2 * HTTP routines for CUPS.
4 * Copyright 2007-2018 by Apple Inc.
5 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
7 * This file contains Kerberos support code, copyright 2006 by
10 * Licensed under Apache License v2.0. See the file "LICENSE" for more
15 * Include necessary headers...
18 #include "cups-private.h"
19 #include "debug-internal.h"
26 # include <sys/time.h>
27 # include <sys/resource.h>
31 #endif /* HAVE_POLL */
34 # endif /* HAVE_LIBZ */
41 static void http_add_field(http_t
*http
, http_field_t field
, const char *value
, int append
);
43 static void http_content_coding_finish(http_t
*http
);
44 static void http_content_coding_start(http_t
*http
,
46 #endif /* HAVE_LIBZ */
47 static http_t
*http_create(const char *host
, int port
,
48 http_addrlist_t
*addrlist
, int family
,
49 http_encryption_t encryption
,
50 int blocking
, _http_mode_t mode
);
52 static void http_debug_hex(const char *prefix
, const char *buffer
,
55 static ssize_t
http_read(http_t
*http
, char *buffer
, size_t length
);
56 static ssize_t
http_read_buffered(http_t
*http
, char *buffer
, size_t length
);
57 static ssize_t
http_read_chunk(http_t
*http
, char *buffer
, size_t length
);
58 static int http_send(http_t
*http
, http_state_t request
,
60 static ssize_t
http_write(http_t
*http
, const char *buffer
,
62 static ssize_t
http_write_chunk(http_t
*http
, const char *buffer
,
64 static off_t
http_set_length(http_t
*http
);
65 static void http_set_timeout(int fd
, double timeout
);
66 static void http_set_wait(http_t
*http
);
69 static int http_tls_upgrade(http_t
*http
);
77 static const char * const http_fields
[] =
94 "If-Unmodified-since",
109 "Authentication-Info"
114 * 'httpAcceptConnection()' - Accept a new HTTP client connection from the
115 * specified listening socket.
117 * @since CUPS 1.7/macOS 10.9@
120 http_t
* /* O - HTTP connection or @code NULL@ */
121 httpAcceptConnection(int fd
, /* I - Listen socket file descriptor */
122 int blocking
) /* I - 1 if the connection should be
123 blocking, 0 otherwise */
125 http_t
*http
; /* HTTP connection */
126 http_addrlist_t addrlist
; /* Dummy address list */
127 socklen_t addrlen
; /* Length of address */
128 int val
; /* Socket option value */
132 * Range check input...
139 * Create the client connection...
142 memset(&addrlist
, 0, sizeof(addrlist
));
144 if ((http
= http_create(NULL
, 0, &addrlist
, AF_UNSPEC
,
145 HTTP_ENCRYPTION_IF_REQUESTED
, blocking
,
146 _HTTP_MODE_SERVER
)) == NULL
)
150 * Accept the client and get the remote address...
153 addrlen
= sizeof(http_addr_t
);
155 if ((http
->fd
= accept(fd
, (struct sockaddr
*)&(http
->addrlist
->addr
),
158 _cupsSetHTTPError(HTTP_STATUS_ERROR
);
164 http
->hostaddr
= &(http
->addrlist
->addr
);
166 if (httpAddrLocalhost(http
->hostaddr
))
167 strlcpy(http
->hostname
, "localhost", sizeof(http
->hostname
));
169 httpAddrString(http
->hostaddr
, http
->hostname
, sizeof(http
->hostname
));
173 * Disable SIGPIPE for this socket.
177 setsockopt(http
->fd
, SOL_SOCKET
, SO_NOSIGPIPE
, CUPS_SOCAST
&val
, sizeof(val
));
178 #endif /* SO_NOSIGPIPE */
181 * Using TCP_NODELAY improves responsiveness, especially on systems
182 * with a slow loopback interface. Since we write large buffers
183 * when sending print files and requests, there shouldn't be any
184 * performance penalty for this...
188 setsockopt(http
->fd
, IPPROTO_TCP
, TCP_NODELAY
, CUPS_SOCAST
&val
, sizeof(val
));
192 * Close this socket when starting another process...
195 fcntl(http
->fd
, F_SETFD
, FD_CLOEXEC
);
196 #endif /* FD_CLOEXEC */
203 * 'httpAddCredential()' - Allocates and adds a single credential to an array.
205 * Use @code cupsArrayNew(NULL, NULL)@ to create a credentials array.
207 * @since CUPS 1.5/macOS 10.7@
210 int /* O - 0 on success, -1 on error */
212 cups_array_t
*credentials
, /* I - Credentials array */
213 const void *data
, /* I - PEM-encoded X.509 data */
214 size_t datalen
) /* I - Length of data */
216 http_credential_t
*credential
; /* Credential data */
219 if ((credential
= malloc(sizeof(http_credential_t
))) != NULL
)
221 credential
->datalen
= datalen
;
223 if ((credential
->data
= malloc(datalen
)) != NULL
)
225 memcpy(credential
->data
, data
, datalen
);
226 cupsArrayAdd(credentials
, credential
);
238 * 'httpBlocking()' - Set blocking/non-blocking behavior on a connection.
242 httpBlocking(http_t
*http
, /* I - HTTP connection */
243 int b
) /* I - 1 = blocking, 0 = non-blocking */
254 * 'httpCheck()' - Check to see if there is a pending response from the server.
257 int /* O - 0 = no data, 1 = data available */
258 httpCheck(http_t
*http
) /* I - HTTP connection */
260 return (httpWait(http
, 0));
265 * 'httpClearCookie()' - Clear the cookie value(s).
267 * @since CUPS 1.1.19/macOS 10.3@
271 httpClearCookie(http_t
*http
) /* I - HTTP connection */
285 * 'httpClearFields()' - Clear HTTP request fields.
289 httpClearFields(http_t
*http
) /* I - HTTP connection */
291 http_field_t field
; /* Current field */
294 DEBUG_printf(("httpClearFields(http=%p)", (void *)http
));
298 memset(http
->_fields
, 0, sizeof(http
->fields
));
300 for (field
= HTTP_FIELD_ACCEPT_LANGUAGE
; field
< HTTP_FIELD_MAX
; field
++)
302 if (http
->fields
[field
] && http
->fields
[field
] != http
->_fields
[field
])
303 free(http
->fields
[field
]);
305 http
->fields
[field
] = NULL
;
308 if (http
->mode
== _HTTP_MODE_CLIENT
)
310 if (http
->hostname
[0] == '/')
311 httpSetField(http
, HTTP_FIELD_HOST
, "localhost");
313 httpSetField(http
, HTTP_FIELD_HOST
, http
->hostname
);
316 http
->expect
= (http_status_t
)0;
322 * 'httpClose()' - Close an HTTP connection.
326 httpClose(http_t
*http
) /* I - HTTP connection */
329 OM_uint32 minor_status
; /* Minor status code */
330 #endif /* HAVE_GSSAPI */
333 DEBUG_printf(("httpClose(http=%p)", (void *)http
));
336 * Range check input...
343 * Close any open connection...
346 _httpDisconnect(http
);
349 * Free memory used...
352 httpAddrFreeList(http
->addrlist
);
358 if (http
->gssctx
!= GSS_C_NO_CONTEXT
)
359 gss_delete_sec_context(&minor_status
, &http
->gssctx
, GSS_C_NO_BUFFER
);
361 if (http
->gssname
!= GSS_C_NO_NAME
)
362 gss_release_name(&minor_status
, &http
->gssname
);
363 #endif /* HAVE_GSSAPI */
365 #ifdef HAVE_AUTHORIZATION_H
367 AuthorizationFree(http
->auth_ref
, kAuthorizationFlagDefaults
);
368 #endif /* HAVE_AUTHORIZATION_H */
370 httpClearFields(http
);
372 if (http
->authstring
&& http
->authstring
!= http
->_authstring
)
373 free(http
->authstring
);
380 * 'httpCompareCredentials()' - Compare two sets of X.509 credentials.
382 * @since CUPS 2.0/OS 10.10@
385 int /* O - 1 if they match, 0 if they do not */
386 httpCompareCredentials(
387 cups_array_t
*cred1
, /* I - First set of X.509 credentials */
388 cups_array_t
*cred2
) /* I - Second set of X.509 credentials */
390 http_credential_t
*temp1
, *temp2
; /* Temporary credentials */
393 for (temp1
= (http_credential_t
*)cupsArrayFirst(cred1
), temp2
= (http_credential_t
*)cupsArrayFirst(cred2
); temp1
&& temp2
; temp1
= (http_credential_t
*)cupsArrayNext(cred1
), temp2
= (http_credential_t
*)cupsArrayNext(cred2
))
394 if (temp1
->datalen
!= temp2
->datalen
)
396 else if (memcmp(temp1
->data
, temp2
->data
, temp1
->datalen
))
399 return (temp1
== temp2
);
404 * 'httpConnect()' - Connect to a HTTP server.
406 * This function is deprecated - use @link httpConnect2@ instead.
408 * @deprecated@ @exclude all@
411 http_t
* /* O - New HTTP connection */
412 httpConnect(const char *host
, /* I - Host to connect to */
413 int port
) /* I - Port number */
415 return (httpConnect2(host
, port
, NULL
, AF_UNSPEC
,
416 HTTP_ENCRYPTION_IF_REQUESTED
, 1, 30000, NULL
));
421 * 'httpConnect2()' - Connect to a HTTP server.
423 * @since CUPS 1.7/macOS 10.9@
426 http_t
* /* O - New HTTP connection */
428 const char *host
, /* I - Host to connect to */
429 int port
, /* I - Port number */
430 http_addrlist_t
*addrlist
, /* I - List of addresses or @code NULL@ to lookup */
431 int family
, /* I - Address family to use or @code AF_UNSPEC@ for any */
432 http_encryption_t encryption
, /* I - Type of encryption to use */
433 int blocking
, /* I - 1 for blocking connection, 0 for non-blocking */
434 int msec
, /* I - Connection timeout in milliseconds, 0 means don't connect */
435 int *cancel
) /* I - Pointer to "cancel" variable */
437 http_t
*http
; /* New HTTP connection */
440 DEBUG_printf(("httpConnect2(host=\"%s\", port=%d, addrlist=%p, family=%d, encryption=%d, blocking=%d, msec=%d, cancel=%p)", host
, port
, (void *)addrlist
, family
, encryption
, blocking
, msec
, (void *)cancel
));
443 * Create the HTTP structure...
446 if ((http
= http_create(host
, port
, addrlist
, family
, encryption
, blocking
,
447 _HTTP_MODE_CLIENT
)) == NULL
)
451 * Optionally connect to the remote system...
454 if (msec
== 0 || !httpReconnect2(http
, msec
, cancel
))
458 * Could not connect to any known address - bail out!
468 * 'httpConnectEncrypt()' - Connect to a HTTP server using encryption.
470 * This function is now deprecated. Please use the @link httpConnect2@ function
473 * @deprecated@ @exclude all@
476 http_t
* /* O - New HTTP connection */
478 const char *host
, /* I - Host to connect to */
479 int port
, /* I - Port number */
480 http_encryption_t encryption
) /* I - Type of encryption to use */
482 DEBUG_printf(("httpConnectEncrypt(host=\"%s\", port=%d, encryption=%d)",
483 host
, port
, encryption
));
485 return (httpConnect2(host
, port
, NULL
, AF_UNSPEC
, encryption
, 1, 30000,
491 * 'httpDelete()' - Send a DELETE request to the server.
494 int /* O - Status of call (0 = success) */
495 httpDelete(http_t
*http
, /* I - HTTP connection */
496 const char *uri
) /* I - URI to delete */
498 return (http_send(http
, HTTP_STATE_DELETE
, uri
));
503 * '_httpDisconnect()' - Disconnect a HTTP connection.
507 _httpDisconnect(http_t
*http
) /* I - HTTP connection */
512 #endif /* HAVE_SSL */
514 httpAddrClose(NULL
, http
->fd
);
521 * 'httpEncryption()' - Set the required encryption on the link.
524 int /* O - -1 on error, 0 on success */
525 httpEncryption(http_t
*http
, /* I - HTTP connection */
526 http_encryption_t e
) /* I - New encryption preference */
528 DEBUG_printf(("httpEncryption(http=%p, e=%d)", (void *)http
, e
));
534 if (http
->mode
== _HTTP_MODE_CLIENT
)
536 http
->encryption
= e
;
538 if ((http
->encryption
== HTTP_ENCRYPTION_ALWAYS
&& !http
->tls
) ||
539 (http
->encryption
== HTTP_ENCRYPTION_NEVER
&& http
->tls
))
540 return (httpReconnect2(http
, 30000, NULL
));
541 else if (http
->encryption
== HTTP_ENCRYPTION_REQUIRED
&& !http
->tls
)
542 return (http_tls_upgrade(http
));
548 if (e
== HTTP_ENCRYPTION_NEVER
&& http
->tls
)
551 http
->encryption
= e
;
552 if (e
!= HTTP_ENCRYPTION_IF_REQUESTED
&& !http
->tls
)
553 return (_httpTLSStart(http
));
558 if (e
== HTTP_ENCRYPTION_ALWAYS
|| e
== HTTP_ENCRYPTION_REQUIRED
)
562 #endif /* HAVE_SSL */
567 * 'httpError()' - Get the last error on a connection.
570 int /* O - Error code (errno) value */
571 httpError(http_t
*http
) /* I - HTTP connection */
574 return (http
->error
);
581 * 'httpFieldValue()' - Return the HTTP field enumeration value for a field
585 http_field_t
/* O - Field index */
586 httpFieldValue(const char *name
) /* I - String name */
588 int i
; /* Looping var */
591 for (i
= 0; i
< HTTP_FIELD_MAX
; i
++)
592 if (!_cups_strcasecmp(name
, http_fields
[i
]))
593 return ((http_field_t
)i
);
595 return (HTTP_FIELD_UNKNOWN
);
600 * 'httpFlush()' - Flush data read from a HTTP connection.
604 httpFlush(http_t
*http
) /* I - HTTP connection */
606 char buffer
[8192]; /* Junk buffer */
607 int blocking
; /* To block or not to block */
608 http_state_t oldstate
; /* Old state */
611 DEBUG_printf(("httpFlush(http=%p), state=%s", (void *)http
, httpStateString(http
->state
)));
614 * Nothing to do if we are in the "waiting" state...
617 if (http
->state
== HTTP_STATE_WAITING
)
621 * Temporarily set non-blocking mode so we don't get stuck in httpRead()...
624 blocking
= http
->blocking
;
628 * Read any data we can...
631 oldstate
= http
->state
;
632 while (httpRead2(http
, buffer
, sizeof(buffer
)) > 0);
635 * Restore blocking and reset the connection if we didn't get all of
636 * the remaining data...
639 http
->blocking
= blocking
;
641 if (http
->state
== oldstate
&& http
->state
!= HTTP_STATE_WAITING
&&
645 * Didn't get the data back, so close the current connection.
650 http_content_coding_finish(http
);
651 #endif /* HAVE_LIBZ */
653 DEBUG_puts("1httpFlush: Setting state to HTTP_STATE_WAITING and closing.");
655 http
->state
= HTTP_STATE_WAITING
;
660 #endif /* HAVE_SSL */
662 httpAddrClose(NULL
, http
->fd
);
670 * 'httpFlushWrite()' - Flush data written to a HTTP connection.
672 * @since CUPS 1.2/macOS 10.5@
675 int /* O - Bytes written or -1 on error */
676 httpFlushWrite(http_t
*http
) /* I - HTTP connection */
678 ssize_t bytes
; /* Bytes written */
681 DEBUG_printf(("httpFlushWrite(http=%p) data_encoding=%d", (void *)http
, http
? http
->data_encoding
: 100));
683 if (!http
|| !http
->wused
)
685 DEBUG_puts(http
? "1httpFlushWrite: Write buffer is empty." :
686 "1httpFlushWrite: No connection.");
690 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
691 bytes
= http_write_chunk(http
, http
->wbuffer
, (size_t)http
->wused
);
693 bytes
= http_write(http
, http
->wbuffer
, (size_t)http
->wused
);
697 DEBUG_printf(("1httpFlushWrite: Returning %d, errno=%d.", (int)bytes
, errno
));
704 * 'httpFreeCredentials()' - Free an array of credentials.
