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Merge changes from CUPS 1.5svn-r9631.
[thirdparty/cups.git] / cups / http.c
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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 *
0268488e 6 * Copyright 2007-2011 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 *
7cf5915e
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 * _httpConvertCredentials() - Convert credentials to the internal format.
38 * _httpCreate() - Create an unconnected HTTP connection.
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 * httpGetStatus() - Get the status of the last HTTP request.
60 * httpGetSubField() - Get a sub-field value.
61 * httpGetSubField2() - Get a sub-field value.
62 * httpGets() - Get a line of text from a HTTP connection.
63 * httpHead() - Send a HEAD request to the server.
64 * httpInitialize() - Initialize the HTTP interface library and set
65 * the default HTTP proxy (if any).
66 * httpOptions() - Send an OPTIONS request to the server.
67 * _httpPeek() - Peek at data from a HTTP connection.
68 * httpPost() - Send a POST request to the server.
69 * httpPrintf() - Print a formatted string to a HTTP connection.
70 * httpPut() - Send a PUT request to the server.
71 * httpRead() - Read data from a HTTP connection.
72 * httpRead2() - Read data from a HTTP connection.
73 * _httpReadCDSA() - Read function for the CDSA library.
74 * _httpReadGNUTLS() - Read function for the GNU TLS library.
75 * httpReconnect() - Reconnect to a HTTP server.
76 * httpSetAuthString() - Set the current authorization string.
77 * httpSetCredentials() - Set the credentials associated with an
78 * encrypted connection.
79 * httpSetCookie() - Set the cookie value(s).
80 * httpSetExpect() - Set the Expect: header in a request.
81 * httpSetField() - Set the value of an HTTP header.
82 * httpSetLength() - Set the content-length and content-encoding.
10d09e33
MS		 83 * _httpSetTimeout() - Set read/write timeouts and an optional
84 * callback.
7cf5915e 85 * httpTrace() - Send an TRACE request to the server.
e60ec91f
MS		 86 * _httpUpdate() - Update the current HTTP status for incoming
87 * data.
7cf5915e
MS		 88 * httpUpdate() - Update the current HTTP state for incoming
89 * data.
90 * _httpWait() - Wait for data available on a connection (no
91 * flush).
92 * httpWait() - Wait for data available on a connection.
93 * httpWrite() - Write data to a HTTP connection.
94 * httpWrite2() - Write data to a HTTP connection.
95 * _httpWriteCDSA() - Write function for the CDSA library.
96 * _httpWriteGNUTLS() - Write function for the GNU TLS library.
97 * http_bio_ctrl() - Control the HTTP connection.
98 * http_bio_free() - Free OpenSSL data.
99 * http_bio_new() - Initialize an OpenSSL BIO structure.
100 * http_bio_puts() - Send a string for OpenSSL.
101 * http_bio_read() - Read data for OpenSSL.
102 * http_bio_write() - Write data for OpenSSL.
103 * http_debug_hex() - Do a hex dump of a buffer.
104 * http_field() - Return the field index for a field name.
105 * http_read_ssl() - Read from a SSL/TLS connection.
106 * http_locking_cb() - Lock/unlock a thread's mutex.
107 * http_send() - Send a request with all fields and the trailing
108 * blank line.
109 * http_set_credentials() - Set the SSL/TLS credentials.
110 * http_setup_ssl() - Set up SSL/TLS support on a connection.
111 * http_shutdown_ssl() - Shut down SSL/TLS on a connection.
112 * http_threadid_cb() - Return the current thread ID.
113 * http_upgrade() - Force upgrade to TLS encryption.
114 * http_write() - Write a buffer to a HTTP connection.
115 * http_write_chunk() - Write a chunked buffer.
116 * http_write_ssl() - Write to a SSL/TLS connection.
ef416fc2 117 */
118
119/*
120 * Include necessary headers...
121 */
122
71e16022 123#include "cups-private.h"
ef416fc2 124#include <fcntl.h>
cc754834
MS		 125#ifdef WIN32
126# include <tchar.h>
127#else
ef416fc2 128# include <signal.h>
129# include <sys/time.h>
130# include <sys/resource.h>
cc754834 131#endif /* WIN32 */
f7deaa1a 132#ifdef HAVE_POLL
133# include <sys/poll.h>
134#endif /* HAVE_POLL */
ef416fc2 135
136
137/*
138 * Some operating systems have done away with the Fxxxx constants for
139 * the fcntl() call; this works around that "feature"...
140 */
141
142#ifndef FNONBLK
143# define FNONBLK O_NONBLOCK
144#endif /* !FNONBLK */
145
146
147/*
148 * Local functions...
149 */
150
ae71f5de
MS		 151#ifdef DEBUG
152static void http_debug_hex(const char *prefix, const char *buffer,
153 int bytes);
154#endif /* DEBUG */
ef416fc2 155static http_field_t http_field(const char *name);
156static int http_send(http_t *http, http_state_t request,
157 const char *uri);
ef416fc2 158static int http_write(http_t *http, const char *buffer,
159 int length);
160static int http_write_chunk(http_t *http, const char *buffer,
161 int length);
162#ifdef HAVE_SSL
163static int http_read_ssl(http_t *http, char *buf, int len);
82f97232 164# if defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
7cf5915e 165static int http_set_credentials(http_t *http);
82f97232 166# endif /* HAVE_CDSASSL ** HAVE_SECCERTIFICATECOPYDATA */
ef416fc2 167static int http_setup_ssl(http_t *http);
168static void http_shutdown_ssl(http_t *http);
169static int http_upgrade(http_t *http);
170static int http_write_ssl(http_t *http, const char *buf, int len);
6d2f911b
MS		 171
172# ifdef HAVE_GNUTLS
173# ifdef HAVE_PTHREAD_H
174GCRY_THREAD_OPTION_PTHREAD_IMPL;
175# endif /* HAVE_PTHREAD_H */
176
177# elif defined(HAVE_LIBSSL)
178static _cups_mutex_t *http_locks; /* OpenSSL lock mutexes */
179
180static void http_locking_cb(int mode, int type, const char *file,
181 int line);
182static unsigned long http_threadid_cb(void);
183# endif /* HAVE_GNUTLS */
ef416fc2 184#endif /* HAVE_SSL */
185
186
187/*
188 * Local globals...
189 */
190
191static const char * const http_fields[] =
192 {
193 "Accept-Language",
194 "Accept-Ranges",
195 "Authorization",
196 "Connection",
197 "Content-Encoding",
198 "Content-Language",
199 "Content-Length",
200 "Content-Location",
201 "Content-MD5",
202 "Content-Range",
203 "Content-Type",
204 "Content-Version",
205 "Date",
206 "Host",
207 "If-Modified-Since",
208 "If-Unmodified-since",
209 "Keep-Alive",
210 "Last-Modified",
211 "Link",
212 "Location",
213 "Range",
214 "Referer",
215 "Retry-After",
216 "Transfer-Encoding",
217 "Upgrade",
218 "User-Agent",
219 "WWW-Authenticate"
220 };
f11a948a
MS		 221#ifdef DEBUG
222static const char * const http_states[] =
223 {
224 "HTTP_WAITING",
225 "HTTP_OPTIONS",
226 "HTTP_GET",
227 "HTTP_GET_SEND",
228 "HTTP_HEAD",
229 "HTTP_POST",
230 "HTTP_POST_RECV",
231 "HTTP_POST_SEND",
232 "HTTP_PUT",
233 "HTTP_PUT_RECV",
234 "HTTP_DELETE",
235 "HTTP_TRACE",
236 "HTTP_CLOSE",
237 "HTTP_STATUS"
238 };
239#endif /* DEBUG */
ef416fc2 240
241
411affcf 242#if defined(HAVE_SSL) && defined(HAVE_LIBSSL)
243/*
244 * BIO methods for OpenSSL...
245 */
246
247static int http_bio_write(BIO *h, const char *buf, int num);
248static int http_bio_read(BIO *h, char *buf, int size);
249static int http_bio_puts(BIO *h, const char *str);
250static long http_bio_ctrl(BIO *h, int cmd, long arg1, void *arg2);
251static int http_bio_new(BIO *h);
252static int http_bio_free(BIO *data);
253
254static BIO_METHOD http_bio_methods =
255 {
256 BIO_TYPE_SOCKET,
257 "http",
258 http_bio_write,
259 http_bio_read,
260 http_bio_puts,
261 NULL, /* http_bio_gets, */
262 http_bio_ctrl,
263 http_bio_new,
264 http_bio_free,
265 NULL,
266 };
7cf5915e 267#endif /* HAVE_SSL && HAVE_LIBSSL */
411affcf 268
269
7cf5915e
MS		 270/*
271 * 'httpAddCredential()' - Allocates and adds a single credential to an array.
272 *
273 * Use @code cupsArrayNew(NULL, NULL)@ to create a credentials array.
274 *
275 * @since CUPS 1.5@
276 */
277
278int /* O - 0 on success, -1 on error */
279httpAddCredential(
280 cups_array_t *credentials, /* I - Credentials array */
281 const void *data, /* I - PEM-encoded X.509 data */
282 size_t datalen) /* I - Length of data */
283{
284 http_credential_t *credential; /* Credential data */
285
286
287 if ((credential = malloc(sizeof(http_credential_t))) != NULL)
288 {
289 credential->datalen = datalen;
290
291 if ((credential->data = malloc(datalen)) != NULL)
292 {
293 memcpy(credential->data, data, datalen);
294 cupsArrayAdd(credentials, credential);
295 return (0);
296 }
297
298 free(credential);
299 }
300
301 return (-1);
302}
303
304
305#if defined(HAVE_SSL) && defined(HAVE_LIBSSL)
411affcf 306/*
307 * '_httpBIOMethods()' - Get the OpenSSL BIO methods for HTTP connections.
308 */
309
310BIO_METHOD * /* O - BIO methods for OpenSSL */
311_httpBIOMethods(void)
312{
313 return (&http_bio_methods);
314}
315#endif /* HAVE_SSL && HAVE_LIBSSL */
316
317
ecdc0628 318/*
319 * 'httpBlocking()' - Set blocking/non-blocking behavior on a connection.
320 */
321
322void
568fa3fa 323httpBlocking(http_t *http, /* I - Connection to server */
ecdc0628 324 int b) /* I - 1 = blocking, 0 = non-blocking */
325{
326 if (http)
327 http->blocking = b;
328}
329
330
ef416fc2 331/*
332 * 'httpCheck()' - Check to see if there is a pending response from the server.
333 */
334
ecdc0628 335int /* O - 0 = no data, 1 = data available */
568fa3fa 336httpCheck(http_t *http) /* I - Connection to server */
ef416fc2 337{
338 return (httpWait(http, 0));
339}
340
341
342/*
343 * 'httpClearCookie()' - Clear the cookie value(s).
344 *
426c6a59 345 * @since CUPS 1.1.19/Mac OS X 10.3@
ef416fc2 346 */
347
348void
568fa3fa 349httpClearCookie(http_t *http) /* I - Connection to server */
ef416fc2 350{
351 if (!http)
352 return;
353
354 if (http->cookie)
355 {
356 free(http->cookie);
357 http->cookie = NULL;
358 }
359}
360
361
ecdc0628 362/*
363 * 'httpClearFields()' - Clear HTTP request fields.
364 */
365
366void
568fa3fa 367httpClearFields(http_t *http) /* I - Connection to server */
ecdc0628 368{
369 if (http)
370 {
371 memset(http->fields, 0, sizeof(http->fields));
07725fee 372 if (http->hostname[0] == '/')
373 httpSetField(http, HTTP_FIELD_HOST, "localhost");
374 else
375 httpSetField(http, HTTP_FIELD_HOST, http->hostname);
b423cd4c 376
f7deaa1a 377 if (http->field_authorization)
378 {
379 free(http->field_authorization);
380 http->field_authorization = NULL;
381 }
382
b423cd4c 383 http->expect = (http_status_t)0;
ecdc0628 384 }
385}
386
387
ef416fc2 388/*
6d2f911b 389 * 'httpClose()' - Close an HTTP connection.
ef416fc2 390 */
391
392void
568fa3fa 393httpClose(http_t *http) /* I - Connection to server */
ef416fc2 394{
f7deaa1a 395#ifdef HAVE_GSSAPI
1f0275e3 396 OM_uint32 minor_status; /* Minor status code */
f7deaa1a 397#endif /* HAVE_GSSAPI */
398
399
e07d4801 400 DEBUG_printf(("httpClose(http=%p)", http));
ef416fc2 401
6d2f911b
MS		 402 /*
403 * Range check input...
404 */
405
ef416fc2 406 if (!http)
407 return;
408
6d2f911b
MS		 409 /*
410 * Close any open connection...
411 */
412
413 _httpDisconnect(http);
414
415 /*
416 * Free memory used...
417 */
418
ef416fc2 419 httpAddrFreeList(http->addrlist);
420
ef416fc2 421 if (http->cookie)
422 free(http->cookie);
423
f7deaa1a 424#ifdef HAVE_GSSAPI
425 if (http->gssctx != GSS_C_NO_CONTEXT)
1f0275e3 426 gss_delete_sec_context(&minor_status, &http->gssctx, GSS_C_NO_BUFFER);
f7deaa1a 427
428 if (http->gssname != GSS_C_NO_NAME)
1f0275e3 429 gss_release_name(&minor_status, &http->gssname);
f7deaa1a 430#endif /* HAVE_GSSAPI */
431
b94498cf 432#ifdef HAVE_AUTHORIZATION_H
433 if (http->auth_ref)
434 AuthorizationFree(http->auth_ref, kAuthorizationFlagDefaults);
435#endif /* HAVE_AUTHORIZATION_H */
436
f7deaa1a 437 httpClearFields(http);
438
439 if (http->authstring && http->authstring != http->_authstring)
440 free(http->authstring);
441
ef416fc2 442 free(http);
443}
444
445
446/*
447 * 'httpConnect()' - Connect to a HTTP server.
1ff0402e
MS		 448 *
449 * This function is deprecated - use @link httpConnectEncrypt@ instead.
450 *
451 * @deprecated@
ef416fc2 452 */
453
454http_t * /* O - New HTTP connection */
455httpConnect(const char *host, /* I - Host to connect to */
456 int port) /* I - Port number */
457{
1ff0402e
MS		 458 return (httpConnectEncrypt(host, port, HTTP_ENCRYPT_IF_REQUESTED));
459}
460
461
462/*
463 * 'httpConnectEncrypt()' - Connect to a HTTP server using encryption.
464 */
465
466http_t * /* O - New HTTP connection */
467httpConnectEncrypt(
468 const char *host, /* I - Host to connect to */
469 int port, /* I - Port number */
470 http_encryption_t encryption) /* I - Type of encryption to use */
471{
472 http_t *http; /* New HTTP connection */
ef416fc2 473
474
e07d4801 475 DEBUG_printf(("httpConnectEncrypt(host=\"%s\", port=%d, encryption=%d)",
1ff0402e
MS		 476 host, port, encryption));
477
ef416fc2 478 /*
1ff0402e 479 * Create the HTTP structure...
ef416fc2 480 */
481
c8fef167 482 if ((http = _httpCreate(host, port, NULL, encryption, AF_UNSPEC)) == NULL)
1ff0402e 483 return (NULL);
ef416fc2 484
1ff0402e
MS		 485 /*
486 * Connect to the remote system...
487 */
488
489 if (!httpReconnect(http))
490 return (http);
491
492 /*
493 * Could not connect to any known address - bail out!
494 */
495
496 httpAddrFreeList(http->addrlist);
497
498 free(http);
499
500 return (NULL);
ef416fc2 501}
502
503
7cf5915e
MS		 504/*
505 * 'httpCopyCredentials()' - Copy the credentials associated with an encrypted
506 * connection.
507 *
508 * @since CUPS 1.5@
509 */
510
511int /* O - Status of call (0 = success) */
512httpCopyCredentials(
513 http_t *http, /* I - Connection to server */
514 cups_array_t **credentials) /* O - Array of credentials */
515{
516# ifdef HAVE_LIBSSL
517# elif defined(HAVE_GNUTLS)
82f97232 518# elif defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
7cf5915e
MS		 519 OSStatus error; /* Error code */
520 CFIndex count; /* Number of credentials */
521 CFArrayRef peerCerts; /* Peer certificates */
522 SecCertificateRef secCert; /* Certificate reference */
523 CFDataRef data; /* Certificate data */
524 int i; /* Looping var */
525# elif defined(HAVE_SSPISSL)
526# endif /* HAVE_LIBSSL */
527
528
529 if (credentials)
530 *credentials = NULL;
531
532 if (!http || !http->tls || !credentials)
533 return (-1);
534
535# ifdef HAVE_LIBSSL
536 return (-1);
537
538# elif defined(HAVE_GNUTLS)
539 return (-1);
540
82f97232 541# elif defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
7cf5915e
MS		 542 if (!(error = SSLCopyPeerCertificates(http->tls, &peerCerts)) && peerCerts)
543 {
544 if ((*credentials = cupsArrayNew(NULL, NULL)) != NULL)
545 {
546 for (i = 0, count = CFArrayGetCount(peerCerts); i < count; i++)
547 {
548 secCert = (SecCertificateRef)CFArrayGetValueAtIndex(peerCerts, i);
549 if ((data = SecCertificateCopyData(secCert)))
550 {
551 httpAddCredential(*credentials, CFDataGetBytePtr(data),
552 CFDataGetLength(data));
553 CFRelease(data);
554 }
555 }
556 }
557
558 CFRelease(peerCerts);
559 }
560
561 return (error);
562
563# elif defined(HAVE_SSPISSL)
564 return (-1);
82f97232
MS		 565
566# else
567 return (-1);
7cf5915e
MS		 568# endif /* HAVE_LIBSSL */
569}
570
571
572/*
573 * '_httpConvertCredentials()' - Convert credentials to the internal format.
