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ef416fc2 | 1 | /* |
355e94dc | 2 | * "$Id: http.c 6724 2007-07-25 20:39:33Z mike $" |
ef416fc2 | 3 | * |
4 | * HTTP routines for the Common UNIX Printing System (CUPS). | |
5 | * | |
bc44d920 | 6 | * Copyright 2007 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. | |
ef416fc2 | 80 | * http_field() - Return the field index for a field name. |
81 | * http_read_ssl() - Read from a SSL/TLS connection. | |
82 | * http_send() - Send a request with all fields and the trailing | |
83 | * blank line. | |
84 | * http_setup_ssl() - Set up SSL/TLS on a connection. | |
85 | * http_shutdown_ssl() - Shut down SSL/TLS on a connection. | |
86 | * http_upgrade() - Force upgrade to TLS encryption. | |
87 | * http_wait() - Wait for data available on a connection. | |
88 | * http_write() - Write data to a connection. | |
89 | * http_write_ssl() - Write to a SSL/TLS connection. | |
90 | */ | |
91 | ||
92 | /* | |
93 | * Include necessary headers... | |
94 | */ | |
95 | ||
96 | #include "http-private.h" | |
97 | #include "globals.h" | |
98 | #include "debug.h" | |
99 | #include <stdlib.h> | |
100 | #include <fcntl.h> | |
101 | #include <errno.h> | |
102 | #ifndef WIN32 | |
103 | # include <signal.h> | |
104 | # include <sys/time.h> | |
105 | # include <sys/resource.h> | |
106 | #endif /* !WIN32 */ | |
f7deaa1a | 107 | #ifdef HAVE_POLL |
108 | # include <sys/poll.h> | |
109 | #endif /* HAVE_POLL */ | |
ef416fc2 | 110 | |
111 | ||
112 | /* | |
113 | * Some operating systems have done away with the Fxxxx constants for | |
114 | * the fcntl() call; this works around that "feature"... | |
115 | */ | |
116 | ||
117 | #ifndef FNONBLK | |
118 | # define FNONBLK O_NONBLOCK | |
119 | #endif /* !FNONBLK */ | |
120 | ||
121 | ||
122 | /* | |
123 | * Local functions... | |
124 | */ | |
125 | ||
126 | static http_field_t http_field(const char *name); | |
127 | static int http_send(http_t *http, http_state_t request, | |
128 | const char *uri); | |
411affcf | 129 | static int http_wait(http_t *http, int msec, int usessl); |
ef416fc2 | 130 | static int http_write(http_t *http, const char *buffer, |
131 | int length); | |
132 | static int http_write_chunk(http_t *http, const char *buffer, | |
133 | int length); | |
134 | #ifdef HAVE_SSL | |
135 | static int http_read_ssl(http_t *http, char *buf, int len); | |
136 | static int http_setup_ssl(http_t *http); | |
137 | static void http_shutdown_ssl(http_t *http); | |
138 | static int http_upgrade(http_t *http); | |
139 | static int http_write_ssl(http_t *http, const char *buf, int len); | |
140 | #endif /* HAVE_SSL */ | |
141 | ||
142 | ||
143 | /* | |
144 | * Local globals... | |
145 | */ | |
146 | ||
147 | static const char * const http_fields[] = | |
148 | { | |
149 | "Accept-Language", | |
150 | "Accept-Ranges", | |
151 | "Authorization", | |
152 | "Connection", | |
153 | "Content-Encoding", | |
154 | "Content-Language", | |
155 | "Content-Length", | |
156 | "Content-Location", | |
157 | "Content-MD5", | |
158 | "Content-Range", | |
159 | "Content-Type", | |
160 | "Content-Version", | |
161 | "Date", | |
162 | "Host", | |
163 | "If-Modified-Since", | |
164 | "If-Unmodified-since", | |
165 | "Keep-Alive", | |
166 | "Last-Modified", | |
167 | "Link", | |
168 | "Location", | |
169 | "Range", | |
170 | "Referer", | |
171 | "Retry-After", | |
172 | "Transfer-Encoding", | |
173 | "Upgrade", | |
174 | "User-Agent", | |
175 | "WWW-Authenticate" | |
176 | }; | |
177 | ||
178 | ||
411affcf | 179 | #if defined(HAVE_SSL) && defined(HAVE_LIBSSL) |
180 | /* | |
181 | * BIO methods for OpenSSL... | |
182 | */ | |
183 | ||
184 | static int http_bio_write(BIO *h, const char *buf, int num); | |
185 | static int http_bio_read(BIO *h, char *buf, int size); | |
186 | static int http_bio_puts(BIO *h, const char *str); | |
187 | static long http_bio_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
188 | static int http_bio_new(BIO *h); | |
189 | static int http_bio_free(BIO *data); | |
190 | ||
191 | static BIO_METHOD http_bio_methods = | |
192 | { | |
193 | BIO_TYPE_SOCKET, | |
194 | "http", | |
195 | http_bio_write, | |
196 | http_bio_read, | |
197 | http_bio_puts, | |
198 | NULL, /* http_bio_gets, */ | |
199 | http_bio_ctrl, | |
200 | http_bio_new, | |
201 | http_bio_free, | |
202 | NULL, | |
203 | }; | |
204 | ||
205 | ||
206 | /* | |
207 | * '_httpBIOMethods()' - Get the OpenSSL BIO methods for HTTP connections. | |
208 | */ | |
209 | ||
210 | BIO_METHOD * /* O - BIO methods for OpenSSL */ | |
211 | _httpBIOMethods(void) | |
212 | { | |
213 | return (&http_bio_methods); | |
214 | } | |
215 | #endif /* HAVE_SSL && HAVE_LIBSSL */ | |
216 | ||
217 | ||
ecdc0628 | 218 | /* |
219 | * 'httpBlocking()' - Set blocking/non-blocking behavior on a connection. | |
220 | */ | |
221 | ||
222 | void | |
223 | httpBlocking(http_t *http, /* I - HTTP connection */ | |
224 | int b) /* I - 1 = blocking, 0 = non-blocking */ | |
225 | { | |
226 | if (http) | |
227 | http->blocking = b; | |
228 | } | |
229 | ||
230 | ||
ef416fc2 | 231 | /* |
232 | * 'httpCheck()' - Check to see if there is a pending response from the server. | |
233 | */ | |
234 | ||
ecdc0628 | 235 | int /* O - 0 = no data, 1 = data available */ |
236 | httpCheck(http_t *http) /* I - HTTP connection */ | |
ef416fc2 | 237 | { |
238 | return (httpWait(http, 0)); | |
239 | } | |
240 | ||
241 | ||
242 | /* | |
243 | * 'httpClearCookie()' - Clear the cookie value(s). | |
244 | * | |
245 | * @since CUPS 1.1.19@ | |
246 | */ | |
247 | ||
248 | void | |
ecdc0628 | 249 | httpClearCookie(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 250 | { |
251 | if (!http) | |
252 | return; | |
253 | ||
254 | if (http->cookie) | |
255 | { | |
256 | free(http->cookie); | |
257 | http->cookie = NULL; | |
258 | } | |
259 | } | |
260 | ||
261 | ||
ecdc0628 | 262 | /* |
263 | * 'httpClearFields()' - Clear HTTP request fields. | |
264 | */ | |
265 | ||
266 | void | |
267 | httpClearFields(http_t *http) /* I - HTTP connection */ | |
268 | { | |
269 | if (http) | |
270 | { | |
271 | memset(http->fields, 0, sizeof(http->fields)); | |
07725fee | 272 | if (http->hostname[0] == '/') |
273 | httpSetField(http, HTTP_FIELD_HOST, "localhost"); | |
274 | else | |
275 | httpSetField(http, HTTP_FIELD_HOST, http->hostname); | |
b423cd4c | 276 | |
f7deaa1a | 277 | if (http->field_authorization) |
278 | { | |
279 | free(http->field_authorization); | |
280 | http->field_authorization = NULL; | |
281 | } | |
282 | ||
b423cd4c | 283 | http->expect = (http_status_t)0; |
ecdc0628 | 284 | } |
285 | } | |
286 | ||
287 | ||
ef416fc2 | 288 | /* |
289 | * 'httpClose()' - Close an HTTP connection... | |
290 | */ | |
291 | ||
292 | void | |
ecdc0628 | 293 | httpClose(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 294 | { |
f7deaa1a | 295 | #ifdef HAVE_GSSAPI |
296 | OM_uint32 minor_status, /* Minor status code */ | |
297 | major_status; /* Major status code */ | |
298 | #endif /* HAVE_GSSAPI */ | |
299 | ||
300 | ||
ef416fc2 | 301 | DEBUG_printf(("httpClose(http=%p)\n", http)); |
302 | ||
303 | if (!http) | |
304 | return; | |
305 | ||
306 | httpAddrFreeList(http->addrlist); | |
307 | ||
ef416fc2 | 308 | if (http->cookie) |
309 | free(http->cookie); | |
310 | ||
311 | #ifdef HAVE_SSL | |
312 | if (http->tls) | |
313 | http_shutdown_ssl(http); | |
314 | #endif /* HAVE_SSL */ | |
315 | ||
316 | #ifdef WIN32 | |
317 | closesocket(http->fd); | |
318 | #else | |
319 | close(http->fd); | |
320 | #endif /* WIN32 */ | |
321 | ||
f7deaa1a | 322 | #ifdef HAVE_GSSAPI |
323 | if (http->gssctx != GSS_C_NO_CONTEXT) | |
324 | major_status = gss_delete_sec_context(&minor_status, &http->gssctx, | |
325 | GSS_C_NO_BUFFER); | |
326 | ||
327 | if (http->gssname != GSS_C_NO_NAME) | |
328 | major_status = gss_release_name(&minor_status, &http->gssname); | |
329 | #endif /* HAVE_GSSAPI */ | |
330 | ||
b94498cf | 331 | #ifdef HAVE_AUTHORIZATION_H |
332 | if (http->auth_ref) | |
333 | AuthorizationFree(http->auth_ref, kAuthorizationFlagDefaults); | |
334 | #endif /* HAVE_AUTHORIZATION_H */ | |
335 | ||
f7deaa1a | 336 | httpClearFields(http); |
337 | ||
338 | if (http->authstring && http->authstring != http->_authstring) | |
339 | free(http->authstring); | |
340 | ||
ef416fc2 | 341 | free(http); |
342 | } | |
343 | ||
344 | ||
345 | /* | |
346 | * 'httpConnect()' - Connect to a HTTP server. | |
347 | */ | |
348 | ||
349 | http_t * /* O - New HTTP connection */ | |
350 | httpConnect(const char *host, /* I - Host to connect to */ | |
351 | int port) /* I - Port number */ | |
352 | { | |
353 | http_encryption_t encryption; /* Type of encryption to use */ | |
354 | ||
355 | ||
356 | /* | |
357 | * Set the default encryption status... | |
358 | */ | |
359 | ||
360 | if (port == 443) | |
361 | encryption = HTTP_ENCRYPT_ALWAYS; | |
362 | else | |
363 | encryption = HTTP_ENCRYPT_IF_REQUESTED; | |
364 | ||
365 | return (httpConnectEncrypt(host, port, encryption)); | |
366 | } | |
367 | ||
368 | ||
369 | /* | |
370 | * 'httpConnectEncrypt()' - Connect to a HTTP server using encryption. | |
371 | */ | |
372 | ||
373 | http_t * /* O - New HTTP connection */ | |
374 | httpConnectEncrypt( | |
375 | const char *host, /* I - Host to connect to */ | |
376 | int port, /* I - Port number */ | |
377 | http_encryption_t encryption) /* I - Type of encryption to use */ | |
378 | { | |
379 | http_t *http; /* New HTTP connection */ | |
380 | http_addrlist_t *addrlist; /* Host address data */ | |
381 | char service[255]; /* Service name */ | |
382 | ||
383 | ||
384 | DEBUG_printf(("httpConnectEncrypt(host=\"%s\", port=%d, encryption=%d)\n", | |
385 | host ? host : "(null)", port, encryption)); | |
386 | ||
387 | if (!host) | |
388 | return (NULL); | |
389 | ||
390 | httpInitialize(); | |
391 | ||
392 | /* | |
393 | * Lookup the host... | |
394 | */ | |
395 | ||
396 | sprintf(service, "%d", port); | |
397 | ||
398 | if ((addrlist = httpAddrGetList(host, AF_UNSPEC, service)) == NULL) | |
399 | return (NULL); | |
400 | ||
401 | /* | |
402 | * Allocate memory for the structure... | |
403 | */ | |
404 | ||
405 | http = calloc(sizeof(http_t), 1); | |
406 | if (http == NULL) | |
407 | return (NULL); | |
408 | ||
409 | http->version = HTTP_1_1; | |
410 | http->blocking = 1; | |
411 | http->activity = time(NULL); | |
412 | http->fd = -1; | |
413 | ||
f7deaa1a | 414 | #ifdef HAVE_GSSAPI |
415 | http->gssctx = GSS_C_NO_CONTEXT; | |
416 | http->gssname = GSS_C_NO_NAME; | |
417 | #endif /* HAVE_GSSAPI */ | |
418 | ||
ef416fc2 | 419 | /* |
420 | * Set the encryption status... | |
421 | */ | |
422 | ||
423 | if (port == 443) /* Always use encryption for https */ | |
424 | http->encryption = HTTP_ENCRYPT_ALWAYS; | |
425 | else | |
426 | http->encryption = encryption; | |
427 | ||
428 | /* | |
429 | * Loop through the addresses we have until one of them connects... | |
430 | */ | |
431 | ||
432 | strlcpy(http->hostname, host, sizeof(http->hostname)); | |
433 | ||
434 | /* | |
435 | * Connect to the remote system... | |
436 | */ | |
437 | ||
438 | http->addrlist = addrlist; | |
439 | ||
440 | if (!httpReconnect(http)) | |
441 | return (http); | |
442 | ||
443 | /* | |
444 | * Could not connect to any known address - bail out! | |
445 | */ | |
446 | ||
447 | httpAddrFreeList(addrlist); | |
448 | ||
449 | free(http); | |
450 | ||
451 | return (NULL); | |
452 | } | |
453 | ||
454 | ||
455 | /* | |
456 | * 'httpDelete()' - Send a DELETE request to the server. | |
457 | */ | |
458 | ||
459 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 460 | httpDelete(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 461 | const char *uri) /* I - URI to delete */ |
462 | { | |
463 | return (http_send(http, HTTP_DELETE, uri)); | |
464 | } | |
465 | ||
466 | ||
467 | /* | |
468 | * 'httpEncryption()' - Set the required encryption on the link. | |
469 | */ | |
470 | ||
471 | int /* O - -1 on error, 0 on success */ | |