709 cups_array_t
*credentials
) /* I - Array of credentials */
711 http_credential_t
*credential
; /* Credential */
714 for (credential
= (http_credential_t
*)cupsArrayFirst(credentials
);
716 credential
= (http_credential_t
*)cupsArrayNext(credentials
))
718 cupsArrayRemove(credentials
, credential
);
719 free((void *)credential
->data
);
723 cupsArrayDelete(credentials
);
728 * 'httpGet()' - Send a GET request to the server.
731 int /* O - Status of call (0 = success) */
732 httpGet(http_t
*http
, /* I - HTTP connection */
733 const char *uri
) /* I - URI to get */
735 return (http_send(http
, HTTP_STATE_GET
, uri
));
740 * 'httpGetActivity()' - Get the most recent activity for a connection.
742 * The return value is the time in seconds of the last read or write.
744 * @since CUPS 2.0/OS 10.10@
747 time_t /* O - Time of last read or write */
748 httpGetActivity(http_t
*http
) /* I - HTTP connection */
750 return (http
? http
->activity
: 0);
755 * 'httpGetAuthString()' - Get the current authorization string.
757 * The authorization string is set by @link cupsDoAuthentication@ and
758 * @link httpSetAuthString@. Use @link httpGetAuthString@ to retrieve the
759 * string to use with @link httpSetField@ for the
760 * @code HTTP_FIELD_AUTHORIZATION@ value.
762 * @since CUPS 1.3/macOS 10.5@
765 char * /* O - Authorization string */
766 httpGetAuthString(http_t
*http
) /* I - HTTP connection */
769 return (http
->authstring
);
776 * 'httpGetBlocking()' - Get the blocking/non-block state of a connection.
778 * @since CUPS 1.2/macOS 10.5@
781 int /* O - 1 if blocking, 0 if non-blocking */
782 httpGetBlocking(http_t
*http
) /* I - HTTP connection */
784 return (http
? http
->blocking
: 0);
789 * 'httpGetContentEncoding()' - Get a common content encoding, if any, between
790 * the client and server.
792 * This function uses the value of the Accepts-Encoding HTTP header and must be
793 * called after receiving a response from the server or a request from the
794 * client. The value returned can be use in subsequent requests (for clients)
795 * or in the response (for servers) in order to compress the content stream.
797 * @since CUPS 1.7/macOS 10.9@
800 const char * /* O - Content-Coding value or
801 @code NULL@ for the identity
803 httpGetContentEncoding(http_t
*http
) /* I - HTTP connection */
806 if (http
&& http
->fields
[HTTP_FIELD_ACCEPT_ENCODING
])
808 int i
; /* Looping var */
809 char temp
[HTTP_MAX_VALUE
], /* Copy of Accepts-Encoding value */
810 *start
, /* Start of coding value */
811 *end
; /* End of coding value */
812 double qvalue
; /* "qvalue" for coding */
813 struct lconv
*loc
= localeconv(); /* Locale data */
814 static const char * const codings
[] =
815 { /* Supported content codings */
822 strlcpy(temp
, http
->fields
[HTTP_FIELD_ACCEPT_ENCODING
], sizeof(temp
));
824 for (start
= temp
; *start
; start
= end
)
827 * Find the end of the coding name...
832 while (*end
&& *end
!= ';' && *end
!= ',' && !isspace(*end
& 255))
838 * Grab the qvalue as needed...
841 if (!strncmp(end
, ";q=", 3))
842 qvalue
= _cupsStrScand(end
+ 3, NULL
, loc
);
845 * Skip past all attributes...
849 while (*end
&& *end
!= ',' && !isspace(*end
& 255))
855 while (*end
&& isspace(*end
& 255))
859 * Check value if it matches something we support...
865 for (i
= 0; i
< (int)(sizeof(codings
) / sizeof(codings
[0])); i
++)
866 if (!strcmp(start
, codings
[i
]))
870 #endif /* HAVE_LIBZ */
877 * 'httpGetCookie()' - Get any cookie data from the response.
879 * @since CUPS 1.1.19/macOS 10.3@
882 const char * /* O - Cookie data or @code NULL@ */
883 httpGetCookie(http_t
*http
) /* I - HTTP connection */
885 return (http
? http
->cookie
: NULL
);
890 * 'httpGetEncryption()' - Get the current encryption mode of a connection.
892 * This function returns the encryption mode for the connection. Use the
893 * @link httpIsEncrypted@ function to determine whether a TLS session has
896 * @since CUPS 2.0/OS 10.10@
899 http_encryption_t
/* O - Current encryption mode */
900 httpGetEncryption(http_t
*http
) /* I - HTTP connection */
902 return (http
? http
->encryption
: HTTP_ENCRYPTION_IF_REQUESTED
);
907 * 'httpGetExpect()' - Get the value of the Expect header, if any.
909 * Returns @code HTTP_STATUS_NONE@ if there is no Expect header, otherwise
910 * returns the expected HTTP status code, typically @code HTTP_STATUS_CONTINUE@.
912 * @since CUPS 1.7/macOS 10.9@
915 http_status_t
/* O - Expect: status, if any */
916 httpGetExpect(http_t
*http
) /* I - HTTP connection */
919 return (HTTP_STATUS_ERROR
);
921 return (http
->expect
);
926 * 'httpGetFd()' - Get the file descriptor associated with a connection.
928 * @since CUPS 1.2/macOS 10.5@
931 int /* O - File descriptor or -1 if none */
932 httpGetFd(http_t
*http
) /* I - HTTP connection */
934 return (http
? http
->fd
: -1);
939 * 'httpGetField()' - Get a field value from a request/response.
942 const char * /* O - Field value */
943 httpGetField(http_t
*http
, /* I - HTTP connection */
944 http_field_t field
) /* I - Field to get */
946 if (!http
|| field
<= HTTP_FIELD_UNKNOWN
|| field
>= HTTP_FIELD_MAX
)
948 else if (http
->fields
[field
])
949 return (http
->fields
[field
]);
956 * 'httpGetKeepAlive()' - Get the current Keep-Alive state of the connection.
958 * @since CUPS 2.0/OS 10.10@
961 http_keepalive_t
/* O - Keep-Alive state */
962 httpGetKeepAlive(http_t
*http
) /* I - HTTP connection */
964 return (http
? http
->keep_alive
: HTTP_KEEPALIVE_OFF
);
969 * 'httpGetLength()' - Get the amount of data remaining from the
970 * content-length or transfer-encoding fields.
972 * This function is deprecated and will not return lengths larger than
973 * 2^31 - 1; use httpGetLength2() instead.
975 * @deprecated@ @exclude all@
978 int /* O - Content length */
979 httpGetLength(http_t
*http
) /* I - HTTP connection */
982 * Get the read content length and return the 32-bit value.
987 httpGetLength2(http
);
989 return (http
->_data_remaining
);
997 * 'httpGetLength2()' - Get the amount of data remaining from the
998 * content-length or transfer-encoding fields.
1000 * This function returns the complete content length, even for
1001 * content larger than 2^31 - 1.
1003 * @since CUPS 1.2/macOS 10.5@
1006 off_t
/* O - Content length */
1007 httpGetLength2(http_t
*http
) /* I - HTTP connection */
1009 off_t remaining
; /* Remaining length */
1012 DEBUG_printf(("2httpGetLength2(http=%p), state=%s", (void *)http
, httpStateString(http
->state
)));
1017 if (http
->fields
[HTTP_FIELD_TRANSFER_ENCODING
] && !_cups_strcasecmp(http
->fields
[HTTP_FIELD_TRANSFER_ENCODING
], "chunked"))
1019 DEBUG_puts("4httpGetLength2: chunked request!");
1025 * The following is a hack for HTTP servers that don't send a
1026 * Content-Length or Transfer-Encoding field...
1028 * If there is no Content-Length then the connection must close
1029 * after the transfer is complete...
1032 if (!http
->fields
[HTTP_FIELD_CONTENT_LENGTH
] || !http
->fields
[HTTP_FIELD_CONTENT_LENGTH
][0])
1035 * Default content length is 0 for errors and certain types of operations,
1036 * and 2^31-1 for other successful requests...
1039 if (http
->status
>= HTTP_STATUS_MULTIPLE_CHOICES
||
1040 http
->state
== HTTP_STATE_OPTIONS
||
1041 (http
->state
== HTTP_STATE_GET
&& http
->mode
== _HTTP_MODE_SERVER
) ||
1042 http
->state
== HTTP_STATE_HEAD
||
1043 (http
->state
== HTTP_STATE_PUT
&& http
->mode
== _HTTP_MODE_CLIENT
) ||
1044 http
->state
== HTTP_STATE_DELETE
||
1045 http
->state
== HTTP_STATE_TRACE
||
1046 http
->state
== HTTP_STATE_CONNECT
)
1049 remaining
= 2147483647;
1051 else if ((remaining
= strtoll(http
->fields
[HTTP_FIELD_CONTENT_LENGTH
],
1055 DEBUG_printf(("4httpGetLength2: content_length=" CUPS_LLFMT
,
1056 CUPS_LLCAST remaining
));
1064 * 'httpGetPending()' - Get the number of bytes that are buffered for writing.
1066 * @since CUPS 2.0/OS 10.10@
1069 size_t /* O - Number of bytes buffered */
1070 httpGetPending(http_t
*http
) /* I - HTTP connection */
1072 return (http
? (size_t)http
->wused
: 0);
1077 * 'httpGetReady()' - Get the number of bytes that can be read without blocking.
1079 * @since CUPS 2.0/OS 10.10@
1082 size_t /* O - Number of bytes available */
1083 httpGetReady(http_t
*http
) /* I - HTTP connection */
1087 else if (http
->used
> 0)
1088 return ((size_t)http
->used
);
1091 return (_httpTLSPending(http
));
1092 #endif /* HAVE_SSL */
1099 * 'httpGetRemaining()' - Get the number of remaining bytes in the message
1100 * body or current chunk.
1102 * The @link httpIsChunked@ function can be used to determine whether the
1103 * message body is chunked or fixed-length.
1105 * @since CUPS 2.0/OS 10.10@
1108 size_t /* O - Remaining bytes */
1109 httpGetRemaining(http_t
*http
) /* I - HTTP connection */
1111 return (http
? (size_t)http
->data_remaining
: 0);
1116 * 'httpGets()' - Get a line of text from a HTTP connection.
1119 char * /* O - Line or @code NULL@ */
1120 httpGets(char *line
, /* I - Line to read into */
1121 int length
, /* I - Max length of buffer */
1122 http_t
*http
) /* I - HTTP connection */
1124 char *lineptr
, /* Pointer into line */
1125 *lineend
, /* End of line */
1126 *bufptr
, /* Pointer into input buffer */
1127 *bufend
; /* Pointer to end of buffer */
1128 ssize_t bytes
; /* Number of bytes read */
1129 int eol
; /* End-of-line? */
1132 DEBUG_printf(("2httpGets(line=%p, length=%d, http=%p)", (void *)line
, length
, (void *)http
));
1134 if (!http
|| !line
|| length
<= 1)
1138 * Read a line from the buffer...
1143 lineend
= line
+ length
- 1;
1146 while (lineptr
< lineend
)
1149 * Pre-load the buffer as needed...
1158 while (http
->used
== 0)
1161 * No newline; see if there is more data to be read...
1164 while (!_httpWait(http
, http
->wait_value
, 1))
1166 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1169 DEBUG_puts("3httpGets: Timed out!");
1171 http
->error
= WSAETIMEDOUT
;
1173 http
->error
= ETIMEDOUT
;
1178 bytes
= http_read(http
, http
->buffer
+ http
->used
, (size_t)(HTTP_MAX_BUFFER
- http
->used
));
1180 DEBUG_printf(("4httpGets: read " CUPS_LLFMT
" bytes.", CUPS_LLCAST bytes
));
1185 * Nope, can't get a line this time...
1189 DEBUG_printf(("3httpGets: recv() error %d!", WSAGetLastError()));
1191 if (WSAGetLastError() == WSAEINTR
)
1193 else if (WSAGetLastError() == WSAEWOULDBLOCK
)
1195 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1198 http
->error
= WSAGetLastError();
1200 else if (WSAGetLastError() != http
->error
)
1202 http
->error
= WSAGetLastError();
1207 DEBUG_printf(("3httpGets: recv() error %d!", errno
));
1211 else if (errno
== EWOULDBLOCK
|| errno
== EAGAIN
)
1213 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1215 else if (!http
->timeout_cb
&& errno
== EAGAIN
)
1218 http
->error
= errno
;
1220 else if (errno
!= http
->error
)
1222 http
->error
= errno
;
1229 else if (bytes
== 0)
1231 http
->error
= EPIPE
;
1237 * Yup, update the amount used...
1240 http
->used
+= (int)bytes
;
1244 * Now copy as much of the current line as possible...
1247 for (bufptr
= http
->buffer
, bufend
= http
->buffer
+ http
->used
;
1248 lineptr
< lineend
&& bufptr
< bufend
;)
1250 if (*bufptr
== 0x0a)
1256 else if (*bufptr
== 0x0d)
1259 *lineptr
++ = *bufptr
++;
1262 http
->used
-= (int)(bufptr
- http
->buffer
);
1264 memmove(http
->buffer
, bufptr
, (size_t)http
->used
);
1272 http
->activity
= time(NULL
);
1276 DEBUG_printf(("3httpGets: Returning \"%s\"", line
));
1282 DEBUG_puts("3httpGets: No new line available!");
1289 * 'httpGetState()' - Get the current state of the HTTP request.
1292 http_state_t
/* O - HTTP state */
1293 httpGetState(http_t
*http
) /* I - HTTP connection */
1295 return (http
? http
->state
: HTTP_STATE_ERROR
);
1300 * 'httpGetStatus()' - Get the status of the last HTTP request.
1302 * @since CUPS 1.2/macOS 10.5@
1305 http_status_t
/* O - HTTP status */
1306 httpGetStatus(http_t
*http
) /* I - HTTP connection */
1308 return (http
? http
->status
: HTTP_STATUS_ERROR
);
1313 * 'httpGetSubField()' - Get a sub-field value.
1315 * @deprecated@ @exclude all@
1318 char * /* O - Value or @code NULL@ */
1319 httpGetSubField(http_t
*http
, /* I - HTTP connection */
1320 http_field_t field
, /* I - Field index */
1321 const char *name
, /* I - Name of sub-field */
1322 char *value
) /* O - Value string */
1324 return (httpGetSubField2(http
, field
, name
, value
, HTTP_MAX_VALUE
));
1329 * 'httpGetSubField2()' - Get a sub-field value.
1331 * @since CUPS 1.2/macOS 10.5@
1334 char * /* O - Value or @code NULL@ */
1335 httpGetSubField2(http_t
*http
, /* I - HTTP connection */
1336 http_field_t field
, /* I - Field index */
1337 const char *name
, /* I - Name of sub-field */
1338 char *value
, /* O - Value string */
1339 int valuelen
) /* I - Size of value buffer */
1341 const char *fptr
; /* Pointer into field */
1342 char temp
[HTTP_MAX_VALUE
], /* Temporary buffer for name */
1343 *ptr
, /* Pointer into string buffer */
1344 *end
; /* End of value buffer */
1346 DEBUG_printf(("2httpGetSubField2(http=%p, field=%d, name=\"%s\", value=%p, valuelen=%d)", (void *)http
, field
, name
, (void *)value
, valuelen
));
1348 if (!http
|| !name
|| !value
|| valuelen
< 2 ||
1349 field
<= HTTP_FIELD_UNKNOWN
|| field
>= HTTP_FIELD_MAX
)
1352 end
= value
+ valuelen
- 1;
1354 for (fptr
= http
->fields
[field
]; *fptr
;)
1357 * Skip leading whitespace...
1360 while (_cups_isspace(*fptr
))
1370 * Get the sub-field name...