574 */
575
576http_tls_credentials_t /* O - Internal credentials */
577_httpConvertCredentials(
578 cups_array_t *credentials) /* I - Array of credentials */
579{
580 if (!credentials)
581 return (NULL);
582
583# ifdef HAVE_LIBSSL
584 return (NULL);
585
586# elif defined(HAVE_GNUTLS)
587 return (NULL);
588
82f97232 589# elif defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
7cf5915e
MS		 590 CFMutableArrayRef peerCerts; /* Peer credentials reference */
591 SecCertificateRef secCert; /* Certificate reference */
592 CFDataRef data; /* Credential data reference */
593 http_credential_t *credential; /* Credential data */
594
595
596 if ((peerCerts = CFArrayCreateMutable(kCFAllocatorDefault,
597 cupsArrayCount(credentials),
598 &kCFTypeArrayCallBacks)) == NULL)
599 return (NULL);
600
601 for (credential = (http_credential_t *)cupsArrayFirst(credentials);
602 credential;
603 credential = (http_credential_t *)cupsArrayNext(credentials))
604 {
82f97232 605 if ((data = CFDataCreate(kCFAllocatorDefault, credential->data,
7cf5915e
MS		 606 credential->datalen)))
607 {
608 if ((secCert = SecCertificateCreateWithData(kCFAllocatorDefault, data))
609 != NULL)
610 {
611 CFArrayAppendValue(peerCerts, secCert);
612 CFRelease(secCert);
613 }
614
615 CFRelease(data);
616 }
617 }
618
619 return (peerCerts);
620
621# elif defined(HAVE_SSPISSL)
622 return (NULL);
623
624# else
625 return (NULL);
626# endif /* HAVE_LIBSSL */
627}
628
629
ef416fc2 630/*
1ff0402e 631 * '_httpCreate()' - Create an unconnected HTTP connection.
ef416fc2 632 */
633
1ff0402e
MS		 634http_t * /* O - HTTP connection */
635_httpCreate(
636 const char *host, /* I - Hostname */
ef416fc2 637 int port, /* I - Port number */
c8fef167 638 http_addrlist_t *addrlist, /* I - Address list or NULL */
1106b00e
MS		 639 http_encryption_t encryption, /* I - Encryption to use */
640 int family) /* I - Address family or AF_UNSPEC */
ef416fc2 641{
c8fef167
MS		 642 http_t *http; /* New HTTP connection */
643 char service[255]; /* Service name */
ef416fc2 644
645
e07d4801 646 DEBUG_printf(("4_httpCreate(host=\"%s\", port=%d, encryption=%d)",
1ff0402e 647 host, port, encryption));
ef416fc2 648
649 if (!host)
650 return (NULL);
651
652 httpInitialize();
653
654 /*
655 * Lookup the host...
656 */
657
658 sprintf(service, "%d", port);
659
c8fef167
MS		 660 if (!addrlist)
661 if ((addrlist = httpAddrGetList(host, family, service)) == NULL)
662 return (NULL);
ef416fc2 663
664 /*
665 * Allocate memory for the structure...
666 */
667
91c84a35
MS		 668 if ((http = calloc(sizeof(http_t), 1)) == NULL)
669 {
670 httpAddrFreeList(addrlist);
ef416fc2 671 return (NULL);
91c84a35 672 }
ef416fc2 673
1ff0402e
MS		 674 /*
675 * Initialize the HTTP data...
676 */
677
ef416fc2 678 http->activity = time(NULL);
1ff0402e
MS		 679 http->addrlist = addrlist;
680 http->blocking = 1;
ef416fc2 681 http->fd = -1;
f7deaa1a 682#ifdef HAVE_GSSAPI
1ff0402e
MS		 683 http->gssctx = GSS_C_NO_CONTEXT;
684 http->gssname = GSS_C_NO_NAME;
f7deaa1a 685#endif /* HAVE_GSSAPI */
1ff0402e 686 http->version = HTTP_1_1;
f7deaa1a 687
1ff0402e 688 strlcpy(http->hostname, host, sizeof(http->hostname));
ef416fc2 689
690 if (port == 443) /* Always use encryption for https */
691 http->encryption = HTTP_ENCRYPT_ALWAYS;
692 else
693 http->encryption = encryption;
694
695 /*
1ff0402e 696 * Return the new structure...
ef416fc2 697 */
698
1ff0402e 699 return (http);
ef416fc2 700}
701
702
703/*
704 * 'httpDelete()' - Send a DELETE request to the server.
705 */
706
707int /* O - Status of call (0 = success) */
568fa3fa 708httpDelete(http_t *http, /* I - Connection to server */
ef416fc2 709 const char *uri) /* I - URI to delete */
710{
711 return (http_send(http, HTTP_DELETE, uri));
712}
713
714
6d2f911b
MS		 715/*
716 * '_httpDisconnect()' - Disconnect a HTTP connection.
717 */
718
719void
720_httpDisconnect(http_t *http) /* I - Connection to server */
721{
722#ifdef HAVE_SSL
723 if (http->tls)
724 http_shutdown_ssl(http);
725#endif /* HAVE_SSL */
726
727#ifdef WIN32
728 closesocket(http->fd);
729#else
730 close(http->fd);
731#endif /* WIN32 */
732
733 http->fd = -1;
734}
735
736
ef416fc2 737/*
738 * 'httpEncryption()' - Set the required encryption on the link.
739 */
740
741int /* O - -1 on error, 0 on success */
568fa3fa 742httpEncryption(http_t *http, /* I - Connection to server */
ef416fc2 743 http_encryption_t e) /* I - New encryption preference */
744{
e07d4801 745 DEBUG_printf(("httpEncryption(http=%p, e=%d)", http, e));
ef416fc2 746
747#ifdef HAVE_SSL
748 if (!http)
749 return (0);
750
751 http->encryption = e;
752
753 if ((http->encryption == HTTP_ENCRYPT_ALWAYS && !http->tls) ||
754 (http->encryption == HTTP_ENCRYPT_NEVER && http->tls))
755 return (httpReconnect(http));
756 else if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls)
757 return (http_upgrade(http));
758 else
759 return (0);
760#else
761 if (e == HTTP_ENCRYPT_ALWAYS || e == HTTP_ENCRYPT_REQUIRED)
762 return (-1);
763 else
764 return (0);
765#endif /* HAVE_SSL */
766}
767
768
ecdc0628 769/*
770 * 'httpError()' - Get the last error on a connection.
771 */
772
773int /* O - Error code (errno) value */
568fa3fa 774httpError(http_t *http) /* I - Connection to server */
ecdc0628 775{
776 if (http)
777 return (http->error);
778 else
779 return (EINVAL);
780}
781
782
ef416fc2 783/*
784 * 'httpFlush()' - Flush data from a HTTP connection.
785 */
786
787void
568fa3fa 788httpFlush(http_t *http) /* I - Connection to server */
ef416fc2 789{
f8b3a85b
MS		 790 char buffer[8192]; /* Junk buffer */
791 int blocking; /* To block or not to block */
792 http_state_t oldstate; /* Old state */
ef416fc2 793
794
f11a948a
MS		 795 DEBUG_printf(("httpFlush(http=%p), state=%s", http,
796 http_states[http->state]));
ef416fc2 797
fa73b229 798 /*
799 * Temporarily set non-blocking mode so we don't get stuck in httpRead()...
800 */
801
802 blocking = http->blocking;
803 http->blocking = 0;
804
805 /*
806 * Read any data we can...
807 */
808
f8b3a85b 809 oldstate = http->state;
a4d04587 810 while (httpRead2(http, buffer, sizeof(buffer)) > 0);
fa73b229 811
812 /*
813 * Restore blocking and reset the connection if we didn't get all of
814 * the remaining data...
815 */
816
817 http->blocking = blocking;
818
aaf19ab0 819 if (http->state == oldstate && http->state != HTTP_WAITING && http->fd >= 0)
fa73b229 820 {
821 /*
822 * Didn't get the data back, so close the current connection.
823 */
824
825 http->state = HTTP_WAITING;
826
827#ifdef HAVE_SSL
828 if (http->tls)
829 http_shutdown_ssl(http);
830#endif /* HAVE_SSL */
831
832#ifdef WIN32
833 closesocket(http->fd);
834#else
835 close(http->fd);
836#endif /* WIN32 */
837
838 http->fd = -1;
839 }
ef416fc2 840}
841
842
843/*
844 * 'httpFlushWrite()' - Flush data in write buffer.
845 *
426c6a59 846 * @since CUPS 1.2/Mac OS X 10.5@
ef416fc2 847 */
848
849int /* O - Bytes written or -1 on error */
568fa3fa 850httpFlushWrite(http_t *http) /* I - Connection to server */
ef416fc2 851{
852 int bytes; /* Bytes written */
853
854
e07d4801 855 DEBUG_printf(("httpFlushWrite(http=%p)", http));
ef416fc2 856
857 if (!http || !http->wused)
f8b3a85b
MS		 858 {
859 DEBUG_puts(http ? "1httpFlushWrite: Write buffer is empty." :
860 "1httpFlushWrite: No connection.");
ef416fc2 861 return (0);
f8b3a85b 862 }
ef416fc2 863
864 if (http->data_encoding == HTTP_ENCODE_CHUNKED)
865 bytes = http_write_chunk(http, http->wbuffer, http->wused);
866 else
867 bytes = http_write(http, http->wbuffer, http->wused);
868
869 http->wused = 0;
870
f8b3a85b
MS		 871 DEBUG_printf(("1httpFlushWrite: Returning %d.", bytes));
872
ef416fc2 873 return (bytes);
874}
875
876
7cf5915e
MS		 877/*
878 * '_httpFreeCredentials()' - Free internal credentials.
879 */
880
881void
882_httpFreeCredentials(
883 http_tls_credentials_t credentials) /* I - Internal credentials */
884{
885 if (!credentials)
886 return;
887
888#ifdef HAVE_LIBSSL
889 (void)credentials;
890
891#elif defined(HAVE_GNUTLS)
892 (void)credentials;
893
894#elif defined(HAVE_CDSASSL)
895 CFRelease(credentials);
896
897#elif defined(HAVE_SSPISSL)
898 (void)credentials;
899
900#endif /* HAVE_LIBSSL */
901}
902
903
904/*
905 * 'httpFreeCredentials()' - Free an array of credentials.
906 */
907
908void
909httpFreeCredentials(
910 cups_array_t *credentials) /* I - Array of credentials */
911{
912 http_credential_t *credential; /* Credential */
913
914
915 for (credential = (http_credential_t *)cupsArrayFirst(credentials);
916 credential;
917 credential = (http_credential_t *)cupsArrayNext(credentials))
918 {
919 cupsArrayRemove(credentials, credential);
920 free((void *)credential->data);
921 free(credential);
922 }
923
924 cupsArrayDelete(credentials);
925}
926
927
ef416fc2 928/*
929 * 'httpGet()' - Send a GET request to the server.
930 */
931
932int /* O - Status of call (0 = success) */
568fa3fa 933httpGet(http_t *http, /* I - Connection to server */
ef416fc2 934 const char *uri) /* I - URI to get */
935{
936 return (http_send(http, HTTP_GET, uri));
937}
938
939
355e94dc
MS		 940/*
941 * 'httpGetAuthString()' - Get the current authorization string.
942 *
943 * The authorization string is set by cupsDoAuthentication() and
944 * httpSetAuthString(). Use httpGetAuthString() to retrieve the
945 * string to use with httpSetField() for the HTTP_FIELD_AUTHORIZATION
946 * value.
947 *
426c6a59 948 * @since CUPS 1.3/Mac OS X 10.5@
355e94dc
MS		 949 */
950
951char * /* O - Authorization string */
568fa3fa 952httpGetAuthString(http_t *http) /* I - Connection to server */
355e94dc
MS		 953{
954 if (http)
955 return (http->authstring);
956 else
957 return (NULL);
958}
959
960
ecdc0628 961/*
962 * 'httpGetBlocking()' - Get the blocking/non-block state of a connection.
963 *
426c6a59 964 * @since CUPS 1.2/Mac OS X 10.5@
ecdc0628 965 */
966
967int /* O - 1 if blocking, 0 if non-blocking */
568fa3fa 968httpGetBlocking(http_t *http) /* I - Connection to server */
ecdc0628 969{
970 return (http ? http->blocking : 0);
971}
972
973
974/*
975 * 'httpGetCookie()' - Get any cookie data from the response.
757d2cad 976 *
426c6a59 977 * @since CUPS 1.1.19/Mac OS X 10.3@
ecdc0628 978 */
979
980const char * /* O - Cookie data or NULL */
981httpGetCookie(http_t *http) /* I - HTTP connecion */
982{
983 return (http ? http->cookie : NULL);
984}
985
986
987/*
988 * 'httpGetFd()' - Get the file descriptor associated with a connection.
989 *
426c6a59 990 * @since CUPS 1.2/Mac OS X 10.5@
ecdc0628 991 */
992
993int /* O - File descriptor or -1 if none */
568fa3fa 994httpGetFd(http_t *http) /* I - Connection to server */
ecdc0628 995{
996 return (http ? http->fd : -1);
997}
998
999
1000/*
1001 * 'httpGetField()' - Get a field value from a request/response.
1002 */
1003
1004const char * /* O - Field value */
568fa3fa 1005httpGetField(http_t *http, /* I - Connection to server */
ecdc0628 1006 http_field_t field) /* I - Field to get */
1007{
1008 if (!http || field <= HTTP_FIELD_UNKNOWN || field >= HTTP_FIELD_MAX)
1009 return (NULL);
ef55b745 1010 else if (field == HTTP_FIELD_AUTHORIZATION &&
f7deaa1a 1011 http->field_authorization)
1012 {
1013 /*
1014 * Special case for WWW-Authenticate: as its contents can be
1015 * longer than HTTP_MAX_VALUE...
1016 */
1017
1018 return (http->field_authorization);
1019 }
ecdc0628 1020 else
1021 return (http->fields[field]);
1022}
1023
1024
1025/*
1026 * 'httpGetLength()' - Get the amount of data remaining from the
1027 * content-length or transfer-encoding fields.
1028 *
1029 * This function is deprecated and will not return lengths larger than
1030 * 2^31 - 1; use httpGetLength2() instead.
1031 *
1032 * @deprecated@
1033 */
1034
1035int /* O - Content length */
568fa3fa 1036httpGetLength(http_t *http) /* I - Connection to server */
ecdc0628 1037{
1038 /*
1039 * Get the read content length and return the 32-bit value.
1040 */
1041
1042 if (http)
1043 {
1044 httpGetLength2(http);
1045
1046 return (http->_data_remaining);
1047 }
1048 else
1049 return (-1);
1050}
1051
1052
1053/*
1054 * 'httpGetLength2()' - Get the amount of data remaining from the
1055 * content-length or transfer-encoding fields.
1056 *
1057 * This function returns the complete content length, even for
1058 * content larger than 2^31 - 1.
1059 *
426c6a59 1060 * @since CUPS 1.2/Mac OS X 10.5@
ecdc0628 1061 */
1062
1063off_t /* O - Content length */
568fa3fa 1064httpGetLength2(http_t *http) /* I - Connection to server */
ecdc0628 1065{
f11a948a
MS		 1066 DEBUG_printf(("2httpGetLength2(http=%p), state=%s", http,
1067 http_states[http->state]));
ecdc0628 1068
1069 if (!http)
1070 return (-1);
1071
1072 if (!strcasecmp(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked"))
1073 {
e07d4801 1074 DEBUG_puts("4httpGetLength2: chunked request!");
ecdc0628 1075
1076 http->data_encoding = HTTP_ENCODE_CHUNKED;
1077 http->data_remaining = 0;
1078 }
1079 else
1080 {
1081 http->data_encoding = HTTP_ENCODE_LENGTH;
1082
1083 /*
1084 * The following is a hack for HTTP servers that don't send a
1085 * content-length or transfer-encoding field...
1086 *
1087 * If there is no content-length then the connection must close
1088 * after the transfer is complete...
1089 */
1090
b86bc4cf 1091 if (!http->fields[HTTP_FIELD_CONTENT_LENGTH][0])
1092 {
1093 /*
1094 * Default content length is 0 for errors and 2^31-1 for other
1095 * successful requests...
1096 */
1097
1098 if (http->status >= HTTP_MULTIPLE_CHOICES)
1099 http->data_remaining = 0;
1100 else
1101 http->data_remaining = 2147483647;
1102 }
ecdc0628 1103 else
1104 http->data_remaining = strtoll(http->fields[HTTP_FIELD_CONTENT_LENGTH],
1105 NULL, 10);
1106
e07d4801 1107 DEBUG_printf(("4httpGetLength2: content_length=" CUPS_LLFMT,
ecdc0628 1108 CUPS_LLCAST http->data_remaining));
1109 }
1110
1111 if (http->data_remaining <= INT_MAX)
1112 http->_data_remaining = (int)http->data_remaining;
1113 else
1114 http->_data_remaining = INT_MAX;
1115
1116 return (http->data_remaining);
1117}
1118
1119
1120/*
1121 * 'httpGetStatus()' - Get the status of the last HTTP request.
1122 *
426c6a59 1123 * @since CUPS 1.2/Mac OS X 10.5@
ecdc0628 1124 */
1125
1126http_status_t /* O - HTTP status */
568fa3fa 1127httpGetStatus(http_t *http) /* I - Connection to server */
ecdc0628 1128{
1129 return (http ? http->status : HTTP_ERROR);
1130}
1131
1132
ef416fc2 1133/*
1134 * 'httpGetSubField()' - Get a sub-field value.
1135 *
1136 * @deprecated@
1137 */
1138
1139char * /* O - Value or NULL */
568fa3fa 1140httpGetSubField(http_t *http, /* I - Connection to server */
ef416fc2 1141 http_field_t field, /* I - Field index */
1142 const char *name, /* I - Name of sub-field */
1143 char *value) /* O - Value string */
1144{
1145 return (httpGetSubField2(http, field, name, value, HTTP_MAX_VALUE));
1146}
1147
1148
1149/*
1150 * 'httpGetSubField2()' - Get a sub-field value.
1151 *
426c6a59 1152 * @since CUPS 1.2/Mac OS X 10.5@
ef416fc2 1153 */
1154
1155char * /* O - Value or NULL */
568fa3fa 1156httpGetSubField2(http_t *http, /* I - Connection to server */
ef416fc2 1157 http_field_t field, /* I - Field index */
1158 const char *name, /* I - Name of sub-field */
1159 char *value, /* O - Value string */
1160 int valuelen) /* I - Size of value buffer */
1161{
1162 const char *fptr; /* Pointer into field */
1163 char temp[HTTP_MAX_VALUE], /* Temporary buffer for name */
1164 *ptr, /* Pointer into string buffer */
1165 *end; /* End of value buffer */
1166
e07d4801
MS		 1167 DEBUG_printf(("2httpGetSubField2(http=%p, field=%d, name=\"%s\", value=%p, "
1168 "valuelen=%d)", http, field, name, value, valuelen));
ef416fc2 1169
1170 if (!http || !name || !value || valuelen < 2 ||
ecdc0628 1171 field <= HTTP_FIELD_UNKNOWN || field >= HTTP_FIELD_MAX)
ef416fc2 1172 return (NULL);
1173
1174 end = value + valuelen - 1;
1175
1176 for (fptr = http->fields[field]; *fptr;)
1177 {
1178 /*
1179 * Skip leading whitespace...
1180 */
1181
7cf5915e 1182 while (_cups_isspace(*fptr))
ef416fc2 1183 fptr ++;
1184
1185 if (*fptr == ',')
1186 {
1187 fptr ++;
1188 continue;
1189 }
1190
1191 /*
1192 * Get the sub-field name...
