintf(stderr, "received %d byte packet\n", (int)len);
+ for (n = 0; n < len; n++)
+ fprintf(stderr, "%02X ", buf[n]);
+ fprintf(stderr, "\n");
+#endif
+
+ /* let the rx protocol state machine have as much as it needs */
+
+ n = 0;
+ while (n < len)
+ if (libwebsocket_rx_sm(wsi, buf[n++]) < 0)
+ return -1;
+
+ return 0;
+}
+
+
+static int
+libwebsocket_0405_frame_mask_generate(struct libwebsocket *wsi)
+{
+ char buf[4 + 20];
+ int n;
+
+ /* fetch the per-frame nonce */
+
+ n = libwebsockets_get_random(wsi->protocol->owning_server,
+ wsi->frame_masking_nonce_04, 4);
+ if (n != 4) {
+ fprintf(stderr, "Unable to read from random device %s %d\n",
+ SYSTEM_RANDOM_FILEPATH, n);
+ return 1;
+ }
+
+ /* start masking from first byte of masking key buffer */
+ wsi->frame_mask_index = 0;
+
+ if (wsi->ietf_spec_revision != 4)
+ return 0;
+
+ /* 04 only does SHA-1 more complex key */
+
+ /*
+ * the frame key is the frame nonce (4 bytes) followed by the
+ * connection masking key, hashed by SHA1
+ */
+
+ memcpy(buf, wsi->frame_masking_nonce_04, 4);
+
+ memcpy(buf + 4, wsi->masking_key_04, 20);
+
+ /* concatenate the nonce with the connection key then hash it */
+
+ SHA1((unsigned char *)buf, 4 + 20, wsi->frame_mask_04);
+
+ return 0;
+}
+
+void lws_stderr_hexdump(unsigned char *buf, size_t len)
+{
+ int n;
+ int m;
+ int start;
+
+ fprintf(stderr, "\n");
+
+ for (n = 0; n < len;) {
+ start = n;
+
+ fprintf(stderr, "%04X: ", start);
+
+ for (m = 0; m < 16 && n < len; m++)
+ fprintf(stderr, "%02X ", buf[n++]);
+ while (m++ < 16)
+ fprintf(stderr, " ");
+
+ fprintf(stderr, " ");
+
+ for (m = 0; m < 16 && (start + m) < len; m++) {
+ if (buf[start + m] >= ' ' && buf[start + m] <= 127)
+ fprintf(stderr, "%c", buf[start + m]);
+ else
+ fprintf(stderr, ".");
+ }
+ while (m++ < 16)
+ fprintf(stderr, " ");
+
+ fprintf(stderr, "\n");
+ }
+ fprintf(stderr, "\n");
+}
+
+int lws_issue_raw(struct libwebsocket *wsi, unsigned char *buf, size_t len)
+{
+ int n;
+ int m;
+
+ /*
+ * one of the extensions is carrying our data itself? Like mux?
+ */
+
+ for (n = 0; n < wsi->count_active_extensions; n++) {
+ /*
+ * there can only be active extensions after handshake completed
+ * so we can rely on protocol being set already in here
+ */
+ m = wsi->active_extensions[n]->callback(
+ wsi->protocol->owning_server,
+ wsi->active_extensions[n], wsi,
+ LWS_EXT_CALLBACK_PACKET_TX_DO_SEND,
+ wsi->active_extensions_user[n], &buf, len);
+ if (m < 0) {
+ fprintf(stderr, "Extension reports fatal error\n");
+ return -1;
+ }
+ if (m) /* handled */ {
+/* fprintf(stderr, "ext sent it\n"); */
+ return 0;
+ }
+ }
+
+ if (!wsi->sock)
+ fprintf(stderr, "** error 0 sock but expected to send\n");
+
+ /*
+ * nope, send it on the socket directly
+ */
+
+#if 0
+ fprintf(stderr, " TX: ");
+ lws_stderr_hexdump(buf, len);
+#endif
+
+#ifdef LWS_OPENSSL_SUPPORT
+ if (wsi->ssl) {
+ n = SSL_write(wsi->ssl, buf, len);
+ if (n < 0) {
+ fprintf(stderr,
+ "ERROR writing to socket\n");
+ return -1;
+ }
+ } else {
+#endif
+ n = send(wsi->sock, buf, len, MSG_NOSIGNAL);
+ if (n < 0) {
+ fprintf(stderr,
+ "ERROR writing to socket\n");
+ return -1;
+ }
+#ifdef LWS_OPENSSL_SUPPORT
+ }
+#endif
+ return 0;
+}
+
+int
+lws_issue_raw_ext_access(struct libwebsocket *wsi,
+ unsigned char *buf, size_t len)
+{
+ int ret;
+ struct lws_tokens eff_buf;
+ int m;
+ int n;
+
+ eff_buf.token = (char *)buf;
+ eff_buf.token_len = len;
+
+ /*
+ * while we have original buf to spill ourselves, or extensions report
+ * more in their pipeline
+ */
+
+ ret = 1;
+ while (ret == 1) {
+
+ /* default to nobody has more to spill */
+
+ ret = 0;
+
+ /* show every extension the new incoming data */
+
+ for (n = 0; n < wsi->count_active_extensions; n++) {
+ m = wsi->active_extensions[n]->callback(
+ wsi->protocol->owning_server,
+ wsi->active_extensions[n], wsi,
+ LWS_EXT_CALLBACK_PACKET_TX_PRESEND,
+ wsi->active_extensions_user[n], &eff_buf, 0);
+ if (m < 0) {
+ fprintf(stderr, "Extension: fatal error\n");
+ return -1;
+ }
+ if (m)
+ /*
+ * at least one extension told us he has more
+ * to spill, so we will go around again after
+ */
+ ret = 1;
+ }
+
+ /* assuming they left us something to send, send it */
+
+ if (eff_buf.token_len)
+ if (lws_issue_raw(wsi, (unsigned char *)eff_buf.token,
+ eff_buf.token_len))
+ return -1;
+
+ /* we used up what we had */
+
+ eff_buf.token = NULL;
+ eff_buf.token_len = 0;
+
+ /*
+ * Did that leave the pipe choked?
+ */
+
+ if (!lws_send_pipe_choked(wsi))
+ /* no we could add more */
+ continue;
+
+ debug("choked\n");
+
+ /*
+ * Yes, he's choked. Don't spill the rest now get a callback
+ * when he is ready to send and take care of it there
+ */
+ libwebsocket_callback_on_writable(
+ wsi->protocol->owning_server, wsi);
+ wsi->extension_data_pending = 1;
+ ret = 0;
+ }
+
+ debug("written %d bytes to client\n", eff_buf.token_len);
+
+ return 0;
+}
+
+/**
+ * libwebsocket_write() - Apply protocol then write data to client
+ * @wsi: Websocket instance (available from user callback)
+ * @buf: The data to send. For data being sent on a websocket
+ * connection (ie, not default http), this buffer MUST have
+ * LWS_SEND_BUFFER_PRE_PADDING bytes valid BEFORE the pointer
+ * and an additional LWS_SEND_BUFFER_POST_PADDING bytes valid
+ * in the buffer after (buf + len). This is so the protocol
+ * header and trailer data can be added in-situ.
+ * @len: Count of the data bytes in the payload starting from buf
+ * @protocol: Use LWS_WRITE_HTTP to reply to an http connection, and one
+ * of LWS_WRITE_BINARY or LWS_WRITE_TEXT to send appropriate
+ * data on a websockets connection. Remember to allow the extra
+ * bytes before and after buf if LWS_WRITE_BINARY or LWS_WRITE_TEXT
+ * are used.
+ *
+ * This function provides the way to issue data back to the client
+ * for both http and websocket protocols.
+ *
+ * In the case of sending using websocket protocol, be sure to allocate
+ * valid storage before and after buf as explained above. This scheme
+ * allows maximum efficiency of sending data and protocol in a single
+ * packet while not burdening the user code with any protocol knowledge.
+ */
+
+int libwebsocket_write(struct libwebsocket *wsi, unsigned char *buf,
+ size_t len, enum libwebsocket_write_protocol protocol)
+{
+ int n;
+ int pre = 0;
+ int post = 0;
+ int shift = 7;
+ int masked7 = wsi->mode == LWS_CONNMODE_WS_CLIENT &&
+ wsi->xor_mask != xor_no_mask;
+ unsigned char *dropmask = NULL;
+ unsigned char is_masked_bit = 0;
+
+ if (len == 0 && protocol != LWS_WRITE_CLOSE) {
+ fprintf(stderr, "zero length libwebsocket_write attempt\n");
+ return 0;
+ }
+
+ if (protocol == LWS_WRITE_HTTP)
+ goto send_raw;
+
+ /* websocket protocol, either binary or text */
+
+ if (wsi->state != WSI_STATE_ESTABLISHED)
+ return -1;
+
+ switch (wsi->ietf_spec_revision) {
+ /* chrome likes this as of 30 Oct 2010 */
+ /* Firefox 4.0b6 likes this as of 30 Oct 2010 */
+ case 0:
+ if ((protocol & 0xf) == LWS_WRITE_BINARY) {
+ /* in binary mode we send 7-bit used length blocks */
+ pre = 1;
+ while (len & (127 << shift)) {
+ pre++;
+ shift += 7;
+ }
+ n = 0;
+ shift -= 7;
+ while (shift >= 0) {
+ if (shift)
+ buf[0 - pre + n] =
+ ((len >> shift) & 127) | 0x80;
+ else
+ buf[0 - pre + n] =
+ ((len >> shift) & 127);
+ n++;
+ shift -= 7;
+ }
+ break;
+ }
+
+ /* frame type = text, length-free spam mode */
+
+ pre = 1;
+ buf[-pre] = 0;
+ buf[len] = 0xff; /* EOT marker */
+ post = 1;
+ break;
+
+ case 7:
+ case 8:
+ case 13:
+ if (masked7) {
+ pre += 4;
+ dropmask = &buf[0 - pre];
+ is_masked_bit = 0x80;
+ }
+ /* fallthru */
+ case 4:
+ case 5:
+ case 6:
+ switch (protocol & 0xf) {
+ case LWS_WRITE_TEXT:
+ if (wsi->ietf_spec_revision < 7)
+ n = LWS_WS_OPCODE_04__TEXT_FRAME;
+ else
+ n = LWS_WS_OPCODE_07__TEXT_FRAME;
+ break;
+ case LWS_WRITE_BINARY:
+ if (wsi->ietf_spec_revision < 7)
+ n = LWS_WS_OPCODE_04__BINARY_FRAME;
+ else
+ n = LWS_WS_OPCODE_07__BINARY_FRAME;
+ break;
+ case LWS_WRITE_CONTINUATION:
+ if (wsi->ietf_spec_revision < 7)
+ n = LWS_WS_OPCODE_04__CONTINUATION;
+ else
+ n = LWS_WS_OPCODE_07__CONTINUATION;
+ break;
+
+ case LWS_WRITE_CLOSE:
+ if (wsi->ietf_spec_revision < 7)
+ n = LWS_WS_OPCODE_04__CLOSE;
+ else
+ n = LWS_WS_OPCODE_07__CLOSE;
+
+ /*
+ * v5 mandates the first byte of close packet
+ * in both client and server directions
+ */
+
+ switch (wsi->ietf_spec_revision) {
+ case 0:
+ case 4:
+ break;
+ case 5:
+ /* we can do this because we demand post-buf */
+
+ if (len < 1)
+ len = 1;
+
+ switch (wsi->mode) {
+ case LWS_CONNMODE_WS_SERVING:
+ /*
+ fprintf(stderr, "LWS_WRITE_CLOSE S\n");
+ */
+ buf[0] = 'S';
+ break;
+ case LWS_CONNMODE_WS_CLIENT:
+ /*
+ fprintf(stderr, "LWS_WRITE_CLOSE C\n");
+ */
+ buf[0] = 'C';
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ /*
+ * 06 has a 2-byte status code in network order
+ * we can do this because we demand post-buf
+ */
+
+ if (wsi->close_reason) {
+ /* reason codes count as data bytes */
+ buf -= 2;
+ buf[0] = wsi->close_reason >> 8;
+ buf[1] = wsi->close_reason;
+ len += 2;
+ }
+ break;
+ }
+ break;
+ case LWS_WRITE_PING:
+ if (wsi->ietf_spec_revision < 7)
+ n = LWS_WS_OPCODE_04__PING;
+ else
+ n = LWS_WS_OPCODE_07__PING;
+
+ wsi->pings_vs_pongs++;
+ break;
+ case LWS_WRITE_PONG:
+ if (wsi->ietf_spec_revision < 7)
+ n = LWS_WS_OPCODE_04__PONG;
+ else
+ n = LWS_WS_OPCODE_07__PONG;
+ break;
+ default:
+ fprintf(stderr, "libwebsocket_write: unknown write "
+ "opcode / protocol\n");
+ return -1;
+ }
+
+ if (!(protocol & LWS_WRITE_NO_FIN))
+ n |= 1 << 7;
+
+ if (len < 126) {
+ pre += 2;
+ buf[-pre] = n;
+ buf[-pre + 1] = len | is_masked_bit;
+ } else {
+ if (len < 65536) {
+ pre += 4;
+ buf[-pre] = n;
+ buf[-pre + 1] = 126 | is_masked_bit;
+ buf[-pre + 2] = len >> 8;
+ buf[-pre + 3] = len;
+ } else {
+ pre += 10;
+ buf[-pre] = n;
+ buf[-pre + 1] = 127 | is_masked_bit;
+#if defined __LP64__
+ buf[-pre + 2] = (len >> 56) & 0x7f;
+ buf[-pre + 3] = len >> 48;
+ buf[-pre + 4] = len >> 40;
+ buf[-pre + 5] = len >> 32;
+#else
+ buf[-pre + 2] = 0;
+ buf[-pre + 3] = 0;
+ buf[-pre + 4] = 0;
+ buf[-pre + 5] = 0;
+#endif
+ buf[-pre + 6] = len >> 24;
+ buf[-pre + 7] = len >> 16;
+ buf[-pre + 8] = len >> 8;
+ buf[-pre + 9] = len;
+ }
+ }
+ break;
+ }
+
+ /*
+ * Deal with masking if we are in client -> server direction and
+ * the protocol demands it
+ */
+
+ if (wsi->mode == LWS_CONNMODE_WS_CLIENT &&
+ wsi->ietf_spec_revision >= 4) {
+
+ /*
+ * this is only useful for security tests where it's required
+ * to control the raw packet payload content
+ */
+
+ if (!(protocol & LWS_WRITE_CLIENT_IGNORE_XOR_MASK) &&
+ wsi->xor_mask != xor_no_mask) {
+
+ if (libwebsocket_0405_frame_mask_generate(wsi)) {
+ fprintf(stderr, "libwebsocket_write: "
+ "frame mask generation failed\n");
+ return 1;
+ }
+
+
+ if (wsi->ietf_spec_revision < 7)
+ /*
+ * use the XOR masking against everything we
+ * send past the frame key
+ */
+ for (n = -pre; n < ((int)len + post); n++)
+ buf[n] = wsi->xor_mask(wsi, buf[n]);
+ else
+ /*
+ * in v7, just mask the payload
+ */
+ for (n = 0; n < (int)len; n++)
+ dropmask[n + 4] =
+ wsi->xor_mask(wsi, dropmask[n + 4]);
+
+
+ if (wsi->ietf_spec_revision < 7) {
+ /* make space for the frame nonce in clear */
+ pre += 4;
+
+ dropmask = &buf[0 - pre];
+ }
+
+ if (dropmask)
+ /* copy the frame nonce into place */
+ memcpy(dropmask,
+ wsi->frame_masking_nonce_04, 4);
+
+ } else {
+ if (wsi->ietf_spec_revision < 7) {
+
+ /* make space for the frame nonce in clear */
+ pre += 4;
+
+ buf[0 - pre] = 0;
+ buf[1 - pre] = 0;
+ buf[2 - pre] = 0;
+ buf[3 - pre] = 0;
+ } else {
+ if (dropmask && wsi->xor_mask != xor_no_mask) {
+ dropmask[0] = 0;
+ dropmask[1] = 0;
+ dropmask[2] = 0;
+ dropmask[3] = 0;
+ }
+ }
+ }
+
+ }
+
+send_raw:
+
+#if 0
+ fprintf(stderr, "send %ld: ", len + post);
+ for (n = -pre; n < ((int)len + post); n++)
+ fprintf(stderr, "%02X ", buf[n]);
+
+ fprintf(stderr, "\n");
+#endif
+
+ if (protocol == LWS_WRITE_HTTP) {
+ if (lws_issue_raw(wsi, (unsigned char *)buf - pre,
+ len + pre + post))
+ return -1;
+
+ return 0;
+ }
+
+ /*
+ * give any active extensions a chance to munge the buffer
+ * before send. We pass in a pointer to an lws_tokens struct
+ * prepared with the default buffer and content length that's in
+ * there. Rather than rewrite the default buffer, extensions
+ * that expect to grow the buffer can adapt .token to
+ * point to their own per-connection buffer in the extension
+ * user allocation. By default with no extensions or no
+ * extension callback handling, just the normal input buffer is
+ * used then so it is efficient.
+ *
+ * callback returns 1 in case it wants to spill more buffers
+ */
+
+ return lws_issue_raw_ext_access(wsi, buf - pre, len + pre + post);
+}
+
+
+/**
+ * libwebsockets_serve_http_file() - Send a file back to the client using http
+ * @wsi: Websocket instance (available from user callback)
+ * @file: The file to issue over http
+ * @content_type: The http content type, eg, text/html
+ *
+ * This function is intended to be called from the callback in response
+ * to http requests from the client. It allows the callback to issue
+ * local files down the http link in a single step.
+ */
+
+int libwebsockets_serve_http_file(struct libwebsocket *wsi, const char *file,
+ const char *content_type)
+{
+ int fd;
+ struct stat stat_buf;
+ char buf[512];
+ char *p = buf;
+ int n;
+
+#ifdef WIN32
+ fd = open(file, O_RDONLY | _O_BINARY);
+#else
+ fd = open(file, O_RDONLY);
+#endif
+ if (fd < 1) {
+ p += sprintf(p, "HTTP/1.0 400 Bad\x0d\x0a"
+ "Server: libwebsockets\x0d\x0a"
+ "\x0d\x0a"
+ );
+ libwebsocket_write(wsi, (unsigned char *)buf, p - buf,
+ LWS_WRITE_HTTP);
+
+ return -1;
+ }
+
+ fstat(fd, &stat_buf);
+ p += sprintf(p, "HTTP/1.0 200 OK\x0d\x0a"
+ "Server: libwebsockets\x0d\x0a"
+ "Content-Type: %s\x0d\x0a"
+ "Content-Length: %u\x0d\x0a"
+ "\x0d\x0a", content_type,
+ (unsigned int)stat_buf.st_size);
+
+ libwebsocket_write(wsi, (unsigned char *)buf, p - buf, LWS_WRITE_HTTP);
+
+ n = 1;
+ while (n > 0) {
+ n = read(fd, buf, 512);
+ if (n <= 0)
+ continue;
+ libwebsocket_write(wsi, (unsigned char *)buf, n,
+ LWS_WRITE_HTTP);
+ }
+
+ close(fd);
+
+ return 0;
+}
+
+
+/**
+ * libwebsockets_remaining_packet_payload() - Bytes to come before "overall"
+ * rx packet is complete
+ * @wsi: Websocket instance (available from user callback)
+ *
+ * This function is intended to be called from the callback if the
+ * user code is interested in "complete packets" from the client.
+ * libwebsockets just passes through payload as it comes and issues a buffer
+ * additionally when it hits a built-in limit. The LWS_CALLBACK_RECEIVE
+ * callback handler can use this API to find out if the buffer it has just
+ * been given is the last piece of a "complete packet" from the client --
+ * when that is the case libwebsockets_remaining_packet_payload() will return
+ * 0.
+ *
+ * Many protocols won't care becuse their packets are always small.
+ */
+
+size_t
+libwebsockets_remaining_packet_payload(struct libwebsocket *wsi)
+{
+ return wsi->rx_packet_length;
+}
--- /dev/null
+/*
+ * libwebsockets - small server side websockets and web server implementation
+ *
+ * Copyright (C) 2010 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#ifdef __MINGW64__
+#else
+#ifdef __MINGW32__
+#else
+#include <netdb.h>
+#endif
+#endif
+#include <stdarg.h>
+
+#include <sys/stat.h>
+
+#ifdef WIN32
+#ifdef __MINGW64__
+#else
+#ifdef __MINGW32__
+#else
+#include <time.h >
+#endif
+#endif
+#include <winsock2.h>
+#include <ws2ipdef.h>
+#include <windows.h>
+
+#else
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#ifndef LWS_NO_FORK
+#ifdef HAVE_SYS_PRCTL_H
+#include <sys/prctl.h>
+#endif
+#endif
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <arpa/inet.h>
+
+#include <poll.h>
+#include <sys/mman.h>
+#include <sys/time.h>
+
+#endif
+
+#ifdef LWS_OPENSSL_SUPPORT
+#include <openssl/ssl.h>
+#include <openssl/evp.h>
+#include <openssl/err.h>
+#include <openssl/md5.h>
+#include <openssl/sha.h>
+#endif
+
+
+#include "libwebsockets.h"
+
+#if 0
+#define DEBUG
+#endif
+
+#ifdef DEBUG
+#ifdef WIN32
+static
+#else
+static inline
+#endif
+void debug(const char *format, ...)
+{
+ va_list ap;
+ va_start(ap, format); vfprintf(stderr, format, ap); va_end(ap);
+}
+#else
+#ifdef WIN32
+static
+#else
+static inline
+#endif
+void debug(const char *format, ...)
+{
+}
+#endif
+
+
+/*
+ * Mac OSX as well as iOS do not define the MSG_NOSIGNAL flag,
+ * but happily have something equivalent in the SO_NOSIGPIPE flag.
+ */
+#ifdef __APPLE__
+#define MSG_NOSIGNAL SO_NOSIGPIPE
+#endif
+
+
+#define FD_HASHTABLE_MODULUS 32
+#define MAX_CLIENTS 100
+#define LWS_MAX_HEADER_NAME_LENGTH 64
+#define LWS_MAX_HEADER_LEN 4096
+#define LWS_INITIAL_HDR_ALLOC 256
+#define LWS_ADDITIONAL_HDR_ALLOC 64
+#define MAX_USER_RX_BUFFER 4096
+#define MAX_BROADCAST_PAYLOAD 2048
+#define LWS_MAX_PROTOCOLS 10
+#define LWS_MAX_EXTENSIONS_ACTIVE 10
+#define SPEC_LATEST_SUPPORTED 13
+
+#define MAX_WEBSOCKET_04_KEY_LEN 128
+#define SYSTEM_RANDOM_FILEPATH "/dev/urandom"
+
+enum lws_websocket_opcodes_04 {
+ LWS_WS_OPCODE_04__CONTINUATION = 0,
+ LWS_WS_OPCODE_04__CLOSE = 1,
+ LWS_WS_OPCODE_04__PING = 2,
+ LWS_WS_OPCODE_04__PONG = 3,
+ LWS_WS_OPCODE_04__TEXT_FRAME = 4,
+ LWS_WS_OPCODE_04__BINARY_FRAME = 5,
+
+ LWS_WS_OPCODE_04__RESERVED_6 = 6,
+ LWS_WS_OPCODE_04__RESERVED_7 = 7,
+ LWS_WS_OPCODE_04__RESERVED_8 = 8,
+ LWS_WS_OPCODE_04__RESERVED_9 = 9,
+ LWS_WS_OPCODE_04__RESERVED_A = 0xa,
+ LWS_WS_OPCODE_04__RESERVED_B = 0xb,
+ LWS_WS_OPCODE_04__RESERVED_C = 0xc,
+ LWS_WS_OPCODE_04__RESERVED_D = 0xd,
+ LWS_WS_OPCODE_04__RESERVED_E = 0xe,
+ LWS_WS_OPCODE_04__RESERVED_F = 0xf,
+};
+
+enum lws_websocket_opcodes_07 {
+ LWS_WS_OPCODE_07__CONTINUATION = 0,
+ LWS_WS_OPCODE_07__TEXT_FRAME = 1,
+ LWS_WS_OPCODE_07__BINARY_FRAME = 2,
+
+ LWS_WS_OPCODE_07__NOSPEC__MUX = 7,
+
+ /* control extensions 8+ */
+
+ LWS_WS_OPCODE_07__CLOSE = 8,
+ LWS_WS_OPCODE_07__PING = 9,
+ LWS_WS_OPCODE_07__PONG = 0xa,
+};
+
+
+enum lws_connection_states {
+ WSI_STATE_HTTP,
+ WSI_STATE_HTTP_HEADERS,
+ WSI_STATE_DEAD_SOCKET,
+ WSI_STATE_ESTABLISHED,
+ WSI_STATE_CLIENT_UNCONNECTED,
+ WSI_STATE_RETURNED_CLOSE_ALREADY,
+ WSI_STATE_AWAITING_CLOSE_ACK,
+};
+
+enum lws_rx_parse_state {
+ LWS_RXPS_NEW,
+
+ LWS_RXPS_SEEN_76_FF,
+ LWS_RXPS_PULLING_76_LENGTH,
+ LWS_RXPS_EAT_UNTIL_76_FF,
+
+ LWS_RXPS_04_MASK_NONCE_1,
+ LWS_RXPS_04_MASK_NONCE_2,
+ LWS_RXPS_04_MASK_NONCE_3,
+
+ LWS_RXPS_04_FRAME_HDR_1,
+ LWS_RXPS_04_FRAME_HDR_LEN,
+ LWS_RXPS_04_FRAME_HDR_LEN16_2,
+ LWS_RXPS_04_FRAME_HDR_LEN16_1,
+ LWS_RXPS_04_FRAME_HDR_LEN64_8,
+ LWS_RXPS_04_FRAME_HDR_LEN64_7,
+ LWS_RXPS_04_FRAME_HDR_LEN64_6,
+ LWS_RXPS_04_FRAME_HDR_LEN64_5,
+ LWS_RXPS_04_FRAME_HDR_LEN64_4,
+ LWS_RXPS_04_FRAME_HDR_LEN64_3,
+ LWS_RXPS_04_FRAME_HDR_LEN64_2,
+ LWS_RXPS_04_FRAME_HDR_LEN64_1,
+
+ LWS_RXPS_07_COLLECT_FRAME_KEY_1,
+ LWS_RXPS_07_COLLECT_FRAME_KEY_2,
+ LWS_RXPS_07_COLLECT_FRAME_KEY_3,
+ LWS_RXPS_07_COLLECT_FRAME_KEY_4,
+
+ LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED
+};
+
+
+enum connection_mode {
+ LWS_CONNMODE_WS_SERVING,
+ LWS_CONNMODE_WS_CLIENT,
+
+ /* transient modes */
+ LWS_CONNMODE_WS_CLIENT_WAITING_PROXY_REPLY,
+ LWS_CONNMODE_WS_CLIENT_ISSUE_HANDSHAKE,
+ LWS_CONNMODE_WS_CLIENT_WAITING_SERVER_REPLY,
+ LWS_CONNMODE_WS_CLIENT_WAITING_EXTENSION_CONNECT,
+ LWS_CONNMODE_WS_CLIENT_PENDING_CANDIDATE_CHILD,
+
+ /* special internal types */
+ LWS_CONNMODE_SERVER_LISTENER,
+ LWS_CONNMODE_BROADCAST_PROXY_LISTENER,
+ LWS_CONNMODE_BROADCAST_PROXY
+};
+
+
+#define LWS_FD_HASH(fd) ((fd ^ (fd >> 8) ^ (fd >> 16)) % FD_HASHTABLE_MODULUS)
+
+struct libwebsocket_fd_hashtable {
+ struct libwebsocket *wsi[MAX_CLIENTS + 1];
+ int length;
+};
+
+struct libwebsocket_protocols;
+
+struct libwebsocket_context {
+ struct libwebsocket_fd_hashtable fd_hashtable[FD_HASHTABLE_MODULUS];
+ struct pollfd fds[MAX_CLIENTS * FD_HASHTABLE_MODULUS + 1];
+ int fds_count;
+ int listen_port;
+ char http_proxy_address[256];
+ char canonical_hostname[1024];
+ unsigned int http_proxy_port;
+ unsigned int options;
+ unsigned long last_timeout_check_s;
+
+ int fd_random;
+
+#ifdef LWS_OPENSSL_SUPPORT
+ int use_ssl;
+ SSL_CTX *ssl_ctx;
+ SSL_CTX *ssl_client_ctx;
+#endif
+ struct libwebsocket_protocols *protocols;
+ int count_protocols;
+ struct libwebsocket_extension *extensions;
+};
+
+
+enum pending_timeout {
+ NO_PENDING_TIMEOUT = 0,
+ PENDING_TIMEOUT_AWAITING_PROXY_RESPONSE,
+ PENDING_TIMEOUT_ESTABLISH_WITH_SERVER,
+ PENDING_TIMEOUT_AWAITING_SERVER_RESPONSE,
+ PENDING_TIMEOUT_AWAITING_PING,
+ PENDING_TIMEOUT_CLOSE_ACK,
+ PENDING_TIMEOUT_AWAITING_EXTENSION_CONNECT_RESPONSE,
+};
+
+
+/*
+ * This is totally opaque to code using the library. It's exported as a
+ * forward-reference pointer-only declaration; the user can use the pointer with
+ * other APIs to get information out of it.
+ */
+
+struct libwebsocket {
+ const struct libwebsocket_protocols *protocol;
+ struct libwebsocket_extension *
+ active_extensions[LWS_MAX_EXTENSIONS_ACTIVE];
+ void *active_extensions_user[LWS_MAX_EXTENSIONS_ACTIVE];
+ int count_active_extensions;
+
+ enum lws_connection_states state;
+
+ char name_buffer[LWS_MAX_HEADER_NAME_LENGTH];
+ int name_buffer_pos;
+ int current_alloc_len;
+ enum lws_token_indexes parser_state;
+ struct lws_tokens utf8_token[WSI_TOKEN_COUNT];
+ int ietf_spec_revision;
+ char rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING + MAX_USER_RX_BUFFER +
+ LWS_SEND_BUFFER_POST_PADDING];
+ int rx_user_buffer_head;
+ enum libwebsocket_write_protocol rx_frame_type;
+ int protocol_index_for_broadcast_proxy;
+ enum pending_timeout pending_timeout;
+ unsigned long pending_timeout_limit;
+
+ int sock;
+
+ enum lws_rx_parse_state lws_rx_parse_state;
+ char extension_data_pending;
+ struct libwebsocket *candidate_children_list;
+ struct libwebsocket *extension_handles;
+
+ /* 04 protocol specific */
+
+ char key_b64[150];
+ unsigned char masking_key_04[20];
+ unsigned char frame_masking_nonce_04[4];
+ unsigned char frame_mask_04[20];
+ unsigned char frame_mask_index;
+ size_t rx_packet_length;
+ unsigned char opcode;
+ unsigned char final;
+
+ int pings_vs_pongs;
+ unsigned char (*xor_mask)(struct libwebsocket *, unsigned char);
+ char all_zero_nonce;
+
+ enum lws_close_status close_reason;
+
+ /* 07 specific */
+ char this_frame_masked;
+
+ /* client support */
+ char initial_handshake_hash_base64[30];
+ enum connection_mode mode;
+ char *c_path;
+ char *c_host;
+ char *c_origin;
+ char *c_protocol;
+ callback_function *c_callback;
+
+ char *c_address;
+ int c_port;
+
+
+#ifdef LWS_OPENSSL_SUPPORT
+ SSL *ssl;
+ BIO *client_bio;
+ int use_ssl;
+#endif
+
+ void *user_space;
+};
+
+extern int
+libwebsocket_client_rx_sm(struct libwebsocket *wsi, unsigned char c);
+
+extern int
+libwebsocket_parse(struct libwebsocket *wsi, unsigned char c);
+
+extern int
+libwebsocket_interpret_incoming_packet(struct libwebsocket *wsi,
+ unsigned char *buf, size_t len);
+
+extern int
+libwebsocket_read(struct libwebsocket_context *context,
+ struct libwebsocket *wsi,
+ unsigned char *buf, size_t len);
+
+extern int
+lws_b64_selftest(void);
+
+extern unsigned char
+xor_no_mask(struct libwebsocket *wsi, unsigned char c);
+
+extern unsigned char
+xor_mask_04(struct libwebsocket *wsi, unsigned char c);
+
+extern unsigned char
+xor_mask_05(struct libwebsocket *wsi, unsigned char c);
+
+extern struct libwebsocket *
+wsi_from_fd(struct libwebsocket_context *context, int fd);
+
+extern int
+insert_wsi(struct libwebsocket_context *context, struct libwebsocket *wsi);
+
+extern int
+delete_from_fd(struct libwebsocket_context *context, int fd);
+
+extern void
+libwebsocket_set_timeout(struct libwebsocket *wsi,
+ enum pending_timeout reason, int secs);
+
+extern int
+lws_issue_raw(struct libwebsocket *wsi, unsigned char *buf, size_t len);
+
+
+extern void
+libwebsocket_service_timeout_check(struct libwebsocket_context *context,
+ struct libwebsocket *wsi, unsigned int sec);
+
+extern struct libwebsocket *
+__libwebsocket_client_connect_2(struct libwebsocket_context *context,
+ struct libwebsocket *wsi);
+
+extern struct libwebsocket *
+libwebsocket_create_new_server_wsi(struct libwebsocket_context *context);
+
+extern char *
+libwebsockets_generate_client_handshake(struct libwebsocket_context *context,
+ struct libwebsocket *wsi, char *pkt);
+
+extern int
+lws_handle_POLLOUT_event(struct libwebsocket_context *context,
+ struct libwebsocket *wsi, struct pollfd *pollfd);
+
+extern int
+lws_any_extension_handled(struct libwebsocket_context *context,
+ struct libwebsocket *wsi,
+ enum libwebsocket_extension_callback_reasons r,
+ void *v, size_t len);
+
+extern void *
+lws_get_extension_user_matching_ext(struct libwebsocket *wsi,
+ struct libwebsocket_extension *ext);
+
+extern int
+lws_client_interpret_server_handshake(struct libwebsocket_context *context,
+ struct libwebsocket *wsi);
+
+extern int
+libwebsocket_rx_sm(struct libwebsocket *wsi, unsigned char c);
+
+extern int
+lws_issue_raw_ext_access(struct libwebsocket *wsi,
+ unsigned char *buf, size_t len);
+
+#ifndef LWS_OPENSSL_SUPPORT
+
+unsigned char *
+SHA1(const unsigned char *d, size_t n, unsigned char *md);
+
+void
+MD5(const unsigned char *input, int ilen, unsigned char *output);
+
+#endif
--- /dev/null
+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+/*
+ * FIPS pub 180-1: Secure Hash Algorithm (SHA-1)
+ * based on: http://csrc.nist.gov/fips/fip180-1.txt
+ * implemented by Jun-ichiro itojun Itoh <itojun@itojun.org>
+ */
+
+#include <sys/types.h>
+#ifdef WIN32
+
+#ifndef BIG_ENDIAN
+#define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
+#endif
+#ifndef LITTLE_ENDIAN
+#define LITTLE_ENDIAN 1234
+#endif
+#ifndef BYTE_ORDER
+#define BYTE_ORDER LITTLE_ENDIAN
+#endif
+
+typedef unsigned __int64 u_int64_t;
+
+#undef __P
+#ifndef __P
+#if __STDC__
+#define __P(protos) protos
+#else
+#define __P(protos) ()
+#endif
+#endif
+
+#define bzero(b, len) (memset((b), '\0', (len)), (void) 0)
+
+#else
+#include <sys/stat.h>
+#include <sys/cdefs.h>
+#include <sys/time.h>
+#endif
+
+#include <string.h>
+
+struct sha1_ctxt {
+ union {
+ unsigned char b8[20];
+ unsigned int b32[5];
+ } h;
+ union {
+ unsigned char b8[8];
+ u_int64_t b64[1];
+ } c;
+ union {
+ unsigned char b8[64];
+ unsigned int b32[16];
+ } m;
+ unsigned char count;
+};
+
+/* sanity check */
+#if BYTE_ORDER != BIG_ENDIAN
+# if BYTE_ORDER != LITTLE_ENDIAN
+# define unsupported 1
+# endif
+#endif
+
+#ifndef unsupported
+
+/* constant table */
+static unsigned int _K[] = { 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6 };
+#define K(t) _K[(t) / 20]
+
+#define F0(b, c, d) (((b) & (c)) | ((~(b)) & (d)))
+#define F1(b, c, d) (((b) ^ (c)) ^ (d))
+#define F2(b, c, d) (((b) & (c)) | ((b) & (d)) | ((c) & (d)))
+#define F3(b, c, d) (((b) ^ (c)) ^ (d))
+
+#define S(n, x) (((x) << (n)) | ((x) >> (32 - n)))
+
+#define H(n) (ctxt->h.b32[(n)])
+#define COUNT (ctxt->count)
+#define BCOUNT (ctxt->c.b64[0] / 8)
+#define W(n) (ctxt->m.b32[(n)])
+
+#define PUTBYTE(x) { \
+ ctxt->m.b8[(COUNT % 64)] = (x); \
+ COUNT++; \
+ COUNT %= 64; \
+ ctxt->c.b64[0] += 8; \
+ if (COUNT % 64 == 0) \
+ sha1_step(ctxt); \
+ }
+
+#define PUTPAD(x) { \
+ ctxt->m.b8[(COUNT % 64)] = (x); \
+ COUNT++; \
+ COUNT %= 64; \
+ if (COUNT % 64 == 0) \
+ sha1_step(ctxt); \
+ }
+
+static void sha1_step __P((struct sha1_ctxt *));
+
+static void
+sha1_step(struct sha1_ctxt *ctxt)
+{
+ unsigned int a, b, c, d, e, tmp;
+ size_t t, s;
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+ struct sha1_ctxt tctxt;
+
+ memcpy(&tctxt.m.b8[0], &ctxt->m.b8[0], 64);
+ ctxt->m.b8[0] = tctxt.m.b8[3]; ctxt->m.b8[1] = tctxt.m.b8[2];
+ ctxt->m.b8[2] = tctxt.m.b8[1]; ctxt->m.b8[3] = tctxt.m.b8[0];
+ ctxt->m.b8[4] = tctxt.m.b8[7]; ctxt->m.b8[5] = tctxt.m.b8[6];
+ ctxt->m.b8[6] = tctxt.m.b8[5]; ctxt->m.b8[7] = tctxt.m.b8[4];
+ ctxt->m.b8[8] = tctxt.m.b8[11]; ctxt->m.b8[9] = tctxt.m.b8[10];
+ ctxt->m.b8[10] = tctxt.m.b8[9]; ctxt->m.b8[11] = tctxt.m.b8[8];
+ ctxt->m.b8[12] = tctxt.m.b8[15]; ctxt->m.b8[13] = tctxt.m.b8[14];
+ ctxt->m.b8[14] = tctxt.m.b8[13]; ctxt->m.b8[15] = tctxt.m.b8[12];
+ ctxt->m.b8[16] = tctxt.m.b8[19]; ctxt->m.b8[17] = tctxt.m.b8[18];
+ ctxt->m.b8[18] = tctxt.m.b8[17]; ctxt->m.b8[19] = tctxt.m.b8[16];
+ ctxt->m.b8[20] = tctxt.m.b8[23]; ctxt->m.b8[21] = tctxt.m.b8[22];
+ ctxt->m.b8[22] = tctxt.m.b8[21]; ctxt->m.b8[23] = tctxt.m.b8[20];
+ ctxt->m.b8[24] = tctxt.m.b8[27]; ctxt->m.b8[25] = tctxt.m.b8[26];
+ ctxt->m.b8[26] = tctxt.m.b8[25]; ctxt->m.b8[27] = tctxt.m.b8[24];
+ ctxt->m.b8[28] = tctxt.m.b8[31]; ctxt->m.b8[29] = tctxt.m.b8[30];
+ ctxt->m.b8[30] = tctxt.m.b8[29]; ctxt->m.b8[31] = tctxt.m.b8[28];
+ ctxt->m.b8[32] = tctxt.m.b8[35]; ctxt->m.b8[33] = tctxt.m.b8[34];
+ ctxt->m.b8[34] = tctxt.m.b8[33]; ctxt->m.b8[35] = tctxt.m.b8[32];
+ ctxt->m.b8[36] = tctxt.m.b8[39]; ctxt->m.b8[37] = tctxt.m.b8[38];
+ ctxt->m.b8[38] = tctxt.m.b8[37]; ctxt->m.b8[39] = tctxt.m.b8[36];
+ ctxt->m.b8[40] = tctxt.m.b8[43]; ctxt->m.b8[41] = tctxt.m.b8[42];
+ ctxt->m.b8[42] = tctxt.m.b8[41]; ctxt->m.b8[43] = tctxt.m.b8[40];
+ ctxt->m.b8[44] = tctxt.m.b8[47]; ctxt->m.b8[45] = tctxt.m.b8[46];
+ ctxt->m.b8[46] = tctxt.m.b8[45]; ctxt->m.b8[47] = tctxt.m.b8[44];
+ ctxt->m.b8[48] = tctxt.m.b8[51]; ctxt->m.b8[49] = tctxt.m.b8[50];
+ ctxt->m.b8[50] = tctxt.m.b8[49]; ctxt->m.b8[51] = tctxt.m.b8[48];
+ ctxt->m.b8[52] = tctxt.m.b8[55]; ctxt->m.b8[53] = tctxt.m.b8[54];
+ ctxt->m.b8[54] = tctxt.m.b8[53]; ctxt->m.b8[55] = tctxt.m.b8[52];
+ ctxt->m.b8[56] = tctxt.m.b8[59]; ctxt->m.b8[57] = tctxt.m.b8[58];
+ ctxt->m.b8[58] = tctxt.m.b8[57]; ctxt->m.b8[59] = tctxt.m.b8[56];
+ ctxt->m.b8[60] = tctxt.m.b8[63]; ctxt->m.b8[61] = tctxt.m.b8[62];
+ ctxt->m.b8[62] = tctxt.m.b8[61]; ctxt->m.b8[63] = tctxt.m.b8[60];
+#endif
+
+ a = H(0); b = H(1); c = H(2); d = H(3); e = H(4);
+
+ for (t = 0; t < 20; t++) {
+ s = t & 0x0f;
+ if (t >= 16)
+ W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^
+ W((s+2) & 0x0f) ^ W(s));
+
+ tmp = S(5, a) + F0(b, c, d) + e + W(s) + K(t);
+ e = d; d = c; c = S(30, b); b = a; a = tmp;
+ }
+ for (t = 20; t < 40; t++) {
+ s = t & 0x0f;
+ W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^
+ W((s+2) & 0x0f) ^ W(s));
+ tmp = S(5, a) + F1(b, c, d) + e + W(s) + K(t);
+ e = d; d = c; c = S(30, b); b = a; a = tmp;
+ }
+ for (t = 40; t < 60; t++) {
+ s = t & 0x0f;
+ W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^
+ W((s+2) & 0x0f) ^ W(s));
+ tmp = S(5, a) + F2(b, c, d) + e + W(s) + K(t);
+ e = d; d = c; c = S(30, b); b = a; a = tmp;
+ }
+ for (t = 60; t < 80; t++) {
+ s = t & 0x0f;
+ W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^
+ W((s+2) & 0x0f) ^ W(s));
+ tmp = S(5, a) + F3(b, c, d) + e + W(s) + K(t);
+ e = d; d = c; c = S(30, b); b = a; a = tmp;
+ }
+
+ H(0) = H(0) + a;
+ H(1) = H(1) + b;
+ H(2) = H(2) + c;
+ H(3) = H(3) + d;
+ H(4) = H(4) + e;
+
+ bzero(&ctxt->m.b8[0], 64);
+}
+
+/*------------------------------------------------------------*/
+
+void
+sha1_init(struct sha1_ctxt *ctxt)
+{
+ bzero(ctxt, sizeof(struct sha1_ctxt));
+ H(0) = 0x67452301;
+ H(1) = 0xefcdab89;
+ H(2) = 0x98badcfe;
+ H(3) = 0x10325476;
+ H(4) = 0xc3d2e1f0;
+}
+
+void
+sha1_pad(struct sha1_ctxt *ctxt)
+{
+ size_t padlen; /*pad length in bytes*/
+ size_t padstart;
+
+ PUTPAD(0x80);
+
+ padstart = COUNT % 64;
+ padlen = 64 - padstart;
+ if (padlen < 8) {
+ bzero(&ctxt->m.b8[padstart], padlen);
+ COUNT += padlen;
+ COUNT %= 64;
+ sha1_step(ctxt);
+ padstart = COUNT % 64; /* should be 0 */
+ padlen = 64 - padstart; /* should be 64 */
+ }
+ bzero(&ctxt->m.b8[padstart], padlen - 8);
+ COUNT += (padlen - 8);
+ COUNT %= 64;
+#if BYTE_ORDER == BIG_ENDIAN
+ PUTPAD(ctxt->c.b8[0]); PUTPAD(ctxt->c.b8[1]);
+ PUTPAD(ctxt->c.b8[2]); PUTPAD(ctxt->c.b8[3]);
+ PUTPAD(ctxt->c.b8[4]); PUTPAD(ctxt->c.b8[5]);
+ PUTPAD(ctxt->c.b8[6]); PUTPAD(ctxt->c.b8[7]);
+#else
+ PUTPAD(ctxt->c.b8[7]); PUTPAD(ctxt->c.b8[6]);
+ PUTPAD(ctxt->c.b8[5]); PUTPAD(ctxt->c.b8[4]);
+ PUTPAD(ctxt->c.b8[3]); PUTPAD(ctxt->c.b8[2]);
+ PUTPAD(ctxt->c.b8[1]); PUTPAD(ctxt->c.b8[0]);
+#endif
+}
+
+void
+sha1_loop(struct sha1_ctxt *ctxt, const unsigned char *input, size_t len)
+{
+ size_t gaplen;
+ size_t gapstart;
+ size_t off;
+ size_t copysiz;
+
+ off = 0;
+
+ while (off < len) {
+ gapstart = COUNT % 64;
+ gaplen = 64 - gapstart;
+
+ copysiz = (gaplen < len - off) ? gaplen : len - off;
+ memcpy(&ctxt->m.b8[gapstart], &input[off], copysiz);
+ COUNT += copysiz;
+ COUNT %= 64;
+ ctxt->c.b64[0] += copysiz * 8;
+ if (COUNT % 64 == 0)
+ sha1_step(ctxt);
+ off += copysiz;
+ }
+}
+
+void
+sha1_result(struct sha1_ctxt *ctxt, void *digest0)
+{
+ unsigned char *digest;
+
+ digest = (unsigned char *)digest0;
+ sha1_pad(ctxt);
+#if BYTE_ORDER == BIG_ENDIAN
+ memcpy(digest, &ctxt->h.b8[0], 20);
+#else
+ digest[0] = ctxt->h.b8[3]; digest[1] = ctxt->h.b8[2];
+ digest[2] = ctxt->h.b8[1]; digest[3] = ctxt->h.b8[0];
+ digest[4] = ctxt->h.b8[7]; digest[5] = ctxt->h.b8[6];
+ digest[6] = ctxt->h.b8[5]; digest[7] = ctxt->h.b8[4];
+ digest[8] = ctxt->h.b8[11]; digest[9] = ctxt->h.b8[10];
+ digest[10] = ctxt->h.b8[9]; digest[11] = ctxt->h.b8[8];
+ digest[12] = ctxt->h.b8[15]; digest[13] = ctxt->h.b8[14];
+ digest[14] = ctxt->h.b8[13]; digest[15] = ctxt->h.b8[12];
+ digest[16] = ctxt->h.b8[19]; digest[17] = ctxt->h.b8[18];
+ digest[18] = ctxt->h.b8[17]; digest[19] = ctxt->h.b8[16];
+#endif
+}
+
+/*
+ * This should look and work like the libcrypto implementation
+ */
+
+unsigned char *
+SHA1(const unsigned char *d, size_t n, unsigned char *md)
+{
+ struct sha1_ctxt ctx;
+
+ sha1_init(&ctx);
+ sha1_loop(&ctx, d, n);
+ sha1_result(&ctx, (void *)md);
+
+ return md;
+}
+
+#endif /*unsupported*/
--- /dev/null
+<h2>libwebsockets_hangup_on_client - Server calls to terminate client connection</h2>
+<i>void</i>
+<b>libwebsockets_hangup_on_client</b>
+(<i>struct libwebsocket_context *</i> <b>context</b>,
+<i>int</i> <b>fd</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>context</b>
+<dd>libwebsockets context
+<dt><b>fd</b>
+<dd>Connection socket descriptor
+</dl>
+<hr>
+<h2>libwebsockets_get_peer_addresses - Get client address information</h2>
+<i>void</i>
+<b>libwebsockets_get_peer_addresses</b>
+(<i>int</i> <b>fd</b>,
+<i>char *</i> <b>name</b>,
+<i>int</i> <b>name_len</b>,
+<i>char *</i> <b>rip</b>,
+<i>int</i> <b>rip_len</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>fd</b>
+<dd>Connection socket descriptor
+<dt><b>name</b>
+<dd>Buffer to take client address name
+<dt><b>name_len</b>
+<dd>Length of client address name buffer
+<dt><b>rip</b>
+<dd>Buffer to take client address IP qotted quad
+<dt><b>rip_len</b>
+<dd>Length of client address IP buffer
+</dl>
+<h3>Description</h3>
+<blockquote>
+This function fills in <tt><b>name</b></tt> and <tt><b>rip</b></tt> with the name and IP of
+the client connected with socket descriptor <tt><b>fd</b></tt>. Names may be
+truncated if there is not enough room. If either cannot be
+determined, they will be returned as valid zero-length strings.
+</blockquote>
+<hr>
+<h2>libwebsocket_service_fd - Service polled socket with something waiting</h2>
+<i>int</i>
+<b>libwebsocket_service_fd</b>
+(<i>struct libwebsocket_context *</i> <b>context</b>,
+<i>struct pollfd *</i> <b>pollfd</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>context</b>
+<dd>Websocket context
+<dt><b>pollfd</b>
+<dd>The pollfd entry describing the socket fd and which events
+happened.
+</dl>
+<h3>Description</h3>
+<blockquote>
+This function closes any active connections and then frees the
+context. After calling this, any further use of the context is
+undefined.
+</blockquote>
+<hr>
+<h2>libwebsocket_context_destroy - Destroy the websocket context</h2>
+<i>void</i>
+<b>libwebsocket_context_destroy</b>
+(<i>struct libwebsocket_context *</i> <b>context</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>context</b>
+<dd>Websocket context
+</dl>
+<h3>Description</h3>
+<blockquote>
+This function closes any active connections and then frees the
+context. After calling this, any further use of the context is
+undefined.
+</blockquote>
+<hr>
+<h2>libwebsocket_service - Service any pending websocket activity</h2>
+<i>int</i>
+<b>libwebsocket_service</b>
+(<i>struct libwebsocket_context *</i> <b>context</b>,
+<i>int</i> <b>timeout_ms</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>context</b>
+<dd>Websocket context
+<dt><b>timeout_ms</b>
+<dd>Timeout for poll; 0 means return immediately if nothing needed
+service otherwise block and service immediately, returning
+after the timeout if nothing needed service.
+</dl>
+<h3>Description</h3>
+<blockquote>
+This function deals with any pending websocket traffic, for three
+kinds of event. It handles these events on both server and client
+types of connection the same.
+<p>
+1) Accept new connections to our context's server
+<p>
+2) Perform pending broadcast writes initiated from other forked
+processes (effectively serializing asynchronous broadcasts)
+<p>
+3) Call the receive callback for incoming frame data received by
+server or client connections.
+<p>
+You need to call this service function periodically to all the above
+functions to happen; if your application is single-threaded you can
+just call it in your main event loop.
+<p>
+Alternatively you can fork a new process that asynchronously handles
+calling this service in a loop. In that case you are happy if this
+call blocks your thread until it needs to take care of something and
+would call it with a large nonzero timeout. Your loop then takes no
+CPU while there is nothing happening.
+<p>
+If you are calling it in a single-threaded app, you don't want it to
+wait around blocking other things in your loop from happening, so you
+would call it with a timeout_ms of 0, so it returns immediately if
+nothing is pending, or as soon as it services whatever was pending.
+</blockquote>
+<hr>
+<h2>libwebsocket_callback_on_writable - Request a callback when this socket becomes able to be written to without blocking</h2>
+<i>int</i>
+<b>libwebsocket_callback_on_writable</b>
+(<i>struct libwebsocket_context *</i> <b>context</b>,
+<i>struct libwebsocket *</i> <b>wsi</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>context</b>
+<dd>libwebsockets context
+<dt><b>wsi</b>
+<dd>Websocket connection instance to get callback for
+</dl>
+<hr>
+<h2>libwebsocket_callback_on_writable_all_protocol - Request a callback for all connections using the given protocol when it becomes possible to write to each socket without blocking in turn.</h2>
+<i>int</i>
+<b>libwebsocket_callback_on_writable_all_protocol</b>
+(<i>const struct libwebsocket_protocols *</i> <b>protocol</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>protocol</b>
+<dd>Protocol whose connections will get callbacks
+</dl>
+<hr>
+<h2>libwebsocket_set_timeout - marks the wsi as subject to a timeout</h2>
+<i>void</i>
+<b>libwebsocket_set_timeout</b>
+(<i>struct libwebsocket *</i> <b>wsi</b>,
+<i>enum pending_timeout</i> <b>reason</b>,
+<i>int</i> <b>secs</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>wsi</b>
+<dd>Websocket connection instance
+<dt><b>reason</b>
+<dd>timeout reason
+<dt><b>secs</b>
+<dd>how many seconds
+</dl>
+<h3>Description</h3>
+<blockquote>
+<p>
+You will not need this unless you are doing something special
+</blockquote>
+<hr>
+<h2>libwebsocket_get_socket_fd - returns the socket file descriptor</h2>
+<i>int</i>
+<b>libwebsocket_get_socket_fd</b>
+(<i>struct libwebsocket *</i> <b>wsi</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>wsi</b>
+<dd>Websocket connection instance
+</dl>
+<h3>Description</h3>
+<blockquote>
+<p>
+You will not need this unless you are doing something special
+</blockquote>
+<hr>
+<h2>libwebsocket_rx_flow_control - Enable and disable socket servicing for receieved packets.</h2>
+<i>int</i>
+<b>libwebsocket_rx_flow_control</b>
+(<i>struct libwebsocket *</i> <b>wsi</b>,
+<i>int</i> <b>enable</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>wsi</b>
+<dd>Websocket connection instance to get callback for
+<dt><b>enable</b>
+<dd>0 = disable read servicing for this connection, 1 = enable
+</dl>
+<h3>Description</h3>
+<blockquote>
+<p>
+If the output side of a server process becomes choked, this allows flow
+control for the input side.
+</blockquote>
+<hr>
+<h2>libwebsocket_canonical_hostname - returns this host's hostname</h2>
+<i>const char *</i>
+<b>libwebsocket_canonical_hostname</b>
+(<i>struct libwebsocket_context *</i> <b>context</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>context</b>
+<dd>Websocket context
+</dl>
+<h3>Description</h3>
+<blockquote>
+<p>
+This is typically used by client code to fill in the host parameter
+when making a client connection. You can only call it after the context
+has been created.
+</blockquote>
+<hr>
+<h2>libwebsocket_create_context - Create the websocket handler</h2>
+<i>struct libwebsocket_context *</i>
+<b>libwebsocket_create_context</b>
+(<i>int</i> <b>port</b>,
+<i>const char *</i> <b>interf</b>,
+<i>struct libwebsocket_protocols *</i> <b>protocols</b>,
+<i>struct libwebsocket_extension *</i> <b>extensions</b>,
+<i>const char *</i> <b>ssl_cert_filepath</b>,
+<i>const char *</i> <b>ssl_private_key_filepath</b>,
+<i>int</i> <b>gid</b>,
+<i>int</i> <b>uid</b>,
+<i>unsigned int</i> <b>options</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>port</b>
+<dd>Port to listen on... you can use 0 to suppress listening on
+any port, that's what you want if you are not running a
+websocket server at all but just using it as a client
+<dt><b>interf</b>
+<dd>NULL to bind the listen socket to all interfaces, or the
+interface name, eg, "eth2"
+<dt><b>protocols</b>
+<dd>Array of structures listing supported protocols and a protocol-
+specific callback for each one. The list is ended with an
+entry that has a NULL callback pointer.
+It's not const because we write the owning_server member
+<dt><b>extensions</b>
+<dd>NULL or array of libwebsocket_extension structs listing the
+extensions this context supports
+<dt><b>ssl_cert_filepath</b>
+<dd>If libwebsockets was compiled to use ssl, and you want
+to listen using SSL, set to the filepath to fetch the
+server cert from, otherwise NULL for unencrypted
+<dt><b>ssl_private_key_filepath</b>
+<dd>filepath to private key if wanting SSL mode,
+else ignored
+<dt><b>gid</b>
+<dd>group id to change to after setting listen socket, or -1.
+<dt><b>uid</b>
+<dd>user id to change to after setting listen socket, or -1.
+<dt><b>options</b>
+<dd>0, or LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK
+</dl>
+<h3>Description</h3>
+<blockquote>
+This function creates the listening socket and takes care
+of all initialization in one step.
+<p>
+After initialization, it returns a struct libwebsocket_context * that
+represents this server. After calling, user code needs to take care
+of calling <b>libwebsocket_service</b> with the context pointer to get the
+server's sockets serviced. This can be done in the same process context
+or a forked process, or another thread,
+<p>
+The protocol callback functions are called for a handful of events
+including http requests coming in, websocket connections becoming
+established, and data arriving; it's also called periodically to allow
+async transmission.
+<p>
+HTTP requests are sent always to the FIRST protocol in <tt><b>protocol</b></tt>, since
+at that time websocket protocol has not been negotiated. Other
+protocols after the first one never see any HTTP callack activity.
+<p>
+The server created is a simple http server by default; part of the
+websocket standard is upgrading this http connection to a websocket one.
+<p>
+This allows the same server to provide files like scripts and favicon /
+images or whatever over http and dynamic data over websockets all in
+one place; they're all handled in the user callback.
+</blockquote>
+<hr>
+<h2>libwebsockets_fork_service_loop - Optional helper function forks off a process for the websocket server loop. You don't have to use this but if not, you have to make sure you are calling libwebsocket_service periodically to service the websocket traffic</h2>
+<i>int</i>
+<b>libwebsockets_fork_service_loop</b>
+(<i>struct libwebsocket_context *</i> <b>context</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>context</b>
+<dd>server context returned by creation function
+</dl>
+<hr>
+<h2>libwebsockets_get_protocol - Returns a protocol pointer from a websocket connection.</h2>
+<i>const struct libwebsocket_protocols *</i>
+<b>libwebsockets_get_protocol</b>
+(<i>struct libwebsocket *</i> <b>wsi</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>wsi</b>
+<dd>pointer to struct websocket you want to know the protocol of
+</dl>
+<h3>Description</h3>
+<blockquote>
+<p>
+This is useful to get the protocol to broadcast back to from inside
+the callback.
+</blockquote>
+<hr>
+<h2>libwebsockets_broadcast - Sends a buffer to the callback for all active connections of the given protocol.</h2>
+<i>int</i>
+<b>libwebsockets_broadcast</b>
+(<i>const struct libwebsocket_protocols *</i> <b>protocol</b>,
+<i>unsigned char *</i> <b>buf</b>,
+<i>size_t</i> <b>len</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>protocol</b>
+<dd>pointer to the protocol you will broadcast to all members of
+<dt><b>buf</b>
+<dd>buffer containing the data to be broadcase. NOTE: this has to be
+allocated with LWS_SEND_BUFFER_PRE_PADDING valid bytes before
+the pointer and LWS_SEND_BUFFER_POST_PADDING afterwards in the
+case you are calling this function from callback context.
+<dt><b>len</b>
+<dd>length of payload data in buf, starting from buf.
+</dl>
+<h3>Description</h3>
+<blockquote>
+This function allows bulk sending of a packet to every connection using
+the given protocol. It does not send the data directly; instead it calls
+the callback with a reason type of LWS_CALLBACK_BROADCAST. If the callback
+wants to actually send the data for that connection, the callback itself
+should call <b>libwebsocket_write</b>.
+<p>
+<b>libwebsockets_broadcast</b> can be called from another fork context without
+having to take any care about data visibility between the processes, it'll
+"just work".
+</blockquote>
+<hr>
+<h2>libwebsocket_write - Apply protocol then write data to client</h2>
+<i>int</i>
+<b>libwebsocket_write</b>
+(<i>struct libwebsocket *</i> <b>wsi</b>,
+<i>unsigned char *</i> <b>buf</b>,
+<i>size_t</i> <b>len</b>,
+<i>enum libwebsocket_write_protocol</i> <b>protocol</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>wsi</b>
+<dd>Websocket instance (available from user callback)
+<dt><b>buf</b>
+<dd>The data to send. For data being sent on a websocket
+connection (ie, not default http), this buffer MUST have
+LWS_SEND_BUFFER_PRE_PADDING bytes valid BEFORE the pointer
+and an additional LWS_SEND_BUFFER_POST_PADDING bytes valid
+in the buffer after (buf + len). This is so the protocol
+header and trailer data can be added in-situ.
+<dt><b>len</b>
+<dd>Count of the data bytes in the payload starting from buf
+<dt><b>protocol</b>
+<dd>Use LWS_WRITE_HTTP to reply to an http connection, and one
+of LWS_WRITE_BINARY or LWS_WRITE_TEXT to send appropriate
+data on a websockets connection. Remember to allow the extra
+bytes before and after buf if LWS_WRITE_BINARY or LWS_WRITE_TEXT
+are used.
+</dl>
+<h3>Description</h3>
+<blockquote>
+This function provides the way to issue data back to the client
+for both http and websocket protocols.
+<p>
+In the case of sending using websocket protocol, be sure to allocate
+valid storage before and after buf as explained above. This scheme
+allows maximum efficiency of sending data and protocol in a single
+packet while not burdening the user code with any protocol knowledge.
+</blockquote>
+<hr>
+<h2>libwebsockets_serve_http_file - Send a file back to the client using http</h2>
+<i>int</i>
+<b>libwebsockets_serve_http_file</b>
+(<i>struct libwebsocket *</i> <b>wsi</b>,
+<i>const char *</i> <b>file</b>,
+<i>const char *</i> <b>content_type</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>wsi</b>
+<dd>Websocket instance (available from user callback)
+<dt><b>file</b>
+<dd>The file to issue over http
+<dt><b>content_type</b>
+<dd>The http content type, eg, text/html
+</dl>
+<h3>Description</h3>
+<blockquote>
+This function is intended to be called from the callback in response
+to http requests from the client. It allows the callback to issue
+local files down the http link in a single step.
+</blockquote>
+<hr>
+<h2>libwebsockets_remaining_packet_payload - Bytes to come before "overall" rx packet is complete</h2>
+<i>size_t</i>
+<b>libwebsockets_remaining_packet_payload</b>
+(<i>struct libwebsocket *</i> <b>wsi</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>wsi</b>
+<dd>Websocket instance (available from user callback)
+</dl>
+<h3>Description</h3>
+<blockquote>
+This function is intended to be called from the callback if the
+user code is interested in "complete packets" from the client.
+libwebsockets just passes through payload as it comes and issues a buffer
+additionally when it hits a built-in limit. The LWS_CALLBACK_RECEIVE
+callback handler can use this API to find out if the buffer it has just
+been given is the last piece of a "complete packet" from the client --
+when that is the case <b>libwebsockets_remaining_packet_payload</b> will return
+0.
+<p>
+Many protocols won't care becuse their packets are always small.
+</blockquote>
+<hr>
+<h2>libwebsocket_client_connect - Connect to another websocket server</h2>
+<i>struct libwebsocket *</i>
+<b>libwebsocket_client_connect</b>
+(<i>struct libwebsocket_context *</i> <b>context</b>,
+<i>const char *</i> <b>address</b>,
+<i>int</i> <b>port</b>,
+<i>int</i> <b>ssl_connection</b>,
+<i>const char *</i> <b>path</b>,
+<i>const char *</i> <b>host</b>,
+<i>const char *</i> <b>origin</b>,
+<i>const char *</i> <b>protocol</b>,
+<i>int</i> <b>ietf_version_or_minus_one</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>context</b>
+<dd>Websocket context
+<dt><b>address</b>
+<dd>Remote server address, eg, "myserver.com"
+<dt><b>port</b>
+<dd>Port to connect to on the remote server, eg, 80
+<dt><b>ssl_connection</b>
+<dd>0 = ws://, 1 = wss:// encrypted, 2 = wss:// allow self
+signed certs
+<dt><b>path</b>
+<dd>Websocket path on server
+<dt><b>host</b>
+<dd>Hostname on server
+<dt><b>origin</b>
+<dd>Socket origin name
+<dt><b>protocol</b>
+<dd>Comma-separated list of protocols being asked for from
+the server, or just one. The server will pick the one it
+likes best.
+<dt><b>ietf_version_or_minus_one</b>
+<dd>-1 to ask to connect using the default, latest
+protocol supported, or the specific protocol ordinal
+</dl>
+<h3>Description</h3>
+<blockquote>
+This function creates a connection to a remote server
+</blockquote>
+<hr>
+<h2>libwebsocket_client_connect_extended - Connect to another websocket server</h2>
+<i>struct libwebsocket *</i>
+<b>libwebsocket_client_connect_extended</b>
+(<i>struct libwebsocket_context *</i> <b>context</b>,
+<i>const char *</i> <b>address</b>,
+<i>int</i> <b>port</b>,
+<i>int</i> <b>ssl_connection</b>,
+<i>const char *</i> <b>path</b>,
+<i>const char *</i> <b>host</b>,
+<i>const char *</i> <b>origin</b>,
+<i>const char *</i> <b>protocol</b>,
+<i>int</i> <b>ietf_version_or_minus_one</b>,
+<i>void *</i> <b>userdata</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>context</b>
+<dd>Websocket context
+<dt><b>address</b>
+<dd>Remote server address, eg, "myserver.com"
+<dt><b>port</b>
+<dd>Port to connect to on the remote server, eg, 80
+<dt><b>ssl_connection</b>
+<dd>0 = ws://, 1 = wss:// encrypted, 2 = wss:// allow self
+signed certs
+<dt><b>path</b>
+<dd>Websocket path on server
+<dt><b>host</b>
+<dd>Hostname on server
+<dt><b>origin</b>
+<dd>Socket origin name
+<dt><b>protocol</b>
+<dd>Comma-separated list of protocols being asked for from
+the server, or just one. The server will pick the one it
+likes best.
+<dt><b>ietf_version_or_minus_one</b>
+<dd>-1 to ask to connect using the default, latest
+protocol supported, or the specific protocol ordinal
+<dt><b>userdata</b>
+<dd>Pre-allocated user data
+</dl>
+<h3>Description</h3>
+<blockquote>
+This function creates a connection to a remote server
+</blockquote>
+<hr>
+<h2>callback - User server actions</h2>
+<i>LWS_EXTERN int</i>
+<b>callback</b>
+(<i>struct libwebsocket_context *</i> <b>context</b>,
+<i>struct libwebsocket *</i> <b>wsi</b>,
+<i>enum libwebsocket_callback_reasons</i> <b>reason</b>,
+<i>void *</i> <b>user</b>,
+<i>void *</i> <b>in</b>,
+<i>size_t</i> <b>len</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>context</b>
+<dd>Websockets context
+<dt><b>wsi</b>
+<dd>Opaque websocket instance pointer
+<dt><b>reason</b>
+<dd>The reason for the call
+<dt><b>user</b>
+<dd>Pointer to per-session user data allocated by library
+<dt><b>in</b>
+<dd>Pointer used for some callback reasons
+<dt><b>len</b>
+<dd>Length set for some callback reasons
+</dl>
+<h3>Description</h3>
+<blockquote>
+This callback is the way the user controls what is served. All the
+protocol detail is hidden and handled by the library.
+<p>
+For each connection / session there is user data allocated that is
+pointed to by "user". You set the size of this user data area when
+the library is initialized with libwebsocket_create_server.
+<p>
+You get an opportunity to initialize user data when called back with
+LWS_CALLBACK_ESTABLISHED reason.
+</blockquote>
+<h3>LWS_CALLBACK_ESTABLISHED</h3>
+<blockquote>
+after the server completes a handshake with
+an incoming client
+</blockquote>
+<h3>LWS_CALLBACK_CLIENT_CONNECTION_ERROR</h3>
+<blockquote>
+the request client connection has
+been unable to complete a handshake with the remote server
+</blockquote>
+<h3>LWS_CALLBACK_CLIENT_ESTABLISHED</h3>
+<blockquote>
+after your client connection completed
+a handshake with the remote server
+</blockquote>
+<h3>LWS_CALLBACK_CLOSED</h3>
+<blockquote>
+when the websocket session ends
+</blockquote>
+<h3>LWS_CALLBACK_BROADCAST</h3>
+<blockquote>
+signal to send to client (you would use
+<b>libwebsocket_write</b> taking care about the
+special buffer requirements
+</blockquote>
+<h3>LWS_CALLBACK_RECEIVE</h3>
+<blockquote>
+data has appeared for this server endpoint from a
+remote client, it can be found at *in and is
+len bytes long
+</blockquote>
+<h3>LWS_CALLBACK_CLIENT_RECEIVE_PONG</h3>
+<blockquote>
+if you elected to see PONG packets,
+they appear with this callback reason. PONG
+packets only exist in 04+ protocol
+</blockquote>
+<h3>LWS_CALLBACK_CLIENT_RECEIVE</h3>
+<blockquote>
+data has appeared from the server for the
+client connection, it can be found at *in and
+is len bytes long
+</blockquote>
+<h3>LWS_CALLBACK_HTTP</h3>
+<blockquote>
+an http request has come from a client that is not
+asking to upgrade the connection to a websocket
+one. This is a chance to serve http content,
+for example, to send a script to the client
+which will then open the websockets connection.
+<tt><b>in</b></tt> points to the URI path requested and
+<b>libwebsockets_serve_http_file</b> makes it very
+simple to send back a file to the client.
+</blockquote>
+<h3>LWS_CALLBACK_SERVER_WRITEABLE</h3>
+<blockquote>
+If you call
+<b>libwebsocket_callback_on_writable</b> on a connection, you will
+get one of these callbacks coming when the connection socket
+is able to accept another write packet without blocking.
+If it already was able to take another packet without blocking,
+you'll get this callback at the next call to the service loop
+function. Notice that CLIENTs get LWS_CALLBACK_CLIENT_WRITEABLE
+and servers get LWS_CALLBACK_SERVER_WRITEABLE.
+</blockquote>
+<h3>LWS_CALLBACK_FILTER_NETWORK_CONNECTION</h3>
+<blockquote>
+called when a client connects to
+the server at network level; the connection is accepted but then
+passed to this callback to decide whether to hang up immediately
+or not, based on the client IP. <tt><b>user</b></tt> contains the connection
+socket's descriptor. Return non-zero to terminate
+the connection before sending or receiving anything.
+Because this happens immediately after the network connection
+from the client, there's no websocket protocol selected yet so
+this callback is issued only to protocol 0.
+</blockquote>
+<h3>LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION</h3>
+<blockquote>
+called when the handshake has
+been received and parsed from the client, but the response is
+not sent yet. Return non-zero to disallow the connection.
+<tt><b>user</b></tt> is a pointer to an array of struct lws_tokens, you can
+use the header enums lws_token_indexes from libwebsockets.h
+to check for and read the supported header presence and
+content before deciding to allow the handshake to proceed or
+to kill the connection.
+</blockquote>
+<h3>LWS_CALLBACK_OPENSSL_LOAD_EXTRA_CLIENT_VERIFY_CERTS</h3>
+<blockquote>
+if configured for
+including OpenSSL support, this callback allows your user code
+to perform extra <b>SSL_CTX_load_verify_locations</b> or similar
+calls to direct OpenSSL where to find certificates the client
+can use to confirm the remote server identity. <tt><b>user</b></tt> is the
+OpenSSL SSL_CTX*
+</blockquote>
+<h3>LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS</h3>
+<blockquote>
+if configured for
+including OpenSSL support, this callback allows your user code
+to load extra certifcates into the server which allow it to
+verify the validity of certificates returned by clients. <tt><b>user</b></tt>
+is the server's OpenSSL SSL_CTX*
+</blockquote>
+<h3>LWS_CALLBACK_OPENSSL_PERFORM_CLIENT_CERT_VERIFICATION</h3>
+<blockquote>
+if the
+libwebsockets context was created with the option
+LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT, then this
+callback is generated during OpenSSL verification of the cert
+sent from the client. It is sent to protocol[0] callback as
+no protocol has been negotiated on the connection yet.
+Notice that the libwebsockets context and wsi are both NULL
+during this callback. See
+</blockquote>
+<h3>http</h3>
+<blockquote>
+//www.openssl.org/docs/ssl/SSL_CTX_set_verify.html
+to understand more detail about the OpenSSL callback that
+generates this libwebsockets callback and the meanings of the
+arguments passed. In this callback, <tt><b>user</b></tt> is the x509_ctx,
+<tt><b>in</b></tt> is the ssl pointer and <tt><b>len</b></tt> is preverify_ok
+Notice that this callback maintains libwebsocket return
+conventions, return 0 to mean the cert is OK or 1 to fail it.
+This also means that if you don't handle this callback then
+the default callback action of returning 0 allows the client
+certificates.
+</blockquote>
+<h3>LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER</h3>
+<blockquote>
+this callback happens
+when a client handshake is being compiled. <tt><b>user</b></tt> is NULL,
+<tt><b>in</b></tt> is a char **, it's pointing to a char * which holds the
+next location in the header buffer where you can add
+headers, and <tt><b>len</b></tt> is the remaining space in the header buffer,
+which is typically some hundreds of bytes. So, to add a canned
+cookie, your handler code might look similar to:
+<p>
+char **p = (char **)in;
+<p>
+if (len < 100)
+return 1;
+<p>
+*p += sprintf(*p, "Cookie: a=b\x0d\x0a");
+<p>
+return 0;
+<p>
+Notice if you add anything, you just have to take care about
+the CRLF on the line you added. Obviously this callback is
+optional, if you don't handle it everything is fine.
+<p>
+Notice the callback is coming to protocols[0] all the time,
+because there is no specific protocol handshook yet.
+</blockquote>
+<h3>LWS_CALLBACK_CONFIRM_EXTENSION_OKAY</h3>
+<blockquote>
+When the server handshake code
+sees that it does support a requested extension, before
+accepting the extension by additing to the list sent back to
+the client it gives this callback just to check that it's okay
+to use that extension. It calls back to the requested protocol
+and with <tt><b>in</b></tt> being the extension name, <tt><b>len</b></tt> is 0 and <tt><b>user</b></tt> is
+valid. Note though at this time the ESTABLISHED callback hasn't
+happened yet so if you initialize <tt><b>user</b></tt> content there, <tt><b>user</b></tt>
+content during this callback might not be useful for anything.
+Notice this callback comes to protocols[0].
+</blockquote>
+<h3>LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED</h3>
+<blockquote>
+When a client
+connection is being prepared to start a handshake to a server,
+each supported extension is checked with protocols[0] callback
+with this reason, giving the user code a chance to suppress the
+claim to support that extension by returning non-zero. If
+unhandled, by default 0 will be returned and the extension
+support included in the header to the server. Notice this
+callback comes to protocols[0].
+<p>
+The next four reasons are optional and only need taking care of if you
+will be integrating libwebsockets sockets into an external polling
+array.
+</blockquote>
+<h3>LWS_CALLBACK_ADD_POLL_FD</h3>
+<blockquote>
+libwebsocket deals with its <b>poll</b> loop
+internally, but in the case you are integrating with another
+server you will need to have libwebsocket sockets share a
+polling array with the other server. This and the other
+POLL_FD related callbacks let you put your specialized
+poll array interface code in the callback for protocol 0, the
+first protocol you support, usually the HTTP protocol in the
+serving case. This callback happens when a socket needs to be
+</blockquote>
+<h3>added to the polling loop</h3>
+<blockquote>
+<tt><b>user</b></tt> contains the fd, and
+<tt><b>len</b></tt> is the events bitmap (like, POLLIN). If you are using the
+internal polling loop (the "service" callback), you can just
+ignore these callbacks.
+</blockquote>
+<h3>LWS_CALLBACK_DEL_POLL_FD</h3>
+<blockquote>
+This callback happens when a socket descriptor
+needs to be removed from an external polling array. <tt><b>user</b></tt> is
+the socket desricptor. If you are using the internal polling
+loop, you can just ignore it.
+</blockquote>
+<h3>LWS_CALLBACK_SET_MODE_POLL_FD</h3>
+<blockquote>
+This callback happens when libwebsockets
+wants to modify the events for the socket descriptor in <tt><b>user</b></tt>.
+The handler should OR <tt><b>len</b></tt> on to the events member of the pollfd
+struct for this socket descriptor. If you are using the
+internal polling loop, you can just ignore it.
+</blockquote>
+<h3>LWS_CALLBACK_CLEAR_MODE_POLL_FD</h3>
+<blockquote>
+This callback occurs when libwebsockets
+wants to modify the events for the socket descriptor in <tt><b>user</b></tt>.
+The handler should AND ~<tt><b>len</b></tt> on to the events member of the
+pollfd struct for this socket descriptor. If you are using the
+internal polling loop, you can just ignore it.
+</blockquote>
+<hr>
+<h2>extension_callback - Hooks to allow extensions to operate</h2>
+<i>LWS_EXTERN int</i>
+<b>extension_callback</b>
+(<i>struct libwebsocket_context *</i> <b>context</b>,
+<i>struct libwebsocket_extension *</i> <b>ext</b>,
+<i>struct libwebsocket *</i> <b>wsi</b>,
+<i>enum libwebsocket_extension_callback_reasons</i> <b>reason</b>,
+<i>void *</i> <b>user</b>,
+<i>void *</i> <b>in</b>,
+<i>size_t</i> <b>len</b>)
+<h3>Arguments</h3>
+<dl>
+<dt><b>context</b>
+<dd>Websockets context
+<dt><b>ext</b>
+<dd>This extension
+<dt><b>wsi</b>
+<dd>Opaque websocket instance pointer
+<dt><b>reason</b>
+<dd>The reason for the call
+<dt><b>user</b>
+<dd>Pointer to per-session user data allocated by library
+<dt><b>in</b>
+<dd>Pointer used for some callback reasons
+<dt><b>len</b>
+<dd>Length set for some callback reasons
+</dl>
+<h3>Description</h3>
+<blockquote>
+Each extension that is active on a particular connection receives
+callbacks during the connection lifetime to allow the extension to
+operate on websocket data and manage itself.
+<p>
+Libwebsockets takes care of allocating and freeing "user" memory for
+each active extension on each connection. That is what is pointed to
+by the <tt><b>user</b></tt> parameter.
+</blockquote>
+<h3>LWS_EXT_CALLBACK_CONSTRUCT</h3>
+<blockquote>
+called when the server has decided to
+select this extension from the list provided by the client,
+just before the server will send back the handshake accepting
+the connection with this extension active. This gives the
+extension a chance to initialize its connection context found
+in <tt><b>user</b></tt>.
+</blockquote>
+<h3>LWS_EXT_CALLBACK_CLIENT_CONSTRUCT</h3>
+<blockquote>
+same as LWS_EXT_CALLBACK_CONSTRUCT
+but called when client is instantiating this extension. Some
+extensions will work the same on client and server side and then
+you can just merge handlers for both CONSTRUCTS.
+</blockquote>
+<h3>LWS_EXT_CALLBACK_DESTROY</h3>
+<blockquote>
+called when the connection the extension was
+being used on is about to be closed and deallocated. It's the
+last chance for the extension to deallocate anything it has
+allocated in the user data (pointed to by <tt><b>user</b></tt>) before the
+user data is deleted. This same callback is used whether you
+are in client or server instantiation context.
+</blockquote>
+<h3>LWS_EXT_CALLBACK_PACKET_RX_PREPARSE</h3>
+<blockquote>
+when this extension was active on
+a connection, and a packet of data arrived at the connection,
+it is passed to this callback to give the extension a chance to
+change the data, eg, decompress it. <tt><b>user</b></tt> is pointing to the
+extension's private connection context data, <tt><b>in</b></tt> is pointing
+to an lws_tokens struct, it consists of a char * pointer called
+token, and an int called token_len. At entry, these are
+set to point to the received buffer and set to the content
+length. If the extension will grow the content, it should use
+a new buffer allocated in its private user context data and
+set the pointed-to lws_tokens members to point to its buffer.
+</blockquote>
+<h3>LWS_EXT_CALLBACK_PACKET_TX_PRESEND</h3>
+<blockquote>
+this works the same way as
+LWS_EXT_CALLBACK_PACKET_RX_PREPARSE above, except it gives the
+extension a chance to change websocket data just before it will
+be sent out. Using the same lws_token pointer scheme in <tt><b>in</b></tt>,
+the extension can change the buffer and the length to be
+transmitted how it likes. Again if it wants to grow the
+buffer safely, it should copy the data into its own buffer and
+set the lws_tokens token pointer to it.
+</blockquote>
+<hr>
+<h2>struct libwebsocket_protocols - List of protocols and handlers server supports.</h2>
+<b>struct libwebsocket_protocols</b> {<br>
+ <i>const char *</i> <b>name</b>;<br>
+ <i>callback_function *</i> <b>callback</b>;<br>
+ <i>size_t</i> <b>per_session_data_size</b>;<br>
+ <i>struct libwebsocket_context *</i> <b>owning_server</b>;<br>
+ <i>int</i> <b>broadcast_socket_port</b>;<br>
+ <i>int</i> <b>broadcast_socket_user_fd</b>;<br>
+ <i>int</i> <b>protocol_index</b>;<br>
+};<br>
+<h3>Members</h3>
+<dl>
+<dt><b>name</b>
+<dd>Protocol name that must match the one given in the client
+Javascript new WebSocket(url, 'protocol') name
+<dt><b>callback</b>
+<dd>The service callback used for this protocol. It allows the
+service action for an entire protocol to be encapsulated in
+the protocol-specific callback
+<dt><b>per_session_data_size</b>
+<dd>Each new connection using this protocol gets
+this much memory allocated on connection establishment and
+freed on connection takedown. A pointer to this per-connection
+allocation is passed into the callback in the 'user' parameter
+<dt><b>owning_server</b>
+<dd>the server init call fills in this opaque pointer when
+registering this protocol with the server.
+<dt><b>broadcast_socket_port</b>
+<dd>the server init call fills this in with the
+localhost port number used to forward broadcasts for this
+protocol
+<dt><b>broadcast_socket_user_fd</b>
+<dd>the server init call fills this in ... the <b>main</b>
+process context can write to this socket to perform broadcasts
+(use the <b>libwebsockets_broadcast</b> api to do this instead,
+it works from any process context)
+<dt><b>protocol_index</b>
+<dd>which protocol we are starting from zero
+</dl>
+<h3>Description</h3>
+<blockquote>
+This structure represents one protocol supported by the server. An
+array of these structures is passed to <b>libwebsocket_create_server</b>
+allows as many protocols as you like to be handled by one server.
+</blockquote>
+<hr>
+<h2>struct libwebsocket_extension - An extension we know how to cope with</h2>
+<b>struct libwebsocket_extension</b> {<br>
+ <i>const char *</i> <b>name</b>;<br>
+ <i>extension_callback_function *</i> <b>callback</b>;<br>
+ <i>size_t</i> <b>per_session_data_size</b>;<br>
+ <i>void *</i> <b>per_context_private_data</b>;<br>
+};<br>
+<h3>Members</h3>
+<dl>
+<dt><b>name</b>
+<dd>Formal extension name, eg, "deflate-stream"
+<dt><b>callback</b>
+<dd>Service callback
+<dt><b>per_session_data_size</b>
+<dd>Libwebsockets will auto-malloc this much
+memory for the use of the extension, a pointer
+to it comes in the <tt><b>user</b></tt> callback parameter
+<dt><b>per_context_private_data</b>
+<dd>Optional storage for this externsion that
+is per-context, so it can track stuff across
+all sessions, etc, if it wants
+</dl>
+<hr>
--- /dev/null
+Name: libwebsockets
+Version: 0.1
+Release: 45.gmaster_f1d2113d%{?dist}
+Summary: Websocket Server Library
+
+Group: System
+License: GPL
+URL: http://warmcat.com
+Source0: %{name}-%{version}.tar.gz
+BuildRoot: %(mktemp -ud %{_tmppath}/%{name}-%{version}-%{release}-XXXXXX)
+
+BuildRequires: openssl-devel
+Requires: openssl-devel
+
+%description
+Webserver server library
+
+%package devel
+Summary: Development files for libwebsockets
+Group: Development/Libraries
+Requires: %{name} = %{version}-%{release}
+Requires: openssl-devel
+
+%description devel
+Development files for libwebsockets
+
+%prep
+%setup -q
+
+%build
+./configure --prefix=/usr --libdir=%{_libdir} --enable-openssl
+make
+
+
+%install
+rm -rf $RPM_BUILD_ROOT
+make install DESTDIR=$RPM_BUILD_ROOT
+
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%files
+%defattr(-,root,root,-)
+%attr(755,root,root) /usr/bin/libwebsockets-test-server
+%attr(755,root,root)
+/%{_libdir}/libwebsockets.so.0.0.3
+/%{_libdir}/libwebsockets.so.0
+/%{_libdir}/libwebsockets.so
+/%{_libdir}/libwebsockets.la
+%attr(755,root,root) /usr/share/libwebsockets-test-server
+%attr(755,root,root) /usr/share/libwebsockets-test-server-extpoll
+%attr(755,root,root) /usr/share/libwebsockets-test-client
+%attr(755,root,root) /usr/share/libwebsockets-test-ping
+%doc
+%files devel
+%defattr(-,root,root,-)
+/usr/include/*
+%attr(755,root,root)
+/%{_libdir}/libwebsockets.a
+
+%changelog
+
--- /dev/null
+#!/usr/bin/perl -w
+
+use strict;
+
+## Copyright (c) 1998 Michael Zucchi, All Rights Reserved ##
+## Copyright (C) 2000, 1 Tim Waugh <twaugh@redhat.com> ##
+## Copyright (C) 2001 Simon Huggins ##
+## Copyright (C) 2005-2009 Randy Dunlap ##
+## ##
+## #define enhancements by Armin Kuster <akuster@mvista.com> ##
+## Copyright (c) 2000 MontaVista Software, Inc. ##
+## ##
+## This software falls under the GNU General Public License. ##
+## Please read the COPYING file for more information ##
+
+# w.o. 03-11-2000: added the '-filelist' option.
+
+# 18/01/2001 - Cleanups
+# Functions prototyped as foo(void) same as foo()
+# Stop eval'ing where we don't need to.
+# -- huggie@earth.li
+
+# 27/06/2001 - Allowed whitespace after initial "/**" and
+# allowed comments before function declarations.
+# -- Christian Kreibich <ck@whoop.org>
+
+# Still to do:
+# - add perldoc documentation
+# - Look more closely at some of the scarier bits :)
+
+# 26/05/2001 - Support for separate source and object trees.
+# Return error code.
+# Keith Owens <kaos@ocs.com.au>
+
+# 23/09/2001 - Added support for typedefs, structs, enums and unions
+# Support for Context section; can be terminated using empty line
+# Small fixes (like spaces vs. \s in regex)
+# -- Tim Jansen <tim@tjansen.de>
+
+
+#
+# This will read a 'c' file and scan for embedded comments in the
+# style of gnome comments (+minor extensions - see below).
+#
+
+# Note: This only supports 'c'.
+
+# usage:
+# kernel-doc [ -docbook | -html | -text | -man ] [ -no-doc-sections ]
+# [ -function funcname [ -function funcname ...] ] c file(s)s > outputfile
+# or
+# [ -nofunction funcname [ -function funcname ...] ] c file(s)s > outputfile
+#
+# Set output format using one of -docbook -html -text or -man. Default is man.
+#
+# -no-doc-sections
+# Do not output DOC: sections
+#
+# -function funcname
+# If set, then only generate documentation for the given function(s) or
+# DOC: section titles. All other functions and DOC: sections are ignored.
+#
+# -nofunction funcname
+# If set, then only generate documentation for the other function(s)/DOC:
+# sections. Cannot be used together with -function (yes, that's a bug --
+# perl hackers can fix it 8))
+#
+# c files - list of 'c' files to process
+#
+# All output goes to stdout, with errors to stderr.
+
+#
+# format of comments.
+# In the following table, (...)? signifies optional structure.
+# (...)* signifies 0 or more structure elements
+# /**
+# * function_name(:)? (- short description)?
+# (* @parameterx: (description of parameter x)?)*
+# (* a blank line)?
+# * (Description:)? (Description of function)?
+# * (section header: (section description)? )*
+# (*)?*/
+#
+# So .. the trivial example would be:
+#
+# /**
+# * my_function
+# */
+#
+# If the Description: header tag is omitted, then there must be a blank line
+# after the last parameter specification.
+# e.g.
+# /**
+# * my_function - does my stuff
+# * @my_arg: its mine damnit
+# *
+# * Does my stuff explained.
+# */
+#
+# or, could also use:
+# /**
+# * my_function - does my stuff
+# * @my_arg: its mine damnit
+# * Description: Does my stuff explained.
+# */
+# etc.
+#
+# Besides functions you can also write documentation for structs, unions,
+# enums and typedefs. Instead of the function name you must write the name
+# of the declaration; the struct/union/enum/typedef must always precede
+# the name. Nesting of declarations is not supported.
+# Use the argument mechanism to document members or constants.
+# e.g.
+# /**
+# * struct my_struct - short description
+# * @a: first member
+# * @b: second member
+# *
+# * Longer description
+# */
+# struct my_struct {
+# int a;
+# int b;
+# /* private: */
+# int c;
+# };
+#
+# All descriptions can be multiline, except the short function description.
+#
+# You can also add additional sections. When documenting kernel functions you
+# should document the "Context:" of the function, e.g. whether the functions
+# can be called form interrupts. Unlike other sections you can end it with an
+# empty line.
+# Example-sections should contain the string EXAMPLE so that they are marked
+# appropriately in DocBook.
+#
+# Example:
+# /**
+# * user_function - function that can only be called in user context
+# * @a: some argument
+# * Context: !in_interrupt()
+# *
+# * Some description
+# * Example:
+# * user_function(22);
+# */
+# ...
+#
+#
+# All descriptive text is further processed, scanning for the following special
+# patterns, which are highlighted appropriately.
+#
+# 'funcname()' - function
+# '$ENVVAR' - environmental variable
+# '&struct_name' - name of a structure (up to two words including 'struct')
+# '@parameter' - name of a parameter
+# '%CONST' - name of a constant.
+
+my $errors = 0;
+my $warnings = 0;
+my $anon_struct_union = 0;
+
+# match expressions used to find embedded type information
+my $type_constant = '\%([-_\w]+)';
+my $type_func = '(\w+)\(\)';
+my $type_param = '\@(\w+)';
+my $type_struct = '\&((struct\s*)*[_\w]+)';
+my $type_struct_xml = '\\&((struct\s*)*[_\w]+)';
+my $type_env = '(\$\w+)';
+
+# Output conversion substitutions.
+# One for each output format
+
+# these work fairly well
+my %highlights_html = ( $type_constant, "<i>\$1</i>",
+ $type_func, "<b>\$1</b>",
+ $type_struct_xml, "<i>\$1</i>",
+ $type_env, "<b><i>\$1</i></b>",
+ $type_param, "<tt><b>\$1</b></tt>" );
+my $local_lt = "\\\\\\\\lt:";
+my $local_gt = "\\\\\\\\gt:";
+my $blankline_html = $local_lt . "p" . $local_gt; # was "<p>"
+
+# XML, docbook format
+my %highlights_xml = ( "([^=])\\\"([^\\\"<]+)\\\"", "\$1<quote>\$2</quote>",
+ $type_constant, "<constant>\$1</constant>",
+ $type_func, "<function>\$1</function>",
+ $type_struct_xml, "<structname>\$1</structname>",
+ $type_env, "<envar>\$1</envar>",
+ $type_param, "<parameter>\$1</parameter>" );
+my $blankline_xml = $local_lt . "/para" . $local_gt . $local_lt . "para" . $local_gt . "\n";
+
+# gnome, docbook format
+my %highlights_gnome = ( $type_constant, "<replaceable class=\"option\">\$1</replaceable>",
+ $type_func, "<function>\$1</function>",
+ $type_struct, "<structname>\$1</structname>",
+ $type_env, "<envar>\$1</envar>",
+ $type_param, "<parameter>\$1</parameter>" );
+my $blankline_gnome = "</para><para>\n";
+
+# these are pretty rough
+my %highlights_man = ( $type_constant, "\$1",
+ $type_func, "\\\\fB\$1\\\\fP",
+ $type_struct, "\\\\fI\$1\\\\fP",
+ $type_param, "\\\\fI\$1\\\\fP" );
+my $blankline_man = "";
+
+# text-mode
+my %highlights_text = ( $type_constant, "\$1",
+ $type_func, "\$1",
+ $type_struct, "\$1",
+ $type_param, "\$1" );
+my $blankline_text = "";
+
+
+sub usage {
+ print "Usage: $0 [ -v ] [ -docbook | -html | -text | -man ] [ -no-doc-sections ]\n";
+ print " [ -function funcname [ -function funcname ...] ]\n";
+ print " [ -nofunction funcname [ -nofunction funcname ...] ]\n";
+ print " c source file(s) > outputfile\n";
+ print " -v : verbose output, more warnings & other info listed\n";
+ exit 1;
+}
+
+# read arguments
+if ($#ARGV == -1) {
+ usage();
+}
+
+my $verbose = 0;
+my $output_mode = "man";
+my $no_doc_sections = 0;
+my %highlights = %highlights_man;
+my $blankline = $blankline_man;
+my $modulename = "Kernel API";
+my $function_only = 0;
+my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
+ 'July', 'August', 'September', 'October',
+ 'November', 'December')[(localtime)[4]] .
+ " " . ((localtime)[5]+1900);
+
+# Essentially these are globals
+# They probably want to be tidied up, made more localised or something.
+# CAVEAT EMPTOR! Some of the others I localised may not want to be, which
+# could cause "use of undefined value" or other bugs.
+my ($function, %function_table, %parametertypes, $declaration_purpose);
+my ($type, $declaration_name, $return_type);
+my ($newsection, $newcontents, $prototype, $filelist, $brcount, %source_map);
+
+if (defined($ENV{'KBUILD_VERBOSE'})) {
+ $verbose = "$ENV{'KBUILD_VERBOSE'}";
+}
+
+# Generated docbook code is inserted in a template at a point where
+# docbook v3.1 requires a non-zero sequence of RefEntry's; see:
+# http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
+# We keep track of number of generated entries and generate a dummy
+# if needs be to ensure the expanded template can be postprocessed
+# into html.
+my $section_counter = 0;
+
+my $lineprefix="";
+
+# states
+# 0 - normal code
+# 1 - looking for function name
+# 2 - scanning field start.
+# 3 - scanning prototype.
+# 4 - documentation block
+my $state;
+my $in_doc_sect;
+
+#declaration types: can be
+# 'function', 'struct', 'union', 'enum', 'typedef'
+my $decl_type;
+
+my $doc_special = "\@\%\$\&";
+
+my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
+my $doc_end = '\*/';
+my $doc_com = '\s*\*\s*';
+my $doc_decl = $doc_com . '(\w+)';
+my $doc_sect = $doc_com . '([' . $doc_special . ']?[\w\s]+):(.*)';
+my $doc_content = $doc_com . '(.*)';
+my $doc_block = $doc_com . 'DOC:\s*(.*)?';
+
+my %constants;
+my %parameterdescs;
+my @parameterlist;
+my %sections;
+my @sectionlist;
+my $sectcheck;
+my $struct_actual;
+
+my $contents = "";
+my $section_default = "Description"; # default section
+my $section_intro = "Introduction";
+my $section = $section_default;
+my $section_context = "Context";
+
+my $undescribed = "-- undescribed --";
+
+reset_state();
+
+while ($ARGV[0] =~ m/^-(.*)/) {
+ my $cmd = shift @ARGV;
+ if ($cmd eq "-html") {
+ $output_mode = "html";
+ %highlights = %highlights_html;
+ $blankline = $blankline_html;
+ } elsif ($cmd eq "-man") {
+ $output_mode = "man";
+ %highlights = %highlights_man;
+ $blankline = $blankline_man;
+ } elsif ($cmd eq "-text") {
+ $output_mode = "text";
+ %highlights = %highlights_text;
+ $blankline = $blankline_text;
+ } elsif ($cmd eq "-docbook") {
+ $output_mode = "xml";
+ %highlights = %highlights_xml;
+ $blankline = $blankline_xml;
+ } elsif ($cmd eq "-gnome") {
+ $output_mode = "gnome";
+ %highlights = %highlights_gnome;
+ $blankline = $blankline_gnome;
+ } elsif ($cmd eq "-module") { # not needed for XML, inherits from calling document
+ $modulename = shift @ARGV;
+ } elsif ($cmd eq "-function") { # to only output specific functions
+ $function_only = 1;
+ $function = shift @ARGV;
+ $function_table{$function} = 1;
+ } elsif ($cmd eq "-nofunction") { # to only output specific functions
+ $function_only = 2;
+ $function = shift @ARGV;
+ $function_table{$function} = 1;
+ } elsif ($cmd eq "-v") {
+ $verbose = 1;
+ } elsif (($cmd eq "-h") || ($cmd eq "--help")) {
+ usage();
+ } elsif ($cmd eq '-filelist') {
+ $filelist = shift @ARGV;
+ } elsif ($cmd eq '-no-doc-sections') {
+ $no_doc_sections = 1;
+ }
+}
+
+# get kernel version from env
+sub get_kernel_version() {
+ my $version = 'unknown kernel version';
+
+ if (defined($ENV{'KERNELVERSION'})) {
+ $version = $ENV{'KERNELVERSION'};
+ }
+ return $version;
+}
+my $kernelversion = get_kernel_version();
+
+# generate a sequence of code that will splice in highlighting information
+# using the s// operator.
+my $dohighlight = "";
+foreach my $pattern (keys %highlights) {
+# print STDERR "scanning pattern:$pattern, highlight:($highlights{$pattern})\n";
+ $dohighlight .= "\$contents =~ s:$pattern:$highlights{$pattern}:gs;\n";
+}
+
+##
+# dumps section contents to arrays/hashes intended for that purpose.
+#
+sub dump_section {
+ my $file = shift;
+ my $name = shift;
+ my $contents = join "\n", @_;
+
+ if ($name =~ m/$type_constant/) {
+ $name = $1;
+# print STDERR "constant section '$1' = '$contents'\n";
+ $constants{$name} = $contents;
+ } elsif ($name =~ m/$type_param/) {
+# print STDERR "parameter def '$1' = '$contents'\n";
+ $name = $1;
+ $parameterdescs{$name} = $contents;
+ $sectcheck = $sectcheck . $name . " ";
+ } elsif ($name eq "@\.\.\.") {
+# print STDERR "parameter def '...' = '$contents'\n";
+ $name = "...";
+ $parameterdescs{$name} = $contents;
+ $sectcheck = $sectcheck . $name . " ";
+ } else {
+# print STDERR "other section '$name' = '$contents'\n";
+ if (defined($sections{$name}) && ($sections{$name} ne "")) {
+ print STDERR "Error(${file}:$.): duplicate section name '$name'\n";
+ ++$errors;
+ }
+ $sections{$name} = $contents;
+ push @sectionlist, $name;
+ }
+}
+
+##
+# dump DOC: section after checking that it should go out
+#
+sub dump_doc_section {
+ my $file = shift;
+ my $name = shift;
+ my $contents = join "\n", @_;
+
+ if ($no_doc_sections) {
+ return;
+ }
+
+ if (($function_only == 0) ||
+ ( $function_only == 1 && defined($function_table{$name})) ||
+ ( $function_only == 2 && !defined($function_table{$name})))
+ {
+ dump_section($file, $name, $contents);
+ output_blockhead({'sectionlist' => \@sectionlist,
+ 'sections' => \%sections,
+ 'module' => $modulename,
+ 'content-only' => ($function_only != 0), });
+ }
+}
+
+##
+# output function
+#
+# parameterdescs, a hash.
