]>
git.ipfire.org Git - thirdparty/squid.git/blob - tools/purge/purge.cc
4 // Author: Jens-S. V?ckler <voeckler@rvs.uni-hannover.de>
9 // (c) 1999 Lehrgebiet Rechnernetze und Verteilte Systeme
10 // Universit?t Hannover, Germany
12 // Permission to use, copy, modify, distribute, and sell this software
13 // and its documentation for any purpose is hereby granted without fee,
14 // provided that (i) the above copyright notices and this permission
15 // notice appear in all copies of the software and related documentation,
16 // and (ii) the names of the Lehrgebiet Rechnernetze und Verteilte
17 // Systeme and the University of Hannover may not be used in any
18 // advertising or publicity relating to the software without the
19 // specific, prior written permission of Lehrgebiet Rechnernetze und
20 // Verteilte Systeme and the University of Hannover.
22 // THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
24 // WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
26 // IN NO EVENT SHALL THE LEHRGEBIET RECHNERNETZE UND VERTEILTE SYSTEME OR
27 // THE UNIVERSITY OF HANNOVER BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
28 // INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES
29 // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT
30 // ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY,
31 // ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
34 // Revision 1.17 2000/09/21 10:59:53 cached
35 // *** empty log message ***
37 // Revision 1.16 2000/09/21 09:45:18 cached
38 // Fixed some small bugs.
40 // Revision 1.15 2000/09/21 09:05:56 cached
41 // added multi cache_dir support, thus changing -c cmdline option.
42 // modified file reading to support /dev/fd/0 reading for non-disclosed items.
44 // Revision 1.14 2000/06/20 09:43:01 voeckler
45 // added FreeBSD related fixes and support.
47 // Revision 1.13 2000/03/29 08:12:21 voeckler
48 // fixed wrong header file.
50 // Revision 1.12 2000/03/29 07:54:41 voeckler
51 // added mechanism to give a port specification precedence over a host
52 // specificiation with the -p option and not colon.
54 // Revision 1.11 1999/06/18 13:18:28 voeckler
55 // added refcount, fixed missing LF in -s output.
57 // Revision 1.10 1999/06/16 13:06:05 voeckler
58 // reversed meaning of -M flag.
60 // Revision 1.9 1999/06/15 21:11:53 voeckler
61 // added extended logging feature which extract the squid meta data available
62 // within the disk files. moved the content extraction and squid meta data
63 // handling parts into separate files. added options for copy-out and verbose.
65 // Revision 1.8 1999/06/14 20:14:46 voeckler
66 // intermediate version when adding understanding about the way
67 // Squid does log the metadata into the file.
69 // Revision 1.7 1999/01/23 21:01:10 root
70 // stumbled over libc5 header/lib inconsistency bug....
72 // Revision 1.6 1999/01/23 20:47:54 root
73 // added Linux specifics for psignal...
76 // Revision 1.5 1999/01/20 09:48:12 voeckler
77 // added warning as first line of output.
79 // Revision 1.4 1999/01/19 11:53:49 voeckler
80 // added psignal() from <siginfo.h> handling.
82 // Revision 1.3 1999/01/19 11:00:50 voeckler
83 // added keyboard interrupt handling, exit handling, removed C++ strings and
84 // regular expression syntax in favour of less source code, added comments,
85 // added a reminder to remove swap.state in case of unlinks, added IAA flag,
86 // added a few assertions, changed policy to enforce the definition of at
87 // least one regular expression, and catch a few signals.
89 // Revision 1.2 1999/01/15 23:06:28 voeckler
90 // downgraded to simple C strings...
