]>
Commit | Line | Data |
---|---|---|
ef416fc2 | 1 | /* |
75bd9771 | 2 | * "$Id: http.c 7661 2008-06-16 21:46:51Z mike $" |
ef416fc2 | 3 | * |
4 | * HTTP routines for the Common UNIX Printing System (CUPS). | |
5 | * | |
91c84a35 | 6 | * Copyright 2007-2008 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. |
ef416fc2 | 24 | * httpCheck() - Check to see if there is a pending response from |
25 | * the server. | |
26 | * httpClearCookie() - Clear the cookie value(s). | |
ecdc0628 | 27 | * httpClearFields() - Clear HTTP request fields. |
ef416fc2 | 28 | * httpClose() - Close an HTTP connection... |
29 | * httpConnect() - Connect to a HTTP server. | |
30 | * httpConnectEncrypt() - Connect to a HTTP server using encryption. | |
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. |
49 | * httpGets() - Get a line of text from a HTTP connection. | |
50 | * httpHead() - Send a HEAD request to the server. | |
51 | * httpInitialize() - Initialize the HTTP interface library and set the | |
52 | * default HTTP proxy (if any). | |
53 | * httpOptions() - Send an OPTIONS request to the server. | |
54 | * httpPost() - Send a POST request to the server. | |
55 | * httpPrintf() - Print a formatted string to a HTTP connection. | |
56 | * httpPut() - Send a PUT request to the server. | |
57 | * httpRead() - Read data from a HTTP connection. | |
a4d04587 | 58 | * httpRead2() - Read data from a HTTP connection. |
411affcf | 59 | * _httpReadCDSA() - Read function for the CDSA library. |
60 | * _httpReadGNUTLS() - Read function for the GNU TLS library. | |
ef416fc2 | 61 | * httpReconnect() - Reconnect to a HTTP server... |
355e94dc | 62 | * httpSetAuthString() - Set the current authorization string. |
ef416fc2 | 63 | * httpSetCookie() - Set the cookie value(s)... |
b423cd4c | 64 | * httpSetExpect() - Set the Expect: header in a request. |
ef416fc2 | 65 | * httpSetField() - Set the value of an HTTP header. |
66 | * httpSetLength() - Set the content-length and transfer-encoding. | |
67 | * httpTrace() - Send an TRACE request to the server. | |
68 | * httpUpdate() - Update the current HTTP state for incoming data. | |
69 | * httpWait() - Wait for data available on a connection. | |
70 | * httpWrite() - Write data to a HTTP connection. | |
a4d04587 | 71 | * httpWrite2() - Write data to a HTTP connection. |
411affcf | 72 | * _httpWriteCDSA() - Write function for the CDSA library. |
73 | * _httpWriteGNUTLS() - Write function for the GNU TLS library. | |
74 | * http_bio_ctrl() - Control the HTTP connection. | |
75 | * http_bio_free() - Free OpenSSL data. | |
76 | * http_bio_new() - Initialize an OpenSSL BIO structure. | |
77 | * http_bio_puts() - Send a string for OpenSSL. | |
78 | * http_bio_read() - Read data for OpenSSL. | |
79 | * http_bio_write() - Write data for OpenSSL. | |
ae71f5de | 80 | * http_debug_hex() - Do a hex dump of a buffer. |
ef416fc2 | 81 | * http_field() - Return the field index for a field name. |
82 | * http_read_ssl() - Read from a SSL/TLS connection. | |
83 | * http_send() - Send a request with all fields and the trailing | |
84 | * blank line. | |
85 | * http_setup_ssl() - Set up SSL/TLS on a connection. | |
86 | * http_shutdown_ssl() - Shut down SSL/TLS on a connection. | |
87 | * http_upgrade() - Force upgrade to TLS encryption. | |
88 | * http_wait() - Wait for data available on a connection. | |
89 | * http_write() - Write data to a connection. | |
90 | * http_write_ssl() - Write to a SSL/TLS connection. | |
91 | */ | |
92 | ||
93 | /* | |
94 | * Include necessary headers... | |
95 | */ | |
96 | ||
97 | #include "http-private.h" | |
98 | #include "globals.h" | |
99 | #include "debug.h" | |
100 | #include <stdlib.h> | |
101 | #include <fcntl.h> | |
102 | #include <errno.h> | |
103 | #ifndef WIN32 | |
104 | # include <signal.h> | |
105 | # include <sys/time.h> | |
106 | # include <sys/resource.h> | |
107 | #endif /* !WIN32 */ | |
f7deaa1a | 108 | #ifdef HAVE_POLL |
109 | # include <sys/poll.h> | |
110 | #endif /* HAVE_POLL */ | |
ef416fc2 | 111 | |
112 | ||
113 | /* | |
114 | * Some operating systems have done away with the Fxxxx constants for | |
115 | * the fcntl() call; this works around that "feature"... | |
116 | */ | |
117 | ||
118 | #ifndef FNONBLK | |
119 | # define FNONBLK O_NONBLOCK | |
120 | #endif /* !FNONBLK */ | |
121 | ||
122 | ||
123 | /* | |
124 | * Local functions... | |
125 | */ | |
126 | ||
ae71f5de MS |
127 | #ifdef DEBUG |
128 | static void http_debug_hex(const char *prefix, const char *buffer, | |
129 | int bytes); | |
130 | #endif /* DEBUG */ | |
ef416fc2 | 131 | static http_field_t http_field(const char *name); |
132 | static int http_send(http_t *http, http_state_t request, | |
133 | const char *uri); | |
411affcf | 134 | static int http_wait(http_t *http, int msec, int usessl); |
ef416fc2 | 135 | static int http_write(http_t *http, const char *buffer, |
136 | int length); | |
137 | static int http_write_chunk(http_t *http, const char *buffer, | |
138 | int length); | |
139 | #ifdef HAVE_SSL | |
140 | static int http_read_ssl(http_t *http, char *buf, int len); | |
141 | static int http_setup_ssl(http_t *http); | |
142 | static void http_shutdown_ssl(http_t *http); | |
143 | static int http_upgrade(http_t *http); | |
144 | static int http_write_ssl(http_t *http, const char *buf, int len); | |
145 | #endif /* HAVE_SSL */ | |
146 | ||
147 | ||
148 | /* | |
149 | * Local globals... | |
150 | */ | |
151 | ||
152 | static const char * const http_fields[] = | |
153 | { | |
154 | "Accept-Language", | |
155 | "Accept-Ranges", | |
156 | "Authorization", | |
157 | "Connection", | |
158 | "Content-Encoding", | |
159 | "Content-Language", | |
160 | "Content-Length", | |
161 | "Content-Location", | |
162 | "Content-MD5", | |
163 | "Content-Range", | |
164 | "Content-Type", | |
165 | "Content-Version", | |
166 | "Date", | |
167 | "Host", | |
168 | "If-Modified-Since", | |
169 | "If-Unmodified-since", | |
170 | "Keep-Alive", | |
171 | "Last-Modified", | |
172 | "Link", | |
173 | "Location", | |
174 | "Range", | |
175 | "Referer", | |
176 | "Retry-After", | |
177 | "Transfer-Encoding", | |
178 | "Upgrade", | |
179 | "User-Agent", | |
180 | "WWW-Authenticate" | |
181 | }; | |
182 | ||
183 | ||
411affcf | 184 | #if defined(HAVE_SSL) && defined(HAVE_LIBSSL) |
185 | /* | |
186 | * BIO methods for OpenSSL... | |
187 | */ | |
188 | ||
189 | static int http_bio_write(BIO *h, const char *buf, int num); | |
190 | static int http_bio_read(BIO *h, char *buf, int size); | |
191 | static int http_bio_puts(BIO *h, const char *str); | |
192 | static long http_bio_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
193 | static int http_bio_new(BIO *h); | |
194 | static int http_bio_free(BIO *data); | |
195 | ||
196 | static BIO_METHOD http_bio_methods = | |
197 | { | |
198 | BIO_TYPE_SOCKET, | |
199 | "http", | |
200 | http_bio_write, | |
201 | http_bio_read, | |
202 | http_bio_puts, | |
203 | NULL, /* http_bio_gets, */ | |
204 | http_bio_ctrl, | |
205 | http_bio_new, | |
206 | http_bio_free, | |
207 | NULL, | |
208 | }; | |
209 | ||
210 | ||
211 | /* | |
212 | * '_httpBIOMethods()' - Get the OpenSSL BIO methods for HTTP connections. | |
213 | */ | |
214 | ||
215 | BIO_METHOD * /* O - BIO methods for OpenSSL */ | |
216 | _httpBIOMethods(void) | |
217 | { | |
218 | return (&http_bio_methods); | |
219 | } | |
220 | #endif /* HAVE_SSL && HAVE_LIBSSL */ | |
221 | ||
222 | ||
ecdc0628 | 223 | /* |
224 | * 'httpBlocking()' - Set blocking/non-blocking behavior on a connection. | |
225 | */ | |
226 | ||
227 | void | |
568fa3fa | 228 | httpBlocking(http_t *http, /* I - Connection to server */ |
ecdc0628 | 229 | int b) /* I - 1 = blocking, 0 = non-blocking */ |
230 | { | |
231 | if (http) | |
232 | http->blocking = b; | |
233 | } | |
234 | ||
235 | ||
ef416fc2 | 236 | /* |
237 | * 'httpCheck()' - Check to see if there is a pending response from the server. | |
238 | */ | |
239 | ||
ecdc0628 | 240 | int /* O - 0 = no data, 1 = data available */ |
568fa3fa | 241 | httpCheck(http_t *http) /* I - Connection to server */ |
ef416fc2 | 242 | { |
243 | return (httpWait(http, 0)); | |
244 | } | |
245 | ||
246 | ||
247 | /* | |
248 | * 'httpClearCookie()' - Clear the cookie value(s). | |
249 | * | |
250 | * @since CUPS 1.1.19@ | |
251 | */ | |
252 | ||
253 | void | |
568fa3fa | 254 | httpClearCookie(http_t *http) /* I - Connection to server */ |
ef416fc2 | 255 | { |
256 | if (!http) | |
257 | return; | |
258 | ||
259 | if (http->cookie) | |
260 | { | |
261 | free(http->cookie); | |
262 | http->cookie = NULL; | |
263 | } | |
264 | } | |
265 | ||
266 | ||
ecdc0628 | 267 | /* |
268 | * 'httpClearFields()' - Clear HTTP request fields. | |
269 | */ | |
270 | ||
271 | void | |
568fa3fa | 272 | httpClearFields(http_t *http) /* I - Connection to server */ |
ecdc0628 | 273 | { |
274 | if (http) | |
275 | { | |
276 | memset(http->fields, 0, sizeof(http->fields)); | |
07725fee | 277 | if (http->hostname[0] == '/') |
278 | httpSetField(http, HTTP_FIELD_HOST, "localhost"); | |
279 | else | |
280 | httpSetField(http, HTTP_FIELD_HOST, http->hostname); | |
b423cd4c | 281 | |
f7deaa1a | 282 | if (http->field_authorization) |
283 | { | |
284 | free(http->field_authorization); | |
285 | http->field_authorization = NULL; | |
286 | } | |
287 | ||
b423cd4c | 288 | http->expect = (http_status_t)0; |
ecdc0628 | 289 | } |
290 | } | |
291 | ||
292 | ||
ef416fc2 | 293 | /* |
294 | * 'httpClose()' - Close an HTTP connection... | |
295 | */ | |
296 | ||
297 | void | |
568fa3fa | 298 | httpClose(http_t *http) /* I - Connection to server */ |
ef416fc2 | 299 | { |
f7deaa1a | 300 | #ifdef HAVE_GSSAPI |
1f0275e3 | 301 | OM_uint32 minor_status; /* Minor status code */ |
f7deaa1a | 302 | #endif /* HAVE_GSSAPI */ |
303 | ||
304 | ||
ef416fc2 | 305 | DEBUG_printf(("httpClose(http=%p)\n", http)); |
306 | ||
307 | if (!http) | |
308 | return; | |
309 | ||
310 | httpAddrFreeList(http->addrlist); | |
311 | ||
ef416fc2 | 312 | if (http->cookie) |
313 | free(http->cookie); | |
314 | ||
315 | #ifdef HAVE_SSL | |
316 | if (http->tls) | |
317 | http_shutdown_ssl(http); | |
318 | #endif /* HAVE_SSL */ | |
319 | ||
320 | #ifdef WIN32 | |
321 | closesocket(http->fd); | |
322 | #else | |
323 | close(http->fd); | |
324 | #endif /* WIN32 */ | |
325 | ||
f7deaa1a | 326 | #ifdef HAVE_GSSAPI |
327 | if (http->gssctx != GSS_C_NO_CONTEXT) | |
1f0275e3 | 328 | gss_delete_sec_context(&minor_status, &http->gssctx, GSS_C_NO_BUFFER); |
f7deaa1a | 329 | |
330 | if (http->gssname != GSS_C_NO_NAME) | |
1f0275e3 | 331 | gss_release_name(&minor_status, &http->gssname); |
f7deaa1a | 332 | #endif /* HAVE_GSSAPI */ |
333 | ||
b94498cf | 334 | #ifdef HAVE_AUTHORIZATION_H |
335 | if (http->auth_ref) | |
336 | AuthorizationFree(http->auth_ref, kAuthorizationFlagDefaults); | |
337 | #endif /* HAVE_AUTHORIZATION_H */ | |
338 | ||
f7deaa1a | 339 | httpClearFields(http); |
340 | ||
341 | if (http->authstring && http->authstring != http->_authstring) | |
342 | free(http->authstring); | |
343 | ||
ef416fc2 | 344 | free(http); |
345 | } | |
346 | ||
347 | ||
348 | /* | |
349 | * 'httpConnect()' - Connect to a HTTP server. | |
350 | */ | |
351 | ||
352 | http_t * /* O - New HTTP connection */ | |
353 | httpConnect(const char *host, /* I - Host to connect to */ | |
354 | int port) /* I - Port number */ | |
355 | { | |
356 | http_encryption_t encryption; /* Type of encryption to use */ | |
357 | ||
358 | ||
359 | /* | |
360 | * Set the default encryption status... | |
361 | */ | |
362 | ||
363 | if (port == 443) | |
364 | encryption = HTTP_ENCRYPT_ALWAYS; | |
365 | else | |
366 | encryption = HTTP_ENCRYPT_IF_REQUESTED; | |
367 | ||
368 | return (httpConnectEncrypt(host, port, encryption)); | |
369 | } | |
370 | ||
371 | ||
372 | /* | |
373 | * 'httpConnectEncrypt()' - Connect to a HTTP server using encryption. | |
374 | */ | |
375 | ||
376 | http_t * /* O - New HTTP connection */ | |
377 | httpConnectEncrypt( | |
378 | const char *host, /* I - Host to connect to */ | |
379 | int port, /* I - Port number */ | |
380 | http_encryption_t encryption) /* I - Type of encryption to use */ | |
381 | { | |
382 | http_t *http; /* New HTTP connection */ | |
383 | http_addrlist_t *addrlist; /* Host address data */ | |
384 | char service[255]; /* Service name */ | |
385 | ||
386 | ||
387 | DEBUG_printf(("httpConnectEncrypt(host=\"%s\", port=%d, encryption=%d)\n", | |