+# function => "function name"
+# parameterlist => @list of parameters
+# parameterdescs => %parameter descriptions
+# sectionlist => @list of sections
+# sections => %section descriptions
+#
+
+sub output_highlight {
+ my $contents = join "\n",@_;
+ my $line;
+
+# DEBUG
+# if (!defined $contents) {
+# use Carp;
+# confess "output_highlight got called with no args?\n";
+# }
+
+ if ($output_mode eq "html" || $output_mode eq "xml") {
+ $contents = local_unescape($contents);
+ # convert data read & converted thru xml_escape() into &xyz; format:
+ $contents =~ s/\\\\\\/&/g;
+ }
+# print STDERR "contents b4:$contents\n";
+ eval $dohighlight;
+ die $@ if $@;
+# print STDERR "contents af:$contents\n";
+
+ foreach $line (split "\n", $contents) {
+ if ($line eq ""){
+ print $lineprefix, local_unescape($blankline);
+ } else {
+ $line =~ s/\\\\\\/\&/g;
+ if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
+ print "\\&$line";
+ } else {
+ print $lineprefix, $line;
+ }
+ }
+ print "\n";
+ }
+}
+
+#output sections in html
+sub output_section_html(%) {
+ my %args = %{$_[0]};
+ my $section;
+
+ foreach $section (@{$args{'sectionlist'}}) {
+ print "<h3>$section</h3>\n";
+ print "<blockquote>\n";
+ output_highlight($args{'sections'}{$section});
+ print "</blockquote>\n";
+ }
+}
+
+# output enum in html
+sub output_enum_html(%) {
+ my %args = %{$_[0]};
+ my ($parameter);
+ my $count;
+ print "<h2>enum " . $args{'enum'} . "</h2>\n";
+
+ print "<b>enum " . $args{'enum'} . "</b> {<br>\n";
+ $count = 0;
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ print " <b>" . $parameter . "</b>";
+ if ($count != $#{$args{'parameterlist'}}) {
+ $count++;
+ print ",\n";
+ }
+ print "<br>";
+ }
+ print "};<br>\n";
+
+ print "<h3>Constants</h3>\n";
+ print "<dl>\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ print "<dt><b>" . $parameter . "</b>\n";
+ print "<dd>";
+ output_highlight($args{'parameterdescs'}{$parameter});
+ }
+ print "</dl>\n";
+ output_section_html(@_);
+ print "<hr>\n";
+}
+
+# output typedef in html
+sub output_typedef_html(%) {
+ my %args = %{$_[0]};
+ my ($parameter);
+ my $count;
+ print "<h2>typedef " . $args{'typedef'} . "</h2>\n";
+
+ print "<b>typedef " . $args{'typedef'} . "</b>\n";
+ output_section_html(@_);
+ print "<hr>\n";
+}
+
+# output struct in html
+sub output_struct_html(%) {
+ my %args = %{$_[0]};
+ my ($parameter);
+
+ print "<h2>" . $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "</h2>\n";
+ print "<b>" . $args{'type'} . " " . $args{'struct'} . "</b> {<br>\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ if ($parameter =~ /^#/) {
+ print "$parameter<br>\n";
+ next;
+ }
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+ $type = $args{'parametertypes'}{$parameter};
+ if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+ # pointer-to-function
+ print " <i>$1</i><b>$parameter</b>) <i>($2)</i>;<br>\n";
+ } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+ # bitfield
+ print " <i>$1</i> <b>$parameter</b>$2;<br>\n";
+ } else {
+ print " <i>$type</i> <b>$parameter</b>;<br>\n";
+ }
+ }
+ print "};<br>\n";
+
+ print "<h3>Members</h3>\n";
+ print "<dl>\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ ($parameter =~ /^#/) && next;
+
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+ print "<dt><b>" . $parameter . "</b>\n";
+ print "<dd>";
+ output_highlight($args{'parameterdescs'}{$parameter_name});
+ }
+ print "</dl>\n";
+ output_section_html(@_);
+ print "<hr>\n";
+}
+
+# output function in html
+sub output_function_html(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $count;
+
+ print "<h2>" . $args{'function'} . " - " . $args{'purpose'} . "</h2>\n";
+ print "<i>" . $args{'functiontype'} . "</i>\n";
+ print "<b>" . $args{'function'} . "</b>\n";
+ print "(";
+ $count = 0;
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ $type = $args{'parametertypes'}{$parameter};
+ if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+ # pointer-to-function
+ print "<i>$1</i><b>$parameter</b>) <i>($2)</i>";
+ } else {
+ print "<i>" . $type . "</i> <b>" . $parameter . "</b>";
+ }
+ if ($count != $#{$args{'parameterlist'}}) {
+ $count++;
+ print ",\n";
+ }
+ }
+ print ")\n";
+
+ print "<h3>Arguments</h3>\n";
+ print "<dl>\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+ print "<dt><b>" . $parameter . "</b>\n";
+ print "<dd>";
+ output_highlight($args{'parameterdescs'}{$parameter_name});
+ }
+ print "</dl>\n";
+ output_section_html(@_);
+ print "<hr>\n";
+}
+
+# output DOC: block header in html
+sub output_blockhead_html(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $count;
+
+ foreach $section (@{$args{'sectionlist'}}) {
+ print "<h3>$section</h3>\n";
+ print "<ul>\n";
+ output_highlight($args{'sections'}{$section});
+ print "</ul>\n";
+ }
+ print "<hr>\n";
+}
+
+sub output_section_xml(%) {
+ my %args = %{$_[0]};
+ my $section;
+ # print out each section
+ $lineprefix=" ";
+ foreach $section (@{$args{'sectionlist'}}) {
+ print "<refsect1>\n";
+ print "<title>$section</title>\n";
+ if ($section =~ m/EXAMPLE/i) {
+ print "<informalexample><programlisting>\n";
+ } else {
+ print "<para>\n";
+ }
+ output_highlight($args{'sections'}{$section});
+ if ($section =~ m/EXAMPLE/i) {
+ print "</programlisting></informalexample>\n";
+ } else {
+ print "</para>\n";
+ }
+ print "</refsect1>\n";
+ }
+}
+
+# output function in XML DocBook
+sub output_function_xml(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $count;
+ my $id;
+
+ $id = "API-" . $args{'function'};
+ $id =~ s/[^A-Za-z0-9]/-/g;
+
+ print "<refentry id=\"$id\">\n";
+ print "<refentryinfo>\n";
+ print " <title>LINUX</title>\n";
+ print " <productname>Kernel Hackers Manual</productname>\n";
+ print " <date>$man_date</date>\n";
+ print "</refentryinfo>\n";
+ print "<refmeta>\n";
+ print " <refentrytitle><phrase>" . $args{'function'} . "</phrase></refentrytitle>\n";
+ print " <manvolnum>9</manvolnum>\n";
+ print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
+ print "</refmeta>\n";
+ print "<refnamediv>\n";
+ print " <refname>" . $args{'function'} . "</refname>\n";
+ print " <refpurpose>\n";
+ print " ";
+ output_highlight ($args{'purpose'});
+ print " </refpurpose>\n";
+ print "</refnamediv>\n";
+
+ print "<refsynopsisdiv>\n";
+ print " <title>Synopsis</title>\n";
+ print " <funcsynopsis><funcprototype>\n";
+ print " <funcdef>" . $args{'functiontype'} . " ";
+ print "<function>" . $args{'function'} . " </function></funcdef>\n";
+
+ $count = 0;
+ if ($#{$args{'parameterlist'}} >= 0) {
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ $type = $args{'parametertypes'}{$parameter};
+ if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+ # pointer-to-function
+ print " <paramdef>$1<parameter>$parameter</parameter>)\n";
+ print " <funcparams>$2</funcparams></paramdef>\n";
+ } else {
+ print " <paramdef>" . $type;
+ print " <parameter>$parameter</parameter></paramdef>\n";
+ }
+ }
+ } else {
+ print " <void/>\n";
+ }
+ print " </funcprototype></funcsynopsis>\n";
+ print "</refsynopsisdiv>\n";
+
+ # print parameters
+ print "<refsect1>\n <title>Arguments</title>\n";
+ if ($#{$args{'parameterlist'}} >= 0) {
+ print " <variablelist>\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ print " <varlistentry>\n <term><parameter>$parameter</parameter></term>\n";
+ print " <listitem>\n <para>\n";
+ $lineprefix=" ";
+ output_highlight($args{'parameterdescs'}{$parameter_name});
+ print " </para>\n </listitem>\n </varlistentry>\n";
+ }
+ print " </variablelist>\n";
+ } else {
+ print " <para>\n None\n </para>\n";
+ }
+ print "</refsect1>\n";
+
+ output_section_xml(@_);
+ print "</refentry>\n\n";
+}
+
+# output struct in XML DocBook
+sub output_struct_xml(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $id;
+
+ $id = "API-struct-" . $args{'struct'};
+ $id =~ s/[^A-Za-z0-9]/-/g;
+
+ print "<refentry id=\"$id\">\n";
+ print "<refentryinfo>\n";
+ print " <title>LINUX</title>\n";
+ print " <productname>Kernel Hackers Manual</productname>\n";
+ print " <date>$man_date</date>\n";
+ print "</refentryinfo>\n";
+ print "<refmeta>\n";
+ print " <refentrytitle><phrase>" . $args{'type'} . " " . $args{'struct'} . "</phrase></refentrytitle>\n";
+ print " <manvolnum>9</manvolnum>\n";
+ print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
+ print "</refmeta>\n";
+ print "<refnamediv>\n";
+ print " <refname>" . $args{'type'} . " " . $args{'struct'} . "</refname>\n";
+ print " <refpurpose>\n";
+ print " ";
+ output_highlight ($args{'purpose'});
+ print " </refpurpose>\n";
+ print "</refnamediv>\n";
+
+ print "<refsynopsisdiv>\n";
+ print " <title>Synopsis</title>\n";
+ print " <programlisting>\n";
+ print $args{'type'} . " " . $args{'struct'} . " {\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ if ($parameter =~ /^#/) {
+ print "$parameter\n";
+ next;
+ }
+
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ defined($args{'parameterdescs'}{$parameter_name}) || next;
+ ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+ $type = $args{'parametertypes'}{$parameter};
+ if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+ # pointer-to-function
+ print " $1 $parameter) ($2);\n";
+ } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+ # bitfield
+ print " $1 $parameter$2;\n";
+ } else {
+ print " " . $type . " " . $parameter . ";\n";
+ }
+ }
+ print "};";
+ print " </programlisting>\n";
+ print "</refsynopsisdiv>\n";
+
+ print " <refsect1>\n";
+ print " <title>Members</title>\n";
+
+ if ($#{$args{'parameterlist'}} >= 0) {
+ print " <variablelist>\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ ($parameter =~ /^#/) && next;
+
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ defined($args{'parameterdescs'}{$parameter_name}) || next;
+ ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+ print " <varlistentry>";
+ print " <term>$parameter</term>\n";
+ print " <listitem><para>\n";
+ output_highlight($args{'parameterdescs'}{$parameter_name});
+ print " </para></listitem>\n";
+ print " </varlistentry>\n";
+ }
+ print " </variablelist>\n";
+ } else {
+ print " <para>\n None\n </para>\n";
+ }
+ print " </refsect1>\n";
+
+ output_section_xml(@_);
+
+ print "</refentry>\n\n";
+}
+
+# output enum in XML DocBook
+sub output_enum_xml(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $count;
+ my $id;
+
+ $id = "API-enum-" . $args{'enum'};
+ $id =~ s/[^A-Za-z0-9]/-/g;
+
+ print "<refentry id=\"$id\">\n";
+ print "<refentryinfo>\n";
+ print " <title>LINUX</title>\n";
+ print " <productname>Kernel Hackers Manual</productname>\n";
+ print " <date>$man_date</date>\n";
+ print "</refentryinfo>\n";
+ print "<refmeta>\n";
+ print " <refentrytitle><phrase>enum " . $args{'enum'} . "</phrase></refentrytitle>\n";
+ print " <manvolnum>9</manvolnum>\n";
+ print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
+ print "</refmeta>\n";
+ print "<refnamediv>\n";
+ print " <refname>enum " . $args{'enum'} . "</refname>\n";
+ print " <refpurpose>\n";
+ print " ";
+ output_highlight ($args{'purpose'});
+ print " </refpurpose>\n";
+ print "</refnamediv>\n";
+
+ print "<refsynopsisdiv>\n";
+ print " <title>Synopsis</title>\n";
+ print " <programlisting>\n";
+ print "enum " . $args{'enum'} . " {\n";
+ $count = 0;
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ print " $parameter";
+ if ($count != $#{$args{'parameterlist'}}) {
+ $count++;
+ print ",";
+ }
+ print "\n";
+ }
+ print "};";
+ print " </programlisting>\n";
+ print "</refsynopsisdiv>\n";
+
+ print "<refsect1>\n";
+ print " <title>Constants</title>\n";
+ print " <variablelist>\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ print " <varlistentry>";
+ print " <term>$parameter</term>\n";
+ print " <listitem><para>\n";
+ output_highlight($args{'parameterdescs'}{$parameter_name});
+ print " </para></listitem>\n";
+ print " </varlistentry>\n";
+ }
+ print " </variablelist>\n";
+ print "</refsect1>\n";
+
+ output_section_xml(@_);
+
+ print "</refentry>\n\n";
+}
+
+# output typedef in XML DocBook
+sub output_typedef_xml(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $id;
+
+ $id = "API-typedef-" . $args{'typedef'};
+ $id =~ s/[^A-Za-z0-9]/-/g;
+
+ print "<refentry id=\"$id\">\n";
+ print "<refentryinfo>\n";
+ print " <title>LINUX</title>\n";
+ print " <productname>Kernel Hackers Manual</productname>\n";
+ print " <date>$man_date</date>\n";
+ print "</refentryinfo>\n";
+ print "<refmeta>\n";
+ print " <refentrytitle><phrase>typedef " . $args{'typedef'} . "</phrase></refentrytitle>\n";
+ print " <manvolnum>9</manvolnum>\n";
+ print "</refmeta>\n";
+ print "<refnamediv>\n";
+ print " <refname>typedef " . $args{'typedef'} . "</refname>\n";
+ print " <refpurpose>\n";
+ print " ";
+ output_highlight ($args{'purpose'});
+ print " </refpurpose>\n";
+ print "</refnamediv>\n";
+
+ print "<refsynopsisdiv>\n";
+ print " <title>Synopsis</title>\n";
+ print " <synopsis>typedef " . $args{'typedef'} . ";</synopsis>\n";
+ print "</refsynopsisdiv>\n";
+
+ output_section_xml(@_);
+
+ print "</refentry>\n\n";
+}
+
+# output in XML DocBook
+sub output_blockhead_xml(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $count;
+
+ my $id = $args{'module'};
+ $id =~ s/[^A-Za-z0-9]/-/g;
+
+ # print out each section
+ $lineprefix=" ";
+ foreach $section (@{$args{'sectionlist'}}) {
+ if (!$args{'content-only'}) {
+ print "<refsect1>\n <title>$section</title>\n";
+ }
+ if ($section =~ m/EXAMPLE/i) {
+ print "<example><para>\n";
+ } else {
+ print "<para>\n";
+ }
+ output_highlight($args{'sections'}{$section});
+ if ($section =~ m/EXAMPLE/i) {
+ print "</para></example>\n";
+ } else {
+ print "</para>";
+ }
+ if (!$args{'content-only'}) {
+ print "\n</refsect1>\n";
+ }
+ }
+
+ print "\n\n";
+}
+
+# output in XML DocBook
+sub output_function_gnome {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $count;
+ my $id;
+
+ $id = $args{'module'} . "-" . $args{'function'};
+ $id =~ s/[^A-Za-z0-9]/-/g;
+
+ print "<sect2>\n";
+ print " <title id=\"$id\">" . $args{'function'} . "</title>\n";
+
+ print " <funcsynopsis>\n";
+ print " <funcdef>" . $args{'functiontype'} . " ";
+ print "<function>" . $args{'function'} . " ";
+ print "</function></funcdef>\n";
+
+ $count = 0;
+ if ($#{$args{'parameterlist'}} >= 0) {
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ $type = $args{'parametertypes'}{$parameter};
+ if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+ # pointer-to-function
+ print " <paramdef>$1 <parameter>$parameter</parameter>)\n";
+ print " <funcparams>$2</funcparams></paramdef>\n";
+ } else {
+ print " <paramdef>" . $type;
+ print " <parameter>$parameter</parameter></paramdef>\n";
+ }
+ }
+ } else {
+ print " <void>\n";
+ }
+ print " </funcsynopsis>\n";
+ if ($#{$args{'parameterlist'}} >= 0) {
+ print " <informaltable pgwide=\"1\" frame=\"none\" role=\"params\">\n";
+ print "<tgroup cols=\"2\">\n";
+ print "<colspec colwidth=\"2*\">\n";
+ print "<colspec colwidth=\"8*\">\n";
+ print "<tbody>\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ print " <row><entry align=\"right\"><parameter>$parameter</parameter></entry>\n";
+ print " <entry>\n";
+ $lineprefix=" ";
+ output_highlight($args{'parameterdescs'}{$parameter_name});
+ print " </entry></row>\n";
+ }
+ print " </tbody></tgroup></informaltable>\n";
+ } else {
+ print " <para>\n None\n </para>\n";
+ }
+
+ # print out each section
+ $lineprefix=" ";
+ foreach $section (@{$args{'sectionlist'}}) {
+ print "<simplesect>\n <title>$section</title>\n";
+ if ($section =~ m/EXAMPLE/i) {
+ print "<example><programlisting>\n";
+ } else {
+ }
+ print "<para>\n";
+ output_highlight($args{'sections'}{$section});
+ print "</para>\n";
+ if ($section =~ m/EXAMPLE/i) {
+ print "</programlisting></example>\n";
+ } else {
+ }
+ print " </simplesect>\n";
+ }
+
+ print "</sect2>\n\n";
+}
+
+##
+# output function in man
+sub output_function_man(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $count;
+
+ print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
+
+ print ".SH NAME\n";
+ print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
+
+ print ".SH SYNOPSIS\n";
+ if ($args{'functiontype'} ne "") {
+ print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
+ } else {
+ print ".B \"" . $args{'function'} . "\n";
+ }
+ $count = 0;
+ my $parenth = "(";
+ my $post = ",";
+ foreach my $parameter (@{$args{'parameterlist'}}) {
+ if ($count == $#{$args{'parameterlist'}}) {
+ $post = ");";
+ }
+ $type = $args{'parametertypes'}{$parameter};
+ if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+ # pointer-to-function
+ print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
+ } else {
+ $type =~ s/([^\*])$/$1 /;
+ print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
+ }
+ $count++;
+ $parenth = "";
+ }
+
+ print ".SH ARGUMENTS\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ print ".IP \"" . $parameter . "\" 12\n";
+ output_highlight($args{'parameterdescs'}{$parameter_name});
+ }
+ foreach $section (@{$args{'sectionlist'}}) {
+ print ".SH \"", uc $section, "\"\n";
+ output_highlight($args{'sections'}{$section});
+ }
+}
+
+##
+# output enum in man
+sub output_enum_man(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $count;
+
+ print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
+
+ print ".SH NAME\n";
+ print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
+
+ print ".SH SYNOPSIS\n";
+ print "enum " . $args{'enum'} . " {\n";
+ $count = 0;
+ foreach my $parameter (@{$args{'parameterlist'}}) {
+ print ".br\n.BI \" $parameter\"\n";
+ if ($count == $#{$args{'parameterlist'}}) {
+ print "\n};\n";
+ last;
+ }
+ else {
+ print ", \n.br\n";
+ }
+ $count++;
+ }
+
+ print ".SH Constants\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ print ".IP \"" . $parameter . "\" 12\n";
+ output_highlight($args{'parameterdescs'}{$parameter_name});
+ }
+ foreach $section (@{$args{'sectionlist'}}) {
+ print ".SH \"$section\"\n";
+ output_highlight($args{'sections'}{$section});
+ }
+}
+
+##
+# output struct in man
+sub output_struct_man(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+
+ print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
+
+ print ".SH NAME\n";
+ print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
+
+ print ".SH SYNOPSIS\n";
+ print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
+
+ foreach my $parameter (@{$args{'parameterlist'}}) {
+ if ($parameter =~ /^#/) {
+ print ".BI \"$parameter\"\n.br\n";
+ next;
+ }
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+ $type = $args{'parametertypes'}{$parameter};
+ if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+ # pointer-to-function
+ print ".BI \" " . $1 . "\" " . $parameter . " \") (" . $2 . ")" . "\"\n;\n";
+ } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+ # bitfield
+ print ".BI \" " . $1 . "\ \" " . $parameter . $2 . " \"" . "\"\n;\n";
+ } else {
+ $type =~ s/([^\*])$/$1 /;
+ print ".BI \" " . $type . "\" " . $parameter . " \"" . "\"\n;\n";
+ }
+ print "\n.br\n";
+ }
+ print "};\n.br\n";
+
+ print ".SH Members\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ ($parameter =~ /^#/) && next;
+
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+ print ".IP \"" . $parameter . "\" 12\n";
+ output_highlight($args{'parameterdescs'}{$parameter_name});
+ }
+ foreach $section (@{$args{'sectionlist'}}) {
+ print ".SH \"$section\"\n";
+ output_highlight($args{'sections'}{$section});
+ }
+}
+
+##
+# output typedef in man
+sub output_typedef_man(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+
+ print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
+
+ print ".SH NAME\n";
+ print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
+
+ foreach $section (@{$args{'sectionlist'}}) {
+ print ".SH \"$section\"\n";
+ output_highlight($args{'sections'}{$section});
+ }
+}
+
+sub output_blockhead_man(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $count;
+
+ print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
+
+ foreach $section (@{$args{'sectionlist'}}) {
+ print ".SH \"$section\"\n";
+ output_highlight($args{'sections'}{$section});
+ }
+}
+
+##
+# output in text
+sub output_function_text(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $start;
+
+ print "Name:\n\n";
+ print $args{'function'} . " - " . $args{'purpose'} . "\n";
+
+ print "\nSynopsis:\n\n";
+ if ($args{'functiontype'} ne "") {
+ $start = $args{'functiontype'} . " " . $args{'function'} . " (";
+ } else {
+ $start = $args{'function'} . " (";
+ }
+ print $start;
+
+ my $count = 0;
+ foreach my $parameter (@{$args{'parameterlist'}}) {
+ $type = $args{'parametertypes'}{$parameter};
+ if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+ # pointer-to-function
+ print $1 . $parameter . ") (" . $2;
+ } else {
+ print $type . " " . $parameter;
+ }
+ if ($count != $#{$args{'parameterlist'}}) {
+ $count++;
+ print ",\n";
+ print " " x length($start);
+ } else {
+ print ");\n\n";
+ }
+ }
+
+ print "Arguments:\n\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ print $parameter . "\n\t" . $args{'parameterdescs'}{$parameter_name} . "\n";
+ }
+ output_section_text(@_);
+}
+
+#output sections in text
+sub output_section_text(%) {
+ my %args = %{$_[0]};
+ my $section;
+
+ print "\n";
+ foreach $section (@{$args{'sectionlist'}}) {
+ print "$section:\n\n";
+ output_highlight($args{'sections'}{$section});
+ }
+ print "\n\n";
+}
+
+# output enum in text
+sub output_enum_text(%) {
+ my %args = %{$_[0]};
+ my ($parameter);
+ my $count;
+ print "Enum:\n\n";
+
+ print "enum " . $args{'enum'} . " - " . $args{'purpose'} . "\n\n";
+ print "enum " . $args{'enum'} . " {\n";
+ $count = 0;
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ print "\t$parameter";
+ if ($count != $#{$args{'parameterlist'}}) {
+ $count++;
+ print ",";
+ }
+ print "\n";
+ }
+ print "};\n\n";
+
+ print "Constants:\n\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ print "$parameter\n\t";
+ print $args{'parameterdescs'}{$parameter} . "\n";
+ }
+
+ output_section_text(@_);
+}
+
+# output typedef in text
+sub output_typedef_text(%) {
+ my %args = %{$_[0]};
+ my ($parameter);
+ my $count;
+ print "Typedef:\n\n";
+
+ print "typedef " . $args{'typedef'} . " - " . $args{'purpose'} . "\n";
+ output_section_text(@_);
+}
+
+# output struct as text
+sub output_struct_text(%) {
+ my %args = %{$_[0]};
+ my ($parameter);
+
+ print $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "\n\n";
+ print $args{'type'} . " " . $args{'struct'} . " {\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ if ($parameter =~ /^#/) {
+ print "$parameter\n";
+ next;
+ }
+
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+ $type = $args{'parametertypes'}{$parameter};
+ if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+ # pointer-to-function
+ print "\t$1 $parameter) ($2);\n";
+ } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+ # bitfield
+ print "\t$1 $parameter$2;\n";
+ } else {
+ print "\t" . $type . " " . $parameter . ";\n";
+ }
+ }
+ print "};\n\n";
+
+ print "Members:\n\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ ($parameter =~ /^#/) && next;
+
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+ print "$parameter\n\t";
+ print $args{'parameterdescs'}{$parameter_name} . "\n";
+ }
+ print "\n";
+ output_section_text(@_);
+}
+
+sub output_blockhead_text(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+
+ foreach $section (@{$args{'sectionlist'}}) {
+ print " $section:\n";
+ print " -> ";
+ output_highlight($args{'sections'}{$section});
+ }
+}
+
+##
+# generic output function for all types (function, struct/union, typedef, enum);
+# calls the generated, variable output_ function name based on
+# functype and output_mode
+sub output_declaration {
+ no strict 'refs';
+ my $name = shift;
+ my $functype = shift;
+ my $func = "output_${functype}_$output_mode";
+ if (($function_only==0) ||
+ ( $function_only == 1 && defined($function_table{$name})) ||
+ ( $function_only == 2 && !defined($function_table{$name})))
+ {
+ &$func(@_);
+ $section_counter++;
+ }
+}
+
+##
+# generic output function - calls the right one based on current output mode.
+sub output_blockhead {
+ no strict 'refs';
+ my $func = "output_blockhead_" . $output_mode;
+ &$func(@_);
+ $section_counter++;
+}
+
+##
+# takes a declaration (struct, union, enum, typedef) and
+# invokes the right handler. NOT called for functions.
+sub dump_declaration($$) {
+ no strict 'refs';
+ my ($prototype, $file) = @_;
+ my $func = "dump_" . $decl_type;
+ &$func(@_);
+}
+
+sub dump_union($$) {
+ dump_struct(@_);
+}
+
+sub dump_struct($$) {
+ my $x = shift;
+ my $file = shift;
+ my $nested;
+
+ if ($x =~ /(struct|union)\s+(\w+)\s*{(.*)}/) {
+ #my $decl_type = $1;
+ $declaration_name = $2;
+ my $members = $3;
+
+ # ignore embedded structs or unions
+ $members =~ s/({.*})//g;
+ $nested = $1;
+
+ # ignore members marked private:
+ $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gos;
+ $members =~ s/\/\*\s*private:.*//gos;
+ # strip comments:
+ $members =~ s/\/\*.*?\*\///gos;
+ $nested =~ s/\/\*.*?\*\///gos;
+ # strip kmemcheck_bitfield_{begin,end}.*;
+ $members =~ s/kmemcheck_bitfield_.*?;//gos;
+
+ create_parameterlist($members, ';', $file);
+ check_sections($file, $declaration_name, "struct", $sectcheck, $struct_actual, $nested);
+
+ output_declaration($declaration_name,
+ 'struct',
+ {'struct' => $declaration_name,
+ 'module' => $modulename,
+ 'parameterlist' => \@parameterlist,
+ 'parameterdescs' => \%parameterdescs,
+ 'parametertypes' => \%parametertypes,
+ 'sectionlist' => \@sectionlist,
+ 'sections' => \%sections,
+ 'purpose' => $declaration_purpose,
+ 'type' => $decl_type
+ });
+ }
+ else {
+ print STDERR "Error(${file}:$.): Cannot parse struct or union!\n";
+ ++$errors;
+ }
+}
+
+sub dump_enum($$) {
+ my $x = shift;
+ my $file = shift;
+
+ $x =~ s@/\*.*?\*/@@gos; # strip comments.
+ if ($x =~ /enum\s+(\w+)\s*{(.*)}/) {
+ $declaration_name = $1;
+ my $members = $2;
+
+ foreach my $arg (split ',', $members) {
+ $arg =~ s/^\s*(\w+).*/$1/;
+ push @parameterlist, $arg;
+ if (!$parameterdescs{$arg}) {
+ $parameterdescs{$arg} = $undescribed;
+ print STDERR "Warning(${file}:$.): Enum value '$arg' ".
+ "not described in enum '$declaration_name'\n";
+ }
+
+ }
+
+ output_declaration($declaration_name,
+ 'enum',
+ {'enum' => $declaration_name,
+ 'module' => $modulename,
+ 'parameterlist' => \@parameterlist,
+ 'parameterdescs' => \%parameterdescs,
+ 'sectionlist' => \@sectionlist,
+ 'sections' => \%sections,
+ 'purpose' => $declaration_purpose
+ });
+ }
+ else {
+ print STDERR "Error(${file}:$.): Cannot parse enum!\n";
+ ++$errors;
+ }
+}
+
+sub dump_typedef($$) {
+ my $x = shift;
+ my $file = shift;
+
+ $x =~ s@/\*.*?\*/@@gos; # strip comments.
+ while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
+ $x =~ s/\(*.\)\s*;$/;/;
+ $x =~ s/\[*.\]\s*;$/;/;
+ }
+
+ if ($x =~ /typedef.*\s+(\w+)\s*;/) {
+ $declaration_name = $1;
+
+ output_declaration($declaration_name,
+ 'typedef',
+ {'typedef' => $declaration_name,
+ 'module' => $modulename,
+ 'sectionlist' => \@sectionlist,
+ 'sections' => \%sections,
+ 'purpose' => $declaration_purpose
+ });
+ }
+ else {
+ print STDERR "Error(${file}:$.): Cannot parse typedef!\n";
+ ++$errors;
+ }
+}
+
+sub save_struct_actual($) {
+ my $actual = shift;
+
+ # strip all spaces from the actual param so that it looks like one string item
+ $actual =~ s/\s*//g;
+ $struct_actual = $struct_actual . $actual . " ";
+}
+
+sub create_parameterlist($$$) {
+ my $args = shift;
+ my $splitter = shift;
+ my $file = shift;
+ my $type;
+ my $param;
+
+ # temporarily replace commas inside function pointer definition
+ while ($args =~ /(\([^\),]+),/) {
+ $args =~ s/(\([^\),]+),/$1#/g;
+ }
+
+ foreach my $arg (split($splitter, $args)) {
+ # strip comments
+ $arg =~ s/\/\*.*\*\///;
+ # strip leading/trailing spaces
+ $arg =~ s/^\s*//;
+ $arg =~ s/\s*$//;
+ $arg =~ s/\s+/ /;
+
+ if ($arg =~ /^#/) {
+ # Treat preprocessor directive as a typeless variable just to fill
+ # corresponding data structures "correctly". Catch it later in
+ # output_* subs.
+ push_parameter($arg, "", $file);
+ } elsif ($arg =~ m/\(.+\)\s*\(/) {
+ # pointer-to-function
+ $arg =~ tr/#/,/;
+ $arg =~ m/[^\(]+\(\*?\s*(\w*)\s*\)/;
+ $param = $1;
+ $type = $arg;
+ $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
+ save_struct_actual($param);
+ push_parameter($param, $type, $file);
+ } elsif ($arg) {
+ $arg =~ s/\s*:\s*/:/g;
+ $arg =~ s/\s*\[/\[/g;
+
+ my @args = split('\s*,\s*', $arg);
+ if ($args[0] =~ m/\*/) {
+ $args[0] =~ s/(\*+)\s*/ $1/;
+ }
+
+ my @first_arg;
+ if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
+ shift @args;
+ push(@first_arg, split('\s+', $1));
+ push(@first_arg, $2);
+ } else {
+ @first_arg = split('\s+', shift @args);
+ }
+
+ unshift(@args, pop @first_arg);
+ $type = join " ", @first_arg;
+
+ foreach $param (@args) {
+ if ($param =~ m/^(\*+)\s*(.*)/) {
+ save_struct_actual($2);
+ push_parameter($2, "$type $1", $file);
+ }
+ elsif ($param =~ m/(.*?):(\d+)/) {
+ if ($type ne "") { # skip unnamed bit-fields
+ save_struct_actual($1);
+ push_parameter($1, "$type:$2", $file)
+ }
+ }
+ else {
+ save_struct_actual($param);
+ push_parameter($param, $type, $file);
+ }
+ }
+ }
+ }
+}
+
+sub push_parameter($$$) {
+ my $param = shift;
+ my $type = shift;
+ my $file = shift;
+
+ if (($anon_struct_union == 1) && ($type eq "") &&
+ ($param eq "}")) {
+ return; # ignore the ending }; from anon. struct/union
+ }
+
+ $anon_struct_union = 0;
+ my $param_name = $param;
+ $param_name =~ s/\[.*//;
+
+ if ($type eq "" && $param =~ /\.\.\.$/)
+ {
+ if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
+ $parameterdescs{$param} = "variable arguments";
+ }
+ }
+ elsif ($type eq "" && ($param eq "" or $param eq "void"))
+ {
+ $param="void";
+ $parameterdescs{void} = "no arguments";
+ }
+ elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
+ # handle unnamed (anonymous) union or struct:
+ {
+ $type = $param;
+ $param = "{unnamed_" . $param . "}";
+ $parameterdescs{$param} = "anonymous\n";
+ $anon_struct_union = 1;
+ }
+
+ # warn if parameter has no description
+ # (but ignore ones starting with # as these are not parameters
+ # but inline preprocessor statements);
+ # also ignore unnamed structs/unions;
+ if (!$anon_struct_union) {
+ if (!defined $parameterdescs{$param_name} && $param_name !~ /^#/) {
+
+ $parameterdescs{$param_name} = $undescribed;
+
+ if (($type eq 'function') || ($type eq 'enum')) {
+ print STDERR "Warning(${file}:$.): Function parameter ".
+ "or member '$param' not " .
+ "described in '$declaration_name'\n";
+ }
+ print STDERR "Warning(${file}:$.):" .
+ " No description found for parameter '$param'\n";
+ ++$warnings;
+ }
+ }
+
+ # strip spaces from $param so that it is one continous string
+ # on @parameterlist;
+ # this fixes a problem where check_sections() cannot find
+ # a parameter like "addr[6 + 2]" because it actually appears
+ # as "addr[6", "+", "2]" on the parameter list;
+ # but it's better to maintain the param string unchanged for output,
+ # so just weaken the string compare in check_sections() to ignore
+ # "[blah" in a parameter string;
+ ###$param =~ s/\s*//g;
+ push @parameterlist, $param;
+ $parametertypes{$param} = $type;
+}
+
+sub check_sections($$$$$$) {
+ my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck, $nested) = @_;
+ my @sects = split ' ', $sectcheck;
+ my @prms = split ' ', $prmscheck;
+ my $err;
+ my ($px, $sx);
+ my $prm_clean; # strip trailing "[array size]" and/or beginning "*"
+
+ foreach $sx (0 .. $#sects) {
+ $err = 1;
+ foreach $px (0 .. $#prms) {
+ $prm_clean = $prms[$px];
+ $prm_clean =~ s/\[.*\]//;
+ $prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//;
+ # ignore array size in a parameter string;
+ # however, the original param string may contain
+ # spaces, e.g.: addr[6 + 2]
+ # and this appears in @prms as "addr[6" since the
+ # parameter list is split at spaces;
+ # hence just ignore "[..." for the sections check;
+ $prm_clean =~ s/\[.*//;
+
+ ##$prm_clean =~ s/^\**//;
+ if ($prm_clean eq $sects[$sx]) {
+ $err = 0;
+ last;
+ }
+ }
+ if ($err) {
+ if ($decl_type eq "function") {
+ print STDERR "Warning(${file}:$.): " .
+ "Excess function parameter " .
+ "'$sects[$sx]' " .
+ "description in '$decl_name'\n";
+ ++$warnings;
+ } else {
+ if ($nested !~ m/\Q$sects[$sx]\E/) {
+ print STDERR "Warning(${file}:$.): " .
+ "Excess struct/union/enum/typedef member " .
+ "'$sects[$sx]' " .
+ "description in '$decl_name'\n";
+ ++$warnings;
+ }
+ }
+ }
+ }
+}
+
+##
+# takes a function prototype and the name of the current file being
+# processed and spits out all the details stored in the global
+# arrays/hashes.
+sub dump_function($$) {
+ my $prototype = shift;
+ my $file = shift;
+
+ $prototype =~ s/^static +//;
+ $prototype =~ s/^extern +//;
+ $prototype =~ s/^asmlinkage +//;
+ $prototype =~ s/^inline +//;
+ $prototype =~ s/^__inline__ +//;
+ $prototype =~ s/^__inline +//;
+ $prototype =~ s/^__always_inline +//;
+ $prototype =~ s/^noinline +//;
+ $prototype =~ s/__devinit +//;
+ $prototype =~ s/__init +//;
+ $prototype =~ s/^#\s*define\s+//; #ak added
+ $prototype =~ s/__attribute__\s*\(\([a-z,]*\)\)//;
+
+ # Yes, this truly is vile. We are looking for:
+ # 1. Return type (may be nothing if we're looking at a macro)
+ # 2. Function name
+ # 3. Function parameters.
+ #
+ # All the while we have to watch out for function pointer parameters
+ # (which IIRC is what the two sections are for), C types (these
+ # regexps don't even start to express all the possibilities), and
+ # so on.
+ #
+ # If you mess with these regexps, it's a good idea to check that
+ # the following functions' documentation still comes out right:
+ # - parport_register_device (function pointer parameters)
+ # - atomic_set (macro)
+ # - pci_match_device, __copy_to_user (long return type)
+
+ if ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+ $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+ $prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+ $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+ $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+ $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+ $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+ $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+ $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+ $prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+ $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+ $prototype =~ m/^(\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+ $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+ $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+ $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+ $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+ $prototype =~ m/^(\w+\s+\w+\s*\*\s*\w+\s*\*\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/) {
+ $return_type = $1;
+ $declaration_name = $2;
+ my $args = $3;
+
+ create_parameterlist($args, ',', $file);
+ } else {
+ print STDERR "Error(${file}:$.): cannot understand prototype: '$prototype'\n";
+ ++$errors;
+ return;
+ }
+
+ my $prms = join " ", @parameterlist;
+ check_sections($file, $declaration_name, "function", $sectcheck, $prms, "");
+
+ output_declaration($declaration_name,
+ 'function',
+ {'function' => $declaration_name,
+ 'module' => $modulename,
+ 'functiontype' => $return_type,
+ 'parameterlist' => \@parameterlist,
+ 'parameterdescs' => \%parameterdescs,
+ 'parametertypes' => \%parametertypes,
+ 'sectionlist' => \@sectionlist,
+ 'sections' => \%sections,
+ 'purpose' => $declaration_purpose
+ });
+}
+
+sub process_file($);
+
+# Read the file that maps relative names to absolute names for
+# separate source and object directories and for shadow trees.
+if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
+ my ($relname, $absname);
+ while(<SOURCE_MAP>) {
+ chop();
+ ($relname, $absname) = (split())[0..1];
+ $relname =~ s:^/+::;
+ $source_map{$relname} = $absname;
+ }
+ close(SOURCE_MAP);
+}
+
+if ($filelist) {
+ open(FLIST,"<$filelist") or die "Can't open file list $filelist";
+ while(<FLIST>) {
+ chop;
+ process_file($_);
+ }
+}
+
+foreach (@ARGV) {
+ chomp;
+ process_file($_);
+}
+if ($verbose && $errors) {
+ print STDERR "$errors errors\n";
+}
+if ($verbose && $warnings) {
+ print STDERR "$warnings warnings\n";
+}
+
+exit($errors);
+
+sub reset_state {
+ $function = "";
+ %constants = ();
+ %parameterdescs = ();
+ %parametertypes = ();
+ @parameterlist = ();
+ %sections = ();
+ @sectionlist = ();
+ $sectcheck = "";
+ $struct_actual = "";
+ $prototype = "";
+
+ $state = 0;
+}
+
+sub tracepoint_munge($) {
+ my $file = shift;
+ my $tracepointname = 0;
+ my $tracepointargs = 0;
+
+ if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
+ $tracepointname = $1;
+ }
+ if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
+ $tracepointname = $1;
+ }
+ if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
+ $tracepointname = $2;
+ }
+ $tracepointname =~ s/^\s+//; #strip leading whitespace
+ if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
+ $tracepointargs = $1;
+ }
+ if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
+ print STDERR "Warning(${file}:$.): Unrecognized tracepoint format: \n".
+ "$prototype\n";
+ } else {
+ $prototype = "static inline void trace_$tracepointname($tracepointargs)";
+ }
+}
+
+sub syscall_munge() {
+ my $void = 0;
+
+ $prototype =~ s@[\r\n\t]+@ @gos; # strip newlines/CR's/tabs
+## if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
+ if ($prototype =~ m/SYSCALL_DEFINE0/) {
+ $void = 1;
+## $prototype = "long sys_$1(void)";
+ }
+
+ $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
+ if ($prototype =~ m/long (sys_.*?),/) {
+ $prototype =~ s/,/\(/;
+ } elsif ($void) {
+ $prototype =~ s/\)/\(void\)/;
+ }
+
+ # now delete all of the odd-number commas in $prototype
+ # so that arg types & arg names don't have a comma between them
+ my $count = 0;
+ my $len = length($prototype);
+ if ($void) {
+ $len = 0; # skip the for-loop
+ }
+ for (my $ix = 0; $ix < $len; $ix++) {
+ if (substr($prototype, $ix, 1) eq ',') {
+ $count++;
+ if ($count % 2 == 1) {
+ substr($prototype, $ix, 1) = ' ';
+ }
+ }
+ }
+}
+
+sub process_state3_function($$) {
+ my $x = shift;
+ my $file = shift;
+
+ $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
+
+ if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
+ # do nothing
+ }
+ elsif ($x =~ /([^\{]*)/) {
+ $prototype .= $1;
+ }
+
+ if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
+ $prototype =~ s@/\*.*?\*/@@gos; # strip comments.
+ $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
+ $prototype =~ s@^\s+@@gos; # strip leading spaces
+ if ($prototype =~ /SYSCALL_DEFINE/) {
+ syscall_munge();
+ }
+ if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
+ $prototype =~ /DEFINE_SINGLE_EVENT/)
+ {
+ tracepoint_munge($file);
+ }
+ dump_function($prototype, $file);
+ reset_state();
+ }
+}
+
+sub process_state3_type($$) {
+ my $x = shift;
+ my $file = shift;
+
+ $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
+ $x =~ s@^\s+@@gos; # strip leading spaces
+ $x =~ s@\s+$@@gos; # strip trailing spaces
+ $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
+
+ if ($x =~ /^#/) {
+ # To distinguish preprocessor directive from regular declaration later.
+ $x .= ";";
+ }
+
+ while (1) {
+ if ( $x =~ /([^{};]*)([{};])(.*)/ ) {
+ $prototype .= $1 . $2;
+ ($2 eq '{') && $brcount++;
+ ($2 eq '}') && $brcount--;
+ if (($2 eq ';') && ($brcount == 0)) {
+ dump_declaration($prototype, $file);
+ reset_state();
+ last;
+ }
+ $x = $3;
+ } else {
+ $prototype .= $x;
+ last;
+ }
+ }
+}
+
+# xml_escape: replace <, >, and & in the text stream;
+#
+# however, formatting controls that are generated internally/locally in the
+# kernel-doc script are not escaped here; instead, they begin life like
+# $blankline_html (4 of '\' followed by a mnemonic + ':'), then these strings
+# are converted to their mnemonic-expected output, without the 4 * '\' & ':',
+# just before actual output; (this is done by local_unescape())
+sub xml_escape($) {
+ my $text = shift;
+ if (($output_mode eq "text") || ($output_mode eq "man")) {
+ return $text;
+ }
+ $text =~ s/\&/\\\\\\amp;/g;
+ $text =~ s/\</\\\\\\lt;/g;
+ $text =~ s/\>/\\\\\\gt;/g;
+ return $text;
+}
+
+# convert local escape strings to html
+# local escape strings look like: '\\\\menmonic:' (that's 4 backslashes)
+sub local_unescape($) {
+ my $text = shift;
+ if (($output_mode eq "text") || ($output_mode eq "man")) {
+ return $text;
+ }
+ $text =~ s/\\\\\\\\lt:/</g;
+ $text =~ s/\\\\\\\\gt:/>/g;
+ return $text;
+}
+
+sub process_file($) {
+ my $file;
+ my $identifier;
+ my $func;
+ my $descr;
+ my $in_purpose = 0;
+ my $initial_section_counter = $section_counter;
+
+ if (defined($ENV{'SRCTREE'})) {
+ $file = "$ENV{'SRCTREE'}" . "/" . "@_";
+ }
+ else {
+ $file = "@_";
+ }
+ if (defined($source_map{$file})) {
+ $file = $source_map{$file};
+ }
+
+ if (!open(IN,"<$file")) {
+ print STDERR "Error: Cannot open file $file\n";
+ ++$errors;
+ return;
+ }
+
+ $section_counter = 0;
+ while (<IN>) {
+ if ($state == 0) {
+ if (/$doc_start/o) {
+ $state = 1; # next line is always the function name
+ $in_doc_sect = 0;
+ }
+ } elsif ($state == 1) { # this line is the function name (always)
+ if (/$doc_block/o) {
+ $state = 4;
+ $contents = "";
+ if ( $1 eq "" ) {
+ $section = $section_intro;
+ } else {
+ $section = $1;
+ }
+ }
+ elsif (/$doc_decl/o) {
+ $identifier = $1;
+ if (/\s*([\w\s]+?)\s*-/) {
+ $identifier = $1;
+ }
+
+ $state = 2;
+ if (/-(.*)/) {
+ # strip leading/trailing/multiple spaces
+ $descr= $1;
+ $descr =~ s/^\s*//;
+ $descr =~ s/\s*$//;
+ $descr =~ s/\s+/ /;
+ $declaration_purpose = xml_escape($descr);
+ $in_purpose = 1;
+ } else {
+ $declaration_purpose = "";
+ }
+
+ if (($declaration_purpose eq "") && $verbose) {
+ print STDERR "Warning(${file}:$.): missing initial short description on line:\n";
+ print STDERR $_;
+ ++$warnings;
+ }
+
+ if ($identifier =~ m/^struct/) {
+ $decl_type = 'struct';
+ } elsif ($identifier =~ m/^union/) {
+ $decl_type = 'union';
+ } elsif ($identifier =~ m/^enum/) {
+ $decl_type = 'enum';
+ } elsif ($identifier =~ m/^typedef/) {
+ $decl_type = 'typedef';
+ } else {
+ $decl_type = 'function';
+ }
+
+ if ($verbose) {
+ print STDERR "Info(${file}:$.): Scanning doc for $identifier\n";
+ }
+ } else {
+ print STDERR "Warning(${file}:$.): Cannot understand $_ on line $.",
+ " - I thought it was a doc line\n";
+ ++$warnings;
+ $state = 0;
+ }
+ } elsif ($state == 2) { # look for head: lines, and include content
+ if (/$doc_sect/o) {
+ $newsection = $1;
+ $newcontents = $2;
+
+ if (($contents ne "") && ($contents ne "\n")) {
+ if (!$in_doc_sect && $verbose) {
+ print STDERR "Warning(${file}:$.): contents before sections\n";
+ ++$warnings;
+ }
+ dump_section($file, $section, xml_escape($contents));
+ $section = $section_default;
+ }
+
+ $in_doc_sect = 1;
+ $in_purpose = 0;
+ $contents = $newcontents;
+ if ($contents ne "") {
+ while ((substr($contents, 0, 1) eq " ") ||
+ substr($contents, 0, 1) eq "\t") {
+ $contents = substr($contents, 1);
+ }
+ $contents .= "\n";
+ }
+ $section = $newsection;
+ } elsif (/$doc_end/) {
+
+ if ($contents ne "") {
+ dump_section($file, $section, xml_escape($contents));
+ $section = $section_default;
+ $contents = "";
+ }
+ # look for doc_com + <text> + doc_end:
+ if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
+ print STDERR "Warning(${file}:$.): suspicious ending line: $_";
+ ++$warnings;
+ }
+
+ $prototype = "";
+ $state = 3;
+ $brcount = 0;
+# print STDERR "end of doc comment, looking for prototype\n";
+ } elsif (/$doc_content/) {
+ # miguel-style comment kludge, look for blank lines after
+ # @parameter line to signify start of description
+ if ($1 eq "") {
+ if ($section =~ m/^@/ || $section eq $section_context) {
+ dump_section($file, $section, xml_escape($contents));
+ $section = $section_default;
+ $contents = "";
+ } else {
+ $contents .= "\n";
+ }
+ $in_purpose = 0;
+ } elsif ($in_purpose == 1) {
+ # Continued declaration purpose
+ chomp($declaration_purpose);
+ $declaration_purpose .= " " . xml_escape($1);
+ } else {
+ $contents .= $1 . "\n";
+ }
+ } else {
+ # i dont know - bad line? ignore.
+ print STDERR "Warning(${file}:$.): bad line: $_";
+ ++$warnings;
+ }
+ } elsif ($state == 3) { # scanning for function '{' (end of prototype)
+ if ($decl_type eq 'function') {
+ process_state3_function($_, $file);
+ } else {
+ process_state3_type($_, $file);
+ }
+ } elsif ($state == 4) {
+ # Documentation block
+ if (/$doc_block/) {
+ dump_doc_section($file, $section, xml_escape($contents));
+ $contents = "";
+ $function = "";
+ %constants = ();
+ %parameterdescs = ();
+ %parametertypes = ();
+ @parameterlist = ();
+ %sections = ();
+ @sectionlist = ();
+ $prototype = "";
+ if ( $1 eq "" ) {
+ $section = $section_intro;
+ } else {
+ $section = $1;
+ }
+ }
+ elsif (/$doc_end/)
+ {
+ dump_doc_section($file, $section, xml_escape($contents));
+ $contents = "";
+ $function = "";
+ %constants = ();
+ %parameterdescs = ();
+ %parametertypes = ();
+ @parameterlist = ();
+ %sections = ();
+ @sectionlist = ();
+ $prototype = "";
+ $state = 0;
+ }
+ elsif (/$doc_content/)
+ {
+ if ( $1 eq "" )
+ {
+ $contents .= $blankline;
+ }
+ else
+ {
+ $contents .= $1 . "\n";
+ }
+ }
+ }
+ }
+ if ($initial_section_counter == $section_counter) {
+ print STDERR "Warning(${file}): no structured comments found\n";
+ if ($output_mode eq "xml") {
+ # The template wants at least one RefEntry here; make one.
+ print "<refentry>\n";
+ print " <refnamediv>\n";
+ print " <refname>\n";
+ print " ${file}\n";
+ print " </refname>\n";
+ print " <refpurpose>\n";
+ print " Document generation inconsistency\n";
+ print " </refpurpose>\n";
+ print " </refnamediv>\n";
+ print " <refsect1>\n";
+ print " <title>\n";
+ print " Oops\n";
+ print " </title>\n";
+ print " <warning>\n";
+ print " <para>\n";
+ print " The template for this document tried to insert\n";
+ print " the structured comment from the file\n";
+ print " <filename>${file}</filename> at this point,\n";
+ print " but none was found.\n";
+ print " This dummy section is inserted to allow\n";
+ print " generation to continue.\n";
+ print " </para>\n";
+ print " </warning>\n";
+ print " </refsect1>\n";
+ print "</refentry>\n";
+ }
+ }
+}
--- /dev/null
+bin_PROGRAMS=libwebsockets-test-server libwebsockets-test-client libwebsockets-test-server-extpoll libwebsockets-test-fraggle
+libwebsockets_test_server_SOURCES=test-server.c
+libwebsockets_test_server_LDADD=-L../lib -lwebsockets -lz
+libwebsockets_test_client_SOURCES=test-client.c
+libwebsockets_test_client_LDADD=-L../lib -lwebsockets -lz
+libwebsockets_test_server_extpoll_SOURCES=test-server-extpoll.c
+libwebsockets_test_server_extpoll_LDADD=-L../lib -lwebsockets -lz
+libwebsockets_test_fraggle_SOURCES=test-fraggle.c
+libwebsockets_test_fraggle_LDADD=-L../lib -lwebsockets -lz
+
+if MINGW
+libwebsockets_test_server_CFLAGS:= -w -I../win32port/win32helpers
+libwebsockets_test_client_CFLAGS:= -w -I../win32port/win32helpers
+libwebsockets_test_server_extpoll_CFLAGS:= -w -I../win32port/win32helpers
+libwebsockets_test_fraggle_CFLAGS:= -w -I../win32port/win32helpers
+
+libwebsockets_test_server_LDADD+= -lm -luser32 -ladvapi32 -lkernel32 -lgcc -lws2_32 -lz
+libwebsockets_test_client_LDADD+= -lm -luser32 -ladvapi32 -lkernel32 -lgcc -lws2_32 -lz
+libwebsockets_test_server_extpoll_LDADD+= -lm -luser32 -ladvapi32 -lkernel32 -lgcc -lws2_32 -lz
+libwebsockets_test_fraggle_LDADD+= -lm -luser32 -ladvapi32 -lkernel32 -lgcc -lws2_32 -lz
+
+else
+libwebsockets_test_server_CFLAGS:= -Werror
+libwebsockets_test_client_CFLAGS:= -Werror
+libwebsockets_test_server_extpoll_CFLAGS:= -Werror
+libwebsockets_test_fraggle_CFLAGS:= -Werror
+endif
+
+libwebsockets_test_server_CFLAGS+= -Wall -std=gnu99 -pedantic -DINSTALL_DATADIR=\"@datadir@\" -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
+libwebsockets_test_client_CFLAGS+= -Wall -std=gnu99 -pedantic -DINSTALL_DATADIR=\"@datadir@\" -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
+libwebsockets_test_server_extpoll_CFLAGS+= -Wall -std=gnu99 -pedantic -DINSTALL_DATADIR=\"@datadir@\" -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
+libwebsockets_test_fraggle_CFLAGS+= -Wall -std=gnu99 -pedantic -DINSTALL_DATADIR=\"@datadir@\" -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
+
+
+if NOPING
+else
+bin_PROGRAMS+=libwebsockets-test-ping
+libwebsockets_test_ping_SOURCES=test-ping.c
+libwebsockets_test_ping_LDADD=-L../lib -lwebsockets
+libwebsockets_test_ping_CFLAGS:= -Wall -Werror -std=gnu99 -pedantic -DINSTALL_DATADIR=\"@datadir@\" -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
+endif
+
+
+#
+# cook a random test cert and key
+# notice your real cert and key will want to be 0600 permissions
+libwebsockets-test-server.pem libwebsockets-test-server.key.pem:
+ printf "GB\nErewhon\nAll around\nlibwebsockets-test\n\nlocalhost\nnone@invalid.org\n" | \
+ openssl req -new -newkey rsa:1024 -days 10000 -nodes -x509 -keyout \
+ ./libwebsockets-test-server.key.pem -out ./libwebsockets-test-server.pem >/dev/null 2>&1 && \
+ chmod 644 ./libwebsockets-test-server.key.pem \
+ ./libwebsockets-test-server.pem
+
+clean-local:
+ rm -f ./libwebsockets-test-server.key.pem ./libwebsockets-test-server.pem
+
+install-data-local:libwebsockets-test-server.key.pem libwebsockets-test-server.pem
+ mkdir -p $(DESTDIR)$(datadir)/libwebsockets-test-server
+ cp -a test.html favicon.ico libwebsockets-test-server.key.pem libwebsockets-test-server.pem \
+ $(DESTDIR)$(datadir)/libwebsockets-test-server
+
--- /dev/null
+# Makefile.in generated by automake 1.11.3 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+# Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkglibexecdir = $(libexecdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+bin_PROGRAMS = libwebsockets-test-server$(EXEEXT) \
+ libwebsockets-test-client$(EXEEXT) \
+ libwebsockets-test-server-extpoll$(EXEEXT) \
+ libwebsockets-test-fraggle$(EXEEXT) $(am__EXEEXT_1)
+@MINGW_TRUE@am__append_1 = -lm -luser32 -ladvapi32 -lkernel32 -lgcc -lws2_32 -lz
+@MINGW_TRUE@am__append_2 = -lm -luser32 -ladvapi32 -lkernel32 -lgcc -lws2_32 -lz
+@MINGW_TRUE@am__append_3 = -lm -luser32 -ladvapi32 -lkernel32 -lgcc -lws2_32 -lz
+@MINGW_TRUE@am__append_4 = -lm -luser32 -ladvapi32 -lkernel32 -lgcc -lws2_32 -lz
+@NOPING_FALSE@am__append_5 = libwebsockets-test-ping
+subdir = test-server
+DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/configure.ac
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+ $(ACLOCAL_M4)
+mkinstalldirs = $(install_sh) -d
+CONFIG_HEADER = $(top_builddir)/config.h
+CONFIG_CLEAN_FILES =
+CONFIG_CLEAN_VPATH_FILES =
+@NOPING_FALSE@am__EXEEXT_1 = libwebsockets-test-ping$(EXEEXT)
+am__installdirs = "$(DESTDIR)$(bindir)"
+PROGRAMS = $(bin_PROGRAMS)
+am_libwebsockets_test_client_OBJECTS = \
+ libwebsockets_test_client-test-client.$(OBJEXT)
+libwebsockets_test_client_OBJECTS = \
+ $(am_libwebsockets_test_client_OBJECTS)
+am__DEPENDENCIES_1 =
+libwebsockets_test_client_DEPENDENCIES = $(am__DEPENDENCIES_1)
+libwebsockets_test_client_LINK = $(LIBTOOL) --tag=CC \
+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \
+ $(libwebsockets_test_client_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+ $(LDFLAGS) -o $@
+am_libwebsockets_test_fraggle_OBJECTS = \
+ libwebsockets_test_fraggle-test-fraggle.$(OBJEXT)
+libwebsockets_test_fraggle_OBJECTS = \
+ $(am_libwebsockets_test_fraggle_OBJECTS)
+libwebsockets_test_fraggle_DEPENDENCIES = $(am__DEPENDENCIES_1)
+libwebsockets_test_fraggle_LINK = $(LIBTOOL) --tag=CC \
+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \
+ $(libwebsockets_test_fraggle_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+ $(LDFLAGS) -o $@
+am__libwebsockets_test_ping_SOURCES_DIST = test-ping.c
+@NOPING_FALSE@am_libwebsockets_test_ping_OBJECTS = \
+@NOPING_FALSE@ libwebsockets_test_ping-test-ping.$(OBJEXT)
+libwebsockets_test_ping_OBJECTS = \
+ $(am_libwebsockets_test_ping_OBJECTS)
+libwebsockets_test_ping_DEPENDENCIES =
+libwebsockets_test_ping_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
+ $(LIBTOOLFLAGS) --mode=link $(CCLD) \
+ $(libwebsockets_test_ping_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+ $(LDFLAGS) -o $@
+am_libwebsockets_test_server_OBJECTS = \
+ libwebsockets_test_server-test-server.$(OBJEXT)
+libwebsockets_test_server_OBJECTS = \
+ $(am_libwebsockets_test_server_OBJECTS)
+libwebsockets_test_server_DEPENDENCIES = $(am__DEPENDENCIES_1)
+libwebsockets_test_server_LINK = $(LIBTOOL) --tag=CC \
+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \
+ $(libwebsockets_test_server_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+ $(LDFLAGS) -o $@
+am_libwebsockets_test_server_extpoll_OBJECTS = libwebsockets_test_server_extpoll-test-server-extpoll.$(OBJEXT)
+libwebsockets_test_server_extpoll_OBJECTS = \
+ $(am_libwebsockets_test_server_extpoll_OBJECTS)
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+ $(am__DEPENDENCIES_1)
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+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \
+ $(libwebsockets_test_server_extpoll_CFLAGS) $(CFLAGS) \
+ $(AM_LDFLAGS) $(LDFLAGS) -o $@
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+am__depfiles_maybe = depfiles
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+LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
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+ $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
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+ --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+ $(LDFLAGS) -o $@
+SOURCES = $(libwebsockets_test_client_SOURCES) \
+ $(libwebsockets_test_fraggle_SOURCES) \
+ $(libwebsockets_test_ping_SOURCES) \
+ $(libwebsockets_test_server_SOURCES) \
+ $(libwebsockets_test_server_extpoll_SOURCES)
+DIST_SOURCES = $(libwebsockets_test_client_SOURCES) \
+ $(libwebsockets_test_fraggle_SOURCES) \
+ $(am__libwebsockets_test_ping_SOURCES_DIST) \
+ $(libwebsockets_test_server_SOURCES) \
+ $(libwebsockets_test_server_extpoll_SOURCES)
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+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
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+PATH_SEPARATOR = @PATH_SEPARATOR@
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+SED = @SED@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+STRIP = @STRIP@
+VERSION = @VERSION@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
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+am__leading_dot = @am__leading_dot@
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+build_vendor = @build_vendor@
+builddir = @builddir@
+clientcertdir = @clientcertdir@
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+exec_prefix = @exec_prefix@
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+pdfdir = @pdfdir@
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+program_transform_name = @program_transform_name@
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+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+libwebsockets_test_server_SOURCES = test-server.c
+libwebsockets_test_server_LDADD = -L../lib -lwebsockets -lz \
+ $(am__append_1)
+libwebsockets_test_client_SOURCES = test-client.c
+libwebsockets_test_client_LDADD = -L../lib -lwebsockets -lz \
+ $(am__append_2)
+libwebsockets_test_server_extpoll_SOURCES = test-server-extpoll.c
+libwebsockets_test_server_extpoll_LDADD = -L../lib -lwebsockets -lz \
+ $(am__append_3)
+libwebsockets_test_fraggle_SOURCES = test-fraggle.c
+libwebsockets_test_fraggle_LDADD = -L../lib -lwebsockets -lz \
+ $(am__append_4)
+@MINGW_FALSE@libwebsockets_test_server_CFLAGS := -Werror -Wall \
+@MINGW_FALSE@ -std=gnu99 -pedantic \
+@MINGW_FALSE@ -DINSTALL_DATADIR=\"@datadir@\" \
+@MINGW_FALSE@ -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
+@MINGW_TRUE@libwebsockets_test_server_CFLAGS := -w \
+@MINGW_TRUE@ -I../win32port/win32helpers -Wall -std=gnu99 \
+@MINGW_TRUE@ -pedantic -DINSTALL_DATADIR=\"@datadir@\" \
+@MINGW_TRUE@ -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
+@MINGW_FALSE@libwebsockets_test_client_CFLAGS := -Werror -Wall \
+@MINGW_FALSE@ -std=gnu99 -pedantic \
+@MINGW_FALSE@ -DINSTALL_DATADIR=\"@datadir@\" \
+@MINGW_FALSE@ -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
+@MINGW_TRUE@libwebsockets_test_client_CFLAGS := -w \
+@MINGW_TRUE@ -I../win32port/win32helpers -Wall -std=gnu99 \
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+ -rm -rf .libs _libs
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+ list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+ unique=`for i in $$list; do \
+ if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+ done | \
+ $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+ END { if (nonempty) { for (i in files) print i; }; }'`; \
+ mkid -fID $$unique
+tags: TAGS
+
+TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \
+ $(TAGS_FILES) $(LISP)
+ set x; \
+ here=`pwd`; \
+ list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+ unique=`for i in $$list; do \
+ if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+ done | \
+ $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+ END { if (nonempty) { for (i in files) print i; }; }'`; \
+ shift; \
+ if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+ test -n "$$unique" || unique=$$empty_fix; \
+ if test $$# -gt 0; then \
+ $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+ "$$@" $$unique; \
+ else \
+ $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+ $$unique; \
+ fi; \
+ fi
+ctags: CTAGS
+CTAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \
+ $(TAGS_FILES) $(LISP)
+ list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+ unique=`for i in $$list; do \
+ if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+ done | \
+ $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+ END { if (nonempty) { for (i in files) print i; }; }'`; \
+ test -z "$(CTAGS_ARGS)$$unique" \
+ || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+ $$unique
+
+GTAGS:
+ here=`$(am__cd) $(top_builddir) && pwd` \
+ && $(am__cd) $(top_srcdir) \
+ && gtags -i $(GTAGS_ARGS) "$$here"
+
+distclean-tags:
+ -rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+ @srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+ topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+ list='$(DISTFILES)'; \
+ dist_files=`for file in $$list; do echo $$file; done | \
+ sed -e "s|^$$srcdirstrip/||;t" \
+ -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+ case $$dist_files in \
+ */*) $(MKDIR_P) `echo "$$dist_files" | \
+ sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+ sort -u` ;; \
+ esac; \
+ for file in $$dist_files; do \
+ if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+ if test -d $$d/$$file; then \
+ dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+ if test -d "$(distdir)/$$file"; then \
+ find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+ fi; \
+ if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+ cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+ find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+ fi; \
+ cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+ else \
+ test -f "$(distdir)/$$file" \
+ || cp -p $$d/$$file "$(distdir)/$$file" \
+ || exit 1; \
+ fi; \
+ done
+check-am: all-am
+check: check-am
+all-am: Makefile $(PROGRAMS)
+installdirs:
+ for dir in "$(DESTDIR)$(bindir)"; do \
+ test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+ done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+ @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+ if test -z '$(STRIP)'; then \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ install; \
+ else \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+ fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+ -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+ -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+ @echo "This command is intended for maintainers to use"
+ @echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-binPROGRAMS clean-generic clean-libtool clean-local \
+ mostlyclean-am
+
+distclean: distclean-am
+ -rm -rf ./$(DEPDIR)
+ -rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+ distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-data-local
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am: install-binPROGRAMS
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+ -rm -rf ./$(DEPDIR)
+ -rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+ mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-binPROGRAMS
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-binPROGRAMS \
+ clean-generic clean-libtool clean-local ctags distclean \
+ distclean-compile distclean-generic distclean-libtool \
+ distclean-tags distdir dvi dvi-am html html-am info info-am \
+ install install-am install-binPROGRAMS install-data \
+ install-data-am install-data-local install-dvi install-dvi-am \
+ install-exec install-exec-am install-html install-html-am \
+ install-info install-info-am install-man install-pdf \
+ install-pdf-am install-ps install-ps-am install-strip \
+ installcheck installcheck-am installdirs maintainer-clean \
+ maintainer-clean-generic mostlyclean mostlyclean-compile \
+ mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+ tags uninstall uninstall-am uninstall-binPROGRAMS
+
+
+#
+# cook a random test cert and key
+# notice your real cert and key will want to be 0600 permissions
+libwebsockets-test-server.pem libwebsockets-test-server.key.pem:
+ printf "GB\nErewhon\nAll around\nlibwebsockets-test\n\nlocalhost\nnone@invalid.org\n" | \
+ openssl req -new -newkey rsa:1024 -days 10000 -nodes -x509 -keyout \
+ ./libwebsockets-test-server.key.pem -out ./libwebsockets-test-server.pem >/dev/null 2>&1 && \
+ chmod 644 ./libwebsockets-test-server.key.pem \
+ ./libwebsockets-test-server.pem
+
+clean-local:
+ rm -f ./libwebsockets-test-server.key.pem ./libwebsockets-test-server.pem
+
+install-data-local:libwebsockets-test-server.key.pem libwebsockets-test-server.pem
+ mkdir -p $(DESTDIR)$(datadir)/libwebsockets-test-server
+ cp -a test.html favicon.ico libwebsockets-test-server.key.pem libwebsockets-test-server.pem \
+ $(DESTDIR)$(datadir)/libwebsockets-test-server
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+/*
+ * libwebsockets-test-client - libwebsockets test implementation
+ *
+ * Copyright (C) 2011 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <string.h>
+
+#include "../lib/libwebsockets.h"
+
+static unsigned int opts;
+static int was_closed;
+static int deny_deflate;
+static int deny_mux;
+static struct libwebsocket *wsi_mirror;
+
+/*
+ * This demo shows how to connect multiple websockets simultaneously to a
+ * websocket server (there is no restriction on their having to be the same
+ * server just it simplifies the demo).
+ *
+ * dumb-increment-protocol: we connect to the server and print the number
+ * we are given
+ *
+ * lws-mirror-protocol: draws random circles, which are mirrored on to every
+ * client (see them being drawn in every browser
+ * session also using the test server)
+ */
+
+enum demo_protocols {
+
+ PROTOCOL_DUMB_INCREMENT,
+ PROTOCOL_LWS_MIRROR,
+
+ /* always last */
+ DEMO_PROTOCOL_COUNT
+};
+
+
+/* dumb_increment protocol */
+
+static int
+callback_dumb_increment(struct libwebsocket_context *this,
+ struct libwebsocket *wsi,
+ enum libwebsocket_callback_reasons reason,
+ void *user, void *in, size_t len)
+{
+ switch (reason) {
+
+ case LWS_CALLBACK_CLOSED:
+ fprintf(stderr, "LWS_CALLBACK_CLOSED\n");
+ was_closed = 1;
+ break;
+
+ case LWS_CALLBACK_CLIENT_RECEIVE:
+ ((char *)in)[len] = '\0';
+ fprintf(stderr, "rx %d '%s'\n", (int)len, (char *)in);
+ break;
+
+ /* because we are protocols[0] ... */
+
+ case LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED:
+ if ((strcmp(in, "deflate-stream") == 0) && deny_deflate) {
+ fprintf(stderr, "denied deflate-stream extension\n");
+ return 1;
+ }
+ if ((strcmp(in, "x-google-mux") == 0) && deny_mux) {
+ fprintf(stderr, "denied x-google-mux extension\n");
+ return 1;
+ }
+
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+
+/* lws-mirror_protocol */
+
+
+static int
+callback_lws_mirror(struct libwebsocket_context *this,
+ struct libwebsocket *wsi,
+ enum libwebsocket_callback_reasons reason,
+ void *user, void *in, size_t len)
+{
+ unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 4096 +
+ LWS_SEND_BUFFER_POST_PADDING];
+ int l;
+
+ switch (reason) {
+
+ case LWS_CALLBACK_CLOSED:
+ fprintf(stderr, "mirror: LWS_CALLBACK_CLOSED\n");
+ wsi_mirror = NULL;
+ break;
+
+ case LWS_CALLBACK_CLIENT_ESTABLISHED:
+
+ /*
+ * start the ball rolling,
+ * LWS_CALLBACK_CLIENT_WRITEABLE will come next service
+ */
+
+ libwebsocket_callback_on_writable(this, wsi);
+ break;
+
+ case LWS_CALLBACK_CLIENT_RECEIVE:
+/* fprintf(stderr, "rx %d '%s'\n", (int)len, (char *)in); */
+ break;
+
+ case LWS_CALLBACK_CLIENT_WRITEABLE:
+
+ l = sprintf((char *)&buf[LWS_SEND_BUFFER_PRE_PADDING],
+ "c #%06X %d %d %d;",
+ (int)random() & 0xffffff,
+ (int)random() % 500,
+ (int)random() % 250,
+ (int)random() % 24);
+
+ libwebsocket_write(wsi,
+ &buf[LWS_SEND_BUFFER_PRE_PADDING], l, opts | LWS_WRITE_TEXT);
+
+ /* get notified as soon as we can write again */
+
+ libwebsocket_callback_on_writable(this, wsi);
+
+ /*
+ * without at least this delay, we choke the browser
+ * and the connection stalls, despite we now take care about
+ * flow control
+ */
+
+ usleep(200);
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+
+/* list of supported protocols and callbacks */
+
+static struct libwebsocket_protocols protocols[] = {
+ {
+ "dumb-increment-protocol",
+ callback_dumb_increment,
+ 0,
+ },
+ {
+ "lws-mirror-protocol",
+ callback_lws_mirror,
+ 0,
+ },
+ { /* end of list */
+ NULL,
+ NULL,
+ 0
+ }
+};
+
+static struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "port", required_argument, NULL, 'p' },
+ { "ssl", no_argument, NULL, 's' },
+ { "killmask", no_argument, NULL, 'k' },
+ { "version", required_argument, NULL, 'v' },
+ { "undeflated", no_argument, NULL, 'u' },
+ { "nomux", no_argument, NULL, 'n' },
+ { NULL, 0, 0, 0 }
+};
+
+
+int main(int argc, char **argv)
+{
+ int n = 0;
+ int port = 7681;
+ int use_ssl = 0;
+ struct libwebsocket_context *context;
+ const char *address;
+ struct libwebsocket *wsi_dumb;
+ int ietf_version = -1; /* latest */
+ int mirror_lifetime = 0;
+
+ fprintf(stderr, "libwebsockets test client\n"
+ "(C) Copyright 2010 Andy Green <andy@warmcat.com> "
+ "licensed under LGPL2.1\n");
+
+ if (argc < 2)
+ goto usage;
+
+ while (n >= 0) {
+ n = getopt_long(argc, argv, "nuv:khsp:", options, NULL);
+ if (n < 0)
+ continue;
+ switch (n) {
+ case 's':
+ use_ssl = 2; /* 2 = allow selfsigned */
+ break;
+ case 'p':
+ port = atoi(optarg);
+ break;
+ case 'k':
+ opts = LWS_WRITE_CLIENT_IGNORE_XOR_MASK;
+ break;
+ case 'v':
+ ietf_version = atoi(optarg);
+ break;
+ case 'u':
+ deny_deflate = 1;
+ break;
+ case 'n':
+ deny_mux = 1;
+ break;
+ case 'h':
+ goto usage;
+ }
+ }
+
+ if (optind >= argc)
+ goto usage;
+
+ address = argv[optind];
+
+ /*
+ * create the websockets context. This tracks open connections and
+ * knows how to route any traffic and which protocol version to use,
+ * and if each connection is client or server side.
+ *
+ * For this client-only demo, we tell it to not listen on any port.
+ */
+
+ context = libwebsocket_create_context(CONTEXT_PORT_NO_LISTEN, NULL,
+ protocols, libwebsocket_internal_extensions,
+ NULL, NULL, -1, -1, 0);
+ if (context == NULL) {
+ fprintf(stderr, "Creating libwebsocket context failed\n");
+ return 1;
+ }
+
+
+ /* create a client websocket using dumb increment protocol */
+
+ wsi_dumb = libwebsocket_client_connect(context, address, port, use_ssl,
+ "/", argv[optind], argv[optind],
+ protocols[PROTOCOL_DUMB_INCREMENT].name, ietf_version);
+
+ if (wsi_dumb == NULL) {
+ fprintf(stderr, "libwebsocket dumb connect failed\n");
+ return -1;
+ }
+
+ fprintf(stderr, "Websocket connections opened\n");
+
+ /*
+ * sit there servicing the websocket context to handle incoming
+ * packets, and drawing random circles on the mirror protocol websocket
+ */
+
+ n = 0;
+ while (n >= 0 && !was_closed) {
+ n = libwebsocket_service(context, 1000);
+
+ if (n < 0)
+ continue;
+
+ if (wsi_mirror == NULL) {
+
+ /* create a client websocket using mirror protocol */
+
+ wsi_mirror = libwebsocket_client_connect(context,
+ address, port, use_ssl, "/",
+ argv[optind], argv[optind],
+ protocols[PROTOCOL_LWS_MIRROR].name,
+ ietf_version);
+
+ if (wsi_mirror == NULL) {
+ fprintf(stderr, "libwebsocket "
+ "dumb connect failed\n");
+ return -1;
+ }
+
+ mirror_lifetime = 10 + (random() & 1023);
+
+ fprintf(stderr, "opened mirror connection with "
+ "%d lifetime\n", mirror_lifetime);
+
+ } else {
+
+ mirror_lifetime--;
+ if (mirror_lifetime == 0) {
+ fprintf(stderr, "closing mirror session\n");
+ libwebsocket_close_and_free_session(context,
+ wsi_mirror, LWS_CLOSE_STATUS_GOINGAWAY);
+
+ /*
+ * wsi_mirror will get set to NULL in
+ * callback when close completes
+ */
+ }
+ }
+ }
+
+ fprintf(stderr, "Exiting\n");
+
+ libwebsocket_context_destroy(context);
+
+ return 0;
+
+usage:
+ fprintf(stderr, "Usage: libwebsockets-test-client "
+ "<server address> [--port=<p>] "
+ "[--ssl] [-k] [-v <ver>]\n");
+ return 1;
+}
--- /dev/null
+/*
+ * libwebsockets-test-fraggle - random fragmentation test
+ *
+ * Copyright (C) 2010-2011 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <string.h>
+#include <sys/time.h>
+
+#include "../lib/libwebsockets.h"
+
+#define LOCAL_RESOURCE_PATH INSTALL_DATADIR"/libwebsockets-test-server"
+
+static int client;
+static int terminate;
+
+enum demo_protocols {
+ PROTOCOL_FRAGGLE,
+
+ /* always last */
+ DEMO_PROTOCOL_COUNT
+};
+
+/* fraggle protocol */
+
+enum fraggle_states {
+ FRAGSTATE_START_MESSAGE,
+ FRAGSTATE_RANDOM_PAYLOAD,
+ FRAGSTATE_POST_PAYLOAD_SUM,
+};
+
+struct per_session_data__fraggle {
+ int packets_left;
+ int total_message;
+ unsigned long sum;
+ enum fraggle_states state;
+};
+
+static int
+callback_fraggle(struct libwebsocket_context *context,
+ struct libwebsocket *wsi,
+ enum libwebsocket_callback_reasons reason,
+ void *user, void *in, size_t len)
+{
+ int n;
+ unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 2048 +
+ LWS_SEND_BUFFER_POST_PADDING];
+ struct per_session_data__fraggle *psf = user;
+ int chunk;
+ int write_mode = LWS_WRITE_CONTINUATION;
+ unsigned long sum;
+ unsigned char *p = (unsigned char *)in;
+ unsigned char *bp = &buf[LWS_SEND_BUFFER_PRE_PADDING];
+
+ switch (reason) {
+
+ case LWS_CALLBACK_ESTABLISHED:
+
+ fprintf(stderr, "server sees client connect\n");
+ psf->state = FRAGSTATE_START_MESSAGE;
+ /* start the ball rolling */
+ libwebsocket_callback_on_writable(context, wsi);
+ break;
+
+ case LWS_CALLBACK_CLIENT_ESTABLISHED:
+
+ fprintf(stderr, "client connects to server\n");
+ psf->state = FRAGSTATE_START_MESSAGE;
+ break;
+
+ case LWS_CALLBACK_CLIENT_RECEIVE:
+
+ switch (psf->state) {
+
+ case FRAGSTATE_START_MESSAGE:
+
+ psf->state = FRAGSTATE_RANDOM_PAYLOAD;
+ psf->sum = 0;
+ psf->total_message = 0;
+ psf->packets_left = 0;
+
+ /* fallthru */
+
+ case FRAGSTATE_RANDOM_PAYLOAD:
+
+ for (n = 0; n < len; n++)
+ psf->sum += p[n];
+
+ psf->total_message += len;
+ psf->packets_left++;
+
+ if (libwebsocket_is_final_fragment(wsi))
+ psf->state = FRAGSTATE_POST_PAYLOAD_SUM;
+ break;
+
+ case FRAGSTATE_POST_PAYLOAD_SUM:
+
+ sum = p[0] << 24;
+ sum |= p[1] << 16;
+ sum |= p[2] << 8;
+ sum |= p[3];
+ if (sum == psf->sum)
+ fprintf(stderr, "EOM received %d correctly "
+ "from %d fragments\n",
+ psf->total_message, psf->packets_left);
+ else
+ fprintf(stderr, "**** ERROR at EOM: "
+ "length %d, rx sum = 0x%lX, "
+ "server says it sent 0x%lX\n",
+ psf->total_message, psf->sum, sum);
+
+ psf->state = FRAGSTATE_START_MESSAGE;
+ break;
+ }
+ break;
+
+ case LWS_CALLBACK_SERVER_WRITEABLE:
+
+ switch (psf->state) {
+
+ case FRAGSTATE_START_MESSAGE:
+
+ psf->packets_left = (random() % 1024) + 1;
+ fprintf(stderr, "Spamming %d random fragments\n",
+ psf->packets_left);
+ psf->sum = 0;
+ psf->total_message = 0;
+ write_mode = LWS_WRITE_BINARY;
+ psf->state = FRAGSTATE_RANDOM_PAYLOAD;
+
+ /* fallthru */
+
+ case FRAGSTATE_RANDOM_PAYLOAD:
+
+ chunk = (random() % 2000) + 1;
+ psf->total_message += chunk;
+
+ libwebsockets_get_random(context, bp, chunk);
+ for (n = 0; n < chunk; n++)
+ psf->sum += bp[n];
+
+ psf->packets_left--;
+ if (psf->packets_left)
+ write_mode |= LWS_WRITE_NO_FIN;
+ else
+ psf->state = FRAGSTATE_POST_PAYLOAD_SUM;
+
+ n = libwebsocket_write(wsi, bp, chunk, write_mode);
+
+ libwebsocket_callback_on_writable(context, wsi);
+ break;
+
+ case FRAGSTATE_POST_PAYLOAD_SUM:
+
+ fprintf(stderr, "Spamming session over, "
+ "len = %d. sum = 0x%lX\n",
+ psf->total_message, psf->sum);
+
+ bp[0] = psf->sum >> 24;
+ bp[1] = psf->sum >> 16;
+ bp[2] = psf->sum >> 8;
+ bp[3] = psf->sum;
+
+ n = libwebsocket_write(wsi, (unsigned char *)bp,
+ 4, LWS_WRITE_BINARY);
+
+ psf->state = FRAGSTATE_START_MESSAGE;
+
+ libwebsocket_callback_on_writable(context, wsi);
+ break;
+ }
+ break;
+
+ case LWS_CALLBACK_CLOSED:
+
+ terminate = 1;
+ break;
+
+ /* because we are protocols[0] ... */
+
+ case LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED:
+ if (strcmp(in, "deflate-stream") == 0) {
+ fprintf(stderr, "denied deflate-stream extension\n");
+ return 1;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+
+
+/* list of supported protocols and callbacks */
+
+static struct libwebsocket_protocols protocols[] = {
+ {
+ "fraggle-protocol",
+ callback_fraggle,
+ sizeof(struct per_session_data__fraggle),
+ },
+ {
+ NULL, NULL, 0 /* End of list */
+ }
+};
+
+static struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "port", required_argument, NULL, 'p' },
+ { "ssl", no_argument, NULL, 's' },
+ { "killmask", no_argument, NULL, 'k' },
+ { "interface", required_argument, NULL, 'i' },
+ { "client", no_argument, NULL, 'c' },
+ { NULL, 0, 0, 0 }
+};
+
+int main(int argc, char **argv)
+{
+ int n = 0;
+ const char *cert_path =
+ LOCAL_RESOURCE_PATH"/libwebsockets-test-server.pem";
+ const char *key_path =
+ LOCAL_RESOURCE_PATH"/libwebsockets-test-server.key.pem";
+ int port = 7681;
+ int use_ssl = 0;
+ struct libwebsocket_context *context;
+ int opts = 0;
+ char interface_name[128] = "";
+ const char *interface = NULL;
+ struct libwebsocket *wsi;
+ const char *address;
+ int server_port = port;
+
+ fprintf(stderr, "libwebsockets test fraggle\n"
+ "(C) Copyright 2010-2011 Andy Green <andy@warmcat.com> "
+ "licensed under LGPL2.1\n");
+
+ while (n >= 0) {
+ n = getopt_long(argc, argv, "ci:khsp:", options, NULL);
+ if (n < 0)
+ continue;
+ switch (n) {
+ case 's':
+ use_ssl = 1;
+ break;
+ case 'k':
+ opts = LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK;
+ break;
+ case 'p':
+ port = atoi(optarg);
+ server_port = port;
+ break;
+ case 'i':
+ strncpy(interface_name, optarg, sizeof interface_name);
+ interface_name[(sizeof interface_name) - 1] = '\0';
+ interface = interface_name;
+ break;
+ case 'c':
+ client = 1;
+ fprintf(stderr, " Client mode\n");
+ break;
+ case 'h':
+ fprintf(stderr, "Usage: libwebsockets-test-fraggle "
+ "[--port=<p>] [--ssl] [--client]\n");
+ exit(1);
+ }
+ }
+
+ if (client) {
+ server_port = CONTEXT_PORT_NO_LISTEN;
+ if (optind >= argc) {
+ fprintf(stderr, "Must give address of server\n");
+ return 1;
+ }
+ }
+
+ if (!use_ssl)
+ cert_path = key_path = NULL;
+
+ context = libwebsocket_create_context(server_port, interface, protocols,
+ libwebsocket_internal_extensions,
+ cert_path, key_path, -1, -1, opts);
+ if (context == NULL) {
+ fprintf(stderr, "libwebsocket init failed\n");
+ return -1;
+ }
+
+ if (client) {
+ address = argv[optind];
+ fprintf(stderr, "Connecting to %s:%u\n", address, port);
+ wsi = libwebsocket_client_connect(context, address,
+ port, use_ssl, "/", address,
+ "origin", protocols[PROTOCOL_FRAGGLE].name,
+ -1);
+ if (wsi == NULL) {
+ fprintf(stderr, "Client connect to server failed\n");
+ goto bail;
+ }
+ }
+
+ n = 0;
+ while (!n && !terminate)
+ n = libwebsocket_service(context, 50);
+
+ fprintf(stderr, "Terminating...\n");
+
+bail:
+ libwebsocket_context_destroy(context);
+
+ return 0;
+}
--- /dev/null
+/*
+ * libwebsockets-test-ping - libwebsockets floodping
+ *
+ * Copyright (C) 2011 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <string.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+
+#include <sys/ioctl.h>
+
+#include "../lib/libwebsockets.h"
+#include <poll.h>
+
+/*
+ * this is specified in the 04 standard, control frames can only have small
+ * payload length styles
+ */
+#define MAX_PING_PAYLOAD 125
+#define MAX_MIRROR_PAYLOAD 4096
+#define MAX_PING_CLIENTS 256
+#define PING_RINGBUFFER_SIZE 256
+
+static struct libwebsocket *ping_wsi[MAX_PING_CLIENTS];
+static unsigned int interval_us = 1000000;
+static unsigned int size = 64;
+static int flood;
+static const char *address;
+static unsigned char pingbuf[LWS_SEND_BUFFER_PRE_PADDING + MAX_MIRROR_PAYLOAD +
+ LWS_SEND_BUFFER_POST_PADDING];
+static char peer_name[128];
+static unsigned long started;
+static int screen_width = 80;
+static int use_mirror;
+static unsigned int write_options;
+
+static unsigned long rtt_min = 100000000;
+static unsigned long rtt_max;
+static unsigned long rtt_avg;
+static unsigned long global_rx_count;
+static unsigned long global_tx_count;
+static int clients = 1;
+static unsigned long interrupted_time;
+
+struct ping {
+ unsigned long issue_timestamp;
+ unsigned long index;
+ unsigned int seen;
+};
+
+struct per_session_data__ping {
+ unsigned long ping_index;
+
+ struct ping ringbuffer[PING_RINGBUFFER_SIZE];
+ int ringbuffer_head;
+ int ringbuffer_tail;
+
+ unsigned long rx_count;
+};
+
+/*
+ * uses the ping pong protocol features to provide an equivalent for the
+ * ping utility for 04+ websockets
+ */
+
+enum demo_protocols {
+
+ PROTOCOL_LWS_MIRROR,
+
+ /* always last */
+ DEMO_PROTOCOL_COUNT
+};
+
+
+static int
+callback_lws_mirror(struct libwebsocket_context * this,
+ struct libwebsocket *wsi,
+ enum libwebsocket_callback_reasons reason,
+ void *user, void *in, size_t len)
+{
+ struct timeval tv;
+ unsigned char *p;
+ int shift;
+ unsigned long l;
+ unsigned long iv;
+ int n;
+ int match = 0;
+ struct per_session_data__ping *psd = user;
+
+ switch (reason) {
+ case LWS_CALLBACK_CLOSED:
+
+ fprintf(stderr, "LWS_CALLBACK_CLOSED on %p\n", (void *)wsi);
+
+ /* remove closed guy */
+
+ for (n = 0; n < clients; n++)
+ if (ping_wsi[n] == wsi) {
+ clients--;
+ while (n < clients) {
+ ping_wsi[n] = ping_wsi[n + 1];
+ n++;
+ }
+ }
+
+ break;
+
+ case LWS_CALLBACK_CLIENT_ESTABLISHED:
+
+ psd->rx_count = 0;
+ psd->ping_index = 1;
+ psd->ringbuffer_head = 0;
+ psd->ringbuffer_tail = 0;
+
+ /*
+ * start the ball rolling,
+ * LWS_CALLBACK_CLIENT_WRITEABLE will come next service
+ */
+
+ libwebsocket_callback_on_writable(this, wsi);
+ break;
+
+ case LWS_CALLBACK_CLIENT_RECEIVE:
+ case LWS_CALLBACK_CLIENT_RECEIVE_PONG:
+ gettimeofday(&tv, NULL);
+ iv = (tv.tv_sec * 1000000) + tv.tv_usec;
+
+ psd->rx_count++;
+
+ shift = 56;
+ p = in;
+ l = 0;
+
+ while (shift >= 0) {
+ l |= (*p++) << shift;
+ shift -= 8;
+ }
+
+ /* find it in the ringbuffer, look backwards from head */
+ n = psd->ringbuffer_head;
+ while (!match) {
+
+ if (psd->ringbuffer[n].index == l) {
+ psd->ringbuffer[n].seen++;
+ match = 1;
+ continue;
+ }
+
+ if (n == psd->ringbuffer_tail) {
+ match = -1;
+ continue;
+ }
+
+ if (n == 0)
+ n = PING_RINGBUFFER_SIZE - 1;
+ else
+ n--;
+ }
+
+ if (match < 1) {
+
+ if (!flood)
+ fprintf(stderr, "%d bytes from %s: req=%ld "
+ "time=(unknown)\n", (int)len, address, l);
+ else
+ fprintf(stderr, "\b \b");
+
+ break;
+ }
+
+ if (psd->ringbuffer[n].seen > 1)
+ fprintf(stderr, "DUP! ");
+
+ if ((iv - psd->ringbuffer[n].issue_timestamp) < rtt_min)
+ rtt_min = iv - psd->ringbuffer[n].issue_timestamp;
+
+ if ((iv - psd->ringbuffer[n].issue_timestamp) > rtt_max)
+ rtt_max = iv - psd->ringbuffer[n].issue_timestamp;
+
+ rtt_avg += iv - psd->ringbuffer[n].issue_timestamp;
+ global_rx_count++;
+
+ if (!flood)
+ fprintf(stderr, "%d bytes from %s: req=%ld "
+ "time=%lu.%lums\n", (int)len, address, l,
+ (iv - psd->ringbuffer[n].issue_timestamp) / 1000,
+ ((iv - psd->ringbuffer[n].issue_timestamp) / 100) % 10);
+ else
+ fprintf(stderr, "\b \b");
+ break;
+
+ case LWS_CALLBACK_CLIENT_WRITEABLE:
+
+ shift = 56;
+ p = &pingbuf[LWS_SEND_BUFFER_PRE_PADDING];
+
+ /* 64-bit ping index in network byte order */
+
+ while (shift >= 0) {
+ *p++ = psd->ping_index >> shift;
+ shift -= 8;
+ }
+
+ gettimeofday(&tv, NULL);
+
+ psd->ringbuffer[psd->ringbuffer_head].issue_timestamp =
+ (tv.tv_sec * 1000000) + tv.tv_usec;
+ psd->ringbuffer[psd->ringbuffer_head].index = psd->ping_index++;
+ psd->ringbuffer[psd->ringbuffer_head].seen = 0;
+
+ if (psd->ringbuffer_head == PING_RINGBUFFER_SIZE - 1)
+ psd->ringbuffer_head = 0;
+ else
+ psd->ringbuffer_head++;
+
+ /* snip any re-used tail so we keep to the ring length */
+
+ if (psd->ringbuffer_tail == psd->ringbuffer_head) {
+ if (psd->ringbuffer_tail == PING_RINGBUFFER_SIZE - 1)
+ psd->ringbuffer_tail = 0;
+ else
+ psd->ringbuffer_tail++;
+ }
+
+ global_tx_count++;
+
+ if (use_mirror)
+ libwebsocket_write(wsi,
+ &pingbuf[LWS_SEND_BUFFER_PRE_PADDING],
+ size, write_options | LWS_WRITE_BINARY);
+ else
+ libwebsocket_write(wsi,
+ &pingbuf[LWS_SEND_BUFFER_PRE_PADDING],
+ size, write_options | LWS_WRITE_PING);
+
+ if (flood &&
+ (psd->ping_index - psd->rx_count) < (screen_width - 1))
+ fprintf(stderr, ".");
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+
+/* list of supported protocols and callbacks */
+
+static struct libwebsocket_protocols protocols[] = {
+
+ [PROTOCOL_LWS_MIRROR] = {
+ .name = "lws-mirror-protocol",
+ .callback = callback_lws_mirror,
+ .per_session_data_size = sizeof (struct per_session_data__ping),
+ },
+ [DEMO_PROTOCOL_COUNT] = { /* end of list */
+ .callback = NULL
+ }
+};
+
+static struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "port", required_argument, NULL, 'p' },
+ { "ssl", no_argument, NULL, 't' },
+ { "interval", required_argument, NULL, 'i' },
+ { "size", required_argument, NULL, 's' },
+ { "protocol", required_argument, NULL, 'n' },
+ { "flood", no_argument, NULL, 'f' },
+ { "mirror", no_argument, NULL, 'm' },
+ { "replicate", required_argument, NULL, 'r' },
+ { "killmask", no_argument, NULL, 'k' },
+ { "version", required_argument, NULL, 'v' },
+ { NULL, 0, 0, 0 }
+};
+
+
+static void
+signal_handler(int sig, siginfo_t *si, void *v)
+{
+ struct timeval tv;
+
+ gettimeofday(&tv, NULL);
+ interrupted_time = (tv.tv_sec * 1000000) + tv.tv_usec;
+}
+
+
+int main(int argc, char **argv)
+{
+ int n = 0;
+ int port = 7681;
+ int use_ssl = 0;
+ struct libwebsocket_context *context;
+ char protocol_name[256];
+ char ip[30];
+ struct sigaction sa;
+ struct timeval tv;
+ struct winsize w;
+ unsigned long oldus = 0;
+ unsigned long l;
+ int ietf_version = -1;
+
+ if (argc < 2)
+ goto usage;
+
+ address = argv[1];
+ optind++;
+
+ while (n >= 0) {
+ n = getopt_long(argc, argv, "v:kr:hmfts:n:i:p:", options, NULL);
+ if (n < 0)
+ continue;
+ switch (n) {
+ case 'm':
+ use_mirror = 1;
+ break;
+ case 't':
+ use_ssl = 2; /* 2 = allow selfsigned */
+ break;
+ case 'p':
+ port = atoi(optarg);
+ break;
+ case 'n':
+ strncpy(protocol_name, optarg, sizeof protocol_name);
+ protocol_name[(sizeof protocol_name) - 1] = '\0';
+ protocols[PROTOCOL_LWS_MIRROR].name = protocol_name;
+ break;
+ case 'i':
+ interval_us = 1000000.0 * atof(optarg);
+ break;
+ case 's':
+ size = atoi(optarg);
+ break;
+ case 'f':
+ flood = 1;
+ break;
+ case 'r':
+ clients = atoi(optarg);
+ if (clients > MAX_PING_CLIENTS || clients < 1) {
+ fprintf(stderr, "Max clients supportd = %d\n",
+ MAX_PING_CLIENTS);
+ return 1;
+ }
+ break;
+ case 'k':
+ write_options = LWS_WRITE_CLIENT_IGNORE_XOR_MASK;
+ break;
+ case 'v':
+ ietf_version = atoi(optarg);
+ break;
+
+ case 'h':
+ goto usage;
+ }
+ }
+
+ if (!use_mirror) {
+ if (size > MAX_PING_PAYLOAD) {
+ fprintf(stderr, "Max ping opcode payload size %d\n",
+ MAX_PING_PAYLOAD);
+ return 1;
+ }
+ } else {
+ if (size > MAX_MIRROR_PAYLOAD) {
+ fprintf(stderr, "Max mirror payload size %d\n",
+ MAX_MIRROR_PAYLOAD);
+ return 1;
+ }
+ }
+
+
+ if (isatty(STDOUT_FILENO))
+ if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1)
+ if (w.ws_col > 0)
+ screen_width = w.ws_col;
+
+ context = libwebsocket_create_context(CONTEXT_PORT_NO_LISTEN, NULL,
+ protocols,
+ libwebsocket_internal_extensions,
+ NULL, NULL, -1, -1, 0);
+ if (context == NULL) {
+ fprintf(stderr, "Creating libwebsocket context failed\n");
+ return 1;
+ }
+
+ /* create client websockets using dumb increment protocol */
+
+ for (n = 0; n < clients; n++) {
+ ping_wsi[n] = libwebsocket_client_connect(context, address,
+ port, use_ssl, "/", address,
+ "origin", protocols[PROTOCOL_LWS_MIRROR].name,
+ ietf_version);
+ if (ping_wsi[n] == NULL) {
+ fprintf(stderr, "client connnection %d failed to "
+ "connect\n", n);
+ return 1;
+ }
+ }
+
+ libwebsockets_get_peer_addresses(
+ libwebsocket_get_socket_fd(ping_wsi[0]),
+ peer_name, sizeof peer_name, ip, sizeof ip);
+
+ fprintf(stderr, "Websocket PING %s (%s) %d bytes of data.\n",
+ peer_name, ip, size);
+
+ /* set the ^C handler */
+
+ sa.sa_sigaction = signal_handler;
+ sa.sa_flags = SA_SIGINFO;
+ sigemptyset(&sa.sa_mask);
+ sigaction(SIGINT, &sa, NULL);
+
+ gettimeofday(&tv, NULL);
+ started = (tv.tv_sec * 1000000) + tv.tv_usec;
+
+ /* service loop */
+
+ n = 0;
+ while (n >= 0) {
+
+ gettimeofday(&tv, NULL);
+ l = (tv.tv_sec * 1000000) + tv.tv_usec;
+
+ /* servers can hang up on us */
+
+ if (clients == 0) {
+ n = -1;
+ continue;
+ }
+
+ if (!interrupted_time) {
+ if ((l - oldus) > interval_us) {
+ for (n = 0; n < clients; n++)
+ libwebsocket_callback_on_writable(
+ context, ping_wsi[n]);
+ oldus = l;
+ }
+ } else
+
+ /* allow time for in-flight pongs to come */
+
+ if ((l - interrupted_time) > 250000) {
+ n = -1;
+ continue;
+ }
+
+ if (!interval_us)
+ n = libwebsocket_service(context, 0);
+ else
+ n = libwebsocket_service(context, 1);
+ }
+
+ /* stats */
+
+ fprintf(stderr, "\n--- %s websocket ping statistics "
+ "using %d connections ---\n"
+ "%lu packets transmitted, %lu received, "
+ "%lu%% packet loss, time %ldms\n"
+ "rtt min/avg/max = %0.3f/%0.3f/%0.3f ms\n"
+ "payload bandwidth average %0.3f KiBytes/sec\n",
+ peer_name, clients, global_tx_count, global_rx_count,
+ ((global_tx_count - global_rx_count) * 100) / global_tx_count,
+ (l - started) / 1000,
+ ((double)rtt_min) / 1000.0,
+ ((double)rtt_avg / global_rx_count) / 1000.0,
+ ((double)rtt_max) / 1000.0,
+ ((double)global_rx_count * (double)size) /
+ ((double)(l - started) / 1000000.0) / 1024.0);
+
+ libwebsocket_context_destroy(context);
+
+ return 0;
+
+usage:
+ fprintf(stderr, "Usage: libwebsockets-test-ping "
+ "<server address> [--port=<p>] "
+ "[--ssl] [--interval=<float sec>] "
+ "[--size=<bytes>] "
+ "[--protocol=<protocolname>] "
+ "[--mirror] "
+ "[--replicate=clients>]"
+ "[--version <version>]"
+ "\n");
+ return 1;
+}
--- /dev/null
+/*
+ * libwebsockets-test-server-extpoll - libwebsockets external poll loop sample
+ *
+ * This acts the same as libwebsockets-test-server but works with the poll
+ * loop taken out of libwebsockets and into this app. It's an example of how
+ * you can integrate libwebsockets polling into an app that already has its
+ * own poll loop.
+ *
+ * Copyright (C) 2010-2011 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <string.h>
+#include <sys/time.h>
+#ifdef __MINGW32__
+#include "../win32port/win32helpers/websock-w32.h"
+#else
+#ifdef __MINGW64__
+#include "../win32port/win32helpers/websock-w32.h"
+#else
+#include <poll.h>
+#endif
+#endif
+
+#include "../lib/libwebsockets.h"
+
+
+/*
+ * This demo server shows how to use libwebsockets for one or more
+ * websocket protocols in the same server
+ *
+ * It defines the following websocket protocols:
+ *
+ * dumb-increment-protocol: once the socket is opened, an incrementing
+ * ascii string is sent down it every 50ms.
+ * If you send "reset\n" on the websocket, then
+ * the incrementing number is reset to 0.
+ *
+ * lws-mirror-protocol: copies any received packet to every connection also
+ * using this protocol, including the sender
+ */
+
+#define MAX_POLL_ELEMENTS 100
+struct pollfd pollfds[100];
+int count_pollfds = 0;
+
+
+
+enum demo_protocols {
+ /* always first */
+ PROTOCOL_HTTP = 0,
+
+ PROTOCOL_DUMB_INCREMENT,
+ PROTOCOL_LWS_MIRROR,
+
+ /* always last */
+ DEMO_PROTOCOL_COUNT
+};
+
+
+#define LOCAL_RESOURCE_PATH INSTALL_DATADIR"/libwebsockets-test-server"
+
+/* this protocol server (always the first one) just knows how to do HTTP */
+
+static int callback_http(struct libwebsocket_context * this,
+ struct libwebsocket *wsi,
+ enum libwebsocket_callback_reasons reason, void *user,
+ void *in, size_t len)
+{
+ int n;
+ char client_name[128];
+ char client_ip[128];
+
+ switch (reason) {
+ case LWS_CALLBACK_HTTP:
+ fprintf(stderr, "serving HTTP URI %s\n", (char *)in);
+
+ if (in && strcmp(in, "/favicon.ico") == 0) {
+ if (libwebsockets_serve_http_file(wsi,
+ LOCAL_RESOURCE_PATH"/favicon.ico", "image/x-icon"))
+ fprintf(stderr, "Failed to send favicon\n");
+ break;
+ }
+
+ /* send the script... when it runs it'll start websockets */
+
+ if (libwebsockets_serve_http_file(wsi,
+ LOCAL_RESOURCE_PATH"/test.html", "text/html"))
+ fprintf(stderr, "Failed to send HTTP file\n");
+ break;
+
+ /*
+ * callback for confirming to continue with client IP appear in
+ * protocol 0 callback since no websocket protocol has been agreed
+ * yet. You can just ignore this if you won't filter on client IP
+ * since the default uhandled callback return is 0 meaning let the
+ * connection continue.
