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ef416fc2 | 1 | /* |
757d2cad | 2 | * "$Id: http.c 5226 2006-03-04 22:03:18Z mike $" |
ef416fc2 | 3 | * |
4 | * HTTP routines for the Common UNIX Printing System (CUPS). | |
5 | * | |
fa73b229 | 6 | * Copyright 1997-2006 by Easy Software Products, all rights reserved. |
ef416fc2 | 7 | * |
8 | * These coded instructions, statements, and computer programs are the | |
9 | * property of Easy Software Products and are protected by Federal | |
10 | * copyright law. Distribution and use rights are outlined in the file | |
11 | * "LICENSE.txt" which should have been included with this file. If this | |
12 | * file is missing or damaged please contact Easy Software Products | |
13 | * at: | |
14 | * | |
15 | * Attn: CUPS Licensing Information | |
16 | * Easy Software Products | |
17 | * 44141 Airport View Drive, Suite 204 | |
18 | * Hollywood, Maryland 20636 USA | |
19 | * | |
20 | * Voice: (301) 373-9600 | |
21 | * EMail: cups-info@cups.org | |
22 | * WWW: http://www.cups.org | |
23 | * | |
24 | * This file is subject to the Apple OS-Developed Software exception. | |
25 | * | |
26 | * Contents: | |
27 | * | |
ecdc0628 | 28 | * httpBlocking() - Set blocking/non-blocking behavior on a connection. |
ef416fc2 | 29 | * httpCheck() - Check to see if there is a pending response from |
30 | * the server. | |
31 | * httpClearCookie() - Clear the cookie value(s). | |
ecdc0628 | 32 | * httpClearFields() - Clear HTTP request fields. |
ef416fc2 | 33 | * httpClose() - Close an HTTP connection... |
34 | * httpConnect() - Connect to a HTTP server. | |
35 | * httpConnectEncrypt() - Connect to a HTTP server using encryption. | |
36 | * httpDelete() - Send a DELETE request to the server. | |
37 | * httpEncryption() - Set the required encryption on the link. | |
ecdc0628 | 38 | * httpError() - Get the last error on a connection. |
ef416fc2 | 39 | * httpFlush() - Flush data from a HTTP connection. |
40 | * httpFlushWrite() - Flush data in write buffer. | |
41 | * httpGet() - Send a GET request to the server. | |
ecdc0628 | 42 | * httpGetBlocking() - Get the blocking/non-block state of a connection. |
43 | * httpGetCookie() - Get any cookie data from the response. | |
44 | * httpGetFd() - Get the file descriptor associated with a | |
45 | * connection. | |
46 | * httpGetField() - Get a field value from a request/response. | |
ef416fc2 | 47 | * httpGetLength() - Get the amount of data remaining from the |
48 | * content-length or transfer-encoding fields. | |
49 | * httpGetLength2() - Get the amount of data remaining from the | |
50 | * content-length or transfer-encoding fields. | |
ecdc0628 | 51 | * httpGetStatus() - Get the status of the last HTTP request. |
ef416fc2 | 52 | * httpGetSubField() - Get a sub-field value. |
53 | * httpGets() - Get a line of text from a HTTP connection. | |
54 | * httpHead() - Send a HEAD request to the server. | |
55 | * httpInitialize() - Initialize the HTTP interface library and set the | |
56 | * default HTTP proxy (if any). | |
57 | * httpOptions() - Send an OPTIONS request to the server. | |
58 | * httpPost() - Send a POST request to the server. | |
59 | * httpPrintf() - Print a formatted string to a HTTP connection. | |
60 | * httpPut() - Send a PUT request to the server. | |
61 | * httpRead() - Read data from a HTTP connection. | |
a4d04587 | 62 | * httpRead2() - Read data from a HTTP connection. |
ef416fc2 | 63 | * _httpReadCDSA() - Read function for CDSA decryption code. |
64 | * httpReconnect() - Reconnect to a HTTP server... | |
65 | * httpSetCookie() - Set the cookie value(s)... | |
b423cd4c | 66 | * httpSetExpect() - Set the Expect: header in a request. |
ef416fc2 | 67 | * httpSetField() - Set the value of an HTTP header. |
68 | * httpSetLength() - Set the content-length and transfer-encoding. | |
69 | * httpTrace() - Send an TRACE request to the server. | |
70 | * httpUpdate() - Update the current HTTP state for incoming data. | |
71 | * httpWait() - Wait for data available on a connection. | |
72 | * httpWrite() - Write data to a HTTP connection. | |
a4d04587 | 73 | * httpWrite2() - Write data to a HTTP connection. |
ef416fc2 | 74 | * _httpWriteCDSA() - Write function for CDSA encryption code. |
75 | * http_field() - Return the field index for a field name. | |
76 | * http_read_ssl() - Read from a SSL/TLS connection. | |
77 | * http_send() - Send a request with all fields and the trailing | |
78 | * blank line. | |
79 | * http_setup_ssl() - Set up SSL/TLS on a connection. | |
80 | * http_shutdown_ssl() - Shut down SSL/TLS on a connection. | |
81 | * http_upgrade() - Force upgrade to TLS encryption. | |
82 | * http_wait() - Wait for data available on a connection. | |
83 | * http_write() - Write data to a connection. | |
84 | * http_write_ssl() - Write to a SSL/TLS connection. | |
85 | */ | |
86 | ||
87 | /* | |
88 | * Include necessary headers... | |
89 | */ | |
90 | ||
91 | #include "http-private.h" | |
92 | #include "globals.h" | |
93 | #include "debug.h" | |
94 | #include <stdlib.h> | |
95 | #include <fcntl.h> | |
96 | #include <errno.h> | |
97 | #ifndef WIN32 | |
98 | # include <signal.h> | |
99 | # include <sys/time.h> | |
100 | # include <sys/resource.h> | |
101 | #endif /* !WIN32 */ | |
102 | ||
103 | ||
104 | /* | |
105 | * Some operating systems have done away with the Fxxxx constants for | |
106 | * the fcntl() call; this works around that "feature"... | |
107 | */ | |
108 | ||
109 | #ifndef FNONBLK | |
110 | # define FNONBLK O_NONBLOCK | |
111 | #endif /* !FNONBLK */ | |
112 | ||
113 | ||
114 | /* | |
115 | * Local functions... | |
116 | */ | |
117 | ||
118 | static http_field_t http_field(const char *name); | |
119 | static int http_send(http_t *http, http_state_t request, | |
120 | const char *uri); | |
121 | static int http_wait(http_t *http, int msec); | |
122 | static int http_write(http_t *http, const char *buffer, | |
123 | int length); | |
124 | static int http_write_chunk(http_t *http, const char *buffer, | |
125 | int length); | |
126 | #ifdef HAVE_SSL | |
127 | static int http_read_ssl(http_t *http, char *buf, int len); | |
128 | static int http_setup_ssl(http_t *http); | |
129 | static void http_shutdown_ssl(http_t *http); | |
130 | static int http_upgrade(http_t *http); | |
131 | static int http_write_ssl(http_t *http, const char *buf, int len); | |
132 | #endif /* HAVE_SSL */ | |
133 | ||
134 | ||
135 | /* | |
136 | * Local globals... | |
137 | */ | |
138 | ||
139 | static const char * const http_fields[] = | |
140 | { | |
141 | "Accept-Language", | |
142 | "Accept-Ranges", | |
143 | "Authorization", | |
144 | "Connection", | |
145 | "Content-Encoding", | |
146 | "Content-Language", | |
147 | "Content-Length", | |
148 | "Content-Location", | |
149 | "Content-MD5", | |
150 | "Content-Range", | |
151 | "Content-Type", | |
152 | "Content-Version", | |
153 | "Date", | |
154 | "Host", | |
155 | "If-Modified-Since", | |
156 | "If-Unmodified-since", | |
157 | "Keep-Alive", | |
158 | "Last-Modified", | |
159 | "Link", | |
160 | "Location", | |
161 | "Range", | |
162 | "Referer", | |
163 | "Retry-After", | |
164 | "Transfer-Encoding", | |
165 | "Upgrade", | |
166 | "User-Agent", | |
167 | "WWW-Authenticate" | |
168 | }; | |
169 | ||
170 | ||
ecdc0628 | 171 | /* |
172 | * 'httpBlocking()' - Set blocking/non-blocking behavior on a connection. | |
173 | */ | |
174 | ||
175 | void | |
176 | httpBlocking(http_t *http, /* I - HTTP connection */ | |
177 | int b) /* I - 1 = blocking, 0 = non-blocking */ | |
178 | { | |
179 | if (http) | |
180 | http->blocking = b; | |
181 | } | |
182 | ||
183 | ||
ef416fc2 | 184 | /* |
185 | * 'httpCheck()' - Check to see if there is a pending response from the server. | |
186 | */ | |
187 | ||
ecdc0628 | 188 | int /* O - 0 = no data, 1 = data available */ |
189 | httpCheck(http_t *http) /* I - HTTP connection */ | |
ef416fc2 | 190 | { |
191 | return (httpWait(http, 0)); | |
192 | } | |
193 | ||
194 | ||
195 | /* | |
196 | * 'httpClearCookie()' - Clear the cookie value(s). | |
197 | * | |
198 | * @since CUPS 1.1.19@ | |
199 | */ | |
200 | ||
201 | void | |
ecdc0628 | 202 | httpClearCookie(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 203 | { |
204 | if (!http) | |
205 | return; | |
206 | ||
207 | if (http->cookie) | |
208 | { | |
209 | free(http->cookie); | |
210 | http->cookie = NULL; | |
211 | } | |
212 | } | |
213 | ||
214 | ||
ecdc0628 | 215 | /* |
216 | * 'httpClearFields()' - Clear HTTP request fields. | |
217 | */ | |
218 | ||
219 | void | |
220 | httpClearFields(http_t *http) /* I - HTTP connection */ | |
221 | { | |
222 | if (http) | |
223 | { | |
224 | memset(http->fields, 0, sizeof(http->fields)); | |
225 | httpSetField(http, HTTP_FIELD_HOST, http->hostname); | |
b423cd4c | 226 | |
227 | http->expect = (http_status_t)0; | |
ecdc0628 | 228 | } |
229 | } | |
230 | ||
231 | ||
ef416fc2 | 232 | /* |
233 | * 'httpClose()' - Close an HTTP connection... | |
234 | */ | |
235 | ||
236 | void | |
ecdc0628 | 237 | httpClose(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 238 | { |
239 | DEBUG_printf(("httpClose(http=%p)\n", http)); | |
240 | ||
241 | if (!http) | |
242 | return; | |
243 | ||
244 | httpAddrFreeList(http->addrlist); | |
245 | ||
246 | if (http->input_set) | |
247 | free(http->input_set); | |
248 | ||
249 | if (http->cookie) | |
250 | free(http->cookie); | |
251 | ||
252 | #ifdef HAVE_SSL | |
253 | if (http->tls) | |
254 | http_shutdown_ssl(http); | |
255 | #endif /* HAVE_SSL */ | |
256 | ||
257 | #ifdef WIN32 | |
258 | closesocket(http->fd); | |
259 | #else | |
260 | close(http->fd); | |
261 | #endif /* WIN32 */ | |
262 | ||
263 | free(http); | |
264 | } | |
265 | ||
266 | ||
267 | /* | |
268 | * 'httpConnect()' - Connect to a HTTP server. | |
269 | */ | |
270 | ||
271 | http_t * /* O - New HTTP connection */ | |
272 | httpConnect(const char *host, /* I - Host to connect to */ | |
273 | int port) /* I - Port number */ | |
274 | { | |
275 | http_encryption_t encryption; /* Type of encryption to use */ | |
276 | ||
277 | ||
278 | /* | |
279 | * Set the default encryption status... | |
280 | */ | |
281 | ||
282 | if (port == 443) | |
283 | encryption = HTTP_ENCRYPT_ALWAYS; | |
284 | else | |
285 | encryption = HTTP_ENCRYPT_IF_REQUESTED; | |
286 | ||
287 | return (httpConnectEncrypt(host, port, encryption)); | |
288 | } | |
289 | ||
290 | ||