388 | host ? host : "(null)", port, encryption)); | |
389 | ||
390 | if (!host) | |
391 | return (NULL); | |
392 | ||
393 | httpInitialize(); | |
394 | ||
395 | /* | |
396 | * Lookup the host... | |
397 | */ | |
398 | ||
399 | sprintf(service, "%d", port); | |
400 | ||
401 | if ((addrlist = httpAddrGetList(host, AF_UNSPEC, service)) == NULL) | |
402 | return (NULL); | |
403 | ||
404 | /* | |
405 | * Allocate memory for the structure... | |
406 | */ | |
407 | ||
91c84a35 MS |
408 | if ((http = calloc(sizeof(http_t), 1)) == NULL) |
409 | { | |
410 | httpAddrFreeList(addrlist); | |
ef416fc2 | 411 | return (NULL); |
91c84a35 | 412 | } |
ef416fc2 | 413 | |
414 | http->version = HTTP_1_1; | |
415 | http->blocking = 1; | |
416 | http->activity = time(NULL); | |
417 | http->fd = -1; | |
418 | ||
f7deaa1a | 419 | #ifdef HAVE_GSSAPI |
420 | http->gssctx = GSS_C_NO_CONTEXT; | |
421 | http->gssname = GSS_C_NO_NAME; | |
422 | #endif /* HAVE_GSSAPI */ | |
423 | ||
ef416fc2 | 424 | /* |
425 | * Set the encryption status... | |
426 | */ | |
427 | ||
428 | if (port == 443) /* Always use encryption for https */ | |
429 | http->encryption = HTTP_ENCRYPT_ALWAYS; | |
430 | else | |
431 | http->encryption = encryption; | |
432 | ||
433 | /* | |
434 | * Loop through the addresses we have until one of them connects... | |
435 | */ | |
436 | ||
437 | strlcpy(http->hostname, host, sizeof(http->hostname)); | |
438 | ||
439 | /* | |
440 | * Connect to the remote system... | |
441 | */ | |
442 | ||
443 | http->addrlist = addrlist; | |
444 | ||
445 | if (!httpReconnect(http)) | |
446 | return (http); | |
447 | ||
448 | /* | |
449 | * Could not connect to any known address - bail out! | |
450 | */ | |
451 | ||
452 | httpAddrFreeList(addrlist); | |
453 | ||
454 | free(http); | |
455 | ||
456 | return (NULL); | |
457 | } | |
458 | ||
459 | ||
460 | /* | |
461 | * 'httpDelete()' - Send a DELETE request to the server. | |
462 | */ | |
463 | ||
464 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 465 | httpDelete(http_t *http, /* I - Connection to server */ |
ef416fc2 | 466 | const char *uri) /* I - URI to delete */ |
467 | { | |
468 | return (http_send(http, HTTP_DELETE, uri)); | |
469 | } | |
470 | ||
471 | ||
472 | /* | |
473 | * 'httpEncryption()' - Set the required encryption on the link. | |
474 | */ | |
475 | ||
476 | int /* O - -1 on error, 0 on success */ | |
568fa3fa | 477 | httpEncryption(http_t *http, /* I - Connection to server */ |
ef416fc2 | 478 | http_encryption_t e) /* I - New encryption preference */ |
479 | { | |
480 | DEBUG_printf(("httpEncryption(http=%p, e=%d)\n", http, e)); | |
481 | ||
482 | #ifdef HAVE_SSL | |
483 | if (!http) | |
484 | return (0); | |
485 | ||
486 | http->encryption = e; | |
487 | ||
488 | if ((http->encryption == HTTP_ENCRYPT_ALWAYS && !http->tls) || | |
489 | (http->encryption == HTTP_ENCRYPT_NEVER && http->tls)) | |
490 | return (httpReconnect(http)); | |
491 | else if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls) | |
492 | return (http_upgrade(http)); | |
493 | else | |
494 | return (0); | |
495 | #else | |
496 | if (e == HTTP_ENCRYPT_ALWAYS || e == HTTP_ENCRYPT_REQUIRED) | |
497 | return (-1); | |
498 | else | |
499 | return (0); | |
500 | #endif /* HAVE_SSL */ | |
501 | } | |
502 | ||
503 | ||
ecdc0628 | 504 | /* |
505 | * 'httpError()' - Get the last error on a connection. | |
506 | */ | |
507 | ||
508 | int /* O - Error code (errno) value */ | |
568fa3fa | 509 | httpError(http_t *http) /* I - Connection to server */ |
ecdc0628 | 510 | { |
511 | if (http) | |
512 | return (http->error); | |
513 | else | |
514 | return (EINVAL); | |
515 | } | |
516 | ||
517 | ||
ef416fc2 | 518 | /* |
519 | * 'httpFlush()' - Flush data from a HTTP connection. | |
520 | */ | |
521 | ||
522 | void | |
568fa3fa | 523 | httpFlush(http_t *http) /* I - Connection to server */ |
ef416fc2 | 524 | { |
525 | char buffer[8192]; /* Junk buffer */ | |
fa73b229 | 526 | int blocking; /* To block or not to block */ |
ef416fc2 | 527 | |
528 | ||
529 | DEBUG_printf(("httpFlush(http=%p), state=%d\n", http, http->state)); | |
530 | ||
fa73b229 | 531 | /* |
532 | * Temporarily set non-blocking mode so we don't get stuck in httpRead()... | |
533 | */ | |
534 | ||
535 | blocking = http->blocking; | |
536 | http->blocking = 0; | |
537 | ||
538 | /* | |
539 | * Read any data we can... | |
540 | */ | |
541 | ||
a4d04587 | 542 | while (httpRead2(http, buffer, sizeof(buffer)) > 0); |
fa73b229 | 543 | |
544 | /* | |
545 | * Restore blocking and reset the connection if we didn't get all of | |
546 | * the remaining data... | |
547 | */ | |
548 | ||
549 | http->blocking = blocking; | |
550 | ||
551 | if (http->state != HTTP_WAITING && http->fd >= 0) | |
552 | { | |
553 | /* | |
554 | * Didn't get the data back, so close the current connection. | |
555 | */ | |
556 | ||
557 | http->state = HTTP_WAITING; | |
558 | ||
559 | #ifdef HAVE_SSL | |
560 | if (http->tls) | |
561 | http_shutdown_ssl(http); | |
562 | #endif /* HAVE_SSL */ | |
563 | ||
564 | #ifdef WIN32 | |
565 | closesocket(http->fd); | |
566 | #else | |
567 | close(http->fd); | |
568 | #endif /* WIN32 */ | |
569 | ||
570 | http->fd = -1; | |
571 | } | |
ef416fc2 | 572 | } |
573 | ||
574 | ||
575 | /* | |
576 | * 'httpFlushWrite()' - Flush data in write buffer. | |
577 | * | |
578 | * @since CUPS 1.2@ | |
579 | */ | |
580 | ||
581 | int /* O - Bytes written or -1 on error */ | |
568fa3fa | 582 | httpFlushWrite(http_t *http) /* I - Connection to server */ |
ef416fc2 | 583 | { |
584 | int bytes; /* Bytes written */ | |
585 | ||
586 | ||
587 | DEBUG_printf(("httpFlushWrite(http=%p)\n", http)); | |
588 | ||
589 | if (!http || !http->wused) | |
590 | return (0); | |
591 | ||
592 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
593 | bytes = http_write_chunk(http, http->wbuffer, http->wused); | |
594 | else | |
595 | bytes = http_write(http, http->wbuffer, http->wused); | |
596 | ||
597 | http->wused = 0; | |
598 | ||
599 | return (bytes); | |
600 | } | |
601 | ||
602 | ||
603 | /* | |
604 | * 'httpGet()' - Send a GET request to the server. | |
605 | */ | |
606 | ||
607 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 608 | httpGet(http_t *http, /* I - Connection to server */ |
ef416fc2 | 609 | const char *uri) /* I - URI to get */ |
610 | { | |
611 | return (http_send(http, HTTP_GET, uri)); | |
612 | } | |
613 | ||
614 | ||
355e94dc MS |
615 | /* |
616 | * 'httpGetAuthString()' - Get the current authorization string. | |
617 | * | |
618 | * The authorization string is set by cupsDoAuthentication() and | |
619 | * httpSetAuthString(). Use httpGetAuthString() to retrieve the | |
620 | * string to use with httpSetField() for the HTTP_FIELD_AUTHORIZATION | |
621 | * value. | |
622 | * | |
623 | * @since CUPS 1.3@ | |
624 | */ | |
625 | ||
626 | char * /* O - Authorization string */ | |
568fa3fa | 627 | httpGetAuthString(http_t *http) /* I - Connection to server */ |
355e94dc MS |
628 | { |
629 | if (http) | |
630 | return (http->authstring); | |
631 | else | |
632 | return (NULL); | |
633 | } | |
634 | ||
635 | ||
ecdc0628 | 636 | /* |
637 | * 'httpGetBlocking()' - Get the blocking/non-block state of a connection. | |
638 | * | |
639 | * @since CUPS 1.2@ | |
640 | */ | |
641 | ||
642 | int /* O - 1 if blocking, 0 if non-blocking */ | |
568fa3fa | 643 | httpGetBlocking(http_t *http) /* I - Connection to server */ |
ecdc0628 | 644 | { |
645 | return (http ? http->blocking : 0); | |
646 | } | |
647 | ||
648 | ||
649 | /* | |
650 | * 'httpGetCookie()' - Get any cookie data from the response. | |
757d2cad | 651 | * |
652 | * @since CUPS 1.1.19@ | |
ecdc0628 | 653 | */ |
654 | ||
655 | const char * /* O - Cookie data or NULL */ | |
656 | httpGetCookie(http_t *http) /* I - HTTP connecion */ | |
657 | { | |
658 | return (http ? http->cookie : NULL); | |
659 | } | |
660 | ||
661 | ||
662 | /* | |
663 | * 'httpGetFd()' - Get the file descriptor associated with a connection. | |
664 | * | |
665 | * @since CUPS 1.2@ | |
666 | */ | |
667 | ||
668 | int /* O - File descriptor or -1 if none */ | |
568fa3fa | 669 | httpGetFd(http_t *http) /* I - Connection to server */ |
ecdc0628 | 670 | { |
671 | return (http ? http->fd : -1); | |
672 | } | |
673 | ||
674 | ||
675 | /* | |
676 | * 'httpGetField()' - Get a field value from a request/response. | |
677 | */ | |
678 | ||
679 | const char * /* O - Field value */ | |
568fa3fa | 680 | httpGetField(http_t *http, /* I - Connection to server */ |
ecdc0628 | 681 | http_field_t field) /* I - Field to get */ |
682 | { | |
683 | if (!http || field <= HTTP_FIELD_UNKNOWN || field >= HTTP_FIELD_MAX) | |
684 | return (NULL); | |
f7deaa1a | 685 | else if (field == HTTP_FIELD_AUTHORIZATION && |
686 | http->field_authorization) | |
687 | { | |
688 | /* | |
689 | * Special case for WWW-Authenticate: as its contents can be | |
690 | * longer than HTTP_MAX_VALUE... | |
691 | */ | |
692 | ||
693 | return (http->field_authorization); | |
694 | } | |
ecdc0628 | 695 | else |
696 | return (http->fields[field]); | |
697 | } | |
698 | ||
699 | ||
700 | /* | |
701 | * 'httpGetLength()' - Get the amount of data remaining from the | |
702 | * content-length or transfer-encoding fields. | |
703 | * | |
704 | * This function is deprecated and will not return lengths larger than | |
705 | * 2^31 - 1; use httpGetLength2() instead. | |
706 | * | |
707 | * @deprecated@ | |
708 | */ | |
709 | ||
710 | int /* O - Content length */ | |
568fa3fa | 711 | httpGetLength(http_t *http) /* I - Connection to server */ |
ecdc0628 | 712 | { |
713 | /* | |
714 | * Get the read content length and return the 32-bit value. | |
715 | */ | |
716 | ||
717 | if (http) | |
718 | { | |
719 | httpGetLength2(http); | |
720 | ||
721 | return (http->_data_remaining); | |
722 | } | |
723 | else | |
724 | return (-1); | |
725 | } | |
726 | ||
727 | ||
728 | /* | |
729 | * 'httpGetLength2()' - Get the amount of data remaining from the | |
730 | * content-length or transfer-encoding fields. | |
731 | * | |
732 | * This function returns the complete content length, even for | |
733 | * content larger than 2^31 - 1. | |
734 | * | |
735 | * @since CUPS 1.2@ | |
736 | */ | |
737 | ||
738 | off_t /* O - Content length */ | |
568fa3fa | 739 | httpGetLength2(http_t *http) /* I - Connection to server */ |
ecdc0628 | 740 | { |
741 | DEBUG_printf(("httpGetLength2(http=%p), state=%d\n", http, http->state)); | |
742 | ||
743 | if (!http) | |
744 | return (-1); | |
745 | ||
746 | if (!strcasecmp(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked")) | |
747 | { | |
748 | DEBUG_puts("httpGetLength2: chunked request!"); | |
749 | ||
750 | http->data_encoding = HTTP_ENCODE_CHUNKED; | |
751 | http->data_remaining = 0; | |
752 | } | |
753 | else | |
754 | { | |
755 | http->data_encoding = HTTP_ENCODE_LENGTH; | |
756 | ||
757 | /* | |
758 | * The following is a hack for HTTP servers that don't send a | |
759 | * content-length or transfer-encoding field... | |
760 | * | |
761 | * If there is no content-length then the connection must close | |
762 | * after the transfer is complete... | |
763 | */ | |
764 | ||
b86bc4cf | 765 | if (!http->fields[HTTP_FIELD_CONTENT_LENGTH][0]) |
766 | { | |
767 | /* | |
768 | * Default content length is 0 for errors and 2^31-1 for other | |
769 | * successful requests... | |
770 | */ | |
771 | ||
772 | if (http->status >= HTTP_MULTIPLE_CHOICES) | |
773 | http->data_remaining = 0; | |
774 | else | |
775 | http->data_remaining = 2147483647; | |
776 | } | |
ecdc0628 | 777 | else |
778 | http->data_remaining = strtoll(http->fields[HTTP_FIELD_CONTENT_LENGTH], | |
779 | NULL, 10); | |
780 | ||
781 | DEBUG_printf(("httpGetLength2: content_length=" CUPS_LLFMT "\n", | |
782 | CUPS_LLCAST http->data_remaining)); | |
783 | } | |
784 | ||
785 | if (http->data_remaining <= INT_MAX) | |
786 | http->_data_remaining = (int)http->data_remaining; | |
787 | else | |
788 | http->_data_remaining = INT_MAX; | |
789 | ||
790 | return (http->data_remaining); | |
791 | } | |
792 | ||
793 | ||
794 | /* | |
795 | * 'httpGetStatus()' - Get the status of the last HTTP request. | |
796 | * | |
797 | * @since CUPS 1.2@ | |
798 | */ | |
799 | ||
800 | http_status_t /* O - HTTP status */ | |
568fa3fa | 801 | httpGetStatus(http_t *http) /* I - Connection to server */ |
ecdc0628 | 802 | { |
803 | return (http ? http->status : HTTP_ERROR); | |
804 | } | |
805 | ||
806 | ||
ef416fc2 | 807 | /* |