+ */
+
+ case LWS_CALLBACK_FILTER_NETWORK_CONNECTION:
+
+ libwebsockets_get_peer_addresses((int)(long)user, client_name,
+ sizeof(client_name), client_ip, sizeof(client_ip));
+
+ fprintf(stderr, "Received network connect from %s (%s)\n",
+ client_name, client_ip);
+
+ /* if we returned non-zero from here, we kill the connection */
+ break;
+
+ /*
+ * callbacks for managing the external poll() array appear in
+ * protocol 0 callback
+ */
+
+ case LWS_CALLBACK_ADD_POLL_FD:
+ pollfds[count_pollfds].fd = (int)(long)user;
+ pollfds[count_pollfds].events = (int)len;
+ pollfds[count_pollfds++].revents = 0;
+ break;
+
+ case LWS_CALLBACK_DEL_POLL_FD:
+ for (n = 0; n < count_pollfds; n++)
+ if (pollfds[n].fd == (int)(long)user)
+ while (n < count_pollfds) {
+ pollfds[n] = pollfds[n + 1];
+ n++;
+ }
+ count_pollfds--;
+ break;
+
+ case LWS_CALLBACK_SET_MODE_POLL_FD:
+ for (n = 0; n < count_pollfds; n++)
+ if (pollfds[n].fd == (int)(long)user)
+ pollfds[n].events |= (int)(long)len;
+ break;
+
+ case LWS_CALLBACK_CLEAR_MODE_POLL_FD:
+ for (n = 0; n < count_pollfds; n++)
+ if (pollfds[n].fd == (int)(long)user)
+ pollfds[n].events &= ~(int)(long)len;
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+/*
+ * this is just an example of parsing handshake headers, you don't need this
+ * in your code unless you will filter allowing connections by the header
+ * content
+ */
+
+static void
+dump_handshake_info(struct lws_tokens *lwst)
+{
+ int n;
+ static const char *token_names[] = {
+ [WSI_TOKEN_GET_URI] = "GET URI",
+ [WSI_TOKEN_HOST] = "Host",
+ [WSI_TOKEN_CONNECTION] = "Connection",
+ [WSI_TOKEN_KEY1] = "key 1",
+ [WSI_TOKEN_KEY2] = "key 2",
+ [WSI_TOKEN_PROTOCOL] = "Protocol",
+ [WSI_TOKEN_UPGRADE] = "Upgrade",
+ [WSI_TOKEN_ORIGIN] = "Origin",
+ [WSI_TOKEN_DRAFT] = "Draft",
+ [WSI_TOKEN_CHALLENGE] = "Challenge",
+
+ /* new for 04 */
+ [WSI_TOKEN_KEY] = "Key",
+ [WSI_TOKEN_VERSION] = "Version",
+ [WSI_TOKEN_SWORIGIN] = "Sworigin",
+
+ /* new for 05 */
+ [WSI_TOKEN_EXTENSIONS] = "Extensions",
+
+ /* client receives these */
+ [WSI_TOKEN_ACCEPT] = "Accept",
+ [WSI_TOKEN_NONCE] = "Nonce",
+ [WSI_TOKEN_HTTP] = "Http",
+ [WSI_TOKEN_MUXURL] = "MuxURL",
+ };
+
+ for (n = 0; n < WSI_TOKEN_COUNT; n++) {
+ if (lwst[n].token == NULL)
+ continue;
+
+ fprintf(stderr, " %s = %s\n", token_names[n], lwst[n].token);
+ }
+}
+
+/* dumb_increment protocol */
+
+/*
+ * one of these is auto-created for each connection and a pointer to the
+ * appropriate instance is passed to the callback in the user parameter
+ *
+ * for this example protocol we use it to individualize the count for each
+ * connection.
+ */
+
+struct per_session_data__dumb_increment {
+ int number;
+};
+
+static int
+callback_dumb_increment(struct libwebsocket_context * this,
+ struct libwebsocket *wsi,
+ enum libwebsocket_callback_reasons reason,
+ void *user, void *in, size_t len)
+{
+ int n;
+ unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 512 +
+ LWS_SEND_BUFFER_POST_PADDING];
+ unsigned char *p = &buf[LWS_SEND_BUFFER_PRE_PADDING];
+ struct per_session_data__dumb_increment *pss = user;
+
+ switch (reason) {
+
+ case LWS_CALLBACK_ESTABLISHED:
+ pss->number = 0;
+ break;
+
+ /*
+ * in this protocol, we just use the broadcast action as the chance to
+ * send our own connection-specific data and ignore the broadcast info
+ * that is available in the 'in' parameter
+ */
+
+ case LWS_CALLBACK_BROADCAST:
+ n = sprintf((char *)p, "%d", pss->number++);
+ n = libwebsocket_write(wsi, p, n, LWS_WRITE_TEXT);
+ if (n < 0) {
+ fprintf(stderr, "ERROR writing to socket");
+ return 1;
+ }
+ break;
+
+ case LWS_CALLBACK_RECEIVE:
+ fprintf(stderr, "rx %d\n", (int)len);
+ if (len < 6)
+ break;
+ if (strcmp(in, "reset\n") == 0)
+ pss->number = 0;
+ break;
+
+ /*
+ * this just demonstrates how to use the protocol filter. If you won't
+ * study and reject connections based on header content, you don't need
+ * to handle this callback
+ */
+
+ case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
+ dump_handshake_info((struct lws_tokens *)(long)user);
+ /* you could return non-zero here and kill the connection */
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+
+/* lws-mirror_protocol */
+
+#define MAX_MESSAGE_QUEUE 64
+
+struct per_session_data__lws_mirror {
+ struct libwebsocket *wsi;
+ int ringbuffer_tail;
+};
+
+struct a_message {
+ void *payload;
+ size_t len;
+};
+
+static struct a_message ringbuffer[MAX_MESSAGE_QUEUE];
+static int ringbuffer_head;
+
+
+static int
+callback_lws_mirror(struct libwebsocket_context * this,
+ struct libwebsocket *wsi,
+ enum libwebsocket_callback_reasons reason,
+ void *user, void *in, size_t len)
+{
+ int n;
+ struct per_session_data__lws_mirror *pss = user;
+
+ switch (reason) {
+
+ case LWS_CALLBACK_ESTABLISHED:
+ pss->ringbuffer_tail = ringbuffer_head;
+ pss->wsi = wsi;
+ libwebsocket_callback_on_writable(this, wsi);
+ break;
+
+ case LWS_CALLBACK_SERVER_WRITEABLE:
+
+ if (pss->ringbuffer_tail != ringbuffer_head) {
+
+ n = libwebsocket_write(wsi, (unsigned char *)
+ ringbuffer[pss->ringbuffer_tail].payload +
+ LWS_SEND_BUFFER_PRE_PADDING,
+ ringbuffer[pss->ringbuffer_tail].len,
+ LWS_WRITE_TEXT);
+
+ if (n < 0) {
+ fprintf(stderr, "ERROR writing to socket");
+ exit(1);
+ }
+
+ if (pss->ringbuffer_tail == (MAX_MESSAGE_QUEUE - 1))
+ pss->ringbuffer_tail = 0;
+ else
+ pss->ringbuffer_tail++;
+
+ if (((ringbuffer_head - pss->ringbuffer_tail) %
+ MAX_MESSAGE_QUEUE) < (MAX_MESSAGE_QUEUE - 15))
+ libwebsocket_rx_flow_control(wsi, 1);
+
+ libwebsocket_callback_on_writable(this, wsi);
+
+ }
+ break;
+
+ case LWS_CALLBACK_BROADCAST:
+ n = libwebsocket_write(wsi, in, len, LWS_WRITE_TEXT);
+ if (n < 0)
+ fprintf(stderr, "mirror write failed\n");
+ break;
+
+ case LWS_CALLBACK_RECEIVE:
+
+ if (ringbuffer[ringbuffer_head].payload)
+ free(ringbuffer[ringbuffer_head].payload);
+
+ ringbuffer[ringbuffer_head].payload =
+ malloc(LWS_SEND_BUFFER_PRE_PADDING + len +
+ LWS_SEND_BUFFER_POST_PADDING);
+ ringbuffer[ringbuffer_head].len = len;
+ memcpy((char *)ringbuffer[ringbuffer_head].payload +
+ LWS_SEND_BUFFER_PRE_PADDING, in, len);
+ if (ringbuffer_head == (MAX_MESSAGE_QUEUE - 1))
+ ringbuffer_head = 0;
+ else
+ ringbuffer_head++;
+
+ if (((ringbuffer_head - pss->ringbuffer_tail) %
+ MAX_MESSAGE_QUEUE) > (MAX_MESSAGE_QUEUE - 10))
+ libwebsocket_rx_flow_control(wsi, 0);
+
+ libwebsocket_callback_on_writable_all_protocol(
+ libwebsockets_get_protocol(wsi));
+ break;
+
+ /*
+ * this just demonstrates how to use the protocol filter. If you won't
+ * study and reject connections based on header content, you don't need
+ * to handle this callback
+ */
+
+ case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
+ dump_handshake_info((struct lws_tokens *)(long)user);
+ /* you could return non-zero here and kill the connection */
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+
+/* list of supported protocols and callbacks */
+
+static struct libwebsocket_protocols protocols[] = {
+ /* first protocol must always be HTTP handler */
+
+ {
+ "http-only", /* name */
+ callback_http, /* callback */
+ 0 /* per_session_data_size */
+ },
+ {
+ "dumb-increment-protocol",
+ callback_dumb_increment,
+ sizeof(struct per_session_data__dumb_increment),
+ },
+ {
+ "lws-mirror-protocol",
+ callback_lws_mirror,
+ sizeof(struct per_session_data__lws_mirror)
+ },
+ {
+ NULL, NULL, 0 /* End of list */
+ }
+};
+
+static struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "port", required_argument, NULL, 'p' },
+ { "ssl", no_argument, NULL, 's' },
+ { "killmask", no_argument, NULL, 'k' },
+ { "interface", required_argument, NULL, 'i' },
+ { NULL, 0, 0, 0 }
+};
+
+int main(int argc, char **argv)
+{
+ int n = 0;
+ const char *cert_path =
+ LOCAL_RESOURCE_PATH"/libwebsockets-test-server.pem";
+ const char *key_path =
+ LOCAL_RESOURCE_PATH"/libwebsockets-test-server.key.pem";
+ unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 1024 +
+ LWS_SEND_BUFFER_POST_PADDING];
+ int port = 7681;
+ int use_ssl = 0;
+ struct libwebsocket_context *context;
+ int opts = 0;
+ unsigned int oldus = 0;
+ char interface_name[128] = "";
+ const char *interface_ptr = NULL;
+
+ fprintf(stderr, "libwebsockets test server with external poll()\n"
+ "(C) Copyright 2010-2011 Andy Green <andy@warmcat.com> "
+ "licensed under LGPL2.1\n");
+
+ while (n >= 0) {
+ n = getopt_long(argc, argv, "i:khsp:", options, NULL);
+ if (n < 0)
+ continue;
+ switch (n) {
+ case 's':
+ use_ssl = 1;
+ break;
+ case 'k':
+ opts = LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK;
+ break;
+ case 'p':
+ port = atoi(optarg);
+ break;
+ case 'i':
+ strncpy(interface_name, optarg, sizeof interface_name);
+ interface_name[(sizeof interface_name) - 1] = '\0';
+ interface_ptr = interface_name;
+ break;
+ case 'h':
+ fprintf(stderr, "Usage: test-server "
+ "[--port=<p>] [--ssl]\n");
+ exit(1);
+ }
+ }
+
+ if (!use_ssl)
+ cert_path = key_path = NULL;
+
+ context = libwebsocket_create_context(port, interface_ptr, protocols,
+ libwebsocket_internal_extensions,
+ cert_path, key_path, -1, -1, opts);
+ if (context == NULL) {
+ fprintf(stderr, "libwebsocket init failed\n");
+ return -1;
+ }
+
+ buf[LWS_SEND_BUFFER_PRE_PADDING] = 'x';
+
+ /*
+ * This is an example of an existing application's explicit poll()
+ * loop that libwebsockets can integrate with.
+ */
+
+ while (1) {
+ struct timeval tv;
+
+ /*
+ * this represents an existing server's single poll action
+ * which also includes libwebsocket sockets
+ */
+
+ n = poll(pollfds, count_pollfds, 25);
+ if (n < 0)
+ goto done;
+
+ if (n)
+ for (n = 0; n < count_pollfds; n++)
+ if (pollfds[n].revents)
+ /*
+ * returns immediately if the fd does not
+ * match anything under libwebsockets
+ * control
+ */
+ if (libwebsocket_service_fd(context,
+ &pollfds[n]))
+ goto done;
+
+ /* do our broadcast periodically */
+
+ gettimeofday(&tv, NULL);
+
+ /*
+ * This broadcasts to all dumb-increment-protocol connections
+ * at 20Hz.
+ *
+ * We're just sending a character 'x', in these examples the
+ * callbacks send their own per-connection content.
+ *
+ * You have to send something with nonzero length to get the
+ * callback actions delivered.
+ *
+ * We take care of pre-and-post padding allocation.
+ */
+
+ if (((unsigned int)tv.tv_usec - oldus) > 50000) {
+ libwebsockets_broadcast(
+ &protocols[PROTOCOL_DUMB_INCREMENT],
+ &buf[LWS_SEND_BUFFER_PRE_PADDING], 1);
+ oldus = tv.tv_usec;
+ }
+ }
+
+done:
+ libwebsocket_context_destroy(context);
+
+ return 0;
+}
--- /dev/null
+/*
+ * libwebsockets-test-server - libwebsockets test implementation
+ *
+ * Copyright (C) 2010-2011 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <string.h>
+#include <sys/time.h>
+
+#include "../lib/libwebsockets.h"
+
+static int close_testing;
+
+/*
+ * This demo server shows how to use libwebsockets for one or more
+ * websocket protocols in the same server
+ *
+ * It defines the following websocket protocols:
+ *
+ * dumb-increment-protocol: once the socket is opened, an incrementing
+ * ascii string is sent down it every 50ms.
+ * If you send "reset\n" on the websocket, then
+ * the incrementing number is reset to 0.
+ *
+ * lws-mirror-protocol: copies any received packet to every connection also
+ * using this protocol, including the sender
+ */
+
+enum demo_protocols {
+ /* always first */
+ PROTOCOL_HTTP = 0,
+
+ PROTOCOL_DUMB_INCREMENT,
+ PROTOCOL_LWS_MIRROR,
+
+ /* always last */
+ DEMO_PROTOCOL_COUNT
+};
+
+
+#define LOCAL_RESOURCE_PATH INSTALL_DATADIR"/libwebsockets-test-server"
+
+/* this protocol server (always the first one) just knows how to do HTTP */
+
+static int callback_http(struct libwebsocket_context *context,
+ struct libwebsocket *wsi,
+ enum libwebsocket_callback_reasons reason, void *user,
+ void *in, size_t len)
+{
+ char client_name[128];
+ char client_ip[128];
+
+ switch (reason) {
+ case LWS_CALLBACK_HTTP:
+ fprintf(stderr, "serving HTTP URI %s\n", (char *)in);
+
+ if (in && strcmp(in, "/favicon.ico") == 0) {
+ if (libwebsockets_serve_http_file(wsi,
+ LOCAL_RESOURCE_PATH"/favicon.ico", "image/x-icon"))
+ fprintf(stderr, "Failed to send favicon\n");
+ break;
+ }
+
+ /* send the script... when it runs it'll start websockets */
+
+ if (libwebsockets_serve_http_file(wsi,
+ LOCAL_RESOURCE_PATH"/test.html", "text/html"))
+ fprintf(stderr, "Failed to send HTTP file\n");
+ break;
+
+ /*
+ * callback for confirming to continue with client IP appear in
+ * protocol 0 callback since no websocket protocol has been agreed
+ * yet. You can just ignore this if you won't filter on client IP
+ * since the default uhandled callback return is 0 meaning let the
+ * connection continue.
+ */
+
+ case LWS_CALLBACK_FILTER_NETWORK_CONNECTION:
+
+ libwebsockets_get_peer_addresses((int)(long)user, client_name,
+ sizeof(client_name), client_ip, sizeof(client_ip));
+
+ fprintf(stderr, "Received network connect from %s (%s)\n",
+ client_name, client_ip);
+
+ /* if we returned non-zero from here, we kill the connection */
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+
+/*
+ * this is just an example of parsing handshake headers, you don't need this
+ * in your code unless you will filter allowing connections by the header
+ * content
+ */
+
+static void
+dump_handshake_info(struct lws_tokens *lwst)
+{
+ int n;
+ static const char *token_names[WSI_TOKEN_COUNT] = {
+ /*[WSI_TOKEN_GET_URI] =*/ "GET URI",
+ /*[WSI_TOKEN_HOST] =*/ "Host",
+ /*[WSI_TOKEN_CONNECTION] =*/ "Connection",
+ /*[WSI_TOKEN_KEY1] =*/ "key 1",
+ /*[WSI_TOKEN_KEY2] =*/ "key 2",
+ /*[WSI_TOKEN_PROTOCOL] =*/ "Protocol",
+ /*[WSI_TOKEN_UPGRADE] =*/ "Upgrade",
+ /*[WSI_TOKEN_ORIGIN] =*/ "Origin",
+ /*[WSI_TOKEN_DRAFT] =*/ "Draft",
+ /*[WSI_TOKEN_CHALLENGE] =*/ "Challenge",
+
+ /* new for 04 */
+ /*[WSI_TOKEN_KEY] =*/ "Key",
+ /*[WSI_TOKEN_VERSION] =*/ "Version",
+ /*[WSI_TOKEN_SWORIGIN] =*/ "Sworigin",
+
+ /* new for 05 */
+ /*[WSI_TOKEN_EXTENSIONS] =*/ "Extensions",
+
+ /* client receives these */
+ /*[WSI_TOKEN_ACCEPT] =*/ "Accept",
+ /*[WSI_TOKEN_NONCE] =*/ "Nonce",
+ /*[WSI_TOKEN_HTTP] =*/ "Http",
+ /*[WSI_TOKEN_MUXURL] =*/ "MuxURL",
+ };
+
+ for (n = 0; n < WSI_TOKEN_COUNT; n++) {
+ if (lwst[n].token == NULL)
+ continue;
+
+ fprintf(stderr, " %s = %s\n", token_names[n], lwst[n].token);
+ }
+}
+
+/* dumb_increment protocol */
+
+/*
+ * one of these is auto-created for each connection and a pointer to the
+ * appropriate instance is passed to the callback in the user parameter
+ *
+ * for this example protocol we use it to individualize the count for each
+ * connection.
+ */
+
+struct per_session_data__dumb_increment {
+ int number;
+};
+
+static int
+callback_dumb_increment(struct libwebsocket_context *context,
+ struct libwebsocket *wsi,
+ enum libwebsocket_callback_reasons reason,
+ void *user, void *in, size_t len)
+{
+ int n;
+ unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 512 +
+ LWS_SEND_BUFFER_POST_PADDING];
+ unsigned char *p = &buf[LWS_SEND_BUFFER_PRE_PADDING];
+ struct per_session_data__dumb_increment *pss = user;
+
+ switch (reason) {
+
+ case LWS_CALLBACK_ESTABLISHED:
+ fprintf(stderr, "callback_dumb_increment: "
+ "LWS_CALLBACK_ESTABLISHED\n");
+ pss->number = 0;
+ break;
+
+ /*
+ * in this protocol, we just use the broadcast action as the chance to
+ * send our own connection-specific data and ignore the broadcast info
+ * that is available in the 'in' parameter
+ */
+
+ case LWS_CALLBACK_BROADCAST:
+ n = sprintf((char *)p, "%d", pss->number++);
+ n = libwebsocket_write(wsi, p, n, LWS_WRITE_TEXT);
+ if (n < 0) {
+ fprintf(stderr, "ERROR writing to socket");
+ return 1;
+ }
+ if (close_testing && pss->number == 50) {
+ fprintf(stderr, "close tesing limit, closing\n");
+ libwebsocket_close_and_free_session(context, wsi,
+ LWS_CLOSE_STATUS_NORMAL);
+ }
+ break;
+
+ case LWS_CALLBACK_RECEIVE:
+ fprintf(stderr, "rx %d\n", (int)len);
+ if (len < 6)
+ break;
+ if (strcmp(in, "reset\n") == 0)
+ pss->number = 0;
+ break;
+ /*
+ * this just demonstrates how to use the protocol filter. If you won't
+ * study and reject connections based on header content, you don't need
+ * to handle this callback
+ */
+
+ case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
+ dump_handshake_info((struct lws_tokens *)(long)user);
+ /* you could return non-zero here and kill the connection */
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+
+/* lws-mirror_protocol */
+
+#define MAX_MESSAGE_QUEUE 64
+
+struct per_session_data__lws_mirror {
+ struct libwebsocket *wsi;
+ int ringbuffer_tail;
+};
+
+struct a_message {
+ void *payload;
+ size_t len;
+};
+
+static struct a_message ringbuffer[MAX_MESSAGE_QUEUE];
+static int ringbuffer_head;
+
+
+static int
+callback_lws_mirror(struct libwebsocket_context *context,
+ struct libwebsocket *wsi,
+ enum libwebsocket_callback_reasons reason,
+ void *user, void *in, size_t len)
+{
+ int n;
+ struct per_session_data__lws_mirror *pss = user;
+
+ switch (reason) {
+
+ case LWS_CALLBACK_ESTABLISHED:
+ fprintf(stderr, "callback_lws_mirror: "
+ "LWS_CALLBACK_ESTABLISHED\n");
+ pss->ringbuffer_tail = ringbuffer_head;
+ pss->wsi = wsi;
+ break;
+
+ case LWS_CALLBACK_SERVER_WRITEABLE:
+ if (close_testing)
+ break;
+ if (pss->ringbuffer_tail != ringbuffer_head) {
+
+ n = libwebsocket_write(wsi, (unsigned char *)
+ ringbuffer[pss->ringbuffer_tail].payload +
+ LWS_SEND_BUFFER_PRE_PADDING,
+ ringbuffer[pss->ringbuffer_tail].len,
+ LWS_WRITE_TEXT);
+ if (n < 0) {
+ fprintf(stderr, "ERROR writing to socket");
+ exit(1);
+ }
+
+ if (pss->ringbuffer_tail == (MAX_MESSAGE_QUEUE - 1))
+ pss->ringbuffer_tail = 0;
+ else
+ pss->ringbuffer_tail++;
+
+ if (((ringbuffer_head - pss->ringbuffer_tail) %
+ MAX_MESSAGE_QUEUE) < (MAX_MESSAGE_QUEUE - 15))
+ libwebsocket_rx_flow_control(wsi, 1);
+
+ libwebsocket_callback_on_writable(context, wsi);
+
+ }
+ break;
+
+ case LWS_CALLBACK_BROADCAST:
+ n = libwebsocket_write(wsi, in, len, LWS_WRITE_TEXT);
+ if (n < 0)
+ fprintf(stderr, "mirror write failed\n");
+ break;
+
+ case LWS_CALLBACK_RECEIVE:
+
+ if (ringbuffer[ringbuffer_head].payload)
+ free(ringbuffer[ringbuffer_head].payload);
+
+ ringbuffer[ringbuffer_head].payload =
+ malloc(LWS_SEND_BUFFER_PRE_PADDING + len +
+ LWS_SEND_BUFFER_POST_PADDING);
+ ringbuffer[ringbuffer_head].len = len;
+ memcpy((char *)ringbuffer[ringbuffer_head].payload +
+ LWS_SEND_BUFFER_PRE_PADDING, in, len);
+ if (ringbuffer_head == (MAX_MESSAGE_QUEUE - 1))
+ ringbuffer_head = 0;
+ else
+ ringbuffer_head++;
+
+ if (((ringbuffer_head - pss->ringbuffer_tail) %
+ MAX_MESSAGE_QUEUE) > (MAX_MESSAGE_QUEUE - 10))
+ libwebsocket_rx_flow_control(wsi, 0);
+
+ libwebsocket_callback_on_writable_all_protocol(
+ libwebsockets_get_protocol(wsi));
+ break;
+ /*
+ * this just demonstrates how to use the protocol filter. If you won't
+ * study and reject connections based on header content, you don't need
+ * to handle this callback
+ */
+
+ case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
+ dump_handshake_info((struct lws_tokens *)(long)user);
+ /* you could return non-zero here and kill the connection */
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+
+/* list of supported protocols and callbacks */
+
+static struct libwebsocket_protocols protocols[] = {
+ /* first protocol must always be HTTP handler */
+
+ {
+ "http-only", /* name */
+ callback_http, /* callback */
+ 0 /* per_session_data_size */
+ },
+ {
+ "dumb-increment-protocol",
+ callback_dumb_increment,
+ sizeof(struct per_session_data__dumb_increment),
+ },
+ {
+ "lws-mirror-protocol",
+ callback_lws_mirror,
+ sizeof(struct per_session_data__lws_mirror)
+ },
+ {
+ NULL, NULL, 0 /* End of list */
+ }
+};
+
+static struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "port", required_argument, NULL, 'p' },
+ { "ssl", no_argument, NULL, 's' },
+ { "killmask", no_argument, NULL, 'k' },
+ { "interface", required_argument, NULL, 'i' },
+ { "closetest", no_argument, NULL, 'c' },
+ { NULL, 0, 0, 0 }
+};
+
+int main(int argc, char **argv)
+{
+ int n = 0;
+ const char *cert_path =
+ LOCAL_RESOURCE_PATH"/libwebsockets-test-server.pem";
+ const char *key_path =
+ LOCAL_RESOURCE_PATH"/libwebsockets-test-server.key.pem";
+ unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 1024 +
+ LWS_SEND_BUFFER_POST_PADDING];
+ int port = 7681;
+ int use_ssl = 0;
+ struct libwebsocket_context *context;
+ int opts = 0;
+ char interface_name[128] = "";
+ const char *interface = NULL;
+#ifdef LWS_NO_FORK
+ unsigned int oldus = 0;
+#endif
+
+ fprintf(stderr, "libwebsockets test server\n"
+ "(C) Copyright 2010-2011 Andy Green <andy@warmcat.com> "
+ "licensed under LGPL2.1\n");
+
+ while (n >= 0) {
+ n = getopt_long(argc, argv, "ci:khsp:", options, NULL);
+ if (n < 0)
+ continue;
+ switch (n) {
+ case 's':
+ use_ssl = 1;
+ break;
+ case 'k':
+ opts = LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK;
+ break;
+ case 'p':
+ port = atoi(optarg);
+ break;
+ case 'i':
+ strncpy(interface_name, optarg, sizeof interface_name);
+ interface_name[(sizeof interface_name) - 1] = '\0';
+ interface = interface_name;
+ break;
+ case 'c':
+ close_testing = 1;
+ fprintf(stderr, " Close testing mode -- closes on "
+ "client after 50 dumb increments"
+ "and suppresses lws_mirror spam\n");
+ break;
+ case 'h':
+ fprintf(stderr, "Usage: test-server "
+ "[--port=<p>] [--ssl]\n");
+ exit(1);
+ }
+ }
+
+ if (!use_ssl)
+ cert_path = key_path = NULL;
+
+ context = libwebsocket_create_context(port, interface, protocols,
+ libwebsocket_internal_extensions,
+ cert_path, key_path, -1, -1, opts);
+ if (context == NULL) {
+ fprintf(stderr, "libwebsocket init failed\n");
+ return -1;
+ }
+
+ buf[LWS_SEND_BUFFER_PRE_PADDING] = 'x';
+
+#ifdef LWS_NO_FORK
+
+ /*
+ * This example shows how to work with no forked service loop
+ */
+
+ fprintf(stderr, " Using no-fork service loop\n");
+
+ n = 0;
+ while (n >= 0) {
+ struct timeval tv;
+
+ gettimeofday(&tv, NULL);
+
+ /*
+ * This broadcasts to all dumb-increment-protocol connections
+ * at 20Hz.
+ *
+ * We're just sending a character 'x', in these examples the
+ * callbacks send their own per-connection content.
+ *
+ * You have to send something with nonzero length to get the
+ * callback actions delivered.
+ *
+ * We take care of pre-and-post padding allocation.
+ */
+
+ if (((unsigned int)tv.tv_usec - oldus) > 50000) {
+ libwebsockets_broadcast(
+ &protocols[PROTOCOL_DUMB_INCREMENT],
+ &buf[LWS_SEND_BUFFER_PRE_PADDING], 1);
+ oldus = tv.tv_usec;
+ }
+
+ /*
+ * This example server does not fork or create a thread for
+ * websocket service, it all runs in this single loop. So,
+ * we have to give the websockets an opportunity to service
+ * "manually".
+ *
+ * If no socket is needing service, the call below returns
+ * immediately and quickly. Negative return means we are
+ * in process of closing
+ */
+
+ n = libwebsocket_service(context, 50);
+ }
+
+#else
+
+ /*
+ * This example shows how to work with the forked websocket service loop
+ */
+
+ fprintf(stderr, " Using forked service loop\n");
+
+ /*
+ * This forks the websocket service action into a subprocess so we
+ * don't have to take care about it.
+ */
+
+ n = libwebsockets_fork_service_loop(context);
+ if (n < 0) {
+ fprintf(stderr, "Unable to fork service loop %d\n", n);
+ return 1;
+ }
+
+ while (1) {
+
+ usleep(50000);
+
+ /*
+ * This broadcasts to all dumb-increment-protocol connections
+ * at 20Hz.
+ *
+ * We're just sending a character 'x', in these examples the
+ * callbacks send their own per-connection content.
+ *
+ * You have to send something with nonzero length to get the
+ * callback actions delivered.
+ *
+ * We take care of pre-and-post padding allocation.
+ */
+
+ libwebsockets_broadcast(&protocols[PROTOCOL_DUMB_INCREMENT],
+ &buf[LWS_SEND_BUFFER_PRE_PADDING], 1);
+ }
+
+#endif
+
+ libwebsocket_context_destroy(context);
+
+ return 0;
+}
--- /dev/null
+<!DOCTYPE html>
+<html lang="en">
+<head>
+ <meta charset=utf-8 />
+ <title>Minimal Websocket test app</title>
+</head>
+
+<body>
+<h3>Detected Browser: <div id=brow>...</div></h3>
+<h2>libwebsockets "dumb-increment-protocol" test applet</h2>
+The incrementing number is coming from the server and is individual for
+each connection to the server... try opening a second browser window.
+Click the button to send the server a websocket message to
+reset the number.<br><br>
+
+<table>
+ <tr>
+ <td align=center><input type=button id=offset value="Reset counter" onclick="reset();" ></td>
+ <td width=100 align=center><div id=number> </div></td>
+ <td id=wsdi_statustd align=center><div id=wsdi_status>Not initialized</div></td>
+ </tr>
+</table>
+
+<h2>libwebsockets "lws-mirror-protocol" test applet</h2>
+Use the mouse to draw on the canvas below -- all other browser windows open
+on this page see your drawing in realtime and you can see any of theirs as
+well.
+<p>
+The lws-mirror protocol doesn't interpret what is being sent to it, it just
+re-sends it to every other websocket it has a connection with using that
+protocol, including the guy who sent the packet.
+<p>libwebsockets-test-client spams circles on to this shared canvas when
+run.</p>
+<br><br>
+
+<table>
+ <tr>
+ <td>Drawing color:
+ <select id="color" onchange="update_color();">
+ <option value=#000000>Black</option>
+ <option value=#0000ff>Blue</option>
+ <option value=#20ff20>Green</option>
+ <option value=#802020>Dark Red</option>
+ </select>
+ </td>
+ <td id=wslm_statustd align=center><div id=wslm_status>Not initialized</div></td>
+ </tr>
+ <tr>
+ <td colspan=2 width=500 align=center style="background-color: #e0e0e0;"><div id=wslm_drawing> </div></td>
+ </tr>
+</table>
+
+<script>
+
+/* BrowserDetect came from http://www.quirksmode.org/js/detect.html */
+
+var BrowserDetect = {
+ init: function () {
+ this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
+ this.version = this.searchVersion(navigator.userAgent)
+ || this.searchVersion(navigator.appVersion)
+ || "an unknown version";
+ this.OS = this.searchString(this.dataOS) || "an unknown OS";
+ },
+ searchString: function (data) {
+ for (var i=0;i<data.length;i++) {
+ var dataString = data[i].string;
+ var dataProp = data[i].prop;
+ this.versionSearchString = data[i].versionSearch || data[i].identity;
+ if (dataString) {
+ if (dataString.indexOf(data[i].subString) != -1)
+ return data[i].identity;
+ }
+ else if (dataProp)
+ return data[i].identity;
+ }
+ },
+ searchVersion: function (dataString) {
+ var index = dataString.indexOf(this.versionSearchString);
+ if (index == -1) return;
+ return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
+ },
+ dataBrowser: [
+ {
+ string: navigator.userAgent,
+ subString: "Chrome",
+ identity: "Chrome"
+ },
+ { string: navigator.userAgent,
+ subString: "OmniWeb",
+ versionSearch: "OmniWeb/",
+ identity: "OmniWeb"
+ },
+ {
+ string: navigator.vendor,
+ subString: "Apple",
+ identity: "Safari",
+ versionSearch: "Version"
+ },
+ {
+ prop: window.opera,
+ identity: "Opera",
+ versionSearch: "Version"
+ },
+ {
+ string: navigator.vendor,
+ subString: "iCab",
+ identity: "iCab"
+ },
+ {
+ string: navigator.vendor,
+ subString: "KDE",
+ identity: "Konqueror"
+ },
+ {
+ string: navigator.userAgent,
+ subString: "Firefox",
+ identity: "Firefox"
+ },
+ {
+ string: navigator.vendor,
+ subString: "Camino",
+ identity: "Camino"
+ },
+ { // for newer Netscapes (6+)
+ string: navigator.userAgent,
+ subString: "Netscape",
+ identity: "Netscape"
+ },
+ {
+ string: navigator.userAgent,
+ subString: "MSIE",
+ identity: "Explorer",
+ versionSearch: "MSIE"
+ },
+ {
+ string: navigator.userAgent,
+ subString: "Gecko",
+ identity: "Mozilla",
+ versionSearch: "rv"
+ },
+ { // for older Netscapes (4-)
+ string: navigator.userAgent,
+ subString: "Mozilla",
+ identity: "Netscape",
+ versionSearch: "Mozilla"
+ }
+ ],
+ dataOS : [
+ {
+ string: navigator.platform,
+ subString: "Win",
+ identity: "Windows"
+ },
+ {
+ string: navigator.platform,
+ subString: "Mac",
+ identity: "Mac"
+ },
+ {
+ string: navigator.userAgent,
+ subString: "iPhone",
+ identity: "iPhone/iPod"
+ },
+ {
+ string: navigator.platform,
+ subString: "Linux",
+ identity: "Linux"
+ }
+ ]
+
+};
+BrowserDetect.init();
+
+document.getElementById("brow").textContent = " " + BrowserDetect.browser + " "
+ + BrowserDetect.version +" " + BrowserDetect.OS +" ";
+
+ var pos = 0;
+
+function get_appropriate_ws_url()
+{
+ var pcol;
+ var u = document.URL;
+
+ /*
+ * We open the websocket encrypted if this page came on an
+ * https:// url itself, otherwise unencrypted
+ */
+
+ if (u.substring(0, 5) == "https") {
+ pcol = "wss://";
+ u = u.substr(8);
+ } else {
+ pcol = "ws://";
+ if (u.substring(0, 4) == "http")
+ u = u.substr(7);
+ }
+
+ u = u.split('/');
+
+ return pcol + u[0];
+}
+
+
+document.getElementById("number").textContent = get_appropriate_ws_url();
+
+/* dumb increment protocol */
+
+ var socket_di;
+
+ if (BrowserDetect.browser == "Firefox" && BrowserDetect.version < 12) {
+ socket_di = new MozWebSocket(get_appropriate_ws_url(),
+ "dumb-increment-protocol");
+ } else {
+ socket_di = new WebSocket(get_appropriate_ws_url(),
+ "dumb-increment-protocol");
+ }
+
+
+ try {
+ socket_di.onopen = function() {
+ document.getElementById("wsdi_statustd").style.backgroundColor = "#40ff40";
+ document.getElementById("wsdi_status").textContent = " websocket connection opened ";
+ }
+
+ socket_di.onmessage =function got_packet(msg) {
+ document.getElementById("number").textContent = msg.data + "\n";
+ }
+
+ socket_di.onclose = function(){
+ document.getElementById("wsdi_statustd").style.backgroundColor = "#ff4040";
+ document.getElementById("wsdi_status").textContent = " websocket connection CLOSED ";
+ }
+ } catch(exception) {
+ alert('<p>Error' + exception);
+ }
+
+function reset() {
+ socket_di.send("reset\n");
+}
+
+
+/* lws-mirror protocol */
+
+ var down = 0;
+ var no_last = 1;
+ var last_x = 0, last_y = 0;
+ var ctx;
+ var socket_lm;
+ var color = "#000000";
+
+ if (BrowserDetect.browser == "Firefox" && BrowserDetect.version < 12) {
+ socket_lm = new MozWebSocket(get_appropriate_ws_url(),
+ "lws-mirror-protocol");
+ } else {
+ socket_lm = new WebSocket(get_appropriate_ws_url(),
+ "lws-mirror-protocol");
+ }
+
+
+ try {
+ socket_lm.onopen = function() {
+ document.getElementById("wslm_statustd").style.backgroundColor = "#40ff40";
+ document.getElementById("wslm_status").textContent = " websocket connection opened ";
+ }
+
+ socket_lm.onmessage =function got_packet(msg) {
+ j = msg.data.split(';');
+ f = 0;
+ while (f < j.length - 1) {
+ i = j[f].split(' ');
+ if (i[0] == 'd') {
+ ctx.strokeStyle = i[1];
+ ctx.beginPath();
+ ctx.moveTo(+(i[2]), +(i[3]));
+ ctx.lineTo(+(i[4]), +(i[5]));
+ ctx.stroke();
+ }
+ if (i[0] == 'c') {
+ ctx.strokeStyle = i[1];
+ ctx.beginPath();
+ ctx.arc(+(i[2]), +(i[3]), +(i[4]), 0, Math.PI*2, true);
+ ctx.stroke();
+ }
+
+ f++;
+ }
+ }
+
+ socket_lm.onclose = function(){
+ document.getElementById("wslm_statustd").style.backgroundColor = "#ff4040";
+ document.getElementById("wslm_status").textContent = " websocket connection CLOSED ";
+ }
+ } catch(exception) {
+ alert('<p>Error' + exception);
+ }
+
+ var canvas = document.createElement('canvas');
+ canvas.height = 300;
+ canvas.width = 480;
+ ctx = canvas.getContext("2d");
+
+ document.getElementById('wslm_drawing').appendChild(canvas);
+
+ canvas.addEventListener('mousemove', ev_mousemove, false);
+ canvas.addEventListener('mousedown', ev_mousedown, false);
+ canvas.addEventListener('mouseup', ev_mouseup, false);
+
+ offsetX = offsetY = 0;
+ element = canvas;
+ if (element.offsetParent) {
+ do {
+ offsetX += element.offsetLeft;
+ offsetY += element.offsetTop;
+ } while ((element = element.offsetParent));
+ }
+
+function update_color() {
+ color = document.getElementById("color").value;
+}
+
+function ev_mousedown (ev) {
+ down = 1;
+}
+
+function ev_mouseup(ev) {
+ down = 0;
+ no_last = 1;
+}
+
+function ev_mousemove (ev) {
+ var x, y;
+
+ if (ev.offsetX) {
+ x = ev.offsetX;
+ y = ev.offsetY;
+ } else {
+ x = ev.layerX - offsetX;
+ y = ev.layerY - offsetY;
+
+ }
+
+ if (!down)
+ return;
+ if (no_last) {
+ no_last = 0;
+ last_x = x;
+ last_y = y;
+ return;
+ }
+ socket_lm.send("d " + color + " " + last_x + " " + last_y + " " + x + ' ' + y + ';');
+
+ last_x = x;
+ last_y = y;
+}
+
+
+</script>
+
+</body>
+</html>
--- /dev/null
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--- /dev/null
+/* $NetBSD: getopt.c,v 1.16 1999/12/02 13:15:56 kleink Exp $ */\r
+\r
+/*\r
+ * Copyright (c) 1987, 1993, 1994\r
+ * The Regents of the University of California. All rights reserved.\r
+ *\r
+ * Redistribution and use in source and binary forms, with or without\r
+ * modification, are permitted provided that the following conditions\r
+ * are met:\r
+ * 1. Redistributions of source code must retain the above copyright\r
+ * notice, this list of conditions and the following disclaimer.\r
+ * 2. Redistributions in binary form must reproduce the above copyright\r
+ * notice, this list of conditions and the following disclaimer in the\r
+ * documentation and/or other materials provided with the distribution.\r
+ * 3. All advertising materials mentioning features or use of this software\r
+ * must display the following acknowledgement:\r
+ * This product includes software developed by the University of\r
+ * California, Berkeley and its contributors.\r
+ * 4. Neither the name of the University nor the names of its contributors\r
+ * may be used to endorse or promote products derived from this software\r
+ * without specific prior written permission.\r
+ *\r
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
+ * SUCH DAMAGE.\r
+ */\r
+\r
+#if 0\r
+static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";\r
+#endif\r
+\r
+#include <assert.h>\r
+#include <errno.h>\r
+#include <stdio.h>\r
+#include <string.h>\r
+\r
+#define __P(x) x\r
+#define _DIAGASSERT(x) assert(x)\r
+\r
+#ifdef __weak_alias\r
+__weak_alias(getopt,_getopt);\r
+#endif\r
+\r
+\r
+int opterr = 1, /* if error message should be printed */\r
+ optind = 1, /* index into parent argv vector */\r
+ optopt, /* character checked for validity */\r
+ optreset; /* reset getopt */\r
+char *optarg; /* argument associated with option */\r
+\r
+static char * _progname __P((char *));\r
+int getopt_internal __P((int, char * const *, const char *));\r
+\r
+static char *\r
+_progname(nargv0)\r
+ char * nargv0;\r
+{\r
+ char * tmp;\r
+\r
+ _DIAGASSERT(nargv0 != NULL);\r
+\r
+ tmp = strrchr(nargv0, '/');\r
+ if (tmp)\r
+ tmp++;\r
+ else\r
+ tmp = nargv0;\r
+ return(tmp);\r
+}\r
+\r
+#define BADCH (int)'?'\r
+#define BADARG (int)':'\r
+#define EMSG ""\r
+\r
+/*\r
+ * getopt --\r
+ * Parse argc/argv argument vector.\r
+ */\r
+int\r
+getopt(nargc, nargv, ostr)\r
+ int nargc;\r
+ char * const nargv[];\r
+ const char *ostr;\r
+{\r
+ static char *__progname = 0;\r
+ static char *place = EMSG; /* option letter processing */\r
+ char *oli; /* option letter list index */\r
+ __progname = __progname?__progname:_progname(*nargv);\r
+\r
+ _DIAGASSERT(nargv != NULL);\r
+ _DIAGASSERT(ostr != NULL);\r
+\r
+ if (optreset || !*place) { /* update scanning pointer */\r
+ optreset = 0;\r
+ if (optind >= nargc || *(place = nargv[optind]) != '-') {\r
+ place = EMSG;\r
+ return (-1);\r
+ }\r
+ if (place[1] && *++place == '-' /* found "--" */\r
+ && place[1] == '\0') {\r
+ ++optind;\r
+ place = EMSG;\r
+ return (-1);\r
+ }\r
+ } /* option letter okay? */\r
+ if ((optopt = (int)*place++) == (int)':' ||\r
+ !(oli = strchr(ostr, optopt))) {\r
+ /*\r
+ * if the user didn't specify '-' as an option,\r
+ * assume it means -1.\r
+ */\r
+ if (optopt == (int)'-')\r
+ return (-1);\r
+ if (!*place)\r
+ ++optind;\r
+ if (opterr && *ostr != ':')\r
+ (void)fprintf(stderr,\r
+ "%s: illegal option -- %c\n", __progname, optopt);\r
+ return (BADCH);\r
+ }\r
+ if (*++oli != ':') { /* don't need argument */\r
+ optarg = NULL;\r
+ if (!*place)\r
+ ++optind;\r
+ }\r
+ else { /* need an argument */\r
+ if (*place) /* no white space */\r
+ optarg = place;\r
+ else if (nargc <= ++optind) { /* no arg */\r
+ place = EMSG;\r
+ if (*ostr == ':')\r
+ return (BADARG);\r
+ if (opterr)\r
+ (void)fprintf(stderr,\r
+ "%s: option requires an argument -- %c\n",\r
+ __progname, optopt);\r
+ return (BADCH);\r
+ }\r
+ else /* white space */\r
+ optarg = nargv[optind];\r
+ place = EMSG;\r
+ ++optind;\r
+ }\r
+ return (optopt); /* dump back option letter */\r
+}\r
+\r
--- /dev/null
+#ifndef __GETOPT_H__\r
+#define __GETOPT_H__\r
+\r
+#ifdef __cplusplus\r
+extern "C" {\r
+#endif\r
+\r
+extern int opterr; /* if error message should be printed */\r
+extern int optind; /* index into parent argv vector */\r
+extern int optopt; /* character checked for validity */\r
+extern int optreset; /* reset getopt */\r
+extern char *optarg; /* argument associated with option */\r
+\r
+struct option\r
+{\r
+ const char *name;\r
+ int has_arg;\r
+ int *flag;\r
+ int val;\r
+};\r
+\r
+#define no_argument 0\r
+#define required_argument 1\r
+#define optional_argument 2\r
+\r
+int getopt(int, char**, char*);\r
+int getopt_long(int, char**, char*, struct option*, int*);\r
+\r
+#ifdef __cplusplus\r
+}\r
+#endif\r
+\r
+#endif /* __GETOPT_H__ */\r
--- /dev/null
+\r
+/*\r
+ * Copyright (c) 1987, 1993, 1994, 1996\r
+ * The Regents of the University of California. All rights reserved.\r
+ *\r
+ * Redistribution and use in source and binary forms, with or without\r
+ * modification, are permitted provided that the following conditions\r
+ * are met:\r
+ * 1. Redistributions of source code must retain the above copyright\r
+ * notice, this list of conditions and the following disclaimer.\r
+ * 2. Redistributions in binary form must reproduce the above copyright\r
+ * notice, this list of conditions and the following disclaimer in the\r
+ * documentation and/or other materials provided with the distribution.\r
+ * 3. All advertising materials mentioning features or use of this software\r
+ * must display the following acknowledgement:\r
+ * This product includes software developed by the University of\r
+ * California, Berkeley and its contributors.\r
+ * 4. Neither the name of the University nor the names of its contributors\r
+ * may be used to endorse or promote products derived from this software\r
+ * without specific prior written permission.\r
+ *\r
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
+ * SUCH DAMAGE.\r
+ */\r
+#include <assert.h>\r
+#include <errno.h>\r
+#include <stdio.h>\r
+#include <stdlib.h>\r
+#include <string.h>\r
+#include "getopt.h"\r
+\r
+extern int opterr; /* if error message should be printed */\r
+extern int optind; /* index into parent argv vector */\r
+extern int optopt; /* character checked for validity */\r
+extern int optreset; /* reset getopt */\r
+extern char *optarg; /* argument associated with option */\r
+\r
+#define __P(x) x\r
+#define _DIAGASSERT(x) assert(x)\r
+\r
+static char * __progname __P((char *));\r
+int getopt_internal __P((int, char * const *, const char *));\r
+\r
+static char *\r
+__progname(nargv0)\r
+ char * nargv0;\r
+{\r
+ char * tmp;\r
+\r
+ _DIAGASSERT(nargv0 != NULL);\r
+\r
+ tmp = strrchr(nargv0, '/');\r
+ if (tmp)\r
+ tmp++;\r
+ else\r
+ tmp = nargv0;\r
+ return(tmp);\r
+}\r
+\r
+#define BADCH (int)'?'\r
+#define BADARG (int)':'\r
+#define EMSG ""\r
+\r
+/*\r
+ * getopt --\r
+ * Parse argc/argv argument vector.\r
+ */\r
+int\r
+getopt_internal(nargc, nargv, ostr)\r
+ int nargc;\r
+ char * const *nargv;\r
+ const char *ostr;\r
+{\r
+ static char *place = EMSG; /* option letter processing */\r
+ char *oli; /* option letter list index */\r
+\r
+ _DIAGASSERT(nargv != NULL);\r
+ _DIAGASSERT(ostr != NULL);\r
+\r
+ if (optreset || !*place) { /* update scanning pointer */\r
+ optreset = 0;\r
+ if (optind >= nargc || *(place = nargv[optind]) != '-') {\r
+ place = EMSG;\r
+ return (-1);\r
+ }\r
+ if (place[1] && *++place == '-') { /* found "--" */\r
+ /* ++optind; */\r
+ place = EMSG;\r
+ return (-2);\r
+ }\r
+ } /* option letter okay? */\r
+ if ((optopt = (int)*place++) == (int)':' ||\r
+ !(oli = strchr(ostr, optopt))) {\r
+ /*\r
+ * if the user didn't specify '-' as an option,\r
+ * assume it means -1.\r
+ */\r
+ if (optopt == (int)'-')\r
+ return (-1);\r
+ if (!*place)\r
+ ++optind;\r
+ if (opterr && *ostr != ':')\r
+ (void)fprintf(stderr,\r
+ "%s: illegal option -- %c\n", __progname(nargv[0]), optopt);\r
+ return (BADCH);\r
+ }\r
+ if (*++oli != ':') { /* don't need argument */\r
+ optarg = NULL;\r
+ if (!*place)\r
+ ++optind;\r
+ } else { /* need an argument */\r
+ if (*place) /* no white space */\r
+ optarg = place;\r
+ else if (nargc <= ++optind) { /* no arg */\r
+ place = EMSG;\r
+ if ((opterr) && (*ostr != ':'))\r
+ (void)fprintf(stderr,\r
+ "%s: option requires an argument -- %c\n",\r
+ __progname(nargv[0]), optopt);\r
+ return (BADARG);\r
+ } else /* white space */\r
+ optarg = nargv[optind];\r
+ place = EMSG;\r
+ ++optind;\r
+ }\r
+ return (optopt); /* dump back option letter */\r
+}\r
+\r
+#if 0\r
+/*\r
+ * getopt --\r
+ * Parse argc/argv argument vector.\r
+ */\r
+int\r
+getopt2(nargc, nargv, ostr)\r
+ int nargc;\r
+ char * const *nargv;\r
+ const char *ostr;\r
+{\r
+ int retval;\r
+\r
+ if ((retval = getopt_internal(nargc, nargv, ostr)) == -2) {\r
+ retval = -1;\r
+ ++optind; \r
+ }\r
+ return(retval);\r
+}\r
+#endif\r
+\r
+/*\r
+ * getopt_long --\r
+ * Parse argc/argv argument vector.\r
+ */\r
+int\r
+getopt_long(nargc, nargv, options, long_options, index)\r
+ int nargc;\r
+ char ** nargv;\r
+ char * options;\r
+ struct option * long_options;\r
+ int * index;\r
+{\r
+ int retval;\r
+\r
+ _DIAGASSERT(nargv != NULL);\r
+ _DIAGASSERT(options != NULL);\r
+ _DIAGASSERT(long_options != NULL);\r
+ /* index may be NULL */\r
+\r
+ if ((retval = getopt_internal(nargc, nargv, options)) == -2) {\r
+ char *current_argv = nargv[optind++] + 2, *has_equal;\r
+ int i, current_argv_len, match = -1;\r
+\r
+ if (*current_argv == '\0') {\r
+ return(-1);\r
+ }\r
+ if ((has_equal = strchr(current_argv, '=')) != NULL) {\r
+ current_argv_len = has_equal - current_argv;\r
+ has_equal++;\r
+ } else\r
+ current_argv_len = strlen(current_argv);\r
+\r
+ for (i = 0; long_options[i].name; i++) { \r
+ if (strncmp(current_argv, long_options[i].name, current_argv_len))\r
+ continue;\r
+\r
+ if (strlen(long_options[i].name) == (unsigned)current_argv_len) { \r
+ match = i;\r
+ break;\r
+ }\r
+ if (match == -1)\r
+ match = i;\r
+ }\r
+ if (match != -1) {\r
+ if (long_options[match].has_arg == required_argument ||\r
+ long_options[match].has_arg == optional_argument) {\r
+ if (has_equal)\r
+ optarg = has_equal;\r
+ else\r
+ optarg = nargv[optind++];\r
+ }\r
+ if ((long_options[match].has_arg == required_argument)\r
+ && (optarg == NULL)) {\r
+ /*\r
+ * Missing argument, leading :\r
+ * indicates no error should be generated\r
+ */\r
+ if ((opterr) && (*options != ':'))\r
+ (void)fprintf(stderr,\r
+ "%s: option requires an argument -- %s\n",\r
+ __progname(nargv[0]), current_argv);\r
+ return (BADARG);\r
+ }\r
+ } else { /* No matching argument */\r
+ if ((opterr) && (*options != ':'))\r
+ (void)fprintf(stderr,\r
+ "%s: illegal option -- %s\n", __progname(nargv[0]), current_argv);\r
+ return (BADCH);\r
+ }\r
+ if (long_options[match].flag) {\r
+ *long_options[match].flag = long_options[match].val;\r
+ retval = 0;\r
+ } else \r
+ retval = long_options[match].val;\r
+ if (index)\r
+ *index = match;\r
+ }\r
+ return(retval);\r
+}\r
--- /dev/null
+#include < time.h >\r
+#include <windows.h> //I've ommited context line.\r
+#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS)\r
+ #define DELTA_EPOCH_IN_MICROSECS 11644473600000000Ui64\r
+#else\r
+ #define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL\r
+#endif\r
+ \r
+struct timezone \r
+{\r
+ int tz_minuteswest; /* minutes W of Greenwich */\r
+ int tz_dsttime; /* type of dst correction */\r
+};\r
+ \r
+int gettimeofday(struct timeval *tv, struct timezone *tz)\r
+{\r
+ FILETIME ft;\r
+ unsigned __int64 tmpres = 0;\r
+ static int tzflag;\r
+ \r
+ if (NULL != tv)\r
+ {\r
+ GetSystemTimeAsFileTime(&ft);\r
+ \r
+ tmpres |= ft.dwHighDateTime;\r
+ tmpres <<= 32;\r
+ tmpres |= ft.dwLowDateTime;\r
+ \r
+ /*converting file time to unix epoch*/\r
+ tmpres -= DELTA_EPOCH_IN_MICROSECS; \r
+ tmpres /= 10; /*convert into microseconds*/\r
+ tv->tv_sec = (long)(tmpres / 1000000UL);\r
+ tv->tv_usec = (long)(tmpres % 1000000UL);\r
+ }\r
+ \r
+ if (NULL != tz)\r
+ {\r
+ if (!tzflag)\r
+ {\r
+ _tzset();\r
+ tzflag++;\r
+ }\r
+ tz->tz_minuteswest = _timezone / 60;\r
+ tz->tz_dsttime = _daylight;\r
+ }\r
+ \r
+ return 0;\r
+}\r
--- /dev/null
+#ifndef _GET_TIME_OF_DAY_H\r
+#define _GET_TIME_OF_DAY_H\r
+\r
+#ifdef __MINGW64__\r
+#else\r
+#ifdef __MINGW32__\r
+#else\r
+#include < time.h >\r
+#endif\r
+#endif\r
+\r
+#include <windows.h> //I've ommited context line.\r
+#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS)\r
+ #define DELTA_EPOCH_IN_MICROSECS 11644473600000000Ui64\r
+#else\r
+ #define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL\r
+#endif\r
+ \r
+struct timezone \r
+{\r
+ int tz_minuteswest; /* minutes W of Greenwich */\r
+ int tz_dsttime; /* type of dst correction */\r
+};\r
+ \r
+int gettimeofday(struct timeval *tv, struct timezone *tz);\r
+\r
+\r
+#endif\r
--- /dev/null
+// Left blank for win32
\ No newline at end of file
--- /dev/null
+// left blank
\ No newline at end of file
--- /dev/null
+#define FD_SETSIZE 256
+
+#ifdef __MINGW32__
+#include <winsock2.h>
+#else
+#ifdef __MINGW64__
+#include <winsock2.h>
+#else
+#include <WinSock2.h>
+#endif
+#endif
+
+#include <stdlib.h>
+#include <errno.h>
+#include "websock-w32.h"
+
+PFNWSAPOLL poll = NULL;
+
+INT WSAAPI emulated_poll(LPWSAPOLLFD fdarray, ULONG nfds, INT timeout)
+{
+ fd_set readfds;
+ fd_set writefds;
+ struct timeval tv;
+ struct timeval *ptv = &tv;
+ SOCKET max_socket = 0;
+ ULONG n = 0;
+ int waiting;
+ int pending = 0;
+ WSAPOLLFD * poll_fd = fdarray;
+
+ if (NULL == fdarray) {
+ errno = EFAULT;
+ return -1;
+ }
+
+ FD_ZERO(&readfds);
+ FD_ZERO(&writefds);
+
+ tv.tv_sec = timeout / 1000;
+ tv.tv_usec = (timeout % 1000) * 1000;
+
+ if (timeout < 0)
+ ptv = NULL;
+
+ while (n < nfds) {
+
+ poll_fd->revents = 0;
+
+ if (poll_fd->fd < 0 || !poll_fd->events)
+ goto skip1;
+
+ if (max_socket < poll_fd->fd)
+ max_socket = poll_fd->fd;
+
+ if (poll_fd->events & POLLIN)
+ FD_SET(poll_fd->fd, &readfds);
+
+ if (poll_fd->events & POLLOUT)
+ FD_SET(poll_fd->fd, &writefds);
+skip1:
+ poll_fd++;
+ n++;
+ }
+
+ waiting = select((int)max_socket + 1, &readfds, &writefds, NULL, ptv);
+
+ if (waiting <= 0)
+ return waiting;
+
+ poll_fd = fdarray;
+
+ while (waiting && nfds--) {
+
+ if (!poll_fd->events)
+ goto skip2;
+
+ if (poll_fd->fd <= 0) {
+ poll_fd->revents = POLLNVAL;
+ goto skip2;
+ }
+
+ if (FD_ISSET(poll_fd->fd, &readfds)) {
+
+ /* defer POLLHUP / error detect to false read attempt */
+
+ poll_fd->revents |= POLLIN;
+ waiting--;
+ }
+
+ if (FD_ISSET(poll_fd->fd, &writefds)) {
+
+ poll_fd->revents |= poll_fd->events & POLLOUT;
+ waiting--;
+ }
+
+ if (poll_fd->revents)
+ pending++;
+
+skip2:
+ poll_fd++;
+ }
+
+ return pending;
+}
--- /dev/null
+#ifndef __WEB_SOCK_W32_H__\r
+#define __WEB_SOCK_W32_H__\r
+\r
+// Windows uses _DEBUG and NDEBUG\r
+#ifdef _DEBUG\r
+#undef DEBUG\r
+#define DEBUG 1\r
+#endif\r
+\r
+#pragma warning(disable : 4996)\r
+\r
+#define bzero(b,len) (memset((b), '\0', (len)), (void) 0)\r
+\r
+#define MSG_NOSIGNAL 0\r
+#define SHUT_RDWR SD_BOTH\r
+\r
+#define SOL_TCP IPPROTO_TCP\r
+\r
+#define random rand\r
+#define usleep _sleep\r
+\r
+#ifdef __MINGW64__ \r
+#define DEF_POLL_STUFF\r
+#endif\r
+#ifdef __MINGW32__ \r
+#define DEF_POLL_STUFF\r
+#endif\r
+\r
+#ifdef DEF_POLL_STUFF\r
+\r
+#include <winsock2.h>\r
+\r
+typedef struct pollfd {\r
+ SOCKET fd;\r
+ short events;\r
+ short revents;\r
+} WSAPOLLFD, *PWSAPOLLFD, *LPWSAPOLLFD;\r
+\r
+#define POLLIN 0x0001 /* any readable data available */\r
+#define POLLOUT 0x0004 /* file descriptor is writeable */\r
+#define POLLERR 0x0008 /* some poll error occurred */\r
+#define POLLHUP 0x0010 /* file descriptor was "hung up" */\r
+#define POLLNVAL 0x0020 /* requested events "invalid" */\r
+\r
+#endif\r
+\r
+typedef INT (WSAAPI *PFNWSAPOLL)(LPWSAPOLLFD fdarray, ULONG nfds, INT timeout);\r
+extern PFNWSAPOLL poll;\r
+\r
+extern INT WSAAPI emulated_poll(LPWSAPOLLFD fdarray, ULONG nfds, INT timeout);\r
+\r
+/* override configure because we are not using Makefiles */\r
+\r
+#define LWS_NO_FORK\r
+\r
+/* windows can't cope with this idea, needs assets in cwd */\r
+\r
+#ifdef INSTALL_DATADIR\r
+#undef INSTALL_DATADIR\r
+#endif\r
+\r
+#define INSTALL_DATADIR "."\r
+\r
+#endif\r
--- /dev/null
+\r
+Microsoft Visual Studio Solution File, Format Version 11.00\r
+# Visual C++ Express 2010\r
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "server", "server\server.vcxproj", "{E585B64F-9365-4C58-9EF8-56393EB27F8B}"\r
+ ProjectSection(ProjectDependencies) = postProject\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F} = {332BF17E-FD30-4363-975A-AA731A827B4F}\r
+ EndProjectSection\r
+EndProject\r
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libwebsocketswin32", "libwebsocketswin32\libwebsocketswin32.vcxproj", "{332BF17E-FD30-4363-975A-AA731A827B4F}"\r
+ ProjectSection(ProjectDependencies) = postProject\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525} = {4156FC56-8443-2973-4FE2-A0BB2C621525}\r
+ EndProjectSection\r
+EndProject\r
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "client", "client\client.vcxproj", "{6265650C-4799-451C-A687-94DE48759A8B}"\r
+EndProject\r
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ZLib", "zlib\ZLib.vcxproj", "{4156FC56-8443-2973-4FE2-A0BB2C621525}"\r
+EndProject\r
+Global\r
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution\r
+ Debug static|Win32 = Debug static|Win32\r
+ Debug static|x64 = Debug static|x64\r
+ Debug|Win32 = Debug|Win32\r
+ Debug|x64 = Debug|x64\r
+ Release DLL|Win32 = Release DLL|Win32\r
+ Release DLL|x64 = Release DLL|x64\r
+ Release static|Win32 = Release static|Win32\r
+ Release static|x64 = Release static|x64\r
+ Release|Win32 = Release|Win32\r
+ Release|x64 = Release|x64\r
+ EndGlobalSection\r
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Debug static|Win32.ActiveCfg = Debug static|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Debug static|Win32.Build.0 = Debug static|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Debug static|x64.ActiveCfg = Debug static|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Debug|Win32.ActiveCfg = Debug|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Debug|Win32.Build.0 = Debug|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Debug|x64.ActiveCfg = Debug|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Release DLL|Win32.ActiveCfg = Release DLL|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Release DLL|Win32.Build.0 = Release DLL|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Release DLL|x64.ActiveCfg = Release DLL|x64\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Release DLL|x64.Build.0 = Release DLL|x64\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Release static|Win32.ActiveCfg = Release static|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Release static|Win32.Build.0 = Release static|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Release static|x64.ActiveCfg = Release static|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Release|Win32.ActiveCfg = Release|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Release|Win32.Build.0 = Release|Win32\r
+ {332BF17E-FD30-4363-975A-AA731A827B4F}.Release|x64.ActiveCfg = Release|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Debug static|Win32.ActiveCfg = Debug static|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Debug static|Win32.Build.0 = Debug static|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Debug static|x64.ActiveCfg = Debug static|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Debug|Win32.ActiveCfg = Debug|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Debug|Win32.Build.0 = Debug|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Debug|x64.ActiveCfg = Debug|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Release DLL|Win32.ActiveCfg = Release DLL|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Release DLL|Win32.Build.0 = Release DLL|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Release DLL|x64.ActiveCfg = Release DLL|x64\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Release DLL|x64.Build.0 = Release DLL|x64\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Release static|Win32.ActiveCfg = Release static|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Release static|Win32.Build.0 = Release static|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Release static|x64.ActiveCfg = Release static|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Release|Win32.ActiveCfg = Release|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Release|Win32.Build.0 = Release|Win32\r
+ {4156FC56-8443-2973-4FE2-A0BB2C621525}.Release|x64.ActiveCfg = Release|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Debug static|Win32.ActiveCfg = Debug static|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Debug static|Win32.Build.0 = Debug static|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Debug static|x64.ActiveCfg = Debug static|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Debug|Win32.ActiveCfg = Debug|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Debug|Win32.Build.0 = Debug|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Debug|x64.ActiveCfg = Debug|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Release DLL|Win32.ActiveCfg = Release DLL|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Release DLL|Win32.Build.0 = Release DLL|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Release DLL|x64.ActiveCfg = Release DLL|x64\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Release DLL|x64.Build.0 = Release DLL|x64\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Release static|Win32.ActiveCfg = Release static|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Release static|Win32.Build.0 = Release static|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Release static|x64.ActiveCfg = Release static|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Release|Win32.ActiveCfg = Release|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Release|Win32.Build.0 = Release|Win32\r
+ {6265650C-4799-451C-A687-94DE48759A8B}.Release|x64.ActiveCfg = Release|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Debug static|Win32.ActiveCfg = Debug static|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Debug static|Win32.Build.0 = Debug static|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Debug static|x64.ActiveCfg = Debug static|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Debug|Win32.ActiveCfg = Debug|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Debug|Win32.Build.0 = Debug|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Debug|x64.ActiveCfg = Debug|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Release DLL|Win32.ActiveCfg = Release DLL|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Release DLL|Win32.Build.0 = Release DLL|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Release DLL|x64.ActiveCfg = Release DLL|x64\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Release DLL|x64.Build.0 = Release DLL|x64\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Release static|Win32.ActiveCfg = Release static|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Release static|Win32.Build.0 = Release static|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Release static|x64.ActiveCfg = Release static|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Release|Win32.ActiveCfg = Release|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Release|Win32.Build.0 = Release|Win32\r
+ {E585B64F-9365-4C58-9EF8-56393EB27F8B}.Release|x64.ActiveCfg = Release|Win32\r
+ EndGlobalSection\r
+ GlobalSection(SolutionProperties) = preSolution\r
+ HideSolutionNode = FALSE\r
+ EndGlobalSection\r
+EndGlobal\r
--- /dev/null
+<?xml version="1.0" encoding="utf-8"?>\r
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">\r
+ <ItemGroup Label="ProjectConfigurations">\r
+ <ProjectConfiguration Include="Debug static|Win32">\r
+ <Configuration>Debug static</Configuration>\r
+ <Platform>Win32</Platform>\r
+ </ProjectConfiguration>\r
+ <ProjectConfiguration Include="Debug|Win32">\r
+ <Configuration>Debug</Configuration>\r
+ <Platform>Win32</Platform>\r
+ </ProjectConfiguration>\r
+ <ProjectConfiguration Include="Debug|x64">\r
+ <Configuration>Debug</Configuration>\r
+ <Platform>x64</Platform>\r
+ </ProjectConfiguration>\r
+ <ProjectConfiguration Include="Release DLL|Win32">\r
+ <Configuration>Release DLL</Configuration>\r
+ <Platform>Win32</Platform>\r
+ </ProjectConfiguration>\r
+ <ProjectConfiguration Include="Release DLL|x64">\r
+ <Configuration>Release DLL</Configuration>\r
+ <Platform>x64</Platform>\r
+ </ProjectConfiguration>\r
+ <ProjectConfiguration Include="Release static|Win32">\r
+ <Configuration>Release static</Configuration>\r
+ <Platform>Win32</Platform>\r
+ </ProjectConfiguration>\r
+ <ProjectConfiguration Include="Release|Win32">\r
+ <Configuration>Release</Configuration>\r
+ <Platform>Win32</Platform>\r
+ </ProjectConfiguration>\r
+ <ProjectConfiguration Include="Release|x64">\r
+ <Configuration>Release</Configuration>\r
+ <Platform>x64</Platform>\r
+ </ProjectConfiguration>\r
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+/* adler32.c -- compute the Adler-32 checksum of a data stream\r
+ * Copyright (C) 1995-2007 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+#include "zutil.h"\r
+\r
+#define local static\r
+\r
+local uLong adler32_combine_(uLong adler1, uLong adler2, z_off64_t len2);\r
+\r
+#define BASE 65521UL /* largest prime smaller than 65536 */\r
+#define NMAX 5552\r
+/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */\r
+\r
+#define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;}\r
+#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);\r
+#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);\r
+#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);\r
+#define DO16(buf) DO8(buf,0); DO8(buf,8);\r
+\r
+/* use NO_DIVIDE if your processor does not do division in hardware */\r
+#ifdef NO_DIVIDE\r
+# define MOD(a) \\r
+ do { \\r
+ if (a >= (BASE << 16)) a -= (BASE << 16); \\r
+ if (a >= (BASE << 15)) a -= (BASE << 15); \\r
+ if (a >= (BASE << 14)) a -= (BASE << 14); \\r
+ if (a >= (BASE << 13)) a -= (BASE << 13); \\r
+ if (a >= (BASE << 12)) a -= (BASE << 12); \\r
+ if (a >= (BASE << 11)) a -= (BASE << 11); \\r
+ if (a >= (BASE << 10)) a -= (BASE << 10); \\r
+ if (a >= (BASE << 9)) a -= (BASE << 9); \\r
+ if (a >= (BASE << 8)) a -= (BASE << 8); \\r
+ if (a >= (BASE << 7)) a -= (BASE << 7); \\r
+ if (a >= (BASE << 6)) a -= (BASE << 6); \\r
+ if (a >= (BASE << 5)) a -= (BASE << 5); \\r
+ if (a >= (BASE << 4)) a -= (BASE << 4); \\r
+ if (a >= (BASE << 3)) a -= (BASE << 3); \\r
+ if (a >= (BASE << 2)) a -= (BASE << 2); \\r
+ if (a >= (BASE << 1)) a -= (BASE << 1); \\r
+ if (a >= BASE) a -= BASE; \\r
+ } while (0)\r
+# define MOD4(a) \\r
+ do { \\r
+ if (a >= (BASE << 4)) a -= (BASE << 4); \\r
+ if (a >= (BASE << 3)) a -= (BASE << 3); \\r
+ if (a >= (BASE << 2)) a -= (BASE << 2); \\r
+ if (a >= (BASE << 1)) a -= (BASE << 1); \\r
+ if (a >= BASE) a -= BASE; \\r
+ } while (0)\r
+#else\r
+# define MOD(a) a %= BASE\r
+# define MOD4(a) a %= BASE\r
+#endif\r
+\r
+/* ========================================================================= */\r
+uLong ZEXPORT adler32(adler, buf, len)\r
+ uLong adler;\r
+ const Bytef *buf;\r
+ uInt len;\r
+{\r
+ unsigned long sum2;\r
+ unsigned n;\r
+\r
+ /* split Adler-32 into component sums */\r
+ sum2 = (adler >> 16) & 0xffff;\r
+ adler &= 0xffff;\r
+\r
+ /* in case user likes doing a byte at a time, keep it fast */\r
+ if (len == 1) {\r
+ adler += buf[0];\r
+ if (adler >= BASE)\r
+ adler -= BASE;\r
+ sum2 += adler;\r
+ if (sum2 >= BASE)\r
+ sum2 -= BASE;\r
+ return adler | (sum2 << 16);\r
+ }\r
+\r
+ /* initial Adler-32 value (deferred check for len == 1 speed) */\r
+ if (buf == Z_NULL)\r
+ return 1L;\r
+\r
+ /* in case short lengths are provided, keep it somewhat fast */\r
+ if (len < 16) {\r
+ while (len--) {\r
+ adler += *buf++;\r
+ sum2 += adler;\r
+ }\r
+ if (adler >= BASE)\r
+ adler -= BASE;\r
+ MOD4(sum2); /* only added so many BASE's */\r
+ return adler | (sum2 << 16);\r
+ }\r
+\r
+ /* do length NMAX blocks -- requires just one modulo operation */\r
+ while (len >= NMAX) {\r
+ len -= NMAX;\r
+ n = NMAX / 16; /* NMAX is divisible by 16 */\r
+ do {\r
+ DO16(buf); /* 16 sums unrolled */\r
+ buf += 16;\r
+ } while (--n);\r
+ MOD(adler);\r
+ MOD(sum2);\r
+ }\r
+\r
+ /* do remaining bytes (less than NMAX, still just one modulo) */\r
+ if (len) { /* avoid modulos if none remaining */\r
+ while (len >= 16) {\r
+ len -= 16;\r
+ DO16(buf);\r
+ buf += 16;\r
+ }\r
+ while (len--) {\r
+ adler += *buf++;\r
+ sum2 += adler;\r
+ }\r
+ MOD(adler);\r
+ MOD(sum2);\r
+ }\r
+\r
+ /* return recombined sums */\r
+ return adler | (sum2 << 16);\r
+}\r
+\r
+/* ========================================================================= */\r
+local uLong adler32_combine_(adler1, adler2, len2)\r
+ uLong adler1;\r
+ uLong adler2;\r
+ z_off64_t len2;\r
+{\r
+ unsigned long sum1;\r
+ unsigned long sum2;\r
+ unsigned rem;\r
+\r
+ /* the derivation of this formula is left as an exercise for the reader */\r
+ rem = (unsigned)(len2 % BASE);\r
+ sum1 = adler1 & 0xffff;\r
+ sum2 = rem * sum1;\r
+ MOD(sum2);\r
+ sum1 += (adler2 & 0xffff) + BASE - 1;\r
+ sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;\r
+ if (sum1 >= BASE) sum1 -= BASE;\r
+ if (sum1 >= BASE) sum1 -= BASE;\r
+ if (sum2 >= (BASE << 1)) sum2 -= (BASE << 1);\r
+ if (sum2 >= BASE) sum2 -= BASE;\r
+ return sum1 | (sum2 << 16);\r
+}\r
+\r
+/* ========================================================================= */\r
+uLong ZEXPORT adler32_combine(adler1, adler2, len2)\r
+ uLong adler1;\r
+ uLong adler2;\r
+ z_off_t len2;\r
+{\r
+ return adler32_combine_(adler1, adler2, len2);\r
+}\r
+\r
+uLong ZEXPORT adler32_combine64(adler1, adler2, len2)\r
+ uLong adler1;\r
+ uLong adler2;\r
+ z_off64_t len2;\r
+{\r
+ return adler32_combine_(adler1, adler2, len2);\r
+}\r
--- /dev/null
+/* compress.c -- compress a memory buffer\r
+ * Copyright (C) 1995-2005 Jean-loup Gailly.\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+#define ZLIB_INTERNAL\r
+#include "zlib.h"\r
+\r
+/* ===========================================================================\r
+ Compresses the source buffer into the destination buffer. The level\r
+ parameter has the same meaning as in deflateInit. sourceLen is the byte\r
+ length of the source buffer. Upon entry, destLen is the total size of the\r
+ destination buffer, which must be at least 0.1% larger than sourceLen plus\r
+ 12 bytes. Upon exit, destLen is the actual size of the compressed buffer.\r
+\r
+ compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough\r
+ memory, Z_BUF_ERROR if there was not enough room in the output buffer,\r
+ Z_STREAM_ERROR if the level parameter is invalid.\r
+*/\r
+int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)\r
+ Bytef *dest;\r
+ uLongf *destLen;\r
+ const Bytef *source;\r
+ uLong sourceLen;\r
+ int level;\r
+{\r
+ z_stream stream;\r
+ int err;\r
+\r
+ stream.next_in = (Bytef*)source;\r
+ stream.avail_in = (uInt)sourceLen;\r
+#ifdef MAXSEG_64K\r
+ /* Check for source > 64K on 16-bit machine: */\r
+ if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;\r
+#endif\r
+ stream.next_out = dest;\r
+ stream.avail_out = (uInt)*destLen;\r
+ if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;\r
+\r
+ stream.zalloc = (alloc_func)0;\r
+ stream.zfree = (free_func)0;\r
+ stream.opaque = (voidpf)0;\r
+\r
+ err = deflateInit(&stream, level);\r
+ if (err != Z_OK) return err;\r
+\r
+ err = deflate(&stream, Z_FINISH);\r
+ if (err != Z_STREAM_END) {\r
+ deflateEnd(&stream);\r
+ return err == Z_OK ? Z_BUF_ERROR : err;\r
+ }\r
+ *destLen = stream.total_out;\r
+\r
+ err = deflateEnd(&stream);\r
+ return err;\r
+}\r
+\r
+/* ===========================================================================\r
+ */\r
+int ZEXPORT compress (dest, destLen, source, sourceLen)\r
+ Bytef *dest;\r
+ uLongf *destLen;\r
+ const Bytef *source;\r
+ uLong sourceLen;\r
+{\r
+ return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);\r
+}\r
+\r
+/* ===========================================================================\r
+ If the default memLevel or windowBits for deflateInit() is changed, then\r
+ this function needs to be updated.\r
+ */\r
+uLong ZEXPORT compressBound (sourceLen)\r
+ uLong sourceLen;\r
+{\r
+ return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +\r
+ (sourceLen >> 25) + 13;\r
+}\r
--- /dev/null
+/* crc32.c -- compute the CRC-32 of a data stream\r
+ * Copyright (C) 1995-2006, 2010 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ *\r
+ * Thanks to Rodney Brown <rbrown64@csc.com.au> for his contribution of faster\r
+ * CRC methods: exclusive-oring 32 bits of data at a time, and pre-computing\r
+ * tables for updating the shift register in one step with three exclusive-ors\r
+ * instead of four steps with four exclusive-ors. This results in about a\r
+ * factor of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3.\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+/*\r
+ Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore\r
+ protection on the static variables used to control the first-use generation\r
+ of the crc tables. Therefore, if you #define DYNAMIC_CRC_TABLE, you should\r
+ first call get_crc_table() to initialize the tables before allowing more than\r
+ one thread to use crc32().\r
+ */\r
+\r
+#ifdef MAKECRCH\r
+# include <stdio.h>\r
+# ifndef DYNAMIC_CRC_TABLE\r
+# define DYNAMIC_CRC_TABLE\r
+# endif /* !DYNAMIC_CRC_TABLE */\r
+#endif /* MAKECRCH */\r
+\r
+#include "zutil.h" /* for STDC and FAR definitions */\r
+\r
+#define local static\r
+\r
+/* Find a four-byte integer type for crc32_little() and crc32_big(). */\r
+#ifndef NOBYFOUR\r
+# ifdef STDC /* need ANSI C limits.h to determine sizes */\r
+# include <limits.h>\r
+# define BYFOUR\r
+# if (UINT_MAX == 0xffffffffUL)\r
+ typedef unsigned int u4;\r
+# else\r
+# if (ULONG_MAX == 0xffffffffUL)\r
+ typedef unsigned long u4;\r
+# else\r
+# if (USHRT_MAX == 0xffffffffUL)\r
+ typedef unsigned short u4;\r
+# else\r
+# undef BYFOUR /* can't find a four-byte integer type! */\r
+# endif\r
+# endif\r
+# endif\r
+# endif /* STDC */\r
+#endif /* !NOBYFOUR */\r
+\r
+/* Definitions for doing the crc four data bytes at a time. */\r
+#ifdef BYFOUR\r
+# define REV(w) ((((w)>>24)&0xff)+(((w)>>8)&0xff00)+ \\r
+ (((w)&0xff00)<<8)+(((w)&0xff)<<24))\r
+ local unsigned long crc32_little OF((unsigned long,\r
+ const unsigned char FAR *, unsigned));\r
+ local unsigned long crc32_big OF((unsigned long,\r
+ const unsigned char FAR *, unsigned));\r
+# define TBLS 8\r
+#else\r
+# define TBLS 1\r
+#endif /* BYFOUR */\r
+\r
+/* Local functions for crc concatenation */\r
+local unsigned long gf2_matrix_times OF((unsigned long *mat,\r
+ unsigned long vec));\r
+local void gf2_matrix_square OF((unsigned long *square, unsigned long *mat));\r
+local uLong crc32_combine_(uLong crc1, uLong crc2, z_off64_t len2);\r
+\r
+\r
+#ifdef DYNAMIC_CRC_TABLE\r
+\r
+local volatile int crc_table_empty = 1;\r
+local unsigned long FAR crc_table[TBLS][256];\r
+local void make_crc_table OF((void));\r
+#ifdef MAKECRCH\r
+ local void write_table OF((FILE *, const unsigned long FAR *));\r
+#endif /* MAKECRCH */\r
+/*\r
+ Generate tables for a byte-wise 32-bit CRC calculation on the polynomial:\r
+ x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1.\r
+\r
+ Polynomials over GF(2) are represented in binary, one bit per coefficient,\r
+ with the lowest powers in the most significant bit. Then adding polynomials\r
+ is just exclusive-or, and multiplying a polynomial by x is a right shift by\r
+ one. If we call the above polynomial p, and represent a byte as the\r
+ polynomial q, also with the lowest power in the most significant bit (so the\r
+ byte 0xb1 is the polynomial x^7+x^3+x+1), then the CRC is (q*x^32) mod p,\r
+ where a mod b means the remainder after dividing a by b.\r
+\r
+ This calculation is done using the shift-register method of multiplying and\r
+ taking the remainder. The register is initialized to zero, and for each\r
+ incoming bit, x^32 is added mod p to the register if the bit is a one (where\r
+ x^32 mod p is p+x^32 = x^26+...+1), and the register is multiplied mod p by\r
+ x (which is shifting right by one and adding x^32 mod p if the bit shifted\r
+ out is a one). We start with the highest power (least significant bit) of\r
+ q and repeat for all eight bits of q.\r
+\r
+ The first table is simply the CRC of all possible eight bit values. This is\r
+ all the information needed to generate CRCs on data a byte at a time for all\r
+ combinations of CRC register values and incoming bytes. The remaining tables\r
+ allow for word-at-a-time CRC calculation for both big-endian and little-\r
+ endian machines, where a word is four bytes.\r
+*/\r
+local void make_crc_table()\r
+{\r
+ unsigned long c;\r
+ int n, k;\r
+ unsigned long poly; /* polynomial exclusive-or pattern */\r
+ /* terms of polynomial defining this crc (except x^32): */\r
+ static volatile int first = 1; /* flag to limit concurrent making */\r
+ static const unsigned char p[] = {0,1,2,4,5,7,8,10,11,12,16,22,23,26};\r
+\r
+ /* See if another task is already doing this (not thread-safe, but better\r
+ than nothing -- significantly reduces duration of vulnerability in\r
+ case the advice about DYNAMIC_CRC_TABLE is ignored) */\r
+ if (first) {\r
+ first = 0;\r
+\r
+ /* make exclusive-or pattern from polynomial (0xedb88320UL) */\r
+ poly = 0UL;\r
+ for (n = 0; n < sizeof(p)/sizeof(unsigned char); n++)\r
+ poly |= 1UL << (31 - p[n]);\r
+\r
+ /* generate a crc for every 8-bit value */\r
+ for (n = 0; n < 256; n++) {\r
+ c = (unsigned long)n;\r
+ for (k = 0; k < 8; k++)\r
+ c = c & 1 ? poly ^ (c >> 1) : c >> 1;\r
+ crc_table[0][n] = c;\r
+ }\r
+\r
+#ifdef BYFOUR\r
+ /* generate crc for each value followed by one, two, and three zeros,\r
+ and then the byte reversal of those as well as the first table */\r
+ for (n = 0; n < 256; n++) {\r
+ c = crc_table[0][n];\r
+ crc_table[4][n] = REV(c);\r
+ for (k = 1; k < 4; k++) {\r
+ c = crc_table[0][c & 0xff] ^ (c >> 8);\r
+ crc_table[k][n] = c;\r
+ crc_table[k + 4][n] = REV(c);\r
+ }\r
+ }\r
+#endif /* BYFOUR */\r
+\r
+ crc_table_empty = 0;\r
+ }\r
+ else { /* not first */\r
+ /* wait for the other guy to finish (not efficient, but rare) */\r
+ while (crc_table_empty)\r
+ ;\r
+ }\r
+\r
+#ifdef MAKECRCH\r
+ /* write out CRC tables to crc32.h */\r
+ {\r
+ FILE *out;\r
+\r
+ out = fopen("crc32.h", "w");\r
+ if (out == NULL) return;\r
+ fprintf(out, "/* crc32.h -- tables for rapid CRC calculation\n");\r
+ fprintf(out, " * Generated automatically by crc32.c\n */\n\n");\r
+ fprintf(out, "local const unsigned long FAR ");\r
+ fprintf(out, "crc_table[TBLS][256] =\n{\n {\n");\r
+ write_table(out, crc_table[0]);\r
+# ifdef BYFOUR\r
+ fprintf(out, "#ifdef BYFOUR\n");\r
+ for (k = 1; k < 8; k++) {\r
+ fprintf(out, " },\n {\n");\r
+ write_table(out, crc_table[k]);\r
+ }\r
+ fprintf(out, "#endif\n");\r
+# endif /* BYFOUR */\r
+ fprintf(out, " }\n};\n");\r
+ fclose(out);\r
+ }\r
+#endif /* MAKECRCH */\r
+}\r
+\r
+#ifdef MAKECRCH\r
+local void write_table(out, table)\r
+ FILE *out;\r
+ const unsigned long FAR *table;\r
+{\r
+ int n;\r
+\r
+ for (n = 0; n < 256; n++)\r
+ fprintf(out, "%s0x%08lxUL%s", n % 5 ? "" : " ", table[n],\r
+ n == 255 ? "\n" : (n % 5 == 4 ? ",\n" : ", "));\r
+}\r
+#endif /* MAKECRCH */\r
+\r
+#else /* !DYNAMIC_CRC_TABLE */\r
+/* ========================================================================\r
+ * Tables of CRC-32s of all single-byte values, made by make_crc_table().\r
+ */\r
+#include "crc32.h"\r
+#endif /* DYNAMIC_CRC_TABLE */\r
+\r
+/* =========================================================================\r
+ * This function can be used by asm versions of crc32()\r
+ */\r
+const unsigned long FAR * ZEXPORT get_crc_table()\r
+{\r
+#ifdef DYNAMIC_CRC_TABLE\r
+ if (crc_table_empty)\r
+ make_crc_table();\r
+#endif /* DYNAMIC_CRC_TABLE */\r
+ return (const unsigned long FAR *)crc_table;\r
+}\r
+\r
+/* ========================================================================= */\r
+#define DO1 crc = crc_table[0][((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8)\r
+#define DO8 DO1; DO1; DO1; DO1; DO1; DO1; DO1; DO1\r
+\r
+/* ========================================================================= */\r
+unsigned long ZEXPORT crc32(crc, buf, len)\r
+ unsigned long crc;\r
+ const unsigned char FAR *buf;\r
+ uInt len;\r
+{\r
+ if (buf == Z_NULL) return 0UL;\r
+\r
+#ifdef DYNAMIC_CRC_TABLE\r
+ if (crc_table_empty)\r
+ make_crc_table();\r
+#endif /* DYNAMIC_CRC_TABLE */\r
+\r
+#ifdef BYFOUR\r
+ if (sizeof(void *) == sizeof(ptrdiff_t)) {\r
+ u4 endian;\r
+\r
+ endian = 1;\r
+ if (*((unsigned char *)(&endian)))\r
+ return crc32_little(crc, buf, len);\r
+ else\r
+ return crc32_big(crc, buf, len);\r
+ }\r
+#endif /* BYFOUR */\r
+ crc = crc ^ 0xffffffffUL;\r
+ while (len >= 8) {\r
+ DO8;\r
+ len -= 8;\r
+ }\r
+ if (len) do {\r
+ DO1;\r
+ } while (--len);\r
+ return crc ^ 0xffffffffUL;\r
+}\r
+\r
+#ifdef BYFOUR\r
+\r
+/* ========================================================================= */\r
+#define DOLIT4 c ^= *buf4++; \\r
+ c = crc_table[3][c & 0xff] ^ crc_table[2][(c >> 8) & 0xff] ^ \\r
+ crc_table[1][(c >> 16) & 0xff] ^ crc_table[0][c >> 24]\r
+#define DOLIT32 DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4\r
+\r
+/* ========================================================================= */\r
+local unsigned long crc32_little(crc, buf, len)\r
+ unsigned long crc;\r
+ const unsigned char FAR *buf;\r
+ unsigned len;\r
+{\r
+ register u4 c;\r
+ register const u4 FAR *buf4;\r
+\r
+ c = (u4)crc;\r
+ c = ~c;\r
+ while (len && ((ptrdiff_t)buf & 3)) {\r
+ c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);\r
+ len--;\r
+ }\r
+\r
+ buf4 = (const u4 FAR *)(const void FAR *)buf;\r
+ while (len >= 32) {\r
+ DOLIT32;\r
+ len -= 32;\r
+ }\r
+ while (len >= 4) {\r
+ DOLIT4;\r
+ len -= 4;\r
+ }\r
+ buf = (const unsigned char FAR *)buf4;\r
+\r
+ if (len) do {\r
+ c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);\r
+ } while (--len);\r
+ c = ~c;\r
+ return (unsigned long)c;\r
+}\r
+\r
+/* ========================================================================= */\r
+#define DOBIG4 c ^= *++buf4; \\r
+ c = crc_table[4][c & 0xff] ^ crc_table[5][(c >> 8) & 0xff] ^ \\r
+ crc_table[6][(c >> 16) & 0xff] ^ crc_table[7][c >> 24]\r
+#define DOBIG32 DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4\r
+\r
+/* ========================================================================= */\r
+local unsigned long crc32_big(crc, buf, len)\r
+ unsigned long crc;\r
+ const unsigned char FAR *buf;\r
+ unsigned len;\r
+{\r
+ register u4 c;\r
+ register const u4 FAR *buf4;\r
+\r
+ c = REV((u4)crc);\r
+ c = ~c;\r
+ while (len && ((ptrdiff_t)buf & 3)) {\r
+ c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);\r
+ len--;\r
+ }\r
+\r
+ buf4 = (const u4 FAR *)(const void FAR *)buf;\r
+ buf4--;\r
+ while (len >= 32) {\r
+ DOBIG32;\r
+ len -= 32;\r
+ }\r
+ while (len >= 4) {\r
+ DOBIG4;\r
+ len -= 4;\r
+ }\r
+ buf4++;\r
+ buf = (const unsigned char FAR *)buf4;\r
+\r
+ if (len) do {\r
+ c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);\r
+ } while (--len);\r
+ c = ~c;\r
+ return (unsigned long)(REV(c));\r
+}\r
+\r
+#endif /* BYFOUR */\r
+\r
+#define GF2_DIM 32 /* dimension of GF(2) vectors (length of CRC) */\r
+\r
+/* ========================================================================= */\r
+local unsigned long gf2_matrix_times(mat, vec)\r
+ unsigned long *mat;\r
+ unsigned long vec;\r
+{\r
+ unsigned long sum;\r
+\r
+ sum = 0;\r
+ while (vec) {\r
+ if (vec & 1)\r
+ sum ^= *mat;\r
+ vec >>= 1;\r
+ mat++;\r
+ }\r
+ return sum;\r
+}\r
+\r
+/* ========================================================================= */\r
+local void gf2_matrix_square(square, mat)\r
+ unsigned long *square;\r
+ unsigned long *mat;\r
+{\r
+ int n;\r
+\r
+ for (n = 0; n < GF2_DIM; n++)\r
+ square[n] = gf2_matrix_times(mat, mat[n]);\r
+}\r
+\r
+/* ========================================================================= */\r
+local uLong crc32_combine_(crc1, crc2, len2)\r
+ uLong crc1;\r
+ uLong crc2;\r
+ z_off64_t len2;\r
+{\r
+ int n;\r
+ unsigned long row;\r
+ unsigned long even[GF2_DIM]; /* even-power-of-two zeros operator */\r
+ unsigned long odd[GF2_DIM]; /* odd-power-of-two zeros operator */\r
+\r
+ /* degenerate case (also disallow negative lengths) */\r
+ if (len2 <= 0)\r
+ return crc1;\r
+\r
+ /* put operator for one zero bit in odd */\r
+ odd[0] = 0xedb88320UL; /* CRC-32 polynomial */\r
+ row = 1;\r
+ for (n = 1; n < GF2_DIM; n++) {\r
+ odd[n] = row;\r
+ row <<= 1;\r
+ }\r
+\r
+ /* put operator for two zero bits in even */\r
+ gf2_matrix_square(even, odd);\r
+\r
+ /* put operator for four zero bits in odd */\r
+ gf2_matrix_square(odd, even);\r
+\r
+ /* apply len2 zeros to crc1 (first square will put the operator for one\r
+ zero byte, eight zero bits, in even) */\r
+ do {\r
+ /* apply zeros operator for this bit of len2 */\r
+ gf2_matrix_square(even, odd);\r
+ if (len2 & 1)\r
+ crc1 = gf2_matrix_times(even, crc1);\r
+ len2 >>= 1;\r
+\r
+ /* if no more bits set, then done */\r
+ if (len2 == 0)\r
+ break;\r
+\r
+ /* another iteration of the loop with odd and even swapped */\r
+ gf2_matrix_square(odd, even);\r
+ if (len2 & 1)\r
+ crc1 = gf2_matrix_times(odd, crc1);\r
+ len2 >>= 1;\r
+\r
+ /* if no more bits set, then done */\r
+ } while (len2 != 0);\r
+\r
+ /* return combined crc */\r
+ crc1 ^= crc2;\r
+ return crc1;\r
+}\r
+\r
+/* ========================================================================= */\r
+uLong ZEXPORT crc32_combine(crc1, crc2, len2)\r
+ uLong crc1;\r
+ uLong crc2;\r
+ z_off_t len2;\r
+{\r
+ return crc32_combine_(crc1, crc2, len2);\r
+}\r
+\r
+uLong ZEXPORT crc32_combine64(crc1, crc2, len2)\r
+ uLong crc1;\r
+ uLong crc2;\r
+ z_off64_t len2;\r
+{\r
+ return crc32_combine_(crc1, crc2, len2);\r
+}\r
--- /dev/null
+/* crc32.h -- tables for rapid CRC calculation\r
+ * Generated automatically by crc32.c\r
+ */\r
+\r
+local const unsigned long FAR crc_table[TBLS][256] =\r
+{\r
+ {\r
+ 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,\r
+ 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,\r
+ 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,\r
+ 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,\r
+ 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,\r
+ 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,\r
+ 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,\r
+ 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,\r
+ 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,\r
+ 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,\r
+ 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,\r
+ 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,\r
+ 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,\r
+ 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,\r
+ 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,\r
+ 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,\r
+ 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,\r
+ 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,\r
+ 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,\r
+ 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,\r
+ 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,\r
+ 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,\r
+ 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,\r
+ 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,\r
+ 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,\r
+ 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,\r
+ 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,\r
+ 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,\r
+ 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,\r
+ 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,\r
+ 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,\r
+ 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,\r
+ 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,\r
+ 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,\r
+ 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,\r
+ 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,\r
+ 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,\r
+ 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,\r
+ 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,\r
+ 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,\r
+ 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,\r
+ 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,\r
+ 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,\r
+ 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,\r
+ 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,\r
+ 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,\r
+ 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,\r
+ 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,\r
+ 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,\r
+ 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,\r
+ 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,\r
+ 0x2d02ef8dUL\r
+#ifdef BYFOUR\r
+ },\r
+ {\r
+ 0x00000000UL, 0x191b3141UL, 0x32366282UL, 0x2b2d53c3UL, 0x646cc504UL,\r
+ 0x7d77f445UL, 0x565aa786UL, 0x4f4196c7UL, 0xc8d98a08UL, 0xd1c2bb49UL,\r
+ 0xfaefe88aUL, 0xe3f4d9cbUL, 0xacb54f0cUL, 0xb5ae7e4dUL, 0x9e832d8eUL,\r
+ 0x87981ccfUL, 0x4ac21251UL, 0x53d92310UL, 0x78f470d3UL, 0x61ef4192UL,\r
+ 0x2eaed755UL, 0x37b5e614UL, 0x1c98b5d7UL, 0x05838496UL, 0x821b9859UL,\r
+ 0x9b00a918UL, 0xb02dfadbUL, 0xa936cb9aUL, 0xe6775d5dUL, 0xff6c6c1cUL,\r
+ 0xd4413fdfUL, 0xcd5a0e9eUL, 0x958424a2UL, 0x8c9f15e3UL, 0xa7b24620UL,\r
+ 0xbea97761UL, 0xf1e8e1a6UL, 0xe8f3d0e7UL, 0xc3de8324UL, 0xdac5b265UL,\r
+ 0x5d5daeaaUL, 0x44469febUL, 0x6f6bcc28UL, 0x7670fd69UL, 0x39316baeUL,\r
+ 0x202a5aefUL, 0x0b07092cUL, 0x121c386dUL, 0xdf4636f3UL, 0xc65d07b2UL,\r
+ 0xed705471UL, 0xf46b6530UL, 0xbb2af3f7UL, 0xa231c2b6UL, 0x891c9175UL,\r
+ 0x9007a034UL, 0x179fbcfbUL, 0x0e848dbaUL, 0x25a9de79UL, 0x3cb2ef38UL,\r
+ 0x73f379ffUL, 0x6ae848beUL, 0x41c51b7dUL, 0x58de2a3cUL, 0xf0794f05UL,\r
+ 0xe9627e44UL, 0xc24f2d87UL, 0xdb541cc6UL, 0x94158a01UL, 0x8d0ebb40UL,\r
+ 0xa623e883UL, 0xbf38d9c2UL, 0x38a0c50dUL, 0x21bbf44cUL, 0x0a96a78fUL,\r
+ 0x138d96ceUL, 0x5ccc0009UL, 0x45d73148UL, 0x6efa628bUL, 0x77e153caUL,\r
+ 0xbabb5d54UL, 0xa3a06c15UL, 0x888d3fd6UL, 0x91960e97UL, 0xded79850UL,\r
+ 0xc7cca911UL, 0xece1fad2UL, 0xf5facb93UL, 0x7262d75cUL, 0x6b79e61dUL,\r
+ 0x4054b5deUL, 0x594f849fUL, 0x160e1258UL, 0x0f152319UL, 0x243870daUL,\r
+ 0x3d23419bUL, 0x65fd6ba7UL, 0x7ce65ae6UL, 0x57cb0925UL, 0x4ed03864UL,\r
+ 0x0191aea3UL, 0x188a9fe2UL, 0x33a7cc21UL, 0x2abcfd60UL, 0xad24e1afUL,\r
+ 0xb43fd0eeUL, 0x9f12832dUL, 0x8609b26cUL, 0xc94824abUL, 0xd05315eaUL,\r
+ 0xfb7e4629UL, 0xe2657768UL, 0x2f3f79f6UL, 0x362448b7UL, 0x1d091b74UL,\r
+ 0x04122a35UL, 0x4b53bcf2UL, 0x52488db3UL, 0x7965de70UL, 0x607eef31UL,\r
+ 0xe7e6f3feUL, 0xfefdc2bfUL, 0xd5d0917cUL, 0xcccba03dUL, 0x838a36faUL,\r
+ 0x9a9107bbUL, 0xb1bc5478UL, 0xa8a76539UL, 0x3b83984bUL, 0x2298a90aUL,\r
+ 0x09b5fac9UL, 0x10aecb88UL, 0x5fef5d4fUL, 0x46f46c0eUL, 0x6dd93fcdUL,\r
+ 0x74c20e8cUL, 0xf35a1243UL, 0xea412302UL, 0xc16c70c1UL, 0xd8774180UL,\r
+ 0x9736d747UL, 0x8e2de606UL, 0xa500b5c5UL, 0xbc1b8484UL, 0x71418a1aUL,\r
+ 0x685abb5bUL, 0x4377e898UL, 0x5a6cd9d9UL, 0x152d4f1eUL, 0x0c367e5fUL,\r
+ 0x271b2d9cUL, 0x3e001cddUL, 0xb9980012UL, 0xa0833153UL, 0x8bae6290UL,\r
+ 0x92b553d1UL, 0xddf4c516UL, 0xc4eff457UL, 0xefc2a794UL, 0xf6d996d5UL,\r
+ 0xae07bce9UL, 0xb71c8da8UL, 0x9c31de6bUL, 0x852aef2aUL, 0xca6b79edUL,\r
+ 0xd37048acUL, 0xf85d1b6fUL, 0xe1462a2eUL, 0x66de36e1UL, 0x7fc507a0UL,\r
+ 0x54e85463UL, 0x4df36522UL, 0x02b2f3e5UL, 0x1ba9c2a4UL, 0x30849167UL,\r
+ 0x299fa026UL, 0xe4c5aeb8UL, 0xfdde9ff9UL, 0xd6f3cc3aUL, 0xcfe8fd7bUL,\r
+ 0x80a96bbcUL, 0x99b25afdUL, 0xb29f093eUL, 0xab84387fUL, 0x2c1c24b0UL,\r
+ 0x350715f1UL, 0x1e2a4632UL, 0x07317773UL, 0x4870e1b4UL, 0x516bd0f5UL,\r
+ 0x7a468336UL, 0x635db277UL, 0xcbfad74eUL, 0xd2e1e60fUL, 0xf9ccb5ccUL,\r
+ 0xe0d7848dUL, 0xaf96124aUL, 0xb68d230bUL, 0x9da070c8UL, 0x84bb4189UL,\r
+ 0x03235d46UL, 0x1a386c07UL, 0x31153fc4UL, 0x280e0e85UL, 0x674f9842UL,\r
+ 0x7e54a903UL, 0x5579fac0UL, 0x4c62cb81UL, 0x8138c51fUL, 0x9823f45eUL,\r
+ 0xb30ea79dUL, 0xaa1596dcUL, 0xe554001bUL, 0xfc4f315aUL, 0xd7626299UL,\r
+ 0xce7953d8UL, 0x49e14f17UL, 0x50fa7e56UL, 0x7bd72d95UL, 0x62cc1cd4UL,\r
+ 0x2d8d8a13UL, 0x3496bb52UL, 0x1fbbe891UL, 0x06a0d9d0UL, 0x5e7ef3ecUL,\r
+ 0x4765c2adUL, 0x6c48916eUL, 0x7553a02fUL, 0x3a1236e8UL, 0x230907a9UL,\r
+ 0x0824546aUL, 0x113f652bUL, 0x96a779e4UL, 0x8fbc48a5UL, 0xa4911b66UL,\r
+ 0xbd8a2a27UL, 0xf2cbbce0UL, 0xebd08da1UL, 0xc0fdde62UL, 0xd9e6ef23UL,\r
+ 0x14bce1bdUL, 0x0da7d0fcUL, 0x268a833fUL, 0x3f91b27eUL, 0x70d024b9UL,\r
+ 0x69cb15f8UL, 0x42e6463bUL, 0x5bfd777aUL, 0xdc656bb5UL, 0xc57e5af4UL,\r
+ 0xee530937UL, 0xf7483876UL, 0xb809aeb1UL, 0xa1129ff0UL, 0x8a3fcc33UL,\r
+ 0x9324fd72UL\r
+ },\r
+ {\r
+ 0x00000000UL, 0x01c26a37UL, 0x0384d46eUL, 0x0246be59UL, 0x0709a8dcUL,\r
+ 0x06cbc2ebUL, 0x048d7cb2UL, 0x054f1685UL, 0x0e1351b8UL, 0x0fd13b8fUL,\r
+ 0x0d9785d6UL, 0x0c55efe1UL, 0x091af964UL, 0x08d89353UL, 0x0a9e2d0aUL,\r
+ 0x0b5c473dUL, 0x1c26a370UL, 0x1de4c947UL, 0x1fa2771eUL, 0x1e601d29UL,\r
+ 0x1b2f0bacUL, 0x1aed619bUL, 0x18abdfc2UL, 0x1969b5f5UL, 0x1235f2c8UL,\r
+ 0x13f798ffUL, 0x11b126a6UL, 0x10734c91UL, 0x153c5a14UL, 0x14fe3023UL,\r
+ 0x16b88e7aUL, 0x177ae44dUL, 0x384d46e0UL, 0x398f2cd7UL, 0x3bc9928eUL,\r
+ 0x3a0bf8b9UL, 0x3f44ee3cUL, 0x3e86840bUL, 0x3cc03a52UL, 0x3d025065UL,\r
+ 0x365e1758UL, 0x379c7d6fUL, 0x35dac336UL, 0x3418a901UL, 0x3157bf84UL,\r
+ 0x3095d5b3UL, 0x32d36beaUL, 0x331101ddUL, 0x246be590UL, 0x25a98fa7UL,\r
+ 0x27ef31feUL, 0x262d5bc9UL, 0x23624d4cUL, 0x22a0277bUL, 0x20e69922UL,\r
+ 0x2124f315UL, 0x2a78b428UL, 0x2bbade1fUL, 0x29fc6046UL, 0x283e0a71UL,\r
+ 0x2d711cf4UL, 0x2cb376c3UL, 0x2ef5c89aUL, 0x2f37a2adUL, 0x709a8dc0UL,\r
+ 0x7158e7f7UL, 0x731e59aeUL, 0x72dc3399UL, 0x7793251cUL, 0x76514f2bUL,\r
+ 0x7417f172UL, 0x75d59b45UL, 0x7e89dc78UL, 0x7f4bb64fUL, 0x7d0d0816UL,\r
+ 0x7ccf6221UL, 0x798074a4UL, 0x78421e93UL, 0x7a04a0caUL, 0x7bc6cafdUL,\r
+ 0x6cbc2eb0UL, 0x6d7e4487UL, 0x6f38fadeUL, 0x6efa90e9UL, 0x6bb5866cUL,\r
+ 0x6a77ec5bUL, 0x68315202UL, 0x69f33835UL, 0x62af7f08UL, 0x636d153fUL,\r
+ 0x612bab66UL, 0x60e9c151UL, 0x65a6d7d4UL, 0x6464bde3UL, 0x662203baUL,\r
+ 0x67e0698dUL, 0x48d7cb20UL, 0x4915a117UL, 0x4b531f4eUL, 0x4a917579UL,\r
+ 0x4fde63fcUL, 0x4e1c09cbUL, 0x4c5ab792UL, 0x4d98dda5UL, 0x46c49a98UL,\r
+ 0x4706f0afUL, 0x45404ef6UL, 0x448224c1UL, 0x41cd3244UL, 0x400f5873UL,\r
+ 0x4249e62aUL, 0x438b8c1dUL, 0x54f16850UL, 0x55330267UL, 0x5775bc3eUL,\r
+ 0x56b7d609UL, 0x53f8c08cUL, 0x523aaabbUL, 0x507c14e2UL, 0x51be7ed5UL,\r
+ 0x5ae239e8UL, 0x5b2053dfUL, 0x5966ed86UL, 0x58a487b1UL, 0x5deb9134UL,\r
+ 0x5c29fb03UL, 0x5e6f455aUL, 0x5fad2f6dUL, 0xe1351b80UL, 0xe0f771b7UL,\r
+ 0xe2b1cfeeUL, 0xe373a5d9UL, 0xe63cb35cUL, 0xe7fed96bUL, 0xe5b86732UL,\r