92 // Revision 1.1 1999/01/14 12:05:32 voeckler
96 #if (defined(__GNUC__) || defined(__GNUG__)) && !defined(__clang__)
97 #pragma implementation
104 //#include <assert.h>
110 //#include <sys/types.h>
111 #include <sys/stat.h>
112 #include <sys/wait.h>
124 #include <netinet/in.h>
125 #include <netinet/tcp.h> // TCP_NODELAY
126 #include <arpa/inet.h>
127 #include <netdb.h> // gethostbyname()
128 //#include <regex.h> //comes via compat.h
130 #include "convert.hh"
133 #include "squid-tlv.hh"
134 #include "copyout.hh"
135 #include "conffile.hh"
138 #define DEFAULTHOST "localhost"
139 #endif // DEFAULTHOST
142 #define DEFAULTPORT 3128
143 #endif // DEFAULTPORT
145 volatile sig_atomic_t term_flag
= 0; // 'terminate' is a gcc 2.8.x internal...
146 char* linebuffer
= 0;
147 size_t buffersize
= 16834;
148 static char* copydir
= 0;
149 static unsigned debugFlag
= 0;
150 static unsigned purgeMode
= 0;
151 static bool iamalive
= false;
152 static bool reminder
= false;
153 static bool verbose
= false;
154 static bool envelope
= false;
155 static bool no_fork
= false;
156 static const char* programname
= 0;
157 static const char* RCS_ID
= "$Id$";
159 // ----------------------------------------------------------------------
162 REList( const char* what
, bool doCase
);
164 bool match( const char* check
) const;
171 REList::REList( const char* what
, bool doCase
)
172 :next(0),data(xstrdup(what
))
174 int result
= regcomp( &rexp
, what
,
175 REG_EXTENDED
| REG_NOSUB
| (doCase
? 0 : REG_ICASE
) );
178 regerror( result
, &rexp
, buffer
, 256 );
179 fprintf( stderr
, "unable to compile re \"%s\": %s\n", what
, buffer
);
186 if ( next
) delete next
;
187 if ( data
) xfree((void*) data
);
192 REList::match( const char* check
) const
194 int result
= regexec( &rexp
, check
, 0, 0, 0 );
195 if ( result
!= 0 && result
!= REG_NOMATCH
) {
197 regerror( result
, &rexp
, buffer
, 256 );
198 fprintf( stderr
, "unable to execute re \"%s\"\n+ on line \"%s\": %s\n",
199 data
, check
, buffer
);
202 return ( result
== 0 );
205 // ----------------------------------------------------------------------
208 concat( const char* start
, ... )
209 // purpose: concatinate an arbitrary number of C strings.
210 // paramtr: start (IN): first C string
211 // ... (IN): further C strings, terminated with a NULL pointer
212 // returns: memory allocated via new(), containing the concatinated string.
217 // first run: determine size
218 unsigned size
= strlen(start
)+1;
219 va_start( ap
, start
);
220 while ( (s
=va_arg(ap
,const char*)) != NULL
) size
+= strlen(s
? s
: "");
224 char* result
= new char[size
];
226 perror( "string memory allocation" );
230 // second run: copy content
231 strcpy( result
, start
);
232 va_start( ap
, start
);
233 while ( (s
=va_arg(ap
,const char*)) != NULL
) strcat( result
, s
);
240 isxstring( const char* s
, size_t testlen
)
241 // purpose: test a string for conforming to xdigit
242 // paramtr: s (IN): string to test
243 // testlen (IN): length the string must have
244 // returns: true, iff strlen(s)==testlen && all_x_chars(s), false otherwise
246 if ( strlen(s
) != testlen
) return false;
249 while ( i
<testlen
&& isxdigit(s
[i
]) )
256 log_output( const char* fn
, int code
, long size
, const char* url
)
258 return printf( "%s %3d %8ld %s\n", fn
, code
, size
, url
);
263 log_extended( const char* fn
, int code
, long size
, const SquidMetaList
* meta
)
265 static const char hexdigit
[] = "0123456789ABCDEF";
267 const SquidTLV
* findings
= 0;
269 if ( meta
&& (findings
= meta
->search( STORE_META_KEY_MD5
)) ) {
270 unsigned char* s
= (unsigned char*) findings
->data
;
271 for ( int j
=0; j
<16; ++j
, ++s
) {
272 md5
[j
*2+0] = hexdigit
[ *s
>> 4 ];
273 md5
[j
*2+1] = hexdigit
[ *s
& 15 ];
275 md5
[32] = '\0'; // terminate string
277 snprintf( md5
, sizeof(md5
), "%-32s", "(no_md5_data_available)" );
281 if ( meta
&& (findings
= meta
->search( STORE_META_STD
)) ) {
283 // make data aligned, avoid SIGBUS on RISC machines (ARGH!)