808 | * 'httpGetSubField()' - Get a sub-field value. | |
809 | * | |
810 | * @deprecated@ | |
811 | */ | |
812 | ||
813 | char * /* O - Value or NULL */ | |
568fa3fa | 814 | httpGetSubField(http_t *http, /* I - Connection to server */ |
ef416fc2 | 815 | http_field_t field, /* I - Field index */ |
816 | const char *name, /* I - Name of sub-field */ | |
817 | char *value) /* O - Value string */ | |
818 | { | |
819 | return (httpGetSubField2(http, field, name, value, HTTP_MAX_VALUE)); | |
820 | } | |
821 | ||
822 | ||
823 | /* | |
824 | * 'httpGetSubField2()' - Get a sub-field value. | |
825 | * | |
826 | * @since CUPS 1.2@ | |
827 | */ | |
828 | ||
829 | char * /* O - Value or NULL */ | |
568fa3fa | 830 | httpGetSubField2(http_t *http, /* I - Connection to server */ |
ef416fc2 | 831 | http_field_t field, /* I - Field index */ |
832 | const char *name, /* I - Name of sub-field */ | |
833 | char *value, /* O - Value string */ | |
834 | int valuelen) /* I - Size of value buffer */ | |
835 | { | |
836 | const char *fptr; /* Pointer into field */ | |
837 | char temp[HTTP_MAX_VALUE], /* Temporary buffer for name */ | |
838 | *ptr, /* Pointer into string buffer */ | |
839 | *end; /* End of value buffer */ | |
840 | ||
841 | DEBUG_printf(("httpGetSubField2(http=%p, field=%d, name=\"%s\", value=%p, valuelen=%d)\n", | |
842 | http, field, name, value, valuelen)); | |
843 | ||
844 | if (!http || !name || !value || valuelen < 2 || | |
ecdc0628 | 845 | field <= HTTP_FIELD_UNKNOWN || field >= HTTP_FIELD_MAX) |
ef416fc2 | 846 | return (NULL); |
847 | ||
848 | end = value + valuelen - 1; | |
849 | ||
850 | for (fptr = http->fields[field]; *fptr;) | |
851 | { | |
852 | /* | |
853 | * Skip leading whitespace... | |
854 | */ | |
855 | ||
856 | while (isspace(*fptr & 255)) | |
857 | fptr ++; | |
858 | ||
859 | if (*fptr == ',') | |
860 | { | |
861 | fptr ++; | |
862 | continue; | |
863 | } | |
864 | ||
865 | /* | |
866 | * Get the sub-field name... | |
867 | */ | |
868 | ||
869 | for (ptr = temp; | |
870 | *fptr && *fptr != '=' && !isspace(*fptr & 255) && | |
871 | ptr < (temp + sizeof(temp) - 1); | |
872 | *ptr++ = *fptr++); | |
873 | ||
874 | *ptr = '\0'; | |
875 | ||
876 | DEBUG_printf(("httpGetSubField: name=\"%s\"\n", temp)); | |
877 | ||
878 | /* | |
879 | * Skip trailing chars up to the '='... | |
880 | */ | |
881 | ||
882 | while (isspace(*fptr & 255)) | |
883 | fptr ++; | |
884 | ||
885 | if (!*fptr) | |
886 | break; | |
887 | ||
888 | if (*fptr != '=') | |
889 | continue; | |
890 | ||
891 | /* | |
892 | * Skip = and leading whitespace... | |
893 | */ | |
894 | ||
895 | fptr ++; | |
896 | ||
897 | while (isspace(*fptr & 255)) | |
898 | fptr ++; | |
899 | ||
900 | if (*fptr == '\"') | |
901 | { | |
902 | /* | |
903 | * Read quoted string... | |
904 | */ | |
905 | ||
906 | for (ptr = value, fptr ++; | |
907 | *fptr && *fptr != '\"' && ptr < end; | |
908 | *ptr++ = *fptr++); | |
909 | ||
910 | *ptr = '\0'; | |
911 | ||
912 | while (*fptr && *fptr != '\"') | |
913 | fptr ++; | |
914 | ||
915 | if (*fptr) | |
916 | fptr ++; | |
917 | } | |
918 | else | |
919 | { | |
920 | /* | |
921 | * Read unquoted string... | |
922 | */ | |
923 | ||
924 | for (ptr = value; | |
925 | *fptr && !isspace(*fptr & 255) && *fptr != ',' && ptr < end; | |
926 | *ptr++ = *fptr++); | |
927 | ||
928 | *ptr = '\0'; | |
929 | ||
930 | while (*fptr && !isspace(*fptr & 255) && *fptr != ',') | |
931 | fptr ++; | |
932 | } | |
933 | ||
934 | DEBUG_printf(("httpGetSubField: value=\"%s\"\n", value)); | |
935 | ||
936 | /* | |
937 | * See if this is the one... | |
938 | */ | |
939 | ||
940 | if (!strcmp(name, temp)) | |
941 | return (value); | |
942 | } | |
943 | ||
944 | value[0] = '\0'; | |
945 | ||
946 | return (NULL); | |
947 | } | |
948 | ||
949 | ||
ef416fc2 | 950 | /* |
951 | * 'httpGets()' - Get a line of text from a HTTP connection. | |
952 | */ | |
953 | ||
954 | char * /* O - Line or NULL */ | |
955 | httpGets(char *line, /* I - Line to read into */ | |
956 | int length, /* I - Max length of buffer */ | |
568fa3fa | 957 | http_t *http) /* I - Connection to server */ |
ef416fc2 | 958 | { |
959 | char *lineptr, /* Pointer into line */ | |
960 | *lineend, /* End of line */ | |
961 | *bufptr, /* Pointer into input buffer */ | |
962 | *bufend; /* Pointer to end of buffer */ | |
963 | int bytes, /* Number of bytes read */ | |
964 | eol; /* End-of-line? */ | |
965 | ||
966 | ||
967 | DEBUG_printf(("httpGets(line=%p, length=%d, http=%p)\n", line, length, http)); | |
968 | ||
969 | if (http == NULL || line == NULL) | |
970 | return (NULL); | |
971 | ||
972 | /* | |
973 | * Read a line from the buffer... | |
974 | */ | |
975 | ||
976 | lineptr = line; | |
977 | lineend = line + length - 1; | |
978 | eol = 0; | |
979 | ||
980 | while (lineptr < lineend) | |
981 | { | |
982 | /* | |
983 | * Pre-load the buffer as needed... | |
984 | */ | |
985 | ||
986 | #ifdef WIN32 | |
987 | WSASetLastError(0); | |
988 | #else | |
989 | errno = 0; | |
990 | #endif /* WIN32 */ | |
991 | ||
992 | while (http->used == 0) | |
993 | { | |
994 | /* | |
995 | * No newline; see if there is more data to be read... | |
996 | */ | |
997 | ||
411affcf | 998 | if (!http->blocking && !http_wait(http, 10000, 1)) |
89d46774 | 999 | { |
1000 | DEBUG_puts("httpGets: Timed out!"); | |
b86bc4cf | 1001 | #ifdef WIN32 |
1002 | http->error = WSAETIMEDOUT; | |
1003 | #else | |
89d46774 | 1004 | http->error = ETIMEDOUT; |
b86bc4cf | 1005 | #endif /* WIN32 */ |
ef416fc2 | 1006 | return (NULL); |
89d46774 | 1007 | } |
ef416fc2 | 1008 | |
1009 | #ifdef HAVE_SSL | |
1010 | if (http->tls) | |
1011 | bytes = http_read_ssl(http, http->buffer + http->used, | |
1012 | HTTP_MAX_BUFFER - http->used); | |
1013 | else | |
1014 | #endif /* HAVE_SSL */ | |
1015 | bytes = recv(http->fd, http->buffer + http->used, | |
1016 | HTTP_MAX_BUFFER - http->used, 0); | |
1017 | ||
1018 | DEBUG_printf(("httpGets: read %d bytes...\n", bytes)); | |
1019 | ||
1020 | if (bytes < 0) | |
1021 | { | |
1022 | /* | |
1023 | * Nope, can't get a line this time... | |
1024 | */ | |
1025 | ||
1026 | #ifdef WIN32 | |
1027 | if (WSAGetLastError() != http->error) | |
1028 | { | |
1029 | http->error = WSAGetLastError(); | |
1030 | continue; | |
1031 | } | |
1032 | ||
1033 | DEBUG_printf(("httpGets: recv() error %d!\n", WSAGetLastError())); | |
1034 | #else | |
1035 | DEBUG_printf(("httpGets: recv() error %d!\n", errno)); | |
1036 | ||
1037 | if (errno == EINTR) | |
1038 | continue; | |
1039 | else if (errno != http->error) | |
1040 | { | |
1041 | http->error = errno; | |
1042 | continue; | |
1043 | } | |
1044 | #endif /* WIN32 */ | |
1045 | ||
1046 | return (NULL); | |
1047 | } | |
1048 | else if (bytes == 0) | |
1049 | { | |
1050 | http->error = EPIPE; | |
1051 | ||
1052 | return (NULL); | |
1053 | } | |
1054 | ||
1055 | /* | |
1056 | * Yup, update the amount used... | |
1057 | */ | |
1058 | ||
1059 | http->used += bytes; | |
1060 | } | |
1061 | ||
1062 | /* | |
1063 | * Now copy as much of the current line as possible... | |
1064 | */ | |
1065 | ||
1066 | for (bufptr = http->buffer, bufend = http->buffer + http->used; | |
1067 | lineptr < lineend && bufptr < bufend;) | |
1068 | { | |
1069 | if (*bufptr == 0x0a) | |
1070 | { | |
1071 | eol = 1; | |
1072 | bufptr ++; | |
1073 | break; | |
1074 | } | |
1075 | else if (*bufptr == 0x0d) | |
1076 | bufptr ++; | |
1077 | else | |
1078 | *lineptr++ = *bufptr++; | |
1079 | } | |
1080 | ||
b86bc4cf | 1081 | http->used -= (int)(bufptr - http->buffer); |
ef416fc2 | 1082 | if (http->used > 0) |
1083 | memmove(http->buffer, bufptr, http->used); | |
1084 | ||
1085 | if (eol) | |
1086 | { | |
1087 | /* | |
1088 | * End of line... | |
1089 | */ | |
1090 | ||
1091 | http->activity = time(NULL); | |
1092 | ||
1093 | *lineptr = '\0'; | |
1094 | ||
1095 | DEBUG_printf(("httpGets: Returning \"%s\"\n", line)); | |
1096 | ||
1097 | return (line); | |
1098 | } | |
1099 | } | |
1100 | ||
1101 | DEBUG_puts("httpGets: No new line available!"); | |
1102 | ||
1103 | return (NULL); | |
1104 | } | |
1105 | ||
1106 | ||
1107 | /* | |
1108 | * 'httpHead()' - Send a HEAD request to the server. | |
1109 | */ | |
1110 | ||
1111 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 1112 | httpHead(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1113 | const char *uri) /* I - URI for head */ |
1114 | { | |
1115 | return (http_send(http, HTTP_HEAD, uri)); | |
1116 | } | |
1117 | ||
1118 | ||
1119 | /* | |
1120 | * 'httpInitialize()' - Initialize the HTTP interface library and set the | |
1121 | * default HTTP proxy (if any). | |
1122 | */ | |
1123 | ||
1124 | void | |
1125 | httpInitialize(void) | |
1126 | { | |
1127 | #ifdef HAVE_LIBSSL | |
1128 | # ifndef WIN32 | |
1129 | struct timeval curtime; /* Current time in microseconds */ | |
1130 | # endif /* !WIN32 */ | |
1131 | int i; /* Looping var */ | |
1132 | unsigned char data[1024]; /* Seed data */ | |
1133 | #endif /* HAVE_LIBSSL */ | |
1134 | ||
1135 | #ifdef WIN32 | |
1136 | WSADATA winsockdata; /* WinSock data */ | |
1137 | static int initialized = 0; /* Has WinSock been initialized? */ | |
1138 | ||
1139 | ||
1140 | if (!initialized) | |
1141 | WSAStartup(MAKEWORD(1,1), &winsockdata); | |
fa73b229 | 1142 | #elif !defined(SO_NOSIGPIPE) |
ef416fc2 | 1143 | /* |
1144 | * Ignore SIGPIPE signals... | |
1145 | */ | |
1146 | ||
fa73b229 | 1147 | # ifdef HAVE_SIGSET |
1148 | sigset(SIGPIPE, SIG_IGN); | |
1149 | # elif defined(HAVE_SIGACTION) | |
1150 | struct sigaction action; /* POSIX sigaction data */ | |
1151 | ||
1152 | ||
ef416fc2 | 1153 | memset(&action, 0, sizeof(action)); |
1154 | action.sa_handler = SIG_IGN; | |
1155 | sigaction(SIGPIPE, &action, NULL); | |
fa73b229 | 1156 | # else |
ef416fc2 | 1157 | signal(SIGPIPE, SIG_IGN); |
fa73b229 | 1158 | # endif /* !SO_NOSIGPIPE */ |
ef416fc2 | 1159 | #endif /* WIN32 */ |
1160 | ||
1161 | #ifdef HAVE_GNUTLS | |
1162 | gnutls_global_init(); | |
1163 | #endif /* HAVE_GNUTLS */ | |
1164 | ||
1165 | #ifdef HAVE_LIBSSL | |
1166 | SSL_load_error_strings(); | |
1167 | SSL_library_init(); | |
1168 | ||
1169 | /* | |
1170 | * Using the current time is a dubious random seed, but on some systems | |
1171 | * it is the best we can do (on others, this seed isn't even used...) | |
1172 | */ | |
1173 | ||
1174 | #ifdef WIN32 | |
1175 | #else | |
1176 | gettimeofday(&curtime, NULL); | |
1177 | srand(curtime.tv_sec + curtime.tv_usec); | |
1178 | #endif /* WIN32 */ | |
1179 | ||
1180 | for (i = 0; i < sizeof(data); i ++) | |
1181 | data[i] = rand(); /* Yes, this is a poor source of random data... */ | |
1182 | ||
1183 | RAND_seed(&data, sizeof(data)); | |
1184 | #endif /* HAVE_LIBSSL */ | |
1185 | } | |
1186 | ||
1187 | ||
1188 | /* | |
1189 | * 'httpOptions()' - Send an OPTIONS request to the server. | |
1190 | */ | |
1191 | ||
1192 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 1193 | httpOptions(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1194 | const char *uri) /* I - URI for options */ |
1195 | { | |
1196 | return (http_send(http, HTTP_OPTIONS, uri)); | |
1197 | } | |
1198 | ||
1199 | ||
1200 | /* | |
1201 | * 'httpPost()' - Send a POST request to the server. | |
1202 | */ | |
1203 | ||
1204 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 1205 | httpPost(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1206 | const char *uri) /* I - URI for post */ |
1207 | { | |
1208 | return (http_send(http, HTTP_POST, uri)); | |
1209 | } | |
1210 | ||
1211 | ||
1212 | /* | |
1213 | * 'httpPrintf()' - Print a formatted string to a HTTP connection. | |
ecdc0628 | 1214 | * |
1215 | * @private@ | |
ef416fc2 | 1216 | */ |
1217 | ||
1218 | int /* O - Number of bytes written */ | |
568fa3fa | 1219 | httpPrintf(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1220 | const char *format, /* I - printf-style format string */ |
1221 | ...) /* I - Additional args as needed */ | |
1222 | { | |
1223 | int bytes; /* Number of bytes to write */ | |
1224 | char buf[16384]; /* Buffer for formatted string */ | |
1225 | va_list ap; /* Variable argument pointer */ | |
1226 | ||
1227 | ||
1228 | DEBUG_printf(("httpPrintf(http=%p, format=\"%s\", ...)\n", http, format)); | |
1229 | ||
1230 | va_start(ap, format); | |
1231 | bytes = vsnprintf(buf, sizeof(buf), format, ap); | |
1232 | va_end(ap); | |
1233 | ||
1234 | DEBUG_printf(("httpPrintf: %s", buf)); | |
1235 | ||
d09495fa | 1236 | if (http->data_encoding == HTTP_ENCODE_FIELDS) |
