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Merge changes from CUPS 1.6svn-r10510.
[thirdparty/cups.git] / cups / http.c
CommitLineData
ef416fc2 1/*
b19ccc9e 2 * "$Id: http.c 7850 2008-08-20 00:07:25Z mike $"
ef416fc2 3 *
71e16022 4 * HTTP routines for CUPS.
ef416fc2 5 *
dcb445bc 6 * Copyright 2007-2012 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 *
a2326b5b
MS		 22 * httpAddCredential() - Allocates and adds a single credential to an
23 * array.
24 * _httpBIOMethods() - Get the OpenSSL BIO methods for HTTP
25 * connections.
26 * httpBlocking() - Set blocking/non-blocking behavior on a
27 * connection.
28 * httpCheck() - Check to see if there is a pending response
29 * from the server.
30 * httpClearCookie() - Clear the cookie value(s).
31 * httpClearFields() - Clear HTTP request fields.
32 * httpClose() - Close an HTTP connection.
33 * httpConnect() - Connect to a HTTP server.
34 * httpConnectEncrypt() - Connect to a HTTP server using encryption.
35 * httpCopyCredentials() - Copy the credentials associated with an
36 * encrypted connection.
37 * _httpCreate() - Create an unconnected HTTP connection.
38 * _httpCreateCredentials() - Create credentials in the internal format.
39 * httpDelete() - Send a DELETE request to the server.
40 * _httpDisconnect() - Disconnect a HTTP connection.
41 * httpEncryption() - Set the required encryption on the link.
42 * httpError() - Get the last error on a connection.
43 * httpFlush() - Flush data from a HTTP connection.
44 * httpFlushWrite() - Flush data in write buffer.
45 * _httpFreeCredentials() - Free internal credentials.
46 * httpFreeCredentials() - Free an array of credentials.
47 * httpGet() - Send a GET request to the server.
48 * httpGetAuthString() - Get the current authorization string.
49 * httpGetBlocking() - Get the blocking/non-block state of a
50 * connection.
51 * httpGetCookie() - Get any cookie data from the response.
52 * httpGetFd() - Get the file descriptor associated with a
53 * connection.
54 * httpGetField() - Get a field value from a request/response.
55 * httpGetLength() - Get the amount of data remaining from the
56 * content-length or transfer-encoding fields.
57 * httpGetLength2() - Get the amount of data remaining from the
58 * content-length or transfer-encoding fields.
59 * httpGets() - Get a line of text from a HTTP connection.
60 * httpGetState() - Get the current state of the HTTP request.
61 * httpGetStatus() - Get the status of the last HTTP request.
62 * httpGetSubField() - Get a sub-field value.
63 * httpGetSubField2() - Get a sub-field value.
64 * httpGetVersion() - Get the HTTP version at the other end.
65 * httpHead() - Send a HEAD request to the server.
66 * httpInitialize() - Initialize the HTTP interface library and set
67 * the default HTTP proxy (if any).
68 * httpOptions() - Send an OPTIONS request to the server.
69 * _httpPeek() - Peek at data from a HTTP connection.
70 * httpPost() - Send a POST request to the server.
71 * httpPrintf() - Print a formatted string to a HTTP connection.
72 * httpPut() - Send a PUT request to the server.
73 * httpRead() - Read data from a HTTP connection.
74 * httpRead2() - Read data from a HTTP connection.
75 * _httpReadCDSA() - Read function for the CDSA library.
76 * _httpReadGNUTLS() - Read function for the GNU TLS library.
77 * httpReconnect() - Reconnect to a HTTP server.
dcb445bc
MS		 78 * httpReconnect2() - Reconnect to a HTTP server with timeout and
79 * optional cancel.
a2326b5b
MS		 80 * httpSetAuthString() - Set the current authorization string.
81 * httpSetCredentials() - Set the credentials associated with an
82 * encrypted connection.
83 * httpSetCookie() - Set the cookie value(s).
84 * httpSetExpect() - Set the Expect: header in a request.
85 * httpSetField() - Set the value of an HTTP header.
86 * httpSetLength() - Set the content-length and content-encoding.
87 * httpSetTimeout() - Set read/write timeouts and an optional
88 * callback.
89 * httpTrace() - Send an TRACE request to the server.
90 * _httpUpdate() - Update the current HTTP status for incoming
91 * data.
92 * httpUpdate() - Update the current HTTP state for incoming
93 * data.
94 * _httpWait() - Wait for data available on a connection (no
95 * flush).
96 * httpWait() - Wait for data available on a connection.
97 * httpWrite() - Write data to a HTTP connection.
98 * httpWrite2() - Write data to a HTTP connection.
99 * _httpWriteCDSA() - Write function for the CDSA library.
100 * _httpWriteGNUTLS() - Write function for the GNU TLS library.
101 * http_bio_ctrl() - Control the HTTP connection.
102 * http_bio_free() - Free OpenSSL data.
103 * http_bio_new() - Initialize an OpenSSL BIO structure.
104 * http_bio_puts() - Send a string for OpenSSL.
105 * http_bio_read() - Read data for OpenSSL.
106 * http_bio_write() - Write data for OpenSSL.
107 * http_debug_hex() - Do a hex dump of a buffer.
108 * http_field() - Return the field index for a field name.
109 * http_read_ssl() - Read from a SSL/TLS connection.
110 * http_send() - Send a request with all fields and the trailing
111 * blank line.
112 * http_set_credentials() - Set the SSL/TLS credentials.
113 * http_set_timeout() - Set the socket timeout values.
114 * http_set_wait() - Set the default wait value for reads.
115 * http_setup_ssl() - Set up SSL/TLS support on a connection.
116 * http_shutdown_ssl() - Shut down SSL/TLS on a connection.
117 * http_upgrade() - Force upgrade to TLS encryption.
118 * http_write() - Write a buffer to a HTTP connection.
119 * http_write_chunk() - Write a chunked buffer.
120 * http_write_ssl() - Write to a SSL/TLS connection.
ef416fc2 121 */
122
123/*
124 * Include necessary headers...
125 */
126
71e16022 127#include "cups-private.h"
ef416fc2 128#include <fcntl.h>
83e08001 129#include <math.h>
cc754834
MS		 130#ifdef WIN32
131# include <tchar.h>
132#else
ef416fc2 133# include <signal.h>
134# include <sys/time.h>
135# include <sys/resource.h>
cc754834 136#endif /* WIN32 */
f7deaa1a 137#ifdef HAVE_POLL
dcb445bc 138# include <poll.h>
f7deaa1a 139#endif /* HAVE_POLL */
ef416fc2 140
141
ef416fc2 142/*
143 * Local functions...
144 */
145
ae71f5de
MS		 146#ifdef DEBUG
147static void http_debug_hex(const char *prefix, const char *buffer,
148 int bytes);
149#endif /* DEBUG */
ef416fc2 150static http_field_t http_field(const char *name);
151static int http_send(http_t *http, http_state_t request,
152 const char *uri);
ef416fc2 153static int http_write(http_t *http, const char *buffer,
154 int length);
155static int http_write_chunk(http_t *http, const char *buffer,
156 int length);
157#ifdef HAVE_SSL
158static int http_read_ssl(http_t *http, char *buf, int len);
82f97232 159# if defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
7cf5915e 160static int http_set_credentials(http_t *http);
82f97232 161# endif /* HAVE_CDSASSL ** HAVE_SECCERTIFICATECOPYDATA */
d7225fc2 162#endif /* HAVE_SSL */
85dda01c
MS		 163static void http_set_timeout(int fd, double timeout);
164static void http_set_wait(http_t *http);
d7225fc2 165#ifdef HAVE_SSL
ef416fc2 166static int http_setup_ssl(http_t *http);
167static void http_shutdown_ssl(http_t *http);
168static int http_upgrade(http_t *http);
169static int http_write_ssl(http_t *http, const char *buf, int len);
170#endif /* HAVE_SSL */
171
172
173/*
174 * Local globals...
175 */
176
177static const char * const http_fields[] =
178 {
179 "Accept-Language",
180 "Accept-Ranges",
181 "Authorization",
182 "Connection",
183 "Content-Encoding",
184 "Content-Language",
185 "Content-Length",
186 "Content-Location",
187 "Content-MD5",
188 "Content-Range",
189 "Content-Type",
190 "Content-Version",
191 "Date",
192 "Host",
193 "If-Modified-Since",
194 "If-Unmodified-since",
195 "Keep-Alive",
196 "Last-Modified",
197 "Link",
198 "Location",
199 "Range",
200 "Referer",
201 "Retry-After",
202 "Transfer-Encoding",
203 "Upgrade",
204 "User-Agent",
205 "WWW-Authenticate"
206 };
f11a948a
MS		 207#ifdef DEBUG
208static const char * const http_states[] =
209 {
210 "HTTP_WAITING",
211 "HTTP_OPTIONS",
212 "HTTP_GET",
213 "HTTP_GET_SEND",
214 "HTTP_HEAD",
215 "HTTP_POST",
216 "HTTP_POST_RECV",
217 "HTTP_POST_SEND",
218 "HTTP_PUT",
219 "HTTP_PUT_RECV",
220 "HTTP_DELETE",
221 "HTTP_TRACE",
222 "HTTP_CLOSE",
223 "HTTP_STATUS"
224 };
225#endif /* DEBUG */
ef416fc2 226
227
411affcf 228#if defined(HAVE_SSL) && defined(HAVE_LIBSSL)
229/*
230 * BIO methods for OpenSSL...
231 */
232
233static int http_bio_write(BIO *h, const char *buf, int num);
234static int http_bio_read(BIO *h, char *buf, int size);
235static int http_bio_puts(BIO *h, const char *str);
236static long http_bio_ctrl(BIO *h, int cmd, long arg1, void *arg2);
237static int http_bio_new(BIO *h);
238static int http_bio_free(BIO *data);
239
240static BIO_METHOD http_bio_methods =
241 {
242 BIO_TYPE_SOCKET,
243 "http",
244 http_bio_write,
245 http_bio_read,
246 http_bio_puts,
247 NULL, /* http_bio_gets, */
248 http_bio_ctrl,
249 http_bio_new,
250 http_bio_free,
251 NULL,
252 };
7cf5915e 253#endif /* HAVE_SSL && HAVE_LIBSSL */
411affcf 254
255
7cf5915e
MS		 256/*
257 * 'httpAddCredential()' - Allocates and adds a single credential to an array.
258 *
259 * Use @code cupsArrayNew(NULL, NULL)@ to create a credentials array.
260 *
f3c17241 261 * @since CUPS 1.5/OS X 10.7@
7cf5915e
MS		 262 */
263
264int /* O - 0 on success, -1 on error */
265httpAddCredential(
266 cups_array_t *credentials, /* I - Credentials array */
267 const void *data, /* I - PEM-encoded X.509 data */
268 size_t datalen) /* I - Length of data */
269{
270 http_credential_t *credential; /* Credential data */
271
272
273 if ((credential = malloc(sizeof(http_credential_t))) != NULL)
274 {
275 credential->datalen = datalen;
276
277 if ((credential->data = malloc(datalen)) != NULL)
278 {
279 memcpy(credential->data, data, datalen);
280 cupsArrayAdd(credentials, credential);
281 return (0);
282 }
283
284 free(credential);
285 }
286
287 return (-1);
288}
289
290
291#if defined(HAVE_SSL) && defined(HAVE_LIBSSL)
411affcf 292/*
293 * '_httpBIOMethods()' - Get the OpenSSL BIO methods for HTTP connections.
294 */
295
296BIO_METHOD * /* O - BIO methods for OpenSSL */
297_httpBIOMethods(void)
298{
299 return (&http_bio_methods);
300}
301#endif /* HAVE_SSL && HAVE_LIBSSL */
302
303
ecdc0628 304/*
305 * 'httpBlocking()' - Set blocking/non-blocking behavior on a connection.
306 */
307
308void
568fa3fa 309httpBlocking(http_t *http, /* I - Connection to server */
ecdc0628 310 int b) /* I - 1 = blocking, 0 = non-blocking */
311{
312 if (http)
85dda01c 313 {
ecdc0628 314 http->blocking = b;
85dda01c
MS		 315 http_set_wait(http);
316 }
ecdc0628 317}
318
319
ef416fc2 320/*
321 * 'httpCheck()' - Check to see if there is a pending response from the server.
322 */
323
ecdc0628 324int /* O - 0 = no data, 1 = data available */
568fa3fa 325httpCheck(http_t *http) /* I - Connection to server */
ef416fc2 326{
327 return (httpWait(http, 0));
328}
329
330
331/*
332 * 'httpClearCookie()' - Clear the cookie value(s).
333 *
f3c17241 334 * @since CUPS 1.1.19/OS X 10.3@
ef416fc2 335 */
336
337void
568fa3fa 338httpClearCookie(http_t *http) /* I - Connection to server */
ef416fc2 339{
340 if (!http)
341 return;
342
343 if (http->cookie)
344 {
345 free(http->cookie);
346 http->cookie = NULL;
347 }
348}
349
350
ecdc0628 351/*
352 * 'httpClearFields()' - Clear HTTP request fields.
353 */
354
355void
568fa3fa 356httpClearFields(http_t *http) /* I - Connection to server */
ecdc0628 357{
358 if (http)
359 {
360 memset(http->fields, 0, sizeof(http->fields));
07725fee 361 if (http->hostname[0] == '/')
362 httpSetField(http, HTTP_FIELD_HOST, "localhost");
363 else
364 httpSetField(http, HTTP_FIELD_HOST, http->hostname);
b423cd4c 365
f7deaa1a 366 if (http->field_authorization)
367 {
368 free(http->field_authorization);
369 http->field_authorization = NULL;
370 }
371
b423cd4c 372 http->expect = (http_status_t)0;
ecdc0628 373 }
374}
375
376
ef416fc2 377/*
6d2f911b 378 * 'httpClose()' - Close an HTTP connection.
ef416fc2 379 */
380
381void
568fa3fa 382httpClose(http_t *http) /* I - Connection to server */
ef416fc2 383{
f7deaa1a 384#ifdef HAVE_GSSAPI
1f0275e3 385 OM_uint32 minor_status; /* Minor status code */
f7deaa1a 386#endif /* HAVE_GSSAPI */
387
388
e07d4801 389 DEBUG_printf(("httpClose(http=%p)", http));
ef416fc2 390
6d2f911b
MS		 391 /*
392 * Range check input...
393 */
394
ef416fc2 395 if (!http)
396 return;
397
6d2f911b
MS		 398 /*
399 * Close any open connection...
400 */
401
402 _httpDisconnect(http);
403
404 /*
405 * Free memory used...
406 */
407
ef416fc2 408 httpAddrFreeList(http->addrlist);
409
ef416fc2 410 if (http->cookie)
411 free(http->cookie);
412
f7deaa1a 413#ifdef HAVE_GSSAPI
414 if (http->gssctx != GSS_C_NO_CONTEXT)
1f0275e3 415 gss_delete_sec_context(&minor_status, &http->gssctx, GSS_C_NO_BUFFER);
f7deaa1a 416
417 if (http->gssname != GSS_C_NO_NAME)
1f0275e3 418 gss_release_name(&minor_status, &http->gssname);
f7deaa1a 419#endif /* HAVE_GSSAPI */
420
b94498cf 421#ifdef HAVE_AUTHORIZATION_H
422 if (http->auth_ref)
423 AuthorizationFree(http->auth_ref, kAuthorizationFlagDefaults);
424#endif /* HAVE_AUTHORIZATION_H */
425
f7deaa1a 426 httpClearFields(http);
427
428 if (http->authstring && http->authstring != http->_authstring)
429 free(http->authstring);
430
ef416fc2 431 free(http);
432}
433
434
435/*
436 * 'httpConnect()' - Connect to a HTTP server.
1ff0402e
MS		 437 *
438 * This function is deprecated - use @link httpConnectEncrypt@ instead.
439 *
440 * @deprecated@
ef416fc2 441 */
442
443http_t * /* O - New HTTP connection */
444httpConnect(const char *host, /* I - Host to connect to */
445 int port) /* I - Port number */
446{
1ff0402e
MS		 447 return (httpConnectEncrypt(host, port, HTTP_ENCRYPT_IF_REQUESTED));
448}
449
450
451/*
452 * 'httpConnectEncrypt()' - Connect to a HTTP server using encryption.
453 */
454
455http_t * /* O - New HTTP connection */
456httpConnectEncrypt(
457 const char *host, /* I - Host to connect to */
458 int port, /* I - Port number */
459 http_encryption_t encryption) /* I - Type of encryption to use */
460{
461 http_t *http; /* New HTTP connection */
ef416fc2 462
463
e07d4801 464 DEBUG_printf(("httpConnectEncrypt(host=\"%s\", port=%d, encryption=%d)",
1ff0402e
MS		 465 host, port, encryption));
466
ef416fc2 467 /*
1ff0402e 468 * Create the HTTP structure...
ef416fc2 469 */
470
c8fef167 471 if ((http = _httpCreate(host, port, NULL, encryption, AF_UNSPEC)) == NULL)
1ff0402e 472 return (NULL);
ef416fc2 473
1ff0402e
MS		 474 /*
475 * Connect to the remote system...
476 */
477
478 if (!httpReconnect(http))
479 return (http);
480
481 /*
482 * Could not connect to any known address - bail out!
483 */
484
485 httpAddrFreeList(http->addrlist);
486
487 free(http);
488
489 return (NULL);
ef416fc2 490}
491
492
7cf5915e
MS		 493/*
494 * 'httpCopyCredentials()' - Copy the credentials associated with an encrypted
495 * connection.
496 *
f3c17241 497 * @since CUPS 1.5/OS X 10.7@
7cf5915e
MS		 498 */
499
500int /* O - Status of call (0 = success) */
501httpCopyCredentials(
502 http_t *http, /* I - Connection to server */
503 cups_array_t **credentials) /* O - Array of credentials */
504{
505# ifdef HAVE_LIBSSL
506# elif defined(HAVE_GNUTLS)
82f97232 507# elif defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
7cf5915e
MS		 508 OSStatus error; /* Error code */
509 CFIndex count; /* Number of credentials */
510 CFArrayRef peerCerts; /* Peer certificates */
511 SecCertificateRef secCert; /* Certificate reference */
512 CFDataRef data; /* Certificate data */
513 int i; /* Looping var */
514# elif defined(HAVE_SSPISSL)
515# endif /* HAVE_LIBSSL */
516
517
518 if (credentials)
519 *credentials = NULL;
520
521 if (!http || !http->tls || !credentials)
522 return (-1);
523
524# ifdef HAVE_LIBSSL
525 return (-1);
526
527# elif defined(HAVE_GNUTLS)
528 return (-1);
529
82f97232 530# elif defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
7cf5915e
MS		 531 if (!(error = SSLCopyPeerCertificates(http->tls, &peerCerts)) && peerCerts)
532 {
533 if ((*credentials = cupsArrayNew(NULL, NULL)) != NULL)
534 {
535 for (i = 0, count = CFArrayGetCount(peerCerts); i < count; i++)
536 {
537 secCert = (SecCertificateRef)CFArrayGetValueAtIndex(peerCerts, i);
538 if ((data = SecCertificateCopyData(secCert)))
539 {
540 httpAddCredential(*credentials, CFDataGetBytePtr(data),
541 CFDataGetLength(data));
542 CFRelease(data);
543 }
544 }
545 }
546
547 CFRelease(peerCerts);
548 }
549
550 return (error);
551
552# elif defined(HAVE_SSPISSL)
553 return (-1);
82f97232
MS		 554
555# else
556 return (-1);
7cf5915e
MS		 557# endif /* HAVE_LIBSSL */
558}
559
560
ef416fc2 561/*
1ff0402e 562 * '_httpCreate()' - Create an unconnected HTTP connection.
ef416fc2 563 */
564
1ff0402e
MS		 565http_t * /* O - HTTP connection */
566_httpCreate(
567 const char *host, /* I - Hostname */
ef416fc2 568 int port, /* I - Port number */
c8fef167 569 http_addrlist_t *addrlist, /* I - Address list or NULL */
1106b00e
MS		 570 http_encryption_t encryption, /* I - Encryption to use */
571 int family) /* I - Address family or AF_UNSPEC */
ef416fc2 572{
c8fef167
MS		 573 http_t *http; /* New HTTP connection */
574 char service[255]; /* Service name */
ef416fc2 575
576
e07d4801 577 DEBUG_printf(("4_httpCreate(host=\"%s\", port=%d, encryption=%d)",
1ff0402e 578 host, port, encryption));
ef416fc2 579
580 if (!host)
581 return (NULL);
582
583 httpInitialize();
584
585 /*
586 * Lookup the host...
587 */
588
589 sprintf(service, "%d", port);
590
c8fef167
MS		 591 if (!addrlist)
592 if ((addrlist = httpAddrGetList(host, family, service)) == NULL)
593 return (NULL);
ef416fc2 594
595 /*
596 * Allocate memory for the structure...