1193 */
1194
1195 for (ptr = temp;
7cf5915e 1196 *fptr && *fptr != '=' && !_cups_isspace(*fptr) &&
ef416fc2 1197 ptr < (temp + sizeof(temp) - 1);
1198 *ptr++ = *fptr++);
1199
1200 *ptr = '\0';
1201
e07d4801 1202 DEBUG_printf(("4httpGetSubField2: name=\"%s\"", temp));
ef416fc2 1203
1204 /*
1205 * Skip trailing chars up to the '='...
1206 */
1207
7cf5915e 1208 while (_cups_isspace(*fptr))
ef416fc2 1209 fptr ++;
1210
1211 if (!*fptr)
1212 break;
1213
1214 if (*fptr != '=')
1215 continue;
1216
1217 /*
1218 * Skip = and leading whitespace...
1219 */
1220
1221 fptr ++;
1222
7cf5915e 1223 while (_cups_isspace(*fptr))
ef416fc2 1224 fptr ++;
1225
1226 if (*fptr == '\"')
1227 {
1228 /*
1229 * Read quoted string...
1230 */
1231
1232 for (ptr = value, fptr ++;
1233 *fptr && *fptr != '\"' && ptr < end;
1234 *ptr++ = *fptr++);
1235
1236 *ptr = '\0';
1237
1238 while (*fptr && *fptr != '\"')
1239 fptr ++;
1240
1241 if (*fptr)
1242 fptr ++;
1243 }
1244 else
1245 {
1246 /*
1247 * Read unquoted string...
1248 */
1249
1250 for (ptr = value;
7cf5915e 1251 *fptr && !_cups_isspace(*fptr) && *fptr != ',' && ptr < end;
ef416fc2 1252 *ptr++ = *fptr++);
1253
1254 *ptr = '\0';
1255
7cf5915e 1256 while (*fptr && !_cups_isspace(*fptr) && *fptr != ',')
ef416fc2 1257 fptr ++;
1258 }
1259
e07d4801 1260 DEBUG_printf(("4httpGetSubField2: value=\"%s\"", value));
ef416fc2 1261
1262 /*
1263 * See if this is the one...
1264 */
1265
1266 if (!strcmp(name, temp))
e07d4801
MS		 1267 {
1268 DEBUG_printf(("3httpGetSubField2: Returning \"%s\"", value));
ef416fc2 1269 return (value);
e07d4801 1270 }
ef416fc2 1271 }
1272
1273 value[0] = '\0';
1274
e07d4801
MS		 1275 DEBUG_puts("3httpGetSubField2: Returning NULL");
1276
ef416fc2 1277 return (NULL);
1278}
1279
1280
ef416fc2 1281/*
1282 * 'httpGets()' - Get a line of text from a HTTP connection.
1283 */
1284
1285char * /* O - Line or NULL */
1286httpGets(char *line, /* I - Line to read into */
1287 int length, /* I - Max length of buffer */
568fa3fa 1288 http_t *http) /* I - Connection to server */
ef416fc2 1289{
1290 char *lineptr, /* Pointer into line */
1291 *lineend, /* End of line */
1292 *bufptr, /* Pointer into input buffer */
1293 *bufend; /* Pointer to end of buffer */
1294 int bytes, /* Number of bytes read */
1295 eol; /* End-of-line? */
1296
1297
e07d4801 1298 DEBUG_printf(("2httpGets(line=%p, length=%d, http=%p)", line, length, http));
ef416fc2 1299
1300 if (http == NULL || line == NULL)
1301 return (NULL);
1302
1303 /*
1304 * Read a line from the buffer...
1305 */
f11a948a
MS		 1306
1307 http->error = 0;
1308 lineptr = line;
1309 lineend = line + length - 1;
1310 eol = 0;
ef416fc2 1311
1312 while (lineptr < lineend)
1313 {
1314 /*
1315 * Pre-load the buffer as needed...
1316 */
1317
1318#ifdef WIN32
1319 WSASetLastError(0);
1320#else
1321 errno = 0;
1322#endif /* WIN32 */
1323
1324 while (http->used == 0)
1325 {
1326 /*
1327 * No newline; see if there is more data to be read...
1328 */
1329
38e73f87 1330 if (!http->blocking && !_httpWait(http, 10000, 1))
89d46774 1331 {
e07d4801 1332 DEBUG_puts("3httpGets: Timed out!");
b86bc4cf 1333#ifdef WIN32
1334 http->error = WSAETIMEDOUT;
1335#else
89d46774 1336 http->error = ETIMEDOUT;
b86bc4cf 1337#endif /* WIN32 */
ef416fc2 1338 return (NULL);
89d46774 1339 }
ef416fc2 1340
1341#ifdef HAVE_SSL
1342 if (http->tls)
1343 bytes = http_read_ssl(http, http->buffer + http->used,
1344 HTTP_MAX_BUFFER - http->used);
1345 else
1346#endif /* HAVE_SSL */
1347 bytes = recv(http->fd, http->buffer + http->used,
1348 HTTP_MAX_BUFFER - http->used, 0);
1349
e07d4801 1350 DEBUG_printf(("4httpGets: read %d bytes...", bytes));
ef416fc2 1351
1352 if (bytes < 0)
1353 {
1354 /*
1355 * Nope, can't get a line this time...
1356 */
1357
1358#ifdef WIN32
cc754834
MS		 1359 DEBUG_printf(("3httpGets: recv() error %d!", WSAGetLastError()));
1360
10d09e33 1361 if (WSAGetLastError() == WSAEINTR)
cc754834 1362 continue;
10d09e33
MS		 1363 else if (WSAGetLastError() == WSAEWOULDBLOCK)
1364 {
1365 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
1366 continue;
1367
1368 http->error = WSAGetLastError();
1369 }
cc754834 1370 else if (WSAGetLastError() != http->error)
ef416fc2 1371 {
1372 http->error = WSAGetLastError();
1373 continue;
1374 }
1375
ef416fc2 1376#else
e07d4801 1377 DEBUG_printf(("3httpGets: recv() error %d!", errno));
ef416fc2 1378
10d09e33 1379 if (errno == EINTR)
ef416fc2 1380 continue;
10d09e33
MS		 1381 else if (errno == EWOULDBLOCK || errno == EAGAIN)
1382 {
1383 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
1384 continue;
1385 else if (!http->timeout_cb && errno == EAGAIN)
1386 continue;
1387
1388 http->error = errno;
1389 }
ef416fc2 1390 else if (errno != http->error)
1391 {
1392 http->error = errno;
1393 continue;
1394 }
1395#endif /* WIN32 */
1396
1397 return (NULL);
1398 }
1399 else if (bytes == 0)
1400 {
1401 http->error = EPIPE;
1402
1403 return (NULL);
1404 }
1405
1406 /*
1407 * Yup, update the amount used...
1408 */
1409
1410 http->used += bytes;
1411 }
1412
1413 /*
1414 * Now copy as much of the current line as possible...
1415 */
1416
1417 for (bufptr = http->buffer, bufend = http->buffer + http->used;
1418 lineptr < lineend && bufptr < bufend;)
1419 {
1420 if (*bufptr == 0x0a)
1421 {
1422 eol = 1;
1423 bufptr ++;
1424 break;
1425 }
1426 else if (*bufptr == 0x0d)
1427 bufptr ++;
1428 else
1429 *lineptr++ = *bufptr++;
1430 }
1431
b86bc4cf 1432 http->used -= (int)(bufptr - http->buffer);
ef416fc2 1433 if (http->used > 0)
1434 memmove(http->buffer, bufptr, http->used);
1435
1436 if (eol)
1437 {
1438 /*
1439 * End of line...
1440 */
1441
1442 http->activity = time(NULL);
1443
1444 *lineptr = '\0';
ef55b745 1445
e07d4801 1446 DEBUG_printf(("3httpGets: Returning \"%s\"", line));
ef416fc2 1447
1448 return (line);
1449 }
1450 }
1451
e07d4801 1452 DEBUG_puts("3httpGets: No new line available!");
ef416fc2 1453
1454 return (NULL);
1455}
1456
1457
1458/*
1459 * 'httpHead()' - Send a HEAD request to the server.
1460 */
1461
1462int /* O - Status of call (0 = success) */
568fa3fa 1463httpHead(http_t *http, /* I - Connection to server */
ef416fc2 1464 const char *uri) /* I - URI for head */
1465{
e07d4801 1466 DEBUG_printf(("httpHead(http=%p, uri=\"%s\")", http, uri));
ef416fc2 1467 return (http_send(http, HTTP_HEAD, uri));
1468}
1469
1470
1471/*
1472 * 'httpInitialize()' - Initialize the HTTP interface library and set the
1473 * default HTTP proxy (if any).
1474 */
1475
1476void
1477httpInitialize(void)
1478{
6d2f911b
MS		 1479 static int initialized = 0; /* Have we been called before? */
1480#ifdef WIN32
1481 WSADATA winsockdata; /* WinSock data */
1482#endif /* WIN32 */
ef416fc2 1483#ifdef HAVE_LIBSSL
6d2f911b
MS		 1484 int i; /* Looping var */
1485 unsigned char data[1024]; /* Seed data */
ef416fc2 1486#endif /* HAVE_LIBSSL */
1487
ef416fc2 1488
6d2f911b
MS		 1489 _cupsGlobalLock();
1490 if (initialized)
1491 {
1492 _cupsGlobalUnlock();
1493 return;
1494 }
1495
1496#ifdef WIN32
c7017ecc 1497 WSAStartup(MAKEWORD(2,2), &winsockdata);
ef416fc2 1498
fa73b229 1499#elif !defined(SO_NOSIGPIPE)
ef416fc2 1500 /*
1501 * Ignore SIGPIPE signals...
1502 */
1503
fa73b229 1504# ifdef HAVE_SIGSET
1505 sigset(SIGPIPE, SIG_IGN);
6d2f911b 1506
fa73b229 1507# elif defined(HAVE_SIGACTION)
1508 struct sigaction action; /* POSIX sigaction data */
1509
1510
ef416fc2 1511 memset(&action, 0, sizeof(action));
1512 action.sa_handler = SIG_IGN;
1513 sigaction(SIGPIPE, &action, NULL);
6d2f911b 1514
fa73b229 1515# else
ef416fc2 1516 signal(SIGPIPE, SIG_IGN);
fa73b229 1517# endif /* !SO_NOSIGPIPE */
ef416fc2 1518#endif /* WIN32 */
1519
1520#ifdef HAVE_GNUTLS
6d2f911b
MS		 1521 /*
1522 * Make sure we handle threading properly...
1523 */
1524
1525# ifdef HAVE_PTHREAD_H
1526 gcry_control(GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
1527# endif /* HAVE_PTHREAD_H */
1528
1529 /*
1530 * Initialize GNU TLS...
1531 */
1532
ef416fc2 1533 gnutls_global_init();
ef416fc2 1534
6d2f911b
MS		 1535#elif defined(HAVE_LIBSSL)
1536 /*
1537 * Initialize OpenSSL...
1538 */
1539
ef416fc2 1540 SSL_load_error_strings();
1541 SSL_library_init();
1542
6d2f911b
MS		 1543 /*
1544 * Set the threading callbacks...
1545 */
1546
1547 http_locks = calloc(CRYPTO_num_locks(), sizeof(_cups_mutex_t));
1548# ifdef HAVE_PTHREAD_H
1549 for (i = 0; i < CRYPTO_num_locks(); i ++)
1550 pthread_mutex_init(http_locks + i, NULL);
1551# endif /* HAVE_PTHREAD_H */
1552
1553 CRYPTO_set_id_callback(http_threadid_cb);
1554 CRYPTO_set_locking_callback(http_locking_cb);
1555
ef416fc2 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
1671 if (!http->blocking && !httpWait(http, 10000))
1672 return (0);
1673
1674 if (http->data_remaining > sizeof(http->buffer))
1675 bytes = sizeof(http->buffer);
1676 else
1677 bytes = http->data_remaining;
1678
1679#ifdef HAVE_SSL
1680 if (http->tls)
1681 bytes = http_read_ssl(http, http->buffer, bytes);
1682 else
1683#endif /* HAVE_SSL */
1684 {
1685 DEBUG_printf(("2_httpPeek: reading %d bytes from socket into buffer...",
1686 (int)bytes));
1687
1688 bytes = recv(http->fd, http->buffer, bytes, 0);
1689
1690 DEBUG_printf(("2_httpPeek: read %d bytes from socket into buffer...",
1691 (int)bytes));
1692 }
1693
1694 if (bytes > 0)
1695 http->used = bytes;
1696 else if (bytes < 0)
1697 {
1698#ifdef WIN32
cc754834
MS		 1699 if (WSAGetLastError() != WSAEINTR && WSAGetLastError() != WSAEWOULDBLOCK)
1700 {
1701 http->error = WSAGetLastError();
1702 return (-1);
1703 }
6d2f911b
MS		 1704#else
1705 if (errno != EINTR && errno != EAGAIN)
1706 {
1707 http->error = errno;
1708 return (-1);
1709 }
1710#endif /* WIN32 */
1711 }
1712 else
1713 {
1714 http->error = EPIPE;
1715 return (0);
1716 }
1717 }
1718
1719 if (http->used > 0)
1720 {
1721 if (length > (size_t)http->used)
1722 length = (size_t)http->used;
1723
1724 bytes = (ssize_t)length;
1725
1726 DEBUG_printf(("2_httpPeek: grabbing %d bytes from input buffer...",
1727 (int)bytes));
1728
1729 memcpy(buffer, http->buffer, length);
1730 }
1731 else
1732 bytes = 0;
1733
1734 if (bytes < 0)
1735 {
1736#ifdef WIN32
cc754834
MS		 1737 if (WSAGetLastError() == WSAEINTR || WSAGetLastError() == WSAEWOULDBLOCK)
1738 bytes = 0;
1739 else
1740 http->error = WSAGetLastError();
6d2f911b
MS		 1741#else
1742 if (errno == EINTR || errno == EAGAIN)
1743 bytes = 0;
1744 else
1745 http->error = errno;
1746#endif /* WIN32 */
1747 }
1748 else if (bytes == 0)
1749 {
1750 http->error = EPIPE;
1751 return (0);
1752 }
1753
1754#ifdef DEBUG
1755 http_debug_hex("_httpPeek", buffer, (int)bytes);
1756#endif /* DEBUG */
1757
1758 return (bytes);
1759}
1760
1761
ef416fc2 1762/*
1763 * 'httpPost()' - Send a POST request to the server.
1764 */
1765
1766int /* O - Status of call (0 = success) */
568fa3fa 1767httpPost(http_t *http, /* I - Connection to server */
ef416fc2 1768 const char *uri) /* I - URI for post */
1769{
1770 return (http_send(http, HTTP_POST, uri));
1771}
1772
1773
1774/*
1775 * 'httpPrintf()' - Print a formatted string to a HTTP connection.
ecdc0628 1776 *
1777 * @private@
ef416fc2 1778 */
1779
1780int /* O - Number of bytes written */
568fa3fa 1781httpPrintf(http_t *http, /* I - Connection to server */
ef416fc2 1782 const char *format, /* I - printf-style format string */
1783 ...) /* I - Additional args as needed */
1784{
1785 int bytes; /* Number of bytes to write */
1786 char buf[16384]; /* Buffer for formatted string */
1787 va_list ap; /* Variable argument pointer */
1788
1789
e07d4801 1790 DEBUG_printf(("2httpPrintf(http=%p, format=\"%s\", ...)", http, format));
ef416fc2 1791
1792 va_start(ap, format);
1793 bytes = vsnprintf(buf, sizeof(buf), format, ap);
1794 va_end(ap);
1795
e07d4801 1796 DEBUG_printf(("3httpPrintf: %s", buf));
ef416fc2 1797
d09495fa 1798 if (http->data_encoding == HTTP_ENCODE_FIELDS)
1799 return (httpWrite2(http, buf, bytes));
1800 else
ef416fc2 1801 {
d09495fa 1802 if (http->wused)
1803 {
e07d4801 1804 DEBUG_puts("4httpPrintf: flushing existing data...");
ef416fc2 1805
d09495fa 1806 if (httpFlushWrite(http) < 0)
1807 return (-1);
1808 }
ef416fc2 1809
d09495fa 1810 return (http_write(http, buf, bytes));
1811 }
ef416fc2 1812}
1813
1814
1815/*
1816 * 'httpPut()' - Send a PUT request to the server.
1817 */
1818
1819int /* O - Status of call (0 = success) */
568fa3fa 1820httpPut(http_t *http, /* I - Connection to server */
ef416fc2 1821 const char *uri) /* I - URI to put */
1822{
e07d4801 1823 DEBUG_printf(("httpPut(http=%p, uri=\"%s\")", http, uri));
ef416fc2 1824 return (http_send(http, HTTP_PUT, uri));
1825}
1826
1827
1828/*
1829 * 'httpRead()' - Read data from a HTTP connection.
a4d04587 1830 *
1831 * This function is deprecated. Use the httpRead2() function which can
1832 * read more than 2GB of data.
1833 *
1834 * @deprecated@
ef416fc2 1835 */
1836
1837int /* O - Number of bytes read */
568fa3fa 1838httpRead(http_t *http, /* I - Connection to server */
ef416fc2 1839 char *buffer, /* I - Buffer for data */
1840 int length) /* I - Maximum number of bytes */
1841{
a4d04587 1842 return ((int)httpRead2(http, buffer, length));
1843}
1844
1845
1846/*
1847 * 'httpRead2()' - Read data from a HTTP connection.
ecdc0628 1848 *
426c6a59 1849 * @since CUPS 1.2/Mac OS X 10.5@
a4d04587 1850 */
1851
1852ssize_t /* O - Number of bytes read */
568fa3fa 1853httpRead2(http_t *http, /* I - Connection to server */
a4d04587 1854 char *buffer, /* I - Buffer for data */
1855 size_t length) /* I - Maximum number of bytes */
1856{
1857 ssize_t bytes; /* Bytes read */
ef416fc2 1858 char len[32]; /* Length string */
1859
1860
e07d4801 1861 DEBUG_printf(("httpRead2(http=%p, buffer=%p, length=" CUPS_LLFMT ")",
a603edef 1862 http, buffer, CUPS_LLCAST length));
ef416fc2 1863
1864 if (http == NULL || buffer == NULL)
1865 return (-1);
1866
1867 http->activity = time(NULL);
f11a948a 1868 http->error = 0;
ef416fc2 1869
1870 if (length <= 0)
1871 return (0);
1872
1873 if (http->data_encoding == HTTP_ENCODE_CHUNKED &&
1874 http->data_remaining <= 0)
1875 {
e07d4801 1876 DEBUG_puts("2httpRead2: Getting chunk length...");
ef416fc2 1877
1878 if (httpGets(len, sizeof(len), http) == NULL)
1879 {
e07d4801 1880 DEBUG_puts("1httpRead2: Could not get length!");
ef416fc2 1881 return (0);
1882 }
1883
1884 http->data_remaining = strtoll(len, NULL, 16);
1885 if (http->data_remaining < 0)
1886 {
e07d4801 1887 DEBUG_puts("1httpRead2: Negative chunk length!");
ef416fc2 1888 return (0);
1889 }
1890 }
1891
e07d4801 1892 DEBUG_printf(("2httpRead2: data_remaining=" CUPS_LLFMT,
ef416fc2 1893 CUPS_LLCAST http->data_remaining));
1894
1895 if (http->data_remaining <= 0)
1896 {
1897 /*
1898 * A zero-length chunk ends a transfer; unless we are reading POST
1899 * data, go idle...