+ 0xe47a0d05UL, 0xef264a38UL, 0xeee4200fUL, 0xeca29e56UL, 0xed60f461UL,\r
+ 0xe82fe2e4UL, 0xe9ed88d3UL, 0xebab368aUL, 0xea695cbdUL, 0xfd13b8f0UL,\r
+ 0xfcd1d2c7UL, 0xfe976c9eUL, 0xff5506a9UL, 0xfa1a102cUL, 0xfbd87a1bUL,\r
+ 0xf99ec442UL, 0xf85cae75UL, 0xf300e948UL, 0xf2c2837fUL, 0xf0843d26UL,\r
+ 0xf1465711UL, 0xf4094194UL, 0xf5cb2ba3UL, 0xf78d95faUL, 0xf64fffcdUL,\r
+ 0xd9785d60UL, 0xd8ba3757UL, 0xdafc890eUL, 0xdb3ee339UL, 0xde71f5bcUL,\r
+ 0xdfb39f8bUL, 0xddf521d2UL, 0xdc374be5UL, 0xd76b0cd8UL, 0xd6a966efUL,\r
+ 0xd4efd8b6UL, 0xd52db281UL, 0xd062a404UL, 0xd1a0ce33UL, 0xd3e6706aUL,\r
+ 0xd2241a5dUL, 0xc55efe10UL, 0xc49c9427UL, 0xc6da2a7eUL, 0xc7184049UL,\r
+ 0xc25756ccUL, 0xc3953cfbUL, 0xc1d382a2UL, 0xc011e895UL, 0xcb4dafa8UL,\r
+ 0xca8fc59fUL, 0xc8c97bc6UL, 0xc90b11f1UL, 0xcc440774UL, 0xcd866d43UL,\r
+ 0xcfc0d31aUL, 0xce02b92dUL, 0x91af9640UL, 0x906dfc77UL, 0x922b422eUL,\r
+ 0x93e92819UL, 0x96a63e9cUL, 0x976454abUL, 0x9522eaf2UL, 0x94e080c5UL,\r
+ 0x9fbcc7f8UL, 0x9e7eadcfUL, 0x9c381396UL, 0x9dfa79a1UL, 0x98b56f24UL,\r
+ 0x99770513UL, 0x9b31bb4aUL, 0x9af3d17dUL, 0x8d893530UL, 0x8c4b5f07UL,\r
+ 0x8e0de15eUL, 0x8fcf8b69UL, 0x8a809decUL, 0x8b42f7dbUL, 0x89044982UL,\r
+ 0x88c623b5UL, 0x839a6488UL, 0x82580ebfUL, 0x801eb0e6UL, 0x81dcdad1UL,\r
+ 0x8493cc54UL, 0x8551a663UL, 0x8717183aUL, 0x86d5720dUL, 0xa9e2d0a0UL,\r
+ 0xa820ba97UL, 0xaa6604ceUL, 0xaba46ef9UL, 0xaeeb787cUL, 0xaf29124bUL,\r
+ 0xad6fac12UL, 0xacadc625UL, 0xa7f18118UL, 0xa633eb2fUL, 0xa4755576UL,\r
+ 0xa5b73f41UL, 0xa0f829c4UL, 0xa13a43f3UL, 0xa37cfdaaUL, 0xa2be979dUL,\r
+ 0xb5c473d0UL, 0xb40619e7UL, 0xb640a7beUL, 0xb782cd89UL, 0xb2cddb0cUL,\r
+ 0xb30fb13bUL, 0xb1490f62UL, 0xb08b6555UL, 0xbbd72268UL, 0xba15485fUL,\r
+ 0xb853f606UL, 0xb9919c31UL, 0xbcde8ab4UL, 0xbd1ce083UL, 0xbf5a5edaUL,\r
+ 0xbe9834edUL\r
+ },\r
+ {\r
+ 0x00000000UL, 0xb8bc6765UL, 0xaa09c88bUL, 0x12b5afeeUL, 0x8f629757UL,\r
+ 0x37def032UL, 0x256b5fdcUL, 0x9dd738b9UL, 0xc5b428efUL, 0x7d084f8aUL,\r
+ 0x6fbde064UL, 0xd7018701UL, 0x4ad6bfb8UL, 0xf26ad8ddUL, 0xe0df7733UL,\r
+ 0x58631056UL, 0x5019579fUL, 0xe8a530faUL, 0xfa109f14UL, 0x42acf871UL,\r
+ 0xdf7bc0c8UL, 0x67c7a7adUL, 0x75720843UL, 0xcdce6f26UL, 0x95ad7f70UL,\r
+ 0x2d111815UL, 0x3fa4b7fbUL, 0x8718d09eUL, 0x1acfe827UL, 0xa2738f42UL,\r
+ 0xb0c620acUL, 0x087a47c9UL, 0xa032af3eUL, 0x188ec85bUL, 0x0a3b67b5UL,\r
+ 0xb28700d0UL, 0x2f503869UL, 0x97ec5f0cUL, 0x8559f0e2UL, 0x3de59787UL,\r
+ 0x658687d1UL, 0xdd3ae0b4UL, 0xcf8f4f5aUL, 0x7733283fUL, 0xeae41086UL,\r
+ 0x525877e3UL, 0x40edd80dUL, 0xf851bf68UL, 0xf02bf8a1UL, 0x48979fc4UL,\r
+ 0x5a22302aUL, 0xe29e574fUL, 0x7f496ff6UL, 0xc7f50893UL, 0xd540a77dUL,\r
+ 0x6dfcc018UL, 0x359fd04eUL, 0x8d23b72bUL, 0x9f9618c5UL, 0x272a7fa0UL,\r
+ 0xbafd4719UL, 0x0241207cUL, 0x10f48f92UL, 0xa848e8f7UL, 0x9b14583dUL,\r
+ 0x23a83f58UL, 0x311d90b6UL, 0x89a1f7d3UL, 0x1476cf6aUL, 0xaccaa80fUL,\r
+ 0xbe7f07e1UL, 0x06c36084UL, 0x5ea070d2UL, 0xe61c17b7UL, 0xf4a9b859UL,\r
+ 0x4c15df3cUL, 0xd1c2e785UL, 0x697e80e0UL, 0x7bcb2f0eUL, 0xc377486bUL,\r
+ 0xcb0d0fa2UL, 0x73b168c7UL, 0x6104c729UL, 0xd9b8a04cUL, 0x446f98f5UL,\r
+ 0xfcd3ff90UL, 0xee66507eUL, 0x56da371bUL, 0x0eb9274dUL, 0xb6054028UL,\r
+ 0xa4b0efc6UL, 0x1c0c88a3UL, 0x81dbb01aUL, 0x3967d77fUL, 0x2bd27891UL,\r
+ 0x936e1ff4UL, 0x3b26f703UL, 0x839a9066UL, 0x912f3f88UL, 0x299358edUL,\r
+ 0xb4446054UL, 0x0cf80731UL, 0x1e4da8dfUL, 0xa6f1cfbaUL, 0xfe92dfecUL,\r
+ 0x462eb889UL, 0x549b1767UL, 0xec277002UL, 0x71f048bbUL, 0xc94c2fdeUL,\r
+ 0xdbf98030UL, 0x6345e755UL, 0x6b3fa09cUL, 0xd383c7f9UL, 0xc1366817UL,\r
+ 0x798a0f72UL, 0xe45d37cbUL, 0x5ce150aeUL, 0x4e54ff40UL, 0xf6e89825UL,\r
+ 0xae8b8873UL, 0x1637ef16UL, 0x048240f8UL, 0xbc3e279dUL, 0x21e91f24UL,\r
+ 0x99557841UL, 0x8be0d7afUL, 0x335cb0caUL, 0xed59b63bUL, 0x55e5d15eUL,\r
+ 0x47507eb0UL, 0xffec19d5UL, 0x623b216cUL, 0xda874609UL, 0xc832e9e7UL,\r
+ 0x708e8e82UL, 0x28ed9ed4UL, 0x9051f9b1UL, 0x82e4565fUL, 0x3a58313aUL,\r
+ 0xa78f0983UL, 0x1f336ee6UL, 0x0d86c108UL, 0xb53aa66dUL, 0xbd40e1a4UL,\r
+ 0x05fc86c1UL, 0x1749292fUL, 0xaff54e4aUL, 0x322276f3UL, 0x8a9e1196UL,\r
+ 0x982bbe78UL, 0x2097d91dUL, 0x78f4c94bUL, 0xc048ae2eUL, 0xd2fd01c0UL,\r
+ 0x6a4166a5UL, 0xf7965e1cUL, 0x4f2a3979UL, 0x5d9f9697UL, 0xe523f1f2UL,\r
+ 0x4d6b1905UL, 0xf5d77e60UL, 0xe762d18eUL, 0x5fdeb6ebUL, 0xc2098e52UL,\r
+ 0x7ab5e937UL, 0x680046d9UL, 0xd0bc21bcUL, 0x88df31eaUL, 0x3063568fUL,\r
+ 0x22d6f961UL, 0x9a6a9e04UL, 0x07bda6bdUL, 0xbf01c1d8UL, 0xadb46e36UL,\r
+ 0x15080953UL, 0x1d724e9aUL, 0xa5ce29ffUL, 0xb77b8611UL, 0x0fc7e174UL,\r
+ 0x9210d9cdUL, 0x2aacbea8UL, 0x38191146UL, 0x80a57623UL, 0xd8c66675UL,\r
+ 0x607a0110UL, 0x72cfaefeUL, 0xca73c99bUL, 0x57a4f122UL, 0xef189647UL,\r
+ 0xfdad39a9UL, 0x45115eccUL, 0x764dee06UL, 0xcef18963UL, 0xdc44268dUL,\r
+ 0x64f841e8UL, 0xf92f7951UL, 0x41931e34UL, 0x5326b1daUL, 0xeb9ad6bfUL,\r
+ 0xb3f9c6e9UL, 0x0b45a18cUL, 0x19f00e62UL, 0xa14c6907UL, 0x3c9b51beUL,\r
+ 0x842736dbUL, 0x96929935UL, 0x2e2efe50UL, 0x2654b999UL, 0x9ee8defcUL,\r
+ 0x8c5d7112UL, 0x34e11677UL, 0xa9362eceUL, 0x118a49abUL, 0x033fe645UL,\r
+ 0xbb838120UL, 0xe3e09176UL, 0x5b5cf613UL, 0x49e959fdUL, 0xf1553e98UL,\r
+ 0x6c820621UL, 0xd43e6144UL, 0xc68bceaaUL, 0x7e37a9cfUL, 0xd67f4138UL,\r
+ 0x6ec3265dUL, 0x7c7689b3UL, 0xc4caeed6UL, 0x591dd66fUL, 0xe1a1b10aUL,\r
+ 0xf3141ee4UL, 0x4ba87981UL, 0x13cb69d7UL, 0xab770eb2UL, 0xb9c2a15cUL,\r
+ 0x017ec639UL, 0x9ca9fe80UL, 0x241599e5UL, 0x36a0360bUL, 0x8e1c516eUL,\r
+ 0x866616a7UL, 0x3eda71c2UL, 0x2c6fde2cUL, 0x94d3b949UL, 0x090481f0UL,\r
+ 0xb1b8e695UL, 0xa30d497bUL, 0x1bb12e1eUL, 0x43d23e48UL, 0xfb6e592dUL,\r
+ 0xe9dbf6c3UL, 0x516791a6UL, 0xccb0a91fUL, 0x740cce7aUL, 0x66b96194UL,\r
+ 0xde0506f1UL\r
+ },\r
+ {\r
+ 0x00000000UL, 0x96300777UL, 0x2c610eeeUL, 0xba510999UL, 0x19c46d07UL,\r
+ 0x8ff46a70UL, 0x35a563e9UL, 0xa395649eUL, 0x3288db0eUL, 0xa4b8dc79UL,\r
+ 0x1ee9d5e0UL, 0x88d9d297UL, 0x2b4cb609UL, 0xbd7cb17eUL, 0x072db8e7UL,\r
+ 0x911dbf90UL, 0x6410b71dUL, 0xf220b06aUL, 0x4871b9f3UL, 0xde41be84UL,\r
+ 0x7dd4da1aUL, 0xebe4dd6dUL, 0x51b5d4f4UL, 0xc785d383UL, 0x56986c13UL,\r
+ 0xc0a86b64UL, 0x7af962fdUL, 0xecc9658aUL, 0x4f5c0114UL, 0xd96c0663UL,\r
+ 0x633d0ffaUL, 0xf50d088dUL, 0xc8206e3bUL, 0x5e10694cUL, 0xe44160d5UL,\r
+ 0x727167a2UL, 0xd1e4033cUL, 0x47d4044bUL, 0xfd850dd2UL, 0x6bb50aa5UL,\r
+ 0xfaa8b535UL, 0x6c98b242UL, 0xd6c9bbdbUL, 0x40f9bcacUL, 0xe36cd832UL,\r
+ 0x755cdf45UL, 0xcf0dd6dcUL, 0x593dd1abUL, 0xac30d926UL, 0x3a00de51UL,\r
+ 0x8051d7c8UL, 0x1661d0bfUL, 0xb5f4b421UL, 0x23c4b356UL, 0x9995bacfUL,\r
+ 0x0fa5bdb8UL, 0x9eb80228UL, 0x0888055fUL, 0xb2d90cc6UL, 0x24e90bb1UL,\r
+ 0x877c6f2fUL, 0x114c6858UL, 0xab1d61c1UL, 0x3d2d66b6UL, 0x9041dc76UL,\r
+ 0x0671db01UL, 0xbc20d298UL, 0x2a10d5efUL, 0x8985b171UL, 0x1fb5b606UL,\r
+ 0xa5e4bf9fUL, 0x33d4b8e8UL, 0xa2c90778UL, 0x34f9000fUL, 0x8ea80996UL,\r
+ 0x18980ee1UL, 0xbb0d6a7fUL, 0x2d3d6d08UL, 0x976c6491UL, 0x015c63e6UL,\r
+ 0xf4516b6bUL, 0x62616c1cUL, 0xd8306585UL, 0x4e0062f2UL, 0xed95066cUL,\r
+ 0x7ba5011bUL, 0xc1f40882UL, 0x57c40ff5UL, 0xc6d9b065UL, 0x50e9b712UL,\r
+ 0xeab8be8bUL, 0x7c88b9fcUL, 0xdf1ddd62UL, 0x492dda15UL, 0xf37cd38cUL,\r
+ 0x654cd4fbUL, 0x5861b24dUL, 0xce51b53aUL, 0x7400bca3UL, 0xe230bbd4UL,\r
+ 0x41a5df4aUL, 0xd795d83dUL, 0x6dc4d1a4UL, 0xfbf4d6d3UL, 0x6ae96943UL,\r
+ 0xfcd96e34UL, 0x468867adUL, 0xd0b860daUL, 0x732d0444UL, 0xe51d0333UL,\r
+ 0x5f4c0aaaUL, 0xc97c0dddUL, 0x3c710550UL, 0xaa410227UL, 0x10100bbeUL,\r
+ 0x86200cc9UL, 0x25b56857UL, 0xb3856f20UL, 0x09d466b9UL, 0x9fe461ceUL,\r
+ 0x0ef9de5eUL, 0x98c9d929UL, 0x2298d0b0UL, 0xb4a8d7c7UL, 0x173db359UL,\r
+ 0x810db42eUL, 0x3b5cbdb7UL, 0xad6cbac0UL, 0x2083b8edUL, 0xb6b3bf9aUL,\r
+ 0x0ce2b603UL, 0x9ad2b174UL, 0x3947d5eaUL, 0xaf77d29dUL, 0x1526db04UL,\r
+ 0x8316dc73UL, 0x120b63e3UL, 0x843b6494UL, 0x3e6a6d0dUL, 0xa85a6a7aUL,\r
+ 0x0bcf0ee4UL, 0x9dff0993UL, 0x27ae000aUL, 0xb19e077dUL, 0x44930ff0UL,\r
+ 0xd2a30887UL, 0x68f2011eUL, 0xfec20669UL, 0x5d5762f7UL, 0xcb676580UL,\r
+ 0x71366c19UL, 0xe7066b6eUL, 0x761bd4feUL, 0xe02bd389UL, 0x5a7ada10UL,\r
+ 0xcc4add67UL, 0x6fdfb9f9UL, 0xf9efbe8eUL, 0x43beb717UL, 0xd58eb060UL,\r
+ 0xe8a3d6d6UL, 0x7e93d1a1UL, 0xc4c2d838UL, 0x52f2df4fUL, 0xf167bbd1UL,\r
+ 0x6757bca6UL, 0xdd06b53fUL, 0x4b36b248UL, 0xda2b0dd8UL, 0x4c1b0aafUL,\r
+ 0xf64a0336UL, 0x607a0441UL, 0xc3ef60dfUL, 0x55df67a8UL, 0xef8e6e31UL,\r
+ 0x79be6946UL, 0x8cb361cbUL, 0x1a8366bcUL, 0xa0d26f25UL, 0x36e26852UL,\r
+ 0x95770cccUL, 0x03470bbbUL, 0xb9160222UL, 0x2f260555UL, 0xbe3bbac5UL,\r
+ 0x280bbdb2UL, 0x925ab42bUL, 0x046ab35cUL, 0xa7ffd7c2UL, 0x31cfd0b5UL,\r
+ 0x8b9ed92cUL, 0x1daede5bUL, 0xb0c2649bUL, 0x26f263ecUL, 0x9ca36a75UL,\r
+ 0x0a936d02UL, 0xa906099cUL, 0x3f360eebUL, 0x85670772UL, 0x13570005UL,\r
+ 0x824abf95UL, 0x147ab8e2UL, 0xae2bb17bUL, 0x381bb60cUL, 0x9b8ed292UL,\r
+ 0x0dbed5e5UL, 0xb7efdc7cUL, 0x21dfdb0bUL, 0xd4d2d386UL, 0x42e2d4f1UL,\r
+ 0xf8b3dd68UL, 0x6e83da1fUL, 0xcd16be81UL, 0x5b26b9f6UL, 0xe177b06fUL,\r
+ 0x7747b718UL, 0xe65a0888UL, 0x706a0fffUL, 0xca3b0666UL, 0x5c0b0111UL,\r
+ 0xff9e658fUL, 0x69ae62f8UL, 0xd3ff6b61UL, 0x45cf6c16UL, 0x78e20aa0UL,\r
+ 0xeed20dd7UL, 0x5483044eUL, 0xc2b30339UL, 0x612667a7UL, 0xf71660d0UL,\r
+ 0x4d476949UL, 0xdb776e3eUL, 0x4a6ad1aeUL, 0xdc5ad6d9UL, 0x660bdf40UL,\r
+ 0xf03bd837UL, 0x53aebca9UL, 0xc59ebbdeUL, 0x7fcfb247UL, 0xe9ffb530UL,\r
+ 0x1cf2bdbdUL, 0x8ac2bacaUL, 0x3093b353UL, 0xa6a3b424UL, 0x0536d0baUL,\r
+ 0x9306d7cdUL, 0x2957de54UL, 0xbf67d923UL, 0x2e7a66b3UL, 0xb84a61c4UL,\r
+ 0x021b685dUL, 0x942b6f2aUL, 0x37be0bb4UL, 0xa18e0cc3UL, 0x1bdf055aUL,\r
+ 0x8def022dUL\r
+ },\r
+ {\r
+ 0x00000000UL, 0x41311b19UL, 0x82623632UL, 0xc3532d2bUL, 0x04c56c64UL,\r
+ 0x45f4777dUL, 0x86a75a56UL, 0xc796414fUL, 0x088ad9c8UL, 0x49bbc2d1UL,\r
+ 0x8ae8effaUL, 0xcbd9f4e3UL, 0x0c4fb5acUL, 0x4d7eaeb5UL, 0x8e2d839eUL,\r
+ 0xcf1c9887UL, 0x5112c24aUL, 0x1023d953UL, 0xd370f478UL, 0x9241ef61UL,\r
+ 0x55d7ae2eUL, 0x14e6b537UL, 0xd7b5981cUL, 0x96848305UL, 0x59981b82UL,\r
+ 0x18a9009bUL, 0xdbfa2db0UL, 0x9acb36a9UL, 0x5d5d77e6UL, 0x1c6c6cffUL,\r
+ 0xdf3f41d4UL, 0x9e0e5acdUL, 0xa2248495UL, 0xe3159f8cUL, 0x2046b2a7UL,\r
+ 0x6177a9beUL, 0xa6e1e8f1UL, 0xe7d0f3e8UL, 0x2483dec3UL, 0x65b2c5daUL,\r
+ 0xaaae5d5dUL, 0xeb9f4644UL, 0x28cc6b6fUL, 0x69fd7076UL, 0xae6b3139UL,\r
+ 0xef5a2a20UL, 0x2c09070bUL, 0x6d381c12UL, 0xf33646dfUL, 0xb2075dc6UL,\r
+ 0x715470edUL, 0x30656bf4UL, 0xf7f32abbUL, 0xb6c231a2UL, 0x75911c89UL,\r
+ 0x34a00790UL, 0xfbbc9f17UL, 0xba8d840eUL, 0x79dea925UL, 0x38efb23cUL,\r
+ 0xff79f373UL, 0xbe48e86aUL, 0x7d1bc541UL, 0x3c2ade58UL, 0x054f79f0UL,\r
+ 0x447e62e9UL, 0x872d4fc2UL, 0xc61c54dbUL, 0x018a1594UL, 0x40bb0e8dUL,\r
+ 0x83e823a6UL, 0xc2d938bfUL, 0x0dc5a038UL, 0x4cf4bb21UL, 0x8fa7960aUL,\r
+ 0xce968d13UL, 0x0900cc5cUL, 0x4831d745UL, 0x8b62fa6eUL, 0xca53e177UL,\r
+ 0x545dbbbaUL, 0x156ca0a3UL, 0xd63f8d88UL, 0x970e9691UL, 0x5098d7deUL,\r
+ 0x11a9ccc7UL, 0xd2fae1ecUL, 0x93cbfaf5UL, 0x5cd76272UL, 0x1de6796bUL,\r
+ 0xdeb55440UL, 0x9f844f59UL, 0x58120e16UL, 0x1923150fUL, 0xda703824UL,\r
+ 0x9b41233dUL, 0xa76bfd65UL, 0xe65ae67cUL, 0x2509cb57UL, 0x6438d04eUL,\r
+ 0xa3ae9101UL, 0xe29f8a18UL, 0x21cca733UL, 0x60fdbc2aUL, 0xafe124adUL,\r
+ 0xeed03fb4UL, 0x2d83129fUL, 0x6cb20986UL, 0xab2448c9UL, 0xea1553d0UL,\r
+ 0x29467efbUL, 0x687765e2UL, 0xf6793f2fUL, 0xb7482436UL, 0x741b091dUL,\r
+ 0x352a1204UL, 0xf2bc534bUL, 0xb38d4852UL, 0x70de6579UL, 0x31ef7e60UL,\r
+ 0xfef3e6e7UL, 0xbfc2fdfeUL, 0x7c91d0d5UL, 0x3da0cbccUL, 0xfa368a83UL,\r
+ 0xbb07919aUL, 0x7854bcb1UL, 0x3965a7a8UL, 0x4b98833bUL, 0x0aa99822UL,\r
+ 0xc9fab509UL, 0x88cbae10UL, 0x4f5def5fUL, 0x0e6cf446UL, 0xcd3fd96dUL,\r
+ 0x8c0ec274UL, 0x43125af3UL, 0x022341eaUL, 0xc1706cc1UL, 0x804177d8UL,\r
+ 0x47d73697UL, 0x06e62d8eUL, 0xc5b500a5UL, 0x84841bbcUL, 0x1a8a4171UL,\r
+ 0x5bbb5a68UL, 0x98e87743UL, 0xd9d96c5aUL, 0x1e4f2d15UL, 0x5f7e360cUL,\r
+ 0x9c2d1b27UL, 0xdd1c003eUL, 0x120098b9UL, 0x533183a0UL, 0x9062ae8bUL,\r
+ 0xd153b592UL, 0x16c5f4ddUL, 0x57f4efc4UL, 0x94a7c2efUL, 0xd596d9f6UL,\r
+ 0xe9bc07aeUL, 0xa88d1cb7UL, 0x6bde319cUL, 0x2aef2a85UL, 0xed796bcaUL,\r
+ 0xac4870d3UL, 0x6f1b5df8UL, 0x2e2a46e1UL, 0xe136de66UL, 0xa007c57fUL,\r
+ 0x6354e854UL, 0x2265f34dUL, 0xe5f3b202UL, 0xa4c2a91bUL, 0x67918430UL,\r
+ 0x26a09f29UL, 0xb8aec5e4UL, 0xf99fdefdUL, 0x3accf3d6UL, 0x7bfde8cfUL,\r
+ 0xbc6ba980UL, 0xfd5ab299UL, 0x3e099fb2UL, 0x7f3884abUL, 0xb0241c2cUL,\r
+ 0xf1150735UL, 0x32462a1eUL, 0x73773107UL, 0xb4e17048UL, 0xf5d06b51UL,\r
+ 0x3683467aUL, 0x77b25d63UL, 0x4ed7facbUL, 0x0fe6e1d2UL, 0xccb5ccf9UL,\r
+ 0x8d84d7e0UL, 0x4a1296afUL, 0x0b238db6UL, 0xc870a09dUL, 0x8941bb84UL,\r
+ 0x465d2303UL, 0x076c381aUL, 0xc43f1531UL, 0x850e0e28UL, 0x42984f67UL,\r
+ 0x03a9547eUL, 0xc0fa7955UL, 0x81cb624cUL, 0x1fc53881UL, 0x5ef42398UL,\r
+ 0x9da70eb3UL, 0xdc9615aaUL, 0x1b0054e5UL, 0x5a314ffcUL, 0x996262d7UL,\r
+ 0xd85379ceUL, 0x174fe149UL, 0x567efa50UL, 0x952dd77bUL, 0xd41ccc62UL,\r
+ 0x138a8d2dUL, 0x52bb9634UL, 0x91e8bb1fUL, 0xd0d9a006UL, 0xecf37e5eUL,\r
+ 0xadc26547UL, 0x6e91486cUL, 0x2fa05375UL, 0xe836123aUL, 0xa9070923UL,\r
+ 0x6a542408UL, 0x2b653f11UL, 0xe479a796UL, 0xa548bc8fUL, 0x661b91a4UL,\r
+ 0x272a8abdUL, 0xe0bccbf2UL, 0xa18dd0ebUL, 0x62defdc0UL, 0x23efe6d9UL,\r
+ 0xbde1bc14UL, 0xfcd0a70dUL, 0x3f838a26UL, 0x7eb2913fUL, 0xb924d070UL,\r
+ 0xf815cb69UL, 0x3b46e642UL, 0x7a77fd5bUL, 0xb56b65dcUL, 0xf45a7ec5UL,\r
+ 0x370953eeUL, 0x763848f7UL, 0xb1ae09b8UL, 0xf09f12a1UL, 0x33cc3f8aUL,\r
+ 0x72fd2493UL\r
+ },\r
+ {\r
+ 0x00000000UL, 0x376ac201UL, 0x6ed48403UL, 0x59be4602UL, 0xdca80907UL,\r
+ 0xebc2cb06UL, 0xb27c8d04UL, 0x85164f05UL, 0xb851130eUL, 0x8f3bd10fUL,\r
+ 0xd685970dUL, 0xe1ef550cUL, 0x64f91a09UL, 0x5393d808UL, 0x0a2d9e0aUL,\r
+ 0x3d475c0bUL, 0x70a3261cUL, 0x47c9e41dUL, 0x1e77a21fUL, 0x291d601eUL,\r
+ 0xac0b2f1bUL, 0x9b61ed1aUL, 0xc2dfab18UL, 0xf5b56919UL, 0xc8f23512UL,\r
+ 0xff98f713UL, 0xa626b111UL, 0x914c7310UL, 0x145a3c15UL, 0x2330fe14UL,\r
+ 0x7a8eb816UL, 0x4de47a17UL, 0xe0464d38UL, 0xd72c8f39UL, 0x8e92c93bUL,\r
+ 0xb9f80b3aUL, 0x3cee443fUL, 0x0b84863eUL, 0x523ac03cUL, 0x6550023dUL,\r
+ 0x58175e36UL, 0x6f7d9c37UL, 0x36c3da35UL, 0x01a91834UL, 0x84bf5731UL,\r
+ 0xb3d59530UL, 0xea6bd332UL, 0xdd011133UL, 0x90e56b24UL, 0xa78fa925UL,\r
+ 0xfe31ef27UL, 0xc95b2d26UL, 0x4c4d6223UL, 0x7b27a022UL, 0x2299e620UL,\r
+ 0x15f32421UL, 0x28b4782aUL, 0x1fdeba2bUL, 0x4660fc29UL, 0x710a3e28UL,\r
+ 0xf41c712dUL, 0xc376b32cUL, 0x9ac8f52eUL, 0xada2372fUL, 0xc08d9a70UL,\r
+ 0xf7e75871UL, 0xae591e73UL, 0x9933dc72UL, 0x1c259377UL, 0x2b4f5176UL,\r
+ 0x72f11774UL, 0x459bd575UL, 0x78dc897eUL, 0x4fb64b7fUL, 0x16080d7dUL,\r
+ 0x2162cf7cUL, 0xa4748079UL, 0x931e4278UL, 0xcaa0047aUL, 0xfdcac67bUL,\r
+ 0xb02ebc6cUL, 0x87447e6dUL, 0xdefa386fUL, 0xe990fa6eUL, 0x6c86b56bUL,\r
+ 0x5bec776aUL, 0x02523168UL, 0x3538f369UL, 0x087faf62UL, 0x3f156d63UL,\r
+ 0x66ab2b61UL, 0x51c1e960UL, 0xd4d7a665UL, 0xe3bd6464UL, 0xba032266UL,\r
+ 0x8d69e067UL, 0x20cbd748UL, 0x17a11549UL, 0x4e1f534bUL, 0x7975914aUL,\r
+ 0xfc63de4fUL, 0xcb091c4eUL, 0x92b75a4cUL, 0xa5dd984dUL, 0x989ac446UL,\r
+ 0xaff00647UL, 0xf64e4045UL, 0xc1248244UL, 0x4432cd41UL, 0x73580f40UL,\r
+ 0x2ae64942UL, 0x1d8c8b43UL, 0x5068f154UL, 0x67023355UL, 0x3ebc7557UL,\r
+ 0x09d6b756UL, 0x8cc0f853UL, 0xbbaa3a52UL, 0xe2147c50UL, 0xd57ebe51UL,\r
+ 0xe839e25aUL, 0xdf53205bUL, 0x86ed6659UL, 0xb187a458UL, 0x3491eb5dUL,\r
+ 0x03fb295cUL, 0x5a456f5eUL, 0x6d2fad5fUL, 0x801b35e1UL, 0xb771f7e0UL,\r
+ 0xeecfb1e2UL, 0xd9a573e3UL, 0x5cb33ce6UL, 0x6bd9fee7UL, 0x3267b8e5UL,\r
+ 0x050d7ae4UL, 0x384a26efUL, 0x0f20e4eeUL, 0x569ea2ecUL, 0x61f460edUL,\r
+ 0xe4e22fe8UL, 0xd388ede9UL, 0x8a36abebUL, 0xbd5c69eaUL, 0xf0b813fdUL,\r
+ 0xc7d2d1fcUL, 0x9e6c97feUL, 0xa90655ffUL, 0x2c101afaUL, 0x1b7ad8fbUL,\r
+ 0x42c49ef9UL, 0x75ae5cf8UL, 0x48e900f3UL, 0x7f83c2f2UL, 0x263d84f0UL,\r
+ 0x115746f1UL, 0x944109f4UL, 0xa32bcbf5UL, 0xfa958df7UL, 0xcdff4ff6UL,\r
+ 0x605d78d9UL, 0x5737bad8UL, 0x0e89fcdaUL, 0x39e33edbUL, 0xbcf571deUL,\r
+ 0x8b9fb3dfUL, 0xd221f5ddUL, 0xe54b37dcUL, 0xd80c6bd7UL, 0xef66a9d6UL,\r
+ 0xb6d8efd4UL, 0x81b22dd5UL, 0x04a462d0UL, 0x33cea0d1UL, 0x6a70e6d3UL,\r
+ 0x5d1a24d2UL, 0x10fe5ec5UL, 0x27949cc4UL, 0x7e2adac6UL, 0x494018c7UL,\r
+ 0xcc5657c2UL, 0xfb3c95c3UL, 0xa282d3c1UL, 0x95e811c0UL, 0xa8af4dcbUL,\r
+ 0x9fc58fcaUL, 0xc67bc9c8UL, 0xf1110bc9UL, 0x740744ccUL, 0x436d86cdUL,\r
+ 0x1ad3c0cfUL, 0x2db902ceUL, 0x4096af91UL, 0x77fc6d90UL, 0x2e422b92UL,\r
+ 0x1928e993UL, 0x9c3ea696UL, 0xab546497UL, 0xf2ea2295UL, 0xc580e094UL,\r
+ 0xf8c7bc9fUL, 0xcfad7e9eUL, 0x9613389cUL, 0xa179fa9dUL, 0x246fb598UL,\r
+ 0x13057799UL, 0x4abb319bUL, 0x7dd1f39aUL, 0x3035898dUL, 0x075f4b8cUL,\r
+ 0x5ee10d8eUL, 0x698bcf8fUL, 0xec9d808aUL, 0xdbf7428bUL, 0x82490489UL,\r
+ 0xb523c688UL, 0x88649a83UL, 0xbf0e5882UL, 0xe6b01e80UL, 0xd1dadc81UL,\r
+ 0x54cc9384UL, 0x63a65185UL, 0x3a181787UL, 0x0d72d586UL, 0xa0d0e2a9UL,\r
+ 0x97ba20a8UL, 0xce0466aaUL, 0xf96ea4abUL, 0x7c78ebaeUL, 0x4b1229afUL,\r
+ 0x12ac6fadUL, 0x25c6adacUL, 0x1881f1a7UL, 0x2feb33a6UL, 0x765575a4UL,\r
+ 0x413fb7a5UL, 0xc429f8a0UL, 0xf3433aa1UL, 0xaafd7ca3UL, 0x9d97bea2UL,\r
+ 0xd073c4b5UL, 0xe71906b4UL, 0xbea740b6UL, 0x89cd82b7UL, 0x0cdbcdb2UL,\r
+ 0x3bb10fb3UL, 0x620f49b1UL, 0x55658bb0UL, 0x6822d7bbUL, 0x5f4815baUL,\r
+ 0x06f653b8UL, 0x319c91b9UL, 0xb48adebcUL, 0x83e01cbdUL, 0xda5e5abfUL,\r
+ 0xed3498beUL\r
+ },\r
+ {\r
+ 0x00000000UL, 0x6567bcb8UL, 0x8bc809aaUL, 0xeeafb512UL, 0x5797628fUL,\r
+ 0x32f0de37UL, 0xdc5f6b25UL, 0xb938d79dUL, 0xef28b4c5UL, 0x8a4f087dUL,\r
+ 0x64e0bd6fUL, 0x018701d7UL, 0xb8bfd64aUL, 0xddd86af2UL, 0x3377dfe0UL,\r
+ 0x56106358UL, 0x9f571950UL, 0xfa30a5e8UL, 0x149f10faUL, 0x71f8ac42UL,\r
+ 0xc8c07bdfUL, 0xada7c767UL, 0x43087275UL, 0x266fcecdUL, 0x707fad95UL,\r
+ 0x1518112dUL, 0xfbb7a43fUL, 0x9ed01887UL, 0x27e8cf1aUL, 0x428f73a2UL,\r
+ 0xac20c6b0UL, 0xc9477a08UL, 0x3eaf32a0UL, 0x5bc88e18UL, 0xb5673b0aUL,\r
+ 0xd00087b2UL, 0x6938502fUL, 0x0c5fec97UL, 0xe2f05985UL, 0x8797e53dUL,\r
+ 0xd1878665UL, 0xb4e03addUL, 0x5a4f8fcfUL, 0x3f283377UL, 0x8610e4eaUL,\r
+ 0xe3775852UL, 0x0dd8ed40UL, 0x68bf51f8UL, 0xa1f82bf0UL, 0xc49f9748UL,\r
+ 0x2a30225aUL, 0x4f579ee2UL, 0xf66f497fUL, 0x9308f5c7UL, 0x7da740d5UL,\r
+ 0x18c0fc6dUL, 0x4ed09f35UL, 0x2bb7238dUL, 0xc518969fUL, 0xa07f2a27UL,\r
+ 0x1947fdbaUL, 0x7c204102UL, 0x928ff410UL, 0xf7e848a8UL, 0x3d58149bUL,\r
+ 0x583fa823UL, 0xb6901d31UL, 0xd3f7a189UL, 0x6acf7614UL, 0x0fa8caacUL,\r
+ 0xe1077fbeUL, 0x8460c306UL, 0xd270a05eUL, 0xb7171ce6UL, 0x59b8a9f4UL,\r
+ 0x3cdf154cUL, 0x85e7c2d1UL, 0xe0807e69UL, 0x0e2fcb7bUL, 0x6b4877c3UL,\r
+ 0xa20f0dcbUL, 0xc768b173UL, 0x29c70461UL, 0x4ca0b8d9UL, 0xf5986f44UL,\r
+ 0x90ffd3fcUL, 0x7e5066eeUL, 0x1b37da56UL, 0x4d27b90eUL, 0x284005b6UL,\r
+ 0xc6efb0a4UL, 0xa3880c1cUL, 0x1ab0db81UL, 0x7fd76739UL, 0x9178d22bUL,\r
+ 0xf41f6e93UL, 0x03f7263bUL, 0x66909a83UL, 0x883f2f91UL, 0xed589329UL,\r
+ 0x546044b4UL, 0x3107f80cUL, 0xdfa84d1eUL, 0xbacff1a6UL, 0xecdf92feUL,\r
+ 0x89b82e46UL, 0x67179b54UL, 0x027027ecUL, 0xbb48f071UL, 0xde2f4cc9UL,\r
+ 0x3080f9dbUL, 0x55e74563UL, 0x9ca03f6bUL, 0xf9c783d3UL, 0x176836c1UL,\r
+ 0x720f8a79UL, 0xcb375de4UL, 0xae50e15cUL, 0x40ff544eUL, 0x2598e8f6UL,\r
+ 0x73888baeUL, 0x16ef3716UL, 0xf8408204UL, 0x9d273ebcUL, 0x241fe921UL,\r
+ 0x41785599UL, 0xafd7e08bUL, 0xcab05c33UL, 0x3bb659edUL, 0x5ed1e555UL,\r
+ 0xb07e5047UL, 0xd519ecffUL, 0x6c213b62UL, 0x094687daUL, 0xe7e932c8UL,\r
+ 0x828e8e70UL, 0xd49eed28UL, 0xb1f95190UL, 0x5f56e482UL, 0x3a31583aUL,\r
+ 0x83098fa7UL, 0xe66e331fUL, 0x08c1860dUL, 0x6da63ab5UL, 0xa4e140bdUL,\r
+ 0xc186fc05UL, 0x2f294917UL, 0x4a4ef5afUL, 0xf3762232UL, 0x96119e8aUL,\r
+ 0x78be2b98UL, 0x1dd99720UL, 0x4bc9f478UL, 0x2eae48c0UL, 0xc001fdd2UL,\r
+ 0xa566416aUL, 0x1c5e96f7UL, 0x79392a4fUL, 0x97969f5dUL, 0xf2f123e5UL,\r
+ 0x05196b4dUL, 0x607ed7f5UL, 0x8ed162e7UL, 0xebb6de5fUL, 0x528e09c2UL,\r
+ 0x37e9b57aUL, 0xd9460068UL, 0xbc21bcd0UL, 0xea31df88UL, 0x8f566330UL,\r
+ 0x61f9d622UL, 0x049e6a9aUL, 0xbda6bd07UL, 0xd8c101bfUL, 0x366eb4adUL,\r
+ 0x53090815UL, 0x9a4e721dUL, 0xff29cea5UL, 0x11867bb7UL, 0x74e1c70fUL,\r
+ 0xcdd91092UL, 0xa8beac2aUL, 0x46111938UL, 0x2376a580UL, 0x7566c6d8UL,\r
+ 0x10017a60UL, 0xfeaecf72UL, 0x9bc973caUL, 0x22f1a457UL, 0x479618efUL,\r
+ 0xa939adfdUL, 0xcc5e1145UL, 0x06ee4d76UL, 0x6389f1ceUL, 0x8d2644dcUL,\r
+ 0xe841f864UL, 0x51792ff9UL, 0x341e9341UL, 0xdab12653UL, 0xbfd69aebUL,\r
+ 0xe9c6f9b3UL, 0x8ca1450bUL, 0x620ef019UL, 0x07694ca1UL, 0xbe519b3cUL,\r
+ 0xdb362784UL, 0x35999296UL, 0x50fe2e2eUL, 0x99b95426UL, 0xfcdee89eUL,\r
+ 0x12715d8cUL, 0x7716e134UL, 0xce2e36a9UL, 0xab498a11UL, 0x45e63f03UL,\r
+ 0x208183bbUL, 0x7691e0e3UL, 0x13f65c5bUL, 0xfd59e949UL, 0x983e55f1UL,\r
+ 0x2106826cUL, 0x44613ed4UL, 0xaace8bc6UL, 0xcfa9377eUL, 0x38417fd6UL,\r
+ 0x5d26c36eUL, 0xb389767cUL, 0xd6eecac4UL, 0x6fd61d59UL, 0x0ab1a1e1UL,\r
+ 0xe41e14f3UL, 0x8179a84bUL, 0xd769cb13UL, 0xb20e77abUL, 0x5ca1c2b9UL,\r
+ 0x39c67e01UL, 0x80fea99cUL, 0xe5991524UL, 0x0b36a036UL, 0x6e511c8eUL,\r
+ 0xa7166686UL, 0xc271da3eUL, 0x2cde6f2cUL, 0x49b9d394UL, 0xf0810409UL,\r
+ 0x95e6b8b1UL, 0x7b490da3UL, 0x1e2eb11bUL, 0x483ed243UL, 0x2d596efbUL,\r
+ 0xc3f6dbe9UL, 0xa6916751UL, 0x1fa9b0ccUL, 0x7ace0c74UL, 0x9461b966UL,\r
+ 0xf10605deUL\r
+#endif\r
+ }\r
+};\r
--- /dev/null
+/* deflate.c -- compress data using the deflation algorithm\r
+ * Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/*\r
+ * ALGORITHM\r
+ *\r
+ * The "deflation" process depends on being able to identify portions\r
+ * of the input text which are identical to earlier input (within a\r
+ * sliding window trailing behind the input currently being processed).\r
+ *\r
+ * The most straightforward technique turns out to be the fastest for\r
+ * most input files: try all possible matches and select the longest.\r
+ * The key feature of this algorithm is that insertions into the string\r
+ * dictionary are very simple and thus fast, and deletions are avoided\r
+ * completely. Insertions are performed at each input character, whereas\r
+ * string matches are performed only when the previous match ends. So it\r
+ * is preferable to spend more time in matches to allow very fast string\r
+ * insertions and avoid deletions. The matching algorithm for small\r
+ * strings is inspired from that of Rabin & Karp. A brute force approach\r
+ * is used to find longer strings when a small match has been found.\r
+ * A similar algorithm is used in comic (by Jan-Mark Wams) and freeze\r
+ * (by Leonid Broukhis).\r
+ * A previous version of this file used a more sophisticated algorithm\r
+ * (by Fiala and Greene) which is guaranteed to run in linear amortized\r
+ * time, but has a larger average cost, uses more memory and is patented.\r
+ * However the F&G algorithm may be faster for some highly redundant\r
+ * files if the parameter max_chain_length (described below) is too large.\r
+ *\r
+ * ACKNOWLEDGEMENTS\r
+ *\r
+ * The idea of lazy evaluation of matches is due to Jan-Mark Wams, and\r
+ * I found it in 'freeze' written by Leonid Broukhis.\r
+ * Thanks to many people for bug reports and testing.\r
+ *\r
+ * REFERENCES\r
+ *\r
+ * Deutsch, L.P.,"DEFLATE Compressed Data Format Specification".\r
+ * Available in http://www.ietf.org/rfc/rfc1951.txt\r
+ *\r
+ * A description of the Rabin and Karp algorithm is given in the book\r
+ * "Algorithms" by R. Sedgewick, Addison-Wesley, p252.\r
+ *\r
+ * Fiala,E.R., and Greene,D.H.\r
+ * Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595\r
+ *\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+#include "deflate.h"\r
+\r
+const char deflate_copyright[] =\r
+ " deflate 1.2.5 Copyright 1995-2010 Jean-loup Gailly and Mark Adler ";\r
+/*\r
+ If you use the zlib library in a product, an acknowledgment is welcome\r
+ in the documentation of your product. If for some reason you cannot\r
+ include such an acknowledgment, I would appreciate that you keep this\r
+ copyright string in the executable of your product.\r
+ */\r
+\r
+/* ===========================================================================\r
+ * Function prototypes.\r
+ */\r
+typedef enum {\r
+ need_more, /* block not completed, need more input or more output */\r
+ block_done, /* block flush performed */\r
+ finish_started, /* finish started, need only more output at next deflate */\r
+ finish_done /* finish done, accept no more input or output */\r
+} block_state;\r
+\r
+typedef block_state (*compress_func) OF((deflate_state *s, int flush));\r
+/* Compression function. Returns the block state after the call. */\r
+\r
+local void fill_window OF((deflate_state *s));\r
+local block_state deflate_stored OF((deflate_state *s, int flush));\r
+local block_state deflate_fast OF((deflate_state *s, int flush));\r
+#ifndef FASTEST\r
+local block_state deflate_slow OF((deflate_state *s, int flush));\r
+#endif\r
+local block_state deflate_rle OF((deflate_state *s, int flush));\r
+local block_state deflate_huff OF((deflate_state *s, int flush));\r
+local void lm_init OF((deflate_state *s));\r
+local void putShortMSB OF((deflate_state *s, uInt b));\r
+local void flush_pending OF((z_streamp strm));\r
+local int read_buf OF((z_streamp strm, Bytef *buf, unsigned size));\r
+#ifdef ASMV\r
+ void match_init OF((void)); /* asm code initialization */\r
+ uInt longest_match OF((deflate_state *s, IPos cur_match));\r
+#else\r
+local uInt longest_match OF((deflate_state *s, IPos cur_match));\r
+#endif\r
+\r
+#ifdef DEBUG\r
+local void check_match OF((deflate_state *s, IPos start, IPos match,\r
+ int length));\r
+#endif\r
+\r
+/* ===========================================================================\r
+ * Local data\r
+ */\r
+\r
+#define NIL 0\r
+/* Tail of hash chains */\r
+\r
+#ifndef TOO_FAR\r
+# define TOO_FAR 4096\r
+#endif\r
+/* Matches of length 3 are discarded if their distance exceeds TOO_FAR */\r
+\r
+/* Values for max_lazy_match, good_match and max_chain_length, depending on\r
+ * the desired pack level (0..9). The values given below have been tuned to\r
+ * exclude worst case performance for pathological files. Better values may be\r
+ * found for specific files.\r
+ */\r
+typedef struct config_s {\r
+ ush good_length; /* reduce lazy search above this match length */\r
+ ush max_lazy; /* do not perform lazy search above this match length */\r
+ ush nice_length; /* quit search above this match length */\r
+ ush max_chain;\r
+ compress_func func;\r
+} config;\r
+\r
+#ifdef FASTEST\r
+local const config configuration_table[2] = {\r
+/* good lazy nice chain */\r
+/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */\r
+/* 1 */ {4, 4, 8, 4, deflate_fast}}; /* max speed, no lazy matches */\r
+#else\r
+local const config configuration_table[10] = {\r
+/* good lazy nice chain */\r
+/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */\r
+/* 1 */ {4, 4, 8, 4, deflate_fast}, /* max speed, no lazy matches */\r
+/* 2 */ {4, 5, 16, 8, deflate_fast},\r
+/* 3 */ {4, 6, 32, 32, deflate_fast},\r
+\r
+/* 4 */ {4, 4, 16, 16, deflate_slow}, /* lazy matches */\r
+/* 5 */ {8, 16, 32, 32, deflate_slow},\r
+/* 6 */ {8, 16, 128, 128, deflate_slow},\r
+/* 7 */ {8, 32, 128, 256, deflate_slow},\r
+/* 8 */ {32, 128, 258, 1024, deflate_slow},\r
+/* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* max compression */\r
+#endif\r
+\r
+/* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4\r
+ * For deflate_fast() (levels <= 3) good is ignored and lazy has a different\r
+ * meaning.\r
+ */\r
+\r
+#define EQUAL 0\r
+/* result of memcmp for equal strings */\r
+\r
+#ifndef NO_DUMMY_DECL\r
+struct static_tree_desc_s {int dummy;}; /* for buggy compilers */\r
+#endif\r
+\r
+/* ===========================================================================\r
+ * Update a hash value with the given input byte\r
+ * IN assertion: all calls to to UPDATE_HASH are made with consecutive\r
+ * input characters, so that a running hash key can be computed from the\r
+ * previous key instead of complete recalculation each time.\r
+ */\r
+#define UPDATE_HASH(s,h,c) (h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask)\r
+\r
+\r
+/* ===========================================================================\r
+ * Insert string str in the dictionary and set match_head to the previous head\r
+ * of the hash chain (the most recent string with same hash key). Return\r
+ * the previous length of the hash chain.\r
+ * If this file is compiled with -DFASTEST, the compression level is forced\r
+ * to 1, and no hash chains are maintained.\r
+ * IN assertion: all calls to to INSERT_STRING are made with consecutive\r
+ * input characters and the first MIN_MATCH bytes of str are valid\r
+ * (except for the last MIN_MATCH-1 bytes of the input file).\r
+ */\r
+#ifdef FASTEST\r
+#define INSERT_STRING(s, str, match_head) \\r
+ (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \\r
+ match_head = s->head[s->ins_h], \\r
+ s->head[s->ins_h] = (Pos)(str))\r
+#else\r
+#define INSERT_STRING(s, str, match_head) \\r
+ (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \\r
+ match_head = s->prev[(str) & s->w_mask] = s->head[s->ins_h], \\r
+ s->head[s->ins_h] = (Pos)(str))\r
+#endif\r
+\r
+/* ===========================================================================\r
+ * Initialize the hash table (avoiding 64K overflow for 16 bit systems).\r
+ * prev[] will be initialized on the fly.\r
+ */\r
+#define CLEAR_HASH(s) \\r
+ s->head[s->hash_size-1] = NIL; \\r
+ zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head));\r
+\r
+/* ========================================================================= */\r
+int ZEXPORT deflateInit_(strm, level, version, stream_size)\r
+ z_streamp strm;\r
+ int level;\r
+ const char *version;\r
+ int stream_size;\r
+{\r
+ return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL,\r
+ Z_DEFAULT_STRATEGY, version, stream_size);\r
+ /* To do: ignore strm->next_in if we use it as window */\r
+}\r
+\r
+/* ========================================================================= */\r
+int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,\r
+ version, stream_size)\r
+ z_streamp strm;\r
+ int level;\r
+ int method;\r
+ int windowBits;\r
+ int memLevel;\r
+ int strategy;\r
+ const char *version;\r
+ int stream_size;\r
+{\r
+ deflate_state *s;\r
+ int wrap = 1;\r
+ static const char my_version[] = ZLIB_VERSION;\r
+\r
+ ushf *overlay;\r
+ /* We overlay pending_buf and d_buf+l_buf. This works since the average\r
+ * output size for (length,distance) codes is <= 24 bits.\r
+ */\r
+\r
+ if (version == Z_NULL || version[0] != my_version[0] ||\r
+ stream_size != sizeof(z_stream)) {\r
+ return Z_VERSION_ERROR;\r
+ }\r
+ if (strm == Z_NULL) return Z_STREAM_ERROR;\r
+\r
+ strm->msg = Z_NULL;\r
+ if (strm->zalloc == (alloc_func)0) {\r
+ strm->zalloc = zcalloc;\r
+ strm->opaque = (voidpf)0;\r
+ }\r
+ if (strm->zfree == (free_func)0) strm->zfree = zcfree;\r
+\r
+#ifdef FASTEST\r
+ if (level != 0) level = 1;\r
+#else\r
+ if (level == Z_DEFAULT_COMPRESSION) level = 6;\r
+#endif\r
+\r
+ if (windowBits < 0) { /* suppress zlib wrapper */\r
+ wrap = 0;\r
+ windowBits = -windowBits;\r
+ }\r
+#ifdef GZIP\r
+ else if (windowBits > 15) {\r
+ wrap = 2; /* write gzip wrapper instead */\r
+ windowBits -= 16;\r
+ }\r
+#endif\r
+ if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED ||\r
+ windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||\r
+ strategy < 0 || strategy > Z_FIXED) {\r
+ return Z_STREAM_ERROR;\r
+ }\r
+ if (windowBits == 8) windowBits = 9; /* until 256-byte window bug fixed */\r
+ s = (deflate_state *) ZALLOC(strm, 1, sizeof(deflate_state));\r
+ if (s == Z_NULL) return Z_MEM_ERROR;\r
+ strm->state = (struct internal_state FAR *)s;\r
+ s->strm = strm;\r
+\r
+ s->wrap = wrap;\r
+ s->gzhead = Z_NULL;\r
+ s->w_bits = windowBits;\r
+ s->w_size = 1 << s->w_bits;\r
+ s->w_mask = s->w_size - 1;\r
+\r
+ s->hash_bits = memLevel + 7;\r
+ s->hash_size = 1 << s->hash_bits;\r
+ s->hash_mask = s->hash_size - 1;\r
+ s->hash_shift = ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH);\r
+\r
+ s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte));\r
+ s->prev = (Posf *) ZALLOC(strm, s->w_size, sizeof(Pos));\r
+ s->head = (Posf *) ZALLOC(strm, s->hash_size, sizeof(Pos));\r
+\r
+ s->high_water = 0; /* nothing written to s->window yet */\r
+\r
+ s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */\r
+\r
+ overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);\r
+ s->pending_buf = (uchf *) overlay;\r
+ s->pending_buf_size = (ulg)s->lit_bufsize * (sizeof(ush)+2L);\r
+\r
+ if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||\r
+ s->pending_buf == Z_NULL) {\r
+ s->status = FINISH_STATE;\r
+ strm->msg = (char*)ERR_MSG(Z_MEM_ERROR);\r
+ deflateEnd (strm);\r
+ return Z_MEM_ERROR;\r
+ }\r
+ s->d_buf = overlay + s->lit_bufsize/sizeof(ush);\r
+ s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize;\r
+\r
+ s->level = level;\r
+ s->strategy = strategy;\r
+ s->method = (Byte)method;\r
+\r
+ return deflateReset(strm);\r
+}\r
+\r
+/* ========================================================================= */\r
+int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)\r
+ z_streamp strm;\r
+ const Bytef *dictionary;\r
+ uInt dictLength;\r
+{\r
+ deflate_state *s;\r
+ uInt length = dictLength;\r
+ uInt n;\r
+ IPos hash_head = 0;\r
+\r
+ if (strm == Z_NULL || strm->state == Z_NULL || dictionary == Z_NULL ||\r
+ strm->state->wrap == 2 ||\r
+ (strm->state->wrap == 1 && strm->state->status != INIT_STATE))\r
+ return Z_STREAM_ERROR;\r
+\r
+ s = strm->state;\r
+ if (s->wrap)\r
+ strm->adler = adler32(strm->adler, dictionary, dictLength);\r
+\r
+ if (length < MIN_MATCH) return Z_OK;\r
+ if (length > s->w_size) {\r
+ length = s->w_size;\r
+ dictionary += dictLength - length; /* use the tail of the dictionary */\r
+ }\r
+ zmemcpy(s->window, dictionary, length);\r
+ s->strstart = length;\r
+ s->block_start = (long)length;\r
+\r
+ /* Insert all strings in the hash table (except for the last two bytes).\r
+ * s->lookahead stays null, so s->ins_h will be recomputed at the next\r
+ * call of fill_window.\r
+ */\r
+ s->ins_h = s->window[0];\r
+ UPDATE_HASH(s, s->ins_h, s->window[1]);\r
+ for (n = 0; n <= length - MIN_MATCH; n++) {\r
+ INSERT_STRING(s, n, hash_head);\r
+ }\r
+ if (hash_head) hash_head = 0; /* to make compiler happy */\r
+ return Z_OK;\r
+}\r
+\r
+/* ========================================================================= */\r
+int ZEXPORT deflateReset (strm)\r
+ z_streamp strm;\r
+{\r
+ deflate_state *s;\r
+\r
+ if (strm == Z_NULL || strm->state == Z_NULL ||\r
+ strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0) {\r
+ return Z_STREAM_ERROR;\r
+ }\r
+\r
+ strm->total_in = strm->total_out = 0;\r
+ strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */\r
+ strm->data_type = Z_UNKNOWN;\r
+\r
+ s = (deflate_state *)strm->state;\r
+ s->pending = 0;\r
+ s->pending_out = s->pending_buf;\r
+\r
+ if (s->wrap < 0) {\r
+ s->wrap = -s->wrap; /* was made negative by deflate(..., Z_FINISH); */\r
+ }\r
+ s->status = s->wrap ? INIT_STATE : BUSY_STATE;\r
+ strm->adler =\r
+#ifdef GZIP\r
+ s->wrap == 2 ? crc32(0L, Z_NULL, 0) :\r
+#endif\r
+ adler32(0L, Z_NULL, 0);\r
+ s->last_flush = Z_NO_FLUSH;\r
+\r
+ _tr_init(s);\r
+ lm_init(s);\r
+\r
+ return Z_OK;\r
+}\r
+\r
+/* ========================================================================= */\r
+int ZEXPORT deflateSetHeader (strm, head)\r
+ z_streamp strm;\r
+ gz_headerp head;\r
+{\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+ if (strm->state->wrap != 2) return Z_STREAM_ERROR;\r
+ strm->state->gzhead = head;\r
+ return Z_OK;\r
+}\r
+\r
+/* ========================================================================= */\r
+int ZEXPORT deflatePrime (strm, bits, value)\r
+ z_streamp strm;\r
+ int bits;\r
+ int value;\r
+{\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+ strm->state->bi_valid = bits;\r
+ strm->state->bi_buf = (ush)(value & ((1 << bits) - 1));\r
+ return Z_OK;\r
+}\r
+\r
+/* ========================================================================= */\r
+int ZEXPORT deflateParams(strm, level, strategy)\r
+ z_streamp strm;\r
+ int level;\r
+ int strategy;\r
+{\r
+ deflate_state *s;\r
+ compress_func func;\r
+ int err = Z_OK;\r
+\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+ s = strm->state;\r
+\r
+#ifdef FASTEST\r
+ if (level != 0) level = 1;\r
+#else\r
+ if (level == Z_DEFAULT_COMPRESSION) level = 6;\r
+#endif\r
+ if (level < 0 || level > 9 || strategy < 0 || strategy > Z_FIXED) {\r
+ return Z_STREAM_ERROR;\r
+ }\r
+ func = configuration_table[s->level].func;\r
+\r
+ if ((strategy != s->strategy || func != configuration_table[level].func) &&\r
+ strm->total_in != 0) {\r
+ /* Flush the last buffer: */\r
+ err = deflate(strm, Z_BLOCK);\r
+ }\r
+ if (s->level != level) {\r
+ s->level = level;\r
+ s->max_lazy_match = configuration_table[level].max_lazy;\r
+ s->good_match = configuration_table[level].good_length;\r
+ s->nice_match = configuration_table[level].nice_length;\r
+ s->max_chain_length = configuration_table[level].max_chain;\r
+ }\r
+ s->strategy = strategy;\r
+ return err;\r
+}\r
+\r
+/* ========================================================================= */\r
+int ZEXPORT deflateTune(strm, good_length, max_lazy, nice_length, max_chain)\r
+ z_streamp strm;\r
+ int good_length;\r
+ int max_lazy;\r
+ int nice_length;\r
+ int max_chain;\r
+{\r
+ deflate_state *s;\r
+\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+ s = strm->state;\r
+ s->good_match = good_length;\r
+ s->max_lazy_match = max_lazy;\r
+ s->nice_match = nice_length;\r
+ s->max_chain_length = max_chain;\r
+ return Z_OK;\r
+}\r
+\r
+/* =========================================================================\r
+ * For the default windowBits of 15 and memLevel of 8, this function returns\r
+ * a close to exact, as well as small, upper bound on the compressed size.\r
+ * They are coded as constants here for a reason--if the #define's are\r
+ * changed, then this function needs to be changed as well. The return\r
+ * value for 15 and 8 only works for those exact settings.\r
+ *\r
+ * For any setting other than those defaults for windowBits and memLevel,\r
+ * the value returned is a conservative worst case for the maximum expansion\r
+ * resulting from using fixed blocks instead of stored blocks, which deflate\r
+ * can emit on compressed data for some combinations of the parameters.\r
+ *\r
+ * This function could be more sophisticated to provide closer upper bounds for\r
+ * every combination of windowBits and memLevel. But even the conservative\r
+ * upper bound of about 14% expansion does not seem onerous for output buffer\r
+ * allocation.\r
+ */\r
+uLong ZEXPORT deflateBound(strm, sourceLen)\r
+ z_streamp strm;\r
+ uLong sourceLen;\r
+{\r
+ deflate_state *s;\r
+ uLong complen, wraplen;\r
+ Bytef *str;\r
+\r
+ /* conservative upper bound for compressed data */\r
+ complen = sourceLen +\r
+ ((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 5;\r
+\r
+ /* if can't get parameters, return conservative bound plus zlib wrapper */\r
+ if (strm == Z_NULL || strm->state == Z_NULL)\r
+ return complen + 6;\r
+\r
+ /* compute wrapper length */\r
+ s = strm->state;\r
+ switch (s->wrap) {\r
+ case 0: /* raw deflate */\r
+ wraplen = 0;\r
+ break;\r
+ case 1: /* zlib wrapper */\r
+ wraplen = 6 + (s->strstart ? 4 : 0);\r
+ break;\r
+ case 2: /* gzip wrapper */\r
+ wraplen = 18;\r
+ if (s->gzhead != Z_NULL) { /* user-supplied gzip header */\r
+ if (s->gzhead->extra != Z_NULL)\r
+ wraplen += 2 + s->gzhead->extra_len;\r
+ str = s->gzhead->name;\r
+ if (str != Z_NULL)\r
+ do {\r
+ wraplen++;\r
+ } while (*str++);\r
+ str = s->gzhead->comment;\r
+ if (str != Z_NULL)\r
+ do {\r
+ wraplen++;\r
+ } while (*str++);\r
+ if (s->gzhead->hcrc)\r
+ wraplen += 2;\r
+ }\r
+ break;\r
+ default: /* for compiler happiness */\r
+ wraplen = 6;\r
+ }\r
+\r
+ /* if not default parameters, return conservative bound */\r
+ if (s->w_bits != 15 || s->hash_bits != 8 + 7)\r
+ return complen + wraplen;\r
+\r
+ /* default settings: return tight bound for that case */\r
+ return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +\r
+ (sourceLen >> 25) + 13 - 6 + wraplen;\r
+}\r
+\r
+/* =========================================================================\r
+ * Put a short in the pending buffer. The 16-bit value is put in MSB order.\r
+ * IN assertion: the stream state is correct and there is enough room in\r
+ * pending_buf.\r
+ */\r
+local void putShortMSB (s, b)\r
+ deflate_state *s;\r
+ uInt b;\r
+{\r
+ put_byte(s, (Byte)(b >> 8));\r
+ put_byte(s, (Byte)(b & 0xff));\r
+}\r
+\r
+/* =========================================================================\r
+ * Flush as much pending output as possible. All deflate() output goes\r
+ * through this function so some applications may wish to modify it\r
+ * to avoid allocating a large strm->next_out buffer and copying into it.\r
+ * (See also read_buf()).\r
+ */\r
+local void flush_pending(strm)\r
+ z_streamp strm;\r
+{\r
+ unsigned len = strm->state->pending;\r
+\r
+ if (len > strm->avail_out) len = strm->avail_out;\r
+ if (len == 0) return;\r
+\r
+ zmemcpy(strm->next_out, strm->state->pending_out, len);\r
+ strm->next_out += len;\r
+ strm->state->pending_out += len;\r
+ strm->total_out += len;\r
+ strm->avail_out -= len;\r
+ strm->state->pending -= len;\r
+ if (strm->state->pending == 0) {\r
+ strm->state->pending_out = strm->state->pending_buf;\r
+ }\r
+}\r
+\r
+/* ========================================================================= */\r
+int ZEXPORT deflate (strm, flush)\r
+ z_streamp strm;\r
+ int flush;\r
+{\r
+ int old_flush; /* value of flush param for previous deflate call */\r
+ deflate_state *s;\r
+\r
+ if (strm == Z_NULL || strm->state == Z_NULL ||\r
+ flush > Z_BLOCK || flush < 0) {\r
+ return Z_STREAM_ERROR;\r
+ }\r
+ s = strm->state;\r
+\r
+ if (strm->next_out == Z_NULL ||\r
+ (strm->next_in == Z_NULL && strm->avail_in != 0) ||\r
+ (s->status == FINISH_STATE && flush != Z_FINISH)) {\r
+ ERR_RETURN(strm, Z_STREAM_ERROR);\r
+ }\r
+ if (strm->avail_out == 0) ERR_RETURN(strm, Z_BUF_ERROR);\r
+\r
+ s->strm = strm; /* just in case */\r
+ old_flush = s->last_flush;\r
+ s->last_flush = flush;\r
+\r
+ /* Write the header */\r
+ if (s->status == INIT_STATE) {\r
+#ifdef GZIP\r
+ if (s->wrap == 2) {\r
+ strm->adler = crc32(0L, Z_NULL, 0);\r
+ put_byte(s, 31);\r
+ put_byte(s, 139);\r
+ put_byte(s, 8);\r
+ if (s->gzhead == Z_NULL) {\r
+ put_byte(s, 0);\r
+ put_byte(s, 0);\r
+ put_byte(s, 0);\r
+ put_byte(s, 0);\r
+ put_byte(s, 0);\r
+ put_byte(s, s->level == 9 ? 2 :\r
+ (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?\r
+ 4 : 0));\r
+ put_byte(s, OS_CODE);\r
+ s->status = BUSY_STATE;\r
+ }\r
+ else {\r
+ put_byte(s, (s->gzhead->text ? 1 : 0) +\r
+ (s->gzhead->hcrc ? 2 : 0) +\r
+ (s->gzhead->extra == Z_NULL ? 0 : 4) +\r
+ (s->gzhead->name == Z_NULL ? 0 : 8) +\r
+ (s->gzhead->comment == Z_NULL ? 0 : 16)\r
+ );\r
+ put_byte(s, (Byte)(s->gzhead->time & 0xff));\r
+ put_byte(s, (Byte)((s->gzhead->time >> 8) & 0xff));\r
+ put_byte(s, (Byte)((s->gzhead->time >> 16) & 0xff));\r
+ put_byte(s, (Byte)((s->gzhead->time >> 24) & 0xff));\r
+ put_byte(s, s->level == 9 ? 2 :\r
+ (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?\r
+ 4 : 0));\r
+ put_byte(s, s->gzhead->os & 0xff);\r
+ if (s->gzhead->extra != Z_NULL) {\r
+ put_byte(s, s->gzhead->extra_len & 0xff);\r
+ put_byte(s, (s->gzhead->extra_len >> 8) & 0xff);\r
+ }\r
+ if (s->gzhead->hcrc)\r
+ strm->adler = crc32(strm->adler, s->pending_buf,\r
+ s->pending);\r
+ s->gzindex = 0;\r
+ s->status = EXTRA_STATE;\r
+ }\r
+ }\r
+ else\r
+#endif\r
+ {\r
+ uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8;\r
+ uInt level_flags;\r
+\r
+ if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2)\r
+ level_flags = 0;\r
+ else if (s->level < 6)\r
+ level_flags = 1;\r
+ else if (s->level == 6)\r
+ level_flags = 2;\r
+ else\r
+ level_flags = 3;\r
+ header |= (level_flags << 6);\r
+ if (s->strstart != 0) header |= PRESET_DICT;\r
+ header += 31 - (header % 31);\r
+\r
+ s->status = BUSY_STATE;\r
+ putShortMSB(s, header);\r
+\r
+ /* Save the adler32 of the preset dictionary: */\r
+ if (s->strstart != 0) {\r
+ putShortMSB(s, (uInt)(strm->adler >> 16));\r
+ putShortMSB(s, (uInt)(strm->adler & 0xffff));\r
+ }\r
+ strm->adler = adler32(0L, Z_NULL, 0);\r
+ }\r
+ }\r
+#ifdef GZIP\r
+ if (s->status == EXTRA_STATE) {\r
+ if (s->gzhead->extra != Z_NULL) {\r
+ uInt beg = s->pending; /* start of bytes to update crc */\r
+\r
+ while (s->gzindex < (s->gzhead->extra_len & 0xffff)) {\r
+ if (s->pending == s->pending_buf_size) {\r
+ if (s->gzhead->hcrc && s->pending > beg)\r
+ strm->adler = crc32(strm->adler, s->pending_buf + beg,\r
+ s->pending - beg);\r
+ flush_pending(strm);\r
+ beg = s->pending;\r
+ if (s->pending == s->pending_buf_size)\r
+ break;\r
+ }\r
+ put_byte(s, s->gzhead->extra[s->gzindex]);\r
+ s->gzindex++;\r
+ }\r
+ if (s->gzhead->hcrc && s->pending > beg)\r
+ strm->adler = crc32(strm->adler, s->pending_buf + beg,\r
+ s->pending - beg);\r
+ if (s->gzindex == s->gzhead->extra_len) {\r
+ s->gzindex = 0;\r
+ s->status = NAME_STATE;\r
+ }\r
+ }\r
+ else\r
+ s->status = NAME_STATE;\r
+ }\r
+ if (s->status == NAME_STATE) {\r
+ if (s->gzhead->name != Z_NULL) {\r
+ uInt beg = s->pending; /* start of bytes to update crc */\r
+ int val;\r
+\r
+ do {\r
+ if (s->pending == s->pending_buf_size) {\r
+ if (s->gzhead->hcrc && s->pending > beg)\r
+ strm->adler = crc32(strm->adler, s->pending_buf + beg,\r
+ s->pending - beg);\r
+ flush_pending(strm);\r
+ beg = s->pending;\r
+ if (s->pending == s->pending_buf_size) {\r
+ val = 1;\r
+ break;\r
+ }\r
+ }\r
+ val = s->gzhead->name[s->gzindex++];\r
+ put_byte(s, val);\r
+ } while (val != 0);\r
+ if (s->gzhead->hcrc && s->pending > beg)\r
+ strm->adler = crc32(strm->adler, s->pending_buf + beg,\r
+ s->pending - beg);\r
+ if (val == 0) {\r
+ s->gzindex = 0;\r
+ s->status = COMMENT_STATE;\r
+ }\r
+ }\r
+ else\r
+ s->status = COMMENT_STATE;\r
+ }\r
+ if (s->status == COMMENT_STATE) {\r
+ if (s->gzhead->comment != Z_NULL) {\r
+ uInt beg = s->pending; /* start of bytes to update crc */\r
+ int val;\r
+\r
+ do {\r
+ if (s->pending == s->pending_buf_size) {\r
+ if (s->gzhead->hcrc && s->pending > beg)\r
+ strm->adler = crc32(strm->adler, s->pending_buf + beg,\r
+ s->pending - beg);\r
+ flush_pending(strm);\r
+ beg = s->pending;\r
+ if (s->pending == s->pending_buf_size) {\r
+ val = 1;\r
+ break;\r
+ }\r
+ }\r
+ val = s->gzhead->comment[s->gzindex++];\r
+ put_byte(s, val);\r
+ } while (val != 0);\r
+ if (s->gzhead->hcrc && s->pending > beg)\r
+ strm->adler = crc32(strm->adler, s->pending_buf + beg,\r
+ s->pending - beg);\r
+ if (val == 0)\r
+ s->status = HCRC_STATE;\r
+ }\r
+ else\r
+ s->status = HCRC_STATE;\r
+ }\r
+ if (s->status == HCRC_STATE) {\r
+ if (s->gzhead->hcrc) {\r
+ if (s->pending + 2 > s->pending_buf_size)\r
+ flush_pending(strm);\r
+ if (s->pending + 2 <= s->pending_buf_size) {\r
+ put_byte(s, (Byte)(strm->adler & 0xff));\r
+ put_byte(s, (Byte)((strm->adler >> 8) & 0xff));\r
+ strm->adler = crc32(0L, Z_NULL, 0);\r
+ s->status = BUSY_STATE;\r
+ }\r
+ }\r
+ else\r
+ s->status = BUSY_STATE;\r
+ }\r
+#endif\r
+\r
+ /* Flush as much pending output as possible */\r
+ if (s->pending != 0) {\r
+ flush_pending(strm);\r
+ if (strm->avail_out == 0) {\r
+ /* Since avail_out is 0, deflate will be called again with\r
+ * more output space, but possibly with both pending and\r
+ * avail_in equal to zero. There won't be anything to do,\r
+ * but this is not an error situation so make sure we\r
+ * return OK instead of BUF_ERROR at next call of deflate:\r
+ */\r
+ s->last_flush = -1;\r
+ return Z_OK;\r
+ }\r
+\r
+ /* Make sure there is something to do and avoid duplicate consecutive\r
+ * flushes. For repeated and useless calls with Z_FINISH, we keep\r
+ * returning Z_STREAM_END instead of Z_BUF_ERROR.\r
+ */\r
+ } else if (strm->avail_in == 0 && flush <= old_flush &&\r
+ flush != Z_FINISH) {\r
+ ERR_RETURN(strm, Z_BUF_ERROR);\r
+ }\r
+\r
+ /* User must not provide more input after the first FINISH: */\r
+ if (s->status == FINISH_STATE && strm->avail_in != 0) {\r
+ ERR_RETURN(strm, Z_BUF_ERROR);\r
+ }\r
+\r
+ /* Start a new block or continue the current one.\r
+ */\r
+ if (strm->avail_in != 0 || s->lookahead != 0 ||\r
+ (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) {\r
+ block_state bstate;\r
+\r
+ bstate = s->strategy == Z_HUFFMAN_ONLY ? deflate_huff(s, flush) :\r
+ (s->strategy == Z_RLE ? deflate_rle(s, flush) :\r
+ (*(configuration_table[s->level].func))(s, flush));\r
+\r
+ if (bstate == finish_started || bstate == finish_done) {\r
+ s->status = FINISH_STATE;\r
+ }\r
+ if (bstate == need_more || bstate == finish_started) {\r
+ if (strm->avail_out == 0) {\r
+ s->last_flush = -1; /* avoid BUF_ERROR next call, see above */\r
+ }\r
+ return Z_OK;\r
+ /* If flush != Z_NO_FLUSH && avail_out == 0, the next call\r
+ * of deflate should use the same flush parameter to make sure\r
+ * that the flush is complete. So we don't have to output an\r
+ * empty block here, this will be done at next call. This also\r
+ * ensures that for a very small output buffer, we emit at most\r
+ * one empty block.\r
+ */\r
+ }\r
+ if (bstate == block_done) {\r
+ if (flush == Z_PARTIAL_FLUSH) {\r
+ _tr_align(s);\r
+ } else if (flush != Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */\r
+ _tr_stored_block(s, (char*)0, 0L, 0);\r
+ /* For a full flush, this empty block will be recognized\r
+ * as a special marker by inflate_sync().\r
+ */\r
+ if (flush == Z_FULL_FLUSH) {\r
+ CLEAR_HASH(s); /* forget history */\r
+ if (s->lookahead == 0) {\r
+ s->strstart = 0;\r
+ s->block_start = 0L;\r
+ }\r
+ }\r
+ }\r
+ flush_pending(strm);\r
+ if (strm->avail_out == 0) {\r
+ s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */\r
+ return Z_OK;\r
+ }\r
+ }\r
+ }\r
+ Assert(strm->avail_out > 0, "bug2");\r
+\r
+ if (flush != Z_FINISH) return Z_OK;\r
+ if (s->wrap <= 0) return Z_STREAM_END;\r
+\r
+ /* Write the trailer */\r
+#ifdef GZIP\r
+ if (s->wrap == 2) {\r
+ put_byte(s, (Byte)(strm->adler & 0xff));\r
+ put_byte(s, (Byte)((strm->adler >> 8) & 0xff));\r
+ put_byte(s, (Byte)((strm->adler >> 16) & 0xff));\r
+ put_byte(s, (Byte)((strm->adler >> 24) & 0xff));\r
+ put_byte(s, (Byte)(strm->total_in & 0xff));\r
+ put_byte(s, (Byte)((strm->total_in >> 8) & 0xff));\r
+ put_byte(s, (Byte)((strm->total_in >> 16) & 0xff));\r
+ put_byte(s, (Byte)((strm->total_in >> 24) & 0xff));\r
+ }\r
+ else\r
+#endif\r
+ {\r
+ putShortMSB(s, (uInt)(strm->adler >> 16));\r
+ putShortMSB(s, (uInt)(strm->adler & 0xffff));\r
+ }\r
+ flush_pending(strm);\r
+ /* If avail_out is zero, the application will call deflate again\r
+ * to flush the rest.\r
+ */\r
+ if (s->wrap > 0) s->wrap = -s->wrap; /* write the trailer only once! */\r
+ return s->pending != 0 ? Z_OK : Z_STREAM_END;\r
+}\r
+\r
+/* ========================================================================= */\r
+int ZEXPORT deflateEnd (strm)\r
+ z_streamp strm;\r
+{\r
+ int status;\r
+\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+\r
+ status = strm->state->status;\r
+ if (status != INIT_STATE &&\r
+ status != EXTRA_STATE &&\r
+ status != NAME_STATE &&\r
+ status != COMMENT_STATE &&\r
+ status != HCRC_STATE &&\r
+ status != BUSY_STATE &&\r
+ status != FINISH_STATE) {\r
+ return Z_STREAM_ERROR;\r
+ }\r
+\r
+ /* Deallocate in reverse order of allocations: */\r
+ TRY_FREE(strm, strm->state->pending_buf);\r
+ TRY_FREE(strm, strm->state->head);\r
+ TRY_FREE(strm, strm->state->prev);\r
+ TRY_FREE(strm, strm->state->window);\r
+\r
+ ZFREE(strm, strm->state);\r
+ strm->state = Z_NULL;\r
+\r
+ return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK;\r
+}\r
+\r
+/* =========================================================================\r
+ * Copy the source state to the destination state.\r
+ * To simplify the source, this is not supported for 16-bit MSDOS (which\r
+ * doesn't have enough memory anyway to duplicate compression states).\r
+ */\r
+int ZEXPORT deflateCopy (dest, source)\r
+ z_streamp dest;\r
+ z_streamp source;\r
+{\r
+#ifdef MAXSEG_64K\r
+ return Z_STREAM_ERROR;\r
+#else\r
+ deflate_state *ds;\r
+ deflate_state *ss;\r
+ ushf *overlay;\r
+\r
+\r
+ if (source == Z_NULL || dest == Z_NULL || source->state == Z_NULL) {\r
+ return Z_STREAM_ERROR;\r
+ }\r
+\r
+ ss = source->state;\r
+\r
+ zmemcpy(dest, source, sizeof(z_stream));\r
+\r
+ ds = (deflate_state *) ZALLOC(dest, 1, sizeof(deflate_state));\r
+ if (ds == Z_NULL) return Z_MEM_ERROR;\r
+ dest->state = (struct internal_state FAR *) ds;\r
+ zmemcpy(ds, ss, sizeof(deflate_state));\r
+ ds->strm = dest;\r
+\r
+ ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte));\r
+ ds->prev = (Posf *) ZALLOC(dest, ds->w_size, sizeof(Pos));\r
+ ds->head = (Posf *) ZALLOC(dest, ds->hash_size, sizeof(Pos));\r
+ overlay = (ushf *) ZALLOC(dest, ds->lit_bufsize, sizeof(ush)+2);\r
+ ds->pending_buf = (uchf *) overlay;\r
+\r
+ if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL ||\r
+ ds->pending_buf == Z_NULL) {\r
+ deflateEnd (dest);\r
+ return Z_MEM_ERROR;\r
+ }\r
+ /* following zmemcpy do not work for 16-bit MSDOS */\r
+ zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte));\r
+ zmemcpy(ds->prev, ss->prev, ds->w_size * sizeof(Pos));\r
+ zmemcpy(ds->head, ss->head, ds->hash_size * sizeof(Pos));\r
+ zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size);\r
+\r
+ ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf);\r
+ ds->d_buf = overlay + ds->lit_bufsize/sizeof(ush);\r
+ ds->l_buf = ds->pending_buf + (1+sizeof(ush))*ds->lit_bufsize;\r
+\r
+ ds->l_desc.dyn_tree = ds->dyn_ltree;\r
+ ds->d_desc.dyn_tree = ds->dyn_dtree;\r
+ ds->bl_desc.dyn_tree = ds->bl_tree;\r
+\r
+ return Z_OK;\r
+#endif /* MAXSEG_64K */\r
+}\r
+\r
+/* ===========================================================================\r
+ * Read a new buffer from the current input stream, update the adler32\r
+ * and total number of bytes read. All deflate() input goes through\r
+ * this function so some applications may wish to modify it to avoid\r
+ * allocating a large strm->next_in buffer and copying from it.\r
+ * (See also flush_pending()).\r
+ */\r
+local int read_buf(strm, buf, size)\r
+ z_streamp strm;\r
+ Bytef *buf;\r
+ unsigned size;\r
+{\r
+ unsigned len = strm->avail_in;\r
+\r
+ if (len > size) len = size;\r
+ if (len == 0) return 0;\r
+\r
+ strm->avail_in -= len;\r
+\r
+ if (strm->state->wrap == 1) {\r
+ strm->adler = adler32(strm->adler, strm->next_in, len);\r
+ }\r
+#ifdef GZIP\r
+ else if (strm->state->wrap == 2) {\r
+ strm->adler = crc32(strm->adler, strm->next_in, len);\r
+ }\r
+#endif\r
+ zmemcpy(buf, strm->next_in, len);\r
+ strm->next_in += len;\r
+ strm->total_in += len;\r
+\r
+ return (int)len;\r
+}\r
+\r
+/* ===========================================================================\r
+ * Initialize the "longest match" routines for a new zlib stream\r
+ */\r
+local void lm_init (s)\r
+ deflate_state *s;\r
+{\r
+ s->window_size = (ulg)2L*s->w_size;\r
+\r
+ CLEAR_HASH(s);\r
+\r
+ /* Set the default configuration parameters:\r
+ */\r
+ s->max_lazy_match = configuration_table[s->level].max_lazy;\r
+ s->good_match = configuration_table[s->level].good_length;\r
+ s->nice_match = configuration_table[s->level].nice_length;\r
+ s->max_chain_length = configuration_table[s->level].max_chain;\r
+\r
+ s->strstart = 0;\r
+ s->block_start = 0L;\r
+ s->lookahead = 0;\r
+ s->match_length = s->prev_length = MIN_MATCH-1;\r
+ s->match_available = 0;\r
+ s->ins_h = 0;\r
+#ifndef FASTEST\r
+#ifdef ASMV\r
+ match_init(); /* initialize the asm code */\r
+#endif\r
+#endif\r
+}\r
+\r
+#ifndef FASTEST\r
+/* ===========================================================================\r
+ * Set match_start to the longest match starting at the given string and\r
+ * return its length. Matches shorter or equal to prev_length are discarded,\r
+ * in which case the result is equal to prev_length and match_start is\r
+ * garbage.\r
+ * IN assertions: cur_match is the head of the hash chain for the current\r
+ * string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1\r
+ * OUT assertion: the match length is not greater than s->lookahead.\r
+ */\r
+#ifndef ASMV\r
+/* For 80x86 and 680x0, an optimized version will be provided in match.asm or\r
+ * match.S. The code will be functionally equivalent.\r
+ */\r
+local uInt longest_match(s, cur_match)\r
+ deflate_state *s;\r
+ IPos cur_match; /* current match */\r
+{\r
+ unsigned chain_length = s->max_chain_length;/* max hash chain length */\r
+ register Bytef *scan = s->window + s->strstart; /* current string */\r
+ register Bytef *match; /* matched string */\r
+ register int len; /* length of current match */\r
+ int best_len = s->prev_length; /* best match length so far */\r
+ int nice_match = s->nice_match; /* stop if match long enough */\r
+ IPos limit = s->strstart > (IPos)MAX_DIST(s) ?\r
+ s->strstart - (IPos)MAX_DIST(s) : NIL;\r
+ /* Stop when cur_match becomes <= limit. To simplify the code,\r
+ * we prevent matches with the string of window index 0.\r
+ */\r
+ Posf *prev = s->prev;\r
+ uInt wmask = s->w_mask;\r
+\r
+#ifdef UNALIGNED_OK\r
+ /* Compare two bytes at a time. Note: this is not always beneficial.\r
+ * Try with and without -DUNALIGNED_OK to check.\r
+ */\r
+ register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;\r
+ register ush scan_start = *(ushf*)scan;\r
+ register ush scan_end = *(ushf*)(scan+best_len-1);\r
+#else\r
+ register Bytef *strend = s->window + s->strstart + MAX_MATCH;\r
+ register Byte scan_end1 = scan[best_len-1];\r
+ register Byte scan_end = scan[best_len];\r
+#endif\r
+\r
+ /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.\r
+ * It is easy to get rid of this optimization if necessary.\r
+ */\r
+ Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");\r
+\r
+ /* Do not waste too much time if we already have a good match: */\r
+ if (s->prev_length >= s->good_match) {\r
+ chain_length >>= 2;\r
+ }\r
+ /* Do not look for matches beyond the end of the input. This is necessary\r
+ * to make deflate deterministic.\r
+ */\r
+ if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;\r
+\r
+ Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");\r
+\r
+ do {\r
+ Assert(cur_match < s->strstart, "no future");\r
+ match = s->window + cur_match;\r
+\r
+ /* Skip to next match if the match length cannot increase\r
+ * or if the match length is less than 2. Note that the checks below\r
+ * for insufficient lookahead only occur occasionally for performance\r
+ * reasons. Therefore uninitialized memory will be accessed, and\r
+ * conditional jumps will be made that depend on those values.\r
+ * However the length of the match is limited to the lookahead, so\r
+ * the output of deflate is not affected by the uninitialized values.\r
+ */\r
+#if (defined(UNALIGNED_OK) && MAX_MATCH == 258)\r
+ /* This code assumes sizeof(unsigned short) == 2. Do not use\r
+ * UNALIGNED_OK if your compiler uses a different size.\r
+ */\r
+ if (*(ushf*)(match+best_len-1) != scan_end ||\r
+ *(ushf*)match != scan_start) continue;\r
+\r
+ /* It is not necessary to compare scan[2] and match[2] since they are\r
+ * always equal when the other bytes match, given that the hash keys\r
+ * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at\r
+ * strstart+3, +5, ... up to strstart+257. We check for insufficient\r
+ * lookahead only every 4th comparison; the 128th check will be made\r
+ * at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is\r
+ * necessary to put more guard bytes at the end of the window, or\r
+ * to check more often for insufficient lookahead.\r
+ */\r
+ Assert(scan[2] == match[2], "scan[2]?");\r
+ scan++, match++;\r
+ do {\r
+ } while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) &&\r
+ *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&\r
+ *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&\r
+ *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&\r
+ scan < strend);\r
+ /* The funny "do {}" generates better code on most compilers */\r
+\r
+ /* Here, scan <= window+strstart+257 */\r
+ Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");\r
+ if (*scan == *match) scan++;\r
+\r
+ len = (MAX_MATCH - 1) - (int)(strend-scan);\r
+ scan = strend - (MAX_MATCH-1);\r
+\r
+#else /* UNALIGNED_OK */\r
+\r
+ if (match[best_len] != scan_end ||\r
+ match[best_len-1] != scan_end1 ||\r
+ *match != *scan ||\r
+ *++match != scan[1]) continue;\r
+\r
+ /* The check at best_len-1 can be removed because it will be made\r
+ * again later. (This heuristic is not always a win.)\r
+ * It is not necessary to compare scan[2] and match[2] since they\r
+ * are always equal when the other bytes match, given that\r
+ * the hash keys are equal and that HASH_BITS >= 8.\r
+ */\r
+ scan += 2, match++;\r
+ Assert(*scan == *match, "match[2]?");\r
+\r
+ /* We check for insufficient lookahead only every 8th comparison;\r
+ * the 256th check will be made at strstart+258.\r
+ */\r
+ do {\r
+ } while (*++scan == *++match && *++scan == *++match &&\r
+ *++scan == *++match && *++scan == *++match &&\r
+ *++scan == *++match && *++scan == *++match &&\r
+ *++scan == *++match && *++scan == *++match &&\r
+ scan < strend);\r
+\r
+ Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");\r
+\r
+ len = MAX_MATCH - (int)(strend - scan);\r
+ scan = strend - MAX_MATCH;\r
+\r
+#endif /* UNALIGNED_OK */\r
+\r
+ if (len > best_len) {\r
+ s->match_start = cur_match;\r
+ best_len = len;\r
+ if (len >= nice_match) break;\r
+#ifdef UNALIGNED_OK\r
+ scan_end = *(ushf*)(scan+best_len-1);\r
+#else\r
+ scan_end1 = scan[best_len-1];\r
+ scan_end = scan[best_len];\r
+#endif\r
+ }\r
+ } while ((cur_match = prev[cur_match & wmask]) > limit\r
+ && --chain_length != 0);\r
+\r
+ if ((uInt)best_len <= s->lookahead) return (uInt)best_len;\r
+ return s->lookahead;\r
+}\r
+#endif /* ASMV */\r
+\r
+#else /* FASTEST */\r
+\r
+/* ---------------------------------------------------------------------------\r
+ * Optimized version for FASTEST only\r
+ */\r
+local uInt longest_match(s, cur_match)\r
+ deflate_state *s;\r
+ IPos cur_match; /* current match */\r
+{\r
+ register Bytef *scan = s->window + s->strstart; /* current string */\r
+ register Bytef *match; /* matched string */\r
+ register int len; /* length of current match */\r
+ register Bytef *strend = s->window + s->strstart + MAX_MATCH;\r
+\r
+ /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.\r
+ * It is easy to get rid of this optimization if necessary.\r
+ */\r
+ Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");\r
+\r
+ Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");\r
+\r
+ Assert(cur_match < s->strstart, "no future");\r
+\r
+ match = s->window + cur_match;\r
+\r
+ /* Return failure if the match length is less than 2:\r
+ */\r
+ if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1;\r
+\r
+ /* The check at best_len-1 can be removed because it will be made\r
+ * again later. (This heuristic is not always a win.)\r
+ * It is not necessary to compare scan[2] and match[2] since they\r
+ * are always equal when the other bytes match, given that\r
+ * the hash keys are equal and that HASH_BITS >= 8.\r
+ */\r
+ scan += 2, match += 2;\r
+ Assert(*scan == *match, "match[2]?");\r
+\r
+ /* We check for insufficient lookahead only every 8th comparison;\r
+ * the 256th check will be made at strstart+258.\r
+ */\r
+ do {\r
+ } while (*++scan == *++match && *++scan == *++match &&\r
+ *++scan == *++match && *++scan == *++match &&\r
+ *++scan == *++match && *++scan == *++match &&\r
+ *++scan == *++match && *++scan == *++match &&\r
+ scan < strend);\r
+\r
+ Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");\r
+\r
+ len = MAX_MATCH - (int)(strend - scan);\r
+\r
+ if (len < MIN_MATCH) return MIN_MATCH - 1;\r
+\r
+ s->match_start = cur_match;\r
+ return (uInt)len <= s->lookahead ? (uInt)len : s->lookahead;\r
+}\r
+\r
+#endif /* FASTEST */\r
+\r
+#ifdef DEBUG\r
+/* ===========================================================================\r
+ * Check that the match at match_start is indeed a match.\r
+ */\r
+local void check_match(s, start, match, length)\r
+ deflate_state *s;\r
+ IPos start, match;\r
+ int length;\r
+{\r
+ /* check that the match is indeed a match */\r
+ if (zmemcmp(s->window + match,\r
+ s->window + start, length) != EQUAL) {\r
+ fprintf(stderr, " start %u, match %u, length %d\n",\r
+ start, match, length);\r
+ do {\r
+ fprintf(stderr, "%c%c", s->window[match++], s->window[start++]);\r
+ } while (--length != 0);\r
+ z_error("invalid match");\r
+ }\r
+ if (z_verbose > 1) {\r
+ fprintf(stderr,"\\[%d,%d]", start-match, length);\r
+ do { putc(s->window[start++], stderr); } while (--length != 0);\r
+ }\r
+}\r
+#else\r
+# define check_match(s, start, match, length)\r
+#endif /* DEBUG */\r
+\r
+/* ===========================================================================\r
+ * Fill the window when the lookahead becomes insufficient.\r
+ * Updates strstart and lookahead.\r
+ *\r
+ * IN assertion: lookahead < MIN_LOOKAHEAD\r
+ * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD\r
+ * At least one byte has been read, or avail_in == 0; reads are\r
+ * performed for at least two bytes (required for the zip translate_eol\r
+ * option -- not supported here).\r
+ */\r
+local void fill_window(s)\r
+ deflate_state *s;\r
+{\r
+ register unsigned n, m;\r
+ register Posf *p;\r
+ unsigned more; /* Amount of free space at the end of the window. */\r
+ uInt wsize = s->w_size;\r
+\r
+ do {\r
+ more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);\r
+\r
+ /* Deal with !@#$% 64K limit: */\r
+ if (sizeof(int) <= 2) {\r
+ if (more == 0 && s->strstart == 0 && s->lookahead == 0) {\r
+ more = wsize;\r
+\r
+ } else if (more == (unsigned)(-1)) {\r
+ /* Very unlikely, but possible on 16 bit machine if\r
+ * strstart == 0 && lookahead == 1 (input done a byte at time)\r
+ */\r
+ more--;\r
+ }\r
+ }\r
+\r
+ /* If the window is almost full and there is insufficient lookahead,\r
+ * move the upper half to the lower one to make room in the upper half.\r
+ */\r
+ if (s->strstart >= wsize+MAX_DIST(s)) {\r
+\r
+ zmemcpy(s->window, s->window+wsize, (unsigned)wsize);\r
+ s->match_start -= wsize;\r
+ s->strstart -= wsize; /* we now have strstart >= MAX_DIST */\r
+ s->block_start -= (long) wsize;\r
+\r
+ /* Slide the hash table (could be avoided with 32 bit values\r
+ at the expense of memory usage). We slide even when level == 0\r
+ to keep the hash table consistent if we switch back to level > 0\r
+ later. (Using level 0 permanently is not an optimal usage of\r
+ zlib, so we don't care about this pathological case.)\r
+ */\r
+ n = s->hash_size;\r
+ p = &s->head[n];\r
+ do {\r
+ m = *--p;\r
+ *p = (Pos)(m >= wsize ? m-wsize : NIL);\r
+ } while (--n);\r
+\r
+ n = wsize;\r
+#ifndef FASTEST\r
+ p = &s->prev[n];\r
+ do {\r
+ m = *--p;\r
+ *p = (Pos)(m >= wsize ? m-wsize : NIL);\r
+ /* If n is not on any hash chain, prev[n] is garbage but\r
+ * its value will never be used.\r
+ */\r
+ } while (--n);\r
+#endif\r
+ more += wsize;\r
+ }\r
+ if (s->strm->avail_in == 0) return;\r
+\r
+ /* If there was no sliding:\r
+ * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&\r
+ * more == window_size - lookahead - strstart\r
+ * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)\r
+ * => more >= window_size - 2*WSIZE + 2\r
+ * In the BIG_MEM or MMAP case (not yet supported),\r
+ * window_size == input_size + MIN_LOOKAHEAD &&\r
+ * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.\r
+ * Otherwise, window_size == 2*WSIZE so more >= 2.\r
+ * If there was sliding, more >= WSIZE. So in all cases, more >= 2.\r
+ */\r
+ Assert(more >= 2, "more < 2");\r
+\r
+ n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more);\r
+ s->lookahead += n;\r
+\r
+ /* Initialize the hash value now that we have some input: */\r
+ if (s->lookahead >= MIN_MATCH) {\r
+ s->ins_h = s->window[s->strstart];\r
+ UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);\r
+#if MIN_MATCH != 3\r
+ Call UPDATE_HASH() MIN_MATCH-3 more times\r
+#endif\r
+ }\r
+ /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,\r
+ * but this is not important since only literal bytes will be emitted.\r
+ */\r
+\r
+ } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);\r
+\r
+ /* If the WIN_INIT bytes after the end of the current data have never been\r
+ * written, then zero those bytes in order to avoid memory check reports of\r
+ * the use of uninitialized (or uninitialised as Julian writes) bytes by\r
+ * the longest match routines. Update the high water mark for the next\r
+ * time through here. WIN_INIT is set to MAX_MATCH since the longest match\r
+ * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.\r
+ */\r
+ if (s->high_water < s->window_size) {\r
+ ulg curr = s->strstart + (ulg)(s->lookahead);\r
+ ulg init;\r
+\r
+ if (s->high_water < curr) {\r
+ /* Previous high water mark below current data -- zero WIN_INIT\r
+ * bytes or up to end of window, whichever is less.\r
+ */\r
+ init = s->window_size - curr;\r
+ if (init > WIN_INIT)\r
+ init = WIN_INIT;\r
+ zmemzero(s->window + curr, (unsigned)init);\r
+ s->high_water = curr + init;\r
+ }\r
+ else if (s->high_water < (ulg)curr + WIN_INIT) {\r
+ /* High water mark at or above current data, but below current data\r
+ * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up\r
+ * to end of window, whichever is less.\r
+ */\r
+ init = (ulg)curr + WIN_INIT - s->high_water;\r
+ if (init > s->window_size - s->high_water)\r
+ init = s->window_size - s->high_water;\r
+ zmemzero(s->window + s->high_water, (unsigned)init);\r
+ s->high_water += init;\r
+ }\r
+ }\r
+}\r
+\r
+/* ===========================================================================\r
+ * Flush the current block, with given end-of-file flag.\r
+ * IN assertion: strstart is set to the end of the current match.\r
+ */\r
+#define FLUSH_BLOCK_ONLY(s, last) { \\r
+ _tr_flush_block(s, (s->block_start >= 0L ? \\r
+ (charf *)&s->window[(unsigned)s->block_start] : \\r
+ (charf *)Z_NULL), \\r
+ (ulg)((long)s->strstart - s->block_start), \\r
+ (last)); \\r
+ s->block_start = s->strstart; \\r
+ flush_pending(s->strm); \\r
+ Tracev((stderr,"[FLUSH]")); \\r
+}\r
+\r
+/* Same but force premature exit if necessary. */\r
+#define FLUSH_BLOCK(s, last) { \\r
+ FLUSH_BLOCK_ONLY(s, last); \\r
+ if (s->strm->avail_out == 0) return (last) ? finish_started : need_more; \\r
+}\r
+\r
+/* ===========================================================================\r
+ * Copy without compression as much as possible from the input stream, return\r
+ * the current block state.\r
+ * This function does not insert new strings in the dictionary since\r
+ * uncompressible data is probably not useful. This function is used\r
+ * only for the level=0 compression option.\r
+ * NOTE: this function should be optimized to avoid extra copying from\r
+ * window to pending_buf.\r
+ */\r
+local block_state deflate_stored(s, flush)\r
+ deflate_state *s;\r
+ int flush;\r
+{\r
+ /* Stored blocks are limited to 0xffff bytes, pending_buf is limited\r
+ * to pending_buf_size, and each stored block has a 5 byte header:\r
+ */\r
+ ulg max_block_size = 0xffff;\r
+ ulg max_start;\r
+\r
+ if (max_block_size > s->pending_buf_size - 5) {\r
+ max_block_size = s->pending_buf_size - 5;\r
+ }\r
+\r
+ /* Copy as much as possible from input to output: */\r
+ for (;;) {\r
+ /* Fill the window as much as possible: */\r
+ if (s->lookahead <= 1) {\r
+\r
+ Assert(s->strstart < s->w_size+MAX_DIST(s) ||\r
+ s->block_start >= (long)s->w_size, "slide too late");\r
+\r
+ fill_window(s);\r
+ if (s->lookahead == 0 && flush == Z_NO_FLUSH) return need_more;\r
+\r
+ if (s->lookahead == 0) break; /* flush the current block */\r
+ }\r
+ Assert(s->block_start >= 0L, "block gone");\r
+\r
+ s->strstart += s->lookahead;\r
+ s->lookahead = 0;\r
+\r
+ /* Emit a stored block if pending_buf will be full: */\r
+ max_start = s->block_start + max_block_size;\r
+ if (s->strstart == 0 || (ulg)s->strstart >= max_start) {\r
+ /* strstart == 0 is possible when wraparound on 16-bit machine */\r
+ s->lookahead = (uInt)(s->strstart - max_start);\r
+ s->strstart = (uInt)max_start;\r
+ FLUSH_BLOCK(s, 0);\r
+ }\r
+ /* Flush if we may have to slide, otherwise block_start may become\r
+ * negative and the data will be gone:\r
+ */\r
+ if (s->strstart - (uInt)s->block_start >= MAX_DIST(s)) {\r
+ FLUSH_BLOCK(s, 0);\r
+ }\r
+ }\r
+ FLUSH_BLOCK(s, flush == Z_FINISH);\r
+ return flush == Z_FINISH ? finish_done : block_done;\r
+}\r
+\r
+/* ===========================================================================\r
+ * Compress as much as possible from the input stream, return the current\r
+ * block state.\r
+ * This function does not perform lazy evaluation of matches and inserts\r
+ * new strings in the dictionary only for unmatched strings or for short\r
+ * matches. It is used only for the fast compression options.\r
+ */\r
+local block_state deflate_fast(s, flush)\r
+ deflate_state *s;\r
+ int flush;\r
+{\r
+ IPos hash_head; /* head of the hash chain */\r
+ int bflush; /* set if current block must be flushed */\r
+\r
+ for (;;) {\r
+ /* Make sure that we always have enough lookahead, except\r
+ * at the end of the input file. We need MAX_MATCH bytes\r
+ * for the next match, plus MIN_MATCH bytes to insert the\r
+ * string following the next match.\r
+ */\r
+ if (s->lookahead < MIN_LOOKAHEAD) {\r
+ fill_window(s);\r
+ if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {\r
+ return need_more;\r
+ }\r
+ if (s->lookahead == 0) break; /* flush the current block */\r
+ }\r
+\r
+ /* Insert the string window[strstart .. strstart+2] in the\r
+ * dictionary, and set hash_head to the head of the hash chain:\r
+ */\r
+ hash_head = NIL;\r
+ if (s->lookahead >= MIN_MATCH) {\r
+ INSERT_STRING(s, s->strstart, hash_head);\r
+ }\r
+\r
+ /* Find the longest match, discarding those <= prev_length.\r
+ * At this point we have always match_length < MIN_MATCH\r
+ */\r
+ if (hash_head != NIL && s->strstart - hash_head <= MAX_DIST(s)) {\r
+ /* To simplify the code, we prevent matches with the string\r
+ * of window index 0 (in particular we have to avoid a match\r
+ * of the string with itself at the start of the input file).\r
+ */\r
+ s->match_length = longest_match (s, hash_head);\r
+ /* longest_match() sets match_start */\r
+ }\r
+ if (s->match_length >= MIN_MATCH) {\r
+ check_match(s, s->strstart, s->match_start, s->match_length);\r
+\r
+ _tr_tally_dist(s, s->strstart - s->match_start,\r
+ s->match_length - MIN_MATCH, bflush);\r
+\r
+ s->lookahead -= s->match_length;\r
+\r
+ /* Insert new strings in the hash table only if the match length\r
+ * is not too large. This saves time but degrades compression.\r
+ */\r
+#ifndef FASTEST\r
+ if (s->match_length <= s->max_insert_length &&\r
+ s->lookahead >= MIN_MATCH) {\r
+ s->match_length--; /* string at strstart already in table */\r
+ do {\r
+ s->strstart++;\r
+ INSERT_STRING(s, s->strstart, hash_head);\r
+ /* strstart never exceeds WSIZE-MAX_MATCH, so there are\r
+ * always MIN_MATCH bytes ahead.\r
+ */\r
+ } while (--s->match_length != 0);\r
+ s->strstart++;\r
+ } else\r
+#endif\r
+ {\r
+ s->strstart += s->match_length;\r
+ s->match_length = 0;\r
+ s->ins_h = s->window[s->strstart];\r
+ UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);\r
+#if MIN_MATCH != 3\r
+ Call UPDATE_HASH() MIN_MATCH-3 more times\r
+#endif\r
+ /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not\r
+ * matter since it will be recomputed at next deflate call.\r
+ */\r
+ }\r
+ } else {\r
+ /* No match, output a literal byte */\r
+ Tracevv((stderr,"%c", s->window[s->strstart]));\r
+ _tr_tally_lit (s, s->window[s->strstart], bflush);\r
+ s->lookahead--;\r
+ s->strstart++;\r
+ }\r
+ if (bflush) FLUSH_BLOCK(s, 0);\r
+ }\r
+ FLUSH_BLOCK(s, flush == Z_FINISH);\r
+ return flush == Z_FINISH ? finish_done : block_done;\r
+}\r
+\r
+#ifndef FASTEST\r
+/* ===========================================================================\r
+ * Same as above, but achieves better compression. We use a lazy\r
+ * evaluation for matches: a match is finally adopted only if there is\r
+ * no better match at the next window position.\r
+ */\r
+local block_state deflate_slow(s, flush)\r
+ deflate_state *s;\r
+ int flush;\r
+{\r
+ IPos hash_head; /* head of hash chain */\r
+ int bflush; /* set if current block must be flushed */\r
+\r
+ /* Process the input block. */\r
+ for (;;) {\r
+ /* Make sure that we always have enough lookahead, except\r
+ * at the end of the input file. We need MAX_MATCH bytes\r
+ * for the next match, plus MIN_MATCH bytes to insert the\r
+ * string following the next match.\r
+ */\r
+ if (s->lookahead < MIN_LOOKAHEAD) {\r
+ fill_window(s);\r
+ if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {\r
+ return need_more;\r
+ }\r
+ if (s->lookahead == 0) break; /* flush the current block */\r
+ }\r
+\r
+ /* Insert the string window[strstart .. strstart+2] in the\r
+ * dictionary, and set hash_head to the head of the hash chain:\r
+ */\r
+ hash_head = NIL;\r
+ if (s->lookahead >= MIN_MATCH) {\r
+ INSERT_STRING(s, s->strstart, hash_head);\r
+ }\r
+\r
+ /* Find the longest match, discarding those <= prev_length.\r
+ */\r
+ s->prev_length = s->match_length, s->prev_match = s->match_start;\r
+ s->match_length = MIN_MATCH-1;\r
+\r
+ if (hash_head != NIL && s->prev_length < s->max_lazy_match &&\r
+ s->strstart - hash_head <= MAX_DIST(s)) {\r
+ /* To simplify the code, we prevent matches with the string\r
+ * of window index 0 (in particular we have to avoid a match\r
+ * of the string with itself at the start of the input file).\r
+ */\r
+ s->match_length = longest_match (s, hash_head);\r
+ /* longest_match() sets match_start */\r
+\r
+ if (s->match_length <= 5 && (s->strategy == Z_FILTERED\r
+#if TOO_FAR <= 32767\r
+ || (s->match_length == MIN_MATCH &&\r
+ s->strstart - s->match_start > TOO_FAR)\r
+#endif\r
+ )) {\r
+\r
+ /* If prev_match is also MIN_MATCH, match_start is garbage\r
+ * but we will ignore the current match anyway.\r
+ */\r
+ s->match_length = MIN_MATCH-1;\r
+ }\r
+ }\r
+ /* If there was a match at the previous step and the current\r
+ * match is not better, output the previous match:\r
+ */\r
+ if (s->prev_length >= MIN_MATCH && s->match_length <= s->prev_length) {\r
+ uInt max_insert = s->strstart + s->lookahead - MIN_MATCH;\r
+ /* Do not insert strings in hash table beyond this. */\r
+\r
+ check_match(s, s->strstart-1, s->prev_match, s->prev_length);\r
+\r
+ _tr_tally_dist(s, s->strstart -1 - s->prev_match,\r
+ s->prev_length - MIN_MATCH, bflush);\r
+\r
+ /* Insert in hash table all strings up to the end of the match.\r
+ * strstart-1 and strstart are already inserted. If there is not\r
+ * enough lookahead, the last two strings are not inserted in\r
+ * the hash table.\r
+ */\r
+ s->lookahead -= s->prev_length-1;\r
+ s->prev_length -= 2;\r
+ do {\r
+ if (++s->strstart <= max_insert) {\r
+ INSERT_STRING(s, s->strstart, hash_head);\r
+ }\r
+ } while (--s->prev_length != 0);\r
+ s->match_available = 0;\r
+ s->match_length = MIN_MATCH-1;\r
+ s->strstart++;\r
+\r
+ if (bflush) FLUSH_BLOCK(s, 0);\r
+\r
+ } else if (s->match_available) {\r
+ /* If there was no match at the previous position, output a\r
+ * single literal. If there was a match but the current match\r
+ * is longer, truncate the previous match to a single literal.\r
+ */\r
+ Tracevv((stderr,"%c", s->window[s->strstart-1]));\r
+ _tr_tally_lit(s, s->window[s->strstart-1], bflush);\r
+ if (bflush) {\r
+ FLUSH_BLOCK_ONLY(s, 0);\r
+ }\r
+ s->strstart++;\r
+ s->lookahead--;\r
+ if (s->strm->avail_out == 0) return need_more;\r
+ } else {\r
+ /* There is no previous match to compare with, wait for\r
+ * the next step to decide.\r
+ */\r
+ s->match_available = 1;\r
+ s->strstart++;\r
+ s->lookahead--;\r
+ }\r
+ }\r
+ Assert (flush != Z_NO_FLUSH, "no flush?");\r
+ if (s->match_available) {\r
+ Tracevv((stderr,"%c", s->window[s->strstart-1]));\r
+ _tr_tally_lit(s, s->window[s->strstart-1], bflush);\r
+ s->match_available = 0;\r
+ }\r
+ FLUSH_BLOCK(s, flush == Z_FINISH);\r
+ return flush == Z_FINISH ? finish_done : block_done;\r
+}\r
+#endif /* FASTEST */\r
+\r
+/* ===========================================================================\r
+ * For Z_RLE, simply look for runs of bytes, generate matches only of distance\r
+ * one. Do not maintain a hash table. (It will be regenerated if this run of\r
+ * deflate switches away from Z_RLE.)\r
+ */\r
+local block_state deflate_rle(s, flush)\r
+ deflate_state *s;\r
+ int flush;\r
+{\r
+ int bflush; /* set if current block must be flushed */\r
+ uInt prev; /* byte at distance one to match */\r
+ Bytef *scan, *strend; /* scan goes up to strend for length of run */\r
+\r
+ for (;;) {\r
+ /* Make sure that we always have enough lookahead, except\r
+ * at the end of the input file. We need MAX_MATCH bytes\r
+ * for the longest encodable run.\r
+ */\r
+ if (s->lookahead < MAX_MATCH) {\r
+ fill_window(s);\r
+ if (s->lookahead < MAX_MATCH && flush == Z_NO_FLUSH) {\r
+ return need_more;\r
+ }\r
+ if (s->lookahead == 0) break; /* flush the current block */\r
+ }\r
+\r
+ /* See how many times the previous byte repeats */\r
+ s->match_length = 0;\r
+ if (s->lookahead >= MIN_MATCH && s->strstart > 0) {\r
+ scan = s->window + s->strstart - 1;\r
+ prev = *scan;\r
+ if (prev == *++scan && prev == *++scan && prev == *++scan) {\r
+ strend = s->window + s->strstart + MAX_MATCH;\r
+ do {\r
+ } while (prev == *++scan && prev == *++scan &&\r
+ prev == *++scan && prev == *++scan &&\r
+ prev == *++scan && prev == *++scan &&\r
+ prev == *++scan && prev == *++scan &&\r
+ scan < strend);\r
+ s->match_length = MAX_MATCH - (int)(strend - scan);\r
+ if (s->match_length > s->lookahead)\r
+ s->match_length = s->lookahead;\r
+ }\r
+ }\r
+\r
+ /* Emit match if have run of MIN_MATCH or longer, else emit literal */\r
+ if (s->match_length >= MIN_MATCH) {\r
+ check_match(s, s->strstart, s->strstart - 1, s->match_length);\r
+\r
+ _tr_tally_dist(s, 1, s->match_length - MIN_MATCH, bflush);\r
+\r
+ s->lookahead -= s->match_length;\r
+ s->strstart += s->match_length;\r
+ s->match_length = 0;\r
+ } else {\r
+ /* No match, output a literal byte */\r
+ Tracevv((stderr,"%c", s->window[s->strstart]));\r
+ _tr_tally_lit (s, s->window[s->strstart], bflush);\r
+ s->lookahead--;\r
+ s->strstart++;\r
+ }\r
+ if (bflush) FLUSH_BLOCK(s, 0);\r
+ }\r
+ FLUSH_BLOCK(s, flush == Z_FINISH);\r
+ return flush == Z_FINISH ? finish_done : block_done;\r
+}\r
+\r
+/* ===========================================================================\r
+ * For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table.\r
+ * (It will be regenerated if this run of deflate switches away from Huffman.)\r
+ */\r
+local block_state deflate_huff(s, flush)\r
+ deflate_state *s;\r
+ int flush;\r
+{\r
+ int bflush; /* set if current block must be flushed */\r
+\r
+ for (;;) {\r
+ /* Make sure that we have a literal to write. */\r
+ if (s->lookahead == 0) {\r
+ fill_window(s);\r
+ if (s->lookahead == 0) {\r
+ if (flush == Z_NO_FLUSH)\r
+ return need_more;\r
+ break; /* flush the current block */\r
+ }\r
+ }\r
+\r
+ /* Output a literal byte */\r
+ s->match_length = 0;\r
+ Tracevv((stderr,"%c", s->window[s->strstart]));\r
+ _tr_tally_lit (s, s->window[s->strstart], bflush);\r
+ s->lookahead--;\r
+ s->strstart++;\r
+ if (bflush) FLUSH_BLOCK(s, 0);\r
+ }\r
+ FLUSH_BLOCK(s, flush == Z_FINISH);\r
+ return flush == Z_FINISH ? finish_done : block_done;\r
+}\r
--- /dev/null
+/* deflate.h -- internal compression state\r
+ * Copyright (C) 1995-2010 Jean-loup Gailly\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/* WARNING: this file should *not* be used by applications. It is\r
+ part of the implementation of the compression library and is\r
+ subject to change. Applications should only use zlib.h.\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+#ifndef DEFLATE_H\r
+#define DEFLATE_H\r
+\r
+#include "zutil.h"\r
+\r
+/* define NO_GZIP when compiling if you want to disable gzip header and\r
+ trailer creation by deflate(). NO_GZIP would be used to avoid linking in\r
+ the crc code when it is not needed. For shared libraries, gzip encoding\r
+ should be left enabled. */\r
+#ifndef NO_GZIP\r
+# define GZIP\r
+#endif\r
+\r
+/* ===========================================================================\r
+ * Internal compression state.\r
+ */\r
+\r
+#define LENGTH_CODES 29\r
+/* number of length codes, not counting the special END_BLOCK code */\r
+\r
+#define LITERALS 256\r
+/* number of literal bytes 0..255 */\r
+\r
+#define L_CODES (LITERALS+1+LENGTH_CODES)\r
+/* number of Literal or Length codes, including the END_BLOCK code */\r
+\r
+#define D_CODES 30\r
+/* number of distance codes */\r
+\r
+#define BL_CODES 19\r
+/* number of codes used to transfer the bit lengths */\r
+\r
+#define HEAP_SIZE (2*L_CODES+1)\r
+/* maximum heap size */\r
+\r
+#define MAX_BITS 15\r
+/* All codes must not exceed MAX_BITS bits */\r
+\r
+#define INIT_STATE 42\r
+#define EXTRA_STATE 69\r
+#define NAME_STATE 73\r
+#define COMMENT_STATE 91\r
+#define HCRC_STATE 103\r
+#define BUSY_STATE 113\r
+#define FINISH_STATE 666\r
+/* Stream status */\r
+\r
+\r
+/* Data structure describing a single value and its code string. */\r
+typedef struct ct_data_s {\r
+ union {\r
+ ush freq; /* frequency count */\r
+ ush code; /* bit string */\r
+ } fc;\r
+ union {\r
+ ush dad; /* father node in Huffman tree */\r
+ ush len; /* length of bit string */\r
+ } dl;\r
+} FAR ct_data;\r
+\r
+#define Freq fc.freq\r
+#define Code fc.code\r
+#define Dad dl.dad\r
+#define Len dl.len\r
+\r
+typedef struct static_tree_desc_s static_tree_desc;\r
+\r
+typedef struct tree_desc_s {\r
+ ct_data *dyn_tree; /* the dynamic tree */\r
+ int max_code; /* largest code with non zero frequency */\r
+ static_tree_desc *stat_desc; /* the corresponding static tree */\r
+} FAR tree_desc;\r
+\r
+typedef ush Pos;\r
+typedef Pos FAR Posf;\r
+typedef unsigned IPos;\r
+\r
+/* A Pos is an index in the character window. We use short instead of int to\r
+ * save space in the various tables. IPos is used only for parameter passing.\r
+ */\r
+\r
+typedef struct internal_state {\r
+ z_streamp strm; /* pointer back to this zlib stream */\r
+ int status; /* as the name implies */\r
+ Bytef *pending_buf; /* output still pending */\r
+ ulg pending_buf_size; /* size of pending_buf */\r
+ Bytef *pending_out; /* next pending byte to output to the stream */\r
+ uInt pending; /* nb of bytes in the pending buffer */\r
+ int wrap; /* bit 0 true for zlib, bit 1 true for gzip */\r
+ gz_headerp gzhead; /* gzip header information to write */\r
+ uInt gzindex; /* where in extra, name, or comment */\r
+ Byte method; /* STORED (for zip only) or DEFLATED */\r
+ int last_flush; /* value of flush param for previous deflate call */\r
+\r
+ /* used by deflate.c: */\r
+\r
+ uInt w_size; /* LZ77 window size (32K by default) */\r
+ uInt w_bits; /* log2(w_size) (8..16) */\r
+ uInt w_mask; /* w_size - 1 */\r
+\r
+ Bytef *window;\r
+ /* Sliding window. Input bytes are read into the second half of the window,\r
+ * and move to the first half later to keep a dictionary of at least wSize\r
+ * bytes. With this organization, matches are limited to a distance of\r
+ * wSize-MAX_MATCH bytes, but this ensures that IO is always\r
+ * performed with a length multiple of the block size. Also, it limits\r
+ * the window size to 64K, which is quite useful on MSDOS.\r
+ * To do: use the user input buffer as sliding window.\r
+ */\r
+\r
+ ulg window_size;\r
+ /* Actual size of window: 2*wSize, except when the user input buffer\r
+ * is directly used as sliding window.\r
+ */\r
+\r
+ Posf *prev;\r
+ /* Link to older string with same hash index. To limit the size of this\r
+ * array to 64K, this link is maintained only for the last 32K strings.\r
+ * An index in this array is thus a window index modulo 32K.\r
+ */\r
+\r
+ Posf *head; /* Heads of the hash chains or NIL. */\r
+\r