597 */
598
91c84a35
MS		 599 if ((http = calloc(sizeof(http_t), 1)) == NULL)
600 {
dcb445bc 601 _cupsSetError(IPP_INTERNAL_ERROR, strerror(errno), 0);
91c84a35 602 httpAddrFreeList(addrlist);
ef416fc2 603 return (NULL);
91c84a35 604 }
ef416fc2 605
1ff0402e
MS		 606 /*
607 * Initialize the HTTP data...
608 */
609
ef416fc2 610 http->activity = time(NULL);
1ff0402e
MS		 611 http->addrlist = addrlist;
612 http->blocking = 1;
ef416fc2 613 http->fd = -1;
f7deaa1a 614#ifdef HAVE_GSSAPI
1ff0402e
MS		 615 http->gssctx = GSS_C_NO_CONTEXT;
616 http->gssname = GSS_C_NO_NAME;
f7deaa1a 617#endif /* HAVE_GSSAPI */
1ff0402e 618 http->version = HTTP_1_1;
f7deaa1a 619
1ff0402e 620 strlcpy(http->hostname, host, sizeof(http->hostname));
ef416fc2 621
622 if (port == 443) /* Always use encryption for https */
623 http->encryption = HTTP_ENCRYPT_ALWAYS;
624 else
625 http->encryption = encryption;
626
85dda01c
MS		 627 http_set_wait(http);
628
ef416fc2 629 /*
1ff0402e 630 * Return the new structure...
ef416fc2 631 */
632
1ff0402e 633 return (http);
ef416fc2 634}
635
636
85dda01c
MS		 637/*
638 * '_httpCreateCredentials()' - Create credentials in the internal format.
639 */
640
641http_tls_credentials_t /* O - Internal credentials */
642_httpCreateCredentials(
643 cups_array_t *credentials) /* I - Array of credentials */
644{
645 if (!credentials)
646 return (NULL);
647
648# ifdef HAVE_LIBSSL
649 return (NULL);
650
651# elif defined(HAVE_GNUTLS)
652 return (NULL);
653
654# elif defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
655 CFMutableArrayRef peerCerts; /* Peer credentials reference */
656 SecCertificateRef secCert; /* Certificate reference */
657 CFDataRef data; /* Credential data reference */
658 http_credential_t *credential; /* Credential data */
659
660
661 if ((peerCerts = CFArrayCreateMutable(kCFAllocatorDefault,
662 cupsArrayCount(credentials),
663 &kCFTypeArrayCallBacks)) == NULL)
664 return (NULL);
665
666 for (credential = (http_credential_t *)cupsArrayFirst(credentials);
667 credential;
668 credential = (http_credential_t *)cupsArrayNext(credentials))
669 {
670 if ((data = CFDataCreate(kCFAllocatorDefault, credential->data,
671 credential->datalen)))
672 {
673 if ((secCert = SecCertificateCreateWithData(kCFAllocatorDefault, data))
674 != NULL)
675 {
676 CFArrayAppendValue(peerCerts, secCert);
677 CFRelease(secCert);
678 }
679
680 CFRelease(data);
681 }
682 }
683
684 return (peerCerts);
685
686# elif defined(HAVE_SSPISSL)
687 return (NULL);
688
689# else
690 return (NULL);
691# endif /* HAVE_LIBSSL */
692}
693
694
ef416fc2 695/*
696 * 'httpDelete()' - Send a DELETE request to the server.
697 */
698
699int /* O - Status of call (0 = success) */
568fa3fa 700httpDelete(http_t *http, /* I - Connection to server */
ef416fc2 701 const char *uri) /* I - URI to delete */
702{
703 return (http_send(http, HTTP_DELETE, uri));
704}
705
706
6d2f911b
MS		 707/*
708 * '_httpDisconnect()' - Disconnect a HTTP connection.
709 */
710
711void
712_httpDisconnect(http_t *http) /* I - Connection to server */
713{
714#ifdef HAVE_SSL
715 if (http->tls)
716 http_shutdown_ssl(http);
717#endif /* HAVE_SSL */
718
719#ifdef WIN32
720 closesocket(http->fd);
721#else
722 close(http->fd);
723#endif /* WIN32 */
724
725 http->fd = -1;
726}
727
728
ef416fc2 729/*
730 * 'httpEncryption()' - Set the required encryption on the link.
731 */
732
733int /* O - -1 on error, 0 on success */
568fa3fa 734httpEncryption(http_t *http, /* I - Connection to server */
ef416fc2 735 http_encryption_t e) /* I - New encryption preference */
736{
e07d4801 737 DEBUG_printf(("httpEncryption(http=%p, e=%d)", http, e));
ef416fc2 738
739#ifdef HAVE_SSL
740 if (!http)
741 return (0);
742
743 http->encryption = e;
744
745 if ((http->encryption == HTTP_ENCRYPT_ALWAYS && !http->tls) ||
746 (http->encryption == HTTP_ENCRYPT_NEVER && http->tls))
747 return (httpReconnect(http));
748 else if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls)
749 return (http_upgrade(http));
750 else
751 return (0);
752#else
753 if (e == HTTP_ENCRYPT_ALWAYS || e == HTTP_ENCRYPT_REQUIRED)
754 return (-1);
755 else
756 return (0);
757#endif /* HAVE_SSL */
758}
759
760
ecdc0628 761/*
762 * 'httpError()' - Get the last error on a connection.
763 */
764
765int /* O - Error code (errno) value */
568fa3fa 766httpError(http_t *http) /* I - Connection to server */
ecdc0628 767{
768 if (http)
769 return (http->error);
770 else
771 return (EINVAL);
772}
773
774
ef416fc2 775/*
776 * 'httpFlush()' - Flush data from a HTTP connection.
777 */
778
779void
568fa3fa 780httpFlush(http_t *http) /* I - Connection to server */
ef416fc2 781{
f8b3a85b
MS		 782 char buffer[8192]; /* Junk buffer */
783 int blocking; /* To block or not to block */
784 http_state_t oldstate; /* Old state */
ef416fc2 785
786
f11a948a
MS		 787 DEBUG_printf(("httpFlush(http=%p), state=%s", http,
788 http_states[http->state]));
ef416fc2 789
fa73b229 790 /*
791 * Temporarily set non-blocking mode so we don't get stuck in httpRead()...
792 */
793
794 blocking = http->blocking;
795 http->blocking = 0;
796
797 /*
798 * Read any data we can...
799 */
800
f8b3a85b 801 oldstate = http->state;
a4d04587 802 while (httpRead2(http, buffer, sizeof(buffer)) > 0);
fa73b229 803
804 /*
805 * Restore blocking and reset the connection if we didn't get all of
806 * the remaining data...
807 */
808
809 http->blocking = blocking;
810
aaf19ab0 811 if (http->state == oldstate && http->state != HTTP_WAITING && http->fd >= 0)
fa73b229 812 {
813 /*
814 * Didn't get the data back, so close the current connection.
815 */
816
817 http->state = HTTP_WAITING;
818
819#ifdef HAVE_SSL
820 if (http->tls)
821 http_shutdown_ssl(http);
822#endif /* HAVE_SSL */
823
824#ifdef WIN32
825 closesocket(http->fd);
826#else
827 close(http->fd);
828#endif /* WIN32 */
829
830 http->fd = -1;
831 }
ef416fc2 832}
833
834
835/*
836 * 'httpFlushWrite()' - Flush data in write buffer.
837 *
f3c17241 838 * @since CUPS 1.2/OS X 10.5@
ef416fc2 839 */
840
841int /* O - Bytes written or -1 on error */
568fa3fa 842httpFlushWrite(http_t *http) /* I - Connection to server */
ef416fc2 843{
844 int bytes; /* Bytes written */
845
846
e07d4801 847 DEBUG_printf(("httpFlushWrite(http=%p)", http));
ef416fc2 848
849 if (!http || !http->wused)
f8b3a85b
MS		 850 {
851 DEBUG_puts(http ? "1httpFlushWrite: Write buffer is empty." :
852 "1httpFlushWrite: No connection.");
ef416fc2 853 return (0);
f8b3a85b 854 }
ef416fc2 855
856 if (http->data_encoding == HTTP_ENCODE_CHUNKED)
857 bytes = http_write_chunk(http, http->wbuffer, http->wused);
858 else
859 bytes = http_write(http, http->wbuffer, http->wused);
860
861 http->wused = 0;
862
22c9029b 863 DEBUG_printf(("1httpFlushWrite: Returning %d, errno=%d.", bytes, errno));
f8b3a85b 864
ef416fc2 865 return (bytes);
866}
867
868
7cf5915e
MS		 869/*
870 * '_httpFreeCredentials()' - Free internal credentials.
871 */
872
873void
874_httpFreeCredentials(
875 http_tls_credentials_t credentials) /* I - Internal credentials */
876{
877 if (!credentials)
878 return;
879
880#ifdef HAVE_LIBSSL
881 (void)credentials;
882
883#elif defined(HAVE_GNUTLS)
884 (void)credentials;
885
886#elif defined(HAVE_CDSASSL)
887 CFRelease(credentials);
888
889#elif defined(HAVE_SSPISSL)
890 (void)credentials;
891
892#endif /* HAVE_LIBSSL */
893}
894
895
896/*
897 * 'httpFreeCredentials()' - Free an array of credentials.
898 */
899
900void
901httpFreeCredentials(
902 cups_array_t *credentials) /* I - Array of credentials */
903{
904 http_credential_t *credential; /* Credential */
905
906
907 for (credential = (http_credential_t *)cupsArrayFirst(credentials);
908 credential;
909 credential = (http_credential_t *)cupsArrayNext(credentials))
910 {
911 cupsArrayRemove(credentials, credential);
912 free((void *)credential->data);
913 free(credential);
914 }
915
916 cupsArrayDelete(credentials);
917}
918
919
ef416fc2 920/*
921 * 'httpGet()' - Send a GET request to the server.
922 */
923
924int /* O - Status of call (0 = success) */
568fa3fa 925httpGet(http_t *http, /* I - Connection to server */
ef416fc2 926 const char *uri) /* I - URI to get */
927{
928 return (http_send(http, HTTP_GET, uri));
929}
930
931
355e94dc
MS		 932/*
933 * 'httpGetAuthString()' - Get the current authorization string.
934 *
935 * The authorization string is set by cupsDoAuthentication() and
936 * httpSetAuthString(). Use httpGetAuthString() to retrieve the
937 * string to use with httpSetField() for the HTTP_FIELD_AUTHORIZATION
938 * value.
939 *
f3c17241 940 * @since CUPS 1.3/OS X 10.5@
355e94dc
MS		 941 */
942
943char * /* O - Authorization string */
568fa3fa 944httpGetAuthString(http_t *http) /* I - Connection to server */
355e94dc
MS		 945{
946 if (http)
947 return (http->authstring);
948 else
949 return (NULL);
950}
951
952
ecdc0628 953/*
954 * 'httpGetBlocking()' - Get the blocking/non-block state of a connection.
955 *
f3c17241 956 * @since CUPS 1.2/OS X 10.5@
ecdc0628 957 */
958
959int /* O - 1 if blocking, 0 if non-blocking */
568fa3fa 960httpGetBlocking(http_t *http) /* I - Connection to server */
ecdc0628 961{
962 return (http ? http->blocking : 0);
963}
964
965
966/*
967 * 'httpGetCookie()' - Get any cookie data from the response.
757d2cad 968 *
f3c17241 969 * @since CUPS 1.1.19/OS X 10.3@
ecdc0628 970 */
971
972const char * /* O - Cookie data or NULL */
973httpGetCookie(http_t *http) /* I - HTTP connecion */
974{
975 return (http ? http->cookie : NULL);
976}
977
978
979/*
980 * 'httpGetFd()' - Get the file descriptor associated with a connection.
981 *
f3c17241 982 * @since CUPS 1.2/OS X 10.5@
ecdc0628 983 */
984
985int /* O - File descriptor or -1 if none */
568fa3fa 986httpGetFd(http_t *http) /* I - Connection to server */
ecdc0628 987{
988 return (http ? http->fd : -1);
989}
990
991
992/*
993 * 'httpGetField()' - Get a field value from a request/response.
994 */
995
996const char * /* O - Field value */
568fa3fa 997httpGetField(http_t *http, /* I - Connection to server */
ecdc0628 998 http_field_t field) /* I - Field to get */
999{
1000 if (!http || field <= HTTP_FIELD_UNKNOWN || field >= HTTP_FIELD_MAX)
1001 return (NULL);
ef55b745 1002 else if (field == HTTP_FIELD_AUTHORIZATION &&
f7deaa1a 1003 http->field_authorization)
1004 {
1005 /*
1006 * Special case for WWW-Authenticate: as its contents can be
1007 * longer than HTTP_MAX_VALUE...
1008 */
1009
1010 return (http->field_authorization);
1011 }
ecdc0628 1012 else
1013 return (http->fields[field]);
1014}
1015
1016
1017/*
1018 * 'httpGetLength()' - Get the amount of data remaining from the
1019 * content-length or transfer-encoding fields.
1020 *
1021 * This function is deprecated and will not return lengths larger than
1022 * 2^31 - 1; use httpGetLength2() instead.
1023 *
1024 * @deprecated@
1025 */
1026
1027int /* O - Content length */
568fa3fa 1028httpGetLength(http_t *http) /* I - Connection to server */
ecdc0628 1029{
1030 /*
1031 * Get the read content length and return the 32-bit value.
1032 */
1033
1034 if (http)
1035 {
1036 httpGetLength2(http);
1037
1038 return (http->_data_remaining);
1039 }
1040 else
1041 return (-1);
1042}
1043
1044
1045/*
1046 * 'httpGetLength2()' - Get the amount of data remaining from the
1047 * content-length or transfer-encoding fields.
1048 *
1049 * This function returns the complete content length, even for
1050 * content larger than 2^31 - 1.
1051 *
f3c17241 1052 * @since CUPS 1.2/OS X 10.5@
ecdc0628 1053 */
1054
1055off_t /* O - Content length */
568fa3fa 1056httpGetLength2(http_t *http) /* I - Connection to server */
ecdc0628 1057{
f11a948a
MS		 1058 DEBUG_printf(("2httpGetLength2(http=%p), state=%s", http,
1059 http_states[http->state]));
ecdc0628 1060
1061 if (!http)
1062 return (-1);
1063
88f9aafc 1064 if (!_cups_strcasecmp(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked"))
ecdc0628 1065 {
e07d4801 1066 DEBUG_puts("4httpGetLength2: chunked request!");
ecdc0628 1067
1068 http->data_encoding = HTTP_ENCODE_CHUNKED;
1069 http->data_remaining = 0;
1070 }
1071 else
1072 {
1073 http->data_encoding = HTTP_ENCODE_LENGTH;
1074
1075 /*
1076 * The following is a hack for HTTP servers that don't send a
1077 * content-length or transfer-encoding field...
1078 *
1079 * If there is no content-length then the connection must close
1080 * after the transfer is complete...
1081 */
1082
b86bc4cf 1083 if (!http->fields[HTTP_FIELD_CONTENT_LENGTH][0])
1084 {
1085 /*
1086 * Default content length is 0 for errors and 2^31-1 for other
1087 * successful requests...
1088 */
1089
1090 if (http->status >= HTTP_MULTIPLE_CHOICES)
1091 http->data_remaining = 0;
1092 else
1093 http->data_remaining = 2147483647;
1094 }
ecdc0628 1095 else
1096 http->data_remaining = strtoll(http->fields[HTTP_FIELD_CONTENT_LENGTH],
1097 NULL, 10);
1098
e07d4801 1099 DEBUG_printf(("4httpGetLength2: content_length=" CUPS_LLFMT,
ecdc0628 1100 CUPS_LLCAST http->data_remaining));
1101 }
1102
1103 if (http->data_remaining <= INT_MAX)
1104 http->_data_remaining = (int)http->data_remaining;
1105 else
1106 http->_data_remaining = INT_MAX;
1107
1108 return (http->data_remaining);
1109}
1110
1111
ef416fc2 1112/*
1113 * 'httpGets()' - Get a line of text from a HTTP connection.
1114 */
1115
1116char * /* O - Line or NULL */
1117httpGets(char *line, /* I - Line to read into */
1118 int length, /* I - Max length of buffer */
568fa3fa 1119 http_t *http) /* I - Connection to server */
ef416fc2 1120{
1121 char *lineptr, /* Pointer into line */
1122 *lineend, /* End of line */
1123 *bufptr, /* Pointer into input buffer */
1124 *bufend; /* Pointer to end of buffer */
1125 int bytes, /* Number of bytes read */
1126 eol; /* End-of-line? */
1127
1128
e07d4801 1129 DEBUG_printf(("2httpGets(line=%p, length=%d, http=%p)", line, length, http));
ef416fc2 1130
1131 if (http == NULL || line == NULL)
1132 return (NULL);
1133
1134 /*
1135 * Read a line from the buffer...
1136 */
f11a948a
MS		 1137
1138 http->error = 0;
1139 lineptr = line;
1140 lineend = line + length - 1;
1141 eol = 0;
ef416fc2 1142
1143 while (lineptr < lineend)
1144 {
1145 /*
1146 * Pre-load the buffer as needed...
1147 */
1148
1149#ifdef WIN32
1150 WSASetLastError(0);
1151#else
1152 errno = 0;
1153#endif /* WIN32 */
1154
1155 while (http->used == 0)
1156 {
1157 /*
1158 * No newline; see if there is more data to be read...
1159 */
1160
85dda01c 1161 while (!_httpWait(http, http->wait_value, 1))
89d46774 1162 {
f228370c
MS		 1163 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
1164 continue;
1165
e07d4801 1166 DEBUG_puts("3httpGets: Timed out!");
b86bc4cf 1167#ifdef WIN32
1168 http->error = WSAETIMEDOUT;
1169#else
89d46774 1170 http->error = ETIMEDOUT;
b86bc4cf 1171#endif /* WIN32 */
ef416fc2 1172 return (NULL);
89d46774 1173 }
ef416fc2 1174
1175#ifdef HAVE_SSL
1176 if (http->tls)
1177 bytes = http_read_ssl(http, http->buffer + http->used,
1178 HTTP_MAX_BUFFER - http->used);
1179 else
1180#endif /* HAVE_SSL */
1181 bytes = recv(http->fd, http->buffer + http->used,
1182 HTTP_MAX_BUFFER - http->used, 0);
1183
e07d4801 1184 DEBUG_printf(("4httpGets: read %d bytes...", bytes));
ef416fc2 1185
12f89d24
MS		 1186#ifdef DEBUG
1187 http_debug_hex("httpGets", http->buffer + http->used, bytes);
1188#endif /* DEBUG */
1189
ef416fc2 1190 if (bytes < 0)
1191 {
1192 /*
1193 * Nope, can't get a line this time...
1194 */
1195
1196#ifdef WIN32
cc754834
MS		 1197 DEBUG_printf(("3httpGets: recv() error %d!", WSAGetLastError()));
1198
10d09e33 1199 if (WSAGetLastError() == WSAEINTR)
cc754834 1200 continue;
10d09e33
MS		 1201 else if (WSAGetLastError() == WSAEWOULDBLOCK)
1202 {
1203 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
1204 continue;
1205
1206 http->error = WSAGetLastError();
1207 }
cc754834 1208 else if (WSAGetLastError() != http->error)
ef416fc2 1209 {
1210 http->error = WSAGetLastError();
1211 continue;
1212 }
1213
ef416fc2 1214#else
e07d4801 1215 DEBUG_printf(("3httpGets: recv() error %d!", errno));
ef416fc2 1216
10d09e33 1217 if (errno == EINTR)
ef416fc2 1218 continue;
10d09e33
MS		 1219 else if (errno == EWOULDBLOCK || errno == EAGAIN)
1220 {
1221 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
1222 continue;
1223 else if (!http->timeout_cb && errno == EAGAIN)
1224 continue;
1225
1226 http->error = errno;
1227 }
ef416fc2 1228 else if (errno != http->error)
1229 {
1230 http->error = errno;
1231 continue;
1232 }
1233#endif /* WIN32 */
1234
1235 return (NULL);
1236 }
1237 else if (bytes == 0)
1238 {
1239 http->error = EPIPE;
1240
1241 return (NULL);
1242 }
1243
1244 /*
1245 * Yup, update the amount used...
1246 */
1247
1248 http->used += bytes;
1249 }
1250
1251 /*
1252 * Now copy as much of the current line as possible...
1253 */
1254
1255 for (bufptr = http->buffer, bufend = http->buffer + http->used;
1256 lineptr < lineend && bufptr < bufend;)
1257 {
1258 if (*bufptr == 0x0a)
1259 {
1260 eol = 1;
1261 bufptr ++;
1262 break;
1263 }
1264 else if (*bufptr == 0x0d)
1265 bufptr ++;
1266 else
1267 *lineptr++ = *bufptr++;
1268 }
1269
b86bc4cf 1270 http->used -= (int)(bufptr - http->buffer);
ef416fc2 1271 if (http->used > 0)
1272 memmove(http->buffer, bufptr, http->used);
1273
1274 if (eol)
1275 {
1276 /*
1277 * End of line...