1900 */
1901
1902 if (http->data_encoding == HTTP_ENCODE_CHUNKED)
1903 httpGets(len, sizeof(len), http);
1904
1905 if (http->state == HTTP_POST_RECV)
1906 http->state ++;
1907 else
1908 http->state = HTTP_WAITING;
1909
1910 /*
1911 * Prevent future reads for this request...
1912 */
1913
1914 http->data_encoding = HTTP_ENCODE_LENGTH;
1915
1916 return (0);
1917 }
b86bc4cf 1918 else if (length > (size_t)http->data_remaining)
1919 length = (size_t)http->data_remaining;
ef416fc2 1920
1921 if (http->used == 0 && length <= 256)
1922 {
1923 /*
1924 * Buffer small reads for better performance...
1925 */
1926
ed486911 1927 if (!http->blocking && !httpWait(http, 10000))
ef416fc2 1928 return (0);
1929
1930 if (http->data_remaining > sizeof(http->buffer))
1931 bytes = sizeof(http->buffer);
1932 else
1933 bytes = http->data_remaining;
1934
1935#ifdef HAVE_SSL
1936 if (http->tls)
1937 bytes = http_read_ssl(http, http->buffer, bytes);
1938 else
1939#endif /* HAVE_SSL */
1940 {
e07d4801 1941 DEBUG_printf(("2httpRead2: reading %d bytes from socket into buffer...",
a603edef 1942 (int)bytes));
ef416fc2 1943
1944 bytes = recv(http->fd, http->buffer, bytes, 0);
1945
e07d4801 1946 DEBUG_printf(("2httpRead2: read %d bytes from socket into buffer...",
a603edef 1947 (int)bytes));
ef416fc2 1948 }
1949
1950 if (bytes > 0)
1951 http->used = bytes;
1952 else if (bytes < 0)
1953 {
1954#ifdef WIN32
10d09e33 1955 if (WSAGetLastError() != WSAEINTR)
cc754834
MS		 1956 {
1957 http->error = WSAGetLastError();
1958 return (-1);
1959 }
10d09e33
MS		 1960 else if (WSAGetLastError() == WSAEWOULDBLOCK)
1961 {
1962 if (!http->timeout_cb || !(*http->timeout_cb)(http, http->timeout_data))
1963 {
1964 http->error = WSAEWOULDBLOCK;
1965 return (-1);
1966 }
1967 }
ef416fc2 1968#else
10d09e33
MS		 1969 if (errno == EWOULDBLOCK || errno == EAGAIN)
1970 {
1971 if (http->timeout_cb && !(*http->timeout_cb)(http, http->timeout_data))
1972 {
1973 http->error = errno;
1974 return (-1);
1975 }
1976 else if (!http->timeout_cb && errno != EAGAIN)
1977 {
1978 http->error = errno;
1979 return (-1);
1980 }
1981 }
1982 else if (errno != EINTR)
ef416fc2 1983 {
1984 http->error = errno;
1985 return (-1);
1986 }
1987#endif /* WIN32 */
1988 }
1989 else
1990 {
1991 http->error = EPIPE;
1992 return (0);
1993 }
1994 }
1995
1996 if (http->used > 0)
1997 {
b86bc4cf 1998 if (length > (size_t)http->used)
1999 length = (size_t)http->used;
ef416fc2 2000
b86bc4cf 2001 bytes = (ssize_t)length;
ef416fc2 2002
e07d4801 2003 DEBUG_printf(("2httpRead2: grabbing %d bytes from input buffer...",
a603edef 2004 (int)bytes));
ef416fc2 2005
2006 memcpy(buffer, http->buffer, length);
b86bc4cf 2007 http->used -= (int)length;
ef416fc2 2008
2009 if (http->used > 0)
2010 memmove(http->buffer, http->buffer + length, http->used);
2011 }
2012#ifdef HAVE_SSL
2013 else if (http->tls)
2014 {
ed486911 2015 if (!http->blocking && !httpWait(http, 10000))
ef416fc2 2016 return (0);
2017
b86bc4cf 2018 bytes = (ssize_t)http_read_ssl(http, buffer, (int)length);
ef416fc2 2019 }
2020#endif /* HAVE_SSL */
2021 else
2022 {
ed486911 2023 if (!http->blocking && !httpWait(http, 10000))
ef416fc2 2024 return (0);
2025
e07d4801 2026 DEBUG_printf(("2httpRead2: reading " CUPS_LLFMT " bytes from socket...",
a603edef 2027 CUPS_LLCAST length));
ef416fc2 2028
b86bc4cf 2029#ifdef WIN32
10d09e33
MS		 2030 while ((bytes = (ssize_t)recv(http->fd, buffer, (int)length, 0)) < 0)
2031 {
2032 if (WSAGetLastError() == WSAEWOULDBLOCK)
2033 {
2034 if (!http->timeout_cb || !(*http->timeout_cb)(http, http->timeout_data))
2035 break;
2036 }
2037 else if (WSAGetLastError() != WSAEINTR)
cc754834 2038 break;
10d09e33 2039 }
b86bc4cf 2040#else
ef416fc2 2041 while ((bytes = recv(http->fd, buffer, length, 0)) < 0)
10d09e33
MS		 2042 {
2043 if (errno == EWOULDBLOCK || errno == EAGAIN)
2044 {
2045 if (http->timeout_cb && !(*http->timeout_cb)(http, http->timeout_data))
2046 break;
2047 else if (!http->timeout_cb && errno != EAGAIN)
2048 break;
2049 }
2050 else if (errno != EINTR)
ef416fc2 2051 break;
10d09e33 2052 }
b86bc4cf 2053#endif /* WIN32 */
ef416fc2 2054
e07d4801 2055 DEBUG_printf(("2httpRead2: read " CUPS_LLFMT " bytes from socket...",
a603edef 2056 CUPS_LLCAST bytes));
ef416fc2 2057 }
2058
2059 if (bytes > 0)
2060 {
2061 http->data_remaining -= bytes;
2062
2063 if (http->data_remaining <= INT_MAX)
2064 http->_data_remaining = (int)http->data_remaining;
2065 else
2066 http->_data_remaining = INT_MAX;
2067 }
2068 else if (bytes < 0)
2069 {
2070#ifdef WIN32
10d09e33 2071 if (WSAGetLastError() == WSAEINTR)
cc754834
MS		 2072 bytes = 0;
2073 else
2074 http->error = WSAGetLastError();
ef416fc2 2075#else
10d09e33 2076 if (errno == EINTR || (errno == EAGAIN && !http->timeout_cb))
ef416fc2 2077 bytes = 0;
2078 else
2079 http->error = errno;
2080#endif /* WIN32 */
2081 }
2082 else
2083 {
2084 http->error = EPIPE;
2085 return (0);
2086 }
2087
2088 if (http->data_remaining == 0)
2089 {
2090 if (http->data_encoding == HTTP_ENCODE_CHUNKED)
2091 httpGets(len, sizeof(len), http);
2092
2093 if (http->data_encoding != HTTP_ENCODE_CHUNKED)
2094 {
2095 if (http->state == HTTP_POST_RECV)
2096 http->state ++;
2097 else
2098 http->state = HTTP_WAITING;
2099 }
2100 }
2101
2102#ifdef DEBUG
ae71f5de 2103 http_debug_hex("httpRead2", buffer, (int)bytes);
ef416fc2 2104#endif /* DEBUG */
2105
2106 return (bytes);
2107}
2108
2109
2110#if defined(HAVE_SSL) && defined(HAVE_CDSASSL)
2111/*
411affcf 2112 * '_httpReadCDSA()' - Read function for the CDSA library.
ef416fc2 2113 */
2114
2115OSStatus /* O - -1 on error, 0 on success */
2116_httpReadCDSA(
2117 SSLConnectionRef connection, /* I - SSL/TLS connection */
2118 void *data, /* I - Data buffer */
2119 size_t *dataLength) /* IO - Number of bytes */
2120{
411affcf 2121 OSStatus result; /* Return value */
2122 ssize_t bytes; /* Number of bytes read */
2123 http_t *http; /* HTTP connection */
2124
2125
2126 http = (http_t *)connection;
e53920b9 2127
411affcf 2128 if (!http->blocking)
2129 {
2130 /*
2131 * Make sure we have data before we read...
2132 */
e53920b9 2133
38e73f87 2134 if (!_httpWait(http, 10000, 0))
411affcf 2135 {
2136 http->error = ETIMEDOUT;
2137 return (-1);
2138 }
2139 }
ef416fc2 2140
b423cd4c 2141 do
411affcf 2142 {
2143 bytes = recv(http->fd, data, *dataLength, 0);
2144 }
e07d4801 2145 while (bytes == -1 && (errno == EINTR || errno == EAGAIN));
fa73b229 2146
b423cd4c 2147 if (bytes == *dataLength)
411affcf 2148 {
b423cd4c 2149 result = 0;
411affcf 2150 }
b423cd4c 2151 else if (bytes > 0)
2152 {
2153 *dataLength = bytes;
2154 result = errSSLWouldBlock;
2155 }
2156 else
2157 {
2158 *dataLength = 0;
fa73b229 2159
2160 if (bytes == 0)
ed486911 2161 result = errSSLClosedGraceful;
b423cd4c 2162 else if (errno == EAGAIN)
2163 result = errSSLWouldBlock;
b423cd4c 2164 else
ed486911 2165 result = errSSLClosedAbort;
ef416fc2 2166 }
b423cd4c 2167
411affcf 2168 return (result);
ef416fc2 2169}
2170#endif /* HAVE_SSL && HAVE_CDSASSL */
2171
2172
411affcf 2173#if defined(HAVE_SSL) && defined(HAVE_GNUTLS)
2174/*
2175 * '_httpReadGNUTLS()' - Read function for the GNU TLS library.
2176 */
2177
2178ssize_t /* O - Number of bytes read or -1 on error */
2179_httpReadGNUTLS(
568fa3fa 2180 gnutls_transport_ptr ptr, /* I - Connection to server */
411affcf 2181 void *data, /* I - Buffer */
2182 size_t length) /* I - Number of bytes to read */
2183{
2184 http_t *http; /* HTTP connection */
2185
2186
2187 http = (http_t *)ptr;
2188
2189 if (!http->blocking)
2190 {
2191 /*
2192 * Make sure we have data before we read...
2193 */
2194
38e73f87 2195 if (!_httpWait(http, 10000, 0))
411affcf 2196 {
2197 http->error = ETIMEDOUT;
2198 return (-1);
2199 }
2200 }
2201
2202 return (recv(http->fd, data, length, 0));
2203}
2204#endif /* HAVE_SSL && HAVE_GNUTLS */
2205
2206
ef416fc2 2207/*
ecdc0628 2208 * 'httpReconnect()' - Reconnect to a HTTP server.
ef416fc2 2209 */
2210
2211int /* O - 0 on success, non-zero on failure */
568fa3fa 2212httpReconnect(http_t *http) /* I - Connection to server */
ef416fc2 2213{
2214 http_addrlist_t *addr; /* Connected address */
1ff0402e
MS		 2215#ifdef DEBUG
2216 http_addrlist_t *current; /* Current address */
2217 char temp[256]; /* Temporary address string */
2218#endif /* DEBUG */
ef416fc2 2219
2220
e07d4801 2221 DEBUG_printf(("httpReconnect(http=%p)", http));
ef416fc2 2222
2223 if (!http)
2224 return (-1);
2225
2226#ifdef HAVE_SSL
2227 if (http->tls)
1ff0402e 2228 {
e07d4801 2229 DEBUG_puts("2httpReconnect: Shutting down SSL/TLS...");
ef416fc2 2230 http_shutdown_ssl(http);
1ff0402e 2231 }
ef416fc2 2232#endif /* HAVE_SSL */
2233
2234 /*
2235 * Close any previously open socket...
2236 */
2237
2238 if (http->fd >= 0)
bd7854cb 2239 {
e07d4801 2240 DEBUG_printf(("2httpReconnect: Closing socket %d...", http->fd));
1ff0402e 2241
ef416fc2 2242#ifdef WIN32
2243 closesocket(http->fd);
2244#else
2245 close(http->fd);
2246#endif /* WIN32 */
2247
bd7854cb 2248 http->fd = -1;
2249 }
2250
ef416fc2 2251 /*
2252 * Connect to the server...
2253 */
2254
1ff0402e
MS		 2255#ifdef DEBUG
2256 for (current = http->addrlist; current; current = current->next)
e07d4801 2257 DEBUG_printf(("2httpReconnect: Address %s:%d",
1ff0402e
MS		 2258 httpAddrString(&(current->addr), temp, sizeof(temp)),
2259 _httpAddrPort(&(current->addr))));
2260#endif /* DEBUG */
2261
ef416fc2 2262 if ((addr = httpAddrConnect(http->addrlist, &(http->fd))) == NULL)
2263 {
2264 /*
2265 * Unable to connect...
2266 */
2267
2268#ifdef WIN32
2269 http->error = WSAGetLastError();
2270#else
2271 http->error = errno;
2272#endif /* WIN32 */
2273 http->status = HTTP_ERROR;
2274
e07d4801 2275 DEBUG_printf(("1httpReconnect: httpAddrConnect failed: %s",
1ff0402e
MS		 2276 strerror(http->error)));
2277
ef416fc2 2278 return (-1);
2279 }
2280
e07d4801 2281 DEBUG_printf(("2httpReconnect: New socket=%d", http->fd));
1ff0402e 2282
10d09e33
MS		 2283 if (http->timeout_value.tv_sec > 0)
2284 {
c8fef167
MS		 2285#ifdef WIN32
2286 DWORD timeout_value = http->timeout_value.tv_sec * 1000 +
2287 http->timeout_value.tv_usec / 1000;
2288 /* Timeout in milliseconds */
2289
2290 setsockopt(http->fd, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout_value,
2291 sizeof(timeout_value));
2292 setsockopt(http->fd, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout_value,
2293 sizeof(timeout_value));
2294#else
10d09e33
MS		 2295 setsockopt(http->fd, SOL_SOCKET, SO_RCVTIMEO, &(http->timeout_value),
2296 sizeof(http->timeout_value));
2297 setsockopt(http->fd, SOL_SOCKET, SO_SNDTIMEO, &(http->timeout_value),
2298 sizeof(http->timeout_value));
c8fef167 2299#endif /* WIN32 */
10d09e33
MS		 2300 }
2301
ef416fc2 2302 http->hostaddr = &(addr->addr);
2303 http->error = 0;
2304 http->status = HTTP_CONTINUE;
2305
2306#ifdef HAVE_SSL
2307 if (http->encryption == HTTP_ENCRYPT_ALWAYS)
2308 {
2309 /*
2310 * Always do encryption via SSL.
2311 */
2312
2313 if (http_setup_ssl(http) != 0)
2314 {
f7deaa1a 2315# ifdef WIN32
ef416fc2 2316 closesocket(http->fd);
f7deaa1a 2317# else
ef416fc2 2318 close(http->fd);
f7deaa1a 2319# endif /* WIN32 */
ef416fc2 2320
2321 return (-1);
2322 }
2323 }
2324 else if (http->encryption == HTTP_ENCRYPT_REQUIRED)
2325 return (http_upgrade(http));
2326#endif /* HAVE_SSL */
2327
e07d4801 2328 DEBUG_printf(("1httpReconnect: Connected to %s:%d...",
1ff0402e
MS		 2329 httpAddrString(http->hostaddr, temp, sizeof(temp)),
2330 _httpAddrPort(http->hostaddr)));
2331
ef416fc2 2332 return (0);
2333}
2334
2335
355e94dc
MS		 2336/*
2337 * 'httpSetAuthString()' - Set the current authorization string.
2338 *
2339 * This function just stores a copy of the current authorization string in
2340 * the HTTP connection object. You must still call httpSetField() to set
2341 * HTTP_FIELD_AUTHORIZATION prior to issuing a HTTP request using httpGet(),
2342 * httpHead(), httpOptions(), httpPost, or httpPut().
2343 *
426c6a59 2344 * @since CUPS 1.3/Mac OS X 10.5@
355e94dc
MS		 2345 */
2346
2347void
568fa3fa 2348httpSetAuthString(http_t *http, /* I - Connection to server */
355e94dc
MS		 2349 const char *scheme, /* I - Auth scheme (NULL to clear it) */
2350 const char *data) /* I - Auth data (NULL for none) */
2351{
2352 /*
2353 * Range check input...
2354 */
2355
2356 if (!http)
2357 return;
2358
2359 if (http->authstring && http->authstring != http->_authstring)
2360 free(http->authstring);
2361
2362 http->authstring = http->_authstring;
2363
2364 if (scheme)
2365 {
2366 /*
2367 * Set the current authorization string...
2368 */
2369
2370 int len = (int)strlen(scheme) + (data ? (int)strlen(data) + 1 : 0) + 1;
91c84a35 2371 char *temp;
355e94dc
MS		 2372
2373 if (len > (int)sizeof(http->_authstring))
91c84a35
MS		 2374 {
2375 if ((temp = malloc(len)) == NULL)
2376 len = sizeof(http->_authstring);
2377 else
2378 http->authstring = temp;
2379 }
355e94dc
MS		 2380
2381 if (data)
2382 snprintf(http->authstring, len, "%s %s", scheme, data);
2383 else
2384 strlcpy(http->authstring, scheme, len);
2385 }
2386 else
2387 {
2388 /*
2389 * Clear the current authorization string...
2390 */
2391
2392 http->_authstring[0] = '\0';
2393 }
2394}
2395
2396
7cf5915e
MS		 2397/*
2398 * 'httpSetCredentials()' - Set the credentials associated with an encrypted
2399 * connection.