291 | /* | |
292 | * 'httpConnectEncrypt()' - Connect to a HTTP server using encryption. | |
293 | */ | |
294 | ||
295 | http_t * /* O - New HTTP connection */ | |
296 | httpConnectEncrypt( | |
297 | const char *host, /* I - Host to connect to */ | |
298 | int port, /* I - Port number */ | |
299 | http_encryption_t encryption) /* I - Type of encryption to use */ | |
300 | { | |
301 | http_t *http; /* New HTTP connection */ | |
302 | http_addrlist_t *addrlist; /* Host address data */ | |
303 | char service[255]; /* Service name */ | |
304 | ||
305 | ||
306 | DEBUG_printf(("httpConnectEncrypt(host=\"%s\", port=%d, encryption=%d)\n", | |
307 | host ? host : "(null)", port, encryption)); | |
308 | ||
309 | if (!host) | |
310 | return (NULL); | |
311 | ||
312 | httpInitialize(); | |
313 | ||
314 | /* | |
315 | * Lookup the host... | |
316 | */ | |
317 | ||
318 | sprintf(service, "%d", port); | |
319 | ||
320 | if ((addrlist = httpAddrGetList(host, AF_UNSPEC, service)) == NULL) | |
321 | return (NULL); | |
322 | ||
323 | /* | |
324 | * Allocate memory for the structure... | |
325 | */ | |
326 | ||
327 | http = calloc(sizeof(http_t), 1); | |
328 | if (http == NULL) | |
329 | return (NULL); | |
330 | ||
331 | http->version = HTTP_1_1; | |
332 | http->blocking = 1; | |
333 | http->activity = time(NULL); | |
334 | http->fd = -1; | |
335 | ||
336 | /* | |
337 | * Set the encryption status... | |
338 | */ | |
339 | ||
340 | if (port == 443) /* Always use encryption for https */ | |
341 | http->encryption = HTTP_ENCRYPT_ALWAYS; | |
342 | else | |
343 | http->encryption = encryption; | |
344 | ||
345 | /* | |
346 | * Loop through the addresses we have until one of them connects... | |
347 | */ | |
348 | ||
349 | strlcpy(http->hostname, host, sizeof(http->hostname)); | |
350 | ||
351 | /* | |
352 | * Connect to the remote system... | |
353 | */ | |
354 | ||
355 | http->addrlist = addrlist; | |
356 | ||
357 | if (!httpReconnect(http)) | |
358 | return (http); | |
359 | ||
360 | /* | |
361 | * Could not connect to any known address - bail out! | |
362 | */ | |
363 | ||
364 | httpAddrFreeList(addrlist); | |
365 | ||
366 | free(http); | |
367 | ||
368 | return (NULL); | |
369 | } | |
370 | ||
371 | ||
372 | /* | |
373 | * 'httpDelete()' - Send a DELETE request to the server. | |
374 | */ | |
375 | ||
376 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 377 | httpDelete(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 378 | const char *uri) /* I - URI to delete */ |
379 | { | |
380 | return (http_send(http, HTTP_DELETE, uri)); | |
381 | } | |
382 | ||
383 | ||
384 | /* | |
385 | * 'httpEncryption()' - Set the required encryption on the link. | |
386 | */ | |
387 | ||
388 | int /* O - -1 on error, 0 on success */ | |
ecdc0628 | 389 | httpEncryption(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 390 | http_encryption_t e) /* I - New encryption preference */ |
391 | { | |
392 | DEBUG_printf(("httpEncryption(http=%p, e=%d)\n", http, e)); | |
393 | ||
394 | #ifdef HAVE_SSL | |
395 | if (!http) | |
396 | return (0); | |
397 | ||
398 | http->encryption = e; | |
399 | ||
400 | if ((http->encryption == HTTP_ENCRYPT_ALWAYS && !http->tls) || | |
401 | (http->encryption == HTTP_ENCRYPT_NEVER && http->tls)) | |
402 | return (httpReconnect(http)); | |
403 | else if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls) | |
404 | return (http_upgrade(http)); | |
405 | else | |
406 | return (0); | |
407 | #else | |
408 | if (e == HTTP_ENCRYPT_ALWAYS || e == HTTP_ENCRYPT_REQUIRED) | |
409 | return (-1); | |
410 | else | |
411 | return (0); | |
412 | #endif /* HAVE_SSL */ | |
413 | } | |
414 | ||
415 | ||
ecdc0628 | 416 | /* |
417 | * 'httpError()' - Get the last error on a connection. | |
418 | */ | |
419 | ||
420 | int /* O - Error code (errno) value */ | |
421 | httpError(http_t *http) /* I - HTTP connection */ | |
422 | { | |
423 | if (http) | |
424 | return (http->error); | |
425 | else | |
426 | return (EINVAL); | |
427 | } | |
428 | ||
429 | ||
ef416fc2 | 430 | /* |
431 | * 'httpFlush()' - Flush data from a HTTP connection. | |
432 | */ | |
433 | ||
434 | void | |
ecdc0628 | 435 | httpFlush(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 436 | { |
437 | char buffer[8192]; /* Junk buffer */ | |
fa73b229 | 438 | int blocking; /* To block or not to block */ |
ef416fc2 | 439 | |
440 | ||
441 | DEBUG_printf(("httpFlush(http=%p), state=%d\n", http, http->state)); | |
442 | ||
fa73b229 | 443 | /* |
444 | * Temporarily set non-blocking mode so we don't get stuck in httpRead()... | |
445 | */ | |
446 | ||
447 | blocking = http->blocking; | |
448 | http->blocking = 0; | |
449 | ||
450 | /* | |
451 | * Read any data we can... | |
452 | */ | |
453 | ||
a4d04587 | 454 | while (httpRead2(http, buffer, sizeof(buffer)) > 0); |
fa73b229 | 455 | |
456 | /* | |
457 | * Restore blocking and reset the connection if we didn't get all of | |
458 | * the remaining data... | |
459 | */ | |
460 | ||
461 | http->blocking = blocking; | |
462 | ||
463 | if (http->state != HTTP_WAITING && http->fd >= 0) | |
464 | { | |
465 | /* | |
466 | * Didn't get the data back, so close the current connection. | |
467 | */ | |
468 | ||
469 | http->state = HTTP_WAITING; | |
470 | ||
471 | #ifdef HAVE_SSL | |
472 | if (http->tls) | |
473 | http_shutdown_ssl(http); | |
474 | #endif /* HAVE_SSL */ | |
475 | ||
476 | #ifdef WIN32 | |
477 | closesocket(http->fd); | |
478 | #else | |
479 | close(http->fd); | |
480 | #endif /* WIN32 */ | |
481 | ||
482 | http->fd = -1; | |
483 | } | |
ef416fc2 | 484 | } |
485 | ||
486 | ||
487 | /* | |
488 | * 'httpFlushWrite()' - Flush data in write buffer. | |
489 | * | |
490 | * @since CUPS 1.2@ | |
491 | */ | |
492 | ||
493 | int /* O - Bytes written or -1 on error */ | |
ecdc0628 | 494 | httpFlushWrite(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 495 | { |
496 | int bytes; /* Bytes written */ | |
497 | ||
498 | ||
499 | DEBUG_printf(("httpFlushWrite(http=%p)\n", http)); | |
500 | ||
501 | if (!http || !http->wused) | |
502 | return (0); | |
503 | ||
504 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
505 | bytes = http_write_chunk(http, http->wbuffer, http->wused); | |
506 | else | |
507 | bytes = http_write(http, http->wbuffer, http->wused); | |
508 | ||
509 | http->wused = 0; | |
510 | ||
511 | return (bytes); | |
512 | } | |
513 | ||
514 | ||
515 | /* | |
516 | * 'httpGet()' - Send a GET request to the server. | |
517 | */ | |
518 | ||
519 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 520 | httpGet(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 521 | const char *uri) /* I - URI to get */ |
522 | { | |
523 | return (http_send(http, HTTP_GET, uri)); | |
524 | } | |
525 | ||
526 | ||
ecdc0628 | 527 | /* |
528 | * 'httpGetBlocking()' - Get the blocking/non-block state of a connection. | |
529 | * | |
530 | * @since CUPS 1.2@ | |
531 | */ | |
532 | ||
533 | int /* O - 1 if blocking, 0 if non-blocking */ | |
534 | httpGetBlocking(http_t *http) /* I - HTTP connection */ | |
535 | { | |
536 | return (http ? http->blocking : 0); | |
537 | } | |
538 | ||
539 | ||
540 | /* | |
541 | * 'httpGetCookie()' - Get any cookie data from the response. | |
757d2cad | 542 | * |
543 | * @since CUPS 1.1.19@ | |
ecdc0628 | 544 | */ |
545 | ||
546 | const char * /* O - Cookie data or NULL */ | |
547 | httpGetCookie(http_t *http) /* I - HTTP connecion */ | |
548 | { | |
549 | return (http ? http->cookie : NULL); | |
550 | } | |
551 | ||
552 | ||
553 | /* | |
554 | * 'httpGetFd()' - Get the file descriptor associated with a connection. | |
555 | * | |
556 | * @since CUPS 1.2@ | |
557 | */ | |
558 | ||
559 | int /* O - File descriptor or -1 if none */ | |
560 | httpGetFd(http_t *http) /* I - HTTP connection */ | |
561 | { | |
562 | return (http ? http->fd : -1); | |
563 | } | |
564 | ||
565 | ||
566 | /* | |
567 | * 'httpGetField()' - Get a field value from a request/response. | |
568 | */ | |
569 | ||
570 | const char * /* O - Field value */ | |
571 | httpGetField(http_t *http, /* I - HTTP connection */ | |
572 | http_field_t field) /* I - Field to get */ | |
573 | { | |
574 | if (!http || field <= HTTP_FIELD_UNKNOWN || field >= HTTP_FIELD_MAX) | |
575 | return (NULL); | |
576 | else | |
577 | return (http->fields[field]); | |
578 | } | |
579 | ||
580 | ||
581 | /* | |
582 | * 'httpGetLength()' - Get the amount of data remaining from the | |
583 | * content-length or transfer-encoding fields. | |
584 | * | |
585 | * This function is deprecated and will not return lengths larger than | |
586 | * 2^31 - 1; use httpGetLength2() instead. | |
587 | * | |
588 | * @deprecated@ | |
589 | */ | |
590 | ||
591 | int /* O - Content length */ | |
592 | httpGetLength(http_t *http) /* I - HTTP connection */ | |
593 | { | |
594 | /* | |
595 | * Get the read content length and return the 32-bit value. | |
596 | */ | |
597 | ||
598 | if (http) | |
599 | { | |
600 | httpGetLength2(http); | |
601 | ||
602 | return (http->_data_remaining); | |
603 | } | |
604 | else | |
605 | return (-1); | |
606 | } | |
607 | ||
608 | ||
609 | /* | |
610 | * 'httpGetLength2()' - Get the amount of data remaining from the | |
611 | * content-length or transfer-encoding fields. | |
612 | * | |
613 | * This function returns the complete content length, even for | |
614 | * content larger than 2^31 - 1. | |
615 | * | |
616 | * @since CUPS 1.2@ | |
617 | */ | |
618 | ||
619 | off_t /* O - Content length */ | |
620 | httpGetLength2(http_t *http) /* I - HTTP connection */ | |
621 | { | |
622 | DEBUG_printf(("httpGetLength2(http=%p), state=%d\n", http, http->state)); | |
623 | ||
624 | if (!http) | |
625 | return (-1); | |
626 | ||
627 | if (!strcasecmp(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked")) | |
628 | { | |
629 | DEBUG_puts("httpGetLength2: chunked request!"); | |
630 | ||
631 | http->data_encoding = HTTP_ENCODE_CHUNKED; | |
632 | http->data_remaining = 0; | |
633 | } | |
634 | else | |
635 | { | |
636 | http->data_encoding = HTTP_ENCODE_LENGTH; | |
637 | ||
638 | /* | |
639 | * The following is a hack for HTTP servers that don't send a | |
640 | * content-length or transfer-encoding field... | |
641 | * | |
642 | * If there is no content-length then the connection must close | |
643 | * after the transfer is complete... | |
644 | */ | |
645 | ||
646 | if (http->fields[HTTP_FIELD_CONTENT_LENGTH][0] == '\0') | |