1278 */
1279
1280 http->activity = time(NULL);
1281
1282 *lineptr = '\0';
ef55b745 1283
e07d4801 1284 DEBUG_printf(("3httpGets: Returning \"%s\"", line));
ef416fc2 1285
1286 return (line);
1287 }
1288 }
1289
e07d4801 1290 DEBUG_puts("3httpGets: No new line available!");
ef416fc2 1291
1292 return (NULL);
1293}
1294
1295
a2326b5b
MS		 1296/*
1297 * 'httpGetState()' - Get the current state of the HTTP request.
1298 */
1299
1300http_state_t /* O - HTTP state */
1301httpGetState(http_t *http) /* I - Connection to server */
1302{
1303 return (http ? http->state : HTTP_ERROR);
1304}
1305
1306
1307/*
1308 * 'httpGetStatus()' - Get the status of the last HTTP request.
1309 *
f3c17241 1310 * @since CUPS 1.2/OS X 10.5@
a2326b5b
MS		 1311 */
1312
1313http_status_t /* O - HTTP status */
1314httpGetStatus(http_t *http) /* I - Connection to server */
1315{
1316 return (http ? http->status : HTTP_ERROR);
1317}
1318
1319
1320/*
1321 * 'httpGetSubField()' - Get a sub-field value.
1322 *
1323 * @deprecated@
1324 */
1325
1326char * /* O - Value or NULL */
1327httpGetSubField(http_t *http, /* I - Connection to server */
1328 http_field_t field, /* I - Field index */
1329 const char *name, /* I - Name of sub-field */
1330 char *value) /* O - Value string */
1331{
1332 return (httpGetSubField2(http, field, name, value, HTTP_MAX_VALUE));
1333}
1334
1335
1336/*
1337 * 'httpGetSubField2()' - Get a sub-field value.
1338 *
f3c17241 1339 * @since CUPS 1.2/OS X 10.5@
a2326b5b
MS		 1340 */
1341
1342char * /* O - Value or NULL */
1343httpGetSubField2(http_t *http, /* I - Connection to server */
1344 http_field_t field, /* I - Field index */
1345 const char *name, /* I - Name of sub-field */
1346 char *value, /* O - Value string */
1347 int valuelen) /* I - Size of value buffer */
1348{
1349 const char *fptr; /* Pointer into field */
1350 char temp[HTTP_MAX_VALUE], /* Temporary buffer for name */
1351 *ptr, /* Pointer into string buffer */
1352 *end; /* End of value buffer */
1353
1354 DEBUG_printf(("2httpGetSubField2(http=%p, field=%d, name=\"%s\", value=%p, "
1355 "valuelen=%d)", http, field, name, value, valuelen));
1356
1357 if (!http || !name || !value || valuelen < 2 ||
1358 field <= HTTP_FIELD_UNKNOWN || field >= HTTP_FIELD_MAX)
1359 return (NULL);
1360
1361 end = value + valuelen - 1;
1362
1363 for (fptr = http->fields[field]; *fptr;)
1364 {
1365 /*
1366 * Skip leading whitespace...
1367 */
1368
1369 while (_cups_isspace(*fptr))
1370 fptr ++;
1371
1372 if (*fptr == ',')
1373 {
1374 fptr ++;
1375 continue;
1376 }
1377
1378 /*
1379 * Get the sub-field name...
1380 */
1381
1382 for (ptr = temp;
1383 *fptr && *fptr != '=' && !_cups_isspace(*fptr) &&
1384 ptr < (temp + sizeof(temp) - 1);
1385 *ptr++ = *fptr++);
1386
1387 *ptr = '\0';
1388
1389 DEBUG_printf(("4httpGetSubField2: name=\"%s\"", temp));
1390
1391 /*
1392 * Skip trailing chars up to the '='...
1393 */
1394
1395 while (_cups_isspace(*fptr))
1396 fptr ++;
1397
1398 if (!*fptr)
1399 break;
1400
1401 if (*fptr != '=')
1402 continue;
1403
1404 /*
1405 * Skip = and leading whitespace...
1406 */
1407
1408 fptr ++;
1409
1410 while (_cups_isspace(*fptr))
1411 fptr ++;
1412
1413 if (*fptr == '\"')
1414 {
1415 /*
1416 * Read quoted string...
1417 */
1418
1419 for (ptr = value, fptr ++;
1420 *fptr && *fptr != '\"' && ptr < end;
1421 *ptr++ = *fptr++);
1422
1423 *ptr = '\0';
1424
1425 while (*fptr && *fptr != '\"')
1426 fptr ++;
1427
1428 if (*fptr)
1429 fptr ++;
1430 }
1431 else
1432 {
1433 /*
1434 * Read unquoted string...
1435 */
1436
1437 for (ptr = value;
1438 *fptr && !_cups_isspace(*fptr) && *fptr != ',' && ptr < end;
1439 *ptr++ = *fptr++);
1440
1441 *ptr = '\0';
1442
1443 while (*fptr && !_cups_isspace(*fptr) && *fptr != ',')
1444 fptr ++;
1445 }
1446
1447 DEBUG_printf(("4httpGetSubField2: value=\"%s\"", value));
1448
1449 /*
1450 * See if this is the one...
1451 */
1452
1453 if (!strcmp(name, temp))
1454 {
1455 DEBUG_printf(("3httpGetSubField2: Returning \"%s\"", value));
1456 return (value);
1457 }
1458 }
1459
1460 value[0] = '\0';
1461
1462 DEBUG_puts("3httpGetSubField2: Returning NULL");
1463
1464 return (NULL);
1465}
1466
1467
1468/*
1469 * 'httpGetVersion()' - Get the HTTP version at the other end.
1470 */
1471
1472http_version_t /* O - Version number */
1473httpGetVersion(http_t *http) /* I - Connection to server */
1474{
1475 return (http ? http->version : HTTP_1_0);
1476}
1477
1478
ef416fc2 1479/*
1480 * 'httpHead()' - Send a HEAD request to the server.
1481 */
1482
1483int /* O - Status of call (0 = success) */
568fa3fa 1484httpHead(http_t *http, /* I - Connection to server */
ef416fc2 1485 const char *uri) /* I - URI for head */
1486{
e07d4801 1487 DEBUG_printf(("httpHead(http=%p, uri=\"%s\")", http, uri));
ef416fc2 1488 return (http_send(http, HTTP_HEAD, uri));
1489}
1490
1491
1492/*
1493 * 'httpInitialize()' - Initialize the HTTP interface library and set the
1494 * default HTTP proxy (if any).
1495 */
1496
1497void
1498httpInitialize(void)
1499{
6d2f911b
MS		 1500 static int initialized = 0; /* Have we been called before? */
1501#ifdef WIN32
1502 WSADATA winsockdata; /* WinSock data */
1503#endif /* WIN32 */
ef416fc2 1504#ifdef HAVE_LIBSSL
6d2f911b
MS		 1505 int i; /* Looping var */
1506 unsigned char data[1024]; /* Seed data */
ef416fc2 1507#endif /* HAVE_LIBSSL */
1508
ef416fc2 1509
6d2f911b
MS		 1510 _cupsGlobalLock();
1511 if (initialized)
1512 {
1513 _cupsGlobalUnlock();
1514 return;
1515 }
1516
1517#ifdef WIN32
c7017ecc 1518 WSAStartup(MAKEWORD(2,2), &winsockdata);
ef416fc2 1519
fa73b229 1520#elif !defined(SO_NOSIGPIPE)
ef416fc2 1521 /*
1522 * Ignore SIGPIPE signals...
1523 */
1524
fa73b229 1525# ifdef HAVE_SIGSET
1526 sigset(SIGPIPE, SIG_IGN);
6d2f911b 1527
fa73b229 1528# elif defined(HAVE_SIGACTION)
1529 struct sigaction action; /* POSIX sigaction data */
1530
1531
ef416fc2 1532 memset(&action, 0, sizeof(action));
1533 action.sa_handler = SIG_IGN;
1534 sigaction(SIGPIPE, &action, NULL);
6d2f911b 1535
fa73b229 1536# else
ef416fc2 1537 signal(SIGPIPE, SIG_IGN);
fa73b229 1538# endif /* !SO_NOSIGPIPE */
ef416fc2 1539#endif /* WIN32 */
1540
1541#ifdef HAVE_GNUTLS
6d2f911b
MS		 1542 /*
1543 * Initialize GNU TLS...
1544 */
1545
ef416fc2 1546 gnutls_global_init();
ef416fc2 1547
6d2f911b
MS		 1548#elif defined(HAVE_LIBSSL)
1549 /*
1550 * Initialize OpenSSL...
1551 */
1552
ef416fc2 1553 SSL_load_error_strings();
1554 SSL_library_init();
1555
1556 /*
1557 * Using the current time is a dubious random seed, but on some systems
1558 * it is the best we can do (on others, this seed isn't even used...)
1559 */
1560
6d2f911b 1561 CUPS_SRAND(time(NULL));
ef416fc2 1562
1563 for (i = 0; i < sizeof(data); i ++)
6d2f911b 1564 data[i] = CUPS_RAND();
ef416fc2 1565
dfd5680b 1566 RAND_seed(data, sizeof(data));
6d2f911b
MS		 1567#endif /* HAVE_GNUTLS */
1568
1569 initialized = 1;
1570 _cupsGlobalUnlock();
ef416fc2 1571}
1572
1573
1574/*
1575 * 'httpOptions()' - Send an OPTIONS request to the server.
1576 */
1577
1578int /* O - Status of call (0 = success) */
568fa3fa 1579httpOptions(http_t *http, /* I - Connection to server */
ef416fc2 1580 const char *uri) /* I - URI for options */
1581{
1582 return (http_send(http, HTTP_OPTIONS, uri));
1583}
1584
1585
6d2f911b
MS		 1586/*
1587 * '_httpPeek()' - Peek at data from a HTTP connection.
1588 *
1589 * This function copies available data from the given HTTP connection, reading
1590 * a buffer as needed. The data is still available for reading using
1591 * @link httpRead@ or @link httpRead2@.
1592 *
1593 * For non-blocking connections the usual timeouts apply.
1594 */
1595
1596ssize_t /* O - Number of bytes copied */
1597_httpPeek(http_t *http, /* I - Connection to server */
1598 char *buffer, /* I - Buffer for data */
1599 size_t length) /* I - Maximum number of bytes */
1600{
1601 ssize_t bytes; /* Bytes read */
1602 char len[32]; /* Length string */
1603
1604
1605 DEBUG_printf(("_httpPeek(http=%p, buffer=%p, length=" CUPS_LLFMT ")",
1606 http, buffer, CUPS_LLCAST length));
1607
1608 if (http == NULL || buffer == NULL)
1609 return (-1);
1610
1611 http->activity = time(NULL);
1612 http->error = 0;
1613
1614 if (length <= 0)
1615 return (0);
1616
1617 if (http->data_encoding == HTTP_ENCODE_CHUNKED &&
1618 http->data_remaining <= 0)
1619 {
1620 DEBUG_puts("2_httpPeek: Getting chunk length...");
1621
1622 if (httpGets(len, sizeof(len), http) == NULL)
1623 {
1624 DEBUG_puts("1_httpPeek: Could not get length!");
1625 return (0);
1626 }
1627
1628 http->data_remaining = strtoll(len, NULL, 16);
1629 if (http->data_remaining < 0)
1630 {
1631 DEBUG_puts("1_httpPeek: Negative chunk length!");
1632 return (0);
1633 }
1634 }
1635
1636 DEBUG_printf(("2_httpPeek: data_remaining=" CUPS_LLFMT,
1637 CUPS_LLCAST http->data_remaining));
1638
1639 if (http->data_remaining <= 0)
1640 {
1641 /*
1642 * A zero-length chunk ends a transfer; unless we are reading POST
1643 * data, go idle...
1644 */
1645
1646 if (http->data_encoding == HTTP_ENCODE_CHUNKED)
1647 httpGets(len, sizeof(len), http);
1648
1649 if (http->state == HTTP_POST_RECV)
1650 http->state ++;
1651 else
1652 http->state = HTTP_WAITING;
1653
1654 /*
1655 * Prevent future reads for this request...
1656 */
1657
1658 http->data_encoding = HTTP_ENCODE_LENGTH;
1659
1660 return (0);
1661 }
1662 else if (length > (size_t)http->data_remaining)
1663 length = (size_t)http->data_remaining;
1664
1665 if (http->used == 0)
1666 {
1667 /*
1668 * Buffer small reads for better performance...
1669 */
1670
3e7fe0ca
MS		 1671 ssize_t buflen; /* Length of read for buffer */
1672
f228370c
MS		 1673 if (!http->blocking)
1674 {
85dda01c 1675 while (!httpWait(http, http->wait_value))
f228370c
MS		 1676 {
1677 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
1678 continue;
1679
1680 return (0);
1681 }
1682 }
6d2f911b
MS		 1683
1684 if (http->data_remaining > sizeof(http->buffer))
3e7fe0ca 1685 buflen = sizeof(http->buffer);
6d2f911b 1686 else
3e7fe0ca
MS		 1687 buflen = http->data_remaining;
1688
1689 DEBUG_printf(("2_httpPeek: Reading %d bytes into buffer.", (int)buflen));
6d2f911b 1690
3e7fe0ca
MS		 1691 do
1692 {
6d2f911b 1693#ifdef HAVE_SSL
3e7fe0ca
MS		 1694 if (http->tls)
1695 bytes = http_read_ssl(http, http->buffer, buflen);
1696 else
6d2f911b 1697#endif /* HAVE_SSL */
3e7fe0ca 1698 bytes = recv(http->fd, http->buffer, buflen, 0);
6d2f911b 1699
3e7fe0ca 1700 if (bytes < 0)
cc754834 1701 {
3e7fe0ca
MS		 1702#ifdef WIN32
1703 if (WSAGetLastError() != WSAEINTR)
1704 {
1705 http->error = WSAGetLastError();
1706 return (-1);
1707 }
1708 else if (WSAGetLastError() == WSAEWOULDBLOCK)
1709 {
1710 if (!http->timeout_cb ||
1711 !(*http->timeout_cb)(http, http->timeout_data))
1712 {
1713 http->error = WSAEWOULDBLOCK;
1714 return (-1);
1715 }
1716 }
6d2f911b 1717#else
3e7fe0ca
MS		 1718 if (errno == EWOULDBLOCK || errno == EAGAIN)
1719 {
1720 if (http->timeout_cb && !(*http->timeout_cb)(http, http->timeout_data))
1721 {
1722 http->error = errno;
1723 return (-1);
1724 }
1725 else if (!http->timeout_cb && errno != EAGAIN)
1726 {
1727 http->error = errno;
1728 return (-1);
1729 }
1730 }
1731 else if (errno != EINTR)
1732 {
1733 http->error = errno;
1734 return (-1);
1735 }
6d2f911b 1736#endif /* WIN32 */
3e7fe0ca 1737 }
6d2f911b 1738 }
3e7fe0ca
MS		 1739 while (bytes < 0);
1740
1741 DEBUG_printf(("2_httpPeek: Read " CUPS_LLFMT " bytes into buffer.",
1742 CUPS_LLCAST bytes));
1743#ifdef DEBUG
1744 http_debug_hex("_httpPeek", http->buffer, (int)bytes);
1745#endif /* DEBUG */
1746
1747 http->used = bytes;
6d2f911b
MS		 1748 }
1749
1750 if (http->used > 0)
1751 {
1752 if (length > (size_t)http->used)
1753 length = (size_t)http->used;
1754
1755 bytes = (ssize_t)length;
1756
1757 DEBUG_printf(("2_httpPeek: grabbing %d bytes from input buffer...",
1758 (int)bytes));
1759
1760 memcpy(buffer, http->buffer, length);
1761 }
1762 else
1763 bytes = 0;
1764
1765 if (bytes < 0)
1766 {
1767#ifdef WIN32
cc754834
MS		 1768 if (WSAGetLastError() == WSAEINTR || WSAGetLastError() == WSAEWOULDBLOCK)
1769 bytes = 0;
1770 else
1771 http->error = WSAGetLastError();
6d2f911b
MS		 1772#else
1773 if (errno == EINTR || errno == EAGAIN)
1774 bytes = 0;
1775 else
1776 http->error = errno;
1777#endif /* WIN32 */
1778 }
1779 else if (bytes == 0)
1780 {
1781 http->error = EPIPE;
1782 return (0);
1783 }
1784
1785#ifdef DEBUG
1786 http_debug_hex("_httpPeek", buffer, (int)bytes);
1787#endif /* DEBUG */
1788
1789 return (bytes);
1790}
1791
1792
ef416fc2 1793/*
1794 * 'httpPost()' - Send a POST request to the server.
1795 */
1796
1797int /* O - Status of call (0 = success) */
568fa3fa 1798httpPost(http_t *http, /* I - Connection to server */
ef416fc2 1799 const char *uri) /* I - URI for post */
1800{
1801 return (http_send(http, HTTP_POST, uri));
1802}
1803
1804
1805/*
1806 * 'httpPrintf()' - Print a formatted string to a HTTP connection.
ecdc0628 1807 *
1808 * @private@
ef416fc2 1809 */
1810
1811int /* O - Number of bytes written */
568fa3fa 1812httpPrintf(http_t *http, /* I - Connection to server */
ef416fc2 1813 const char *format, /* I - printf-style format string */
1814 ...) /* I - Additional args as needed */
1815{
1816 int bytes; /* Number of bytes to write */
1817 char buf[16384]; /* Buffer for formatted string */
1818 va_list ap; /* Variable argument pointer */
1819
1820
e07d4801 1821 DEBUG_printf(("2httpPrintf(http=%p, format=\"%s\", ...)", http, format));
ef416fc2 1822
1823 va_start(ap, format);
1824 bytes = vsnprintf(buf, sizeof(buf), format, ap);
1825 va_end(ap);
1826
e07d4801 1827 DEBUG_printf(("3httpPrintf: %s", buf));
ef416fc2 1828
d09495fa 1829 if (http->data_encoding == HTTP_ENCODE_FIELDS)
1830 return (httpWrite2(http, buf, bytes));
1831 else
ef416fc2 1832 {
d09495fa 1833 if (http->wused)
1834 {
e07d4801 1835 DEBUG_puts("4httpPrintf: flushing existing data...");
ef416fc2 1836
d09495fa 1837 if (httpFlushWrite(http) < 0)
1838 return (-1);
1839 }
ef416fc2 1840
d09495fa 1841 return (http_write(http, buf, bytes));
1842 }
ef416fc2 1843}
1844
1845
1846/*
1847 * 'httpPut()' - Send a PUT request to the server.
1848 */
1849
1850int /* O - Status of call (0 = success) */
568fa3fa 1851httpPut(http_t *http, /* I - Connection to server */
ef416fc2 1852 const char *uri) /* I - URI to put */
1853{
e07d4801 1854 DEBUG_printf(("httpPut(http=%p, uri=\"%s\")", http, uri));
ef416fc2 1855 return (http_send(http, HTTP_PUT, uri));
1856}
1857
1858
1859/*
1860 * 'httpRead()' - Read data from a HTTP connection.
a4d04587 1861 *
1862 * This function is deprecated. Use the httpRead2() function which can
1863 * read more than 2GB of data.
1864 *
1865 * @deprecated@
ef416fc2 1866 */
1867
1868int /* O - Number of bytes read */
568fa3fa 1869httpRead(http_t *http, /* I - Connection to server */
ef416fc2 1870 char *buffer, /* I - Buffer for data */
1871 int length) /* I - Maximum number of bytes */
1872{
a4d04587 1873 return ((int)httpRead2(http, buffer, length));
1874}
1875
1876
1877/*
1878 * 'httpRead2()' - Read data from a HTTP connection.
ecdc0628 1879 *
f3c17241 1880 * @since CUPS 1.2/OS X 10.5@
a4d04587 1881 */
1882
1883ssize_t /* O - Number of bytes read */
568fa3fa 1884httpRead2(http_t *http, /* I - Connection to server */
a4d04587 1885 char *buffer, /* I - Buffer for data */
1886 size_t length) /* I - Maximum number of bytes */
1887{
1888 ssize_t bytes; /* Bytes read */
ef416fc2 1889 char len[32]; /* Length string */
1890
1891
e07d4801 1892 DEBUG_printf(("httpRead2(http=%p, buffer=%p, length=" CUPS_LLFMT ")",
a603edef 1893 http, buffer, CUPS_LLCAST length));
ef416fc2 1894
1895 if (http == NULL || buffer == NULL)
1896 return (-1);
1897
1898 http->activity = time(NULL);
f11a948a 1899 http->error = 0;
ef416fc2 1900
1901 if (length <= 0)
1902 return (0);
1903
1904 if (http->data_encoding == HTTP_ENCODE_CHUNKED &&
1905 http->data_remaining <= 0)
1906 {
e07d4801 1907 DEBUG_puts("2httpRead2: Getting chunk length...");
ef416fc2 1908
1909 if (httpGets(len, sizeof(len), http) == NULL)
1910 {
e07d4801 1911 DEBUG_puts("1httpRead2: Could not get length!");
ef416fc2 1912 return (0);
1913 }
1914
1915 http->data_remaining = strtoll(len, NULL, 16);
1916 if (http->data_remaining < 0)
1917 {
e07d4801 1918 DEBUG_puts("1httpRead2: Negative chunk length!");
ef416fc2 1919 return (0);
1920 }
1921 }
1922
e07d4801 1923 DEBUG_printf(("2httpRead2: data_remaining=" CUPS_LLFMT,
ef416fc2 1924 CUPS_LLCAST http->data_remaining));
1925
1926 if (http->data_remaining <= 0)
1927 {
1928 /*
1929 * A zero-length chunk ends a transfer; unless we are reading POST
1930 * data, go idle...