+ uInt ins_h; /* hash index of string to be inserted */\r
+ uInt hash_size; /* number of elements in hash table */\r
+ uInt hash_bits; /* log2(hash_size) */\r
+ uInt hash_mask; /* hash_size-1 */\r
+\r
+ uInt hash_shift;\r
+ /* Number of bits by which ins_h must be shifted at each input\r
+ * step. It must be such that after MIN_MATCH steps, the oldest\r
+ * byte no longer takes part in the hash key, that is:\r
+ * hash_shift * MIN_MATCH >= hash_bits\r
+ */\r
+\r
+ long block_start;\r
+ /* Window position at the beginning of the current output block. Gets\r
+ * negative when the window is moved backwards.\r
+ */\r
+\r
+ uInt match_length; /* length of best match */\r
+ IPos prev_match; /* previous match */\r
+ int match_available; /* set if previous match exists */\r
+ uInt strstart; /* start of string to insert */\r
+ uInt match_start; /* start of matching string */\r
+ uInt lookahead; /* number of valid bytes ahead in window */\r
+\r
+ uInt prev_length;\r
+ /* Length of the best match at previous step. Matches not greater than this\r
+ * are discarded. This is used in the lazy match evaluation.\r
+ */\r
+\r
+ uInt max_chain_length;\r
+ /* To speed up deflation, hash chains are never searched beyond this\r
+ * length. A higher limit improves compression ratio but degrades the\r
+ * speed.\r
+ */\r
+\r
+ uInt max_lazy_match;\r
+ /* Attempt to find a better match only when the current match is strictly\r
+ * smaller than this value. This mechanism is used only for compression\r
+ * levels >= 4.\r
+ */\r
+# define max_insert_length max_lazy_match\r
+ /* Insert new strings in the hash table only if the match length is not\r
+ * greater than this length. This saves time but degrades compression.\r
+ * max_insert_length is used only for compression levels <= 3.\r
+ */\r
+\r
+ int level; /* compression level (1..9) */\r
+ int strategy; /* favor or force Huffman coding*/\r
+\r
+ uInt good_match;\r
+ /* Use a faster search when the previous match is longer than this */\r
+\r
+ int nice_match; /* Stop searching when current match exceeds this */\r
+\r
+ /* used by trees.c: */\r
+ /* Didn't use ct_data typedef below to supress compiler warning */\r
+ struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */\r
+ struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */\r
+ struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */\r
+\r
+ struct tree_desc_s l_desc; /* desc. for literal tree */\r
+ struct tree_desc_s d_desc; /* desc. for distance tree */\r
+ struct tree_desc_s bl_desc; /* desc. for bit length tree */\r
+\r
+ ush bl_count[MAX_BITS+1];\r
+ /* number of codes at each bit length for an optimal tree */\r
+\r
+ int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */\r
+ int heap_len; /* number of elements in the heap */\r
+ int heap_max; /* element of largest frequency */\r
+ /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.\r
+ * The same heap array is used to build all trees.\r
+ */\r
+\r
+ uch depth[2*L_CODES+1];\r
+ /* Depth of each subtree used as tie breaker for trees of equal frequency\r
+ */\r
+\r
+ uchf *l_buf; /* buffer for literals or lengths */\r
+\r
+ uInt lit_bufsize;\r
+ /* Size of match buffer for literals/lengths. There are 4 reasons for\r
+ * limiting lit_bufsize to 64K:\r
+ * - frequencies can be kept in 16 bit counters\r
+ * - if compression is not successful for the first block, all input\r
+ * data is still in the window so we can still emit a stored block even\r
+ * when input comes from standard input. (This can also be done for\r
+ * all blocks if lit_bufsize is not greater than 32K.)\r
+ * - if compression is not successful for a file smaller than 64K, we can\r
+ * even emit a stored file instead of a stored block (saving 5 bytes).\r
+ * This is applicable only for zip (not gzip or zlib).\r
+ * - creating new Huffman trees less frequently may not provide fast\r
+ * adaptation to changes in the input data statistics. (Take for\r
+ * example a binary file with poorly compressible code followed by\r
+ * a highly compressible string table.) Smaller buffer sizes give\r
+ * fast adaptation but have of course the overhead of transmitting\r
+ * trees more frequently.\r
+ * - I can't count above 4\r
+ */\r
+\r
+ uInt last_lit; /* running index in l_buf */\r
+\r
+ ushf *d_buf;\r
+ /* Buffer for distances. To simplify the code, d_buf and l_buf have\r
+ * the same number of elements. To use different lengths, an extra flag\r
+ * array would be necessary.\r
+ */\r
+\r
+ ulg opt_len; /* bit length of current block with optimal trees */\r
+ ulg static_len; /* bit length of current block with static trees */\r
+ uInt matches; /* number of string matches in current block */\r
+ int last_eob_len; /* bit length of EOB code for last block */\r
+\r
+#ifdef DEBUG\r
+ ulg compressed_len; /* total bit length of compressed file mod 2^32 */\r
+ ulg bits_sent; /* bit length of compressed data sent mod 2^32 */\r
+#endif\r
+\r
+ ush bi_buf;\r
+ /* Output buffer. bits are inserted starting at the bottom (least\r
+ * significant bits).\r
+ */\r
+ int bi_valid;\r
+ /* Number of valid bits in bi_buf. All bits above the last valid bit\r
+ * are always zero.\r
+ */\r
+\r
+ ulg high_water;\r
+ /* High water mark offset in window for initialized bytes -- bytes above\r
+ * this are set to zero in order to avoid memory check warnings when\r
+ * longest match routines access bytes past the input. This is then\r
+ * updated to the new high water mark.\r
+ */\r
+\r
+} FAR deflate_state;\r
+\r
+/* Output a byte on the stream.\r
+ * IN assertion: there is enough room in pending_buf.\r
+ */\r
+#define put_byte(s, c) {s->pending_buf[s->pending++] = (c);}\r
+\r
+\r
+#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)\r
+/* Minimum amount of lookahead, except at the end of the input file.\r
+ * See deflate.c for comments about the MIN_MATCH+1.\r
+ */\r
+\r
+#define MAX_DIST(s) ((s)->w_size-MIN_LOOKAHEAD)\r
+/* In order to simplify the code, particularly on 16 bit machines, match\r
+ * distances are limited to MAX_DIST instead of WSIZE.\r
+ */\r
+\r
+#define WIN_INIT MAX_MATCH\r
+/* Number of bytes after end of data in window to initialize in order to avoid\r
+ memory checker errors from longest match routines */\r
+\r
+ /* in trees.c */\r
+void ZLIB_INTERNAL _tr_init OF((deflate_state *s));\r
+int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc));\r
+void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf,\r
+ ulg stored_len, int last));\r
+void ZLIB_INTERNAL _tr_align OF((deflate_state *s));\r
+void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf,\r
+ ulg stored_len, int last));\r
+\r
+#define d_code(dist) \\r
+ ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])\r
+/* Mapping from a distance to a distance code. dist is the distance - 1 and\r
+ * must not have side effects. _dist_code[256] and _dist_code[257] are never\r
+ * used.\r
+ */\r
+\r
+#ifndef DEBUG\r
+/* Inline versions of _tr_tally for speed: */\r
+\r
+#if defined(GEN_TREES_H) || !defined(STDC)\r
+ extern uch ZLIB_INTERNAL _length_code[];\r
+ extern uch ZLIB_INTERNAL _dist_code[];\r
+#else\r
+ extern const uch ZLIB_INTERNAL _length_code[];\r
+ extern const uch ZLIB_INTERNAL _dist_code[];\r
+#endif\r
+\r
+# define _tr_tally_lit(s, c, flush) \\r
+ { uch cc = (c); \\r
+ s->d_buf[s->last_lit] = 0; \\r
+ s->l_buf[s->last_lit++] = cc; \\r
+ s->dyn_ltree[cc].Freq++; \\r
+ flush = (s->last_lit == s->lit_bufsize-1); \\r
+ }\r
+# define _tr_tally_dist(s, distance, length, flush) \\r
+ { uch len = (length); \\r
+ ush dist = (distance); \\r
+ s->d_buf[s->last_lit] = dist; \\r
+ s->l_buf[s->last_lit++] = len; \\r
+ dist--; \\r
+ s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \\r
+ s->dyn_dtree[d_code(dist)].Freq++; \\r
+ flush = (s->last_lit == s->lit_bufsize-1); \\r
+ }\r
+#else\r
+# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)\r
+# define _tr_tally_dist(s, distance, length, flush) \\r
+ flush = _tr_tally(s, distance, length)\r
+#endif\r
+\r
+#endif /* DEFLATE_H */\r
--- /dev/null
+/* gzclose.c -- zlib gzclose() function\r
+ * Copyright (C) 2004, 2010 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+#include "gzguts.h"\r
+\r
+/* gzclose() is in a separate file so that it is linked in only if it is used.\r
+ That way the other gzclose functions can be used instead to avoid linking in\r
+ unneeded compression or decompression routines. */\r
+int ZEXPORT gzclose(file)\r
+ gzFile file;\r
+{\r
+#ifndef NO_GZCOMPRESS\r
+ gz_statep state;\r
+\r
+ if (file == NULL)\r
+ return Z_STREAM_ERROR;\r
+ state = (gz_statep)file;\r
+\r
+ return state->mode == GZ_READ ? gzclose_r(file) : gzclose_w(file);\r
+#else\r
+ return gzclose_r(file);\r
+#endif\r
+}\r
--- /dev/null
+/* gzguts.h -- zlib internal header definitions for gz* operations\r
+ * Copyright (C) 2004, 2005, 2010 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+#ifdef _LARGEFILE64_SOURCE\r
+# ifndef _LARGEFILE_SOURCE\r
+# define _LARGEFILE_SOURCE 1\r
+# endif\r
+# ifdef _FILE_OFFSET_BITS\r
+# undef _FILE_OFFSET_BITS\r
+# endif\r
+#endif\r
+\r
+#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ)\r
+# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))\r
+#else\r
+# define ZLIB_INTERNAL\r
+#endif\r
+\r
+#include <stdio.h>\r
+#include "zlib.h"\r
+#ifdef STDC\r
+# include <string.h>\r
+# include <stdlib.h>\r
+# include <limits.h>\r
+#endif\r
+#include <fcntl.h>\r
+\r
+#ifdef NO_DEFLATE /* for compatibility with old definition */\r
+# define NO_GZCOMPRESS\r
+#endif\r
+\r
+#ifdef _MSC_VER\r
+# include <io.h>\r
+# define vsnprintf _vsnprintf\r
+#endif\r
+\r
+#ifndef local\r
+# define local static\r
+#endif\r
+/* compile with -Dlocal if your debugger can't find static symbols */\r
+\r
+/* gz* functions always use library allocation functions */\r
+#ifndef STDC\r
+ extern voidp malloc OF((uInt size));\r
+ extern void free OF((voidpf ptr));\r
+#endif\r
+\r
+/* get errno and strerror definition */\r
+#if defined UNDER_CE\r
+# include <windows.h>\r
+# define zstrerror() gz_strwinerror((DWORD)GetLastError())\r
+#else\r
+# ifdef STDC\r
+# include <errno.h>\r
+# define zstrerror() strerror(errno)\r
+# else\r
+# define zstrerror() "stdio error (consult errno)"\r
+# endif\r
+#endif\r
+\r
+/* provide prototypes for these when building zlib without LFS */\r
+#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0\r
+ ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));\r
+ ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));\r
+ ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));\r
+ ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));\r
+#endif\r
+\r
+/* default i/o buffer size -- double this for output when reading */\r
+#define GZBUFSIZE 8192\r
+\r
+/* gzip modes, also provide a little integrity check on the passed structure */\r
+#define GZ_NONE 0\r
+#define GZ_READ 7247\r
+#define GZ_WRITE 31153\r
+#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */\r
+\r
+/* values for gz_state how */\r
+#define LOOK 0 /* look for a gzip header */\r
+#define COPY 1 /* copy input directly */\r
+#define GZIP 2 /* decompress a gzip stream */\r
+\r
+/* internal gzip file state data structure */\r
+typedef struct {\r
+ /* used for both reading and writing */\r
+ int mode; /* see gzip modes above */\r
+ int fd; /* file descriptor */\r
+ char *path; /* path or fd for error messages */\r
+ z_off64_t pos; /* current position in uncompressed data */\r
+ unsigned size; /* buffer size, zero if not allocated yet */\r
+ unsigned want; /* requested buffer size, default is GZBUFSIZE */\r
+ unsigned char *in; /* input buffer */\r
+ unsigned char *out; /* output buffer (double-sized when reading) */\r
+ unsigned char *next; /* next output data to deliver or write */\r
+ /* just for reading */\r
+ unsigned have; /* amount of output data unused at next */\r
+ int eof; /* true if end of input file reached */\r
+ z_off64_t start; /* where the gzip data started, for rewinding */\r
+ z_off64_t raw; /* where the raw data started, for seeking */\r
+ int how; /* 0: get header, 1: copy, 2: decompress */\r
+ int direct; /* true if last read direct, false if gzip */\r
+ /* just for writing */\r
+ int level; /* compression level */\r
+ int strategy; /* compression strategy */\r
+ /* seek request */\r
+ z_off64_t skip; /* amount to skip (already rewound if backwards) */\r
+ int seek; /* true if seek request pending */\r
+ /* error information */\r
+ int err; /* error code */\r
+ char *msg; /* error message */\r
+ /* zlib inflate or deflate stream */\r
+ z_stream strm; /* stream structure in-place (not a pointer) */\r
+} gz_state;\r
+typedef gz_state FAR *gz_statep;\r
+\r
+/* shared functions */\r
+void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));\r
+#if defined UNDER_CE\r
+char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));\r
+#endif\r
+\r
+/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t\r
+ value -- needed when comparing unsigned to z_off64_t, which is signed\r
+ (possible z_off64_t types off_t, off64_t, and long are all signed) */\r
+#ifdef INT_MAX\r
+# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)\r
+#else\r
+unsigned ZLIB_INTERNAL gz_intmax OF((void));\r
+# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())\r
+#endif\r
--- /dev/null
+/* gzio.c -- IO on .gz files\r
+ * Copyright (C) 1995-2003 Jean-loup Gailly.\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ *\r
+ * Compile this file with -DNO_GZCOMPRESS to avoid the compression code.\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+#include <stdio.h>\r
+\r
+#include "zutil.h"\r
+\r
+#ifdef NO_DEFLATE /* for compatiblity with old definition */\r
+# define NO_GZCOMPRESS\r
+#endif\r
+\r
+#ifndef NO_DUMMY_DECL\r
+struct internal_state {int dummy;}; /* for buggy compilers */\r
+#endif\r
+\r
+#ifndef Z_BUFSIZE\r
+# ifdef MAXSEG_64K\r
+# define Z_BUFSIZE 4096 /* minimize memory usage for 16-bit DOS */\r
+# else\r
+# define Z_BUFSIZE 16384\r
+# endif\r
+#endif\r
+#ifndef Z_PRINTF_BUFSIZE\r
+# define Z_PRINTF_BUFSIZE 4096\r
+#endif\r
+\r
+#ifdef __MVS__\r
+# pragma map (fdopen , "\174\174FDOPEN")\r
+ FILE *fdopen(int, const char *);\r
+#endif\r
+\r
+#ifndef STDC\r
+extern voidp malloc OF((uInt size));\r
+extern void free OF((voidpf ptr));\r
+#endif\r
+\r
+#define ALLOC(size) malloc(size)\r
+#define TRYFREE(p) {if (p) free(p);}\r
+\r
+static int const gz_magic[2] = {0x1f, 0x8b}; /* gzip magic header */\r
+\r
+/* gzip flag byte */\r
+#define ASCII_FLAG 0x01 /* bit 0 set: file probably ascii text */\r
+#define HEAD_CRC 0x02 /* bit 1 set: header CRC present */\r
+#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */\r
+#define ORIG_NAME 0x08 /* bit 3 set: original file name present */\r
+#define COMMENT 0x10 /* bit 4 set: file comment present */\r
+#define RESERVED 0xE0 /* bits 5..7: reserved */\r
+\r
+typedef struct gz_stream {\r
+ z_stream stream;\r
+ int z_err; /* error code for last stream operation */\r
+ int z_eof; /* set if end of input file */\r
+ FILE *file; /* .gz file */\r
+ Byte *inbuf; /* input buffer */\r
+ Byte *outbuf; /* output buffer */\r
+ uLong crc; /* crc32 of uncompressed data */\r
+ char *msg; /* error message */\r
+ char *path; /* path name for debugging only */\r
+ int transparent; /* 1 if input file is not a .gz file */\r
+ char mode; /* 'w' or 'r' */\r
+ z_off_t start; /* start of compressed data in file (header skipped) */\r
+ z_off_t in; /* bytes into deflate or inflate */\r
+ z_off_t out; /* bytes out of deflate or inflate */\r
+ int back; /* one character push-back */\r
+ int last; /* true if push-back is last character */\r
+} gz_stream;\r
+\r
+\r
+local gzFile gz_open OF((const char *path, const char *mode, int fd));\r
+local int do_flush OF((gzFile file, int flush));\r
+local int get_byte OF((gz_stream *s));\r
+local void check_header OF((gz_stream *s));\r
+local int destroy OF((gz_stream *s));\r
+local void putLong OF((FILE *file, uLong x));\r
+local uLong getLong OF((gz_stream *s));\r
+\r
+/* ===========================================================================\r
+ Opens a gzip (.gz) file for reading or writing. The mode parameter\r
+ is as in fopen ("rb" or "wb"). The file is given either by file descriptor\r
+ or path name (if fd == -1).\r
+ gz_open returns NULL if the file could not be opened or if there was\r
+ insufficient memory to allocate the (de)compression state; errno\r
+ can be checked to distinguish the two cases (if errno is zero, the\r
+ zlib error is Z_MEM_ERROR).\r
+*/\r
+local gzFile gz_open (path, mode, fd)\r
+ const char *path;\r
+ const char *mode;\r
+ int fd;\r
+{\r
+ int err;\r
+ int level = Z_DEFAULT_COMPRESSION; /* compression level */\r
+ int strategy = Z_DEFAULT_STRATEGY; /* compression strategy */\r
+ char *p = (char*)mode;\r
+ gz_stream *s;\r
+ char fmode[80]; /* copy of mode, without the compression level */\r
+ char *m = fmode;\r
+\r
+ if (!path || !mode) return Z_NULL;\r
+\r
+ s = (gz_stream *)ALLOC(sizeof(gz_stream));\r
+ if (!s) return Z_NULL;\r
+\r
+ s->stream.zalloc = (alloc_func)0;\r
+ s->stream.zfree = (free_func)0;\r
+ s->stream.opaque = (voidpf)0;\r
+ s->stream.next_in = s->inbuf = Z_NULL;\r
+ s->stream.next_out = s->outbuf = Z_NULL;\r
+ s->stream.avail_in = s->stream.avail_out = 0;\r
+ s->file = NULL;\r
+ s->z_err = Z_OK;\r
+ s->z_eof = 0;\r
+ s->in = 0;\r
+ s->out = 0;\r
+ s->back = EOF;\r
+ s->crc = crc32(0L, Z_NULL, 0);\r
+ s->msg = NULL;\r
+ s->transparent = 0;\r
+\r
+ s->path = (char*)ALLOC(strlen(path)+1);\r
+ if (s->path == NULL) {\r
+ return destroy(s), (gzFile)Z_NULL;\r
+ }\r
+ strcpy(s->path, path); /* do this early for debugging */\r
+\r
+ s->mode = '\0';\r
+ do {\r
+ if (*p == 'r') s->mode = 'r';\r
+ if (*p == 'w' || *p == 'a') s->mode = 'w';\r
+ if (*p >= '0' && *p <= '9') {\r
+ level = *p - '0';\r
+ } else if (*p == 'f') {\r
+ strategy = Z_FILTERED;\r
+ } else if (*p == 'h') {\r
+ strategy = Z_HUFFMAN_ONLY;\r
+ } else if (*p == 'R') {\r
+ strategy = Z_RLE;\r
+ } else {\r
+ *m++ = *p; /* copy the mode */\r
+ }\r
+ } while (*p++ && m != fmode + sizeof(fmode));\r
+ if (s->mode == '\0') return destroy(s), (gzFile)Z_NULL;\r
+\r
+ if (s->mode == 'w') {\r
+#ifdef NO_GZCOMPRESS\r
+ err = Z_STREAM_ERROR;\r
+#else\r
+ err = deflateInit2(&(s->stream), level,\r
+ Z_DEFLATED, -MAX_WBITS, DEF_MEM_LEVEL, strategy);\r
+ /* windowBits is passed < 0 to suppress zlib header */\r
+\r
+ s->stream.next_out = s->outbuf = (Byte*)ALLOC(Z_BUFSIZE);\r
+#endif\r
+ if (err != Z_OK || s->outbuf == Z_NULL) {\r
+ return destroy(s), (gzFile)Z_NULL;\r
+ }\r
+ } else {\r
+ s->stream.next_in = s->inbuf = (Byte*)ALLOC(Z_BUFSIZE);\r
+\r
+ err = inflateInit2(&(s->stream), -MAX_WBITS);\r
+ /* windowBits is passed < 0 to tell that there is no zlib header.\r
+ * Note that in this case inflate *requires* an extra "dummy" byte\r
+ * after the compressed stream in order to complete decompression and\r
+ * return Z_STREAM_END. Here the gzip CRC32 ensures that 4 bytes are\r
+ * present after the compressed stream.\r
+ */\r
+ if (err != Z_OK || s->inbuf == Z_NULL) {\r
+ return destroy(s), (gzFile)Z_NULL;\r
+ }\r
+ }\r
+ s->stream.avail_out = Z_BUFSIZE;\r
+\r
+ errno = 0;\r
+ s->file = fd < 0 ? F_OPEN(path, fmode) : (FILE*)fdopen(fd, fmode);\r
+\r
+ if (s->file == NULL) {\r
+ return destroy(s), (gzFile)Z_NULL;\r
+ }\r
+ if (s->mode == 'w') {\r
+ /* Write a very simple .gz header:\r
+ */\r
+ fprintf(s->file, "%c%c%c%c%c%c%c%c%c%c", gz_magic[0], gz_magic[1],\r
+ Z_DEFLATED, 0 /*flags*/, 0,0,0,0 /*time*/, 0 /*xflags*/, OS_CODE);\r
+ s->start = 10L;\r
+ /* We use 10L instead of ftell(s->file) to because ftell causes an\r
+ * fflush on some systems. This version of the library doesn't use\r
+ * start anyway in write mode, so this initialization is not\r
+ * necessary.\r
+ */\r
+ } else {\r
+ check_header(s); /* skip the .gz header */\r
+ s->start = ftell(s->file) - s->stream.avail_in;\r
+ }\r
+\r
+ return (gzFile)s;\r
+}\r
+\r
+/* ===========================================================================\r
+ Opens a gzip (.gz) file for reading or writing.\r
+*/\r
+gzFile ZEXPORT gzopen (path, mode)\r
+ const char *path;\r
+ const char *mode;\r
+{\r
+ return gz_open (path, mode, -1);\r
+}\r
+\r
+/* ===========================================================================\r
+ Associate a gzFile with the file descriptor fd. fd is not dup'ed here\r
+ to mimic the behavio(u)r of fdopen.\r
+*/\r
+gzFile ZEXPORT gzdopen (fd, mode)\r
+ int fd;\r
+ const char *mode;\r
+{\r
+ char name[20];\r
+\r
+ if (fd < 0) return (gzFile)Z_NULL;\r
+ sprintf(name, "<fd:%d>", fd); /* for debugging */\r
+\r
+ return gz_open (name, mode, fd);\r
+}\r
+\r
+/* ===========================================================================\r
+ * Update the compression level and strategy\r
+ */\r
+int ZEXPORT gzsetparams (file, level, strategy)\r
+ gzFile file;\r
+ int level;\r
+ int strategy;\r
+{\r
+ gz_stream *s = (gz_stream*)file;\r
+\r
+ if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;\r
+\r
+ /* Make room to allow flushing */\r
+ if (s->stream.avail_out == 0) {\r
+\r
+ s->stream.next_out = s->outbuf;\r
+ if (fwrite(s->outbuf, 1, Z_BUFSIZE, s->file) != Z_BUFSIZE) {\r
+ s->z_err = Z_ERRNO;\r
+ }\r
+ s->stream.avail_out = Z_BUFSIZE;\r
+ }\r
+\r
+ return deflateParams (&(s->stream), level, strategy);\r
+}\r
+\r
+/* ===========================================================================\r
+ Read a byte from a gz_stream; update next_in and avail_in. Return EOF\r
+ for end of file.\r
+ IN assertion: the stream s has been sucessfully opened for reading.\r
+*/\r
+local int get_byte(s)\r
+ gz_stream *s;\r
+{\r
+ if (s->z_eof) return EOF;\r
+ if (s->stream.avail_in == 0) {\r
+ errno = 0;\r
+ s->stream.avail_in = fread(s->inbuf, 1, Z_BUFSIZE, s->file);\r
+ if (s->stream.avail_in == 0) {\r
+ s->z_eof = 1;\r
+ if (ferror(s->file)) s->z_err = Z_ERRNO;\r
+ return EOF;\r
+ }\r
+ s->stream.next_in = s->inbuf;\r
+ }\r
+ s->stream.avail_in--;\r
+ return *(s->stream.next_in)++;\r
+}\r
+\r
+/* ===========================================================================\r
+ Check the gzip header of a gz_stream opened for reading. Set the stream\r
+ mode to transparent if the gzip magic header is not present; set s->err\r
+ to Z_DATA_ERROR if the magic header is present but the rest of the header\r
+ is incorrect.\r
+ IN assertion: the stream s has already been created sucessfully;\r
+ s->stream.avail_in is zero for the first time, but may be non-zero\r
+ for concatenated .gz files.\r
+*/\r
+local void check_header(s)\r
+ gz_stream *s;\r
+{\r
+ int method; /* method byte */\r
+ int flags; /* flags byte */\r
+ uInt len;\r
+ int c;\r
+\r
+ /* Assure two bytes in the buffer so we can peek ahead -- handle case\r
+ where first byte of header is at the end of the buffer after the last\r
+ gzip segment */\r
+ len = s->stream.avail_in;\r
+ if (len < 2) {\r
+ if (len) s->inbuf[0] = s->stream.next_in[0];\r
+ errno = 0;\r
+ len = fread(s->inbuf + len, 1, Z_BUFSIZE >> len, s->file);\r
+ if (len == 0 && ferror(s->file)) s->z_err = Z_ERRNO;\r
+ s->stream.avail_in += len;\r
+ s->stream.next_in = s->inbuf;\r
+ if (s->stream.avail_in < 2) {\r
+ s->transparent = s->stream.avail_in;\r
+ return;\r
+ }\r
+ }\r
+\r
+ /* Peek ahead to check the gzip magic header */\r
+ if (s->stream.next_in[0] != gz_magic[0] ||\r
+ s->stream.next_in[1] != gz_magic[1]) {\r
+ s->transparent = 1;\r
+ return;\r
+ }\r
+ s->stream.avail_in -= 2;\r
+ s->stream.next_in += 2;\r
+\r
+ /* Check the rest of the gzip header */\r
+ method = get_byte(s);\r
+ flags = get_byte(s);\r
+ if (method != Z_DEFLATED || (flags & RESERVED) != 0) {\r
+ s->z_err = Z_DATA_ERROR;\r
+ return;\r
+ }\r
+\r
+ /* Discard time, xflags and OS code: */\r
+ for (len = 0; len < 6; len++) (void)get_byte(s);\r
+\r
+ if ((flags & EXTRA_FIELD) != 0) { /* skip the extra field */\r
+ len = (uInt)get_byte(s);\r
+ len += ((uInt)get_byte(s))<<8;\r
+ /* len is garbage if EOF but the loop below will quit anyway */\r
+ while (len-- != 0 && get_byte(s) != EOF) ;\r
+ }\r
+ if ((flags & ORIG_NAME) != 0) { /* skip the original file name */\r
+ while ((c = get_byte(s)) != 0 && c != EOF) ;\r
+ }\r
+ if ((flags & COMMENT) != 0) { /* skip the .gz file comment */\r
+ while ((c = get_byte(s)) != 0 && c != EOF) ;\r
+ }\r
+ if ((flags & HEAD_CRC) != 0) { /* skip the header crc */\r
+ for (len = 0; len < 2; len++) (void)get_byte(s);\r
+ }\r
+ s->z_err = s->z_eof ? Z_DATA_ERROR : Z_OK;\r
+}\r
+\r
+ /* ===========================================================================\r
+ * Cleanup then free the given gz_stream. Return a zlib error code.\r
+ Try freeing in the reverse order of allocations.\r
+ */\r
+local int destroy (s)\r
+ gz_stream *s;\r
+{\r
+ int err = Z_OK;\r
+\r
+ if (!s) return Z_STREAM_ERROR;\r
+\r
+ TRYFREE(s->msg);\r
+\r
+ if (s->stream.state != NULL) {\r
+ if (s->mode == 'w') {\r
+#ifdef NO_GZCOMPRESS\r
+ err = Z_STREAM_ERROR;\r
+#else\r
+ err = deflateEnd(&(s->stream));\r
+#endif\r
+ } else if (s->mode == 'r') {\r
+ err = inflateEnd(&(s->stream));\r
+ }\r
+ }\r
+ if (s->file != NULL && fclose(s->file)) {\r
+#ifdef ESPIPE\r
+ if (errno != ESPIPE) /* fclose is broken for pipes in HP/UX */\r
+#endif\r
+ err = Z_ERRNO;\r
+ }\r
+ if (s->z_err < 0) err = s->z_err;\r
+\r
+ TRYFREE(s->inbuf);\r
+ TRYFREE(s->outbuf);\r
+ TRYFREE(s->path);\r
+ TRYFREE(s);\r
+ return err;\r
+}\r
+\r
+/* ===========================================================================\r
+ Reads the given number of uncompressed bytes from the compressed file.\r
+ gzread returns the number of bytes actually read (0 for end of file).\r
+*/\r
+int ZEXPORT gzread (file, buf, len)\r
+ gzFile file;\r
+ voidp buf;\r
+ unsigned len;\r
+{\r
+ gz_stream *s = (gz_stream*)file;\r
+ Bytef *start = (Bytef*)buf; /* starting point for crc computation */\r
+ Byte *next_out; /* == stream.next_out but not forced far (for MSDOS) */\r
+\r
+ if (s == NULL || s->mode != 'r') return Z_STREAM_ERROR;\r
+\r
+ if (s->z_err == Z_DATA_ERROR || s->z_err == Z_ERRNO) return -1;\r
+ if (s->z_err == Z_STREAM_END) return 0; /* EOF */\r
+\r
+ next_out = (Byte*)buf;\r
+ s->stream.next_out = (Bytef*)buf;\r
+ s->stream.avail_out = len;\r
+\r
+ if (s->stream.avail_out && s->back != EOF) {\r
+ *next_out++ = s->back;\r
+ s->stream.next_out++;\r
+ s->stream.avail_out--;\r
+ s->back = EOF;\r
+ s->out++;\r
+ if (s->last) {\r
+ s->z_err = Z_STREAM_END;\r
+ return 1;\r
+ }\r
+ }\r
+\r
+ while (s->stream.avail_out != 0) {\r
+\r
+ if (s->transparent) {\r
+ /* Copy first the lookahead bytes: */\r
+ uInt n = s->stream.avail_in;\r
+ if (n > s->stream.avail_out) n = s->stream.avail_out;\r
+ if (n > 0) {\r
+ zmemcpy(s->stream.next_out, s->stream.next_in, n);\r
+ next_out += n;\r
+ s->stream.next_out = next_out;\r
+ s->stream.next_in += n;\r
+ s->stream.avail_out -= n;\r
+ s->stream.avail_in -= n;\r
+ }\r
+ if (s->stream.avail_out > 0) {\r
+ s->stream.avail_out -= fread(next_out, 1, s->stream.avail_out,\r
+ s->file);\r
+ }\r
+ len -= s->stream.avail_out;\r
+ s->in += len;\r
+ s->out += len;\r
+ if (len == 0) s->z_eof = 1;\r
+ return (int)len;\r
+ }\r
+ if (s->stream.avail_in == 0 && !s->z_eof) {\r
+\r
+ errno = 0;\r
+ s->stream.avail_in = fread(s->inbuf, 1, Z_BUFSIZE, s->file);\r
+ if (s->stream.avail_in == 0) {\r
+ s->z_eof = 1;\r
+ if (ferror(s->file)) {\r
+ s->z_err = Z_ERRNO;\r
+ break;\r
+ }\r
+ }\r
+ s->stream.next_in = s->inbuf;\r
+ }\r
+ s->in += s->stream.avail_in;\r
+ s->out += s->stream.avail_out;\r
+ s->z_err = inflate(&(s->stream), Z_NO_FLUSH);\r
+ s->in -= s->stream.avail_in;\r
+ s->out -= s->stream.avail_out;\r
+\r
+ if (s->z_err == Z_STREAM_END) {\r
+ /* Check CRC and original size */\r
+ s->crc = crc32(s->crc, start, (uInt)(s->stream.next_out - start));\r
+ start = s->stream.next_out;\r
+\r
+ if (getLong(s) != s->crc) {\r
+ s->z_err = Z_DATA_ERROR;\r
+ } else {\r
+ (void)getLong(s);\r
+ /* The uncompressed length returned by above getlong() may be\r
+ * different from s->out in case of concatenated .gz files.\r
+ * Check for such files:\r
+ */\r
+ check_header(s);\r
+ if (s->z_err == Z_OK) {\r
+ inflateReset(&(s->stream));\r
+ s->crc = crc32(0L, Z_NULL, 0);\r
+ }\r
+ }\r
+ }\r
+ if (s->z_err != Z_OK || s->z_eof) break;\r
+ }\r
+ s->crc = crc32(s->crc, start, (uInt)(s->stream.next_out - start));\r
+\r
+ return (int)(len - s->stream.avail_out);\r
+}\r
+\r
+\r
+/* ===========================================================================\r
+ Reads one byte from the compressed file. gzgetc returns this byte\r
+ or -1 in case of end of file or error.\r
+*/\r
+int ZEXPORT gzgetc(file)\r
+ gzFile file;\r
+{\r
+ unsigned char c;\r
+\r
+ return gzread(file, &c, 1) == 1 ? c : -1;\r
+}\r
+\r
+\r
+/* ===========================================================================\r
+ Push one byte back onto the stream.\r
+*/\r
+int ZEXPORT gzungetc(c, file)\r
+ int c;\r
+ gzFile file;\r
+{\r
+ gz_stream *s = (gz_stream*)file;\r
+\r
+ if (s == NULL || s->mode != 'r' || c == EOF || s->back != EOF) return EOF;\r
+ s->back = c;\r
+ s->out--;\r
+ s->last = (s->z_err == Z_STREAM_END);\r
+ if (s->last) s->z_err = Z_OK;\r
+ s->z_eof = 0;\r
+ return c;\r
+}\r
+\r
+\r
+/* ===========================================================================\r
+ Reads bytes from the compressed file until len-1 characters are\r
+ read, or a newline character is read and transferred to buf, or an\r
+ end-of-file condition is encountered. The string is then terminated\r
+ with a null character.\r
+ gzgets returns buf, or Z_NULL in case of error.\r
+\r
+ The current implementation is not optimized at all.\r
+*/\r
+char * ZEXPORT gzgets(file, buf, len)\r
+ gzFile file;\r
+ char *buf;\r
+ int len;\r
+{\r
+ char *b = buf;\r
+ if (buf == Z_NULL || len <= 0) return Z_NULL;\r
+\r
+ while (--len > 0 && gzread(file, buf, 1) == 1 && *buf++ != '\n') ;\r
+ *buf = '\0';\r
+ return b == buf && len > 0 ? Z_NULL : b;\r
+}\r
+\r
+\r
+#ifndef NO_GZCOMPRESS\r
+/* ===========================================================================\r
+ Writes the given number of uncompressed bytes into the compressed file.\r
+ gzwrite returns the number of bytes actually written (0 in case of error).\r
+*/\r
+int ZEXPORT gzwrite (file, buf, len)\r
+ gzFile file;\r
+ voidpc buf;\r
+ unsigned len;\r
+{\r
+ gz_stream *s = (gz_stream*)file;\r
+\r
+ if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;\r
+\r
+ s->stream.next_in = (Bytef*)buf;\r
+ s->stream.avail_in = len;\r
+\r
+ while (s->stream.avail_in != 0) {\r
+\r
+ if (s->stream.avail_out == 0) {\r
+\r
+ s->stream.next_out = s->outbuf;\r
+ if (fwrite(s->outbuf, 1, Z_BUFSIZE, s->file) != Z_BUFSIZE) {\r
+ s->z_err = Z_ERRNO;\r
+ break;\r
+ }\r
+ s->stream.avail_out = Z_BUFSIZE;\r
+ }\r
+ s->in += s->stream.avail_in;\r
+ s->out += s->stream.avail_out;\r
+ s->z_err = deflate(&(s->stream), Z_NO_FLUSH);\r
+ s->in -= s->stream.avail_in;\r
+ s->out -= s->stream.avail_out;\r
+ if (s->z_err != Z_OK) break;\r
+ }\r
+ s->crc = crc32(s->crc, (const Bytef *)buf, len);\r
+\r
+ return (int)(len - s->stream.avail_in);\r
+}\r
+\r
+\r
+/* ===========================================================================\r
+ Converts, formats, and writes the args to the compressed file under\r
+ control of the format string, as in fprintf. gzprintf returns the number of\r
+ uncompressed bytes actually written (0 in case of error).\r
+*/\r
+#ifdef STDC\r
+#include <stdarg.h>\r
+\r
+int ZEXPORTVA gzprintf (gzFile file, const char *format, /* args */ ...)\r
+{\r
+ char buf[Z_PRINTF_BUFSIZE];\r
+ va_list va;\r
+ int len;\r
+\r
+ buf[sizeof(buf) - 1] = 0;\r
+ va_start(va, format);\r
+#ifdef NO_vsnprintf\r
+# ifdef HAS_vsprintf_void\r
+ (void)vsprintf(buf, format, va);\r
+ va_end(va);\r
+ for (len = 0; len < sizeof(buf); len++)\r
+ if (buf[len] == 0) break;\r
+# else\r
+ len = vsprintf(buf, format, va);\r
+ va_end(va);\r
+# endif\r
+#else\r
+# ifdef HAS_vsnprintf_void\r
+ (void)vsnprintf(buf, sizeof(buf), format, va);\r
+ va_end(va);\r
+ len = strlen(buf);\r
+# else\r
+ len = vsnprintf(buf, sizeof(buf), format, va);\r
+ va_end(va);\r
+# endif\r
+#endif\r
+ if (len <= 0 || len >= (int)sizeof(buf) || buf[sizeof(buf) - 1] != 0)\r
+ return 0;\r
+ return gzwrite(file, buf, (unsigned)len);\r
+}\r
+#else /* not ANSI C */\r
+\r
+int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,\r
+ a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)\r
+ gzFile file;\r
+ const char *format;\r
+ int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,\r
+ a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;\r
+{\r
+ char buf[Z_PRINTF_BUFSIZE];\r
+ int len;\r
+\r
+ buf[sizeof(buf) - 1] = 0;\r
+#ifdef NO_snprintf\r
+# ifdef HAS_sprintf_void\r
+ sprintf(buf, format, a1, a2, a3, a4, a5, a6, a7, a8,\r
+ a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);\r
+ for (len = 0; len < sizeof(buf); len++)\r
+ if (buf[len] == 0) break;\r
+# else\r
+ len = sprintf(buf, format, a1, a2, a3, a4, a5, a6, a7, a8,\r
+ a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);\r
+# endif\r
+#else\r
+# ifdef HAS_snprintf_void\r
+ snprintf(buf, sizeof(buf), format, a1, a2, a3, a4, a5, a6, a7, a8,\r
+ a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);\r
+ len = strlen(buf);\r
+# else\r
+ len = snprintf(buf, sizeof(buf), format, a1, a2, a3, a4, a5, a6, a7, a8,\r
+ a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);\r
+# endif\r
+#endif\r
+ if (len <= 0 || len >= sizeof(buf) || buf[sizeof(buf) - 1] != 0)\r
+ return 0;\r
+ return gzwrite(file, buf, len);\r
+}\r
+#endif\r
+\r
+/* ===========================================================================\r
+ Writes c, converted to an unsigned char, into the compressed file.\r
+ gzputc returns the value that was written, or -1 in case of error.\r
+*/\r
+int ZEXPORT gzputc(file, c)\r
+ gzFile file;\r
+ int c;\r
+{\r
+ unsigned char cc = (unsigned char) c; /* required for big endian systems */\r
+\r
+ return gzwrite(file, &cc, 1) == 1 ? (int)cc : -1;\r
+}\r
+\r
+\r
+/* ===========================================================================\r
+ Writes the given null-terminated string to the compressed file, excluding\r
+ the terminating null character.\r
+ gzputs returns the number of characters written, or -1 in case of error.\r
+*/\r
+int ZEXPORT gzputs(file, s)\r
+ gzFile file;\r
+ const char *s;\r
+{\r
+ return gzwrite(file, (char*)s, (unsigned)strlen(s));\r
+}\r
+\r
+\r
+/* ===========================================================================\r
+ Flushes all pending output into the compressed file. The parameter\r
+ flush is as in the deflate() function.\r
+*/\r
+local int do_flush (file, flush)\r
+ gzFile file;\r
+ int flush;\r
+{\r
+ uInt len;\r
+ int done = 0;\r
+ gz_stream *s = (gz_stream*)file;\r
+\r
+ if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;\r
+\r
+ s->stream.avail_in = 0; /* should be zero already anyway */\r
+\r
+ for (;;) {\r
+ len = Z_BUFSIZE - s->stream.avail_out;\r
+\r
+ if (len != 0) {\r
+ if ((uInt)fwrite(s->outbuf, 1, len, s->file) != len) {\r
+ s->z_err = Z_ERRNO;\r
+ return Z_ERRNO;\r
+ }\r
+ s->stream.next_out = s->outbuf;\r
+ s->stream.avail_out = Z_BUFSIZE;\r
+ }\r
+ if (done) break;\r
+ s->out += s->stream.avail_out;\r
+ s->z_err = deflate(&(s->stream), flush);\r
+ s->out -= s->stream.avail_out;\r
+\r
+ /* Ignore the second of two consecutive flushes: */\r
+ if (len == 0 && s->z_err == Z_BUF_ERROR) s->z_err = Z_OK;\r
+\r
+ /* deflate has finished flushing only when it hasn't used up\r
+ * all the available space in the output buffer:\r
+ */\r
+ done = (s->stream.avail_out != 0 || s->z_err == Z_STREAM_END);\r
+\r
+ if (s->z_err != Z_OK && s->z_err != Z_STREAM_END) break;\r
+ }\r
+ return s->z_err == Z_STREAM_END ? Z_OK : s->z_err;\r
+}\r
+\r
+int ZEXPORT gzflush (file, flush)\r
+ gzFile file;\r
+ int flush;\r
+{\r
+ gz_stream *s = (gz_stream*)file;\r
+ int err = do_flush (file, flush);\r
+\r
+ if (err) return err;\r
+ fflush(s->file);\r
+ return s->z_err == Z_STREAM_END ? Z_OK : s->z_err;\r
+}\r
+#endif /* NO_GZCOMPRESS */\r
+\r
+/* ===========================================================================\r
+ Sets the starting position for the next gzread or gzwrite on the given\r
+ compressed file. The offset represents a number of bytes in the\r
+ gzseek returns the resulting offset location as measured in bytes from\r
+ the beginning of the uncompressed stream, or -1 in case of error.\r
+ SEEK_END is not implemented, returns error.\r
+ In this version of the library, gzseek can be extremely slow.\r
+*/\r
+z_off_t ZEXPORT gzseek (file, offset, whence)\r
+ gzFile file;\r
+ z_off_t offset;\r
+ int whence;\r
+{\r
+ gz_stream *s = (gz_stream*)file;\r
+\r
+ if (s == NULL || whence == SEEK_END ||\r
+ s->z_err == Z_ERRNO || s->z_err == Z_DATA_ERROR) {\r
+ return -1L;\r
+ }\r
+\r
+ if (s->mode == 'w') {\r
+#ifdef NO_GZCOMPRESS\r
+ return -1L;\r
+#else\r
+ if (whence == SEEK_SET) {\r
+ offset -= s->in;\r
+ }\r
+ if (offset < 0) return -1L;\r
+\r
+ /* At this point, offset is the number of zero bytes to write. */\r
+ if (s->inbuf == Z_NULL) {\r
+ s->inbuf = (Byte*)ALLOC(Z_BUFSIZE); /* for seeking */\r
+ if (s->inbuf == Z_NULL) return -1L;\r
+ zmemzero(s->inbuf, Z_BUFSIZE);\r
+ }\r
+ while (offset > 0) {\r
+ uInt size = Z_BUFSIZE;\r
+ if (offset < Z_BUFSIZE) size = (uInt)offset;\r
+\r
+ size = gzwrite(file, s->inbuf, size);\r
+ if (size == 0) return -1L;\r
+\r
+ offset -= size;\r
+ }\r
+ return s->in;\r
+#endif\r
+ }\r
+ /* Rest of function is for reading only */\r
+\r
+ /* compute absolute position */\r
+ if (whence == SEEK_CUR) {\r
+ offset += s->out;\r
+ }\r
+ if (offset < 0) return -1L;\r
+\r
+ if (s->transparent) {\r
+ /* map to fseek */\r
+ s->back = EOF;\r
+ s->stream.avail_in = 0;\r
+ s->stream.next_in = s->inbuf;\r
+ if (fseek(s->file, offset, SEEK_SET) < 0) return -1L;\r
+\r
+ s->in = s->out = offset;\r
+ return offset;\r
+ }\r
+\r
+ /* For a negative seek, rewind and use positive seek */\r
+ if (offset >= s->out) {\r
+ offset -= s->out;\r
+ } else if (gzrewind(file) < 0) {\r
+ return -1L;\r
+ }\r
+ /* offset is now the number of bytes to skip. */\r
+\r
+ if (offset != 0 && s->outbuf == Z_NULL) {\r
+ s->outbuf = (Byte*)ALLOC(Z_BUFSIZE);\r
+ if (s->outbuf == Z_NULL) return -1L;\r
+ }\r
+ if (offset && s->back != EOF) {\r
+ s->back = EOF;\r
+ s->out++;\r
+ offset--;\r
+ if (s->last) s->z_err = Z_STREAM_END;\r
+ }\r
+ while (offset > 0) {\r
+ int size = Z_BUFSIZE;\r
+ if (offset < Z_BUFSIZE) size = (int)offset;\r
+\r
+ size = gzread(file, s->outbuf, (uInt)size);\r
+ if (size <= 0) return -1L;\r
+ offset -= size;\r
+ }\r
+ return s->out;\r
+}\r
+\r
+/* ===========================================================================\r
+ Rewinds input file.\r
+*/\r
+int ZEXPORT gzrewind (file)\r
+ gzFile file;\r
+{\r
+ gz_stream *s = (gz_stream*)file;\r
+\r
+ if (s == NULL || s->mode != 'r') return -1;\r
+\r
+ s->z_err = Z_OK;\r
+ s->z_eof = 0;\r
+ s->back = EOF;\r
+ s->stream.avail_in = 0;\r
+ s->stream.next_in = s->inbuf;\r
+ s->crc = crc32(0L, Z_NULL, 0);\r
+ if (!s->transparent) (void)inflateReset(&s->stream);\r
+ s->in = 0;\r
+ s->out = 0;\r
+ return fseek(s->file, s->start, SEEK_SET);\r
+}\r
+\r
+/* ===========================================================================\r
+ Returns the starting position for the next gzread or gzwrite on the\r
+ given compressed file. This position represents a number of bytes in the\r
+ uncompressed data stream.\r
+*/\r
+z_off_t ZEXPORT gztell (file)\r
+ gzFile file;\r
+{\r
+ return gzseek(file, 0L, SEEK_CUR);\r
+}\r
+\r
+/* ===========================================================================\r
+ Returns 1 when EOF has previously been detected reading the given\r
+ input stream, otherwise zero.\r
+*/\r
+int ZEXPORT gzeof (file)\r
+ gzFile file;\r
+{\r
+ gz_stream *s = (gz_stream*)file;\r
+\r
+ /* With concatenated compressed files that can have embedded\r
+ * crc trailers, z_eof is no longer the only/best indicator of EOF\r
+ * on a gz_stream. Handle end-of-stream error explicitly here.\r
+ */\r
+ if (s == NULL || s->mode != 'r') return 0;\r
+ if (s->z_eof) return 1;\r
+ return s->z_err == Z_STREAM_END;\r
+}\r
+\r
+/* ===========================================================================\r
+ Outputs a long in LSB order to the given file\r
+*/\r
+local void putLong (file, x)\r
+ FILE *file;\r
+ uLong x;\r
+{\r
+ int n;\r
+ for (n = 0; n < 4; n++) {\r
+ fputc((int)(x & 0xff), file);\r
+ x >>= 8;\r
+ }\r
+}\r
+\r
+/* ===========================================================================\r
+ Reads a long in LSB order from the given gz_stream. Sets z_err in case\r
+ of error.\r
+*/\r
+local uLong getLong (s)\r
+ gz_stream *s;\r
+{\r
+ uLong x = (uLong)get_byte(s);\r
+ int c;\r
+\r
+ x += ((uLong)get_byte(s))<<8;\r
+ x += ((uLong)get_byte(s))<<16;\r
+ c = get_byte(s);\r
+ if (c == EOF) s->z_err = Z_DATA_ERROR;\r
+ x += ((uLong)c)<<24;\r
+ return x;\r
+}\r
+\r
+/* ===========================================================================\r
+ Flushes all pending output if necessary, closes the compressed file\r
+ and deallocates all the (de)compression state.\r
+*/\r
+int ZEXPORT gzclose (file)\r
+ gzFile file;\r
+{\r
+ int err;\r
+ gz_stream *s = (gz_stream*)file;\r
+\r
+ if (s == NULL) return Z_STREAM_ERROR;\r
+\r
+ if (s->mode == 'w') {\r
+#ifdef NO_GZCOMPRESS\r
+ return Z_STREAM_ERROR;\r
+#else\r
+ err = do_flush (file, Z_FINISH);\r
+ if (err != Z_OK) return destroy((gz_stream*)file);\r
+\r
+ putLong (s->file, s->crc);\r
+ putLong (s->file, (uLong)(s->in & 0xffffffff));\r
+#endif\r
+ }\r
+ return destroy((gz_stream*)file);\r
+}\r
+\r
+/* ===========================================================================\r
+ Returns the error message for the last error which occured on the\r
+ given compressed file. errnum is set to zlib error number. If an\r
+ error occured in the file system and not in the compression library,\r
+ errnum is set to Z_ERRNO and the application may consult errno\r
+ to get the exact error code.\r
+*/\r
+const char * ZEXPORT gzerror (file, errnum)\r
+ gzFile file;\r
+ int *errnum;\r
+{\r
+ char *m;\r
+ gz_stream *s = (gz_stream*)file;\r
+\r
+ if (s == NULL) {\r
+ *errnum = Z_STREAM_ERROR;\r
+ return (const char*)ERR_MSG(Z_STREAM_ERROR);\r
+ }\r
+ *errnum = s->z_err;\r
+ if (*errnum == Z_OK) return (const char*)"";\r
+\r
+ m = (char*)(*errnum == Z_ERRNO ? zstrerror(errno) : s->stream.msg);\r
+\r
+ if (m == NULL || *m == '\0') m = (char*)ERR_MSG(s->z_err);\r
+\r
+ TRYFREE(s->msg);\r
+ s->msg = (char*)ALLOC(strlen(s->path) + strlen(m) + 3);\r
+ if (s->msg == Z_NULL) return (const char*)ERR_MSG(Z_MEM_ERROR);\r
+ strcpy(s->msg, s->path);\r
+ strcat(s->msg, ": ");\r
+ strcat(s->msg, m);\r
+ return (const char*)s->msg;\r
+}\r
+\r
+/* ===========================================================================\r
+ Clear the error and end-of-file flags, and do the same for the real file.\r
+*/\r
+void ZEXPORT gzclearerr (file)\r
+ gzFile file;\r
+{\r
+ gz_stream *s = (gz_stream*)file;\r
+\r
+ if (s == NULL) return;\r
+ if (s->z_err != Z_STREAM_END) s->z_err = Z_OK;\r
+ s->z_eof = 0;\r
+ clearerr(s->file);\r
+}\r
--- /dev/null
+/* gzlib.c -- zlib functions common to reading and writing gzip files\r
+ * Copyright (C) 2004, 2010 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+#include "gzguts.h"\r
+\r
+#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0\r
+# define LSEEK lseek64\r
+#else\r
+# define LSEEK lseek\r
+#endif\r
+\r
+/* Local functions */\r
+local void gz_reset OF((gz_statep));\r
+local gzFile gz_open OF((const char *, int, const char *));\r
+\r
+#if defined UNDER_CE\r
+\r
+/* Map the Windows error number in ERROR to a locale-dependent error message\r
+ string and return a pointer to it. Typically, the values for ERROR come\r
+ from GetLastError.\r
+\r
+ The string pointed to shall not be modified by the application, but may be\r
+ overwritten by a subsequent call to gz_strwinerror\r
+\r
+ The gz_strwinerror function does not change the current setting of\r
+ GetLastError. */\r
+char ZLIB_INTERNAL *gz_strwinerror (error)\r
+ DWORD error;\r
+{\r
+ static char buf[1024];\r
+\r
+ wchar_t *msgbuf;\r
+ DWORD lasterr = GetLastError();\r
+ DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM\r
+ | FORMAT_MESSAGE_ALLOCATE_BUFFER,\r
+ NULL,\r
+ error,\r
+ 0, /* Default language */\r
+ (LPVOID)&msgbuf,\r
+ 0,\r
+ NULL);\r
+ if (chars != 0) {\r
+ /* If there is an \r\n appended, zap it. */\r
+ if (chars >= 2\r
+ && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') {\r
+ chars -= 2;\r
+ msgbuf[chars] = 0;\r
+ }\r
+\r
+ if (chars > sizeof (buf) - 1) {\r
+ chars = sizeof (buf) - 1;\r
+ msgbuf[chars] = 0;\r
+ }\r
+\r
+ wcstombs(buf, msgbuf, chars + 1);\r
+ LocalFree(msgbuf);\r
+ }\r
+ else {\r
+ sprintf(buf, "unknown win32 error (%ld)", error);\r
+ }\r
+\r
+ SetLastError(lasterr);\r
+ return buf;\r
+}\r
+\r
+#endif /* UNDER_CE */\r
+\r
+/* Reset gzip file state */\r
+local void gz_reset(state)\r
+ gz_statep state;\r
+{\r
+ if (state->mode == GZ_READ) { /* for reading ... */\r
+ state->have = 0; /* no output data available */\r
+ state->eof = 0; /* not at end of file */\r
+ state->how = LOOK; /* look for gzip header */\r
+ state->direct = 1; /* default for empty file */\r
+ }\r
+ state->seek = 0; /* no seek request pending */\r
+ gz_error(state, Z_OK, NULL); /* clear error */\r
+ state->pos = 0; /* no uncompressed data yet */\r
+ state->strm.avail_in = 0; /* no input data yet */\r
+}\r
+\r
+/* Open a gzip file either by name or file descriptor. */\r
+local gzFile gz_open(path, fd, mode)\r
+ const char *path;\r
+ int fd;\r
+ const char *mode;\r
+{\r
+ gz_statep state;\r
+\r
+ /* allocate gzFile structure to return */\r
+ state = malloc(sizeof(gz_state));\r
+ if (state == NULL)\r
+ return NULL;\r
+ state->size = 0; /* no buffers allocated yet */\r
+ state->want = GZBUFSIZE; /* requested buffer size */\r
+ state->msg = NULL; /* no error message yet */\r
+\r
+ /* interpret mode */\r
+ state->mode = GZ_NONE;\r
+ state->level = Z_DEFAULT_COMPRESSION;\r
+ state->strategy = Z_DEFAULT_STRATEGY;\r
+ while (*mode) {\r
+ if (*mode >= '0' && *mode <= '9')\r
+ state->level = *mode - '0';\r
+ else\r
+ switch (*mode) {\r
+ case 'r':\r
+ state->mode = GZ_READ;\r
+ break;\r
+#ifndef NO_GZCOMPRESS\r
+ case 'w':\r
+ state->mode = GZ_WRITE;\r
+ break;\r
+ case 'a':\r
+ state->mode = GZ_APPEND;\r
+ break;\r
+#endif\r
+ case '+': /* can't read and write at the same time */\r
+ free(state);\r
+ return NULL;\r
+ case 'b': /* ignore -- will request binary anyway */\r
+ break;\r
+ case 'f':\r
+ state->strategy = Z_FILTERED;\r
+ break;\r
+ case 'h':\r
+ state->strategy = Z_HUFFMAN_ONLY;\r
+ break;\r
+ case 'R':\r
+ state->strategy = Z_RLE;\r
+ break;\r
+ case 'F':\r
+ state->strategy = Z_FIXED;\r
+ default: /* could consider as an error, but just ignore */\r
+ ;\r
+ }\r
+ mode++;\r
+ }\r
+\r
+ /* must provide an "r", "w", or "a" */\r
+ if (state->mode == GZ_NONE) {\r
+ free(state);\r
+ return NULL;\r
+ }\r
+\r
+ /* save the path name for error messages */\r
+ state->path = malloc(strlen(path) + 1);\r
+ if (state->path == NULL) {\r
+ free(state);\r
+ return NULL;\r
+ }\r
+ strcpy(state->path, path);\r
+\r
+ /* open the file with the appropriate mode (or just use fd) */\r
+ state->fd = fd != -1 ? fd :\r
+ open(path,\r
+#ifdef O_LARGEFILE\r
+ O_LARGEFILE |\r
+#endif\r
+#ifdef O_BINARY\r
+ O_BINARY |\r
+#endif\r
+ (state->mode == GZ_READ ?\r
+ O_RDONLY :\r
+ (O_WRONLY | O_CREAT | (\r
+ state->mode == GZ_WRITE ?\r
+ O_TRUNC :\r
+ O_APPEND))),\r
+ 0666);\r
+ if (state->fd == -1) {\r
+ free(state->path);\r
+ free(state);\r
+ return NULL;\r
+ }\r
+ if (state->mode == GZ_APPEND)\r
+ state->mode = GZ_WRITE; /* simplify later checks */\r
+\r
+ /* save the current position for rewinding (only if reading) */\r
+ if (state->mode == GZ_READ) {\r
+ state->start = LSEEK(state->fd, 0, SEEK_CUR);\r
+ if (state->start == -1) state->start = 0;\r
+ }\r
+\r
+ /* initialize stream */\r
+ gz_reset(state);\r
+\r
+ /* return stream */\r
+ return (gzFile)state;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+gzFile ZEXPORT gzopen(path, mode)\r
+ const char *path;\r
+ const char *mode;\r
+{\r
+ return gz_open(path, -1, mode);\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+gzFile ZEXPORT gzopen64(path, mode)\r
+ const char *path;\r
+ const char *mode;\r
+{\r
+ return gz_open(path, -1, mode);\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+gzFile ZEXPORT gzdopen(fd, mode)\r
+ int fd;\r
+ const char *mode;\r
+{\r
+ char *path; /* identifier for error messages */\r
+ gzFile gz;\r
+\r
+ if (fd == -1 || (path = malloc(7 + 3 * sizeof(int))) == NULL)\r
+ return NULL;\r
+ sprintf(path, "<fd:%d>", fd); /* for debugging */\r
+ gz = gz_open(path, fd, mode);\r
+ free(path);\r
+ return gz;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzbuffer(file, size)\r
+ gzFile file;\r
+ unsigned size;\r
+{\r
+ gz_statep state;\r
+\r
+ /* get internal structure and check integrity */\r
+ if (file == NULL)\r
+ return -1;\r
+ state = (gz_statep)file;\r
+ if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
+ return -1;\r
+\r
+ /* make sure we haven't already allocated memory */\r
+ if (state->size != 0)\r
+ return -1;\r
+\r
+ /* check and set requested size */\r
+ if (size == 0)\r
+ return -1;\r
+ state->want = size;\r
+ return 0;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzrewind(file)\r
+ gzFile file;\r
+{\r
+ gz_statep state;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return -1;\r
+ state = (gz_statep)file;\r
+\r
+ /* check that we're reading and that there's no error */\r
+ if (state->mode != GZ_READ || state->err != Z_OK)\r
+ return -1;\r
+\r
+ /* back up and start over */\r
+ if (LSEEK(state->fd, state->start, SEEK_SET) == -1)\r
+ return -1;\r
+ gz_reset(state);\r
+ return 0;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+z_off64_t ZEXPORT gzseek64(file, offset, whence)\r
+ gzFile file;\r
+ z_off64_t offset;\r
+ int whence;\r
+{\r
+ unsigned n;\r
+ z_off64_t ret;\r
+ gz_statep state;\r
+\r
+ /* get internal structure and check integrity */\r
+ if (file == NULL)\r
+ return -1;\r
+ state = (gz_statep)file;\r
+ if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
+ return -1;\r
+\r
+ /* check that there's no error */\r
+ if (state->err != Z_OK)\r
+ return -1;\r
+\r
+ /* can only seek from start or relative to current position */\r
+ if (whence != SEEK_SET && whence != SEEK_CUR)\r
+ return -1;\r
+\r
+ /* normalize offset to a SEEK_CUR specification */\r
+ if (whence == SEEK_SET)\r
+ offset -= state->pos;\r
+ else if (state->seek)\r
+ offset += state->skip;\r
+ state->seek = 0;\r
+\r
+ /* if within raw area while reading, just go there */\r
+ if (state->mode == GZ_READ && state->how == COPY &&\r
+ state->pos + offset >= state->raw) {\r
+ ret = LSEEK(state->fd, offset - state->have, SEEK_CUR);\r
+ if (ret == -1)\r
+ return -1;\r
+ state->have = 0;\r
+ state->eof = 0;\r
+ state->seek = 0;\r
+ gz_error(state, Z_OK, NULL);\r
+ state->strm.avail_in = 0;\r
+ state->pos += offset;\r
+ return state->pos;\r
+ }\r
+\r
+ /* calculate skip amount, rewinding if needed for back seek when reading */\r
+ if (offset < 0) {\r
+ if (state->mode != GZ_READ) /* writing -- can't go backwards */\r
+ return -1;\r
+ offset += state->pos;\r
+ if (offset < 0) /* before start of file! */\r
+ return -1;\r
+ if (gzrewind(file) == -1) /* rewind, then skip to offset */\r
+ return -1;\r
+ }\r
+\r
+ /* if reading, skip what's in output buffer (one less gzgetc() check) */\r
+ if (state->mode == GZ_READ) {\r
+ n = GT_OFF(state->have) || (z_off64_t)state->have > offset ?\r
+ (unsigned)offset : state->have;\r
+ state->have -= n;\r
+ state->next += n;\r
+ state->pos += n;\r
+ offset -= n;\r
+ }\r
+\r
+ /* request skip (if not zero) */\r
+ if (offset) {\r
+ state->seek = 1;\r
+ state->skip = offset;\r
+ }\r
+ return state->pos + offset;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+z_off_t ZEXPORT gzseek(file, offset, whence)\r
+ gzFile file;\r
+ z_off_t offset;\r
+ int whence;\r
+{\r
+ z_off64_t ret;\r
+\r
+ ret = gzseek64(file, (z_off64_t)offset, whence);\r
+ return ret == (z_off_t)ret ? (z_off_t)ret : -1;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+z_off64_t ZEXPORT gztell64(file)\r
+ gzFile file;\r
+{\r
+ gz_statep state;\r
+\r
+ /* get internal structure and check integrity */\r
+ if (file == NULL)\r
+ return -1;\r
+ state = (gz_statep)file;\r
+ if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
+ return -1;\r
+\r
+ /* return position */\r
+ return state->pos + (state->seek ? state->skip : 0);\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+z_off_t ZEXPORT gztell(file)\r
+ gzFile file;\r
+{\r
+ z_off64_t ret;\r
+\r
+ ret = gztell64(file);\r
+ return ret == (z_off_t)ret ? (z_off_t)ret : -1;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+z_off64_t ZEXPORT gzoffset64(file)\r
+ gzFile file;\r
+{\r
+ z_off64_t offset;\r
+ gz_statep state;\r
+\r
+ /* get internal structure and check integrity */\r
+ if (file == NULL)\r
+ return -1;\r
+ state = (gz_statep)file;\r
+ if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
+ return -1;\r
+\r
+ /* compute and return effective offset in file */\r
+ offset = LSEEK(state->fd, 0, SEEK_CUR);\r
+ if (offset == -1)\r
+ return -1;\r
+ if (state->mode == GZ_READ) /* reading */\r
+ offset -= state->strm.avail_in; /* don't count buffered input */\r
+ return offset;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+z_off_t ZEXPORT gzoffset(file)\r
+ gzFile file;\r
+{\r
+ z_off64_t ret;\r
+\r
+ ret = gzoffset64(file);\r
+ return ret == (z_off_t)ret ? (z_off_t)ret : -1;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzeof(file)\r
+ gzFile file;\r
+{\r
+ gz_statep state;\r
+\r
+ /* get internal structure and check integrity */\r
+ if (file == NULL)\r
+ return 0;\r
+ state = (gz_statep)file;\r
+ if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
+ return 0;\r
+\r
+ /* return end-of-file state */\r
+ return state->mode == GZ_READ ?\r
+ (state->eof && state->strm.avail_in == 0 && state->have == 0) : 0;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+const char * ZEXPORT gzerror(file, errnum)\r
+ gzFile file;\r
+ int *errnum;\r
+{\r
+ gz_statep state;\r
+\r
+ /* get internal structure and check integrity */\r
+ if (file == NULL)\r
+ return NULL;\r
+ state = (gz_statep)file;\r
+ if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
+ return NULL;\r
+\r
+ /* return error information */\r
+ if (errnum != NULL)\r
+ *errnum = state->err;\r
+ return state->msg == NULL ? "" : state->msg;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+void ZEXPORT gzclearerr(file)\r
+ gzFile file;\r
+{\r
+ gz_statep state;\r
+\r
+ /* get internal structure and check integrity */\r
+ if (file == NULL)\r
+ return;\r
+ state = (gz_statep)file;\r
+ if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
+ return;\r
+\r
+ /* clear error and end-of-file */\r
+ if (state->mode == GZ_READ)\r
+ state->eof = 0;\r
+ gz_error(state, Z_OK, NULL);\r
+}\r
+\r
+/* Create an error message in allocated memory and set state->err and\r
+ state->msg accordingly. Free any previous error message already there. Do\r
+ not try to free or allocate space if the error is Z_MEM_ERROR (out of\r
+ memory). Simply save the error message as a static string. If there is an\r
+ allocation failure constructing the error message, then convert the error to\r
+ out of memory. */\r
+void ZLIB_INTERNAL gz_error(state, err, msg)\r
+ gz_statep state;\r
+ int err;\r
+ const char *msg;\r
+{\r
+ /* free previously allocated message and clear */\r
+ if (state->msg != NULL) {\r
+ if (state->err != Z_MEM_ERROR)\r
+ free(state->msg);\r
+ state->msg = NULL;\r
+ }\r
+\r
+ /* set error code, and if no message, then done */\r
+ state->err = err;\r
+ if (msg == NULL)\r
+ return;\r
+\r
+ /* for an out of memory error, save as static string */\r
+ if (err == Z_MEM_ERROR) {\r
+ state->msg = (char *)msg;\r
+ return;\r
+ }\r
+\r
+ /* construct error message with path */\r
+ if ((state->msg = malloc(strlen(state->path) + strlen(msg) + 3)) == NULL) {\r
+ state->err = Z_MEM_ERROR;\r
+ state->msg = (char *)"out of memory";\r
+ return;\r
+ }\r
+ strcpy(state->msg, state->path);\r
+ strcat(state->msg, ": ");\r
+ strcat(state->msg, msg);\r
+ return;\r
+}\r
+\r
+#ifndef INT_MAX\r
+/* portably return maximum value for an int (when limits.h presumed not\r
+ available) -- we need to do this to cover cases where 2's complement not\r
+ used, since C standard permits 1's complement and sign-bit representations,\r
+ otherwise we could just use ((unsigned)-1) >> 1 */\r
+unsigned ZLIB_INTERNAL gz_intmax()\r
+{\r
+ unsigned p, q;\r
+\r
+ p = 1;\r
+ do {\r
+ q = p;\r
+ p <<= 1;\r
+ p++;\r
+ } while (p > q);\r
+ return q >> 1;\r
+}\r
+#endif\r
--- /dev/null
+/* gzread.c -- zlib functions for reading gzip files\r
+ * Copyright (C) 2004, 2005, 2010 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+#include "gzguts.h"\r
+\r
+/* Local functions */\r
+local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *));\r
+local int gz_avail OF((gz_statep));\r
+local int gz_next4 OF((gz_statep, unsigned long *));\r
+local int gz_head OF((gz_statep));\r
+local int gz_decomp OF((gz_statep));\r
+local int gz_make OF((gz_statep));\r
+local int gz_skip OF((gz_statep, z_off64_t));\r
+\r
+/* Use read() to load a buffer -- return -1 on error, otherwise 0. Read from\r
+ state->fd, and update state->eof, state->err, and state->msg as appropriate.\r
+ This function needs to loop on read(), since read() is not guaranteed to\r
+ read the number of bytes requested, depending on the type of descriptor. */\r
+local int gz_load(state, buf, len, have)\r
+ gz_statep state;\r
+ unsigned char *buf;\r
+ unsigned len;\r
+ unsigned *have;\r
+{\r
+ int ret;\r
+\r
+ *have = 0;\r
+ do {\r
+ ret = read(state->fd, buf + *have, len - *have);\r
+ if (ret <= 0)\r
+ break;\r
+ *have += ret;\r
+ } while (*have < len);\r
+ if (ret < 0) {\r
+ gz_error(state, Z_ERRNO, zstrerror());\r
+ return -1;\r
+ }\r
+ if (ret == 0)\r
+ state->eof = 1;\r
+ return 0;\r
+}\r
+\r
+/* Load up input buffer and set eof flag if last data loaded -- return -1 on\r
+ error, 0 otherwise. Note that the eof flag is set when the end of the input\r
+ file is reached, even though there may be unused data in the buffer. Once\r
+ that data has been used, no more attempts will be made to read the file.\r
+ gz_avail() assumes that strm->avail_in == 0. */\r
+local int gz_avail(state)\r
+ gz_statep state;\r
+{\r
+ z_streamp strm = &(state->strm);\r
+\r
+ if (state->err != Z_OK)\r
+ return -1;\r
+ if (state->eof == 0) {\r
+ if (gz_load(state, state->in, state->size,\r
+ (unsigned *)&(strm->avail_in)) == -1)\r
+ return -1;\r
+ strm->next_in = state->in;\r
+ }\r
+ return 0;\r
+}\r
+\r
+/* Get next byte from input, or -1 if end or error. */\r
+#define NEXT() ((strm->avail_in == 0 && gz_avail(state) == -1) ? -1 : \\r
+ (strm->avail_in == 0 ? -1 : \\r
+ (strm->avail_in--, *(strm->next_in)++)))\r
+\r
+/* Get a four-byte little-endian integer and return 0 on success and the value\r
+ in *ret. Otherwise -1 is returned and *ret is not modified. */\r
+local int gz_next4(state, ret)\r
+ gz_statep state;\r
+ unsigned long *ret;\r
+{\r
+ int ch;\r
+ unsigned long val;\r
+ z_streamp strm = &(state->strm);\r
+\r
+ val = NEXT();\r
+ val += (unsigned)NEXT() << 8;\r
+ val += (unsigned long)NEXT() << 16;\r
+ ch = NEXT();\r
+ if (ch == -1)\r
+ return -1;\r
+ val += (unsigned long)ch << 24;\r
+ *ret = val;\r
+ return 0;\r
+}\r
+\r
+/* Look for gzip header, set up for inflate or copy. state->have must be zero.\r
+ If this is the first time in, allocate required memory. state->how will be\r
+ left unchanged if there is no more input data available, will be set to COPY\r
+ if there is no gzip header and direct copying will be performed, or it will\r
+ be set to GZIP for decompression, and the gzip header will be skipped so\r
+ that the next available input data is the raw deflate stream. If direct\r
+ copying, then leftover input data from the input buffer will be copied to\r
+ the output buffer. In that case, all further file reads will be directly to\r
+ either the output buffer or a user buffer. If decompressing, the inflate\r
+ state and the check value will be initialized. gz_head() will return 0 on\r
+ success or -1 on failure. Failures may include read errors or gzip header\r
+ errors. */\r
+local int gz_head(state)\r
+ gz_statep state;\r
+{\r
+ z_streamp strm = &(state->strm);\r
+ int flags;\r
+ unsigned len;\r
+\r
+ /* allocate read buffers and inflate memory */\r
+ if (state->size == 0) {\r
+ /* allocate buffers */\r
+ state->in = malloc(state->want);\r
+ state->out = malloc(state->want << 1);\r
+ if (state->in == NULL || state->out == NULL) {\r
+ if (state->out != NULL)\r
+ free(state->out);\r
+ if (state->in != NULL)\r
+ free(state->in);\r
+ gz_error(state, Z_MEM_ERROR, "out of memory");\r
+ return -1;\r
+ }\r
+ state->size = state->want;\r
+\r
+ /* allocate inflate memory */\r
+ state->strm.zalloc = Z_NULL;\r
+ state->strm.zfree = Z_NULL;\r
+ state->strm.opaque = Z_NULL;\r
+ state->strm.avail_in = 0;\r
+ state->strm.next_in = Z_NULL;\r
+ if (inflateInit2(&(state->strm), -15) != Z_OK) { /* raw inflate */\r
+ free(state->out);\r
+ free(state->in);\r
+ state->size = 0;\r
+ gz_error(state, Z_MEM_ERROR, "out of memory");\r
+ return -1;\r
+ }\r
+ }\r
+\r
+ /* get some data in the input buffer */\r
+ if (strm->avail_in == 0) {\r
+ if (gz_avail(state) == -1)\r
+ return -1;\r
+ if (strm->avail_in == 0)\r
+ return 0;\r
+ }\r
+\r
+ /* look for the gzip magic header bytes 31 and 139 */\r
+ if (strm->next_in[0] == 31) {\r
+ strm->avail_in--;\r
+ strm->next_in++;\r
+ if (strm->avail_in == 0 && gz_avail(state) == -1)\r
+ return -1;\r
+ if (strm->avail_in && strm->next_in[0] == 139) {\r
+ /* we have a gzip header, woo hoo! */\r
+ strm->avail_in--;\r
+ strm->next_in++;\r
+\r
+ /* skip rest of header */\r
+ if (NEXT() != 8) { /* compression method */\r
+ gz_error(state, Z_DATA_ERROR, "unknown compression method");\r
+ return -1;\r
+ }\r
+ flags = NEXT();\r
+ if (flags & 0xe0) { /* reserved flag bits */\r
+ gz_error(state, Z_DATA_ERROR, "unknown header flags set");\r
+ return -1;\r
+ }\r
+ NEXT(); /* modification time */\r
+ NEXT();\r
+ NEXT();\r
+ NEXT();\r
+ NEXT(); /* extra flags */\r
+ NEXT(); /* operating system */\r
+ if (flags & 4) { /* extra field */\r
+ len = (unsigned)NEXT();\r
+ len += (unsigned)NEXT() << 8;\r
+ while (len--)\r
+ if (NEXT() < 0)\r
+ break;\r
+ }\r
+ if (flags & 8) /* file name */\r
+ while (NEXT() > 0)\r
+ ;\r
+ if (flags & 16) /* comment */\r
+ while (NEXT() > 0)\r
+ ;\r
+ if (flags & 2) { /* header crc */\r
+ NEXT();\r
+ NEXT();\r
+ }\r
+ /* an unexpected end of file is not checked for here -- it will be\r
+ noticed on the first request for uncompressed data */\r
+\r
+ /* set up for decompression */\r
+ inflateReset(strm);\r
+ strm->adler = crc32(0L, Z_NULL, 0);\r
+ state->how = GZIP;\r
+ state->direct = 0;\r
+ return 0;\r
+ }\r
+ else {\r
+ /* not a gzip file -- save first byte (31) and fall to raw i/o */\r
+ state->out[0] = 31;\r
+ state->have = 1;\r
+ }\r
+ }\r
+\r
+ /* doing raw i/o, save start of raw data for seeking, copy any leftover\r
+ input to output -- this assumes that the output buffer is larger than\r
+ the input buffer, which also assures space for gzungetc() */\r
+ state->raw = state->pos;\r
+ state->next = state->out;\r
+ if (strm->avail_in) {\r
+ memcpy(state->next + state->have, strm->next_in, strm->avail_in);\r
+ state->have += strm->avail_in;\r
+ strm->avail_in = 0;\r
+ }\r
+ state->how = COPY;\r
+ state->direct = 1;\r
+ return 0;\r
+}\r
+\r
+/* Decompress from input to the provided next_out and avail_out in the state.\r
+ If the end of the compressed data is reached, then verify the gzip trailer\r
+ check value and length (modulo 2^32). state->have and state->next are set\r
+ to point to the just decompressed data, and the crc is updated. If the\r
+ trailer is verified, state->how is reset to LOOK to look for the next gzip\r
+ stream or raw data, once state->have is depleted. Returns 0 on success, -1\r
+ on failure. Failures may include invalid compressed data or a failed gzip\r
+ trailer verification. */\r
+local int gz_decomp(state)\r
+ gz_statep state;\r
+{\r
+ int ret;\r
+ unsigned had;\r
+ unsigned long crc, len;\r
+ z_streamp strm = &(state->strm);\r
+\r
+ /* fill output buffer up to end of deflate stream */\r
+ had = strm->avail_out;\r
+ do {\r
+ /* get more input for inflate() */\r
+ if (strm->avail_in == 0 && gz_avail(state) == -1)\r
+ return -1;\r
+ if (strm->avail_in == 0) {\r
+ gz_error(state, Z_DATA_ERROR, "unexpected end of file");\r
+ return -1;\r
+ }\r
+\r
+ /* decompress and handle errors */\r
+ ret = inflate(strm, Z_NO_FLUSH);\r
+ if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) {\r
+ gz_error(state, Z_STREAM_ERROR,\r
+ "internal error: inflate stream corrupt");\r
+ return -1;\r
+ }\r
+ if (ret == Z_MEM_ERROR) {\r
+ gz_error(state, Z_MEM_ERROR, "out of memory");\r
+ return -1;\r
+ }\r
+ if (ret == Z_DATA_ERROR) { /* deflate stream invalid */\r
+ gz_error(state, Z_DATA_ERROR,\r
+ strm->msg == NULL ? "compressed data error" : strm->msg);\r
+ return -1;\r
+ }\r
+ } while (strm->avail_out && ret != Z_STREAM_END);\r
+\r
+ /* update available output and crc check value */\r
+ state->have = had - strm->avail_out;\r
+ state->next = strm->next_out - state->have;\r
+ strm->adler = crc32(strm->adler, state->next, state->have);\r
+\r
+ /* check gzip trailer if at end of deflate stream */\r
+ if (ret == Z_STREAM_END) {\r
+ if (gz_next4(state, &crc) == -1 || gz_next4(state, &len) == -1) {\r
+ gz_error(state, Z_DATA_ERROR, "unexpected end of file");\r
+ return -1;\r
+ }\r
+ if (crc != strm->adler) {\r
+ gz_error(state, Z_DATA_ERROR, "incorrect data check");\r
+ return -1;\r
+ }\r
+ if (len != (strm->total_out & 0xffffffffL)) {\r
+ gz_error(state, Z_DATA_ERROR, "incorrect length check");\r
+ return -1;\r
+ }\r
+ state->how = LOOK; /* ready for next stream, once have is 0 (leave\r
+ state->direct unchanged to remember how) */\r
+ }\r
+\r
+ /* good decompression */\r
+ return 0;\r
+}\r
+\r
+/* Make data and put in the output buffer. Assumes that state->have == 0.\r
+ Data is either copied from the input file or decompressed from the input\r
+ file depending on state->how. If state->how is LOOK, then a gzip header is\r
+ looked for (and skipped if found) to determine wither to copy or decompress.\r
+ Returns -1 on error, otherwise 0. gz_make() will leave state->have as COPY\r
+ or GZIP unless the end of the input file has been reached and all data has\r
+ been processed. */\r
+local int gz_make(state)\r
+ gz_statep state;\r
+{\r
+ z_streamp strm = &(state->strm);\r
+\r
+ if (state->how == LOOK) { /* look for gzip header */\r
+ if (gz_head(state) == -1)\r
+ return -1;\r
+ if (state->have) /* got some data from gz_head() */\r
+ return 0;\r
+ }\r
+ if (state->how == COPY) { /* straight copy */\r
+ if (gz_load(state, state->out, state->size << 1, &(state->have)) == -1)\r
+ return -1;\r
+ state->next = state->out;\r
+ }\r
+ else if (state->how == GZIP) { /* decompress */\r
+ strm->avail_out = state->size << 1;\r
+ strm->next_out = state->out;\r
+ if (gz_decomp(state) == -1)\r
+ return -1;\r
+ }\r
+ return 0;\r
+}\r
+\r
+/* Skip len uncompressed bytes of output. Return -1 on error, 0 on success. */\r
+local int gz_skip(state, len)\r
+ gz_statep state;\r
+ z_off64_t len;\r
+{\r
+ unsigned n;\r
+\r
+ /* skip over len bytes or reach end-of-file, whichever comes first */\r
+ while (len)\r
+ /* skip over whatever is in output buffer */\r
+ if (state->have) {\r
+ n = GT_OFF(state->have) || (z_off64_t)state->have > len ?\r
+ (unsigned)len : state->have;\r
+ state->have -= n;\r
+ state->next += n;\r
+ state->pos += n;\r
+ len -= n;\r
+ }\r
+\r
+ /* output buffer empty -- return if we're at the end of the input */\r
+ else if (state->eof && state->strm.avail_in == 0)\r
+ break;\r
+\r
+ /* need more data to skip -- load up output buffer */\r
+ else {\r
+ /* get more output, looking for header if required */\r
+ if (gz_make(state) == -1)\r
+ return -1;\r
+ }\r
+ return 0;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzread(file, buf, len)\r
+ gzFile file;\r
+ voidp buf;\r
+ unsigned len;\r
+{\r
+ unsigned got, n;\r
+ gz_statep state;\r
+ z_streamp strm;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return -1;\r
+ state = (gz_statep)file;\r
+ strm = &(state->strm);\r
+\r
+ /* check that we're reading and that there's no error */\r
+ if (state->mode != GZ_READ || state->err != Z_OK)\r
+ return -1;\r
+\r
+ /* since an int is returned, make sure len fits in one, otherwise return\r
+ with an error (this avoids the flaw in the interface) */\r
+ if ((int)len < 0) {\r
+ gz_error(state, Z_BUF_ERROR, "requested length does not fit in int");\r
+ return -1;\r
+ }\r
+\r
+ /* if len is zero, avoid unnecessary operations */\r
+ if (len == 0)\r
+ return 0;\r
+\r
+ /* process a skip request */\r
+ if (state->seek) {\r
+ state->seek = 0;\r
+ if (gz_skip(state, state->skip) == -1)\r
+ return -1;\r
+ }\r
+\r
+ /* get len bytes to buf, or less than len if at the end */\r
+ got = 0;\r
+ do {\r
+ /* first just try copying data from the output buffer */\r
+ if (state->have) {\r
+ n = state->have > len ? len : state->have;\r
+ memcpy(buf, state->next, n);\r
+ state->next += n;\r
+ state->have -= n;\r
+ }\r
+\r
+ /* output buffer empty -- return if we're at the end of the input */\r
+ else if (state->eof && strm->avail_in == 0)\r
+ break;\r
+\r
+ /* need output data -- for small len or new stream load up our output\r
+ buffer */\r
+ else if (state->how == LOOK || len < (state->size << 1)) {\r
+ /* get more output, looking for header if required */\r
+ if (gz_make(state) == -1)\r
+ return -1;\r
+ continue; /* no progress yet -- go back to memcpy() above */\r
+ /* the copy above assures that we will leave with space in the\r
+ output buffer, allowing at least one gzungetc() to succeed */\r
+ }\r
+\r
+ /* large len -- read directly into user buffer */\r
+ else if (state->how == COPY) { /* read directly */\r
+ if (gz_load(state, buf, len, &n) == -1)\r
+ return -1;\r
+ }\r
+\r
+ /* large len -- decompress directly into user buffer */\r
+ else { /* state->how == GZIP */\r
+ strm->avail_out = len;\r
+ strm->next_out = buf;\r
+ if (gz_decomp(state) == -1)\r
+ return -1;\r
+ n = state->have;\r
+ state->have = 0;\r
+ }\r
+\r
+ /* update progress */\r
+ len -= n;\r
+ buf = (char *)buf + n;\r
+ got += n;\r
+ state->pos += n;\r
+ } while (len);\r
+\r
+ /* return number of bytes read into user buffer (will fit in int) */\r
+ return (int)got;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzgetc(file)\r
+ gzFile file;\r
+{\r
+ int ret;\r
+ unsigned char buf[1];\r
+ gz_statep state;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return -1;\r
+ state = (gz_statep)file;\r
+\r
+ /* check that we're reading and that there's no error */\r
+ if (state->mode != GZ_READ || state->err != Z_OK)\r
+ return -1;\r
+\r
+ /* try output buffer (no need to check for skip request) */\r
+ if (state->have) {\r
+ state->have--;\r
+ state->pos++;\r
+ return *(state->next)++;\r
+ }\r
+\r
+ /* nothing there -- try gzread() */\r
+ ret = gzread(file, buf, 1);\r
+ return ret < 1 ? -1 : buf[0];\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzungetc(c, file)\r
+ int c;\r
+ gzFile file;\r
+{\r
+ gz_statep state;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return -1;\r
+ state = (gz_statep)file;\r
+\r
+ /* check that we're reading and that there's no error */\r
+ if (state->mode != GZ_READ || state->err != Z_OK)\r
+ return -1;\r
+\r
+ /* process a skip request */\r
+ if (state->seek) {\r
+ state->seek = 0;\r
+ if (gz_skip(state, state->skip) == -1)\r
+ return -1;\r
+ }\r
+\r
+ /* can't push EOF */\r
+ if (c < 0)\r
+ return -1;\r
+\r
+ /* if output buffer empty, put byte at end (allows more pushing) */\r
+ if (state->have == 0) {\r
+ state->have = 1;\r
+ state->next = state->out + (state->size << 1) - 1;\r
+ state->next[0] = c;\r
+ state->pos--;\r
+ return c;\r
+ }\r
+\r
+ /* if no room, give up (must have already done a gzungetc()) */\r
+ if (state->have == (state->size << 1)) {\r
+ gz_error(state, Z_BUF_ERROR, "out of room to push characters");\r
+ return -1;\r
+ }\r
+\r
+ /* slide output data if needed and insert byte before existing data */\r
+ if (state->next == state->out) {\r
+ unsigned char *src = state->out + state->have;\r
+ unsigned char *dest = state->out + (state->size << 1);\r
+ while (src > state->out)\r
+ *--dest = *--src;\r
+ state->next = dest;\r
+ }\r
+ state->have++;\r
+ state->next--;\r
+ state->next[0] = c;\r
+ state->pos--;\r
+ return c;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+char * ZEXPORT gzgets(file, buf, len)\r
+ gzFile file;\r
+ char *buf;\r
+ int len;\r
+{\r
+ unsigned left, n;\r
+ char *str;\r
+ unsigned char *eol;\r
+ gz_statep state;\r
+\r
+ /* check parameters and get internal structure */\r
+ if (file == NULL || buf == NULL || len < 1)\r
+ return NULL;\r
+ state = (gz_statep)file;\r
+\r
+ /* check that we're reading and that there's no error */\r
+ if (state->mode != GZ_READ || state->err != Z_OK)\r
+ return NULL;\r
+\r
+ /* process a skip request */\r
+ if (state->seek) {\r
+ state->seek = 0;\r
+ if (gz_skip(state, state->skip) == -1)\r
+ return NULL;\r
+ }\r
+\r
+ /* copy output bytes up to new line or len - 1, whichever comes first --\r
+ append a terminating zero to the string (we don't check for a zero in\r
+ the contents, let the user worry about that) */\r
+ str = buf;\r
+ left = (unsigned)len - 1;\r
+ if (left) do {\r
+ /* assure that something is in the output buffer */\r
+ if (state->have == 0) {\r
+ if (gz_make(state) == -1)\r
+ return NULL; /* error */\r
+ if (state->have == 0) { /* end of file */\r
+ if (buf == str) /* got bupkus */\r
+ return NULL;\r
+ break; /* got something -- return it */\r
+ }\r
+ }\r
+\r
+ /* look for end-of-line in current output buffer */\r
+ n = state->have > left ? left : state->have;\r
+ eol = memchr(state->next, '\n', n);\r
+ if (eol != NULL)\r
+ n = (unsigned)(eol - state->next) + 1;\r
+\r
+ /* copy through end-of-line, or remainder if not found */\r
+ memcpy(buf, state->next, n);\r
+ state->have -= n;\r
+ state->next += n;\r
+ state->pos += n;\r
+ left -= n;\r
+ buf += n;\r
+ } while (left && eol == NULL);\r
+\r
+ /* found end-of-line or out of space -- terminate string and return it */\r
+ buf[0] = 0;\r
+ return str;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzdirect(file)\r
+ gzFile file;\r
+{\r
+ gz_statep state;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return 0;\r
+ state = (gz_statep)file;\r
+\r
+ /* check that we're reading */\r
+ if (state->mode != GZ_READ)\r
+ return 0;\r
+\r
+ /* if the state is not known, but we can find out, then do so (this is\r
+ mainly for right after a gzopen() or gzdopen()) */\r
+ if (state->how == LOOK && state->have == 0)\r
+ (void)gz_head(state);\r
+\r
+ /* return 1 if reading direct, 0 if decompressing a gzip stream */\r
+ return state->direct;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzclose_r(file)\r
+ gzFile file;\r
+{\r
+ int ret;\r
+ gz_statep state;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return Z_STREAM_ERROR;\r
+ state = (gz_statep)file;\r
+\r
+ /* check that we're reading */\r
+ if (state->mode != GZ_READ)\r
+ return Z_STREAM_ERROR;\r
+\r
+ /* free memory and close file */\r
+ if (state->size) {\r
+ inflateEnd(&(state->strm));\r
+ free(state->out);\r
+ free(state->in);\r
+ }\r
+ gz_error(state, Z_OK, NULL);\r
+ free(state->path);\r
+ ret = close(state->fd);\r
+ free(state);\r
+ return ret ? Z_ERRNO : Z_OK;\r
+}\r
--- /dev/null
+/* gzwrite.c -- zlib functions for writing gzip files\r
+ * Copyright (C) 2004, 2005, 2010 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+#include "gzguts.h"\r
+\r
+/* Local functions */\r
+local int gz_init OF((gz_statep));\r
+local int gz_comp OF((gz_statep, int));\r
+local int gz_zero OF((gz_statep, z_off64_t));\r
+\r
+/* Initialize state for writing a gzip file. Mark initialization by setting\r
+ state->size to non-zero. Return -1 on failure or 0 on success. */\r
+local int gz_init(state)\r
+ gz_statep state;\r
+{\r
+ int ret;\r
+ z_streamp strm = &(state->strm);\r
+\r
+ /* allocate input and output buffers */\r
+ state->in = malloc(state->want);\r
+ state->out = malloc(state->want);\r
+ if (state->in == NULL || state->out == NULL) {\r
+ if (state->out != NULL)\r
+ free(state->out);\r
+ if (state->in != NULL)\r
+ free(state->in);\r
+ gz_error(state, Z_MEM_ERROR, "out of memory");\r
+ return -1;\r
+ }\r
+\r
+ /* allocate deflate memory, set up for gzip compression */\r
+ strm->zalloc = Z_NULL;\r
+ strm->zfree = Z_NULL;\r
+ strm->opaque = Z_NULL;\r
+ ret = deflateInit2(strm, state->level, Z_DEFLATED,\r
+ 15 + 16, 8, state->strategy);\r
+ if (ret != Z_OK) {\r
+ free(state->in);\r
+ gz_error(state, Z_MEM_ERROR, "out of memory");\r
+ return -1;\r
+ }\r
+\r
+ /* mark state as initialized */\r
+ state->size = state->want;\r
+\r
+ /* initialize write buffer */\r
+ strm->avail_out = state->size;\r
+ strm->next_out = state->out;\r
+ state->next = strm->next_out;\r
+ return 0;\r
+}\r
+\r
+/* Compress whatever is at avail_in and next_in and write to the output file.\r
+ Return -1 if there is an error writing to the output file, otherwise 0.\r
+ flush is assumed to be a valid deflate() flush value. If flush is Z_FINISH,\r
+ then the deflate() state is reset to start a new gzip stream. */\r
+local int gz_comp(state, flush)\r
+ gz_statep state;\r
+ int flush;\r
+{\r
+ int ret, got;\r
+ unsigned have;\r
+ z_streamp strm = &(state->strm);\r
+\r
+ /* allocate memory if this is the first time through */\r
+ if (state->size == 0 && gz_init(state) == -1)\r
+ return -1;\r
+\r
+ /* run deflate() on provided input until it produces no more output */\r
+ ret = Z_OK;\r
+ do {\r
+ /* write out current buffer contents if full, or if flushing, but if\r
+ doing Z_FINISH then don't write until we get to Z_STREAM_END */\r
+ if (strm->avail_out == 0 || (flush != Z_NO_FLUSH &&\r
+ (flush != Z_FINISH || ret == Z_STREAM_END))) {\r
+ have = (unsigned)(strm->next_out - state->next);\r
+ if (have && ((got = write(state->fd, state->next, have)) < 0 ||\r
+ (unsigned)got != have)) {\r
+ gz_error(state, Z_ERRNO, zstrerror());\r
+ return -1;\r
+ }\r
+ if (strm->avail_out == 0) {\r
+ strm->avail_out = state->size;\r
+ strm->next_out = state->out;\r
+ }\r
+ state->next = strm->next_out;\r
+ }\r
+\r
+ /* compress */\r
+ have = strm->avail_out;\r
+ ret = deflate(strm, flush);\r
+ if (ret == Z_STREAM_ERROR) {\r
+ gz_error(state, Z_STREAM_ERROR,\r
+ "internal error: deflate stream corrupt");\r
+ return -1;\r
+ }\r
+ have -= strm->avail_out;\r
+ } while (have);\r
+\r
+ /* if that completed a deflate stream, allow another to start */\r
+ if (flush == Z_FINISH)\r
+ deflateReset(strm);\r
+\r
+ /* all done, no errors */\r
+ return 0;\r
+}\r
+\r
+/* Compress len zeros to output. Return -1 on error, 0 on success. */\r
+local int gz_zero(state, len)\r
+ gz_statep state;\r
+ z_off64_t len;\r
+{\r
+ int first;\r
+ unsigned n;\r
+ z_streamp strm = &(state->strm);\r
+\r
+ /* consume whatever's left in the input buffer */\r
+ if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)\r
+ return -1;\r
+\r
+ /* compress len zeros (len guaranteed > 0) */\r
+ first = 1;\r
+ while (len) {\r
+ n = GT_OFF(state->size) || (z_off64_t)state->size > len ?\r
+ (unsigned)len : state->size;\r
+ if (first) {\r
+ memset(state->in, 0, n);\r
+ first = 0;\r
+ }\r
+ strm->avail_in = n;\r
+ strm->next_in = state->in;\r
+ state->pos += n;\r
+ if (gz_comp(state, Z_NO_FLUSH) == -1)\r
+ return -1;\r
+ len -= n;\r
+ }\r
+ return 0;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzwrite(file, buf, len)\r
+ gzFile file;\r
+ voidpc buf;\r
+ unsigned len;\r
+{\r
+ unsigned put = len;\r
+ unsigned n;\r
+ gz_statep state;\r
+ z_streamp strm;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return 0;\r
+ state = (gz_statep)file;\r
+ strm = &(state->strm);\r
+\r
+ /* check that we're writing and that there's no error */\r
+ if (state->mode != GZ_WRITE || state->err != Z_OK)\r
+ return 0;\r
+\r
+ /* since an int is returned, make sure len fits in one, otherwise return\r
+ with an error (this avoids the flaw in the interface) */\r
+ if ((int)len < 0) {\r
+ gz_error(state, Z_BUF_ERROR, "requested length does not fit in int");\r
+ return 0;\r
+ }\r
+\r
+ /* if len is zero, avoid unnecessary operations */\r
+ if (len == 0)\r
+ return 0;\r
+\r
+ /* allocate memory if this is the first time through */\r
+ if (state->size == 0 && gz_init(state) == -1)\r
+ return 0;\r
+\r
+ /* check for seek request */\r
+ if (state->seek) {\r
+ state->seek = 0;\r
+ if (gz_zero(state, state->skip) == -1)\r
+ return 0;\r
+ }\r
+\r
+ /* for small len, copy to input buffer, otherwise compress directly */\r
+ if (len < state->size) {\r
+ /* copy to input buffer, compress when full */\r
+ do {\r
+ if (strm->avail_in == 0)\r
+ strm->next_in = state->in;\r
+ n = state->size - strm->avail_in;\r
+ if (n > len)\r
+ n = len;\r
+ memcpy(strm->next_in + strm->avail_in, buf, n);\r
+ strm->avail_in += n;\r
+ state->pos += n;\r
+ buf = (char *)buf + n;\r
+ len -= n;\r
+ if (len && gz_comp(state, Z_NO_FLUSH) == -1)\r
+ return 0;\r
+ } while (len);\r
+ }\r
+ else {\r
+ /* consume whatever's left in the input buffer */\r
+ if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)\r
+ return 0;\r
+\r
+ /* directly compress user buffer to file */\r
+ strm->avail_in = len;\r
+ strm->next_in = (voidp)buf;\r
+ state->pos += len;\r
+ if (gz_comp(state, Z_NO_FLUSH) == -1)\r
+ return 0;\r
+ }\r
+\r
+ /* input was all buffered or compressed (put will fit in int) */\r
+ return (int)put;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzputc(file, c)\r
+ gzFile file;\r
+ int c;\r
+{\r
+ unsigned char buf[1];\r
+ gz_statep state;\r
+ z_streamp strm;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return -1;\r
+ state = (gz_statep)file;\r
+ strm = &(state->strm);\r
+\r
+ /* check that we're writing and that there's no error */\r
+ if (state->mode != GZ_WRITE || state->err != Z_OK)\r
+ return -1;\r
+\r
+ /* check for seek request */\r
+ if (state->seek) {\r
+ state->seek = 0;\r
+ if (gz_zero(state, state->skip) == -1)\r
+ return -1;\r
+ }\r
+\r
+ /* try writing to input buffer for speed (state->size == 0 if buffer not\r
+ initialized) */\r
+ if (strm->avail_in < state->size) {\r
+ if (strm->avail_in == 0)\r
+ strm->next_in = state->in;\r
+ strm->next_in[strm->avail_in++] = c;\r
+ state->pos++;\r
+ return c;\r
+ }\r
+\r
+ /* no room in buffer or not initialized, use gz_write() */\r
+ buf[0] = c;\r
+ if (gzwrite(file, buf, 1) != 1)\r
+ return -1;\r
+ return c;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzputs(file, str)\r
+ gzFile file;\r
+ const char *str;\r
+{\r
+ int ret;\r
+ unsigned len;\r
+\r
+ /* write string */\r
+ len = (unsigned)strlen(str);\r
+ ret = gzwrite(file, str, len);\r
+ return ret == 0 && len != 0 ? -1 : ret;\r
+}\r
+\r
+#ifdef STDC\r
+#include <stdarg.h>\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORTVA gzprintf (gzFile file, const char *format, ...)\r
+{\r
+ int size, len;\r
+ gz_statep state;\r
+ z_streamp strm;\r
+ va_list va;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return -1;\r
+ state = (gz_statep)file;\r
+ strm = &(state->strm);\r
+\r
+ /* check that we're writing and that there's no error */\r
+ if (state->mode != GZ_WRITE || state->err != Z_OK)\r
+ return 0;\r
+\r
+ /* make sure we have some buffer space */\r
+ if (state->size == 0 && gz_init(state) == -1)\r
+ return 0;\r
+\r
+ /* check for seek request */\r
+ if (state->seek) {\r
+ state->seek = 0;\r
+ if (gz_zero(state, state->skip) == -1)\r
+ return 0;\r
+ }\r
+\r
+ /* consume whatever's left in the input buffer */\r
+ if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)\r
+ return 0;\r
+\r
+ /* do the printf() into the input buffer, put length in len */\r
+ size = (int)(state->size);\r
+ state->in[size - 1] = 0;\r
+ va_start(va, format);\r
+#ifdef NO_vsnprintf\r
+# ifdef HAS_vsprintf_void\r
+ (void)vsprintf(state->in, format, va);\r
+ va_end(va);\r
+ for (len = 0; len < size; len++)\r
+ if (state->in[len] == 0) break;\r
+# else\r
+ len = vsprintf(state->in, format, va);\r
+ va_end(va);\r
+# endif\r
+#else\r
+# ifdef HAS_vsnprintf_void\r
+ (void)vsnprintf(state->in, size, format, va);\r
+ va_end(va);\r
+ len = strlen(state->in);\r
+# else\r
+ len = vsnprintf((char *)(state->in), size, format, va);\r
+ va_end(va);\r
+# endif\r
+#endif\r
+\r
+ /* check that printf() results fit in buffer */\r
+ if (len <= 0 || len >= (int)size || state->in[size - 1] != 0)\r
+ return 0;\r
+\r
+ /* update buffer and position, defer compression until needed */\r
+ strm->avail_in = (unsigned)len;\r
+ strm->next_in = state->in;\r
+ state->pos += len;\r
+ return len;\r
+}\r
+\r
+#else /* !STDC */\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,\r
+ a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)\r
+ gzFile file;\r
+ const char *format;\r
+ int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,\r
+ a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;\r
+{\r
+ int size, len;\r
+ gz_statep state;\r
+ z_streamp strm;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return -1;\r
+ state = (gz_statep)file;\r
+ strm = &(state->strm);\r
+\r
+ /* check that we're writing and that there's no error */\r
+ if (state->mode != GZ_WRITE || state->err != Z_OK)\r
+ return 0;\r
+\r
+ /* make sure we have some buffer space */\r
+ if (state->size == 0 && gz_init(state) == -1)\r
+ return 0;\r
+\r
+ /* check for seek request */\r
+ if (state->seek) {\r
+ state->seek = 0;\r
+ if (gz_zero(state, state->skip) == -1)\r
+ return 0;\r
+ }\r
+\r
+ /* consume whatever's left in the input buffer */\r
+ if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)\r
+ return 0;\r
+\r
+ /* do the printf() into the input buffer, put length in len */\r
+ size = (int)(state->size);\r
+ state->in[size - 1] = 0;\r
+#ifdef NO_snprintf\r
+# ifdef HAS_sprintf_void\r
+ sprintf(state->in, format, a1, a2, a3, a4, a5, a6, a7, a8,\r
+ a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);\r
+ for (len = 0; len < size; len++)\r
+ if (state->in[len] == 0) break;\r
+# else\r
+ len = sprintf(state->in, format, a1, a2, a3, a4, a5, a6, a7, a8,\r
+ a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);\r
+# endif\r
+#else\r
+# ifdef HAS_snprintf_void\r
+ snprintf(state->in, size, format, a1, a2, a3, a4, a5, a6, a7, a8,\r
+ a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);\r
+ len = strlen(state->in);\r
+# else\r
+ len = snprintf(state->in, size, format, a1, a2, a3, a4, a5, a6, a7, a8,\r
+ a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);\r
+# endif\r
+#endif\r
+\r
+ /* check that printf() results fit in buffer */\r
+ if (len <= 0 || len >= (int)size || state->in[size - 1] != 0)\r
+ return 0;\r
+\r
+ /* update buffer and position, defer compression until needed */\r
+ strm->avail_in = (unsigned)len;\r
+ strm->next_in = state->in;\r
+ state->pos += len;\r
+ return len;\r
+}\r
+\r
+#endif\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzflush(file, flush)\r
+ gzFile file;\r
+ int flush;\r
+{\r
+ gz_statep state;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return -1;\r
+ state = (gz_statep)file;\r
+\r
+ /* check that we're writing and that there's no error */\r
+ if (state->mode != GZ_WRITE || state->err != Z_OK)\r
+ return Z_STREAM_ERROR;\r
+\r
+ /* check flush parameter */\r
+ if (flush < 0 || flush > Z_FINISH)\r
+ return Z_STREAM_ERROR;\r
+\r
+ /* check for seek request */\r
+ if (state->seek) {\r
+ state->seek = 0;\r