1237 | return (httpWrite2(http, buf, bytes)); | |
1238 | else | |
ef416fc2 | 1239 | { |
d09495fa | 1240 | if (http->wused) |
1241 | { | |
1242 | DEBUG_puts(" flushing existing data..."); | |
ef416fc2 | 1243 | |
d09495fa | 1244 | if (httpFlushWrite(http) < 0) |
1245 | return (-1); | |
1246 | } | |
ef416fc2 | 1247 | |
d09495fa | 1248 | return (http_write(http, buf, bytes)); |
1249 | } | |
ef416fc2 | 1250 | } |
1251 | ||
1252 | ||
1253 | /* | |
1254 | * 'httpPut()' - Send a PUT request to the server. | |
1255 | */ | |
1256 | ||
1257 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 1258 | httpPut(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1259 | const char *uri) /* I - URI to put */ |
1260 | { | |
1261 | return (http_send(http, HTTP_PUT, uri)); | |
1262 | } | |
1263 | ||
1264 | ||
1265 | /* | |
1266 | * 'httpRead()' - Read data from a HTTP connection. | |
a4d04587 | 1267 | * |
1268 | * This function is deprecated. Use the httpRead2() function which can | |
1269 | * read more than 2GB of data. | |
1270 | * | |
1271 | * @deprecated@ | |
ef416fc2 | 1272 | */ |
1273 | ||
1274 | int /* O - Number of bytes read */ | |
568fa3fa | 1275 | httpRead(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1276 | char *buffer, /* I - Buffer for data */ |
1277 | int length) /* I - Maximum number of bytes */ | |
1278 | { | |
a4d04587 | 1279 | return ((int)httpRead2(http, buffer, length)); |
1280 | } | |
1281 | ||
1282 | ||
1283 | /* | |
1284 | * 'httpRead2()' - Read data from a HTTP connection. | |
ecdc0628 | 1285 | * |
1286 | * @since CUPS 1.2@ | |
a4d04587 | 1287 | */ |
1288 | ||
1289 | ssize_t /* O - Number of bytes read */ | |
568fa3fa | 1290 | httpRead2(http_t *http, /* I - Connection to server */ |
a4d04587 | 1291 | char *buffer, /* I - Buffer for data */ |
1292 | size_t length) /* I - Maximum number of bytes */ | |
1293 | { | |
1294 | ssize_t bytes; /* Bytes read */ | |
ef416fc2 | 1295 | char len[32]; /* Length string */ |
1296 | ||
1297 | ||
ae71f5de | 1298 | DEBUG_printf(("httpRead2(http=%p, buffer=%p, length=" CUPS_LLFMT ")\n", |
a603edef | 1299 | http, buffer, CUPS_LLCAST length)); |
ef416fc2 | 1300 | |
1301 | if (http == NULL || buffer == NULL) | |
1302 | return (-1); | |
1303 | ||
1304 | http->activity = time(NULL); | |
1305 | ||
1306 | if (length <= 0) | |
1307 | return (0); | |
1308 | ||
1309 | if (http->data_encoding == HTTP_ENCODE_CHUNKED && | |
1310 | http->data_remaining <= 0) | |
1311 | { | |
a4d04587 | 1312 | DEBUG_puts("httpRead2: Getting chunk length..."); |
ef416fc2 | 1313 | |
1314 | if (httpGets(len, sizeof(len), http) == NULL) | |
1315 | { | |
a4d04587 | 1316 | DEBUG_puts("httpRead2: Could not get length!"); |
ef416fc2 | 1317 | return (0); |
1318 | } | |
1319 | ||
1320 | http->data_remaining = strtoll(len, NULL, 16); | |
1321 | if (http->data_remaining < 0) | |
1322 | { | |
a4d04587 | 1323 | DEBUG_puts("httpRead2: Negative chunk length!"); |
ef416fc2 | 1324 | return (0); |
1325 | } | |
1326 | } | |
1327 | ||
a4d04587 | 1328 | DEBUG_printf(("httpRead2: data_remaining=" CUPS_LLFMT "\n", |
ef416fc2 | 1329 | CUPS_LLCAST http->data_remaining)); |
1330 | ||
1331 | if (http->data_remaining <= 0) | |
1332 | { | |
1333 | /* | |
1334 | * A zero-length chunk ends a transfer; unless we are reading POST | |
1335 | * data, go idle... | |
1336 | */ | |
1337 | ||
1338 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
1339 | httpGets(len, sizeof(len), http); | |
1340 | ||
1341 | if (http->state == HTTP_POST_RECV) | |
1342 | http->state ++; | |
1343 | else | |
1344 | http->state = HTTP_WAITING; | |
1345 | ||
1346 | /* | |
1347 | * Prevent future reads for this request... | |
1348 | */ | |
1349 | ||
1350 | http->data_encoding = HTTP_ENCODE_LENGTH; | |
1351 | ||
1352 | return (0); | |
1353 | } | |
b86bc4cf | 1354 | else if (length > (size_t)http->data_remaining) |
1355 | length = (size_t)http->data_remaining; | |
ef416fc2 | 1356 | |
1357 | if (http->used == 0 && length <= 256) | |
1358 | { | |
1359 | /* | |
1360 | * Buffer small reads for better performance... | |
1361 | */ | |
1362 | ||
ed486911 | 1363 | if (!http->blocking && !httpWait(http, 10000)) |
ef416fc2 | 1364 | return (0); |
1365 | ||
1366 | if (http->data_remaining > sizeof(http->buffer)) | |
1367 | bytes = sizeof(http->buffer); | |
1368 | else | |
1369 | bytes = http->data_remaining; | |
1370 | ||
1371 | #ifdef HAVE_SSL | |
1372 | if (http->tls) | |
1373 | bytes = http_read_ssl(http, http->buffer, bytes); | |
1374 | else | |
1375 | #endif /* HAVE_SSL */ | |
1376 | { | |
a4d04587 | 1377 | DEBUG_printf(("httpRead2: reading %d bytes from socket into buffer...\n", |
a603edef | 1378 | (int)bytes)); |
ef416fc2 | 1379 | |
1380 | bytes = recv(http->fd, http->buffer, bytes, 0); | |
1381 | ||
a4d04587 | 1382 | DEBUG_printf(("httpRead2: read %d bytes from socket into buffer...\n", |
a603edef | 1383 | (int)bytes)); |
ef416fc2 | 1384 | } |
1385 | ||
1386 | if (bytes > 0) | |
1387 | http->used = bytes; | |
1388 | else if (bytes < 0) | |
1389 | { | |
1390 | #ifdef WIN32 | |
1391 | http->error = WSAGetLastError(); | |
1392 | return (-1); | |
1393 | #else | |
1394 | if (errno != EINTR) | |
1395 | { | |
1396 | http->error = errno; | |
1397 | return (-1); | |
1398 | } | |
1399 | #endif /* WIN32 */ | |
1400 | } | |
1401 | else | |
1402 | { | |
1403 | http->error = EPIPE; | |
1404 | return (0); | |
1405 | } | |
1406 | } | |
1407 | ||
1408 | if (http->used > 0) | |
1409 | { | |
b86bc4cf | 1410 | if (length > (size_t)http->used) |
1411 | length = (size_t)http->used; | |
ef416fc2 | 1412 | |
b86bc4cf | 1413 | bytes = (ssize_t)length; |
ef416fc2 | 1414 | |
a603edef MS |
1415 | DEBUG_printf(("httpRead2: grabbing %d bytes from input buffer...\n", |
1416 | (int)bytes)); | |
ef416fc2 | 1417 | |
1418 | memcpy(buffer, http->buffer, length); | |
b86bc4cf | 1419 | http->used -= (int)length; |
ef416fc2 | 1420 | |
1421 | if (http->used > 0) | |
1422 | memmove(http->buffer, http->buffer + length, http->used); | |
1423 | } | |
1424 | #ifdef HAVE_SSL | |
1425 | else if (http->tls) | |
1426 | { | |
ed486911 | 1427 | if (!http->blocking && !httpWait(http, 10000)) |
ef416fc2 | 1428 | return (0); |
1429 | ||
b86bc4cf | 1430 | bytes = (ssize_t)http_read_ssl(http, buffer, (int)length); |
ef416fc2 | 1431 | } |
1432 | #endif /* HAVE_SSL */ | |
1433 | else | |
1434 | { | |
ed486911 | 1435 | if (!http->blocking && !httpWait(http, 10000)) |
ef416fc2 | 1436 | return (0); |
1437 | ||
a603edef MS |
1438 | DEBUG_printf(("httpRead2: reading " CUPS_LLFMT " bytes from socket...\n", |
1439 | CUPS_LLCAST length)); | |
ef416fc2 | 1440 | |
b86bc4cf | 1441 | #ifdef WIN32 |
1442 | bytes = (ssize_t)recv(http->fd, buffer, (int)length, 0); | |
1443 | #else | |
ef416fc2 | 1444 | while ((bytes = recv(http->fd, buffer, length, 0)) < 0) |
1445 | if (errno != EINTR) | |
1446 | break; | |
b86bc4cf | 1447 | #endif /* WIN32 */ |
ef416fc2 | 1448 | |
a603edef MS |
1449 | DEBUG_printf(("httpRead2: read " CUPS_LLFMT " bytes from socket...\n", |
1450 | CUPS_LLCAST bytes)); | |
ef416fc2 | 1451 | } |
1452 | ||
1453 | if (bytes > 0) | |
1454 | { | |
1455 | http->data_remaining -= bytes; | |
1456 | ||
1457 | if (http->data_remaining <= INT_MAX) | |
1458 | http->_data_remaining = (int)http->data_remaining; | |
1459 | else | |
1460 | http->_data_remaining = INT_MAX; | |
1461 | } | |
1462 | else if (bytes < 0) | |
1463 | { | |
1464 | #ifdef WIN32 | |
1465 | http->error = WSAGetLastError(); | |
1466 | #else | |
1467 | if (errno == EINTR) | |
1468 | bytes = 0; | |
1469 | else | |
1470 | http->error = errno; | |
1471 | #endif /* WIN32 */ | |
1472 | } | |
1473 | else | |
1474 | { | |
1475 | http->error = EPIPE; | |
1476 | return (0); | |
1477 | } | |
1478 | ||
1479 | if (http->data_remaining == 0) | |
1480 | { | |
1481 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
1482 | httpGets(len, sizeof(len), http); | |
1483 | ||
1484 | if (http->data_encoding != HTTP_ENCODE_CHUNKED) | |
1485 | { | |
1486 | if (http->state == HTTP_POST_RECV) | |
1487 | http->state ++; | |
1488 | else | |
1489 | http->state = HTTP_WAITING; | |
1490 | } | |
1491 | } | |
1492 | ||
1493 | #ifdef DEBUG | |
ae71f5de | 1494 | http_debug_hex("httpRead2", buffer, (int)bytes); |
ef416fc2 | 1495 | #endif /* DEBUG */ |
1496 | ||
1497 | return (bytes); | |
1498 | } | |
1499 | ||
1500 | ||
1501 | #if defined(HAVE_SSL) && defined(HAVE_CDSASSL) | |
1502 | /* | |
411affcf | 1503 | * '_httpReadCDSA()' - Read function for the CDSA library. |
ef416fc2 | 1504 | */ |
1505 | ||
1506 | OSStatus /* O - -1 on error, 0 on success */ | |
1507 | _httpReadCDSA( | |
1508 | SSLConnectionRef connection, /* I - SSL/TLS connection */ | |
1509 | void *data, /* I - Data buffer */ | |
1510 | size_t *dataLength) /* IO - Number of bytes */ | |
1511 | { | |
411affcf | 1512 | OSStatus result; /* Return value */ |
1513 | ssize_t bytes; /* Number of bytes read */ | |
1514 | http_t *http; /* HTTP connection */ | |
1515 | ||
1516 | ||
1517 | http = (http_t *)connection; | |
e53920b9 | 1518 | |
411affcf | 1519 | if (!http->blocking) |
1520 | { | |
1521 | /* | |
1522 | * Make sure we have data before we read... | |
1523 | */ | |
e53920b9 | 1524 | |
411affcf | 1525 | if (!http_wait(http, 10000, 0)) |
1526 | { | |
1527 | http->error = ETIMEDOUT; | |
1528 | return (-1); | |
1529 | } | |
1530 | } | |
ef416fc2 | 1531 | |
b423cd4c | 1532 | do |
411affcf | 1533 | { |
1534 | bytes = recv(http->fd, data, *dataLength, 0); | |
1535 | } | |
b423cd4c | 1536 | while (bytes == -1 && errno == EINTR); |
fa73b229 | 1537 | |
b423cd4c | 1538 | if (bytes == *dataLength) |
411affcf | 1539 | { |
b423cd4c | 1540 | result = 0; |
411affcf | 1541 | } |
b423cd4c | 1542 | else if (bytes > 0) |
1543 | { | |
1544 | *dataLength = bytes; | |
1545 | result = errSSLWouldBlock; | |
1546 | } | |
1547 | else | |
1548 | { | |
1549 | *dataLength = 0; | |
fa73b229 | 1550 | |
1551 | if (bytes == 0) | |
ed486911 | 1552 | result = errSSLClosedGraceful; |
b423cd4c | 1553 | else if (errno == EAGAIN) |
1554 | result = errSSLWouldBlock; | |
b423cd4c | 1555 | else |
ed486911 | 1556 | result = errSSLClosedAbort; |
ef416fc2 | 1557 | } |
b423cd4c | 1558 | |
411affcf | 1559 | return (result); |
ef416fc2 | 1560 | } |
1561 | #endif /* HAVE_SSL && HAVE_CDSASSL */ | |
1562 | ||
1563 | ||
411affcf | 1564 | #if defined(HAVE_SSL) && defined(HAVE_GNUTLS) |
1565 | /* | |
1566 | * '_httpReadGNUTLS()' - Read function for the GNU TLS library. | |
1567 | */ | |
1568 | ||
1569 | ssize_t /* O - Number of bytes read or -1 on error */ | |
1570 | _httpReadGNUTLS( | |
568fa3fa | 1571 | gnutls_transport_ptr ptr, /* I - Connection to server */ |
411affcf | 1572 | void *data, /* I - Buffer */ |
1573 | size_t length) /* I - Number of bytes to read */ | |
1574 | { | |
1575 | http_t *http; /* HTTP connection */ | |
1576 | ||
1577 | ||
1578 | http = (http_t *)ptr; | |
1579 | ||
1580 | if (!http->blocking) | |
1581 | { | |
1582 | /* | |
1583 | * Make sure we have data before we read... | |
1584 | */ | |
1585 | ||
1586 | if (!http_wait(http, 10000, 0)) | |
1587 | { | |
1588 | http->error = ETIMEDOUT; | |
1589 | return (-1); | |
1590 | } | |
1591 | } | |
1592 | ||
1593 | return (recv(http->fd, data, length, 0)); | |
1594 | } | |
1595 | #endif /* HAVE_SSL && HAVE_GNUTLS */ | |
1596 | ||
1597 | ||
ef416fc2 | 1598 | /* |
ecdc0628 | 1599 | * 'httpReconnect()' - Reconnect to a HTTP server. |
ef416fc2 | 1600 | */ |
1601 | ||
1602 | int /* O - 0 on success, non-zero on failure */ | |
568fa3fa | 1603 | httpReconnect(http_t *http) /* I - Connection to server */ |
ef416fc2 | 1604 | { |
1605 | http_addrlist_t *addr; /* Connected address */ | |
1606 | ||
1607 | ||
1608 | DEBUG_printf(("httpReconnect(http=%p)\n", http)); | |
1609 | ||
1610 | if (!http) | |
1611 | return (-1); | |
1612 | ||
1613 | #ifdef HAVE_SSL | |
1614 | if (http->tls) | |
1615 | http_shutdown_ssl(http); | |
1616 | #endif /* HAVE_SSL */ | |
1617 | ||
1618 | /* | |
1619 | * Close any previously open socket... | |
1620 | */ | |
1621 | ||
1622 | if (http->fd >= 0) | |
bd7854cb | 1623 | { |
ef416fc2 | 1624 | #ifdef WIN32 |
1625 | closesocket(http->fd); | |
1626 | #else | |
1627 | close(http->fd); | |
1628 | #endif /* WIN32 */ | |
1629 | ||
bd7854cb | 1630 | http->fd = -1; |
1631 | } | |
1632 | ||
ef416fc2 | 1633 | /* |
1634 | * Connect to the server... | |
1635 | */ | |
1636 | ||
1637 | if ((addr = httpAddrConnect(http->addrlist, &(http->fd))) == NULL) | |
1638 | { | |
1639 | /* | |