1374 *fptr
&& *fptr
!= '=' && !_cups_isspace(*fptr
) &&
1375 ptr
< (temp
+ sizeof(temp
) - 1);
1380 DEBUG_printf(("4httpGetSubField2: name=\"%s\"", temp
));
1383 * Skip trailing chars up to the '='...
1386 while (_cups_isspace(*fptr
))
1396 * Skip = and leading whitespace...
1401 while (_cups_isspace(*fptr
))
1407 * Read quoted string...
1410 for (ptr
= value
, fptr
++;
1411 *fptr
&& *fptr
!= '\"' && ptr
< end
;
1416 while (*fptr
&& *fptr
!= '\"')
1425 * Read unquoted string...
1429 *fptr
&& !_cups_isspace(*fptr
) && *fptr
!= ',' && ptr
< end
;
1434 while (*fptr
&& !_cups_isspace(*fptr
) && *fptr
!= ',')
1438 DEBUG_printf(("4httpGetSubField2: value=\"%s\"", value
));
1441 * See if this is the one...
1444 if (!strcmp(name
, temp
))
1446 DEBUG_printf(("3httpGetSubField2: Returning \"%s\"", value
));
1453 DEBUG_puts("3httpGetSubField2: Returning NULL");
1460 * 'httpGetVersion()' - Get the HTTP version at the other end.
1463 http_version_t
/* O - Version number */
1464 httpGetVersion(http_t
*http
) /* I - HTTP connection */
1466 return (http
? http
->version
: HTTP_VERSION_1_0
);
1471 * 'httpHead()' - Send a HEAD request to the server.
1474 int /* O - Status of call (0 = success) */
1475 httpHead(http_t
*http
, /* I - HTTP connection */
1476 const char *uri
) /* I - URI for head */
1478 DEBUG_printf(("httpHead(http=%p, uri=\"%s\")", (void *)http
, uri
));
1479 return (http_send(http
, HTTP_STATE_HEAD
, uri
));
1484 * 'httpInitialize()' - Initialize the HTTP interface library and set the
1485 * default HTTP proxy (if any).
1489 httpInitialize(void)
1491 static int initialized
= 0; /* Have we been called before? */
1493 WSADATA winsockdata
; /* WinSock data */
1500 _cupsGlobalUnlock();
1505 WSAStartup(MAKEWORD(2,2), &winsockdata
);
1507 #elif !defined(SO_NOSIGPIPE)
1509 * Ignore SIGPIPE signals...
1513 sigset(SIGPIPE
, SIG_IGN
);
1515 # elif defined(HAVE_SIGACTION)
1516 struct sigaction action
; /* POSIX sigaction data */
1519 memset(&action
, 0, sizeof(action
));
1520 action
.sa_handler
= SIG_IGN
;
1521 sigaction(SIGPIPE
, &action
, NULL
);
1524 signal(SIGPIPE
, SIG_IGN
);
1525 # endif /* !SO_NOSIGPIPE */
1529 _httpTLSInitialize();
1530 # endif /* HAVE_SSL */
1533 _cupsGlobalUnlock();
1538 * 'httpIsChunked()' - Report whether a message body is chunked.
1540 * This function returns non-zero if the message body is composed of
1541 * variable-length chunks.
1543 * @since CUPS 2.0/OS 10.10@
1546 int /* O - 1 if chunked, 0 if not */
1547 httpIsChunked(http_t
*http
) /* I - HTTP connection */
1549 return (http
? http
->data_encoding
== HTTP_ENCODING_CHUNKED
: 0);
1554 * 'httpIsEncrypted()' - Report whether a connection is encrypted.
1556 * This function returns non-zero if the connection is currently encrypted.
1558 * @since CUPS 2.0/OS 10.10@
1561 int /* O - 1 if encrypted, 0 if not */
1562 httpIsEncrypted(http_t
*http
) /* I - HTTP connection */
1564 return (http
? http
->tls
!= NULL
: 0);
1569 * 'httpOptions()' - Send an OPTIONS request to the server.
1572 int /* O - Status of call (0 = success) */
1573 httpOptions(http_t
*http
, /* I - HTTP connection */
1574 const char *uri
) /* I - URI for options */
1576 return (http_send(http
, HTTP_STATE_OPTIONS
, uri
));
1581 * 'httpPeek()' - Peek at data from a HTTP connection.
1583 * This function copies available data from the given HTTP connection, reading
1584 * a buffer as needed. The data is still available for reading using
1587 * For non-blocking connections the usual timeouts apply.
1589 * @since CUPS 1.7/macOS 10.9@
1592 ssize_t
/* O - Number of bytes copied */
1593 httpPeek(http_t
*http
, /* I - HTTP connection */
1594 char *buffer
, /* I - Buffer for data */
1595 size_t length
) /* I - Maximum number of bytes */
1597 ssize_t bytes
; /* Bytes read */
1598 char len
[32]; /* Length string */
1601 DEBUG_printf(("httpPeek(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
1603 if (http
== NULL
|| buffer
== NULL
)
1606 http
->activity
= time(NULL
);
1612 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
&&
1613 http
->data_remaining
<= 0)
1615 DEBUG_puts("2httpPeek: Getting chunk length...");
1617 if (httpGets(len
, sizeof(len
), http
) == NULL
)
1619 DEBUG_puts("1httpPeek: Could not get length!");
1625 DEBUG_puts("1httpPeek: Blank chunk length, trying again...");
1626 if (!httpGets(len
, sizeof(len
), http
))
1628 DEBUG_puts("1httpPeek: Could not get chunk length.");
1633 http
->data_remaining
= strtoll(len
, NULL
, 16);
1635 if (http
->data_remaining
< 0)
1637 DEBUG_puts("1httpPeek: Negative chunk length!");
1642 DEBUG_printf(("2httpPeek: data_remaining=" CUPS_LLFMT
,
1643 CUPS_LLCAST http
->data_remaining
));
1645 if (http
->data_remaining
<= 0 && http
->data_encoding
!= HTTP_ENCODING_FIELDS
)
1648 * A zero-length chunk ends a transfer; unless we are reading POST
1653 if (http
->coding
>= _HTTP_CODING_GUNZIP
)
1654 http_content_coding_finish(http
);
1655 #endif /* HAVE_LIBZ */
1657 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
1658 httpGets(len
, sizeof(len
), http
);
1660 if (http
->state
== HTTP_STATE_POST_RECV
)
1663 http
->state
= HTTP_STATE_STATUS
;
1665 DEBUG_printf(("1httpPeek: 0-length chunk, set state to %s.",
1666 httpStateString(http
->state
)));
1669 * Prevent future reads for this request...
1672 http
->data_encoding
= HTTP_ENCODING_FIELDS
;
1676 else if (length
> (size_t)http
->data_remaining
)
1677 length
= (size_t)http
->data_remaining
;
1680 if (http
->used
== 0 &&
1681 (http
->coding
== _HTTP_CODING_IDENTITY
||
1682 (http
->coding
>= _HTTP_CODING_GUNZIP
&& ((z_stream
*)http
->stream
)->avail_in
== 0)))
1684 if (http
->used
== 0)
1685 #endif /* HAVE_LIBZ */
1688 * Buffer small reads for better performance...
1691 ssize_t buflen
; /* Length of read for buffer */
1693 if (!http
->blocking
)
1695 while (!httpWait(http
, http
->wait_value
))
1697 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1704 if ((size_t)http
->data_remaining
> sizeof(http
->buffer
))
1705 buflen
= sizeof(http
->buffer
);
1707 buflen
= (ssize_t
)http
->data_remaining
;
1709 DEBUG_printf(("2httpPeek: Reading %d bytes into buffer.", (int)buflen
));
1710 bytes
= http_read(http
, http
->buffer
, (size_t)buflen
);
1712 DEBUG_printf(("2httpPeek: Read " CUPS_LLFMT
" bytes into buffer.",
1713 CUPS_LLCAST bytes
));
1717 http_debug_hex("httpPeek", http
->buffer
, (int)bytes
);
1720 http
->used
= (int)bytes
;
1725 if (http
->coding
>= _HTTP_CODING_GUNZIP
)
1727 # ifdef HAVE_INFLATECOPY
1728 int zerr
; /* Decompressor error */
1729 z_stream stream
; /* Copy of decompressor stream */
1731 if (http
->used
> 0 && ((z_stream
*)http
->stream
)->avail_in
< HTTP_MAX_BUFFER
)
1733 size_t buflen
= buflen
= HTTP_MAX_BUFFER
- ((z_stream
*)http
->stream
)->avail_in
;
1734 /* Number of bytes to copy */
1736 if (((z_stream
*)http
->stream
)->avail_in
> 0 &&
1737 ((z_stream
*)http
->stream
)->next_in
> http
->sbuffer
)
1738 memmove(http
->sbuffer
, ((z_stream
*)http
->stream
)->next_in
, ((z_stream
*)http
->stream
)->avail_in
);
1740 ((z_stream
*)http
->stream
)->next_in
= http
->sbuffer
;
1742 if (buflen
> (size_t)http
->data_remaining
)
1743 buflen
= (size_t)http
->data_remaining
;
1745 if (buflen
> (size_t)http
->used
)
1746 buflen
= (size_t)http
->used
;
1748 DEBUG_printf(("1httpPeek: Copying %d more bytes of data into "
1749 "decompression buffer.", (int)buflen
));
1751 memcpy(http
->sbuffer
+ ((z_stream
*)http
->stream
)->avail_in
, http
->buffer
, buflen
);
1752 ((z_stream
*)http
->stream
)->avail_in
+= buflen
;
1753 http
->used
-= (int)buflen
;
1754 http
->data_remaining
-= (off_t
)buflen
;
1757 memmove(http
->buffer
, http
->buffer
+ buflen
, (size_t)http
->used
);
1760 DEBUG_printf(("2httpPeek: length=%d, avail_in=%d", (int)length
,
1761 (int)((z_stream
*)http
->stream
)->avail_in
));
1763 if (inflateCopy(&stream
, (z_stream
*)http
->stream
) != Z_OK
)
1765 DEBUG_puts("2httpPeek: Unable to copy decompressor stream.");
1766 http
->error
= ENOMEM
;
1770 stream
.next_out
= (Bytef
*)buffer
;
1771 stream
.avail_out
= (uInt
)length
;
1773 zerr
= inflate(&stream
, Z_SYNC_FLUSH
);
1774 inflateEnd(&stream
);
1778 DEBUG_printf(("2httpPeek: zerr=%d", zerr
));
1780 http_debug_hex("2httpPeek", (char *)http
->sbuffer
, (int)((z_stream
*)http
->stream
)->avail_in
);
1787 bytes
= (ssize_t
)(length
- ((z_stream
*)http
->stream
)->avail_out
);
1790 DEBUG_puts("2httpPeek: No inflateCopy on this platform, httpPeek does not "
1791 "work with compressed streams.");
1793 # endif /* HAVE_INFLATECOPY */
1796 #endif /* HAVE_LIBZ */
1799 if (length
> (size_t)http
->used
)
1800 length
= (size_t)http
->used
;
1802 bytes
= (ssize_t
)length
;
1804 DEBUG_printf(("2httpPeek: grabbing %d bytes from input buffer...",
1807 memcpy(buffer
, http
->buffer
, length
);
1815 if (WSAGetLastError() == WSAEINTR
|| WSAGetLastError() == WSAEWOULDBLOCK
)
1818 http
->error
= WSAGetLastError();
1820 if (errno
== EINTR
|| errno
== EAGAIN
)
1823 http
->error
= errno
;
1826 else if (bytes
== 0)
1828 http
->error
= EPIPE
;
1837 * 'httpPost()' - Send a POST request to the server.
1840 int /* O - Status of call (0 = success) */
1841 httpPost(http_t
*http
, /* I - HTTP connection */
1842 const char *uri
) /* I - URI for post */
1844 return (http_send(http
, HTTP_STATE_POST
, uri
));
1849 * 'httpPrintf()' - Print a formatted string to a HTTP connection.
1854 int /* O - Number of bytes written */
1855 httpPrintf(http_t
*http
, /* I - HTTP connection */
1856 const char *format
, /* I - printf-style format string */
1857 ...) /* I - Additional args as needed */
1859 ssize_t bytes
; /* Number of bytes to write */
1860 char buf
[16384]; /* Buffer for formatted string */
1861 va_list ap
; /* Variable argument pointer */
1864 DEBUG_printf(("2httpPrintf(http=%p, format=\"%s\", ...)", (void *)http
, format
));
1866 va_start(ap
, format
);
1867 bytes
= vsnprintf(buf
, sizeof(buf
), format
, ap
);
1870 DEBUG_printf(("3httpPrintf: (" CUPS_LLFMT
" bytes) %s", CUPS_LLCAST bytes
, buf
));
1872 if (http
->data_encoding
== HTTP_ENCODING_FIELDS
)
1873 return ((int)httpWrite2(http
, buf
, (size_t)bytes
));
1878 DEBUG_puts("4httpPrintf: flushing existing data...");
1880 if (httpFlushWrite(http
) < 0)
1884 return ((int)http_write(http
, buf
, (size_t)bytes
));
1890 * 'httpPut()' - Send a PUT request to the server.
1893 int /* O - Status of call (0 = success) */
1894 httpPut(http_t
*http
, /* I - HTTP connection */
1895 const char *uri
) /* I - URI to put */
1897 DEBUG_printf(("httpPut(http=%p, uri=\"%s\")", (void *)http
, uri
));
1898 return (http_send(http
, HTTP_STATE_PUT
, uri
));
1903 * 'httpRead()' - Read data from a HTTP connection.
1905 * This function is deprecated. Use the httpRead2() function which can
1906 * read more than 2GB of data.
1908 * @deprecated@ @exclude all@
1911 int /* O - Number of bytes read */
1912 httpRead(http_t
*http
, /* I - HTTP connection */
1913 char *buffer
, /* I - Buffer for data */
1914 int length
) /* I - Maximum number of bytes */
1916 return ((int)httpRead2(http
, buffer
, (size_t)length
));
1921 * 'httpRead2()' - Read data from a HTTP connection.
