4 * HTTP routines for the Common UNIX Printing System (CUPS).
6 * Copyright 1997-2005 by Easy Software Products, all rights reserved.
8 * These coded instructions, statements, and computer programs are the
9 * property of Easy Software Products and are protected by Federal
10 * copyright law. Distribution and use rights are outlined in the file
11 * "LICENSE.txt" which should have been included with this file. If this
12 * file is missing or damaged please contact Easy Software Products
15 * Attn: CUPS Licensing Information
16 * Easy Software Products
17 * 44141 Airport View Drive, Suite 204
18 * Hollywood, Maryland 20636 USA
20 * Voice: (301) 373-9600
21 * EMail: cups-info@cups.org
22 * WWW: http://www.cups.org
24 * This file is subject to the Apple OS-Developed Software exception.
28 * httpCheck() - Check to see if there is a pending response from
30 * httpClearCookie() - Clear the cookie value(s).
31 * httpClose() - Close an HTTP connection...
32 * httpConnect() - Connect to a HTTP server.
33 * httpConnectEncrypt() - Connect to a HTTP server using encryption.
34 * httpDelete() - Send a DELETE request to the server.
35 * httpEncryption() - Set the required encryption on the link.
36 * httpFlush() - Flush data from a HTTP connection.
37 * httpFlushWrite() - Flush data in write buffer.
38 * httpGet() - Send a GET request to the server.
39 * httpGetLength() - Get the amount of data remaining from the
40 * content-length or transfer-encoding fields.
41 * httpGetLength2() - Get the amount of data remaining from the
42 * content-length or transfer-encoding fields.
43 * httpGetSubField() - Get a sub-field value.
44 * httpGets() - Get a line of text from a HTTP connection.
45 * httpHead() - Send a HEAD request to the server.
46 * httpInitialize() - Initialize the HTTP interface library and set the
47 * default HTTP proxy (if any).
48 * httpOptions() - Send an OPTIONS request to the server.
49 * httpPost() - Send a POST request to the server.
50 * httpPrintf() - Print a formatted string to a HTTP connection.
51 * httpPut() - Send a PUT request to the server.
52 * httpRead() - Read data from a HTTP connection.
53 * _httpReadCDSA() - Read function for CDSA decryption code.
54 * httpReconnect() - Reconnect to a HTTP server...
55 * httpSetCookie() - Set the cookie value(s)...
56 * httpSetField() - Set the value of an HTTP header.
57 * httpSetLength() - Set the content-length and transfer-encoding.
58 * httpTrace() - Send an TRACE request to the server.
59 * httpUpdate() - Update the current HTTP state for incoming data.
60 * httpWait() - Wait for data available on a connection.
61 * httpWrite() - Write data to a HTTP connection.
62 * _httpWriteCDSA() - Write function for CDSA encryption code.
63 * http_field() - Return the field index for a field name.
64 * http_read_ssl() - Read from a SSL/TLS connection.
65 * http_send() - Send a request with all fields and the trailing
67 * http_setup_ssl() - Set up SSL/TLS on a connection.
68 * http_shutdown_ssl() - Shut down SSL/TLS on a connection.
69 * http_upgrade() - Force upgrade to TLS encryption.
70 * http_wait() - Wait for data available on a connection.
71 * http_write() - Write data to a connection.
72 * http_write_ssl() - Write to a SSL/TLS connection.
76 * Include necessary headers...
79 #include "http-private.h"
87 # include <sys/time.h>
88 # include <sys/resource.h>
93 * Some operating systems have done away with the Fxxxx constants for
94 * the fcntl() call; this works around that "feature"...
98 # define FNONBLK O_NONBLOCK
106 static http_field_t
http_field(const char *name
);
107 static int http_send(http_t
*http
, http_state_t request
,
109 static int http_wait(http_t
*http
, int msec
);
110 static int http_write(http_t
*http
, const char *buffer
,
112 static int http_write_chunk(http_t
*http
, const char *buffer
,
115 static int http_read_ssl(http_t
*http
, char *buf
, int len
);
116 static int http_setup_ssl(http_t
*http
);
117 static void http_shutdown_ssl(http_t
*http
);
118 static int http_upgrade(http_t
*http
);
119 static int http_write_ssl(http_t
*http
, const char *buf
, int len
);
120 #endif /* HAVE_SSL */
127 static const char * const http_fields
[] =
144 "If-Unmodified-since",
160 * 'httpCheck()' - Check to see if there is a pending response from the server.
163 int /* O - 0 = no data, 1 = data available */
164 httpCheck(http_t
*http
) /* I - HTTP connection */
166 return (httpWait(http
, 0));
171 * 'httpClearCookie()' - Clear the cookie value(s).
173 * @since CUPS 1.1.19@
177 httpClearCookie(http_t
*http
) /* I - Connection */
191 * 'httpClose()' - Close an HTTP connection...
195 httpClose(http_t
*http
) /* I - Connection to close */
197 DEBUG_printf(("httpClose(http=%p)\n", http
));
202 httpAddrFreeList(http
->addrlist
);
205 free(http
->input_set
);
212 http_shutdown_ssl(http
);
213 #endif /* HAVE_SSL */
216 closesocket(http
->fd
);
226 * 'httpConnect()' - Connect to a HTTP server.
229 http_t
* /* O - New HTTP connection */
230 httpConnect(const char *host
, /* I - Host to connect to */
231 int port
) /* I - Port number */
233 http_encryption_t encryption
; /* Type of encryption to use */
237 * Set the default encryption status...
241 encryption
= HTTP_ENCRYPT_ALWAYS
;
243 encryption
= HTTP_ENCRYPT_IF_REQUESTED
;
245 return (httpConnectEncrypt(host
, port
, encryption
));
250 * 'httpConnectEncrypt()' - Connect to a HTTP server using encryption.
253 http_t
* /* O - New HTTP connection */
255 const char *host
, /* I - Host to connect to */
256 int port
, /* I - Port number */
257 http_encryption_t encryption
) /* I - Type of encryption to use */
259 http_t
*http
; /* New HTTP connection */
260 http_addrlist_t
*addrlist
; /* Host address data */
261 char service
[255]; /* Service name */
264 DEBUG_printf(("httpConnectEncrypt(host=\"%s\", port=%d, encryption=%d)\n",
265 host
? host
: "(null)", port
, encryption
));
276 sprintf(service
, "%d", port
);
278 if ((addrlist
= httpAddrGetList(host
, AF_UNSPEC
, service
)) == NULL
)
282 * Allocate memory for the structure...
285 http
= calloc(sizeof(http_t
), 1);
289 http
->version
= HTTP_1_1
;
291 http
->activity
= time(NULL
);
295 * Set the encryption status...