+ if (gz_zero(state, state->skip) == -1)\r
+ return -1;\r
+ }\r
+\r
+ /* compress remaining data with requested flush */\r
+ gz_comp(state, flush);\r
+ return state->err;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzsetparams(file, level, strategy)\r
+ gzFile file;\r
+ int level;\r
+ int strategy;\r
+{\r
+ gz_statep state;\r
+ z_streamp strm;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return Z_STREAM_ERROR;\r
+ state = (gz_statep)file;\r
+ strm = &(state->strm);\r
+\r
+ /* check that we're writing and that there's no error */\r
+ if (state->mode != GZ_WRITE || state->err != Z_OK)\r
+ return Z_STREAM_ERROR;\r
+\r
+ /* if no change is requested, then do nothing */\r
+ if (level == state->level && strategy == state->strategy)\r
+ return Z_OK;\r
+\r
+ /* check for seek request */\r
+ if (state->seek) {\r
+ state->seek = 0;\r
+ if (gz_zero(state, state->skip) == -1)\r
+ return -1;\r
+ }\r
+\r
+ /* change compression parameters for subsequent input */\r
+ if (state->size) {\r
+ /* flush previous input with previous parameters before changing */\r
+ if (strm->avail_in && gz_comp(state, Z_PARTIAL_FLUSH) == -1)\r
+ return state->err;\r
+ deflateParams(strm, level, strategy);\r
+ }\r
+ state->level = level;\r
+ state->strategy = strategy;\r
+ return Z_OK;\r
+}\r
+\r
+/* -- see zlib.h -- */\r
+int ZEXPORT gzclose_w(file)\r
+ gzFile file;\r
+{\r
+ int ret = 0;\r
+ gz_statep state;\r
+\r
+ /* get internal structure */\r
+ if (file == NULL)\r
+ return Z_STREAM_ERROR;\r
+ state = (gz_statep)file;\r
+\r
+ /* check that we're writing */\r
+ if (state->mode != GZ_WRITE)\r
+ return Z_STREAM_ERROR;\r
+\r
+ /* check for seek request */\r
+ if (state->seek) {\r
+ state->seek = 0;\r
+ ret += gz_zero(state, state->skip);\r
+ }\r
+\r
+ /* flush, free memory, and close file */\r
+ ret += gz_comp(state, Z_FINISH);\r
+ (void)deflateEnd(&(state->strm));\r
+ free(state->out);\r
+ free(state->in);\r
+ gz_error(state, Z_OK, NULL);\r
+ free(state->path);\r
+ ret += close(state->fd);\r
+ free(state);\r
+ return ret ? Z_ERRNO : Z_OK;\r
+}\r
--- /dev/null
+/* infback.c -- inflate using a call-back interface\r
+ * Copyright (C) 1995-2009 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/*\r
+ This code is largely copied from inflate.c. Normally either infback.o or\r
+ inflate.o would be linked into an application--not both. The interface\r
+ with inffast.c is retained so that optimized assembler-coded versions of\r
+ inflate_fast() can be used with either inflate.c or infback.c.\r
+ */\r
+\r
+#include "zutil.h"\r
+#include "inftrees.h"\r
+#include "inflate.h"\r
+#include "inffast.h"\r
+\r
+/* function prototypes */\r
+local void fixedtables OF((struct inflate_state FAR *state));\r
+\r
+/*\r
+ strm provides memory allocation functions in zalloc and zfree, or\r
+ Z_NULL to use the library memory allocation functions.\r
+\r
+ windowBits is in the range 8..15, and window is a user-supplied\r
+ window and output buffer that is 2**windowBits bytes.\r
+ */\r
+int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size)\r
+z_streamp strm;\r
+int windowBits;\r
+unsigned char FAR *window;\r
+const char *version;\r
+int stream_size;\r
+{\r
+ struct inflate_state FAR *state;\r
+\r
+ if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||\r
+ stream_size != (int)(sizeof(z_stream)))\r
+ return Z_VERSION_ERROR;\r
+ if (strm == Z_NULL || window == Z_NULL ||\r
+ windowBits < 8 || windowBits > 15)\r
+ return Z_STREAM_ERROR;\r
+ strm->msg = Z_NULL; /* in case we return an error */\r
+ if (strm->zalloc == (alloc_func)0) {\r
+ strm->zalloc = zcalloc;\r
+ strm->opaque = (voidpf)0;\r
+ }\r
+ if (strm->zfree == (free_func)0) strm->zfree = zcfree;\r
+ state = (struct inflate_state FAR *)ZALLOC(strm, 1,\r
+ sizeof(struct inflate_state));\r
+ if (state == Z_NULL) return Z_MEM_ERROR;\r
+ Tracev((stderr, "inflate: allocated\n"));\r
+ strm->state = (struct internal_state FAR *)state;\r
+ state->dmax = 32768U;\r
+ state->wbits = windowBits;\r
+ state->wsize = 1U << windowBits;\r
+ state->window = window;\r
+ state->wnext = 0;\r
+ state->whave = 0;\r
+ return Z_OK;\r
+}\r
+\r
+/*\r
+ Return state with length and distance decoding tables and index sizes set to\r
+ fixed code decoding. Normally this returns fixed tables from inffixed.h.\r
+ If BUILDFIXED is defined, then instead this routine builds the tables the\r
+ first time it's called, and returns those tables the first time and\r
+ thereafter. This reduces the size of the code by about 2K bytes, in\r
+ exchange for a little execution time. However, BUILDFIXED should not be\r
+ used for threaded applications, since the rewriting of the tables and virgin\r
+ may not be thread-safe.\r
+ */\r
+local void fixedtables(state)\r
+struct inflate_state FAR *state;\r
+{\r
+#ifdef BUILDFIXED\r
+ static int virgin = 1;\r
+ static code *lenfix, *distfix;\r
+ static code fixed[544];\r
+\r
+ /* build fixed huffman tables if first call (may not be thread safe) */\r
+ if (virgin) {\r
+ unsigned sym, bits;\r
+ static code *next;\r
+\r
+ /* literal/length table */\r
+ sym = 0;\r
+ while (sym < 144) state->lens[sym++] = 8;\r
+ while (sym < 256) state->lens[sym++] = 9;\r
+ while (sym < 280) state->lens[sym++] = 7;\r
+ while (sym < 288) state->lens[sym++] = 8;\r
+ next = fixed;\r
+ lenfix = next;\r
+ bits = 9;\r
+ inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);\r
+\r
+ /* distance table */\r
+ sym = 0;\r
+ while (sym < 32) state->lens[sym++] = 5;\r
+ distfix = next;\r
+ bits = 5;\r
+ inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);\r
+\r
+ /* do this just once */\r
+ virgin = 0;\r
+ }\r
+#else /* !BUILDFIXED */\r
+# include "inffixed.h"\r
+#endif /* BUILDFIXED */\r
+ state->lencode = lenfix;\r
+ state->lenbits = 9;\r
+ state->distcode = distfix;\r
+ state->distbits = 5;\r
+}\r
+\r
+/* Macros for inflateBack(): */\r
+\r
+/* Load returned state from inflate_fast() */\r
+#define LOAD() \\r
+ do { \\r
+ put = strm->next_out; \\r
+ left = strm->avail_out; \\r
+ next = strm->next_in; \\r
+ have = strm->avail_in; \\r
+ hold = state->hold; \\r
+ bits = state->bits; \\r
+ } while (0)\r
+\r
+/* Set state from registers for inflate_fast() */\r
+#define RESTORE() \\r
+ do { \\r
+ strm->next_out = put; \\r
+ strm->avail_out = left; \\r
+ strm->next_in = next; \\r
+ strm->avail_in = have; \\r
+ state->hold = hold; \\r
+ state->bits = bits; \\r
+ } while (0)\r
+\r
+/* Clear the input bit accumulator */\r
+#define INITBITS() \\r
+ do { \\r
+ hold = 0; \\r
+ bits = 0; \\r
+ } while (0)\r
+\r
+/* Assure that some input is available. If input is requested, but denied,\r
+ then return a Z_BUF_ERROR from inflateBack(). */\r
+#define PULL() \\r
+ do { \\r
+ if (have == 0) { \\r
+ have = in(in_desc, &next); \\r
+ if (have == 0) { \\r
+ next = Z_NULL; \\r
+ ret = Z_BUF_ERROR; \\r
+ goto inf_leave; \\r
+ } \\r
+ } \\r
+ } while (0)\r
+\r
+/* Get a byte of input into the bit accumulator, or return from inflateBack()\r
+ with an error if there is no input available. */\r
+#define PULLBYTE() \\r
+ do { \\r
+ PULL(); \\r
+ have--; \\r
+ hold += (unsigned long)(*next++) << bits; \\r
+ bits += 8; \\r
+ } while (0)\r
+\r
+/* Assure that there are at least n bits in the bit accumulator. If there is\r
+ not enough available input to do that, then return from inflateBack() with\r
+ an error. */\r
+#define NEEDBITS(n) \\r
+ do { \\r
+ while (bits < (unsigned)(n)) \\r
+ PULLBYTE(); \\r
+ } while (0)\r
+\r
+/* Return the low n bits of the bit accumulator (n < 16) */\r
+#define BITS(n) \\r
+ ((unsigned)hold & ((1U << (n)) - 1))\r
+\r
+/* Remove n bits from the bit accumulator */\r
+#define DROPBITS(n) \\r
+ do { \\r
+ hold >>= (n); \\r
+ bits -= (unsigned)(n); \\r
+ } while (0)\r
+\r
+/* Remove zero to seven bits as needed to go to a byte boundary */\r
+#define BYTEBITS() \\r
+ do { \\r
+ hold >>= bits & 7; \\r
+ bits -= bits & 7; \\r
+ } while (0)\r
+\r
+/* Assure that some output space is available, by writing out the window\r
+ if it's full. If the write fails, return from inflateBack() with a\r
+ Z_BUF_ERROR. */\r
+#define ROOM() \\r
+ do { \\r
+ if (left == 0) { \\r
+ put = state->window; \\r
+ left = state->wsize; \\r
+ state->whave = left; \\r
+ if (out(out_desc, put, left)) { \\r
+ ret = Z_BUF_ERROR; \\r
+ goto inf_leave; \\r
+ } \\r
+ } \\r
+ } while (0)\r
+\r
+/*\r
+ strm provides the memory allocation functions and window buffer on input,\r
+ and provides information on the unused input on return. For Z_DATA_ERROR\r
+ returns, strm will also provide an error message.\r
+\r
+ in() and out() are the call-back input and output functions. When\r
+ inflateBack() needs more input, it calls in(). When inflateBack() has\r
+ filled the window with output, or when it completes with data in the\r
+ window, it calls out() to write out the data. The application must not\r
+ change the provided input until in() is called again or inflateBack()\r
+ returns. The application must not change the window/output buffer until\r
+ inflateBack() returns.\r
+\r
+ in() and out() are called with a descriptor parameter provided in the\r
+ inflateBack() call. This parameter can be a structure that provides the\r
+ information required to do the read or write, as well as accumulated\r
+ information on the input and output such as totals and check values.\r
+\r
+ in() should return zero on failure. out() should return non-zero on\r
+ failure. If either in() or out() fails, than inflateBack() returns a\r
+ Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it\r
+ was in() or out() that caused in the error. Otherwise, inflateBack()\r
+ returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format\r
+ error, or Z_MEM_ERROR if it could not allocate memory for the state.\r
+ inflateBack() can also return Z_STREAM_ERROR if the input parameters\r
+ are not correct, i.e. strm is Z_NULL or the state was not initialized.\r
+ */\r
+int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc)\r
+z_streamp strm;\r
+in_func in;\r
+void FAR *in_desc;\r
+out_func out;\r
+void FAR *out_desc;\r
+{\r
+ struct inflate_state FAR *state;\r
+ unsigned char FAR *next; /* next input */\r
+ unsigned char FAR *put; /* next output */\r
+ unsigned have, left; /* available input and output */\r
+ unsigned long hold; /* bit buffer */\r
+ unsigned bits; /* bits in bit buffer */\r
+ unsigned copy; /* number of stored or match bytes to copy */\r
+ unsigned char FAR *from; /* where to copy match bytes from */\r
+ code here; /* current decoding table entry */\r
+ code last; /* parent table entry */\r
+ unsigned len; /* length to copy for repeats, bits to drop */\r
+ int ret; /* return code */\r
+ static const unsigned short order[19] = /* permutation of code lengths */\r
+ {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};\r
+\r
+ /* Check that the strm exists and that the state was initialized */\r
+ if (strm == Z_NULL || strm->state == Z_NULL)\r
+ return Z_STREAM_ERROR;\r
+ state = (struct inflate_state FAR *)strm->state;\r
+\r
+ /* Reset the state */\r
+ strm->msg = Z_NULL;\r
+ state->mode = TYPE;\r
+ state->last = 0;\r
+ state->whave = 0;\r
+ next = strm->next_in;\r
+ have = next != Z_NULL ? strm->avail_in : 0;\r
+ hold = 0;\r
+ bits = 0;\r
+ put = state->window;\r
+ left = state->wsize;\r
+\r
+ /* Inflate until end of block marked as last */\r
+ for (;;)\r
+ switch (state->mode) {\r
+ case TYPE:\r
+ /* determine and dispatch block type */\r
+ if (state->last) {\r
+ BYTEBITS();\r
+ state->mode = DONE;\r
+ break;\r
+ }\r
+ NEEDBITS(3);\r
+ state->last = BITS(1);\r
+ DROPBITS(1);\r
+ switch (BITS(2)) {\r
+ case 0: /* stored block */\r
+ Tracev((stderr, "inflate: stored block%s\n",\r
+ state->last ? " (last)" : ""));\r
+ state->mode = STORED;\r
+ break;\r
+ case 1: /* fixed block */\r
+ fixedtables(state);\r
+ Tracev((stderr, "inflate: fixed codes block%s\n",\r
+ state->last ? " (last)" : ""));\r
+ state->mode = LEN; /* decode codes */\r
+ break;\r
+ case 2: /* dynamic block */\r
+ Tracev((stderr, "inflate: dynamic codes block%s\n",\r
+ state->last ? " (last)" : ""));\r
+ state->mode = TABLE;\r
+ break;\r
+ case 3:\r
+ strm->msg = (char *)"invalid block type";\r
+ state->mode = BAD;\r
+ }\r
+ DROPBITS(2);\r
+ break;\r
+\r
+ case STORED:\r
+ /* get and verify stored block length */\r
+ BYTEBITS(); /* go to byte boundary */\r
+ NEEDBITS(32);\r
+ if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {\r
+ strm->msg = (char *)"invalid stored block lengths";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ state->length = (unsigned)hold & 0xffff;\r
+ Tracev((stderr, "inflate: stored length %u\n",\r
+ state->length));\r
+ INITBITS();\r
+\r
+ /* copy stored block from input to output */\r
+ while (state->length != 0) {\r
+ copy = state->length;\r
+ PULL();\r
+ ROOM();\r
+ if (copy > have) copy = have;\r
+ if (copy > left) copy = left;\r
+ zmemcpy(put, next, copy);\r
+ have -= copy;\r
+ next += copy;\r
+ left -= copy;\r
+ put += copy;\r
+ state->length -= copy;\r
+ }\r
+ Tracev((stderr, "inflate: stored end\n"));\r
+ state->mode = TYPE;\r
+ break;\r
+\r
+ case TABLE:\r
+ /* get dynamic table entries descriptor */\r
+ NEEDBITS(14);\r
+ state->nlen = BITS(5) + 257;\r
+ DROPBITS(5);\r
+ state->ndist = BITS(5) + 1;\r
+ DROPBITS(5);\r
+ state->ncode = BITS(4) + 4;\r
+ DROPBITS(4);\r
+#ifndef PKZIP_BUG_WORKAROUND\r
+ if (state->nlen > 286 || state->ndist > 30) {\r
+ strm->msg = (char *)"too many length or distance symbols";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+#endif\r
+ Tracev((stderr, "inflate: table sizes ok\n"));\r
+\r
+ /* get code length code lengths (not a typo) */\r
+ state->have = 0;\r
+ while (state->have < state->ncode) {\r
+ NEEDBITS(3);\r
+ state->lens[order[state->have++]] = (unsigned short)BITS(3);\r
+ DROPBITS(3);\r
+ }\r
+ while (state->have < 19)\r
+ state->lens[order[state->have++]] = 0;\r
+ state->next = state->codes;\r
+ state->lencode = (code const FAR *)(state->next);\r
+ state->lenbits = 7;\r
+ ret = inflate_table(CODES, state->lens, 19, &(state->next),\r
+ &(state->lenbits), state->work);\r
+ if (ret) {\r
+ strm->msg = (char *)"invalid code lengths set";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ Tracev((stderr, "inflate: code lengths ok\n"));\r
+\r
+ /* get length and distance code code lengths */\r
+ state->have = 0;\r
+ while (state->have < state->nlen + state->ndist) {\r
+ for (;;) {\r
+ here = state->lencode[BITS(state->lenbits)];\r
+ if ((unsigned)(here.bits) <= bits) break;\r
+ PULLBYTE();\r
+ }\r
+ if (here.val < 16) {\r
+ NEEDBITS(here.bits);\r
+ DROPBITS(here.bits);\r
+ state->lens[state->have++] = here.val;\r
+ }\r
+ else {\r
+ if (here.val == 16) {\r
+ NEEDBITS(here.bits + 2);\r
+ DROPBITS(here.bits);\r
+ if (state->have == 0) {\r
+ strm->msg = (char *)"invalid bit length repeat";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ len = (unsigned)(state->lens[state->have - 1]);\r
+ copy = 3 + BITS(2);\r
+ DROPBITS(2);\r
+ }\r
+ else if (here.val == 17) {\r
+ NEEDBITS(here.bits + 3);\r
+ DROPBITS(here.bits);\r
+ len = 0;\r
+ copy = 3 + BITS(3);\r
+ DROPBITS(3);\r
+ }\r
+ else {\r
+ NEEDBITS(here.bits + 7);\r
+ DROPBITS(here.bits);\r
+ len = 0;\r
+ copy = 11 + BITS(7);\r
+ DROPBITS(7);\r
+ }\r
+ if (state->have + copy > state->nlen + state->ndist) {\r
+ strm->msg = (char *)"invalid bit length repeat";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ while (copy--)\r
+ state->lens[state->have++] = (unsigned short)len;\r
+ }\r
+ }\r
+\r
+ /* handle error breaks in while */\r
+ if (state->mode == BAD) break;\r
+\r
+ /* check for end-of-block code (better have one) */\r
+ if (state->lens[256] == 0) {\r
+ strm->msg = (char *)"invalid code -- missing end-of-block";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+\r
+ /* build code tables -- note: do not change the lenbits or distbits\r
+ values here (9 and 6) without reading the comments in inftrees.h\r
+ concerning the ENOUGH constants, which depend on those values */\r
+ state->next = state->codes;\r
+ state->lencode = (code const FAR *)(state->next);\r
+ state->lenbits = 9;\r
+ ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),\r
+ &(state->lenbits), state->work);\r
+ if (ret) {\r
+ strm->msg = (char *)"invalid literal/lengths set";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ state->distcode = (code const FAR *)(state->next);\r
+ state->distbits = 6;\r
+ ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,\r
+ &(state->next), &(state->distbits), state->work);\r
+ if (ret) {\r
+ strm->msg = (char *)"invalid distances set";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ Tracev((stderr, "inflate: codes ok\n"));\r
+ state->mode = LEN;\r
+\r
+ case LEN:\r
+ /* use inflate_fast() if we have enough input and output */\r
+ if (have >= 6 && left >= 258) {\r
+ RESTORE();\r
+ if (state->whave < state->wsize)\r
+ state->whave = state->wsize - left;\r
+ inflate_fast(strm, state->wsize);\r
+ LOAD();\r
+ break;\r
+ }\r
+\r
+ /* get a literal, length, or end-of-block code */\r
+ for (;;) {\r
+ here = state->lencode[BITS(state->lenbits)];\r
+ if ((unsigned)(here.bits) <= bits) break;\r
+ PULLBYTE();\r
+ }\r
+ if (here.op && (here.op & 0xf0) == 0) {\r
+ last = here;\r
+ for (;;) {\r
+ here = state->lencode[last.val +\r
+ (BITS(last.bits + last.op) >> last.bits)];\r
+ if ((unsigned)(last.bits + here.bits) <= bits) break;\r
+ PULLBYTE();\r
+ }\r
+ DROPBITS(last.bits);\r
+ }\r
+ DROPBITS(here.bits);\r
+ state->length = (unsigned)here.val;\r
+\r
+ /* process literal */\r
+ if (here.op == 0) {\r
+ Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\r
+ "inflate: literal '%c'\n" :\r
+ "inflate: literal 0x%02x\n", here.val));\r
+ ROOM();\r
+ *put++ = (unsigned char)(state->length);\r
+ left--;\r
+ state->mode = LEN;\r
+ break;\r
+ }\r
+\r
+ /* process end of block */\r
+ if (here.op & 32) {\r
+ Tracevv((stderr, "inflate: end of block\n"));\r
+ state->mode = TYPE;\r
+ break;\r
+ }\r
+\r
+ /* invalid code */\r
+ if (here.op & 64) {\r
+ strm->msg = (char *)"invalid literal/length code";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+\r
+ /* length code -- get extra bits, if any */\r
+ state->extra = (unsigned)(here.op) & 15;\r
+ if (state->extra != 0) {\r
+ NEEDBITS(state->extra);\r
+ state->length += BITS(state->extra);\r
+ DROPBITS(state->extra);\r
+ }\r
+ Tracevv((stderr, "inflate: length %u\n", state->length));\r
+\r
+ /* get distance code */\r
+ for (;;) {\r
+ here = state->distcode[BITS(state->distbits)];\r
+ if ((unsigned)(here.bits) <= bits) break;\r
+ PULLBYTE();\r
+ }\r
+ if ((here.op & 0xf0) == 0) {\r
+ last = here;\r
+ for (;;) {\r
+ here = state->distcode[last.val +\r
+ (BITS(last.bits + last.op) >> last.bits)];\r
+ if ((unsigned)(last.bits + here.bits) <= bits) break;\r
+ PULLBYTE();\r
+ }\r
+ DROPBITS(last.bits);\r
+ }\r
+ DROPBITS(here.bits);\r
+ if (here.op & 64) {\r
+ strm->msg = (char *)"invalid distance code";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ state->offset = (unsigned)here.val;\r
+\r
+ /* get distance extra bits, if any */\r
+ state->extra = (unsigned)(here.op) & 15;\r
+ if (state->extra != 0) {\r
+ NEEDBITS(state->extra);\r
+ state->offset += BITS(state->extra);\r
+ DROPBITS(state->extra);\r
+ }\r
+ if (state->offset > state->wsize - (state->whave < state->wsize ?\r
+ left : 0)) {\r
+ strm->msg = (char *)"invalid distance too far back";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ Tracevv((stderr, "inflate: distance %u\n", state->offset));\r
+\r
+ /* copy match from window to output */\r
+ do {\r
+ ROOM();\r
+ copy = state->wsize - state->offset;\r
+ if (copy < left) {\r
+ from = put + copy;\r
+ copy = left - copy;\r
+ }\r
+ else {\r
+ from = put - state->offset;\r
+ copy = left;\r
+ }\r
+ if (copy > state->length) copy = state->length;\r
+ state->length -= copy;\r
+ left -= copy;\r
+ do {\r
+ *put++ = *from++;\r
+ } while (--copy);\r
+ } while (state->length != 0);\r
+ break;\r
+\r
+ case DONE:\r
+ /* inflate stream terminated properly -- write leftover output */\r
+ ret = Z_STREAM_END;\r
+ if (left < state->wsize) {\r
+ if (out(out_desc, state->window, state->wsize - left))\r
+ ret = Z_BUF_ERROR;\r
+ }\r
+ goto inf_leave;\r
+\r
+ case BAD:\r
+ ret = Z_DATA_ERROR;\r
+ goto inf_leave;\r
+\r
+ default: /* can't happen, but makes compilers happy */\r
+ ret = Z_STREAM_ERROR;\r
+ goto inf_leave;\r
+ }\r
+\r
+ /* Return unused input */\r
+ inf_leave:\r
+ strm->next_in = next;\r
+ strm->avail_in = have;\r
+ return ret;\r
+}\r
+\r
+int ZEXPORT inflateBackEnd(strm)\r
+z_streamp strm;\r
+{\r
+ if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)\r
+ return Z_STREAM_ERROR;\r
+ ZFREE(strm, strm->state);\r
+ strm->state = Z_NULL;\r
+ Tracev((stderr, "inflate: end\n"));\r
+ return Z_OK;\r
+}\r
--- /dev/null
+/* inffast.c -- fast decoding\r
+ * Copyright (C) 1995-2008, 2010 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+#include "zutil.h"\r
+#include "inftrees.h"\r
+#include "inflate.h"\r
+#include "inffast.h"\r
+\r
+#ifndef ASMINF\r
+\r
+/* Allow machine dependent optimization for post-increment or pre-increment.\r
+ Based on testing to date,\r
+ Pre-increment preferred for:\r
+ - PowerPC G3 (Adler)\r
+ - MIPS R5000 (Randers-Pehrson)\r
+ Post-increment preferred for:\r
+ - none\r
+ No measurable difference:\r
+ - Pentium III (Anderson)\r
+ - M68060 (Nikl)\r
+ */\r
+#ifdef POSTINC\r
+# define OFF 0\r
+# define PUP(a) *(a)++\r
+#else\r
+# define OFF 1\r
+# define PUP(a) *++(a)\r
+#endif\r
+\r
+/*\r
+ Decode literal, length, and distance codes and write out the resulting\r
+ literal and match bytes until either not enough input or output is\r
+ available, an end-of-block is encountered, or a data error is encountered.\r
+ When large enough input and output buffers are supplied to inflate(), for\r
+ example, a 16K input buffer and a 64K output buffer, more than 95% of the\r
+ inflate execution time is spent in this routine.\r
+\r
+ Entry assumptions:\r
+\r
+ state->mode == LEN\r
+ strm->avail_in >= 6\r
+ strm->avail_out >= 258\r
+ start >= strm->avail_out\r
+ state->bits < 8\r
+\r
+ On return, state->mode is one of:\r
+\r
+ LEN -- ran out of enough output space or enough available input\r
+ TYPE -- reached end of block code, inflate() to interpret next block\r
+ BAD -- error in block data\r
+\r
+ Notes:\r
+\r
+ - The maximum input bits used by a length/distance pair is 15 bits for the\r
+ length code, 5 bits for the length extra, 15 bits for the distance code,\r
+ and 13 bits for the distance extra. This totals 48 bits, or six bytes.\r
+ Therefore if strm->avail_in >= 6, then there is enough input to avoid\r
+ checking for available input while decoding.\r
+\r
+ - The maximum bytes that a single length/distance pair can output is 258\r
+ bytes, which is the maximum length that can be coded. inflate_fast()\r
+ requires strm->avail_out >= 258 for each loop to avoid checking for\r
+ output space.\r
+ */\r
+void ZLIB_INTERNAL inflate_fast(strm, start)\r
+z_streamp strm;\r
+unsigned start; /* inflate()'s starting value for strm->avail_out */\r
+{\r
+ struct inflate_state FAR *state;\r
+ unsigned char FAR *in; /* local strm->next_in */\r
+ unsigned char FAR *last; /* while in < last, enough input available */\r
+ unsigned char FAR *out; /* local strm->next_out */\r
+ unsigned char FAR *beg; /* inflate()'s initial strm->next_out */\r
+ unsigned char FAR *end; /* while out < end, enough space available */\r
+#ifdef INFLATE_STRICT\r
+ unsigned dmax; /* maximum distance from zlib header */\r
+#endif\r
+ unsigned wsize; /* window size or zero if not using window */\r
+ unsigned whave; /* valid bytes in the window */\r
+ unsigned wnext; /* window write index */\r
+ unsigned char FAR *window; /* allocated sliding window, if wsize != 0 */\r
+ unsigned long hold; /* local strm->hold */\r
+ unsigned bits; /* local strm->bits */\r
+ code const FAR *lcode; /* local strm->lencode */\r
+ code const FAR *dcode; /* local strm->distcode */\r
+ unsigned lmask; /* mask for first level of length codes */\r
+ unsigned dmask; /* mask for first level of distance codes */\r
+ code here; /* retrieved table entry */\r
+ unsigned op; /* code bits, operation, extra bits, or */\r
+ /* window position, window bytes to copy */\r
+ unsigned len; /* match length, unused bytes */\r
+ unsigned dist; /* match distance */\r
+ unsigned char FAR *from; /* where to copy match from */\r
+\r
+ /* copy state to local variables */\r
+ state = (struct inflate_state FAR *)strm->state;\r
+ in = strm->next_in - OFF;\r
+ last = in + (strm->avail_in - 5);\r
+ out = strm->next_out - OFF;\r
+ beg = out - (start - strm->avail_out);\r
+ end = out + (strm->avail_out - 257);\r
+#ifdef INFLATE_STRICT\r
+ dmax = state->dmax;\r
+#endif\r
+ wsize = state->wsize;\r
+ whave = state->whave;\r
+ wnext = state->wnext;\r
+ window = state->window;\r
+ hold = state->hold;\r
+ bits = state->bits;\r
+ lcode = state->lencode;\r
+ dcode = state->distcode;\r
+ lmask = (1U << state->lenbits) - 1;\r
+ dmask = (1U << state->distbits) - 1;\r
+\r
+ /* decode literals and length/distances until end-of-block or not enough\r
+ input data or output space */\r
+ do {\r
+ if (bits < 15) {\r
+ hold += (unsigned long)(PUP(in)) << bits;\r
+ bits += 8;\r
+ hold += (unsigned long)(PUP(in)) << bits;\r
+ bits += 8;\r
+ }\r
+ here = lcode[hold & lmask];\r
+ dolen:\r
+ op = (unsigned)(here.bits);\r
+ hold >>= op;\r
+ bits -= op;\r
+ op = (unsigned)(here.op);\r
+ if (op == 0) { /* literal */\r
+ Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\r
+ "inflate: literal '%c'\n" :\r
+ "inflate: literal 0x%02x\n", here.val));\r
+ PUP(out) = (unsigned char)(here.val);\r
+ }\r
+ else if (op & 16) { /* length base */\r
+ len = (unsigned)(here.val);\r
+ op &= 15; /* number of extra bits */\r
+ if (op) {\r
+ if (bits < op) {\r
+ hold += (unsigned long)(PUP(in)) << bits;\r
+ bits += 8;\r
+ }\r
+ len += (unsigned)hold & ((1U << op) - 1);\r
+ hold >>= op;\r
+ bits -= op;\r
+ }\r
+ Tracevv((stderr, "inflate: length %u\n", len));\r
+ if (bits < 15) {\r
+ hold += (unsigned long)(PUP(in)) << bits;\r
+ bits += 8;\r
+ hold += (unsigned long)(PUP(in)) << bits;\r
+ bits += 8;\r
+ }\r
+ here = dcode[hold & dmask];\r
+ dodist:\r
+ op = (unsigned)(here.bits);\r
+ hold >>= op;\r
+ bits -= op;\r
+ op = (unsigned)(here.op);\r
+ if (op & 16) { /* distance base */\r
+ dist = (unsigned)(here.val);\r
+ op &= 15; /* number of extra bits */\r
+ if (bits < op) {\r
+ hold += (unsigned long)(PUP(in)) << bits;\r
+ bits += 8;\r
+ if (bits < op) {\r
+ hold += (unsigned long)(PUP(in)) << bits;\r
+ bits += 8;\r
+ }\r
+ }\r
+ dist += (unsigned)hold & ((1U << op) - 1);\r
+#ifdef INFLATE_STRICT\r
+ if (dist > dmax) {\r
+ strm->msg = (char *)"invalid distance too far back";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+#endif\r
+ hold >>= op;\r
+ bits -= op;\r
+ Tracevv((stderr, "inflate: distance %u\n", dist));\r
+ op = (unsigned)(out - beg); /* max distance in output */\r
+ if (dist > op) { /* see if copy from window */\r
+ op = dist - op; /* distance back in window */\r
+ if (op > whave) {\r
+ if (state->sane) {\r
+ strm->msg =\r
+ (char *)"invalid distance too far back";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR\r
+ if (len <= op - whave) {\r
+ do {\r
+ PUP(out) = 0;\r
+ } while (--len);\r
+ continue;\r
+ }\r
+ len -= op - whave;\r
+ do {\r
+ PUP(out) = 0;\r
+ } while (--op > whave);\r
+ if (op == 0) {\r
+ from = out - dist;\r
+ do {\r
+ PUP(out) = PUP(from);\r
+ } while (--len);\r
+ continue;\r
+ }\r
+#endif\r
+ }\r
+ from = window - OFF;\r
+ if (wnext == 0) { /* very common case */\r
+ from += wsize - op;\r
+ if (op < len) { /* some from window */\r
+ len -= op;\r
+ do {\r
+ PUP(out) = PUP(from);\r
+ } while (--op);\r
+ from = out - dist; /* rest from output */\r
+ }\r
+ }\r
+ else if (wnext < op) { /* wrap around window */\r
+ from += wsize + wnext - op;\r
+ op -= wnext;\r
+ if (op < len) { /* some from end of window */\r
+ len -= op;\r
+ do {\r
+ PUP(out) = PUP(from);\r
+ } while (--op);\r
+ from = window - OFF;\r
+ if (wnext < len) { /* some from start of window */\r
+ op = wnext;\r
+ len -= op;\r
+ do {\r
+ PUP(out) = PUP(from);\r
+ } while (--op);\r
+ from = out - dist; /* rest from output */\r
+ }\r
+ }\r
+ }\r
+ else { /* contiguous in window */\r
+ from += wnext - op;\r
+ if (op < len) { /* some from window */\r
+ len -= op;\r
+ do {\r
+ PUP(out) = PUP(from);\r
+ } while (--op);\r
+ from = out - dist; /* rest from output */\r
+ }\r
+ }\r
+ while (len > 2) {\r
+ PUP(out) = PUP(from);\r
+ PUP(out) = PUP(from);\r
+ PUP(out) = PUP(from);\r
+ len -= 3;\r
+ }\r
+ if (len) {\r
+ PUP(out) = PUP(from);\r
+ if (len > 1)\r
+ PUP(out) = PUP(from);\r
+ }\r
+ }\r
+ else {\r
+ from = out - dist; /* copy direct from output */\r
+ do { /* minimum length is three */\r
+ PUP(out) = PUP(from);\r
+ PUP(out) = PUP(from);\r
+ PUP(out) = PUP(from);\r
+ len -= 3;\r
+ } while (len > 2);\r
+ if (len) {\r
+ PUP(out) = PUP(from);\r
+ if (len > 1)\r
+ PUP(out) = PUP(from);\r
+ }\r
+ }\r
+ }\r
+ else if ((op & 64) == 0) { /* 2nd level distance code */\r
+ here = dcode[here.val + (hold & ((1U << op) - 1))];\r
+ goto dodist;\r
+ }\r
+ else {\r
+ strm->msg = (char *)"invalid distance code";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ }\r
+ else if ((op & 64) == 0) { /* 2nd level length code */\r
+ here = lcode[here.val + (hold & ((1U << op) - 1))];\r
+ goto dolen;\r
+ }\r
+ else if (op & 32) { /* end-of-block */\r
+ Tracevv((stderr, "inflate: end of block\n"));\r
+ state->mode = TYPE;\r
+ break;\r
+ }\r
+ else {\r
+ strm->msg = (char *)"invalid literal/length code";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ } while (in < last && out < end);\r
+\r
+ /* return unused bytes (on entry, bits < 8, so in won't go too far back) */\r
+ len = bits >> 3;\r
+ in -= len;\r
+ bits -= len << 3;\r
+ hold &= (1U << bits) - 1;\r
+\r
+ /* update state and return */\r
+ strm->next_in = in + OFF;\r
+ strm->next_out = out + OFF;\r
+ strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last));\r
+ strm->avail_out = (unsigned)(out < end ?\r
+ 257 + (end - out) : 257 - (out - end));\r
+ state->hold = hold;\r
+ state->bits = bits;\r
+ return;\r
+}\r
+\r
+/*\r
+ inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):\r
+ - Using bit fields for code structure\r
+ - Different op definition to avoid & for extra bits (do & for table bits)\r
+ - Three separate decoding do-loops for direct, window, and wnext == 0\r
+ - Special case for distance > 1 copies to do overlapped load and store copy\r
+ - Explicit branch predictions (based on measured branch probabilities)\r
+ - Deferring match copy and interspersed it with decoding subsequent codes\r
+ - Swapping literal/length else\r
+ - Swapping window/direct else\r
+ - Larger unrolled copy loops (three is about right)\r
+ - Moving len -= 3 statement into middle of loop\r
+ */\r
+\r
+#endif /* !ASMINF */\r
--- /dev/null
+/* inffast.h -- header to use inffast.c\r
+ * Copyright (C) 1995-2003, 2010 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/* WARNING: this file should *not* be used by applications. It is\r
+ part of the implementation of the compression library and is\r
+ subject to change. Applications should only use zlib.h.\r
+ */\r
+\r
+void ZLIB_INTERNAL inflate_fast OF((z_streamp strm, unsigned start));\r
--- /dev/null
+ /* inffixed.h -- table for decoding fixed codes\r
+ * Generated automatically by makefixed().\r
+ */\r
+\r
+ /* WARNING: this file should *not* be used by applications. It\r
+ is part of the implementation of the compression library and\r
+ is subject to change. Applications should only use zlib.h.\r
+ */\r
+\r
+ static const code lenfix[512] = {\r
+ {96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48},\r
+ {0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128},\r
+ {0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59},\r
+ {0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176},\r
+ {0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20},\r
+ {21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100},\r
+ {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8},\r
+ {0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216},\r
+ {18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76},\r
+ {0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114},\r
+ {0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},\r
+ {0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148},\r
+ {20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42},\r
+ {0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86},\r
+ {0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15},\r
+ {0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236},\r
+ {16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62},\r
+ {0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},\r
+ {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31},\r
+ {0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162},\r
+ {0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25},\r
+ {0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105},\r
+ {0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4},\r
+ {0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202},\r
+ {17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69},\r
+ {0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125},\r
+ {0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13},\r
+ {0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195},\r
+ {19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35},\r
+ {0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91},\r
+ {0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19},\r
+ {0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246},\r
+ {16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55},\r
+ {0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135},\r
+ {0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99},\r
+ {0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190},\r
+ {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16},\r
+ {20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96},\r
+ {0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6},\r
+ {0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209},\r
+ {17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},\r
+ {0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116},\r
+ {0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4},\r
+ {0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153},\r
+ {20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44},\r
+ {0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82},\r
+ {0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11},\r
+ {0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},\r
+ {16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58},\r
+ {0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138},\r
+ {0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51},\r
+ {0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173},\r
+ {0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30},\r
+ {0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110},\r
+ {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0},\r
+ {0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195},\r
+ {16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65},\r
+ {0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121},\r
+ {0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},\r
+ {0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258},\r
+ {19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37},\r
+ {0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93},\r
+ {0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23},\r
+ {0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251},\r
+ {16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51},\r
+ {0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},\r
+ {0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67},\r
+ {0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183},\r
+ {0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23},\r
+ {64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103},\r
+ {0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9},\r
+ {0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223},\r
+ {18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79},\r
+ {0,9,255}\r
+ };\r
+\r
+ static const code distfix[32] = {\r
+ {16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025},\r
+ {21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193},\r
+ {18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385},\r
+ {19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577},\r
+ {16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073},\r
+ {22,5,193},{64,5,0}\r
+ };\r
--- /dev/null
+/* inflate.c -- zlib decompression\r
+ * Copyright (C) 1995-2010 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/*\r
+ * Change history:\r
+ *\r
+ * 1.2.beta0 24 Nov 2002\r
+ * - First version -- complete rewrite of inflate to simplify code, avoid\r
+ * creation of window when not needed, minimize use of window when it is\r
+ * needed, make inffast.c even faster, implement gzip decoding, and to\r
+ * improve code readability and style over the previous zlib inflate code\r
+ *\r
+ * 1.2.beta1 25 Nov 2002\r
+ * - Use pointers for available input and output checking in inffast.c\r
+ * - Remove input and output counters in inffast.c\r
+ * - Change inffast.c entry and loop from avail_in >= 7 to >= 6\r
+ * - Remove unnecessary second byte pull from length extra in inffast.c\r
+ * - Unroll direct copy to three copies per loop in inffast.c\r
+ *\r
+ * 1.2.beta2 4 Dec 2002\r
+ * - Change external routine names to reduce potential conflicts\r
+ * - Correct filename to inffixed.h for fixed tables in inflate.c\r
+ * - Make hbuf[] unsigned char to match parameter type in inflate.c\r
+ * - Change strm->next_out[-state->offset] to *(strm->next_out - state->offset)\r
+ * to avoid negation problem on Alphas (64 bit) in inflate.c\r
+ *\r
+ * 1.2.beta3 22 Dec 2002\r
+ * - Add comments on state->bits assertion in inffast.c\r
+ * - Add comments on op field in inftrees.h\r
+ * - Fix bug in reuse of allocated window after inflateReset()\r
+ * - Remove bit fields--back to byte structure for speed\r
+ * - Remove distance extra == 0 check in inflate_fast()--only helps for lengths\r
+ * - Change post-increments to pre-increments in inflate_fast(), PPC biased?\r
+ * - Add compile time option, POSTINC, to use post-increments instead (Intel?)\r
+ * - Make MATCH copy in inflate() much faster for when inflate_fast() not used\r
+ * - Use local copies of stream next and avail values, as well as local bit\r
+ * buffer and bit count in inflate()--for speed when inflate_fast() not used\r
+ *\r
+ * 1.2.beta4 1 Jan 2003\r
+ * - Split ptr - 257 statements in inflate_table() to avoid compiler warnings\r
+ * - Move a comment on output buffer sizes from inffast.c to inflate.c\r
+ * - Add comments in inffast.c to introduce the inflate_fast() routine\r
+ * - Rearrange window copies in inflate_fast() for speed and simplification\r
+ * - Unroll last copy for window match in inflate_fast()\r
+ * - Use local copies of window variables in inflate_fast() for speed\r
+ * - Pull out common wnext == 0 case for speed in inflate_fast()\r
+ * - Make op and len in inflate_fast() unsigned for consistency\r
+ * - Add FAR to lcode and dcode declarations in inflate_fast()\r
+ * - Simplified bad distance check in inflate_fast()\r
+ * - Added inflateBackInit(), inflateBack(), and inflateBackEnd() in new\r
+ * source file infback.c to provide a call-back interface to inflate for\r
+ * programs like gzip and unzip -- uses window as output buffer to avoid\r
+ * window copying\r
+ *\r
+ * 1.2.beta5 1 Jan 2003\r
+ * - Improved inflateBack() interface to allow the caller to provide initial\r
+ * input in strm.\r
+ * - Fixed stored blocks bug in inflateBack()\r
+ *\r
+ * 1.2.beta6 4 Jan 2003\r
+ * - Added comments in inffast.c on effectiveness of POSTINC\r
+ * - Typecasting all around to reduce compiler warnings\r
+ * - Changed loops from while (1) or do {} while (1) to for (;;), again to\r
+ * make compilers happy\r
+ * - Changed type of window in inflateBackInit() to unsigned char *\r
+ *\r
+ * 1.2.beta7 27 Jan 2003\r
+ * - Changed many types to unsigned or unsigned short to avoid warnings\r
+ * - Added inflateCopy() function\r
+ *\r
+ * 1.2.0 9 Mar 2003\r
+ * - Changed inflateBack() interface to provide separate opaque descriptors\r
+ * for the in() and out() functions\r
+ * - Changed inflateBack() argument and in_func typedef to swap the length\r
+ * and buffer address return values for the input function\r
+ * - Check next_in and next_out for Z_NULL on entry to inflate()\r
+ *\r
+ * The history for versions after 1.2.0 are in ChangeLog in zlib distribution.\r
+ */\r
+\r
+#include "zutil.h"\r
+#include "inftrees.h"\r
+#include "inflate.h"\r
+#include "inffast.h"\r
+\r
+#ifdef MAKEFIXED\r
+# ifndef BUILDFIXED\r
+# define BUILDFIXED\r
+# endif\r
+#endif\r
+\r
+/* function prototypes */\r
+local void fixedtables OF((struct inflate_state FAR *state));\r
+local int updatewindow OF((z_streamp strm, unsigned out));\r
+#ifdef BUILDFIXED\r
+ void makefixed OF((void));\r
+#endif\r
+local unsigned syncsearch OF((unsigned FAR *have, unsigned char FAR *buf,\r
+ unsigned len));\r
+\r
+int ZEXPORT inflateReset(strm)\r
+z_streamp strm;\r
+{\r
+ struct inflate_state FAR *state;\r
+\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+ state = (struct inflate_state FAR *)strm->state;\r
+ strm->total_in = strm->total_out = state->total = 0;\r
+ strm->msg = Z_NULL;\r
+ strm->adler = 1; /* to support ill-conceived Java test suite */\r
+ state->mode = HEAD;\r
+ state->last = 0;\r
+ state->havedict = 0;\r
+ state->dmax = 32768U;\r
+ state->head = Z_NULL;\r
+ state->wsize = 0;\r
+ state->whave = 0;\r
+ state->wnext = 0;\r
+ state->hold = 0;\r
+ state->bits = 0;\r
+ state->lencode = state->distcode = state->next = state->codes;\r
+ state->sane = 1;\r
+ state->back = -1;\r
+ Tracev((stderr, "inflate: reset\n"));\r
+ return Z_OK;\r
+}\r
+\r
+int ZEXPORT inflateReset2(strm, windowBits)\r
+z_streamp strm;\r
+int windowBits;\r
+{\r
+ int wrap;\r
+ struct inflate_state FAR *state;\r
+\r
+ /* get the state */\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+ state = (struct inflate_state FAR *)strm->state;\r
+\r
+ /* extract wrap request from windowBits parameter */\r
+ if (windowBits < 0) {\r
+ wrap = 0;\r
+ windowBits = -windowBits;\r
+ }\r
+ else {\r
+ wrap = (windowBits >> 4) + 1;\r
+#ifdef GUNZIP\r
+ if (windowBits < 48)\r
+ windowBits &= 15;\r
+#endif\r
+ }\r
+\r
+ /* set number of window bits, free window if different */\r
+ if (windowBits && (windowBits < 8 || windowBits > 15))\r
+ return Z_STREAM_ERROR;\r
+ if (state->window != Z_NULL && state->wbits != (unsigned)windowBits) {\r
+ ZFREE(strm, state->window);\r
+ state->window = Z_NULL;\r
+ }\r
+\r
+ /* update state and reset the rest of it */\r
+ state->wrap = wrap;\r
+ state->wbits = (unsigned)windowBits;\r
+ return inflateReset(strm);\r
+}\r
+\r
+int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size)\r
+z_streamp strm;\r
+int windowBits;\r
+const char *version;\r
+int stream_size;\r
+{\r
+ int ret;\r
+ struct inflate_state FAR *state;\r
+\r
+ if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||\r
+ stream_size != (int)(sizeof(z_stream)))\r
+ return Z_VERSION_ERROR;\r
+ if (strm == Z_NULL) return Z_STREAM_ERROR;\r
+ strm->msg = Z_NULL; /* in case we return an error */\r
+ if (strm->zalloc == (alloc_func)0) {\r
+ strm->zalloc = zcalloc;\r
+ strm->opaque = (voidpf)0;\r
+ }\r
+ if (strm->zfree == (free_func)0) strm->zfree = zcfree;\r
+ state = (struct inflate_state FAR *)\r
+ ZALLOC(strm, 1, sizeof(struct inflate_state));\r
+ if (state == Z_NULL) return Z_MEM_ERROR;\r
+ Tracev((stderr, "inflate: allocated\n"));\r
+ strm->state = (struct internal_state FAR *)state;\r
+ state->window = Z_NULL;\r
+ ret = inflateReset2(strm, windowBits);\r
+ if (ret != Z_OK) {\r
+ ZFREE(strm, state);\r
+ strm->state = Z_NULL;\r
+ }\r
+ return ret;\r
+}\r
+\r
+int ZEXPORT inflateInit_(strm, version, stream_size)\r
+z_streamp strm;\r
+const char *version;\r
+int stream_size;\r
+{\r
+ return inflateInit2_(strm, DEF_WBITS, version, stream_size);\r
+}\r
+\r
+int ZEXPORT inflatePrime(strm, bits, value)\r
+z_streamp strm;\r
+int bits;\r
+int value;\r
+{\r
+ struct inflate_state FAR *state;\r
+\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+ state = (struct inflate_state FAR *)strm->state;\r
+ if (bits < 0) {\r
+ state->hold = 0;\r
+ state->bits = 0;\r
+ return Z_OK;\r
+ }\r
+ if (bits > 16 || state->bits + bits > 32) return Z_STREAM_ERROR;\r
+ value &= (1L << bits) - 1;\r
+ state->hold += value << state->bits;\r
+ state->bits += bits;\r
+ return Z_OK;\r
+}\r
+\r
+/*\r
+ Return state with length and distance decoding tables and index sizes set to\r
+ fixed code decoding. Normally this returns fixed tables from inffixed.h.\r
+ If BUILDFIXED is defined, then instead this routine builds the tables the\r
+ first time it's called, and returns those tables the first time and\r
+ thereafter. This reduces the size of the code by about 2K bytes, in\r
+ exchange for a little execution time. However, BUILDFIXED should not be\r
+ used for threaded applications, since the rewriting of the tables and virgin\r
+ may not be thread-safe.\r
+ */\r
+local void fixedtables(state)\r
+struct inflate_state FAR *state;\r
+{\r
+#ifdef BUILDFIXED\r
+ static int virgin = 1;\r
+ static code *lenfix, *distfix;\r
+ static code fixed[544];\r
+\r
+ /* build fixed huffman tables if first call (may not be thread safe) */\r
+ if (virgin) {\r
+ unsigned sym, bits;\r
+ static code *next;\r
+\r
+ /* literal/length table */\r
+ sym = 0;\r
+ while (sym < 144) state->lens[sym++] = 8;\r
+ while (sym < 256) state->lens[sym++] = 9;\r
+ while (sym < 280) state->lens[sym++] = 7;\r
+ while (sym < 288) state->lens[sym++] = 8;\r
+ next = fixed;\r
+ lenfix = next;\r
+ bits = 9;\r
+ inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);\r
+\r
+ /* distance table */\r
+ sym = 0;\r
+ while (sym < 32) state->lens[sym++] = 5;\r
+ distfix = next;\r
+ bits = 5;\r
+ inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);\r
+\r
+ /* do this just once */\r
+ virgin = 0;\r
+ }\r
+#else /* !BUILDFIXED */\r
+# include "inffixed.h"\r
+#endif /* BUILDFIXED */\r
+ state->lencode = lenfix;\r
+ state->lenbits = 9;\r
+ state->distcode = distfix;\r
+ state->distbits = 5;\r
+}\r
+\r
+#ifdef MAKEFIXED\r
+#include <stdio.h>\r
+\r
+/*\r
+ Write out the inffixed.h that is #include'd above. Defining MAKEFIXED also\r
+ defines BUILDFIXED, so the tables are built on the fly. makefixed() writes\r
+ those tables to stdout, which would be piped to inffixed.h. A small program\r
+ can simply call makefixed to do this:\r
+\r
+ void makefixed(void);\r
+\r
+ int main(void)\r
+ {\r
+ makefixed();\r
+ return 0;\r
+ }\r
+\r
+ Then that can be linked with zlib built with MAKEFIXED defined and run:\r
+\r
+ a.out > inffixed.h\r
+ */\r
+void makefixed()\r
+{\r
+ unsigned low, size;\r
+ struct inflate_state state;\r
+\r
+ fixedtables(&state);\r
+ puts(" /* inffixed.h -- table for decoding fixed codes");\r
+ puts(" * Generated automatically by makefixed().");\r
+ puts(" */");\r
+ puts("");\r
+ puts(" /* WARNING: this file should *not* be used by applications.");\r
+ puts(" It is part of the implementation of this library and is");\r
+ puts(" subject to change. Applications should only use zlib.h.");\r
+ puts(" */");\r
+ puts("");\r
+ size = 1U << 9;\r
+ printf(" static const code lenfix[%u] = {", size);\r
+ low = 0;\r
+ for (;;) {\r
+ if ((low % 7) == 0) printf("\n ");\r
+ printf("{%u,%u,%d}", state.lencode[low].op, state.lencode[low].bits,\r
+ state.lencode[low].val);\r
+ if (++low == size) break;\r
+ putchar(',');\r
+ }\r
+ puts("\n };");\r
+ size = 1U << 5;\r
+ printf("\n static const code distfix[%u] = {", size);\r
+ low = 0;\r
+ for (;;) {\r
+ if ((low % 6) == 0) printf("\n ");\r
+ printf("{%u,%u,%d}", state.distcode[low].op, state.distcode[low].bits,\r
+ state.distcode[low].val);\r
+ if (++low == size) break;\r
+ putchar(',');\r
+ }\r
+ puts("\n };");\r
+}\r
+#endif /* MAKEFIXED */\r
+\r
+/*\r
+ Update the window with the last wsize (normally 32K) bytes written before\r
+ returning. If window does not exist yet, create it. This is only called\r
+ when a window is already in use, or when output has been written during this\r
+ inflate call, but the end of the deflate stream has not been reached yet.\r
+ It is also called to create a window for dictionary data when a dictionary\r
+ is loaded.\r
+\r
+ Providing output buffers larger than 32K to inflate() should provide a speed\r
+ advantage, since only the last 32K of output is copied to the sliding window\r
+ upon return from inflate(), and since all distances after the first 32K of\r
+ output will fall in the output data, making match copies simpler and faster.\r
+ The advantage may be dependent on the size of the processor's data caches.\r
+ */\r
+local int updatewindow(strm, out)\r
+z_streamp strm;\r
+unsigned out;\r
+{\r
+ struct inflate_state FAR *state;\r
+ unsigned copy, dist;\r
+\r
+ state = (struct inflate_state FAR *)strm->state;\r
+\r
+ /* if it hasn't been done already, allocate space for the window */\r
+ if (state->window == Z_NULL) {\r
+ state->window = (unsigned char FAR *)\r
+ ZALLOC(strm, 1U << state->wbits,\r
+ sizeof(unsigned char));\r
+ if (state->window == Z_NULL) return 1;\r
+ }\r
+\r
+ /* if window not in use yet, initialize */\r
+ if (state->wsize == 0) {\r
+ state->wsize = 1U << state->wbits;\r
+ state->wnext = 0;\r
+ state->whave = 0;\r
+ }\r
+\r
+ /* copy state->wsize or less output bytes into the circular window */\r
+ copy = out - strm->avail_out;\r
+ if (copy >= state->wsize) {\r
+ zmemcpy(state->window, strm->next_out - state->wsize, state->wsize);\r
+ state->wnext = 0;\r
+ state->whave = state->wsize;\r
+ }\r
+ else {\r
+ dist = state->wsize - state->wnext;\r
+ if (dist > copy) dist = copy;\r
+ zmemcpy(state->window + state->wnext, strm->next_out - copy, dist);\r
+ copy -= dist;\r
+ if (copy) {\r
+ zmemcpy(state->window, strm->next_out - copy, copy);\r
+ state->wnext = copy;\r
+ state->whave = state->wsize;\r
+ }\r
+ else {\r
+ state->wnext += dist;\r
+ if (state->wnext == state->wsize) state->wnext = 0;\r
+ if (state->whave < state->wsize) state->whave += dist;\r
+ }\r
+ }\r
+ return 0;\r
+}\r
+\r
+/* Macros for inflate(): */\r
+\r
+/* check function to use adler32() for zlib or crc32() for gzip */\r
+#ifdef GUNZIP\r
+# define UPDATE(check, buf, len) \\r
+ (state->flags ? crc32(check, buf, len) : adler32(check, buf, len))\r
+#else\r
+# define UPDATE(check, buf, len) adler32(check, buf, len)\r
+#endif\r
+\r
+/* check macros for header crc */\r
+#ifdef GUNZIP\r
+# define CRC2(check, word) \\r
+ do { \\r
+ hbuf[0] = (unsigned char)(word); \\r
+ hbuf[1] = (unsigned char)((word) >> 8); \\r
+ check = crc32(check, hbuf, 2); \\r
+ } while (0)\r
+\r
+# define CRC4(check, word) \\r
+ do { \\r
+ hbuf[0] = (unsigned char)(word); \\r
+ hbuf[1] = (unsigned char)((word) >> 8); \\r
+ hbuf[2] = (unsigned char)((word) >> 16); \\r
+ hbuf[3] = (unsigned char)((word) >> 24); \\r
+ check = crc32(check, hbuf, 4); \\r
+ } while (0)\r
+#endif\r
+\r
+/* Load registers with state in inflate() for speed */\r
+#define LOAD() \\r
+ do { \\r
+ put = strm->next_out; \\r
+ left = strm->avail_out; \\r
+ next = strm->next_in; \\r
+ have = strm->avail_in; \\r
+ hold = state->hold; \\r
+ bits = state->bits; \\r
+ } while (0)\r
+\r
+/* Restore state from registers in inflate() */\r
+#define RESTORE() \\r
+ do { \\r
+ strm->next_out = put; \\r
+ strm->avail_out = left; \\r
+ strm->next_in = next; \\r
+ strm->avail_in = have; \\r
+ state->hold = hold; \\r
+ state->bits = bits; \\r
+ } while (0)\r
+\r
+/* Clear the input bit accumulator */\r
+#define INITBITS() \\r
+ do { \\r
+ hold = 0; \\r
+ bits = 0; \\r
+ } while (0)\r
+\r
+/* Get a byte of input into the bit accumulator, or return from inflate()\r
+ if there is no input available. */\r
+#define PULLBYTE() \\r
+ do { \\r
+ if (have == 0) goto inf_leave; \\r
+ have--; \\r
+ hold += (unsigned long)(*next++) << bits; \\r
+ bits += 8; \\r
+ } while (0)\r
+\r
+/* Assure that there are at least n bits in the bit accumulator. If there is\r
+ not enough available input to do that, then return from inflate(). */\r
+#define NEEDBITS(n) \\r
+ do { \\r
+ while (bits < (unsigned)(n)) \\r
+ PULLBYTE(); \\r
+ } while (0)\r
+\r
+/* Return the low n bits of the bit accumulator (n < 16) */\r
+#define BITS(n) \\r
+ ((unsigned)hold & ((1U << (n)) - 1))\r
+\r
+/* Remove n bits from the bit accumulator */\r
+#define DROPBITS(n) \\r
+ do { \\r
+ hold >>= (n); \\r
+ bits -= (unsigned)(n); \\r
+ } while (0)\r
+\r
+/* Remove zero to seven bits as needed to go to a byte boundary */\r
+#define BYTEBITS() \\r
+ do { \\r
+ hold >>= bits & 7; \\r
+ bits -= bits & 7; \\r
+ } while (0)\r
+\r
+/* Reverse the bytes in a 32-bit value */\r
+#define REVERSE(q) \\r
+ ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \\r
+ (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))\r
+\r
+/*\r
+ inflate() uses a state machine to process as much input data and generate as\r
+ much output data as possible before returning. The state machine is\r
+ structured roughly as follows:\r
+\r
+ for (;;) switch (state) {\r
+ ...\r
+ case STATEn:\r
+ if (not enough input data or output space to make progress)\r
+ return;\r
+ ... make progress ...\r
+ state = STATEm;\r
+ break;\r
+ ...\r
+ }\r
+\r
+ so when inflate() is called again, the same case is attempted again, and\r
+ if the appropriate resources are provided, the machine proceeds to the\r
+ next state. The NEEDBITS() macro is usually the way the state evaluates\r
+ whether it can proceed or should return. NEEDBITS() does the return if\r
+ the requested bits are not available. The typical use of the BITS macros\r
+ is:\r
+\r
+ NEEDBITS(n);\r
+ ... do something with BITS(n) ...\r
+ DROPBITS(n);\r
+\r
+ where NEEDBITS(n) either returns from inflate() if there isn't enough\r
+ input left to load n bits into the accumulator, or it continues. BITS(n)\r
+ gives the low n bits in the accumulator. When done, DROPBITS(n) drops\r
+ the low n bits off the accumulator. INITBITS() clears the accumulator\r
+ and sets the number of available bits to zero. BYTEBITS() discards just\r
+ enough bits to put the accumulator on a byte boundary. After BYTEBITS()\r
+ and a NEEDBITS(8), then BITS(8) would return the next byte in the stream.\r
+\r
+ NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return\r
+ if there is no input available. The decoding of variable length codes uses\r
+ PULLBYTE() directly in order to pull just enough bytes to decode the next\r
+ code, and no more.\r
+\r
+ Some states loop until they get enough input, making sure that enough\r
+ state information is maintained to continue the loop where it left off\r
+ if NEEDBITS() returns in the loop. For example, want, need, and keep\r
+ would all have to actually be part of the saved state in case NEEDBITS()\r
+ returns:\r
+\r
+ case STATEw:\r
+ while (want < need) {\r
+ NEEDBITS(n);\r
+ keep[want++] = BITS(n);\r
+ DROPBITS(n);\r
+ }\r
+ state = STATEx;\r
+ case STATEx:\r
+\r
+ As shown above, if the next state is also the next case, then the break\r
+ is omitted.\r
+\r
+ A state may also return if there is not enough output space available to\r
+ complete that state. Those states are copying stored data, writing a\r
+ literal byte, and copying a matching string.\r
+\r
+ When returning, a "goto inf_leave" is used to update the total counters,\r
+ update the check value, and determine whether any progress has been made\r
+ during that inflate() call in order to return the proper return code.\r
+ Progress is defined as a change in either strm->avail_in or strm->avail_out.\r
+ When there is a window, goto inf_leave will update the window with the last\r
+ output written. If a goto inf_leave occurs in the middle of decompression\r
+ and there is no window currently, goto inf_leave will create one and copy\r
+ output to the window for the next call of inflate().\r
+\r
+ In this implementation, the flush parameter of inflate() only affects the\r
+ return code (per zlib.h). inflate() always writes as much as possible to\r
+ strm->next_out, given the space available and the provided input--the effect\r
+ documented in zlib.h of Z_SYNC_FLUSH. Furthermore, inflate() always defers\r
+ the allocation of and copying into a sliding window until necessary, which\r
+ provides the effect documented in zlib.h for Z_FINISH when the entire input\r
+ stream available. So the only thing the flush parameter actually does is:\r
+ when flush is set to Z_FINISH, inflate() cannot return Z_OK. Instead it\r
+ will return Z_BUF_ERROR if it has not reached the end of the stream.\r
+ */\r
+\r
+int ZEXPORT inflate(strm, flush)\r
+z_streamp strm;\r
+int flush;\r
+{\r
+ struct inflate_state FAR *state;\r
+ unsigned char FAR *next; /* next input */\r
+ unsigned char FAR *put; /* next output */\r
+ unsigned have, left; /* available input and output */\r
+ unsigned long hold; /* bit buffer */\r
+ unsigned bits; /* bits in bit buffer */\r
+ unsigned in, out; /* save starting available input and output */\r
+ unsigned copy; /* number of stored or match bytes to copy */\r
+ unsigned char FAR *from; /* where to copy match bytes from */\r
+ code here; /* current decoding table entry */\r
+ code last; /* parent table entry */\r
+ unsigned len; /* length to copy for repeats, bits to drop */\r
+ int ret; /* return code */\r
+#ifdef GUNZIP\r
+ unsigned char hbuf[4]; /* buffer for gzip header crc calculation */\r
+#endif\r
+ static const unsigned short order[19] = /* permutation of code lengths */\r
+ {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};\r
+\r
+ if (strm == Z_NULL || strm->state == Z_NULL || strm->next_out == Z_NULL ||\r
+ (strm->next_in == Z_NULL && strm->avail_in != 0))\r
+ return Z_STREAM_ERROR;\r
+\r
+ state = (struct inflate_state FAR *)strm->state;\r
+ if (state->mode == TYPE) state->mode = TYPEDO; /* skip check */\r
+ LOAD();\r
+ in = have;\r
+ out = left;\r
+ ret = Z_OK;\r
+ for (;;)\r
+ switch (state->mode) {\r
+ case HEAD:\r
+ if (state->wrap == 0) {\r
+ state->mode = TYPEDO;\r
+ break;\r
+ }\r
+ NEEDBITS(16);\r
+#ifdef GUNZIP\r
+ if ((state->wrap & 2) && hold == 0x8b1f) { /* gzip header */\r
+ state->check = crc32(0L, Z_NULL, 0);\r
+ CRC2(state->check, hold);\r
+ INITBITS();\r
+ state->mode = FLAGS;\r
+ break;\r
+ }\r
+ state->flags = 0; /* expect zlib header */\r
+ if (state->head != Z_NULL)\r
+ state->head->done = -1;\r
+ if (!(state->wrap & 1) || /* check if zlib header allowed */\r
+#else\r
+ if (\r
+#endif\r
+ ((BITS(8) << 8) + (hold >> 8)) % 31) {\r
+ strm->msg = (char *)"incorrect header check";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ if (BITS(4) != Z_DEFLATED) {\r
+ strm->msg = (char *)"unknown compression method";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ DROPBITS(4);\r
+ len = BITS(4) + 8;\r
+ if (state->wbits == 0)\r
+ state->wbits = len;\r
+ else if (len > state->wbits) {\r
+ strm->msg = (char *)"invalid window size";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ state->dmax = 1U << len;\r
+ Tracev((stderr, "inflate: zlib header ok\n"));\r
+ strm->adler = state->check = adler32(0L, Z_NULL, 0);\r
+ state->mode = hold & 0x200 ? DICTID : TYPE;\r
+ INITBITS();\r
+ break;\r
+#ifdef GUNZIP\r
+ case FLAGS:\r
+ NEEDBITS(16);\r
+ state->flags = (int)(hold);\r
+ if ((state->flags & 0xff) != Z_DEFLATED) {\r
+ strm->msg = (char *)"unknown compression method";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ if (state->flags & 0xe000) {\r
+ strm->msg = (char *)"unknown header flags set";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ if (state->head != Z_NULL)\r
+ state->head->text = (int)((hold >> 8) & 1);\r
+ if (state->flags & 0x0200) CRC2(state->check, hold);\r
+ INITBITS();\r
+ state->mode = TIME;\r
+ case TIME:\r
+ NEEDBITS(32);\r
+ if (state->head != Z_NULL)\r
+ state->head->time = hold;\r
+ if (state->flags & 0x0200) CRC4(state->check, hold);\r
+ INITBITS();\r
+ state->mode = OS;\r
+ case OS:\r
+ NEEDBITS(16);\r
+ if (state->head != Z_NULL) {\r
+ state->head->xflags = (int)(hold & 0xff);\r
+ state->head->os = (int)(hold >> 8);\r
+ }\r
+ if (state->flags & 0x0200) CRC2(state->check, hold);\r
+ INITBITS();\r
+ state->mode = EXLEN;\r
+ case EXLEN:\r
+ if (state->flags & 0x0400) {\r
+ NEEDBITS(16);\r
+ state->length = (unsigned)(hold);\r
+ if (state->head != Z_NULL)\r
+ state->head->extra_len = (unsigned)hold;\r
+ if (state->flags & 0x0200) CRC2(state->check, hold);\r
+ INITBITS();\r
+ }\r
+ else if (state->head != Z_NULL)\r
+ state->head->extra = Z_NULL;\r
+ state->mode = EXTRA;\r
+ case EXTRA:\r
+ if (state->flags & 0x0400) {\r
+ copy = state->length;\r
+ if (copy > have) copy = have;\r
+ if (copy) {\r
+ if (state->head != Z_NULL &&\r
+ state->head->extra != Z_NULL) {\r
+ len = state->head->extra_len - state->length;\r
+ zmemcpy(state->head->extra + len, next,\r
+ len + copy > state->head->extra_max ?\r
+ state->head->extra_max - len : copy);\r
+ }\r
+ if (state->flags & 0x0200)\r
+ state->check = crc32(state->check, next, copy);\r
+ have -= copy;\r
+ next += copy;\r
+ state->length -= copy;\r
+ }\r
+ if (state->length) goto inf_leave;\r
+ }\r
+ state->length = 0;\r
+ state->mode = NAME;\r
+ case NAME:\r
+ if (state->flags & 0x0800) {\r
+ if (have == 0) goto inf_leave;\r
+ copy = 0;\r
+ do {\r
+ len = (unsigned)(next[copy++]);\r
+ if (state->head != Z_NULL &&\r
+ state->head->name != Z_NULL &&\r
+ state->length < state->head->name_max)\r
+ state->head->name[state->length++] = len;\r
+ } while (len && copy < have);\r
+ if (state->flags & 0x0200)\r
+ state->check = crc32(state->check, next, copy);\r
+ have -= copy;\r
+ next += copy;\r
+ if (len) goto inf_leave;\r
+ }\r
+ else if (state->head != Z_NULL)\r
+ state->head->name = Z_NULL;\r
+ state->length = 0;\r
+ state->mode = COMMENT;\r
+ case COMMENT:\r
+ if (state->flags & 0x1000) {\r
+ if (have == 0) goto inf_leave;\r
+ copy = 0;\r
+ do {\r
+ len = (unsigned)(next[copy++]);\r
+ if (state->head != Z_NULL &&\r
+ state->head->comment != Z_NULL &&\r
+ state->length < state->head->comm_max)\r
+ state->head->comment[state->length++] = len;\r
+ } while (len && copy < have);\r
+ if (state->flags & 0x0200)\r
+ state->check = crc32(state->check, next, copy);\r
+ have -= copy;\r
+ next += copy;\r
+ if (len) goto inf_leave;\r
+ }\r
+ else if (state->head != Z_NULL)\r
+ state->head->comment = Z_NULL;\r
+ state->mode = HCRC;\r
+ case HCRC:\r
+ if (state->flags & 0x0200) {\r
+ NEEDBITS(16);\r
+ if (hold != (state->check & 0xffff)) {\r
+ strm->msg = (char *)"header crc mismatch";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ INITBITS();\r
+ }\r
+ if (state->head != Z_NULL) {\r
+ state->head->hcrc = (int)((state->flags >> 9) & 1);\r
+ state->head->done = 1;\r
+ }\r
+ strm->adler = state->check = crc32(0L, Z_NULL, 0);\r
+ state->mode = TYPE;\r
+ break;\r
+#endif\r
+ case DICTID:\r
+ NEEDBITS(32);\r
+ strm->adler = state->check = REVERSE(hold);\r
+ INITBITS();\r
+ state->mode = DICT;\r
+ case DICT:\r
+ if (state->havedict == 0) {\r
+ RESTORE();\r
+ return Z_NEED_DICT;\r
+ }\r
+ strm->adler = state->check = adler32(0L, Z_NULL, 0);\r
+ state->mode = TYPE;\r
+ case TYPE:\r
+ if (flush == Z_BLOCK || flush == Z_TREES) goto inf_leave;\r
+ case TYPEDO:\r
+ if (state->last) {\r
+ BYTEBITS();\r
+ state->mode = CHECK;\r
+ break;\r
+ }\r
+ NEEDBITS(3);\r
+ state->last = BITS(1);\r
+ DROPBITS(1);\r
+ switch (BITS(2)) {\r
+ case 0: /* stored block */\r
+ Tracev((stderr, "inflate: stored block%s\n",\r
+ state->last ? " (last)" : ""));\r
+ state->mode = STORED;\r
+ break;\r
+ case 1: /* fixed block */\r
+ fixedtables(state);\r
+ Tracev((stderr, "inflate: fixed codes block%s\n",\r
+ state->last ? " (last)" : ""));\r
+ state->mode = LEN_; /* decode codes */\r
+ if (flush == Z_TREES) {\r
+ DROPBITS(2);\r
+ goto inf_leave;\r
+ }\r
+ break;\r
+ case 2: /* dynamic block */\r
+ Tracev((stderr, "inflate: dynamic codes block%s\n",\r
+ state->last ? " (last)" : ""));\r
+ state->mode = TABLE;\r
+ break;\r
+ case 3:\r
+ strm->msg = (char *)"invalid block type";\r
+ state->mode = BAD;\r
+ }\r
+ DROPBITS(2);\r
+ break;\r
+ case STORED:\r
+ BYTEBITS(); /* go to byte boundary */\r
+ NEEDBITS(32);\r
+ if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {\r
+ strm->msg = (char *)"invalid stored block lengths";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ state->length = (unsigned)hold & 0xffff;\r
+ Tracev((stderr, "inflate: stored length %u\n",\r
+ state->length));\r
+ INITBITS();\r
+ state->mode = COPY_;\r
+ if (flush == Z_TREES) goto inf_leave;\r
+ case COPY_:\r
+ state->mode = COPY;\r
+ case COPY:\r
+ copy = state->length;\r
+ if (copy) {\r
+ if (copy > have) copy = have;\r
+ if (copy > left) copy = left;\r
+ if (copy == 0) goto inf_leave;\r
+ zmemcpy(put, next, copy);\r
+ have -= copy;\r
+ next += copy;\r
+ left -= copy;\r
+ put += copy;\r
+ state->length -= copy;\r
+ break;\r
+ }\r
+ Tracev((stderr, "inflate: stored end\n"));\r
+ state->mode = TYPE;\r
+ break;\r
+ case TABLE:\r
+ NEEDBITS(14);\r
+ state->nlen = BITS(5) + 257;\r
+ DROPBITS(5);\r
+ state->ndist = BITS(5) + 1;\r
+ DROPBITS(5);\r
+ state->ncode = BITS(4) + 4;\r
+ DROPBITS(4);\r
+#ifndef PKZIP_BUG_WORKAROUND\r
+ if (state->nlen > 286 || state->ndist > 30) {\r
+ strm->msg = (char *)"too many length or distance symbols";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+#endif\r
+ Tracev((stderr, "inflate: table sizes ok\n"));\r
+ state->have = 0;\r
+ state->mode = LENLENS;\r
+ case LENLENS:\r
+ while (state->have < state->ncode) {\r
+ NEEDBITS(3);\r
+ state->lens[order[state->have++]] = (unsigned short)BITS(3);\r
+ DROPBITS(3);\r
+ }\r
+ while (state->have < 19)\r
+ state->lens[order[state->have++]] = 0;\r
+ state->next = state->codes;\r
+ state->lencode = (code const FAR *)(state->next);\r
+ state->lenbits = 7;\r
+ ret = inflate_table(CODES, state->lens, 19, &(state->next),\r
+ &(state->lenbits), state->work);\r
+ if (ret) {\r
+ strm->msg = (char *)"invalid code lengths set";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ Tracev((stderr, "inflate: code lengths ok\n"));\r
+ state->have = 0;\r
+ state->mode = CODELENS;\r
+ case CODELENS:\r
+ while (state->have < state->nlen + state->ndist) {\r
+ for (;;) {\r
+ here = state->lencode[BITS(state->lenbits)];\r
+ if ((unsigned)(here.bits) <= bits) break;\r
+ PULLBYTE();\r
+ }\r
+ if (here.val < 16) {\r
+ NEEDBITS(here.bits);\r
+ DROPBITS(here.bits);\r
+ state->lens[state->have++] = here.val;\r
+ }\r
+ else {\r
+ if (here.val == 16) {\r
+ NEEDBITS(here.bits + 2);\r
+ DROPBITS(here.bits);\r
+ if (state->have == 0) {\r
+ strm->msg = (char *)"invalid bit length repeat";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ len = state->lens[state->have - 1];\r
+ copy = 3 + BITS(2);\r
+ DROPBITS(2);\r
+ }\r
+ else if (here.val == 17) {\r
+ NEEDBITS(here.bits + 3);\r
+ DROPBITS(here.bits);\r
+ len = 0;\r
+ copy = 3 + BITS(3);\r
+ DROPBITS(3);\r
+ }\r
+ else {\r
+ NEEDBITS(here.bits + 7);\r
+ DROPBITS(here.bits);\r
+ len = 0;\r
+ copy = 11 + BITS(7);\r
+ DROPBITS(7);\r
+ }\r
+ if (state->have + copy > state->nlen + state->ndist) {\r
+ strm->msg = (char *)"invalid bit length repeat";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ while (copy--)\r
+ state->lens[state->have++] = (unsigned short)len;\r
+ }\r
+ }\r
+\r
+ /* handle error breaks in while */\r
+ if (state->mode == BAD) break;\r
+\r
+ /* check for end-of-block code (better have one) */\r
+ if (state->lens[256] == 0) {\r
+ strm->msg = (char *)"invalid code -- missing end-of-block";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+\r
+ /* build code tables -- note: do not change the lenbits or distbits\r
+ values here (9 and 6) without reading the comments in inftrees.h\r
+ concerning the ENOUGH constants, which depend on those values */\r
+ state->next = state->codes;\r
+ state->lencode = (code const FAR *)(state->next);\r
+ state->lenbits = 9;\r
+ ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),\r
+ &(state->lenbits), state->work);\r
+ if (ret) {\r
+ strm->msg = (char *)"invalid literal/lengths set";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ state->distcode = (code const FAR *)(state->next);\r
+ state->distbits = 6;\r
+ ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,\r
+ &(state->next), &(state->distbits), state->work);\r
+ if (ret) {\r
+ strm->msg = (char *)"invalid distances set";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ Tracev((stderr, "inflate: codes ok\n"));\r
+ state->mode = LEN_;\r
+ if (flush == Z_TREES) goto inf_leave;\r
+ case LEN_:\r
+ state->mode = LEN;\r
+ case LEN:\r
+ if (have >= 6 && left >= 258) {\r
+ RESTORE();\r
+ inflate_fast(strm, out);\r
+ LOAD();\r
+ if (state->mode == TYPE)\r
+ state->back = -1;\r
+ break;\r
+ }\r
+ state->back = 0;\r
+ for (;;) {\r
+ here = state->lencode[BITS(state->lenbits)];\r
+ if ((unsigned)(here.bits) <= bits) break;\r
+ PULLBYTE();\r
+ }\r
+ if (here.op && (here.op & 0xf0) == 0) {\r
+ last = here;\r
+ for (;;) {\r
+ here = state->lencode[last.val +\r
+ (BITS(last.bits + last.op) >> last.bits)];\r
+ if ((unsigned)(last.bits + here.bits) <= bits) break;\r
+ PULLBYTE();\r
+ }\r
+ DROPBITS(last.bits);\r
+ state->back += last.bits;\r
+ }\r
+ DROPBITS(here.bits);\r
+ state->back += here.bits;\r
+ state->length = (unsigned)here.val;\r
+ if ((int)(here.op) == 0) {\r
+ Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\r
+ "inflate: literal '%c'\n" :\r
+ "inflate: literal 0x%02x\n", here.val));\r
+ state->mode = LIT;\r
+ break;\r
+ }\r
+ if (here.op & 32) {\r
+ Tracevv((stderr, "inflate: end of block\n"));\r
+ state->back = -1;\r
+ state->mode = TYPE;\r
+ break;\r
+ }\r
+ if (here.op & 64) {\r
+ strm->msg = (char *)"invalid literal/length code";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ state->extra = (unsigned)(here.op) & 15;\r
+ state->mode = LENEXT;\r
+ case LENEXT:\r
+ if (state->extra) {\r
+ NEEDBITS(state->extra);\r
+ state->length += BITS(state->extra);\r
+ DROPBITS(state->extra);\r
+ state->back += state->extra;\r
+ }\r
+ Tracevv((stderr, "inflate: length %u\n", state->length));\r
+ state->was = state->length;\r
+ state->mode = DIST;\r
+ case DIST:\r
+ for (;;) {\r
+ here = state->distcode[BITS(state->distbits)];\r
+ if ((unsigned)(here.bits) <= bits) break;\r
+ PULLBYTE();\r
+ }\r
+ if ((here.op & 0xf0) == 0) {\r
+ last = here;\r
+ for (;;) {\r
+ here = state->distcode[last.val +\r
+ (BITS(last.bits + last.op) >> last.bits)];\r
+ if ((unsigned)(last.bits + here.bits) <= bits) break;\r
+ PULLBYTE();\r
+ }\r
+ DROPBITS(last.bits);\r
+ state->back += last.bits;\r
+ }\r
+ DROPBITS(here.bits);\r
+ state->back += here.bits;\r
+ if (here.op & 64) {\r
+ strm->msg = (char *)"invalid distance code";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ state->offset = (unsigned)here.val;\r
+ state->extra = (unsigned)(here.op) & 15;\r
+ state->mode = DISTEXT;\r
+ case DISTEXT:\r
+ if (state->extra) {\r
+ NEEDBITS(state->extra);\r
+ state->offset += BITS(state->extra);\r
+ DROPBITS(state->extra);\r
+ state->back += state->extra;\r
+ }\r
+#ifdef INFLATE_STRICT\r
+ if (state->offset > state->dmax) {\r
+ strm->msg = (char *)"invalid distance too far back";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+#endif\r
+ Tracevv((stderr, "inflate: distance %u\n", state->offset));\r
+ state->mode = MATCH;\r
+ case MATCH:\r
+ if (left == 0) goto inf_leave;\r
+ copy = out - left;\r
+ if (state->offset > copy) { /* copy from window */\r
+ copy = state->offset - copy;\r
+ if (copy > state->whave) {\r
+ if (state->sane) {\r
+ strm->msg = (char *)"invalid distance too far back";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR\r
+ Trace((stderr, "inflate.c too far\n"));\r
+ copy -= state->whave;\r
+ if (copy > state->length) copy = state->length;\r
+ if (copy > left) copy = left;\r
+ left -= copy;\r
+ state->length -= copy;\r
+ do {\r
+ *put++ = 0;\r
+ } while (--copy);\r
+ if (state->length == 0) state->mode = LEN;\r
+ break;\r
+#endif\r
+ }\r
+ if (copy > state->wnext) {\r
+ copy -= state->wnext;\r
+ from = state->window + (state->wsize - copy);\r
+ }\r
+ else\r
+ from = state->window + (state->wnext - copy);\r
+ if (copy > state->length) copy = state->length;\r
+ }\r
+ else { /* copy from output */\r
+ from = put - state->offset;\r
+ copy = state->length;\r
+ }\r
+ if (copy > left) copy = left;\r
+ left -= copy;\r
+ state->length -= copy;\r
+ do {\r
+ *put++ = *from++;\r
+ } while (--copy);\r
+ if (state->length == 0) state->mode = LEN;\r
+ break;\r
+ case LIT:\r
+ if (left == 0) goto inf_leave;\r
+ *put++ = (unsigned char)(state->length);\r
+ left--;\r
+ state->mode = LEN;\r
+ break;\r
+ case CHECK:\r
+ if (state->wrap) {\r
+ NEEDBITS(32);\r
+ out -= left;\r
+ strm->total_out += out;\r
+ state->total += out;\r
+ if (out)\r
+ strm->adler = state->check =\r
+ UPDATE(state->check, put - out, out);\r
+ out = left;\r
+ if ((\r
+#ifdef GUNZIP\r
+ state->flags ? hold :\r
+#endif\r
+ REVERSE(hold)) != state->check) {\r
+ strm->msg = (char *)"incorrect data check";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ INITBITS();\r
+ Tracev((stderr, "inflate: check matches trailer\n"));\r
+ }\r
+#ifdef GUNZIP\r
+ state->mode = LENGTH;\r
+ case LENGTH:\r
+ if (state->wrap && state->flags) {\r
+ NEEDBITS(32);\r
+ if (hold != (state->total & 0xffffffffUL)) {\r
+ strm->msg = (char *)"incorrect length check";\r
+ state->mode = BAD;\r
+ break;\r
+ }\r
+ INITBITS();\r
+ Tracev((stderr, "inflate: length matches trailer\n"));\r
+ }\r
+#endif\r
+ state->mode = DONE;\r
+ case DONE:\r
+ ret = Z_STREAM_END;\r
+ goto inf_leave;\r
+ case BAD:\r
+ ret = Z_DATA_ERROR;\r
+ goto inf_leave;\r
+ case MEM:\r
+ return Z_MEM_ERROR;\r
+ case SYNC:\r
+ default:\r
+ return Z_STREAM_ERROR;\r
+ }\r
+\r
+ /*\r
+ Return from inflate(), updating the total counts and the check value.\r
+ If there was no progress during the inflate() call, return a buffer\r
+ error. Call updatewindow() to create and/or update the window state.\r
+ Note: a memory error from inflate() is non-recoverable.\r
+ */\r
+ inf_leave:\r
+ RESTORE();\r
+ if (state->wsize || (state->mode < CHECK && out != strm->avail_out))\r
+ if (updatewindow(strm, out)) {\r
+ state->mode = MEM;\r
+ return Z_MEM_ERROR;\r
+ }\r
+ in -= strm->avail_in;\r
+ out -= strm->avail_out;\r
+ strm->total_in += in;\r
+ strm->total_out += out;\r
+ state->total += out;\r
+ if (state->wrap && out)\r
+ strm->adler = state->check =\r
+ UPDATE(state->check, strm->next_out - out, out);\r
+ strm->data_type = state->bits + (state->last ? 64 : 0) +\r
+ (state->mode == TYPE ? 128 : 0) +\r
+ (state->mode == LEN_ || state->mode == COPY_ ? 256 : 0);\r
+ if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK)\r
+ ret = Z_BUF_ERROR;\r
+ return ret;\r
+}\r
+\r
+int ZEXPORT inflateEnd(strm)\r
+z_streamp strm;\r
+{\r
+ struct inflate_state FAR *state;\r
+ if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)\r
+ return Z_STREAM_ERROR;\r
+ state = (struct inflate_state FAR *)strm->state;\r
+ if (state->window != Z_NULL) ZFREE(strm, state->window);\r
+ ZFREE(strm, strm->state);\r
+ strm->state = Z_NULL;\r
+ Tracev((stderr, "inflate: end\n"));\r
+ return Z_OK;\r
+}\r
+\r
+int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength)\r
+z_streamp strm;\r
+const Bytef *dictionary;\r
+uInt dictLength;\r
+{\r
+ struct inflate_state FAR *state;\r
+ unsigned long id;\r
+\r
+ /* check state */\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+ state = (struct inflate_state FAR *)strm->state;\r
+ if (state->wrap != 0 && state->mode != DICT)\r
+ return Z_STREAM_ERROR;\r
+\r
+ /* check for correct dictionary id */\r
+ if (state->mode == DICT) {\r
+ id = adler32(0L, Z_NULL, 0);\r
+ id = adler32(id, dictionary, dictLength);\r
+ if (id != state->check)\r
+ return Z_DATA_ERROR;\r
+ }\r
+\r
+ /* copy dictionary to window */\r
+ if (updatewindow(strm, strm->avail_out)) {\r
+ state->mode = MEM;\r
+ return Z_MEM_ERROR;\r
+ }\r
+ if (dictLength > state->wsize) {\r
+ zmemcpy(state->window, dictionary + dictLength - state->wsize,\r
+ state->wsize);\r
+ state->whave = state->wsize;\r
+ }\r
+ else {\r
+ zmemcpy(state->window + state->wsize - dictLength, dictionary,\r
+ dictLength);\r
+ state->whave = dictLength;\r
+ }\r
+ state->havedict = 1;\r
+ Tracev((stderr, "inflate: dictionary set\n"));\r
+ return Z_OK;\r
+}\r
+\r
+int ZEXPORT inflateGetHeader(strm, head)\r
+z_streamp strm;\r
+gz_headerp head;\r
+{\r
+ struct inflate_state FAR *state;\r
+\r
+ /* check state */\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+ state = (struct inflate_state FAR *)strm->state;\r
+ if ((state->wrap & 2) == 0) return Z_STREAM_ERROR;\r
+\r
+ /* save header structure */\r
+ state->head = head;\r
+ head->done = 0;\r
+ return Z_OK;\r
+}\r
+\r
+/*\r
+ Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found\r
+ or when out of input. When called, *have is the number of pattern bytes\r
+ found in order so far, in 0..3. On return *have is updated to the new\r
+ state. If on return *have equals four, then the pattern was found and the\r
+ return value is how many bytes were read including the last byte of the\r
+ pattern. If *have is less than four, then the pattern has not been found\r
+ yet and the return value is len. In the latter case, syncsearch() can be\r
+ called again with more data and the *have state. *have is initialized to\r
+ zero for the first call.\r
+ */\r
+local unsigned syncsearch(have, buf, len)\r
+unsigned FAR *have;\r
+unsigned char FAR *buf;\r
+unsigned len;\r
+{\r
+ unsigned got;\r
+ unsigned next;\r
+\r
+ got = *have;\r
+ next = 0;\r
+ while (next < len && got < 4) {\r
+ if ((int)(buf[next]) == (got < 2 ? 0 : 0xff))\r
+ got++;\r
+ else if (buf[next])\r
+ got = 0;\r
+ else\r
+ got = 4 - got;\r
+ next++;\r
+ }\r
+ *have = got;\r
+ return next;\r
+}\r
+\r
+int ZEXPORT inflateSync(strm)\r
+z_streamp strm;\r
+{\r
+ unsigned len; /* number of bytes to look at or looked at */\r
+ unsigned long in, out; /* temporary to save total_in and total_out */\r
+ unsigned char buf[4]; /* to restore bit buffer to byte string */\r
+ struct inflate_state FAR *state;\r
+\r
+ /* check parameters */\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+ state = (struct inflate_state FAR *)strm->state;\r
+ if (strm->avail_in == 0 && state->bits < 8) return Z_BUF_ERROR;\r
+\r
+ /* if first time, start search in bit buffer */\r
+ if (state->mode != SYNC) {\r
+ state->mode = SYNC;\r
+ state->hold <<= state->bits & 7;\r
+ state->bits -= state->bits & 7;\r
+ len = 0;\r
+ while (state->bits >= 8) {\r
+ buf[len++] = (unsigned char)(state->hold);\r
+ state->hold >>= 8;\r
+ state->bits -= 8;\r
+ }\r
+ state->have = 0;\r
+ syncsearch(&(state->have), buf, len);\r
+ }\r
+\r
+ /* search available input */\r
+ len = syncsearch(&(state->have), strm->next_in, strm->avail_in);\r
+ strm->avail_in -= len;\r
+ strm->next_in += len;\r
+ strm->total_in += len;\r
+\r
+ /* return no joy or set up to restart inflate() on a new block */\r
+ if (state->have != 4) return Z_DATA_ERROR;\r
+ in = strm->total_in; out = strm->total_out;\r
+ inflateReset(strm);\r
+ strm->total_in = in; strm->total_out = out;\r
+ state->mode = TYPE;\r
+ return Z_OK;\r
+}\r
+\r
+/*\r
+ Returns true if inflate is currently at the end of a block generated by\r
+ Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP\r
+ implementation to provide an additional safety check. PPP uses\r
+ Z_SYNC_FLUSH but removes the length bytes of the resulting empty stored\r
+ block. When decompressing, PPP checks that at the end of input packet,\r
+ inflate is waiting for these length bytes.\r
+ */\r
+int ZEXPORT inflateSyncPoint(strm)\r
+z_streamp strm;\r
+{\r
+ struct inflate_state FAR *state;\r
+\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+ state = (struct inflate_state FAR *)strm->state;\r
+ return state->mode == STORED && state->bits == 0;\r
+}\r
+\r
+int ZEXPORT inflateCopy(dest, source)\r
+z_streamp dest;\r
+z_streamp source;\r
+{\r
+ struct inflate_state FAR *state;\r
+ struct inflate_state FAR *copy;\r
+ unsigned char FAR *window;\r
+ unsigned wsize;\r
+\r
+ /* check input */\r
+ if (dest == Z_NULL || source == Z_NULL || source->state == Z_NULL ||\r
+ source->zalloc == (alloc_func)0 || source->zfree == (free_func)0)\r
+ return Z_STREAM_ERROR;\r
+ state = (struct inflate_state FAR *)source->state;\r
+\r
+ /* allocate space */\r
+ copy = (struct inflate_state FAR *)\r
+ ZALLOC(source, 1, sizeof(struct inflate_state));\r
+ if (copy == Z_NULL) return Z_MEM_ERROR;\r
+ window = Z_NULL;\r
+ if (state->window != Z_NULL) {\r
+ window = (unsigned char FAR *)\r
+ ZALLOC(source, 1U << state->wbits, sizeof(unsigned char));\r
+ if (window == Z_NULL) {\r
+ ZFREE(source, copy);\r
+ return Z_MEM_ERROR;\r
+ }\r
+ }\r
+\r
+ /* copy state */\r
+ zmemcpy(dest, source, sizeof(z_stream));\r
+ zmemcpy(copy, state, sizeof(struct inflate_state));\r
+ if (state->lencode >= state->codes &&\r
+ state->lencode <= state->codes + ENOUGH - 1) {\r
+ copy->lencode = copy->codes + (state->lencode - state->codes);\r
+ copy->distcode = copy->codes + (state->distcode - state->codes);\r
+ }\r
+ copy->next = copy->codes + (state->next - state->codes);\r
+ if (window != Z_NULL) {\r
+ wsize = 1U << state->wbits;\r
+ zmemcpy(window, state->window, wsize);\r
+ }\r
+ copy->window = window;\r
+ dest->state = (struct internal_state FAR *)copy;\r
+ return Z_OK;\r
+}\r
+\r
+int ZEXPORT inflateUndermine(strm, subvert)\r
+z_streamp strm;\r
+int subvert;\r
+{\r
+ struct inflate_state FAR *state;\r
+\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;\r
+ state = (struct inflate_state FAR *)strm->state;\r
+ state->sane = !subvert;\r
+#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR\r
+ return Z_OK;\r
+#else\r
+ state->sane = 1;\r
+ return Z_DATA_ERROR;\r
+#endif\r
+}\r
+\r
+long ZEXPORT inflateMark(strm)\r
+z_streamp strm;\r
+{\r
+ struct inflate_state FAR *state;\r
+\r
+ if (strm == Z_NULL || strm->state == Z_NULL) return -1L << 16;\r
+ state = (struct inflate_state FAR *)strm->state;\r
+ return ((long)(state->back) << 16) +\r
+ (state->mode == COPY ? state->length :\r
+ (state->mode == MATCH ? state->was - state->length : 0));\r
+}\r
--- /dev/null
+/* inflate.h -- internal inflate state definition\r
+ * Copyright (C) 1995-2009 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/* WARNING: this file should *not* be used by applications. It is\r
+ part of the implementation of the compression library and is\r
+ subject to change. Applications should only use zlib.h.\r
+ */\r
+\r
+/* define NO_GZIP when compiling if you want to disable gzip header and\r
+ trailer decoding by inflate(). NO_GZIP would be used to avoid linking in\r
+ the crc code when it is not needed. For shared libraries, gzip decoding\r
+ should be left enabled. */\r
+#ifndef NO_GZIP\r
+# define GUNZIP\r
+#endif\r
+\r
+/* Possible inflate modes between inflate() calls */\r
+typedef enum {\r
+ HEAD, /* i: waiting for magic header */\r
+ FLAGS, /* i: waiting for method and flags (gzip) */\r
+ TIME, /* i: waiting for modification time (gzip) */\r
+ OS, /* i: waiting for extra flags and operating system (gzip) */\r
+ EXLEN, /* i: waiting for extra length (gzip) */\r
+ EXTRA, /* i: waiting for extra bytes (gzip) */\r
+ NAME, /* i: waiting for end of file name (gzip) */\r
+ COMMENT, /* i: waiting for end of comment (gzip) */\r
+ HCRC, /* i: waiting for header crc (gzip) */\r
+ DICTID, /* i: waiting for dictionary check value */\r
+ DICT, /* waiting for inflateSetDictionary() call */\r
+ TYPE, /* i: waiting for type bits, including last-flag bit */\r
+ TYPEDO, /* i: same, but skip check to exit inflate on new block */\r
+ STORED, /* i: waiting for stored size (length and complement) */\r
+ COPY_, /* i/o: same as COPY below, but only first time in */\r
+ COPY, /* i/o: waiting for input or output to copy stored block */\r
+ TABLE, /* i: waiting for dynamic block table lengths */\r
+ LENLENS, /* i: waiting for code length code lengths */\r
+ CODELENS, /* i: waiting for length/lit and distance code lengths */\r
+ LEN_, /* i: same as LEN below, but only first time in */\r
+ LEN, /* i: waiting for length/lit/eob code */\r
+ LENEXT, /* i: waiting for length extra bits */\r
+ DIST, /* i: waiting for distance code */\r
+ DISTEXT, /* i: waiting for distance extra bits */\r
+ MATCH, /* o: waiting for output space to copy string */\r
+ LIT, /* o: waiting for output space to write literal */\r
+ CHECK, /* i: waiting for 32-bit check value */\r
+ LENGTH, /* i: waiting for 32-bit length (gzip) */\r
+ DONE, /* finished check, done -- remain here until reset */\r
+ BAD, /* got a data error -- remain here until reset */\r
+ MEM, /* got an inflate() memory error -- remain here until reset */\r
+ SYNC /* looking for synchronization bytes to restart inflate() */\r
+} inflate_mode;\r
+\r
+/*\r
+ State transitions between above modes -\r
+\r
+ (most modes can go to BAD or MEM on error -- not shown for clarity)\r
+\r
+ Process header:\r
+ HEAD -> (gzip) or (zlib) or (raw)\r
+ (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT ->\r
+ HCRC -> TYPE\r
+ (zlib) -> DICTID or TYPE\r
+ DICTID -> DICT -> TYPE\r
+ (raw) -> TYPEDO\r
+ Read deflate blocks:\r
+ TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK\r
+ STORED -> COPY_ -> COPY -> TYPE\r
+ TABLE -> LENLENS -> CODELENS -> LEN_\r
+ LEN_ -> LEN\r
+ Read deflate codes in fixed or dynamic block:\r
+ LEN -> LENEXT or LIT or TYPE\r
+ LENEXT -> DIST -> DISTEXT -> MATCH -> LEN\r
+ LIT -> LEN\r
+ Process trailer:\r
+ CHECK -> LENGTH -> DONE\r
+ */\r
+\r
+/* state maintained between inflate() calls. Approximately 10K bytes. */\r
+struct inflate_state {\r
+ inflate_mode mode; /* current inflate mode */\r
+ int last; /* true if processing last block */\r
+ int wrap; /* bit 0 true for zlib, bit 1 true for gzip */\r
+ int havedict; /* true if dictionary provided */\r
+ int flags; /* gzip header method and flags (0 if zlib) */\r
+ unsigned dmax; /* zlib header max distance (INFLATE_STRICT) */\r
+ unsigned long check; /* protected copy of check value */\r
+ unsigned long total; /* protected copy of output count */\r
+ gz_headerp head; /* where to save gzip header information */\r
+ /* sliding window */\r
+ unsigned wbits; /* log base 2 of requested window size */\r
+ unsigned wsize; /* window size or zero if not using window */\r
+ unsigned whave; /* valid bytes in the window */\r
+ unsigned wnext; /* window write index */\r
+ unsigned char FAR *window; /* allocated sliding window, if needed */\r
+ /* bit accumulator */\r
+ unsigned long hold; /* input bit accumulator */\r
+ unsigned bits; /* number of bits in "in" */\r
+ /* for string and stored block copying */\r
+ unsigned length; /* literal or length of data to copy */\r
+ unsigned offset; /* distance back to copy string from */\r
+ /* for table and code decoding */\r
+ unsigned extra; /* extra bits needed */\r
+ /* fixed and dynamic code tables */\r
+ code const FAR *lencode; /* starting table for length/literal codes */\r
+ code const FAR *distcode; /* starting table for distance codes */\r
+ unsigned lenbits; /* index bits for lencode */\r
+ unsigned distbits; /* index bits for distcode */\r
+ /* dynamic table building */\r
+ unsigned ncode; /* number of code length code lengths */\r
+ unsigned nlen; /* number of length code lengths */\r
+ unsigned ndist; /* number of distance code lengths */\r