284 memcpy( &temp
, findings
->data
, sizeof(StoreMetaStd
) );
285 snprintf( timeb
, sizeof(timeb
), "%08lx %08lx %08lx %08lx %04x %5hu ",
286 (unsigned long)temp
.timestamp
, (unsigned long)temp
.lastref
,
287 (unsigned long)temp
.expires
, (unsigned long)temp
.lastmod
, temp
.flags
, temp
.refcount
);
288 } else if ( meta
&& (findings
= meta
->search( STORE_META_STD_LFS
)) ) {
289 StoreMetaStdLFS temp
;
290 // make data aligned, avoid SIGBUS on RISC machines (ARGH!)
291 memcpy( &temp
, findings
->data
, sizeof(StoreMetaStd
) );
292 snprintf( timeb
, sizeof(timeb
), "%08lx %08lx %08lx %08lx %04x %5hu ",
293 (unsigned long)temp
.timestamp
, (unsigned long)temp
.lastref
,
294 (unsigned long)temp
.expires
, (unsigned long)temp
.lastmod
, temp
.flags
, temp
.refcount
);
296 unsigned long ul
= ULONG_MAX
; // Match type of StoreMetaTLV fields
297 unsigned short hu
= 0; // Match type of StoreMetaTLV refcount fields
298 snprintf( timeb
, sizeof(timeb
), "%08lx %08lx %08lx %08lx %04x %5d ", ul
, ul
, ul
, ul
, 0, hu
);
301 // make sure that there is just one printf()
302 if ( meta
&& (findings
= meta
->search( STORE_META_URL
)) ) {
303 return printf( "%s %3d %8ld %s %s %s\n",
304 fn
, code
, size
, md5
, timeb
, findings
->data
);
306 return printf( "%s %3d %8ld %s %s strange_file\n",
307 fn
, code
, size
, md5
, timeb
);
311 // o.k., this is pure lazyness...
312 static struct in_addr serverHost
;
313 static unsigned short serverPort
;
316 action( int fd
, size_t metasize
,
317 const char* fn
, const char* url
, const SquidMetaList
& meta
)
318 // purpose: if cmdline-requested, send the purge request to the cache
319 // paramtr: fd (IN): open FD for the object file
320 // metasize (IN): offset into data portion of file (meta data size)
321 // fn (IN): name of the object file
322 // url (IN): URL string stored in the object file
323 // meta (IN): list containing further meta data
324 // returns: true for a successful action, false otherwise. The action
325 // may just print the file, send the purge request or even
326 // remove unwanted files.
327 // globals: ::purgeMode (IN): bit#0 set -> send purge request.
328 // bit#1 set -> remove 404 object files.
329 // ::serverHost (IN): cache host address
330 // ::serverPort (IN): cache port number
332 static const char* schablone
= "PURGE %s HTTP/1.0\r\nAccept: */*\r\n\r\n";
334 long size
= ( fstat(fd
,&st
) == -1 ? -1 : long(st
.st_size
- metasize
) );
337 // if we want to copy out the file, do that first of all.
338 if ( ::copydir
&& *copydir
&& size
> 0 )
339 copy_out( st
.st_size
, metasize
, ::debugFlag
,
340 fn
, url
, ::copydir
, ::envelope
);
342 // do we need to PURGE the file, yes, if purgemode bit#0 was set.