ecdc0628 | 472 | httpEncryption(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 473 | http_encryption_t e) /* I - New encryption preference */ |
474 | { | |
475 | DEBUG_printf(("httpEncryption(http=%p, e=%d)\n", http, e)); | |
476 | ||
477 | #ifdef HAVE_SSL | |
478 | if (!http) | |
479 | return (0); | |
480 | ||
481 | http->encryption = e; | |
482 | ||
483 | if ((http->encryption == HTTP_ENCRYPT_ALWAYS && !http->tls) || | |
484 | (http->encryption == HTTP_ENCRYPT_NEVER && http->tls)) | |
485 | return (httpReconnect(http)); | |
486 | else if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls) | |
487 | return (http_upgrade(http)); | |
488 | else | |
489 | return (0); | |
490 | #else | |
491 | if (e == HTTP_ENCRYPT_ALWAYS || e == HTTP_ENCRYPT_REQUIRED) | |
492 | return (-1); | |
493 | else | |
494 | return (0); | |
495 | #endif /* HAVE_SSL */ | |
496 | } | |
497 | ||
498 | ||
ecdc0628 | 499 | /* |
500 | * 'httpError()' - Get the last error on a connection. | |
501 | */ | |
502 | ||
503 | int /* O - Error code (errno) value */ | |
504 | httpError(http_t *http) /* I - HTTP connection */ | |
505 | { | |
506 | if (http) | |
507 | return (http->error); | |
508 | else | |
509 | return (EINVAL); | |
510 | } | |
511 | ||
512 | ||
ef416fc2 | 513 | /* |
514 | * 'httpFlush()' - Flush data from a HTTP connection. | |
515 | */ | |
516 | ||
517 | void | |
ecdc0628 | 518 | httpFlush(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 519 | { |
520 | char buffer[8192]; /* Junk buffer */ | |
fa73b229 | 521 | int blocking; /* To block or not to block */ |
ef416fc2 | 522 | |
523 | ||
524 | DEBUG_printf(("httpFlush(http=%p), state=%d\n", http, http->state)); | |
525 | ||
fa73b229 | 526 | /* |
527 | * Temporarily set non-blocking mode so we don't get stuck in httpRead()... | |
528 | */ | |
529 | ||
530 | blocking = http->blocking; | |
531 | http->blocking = 0; | |
532 | ||
533 | /* | |
534 | * Read any data we can... | |
535 | */ | |
536 | ||
a4d04587 | 537 | while (httpRead2(http, buffer, sizeof(buffer)) > 0); |
fa73b229 | 538 | |
539 | /* | |
540 | * Restore blocking and reset the connection if we didn't get all of | |
541 | * the remaining data... | |
542 | */ | |
543 | ||
544 | http->blocking = blocking; | |
545 | ||
546 | if (http->state != HTTP_WAITING && http->fd >= 0) | |
547 | { | |
548 | /* | |
549 | * Didn't get the data back, so close the current connection. | |
550 | */ | |
551 | ||
552 | http->state = HTTP_WAITING; | |
553 | ||
554 | #ifdef HAVE_SSL | |
555 | if (http->tls) | |
556 | http_shutdown_ssl(http); | |
557 | #endif /* HAVE_SSL */ | |
558 | ||
559 | #ifdef WIN32 | |
560 | closesocket(http->fd); | |
561 | #else | |
562 | close(http->fd); | |
563 | #endif /* WIN32 */ | |
564 | ||
565 | http->fd = -1; | |
566 | } | |
ef416fc2 | 567 | } |
568 | ||
569 | ||
570 | /* | |
571 | * 'httpFlushWrite()' - Flush data in write buffer. | |
572 | * | |
573 | * @since CUPS 1.2@ | |
574 | */ | |
575 | ||
576 | int /* O - Bytes written or -1 on error */ | |
ecdc0628 | 577 | httpFlushWrite(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 578 | { |
579 | int bytes; /* Bytes written */ | |
580 | ||
581 | ||
582 | DEBUG_printf(("httpFlushWrite(http=%p)\n", http)); | |
583 | ||
584 | if (!http || !http->wused) | |
585 | return (0); | |
586 | ||
587 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
588 | bytes = http_write_chunk(http, http->wbuffer, http->wused); | |
589 | else | |
590 | bytes = http_write(http, http->wbuffer, http->wused); | |
591 | ||
592 | http->wused = 0; | |
593 | ||
594 | return (bytes); | |
595 | } | |
596 | ||
597 | ||
598 | /* | |
599 | * 'httpGet()' - Send a GET request to the server. | |
600 | */ | |
601 | ||
602 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 603 | httpGet(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 604 | const char *uri) /* I - URI to get */ |
605 | { | |
606 | return (http_send(http, HTTP_GET, uri)); | |
607 | } | |
608 | ||
609 | ||
355e94dc MS |
610 | /* |
611 | * 'httpGetAuthString()' - Get the current authorization string. | |
612 | * | |
613 | * The authorization string is set by cupsDoAuthentication() and | |
614 | * httpSetAuthString(). Use httpGetAuthString() to retrieve the | |
615 | * string to use with httpSetField() for the HTTP_FIELD_AUTHORIZATION | |
616 | * value. | |
617 | * | |
618 | * @since CUPS 1.3@ | |
619 | */ | |
620 | ||
621 | char * /* O - Authorization string */ | |
622 | httpGetAuthString(http_t *http) /* I - HTTP connection */ | |
623 | { | |
624 | if (http) | |
625 | return (http->authstring); | |
626 | else | |
627 | return (NULL); | |
628 | } | |
629 | ||
630 | ||
ecdc0628 | 631 | /* |
632 | * 'httpGetBlocking()' - Get the blocking/non-block state of a connection. | |
633 | * | |
634 | * @since CUPS 1.2@ | |
635 | */ | |
636 | ||
637 | int /* O - 1 if blocking, 0 if non-blocking */ | |
638 | httpGetBlocking(http_t *http) /* I - HTTP connection */ | |
639 | { | |
640 | return (http ? http->blocking : 0); | |
641 | } | |
642 | ||
643 | ||
644 | /* | |
645 | * 'httpGetCookie()' - Get any cookie data from the response. | |
757d2cad | 646 | * |
647 | * @since CUPS 1.1.19@ | |
ecdc0628 | 648 | */ |
649 | ||
650 | const char * /* O - Cookie data or NULL */ | |
651 | httpGetCookie(http_t *http) /* I - HTTP connecion */ | |
652 | { | |
653 | return (http ? http->cookie : NULL); | |
654 | } | |
655 | ||
656 | ||
657 | /* | |
658 | * 'httpGetFd()' - Get the file descriptor associated with a connection. | |
659 | * | |
660 | * @since CUPS 1.2@ | |
661 | */ | |
662 | ||
663 | int /* O - File descriptor or -1 if none */ | |
664 | httpGetFd(http_t *http) /* I - HTTP connection */ | |
665 | { | |
666 | return (http ? http->fd : -1); | |
667 | } | |
668 | ||
669 | ||
670 | /* | |
671 | * 'httpGetField()' - Get a field value from a request/response. | |
672 | */ | |
673 | ||
674 | const char * /* O - Field value */ | |
675 | httpGetField(http_t *http, /* I - HTTP connection */ | |
676 | http_field_t field) /* I - Field to get */ | |
677 | { | |
678 | if (!http || field <= HTTP_FIELD_UNKNOWN || field >= HTTP_FIELD_MAX) | |
679 | return (NULL); | |
f7deaa1a | 680 | else if (field == HTTP_FIELD_AUTHORIZATION && |
681 | http->field_authorization) | |
682 | { | |
683 | /* | |
684 | * Special case for WWW-Authenticate: as its contents can be | |
685 | * longer than HTTP_MAX_VALUE... | |
686 | */ | |
687 | ||
688 | return (http->field_authorization); | |
689 | } | |
ecdc0628 | 690 | else |
691 | return (http->fields[field]); | |
692 | } | |
693 | ||
694 | ||
695 | /* | |
696 | * 'httpGetLength()' - Get the amount of data remaining from the | |
697 | * content-length or transfer-encoding fields. | |
698 | * | |
699 | * This function is deprecated and will not return lengths larger than | |
700 | * 2^31 - 1; use httpGetLength2() instead. | |
701 | * | |
702 | * @deprecated@ | |
703 | */ | |
704 | ||
705 | int /* O - Content length */ | |
706 | httpGetLength(http_t *http) /* I - HTTP connection */ | |
707 | { | |
708 | /* | |
709 | * Get the read content length and return the 32-bit value. | |
710 | */ | |
711 | ||
712 | if (http) | |
713 | { | |
714 | httpGetLength2(http); | |
715 | ||
716 | return (http->_data_remaining); | |
717 | } | |
718 | else | |
719 | return (-1); | |
720 | } | |
721 | ||
722 | ||
723 | /* | |
724 | * 'httpGetLength2()' - Get the amount of data remaining from the | |
725 | * content-length or transfer-encoding fields. | |
726 | * | |
727 | * This function returns the complete content length, even for | |
728 | * content larger than 2^31 - 1. | |
729 | * | |
730 | * @since CUPS 1.2@ | |
731 | */ | |
732 | ||
733 | off_t /* O - Content length */ | |
734 | httpGetLength2(http_t *http) /* I - HTTP connection */ | |
735 | { | |
736 | DEBUG_printf(("httpGetLength2(http=%p), state=%d\n", http, http->state)); | |
737 | ||
738 | if (!http) | |
739 | return (-1); | |
740 | ||
741 | if (!strcasecmp(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked")) | |
742 | { | |
743 | DEBUG_puts("httpGetLength2: chunked request!"); | |
744 | ||
745 | http->data_encoding = HTTP_ENCODE_CHUNKED; | |
746 | http->data_remaining = 0; | |
747 | } | |
748 | else | |
749 | { | |
750 | http->data_encoding = HTTP_ENCODE_LENGTH; | |
751 | ||
752 | /* | |
753 | * The following is a hack for HTTP servers that don't send a | |
754 | * content-length or transfer-encoding field... | |
755 | * | |
756 | * If there is no content-length then the connection must close | |
757 | * after the transfer is complete... | |
758 | */ | |
759 | ||
b86bc4cf | 760 | if (!http->fields[HTTP_FIELD_CONTENT_LENGTH][0]) |
761 | { | |
762 | /* | |
763 | * Default content length is 0 for errors and 2^31-1 for other | |
764 | * successful requests... | |
765 | */ | |
766 | ||
767 | if (http->status >= HTTP_MULTIPLE_CHOICES) | |
768 | http->data_remaining = 0; | |
769 | else | |
770 | http->data_remaining = 2147483647; | |
771 | } | |
ecdc0628 | 772 | else |
773 | http->data_remaining = strtoll(http->fields[HTTP_FIELD_CONTENT_LENGTH], | |
774 | NULL, 10); | |
775 | ||
776 | DEBUG_printf(("httpGetLength2: content_length=" CUPS_LLFMT "\n", | |
777 | CUPS_LLCAST http->data_remaining)); | |
778 | } | |
779 | ||
780 | if (http->data_remaining <= INT_MAX) | |
781 | http->_data_remaining = (int)http->data_remaining; | |
782 | else | |
783 | http->_data_remaining = INT_MAX; | |
784 | ||
785 | return (http->data_remaining); | |
786 | } | |
787 | ||
788 | ||
789 | /* | |
790 | * 'httpGetStatus()' - Get the status of the last HTTP request. | |
791 | * | |
792 | * @since CUPS 1.2@ | |
793 | */ | |
794 | ||
795 | http_status_t /* O - HTTP status */ | |
796 | httpGetStatus(http_t *http) /* I - HTTP connection */ | |
797 | { | |
798 | return (http ? http->status : HTTP_ERROR); | |
799 | } | |
800 | ||
801 | ||
ef416fc2 | 802 | /* |
803 | * 'httpGetSubField()' - Get a sub-field value. | |
804 | * | |
805 | * @deprecated@ | |
806 | */ | |
807 | ||
808 | char * /* O - Value or NULL */ | |
ecdc0628 | 809 | httpGetSubField(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 810 | http_field_t field, /* I - Field index */ |
811 | const char *name, /* I - Name of sub-field */ | |
812 | char *value) /* O - Value string */ | |
813 | { | |
814 | return (httpGetSubField2(http, field, name, value, HTTP_MAX_VALUE)); | |
815 | } | |
816 | ||
817 | ||
818 | /* | |
819 | * 'httpGetSubField2()' - Get a sub-field value. | |
820 | * | |
821 | * @since CUPS 1.2@ | |
822 | */ | |
823 | ||
824 | char * /* O - Value or NULL */ | |
ecdc0628 | 825 | httpGetSubField2(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 826 | http_field_t field, /* I - Field index */ |
827 | const char *name, /* I - Name of sub-field */ | |
828 | char *value, /* O - Value string */ | |
829 | int valuelen) /* I - Size of value buffer */ | |
830 | { | |
831 | const char *fptr; /* Pointer into field */ | |
832 | char temp[HTTP_MAX_VALUE], /* Temporary buffer for name */ | |
833 | *ptr, /* Pointer into string buffer */ | |
834 | *end; /* End of value buffer */ | |
835 | ||
836 | DEBUG_printf(("httpGetSubField2(http=%p, field=%d, name=\"%s\", value=%p, valuelen=%d)\n", | |
837 | http, field, name, value, valuelen)); | |
838 | ||
839 | if (!http || !name || !value || valuelen < 2 || | |
ecdc0628 | 840 | field <= HTTP_FIELD_UNKNOWN || field >= HTTP_FIELD_MAX) |
ef416fc2 | 841 | return (NULL); |
842 | ||
843 | end = value + valuelen - 1; | |
844 | ||
845 | for (fptr = http->fields[field]; *fptr;) | |
846 | { | |
847 | /* | |
848 | * Skip leading whitespace... | |
849 | */ | |
850 | ||
851 | while (isspace(*fptr & 255)) | |
852 | fptr ++; | |
853 | ||
854 | if (*fptr == ',') | |
855 | { | |
856 | fptr ++; | |
857 | continue; | |
858 | } | |
859 | ||
860 | /* | |
861 | * Get the sub-field name... | |
862 | */ | |
863 | ||
864 | for (ptr = temp; | |
865 | *fptr && *fptr != '=' && !isspace(*fptr & 255) && | |
866 | ptr < (temp + sizeof(temp) - 1); | |