1923 * @since CUPS 1.2/macOS 10.5@
1926 ssize_t
/* O - Number of bytes read */
1927 httpRead2(http_t
*http
, /* I - HTTP connection */
1928 char *buffer
, /* I - Buffer for data */
1929 size_t length
) /* I - Maximum number of bytes */
1931 ssize_t bytes
; /* Bytes read */
1935 DEBUG_printf(("httpRead2(http=%p, buffer=%p, length=" CUPS_LLFMT
") coding=%d data_encoding=%d data_remaining=" CUPS_LLFMT
, (void *)http
, (void *)buffer
, CUPS_LLCAST length
, http
->coding
, http
->data_encoding
, CUPS_LLCAST http
->data_remaining
));
1937 DEBUG_printf(("httpRead2(http=%p, buffer=%p, length=" CUPS_LLFMT
") data_encoding=%d data_remaining=" CUPS_LLFMT
, (void *)http
, (void *)buffer
, CUPS_LLCAST length
, http
->data_encoding
, CUPS_LLCAST http
->data_remaining
));
1938 #endif /* HAVE_LIBZ */
1940 if (http
== NULL
|| buffer
== NULL
)
1943 http
->activity
= time(NULL
);
1950 if (http
->coding
>= _HTTP_CODING_GUNZIP
)
1954 if (((z_stream
*)http
->stream
)->avail_in
> 0)
1956 int zerr
; /* Decompressor error */
1958 DEBUG_printf(("2httpRead2: avail_in=%d, avail_out=%d",
1959 (int)((z_stream
*)http
->stream
)->avail_in
, (int)length
));
1961 ((z_stream
*)http
->stream
)->next_out
= (Bytef
*)buffer
;
1962 ((z_stream
*)http
->stream
)->avail_out
= (uInt
)length
;
1964 if ((zerr
= inflate((z_stream
*)http
->stream
, Z_SYNC_FLUSH
)) < Z_OK
)
1966 DEBUG_printf(("2httpRead2: zerr=%d", zerr
));
1968 http_debug_hex("2httpRead2", (char *)http
->sbuffer
, (int)((z_stream
*)http
->stream
)->avail_in
);
1975 bytes
= (ssize_t
)(length
- ((z_stream
*)http
->stream
)->avail_out
);
1977 DEBUG_printf(("2httpRead2: avail_in=%d, avail_out=%d, bytes=%d",
1978 ((z_stream
*)http
->stream
)->avail_in
, ((z_stream
*)http
->stream
)->avail_out
,
1986 ssize_t buflen
= HTTP_MAX_BUFFER
- (ssize_t
)((z_stream
*)http
->stream
)->avail_in
;
1987 /* Additional bytes for buffer */
1991 if (((z_stream
*)http
->stream
)->avail_in
> 0 &&
1992 ((z_stream
*)http
->stream
)->next_in
> http
->sbuffer
)
1993 memmove(http
->sbuffer
, ((z_stream
*)http
->stream
)->next_in
, ((z_stream
*)http
->stream
)->avail_in
);
1995 ((z_stream
*)http
->stream
)->next_in
= http
->sbuffer
;
1997 DEBUG_printf(("1httpRead2: Reading up to %d more bytes of data into "
1998 "decompression buffer.", (int)buflen
));
2000 if (http
->data_remaining
> 0)
2002 if (buflen
> http
->data_remaining
)
2003 buflen
= (ssize_t
)http
->data_remaining
;
2005 bytes
= http_read_buffered(http
, (char *)http
->sbuffer
+ ((z_stream
*)http
->stream
)->avail_in
, (size_t)buflen
);
2007 else if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
2008 bytes
= http_read_chunk(http
, (char *)http
->sbuffer
+ ((z_stream
*)http
->stream
)->avail_in
, (size_t)buflen
);
2014 else if (bytes
== 0)
2017 DEBUG_printf(("1httpRead2: Adding " CUPS_LLFMT
" bytes to "
2018 "decompression buffer.", CUPS_LLCAST bytes
));
2020 http
->data_remaining
-= bytes
;
2021 ((z_stream
*)http
->stream
)->avail_in
+= (uInt
)bytes
;
2023 if (http
->data_remaining
<= 0 &&
2024 http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
2027 * Read the trailing blank line now...
2030 char len
[32]; /* Length string */
2032 httpGets(len
, sizeof(len
), http
);
2044 #endif /* HAVE_LIBZ */
2045 if (http
->data_remaining
== 0 && http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
2047 if ((bytes
= http_read_chunk(http
, buffer
, length
)) > 0)
2049 http
->data_remaining
-= bytes
;
2051 if (http
->data_remaining
<= 0)
2054 * Read the trailing blank line now...
2057 char len
[32]; /* Length string */
2059 httpGets(len
, sizeof(len
), http
);
2063 else if (http
->data_remaining
<= 0)
2066 * No more data to read...
2073 DEBUG_printf(("1httpRead2: Reading up to %d bytes into buffer.",
2076 if (length
> (size_t)http
->data_remaining
)
2077 length
= (size_t)http
->data_remaining
;
2079 if ((bytes
= http_read_buffered(http
, buffer
, length
)) > 0)
2081 http
->data_remaining
-= bytes
;
2083 if (http
->data_remaining
<= 0 &&
2084 http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
2087 * Read the trailing blank line now...
2090 char len
[32]; /* Length string */
2092 httpGets(len
, sizeof(len
), http
);
2099 (http
->coding
== _HTTP_CODING_IDENTITY
||
2100 (http
->coding
>= _HTTP_CODING_GUNZIP
&& ((z_stream
*)http
->stream
)->avail_in
== 0)) &&
2101 #endif /* HAVE_LIBZ */
2102 ((http
->data_remaining
<= 0 &&
2103 http
->data_encoding
== HTTP_ENCODING_LENGTH
) ||
2104 (http
->data_encoding
== HTTP_ENCODING_CHUNKED
&& bytes
== 0)))
2107 if (http
->coding
>= _HTTP_CODING_GUNZIP
)
2108 http_content_coding_finish(http
);
2109 #endif /* HAVE_LIBZ */
2111 if (http
->state
== HTTP_STATE_POST_RECV
)
2113 else if (http
->state
== HTTP_STATE_GET_SEND
||
2114 http
->state
== HTTP_STATE_POST_SEND
)
2115 http
->state
= HTTP_STATE_WAITING
;
2117 http
->state
= HTTP_STATE_STATUS
;
2119 DEBUG_printf(("1httpRead2: End of content, set state to %s.",
2120 httpStateString(http
->state
)));
2128 * 'httpReadRequest()' - Read a HTTP request from a connection.
2130 * @since CUPS 1.7/macOS 10.9@
2133 http_state_t
/* O - New state of connection */
2134 httpReadRequest(http_t
*http
, /* I - HTTP connection */
2135 char *uri
, /* I - URI buffer */
2136 size_t urilen
) /* I - Size of URI buffer */
2138 char line
[4096], /* HTTP request line */
2139 *req_method
, /* HTTP request method */
2140 *req_uri
, /* HTTP request URI */
2141 *req_version
; /* HTTP request version number string */
2145 * Range check input...
2148 DEBUG_printf(("httpReadRequest(http=%p, uri=%p, urilen=" CUPS_LLFMT
")", (void *)http
, (void *)uri
, CUPS_LLCAST urilen
));
2153 if (!http
|| !uri
|| urilen
< 1)
2155 DEBUG_puts("1httpReadRequest: Bad arguments, returning HTTP_STATE_ERROR.");
2156 return (HTTP_STATE_ERROR
);
2158 else if (http
->state
!= HTTP_STATE_WAITING
)
2160 DEBUG_printf(("1httpReadRequest: Bad state %s, returning HTTP_STATE_ERROR.",
2161 httpStateString(http
->state
)));
2162 return (HTTP_STATE_ERROR
);
2169 httpClearFields(http
);
2171 http
->activity
= time(NULL
);
2172 http
->data_encoding
= HTTP_ENCODING_FIELDS
;
2173 http
->data_remaining
= 0;
2174 http
->keep_alive
= HTTP_KEEPALIVE_OFF
;
2175 http
->status
= HTTP_STATUS_OK
;
2176 http
->version
= HTTP_VERSION_1_1
;
2179 * Read a line from the socket...
2182 if (!httpGets(line
, sizeof(line
), http
))
2184 DEBUG_puts("1httpReadRequest: Unable to read, returning HTTP_STATE_ERROR");
2185 return (HTTP_STATE_ERROR
);
2190 DEBUG_puts("1httpReadRequest: Blank line, returning HTTP_STATE_WAITING");
2191 return (HTTP_STATE_WAITING
);
2194 DEBUG_printf(("1httpReadRequest: %s", line
));
2203 while (*req_uri
&& !isspace(*req_uri
& 255))
2208 DEBUG_puts("1httpReadRequest: No request URI.");
2209 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("No request URI."), 1);
2210 return (HTTP_STATE_ERROR
);
2215 while (*req_uri
&& isspace(*req_uri
& 255))
2218 req_version
= req_uri
;
2220 while (*req_version
&& !isspace(*req_version
& 255))
2225 DEBUG_puts("1httpReadRequest: No request protocol version.");
2226 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("No request protocol version."), 1);
2227 return (HTTP_STATE_ERROR
);
2230 *req_version
++ = '\0';
2232 while (*req_version
&& isspace(*req_version
& 255))
2239 if (!strcmp(req_method
, "OPTIONS"))
2240 http
->state
= HTTP_STATE_OPTIONS
;
2241 else if (!strcmp(req_method
, "GET"))
2242 http
->state
= HTTP_STATE_GET
;
2243 else if (!strcmp(req_method
, "HEAD"))
2244 http
->state
= HTTP_STATE_HEAD
;
2245 else if (!strcmp(req_method
, "POST"))
2246 http
->state
= HTTP_STATE_POST
;
2247 else if (!strcmp(req_method
, "PUT"))
2248 http
->state
= HTTP_STATE_PUT
;
2249 else if (!strcmp(req_method
, "DELETE"))
2250 http
->state
= HTTP_STATE_DELETE
;
2251 else if (!strcmp(req_method
, "TRACE"))
2252 http
->state
= HTTP_STATE_TRACE
;
2253 else if (!strcmp(req_method
, "CONNECT"))
2254 http
->state
= HTTP_STATE_CONNECT
;
2257 DEBUG_printf(("1httpReadRequest: Unknown method \"%s\".", req_method
));
2258 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("Unknown request method."), 1);
2259 return (HTTP_STATE_UNKNOWN_METHOD
);
2262 DEBUG_printf(("1httpReadRequest: Set state to %s.",
2263 httpStateString(http
->state
)));
2265 if (!strcmp(req_version
, "HTTP/1.0"))
2267 http
->version
= HTTP_VERSION_1_0
;
2268 http
->keep_alive
= HTTP_KEEPALIVE_OFF
;
2270 else if (!strcmp(req_version
, "HTTP/1.1"))
2272 http
->version
= HTTP_VERSION_1_1
;
2273 http
->keep_alive
= HTTP_KEEPALIVE_ON
;
2277 DEBUG_printf(("1httpReadRequest: Unknown version \"%s\".", req_version
));
2278 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("Unknown request version."), 1);
2279 return (HTTP_STATE_UNKNOWN_VERSION
);
2282 DEBUG_printf(("1httpReadRequest: URI is \"%s\".", req_uri
));
2283 strlcpy(uri
, req_uri
, urilen
);
2285 return (http
->state
);
2290 * 'httpReconnect()' - Reconnect to a HTTP server.
2292 * This function is deprecated. Please use the @link httpReconnect2@ function
2295 * @deprecated@ @exclude all@
2298 int /* O - 0 on success, non-zero on failure */
2299 httpReconnect(http_t
*http
) /* I - HTTP connection */
2301 DEBUG_printf(("httpReconnect(http=%p)", (void *)http
));
2303 return (httpReconnect2(http
, 30000, NULL
));
2308 * 'httpReconnect2()' - Reconnect to a HTTP server with timeout and optional
2312 int /* O - 0 on success, non-zero on failure */
2313 httpReconnect2(http_t
*http
, /* I - HTTP connection */
2314 int msec
, /* I - Timeout in milliseconds */
2315 int *cancel
) /* I - Pointer to "cancel" variable */
2317 http_addrlist_t
*addr
; /* Connected address */
2319 http_addrlist_t
*current
; /* Current address */
2320 char temp
[256]; /* Temporary address string */
2324 DEBUG_printf(("httpReconnect2(http=%p, msec=%d, cancel=%p)", (void *)http
, msec
, (void *)cancel
));
2328 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, strerror(EINVAL
), 0);
2335 DEBUG_puts("2httpReconnect2: Shutting down SSL/TLS...");
2338 #endif /* HAVE_SSL */
2341 * Close any previously open socket...
2346 DEBUG_printf(("2httpReconnect2: Closing socket %d...", http
->fd
));
2348 httpAddrClose(NULL
, http
->fd
);
2354 * Reset all state (except fields, which may be reused)...
2357 http
->state
= HTTP_STATE_WAITING
;
2358 http
->version
= HTTP_VERSION_1_1
;
2359 http
->keep_alive
= HTTP_KEEPALIVE_OFF
;
2360 memset(&http
->_hostaddr
, 0, sizeof(http
->_hostaddr
));
2361 http
->data_encoding
= HTTP_ENCODING_FIELDS
;
2362 http
->_data_remaining
= 0;
2364 http
->data_remaining
= 0;
2365 http
->hostaddr
= NULL
;
2369 * Connect to the server...
2373 for (current
= http
->addrlist
; current
; current
= current
->next
)
2374 DEBUG_printf(("2httpReconnect2: Address %s:%d",
2375 httpAddrString(&(current
->addr
), temp
, sizeof(temp
)),
2376 httpAddrPort(&(current
->addr
))));
2379 if ((addr
= httpAddrConnect2(http
->addrlist
, &(http
->fd
), msec
, cancel
)) == NULL
)
2382 * Unable to connect...
2386 http
->error
= WSAGetLastError();
2388 http
->error
= errno
;
2390 http
->status
= HTTP_STATUS_ERROR
;
2392 DEBUG_printf(("1httpReconnect2: httpAddrConnect failed: %s",
2393 strerror(http
->error
)));
2398 DEBUG_printf(("2httpReconnect2: New socket=%d", http
->fd
));
2400 if (http
->timeout_value
> 0)
2401 http_set_timeout(http
->fd
, http
->timeout_value
);
2403 http
->hostaddr
= &(addr
->addr
);
2407 if (http
->encryption
== HTTP_ENCRYPTION_ALWAYS
)
2410 * Always do encryption via SSL.
2413 if (_httpTLSStart(http
) != 0)
2415 httpAddrClose(NULL
, http
->fd
);
2420 else if (http
->encryption
== HTTP_ENCRYPTION_REQUIRED
&& !http
->tls_upgrade
)
2421 return (http_tls_upgrade(http
));
2422 #endif /* HAVE_SSL */
2424 DEBUG_printf(("1httpReconnect2: Connected to %s:%d...",
2425 httpAddrString(http
->hostaddr
, temp
, sizeof(temp
)),
2426 httpAddrPort(http
->hostaddr
)));
2433 * 'httpSetAuthString()' - Set the current authorization string.
2435 * This function just stores a copy of the current authorization string in
2436 * the HTTP connection object. You must still call @link httpSetField@ to set
2437 * @code HTTP_FIELD_AUTHORIZATION@ prior to issuing a HTTP request using
2438 * @link httpGet@, @link httpHead@, @link httpOptions@, @link httpPost@, or
2441 * @since CUPS 1.3/macOS 10.5@
2445 httpSetAuthString(http_t
*http
, /* I - HTTP connection */
2446 const char *scheme
, /* I - Auth scheme (NULL to clear it) */
2447 const char *data
) /* I - Auth data (NULL for none) */
2450 * Range check input...
2456 if (http
->authstring
&& http
->authstring
!= http
->_authstring
)
2457 free(http
->authstring
);
2459 http
->authstring
= http
->_authstring
;
2464 * Set the current authorization string...
2467 size_t len
= strlen(scheme
) + (data
? strlen(data
) + 1 : 0) + 1;
2470 if (len
> sizeof(http
->_authstring
))
2472 if ((temp
= malloc(len
)) == NULL
)
2473 len
= sizeof(http
->_authstring
);
2475 http
->authstring
= temp
;
2479 snprintf(http
->authstring
, len
, "%s %s", scheme
, data
);
2481 strlcpy(http
->authstring
, scheme
, len
);
2486 * Clear the current authorization string...
2489 http
->_authstring
[0] = '\0';
2495 * 'httpSetCredentials()' - Set the credentials associated with an encrypted
2498 * @since CUPS 1.5/macOS 10.7@
2501 int /* O - Status of call (0 = success) */
2502 httpSetCredentials(http_t
*http
, /* I - HTTP connection */
2503 cups_array_t
*credentials
) /* I - Array of credentials */
2505 if (!http
|| cupsArrayCount(credentials
) < 1)
2509 _httpFreeCredentials(http
->tls_credentials
);
2511 http
->tls_credentials
= _httpCreateCredentials(credentials
);
2512 #endif /* HAVE_SSL */
2514 return (http
->tls_credentials
? 0 : -1);
2519 * 'httpSetCookie()' - Set the cookie value(s).
2521 * @since CUPS 1.1.19/macOS 10.3@
2525 httpSetCookie(http_t
*http
, /* I - Connection */
2526 const char *cookie
) /* I - Cookie string */
2535 http
->cookie
= strdup(cookie
);
2537 http
->cookie
= NULL
;
2542 * 'httpSetDefaultField()' - Set the default value of an HTTP header.
2544 * Currently only @code HTTP_FIELD_ACCEPT_ENCODING@, @code HTTP_FIELD_SERVER@,
2545 * and @code HTTP_FIELD_USER_AGENT@ can be set.