1640 | * Unable to connect... | |
1641 | */ | |
1642 | ||
1643 | #ifdef WIN32 | |
1644 | http->error = WSAGetLastError(); | |
1645 | #else | |
1646 | http->error = errno; | |
1647 | #endif /* WIN32 */ | |
1648 | http->status = HTTP_ERROR; | |
1649 | ||
1650 | return (-1); | |
1651 | } | |
1652 | ||
1653 | http->hostaddr = &(addr->addr); | |
1654 | http->error = 0; | |
1655 | http->status = HTTP_CONTINUE; | |
1656 | ||
1657 | #ifdef HAVE_SSL | |
1658 | if (http->encryption == HTTP_ENCRYPT_ALWAYS) | |
1659 | { | |
1660 | /* | |
1661 | * Always do encryption via SSL. | |
1662 | */ | |
1663 | ||
1664 | if (http_setup_ssl(http) != 0) | |
1665 | { | |
f7deaa1a | 1666 | # ifdef WIN32 |
ef416fc2 | 1667 | closesocket(http->fd); |
f7deaa1a | 1668 | # else |
ef416fc2 | 1669 | close(http->fd); |
f7deaa1a | 1670 | # endif /* WIN32 */ |
ef416fc2 | 1671 | |
1672 | return (-1); | |
1673 | } | |
1674 | } | |
1675 | else if (http->encryption == HTTP_ENCRYPT_REQUIRED) | |
1676 | return (http_upgrade(http)); | |
1677 | #endif /* HAVE_SSL */ | |
1678 | ||
1679 | return (0); | |
1680 | } | |
1681 | ||
1682 | ||
355e94dc MS |
1683 | /* |
1684 | * 'httpSetAuthString()' - Set the current authorization string. | |
1685 | * | |
1686 | * This function just stores a copy of the current authorization string in | |
1687 | * the HTTP connection object. You must still call httpSetField() to set | |
1688 | * HTTP_FIELD_AUTHORIZATION prior to issuing a HTTP request using httpGet(), | |
1689 | * httpHead(), httpOptions(), httpPost, or httpPut(). | |
1690 | * | |
1691 | * @since CUPS 1.3@ | |
1692 | */ | |
1693 | ||
1694 | void | |
568fa3fa | 1695 | httpSetAuthString(http_t *http, /* I - Connection to server */ |
355e94dc MS |
1696 | const char *scheme, /* I - Auth scheme (NULL to clear it) */ |
1697 | const char *data) /* I - Auth data (NULL for none) */ | |
1698 | { | |
1699 | /* | |
1700 | * Range check input... | |
1701 | */ | |
1702 | ||
1703 | if (!http) | |
1704 | return; | |
1705 | ||
1706 | if (http->authstring && http->authstring != http->_authstring) | |
1707 | free(http->authstring); | |
1708 | ||
1709 | http->authstring = http->_authstring; | |
1710 | ||
1711 | if (scheme) | |
1712 | { | |
1713 | /* | |
1714 | * Set the current authorization string... | |
1715 | */ | |
1716 | ||
1717 | int len = (int)strlen(scheme) + (data ? (int)strlen(data) + 1 : 0) + 1; | |
91c84a35 | 1718 | char *temp; |
355e94dc MS |
1719 | |
1720 | if (len > (int)sizeof(http->_authstring)) | |
91c84a35 MS |
1721 | { |
1722 | if ((temp = malloc(len)) == NULL) | |
1723 | len = sizeof(http->_authstring); | |
1724 | else | |
1725 | http->authstring = temp; | |
1726 | } | |
355e94dc MS |
1727 | |
1728 | if (data) | |
1729 | snprintf(http->authstring, len, "%s %s", scheme, data); | |
1730 | else | |
1731 | strlcpy(http->authstring, scheme, len); | |
1732 | } | |
1733 | else | |
1734 | { | |
1735 | /* | |
1736 | * Clear the current authorization string... | |
1737 | */ | |
1738 | ||
1739 | http->_authstring[0] = '\0'; | |
1740 | } | |
1741 | } | |
1742 | ||
1743 | ||
ef416fc2 | 1744 | /* |
1745 | * 'httpSetCookie()' - Set the cookie value(s)... | |
1746 | * | |
1747 | * @since CUPS 1.1.19@ | |
1748 | */ | |
1749 | ||
1750 | void | |
1751 | httpSetCookie(http_t *http, /* I - Connection */ | |
1752 | const char *cookie) /* I - Cookie string */ | |
1753 | { | |
1754 | if (!http) | |
1755 | return; | |
1756 | ||
1757 | if (http->cookie) | |
1758 | free(http->cookie); | |
1759 | ||
1760 | if (cookie) | |
1761 | http->cookie = strdup(cookie); | |
1762 | else | |
1763 | http->cookie = NULL; | |
1764 | } | |
1765 | ||
1766 | ||
b423cd4c | 1767 | /* |
1768 | * 'httpSetExpect()' - Set the Expect: header in a request. | |
1769 | * | |
1770 | * Currently only HTTP_CONTINUE is supported for the "expect" argument. | |
1771 | * | |
1772 | * @since CUPS 1.2@ | |
1773 | */ | |
1774 | ||
1775 | void | |
568fa3fa | 1776 | httpSetExpect(http_t *http, /* I - Connection to server */ |
b423cd4c | 1777 | http_status_t expect) /* I - HTTP status to expect (HTTP_CONTINUE) */ |
1778 | { | |
1779 | if (http) | |
1780 | http->expect = expect; | |
1781 | } | |
1782 | ||
1783 | ||
ef416fc2 | 1784 | /* |
1785 | * 'httpSetField()' - Set the value of an HTTP header. | |
1786 | */ | |
1787 | ||
1788 | void | |
568fa3fa | 1789 | httpSetField(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1790 | http_field_t field, /* I - Field index */ |
1791 | const char *value) /* I - Value */ | |
1792 | { | |
1793 | if (http == NULL || | |
1794 | field < HTTP_FIELD_ACCEPT_LANGUAGE || | |
1795 | field > HTTP_FIELD_WWW_AUTHENTICATE || | |
1796 | value == NULL) | |
1797 | return; | |
1798 | ||
1799 | strlcpy(http->fields[field], value, HTTP_MAX_VALUE); | |
f7deaa1a | 1800 | |
1801 | /* | |
1802 | * Special case for Authorization: as its contents can be | |
1803 | * longer than HTTP_MAX_VALUE | |
1804 | */ | |
1805 | ||
1806 | if (field == HTTP_FIELD_AUTHORIZATION) | |
1807 | { | |
1808 | if (http->field_authorization) | |
1809 | free(http->field_authorization); | |
1810 | ||
1811 | http->field_authorization = strdup(value); | |
1812 | } | |
ef416fc2 | 1813 | } |
1814 | ||
1815 | ||
1816 | /* | |
1817 | * 'httpSetLength()' - Set the content-length and content-encoding. | |
1818 | * | |
1819 | * @since CUPS 1.2@ | |
1820 | */ | |
1821 | ||
1822 | void | |
568fa3fa | 1823 | httpSetLength(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1824 | size_t length) /* I - Length (0 for chunked) */ |
1825 | { | |
1826 | if (!http) | |
1827 | return; | |
1828 | ||
1829 | if (!length) | |
1830 | { | |
1831 | strcpy(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked"); | |
1832 | http->fields[HTTP_FIELD_CONTENT_LENGTH][0] = '\0'; | |
1833 | } | |
1834 | else | |
1835 | { | |
1836 | http->fields[HTTP_FIELD_TRANSFER_ENCODING][0] = '\0'; | |
1837 | snprintf(http->fields[HTTP_FIELD_CONTENT_LENGTH], HTTP_MAX_VALUE, | |
1838 | CUPS_LLFMT, CUPS_LLCAST length); | |
1839 | } | |
1840 | } | |
1841 | ||
1842 | ||
1843 | /* | |
1844 | * 'httpTrace()' - Send an TRACE request to the server. | |
1845 | */ | |
1846 | ||
1847 | int /* O - Status of call (0 = success) */ | |
568fa3fa | 1848 | httpTrace(http_t *http, /* I - Connection to server */ |
ef416fc2 | 1849 | const char *uri) /* I - URI for trace */ |
1850 | { | |
1851 | return (http_send(http, HTTP_TRACE, uri)); | |
1852 | } | |
1853 | ||
1854 | ||
1855 | /* | |
1856 | * 'httpUpdate()' - Update the current HTTP state for incoming data. | |
1857 | */ | |
1858 | ||
1859 | http_status_t /* O - HTTP status */ | |
568fa3fa | 1860 | httpUpdate(http_t *http) /* I - Connection to server */ |
ef416fc2 | 1861 | { |
1862 | char line[32768], /* Line from connection... */ | |
1863 | *value; /* Pointer to value on line */ | |
1864 | http_field_t field; /* Field index */ | |
1865 | int major, minor, /* HTTP version numbers */ | |
1866 | status; /* Request status */ | |
1867 | ||
1868 | ||
1869 | DEBUG_printf(("httpUpdate(http=%p), state=%d\n", http, http->state)); | |
1870 | ||
1871 | /* | |
1872 | * Flush pending data, if any... | |
1873 | */ | |
1874 | ||
1875 | if (http->wused) | |
1876 | { | |
1877 | DEBUG_puts(" flushing buffer..."); | |
1878 | ||
1879 | if (httpFlushWrite(http) < 0) | |
1880 | return (HTTP_ERROR); | |
1881 | } | |
1882 | ||
1883 | /* | |
1884 | * If we haven't issued any commands, then there is nothing to "update"... | |
1885 | */ | |
1886 | ||
1887 | if (http->state == HTTP_WAITING) | |
1888 | return (HTTP_CONTINUE); | |
1889 | ||
1890 | /* | |
1891 | * Grab all of the lines we can from the connection... | |
1892 | */ | |
1893 | ||
1894 | while (httpGets(line, sizeof(line), http) != NULL) | |
1895 | { | |
1896 | DEBUG_printf(("httpUpdate: Got \"%s\"\n", line)); | |
1897 | ||
1898 | if (line[0] == '\0') | |
1899 | { | |
1900 | /* | |
1901 | * Blank line means the start of the data section (if any). Return | |
1902 | * the result code, too... | |
1903 | * | |
1904 | * If we get status 100 (HTTP_CONTINUE), then we *don't* change states. | |
1905 | * Instead, we just return HTTP_CONTINUE to the caller and keep on | |
1906 | * tryin'... | |
1907 | */ | |
1908 | ||
1909 | if (http->status == HTTP_CONTINUE) | |
1910 | return (http->status); | |
1911 | ||
1912 | if (http->status < HTTP_BAD_REQUEST) | |
1913 | http->digest_tries = 0; | |
1914 | ||
1915 | #ifdef HAVE_SSL | |
1916 | if (http->status == HTTP_SWITCHING_PROTOCOLS && !http->tls) | |
1917 | { | |
1918 | if (http_setup_ssl(http) != 0) | |
1919 | { | |
1920 | # ifdef WIN32 | |
1921 | closesocket(http->fd); | |
1922 | # else | |
1923 | close(http->fd); | |
1924 | # endif /* WIN32 */ | |
1925 | ||
1926 | return (HTTP_ERROR); | |
1927 | } | |
1928 | ||
1929 | return (HTTP_CONTINUE); | |
1930 | } | |
1931 | #endif /* HAVE_SSL */ | |
1932 | ||
1933 | httpGetLength2(http); | |
1934 | ||
1935 | switch (http->state) | |
1936 | { | |
1937 | case HTTP_GET : | |
1938 | case HTTP_POST : | |
1939 | case HTTP_POST_RECV : | |
1940 | case HTTP_PUT : | |
1941 | http->state ++; | |
1942 | case HTTP_POST_SEND : | |
e1d6a774 | 1943 | case HTTP_HEAD : |
ef416fc2 | 1944 | break; |
1945 | ||
1946 | default : | |
1947 | http->state = HTTP_WAITING; | |
1948 | break; | |
1949 | } | |
1950 | ||
1951 | return (http->status); | |
1952 | } | |
1953 | else if (strncmp(line, "HTTP/", 5) == 0) | |
1954 | { | |
1955 | /* | |
1956 | * Got the beginning of a response... | |
1957 | */ | |
1958 | ||
1959 | if (sscanf(line, "HTTP/%d.%d%d", &major, &minor, &status) != 3) | |
1960 | return (HTTP_ERROR); | |
1961 | ||
1962 | http->version = (http_version_t)(major * 100 + minor); | |
1963 | http->status = (http_status_t)status; | |
1964 | } | |
1965 | else if ((value = strchr(line, ':')) != NULL) | |
1966 | { | |
1967 | /* | |
1968 | * Got a value... | |
1969 | */ | |
1970 | ||
1971 | *value++ = '\0'; | |
1972 | while (isspace(*value & 255)) | |
1973 | value ++; | |
1974 | ||
1975 | /* | |
1976 | * Be tolerants of servers that send unknown attribute fields... | |
1977 | */ | |
1978 | ||
1979 | if (!strcasecmp(line, "expect")) | |
1980 | { | |
1981 | /* | |
1982 | * "Expect: 100-continue" or similar... | |
1983 | */ | |
1984 | ||
1985 | http->expect = (http_status_t)atoi(value); | |
1986 | } | |
1987 | else if (!strcasecmp(line, "cookie")) | |
1988 | { | |
1989 | /* | |
1990 | * "Cookie: name=value[; name=value ...]" - replaces previous cookies... | |
1991 | */ | |
1992 | ||
1993 | httpSetCookie(http, value); | |
1994 | } | |
1995 | else if ((field = http_field(line)) == HTTP_FIELD_UNKNOWN) | |
1996 | { | |
1997 | DEBUG_printf(("httpUpdate: unknown field %s seen!\n", line)); | |
1998 | continue; | |
1999 | } | |
2000 | else | |
2001 | httpSetField(http, field, value); | |
2002 | } | |
2003 | else | |
2004 | { | |
2005 | http->status = HTTP_ERROR; | |
2006 | return (HTTP_ERROR); | |
2007 | } | |
2008 | } | |
2009 | ||
2010 | /* | |
2011 | * See if there was an error... | |
2012 | */ | |
2013 | ||
2014 | if (http->error == EPIPE && http->status > HTTP_CONTINUE) | |
2015 | return (http->status); | |
2016 | ||
2017 | if (http->error) | |
2018 | { | |
2019 | DEBUG_printf(("httpUpdate: socket error %d - %s\n", http->error, | |
2020 | strerror(http->error))); | |
2021 | http->status = HTTP_ERROR; | |
2022 | return (HTTP_ERROR); | |
2023 | } | |
2024 | ||
2025 | /* | |
2026 | * If we haven't already returned, then there is nothing new... | |
2027 | */ | |
2028 | ||
2029 | return (HTTP_CONTINUE); | |
2030 | } | |
2031 | ||
2032 | ||
2033 | /* | |
2034 | * 'httpWait()' - Wait for data available on a connection. | |
2035 | * | |
2036 | * @since CUPS 1.1.19@ | |
2037 | */ | |
2038 | ||
2039 | int /* O - 1 if data is available, 0 otherwise */ | |
568fa3fa | 2040 | httpWait(http_t *http, /* I - Connection to server */ |
ef416fc2 | 2041 | int msec) /* I - Milliseconds to wait */ |
2042 | { | |
2043 | /* | |
2044 | * First see if there is data in the buffer... | |
2045 | */ | |
2046 | ||
2047 | if (http == NULL) | |
2048 | return (0); | |
2049 | ||
2050 | if (http->used) | |
2051 | return (1); | |
2052 | ||
8ca02f3c | 2053 | /* |
2054 | * Flush pending data, if any... | |
2055 | */ | |
2056 | ||
2057 | if (http->wused) | |
2058 | { | |
2059 | if (httpFlushWrite(http) < 0) | |
2060 | return (0); | |
2061 | } | |
2062 | ||
ef416fc2 | 2063 | /* |
2064 | * If not, check the SSL/TLS buffers and do a select() on the connection... | |
2065 | */ | |