298 if (port
== 443) /* Always use encryption for https */
299 http
->encryption
= HTTP_ENCRYPT_ALWAYS
;
301 http
->encryption
= encryption
;
304 * Loop through the addresses we have until one of them connects...
307 strlcpy(http
->hostname
, host
, sizeof(http
->hostname
));
310 * Connect to the remote system...
313 http
->addrlist
= addrlist
;
315 if (!httpReconnect(http
))
319 * Could not connect to any known address - bail out!
322 httpAddrFreeList(addrlist
);
331 * 'httpDelete()' - Send a DELETE request to the server.
334 int /* O - Status of call (0 = success) */
335 httpDelete(http_t
*http
, /* I - HTTP data */
336 const char *uri
) /* I - URI to delete */
338 return (http_send(http
, HTTP_DELETE
, uri
));
343 * 'httpEncryption()' - Set the required encryption on the link.
346 int /* O - -1 on error, 0 on success */
347 httpEncryption(http_t
*http
, /* I - HTTP data */
348 http_encryption_t e
) /* I - New encryption preference */
350 DEBUG_printf(("httpEncryption(http=%p, e=%d)\n", http
, e
));
356 http
->encryption
= e
;
358 if ((http
->encryption
== HTTP_ENCRYPT_ALWAYS
&& !http
->tls
) ||
359 (http
->encryption
== HTTP_ENCRYPT_NEVER
&& http
->tls
))
360 return (httpReconnect(http
));
361 else if (http
->encryption
== HTTP_ENCRYPT_REQUIRED
&& !http
->tls
)
362 return (http_upgrade(http
));
366 if (e
== HTTP_ENCRYPT_ALWAYS
|| e
== HTTP_ENCRYPT_REQUIRED
)
370 #endif /* HAVE_SSL */
375 * 'httpFlush()' - Flush data from a HTTP connection.
379 httpFlush(http_t
*http
) /* I - HTTP data */
381 char buffer
[8192]; /* Junk buffer */
384 DEBUG_printf(("httpFlush(http=%p), state=%d\n", http
, http
->state
));
386 while (httpRead(http
, buffer
, sizeof(buffer
)) > 0);
391 * 'httpFlushWrite()' - Flush data in write buffer.
396 int /* O - Bytes written or -1 on error */
397 httpFlushWrite(http_t
*http
) /* I - HTTP data */
399 int bytes
; /* Bytes written */
402 DEBUG_printf(("httpFlushWrite(http=%p)\n", http
));
404 if (!http
|| !http
->wused
)
407 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
408 bytes
= http_write_chunk(http
, http
->wbuffer
, http
->wused
);
410 bytes
= http_write(http
, http
->wbuffer
, http
->wused
);
419 * 'httpGet()' - Send a GET request to the server.
422 int /* O - Status of call (0 = success) */
423 httpGet(http_t
*http
, /* I - HTTP data */
424 const char *uri
) /* I - URI to get */
426 return (http_send(http
, HTTP_GET
, uri
));
431 * 'httpGetSubField()' - Get a sub-field value.
436 char * /* O - Value or NULL */
437 httpGetSubField(http_t
*http
, /* I - HTTP data */
438 http_field_t field
, /* I - Field index */
439 const char *name
, /* I - Name of sub-field */
440 char *value
) /* O - Value string */
442 return (httpGetSubField2(http
, field
, name
, value
, HTTP_MAX_VALUE
));
447 * 'httpGetSubField2()' - Get a sub-field value.
452 char * /* O - Value or NULL */
453 httpGetSubField2(http_t
*http
, /* I - HTTP data */
454 http_field_t field
, /* I - Field index */
455 const char *name
, /* I - Name of sub-field */
456 char *value
, /* O - Value string */
457 int valuelen
) /* I - Size of value buffer */
459 const char *fptr
; /* Pointer into field */
460 char temp
[HTTP_MAX_VALUE
], /* Temporary buffer for name */
461 *ptr
, /* Pointer into string buffer */
462 *end
; /* End of value buffer */
464 DEBUG_printf(("httpGetSubField2(http=%p, field=%d, name=\"%s\", value=%p, valuelen=%d)\n",
465 http
, field
, name
, value
, valuelen
));
467 if (!http
|| !name
|| !value
|| valuelen
< 2 ||
468 field
< HTTP_FIELD_ACCEPT_LANGUAGE
||
469 field
> HTTP_FIELD_WWW_AUTHENTICATE
)
472 end
= value
+ valuelen
- 1;
474 for (fptr
= http
->fields
[field
]; *fptr
;)
477 * Skip leading whitespace...
480 while (isspace(*fptr
& 255))
490 * Get the sub-field name...
494 *fptr
&& *fptr
!= '=' && !isspace(*fptr
& 255) &&
495 ptr
< (temp
+ sizeof(temp
) - 1);
500 DEBUG_printf(("httpGetSubField: name=\"%s\"\n", temp
));
503 * Skip trailing chars up to the '='...
506 while (isspace(*fptr
& 255))
516 * Skip = and leading whitespace...
521 while (isspace(*fptr
& 255))
527 * Read quoted string...
530 for (ptr
= value
, fptr
++;
531 *fptr
&& *fptr
!= '\"' && ptr
< end
;
536 while (*fptr
&& *fptr
!= '\"')
545 * Read unquoted string...
549 *fptr
&& !isspace(*fptr
& 255) && *fptr
!= ',' && ptr
< end
;
554 while (*fptr
&& !isspace(*fptr
& 255) && *fptr
!= ',')
558 DEBUG_printf(("httpGetSubField: value=\"%s\"\n", value
));
561 * See if this is the one...
564 if (!strcmp(name
, temp
))
575 * 'httpGetLength()' - Get the amount of data remaining from the
576 * content-length or transfer-encoding fields.
578 * This function is deprecated and will not return lengths larger than
579 * 2^31 - 1; use httpGetLength2() instead.
584 int /* O - Content length */
585 httpGetLength(http_t
*http
) /* I - HTTP data */
588 * Get the read content length and return the 32-bit value.
591 httpGetLength2(http
);
593 return (http
->_data_remaining
);
598 * 'httpGetLength2()' - Get the amount of data remaining from the
599 * content-length or transfer-encoding fields.
601 * This function returns the complete content length, even for
602 * content larger than 2^31 - 1.
605 off_t
/* O - Content length */
606 httpGetLength2(http_t
*http
) /* I - HTTP data */
608 DEBUG_printf(("httpGetLength2(http=%p), state=%d\n", http
, http
->state
));
610 if (!strcasecmp(http
->fields
[HTTP_FIELD_TRANSFER_ENCODING
], "chunked"))
612 DEBUG_puts("httpGetLength2: chunked request!");
614 http
->data_encoding
= HTTP_ENCODE_CHUNKED
;
615 http
->data_remaining
= 0;
619 http
->data_encoding
= HTTP_ENCODE_LENGTH
;
622 * The following is a hack for HTTP servers that don't send a
623 * content-length or transfer-encoding field...
