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ef416fc2 | 1 | /* |
b19ccc9e | 2 | * "$Id: http.c 7850 2008-08-20 00:07:25Z mike $" |
ef416fc2 | 3 | * |
4 | * HTTP routines for the Common UNIX Printing System (CUPS). | |
5 | * | |
38e73f87 | 6 | * Copyright 2007-2009 by Apple Inc. |
b86bc4cf | 7 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
ef416fc2 | 8 | * |
f7deaa1a | 9 | * This file contains Kerberos support code, copyright 2006 by |
10 | * Jelmer Vernooij. | |
11 | * | |
ef416fc2 | 12 | * These coded instructions, statements, and computer programs are the |
bc44d920 | 13 | * property of Apple Inc. and are protected by Federal copyright |
14 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
15 | * which should have been included with this file. If this file is | |
16 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
ef416fc2 | 17 | * |
18 | * This file is subject to the Apple OS-Developed Software exception. | |
19 | * | |
20 | * Contents: | |
21 | * | |
411affcf | 22 | * _httpBIOMethods() - Get the OpenSSL BIO methods for HTTP connections. |
ecdc0628 | 23 | * httpBlocking() - Set blocking/non-blocking behavior on a connection. |
38e73f87 MS |
24 | * httpCheck() - Check to see if there is a pending response from the |
25 | * server. | |
ef416fc2 | 26 | * httpClearCookie() - Clear the cookie value(s). |
ecdc0628 | 27 | * httpClearFields() - Clear HTTP request fields. |
ef416fc2 | 28 | * httpClose() - Close an HTTP connection... |
ef416fc2 | 29 | * httpConnectEncrypt() - Connect to a HTTP server using encryption. |
38e73f87 | 30 | * _httpCreate() - Create an unconnected HTTP connection. |
ef416fc2 | 31 | * httpDelete() - Send a DELETE request to the server. |
32 | * httpEncryption() - Set the required encryption on the link. | |
ecdc0628 | 33 | * httpError() - Get the last error on a connection. |
ef416fc2 | 34 | * httpFlush() - Flush data from a HTTP connection. |
35 | * httpFlushWrite() - Flush data in write buffer. | |
36 | * httpGet() - Send a GET request to the server. | |
355e94dc | 37 | * httpGetAuthString() - Get the current authorization string. |
ecdc0628 | 38 | * httpGetBlocking() - Get the blocking/non-block state of a connection. |
39 | * httpGetCookie() - Get any cookie data from the response. | |
40 | * httpGetFd() - Get the file descriptor associated with a | |
41 | * connection. | |
42 | * httpGetField() - Get a field value from a request/response. | |
ef416fc2 | 43 | * httpGetLength() - Get the amount of data remaining from the |
44 | * content-length or transfer-encoding fields. | |
45 | * httpGetLength2() - Get the amount of data remaining from the | |
46 | * content-length or transfer-encoding fields. | |
ecdc0628 | 47 | * httpGetStatus() - Get the status of the last HTTP request. |
ef416fc2 | 48 | * httpGetSubField() - Get a sub-field value. |
38e73f87 | 49 | * httpGetSubField2() - Get a sub-field value. |
ef416fc2 | 50 | * httpGets() - Get a line of text from a HTTP connection. |
51 | * httpHead() - Send a HEAD request to the server. | |
52 | * httpInitialize() - Initialize the HTTP interface library and set the | |
53 | * default HTTP proxy (if any). | |
54 | * httpOptions() - Send an OPTIONS request to the server. | |
55 | * httpPost() - Send a POST request to the server. | |
56 | * httpPrintf() - Print a formatted string to a HTTP connection. | |
57 | * httpPut() - Send a PUT request to the server. | |
58 | * httpRead() - Read data from a HTTP connection. | |
a4d04587 | 59 | * httpRead2() - Read data from a HTTP connection. |
411affcf | 60 | * _httpReadCDSA() - Read function for the CDSA library. |
61 | * _httpReadGNUTLS() - Read function for the GNU TLS library. | |
38e73f87 | 62 | * httpReconnect() - Reconnect to a HTTP server. |
355e94dc | 63 | * httpSetAuthString() - Set the current authorization string. |
ef416fc2 | 64 | * httpSetCookie() - Set the cookie value(s)... |
b423cd4c | 65 | * httpSetExpect() - Set the Expect: header in a request. |
ef416fc2 | 66 | * httpSetField() - Set the value of an HTTP header. |
38e73f87 | 67 | * httpSetLength() - Set the content-length and content-encoding. |
ef416fc2 | 68 | * httpTrace() - Send an TRACE request to the server. |
69 | * httpUpdate() - Update the current HTTP state for incoming data. | |
38e73f87 | 70 | * _httpWait() - Wait for data available on a connection (no flush). |
ef416fc2 | 71 | * httpWait() - Wait for data available on a connection. |
72 | * httpWrite() - Write data to a HTTP connection. | |
a4d04587 | 73 | * httpWrite2() - Write data to a HTTP connection. |
411affcf | 74 | * _httpWriteCDSA() - Write function for the CDSA library. |
75 | * _httpWriteGNUTLS() - Write function for the GNU TLS library. | |
76 | * http_bio_ctrl() - Control the HTTP connection. | |
77 | * http_bio_free() - Free OpenSSL data. | |
78 | * http_bio_new() - Initialize an OpenSSL BIO structure. | |
79 | * http_bio_puts() - Send a string for OpenSSL. | |
80 | * http_bio_read() - Read data for OpenSSL. | |
81 | * http_bio_write() - Write data for OpenSSL. | |
ae71f5de | 82 | * http_debug_hex() - Do a hex dump of a buffer. |
ef416fc2 | 83 | * http_field() - Return the field index for a field name. |
84 | * http_read_ssl() - Read from a SSL/TLS connection. | |
85 | * http_send() - Send a request with all fields and the trailing | |
86 | * blank line. | |
38e73f87 | 87 | * http_setup_ssl() - Set up SSL/TLS support on a connection. |
ef416fc2 | 88 | * http_shutdown_ssl() - Shut down SSL/TLS on a connection. |
89 | * http_upgrade() - Force upgrade to TLS encryption. | |
38e73f87 MS |
90 | * http_write() - Write a buffer to a HTTP connection. |
91 | * http_write_chunk() - Write a chunked buffer. | |
ef416fc2 | 92 | * http_write_ssl() - Write to a SSL/TLS connection. |
93 | */ | |
94 | ||
95 | /* | |
96 | * Include necessary headers... | |
97 | */ | |
98 | ||
99 | #include "http-private.h" | |
100 | #include "globals.h" | |
101 | #include "debug.h" | |
102 | #include <stdlib.h> | |
103 | #include <fcntl.h> | |
104 | #include <errno.h> | |
105 | #ifndef WIN32 | |
106 | # include <signal.h> | |
107 | # include <sys/time.h> | |
108 | # include <sys/resource.h> | |
109 | #endif /* !WIN32 */ | |
f7deaa1a | 110 | #ifdef HAVE_POLL |
111 | # include <sys/poll.h> | |
112 | #endif /* HAVE_POLL */ | |
ef416fc2 | 113 | |
114 | ||
115 | /* | |
116 | * Some operating systems have done away with the Fxxxx constants for | |
117 | * the fcntl() call; this works around that "feature"... | |
118 | */ | |
119 | ||
120 | #ifndef FNONBLK | |
121 | # define FNONBLK O_NONBLOCK | |
122 | #endif /* !FNONBLK */ | |
123 | ||
124 | ||
125 | /* | |
126 | * Local functions... | |
127 | */ | |
128 | ||
ae71f5de MS |
129 | #ifdef DEBUG |
130 | static void http_debug_hex(const char *prefix, const char *buffer, | |
131 | int bytes); | |
132 | #endif /* DEBUG */ | |
ef416fc2 | 133 | static http_field_t http_field(const char *name); |
134 | static int http_send(http_t *http, http_state_t request, | |
135 | const char *uri); | |
ef416fc2 | 136 | static int http_write(http_t *http, const char *buffer, |
137 | int length); | |
138 | static int http_write_chunk(http_t *http, const char *buffer, | |
139 | int length); | |
140 | #ifdef HAVE_SSL | |
141 | static int http_read_ssl(http_t *http, char *buf, int len); | |
142 | static int http_setup_ssl(http_t *http); | |
143 | static void http_shutdown_ssl(http_t *http); | |
144 | static int http_upgrade(http_t *http); | |
145 | static int http_write_ssl(http_t *http, const char *buf, int len); | |
146 | #endif /* HAVE_SSL */ | |
147 | ||
148 | ||
149 | /* | |
150 | * Local globals... | |
151 | */ | |
152 | ||
153 | static const char * const http_fields[] = | |
154 | { | |
155 | "Accept-Language", | |
156 | "Accept-Ranges", | |
157 | "Authorization", | |
158 | "Connection", | |
159 | "Content-Encoding", | |
160 | "Content-Language", | |
161 | "Content-Length", | |
162 | "Content-Location", | |
163 | "Content-MD5", | |
164 | "Content-Range", | |
165 | "Content-Type", | |
166 | "Content-Version", | |
167 | "Date", | |
168 | "Host", | |
169 | "If-Modified-Since", | |
170 | "If-Unmodified-since", | |
171 | "Keep-Alive", | |
172 | "Last-Modified", | |
173 | "Link", | |
174 | "Location", | |
175 | "Range", | |
176 | "Referer", | |
177 | "Retry-After", | |
178 | "Transfer-Encoding", | |
179 | "Upgrade", | |
180 | "User-Agent", | |
181 | "WWW-Authenticate" | |
182 | }; | |
f11a948a MS |
183 | #ifdef DEBUG |
184 | static const char * const http_states[] = | |
185 | { | |
186 | "HTTP_WAITING", | |
187 | "HTTP_OPTIONS", | |
188 | "HTTP_GET", | |
189 | "HTTP_GET_SEND", | |
190 | "HTTP_HEAD", | |
191 | "HTTP_POST", | |
192 | "HTTP_POST_RECV", | |
193 | "HTTP_POST_SEND", | |
194 | "HTTP_PUT", | |
195 | "HTTP_PUT_RECV", | |
196 | "HTTP_DELETE", | |
197 | "HTTP_TRACE", | |
198 | "HTTP_CLOSE", | |
199 | "HTTP_STATUS" | |
200 | }; | |
201 | #endif /* DEBUG */ | |
ef416fc2 | 202 | |
203 | ||
411affcf | 204 | #if defined(HAVE_SSL) && defined(HAVE_LIBSSL) |
205 | /* | |
206 | * BIO methods for OpenSSL... | |
207 | */ | |
208 | ||
209 | static int http_bio_write(BIO *h, const char *buf, int num); | |
210 | static int http_bio_read(BIO *h, char *buf, int size); | |
211 | static int http_bio_puts(BIO *h, const char *str); | |
212 | static long http_bio_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
213 | static int http_bio_new(BIO *h); | |
214 | static int http_bio_free(BIO *data); | |
215 | ||
216 | static BIO_METHOD http_bio_methods = | |
217 | { | |
218 | BIO_TYPE_SOCKET, | |
219 | "http", | |
220 | http_bio_write, | |
221 | http_bio_read, | |
222 | http_bio_puts, | |
223 | NULL, /* http_bio_gets, */ | |
224 | http_bio_ctrl, | |
225 | http_bio_new, | |
226 | http_bio_free, | |
227 | NULL, | |
228 | }; | |
229 | ||
230 | ||
231 | /* | |
232 | * '_httpBIOMethods()' - Get the OpenSSL BIO methods for HTTP connections. | |
233 | */ | |
234 | ||
235 | BIO_METHOD * /* O - BIO methods for OpenSSL */ | |
236 | _httpBIOMethods(void) | |
237 | { | |
238 | return (&http_bio_methods); | |
239 | } | |
240 | #endif /* HAVE_SSL && HAVE_LIBSSL */ | |
241 | ||
242 | ||
ecdc0628 | 243 | /* |
244 | * 'httpBlocking()' - Set blocking/non-blocking behavior on a connection. | |
245 | */ | |
246 | ||
247 | void | |
568fa3fa | 248 | httpBlocking(http_t *http, /* I - Connection to server */ |
ecdc0628 | 249 | int b) /* I - 1 = blocking, 0 = non-blocking */ |
250 | { | |
251 | if (http) | |
252 | http->blocking = b; | |
253 | } | |
254 | ||
255 | ||
ef416fc2 | 256 | /* |
257 | * 'httpCheck()' - Check to see if there is a pending response from the server. | |
258 | */ | |
259 | ||
ecdc0628 | 260 | int /* O - 0 = no data, 1 = data available */ |
568fa3fa | 261 | httpCheck(http_t *http) /* I - Connection to server */ |
ef416fc2 | 262 | { |
263 | return (httpWait(http, 0)); | |
264 | } | |
265 | ||
266 | ||
267 | /* | |
268 | * 'httpClearCookie()' - Clear the cookie value(s). | |
269 | * | |
426c6a59 | 270 | * @since CUPS 1.1.19/Mac OS X 10.3@ |
ef416fc2 | 271 | */ |
272 | ||
273 | void | |
568fa3fa | 274 | httpClearCookie(http_t *http) /* I - Connection to server */ |
ef416fc2 | 275 | { |
276 | if (!http) | |
277 | return; | |
278 | ||
279 | if (http->cookie) | |
280 | { | |
281 | free(http->cookie); | |
282 | http->cookie = NULL; | |
283 | } | |
284 | } | |
285 | ||
286 | ||
ecdc0628 | 287 | /* |
288 | * 'httpClearFields()' - Clear HTTP request fields. | |
289 | */ | |
290 | ||
291 | void | |
568fa3fa | 292 | httpClearFields(http_t *http) /* I - Connection to server */ |
ecdc0628 | 293 | { |
294 | if (http) | |
295 | { | |
296 | memset(http->fields, 0, sizeof(http->fields)); | |
07725fee | 297 | if (http->hostname[0] == '/') |
298 | httpSetField(http, HTTP_FIELD_HOST, "localhost"); | |
299 | else | |
300 | httpSetField(http, HTTP_FIELD_HOST, http->hostname); | |
b423cd4c | 301 | |
f7deaa1a | 302 | if (http->field_authorization) |
303 | { | |
304 | free(http->field_authorization); | |
305 | http->field_authorization = NULL; | |
306 | } | |
307 | ||
b423cd4c | 308 | http->expect = (http_status_t)0; |
ecdc0628 | 309 | } |
310 | } | |
311 | ||
312 | ||
ef416fc2 | 313 | /* |
314 | * 'httpClose()' - Close an HTTP connection... | |
315 | */ | |
316 | ||
317 | void | |
568fa3fa | 318 | httpClose(http_t *http) /* I - Connection to server */ |
ef416fc2 | 319 | { |
f7deaa1a | 320 | #ifdef HAVE_GSSAPI |
1f0275e3 | 321 | OM_uint32 minor_status; /* Minor status code */ |
f7deaa1a | 322 | #endif /* HAVE_GSSAPI */ |
323 | ||
324 | ||
e07d4801 | 325 | DEBUG_printf(("httpClose(http=%p)", http)); |
ef416fc2 | 326 | |
327 | if (!http) | |
328 | return; | |
329 | ||
330 | httpAddrFreeList(http->addrlist); | |
331 | ||
ef416fc2 | 332 | if (http->cookie) |
333 | free(http->cookie); | |
334 | ||
335 | #ifdef HAVE_SSL | |
336 | if (http->tls) | |
337 | http_shutdown_ssl(http); | |
338 | #endif /* HAVE_SSL */ | |
339 | ||
340 | #ifdef WIN32 | |
341 | closesocket(http->fd); | |
342 | #else | |
343 | close(http->fd); | |
344 | #endif /* WIN32 */ | |
345 | ||
f7deaa1a | 346 | #ifdef HAVE_GSSAPI |
347 | if (http->gssctx != GSS_C_NO_CONTEXT) | |
1f0275e3 | 348 | gss_delete_sec_context(&minor_status, &http->gssctx, GSS_C_NO_BUFFER); |
f7deaa1a | 349 | |
350 | if (http->gssname != GSS_C_NO_NAME) | |
1f0275e3 | 351 | gss_release_name(&minor_status, &http->gssname); |
f7deaa1a | 352 | #endif /* HAVE_GSSAPI */ |
353 | ||
b94498cf | 354 | #ifdef HAVE_AUTHORIZATION_H |
355 | if (http->auth_ref) | |
356 | AuthorizationFree(http->auth_ref, kAuthorizationFlagDefaults); | |
357 | #endif /* HAVE_AUTHORIZATION_H */ | |
358 | ||
f7deaa1a | 359 | httpClearFields(http); |
360 | ||
361 | if (http->authstring && http->authstring != http->_authstring) | |
362 | free(http->authstring); | |
363 | ||
ef416fc2 | 364 | free(http); |
365 | } | |
366 | ||
367 | ||
368 | /* | |
369 | * 'httpConnect()' - Connect to a HTTP server. | |
1ff0402e MS |
370 | * |