2066 | ||
411affcf | 2067 | return (http_wait(http, msec, 1)); |
ef416fc2 | 2068 | } |
2069 | ||
2070 | ||
2071 | /* | |
2072 | * 'httpWrite()' - Write data to a HTTP connection. | |
a4d04587 | 2073 | * |
2074 | * This function is deprecated. Use the httpWrite2() function which can | |
2075 | * write more than 2GB of data. | |
2076 | * | |
2077 | * @deprecated@ | |
ef416fc2 | 2078 | */ |
2079 | ||
2080 | int /* O - Number of bytes written */ | |
568fa3fa | 2081 | httpWrite(http_t *http, /* I - Connection to server */ |
ef416fc2 | 2082 | const char *buffer, /* I - Buffer for data */ |
2083 | int length) /* I - Number of bytes to write */ | |
2084 | { | |
a4d04587 | 2085 | return ((int)httpWrite2(http, buffer, length)); |
2086 | } | |
2087 | ||
2088 | ||
2089 | /* | |
2090 | * 'httpWrite2()' - Write data to a HTTP connection. | |
ecdc0628 | 2091 | * |
2092 | * @since CUPS 1.2@ | |
a4d04587 | 2093 | */ |
2094 | ||
2095 | ssize_t /* O - Number of bytes written */ | |
568fa3fa | 2096 | httpWrite2(http_t *http, /* I - Connection to server */ |
a4d04587 | 2097 | const char *buffer, /* I - Buffer for data */ |
2098 | size_t length) /* I - Number of bytes to write */ | |
2099 | { | |
2100 | ssize_t bytes; /* Bytes written */ | |
ef416fc2 | 2101 | |
2102 | ||
ae71f5de | 2103 | DEBUG_printf(("httpWrite2(http=%p, buffer=%p, length=" CUPS_LLFMT ")\n", http, |
a603edef | 2104 | buffer, CUPS_LLCAST length)); |
ef416fc2 | 2105 | |
2106 | /* | |
2107 | * Range check input... | |
2108 | */ | |
2109 | ||
2110 | if (http == NULL || buffer == NULL) | |
2111 | return (-1); | |
2112 | ||
2113 | /* | |
2114 | * Mark activity on the connection... | |
2115 | */ | |
2116 | ||
2117 | http->activity = time(NULL); | |
2118 | ||
2119 | /* | |
2120 | * Buffer small writes for better performance... | |
2121 | */ | |
2122 | ||
2123 | if (length > 0) | |
2124 | { | |
2125 | if (http->wused && (length + http->wused) > sizeof(http->wbuffer)) | |
2126 | { | |
ae71f5de MS |
2127 | DEBUG_printf(("httpWrite2: Flushing buffer (wused=%d, length=" |
2128 | CUPS_LLFMT ")\n", http->wused, CUPS_LLCAST length)); | |
ef416fc2 | 2129 | |
2130 | httpFlushWrite(http); | |
2131 | } | |
2132 | ||
07725fee | 2133 | if ((length + http->wused) <= sizeof(http->wbuffer)) |
ef416fc2 | 2134 | { |
2135 | /* | |
2136 | * Write to buffer... | |
2137 | */ | |
2138 | ||
ae71f5de | 2139 | DEBUG_printf(("httpWrite2: Copying " CUPS_LLFMT " bytes to wbuffer...\n", |
a603edef | 2140 | CUPS_LLCAST length)); |
ef416fc2 | 2141 | |
2142 | memcpy(http->wbuffer + http->wused, buffer, length); | |
b86bc4cf | 2143 | http->wused += (int)length; |
2144 | bytes = (ssize_t)length; | |
ef416fc2 | 2145 | } |
2146 | else | |
2147 | { | |
2148 | /* | |
2149 | * Otherwise write the data directly... | |
2150 | */ | |
2151 | ||
ae71f5de | 2152 | DEBUG_printf(("httpWrite2: Writing " CUPS_LLFMT " bytes to socket...\n", |
a603edef | 2153 | CUPS_LLCAST length)); |
ef416fc2 | 2154 | |
2155 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
b86bc4cf | 2156 | bytes = (ssize_t)http_write_chunk(http, buffer, (int)length); |
ef416fc2 | 2157 | else |
b86bc4cf | 2158 | bytes = (ssize_t)http_write(http, buffer, (int)length); |
ef416fc2 | 2159 | |
ae71f5de MS |
2160 | DEBUG_printf(("httpWrite2: Wrote " CUPS_LLFMT " bytes...\n", |
2161 | CUPS_LLCAST bytes)); | |
ef416fc2 | 2162 | } |
2163 | ||
2164 | if (http->data_encoding == HTTP_ENCODE_LENGTH) | |
2165 | http->data_remaining -= bytes; | |
2166 | } | |
2167 | else | |
2168 | bytes = 0; | |
2169 | ||
2170 | /* | |
2171 | * Handle end-of-request processing... | |
2172 | */ | |
2173 | ||
2174 | if ((http->data_encoding == HTTP_ENCODE_CHUNKED && length == 0) || | |
2175 | (http->data_encoding == HTTP_ENCODE_LENGTH && http->data_remaining == 0)) | |
2176 | { | |
2177 | /* | |
2178 | * Finished with the transfer; unless we are sending POST or PUT | |
2179 | * data, go idle... | |
2180 | */ | |
2181 | ||
2182 | DEBUG_puts("httpWrite: changing states..."); | |
2183 | ||
2184 | if (http->wused) | |
2185 | httpFlushWrite(http); | |
2186 | ||
2187 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
2188 | { | |
2189 | /* | |
2190 | * Send a 0-length chunk at the end of the request... | |
2191 | */ | |
2192 | ||
2193 | http_write(http, "0\r\n\r\n", 5); | |
2194 | ||
2195 | /* | |
2196 | * Reset the data state... | |
2197 | */ | |
2198 | ||
2199 | http->data_encoding = HTTP_ENCODE_LENGTH; | |
2200 | http->data_remaining = 0; | |
2201 | } | |
2202 | ||
2203 | if (http->state == HTTP_POST_RECV) | |
2204 | http->state ++; | |
2205 | else if (http->state == HTTP_PUT_RECV) | |
2206 | http->state = HTTP_STATUS; | |
2207 | else | |
2208 | http->state = HTTP_WAITING; | |
2209 | } | |
2210 | ||
2211 | return (bytes); | |
2212 | } | |
2213 | ||
2214 | ||
2215 | #if defined(HAVE_SSL) && defined(HAVE_CDSASSL) | |
2216 | /* | |
411affcf | 2217 | * '_httpWriteCDSA()' - Write function for the CDSA library. |
ef416fc2 | 2218 | */ |
2219 | ||
2220 | OSStatus /* O - -1 on error, 0 on success */ | |
2221 | _httpWriteCDSA( | |
2222 | SSLConnectionRef connection, /* I - SSL/TLS connection */ | |
2223 | const void *data, /* I - Data buffer */ | |
2224 | size_t *dataLength) /* IO - Number of bytes */ | |
2225 | { | |
411affcf | 2226 | OSStatus result; /* Return value */ |
2227 | ssize_t bytes; /* Number of bytes read */ | |
2228 | http_t *http; /* HTTP connection */ | |
e53920b9 | 2229 | |
2230 | ||
411affcf | 2231 | http = (http_t *)connection; |
ef416fc2 | 2232 | |
b423cd4c | 2233 | do |
411affcf | 2234 | { |
2235 | bytes = write(http->fd, data, *dataLength); | |
2236 | } | |
b423cd4c | 2237 | while (bytes == -1 && errno == EINTR); |
fa73b229 | 2238 | |
b423cd4c | 2239 | if (bytes == *dataLength) |
411affcf | 2240 | { |
b423cd4c | 2241 | result = 0; |
411affcf | 2242 | } |
b423cd4c | 2243 | else if (bytes >= 0) |
2244 | { | |
2245 | *dataLength = bytes; | |
2246 | result = errSSLWouldBlock; | |
2247 | } | |
2248 | else | |
2249 | { | |
2250 | *dataLength = 0; | |
2251 | ||
fa73b229 | 2252 | if (errno == EAGAIN) |
b423cd4c | 2253 | result = errSSLWouldBlock; |
b423cd4c | 2254 | else |
ed486911 | 2255 | result = errSSLClosedAbort; |
ef416fc2 | 2256 | } |
b423cd4c | 2257 | |
411affcf | 2258 | return (result); |
ef416fc2 | 2259 | } |
2260 | #endif /* HAVE_SSL && HAVE_CDSASSL */ | |
2261 | ||
2262 | ||
411affcf | 2263 | #if defined(HAVE_SSL) && defined(HAVE_GNUTLS) |
2264 | /* | |
2265 | * '_httpWriteGNUTLS()' - Write function for the GNU TLS library. | |
2266 | */ | |
2267 | ||
2268 | ssize_t /* O - Number of bytes written or -1 on error */ | |
2269 | _httpWriteGNUTLS( | |
568fa3fa | 2270 | gnutls_transport_ptr ptr, /* I - Connection to server */ |
411affcf | 2271 | const void *data, /* I - Data buffer */ |
2272 | size_t length) /* I - Number of bytes to write */ | |
2273 | { | |
2274 | return (send(((http_t *)ptr)->fd, data, length, 0)); | |
2275 | } | |
2276 | #endif /* HAVE_SSL && HAVE_GNUTLS */ | |
2277 | ||
2278 | ||
2279 | #if defined(HAVE_SSL) && defined(HAVE_LIBSSL) | |
2280 | /* | |
2281 | * 'http_bio_ctrl()' - Control the HTTP connection. | |
2282 | */ | |
2283 | ||
2284 | static long /* O - Result/data */ | |
2285 | http_bio_ctrl(BIO *h, /* I - BIO data */ | |
2286 | int cmd, /* I - Control command */ | |
2287 | long arg1, /* I - First argument */ | |
2288 | void *arg2) /* I - Second argument */ | |
2289 | { | |
2290 | switch (cmd) | |
2291 | { | |
2292 | default : | |
2293 | return (0); | |
2294 | ||
2295 | case BIO_CTRL_RESET : | |
2296 | h->ptr = NULL; | |
2297 | return (0); | |
2298 | ||
2299 | case BIO_C_SET_FILE_PTR : | |
2300 | h->ptr = arg2; | |
2301 | h->init = 1; | |
2302 | return (1); | |
2303 | ||
2304 | case BIO_C_GET_FILE_PTR : | |
2305 | if (arg2) | |
2306 | { | |
2307 | *((void **)arg2) = h->ptr; | |
2308 | return (1); | |
2309 | } | |
2310 | else | |
2311 | return (0); | |
2312 | ||
2313 | case BIO_CTRL_DUP : | |
2314 | case BIO_CTRL_FLUSH : | |
2315 | return (1); | |
2316 | } | |
2317 | } | |
2318 | ||
2319 | ||
2320 | /* | |
2321 | * 'http_bio_free()' - Free OpenSSL data. | |
2322 | */ | |
2323 | ||
2324 | static int /* O - 1 on success, 0 on failure */ | |
2325 | http_bio_free(BIO *h) /* I - BIO data */ | |
2326 | { | |
2327 | if (!h) | |
2328 | return (0); | |
2329 | ||
2330 | if (h->shutdown) | |
2331 | { | |
2332 | h->init = 0; | |
2333 | h->flags = 0; | |
2334 | } | |
2335 | ||
2336 | return (1); | |
2337 | } | |
2338 | ||
2339 | ||
2340 | /* | |
2341 | * 'http_bio_new()' - Initialize an OpenSSL BIO structure. | |
2342 | */ | |
2343 | ||
2344 | static int /* O - 1 on success, 0 on failure */ | |
2345 | http_bio_new(BIO *h) /* I - BIO data */ | |
2346 | { | |
2347 | if (!h) | |
2348 | return (0); | |
2349 | ||
2350 | h->init = 0; | |
2351 | h->num = 0; | |
2352 | h->ptr = NULL; | |
2353 | h->flags = 0; | |
2354 | ||
2355 | return (1); | |
2356 | } | |
2357 | ||
2358 | ||
2359 | /* | |
2360 | * 'http_bio_puts()' - Send a string for OpenSSL. | |
2361 | */ | |
2362 | ||
2363 | static int /* O - Bytes written */ | |
2364 | http_bio_puts(BIO *h, /* I - BIO data */ | |
2365 | const char *str) /* I - String to write */ | |
2366 | { | |
b86bc4cf | 2367 | #ifdef WIN32 |
2368 | return (send(((http_t *)h->ptr)->fd, str, (int)strlen(str), 0)); | |
2369 | #else | |
411affcf | 2370 | return (send(((http_t *)h->ptr)->fd, str, strlen(str), 0)); |
b86bc4cf | 2371 | #endif /* WIN32 */ |
411affcf | 2372 | } |
2373 | ||
2374 | ||
2375 | /* | |
2376 | * 'http_bio_read()' - Read data for OpenSSL. | |
2377 | */ | |
2378 | ||
2379 | static int /* O - Bytes read */ | |
2380 | http_bio_read(BIO *h, /* I - BIO data */ | |
2381 | char *buf, /* I - Buffer */ | |
2382 | int size) /* I - Number of bytes to read */ | |
2383 | { | |
2384 | http_t *http; /* HTTP connection */ | |
2385 | ||
2386 | ||
2387 | http = (http_t *)h->ptr; | |
2388 | ||
2389 | if (!http->blocking) | |
2390 | { | |
2391 | /* | |
2392 | * Make sure we have data before we read... | |
2393 | */ | |
2394 | ||
2395 | if (!http_wait(http, 10000, 0)) | |
2396 | { | |
b86bc4cf | 2397 | #ifdef WIN32 |
2398 | http->error = WSAETIMEDOUT; | |
2399 | #else | |
411affcf | 2400 | http->error = ETIMEDOUT; |
b86bc4cf | 2401 | #endif /* WIN32 */ |
2402 | ||
411affcf | 2403 | return (-1); |
2404 | } | |
2405 | } | |
2406 | ||
2407 | return (recv(http->fd, buf, size, 0)); | |
2408 | } | |
2409 | ||
2410 | ||
2411 | /* | |
2412 | * 'http_bio_write()' - Write data for OpenSSL. | |
2413 | */ | |
2414 | ||
2415 | static int /* O - Bytes written */ | |
2416 | http_bio_write(BIO *h, /* I - BIO data */ | |
2417 | const char *buf, /* I - Buffer to write */ | |
2418 | int num) /* I - Number of bytes to write */ | |
2419 | { | |
2420 | return (send(((http_t *)h->ptr)->fd, buf, num, 0)); | |
2421 | } | |
2422 | #endif /* HAVE_SSL && HAVE_LIBSSL */ | |
2423 | ||
2424 | ||
ae71f5de MS |
2425 | #ifdef DEBUG |
2426 | /* | |
2427 | * 'http_debug_hex()' - Do a hex dump of a buffer. | |
2428 | */ | |
2429 | ||
2430 | static void | |
2431 | http_debug_hex(const char *prefix, /* I - Prefix for line */ | |
2432 | const char *buffer, /* I - Buffer to dump */ | |
2433 | int bytes) /* I - Bytes to dump */ | |
2434 | { | |
2435 | int i, j, /* Looping vars */ | |
2436 | ch; /* Current character */ | |
2437 | char line[255], /* Line buffer */ | |
2438 | *start, /* Start of line after prefix */ | |
2439 | *ptr; /* Pointer into line */ | |
2440 | ||
2441 | ||
4509bb49 | 2442 | if (_cups_debug_fd < 0) |
dd1abb6b MS |
2443 | return; |
2444 | ||
ae71f5de MS |
2445 | DEBUG_printf(("%s: %d bytes:\n", prefix, bytes)); |
2446 | ||
2447 | snprintf(line, sizeof(line), "%s: ", prefix); | |
2448 | start = line + strlen(line); | |
2449 | ||
2450 | for (i = 0; i < bytes; i += 16) | |
2451 | { | |
2452 | for (j = 0, ptr = start; j < 16 && (i + j) < bytes; j ++, ptr += 2) | |
2453 | sprintf(ptr, "%02X", buffer[i + j] & 255); | |
2454 | ||
2455 | while (j < 16) | |
2456 | { | |
2457 | strcpy(ptr, " "); | |
2458 | ptr += 2; | |
2459 | j ++; | |
2460 | } | |
2461 | ||
2462 | strcpy(ptr, " "); | |
2463 | ptr += 2; | |
2464 | ||
2465 | for (j = 0; j < 16 && (i + j) < bytes; j ++) | |
2466 | { | |
2467 | ch = buffer[i + j] & 255; | |
2468 | ||
2469 | if (ch < ' ' || ch >= 127) | |
2470 | ch = '.'; | |
2471 | ||
2472 | *ptr++ = ch; | |
2473 | } | |
2474 | ||
2475 | *ptr = '\0'; | |
2476 | DEBUG_puts(line); | |
2477 | } | |
2478 | } | |
2479 | #endif /* DEBUG */ | |