1931 */
1932
1933 if (http->data_encoding == HTTP_ENCODE_CHUNKED)
1934 httpGets(len, sizeof(len), http);
1935
1936 if (http->state == HTTP_POST_RECV)
1937 http->state ++;
1938 else
1939 http->state = HTTP_WAITING;
1940
1941 /*
1942 * Prevent future reads for this request...
1943 */
1944
1945 http->data_encoding = HTTP_ENCODE_LENGTH;
1946
1947 return (0);
1948 }
b86bc4cf 1949 else if (length > (size_t)http->data_remaining)
1950 length = (size_t)http->data_remaining;
ef416fc2 1951
1952 if (http->used == 0 && length <= 256)
1953 {
1954 /*
1955 * Buffer small reads for better performance...
1956 */
1957
83e08001
MS		 1958 ssize_t buflen; /* Length of read for buffer */
1959
f228370c
MS		 1960 if (!http->blocking)
1961 {
85dda01c 1962 while (!httpWait(http, http->wait_value))
f228370c
MS		 1963 {
1964 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
1965 continue;
1966
1967 return (0);
1968 }
1969 }
ef416fc2 1970
1971 if (http->data_remaining > sizeof(http->buffer))
83e08001 1972 buflen = sizeof(http->buffer);
ef416fc2 1973 else
83e08001 1974 buflen = http->data_remaining;
ef416fc2 1975
83e08001
MS		 1976 DEBUG_printf(("2httpRead2: Reading %d bytes into buffer.", (int)buflen));
1977
1978 do
1979 {
ef416fc2 1980#ifdef HAVE_SSL
83e08001
MS		 1981 if (http->tls)
1982 bytes = http_read_ssl(http, http->buffer, buflen);
1983 else
ef416fc2 1984#endif /* HAVE_SSL */
83e08001 1985 bytes = recv(http->fd, http->buffer, buflen, 0);
ef416fc2 1986
83e08001 1987 if (bytes < 0)
10d09e33 1988 {
83e08001
MS		 1989#ifdef WIN32
1990 if (WSAGetLastError() != WSAEINTR)
10d09e33 1991 {
83e08001 1992 http->error = WSAGetLastError();
10d09e33
MS		 1993 return (-1);
1994 }
83e08001
MS		 1995 else if (WSAGetLastError() == WSAEWOULDBLOCK)
1996 {
1997 if (!http->timeout_cb ||
1998 !(*http->timeout_cb)(http, http->timeout_data))
1999 {
2000 http->error = WSAEWOULDBLOCK;
2001 return (-1);
2002 }
2003 }
ef416fc2 2004#else
83e08001 2005 if (errno == EWOULDBLOCK || errno == EAGAIN)
10d09e33 2006 {
83e08001
MS		 2007 if (http->timeout_cb && !(*http->timeout_cb)(http, http->timeout_data))
2008 {
2009 http->error = errno;
2010 return (-1);
2011 }
2012 else if (!http->timeout_cb && errno != EAGAIN)
2013 {
2014 http->error = errno;
2015 return (-1);
2016 }
10d09e33 2017 }
83e08001 2018 else if (errno != EINTR)
10d09e33
MS		 2019 {
2020 http->error = errno;
2021 return (-1);
2022 }
ef416fc2 2023#endif /* WIN32 */
83e08001 2024 }
ef416fc2 2025 }
83e08001
MS		 2026 while (bytes < 0);
2027
12f89d24
MS		 2028 DEBUG_printf(("2httpRead2: Read " CUPS_LLFMT " bytes into buffer.",
2029 CUPS_LLCAST bytes));
2030#ifdef DEBUG
2031 http_debug_hex("httpRead2", http->buffer, (int)bytes);
2032#endif /* DEBUG */
83e08001
MS		 2033
2034 http->used = bytes;
ef416fc2 2035 }
2036
2037 if (http->used > 0)
2038 {
b86bc4cf 2039 if (length > (size_t)http->used)
2040 length = (size_t)http->used;
ef416fc2 2041
b86bc4cf 2042 bytes = (ssize_t)length;
ef416fc2 2043
e07d4801 2044 DEBUG_printf(("2httpRead2: grabbing %d bytes from input buffer...",
a603edef 2045 (int)bytes));
ef416fc2 2046
2047 memcpy(buffer, http->buffer, length);
b86bc4cf 2048 http->used -= (int)length;
ef416fc2 2049
2050 if (http->used > 0)
2051 memmove(http->buffer, http->buffer + length, http->used);
2052 }
2053#ifdef HAVE_SSL
2054 else if (http->tls)
2055 {
f228370c
MS		 2056 if (!http->blocking)
2057 {
85dda01c 2058 while (!httpWait(http, http->wait_value))
f228370c
MS		 2059 {
2060 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
2061 continue;
2062
2063 return (0);
2064 }
2065 }
ef416fc2 2066
83e08001
MS		 2067 while ((bytes = (ssize_t)http_read_ssl(http, buffer, (int)length)) < 0)
2068 {
2069#ifdef WIN32
2070 if (WSAGetLastError() == WSAEWOULDBLOCK)
2071 {
2072 if (!http->timeout_cb || !(*http->timeout_cb)(http, http->timeout_data))
2073 break;
2074 }
2075 else if (WSAGetLastError() != WSAEINTR)
2076 break;
2077#else
2078 if (errno == EWOULDBLOCK || errno == EAGAIN)
2079 {
2080 if (http->timeout_cb && !(*http->timeout_cb)(http, http->timeout_data))
2081 break;
2082 else if (!http->timeout_cb && errno != EAGAIN)
2083 break;
2084 }
2085 else if (errno != EINTR)
2086 break;
2087#endif /* WIN32 */
2088 }
ef416fc2 2089 }
2090#endif /* HAVE_SSL */
2091 else
2092 {
f228370c
MS		 2093 if (!http->blocking)
2094 {
85dda01c 2095 while (!httpWait(http, http->wait_value))
f228370c
MS		 2096 {
2097 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
2098 continue;
2099
2100 return (0);
2101 }
2102 }
ef416fc2 2103
e07d4801 2104 DEBUG_printf(("2httpRead2: reading " CUPS_LLFMT " bytes from socket...",
a603edef 2105 CUPS_LLCAST length));
ef416fc2 2106
b86bc4cf 2107#ifdef WIN32
10d09e33
MS		 2108 while ((bytes = (ssize_t)recv(http->fd, buffer, (int)length, 0)) < 0)
2109 {
2110 if (WSAGetLastError() == WSAEWOULDBLOCK)
2111 {
2112 if (!http->timeout_cb || !(*http->timeout_cb)(http, http->timeout_data))
2113 break;
2114 }
2115 else if (WSAGetLastError() != WSAEINTR)
cc754834 2116 break;
10d09e33 2117 }
b86bc4cf 2118#else
ef416fc2 2119 while ((bytes = recv(http->fd, buffer, length, 0)) < 0)
10d09e33
MS		 2120 {
2121 if (errno == EWOULDBLOCK || errno == EAGAIN)
2122 {
2123 if (http->timeout_cb && !(*http->timeout_cb)(http, http->timeout_data))
2124 break;
2125 else if (!http->timeout_cb && errno != EAGAIN)
2126 break;
2127 }
2128 else if (errno != EINTR)
ef416fc2 2129 break;
10d09e33 2130 }
b86bc4cf 2131#endif /* WIN32 */
ef416fc2 2132
e07d4801 2133 DEBUG_printf(("2httpRead2: read " CUPS_LLFMT " bytes from socket...",
a603edef 2134 CUPS_LLCAST bytes));
12f89d24
MS		 2135#ifdef DEBUG
2136 http_debug_hex("httpRead2", buffer, (int)bytes);
2137#endif /* DEBUG */
ef416fc2 2138 }
2139
2140 if (bytes > 0)
2141 {
2142 http->data_remaining -= bytes;
2143
2144 if (http->data_remaining <= INT_MAX)
2145 http->_data_remaining = (int)http->data_remaining;
2146 else
2147 http->_data_remaining = INT_MAX;
2148 }
2149 else if (bytes < 0)
2150 {
2151#ifdef WIN32
10d09e33 2152 if (WSAGetLastError() == WSAEINTR)
cc754834
MS		 2153 bytes = 0;
2154 else
2155 http->error = WSAGetLastError();
ef416fc2 2156#else
10d09e33 2157 if (errno == EINTR || (errno == EAGAIN && !http->timeout_cb))
ef416fc2 2158 bytes = 0;
2159 else
2160 http->error = errno;
2161#endif /* WIN32 */
2162 }
2163 else
2164 {
2165 http->error = EPIPE;
2166 return (0);
2167 }
2168
2169 if (http->data_remaining == 0)
2170 {
2171 if (http->data_encoding == HTTP_ENCODE_CHUNKED)
2172 httpGets(len, sizeof(len), http);
a29fd7dd
MS		 2173 else if (http->state == HTTP_POST_RECV)
2174 http->state ++;
2175 else
2176 http->state = HTTP_WAITING;
ef416fc2 2177 }
2178
ef416fc2 2179 return (bytes);
2180}
2181
2182
2183#if defined(HAVE_SSL) && defined(HAVE_CDSASSL)
2184/*
411affcf 2185 * '_httpReadCDSA()' - Read function for the CDSA library.
ef416fc2 2186 */
2187
2188OSStatus /* O - -1 on error, 0 on success */
2189_httpReadCDSA(
2190 SSLConnectionRef connection, /* I - SSL/TLS connection */
2191 void *data, /* I - Data buffer */
2192 size_t *dataLength) /* IO - Number of bytes */
2193{
411affcf 2194 OSStatus result; /* Return value */
2195 ssize_t bytes; /* Number of bytes read */
2196 http_t *http; /* HTTP connection */
2197
2198
2199 http = (http_t *)connection;
e53920b9 2200
411affcf 2201 if (!http->blocking)
2202 {
2203 /*
2204 * Make sure we have data before we read...
2205 */
e53920b9 2206
85dda01c 2207 while (!_httpWait(http, http->wait_value, 0))
411affcf 2208 {
f228370c
MS		 2209 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
2210 continue;
2211
411affcf 2212 http->error = ETIMEDOUT;
2213 return (-1);
2214 }
2215 }
ef416fc2 2216
b423cd4c 2217 do
411affcf 2218 {
2219 bytes = recv(http->fd, data, *dataLength, 0);
2220 }
e07d4801 2221 while (bytes == -1 && (errno == EINTR || errno == EAGAIN));
fa73b229 2222
b423cd4c 2223 if (bytes == *dataLength)
411affcf 2224 {
b423cd4c 2225 result = 0;
411affcf 2226 }
b423cd4c 2227 else if (bytes > 0)
2228 {
2229 *dataLength = bytes;
2230 result = errSSLWouldBlock;
2231 }
2232 else
2233 {
2234 *dataLength = 0;
fa73b229 2235
2236 if (bytes == 0)
ed486911 2237 result = errSSLClosedGraceful;
b423cd4c 2238 else if (errno == EAGAIN)
2239 result = errSSLWouldBlock;
b423cd4c 2240 else
ed486911 2241 result = errSSLClosedAbort;
ef416fc2 2242 }
b423cd4c 2243
411affcf 2244 return (result);
ef416fc2 2245}
2246#endif /* HAVE_SSL && HAVE_CDSASSL */
2247
2248
411affcf 2249#if defined(HAVE_SSL) && defined(HAVE_GNUTLS)
2250/*
2251 * '_httpReadGNUTLS()' - Read function for the GNU TLS library.
2252 */
2253
2254ssize_t /* O - Number of bytes read or -1 on error */
2255_httpReadGNUTLS(
568fa3fa 2256 gnutls_transport_ptr ptr, /* I - Connection to server */
411affcf 2257 void *data, /* I - Buffer */
2258 size_t length) /* I - Number of bytes to read */
2259{
2260 http_t *http; /* HTTP connection */
a4845881
MS		 2261 ssize_t bytes; /* Bytes read */
2262
411affcf 2263
a4845881 2264 DEBUG_printf(("6_httpReadGNUTLS(ptr=%p, data=%p, length=%d)", ptr, data, (int)length));
411affcf 2265
2266 http = (http_t *)ptr;
2267
2268 if (!http->blocking)
2269 {
2270 /*
2271 * Make sure we have data before we read...
2272 */
2273
85dda01c 2274 while (!_httpWait(http, http->wait_value, 0))
411affcf 2275 {
f228370c
MS		 2276 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
2277 continue;
2278
411affcf 2279 http->error = ETIMEDOUT;
2280 return (-1);
2281 }
2282 }
2283
a4845881
MS		 2284 bytes = recv(http->fd, data, length, 0);
2285 DEBUG_printf(("6_httpReadGNUTLS: bytes=%d", (int)bytes));
2286 return (bytes);
411affcf 2287}
2288#endif /* HAVE_SSL && HAVE_GNUTLS */
2289
2290
ef416fc2 2291/*
ecdc0628 2292 * 'httpReconnect()' - Reconnect to a HTTP server.
ef416fc2 2293 */
2294
2295int /* O - 0 on success, non-zero on failure */
568fa3fa 2296httpReconnect(http_t *http) /* I - Connection to server */
dcb445bc
MS		 2297{
2298 DEBUG_printf(("httpReconnect(http=%p)", http));
2299
12f89d24 2300 return (httpReconnect2(http, 30000, NULL));
dcb445bc
MS		 2301}
2302
2303
2304/*
2305 * 'httpReconnect2()' - Reconnect to a HTTP server with timeout and optional
2306 * cancel.
2307 */
2308
2309int /* O - 0 on success, non-zero on failure */
2310httpReconnect2(http_t *http, /* I - Connection to server */
2311 int msec, /* I - Timeout in milliseconds */
2312 int *cancel) /* I - Pointer to "cancel" variable */
ef416fc2 2313{
2314 http_addrlist_t *addr; /* Connected address */
1ff0402e
MS		 2315#ifdef DEBUG
2316 http_addrlist_t *current; /* Current address */
2317 char temp[256]; /* Temporary address string */
2318#endif /* DEBUG */
ef416fc2 2319
2320
12f89d24 2321 DEBUG_printf(("httpReconnect2(http=%p, msec=%d, cancel=%p)", http, msec,
dcb445bc 2322 cancel));
ef416fc2 2323
2324 if (!http)
dcb445bc
MS		 2325 {
2326 _cupsSetError(IPP_INTERNAL_ERROR, strerror(EINVAL), 0);
ef416fc2 2327 return (-1);
dcb445bc 2328 }
ef416fc2 2329
2330#ifdef HAVE_SSL
2331 if (http->tls)
1ff0402e 2332 {
12f89d24 2333 DEBUG_puts("2httpReconnect2: Shutting down SSL/TLS...");
ef416fc2 2334 http_shutdown_ssl(http);
1ff0402e 2335 }
ef416fc2 2336#endif /* HAVE_SSL */
2337
2338 /*
2339 * Close any previously open socket...
2340 */
2341
2342 if (http->fd >= 0)
bd7854cb 2343 {
12f89d24 2344 DEBUG_printf(("2httpReconnect2: Closing socket %d...", http->fd));
1ff0402e 2345
ef416fc2 2346#ifdef WIN32
2347 closesocket(http->fd);
2348#else
2349 close(http->fd);
2350#endif /* WIN32 */
2351
bd7854cb 2352 http->fd = -1;
2353 }
2354
a29fd7dd
MS		 2355 /*
2356 * Reset all state (except fields, which may be reused)...
2357 */
2358
2359 http->state = HTTP_WAITING;
2360 http->status = HTTP_CONTINUE;
2361 http->version = HTTP_1_1;
2362 http->keep_alive = HTTP_KEEPALIVE_OFF;
2363 memset(&http->_hostaddr, 0, sizeof(http->_hostaddr));
2364 http->data_encoding = HTTP_ENCODE_LENGTH;
2365 http->_data_remaining = 0;
2366 http->used = 0;
2367 http->expect = 0;
2368 http->data_remaining = 0;
2369 http->hostaddr = NULL;
2370 http->wused = 0;
2371
ef416fc2 2372 /*
2373 * Connect to the server...
2374 */
2375
1ff0402e
MS		 2376#ifdef DEBUG
2377 for (current = http->addrlist; current; current = current->next)
12f89d24 2378 DEBUG_printf(("2httpReconnect2: Address %s:%d",
1ff0402e
MS		 2379 httpAddrString(&(current->addr), temp, sizeof(temp)),
2380 _httpAddrPort(&(current->addr))));
2381#endif /* DEBUG */
2382
dcb445bc
MS		 2383 if ((addr = httpAddrConnect2(http->addrlist, &(http->fd), msec,
2384 cancel)) == NULL)
ef416fc2 2385 {
2386 /*
2387 * Unable to connect...
2388 */
2389
2390#ifdef WIN32
2391 http->error = WSAGetLastError();
2392#else
2393 http->error = errno;
2394#endif /* WIN32 */
2395 http->status = HTTP_ERROR;
2396
12f89d24 2397 DEBUG_printf(("1httpReconnect2: httpAddrConnect failed: %s",
1ff0402e
MS		 2398 strerror(http->error)));
2399
ef416fc2 2400 return (-1);
2401 }
2402
12f89d24 2403 DEBUG_printf(("2httpReconnect2: New socket=%d", http->fd));
1ff0402e 2404
85dda01c
MS		 2405 if (http->timeout_value > 0)
2406 http_set_timeout(http->fd, http->timeout_value);
10d09e33 2407
ef416fc2 2408 http->hostaddr = &(addr->addr);
2409 http->error = 0;
ef416fc2 2410
2411#ifdef HAVE_SSL
2412 if (http->encryption == HTTP_ENCRYPT_ALWAYS)
2413 {
2414 /*
2415 * Always do encryption via SSL.
2416 */
2417
2418 if (http_setup_ssl(http) != 0)
2419 {
f7deaa1a 2420# ifdef WIN32
ef416fc2 2421 closesocket(http->fd);
f7deaa1a 2422# else
ef416fc2 2423 close(http->fd);
f7deaa1a 2424# endif /* WIN32 */
ef416fc2 2425
2426 return (-1);
2427 }
2428 }
2429 else if (http->encryption == HTTP_ENCRYPT_REQUIRED)
2430 return (http_upgrade(http));
2431#endif /* HAVE_SSL */
2432
12f89d24 2433 DEBUG_printf(("1httpReconnect2: Connected to %s:%d...",
1ff0402e
MS		 2434 httpAddrString(http->hostaddr, temp, sizeof(temp)),
2435 _httpAddrPort(http->hostaddr)));
2436
ef416fc2 2437 return (0);
2438}
2439
2440
355e94dc
MS		 2441/*
2442 * 'httpSetAuthString()' - Set the current authorization string.
2443 *
2444 * This function just stores a copy of the current authorization string in
2445 * the HTTP connection object. You must still call httpSetField() to set
2446 * HTTP_FIELD_AUTHORIZATION prior to issuing a HTTP request using httpGet(),
2447 * httpHead(), httpOptions(), httpPost, or httpPut().
2448 *
f3c17241 2449 * @since CUPS 1.3/OS X 10.5@
355e94dc
MS		 2450 */
2451
2452void
568fa3fa 2453httpSetAuthString(http_t *http, /* I - Connection to server */
355e94dc
MS		 2454 const char *scheme, /* I - Auth scheme (NULL to clear it) */
2455 const char *data) /* I - Auth data (NULL for none) */
2456{
2457 /*
2458 * Range check input...
2459 */
2460
2461 if (!http)
2462 return;
2463
2464 if (http->authstring && http->authstring != http->_authstring)
2465 free(http->authstring);
2466
2467 http->authstring = http->_authstring;
2468
2469 if (scheme)
2470 {
2471 /*
2472 * Set the current authorization string...