371 | * This function is deprecated - use @link httpConnectEncrypt@ instead. | |
372 | * | |
373 | * @deprecated@ | |
ef416fc2 | 374 | */ |
375 | ||
376 | http_t * /* O - New HTTP connection */ | |
377 | httpConnect(const char *host, /* I - Host to connect to */ | |
378 | int port) /* I - Port number */ | |
379 | { | |
1ff0402e MS |
380 | return (httpConnectEncrypt(host, port, HTTP_ENCRYPT_IF_REQUESTED)); |
381 | } | |
382 | ||
383 | ||
384 | /* | |
385 | * 'httpConnectEncrypt()' - Connect to a HTTP server using encryption. | |
386 | */ | |
387 | ||
388 | http_t * /* O - New HTTP connection */ | |
389 | httpConnectEncrypt( | |
390 | const char *host, /* I - Host to connect to */ | |
391 | int port, /* I - Port number */ | |
392 | http_encryption_t encryption) /* I - Type of encryption to use */ | |
393 | { | |
394 | http_t *http; /* New HTTP connection */ | |
ef416fc2 | 395 | |
396 | ||
e07d4801 | 397 | DEBUG_printf(("httpConnectEncrypt(host=\"%s\", port=%d, encryption=%d)", |
1ff0402e MS |
398 | host, port, encryption)); |
399 | ||
ef416fc2 | 400 | /* |
1ff0402e | 401 | * Create the HTTP structure... |
ef416fc2 | 402 | */ |
403 | ||
1ff0402e MS |
404 | if ((http = _httpCreate(host, port, encryption)) == NULL) |
405 | return (NULL); | |
ef416fc2 | 406 | |
1ff0402e MS |
407 | /* |
408 | * Connect to the remote system... | |
409 | */ | |
410 | ||
411 | if (!httpReconnect(http)) | |
412 | return (http); | |
413 | ||
414 | /* | |
415 | * Could not connect to any known address - bail out! | |
416 | */ | |
417 | ||
418 | httpAddrFreeList(http->addrlist); | |
419 | ||
420 | free(http); | |
421 | ||
422 | return (NULL); | |
ef416fc2 | 423 | } |
424 | ||
425 | ||
426 | /* | |
1ff0402e | 427 | * '_httpCreate()' - Create an unconnected HTTP connection. |
ef416fc2 | 428 | */ |
429 | ||
1ff0402e MS |
430 | http_t * /* O - HTTP connection */ |
431 | _httpCreate( | |
432 | const char *host, /* I - Hostname */ | |
ef416fc2 | 433 | int port, /* I - Port number */ |
1ff0402e | 434 | http_encryption_t encryption) /* I - Encryption to use */ |
ef416fc2 | 435 | { |
436 | http_t *http; /* New HTTP connection */ | |
437 | http_addrlist_t *addrlist; /* Host address data */ | |
438 | char service[255]; /* Service name */ | |
439 | ||
440 | ||
e07d4801 | 441 | DEBUG_printf(("4_httpCreate(host=\"%s\", port=%d, encryption=%d)", |
1ff0402e | 442 | host, port, encryption)); |
ef416fc2 | 443 | |
444 | if (!host) | |
445 | return (NULL); | |
446 | ||
447 | httpInitialize(); | |
448 | ||
449 | /* | |
450 | * Lookup the host... | |
451 | */ | |
452 | ||
453 | sprintf(service, "%d", port); | |
454 | ||
455 | if ((addrlist = httpAddrGetList(host, AF_UNSPEC, service)) == NULL) | |
456 | return (NULL); | |
457 | ||
458 | /* | |
459 | * Allocate memory for the structure... | |
460 | */ | |
461 | ||
91c84a35 MS |
462 | if ((http = calloc(sizeof(http_t), 1)) == NULL) |
463 | { | |
464 | httpAddrFreeList(addrlist); | |
ef416fc2 | 465 | return (NULL); |
91c84a35 | 466 | } |
ef416fc2 | 467 | |
1ff0402e MS |
468 | /* |
469 | * Initialize the HTTP data... | |
470 | */ | |
471 | ||
ef416fc2 | 472 | http->activity = time(NULL); |
1ff0402e MS |
473 | http->addrlist = addrlist; |
474 | http->blocking = 1; | |
ef416fc2 | 475 | http->fd = -1; |
f7deaa1a | 476 | #ifdef HAVE_GSSAPI |
1ff0402e MS |
477 | http->gssctx = GSS_C_NO_CONTEXT; |
478 | http->gssname = GSS_C_NO_NAME; | |
f7deaa1a | 479 | #endif /* HAVE_GSSAPI */ |
1ff0402e | 480 | http->version = HTTP_1_1; |
f7deaa1a | 481 | |
1ff0402e | 482 | strlcpy(http->hostname, host, sizeof(http->hostname)); |
ef416fc2 | 483 | |
484 | if (port == 443) /* Always use encryption for https */ | |
485 | http->encryption = HTTP_ENCRYPT_ALWAYS; | |
486 | else | |
487 | http->encryption = encryption; | |
488 | ||
489 | /* | |
1ff0402e | 490 | * Return the new structure... |
ef416fc2 | 491 | */ |
492 | ||
1ff0402e | 493 | return (http); |
ef416fc2 | 494 | } |
495 | ||
496 | ||
497 | /* | |
498 | * 'httpDelete()' - Send a DELETE request to the server. | |
499 | */ | |
500 | ||
501 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 502 | httpDelete(http_t *http, /* I - Connection to server */ |
ef416fc2 | 503 | const char *uri) /* I - URI to delete */ |
504 | { | |
505 | return (http_send(http, HTTP_DELETE, uri)); | |
506 | } | |
507 | ||
508 | ||
509 | /* | |
510 | * 'httpEncryption()' - Set the required encryption on the link. | |
511 | */ | |
512 | ||
513 | int /* O - -1 on error, 0 on success */ | |
568fa3fa | 514 | httpEncryption(http_t *http, /* I - Connection to server */ |
ef416fc2 | 515 | http_encryption_t e) /* I - New encryption preference */ |
516 | { | |
e07d4801 | 517 | DEBUG_printf(("httpEncryption(http=%p, e=%d)", http, e)); |
ef416fc2 | 518 | |
519 | #ifdef HAVE_SSL | |
520 | if (!http) | |
521 | return (0); | |
522 | ||
523 | http->encryption = e; | |
524 | ||
525 | if ((http->encryption == HTTP_ENCRYPT_ALWAYS && !http->tls) || | |
526 | (http->encryption == HTTP_ENCRYPT_NEVER && http->tls)) | |
527 | return (httpReconnect(http)); | |
528 | else if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls) | |
529 | return (http_upgrade(http)); | |
530 | else | |
531 | return (0); | |
532 | #else | |
533 | if (e == HTTP_ENCRYPT_ALWAYS || e == HTTP_ENCRYPT_REQUIRED) | |
534 | return (-1); | |
535 | else | |
536 | return (0); | |
537 | #endif /* HAVE_SSL */ | |
538 | } | |
539 | ||
540 | ||
ecdc0628 | 541 | /* |
542 | * 'httpError()' - Get the last error on a connection. | |
543 | */ | |
544 | ||
545 | int /* O - Error code (errno) value */ | |
568fa3fa | 546 | httpError(http_t *http) /* I - Connection to server */ |
ecdc0628 | 547 | { |
548 | if (http) | |
549 | return (http->error); | |
550 | else | |
551 | return (EINVAL); | |
552 | } | |
553 | ||
554 | ||
ef416fc2 | 555 | /* |
556 | * 'httpFlush()' - Flush data from a HTTP connection. | |
557 | */ | |
558 | ||
559 | void | |
568fa3fa | 560 | httpFlush(http_t *http) /* I - Connection to server */ |
ef416fc2 | 561 | { |
f8b3a85b MS |
562 | char buffer[8192]; /* Junk buffer */ |
563 | int blocking; /* To block or not to block */ | |
564 | http_state_t oldstate; /* Old state */ | |
ef416fc2 | 565 | |
566 | ||
f11a948a MS |
567 | DEBUG_printf(("httpFlush(http=%p), state=%s", http, |
568 | http_states[http->state])); | |
ef416fc2 | 569 | |
fa73b229 | 570 | /* |
571 | * Temporarily set non-blocking mode so we don't get stuck in httpRead()... | |
572 | */ | |
573 | ||
574 | blocking = http->blocking; | |
575 | http->blocking = 0; | |
576 | ||
577 | /* | |
578 | * Read any data we can... | |
579 | */ | |
580 | ||
f8b3a85b | 581 | oldstate = http->state; |
a4d04587 | 582 | while (httpRead2(http, buffer, sizeof(buffer)) > 0); |
fa73b229 | 583 | |
584 | /* | |
585 | * Restore blocking and reset the connection if we didn't get all of | |
586 | * the remaining data... | |
587 | */ | |
588 | ||
589 | http->blocking = blocking; | |
590 | ||
f8b3a85b | 591 | if (http->state == oldstate && http->fd >= 0) |
fa73b229 | 592 | { |
593 | /* | |
594 | * Didn't get the data back, so close the current connection. | |
595 | */ | |
596 | ||
597 | http->state = HTTP_WAITING; | |
598 | ||
599 | #ifdef HAVE_SSL | |
600 | if (http->tls) | |
601 | http_shutdown_ssl(http); | |
602 | #endif /* HAVE_SSL */ | |
603 | ||
604 | #ifdef WIN32 | |
605 | closesocket(http->fd); | |
606 | #else | |
607 | close(http->fd); | |
608 | #endif /* WIN32 */ | |
609 | ||
610 | http->fd = -1; | |
611 | } | |
ef416fc2 | 612 | } |
613 | ||
614 | ||
615 | /* | |
616 | * 'httpFlushWrite()' - Flush data in write buffer. | |
617 | * | |
426c6a59 | 618 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 619 | */ |
620 | ||
621 | int /* O - Bytes written or -1 on error */ | |
568fa3fa | 622 | httpFlushWrite(http_t *http) /* I - Connection to server */ |
ef416fc2 | 623 | { |
624 | int bytes; /* Bytes written */ | |
625 | ||
626 | ||
e07d4801 | 627 | DEBUG_printf(("httpFlushWrite(http=%p)", http)); |
ef416fc2 | 628 | |
629 | if (!http || !http->wused) | |
f8b3a85b MS |
630 | { |
631 | DEBUG_puts(http ? "1httpFlushWrite: Write buffer is empty." : | |
632 | "1httpFlushWrite: No connection."); | |
ef416fc2 | 633 | return (0); |
f8b3a85b | 634 | } |
ef416fc2 | 635 | |
636 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
637 | bytes = http_write_chunk(http, http->wbuffer, http->wused); | |
638 | else | |
639 | bytes = http_write(http, http->wbuffer, http->wused); | |
640 | ||
641 | http->wused = 0; | |
642 | ||
f8b3a85b MS |
643 | DEBUG_printf(("1httpFlushWrite: Returning %d.", bytes)); |
644 | ||
ef416fc2 | 645 | return (bytes); |
646 | } | |
647 | ||
648 | ||
649 | /* | |
650 | * 'httpGet()' - Send a GET request to the server. | |
651 | */ | |
652 | ||
653 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 654 | httpGet(http_t *http, /* I - Connection to server */ |
ef416fc2 | 655 | const char *uri) /* I - URI to get */ |
656 | { | |
657 | return (http_send(http, HTTP_GET, uri)); | |
658 | } | |
659 | ||
660 | ||
355e94dc MS |
661 | /* |
662 | * 'httpGetAuthString()' - Get the current authorization string. | |
663 | * | |
664 | * The authorization string is set by cupsDoAuthentication() and | |
665 | * httpSetAuthString(). Use httpGetAuthString() to retrieve the | |
666 | * string to use with httpSetField() for the HTTP_FIELD_AUTHORIZATION | |
667 | * value. | |
668 | * | |
426c6a59 | 669 | * @since CUPS 1.3/Mac OS X 10.5@ |
355e94dc MS |
670 | */ |
671 | ||
672 | char * /* O - Authorization string */ | |
568fa3fa | 673 | httpGetAuthString(http_t *http) /* I - Connection to server */ |
355e94dc MS |
674 | { |
675 | if (http) | |
676 | return (http->authstring); | |
677 | else | |
678 | return (NULL); | |
679 | } | |
680 | ||
681 | ||
ecdc0628 | 682 | /* |
683 | * 'httpGetBlocking()' - Get the blocking/non-block state of a connection. | |
684 | * | |
426c6a59 | 685 | * @since CUPS 1.2/Mac OS X 10.5@ |
ecdc0628 | 686 | */ |
687 | ||
688 | int /* O - 1 if blocking, 0 if non-blocking */ | |
568fa3fa | 689 | httpGetBlocking(http_t *http) /* I - Connection to server */ |
ecdc0628 | 690 | { |
691 | return (http ? http->blocking : 0); | |
692 | } | |
693 | ||
694 | ||
695 | /* | |
696 | * 'httpGetCookie()' - Get any cookie data from the response. | |
757d2cad | 697 | * |
426c6a59 | 698 | * @since CUPS 1.1.19/Mac OS X 10.3@ |
ecdc0628 | 699 | */ |
700 | ||
701 | const char * /* O - Cookie data or NULL */ | |
702 | httpGetCookie(http_t *http) /* I - HTTP connecion */ | |
703 | { | |
704 | return (http ? http->cookie : NULL); | |
705 | } | |
706 | ||
707 | ||
708 | /* | |
709 | * 'httpGetFd()' - Get the file descriptor associated with a connection. | |
710 | * | |
426c6a59 | 711 | * @since CUPS 1.2/Mac OS X 10.5@ |
ecdc0628 | 712 | */ |
713 | ||
714 | int /* O - File descriptor or -1 if none */ | |
568fa3fa | 715 | httpGetFd(http_t *http) /* I - Connection to server */ |
ecdc0628 | 716 | { |
717 | return (http ? http->fd : -1); | |
718 | } | |
719 | ||
720 | ||
721 | /* | |
722 | * 'httpGetField()' - Get a field value from a request/response. | |
723 | */ | |
724 | ||
725 | const char * /* O - Field value */ | |
568fa3fa | 726 | httpGetField(http_t *http, /* I - Connection to server */ |
ecdc0628 | 727 | http_field_t field) /* I - Field to get */ |
728 | { | |
729 | if (!http || field <= HTTP_FIELD_UNKNOWN || field >= HTTP_FIELD_MAX) | |
730 | return (NULL); | |
ef55b745 | 731 | else if (field == HTTP_FIELD_AUTHORIZATION && |
f7deaa1a | 732 | http->field_authorization) |
733 | { | |
734 | /* | |
735 | * Special case for WWW-Authenticate: as its contents can be | |
736 | * longer than HTTP_MAX_VALUE... | |
737 | */ | |
738 | ||
739 | return (http->field_authorization); | |
740 | } | |
ecdc0628 | 741 | else |
742 | return (http->fields[field]); | |
743 | } | |
744 | ||
745 | ||
746 | /* | |
747 | * 'httpGetLength()' - Get the amount of data remaining from the | |
748 | * content-length or transfer-encoding fields. | |
749 | * | |
750 | * This function is deprecated and will not return lengths larger than | |
751 | * 2^31 - 1; use httpGetLength2() instead. | |
752 | * | |
753 | * @deprecated@ | |
754 | */ | |
755 | ||
756 | int /* O - Content length */ | |
568fa3fa | 757 | httpGetLength(http_t *http) /* I - Connection to server */ |
ecdc0628 | 758 | { |
759 | /* | |
760 | * Get the read content length and return the 32-bit value. | |
761 | */ | |
762 | ||
763 | if (http) | |
764 | { | |
765 | httpGetLength2(http); | |
766 | ||
767 | return (http->_data_remaining); | |
768 | } | |
769 | else | |
770 | return (-1); | |
771 | } | |
772 | ||
773 | ||
774 | /* | |
775 | * 'httpGetLength2()' - Get the amount of data remaining from the | |
776 | * content-length or transfer-encoding fields. | |
777 | * | |
778 | * This function returns the complete content length, even for | |
779 | * content larger than 2^31 - 1. | |
780 | * | |
426c6a59 | 781 | * @since CUPS 1.2/Mac OS X 10.5@ |
ecdc0628 | 782 | */ |
783 | ||
784 | off_t /* O - Content length */ | |
568fa3fa | 785 | httpGetLength2(http_t *http) /* I - Connection to server */ |
ecdc0628 | 786 | { |
f11a948a MS |
787 | DEBUG_printf(("2httpGetLength2(http=%p), state=%s", http, |
788 | http_states[http->state])); | |
ecdc0628 | 789 | |
790 | if (!http) | |
791 | return (-1); | |
792 | ||
793 | if (!strcasecmp(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked")) | |
794 | { | |
e07d4801 | 795 | DEBUG_puts("4httpGetLength2: chunked request!"); |
ecdc0628 | 796 | |
797 | http->data_encoding = HTTP_ENCODE_CHUNKED; | |
798 | http->data_remaining = 0; | |
799 | } | |
800 | else | |
801 | { | |
802 | http->data_encoding = HTTP_ENCODE_LENGTH; | |
803 | ||
804 | /* | |
805 | * The following is a hack for HTTP servers that don't send a | |
806 | * content-length or transfer-encoding field... | |
807 | * | |
808 | * If there is no content-length then the connection must close | |
809 | * after the transfer is complete... | |