2400 *
2401 * @since CUPS 1.5@
2402 */
2403
2404int /* O - Status of call (0 = success) */
2405httpSetCredentials(http_t *http, /* I - Connection to server */
2406 cups_array_t *credentials) /* I - Array of credentials */
2407{
2408 if (!http || cupsArrayCount(credentials) < 1)
2409 return (-1);
2410
2411 _httpFreeCredentials(http->tls_credentials);
2412
2413 http->tls_credentials = _httpConvertCredentials(credentials);
2414
2415 return (http->tls_credentials ? 0 : -1);
2416}
2417
2418
ef416fc2 2419/*
6d2f911b 2420 * 'httpSetCookie()' - Set the cookie value(s).
ef416fc2 2421 *
426c6a59 2422 * @since CUPS 1.1.19/Mac OS X 10.3@
ef416fc2 2423 */
2424
2425void
2426httpSetCookie(http_t *http, /* I - Connection */
2427 const char *cookie) /* I - Cookie string */
2428{
2429 if (!http)
2430 return;
2431
2432 if (http->cookie)
2433 free(http->cookie);
2434
2435 if (cookie)
2436 http->cookie = strdup(cookie);
2437 else
2438 http->cookie = NULL;
2439}
2440
2441
b423cd4c 2442/*
2443 * 'httpSetExpect()' - Set the Expect: header in a request.
2444 *
2445 * Currently only HTTP_CONTINUE is supported for the "expect" argument.
2446 *
426c6a59 2447 * @since CUPS 1.2/Mac OS X 10.5@
b423cd4c 2448 */
2449
2450void
568fa3fa 2451httpSetExpect(http_t *http, /* I - Connection to server */
b423cd4c 2452 http_status_t expect) /* I - HTTP status to expect (HTTP_CONTINUE) */
2453{
2454 if (http)
2455 http->expect = expect;
2456}
2457
2458
ef416fc2 2459/*
2460 * 'httpSetField()' - Set the value of an HTTP header.
2461 */
2462
2463void
568fa3fa 2464httpSetField(http_t *http, /* I - Connection to server */
ef416fc2 2465 http_field_t field, /* I - Field index */
2466 const char *value) /* I - Value */
2467{
2468 if (http == NULL ||
2469 field < HTTP_FIELD_ACCEPT_LANGUAGE ||
2470 field > HTTP_FIELD_WWW_AUTHENTICATE ||
2471 value == NULL)
2472 return;
2473
2474 strlcpy(http->fields[field], value, HTTP_MAX_VALUE);
f7deaa1a 2475
f7deaa1a 2476 if (field == HTTP_FIELD_AUTHORIZATION)
2477 {
e07d4801
MS		 2478 /*
2479 * Special case for Authorization: as its contents can be
2480 * longer than HTTP_MAX_VALUE
2481 */
2482
f7deaa1a 2483 if (http->field_authorization)
2484 free(http->field_authorization);
2485
2486 http->field_authorization = strdup(value);
2487 }
e07d4801
MS		 2488 else if (field == HTTP_FIELD_HOST)
2489 {
2490 /*
f11a948a
MS		 2491 * Special-case for Host: as we don't want a trailing "." on the hostname and
2492 * need to bracket IPv6 numeric addresses.
e07d4801
MS		 2493 */
2494
178cb736
MS		 2495 char *ptr = strchr(value, ':');
2496
2497 if (value[0] != '[' && ptr && strchr(ptr + 1, ':'))
f11a948a
MS		 2498 {
2499 /*
2500 * Bracket IPv6 numeric addresses...
2501 *
2502 * This is slightly inefficient (basically copying twice), but is an edge
2503 * case and not worth optimizing...
2504 */
e07d4801 2505
f11a948a
MS		 2506 snprintf(http->fields[HTTP_FIELD_HOST],
2507 sizeof(http->fields[HTTP_FIELD_HOST]), "[%s]", value);
2508 }
2509 else
e07d4801 2510 {
f11a948a
MS		 2511 /*
2512 * Check for a trailing dot on the hostname...
2513 */
2514
178cb736 2515 ptr = http->fields[HTTP_FIELD_HOST];
f11a948a
MS		 2516
2517 if (*ptr)
2518 {
2519 ptr += strlen(ptr) - 1;
e07d4801 2520
f11a948a
MS		 2521 if (*ptr == '.')
2522 *ptr = '\0';
2523 }
e07d4801
MS		 2524 }
2525 }
ef416fc2 2526}
2527
2528
2529/*
2530 * 'httpSetLength()' - Set the content-length and content-encoding.
2531 *
426c6a59 2532 * @since CUPS 1.2/Mac OS X 10.5@
ef416fc2 2533 */
2534
2535void
568fa3fa 2536httpSetLength(http_t *http, /* I - Connection to server */
ef416fc2 2537 size_t length) /* I - Length (0 for chunked) */
2538{
2539 if (!http)
2540 return;
2541
2542 if (!length)
2543 {
2544 strcpy(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked");
2545 http->fields[HTTP_FIELD_CONTENT_LENGTH][0] = '\0';
2546 }
2547 else
2548 {
2549 http->fields[HTTP_FIELD_TRANSFER_ENCODING][0] = '\0';
2550 snprintf(http->fields[HTTP_FIELD_CONTENT_LENGTH], HTTP_MAX_VALUE,
2551 CUPS_LLFMT, CUPS_LLCAST length);
2552 }
2553}
2554
2555
10d09e33
MS		 2556/*
2557 * '_httpSetTimeout()' - Set read/write timeouts and an optional callback.
2558 *
2559 * The optional timeout callback receives both the HTTP connection and a user
2560 * data pointer and must return 1 to continue or 0 to error out.
2561 */
2562
2563void
2564_httpSetTimeout(
2565 http_t *http, /* I - Connection to server */
2566 double timeout, /* I - Number of seconds for timeout,
2567 must be greater than 0 */
2568 _http_timeout_cb_t cb, /* I - Callback function or NULL */
2569 void *user_data) /* I - User data pointer */
2570{
2571 if (!http || timeout <= 0.0)
2572 return;
2573
2574 http->timeout_cb = cb;
2575 http->timeout_data = user_data;
2576 http->timeout_value.tv_sec = (int)timeout;
2577 http->timeout_value.tv_usec = (int)(timeout * 1000000) % 1000000;
2578
2579 if (http->fd >= 0)
2580 {
c8fef167
MS		 2581#ifdef WIN32
2582 DWORD timeout_value = http->timeout_value.tv_sec * 1000 +
2583 http->timeout_value.tv_usec / 1000;
2584 /* Timeout in milliseconds */
2585
2586 setsockopt(http->fd, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout_value,
2587 sizeof(timeout_value));
2588 setsockopt(http->fd, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout_value,
2589 sizeof(timeout_value));
2590#else
10d09e33
MS		 2591 setsockopt(http->fd, SOL_SOCKET, SO_RCVTIMEO, &(http->timeout_value),
2592 sizeof(http->timeout_value));
2593 setsockopt(http->fd, SOL_SOCKET, SO_SNDTIMEO, &(http->timeout_value),
2594 sizeof(http->timeout_value));
c8fef167 2595#endif /* WIN32 */
10d09e33
MS		 2596 }
2597}
2598
2599
ef416fc2 2600/*
2601 * 'httpTrace()' - Send an TRACE request to the server.
2602 */
2603
2604int /* O - Status of call (0 = success) */
568fa3fa 2605httpTrace(http_t *http, /* I - Connection to server */
ef416fc2 2606 const char *uri) /* I - URI for trace */
2607{
2608 return (http_send(http, HTTP_TRACE, uri));
2609}
2610
2611
2612/*
e60ec91f
MS		 2613 * '_httpUpdate()' - Update the current HTTP status for incoming data.
2614 *
2615 * Note: Unlike httpUpdate(), this function does not flush pending write data
2616 * and only retrieves a single status line from the HTTP connection.
ef416fc2 2617 */
2618
e60ec91f
MS		 2619int /* O - 1 to continue, 0 to stop */
2620_httpUpdate(http_t *http, /* I - Connection to server */
2621 http_status_t *status) /* O - Current HTTP status */
ef416fc2 2622{
2623 char line[32768], /* Line from connection... */
2624 *value; /* Pointer to value on line */
2625 http_field_t field; /* Field index */
e60ec91f 2626 int major, minor; /* HTTP version numbers */
ef416fc2 2627
2628
e60ec91f 2629 DEBUG_printf(("_httpUpdate(http=%p, status=%p), state=%s", http, status,
f11a948a 2630 http_states[http->state]));
ef416fc2 2631
2632 /*
e60ec91f 2633 * Grab a single line from the connection...
ef416fc2 2634 */
2635
e60ec91f 2636 if (!httpGets(line, sizeof(line), http))
ef416fc2 2637 {
e60ec91f
MS		 2638 *status = HTTP_ERROR;
2639 return (0);
ef416fc2 2640 }
2641
e60ec91f 2642 DEBUG_printf(("2_httpUpdate: Got \"%s\"", line));
ef416fc2 2643
e60ec91f 2644 if (line[0] == '\0')
ef416fc2 2645 {
e60ec91f
MS		 2646 /*
2647 * Blank line means the start of the data section (if any). Return
2648 * the result code, too...
2649 *
2650 * If we get status 100 (HTTP_CONTINUE), then we *don't* change states.
2651 * Instead, we just return HTTP_CONTINUE to the caller and keep on
2652 * tryin'...
2653 */
ef416fc2 2654
e60ec91f 2655 if (http->status == HTTP_CONTINUE)
ef416fc2 2656 {
e60ec91f
MS		 2657 *status = http->status;
2658 return (0);
2659 }
ef416fc2 2660
e60ec91f
MS		 2661 if (http->status < HTTP_BAD_REQUEST)
2662 http->digest_tries = 0;
ef416fc2 2663
2664#ifdef HAVE_SSL
e60ec91f
MS		 2665 if (http->status == HTTP_SWITCHING_PROTOCOLS && !http->tls)
2666 {
2667 if (http_setup_ssl(http) != 0)
ef416fc2 2668 {
ef416fc2 2669# ifdef WIN32
e60ec91f 2670 closesocket(http->fd);
ef416fc2 2671# else
e60ec91f 2672 close(http->fd);
ef416fc2 2673# endif /* WIN32 */
2674
e60ec91f
MS		 2675 *status = http->status = HTTP_ERROR;
2676 return (0);
ef416fc2 2677 }
e60ec91f
MS		 2678
2679 *status = HTTP_CONTINUE;
2680 return (0);
2681 }
ef416fc2 2682#endif /* HAVE_SSL */
2683
e60ec91f 2684 httpGetLength2(http);
ef416fc2 2685
e60ec91f
MS		 2686 switch (http->state)
2687 {
2688 case HTTP_GET :
2689 case HTTP_POST :
2690 case HTTP_POST_RECV :
2691 case HTTP_PUT :
2692 http->state ++;
2693 case HTTP_POST_SEND :
2694 case HTTP_HEAD :
2695 break;
ef416fc2 2696
e60ec91f
MS		 2697 default :
2698 http->state = HTTP_WAITING;
2699 break;
ef416fc2 2700 }
e60ec91f
MS		 2701
2702 *status = http->status;
2703 return (0);
2704 }
2705 else if (!strncmp(line, "HTTP/", 5))
2706 {
2707 /*
2708 * Got the beginning of a response...
2709 */
2710
2711 int intstatus; /* Status value as an integer */
2712
2713 if (sscanf(line, "HTTP/%d.%d%d", &major, &minor, &intstatus) != 3)
2714 {
2715 *status = http->status = HTTP_ERROR;
2716 return (0);
2717 }
2718
2719 http->version = (http_version_t)(major * 100 + minor);
2720 *status = http->status = (http_status_t)intstatus;
2721 }
2722 else if ((value = strchr(line, ':')) != NULL)
2723 {
2724 /*
2725 * Got a value...
2726 */
2727
2728 *value++ = '\0';
2729 while (_cups_isspace(*value))
2730 value ++;
2731
2732 /*
2733 * Be tolerants of servers that send unknown attribute fields...
2734 */
2735
2736 if (!strcasecmp(line, "expect"))
ef416fc2 2737 {
2738 /*
e60ec91f 2739 * "Expect: 100-continue" or similar...
ef416fc2 2740 */
2741
e60ec91f 2742 http->expect = (http_status_t)atoi(value);
ef416fc2 2743 }
e60ec91f 2744 else if (!strcasecmp(line, "cookie"))
ef416fc2 2745 {
2746 /*
e60ec91f 2747 * "Cookie: name=value[; name=value ...]" - replaces previous cookies...
ef416fc2 2748 */
2749
e60ec91f
MS		 2750 httpSetCookie(http, value);
2751 }
2752 else if ((field = http_field(line)) != HTTP_FIELD_UNKNOWN)
2753 httpSetField(http, field, value);
2754#ifdef DEBUG
2755 else
2756 DEBUG_printf(("1_httpUpdate: unknown field %s seen!", line));
2757#endif /* DEBUG */
2758 }
2759 else
2760 {
2761 DEBUG_printf(("1_httpUpdate: Bad response line \"%s\"!", line));
2762 *status = http->status = HTTP_ERROR;
2763 return (0);
2764 }
ef416fc2 2765
e60ec91f
MS		 2766 return (1);
2767}
ef416fc2 2768
ef416fc2 2769
e60ec91f
MS		 2770/*
2771 * 'httpUpdate()' - Update the current HTTP state for incoming data.
2772 */
ef416fc2 2773
e60ec91f
MS		 2774http_status_t /* O - HTTP status */
2775httpUpdate(http_t *http) /* I - Connection to server */
2776{
2777 http_status_t status; /* Request status */
2778
2779
2780 DEBUG_printf(("httpUpdate(http=%p), state=%s", http,
2781 http_states[http->state]));
2782
2783 /*
2784 * Flush pending data, if any...
2785 */
2786
2787 if (http->wused)
2788 {
2789 DEBUG_puts("2httpUpdate: flushing buffer...");
2790
2791 if (httpFlushWrite(http) < 0)
ef416fc2 2792 return (HTTP_ERROR);
ef416fc2 2793 }
2794
e60ec91f
MS		 2795 /*
2796 * If we haven't issued any commands, then there is nothing to "update"...
2797 */
2798
2799 if (http->state == HTTP_WAITING)
2800 return (HTTP_CONTINUE);
2801
2802 /*
2803 * Grab all of the lines we can from the connection...
2804 */
2805
2806 while (_httpUpdate(http, &status));
2807
ef416fc2 2808 /*
2809 * See if there was an error...
2810 */
2811
2812 if (http->error == EPIPE && http->status > HTTP_CONTINUE)
e07d4801
MS		 2813 {
2814 DEBUG_printf(("1httpUpdate: Returning status %d...", http->status));
ef416fc2 2815 return (http->status);
e07d4801 2816 }
ef416fc2 2817
2818 if (http->error)
2819 {
e07d4801 2820 DEBUG_printf(("1httpUpdate: socket error %d - %s", http->error,
ef416fc2 2821 strerror(http->error)));
2822 http->status = HTTP_ERROR;
2823 return (HTTP_ERROR);
2824 }
2825
2826 /*
e60ec91f 2827 * Return the current status...
ef416fc2 2828 */
2829
e60ec91f 2830 return (status);
ef416fc2 2831}
2832
2833
38e73f87
MS		 2834/*
2835 * '_httpWait()' - Wait for data available on a connection (no flush).
2836 */
2837
2838int /* O - 1 if data is available, 0 otherwise */
2839_httpWait(http_t *http, /* I - Connection to server */
2840 int msec, /* I - Milliseconds to wait */
2841 int usessl) /* I - Use SSL context? */
2842{
2843#ifdef HAVE_POLL
2844 struct pollfd pfd; /* Polled file descriptor */
2845#else
2846 fd_set input_set; /* select() input set */
2847 struct timeval timeout; /* Timeout */
2848#endif /* HAVE_POLL */
2849 int nfds; /* Result from select()/poll() */
2850
2851
e07d4801 2852 DEBUG_printf(("4_httpWait(http=%p, msec=%d, usessl=%d)", http, msec, usessl));
38e73f87
MS		 2853
2854 if (http->fd < 0)
f8b3a85b
MS		 2855 {
2856 DEBUG_printf(("5_httpWait: Returning 0 since fd=%d", http->fd));
38e73f87 2857 return (0);
f8b3a85b 2858 }
38e73f87
MS		 2859
2860 /*
2861 * Check the SSL/TLS buffers for data first...
2862 */
2863
2864#ifdef HAVE_SSL
2865 if (http->tls && usessl)
2866 {
2867# ifdef HAVE_LIBSSL
7cf5915e 2868 if (SSL_pending(http->tls))
f8b3a85b
MS		 2869 {
2870 DEBUG_puts("5_httpWait: Return 1 since there is pending SSL data.");
38e73f87 2871 return (1);
f8b3a85b
MS		 2872 }
2873
38e73f87 2874# elif defined(HAVE_GNUTLS)
7cf5915e 2875 if (gnutls_record_check_pending(http->tls))
f8b3a85b
MS		 2876 {
2877 DEBUG_puts("5_httpWait: Return 1 since there is pending SSL data.");
38e73f87 2878 return (1);
f8b3a85b
MS		 2879 }
2880
38e73f87
MS		 2881# elif defined(HAVE_CDSASSL)
2882 size_t bytes; /* Bytes that are available */
2883
7cf5915e 2884 if (!SSLGetBufferedReadSize(http->tls, &bytes) &&
38e73f87 2885 bytes > 0)
f8b3a85b
MS		 2886 {
2887 DEBUG_puts("5_httpWait: Return 1 since there is pending SSL data.");
38e73f87 2888 return (1);
f8b3a85b 2889 }
38e73f87
MS		 2890# endif /* HAVE_LIBSSL */
2891 }
2892#endif /* HAVE_SSL */
2893
2894 /*
2895 * Then try doing a select() or poll() to poll the socket...
2896 */
2897
2898#ifdef HAVE_POLL
2899 pfd.fd = http->fd;
2900 pfd.events = POLLIN;
2901
e07d4801
MS		 2902 while ((nfds = poll(&pfd, 1, msec)) < 0 &&
2903 (errno == EINTR || errno == EAGAIN));
38e73f87
MS		 2904
2905#else
2906 do
2907 {
2908 FD_ZERO(&input_set);
2909 FD_SET(http->fd, &input_set);
2910
e07d4801 2911 DEBUG_printf(("6_httpWait: msec=%d, http->fd=%d", msec, http->fd));
38e73f87
MS		 2912
2913 if (msec >= 0)
2914 {
2915 timeout.tv_sec = msec / 1000;
2916 timeout.tv_usec = (msec % 1000) * 1000;
2917
2918 nfds = select(http->fd + 1, &input_set, NULL, NULL, &timeout);
2919 }
2920 else
2921 nfds = select(http->fd + 1, &input_set, NULL, NULL, NULL);
2922
e07d4801 2923 DEBUG_printf(("6_httpWait: select() returned %d...", nfds));
38e73f87
MS		 2924 }
2925# ifdef WIN32
cc754834
MS		 2926 while (nfds < 0 && (WSAGetLastError() == WSAEINTR ||
2927 WSAGetLastError() == WSAEWOULDBLOCK));
38e73f87 2928# else
e07d4801 2929 while (nfds < 0 && (errno == EINTR || errno == EAGAIN));
38e73f87
MS		 2930# endif /* WIN32 */
2931#endif /* HAVE_POLL */
2932
f8b3a85b
MS		 2933 DEBUG_printf(("5_httpWait: returning with nfds=%d, errno=%d...", nfds,
2934 errno));
38e73f87
MS		 2935
2936 return (nfds > 0);
2937}
2938
2939
ef416fc2 2940/*
2941 * 'httpWait()' - Wait for data available on a connection.