2547 * @since CUPS 1.7/macOS 10.9@
2551 httpSetDefaultField(http_t
*http
, /* I - HTTP connection */
2552 http_field_t field
, /* I - Field index */
2553 const char *value
)/* I - Value */
2555 DEBUG_printf(("httpSetDefaultField(http=%p, field=%d(%s), value=\"%s\")", (void *)http
, field
, http_fields
[field
], value
));
2557 if (!http
|| field
<= HTTP_FIELD_UNKNOWN
|| field
>= HTTP_FIELD_MAX
)
2560 if (http
->default_fields
[field
])
2561 free(http
->default_fields
[field
]);
2563 http
->default_fields
[field
] = value
? strdup(value
) : NULL
;
2568 * 'httpSetExpect()' - Set the Expect: header in a request.
2570 * Currently only @code HTTP_STATUS_CONTINUE@ is supported for the "expect"
2573 * @since CUPS 1.2/macOS 10.5@
2577 httpSetExpect(http_t
*http
, /* I - HTTP connection */
2578 http_status_t expect
) /* I - HTTP status to expect
2579 (@code HTTP_STATUS_CONTINUE@) */
2581 DEBUG_printf(("httpSetExpect(http=%p, expect=%d)", (void *)http
, expect
));
2584 http
->expect
= expect
;
2589 * 'httpSetField()' - Set the value of an HTTP header.
2593 httpSetField(http_t
*http
, /* I - HTTP connection */
2594 http_field_t field
, /* I - Field index */
2595 const char *value
) /* I - Value */
2597 DEBUG_printf(("httpSetField(http=%p, field=%d(%s), value=\"%s\")", (void *)http
, field
, http_fields
[field
], value
));
2599 if (!http
|| field
<= HTTP_FIELD_UNKNOWN
|| field
>= HTTP_FIELD_MAX
|| !value
)
2602 http_add_field(http
, field
, value
, 0);
2607 * 'httpSetKeepAlive()' - Set the current Keep-Alive state of a connection.
2609 * @since CUPS 2.0/OS 10.10@
2614 http_t
*http
, /* I - HTTP connection */
2615 http_keepalive_t keep_alive
) /* I - New Keep-Alive value */
2618 http
->keep_alive
= keep_alive
;
2623 * 'httpSetLength()' - Set the content-length and content-encoding.
2625 * @since CUPS 1.2/macOS 10.5@
2629 httpSetLength(http_t
*http
, /* I - HTTP connection */
2630 size_t length
) /* I - Length (0 for chunked) */
2632 DEBUG_printf(("httpSetLength(http=%p, length=" CUPS_LLFMT
")", (void *)http
, CUPS_LLCAST length
));
2639 httpSetField(http
, HTTP_FIELD_TRANSFER_ENCODING
, "chunked");
2640 httpSetField(http
, HTTP_FIELD_CONTENT_LENGTH
, "");
2644 char len
[32]; /* Length string */
2647 snprintf(len
, sizeof(len
), CUPS_LLFMT
, CUPS_LLCAST length
);
2648 httpSetField(http
, HTTP_FIELD_TRANSFER_ENCODING
, "");
2649 httpSetField(http
, HTTP_FIELD_CONTENT_LENGTH
, len
);
2655 * 'httpSetTimeout()' - Set read/write timeouts and an optional callback.
2657 * The optional timeout callback receives both the HTTP connection and a user
2658 * data pointer and must return 1 to continue or 0 to error (time) out.
2660 * @since CUPS 1.5/macOS 10.7@
2665 http_t
*http
, /* I - HTTP connection */
2666 double timeout
, /* I - Number of seconds for timeout,
2667 must be greater than 0 */
2668 http_timeout_cb_t cb
, /* I - Callback function or @code NULL@ */
2669 void *user_data
) /* I - User data pointer */
2671 if (!http
|| timeout
<= 0.0)
2674 http
->timeout_cb
= cb
;
2675 http
->timeout_data
= user_data
;
2676 http
->timeout_value
= timeout
;
2679 http_set_timeout(http
->fd
, timeout
);
2681 http_set_wait(http
);
2686 * 'httpShutdown()' - Shutdown one side of an HTTP connection.
2688 * @since CUPS 2.0/OS 10.10@
2692 httpShutdown(http_t
*http
) /* I - HTTP connection */
2694 if (!http
|| http
->fd
< 0)
2700 #endif /* HAVE_SSL */
2703 shutdown(http
->fd
, SD_RECEIVE
); /* Microsoft-ism... */
2705 shutdown(http
->fd
, SHUT_RD
);
2711 * 'httpTrace()' - Send an TRACE request to the server.
2716 int /* O - Status of call (0 = success) */
2717 httpTrace(http_t
*http
, /* I - HTTP connection */
2718 const char *uri
) /* I - URI for trace */
2720 return (http_send(http
, HTTP_STATE_TRACE
, uri
));
2725 * '_httpUpdate()' - Update the current HTTP status for incoming data.
2727 * Note: Unlike httpUpdate(), this function does not flush pending write data
2728 * and only retrieves a single status line from the HTTP connection.
2731 int /* O - 1 to continue, 0 to stop */
2732 _httpUpdate(http_t
*http
, /* I - HTTP connection */
2733 http_status_t
*status
) /* O - Current HTTP status */
2735 char line
[32768], /* Line from connection... */
2736 *value
; /* Pointer to value on line */
2737 http_field_t field
; /* Field index */
2738 int major
, minor
; /* HTTP version numbers */
2741 DEBUG_printf(("_httpUpdate(http=%p, status=%p), state=%s", (void *)http
, (void *)status
, httpStateString(http
->state
)));
2744 * Grab a single line from the connection...
2747 if (!httpGets(line
, sizeof(line
), http
))
2749 *status
= HTTP_STATUS_ERROR
;
2753 DEBUG_printf(("2_httpUpdate: Got \"%s\"", line
));
2755 if (line
[0] == '\0')
2758 * Blank line means the start of the data section (if any). Return
2759 * the result code, too...
2761 * If we get status 100 (HTTP_STATUS_CONTINUE), then we *don't* change
2762 * states. Instead, we just return HTTP_STATUS_CONTINUE to the caller and
2766 if (http
->status
== HTTP_STATUS_CONTINUE
)
2768 *status
= http
->status
;
2772 if (http
->status
< HTTP_STATUS_BAD_REQUEST
)
2773 http
->digest_tries
= 0;
2776 if (http
->status
== HTTP_STATUS_SWITCHING_PROTOCOLS
&& !http
->tls
)
2778 if (_httpTLSStart(http
) != 0)
2780 httpAddrClose(NULL
, http
->fd
);
2782 *status
= http
->status
= HTTP_STATUS_ERROR
;
2786 *status
= HTTP_STATUS_CONTINUE
;
2789 #endif /* HAVE_SSL */
2791 if (http_set_length(http
) < 0)
2793 DEBUG_puts("1_httpUpdate: Bad Content-Length.");
2794 http
->error
= EINVAL
;
2795 http
->status
= *status
= HTTP_STATUS_ERROR
;
2799 switch (http
->state
)
2801 case HTTP_STATE_GET
:
2802 case HTTP_STATE_POST
:
2803 case HTTP_STATE_POST_RECV
:
2804 case HTTP_STATE_PUT
:
2807 DEBUG_printf(("1_httpUpdate: Set state to %s.",
2808 httpStateString(http
->state
)));
2810 case HTTP_STATE_POST_SEND
:
2811 case HTTP_STATE_HEAD
:
2815 http
->state
= HTTP_STATE_WAITING
;
2817 DEBUG_puts("1_httpUpdate: Reset state to HTTP_STATE_WAITING.");
2822 DEBUG_puts("1_httpUpdate: Calling http_content_coding_start.");
2823 http_content_coding_start(http
,
2824 httpGetField(http
, HTTP_FIELD_CONTENT_ENCODING
));
2825 #endif /* HAVE_LIBZ */
2827 *status
= http
->status
;
2830 else if (!strncmp(line
, "HTTP/", 5) && http
->mode
== _HTTP_MODE_CLIENT
)
2833 * Got the beginning of a response...
2836 int intstatus
; /* Status value as an integer */
2838 if (sscanf(line
, "HTTP/%d.%d%d", &major
, &minor
, &intstatus
) != 3)
2840 *status
= http
->status
= HTTP_STATUS_ERROR
;
2844 httpClearFields(http
);
2846 http
->version
= (http_version_t
)(major
* 100 + minor
);
2847 *status
= http
->status
= (http_status_t
)intstatus
;
2849 else if ((value
= strchr(line
, ':')) != NULL
)
2856 while (_cups_isspace(*value
))
2859 DEBUG_printf(("1_httpUpdate: Header %s: %s", line
, value
));
2862 * Be tolerants of servers that send unknown attribute fields...
2865 if (!_cups_strcasecmp(line
, "expect"))
2868 * "Expect: 100-continue" or similar...
2871 http
->expect
= (http_status_t
)atoi(value
);
2873 else if (!_cups_strcasecmp(line
, "cookie"))
2876 * "Cookie: name=value[; name=value ...]" - replaces previous cookies...
2879 httpSetCookie(http
, value
);
2881 else if ((field
= httpFieldValue(line
)) != HTTP_FIELD_UNKNOWN
)
2883 http_add_field(http
, field
, value
, 1);
2885 if (field
== HTTP_FIELD_AUTHENTICATION_INFO
)
2886 httpGetSubField2(http
, HTTP_FIELD_AUTHENTICATION_INFO
, "nextnonce", http
->nextnonce
, (int)sizeof(http
->nextnonce
));
2890 DEBUG_printf(("1_httpUpdate: unknown field %s seen!", line
));
2895 DEBUG_printf(("1_httpUpdate: Bad response line \"%s\"!", line
));
2896 http
->error
= EINVAL
;
2897 http
->status
= *status
= HTTP_STATUS_ERROR
;
2906 * 'httpUpdate()' - Update the current HTTP state for incoming data.
2909 http_status_t
/* O - HTTP status */
2910 httpUpdate(http_t
*http
) /* I - HTTP connection */
2912 http_status_t status
; /* Request status */
2915 DEBUG_printf(("httpUpdate(http=%p), state=%s", (void *)http
, httpStateString(http
->state
)));
2918 * Flush pending data, if any...
2923 DEBUG_puts("2httpUpdate: flushing buffer...");
2925 if (httpFlushWrite(http
) < 0)
2926 return (HTTP_STATUS_ERROR
);
2930 * If we haven't issued any commands, then there is nothing to "update"...
2933 if (http
->state
== HTTP_STATE_WAITING
)
2934 return (HTTP_STATUS_CONTINUE
);
2937 * Grab all of the lines we can from the connection...
2940 while (_httpUpdate(http
, &status
));
2943 * See if there was an error...
2946 if (http
->error
== EPIPE
&& http
->status
> HTTP_STATUS_CONTINUE
)
2948 DEBUG_printf(("1httpUpdate: Returning status %d...", http
->status
));
2949 return (http
->status
);
2954 DEBUG_printf(("1httpUpdate: socket error %d - %s", http
->error
,
2955 strerror(http
->error
)));
2956 http
->status
= HTTP_STATUS_ERROR
;
2957 return (HTTP_STATUS_ERROR
);
2961 * Return the current status...
2969 * '_httpWait()' - Wait for data available on a connection (no flush).
2972 int /* O - 1 if data is available, 0 otherwise */
2973 _httpWait(http_t
*http
, /* I - HTTP connection */
2974 int msec
, /* I - Milliseconds to wait */
2975 int usessl
) /* I - Use SSL context? */
2978 struct pollfd pfd
; /* Polled file descriptor */
2980 fd_set input_set
; /* select() input set */
2981 struct timeval timeout
; /* Timeout */
2982 #endif /* HAVE_POLL */
2983 int nfds
; /* Result from select()/poll() */
2986 DEBUG_printf(("4_httpWait(http=%p, msec=%d, usessl=%d)", (void *)http
, msec
, usessl
));
2990 DEBUG_printf(("5_httpWait: Returning 0 since fd=%d", http
->fd
));
2995 * Check the SSL/TLS buffers for data first...
2999 if (http
->tls
&& _httpTLSPending(http
))
3001 DEBUG_puts("5_httpWait: Return 1 since there is pending TLS data.");
3004 #endif /* HAVE_SSL */
3007 * Then try doing a select() or poll() to poll the socket...
3012 pfd
.events
= POLLIN
;
3016 nfds
= poll(&pfd
, 1, msec
);
3018 while (nfds
< 0 && (errno
== EINTR
|| errno
== EAGAIN
));
3023 FD_ZERO(&input_set
);
3024 FD_SET(http
->fd
, &input_set
);
3026 DEBUG_printf(("6_httpWait: msec=%d, http->fd=%d", msec
, http
->fd
));
3030 timeout
.tv_sec
= msec
/ 1000;
3031 timeout
.tv_usec
= (msec
% 1000) * 1000;
3033 nfds
= select(http
->fd
+ 1, &input_set
, NULL
, NULL
, &timeout
);
3036 nfds
= select(http
->fd
+ 1, &input_set
, NULL
, NULL
, NULL
);
3038 DEBUG_printf(("6_httpWait: select() returned %d...", nfds
));
3041 while (nfds
< 0 && (WSAGetLastError() == WSAEINTR
||
3042 WSAGetLastError() == WSAEWOULDBLOCK
));
3044 while (nfds
< 0 && (errno
== EINTR
|| errno
== EAGAIN
));
3045 # endif /* _WIN32 */
3046 #endif /* HAVE_POLL */
3048 DEBUG_printf(("5_httpWait: returning with nfds=%d, errno=%d...", nfds
,
3056 * 'httpWait()' - Wait for data available on a connection.
3058 * @since CUPS 1.1.19/macOS 10.3@
3061 int /* O - 1 if data is available, 0 otherwise */
3062 httpWait(http_t
*http
, /* I - HTTP connection */
3063 int msec
) /* I - Milliseconds to wait */
3066 * First see if there is data in the buffer...
3069 DEBUG_printf(("2httpWait(http=%p, msec=%d)", (void *)http
, msec
));
3076 DEBUG_puts("3httpWait: Returning 1 since there is buffered data ready.");
3081 if (http
->coding
>= _HTTP_CODING_GUNZIP
&& ((z_stream
*)http
->stream
)->avail_in
> 0)
3083 DEBUG_puts("3httpWait: Returning 1 since there is buffered data ready.");
3086 #endif /* HAVE_LIBZ */
3089 * Flush pending data, if any...
3094 DEBUG_puts("3httpWait: Flushing write buffer.");
3096 if (httpFlushWrite(http
) < 0)
3101 * If not, check the SSL/TLS buffers and do a select() on the connection...
3104 return (_httpWait(http
, msec
, 1));
3109 * 'httpWrite()' - Write data to a HTTP connection.
3111 * This function is deprecated. Use the httpWrite2() function which can
3112 * write more than 2GB of data.
3114 * @deprecated@ @exclude all@
3117 int /* O - Number of bytes written */
3118 httpWrite(http_t
*http
, /* I - HTTP connection */
3119 const char *buffer
, /* I - Buffer for data */
3120 int length
) /* I - Number of bytes to write */
3122 return ((int)httpWrite2(http
, buffer
, (size_t)length
));
3127 * 'httpWrite2()' - Write data to a HTTP connection.
3129 * @since CUPS 1.2/macOS 10.5@
3132 ssize_t
/* O - Number of bytes written */
3133 httpWrite2(http_t
*http
, /* I - HTTP connection */
3134 const char *buffer
, /* I - Buffer for data */
3135 size_t length
) /* I - Number of bytes to write */
3137 ssize_t bytes
; /* Bytes written */
3140 DEBUG_printf(("httpWrite2(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
3143 * Range check input...
3146 if (!http
|| !buffer
)
3148 DEBUG_puts("1httpWrite2: Returning -1 due to bad input.");
3153 * Mark activity on the connection...
3156 http
->activity
= time(NULL
);
3159 * Buffer small writes for better performance...