2473 */
2474
2475 int len = (int)strlen(scheme) + (data ? (int)strlen(data) + 1 : 0) + 1;
91c84a35 2476 char *temp;
355e94dc
MS		 2477
2478 if (len > (int)sizeof(http->_authstring))
91c84a35
MS		 2479 {
2480 if ((temp = malloc(len)) == NULL)
2481 len = sizeof(http->_authstring);
2482 else
2483 http->authstring = temp;
2484 }
355e94dc
MS		 2485
2486 if (data)
2487 snprintf(http->authstring, len, "%s %s", scheme, data);
2488 else
2489 strlcpy(http->authstring, scheme, len);
2490 }
2491 else
2492 {
2493 /*
2494 * Clear the current authorization string...
2495 */
2496
2497 http->_authstring[0] = '\0';
2498 }
2499}
2500
2501
7cf5915e
MS		 2502/*
2503 * 'httpSetCredentials()' - Set the credentials associated with an encrypted
2504 * connection.
2505 *
f3c17241 2506 * @since CUPS 1.5/OS X 10.7@
7cf5915e
MS		 2507 */
2508
2509int /* O - Status of call (0 = success) */
2510httpSetCredentials(http_t *http, /* I - Connection to server */
2511 cups_array_t *credentials) /* I - Array of credentials */
2512{
2513 if (!http || cupsArrayCount(credentials) < 1)
2514 return (-1);
2515
2516 _httpFreeCredentials(http->tls_credentials);
2517
85dda01c 2518 http->tls_credentials = _httpCreateCredentials(credentials);
7cf5915e
MS		 2519
2520 return (http->tls_credentials ? 0 : -1);
2521}
2522
2523
ef416fc2 2524/*
6d2f911b 2525 * 'httpSetCookie()' - Set the cookie value(s).
ef416fc2 2526 *
f3c17241 2527 * @since CUPS 1.1.19/OS X 10.3@
ef416fc2 2528 */
2529
2530void
2531httpSetCookie(http_t *http, /* I - Connection */
2532 const char *cookie) /* I - Cookie string */
2533{
2534 if (!http)
2535 return;
2536
2537 if (http->cookie)
2538 free(http->cookie);
2539
2540 if (cookie)
2541 http->cookie = strdup(cookie);
2542 else
2543 http->cookie = NULL;
2544}
2545
2546
b423cd4c 2547/*
2548 * 'httpSetExpect()' - Set the Expect: header in a request.
2549 *
2550 * Currently only HTTP_CONTINUE is supported for the "expect" argument.
2551 *
f3c17241 2552 * @since CUPS 1.2/OS X 10.5@
b423cd4c 2553 */
2554
2555void
568fa3fa 2556httpSetExpect(http_t *http, /* I - Connection to server */
b423cd4c 2557 http_status_t expect) /* I - HTTP status to expect (HTTP_CONTINUE) */
2558{
2559 if (http)
2560 http->expect = expect;
2561}
2562
2563
ef416fc2 2564/*
2565 * 'httpSetField()' - Set the value of an HTTP header.
2566 */
2567
2568void
568fa3fa 2569httpSetField(http_t *http, /* I - Connection to server */
ef416fc2 2570 http_field_t field, /* I - Field index */
2571 const char *value) /* I - Value */
2572{
2573 if (http == NULL ||
2574 field < HTTP_FIELD_ACCEPT_LANGUAGE ||
2575 field > HTTP_FIELD_WWW_AUTHENTICATE ||
2576 value == NULL)
2577 return;
2578
2579 strlcpy(http->fields[field], value, HTTP_MAX_VALUE);
f7deaa1a 2580
f7deaa1a 2581 if (field == HTTP_FIELD_AUTHORIZATION)
2582 {
e07d4801
MS		 2583 /*
2584 * Special case for Authorization: as its contents can be
2585 * longer than HTTP_MAX_VALUE
2586 */
2587
f7deaa1a 2588 if (http->field_authorization)
2589 free(http->field_authorization);
2590
2591 http->field_authorization = strdup(value);
2592 }
e07d4801
MS		 2593 else if (field == HTTP_FIELD_HOST)
2594 {
2595 /*
f11a948a
MS		 2596 * Special-case for Host: as we don't want a trailing "." on the hostname and
2597 * need to bracket IPv6 numeric addresses.
e07d4801
MS		 2598 */
2599
178cb736
MS		 2600 char *ptr = strchr(value, ':');
2601
2602 if (value[0] != '[' && ptr && strchr(ptr + 1, ':'))
f11a948a
MS		 2603 {
2604 /*
2605 * Bracket IPv6 numeric addresses...
2606 *
2607 * This is slightly inefficient (basically copying twice), but is an edge
2608 * case and not worth optimizing...
2609 */
e07d4801 2610
f11a948a
MS		 2611 snprintf(http->fields[HTTP_FIELD_HOST],
2612 sizeof(http->fields[HTTP_FIELD_HOST]), "[%s]", value);
2613 }
2614 else
e07d4801 2615 {
f11a948a
MS		 2616 /*
2617 * Check for a trailing dot on the hostname...
2618 */
2619
178cb736 2620 ptr = http->fields[HTTP_FIELD_HOST];
f11a948a
MS		 2621
2622 if (*ptr)
2623 {
2624 ptr += strlen(ptr) - 1;
e07d4801 2625
f11a948a
MS		 2626 if (*ptr == '.')
2627 *ptr = '\0';
2628 }
e07d4801
MS		 2629 }
2630 }
ef416fc2 2631}
2632
2633
2634/*
2635 * 'httpSetLength()' - Set the content-length and content-encoding.
2636 *
f3c17241 2637 * @since CUPS 1.2/OS X 10.5@
ef416fc2 2638 */
2639
2640void
568fa3fa 2641httpSetLength(http_t *http, /* I - Connection to server */
ef416fc2 2642 size_t length) /* I - Length (0 for chunked) */
2643{
2644 if (!http)
2645 return;
2646
2647 if (!length)
2648 {
2649 strcpy(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked");
2650 http->fields[HTTP_FIELD_CONTENT_LENGTH][0] = '\0';
2651 }
2652 else
2653 {
2654 http->fields[HTTP_FIELD_TRANSFER_ENCODING][0] = '\0';
2655 snprintf(http->fields[HTTP_FIELD_CONTENT_LENGTH], HTTP_MAX_VALUE,
2656 CUPS_LLFMT, CUPS_LLCAST length);
2657 }
2658}
2659
2660
10d09e33 2661/*
f228370c 2662 * 'httpSetTimeout()' - Set read/write timeouts and an optional callback.
10d09e33
MS		 2663 *
2664 * The optional timeout callback receives both the HTTP connection and a user
f228370c
MS		 2665 * data pointer and must return 1 to continue or 0 to error (time) out.
2666 *
f3c17241 2667 * @since CUPS 1.5/OS X 10.7@
10d09e33
MS		 2668 */
2669
2670void
f228370c
MS		 2671httpSetTimeout(
2672 http_t *http, /* I - Connection to server */
2673 double timeout, /* I - Number of seconds for timeout,
10d09e33 2674 must be greater than 0 */
f228370c
MS		 2675 http_timeout_cb_t cb, /* I - Callback function or NULL */
2676 void *user_data) /* I - User data pointer */
10d09e33
MS		 2677{
2678 if (!http || timeout <= 0.0)
2679 return;
2680
85dda01c
MS		 2681 http->timeout_cb = cb;
2682 http->timeout_data = user_data;
2683 http->timeout_value = timeout;
10d09e33
MS		 2684
2685 if (http->fd >= 0)
85dda01c 2686 http_set_timeout(http->fd, timeout);
c8fef167 2687
85dda01c 2688 http_set_wait(http);
10d09e33
MS		 2689}
2690
2691
ef416fc2 2692/*
2693 * 'httpTrace()' - Send an TRACE request to the server.
2694 */
2695
2696int /* O - Status of call (0 = success) */
568fa3fa 2697httpTrace(http_t *http, /* I - Connection to server */
ef416fc2 2698 const char *uri) /* I - URI for trace */
2699{
2700 return (http_send(http, HTTP_TRACE, uri));
2701}
2702
2703
2704/*
e60ec91f
MS		 2705 * '_httpUpdate()' - Update the current HTTP status for incoming data.
2706 *
2707 * Note: Unlike httpUpdate(), this function does not flush pending write data
2708 * and only retrieves a single status line from the HTTP connection.
ef416fc2 2709 */
2710
e60ec91f
MS		 2711int /* O - 1 to continue, 0 to stop */
2712_httpUpdate(http_t *http, /* I - Connection to server */
2713 http_status_t *status) /* O - Current HTTP status */
ef416fc2 2714{
2715 char line[32768], /* Line from connection... */
2716 *value; /* Pointer to value on line */
2717 http_field_t field; /* Field index */
e60ec91f 2718 int major, minor; /* HTTP version numbers */
ef416fc2 2719
2720
e60ec91f 2721 DEBUG_printf(("_httpUpdate(http=%p, status=%p), state=%s", http, status,
f11a948a 2722 http_states[http->state]));
ef416fc2 2723
2724 /*
e60ec91f 2725 * Grab a single line from the connection...
ef416fc2 2726 */
2727
e60ec91f 2728 if (!httpGets(line, sizeof(line), http))
ef416fc2 2729 {
e60ec91f
MS		 2730 *status = HTTP_ERROR;
2731 return (0);
ef416fc2 2732 }
2733
e60ec91f 2734 DEBUG_printf(("2_httpUpdate: Got \"%s\"", line));
ef416fc2 2735
e60ec91f 2736 if (line[0] == '\0')
ef416fc2 2737 {
e60ec91f
MS		 2738 /*
2739 * Blank line means the start of the data section (if any). Return
2740 * the result code, too...
2741 *
2742 * If we get status 100 (HTTP_CONTINUE), then we *don't* change states.
2743 * Instead, we just return HTTP_CONTINUE to the caller and keep on
2744 * tryin'...
2745 */
ef416fc2 2746
e60ec91f 2747 if (http->status == HTTP_CONTINUE)
ef416fc2 2748 {
e60ec91f
MS		 2749 *status = http->status;
2750 return (0);
2751 }
ef416fc2 2752
e60ec91f
MS		 2753 if (http->status < HTTP_BAD_REQUEST)
2754 http->digest_tries = 0;
ef416fc2 2755
2756#ifdef HAVE_SSL
e60ec91f
MS		 2757 if (http->status == HTTP_SWITCHING_PROTOCOLS && !http->tls)
2758 {
2759 if (http_setup_ssl(http) != 0)
ef416fc2 2760 {
ef416fc2 2761# ifdef WIN32
e60ec91f 2762 closesocket(http->fd);
ef416fc2 2763# else
e60ec91f 2764 close(http->fd);
ef416fc2 2765# endif /* WIN32 */
2766
e60ec91f
MS		 2767 *status = http->status = HTTP_ERROR;
2768 return (0);
ef416fc2 2769 }
e60ec91f
MS		 2770
2771 *status = HTTP_CONTINUE;
2772 return (0);
2773 }
ef416fc2 2774#endif /* HAVE_SSL */
2775
e60ec91f 2776 httpGetLength2(http);
ef416fc2 2777
e60ec91f
MS		 2778 switch (http->state)
2779 {
2780 case HTTP_GET :
2781 case HTTP_POST :
2782 case HTTP_POST_RECV :
2783 case HTTP_PUT :
2784 http->state ++;
2785 case HTTP_POST_SEND :
2786 case HTTP_HEAD :
2787 break;
ef416fc2 2788
e60ec91f
MS		 2789 default :
2790 http->state = HTTP_WAITING;
2791 break;
ef416fc2 2792 }
e60ec91f
MS		 2793
2794 *status = http->status;
2795 return (0);
2796 }
2797 else if (!strncmp(line, "HTTP/", 5))
2798 {
2799 /*
2800 * Got the beginning of a response...
2801 */
2802
2803 int intstatus; /* Status value as an integer */
2804
2805 if (sscanf(line, "HTTP/%d.%d%d", &major, &minor, &intstatus) != 3)
2806 {
2807 *status = http->status = HTTP_ERROR;
2808 return (0);
2809 }
2810
2811 http->version = (http_version_t)(major * 100 + minor);
2812 *status = http->status = (http_status_t)intstatus;
2813 }
2814 else if ((value = strchr(line, ':')) != NULL)
2815 {
2816 /*
2817 * Got a value...
2818 */
2819
2820 *value++ = '\0';
2821 while (_cups_isspace(*value))
2822 value ++;
2823
2824 /*
2825 * Be tolerants of servers that send unknown attribute fields...
2826 */
2827
88f9aafc 2828 if (!_cups_strcasecmp(line, "expect"))
ef416fc2 2829 {
2830 /*
e60ec91f 2831 * "Expect: 100-continue" or similar...
ef416fc2 2832 */
2833
e60ec91f 2834 http->expect = (http_status_t)atoi(value);
ef416fc2 2835 }
88f9aafc 2836 else if (!_cups_strcasecmp(line, "cookie"))
ef416fc2 2837 {
2838 /*
e60ec91f 2839 * "Cookie: name=value[; name=value ...]" - replaces previous cookies...
ef416fc2 2840 */
2841
e60ec91f
MS		 2842 httpSetCookie(http, value);
2843 }
2844 else if ((field = http_field(line)) != HTTP_FIELD_UNKNOWN)
2845 httpSetField(http, field, value);
2846#ifdef DEBUG
2847 else
2848 DEBUG_printf(("1_httpUpdate: unknown field %s seen!", line));
2849#endif /* DEBUG */
2850 }
2851 else
2852 {
2853 DEBUG_printf(("1_httpUpdate: Bad response line \"%s\"!", line));
2854 *status = http->status = HTTP_ERROR;
2855 return (0);
2856 }
ef416fc2 2857
e60ec91f
MS		 2858 return (1);
2859}
ef416fc2 2860
ef416fc2 2861
e60ec91f
MS		 2862/*
2863 * 'httpUpdate()' - Update the current HTTP state for incoming data.
2864 */
ef416fc2 2865
e60ec91f
MS		 2866http_status_t /* O - HTTP status */
2867httpUpdate(http_t *http) /* I - Connection to server */
2868{
2869 http_status_t status; /* Request status */
2870
2871
2872 DEBUG_printf(("httpUpdate(http=%p), state=%s", http,
2873 http_states[http->state]));
2874
2875 /*
2876 * Flush pending data, if any...
2877 */
2878
2879 if (http->wused)
2880 {
2881 DEBUG_puts("2httpUpdate: flushing buffer...");
2882
2883 if (httpFlushWrite(http) < 0)
ef416fc2 2884 return (HTTP_ERROR);
ef416fc2 2885 }
2886
e60ec91f
MS		 2887 /*
2888 * If we haven't issued any commands, then there is nothing to "update"...
2889 */
2890
2891 if (http->state == HTTP_WAITING)
2892 return (HTTP_CONTINUE);
2893
2894 /*
2895 * Grab all of the lines we can from the connection...
2896 */
2897
2898 while (_httpUpdate(http, &status));
2899
ef416fc2 2900 /*
2901 * See if there was an error...
2902 */
2903
2904 if (http->error == EPIPE && http->status > HTTP_CONTINUE)
e07d4801
MS		 2905 {
2906 DEBUG_printf(("1httpUpdate: Returning status %d...", http->status));
ef416fc2 2907 return (http->status);
e07d4801 2908 }
ef416fc2 2909
2910 if (http->error)
2911 {
e07d4801 2912 DEBUG_printf(("1httpUpdate: socket error %d - %s", http->error,
ef416fc2 2913 strerror(http->error)));
2914 http->status = HTTP_ERROR;
2915 return (HTTP_ERROR);
2916 }
2917
2918 /*
e60ec91f 2919 * Return the current status...
ef416fc2 2920 */
2921
e60ec91f 2922 return (status);
ef416fc2 2923}
2924
2925
38e73f87
MS		 2926/*
2927 * '_httpWait()' - Wait for data available on a connection (no flush).
2928 */
2929
2930int /* O - 1 if data is available, 0 otherwise */
2931_httpWait(http_t *http, /* I - Connection to server */
2932 int msec, /* I - Milliseconds to wait */
2933 int usessl) /* I - Use SSL context? */
2934{
2935#ifdef HAVE_POLL
2936 struct pollfd pfd; /* Polled file descriptor */
2937#else
2938 fd_set input_set; /* select() input set */
2939 struct timeval timeout; /* Timeout */
2940#endif /* HAVE_POLL */
2941 int nfds; /* Result from select()/poll() */
2942
2943
e07d4801 2944 DEBUG_printf(("4_httpWait(http=%p, msec=%d, usessl=%d)", http, msec, usessl));
38e73f87
MS		 2945
2946 if (http->fd < 0)
f8b3a85b
MS		 2947 {
2948 DEBUG_printf(("5_httpWait: Returning 0 since fd=%d", http->fd));
38e73f87 2949 return (0);
f8b3a85b 2950 }
38e73f87
MS		 2951
2952 /*
2953 * Check the SSL/TLS buffers for data first...
2954 */
2955
2956#ifdef HAVE_SSL
2957 if (http->tls && usessl)
2958 {
2959# ifdef HAVE_LIBSSL
7cf5915e 2960 if (SSL_pending(http->tls))
f8b3a85b
MS		 2961 {
2962 DEBUG_puts("5_httpWait: Return 1 since there is pending SSL data.");
38e73f87 2963 return (1);
f8b3a85b
MS		 2964 }
2965
38e73f87 2966# elif defined(HAVE_GNUTLS)
7cf5915e 2967 if (gnutls_record_check_pending(http->tls))
f8b3a85b
MS		 2968 {
2969 DEBUG_puts("5_httpWait: Return 1 since there is pending SSL data.");
38e73f87 2970 return (1);
f8b3a85b
MS		 2971 }
2972
38e73f87
MS		 2973# elif defined(HAVE_CDSASSL)
2974 size_t bytes; /* Bytes that are available */
2975
7cf5915e 2976 if (!SSLGetBufferedReadSize(http->tls, &bytes) &&
38e73f87 2977 bytes > 0)
f8b3a85b
MS		 2978 {
2979 DEBUG_puts("5_httpWait: Return 1 since there is pending SSL data.");
38e73f87 2980 return (1);
f8b3a85b 2981 }
38e73f87
MS		 2982# endif /* HAVE_LIBSSL */
2983 }
2984#endif /* HAVE_SSL */
2985
2986 /*
2987 * Then try doing a select() or poll() to poll the socket...
2988 */
2989
2990#ifdef HAVE_POLL
2991 pfd.fd = http->fd;
2992 pfd.events = POLLIN;
2993
e07d4801
MS		 2994 while ((nfds = poll(&pfd, 1, msec)) < 0 &&
2995 (errno == EINTR || errno == EAGAIN));
38e73f87
MS		 2996
2997#else
2998 do
2999 {
3000 FD_ZERO(&input_set);
3001 FD_SET(http->fd, &input_set);
3002
e07d4801 3003 DEBUG_printf(("6_httpWait: msec=%d, http->fd=%d", msec, http->fd));
38e73f87
MS		 3004
3005 if (msec >= 0)
3006 {
3007 timeout.tv_sec = msec / 1000;
3008 timeout.tv_usec = (msec % 1000) * 1000;
3009
3010 nfds = select(http->fd + 1, &input_set, NULL, NULL, &timeout);
3011 }
3012 else
3013 nfds = select(http->fd + 1, &input_set, NULL, NULL, NULL);
3014
e07d4801 3015 DEBUG_printf(("6_httpWait: select() returned %d...", nfds));
38e73f87
MS		 3016 }
3017# ifdef WIN32
cc754834
MS		 3018 while (nfds < 0 && (WSAGetLastError() == WSAEINTR ||
3019 WSAGetLastError() == WSAEWOULDBLOCK));
38e73f87 3020# else
e07d4801 3021 while (nfds < 0 && (errno == EINTR || errno == EAGAIN));
38e73f87
MS		 3022# endif /* WIN32 */
3023#endif /* HAVE_POLL */
3024
f8b3a85b
MS		 3025 DEBUG_printf(("5_httpWait: returning with nfds=%d, errno=%d...", nfds,
3026 errno));
38e73f87
MS		 3027
3028 return (nfds > 0);
3029}
3030
3031
ef416fc2 3032/*
3033 * 'httpWait()' - Wait for data available on a connection.
3034 *
f3c17241 3035 * @since CUPS 1.1.19/OS X 10.3@
ef416fc2 3036 */
3037
3038int /* O - 1 if data is available, 0 otherwise */
568fa3fa 3039httpWait(http_t *http, /* I - Connection to server */
ef416fc2 3040 int msec) /* I - Milliseconds to wait */
3041{
3042 /*
3043 * First see if there is data in the buffer...