2942 *
426c6a59 2943 * @since CUPS 1.1.19/Mac OS X 10.3@
ef416fc2 2944 */
2945
2946int /* O - 1 if data is available, 0 otherwise */
568fa3fa 2947httpWait(http_t *http, /* I - Connection to server */
ef416fc2 2948 int msec) /* I - Milliseconds to wait */
2949{
2950 /*
2951 * First see if there is data in the buffer...
2952 */
2953
2954 if (http == NULL)
2955 return (0);
2956
2957 if (http->used)
2958 return (1);
2959
8ca02f3c 2960 /*
2961 * Flush pending data, if any...
2962 */
2963
2964 if (http->wused)
2965 {
2966 if (httpFlushWrite(http) < 0)
2967 return (0);
2968 }
2969
ef416fc2 2970 /*
2971 * If not, check the SSL/TLS buffers and do a select() on the connection...
2972 */
2973
38e73f87 2974 return (_httpWait(http, msec, 1));
ef416fc2 2975}
2976
2977
2978/*
2979 * 'httpWrite()' - Write data to a HTTP connection.
a4d04587 2980 *
2981 * This function is deprecated. Use the httpWrite2() function which can
2982 * write more than 2GB of data.
2983 *
2984 * @deprecated@
ef416fc2 2985 */
ef55b745 2986
ef416fc2 2987int /* O - Number of bytes written */
568fa3fa 2988httpWrite(http_t *http, /* I - Connection to server */
ef416fc2 2989 const char *buffer, /* I - Buffer for data */
2990 int length) /* I - Number of bytes to write */
2991{
a4d04587 2992 return ((int)httpWrite2(http, buffer, length));
2993}
2994
2995
2996/*
2997 * 'httpWrite2()' - Write data to a HTTP connection.
ecdc0628 2998 *
426c6a59 2999 * @since CUPS 1.2/Mac OS X 10.5@
a4d04587 3000 */
ef55b745 3001
a4d04587 3002ssize_t /* O - Number of bytes written */
568fa3fa 3003httpWrite2(http_t *http, /* I - Connection to server */
a4d04587 3004 const char *buffer, /* I - Buffer for data */
3005 size_t length) /* I - Number of bytes to write */
3006{
3007 ssize_t bytes; /* Bytes written */
ef416fc2 3008
3009
e07d4801 3010 DEBUG_printf(("httpWrite2(http=%p, buffer=%p, length=" CUPS_LLFMT ")", http,
a603edef 3011 buffer, CUPS_LLCAST length));
ef416fc2 3012
3013 /*
3014 * Range check input...
3015 */
3016
3017 if (http == NULL || buffer == NULL)
3018 return (-1);
3019
3020 /*
3021 * Mark activity on the connection...
3022 */
3023
3024 http->activity = time(NULL);
3025
3026 /*
3027 * Buffer small writes for better performance...
3028 */
3029
3030 if (length > 0)
3031 {
3032 if (http->wused && (length + http->wused) > sizeof(http->wbuffer))
3033 {
e07d4801
MS		 3034 DEBUG_printf(("2httpWrite2: Flushing buffer (wused=%d, length="
3035 CUPS_LLFMT ")", http->wused, CUPS_LLCAST length));
ef416fc2 3036
3037 httpFlushWrite(http);
3038 }
3039
38e73f87
MS		 3040 if ((length + http->wused) <= sizeof(http->wbuffer) &&
3041 length < sizeof(http->wbuffer))
ef416fc2 3042 {
3043 /*
3044 * Write to buffer...
3045 */
3046
e07d4801 3047 DEBUG_printf(("2httpWrite2: Copying " CUPS_LLFMT " bytes to wbuffer...",
a603edef 3048 CUPS_LLCAST length));
ef416fc2 3049
3050 memcpy(http->wbuffer + http->wused, buffer, length);
b86bc4cf 3051 http->wused += (int)length;
3052 bytes = (ssize_t)length;
ef416fc2 3053 }
3054 else
3055 {
3056 /*
3057 * Otherwise write the data directly...
3058 */
3059
e07d4801 3060 DEBUG_printf(("2httpWrite2: Writing " CUPS_LLFMT " bytes to socket...",
a603edef 3061 CUPS_LLCAST length));
ef416fc2 3062
3063 if (http->data_encoding == HTTP_ENCODE_CHUNKED)
b86bc4cf 3064 bytes = (ssize_t)http_write_chunk(http, buffer, (int)length);
ef416fc2 3065 else
b86bc4cf 3066 bytes = (ssize_t)http_write(http, buffer, (int)length);
ef416fc2 3067
e07d4801 3068 DEBUG_printf(("2httpWrite2: Wrote " CUPS_LLFMT " bytes...",
ae71f5de 3069 CUPS_LLCAST bytes));
ef416fc2 3070 }
3071
3072 if (http->data_encoding == HTTP_ENCODE_LENGTH)
3073 http->data_remaining -= bytes;
3074 }
3075 else
3076 bytes = 0;
3077
3078 /*
3079 * Handle end-of-request processing...
3080 */
3081
3082 if ((http->data_encoding == HTTP_ENCODE_CHUNKED && length == 0) ||
3083 (http->data_encoding == HTTP_ENCODE_LENGTH && http->data_remaining == 0))
3084 {
3085 /*
3086 * Finished with the transfer; unless we are sending POST or PUT
3087 * data, go idle...
3088 */
3089
e07d4801 3090 DEBUG_puts("2httpWrite: changing states...");
ef416fc2 3091
3092 if (http->wused)
3093 httpFlushWrite(http);
3094
3095 if (http->data_encoding == HTTP_ENCODE_CHUNKED)
3096 {
3097 /*
3098 * Send a 0-length chunk at the end of the request...
3099 */
3100
3101 http_write(http, "0\r\n\r\n", 5);
3102
3103 /*
3104 * Reset the data state...
3105 */
3106
3107 http->data_encoding = HTTP_ENCODE_LENGTH;
3108 http->data_remaining = 0;
3109 }
ef416fc2 3110 }
3111
3112 return (bytes);
3113}
3114
3115
3116#if defined(HAVE_SSL) && defined(HAVE_CDSASSL)
3117/*
411affcf 3118 * '_httpWriteCDSA()' - Write function for the CDSA library.
ef416fc2 3119 */
3120
3121OSStatus /* O - -1 on error, 0 on success */
3122_httpWriteCDSA(
3123 SSLConnectionRef connection, /* I - SSL/TLS connection */
3124 const void *data, /* I - Data buffer */
3125 size_t *dataLength) /* IO - Number of bytes */
3126{
411affcf 3127 OSStatus result; /* Return value */
3128 ssize_t bytes; /* Number of bytes read */
3129 http_t *http; /* HTTP connection */
e53920b9 3130
3131
411affcf 3132 http = (http_t *)connection;
ef416fc2 3133
b423cd4c 3134 do
411affcf 3135 {
3136 bytes = write(http->fd, data, *dataLength);
3137 }
e07d4801 3138 while (bytes == -1 && (errno == EINTR || errno == EAGAIN));
fa73b229 3139
b423cd4c 3140 if (bytes == *dataLength)
411affcf 3141 {
b423cd4c 3142 result = 0;
411affcf 3143 }
b423cd4c 3144 else if (bytes >= 0)
3145 {
3146 *dataLength = bytes;
3147 result = errSSLWouldBlock;
3148 }
3149 else
3150 {
3151 *dataLength = 0;
ef55b745 3152
fa73b229 3153 if (errno == EAGAIN)
b423cd4c 3154 result = errSSLWouldBlock;
b423cd4c 3155 else
ed486911 3156 result = errSSLClosedAbort;
ef416fc2 3157 }
b423cd4c 3158
411affcf 3159 return (result);
ef416fc2 3160}
3161#endif /* HAVE_SSL && HAVE_CDSASSL */
3162
3163
411affcf 3164#if defined(HAVE_SSL) && defined(HAVE_GNUTLS)
3165/*
3166 * '_httpWriteGNUTLS()' - Write function for the GNU TLS library.
3167 */
3168
3169ssize_t /* O - Number of bytes written or -1 on error */
3170_httpWriteGNUTLS(
568fa3fa 3171 gnutls_transport_ptr ptr, /* I - Connection to server */
411affcf 3172 const void *data, /* I - Data buffer */
3173 size_t length) /* I - Number of bytes to write */
3174{
3175 return (send(((http_t *)ptr)->fd, data, length, 0));
3176}
3177#endif /* HAVE_SSL && HAVE_GNUTLS */
3178
3179
3180#if defined(HAVE_SSL) && defined(HAVE_LIBSSL)
3181/*
3182 * 'http_bio_ctrl()' - Control the HTTP connection.
3183 */
3184
3185static long /* O - Result/data */
3186http_bio_ctrl(BIO *h, /* I - BIO data */
3187 int cmd, /* I - Control command */
3188 long arg1, /* I - First argument */
3189 void *arg2) /* I - Second argument */
3190{
3191 switch (cmd)
3192 {
3193 default :
3194 return (0);
3195
3196 case BIO_CTRL_RESET :
3197 h->ptr = NULL;
3198 return (0);
3199
3200 case BIO_C_SET_FILE_PTR :
3201 h->ptr = arg2;
3202 h->init = 1;
3203 return (1);
3204
3205 case BIO_C_GET_FILE_PTR :
3206 if (arg2)
3207 {
3208 *((void **)arg2) = h->ptr;
3209 return (1);
3210 }
3211 else
3212 return (0);
ef55b745 3213
411affcf 3214 case BIO_CTRL_DUP :
3215 case BIO_CTRL_FLUSH :
3216 return (1);
3217 }
3218}
3219
3220
3221/*
3222 * 'http_bio_free()' - Free OpenSSL data.
3223 */
3224
3225static int /* O - 1 on success, 0 on failure */
3226http_bio_free(BIO *h) /* I - BIO data */
3227{
3228 if (!h)
3229 return (0);
3230
3231 if (h->shutdown)
3232 {
3233 h->init = 0;
3234 h->flags = 0;
3235 }
3236
3237 return (1);
3238}
3239
3240
3241/*
3242 * 'http_bio_new()' - Initialize an OpenSSL BIO structure.
3243 */
3244
3245static int /* O - 1 on success, 0 on failure */
3246http_bio_new(BIO *h) /* I - BIO data */
3247{
3248 if (!h)
3249 return (0);
3250
3251 h->init = 0;
3252 h->num = 0;
3253 h->ptr = NULL;
3254 h->flags = 0;
3255
3256 return (1);
3257}
3258
3259
3260/*
3261 * 'http_bio_puts()' - Send a string for OpenSSL.
3262 */
3263
3264static int /* O - Bytes written */
3265http_bio_puts(BIO *h, /* I - BIO data */
3266 const char *str) /* I - String to write */
3267{
b86bc4cf 3268#ifdef WIN32
3269 return (send(((http_t *)h->ptr)->fd, str, (int)strlen(str), 0));
3270#else
411affcf 3271 return (send(((http_t *)h->ptr)->fd, str, strlen(str), 0));
b86bc4cf 3272#endif /* WIN32 */
411affcf 3273}
3274
3275
3276/*
3277 * 'http_bio_read()' - Read data for OpenSSL.
3278 */
3279
3280static int /* O - Bytes read */
3281http_bio_read(BIO *h, /* I - BIO data */
3282 char *buf, /* I - Buffer */
3283 int size) /* I - Number of bytes to read */
3284{
3285 http_t *http; /* HTTP connection */
3286
3287
3288 http = (http_t *)h->ptr;
3289
3290 if (!http->blocking)
3291 {
3292 /*
3293 * Make sure we have data before we read...
3294 */
3295
38e73f87 3296 if (!_httpWait(http, 10000, 0))
411affcf 3297 {
b86bc4cf 3298#ifdef WIN32
3299 http->error = WSAETIMEDOUT;
3300#else
411affcf 3301 http->error = ETIMEDOUT;
b86bc4cf 3302#endif /* WIN32 */
3303
411affcf 3304 return (-1);
3305 }
3306 }
3307
3308 return (recv(http->fd, buf, size, 0));
3309}
3310
3311
3312/*
3313 * 'http_bio_write()' - Write data for OpenSSL.
3314 */
3315
3316static int /* O - Bytes written */
3317http_bio_write(BIO *h, /* I - BIO data */
3318 const char *buf, /* I - Buffer to write */
3319 int num) /* I - Number of bytes to write */
3320{
3321 return (send(((http_t *)h->ptr)->fd, buf, num, 0));
3322}
3323#endif /* HAVE_SSL && HAVE_LIBSSL */
3324
3325
ae71f5de
MS		 3326#ifdef DEBUG
3327/*
3328 * 'http_debug_hex()' - Do a hex dump of a buffer.
3329 */
3330
3331static void
3332http_debug_hex(const char *prefix, /* I - Prefix for line */
3333 const char *buffer, /* I - Buffer to dump */
3334 int bytes) /* I - Bytes to dump */
3335{
3336 int i, j, /* Looping vars */
3337 ch; /* Current character */
3338 char line[255], /* Line buffer */
3339 *start, /* Start of line after prefix */
3340 *ptr; /* Pointer into line */
3341
3342
f11a948a 3343 if (_cups_debug_fd < 0 || _cups_debug_level < 6)
dd1abb6b
MS		 3344 return;
3345
e07d4801 3346 DEBUG_printf(("6%s: %d bytes:\n", prefix, bytes));
ae71f5de 3347
f11a948a 3348 snprintf(line, sizeof(line), "6%s: ", prefix);
ae71f5de
MS		 3349 start = line + strlen(line);
3350
3351 for (i = 0; i < bytes; i += 16)
3352 {
3353 for (j = 0, ptr = start; j < 16 && (i + j) < bytes; j ++, ptr += 2)
3354 sprintf(ptr, "%02X", buffer[i + j] & 255);
3355
3356 while (j < 16)
3357 {
3358 strcpy(ptr, " ");
3359 ptr += 2;
3360 j ++;
3361 }
3362
3363 strcpy(ptr, " ");
3364 ptr += 2;
3365
3366 for (j = 0; j < 16 && (i + j) < bytes; j ++)
3367 {
3368 ch = buffer[i + j] & 255;
3369
3370 if (ch < ' ' || ch >= 127)
3371 ch = '.';
3372
3373 *ptr++ = ch;
3374 }
3375
3376 *ptr = '\0';
3377 DEBUG_puts(line);
3378 }
3379}
3380#endif /* DEBUG */
3381
3382
ef416fc2 3383/*
3384 * 'http_field()' - Return the field index for a field name.
3385 */
3386
ae71f5de
MS		 3387static http_field_t /* O - Field index */
3388http_field(const char *name) /* I - String name */
ef416fc2 3389{
ae71f5de 3390 int i; /* Looping var */
ef416fc2 3391
3392
3393 for (i = 0; i < HTTP_FIELD_MAX; i ++)
3394 if (strcasecmp(name, http_fields[i]) == 0)
3395 return ((http_field_t)i);
3396
3397 return (HTTP_FIELD_UNKNOWN);
3398}
3399
3400
3401#ifdef HAVE_SSL
3402/*
3403 * 'http_read_ssl()' - Read from a SSL/TLS connection.
3404 */
3405
3406static int /* O - Bytes read */
568fa3fa 3407http_read_ssl(http_t *http, /* I - Connection to server */
ef416fc2 3408 char *buf, /* I - Buffer to store data */
3409 int len) /* I - Length of buffer */
3410{
3411# if defined(HAVE_LIBSSL)
3412 return (SSL_read((SSL *)(http->tls), buf, len));
3413
3414# elif defined(HAVE_GNUTLS)
ef55b745
MS		 3415 ssize_t result; /* Return value */
3416
3417
7cf5915e 3418 result = gnutls_record_recv(http->tls, buf, len);
ef55b745
MS		 3419
3420 if (result < 0 && !errno)
3421 {
3422 /*
3423 * Convert GNU TLS error to errno value...
3424 */
3425
3426 switch (result)
3427 {
3428 case GNUTLS_E_INTERRUPTED :
3429 errno = EINTR;
3430 break;
3431
3432 case GNUTLS_E_AGAIN :
3433 errno = EAGAIN;
3434 break;
3435
3436 default :
3437 errno = EPIPE;
3438 break;
3439 }
3440
3441 result = -1;
3442 }
3443
3444 return ((int)result);
ef416fc2 3445
3446# elif defined(HAVE_CDSASSL)
fa73b229 3447 int result; /* Return value */
ef416fc2 3448 OSStatus error; /* Error info */
3449 size_t processed; /* Number of bytes processed */
3450
3451
7cf5915e 3452 error = SSLRead(http->tls, buf, len, &processed);
ef416fc2 3453
fa73b229 3454 switch (error)
ef416fc2 3455 {
fa73b229 3456 case 0 :
3457 result = (int)processed;
3458 break;
3459 case errSSLClosedGraceful :
3460 result = 0;
3461 break;
3462 case errSSLWouldBlock :
b423cd4c 3463 if (processed)
3464 result = (int)processed;
3465 else
3466 {
3467 result = -1;
3468 errno = EINTR;
3469 }
fa73b229 3470 break;
3471 default :
3472 errno = EPIPE;
3473 result = -1;
3474 break;
ef416fc2 3475 }
fa73b229 3476
3477 return (result);
cc754834
MS		 3478# elif defined(HAVE_SSPISSL)
3479 return _sspiRead((_sspi_struct_t*) http->tls, buf, len);
ef416fc2 3480# endif /* HAVE_LIBSSL */
3481}
3482#endif /* HAVE_SSL */
3483
3484
6d2f911b
MS		 3485#ifdef HAVE_LIBSSL
3486/*
3487 * 'http_locking_cb()' - Lock/unlock a thread's mutex.
3488 */
3489
3490static void
3491http_locking_cb(int mode, /* I - Lock mode */
3492 int type, /* I - Lock type */
3493 const char *file, /* I - Source file */
3494 int line) /* I - Line number */
3495{
3496 if (mode & CRYPTO_LOCK)
3497 _cupsMutexLock(http_locks + type);
3498 else
3499 _cupsMutexUnlock(http_locks + type);
3500}
3501#endif /* HAVE_LIBSSL */
3502
3503
ef416fc2 3504/*
3505 * 'http_send()' - Send a request with all fields and the trailing blank line.