343 if ( ::purgeMode
& 0x01 ) {
344 unsigned long bufsize
= strlen(url
) + strlen(schablone
) + 4;
345 char* buffer
= new char[bufsize
];
347 snprintf( buffer
, bufsize
, schablone
, url
);
348 int sockfd
= connectTo( serverHost
, serverPort
, true );
349 if ( sockfd
== -1 ) {
350 fprintf( stderr
, "unable to connect to server: %s\n", strerror(errno
) );
355 int size
= strlen(buffer
);
356 if ( write( sockfd
, buffer
, size
) != size
) {
357 // error while talking to squid
358 fprintf( stderr
, "unable to talk to server: %s\n", strerror(errno
) );
363 memset( buffer
+8, 0, 4 );
364 if ( read( sockfd
, buffer
, bufsize
) < 1 ) {
365 // error while reading squid's answer
366 fprintf( stderr
, "unable to read answer: %s\n", strerror(errno
) );
372 status
= strtol(buffer
+8,0,10);
376 // log the output of our operation
378 if ( ::verbose
) flag
= ( log_extended( fn
, status
, size
, &meta
) >= 0 );
379 else flag
= ( log_output( fn
, status
, size
, url
) >= 0 );
381 // remove the file, if purgemode bit#1, and HTTP result status 404).
382 if ( (::purgeMode
& 0x02) && status
== 404 ) {
384 if ( unlink(fn
) == -1 )
385 // error while unlinking file, this may happen due to the cache
386 // unlinking a file while it is still in the readdir() cache of purge.
387 fprintf( stderr
, "WARNING: unable to unlink %s: %s\n",
388 fn
, strerror(errno
) );
395 match( const char* fn
, const REList
* list
)
396 // purpose: do something with the given cache content filename
397 // paramtr: fn (IN): filename of cache file
398 // returns: true for successful action, false otherwise.
399 // warning: only return false, if you want the loop to terminate!
401 static const size_t addon
= sizeof(unsigned char) + sizeof(unsigned int);
404 if ( debugFlag
& 0x01 ) fprintf( stderr
, "# [3] %s\n", fn
);
405 int fd
= open( fn
, O_RDONLY
);
407 if ( read(fd
,::linebuffer
,::buffersize
-1) > 60 ) {
408 ::linebuffer
[ ::buffersize
-1 ] = '\0'; // force-terminate string
410 // check the offset into the start of object data. The offset is
411 // stored in a host endianess after the first byte.
412 unsigned int datastart
;
413 memcpy( &datastart
, ::linebuffer
+ 1, sizeof(unsigned int) );
414 if ( datastart
> ::buffersize
- addon
- 1 ) {
415 // check offset into server reply header (start of cache data).
416 fputs( "WARNING: Using a truncated URL string.\n", stderr
);
417 datastart
= ::buffersize
- addon
- 1;
420 // NEW: Parse squid meta data, which is a kind of linked list
421 // flattened out into a file byte stream. Somewhere within is
422 // the URL as part of the list. First, gobble all meta data.
423 unsigned int offset
= addon
;
425 while ( offset
+ addon
<= datastart
) {
426 unsigned int size
= 0;
427 memcpy( &size
, linebuffer
+offset
+sizeof(char), sizeof(unsigned int) );
428 meta
.append( SquidMetaType(*(linebuffer
+offset
)),
429 size
, linebuffer
+offset
+addon
);
430 offset
+= ( addon
+ size
);
433 // Now extract the key URL from the meta data.
434 const SquidTLV
* urlmeta
= meta
.search( STORE_META_URL
);
436 // found URL in meta data. Try to process the URL
438 flag
= action( fd
, datastart
, fn
, (char*) urlmeta
->data
, meta
);
440 REList
* head
= (REList
*) list
; // YUCK!
441 while ( head
!= 0 ) {
442 if ( head
->match( (char*) urlmeta
->data
) ) break;
446 flag
= action( fd
, datastart
, fn
, (char*) urlmeta
->data
, meta
);
451 // "meta" will be deleted when exiting from this block
453 // weird file, FIXME: stat() it!