867 | *ptr++ = *fptr++); | |
868 | ||
869 | *ptr = '\0'; | |
870 | ||
871 | DEBUG_printf(("httpGetSubField: name=\"%s\"\n", temp)); | |
872 | ||
873 | /* | |
874 | * Skip trailing chars up to the '='... | |
875 | */ | |
876 | ||
877 | while (isspace(*fptr & 255)) | |
878 | fptr ++; | |
879 | ||
880 | if (!*fptr) | |
881 | break; | |
882 | ||
883 | if (*fptr != '=') | |
884 | continue; | |
885 | ||
886 | /* | |
887 | * Skip = and leading whitespace... | |
888 | */ | |
889 | ||
890 | fptr ++; | |
891 | ||
892 | while (isspace(*fptr & 255)) | |
893 | fptr ++; | |
894 | ||
895 | if (*fptr == '\"') | |
896 | { | |
897 | /* | |
898 | * Read quoted string... | |
899 | */ | |
900 | ||
901 | for (ptr = value, fptr ++; | |
902 | *fptr && *fptr != '\"' && ptr < end; | |
903 | *ptr++ = *fptr++); | |
904 | ||
905 | *ptr = '\0'; | |
906 | ||
907 | while (*fptr && *fptr != '\"') | |
908 | fptr ++; | |
909 | ||
910 | if (*fptr) | |
911 | fptr ++; | |
912 | } | |
913 | else | |
914 | { | |
915 | /* | |
916 | * Read unquoted string... | |
917 | */ | |
918 | ||
919 | for (ptr = value; | |
920 | *fptr && !isspace(*fptr & 255) && *fptr != ',' && ptr < end; | |
921 | *ptr++ = *fptr++); | |
922 | ||
923 | *ptr = '\0'; | |
924 | ||
925 | while (*fptr && !isspace(*fptr & 255) && *fptr != ',') | |
926 | fptr ++; | |
927 | } | |
928 | ||
929 | DEBUG_printf(("httpGetSubField: value=\"%s\"\n", value)); | |
930 | ||
931 | /* | |
932 | * See if this is the one... | |
933 | */ | |
934 | ||
935 | if (!strcmp(name, temp)) | |
936 | return (value); | |
937 | } | |
938 | ||
939 | value[0] = '\0'; | |
940 | ||
941 | return (NULL); | |
942 | } | |
943 | ||
944 | ||
ef416fc2 | 945 | /* |
946 | * 'httpGets()' - Get a line of text from a HTTP connection. | |
947 | */ | |
948 | ||
949 | char * /* O - Line or NULL */ | |
950 | httpGets(char *line, /* I - Line to read into */ | |
951 | int length, /* I - Max length of buffer */ | |
ecdc0628 | 952 | http_t *http) /* I - HTTP connection */ |
ef416fc2 | 953 | { |
954 | char *lineptr, /* Pointer into line */ | |
955 | *lineend, /* End of line */ | |
956 | *bufptr, /* Pointer into input buffer */ | |
957 | *bufend; /* Pointer to end of buffer */ | |
958 | int bytes, /* Number of bytes read */ | |
959 | eol; /* End-of-line? */ | |
960 | ||
961 | ||
962 | DEBUG_printf(("httpGets(line=%p, length=%d, http=%p)\n", line, length, http)); | |
963 | ||
964 | if (http == NULL || line == NULL) | |
965 | return (NULL); | |
966 | ||
967 | /* | |
968 | * Read a line from the buffer... | |
969 | */ | |
970 | ||
971 | lineptr = line; | |
972 | lineend = line + length - 1; | |
973 | eol = 0; | |
974 | ||
975 | while (lineptr < lineend) | |
976 | { | |
977 | /* | |
978 | * Pre-load the buffer as needed... | |
979 | */ | |
980 | ||
981 | #ifdef WIN32 | |
982 | WSASetLastError(0); | |
983 | #else | |
984 | errno = 0; | |
985 | #endif /* WIN32 */ | |
986 | ||
987 | while (http->used == 0) | |
988 | { | |
989 | /* | |
990 | * No newline; see if there is more data to be read... | |
991 | */ | |
992 | ||
411affcf | 993 | if (!http->blocking && !http_wait(http, 10000, 1)) |
89d46774 | 994 | { |
995 | DEBUG_puts("httpGets: Timed out!"); | |
b86bc4cf | 996 | #ifdef WIN32 |
997 | http->error = WSAETIMEDOUT; | |
998 | #else | |
89d46774 | 999 | http->error = ETIMEDOUT; |
b86bc4cf | 1000 | #endif /* WIN32 */ |
ef416fc2 | 1001 | return (NULL); |
89d46774 | 1002 | } |
ef416fc2 | 1003 | |
1004 | #ifdef HAVE_SSL | |
1005 | if (http->tls) | |
1006 | bytes = http_read_ssl(http, http->buffer + http->used, | |
1007 | HTTP_MAX_BUFFER - http->used); | |
1008 | else | |
1009 | #endif /* HAVE_SSL */ | |
1010 | bytes = recv(http->fd, http->buffer + http->used, | |
1011 | HTTP_MAX_BUFFER - http->used, 0); | |
1012 | ||
1013 | DEBUG_printf(("httpGets: read %d bytes...\n", bytes)); | |
1014 | ||
1015 | if (bytes < 0) | |
1016 | { | |
1017 | /* | |
1018 | * Nope, can't get a line this time... | |
1019 | */ | |
1020 | ||
1021 | #ifdef WIN32 | |
1022 | if (WSAGetLastError() != http->error) | |
1023 | { | |
1024 | http->error = WSAGetLastError(); | |
1025 | continue; | |
1026 | } | |
1027 | ||
1028 | DEBUG_printf(("httpGets: recv() error %d!\n", WSAGetLastError())); | |
1029 | #else | |
1030 | DEBUG_printf(("httpGets: recv() error %d!\n", errno)); | |
1031 | ||
1032 | if (errno == EINTR) | |
1033 | continue; | |
1034 | else if (errno != http->error) | |
1035 | { | |
1036 | http->error = errno; | |
1037 | continue; | |
1038 | } | |
1039 | #endif /* WIN32 */ | |
1040 | ||
1041 | return (NULL); | |
1042 | } | |
1043 | else if (bytes == 0) | |
1044 | { | |
1045 | http->error = EPIPE; | |
1046 | ||
1047 | return (NULL); | |
1048 | } | |
1049 | ||
1050 | /* | |
1051 | * Yup, update the amount used... | |
1052 | */ | |
1053 | ||
1054 | http->used += bytes; | |
1055 | } | |
1056 | ||
1057 | /* | |
1058 | * Now copy as much of the current line as possible... | |
1059 | */ | |
1060 | ||
1061 | for (bufptr = http->buffer, bufend = http->buffer + http->used; | |
1062 | lineptr < lineend && bufptr < bufend;) | |
1063 | { | |
1064 | if (*bufptr == 0x0a) | |
1065 | { | |
1066 | eol = 1; | |
1067 | bufptr ++; | |
1068 | break; | |
1069 | } | |
1070 | else if (*bufptr == 0x0d) | |
1071 | bufptr ++; | |
1072 | else | |
1073 | *lineptr++ = *bufptr++; | |
1074 | } | |
1075 | ||
b86bc4cf | 1076 | http->used -= (int)(bufptr - http->buffer); |
ef416fc2 | 1077 | if (http->used > 0) |
1078 | memmove(http->buffer, bufptr, http->used); | |
1079 | ||
1080 | if (eol) | |
1081 | { | |
1082 | /* | |
1083 | * End of line... | |
1084 | */ | |
1085 | ||
1086 | http->activity = time(NULL); | |
1087 | ||
1088 | *lineptr = '\0'; | |
1089 | ||
1090 | DEBUG_printf(("httpGets: Returning \"%s\"\n", line)); | |
1091 | ||
1092 | return (line); | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | DEBUG_puts("httpGets: No new line available!"); | |
1097 | ||
1098 | return (NULL); | |
1099 | } | |
1100 | ||
1101 | ||
1102 | /* | |
1103 | * 'httpHead()' - Send a HEAD request to the server. | |
1104 | */ | |
1105 | ||
1106 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 1107 | httpHead(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1108 | const char *uri) /* I - URI for head */ |
1109 | { | |
1110 | return (http_send(http, HTTP_HEAD, uri)); | |
1111 | } | |
1112 | ||
1113 | ||
1114 | /* | |
1115 | * 'httpInitialize()' - Initialize the HTTP interface library and set the | |
1116 | * default HTTP proxy (if any). | |
1117 | */ | |
1118 | ||
1119 | void | |
1120 | httpInitialize(void) | |
1121 | { | |
1122 | #ifdef HAVE_LIBSSL | |
1123 | # ifndef WIN32 | |
1124 | struct timeval curtime; /* Current time in microseconds */ | |
1125 | # endif /* !WIN32 */ | |
1126 | int i; /* Looping var */ | |
1127 | unsigned char data[1024]; /* Seed data */ | |
1128 | #endif /* HAVE_LIBSSL */ | |
1129 | ||
1130 | #ifdef WIN32 | |
1131 | WSADATA winsockdata; /* WinSock data */ | |
1132 | static int initialized = 0; /* Has WinSock been initialized? */ | |
1133 | ||
1134 | ||
1135 | if (!initialized) | |
1136 | WSAStartup(MAKEWORD(1,1), &winsockdata); | |
fa73b229 | 1137 | #elif !defined(SO_NOSIGPIPE) |
ef416fc2 | 1138 | /* |
1139 | * Ignore SIGPIPE signals... | |
1140 | */ | |
1141 | ||
fa73b229 | 1142 | # ifdef HAVE_SIGSET |
1143 | sigset(SIGPIPE, SIG_IGN); | |
1144 | # elif defined(HAVE_SIGACTION) | |
1145 | struct sigaction action; /* POSIX sigaction data */ | |
1146 | ||
1147 | ||
ef416fc2 | 1148 | memset(&action, 0, sizeof(action)); |
1149 | action.sa_handler = SIG_IGN; | |
1150 | sigaction(SIGPIPE, &action, NULL); | |
fa73b229 | 1151 | # else |
ef416fc2 | 1152 | signal(SIGPIPE, SIG_IGN); |
fa73b229 | 1153 | # endif /* !SO_NOSIGPIPE */ |
ef416fc2 | 1154 | #endif /* WIN32 */ |
1155 | ||
1156 | #ifdef HAVE_GNUTLS | |
1157 | gnutls_global_init(); | |
1158 | #endif /* HAVE_GNUTLS */ | |
1159 | ||
1160 | #ifdef HAVE_LIBSSL | |
1161 | SSL_load_error_strings(); | |
1162 | SSL_library_init(); | |
1163 | ||
1164 | /* | |
1165 | * Using the current time is a dubious random seed, but on some systems | |
1166 | * it is the best we can do (on others, this seed isn't even used...) | |
1167 | */ | |
1168 | ||
1169 | #ifdef WIN32 | |
1170 | #else | |
1171 | gettimeofday(&curtime, NULL); | |
1172 | srand(curtime.tv_sec + curtime.tv_usec); | |
1173 | #endif /* WIN32 */ | |
1174 | ||
1175 | for (i = 0; i < sizeof(data); i ++) | |
1176 | data[i] = rand(); /* Yes, this is a poor source of random data... */ | |
1177 | ||
1178 | RAND_seed(&data, sizeof(data)); | |
1179 | #endif /* HAVE_LIBSSL */ | |
1180 | } | |
1181 | ||
1182 | ||
1183 | /* | |
1184 | * 'httpOptions()' - Send an OPTIONS request to the server. | |
1185 | */ | |
1186 | ||
1187 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 1188 | httpOptions(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1189 | const char *uri) /* I - URI for options */ |
1190 | { | |
1191 | return (http_send(http, HTTP_OPTIONS, uri)); | |
1192 | } | |
1193 | ||
1194 | ||
1195 | /* | |
1196 | * 'httpPost()' - Send a POST request to the server. | |
1197 | */ | |
1198 | ||
1199 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 1200 | httpPost(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1201 | const char *uri) /* I - URI for post */ |
1202 | { | |
1203 | return (http_send(http, HTTP_POST, uri)); | |
1204 | } | |
1205 | ||
1206 | ||
1207 | /* | |
1208 | * 'httpPrintf()' - Print a formatted string to a HTTP connection. | |
ecdc0628 | 1209 | * |
1210 | * @private@ | |
ef416fc2 | 1211 | */ |
1212 | ||
1213 | int /* O - Number of bytes written */ | |
ecdc0628 | 1214 | httpPrintf(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1215 | const char *format, /* I - printf-style format string */ |
1216 | ...) /* I - Additional args as needed */ | |
1217 | { | |
1218 | int bytes; /* Number of bytes to write */ | |
1219 | char buf[16384]; /* Buffer for formatted string */ | |
1220 | va_list ap; /* Variable argument pointer */ | |
1221 | ||
1222 | ||
1223 | DEBUG_printf(("httpPrintf(http=%p, format=\"%s\", ...)\n", http, format)); | |
1224 | ||
1225 | va_start(ap, format); | |
1226 | bytes = vsnprintf(buf, sizeof(buf), format, ap); | |
1227 | va_end(ap); | |
1228 | ||
1229 | DEBUG_printf(("httpPrintf: %s", buf)); | |
1230 | ||
d09495fa | 1231 | if (http->data_encoding == HTTP_ENCODE_FIELDS) |
1232 | return (httpWrite2(http, buf, bytes)); | |
1233 | else | |
ef416fc2 | 1234 | { |
d09495fa | 1235 | if (http->wused) |
1236 | { | |
1237 | DEBUG_puts(" flushing existing data..."); | |
ef416fc2 | 1238 | |
d09495fa | 1239 | if (httpFlushWrite(http) < 0) |
1240 | return (-1); | |
1241 | } | |
ef416fc2 | 1242 | |
d09495fa | 1243 | return (http_write(http, buf, bytes)); |
1244 | } | |
ef416fc2 | 1245 | } |
1246 | ||
1247 | ||
1248 | /* | |
1249 | * 'httpPut()' - Send a PUT request to the server. | |
1250 | */ | |
1251 | ||
1252 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 1253 | httpPut(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1254 | const char *uri) /* I - URI to put */ |
1255 | { | |
1256 | return (http_send(http, HTTP_PUT, uri)); | |
1257 | } | |
1258 | ||
1259 | ||
1260 | /* | |
1261 | * 'httpRead()' - Read data from a HTTP connection. | |
a4d04587 | 1262 | * |
1263 | * This function is deprecated. Use the httpRead2() function which can | |
1264 | * read more than 2GB of data. | |
1265 | * | |
1266 | * @deprecated@ | |
ef416fc2 | 1267 | */ |
1268 | ||
1269 | int /* O - Number of bytes read */ | |
ecdc0628 | 1270 | httpRead(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1271 | char *buffer, /* I - Buffer for data */ |
1272 | int length) /* I - Maximum number of bytes */ | |
1273 | { | |
a4d04587 | 1274 | return ((int)httpRead2(http, buffer, length)); |
1275 | } | |
1276 | ||
1277 | ||
1278 | /* | |
1279 | * 'httpRead2()' - Read data from a HTTP connection. | |
ecdc0628 | 1280 | * |
1281 | * @since CUPS 1.2@ | |
a4d04587 | 1282 | */ |
1283 | ||