810 | */ | |
811 | ||
b86bc4cf | 812 | if (!http->fields[HTTP_FIELD_CONTENT_LENGTH][0]) |
813 | { | |
814 | /* | |
815 | * Default content length is 0 for errors and 2^31-1 for other | |
816 | * successful requests... | |
817 | */ | |
818 | ||
819 | if (http->status >= HTTP_MULTIPLE_CHOICES) | |
820 | http->data_remaining = 0; | |
821 | else | |
822 | http->data_remaining = 2147483647; | |
823 | } | |
ecdc0628 | 824 | else |
825 | http->data_remaining = strtoll(http->fields[HTTP_FIELD_CONTENT_LENGTH], | |
826 | NULL, 10); | |
827 | ||
e07d4801 | 828 | DEBUG_printf(("4httpGetLength2: content_length=" CUPS_LLFMT, |
ecdc0628 | 829 | CUPS_LLCAST http->data_remaining)); |
830 | } | |
831 | ||
832 | if (http->data_remaining <= INT_MAX) | |
833 | http->_data_remaining = (int)http->data_remaining; | |
834 | else | |
835 | http->_data_remaining = INT_MAX; | |
836 | ||
837 | return (http->data_remaining); | |
838 | } | |
839 | ||
840 | ||
841 | /* | |
842 | * 'httpGetStatus()' - Get the status of the last HTTP request. | |
843 | * | |
426c6a59 | 844 | * @since CUPS 1.2/Mac OS X 10.5@ |
ecdc0628 | 845 | */ |
846 | ||
847 | http_status_t /* O - HTTP status */ | |
568fa3fa | 848 | httpGetStatus(http_t *http) /* I - Connection to server */ |
ecdc0628 | 849 | { |
850 | return (http ? http->status : HTTP_ERROR); | |
851 | } | |
852 | ||
853 | ||
ef416fc2 | 854 | /* |
855 | * 'httpGetSubField()' - Get a sub-field value. | |
856 | * | |
857 | * @deprecated@ | |
858 | */ | |
859 | ||
860 | char * /* O - Value or NULL */ | |
568fa3fa | 861 | httpGetSubField(http_t *http, /* I - Connection to server */ |
ef416fc2 | 862 | http_field_t field, /* I - Field index */ |
863 | const char *name, /* I - Name of sub-field */ | |
864 | char *value) /* O - Value string */ | |
865 | { | |
866 | return (httpGetSubField2(http, field, name, value, HTTP_MAX_VALUE)); | |
867 | } | |
868 | ||
869 | ||
870 | /* | |
871 | * 'httpGetSubField2()' - Get a sub-field value. | |
872 | * | |
426c6a59 | 873 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 874 | */ |
875 | ||
876 | char * /* O - Value or NULL */ | |
568fa3fa | 877 | httpGetSubField2(http_t *http, /* I - Connection to server */ |
ef416fc2 | 878 | http_field_t field, /* I - Field index */ |
879 | const char *name, /* I - Name of sub-field */ | |
880 | char *value, /* O - Value string */ | |
881 | int valuelen) /* I - Size of value buffer */ | |
882 | { | |
883 | const char *fptr; /* Pointer into field */ | |
884 | char temp[HTTP_MAX_VALUE], /* Temporary buffer for name */ | |
885 | *ptr, /* Pointer into string buffer */ | |
886 | *end; /* End of value buffer */ | |
887 | ||
e07d4801 MS |
888 | DEBUG_printf(("2httpGetSubField2(http=%p, field=%d, name=\"%s\", value=%p, " |
889 | "valuelen=%d)", http, field, name, value, valuelen)); | |
ef416fc2 | 890 | |
891 | if (!http || !name || !value || valuelen < 2 || | |
ecdc0628 | 892 | field <= HTTP_FIELD_UNKNOWN || field >= HTTP_FIELD_MAX) |
ef416fc2 | 893 | return (NULL); |
894 | ||
895 | end = value + valuelen - 1; | |
896 | ||
897 | for (fptr = http->fields[field]; *fptr;) | |
898 | { | |
899 | /* | |
900 | * Skip leading whitespace... | |
901 | */ | |
902 | ||
903 | while (isspace(*fptr & 255)) | |
904 | fptr ++; | |
905 | ||
906 | if (*fptr == ',') | |
907 | { | |
908 | fptr ++; | |
909 | continue; | |
910 | } | |
911 | ||
912 | /* | |
913 | * Get the sub-field name... | |
914 | */ | |
915 | ||
916 | for (ptr = temp; | |
917 | *fptr && *fptr != '=' && !isspace(*fptr & 255) && | |
918 | ptr < (temp + sizeof(temp) - 1); | |
919 | *ptr++ = *fptr++); | |
920 | ||
921 | *ptr = '\0'; | |
922 | ||
e07d4801 | 923 | DEBUG_printf(("4httpGetSubField2: name=\"%s\"", temp)); |
ef416fc2 | 924 | |
925 | /* | |
926 | * Skip trailing chars up to the '='... | |
927 | */ | |
928 | ||
929 | while (isspace(*fptr & 255)) | |
930 | fptr ++; | |
931 | ||
932 | if (!*fptr) | |
933 | break; | |
934 | ||
935 | if (*fptr != '=') | |
936 | continue; | |
937 | ||
938 | /* | |
939 | * Skip = and leading whitespace... | |
940 | */ | |
941 | ||
942 | fptr ++; | |
943 | ||
944 | while (isspace(*fptr & 255)) | |
945 | fptr ++; | |
946 | ||
947 | if (*fptr == '\"') | |
948 | { | |
949 | /* | |
950 | * Read quoted string... | |
951 | */ | |
952 | ||
953 | for (ptr = value, fptr ++; | |
954 | *fptr && *fptr != '\"' && ptr < end; | |
955 | *ptr++ = *fptr++); | |
956 | ||
957 | *ptr = '\0'; | |
958 | ||
959 | while (*fptr && *fptr != '\"') | |
960 | fptr ++; | |
961 | ||
962 | if (*fptr) | |
963 | fptr ++; | |
964 | } | |
965 | else | |
966 | { | |
967 | /* | |
968 | * Read unquoted string... | |
969 | */ | |
970 | ||
971 | for (ptr = value; | |
972 | *fptr && !isspace(*fptr & 255) && *fptr != ',' && ptr < end; | |
973 | *ptr++ = *fptr++); | |
974 | ||
975 | *ptr = '\0'; | |
976 | ||
977 | while (*fptr && !isspace(*fptr & 255) && *fptr != ',') | |
978 | fptr ++; | |
979 | } | |
980 | ||
e07d4801 | 981 | DEBUG_printf(("4httpGetSubField2: value=\"%s\"", value)); |
ef416fc2 | 982 | |
983 | /* | |
984 | * See if this is the one... | |
985 | */ | |
986 | ||
987 | if (!strcmp(name, temp)) | |
e07d4801 MS |
988 | { |
989 | DEBUG_printf(("3httpGetSubField2: Returning \"%s\"", value)); | |
ef416fc2 | 990 | return (value); |
e07d4801 | 991 | } |
ef416fc2 | 992 | } |
993 | ||
994 | value[0] = '\0'; | |
995 | ||
e07d4801 MS |
996 | DEBUG_puts("3httpGetSubField2: Returning NULL"); |
997 | ||
ef416fc2 | 998 | return (NULL); |
999 | } | |
1000 | ||
1001 | ||
ef416fc2 | 1002 | /* |
1003 | * 'httpGets()' - Get a line of text from a HTTP connection. | |
1004 | */ | |
1005 | ||
1006 | char * /* O - Line or NULL */ | |
1007 | httpGets(char *line, /* I - Line to read into */ | |
1008 | int length, /* I - Max length of buffer */ | |
568fa3fa | 1009 | http_t *http) /* I - Connection to server */ |
ef416fc2 | 1010 | { |
1011 | char *lineptr, /* Pointer into line */ | |
1012 | *lineend, /* End of line */ | |
1013 | *bufptr, /* Pointer into input buffer */ | |
1014 | *bufend; /* Pointer to end of buffer */ | |
1015 | int bytes, /* Number of bytes read */ | |
1016 | eol; /* End-of-line? */ | |
1017 | ||
1018 | ||
e07d4801 | 1019 | DEBUG_printf(("2httpGets(line=%p, length=%d, http=%p)", line, length, http)); |
ef416fc2 | 1020 | |
1021 | if (http == NULL || line == NULL) | |
1022 | return (NULL); | |
1023 | ||
1024 | /* | |
1025 | * Read a line from the buffer... | |
1026 | */ | |
f11a948a MS |
1027 | |
1028 | http->error = 0; | |
1029 | lineptr = line; | |
1030 | lineend = line + length - 1; | |
1031 | eol = 0; | |
ef416fc2 | 1032 | |
1033 | while (lineptr < lineend) | |
1034 | { | |
1035 | /* | |
1036 | * Pre-load the buffer as needed... | |
1037 | */ | |
1038 | ||
1039 | #ifdef WIN32 | |
1040 | WSASetLastError(0); | |
1041 | #else | |
1042 | errno = 0; | |
1043 | #endif /* WIN32 */ | |
1044 | ||
1045 | while (http->used == 0) | |
1046 | { | |
1047 | /* | |
1048 | * No newline; see if there is more data to be read... | |
1049 | */ | |
1050 | ||
38e73f87 | 1051 | if (!http->blocking && !_httpWait(http, 10000, 1)) |
89d46774 | 1052 | { |
e07d4801 | 1053 | DEBUG_puts("3httpGets: Timed out!"); |
b86bc4cf | 1054 | #ifdef WIN32 |
1055 | http->error = WSAETIMEDOUT; | |
1056 | #else | |
89d46774 | 1057 | http->error = ETIMEDOUT; |
b86bc4cf | 1058 | #endif /* WIN32 */ |
ef416fc2 | 1059 | return (NULL); |
89d46774 | 1060 | } |
ef416fc2 | 1061 | |
1062 | #ifdef HAVE_SSL | |
1063 | if (http->tls) | |
1064 | bytes = http_read_ssl(http, http->buffer + http->used, | |
1065 | HTTP_MAX_BUFFER - http->used); | |
1066 | else | |
1067 | #endif /* HAVE_SSL */ | |
1068 | bytes = recv(http->fd, http->buffer + http->used, | |
1069 | HTTP_MAX_BUFFER - http->used, 0); | |
1070 | ||
e07d4801 | 1071 | DEBUG_printf(("4httpGets: read %d bytes...", bytes)); |
ef416fc2 | 1072 | |
1073 | if (bytes < 0) | |
1074 | { | |
1075 | /* | |
1076 | * Nope, can't get a line this time... | |
1077 | */ | |
1078 | ||
1079 | #ifdef WIN32 | |
1080 | if (WSAGetLastError() != http->error) | |
1081 | { | |
1082 | http->error = WSAGetLastError(); | |
1083 | continue; | |
1084 | } | |
1085 | ||
e07d4801 | 1086 | DEBUG_printf(("3httpGets: recv() error %d!", WSAGetLastError())); |
ef416fc2 | 1087 | #else |
e07d4801 | 1088 | DEBUG_printf(("3httpGets: recv() error %d!", errno)); |
ef416fc2 | 1089 | |
e07d4801 | 1090 | if (errno == EINTR || errno == EAGAIN) |
ef416fc2 | 1091 | continue; |
1092 | else if (errno != http->error) | |
1093 | { | |
1094 | http->error = errno; | |
1095 | continue; | |
1096 | } | |
1097 | #endif /* WIN32 */ | |
1098 | ||
1099 | return (NULL); | |
1100 | } | |
1101 | else if (bytes == 0) | |
1102 | { | |
1103 | http->error = EPIPE; | |
1104 | ||
1105 | return (NULL); | |
1106 | } | |
1107 | ||
1108 | /* | |
1109 | * Yup, update the amount used... | |
1110 | */ | |
1111 | ||
1112 | http->used += bytes; | |
1113 | } | |
1114 | ||
1115 | /* | |
1116 | * Now copy as much of the current line as possible... | |
1117 | */ | |
1118 | ||
1119 | for (bufptr = http->buffer, bufend = http->buffer + http->used; | |
1120 | lineptr < lineend && bufptr < bufend;) | |
1121 | { | |
1122 | if (*bufptr == 0x0a) | |
1123 | { | |
1124 | eol = 1; | |
1125 | bufptr ++; | |
1126 | break; | |
1127 | } | |
1128 | else if (*bufptr == 0x0d) | |
1129 | bufptr ++; | |
1130 | else | |
1131 | *lineptr++ = *bufptr++; | |
1132 | } | |
1133 | ||
b86bc4cf | 1134 | http->used -= (int)(bufptr - http->buffer); |
ef416fc2 | 1135 | if (http->used > 0) |
1136 | memmove(http->buffer, bufptr, http->used); | |
1137 | ||
1138 | if (eol) | |
1139 | { | |
1140 | /* | |
1141 | * End of line... | |
1142 | */ | |
1143 | ||
1144 | http->activity = time(NULL); | |
1145 | ||
1146 | *lineptr = '\0'; | |
ef55b745 | 1147 | |
e07d4801 | 1148 | DEBUG_printf(("3httpGets: Returning \"%s\"", line)); |
ef416fc2 | 1149 | |
1150 | return (line); | |
1151 | } | |
1152 | } | |
1153 | ||
e07d4801 | 1154 | DEBUG_puts("3httpGets: No new line available!"); |
ef416fc2 | 1155 | |
1156 | return (NULL); | |
1157 | } | |
1158 | ||
1159 | ||
1160 | /* | |
1161 | * 'httpHead()' - Send a HEAD request to the server. | |
1162 | */ | |
1163 | ||
1164 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 1165 | httpHead(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1166 | const char *uri) /* I - URI for head */ |
1167 | { | |
e07d4801 | 1168 | DEBUG_printf(("httpHead(http=%p, uri=\"%s\")", http, uri)); |
ef416fc2 | 1169 | return (http_send(http, HTTP_HEAD, uri)); |
1170 | } | |
1171 | ||
1172 | ||
1173 | /* | |
1174 | * 'httpInitialize()' - Initialize the HTTP interface library and set the | |
1175 | * default HTTP proxy (if any). | |
1176 | */ | |
1177 | ||
1178 | void | |
1179 | httpInitialize(void) | |
1180 | { | |
1181 | #ifdef HAVE_LIBSSL | |
1182 | # ifndef WIN32 | |
1183 | struct timeval curtime; /* Current time in microseconds */ | |
1184 | # endif /* !WIN32 */ | |
1185 | int i; /* Looping var */ | |
1186 | unsigned char data[1024]; /* Seed data */ | |
1187 | #endif /* HAVE_LIBSSL */ | |
1188 | ||
1189 | #ifdef WIN32 | |
1190 | WSADATA winsockdata; /* WinSock data */ | |
1191 | static int initialized = 0; /* Has WinSock been initialized? */ | |
1192 | ||
1193 | ||
1194 | if (!initialized) | |
1195 | WSAStartup(MAKEWORD(1,1), &winsockdata); | |
fa73b229 | 1196 | #elif !defined(SO_NOSIGPIPE) |
ef416fc2 | 1197 | /* |
1198 | * Ignore SIGPIPE signals... | |
1199 | */ | |
1200 | ||
fa73b229 | 1201 | # ifdef HAVE_SIGSET |
1202 | sigset(SIGPIPE, SIG_IGN); | |
1203 | # elif defined(HAVE_SIGACTION) | |
1204 | struct sigaction action; /* POSIX sigaction data */ | |
1205 | ||
1206 | ||
ef416fc2 | 1207 | memset(&action, 0, sizeof(action)); |
1208 | action.sa_handler = SIG_IGN; | |
1209 | sigaction(SIGPIPE, &action, NULL); | |
fa73b229 | 1210 | # else |
ef416fc2 | 1211 | signal(SIGPIPE, SIG_IGN); |
fa73b229 | 1212 | # endif /* !SO_NOSIGPIPE */ |
ef416fc2 | 1213 | #endif /* WIN32 */ |
1214 | ||
1215 | #ifdef HAVE_GNUTLS | |
1216 | gnutls_global_init(); | |
1217 | #endif /* HAVE_GNUTLS */ | |
1218 | ||
1219 | #ifdef HAVE_LIBSSL | |
1220 | SSL_load_error_strings(); | |
1221 | SSL_library_init(); | |
1222 | ||
1223 | /* | |
1224 | * Using the current time is a dubious random seed, but on some systems | |
1225 | * it is the best we can do (on others, this seed isn't even used...) | |
1226 | */ | |
1227 | ||
dfd5680b MS |
1228 | # ifdef WIN32 |
1229 | # else | |
ef416fc2 | 1230 | gettimeofday(&curtime, NULL); |
1231 | srand(curtime.tv_sec + curtime.tv_usec); | |
dfd5680b | 1232 | # endif /* WIN32 */ |
ef416fc2 | 1233 | |
1234 | for (i = 0; i < sizeof(data); i ++) | |
dfd5680b | 1235 | data[i] = rand(); |
ef416fc2 | 1236 | |
dfd5680b | 1237 | RAND_seed(data, sizeof(data)); |
ef416fc2 | 1238 | #endif /* HAVE_LIBSSL */ |
1239 | } | |
1240 | ||
1241 | ||
1242 | /* | |
1243 | * 'httpOptions()' - Send an OPTIONS request to the server. | |
1244 | */ | |
1245 | ||
1246 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 1247 | httpOptions(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1248 | const char *uri) /* I - URI for options */ |
1249 | { | |
1250 | return (http_send(http, HTTP_OPTIONS, uri)); | |
1251 | } | |
1252 | ||
1253 | ||
1254 | /* | |
1255 | * 'httpPost()' - Send a POST request to the server. | |
1256 | */ | |
1257 | ||
1258 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 1259 | httpPost(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1260 | const char *uri) /* I - URI for post */ |
1261 | { | |
1262 | return (http_send(http, HTTP_POST, uri)); | |
1263 | } | |
1264 | ||
1265 | ||
1266 | /* | |
1267 | * 'httpPrintf()' - Print a formatted string to a HTTP connection. | |
ecdc0628 | 1268 | * |
1269 | * @private@ | |
ef416fc2 | 1270 | */ |
1271 | ||
1272 | int /* O - Number of bytes written */ | |
568fa3fa | 1273 | httpPrintf(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1274 | const char *format, /* I - printf-style format string */ |