625 * If there is no content-length then the connection must close
626 * after the transfer is complete...
629 if (http
->fields
[HTTP_FIELD_CONTENT_LENGTH
][0] == '\0')
630 http
->data_remaining
= 2147483647;
632 http
->data_remaining
= strtoll(http
->fields
[HTTP_FIELD_CONTENT_LENGTH
],
635 DEBUG_printf(("httpGetLength2: content_length=" CUPS_LLFMT
"\n",
636 CUPS_LLCAST http
->data_remaining
));
639 if (http
->data_remaining
<= INT_MAX
)
640 http
->_data_remaining
= (int)http
->data_remaining
;
642 http
->_data_remaining
= INT_MAX
;
644 return (http
->data_remaining
);
649 * 'httpGets()' - Get a line of text from a HTTP connection.
652 char * /* O - Line or NULL */
653 httpGets(char *line
, /* I - Line to read into */
654 int length
, /* I - Max length of buffer */
655 http_t
*http
) /* I - HTTP data */
657 char *lineptr
, /* Pointer into line */
658 *lineend
, /* End of line */
659 *bufptr
, /* Pointer into input buffer */
660 *bufend
; /* Pointer to end of buffer */
661 int bytes
, /* Number of bytes read */
662 eol
; /* End-of-line? */
665 DEBUG_printf(("httpGets(line=%p, length=%d, http=%p)\n", line
, length
, http
));
667 if (http
== NULL
|| line
== NULL
)
671 * Read a line from the buffer...
675 lineend
= line
+ length
- 1;
678 while (lineptr
< lineend
)
681 * Pre-load the buffer as needed...
690 while (http
->used
== 0)
693 * No newline; see if there is more data to be read...
696 if (!http
->blocking
&& !http_wait(http
, 1000))
701 bytes
= http_read_ssl(http
, http
->buffer
+ http
->used
,
702 HTTP_MAX_BUFFER
- http
->used
);
704 #endif /* HAVE_SSL */
705 bytes
= recv(http
->fd
, http
->buffer
+ http
->used
,
706 HTTP_MAX_BUFFER
- http
->used
, 0);
708 DEBUG_printf(("httpGets: read %d bytes...\n", bytes
));
713 * Nope, can't get a line this time...
717 if (WSAGetLastError() != http
->error
)
719 http
->error
= WSAGetLastError();
723 DEBUG_printf(("httpGets: recv() error %d!\n", WSAGetLastError()));
725 DEBUG_printf(("httpGets: recv() error %d!\n", errno
));
729 else if (errno
!= http
->error
)
746 * Yup, update the amount used...
753 * Now copy as much of the current line as possible...
756 for (bufptr
= http
->buffer
, bufend
= http
->buffer
+ http
->used
;
757 lineptr
< lineend
&& bufptr
< bufend
;)
765 else if (*bufptr
== 0x0d)
768 *lineptr
++ = *bufptr
++;
771 http
->used
-= bufptr
- http
->buffer
;
773 memmove(http
->buffer
, bufptr
, http
->used
);
781 http
->activity
= time(NULL
);
785 DEBUG_printf(("httpGets: Returning \"%s\"\n", line
));
791 DEBUG_puts("httpGets: No new line available!");
798 * 'httpHead()' - Send a HEAD request to the server.
801 int /* O - Status of call (0 = success) */
802 httpHead(http_t
*http
, /* I - HTTP data */
803 const char *uri
) /* I - URI for head */
805 return (http_send(http
, HTTP_HEAD
, uri
));
810 * 'httpInitialize()' - Initialize the HTTP interface library and set the
811 * default HTTP proxy (if any).
819 struct timeval curtime
; /* Current time in microseconds */
821 int i
; /* Looping var */
822 unsigned char data
[1024]; /* Seed data */
823 #endif /* HAVE_LIBSSL */
826 WSADATA winsockdata
; /* WinSock data */
827 static int initialized
= 0; /* Has WinSock been initialized? */
831 WSAStartup(MAKEWORD(1,1), &winsockdata
);
832 #elif defined(HAVE_SIGSET)
833 sigset(SIGPIPE
, SIG_IGN
);
834 #elif defined(HAVE_SIGACTION)
835 struct sigaction action
; /* POSIX sigaction data */
839 * Ignore SIGPIPE signals...
842 memset(&action
, 0, sizeof(action
));
843 action
.sa_handler
= SIG_IGN
;
844 sigaction(SIGPIPE
, &action
, NULL
);
846 signal(SIGPIPE
, SIG_IGN
);
850 gnutls_global_init();
851 #endif /* HAVE_GNUTLS */
854 SSL_load_error_strings();
858 * Using the current time is a dubious random seed, but on some systems
859 * it is the best we can do (on others, this seed isn't even used...)
864 gettimeofday(&curtime
, NULL
);
865 srand(curtime
.tv_sec
+ curtime
.tv_usec
);
868 for (i
= 0; i
< sizeof(data
); i
++)
869 data
[i
] = rand(); /* Yes, this is a poor source of random data... */
871 RAND_seed(&data
, sizeof(data
));
872 #endif /* HAVE_LIBSSL */
877 * 'httpOptions()' - Send an OPTIONS request to the server.
880 int /* O - Status of call (0 = success) */
881 httpOptions(http_t
*http
, /* I - HTTP data */
882 const char *uri
) /* I - URI for options */
884 return (http_send(http
, HTTP_OPTIONS
, uri
));
889 * 'httpPost()' - Send a POST request to the server.
892 int /* O - Status of call (0 = success) */
893 httpPost(http_t
*http
, /* I - HTTP data */
894 const char *uri
) /* I - URI for post */
896 return (http_send(http
, HTTP_POST
, uri
));
901 * 'httpPrintf()' - Print a formatted string to a HTTP connection.
904 int /* O - Number of bytes written */
905 httpPrintf(http_t
*http
, /* I - HTTP data */
906 const char *format
, /* I - printf-style format string */
907 ...) /* I - Additional args as needed */
909 int bytes
; /* Number of bytes to write */
910 char buf
[16384]; /* Buffer for formatted string */
911 va_list ap
; /* Variable argument pointer */
914 DEBUG_printf(("httpPrintf(http=%p, format=\"%s\", ...)\n", http
, format
));
916 va_start(ap
, format
);
917 bytes
= vsnprintf(buf
, sizeof(buf
), format
, ap
);
920 DEBUG_printf(("httpPrintf: %s", buf
));
924 DEBUG_puts(" flushing existing data...");
926 if (httpFlushWrite(http
) < 0)
930 return (http_write(http
, buf
, bytes
));
935 * 'httpPut()' - Send a PUT request to the server.