455 long size
= ( fstat(fd
,&st
) == -1 ? -1 : st
.st_size
);
456 if ( ::verbose
) flag
= ( log_extended( fn
, -1, size
, 0 ) >= 0 );
457 else flag
= ( log_output( fn
, -1, size
, "strange file" ) >= 0 );
459 if ( (::purgeMode
& 0x04) ) {
461 if ( unlink(fn
) == -1 )
462 // error while unlinking file, this may happen due to the cache
463 // unlinking a file while it is in the readdir() cache of purge.
464 fprintf( stderr
, "WARNING: unable to unlink %s: %s\n",
465 fn
, strerror(errno
) );
470 // error while opening file, this may happen due to the cache
471 // unlinking a file while it is still in the readdir() cache of purge.
472 fprintf( stderr
, "WARNING: open \"%s\": %s\n", fn
, strerror(errno
) );
479 filelevel( const char* directory
, const REList
* list
)
480 // purpose: from given starting point, look for squid xxxxxxxx files.
481 // example: "/var/spool/cache/08/7F" as input, do action over files
482 // paramtr: directory (IN): starting point
483 // list (IN): list of rexps to match URLs against
484 // returns: true, if every subdir && action was successful.
487 if ( debugFlag
& 0x01 )
488 fprintf( stderr
, "# [2] %s\n", directory
);
490 DIR* dir
= opendir( directory
);
492 fprintf( stderr
, "unable to open directory \"%s\": %s\n",
493 directory
, strerror(errno
) );
497 // display a rotating character as "i am alive" signal (slows purge).
499 static char alivelist
[4][3] = { "\\\b", "|\b", "/\b", "-\b" };
500 static unsigned short alivecount
= 0;
501 assert( write( STDOUT_FILENO
, alivelist
[alivecount
++ & 3], 2 ) == 2 );
505 while ( (entry
=readdir(dir
)) && flag
) {
506 if ( isxstring(entry
->d_name
,8) ) {
507 char* name
= concat( directory
, "/", entry
->d_name
, 0 );
508 flag
= match( name
, list
);
518 dirlevel( const char* dirname
, const REList
* list
, bool level
=false )
519 // purpose: from given starting point, look for squid 00..FF directories.
520 // paramtr: dirname (IN): starting point
521 // list (IN): list of rexps to match URLs against
522 // level (IN): false==toplevel, true==1st level
523 // example: "/var/spool/cache", false as input, traverse subdirs w/ action.
524 // example: "/var/spool/cache/08", true as input, traverse subdirs w/ action.
525 // returns: true, if every subdir && action was successful.
526 // warning: this function is once-recursive, no deeper.
529 if ( debugFlag
& 0x01 )
530 fprintf( stderr
, "# [%d] %s\n", (level
? 1 : 0), dirname
);
532 DIR* dir
= opendir( dirname
);
534 fprintf( stderr
, "unable to open directory \"%s\": %s\n",
535 dirname
, strerror(errno
) );
540 while ( (entry
=readdir(dir
)) && flag
) {
541 if ( strlen(entry
->d_name
) == 2 &&
542 isxdigit(entry
->d_name
[0]) &&
543 isxdigit(entry
->d_name
[1]) ) {
544 char* name
= concat( dirname
, "/", entry
->d_name
, 0 );
545 flag
= level
? filelevel( name
, list
) : dirlevel( name
, list
, true );
555 checkForPortOnly( const char* optarg
)
556 // purpose: see if somebody just put in a port instead of a hostname