3506 */
3507
3508static int /* O - 0 on success, non-zero on error */
568fa3fa 3509http_send(http_t *http, /* I - Connection to server */
ef416fc2 3510 http_state_t request, /* I - Request code */
3511 const char *uri) /* I - URI */
3512{
3513 int i; /* Looping var */
839a51c8 3514 char buf[1024]; /* Encoded URI buffer */
ef416fc2 3515 static const char * const codes[] =
3516 { /* Request code strings */
3517 NULL,
3518 "OPTIONS",
3519 "GET",
3520 NULL,
3521 "HEAD",
3522 "POST",
3523 NULL,
3524 NULL,
3525 "PUT",
3526 NULL,
3527 "DELETE",
3528 "TRACE",
3529 "CLOSE"
3530 };
ef416fc2 3531
3532
e07d4801 3533 DEBUG_printf(("7http_send(http=%p, request=HTTP_%s, uri=\"%s\")",
ef416fc2 3534 http, codes[request], uri));
3535
3536 if (http == NULL || uri == NULL)
3537 return (-1);
3538
3539 /*
3540 * Set the User-Agent field if it isn't already...
3541 */
3542
3543 if (!http->fields[HTTP_FIELD_USER_AGENT][0])
3544 httpSetField(http, HTTP_FIELD_USER_AGENT, CUPS_MINIMAL);
3545
3546 /*
3547 * Encode the URI as needed...
3548 */
3549
839a51c8 3550 _httpEncodeURI(buf, uri, sizeof(buf));
ef416fc2 3551
3552 /*
3553 * See if we had an error the last time around; if so, reconnect...
3554 */
3555
3556 if (http->status == HTTP_ERROR || http->status >= HTTP_BAD_REQUEST)
fa73b229 3557 if (httpReconnect(http))
3558 return (-1);
ef416fc2 3559
d09495fa 3560 /*
3561 * Flush any written data that is pending...
3562 */
3563
3564 if (http->wused)
536bc2c6
MS		 3565 {
3566 if (httpFlushWrite(http) < 0)
3567 if (httpReconnect(http))
3568 return (-1);
3569 }
d09495fa 3570
ef416fc2 3571 /*
3572 * Send the request header...
3573 */
3574
d09495fa 3575 http->state = request;
3576 http->data_encoding = HTTP_ENCODE_FIELDS;
3577
ef416fc2 3578 if (request == HTTP_POST || request == HTTP_PUT)
3579 http->state ++;
3580
3581 http->status = HTTP_CONTINUE;
3582
3583#ifdef HAVE_SSL
3584 if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls)
3585 {
3586 httpSetField(http, HTTP_FIELD_CONNECTION, "Upgrade");
3587 httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.0,SSL/2.0,SSL/3.0");
3588 }
3589#endif /* HAVE_SSL */
3590
3591 if (httpPrintf(http, "%s %s HTTP/1.1\r\n", codes[request], buf) < 1)
3592 {
3593 http->status = HTTP_ERROR;
3594 return (-1);
3595 }
3596
3597 for (i = 0; i < HTTP_FIELD_MAX; i ++)
3598 if (http->fields[i][0] != '\0')
3599 {
e07d4801 3600 DEBUG_printf(("9http_send: %s: %s", http_fields[i],
ae71f5de 3601 httpGetField(http, i)));
ef416fc2 3602
ef55b745 3603 if (httpPrintf(http, "%s: %s\r\n", http_fields[i],
f7deaa1a 3604 httpGetField(http, i)) < 1)
ef416fc2 3605 {
3606 http->status = HTTP_ERROR;
3607 return (-1);
3608 }
3609 }
3610
3611 if (http->cookie)
3612 if (httpPrintf(http, "Cookie: $Version=0; %s\r\n", http->cookie) < 1)
3613 {
3614 http->status = HTTP_ERROR;
3615 return (-1);
3616 }
3617
b423cd4c 3618 if (http->expect == HTTP_CONTINUE &&
3619 (http->state == HTTP_POST_RECV || http->state == HTTP_PUT_RECV))
3620 if (httpPrintf(http, "Expect: 100-continue\r\n") < 1)
3621 {
3622 http->status = HTTP_ERROR;
3623 return (-1);
3624 }
3625
ef416fc2 3626 if (httpPrintf(http, "\r\n") < 1)
3627 {
3628 http->status = HTTP_ERROR;
3629 return (-1);
3630 }
3631
536bc2c6
MS		 3632 if (httpFlushWrite(http) < 0)
3633 return (-1);
3634
ef416fc2 3635 httpGetLength2(http);
3636 httpClearFields(http);
3637
f7deaa1a 3638 /*
b94498cf 3639 * The Kerberos and AuthRef authentication strings can only be used once...
f7deaa1a 3640 */
3641
ef55b745
MS		 3642 if (http->field_authorization && http->authstring &&
3643 (!strncmp(http->authstring, "Negotiate", 9) ||
b94498cf 3644 !strncmp(http->authstring, "AuthRef", 7)))
f7deaa1a 3645 {
3646 http->_authstring[0] = '\0';
3647
3648 if (http->authstring != http->_authstring)
3649 free(http->authstring);
ef55b745 3650
f7deaa1a 3651 http->authstring = http->_authstring;
3652 }
3653
ef416fc2 3654 return (0);
3655}
3656
3657
3658#ifdef HAVE_SSL
82f97232 3659# if defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
7cf5915e
MS		 3660/*
3661 * 'http_set_credentials()' - Set the SSL/TLS credentials.
3662 */
3663
3664static int /* O - Status of connection */
3665http_set_credentials(http_t *http) /* I - Connection to server */
3666{
3667 _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */
7cf5915e
MS		 3668 OSStatus error = 0; /* Error code */
3669 http_tls_credentials_t credentials = NULL;
3670 /* TLS credentials */
7cf5915e
MS		 3671
3672
3673 DEBUG_printf(("7http_set_credentials(%p)", http));
3674
7cf5915e
MS		 3675 /*
3676 * Prefer connection specific credentials...
3677 */
3678
3679 if ((credentials = http->tls_credentials) == NULL)
3680 credentials = cg->tls_credentials;
3681
3682# if HAVE_SECPOLICYCREATESSL
3683 /*
3684 * Otherwise root around in the user's keychain to see if one can be found...
3685 */
3686
3687 if (!credentials)
3688 {
3689 CFDictionaryRef query; /* Query dictionary */
3690 CFTypeRef matches = NULL; /* Matching credentials */
3691 CFArrayRef dn_array = NULL;/* Distinguished names array */
3692 CFTypeRef keys[] = { kSecClass,
3693 kSecMatchLimit,
3694 kSecReturnRef };
3695 /* Keys for dictionary */
3696 CFTypeRef values[] = { kSecClassCertificate,
3697 kSecMatchLimitOne,
3698 kCFBooleanTrue };
3699 /* Values for dictionary */
3700
3701 /*
3702 * Get the names associated with the server.
3703 */
3704
3705 if ((error = SSLCopyDistinguishedNames(http->tls, &dn_array)) != noErr)
3706 {
3707 DEBUG_printf(("4http_set_credentials: SSLCopyDistinguishedNames, error=%d",
3708 (int)error));
3709 return (error);
3710 }
3711
3712 /*
3713 * Create a query which will return all identities that can sign and match
3714 * the passed in policy.
3715 */
3716
3717 query = CFDictionaryCreate(NULL,
3718 (const void**)(&keys[0]),
3719 (const void**)(&values[0]),
3720 sizeof(keys) / sizeof(keys[0]),
3721 &kCFTypeDictionaryKeyCallBacks,
3722 &kCFTypeDictionaryValueCallBacks);
3723 if (query)
3724 {
3725 error = SecItemCopyMatching(query, &matches);
3726 DEBUG_printf(("4http_set_credentials: SecItemCopyMatching, error=%d",
3727 (int)error));
3728 CFRelease(query);
3729 }
3730
3731 if (matches)
3732 CFRelease(matches);
3733
3734 if (dn_array)
3735 CFRelease(dn_array);
3736 }
3737# endif /* HAVE_SECPOLICYCREATESSL */
3738
3739 if (credentials)
3740 {
3741 error = SSLSetCertificate(http->tls, credentials);
3742 DEBUG_printf(("4http_set_credentials: SSLSetCertificate, error=%d",
3743 (int)error));
3744 }
3745 else
3746 DEBUG_puts("4http_set_credentials: No credentials to set.");
3747
3748 return (error);
7cf5915e 3749}
82f97232 3750# endif /* HAVE_CDSASSL && HAVE_SECCERTIFICATECOPYDATA */
7cf5915e
MS		 3751
3752
ef416fc2 3753/*
3754 * 'http_setup_ssl()' - Set up SSL/TLS support on a connection.
3755 */
3756
3757static int /* O - Status of connection */
568fa3fa 3758http_setup_ssl(http_t *http) /* I - Connection to server */
ef416fc2 3759{
7cf5915e
MS		 3760 _cups_globals_t *cg = _cupsGlobals();
3761 /* Pointer to library globals */
3762 int any_root; /* Allow any root */
3763
ef416fc2 3764# ifdef HAVE_LIBSSL
89d46774 3765 SSL_CTX *context; /* Context for encryption */
411affcf 3766 BIO *bio; /* BIO data */
ef416fc2 3767# elif defined(HAVE_GNUTLS)
ef416fc2 3768 gnutls_certificate_client_credentials *credentials;
89d46774 3769 /* TLS credentials */
ef416fc2 3770# elif defined(HAVE_CDSASSL)
89d46774 3771 OSStatus error; /* Error code */
7cf5915e 3772 const char *message = NULL; /* Error message */
7cf5915e 3773 char *hostname; /* Hostname */
82f97232
MS		 3774# ifdef HAVE_SECCERTIFICATECOPYDATA
3775 cups_array_t *credentials; /* Credentials array */
7cf5915e
MS		 3776 cups_array_t *names; /* CUPS distinguished names */
3777 CFArrayRef dn_array; /* CF distinguished names array */
3778 CFIndex count; /* Number of credentials */
3779 CFDataRef data; /* Certificate data */
3780 int i; /* Looping var */
3781 http_credential_t
3782 *credential; /* Credential data */
82f97232 3783# endif /* HAVE_SECCERTIFICATECOPYDATA */
cc754834
MS		 3784# elif defined(HAVE_SSPISSL)
3785 TCHAR username[256]; /* Username returned from GetUserName() */
3786 TCHAR commonName[256]; /* Common name for certificate */
3787 DWORD dwSize; /* 32 bit size */
ef416fc2 3788# endif /* HAVE_LIBSSL */
3789
3790
e07d4801 3791 DEBUG_printf(("7http_setup_ssl(http=%p)", http));
ef416fc2 3792
7cf5915e
MS		 3793 /*
3794 * Always allow self-signed certificates for the local loopback address...
3795 */
3796
3797 if (httpAddrLocalhost(http->hostaddr))
3798 any_root = 1;
3799 else
3800 any_root = cg->any_root;
3801
ef416fc2 3802# ifdef HAVE_LIBSSL
3803 context = SSL_CTX_new(SSLv23_client_method());
3804
3805 SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
3806
411affcf 3807 bio = BIO_new(_httpBIOMethods());
3808 BIO_ctrl(bio, BIO_C_SET_FILE_PTR, 0, (char *)http);
3809
7cf5915e
MS		 3810 http->tls = SSL_new(context);
3811 SSL_set_bio(http->tls_credentials, bio, bio);
ef416fc2 3812
7cf5915e 3813 if (SSL_connect(http->tls) != 1)
ef416fc2 3814 {
3815# ifdef DEBUG
3816 unsigned long error; /* Error code */
3817
3818 while ((error = ERR_get_error()) != 0)
e07d4801 3819 DEBUG_printf(("8http_setup_ssl: %s", ERR_error_string(error, NULL)));
ef416fc2 3820# endif /* DEBUG */
3821
3822 SSL_CTX_free(context);
7cf5915e
MS		 3823 SSL_free(http->tls);
3824 http->tls = NULL;
ef416fc2 3825
3826# ifdef WIN32
3827 http->error = WSAGetLastError();
3828# else
3829 http->error = errno;
3830# endif /* WIN32 */
3831 http->status = HTTP_ERROR;
3832
3833 return (HTTP_ERROR);
3834 }
3835
3836# elif defined(HAVE_GNUTLS)
ef416fc2 3837 credentials = (gnutls_certificate_client_credentials *)
3838 malloc(sizeof(gnutls_certificate_client_credentials));
3839 if (credentials == NULL)
3840 {
ef416fc2 3841 http->error = errno;
3842 http->status = HTTP_ERROR;
3843
3844 return (-1);
3845 }
3846
3847 gnutls_certificate_allocate_credentials(credentials);
3848
7cf5915e
MS		 3849 gnutls_init(&http->tls, GNUTLS_CLIENT);
3850 gnutls_set_default_priority(http->tls);
3851 gnutls_credentials_set(http->tls, GNUTLS_CRD_CERTIFICATE, *credentials);
3852 gnutls_transport_set_ptr(http->tls, (gnutls_transport_ptr)http);
3853 gnutls_transport_set_pull_function(http->tls, _httpReadGNUTLS);
3854 gnutls_transport_set_push_function(http->tls, _httpWriteGNUTLS);
ef416fc2 3855
7cf5915e 3856 if ((gnutls_handshake(http->tls)) != GNUTLS_E_SUCCESS)
ef416fc2 3857 {
3858 http->error = errno;
3859 http->status = HTTP_ERROR;
3860
7cf5915e 3861 gnutls_deinit(http->tls);
85b5d1df
MS		 3862 gnutls_certificate_free_credentials(*credentials);
3863 free(credentials);
7cf5915e 3864 http->tls = NULL;
85b5d1df 3865
ef416fc2 3866 return (-1);
3867 }
3868
7cf5915e 3869 http->tls_credentials = credentials;
ef416fc2 3870
3871# elif defined(HAVE_CDSASSL)
7cf5915e 3872 if ((error = SSLNewContext(false, &http->tls)))
e53920b9 3873 {
89d46774 3874 http->error = error;
3875 http->status = HTTP_ERROR;
e53920b9 3876
89d46774 3877 return (-1);
e53920b9 3878 }
ef416fc2 3879
7cf5915e
MS		 3880 error = SSLSetConnection(http->tls, http);
3881 DEBUG_printf(("4http_setup_ssl: SSLSetConnection, error=%d", (int)error));
3882
3883 if (!error)
3884 {
3885 error = SSLSetIOFuncs(http->tls, _httpReadCDSA, _httpWriteCDSA);
3886 DEBUG_printf(("4http_setup_ssl: SSLSetIOFuncs, error=%d", (int)error));
3887 }
3888
3889 if (!error)
3890 {
3891 error = SSLSetProtocolVersionEnabled(http->tls, kSSLProtocol2, false);
3892 DEBUG_printf(("4http_setup_ssl: SSLSetProtocolVersionEnabled, error=%d",
3893 (int)error));
3894 }
89d46774 3895
7cf5915e
MS		 3896 if (!error)
3897 {
3898 error = SSLSetAllowsAnyRoot(http->tls, any_root);
3899 DEBUG_printf(("4http_setup_ssl: SSLSetAllowsAnyRoot(%d), error=%d",
3900 any_root, (int)error));
3901 }
89d46774 3902
3903 if (!error)
7cf5915e
MS		 3904 {
3905 error = SSLSetAllowsExpiredCerts(http->tls, cg->expired_certs);
3906 DEBUG_printf(("4http_setup_ssl: SSLSetAllowsExpiredCerts(%d), error=%d",
3907 cg->expired_certs, (int)error));
3908 }
89d46774 3909
ef416fc2 3910 if (!error)
7cf5915e
MS		 3911 {
3912 error = SSLSetAllowsExpiredRoots(http->tls, cg->expired_root);
3913 DEBUG_printf(("4http_setup_ssl: SSLSetAllowsExpiredRoots(%d), error=%d",
3914 cg->expired_root, (int)error));
3915 }
ef416fc2 3916
82f97232 3917# ifdef HAVE_SECCERTIFICATECOPYDATA
ef416fc2 3918 if (!error)
7cf5915e
MS		 3919 {
3920 if (cg->client_cert_cb)
3921 {
3922 error = SSLSetSessionOption(http->tls,
3923 kSSLSessionOptionBreakOnCertRequested, true);
3924 DEBUG_printf(("4http_setup_ssl: kSSLSessionOptionBreakOnCertRequested, "
3925 "error=%d", (int)error));
3926 }
3927 else
3928 {
3929 error = http_set_credentials(http);
3930 DEBUG_printf(("4http_setup_ssl: http_set_credentials, error=%d",
3931 (int)error));
3932 }
3933 }
3934
3935 /*
3936 * If there's a server certificate callback installed let it evaluate the
3937 * certificate(s) during the handshake...