1275 | ...) /* I - Additional args as needed */ | |
1276 | { | |
1277 | int bytes; /* Number of bytes to write */ | |
1278 | char buf[16384]; /* Buffer for formatted string */ | |
1279 | va_list ap; /* Variable argument pointer */ | |
1280 | ||
1281 | ||
e07d4801 | 1282 | DEBUG_printf(("2httpPrintf(http=%p, format=\"%s\", ...)", http, format)); |
ef416fc2 | 1283 | |
1284 | va_start(ap, format); | |
1285 | bytes = vsnprintf(buf, sizeof(buf), format, ap); | |
1286 | va_end(ap); | |
1287 | ||
e07d4801 | 1288 | DEBUG_printf(("3httpPrintf: %s", buf)); |
ef416fc2 | 1289 | |
d09495fa | 1290 | if (http->data_encoding == HTTP_ENCODE_FIELDS) |
1291 | return (httpWrite2(http, buf, bytes)); | |
1292 | else | |
ef416fc2 | 1293 | { |
d09495fa | 1294 | if (http->wused) |
1295 | { | |
e07d4801 | 1296 | DEBUG_puts("4httpPrintf: flushing existing data..."); |
ef416fc2 | 1297 | |
d09495fa | 1298 | if (httpFlushWrite(http) < 0) |
1299 | return (-1); | |
1300 | } | |
ef416fc2 | 1301 | |
d09495fa | 1302 | return (http_write(http, buf, bytes)); |
1303 | } | |
ef416fc2 | 1304 | } |
1305 | ||
1306 | ||
1307 | /* | |
1308 | * 'httpPut()' - Send a PUT request to the server. | |
1309 | */ | |
1310 | ||
1311 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 1312 | httpPut(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1313 | const char *uri) /* I - URI to put */ |
1314 | { | |
e07d4801 | 1315 | DEBUG_printf(("httpPut(http=%p, uri=\"%s\")", http, uri)); |
ef416fc2 | 1316 | return (http_send(http, HTTP_PUT, uri)); |
1317 | } | |
1318 | ||
1319 | ||
1320 | /* | |
1321 | * 'httpRead()' - Read data from a HTTP connection. | |
a4d04587 | 1322 | * |
1323 | * This function is deprecated. Use the httpRead2() function which can | |
1324 | * read more than 2GB of data. | |
1325 | * | |
1326 | * @deprecated@ | |
ef416fc2 | 1327 | */ |
1328 | ||
1329 | int /* O - Number of bytes read */ | |
568fa3fa | 1330 | httpRead(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1331 | char *buffer, /* I - Buffer for data */ |
1332 | int length) /* I - Maximum number of bytes */ | |
1333 | { | |
a4d04587 | 1334 | return ((int)httpRead2(http, buffer, length)); |
1335 | } | |
1336 | ||
1337 | ||
1338 | /* | |
1339 | * 'httpRead2()' - Read data from a HTTP connection. | |
ecdc0628 | 1340 | * |
426c6a59 | 1341 | * @since CUPS 1.2/Mac OS X 10.5@ |
a4d04587 | 1342 | */ |
1343 | ||
1344 | ssize_t /* O - Number of bytes read */ | |
568fa3fa | 1345 | httpRead2(http_t *http, /* I - Connection to server */ |
a4d04587 | 1346 | char *buffer, /* I - Buffer for data */ |
1347 | size_t length) /* I - Maximum number of bytes */ | |
1348 | { | |
1349 | ssize_t bytes; /* Bytes read */ | |
ef416fc2 | 1350 | char len[32]; /* Length string */ |
1351 | ||
1352 | ||
e07d4801 | 1353 | DEBUG_printf(("httpRead2(http=%p, buffer=%p, length=" CUPS_LLFMT ")", |
a603edef | 1354 | http, buffer, CUPS_LLCAST length)); |
ef416fc2 | 1355 | |
1356 | if (http == NULL || buffer == NULL) | |
1357 | return (-1); | |
1358 | ||
1359 | http->activity = time(NULL); | |
f11a948a | 1360 | http->error = 0; |
ef416fc2 | 1361 | |
1362 | if (length <= 0) | |
1363 | return (0); | |
1364 | ||
1365 | if (http->data_encoding == HTTP_ENCODE_CHUNKED && | |
1366 | http->data_remaining <= 0) | |
1367 | { | |
e07d4801 | 1368 | DEBUG_puts("2httpRead2: Getting chunk length..."); |
ef416fc2 | 1369 | |
1370 | if (httpGets(len, sizeof(len), http) == NULL) | |
1371 | { | |
e07d4801 | 1372 | DEBUG_puts("1httpRead2: Could not get length!"); |
ef416fc2 | 1373 | return (0); |
1374 | } | |
1375 | ||
1376 | http->data_remaining = strtoll(len, NULL, 16); | |
1377 | if (http->data_remaining < 0) | |
1378 | { | |
e07d4801 | 1379 | DEBUG_puts("1httpRead2: Negative chunk length!"); |
ef416fc2 | 1380 | return (0); |
1381 | } | |
1382 | } | |
1383 | ||
e07d4801 | 1384 | DEBUG_printf(("2httpRead2: data_remaining=" CUPS_LLFMT, |
ef416fc2 | 1385 | CUPS_LLCAST http->data_remaining)); |
1386 | ||
1387 | if (http->data_remaining <= 0) | |
1388 | { | |
1389 | /* | |
1390 | * A zero-length chunk ends a transfer; unless we are reading POST | |
1391 | * data, go idle... | |
1392 | */ | |
1393 | ||
1394 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
1395 | httpGets(len, sizeof(len), http); | |
1396 | ||
1397 | if (http->state == HTTP_POST_RECV) | |
1398 | http->state ++; | |
1399 | else | |
1400 | http->state = HTTP_WAITING; | |
1401 | ||
1402 | /* | |
1403 | * Prevent future reads for this request... | |
1404 | */ | |
1405 | ||
1406 | http->data_encoding = HTTP_ENCODE_LENGTH; | |
1407 | ||
1408 | return (0); | |
1409 | } | |
b86bc4cf | 1410 | else if (length > (size_t)http->data_remaining) |
1411 | length = (size_t)http->data_remaining; | |
ef416fc2 | 1412 | |
1413 | if (http->used == 0 && length <= 256) | |
1414 | { | |
1415 | /* | |
1416 | * Buffer small reads for better performance... | |
1417 | */ | |
1418 | ||
ed486911 | 1419 | if (!http->blocking && !httpWait(http, 10000)) |
ef416fc2 | 1420 | return (0); |
1421 | ||
1422 | if (http->data_remaining > sizeof(http->buffer)) | |
1423 | bytes = sizeof(http->buffer); | |
1424 | else | |
1425 | bytes = http->data_remaining; | |
1426 | ||
1427 | #ifdef HAVE_SSL | |
1428 | if (http->tls) | |
1429 | bytes = http_read_ssl(http, http->buffer, bytes); | |
1430 | else | |
1431 | #endif /* HAVE_SSL */ | |
1432 | { | |
e07d4801 | 1433 | DEBUG_printf(("2httpRead2: reading %d bytes from socket into buffer...", |
a603edef | 1434 | (int)bytes)); |
ef416fc2 | 1435 | |
1436 | bytes = recv(http->fd, http->buffer, bytes, 0); | |
1437 | ||
e07d4801 | 1438 | DEBUG_printf(("2httpRead2: read %d bytes from socket into buffer...", |
a603edef | 1439 | (int)bytes)); |
ef416fc2 | 1440 | } |
1441 | ||
1442 | if (bytes > 0) | |
1443 | http->used = bytes; | |
1444 | else if (bytes < 0) | |
1445 | { | |
1446 | #ifdef WIN32 | |
1447 | http->error = WSAGetLastError(); | |
1448 | return (-1); | |
1449 | #else | |
e07d4801 | 1450 | if (errno != EINTR && errno != EAGAIN) |
ef416fc2 | 1451 | { |
1452 | http->error = errno; | |
1453 | return (-1); | |
1454 | } | |
1455 | #endif /* WIN32 */ | |
1456 | } | |
1457 | else | |
1458 | { | |
1459 | http->error = EPIPE; | |
1460 | return (0); | |
1461 | } | |
1462 | } | |
1463 | ||
1464 | if (http->used > 0) | |
1465 | { | |
b86bc4cf | 1466 | if (length > (size_t)http->used) |
1467 | length = (size_t)http->used; | |
ef416fc2 | 1468 | |
b86bc4cf | 1469 | bytes = (ssize_t)length; |
ef416fc2 | 1470 | |
e07d4801 | 1471 | DEBUG_printf(("2httpRead2: grabbing %d bytes from input buffer...", |
a603edef | 1472 | (int)bytes)); |
ef416fc2 | 1473 | |
1474 | memcpy(buffer, http->buffer, length); | |
b86bc4cf | 1475 | http->used -= (int)length; |
ef416fc2 | 1476 | |
1477 | if (http->used > 0) | |
1478 | memmove(http->buffer, http->buffer + length, http->used); | |
1479 | } | |
1480 | #ifdef HAVE_SSL | |
1481 | else if (http->tls) | |
1482 | { | |
ed486911 | 1483 | if (!http->blocking && !httpWait(http, 10000)) |
ef416fc2 | 1484 | return (0); |
1485 | ||
b86bc4cf | 1486 | bytes = (ssize_t)http_read_ssl(http, buffer, (int)length); |
ef416fc2 | 1487 | } |
1488 | #endif /* HAVE_SSL */ | |
1489 | else | |
1490 | { | |
ed486911 | 1491 | if (!http->blocking && !httpWait(http, 10000)) |
ef416fc2 | 1492 | return (0); |
1493 | ||
e07d4801 | 1494 | DEBUG_printf(("2httpRead2: reading " CUPS_LLFMT " bytes from socket...", |
a603edef | 1495 | CUPS_LLCAST length)); |
ef416fc2 | 1496 | |
b86bc4cf | 1497 | #ifdef WIN32 |
1498 | bytes = (ssize_t)recv(http->fd, buffer, (int)length, 0); | |
1499 | #else | |
ef416fc2 | 1500 | while ((bytes = recv(http->fd, buffer, length, 0)) < 0) |
d1c13e16 | 1501 | if (errno != EINTR && errno != EAGAIN) |
ef416fc2 | 1502 | break; |
b86bc4cf | 1503 | #endif /* WIN32 */ |
ef416fc2 | 1504 | |
e07d4801 | 1505 | DEBUG_printf(("2httpRead2: read " CUPS_LLFMT " bytes from socket...", |
a603edef | 1506 | CUPS_LLCAST bytes)); |
ef416fc2 | 1507 | } |
1508 | ||
1509 | if (bytes > 0) | |
1510 | { | |
1511 | http->data_remaining -= bytes; | |
1512 | ||
1513 | if (http->data_remaining <= INT_MAX) | |
1514 | http->_data_remaining = (int)http->data_remaining; | |
1515 | else | |
1516 | http->_data_remaining = INT_MAX; | |
1517 | } | |
1518 | else if (bytes < 0) | |
1519 | { | |
1520 | #ifdef WIN32 | |
1521 | http->error = WSAGetLastError(); | |
1522 | #else | |
d1c13e16 | 1523 | if (errno == EINTR || errno == EAGAIN) |
ef416fc2 | 1524 | bytes = 0; |
1525 | else | |
1526 | http->error = errno; | |
1527 | #endif /* WIN32 */ | |
1528 | } | |
1529 | else | |
1530 | { | |
1531 | http->error = EPIPE; | |
1532 | return (0); | |
1533 | } | |
1534 | ||
1535 | if (http->data_remaining == 0) | |
1536 | { | |
1537 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
1538 | httpGets(len, sizeof(len), http); | |
1539 | ||
1540 | if (http->data_encoding != HTTP_ENCODE_CHUNKED) | |
1541 | { | |
1542 | if (http->state == HTTP_POST_RECV) | |
1543 | http->state ++; | |
1544 | else | |
1545 | http->state = HTTP_WAITING; | |
1546 | } | |
1547 | } | |
1548 | ||
1549 | #ifdef DEBUG | |
ae71f5de | 1550 | http_debug_hex("httpRead2", buffer, (int)bytes); |
ef416fc2 | 1551 | #endif /* DEBUG */ |
1552 | ||
1553 | return (bytes); | |
1554 | } | |
1555 | ||
1556 | ||
1557 | #if defined(HAVE_SSL) && defined(HAVE_CDSASSL) | |
1558 | /* | |
411affcf | 1559 | * '_httpReadCDSA()' - Read function for the CDSA library. |
ef416fc2 | 1560 | */ |
1561 | ||
1562 | OSStatus /* O - -1 on error, 0 on success */ | |
1563 | _httpReadCDSA( | |
1564 | SSLConnectionRef connection, /* I - SSL/TLS connection */ | |
1565 | void *data, /* I - Data buffer */ | |
1566 | size_t *dataLength) /* IO - Number of bytes */ | |
1567 | { | |
411affcf | 1568 | OSStatus result; /* Return value */ |
1569 | ssize_t bytes; /* Number of bytes read */ | |
1570 | http_t *http; /* HTTP connection */ | |
1571 | ||
1572 | ||
1573 | http = (http_t *)connection; | |
e53920b9 | 1574 | |
411affcf | 1575 | if (!http->blocking) |
1576 | { | |
1577 | /* | |
1578 | * Make sure we have data before we read... | |
1579 | */ | |
e53920b9 | 1580 | |
38e73f87 | 1581 | if (!_httpWait(http, 10000, 0)) |
411affcf | 1582 | { |
1583 | http->error = ETIMEDOUT; | |
1584 | return (-1); | |
1585 | } | |
1586 | } | |
ef416fc2 | 1587 | |
b423cd4c | 1588 | do |
411affcf | 1589 | { |
1590 | bytes = recv(http->fd, data, *dataLength, 0); | |
1591 | } | |
e07d4801 | 1592 | while (bytes == -1 && (errno == EINTR || errno == EAGAIN)); |
fa73b229 | 1593 | |
b423cd4c | 1594 | if (bytes == *dataLength) |
411affcf | 1595 | { |
b423cd4c | 1596 | result = 0; |
411affcf | 1597 | } |
b423cd4c | 1598 | else if (bytes > 0) |
1599 | { | |
1600 | *dataLength = bytes; | |
1601 | result = errSSLWouldBlock; | |
1602 | } | |
1603 | else | |
1604 | { | |
1605 | *dataLength = 0; | |
fa73b229 | 1606 | |
1607 | if (bytes == 0) | |
ed486911 | 1608 | result = errSSLClosedGraceful; |
b423cd4c | 1609 | else if (errno == EAGAIN) |
1610 | result = errSSLWouldBlock; | |
b423cd4c | 1611 | else |
ed486911 | 1612 | result = errSSLClosedAbort; |
ef416fc2 | 1613 | } |
b423cd4c | 1614 | |
411affcf | 1615 | return (result); |
ef416fc2 | 1616 | } |
1617 | #endif /* HAVE_SSL && HAVE_CDSASSL */ | |
1618 | ||
1619 | ||
411affcf | 1620 | #if defined(HAVE_SSL) && defined(HAVE_GNUTLS) |
1621 | /* | |
1622 | * '_httpReadGNUTLS()' - Read function for the GNU TLS library. | |
1623 | */ | |
1624 | ||
1625 | ssize_t /* O - Number of bytes read or -1 on error */ | |
1626 | _httpReadGNUTLS( | |
568fa3fa | 1627 | gnutls_transport_ptr ptr, /* I - Connection to server */ |
411affcf | 1628 | void *data, /* I - Buffer */ |
1629 | size_t length) /* I - Number of bytes to read */ | |
1630 | { | |
1631 | http_t *http; /* HTTP connection */ | |
1632 | ||
1633 | ||
1634 | http = (http_t *)ptr; | |
1635 | ||
1636 | if (!http->blocking) | |
1637 | { | |
1638 | /* | |
1639 | * Make sure we have data before we read... | |
1640 | */ | |
1641 | ||
38e73f87 | 1642 | if (!_httpWait(http, 10000, 0)) |
411affcf | 1643 | { |
1644 | http->error = ETIMEDOUT; | |
1645 | return (-1); | |
1646 | } | |
1647 | } | |
1648 | ||
1649 | return (recv(http->fd, data, length, 0)); | |
1650 | } | |
1651 | #endif /* HAVE_SSL && HAVE_GNUTLS */ | |
1652 | ||
1653 | ||
ef416fc2 | 1654 | /* |
ecdc0628 | 1655 | * 'httpReconnect()' - Reconnect to a HTTP server. |
ef416fc2 | 1656 | */ |
1657 | ||
1658 | int /* O - 0 on success, non-zero on failure */ | |
568fa3fa | 1659 | httpReconnect(http_t *http) /* I - Connection to server */ |
ef416fc2 | 1660 | { |
1661 | http_addrlist_t *addr; /* Connected address */ | |
1ff0402e MS |
1662 | #ifdef DEBUG |
1663 | http_addrlist_t *current; /* Current address */ | |
1664 | char temp[256]; /* Temporary address string */ | |
1665 | #endif /* DEBUG */ | |
ef416fc2 | 1666 | |
1667 | ||
e07d4801 | 1668 | DEBUG_printf(("httpReconnect(http=%p)", http)); |
ef416fc2 | 1669 | |
1670 | if (!http) | |
1671 | return (-1); | |
1672 | ||
1673 | #ifdef HAVE_SSL | |
1674 | if (http->tls) | |
1ff0402e | 1675 | { |
e07d4801 | 1676 | DEBUG_puts("2httpReconnect: Shutting down SSL/TLS..."); |
ef416fc2 | 1677 | http_shutdown_ssl(http); |
1ff0402e | 1678 | } |
ef416fc2 | 1679 | #endif /* HAVE_SSL */ |
1680 | ||
1681 | /* | |
1682 | * Close any previously open socket... | |
1683 | */ | |
1684 | ||
1685 | if (http->fd >= 0) | |
bd7854cb | 1686 | { |
e07d4801 | 1687 | DEBUG_printf(("2httpReconnect: Closing socket %d...", http->fd)); |
1ff0402e | 1688 | |
ef416fc2 | 1689 | #ifdef WIN32 |
1690 | closesocket(http->fd); | |
1691 | #else | |
1692 | close(http->fd); | |
1693 | #endif /* WIN32 */ | |
1694 | ||
bd7854cb | 1695 | http->fd = -1; |
1696 | } | |
1697 | ||
ef416fc2 | 1698 | /* |
1699 | * Connect to the server... | |
1700 | */ | |
1701 | ||
1ff0402e MS |
1702 | #ifdef DEBUG |
1703 | for (current = http->addrlist; current; current = current->next) | |
e07d4801 | 1704 | DEBUG_printf(("2httpReconnect: Address %s:%d", |