557 // paramtr: optarg (IN): argument from commandline
558 // returns: 0..65535 is the valid port number in network byte order,
561 // if there is a period in there, it must be a valid hostname
562 if ( strchr( optarg
, '.' ) != 0 ) return -1;
564 // if it is just a number between 0 and 65535, it must be a port
566 unsigned long result
= strtoul( optarg
, &errstr
, 0 );
567 if ( result
< 65536 && errstr
!= optarg
) return htons(result
);
570 // one last try, test for a symbolical service name
571 struct servent
* service
= getservbyname( optarg
, "tcp" );
572 return service
? service
->s_port
: -1;
580 // purpuse: write help message and exit
582 printf( "\n%s\nUsage:\t%s\t[-a] [-c cf] [-d l] [-(f|F) fn | -(e|E) re] "
583 "[-p h[:p]]\n\t\t[-P #] [-s] [-v] [-C dir [-H]] [-n]\n\n",
584 ::RCS_ID
, ::programname
);
586 " -a\tdisplay a little rotating thingy to indicate that I am alive (tty only).\n"
587 " -c c\tsquid.conf location, default \"%s\".\n"
588 " -C dir\tbase directory for content extraction (copy-out mode).\n"
589 " -d l\tdebug level, an OR of different debug options.\n"
590 " -e re\tsingle regular expression per -e instance (use quotes!).\n"
591 " -E re\tsingle case sensitive regular expression like -e.\n"
592 " -f fn\tname of textfile containing one regular expression per line.\n"
593 " -F fn\tname of textfile like -f containing case sensitive REs.\n"
594 " -H\tprepend HTTP reply header to destination files in copy-out mode.\n"
595 " -n\tdo not fork() when using more than one cache_dir.\n"
596 " -p h:p\tcache runs on host h and optional port p, default is %s:%u.\n"
597 " -P #\tif 0, just print matches; otherwise OR the following purge modes:\n"
598 "\t 0x01 really send PURGE to the cache.\n"
599 "\t 0x02 remove all caches files reported as 404 (not found).\n"
600 "\t 0x04 remove all weird (inaccessible or too small) cache files.\n"
601 "\t0 and 1 are recommended - slow rebuild your cache with other modes.\n"
602 " -s\tshow all options after option parsing, but before really starting.\n"
603 " -v\tshow more information about the file, e.g. MD5, timestamps and flags.\n"
604 "\n", DEFAULT_SQUID_CONF
, DEFAULTHOST
, DEFAULTPORT
);
609 parseCommandline( int argc
, char* argv
[], REList
*& head
,
610 char*& conffile
, char*& copydir
,
611 struct in_addr
& serverHost
, unsigned short& serverPort
)
612 // paramtr: argc: see ::main().
613 // argv: see ::main().
614 // returns: Does terminate the program on errors!
615 // purpose: suck in any commandline options, and set the global vars.
617 int option
, port
, showme
= 0;
622 if ( (ptr
= strrchr(argv
[0],'/')) == NULL
)
628 // extract commandline parameters
629 REList
* tail
= head
= 0;
631 while ( (option
= getopt( argc
, argv
, "ac:C:d:E:e:F:f:Hnp:P:sv" )) != -1 ) {
634 ::iamalive
= ! ::iamalive
;
637 if ( optarg
&& *optarg
) {
638 if ( copydir
) xfree( (void*) copydir
);
639 assert( (copydir
= xstrdup(optarg
)) );
643 if ( optarg
&& *optarg
) {
644 if ( *conffile
) xfree((void*) conffile
);
645 assert( (conffile
= xstrdup(optarg