647 | http->data_remaining = 2147483647; | |
648 | else | |
649 | http->data_remaining = strtoll(http->fields[HTTP_FIELD_CONTENT_LENGTH], | |
650 | NULL, 10); | |
651 | ||
652 | DEBUG_printf(("httpGetLength2: content_length=" CUPS_LLFMT "\n", | |
653 | CUPS_LLCAST http->data_remaining)); | |
654 | } | |
655 | ||
656 | if (http->data_remaining <= INT_MAX) | |
657 | http->_data_remaining = (int)http->data_remaining; | |
658 | else | |
659 | http->_data_remaining = INT_MAX; | |
660 | ||
661 | return (http->data_remaining); | |
662 | } | |
663 | ||
664 | ||
665 | /* | |
666 | * 'httpGetStatus()' - Get the status of the last HTTP request. | |
667 | * | |
668 | * @since CUPS 1.2@ | |
669 | */ | |
670 | ||
671 | http_status_t /* O - HTTP status */ | |
672 | httpGetStatus(http_t *http) /* I - HTTP connection */ | |
673 | { | |
674 | return (http ? http->status : HTTP_ERROR); | |
675 | } | |
676 | ||
677 | ||
ef416fc2 | 678 | /* |
679 | * 'httpGetSubField()' - Get a sub-field value. | |
680 | * | |
681 | * @deprecated@ | |
682 | */ | |
683 | ||
684 | char * /* O - Value or NULL */ | |
ecdc0628 | 685 | httpGetSubField(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 686 | http_field_t field, /* I - Field index */ |
687 | const char *name, /* I - Name of sub-field */ | |
688 | char *value) /* O - Value string */ | |
689 | { | |
690 | return (httpGetSubField2(http, field, name, value, HTTP_MAX_VALUE)); | |
691 | } | |
692 | ||
693 | ||
694 | /* | |
695 | * 'httpGetSubField2()' - Get a sub-field value. | |
696 | * | |
697 | * @since CUPS 1.2@ | |
698 | */ | |
699 | ||
700 | char * /* O - Value or NULL */ | |
ecdc0628 | 701 | httpGetSubField2(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 702 | http_field_t field, /* I - Field index */ |
703 | const char *name, /* I - Name of sub-field */ | |
704 | char *value, /* O - Value string */ | |
705 | int valuelen) /* I - Size of value buffer */ | |
706 | { | |
707 | const char *fptr; /* Pointer into field */ | |
708 | char temp[HTTP_MAX_VALUE], /* Temporary buffer for name */ | |
709 | *ptr, /* Pointer into string buffer */ | |
710 | *end; /* End of value buffer */ | |
711 | ||
712 | DEBUG_printf(("httpGetSubField2(http=%p, field=%d, name=\"%s\", value=%p, valuelen=%d)\n", | |
713 | http, field, name, value, valuelen)); | |
714 | ||
715 | if (!http || !name || !value || valuelen < 2 || | |
ecdc0628 | 716 | field <= HTTP_FIELD_UNKNOWN || field >= HTTP_FIELD_MAX) |
ef416fc2 | 717 | return (NULL); |
718 | ||
719 | end = value + valuelen - 1; | |
720 | ||
721 | for (fptr = http->fields[field]; *fptr;) | |
722 | { | |
723 | /* | |
724 | * Skip leading whitespace... | |
725 | */ | |
726 | ||
727 | while (isspace(*fptr & 255)) | |
728 | fptr ++; | |
729 | ||
730 | if (*fptr == ',') | |
731 | { | |
732 | fptr ++; | |
733 | continue; | |
734 | } | |
735 | ||
736 | /* | |
737 | * Get the sub-field name... | |
738 | */ | |
739 | ||
740 | for (ptr = temp; | |
741 | *fptr && *fptr != '=' && !isspace(*fptr & 255) && | |
742 | ptr < (temp + sizeof(temp) - 1); | |
743 | *ptr++ = *fptr++); | |
744 | ||
745 | *ptr = '\0'; | |
746 | ||
747 | DEBUG_printf(("httpGetSubField: name=\"%s\"\n", temp)); | |
748 | ||
749 | /* | |
750 | * Skip trailing chars up to the '='... | |
751 | */ | |
752 | ||
753 | while (isspace(*fptr & 255)) | |
754 | fptr ++; | |
755 | ||
756 | if (!*fptr) | |
757 | break; | |
758 | ||
759 | if (*fptr != '=') | |
760 | continue; | |
761 | ||
762 | /* | |
763 | * Skip = and leading whitespace... | |
764 | */ | |
765 | ||
766 | fptr ++; | |
767 | ||
768 | while (isspace(*fptr & 255)) | |
769 | fptr ++; | |
770 | ||
771 | if (*fptr == '\"') | |
772 | { | |
773 | /* | |
774 | * Read quoted string... | |
775 | */ | |
776 | ||
777 | for (ptr = value, fptr ++; | |
778 | *fptr && *fptr != '\"' && ptr < end; | |
779 | *ptr++ = *fptr++); | |
780 | ||
781 | *ptr = '\0'; | |
782 | ||
783 | while (*fptr && *fptr != '\"') | |
784 | fptr ++; | |
785 | ||
786 | if (*fptr) | |
787 | fptr ++; | |
788 | } | |
789 | else | |
790 | { | |
791 | /* | |
792 | * Read unquoted string... | |
793 | */ | |
794 | ||
795 | for (ptr = value; | |
796 | *fptr && !isspace(*fptr & 255) && *fptr != ',' && ptr < end; | |
797 | *ptr++ = *fptr++); | |
798 | ||
799 | *ptr = '\0'; | |
800 | ||
801 | while (*fptr && !isspace(*fptr & 255) && *fptr != ',') | |
802 | fptr ++; | |
803 | } | |
804 | ||
805 | DEBUG_printf(("httpGetSubField: value=\"%s\"\n", value)); | |
806 | ||
807 | /* | |
808 | * See if this is the one... | |
809 | */ | |
810 | ||
811 | if (!strcmp(name, temp)) | |
812 | return (value); | |
813 | } | |
814 | ||
815 | value[0] = '\0'; | |
816 | ||
817 | return (NULL); | |
818 | } | |
819 | ||
820 | ||
ef416fc2 | 821 | /* |
822 | * 'httpGets()' - Get a line of text from a HTTP connection. | |
823 | */ | |
824 | ||
825 | char * /* O - Line or NULL */ | |
826 | httpGets(char *line, /* I - Line to read into */ | |
827 | int length, /* I - Max length of buffer */ | |
ecdc0628 | 828 | http_t *http) /* I - HTTP connection */ |
ef416fc2 | 829 | { |
830 | char *lineptr, /* Pointer into line */ | |
831 | *lineend, /* End of line */ | |
832 | *bufptr, /* Pointer into input buffer */ | |
833 | *bufend; /* Pointer to end of buffer */ | |
834 | int bytes, /* Number of bytes read */ | |
835 | eol; /* End-of-line? */ | |
836 | ||
837 | ||
838 | DEBUG_printf(("httpGets(line=%p, length=%d, http=%p)\n", line, length, http)); | |
839 | ||
840 | if (http == NULL || line == NULL) | |
841 | return (NULL); | |
842 | ||
843 | /* | |
844 | * Read a line from the buffer... | |
845 | */ | |
846 | ||
847 | lineptr = line; | |
848 | lineend = line + length - 1; | |
849 | eol = 0; | |
850 | ||
851 | while (lineptr < lineend) | |
852 | { | |
853 | /* | |
854 | * Pre-load the buffer as needed... | |
855 | */ | |
856 | ||
857 | #ifdef WIN32 | |
858 | WSASetLastError(0); | |
859 | #else | |
860 | errno = 0; | |
861 | #endif /* WIN32 */ | |
862 | ||
863 | while (http->used == 0) | |
864 | { | |
865 | /* | |
866 | * No newline; see if there is more data to be read... | |
867 | */ | |
868 | ||
869 | if (!http->blocking && !http_wait(http, 1000)) | |
870 | return (NULL); | |
871 | ||
872 | #ifdef HAVE_SSL | |
873 | if (http->tls) | |
874 | bytes = http_read_ssl(http, http->buffer + http->used, | |
875 | HTTP_MAX_BUFFER - http->used); | |
876 | else | |
877 | #endif /* HAVE_SSL */ | |
878 | bytes = recv(http->fd, http->buffer + http->used, | |
879 | HTTP_MAX_BUFFER - http->used, 0); | |
880 | ||
881 | DEBUG_printf(("httpGets: read %d bytes...\n", bytes)); | |
882 | ||
883 | if (bytes < 0) | |
884 | { | |
885 | /* | |
886 | * Nope, can't get a line this time... | |
887 | */ | |
888 | ||
889 | #ifdef WIN32 | |
890 | if (WSAGetLastError() != http->error) | |
891 | { | |
892 | http->error = WSAGetLastError(); | |
893 | continue; | |
894 | } | |
895 | ||
896 | DEBUG_printf(("httpGets: recv() error %d!\n", WSAGetLastError())); | |
897 | #else | |
898 | DEBUG_printf(("httpGets: recv() error %d!\n", errno)); | |
899 | ||
900 | if (errno == EINTR) | |
901 | continue; | |
902 | else if (errno != http->error) | |
903 | { | |
904 | http->error = errno; | |
905 | continue; | |
906 | } | |
907 | #endif /* WIN32 */ | |
908 | ||
909 | return (NULL); | |
910 | } | |
911 | else if (bytes == 0) | |
912 | { | |
913 | http->error = EPIPE; | |
914 | ||
915 | return (NULL); | |
916 | } | |
917 | ||
918 | /* | |
919 | * Yup, update the amount used... | |
920 | */ | |
921 | ||
922 | http->used += bytes; | |
923 | } | |
924 | ||
925 | /* | |
926 | * Now copy as much of the current line as possible... | |
927 | */ | |
928 | ||
929 | for (bufptr = http->buffer, bufend = http->buffer + http->used; | |
930 | lineptr < lineend && bufptr < bufend;) | |
931 | { | |
932 | if (*bufptr == 0x0a) | |
933 | { | |
934 | eol = 1; | |
935 | bufptr ++; | |
936 | break; | |
937 | } | |
938 | else if (*bufptr == 0x0d) | |
939 | bufptr ++; | |
940 | else | |
941 | *lineptr++ = *bufptr++; | |
942 | } | |
943 | ||
944 | http->used -= bufptr - http->buffer; | |
945 | if (http->used > 0) | |
946 | memmove(http->buffer, bufptr, http->used); | |
947 | ||
948 | if (eol) | |
949 | { | |
950 | /* | |
951 | * End of line... | |
952 | */ | |
953 | ||
954 | http->activity = time(NULL); | |
955 | ||
956 | *lineptr = '\0'; | |
957 | ||
958 | DEBUG_printf(("httpGets: Returning \"%s\"\n", line)); | |
959 | ||
960 | return (line); | |
961 | } | |
962 | } | |
963 | ||
964 | DEBUG_puts("httpGets: No new line available!"); | |
965 | ||
966 | return (NULL); | |
967 | } | |
968 | ||
969 | ||
970 | /* | |
971 | * 'httpHead()' - Send a HEAD request to the server. | |
972 | */ | |
973 | ||
974 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 975 | httpHead(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 976 | const char *uri) /* I - URI for head */ |
977 | { | |
978 | return (http_send(http, HTTP_HEAD, uri)); | |
979 | } | |
980 | ||
981 | ||
982 | /* | |
983 | * 'httpInitialize()' - Initialize the HTTP interface library and set the | |
984 | * default HTTP proxy (if any). | |
985 | */ | |
986 | ||
987 | void | |
988 | httpInitialize(void) | |
989 | { | |
990 | #ifdef HAVE_LIBSSL | |
991 | # ifndef WIN32 | |
992 | struct timeval curtime; /* Current time in microseconds */ | |
993 | # endif /* !WIN32 */ | |
994 | int i; /* Looping var */ | |
995 | unsigned char data[1024]; /* Seed data */ | |
996 | #endif /* HAVE_LIBSSL */ | |
997 | ||
998 | #ifdef WIN32 | |
999 | WSADATA winsockdata; /* WinSock data */ | |
1000 | static int initialized = 0; /* Has WinSock been initialized? */ | |
1001 | ||
1002 | ||
1003 | if (!initialized) | |
1004 | WSAStartup(MAKEWORD(1,1), &winsockdata); | |
fa73b229 | 1005 | #elif !defined(SO_NOSIGPIPE) |
ef416fc2 | 1006 | /* |
1007 | * Ignore SIGPIPE signals... | |
1008 | */ | |
1009 | ||
fa73b229 | 1010 | # ifdef HAVE_SIGSET |
1011 | sigset(SIGPIPE, SIG_IGN); | |
1012 | # elif defined(HAVE_SIGACTION) | |
1013 | struct sigaction action; /* POSIX sigaction data */ | |
1014 | ||
1015 | ||
ef416fc2 | 1016 | memset(&action, 0, sizeof(action)); |
1017 | action.sa_handler = SIG_IGN; | |
1018 | sigaction(SIGPIPE, &action, NULL); | |
fa73b229 | 1019 | # else |
ef416fc2 | 1020 | signal(SIGPIPE, SIG_IGN); |
fa73b229 | 1021 | # endif /* !SO_NOSIGPIPE */ |
ef416fc2 | 1022 | #endif /* WIN32 */ |
1023 | ||
1024 | #ifdef HAVE_GNUTLS | |
1025 | gnutls_global_init(); | |