1284 | ssize_t /* O - Number of bytes read */ | |
ecdc0628 | 1285 | httpRead2(http_t *http, /* I - HTTP connection */ |
a4d04587 | 1286 | char *buffer, /* I - Buffer for data */ |
1287 | size_t length) /* I - Maximum number of bytes */ | |
1288 | { | |
1289 | ssize_t bytes; /* Bytes read */ | |
ef416fc2 | 1290 | char len[32]; /* Length string */ |
1291 | ||
1292 | ||
1293 | DEBUG_printf(("httpRead(http=%p, buffer=%p, length=%d)\n", | |
1294 | http, buffer, length)); | |
1295 | ||
1296 | if (http == NULL || buffer == NULL) | |
1297 | return (-1); | |
1298 | ||
1299 | http->activity = time(NULL); | |
1300 | ||
1301 | if (length <= 0) | |
1302 | return (0); | |
1303 | ||
1304 | if (http->data_encoding == HTTP_ENCODE_CHUNKED && | |
1305 | http->data_remaining <= 0) | |
1306 | { | |
a4d04587 | 1307 | DEBUG_puts("httpRead2: Getting chunk length..."); |
ef416fc2 | 1308 | |
1309 | if (httpGets(len, sizeof(len), http) == NULL) | |
1310 | { | |
a4d04587 | 1311 | DEBUG_puts("httpRead2: Could not get length!"); |
ef416fc2 | 1312 | return (0); |
1313 | } | |
1314 | ||
1315 | http->data_remaining = strtoll(len, NULL, 16); | |
1316 | if (http->data_remaining < 0) | |
1317 | { | |
a4d04587 | 1318 | DEBUG_puts("httpRead2: Negative chunk length!"); |
ef416fc2 | 1319 | return (0); |
1320 | } | |
1321 | } | |
1322 | ||
a4d04587 | 1323 | DEBUG_printf(("httpRead2: data_remaining=" CUPS_LLFMT "\n", |
ef416fc2 | 1324 | CUPS_LLCAST http->data_remaining)); |
1325 | ||
1326 | if (http->data_remaining <= 0) | |
1327 | { | |
1328 | /* | |
1329 | * A zero-length chunk ends a transfer; unless we are reading POST | |
1330 | * data, go idle... | |
1331 | */ | |
1332 | ||
1333 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
1334 | httpGets(len, sizeof(len), http); | |
1335 | ||
1336 | if (http->state == HTTP_POST_RECV) | |
1337 | http->state ++; | |
1338 | else | |
1339 | http->state = HTTP_WAITING; | |
1340 | ||
1341 | /* | |
1342 | * Prevent future reads for this request... | |
1343 | */ | |
1344 | ||
1345 | http->data_encoding = HTTP_ENCODE_LENGTH; | |
1346 | ||
1347 | return (0); | |
1348 | } | |
b86bc4cf | 1349 | else if (length > (size_t)http->data_remaining) |
1350 | length = (size_t)http->data_remaining; | |
ef416fc2 | 1351 | |
1352 | if (http->used == 0 && length <= 256) | |
1353 | { | |
1354 | /* | |
1355 | * Buffer small reads for better performance... | |
1356 | */ | |
1357 | ||
ed486911 | 1358 | if (!http->blocking && !httpWait(http, 10000)) |
ef416fc2 | 1359 | return (0); |
1360 | ||
1361 | if (http->data_remaining > sizeof(http->buffer)) | |
1362 | bytes = sizeof(http->buffer); | |
1363 | else | |
1364 | bytes = http->data_remaining; | |
1365 | ||
1366 | #ifdef HAVE_SSL | |
1367 | if (http->tls) | |
1368 | bytes = http_read_ssl(http, http->buffer, bytes); | |
1369 | else | |
1370 | #endif /* HAVE_SSL */ | |
1371 | { | |
a4d04587 | 1372 | DEBUG_printf(("httpRead2: reading %d bytes from socket into buffer...\n", |
ef416fc2 | 1373 | bytes)); |
1374 | ||
1375 | bytes = recv(http->fd, http->buffer, bytes, 0); | |
1376 | ||
a4d04587 | 1377 | DEBUG_printf(("httpRead2: read %d bytes from socket into buffer...\n", |
ef416fc2 | 1378 | bytes)); |
1379 | } | |
1380 | ||
1381 | if (bytes > 0) | |
1382 | http->used = bytes; | |
1383 | else if (bytes < 0) | |
1384 | { | |
1385 | #ifdef WIN32 | |
1386 | http->error = WSAGetLastError(); | |
1387 | return (-1); | |
1388 | #else | |
1389 | if (errno != EINTR) | |
1390 | { | |
1391 | http->error = errno; | |
1392 | return (-1); | |
1393 | } | |
1394 | #endif /* WIN32 */ | |
1395 | } | |
1396 | else | |
1397 | { | |
1398 | http->error = EPIPE; | |
1399 | return (0); | |
1400 | } | |
1401 | } | |
1402 | ||
1403 | if (http->used > 0) | |
1404 | { | |
b86bc4cf | 1405 | if (length > (size_t)http->used) |
1406 | length = (size_t)http->used; | |
ef416fc2 | 1407 | |
b86bc4cf | 1408 | bytes = (ssize_t)length; |
ef416fc2 | 1409 | |
a4d04587 | 1410 | DEBUG_printf(("httpRead2: grabbing %d bytes from input buffer...\n", bytes)); |
ef416fc2 | 1411 | |
1412 | memcpy(buffer, http->buffer, length); | |
b86bc4cf | 1413 | http->used -= (int)length; |
ef416fc2 | 1414 | |
1415 | if (http->used > 0) | |
1416 | memmove(http->buffer, http->buffer + length, http->used); | |
1417 | } | |
1418 | #ifdef HAVE_SSL | |
1419 | else if (http->tls) | |
1420 | { | |
ed486911 | 1421 | if (!http->blocking && !httpWait(http, 10000)) |
ef416fc2 | 1422 | return (0); |
1423 | ||
b86bc4cf | 1424 | bytes = (ssize_t)http_read_ssl(http, buffer, (int)length); |
ef416fc2 | 1425 | } |
1426 | #endif /* HAVE_SSL */ | |
1427 | else | |
1428 | { | |
ed486911 | 1429 | if (!http->blocking && !httpWait(http, 10000)) |
ef416fc2 | 1430 | return (0); |
1431 | ||
a4d04587 | 1432 | DEBUG_printf(("httpRead2: reading %d bytes from socket...\n", length)); |
ef416fc2 | 1433 | |
b86bc4cf | 1434 | #ifdef WIN32 |
1435 | bytes = (ssize_t)recv(http->fd, buffer, (int)length, 0); | |
1436 | #else | |
ef416fc2 | 1437 | while ((bytes = recv(http->fd, buffer, length, 0)) < 0) |
1438 | if (errno != EINTR) | |
1439 | break; | |
b86bc4cf | 1440 | #endif /* WIN32 */ |
ef416fc2 | 1441 | |
a4d04587 | 1442 | DEBUG_printf(("httpRead2: read %d bytes from socket...\n", bytes)); |
ef416fc2 | 1443 | } |
1444 | ||
1445 | if (bytes > 0) | |
1446 | { | |
1447 | http->data_remaining -= bytes; | |
1448 | ||
1449 | if (http->data_remaining <= INT_MAX) | |
1450 | http->_data_remaining = (int)http->data_remaining; | |
1451 | else | |
1452 | http->_data_remaining = INT_MAX; | |
1453 | } | |
1454 | else if (bytes < 0) | |
1455 | { | |
1456 | #ifdef WIN32 | |
1457 | http->error = WSAGetLastError(); | |
1458 | #else | |
1459 | if (errno == EINTR) | |
1460 | bytes = 0; | |
1461 | else | |
1462 | http->error = errno; | |
1463 | #endif /* WIN32 */ | |
1464 | } | |
1465 | else | |
1466 | { | |
1467 | http->error = EPIPE; | |
1468 | return (0); | |
1469 | } | |
1470 | ||
1471 | if (http->data_remaining == 0) | |
1472 | { | |
1473 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
1474 | httpGets(len, sizeof(len), http); | |
1475 | ||
1476 | if (http->data_encoding != HTTP_ENCODE_CHUNKED) | |
1477 | { | |
1478 | if (http->state == HTTP_POST_RECV) | |
1479 | http->state ++; | |
1480 | else | |
1481 | http->state = HTTP_WAITING; | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | #ifdef DEBUG | |
1486 | { | |
1487 | int i, j, ch; | |
a4d04587 | 1488 | printf("httpRead2: Read %d bytes:\n", bytes); |
ef416fc2 | 1489 | for (i = 0; i < bytes; i += 16) |
1490 | { | |
1491 | printf(" "); | |
1492 | ||
1493 | for (j = 0; j < 16 && (i + j) < bytes; j ++) | |
1494 | printf(" %02X", buffer[i + j] & 255); | |
1495 | ||
1496 | while (j < 16) | |
1497 | { | |
1498 | printf(" "); | |
1499 | j ++; | |
1500 | } | |
1501 | ||
1502 | printf(" "); | |
1503 | for (j = 0; j < 16 && (i + j) < bytes; j ++) | |
1504 | { | |
1505 | ch = buffer[i + j] & 255; | |
1506 | ||
fa73b229 | 1507 | if (ch < ' ' || ch >= 127) |
ef416fc2 | 1508 | ch = '.'; |
1509 | ||
1510 | putchar(ch); | |
1511 | } | |
1512 | putchar('\n'); | |
1513 | } | |
1514 | } | |
1515 | #endif /* DEBUG */ | |
1516 | ||
1517 | return (bytes); | |
1518 | } | |
1519 | ||
1520 | ||
1521 | #if defined(HAVE_SSL) && defined(HAVE_CDSASSL) | |
1522 | /* | |
411affcf | 1523 | * '_httpReadCDSA()' - Read function for the CDSA library. |
ef416fc2 | 1524 | */ |
1525 | ||
1526 | OSStatus /* O - -1 on error, 0 on success */ | |
1527 | _httpReadCDSA( | |
1528 | SSLConnectionRef connection, /* I - SSL/TLS connection */ | |
1529 | void *data, /* I - Data buffer */ | |
1530 | size_t *dataLength) /* IO - Number of bytes */ | |
1531 | { | |
411affcf | 1532 | OSStatus result; /* Return value */ |
1533 | ssize_t bytes; /* Number of bytes read */ | |
1534 | http_t *http; /* HTTP connection */ | |
1535 | ||
1536 | ||
1537 | http = (http_t *)connection; | |
e53920b9 | 1538 | |
411affcf | 1539 | if (!http->blocking) |
1540 | { | |
1541 | /* | |
1542 | * Make sure we have data before we read... | |
1543 | */ | |
e53920b9 | 1544 | |
411affcf | 1545 | if (!http_wait(http, 10000, 0)) |
1546 | { | |
1547 | http->error = ETIMEDOUT; | |
1548 | return (-1); | |
1549 | } | |
1550 | } | |
ef416fc2 | 1551 | |
b423cd4c | 1552 | do |
411affcf | 1553 | { |
1554 | bytes = recv(http->fd, data, *dataLength, 0); | |
1555 | } | |
b423cd4c | 1556 | while (bytes == -1 && errno == EINTR); |
fa73b229 | 1557 | |
b423cd4c | 1558 | if (bytes == *dataLength) |
411affcf | 1559 | { |
b423cd4c | 1560 | result = 0; |
411affcf | 1561 | } |
b423cd4c | 1562 | else if (bytes > 0) |
1563 | { | |
1564 | *dataLength = bytes; | |
1565 | result = errSSLWouldBlock; | |
1566 | } | |
1567 | else | |
1568 | { | |
1569 | *dataLength = 0; | |
fa73b229 | 1570 | |
1571 | if (bytes == 0) | |
ed486911 | 1572 | result = errSSLClosedGraceful; |
b423cd4c | 1573 | else if (errno == EAGAIN) |
1574 | result = errSSLWouldBlock; | |
b423cd4c | 1575 | else |
ed486911 | 1576 | result = errSSLClosedAbort; |
ef416fc2 | 1577 | } |
b423cd4c | 1578 | |
411affcf | 1579 | return (result); |
ef416fc2 | 1580 | } |
1581 | #endif /* HAVE_SSL && HAVE_CDSASSL */ | |
1582 | ||
1583 | ||
411affcf | 1584 | #if defined(HAVE_SSL) && defined(HAVE_GNUTLS) |
1585 | /* | |
1586 | * '_httpReadGNUTLS()' - Read function for the GNU TLS library. | |
1587 | */ | |
1588 | ||
1589 | ssize_t /* O - Number of bytes read or -1 on error */ | |
1590 | _httpReadGNUTLS( | |
1591 | gnutls_transport_ptr ptr, /* I - HTTP connection */ | |
1592 | void *data, /* I - Buffer */ | |
1593 | size_t length) /* I - Number of bytes to read */ | |
1594 | { | |
1595 | http_t *http; /* HTTP connection */ | |
1596 | ||
1597 | ||
1598 | http = (http_t *)ptr; | |
1599 | ||
1600 | if (!http->blocking) | |
1601 | { | |
1602 | /* | |
1603 | * Make sure we have data before we read... | |
1604 | */ | |
1605 | ||
1606 | if (!http_wait(http, 10000, 0)) | |
1607 | { | |
1608 | http->error = ETIMEDOUT; | |
1609 | return (-1); | |
1610 | } | |
1611 | } | |
1612 | ||
1613 | return (recv(http->fd, data, length, 0)); | |
1614 | } | |
1615 | #endif /* HAVE_SSL && HAVE_GNUTLS */ | |
1616 | ||
1617 | ||
ef416fc2 | 1618 | /* |
ecdc0628 | 1619 | * 'httpReconnect()' - Reconnect to a HTTP server. |
ef416fc2 | 1620 | */ |
1621 | ||
1622 | int /* O - 0 on success, non-zero on failure */ | |
ecdc0628 | 1623 | httpReconnect(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 1624 | { |
1625 | http_addrlist_t *addr; /* Connected address */ | |
1626 | ||
1627 | ||
1628 | DEBUG_printf(("httpReconnect(http=%p)\n", http)); | |
1629 | ||
1630 | if (!http) | |
1631 | return (-1); | |
1632 | ||
1633 | #ifdef HAVE_SSL | |
1634 | if (http->tls) | |
1635 | http_shutdown_ssl(http); | |
1636 | #endif /* HAVE_SSL */ | |
1637 | ||
1638 | /* | |
1639 | * Close any previously open socket... | |
1640 | */ | |
1641 | ||
1642 | if (http->fd >= 0) | |
bd7854cb | 1643 | { |
ef416fc2 | 1644 | #ifdef WIN32 |
1645 | closesocket(http->fd); | |
1646 | #else | |
1647 | close(http->fd); | |
1648 | #endif /* WIN32 */ | |
1649 | ||
bd7854cb | 1650 | http->fd = -1; |
1651 | } | |
1652 | ||
ef416fc2 | 1653 | /* |
1654 | * Connect to the server... | |
1655 | */ | |
1656 | ||
1657 | if ((addr = httpAddrConnect(http->addrlist, &(http->fd))) == NULL) | |
1658 | { | |
1659 | /* | |
1660 | * Unable to connect... | |
1661 | */ | |
1662 | ||
1663 | #ifdef WIN32 | |
1664 | http->error = WSAGetLastError(); | |
1665 | #else | |
1666 | http->error = errno; | |
1667 | #endif /* WIN32 */ | |
1668 | http->status = HTTP_ERROR; | |
1669 | ||
1670 | return (-1); | |
1671 | } | |
1672 | ||
1673 | http->hostaddr = &(addr->addr); | |
1674 | http->error = 0; | |
1675 | http->status = HTTP_CONTINUE; | |
1676 | ||
1677 | #ifdef HAVE_SSL | |
1678 | if (http->encryption == HTTP_ENCRYPT_ALWAYS) | |
1679 | { | |
1680 | /* | |
1681 | * Always do encryption via SSL. | |
1682 | */ | |
1683 | ||
1684 | if (http_setup_ssl(http) != 0) | |
1685 | { | |
f7deaa1a | 1686 | # ifdef WIN32 |