938 int /* O - Status of call (0 = success) */
939 httpPut(http_t
*http
, /* I - HTTP data */
940 const char *uri
) /* I - URI to put */
942 return (http_send(http
, HTTP_PUT
, uri
));
947 * 'httpRead()' - Read data from a HTTP connection.
950 int /* O - Number of bytes read */
951 httpRead(http_t
*http
, /* I - HTTP data */
952 char *buffer
, /* I - Buffer for data */
953 int length
) /* I - Maximum number of bytes */
955 int bytes
; /* Bytes read */
956 char len
[32]; /* Length string */
959 DEBUG_printf(("httpRead(http=%p, buffer=%p, length=%d)\n",
960 http
, buffer
, length
));
962 if (http
== NULL
|| buffer
== NULL
)
965 http
->activity
= time(NULL
);
970 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
&&
971 http
->data_remaining
<= 0)
973 DEBUG_puts("httpRead: Getting chunk length...");
975 if (httpGets(len
, sizeof(len
), http
) == NULL
)
977 DEBUG_puts("httpRead: Could not get length!");
981 http
->data_remaining
= strtoll(len
, NULL
, 16);
982 if (http
->data_remaining
< 0)
984 DEBUG_puts("httpRead: Negative chunk length!");
989 DEBUG_printf(("httpRead: data_remaining=" CUPS_LLFMT
"\n",
990 CUPS_LLCAST http
->data_remaining
));
992 if (http
->data_remaining
<= 0)
995 * A zero-length chunk ends a transfer; unless we are reading POST
999 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
1000 httpGets(len
, sizeof(len
), http
);
1002 if (http
->state
== HTTP_POST_RECV
)
1005 http
->state
= HTTP_WAITING
;
1008 * Prevent future reads for this request...
1011 http
->data_encoding
= HTTP_ENCODE_LENGTH
;
1015 else if (length
> http
->data_remaining
)
1016 length
= http
->data_remaining
;
1018 if (http
->used
== 0 && length
<= 256)
1021 * Buffer small reads for better performance...
1024 if (!http
->blocking
&& !httpWait(http
, 1000))
1027 if (http
->data_remaining
> sizeof(http
->buffer
))
1028 bytes
= sizeof(http
->buffer
);
1030 bytes
= http
->data_remaining
;
1034 bytes
= http_read_ssl(http
, http
->buffer
, bytes
);
1036 #endif /* HAVE_SSL */
1038 DEBUG_printf(("httpRead: reading %d bytes from socket into buffer...\n",
1041 bytes
= recv(http
->fd
, http
->buffer
, bytes
, 0);
1043 DEBUG_printf(("httpRead: read %d bytes from socket into buffer...\n",
1052 http
->error
= WSAGetLastError();
1057 http
->error
= errno
;
1064 http
->error
= EPIPE
;
1071 if (length
> http
->used
)
1072 length
= http
->used
;
1076 DEBUG_printf(("httpRead: grabbing %d bytes from input buffer...\n", bytes
));
1078 memcpy(buffer
, http
->buffer
, length
);
1079 http
->used
-= length
;
1082 memmove(http
->buffer
, http
->buffer
+ length
, http
->used
);
1087 if (!http
->blocking
&& !httpWait(http
, 1000))
1090 bytes
= http_read_ssl(http
, buffer
, length
);
1092 #endif /* HAVE_SSL */
1095 if (!http
->blocking
&& !httpWait(http
, 1000))
1098 DEBUG_printf(("httpRead: reading %d bytes from socket...\n", length
));
1100 while ((bytes
= recv(http
->fd
, buffer
, length
, 0)) < 0)
1104 DEBUG_printf(("httpRead: read %d bytes from socket...\n", bytes
));
1109 http
->data_remaining
-= bytes
;
1111 if (http
->data_remaining
<= INT_MAX
)
1112 http
->_data_remaining
= (int)http
->data_remaining
;
1114 http
->_data_remaining
= INT_MAX
;
1119 http
->error
= WSAGetLastError();
1124 http
->error
= errno
;
1129 http
->error
= EPIPE
;
1133 if (http
->data_remaining
== 0)
1135 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
1136 httpGets(len
, sizeof(len
), http
);
1138 if (http
->data_encoding
!= HTTP_ENCODE_CHUNKED
)
1140 if (http
->state
== HTTP_POST_RECV
)
1143 http
->state
= HTTP_WAITING
;
1150 printf("httpRead: Read %d bytes:\n", bytes
);
1151 for (i
= 0; i
< bytes
; i
+= 16)
1155 for (j
= 0; j
< 16 && (i
+ j
) < bytes
; j
++)
1156 printf(" %02X", buffer
[i
+ j
] & 255);
1165 for (j
= 0; j
< 16 && (i
+ j
) < bytes
; j
++)
1167 ch
= buffer
[i
+ j
] & 255;
1169 if (ch
< ' ' || ch
== 127)
1183 #if defined(HAVE_SSL) && defined(HAVE_CDSASSL)
1185 * '_httpReadCDSA()' - Read function for CDSA decryption code.
1188 OSStatus
/* O - -1 on error, 0 on success */
1190 SSLConnectionRef connection
, /* I - SSL/TLS connection */
1191 void *data
, /* I - Data buffer */
1192 size_t *dataLength
) /* IO - Number of bytes */
1194 ssize_t bytes
; /* Number of bytes read */
1197 bytes
= recv((int)connection
, data
, *dataLength
, 0);
1200 *dataLength
= bytes
;
1206 #endif /* HAVE_SSL && HAVE_CDSASSL */
1210 * 'httpReconnect()' - Reconnect to a HTTP server...
1213 int /* O - 0 on success, non-zero on failure */
1214 httpReconnect(http_t
*http
) /* I - HTTP data */
1216 http_addrlist_t
*addr
; /* Connected address */
1219 DEBUG_printf(("httpReconnect(http=%p)\n", http
));
1226 http_shutdown_ssl(http
);
1227 #endif /* HAVE_SSL */
1230 * Close any previously open socket...
1235 closesocket(http
->fd
);
1241 * Connect to the server...
1244 if ((addr
= httpAddrConnect(http
->addrlist
, &(http
->fd
))) == NULL
)
1247 * Unable to connect...
1251 http
->error
= WSAGetLastError();
1253 http
->error
= errno
;
1255 http
->status
= HTTP_ERROR
;
1260 http
->hostaddr
= &(addr
->addr
);
1262 http
->status
= HTTP_CONTINUE
;
1265 if (http
->encryption
== HTTP_ENCRYPT_ALWAYS
)
1268 * Always do encryption via SSL.
1271 if (http_setup_ssl(http
) != 0)
1274 closesocket(http
->fd
);
1282 else if (http
->encryption
== HTTP_ENCRYPT_REQUIRED
)
1283 return (http_upgrade(http
));
1284 #endif /* HAVE_SSL */
1291 * 'httpSetCookie()' - Set the cookie value(s)...