1ff0402e MS |
1705 | httpAddrString(&(current->addr), temp, sizeof(temp)), |
1706 | _httpAddrPort(&(current->addr)))); | |
1707 | #endif /* DEBUG */ | |
1708 | ||
ef416fc2 | 1709 | if ((addr = httpAddrConnect(http->addrlist, &(http->fd))) == NULL) |
1710 | { | |
1711 | /* | |
1712 | * Unable to connect... | |
1713 | */ | |
1714 | ||
1715 | #ifdef WIN32 | |
1716 | http->error = WSAGetLastError(); | |
1717 | #else | |
1718 | http->error = errno; | |
1719 | #endif /* WIN32 */ | |
1720 | http->status = HTTP_ERROR; | |
1721 | ||
e07d4801 | 1722 | DEBUG_printf(("1httpReconnect: httpAddrConnect failed: %s", |
1ff0402e MS |
1723 | strerror(http->error))); |
1724 | ||
ef416fc2 | 1725 | return (-1); |
1726 | } | |
1727 | ||
e07d4801 | 1728 | DEBUG_printf(("2httpReconnect: New socket=%d", http->fd)); |
1ff0402e | 1729 | |
ef416fc2 | 1730 | http->hostaddr = &(addr->addr); |
1731 | http->error = 0; | |
1732 | http->status = HTTP_CONTINUE; | |
1733 | ||
1734 | #ifdef HAVE_SSL | |
1735 | if (http->encryption == HTTP_ENCRYPT_ALWAYS) | |
1736 | { | |
1737 | /* | |
1738 | * Always do encryption via SSL. | |
1739 | */ | |
1740 | ||
1741 | if (http_setup_ssl(http) != 0) | |
1742 | { | |
f7deaa1a | 1743 | # ifdef WIN32 |
ef416fc2 | 1744 | closesocket(http->fd); |
f7deaa1a | 1745 | # else |
ef416fc2 | 1746 | close(http->fd); |
f7deaa1a | 1747 | # endif /* WIN32 */ |
ef416fc2 | 1748 | |
1749 | return (-1); | |
1750 | } | |
1751 | } | |
1752 | else if (http->encryption == HTTP_ENCRYPT_REQUIRED) | |
1753 | return (http_upgrade(http)); | |
1754 | #endif /* HAVE_SSL */ | |
1755 | ||
e07d4801 | 1756 | DEBUG_printf(("1httpReconnect: Connected to %s:%d...", |
1ff0402e MS |
1757 | httpAddrString(http->hostaddr, temp, sizeof(temp)), |
1758 | _httpAddrPort(http->hostaddr))); | |
1759 | ||
ef416fc2 | 1760 | return (0); |
1761 | } | |
1762 | ||
1763 | ||
355e94dc MS |
1764 | /* |
1765 | * 'httpSetAuthString()' - Set the current authorization string. | |
1766 | * | |
1767 | * This function just stores a copy of the current authorization string in | |
1768 | * the HTTP connection object. You must still call httpSetField() to set | |
1769 | * HTTP_FIELD_AUTHORIZATION prior to issuing a HTTP request using httpGet(), | |
1770 | * httpHead(), httpOptions(), httpPost, or httpPut(). | |
1771 | * | |
426c6a59 | 1772 | * @since CUPS 1.3/Mac OS X 10.5@ |
355e94dc MS |
1773 | */ |
1774 | ||
1775 | void | |
568fa3fa | 1776 | httpSetAuthString(http_t *http, /* I - Connection to server */ |
355e94dc MS |
1777 | const char *scheme, /* I - Auth scheme (NULL to clear it) */ |
1778 | const char *data) /* I - Auth data (NULL for none) */ | |
1779 | { | |
1780 | /* | |
1781 | * Range check input... | |
1782 | */ | |
1783 | ||
1784 | if (!http) | |
1785 | return; | |
1786 | ||
1787 | if (http->authstring && http->authstring != http->_authstring) | |
1788 | free(http->authstring); | |
1789 | ||
1790 | http->authstring = http->_authstring; | |
1791 | ||
1792 | if (scheme) | |
1793 | { | |
1794 | /* | |
1795 | * Set the current authorization string... | |
1796 | */ | |
1797 | ||
1798 | int len = (int)strlen(scheme) + (data ? (int)strlen(data) + 1 : 0) + 1; | |
91c84a35 | 1799 | char *temp; |
355e94dc MS |
1800 | |
1801 | if (len > (int)sizeof(http->_authstring)) | |
91c84a35 MS |
1802 | { |
1803 | if ((temp = malloc(len)) == NULL) | |
1804 | len = sizeof(http->_authstring); | |
1805 | else | |
1806 | http->authstring = temp; | |
1807 | } | |
355e94dc MS |
1808 | |
1809 | if (data) | |
1810 | snprintf(http->authstring, len, "%s %s", scheme, data); | |
1811 | else | |
1812 | strlcpy(http->authstring, scheme, len); | |
1813 | } | |
1814 | else | |
1815 | { | |
1816 | /* | |
1817 | * Clear the current authorization string... | |
1818 | */ | |
1819 | ||
1820 | http->_authstring[0] = '\0'; | |
1821 | } | |
1822 | } | |
1823 | ||
1824 | ||
ef416fc2 | 1825 | /* |
1826 | * 'httpSetCookie()' - Set the cookie value(s)... | |
1827 | * | |
426c6a59 | 1828 | * @since CUPS 1.1.19/Mac OS X 10.3@ |
ef416fc2 | 1829 | */ |
1830 | ||
1831 | void | |
1832 | httpSetCookie(http_t *http, /* I - Connection */ | |
1833 | const char *cookie) /* I - Cookie string */ | |
1834 | { | |
1835 | if (!http) | |
1836 | return; | |
1837 | ||
1838 | if (http->cookie) | |
1839 | free(http->cookie); | |
1840 | ||
1841 | if (cookie) | |
1842 | http->cookie = strdup(cookie); | |
1843 | else | |
1844 | http->cookie = NULL; | |
1845 | } | |
1846 | ||
1847 | ||
b423cd4c | 1848 | /* |
1849 | * 'httpSetExpect()' - Set the Expect: header in a request. | |
1850 | * | |
1851 | * Currently only HTTP_CONTINUE is supported for the "expect" argument. | |
1852 | * | |
426c6a59 | 1853 | * @since CUPS 1.2/Mac OS X 10.5@ |
b423cd4c | 1854 | */ |
1855 | ||
1856 | void | |
568fa3fa | 1857 | httpSetExpect(http_t *http, /* I - Connection to server */ |
b423cd4c | 1858 | http_status_t expect) /* I - HTTP status to expect (HTTP_CONTINUE) */ |
1859 | { | |
1860 | if (http) | |
1861 | http->expect = expect; | |
1862 | } | |
1863 | ||
1864 | ||
ef416fc2 | 1865 | /* |
1866 | * 'httpSetField()' - Set the value of an HTTP header. | |
1867 | */ | |
1868 | ||
1869 | void | |
568fa3fa | 1870 | httpSetField(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1871 | http_field_t field, /* I - Field index */ |
1872 | const char *value) /* I - Value */ | |
1873 | { | |
1874 | if (http == NULL || | |
1875 | field < HTTP_FIELD_ACCEPT_LANGUAGE || | |
1876 | field > HTTP_FIELD_WWW_AUTHENTICATE || | |
1877 | value == NULL) | |
1878 | return; | |
1879 | ||
1880 | strlcpy(http->fields[field], value, HTTP_MAX_VALUE); | |
f7deaa1a | 1881 | |
f7deaa1a | 1882 | if (field == HTTP_FIELD_AUTHORIZATION) |
1883 | { | |
e07d4801 MS |
1884 | /* |
1885 | * Special case for Authorization: as its contents can be | |
1886 | * longer than HTTP_MAX_VALUE | |
1887 | */ | |
1888 | ||
f7deaa1a | 1889 | if (http->field_authorization) |
1890 | free(http->field_authorization); | |
1891 | ||
1892 | http->field_authorization = strdup(value); | |
1893 | } | |
e07d4801 MS |
1894 | else if (field == HTTP_FIELD_HOST) |
1895 | { | |
1896 | /* | |
f11a948a MS |
1897 | * Special-case for Host: as we don't want a trailing "." on the hostname and |
1898 | * need to bracket IPv6 numeric addresses. | |
e07d4801 MS |
1899 | */ |
1900 | ||
178cb736 MS |
1901 | char *ptr = strchr(value, ':'); |
1902 | ||
1903 | if (value[0] != '[' && ptr && strchr(ptr + 1, ':')) | |
f11a948a MS |
1904 | { |
1905 | /* | |
1906 | * Bracket IPv6 numeric addresses... | |
1907 | * | |
1908 | * This is slightly inefficient (basically copying twice), but is an edge | |
1909 | * case and not worth optimizing... | |
1910 | */ | |
e07d4801 | 1911 | |
f11a948a MS |
1912 | snprintf(http->fields[HTTP_FIELD_HOST], |
1913 | sizeof(http->fields[HTTP_FIELD_HOST]), "[%s]", value); | |
1914 | } | |
1915 | else | |
e07d4801 | 1916 | { |
f11a948a MS |
1917 | /* |
1918 | * Check for a trailing dot on the hostname... | |
1919 | */ | |
1920 | ||
178cb736 | 1921 | ptr = http->fields[HTTP_FIELD_HOST]; |
f11a948a MS |
1922 | |
1923 | if (*ptr) | |
1924 | { | |
1925 | ptr += strlen(ptr) - 1; | |
e07d4801 | 1926 | |
f11a948a MS |
1927 | if (*ptr == '.') |
1928 | *ptr = '\0'; | |
1929 | } | |
e07d4801 MS |
1930 | } |
1931 | } | |
ef416fc2 | 1932 | } |
1933 | ||
1934 | ||
1935 | /* | |
1936 | * 'httpSetLength()' - Set the content-length and content-encoding. | |
1937 | * | |
426c6a59 | 1938 | * @since CUPS 1.2/Mac OS X 10.5@ |
ef416fc2 | 1939 | */ |
1940 | ||
1941 | void | |
568fa3fa | 1942 | httpSetLength(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1943 | size_t length) /* I - Length (0 for chunked) */ |
1944 | { | |
1945 | if (!http) | |
1946 | return; | |
1947 | ||
1948 | if (!length) | |
1949 | { | |
1950 | strcpy(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked"); | |
1951 | http->fields[HTTP_FIELD_CONTENT_LENGTH][0] = '\0'; | |
1952 | } | |
1953 | else | |
1954 | { | |
1955 | http->fields[HTTP_FIELD_TRANSFER_ENCODING][0] = '\0'; | |
1956 | snprintf(http->fields[HTTP_FIELD_CONTENT_LENGTH], HTTP_MAX_VALUE, | |
1957 | CUPS_LLFMT, CUPS_LLCAST length); | |
1958 | } | |
1959 | } | |
1960 | ||
1961 | ||
1962 | /* | |
1963 | * 'httpTrace()' - Send an TRACE request to the server. | |
1964 | */ | |
1965 | ||
1966 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 1967 | httpTrace(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1968 | const char *uri) /* I - URI for trace */ |
1969 | { | |
1970 | return (http_send(http, HTTP_TRACE, uri)); | |
1971 | } | |
1972 | ||
1973 | ||
1974 | /* | |
1975 | * 'httpUpdate()' - Update the current HTTP state for incoming data. | |
1976 | */ | |
1977 | ||
1978 | http_status_t /* O - HTTP status */ | |
568fa3fa | 1979 | httpUpdate(http_t *http) /* I - Connection to server */ |
ef416fc2 | 1980 | { |
1981 | char line[32768], /* Line from connection... */ | |
1982 | *value; /* Pointer to value on line */ | |
1983 | http_field_t field; /* Field index */ | |
1984 | int major, minor, /* HTTP version numbers */ | |
1985 | status; /* Request status */ | |
1986 | ||
1987 | ||
f11a948a MS |
1988 | DEBUG_printf(("httpUpdate(http=%p), state=%s", http, |
1989 | http_states[http->state])); | |
ef416fc2 | 1990 | |
1991 | /* | |
1992 | * Flush pending data, if any... | |
1993 | */ | |
1994 | ||
1995 | if (http->wused) | |
1996 | { | |
e07d4801 | 1997 | DEBUG_puts("2httpUpdate: flushing buffer..."); |
ef416fc2 | 1998 | |
1999 | if (httpFlushWrite(http) < 0) | |
2000 | return (HTTP_ERROR); | |
2001 | } | |
2002 | ||
2003 | /* | |
2004 | * If we haven't issued any commands, then there is nothing to "update"... | |
2005 | */ | |
2006 | ||
2007 | if (http->state == HTTP_WAITING) | |
2008 | return (HTTP_CONTINUE); | |
2009 | ||
2010 | /* | |
2011 | * Grab all of the lines we can from the connection... | |
2012 | */ | |
2013 | ||
2014 | while (httpGets(line, sizeof(line), http) != NULL) | |
2015 | { | |
e07d4801 | 2016 | DEBUG_printf(("2httpUpdate: Got \"%s\"", line)); |
ef416fc2 | 2017 | |
2018 | if (line[0] == '\0') | |
2019 | { | |
2020 | /* | |
2021 | * Blank line means the start of the data section (if any). Return | |
2022 | * the result code, too... | |
2023 | * | |
2024 | * If we get status 100 (HTTP_CONTINUE), then we *don't* change states. | |
2025 | * Instead, we just return HTTP_CONTINUE to the caller and keep on | |
2026 | * tryin'... | |
2027 | */ | |
2028 | ||
2029 | if (http->status == HTTP_CONTINUE) | |
2030 | return (http->status); | |
2031 | ||
2032 | if (http->status < HTTP_BAD_REQUEST) | |
2033 | http->digest_tries = 0; | |
2034 | ||
2035 | #ifdef HAVE_SSL | |
2036 | if (http->status == HTTP_SWITCHING_PROTOCOLS && !http->tls) | |
2037 | { | |
2038 | if (http_setup_ssl(http) != 0) | |
2039 | { | |
2040 | # ifdef WIN32 | |
2041 | closesocket(http->fd); | |
2042 | # else | |
2043 | close(http->fd); | |
2044 | # endif /* WIN32 */ | |
2045 | ||
2046 | return (HTTP_ERROR); | |
2047 | } | |
2048 | ||
2049 | return (HTTP_CONTINUE); | |
2050 | } | |
2051 | #endif /* HAVE_SSL */ | |
2052 | ||
2053 | httpGetLength2(http); | |
2054 | ||
2055 | switch (http->state) | |
2056 | { | |
2057 | case HTTP_GET : | |
2058 | case HTTP_POST : | |
2059 | case HTTP_POST_RECV : | |
2060 | case HTTP_PUT : | |
2061 | http->state ++; | |
2062 | case HTTP_POST_SEND : | |
e1d6a774 | 2063 | case HTTP_HEAD : |
ef416fc2 | 2064 | break; |
2065 | ||
2066 | default : | |
2067 | http->state = HTTP_WAITING; | |
2068 | break; | |
2069 | } | |
2070 | ||
2071 | return (http->status); | |
2072 | } | |
e07d4801 | 2073 | else if (!strncmp(line, "HTTP/", 5)) |
ef416fc2 | 2074 | { |
2075 | /* | |
2076 | * Got the beginning of a response... | |
2077 | */ | |
2078 | ||
2079 | if (sscanf(line, "HTTP/%d.%d%d", &major, &minor, &status) != 3) | |
2080 | return (HTTP_ERROR); | |
2081 | ||
2082 | http->version = (http_version_t)(major * 100 + minor); | |
2083 | http->status = (http_status_t)status; | |
2084 | } | |
2085 | else if ((value = strchr(line, ':')) != NULL) | |
2086 | { | |
2087 | /* | |
2088 | * Got a value... | |
2089 | */ | |
2090 | ||
2091 | *value++ = '\0'; | |
2092 | while (isspace(*value & 255)) | |
2093 | value ++; | |
2094 | ||
2095 | /* | |
2096 | * Be tolerants of servers that send unknown attribute fields... | |
2097 | */ | |
2098 | ||
2099 | if (!strcasecmp(line, "expect")) | |
2100 | { | |
2101 | /* | |
2102 | * "Expect: 100-continue" or similar... | |
2103 | */ | |
2104 | ||
2105 | http->expect = (http_status_t)atoi(value); | |
2106 | } | |
2107 | else if (!strcasecmp(line, "cookie")) | |
2108 | { | |
2109 | /* | |
2110 | * "Cookie: name=value[; name=value ...]" - replaces previous cookies... | |
2111 | */ | |
2112 | ||
2113 | httpSetCookie(http, value); | |
2114 | } | |
2115 | else if ((field = http_field(line)) == HTTP_FIELD_UNKNOWN) | |
2116 | { | |
e07d4801 | 2117 | DEBUG_printf(("1httpUpdate: unknown field %s seen!", line)); |
ef416fc2 | 2118 | continue; |
2119 | } | |
2120 | else | |
2121 | httpSetField(http, field, value); | |
2122 | } | |
2123 | else | |
2124 | { | |
e07d4801 | 2125 | DEBUG_printf(("1httpUpdate: Bad response line \"%s\"!", line)); |
ef416fc2 | 2126 | http->status = HTTP_ERROR; |
2127 | return (HTTP_ERROR); | |
2128 | } | |
2129 | } | |
2130 | ||
2131 | /* | |
2132 | * See if there was an error... | |
2133 | */ | |
2134 | ||
2135 | if (http->error == EPIPE && http->status > HTTP_CONTINUE) | |
e07d4801 MS |
2136 | { |
2137 | DEBUG_printf(("1httpUpdate: Returning status %d...", http->status)); | |
ef416fc2 | 2138 | return (http->status); |
e07d4801 | 2139 | } |
ef416fc2 | 2140 | |
2141 | if (http->error) | |
2142 | { | |
e07d4801 | 2143 | DEBUG_printf(("1httpUpdate: socket error %d - %s", http->error, |
ef416fc2 | 2144 | strerror(http->error))); |
2145 | http->status = HTTP_ERROR; | |
2146 | return (HTTP_ERROR); | |
2147 | } | |
2148 | ||
2149 | /* | |
2150 | * If we haven't already returned, then there is nothing new... | |