1026 | #endif /* HAVE_GNUTLS */ | |
1027 | ||
1028 | #ifdef HAVE_LIBSSL | |
1029 | SSL_load_error_strings(); | |
1030 | SSL_library_init(); | |
1031 | ||
1032 | /* | |
1033 | * Using the current time is a dubious random seed, but on some systems | |
1034 | * it is the best we can do (on others, this seed isn't even used...) | |
1035 | */ | |
1036 | ||
1037 | #ifdef WIN32 | |
1038 | #else | |
1039 | gettimeofday(&curtime, NULL); | |
1040 | srand(curtime.tv_sec + curtime.tv_usec); | |
1041 | #endif /* WIN32 */ | |
1042 | ||
1043 | for (i = 0; i < sizeof(data); i ++) | |
1044 | data[i] = rand(); /* Yes, this is a poor source of random data... */ | |
1045 | ||
1046 | RAND_seed(&data, sizeof(data)); | |
1047 | #endif /* HAVE_LIBSSL */ | |
1048 | } | |
1049 | ||
1050 | ||
1051 | /* | |
1052 | * 'httpOptions()' - Send an OPTIONS request to the server. | |
1053 | */ | |
1054 | ||
1055 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 1056 | httpOptions(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1057 | const char *uri) /* I - URI for options */ |
1058 | { | |
1059 | return (http_send(http, HTTP_OPTIONS, uri)); | |
1060 | } | |
1061 | ||
1062 | ||
1063 | /* | |
1064 | * 'httpPost()' - Send a POST request to the server. | |
1065 | */ | |
1066 | ||
1067 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 1068 | httpPost(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1069 | const char *uri) /* I - URI for post */ |
1070 | { | |
1071 | return (http_send(http, HTTP_POST, uri)); | |
1072 | } | |
1073 | ||
1074 | ||
1075 | /* | |
1076 | * 'httpPrintf()' - Print a formatted string to a HTTP connection. | |
ecdc0628 | 1077 | * |
1078 | * @private@ | |
ef416fc2 | 1079 | */ |
1080 | ||
1081 | int /* O - Number of bytes written */ | |
ecdc0628 | 1082 | httpPrintf(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1083 | const char *format, /* I - printf-style format string */ |
1084 | ...) /* I - Additional args as needed */ | |
1085 | { | |
1086 | int bytes; /* Number of bytes to write */ | |
1087 | char buf[16384]; /* Buffer for formatted string */ | |
1088 | va_list ap; /* Variable argument pointer */ | |
1089 | ||
1090 | ||
1091 | DEBUG_printf(("httpPrintf(http=%p, format=\"%s\", ...)\n", http, format)); | |
1092 | ||
1093 | va_start(ap, format); | |
1094 | bytes = vsnprintf(buf, sizeof(buf), format, ap); | |
1095 | va_end(ap); | |
1096 | ||
1097 | DEBUG_printf(("httpPrintf: %s", buf)); | |
1098 | ||
1099 | if (http->wused) | |
1100 | { | |
1101 | DEBUG_puts(" flushing existing data..."); | |
1102 | ||
1103 | if (httpFlushWrite(http) < 0) | |
1104 | return (-1); | |
1105 | } | |
1106 | ||
1107 | return (http_write(http, buf, bytes)); | |
1108 | } | |
1109 | ||
1110 | ||
1111 | /* | |
1112 | * 'httpPut()' - Send a PUT request to the server. | |
1113 | */ | |
1114 | ||
1115 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 1116 | httpPut(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1117 | const char *uri) /* I - URI to put */ |
1118 | { | |
1119 | return (http_send(http, HTTP_PUT, uri)); | |
1120 | } | |
1121 | ||
1122 | ||
1123 | /* | |
1124 | * 'httpRead()' - Read data from a HTTP connection. | |
a4d04587 | 1125 | * |
1126 | * This function is deprecated. Use the httpRead2() function which can | |
1127 | * read more than 2GB of data. | |
1128 | * | |
1129 | * @deprecated@ | |
ef416fc2 | 1130 | */ |
1131 | ||
1132 | int /* O - Number of bytes read */ | |
ecdc0628 | 1133 | httpRead(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1134 | char *buffer, /* I - Buffer for data */ |
1135 | int length) /* I - Maximum number of bytes */ | |
1136 | { | |
a4d04587 | 1137 | return ((int)httpRead2(http, buffer, length)); |
1138 | } | |
1139 | ||
1140 | ||
1141 | /* | |
1142 | * 'httpRead2()' - Read data from a HTTP connection. | |
ecdc0628 | 1143 | * |
1144 | * @since CUPS 1.2@ | |
a4d04587 | 1145 | */ |
1146 | ||
1147 | ssize_t /* O - Number of bytes read */ | |
ecdc0628 | 1148 | httpRead2(http_t *http, /* I - HTTP connection */ |
a4d04587 | 1149 | char *buffer, /* I - Buffer for data */ |
1150 | size_t length) /* I - Maximum number of bytes */ | |
1151 | { | |
1152 | ssize_t bytes; /* Bytes read */ | |
ef416fc2 | 1153 | char len[32]; /* Length string */ |
1154 | ||
1155 | ||
1156 | DEBUG_printf(("httpRead(http=%p, buffer=%p, length=%d)\n", | |
1157 | http, buffer, length)); | |
1158 | ||
1159 | if (http == NULL || buffer == NULL) | |
1160 | return (-1); | |
1161 | ||
1162 | http->activity = time(NULL); | |
1163 | ||
1164 | if (length <= 0) | |
1165 | return (0); | |
1166 | ||
1167 | if (http->data_encoding == HTTP_ENCODE_CHUNKED && | |
1168 | http->data_remaining <= 0) | |
1169 | { | |
a4d04587 | 1170 | DEBUG_puts("httpRead2: Getting chunk length..."); |
ef416fc2 | 1171 | |
1172 | if (httpGets(len, sizeof(len), http) == NULL) | |
1173 | { | |
a4d04587 | 1174 | DEBUG_puts("httpRead2: Could not get length!"); |
ef416fc2 | 1175 | return (0); |
1176 | } | |
1177 | ||
1178 | http->data_remaining = strtoll(len, NULL, 16); | |
1179 | if (http->data_remaining < 0) | |
1180 | { | |
a4d04587 | 1181 | DEBUG_puts("httpRead2: Negative chunk length!"); |
ef416fc2 | 1182 | return (0); |
1183 | } | |
1184 | } | |
1185 | ||
a4d04587 | 1186 | DEBUG_printf(("httpRead2: data_remaining=" CUPS_LLFMT "\n", |
ef416fc2 | 1187 | CUPS_LLCAST http->data_remaining)); |
1188 | ||
1189 | if (http->data_remaining <= 0) | |
1190 | { | |
1191 | /* | |
1192 | * A zero-length chunk ends a transfer; unless we are reading POST | |
1193 | * data, go idle... | |
1194 | */ | |
1195 | ||
1196 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
1197 | httpGets(len, sizeof(len), http); | |
1198 | ||
1199 | if (http->state == HTTP_POST_RECV) | |
1200 | http->state ++; | |
1201 | else | |
1202 | http->state = HTTP_WAITING; | |
1203 | ||
1204 | /* | |
1205 | * Prevent future reads for this request... | |
1206 | */ | |
1207 | ||
1208 | http->data_encoding = HTTP_ENCODE_LENGTH; | |
1209 | ||
1210 | return (0); | |
1211 | } | |
1212 | else if (length > http->data_remaining) | |
1213 | length = http->data_remaining; | |
1214 | ||
1215 | if (http->used == 0 && length <= 256) | |
1216 | { | |
1217 | /* | |
1218 | * Buffer small reads for better performance... | |
1219 | */ | |
1220 | ||
1221 | if (!http->blocking && !httpWait(http, 1000)) | |
1222 | return (0); | |
1223 | ||
1224 | if (http->data_remaining > sizeof(http->buffer)) | |
1225 | bytes = sizeof(http->buffer); | |
1226 | else | |
1227 | bytes = http->data_remaining; | |
1228 | ||
1229 | #ifdef HAVE_SSL | |
1230 | if (http->tls) | |
1231 | bytes = http_read_ssl(http, http->buffer, bytes); | |
1232 | else | |
1233 | #endif /* HAVE_SSL */ | |
1234 | { | |
a4d04587 | 1235 | DEBUG_printf(("httpRead2: reading %d bytes from socket into buffer...\n", |
ef416fc2 | 1236 | bytes)); |
1237 | ||
1238 | bytes = recv(http->fd, http->buffer, bytes, 0); | |
1239 | ||
a4d04587 | 1240 | DEBUG_printf(("httpRead2: read %d bytes from socket into buffer...\n", |
ef416fc2 | 1241 | bytes)); |
1242 | } | |
1243 | ||
1244 | if (bytes > 0) | |
1245 | http->used = bytes; | |
1246 | else if (bytes < 0) | |
1247 | { | |
1248 | #ifdef WIN32 | |
1249 | http->error = WSAGetLastError(); | |
1250 | return (-1); | |
1251 | #else | |
1252 | if (errno != EINTR) | |
1253 | { | |
1254 | http->error = errno; | |
1255 | return (-1); | |
1256 | } | |
1257 | #endif /* WIN32 */ | |
1258 | } | |
1259 | else | |
1260 | { | |
1261 | http->error = EPIPE; | |
1262 | return (0); | |
1263 | } | |
1264 | } | |
1265 | ||
1266 | if (http->used > 0) | |
1267 | { | |
1268 | if (length > http->used) | |
1269 | length = http->used; | |
1270 | ||
1271 | bytes = length; | |
1272 | ||
a4d04587 | 1273 | DEBUG_printf(("httpRead2: grabbing %d bytes from input buffer...\n", bytes)); |
ef416fc2 | 1274 | |
1275 | memcpy(buffer, http->buffer, length); | |
1276 | http->used -= length; | |
1277 | ||
1278 | if (http->used > 0) | |
1279 | memmove(http->buffer, http->buffer + length, http->used); | |
1280 | } | |
1281 | #ifdef HAVE_SSL | |
1282 | else if (http->tls) | |
1283 | { | |
1284 | if (!http->blocking && !httpWait(http, 1000)) | |
1285 | return (0); | |
1286 | ||
1287 | bytes = http_read_ssl(http, buffer, length); | |
1288 | } | |
1289 | #endif /* HAVE_SSL */ | |
1290 | else | |
1291 | { | |
1292 | if (!http->blocking && !httpWait(http, 1000)) | |
1293 | return (0); | |
1294 | ||
a4d04587 | 1295 | DEBUG_printf(("httpRead2: reading %d bytes from socket...\n", length)); |
ef416fc2 | 1296 | |
1297 | while ((bytes = recv(http->fd, buffer, length, 0)) < 0) | |
1298 | if (errno != EINTR) | |
1299 | break; | |
1300 | ||
a4d04587 | 1301 | DEBUG_printf(("httpRead2: read %d bytes from socket...\n", bytes)); |
ef416fc2 | 1302 | } |
1303 | ||
1304 | if (bytes > 0) | |
1305 | { | |
1306 | http->data_remaining -= bytes; | |
1307 | ||
1308 | if (http->data_remaining <= INT_MAX) | |
1309 | http->_data_remaining = (int)http->data_remaining; | |
1310 | else | |
1311 | http->_data_remaining = INT_MAX; | |
1312 | } | |
1313 | else if (bytes < 0) | |
1314 | { | |
1315 | #ifdef WIN32 | |
1316 | http->error = WSAGetLastError(); | |
1317 | #else | |
1318 | if (errno == EINTR) | |
1319 | bytes = 0; | |
1320 | else | |
1321 | http->error = errno; | |
1322 | #endif /* WIN32 */ | |
1323 | } | |
1324 | else | |
1325 | { | |
1326 | http->error = EPIPE; | |
1327 | return (0); | |
1328 | } | |
1329 | ||
1330 | if (http->data_remaining == 0) | |
1331 | { | |
1332 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
1333 | httpGets(len, sizeof(len), http); | |
1334 | ||
1335 | if (http->data_encoding != HTTP_ENCODE_CHUNKED) | |
1336 | { | |
1337 | if (http->state == HTTP_POST_RECV) | |
1338 | http->state ++; | |
1339 | else | |
1340 | http->state = HTTP_WAITING; | |
1341 | } | |
1342 | } | |
1343 | ||
1344 | #ifdef DEBUG | |
1345 | { | |
1346 | int i, j, ch; | |
a4d04587 | 1347 | printf("httpRead2: Read %d bytes:\n", bytes); |
ef416fc2 | 1348 | for (i = 0; i < bytes; i += 16) |
1349 | { | |
1350 | printf(" "); | |
1351 | ||
1352 | for (j = 0; j < 16 && (i + j) < bytes; j ++) | |
1353 | printf(" %02X", buffer[i + j] & 255); | |
1354 | ||
1355 | while (j < 16) | |
1356 | { | |
1357 | printf(" "); | |
1358 | j ++; | |
1359 | } | |
1360 | ||
1361 | printf(" "); | |
1362 | for (j = 0; j < 16 && (i + j) < bytes; j ++) | |
1363 | { | |
1364 | ch = buffer[i + j] & 255; | |