2480 | ||
2481 | ||
ef416fc2 | 2482 | /* |
2483 | * 'http_field()' - Return the field index for a field name. | |
2484 | */ | |
2485 | ||
ae71f5de MS |
2486 | static http_field_t /* O - Field index */ |
2487 | http_field(const char *name) /* I - String name */ | |
ef416fc2 | 2488 | { |
ae71f5de | 2489 | int i; /* Looping var */ |
ef416fc2 | 2490 | |
2491 | ||
2492 | for (i = 0; i < HTTP_FIELD_MAX; i ++) | |
2493 | if (strcasecmp(name, http_fields[i]) == 0) | |
2494 | return ((http_field_t)i); | |
2495 | ||
2496 | return (HTTP_FIELD_UNKNOWN); | |
2497 | } | |
2498 | ||
2499 | ||
2500 | #ifdef HAVE_SSL | |
2501 | /* | |
2502 | * 'http_read_ssl()' - Read from a SSL/TLS connection. | |
2503 | */ | |
2504 | ||
2505 | static int /* O - Bytes read */ | |
568fa3fa | 2506 | http_read_ssl(http_t *http, /* I - Connection to server */ |
ef416fc2 | 2507 | char *buf, /* I - Buffer to store data */ |
2508 | int len) /* I - Length of buffer */ | |
2509 | { | |
2510 | # if defined(HAVE_LIBSSL) | |
2511 | return (SSL_read((SSL *)(http->tls), buf, len)); | |
2512 | ||
2513 | # elif defined(HAVE_GNUTLS) | |
2514 | return (gnutls_record_recv(((http_tls_t *)(http->tls))->session, buf, len)); | |
2515 | ||
2516 | # elif defined(HAVE_CDSASSL) | |
fa73b229 | 2517 | int result; /* Return value */ |
ef416fc2 | 2518 | OSStatus error; /* Error info */ |
2519 | size_t processed; /* Number of bytes processed */ | |
2520 | ||
2521 | ||
89d46774 | 2522 | error = SSLRead(((http_tls_t *)http->tls)->session, buf, len, &processed); |
ef416fc2 | 2523 | |
fa73b229 | 2524 | switch (error) |
ef416fc2 | 2525 | { |
fa73b229 | 2526 | case 0 : |
2527 | result = (int)processed; | |
2528 | break; | |
2529 | case errSSLClosedGraceful : | |
2530 | result = 0; | |
2531 | break; | |
2532 | case errSSLWouldBlock : | |
b423cd4c | 2533 | if (processed) |
2534 | result = (int)processed; | |
2535 | else | |
2536 | { | |
2537 | result = -1; | |
2538 | errno = EINTR; | |
2539 | } | |
fa73b229 | 2540 | break; |
2541 | default : | |
2542 | errno = EPIPE; | |
2543 | result = -1; | |
2544 | break; | |
ef416fc2 | 2545 | } |
fa73b229 | 2546 | |
2547 | return (result); | |
ef416fc2 | 2548 | # endif /* HAVE_LIBSSL */ |
2549 | } | |
2550 | #endif /* HAVE_SSL */ | |
2551 | ||
2552 | ||
2553 | /* | |
2554 | * 'http_send()' - Send a request with all fields and the trailing blank line. | |
2555 | */ | |
2556 | ||
2557 | static int /* O - 0 on success, non-zero on error */ | |
568fa3fa | 2558 | http_send(http_t *http, /* I - Connection to server */ |
ef416fc2 | 2559 | http_state_t request, /* I - Request code */ |
2560 | const char *uri) /* I - URI */ | |
2561 | { | |
2562 | int i; /* Looping var */ | |
839a51c8 | 2563 | char buf[1024]; /* Encoded URI buffer */ |
ef416fc2 | 2564 | static const char * const codes[] = |
2565 | { /* Request code strings */ | |
2566 | NULL, | |
2567 | "OPTIONS", | |
2568 | "GET", | |
2569 | NULL, | |
2570 | "HEAD", | |
2571 | "POST", | |
2572 | NULL, | |
2573 | NULL, | |
2574 | "PUT", | |
2575 | NULL, | |
2576 | "DELETE", | |
2577 | "TRACE", | |
2578 | "CLOSE" | |
2579 | }; | |
ef416fc2 | 2580 | |
2581 | ||
2582 | DEBUG_printf(("http_send(http=%p, request=HTTP_%s, uri=\"%s\")\n", | |
2583 | http, codes[request], uri)); | |
2584 | ||
2585 | if (http == NULL || uri == NULL) | |
2586 | return (-1); | |
2587 | ||
2588 | /* | |
2589 | * Set the User-Agent field if it isn't already... | |
2590 | */ | |
2591 | ||
2592 | if (!http->fields[HTTP_FIELD_USER_AGENT][0]) | |
2593 | httpSetField(http, HTTP_FIELD_USER_AGENT, CUPS_MINIMAL); | |
2594 | ||
2595 | /* | |
2596 | * Encode the URI as needed... | |
2597 | */ | |
2598 | ||
839a51c8 | 2599 | _httpEncodeURI(buf, uri, sizeof(buf)); |
ef416fc2 | 2600 | |
2601 | /* | |
2602 | * See if we had an error the last time around; if so, reconnect... | |
2603 | */ | |
2604 | ||
2605 | if (http->status == HTTP_ERROR || http->status >= HTTP_BAD_REQUEST) | |
fa73b229 | 2606 | if (httpReconnect(http)) |
2607 | return (-1); | |
ef416fc2 | 2608 | |
d09495fa | 2609 | /* |
2610 | * Flush any written data that is pending... | |
2611 | */ | |
2612 | ||
2613 | if (http->wused) | |
2614 | httpFlushWrite(http); | |
2615 | ||
ef416fc2 | 2616 | /* |
2617 | * Send the request header... | |
2618 | */ | |
2619 | ||
d09495fa | 2620 | http->state = request; |
2621 | http->data_encoding = HTTP_ENCODE_FIELDS; | |
2622 | ||
ef416fc2 | 2623 | if (request == HTTP_POST || request == HTTP_PUT) |
2624 | http->state ++; | |
2625 | ||
2626 | http->status = HTTP_CONTINUE; | |
2627 | ||
2628 | #ifdef HAVE_SSL | |
2629 | if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls) | |
2630 | { | |
2631 | httpSetField(http, HTTP_FIELD_CONNECTION, "Upgrade"); | |
2632 | httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.0,SSL/2.0,SSL/3.0"); | |
2633 | } | |
2634 | #endif /* HAVE_SSL */ | |
2635 | ||
2636 | if (httpPrintf(http, "%s %s HTTP/1.1\r\n", codes[request], buf) < 1) | |
2637 | { | |
2638 | http->status = HTTP_ERROR; | |
2639 | return (-1); | |
2640 | } | |
2641 | ||
2642 | for (i = 0; i < HTTP_FIELD_MAX; i ++) | |
2643 | if (http->fields[i][0] != '\0') | |
2644 | { | |
ae71f5de MS |
2645 | DEBUG_printf(("http_send: %s: %s\n", http_fields[i], |
2646 | httpGetField(http, i))); | |
ef416fc2 | 2647 | |
f7deaa1a | 2648 | if (httpPrintf(http, "%s: %s\r\n", http_fields[i], |
2649 | httpGetField(http, i)) < 1) | |
ef416fc2 | 2650 | { |
2651 | http->status = HTTP_ERROR; | |
2652 | return (-1); | |
2653 | } | |
2654 | } | |
2655 | ||
2656 | if (http->cookie) | |
2657 | if (httpPrintf(http, "Cookie: $Version=0; %s\r\n", http->cookie) < 1) | |
2658 | { | |
2659 | http->status = HTTP_ERROR; | |
2660 | return (-1); | |
2661 | } | |
2662 | ||
b423cd4c | 2663 | if (http->expect == HTTP_CONTINUE && |
2664 | (http->state == HTTP_POST_RECV || http->state == HTTP_PUT_RECV)) | |
2665 | if (httpPrintf(http, "Expect: 100-continue\r\n") < 1) | |
2666 | { | |
2667 | http->status = HTTP_ERROR; | |
2668 | return (-1); | |
2669 | } | |
2670 | ||
ef416fc2 | 2671 | if (httpPrintf(http, "\r\n") < 1) |
2672 | { | |
2673 | http->status = HTTP_ERROR; | |
2674 | return (-1); | |
2675 | } | |
2676 | ||
d09495fa | 2677 | httpFlushWrite(http); |
ef416fc2 | 2678 | httpGetLength2(http); |
2679 | httpClearFields(http); | |
2680 | ||
f7deaa1a | 2681 | /* |
b94498cf | 2682 | * The Kerberos and AuthRef authentication strings can only be used once... |
f7deaa1a | 2683 | */ |
2684 | ||
bc44d920 | 2685 | if (http->field_authorization && http->authstring && |
b94498cf | 2686 | (!strncmp(http->authstring, "Negotiate", 9) || |
2687 | !strncmp(http->authstring, "AuthRef", 7))) | |
f7deaa1a | 2688 | { |
2689 | http->_authstring[0] = '\0'; | |
2690 | ||
2691 | if (http->authstring != http->_authstring) | |
2692 | free(http->authstring); | |
2693 | ||
2694 | http->authstring = http->_authstring; | |
2695 | } | |
2696 | ||
ef416fc2 | 2697 | return (0); |
2698 | } | |
2699 | ||
2700 | ||
2701 | #ifdef HAVE_SSL | |
2702 | /* | |
2703 | * 'http_setup_ssl()' - Set up SSL/TLS support on a connection. | |
2704 | */ | |
2705 | ||
2706 | static int /* O - Status of connection */ | |
568fa3fa | 2707 | http_setup_ssl(http_t *http) /* I - Connection to server */ |
ef416fc2 | 2708 | { |
2709 | # ifdef HAVE_LIBSSL | |
89d46774 | 2710 | SSL_CTX *context; /* Context for encryption */ |
2711 | SSL *conn; /* Connection for encryption */ | |
411affcf | 2712 | BIO *bio; /* BIO data */ |
ef416fc2 | 2713 | # elif defined(HAVE_GNUTLS) |
89d46774 | 2714 | http_tls_t *conn; /* TLS session object */ |
ef416fc2 | 2715 | gnutls_certificate_client_credentials *credentials; |
89d46774 | 2716 | /* TLS credentials */ |
ef416fc2 | 2717 | # elif defined(HAVE_CDSASSL) |
89d46774 | 2718 | OSStatus error; /* Error code */ |
2719 | http_tls_t *conn; /* CDSA connection information */ | |
ef416fc2 | 2720 | # endif /* HAVE_LIBSSL */ |
2721 | ||
2722 | ||
2723 | DEBUG_printf(("http_setup_ssl(http=%p)\n", http)); | |
2724 | ||
2725 | # ifdef HAVE_LIBSSL | |
2726 | context = SSL_CTX_new(SSLv23_client_method()); | |
2727 | ||
2728 | SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */ | |
2729 | ||
411affcf | 2730 | bio = BIO_new(_httpBIOMethods()); |
2731 | BIO_ctrl(bio, BIO_C_SET_FILE_PTR, 0, (char *)http); | |
2732 | ||
ef416fc2 | 2733 | conn = SSL_new(context); |
411affcf | 2734 | SSL_set_bio(conn, bio, bio); |
ef416fc2 | 2735 | |
ef416fc2 | 2736 | if (SSL_connect(conn) != 1) |
2737 | { | |
2738 | # ifdef DEBUG | |
2739 | unsigned long error; /* Error code */ | |
2740 | ||
2741 | while ((error = ERR_get_error()) != 0) | |
2742 | printf("http_setup_ssl: %s\n", ERR_error_string(error, NULL)); | |
2743 | # endif /* DEBUG */ | |
2744 | ||
2745 | SSL_CTX_free(context); | |
2746 | SSL_free(conn); | |
2747 | ||
2748 | # ifdef WIN32 | |
2749 | http->error = WSAGetLastError(); | |
2750 | # else | |
2751 | http->error = errno; | |
2752 | # endif /* WIN32 */ | |
2753 | http->status = HTTP_ERROR; | |
2754 | ||
2755 | return (HTTP_ERROR); | |
2756 | } | |
2757 | ||
2758 | # elif defined(HAVE_GNUTLS) | |
89d46774 | 2759 | if ((conn = (http_tls_t *)malloc(sizeof(http_tls_t))) == NULL) |
ef416fc2 | 2760 | { |
2761 | http->error = errno; | |
2762 | http->status = HTTP_ERROR; | |
2763 | ||
2764 | return (-1); | |
2765 | } | |
2766 | ||
2767 | credentials = (gnutls_certificate_client_credentials *) | |
2768 | malloc(sizeof(gnutls_certificate_client_credentials)); | |
2769 | if (credentials == NULL) | |
2770 | { | |
2771 | free(conn); | |
2772 | ||
2773 | http->error = errno; | |
2774 | http->status = HTTP_ERROR; | |
2775 | ||
2776 | return (-1); | |
2777 | } | |
2778 | ||
2779 | gnutls_certificate_allocate_credentials(credentials); | |
2780 | ||
2781 | gnutls_init(&(conn->session), GNUTLS_CLIENT); | |
2782 | gnutls_set_default_priority(conn->session); | |
2783 | gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials); | |
411affcf | 2784 | gnutls_transport_set_ptr(conn->session, (gnutls_transport_ptr)http); |
2785 | gnutls_transport_set_pull_function(conn->session, _httpReadGNUTLS); | |
2786 | gnutls_transport_set_push_function(conn->session, _httpWriteGNUTLS); | |
ef416fc2 | 2787 | |
2788 | if ((gnutls_handshake(conn->session)) != GNUTLS_E_SUCCESS) | |
2789 | { | |
2790 | http->error = errno; | |
2791 | http->status = HTTP_ERROR; | |
2792 | ||
2793 | return (-1); | |
2794 | } | |
2795 | ||
2796 | conn->credentials = credentials; | |
2797 | ||
2798 | # elif defined(HAVE_CDSASSL) | |
89d46774 | 2799 | conn = (http_tls_t *)calloc(1, sizeof(http_tls_t)); |
e53920b9 | 2800 | |
89d46774 | 2801 | if (conn == NULL) |
2802 | return (-1); | |
e53920b9 | 2803 | |
89d46774 | 2804 | if ((error = SSLNewContext(false, &conn->session))) |
e53920b9 | 2805 | { |
89d46774 | 2806 | http->error = error; |
2807 | http->status = HTTP_ERROR; | |
e53920b9 | 2808 | |
89d46774 | 2809 | free(conn); |
2810 | return (-1); | |
e53920b9 | 2811 | } |
ef416fc2 | 2812 | |
89d46774 | 2813 | /* |
2814 | * Use a union to resolve warnings about int/pointer size mismatches... | |
2815 | */ | |
2816 | ||
411affcf | 2817 | error = SSLSetConnection(conn->session, http); |
89d46774 | 2818 | |
2819 | if (!error) | |
2820 | error = SSLSetIOFuncs(conn->session, _httpReadCDSA, _httpWriteCDSA); | |
2821 | ||
ef416fc2 | 2822 | if (!error) |
89d46774 | 2823 | error = SSLSetAllowsExpiredCerts(conn->session, true); |
ef416fc2 | 2824 | |
2825 | if (!error) | |
89d46774 | 2826 | error = SSLSetAllowsAnyRoot(conn->session, true); |
ef416fc2 | 2827 | |
ed486911 | 2828 | if (!error) |
2829 | error = SSLSetProtocolVersionEnabled(conn->session, kSSLProtocol2, false); | |
2830 | ||
ef416fc2 | 2831 | if (!error) |
b423cd4c | 2832 | { |
89d46774 | 2833 | while ((error = SSLHandshake(conn->session)) == errSSLWouldBlock) |
b423cd4c | 2834 | usleep(1000); |
2835 | } | |
ef416fc2 | 2836 | |
89d46774 | 2837 | if (error) |
ef416fc2 | 2838 | { |
2839 | http->error = error; | |
2840 | http->status = HTTP_ERROR; | |
2841 | ||
89d46774 | 2842 | SSLDisposeContext(conn->session); |
ef416fc2 | 2843 | |
89d46774 | 2844 | free(conn); |
ef416fc2 | 2845 | |
2846 | return (-1); | |
2847 | } | |
2848 | # endif /* HAVE_CDSASSL */ | |
2849 | ||
2850 | http->tls = conn; | |
2851 | return (0); | |
2852 | } | |
2853 | #endif /* HAVE_SSL */ | |
2854 | ||
2855 | ||
2856 | #ifdef HAVE_SSL | |
2857 | /* | |
2858 | * 'http_shutdown_ssl()' - Shut down SSL/TLS on a connection. | |
2859 | */ | |