3044 */
3045
22c9029b
MS		 3046 DEBUG_printf(("2httpWait(http=%p, msec=%d)", http, msec));
3047
ef416fc2 3048 if (http == NULL)
3049 return (0);
3050
3051 if (http->used)
22c9029b
MS		 3052 {
3053 DEBUG_puts("3httpWait: Returning 1 since there is buffered data ready.");
ef416fc2 3054 return (1);
22c9029b 3055 }
ef416fc2 3056
8ca02f3c 3057 /*
3058 * Flush pending data, if any...
3059 */
3060
3061 if (http->wused)
3062 {
22c9029b
MS		 3063 DEBUG_puts("3httpWait: Flushing write buffer.");
3064
8ca02f3c 3065 if (httpFlushWrite(http) < 0)
3066 return (0);
3067 }
3068
ef416fc2 3069 /*
3070 * If not, check the SSL/TLS buffers and do a select() on the connection...
3071 */
3072
38e73f87 3073 return (_httpWait(http, msec, 1));
ef416fc2 3074}
3075
3076
3077/*
3078 * 'httpWrite()' - Write data to a HTTP connection.
a4d04587 3079 *
3080 * This function is deprecated. Use the httpWrite2() function which can
3081 * write more than 2GB of data.
3082 *
3083 * @deprecated@
ef416fc2 3084 */
ef55b745 3085
ef416fc2 3086int /* O - Number of bytes written */
568fa3fa 3087httpWrite(http_t *http, /* I - Connection to server */
ef416fc2 3088 const char *buffer, /* I - Buffer for data */
3089 int length) /* I - Number of bytes to write */
3090{
a4d04587 3091 return ((int)httpWrite2(http, buffer, length));
3092}
3093
3094
3095/*
3096 * 'httpWrite2()' - Write data to a HTTP connection.
ecdc0628 3097 *
f3c17241 3098 * @since CUPS 1.2/OS X 10.5@
a4d04587 3099 */
ef55b745 3100
a4d04587 3101ssize_t /* O - Number of bytes written */
568fa3fa 3102httpWrite2(http_t *http, /* I - Connection to server */
a4d04587 3103 const char *buffer, /* I - Buffer for data */
3104 size_t length) /* I - Number of bytes to write */
3105{
3106 ssize_t bytes; /* Bytes written */
ef416fc2 3107
3108
e07d4801 3109 DEBUG_printf(("httpWrite2(http=%p, buffer=%p, length=" CUPS_LLFMT ")", http,
a603edef 3110 buffer, CUPS_LLCAST length));
ef416fc2 3111
3112 /*
3113 * Range check input...
3114 */
3115
3116 if (http == NULL || buffer == NULL)
3117 return (-1);
3118
3119 /*
3120 * Mark activity on the connection...
3121 */
3122
3123 http->activity = time(NULL);
3124
3125 /*
3126 * Buffer small writes for better performance...
3127 */
3128
3129 if (length > 0)
3130 {
3131 if (http->wused && (length + http->wused) > sizeof(http->wbuffer))
3132 {
e07d4801
MS		 3133 DEBUG_printf(("2httpWrite2: Flushing buffer (wused=%d, length="
3134 CUPS_LLFMT ")", http->wused, CUPS_LLCAST length));
ef416fc2 3135
3136 httpFlushWrite(http);
3137 }
3138
38e73f87
MS		 3139 if ((length + http->wused) <= sizeof(http->wbuffer) &&
3140 length < sizeof(http->wbuffer))
ef416fc2 3141 {
3142 /*
3143 * Write to buffer...
3144 */
3145
e07d4801 3146 DEBUG_printf(("2httpWrite2: Copying " CUPS_LLFMT " bytes to wbuffer...",
a603edef 3147 CUPS_LLCAST length));
ef416fc2 3148
3149 memcpy(http->wbuffer + http->wused, buffer, length);
b86bc4cf 3150 http->wused += (int)length;
3151 bytes = (ssize_t)length;
ef416fc2 3152 }
3153 else
3154 {
3155 /*
3156 * Otherwise write the data directly...
3157 */
3158
e07d4801 3159 DEBUG_printf(("2httpWrite2: Writing " CUPS_LLFMT " bytes to socket...",
a603edef 3160 CUPS_LLCAST length));
ef416fc2 3161
3162 if (http->data_encoding == HTTP_ENCODE_CHUNKED)
b86bc4cf 3163 bytes = (ssize_t)http_write_chunk(http, buffer, (int)length);
ef416fc2 3164 else
b86bc4cf 3165 bytes = (ssize_t)http_write(http, buffer, (int)length);
ef416fc2 3166
e07d4801 3167 DEBUG_printf(("2httpWrite2: Wrote " CUPS_LLFMT " bytes...",
ae71f5de 3168 CUPS_LLCAST bytes));
ef416fc2 3169 }
3170
3171 if (http->data_encoding == HTTP_ENCODE_LENGTH)
3172 http->data_remaining -= bytes;
3173 }
3174 else
3175 bytes = 0;
3176
3177 /*
3178 * Handle end-of-request processing...
3179 */
3180
3181 if ((http->data_encoding == HTTP_ENCODE_CHUNKED && length == 0) ||
3182 (http->data_encoding == HTTP_ENCODE_LENGTH && http->data_remaining == 0))
3183 {
3184 /*
3185 * Finished with the transfer; unless we are sending POST or PUT
3186 * data, go idle...
3187 */
3188
e07d4801 3189 DEBUG_puts("2httpWrite: changing states...");
ef416fc2 3190
3191 if (http->wused)
3192 httpFlushWrite(http);
3193
3194 if (http->data_encoding == HTTP_ENCODE_CHUNKED)
3195 {
3196 /*
3197 * Send a 0-length chunk at the end of the request...
3198 */
3199
3200 http_write(http, "0\r\n\r\n", 5);
3201
3202 /*
3203 * Reset the data state...
3204 */
3205
3206 http->data_encoding = HTTP_ENCODE_LENGTH;
3207 http->data_remaining = 0;
3208 }
ef416fc2 3209 }
3210
3211 return (bytes);
3212}
3213
3214
3215#if defined(HAVE_SSL) && defined(HAVE_CDSASSL)
3216/*
411affcf 3217 * '_httpWriteCDSA()' - Write function for the CDSA library.
ef416fc2 3218 */
3219
3220OSStatus /* O - -1 on error, 0 on success */
3221_httpWriteCDSA(
3222 SSLConnectionRef connection, /* I - SSL/TLS connection */
3223 const void *data, /* I - Data buffer */
3224 size_t *dataLength) /* IO - Number of bytes */
3225{
411affcf 3226 OSStatus result; /* Return value */
3227 ssize_t bytes; /* Number of bytes read */
3228 http_t *http; /* HTTP connection */
e53920b9 3229
3230
411affcf 3231 http = (http_t *)connection;
ef416fc2 3232
b423cd4c 3233 do
411affcf 3234 {
3235 bytes = write(http->fd, data, *dataLength);
3236 }
e07d4801 3237 while (bytes == -1 && (errno == EINTR || errno == EAGAIN));
fa73b229 3238
b423cd4c 3239 if (bytes == *dataLength)
411affcf 3240 {
b423cd4c 3241 result = 0;
411affcf 3242 }
b423cd4c 3243 else if (bytes >= 0)
3244 {
3245 *dataLength = bytes;
3246 result = errSSLWouldBlock;
3247 }
3248 else
3249 {
3250 *dataLength = 0;
ef55b745 3251
fa73b229 3252 if (errno == EAGAIN)
b423cd4c 3253 result = errSSLWouldBlock;
b423cd4c 3254 else
ed486911 3255 result = errSSLClosedAbort;
ef416fc2 3256 }
b423cd4c 3257
411affcf 3258 return (result);
ef416fc2 3259}
3260#endif /* HAVE_SSL && HAVE_CDSASSL */
3261
3262
411affcf 3263#if defined(HAVE_SSL) && defined(HAVE_GNUTLS)
3264/*
3265 * '_httpWriteGNUTLS()' - Write function for the GNU TLS library.
3266 */
3267
3268ssize_t /* O - Number of bytes written or -1 on error */
3269_httpWriteGNUTLS(
568fa3fa 3270 gnutls_transport_ptr ptr, /* I - Connection to server */
411affcf 3271 const void *data, /* I - Data buffer */
3272 size_t length) /* I - Number of bytes to write */
3273{
a4845881
MS		 3274 ssize_t bytes; /* Bytes written */
3275
3276
3277 DEBUG_printf(("6_httpWriteGNUTLS(ptr=%p, data=%p, length=%d)", ptr, data,
3278 (int)length));
a2326b5b 3279#ifdef DEBUG
a4845881 3280 http_debug_hex("_httpWriteGNUTLS", data, (int)length);
a2326b5b 3281#endif /* DEBUG */
a4845881
MS		 3282
3283 bytes = send(((http_t *)ptr)->fd, data, length, 0);
3284 DEBUG_printf(("_httpWriteGNUTLS: bytes=%d", (int)bytes));
a2326b5b 3285
a4845881 3286 return (bytes);
411affcf 3287}
3288#endif /* HAVE_SSL && HAVE_GNUTLS */
3289
3290
3291#if defined(HAVE_SSL) && defined(HAVE_LIBSSL)
3292/*
3293 * 'http_bio_ctrl()' - Control the HTTP connection.
3294 */
3295
3296static long /* O - Result/data */
3297http_bio_ctrl(BIO *h, /* I - BIO data */
3298 int cmd, /* I - Control command */
3299 long arg1, /* I - First argument */
3300 void *arg2) /* I - Second argument */
3301{
3302 switch (cmd)
3303 {
3304 default :
3305 return (0);
3306
3307 case BIO_CTRL_RESET :
3308 h->ptr = NULL;
3309 return (0);
3310
3311 case BIO_C_SET_FILE_PTR :
3312 h->ptr = arg2;
3313 h->init = 1;
3314 return (1);
3315
3316 case BIO_C_GET_FILE_PTR :
3317 if (arg2)
3318 {
3319 *((void **)arg2) = h->ptr;
3320 return (1);
3321 }
3322 else
3323 return (0);
ef55b745 3324
411affcf 3325 case BIO_CTRL_DUP :
3326 case BIO_CTRL_FLUSH :
3327 return (1);
3328 }
3329}
3330
3331
3332/*
3333 * 'http_bio_free()' - Free OpenSSL data.
3334 */
3335
3336static int /* O - 1 on success, 0 on failure */
3337http_bio_free(BIO *h) /* I - BIO data */
3338{
3339 if (!h)
3340 return (0);
3341
3342 if (h->shutdown)
3343 {
3344 h->init = 0;
3345 h->flags = 0;
3346 }
3347
3348 return (1);
3349}
3350
3351
3352/*
3353 * 'http_bio_new()' - Initialize an OpenSSL BIO structure.
3354 */
3355
3356static int /* O - 1 on success, 0 on failure */
3357http_bio_new(BIO *h) /* I - BIO data */
3358{
3359 if (!h)
3360 return (0);
3361
3362 h->init = 0;
3363 h->num = 0;
3364 h->ptr = NULL;
3365 h->flags = 0;
3366
3367 return (1);
3368}
3369
3370
3371/*
3372 * 'http_bio_puts()' - Send a string for OpenSSL.
3373 */
3374
3375static int /* O - Bytes written */
3376http_bio_puts(BIO *h, /* I - BIO data */
3377 const char *str) /* I - String to write */
3378{
b86bc4cf 3379#ifdef WIN32
3380 return (send(((http_t *)h->ptr)->fd, str, (int)strlen(str), 0));
3381#else
411affcf 3382 return (send(((http_t *)h->ptr)->fd, str, strlen(str), 0));
b86bc4cf 3383#endif /* WIN32 */
411affcf 3384}
3385
3386
3387/*
3388 * 'http_bio_read()' - Read data for OpenSSL.
3389 */
3390
3391static int /* O - Bytes read */
3392http_bio_read(BIO *h, /* I - BIO data */
3393 char *buf, /* I - Buffer */
3394 int size) /* I - Number of bytes to read */
3395{
3396 http_t *http; /* HTTP connection */
3397
3398
3399 http = (http_t *)h->ptr;
3400
3401 if (!http->blocking)
3402 {
3403 /*
3404 * Make sure we have data before we read...
3405 */
3406
85dda01c 3407 while (!_httpWait(http, http->wait_value, 0))
411affcf 3408 {
f228370c
MS		 3409 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
3410 continue;
3411
b86bc4cf 3412#ifdef WIN32
3413 http->error = WSAETIMEDOUT;
3414#else
411affcf 3415 http->error = ETIMEDOUT;
b86bc4cf 3416#endif /* WIN32 */
3417
411affcf 3418 return (-1);
3419 }
3420 }
3421
3422 return (recv(http->fd, buf, size, 0));
3423}
3424
3425
3426/*
3427 * 'http_bio_write()' - Write data for OpenSSL.
3428 */
3429
3430static int /* O - Bytes written */
3431http_bio_write(BIO *h, /* I - BIO data */
3432 const char *buf, /* I - Buffer to write */
3433 int num) /* I - Number of bytes to write */
3434{
3435 return (send(((http_t *)h->ptr)->fd, buf, num, 0));
3436}
3437#endif /* HAVE_SSL && HAVE_LIBSSL */
3438
3439
ae71f5de
MS		 3440#ifdef DEBUG
3441/*
3442 * 'http_debug_hex()' - Do a hex dump of a buffer.
3443 */
3444
3445static void
3446http_debug_hex(const char *prefix, /* I - Prefix for line */
3447 const char *buffer, /* I - Buffer to dump */
3448 int bytes) /* I - Bytes to dump */
3449{
3450 int i, j, /* Looping vars */
3451 ch; /* Current character */
3452 char line[255], /* Line buffer */
3453 *start, /* Start of line after prefix */
3454 *ptr; /* Pointer into line */
3455
3456
f11a948a 3457 if (_cups_debug_fd < 0 || _cups_debug_level < 6)
dd1abb6b
MS		 3458 return;
3459
83e08001 3460 DEBUG_printf(("6%s: %d bytes:", prefix, bytes));
ae71f5de 3461
f11a948a 3462 snprintf(line, sizeof(line), "6%s: ", prefix);
ae71f5de
MS		 3463 start = line + strlen(line);
3464
3465 for (i = 0; i < bytes; i += 16)
3466 {
3467 for (j = 0, ptr = start; j < 16 && (i + j) < bytes; j ++, ptr += 2)
3468 sprintf(ptr, "%02X", buffer[i + j] & 255);
3469
3470 while (j < 16)
3471 {
3472 strcpy(ptr, " ");
3473 ptr += 2;
3474 j ++;
3475 }
3476
3477 strcpy(ptr, " ");
3478 ptr += 2;
3479
3480 for (j = 0; j < 16 && (i + j) < bytes; j ++)
3481 {
3482 ch = buffer[i + j] & 255;
3483
3484 if (ch < ' ' || ch >= 127)
3485 ch = '.';
3486
3487 *ptr++ = ch;
3488 }
3489
3490 *ptr = '\0';
3491 DEBUG_puts(line);
3492 }
3493}
3494#endif /* DEBUG */
3495
3496
ef416fc2 3497/*
3498 * 'http_field()' - Return the field index for a field name.
3499 */
3500
ae71f5de
MS		 3501static http_field_t /* O - Field index */
3502http_field(const char *name) /* I - String name */
ef416fc2 3503{
ae71f5de 3504 int i; /* Looping var */
ef416fc2 3505
3506
3507 for (i = 0; i < HTTP_FIELD_MAX; i ++)
88f9aafc 3508 if (_cups_strcasecmp(name, http_fields[i]) == 0)
ef416fc2 3509 return ((http_field_t)i);
3510
3511 return (HTTP_FIELD_UNKNOWN);
3512}
3513
3514
3515#ifdef HAVE_SSL
3516/*
3517 * 'http_read_ssl()' - Read from a SSL/TLS connection.
3518 */
3519
3520static int /* O - Bytes read */
568fa3fa 3521http_read_ssl(http_t *http, /* I - Connection to server */
ef416fc2 3522 char *buf, /* I - Buffer to store data */
3523 int len) /* I - Length of buffer */
3524{
3525# if defined(HAVE_LIBSSL)
3526 return (SSL_read((SSL *)(http->tls), buf, len));
3527
3528# elif defined(HAVE_GNUTLS)
ef55b745
MS		 3529 ssize_t result; /* Return value */
3530
3531
7cf5915e 3532 result = gnutls_record_recv(http->tls, buf, len);
ef55b745
MS		 3533
3534 if (result < 0 && !errno)
3535 {
3536 /*
3537 * Convert GNU TLS error to errno value...
3538 */
3539
3540 switch (result)
3541 {
3542 case GNUTLS_E_INTERRUPTED :
3543 errno = EINTR;
3544 break;
3545
3546 case GNUTLS_E_AGAIN :
3547 errno = EAGAIN;
3548 break;
3549
3550 default :
3551 errno = EPIPE;
3552 break;
3553 }
3554
3555 result = -1;
3556 }
3557
3558 return ((int)result);
ef416fc2 3559
3560# elif defined(HAVE_CDSASSL)
fa73b229 3561 int result; /* Return value */
ef416fc2 3562 OSStatus error; /* Error info */
3563 size_t processed; /* Number of bytes processed */
3564
3565
7cf5915e 3566 error = SSLRead(http->tls, buf, len, &processed);
83e08001
MS		 3567 DEBUG_printf(("6http_read_ssl: error=%d, processed=%d", (int)error,
3568 (int)processed));
fa73b229 3569 switch (error)
ef416fc2 3570 {
fa73b229 3571 case 0 :
3572 result = (int)processed;
3573 break;
84315f46 3574
fa73b229 3575 case errSSLWouldBlock :
b423cd4c 3576 if (processed)
3577 result = (int)processed;
3578 else
3579 {
3580 result = -1;
83e08001 3581 errno = EINTR;
b423cd4c 3582 }
fa73b229 3583 break;
84315f46
MS		 3584
3585 case errSSLClosedGraceful :
fa73b229 3586 default :
84315f46
MS		 3587 if (processed)
3588 result = (int)processed;
3589 else
3590 {
3591 result = -1;
83e08001 3592 errno = EPIPE;
84315f46 3593 }
fa73b229 3594 break;
ef416fc2 3595 }
fa73b229 3596
3597 return (result);
83e08001 3598
cc754834
MS		 3599# elif defined(HAVE_SSPISSL)
3600 return _sspiRead((_sspi_struct_t*) http->tls, buf, len);
ef416fc2 3601# endif /* HAVE_LIBSSL */
3602}
3603#endif /* HAVE_SSL */
3604
3605
3606/*
3607 * 'http_send()' - Send a request with all fields and the trailing blank line.
3608 */
3609
3610static int /* O - 0 on success, non-zero on error */
568fa3fa 3611http_send(http_t *http, /* I - Connection to server */
ef416fc2 3612 http_state_t request, /* I - Request code */
3613 const char *uri) /* I - URI */
3614{
3615 int i; /* Looping var */
839a51c8 3616 char buf[1024]; /* Encoded URI buffer */
ef416fc2 3617 static const char * const codes[] =
3618 { /* Request code strings */
3619 NULL,
3620 "OPTIONS",
3621 "GET",
3622 NULL,
3623 "HEAD",
3624 "POST",
3625 NULL,
3626 NULL,
3627 "PUT",
3628 NULL,
3629 "DELETE",
3630 "TRACE",
3631 "CLOSE"
3632 };
ef416fc2 3633
3634
e07d4801 3635 DEBUG_printf(("7http_send(http=%p, request=HTTP_%s, uri=\"%s\")",
ef416fc2 3636 http, codes[request], uri));
3637
3638 if (http == NULL || uri == NULL)
3639 return (-1);
3640
3641 /*
3642 * Set the User-Agent field if it isn't already...
3643 */
3644
3645 if (!http->fields[HTTP_FIELD_USER_AGENT][0])
3646 httpSetField(http, HTTP_FIELD_USER_AGENT, CUPS_MINIMAL);
3647
3648 /*
3649 * Encode the URI as needed...
3650 */
3651
839a51c8 3652 _httpEncodeURI(buf, uri, sizeof(buf));
ef416fc2 3653
3654 /*
3655 * See if we had an error the last time around; if so, reconnect...
3656 */
3657
3658 if (http->status == HTTP_ERROR || http->status >= HTTP_BAD_REQUEST)
fa73b229 3659 if (httpReconnect(http))
3660 return (-1);
ef416fc2 3661
d09495fa 3662 /*
3663 * Flush any written data that is pending...
3664 */
3665
3666 if (http->wused)
536bc2c6
MS		 3667 {
3668 if (httpFlushWrite(http) < 0)
3669 if (httpReconnect(http))
3670 return (-1);
3671 }
d09495fa 3672
ef416fc2 3673 /*
3674 * Send the request header...