1365 | ||
fa73b229 | 1366 | if (ch < ' ' || ch >= 127) |
ef416fc2 | 1367 | ch = '.'; |
1368 | ||
1369 | putchar(ch); | |
1370 | } | |
1371 | putchar('\n'); | |
1372 | } | |
1373 | } | |
1374 | #endif /* DEBUG */ | |
1375 | ||
1376 | return (bytes); | |
1377 | } | |
1378 | ||
1379 | ||
1380 | #if defined(HAVE_SSL) && defined(HAVE_CDSASSL) | |
1381 | /* | |
1382 | * '_httpReadCDSA()' - Read function for CDSA decryption code. | |
1383 | */ | |
1384 | ||
1385 | OSStatus /* O - -1 on error, 0 on success */ | |
1386 | _httpReadCDSA( | |
1387 | SSLConnectionRef connection, /* I - SSL/TLS connection */ | |
1388 | void *data, /* I - Data buffer */ | |
1389 | size_t *dataLength) /* IO - Number of bytes */ | |
1390 | { | |
fa73b229 | 1391 | OSStatus result; /* Return value */ |
ef416fc2 | 1392 | ssize_t bytes; /* Number of bytes read */ |
1393 | ||
b423cd4c | 1394 | do |
fa73b229 | 1395 | bytes = recv((int)connection, data, *dataLength, 0); |
b423cd4c | 1396 | while (bytes == -1 && errno == EINTR); |
fa73b229 | 1397 | |
b423cd4c | 1398 | if (bytes == *dataLength) |
1399 | result = 0; | |
1400 | else if (bytes > 0) | |
1401 | { | |
1402 | *dataLength = bytes; | |
1403 | result = errSSLWouldBlock; | |
1404 | } | |
1405 | else | |
1406 | { | |
1407 | *dataLength = 0; | |
fa73b229 | 1408 | |
1409 | if (bytes == 0) | |
b423cd4c | 1410 | result = errSSLClosedAbort; |
1411 | else if (errno == EAGAIN) | |
1412 | result = errSSLWouldBlock; | |
1413 | else if (errno == EPIPE) | |
1414 | result = errSSLClosedAbort; | |
1415 | else | |
1416 | result = errSSLInternal; | |
ef416fc2 | 1417 | } |
b423cd4c | 1418 | |
1419 | return result; | |
ef416fc2 | 1420 | } |
1421 | #endif /* HAVE_SSL && HAVE_CDSASSL */ | |
1422 | ||
1423 | ||
1424 | /* | |
ecdc0628 | 1425 | * 'httpReconnect()' - Reconnect to a HTTP server. |
ef416fc2 | 1426 | */ |
1427 | ||
1428 | int /* O - 0 on success, non-zero on failure */ | |
ecdc0628 | 1429 | httpReconnect(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 1430 | { |
1431 | http_addrlist_t *addr; /* Connected address */ | |
1432 | ||
1433 | ||
1434 | DEBUG_printf(("httpReconnect(http=%p)\n", http)); | |
1435 | ||
1436 | if (!http) | |
1437 | return (-1); | |
1438 | ||
1439 | #ifdef HAVE_SSL | |
1440 | if (http->tls) | |
1441 | http_shutdown_ssl(http); | |
1442 | #endif /* HAVE_SSL */ | |
1443 | ||
1444 | /* | |
1445 | * Close any previously open socket... | |
1446 | */ | |
1447 | ||
1448 | if (http->fd >= 0) | |
bd7854cb | 1449 | { |
ef416fc2 | 1450 | #ifdef WIN32 |
1451 | closesocket(http->fd); | |
1452 | #else | |
1453 | close(http->fd); | |
1454 | #endif /* WIN32 */ | |
1455 | ||
bd7854cb | 1456 | http->fd = -1; |
1457 | } | |
1458 | ||
ef416fc2 | 1459 | /* |
1460 | * Connect to the server... | |
1461 | */ | |
1462 | ||
1463 | if ((addr = httpAddrConnect(http->addrlist, &(http->fd))) == NULL) | |
1464 | { | |
1465 | /* | |
1466 | * Unable to connect... | |
1467 | */ | |
1468 | ||
1469 | #ifdef WIN32 | |
1470 | http->error = WSAGetLastError(); | |
1471 | #else | |
1472 | http->error = errno; | |
1473 | #endif /* WIN32 */ | |
1474 | http->status = HTTP_ERROR; | |
1475 | ||
1476 | return (-1); | |
1477 | } | |
1478 | ||
1479 | http->hostaddr = &(addr->addr); | |
1480 | http->error = 0; | |
1481 | http->status = HTTP_CONTINUE; | |
1482 | ||
1483 | #ifdef HAVE_SSL | |
1484 | if (http->encryption == HTTP_ENCRYPT_ALWAYS) | |
1485 | { | |
1486 | /* | |
1487 | * Always do encryption via SSL. | |
1488 | */ | |
1489 | ||
1490 | if (http_setup_ssl(http) != 0) | |
1491 | { | |
1492 | #ifdef WIN32 | |
1493 | closesocket(http->fd); | |
1494 | #else | |
1495 | close(http->fd); | |
1496 | #endif /* WIN32 */ | |
1497 | ||
1498 | return (-1); | |
1499 | } | |
1500 | } | |
1501 | else if (http->encryption == HTTP_ENCRYPT_REQUIRED) | |
1502 | return (http_upgrade(http)); | |
1503 | #endif /* HAVE_SSL */ | |
1504 | ||
1505 | return (0); | |
1506 | } | |
1507 | ||
1508 | ||
1509 | /* | |
1510 | * 'httpSetCookie()' - Set the cookie value(s)... | |
1511 | * | |
1512 | * @since CUPS 1.1.19@ | |
1513 | */ | |
1514 | ||
1515 | void | |
1516 | httpSetCookie(http_t *http, /* I - Connection */ | |
1517 | const char *cookie) /* I - Cookie string */ | |
1518 | { | |
1519 | if (!http) | |
1520 | return; | |
1521 | ||
1522 | if (http->cookie) | |
1523 | free(http->cookie); | |
1524 | ||
1525 | if (cookie) | |
1526 | http->cookie = strdup(cookie); | |
1527 | else | |
1528 | http->cookie = NULL; | |
1529 | } | |
1530 | ||
1531 | ||
b423cd4c | 1532 | /* |
1533 | * 'httpSetExpect()' - Set the Expect: header in a request. | |
1534 | * | |
1535 | * Currently only HTTP_CONTINUE is supported for the "expect" argument. | |
1536 | * | |
1537 | * @since CUPS 1.2@ | |
1538 | */ | |
1539 | ||
1540 | void | |
1541 | httpSetExpect(http_t *http, /* I - HTTP connection */ | |
1542 | http_status_t expect) /* I - HTTP status to expect (HTTP_CONTINUE) */ | |
1543 | { | |
1544 | if (http) | |
1545 | http->expect = expect; | |
1546 | } | |
1547 | ||
1548 | ||
ef416fc2 | 1549 | /* |
1550 | * 'httpSetField()' - Set the value of an HTTP header. | |
1551 | */ | |
1552 | ||
1553 | void | |
ecdc0628 | 1554 | httpSetField(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1555 | http_field_t field, /* I - Field index */ |
1556 | const char *value) /* I - Value */ | |
1557 | { | |
1558 | if (http == NULL || | |
1559 | field < HTTP_FIELD_ACCEPT_LANGUAGE || | |
1560 | field > HTTP_FIELD_WWW_AUTHENTICATE || | |
1561 | value == NULL) | |
1562 | return; | |
1563 | ||
1564 | strlcpy(http->fields[field], value, HTTP_MAX_VALUE); | |
1565 | } | |
1566 | ||
1567 | ||
1568 | /* | |
1569 | * 'httpSetLength()' - Set the content-length and content-encoding. | |
1570 | * | |
1571 | * @since CUPS 1.2@ | |
1572 | */ | |
1573 | ||
1574 | void | |
ecdc0628 | 1575 | httpSetLength(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1576 | size_t length) /* I - Length (0 for chunked) */ |
1577 | { | |
1578 | if (!http) | |
1579 | return; | |
1580 | ||
1581 | if (!length) | |
1582 | { | |
1583 | strcpy(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked"); | |
1584 | http->fields[HTTP_FIELD_CONTENT_LENGTH][0] = '\0'; | |
1585 | } | |
1586 | else | |
1587 | { | |
1588 | http->fields[HTTP_FIELD_TRANSFER_ENCODING][0] = '\0'; | |
1589 | snprintf(http->fields[HTTP_FIELD_CONTENT_LENGTH], HTTP_MAX_VALUE, | |
1590 | CUPS_LLFMT, CUPS_LLCAST length); | |
1591 | } | |
1592 | } | |
1593 | ||
1594 | ||
1595 | /* | |
1596 | * 'httpTrace()' - Send an TRACE request to the server. | |
1597 | */ | |
1598 | ||
1599 | int /* O - Status of call (0 = success) */ | |
ecdc0628 | 1600 | httpTrace(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1601 | const char *uri) /* I - URI for trace */ |
1602 | { | |
1603 | return (http_send(http, HTTP_TRACE, uri)); | |
1604 | } | |
1605 | ||
1606 | ||
1607 | /* | |
1608 | * 'httpUpdate()' - Update the current HTTP state for incoming data. | |
1609 | */ | |
1610 | ||
1611 | http_status_t /* O - HTTP status */ | |
ecdc0628 | 1612 | httpUpdate(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 1613 | { |
1614 | char line[32768], /* Line from connection... */ | |
1615 | *value; /* Pointer to value on line */ | |
1616 | http_field_t field; /* Field index */ | |
1617 | int major, minor, /* HTTP version numbers */ | |
1618 | status; /* Request status */ | |
1619 | ||
1620 | ||
1621 | DEBUG_printf(("httpUpdate(http=%p), state=%d\n", http, http->state)); | |
1622 | ||
1623 | /* | |
1624 | * Flush pending data, if any... | |
1625 | */ | |
1626 | ||
1627 | if (http->wused) | |
1628 | { | |
1629 | DEBUG_puts(" flushing buffer..."); | |
1630 | ||
1631 | if (httpFlushWrite(http) < 0) | |
1632 | return (HTTP_ERROR); | |
1633 | } | |
1634 | ||
1635 | /* | |
1636 | * If we haven't issued any commands, then there is nothing to "update"... | |
1637 | */ | |
1638 | ||
1639 | if (http->state == HTTP_WAITING) | |
1640 | return (HTTP_CONTINUE); | |
1641 | ||
1642 | /* | |
1643 | * Grab all of the lines we can from the connection... | |
1644 | */ | |
1645 | ||
1646 | while (httpGets(line, sizeof(line), http) != NULL) | |
1647 | { | |
1648 | DEBUG_printf(("httpUpdate: Got \"%s\"\n", line)); | |
1649 | ||
1650 | if (line[0] == '\0') | |
1651 | { | |
1652 | /* | |
1653 | * Blank line means the start of the data section (if any). Return | |
1654 | * the result code, too... | |
1655 | * | |
1656 | * If we get status 100 (HTTP_CONTINUE), then we *don't* change states. | |
1657 | * Instead, we just return HTTP_CONTINUE to the caller and keep on | |
1658 | * tryin'... | |
1659 | */ | |
1660 | ||
1661 | if (http->status == HTTP_CONTINUE) | |
1662 | return (http->status); | |
1663 | ||
1664 | if (http->status < HTTP_BAD_REQUEST) | |
1665 | http->digest_tries = 0; | |
1666 | ||
1667 | #ifdef HAVE_SSL | |
1668 | if (http->status == HTTP_SWITCHING_PROTOCOLS && !http->tls) | |
1669 | { | |
1670 | if (http_setup_ssl(http) != 0) | |
1671 | { | |
1672 | # ifdef WIN32 | |
1673 | closesocket(http->fd); | |
1674 | # else | |
1675 | close(http->fd); | |
1676 | # endif /* WIN32 */ | |
1677 | ||
1678 | return (HTTP_ERROR); | |
1679 | } | |
1680 | ||
1681 | return (HTTP_CONTINUE); | |
1682 | } | |
1683 | #endif /* HAVE_SSL */ | |
1684 | ||
1685 | httpGetLength2(http); | |
1686 | ||
1687 | switch (http->state) | |
1688 | { | |
1689 | case HTTP_GET : | |
1690 | case HTTP_POST : | |
1691 | case HTTP_POST_RECV : | |
1692 | case HTTP_PUT : | |
1693 | http->state ++; | |
1694 | case HTTP_POST_SEND : | |
1695 | break; | |
1696 | ||
1697 | default : | |
1698 | http->state = HTTP_WAITING; | |
1699 | break; | |
1700 | } | |
1701 | ||
1702 | return (http->status); | |
1703 | } | |
1704 | else if (strncmp(line, "HTTP/", 5) == 0) | |
1705 | { | |
1706 | /* | |
1707 | * Got the beginning of a response... | |
1708 | */ | |
1709 | ||
1710 | if (sscanf(line, "HTTP/%d.%d%d", &major, &minor, &status) != 3) | |
1711 | return (HTTP_ERROR); | |
1712 | ||
1713 | http->version = (http_version_t)(major * 100 + minor); | |
1714 | http->status = (http_status_t)status; | |
1715 | } | |
1716 | else if ((value = strchr(line, ':')) != NULL) | |
1717 | { | |
1718 | /* | |
1719 | * Got a value... | |
1720 | */ | |
1721 | ||
1722 | *value++ = '\0'; | |
1723 | while (isspace(*value & 255)) | |
1724 | value ++; | |
1725 | ||
1726 | /* | |
1727 | * Be tolerants of servers that send unknown attribute fields... | |