)) );
650 ::debugFlag
= strtoul( optarg
, 0, 0 );
655 if ( head
== 0 ) tail
= head
= new REList( optarg
, option
=='E' );
657 tail
->next
= new REList( optarg
, option
=='E' );
663 if ( (rfile
= fopen( optarg
, "r" )) != NULL
) {
664 unsigned long lineno
= 0;
667 while ( fgets( line
, LINESIZE
, rfile
) != NULL
) {
669 int len
= strlen(line
)-1;
670 if ( len
+2 >= LINESIZE
) {
671 fprintf( stderr
, "%s:%lu: line too long, sorry.\n",
676 // remove trailing line breaks
677 while ( len
> 0 && ( line
[len
] == '\n' || line
[len
] == '\r' ) )
680 // insert into list of expressions
681 if ( head
== 0 ) tail
= head
= new REList(line
,option
=='F');
683 tail
->next
= new REList(line
,option
=='F');
689 fprintf( stderr
, "unable to open %s: %s\n", optarg
, strerror(errno
));
693 ::envelope
= ! ::envelope
;
696 ::no_fork
= ! ::no_fork
;
699 colon
= strchr( optarg
, ':' );
701 // no colon, only look at host
703 // fix: see if somebody just put in there a port (no periods)
704 // give port number precedence over host names
705 port
= checkForPortOnly( optarg
);
707 // assume that main() did set the default port
708 if ( convertHostname(optarg
,serverHost
) == -1 ) {
709 fprintf( stderr
, "unable to resolve host %s!\n", optarg
);
713 // assume that main() did set the default host
717 // colon used, port is extra
720 if ( convertHostname(optarg
,serverHost
) == -1 ) {
721 fprintf( stderr
, "unable to resolve host %s!\n", optarg
);
724 if ( convertPortname(colon
,serverPort
) == -1 ) {
725 fprintf( stderr
, "unable to resolve port %s!\n", colon
);
731 ::purgeMode
= ( strtol( optarg
, 0, 0 ) & 0x07 );
737 ::verbose
= ! ::verbose
;
747 if ( ! isatty(fileno(stdout
)) || (::debugFlag
& 0x01) ) ::iamalive
= false;
749 fputs( "There was no regular expression defined. If you intend\n", stderr
);
750 fputs( "to match all possible URLs, use \"-e .\" instead.\n", stderr
);
754 // postcondition: head != 0
757 // make sure that the copy out directory is there and accessible
758 if ( copydir
&& *copydir
)
759 if ( assert_copydir( copydir
) != 0 ) exit(1);
763 printf( "#\n# Currently active values for %s:\n# %s\n",
764 ::programname
, ::RCS_ID
);
765 printf( "# Debug level : " );
766 if ( ::debugFlag
) printf( "%#6.4x", ::debugFlag
);
767 else printf( "production level" ); // printf omits 0x prefix for 0!
768 printf( " + %s mode", ::no_fork
? "linear" : "parallel" );
769 puts( ::verbose
? " + extra verbosity" : "" );
771 printf( "# Copy-out directory: %s ",
772 copydir
? copydir
: "copy-out mode disabled" );
774 printf( "(%s HTTP header)\n", ::envelope
? "prepend" : "no" );
778 printf( "# Squid config file : %s\n", conffile
);
779 printf( "# Cacheserveraddress: %s:%u\n",
780 inet_ntoa( serverHost
), ntohs( serverPort
) );
781 printf( "# purge mode : 0x%02x\n", ::purgeMode
);
782 printf( "# Regular expression: " );
785 for ( tail
= head
; tail
!= NULL
; tail
= tail
->next
) {
787 printf( "#%22u", count
);
788 #if defined(LINUX) && putc==_IO_putc
789 // I HATE BROKEN LINUX HEADERS!