ef416fc2 | 1687 | closesocket(http->fd); |
f7deaa1a | 1688 | # else |
ef416fc2 | 1689 | close(http->fd); |
f7deaa1a | 1690 | # endif /* WIN32 */ |
ef416fc2 | 1691 | |
1692 | return (-1); | |
1693 | } | |
1694 | } | |
1695 | else if (http->encryption == HTTP_ENCRYPT_REQUIRED) | |
1696 | return (http_upgrade(http)); | |
1697 | #endif /* HAVE_SSL */ | |
1698 | ||
1699 | return (0); | |
1700 | } | |
1701 | ||
1702 | ||
355e94dc MS |
1703 | /* |
1704 | * 'httpSetAuthString()' - Set the current authorization string. | |
1705 | * | |
1706 | * This function just stores a copy of the current authorization string in | |
1707 | * the HTTP connection object. You must still call httpSetField() to set | |
1708 | * HTTP_FIELD_AUTHORIZATION prior to issuing a HTTP request using httpGet(), | |
1709 | * httpHead(), httpOptions(), httpPost, or httpPut(). | |
1710 | * | |
1711 | * @since CUPS 1.3@ | |
1712 | */ | |
1713 | ||
1714 | void | |
1715 | httpSetAuthString(http_t *http, /* I - HTTP connection */ | |
1716 | const char *scheme, /* I - Auth scheme (NULL to clear it) */ | |
1717 | const char *data) /* I - Auth data (NULL for none) */ | |
1718 | { | |
1719 | /* | |
1720 | * Range check input... | |
1721 | */ | |
1722 | ||
1723 | if (!http) | |
1724 | return; | |
1725 | ||
1726 | if (http->authstring && http->authstring != http->_authstring) | |
1727 | free(http->authstring); | |
1728 | ||
1729 | http->authstring = http->_authstring; | |
1730 | ||
1731 | if (scheme) | |
1732 | { | |
1733 | /* | |
1734 | * Set the current authorization string... | |
1735 | */ | |
1736 | ||
1737 | int len = (int)strlen(scheme) + (data ? (int)strlen(data) + 1 : 0) + 1; | |
1738 | ||
1739 | if (len > (int)sizeof(http->_authstring)) | |
1740 | http->authstring = malloc(len); | |
1741 | ||
1742 | if (data) | |
1743 | snprintf(http->authstring, len, "%s %s", scheme, data); | |
1744 | else | |
1745 | strlcpy(http->authstring, scheme, len); | |
1746 | } | |
1747 | else | |
1748 | { | |
1749 | /* | |
1750 | * Clear the current authorization string... | |
1751 | */ | |
1752 | ||
1753 | http->_authstring[0] = '\0'; | |
1754 | } | |
1755 | } | |
1756 | ||
1757 | ||
ef416fc2 | 1758 | /* |
1759 | * 'httpSetCookie()' - Set the cookie value(s)... | |
1760 | * | |
1761 | * @since CUPS 1.1.19@ | |
1762 | */ | |
1763 | ||
1764 | void | |
1765 | httpSetCookie(http_t *http, /* I - Connection */ | |
1766 | const char *cookie) /* I - Cookie string */ | |
1767 | { | |
1768 | if (!http) | |
1769 | return; | |
1770 | ||
1771 | if (http->cookie) | |
1772 | free(http->cookie); | |
1773 | ||
1774 | if (cookie) | |
1775 | http->cookie = strdup(cookie); | |
1776 | else | |
1777 | http->cookie = NULL; | |
1778 | } | |
1779 | ||
1780 | ||
b423cd4c | 1781 | /* |
1782 | * 'httpSetExpect()' - Set the Expect: header in a request. | |
1783 | * | |
1784 | * Currently only HTTP_CONTINUE is supported for the "expect" argument. | |
1785 | * | |
1786 | * @since CUPS 1.2@ | |
1787 | */ | |
1788 | ||
1789 | void | |
1790 | httpSetExpect(http_t *http, /* I - HTTP connection */ | |
1791 | http_status_t expect) /* I - HTTP status to expect (HTTP_CONTINUE) */ | |
1792 | { | |
1793 | if (http) | |
1794 | http->expect = expect; | |
1795 | } | |
1796 | ||
1797 | ||
ef416fc2 | 1798 | /* |
1799 | * 'httpSetField()' - Set the value of an HTTP header. | |
1800 | */ | |
1801 | ||
1802 | void | |
ecdc0628 | 1803 | httpSetField(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1804 | http_field_t field, /* I - Field index */ |
1805 | const char *value) /* I - Value */ | |
1806 | { | |
1807 | if (http == NULL || | |
1808 | field < HTTP_FIELD_ACCEPT_LANGUAGE || | |
1809 | field > HTTP_FIELD_WWW_AUTHENTICATE || | |
1810 | value == NULL) | |
1811 | return; | |
1812 | ||
1813 | strlcpy(http->fields[field], value, HTTP_MAX_VALUE); | |
f7deaa1a | 1814 | |
1815 | /* | |
1816 | * Special case for Authorization: as its contents can be | |
1817 | * longer than HTTP_MAX_VALUE | |
1818 | */ | |
1819 | ||
1820 | if (field == HTTP_FIELD_AUTHORIZATION) | |
1821 | { | |
1822 | if (http->field_authorization) | |
1823 | free(http->field_authorization); | |
1824 | ||
1825 | http->field_authorization = strdup(value); | |
1826 | } | |
ef416fc2 | 1827 | } |
1828 | ||
1829 | ||
1830 | /* | |
1831 | * 'httpSetLength()' - Set the content-length and content-encoding. | |
1832 | * | |
1833 | * @since CUPS 1.2@ | |
1834 | */ | |
1835 | ||
1836 | void | |
ecdc0628 | 1837 | httpSetLength(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1838 | size_t length) /* I - Length (0 for chunked) */ |
1839 | { | |
1840 | if (!http) | |
1841 | return; | |
1842 | ||
1843 | if (!length) | |
1844 | { | |
1845 | strcpy(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked"); | |
1846 | http->fields[HTTP_FIELD_CONTENT_LENGTH][0] = '\0'; | |
1847 | } | |
1848 | else | |
1849 | { | |
1850 | http->fields[HTTP_FIELD_TRANSFER_ENCODING][0] = '\0'; | |
1851 | snprintf(http->fields[HTTP_FIELD_CONTENT_LENGTH], HTTP_MAX_VALUE, | |
1852 | CUPS_LLFMT, CUPS_LLCAST length); | |
1853 | } | |
1854 | } | |
1855 | ||
1856 | ||
1857 | /* | |
1858 | * 'httpTrace()' - Send an TRACE request to the server. | |
1859 | */ | |
1860 | ||
1861 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 1862 | httpTrace(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1863 | const char *uri) /* I - URI for trace */ |
1864 | { | |
1865 | return (http_send(http, HTTP_TRACE, uri)); | |
1866 | } | |
1867 | ||
1868 | ||
1869 | /* | |
1870 | * 'httpUpdate()' - Update the current HTTP state for incoming data. | |
1871 | */ | |
1872 | ||
1873 | http_status_t /* O - HTTP status */ | |
ecdc0628 | 1874 | httpUpdate(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 1875 | { |
1876 | char line[32768], /* Line from connection... */ | |
1877 | *value; /* Pointer to value on line */ | |
1878 | http_field_t field; /* Field index */ | |
1879 | int major, minor, /* HTTP version numbers */ | |
1880 | status; /* Request status */ | |
1881 | ||
1882 | ||
1883 | DEBUG_printf(("httpUpdate(http=%p), state=%d\n", http, http->state)); | |
1884 | ||
1885 | /* | |
1886 | * Flush pending data, if any... | |
1887 | */ | |
1888 | ||
1889 | if (http->wused) | |
1890 | { | |
1891 | DEBUG_puts(" flushing buffer..."); | |
1892 | ||
1893 | if (httpFlushWrite(http) < 0) | |
1894 | return (HTTP_ERROR); | |
1895 | } | |
1896 | ||
1897 | /* | |
1898 | * If we haven't issued any commands, then there is nothing to "update"... | |
1899 | */ | |
1900 | ||
1901 | if (http->state == HTTP_WAITING) | |
1902 | return (HTTP_CONTINUE); | |
1903 | ||
1904 | /* | |
1905 | * Grab all of the lines we can from the connection... | |
1906 | */ | |
1907 | ||
1908 | while (httpGets(line, sizeof(line), http) != NULL) | |
1909 | { | |
1910 | DEBUG_printf(("httpUpdate: Got \"%s\"\n", line)); | |
1911 | ||
1912 | if (line[0] == '\0') | |
1913 | { | |
1914 | /* | |
1915 | * Blank line means the start of the data section (if any). Return | |
1916 | * the result code, too... | |
1917 | * | |
1918 | * If we get status 100 (HTTP_CONTINUE), then we *don't* change states. | |
1919 | * Instead, we just return HTTP_CONTINUE to the caller and keep on | |
1920 | * tryin'... | |
1921 | */ | |
1922 | ||
1923 | if (http->status == HTTP_CONTINUE) | |
1924 | return (http->status); | |
1925 | ||
1926 | if (http->status < HTTP_BAD_REQUEST) | |
1927 | http->digest_tries = 0; | |
1928 | ||
1929 | #ifdef HAVE_SSL | |
1930 | if (http->status == HTTP_SWITCHING_PROTOCOLS && !http->tls) | |
1931 | { | |
1932 | if (http_setup_ssl(http) != 0) | |
1933 | { | |
1934 | # ifdef WIN32 | |
1935 | closesocket(http->fd); | |
1936 | # else | |
1937 | close(http->fd); | |
1938 | # endif /* WIN32 */ | |
1939 | ||
1940 | return (HTTP_ERROR); | |
1941 | } | |
1942 | ||
1943 | return (HTTP_CONTINUE); | |
1944 | } | |
1945 | #endif /* HAVE_SSL */ | |
1946 | ||
1947 | httpGetLength2(http); | |
1948 | ||
1949 | switch (http->state) | |
1950 | { | |
1951 | case HTTP_GET : | |
1952 | case HTTP_POST : | |
1953 | case HTTP_POST_RECV : | |
1954 | case HTTP_PUT : | |
1955 | http->state ++; | |
1956 | case HTTP_POST_SEND : | |
e1d6a774 | 1957 | case HTTP_HEAD : |
ef416fc2 | 1958 | break; |
1959 | ||
1960 | default : | |
1961 | http->state = HTTP_WAITING; | |
1962 | break; | |
1963 | } | |
1964 | ||
1965 | return (http->status); | |
1966 | } | |
1967 | else if (strncmp(line, "HTTP/", 5) == 0) | |
1968 | { | |
1969 | /* | |
1970 | * Got the beginning of a response... | |
1971 | */ | |
1972 | ||
1973 | if (sscanf(line, "HTTP/%d.%d%d", &major, &minor, &status) != 3) | |
1974 | return (HTTP_ERROR); | |
1975 | ||
1976 | http->version = (http_version_t)(major * 100 + minor); | |
1977 | http->status = (http_status_t)status; | |
1978 | } | |
1979 | else if ((value = strchr(line, ':')) != NULL) | |
1980 | { | |
1981 | /* | |
1982 | * Got a value... | |
1983 | */ | |
1984 | ||
1985 | *value++ = '\0'; | |
1986 | while (isspace(*value & 255)) | |
1987 | value ++; | |
1988 | ||
1989 | /* | |
1990 | * Be tolerants of servers that send unknown attribute fields... | |
1991 | */ | |
1992 | ||
1993 | if (!strcasecmp(line, "expect")) | |
1994 | { | |
1995 | /* | |
1996 | * "Expect: 100-continue" or similar... | |
1997 | */ | |
1998 | ||
1999 | http->expect = (http_status_t)atoi(value); | |
2000 | } | |
2001 | else if (!strcasecmp(line, "cookie")) | |
2002 | { | |
2003 | /* | |
2004 | * "Cookie: name=value[; name=value ...]" - replaces previous cookies... | |
2005 | */ | |
2006 | ||
2007 | httpSetCookie(http, value); | |
2008 | } | |
2009 | else if ((field = http_field(line)) == HTTP_FIELD_UNKNOWN) | |
2010 | { | |
2011 | DEBUG_printf(("httpUpdate: unknown field %s seen!\n", line)); | |
2012 | continue; | |
2013 | } | |
2014 | else | |
2015 | httpSetField(http, field, value); | |
2016 | } | |
2017 | else | |
2018 | { | |
2019 | http->status = HTTP_ERROR; | |
2020 | return (HTTP_ERROR); | |
2021 | } | |
2022 | } | |
2023 | ||
2024 | /* | |
2025 | * See if there was an error... | |
2026 | */ | |
2027 | ||
2028 | if (http->error == EPIPE && http->status > HTTP_CONTINUE) | |
2029 | return (http->status); | |
2030 | ||
2031 | if (http->error) | |
2032 | { | |
2033 | DEBUG_printf(("httpUpdate: socket error %d - %s\n", http->error, | |
2034 | strerror(http->error))); | |
2035 | http->status = HTTP_ERROR; | |
2036 | return (HTTP_ERROR); | |
2037 | } | |
2038 | ||
2039 | /* | |
2040 | * If we haven't already returned, then there is nothing new... | |
2041 | */ | |
2042 | ||
2043 | return (HTTP_CONTINUE); | |
2044 | } | |
2045 | ||
2046 | ||
2047 | /* | |
2048 | * 'httpWait()' - Wait for data available on a connection. | |
2049 | * | |
2050 | * @since CUPS 1.1.19@ | |
2051 | */ | |
2052 | ||
2053 | int /* O - 1 if data is available, 0 otherwise */ | |
ecdc0628 | 2054 | httpWait(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 2055 | int msec) /* I - Milliseconds to wait */ |
2056 | { | |
2057 | /* | |
2058 | * First see if there is data in the buffer... | |
2059 | */ | |
2060 | ||
2061 | if (http == NULL) | |
2062 | return (0); | |
2063 | ||
2064 | if (http->used) | |
2065 | return (1); | |
2066 | ||
8ca02f3c | 2067 | /* |
2068 | * Flush pending data, if any... | |
2069 | */ | |
2070 | ||
2071 | if (http->wused) | |
2072 | { | |
2073 | if (httpFlushWrite(http) < 0) | |
2074 | return (0); | |
2075 | } | |
2076 | ||
ef416fc2 | 2077 | /* |
2078 | * If not, check the SSL/TLS buffers and do a select() on the connection... | |
2079 | */ | |
2080 | ||
411affcf | 2081 | return (http_wait(http, msec, 1)); |
ef416fc2 | 2082 | } |
2083 | ||
2084 | ||
2085 | /* | |
2086 | * 'httpWrite()' - Write data to a HTTP connection. | |
a4d04587 | 2087 | * |
2088 | * This function is deprecated. Use the httpWrite2() function which can | |
2089 | * write more than 2GB of data. | |
2090 | * | |
2091 | * @deprecated@ | |
ef416fc2 | 2092 | */ |
2093 | ||
2094 | int /* O - Number of bytes written */ | |