1293 * @since CUPS 1.1.19@
1297 httpSetCookie(http_t
*http
, /* I - Connection */
1298 const char *cookie
) /* I - Cookie string */
1307 http
->cookie
= strdup(cookie
);
1309 http
->cookie
= NULL
;
1314 * 'httpSetField()' - Set the value of an HTTP header.
1318 httpSetField(http_t
*http
, /* I - HTTP data */
1319 http_field_t field
, /* I - Field index */
1320 const char *value
) /* I - Value */
1323 field
< HTTP_FIELD_ACCEPT_LANGUAGE
||
1324 field
> HTTP_FIELD_WWW_AUTHENTICATE
||
1328 strlcpy(http
->fields
[field
], value
, HTTP_MAX_VALUE
);
1333 * 'httpSetLength()' - Set the content-length and content-encoding.
1339 httpSetLength(http_t
*http
, /* I - HTTP data */
1340 off_t length
) /* I - Length (0 for chunked) */
1342 if (!http
|| length
< 0)
1347 strcpy(http
->fields
[HTTP_FIELD_TRANSFER_ENCODING
], "chunked");
1348 http
->fields
[HTTP_FIELD_CONTENT_LENGTH
][0] = '\0';
1352 http
->fields
[HTTP_FIELD_TRANSFER_ENCODING
][0] = '\0';
1353 snprintf(http
->fields
[HTTP_FIELD_CONTENT_LENGTH
], HTTP_MAX_VALUE
,
1354 CUPS_LLFMT
, CUPS_LLCAST length
);
1360 * 'httpTrace()' - Send an TRACE request to the server.
1363 int /* O - Status of call (0 = success) */
1364 httpTrace(http_t
*http
, /* I - HTTP data */
1365 const char *uri
) /* I - URI for trace */
1367 return (http_send(http
, HTTP_TRACE
, uri
));
1372 * 'httpUpdate()' - Update the current HTTP state for incoming data.
1375 http_status_t
/* O - HTTP status */
1376 httpUpdate(http_t
*http
) /* I - HTTP data */
1378 char line
[32768], /* Line from connection... */
1379 *value
; /* Pointer to value on line */
1380 http_field_t field
; /* Field index */
1381 int major
, minor
, /* HTTP version numbers */
1382 status
; /* Request status */
1385 DEBUG_printf(("httpUpdate(http=%p), state=%d\n", http
, http
->state
));
1388 * Flush pending data, if any...
1393 DEBUG_puts(" flushing buffer...");
1395 if (httpFlushWrite(http
) < 0)
1396 return (HTTP_ERROR
);
1400 * If we haven't issued any commands, then there is nothing to "update"...
1403 if (http
->state
== HTTP_WAITING
)
1404 return (HTTP_CONTINUE
);
1407 * Grab all of the lines we can from the connection...
1410 while (httpGets(line
, sizeof(line
), http
) != NULL
)
1412 DEBUG_printf(("httpUpdate: Got \"%s\"\n", line
));
1414 if (line
[0] == '\0')
1417 * Blank line means the start of the data section (if any). Return
1418 * the result code, too...
1420 * If we get status 100 (HTTP_CONTINUE), then we *don't* change states.
1421 * Instead, we just return HTTP_CONTINUE to the caller and keep on
1425 if (http
->status
== HTTP_CONTINUE
)
1426 return (http
->status
);
1428 if (http
->status
< HTTP_BAD_REQUEST
)
1429 http
->digest_tries
= 0;
1432 if (http
->status
== HTTP_SWITCHING_PROTOCOLS
&& !http
->tls
)
1434 if (http_setup_ssl(http
) != 0)
1437 closesocket(http
->fd
);
1442 return (HTTP_ERROR
);
1445 return (HTTP_CONTINUE
);
1447 #endif /* HAVE_SSL */
1449 httpGetLength2(http
);
1451 switch (http
->state
)
1455 case HTTP_POST_RECV
:
1458 case HTTP_POST_SEND
:
1462 http
->state
= HTTP_WAITING
;
1466 return (http
->status
);
1468 else if (strncmp(line
, "HTTP/", 5) == 0)
1471 * Got the beginning of a response...
1474 if (sscanf(line
, "HTTP/%d.%d%d", &major
, &minor
, &status
) != 3)
1475 return (HTTP_ERROR
);
1477 http
->version
= (http_version_t
)(major
* 100 + minor
);
1478 http
->status
= (http_status_t
)status
;
1480 else if ((value
= strchr(line
, ':')) != NULL
)
1487 while (isspace(*value
& 255))
1491 * Be tolerants of servers that send unknown attribute fields...
1494 if (!strcasecmp(line
, "expect"))
1497 * "Expect: 100-continue" or similar...
1500 http
->expect
= (http_status_t
)atoi(value
);
1502 else if (!strcasecmp(line
, "cookie"))
1505 * "Cookie: name=value[; name=value ...]" - replaces previous cookies...
1508 httpSetCookie(http
, value
);
1510 else if ((field
= http_field(line
)) == HTTP_FIELD_UNKNOWN
)
1512 DEBUG_printf(("httpUpdate: unknown field %s seen!\n", line
));
1516 httpSetField(http
, field
, value
);
1520 http
->status
= HTTP_ERROR
;
1521 return (HTTP_ERROR
);
1526 * See if there was an error...
1529 if (http
->error
== EPIPE
&& http
->status
> HTTP_CONTINUE
)
1530 return (http
->status
);
1534 DEBUG_printf(("httpUpdate: socket error %d - %s\n", http
->error
,
1535 strerror(http
->error
)));
1536 http
->status
= HTTP_ERROR
;
1537 return (HTTP_ERROR
);
1541 * If we haven't already returned, then there is nothing new...
1544 return (HTTP_CONTINUE
);
1549 * 'httpWait()' - Wait for data available on a connection.
1551 * @since CUPS 1.1.19@
1554 int /* O - 1 if data is available, 0 otherwise */
1555 httpWait(http_t
*http
, /* I - HTTP data */
1556 int msec
) /* I - Milliseconds to wait */
1559 * First see if there is data in the buffer...
1569 * If not, check the SSL/TLS buffers and do a select() on the connection...
1572 return (http_wait(http
, msec
));
1577 * 'httpWrite()' - Write data to a HTTP connection.
1580 int /* O - Number of bytes written */
1581 httpWrite(http_t
*http
, /* I - HTTP data */
1582 const char *buffer
, /* I - Buffer for data */
1583 int length
) /* I - Number of bytes to write */
1585 int bytes
; /* Bytes written */
1588 DEBUG_printf(("httpWrite(http=%p, buffer=%p, length=%d)\n", http
,
1592 * Range check input...