1728 | */ | |
1729 | ||
1730 | if (!strcasecmp(line, "expect")) | |
1731 | { | |
1732 | /* | |
1733 | * "Expect: 100-continue" or similar... | |
1734 | */ | |
1735 | ||
1736 | http->expect = (http_status_t)atoi(value); | |
1737 | } | |
1738 | else if (!strcasecmp(line, "cookie")) | |
1739 | { | |
1740 | /* | |
1741 | * "Cookie: name=value[; name=value ...]" - replaces previous cookies... | |
1742 | */ | |
1743 | ||
1744 | httpSetCookie(http, value); | |
1745 | } | |
1746 | else if ((field = http_field(line)) == HTTP_FIELD_UNKNOWN) | |
1747 | { | |
1748 | DEBUG_printf(("httpUpdate: unknown field %s seen!\n", line)); | |
1749 | continue; | |
1750 | } | |
1751 | else | |
1752 | httpSetField(http, field, value); | |
1753 | } | |
1754 | else | |
1755 | { | |
1756 | http->status = HTTP_ERROR; | |
1757 | return (HTTP_ERROR); | |
1758 | } | |
1759 | } | |
1760 | ||
1761 | /* | |
1762 | * See if there was an error... | |
1763 | */ | |
1764 | ||
1765 | if (http->error == EPIPE && http->status > HTTP_CONTINUE) | |
1766 | return (http->status); | |
1767 | ||
1768 | if (http->error) | |
1769 | { | |
1770 | DEBUG_printf(("httpUpdate: socket error %d - %s\n", http->error, | |
1771 | strerror(http->error))); | |
1772 | http->status = HTTP_ERROR; | |
1773 | return (HTTP_ERROR); | |
1774 | } | |
1775 | ||
1776 | /* | |
1777 | * If we haven't already returned, then there is nothing new... | |
1778 | */ | |
1779 | ||
1780 | return (HTTP_CONTINUE); | |
1781 | } | |
1782 | ||
1783 | ||
1784 | /* | |
1785 | * 'httpWait()' - Wait for data available on a connection. | |
1786 | * | |
1787 | * @since CUPS 1.1.19@ | |
1788 | */ | |
1789 | ||
1790 | int /* O - 1 if data is available, 0 otherwise */ | |
ecdc0628 | 1791 | httpWait(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1792 | int msec) /* I - Milliseconds to wait */ |
1793 | { | |
1794 | /* | |
1795 | * First see if there is data in the buffer... | |
1796 | */ | |
1797 | ||
1798 | if (http == NULL) | |
1799 | return (0); | |
1800 | ||
1801 | if (http->used) | |
1802 | return (1); | |
1803 | ||
1804 | /* | |
1805 | * If not, check the SSL/TLS buffers and do a select() on the connection... | |
1806 | */ | |
1807 | ||
1808 | return (http_wait(http, msec)); | |
1809 | } | |
1810 | ||
1811 | ||
1812 | /* | |
1813 | * 'httpWrite()' - Write data to a HTTP connection. | |
a4d04587 | 1814 | * |
1815 | * This function is deprecated. Use the httpWrite2() function which can | |
1816 | * write more than 2GB of data. | |
1817 | * | |
1818 | * @deprecated@ | |
ef416fc2 | 1819 | */ |
1820 | ||
1821 | int /* O - Number of bytes written */ | |
ecdc0628 | 1822 | httpWrite(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 1823 | const char *buffer, /* I - Buffer for data */ |
1824 | int length) /* I - Number of bytes to write */ | |
1825 | { | |
a4d04587 | 1826 | return ((int)httpWrite2(http, buffer, length)); |
1827 | } | |
1828 | ||
1829 | ||
1830 | /* | |
1831 | * 'httpWrite2()' - Write data to a HTTP connection. | |
ecdc0628 | 1832 | * |
1833 | * @since CUPS 1.2@ | |
a4d04587 | 1834 | */ |
1835 | ||
1836 | ssize_t /* O - Number of bytes written */ | |
ecdc0628 | 1837 | httpWrite2(http_t *http, /* I - HTTP connection */ |
a4d04587 | 1838 | const char *buffer, /* I - Buffer for data */ |
1839 | size_t length) /* I - Number of bytes to write */ | |
1840 | { | |
1841 | ssize_t bytes; /* Bytes written */ | |
ef416fc2 | 1842 | |
1843 | ||
1844 | DEBUG_printf(("httpWrite(http=%p, buffer=%p, length=%d)\n", http, | |
1845 | buffer, length)); | |
1846 | ||
1847 | /* | |
1848 | * Range check input... | |
1849 | */ | |
1850 | ||
1851 | if (http == NULL || buffer == NULL) | |
1852 | return (-1); | |
1853 | ||
1854 | /* | |
1855 | * Mark activity on the connection... | |
1856 | */ | |
1857 | ||
1858 | http->activity = time(NULL); | |
1859 | ||
1860 | /* | |
1861 | * Buffer small writes for better performance... | |
1862 | */ | |
1863 | ||
1864 | if (length > 0) | |
1865 | { | |
1866 | if (http->wused && (length + http->wused) > sizeof(http->wbuffer)) | |
1867 | { | |
1868 | DEBUG_printf((" flushing buffer (wused=%d, length=%d)\n", | |
1869 | http->wused, length)); | |
1870 | ||
1871 | httpFlushWrite(http); | |
1872 | } | |
1873 | ||
1874 | if ((length + http->wused) <= sizeof(http->wbuffer)) | |
1875 | { | |
1876 | /* | |
1877 | * Write to buffer... | |
1878 | */ | |
1879 | ||
1880 | DEBUG_printf((" copying %d bytes to wbuffer...\n", length)); | |
1881 | ||
1882 | memcpy(http->wbuffer + http->wused, buffer, length); | |
1883 | http->wused += length; | |
1884 | bytes = length; | |
1885 | } | |
1886 | else | |
1887 | { | |
1888 | /* | |
1889 | * Otherwise write the data directly... | |
1890 | */ | |
1891 | ||
1892 | DEBUG_printf((" writing %d bytes to socket...\n", length)); | |
1893 | ||
1894 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
1895 | bytes = http_write_chunk(http, buffer, length); | |
1896 | else | |
1897 | bytes = http_write(http, buffer, length); | |
1898 | ||
1899 | DEBUG_printf((" wrote %d bytes...\n", bytes)); | |
1900 | } | |
1901 | ||
1902 | if (http->data_encoding == HTTP_ENCODE_LENGTH) | |
1903 | http->data_remaining -= bytes; | |
1904 | } | |
1905 | else | |
1906 | bytes = 0; | |
1907 | ||
1908 | /* | |
1909 | * Handle end-of-request processing... | |
1910 | */ | |
1911 | ||
1912 | if ((http->data_encoding == HTTP_ENCODE_CHUNKED && length == 0) || | |
1913 | (http->data_encoding == HTTP_ENCODE_LENGTH && http->data_remaining == 0)) | |
1914 | { | |
1915 | /* | |
1916 | * Finished with the transfer; unless we are sending POST or PUT | |
1917 | * data, go idle... | |
1918 | */ | |
1919 | ||
1920 | DEBUG_puts("httpWrite: changing states..."); | |
1921 | ||
1922 | if (http->wused) | |
1923 | httpFlushWrite(http); | |
1924 | ||
1925 | if (http->data_encoding == HTTP_ENCODE_CHUNKED) | |
1926 | { | |
1927 | /* | |
1928 | * Send a 0-length chunk at the end of the request... | |
1929 | */ | |
1930 | ||
1931 | http_write(http, "0\r\n\r\n", 5); | |
1932 | ||
1933 | /* | |
1934 | * Reset the data state... | |
1935 | */ | |
1936 | ||
1937 | http->data_encoding = HTTP_ENCODE_LENGTH; | |
1938 | http->data_remaining = 0; | |
1939 | } | |
1940 | ||
1941 | if (http->state == HTTP_POST_RECV) | |
1942 | http->state ++; | |
1943 | else if (http->state == HTTP_PUT_RECV) | |
1944 | http->state = HTTP_STATUS; | |
1945 | else | |
1946 | http->state = HTTP_WAITING; | |
1947 | } | |
1948 | ||
1949 | return (bytes); | |
1950 | } | |
1951 | ||
1952 | ||
1953 | #if defined(HAVE_SSL) && defined(HAVE_CDSASSL) | |
1954 | /* | |
1955 | * '_httpWriteCDSA()' - Write function for CDSA encryption code. | |
1956 | */ | |
1957 | ||
1958 | OSStatus /* O - -1 on error, 0 on success */ | |
1959 | _httpWriteCDSA( | |
1960 | SSLConnectionRef connection, /* I - SSL/TLS connection */ | |
1961 | const void *data, /* I - Data buffer */ | |
1962 | size_t *dataLength) /* IO - Number of bytes */ | |
1963 | { | |
fa73b229 | 1964 | OSStatus result; /* Return value */ |
1965 | ssize_t bytes; /* Number of bytes read */ | |
ef416fc2 | 1966 | |
b423cd4c | 1967 | do |
fa73b229 | 1968 | bytes = write((int)connection, data, *dataLength); |
b423cd4c | 1969 | while (bytes == -1 && errno == EINTR); |
fa73b229 | 1970 | |
b423cd4c | 1971 | if (bytes == *dataLength) |
1972 | result = 0; | |
1973 | else if (bytes >= 0) | |
1974 | { | |
1975 | *dataLength = bytes; | |
1976 | result = errSSLWouldBlock; | |
1977 | } | |
1978 | else | |
1979 | { | |
1980 | *dataLength = 0; | |
1981 | ||
fa73b229 | 1982 | if (errno == EAGAIN) |
b423cd4c | 1983 | result = errSSLWouldBlock; |
1984 | else if (errno == EPIPE) | |
1985 | result = errSSLClosedAbort; | |
1986 | else | |
1987 | result = errSSLInternal; | |
ef416fc2 | 1988 | } |
b423cd4c | 1989 | |
1990 | return result; | |
ef416fc2 | 1991 | } |
1992 | #endif /* HAVE_SSL && HAVE_CDSASSL */ | |
1993 | ||
1994 | ||
1995 | /* | |
1996 | * 'http_field()' - Return the field index for a field name. | |
1997 | */ | |
1998 | ||
1999 | static http_field_t /* O - Field index */ | |
2000 | http_field(const char *name) /* I - String name */ | |
2001 | { | |
2002 | int i; /* Looping var */ | |
2003 | ||
2004 | ||
2005 | for (i = 0; i < HTTP_FIELD_MAX; i ++) | |
2006 | if (strcasecmp(name, http_fields[i]) == 0) | |
2007 | return ((http_field_t)i); | |
2008 | ||
2009 | return (HTTP_FIELD_UNKNOWN); | |
2010 | } | |
2011 | ||
2012 | ||
2013 | #ifdef HAVE_SSL | |
2014 | /* | |
2015 | * 'http_read_ssl()' - Read from a SSL/TLS connection. | |
2016 | */ | |
2017 | ||
2018 | static int /* O - Bytes read */ | |
ecdc0628 | 2019 | http_read_ssl(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 2020 | char *buf, /* I - Buffer to store data */ |
2021 | int len) /* I - Length of buffer */ | |
2022 | { | |
2023 | # if defined(HAVE_LIBSSL) | |
2024 | return (SSL_read((SSL *)(http->tls), buf, len)); | |
2025 | ||
2026 | # elif defined(HAVE_GNUTLS) | |
2027 | return (gnutls_record_recv(((http_tls_t *)(http->tls))->session, buf, len)); | |
2028 | ||
2029 | # elif defined(HAVE_CDSASSL) | |
fa73b229 | 2030 | int result; /* Return value */ |
ef416fc2 | 2031 | OSStatus error; /* Error info */ |
2032 | size_t processed; /* Number of bytes processed */ | |
2033 | ||
2034 | ||
2035 | error = SSLRead((SSLContextRef)http->tls, buf, len, &processed); | |
2036 | ||
fa73b229 | 2037 | switch (error) |
ef416fc2 | 2038 | { |
fa73b229 | 2039 | case 0 : |
2040 | result = (int)processed; | |
2041 | break; | |
2042 | case errSSLClosedGraceful : | |
2043 | result = 0; | |
2044 | break; | |
2045 | case errSSLWouldBlock : | |
b423cd4c | 2046 | if (processed) |
2047 | result = (int)processed; | |
2048 | else | |
2049 | { | |
2050 | result = -1; | |
2051 | errno = EINTR; | |
2052 | } | |
fa73b229 | 2053 | break; |
2054 | default : | |
2055 | errno = EPIPE; | |
2056 | result = -1; | |
2057 | break; | |
ef416fc2 | 2058 | } |
fa73b229 | 2059 | |
2060 | return (result); | |
ef416fc2 | 2061 | # endif /* HAVE_LIBSSL */ |
2062 | } | |
2063 | #endif /* HAVE_SSL */ | |
2064 | ||
2065 | ||
2066 | /* | |
2067 | * 'http_send()' - Send a request with all fields and the trailing blank line. | |
2068 | */ | |
2069 | ||
2070 | static int /* O - 0 on success, non-zero on error */ | |
ecdc0628 | 2071 | http_send(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 2072 | http_state_t request, /* I - Request code */ |