3675 */
3676
d09495fa 3677 http->state = request;
3678 http->data_encoding = HTTP_ENCODE_FIELDS;
3679
ef416fc2 3680 if (request == HTTP_POST || request == HTTP_PUT)
3681 http->state ++;
3682
3683 http->status = HTTP_CONTINUE;
3684
3685#ifdef HAVE_SSL
3686 if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls)
3687 {
3688 httpSetField(http, HTTP_FIELD_CONNECTION, "Upgrade");
3689 httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.0,SSL/2.0,SSL/3.0");
3690 }
3691#endif /* HAVE_SSL */
3692
3693 if (httpPrintf(http, "%s %s HTTP/1.1\r\n", codes[request], buf) < 1)
3694 {
3695 http->status = HTTP_ERROR;
3696 return (-1);
3697 }
3698
3699 for (i = 0; i < HTTP_FIELD_MAX; i ++)
3700 if (http->fields[i][0] != '\0')
3701 {
e07d4801 3702 DEBUG_printf(("9http_send: %s: %s", http_fields[i],
ae71f5de 3703 httpGetField(http, i)));
ef416fc2 3704
ef55b745 3705 if (httpPrintf(http, "%s: %s\r\n", http_fields[i],
f7deaa1a 3706 httpGetField(http, i)) < 1)
ef416fc2 3707 {
3708 http->status = HTTP_ERROR;
3709 return (-1);
3710 }
3711 }
3712
3713 if (http->cookie)
3714 if (httpPrintf(http, "Cookie: $Version=0; %s\r\n", http->cookie) < 1)
3715 {
3716 http->status = HTTP_ERROR;
3717 return (-1);
3718 }
3719
b423cd4c 3720 if (http->expect == HTTP_CONTINUE &&
3721 (http->state == HTTP_POST_RECV || http->state == HTTP_PUT_RECV))
3722 if (httpPrintf(http, "Expect: 100-continue\r\n") < 1)
3723 {
3724 http->status = HTTP_ERROR;
3725 return (-1);
3726 }
3727
ef416fc2 3728 if (httpPrintf(http, "\r\n") < 1)
3729 {
3730 http->status = HTTP_ERROR;
3731 return (-1);
3732 }
3733
536bc2c6
MS		 3734 if (httpFlushWrite(http) < 0)
3735 return (-1);
3736
ef416fc2 3737 httpGetLength2(http);
3738 httpClearFields(http);
3739
f7deaa1a 3740 /*
b94498cf 3741 * The Kerberos and AuthRef authentication strings can only be used once...
f7deaa1a 3742 */
3743
ef55b745
MS		 3744 if (http->field_authorization && http->authstring &&
3745 (!strncmp(http->authstring, "Negotiate", 9) ||
b94498cf 3746 !strncmp(http->authstring, "AuthRef", 7)))
f7deaa1a 3747 {
3748 http->_authstring[0] = '\0';
3749
3750 if (http->authstring != http->_authstring)
3751 free(http->authstring);
ef55b745 3752
f7deaa1a 3753 http->authstring = http->_authstring;
3754 }
3755
ef416fc2 3756 return (0);
3757}
3758
3759
3760#ifdef HAVE_SSL
82f97232 3761# if defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
7cf5915e
MS		 3762/*
3763 * 'http_set_credentials()' - Set the SSL/TLS credentials.
3764 */
3765
3766static int /* O - Status of connection */
3767http_set_credentials(http_t *http) /* I - Connection to server */
3768{
3769 _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */
7cf5915e
MS		 3770 OSStatus error = 0; /* Error code */
3771 http_tls_credentials_t credentials = NULL;
3772 /* TLS credentials */
7cf5915e
MS		 3773
3774
3775 DEBUG_printf(("7http_set_credentials(%p)", http));
3776
7cf5915e
MS		 3777 /*
3778 * Prefer connection specific credentials...
3779 */
3780
3781 if ((credentials = http->tls_credentials) == NULL)
3782 credentials = cg->tls_credentials;
3783
3784# if HAVE_SECPOLICYCREATESSL
3785 /*
3786 * Otherwise root around in the user's keychain to see if one can be found...
3787 */
3788
3789 if (!credentials)
3790 {
3791 CFDictionaryRef query; /* Query dictionary */
3792 CFTypeRef matches = NULL; /* Matching credentials */
3793 CFArrayRef dn_array = NULL;/* Distinguished names array */
3794 CFTypeRef keys[] = { kSecClass,
3795 kSecMatchLimit,
3796 kSecReturnRef };
3797 /* Keys for dictionary */
3798 CFTypeRef values[] = { kSecClassCertificate,
3799 kSecMatchLimitOne,
3800 kCFBooleanTrue };
3801 /* Values for dictionary */
3802
3803 /*
3804 * Get the names associated with the server.
3805 */
3806
3807 if ((error = SSLCopyDistinguishedNames(http->tls, &dn_array)) != noErr)
3808 {
3809 DEBUG_printf(("4http_set_credentials: SSLCopyDistinguishedNames, error=%d",
3810 (int)error));
3811 return (error);
3812 }
3813
3814 /*
3815 * Create a query which will return all identities that can sign and match
3816 * the passed in policy.
3817 */
3818
3819 query = CFDictionaryCreate(NULL,
3820 (const void**)(&keys[0]),
3821 (const void**)(&values[0]),
3822 sizeof(keys) / sizeof(keys[0]),
3823 &kCFTypeDictionaryKeyCallBacks,
3824 &kCFTypeDictionaryValueCallBacks);
3825 if (query)
3826 {
3827 error = SecItemCopyMatching(query, &matches);
3828 DEBUG_printf(("4http_set_credentials: SecItemCopyMatching, error=%d",
3829 (int)error));
3830 CFRelease(query);
3831 }
3832
3833 if (matches)
3834 CFRelease(matches);
3835
3836 if (dn_array)
3837 CFRelease(dn_array);
3838 }
3839# endif /* HAVE_SECPOLICYCREATESSL */
3840
3841 if (credentials)
3842 {
3843 error = SSLSetCertificate(http->tls, credentials);
3844 DEBUG_printf(("4http_set_credentials: SSLSetCertificate, error=%d",
3845 (int)error));
3846 }
3847 else
3848 DEBUG_puts("4http_set_credentials: No credentials to set.");
3849
3850 return (error);
7cf5915e 3851}
82f97232 3852# endif /* HAVE_CDSASSL && HAVE_SECCERTIFICATECOPYDATA */
9b66acc5 3853#endif /* HAVE_SSL */
7cf5915e
MS		 3854
3855
85dda01c
MS		 3856/*
3857 * 'http_set_timeout()' - Set the socket timeout values.
3858 */
3859
3860static void
3861http_set_timeout(int fd, /* I - File descriptor */
3862 double timeout) /* I - Timeout in seconds */
3863{
3864#ifdef WIN32
3865 DWORD tv = (DWORD)(timeout * 1000);
3866 /* Timeout in milliseconds */
3867
3868 setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv, sizeof(tv));
3869 setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, (char *)&tv, sizeof(tv));
3870
3871#else
3872 struct timeval tv; /* Timeout in secs and usecs */
3873
3874 tv.tv_sec = (int)timeout;
3875 tv.tv_usec = (int)(1000000 * fmod(timeout, 1.0));
3876
3877 setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
3878 setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv));
3879#endif /* WIN32 */
3880}
3881
3882
3883/*
3884 * 'http_set_wait()' - Set the default wait value for reads.
3885 */
3886
3887static void
3888http_set_wait(http_t *http) /* I - Connection to server */
3889{
3890 if (http->blocking)
3891 {
3892 http->wait_value = (int)(http->timeout_value * 1000);
3893
3894 if (http->wait_value <= 0)
3895 http->wait_value = 60000;
3896 }
3897 else
3898 http->wait_value = 10000;
3899}
3900
3901
9b66acc5 3902#ifdef HAVE_SSL
ef416fc2 3903/*
3904 * 'http_setup_ssl()' - Set up SSL/TLS support on a connection.
3905 */
3906
a4845881 3907static int /* O - 0 on success, -1 on failure */
568fa3fa 3908http_setup_ssl(http_t *http) /* I - Connection to server */
ef416fc2 3909{
7cf5915e
MS		 3910 _cups_globals_t *cg = _cupsGlobals();
3911 /* Pointer to library globals */
3912 int any_root; /* Allow any root */
12f89d24
MS		 3913 char hostname[256], /* Hostname */
3914 *hostptr; /* Pointer into hostname */
7cf5915e 3915
ef416fc2 3916# ifdef HAVE_LIBSSL
a4845881
MS		 3917 SSL_CTX *context; /* Context for encryption */
3918 BIO *bio; /* BIO data */
3919 const char *message = NULL;/* Error message */
ef416fc2 3920# elif defined(HAVE_GNUTLS)
a4845881 3921 int status; /* Status of handshake */
ef416fc2 3922 gnutls_certificate_client_credentials *credentials;
89d46774 3923 /* TLS credentials */
ef416fc2 3924# elif defined(HAVE_CDSASSL)
a4845881 3925 OSStatus error; /* Error code */
a4845881 3926 const char *message = NULL;/* Error message */
82f97232 3927# ifdef HAVE_SECCERTIFICATECOPYDATA
a4845881
MS		 3928 cups_array_t *credentials; /* Credentials array */
3929 cups_array_t *names; /* CUPS distinguished names */
3930 CFArrayRef dn_array; /* CF distinguished names array */
3931 CFIndex count; /* Number of credentials */
3932 CFDataRef data; /* Certificate data */
3933 int i; /* Looping var */
3934 http_credential_t *credential; /* Credential data */
82f97232 3935# endif /* HAVE_SECCERTIFICATECOPYDATA */
cc754834 3936# elif defined(HAVE_SSPISSL)
a4845881
MS		 3937 TCHAR username[256]; /* Username returned from GetUserName() */
3938 TCHAR commonName[256];/* Common name for certificate */
3939 DWORD dwSize; /* 32 bit size */
ef416fc2 3940# endif /* HAVE_LIBSSL */
3941
3942
e07d4801 3943 DEBUG_printf(("7http_setup_ssl(http=%p)", http));
ef416fc2 3944
7cf5915e
MS		 3945 /*
3946 * Always allow self-signed certificates for the local loopback address...
3947 */
3948
3949 if (httpAddrLocalhost(http->hostaddr))
12f89d24 3950 {
7cf5915e 3951 any_root = 1;
12f89d24
MS		 3952 strlcpy(hostname, "localhost", sizeof(hostname));
3953 }
7cf5915e 3954 else
12f89d24
MS		 3955 {
3956 /*
3957 * Otherwise use the system-wide setting and make sure the hostname we have
3958 * does not end in a trailing dot.
3959 */
3960
7cf5915e
MS		 3961 any_root = cg->any_root;
3962
12f89d24
MS		 3963 strlcpy(hostname, http->hostname, sizeof(hostname));
3964 if ((hostptr = hostname + strlen(hostname) - 1) >= hostname &&
3965 *hostptr == '.')
3966 *hostptr = '\0';
3967 }
dcb445bc 3968
ef416fc2 3969# ifdef HAVE_LIBSSL
a4845881
MS		 3970 (void)any_root;
3971
ef416fc2 3972 context = SSL_CTX_new(SSLv23_client_method());
3973
3974 SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
3975
411affcf 3976 bio = BIO_new(_httpBIOMethods());
3977 BIO_ctrl(bio, BIO_C_SET_FILE_PTR, 0, (char *)http);
3978
7cf5915e 3979 http->tls = SSL_new(context);
a4845881 3980 SSL_set_bio(http->tls, bio, bio);
ef416fc2 3981
a29fd7dd 3982# ifdef HAVE_SSL_SET_TLSEXT_HOST_NAME
dcb445bc 3983 SSL_set_tlsext_host_name(http->tls, hostname);
a29fd7dd 3984# endif /* HAVE_SSL_SET_TLSEXT_HOST_NAME */
dcb445bc 3985
7cf5915e 3986 if (SSL_connect(http->tls) != 1)
ef416fc2 3987 {
ef416fc2 3988 unsigned long error; /* Error code */
3989
3990 while ((error = ERR_get_error()) != 0)
a4845881
MS		 3991 {
3992 message = ERR_error_string(error, NULL);
3993 DEBUG_printf(("8http_setup_ssl: %s", message));
3994 }
ef416fc2 3995
3996 SSL_CTX_free(context);
7cf5915e
MS		 3997 SSL_free(http->tls);
3998 http->tls = NULL;
ef416fc2 3999
4000# ifdef WIN32
4001 http->error = WSAGetLastError();
4002# else
4003 http->error = errno;
4004# endif /* WIN32 */
4005 http->status = HTTP_ERROR;
4006
a4845881
MS		 4007 if (!message)
4008 message = _("Unable to establish a secure connection to host.");
4009
4010 _cupsSetError(IPP_PKI_ERROR, message, 1);
4011
4012 return (-1);
ef416fc2 4013 }
4014
4015# elif defined(HAVE_GNUTLS)
83e08001
MS		 4016 (void)any_root;
4017
ef416fc2 4018 credentials = (gnutls_certificate_client_credentials *)
4019 malloc(sizeof(gnutls_certificate_client_credentials));
4020 if (credentials == NULL)
4021 {
a4845881
MS		 4022 DEBUG_printf(("8http_setup_ssl: Unable to allocate credentials: %s",
4023 strerror(errno)));
4024 http->error = errno;
ef416fc2 4025 http->status = HTTP_ERROR;
a4845881 4026 _cupsSetHTTPError(HTTP_ERROR);
ef416fc2 4027
4028 return (-1);
4029 }
4030
4031 gnutls_certificate_allocate_credentials(credentials);
4032
7cf5915e
MS		 4033 gnutls_init(&http->tls, GNUTLS_CLIENT);
4034 gnutls_set_default_priority(http->tls);
dcb445bc
MS		 4035 gnutls_server_name_set(http->tls, GNUTLS_NAME_DNS, hostname,
4036 strlen(hostname));
7cf5915e
MS		 4037 gnutls_credentials_set(http->tls, GNUTLS_CRD_CERTIFICATE, *credentials);
4038 gnutls_transport_set_ptr(http->tls, (gnutls_transport_ptr)http);
4039 gnutls_transport_set_pull_function(http->tls, _httpReadGNUTLS);
4040 gnutls_transport_set_push_function(http->tls, _httpWriteGNUTLS);
ef416fc2 4041
a4845881 4042 while ((status = gnutls_handshake(http->tls)) != GNUTLS_E_SUCCESS)
ef416fc2 4043 {
a4845881
MS		 4044 DEBUG_printf(("8http_setup_ssl: gnutls_handshake returned %d (%s)",
4045 status, gnutls_strerror(status)));
ef416fc2 4046
a4845881
MS		 4047 if (gnutls_error_is_fatal(status))
4048 {
4049 http->error = EIO;
4050 http->status = HTTP_ERROR;
85b5d1df 4051
a4845881
MS		 4052 _cupsSetError(IPP_PKI_ERROR, gnutls_strerror(status), 0);
4053
4054 gnutls_deinit(http->tls);
4055 gnutls_certificate_free_credentials(*credentials);
4056 free(credentials);
4057 http->tls = NULL;
4058
4059 return (-1);
4060 }
ef416fc2 4061 }
4062
7cf5915e 4063 http->tls_credentials = credentials;
ef416fc2 4064
4065# elif defined(HAVE_CDSASSL)
7cf5915e 4066 if ((error = SSLNewContext(false, &http->tls)))
e53920b9 4067 {
a4845881 4068 http->error = errno;
89d46774 4069 http->status = HTTP_ERROR;
a4845881 4070 _cupsSetHTTPError(HTTP_ERROR);
e53920b9 4071
89d46774 4072 return (-1);
e53920b9 4073 }
ef416fc2 4074
7cf5915e
MS		 4075 error = SSLSetConnection(http->tls, http);
4076 DEBUG_printf(("4http_setup_ssl: SSLSetConnection, error=%d", (int)error));
4077
4078 if (!error)
4079 {
4080 error = SSLSetIOFuncs(http->tls, _httpReadCDSA, _httpWriteCDSA);
4081 DEBUG_printf(("4http_setup_ssl: SSLSetIOFuncs, error=%d", (int)error));
4082 }
4083
7cf5915e
MS		 4084 if (!error)
4085 {
4086 error = SSLSetAllowsAnyRoot(http->tls, any_root);
4087 DEBUG_printf(("4http_setup_ssl: SSLSetAllowsAnyRoot(%d), error=%d",
4088 any_root, (int)error));
4089 }
89d46774 4090
4091 if (!error)
7cf5915e
MS		 4092 {
4093 error = SSLSetAllowsExpiredCerts(http->tls, cg->expired_certs);
4094 DEBUG_printf(("4http_setup_ssl: SSLSetAllowsExpiredCerts(%d), error=%d",
4095 cg->expired_certs, (int)error));
4096 }
89d46774 4097
ef416fc2 4098 if (!error)
7cf5915e
MS		 4099 {
4100 error = SSLSetAllowsExpiredRoots(http->tls, cg->expired_root);
4101 DEBUG_printf(("4http_setup_ssl: SSLSetAllowsExpiredRoots(%d), error=%d",
4102 cg->expired_root, (int)error));
4103 }
ef416fc2 4104
10ddcf65
MS		 4105 /*
4106 * In general, don't verify certificates since things like the common name
4107 * often do not match...
4108 */
4109
4110 if (!error)
4111 {
4112 error = SSLSetEnableCertVerify(http->tls, false);
4113 DEBUG_printf(("4http_setup_ssl: SSLSetEnableCertVerify, error=%d",
4114 (int)error));
4115 }
4116
82f97232 4117# ifdef HAVE_SECCERTIFICATECOPYDATA
ef416fc2 4118 if (!error)
7cf5915e
MS		 4119 {
4120 if (cg->client_cert_cb)
4121 {
4122 error = SSLSetSessionOption(http->tls,
4123 kSSLSessionOptionBreakOnCertRequested, true);
4124 DEBUG_printf(("4http_setup_ssl: kSSLSessionOptionBreakOnCertRequested, "
4125 "error=%d", (int)error));
4126 }
4127 else
4128 {
4129 error = http_set_credentials(http);
4130 DEBUG_printf(("4http_setup_ssl: http_set_credentials, error=%d",
4131 (int)error));
4132 }
4133 }
4134
4135 /*
4136 * If there's a server certificate callback installed let it evaluate the
4137 * certificate(s) during the handshake...
4138 */
4139
4140 if (!error && cg->server_cert_cb != NULL)
4141 {
10ddcf65
MS		 4142 error = SSLSetSessionOption(http->tls,
4143 kSSLSessionOptionBreakOnServerAuth, true);
4144 DEBUG_printf(("4http_setup_ssl: kSSLSessionOptionBreakOnServerAuth, "
4145 "error=%d", (int)error));
7cf5915e 4146 }
82f97232 4147# endif /* HAVE_SECCERTIFICATECOPYDATA */
ef416fc2 4148
10ddcf65
MS		 4149 /*
4150 * Let the server know which hostname/domain we are trying to connect to
4151 * in case it wants to serve up a certificate with a matching common name.