1595 if (http
== NULL
|| buffer
== NULL
)
1599 * Mark activity on the connection...
1602 http
->activity
= time(NULL
);
1605 * Buffer small writes for better performance...
1610 if (http
->wused
&& (length
+ http
->wused
) > sizeof(http
->wbuffer
))
1612 DEBUG_printf((" flushing buffer (wused=%d, length=%d)\n",
1613 http
->wused
, length
));
1615 httpFlushWrite(http
);
1618 if ((length
+ http
->wused
) <= sizeof(http
->wbuffer
))
1621 * Write to buffer...
1624 DEBUG_printf((" copying %d bytes to wbuffer...\n", length
));
1626 memcpy(http
->wbuffer
+ http
->wused
, buffer
, length
);
1627 http
->wused
+= length
;
1633 * Otherwise write the data directly...
1636 DEBUG_printf((" writing %d bytes to socket...\n", length
));
1638 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
1639 bytes
= http_write_chunk(http
, buffer
, length
);
1641 bytes
= http_write(http
, buffer
, length
);
1643 DEBUG_printf((" wrote %d bytes...\n", bytes
));
1646 if (http
->data_encoding
== HTTP_ENCODE_LENGTH
)
1647 http
->data_remaining
-= bytes
;
1653 * Handle end-of-request processing...
1656 if ((http
->data_encoding
== HTTP_ENCODE_CHUNKED
&& length
== 0) ||
1657 (http
->data_encoding
== HTTP_ENCODE_LENGTH
&& http
->data_remaining
== 0))
1660 * Finished with the transfer; unless we are sending POST or PUT
1664 DEBUG_puts("httpWrite: changing states...");
1667 httpFlushWrite(http
);
1669 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
1672 * Send a 0-length chunk at the end of the request...
1675 http_write(http
, "0\r\n\r\n", 5);
1678 * Reset the data state...
1681 http
->data_encoding
= HTTP_ENCODE_LENGTH
;
1682 http
->data_remaining
= 0;
1685 if (http
->state
== HTTP_POST_RECV
)
1687 else if (http
->state
== HTTP_PUT_RECV
)
1688 http
->state
= HTTP_STATUS
;
1690 http
->state
= HTTP_WAITING
;
1697 #if defined(HAVE_SSL) && defined(HAVE_CDSASSL)
1699 * '_httpWriteCDSA()' - Write function for CDSA encryption code.
1702 OSStatus
/* O - -1 on error, 0 on success */
1704 SSLConnectionRef connection
, /* I - SSL/TLS connection */
1705 const void *data
, /* I - Data buffer */
1706 size_t *dataLength
) /* IO - Number of bytes */
1708 ssize_t bytes
; /* Number of write written */
1711 bytes
= write((int)connection
, data
, *dataLength
);
1714 *dataLength
= bytes
;
1720 #endif /* HAVE_SSL && HAVE_CDSASSL */
1724 * 'http_field()' - Return the field index for a field name.
1727 static http_field_t
/* O - Field index */
1728 http_field(const char *name
) /* I - String name */
1730 int i
; /* Looping var */
1733 for (i
= 0; i
< HTTP_FIELD_MAX
; i
++)
1734 if (strcasecmp(name
, http_fields
[i
]) == 0)
1735 return ((http_field_t
)i
);
1737 return (HTTP_FIELD_UNKNOWN
);
1743 * 'http_read_ssl()' - Read from a SSL/TLS connection.
1746 static int /* O - Bytes read */
1747 http_read_ssl(http_t
*http
, /* I - HTTP data */
1748 char *buf
, /* I - Buffer to store data */
1749 int len
) /* I - Length of buffer */
1751 # if defined(HAVE_LIBSSL)
1752 return (SSL_read((SSL
*)(http
->tls
), buf
, len
));
1754 # elif defined(HAVE_GNUTLS)
1755 return (gnutls_record_recv(((http_tls_t
*)(http
->tls
))->session
, buf
, len
));
1757 # elif defined(HAVE_CDSASSL)
1758 OSStatus error
; /* Error info */
1759 size_t processed
; /* Number of bytes processed */
1762 error
= SSLRead((SSLContextRef
)http
->tls
, buf
, len
, &processed
);
1768 http
->error
= error
;
1772 # endif /* HAVE_LIBSSL */
1774 #endif /* HAVE_SSL */
1778 * 'http_send()' - Send a request with all fields and the trailing blank line.
1781 static int /* O - 0 on success, non-zero on error */
1782 http_send(http_t
*http
, /* I - HTTP data */
1783 http_state_t request
, /* I - Request code */
1784 const char *uri
) /* I - URI */
1786 int i
; /* Looping var */
1787 char *ptr
, /* Pointer in buffer */
1788 buf
[1024]; /* Encoded URI buffer */
1789 static const char * const codes
[] =
1790 { /* Request code strings */
1805 static const char hex
[] = "0123456789ABCDEF";
1809 DEBUG_printf(("http_send(http=%p, request=HTTP_%s, uri=\"%s\")\n",
1810 http
, codes
[request
], uri
));
1812 if (http
== NULL
|| uri
== NULL
)
1816 * Encode the URI as needed...
1819 for (ptr
= buf
; *uri
!= '\0' && ptr
< (buf
+ sizeof(buf
) - 1); uri
++)
1820 if (*uri
<= ' ' || *uri
>= 127)
1822 if (ptr
< (buf
+ sizeof(buf
) - 1))
1824 if (ptr
< (buf
+ sizeof(buf
) - 1))
1825 *ptr
++ = hex
[(*uri
>> 4) & 15];
1826 if (ptr
< (buf
+ sizeof(buf
) - 1))
1827 *ptr
++ = hex
[*uri
& 15];
1835 * See if we had an error the last time around; if so, reconnect...
1838 if (http
->status
== HTTP_ERROR
|| http
->status
>= HTTP_BAD_REQUEST
)
1839 httpReconnect(http
);
1842 * Send the request header...
1845 http
->state
= request
;
1846 if (request
== HTTP_POST
|| request
== HTTP_PUT
)
1849 http
->status
= HTTP_CONTINUE
;
1852 if (http
->encryption
== HTTP_ENCRYPT_REQUIRED
&& !http
->tls
)
1854 httpSetField(http
, HTTP_FIELD_CONNECTION
, "Upgrade");
1855 httpSetField(http
, HTTP_FIELD_UPGRADE
, "TLS/1.0,SSL/2.0,SSL/3.0");
1857 #endif /* HAVE_SSL */
1859 if (httpPrintf(http
, "%s %s HTTP/1.1\r\n", codes
[request
], buf
) < 1)
1861 http
->status
= HTTP_ERROR
;
1865 for (i
= 0; i
< HTTP_FIELD_MAX
; i
++)
1866 if (http
->fields
[i
][0] != '\0')
1868 DEBUG_printf(("%s: %s\n", http_fields
[i
], http
->fields
[i
]));
1870 if (httpPrintf(http
, "%s: %s\r\n", http_fields
[i
], http
->fields
[i
]) < 1)
1872 http
->status
= HTTP_ERROR
;
1877 if (httpPrintf(http
, "\r\n") < 1)
1879 http
->status
= HTTP_ERROR
;
1883 httpGetLength2(http
);
1884 httpClearFields(http
);
1892 * 'http_setup_ssl()' - Set up SSL/TLS support on a connection.