3938 */
3939
3940 if (!error && cg->server_cert_cb != NULL)
3941 {
3942 error = SSLSetEnableCertVerify(http->tls, false);
3943 DEBUG_printf(("4http_setup_ssl: SSLSetEnableCertVerify, error=%d",
3944 (int)error));
3945
3946 if (!error)
3947 {
3948 error = SSLSetSessionOption(http->tls,
3949 kSSLSessionOptionBreakOnServerAuth, true);
3950 DEBUG_printf(("4http_setup_ssl: kSSLSessionOptionBreakOnServerAuth, "
3951 "error=%d", (int)error));
3952 }
3953 }
82f97232 3954# endif /* HAVE_SECCERTIFICATECOPYDATA */
ef416fc2 3955
ed486911 3956 if (!error)
7cf5915e
MS		 3957 {
3958 hostname = httpAddrLocalhost(http->hostaddr) ? "localhost" : http->hostname;
3959 error = SSLSetPeerDomainName(http->tls, hostname, strlen(hostname));
3960
3961 DEBUG_printf(("4http_setup_ssl: SSLSetPeerDomainName, error=%d",
3962 (int)error));
3963 }
ed486911 3964
ef416fc2 3965 if (!error)
b423cd4c 3966 {
7cf5915e
MS		 3967 int done = 0; /* Are we done yet? */
3968
3969 while (!error && !done)
3970 {
3971 error = SSLHandshake(http->tls);
3972
3973 DEBUG_printf(("4_httpWait: SSLHandshake returned %d.", (int)error));
3974
3975 switch (error)
3976 {
3977 case noErr :
3978 done = 1;
3979 break;
3980
3981 case errSSLWouldBlock :
3982 usleep(1000);
3983 break;
3984
82f97232 3985# ifdef HAVE_SECCERTIFICATECOPYDATA
7cf5915e
MS		 3986 case errSSLServerAuthCompleted :
3987 error = 0;
3988 if (cg->server_cert_cb)
3989 {
3990 error = httpCopyCredentials(http, &credentials);
3991 if (!error)
3992 {
3993 error = (cg->server_cert_cb)(http, http->tls, credentials,
3994 cg->server_cert_data);
3995 httpFreeCredentials(credentials);
3996 }
3997
3998 DEBUG_printf(("4_httpWait: Server certificate callback returned "
3999 "%d.", (int)error));
4000 }
4001 break;
4002
4003 case errSSLClientCertRequested :
4004 error = 0;
4005
4006 if (cg->client_cert_cb)
4007 {
4008 names = NULL;
82f97232 4009 if (!(error = SSLCopyDistinguishedNames(http->tls, &dn_array)) &&
7cf5915e
MS		 4010 dn_array)
4011 {
4012 if ((names = cupsArrayNew(NULL, NULL)) != NULL)
4013 {
4014 for (i = 0, count = CFArrayGetCount(dn_array); i < count; i++)
4015 {
4016 data = (CFDataRef)CFArrayGetValueAtIndex(dn_array, i);
4017
4018 if ((credential = malloc(sizeof(*credential))))
4019 {
4020 credential->datalen = CFDataGetLength(data);
4021 if ((credential->data = malloc(credential->datalen)))
4022 {
82f97232 4023 memcpy((void *)credential->data, CFDataGetBytePtr(data),
7cf5915e
MS		 4024 credential->datalen);
4025 cupsArrayAdd(names, credential);
4026 }
4027 }
4028 }
4029 }
4030
4031 CFRelease(dn_array);
4032 }
4033
4034 if (!error)
4035 {
82f97232 4036 error = (cg->client_cert_cb)(http, http->tls, names,
7cf5915e
MS		 4037 cg->client_cert_data);
4038
4039 DEBUG_printf(("4_httpWait: Client certificate callback "
4040 "returned %d.", (int)error));
4041 }
4042
4043 httpFreeCredentials(names);
4044 }
4045 break;
82f97232 4046# endif /* HAVE_SECCERTIFICATECOPYDATA */
7cf5915e
MS		 4047
4048 case errSSLUnknownRootCert :
4049 message = _("Unable to establish a secure connection to host "
4050 "(untrusted certificate).");
4051 break;
4052
4053 case errSSLNoRootCert :
4054 message = _("Unable to establish a secure connection to host "
4055 "(self-signed certificate).");
4056 break;
4057
4058 case errSSLCertExpired :
4059 message = _("Unable to establish a secure connection to host "
4060 "(expired certificate).");
4061 break;
4062
4063 case errSSLCertNotYetValid :
4064 message = _("Unable to establish a secure connection to host "
4065 "(certificate not yet valid).");
4066 break;
4067
4068 case errSSLHostNameMismatch :
4069 message = _("Unable to establish a secure connection to host "
4070 "(host name mismatch).");
4071 break;
4072
4073 case errSSLXCertChainInvalid :
4074 message = _("Unable to establish a secure connection to host "
4075 "(certificate chain invalid).");
4076 break;
4077
4078 case errSSLConnectionRefused :
4079 message = _("Unable to establish a secure connection to host "
4080 "(peer dropped connection before responding).");
4081 break;
4082
4083 default :
4084 break;
4085 }
4086 }
b423cd4c 4087 }
ef416fc2 4088
89d46774 4089 if (error)
ef416fc2 4090 {
4091 http->error = error;
4092 http->status = HTTP_ERROR;
7cf5915e
MS		 4093 errno = ECONNREFUSED;
4094
4095 SSLDisposeContext(http->tls);
4096 http->tls = NULL;
ef416fc2 4097
7cf5915e
MS		 4098 /*
4099 * If an error string wasn't set by the callbacks use a generic one...
4100 */
4101
4102 if (!message)
4103#ifdef HAVE_CSSMERRORSTRING
4104 message = cssmErrorString(error);
4105#else
4106 message = _("Unable to establish a secure connection to host.");
4107#endif /* HAVE_CSSMERRORSTRING */
ef416fc2 4108
7cf5915e 4109 _cupsSetError(IPP_PKI_ERROR, message, 1);
ef416fc2 4110
cc754834
MS		 4111 return (-1);
4112 }
7cf5915e 4113
cc754834 4114# elif defined(HAVE_SSPISSL)
7cf5915e 4115 http->tls = _sspiAlloc();
cc754834 4116
7cf5915e 4117 if (!http->tls)
cc754834
MS		 4118 return (-1);
4119
7cf5915e
MS		 4120 http->tls->sock = http->fd;
4121 dwSize = sizeof(username) / sizeof(TCHAR);
cc754834
MS		 4122 GetUserName(username, &dwSize);
4123 _sntprintf_s(commonName, sizeof(commonName) / sizeof(TCHAR),
4124 sizeof(commonName) / sizeof(TCHAR), TEXT("CN=%s"), username);
4125
7cf5915e
MS		 4126 if (!_sspiGetCredentials(http->tls_credentials, L"ClientContainer",
4127 commonName, FALSE))
cc754834 4128 {
7cf5915e
MS		 4129 _sspiFree(http->tls_credentials);
4130 http->tls_credentials = NULL;
cc754834
MS		 4131 return (-1);
4132 }
4133
7cf5915e
MS		 4134 _sspiSetAllowsAnyRoot(http->tls_credentials, TRUE);
4135 _sspiSetAllowsExpiredCerts(http->tls_credentials, TRUE);
cc754834 4136
7cf5915e 4137 if (!_sspiConnect(http->tls_credentials, http->hostname))
cc754834 4138 {
7cf5915e
MS		 4139 _sspiFree(http->tls_credentials);
4140 http->tls_credentials = NULL;
ef416fc2 4141 return (-1);
4142 }
4143# endif /* HAVE_CDSASSL */
4144
ef416fc2 4145 return (0);
4146}
4147#endif /* HAVE_SSL */
4148
4149
4150#ifdef HAVE_SSL
4151/*
4152 * 'http_shutdown_ssl()' - Shut down SSL/TLS on a connection.
4153 */
4154
4155static void
568fa3fa 4156http_shutdown_ssl(http_t *http) /* I - Connection to server */
ef416fc2 4157{
4158# ifdef HAVE_LIBSSL
89d46774 4159 SSL_CTX *context; /* Context for encryption */
ef416fc2 4160
7cf5915e 4161 context = SSL_get_SSL_CTX(http->tls_credentials);
ef416fc2 4162
7cf5915e 4163 SSL_shutdown(http->tls_credentials);
ef416fc2 4164 SSL_CTX_free(context);
7cf5915e 4165 SSL_free(http->tls_credentials);
ef416fc2 4166
4167# elif defined(HAVE_GNUTLS)
ef416fc2 4168 gnutls_certificate_client_credentials *credentials;
89d46774 4169 /* TLS credentials */
ef416fc2 4170
7cf5915e 4171 credentials = (gnutls_certificate_client_credentials *)(http->tls_credentials);
ef416fc2 4172
7cf5915e
MS		 4173 gnutls_bye(http->tls, GNUTLS_SHUT_RDWR);
4174 gnutls_deinit(http->tls);
ef416fc2 4175 gnutls_certificate_free_credentials(*credentials);
4176 free(credentials);
ef416fc2 4177
4178# elif defined(HAVE_CDSASSL)
7cf5915e 4179 while (SSLClose(http->tls) == errSSLWouldBlock)
b423cd4c 4180 usleep(1000);
4181
7cf5915e 4182 SSLDisposeContext(http->tls);
89d46774 4183
7cf5915e
MS		 4184 if (http->tls_credentials)
4185 CFRelease(http->tls_credentials);
89d46774 4186
cc754834 4187# elif defined(HAVE_SSPISSL)
7cf5915e 4188 _sspiFree(http->tls_credentials);
ef416fc2 4189# endif /* HAVE_LIBSSL */
4190
7cf5915e
MS		 4191 http->tls = NULL;
4192 http->tls_credentials = NULL;
ef416fc2 4193}
4194#endif /* HAVE_SSL */
4195
4196
6d2f911b
MS		 4197#ifdef HAVE_LIBSSL
4198/*
4199 * 'http_threadid_cb()' - Return the current thread ID.
4200 */
4201
4202static unsigned long /* O - Thread ID */
4203http_threadid_cb(void)
4204{
4205# ifdef HAVE_PTHREAD_H
4206 return ((unsigned long)pthread_self());
4207# else
4208 return (0);
4209# endif /* HAVE_PTHREAD_H */
4210}
4211#endif /* HAVE_LIBSSL */
4212
4213
ef416fc2 4214#ifdef HAVE_SSL
4215/*
4216 * 'http_upgrade()' - Force upgrade to TLS encryption.
4217 */
4218
89d46774 4219static int /* O - Status of connection */
568fa3fa 4220http_upgrade(http_t *http) /* I - Connection to server */
ef416fc2 4221{
89d46774 4222 int ret; /* Return value */
4223 http_t myhttp; /* Local copy of HTTP data */
ef416fc2 4224
4225
e07d4801 4226 DEBUG_printf(("7http_upgrade(%p)", http));
ef416fc2 4227
85b5d1df
MS		 4228 /*
4229 * Flush the connection to make sure any previous "Upgrade" message
4230 * has been read.
4231 */
4232
4233 httpFlush(http);
4234
ef416fc2 4235 /*
4236 * Copy the HTTP data to a local variable so we can do the OPTIONS
4237 * request without interfering with the existing request data...
4238 */
4239
4240 memcpy(&myhttp, http, sizeof(myhttp));
4241
4242 /*
4243 * Send an OPTIONS request to the server, requiring SSL or TLS
4244 * encryption on the link...
4245 */
4246
f7deaa1a 4247 http->field_authorization = NULL; /* Don't free the auth string */
4248
b86bc4cf 4249 httpClearFields(http);
4250 httpSetField(http, HTTP_FIELD_CONNECTION, "upgrade");
7cf5915e 4251 httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.2, TLS/1.1, TLS/1.0, SSL/3.0");
ef416fc2 4252
b86bc4cf 4253 if ((ret = httpOptions(http, "*")) == 0)
ef416fc2 4254 {
4255 /*
4256 * Wait for the secure connection...
4257 */
4258
b86bc4cf 4259 while (httpUpdate(http) == HTTP_CONTINUE);
ef416fc2 4260 }
4261
ef416fc2 4262 /*
b86bc4cf 4263 * Restore the HTTP request data...
ef416fc2 4264 */
4265
b86bc4cf 4266 memcpy(http->fields, myhttp.fields, sizeof(http->fields));
f7deaa1a 4267 http->data_encoding = myhttp.data_encoding;
4268 http->data_remaining = myhttp.data_remaining;
4269 http->_data_remaining = myhttp._data_remaining;
4270 http->expect = myhttp.expect;
4271 http->field_authorization = myhttp.field_authorization;
bc44d920 4272 http->digest_tries = myhttp.digest_tries;
ef416fc2 4273
4274 /*
4275 * See if we actually went secure...
4276 */
4277
4278 if (!http->tls)
4279 {
4280 /*
4281 * Server does not support HTTP upgrade...
4282 */
4283
e07d4801 4284 DEBUG_puts("8http_upgrade: Server does not support HTTP upgrade!");
ef416fc2 4285
4286# ifdef WIN32
4287 closesocket(http->fd);
4288# else
4289 close(http->fd);
4290# endif
4291
4292 http->fd = -1;
4293
4294 return (-1);
4295 }
4296 else
4297 return (ret);
4298}
4299#endif /* HAVE_SSL */
4300
4301
ef416fc2 4302/*
4303 * 'http_write()' - Write a buffer to a HTTP connection.
4304 */
ef55b745 4305
ef416fc2 4306static int /* O - Number of bytes written */
568fa3fa 4307http_write(http_t *http, /* I - Connection to server */
f11a948a
MS		 4308 const char *buffer, /* I - Buffer for data */
4309 int length) /* I - Number of bytes to write */
ef416fc2 4310{
4311 int tbytes, /* Total bytes sent */
4312 bytes; /* Bytes sent */
4313
4314
f8b3a85b
MS		 4315 DEBUG_printf(("2http_write(http=%p, buffer=%p, length=%d)", http, buffer,
4316 length));
f11a948a
MS		 4317 http->error = 0;
4318 tbytes = 0;
ef416fc2 4319
4320 while (length > 0)
4321 {
4322#ifdef HAVE_SSL
4323 if (http->tls)
4324 bytes = http_write_ssl(http, buffer, length);
4325 else
4326#endif /* HAVE_SSL */
4327 bytes = send(http->fd, buffer, length, 0);
4328
4329 if (bytes < 0)
4330 {
4331#ifdef WIN32
10d09e33 4332 if (WSAGetLastError() == WSAEINTR)
cc754834 4333 continue;
10d09e33
MS		 4334 else if (WSAGetLastError() == WSAEWOULDBLOCK)
4335 {
4336 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
4337 continue;
4338
4339 http->error = WSAGetLastError();
4340 }
4341 else if (WSAGetLastError() != http->error &&
4342 WSAGetLastError() != WSAECONNRESET)
ef416fc2 4343 {
4344 http->error = WSAGetLastError();
4345 continue;
4346 }
10d09e33 4347
ef416fc2 4348#else
10d09e33 4349 if (errno == EINTR)
ef416fc2 4350 continue;
10d09e33
MS		 4351 else if (errno == EWOULDBLOCK || errno == EAGAIN)
4352 {
4353 if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data))
4354 continue;
4355 else if (!http->timeout_cb && errno == EAGAIN)
4356 continue;
4357
4358 http->error = errno;
4359 }
ef416fc2 4360 else if (errno != http->error && errno != ECONNRESET)
4361 {
4362 http->error = errno;
4363 continue;
4364 }
4365#endif /* WIN32 */
4366
f8b3a85b
MS		 4367 DEBUG_printf(("3http_write: error writing data (%s).",
4368 strerror(http->error)));
ef416fc2 4369
4370 return (-1);
4371 }
4372
4373 buffer += bytes;
4374 tbytes += bytes;
4375 length -= bytes;
4376 }
4377
4378#ifdef DEBUG
ae71f5de 4379 http_debug_hex("http_write", buffer - tbytes, tbytes);
ef416fc2 4380#endif /* DEBUG */
4381
f8b3a85b
MS		 4382 DEBUG_printf(("3http_write: Returning %d.", tbytes));
4383
ef416fc2 4384 return (tbytes);
4385}
4386
4387
4388/*
4389 * 'http_write_chunk()' - Write a chunked buffer.
4390 */
4391
4392static int /* O - Number bytes written */
568fa3fa 4393http_write_chunk(http_t *http, /* I - Connection to server */
ef416fc2 4394 const char *buffer, /* I - Buffer to write */
4395 int length) /* I - Length of buffer */
4396{
4397 char header[255]; /* Chunk header */
4398 int bytes; /* Bytes written */
4399
f11a948a 4400
e07d4801 4401 DEBUG_printf(("7http_write_chunk(http=%p, buffer=%p, length=%d)",
ef416fc2 4402 http, buffer, length));
4403
4404 /*
4405 * Write the chunk header, data, and trailer.
4406 */
4407
4408 sprintf(header, "%x\r\n", length);
b86bc4cf 4409 if (http_write(http, header, (int)strlen(header)) < 0)
ef416fc2 4410 {
e07d4801 4411 DEBUG_puts("8http_write_chunk: http_write of length failed!");
ef416fc2 4412 return (-1);
4413 }
4414
4415 if ((bytes = http_write(http, buffer, length)) < 0)
4416 {
e07d4801 4417 DEBUG_puts("8http_write_chunk: http_write of buffer failed!");
ef416fc2 4418 return (-1);
4419 }
4420
4421 if (http_write(http, "\r\n", 2) < 0)
4422 {
e07d4801 4423 DEBUG_puts("8http_write_chunk: http_write of CR LF failed!");
ef416fc2 4424 return (-1);
4425 }
4426
4427 return (bytes);
4428}
4429
4430
4431#ifdef HAVE_SSL
4432/*
4433 * 'http_write_ssl()' - Write to a SSL/TLS connection.
4434 */
4435
4436static int /* O - Bytes written */
568fa3fa 4437http_write_ssl(http_t *http, /* I - Connection to server */
ef416fc2 4438 const char *buf, /* I - Buffer holding data */
4439 int len) /* I - Length of buffer */
4440{
f8b3a85b
MS		 4441 ssize_t result; /* Return value */
4442
4443
4444 DEBUG_printf(("2http_write_ssl(http=%p, buf=%p, len=%d)", http, buf, len));
4445
ef416fc2 4446# if defined(HAVE_LIBSSL)
f8b3a85b 4447 result = SSL_write((SSL *)(http->tls), buf, len);
ef416fc2 4448
4449# elif defined(HAVE_GNUTLS)
7cf5915e 4450 result = gnutls_record_send(http->tls, buf, len);
ef55b745
MS		 4451
4452 if (result < 0 && !errno)
4453 {
4454 /*
4455 * Convert GNU TLS error to errno value...
4456 */
4457
4458 switch (result)
4459 {
4460 case GNUTLS_E_INTERRUPTED :
4461 errno = EINTR;
4462 break;
4463
4464 case GNUTLS_E_AGAIN :
4465 errno = EAGAIN;
4466 break;
4467
4468 default :
4469 errno = EPIPE;
4470 break;
4471 }
4472
4473 result = -1;
4474 }
4475
ef416fc2 4476# elif defined(HAVE_CDSASSL)
4477 OSStatus error; /* Error info */
4478 size_t processed; /* Number of bytes processed */
4479
4480
7cf5915e 4481 error = SSLWrite(http->tls, buf, len, &processed);
ef416fc2 4482
fa73b229 4483 switch (error)
ef416fc2 4484 {
fa73b229 4485 case 0 :
4486 result = (int)processed;
4487 break;
4488 case errSSLClosedGraceful :
4489 result = 0;
4490 break;
4491 case errSSLWouldBlock :
b423cd4c 4492 if (processed)
4493 result = (int)processed;
4494 else
4495 {
4496 result = -1;
ef55b745 4497 errno = EINTR;
b423cd4c 4498 }
fa73b229 4499 break;
4500 default :
ef55b745 4501 errno = EPIPE;
fa73b229 4502 result = -1;
4503 break;
ef416fc2 4504 }
cc754834
MS		 4505# elif defined(HAVE_SSPISSL)
4506 return _sspiWrite((_sspi_struct_t*) http->tls, (void*) buf, len);
ef416fc2 4507# endif /* HAVE_LIBSSL */
f8b3a85b
MS		 4508
4509 DEBUG_printf(("3http_write_ssl: Returning %d.", (int)result));
4510
4511 return ((int)result);
ef416fc2 4512}
4513#endif /* HAVE_SSL */
4514
4515
4516/*
b19ccc9e 4517 * End of "$Id: http.c 7850 2008-08-20 00:07:25Z mike $".
ef416fc2 4518 */
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