ecdc0628 | 2095 | httpWrite(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 2096 | const char *buffer, /* I - Buffer for data */ |
2097 | int length) /* I - Number of bytes to write */ | |
2098 | { | |
a4d04587 | 2099 | return ((int)httpWrite2(http, buffer, length)); |
2100 | } | |
2101 | ||
2102 | ||
2103 | /* | |
2104 | * 'httpWrite2()' - Write data to a HTTP connection. | |
ecdc0628 | 2105 | * |
2106 | * @since CUPS 1.2@ | |
a4d04587 | 2107 | */ |
2108 | ||
2109 | ssize_t /* O - Number of bytes written */ | |
ecdc0628 | 2110 | httpWrite2(http_t *http, /* I - HTTP connection */ |
a4d04587 | 2111 | const char *buffer, /* I - Buffer for data */ |
2112 | size_t length) /* I - Number of bytes to write */ | |
2113 | { | |
2114 | ssize_t bytes; /* Bytes written */ | |
ef416fc2 | 2115 | |
2116 | ||
2117 | DEBUG_printf(("httpWrite(http=%p, buffer=%p, length=%d)\n", http, | |
2118 | buffer, length)); | |
2119 | ||
2120 | /* | |
2121 | * Range check input... | |
2122 | */ | |
2123 | ||
2124 | if (http == NULL || buffer == NULL) | |
2125 | return (-1); | |
2126 | ||
2127 | /* | |
2128 | * Mark activity on the connection... | |
2129 | */ | |
2130 | ||
2131 | http->activity = time(NULL); | |
2132 | ||
2133 | /* | |
2134 | * Buffer small writes for better performance... | |
2135 | */ | |
2136 | ||
2137 | if (length > 0) | |
2138 | { | |
2139 | if (http->wused && (length + http->wused) > sizeof(http->wbuffer)) | |
2140 | { | |
2141 | DEBUG_printf((" flushing buffer (wused=%d, length=%d)\n", | |
2142 | http->wused, length)); | |
2143 | ||
2144 | httpFlushWrite(http); | |
2145 | } | |
2146 | ||
07725fee | 2147 | if ((length + http->wused) <= sizeof(http->wbuffer)) |
ef416fc2 | 2148 | { |
2149 | /* | |
2150 | * Write to buffer... | |
2151 | */ | |
2152 | ||
2153 | DEBUG_printf((" copying %d bytes to wbuffer...\n", length)); | |
2154 | ||
2155 | memcpy(http->wbuffer + http->wused, buffer, length); | |
b86bc4cf | 2156 | http->wused += (int)length; |
2157 | bytes = (ssize_t)length; | |
ef416fc2 | 2158 | } |
2159 | else | |
2160 | { | |
2161 | /* | |
2162 | * Otherwise write the data directly... | |
2163 | */ | |
2164 | ||
2165 | DEBUG_printf((" writing %d bytes to socket...\n", length)); | |
2166 | ||
2167 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
b86bc4cf | 2168 | bytes = (ssize_t)http_write_chunk(http, buffer, (int)length); |
ef416fc2 | 2169 | else |
b86bc4cf | 2170 | bytes = (ssize_t)http_write(http, buffer, (int)length); |
ef416fc2 | 2171 | |
2172 | DEBUG_printf((" wrote %d bytes...\n", bytes)); | |
2173 | } | |
2174 | ||
2175 | if (http->data_encoding == HTTP_ENCODE_LENGTH) | |
2176 | http->data_remaining -= bytes; | |
2177 | } | |
2178 | else | |
2179 | bytes = 0; | |
2180 | ||
2181 | /* | |
2182 | * Handle end-of-request processing... | |
2183 | */ | |
2184 | ||
2185 | if ((http->data_encoding == HTTP_ENCODE_CHUNKED && length == 0) || | |
2186 | (http->data_encoding == HTTP_ENCODE_LENGTH && http->data_remaining == 0)) | |
2187 | { | |
2188 | /* | |
2189 | * Finished with the transfer; unless we are sending POST or PUT | |
2190 | * data, go idle... | |
2191 | */ | |
2192 | ||
2193 | DEBUG_puts("httpWrite: changing states..."); | |
2194 | ||
2195 | if (http->wused) | |
2196 | httpFlushWrite(http); | |
2197 | ||
2198 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
2199 | { | |
2200 | /* | |
2201 | * Send a 0-length chunk at the end of the request... | |
2202 | */ | |
2203 | ||
2204 | http_write(http, "0\r\n\r\n", 5); | |
2205 | ||
2206 | /* | |
2207 | * Reset the data state... | |
2208 | */ | |
2209 | ||
2210 | http->data_encoding = HTTP_ENCODE_LENGTH; | |
2211 | http->data_remaining = 0; | |
2212 | } | |
2213 | ||
2214 | if (http->state == HTTP_POST_RECV) | |
2215 | http->state ++; | |
2216 | else if (http->state == HTTP_PUT_RECV) | |
2217 | http->state = HTTP_STATUS; | |
2218 | else | |
2219 | http->state = HTTP_WAITING; | |
2220 | } | |
2221 | ||
2222 | return (bytes); | |
2223 | } | |
2224 | ||
2225 | ||
2226 | #if defined(HAVE_SSL) && defined(HAVE_CDSASSL) | |
2227 | /* | |
411affcf | 2228 | * '_httpWriteCDSA()' - Write function for the CDSA library. |
ef416fc2 | 2229 | */ |
2230 | ||
2231 | OSStatus /* O - -1 on error, 0 on success */ | |
2232 | _httpWriteCDSA( | |
2233 | SSLConnectionRef connection, /* I - SSL/TLS connection */ | |
2234 | const void *data, /* I - Data buffer */ | |
2235 | size_t *dataLength) /* IO - Number of bytes */ | |
2236 | { | |
411affcf | 2237 | OSStatus result; /* Return value */ |
2238 | ssize_t bytes; /* Number of bytes read */ | |
2239 | http_t *http; /* HTTP connection */ | |
e53920b9 | 2240 | |
2241 | ||
411affcf | 2242 | http = (http_t *)connection; |
ef416fc2 | 2243 | |
b423cd4c | 2244 | do |
411affcf | 2245 | { |
2246 | bytes = write(http->fd, data, *dataLength); | |
2247 | } | |
b423cd4c | 2248 | while (bytes == -1 && errno == EINTR); |
fa73b229 | 2249 | |
b423cd4c | 2250 | if (bytes == *dataLength) |
411affcf | 2251 | { |
b423cd4c | 2252 | result = 0; |
411affcf | 2253 | } |
b423cd4c | 2254 | else if (bytes >= 0) |
2255 | { | |
2256 | *dataLength = bytes; | |
2257 | result = errSSLWouldBlock; | |
2258 | } | |
2259 | else | |
2260 | { | |
2261 | *dataLength = 0; | |
2262 | ||
fa73b229 | 2263 | if (errno == EAGAIN) |
b423cd4c | 2264 | result = errSSLWouldBlock; |
b423cd4c | 2265 | else |
ed486911 | 2266 | result = errSSLClosedAbort; |
ef416fc2 | 2267 | } |
b423cd4c | 2268 | |
411affcf | 2269 | return (result); |
ef416fc2 | 2270 | } |
2271 | #endif /* HAVE_SSL && HAVE_CDSASSL */ | |
2272 | ||
2273 | ||
411affcf | 2274 | #if defined(HAVE_SSL) && defined(HAVE_GNUTLS) |
2275 | /* | |
2276 | * '_httpWriteGNUTLS()' - Write function for the GNU TLS library. | |
2277 | */ | |
2278 | ||
2279 | ssize_t /* O - Number of bytes written or -1 on error */ | |
2280 | _httpWriteGNUTLS( | |
2281 | gnutls_transport_ptr ptr, /* I - HTTP connection */ | |
2282 | const void *data, /* I - Data buffer */ | |
2283 | size_t length) /* I - Number of bytes to write */ | |
2284 | { | |
2285 | return (send(((http_t *)ptr)->fd, data, length, 0)); | |
2286 | } | |
2287 | #endif /* HAVE_SSL && HAVE_GNUTLS */ | |
2288 | ||
2289 | ||
2290 | #if defined(HAVE_SSL) && defined(HAVE_LIBSSL) | |
2291 | /* | |
2292 | * 'http_bio_ctrl()' - Control the HTTP connection. | |
2293 | */ | |
2294 | ||
2295 | static long /* O - Result/data */ | |
2296 | http_bio_ctrl(BIO *h, /* I - BIO data */ | |
2297 | int cmd, /* I - Control command */ | |
2298 | long arg1, /* I - First argument */ | |
2299 | void *arg2) /* I - Second argument */ | |
2300 | { | |
2301 | switch (cmd) | |
2302 | { | |
2303 | default : | |
2304 | return (0); | |
2305 | ||
2306 | case BIO_CTRL_RESET : | |
2307 | h->ptr = NULL; | |
2308 | return (0); | |
2309 | ||
2310 | case BIO_C_SET_FILE_PTR : | |
2311 | h->ptr = arg2; | |
2312 | h->init = 1; | |
2313 | return (1); | |
2314 | ||
2315 | case BIO_C_GET_FILE_PTR : | |
2316 | if (arg2) | |
2317 | { | |
2318 | *((void **)arg2) = h->ptr; | |
2319 | return (1); | |
2320 | } | |
2321 | else | |
2322 | return (0); | |
2323 | ||
2324 | case BIO_CTRL_DUP : | |
2325 | case BIO_CTRL_FLUSH : | |
2326 | return (1); | |
2327 | } | |
2328 | } | |
2329 | ||
2330 | ||
2331 | /* | |
2332 | * 'http_bio_free()' - Free OpenSSL data. | |
2333 | */ | |
2334 | ||
2335 | static int /* O - 1 on success, 0 on failure */ | |
2336 | http_bio_free(BIO *h) /* I - BIO data */ | |
2337 | { | |
2338 | if (!h) | |
2339 | return (0); | |
2340 | ||
2341 | if (h->shutdown) | |
2342 | { | |
2343 | h->init = 0; | |
2344 | h->flags = 0; | |
2345 | } | |
2346 | ||
2347 | return (1); | |
2348 | } | |
2349 | ||
2350 | ||
2351 | /* | |
2352 | * 'http_bio_new()' - Initialize an OpenSSL BIO structure. | |
2353 | */ | |
2354 | ||
2355 | static int /* O - 1 on success, 0 on failure */ | |
2356 | http_bio_new(BIO *h) /* I - BIO data */ | |
2357 | { | |
2358 | if (!h) | |
2359 | return (0); | |
2360 | ||
2361 | h->init = 0; | |
2362 | h->num = 0; | |
2363 | h->ptr = NULL; | |
2364 | h->flags = 0; | |
2365 | ||
2366 | return (1); | |
2367 | } | |
2368 | ||
2369 | ||
2370 | /* | |
2371 | * 'http_bio_puts()' - Send a string for OpenSSL. | |
2372 | */ | |
2373 | ||
2374 | static int /* O - Bytes written */ | |
2375 | http_bio_puts(BIO *h, /* I - BIO data */ | |
2376 | const char *str) /* I - String to write */ | |
2377 | { | |
b86bc4cf | 2378 | #ifdef WIN32 |
2379 | return (send(((http_t *)h->ptr)->fd, str, (int)strlen(str), 0)); | |
2380 | #else | |
411affcf | 2381 | return (send(((http_t *)h->ptr)->fd, str, strlen(str), 0)); |
b86bc4cf | 2382 | #endif /* WIN32 */ |
411affcf | 2383 | } |
2384 | ||
2385 | ||
2386 | /* | |
2387 | * 'http_bio_read()' - Read data for OpenSSL. | |
2388 | */ | |
2389 | ||
2390 | static int /* O - Bytes read */ | |
2391 | http_bio_read(BIO *h, /* I - BIO data */ | |
2392 | char *buf, /* I - Buffer */ | |
2393 | int size) /* I - Number of bytes to read */ | |
2394 | { | |
2395 | http_t *http; /* HTTP connection */ | |
2396 | ||
2397 | ||
2398 | http = (http_t *)h->ptr; | |
2399 | ||
2400 | if (!http->blocking) | |
2401 | { | |
2402 | /* | |
2403 | * Make sure we have data before we read... | |
2404 | */ | |
2405 | ||
2406 | if (!http_wait(http, 10000, 0)) | |
2407 | { | |
b86bc4cf | 2408 | #ifdef WIN32 |
2409 | http->error = WSAETIMEDOUT; | |
2410 | #else | |
411affcf | 2411 | http->error = ETIMEDOUT; |
b86bc4cf | 2412 | #endif /* WIN32 */ |
2413 | ||
411affcf | 2414 | return (-1); |
2415 | } | |
2416 | } | |
2417 | ||
2418 | return (recv(http->fd, buf, size, 0)); | |
2419 | } | |
2420 | ||
2421 | ||
2422 | /* | |
2423 | * 'http_bio_write()' - Write data for OpenSSL. | |
2424 | */ | |
2425 | ||
2426 | static int /* O - Bytes written */ | |
2427 | http_bio_write(BIO *h, /* I - BIO data */ | |
2428 | const char *buf, /* I - Buffer to write */ | |
2429 | int num) /* I - Number of bytes to write */ | |
2430 | { | |
2431 | return (send(((http_t *)h->ptr)->fd, buf, num, 0)); | |
2432 | } | |
2433 | #endif /* HAVE_SSL && HAVE_LIBSSL */ | |
2434 | ||
2435 | ||
ef416fc2 | 2436 | /* |
2437 | * 'http_field()' - Return the field index for a field name. | |
2438 | */ | |
2439 | ||
2440 | static http_field_t /* O - Field index */ | |
2441 | http_field(const char *name) /* I - String name */ | |
2442 | { | |
2443 | int i; /* Looping var */ | |
2444 | ||
2445 | ||
2446 | for (i = 0; i < HTTP_FIELD_MAX; i ++) | |
2447 | if (strcasecmp(name, http_fields[i]) == 0) | |
2448 | return ((http_field_t)i); | |
2449 | ||
2450 | return (HTTP_FIELD_UNKNOWN); | |
2451 | } | |
2452 | ||
2453 | ||
2454 | #ifdef HAVE_SSL | |
2455 | /* | |
2456 | * 'http_read_ssl()' - Read from a SSL/TLS connection. | |
2457 | */ | |
2458 | ||
2459 | static int /* O - Bytes read */ | |
ecdc0628 | 2460 | http_read_ssl(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 2461 | char *buf, /* I - Buffer to store data */ |
2462 | int len) /* I - Length of buffer */ | |
2463 | { | |
2464 | # if defined(HAVE_LIBSSL) | |
2465 | return (SSL_read((SSL *)(http->tls), buf, len)); | |
2466 | ||
2467 | # elif defined(HAVE_GNUTLS) | |
2468 | return (gnutls_record_recv(((http_tls_t *)(http->tls))->session, buf, len)); | |
2469 | ||
2470 | # elif defined(HAVE_CDSASSL) | |
fa73b229 | 2471 | int result; /* Return value */ |
ef416fc2 | 2472 | OSStatus error; /* Error info */ |
2473 | size_t processed; /* Number of bytes processed */ | |
2474 | ||
2475 | ||
89d46774 | 2476 | error = SSLRead(((http_tls_t *)http->tls)->session, buf, len, &processed); |
ef416fc2 | 2477 | |
fa73b229 | 2478 | switch (error) |
ef416fc2 | 2479 | { |
fa73b229 | 2480 | case 0 : |
2481 | result = (int)processed; | |
2482 | break; | |
2483 | case errSSLClosedGraceful : | |
2484 | result = 0; | |
2485 | break; | |
2486 | case errSSLWouldBlock : | |
b423cd4c | 2487 | if (processed) |
2488 | result = (int)processed; | |
2489 | else | |
2490 | { | |
2491 | result = -1; | |
2492 | errno = EINTR; | |
2493 | } | |
fa73b229 | 2494 | break; |
2495 | default : | |