2073 | const char *uri) /* I - URI */ | |
2074 | { | |
2075 | int i; /* Looping var */ | |
2076 | char *ptr, /* Pointer in buffer */ | |
2077 | buf[1024]; /* Encoded URI buffer */ | |
2078 | static const char * const codes[] = | |
2079 | { /* Request code strings */ | |
2080 | NULL, | |
2081 | "OPTIONS", | |
2082 | "GET", | |
2083 | NULL, | |
2084 | "HEAD", | |
2085 | "POST", | |
2086 | NULL, | |
2087 | NULL, | |
2088 | "PUT", | |
2089 | NULL, | |
2090 | "DELETE", | |
2091 | "TRACE", | |
2092 | "CLOSE" | |
2093 | }; | |
2094 | static const char hex[] = "0123456789ABCDEF"; | |
2095 | /* Hex digits */ | |
2096 | ||
2097 | ||
2098 | DEBUG_printf(("http_send(http=%p, request=HTTP_%s, uri=\"%s\")\n", | |
2099 | http, codes[request], uri)); | |
2100 | ||
2101 | if (http == NULL || uri == NULL) | |
2102 | return (-1); | |
2103 | ||
2104 | /* | |
2105 | * Set the User-Agent field if it isn't already... | |
2106 | */ | |
2107 | ||
2108 | if (!http->fields[HTTP_FIELD_USER_AGENT][0]) | |
2109 | httpSetField(http, HTTP_FIELD_USER_AGENT, CUPS_MINIMAL); | |
2110 | ||
2111 | /* | |
2112 | * Encode the URI as needed... | |
2113 | */ | |
2114 | ||
2115 | for (ptr = buf; *uri != '\0' && ptr < (buf + sizeof(buf) - 1); uri ++) | |
2116 | if (*uri <= ' ' || *uri >= 127) | |
2117 | { | |
2118 | if (ptr < (buf + sizeof(buf) - 1)) | |
2119 | *ptr ++ = '%'; | |
2120 | if (ptr < (buf + sizeof(buf) - 1)) | |
2121 | *ptr ++ = hex[(*uri >> 4) & 15]; | |
2122 | if (ptr < (buf + sizeof(buf) - 1)) | |
2123 | *ptr ++ = hex[*uri & 15]; | |
2124 | } | |
2125 | else | |
2126 | *ptr ++ = *uri; | |
2127 | ||
2128 | *ptr = '\0'; | |
2129 | ||
2130 | /* | |
2131 | * See if we had an error the last time around; if so, reconnect... | |
2132 | */ | |
2133 | ||
2134 | if (http->status == HTTP_ERROR || http->status >= HTTP_BAD_REQUEST) | |
fa73b229 | 2135 | if (httpReconnect(http)) |
2136 | return (-1); | |
ef416fc2 | 2137 | |
2138 | /* | |
2139 | * Send the request header... | |
2140 | */ | |
2141 | ||
2142 | http->state = request; | |
2143 | if (request == HTTP_POST || request == HTTP_PUT) | |
2144 | http->state ++; | |
2145 | ||
2146 | http->status = HTTP_CONTINUE; | |
2147 | ||
2148 | #ifdef HAVE_SSL | |
2149 | if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls) | |
2150 | { | |
2151 | httpSetField(http, HTTP_FIELD_CONNECTION, "Upgrade"); | |
2152 | httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.0,SSL/2.0,SSL/3.0"); | |
2153 | } | |
2154 | #endif /* HAVE_SSL */ | |
2155 | ||
2156 | if (httpPrintf(http, "%s %s HTTP/1.1\r\n", codes[request], buf) < 1) | |
2157 | { | |
2158 | http->status = HTTP_ERROR; | |
2159 | return (-1); | |
2160 | } | |
2161 | ||
2162 | for (i = 0; i < HTTP_FIELD_MAX; i ++) | |
2163 | if (http->fields[i][0] != '\0') | |
2164 | { | |
2165 | DEBUG_printf(("%s: %s\n", http_fields[i], http->fields[i])); | |
2166 | ||
2167 | if (httpPrintf(http, "%s: %s\r\n", http_fields[i], http->fields[i]) < 1) | |
2168 | { | |
2169 | http->status = HTTP_ERROR; | |
2170 | return (-1); | |
2171 | } | |
2172 | } | |
2173 | ||
2174 | if (http->cookie) | |
2175 | if (httpPrintf(http, "Cookie: $Version=0; %s\r\n", http->cookie) < 1) | |
2176 | { | |
2177 | http->status = HTTP_ERROR; | |
2178 | return (-1); | |
2179 | } | |
2180 | ||
b423cd4c | 2181 | if (http->expect == HTTP_CONTINUE && |
2182 | (http->state == HTTP_POST_RECV || http->state == HTTP_PUT_RECV)) | |
2183 | if (httpPrintf(http, "Expect: 100-continue\r\n") < 1) | |
2184 | { | |
2185 | http->status = HTTP_ERROR; | |
2186 | return (-1); | |
2187 | } | |
2188 | ||
ef416fc2 | 2189 | if (httpPrintf(http, "\r\n") < 1) |
2190 | { | |
2191 | http->status = HTTP_ERROR; | |
2192 | return (-1); | |
2193 | } | |
2194 | ||
2195 | httpGetLength2(http); | |
2196 | httpClearFields(http); | |
2197 | ||
2198 | return (0); | |
2199 | } | |
2200 | ||
2201 | ||
2202 | #ifdef HAVE_SSL | |
2203 | /* | |
2204 | * 'http_setup_ssl()' - Set up SSL/TLS support on a connection. | |
2205 | */ | |
2206 | ||
2207 | static int /* O - Status of connection */ | |
ecdc0628 | 2208 | http_setup_ssl(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 2209 | { |
2210 | # ifdef HAVE_LIBSSL | |
2211 | SSL_CTX *context; /* Context for encryption */ | |
2212 | SSL *conn; /* Connection for encryption */ | |
2213 | # elif defined(HAVE_GNUTLS) | |
2214 | http_tls_t *conn; /* TLS session object */ | |
2215 | gnutls_certificate_client_credentials *credentials; | |
2216 | /* TLS credentials */ | |
2217 | # elif defined(HAVE_CDSASSL) | |
2218 | SSLContextRef conn; /* Context for encryption */ | |
2219 | OSStatus error; /* Error info */ | |
2220 | # endif /* HAVE_LIBSSL */ | |
2221 | ||
2222 | ||
2223 | DEBUG_printf(("http_setup_ssl(http=%p)\n", http)); | |
2224 | ||
2225 | # ifdef HAVE_LIBSSL | |
2226 | context = SSL_CTX_new(SSLv23_client_method()); | |
2227 | ||
2228 | SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */ | |
2229 | ||
2230 | conn = SSL_new(context); | |
2231 | ||
2232 | SSL_set_fd(conn, http->fd); | |
2233 | if (SSL_connect(conn) != 1) | |
2234 | { | |
2235 | # ifdef DEBUG | |
2236 | unsigned long error; /* Error code */ | |
2237 | ||
2238 | while ((error = ERR_get_error()) != 0) | |
2239 | printf("http_setup_ssl: %s\n", ERR_error_string(error, NULL)); | |
2240 | # endif /* DEBUG */ | |
2241 | ||
2242 | SSL_CTX_free(context); | |
2243 | SSL_free(conn); | |
2244 | ||
2245 | # ifdef WIN32 | |
2246 | http->error = WSAGetLastError(); | |
2247 | # else | |
2248 | http->error = errno; | |
2249 | # endif /* WIN32 */ | |
2250 | http->status = HTTP_ERROR; | |
2251 | ||
2252 | return (HTTP_ERROR); | |
2253 | } | |
2254 | ||
2255 | # elif defined(HAVE_GNUTLS) | |
2256 | conn = (http_tls_t *)malloc(sizeof(http_tls_t)); | |
2257 | ||
2258 | if (conn == NULL) | |
2259 | { | |
2260 | http->error = errno; | |
2261 | http->status = HTTP_ERROR; | |
2262 | ||
2263 | return (-1); | |
2264 | } | |
2265 | ||
2266 | credentials = (gnutls_certificate_client_credentials *) | |
2267 | malloc(sizeof(gnutls_certificate_client_credentials)); | |
2268 | if (credentials == NULL) | |
2269 | { | |
2270 | free(conn); | |
2271 | ||
2272 | http->error = errno; | |
2273 | http->status = HTTP_ERROR; | |
2274 | ||
2275 | return (-1); | |
2276 | } | |
2277 | ||
2278 | gnutls_certificate_allocate_credentials(credentials); | |
2279 | ||
2280 | gnutls_init(&(conn->session), GNUTLS_CLIENT); | |
2281 | gnutls_set_default_priority(conn->session); | |
2282 | gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials); | |
4744bd90 | 2283 | gnutls_transport_set_ptr(conn->session, (gnutls_transport_ptr)http->fd); |
ef416fc2 | 2284 | |
2285 | if ((gnutls_handshake(conn->session)) != GNUTLS_E_SUCCESS) | |
2286 | { | |
2287 | http->error = errno; | |
2288 | http->status = HTTP_ERROR; | |
2289 | ||
2290 | return (-1); | |
2291 | } | |
2292 | ||
2293 | conn->credentials = credentials; | |
2294 | ||
2295 | # elif defined(HAVE_CDSASSL) | |
2296 | error = SSLNewContext(false, &conn); | |
2297 | ||
2298 | if (!error) | |
2299 | error = SSLSetIOFuncs(conn, _httpReadCDSA, _httpWriteCDSA); | |
2300 | ||
2301 | if (!error) | |
2302 | error = SSLSetConnection(conn, (SSLConnectionRef)http->fd); | |
2303 | ||
2304 | if (!error) | |
2305 | error = SSLSetAllowsExpiredCerts(conn, true); | |
2306 | ||
2307 | if (!error) | |
2308 | error = SSLSetAllowsAnyRoot(conn, true); | |
2309 | ||
2310 | if (!error) | |
b423cd4c | 2311 | { |
2312 | while ((error = SSLHandshake(conn)) == errSSLWouldBlock) | |
2313 | usleep(1000); | |
2314 | } | |
ef416fc2 | 2315 | |
2316 | if (error != 0) | |
2317 | { | |
2318 | http->error = error; | |
2319 | http->status = HTTP_ERROR; | |
2320 | ||
2321 | SSLDisposeContext(conn); | |
2322 | ||
2323 | close(http->fd); | |
2324 | ||
2325 | return (-1); | |
2326 | } | |
2327 | # endif /* HAVE_CDSASSL */ | |
2328 | ||
2329 | http->tls = conn; | |
2330 | return (0); | |
2331 | } | |
2332 | #endif /* HAVE_SSL */ | |
2333 | ||
2334 | ||
2335 | #ifdef HAVE_SSL | |
2336 | /* | |
2337 | * 'http_shutdown_ssl()' - Shut down SSL/TLS on a connection. | |
2338 | */ | |
2339 | ||
2340 | static void | |
ecdc0628 | 2341 | http_shutdown_ssl(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 2342 | { |
2343 | # ifdef HAVE_LIBSSL | |
2344 | SSL_CTX *context; /* Context for encryption */ | |
2345 | SSL *conn; /* Connection for encryption */ | |
2346 | ||
2347 | ||
2348 | conn = (SSL *)(http->tls); | |
2349 | context = SSL_get_SSL_CTX(conn); | |
2350 | ||
2351 | SSL_shutdown(conn); | |
2352 | SSL_CTX_free(context); | |
2353 | SSL_free(conn); | |
2354 | ||
2355 | # elif defined(HAVE_GNUTLS) | |
2356 | http_tls_t *conn; /* Encryption session */ | |
2357 | gnutls_certificate_client_credentials *credentials; | |
2358 | /* TLS credentials */ | |
2359 | ||
2360 | ||
2361 | conn = (http_tls_t *)(http->tls); | |
2362 | credentials = (gnutls_certificate_client_credentials *)(conn->credentials); | |
2363 | ||
2364 | gnutls_bye(conn->session, GNUTLS_SHUT_RDWR); | |
2365 | gnutls_deinit(conn->session); | |
2366 | gnutls_certificate_free_credentials(*credentials); | |
2367 | free(credentials); | |
2368 | free(conn); | |
2369 | ||
2370 | # elif defined(HAVE_CDSASSL) | |
b423cd4c | 2371 | while (SSLClose((SSLContextRef)http->tls) == errSSLWouldBlock) |
2372 | usleep(1000); | |
2373 | ||
ef416fc2 | 2374 | SSLDisposeContext((SSLContextRef)http->tls); |
2375 | # endif /* HAVE_LIBSSL */ | |
2376 | ||
2377 | http->tls = NULL; | |
2378 | } | |
2379 | #endif /* HAVE_SSL */ | |
2380 | ||
2381 | ||
2382 | #ifdef HAVE_SSL | |
2383 | /* | |
2384 | * 'http_upgrade()' - Force upgrade to TLS encryption. | |
2385 | */ | |
2386 | ||
2387 | static int /* O - Status of connection */ | |
ecdc0628 | 2388 | http_upgrade(http_t *http) /* I - HTTP connection */ |
ef416fc2 | 2389 | { |
2390 | int ret; /* Return value */ | |
2391 | http_t myhttp; /* Local copy of HTTP data */ | |
2392 | ||
2393 | ||
2394 | DEBUG_printf(("http_upgrade(%p)\n", http)); | |
2395 | ||
2396 | /* | |
2397 | * Copy the HTTP data to a local variable so we can do the OPTIONS | |
2398 | * request without interfering with the existing request data... | |
2399 | */ | |
2400 | ||
2401 | memcpy(&myhttp, http, sizeof(myhttp)); | |
2402 | ||
2403 | /* | |
2404 | * Send an OPTIONS request to the server, requiring SSL or TLS | |
2405 | * encryption on the link... | |
2406 | */ | |
2407 | ||
2408 | httpClearFields(&myhttp); | |