1895 static int /* O - Status of connection */
1896 http_setup_ssl(http_t
*http
) /* I - HTTP data */
1899 SSL_CTX
*context
; /* Context for encryption */
1900 SSL
*conn
; /* Connection for encryption */
1901 # elif defined(HAVE_GNUTLS)
1902 http_tls_t
*conn
; /* TLS session object */
1903 gnutls_certificate_client_credentials
*credentials
;
1904 /* TLS credentials */
1905 # elif defined(HAVE_CDSASSL)
1906 SSLContextRef conn
; /* Context for encryption */
1907 OSStatus error
; /* Error info */
1908 # endif /* HAVE_LIBSSL */
1911 DEBUG_printf(("http_setup_ssl(http=%p)\n", http
));
1914 context
= SSL_CTX_new(SSLv23_client_method());
1916 SSL_CTX_set_options(context
, SSL_OP_NO_SSLv2
); /* Only use SSLv3 or TLS */
1918 conn
= SSL_new(context
);
1920 SSL_set_fd(conn
, http
->fd
);
1921 if (SSL_connect(conn
) != 1)
1924 unsigned long error
; /* Error code */
1926 while ((error
= ERR_get_error()) != 0)
1927 printf("http_setup_ssl: %s\n", ERR_error_string(error
, NULL
));
1930 SSL_CTX_free(context
);
1934 http
->error
= WSAGetLastError();
1936 http
->error
= errno
;
1938 http
->status
= HTTP_ERROR
;
1940 return (HTTP_ERROR
);
1943 # elif defined(HAVE_GNUTLS)
1944 conn
= (http_tls_t
*)malloc(sizeof(http_tls_t
));
1948 http
->error
= errno
;
1949 http
->status
= HTTP_ERROR
;
1954 credentials
= (gnutls_certificate_client_credentials
*)
1955 malloc(sizeof(gnutls_certificate_client_credentials
));
1956 if (credentials
== NULL
)
1960 http
->error
= errno
;
1961 http
->status
= HTTP_ERROR
;
1966 gnutls_certificate_allocate_credentials(credentials
);
1968 gnutls_init(&(conn
->session
), GNUTLS_CLIENT
);
1969 gnutls_set_default_priority(conn
->session
);
1970 gnutls_credentials_set(conn
->session
, GNUTLS_CRD_CERTIFICATE
, *credentials
);
1971 gnutls_transport_set_ptr(conn
->session
, http
->fd
);
1973 if ((gnutls_handshake(conn
->session
)) != GNUTLS_E_SUCCESS
)
1975 http
->error
= errno
;
1976 http
->status
= HTTP_ERROR
;
1981 conn
->credentials
= credentials
;
1983 # elif defined(HAVE_CDSASSL)
1984 error
= SSLNewContext(false, &conn
);
1987 error
= SSLSetIOFuncs(conn
, _httpReadCDSA
, _httpWriteCDSA
);
1990 error
= SSLSetConnection(conn
, (SSLConnectionRef
)http
->fd
);
1993 error
= SSLSetAllowsExpiredCerts(conn
, true);
1996 error
= SSLSetAllowsAnyRoot(conn
, true);
1999 error
= SSLHandshake(conn
);
2003 http
->error
= error
;
2004 http
->status
= HTTP_ERROR
;
2006 SSLDisposeContext(conn
);
2012 # endif /* HAVE_CDSASSL */
2017 #endif /* HAVE_SSL */
2022 * 'http_shutdown_ssl()' - Shut down SSL/TLS on a connection.
2026 http_shutdown_ssl(http_t
*http
) /* I - HTTP data */
2029 SSL_CTX
*context
; /* Context for encryption */
2030 SSL
*conn
; /* Connection for encryption */
2033 conn
= (SSL
*)(http
->tls
);
2034 context
= SSL_get_SSL_CTX(conn
);
2037 SSL_CTX_free(context
);
2040 # elif defined(HAVE_GNUTLS)
2041 http_tls_t
*conn
; /* Encryption session */
2042 gnutls_certificate_client_credentials
*credentials
;
2043 /* TLS credentials */
2046 conn
= (http_tls_t
*)(http
->tls
);
2047 credentials
= (gnutls_certificate_client_credentials
*)(conn
->credentials
);
2049 gnutls_bye(conn
->session
, GNUTLS_SHUT_RDWR
);
2050 gnutls_deinit(conn
->session
);
2051 gnutls_certificate_free_credentials(*credentials
);
2055 # elif defined(HAVE_CDSASSL)
2056 SSLClose((SSLContextRef
)http
->tls
);
2057 SSLDisposeContext((SSLContextRef
)http
->tls
);
2058 # endif /* HAVE_LIBSSL */
2062 #endif /* HAVE_SSL */
2067 * 'http_upgrade()' - Force upgrade to TLS encryption.
2070 static int /* O - Status of connection */
2071 http_upgrade(http_t
*http
) /* I - HTTP data */
2073 int ret
; /* Return value */
2074 http_t myhttp
; /* Local copy of HTTP data */
2077 DEBUG_printf(("http_upgrade(%p)\n", http
));
2080 * Copy the HTTP data to a local variable so we can do the OPTIONS
2081 * request without interfering with the existing request data...
2084 memcpy(&myhttp
, http
, sizeof(myhttp
));
2087 * Send an OPTIONS request to the server, requiring SSL or TLS
2088 * encryption on the link...
2091 httpClearFields(&myhttp
);
2092 httpSetField(&myhttp
, HTTP_FIELD_CONNECTION
, "upgrade");
2093 httpSetField(&myhttp
, HTTP_FIELD_UPGRADE
, "TLS/1.0, SSL/2.0, SSL/3.0");
2095 if ((ret
= httpOptions(&myhttp
, "*")) == 0)
2098 * Wait for the secure connection...
2101 while (httpUpdate(&myhttp
) == HTTP_CONTINUE
);
2107 * Copy the HTTP data back over, if any...