4152 */
4153
ed486911 4154 if (!error)
7cf5915e 4155 {
dcb445bc 4156 error = SSLSetPeerDomainName(http->tls, hostname, strlen(hostname));
7cf5915e
MS		 4157
4158 DEBUG_printf(("4http_setup_ssl: SSLSetPeerDomainName, error=%d",
4159 (int)error));
4160 }
ed486911 4161
ef416fc2 4162 if (!error)
b423cd4c 4163 {
7cf5915e
MS		 4164 int done = 0; /* Are we done yet? */
4165
4166 while (!error && !done)
4167 {
4168 error = SSLHandshake(http->tls);
4169
85dda01c 4170 DEBUG_printf(("4http_setup_ssl: SSLHandshake returned %d.", (int)error));
7cf5915e
MS		 4171
4172 switch (error)
4173 {
4174 case noErr :
4175 done = 1;
4176 break;
4177
4178 case errSSLWouldBlock :
82cc1f9a
MS		 4179 error = noErr; /* Force a retry */
4180 usleep(1000); /* in 1 millisecond */
7cf5915e
MS		 4181 break;
4182
82f97232 4183# ifdef HAVE_SECCERTIFICATECOPYDATA
7cf5915e
MS		 4184 case errSSLServerAuthCompleted :
4185 error = 0;
4186 if (cg->server_cert_cb)
4187 {
4188 error = httpCopyCredentials(http, &credentials);
4189 if (!error)
4190 {
4191 error = (cg->server_cert_cb)(http, http->tls, credentials,
4192 cg->server_cert_data);
4193 httpFreeCredentials(credentials);
4194 }
4195
10ddcf65
MS		 4196 DEBUG_printf(("4http_setup_ssl: Server certificate callback "
4197 "returned %d.", (int)error));
7cf5915e
MS		 4198 }
4199 break;
4200
4201 case errSSLClientCertRequested :
4202 error = 0;
4203
4204 if (cg->client_cert_cb)
4205 {
4206 names = NULL;
82f97232 4207 if (!(error = SSLCopyDistinguishedNames(http->tls, &dn_array)) &&
7cf5915e
MS		 4208 dn_array)
4209 {
4210 if ((names = cupsArrayNew(NULL, NULL)) != NULL)
4211 {
4212 for (i = 0, count = CFArrayGetCount(dn_array); i < count; i++)
4213 {
4214 data = (CFDataRef)CFArrayGetValueAtIndex(dn_array, i);
4215
82cc1f9a 4216 if ((credential = malloc(sizeof(*credential))) != NULL)
7cf5915e
MS		 4217 {
4218 credential->datalen = CFDataGetLength(data);
4219 if ((credential->data = malloc(credential->datalen)))
4220 {
82f97232 4221 memcpy((void *)credential->data, CFDataGetBytePtr(data),
7cf5915e
MS		 4222 credential->datalen);
4223 cupsArrayAdd(names, credential);
4224 }
4225 }
4226 }
4227 }
4228
4229 CFRelease(dn_array);
4230 }
4231
4232 if (!error)
4233 {
82f97232 4234 error = (cg->client_cert_cb)(http, http->tls, names,
7cf5915e
MS		 4235 cg->client_cert_data);
4236
85dda01c 4237 DEBUG_printf(("4http_setup_ssl: Client certificate callback "
7cf5915e
MS		 4238 "returned %d.", (int)error));
4239 }
4240
4241 httpFreeCredentials(names);
4242 }
4243 break;
82f97232 4244# endif /* HAVE_SECCERTIFICATECOPYDATA */
7cf5915e
MS		 4245
4246 case errSSLUnknownRootCert :
4247 message = _("Unable to establish a secure connection to host "
4248 "(untrusted certificate).");
4249 break;
4250
4251 case errSSLNoRootCert :
4252 message = _("Unable to establish a secure connection to host "
4253 "(self-signed certificate).");
4254 break;
4255
4256 case errSSLCertExpired :
4257 message = _("Unable to establish a secure connection to host "
4258 "(expired certificate).");
4259 break;
4260
4261 case errSSLCertNotYetValid :
4262 message = _("Unable to establish a secure connection to host "
4263 "(certificate not yet valid).");
4264 break;
4265
4266 case errSSLHostNameMismatch :
4267 message = _("Unable to establish a secure connection to host "
4268 "(host name mismatch).");
4269 break;
4270
4271 case errSSLXCertChainInvalid :
4272 message = _("Unable to establish a secure connection to host "
4273 "(certificate chain invalid).");
4274 break;
4275
4276 case errSSLConnectionRefused :
4277 message = _("Unable to establish a secure connection to host "
4278 "(peer dropped connection before responding).");
4279 break;
4280
4281 default :
4282 break;
4283 }
4284 }
b423cd4c 4285 }
ef416fc2 4286
89d46774 4287 if (error)
ef416fc2 4288 {
4289 http->error = error;
4290 http->status = HTTP_ERROR;
7cf5915e
MS		 4291 errno = ECONNREFUSED;
4292
4293 SSLDisposeContext(http->tls);
4294 http->tls = NULL;
ef416fc2 4295
7cf5915e
MS		 4296 /*
4297 * If an error string wasn't set by the callbacks use a generic one...
4298 */
4299
4300 if (!message)
4301#ifdef HAVE_CSSMERRORSTRING
4302 message = cssmErrorString(error);
4303#else
4304 message = _("Unable to establish a secure connection to host.");
4305#endif /* HAVE_CSSMERRORSTRING */
ef416fc2 4306
7cf5915e 4307 _cupsSetError(IPP_PKI_ERROR, message, 1);
ef416fc2 4308
cc754834
MS		 4309 return (-1);
4310 }
7cf5915e 4311
cc754834 4312# elif defined(HAVE_SSPISSL)
7cf5915e 4313 http->tls = _sspiAlloc();
cc754834 4314
7cf5915e 4315 if (!http->tls)
a4845881 4316 {
83e08001 4317 _cupsSetHTTPError(HTTP_ERROR);
cc754834 4318 return (-1);
83e08001 4319 }
cc754834 4320
7cf5915e
MS		 4321 http->tls->sock = http->fd;
4322 dwSize = sizeof(username) / sizeof(TCHAR);
cc754834
MS		 4323 GetUserName(username, &dwSize);
4324 _sntprintf_s(commonName, sizeof(commonName) / sizeof(TCHAR),
4325 sizeof(commonName) / sizeof(TCHAR), TEXT("CN=%s"), username);
4326
7cf5915e
MS		 4327 if (!_sspiGetCredentials(http->tls_credentials, L"ClientContainer",
4328 commonName, FALSE))
cc754834 4329 {
7cf5915e
MS		 4330 _sspiFree(http->tls_credentials);
4331 http->tls_credentials = NULL;
a4845881
MS		 4332
4333 http->error = EIO;
4334 http->status = HTTP_ERROR;
4335
4336 _cupsSetError(IPP_PKI_ERROR,
4337 _("Unable to establish a secure connection to host."), 1);
4338
cc754834
MS		 4339 return (-1);
4340 }
4341
83e08001 4342 _sspiSetAllowsAnyRoot(http->tls_credentials, any_root);
7cf5915e 4343 _sspiSetAllowsExpiredCerts(http->tls_credentials, TRUE);
cc754834 4344
dcb445bc 4345 if (!_sspiConnect(http->tls_credentials, hostname))
cc754834 4346 {
7cf5915e
MS		 4347 _sspiFree(http->tls_credentials);
4348 http->tls_credentials = NULL;
a4845881
MS		 4349
4350 http->error = EIO;
4351 http->status = HTTP_ERROR;
4352
4353 _cupsSetError(IPP_PKI_ERROR,
4354 _("Unable to establish a secure connection to host."), 1);
4355
ef416fc2 4356 return (-1);
4357 }
4358# endif /* HAVE_CDSASSL */
4359
ef416fc2 4360 return (0);
4361}
ef416fc2 4362
4363
ef416fc2 4364/*
4365 * 'http_shutdown_ssl()' - Shut down SSL/TLS on a connection.
4366 */
4367
4368static void
568fa3fa 4369http_shutdown_ssl(http_t *http) /* I - Connection to server */
ef416fc2 4370{
4371# ifdef HAVE_LIBSSL
89d46774 4372 SSL_CTX *context; /* Context for encryption */
ef416fc2 4373
a4845881 4374 context = SSL_get_SSL_CTX(http->tls);
ef416fc2 4375
a4845881 4376 SSL_shutdown(http->tls);
ef416fc2 4377 SSL_CTX_free(context);
a4845881 4378 SSL_free(http->tls);
ef416fc2 4379
4380# elif defined(HAVE_GNUTLS)
ef416fc2 4381 gnutls_certificate_client_credentials *credentials;
89d46774 4382 /* TLS credentials */
ef416fc2 4383
7cf5915e 4384 credentials = (gnutls_certificate_client_credentials *)(http->tls_credentials);
ef416fc2 4385
7cf5915e
MS		 4386 gnutls_bye(http->tls, GNUTLS_SHUT_RDWR);
4387 gnutls_deinit(http->tls);
ef416fc2 4388 gnutls_certificate_free_credentials(*credentials);
4389 free(credentials);
ef416fc2 4390
4391# elif defined(HAVE_CDSASSL)
7cf5915e 4392 while (SSLClose(http->tls) == errSSLWouldBlock)
b423cd4c 4393 usleep(1000);
4394
7cf5915e 4395 SSLDisposeContext(http->tls);
89d46774 4396
7cf5915e
MS		 4397 if (http->tls_credentials)
4398 CFRelease(http->tls_credentials);
89d46774 4399
cc754834 4400# elif defined(HAVE_SSPISSL)
7cf5915e 4401 _sspiFree(http->tls_credentials);
ef416fc2 4402# endif /* HAVE_LIBSSL */
4403
7cf5915e
MS		 4404 http->tls = NULL;
4405 http->tls_credentials = NULL;
ef416fc2 4406}
4407#endif /* HAVE_SSL */
4408
4409
4410#ifdef HAVE_SSL
4411/*
4412 * 'http_upgrade()' - Force upgrade to TLS encryption.
4413 */
4414
89d46774 4415static int /* O - Status of connection */
568fa3fa 4416http_upgrade(http_t *http) /* I - Connection to server */
ef416fc2 4417{
89d46774 4418 int ret; /* Return value */
4419 http_t myhttp; /* Local copy of HTTP data */
ef416fc2 4420
4421
e07d4801 4422 DEBUG_printf(("7http_upgrade(%p)", http));
ef416fc2 4423
85b5d1df
MS		 4424 /*
4425 * Flush the connection to make sure any previous "Upgrade" message
4426 * has been read.
4427 */
4428
4429 httpFlush(http);
4430
ef416fc2 4431 /*
4432 * Copy the HTTP data to a local variable so we can do the OPTIONS
4433 * request without interfering with the existing request data...
4434 */
4435
4436 memcpy(&myhttp, http, sizeof(myhttp));
4437
4438 /*
4439 * Send an OPTIONS request to the server, requiring SSL or TLS
4440 * encryption on the link...
4441 */
4442
f7deaa1a 4443 http->field_authorization = NULL; /* Don't free the auth string */
4444
b86bc4cf 4445 httpClearFields(http);
4446 httpSetField(http, HTTP_FIELD_CONNECTION, "upgrade");
7cf5915e 4447 httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.2, TLS/1.1, TLS/1.0, SSL/3.0");
ef416fc2 4448
b86bc4cf 4449 if ((ret = httpOptions(http, "*")) == 0)
ef416fc2 4450 {
4451 /*
4452 * Wait for the secure connection...
4453 */
4454
b86bc4cf 4455 while (httpUpdate(http) == HTTP_CONTINUE);
ef416fc2 4456 }
4457
ef416fc2 4458 /*
b86bc4cf 4459 * Restore the HTTP request data...
ef416fc2 4460 */
4461
b86bc4cf 4462 memcpy(http->fields, myhttp.fields, sizeof(http->fields));
f7deaa1a 4463 http->data_encoding = myhttp.data_encoding;
4464 http->data_remaining = myhttp.data_remaining;
4465 http->_data_remaining = myhttp._data_remaining;
4466 http->expect = myhttp.expect;
4467 http->field_authorization = myhttp.field_authorization;
bc44d920 4468 http->digest_tries = myhttp.digest_tries;
ef416fc2 4469
4470 /*
4471 * See if we actually went secure...
4472 */
4473
4474 if (!http->tls)
4475 {
4476 /*
4477 * Server does not support HTTP upgrade...
4478 */
4479
e07d4801 4480 DEBUG_puts("8http_upgrade: Server does not support HTTP upgrade!");
ef416fc2 4481
4482# ifdef WIN32
4483 closesocket(http->fd);
4484# else
4485 close(http->fd);
4486# endif
4487
4488 http->fd = -1;
4489
4490 return (-1);
4491 }
4492 else
4493 return (ret);
4494}
4495#endif /* HAVE_SSL */
4496
4497
ef416fc2 4498/*
4499 * 'http_write()' - Write a buffer to a HTTP connection.
4500 */
ef55b745 4501
ef416fc2 4502static int /* O - Number of bytes written */
568fa3fa 4503http_write(http_t *http, /* I - Connection to server */
f11a948a
MS		 4504 const char *buffer, /* I - Buffer for data */
4505 int length) /* I - Number of bytes to write */
ef416fc2 4506{
4507 int tbytes, /* Total bytes sent */
4508 bytes; /* Bytes sent */
4509
4510
f8b3a85b
MS		 4511 DEBUG_printf(("2http_write(http=%p, buffer=%p, length=%d)", http, buffer,
4512 length));
f11a948a
MS		 4513 http->error = 0;
4514 tbytes = 0;
ef416fc2 4515
4516 while (length > 0)
4517 {
12f89d24
MS		 4518 DEBUG_printf(("3http_write: About to write %d bytes.", (int)length));
4519
85dda01c
MS		 4520 if (http->timeout_cb)
4521 {
4522#ifdef HAVE_POLL
4523 struct pollfd pfd; /* Polled file descriptor */
4524#else
4525 fd_set output_set; /* Output ready for write? */
4526 struct timeval timeout; /* Timeout value */
4527#endif /* HAVE_POLL */
4528 int nfds; /* Result from select()/poll() */
4529
4530 do
4531 {
4532#ifdef HAVE_POLL
4533 pfd.fd = http->fd;
4534 pfd.events = POLLOUT;
4535
4536 while ((nfds = poll(&pfd, 1, http->wait_value)) < 0 &&
82cc1f9a
MS		 4537 (errno == EINTR || errno == EAGAIN))
4538 /* do nothing */;
85dda01c
MS		 4539
4540#else
4541 do
4542 {
4543 FD_ZERO(&output_set);
4544 FD_SET(http->fd, &output_set);
4545
4546 timeout.tv_sec = http->wait_value / 1000;
4547 timeout.tv_usec = 1000 * (http->wait_value % 1000);
4548
4549 nfds = select(http->fd + 1, NULL, &output_set, NULL, &timeout);
4550 }
4551# ifdef WIN32
4552 while (nfds < 0 && (WSAGetLastError() == WSAEINTR ||
4553 WSAGetLastError() == WSAEWOULDBLOCK));
4554# else
4555 while (nfds < 0 && (errno == EINTR || errno == EAGAIN));
4556# endif /* WIN32 */
4557#endif /* HAVE_POLL */
4558
4559 if (nfds < 0)
4560 {
4561 http->error = errno;
4562 return (-1);
4563 }
4564 else if (nfds == 0 && !(*http->timeout_cb)(http, http->timeout_data))
4565 {
4566#ifdef WIN32
83e08001 4567 http->error = WSAEWOULDBLOCK;
85dda01c
MS		 4568#else
4569 http->error = EWOULDBLOCK;
4570#endif /* WIN32 */
4571 return (-1);
4572 }
4573 }
4574 while (nfds <= 0);
4575 }
4576
ef416fc2 4577#ifdef HAVE_SSL
4578 if (http->tls)
4579 bytes = http_write_ssl(http, buffer, length);
4580 else
4581#endif /* HAVE_SSL */
4582 bytes = send(http->fd, buffer, length, 0);
4583
12f89d24
MS		 4584 DEBUG_printf(("3http_write: Write of %d bytes returned %d.", (int)length,
4585 (int)bytes));
4586
ef416fc2 4587 if (bytes < 0)
4588 {
4589#ifdef WIN32
10d09e33 4590 if (WSAGetLastError() == WSAEINTR)
cc754834 4591 continue;
10d09e33
MS		 4592 else if (WSAGetLastError() == WSAEWOULDBLOCK)
4593 {
4594 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
4595 continue;
4596
4597 http->error = WSAGetLastError();
4598 }
4599 else if (WSAGetLastError() != http->error &&
4600 WSAGetLastError() != WSAECONNRESET)
ef416fc2 4601 {
4602 http->error = WSAGetLastError();
4603 continue;
4604 }
10d09e33 4605
ef416fc2 4606#else
10d09e33 4607 if (errno == EINTR)
ef416fc2 4608 continue;
10d09e33
MS		 4609 else if (errno == EWOULDBLOCK || errno == EAGAIN)
4610 {
4611 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
4612 continue;
4613 else if (!http->timeout_cb && errno == EAGAIN)
4614 continue;
4615
4616 http->error = errno;
4617 }
ef416fc2 4618 else if (errno != http->error && errno != ECONNRESET)
4619 {
4620 http->error = errno;
4621 continue;
4622 }
4623#endif /* WIN32 */
4624
f8b3a85b
MS		 4625 DEBUG_printf(("3http_write: error writing data (%s).",
4626 strerror(http->error)));
ef416fc2 4627
4628 return (-1);
4629 }
4630
4631 buffer += bytes;
4632 tbytes += bytes;
4633 length -= bytes;
4634 }
4635
4636#ifdef DEBUG
ae71f5de 4637 http_debug_hex("http_write", buffer - tbytes, tbytes);
ef416fc2 4638#endif /* DEBUG */
4639
f8b3a85b
MS		 4640 DEBUG_printf(("3http_write: Returning %d.", tbytes));
4641
ef416fc2 4642 return (tbytes);
4643}
4644
4645
4646/*
4647 * 'http_write_chunk()' - Write a chunked buffer.
4648 */
4649
4650static int /* O - Number bytes written */
568fa3fa 4651http_write_chunk(http_t *http, /* I - Connection to server */
ef416fc2 4652 const char *buffer, /* I - Buffer to write */
4653 int length) /* I - Length of buffer */
4654{
4655 char header[255]; /* Chunk header */
4656 int bytes; /* Bytes written */
4657
f11a948a 4658
e07d4801 4659 DEBUG_printf(("7http_write_chunk(http=%p, buffer=%p, length=%d)",
ef416fc2 4660 http, buffer, length));
4661
4662 /*
4663 * Write the chunk header, data, and trailer.
4664 */
4665
4666 sprintf(header, "%x\r\n", length);
b86bc4cf 4667 if (http_write(http, header, (int)strlen(header)) < 0)
ef416fc2 4668 {
e07d4801 4669 DEBUG_puts("8http_write_chunk: http_write of length failed!");
ef416fc2 4670 return (-1);
4671 }
4672
4673 if ((bytes = http_write(http, buffer, length)) < 0)
4674 {
e07d4801 4675 DEBUG_puts("8http_write_chunk: http_write of buffer failed!");
ef416fc2 4676 return (-1);
4677 }
4678
4679 if (http_write(http, "\r\n", 2) < 0)
4680 {
e07d4801 4681 DEBUG_puts("8http_write_chunk: http_write of CR LF failed!");
ef416fc2 4682 return (-1);
4683 }
4684
4685 return (bytes);
4686}
4687
4688
4689#ifdef HAVE_SSL
4690/*
4691 * 'http_write_ssl()' - Write to a SSL/TLS connection.
4692 */
4693
4694static int /* O - Bytes written */
568fa3fa 4695http_write_ssl(http_t *http, /* I - Connection to server */
ef416fc2 4696 const char *buf, /* I - Buffer holding data */
4697 int len) /* I - Length of buffer */
4698{
f8b3a85b
MS		 4699 ssize_t result; /* Return value */
4700
4701
4702 DEBUG_printf(("2http_write_ssl(http=%p, buf=%p, len=%d)", http, buf, len));
4703
ef416fc2 4704# if defined(HAVE_LIBSSL)
f8b3a85b 4705 result = SSL_write((SSL *)(http->tls), buf, len);
ef416fc2 4706
4707# elif defined(HAVE_GNUTLS)
7cf5915e 4708 result = gnutls_record_send(http->tls, buf, len);
ef55b745
MS		 4709
4710 if (result < 0 && !errno)
4711 {
4712 /*
4713 * Convert GNU TLS error to errno value...
4714 */
4715
4716 switch (result)
4717 {
4718 case GNUTLS_E_INTERRUPTED :
4719 errno = EINTR;
4720 break;
4721
4722 case GNUTLS_E_AGAIN :
4723 errno = EAGAIN;
4724 break;
4725
4726 default :
4727 errno = EPIPE;
4728 break;
4729 }
4730
4731 result = -1;
4732 }
4733
ef416fc2 4734# elif defined(HAVE_CDSASSL)
4735 OSStatus error; /* Error info */
4736 size_t processed; /* Number of bytes processed */
4737
4738
7cf5915e 4739 error = SSLWrite(http->tls, buf, len, &processed);
ef416fc2 4740
fa73b229 4741 switch (error)
ef416fc2 4742 {
fa73b229 4743 case 0 :
4744 result = (int)processed;
4745 break;
84315f46 4746
fa73b229 4747 case errSSLWouldBlock :
b423cd4c 4748 if (processed)
4749 result = (int)processed;
4750 else
4751 {
4752 result = -1;
ef55b745 4753 errno = EINTR;
b423cd4c 4754 }
fa73b229 4755 break;
84315f46
MS		 4756
4757 case errSSLClosedGraceful :
fa73b229 4758 default :
84315f46
MS		 4759 if (processed)
4760 result = (int)processed;
4761 else
4762 {
4763 result = -1;
4764 errno = EPIPE;
4765 }
fa73b229 4766 break;
ef416fc2 4767 }
cc754834 4768# elif defined(HAVE_SSPISSL)
84315f46 4769 return _sspiWrite((_sspi_struct_t *)http->tls, (void *)buf, len);
ef416fc2 4770# endif /* HAVE_LIBSSL */
f8b3a85b
MS		 4771
4772 DEBUG_printf(("3http_write_ssl: Returning %d.", (int)result));
4773
4774 return ((int)result);
ef416fc2 4775}
4776#endif /* HAVE_SSL */
4777
4778
4779/*
b19ccc9e 4780 * End of "$Id: http.c 7850 2008-08-20 00:07:25Z mike $".
ef416fc2 4781 */
Unnamed repository; edit this file 'description' to name the repository.