+ unsigned have; /* number of code lengths in lens[] */\r
+ code FAR *next; /* next available space in codes[] */\r
+ unsigned short lens[320]; /* temporary storage for code lengths */\r
+ unsigned short work[288]; /* work area for code table building */\r
+ code codes[ENOUGH]; /* space for code tables */\r
+ int sane; /* if false, allow invalid distance too far */\r
+ int back; /* bits back of last unprocessed length/lit */\r
+ unsigned was; /* initial length of match */\r
+};\r
--- /dev/null
+/* inftrees.c -- generate Huffman trees for efficient decoding\r
+ * Copyright (C) 1995-2010 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+#include "zutil.h"\r
+#include "inftrees.h"\r
+\r
+#define MAXBITS 15\r
+\r
+const char inflate_copyright[] =\r
+ " inflate 1.2.5 Copyright 1995-2010 Mark Adler ";\r
+/*\r
+ If you use the zlib library in a product, an acknowledgment is welcome\r
+ in the documentation of your product. If for some reason you cannot\r
+ include such an acknowledgment, I would appreciate that you keep this\r
+ copyright string in the executable of your product.\r
+ */\r
+\r
+/*\r
+ Build a set of tables to decode the provided canonical Huffman code.\r
+ The code lengths are lens[0..codes-1]. The result starts at *table,\r
+ whose indices are 0..2^bits-1. work is a writable array of at least\r
+ lens shorts, which is used as a work area. type is the type of code\r
+ to be generated, CODES, LENS, or DISTS. On return, zero is success,\r
+ -1 is an invalid code, and +1 means that ENOUGH isn't enough. table\r
+ on return points to the next available entry's address. bits is the\r
+ requested root table index bits, and on return it is the actual root\r
+ table index bits. It will differ if the request is greater than the\r
+ longest code or if it is less than the shortest code.\r
+ */\r
+int ZLIB_INTERNAL inflate_table(type, lens, codes, table, bits, work)\r
+codetype type;\r
+unsigned short FAR *lens;\r
+unsigned codes;\r
+code FAR * FAR *table;\r
+unsigned FAR *bits;\r
+unsigned short FAR *work;\r
+{\r
+ unsigned len; /* a code's length in bits */\r
+ unsigned sym; /* index of code symbols */\r
+ unsigned min, max; /* minimum and maximum code lengths */\r
+ unsigned root; /* number of index bits for root table */\r
+ unsigned curr; /* number of index bits for current table */\r
+ unsigned drop; /* code bits to drop for sub-table */\r
+ int left; /* number of prefix codes available */\r
+ unsigned used; /* code entries in table used */\r
+ unsigned huff; /* Huffman code */\r
+ unsigned incr; /* for incrementing code, index */\r
+ unsigned fill; /* index for replicating entries */\r
+ unsigned low; /* low bits for current root entry */\r
+ unsigned mask; /* mask for low root bits */\r
+ code here; /* table entry for duplication */\r
+ code FAR *next; /* next available space in table */\r
+ const unsigned short FAR *base; /* base value table to use */\r
+ const unsigned short FAR *extra; /* extra bits table to use */\r
+ int end; /* use base and extra for symbol > end */\r
+ unsigned short count[MAXBITS+1]; /* number of codes of each length */\r
+ unsigned short offs[MAXBITS+1]; /* offsets in table for each length */\r
+ static const unsigned short lbase[31] = { /* Length codes 257..285 base */\r
+ 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,\r
+ 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};\r
+ static const unsigned short lext[31] = { /* Length codes 257..285 extra */\r
+ 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,\r
+ 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 73, 195};\r
+ static const unsigned short dbase[32] = { /* Distance codes 0..29 base */\r
+ 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,\r
+ 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,\r
+ 8193, 12289, 16385, 24577, 0, 0};\r
+ static const unsigned short dext[32] = { /* Distance codes 0..29 extra */\r
+ 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,\r
+ 23, 23, 24, 24, 25, 25, 26, 26, 27, 27,\r
+ 28, 28, 29, 29, 64, 64};\r
+\r
+ /*\r
+ Process a set of code lengths to create a canonical Huffman code. The\r
+ code lengths are lens[0..codes-1]. Each length corresponds to the\r
+ symbols 0..codes-1. The Huffman code is generated by first sorting the\r
+ symbols by length from short to long, and retaining the symbol order\r
+ for codes with equal lengths. Then the code starts with all zero bits\r
+ for the first code of the shortest length, and the codes are integer\r
+ increments for the same length, and zeros are appended as the length\r
+ increases. For the deflate format, these bits are stored backwards\r
+ from their more natural integer increment ordering, and so when the\r
+ decoding tables are built in the large loop below, the integer codes\r
+ are incremented backwards.\r
+\r
+ This routine assumes, but does not check, that all of the entries in\r
+ lens[] are in the range 0..MAXBITS. The caller must assure this.\r
+ 1..MAXBITS is interpreted as that code length. zero means that that\r
+ symbol does not occur in this code.\r
+\r
+ The codes are sorted by computing a count of codes for each length,\r
+ creating from that a table of starting indices for each length in the\r
+ sorted table, and then entering the symbols in order in the sorted\r
+ table. The sorted table is work[], with that space being provided by\r
+ the caller.\r
+\r
+ The length counts are used for other purposes as well, i.e. finding\r
+ the minimum and maximum length codes, determining if there are any\r
+ codes at all, checking for a valid set of lengths, and looking ahead\r
+ at length counts to determine sub-table sizes when building the\r
+ decoding tables.\r
+ */\r
+\r
+ /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */\r
+ for (len = 0; len <= MAXBITS; len++)\r
+ count[len] = 0;\r
+ for (sym = 0; sym < codes; sym++)\r
+ count[lens[sym]]++;\r
+\r
+ /* bound code lengths, force root to be within code lengths */\r
+ root = *bits;\r
+ for (max = MAXBITS; max >= 1; max--)\r
+ if (count[max] != 0) break;\r
+ if (root > max) root = max;\r
+ if (max == 0) { /* no symbols to code at all */\r
+ here.op = (unsigned char)64; /* invalid code marker */\r
+ here.bits = (unsigned char)1;\r
+ here.val = (unsigned short)0;\r
+ *(*table)++ = here; /* make a table to force an error */\r
+ *(*table)++ = here;\r
+ *bits = 1;\r
+ return 0; /* no symbols, but wait for decoding to report error */\r
+ }\r
+ for (min = 1; min < max; min++)\r
+ if (count[min] != 0) break;\r
+ if (root < min) root = min;\r
+\r
+ /* check for an over-subscribed or incomplete set of lengths */\r
+ left = 1;\r
+ for (len = 1; len <= MAXBITS; len++) {\r
+ left <<= 1;\r
+ left -= count[len];\r
+ if (left < 0) return -1; /* over-subscribed */\r
+ }\r
+ if (left > 0 && (type == CODES || max != 1))\r
+ return -1; /* incomplete set */\r
+\r
+ /* generate offsets into symbol table for each length for sorting */\r
+ offs[1] = 0;\r
+ for (len = 1; len < MAXBITS; len++)\r
+ offs[len + 1] = offs[len] + count[len];\r
+\r
+ /* sort symbols by length, by symbol order within each length */\r
+ for (sym = 0; sym < codes; sym++)\r
+ if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;\r
+\r
+ /*\r
+ Create and fill in decoding tables. In this loop, the table being\r
+ filled is at next and has curr index bits. The code being used is huff\r
+ with length len. That code is converted to an index by dropping drop\r
+ bits off of the bottom. For codes where len is less than drop + curr,\r
+ those top drop + curr - len bits are incremented through all values to\r
+ fill the table with replicated entries.\r
+\r
+ root is the number of index bits for the root table. When len exceeds\r
+ root, sub-tables are created pointed to by the root entry with an index\r
+ of the low root bits of huff. This is saved in low to check for when a\r
+ new sub-table should be started. drop is zero when the root table is\r
+ being filled, and drop is root when sub-tables are being filled.\r
+\r
+ When a new sub-table is needed, it is necessary to look ahead in the\r
+ code lengths to determine what size sub-table is needed. The length\r
+ counts are used for this, and so count[] is decremented as codes are\r
+ entered in the tables.\r
+\r
+ used keeps track of how many table entries have been allocated from the\r
+ provided *table space. It is checked for LENS and DIST tables against\r
+ the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in\r
+ the initial root table size constants. See the comments in inftrees.h\r
+ for more information.\r
+\r
+ sym increments through all symbols, and the loop terminates when\r
+ all codes of length max, i.e. all codes, have been processed. This\r
+ routine permits incomplete codes, so another loop after this one fills\r
+ in the rest of the decoding tables with invalid code markers.\r
+ */\r
+\r
+ /* set up for code type */\r
+ switch (type) {\r
+ case CODES:\r
+ base = extra = work; /* dummy value--not used */\r
+ end = 19;\r
+ break;\r
+ case LENS:\r
+ base = lbase;\r
+ base -= 257;\r
+ extra = lext;\r
+ extra -= 257;\r
+ end = 256;\r
+ break;\r
+ default: /* DISTS */\r
+ base = dbase;\r
+ extra = dext;\r
+ end = -1;\r
+ }\r
+\r
+ /* initialize state for loop */\r
+ huff = 0; /* starting code */\r
+ sym = 0; /* starting code symbol */\r
+ len = min; /* starting code length */\r
+ next = *table; /* current table to fill in */\r
+ curr = root; /* current table index bits */\r
+ drop = 0; /* current bits to drop from code for index */\r
+ low = (unsigned)(-1); /* trigger new sub-table when len > root */\r
+ used = 1U << root; /* use root table entries */\r
+ mask = used - 1; /* mask for comparing low */\r
+\r
+ /* check available table space */\r
+ if ((type == LENS && used >= ENOUGH_LENS) ||\r
+ (type == DISTS && used >= ENOUGH_DISTS))\r
+ return 1;\r
+\r
+ /* process all codes and make table entries */\r
+ for (;;) {\r
+ /* create table entry */\r
+ here.bits = (unsigned char)(len - drop);\r
+ if ((int)(work[sym]) < end) {\r
+ here.op = (unsigned char)0;\r
+ here.val = work[sym];\r
+ }\r
+ else if ((int)(work[sym]) > end) {\r
+ here.op = (unsigned char)(extra[work[sym]]);\r
+ here.val = base[work[sym]];\r
+ }\r
+ else {\r
+ here.op = (unsigned char)(32 + 64); /* end of block */\r
+ here.val = 0;\r
+ }\r
+\r
+ /* replicate for those indices with low len bits equal to huff */\r
+ incr = 1U << (len - drop);\r
+ fill = 1U << curr;\r
+ min = fill; /* save offset to next table */\r
+ do {\r
+ fill -= incr;\r
+ next[(huff >> drop) + fill] = here;\r
+ } while (fill != 0);\r
+\r
+ /* backwards increment the len-bit code huff */\r
+ incr = 1U << (len - 1);\r
+ while (huff & incr)\r
+ incr >>= 1;\r
+ if (incr != 0) {\r
+ huff &= incr - 1;\r
+ huff += incr;\r
+ }\r
+ else\r
+ huff = 0;\r
+\r
+ /* go to next symbol, update count, len */\r
+ sym++;\r
+ if (--(count[len]) == 0) {\r
+ if (len == max) break;\r
+ len = lens[work[sym]];\r
+ }\r
+\r
+ /* create new sub-table if needed */\r
+ if (len > root && (huff & mask) != low) {\r
+ /* if first time, transition to sub-tables */\r
+ if (drop == 0)\r
+ drop = root;\r
+\r
+ /* increment past last table */\r
+ next += min; /* here min is 1 << curr */\r
+\r
+ /* determine length of next table */\r
+ curr = len - drop;\r
+ left = (int)(1 << curr);\r
+ while (curr + drop < max) {\r
+ left -= count[curr + drop];\r
+ if (left <= 0) break;\r
+ curr++;\r
+ left <<= 1;\r
+ }\r
+\r
+ /* check for enough space */\r
+ used += 1U << curr;\r
+ if ((type == LENS && used >= ENOUGH_LENS) ||\r
+ (type == DISTS && used >= ENOUGH_DISTS))\r
+ return 1;\r
+\r
+ /* point entry in root table to sub-table */\r
+ low = huff & mask;\r
+ (*table)[low].op = (unsigned char)curr;\r
+ (*table)[low].bits = (unsigned char)root;\r
+ (*table)[low].val = (unsigned short)(next - *table);\r
+ }\r
+ }\r
+\r
+ /*\r
+ Fill in rest of table for incomplete codes. This loop is similar to the\r
+ loop above in incrementing huff for table indices. It is assumed that\r
+ len is equal to curr + drop, so there is no loop needed to increment\r
+ through high index bits. When the current sub-table is filled, the loop\r
+ drops back to the root table to fill in any remaining entries there.\r
+ */\r
+ here.op = (unsigned char)64; /* invalid code marker */\r
+ here.bits = (unsigned char)(len - drop);\r
+ here.val = (unsigned short)0;\r
+ while (huff != 0) {\r
+ /* when done with sub-table, drop back to root table */\r
+ if (drop != 0 && (huff & mask) != low) {\r
+ drop = 0;\r
+ len = root;\r
+ next = *table;\r
+ here.bits = (unsigned char)len;\r
+ }\r
+\r
+ /* put invalid code marker in table */\r
+ next[huff >> drop] = here;\r
+\r
+ /* backwards increment the len-bit code huff */\r
+ incr = 1U << (len - 1);\r
+ while (huff & incr)\r
+ incr >>= 1;\r
+ if (incr != 0) {\r
+ huff &= incr - 1;\r
+ huff += incr;\r
+ }\r
+ else\r
+ huff = 0;\r
+ }\r
+\r
+ /* set return parameters */\r
+ *table += used;\r
+ *bits = root;\r
+ return 0;\r
+}\r
--- /dev/null
+/* inftrees.h -- header to use inftrees.c\r
+ * Copyright (C) 1995-2005, 2010 Mark Adler\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/* WARNING: this file should *not* be used by applications. It is\r
+ part of the implementation of the compression library and is\r
+ subject to change. Applications should only use zlib.h.\r
+ */\r
+\r
+/* Structure for decoding tables. Each entry provides either the\r
+ information needed to do the operation requested by the code that\r
+ indexed that table entry, or it provides a pointer to another\r
+ table that indexes more bits of the code. op indicates whether\r
+ the entry is a pointer to another table, a literal, a length or\r
+ distance, an end-of-block, or an invalid code. For a table\r
+ pointer, the low four bits of op is the number of index bits of\r
+ that table. For a length or distance, the low four bits of op\r
+ is the number of extra bits to get after the code. bits is\r
+ the number of bits in this code or part of the code to drop off\r
+ of the bit buffer. val is the actual byte to output in the case\r
+ of a literal, the base length or distance, or the offset from\r
+ the current table to the next table. Each entry is four bytes. */\r
+typedef struct {\r
+ unsigned char op; /* operation, extra bits, table bits */\r
+ unsigned char bits; /* bits in this part of the code */\r
+ unsigned short val; /* offset in table or code value */\r
+} code;\r
+\r
+/* op values as set by inflate_table():\r
+ 00000000 - literal\r
+ 0000tttt - table link, tttt != 0 is the number of table index bits\r
+ 0001eeee - length or distance, eeee is the number of extra bits\r
+ 01100000 - end of block\r
+ 01000000 - invalid code\r
+ */\r
+\r
+/* Maximum size of the dynamic table. The maximum number of code structures is\r
+ 1444, which is the sum of 852 for literal/length codes and 592 for distance\r
+ codes. These values were found by exhaustive searches using the program\r
+ examples/enough.c found in the zlib distribtution. The arguments to that\r
+ program are the number of symbols, the initial root table size, and the\r
+ maximum bit length of a code. "enough 286 9 15" for literal/length codes\r
+ returns returns 852, and "enough 30 6 15" for distance codes returns 592.\r
+ The initial root table size (9 or 6) is found in the fifth argument of the\r
+ inflate_table() calls in inflate.c and infback.c. If the root table size is\r
+ changed, then these maximum sizes would be need to be recalculated and\r
+ updated. */\r
+#define ENOUGH_LENS 852\r
+#define ENOUGH_DISTS 592\r
+#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)\r
+\r
+/* Type of code to build for inflate_table() */\r
+typedef enum {\r
+ CODES,\r
+ LENS,\r
+ DISTS\r
+} codetype;\r
+\r
+int ZLIB_INTERNAL inflate_table OF((codetype type, unsigned short FAR *lens,\r
+ unsigned codes, code FAR * FAR *table,\r
+ unsigned FAR *bits, unsigned short FAR *work));\r
--- /dev/null
+/* trees.c -- output deflated data using Huffman coding\r
+ * Copyright (C) 1995-2010 Jean-loup Gailly\r
+ * detect_data_type() function provided freely by Cosmin Truta, 2006\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/*\r
+ * ALGORITHM\r
+ *\r
+ * The "deflation" process uses several Huffman trees. The more\r
+ * common source values are represented by shorter bit sequences.\r
+ *\r
+ * Each code tree is stored in a compressed form which is itself\r
+ * a Huffman encoding of the lengths of all the code strings (in\r
+ * ascending order by source values). The actual code strings are\r
+ * reconstructed from the lengths in the inflate process, as described\r
+ * in the deflate specification.\r
+ *\r
+ * REFERENCES\r
+ *\r
+ * Deutsch, L.P.,"'Deflate' Compressed Data Format Specification".\r
+ * Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc\r
+ *\r
+ * Storer, James A.\r
+ * Data Compression: Methods and Theory, pp. 49-50.\r
+ * Computer Science Press, 1988. ISBN 0-7167-8156-5.\r
+ *\r
+ * Sedgewick, R.\r
+ * Algorithms, p290.\r
+ * Addison-Wesley, 1983. ISBN 0-201-06672-6.\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+/* #define GEN_TREES_H */\r
+\r
+#include "deflate.h"\r
+\r
+#ifdef DEBUG\r
+# include <ctype.h>\r
+#endif\r
+\r
+/* ===========================================================================\r
+ * Constants\r
+ */\r
+\r
+#define MAX_BL_BITS 7\r
+/* Bit length codes must not exceed MAX_BL_BITS bits */\r
+\r
+#define END_BLOCK 256\r
+/* end of block literal code */\r
+\r
+#define REP_3_6 16\r
+/* repeat previous bit length 3-6 times (2 bits of repeat count) */\r
+\r
+#define REPZ_3_10 17\r
+/* repeat a zero length 3-10 times (3 bits of repeat count) */\r
+\r
+#define REPZ_11_138 18\r
+/* repeat a zero length 11-138 times (7 bits of repeat count) */\r
+\r
+local const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */\r
+ = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0};\r
+\r
+local const int extra_dbits[D_CODES] /* extra bits for each distance code */\r
+ = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};\r
+\r
+local const int extra_blbits[BL_CODES]/* extra bits for each bit length code */\r
+ = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7};\r
+\r
+local const uch bl_order[BL_CODES]\r
+ = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15};\r
+/* The lengths of the bit length codes are sent in order of decreasing\r
+ * probability, to avoid transmitting the lengths for unused bit length codes.\r
+ */\r
+\r
+#define Buf_size (8 * 2*sizeof(char))\r
+/* Number of bits used within bi_buf. (bi_buf might be implemented on\r
+ * more than 16 bits on some systems.)\r
+ */\r
+\r
+/* ===========================================================================\r
+ * Local data. These are initialized only once.\r
+ */\r
+\r
+#define DIST_CODE_LEN 512 /* see definition of array dist_code below */\r
+\r
+#if defined(GEN_TREES_H) || !defined(STDC)\r
+/* non ANSI compilers may not accept trees.h */\r
+\r
+local ct_data static_ltree[L_CODES+2];\r
+/* The static literal tree. Since the bit lengths are imposed, there is no\r
+ * need for the L_CODES extra codes used during heap construction. However\r
+ * The codes 286 and 287 are needed to build a canonical tree (see _tr_init\r
+ * below).\r
+ */\r
+\r
+local ct_data static_dtree[D_CODES];\r
+/* The static distance tree. (Actually a trivial tree since all codes use\r
+ * 5 bits.)\r
+ */\r
+\r
+uch _dist_code[DIST_CODE_LEN];\r
+/* Distance codes. The first 256 values correspond to the distances\r
+ * 3 .. 258, the last 256 values correspond to the top 8 bits of\r
+ * the 15 bit distances.\r
+ */\r
+\r
+uch _length_code[MAX_MATCH-MIN_MATCH+1];\r
+/* length code for each normalized match length (0 == MIN_MATCH) */\r
+\r
+local int base_length[LENGTH_CODES];\r
+/* First normalized length for each code (0 = MIN_MATCH) */\r
+\r
+local int base_dist[D_CODES];\r
+/* First normalized distance for each code (0 = distance of 1) */\r
+\r
+#else\r
+# include "trees.h"\r
+#endif /* GEN_TREES_H */\r
+\r
+struct static_tree_desc_s {\r
+ const ct_data *static_tree; /* static tree or NULL */\r
+ const intf *extra_bits; /* extra bits for each code or NULL */\r
+ int extra_base; /* base index for extra_bits */\r
+ int elems; /* max number of elements in the tree */\r
+ int max_length; /* max bit length for the codes */\r
+};\r
+\r
+local static_tree_desc static_l_desc =\r
+{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS};\r
+\r
+local static_tree_desc static_d_desc =\r
+{static_dtree, extra_dbits, 0, D_CODES, MAX_BITS};\r
+\r
+local static_tree_desc static_bl_desc =\r
+{(const ct_data *)0, extra_blbits, 0, BL_CODES, MAX_BL_BITS};\r
+\r
+/* ===========================================================================\r
+ * Local (static) routines in this file.\r
+ */\r
+\r
+local void tr_static_init OF((void));\r
+local void init_block OF((deflate_state *s));\r
+local void pqdownheap OF((deflate_state *s, ct_data *tree, int k));\r
+local void gen_bitlen OF((deflate_state *s, tree_desc *desc));\r
+local void gen_codes OF((ct_data *tree, int max_code, ushf *bl_count));\r
+local void build_tree OF((deflate_state *s, tree_desc *desc));\r
+local void scan_tree OF((deflate_state *s, ct_data *tree, int max_code));\r
+local void send_tree OF((deflate_state *s, ct_data *tree, int max_code));\r
+local int build_bl_tree OF((deflate_state *s));\r
+local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes,\r
+ int blcodes));\r
+local void compress_block OF((deflate_state *s, ct_data *ltree,\r
+ ct_data *dtree));\r
+local int detect_data_type OF((deflate_state *s));\r
+local unsigned bi_reverse OF((unsigned value, int length));\r
+local void bi_windup OF((deflate_state *s));\r
+local void bi_flush OF((deflate_state *s));\r
+local void copy_block OF((deflate_state *s, charf *buf, unsigned len,\r
+ int header));\r
+\r
+#ifdef GEN_TREES_H\r
+local void gen_trees_header OF((void));\r
+#endif\r
+\r
+#ifndef DEBUG\r
+# define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len)\r
+ /* Send a code of the given tree. c and tree must not have side effects */\r
+\r
+#else /* DEBUG */\r
+# define send_code(s, c, tree) \\r
+ { if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \\r
+ send_bits(s, tree[c].Code, tree[c].Len); }\r
+#endif\r
+\r
+/* ===========================================================================\r
+ * Output a short LSB first on the stream.\r
+ * IN assertion: there is enough room in pendingBuf.\r
+ */\r
+#define put_short(s, w) { \\r
+ put_byte(s, (uch)((w) & 0xff)); \\r
+ put_byte(s, (uch)((ush)(w) >> 8)); \\r
+}\r
+\r
+/* ===========================================================================\r
+ * Send a value on a given number of bits.\r
+ * IN assertion: length <= 16 and value fits in length bits.\r
+ */\r
+#ifdef DEBUG\r
+local void send_bits OF((deflate_state *s, int value, int length));\r
+\r
+local void send_bits(s, value, length)\r
+ deflate_state *s;\r
+ int value; /* value to send */\r
+ int length; /* number of bits */\r
+{\r
+ Tracevv((stderr," l %2d v %4x ", length, value));\r
+ Assert(length > 0 && length <= 15, "invalid length");\r
+ s->bits_sent += (ulg)length;\r
+\r
+ /* If not enough room in bi_buf, use (valid) bits from bi_buf and\r
+ * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid))\r
+ * unused bits in value.\r
+ */\r
+ if (s->bi_valid > (int)Buf_size - length) {\r
+ s->bi_buf |= (ush)value << s->bi_valid;\r
+ put_short(s, s->bi_buf);\r
+ s->bi_buf = (ush)value >> (Buf_size - s->bi_valid);\r
+ s->bi_valid += length - Buf_size;\r
+ } else {\r
+ s->bi_buf |= (ush)value << s->bi_valid;\r
+ s->bi_valid += length;\r
+ }\r
+}\r
+#else /* !DEBUG */\r
+\r
+#define send_bits(s, value, length) \\r
+{ int len = length;\\r
+ if (s->bi_valid > (int)Buf_size - len) {\\r
+ int val = value;\\r
+ s->bi_buf |= (ush)val << s->bi_valid;\\r
+ put_short(s, s->bi_buf);\\r
+ s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\\r
+ s->bi_valid += len - Buf_size;\\r
+ } else {\\r
+ s->bi_buf |= (ush)(value) << s->bi_valid;\\r
+ s->bi_valid += len;\\r
+ }\\r
+}\r
+#endif /* DEBUG */\r
+\r
+\r
+/* the arguments must not have side effects */\r
+\r
+/* ===========================================================================\r
+ * Initialize the various 'constant' tables.\r
+ */\r
+local void tr_static_init()\r
+{\r
+#if defined(GEN_TREES_H) || !defined(STDC)\r
+ static int static_init_done = 0;\r
+ int n; /* iterates over tree elements */\r
+ int bits; /* bit counter */\r
+ int length; /* length value */\r
+ int code; /* code value */\r
+ int dist; /* distance index */\r
+ ush bl_count[MAX_BITS+1];\r
+ /* number of codes at each bit length for an optimal tree */\r
+\r
+ if (static_init_done) return;\r
+\r
+ /* For some embedded targets, global variables are not initialized: */\r
+#ifdef NO_INIT_GLOBAL_POINTERS\r
+ static_l_desc.static_tree = static_ltree;\r
+ static_l_desc.extra_bits = extra_lbits;\r
+ static_d_desc.static_tree = static_dtree;\r
+ static_d_desc.extra_bits = extra_dbits;\r
+ static_bl_desc.extra_bits = extra_blbits;\r
+#endif\r
+\r
+ /* Initialize the mapping length (0..255) -> length code (0..28) */\r
+ length = 0;\r
+ for (code = 0; code < LENGTH_CODES-1; code++) {\r
+ base_length[code] = length;\r
+ for (n = 0; n < (1<<extra_lbits[code]); n++) {\r
+ _length_code[length++] = (uch)code;\r
+ }\r
+ }\r
+ Assert (length == 256, "tr_static_init: length != 256");\r
+ /* Note that the length 255 (match length 258) can be represented\r
+ * in two different ways: code 284 + 5 bits or code 285, so we\r
+ * overwrite length_code[255] to use the best encoding:\r
+ */\r
+ _length_code[length-1] = (uch)code;\r
+\r
+ /* Initialize the mapping dist (0..32K) -> dist code (0..29) */\r
+ dist = 0;\r
+ for (code = 0 ; code < 16; code++) {\r
+ base_dist[code] = dist;\r
+ for (n = 0; n < (1<<extra_dbits[code]); n++) {\r
+ _dist_code[dist++] = (uch)code;\r
+ }\r
+ }\r
+ Assert (dist == 256, "tr_static_init: dist != 256");\r
+ dist >>= 7; /* from now on, all distances are divided by 128 */\r
+ for ( ; code < D_CODES; code++) {\r
+ base_dist[code] = dist << 7;\r
+ for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {\r
+ _dist_code[256 + dist++] = (uch)code;\r
+ }\r
+ }\r
+ Assert (dist == 256, "tr_static_init: 256+dist != 512");\r
+\r
+ /* Construct the codes of the static literal tree */\r
+ for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0;\r
+ n = 0;\r
+ while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++;\r
+ while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++;\r
+ while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++;\r
+ while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++;\r
+ /* Codes 286 and 287 do not exist, but we must include them in the\r
+ * tree construction to get a canonical Huffman tree (longest code\r
+ * all ones)\r
+ */\r
+ gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count);\r
+\r
+ /* The static distance tree is trivial: */\r
+ for (n = 0; n < D_CODES; n++) {\r
+ static_dtree[n].Len = 5;\r
+ static_dtree[n].Code = bi_reverse((unsigned)n, 5);\r
+ }\r
+ static_init_done = 1;\r
+\r
+# ifdef GEN_TREES_H\r
+ gen_trees_header();\r
+# endif\r
+#endif /* defined(GEN_TREES_H) || !defined(STDC) */\r
+}\r
+\r
+/* ===========================================================================\r
+ * Genererate the file trees.h describing the static trees.\r
+ */\r
+#ifdef GEN_TREES_H\r
+# ifndef DEBUG\r
+# include <stdio.h>\r
+# endif\r
+\r
+# define SEPARATOR(i, last, width) \\r
+ ((i) == (last)? "\n};\n\n" : \\r
+ ((i) % (width) == (width)-1 ? ",\n" : ", "))\r
+\r
+void gen_trees_header()\r
+{\r
+ FILE *header = fopen("trees.h", "w");\r
+ int i;\r
+\r
+ Assert (header != NULL, "Can't open trees.h");\r
+ fprintf(header,\r
+ "/* header created automatically with -DGEN_TREES_H */\n\n");\r
+\r
+ fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n");\r
+ for (i = 0; i < L_CODES+2; i++) {\r
+ fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code,\r
+ static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5));\r
+ }\r
+\r
+ fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n");\r
+ for (i = 0; i < D_CODES; i++) {\r
+ fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code,\r
+ static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));\r
+ }\r
+\r
+ fprintf(header, "const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {\n");\r
+ for (i = 0; i < DIST_CODE_LEN; i++) {\r
+ fprintf(header, "%2u%s", _dist_code[i],\r
+ SEPARATOR(i, DIST_CODE_LEN-1, 20));\r
+ }\r
+\r
+ fprintf(header,\r
+ "const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {\n");\r
+ for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) {\r
+ fprintf(header, "%2u%s", _length_code[i],\r
+ SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));\r
+ }\r
+\r
+ fprintf(header, "local const int base_length[LENGTH_CODES] = {\n");\r
+ for (i = 0; i < LENGTH_CODES; i++) {\r
+ fprintf(header, "%1u%s", base_length[i],\r
+ SEPARATOR(i, LENGTH_CODES-1, 20));\r
+ }\r
+\r
+ fprintf(header, "local const int base_dist[D_CODES] = {\n");\r
+ for (i = 0; i < D_CODES; i++) {\r
+ fprintf(header, "%5u%s", base_dist[i],\r
+ SEPARATOR(i, D_CODES-1, 10));\r
+ }\r
+\r
+ fclose(header);\r
+}\r
+#endif /* GEN_TREES_H */\r
+\r
+/* ===========================================================================\r
+ * Initialize the tree data structures for a new zlib stream.\r
+ */\r
+void ZLIB_INTERNAL _tr_init(s)\r
+ deflate_state *s;\r
+{\r
+ tr_static_init();\r
+\r
+ s->l_desc.dyn_tree = s->dyn_ltree;\r
+ s->l_desc.stat_desc = &static_l_desc;\r
+\r
+ s->d_desc.dyn_tree = s->dyn_dtree;\r
+ s->d_desc.stat_desc = &static_d_desc;\r
+\r
+ s->bl_desc.dyn_tree = s->bl_tree;\r
+ s->bl_desc.stat_desc = &static_bl_desc;\r
+\r
+ s->bi_buf = 0;\r
+ s->bi_valid = 0;\r
+ s->last_eob_len = 8; /* enough lookahead for inflate */\r
+#ifdef DEBUG\r
+ s->compressed_len = 0L;\r
+ s->bits_sent = 0L;\r
+#endif\r
+\r
+ /* Initialize the first block of the first file: */\r
+ init_block(s);\r
+}\r
+\r
+/* ===========================================================================\r
+ * Initialize a new block.\r
+ */\r
+local void init_block(s)\r
+ deflate_state *s;\r
+{\r
+ int n; /* iterates over tree elements */\r
+\r
+ /* Initialize the trees. */\r
+ for (n = 0; n < L_CODES; n++) s->dyn_ltree[n].Freq = 0;\r
+ for (n = 0; n < D_CODES; n++) s->dyn_dtree[n].Freq = 0;\r
+ for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0;\r
+\r
+ s->dyn_ltree[END_BLOCK].Freq = 1;\r
+ s->opt_len = s->static_len = 0L;\r
+ s->last_lit = s->matches = 0;\r
+}\r
+\r
+#define SMALLEST 1\r
+/* Index within the heap array of least frequent node in the Huffman tree */\r
+\r
+\r
+/* ===========================================================================\r
+ * Remove the smallest element from the heap and recreate the heap with\r
+ * one less element. Updates heap and heap_len.\r
+ */\r
+#define pqremove(s, tree, top) \\r
+{\\r
+ top = s->heap[SMALLEST]; \\r
+ s->heap[SMALLEST] = s->heap[s->heap_len--]; \\r
+ pqdownheap(s, tree, SMALLEST); \\r
+}\r
+\r
+/* ===========================================================================\r
+ * Compares to subtrees, using the tree depth as tie breaker when\r
+ * the subtrees have equal frequency. This minimizes the worst case length.\r
+ */\r
+#define smaller(tree, n, m, depth) \\r
+ (tree[n].Freq < tree[m].Freq || \\r
+ (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m]))\r
+\r
+/* ===========================================================================\r
+ * Restore the heap property by moving down the tree starting at node k,\r
+ * exchanging a node with the smallest of its two sons if necessary, stopping\r
+ * when the heap property is re-established (each father smaller than its\r
+ * two sons).\r
+ */\r
+local void pqdownheap(s, tree, k)\r
+ deflate_state *s;\r
+ ct_data *tree; /* the tree to restore */\r
+ int k; /* node to move down */\r
+{\r
+ int v = s->heap[k];\r
+ int j = k << 1; /* left son of k */\r
+ while (j <= s->heap_len) {\r
+ /* Set j to the smallest of the two sons: */\r
+ if (j < s->heap_len &&\r
+ smaller(tree, s->heap[j+1], s->heap[j], s->depth)) {\r
+ j++;\r
+ }\r
+ /* Exit if v is smaller than both sons */\r
+ if (smaller(tree, v, s->heap[j], s->depth)) break;\r
+\r
+ /* Exchange v with the smallest son */\r
+ s->heap[k] = s->heap[j]; k = j;\r
+\r
+ /* And continue down the tree, setting j to the left son of k */\r
+ j <<= 1;\r
+ }\r
+ s->heap[k] = v;\r
+}\r
+\r
+/* ===========================================================================\r
+ * Compute the optimal bit lengths for a tree and update the total bit length\r
+ * for the current block.\r
+ * IN assertion: the fields freq and dad are set, heap[heap_max] and\r
+ * above are the tree nodes sorted by increasing frequency.\r
+ * OUT assertions: the field len is set to the optimal bit length, the\r
+ * array bl_count contains the frequencies for each bit length.\r
+ * The length opt_len is updated; static_len is also updated if stree is\r
+ * not null.\r
+ */\r
+local void gen_bitlen(s, desc)\r
+ deflate_state *s;\r
+ tree_desc *desc; /* the tree descriptor */\r
+{\r
+ ct_data *tree = desc->dyn_tree;\r
+ int max_code = desc->max_code;\r
+ const ct_data *stree = desc->stat_desc->static_tree;\r
+ const intf *extra = desc->stat_desc->extra_bits;\r
+ int base = desc->stat_desc->extra_base;\r
+ int max_length = desc->stat_desc->max_length;\r
+ int h; /* heap index */\r
+ int n, m; /* iterate over the tree elements */\r
+ int bits; /* bit length */\r
+ int xbits; /* extra bits */\r
+ ush f; /* frequency */\r
+ int overflow = 0; /* number of elements with bit length too large */\r
+\r
+ for (bits = 0; bits <= MAX_BITS; bits++) s->bl_count[bits] = 0;\r
+\r
+ /* In a first pass, compute the optimal bit lengths (which may\r
+ * overflow in the case of the bit length tree).\r
+ */\r
+ tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */\r
+\r
+ for (h = s->heap_max+1; h < HEAP_SIZE; h++) {\r
+ n = s->heap[h];\r
+ bits = tree[tree[n].Dad].Len + 1;\r
+ if (bits > max_length) bits = max_length, overflow++;\r
+ tree[n].Len = (ush)bits;\r
+ /* We overwrite tree[n].Dad which is no longer needed */\r
+\r
+ if (n > max_code) continue; /* not a leaf node */\r
+\r
+ s->bl_count[bits]++;\r
+ xbits = 0;\r
+ if (n >= base) xbits = extra[n-base];\r
+ f = tree[n].Freq;\r
+ s->opt_len += (ulg)f * (bits + xbits);\r
+ if (stree) s->static_len += (ulg)f * (stree[n].Len + xbits);\r
+ }\r
+ if (overflow == 0) return;\r
+\r
+ Trace((stderr,"\nbit length overflow\n"));\r
+ /* This happens for example on obj2 and pic of the Calgary corpus */\r
+\r
+ /* Find the first bit length which could increase: */\r
+ do {\r
+ bits = max_length-1;\r
+ while (s->bl_count[bits] == 0) bits--;\r
+ s->bl_count[bits]--; /* move one leaf down the tree */\r
+ s->bl_count[bits+1] += 2; /* move one overflow item as its brother */\r
+ s->bl_count[max_length]--;\r
+ /* The brother of the overflow item also moves one step up,\r
+ * but this does not affect bl_count[max_length]\r
+ */\r
+ overflow -= 2;\r
+ } while (overflow > 0);\r
+\r
+ /* Now recompute all bit lengths, scanning in increasing frequency.\r
+ * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all\r
+ * lengths instead of fixing only the wrong ones. This idea is taken\r
+ * from 'ar' written by Haruhiko Okumura.)\r
+ */\r
+ for (bits = max_length; bits != 0; bits--) {\r
+ n = s->bl_count[bits];\r
+ while (n != 0) {\r
+ m = s->heap[--h];\r
+ if (m > max_code) continue;\r
+ if ((unsigned) tree[m].Len != (unsigned) bits) {\r
+ Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));\r
+ s->opt_len += ((long)bits - (long)tree[m].Len)\r
+ *(long)tree[m].Freq;\r
+ tree[m].Len = (ush)bits;\r
+ }\r
+ n--;\r
+ }\r
+ }\r
+}\r
+\r
+/* ===========================================================================\r
+ * Generate the codes for a given tree and bit counts (which need not be\r
+ * optimal).\r
+ * IN assertion: the array bl_count contains the bit length statistics for\r
+ * the given tree and the field len is set for all tree elements.\r
+ * OUT assertion: the field code is set for all tree elements of non\r
+ * zero code length.\r
+ */\r
+local void gen_codes (tree, max_code, bl_count)\r
+ ct_data *tree; /* the tree to decorate */\r
+ int max_code; /* largest code with non zero frequency */\r
+ ushf *bl_count; /* number of codes at each bit length */\r
+{\r
+ ush next_code[MAX_BITS+1]; /* next code value for each bit length */\r
+ ush code = 0; /* running code value */\r
+ int bits; /* bit index */\r
+ int n; /* code index */\r
+\r
+ /* The distribution counts are first used to generate the code values\r
+ * without bit reversal.\r
+ */\r
+ for (bits = 1; bits <= MAX_BITS; bits++) {\r
+ next_code[bits] = code = (code + bl_count[bits-1]) << 1;\r
+ }\r
+ /* Check that the bit counts in bl_count are consistent. The last code\r
+ * must be all ones.\r
+ */\r
+ Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,\r
+ "inconsistent bit counts");\r
+ Tracev((stderr,"\ngen_codes: max_code %d ", max_code));\r
+\r
+ for (n = 0; n <= max_code; n++) {\r
+ int len = tree[n].Len;\r
+ if (len == 0) continue;\r
+ /* Now reverse the bits */\r
+ tree[n].Code = bi_reverse(next_code[len]++, len);\r
+\r
+ Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",\r
+ n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));\r
+ }\r
+}\r
+\r
+/* ===========================================================================\r
+ * Construct one Huffman tree and assigns the code bit strings and lengths.\r
+ * Update the total bit length for the current block.\r
+ * IN assertion: the field freq is set for all tree elements.\r
+ * OUT assertions: the fields len and code are set to the optimal bit length\r
+ * and corresponding code. The length opt_len is updated; static_len is\r
+ * also updated if stree is not null. The field max_code is set.\r
+ */\r
+local void build_tree(s, desc)\r
+ deflate_state *s;\r
+ tree_desc *desc; /* the tree descriptor */\r
+{\r
+ ct_data *tree = desc->dyn_tree;\r
+ const ct_data *stree = desc->stat_desc->static_tree;\r
+ int elems = desc->stat_desc->elems;\r
+ int n, m; /* iterate over heap elements */\r
+ int max_code = -1; /* largest code with non zero frequency */\r
+ int node; /* new node being created */\r
+\r
+ /* Construct the initial heap, with least frequent element in\r
+ * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].\r
+ * heap[0] is not used.\r
+ */\r
+ s->heap_len = 0, s->heap_max = HEAP_SIZE;\r
+\r
+ for (n = 0; n < elems; n++) {\r
+ if (tree[n].Freq != 0) {\r
+ s->heap[++(s->heap_len)] = max_code = n;\r
+ s->depth[n] = 0;\r
+ } else {\r
+ tree[n].Len = 0;\r
+ }\r
+ }\r
+\r
+ /* The pkzip format requires that at least one distance code exists,\r
+ * and that at least one bit should be sent even if there is only one\r
+ * possible code. So to avoid special checks later on we force at least\r
+ * two codes of non zero frequency.\r
+ */\r
+ while (s->heap_len < 2) {\r
+ node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0);\r
+ tree[node].Freq = 1;\r
+ s->depth[node] = 0;\r
+ s->opt_len--; if (stree) s->static_len -= stree[node].Len;\r
+ /* node is 0 or 1 so it does not have extra bits */\r
+ }\r
+ desc->max_code = max_code;\r
+\r
+ /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,\r
+ * establish sub-heaps of increasing lengths:\r
+ */\r
+ for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);\r
+\r
+ /* Construct the Huffman tree by repeatedly combining the least two\r
+ * frequent nodes.\r
+ */\r
+ node = elems; /* next internal node of the tree */\r
+ do {\r
+ pqremove(s, tree, n); /* n = node of least frequency */\r
+ m = s->heap[SMALLEST]; /* m = node of next least frequency */\r
+\r
+ s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */\r
+ s->heap[--(s->heap_max)] = m;\r
+\r
+ /* Create a new node father of n and m */\r
+ tree[node].Freq = tree[n].Freq + tree[m].Freq;\r
+ s->depth[node] = (uch)((s->depth[n] >= s->depth[m] ?\r
+ s->depth[n] : s->depth[m]) + 1);\r
+ tree[n].Dad = tree[m].Dad = (ush)node;\r
+#ifdef DUMP_BL_TREE\r
+ if (tree == s->bl_tree) {\r
+ fprintf(stderr,"\nnode %d(%d), sons %d(%d) %d(%d)",\r
+ node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq);\r
+ }\r
+#endif\r
+ /* and insert the new node in the heap */\r
+ s->heap[SMALLEST] = node++;\r
+ pqdownheap(s, tree, SMALLEST);\r
+\r
+ } while (s->heap_len >= 2);\r
+\r
+ s->heap[--(s->heap_max)] = s->heap[SMALLEST];\r
+\r
+ /* At this point, the fields freq and dad are set. We can now\r
+ * generate the bit lengths.\r
+ */\r
+ gen_bitlen(s, (tree_desc *)desc);\r
+\r
+ /* The field len is now set, we can generate the bit codes */\r
+ gen_codes ((ct_data *)tree, max_code, s->bl_count);\r
+}\r
+\r
+/* ===========================================================================\r
+ * Scan a literal or distance tree to determine the frequencies of the codes\r
+ * in the bit length tree.\r
+ */\r
+local void scan_tree (s, tree, max_code)\r
+ deflate_state *s;\r
+ ct_data *tree; /* the tree to be scanned */\r
+ int max_code; /* and its largest code of non zero frequency */\r
+{\r
+ int n; /* iterates over all tree elements */\r
+ int prevlen = -1; /* last emitted length */\r
+ int curlen; /* length of current code */\r
+ int nextlen = tree[0].Len; /* length of next code */\r
+ int count = 0; /* repeat count of the current code */\r
+ int max_count = 7; /* max repeat count */\r
+ int min_count = 4; /* min repeat count */\r
+\r
+ if (nextlen == 0) max_count = 138, min_count = 3;\r
+ tree[max_code+1].Len = (ush)0xffff; /* guard */\r
+\r
+ for (n = 0; n <= max_code; n++) {\r
+ curlen = nextlen; nextlen = tree[n+1].Len;\r
+ if (++count < max_count && curlen == nextlen) {\r
+ continue;\r
+ } else if (count < min_count) {\r
+ s->bl_tree[curlen].Freq += count;\r
+ } else if (curlen != 0) {\r
+ if (curlen != prevlen) s->bl_tree[curlen].Freq++;\r
+ s->bl_tree[REP_3_6].Freq++;\r
+ } else if (count <= 10) {\r
+ s->bl_tree[REPZ_3_10].Freq++;\r
+ } else {\r
+ s->bl_tree[REPZ_11_138].Freq++;\r
+ }\r
+ count = 0; prevlen = curlen;\r
+ if (nextlen == 0) {\r
+ max_count = 138, min_count = 3;\r
+ } else if (curlen == nextlen) {\r
+ max_count = 6, min_count = 3;\r
+ } else {\r
+ max_count = 7, min_count = 4;\r
+ }\r
+ }\r
+}\r
+\r
+/* ===========================================================================\r
+ * Send a literal or distance tree in compressed form, using the codes in\r
+ * bl_tree.\r
+ */\r
+local void send_tree (s, tree, max_code)\r
+ deflate_state *s;\r
+ ct_data *tree; /* the tree to be scanned */\r
+ int max_code; /* and its largest code of non zero frequency */\r
+{\r
+ int n; /* iterates over all tree elements */\r
+ int prevlen = -1; /* last emitted length */\r
+ int curlen; /* length of current code */\r
+ int nextlen = tree[0].Len; /* length of next code */\r
+ int count = 0; /* repeat count of the current code */\r
+ int max_count = 7; /* max repeat count */\r
+ int min_count = 4; /* min repeat count */\r
+\r
+ /* tree[max_code+1].Len = -1; */ /* guard already set */\r
+ if (nextlen == 0) max_count = 138, min_count = 3;\r
+\r
+ for (n = 0; n <= max_code; n++) {\r
+ curlen = nextlen; nextlen = tree[n+1].Len;\r
+ if (++count < max_count && curlen == nextlen) {\r
+ continue;\r
+ } else if (count < min_count) {\r
+ do { send_code(s, curlen, s->bl_tree); } while (--count != 0);\r
+\r
+ } else if (curlen != 0) {\r
+ if (curlen != prevlen) {\r
+ send_code(s, curlen, s->bl_tree); count--;\r
+ }\r
+ Assert(count >= 3 && count <= 6, " 3_6?");\r
+ send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2);\r
+\r
+ } else if (count <= 10) {\r
+ send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3);\r
+\r
+ } else {\r
+ send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7);\r
+ }\r
+ count = 0; prevlen = curlen;\r
+ if (nextlen == 0) {\r
+ max_count = 138, min_count = 3;\r
+ } else if (curlen == nextlen) {\r
+ max_count = 6, min_count = 3;\r
+ } else {\r
+ max_count = 7, min_count = 4;\r
+ }\r
+ }\r
+}\r
+\r
+/* ===========================================================================\r
+ * Construct the Huffman tree for the bit lengths and return the index in\r
+ * bl_order of the last bit length code to send.\r
+ */\r
+local int build_bl_tree(s)\r
+ deflate_state *s;\r
+{\r
+ int max_blindex; /* index of last bit length code of non zero freq */\r
+\r
+ /* Determine the bit length frequencies for literal and distance trees */\r
+ scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code);\r
+ scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code);\r
+\r
+ /* Build the bit length tree: */\r
+ build_tree(s, (tree_desc *)(&(s->bl_desc)));\r
+ /* opt_len now includes the length of the tree representations, except\r
+ * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.\r
+ */\r
+\r
+ /* Determine the number of bit length codes to send. The pkzip format\r
+ * requires that at least 4 bit length codes be sent. (appnote.txt says\r
+ * 3 but the actual value used is 4.)\r
+ */\r
+ for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {\r
+ if (s->bl_tree[bl_order[max_blindex]].Len != 0) break;\r
+ }\r
+ /* Update opt_len to include the bit length tree and counts */\r
+ s->opt_len += 3*(max_blindex+1) + 5+5+4;\r
+ Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",\r
+ s->opt_len, s->static_len));\r
+\r
+ return max_blindex;\r
+}\r
+\r
+/* ===========================================================================\r
+ * Send the header for a block using dynamic Huffman trees: the counts, the\r
+ * lengths of the bit length codes, the literal tree and the distance tree.\r
+ * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.\r
+ */\r
+local void send_all_trees(s, lcodes, dcodes, blcodes)\r
+ deflate_state *s;\r
+ int lcodes, dcodes, blcodes; /* number of codes for each tree */\r
+{\r
+ int rank; /* index in bl_order */\r
+\r
+ Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");\r
+ Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,\r
+ "too many codes");\r
+ Tracev((stderr, "\nbl counts: "));\r
+ send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */\r
+ send_bits(s, dcodes-1, 5);\r
+ send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */\r
+ for (rank = 0; rank < blcodes; rank++) {\r
+ Tracev((stderr, "\nbl code %2d ", bl_order[rank]));\r
+ send_bits(s, s->bl_tree[bl_order[rank]].Len, 3);\r
+ }\r
+ Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));\r
+\r
+ send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */\r
+ Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));\r
+\r
+ send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */\r
+ Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));\r
+}\r
+\r
+/* ===========================================================================\r
+ * Send a stored block\r
+ */\r
+void ZLIB_INTERNAL _tr_stored_block(s, buf, stored_len, last)\r
+ deflate_state *s;\r
+ charf *buf; /* input block */\r
+ ulg stored_len; /* length of input block */\r
+ int last; /* one if this is the last block for a file */\r
+{\r
+ send_bits(s, (STORED_BLOCK<<1)+last, 3); /* send block type */\r
+#ifdef DEBUG\r
+ s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L;\r
+ s->compressed_len += (stored_len + 4) << 3;\r
+#endif\r
+ copy_block(s, buf, (unsigned)stored_len, 1); /* with header */\r
+}\r
+\r
+/* ===========================================================================\r
+ * Send one empty static block to give enough lookahead for inflate.\r
+ * This takes 10 bits, of which 7 may remain in the bit buffer.\r
+ * The current inflate code requires 9 bits of lookahead. If the\r
+ * last two codes for the previous block (real code plus EOB) were coded\r
+ * on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode\r
+ * the last real code. In this case we send two empty static blocks instead\r
+ * of one. (There are no problems if the previous block is stored or fixed.)\r
+ * To simplify the code, we assume the worst case of last real code encoded\r
+ * on one bit only.\r
+ */\r
+void ZLIB_INTERNAL _tr_align(s)\r
+ deflate_state *s;\r
+{\r
+ send_bits(s, STATIC_TREES<<1, 3);\r
+ send_code(s, END_BLOCK, static_ltree);\r
+#ifdef DEBUG\r
+ s->compressed_len += 10L; /* 3 for block type, 7 for EOB */\r
+#endif\r
+ bi_flush(s);\r
+ /* Of the 10 bits for the empty block, we have already sent\r
+ * (10 - bi_valid) bits. The lookahead for the last real code (before\r
+ * the EOB of the previous block) was thus at least one plus the length\r
+ * of the EOB plus what we have just sent of the empty static block.\r
+ */\r
+ if (1 + s->last_eob_len + 10 - s->bi_valid < 9) {\r
+ send_bits(s, STATIC_TREES<<1, 3);\r
+ send_code(s, END_BLOCK, static_ltree);\r
+#ifdef DEBUG\r
+ s->compressed_len += 10L;\r
+#endif\r
+ bi_flush(s);\r
+ }\r
+ s->last_eob_len = 7;\r
+}\r
+\r
+/* ===========================================================================\r
+ * Determine the best encoding for the current block: dynamic trees, static\r
+ * trees or store, and output the encoded block to the zip file.\r
+ */\r
+void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last)\r
+ deflate_state *s;\r
+ charf *buf; /* input block, or NULL if too old */\r
+ ulg stored_len; /* length of input block */\r
+ int last; /* one if this is the last block for a file */\r
+{\r
+ ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */\r
+ int max_blindex = 0; /* index of last bit length code of non zero freq */\r
+\r
+ /* Build the Huffman trees unless a stored block is forced */\r
+ if (s->level > 0) {\r
+\r
+ /* Check if the file is binary or text */\r
+ if (s->strm->data_type == Z_UNKNOWN)\r
+ s->strm->data_type = detect_data_type(s);\r
+\r
+ /* Construct the literal and distance trees */\r
+ build_tree(s, (tree_desc *)(&(s->l_desc)));\r
+ Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,\r
+ s->static_len));\r
+\r
+ build_tree(s, (tree_desc *)(&(s->d_desc)));\r
+ Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,\r
+ s->static_len));\r
+ /* At this point, opt_len and static_len are the total bit lengths of\r
+ * the compressed block data, excluding the tree representations.\r
+ */\r
+\r
+ /* Build the bit length tree for the above two trees, and get the index\r
+ * in bl_order of the last bit length code to send.\r
+ */\r
+ max_blindex = build_bl_tree(s);\r
+\r
+ /* Determine the best encoding. Compute the block lengths in bytes. */\r
+ opt_lenb = (s->opt_len+3+7)>>3;\r
+ static_lenb = (s->static_len+3+7)>>3;\r
+\r
+ Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",\r
+ opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,\r
+ s->last_lit));\r
+\r
+ if (static_lenb <= opt_lenb) opt_lenb = static_lenb;\r
+\r
+ } else {\r
+ Assert(buf != (char*)0, "lost buf");\r
+ opt_lenb = static_lenb = stored_len + 5; /* force a stored block */\r
+ }\r
+\r
+#ifdef FORCE_STORED\r
+ if (buf != (char*)0) { /* force stored block */\r
+#else\r
+ if (stored_len+4 <= opt_lenb && buf != (char*)0) {\r
+ /* 4: two words for the lengths */\r
+#endif\r
+ /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.\r
+ * Otherwise we can't have processed more than WSIZE input bytes since\r
+ * the last block flush, because compression would have been\r
+ * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to\r
+ * transform a block into a stored block.\r
+ */\r
+ _tr_stored_block(s, buf, stored_len, last);\r
+\r
+#ifdef FORCE_STATIC\r
+ } else if (static_lenb >= 0) { /* force static trees */\r
+#else\r
+ } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) {\r
+#endif\r
+ send_bits(s, (STATIC_TREES<<1)+last, 3);\r
+ compress_block(s, (ct_data *)static_ltree, (ct_data *)static_dtree);\r
+#ifdef DEBUG\r
+ s->compressed_len += 3 + s->static_len;\r
+#endif\r
+ } else {\r
+ send_bits(s, (DYN_TREES<<1)+last, 3);\r
+ send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1,\r
+ max_blindex+1);\r
+ compress_block(s, (ct_data *)s->dyn_ltree, (ct_data *)s->dyn_dtree);\r
+#ifdef DEBUG\r
+ s->compressed_len += 3 + s->opt_len;\r
+#endif\r
+ }\r
+ Assert (s->compressed_len == s->bits_sent, "bad compressed size");\r
+ /* The above check is made mod 2^32, for files larger than 512 MB\r
+ * and uLong implemented on 32 bits.\r
+ */\r
+ init_block(s);\r
+\r
+ if (last) {\r
+ bi_windup(s);\r
+#ifdef DEBUG\r
+ s->compressed_len += 7; /* align on byte boundary */\r
+#endif\r
+ }\r
+ Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,\r
+ s->compressed_len-7*last));\r
+}\r
+\r
+/* ===========================================================================\r
+ * Save the match info and tally the frequency counts. Return true if\r
+ * the current block must be flushed.\r
+ */\r
+int ZLIB_INTERNAL _tr_tally (s, dist, lc)\r
+ deflate_state *s;\r
+ unsigned dist; /* distance of matched string */\r
+ unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */\r
+{\r
+ s->d_buf[s->last_lit] = (ush)dist;\r
+ s->l_buf[s->last_lit++] = (uch)lc;\r
+ if (dist == 0) {\r
+ /* lc is the unmatched char */\r
+ s->dyn_ltree[lc].Freq++;\r
+ } else {\r
+ s->matches++;\r
+ /* Here, lc is the match length - MIN_MATCH */\r
+ dist--; /* dist = match distance - 1 */\r
+ Assert((ush)dist < (ush)MAX_DIST(s) &&\r
+ (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&\r
+ (ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match");\r
+\r
+ s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++;\r
+ s->dyn_dtree[d_code(dist)].Freq++;\r
+ }\r
+\r
+#ifdef TRUNCATE_BLOCK\r
+ /* Try to guess if it is profitable to stop the current block here */\r
+ if ((s->last_lit & 0x1fff) == 0 && s->level > 2) {\r
+ /* Compute an upper bound for the compressed length */\r
+ ulg out_length = (ulg)s->last_lit*8L;\r
+ ulg in_length = (ulg)((long)s->strstart - s->block_start);\r
+ int dcode;\r
+ for (dcode = 0; dcode < D_CODES; dcode++) {\r
+ out_length += (ulg)s->dyn_dtree[dcode].Freq *\r
+ (5L+extra_dbits[dcode]);\r
+ }\r
+ out_length >>= 3;\r
+ Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",\r
+ s->last_lit, in_length, out_length,\r
+ 100L - out_length*100L/in_length));\r
+ if (s->matches < s->last_lit/2 && out_length < in_length/2) return 1;\r
+ }\r
+#endif\r
+ return (s->last_lit == s->lit_bufsize-1);\r
+ /* We avoid equality with lit_bufsize because of wraparound at 64K\r
+ * on 16 bit machines and because stored blocks are restricted to\r
+ * 64K-1 bytes.\r
+ */\r
+}\r
+\r
+/* ===========================================================================\r
+ * Send the block data compressed using the given Huffman trees\r
+ */\r
+local void compress_block(s, ltree, dtree)\r
+ deflate_state *s;\r
+ ct_data *ltree; /* literal tree */\r
+ ct_data *dtree; /* distance tree */\r
+{\r
+ unsigned dist; /* distance of matched string */\r
+ int lc; /* match length or unmatched char (if dist == 0) */\r
+ unsigned lx = 0; /* running index in l_buf */\r
+ unsigned code; /* the code to send */\r
+ int extra; /* number of extra bits to send */\r
+\r
+ if (s->last_lit != 0) do {\r
+ dist = s->d_buf[lx];\r
+ lc = s->l_buf[lx++];\r
+ if (dist == 0) {\r
+ send_code(s, lc, ltree); /* send a literal byte */\r
+ Tracecv(isgraph(lc), (stderr," '%c' ", lc));\r
+ } else {\r
+ /* Here, lc is the match length - MIN_MATCH */\r
+ code = _length_code[lc];\r
+ send_code(s, code+LITERALS+1, ltree); /* send the length code */\r
+ extra = extra_lbits[code];\r
+ if (extra != 0) {\r
+ lc -= base_length[code];\r
+ send_bits(s, lc, extra); /* send the extra length bits */\r
+ }\r
+ dist--; /* dist is now the match distance - 1 */\r
+ code = d_code(dist);\r
+ Assert (code < D_CODES, "bad d_code");\r
+\r
+ send_code(s, code, dtree); /* send the distance code */\r
+ extra = extra_dbits[code];\r
+ if (extra != 0) {\r
+ dist -= base_dist[code];\r
+ send_bits(s, dist, extra); /* send the extra distance bits */\r
+ }\r
+ } /* literal or match pair ? */\r
+\r
+ /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */\r
+ Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,\r
+ "pendingBuf overflow");\r
+\r
+ } while (lx < s->last_lit);\r
+\r
+ send_code(s, END_BLOCK, ltree);\r
+ s->last_eob_len = ltree[END_BLOCK].Len;\r
+}\r
+\r
+/* ===========================================================================\r
+ * Check if the data type is TEXT or BINARY, using the following algorithm:\r
+ * - TEXT if the two conditions below are satisfied:\r
+ * a) There are no non-portable control characters belonging to the\r
+ * "black list" (0..6, 14..25, 28..31).\r
+ * b) There is at least one printable character belonging to the\r
+ * "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).\r
+ * - BINARY otherwise.\r
+ * - The following partially-portable control characters form a\r
+ * "gray list" that is ignored in this detection algorithm:\r
+ * (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).\r
+ * IN assertion: the fields Freq of dyn_ltree are set.\r
+ */\r
+local int detect_data_type(s)\r
+ deflate_state *s;\r
+{\r
+ /* black_mask is the bit mask of black-listed bytes\r
+ * set bits 0..6, 14..25, and 28..31\r
+ * 0xf3ffc07f = binary 11110011111111111100000001111111\r
+ */\r
+ unsigned long black_mask = 0xf3ffc07fUL;\r
+ int n;\r
+\r
+ /* Check for non-textual ("black-listed") bytes. */\r
+ for (n = 0; n <= 31; n++, black_mask >>= 1)\r
+ if ((black_mask & 1) && (s->dyn_ltree[n].Freq != 0))\r
+ return Z_BINARY;\r
+\r
+ /* Check for textual ("white-listed") bytes. */\r
+ if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0\r
+ || s->dyn_ltree[13].Freq != 0)\r
+ return Z_TEXT;\r
+ for (n = 32; n < LITERALS; n++)\r
+ if (s->dyn_ltree[n].Freq != 0)\r
+ return Z_TEXT;\r
+\r
+ /* There are no "black-listed" or "white-listed" bytes:\r
+ * this stream either is empty or has tolerated ("gray-listed") bytes only.\r
+ */\r
+ return Z_BINARY;\r
+}\r
+\r
+/* ===========================================================================\r
+ * Reverse the first len bits of a code, using straightforward code (a faster\r
+ * method would use a table)\r
+ * IN assertion: 1 <= len <= 15\r
+ */\r
+local unsigned bi_reverse(code, len)\r
+ unsigned code; /* the value to invert */\r
+ int len; /* its bit length */\r
+{\r
+ register unsigned res = 0;\r
+ do {\r
+ res |= code & 1;\r
+ code >>= 1, res <<= 1;\r
+ } while (--len > 0);\r
+ return res >> 1;\r
+}\r
+\r
+/* ===========================================================================\r
+ * Flush the bit buffer, keeping at most 7 bits in it.\r
+ */\r
+local void bi_flush(s)\r
+ deflate_state *s;\r
+{\r
+ if (s->bi_valid == 16) {\r
+ put_short(s, s->bi_buf);\r
+ s->bi_buf = 0;\r
+ s->bi_valid = 0;\r
+ } else if (s->bi_valid >= 8) {\r
+ put_byte(s, (Byte)s->bi_buf);\r
+ s->bi_buf >>= 8;\r
+ s->bi_valid -= 8;\r
+ }\r
+}\r
+\r
+/* ===========================================================================\r
+ * Flush the bit buffer and align the output on a byte boundary\r
+ */\r
+local void bi_windup(s)\r
+ deflate_state *s;\r
+{\r
+ if (s->bi_valid > 8) {\r
+ put_short(s, s->bi_buf);\r
+ } else if (s->bi_valid > 0) {\r
+ put_byte(s, (Byte)s->bi_buf);\r
+ }\r
+ s->bi_buf = 0;\r
+ s->bi_valid = 0;\r
+#ifdef DEBUG\r
+ s->bits_sent = (s->bits_sent+7) & ~7;\r
+#endif\r
+}\r
+\r
+/* ===========================================================================\r
+ * Copy a stored block, storing first the length and its\r
+ * one's complement if requested.\r
+ */\r
+local void copy_block(s, buf, len, header)\r
+ deflate_state *s;\r
+ charf *buf; /* the input data */\r
+ unsigned len; /* its length */\r
+ int header; /* true if block header must be written */\r
+{\r
+ bi_windup(s); /* align on byte boundary */\r
+ s->last_eob_len = 8; /* enough lookahead for inflate */\r
+\r
+ if (header) {\r
+ put_short(s, (ush)len);\r
+ put_short(s, (ush)~len);\r
+#ifdef DEBUG\r
+ s->bits_sent += 2*16;\r
+#endif\r
+ }\r
+#ifdef DEBUG\r
+ s->bits_sent += (ulg)len<<3;\r
+#endif\r
+ while (len--) {\r
+ put_byte(s, *buf++);\r
+ }\r
+}\r
--- /dev/null
+/* header created automatically with -DGEN_TREES_H */\r
+\r
+local const ct_data static_ltree[L_CODES+2] = {\r
+{{ 12},{ 8}}, {{140},{ 8}}, {{ 76},{ 8}}, {{204},{ 8}}, {{ 44},{ 8}},\r
+{{172},{ 8}}, {{108},{ 8}}, {{236},{ 8}}, {{ 28},{ 8}}, {{156},{ 8}},\r
+{{ 92},{ 8}}, {{220},{ 8}}, {{ 60},{ 8}}, {{188},{ 8}}, {{124},{ 8}},\r
+{{252},{ 8}}, {{ 2},{ 8}}, {{130},{ 8}}, {{ 66},{ 8}}, {{194},{ 8}},\r
+{{ 34},{ 8}}, {{162},{ 8}}, {{ 98},{ 8}}, {{226},{ 8}}, {{ 18},{ 8}},\r
+{{146},{ 8}}, {{ 82},{ 8}}, {{210},{ 8}}, {{ 50},{ 8}}, {{178},{ 8}},\r
+{{114},{ 8}}, {{242},{ 8}}, {{ 10},{ 8}}, {{138},{ 8}}, {{ 74},{ 8}},\r
+{{202},{ 8}}, {{ 42},{ 8}}, {{170},{ 8}}, {{106},{ 8}}, {{234},{ 8}},\r
+{{ 26},{ 8}}, {{154},{ 8}}, {{ 90},{ 8}}, {{218},{ 8}}, {{ 58},{ 8}},\r
+{{186},{ 8}}, {{122},{ 8}}, {{250},{ 8}}, {{ 6},{ 8}}, {{134},{ 8}},\r
+{{ 70},{ 8}}, {{198},{ 8}}, {{ 38},{ 8}}, {{166},{ 8}}, {{102},{ 8}},\r
+{{230},{ 8}}, {{ 22},{ 8}}, {{150},{ 8}}, {{ 86},{ 8}}, {{214},{ 8}},\r
+{{ 54},{ 8}}, {{182},{ 8}}, {{118},{ 8}}, {{246},{ 8}}, {{ 14},{ 8}},\r
+{{142},{ 8}}, {{ 78},{ 8}}, {{206},{ 8}}, {{ 46},{ 8}}, {{174},{ 8}},\r
+{{110},{ 8}}, {{238},{ 8}}, {{ 30},{ 8}}, {{158},{ 8}}, {{ 94},{ 8}},\r
+{{222},{ 8}}, {{ 62},{ 8}}, {{190},{ 8}}, {{126},{ 8}}, {{254},{ 8}},\r
+{{ 1},{ 8}}, {{129},{ 8}}, {{ 65},{ 8}}, {{193},{ 8}}, {{ 33},{ 8}},\r
+{{161},{ 8}}, {{ 97},{ 8}}, {{225},{ 8}}, {{ 17},{ 8}}, {{145},{ 8}},\r
+{{ 81},{ 8}}, {{209},{ 8}}, {{ 49},{ 8}}, {{177},{ 8}}, {{113},{ 8}},\r
+{{241},{ 8}}, {{ 9},{ 8}}, {{137},{ 8}}, {{ 73},{ 8}}, {{201},{ 8}},\r
+{{ 41},{ 8}}, {{169},{ 8}}, {{105},{ 8}}, {{233},{ 8}}, {{ 25},{ 8}},\r
+{{153},{ 8}}, {{ 89},{ 8}}, {{217},{ 8}}, {{ 57},{ 8}}, {{185},{ 8}},\r
+{{121},{ 8}}, {{249},{ 8}}, {{ 5},{ 8}}, {{133},{ 8}}, {{ 69},{ 8}},\r
+{{197},{ 8}}, {{ 37},{ 8}}, {{165},{ 8}}, {{101},{ 8}}, {{229},{ 8}},\r
+{{ 21},{ 8}}, {{149},{ 8}}, {{ 85},{ 8}}, {{213},{ 8}}, {{ 53},{ 8}},\r
+{{181},{ 8}}, {{117},{ 8}}, {{245},{ 8}}, {{ 13},{ 8}}, {{141},{ 8}},\r
+{{ 77},{ 8}}, {{205},{ 8}}, {{ 45},{ 8}}, {{173},{ 8}}, {{109},{ 8}},\r
+{{237},{ 8}}, {{ 29},{ 8}}, {{157},{ 8}}, {{ 93},{ 8}}, {{221},{ 8}},\r
+{{ 61},{ 8}}, {{189},{ 8}}, {{125},{ 8}}, {{253},{ 8}}, {{ 19},{ 9}},\r
+{{275},{ 9}}, {{147},{ 9}}, {{403},{ 9}}, {{ 83},{ 9}}, {{339},{ 9}},\r
+{{211},{ 9}}, {{467},{ 9}}, {{ 51},{ 9}}, {{307},{ 9}}, {{179},{ 9}},\r
+{{435},{ 9}}, {{115},{ 9}}, {{371},{ 9}}, {{243},{ 9}}, {{499},{ 9}},\r
+{{ 11},{ 9}}, {{267},{ 9}}, {{139},{ 9}}, {{395},{ 9}}, {{ 75},{ 9}},\r
+{{331},{ 9}}, {{203},{ 9}}, {{459},{ 9}}, {{ 43},{ 9}}, {{299},{ 9}},\r
+{{171},{ 9}}, {{427},{ 9}}, {{107},{ 9}}, {{363},{ 9}}, {{235},{ 9}},\r
+{{491},{ 9}}, {{ 27},{ 9}}, {{283},{ 9}}, {{155},{ 9}}, {{411},{ 9}},\r
+{{ 91},{ 9}}, {{347},{ 9}}, {{219},{ 9}}, {{475},{ 9}}, {{ 59},{ 9}},\r
+{{315},{ 9}}, {{187},{ 9}}, {{443},{ 9}}, {{123},{ 9}}, {{379},{ 9}},\r
+{{251},{ 9}}, {{507},{ 9}}, {{ 7},{ 9}}, {{263},{ 9}}, {{135},{ 9}},\r
+{{391},{ 9}}, {{ 71},{ 9}}, {{327},{ 9}}, {{199},{ 9}}, {{455},{ 9}},\r
+{{ 39},{ 9}}, {{295},{ 9}}, {{167},{ 9}}, {{423},{ 9}}, {{103},{ 9}},\r
+{{359},{ 9}}, {{231},{ 9}}, {{487},{ 9}}, {{ 23},{ 9}}, {{279},{ 9}},\r
+{{151},{ 9}}, {{407},{ 9}}, {{ 87},{ 9}}, {{343},{ 9}}, {{215},{ 9}},\r
+{{471},{ 9}}, {{ 55},{ 9}}, {{311},{ 9}}, {{183},{ 9}}, {{439},{ 9}},\r
+{{119},{ 9}}, {{375},{ 9}}, {{247},{ 9}}, {{503},{ 9}}, {{ 15},{ 9}},\r
+{{271},{ 9}}, {{143},{ 9}}, {{399},{ 9}}, {{ 79},{ 9}}, {{335},{ 9}},\r
+{{207},{ 9}}, {{463},{ 9}}, {{ 47},{ 9}}, {{303},{ 9}}, {{175},{ 9}},\r
+{{431},{ 9}}, {{111},{ 9}}, {{367},{ 9}}, {{239},{ 9}}, {{495},{ 9}},\r
+{{ 31},{ 9}}, {{287},{ 9}}, {{159},{ 9}}, {{415},{ 9}}, {{ 95},{ 9}},\r
+{{351},{ 9}}, {{223},{ 9}}, {{479},{ 9}}, {{ 63},{ 9}}, {{319},{ 9}},\r
+{{191},{ 9}}, {{447},{ 9}}, {{127},{ 9}}, {{383},{ 9}}, {{255},{ 9}},\r
+{{511},{ 9}}, {{ 0},{ 7}}, {{ 64},{ 7}}, {{ 32},{ 7}}, {{ 96},{ 7}},\r
+{{ 16},{ 7}}, {{ 80},{ 7}}, {{ 48},{ 7}}, {{112},{ 7}}, {{ 8},{ 7}},\r
+{{ 72},{ 7}}, {{ 40},{ 7}}, {{104},{ 7}}, {{ 24},{ 7}}, {{ 88},{ 7}},\r
+{{ 56},{ 7}}, {{120},{ 7}}, {{ 4},{ 7}}, {{ 68},{ 7}}, {{ 36},{ 7}},\r
+{{100},{ 7}}, {{ 20},{ 7}}, {{ 84},{ 7}}, {{ 52},{ 7}}, {{116},{ 7}},\r
+{{ 3},{ 8}}, {{131},{ 8}}, {{ 67},{ 8}}, {{195},{ 8}}, {{ 35},{ 8}},\r
+{{163},{ 8}}, {{ 99},{ 8}}, {{227},{ 8}}\r
+};\r
+\r
+local const ct_data static_dtree[D_CODES] = {\r
+{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}},\r
+{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}},\r
+{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}},\r
+{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}},\r
+{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}},\r
+{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}}\r
+};\r
+\r
+const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {\r
+ 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8,\r
+ 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10,\r
+10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\r
+11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,\r
+12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,\r
+13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,\r
+13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,\r
+14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,\r
+14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,\r
+14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,\r
+15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,\r
+15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,\r
+15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 16, 17,\r
+18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,\r
+23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\r
+24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,\r
+26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,\r
+26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,\r
+27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,\r
+27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\r
+28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\r
+28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\r
+28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,\r
+29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,\r
+29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,\r
+29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29\r
+};\r
+\r
+const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {\r
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12,\r
+13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,\r
+17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,\r
+19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,\r
+21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,\r
+22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,\r
+23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\r
+24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\r
+25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,\r
+25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26,\r
+26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,\r
+26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,\r
+27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28\r
+};\r
+\r
+local const int base_length[LENGTH_CODES] = {\r
+0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,\r
+64, 80, 96, 112, 128, 160, 192, 224, 0\r
+};\r
+\r
+local const int base_dist[D_CODES] = {\r
+ 0, 1, 2, 3, 4, 6, 8, 12, 16, 24,\r
+ 32, 48, 64, 96, 128, 192, 256, 384, 512, 768,\r
+ 1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576\r
+};\r
+\r
--- /dev/null
+/* uncompr.c -- decompress a memory buffer\r
+ * Copyright (C) 1995-2003, 2010 Jean-loup Gailly.\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+#define ZLIB_INTERNAL\r
+#include "zlib.h"\r
+\r
+/* ===========================================================================\r
+ Decompresses the source buffer into the destination buffer. sourceLen is\r
+ the byte length of the source buffer. Upon entry, destLen is the total\r
+ size of the destination buffer, which must be large enough to hold the\r
+ entire uncompressed data. (The size of the uncompressed data must have\r
+ been saved previously by the compressor and transmitted to the decompressor\r
+ by some mechanism outside the scope of this compression library.)\r
+ Upon exit, destLen is the actual size of the compressed buffer.\r
+\r
+ uncompress returns Z_OK if success, Z_MEM_ERROR if there was not\r
+ enough memory, Z_BUF_ERROR if there was not enough room in the output\r
+ buffer, or Z_DATA_ERROR if the input data was corrupted.\r
+*/\r
+int ZEXPORT uncompress (dest, destLen, source, sourceLen)\r
+ Bytef *dest;\r
+ uLongf *destLen;\r
+ const Bytef *source;\r
+ uLong sourceLen;\r
+{\r
+ z_stream stream;\r
+ int err;\r
+\r
+ stream.next_in = (Bytef*)source;\r
+ stream.avail_in = (uInt)sourceLen;\r
+ /* Check for source > 64K on 16-bit machine: */\r
+ if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;\r
+\r
+ stream.next_out = dest;\r
+ stream.avail_out = (uInt)*destLen;\r
+ if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;\r
+\r
+ stream.zalloc = (alloc_func)0;\r
+ stream.zfree = (free_func)0;\r
+\r
+ err = inflateInit(&stream);\r
+ if (err != Z_OK) return err;\r
+\r
+ err = inflate(&stream, Z_FINISH);\r
+ if (err != Z_STREAM_END) {\r
+ inflateEnd(&stream);\r
+ if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))\r
+ return Z_DATA_ERROR;\r
+ return err;\r
+ }\r
+ *destLen = stream.total_out;\r
+\r
+ err = inflateEnd(&stream);\r
+ return err;\r
+}\r
--- /dev/null
+/* zconf.h -- configuration of the zlib compression library\r
+ * Copyright (C) 1995-2010 Jean-loup Gailly.\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+#ifndef ZCONF_H\r
+#define ZCONF_H\r
+\r
+/*\r
+ * If you *really* need a unique prefix for all types and library functions,\r
+ * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.\r
+ * Even better than compiling with -DZ_PREFIX would be to use configure to set\r
+ * this permanently in zconf.h using "./configure --zprefix".\r
+ */\r
+#ifdef Z_PREFIX /* may be set to #if 1 by ./configure */\r
+\r
+/* all linked symbols */\r
+# define _dist_code z__dist_code\r
+# define _length_code z__length_code\r
+# define _tr_align z__tr_align\r
+# define _tr_flush_block z__tr_flush_block\r
+# define _tr_init z__tr_init\r
+# define _tr_stored_block z__tr_stored_block\r
+# define _tr_tally z__tr_tally\r
+# define adler32 z_adler32\r
+# define adler32_combine z_adler32_combine\r
+# define adler32_combine64 z_adler32_combine64\r
+# define compress z_compress\r
+# define compress2 z_compress2\r
+# define compressBound z_compressBound\r
+# define crc32 z_crc32\r
+# define crc32_combine z_crc32_combine\r
+# define crc32_combine64 z_crc32_combine64\r
+# define deflate z_deflate\r
+# define deflateBound z_deflateBound\r
+# define deflateCopy z_deflateCopy\r
+# define deflateEnd z_deflateEnd\r
+# define deflateInit2_ z_deflateInit2_\r
+# define deflateInit_ z_deflateInit_\r
+# define deflateParams z_deflateParams\r
+# define deflatePrime z_deflatePrime\r
+# define deflateReset z_deflateReset\r
+# define deflateSetDictionary z_deflateSetDictionary\r
+# define deflateSetHeader z_deflateSetHeader\r
+# define deflateTune z_deflateTune\r
+# define deflate_copyright z_deflate_copyright\r
+# define get_crc_table z_get_crc_table\r
+# define gz_error z_gz_error\r
+# define gz_intmax z_gz_intmax\r
+# define gz_strwinerror z_gz_strwinerror\r
+# define gzbuffer z_gzbuffer\r
+# define gzclearerr z_gzclearerr\r
+# define gzclose z_gzclose\r
+# define gzclose_r z_gzclose_r\r
+# define gzclose_w z_gzclose_w\r
+# define gzdirect z_gzdirect\r
+# define gzdopen z_gzdopen\r
+# define gzeof z_gzeof\r
+# define gzerror z_gzerror\r
+# define gzflush z_gzflush\r
+# define gzgetc z_gzgetc\r
+# define gzgets z_gzgets\r
+# define gzoffset z_gzoffset\r
+# define gzoffset64 z_gzoffset64\r
+# define gzopen z_gzopen\r
+# define gzopen64 z_gzopen64\r
+# define gzprintf z_gzprintf\r
+# define gzputc z_gzputc\r
+# define gzputs z_gzputs\r
+# define gzread z_gzread\r
+# define gzrewind z_gzrewind\r
+# define gzseek z_gzseek\r
+# define gzseek64 z_gzseek64\r
+# define gzsetparams z_gzsetparams\r
+# define gztell z_gztell\r
+# define gztell64 z_gztell64\r
+# define gzungetc z_gzungetc\r
+# define gzwrite z_gzwrite\r
+# define inflate z_inflate\r
+# define inflateBack z_inflateBack\r
+# define inflateBackEnd z_inflateBackEnd\r
+# define inflateBackInit_ z_inflateBackInit_\r
+# define inflateCopy z_inflateCopy\r
+# define inflateEnd z_inflateEnd\r
+# define inflateGetHeader z_inflateGetHeader\r
+# define inflateInit2_ z_inflateInit2_\r
+# define inflateInit_ z_inflateInit_\r
+# define inflateMark z_inflateMark\r
+# define inflatePrime z_inflatePrime\r
+# define inflateReset z_inflateReset\r
+# define inflateReset2 z_inflateReset2\r
+# define inflateSetDictionary z_inflateSetDictionary\r
+# define inflateSync z_inflateSync\r
+# define inflateSyncPoint z_inflateSyncPoint\r
+# define inflateUndermine z_inflateUndermine\r
+# define inflate_copyright z_inflate_copyright\r
+# define inflate_fast z_inflate_fast\r
+# define inflate_table z_inflate_table\r
+# define uncompress z_uncompress\r
+# define zError z_zError\r
+# define zcalloc z_zcalloc\r
+# define zcfree z_zcfree\r
+# define zlibCompileFlags z_zlibCompileFlags\r
+# define zlibVersion z_zlibVersion\r
+\r
+/* all zlib typedefs in zlib.h and zconf.h */\r
+# define Byte z_Byte\r
+# define Bytef z_Bytef\r
+# define alloc_func z_alloc_func\r
+# define charf z_charf\r
+# define free_func z_free_func\r
+# define gzFile z_gzFile\r
+# define gz_header z_gz_header\r
+# define gz_headerp z_gz_headerp\r
+# define in_func z_in_func\r
+# define intf z_intf\r
+# define out_func z_out_func\r
+# define uInt z_uInt\r
+# define uIntf z_uIntf\r
+# define uLong z_uLong\r
+# define uLongf z_uLongf\r
+# define voidp z_voidp\r
+# define voidpc z_voidpc\r
+# define voidpf z_voidpf\r
+\r
+/* all zlib structs in zlib.h and zconf.h */\r
+# define gz_header_s z_gz_header_s\r
+# define internal_state z_internal_state\r
+\r
+#endif\r
+\r
+#if defined(__MSDOS__) && !defined(MSDOS)\r
+# define MSDOS\r
+#endif\r
+#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)\r
+# define OS2\r
+#endif\r
+#if defined(_WINDOWS) && !defined(WINDOWS)\r
+# define WINDOWS\r
+#endif\r
+#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)\r
+# ifndef WIN32\r
+# define WIN32\r
+# endif\r
+#endif\r
+#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)\r
+# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)\r
+# ifndef SYS16BIT\r
+# define SYS16BIT\r
+# endif\r
+# endif\r
+#endif\r
+\r
+/*\r
+ * Compile with -DMAXSEG_64K if the alloc function cannot allocate more\r
+ * than 64k bytes at a time (needed on systems with 16-bit int).\r
+ */\r
+#ifdef SYS16BIT\r
+# define MAXSEG_64K\r
+#endif\r
+#ifdef MSDOS\r
+# define UNALIGNED_OK\r
+#endif\r
+\r
+#ifdef __STDC_VERSION__\r
+# ifndef STDC\r
+# define STDC\r
+# endif\r
+# if __STDC_VERSION__ >= 199901L\r
+# ifndef STDC99\r
+# define STDC99\r
+# endif\r
+# endif\r
+#endif\r
+#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))\r
+# define STDC\r
+#endif\r
+#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))\r
+# define STDC\r
+#endif\r
+#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))\r
+# define STDC\r
+#endif\r
+#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))\r
+# define STDC\r
+#endif\r
+\r
+#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */\r
+# define STDC\r
+#endif\r
+\r
+#ifndef STDC\r
+# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */\r
+# define const /* note: need a more gentle solution here */\r
+# endif\r
+#endif\r
+\r
+/* Some Mac compilers merge all .h files incorrectly: */\r
+#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)\r
+# define NO_DUMMY_DECL\r
+#endif\r
+\r
+/* Maximum value for memLevel in deflateInit2 */\r
+#ifndef MAX_MEM_LEVEL\r
+# ifdef MAXSEG_64K\r
+# define MAX_MEM_LEVEL 8\r
+# else\r
+# define MAX_MEM_LEVEL 9\r
+# endif\r
+#endif\r
+\r
+/* Maximum value for windowBits in deflateInit2 and inflateInit2.\r
+ * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files\r
+ * created by gzip. (Files created by minigzip can still be extracted by\r
+ * gzip.)\r
+ */\r
+#ifndef MAX_WBITS\r
+# define MAX_WBITS 15 /* 32K LZ77 window */\r
+#endif\r
+\r
+/* The memory requirements for deflate are (in bytes):\r
+ (1 << (windowBits+2)) + (1 << (memLevel+9))\r
+ that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)\r
+ plus a few kilobytes for small objects. For example, if you want to reduce\r
+ the default memory requirements from 256K to 128K, compile with\r
+ make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"\r
+ Of course this will generally degrade compression (there's no free lunch).\r
+\r
+ The memory requirements for inflate are (in bytes) 1 << windowBits\r
+ that is, 32K for windowBits=15 (default value) plus a few kilobytes\r
+ for small objects.\r
+*/\r
+\r
+ /* Type declarations */\r
+\r
+#ifndef OF /* function prototypes */\r
+# ifdef STDC\r
+# define OF(args) args\r
+# else\r
+# define OF(args) ()\r
+# endif\r
+#endif\r
+\r
+/* The following definitions for FAR are needed only for MSDOS mixed\r
+ * model programming (small or medium model with some far allocations).\r
+ * This was tested only with MSC; for other MSDOS compilers you may have\r
+ * to define NO_MEMCPY in zutil.h. If you don't need the mixed model,\r
+ * just define FAR to be empty.\r
+ */\r
+#ifdef SYS16BIT\r
+# if defined(M_I86SM) || defined(M_I86MM)\r
+ /* MSC small or medium model */\r
+# define SMALL_MEDIUM\r
+# ifdef _MSC_VER\r
+# define FAR _far\r
+# else\r
+# define FAR far\r
+# endif\r
+# endif\r
+# if (defined(__SMALL__) || defined(__MEDIUM__))\r
+ /* Turbo C small or medium model */\r
+# define SMALL_MEDIUM\r
+# ifdef __BORLANDC__\r
+# define FAR _far\r
+# else\r
+# define FAR far\r
+# endif\r
+# endif\r
+#endif\r
+\r
+#if defined(WINDOWS) || defined(WIN32)\r
+ /* If building or using zlib as a DLL, define ZLIB_DLL.\r
+ * This is not mandatory, but it offers a little performance increase.\r
+ */\r
+# ifdef ZLIB_DLL\r
+# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))\r
+# ifdef ZLIB_INTERNAL\r
+# define ZEXTERN extern __declspec(dllexport)\r
+# else\r
+# define ZEXTERN extern __declspec(dllimport)\r
+# endif\r
+# endif\r
+# endif /* ZLIB_DLL */\r
+ /* If building or using zlib with the WINAPI/WINAPIV calling convention,\r
+ * define ZLIB_WINAPI.\r
+ * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.\r
+ */\r
+# ifdef ZLIB_WINAPI\r
+# ifdef FAR\r
+# undef FAR\r
+# endif\r
+# include <windows.h>\r
+ /* No need for _export, use ZLIB.DEF instead. */\r
+ /* For complete Windows compatibility, use WINAPI, not __stdcall. */\r
+# define ZEXPORT WINAPI\r
+# ifdef WIN32\r
+# define ZEXPORTVA WINAPIV\r
+# else\r
+# define ZEXPORTVA FAR CDECL\r
+# endif\r
+# endif\r
+#endif\r
+\r
+#if defined (__BEOS__)\r
+# ifdef ZLIB_DLL\r
+# ifdef ZLIB_INTERNAL\r
+# define ZEXPORT __declspec(dllexport)\r
+# define ZEXPORTVA __declspec(dllexport)\r
+# else\r
+# define ZEXPORT __declspec(dllimport)\r
+# define ZEXPORTVA __declspec(dllimport)\r
+# endif\r
+# endif\r
+#endif\r
+\r
+#ifndef ZEXTERN\r
+# define ZEXTERN extern\r
+#endif\r
+#ifndef ZEXPORT\r
+# define ZEXPORT\r
+#endif\r
+#ifndef ZEXPORTVA\r
+# define ZEXPORTVA\r
+#endif\r
+\r
+#ifndef FAR\r
+# define FAR\r
+#endif\r
+\r
+#if !defined(__MACTYPES__)\r
+typedef unsigned char Byte; /* 8 bits */\r
+#endif\r
+typedef unsigned int uInt; /* 16 bits or more */\r
+typedef unsigned long uLong; /* 32 bits or more */\r
+\r
+#ifdef SMALL_MEDIUM\r
+ /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */\r
+# define Bytef Byte FAR\r
+#else\r
+ typedef Byte FAR Bytef;\r
+#endif\r
+typedef char FAR charf;\r
+typedef int FAR intf;\r
+typedef uInt FAR uIntf;\r
+typedef uLong FAR uLongf;\r
+\r
+#ifdef STDC\r
+ typedef void const *voidpc;\r
+ typedef void FAR *voidpf;\r
+ typedef void *voidp;\r
+#else\r
+ typedef Byte const *voidpc;\r
+ typedef Byte FAR *voidpf;\r
+ typedef Byte *voidp;\r
+#endif\r
+\r
+#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */\r
+# define Z_HAVE_UNISTD_H\r
+#endif\r
+\r
+#ifdef STDC\r
+# include <sys/types.h> /* for off_t */\r
+#endif\r
+\r
+/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and\r
+ * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even\r
+ * though the former does not conform to the LFS document), but considering\r
+ * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as\r
+ * equivalently requesting no 64-bit operations\r
+ */\r
+#if -_LARGEFILE64_SOURCE - -1 == 1\r
+# undef _LARGEFILE64_SOURCE\r
+#endif\r
+\r
+#if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)\r
+# include <unistd.h> /* for SEEK_* and off_t */\r
+# ifdef VMS\r
+# include <unixio.h> /* for off_t */\r
+# endif\r
+# ifndef z_off_t\r
+# define z_off_t off_t\r
+# endif\r
+#endif\r
+\r
+#ifndef SEEK_SET\r
+# define SEEK_SET 0 /* Seek from beginning of file. */\r
+# define SEEK_CUR 1 /* Seek from current position. */\r
+# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */\r
+#endif\r
+\r
+#ifndef z_off_t\r
+# define z_off_t long\r
+#endif\r
+\r
+#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0\r
+# define z_off64_t off64_t\r
+#else\r
+# define z_off64_t z_off_t\r
+#endif\r
+\r
+#if defined(__OS400__)\r
+# define NO_vsnprintf\r
+#endif\r
+\r
+#if defined(__MVS__)\r
+# define NO_vsnprintf\r
+#endif\r
+\r
+/* MVS linker does not support external names larger than 8 bytes */\r
+#if defined(__MVS__)\r
+ #pragma map(deflateInit_,"DEIN")\r
+ #pragma map(deflateInit2_,"DEIN2")\r
+ #pragma map(deflateEnd,"DEEND")\r
+ #pragma map(deflateBound,"DEBND")\r
+ #pragma map(inflateInit_,"ININ")\r
+ #pragma map(inflateInit2_,"ININ2")\r
+ #pragma map(inflateEnd,"INEND")\r
+ #pragma map(inflateSync,"INSY")\r
+ #pragma map(inflateSetDictionary,"INSEDI")\r
+ #pragma map(compressBound,"CMBND")\r
+ #pragma map(inflate_table,"INTABL")\r
+ #pragma map(inflate_fast,"INFA")\r
+ #pragma map(inflate_copyright,"INCOPY")\r
+#endif\r
+\r
+#endif /* ZCONF_H */\r
--- /dev/null
+/* zlib.h -- interface of the 'zlib' general purpose compression library\r
+ version 1.2.5, April 19th, 2010\r
+\r
+ Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler\r
+\r
+ This software is provided 'as-is', without any express or implied\r
+ warranty. In no event will the authors be held liable for any damages\r
+ arising from the use of this software.\r
+\r
+ Permission is granted to anyone to use this software for any purpose,\r
+ including commercial applications, and to alter it and redistribute it\r
+ freely, subject to the following restrictions:\r
+\r
+ 1. The origin of this software must not be misrepresented; you must not\r
+ claim that you wrote the original software. If you use this software\r
+ in a product, an acknowledgment in the product documentation would be\r
+ appreciated but is not required.\r
+ 2. Altered source versions must be plainly marked as such, and must not be\r
+ misrepresented as being the original software.\r
+ 3. This notice may not be removed or altered from any source distribution.\r
+\r
+ Jean-loup Gailly Mark Adler\r
+ jloup@gzip.org madler@alumni.caltech.edu\r
+\r
+\r
+ The data format used by the zlib library is described by RFCs (Request for\r
+ Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt\r
+ (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).\r
+*/\r
+\r
+#ifndef ZLIB_H\r
+#define ZLIB_H\r
+\r
+#include "zconf.h"\r
+\r
+#ifdef __cplusplus\r
+extern "C" {\r
+#endif\r
+\r
+#define ZLIB_VERSION "1.2.5"\r
+#define ZLIB_VERNUM 0x1250\r
+#define ZLIB_VER_MAJOR 1\r
+#define ZLIB_VER_MINOR 2\r
+#define ZLIB_VER_REVISION 5\r
+#define ZLIB_VER_SUBREVISION 0\r
+\r
+/*\r
+ The 'zlib' compression library provides in-memory compression and\r
+ decompression functions, including integrity checks of the uncompressed data.\r
+ This version of the library supports only one compression method (deflation)\r
+ but other algorithms will be added later and will have the same stream\r
+ interface.\r
+\r
+ Compression can be done in a single step if the buffers are large enough,\r
+ or can be done by repeated calls of the compression function. In the latter\r
+ case, the application must provide more input and/or consume the output\r
+ (providing more output space) before each call.\r
+\r
+ The compressed data format used by default by the in-memory functions is\r
+ the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped\r
+ around a deflate stream, which is itself documented in RFC 1951.\r
+\r
+ The library also supports reading and writing files in gzip (.gz) format\r
+ with an interface similar to that of stdio using the functions that start\r
+ with "gz". The gzip format is different from the zlib format. gzip is a\r
+ gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.\r
+\r
+ This library can optionally read and write gzip streams in memory as well.\r
+\r
+ The zlib format was designed to be compact and fast for use in memory\r
+ and on communications channels. The gzip format was designed for single-\r
+ file compression on file systems, has a larger header than zlib to maintain\r
+ directory information, and uses a different, slower check method than zlib.\r
+\r
+ The library does not install any signal handler. The decoder checks\r
+ the consistency of the compressed data, so the library should never crash\r
+ even in case of corrupted input.\r
+*/\r
+\r
+typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));\r
+typedef void (*free_func) OF((voidpf opaque, voidpf address));\r
+\r
+struct internal_state;\r
+\r
+typedef struct z_stream_s {\r
+ Bytef *next_in; /* next input byte */\r
+ uInt avail_in; /* number of bytes available at next_in */\r
+ uLong total_in; /* total nb of input bytes read so far */\r
+\r
+ Bytef *next_out; /* next output byte should be put there */\r
+ uInt avail_out; /* remaining free space at next_out */\r
+ uLong total_out; /* total nb of bytes output so far */\r
+\r
+ char *msg; /* last error message, NULL if no error */\r
+ struct internal_state FAR *state; /* not visible by applications */\r
+\r
+ alloc_func zalloc; /* used to allocate the internal state */\r
+ free_func zfree; /* used to free the internal state */\r
+ voidpf opaque; /* private data object passed to zalloc and zfree */\r
+\r
+ int data_type; /* best guess about the data type: binary or text */\r
+ uLong adler; /* adler32 value of the uncompressed data */\r
+ uLong reserved; /* reserved for future use */\r
+} z_stream;\r
+\r
+typedef z_stream FAR *z_streamp;\r
+\r
+/*\r
+ gzip header information passed to and from zlib routines. See RFC 1952\r
+ for more details on the meanings of these fields.\r
+*/\r
+typedef struct gz_header_s {\r
+ int text; /* true if compressed data believed to be text */\r
+ uLong time; /* modification time */\r
+ int xflags; /* extra flags (not used when writing a gzip file) */\r
+ int os; /* operating system */\r
+ Bytef *extra; /* pointer to extra field or Z_NULL if none */\r
+ uInt extra_len; /* extra field length (valid if extra != Z_NULL) */\r
+ uInt extra_max; /* space at extra (only when reading header) */\r
+ Bytef *name; /* pointer to zero-terminated file name or Z_NULL */\r
+ uInt name_max; /* space at name (only when reading header) */\r
+ Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */\r
+ uInt comm_max; /* space at comment (only when reading header) */\r
+ int hcrc; /* true if there was or will be a header crc */\r
+ int done; /* true when done reading gzip header (not used\r