3163 if (http
->coding
== _HTTP_CODING_GZIP
|| http
->coding
== _HTTP_CODING_DEFLATE
)
3165 DEBUG_printf(("1httpWrite2: http->coding=%d", http
->coding
));
3169 http_content_coding_finish(http
);
3174 size_t slen
; /* Bytes to write */
3175 ssize_t sret
; /* Bytes written */
3177 ((z_stream
*)http
->stream
)->next_in
= (Bytef
*)buffer
;
3178 ((z_stream
*)http
->stream
)->avail_in
= (uInt
)length
;
3180 while (deflate((z_stream
*)http
->stream
, Z_NO_FLUSH
) == Z_OK
)
3182 DEBUG_printf(("1httpWrite2: avail_out=%d", ((z_stream
*)http
->stream
)->avail_out
));
3184 if (((z_stream
*)http
->stream
)->avail_out
> 0)
3187 slen
= _HTTP_MAX_SBUFFER
- ((z_stream
*)http
->stream
)->avail_out
;
3189 DEBUG_printf(("1httpWrite2: Writing intermediate chunk, len=%d", (int)slen
));
3191 if (slen
> 0 && http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
3192 sret
= http_write_chunk(http
, (char *)http
->sbuffer
, slen
);
3194 sret
= http_write(http
, (char *)http
->sbuffer
, slen
);
3200 DEBUG_puts("1httpWrite2: Unable to write, returning -1.");
3204 ((z_stream
*)http
->stream
)->next_out
= (Bytef
*)http
->sbuffer
;
3205 ((z_stream
*)http
->stream
)->avail_out
= (uInt
)_HTTP_MAX_SBUFFER
;
3208 bytes
= (ssize_t
)length
;
3212 #endif /* HAVE_LIBZ */
3215 if (http
->wused
&& (length
+ (size_t)http
->wused
) > sizeof(http
->wbuffer
))
3217 DEBUG_printf(("2httpWrite2: Flushing buffer (wused=%d, length="
3218 CUPS_LLFMT
")", http
->wused
, CUPS_LLCAST length
));
3220 httpFlushWrite(http
);
3223 if ((length
+ (size_t)http
->wused
) <= sizeof(http
->wbuffer
) && length
< sizeof(http
->wbuffer
))
3226 * Write to buffer...
3229 DEBUG_printf(("2httpWrite2: Copying " CUPS_LLFMT
" bytes to wbuffer...",
3230 CUPS_LLCAST length
));
3232 memcpy(http
->wbuffer
+ http
->wused
, buffer
, length
);
3233 http
->wused
+= (int)length
;
3234 bytes
= (ssize_t
)length
;
3239 * Otherwise write the data directly...
3242 DEBUG_printf(("2httpWrite2: Writing " CUPS_LLFMT
" bytes to socket...",
3243 CUPS_LLCAST length
));
3245 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
3246 bytes
= (ssize_t
)http_write_chunk(http
, buffer
, length
);
3248 bytes
= (ssize_t
)http_write(http
, buffer
, length
);
3250 DEBUG_printf(("2httpWrite2: Wrote " CUPS_LLFMT
" bytes...",
3251 CUPS_LLCAST bytes
));
3254 if (http
->data_encoding
== HTTP_ENCODING_LENGTH
)
3255 http
->data_remaining
-= bytes
;
3261 * Handle end-of-request processing...
3264 if ((http
->data_encoding
== HTTP_ENCODING_CHUNKED
&& length
== 0) ||
3265 (http
->data_encoding
== HTTP_ENCODING_LENGTH
&& http
->data_remaining
== 0))
3268 * Finished with the transfer; unless we are sending POST or PUT
3273 if (http
->coding
== _HTTP_CODING_GZIP
|| http
->coding
== _HTTP_CODING_DEFLATE
)
3274 http_content_coding_finish(http
);
3275 #endif /* HAVE_LIBZ */
3279 if (httpFlushWrite(http
) < 0)
3283 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
3286 * Send a 0-length chunk at the end of the request...
3289 http_write(http
, "0\r\n\r\n", 5);
3292 * Reset the data state...
3295 http
->data_encoding
= HTTP_ENCODING_FIELDS
;
3296 http
->data_remaining
= 0;
3299 if (http
->state
== HTTP_STATE_POST_RECV
)
3301 else if (http
->state
== HTTP_STATE_POST_SEND
||
3302 http
->state
== HTTP_STATE_GET_SEND
)
3303 http
->state
= HTTP_STATE_WAITING
;
3305 http
->state
= HTTP_STATE_STATUS
;
3307 DEBUG_printf(("2httpWrite2: Changed state to %s.",
3308 httpStateString(http
->state
)));
3311 DEBUG_printf(("1httpWrite2: Returning " CUPS_LLFMT
".", CUPS_LLCAST bytes
));
3318 * 'httpWriteResponse()' - Write a HTTP response to a client connection.
3320 * @since CUPS 1.7/macOS 10.9@
3323 int /* O - 0 on success, -1 on error */
3324 httpWriteResponse(http_t
*http
, /* I - HTTP connection */
3325 http_status_t status
) /* I - Status code */
3327 http_encoding_t old_encoding
; /* Old data_encoding value */
3328 off_t old_remaining
; /* Old data_remaining value */
3332 * Range check input...
3335 DEBUG_printf(("httpWriteResponse(http=%p, status=%d)", (void *)http
, status
));
3337 if (!http
|| status
< HTTP_STATUS_CONTINUE
)
3339 DEBUG_puts("1httpWriteResponse: Bad input.");
3344 * Set the various standard fields if they aren't already...
3347 if (!http
->fields
[HTTP_FIELD_DATE
])
3348 httpSetField(http
, HTTP_FIELD_DATE
, httpGetDateString(time(NULL
)));
3350 if (status
>= HTTP_STATUS_BAD_REQUEST
&& http
->keep_alive
)
3352 http
->keep_alive
= HTTP_KEEPALIVE_OFF
;
3353 httpSetField(http
, HTTP_FIELD_KEEP_ALIVE
, "");
3356 if (http
->version
== HTTP_VERSION_1_1
)
3358 if (!http
->fields
[HTTP_FIELD_CONNECTION
])
3360 if (http
->keep_alive
)
3361 httpSetField(http
, HTTP_FIELD_CONNECTION
, "Keep-Alive");
3363 httpSetField(http
, HTTP_FIELD_CONNECTION
, "close");
3366 if (http
->keep_alive
&& !http
->fields
[HTTP_FIELD_KEEP_ALIVE
])
3367 httpSetField(http
, HTTP_FIELD_KEEP_ALIVE
, "timeout=10");
3371 if (status
== HTTP_STATUS_UPGRADE_REQUIRED
||
3372 status
== HTTP_STATUS_SWITCHING_PROTOCOLS
)
3374 if (!http
->fields
[HTTP_FIELD_CONNECTION
])
3375 httpSetField(http
, HTTP_FIELD_CONNECTION
, "Upgrade");
3377 if (!http
->fields
[HTTP_FIELD_UPGRADE
])
3378 httpSetField(http
, HTTP_FIELD_UPGRADE
, "TLS/1.2,TLS/1.1,TLS/1.0");
3380 if (!http
->fields
[HTTP_FIELD_CONTENT_LENGTH
])
3381 httpSetField(http
, HTTP_FIELD_CONTENT_LENGTH
, "0");
3383 #endif /* HAVE_SSL */
3385 if (!http
->fields
[HTTP_FIELD_SERVER
])
3386 httpSetField(http
, HTTP_FIELD_SERVER
, http
->default_fields
[HTTP_FIELD_SERVER
] ? http
->default_fields
[HTTP_FIELD_SERVER
] : CUPS_MINIMAL
);
3389 * Set the Accept-Encoding field if it isn't already...
3392 if (!http
->fields
[HTTP_FIELD_ACCEPT_ENCODING
])
3393 httpSetField(http
, HTTP_FIELD_ACCEPT_ENCODING
, http
->default_fields
[HTTP_FIELD_ACCEPT_ENCODING
] ? http
->default_fields
[HTTP_FIELD_ACCEPT_ENCODING
] :
3395 "gzip, deflate, identity");
3398 #endif /* HAVE_LIBZ */
3401 * Send the response header...
3404 old_encoding
= http
->data_encoding
;
3405 old_remaining
= http
->data_remaining
;
3406 http
->data_encoding
= HTTP_ENCODING_FIELDS
;
3408 if (httpPrintf(http
, "HTTP/%d.%d %d %s\r\n", http
->version
/ 100, http
->version
% 100, (int)status
, httpStatus(status
)) < 0)
3410 http
->status
= HTTP_STATUS_ERROR
;
3414 if (status
!= HTTP_STATUS_CONTINUE
)
3417 * 100 Continue doesn't have the rest of the response headers...
3420 int i
; /* Looping var */
3421 const char *value
; /* Field value */
3423 for (i
= 0; i
< HTTP_FIELD_MAX
; i
++)
3425 if ((value
= httpGetField(http
, i
)) != NULL
&& *value
)
3427 if (httpPrintf(http
, "%s: %s\r\n", http_fields
[i
], value
) < 1)
3429 http
->status
= HTTP_STATUS_ERROR
;
3437 if (strchr(http
->cookie
, ';'))
3439 if (httpPrintf(http
, "Set-Cookie: %s\r\n", http
->cookie
) < 1)
3441 http
->status
= HTTP_STATUS_ERROR
;
3445 else if (httpPrintf(http
, "Set-Cookie: %s; path=/; httponly;%s\r\n", http
->cookie
, http
->tls
? " secure;" : "") < 1)
3447 http
->status
= HTTP_STATUS_ERROR
;
3453 * "Click-jacking" defense (STR #4492)...
3456 if (httpPrintf(http
, "X-Frame-Options: DENY\r\n"
3457 "Content-Security-Policy: frame-ancestors 'none'\r\n") < 1)
3459 http
->status
= HTTP_STATUS_ERROR
;
3464 if (httpWrite2(http
, "\r\n", 2) < 2)
3466 http
->status
= HTTP_STATUS_ERROR
;
3470 if (httpFlushWrite(http
) < 0)
3472 http
->status
= HTTP_STATUS_ERROR
;
3476 if (status
== HTTP_STATUS_CONTINUE
||
3477 status
== HTTP_STATUS_SWITCHING_PROTOCOLS
)
3480 * Restore the old data_encoding and data_length values...
3483 http
->data_encoding
= old_encoding
;
3484 http
->data_remaining
= old_remaining
;
3486 if (old_remaining
<= INT_MAX
)
3487 http
->_data_remaining
= (int)old_remaining
;
3489 http
->_data_remaining
= INT_MAX
;
3491 else if (http
->state
== HTTP_STATE_OPTIONS
||
3492 http
->state
== HTTP_STATE_HEAD
||
3493 http
->state
== HTTP_STATE_PUT
||
3494 http
->state
== HTTP_STATE_TRACE
||
3495 http
->state
== HTTP_STATE_CONNECT
||
3496 http
->state
== HTTP_STATE_STATUS
)
3498 DEBUG_printf(("1httpWriteResponse: Resetting state to HTTP_STATE_WAITING, "
3499 "was %s.", httpStateString(http
->state
)));
3500 http
->state
= HTTP_STATE_WAITING
;
3505 * Force data_encoding and data_length to be set according to the response
3509 http_set_length(http
);
3511 if (http
->data_encoding
== HTTP_ENCODING_LENGTH
&& http
->data_remaining
== 0)
3513 DEBUG_printf(("1httpWriteResponse: Resetting state to HTTP_STATE_WAITING, "
3514 "was %s.", httpStateString(http
->state
)));
3515 http
->state
= HTTP_STATE_WAITING
;
3519 if (http
->state
== HTTP_STATE_POST_RECV
|| http
->state
== HTTP_STATE_GET
)
3524 * Then start any content encoding...
3527 DEBUG_puts("1httpWriteResponse: Calling http_content_coding_start.");
3528 http_content_coding_start(http
,
3529 httpGetField(http
, HTTP_FIELD_CONTENT_ENCODING
));
3530 #endif /* HAVE_LIBZ */
3539 * 'http_add_field()' - Add a value for a HTTP field, appending if needed.
3543 http_add_field(http_t
*http
, /* I - HTTP connection */
3544 http_field_t field
, /* I - HTTP field */
3545 const char *value
, /* I - Value string */
3546 int append
) /* I - Append value? */
3548 char temp
[1024]; /* Temporary value string */
3549 size_t fieldlen
, /* Length of existing value */
3550 valuelen
, /* Length of value string */
3551 total
; /* Total length of string */
3554 if (field
== HTTP_FIELD_HOST
)
3557 * Special-case for Host: as we don't want a trailing "." on the hostname and
3558 * need to bracket IPv6 numeric addresses.
3561 char *ptr
= strchr(value
, ':');
3563 if (value
[0] != '[' && ptr
&& strchr(ptr
+ 1, ':'))
3566 * Bracket IPv6 numeric addresses...
3568 * This is slightly inefficient (basically copying twice), but is an edge
3569 * case and not worth optimizing...
3572 snprintf(temp
, sizeof(temp
), "[%s]", value
);
3578 * Check for a trailing dot on the hostname...
3581 strlcpy(temp
, value
, sizeof(temp
));
3583 ptr
= temp
+ strlen(temp
) - 1;
3590 if (append
&& field
!= HTTP_FIELD_ACCEPT_ENCODING
&& field
!= HTTP_FIELD_ACCEPT_LANGUAGE
&& field
!= HTTP_FIELD_ACCEPT_RANGES
&& field
!= HTTP_FIELD_ALLOW
&& field
!= HTTP_FIELD_LINK
&& field
!= HTTP_FIELD_TRANSFER_ENCODING
&& field
!= HTTP_FIELD_UPGRADE
&& field
!= HTTP_FIELD_WWW_AUTHENTICATE
)
3593 if (!append
&& http
->fields
[field
])
3595 if (http
->fields
[field
] != http
->_fields
[field
])
3596 free(http
->fields
[field
]);
3598 http
->fields
[field
] = NULL
;
3601 valuelen
= strlen(value
);
3605 http
->_fields
[field
][0] = '\0';
3609 if (http
->fields
[field
])
3611 fieldlen
= strlen(http
->fields
[field
]);
3612 total
= fieldlen
+ 2 + valuelen
;
3620 if (total
< HTTP_MAX_VALUE
&& field
< HTTP_FIELD_ACCEPT_ENCODING
)
3623 * Copy short values to legacy char arrays (maintained for binary
3624 * compatibility with CUPS 1.2.x and earlier applications...)
3629 char combined
[HTTP_MAX_VALUE
];
3630 /* Combined value string */
3632 snprintf(combined
, sizeof(combined
), "%s, %s", http
->_fields
[field
], value
);
3636 strlcpy(http
->_fields
[field
], value
, sizeof(http
->_fields
[field
]));
3637 http
->fields
[field
] = http
->_fields
[field
];
3642 * Expand the field value...
3645 char *combined
; /* New value string */
3647 if ((combined
= realloc(http
->fields
[field
], total
+ 1)) != NULL
)
3649 http
->fields
[field
] = combined
;
3650 strlcat(combined
, ", ", total
+ 1);
3651 strlcat(combined
, value
, total
+ 1);
3657 * Allocate the field value...
3660 http
->fields
[field
] = strdup(value
);
3664 if (field
== HTTP_FIELD_CONTENT_ENCODING
&& http
->data_encoding
!= HTTP_ENCODING_FIELDS
)
3666 DEBUG_puts("1httpSetField: Calling http_content_coding_start.");
3667 http_content_coding_start(http
, value
);
3669 #endif /* HAVE_LIBZ */
3675 * 'http_content_coding_finish()' - Finish doing any content encoding.