2151 | */ | |
2152 | ||
2153 | return (HTTP_CONTINUE); | |
2154 | } | |
2155 | ||
2156 | ||
38e73f87 MS |
2157 | /* |
2158 | * '_httpWait()' - Wait for data available on a connection (no flush). | |
2159 | */ | |
2160 | ||
2161 | int /* O - 1 if data is available, 0 otherwise */ | |
2162 | _httpWait(http_t *http, /* I - Connection to server */ | |
2163 | int msec, /* I - Milliseconds to wait */ | |
2164 | int usessl) /* I - Use SSL context? */ | |
2165 | { | |
2166 | #ifdef HAVE_POLL | |
2167 | struct pollfd pfd; /* Polled file descriptor */ | |
2168 | #else | |
2169 | fd_set input_set; /* select() input set */ | |
2170 | struct timeval timeout; /* Timeout */ | |
2171 | #endif /* HAVE_POLL */ | |
2172 | int nfds; /* Result from select()/poll() */ | |
2173 | ||
2174 | ||
e07d4801 | 2175 | DEBUG_printf(("4_httpWait(http=%p, msec=%d, usessl=%d)", http, msec, usessl)); |
38e73f87 MS |
2176 | |
2177 | if (http->fd < 0) | |
f8b3a85b MS |
2178 | { |
2179 | DEBUG_printf(("5_httpWait: Returning 0 since fd=%d", http->fd)); | |
38e73f87 | 2180 | return (0); |
f8b3a85b | 2181 | } |
38e73f87 MS |
2182 | |
2183 | /* | |
2184 | * Check the SSL/TLS buffers for data first... | |
2185 | */ | |
2186 | ||
2187 | #ifdef HAVE_SSL | |
2188 | if (http->tls && usessl) | |
2189 | { | |
2190 | # ifdef HAVE_LIBSSL | |
2191 | if (SSL_pending((SSL *)(http->tls))) | |
f8b3a85b MS |
2192 | { |
2193 | DEBUG_puts("5_httpWait: Return 1 since there is pending SSL data."); | |
38e73f87 | 2194 | return (1); |
f8b3a85b MS |
2195 | } |
2196 | ||
38e73f87 MS |
2197 | # elif defined(HAVE_GNUTLS) |
2198 | if (gnutls_record_check_pending(((http_tls_t *)(http->tls))->session)) | |
f8b3a85b MS |
2199 | { |
2200 | DEBUG_puts("5_httpWait: Return 1 since there is pending SSL data."); | |
38e73f87 | 2201 | return (1); |
f8b3a85b MS |
2202 | } |
2203 | ||
38e73f87 MS |
2204 | # elif defined(HAVE_CDSASSL) |
2205 | size_t bytes; /* Bytes that are available */ | |
2206 | ||
2207 | if (!SSLGetBufferedReadSize(((http_tls_t *)(http->tls))->session, &bytes) && | |
2208 | bytes > 0) | |
f8b3a85b MS |
2209 | { |
2210 | DEBUG_puts("5_httpWait: Return 1 since there is pending SSL data."); | |
38e73f87 | 2211 | return (1); |
f8b3a85b | 2212 | } |
38e73f87 MS |
2213 | # endif /* HAVE_LIBSSL */ |
2214 | } | |
2215 | #endif /* HAVE_SSL */ | |
2216 | ||
2217 | /* | |
2218 | * Then try doing a select() or poll() to poll the socket... | |
2219 | */ | |
2220 | ||
2221 | #ifdef HAVE_POLL | |
2222 | pfd.fd = http->fd; | |
2223 | pfd.events = POLLIN; | |
2224 | ||
e07d4801 MS |
2225 | while ((nfds = poll(&pfd, 1, msec)) < 0 && |
2226 | (errno == EINTR || errno == EAGAIN)); | |
38e73f87 MS |
2227 | |
2228 | #else | |
2229 | do | |
2230 | { | |
2231 | FD_ZERO(&input_set); | |
2232 | FD_SET(http->fd, &input_set); | |
2233 | ||
e07d4801 | 2234 | DEBUG_printf(("6_httpWait: msec=%d, http->fd=%d", msec, http->fd)); |
38e73f87 MS |
2235 | |
2236 | if (msec >= 0) | |
2237 | { | |
2238 | timeout.tv_sec = msec / 1000; | |
2239 | timeout.tv_usec = (msec % 1000) * 1000; | |
2240 | ||
2241 | nfds = select(http->fd + 1, &input_set, NULL, NULL, &timeout); | |
2242 | } | |
2243 | else | |
2244 | nfds = select(http->fd + 1, &input_set, NULL, NULL, NULL); | |
2245 | ||
e07d4801 | 2246 | DEBUG_printf(("6_httpWait: select() returned %d...", nfds)); |
38e73f87 MS |
2247 | } |
2248 | # ifdef WIN32 | |
2249 | while (nfds < 0 && WSAGetLastError() == WSAEINTR); | |
2250 | # else | |
e07d4801 | 2251 | while (nfds < 0 && (errno == EINTR || errno == EAGAIN)); |
38e73f87 MS |
2252 | # endif /* WIN32 */ |
2253 | #endif /* HAVE_POLL */ | |
2254 | ||
f8b3a85b MS |
2255 | DEBUG_printf(("5_httpWait: returning with nfds=%d, errno=%d...", nfds, |
2256 | errno)); | |
38e73f87 MS |
2257 | |
2258 | return (nfds > 0); | |
2259 | } | |
2260 | ||
2261 | ||
ef416fc2 | 2262 | /* |
2263 | * 'httpWait()' - Wait for data available on a connection. | |
2264 | * | |
426c6a59 | 2265 | * @since CUPS 1.1.19/Mac OS X 10.3@ |
ef416fc2 | 2266 | */ |
2267 | ||
2268 | int /* O - 1 if data is available, 0 otherwise */ | |
568fa3fa | 2269 | httpWait(http_t *http, /* I - Connection to server */ |
ef416fc2 | 2270 | int msec) /* I - Milliseconds to wait */ |
2271 | { | |
2272 | /* | |
2273 | * First see if there is data in the buffer... | |
2274 | */ | |
2275 | ||
2276 | if (http == NULL) | |
2277 | return (0); | |
2278 | ||
2279 | if (http->used) | |
2280 | return (1); | |
2281 | ||
8ca02f3c | 2282 | /* |
2283 | * Flush pending data, if any... | |
2284 | */ | |
2285 | ||
2286 | if (http->wused) | |
2287 | { | |
2288 | if (httpFlushWrite(http) < 0) | |
2289 | return (0); | |
2290 | } | |
2291 | ||
ef416fc2 | 2292 | /* |
2293 | * If not, check the SSL/TLS buffers and do a select() on the connection... | |
2294 | */ | |
2295 | ||
38e73f87 | 2296 | return (_httpWait(http, msec, 1)); |
ef416fc2 | 2297 | } |
2298 | ||
2299 | ||
2300 | /* | |
2301 | * 'httpWrite()' - Write data to a HTTP connection. | |
a4d04587 | 2302 | * |
2303 | * This function is deprecated. Use the httpWrite2() function which can | |
2304 | * write more than 2GB of data. | |
2305 | * | |
2306 | * @deprecated@ | |
ef416fc2 | 2307 | */ |
ef55b745 | 2308 | |
ef416fc2 | 2309 | int /* O - Number of bytes written */ |
568fa3fa | 2310 | httpWrite(http_t *http, /* I - Connection to server */ |
ef416fc2 | 2311 | const char *buffer, /* I - Buffer for data */ |
2312 | int length) /* I - Number of bytes to write */ | |
2313 | { | |
a4d04587 | 2314 | return ((int)httpWrite2(http, buffer, length)); |
2315 | } | |
2316 | ||
2317 | ||
2318 | /* | |
2319 | * 'httpWrite2()' - Write data to a HTTP connection. | |
ecdc0628 | 2320 | * |
426c6a59 | 2321 | * @since CUPS 1.2/Mac OS X 10.5@ |
a4d04587 | 2322 | */ |
ef55b745 | 2323 | |
a4d04587 | 2324 | ssize_t /* O - Number of bytes written */ |
568fa3fa | 2325 | httpWrite2(http_t *http, /* I - Connection to server */ |
a4d04587 | 2326 | const char *buffer, /* I - Buffer for data */ |
2327 | size_t length) /* I - Number of bytes to write */ | |
2328 | { | |
2329 | ssize_t bytes; /* Bytes written */ | |
ef416fc2 | 2330 | |
2331 | ||
e07d4801 | 2332 | DEBUG_printf(("httpWrite2(http=%p, buffer=%p, length=" CUPS_LLFMT ")", http, |
a603edef | 2333 | buffer, CUPS_LLCAST length)); |
ef416fc2 | 2334 | |
2335 | /* | |
2336 | * Range check input... | |
2337 | */ | |
2338 | ||
2339 | if (http == NULL || buffer == NULL) | |
2340 | return (-1); | |
2341 | ||
2342 | /* | |
2343 | * Mark activity on the connection... | |
2344 | */ | |
2345 | ||
2346 | http->activity = time(NULL); | |
2347 | ||
2348 | /* | |
2349 | * Buffer small writes for better performance... | |
2350 | */ | |
2351 | ||
2352 | if (length > 0) | |
2353 | { | |
2354 | if (http->wused && (length + http->wused) > sizeof(http->wbuffer)) | |
2355 | { | |
e07d4801 MS |
2356 | DEBUG_printf(("2httpWrite2: Flushing buffer (wused=%d, length=" |
2357 | CUPS_LLFMT ")", http->wused, CUPS_LLCAST length)); | |
ef416fc2 | 2358 | |
2359 | httpFlushWrite(http); | |
2360 | } | |
2361 | ||
38e73f87 MS |
2362 | if ((length + http->wused) <= sizeof(http->wbuffer) && |
2363 | length < sizeof(http->wbuffer)) | |
ef416fc2 | 2364 | { |
2365 | /* | |
2366 | * Write to buffer... | |
2367 | */ | |
2368 | ||
e07d4801 | 2369 | DEBUG_printf(("2httpWrite2: Copying " CUPS_LLFMT " bytes to wbuffer...", |
a603edef | 2370 | CUPS_LLCAST length)); |
ef416fc2 | 2371 | |
2372 | memcpy(http->wbuffer + http->wused, buffer, length); | |
b86bc4cf | 2373 | http->wused += (int)length; |
2374 | bytes = (ssize_t)length; | |
ef416fc2 | 2375 | } |
2376 | else | |
2377 | { | |
2378 | /* | |
2379 | * Otherwise write the data directly... | |
2380 | */ | |
2381 | ||
e07d4801 | 2382 | DEBUG_printf(("2httpWrite2: Writing " CUPS_LLFMT " bytes to socket...", |
a603edef | 2383 | CUPS_LLCAST length)); |
ef416fc2 | 2384 | |
2385 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
b86bc4cf | 2386 | bytes = (ssize_t)http_write_chunk(http, buffer, (int)length); |
ef416fc2 | 2387 | else |
b86bc4cf | 2388 | bytes = (ssize_t)http_write(http, buffer, (int)length); |
ef416fc2 | 2389 | |
e07d4801 | 2390 | DEBUG_printf(("2httpWrite2: Wrote " CUPS_LLFMT " bytes...", |
ae71f5de | 2391 | CUPS_LLCAST bytes)); |
ef416fc2 | 2392 | } |
2393 | ||
2394 | if (http->data_encoding == HTTP_ENCODE_LENGTH) | |
2395 | http->data_remaining -= bytes; | |
2396 | } | |
2397 | else | |
2398 | bytes = 0; | |
2399 | ||
2400 | /* | |
2401 | * Handle end-of-request processing... | |
2402 | */ | |
2403 | ||
2404 | if ((http->data_encoding == HTTP_ENCODE_CHUNKED && length == 0) || | |
2405 | (http->data_encoding == HTTP_ENCODE_LENGTH && http->data_remaining == 0)) | |
2406 | { | |
2407 | /* | |
2408 | * Finished with the transfer; unless we are sending POST or PUT | |
2409 | * data, go idle... | |
2410 | */ | |
2411 | ||
e07d4801 | 2412 | DEBUG_puts("2httpWrite: changing states..."); |
ef416fc2 | 2413 | |
2414 | if (http->wused) | |
2415 | httpFlushWrite(http); | |
2416 | ||
2417 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
2418 | { | |
2419 | /* | |
2420 | * Send a 0-length chunk at the end of the request... | |
2421 | */ | |
2422 | ||
2423 | http_write(http, "0\r\n\r\n", 5); | |
2424 | ||
2425 | /* | |
2426 | * Reset the data state... | |
2427 | */ | |
2428 | ||
2429 | http->data_encoding = HTTP_ENCODE_LENGTH; | |
2430 | http->data_remaining = 0; | |
2431 | } | |
2432 | ||
2433 | if (http->state == HTTP_POST_RECV) | |
2434 | http->state ++; | |
2435 | else if (http->state == HTTP_PUT_RECV) | |
2436 | http->state = HTTP_STATUS; | |
2437 | else | |
2438 | http->state = HTTP_WAITING; | |
2439 | } | |
2440 | ||
2441 | return (bytes); | |
2442 | } | |
2443 | ||
2444 | ||
2445 | #if defined(HAVE_SSL) && defined(HAVE_CDSASSL) | |
2446 | /* | |
411affcf | 2447 | * '_httpWriteCDSA()' - Write function for the CDSA library. |
ef416fc2 | 2448 | */ |
2449 | ||
2450 | OSStatus /* O - -1 on error, 0 on success */ | |
2451 | _httpWriteCDSA( | |
2452 | SSLConnectionRef connection, /* I - SSL/TLS connection */ | |
2453 | const void *data, /* I - Data buffer */ | |
2454 | size_t *dataLength) /* IO - Number of bytes */ | |
2455 | { | |
411affcf | 2456 | OSStatus result; /* Return value */ |
2457 | ssize_t bytes; /* Number of bytes read */ | |
2458 | http_t *http; /* HTTP connection */ | |
e53920b9 | 2459 | |
2460 | ||
411affcf | 2461 | http = (http_t *)connection; |
ef416fc2 | 2462 | |
b423cd4c | 2463 | do |
411affcf | 2464 | { |
2465 | bytes = write(http->fd, data, *dataLength); | |
2466 | } | |
e07d4801 | 2467 | while (bytes == -1 && (errno == EINTR || errno == EAGAIN)); |
fa73b229 | 2468 | |
b423cd4c | 2469 | if (bytes == *dataLength) |
411affcf | 2470 | { |
b423cd4c | 2471 | result = 0; |
411affcf | 2472 | } |
b423cd4c | 2473 | else if (bytes >= 0) |
2474 | { | |
2475 | *dataLength = bytes; | |
2476 | result = errSSLWouldBlock; | |
2477 | } | |
2478 | else | |
2479 | { | |
2480 | *dataLength = 0; | |
ef55b745 | 2481 | |
fa73b229 | 2482 | if (errno == EAGAIN) |
b423cd4c | 2483 | result = errSSLWouldBlock; |
b423cd4c | 2484 | else |
ed486911 | 2485 | result = errSSLClosedAbort; |
ef416fc2 | 2486 | } |
b423cd4c | 2487 | |
411affcf | 2488 | return (result); |
ef416fc2 | 2489 | } |
2490 | #endif /* HAVE_SSL && HAVE_CDSASSL */ | |
2491 | ||
2492 | ||
411affcf | 2493 | #if defined(HAVE_SSL) && defined(HAVE_GNUTLS) |
2494 | /* | |
2495 | * '_httpWriteGNUTLS()' - Write function for the GNU TLS library. | |
2496 | */ | |
2497 | ||
2498 | ssize_t /* O - Number of bytes written or -1 on error */ | |
2499 | _httpWriteGNUTLS( | |
568fa3fa | 2500 | gnutls_transport_ptr ptr, /* I - Connection to server */ |
411affcf | 2501 | const void *data, /* I - Data buffer */ |
2502 | size_t length) /* I - Number of bytes to write */ | |
2503 | { | |
2504 | return (send(((http_t *)ptr)->fd, data, length, 0)); | |
2505 | } | |
2506 | #endif /* HAVE_SSL && HAVE_GNUTLS */ | |
2507 | ||
2508 | ||
2509 | #if defined(HAVE_SSL) && defined(HAVE_LIBSSL) | |
2510 | /* | |
2511 | * 'http_bio_ctrl()' - Control the HTTP connection. | |
2512 | */ | |
2513 | ||
2514 | static long /* O - Result/data */ | |
2515 | http_bio_ctrl(BIO *h, /* I - BIO data */ | |
2516 | int cmd, /* I - Control command */ | |
2517 | long arg1, /* I - First argument */ | |
2518 | void *arg2) /* I - Second argument */ | |
2519 | { | |
2520 | switch (cmd) | |
2521 | { | |
2522 | default : | |
2523 | return (0); | |
2524 | ||
2525 | case BIO_CTRL_RESET : | |
2526 | h->ptr = NULL; | |
2527 | return (0); | |
2528 | ||
2529 | case BIO_C_SET_FILE_PTR : | |
2530 | h->ptr = arg2; | |
2531 | h->init = 1; | |
2532 | return (1); | |
2533 | ||
2534 | case BIO_C_GET_FILE_PTR : | |
2535 | if (arg2) | |
2536 | { | |
2537 | *((void **)arg2) = h->ptr; | |
2538 | return (1); | |
2539 | } | |
2540 | else | |
2541 | return (0); | |
ef55b745 | 2542 | |
411affcf | 2543 | case BIO_CTRL_DUP : |
2544 | case BIO_CTRL_FLUSH : | |
2545 | return (1); | |
2546 | } | |
2547 | } | |
2548 | ||
2549 | ||
2550 | /* | |
2551 | * 'http_bio_free()' - Free OpenSSL data. | |
2552 | */ | |
2553 | ||
2554 | static int /* O - 1 on success, 0 on failure */ | |
2555 | http_bio_free(BIO *h) /* I - BIO data */ | |
2556 | { | |
2557 | if (!h) | |
2558 | return (0); | |
2559 | ||
2560 | if (h->shutdown) | |
2561 | { | |
2562 | h->init = 0; | |
2563 | h->flags = 0; | |
2564 | } | |
2565 | ||
2566 | return (1); | |
2567 | } | |
2568 | ||
2569 | ||
2570 | /* | |
2571 | * 'http_bio_new()' - Initialize an OpenSSL BIO structure. | |
2572 | */ | |
2573 | ||
2574 | static int /* O - 1 on success, 0 on failure */ | |
2575 | http_bio_new(BIO *h) /* I - BIO data */ | |
2576 | { | |
2577 | if (!h) | |
2578 | return (0); | |
2579 | ||
2580 | h->init = 0; | |
2581 | h->num = 0; | |
2582 | h->ptr = NULL; | |
2583 | h->flags = 0; | |
2584 | ||
2585 | return (1); | |
2586 | } | |
2587 | ||
2588 | ||
2589 | /* | |