+ when writing a gzip file) */\r
+} gz_header;\r
+\r
+typedef gz_header FAR *gz_headerp;\r
+\r
+/*\r
+ The application must update next_in and avail_in when avail_in has dropped\r
+ to zero. It must update next_out and avail_out when avail_out has dropped\r
+ to zero. The application must initialize zalloc, zfree and opaque before\r
+ calling the init function. All other fields are set by the compression\r
+ library and must not be updated by the application.\r
+\r
+ The opaque value provided by the application will be passed as the first\r
+ parameter for calls of zalloc and zfree. This can be useful for custom\r
+ memory management. The compression library attaches no meaning to the\r
+ opaque value.\r
+\r
+ zalloc must return Z_NULL if there is not enough memory for the object.\r
+ If zlib is used in a multi-threaded application, zalloc and zfree must be\r
+ thread safe.\r
+\r
+ On 16-bit systems, the functions zalloc and zfree must be able to allocate\r
+ exactly 65536 bytes, but will not be required to allocate more than this if\r
+ the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS, pointers\r
+ returned by zalloc for objects of exactly 65536 bytes *must* have their\r
+ offset normalized to zero. The default allocation function provided by this\r
+ library ensures this (see zutil.c). To reduce memory requirements and avoid\r
+ any allocation of 64K objects, at the expense of compression ratio, compile\r
+ the library with -DMAX_WBITS=14 (see zconf.h).\r
+\r
+ The fields total_in and total_out can be used for statistics or progress\r
+ reports. After compression, total_in holds the total size of the\r
+ uncompressed data and may be saved for use in the decompressor (particularly\r
+ if the decompressor wants to decompress everything in a single step).\r
+*/\r
+\r
+ /* constants */\r
+\r
+#define Z_NO_FLUSH 0\r
+#define Z_PARTIAL_FLUSH 1\r
+#define Z_SYNC_FLUSH 2\r
+#define Z_FULL_FLUSH 3\r
+#define Z_FINISH 4\r
+#define Z_BLOCK 5\r
+#define Z_TREES 6\r
+/* Allowed flush values; see deflate() and inflate() below for details */\r
+\r
+#define Z_OK 0\r
+#define Z_STREAM_END 1\r
+#define Z_NEED_DICT 2\r
+#define Z_ERRNO (-1)\r
+#define Z_STREAM_ERROR (-2)\r
+#define Z_DATA_ERROR (-3)\r
+#define Z_MEM_ERROR (-4)\r
+#define Z_BUF_ERROR (-5)\r
+#define Z_VERSION_ERROR (-6)\r
+/* Return codes for the compression/decompression functions. Negative values\r
+ * are errors, positive values are used for special but normal events.\r
+ */\r
+\r
+#define Z_NO_COMPRESSION 0\r
+#define Z_BEST_SPEED 1\r
+#define Z_BEST_COMPRESSION 9\r
+#define Z_DEFAULT_COMPRESSION (-1)\r
+/* compression levels */\r
+\r
+#define Z_FILTERED 1\r
+#define Z_HUFFMAN_ONLY 2\r
+#define Z_RLE 3\r
+#define Z_FIXED 4\r
+#define Z_DEFAULT_STRATEGY 0\r
+/* compression strategy; see deflateInit2() below for details */\r
+\r
+#define Z_BINARY 0\r
+#define Z_TEXT 1\r
+#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */\r
+#define Z_UNKNOWN 2\r
+/* Possible values of the data_type field (though see inflate()) */\r
+\r
+#define Z_DEFLATED 8\r
+/* The deflate compression method (the only one supported in this version) */\r
+\r
+#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */\r
+\r
+#define zlib_version zlibVersion()\r
+/* for compatibility with versions < 1.0.2 */\r
+\r
+\r
+ /* basic functions */\r
+\r
+ZEXTERN const char * ZEXPORT zlibVersion OF((void));\r
+/* The application can compare zlibVersion and ZLIB_VERSION for consistency.\r
+ If the first character differs, the library code actually used is not\r
+ compatible with the zlib.h header file used by the application. This check\r
+ is automatically made by deflateInit and inflateInit.\r
+ */\r
+\r
+/*\r
+ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));\r
+\r
+ Initializes the internal stream state for compression. The fields\r
+ zalloc, zfree and opaque must be initialized before by the caller. If\r
+ zalloc and zfree are set to Z_NULL, deflateInit updates them to use default\r
+ allocation functions.\r
+\r
+ The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:\r
+ 1 gives best speed, 9 gives best compression, 0 gives no compression at all\r
+ (the input data is simply copied a block at a time). Z_DEFAULT_COMPRESSION\r
+ requests a default compromise between speed and compression (currently\r
+ equivalent to level 6).\r
+\r
+ deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough\r
+ memory, Z_STREAM_ERROR if level is not a valid compression level, or\r
+ Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible\r
+ with the version assumed by the caller (ZLIB_VERSION). msg is set to null\r
+ if there is no error message. deflateInit does not perform any compression:\r
+ this will be done by deflate().\r
+*/\r
+\r
+\r
+ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));\r
+/*\r
+ deflate compresses as much data as possible, and stops when the input\r
+ buffer becomes empty or the output buffer becomes full. It may introduce\r
+ some output latency (reading input without producing any output) except when\r
+ forced to flush.\r
+\r
+ The detailed semantics are as follows. deflate performs one or both of the\r
+ following actions:\r
+\r
+ - Compress more input starting at next_in and update next_in and avail_in\r
+ accordingly. If not all input can be processed (because there is not\r
+ enough room in the output buffer), next_in and avail_in are updated and\r
+ processing will resume at this point for the next call of deflate().\r
+\r
+ - Provide more output starting at next_out and update next_out and avail_out\r
+ accordingly. This action is forced if the parameter flush is non zero.\r
+ Forcing flush frequently degrades the compression ratio, so this parameter\r
+ should be set only when necessary (in interactive applications). Some\r
+ output may be provided even if flush is not set.\r
+\r
+ Before the call of deflate(), the application should ensure that at least\r
+ one of the actions is possible, by providing more input and/or consuming more\r
+ output, and updating avail_in or avail_out accordingly; avail_out should\r
+ never be zero before the call. The application can consume the compressed\r
+ output when it wants, for example when the output buffer is full (avail_out\r
+ == 0), or after each call of deflate(). If deflate returns Z_OK and with\r
+ zero avail_out, it must be called again after making room in the output\r
+ buffer because there might be more output pending.\r
+\r
+ Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to\r
+ decide how much data to accumulate before producing output, in order to\r
+ maximize compression.\r
+\r
+ If the parameter flush is set to Z_SYNC_FLUSH, all pending output is\r
+ flushed to the output buffer and the output is aligned on a byte boundary, so\r
+ that the decompressor can get all input data available so far. (In\r
+ particular avail_in is zero after the call if enough output space has been\r
+ provided before the call.) Flushing may degrade compression for some\r
+ compression algorithms and so it should be used only when necessary. This\r
+ completes the current deflate block and follows it with an empty stored block\r
+ that is three bits plus filler bits to the next byte, followed by four bytes\r
+ (00 00 ff ff).\r
+\r
+ If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the\r
+ output buffer, but the output is not aligned to a byte boundary. All of the\r
+ input data so far will be available to the decompressor, as for Z_SYNC_FLUSH.\r
+ This completes the current deflate block and follows it with an empty fixed\r
+ codes block that is 10 bits long. This assures that enough bytes are output\r
+ in order for the decompressor to finish the block before the empty fixed code\r
+ block.\r
+\r
+ If flush is set to Z_BLOCK, a deflate block is completed and emitted, as\r
+ for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to\r
+ seven bits of the current block are held to be written as the next byte after\r
+ the next deflate block is completed. In this case, the decompressor may not\r
+ be provided enough bits at this point in order to complete decompression of\r
+ the data provided so far to the compressor. It may need to wait for the next\r
+ block to be emitted. This is for advanced applications that need to control\r
+ the emission of deflate blocks.\r
+\r
+ If flush is set to Z_FULL_FLUSH, all output is flushed as with\r
+ Z_SYNC_FLUSH, and the compression state is reset so that decompression can\r
+ restart from this point if previous compressed data has been damaged or if\r
+ random access is desired. Using Z_FULL_FLUSH too often can seriously degrade\r
+ compression.\r
+\r
+ If deflate returns with avail_out == 0, this function must be called again\r
+ with the same value of the flush parameter and more output space (updated\r
+ avail_out), until the flush is complete (deflate returns with non-zero\r
+ avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that\r
+ avail_out is greater than six to avoid repeated flush markers due to\r
+ avail_out == 0 on return.\r
+\r
+ If the parameter flush is set to Z_FINISH, pending input is processed,\r
+ pending output is flushed and deflate returns with Z_STREAM_END if there was\r
+ enough output space; if deflate returns with Z_OK, this function must be\r
+ called again with Z_FINISH and more output space (updated avail_out) but no\r
+ more input data, until it returns with Z_STREAM_END or an error. After\r
+ deflate has returned Z_STREAM_END, the only possible operations on the stream\r
+ are deflateReset or deflateEnd.\r
+\r
+ Z_FINISH can be used immediately after deflateInit if all the compression\r
+ is to be done in a single step. In this case, avail_out must be at least the\r
+ value returned by deflateBound (see below). If deflate does not return\r
+ Z_STREAM_END, then it must be called again as described above.\r
+\r
+ deflate() sets strm->adler to the adler32 checksum of all input read\r
+ so far (that is, total_in bytes).\r
+\r
+ deflate() may update strm->data_type if it can make a good guess about\r
+ the input data type (Z_BINARY or Z_TEXT). In doubt, the data is considered\r
+ binary. This field is only for information purposes and does not affect the\r
+ compression algorithm in any manner.\r
+\r
+ deflate() returns Z_OK if some progress has been made (more input\r
+ processed or more output produced), Z_STREAM_END if all input has been\r
+ consumed and all output has been produced (only when flush is set to\r
+ Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example\r
+ if next_in or next_out was Z_NULL), Z_BUF_ERROR if no progress is possible\r
+ (for example avail_in or avail_out was zero). Note that Z_BUF_ERROR is not\r
+ fatal, and deflate() can be called again with more input and more output\r
+ space to continue compressing.\r
+*/\r
+\r
+\r
+ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));\r
+/*\r
+ All dynamically allocated data structures for this stream are freed.\r
+ This function discards any unprocessed input and does not flush any pending\r
+ output.\r
+\r
+ deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the\r
+ stream state was inconsistent, Z_DATA_ERROR if the stream was freed\r
+ prematurely (some input or output was discarded). In the error case, msg\r
+ may be set but then points to a static string (which must not be\r
+ deallocated).\r
+*/\r
+\r
+\r
+/*\r
+ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));\r
+\r
+ Initializes the internal stream state for decompression. The fields\r
+ next_in, avail_in, zalloc, zfree and opaque must be initialized before by\r
+ the caller. If next_in is not Z_NULL and avail_in is large enough (the\r
+ exact value depends on the compression method), inflateInit determines the\r
+ compression method from the zlib header and allocates all data structures\r
+ accordingly; otherwise the allocation will be deferred to the first call of\r
+ inflate. If zalloc and zfree are set to Z_NULL, inflateInit updates them to\r
+ use default allocation functions.\r
+\r
+ inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough\r
+ memory, Z_VERSION_ERROR if the zlib library version is incompatible with the\r
+ version assumed by the caller, or Z_STREAM_ERROR if the parameters are\r
+ invalid, such as a null pointer to the structure. msg is set to null if\r
+ there is no error message. inflateInit does not perform any decompression\r
+ apart from possibly reading the zlib header if present: actual decompression\r
+ will be done by inflate(). (So next_in and avail_in may be modified, but\r
+ next_out and avail_out are unused and unchanged.) The current implementation\r
+ of inflateInit() does not process any header information -- that is deferred\r
+ until inflate() is called.\r
+*/\r
+\r
+\r
+ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));\r
+/*\r
+ inflate decompresses as much data as possible, and stops when the input\r
+ buffer becomes empty or the output buffer becomes full. It may introduce\r
+ some output latency (reading input without producing any output) except when\r
+ forced to flush.\r
+\r
+ The detailed semantics are as follows. inflate performs one or both of the\r
+ following actions:\r
+\r
+ - Decompress more input starting at next_in and update next_in and avail_in\r
+ accordingly. If not all input can be processed (because there is not\r
+ enough room in the output buffer), next_in is updated and processing will\r
+ resume at this point for the next call of inflate().\r
+\r
+ - Provide more output starting at next_out and update next_out and avail_out\r
+ accordingly. inflate() provides as much output as possible, until there is\r
+ no more input data or no more space in the output buffer (see below about\r
+ the flush parameter).\r
+\r
+ Before the call of inflate(), the application should ensure that at least\r
+ one of the actions is possible, by providing more input and/or consuming more\r
+ output, and updating the next_* and avail_* values accordingly. The\r
+ application can consume the uncompressed output when it wants, for example\r
+ when the output buffer is full (avail_out == 0), or after each call of\r
+ inflate(). If inflate returns Z_OK and with zero avail_out, it must be\r
+ called again after making room in the output buffer because there might be\r
+ more output pending.\r
+\r
+ The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH,\r
+ Z_BLOCK, or Z_TREES. Z_SYNC_FLUSH requests that inflate() flush as much\r
+ output as possible to the output buffer. Z_BLOCK requests that inflate()\r
+ stop if and when it gets to the next deflate block boundary. When decoding\r
+ the zlib or gzip format, this will cause inflate() to return immediately\r
+ after the header and before the first block. When doing a raw inflate,\r
+ inflate() will go ahead and process the first block, and will return when it\r
+ gets to the end of that block, or when it runs out of data.\r
+\r
+ The Z_BLOCK option assists in appending to or combining deflate streams.\r
+ Also to assist in this, on return inflate() will set strm->data_type to the\r
+ number of unused bits in the last byte taken from strm->next_in, plus 64 if\r
+ inflate() is currently decoding the last block in the deflate stream, plus\r
+ 128 if inflate() returned immediately after decoding an end-of-block code or\r
+ decoding the complete header up to just before the first byte of the deflate\r
+ stream. The end-of-block will not be indicated until all of the uncompressed\r
+ data from that block has been written to strm->next_out. The number of\r
+ unused bits may in general be greater than seven, except when bit 7 of\r
+ data_type is set, in which case the number of unused bits will be less than\r
+ eight. data_type is set as noted here every time inflate() returns for all\r
+ flush options, and so can be used to determine the amount of currently\r
+ consumed input in bits.\r
+\r
+ The Z_TREES option behaves as Z_BLOCK does, but it also returns when the\r
+ end of each deflate block header is reached, before any actual data in that\r
+ block is decoded. This allows the caller to determine the length of the\r
+ deflate block header for later use in random access within a deflate block.\r
+ 256 is added to the value of strm->data_type when inflate() returns\r
+ immediately after reaching the end of the deflate block header.\r
+\r
+ inflate() should normally be called until it returns Z_STREAM_END or an\r
+ error. However if all decompression is to be performed in a single step (a\r
+ single call of inflate), the parameter flush should be set to Z_FINISH. In\r
+ this case all pending input is processed and all pending output is flushed;\r
+ avail_out must be large enough to hold all the uncompressed data. (The size\r
+ of the uncompressed data may have been saved by the compressor for this\r
+ purpose.) The next operation on this stream must be inflateEnd to deallocate\r
+ the decompression state. The use of Z_FINISH is never required, but can be\r
+ used to inform inflate that a faster approach may be used for the single\r
+ inflate() call.\r
+\r
+ In this implementation, inflate() always flushes as much output as\r
+ possible to the output buffer, and always uses the faster approach on the\r
+ first call. So the only effect of the flush parameter in this implementation\r
+ is on the return value of inflate(), as noted below, or when it returns early\r
+ because Z_BLOCK or Z_TREES is used.\r
+\r
+ If a preset dictionary is needed after this call (see inflateSetDictionary\r
+ below), inflate sets strm->adler to the adler32 checksum of the dictionary\r
+ chosen by the compressor and returns Z_NEED_DICT; otherwise it sets\r
+ strm->adler to the adler32 checksum of all output produced so far (that is,\r
+ total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described\r
+ below. At the end of the stream, inflate() checks that its computed adler32\r
+ checksum is equal to that saved by the compressor and returns Z_STREAM_END\r
+ only if the checksum is correct.\r
+\r
+ inflate() can decompress and check either zlib-wrapped or gzip-wrapped\r
+ deflate data. The header type is detected automatically, if requested when\r
+ initializing with inflateInit2(). Any information contained in the gzip\r
+ header is not retained, so applications that need that information should\r
+ instead use raw inflate, see inflateInit2() below, or inflateBack() and\r
+ perform their own processing of the gzip header and trailer.\r
+\r
+ inflate() returns Z_OK if some progress has been made (more input processed\r
+ or more output produced), Z_STREAM_END if the end of the compressed data has\r
+ been reached and all uncompressed output has been produced, Z_NEED_DICT if a\r
+ preset dictionary is needed at this point, Z_DATA_ERROR if the input data was\r
+ corrupted (input stream not conforming to the zlib format or incorrect check\r
+ value), Z_STREAM_ERROR if the stream structure was inconsistent (for example\r
+ next_in or next_out was Z_NULL), Z_MEM_ERROR if there was not enough memory,\r
+ Z_BUF_ERROR if no progress is possible or if there was not enough room in the\r
+ output buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and\r
+ inflate() can be called again with more input and more output space to\r
+ continue decompressing. If Z_DATA_ERROR is returned, the application may\r
+ then call inflateSync() to look for a good compression block if a partial\r
+ recovery of the data is desired.\r
+*/\r
+\r
+\r
+ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));\r
+/*\r
+ All dynamically allocated data structures for this stream are freed.\r
+ This function discards any unprocessed input and does not flush any pending\r
+ output.\r
+\r
+ inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state\r
+ was inconsistent. In the error case, msg may be set but then points to a\r
+ static string (which must not be deallocated).\r
+*/\r
+\r
+\r
+ /* Advanced functions */\r
+\r
+/*\r
+ The following functions are needed only in some special applications.\r
+*/\r
+\r
+/*\r
+ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,\r
+ int level,\r
+ int method,\r
+ int windowBits,\r
+ int memLevel,\r
+ int strategy));\r
+\r
+ This is another version of deflateInit with more compression options. The\r
+ fields next_in, zalloc, zfree and opaque must be initialized before by the\r
+ caller.\r
+\r
+ The method parameter is the compression method. It must be Z_DEFLATED in\r
+ this version of the library.\r
+\r
+ The windowBits parameter is the base two logarithm of the window size\r
+ (the size of the history buffer). It should be in the range 8..15 for this\r
+ version of the library. Larger values of this parameter result in better\r
+ compression at the expense of memory usage. The default value is 15 if\r
+ deflateInit is used instead.\r
+\r
+ windowBits can also be -8..-15 for raw deflate. In this case, -windowBits\r
+ determines the window size. deflate() will then generate raw deflate data\r
+ with no zlib header or trailer, and will not compute an adler32 check value.\r
+\r
+ windowBits can also be greater than 15 for optional gzip encoding. Add\r
+ 16 to windowBits to write a simple gzip header and trailer around the\r
+ compressed data instead of a zlib wrapper. The gzip header will have no\r
+ file name, no extra data, no comment, no modification time (set to zero), no\r
+ header crc, and the operating system will be set to 255 (unknown). If a\r
+ gzip stream is being written, strm->adler is a crc32 instead of an adler32.\r
+\r
+ The memLevel parameter specifies how much memory should be allocated\r
+ for the internal compression state. memLevel=1 uses minimum memory but is\r
+ slow and reduces compression ratio; memLevel=9 uses maximum memory for\r
+ optimal speed. The default value is 8. See zconf.h for total memory usage\r
+ as a function of windowBits and memLevel.\r
+\r
+ The strategy parameter is used to tune the compression algorithm. Use the\r
+ value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a\r
+ filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no\r
+ string match), or Z_RLE to limit match distances to one (run-length\r
+ encoding). Filtered data consists mostly of small values with a somewhat\r
+ random distribution. In this case, the compression algorithm is tuned to\r
+ compress them better. The effect of Z_FILTERED is to force more Huffman\r
+ coding and less string matching; it is somewhat intermediate between\r
+ Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as\r
+ fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data. The\r
+ strategy parameter only affects the compression ratio but not the\r
+ correctness of the compressed output even if it is not set appropriately.\r
+ Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler\r
+ decoder for special applications.\r
+\r
+ deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough\r
+ memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid\r
+ method), or Z_VERSION_ERROR if the zlib library version (zlib_version) is\r
+ incompatible with the version assumed by the caller (ZLIB_VERSION). msg is\r
+ set to null if there is no error message. deflateInit2 does not perform any\r
+ compression: this will be done by deflate().\r
+*/\r
+\r
+ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,\r
+ const Bytef *dictionary,\r
+ uInt dictLength));\r
+/*\r
+ Initializes the compression dictionary from the given byte sequence\r
+ without producing any compressed output. This function must be called\r
+ immediately after deflateInit, deflateInit2 or deflateReset, before any call\r
+ of deflate. The compressor and decompressor must use exactly the same\r
+ dictionary (see inflateSetDictionary).\r
+\r
+ The dictionary should consist of strings (byte sequences) that are likely\r
+ to be encountered later in the data to be compressed, with the most commonly\r
+ used strings preferably put towards the end of the dictionary. Using a\r
+ dictionary is most useful when the data to be compressed is short and can be\r
+ predicted with good accuracy; the data can then be compressed better than\r
+ with the default empty dictionary.\r
+\r
+ Depending on the size of the compression data structures selected by\r
+ deflateInit or deflateInit2, a part of the dictionary may in effect be\r
+ discarded, for example if the dictionary is larger than the window size\r
+ provided in deflateInit or deflateInit2. Thus the strings most likely to be\r
+ useful should be put at the end of the dictionary, not at the front. In\r
+ addition, the current implementation of deflate will use at most the window\r
+ size minus 262 bytes of the provided dictionary.\r
+\r
+ Upon return of this function, strm->adler is set to the adler32 value\r
+ of the dictionary; the decompressor may later use this value to determine\r
+ which dictionary has been used by the compressor. (The adler32 value\r
+ applies to the whole dictionary even if only a subset of the dictionary is\r
+ actually used by the compressor.) If a raw deflate was requested, then the\r
+ adler32 value is not computed and strm->adler is not set.\r
+\r
+ deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a\r
+ parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is\r
+ inconsistent (for example if deflate has already been called for this stream\r
+ or if the compression method is bsort). deflateSetDictionary does not\r
+ perform any compression: this will be done by deflate().\r
+*/\r
+\r
+ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,\r
+ z_streamp source));\r
+/*\r
+ Sets the destination stream as a complete copy of the source stream.\r
+\r
+ This function can be useful when several compression strategies will be\r
+ tried, for example when there are several ways of pre-processing the input\r
+ data with a filter. The streams that will be discarded should then be freed\r
+ by calling deflateEnd. Note that deflateCopy duplicates the internal\r
+ compression state which can be quite large, so this strategy is slow and can\r
+ consume lots of memory.\r
+\r
+ deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not\r
+ enough memory, Z_STREAM_ERROR if the source stream state was inconsistent\r
+ (such as zalloc being Z_NULL). msg is left unchanged in both source and\r
+ destination.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));\r
+/*\r
+ This function is equivalent to deflateEnd followed by deflateInit,\r
+ but does not free and reallocate all the internal compression state. The\r
+ stream will keep the same compression level and any other attributes that\r
+ may have been set by deflateInit2.\r
+\r
+ deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source\r
+ stream state was inconsistent (such as zalloc or state being Z_NULL).\r
+*/\r
+\r
+ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,\r
+ int level,\r
+ int strategy));\r
+/*\r
+ Dynamically update the compression level and compression strategy. The\r
+ interpretation of level and strategy is as in deflateInit2. This can be\r
+ used to switch between compression and straight copy of the input data, or\r
+ to switch to a different kind of input data requiring a different strategy.\r
+ If the compression level is changed, the input available so far is\r
+ compressed with the old level (and may be flushed); the new level will take\r
+ effect only at the next call of deflate().\r
+\r
+ Before the call of deflateParams, the stream state must be set as for\r
+ a call of deflate(), since the currently available input may have to be\r
+ compressed and flushed. In particular, strm->avail_out must be non-zero.\r
+\r
+ deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source\r
+ stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR if\r
+ strm->avail_out was zero.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,\r
+ int good_length,\r
+ int max_lazy,\r
+ int nice_length,\r
+ int max_chain));\r
+/*\r
+ Fine tune deflate's internal compression parameters. This should only be\r
+ used by someone who understands the algorithm used by zlib's deflate for\r
+ searching for the best matching string, and even then only by the most\r
+ fanatic optimizer trying to squeeze out the last compressed bit for their\r
+ specific input data. Read the deflate.c source code for the meaning of the\r
+ max_lazy, good_length, nice_length, and max_chain parameters.\r
+\r
+ deflateTune() can be called after deflateInit() or deflateInit2(), and\r
+ returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.\r
+ */\r
+\r
+ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,\r
+ uLong sourceLen));\r
+/*\r
+ deflateBound() returns an upper bound on the compressed size after\r
+ deflation of sourceLen bytes. It must be called after deflateInit() or\r
+ deflateInit2(), and after deflateSetHeader(), if used. This would be used\r
+ to allocate an output buffer for deflation in a single pass, and so would be\r
+ called before deflate().\r
+*/\r
+\r
+ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,\r
+ int bits,\r
+ int value));\r
+/*\r
+ deflatePrime() inserts bits in the deflate output stream. The intent\r
+ is that this function is used to start off the deflate output with the bits\r
+ leftover from a previous deflate stream when appending to it. As such, this\r
+ function can only be used for raw deflate, and must be used before the first\r
+ deflate() call after a deflateInit2() or deflateReset(). bits must be less\r
+ than or equal to 16, and that many of the least significant bits of value\r
+ will be inserted in the output.\r
+\r
+ deflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source\r
+ stream state was inconsistent.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,\r
+ gz_headerp head));\r
+/*\r
+ deflateSetHeader() provides gzip header information for when a gzip\r
+ stream is requested by deflateInit2(). deflateSetHeader() may be called\r
+ after deflateInit2() or deflateReset() and before the first call of\r
+ deflate(). The text, time, os, extra field, name, and comment information\r
+ in the provided gz_header structure are written to the gzip header (xflag is\r
+ ignored -- the extra flags are set according to the compression level). The\r
+ caller must assure that, if not Z_NULL, name and comment are terminated with\r
+ a zero byte, and that if extra is not Z_NULL, that extra_len bytes are\r
+ available there. If hcrc is true, a gzip header crc is included. Note that\r
+ the current versions of the command-line version of gzip (up through version\r
+ 1.3.x) do not support header crc's, and will report that it is a "multi-part\r
+ gzip file" and give up.\r
+\r
+ If deflateSetHeader is not used, the default gzip header has text false,\r
+ the time set to zero, and os set to 255, with no extra, name, or comment\r
+ fields. The gzip header is returned to the default state by deflateReset().\r
+\r
+ deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source\r
+ stream state was inconsistent.\r
+*/\r
+\r
+/*\r
+ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,\r
+ int windowBits));\r
+\r
+ This is another version of inflateInit with an extra parameter. The\r
+ fields next_in, avail_in, zalloc, zfree and opaque must be initialized\r
+ before by the caller.\r
+\r
+ The windowBits parameter is the base two logarithm of the maximum window\r
+ size (the size of the history buffer). It should be in the range 8..15 for\r
+ this version of the library. The default value is 15 if inflateInit is used\r
+ instead. windowBits must be greater than or equal to the windowBits value\r
+ provided to deflateInit2() while compressing, or it must be equal to 15 if\r
+ deflateInit2() was not used. If a compressed stream with a larger window\r
+ size is given as input, inflate() will return with the error code\r
+ Z_DATA_ERROR instead of trying to allocate a larger window.\r
+\r
+ windowBits can also be zero to request that inflate use the window size in\r
+ the zlib header of the compressed stream.\r
+\r
+ windowBits can also be -8..-15 for raw inflate. In this case, -windowBits\r
+ determines the window size. inflate() will then process raw deflate data,\r
+ not looking for a zlib or gzip header, not generating a check value, and not\r
+ looking for any check values for comparison at the end of the stream. This\r
+ is for use with other formats that use the deflate compressed data format\r
+ such as zip. Those formats provide their own check values. If a custom\r
+ format is developed using the raw deflate format for compressed data, it is\r
+ recommended that a check value such as an adler32 or a crc32 be applied to\r
+ the uncompressed data as is done in the zlib, gzip, and zip formats. For\r
+ most applications, the zlib format should be used as is. Note that comments\r
+ above on the use in deflateInit2() applies to the magnitude of windowBits.\r
+\r
+ windowBits can also be greater than 15 for optional gzip decoding. Add\r
+ 32 to windowBits to enable zlib and gzip decoding with automatic header\r
+ detection, or add 16 to decode only the gzip format (the zlib format will\r
+ return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is a\r
+ crc32 instead of an adler32.\r
+\r
+ inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough\r
+ memory, Z_VERSION_ERROR if the zlib library version is incompatible with the\r
+ version assumed by the caller, or Z_STREAM_ERROR if the parameters are\r
+ invalid, such as a null pointer to the structure. msg is set to null if\r
+ there is no error message. inflateInit2 does not perform any decompression\r
+ apart from possibly reading the zlib header if present: actual decompression\r
+ will be done by inflate(). (So next_in and avail_in may be modified, but\r
+ next_out and avail_out are unused and unchanged.) The current implementation\r
+ of inflateInit2() does not process any header information -- that is\r
+ deferred until inflate() is called.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,\r
+ const Bytef *dictionary,\r
+ uInt dictLength));\r
+/*\r
+ Initializes the decompression dictionary from the given uncompressed byte\r
+ sequence. This function must be called immediately after a call of inflate,\r
+ if that call returned Z_NEED_DICT. The dictionary chosen by the compressor\r
+ can be determined from the adler32 value returned by that call of inflate.\r
+ The compressor and decompressor must use exactly the same dictionary (see\r
+ deflateSetDictionary). For raw inflate, this function can be called\r
+ immediately after inflateInit2() or inflateReset() and before any call of\r
+ inflate() to set the dictionary. The application must insure that the\r
+ dictionary that was used for compression is provided.\r
+\r
+ inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a\r
+ parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is\r
+ inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the\r
+ expected one (incorrect adler32 value). inflateSetDictionary does not\r
+ perform any decompression: this will be done by subsequent calls of\r
+ inflate().\r
+*/\r
+\r
+ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));\r
+/*\r
+ Skips invalid compressed data until a full flush point (see above the\r
+ description of deflate with Z_FULL_FLUSH) can be found, or until all\r
+ available input is skipped. No output is provided.\r
+\r
+ inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR\r
+ if no more input was provided, Z_DATA_ERROR if no flush point has been\r
+ found, or Z_STREAM_ERROR if the stream structure was inconsistent. In the\r
+ success case, the application may save the current current value of total_in\r
+ which indicates where valid compressed data was found. In the error case,\r
+ the application may repeatedly call inflateSync, providing more input each\r
+ time, until success or end of the input data.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,\r
+ z_streamp source));\r
+/*\r
+ Sets the destination stream as a complete copy of the source stream.\r
+\r
+ This function can be useful when randomly accessing a large stream. The\r
+ first pass through the stream can periodically record the inflate state,\r
+ allowing restarting inflate at those points when randomly accessing the\r
+ stream.\r
+\r
+ inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not\r
+ enough memory, Z_STREAM_ERROR if the source stream state was inconsistent\r
+ (such as zalloc being Z_NULL). msg is left unchanged in both source and\r
+ destination.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));\r
+/*\r
+ This function is equivalent to inflateEnd followed by inflateInit,\r
+ but does not free and reallocate all the internal decompression state. The\r
+ stream will keep attributes that may have been set by inflateInit2.\r
+\r
+ inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source\r
+ stream state was inconsistent (such as zalloc or state being Z_NULL).\r
+*/\r
+\r
+ZEXTERN int ZEXPORT inflateReset2 OF((z_streamp strm,\r
+ int windowBits));\r
+/*\r
+ This function is the same as inflateReset, but it also permits changing\r
+ the wrap and window size requests. The windowBits parameter is interpreted\r
+ the same as it is for inflateInit2.\r
+\r
+ inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source\r
+ stream state was inconsistent (such as zalloc or state being Z_NULL), or if\r
+ the windowBits parameter is invalid.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,\r
+ int bits,\r
+ int value));\r
+/*\r
+ This function inserts bits in the inflate input stream. The intent is\r
+ that this function is used to start inflating at a bit position in the\r
+ middle of a byte. The provided bits will be used before any bytes are used\r
+ from next_in. This function should only be used with raw inflate, and\r
+ should be used before the first inflate() call after inflateInit2() or\r
+ inflateReset(). bits must be less than or equal to 16, and that many of the\r
+ least significant bits of value will be inserted in the input.\r
+\r
+ If bits is negative, then the input stream bit buffer is emptied. Then\r
+ inflatePrime() can be called again to put bits in the buffer. This is used\r
+ to clear out bits leftover after feeding inflate a block description prior\r
+ to feeding inflate codes.\r
+\r
+ inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source\r
+ stream state was inconsistent.\r
+*/\r
+\r
+ZEXTERN long ZEXPORT inflateMark OF((z_streamp strm));\r
+/*\r
+ This function returns two values, one in the lower 16 bits of the return\r
+ value, and the other in the remaining upper bits, obtained by shifting the\r
+ return value down 16 bits. If the upper value is -1 and the lower value is\r
+ zero, then inflate() is currently decoding information outside of a block.\r
+ If the upper value is -1 and the lower value is non-zero, then inflate is in\r
+ the middle of a stored block, with the lower value equaling the number of\r
+ bytes from the input remaining to copy. If the upper value is not -1, then\r
+ it is the number of bits back from the current bit position in the input of\r
+ the code (literal or length/distance pair) currently being processed. In\r
+ that case the lower value is the number of bytes already emitted for that\r
+ code.\r
+\r
+ A code is being processed if inflate is waiting for more input to complete\r
+ decoding of the code, or if it has completed decoding but is waiting for\r
+ more output space to write the literal or match data.\r
+\r
+ inflateMark() is used to mark locations in the input data for random\r
+ access, which may be at bit positions, and to note those cases where the\r
+ output of a code may span boundaries of random access blocks. The current\r
+ location in the input stream can be determined from avail_in and data_type\r
+ as noted in the description for the Z_BLOCK flush parameter for inflate.\r
+\r
+ inflateMark returns the value noted above or -1 << 16 if the provided\r
+ source stream state was inconsistent.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,\r
+ gz_headerp head));\r
+/*\r
+ inflateGetHeader() requests that gzip header information be stored in the\r
+ provided gz_header structure. inflateGetHeader() may be called after\r
+ inflateInit2() or inflateReset(), and before the first call of inflate().\r
+ As inflate() processes the gzip stream, head->done is zero until the header\r
+ is completed, at which time head->done is set to one. If a zlib stream is\r
+ being decoded, then head->done is set to -1 to indicate that there will be\r
+ no gzip header information forthcoming. Note that Z_BLOCK or Z_TREES can be\r
+ used to force inflate() to return immediately after header processing is\r
+ complete and before any actual data is decompressed.\r
+\r
+ The text, time, xflags, and os fields are filled in with the gzip header\r
+ contents. hcrc is set to true if there is a header CRC. (The header CRC\r
+ was valid if done is set to one.) If extra is not Z_NULL, then extra_max\r
+ contains the maximum number of bytes to write to extra. Once done is true,\r
+ extra_len contains the actual extra field length, and extra contains the\r
+ extra field, or that field truncated if extra_max is less than extra_len.\r
+ If name is not Z_NULL, then up to name_max characters are written there,\r
+ terminated with a zero unless the length is greater than name_max. If\r
+ comment is not Z_NULL, then up to comm_max characters are written there,\r
+ terminated with a zero unless the length is greater than comm_max. When any\r
+ of extra, name, or comment are not Z_NULL and the respective field is not\r
+ present in the header, then that field is set to Z_NULL to signal its\r
+ absence. This allows the use of deflateSetHeader() with the returned\r
+ structure to duplicate the header. However if those fields are set to\r
+ allocated memory, then the application will need to save those pointers\r
+ elsewhere so that they can be eventually freed.\r
+\r
+ If inflateGetHeader is not used, then the header information is simply\r
+ discarded. The header is always checked for validity, including the header\r
+ CRC if present. inflateReset() will reset the process to discard the header\r
+ information. The application would need to call inflateGetHeader() again to\r
+ retrieve the header from the next gzip stream.\r
+\r
+ inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source\r
+ stream state was inconsistent.\r
+*/\r
+\r
+/*\r
+ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,\r
+ unsigned char FAR *window));\r
+\r
+ Initialize the internal stream state for decompression using inflateBack()\r
+ calls. The fields zalloc, zfree and opaque in strm must be initialized\r
+ before the call. If zalloc and zfree are Z_NULL, then the default library-\r
+ derived memory allocation routines are used. windowBits is the base two\r
+ logarithm of the window size, in the range 8..15. window is a caller\r
+ supplied buffer of that size. Except for special applications where it is\r
+ assured that deflate was used with small window sizes, windowBits must be 15\r
+ and a 32K byte window must be supplied to be able to decompress general\r
+ deflate streams.\r
+\r
+ See inflateBack() for the usage of these routines.\r
+\r
+ inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of\r
+ the paramaters are invalid, Z_MEM_ERROR if the internal state could not be\r
+ allocated, or Z_VERSION_ERROR if the version of the library does not match\r
+ the version of the header file.\r
+*/\r
+\r
+typedef unsigned (*in_func) OF((void FAR *, unsigned char FAR * FAR *));\r
+typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));\r
+\r
+ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,\r
+ in_func in, void FAR *in_desc,\r
+ out_func out, void FAR *out_desc));\r
+/*\r
+ inflateBack() does a raw inflate with a single call using a call-back\r
+ interface for input and output. This is more efficient than inflate() for\r
+ file i/o applications in that it avoids copying between the output and the\r
+ sliding window by simply making the window itself the output buffer. This\r
+ function trusts the application to not change the output buffer passed by\r
+ the output function, at least until inflateBack() returns.\r
+\r
+ inflateBackInit() must be called first to allocate the internal state\r
+ and to initialize the state with the user-provided window buffer.\r
+ inflateBack() may then be used multiple times to inflate a complete, raw\r
+ deflate stream with each call. inflateBackEnd() is then called to free the\r
+ allocated state.\r
+\r
+ A raw deflate stream is one with no zlib or gzip header or trailer.\r
+ This routine would normally be used in a utility that reads zip or gzip\r
+ files and writes out uncompressed files. The utility would decode the\r
+ header and process the trailer on its own, hence this routine expects only\r
+ the raw deflate stream to decompress. This is different from the normal\r
+ behavior of inflate(), which expects either a zlib or gzip header and\r
+ trailer around the deflate stream.\r
+\r
+ inflateBack() uses two subroutines supplied by the caller that are then\r
+ called by inflateBack() for input and output. inflateBack() calls those\r
+ routines until it reads a complete deflate stream and writes out all of the\r
+ uncompressed data, or until it encounters an error. The function's\r
+ parameters and return types are defined above in the in_func and out_func\r
+ typedefs. inflateBack() will call in(in_desc, &buf) which should return the\r
+ number of bytes of provided input, and a pointer to that input in buf. If\r
+ there is no input available, in() must return zero--buf is ignored in that\r
+ case--and inflateBack() will return a buffer error. inflateBack() will call\r
+ out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. out()\r
+ should return zero on success, or non-zero on failure. If out() returns\r
+ non-zero, inflateBack() will return with an error. Neither in() nor out()\r
+ are permitted to change the contents of the window provided to\r
+ inflateBackInit(), which is also the buffer that out() uses to write from.\r
+ The length written by out() will be at most the window size. Any non-zero\r
+ amount of input may be provided by in().\r
+\r
+ For convenience, inflateBack() can be provided input on the first call by\r
+ setting strm->next_in and strm->avail_in. If that input is exhausted, then\r
+ in() will be called. Therefore strm->next_in must be initialized before\r
+ calling inflateBack(). If strm->next_in is Z_NULL, then in() will be called\r
+ immediately for input. If strm->next_in is not Z_NULL, then strm->avail_in\r
+ must also be initialized, and then if strm->avail_in is not zero, input will\r
+ initially be taken from strm->next_in[0 .. strm->avail_in - 1].\r
+\r
+ The in_desc and out_desc parameters of inflateBack() is passed as the\r
+ first parameter of in() and out() respectively when they are called. These\r
+ descriptors can be optionally used to pass any information that the caller-\r
+ supplied in() and out() functions need to do their job.\r
+\r
+ On return, inflateBack() will set strm->next_in and strm->avail_in to\r
+ pass back any unused input that was provided by the last in() call. The\r
+ return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR\r
+ if in() or out() returned an error, Z_DATA_ERROR if there was a format error\r
+ in the deflate stream (in which case strm->msg is set to indicate the nature\r
+ of the error), or Z_STREAM_ERROR if the stream was not properly initialized.\r
+ In the case of Z_BUF_ERROR, an input or output error can be distinguished\r
+ using strm->next_in which will be Z_NULL only if in() returned an error. If\r
+ strm->next_in is not Z_NULL, then the Z_BUF_ERROR was due to out() returning\r
+ non-zero. (in() will always be called before out(), so strm->next_in is\r
+ assured to be defined if out() returns non-zero.) Note that inflateBack()\r
+ cannot return Z_OK.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));\r
+/*\r
+ All memory allocated by inflateBackInit() is freed.\r
+\r
+ inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream\r
+ state was inconsistent.\r
+*/\r
+\r
+ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));\r
+/* Return flags indicating compile-time options.\r
+\r
+ Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:\r
+ 1.0: size of uInt\r
+ 3.2: size of uLong\r
+ 5.4: size of voidpf (pointer)\r
+ 7.6: size of z_off_t\r
+\r
+ Compiler, assembler, and debug options:\r
+ 8: DEBUG\r
+ 9: ASMV or ASMINF -- use ASM code\r
+ 10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention\r
+ 11: 0 (reserved)\r
+\r
+ One-time table building (smaller code, but not thread-safe if true):\r
+ 12: BUILDFIXED -- build static block decoding tables when needed\r
+ 13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed\r
+ 14,15: 0 (reserved)\r
+\r
+ Library content (indicates missing functionality):\r
+ 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking\r
+ deflate code when not needed)\r
+ 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect\r
+ and decode gzip streams (to avoid linking crc code)\r
+ 18-19: 0 (reserved)\r
+\r
+ Operation variations (changes in library functionality):\r
+ 20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate\r
+ 21: FASTEST -- deflate algorithm with only one, lowest compression level\r
+ 22,23: 0 (reserved)\r
+\r
+ The sprintf variant used by gzprintf (zero is best):\r
+ 24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format\r
+ 25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure!\r
+ 26: 0 = returns value, 1 = void -- 1 means inferred string length returned\r
+\r
+ Remainder:\r
+ 27-31: 0 (reserved)\r
+ */\r
+\r
+\r
+ /* utility functions */\r
+\r
+/*\r
+ The following utility functions are implemented on top of the basic\r
+ stream-oriented functions. To simplify the interface, some default options\r
+ are assumed (compression level and memory usage, standard memory allocation\r
+ functions). The source code of these utility functions can be modified if\r
+ you need special options.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,\r
+ const Bytef *source, uLong sourceLen));\r
+/*\r
+ Compresses the source buffer into the destination buffer. sourceLen is\r
+ the byte length of the source buffer. Upon entry, destLen is the total size\r
+ of the destination buffer, which must be at least the value returned by\r
+ compressBound(sourceLen). Upon exit, destLen is the actual size of the\r
+ compressed buffer.\r
+\r
+ compress returns Z_OK if success, Z_MEM_ERROR if there was not\r
+ enough memory, Z_BUF_ERROR if there was not enough room in the output\r
+ buffer.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,\r
+ const Bytef *source, uLong sourceLen,\r
+ int level));\r
+/*\r
+ Compresses the source buffer into the destination buffer. The level\r
+ parameter has the same meaning as in deflateInit. sourceLen is the byte\r
+ length of the source buffer. Upon entry, destLen is the total size of the\r
+ destination buffer, which must be at least the value returned by\r
+ compressBound(sourceLen). Upon exit, destLen is the actual size of the\r
+ compressed buffer.\r
+\r
+ compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough\r
+ memory, Z_BUF_ERROR if there was not enough room in the output buffer,\r
+ Z_STREAM_ERROR if the level parameter is invalid.\r
+*/\r
+\r
+ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen));\r
+/*\r
+ compressBound() returns an upper bound on the compressed size after\r
+ compress() or compress2() on sourceLen bytes. It would be used before a\r
+ compress() or compress2() call to allocate the destination buffer.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,\r
+ const Bytef *source, uLong sourceLen));\r
+/*\r
+ Decompresses the source buffer into the destination buffer. sourceLen is\r
+ the byte length of the source buffer. Upon entry, destLen is the total size\r
+ of the destination buffer, which must be large enough to hold the entire\r
+ uncompressed data. (The size of the uncompressed data must have been saved\r
+ previously by the compressor and transmitted to the decompressor by some\r
+ mechanism outside the scope of this compression library.) Upon exit, destLen\r
+ is the actual size of the uncompressed buffer.\r
+\r
+ uncompress returns Z_OK if success, Z_MEM_ERROR if there was not\r
+ enough memory, Z_BUF_ERROR if there was not enough room in the output\r
+ buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete.\r
+*/\r
+\r
+\r
+ /* gzip file access functions */\r
+\r
+/*\r
+ This library supports reading and writing files in gzip (.gz) format with\r
+ an interface similar to that of stdio, using the functions that start with\r
+ "gz". The gzip format is different from the zlib format. gzip is a gzip\r
+ wrapper, documented in RFC 1952, wrapped around a deflate stream.\r
+*/\r
+\r
+typedef voidp gzFile; /* opaque gzip file descriptor */\r
+\r
+/*\r
+ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));\r
+\r
+ Opens a gzip (.gz) file for reading or writing. The mode parameter is as\r
+ in fopen ("rb" or "wb") but can also include a compression level ("wb9") or\r
+ a strategy: 'f' for filtered data as in "wb6f", 'h' for Huffman-only\r
+ compression as in "wb1h", 'R' for run-length encoding as in "wb1R", or 'F'\r
+ for fixed code compression as in "wb9F". (See the description of\r
+ deflateInit2 for more information about the strategy parameter.) Also "a"\r
+ can be used instead of "w" to request that the gzip stream that will be\r
+ written be appended to the file. "+" will result in an error, since reading\r
+ and writing to the same gzip file is not supported.\r
+\r
+ gzopen can be used to read a file which is not in gzip format; in this\r
+ case gzread will directly read from the file without decompression.\r
+\r
+ gzopen returns NULL if the file could not be opened, if there was\r
+ insufficient memory to allocate the gzFile state, or if an invalid mode was\r
+ specified (an 'r', 'w', or 'a' was not provided, or '+' was provided).\r
+ errno can be checked to determine if the reason gzopen failed was that the\r
+ file could not be opened.\r
+*/\r
+\r
+ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));\r
+/*\r
+ gzdopen associates a gzFile with the file descriptor fd. File descriptors\r
+ are obtained from calls like open, dup, creat, pipe or fileno (if the file\r
+ has been previously opened with fopen). The mode parameter is as in gzopen.\r
+\r
+ The next call of gzclose on the returned gzFile will also close the file\r
+ descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor\r
+ fd. If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd,\r
+ mode);. The duplicated descriptor should be saved to avoid a leak, since\r
+ gzdopen does not close fd if it fails.\r
+\r
+ gzdopen returns NULL if there was insufficient memory to allocate the\r
+ gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not\r
+ provided, or '+' was provided), or if fd is -1. The file descriptor is not\r
+ used until the next gz* read, write, seek, or close operation, so gzdopen\r
+ will not detect if fd is invalid (unless fd is -1).\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzbuffer OF((gzFile file, unsigned size));\r
+/*\r
+ Set the internal buffer size used by this library's functions. The\r
+ default buffer size is 8192 bytes. This function must be called after\r
+ gzopen() or gzdopen(), and before any other calls that read or write the\r
+ file. The buffer memory allocation is always deferred to the first read or\r
+ write. Two buffers are allocated, either both of the specified size when\r
+ writing, or one of the specified size and the other twice that size when\r
+ reading. A larger buffer size of, for example, 64K or 128K bytes will\r
+ noticeably increase the speed of decompression (reading).\r
+\r
+ The new buffer size also affects the maximum length for gzprintf().\r
+\r
+ gzbuffer() returns 0 on success, or -1 on failure, such as being called\r
+ too late.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));\r
+/*\r
+ Dynamically update the compression level or strategy. See the description\r
+ of deflateInit2 for the meaning of these parameters.\r
+\r
+ gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not\r
+ opened for writing.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));\r
+/*\r
+ Reads the given number of uncompressed bytes from the compressed file. If\r
+ the input file was not in gzip format, gzread copies the given number of\r
+ bytes into the buffer.\r
+\r
+ After reaching the end of a gzip stream in the input, gzread will continue\r
+ to read, looking for another gzip stream, or failing that, reading the rest\r
+ of the input file directly without decompression. The entire input file\r
+ will be read if gzread is called until it returns less than the requested\r
+ len.\r
+\r
+ gzread returns the number of uncompressed bytes actually read, less than\r
+ len for end of file, or -1 for error.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzwrite OF((gzFile file,\r
+ voidpc buf, unsigned len));\r
+/*\r
+ Writes the given number of uncompressed bytes into the compressed file.\r
+ gzwrite returns the number of uncompressed bytes written or 0 in case of\r
+ error.\r
+*/\r
+\r
+ZEXTERN int ZEXPORTVA gzprintf OF((gzFile file, const char *format, ...));\r
+/*\r
+ Converts, formats, and writes the arguments to the compressed file under\r
+ control of the format string, as in fprintf. gzprintf returns the number of\r
+ uncompressed bytes actually written, or 0 in case of error. The number of\r
+ uncompressed bytes written is limited to 8191, or one less than the buffer\r
+ size given to gzbuffer(). The caller should assure that this limit is not\r
+ exceeded. If it is exceeded, then gzprintf() will return an error (0) with\r
+ nothing written. In this case, there may also be a buffer overflow with\r
+ unpredictable consequences, which is possible only if zlib was compiled with\r
+ the insecure functions sprintf() or vsprintf() because the secure snprintf()\r
+ or vsnprintf() functions were not available. This can be determined using\r
+ zlibCompileFlags().\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));\r
+/*\r
+ Writes the given null-terminated string to the compressed file, excluding\r
+ the terminating null character.\r
+\r
+ gzputs returns the number of characters written, or -1 in case of error.\r
+*/\r
+\r
+ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));\r
+/*\r
+ Reads bytes from the compressed file until len-1 characters are read, or a\r
+ newline character is read and transferred to buf, or an end-of-file\r
+ condition is encountered. If any characters are read or if len == 1, the\r
+ string is terminated with a null character. If no characters are read due\r
+ to an end-of-file or len < 1, then the buffer is left untouched.\r
+\r
+ gzgets returns buf which is a null-terminated string, or it returns NULL\r
+ for end-of-file or in case of error. If there was an error, the contents at\r
+ buf are indeterminate.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));\r
+/*\r
+ Writes c, converted to an unsigned char, into the compressed file. gzputc\r
+ returns the value that was written, or -1 in case of error.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzgetc OF((gzFile file));\r
+/*\r
+ Reads one byte from the compressed file. gzgetc returns this byte or -1\r
+ in case of end of file or error.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));\r
+/*\r
+ Push one character back onto the stream to be read as the first character\r
+ on the next read. At least one character of push-back is allowed.\r
+ gzungetc() returns the character pushed, or -1 on failure. gzungetc() will\r
+ fail if c is -1, and may fail if a character has been pushed but not read\r
+ yet. If gzungetc is used immediately after gzopen or gzdopen, at least the\r
+ output buffer size of pushed characters is allowed. (See gzbuffer above.)\r
+ The pushed character will be discarded if the stream is repositioned with\r
+ gzseek() or gzrewind().\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));\r
+/*\r
+ Flushes all pending output into the compressed file. The parameter flush\r
+ is as in the deflate() function. The return value is the zlib error number\r
+ (see function gzerror below). gzflush is only permitted when writing.\r
+\r
+ If the flush parameter is Z_FINISH, the remaining data is written and the\r
+ gzip stream is completed in the output. If gzwrite() is called again, a new\r
+ gzip stream will be started in the output. gzread() is able to read such\r
+ concatented gzip streams.\r
+\r
+ gzflush should be called only when strictly necessary because it will\r
+ degrade compression if called too often.\r
+*/\r
+\r
+/*\r
+ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,\r
+ z_off_t offset, int whence));\r
+\r
+ Sets the starting position for the next gzread or gzwrite on the given\r
+ compressed file. The offset represents a number of bytes in the\r
+ uncompressed data stream. The whence parameter is defined as in lseek(2);\r
+ the value SEEK_END is not supported.\r
+\r
+ If the file is opened for reading, this function is emulated but can be\r
+ extremely slow. If the file is opened for writing, only forward seeks are\r
+ supported; gzseek then compresses a sequence of zeroes up to the new\r
+ starting position.\r
+\r
+ gzseek returns the resulting offset location as measured in bytes from\r
+ the beginning of the uncompressed stream, or -1 in case of error, in\r
+ particular if the file is opened for writing and the new starting position\r
+ would be before the current position.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzrewind OF((gzFile file));\r
+/*\r
+ Rewinds the given file. This function is supported only for reading.\r
+\r
+ gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)\r
+*/\r
+\r
+/*\r
+ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file));\r
+\r
+ Returns the starting position for the next gzread or gzwrite on the given\r
+ compressed file. This position represents a number of bytes in the\r
+ uncompressed data stream, and is zero when starting, even if appending or\r
+ reading a gzip stream from the middle of a file using gzdopen().\r
+\r
+ gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)\r
+*/\r
+\r
+/*\r
+ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile file));\r
+\r
+ Returns the current offset in the file being read or written. This offset\r
+ includes the count of bytes that precede the gzip stream, for example when\r
+ appending or when using gzdopen() for reading. When reading, the offset\r
+ does not include as yet unused buffered input. This information can be used\r
+ for a progress indicator. On error, gzoffset() returns -1.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzeof OF((gzFile file));\r
+/*\r
+ Returns true (1) if the end-of-file indicator has been set while reading,\r
+ false (0) otherwise. Note that the end-of-file indicator is set only if the\r
+ read tried to go past the end of the input, but came up short. Therefore,\r
+ just like feof(), gzeof() may return false even if there is no more data to\r
+ read, in the event that the last read request was for the exact number of\r
+ bytes remaining in the input file. This will happen if the input file size\r
+ is an exact multiple of the buffer size.\r
+\r
+ If gzeof() returns true, then the read functions will return no more data,\r
+ unless the end-of-file indicator is reset by gzclearerr() and the input file\r
+ has grown since the previous end of file was detected.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzdirect OF((gzFile file));\r
+/*\r
+ Returns true (1) if file is being copied directly while reading, or false\r
+ (0) if file is a gzip stream being decompressed. This state can change from\r
+ false to true while reading the input file if the end of a gzip stream is\r
+ reached, but is followed by data that is not another gzip stream.\r
+\r
+ If the input file is empty, gzdirect() will return true, since the input\r
+ does not contain a gzip stream.\r
+\r
+ If gzdirect() is used immediately after gzopen() or gzdopen() it will\r
+ cause buffers to be allocated to allow reading the file to determine if it\r
+ is a gzip file. Therefore if gzbuffer() is used, it should be called before\r
+ gzdirect().\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzclose OF((gzFile file));\r
+/*\r
+ Flushes all pending output if necessary, closes the compressed file and\r
+ deallocates the (de)compression state. Note that once file is closed, you\r
+ cannot call gzerror with file, since its structures have been deallocated.\r
+ gzclose must not be called more than once on the same file, just as free\r
+ must not be called more than once on the same allocation.\r
+\r
+ gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a\r
+ file operation error, or Z_OK on success.\r
+*/\r
+\r
+ZEXTERN int ZEXPORT gzclose_r OF((gzFile file));\r
+ZEXTERN int ZEXPORT gzclose_w OF((gzFile file));\r
+/*\r
+ Same as gzclose(), but gzclose_r() is only for use when reading, and\r
+ gzclose_w() is only for use when writing or appending. The advantage to\r
+ using these instead of gzclose() is that they avoid linking in zlib\r
+ compression or decompression code that is not used when only reading or only\r
+ writing respectively. If gzclose() is used, then both compression and\r
+ decompression code will be included the application when linking to a static\r
+ zlib library.\r
+*/\r
+\r
+ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));\r
+/*\r
+ Returns the error message for the last error which occurred on the given\r
+ compressed file. errnum is set to zlib error number. If an error occurred\r
+ in the file system and not in the compression library, errnum is set to\r
+ Z_ERRNO and the application may consult errno to get the exact error code.\r
+\r
+ The application must not modify the returned string. Future calls to\r
+ this function may invalidate the previously returned string. If file is\r
+ closed, then the string previously returned by gzerror will no longer be\r
+ available.\r
+\r
+ gzerror() should be used to distinguish errors from end-of-file for those\r
+ functions above that do not distinguish those cases in their return values.\r
+*/\r
+\r
+ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));\r
+/*\r
+ Clears the error and end-of-file flags for file. This is analogous to the\r
+ clearerr() function in stdio. This is useful for continuing to read a gzip\r
+ file that is being written concurrently.\r
+*/\r
+\r
+\r
+ /* checksum functions */\r
+\r
+/*\r
+ These functions are not related to compression but are exported\r
+ anyway because they might be useful in applications using the compression\r
+ library.\r
+*/\r
+\r
+ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));\r
+/*\r
+ Update a running Adler-32 checksum with the bytes buf[0..len-1] and\r
+ return the updated checksum. If buf is Z_NULL, this function returns the\r
+ required initial value for the checksum.\r
+\r
+ An Adler-32 checksum is almost as reliable as a CRC32 but can be computed\r
+ much faster.\r
+\r
+ Usage example:\r
+\r
+ uLong adler = adler32(0L, Z_NULL, 0);\r
+\r
+ while (read_buffer(buffer, length) != EOF) {\r
+ adler = adler32(adler, buffer, length);\r
+ }\r
+ if (adler != original_adler) error();\r
+*/\r
+\r
+/*\r
+ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,\r
+ z_off_t len2));\r
+\r
+ Combine two Adler-32 checksums into one. For two sequences of bytes, seq1\r
+ and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for\r
+ each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of\r
+ seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.\r
+*/\r
+\r
+ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));\r
+/*\r
+ Update a running CRC-32 with the bytes buf[0..len-1] and return the\r
+ updated CRC-32. If buf is Z_NULL, this function returns the required\r
+ initial value for the for the crc. Pre- and post-conditioning (one's\r
+ complement) is performed within this function so it shouldn't be done by the\r
+ application.\r
+\r
+ Usage example:\r
+\r
+ uLong crc = crc32(0L, Z_NULL, 0);\r
+\r
+ while (read_buffer(buffer, length) != EOF) {\r
+ crc = crc32(crc, buffer, length);\r
+ }\r
+ if (crc != original_crc) error();\r
+*/\r
+\r
+/*\r
+ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));\r
+\r
+ Combine two CRC-32 check values into one. For two sequences of bytes,\r
+ seq1 and seq2 with lengths len1 and len2, CRC-32 check values were\r
+ calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32\r
+ check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and\r
+ len2.\r
+*/\r
+\r
+\r
+ /* various hacks, don't look :) */\r
+\r
+/* deflateInit and inflateInit are macros to allow checking the zlib version\r
+ * and the compiler's view of z_stream:\r
+ */\r
+ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,\r
+ const char *version, int stream_size));\r
+ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,\r
+ const char *version, int stream_size));\r
+ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,\r
+ int windowBits, int memLevel,\r
+ int strategy, const char *version,\r
+ int stream_size));\r
+ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,\r
+ const char *version, int stream_size));\r
+ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,\r
+ unsigned char FAR *window,\r
+ const char *version,\r
+ int stream_size));\r
+#define deflateInit(strm, level) \\r
+ deflateInit_((strm), (level), ZLIB_VERSION, sizeof(z_stream))\r
+#define inflateInit(strm) \\r
+ inflateInit_((strm), ZLIB_VERSION, sizeof(z_stream))\r
+#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \\r
+ deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\\r
+ (strategy), ZLIB_VERSION, sizeof(z_stream))\r
+#define inflateInit2(strm, windowBits) \\r
+ inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))\r
+#define inflateBackInit(strm, windowBits, window) \\r
+ inflateBackInit_((strm), (windowBits), (window), \\r
+ ZLIB_VERSION, sizeof(z_stream))\r
+\r
+/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or\r
+ * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if\r
+ * both are true, the application gets the *64 functions, and the regular\r
+ * functions are changed to 64 bits) -- in case these are set on systems\r
+ * without large file support, _LFS64_LARGEFILE must also be true\r
+ */\r
+#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0\r
+ ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));\r
+ ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));\r
+ ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));\r
+ ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));\r
+ ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));\r
+ ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));\r
+#endif\r
+\r
+#if !defined(ZLIB_INTERNAL) && _FILE_OFFSET_BITS-0 == 64 && _LFS64_LARGEFILE-0\r
+# define gzopen gzopen64\r
+# define gzseek gzseek64\r
+# define gztell gztell64\r
+# define gzoffset gzoffset64\r
+# define adler32_combine adler32_combine64\r
+# define crc32_combine crc32_combine64\r
+# ifdef _LARGEFILE64_SOURCE\r
+ ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));\r
+ ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int));\r
+ ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));\r
+ ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile));\r
+ ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));\r
+ ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));\r
+# endif\r
+#else\r
+ ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *));\r
+ ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile, z_off_t, int));\r
+ ZEXTERN z_off_t ZEXPORT gztell OF((gzFile));\r
+ ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile));\r
+ ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));\r
+ ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));\r
+#endif\r
+\r
+/* hack for buggy compilers */\r
+#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)\r
+ struct internal_state {int dummy;};\r
+#endif\r
+\r
+/* undocumented functions */\r
+ZEXTERN const char * ZEXPORT zError OF((int));\r
+ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp));\r
+ZEXTERN const uLongf * ZEXPORT get_crc_table OF((void));\r
+ZEXTERN int ZEXPORT inflateUndermine OF((z_streamp, int));\r
+\r
+#ifdef __cplusplus\r
+}\r
+#endif\r
+\r
+#endif /* ZLIB_H */\r
--- /dev/null
+/* zutil.c -- target dependent utility functions for the compression library\r
+ * Copyright (C) 1995-2005, 2010 Jean-loup Gailly.\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+#include "zutil.h"\r
+\r
+#ifndef NO_DUMMY_DECL\r
+struct internal_state {int dummy;}; /* for buggy compilers */\r
+#endif\r
+\r
+const char * const z_errmsg[10] = {\r
+"need dictionary", /* Z_NEED_DICT 2 */\r
+"stream end", /* Z_STREAM_END 1 */\r
+"", /* Z_OK 0 */\r
+"file error", /* Z_ERRNO (-1) */\r
+"stream error", /* Z_STREAM_ERROR (-2) */\r
+"data error", /* Z_DATA_ERROR (-3) */\r
+"insufficient memory", /* Z_MEM_ERROR (-4) */\r
+"buffer error", /* Z_BUF_ERROR (-5) */\r
+"incompatible version",/* Z_VERSION_ERROR (-6) */\r
+""};\r
+\r
+\r
+const char * ZEXPORT zlibVersion()\r
+{\r
+ return ZLIB_VERSION;\r
+}\r
+\r
+uLong ZEXPORT zlibCompileFlags()\r
+{\r
+ uLong flags;\r
+\r
+ flags = 0;\r
+ switch ((int)(sizeof(uInt))) {\r
+ case 2: break;\r
+ case 4: flags += 1; break;\r
+ case 8: flags += 2; break;\r
+ default: flags += 3;\r
+ }\r
+ switch ((int)(sizeof(uLong))) {\r
+ case 2: break;\r
+ case 4: flags += 1 << 2; break;\r
+ case 8: flags += 2 << 2; break;\r
+ default: flags += 3 << 2;\r
+ }\r
+ switch ((int)(sizeof(voidpf))) {\r
+ case 2: break;\r
+ case 4: flags += 1 << 4; break;\r
+ case 8: flags += 2 << 4; break;\r
+ default: flags += 3 << 4;\r
+ }\r
+ switch ((int)(sizeof(z_off_t))) {\r
+ case 2: break;\r
+ case 4: flags += 1 << 6; break;\r
+ case 8: flags += 2 << 6; break;\r
+ default: flags += 3 << 6;\r
+ }\r
+#ifdef DEBUG\r
+ flags += 1 << 8;\r
+#endif\r
+#if defined(ASMV) || defined(ASMINF)\r
+ flags += 1 << 9;\r
+#endif\r
+#ifdef ZLIB_WINAPI\r
+ flags += 1 << 10;\r
+#endif\r
+#ifdef BUILDFIXED\r
+ flags += 1 << 12;\r
+#endif\r
+#ifdef DYNAMIC_CRC_TABLE\r
+ flags += 1 << 13;\r
+#endif\r
+#ifdef NO_GZCOMPRESS\r
+ flags += 1L << 16;\r
+#endif\r
+#ifdef NO_GZIP\r
+ flags += 1L << 17;\r
+#endif\r
+#ifdef PKZIP_BUG_WORKAROUND\r
+ flags += 1L << 20;\r
+#endif\r
+#ifdef FASTEST\r
+ flags += 1L << 21;\r
+#endif\r
+#ifdef STDC\r
+# ifdef NO_vsnprintf\r
+ flags += 1L << 25;\r
+# ifdef HAS_vsprintf_void\r
+ flags += 1L << 26;\r
+# endif\r
+# else\r
+# ifdef HAS_vsnprintf_void\r
+ flags += 1L << 26;\r
+# endif\r
+# endif\r
+#else\r
+ flags += 1L << 24;\r
+# ifdef NO_snprintf\r
+ flags += 1L << 25;\r
+# ifdef HAS_sprintf_void\r
+ flags += 1L << 26;\r
+# endif\r
+# else\r
+# ifdef HAS_snprintf_void\r
+ flags += 1L << 26;\r
+# endif\r
+# endif\r
+#endif\r
+ return flags;\r
+}\r
+\r
+#ifdef DEBUG\r
+\r
+# ifndef verbose\r
+# define verbose 0\r
+# endif\r
+int ZLIB_INTERNAL z_verbose = verbose;\r
+\r
+void ZLIB_INTERNAL z_error (m)\r
+ char *m;\r
+{\r
+ fprintf(stderr, "%s\n", m);\r
+ exit(1);\r
+}\r
+#endif\r
+\r
+/* exported to allow conversion of error code to string for compress() and\r
+ * uncompress()\r
+ */\r
+const char * ZEXPORT zError(err)\r
+ int err;\r
+{\r
+ return ERR_MSG(err);\r
+}\r
+\r
+#if defined(_WIN32_WCE)\r
+ /* The Microsoft C Run-Time Library for Windows CE doesn't have\r
+ * errno. We define it as a global variable to simplify porting.\r
+ * Its value is always 0 and should not be used.\r
+ */\r
+ int errno = 0;\r
+#endif\r
+\r
+#ifndef HAVE_MEMCPY\r
+\r
+void ZLIB_INTERNAL zmemcpy(dest, source, len)\r
+ Bytef* dest;\r
+ const Bytef* source;\r
+ uInt len;\r
+{\r
+ if (len == 0) return;\r
+ do {\r
+ *dest++ = *source++; /* ??? to be unrolled */\r
+ } while (--len != 0);\r
+}\r
+\r
+int ZLIB_INTERNAL zmemcmp(s1, s2, len)\r
+ const Bytef* s1;\r
+ const Bytef* s2;\r
+ uInt len;\r
+{\r
+ uInt j;\r
+\r
+ for (j = 0; j < len; j++) {\r
+ if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1;\r
+ }\r
+ return 0;\r
+}\r
+\r
+void ZLIB_INTERNAL zmemzero(dest, len)\r
+ Bytef* dest;\r
+ uInt len;\r
+{\r
+ if (len == 0) return;\r
+ do {\r
+ *dest++ = 0; /* ??? to be unrolled */\r
+ } while (--len != 0);\r
+}\r
+#endif\r
+\r
+\r
+#ifdef SYS16BIT\r
+\r
+#ifdef __TURBOC__\r
+/* Turbo C in 16-bit mode */\r
+\r
+# define MY_ZCALLOC\r
+\r
+/* Turbo C malloc() does not allow dynamic allocation of 64K bytes\r
+ * and farmalloc(64K) returns a pointer with an offset of 8, so we\r
+ * must fix the pointer. Warning: the pointer must be put back to its\r
+ * original form in order to free it, use zcfree().\r
+ */\r
+\r
+#define MAX_PTR 10\r
+/* 10*64K = 640K */\r
+\r
+local int next_ptr = 0;\r
+\r
+typedef struct ptr_table_s {\r
+ voidpf org_ptr;\r
+ voidpf new_ptr;\r
+} ptr_table;\r
+\r
+local ptr_table table[MAX_PTR];\r
+/* This table is used to remember the original form of pointers\r
+ * to large buffers (64K). Such pointers are normalized with a zero offset.\r
+ * Since MSDOS is not a preemptive multitasking OS, this table is not\r
+ * protected from concurrent access. This hack doesn't work anyway on\r
+ * a protected system like OS/2. Use Microsoft C instead.\r
+ */\r
+\r
+voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size)\r
+{\r
+ voidpf buf = opaque; /* just to make some compilers happy */\r
+ ulg bsize = (ulg)items*size;\r
+\r
+ /* If we allocate less than 65520 bytes, we assume that farmalloc\r
+ * will return a usable pointer which doesn't have to be normalized.\r
+ */\r
+ if (bsize < 65520L) {\r
+ buf = farmalloc(bsize);\r
+ if (*(ush*)&buf != 0) return buf;\r
+ } else {\r
+ buf = farmalloc(bsize + 16L);\r
+ }\r
+ if (buf == NULL || next_ptr >= MAX_PTR) return NULL;\r
+ table[next_ptr].org_ptr = buf;\r
+\r
+ /* Normalize the pointer to seg:0 */\r
+ *((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4;\r
+ *(ush*)&buf = 0;\r
+ table[next_ptr++].new_ptr = buf;\r
+ return buf;\r
+}\r
+\r
+void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)\r
+{\r
+ int n;\r
+ if (*(ush*)&ptr != 0) { /* object < 64K */\r
+ farfree(ptr);\r
+ return;\r
+ }\r
+ /* Find the original pointer */\r
+ for (n = 0; n < next_ptr; n++) {\r
+ if (ptr != table[n].new_ptr) continue;\r
+\r
+ farfree(table[n].org_ptr);\r
+ while (++n < next_ptr) {\r
+ table[n-1] = table[n];\r
+ }\r
+ next_ptr--;\r
+ return;\r
+ }\r
+ ptr = opaque; /* just to make some compilers happy */\r
+ Assert(0, "zcfree: ptr not found");\r
+}\r
+\r
+#endif /* __TURBOC__ */\r
+\r
+\r
+#ifdef M_I86\r
+/* Microsoft C in 16-bit mode */\r
+\r
+# define MY_ZCALLOC\r
+\r
+#if (!defined(_MSC_VER) || (_MSC_VER <= 600))\r
+# define _halloc halloc\r
+# define _hfree hfree\r
+#endif\r
+\r
+voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size)\r
+{\r
+ if (opaque) opaque = 0; /* to make compiler happy */\r
+ return _halloc((long)items, size);\r
+}\r
+\r
+void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)\r
+{\r
+ if (opaque) opaque = 0; /* to make compiler happy */\r
+ _hfree(ptr);\r
+}\r
+\r
+#endif /* M_I86 */\r
+\r
+#endif /* SYS16BIT */\r
+\r
+\r
+#ifndef MY_ZCALLOC /* Any system without a special alloc function */\r
+\r
+#ifndef STDC\r
+extern voidp malloc OF((uInt size));\r
+extern voidp calloc OF((uInt items, uInt size));\r
+extern void free OF((voidpf ptr));\r
+#endif\r
+\r
+voidpf ZLIB_INTERNAL zcalloc (opaque, items, size)\r
+ voidpf opaque;\r
+ unsigned items;\r
+ unsigned size;\r
+{\r
+ if (opaque) items += size - size; /* make compiler happy */\r
+ return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :\r
+ (voidpf)calloc(items, size);\r
+}\r
+\r
+void ZLIB_INTERNAL zcfree (opaque, ptr)\r
+ voidpf opaque;\r
+ voidpf ptr;\r
+{\r
+ free(ptr);\r
+ if (opaque) return; /* make compiler happy */\r
+}\r
+\r
+#endif /* MY_ZCALLOC */\r
--- /dev/null
+/* zutil.h -- internal interface and configuration of the compression library\r
+ * Copyright (C) 1995-2010 Jean-loup Gailly.\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/* WARNING: this file should *not* be used by applications. It is\r
+ part of the implementation of the compression library and is\r
+ subject to change. Applications should only use zlib.h.\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+#ifndef ZUTIL_H\r
+#define ZUTIL_H\r
+\r
+#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ)\r
+# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))\r
+#else\r
+# define ZLIB_INTERNAL\r
+#endif\r
+\r
+#include "zlib.h"\r
+\r
+#ifdef STDC\r
+# if !(defined(_WIN32_WCE) && defined(_MSC_VER))\r
+# include <stddef.h>\r
+# endif\r
+# include <string.h>\r
+# include <stdlib.h>\r
+#endif\r
+\r
+#ifndef local\r
+# define local static\r
+#endif\r
+/* compile with -Dlocal if your debugger can't find static symbols */\r
+\r
+typedef unsigned char uch;\r
+typedef uch FAR uchf;\r
+typedef unsigned short ush;\r
+typedef ush FAR ushf;\r
+typedef unsigned long ulg;\r
+\r
+extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */\r
+/* (size given to avoid silly warnings with Visual C++) */\r
+\r
+#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]\r
+\r
+#define ERR_RETURN(strm,err) \\r
+ return (strm->msg = (char*)ERR_MSG(err), (err))\r
+/* To be used only when the state is known to be valid */\r
+\r
+ /* common constants */\r
+\r
+#ifndef DEF_WBITS\r
+# define DEF_WBITS MAX_WBITS\r
+#endif\r
+/* default windowBits for decompression. MAX_WBITS is for compression only */\r
+\r
+#if MAX_MEM_LEVEL >= 8\r
+# define DEF_MEM_LEVEL 8\r
+#else\r
+# define DEF_MEM_LEVEL MAX_MEM_LEVEL\r
+#endif\r
+/* default memLevel */\r
+\r
+#define STORED_BLOCK 0\r
+#define STATIC_TREES 1\r
+#define DYN_TREES 2\r
+/* The three kinds of block type */\r
+\r
+#define MIN_MATCH 3\r
+#define MAX_MATCH 258\r
+/* The minimum and maximum match lengths */\r
+\r
+#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */\r
+\r
+ /* target dependencies */\r
+\r
+#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))\r
+# define OS_CODE 0x00\r
+# if defined(__TURBOC__) || defined(__BORLANDC__)\r
+# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))\r
+ /* Allow compilation with ANSI keywords only enabled */\r
+ void _Cdecl farfree( void *block );\r
+ void *_Cdecl farmalloc( unsigned long nbytes );\r
+# else\r
+# include <alloc.h>\r
+# endif\r
+# else /* MSC or DJGPP */\r
+# include <malloc.h>\r
+# endif\r
+#endif\r
+\r
+#ifdef AMIGA\r
+# define OS_CODE 0x01\r
+#endif\r
+\r
+#if defined(VAXC) || defined(VMS)\r
+# define OS_CODE 0x02\r
+# define F_OPEN(name, mode) \\r
+ fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")\r
+#endif\r
+\r
+#if defined(ATARI) || defined(atarist)\r
+# define OS_CODE 0x05\r
+#endif\r
+\r
+#ifdef OS2\r
+# define OS_CODE 0x06\r
+# ifdef M_I86\r
+# include <malloc.h>\r
+# endif\r
+#endif\r
+\r
+#if defined(MACOS) || defined(TARGET_OS_MAC)\r
+# define OS_CODE 0x07\r
+# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os\r
+# include <unix.h> /* for fdopen */\r
+# else\r
+# ifndef fdopen\r
+# define fdopen(fd,mode) NULL /* No fdopen() */\r
+# endif\r
+# endif\r
+#endif\r
+\r
+#ifdef TOPS20\r
+# define OS_CODE 0x0a\r
+#endif\r
+\r
+#ifdef WIN32\r
+# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */\r
+# define OS_CODE 0x0b\r
+# endif\r
+#endif\r
+\r
+#ifdef __50SERIES /* Prime/PRIMOS */\r
+# define OS_CODE 0x0f\r
+#endif\r
+\r
+#if defined(_BEOS_) || defined(RISCOS)\r
+# define fdopen(fd,mode) NULL /* No fdopen() */\r
+#endif\r
+\r
+#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX\r
+# if defined(_WIN32_WCE)\r
+# define fdopen(fd,mode) NULL /* No fdopen() */\r
+# ifndef _PTRDIFF_T_DEFINED\r
+ typedef int ptrdiff_t;\r
+# define _PTRDIFF_T_DEFINED\r
+# endif\r
+# else\r
+# define fdopen(fd,type) _fdopen(fd,type)\r
+# endif\r
+#endif\r
+\r
+#if defined(__BORLANDC__)\r
+ #pragma warn -8004\r
+ #pragma warn -8008\r
+ #pragma warn -8066\r
+#endif\r
+\r
+/* provide prototypes for these when building zlib without LFS */\r
+#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0\r
+ ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));\r
+ ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));\r
+#endif\r
+\r
+ /* common defaults */\r
+\r
+#ifndef OS_CODE\r
+# define OS_CODE 0x03 /* assume Unix */\r
+#endif\r
+\r
+#ifndef F_OPEN\r
+# define F_OPEN(name, mode) fopen((name), (mode))\r
+#endif\r
+\r
+ /* functions */\r
+\r
+#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)\r
+# ifndef HAVE_VSNPRINTF\r
+# define HAVE_VSNPRINTF\r
+# endif\r
+#endif\r
+#if defined(__CYGWIN__)\r
+# ifndef HAVE_VSNPRINTF\r
+# define HAVE_VSNPRINTF\r
+# endif\r
+#endif\r
+#ifndef HAVE_VSNPRINTF\r
+# ifdef MSDOS\r
+ /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),\r
+ but for now we just assume it doesn't. */\r
+# define NO_vsnprintf\r
+# endif\r
+# ifdef __TURBOC__\r
+# define NO_vsnprintf\r
+# endif\r
+# ifdef WIN32\r
+ /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */\r
+# if !defined(vsnprintf) && !defined(NO_vsnprintf)\r
+# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )\r
+# define vsnprintf _vsnprintf\r
+# endif\r
+# endif\r
+# endif\r
+# ifdef __SASC\r
+# define NO_vsnprintf\r
+# endif\r
+#endif\r
+#ifdef VMS\r
+# define NO_vsnprintf\r
+#endif\r
+\r
+#if defined(pyr)\r
+# define NO_MEMCPY\r
+#endif\r
+#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)\r
+ /* Use our own functions for small and medium model with MSC <= 5.0.\r
+ * You may have to use the same strategy for Borland C (untested).\r
+ * The __SC__ check is for Symantec.\r
+ */\r
+# define NO_MEMCPY\r
+#endif\r
+#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)\r
+# define HAVE_MEMCPY\r
+#endif\r
+#ifdef HAVE_MEMCPY\r
+# ifdef SMALL_MEDIUM /* MSDOS small or medium model */\r
+# define zmemcpy _fmemcpy\r
+# define zmemcmp _fmemcmp\r
+# define zmemzero(dest, len) _fmemset(dest, 0, len)\r
+# else\r
+# define zmemcpy memcpy\r
+# define zmemcmp memcmp\r
+# define zmemzero(dest, len) memset(dest, 0, len)\r
+# endif\r
+#else\r
+ void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));\r
+ int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));\r
+ void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));\r
+#endif\r
+\r
+/* Diagnostic functions */\r
+#ifdef DEBUG\r
+# include <stdio.h>\r
+ extern int ZLIB_INTERNAL z_verbose;\r
+ extern void ZLIB_INTERNAL z_error OF((char *m));\r
+# define Assert(cond,msg) {if(!(cond)) z_error(msg);}\r
+# define Trace(x) {if (z_verbose>=0) fprintf x ;}\r
+# define Tracev(x) {if (z_verbose>0) fprintf x ;}\r
+# define Tracevv(x) {if (z_verbose>1) fprintf x ;}\r
+# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}\r
+# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}\r
+#else\r
+# define Assert(cond,msg)\r
+# define Trace(x)\r
+# define Tracev(x)\r
+# define Tracevv(x)\r
+# define Tracec(c,x)\r
+# define Tracecv(c,x)\r
+#endif\r
+\r
+\r
+voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,\r
+ unsigned size));\r
+void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));\r
+\r
+#define ZALLOC(strm, items, size) \\r
+ (*((strm)->zalloc))((strm)->opaque, (items), (size))\r
+#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))\r
+#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}\r
+\r
+#endif /* ZUTIL_H */\r
projects / thirdparty / freeswitch.git / commitdiff