2110 http
->fd
= myhttp
.fd
;
2111 http
->error
= myhttp
.error
;
2112 http
->activity
= myhttp
.activity
;
2113 http
->status
= myhttp
.status
;
2114 http
->version
= myhttp
.version
;
2115 http
->keep_alive
= myhttp
.keep_alive
;
2116 http
->used
= myhttp
.used
;
2119 memcpy(http
->buffer
, myhttp
.buffer
, http
->used
);
2121 http
->auth_type
= myhttp
.auth_type
;
2122 http
->nonce_count
= myhttp
.nonce_count
;
2124 memcpy(http
->nonce
, myhttp
.nonce
, sizeof(http
->nonce
));
2126 http
->tls
= myhttp
.tls
;
2127 http
->encryption
= myhttp
.encryption
;
2130 * See if we actually went secure...
2136 * Server does not support HTTP upgrade...
2139 DEBUG_puts("Server does not support HTTP upgrade!");
2142 closesocket(http
->fd
);
2154 #endif /* HAVE_SSL */
2158 * 'http_wait()' - Wait for data available on a connection.
2161 static int /* O - 1 if data is available, 0 otherwise */
2162 http_wait(http_t
*http
, /* I - HTTP data */
2163 int msec
) /* I - Milliseconds to wait */
2166 struct rlimit limit
; /* Runtime limit */
2168 struct timeval timeout
; /* Timeout */
2169 int nfds
; /* Result from select() */
2170 int set_size
; /* Size of select set */
2173 DEBUG_printf(("http_wait(http=%p, msec=%d)\n", http
, msec
));
2176 * Check the SSL/TLS buffers for data first...
2183 if (SSL_pending((SSL
*)(http
->tls
)))
2185 # elif defined(HAVE_GNUTLS)
2186 if (gnutls_record_check_pending(((http_tls_t
*)(http
->tls
))->session
))
2188 # elif defined(HAVE_CDSASSL)
2189 size_t bytes
; /* Bytes that are available */
2191 if (!SSLGetBufferedReadSize((SSLContextRef
)http
->tls
, &bytes
) && bytes
> 0)
2193 # endif /* HAVE_LIBSSL */
2195 #endif /* HAVE_SSL */
2198 * Then try doing a select() to poll the socket...
2201 if (!http
->input_set
)
2205 * Windows has a fixed-size select() structure, different (surprise,
2206 * surprise!) from all UNIX implementations. Just allocate this
2207 * fixed structure...
2210 http
->input_set
= calloc(1, sizeof(fd_set
));
2213 * Allocate the select() input set based upon the max number of file
2214 * descriptors available for this process...
2217 getrlimit(RLIMIT_NOFILE
, &limit
);
2219 set_size
= (limit
.rlim_cur
+ 31) / 8 + 4;
2220 if (set_size
< sizeof(fd_set
))
2221 set_size
= sizeof(fd_set
);
2223 http
->input_set
= calloc(1, set_size
);
2226 if (!http
->input_set
)
2232 FD_SET(http
->fd
, http
->input_set
);
2236 timeout
.tv_sec
= msec
/ 1000;
2237 timeout
.tv_usec
= (msec
% 1000) * 1000;
2239 nfds
= select(http
->fd
+ 1, http
->input_set
, NULL
, NULL
, &timeout
);
2242 nfds
= select(http
->fd
+ 1, http
->input_set
, NULL
, NULL
, NULL
);
2245 while (nfds
< 0 && WSAGetLastError() == WSAEINTR
);
2247 while (nfds
< 0 && errno
== EINTR
);
2250 FD_CLR(http
->fd
, http
->input_set
);
2257 * 'http_write()' - Write a buffer to a HTTP connection.
2260 static int /* O - Number of bytes written */
2261 http_write(http_t
*http
, /* I - HTTP data */
2262 const char *buffer
, /* I - Buffer for data */
2263 int length
) /* I - Number of bytes to write */
2265 int tbytes
, /* Total bytes sent */
2266 bytes
; /* Bytes sent */
2275 bytes
= http_write_ssl(http
, buffer
, length
);
2277 #endif /* HAVE_SSL */
2278 bytes
= send(http
->fd
, buffer
, length
, 0);
2283 if (WSAGetLastError() != http
->error
)
2285 http
->error
= WSAGetLastError();
2291 else if (errno
!= http
->error
&& errno
!= ECONNRESET
)
2293 http
->error
= errno
;
2298 DEBUG_puts("http_write: error writing data...\n");
2311 printf("http_write: wrote %d bytes: \n", tbytes
);
2312 for (i
= 0, buffer
-= tbytes
; i
< tbytes
; i
+= 16)
2316 for (j
= 0; j
< 16 && (i
+ j
) < tbytes
; j
++)
2317 printf(" %02X", buffer
[i
+ j
] & 255);
2326 for (j
= 0; j
< 16 && (i
+ j
) < tbytes
; j
++)
2328 ch
= buffer
[i
+ j
] & 255;
2330 if (ch
< ' ' || ch
== 127)
2345 * 'http_write_chunk()' - Write a chunked buffer.
2348 static int /* O - Number bytes written */
2349 http_write_chunk(http_t
*http
, /* I - HTTP data */
2350 const char *buffer
, /* I - Buffer to write */
2351 int length
) /* I - Length of buffer */
2353 char header
[255]; /* Chunk header */
2354 int bytes
; /* Bytes written */
2356 DEBUG_printf(("http_write_chunk(http=%p, buffer=%p, length=%d)\n",
2357 http
, buffer
, length
));
2360 * Write the chunk header, data, and trailer.
2363 sprintf(header
, "%x\r\n", length
);
2364 if (http_write(http
, header
, strlen(header
)) < 0)
2366 DEBUG_puts(" http_write of length failed!");
2370 if ((bytes
= http_write(http
, buffer
, length
)) < 0)
2372 DEBUG_puts(" http_write of buffer failed!");
2376 if (http_write(http
, "\r\n", 2) < 0)
2378 DEBUG_puts(" http_write of CR LF failed!");
2388 * 'http_write_ssl()' - Write to a SSL/TLS connection.
2391 static int /* O - Bytes written */
2392 http_write_ssl(http_t
*http
, /* I - HTTP data */
2393 const char *buf
, /* I - Buffer holding data */
2394 int len
) /* I - Length of buffer */
2396 # if defined(HAVE_LIBSSL)
2397 return (SSL_write((SSL
*)(http
->tls
), buf
, len
));
2399 # elif defined(HAVE_GNUTLS)
2400 return (gnutls_record_send(((http_tls_t
*)(http
->tls
))->session
, buf
, len
));
2401 # elif defined(HAVE_CDSASSL)
2402 OSStatus error
; /* Error info */
2403 size_t processed
; /* Number of bytes processed */
2406 error
= SSLWrite((SSLContextRef
)http
->tls
, buf
, len
, &processed
);
2412 http
->error
= error
;
2415 # endif /* HAVE_LIBSSL */
2417 #endif /* HAVE_SSL */