2590 | * 'http_bio_puts()' - Send a string for OpenSSL. | |
2591 | */ | |
2592 | ||
2593 | static int /* O - Bytes written */ | |
2594 | http_bio_puts(BIO *h, /* I - BIO data */ | |
2595 | const char *str) /* I - String to write */ | |
2596 | { | |
b86bc4cf | 2597 | #ifdef WIN32 |
2598 | return (send(((http_t *)h->ptr)->fd, str, (int)strlen(str), 0)); | |
2599 | #else | |
411affcf | 2600 | return (send(((http_t *)h->ptr)->fd, str, strlen(str), 0)); |
b86bc4cf | 2601 | #endif /* WIN32 */ |
411affcf | 2602 | } |
2603 | ||
2604 | ||
2605 | /* | |
2606 | * 'http_bio_read()' - Read data for OpenSSL. | |
2607 | */ | |
2608 | ||
2609 | static int /* O - Bytes read */ | |
2610 | http_bio_read(BIO *h, /* I - BIO data */ | |
2611 | char *buf, /* I - Buffer */ | |
2612 | int size) /* I - Number of bytes to read */ | |
2613 | { | |
2614 | http_t *http; /* HTTP connection */ | |
2615 | ||
2616 | ||
2617 | http = (http_t *)h->ptr; | |
2618 | ||
2619 | if (!http->blocking) | |
2620 | { | |
2621 | /* | |
2622 | * Make sure we have data before we read... | |
2623 | */ | |
2624 | ||
38e73f87 | 2625 | if (!_httpWait(http, 10000, 0)) |
411affcf | 2626 | { |
b86bc4cf | 2627 | #ifdef WIN32 |
2628 | http->error = WSAETIMEDOUT; | |
2629 | #else | |
411affcf | 2630 | http->error = ETIMEDOUT; |
b86bc4cf | 2631 | #endif /* WIN32 */ |
2632 | ||
411affcf | 2633 | return (-1); |
2634 | } | |
2635 | } | |
2636 | ||
2637 | return (recv(http->fd, buf, size, 0)); | |
2638 | } | |
2639 | ||
2640 | ||
2641 | /* | |
2642 | * 'http_bio_write()' - Write data for OpenSSL. | |
2643 | */ | |
2644 | ||
2645 | static int /* O - Bytes written */ | |
2646 | http_bio_write(BIO *h, /* I - BIO data */ | |
2647 | const char *buf, /* I - Buffer to write */ | |
2648 | int num) /* I - Number of bytes to write */ | |
2649 | { | |
2650 | return (send(((http_t *)h->ptr)->fd, buf, num, 0)); | |
2651 | } | |
2652 | #endif /* HAVE_SSL && HAVE_LIBSSL */ | |
2653 | ||
2654 | ||
ae71f5de MS |
2655 | #ifdef DEBUG |
2656 | /* | |
2657 | * 'http_debug_hex()' - Do a hex dump of a buffer. | |
2658 | */ | |
2659 | ||
2660 | static void | |
2661 | http_debug_hex(const char *prefix, /* I - Prefix for line */ | |
2662 | const char *buffer, /* I - Buffer to dump */ | |
2663 | int bytes) /* I - Bytes to dump */ | |
2664 | { | |
2665 | int i, j, /* Looping vars */ | |
2666 | ch; /* Current character */ | |
2667 | char line[255], /* Line buffer */ | |
2668 | *start, /* Start of line after prefix */ | |
2669 | *ptr; /* Pointer into line */ | |
2670 | ||
2671 | ||
f11a948a | 2672 | if (_cups_debug_fd < 0 || _cups_debug_level < 6) |
dd1abb6b MS |
2673 | return; |
2674 | ||
e07d4801 | 2675 | DEBUG_printf(("6%s: %d bytes:\n", prefix, bytes)); |
ae71f5de | 2676 | |
f11a948a | 2677 | snprintf(line, sizeof(line), "6%s: ", prefix); |
ae71f5de MS |
2678 | start = line + strlen(line); |
2679 | ||
2680 | for (i = 0; i < bytes; i += 16) | |
2681 | { | |
2682 | for (j = 0, ptr = start; j < 16 && (i + j) < bytes; j ++, ptr += 2) | |
2683 | sprintf(ptr, "%02X", buffer[i + j] & 255); | |
2684 | ||
2685 | while (j < 16) | |
2686 | { | |
2687 | strcpy(ptr, " "); | |
2688 | ptr += 2; | |
2689 | j ++; | |
2690 | } | |
2691 | ||
2692 | strcpy(ptr, " "); | |
2693 | ptr += 2; | |
2694 | ||
2695 | for (j = 0; j < 16 && (i + j) < bytes; j ++) | |
2696 | { | |
2697 | ch = buffer[i + j] & 255; | |
2698 | ||
2699 | if (ch < ' ' || ch >= 127) | |
2700 | ch = '.'; | |
2701 | ||
2702 | *ptr++ = ch; | |
2703 | } | |
2704 | ||
2705 | *ptr = '\0'; | |
2706 | DEBUG_puts(line); | |
2707 | } | |
2708 | } | |
2709 | #endif /* DEBUG */ | |
2710 | ||
2711 | ||
ef416fc2 | 2712 | /* |
2713 | * 'http_field()' - Return the field index for a field name. | |
2714 | */ | |
2715 | ||
ae71f5de MS |
2716 | static http_field_t /* O - Field index */ |
2717 | http_field(const char *name) /* I - String name */ | |
ef416fc2 | 2718 | { |
ae71f5de | 2719 | int i; /* Looping var */ |
ef416fc2 | 2720 | |
2721 | ||
2722 | for (i = 0; i < HTTP_FIELD_MAX; i ++) | |
2723 | if (strcasecmp(name, http_fields[i]) == 0) | |
2724 | return ((http_field_t)i); | |
2725 | ||
2726 | return (HTTP_FIELD_UNKNOWN); | |
2727 | } | |
2728 | ||
2729 | ||
2730 | #ifdef HAVE_SSL | |
2731 | /* | |
2732 | * 'http_read_ssl()' - Read from a SSL/TLS connection. | |
2733 | */ | |
2734 | ||
2735 | static int /* O - Bytes read */ | |
568fa3fa | 2736 | http_read_ssl(http_t *http, /* I - Connection to server */ |
ef416fc2 | 2737 | char *buf, /* I - Buffer to store data */ |
2738 | int len) /* I - Length of buffer */ | |
2739 | { | |
2740 | # if defined(HAVE_LIBSSL) | |
2741 | return (SSL_read((SSL *)(http->tls), buf, len)); | |
2742 | ||
2743 | # elif defined(HAVE_GNUTLS) | |
ef55b745 MS |
2744 | ssize_t result; /* Return value */ |
2745 | ||
2746 | ||
2747 | result = gnutls_record_recv(((http_tls_t *)(http->tls))->session, buf, len); | |
2748 | ||
2749 | if (result < 0 && !errno) | |
2750 | { | |
2751 | /* | |
2752 | * Convert GNU TLS error to errno value... | |
2753 | */ | |
2754 | ||
2755 | switch (result) | |
2756 | { | |
2757 | case GNUTLS_E_INTERRUPTED : | |
2758 | errno = EINTR; | |
2759 | break; | |
2760 | ||
2761 | case GNUTLS_E_AGAIN : | |
2762 | errno = EAGAIN; | |
2763 | break; | |
2764 | ||
2765 | default : | |
2766 | errno = EPIPE; | |
2767 | break; | |
2768 | } | |
2769 | ||
2770 | result = -1; | |
2771 | } | |
2772 | ||
2773 | return ((int)result); | |
ef416fc2 | 2774 | |
2775 | # elif defined(HAVE_CDSASSL) | |
fa73b229 | 2776 | int result; /* Return value */ |
ef416fc2 | 2777 | OSStatus error; /* Error info */ |
2778 | size_t processed; /* Number of bytes processed */ | |
2779 | ||
2780 | ||
89d46774 | 2781 | error = SSLRead(((http_tls_t *)http->tls)->session, buf, len, &processed); |
ef416fc2 | 2782 | |
fa73b229 | 2783 | switch (error) |
ef416fc2 | 2784 | { |
fa73b229 | 2785 | case 0 : |
2786 | result = (int)processed; | |
2787 | break; | |
2788 | case errSSLClosedGraceful : | |
2789 | result = 0; | |
2790 | break; | |
2791 | case errSSLWouldBlock : | |
b423cd4c | 2792 | if (processed) |
2793 | result = (int)processed; | |
2794 | else | |
2795 | { | |
2796 | result = -1; | |
2797 | errno = EINTR; | |
2798 | } | |
fa73b229 | 2799 | break; |
2800 | default : | |
2801 | errno = EPIPE; | |
2802 | result = -1; | |
2803 | break; | |
ef416fc2 | 2804 | } |
fa73b229 | 2805 | |
2806 | return (result); | |
ef416fc2 | 2807 | # endif /* HAVE_LIBSSL */ |
2808 | } | |
2809 | #endif /* HAVE_SSL */ | |
2810 | ||
2811 | ||
2812 | /* | |
2813 | * 'http_send()' - Send a request with all fields and the trailing blank line. | |
2814 | */ | |
2815 | ||
2816 | static int /* O - 0 on success, non-zero on error */ | |
568fa3fa | 2817 | http_send(http_t *http, /* I - Connection to server */ |
ef416fc2 | 2818 | http_state_t request, /* I - Request code */ |
2819 | const char *uri) /* I - URI */ | |
2820 | { | |
2821 | int i; /* Looping var */ | |
839a51c8 | 2822 | char buf[1024]; /* Encoded URI buffer */ |
ef416fc2 | 2823 | static const char * const codes[] = |
2824 | { /* Request code strings */ | |
2825 | NULL, | |
2826 | "OPTIONS", | |
2827 | "GET", | |
2828 | NULL, | |
2829 | "HEAD", | |
2830 | "POST", | |
2831 | NULL, | |
2832 | NULL, | |
2833 | "PUT", | |
2834 | NULL, | |
2835 | "DELETE", | |
2836 | "TRACE", | |
2837 | "CLOSE" | |
2838 | }; | |
ef416fc2 | 2839 | |
2840 | ||
e07d4801 | 2841 | DEBUG_printf(("7http_send(http=%p, request=HTTP_%s, uri=\"%s\")", |
ef416fc2 | 2842 | http, codes[request], uri)); |
2843 | ||
2844 | if (http == NULL || uri == NULL) | |
2845 | return (-1); | |
2846 | ||
2847 | /* | |
2848 | * Set the User-Agent field if it isn't already... | |
2849 | */ | |
2850 | ||
2851 | if (!http->fields[HTTP_FIELD_USER_AGENT][0]) | |
2852 | httpSetField(http, HTTP_FIELD_USER_AGENT, CUPS_MINIMAL); | |
2853 | ||
2854 | /* | |
2855 | * Encode the URI as needed... | |
2856 | */ | |
2857 | ||
839a51c8 | 2858 | _httpEncodeURI(buf, uri, sizeof(buf)); |
ef416fc2 | 2859 | |
2860 | /* | |
2861 | * See if we had an error the last time around; if so, reconnect... | |
2862 | */ | |
2863 | ||
2864 | if (http->status == HTTP_ERROR || http->status >= HTTP_BAD_REQUEST) | |
fa73b229 | 2865 | if (httpReconnect(http)) |
2866 | return (-1); | |
ef416fc2 | 2867 | |
d09495fa | 2868 | /* |
2869 | * Flush any written data that is pending... | |
2870 | */ | |
2871 | ||
2872 | if (http->wused) | |
536bc2c6 MS |
2873 | { |
2874 | if (httpFlushWrite(http) < 0) | |
2875 | if (httpReconnect(http)) | |
2876 | return (-1); | |
2877 | } | |
d09495fa | 2878 | |
ef416fc2 | 2879 | /* |
2880 | * Send the request header... | |
2881 | */ | |
2882 | ||
d09495fa | 2883 | http->state = request; |
2884 | http->data_encoding = HTTP_ENCODE_FIELDS; | |
2885 | ||
ef416fc2 | 2886 | if (request == HTTP_POST || request == HTTP_PUT) |
2887 | http->state ++; | |
2888 | ||
2889 | http->status = HTTP_CONTINUE; | |
2890 | ||
2891 | #ifdef HAVE_SSL | |
2892 | if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls) | |
2893 | { | |
2894 | httpSetField(http, HTTP_FIELD_CONNECTION, "Upgrade"); | |
2895 | httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.0,SSL/2.0,SSL/3.0"); | |
2896 | } | |
2897 | #endif /* HAVE_SSL */ | |
2898 | ||
2899 | if (httpPrintf(http, "%s %s HTTP/1.1\r\n", codes[request], buf) < 1) | |
2900 | { | |
2901 | http->status = HTTP_ERROR; | |
2902 | return (-1); | |
2903 | } | |
2904 | ||
2905 | for (i = 0; i < HTTP_FIELD_MAX; i ++) | |
2906 | if (http->fields[i][0] != '\0') | |
2907 | { | |
e07d4801 | 2908 | DEBUG_printf(("9http_send: %s: %s", http_fields[i], |
ae71f5de | 2909 | httpGetField(http, i))); |
ef416fc2 | 2910 | |
ef55b745 | 2911 | if (httpPrintf(http, "%s: %s\r\n", http_fields[i], |
f7deaa1a | 2912 | httpGetField(http, i)) < 1) |
ef416fc2 | 2913 | { |
2914 | http->status = HTTP_ERROR; | |
2915 | return (-1); | |
2916 | } | |
2917 | } | |
2918 | ||
2919 | if (http->cookie) | |
2920 | if (httpPrintf(http, "Cookie: $Version=0; %s\r\n", http->cookie) < 1) | |
2921 | { | |
2922 | http->status = HTTP_ERROR; | |
2923 | return (-1); | |
2924 | } | |
2925 | ||
b423cd4c | 2926 | if (http->expect == HTTP_CONTINUE && |
2927 | (http->state == HTTP_POST_RECV || http->state == HTTP_PUT_RECV)) | |
2928 | if (httpPrintf(http, "Expect: 100-continue\r\n") < 1) | |
2929 | { | |
2930 | http->status = HTTP_ERROR; | |
2931 | return (-1); | |
2932 | } | |
2933 | ||
ef416fc2 | 2934 | if (httpPrintf(http, "\r\n") < 1) |
2935 | { | |
2936 | http->status = HTTP_ERROR; | |
2937 | return (-1); | |
2938 | } | |
2939 | ||
536bc2c6 MS |
2940 | if (httpFlushWrite(http) < 0) |
2941 | return (-1); | |
2942 | ||
ef416fc2 | 2943 | httpGetLength2(http); |
2944 | httpClearFields(http); | |
2945 | ||
f7deaa1a | 2946 | /* |
b94498cf | 2947 | * The Kerberos and AuthRef authentication strings can only be used once... |
f7deaa1a | 2948 | */ |
2949 | ||
ef55b745 MS |
2950 | if (http->field_authorization && http->authstring && |
2951 | (!strncmp(http->authstring, "Negotiate", 9) || | |
b94498cf | 2952 | !strncmp(http->authstring, "AuthRef", 7))) |
f7deaa1a | 2953 | { |
2954 | http->_authstring[0] = '\0'; | |
2955 | ||
2956 | if (http->authstring != http->_authstring) | |
2957 | free(http->authstring); | |
ef55b745 | 2958 | |
f7deaa1a | 2959 | http->authstring = http->_authstring; |
2960 | } | |
2961 | ||
ef416fc2 | 2962 | return (0); |
2963 | } | |
2964 | ||
2965 | ||
2966 | #ifdef HAVE_SSL | |
2967 | /* | |
2968 | * 'http_setup_ssl()' - Set up SSL/TLS support on a connection. | |
2969 | */ | |
2970 | ||
2971 | static int /* O - Status of connection */ | |
568fa3fa | 2972 | http_setup_ssl(http_t *http) /* I - Connection to server */ |
ef416fc2 | 2973 | { |
2974 | # ifdef HAVE_LIBSSL | |
89d46774 | 2975 | SSL_CTX *context; /* Context for encryption */ |
2976 | SSL *conn; /* Connection for encryption */ | |
411affcf | 2977 | BIO *bio; /* BIO data */ |
ef416fc2 | 2978 | # elif defined(HAVE_GNUTLS) |
89d46774 | 2979 | http_tls_t *conn; /* TLS session object */ |
ef416fc2 | 2980 | gnutls_certificate_client_credentials *credentials; |
89d46774 | 2981 | /* TLS credentials */ |
ef416fc2 | 2982 | # elif defined(HAVE_CDSASSL) |
89d46774 | 2983 | OSStatus error; /* Error code */ |
2984 | http_tls_t *conn; /* CDSA connection information */ | |
ef416fc2 | 2985 | # endif /* HAVE_LIBSSL */ |
2986 | ||
2987 | ||
e07d4801 | 2988 | DEBUG_printf(("7http_setup_ssl(http=%p)", http)); |
ef416fc2 | 2989 | |
2990 | # ifdef HAVE_LIBSSL | |
2991 | context = SSL_CTX_new(SSLv23_client_method()); | |
2992 | ||
2993 | SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */ | |
2994 | ||
411affcf | 2995 | bio = BIO_new(_httpBIOMethods()); |
2996 | BIO_ctrl(bio, BIO_C_SET_FILE_PTR, 0, (char *)http); | |
2997 | ||
ef416fc2 | 2998 | conn = SSL_new(context); |
411affcf | 2999 | SSL_set_bio(conn, bio, bio); |
ef416fc2 | 3000 | |
ef416fc2 | 3001 | if (SSL_connect(conn) != 1) |
3002 | { | |
3003 | # ifdef DEBUG | |
3004 | unsigned long error; /* Error code */ | |
3005 | ||
3006 | while ((error = ERR_get_error()) != 0) | |
e07d4801 | 3007 | DEBUG_printf(("8http_setup_ssl: %s", ERR_error_string(error, NULL))); |
ef416fc2 | 3008 | # endif /* DEBUG */ |
3009 | ||
3010 | SSL_CTX_free(context); | |
3011 | SSL_free(conn); | |
3012 | ||
3013 | # ifdef WIN32 | |
3014 | http->error = WSAGetLastError(); | |
3015 | # else | |
3016 | http->error = errno; | |
3017 | # endif /* WIN32 */ | |
3018 | http->status = HTTP_ERROR; | |
3019 | ||
3020 | return (HTTP_ERROR); | |
3021 | } | |
3022 | ||
3023 | # elif defined(HAVE_GNUTLS) | |
89d46774 | 3024 | if ((conn = (http_tls_t *)malloc(sizeof(http_tls_t))) == NULL) |
ef416fc2 | 3025 | { |
3026 | http->error = errno; | |
3027 | http->status = HTTP_ERROR; | |
3028 | ||
3029 | return (-1); | |
3030 | } | |
3031 | ||
3032 | credentials = (gnutls_certificate_client_credentials *) | |
3033 | malloc(sizeof(gnutls_certificate_client_credentials)); | |
3034 | if (credentials == NULL) | |