3679 http_content_coding_finish(
3680 http_t
*http
) /* I - HTTP connection */
3682 int zerr
; /* Compression status */
3683 Byte dummy
[1]; /* Dummy read buffer */
3684 size_t bytes
; /* Number of bytes to write */
3687 DEBUG_printf(("http_content_coding_finish(http=%p)", (void *)http
));
3688 DEBUG_printf(("1http_content_coding_finishing: http->coding=%d", http
->coding
));
3690 switch (http
->coding
)
3692 case _HTTP_CODING_DEFLATE
:
3693 case _HTTP_CODING_GZIP
:
3694 ((z_stream
*)http
->stream
)->next_in
= dummy
;
3695 ((z_stream
*)http
->stream
)->avail_in
= 0;
3699 zerr
= deflate((z_stream
*)http
->stream
, Z_FINISH
);
3700 bytes
= _HTTP_MAX_SBUFFER
- ((z_stream
*)http
->stream
)->avail_out
;
3704 DEBUG_printf(("1http_content_coding_finish: Writing trailing chunk, len=%d", (int)bytes
));
3706 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
3707 http_write_chunk(http
, (char *)http
->sbuffer
, bytes
);
3709 http_write(http
, (char *)http
->sbuffer
, bytes
);
3712 ((z_stream
*)http
->stream
)->next_out
= (Bytef
*)http
->sbuffer
;
3713 ((z_stream
*)http
->stream
)->avail_out
= (uInt
)_HTTP_MAX_SBUFFER
;
3715 while (zerr
== Z_OK
);
3717 deflateEnd((z_stream
*)http
->stream
);
3719 free(http
->sbuffer
);
3722 http
->sbuffer
= NULL
;
3723 http
->stream
= NULL
;
3726 httpFlushWrite(http
);
3729 case _HTTP_CODING_INFLATE
:
3730 case _HTTP_CODING_GUNZIP
:
3731 inflateEnd((z_stream
*)http
->stream
);
3733 free(http
->sbuffer
);
3736 http
->sbuffer
= NULL
;
3737 http
->stream
= NULL
;
3744 http
->coding
= _HTTP_CODING_IDENTITY
;
3749 * 'http_content_coding_start()' - Start doing content encoding.
3753 http_content_coding_start(
3754 http_t
*http
, /* I - HTTP connection */
3755 const char *value
) /* I - Value of Content-Encoding */
3757 int zerr
; /* Error/status */
3758 _http_coding_t coding
; /* Content coding value */
3761 DEBUG_printf(("http_content_coding_start(http=%p, value=\"%s\")", (void *)http
, value
));
3763 if (http
->coding
!= _HTTP_CODING_IDENTITY
)
3765 DEBUG_printf(("1http_content_coding_start: http->coding already %d.",
3769 else if (!strcmp(value
, "x-gzip") || !strcmp(value
, "gzip"))
3771 if (http
->state
== HTTP_STATE_GET_SEND
||
3772 http
->state
== HTTP_STATE_POST_SEND
)
3773 coding
= http
->mode
== _HTTP_MODE_SERVER
? _HTTP_CODING_GZIP
:
3774 _HTTP_CODING_GUNZIP
;
3775 else if (http
->state
== HTTP_STATE_POST_RECV
||
3776 http
->state
== HTTP_STATE_PUT_RECV
)
3777 coding
= http
->mode
== _HTTP_MODE_CLIENT
? _HTTP_CODING_GZIP
:
3778 _HTTP_CODING_GUNZIP
;
3781 DEBUG_puts("1http_content_coding_start: Not doing content coding.");
3785 else if (!strcmp(value
, "x-deflate") || !strcmp(value
, "deflate"))
3787 if (http
->state
== HTTP_STATE_GET_SEND
||
3788 http
->state
== HTTP_STATE_POST_SEND
)
3789 coding
= http
->mode
== _HTTP_MODE_SERVER
? _HTTP_CODING_DEFLATE
:
3790 _HTTP_CODING_INFLATE
;
3791 else if (http
->state
== HTTP_STATE_POST_RECV
||
3792 http
->state
== HTTP_STATE_PUT_RECV
)
3793 coding
= http
->mode
== _HTTP_MODE_CLIENT
? _HTTP_CODING_DEFLATE
:
3794 _HTTP_CODING_INFLATE
;
3797 DEBUG_puts("1http_content_coding_start: Not doing content coding.");
3803 DEBUG_puts("1http_content_coding_start: Not doing content coding.");
3809 case _HTTP_CODING_DEFLATE
:
3810 case _HTTP_CODING_GZIP
:
3812 httpFlushWrite(http
);
3814 if ((http
->sbuffer
= malloc(_HTTP_MAX_SBUFFER
)) == NULL
)
3816 http
->status
= HTTP_STATUS_ERROR
;
3817 http
->error
= errno
;
3822 * Window size for compression is 11 bits - optimal based on PWG Raster
3823 * sample files on pwg.org. -11 is raw deflate, 27 is gzip, per ZLIB
3827 if ((http
->stream
= calloc(1, sizeof(z_stream
))) == NULL
)
3829 free(http
->sbuffer
);
3831 http
->sbuffer
= NULL
;
3832 http
->status
= HTTP_STATUS_ERROR
;
3833 http
->error
= errno
;
3837 if ((zerr
= deflateInit2((z_stream
*)http
->stream
, Z_DEFAULT_COMPRESSION
, Z_DEFLATED
, coding
== _HTTP_CODING_DEFLATE
? -11 : 27, 7, Z_DEFAULT_STRATEGY
)) < Z_OK
)
3839 free(http
->sbuffer
);
3842 http
->sbuffer
= NULL
;
3843 http
->stream
= NULL
;
3844 http
->status
= HTTP_STATUS_ERROR
;
3845 http
->error
= zerr
== Z_MEM_ERROR
? ENOMEM
: EINVAL
;
3849 ((z_stream
*)http
->stream
)->next_out
= (Bytef
*)http
->sbuffer
;
3850 ((z_stream
*)http
->stream
)->avail_out
= (uInt
)_HTTP_MAX_SBUFFER
;
3853 case _HTTP_CODING_INFLATE
:
3854 case _HTTP_CODING_GUNZIP
:
3855 if ((http
->sbuffer
= malloc(_HTTP_MAX_SBUFFER
)) == NULL
)
3857 http
->status
= HTTP_STATUS_ERROR
;
3858 http
->error
= errno
;
3863 * Window size for decompression is up to 15 bits (maximum supported).
3864 * -15 is raw inflate, 31 is gunzip, per ZLIB documentation.
3867 if ((http
->stream
= calloc(1, sizeof(z_stream
))) == NULL
)
3869 free(http
->sbuffer
);
3871 http
->sbuffer
= NULL
;
3872 http
->status
= HTTP_STATUS_ERROR
;
3873 http
->error
= errno
;
3877 if ((zerr
= inflateInit2((z_stream
*)http
->stream
, coding
== _HTTP_CODING_INFLATE
? -15 : 31)) < Z_OK
)
3879 free(http
->sbuffer
);
3882 http
->sbuffer
= NULL
;
3883 http
->stream
= NULL
;
3884 http
->status
= HTTP_STATUS_ERROR
;
3885 http
->error
= zerr
== Z_MEM_ERROR
? ENOMEM
: EINVAL
;
3889 ((z_stream
*)http
->stream
)->avail_in
= 0;
3890 ((z_stream
*)http
->stream
)->next_in
= http
->sbuffer
;
3897 http
->coding
= coding
;
3899 DEBUG_printf(("1http_content_coding_start: http->coding now %d.",
3902 #endif /* HAVE_LIBZ */
3906 * 'http_create()' - Create an unconnected HTTP connection.
3909 static http_t
* /* O - HTTP connection */
3911 const char *host
, /* I - Hostname */
3912 int port
, /* I - Port number */
3913 http_addrlist_t
*addrlist
, /* I - Address list or @code NULL@ */
3914 int family
, /* I - Address family or AF_UNSPEC */
3915 http_encryption_t encryption
, /* I - Encryption to use */
3916 int blocking
, /* I - 1 for blocking mode */
3917 _http_mode_t mode
) /* I - _HTTP_MODE_CLIENT or _SERVER */
3919 http_t
*http
; /* New HTTP connection */
3920 char service
[255]; /* Service name */
3921 http_addrlist_t
*myaddrlist
= NULL
; /* My address list */
3924 DEBUG_printf(("4http_create(host=\"%s\", port=%d, addrlist=%p, family=%d, encryption=%d, blocking=%d, mode=%d)", host
, port
, (void *)addrlist
, family
, encryption
, blocking
, mode
));
3926 if (!host
&& mode
== _HTTP_MODE_CLIENT
)
3932 * Lookup the host...
3937 myaddrlist
= httpAddrCopyList(addrlist
);
3941 snprintf(service
, sizeof(service
), "%d", port
);
3943 myaddrlist
= httpAddrGetList(host
, family
, service
);
3950 * Allocate memory for the structure...
3953 if ((http
= calloc(sizeof(http_t
), 1)) == NULL
)
3955 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, strerror(errno
), 0);
3956 httpAddrFreeList(myaddrlist
);
3961 * Initialize the HTTP data...
3965 http
->activity
= time(NULL
);
3966 http
->addrlist
= myaddrlist
;
3967 http
->blocking
= blocking
;
3970 http
->gssctx
= GSS_C_NO_CONTEXT
;
3971 http
->gssname
= GSS_C_NO_NAME
;
3972 #endif /* HAVE_GSSAPI */
3973 http
->status
= HTTP_STATUS_CONTINUE
;
3974 http
->version
= HTTP_VERSION_1_1
;
3977 strlcpy(http
->hostname
, host
, sizeof(http
->hostname
));
3979 if (port
== 443) /* Always use encryption for https */
3980 http
->encryption
= HTTP_ENCRYPTION_ALWAYS
;
3982 http
->encryption
= encryption
;
3984 http_set_wait(http
);
3987 * Return the new structure...
3996 * 'http_debug_hex()' - Do a hex dump of a buffer.
4000 http_debug_hex(const char *prefix
, /* I - Prefix for line */
4001 const char *buffer
, /* I - Buffer to dump */
4002 int bytes
) /* I - Bytes to dump */
4004 int i
, j
, /* Looping vars */
4005 ch
; /* Current character */
4006 char line
[255], /* Line buffer */
4007 *start
, /* Start of line after prefix */
4008 *ptr
; /* Pointer into line */
4011 if (_cups_debug_fd
< 0 || _cups_debug_level
< 6)
4014 DEBUG_printf(("6%s: %d bytes:", prefix
, bytes
));
4016 snprintf(line
, sizeof(line
), "6%s: ", prefix
);
4017 start
= line
+ strlen(line
);
4019 for (i
= 0; i
< bytes
; i
+= 16)
4021 for (j
= 0, ptr
= start
; j
< 16 && (i
+ j
) < bytes
; j
++, ptr
+= 2)
4022 snprintf(ptr
, 3, "%02X", buffer
[i
+ j
] & 255);
4026 memcpy(ptr
, " ", 3);
4031 memcpy(ptr
, " ", 3);
4034 for (j
= 0; j
< 16 && (i
+ j
) < bytes
; j
++)
4036 ch
= buffer
[i
+ j
] & 255;
4038 if (ch
< ' ' || ch
>= 127)
4052 * 'http_read()' - Read a buffer from a HTTP connection.
4054 * This function does the low-level read from the socket, retrying and timing
4058 static ssize_t
/* O - Number of bytes read or -1 on error */
4059 http_read(http_t
*http
, /* I - HTTP connection */
4060 char *buffer
, /* I - Buffer */
4061 size_t length
) /* I - Maximum bytes to read */
4063 ssize_t bytes
; /* Bytes read */
4066 DEBUG_printf(("http_read(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
4068 if (!http
->blocking
|| http
->timeout_value
> 0.0)
4070 while (!httpWait(http
, http
->wait_value
))
4072 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
4075 DEBUG_puts("2http_read: Timeout.");
4080 DEBUG_printf(("2http_read: Reading %d bytes into buffer.", (int)length
));
4086 bytes
= _httpTLSRead(http
, buffer
, (int)length
);
4088 #endif /* HAVE_SSL */
4089 bytes
= recv(http
->fd
, buffer
, length
, 0);
4094 if (WSAGetLastError() != WSAEINTR
)
4096 http
->error
= WSAGetLastError();
4099 else if (WSAGetLastError() == WSAEWOULDBLOCK
)
4101 if (!http
->timeout_cb
||
4102 !(*http
->timeout_cb
)(http
, http
->timeout_data
))
4104 http
->error
= WSAEWOULDBLOCK
;
4109 DEBUG_printf(("2http_read: %s", strerror(errno
)));
4111 if (errno
== EWOULDBLOCK
|| errno
== EAGAIN
)
4113 if (http
->timeout_cb
&& !(*http
->timeout_cb
)(http
, http
->timeout_data
))
4115 http
->error
= errno
;
4118 else if (!http
->timeout_cb
&& errno
!= EAGAIN
)
4120 http
->error
= errno
;
4124 else if (errno
!= EINTR
)
4126 http
->error
= errno
;
4134 DEBUG_printf(("2http_read: Read " CUPS_LLFMT
" bytes into buffer.",
4135 CUPS_LLCAST bytes
));
4138 http_debug_hex("http_read", buffer
, (int)bytes
);
4144 if (WSAGetLastError() == WSAEINTR
)
4147 http
->error
= WSAGetLastError();
4149 if (errno
== EINTR
|| (errno
== EAGAIN
&& !http
->timeout_cb
))
4152 http
->error
= errno
;
4155 else if (bytes
== 0)
4157 http
->error
= EPIPE
;
4166 * 'http_read_buffered()' - Do a buffered read from a HTTP connection.
4168 * This function reads data from the HTTP buffer or from the socket, as needed.
4171 static ssize_t
/* O - Number of bytes read or -1 on error */
4172 http_read_buffered(http_t
*http
, /* I - HTTP connection */
4173 char *buffer
, /* I - Buffer */
4174 size_t length
) /* I - Maximum bytes to read */
4176 ssize_t bytes
; /* Bytes read */
4179 DEBUG_printf(("http_read_buffered(http=%p, buffer=%p, length=" CUPS_LLFMT
") used=%d", (void *)http
, (void *)buffer
, CUPS_LLCAST length
, http
->used
));
4183 if (length
> (size_t)http
->used
)
4184 bytes
= (ssize_t
)http
->used
;
4186 bytes
= (ssize_t
)length
;
4188 DEBUG_printf(("2http_read: Grabbing %d bytes from input buffer.",
4191 memcpy(buffer
, http
->buffer
, (size_t)bytes
);
4192 http
->used
-= (int)bytes
;
4195 memmove(http
->buffer
, http
->buffer
+ bytes
, (size_t)http
->used
);
4198 bytes
= http_read(http
, buffer
, length
);
4205 * 'http_read_chunk()' - Read a chunk from a HTTP connection.
4207 * This function reads and validates the chunk length, then does a buffered read
4208 * returning the number of bytes placed in the buffer.
4211 static ssize_t
/* O - Number of bytes read or -1 on error */
4212 http_read_chunk(http_t
*http
, /* I - HTTP connection */
4213 char *buffer
, /* I - Buffer */
4214 size_t length
) /* I - Maximum bytes to read */
4216 DEBUG_printf(("http_read_chunk(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
4218 if (http
->data_remaining
<= 0)
4220 char len
[32]; /* Length string */
4222 if (!httpGets(len
, sizeof(len
), http
))
4224 DEBUG_puts("1http_read_chunk: Could not get chunk length.");
4230 DEBUG_puts("1http_read_chunk: Blank chunk length, trying again...");
4231 if (!httpGets(len
, sizeof(len
), http
))
4233 DEBUG_puts("1http_read_chunk: Could not get chunk length.");
4238 http
->data_remaining
= strtoll(len
, NULL
, 16);
4240 if (http
->data_remaining
< 0)
4242 DEBUG_printf(("1http_read_chunk: Negative chunk length \"%s\" ("
4243 CUPS_LLFMT
")", len
, CUPS_LLCAST http
->data_remaining
));
4247 DEBUG_printf(("2http_read_chunk: Got chunk length \"%s\" (" CUPS_LLFMT
")",
4248 len
, CUPS_LLCAST http
->data_remaining
));
4250 if (http
->data_remaining
== 0)
4253 * 0-length chunk, grab trailing blank line...