2496 | errno = EPIPE; | |
2497 | result = -1; | |
2498 | break; | |
ef416fc2 | 2499 | } |
fa73b229 | 2500 | |
2501 | return (result); | |
ef416fc2 | 2502 | # endif /* HAVE_LIBSSL */ |
2503 | } | |
2504 | #endif /* HAVE_SSL */ | |
2505 | ||
2506 | ||
2507 | /* | |
2508 | * 'http_send()' - Send a request with all fields and the trailing blank line. | |
2509 | */ | |
2510 | ||
2511 | static int /* O - 0 on success, non-zero on error */ | |
ecdc0628 | 2512 | http_send(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 2513 | http_state_t request, /* I - Request code */ |
2514 | const char *uri) /* I - URI */ | |
2515 | { | |
2516 | int i; /* Looping var */ | |
2517 | char *ptr, /* Pointer in buffer */ | |
2518 | buf[1024]; /* Encoded URI buffer */ | |
2519 | static const char * const codes[] = | |
2520 | { /* Request code strings */ | |
2521 | NULL, | |
2522 | "OPTIONS", | |
2523 | "GET", | |
2524 | NULL, | |
2525 | "HEAD", | |
2526 | "POST", | |
2527 | NULL, | |
2528 | NULL, | |
2529 | "PUT", | |
2530 | NULL, | |
2531 | "DELETE", | |
2532 | "TRACE", | |
2533 | "CLOSE" | |
2534 | }; | |
2535 | static const char hex[] = "0123456789ABCDEF"; | |
2536 | /* Hex digits */ | |
2537 | ||
2538 | ||
2539 | DEBUG_printf(("http_send(http=%p, request=HTTP_%s, uri=\"%s\")\n", | |
2540 | http, codes[request], uri)); | |
2541 | ||
2542 | if (http == NULL || uri == NULL) | |
2543 | return (-1); | |
2544 | ||
2545 | /* | |
2546 | * Set the User-Agent field if it isn't already... | |
2547 | */ | |
2548 | ||
2549 | if (!http->fields[HTTP_FIELD_USER_AGENT][0]) | |
2550 | httpSetField(http, HTTP_FIELD_USER_AGENT, CUPS_MINIMAL); | |
2551 | ||
2552 | /* | |
2553 | * Encode the URI as needed... | |
2554 | */ | |
2555 | ||
2556 | for (ptr = buf; *uri != '\0' && ptr < (buf + sizeof(buf) - 1); uri ++) | |
2557 | if (*uri <= ' ' || *uri >= 127) | |
2558 | { | |
2559 | if (ptr < (buf + sizeof(buf) - 1)) | |
2560 | *ptr ++ = '%'; | |
2561 | if (ptr < (buf + sizeof(buf) - 1)) | |
2562 | *ptr ++ = hex[(*uri >> 4) & 15]; | |
2563 | if (ptr < (buf + sizeof(buf) - 1)) | |
2564 | *ptr ++ = hex[*uri & 15]; | |
2565 | } | |
2566 | else | |
2567 | *ptr ++ = *uri; | |
2568 | ||
2569 | *ptr = '\0'; | |
2570 | ||
2571 | /* | |
2572 | * See if we had an error the last time around; if so, reconnect... | |
2573 | */ | |
2574 | ||
2575 | if (http->status == HTTP_ERROR || http->status >= HTTP_BAD_REQUEST) | |
fa73b229 | 2576 | if (httpReconnect(http)) |
2577 | return (-1); | |
ef416fc2 | 2578 | |
d09495fa | 2579 | /* |
2580 | * Flush any written data that is pending... | |
2581 | */ | |
2582 | ||
2583 | if (http->wused) | |
2584 | httpFlushWrite(http); | |
2585 | ||
ef416fc2 | 2586 | /* |
2587 | * Send the request header... | |
2588 | */ | |
2589 | ||
d09495fa | 2590 | http->state = request; |
2591 | http->data_encoding = HTTP_ENCODE_FIELDS; | |
2592 | ||
ef416fc2 | 2593 | if (request == HTTP_POST || request == HTTP_PUT) |
2594 | http->state ++; | |
2595 | ||
2596 | http->status = HTTP_CONTINUE; | |
2597 | ||
2598 | #ifdef HAVE_SSL | |
2599 | if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls) | |
2600 | { | |
2601 | httpSetField(http, HTTP_FIELD_CONNECTION, "Upgrade"); | |
2602 | httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.0,SSL/2.0,SSL/3.0"); | |
2603 | } | |
2604 | #endif /* HAVE_SSL */ | |
2605 | ||
2606 | if (httpPrintf(http, "%s %s HTTP/1.1\r\n", codes[request], buf) < 1) | |
2607 | { | |
2608 | http->status = HTTP_ERROR; | |
2609 | return (-1); | |
2610 | } | |
2611 | ||
2612 | for (i = 0; i < HTTP_FIELD_MAX; i ++) | |
2613 | if (http->fields[i][0] != '\0') | |
2614 | { | |
f7deaa1a | 2615 | DEBUG_printf(("%s: %s\n", http_fields[i], httpGetField(http, i))); |
ef416fc2 | 2616 | |
f7deaa1a | 2617 | if (httpPrintf(http, "%s: %s\r\n", http_fields[i], |
2618 | httpGetField(http, i)) < 1) | |
ef416fc2 | 2619 | { |
2620 | http->status = HTTP_ERROR; | |
2621 | return (-1); | |
2622 | } | |
2623 | } | |
2624 | ||
2625 | if (http->cookie) | |
2626 | if (httpPrintf(http, "Cookie: $Version=0; %s\r\n", http->cookie) < 1) | |
2627 | { | |
2628 | http->status = HTTP_ERROR; | |
2629 | return (-1); | |
2630 | } | |
2631 | ||
b423cd4c | 2632 | if (http->expect == HTTP_CONTINUE && |
2633 | (http->state == HTTP_POST_RECV || http->state == HTTP_PUT_RECV)) | |
2634 | if (httpPrintf(http, "Expect: 100-continue\r\n") < 1) | |
2635 | { | |
2636 | http->status = HTTP_ERROR; | |
2637 | return (-1); | |
2638 | } | |
2639 | ||
ef416fc2 | 2640 | if (httpPrintf(http, "\r\n") < 1) |
2641 | { | |
2642 | http->status = HTTP_ERROR; | |
2643 | return (-1); | |
2644 | } | |
2645 | ||
d09495fa | 2646 | httpFlushWrite(http); |
ef416fc2 | 2647 | httpGetLength2(http); |
2648 | httpClearFields(http); | |
2649 | ||
f7deaa1a | 2650 | /* |
b94498cf | 2651 | * The Kerberos and AuthRef authentication strings can only be used once... |
f7deaa1a | 2652 | */ |
2653 | ||
bc44d920 | 2654 | if (http->field_authorization && http->authstring && |
b94498cf | 2655 | (!strncmp(http->authstring, "Negotiate", 9) || |
2656 | !strncmp(http->authstring, "AuthRef", 7))) | |
f7deaa1a | 2657 | { |
2658 | http->_authstring[0] = '\0'; | |
2659 | ||
2660 | if (http->authstring != http->_authstring) | |
2661 | free(http->authstring); | |
2662 | ||
2663 | http->authstring = http->_authstring; | |
2664 | } | |
2665 | ||
ef416fc2 | 2666 | return (0); |
2667 | } | |
2668 | ||
2669 | ||
2670 | #ifdef HAVE_SSL | |
2671 | /* | |
2672 | * 'http_setup_ssl()' - Set up SSL/TLS support on a connection. | |
2673 | */ | |
2674 | ||
2675 | static int /* O - Status of connection */ | |
ecdc0628 | 2676 | http_setup_ssl(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 2677 | { |
2678 | # ifdef HAVE_LIBSSL | |
89d46774 | 2679 | SSL_CTX *context; /* Context for encryption */ |
2680 | SSL *conn; /* Connection for encryption */ | |
411affcf | 2681 | BIO *bio; /* BIO data */ |
ef416fc2 | 2682 | # elif defined(HAVE_GNUTLS) |
89d46774 | 2683 | http_tls_t *conn; /* TLS session object */ |
ef416fc2 | 2684 | gnutls_certificate_client_credentials *credentials; |
89d46774 | 2685 | /* TLS credentials */ |
ef416fc2 | 2686 | # elif defined(HAVE_CDSASSL) |
89d46774 | 2687 | OSStatus error; /* Error code */ |
2688 | http_tls_t *conn; /* CDSA connection information */ | |
ef416fc2 | 2689 | # endif /* HAVE_LIBSSL */ |
2690 | ||
2691 | ||
2692 | DEBUG_printf(("http_setup_ssl(http=%p)\n", http)); | |
2693 | ||
2694 | # ifdef HAVE_LIBSSL | |
2695 | context = SSL_CTX_new(SSLv23_client_method()); | |
2696 | ||
2697 | SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */ | |
2698 | ||
411affcf | 2699 | bio = BIO_new(_httpBIOMethods()); |
2700 | BIO_ctrl(bio, BIO_C_SET_FILE_PTR, 0, (char *)http); | |
2701 | ||
ef416fc2 | 2702 | conn = SSL_new(context); |
411affcf | 2703 | SSL_set_bio(conn, bio, bio); |
ef416fc2 | 2704 | |
ef416fc2 | 2705 | if (SSL_connect(conn) != 1) |
2706 | { | |
2707 | # ifdef DEBUG | |
2708 | unsigned long error; /* Error code */ | |
2709 | ||
2710 | while ((error = ERR_get_error()) != 0) | |
2711 | printf("http_setup_ssl: %s\n", ERR_error_string(error, NULL)); | |
2712 | # endif /* DEBUG */ | |
2713 | ||
2714 | SSL_CTX_free(context); | |
2715 | SSL_free(conn); | |
2716 | ||
2717 | # ifdef WIN32 | |
2718 | http->error = WSAGetLastError(); | |
2719 | # else | |
2720 | http->error = errno; | |
2721 | # endif /* WIN32 */ | |
2722 | http->status = HTTP_ERROR; | |
2723 | ||
2724 | return (HTTP_ERROR); | |
2725 | } | |
2726 | ||
2727 | # elif defined(HAVE_GNUTLS) | |
89d46774 | 2728 | if ((conn = (http_tls_t *)malloc(sizeof(http_tls_t))) == NULL) |
ef416fc2 | 2729 | { |
2730 | http->error = errno; | |
2731 | http->status = HTTP_ERROR; | |
2732 | ||
2733 | return (-1); | |
2734 | } | |
2735 | ||
2736 | credentials = (gnutls_certificate_client_credentials *) | |
2737 | malloc(sizeof(gnutls_certificate_client_credentials)); | |
2738 | if (credentials == NULL) | |
2739 | { | |
2740 | free(conn); | |
2741 | ||
2742 | http->error = errno; | |
2743 | http->status = HTTP_ERROR; | |
2744 | ||
2745 | return (-1); | |
2746 | } | |
2747 | ||
2748 | gnutls_certificate_allocate_credentials(credentials); | |
2749 | ||
2750 | gnutls_init(&(conn->session), GNUTLS_CLIENT); | |
2751 | gnutls_set_default_priority(conn->session); | |
2752 | gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials); | |
411affcf | 2753 | gnutls_transport_set_ptr(conn->session, (gnutls_transport_ptr)http); |
2754 | gnutls_transport_set_pull_function(conn->session, _httpReadGNUTLS); | |
2755 | gnutls_transport_set_push_function(conn->session, _httpWriteGNUTLS); | |
ef416fc2 | 2756 | |
2757 | if ((gnutls_handshake(conn->session)) != GNUTLS_E_SUCCESS) | |
2758 | { | |
2759 | http->error = errno; | |
2760 | http->status = HTTP_ERROR; | |
2761 | ||
2762 | return (-1); | |
2763 | } | |
2764 | ||
2765 | conn->credentials = credentials; | |
2766 | ||
2767 | # elif defined(HAVE_CDSASSL) | |
89d46774 | 2768 | conn = (http_tls_t *)calloc(1, sizeof(http_tls_t)); |
e53920b9 | 2769 | |
89d46774 | 2770 | if (conn == NULL) |
2771 | return (-1); | |
e53920b9 | 2772 | |
89d46774 | 2773 | if ((error = SSLNewContext(false, &conn->session))) |
e53920b9 | 2774 | { |
89d46774 | 2775 | http->error = error; |
2776 | http->status = HTTP_ERROR; | |
e53920b9 | 2777 | |
89d46774 | 2778 | free(conn); |
2779 | return (-1); | |
e53920b9 | 2780 | } |
ef416fc2 | 2781 | |
89d46774 | 2782 | /* |
2783 | * Use a union to resolve warnings about int/pointer size mismatches... | |
2784 | */ | |
2785 | ||
411affcf | 2786 | error = SSLSetConnection(conn->session, http); |
89d46774 | 2787 | |
2788 | if (!error) | |
2789 | error = SSLSetIOFuncs(conn->session, _httpReadCDSA, _httpWriteCDSA); | |
2790 | ||
ef416fc2 | 2791 | if (!error) |
89d46774 | 2792 | error = SSLSetAllowsExpiredCerts(conn->session, true); |
ef416fc2 | 2793 | |
2794 | if (!error) | |
89d46774 | 2795 | error = SSLSetAllowsAnyRoot(conn->session, true); |
ef416fc2 | 2796 | |
ed486911 | 2797 | if (!error) |
2798 | error = SSLSetProtocolVersionEnabled(conn->session, kSSLProtocol2, false); | |
2799 | ||
ef416fc2 | 2800 | if (!error) |
b423cd4c | 2801 | { |
89d46774 | 2802 | while ((error = SSLHandshake(conn->session)) == errSSLWouldBlock) |
b423cd4c | 2803 | usleep(1000); |
2804 | } | |
ef416fc2 | 2805 | |
89d46774 | 2806 | if (error) |
ef416fc2 | 2807 | { |
2808 | http->error = error; | |
2809 | http->status = HTTP_ERROR; | |
2810 | ||
89d46774 | 2811 | SSLDisposeContext(conn->session); |
ef416fc2 | 2812 | |
89d46774 | 2813 | free(conn); |
ef416fc2 | 2814 | |
2815 | return (-1); | |
2816 | } | |
2817 | # endif /* HAVE_CDSASSL */ | |
2818 | ||
2819 | http->tls = conn; | |
2820 | return (0); | |
2821 | } | |
2822 | #endif /* HAVE_SSL */ | |
2823 | ||
2824 | ||
2825 | #ifdef HAVE_SSL | |
2826 | /* | |
2827 | * 'http_shutdown_ssl()' - Shut down SSL/TLS on a connection. | |
2828 | */ | |
2829 | ||
2830 | static void | |
89d46774 | 2831 | http_shutdown_ssl(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 2832 | { |
2833 | # ifdef HAVE_LIBSSL | |
89d46774 | 2834 | SSL_CTX *context; /* Context for encryption */ |
2835 | SSL *conn; /* Connection for encryption */ | |
ef416fc2 | 2836 | |
2837 | ||
2838 | conn = (SSL *)(http->tls); | |
2839 | context = SSL_get_SSL_CTX(conn); | |
2840 | ||
2841 | SSL_shutdown(conn); | |
2842 | SSL_CTX_free(context); | |
2843 | SSL_free(conn); | |
2844 | ||
2845 | # elif defined(HAVE_GNUTLS) | |
89d46774 | 2846 | http_tls_t *conn; /* Encryption session */ |
ef416fc2 | 2847 | gnutls_certificate_client_credentials *credentials; |
89d46774 | 2848 | /* TLS credentials */ |
ef416fc2 | 2849 | |
2850 | ||
2851 | conn = (http_tls_t *)(http->tls); | |
2852 | credentials = (gnutls_certificate_client_credentials *)(conn->credentials); | |
2853 | ||
2854 | gnutls_bye(conn->session, GNUTLS_SHUT_RDWR); | |
2855 | gnutls_deinit(conn->session); | |
2856 | gnutls_certificate_free_credentials(*credentials); | |