3035 | { | |
3036 | free(conn); | |
3037 | ||
3038 | http->error = errno; | |
3039 | http->status = HTTP_ERROR; | |
3040 | ||
3041 | return (-1); | |
3042 | } | |
3043 | ||
3044 | gnutls_certificate_allocate_credentials(credentials); | |
3045 | ||
3046 | gnutls_init(&(conn->session), GNUTLS_CLIENT); | |
3047 | gnutls_set_default_priority(conn->session); | |
3048 | gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials); | |
411affcf | 3049 | gnutls_transport_set_ptr(conn->session, (gnutls_transport_ptr)http); |
3050 | gnutls_transport_set_pull_function(conn->session, _httpReadGNUTLS); | |
3051 | gnutls_transport_set_push_function(conn->session, _httpWriteGNUTLS); | |
ef416fc2 | 3052 | |
3053 | if ((gnutls_handshake(conn->session)) != GNUTLS_E_SUCCESS) | |
3054 | { | |
3055 | http->error = errno; | |
3056 | http->status = HTTP_ERROR; | |
3057 | ||
85b5d1df MS |
3058 | gnutls_deinit(conn->session); |
3059 | gnutls_certificate_free_credentials(*credentials); | |
3060 | free(credentials); | |
3061 | free(conn); | |
3062 | ||
ef416fc2 | 3063 | return (-1); |
3064 | } | |
3065 | ||
3066 | conn->credentials = credentials; | |
3067 | ||
3068 | # elif defined(HAVE_CDSASSL) | |
89d46774 | 3069 | conn = (http_tls_t *)calloc(1, sizeof(http_tls_t)); |
e53920b9 | 3070 | |
89d46774 | 3071 | if (conn == NULL) |
3072 | return (-1); | |
e53920b9 | 3073 | |
89d46774 | 3074 | if ((error = SSLNewContext(false, &conn->session))) |
e53920b9 | 3075 | { |
89d46774 | 3076 | http->error = error; |
3077 | http->status = HTTP_ERROR; | |
e53920b9 | 3078 | |
89d46774 | 3079 | free(conn); |
3080 | return (-1); | |
e53920b9 | 3081 | } |
ef416fc2 | 3082 | |
89d46774 | 3083 | /* |
3084 | * Use a union to resolve warnings about int/pointer size mismatches... | |
3085 | */ | |
3086 | ||
411affcf | 3087 | error = SSLSetConnection(conn->session, http); |
89d46774 | 3088 | |
3089 | if (!error) | |
3090 | error = SSLSetIOFuncs(conn->session, _httpReadCDSA, _httpWriteCDSA); | |
3091 | ||
ef416fc2 | 3092 | if (!error) |
89d46774 | 3093 | error = SSLSetAllowsExpiredCerts(conn->session, true); |
ef416fc2 | 3094 | |
3095 | if (!error) | |
89d46774 | 3096 | error = SSLSetAllowsAnyRoot(conn->session, true); |
ef416fc2 | 3097 | |
ed486911 | 3098 | if (!error) |
3099 | error = SSLSetProtocolVersionEnabled(conn->session, kSSLProtocol2, false); | |
3100 | ||
ef416fc2 | 3101 | if (!error) |
b423cd4c | 3102 | { |
89d46774 | 3103 | while ((error = SSLHandshake(conn->session)) == errSSLWouldBlock) |
b423cd4c | 3104 | usleep(1000); |
3105 | } | |
ef416fc2 | 3106 | |
89d46774 | 3107 | if (error) |
ef416fc2 | 3108 | { |
3109 | http->error = error; | |
3110 | http->status = HTTP_ERROR; | |
3111 | ||
89d46774 | 3112 | SSLDisposeContext(conn->session); |
ef416fc2 | 3113 | |
89d46774 | 3114 | free(conn); |
ef416fc2 | 3115 | |
3116 | return (-1); | |
3117 | } | |
3118 | # endif /* HAVE_CDSASSL */ | |
3119 | ||
3120 | http->tls = conn; | |
3121 | return (0); | |
3122 | } | |
3123 | #endif /* HAVE_SSL */ | |
3124 | ||
3125 | ||
3126 | #ifdef HAVE_SSL | |
3127 | /* | |
3128 | * 'http_shutdown_ssl()' - Shut down SSL/TLS on a connection. | |
3129 | */ | |
3130 | ||
3131 | static void | |
568fa3fa | 3132 | http_shutdown_ssl(http_t *http) /* I - Connection to server */ |
ef416fc2 | 3133 | { |
3134 | # ifdef HAVE_LIBSSL | |
89d46774 | 3135 | SSL_CTX *context; /* Context for encryption */ |
3136 | SSL *conn; /* Connection for encryption */ | |
ef416fc2 | 3137 | |
3138 | ||
3139 | conn = (SSL *)(http->tls); | |
3140 | context = SSL_get_SSL_CTX(conn); | |
3141 | ||
3142 | SSL_shutdown(conn); | |
3143 | SSL_CTX_free(context); | |
3144 | SSL_free(conn); | |
3145 | ||
3146 | # elif defined(HAVE_GNUTLS) | |
89d46774 | 3147 | http_tls_t *conn; /* Encryption session */ |
ef416fc2 | 3148 | gnutls_certificate_client_credentials *credentials; |
89d46774 | 3149 | /* TLS credentials */ |
ef416fc2 | 3150 | |
3151 | ||
3152 | conn = (http_tls_t *)(http->tls); | |
3153 | credentials = (gnutls_certificate_client_credentials *)(conn->credentials); | |
3154 | ||
3155 | gnutls_bye(conn->session, GNUTLS_SHUT_RDWR); | |
3156 | gnutls_deinit(conn->session); | |
3157 | gnutls_certificate_free_credentials(*credentials); | |
3158 | free(credentials); | |
3159 | free(conn); | |
3160 | ||
3161 | # elif defined(HAVE_CDSASSL) | |
89d46774 | 3162 | http_tls_t *conn; /* CDSA connection information */ |
3163 | ||
3164 | ||
3165 | conn = (http_tls_t *)(http->tls); | |
3166 | ||
3167 | while (SSLClose(conn->session) == errSSLWouldBlock) | |
b423cd4c | 3168 | usleep(1000); |
3169 | ||
89d46774 | 3170 | SSLDisposeContext(conn->session); |
3171 | ||
3172 | if (conn->certsArray) | |
3173 | CFRelease(conn->certsArray); | |
3174 | ||
3175 | free(conn); | |
ef416fc2 | 3176 | # endif /* HAVE_LIBSSL */ |
3177 | ||
3178 | http->tls = NULL; | |
3179 | } | |
3180 | #endif /* HAVE_SSL */ | |
3181 | ||
3182 | ||
3183 | #ifdef HAVE_SSL | |
3184 | /* | |
3185 | * 'http_upgrade()' - Force upgrade to TLS encryption. | |
3186 | */ | |
3187 | ||
89d46774 | 3188 | static int /* O - Status of connection */ |
568fa3fa | 3189 | http_upgrade(http_t *http) /* I - Connection to server */ |
ef416fc2 | 3190 | { |
89d46774 | 3191 | int ret; /* Return value */ |
3192 | http_t myhttp; /* Local copy of HTTP data */ | |
ef416fc2 | 3193 | |
3194 | ||
e07d4801 | 3195 | DEBUG_printf(("7http_upgrade(%p)", http)); |
ef416fc2 | 3196 | |
85b5d1df MS |
3197 | /* |
3198 | * Flush the connection to make sure any previous "Upgrade" message | |
3199 | * has been read. | |
3200 | */ | |
3201 | ||
3202 | httpFlush(http); | |
3203 | ||
ef416fc2 | 3204 | /* |
3205 | * Copy the HTTP data to a local variable so we can do the OPTIONS | |
3206 | * request without interfering with the existing request data... | |
3207 | */ | |
3208 | ||
3209 | memcpy(&myhttp, http, sizeof(myhttp)); | |
3210 | ||
3211 | /* | |
3212 | * Send an OPTIONS request to the server, requiring SSL or TLS | |
3213 | * encryption on the link... | |
3214 | */ | |
3215 | ||
f7deaa1a | 3216 | http->field_authorization = NULL; /* Don't free the auth string */ |
3217 | ||
b86bc4cf | 3218 | httpClearFields(http); |
3219 | httpSetField(http, HTTP_FIELD_CONNECTION, "upgrade"); | |
3220 | httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.0, SSL/2.0, SSL/3.0"); | |
ef416fc2 | 3221 | |
b86bc4cf | 3222 | if ((ret = httpOptions(http, "*")) == 0) |
ef416fc2 | 3223 | { |
3224 | /* | |
3225 | * Wait for the secure connection... | |
3226 | */ | |
3227 | ||
b86bc4cf | 3228 | while (httpUpdate(http) == HTTP_CONTINUE); |
ef416fc2 | 3229 | } |
3230 | ||
ef416fc2 | 3231 | /* |
b86bc4cf | 3232 | * Restore the HTTP request data... |
ef416fc2 | 3233 | */ |
3234 | ||
b86bc4cf | 3235 | memcpy(http->fields, myhttp.fields, sizeof(http->fields)); |
f7deaa1a | 3236 | http->data_encoding = myhttp.data_encoding; |
3237 | http->data_remaining = myhttp.data_remaining; | |
3238 | http->_data_remaining = myhttp._data_remaining; | |
3239 | http->expect = myhttp.expect; | |
3240 | http->field_authorization = myhttp.field_authorization; | |
bc44d920 | 3241 | http->digest_tries = myhttp.digest_tries; |
ef416fc2 | 3242 | |
3243 | /* | |
3244 | * See if we actually went secure... | |
3245 | */ | |
3246 | ||
3247 | if (!http->tls) | |
3248 | { | |
3249 | /* | |
3250 | * Server does not support HTTP upgrade... | |
3251 | */ | |
3252 | ||
e07d4801 | 3253 | DEBUG_puts("8http_upgrade: Server does not support HTTP upgrade!"); |
ef416fc2 | 3254 | |
3255 | # ifdef WIN32 | |
3256 | closesocket(http->fd); | |
3257 | # else | |
3258 | close(http->fd); | |
3259 | # endif | |
3260 | ||
3261 | http->fd = -1; | |
3262 | ||
3263 | return (-1); | |
3264 | } | |
3265 | else | |
3266 | return (ret); | |
3267 | } | |
3268 | #endif /* HAVE_SSL */ | |
3269 | ||
3270 | ||
ef416fc2 | 3271 | /* |
3272 | * 'http_write()' - Write a buffer to a HTTP connection. | |
3273 | */ | |
ef55b745 | 3274 | |
ef416fc2 | 3275 | static int /* O - Number of bytes written */ |
568fa3fa | 3276 | http_write(http_t *http, /* I - Connection to server */ |
f11a948a MS |
3277 | const char *buffer, /* I - Buffer for data */ |
3278 | int length) /* I - Number of bytes to write */ | |
ef416fc2 | 3279 | { |
3280 | int tbytes, /* Total bytes sent */ | |
3281 | bytes; /* Bytes sent */ | |
3282 | ||
3283 | ||
f8b3a85b MS |
3284 | DEBUG_printf(("2http_write(http=%p, buffer=%p, length=%d)", http, buffer, |
3285 | length)); | |
f11a948a MS |
3286 | http->error = 0; |
3287 | tbytes = 0; | |
ef416fc2 | 3288 | |
3289 | while (length > 0) | |
3290 | { | |
3291 | #ifdef HAVE_SSL | |
3292 | if (http->tls) | |
3293 | bytes = http_write_ssl(http, buffer, length); | |
3294 | else | |
3295 | #endif /* HAVE_SSL */ | |
3296 | bytes = send(http->fd, buffer, length, 0); | |
3297 | ||
3298 | if (bytes < 0) | |
3299 | { | |
3300 | #ifdef WIN32 | |
3301 | if (WSAGetLastError() != http->error) | |
3302 | { | |
3303 | http->error = WSAGetLastError(); | |
3304 | continue; | |
3305 | } | |
3306 | #else | |
e07d4801 | 3307 | if (errno == EINTR || errno == EAGAIN) |
ef416fc2 | 3308 | continue; |
3309 | else if (errno != http->error && errno != ECONNRESET) | |
3310 | { | |
3311 | http->error = errno; | |
3312 | continue; | |
3313 | } | |
3314 | #endif /* WIN32 */ | |
3315 | ||
f8b3a85b MS |
3316 | DEBUG_printf(("3http_write: error writing data (%s).", |
3317 | strerror(http->error))); | |
ef416fc2 | 3318 | |
3319 | return (-1); | |
3320 | } | |
3321 | ||
3322 | buffer += bytes; | |
3323 | tbytes += bytes; | |
3324 | length -= bytes; | |
3325 | } | |
3326 | ||
3327 | #ifdef DEBUG | |
ae71f5de | 3328 | http_debug_hex("http_write", buffer - tbytes, tbytes); |
ef416fc2 | 3329 | #endif /* DEBUG */ |
3330 | ||
f8b3a85b MS |
3331 | DEBUG_printf(("3http_write: Returning %d.", tbytes)); |
3332 | ||
ef416fc2 | 3333 | return (tbytes); |
3334 | } | |
3335 | ||
3336 | ||
3337 | /* | |
3338 | * 'http_write_chunk()' - Write a chunked buffer. | |
3339 | */ | |
3340 | ||
3341 | static int /* O - Number bytes written */ | |
568fa3fa | 3342 | http_write_chunk(http_t *http, /* I - Connection to server */ |
ef416fc2 | 3343 | const char *buffer, /* I - Buffer to write */ |
3344 | int length) /* I - Length of buffer */ | |
3345 | { | |
3346 | char header[255]; /* Chunk header */ | |
3347 | int bytes; /* Bytes written */ | |
3348 | ||
f11a948a | 3349 | |
e07d4801 | 3350 | DEBUG_printf(("7http_write_chunk(http=%p, buffer=%p, length=%d)", |
ef416fc2 | 3351 | http, buffer, length)); |
3352 | ||
3353 | /* | |
3354 | * Write the chunk header, data, and trailer. | |
3355 | */ | |
3356 | ||
3357 | sprintf(header, "%x\r\n", length); | |
b86bc4cf | 3358 | if (http_write(http, header, (int)strlen(header)) < 0) |
ef416fc2 | 3359 | { |
e07d4801 | 3360 | DEBUG_puts("8http_write_chunk: http_write of length failed!"); |
ef416fc2 | 3361 | return (-1); |
3362 | } | |
3363 | ||
3364 | if ((bytes = http_write(http, buffer, length)) < 0) | |
3365 | { | |
e07d4801 | 3366 | DEBUG_puts("8http_write_chunk: http_write of buffer failed!"); |
ef416fc2 | 3367 | return (-1); |
3368 | } | |
3369 | ||
3370 | if (http_write(http, "\r\n", 2) < 0) | |
3371 | { | |
e07d4801 | 3372 | DEBUG_puts("8http_write_chunk: http_write of CR LF failed!"); |
ef416fc2 | 3373 | return (-1); |
3374 | } | |
3375 | ||
3376 | return (bytes); | |
3377 | } | |
3378 | ||
3379 | ||
3380 | #ifdef HAVE_SSL | |
3381 | /* | |
3382 | * 'http_write_ssl()' - Write to a SSL/TLS connection. | |
3383 | */ | |
3384 | ||
3385 | static int /* O - Bytes written */ | |
568fa3fa | 3386 | http_write_ssl(http_t *http, /* I - Connection to server */ |
ef416fc2 | 3387 | const char *buf, /* I - Buffer holding data */ |
3388 | int len) /* I - Length of buffer */ | |
3389 | { | |
f8b3a85b MS |
3390 | ssize_t result; /* Return value */ |
3391 | ||
3392 | ||
3393 | DEBUG_printf(("2http_write_ssl(http=%p, buf=%p, len=%d)", http, buf, len)); | |
3394 | ||
ef416fc2 | 3395 | # if defined(HAVE_LIBSSL) |
f8b3a85b | 3396 | result = SSL_write((SSL *)(http->tls), buf, len); |
ef416fc2 | 3397 | |
3398 | # elif defined(HAVE_GNUTLS) | |
ef55b745 MS |
3399 | result = gnutls_record_send(((http_tls_t *)(http->tls))->session, buf, len); |
3400 | ||
3401 | if (result < 0 && !errno) | |
3402 | { | |
3403 | /* | |
3404 | * Convert GNU TLS error to errno value... | |
3405 | */ | |
3406 | ||
3407 | switch (result) | |
3408 | { | |
3409 | case GNUTLS_E_INTERRUPTED : | |
3410 | errno = EINTR; | |
3411 | break; | |
3412 | ||
3413 | case GNUTLS_E_AGAIN : | |
3414 | errno = EAGAIN; | |
3415 | break; | |
3416 | ||
3417 | default : | |
3418 | errno = EPIPE; | |
3419 | break; | |
3420 | } | |
3421 | ||
3422 | result = -1; | |
3423 | } | |
3424 | ||
ef416fc2 | 3425 | # elif defined(HAVE_CDSASSL) |
3426 | OSStatus error; /* Error info */ | |
3427 | size_t processed; /* Number of bytes processed */ | |
3428 | ||
3429 | ||
89d46774 | 3430 | error = SSLWrite(((http_tls_t *)http->tls)->session, buf, len, &processed); |
ef416fc2 | 3431 | |
fa73b229 | 3432 | switch (error) |
ef416fc2 | 3433 | { |
fa73b229 | 3434 | case 0 : |
3435 | result = (int)processed; | |
3436 | break; | |
3437 | case errSSLClosedGraceful : | |
3438 | result = 0; | |
3439 | break; | |
3440 | case errSSLWouldBlock : | |
b423cd4c | 3441 | if (processed) |
3442 | result = (int)processed; | |
3443 | else | |
3444 | { | |
3445 | result = -1; | |
ef55b745 | 3446 | errno = EINTR; |
b423cd4c | 3447 | } |
fa73b229 | 3448 | break; |
3449 | default : | |
ef55b745 | 3450 | errno = EPIPE; |
fa73b229 | 3451 | result = -1; |
3452 | break; | |
ef416fc2 | 3453 | } |
3454 | # endif /* HAVE_LIBSSL */ | |
f8b3a85b MS |
3455 | |
3456 | DEBUG_printf(("3http_write_ssl: Returning %d.", (int)result)); | |
3457 | ||
3458 | return ((int)result); | |
ef416fc2 | 3459 | } |
3460 | #endif /* HAVE_SSL */ | |
3461 | ||
3462 | ||
3463 | /* | |
b19ccc9e | 3464 | * End of "$Id: http.c 7850 2008-08-20 00:07:25Z mike $". |
ef416fc2 | 3465 | */ |