4256 httpGets(len
, sizeof(len
), http
);
4260 DEBUG_printf(("2http_read_chunk: data_remaining=" CUPS_LLFMT
,
4261 CUPS_LLCAST http
->data_remaining
));
4263 if (http
->data_remaining
<= 0)
4265 else if (length
> (size_t)http
->data_remaining
)
4266 length
= (size_t)http
->data_remaining
;
4268 return (http_read_buffered(http
, buffer
, length
));
4273 * 'http_send()' - Send a request with all fields and the trailing blank line.
4276 static int /* O - 0 on success, non-zero on error */
4277 http_send(http_t
*http
, /* I - HTTP connection */
4278 http_state_t request
, /* I - Request code */
4279 const char *uri
) /* I - URI */
4281 int i
; /* Looping var */
4282 char buf
[1024]; /* Encoded URI buffer */
4283 const char *value
; /* Field value */
4284 static const char * const codes
[] = /* Request code strings */
4304 DEBUG_printf(("4http_send(http=%p, request=HTTP_%s, uri=\"%s\")", (void *)http
, codes
[request
], uri
));
4306 if (http
== NULL
|| uri
== NULL
)
4310 * Set the User-Agent field if it isn't already...
4313 if (!http
->fields
[HTTP_FIELD_USER_AGENT
])
4315 if (http
->default_fields
[HTTP_FIELD_USER_AGENT
])
4316 httpSetField(http
, HTTP_FIELD_USER_AGENT
, http
->default_fields
[HTTP_FIELD_USER_AGENT
]);
4318 httpSetField(http
, HTTP_FIELD_USER_AGENT
, cupsUserAgent());
4322 * Set the Accept-Encoding field if it isn't already...
4325 if (!http
->fields
[HTTP_FIELD_ACCEPT_ENCODING
] && http
->default_fields
[HTTP_FIELD_ACCEPT_ENCODING
])
4326 httpSetField(http
, HTTP_FIELD_ACCEPT_ENCODING
, http
->default_fields
[HTTP_FIELD_ACCEPT_ENCODING
]);
4329 * Encode the URI as needed...
4332 _httpEncodeURI(buf
, uri
, sizeof(buf
));
4335 * See if we had an error the last time around; if so, reconnect...
4338 if (http
->fd
< 0 || http
->status
== HTTP_STATUS_ERROR
||
4339 http
->status
>= HTTP_STATUS_BAD_REQUEST
)
4341 DEBUG_printf(("5http_send: Reconnecting, fd=%d, status=%d, tls_upgrade=%d",
4342 http
->fd
, http
->status
, http
->tls_upgrade
));
4344 if (httpReconnect2(http
, 30000, NULL
))
4349 * Flush any written data that is pending...
4354 if (httpFlushWrite(http
) < 0)
4355 if (httpReconnect2(http
, 30000, NULL
))
4360 * Send the request header...
4363 http
->state
= request
;
4364 http
->data_encoding
= HTTP_ENCODING_FIELDS
;
4366 if (request
== HTTP_STATE_POST
|| request
== HTTP_STATE_PUT
)
4369 http
->status
= HTTP_STATUS_CONTINUE
;
4372 if (http
->encryption
== HTTP_ENCRYPTION_REQUIRED
&& !http
->tls
)
4374 httpSetField(http
, HTTP_FIELD_CONNECTION
, "Upgrade");
4375 httpSetField(http
, HTTP_FIELD_UPGRADE
, "TLS/1.2,TLS/1.1,TLS/1.0");
4377 #endif /* HAVE_SSL */
4379 if (httpPrintf(http
, "%s %s HTTP/1.1\r\n", codes
[request
], buf
) < 1)
4381 http
->status
= HTTP_STATUS_ERROR
;
4385 for (i
= 0; i
< HTTP_FIELD_MAX
; i
++)
4386 if ((value
= httpGetField(http
, i
)) != NULL
&& *value
)
4388 DEBUG_printf(("5http_send: %s: %s", http_fields
[i
], value
));
4390 if (i
== HTTP_FIELD_HOST
)
4392 if (httpPrintf(http
, "Host: %s:%d\r\n", value
,
4393 httpAddrPort(http
->hostaddr
)) < 1)
4395 http
->status
= HTTP_STATUS_ERROR
;
4399 else if (httpPrintf(http
, "%s: %s\r\n", http_fields
[i
], value
) < 1)
4401 http
->status
= HTTP_STATUS_ERROR
;
4407 if (httpPrintf(http
, "Cookie: $Version=0; %s\r\n", http
->cookie
) < 1)
4409 http
->status
= HTTP_STATUS_ERROR
;
4413 DEBUG_printf(("5http_send: expect=%d, mode=%d, state=%d", http
->expect
,
4414 http
->mode
, http
->state
));
4416 if (http
->expect
== HTTP_STATUS_CONTINUE
&& http
->mode
== _HTTP_MODE_CLIENT
&&
4417 (http
->state
== HTTP_STATE_POST_RECV
||
4418 http
->state
== HTTP_STATE_PUT_RECV
))
4419 if (httpPrintf(http
, "Expect: 100-continue\r\n") < 1)
4421 http
->status
= HTTP_STATUS_ERROR
;
4425 if (httpPrintf(http
, "\r\n") < 1)
4427 http
->status
= HTTP_STATUS_ERROR
;
4431 if (httpFlushWrite(http
) < 0)
4434 http_set_length(http
);
4435 httpClearFields(http
);
4438 * The Kerberos and AuthRef authentication strings can only be used once...
4441 if (http
->fields
[HTTP_FIELD_AUTHORIZATION
] && http
->authstring
&&
4442 (!strncmp(http
->authstring
, "Negotiate", 9) ||
4443 !strncmp(http
->authstring
, "AuthRef", 7)))
4445 http
->_authstring
[0] = '\0';
4447 if (http
->authstring
!= http
->_authstring
)
4448 free(http
->authstring
);
4450 http
->authstring
= http
->_authstring
;
4458 * 'http_set_length()' - Set the data_encoding and data_remaining values.
4461 static off_t
/* O - Remainder or -1 on error */
4462 http_set_length(http_t
*http
) /* I - Connection */
4464 off_t remaining
; /* Remainder */
4467 DEBUG_printf(("http_set_length(http=%p) mode=%d state=%s", (void *)http
, http
->mode
, httpStateString(http
->state
)));
4469 if ((remaining
= httpGetLength2(http
)) >= 0)
4471 if (http
->mode
== _HTTP_MODE_SERVER
&&
4472 http
->state
!= HTTP_STATE_GET_SEND
&&
4473 http
->state
!= HTTP_STATE_PUT
&&
4474 http
->state
!= HTTP_STATE_POST
&&
4475 http
->state
!= HTTP_STATE_POST_SEND
)
4477 DEBUG_puts("1http_set_length: Not setting data_encoding/remaining.");
4481 if (!_cups_strcasecmp(httpGetField(http
, HTTP_FIELD_TRANSFER_ENCODING
), "chunked"))
4483 DEBUG_puts("1http_set_length: Setting data_encoding to "
4484 "HTTP_ENCODING_CHUNKED.");
4485 http
->data_encoding
= HTTP_ENCODING_CHUNKED
;
4489 DEBUG_puts("1http_set_length: Setting data_encoding to "
4490 "HTTP_ENCODING_LENGTH.");
4491 http
->data_encoding
= HTTP_ENCODING_LENGTH
;
4494 DEBUG_printf(("1http_set_length: Setting data_remaining to " CUPS_LLFMT
".",
4495 CUPS_LLCAST remaining
));
4496 http
->data_remaining
= remaining
;
4498 if (remaining
<= INT_MAX
)
4499 http
->_data_remaining
= (int)remaining
;
4501 http
->_data_remaining
= INT_MAX
;
4508 * 'http_set_timeout()' - Set the socket timeout values.
4512 http_set_timeout(int fd
, /* I - File descriptor */
4513 double timeout
) /* I - Timeout in seconds */
4516 DWORD tv
= (DWORD
)(timeout
* 1000);
4517 /* Timeout in milliseconds */
4519 setsockopt(fd
, SOL_SOCKET
, SO_RCVTIMEO
, CUPS_SOCAST
&tv
, sizeof(tv
));
4520 setsockopt(fd
, SOL_SOCKET
, SO_SNDTIMEO
, CUPS_SOCAST
&tv
, sizeof(tv
));
4523 struct timeval tv
; /* Timeout in secs and usecs */
4525 tv
.tv_sec
= (int)timeout
;
4526 tv
.tv_usec
= (int)(1000000 * fmod(timeout
, 1.0));
4528 setsockopt(fd
, SOL_SOCKET
, SO_RCVTIMEO
, CUPS_SOCAST
&tv
, sizeof(tv
));
4529 setsockopt(fd
, SOL_SOCKET
, SO_SNDTIMEO
, CUPS_SOCAST
&tv
, sizeof(tv
));
4535 * 'http_set_wait()' - Set the default wait value for reads.
4539 http_set_wait(http_t
*http
) /* I - HTTP connection */
4543 http
->wait_value
= (int)(http
->timeout_value
* 1000);
4545 if (http
->wait_value
<= 0)
4546 http
->wait_value
= 60000;
4549 http
->wait_value
= 10000;
4555 * 'http_tls_upgrade()' - Force upgrade to TLS encryption.
4558 static int /* O - Status of connection */
4559 http_tls_upgrade(http_t
*http
) /* I - HTTP connection */
4561 int ret
; /* Return value */
4562 http_t myhttp
; /* Local copy of HTTP data */
4565 DEBUG_printf(("7http_tls_upgrade(%p)", (void *)http
));
4568 * Flush the connection to make sure any previous "Upgrade" message
4575 * Copy the HTTP data to a local variable so we can do the OPTIONS
4576 * request without interfering with the existing request data...
4579 memcpy(&myhttp
, http
, sizeof(myhttp
));
4582 * Send an OPTIONS request to the server, requiring SSL or TLS
4583 * encryption on the link...
4586 http
->tls_upgrade
= 1;
4587 memset(http
->fields
, 0, sizeof(http
->fields
));
4588 http
->expect
= (http_status_t
)0;
4590 if (http
->hostname
[0] == '/')
4591 httpSetField(http
, HTTP_FIELD_HOST
, "localhost");
4593 httpSetField(http
, HTTP_FIELD_HOST
, http
->hostname
);
4595 httpSetField(http
, HTTP_FIELD_CONNECTION
, "upgrade");
4596 httpSetField(http
, HTTP_FIELD_UPGRADE
, "TLS/1.2,TLS/1.1,TLS/1.0");
4598 if ((ret
= httpOptions(http
, "*")) == 0)
4601 * Wait for the secure connection...
4604 while (httpUpdate(http
) == HTTP_STATUS_CONTINUE
);
4608 * Restore the HTTP request data...
4611 memcpy(http
->_fields
, myhttp
._fields
, sizeof(http
->_fields
));
4612 memcpy(http
->fields
, myhttp
.fields
, sizeof(http
->fields
));
4614 http
->data_encoding
= myhttp
.data_encoding
;
4615 http
->data_remaining
= myhttp
.data_remaining
;
4616 http
->_data_remaining
= myhttp
._data_remaining
;
4617 http
->expect
= myhttp
.expect
;
4618 http
->digest_tries
= myhttp
.digest_tries
;
4619 http
->tls_upgrade
= 0;
4622 * See if we actually went secure...
4628 * Server does not support HTTP upgrade...
4631 DEBUG_puts("8http_tls_upgrade: Server does not support HTTP upgrade!");
4633 _cupsSetError(IPP_STATUS_ERROR_CUPS_PKI
, _("Encryption is not supported."), 1);
4634 httpAddrClose(NULL
, http
->fd
);
4643 #endif /* HAVE_SSL */
4647 * 'http_write()' - Write a buffer to a HTTP connection.
4650 static ssize_t
/* O - Number of bytes written */
4651 http_write(http_t
*http
, /* I - HTTP connection */
4652 const char *buffer
, /* I - Buffer for data */
4653 size_t length
) /* I - Number of bytes to write */
4655 ssize_t tbytes
, /* Total bytes sent */
4656 bytes
; /* Bytes sent */
4659 DEBUG_printf(("2http_write(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
4665 DEBUG_printf(("3http_write: About to write %d bytes.", (int)length
));
4667 if (http
->timeout_value
> 0.0)
4670 struct pollfd pfd
; /* Polled file descriptor */
4672 fd_set output_set
; /* Output ready for write? */
4673 struct timeval timeout
; /* Timeout value */
4674 #endif /* HAVE_POLL */
4675 int nfds
; /* Result from select()/poll() */
4681 pfd
.events
= POLLOUT
;
4683 while ((nfds
= poll(&pfd
, 1, http
->wait_value
)) < 0 &&
4684 (errno
== EINTR
|| errno
== EAGAIN
))
4690 FD_ZERO(&output_set
);
4691 FD_SET(http
->fd
, &output_set
);
4693 timeout
.tv_sec
= http
->wait_value
/ 1000;
4694 timeout
.tv_usec
= 1000 * (http
->wait_value
% 1000);
4696 nfds
= select(http
->fd
+ 1, NULL
, &output_set
, NULL
, &timeout
);
4699 while (nfds
< 0 && (WSAGetLastError() == WSAEINTR
||
4700 WSAGetLastError() == WSAEWOULDBLOCK
));
4702 while (nfds
< 0 && (errno
== EINTR
|| errno
== EAGAIN
));
4703 # endif /* _WIN32 */
4704 #endif /* HAVE_POLL */
4708 http
->error
= errno
;
4711 else if (nfds
== 0 && (!http
->timeout_cb
|| !(*http
->timeout_cb
)(http
, http
->timeout_data
)))
4714 http
->error
= WSAEWOULDBLOCK
;
4716 http
->error
= EWOULDBLOCK
;
4726 bytes
= _httpTLSWrite(http
, buffer
, (int)length
);
4728 #endif /* HAVE_SSL */
4729 bytes
= send(http
->fd
, buffer
, length
, 0);
4731 DEBUG_printf(("3http_write: Write of " CUPS_LLFMT
" bytes returned "
4732 CUPS_LLFMT
".", CUPS_LLCAST length
, CUPS_LLCAST bytes
));
4737 if (WSAGetLastError() == WSAEINTR
)
4739 else if (WSAGetLastError() == WSAEWOULDBLOCK
)
4741 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
4744 http
->error
= WSAGetLastError();
4746 else if (WSAGetLastError() != http
->error
&&
4747 WSAGetLastError() != WSAECONNRESET
)
4749 http
->error
= WSAGetLastError();
4756 else if (errno
== EWOULDBLOCK
|| errno
== EAGAIN
)
4758 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
4760 else if (!http
->timeout_cb
&& errno
== EAGAIN
)
4763 http
->error
= errno
;
4765 else if (errno
!= http
->error
&& errno
!= ECONNRESET
)
4767 http
->error
= errno
;
4772 DEBUG_printf(("3http_write: error writing data (%s).",
4773 strerror(http
->error
)));
4780 length
-= (size_t)bytes
;
4784 http_debug_hex("http_write", buffer
- tbytes
, (int)tbytes
);
4787 DEBUG_printf(("3http_write: Returning " CUPS_LLFMT
".", CUPS_LLCAST tbytes
));
4794 * 'http_write_chunk()' - Write a chunked buffer.
4797 static ssize_t
/* O - Number bytes written */
4798 http_write_chunk(http_t
*http
, /* I - HTTP connection */
4799 const char *buffer
, /* I - Buffer to write */
4800 size_t length
) /* I - Length of buffer */
4802 char header
[16]; /* Chunk header */
4803 ssize_t bytes
; /* Bytes written */
4806 DEBUG_printf(("7http_write_chunk(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
4809 * Write the chunk header, data, and trailer.
4812 snprintf(header
, sizeof(header
), "%x\r\n", (unsigned)length
);
4813 if (http_write(http
, header
, strlen(header
)) < 0)
4815 DEBUG_puts("8http_write_chunk: http_write of length failed.");
4819 if ((bytes
= http_write(http
, buffer
, length
)) < 0)
4821 DEBUG_puts("8http_write_chunk: http_write of buffer failed.");
4825 if (http_write(http
, "\r\n", 2) < 0)
4827 DEBUG_puts("8http_write_chunk: http_write of CR LF failed.");