2409 | httpSetField(&myhttp, HTTP_FIELD_CONNECTION, "upgrade"); | |
2410 | httpSetField(&myhttp, HTTP_FIELD_UPGRADE, "TLS/1.0, SSL/2.0, SSL/3.0"); | |
2411 | ||
2412 | if ((ret = httpOptions(&myhttp, "*")) == 0) | |
2413 | { | |
2414 | /* | |
2415 | * Wait for the secure connection... | |
2416 | */ | |
2417 | ||
2418 | while (httpUpdate(&myhttp) == HTTP_CONTINUE); | |
2419 | } | |
2420 | ||
2421 | httpFlush(&myhttp); | |
2422 | ||
2423 | /* | |
2424 | * Copy the HTTP data back over, if any... | |
2425 | */ | |
2426 | ||
2427 | http->fd = myhttp.fd; | |
2428 | http->error = myhttp.error; | |
2429 | http->activity = myhttp.activity; | |
2430 | http->status = myhttp.status; | |
2431 | http->version = myhttp.version; | |
2432 | http->keep_alive = myhttp.keep_alive; | |
2433 | http->used = myhttp.used; | |
2434 | ||
2435 | if (http->used) | |
2436 | memcpy(http->buffer, myhttp.buffer, http->used); | |
2437 | ||
2438 | http->auth_type = myhttp.auth_type; | |
2439 | http->nonce_count = myhttp.nonce_count; | |
2440 | ||
2441 | memcpy(http->nonce, myhttp.nonce, sizeof(http->nonce)); | |
2442 | ||
2443 | http->tls = myhttp.tls; | |
2444 | http->encryption = myhttp.encryption; | |
2445 | ||
2446 | /* | |
2447 | * See if we actually went secure... | |
2448 | */ | |
2449 | ||
2450 | if (!http->tls) | |
2451 | { | |
2452 | /* | |
2453 | * Server does not support HTTP upgrade... | |
2454 | */ | |
2455 | ||
2456 | DEBUG_puts("Server does not support HTTP upgrade!"); | |
2457 | ||
2458 | # ifdef WIN32 | |
2459 | closesocket(http->fd); | |
2460 | # else | |
2461 | close(http->fd); | |
2462 | # endif | |
2463 | ||
2464 | http->fd = -1; | |
2465 | ||
2466 | return (-1); | |
2467 | } | |
2468 | else | |
2469 | return (ret); | |
2470 | } | |
2471 | #endif /* HAVE_SSL */ | |
2472 | ||
2473 | ||
2474 | /* | |
2475 | * 'http_wait()' - Wait for data available on a connection. | |
2476 | */ | |
2477 | ||
2478 | static int /* O - 1 if data is available, 0 otherwise */ | |
ecdc0628 | 2479 | http_wait(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 2480 | int msec) /* I - Milliseconds to wait */ |
2481 | { | |
2482 | #ifndef WIN32 | |
2483 | struct rlimit limit; /* Runtime limit */ | |
2484 | int set_size; /* Size of select set */ | |
2485 | #endif /* !WIN32 */ | |
2486 | struct timeval timeout; /* Timeout */ | |
2487 | int nfds; /* Result from select() */ | |
2488 | ||
2489 | ||
2490 | DEBUG_printf(("http_wait(http=%p, msec=%d)\n", http, msec)); | |
2491 | ||
fa73b229 | 2492 | if (http->fd < 0) |
2493 | return (0); | |
2494 | ||
ef416fc2 | 2495 | /* |
2496 | * Check the SSL/TLS buffers for data first... | |
2497 | */ | |
2498 | ||
2499 | #ifdef HAVE_SSL | |
2500 | if (http->tls) | |
2501 | { | |
2502 | # ifdef HAVE_LIBSSL | |
2503 | if (SSL_pending((SSL *)(http->tls))) | |
2504 | return (1); | |
2505 | # elif defined(HAVE_GNUTLS) | |
2506 | if (gnutls_record_check_pending(((http_tls_t *)(http->tls))->session)) | |
2507 | return (1); | |
2508 | # elif defined(HAVE_CDSASSL) | |
2509 | size_t bytes; /* Bytes that are available */ | |
2510 | ||
2511 | if (!SSLGetBufferedReadSize((SSLContextRef)http->tls, &bytes) && bytes > 0) | |
2512 | return (1); | |
2513 | # endif /* HAVE_LIBSSL */ | |
2514 | } | |
2515 | #endif /* HAVE_SSL */ | |
2516 | ||
2517 | /* | |
2518 | * Then try doing a select() to poll the socket... | |
2519 | */ | |
2520 | ||
2521 | if (!http->input_set) | |
2522 | { | |
2523 | #ifdef WIN32 | |
2524 | /* | |
2525 | * Windows has a fixed-size select() structure, different (surprise, | |
2526 | * surprise!) from all UNIX implementations. Just allocate this | |
2527 | * fixed structure... | |
2528 | */ | |
2529 | ||
2530 | http->input_set = calloc(1, sizeof(fd_set)); | |
2531 | #else | |
2532 | /* | |
2533 | * Allocate the select() input set based upon the max number of file | |
2534 | * descriptors available for this process... | |
2535 | */ | |
2536 | ||
2537 | getrlimit(RLIMIT_NOFILE, &limit); | |
2538 | ||
2539 | set_size = (limit.rlim_cur + 31) / 8 + 4; | |
2540 | if (set_size < sizeof(fd_set)) | |
2541 | set_size = sizeof(fd_set); | |
2542 | ||
2543 | http->input_set = calloc(1, set_size); | |
2544 | #endif /* WIN32 */ | |
2545 | ||
2546 | if (!http->input_set) | |
2547 | return (0); | |
2548 | } | |
2549 | ||
2550 | do | |
2551 | { | |
2552 | FD_SET(http->fd, http->input_set); | |
2553 | ||
2554 | if (msec >= 0) | |
2555 | { | |
2556 | timeout.tv_sec = msec / 1000; | |
2557 | timeout.tv_usec = (msec % 1000) * 1000; | |
2558 | ||
2559 | nfds = select(http->fd + 1, http->input_set, NULL, NULL, &timeout); | |
2560 | } | |
2561 | else | |
2562 | nfds = select(http->fd + 1, http->input_set, NULL, NULL, NULL); | |
2563 | } | |
2564 | #ifdef WIN32 | |
2565 | while (nfds < 0 && WSAGetLastError() == WSAEINTR); | |
2566 | #else | |
2567 | while (nfds < 0 && errno == EINTR); | |
2568 | #endif /* WIN32 */ | |
2569 | ||
2570 | FD_CLR(http->fd, http->input_set); | |
2571 | ||
2572 | return (nfds > 0); | |
2573 | } | |
2574 | ||
2575 | ||
2576 | /* | |
2577 | * 'http_write()' - Write a buffer to a HTTP connection. | |
2578 | */ | |
2579 | ||
2580 | static int /* O - Number of bytes written */ | |
ecdc0628 | 2581 | http_write(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 2582 | const char *buffer, /* I - Buffer for data */ |
2583 | int length) /* I - Number of bytes to write */ | |
2584 | { | |
2585 | int tbytes, /* Total bytes sent */ | |
2586 | bytes; /* Bytes sent */ | |
2587 | ||
2588 | ||
2589 | tbytes = 0; | |
2590 | ||
2591 | while (length > 0) | |
2592 | { | |
2593 | #ifdef HAVE_SSL | |
2594 | if (http->tls) | |
2595 | bytes = http_write_ssl(http, buffer, length); | |
2596 | else | |
2597 | #endif /* HAVE_SSL */ | |
2598 | bytes = send(http->fd, buffer, length, 0); | |
2599 | ||
2600 | if (bytes < 0) | |
2601 | { | |
2602 | #ifdef WIN32 | |
2603 | if (WSAGetLastError() != http->error) | |
2604 | { | |
2605 | http->error = WSAGetLastError(); | |
2606 | continue; | |
2607 | } | |
2608 | #else | |
2609 | if (errno == EINTR) | |
2610 | continue; | |
2611 | else if (errno != http->error && errno != ECONNRESET) | |
2612 | { | |
2613 | http->error = errno; | |
2614 | continue; | |
2615 | } | |
2616 | #endif /* WIN32 */ | |
2617 | ||
2618 | DEBUG_puts("http_write: error writing data...\n"); | |
2619 | ||
2620 | return (-1); | |
2621 | } | |
2622 | ||
2623 | buffer += bytes; | |
2624 | tbytes += bytes; | |
2625 | length -= bytes; | |
2626 | } | |
2627 | ||
2628 | #ifdef DEBUG | |
2629 | { | |
2630 | int i, j, ch; | |
2631 | printf("http_write: wrote %d bytes: \n", tbytes); | |
2632 | for (i = 0, buffer -= tbytes; i < tbytes; i += 16) | |
2633 | { | |
2634 | printf(" "); | |
2635 | ||
2636 | for (j = 0; j < 16 && (i + j) < tbytes; j ++) | |
2637 | printf(" %02X", buffer[i + j] & 255); | |
2638 | ||
2639 | while (j < 16) | |
2640 | { | |
2641 | printf(" "); | |
2642 | j ++; | |
2643 | } | |
2644 | ||
2645 | printf(" "); | |
2646 | for (j = 0; j < 16 && (i + j) < tbytes; j ++) | |
2647 | { | |
2648 | ch = buffer[i + j] & 255; | |
2649 | ||
2650 | if (ch < ' ' || ch == 127) | |
2651 | ch = '.'; | |
2652 | ||
2653 | putchar(ch); | |
2654 | } | |
2655 | putchar('\n'); | |
2656 | } | |
2657 | } | |
2658 | #endif /* DEBUG */ | |
2659 | ||
2660 | return (tbytes); | |
2661 | } | |
2662 | ||
2663 | ||
2664 | /* | |
2665 | * 'http_write_chunk()' - Write a chunked buffer. | |
2666 | */ | |
2667 | ||
2668 | static int /* O - Number bytes written */ | |
ecdc0628 | 2669 | http_write_chunk(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 2670 | const char *buffer, /* I - Buffer to write */ |
2671 | int length) /* I - Length of buffer */ | |
2672 | { | |
2673 | char header[255]; /* Chunk header */ | |
2674 | int bytes; /* Bytes written */ | |
2675 | ||
2676 | DEBUG_printf(("http_write_chunk(http=%p, buffer=%p, length=%d)\n", | |
2677 | http, buffer, length)); | |
2678 | ||
2679 | /* | |
2680 | * Write the chunk header, data, and trailer. | |
2681 | */ | |
2682 | ||
2683 | sprintf(header, "%x\r\n", length); | |
2684 | if (http_write(http, header, strlen(header)) < 0) | |
2685 | { | |
2686 | DEBUG_puts(" http_write of length failed!"); | |
2687 | return (-1); | |
2688 | } | |
2689 | ||
2690 | if ((bytes = http_write(http, buffer, length)) < 0) | |
2691 | { | |
2692 | DEBUG_puts(" http_write of buffer failed!"); | |
2693 | return (-1); | |
2694 | } | |
2695 | ||
2696 | if (http_write(http, "\r\n", 2) < 0) | |
2697 | { | |
2698 | DEBUG_puts(" http_write of CR LF failed!"); | |
2699 | return (-1); | |
2700 | } | |
2701 | ||
2702 | return (bytes); | |
2703 | } | |
2704 | ||
2705 | ||
2706 | #ifdef HAVE_SSL | |
2707 | /* | |
2708 | * 'http_write_ssl()' - Write to a SSL/TLS connection. | |
2709 | */ | |
2710 | ||
2711 | static int /* O - Bytes written */ | |
ecdc0628 | 2712 | http_write_ssl(http_t *http, /* I - HTTP connection */ |
ef416fc2 | 2713 | const char *buf, /* I - Buffer holding data */ |
2714 | int len) /* I - Length of buffer */ | |
2715 | { | |
2716 | # if defined(HAVE_LIBSSL) | |
2717 | return (SSL_write((SSL *)(http->tls), buf, len)); | |
2718 | ||
2719 | # elif defined(HAVE_GNUTLS) | |
2720 | return (gnutls_record_send(((http_tls_t *)(http->tls))->session, buf, len)); | |
2721 | # elif defined(HAVE_CDSASSL) | |
fa73b229 | 2722 | int result; /* Return value */ |
ef416fc2 | 2723 | OSStatus error; /* Error info */ |
2724 | size_t processed; /* Number of bytes processed */ | |
2725 | ||
2726 | ||
2727 | error = SSLWrite((SSLContextRef)http->tls, buf, len, &processed); | |
2728 | ||
fa73b229 | 2729 | switch (error) |
ef416fc2 | 2730 | { |
fa73b229 | 2731 | case 0 : |
2732 | result = (int)processed; | |
2733 | break; | |
2734 | case errSSLClosedGraceful : | |
2735 | result = 0; | |
2736 | break; | |
2737 | case errSSLWouldBlock : | |
b423cd4c | 2738 | if (processed) |
2739 | result = (int)processed; | |
2740 | else | |
2741 | { | |
2742 | result = -1; | |
2743 | errno = EINTR; | |
2744 | } | |
fa73b229 | 2745 | break; |
2746 | default : | |
2747 | errno = EPIPE; | |
2748 | result = -1; | |
2749 | break; | |
ef416fc2 | 2750 | } |
fa73b229 | 2751 | |
2752 | return (result); | |
ef416fc2 | 2753 | # endif /* HAVE_LIBSSL */ |
2754 | } | |
2755 | #endif /* HAVE_SSL */ | |
2756 | ||
2757 | ||
2758 | /* | |
757d2cad | 2759 | * End of "$Id: http.c 5226 2006-03-04 22:03:18Z mike $". |
ef416fc2 | 2760 | */ |