2857 | free(credentials); | |
2858 | free(conn); | |
2859 | ||
2860 | # elif defined(HAVE_CDSASSL) | |
89d46774 | 2861 | http_tls_t *conn; /* CDSA connection information */ |
2862 | ||
2863 | ||
2864 | conn = (http_tls_t *)(http->tls); | |
2865 | ||
2866 | while (SSLClose(conn->session) == errSSLWouldBlock) | |
b423cd4c | 2867 | usleep(1000); |
2868 | ||
89d46774 | 2869 | SSLDisposeContext(conn->session); |
2870 | ||
2871 | if (conn->certsArray) | |
2872 | CFRelease(conn->certsArray); | |
2873 | ||
2874 | free(conn); | |
ef416fc2 | 2875 | # endif /* HAVE_LIBSSL */ |
2876 | ||
2877 | http->tls = NULL; | |
2878 | } | |
2879 | #endif /* HAVE_SSL */ | |
2880 | ||
2881 | ||
2882 | #ifdef HAVE_SSL | |
2883 | /* | |
2884 | * 'http_upgrade()' - Force upgrade to TLS encryption. | |
2885 | */ | |
2886 | ||
89d46774 | 2887 | static int /* O - Status of connection */ |
2888 | http_upgrade(http_t *http) /* I - HTTP connection */ | |
ef416fc2 | 2889 | { |
89d46774 | 2890 | int ret; /* Return value */ |
2891 | http_t myhttp; /* Local copy of HTTP data */ | |
ef416fc2 | 2892 | |
2893 | ||
2894 | DEBUG_printf(("http_upgrade(%p)\n", http)); | |
2895 | ||
2896 | /* | |
2897 | * Copy the HTTP data to a local variable so we can do the OPTIONS | |
2898 | * request without interfering with the existing request data... | |
2899 | */ | |
2900 | ||
2901 | memcpy(&myhttp, http, sizeof(myhttp)); | |
2902 | ||
2903 | /* | |
2904 | * Send an OPTIONS request to the server, requiring SSL or TLS | |
2905 | * encryption on the link... | |
2906 | */ | |
2907 | ||
f7deaa1a | 2908 | http->field_authorization = NULL; /* Don't free the auth string */ |
2909 | ||
b86bc4cf | 2910 | httpClearFields(http); |
2911 | httpSetField(http, HTTP_FIELD_CONNECTION, "upgrade"); | |
2912 | httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.0, SSL/2.0, SSL/3.0"); | |
ef416fc2 | 2913 | |
b86bc4cf | 2914 | if ((ret = httpOptions(http, "*")) == 0) |
ef416fc2 | 2915 | { |
2916 | /* | |
2917 | * Wait for the secure connection... | |
2918 | */ | |
2919 | ||
b86bc4cf | 2920 | while (httpUpdate(http) == HTTP_CONTINUE); |
ef416fc2 | 2921 | } |
2922 | ||
b86bc4cf | 2923 | httpFlush(http); |
ef416fc2 | 2924 | |
2925 | /* | |
b86bc4cf | 2926 | * Restore the HTTP request data... |
ef416fc2 | 2927 | */ |
2928 | ||
b86bc4cf | 2929 | memcpy(http->fields, myhttp.fields, sizeof(http->fields)); |
f7deaa1a | 2930 | http->data_encoding = myhttp.data_encoding; |
2931 | http->data_remaining = myhttp.data_remaining; | |
2932 | http->_data_remaining = myhttp._data_remaining; | |
2933 | http->expect = myhttp.expect; | |
2934 | http->field_authorization = myhttp.field_authorization; | |
bc44d920 | 2935 | http->digest_tries = myhttp.digest_tries; |
ef416fc2 | 2936 | |
2937 | /* | |
2938 | * See if we actually went secure... | |
2939 | */ | |
2940 | ||
2941 | if (!http->tls) | |
2942 | { | |
2943 | /* | |
2944 | * Server does not support HTTP upgrade... | |
2945 | */ | |
2946 | ||
2947 | DEBUG_puts("Server does not support HTTP upgrade!"); | |
2948 | ||
2949 | # ifdef WIN32 | |
2950 | closesocket(http->fd); | |
2951 | # else | |
2952 | close(http->fd); | |
2953 | # endif | |
2954 | ||
2955 | http->fd = -1; | |
2956 | ||
2957 | return (-1); | |
2958 | } | |
2959 | else | |
2960 | return (ret); | |
2961 | } | |
2962 | #endif /* HAVE_SSL */ | |
2963 | ||
2964 | ||
2965 | /* | |
2966 | * 'http_wait()' - Wait for data available on a connection. | |
2967 | */ | |
2968 | ||
2969 | static int /* O - 1 if data is available, 0 otherwise */ | |
ecdc0628 | 2970 | http_wait(http_t *http, /* I - HTTP connection */ |
411affcf | 2971 | int msec, /* I - Milliseconds to wait */ |
2972 | int usessl) /* I - Use SSL context? */ | |
ef416fc2 | 2973 | { |
f7deaa1a | 2974 | #ifdef HAVE_POLL |
2975 | struct pollfd pfd; /* Polled file descriptor */ | |
2976 | #else | |
2977 | fd_set input_set; /* select() input set */ | |
ef416fc2 | 2978 | struct timeval timeout; /* Timeout */ |
f7deaa1a | 2979 | #endif /* HAVE_POLL */ |
2980 | int nfds; /* Result from select()/poll() */ | |
ef416fc2 | 2981 | |
2982 | ||
2983 | DEBUG_printf(("http_wait(http=%p, msec=%d)\n", http, msec)); | |
2984 | ||
fa73b229 | 2985 | if (http->fd < 0) |
2986 | return (0); | |
2987 | ||
ef416fc2 | 2988 | /* |
2989 | * Check the SSL/TLS buffers for data first... | |
2990 | */ | |
2991 | ||
2992 | #ifdef HAVE_SSL | |
411affcf | 2993 | if (http->tls && usessl) |
ef416fc2 | 2994 | { |
2995 | # ifdef HAVE_LIBSSL | |
2996 | if (SSL_pending((SSL *)(http->tls))) | |
2997 | return (1); | |
2998 | # elif defined(HAVE_GNUTLS) | |
2999 | if (gnutls_record_check_pending(((http_tls_t *)(http->tls))->session)) | |
3000 | return (1); | |
3001 | # elif defined(HAVE_CDSASSL) | |
3002 | size_t bytes; /* Bytes that are available */ | |
3003 | ||
89d46774 | 3004 | if (!SSLGetBufferedReadSize(((http_tls_t *)http->tls)->session, &bytes) && bytes > 0) |
ef416fc2 | 3005 | return (1); |
3006 | # endif /* HAVE_LIBSSL */ | |
3007 | } | |
3008 | #endif /* HAVE_SSL */ | |
3009 | ||
3010 | /* | |
f7deaa1a | 3011 | * Then try doing a select() or poll() to poll the socket... |
ef416fc2 | 3012 | */ |
3013 | ||
f7deaa1a | 3014 | #ifdef HAVE_POLL |
3015 | pfd.fd = http->fd; | |
3016 | pfd.events = POLLIN; | |
ef416fc2 | 3017 | |
f7deaa1a | 3018 | while ((nfds = poll(&pfd, 1, msec)) < 0 && errno == EINTR); |
ef416fc2 | 3019 | |
f7deaa1a | 3020 | #else |
ef416fc2 | 3021 | do |
3022 | { | |
f7deaa1a | 3023 | FD_ZERO(&input_set); |
3024 | FD_SET(http->fd, &input_set); | |
ef416fc2 | 3025 | |
89d46774 | 3026 | DEBUG_printf(("http_wait: msec=%d, http->fd=%d\n", msec, http->fd)); |
3027 | ||
ef416fc2 | 3028 | if (msec >= 0) |
3029 | { | |
3030 | timeout.tv_sec = msec / 1000; | |
3031 | timeout.tv_usec = (msec % 1000) * 1000; | |
3032 | ||
f7deaa1a | 3033 | nfds = select(http->fd + 1, &input_set, NULL, NULL, &timeout); |
ef416fc2 | 3034 | } |
3035 | else | |
f7deaa1a | 3036 | nfds = select(http->fd + 1, &input_set, NULL, NULL, NULL); |
89d46774 | 3037 | |
3038 | DEBUG_printf(("http_wait: select() returned %d...\n", nfds)); | |
ef416fc2 | 3039 | } |
f7deaa1a | 3040 | # ifdef WIN32 |
ef416fc2 | 3041 | while (nfds < 0 && WSAGetLastError() == WSAEINTR); |
f7deaa1a | 3042 | # else |
ef416fc2 | 3043 | while (nfds < 0 && errno == EINTR); |
f7deaa1a | 3044 | # endif /* WIN32 */ |
3045 | #endif /* HAVE_POLL */ | |
ef416fc2 | 3046 | |
89d46774 | 3047 | DEBUG_printf(("http_wait: returning with nfds=%d...\n", nfds)); |
3048 | ||
ef416fc2 | 3049 | return (nfds > 0); |
3050 | } | |
3051 | ||
3052 | ||
3053 | /* | |
3054 | * 'http_write()' - Write a buffer to a HTTP connection. | |
3055 | */ | |
3056 | ||
3057 | static int /* O - Number of bytes written */ | |
ecdc0628 | 3058 | http_write(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 3059 | const char *buffer, /* I - Buffer for data */ |
3060 | int length) /* I - Number of bytes to write */ | |
3061 | { | |
3062 | int tbytes, /* Total bytes sent */ | |
3063 | bytes; /* Bytes sent */ | |
3064 | ||
3065 | ||
3066 | tbytes = 0; | |
3067 | ||
3068 | while (length > 0) | |
3069 | { | |
3070 | #ifdef HAVE_SSL | |
3071 | if (http->tls) | |
3072 | bytes = http_write_ssl(http, buffer, length); | |
3073 | else | |
3074 | #endif /* HAVE_SSL */ | |
3075 | bytes = send(http->fd, buffer, length, 0); | |
3076 | ||
3077 | if (bytes < 0) | |
3078 | { | |
3079 | #ifdef WIN32 | |
3080 | if (WSAGetLastError() != http->error) | |
3081 | { | |
3082 | http->error = WSAGetLastError(); | |
3083 | continue; | |
3084 | } | |
3085 | #else | |
3086 | if (errno == EINTR) | |
3087 | continue; | |
3088 | else if (errno != http->error && errno != ECONNRESET) | |
3089 | { | |
3090 | http->error = errno; | |
3091 | continue; | |
3092 | } | |
3093 | #endif /* WIN32 */ | |
3094 | ||
3095 | DEBUG_puts("http_write: error writing data...\n"); | |
3096 | ||
3097 | return (-1); | |
3098 | } | |
3099 | ||
3100 | buffer += bytes; | |
3101 | tbytes += bytes; | |
3102 | length -= bytes; | |
3103 | } | |
3104 | ||
3105 | #ifdef DEBUG | |
3106 | { | |
3107 | int i, j, ch; | |
3108 | printf("http_write: wrote %d bytes: \n", tbytes); | |
3109 | for (i = 0, buffer -= tbytes; i < tbytes; i += 16) | |
3110 | { | |
3111 | printf(" "); | |
3112 | ||
3113 | for (j = 0; j < 16 && (i + j) < tbytes; j ++) | |
3114 | printf(" %02X", buffer[i + j] & 255); | |
3115 | ||
3116 | while (j < 16) | |
3117 | { | |
3118 | printf(" "); | |
3119 | j ++; | |
3120 | } | |
3121 | ||
3122 | printf(" "); | |
3123 | for (j = 0; j < 16 && (i + j) < tbytes; j ++) | |
3124 | { | |
3125 | ch = buffer[i + j] & 255; | |
3126 | ||
3127 | if (ch < ' ' || ch == 127) | |
3128 | ch = '.'; | |
3129 | ||
3130 | putchar(ch); | |
3131 | } | |
3132 | putchar('\n'); | |
3133 | } | |
3134 | } | |
3135 | #endif /* DEBUG */ | |
3136 | ||
3137 | return (tbytes); | |
3138 | } | |
3139 | ||
3140 | ||
3141 | /* | |
3142 | * 'http_write_chunk()' - Write a chunked buffer. | |
3143 | */ | |
3144 | ||
3145 | static int /* O - Number bytes written */ | |
ecdc0628 | 3146 | http_write_chunk(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 3147 | const char *buffer, /* I - Buffer to write */ |
3148 | int length) /* I - Length of buffer */ | |
3149 | { | |
3150 | char header[255]; /* Chunk header */ | |
3151 | int bytes; /* Bytes written */ | |
3152 | ||
3153 | DEBUG_printf(("http_write_chunk(http=%p, buffer=%p, length=%d)\n", | |
3154 | http, buffer, length)); | |
3155 | ||
3156 | /* | |
3157 | * Write the chunk header, data, and trailer. | |
3158 | */ | |
3159 | ||
3160 | sprintf(header, "%x\r\n", length); | |
b86bc4cf | 3161 | if (http_write(http, header, (int)strlen(header)) < 0) |
ef416fc2 | 3162 | { |
3163 | DEBUG_puts(" http_write of length failed!"); | |
3164 | return (-1); | |
3165 | } | |
3166 | ||
3167 | if ((bytes = http_write(http, buffer, length)) < 0) | |
3168 | { | |
3169 | DEBUG_puts(" http_write of buffer failed!"); | |
3170 | return (-1); | |
3171 | } | |
3172 | ||
3173 | if (http_write(http, "\r\n", 2) < 0) | |
3174 | { | |
3175 | DEBUG_puts(" http_write of CR LF failed!"); | |
3176 | return (-1); | |
3177 | } | |
3178 | ||
3179 | return (bytes); | |
3180 | } | |
3181 | ||
3182 | ||
3183 | #ifdef HAVE_SSL | |
3184 | /* | |
3185 | * 'http_write_ssl()' - Write to a SSL/TLS connection. | |
3186 | */ | |
3187 | ||
3188 | static int /* O - Bytes written */ | |
ecdc0628 | 3189 | http_write_ssl(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 3190 | const char *buf, /* I - Buffer holding data */ |
3191 | int len) /* I - Length of buffer */ | |
3192 | { | |
3193 | # if defined(HAVE_LIBSSL) | |
3194 | return (SSL_write((SSL *)(http->tls), buf, len)); | |
3195 | ||
3196 | # elif defined(HAVE_GNUTLS) | |
3197 | return (gnutls_record_send(((http_tls_t *)(http->tls))->session, buf, len)); | |
3198 | # elif defined(HAVE_CDSASSL) | |
fa73b229 | 3199 | int result; /* Return value */ |
ef416fc2 | 3200 | OSStatus error; /* Error info */ |
3201 | size_t processed; /* Number of bytes processed */ | |
3202 | ||
3203 | ||
89d46774 | 3204 | error = SSLWrite(((http_tls_t *)http->tls)->session, buf, len, &processed); |
ef416fc2 | 3205 | |
fa73b229 | 3206 | switch (error) |
ef416fc2 | 3207 | { |
fa73b229 | 3208 | case 0 : |
3209 | result = (int)processed; | |
3210 | break; | |
3211 | case errSSLClosedGraceful : | |
3212 | result = 0; | |
3213 | break; | |
3214 | case errSSLWouldBlock : | |
b423cd4c | 3215 | if (processed) |
3216 | result = (int)processed; | |
3217 | else | |
3218 | { | |
3219 | result = -1; | |
3220 | errno = EINTR; | |
3221 | } | |
fa73b229 | 3222 | break; |
3223 | default : | |
3224 | errno = EPIPE; | |
3225 | result = -1; | |
3226 | break; | |
ef416fc2 | 3227 | } |
fa73b229 | 3228 | |
3229 | return (result); | |
ef416fc2 | 3230 | # endif /* HAVE_LIBSSL */ |
3231 | } | |
3232 | #endif /* HAVE_SSL */ | |
3233 | ||
3234 | ||
3235 | /* | |
355e94dc | 3236 | * End of "$Id: http.c 6724 2007-07-25 20:39:33Z mike $". |
ef416fc2 | 3237 | */ |