790 // purge.o(.text+0x1040): undefined reference to `_IO_putc'
791 // If your compilation breaks here, remove the undefinition
795 printf( " \"%s\"\n", tail
->data
);
807 if ( ::term_flag
) psignal( ::term_flag
, "received signal" );
808 delete[] ::linebuffer
;
811 "WARNING! Caches files were removed. Please shut down your cache, remove\n"
812 "your swap.state files and restart your cache again, i.e. effictively do\n"
813 "a slow rebuild your cache! Otherwise your squid *will* choke!\n", stderr
);
819 handler( int signo
) {
821 if ( getpid() == getpgrp() ) kill( -getpgrp(), signo
);
829 makelinebuffered( FILE* fp
, const char* fn
= 0 )
830 // purpose: make the given FILE line buffered
831 // paramtr: fp (IO): file pointer which to put into line buffer mode
832 // fn (IN): name of file to print in case of error
833 // returns: 0 is ok, -1 to indicate an error
834 // warning: error messages will already be printed
836 if ( setvbuf( fp
, 0, _IOLBF
, 0 ) == 0 ) {
841 fprintf( stderr
, "unable to make \"%s\" line buffered: %s\n",
842 fn
? fn
: "", strerror(errno
) );
848 main( int argc
, char* argv
[] )
852 char* conffile
= xstrdup( DEFAULT_SQUID_CONF
);
853 serverPort
= htons(DEFAULTPORT
);
854 if ( convertHostname(DEFAULTHOST
,serverHost
) == -1 ) {
855 fprintf( stderr
, "unable to resolve host %s!\n", DEFAULTHOST
);
860 ::linebuffer
= new char[ ::buffersize
];
861 assert( ::linebuffer
!= 0 );
864 puts( "### Use at your own risk! No guarantees whatsoever. You were warned. ###");
865 parseCommandline( argc
, argv
, list
, conffile
, ::copydir
,
866 serverHost
, serverPort
);
869 if ( atexit( exiter
) != 0 ||
870 Signal( SIGTERM
, handler
, true ) == SIG_ERR
||
871 Signal( SIGINT
, handler
, true ) == SIG_ERR
||
872 Signal( SIGHUP
, handler
, true ) == SIG_ERR
) {
873 perror( "unable to install signal/exit function" );
877 // try to read squid.conf file to determine all cache_dir locations
878 CacheDirVector
cdv(0);
879 if ( readConfigFile( cdv
, conffile
, debugFlag
? stderr
: 0 ) > 0 ) {
880 // there are some valid cache_dir entries.
881 // unless forking was forbidden by cmdline option,
882 // for a process for each cache_dir entry to remove files.
884 if ( ::no_fork
|| cdv
.size() == 1 ) {
885 // linear mode, one cache_dir after the next
886 for ( CacheDirVector::iterator i
= cdv
.begin(); i
!= cdv
.end(); ++i
) {
887 // execute OR complain
888 if ( ! dirlevel(i
->base
,list
) )
889 fprintf( stderr
, "program terminated due to error: %s",
891 xfree((void*) i
->base
);
894 // parallel mode, all cache_dir in parallel
895 pid_t
* child
= new pid_t
[ cdv
.size() ];
897 // make stdout/stderr line bufferd
898 makelinebuffered( stdout
, "stdout" );
899 makelinebuffered( stderr
, "stderr" );
901 // make parent process group leader for easier killings
902 if ( setpgid(getpid(), getpid()) != 0 ) {
903 perror( "unable to set process group leader" );
907 // -a is mutually exclusive with fork mode
909 puts( "# i-am-alive flag incompatible with fork mode, resetting" );
913 for ( size_t i
=0; i
< cdv
.size(); ++i
) {
914 if ( getpid() == getpgrp() ) {
915 // only parent == group leader may fork off new processes
916 if ( (child
[i
]=fork()) < 0 ) {
917 // fork error, this is bad!
918 perror( "unable to fork" );
919 kill( -getpgrp(), SIGTERM
);
921 } else if ( child
[i
] == 0 ) {
923 // execute OR complain
924 if ( ! dirlevel(cdv
[i
].base
,list
) )
925 fprintf( stderr
, "program terminated due to error: %s\n",
927 xfree((void*) cdv
[i
].base
);
931 if ( ::debugFlag
) printf( "forked child %d\n", (int) child
[i
] );
936 // collect the garbase
939 for ( size_t i
=0; i
< cdv
.size(); ++i
) {
940 while ( (temp
=waitpid( (pid_t
)-1, &status
, 0 )) == -1 )
941 if ( errno
== EINTR
) continue;
942 if ( ::debugFlag
) printf( "collected child %d\n", (int) temp
);
947 fprintf( stderr
, "no cache_dir or error accessing \"%s\"\n", conffile
);
951 if ( copydir
) xfree( (void*) copydir
);
952 xfree((void*) conffile
);