2860 | ||
2861 | static void | |
568fa3fa | 2862 | http_shutdown_ssl(http_t *http) /* I - Connection to server */ |
ef416fc2 | 2863 | { |
2864 | # ifdef HAVE_LIBSSL | |
89d46774 | 2865 | SSL_CTX *context; /* Context for encryption */ |
2866 | SSL *conn; /* Connection for encryption */ | |
ef416fc2 | 2867 | |
2868 | ||
2869 | conn = (SSL *)(http->tls); | |
2870 | context = SSL_get_SSL_CTX(conn); | |
2871 | ||
2872 | SSL_shutdown(conn); | |
2873 | SSL_CTX_free(context); | |
2874 | SSL_free(conn); | |
2875 | ||
2876 | # elif defined(HAVE_GNUTLS) | |
89d46774 | 2877 | http_tls_t *conn; /* Encryption session */ |
ef416fc2 | 2878 | gnutls_certificate_client_credentials *credentials; |
89d46774 | 2879 | /* TLS credentials */ |
ef416fc2 | 2880 | |
2881 | ||
2882 | conn = (http_tls_t *)(http->tls); | |
2883 | credentials = (gnutls_certificate_client_credentials *)(conn->credentials); | |
2884 | ||
2885 | gnutls_bye(conn->session, GNUTLS_SHUT_RDWR); | |
2886 | gnutls_deinit(conn->session); | |
2887 | gnutls_certificate_free_credentials(*credentials); | |
2888 | free(credentials); | |
2889 | free(conn); | |
2890 | ||
2891 | # elif defined(HAVE_CDSASSL) | |
89d46774 | 2892 | http_tls_t *conn; /* CDSA connection information */ |
2893 | ||
2894 | ||
2895 | conn = (http_tls_t *)(http->tls); | |
2896 | ||
2897 | while (SSLClose(conn->session) == errSSLWouldBlock) | |
b423cd4c | 2898 | usleep(1000); |
2899 | ||
89d46774 | 2900 | SSLDisposeContext(conn->session); |
2901 | ||
2902 | if (conn->certsArray) | |
2903 | CFRelease(conn->certsArray); | |
2904 | ||
2905 | free(conn); | |
ef416fc2 | 2906 | # endif /* HAVE_LIBSSL */ |
2907 | ||
2908 | http->tls = NULL; | |
2909 | } | |
2910 | #endif /* HAVE_SSL */ | |
2911 | ||
2912 | ||
2913 | #ifdef HAVE_SSL | |
2914 | /* | |
2915 | * 'http_upgrade()' - Force upgrade to TLS encryption. | |
2916 | */ | |
2917 | ||
89d46774 | 2918 | static int /* O - Status of connection */ |
568fa3fa | 2919 | http_upgrade(http_t *http) /* I - Connection to server */ |
ef416fc2 | 2920 | { |
89d46774 | 2921 | int ret; /* Return value */ |
2922 | http_t myhttp; /* Local copy of HTTP data */ | |
ef416fc2 | 2923 | |
2924 | ||
2925 | DEBUG_printf(("http_upgrade(%p)\n", http)); | |
2926 | ||
2927 | /* | |
2928 | * Copy the HTTP data to a local variable so we can do the OPTIONS | |
2929 | * request without interfering with the existing request data... | |
2930 | */ | |
2931 | ||
2932 | memcpy(&myhttp, http, sizeof(myhttp)); | |
2933 | ||
2934 | /* | |
2935 | * Send an OPTIONS request to the server, requiring SSL or TLS | |
2936 | * encryption on the link... | |
2937 | */ | |
2938 | ||
f7deaa1a | 2939 | http->field_authorization = NULL; /* Don't free the auth string */ |
2940 | ||
b86bc4cf | 2941 | httpClearFields(http); |
2942 | httpSetField(http, HTTP_FIELD_CONNECTION, "upgrade"); | |
2943 | httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.0, SSL/2.0, SSL/3.0"); | |
ef416fc2 | 2944 | |
b86bc4cf | 2945 | if ((ret = httpOptions(http, "*")) == 0) |
ef416fc2 | 2946 | { |
2947 | /* | |
2948 | * Wait for the secure connection... | |
2949 | */ | |
2950 | ||
b86bc4cf | 2951 | while (httpUpdate(http) == HTTP_CONTINUE); |
ef416fc2 | 2952 | } |
2953 | ||
b86bc4cf | 2954 | httpFlush(http); |
ef416fc2 | 2955 | |
2956 | /* | |
b86bc4cf | 2957 | * Restore the HTTP request data... |
ef416fc2 | 2958 | */ |
2959 | ||
b86bc4cf | 2960 | memcpy(http->fields, myhttp.fields, sizeof(http->fields)); |
f7deaa1a | 2961 | http->data_encoding = myhttp.data_encoding; |
2962 | http->data_remaining = myhttp.data_remaining; | |
2963 | http->_data_remaining = myhttp._data_remaining; | |
2964 | http->expect = myhttp.expect; | |
2965 | http->field_authorization = myhttp.field_authorization; | |
bc44d920 | 2966 | http->digest_tries = myhttp.digest_tries; |
ef416fc2 | 2967 | |
2968 | /* | |
2969 | * See if we actually went secure... | |
2970 | */ | |
2971 | ||
2972 | if (!http->tls) | |
2973 | { | |
2974 | /* | |
2975 | * Server does not support HTTP upgrade... | |
2976 | */ | |
2977 | ||
2978 | DEBUG_puts("Server does not support HTTP upgrade!"); | |
2979 | ||
2980 | # ifdef WIN32 | |
2981 | closesocket(http->fd); | |
2982 | # else | |
2983 | close(http->fd); | |
2984 | # endif | |
2985 | ||
2986 | http->fd = -1; | |
2987 | ||
2988 | return (-1); | |
2989 | } | |
2990 | else | |
2991 | return (ret); | |
2992 | } | |
2993 | #endif /* HAVE_SSL */ | |
2994 | ||
2995 | ||
2996 | /* | |
2997 | * 'http_wait()' - Wait for data available on a connection. | |
2998 | */ | |
2999 | ||
3000 | static int /* O - 1 if data is available, 0 otherwise */ | |
568fa3fa | 3001 | http_wait(http_t *http, /* I - Connection to server */ |
411affcf | 3002 | int msec, /* I - Milliseconds to wait */ |
3003 | int usessl) /* I - Use SSL context? */ | |
ef416fc2 | 3004 | { |
f7deaa1a | 3005 | #ifdef HAVE_POLL |
3006 | struct pollfd pfd; /* Polled file descriptor */ | |
3007 | #else | |
3008 | fd_set input_set; /* select() input set */ | |
ef416fc2 | 3009 | struct timeval timeout; /* Timeout */ |
f7deaa1a | 3010 | #endif /* HAVE_POLL */ |
3011 | int nfds; /* Result from select()/poll() */ | |
ef416fc2 | 3012 | |
3013 | ||
3014 | DEBUG_printf(("http_wait(http=%p, msec=%d)\n", http, msec)); | |
3015 | ||
fa73b229 | 3016 | if (http->fd < 0) |
3017 | return (0); | |
3018 | ||
ef416fc2 | 3019 | /* |
3020 | * Check the SSL/TLS buffers for data first... | |
3021 | */ | |
3022 | ||
3023 | #ifdef HAVE_SSL | |
411affcf | 3024 | if (http->tls && usessl) |
ef416fc2 | 3025 | { |
3026 | # ifdef HAVE_LIBSSL | |
3027 | if (SSL_pending((SSL *)(http->tls))) | |
3028 | return (1); | |
3029 | # elif defined(HAVE_GNUTLS) | |
3030 | if (gnutls_record_check_pending(((http_tls_t *)(http->tls))->session)) | |
3031 | return (1); | |
3032 | # elif defined(HAVE_CDSASSL) | |
3033 | size_t bytes; /* Bytes that are available */ | |
3034 | ||
ee571f26 MS |
3035 | if (!SSLGetBufferedReadSize(((http_tls_t *)(http->tls))->session, &bytes) && |
3036 | bytes > 0) | |
ef416fc2 | 3037 | return (1); |
3038 | # endif /* HAVE_LIBSSL */ | |
3039 | } | |
3040 | #endif /* HAVE_SSL */ | |
3041 | ||
3042 | /* | |
f7deaa1a | 3043 | * Then try doing a select() or poll() to poll the socket... |
ef416fc2 | 3044 | */ |
3045 | ||
f7deaa1a | 3046 | #ifdef HAVE_POLL |
3047 | pfd.fd = http->fd; | |
3048 | pfd.events = POLLIN; | |
ef416fc2 | 3049 | |
f7deaa1a | 3050 | while ((nfds = poll(&pfd, 1, msec)) < 0 && errno == EINTR); |
ef416fc2 | 3051 | |
f7deaa1a | 3052 | #else |
ef416fc2 | 3053 | do |
3054 | { | |
f7deaa1a | 3055 | FD_ZERO(&input_set); |
3056 | FD_SET(http->fd, &input_set); | |
ef416fc2 | 3057 | |
89d46774 | 3058 | DEBUG_printf(("http_wait: msec=%d, http->fd=%d\n", msec, http->fd)); |
3059 | ||
ef416fc2 | 3060 | if (msec >= 0) |
3061 | { | |
3062 | timeout.tv_sec = msec / 1000; | |
3063 | timeout.tv_usec = (msec % 1000) * 1000; | |
3064 | ||
f7deaa1a | 3065 | nfds = select(http->fd + 1, &input_set, NULL, NULL, &timeout); |
ef416fc2 | 3066 | } |
3067 | else | |
f7deaa1a | 3068 | nfds = select(http->fd + 1, &input_set, NULL, NULL, NULL); |
89d46774 | 3069 | |
3070 | DEBUG_printf(("http_wait: select() returned %d...\n", nfds)); | |
ef416fc2 | 3071 | } |
f7deaa1a | 3072 | # ifdef WIN32 |
ef416fc2 | 3073 | while (nfds < 0 && WSAGetLastError() == WSAEINTR); |
f7deaa1a | 3074 | # else |
ef416fc2 | 3075 | while (nfds < 0 && errno == EINTR); |
f7deaa1a | 3076 | # endif /* WIN32 */ |
3077 | #endif /* HAVE_POLL */ | |
ef416fc2 | 3078 | |
89d46774 | 3079 | DEBUG_printf(("http_wait: returning with nfds=%d...\n", nfds)); |
3080 | ||
ef416fc2 | 3081 | return (nfds > 0); |
3082 | } | |
3083 | ||
3084 | ||
3085 | /* | |
3086 | * 'http_write()' - Write a buffer to a HTTP connection. | |
3087 | */ | |
3088 | ||
3089 | static int /* O - Number of bytes written */ | |
568fa3fa | 3090 | http_write(http_t *http, /* I - Connection to server */ |
ef416fc2 | 3091 | const char *buffer, /* I - Buffer for data */ |
3092 | int length) /* I - Number of bytes to write */ | |
3093 | { | |
3094 | int tbytes, /* Total bytes sent */ | |
3095 | bytes; /* Bytes sent */ | |
3096 | ||
3097 | ||
3098 | tbytes = 0; | |
3099 | ||
3100 | while (length > 0) | |
3101 | { | |
3102 | #ifdef HAVE_SSL | |
3103 | if (http->tls) | |
3104 | bytes = http_write_ssl(http, buffer, length); | |
3105 | else | |
3106 | #endif /* HAVE_SSL */ | |
3107 | bytes = send(http->fd, buffer, length, 0); | |
3108 | ||
3109 | if (bytes < 0) | |
3110 | { | |
3111 | #ifdef WIN32 | |
3112 | if (WSAGetLastError() != http->error) | |
3113 | { | |
3114 | http->error = WSAGetLastError(); | |
3115 | continue; | |
3116 | } | |
3117 | #else | |
3118 | if (errno == EINTR) | |
3119 | continue; | |
3120 | else if (errno != http->error && errno != ECONNRESET) | |
3121 | { | |
3122 | http->error = errno; | |
3123 | continue; | |
3124 | } | |
3125 | #endif /* WIN32 */ | |
3126 | ||
3127 | DEBUG_puts("http_write: error writing data...\n"); | |
3128 | ||
3129 | return (-1); | |
3130 | } | |
3131 | ||
3132 | buffer += bytes; | |
3133 | tbytes += bytes; | |
3134 | length -= bytes; | |
3135 | } | |
3136 | ||
3137 | #ifdef DEBUG | |
ae71f5de | 3138 | http_debug_hex("http_write", buffer - tbytes, tbytes); |
ef416fc2 | 3139 | #endif /* DEBUG */ |
3140 | ||
3141 | return (tbytes); | |
3142 | } | |
3143 | ||
3144 | ||
3145 | /* | |
3146 | * 'http_write_chunk()' - Write a chunked buffer. | |
3147 | */ | |
3148 | ||
3149 | static int /* O - Number bytes written */ | |
568fa3fa | 3150 | http_write_chunk(http_t *http, /* I - Connection to server */ |
ef416fc2 | 3151 | const char *buffer, /* I - Buffer to write */ |
3152 | int length) /* I - Length of buffer */ | |
3153 | { | |
3154 | char header[255]; /* Chunk header */ | |
3155 | int bytes; /* Bytes written */ | |
3156 | ||
3157 | DEBUG_printf(("http_write_chunk(http=%p, buffer=%p, length=%d)\n", | |
3158 | http, buffer, length)); | |
3159 | ||
3160 | /* | |
3161 | * Write the chunk header, data, and trailer. | |
3162 | */ | |
3163 | ||
3164 | sprintf(header, "%x\r\n", length); | |
b86bc4cf | 3165 | if (http_write(http, header, (int)strlen(header)) < 0) |
ef416fc2 | 3166 | { |
3167 | DEBUG_puts(" http_write of length failed!"); | |
3168 | return (-1); | |
3169 | } | |
3170 | ||
3171 | if ((bytes = http_write(http, buffer, length)) < 0) | |
3172 | { | |
3173 | DEBUG_puts(" http_write of buffer failed!"); | |
3174 | return (-1); | |
3175 | } | |
3176 | ||
3177 | if (http_write(http, "\r\n", 2) < 0) | |
3178 | { | |
3179 | DEBUG_puts(" http_write of CR LF failed!"); | |
3180 | return (-1); | |
3181 | } | |
3182 | ||
3183 | return (bytes); | |
3184 | } | |
3185 | ||
3186 | ||
3187 | #ifdef HAVE_SSL | |
3188 | /* | |
3189 | * 'http_write_ssl()' - Write to a SSL/TLS connection. | |
3190 | */ | |
3191 | ||
3192 | static int /* O - Bytes written */ | |
568fa3fa | 3193 | http_write_ssl(http_t *http, /* I - Connection to server */ |
ef416fc2 | 3194 | const char *buf, /* I - Buffer holding data */ |
3195 | int len) /* I - Length of buffer */ | |
3196 | { | |
3197 | # if defined(HAVE_LIBSSL) | |
3198 | return (SSL_write((SSL *)(http->tls), buf, len)); | |
3199 | ||
3200 | # elif defined(HAVE_GNUTLS) | |
3201 | return (gnutls_record_send(((http_tls_t *)(http->tls))->session, buf, len)); | |
3202 | # elif defined(HAVE_CDSASSL) | |
fa73b229 | 3203 | int result; /* Return value */ |
ef416fc2 | 3204 | OSStatus error; /* Error info */ |
3205 | size_t processed; /* Number of bytes processed */ | |
3206 | ||
3207 | ||
89d46774 | 3208 | error = SSLWrite(((http_tls_t *)http->tls)->session, buf, len, &processed); |
ef416fc2 | 3209 | |
fa73b229 | 3210 | switch (error) |
ef416fc2 | 3211 | { |
fa73b229 | 3212 | case 0 : |
3213 | result = (int)processed; | |
3214 | break; | |
3215 | case errSSLClosedGraceful : | |
3216 | result = 0; | |
3217 | break; | |
3218 | case errSSLWouldBlock : | |
b423cd4c | 3219 | if (processed) |
3220 | result = (int)processed; | |
3221 | else | |
3222 | { | |
3223 | result = -1; | |
3224 | errno = EINTR; | |
3225 | } | |
fa73b229 | 3226 | break; |
3227 | default : | |
3228 | errno = EPIPE; | |
3229 | result = -1; | |
3230 | break; | |
ef416fc2 | 3231 | } |
fa73b229 | 3232 | |
3233 | return (result); | |
ef416fc2 | 3234 | # endif /* HAVE_LIBSSL */ |
3235 | } | |
3236 | #endif /* HAVE_SSL */ | |
3237 | ||
3238 | ||
3239 | /* | |
75bd9771 | 3240 | * End of "$Id: http.c 7661 2008-06-16 21:46:51Z mike $". |
ef416fc2 | 3241 | */ |