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[thirdparty/cups.git] / scheduler / client.c
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ef416fc2 1/*
e00b005a 2 * "$Id: client.c 5046 2006-02-01 22:11:58Z mike $"
ef416fc2 3 *
4 * Client routines for the Common UNIX Printing System (CUPS) scheduler.
5 *
6 * Copyright 1997-2006 by Easy Software Products, all rights reserved.
7 *
8 * These coded instructions, statements, and computer programs are the
9 * property of Easy Software Products and are protected by Federal
10 * copyright law. Distribution and use rights are outlined in the file
11 * "LICENSE.txt" which should have been included with this file. If this
12 * file is missing or damaged please contact Easy Software Products
13 * at:
14 *
15 * Attn: CUPS Licensing Information
16 * Easy Software Products
17 * 44141 Airport View Drive, Suite 204
18 * Hollywood, Maryland 20636 USA
19 *
20 * Voice: (301) 373-9600
21 * EMail: cups-info@cups.org
22 * WWW: http://www.cups.org
23 *
24 * Contents:
25 *
26 * cupsdAcceptClient() - Accept a new client.
27 * cupsdCloseAllClients() - Close all remote clients immediately.
28 * cupsdCloseClient() - Close a remote client.
29 * cupsdEncryptClient() - Enable encryption for the client...
30 * cupsdIsCGI() - Is the resource a CGI script/program?
31 * cupsdReadClient() - Read data from a client.
32 * cupsdSendCommand() - Send output from a command via HTTP.
33 * cupsdSendError() - Send an error message via HTTP.
34 * cupsdSendFile() - Send a file via HTTP.
35 * cupsdSendHeader() - Send an HTTP request.
36 * cupsdUpdateCGI() - Read status messages from CGI scripts and programs.
37 * cupsdWriteClient() - Write data to a client as needed.
38 * check_if_modified() - Decode an "If-Modified-Since" line.
39 * get_cdsa_server_certs() - Convert a keychain name into the CFArrayRef
40 * required by SSLSetCertificate.
41 * get_file() - Get a filename and state info.
42 * install_conf_file() - Install a configuration file.
43 * is_path_absolute() - Is a path absolute and free of relative elements.
44 * pipe_command() - Pipe the output of a command to the remote client.
45 */
46
47/*
48 * Include necessary headers...
49 */
50
51#include <cups/http-private.h>
52#include "cupsd.h"
53
54#ifdef HAVE_CDSASSL
55# include <Security/Security.h>
56#endif /* HAVE_CDSASSL */
57
58
59/*
60 * Local functions...
61 */
62
63static int check_if_modified(cupsd_client_t *con,
64 struct stat *filestats);
65#ifdef HAVE_CDSASSL
66static CFArrayRef get_cdsa_server_certs(void);
67#endif /* HAVE_CDSASSL */
68static char *get_file(cupsd_client_t *con, struct stat *filestats,
69 char *filename, int len);
70static http_status_t install_conf_file(cupsd_client_t *con);
71static int is_path_absolute(const char *path);
72static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
73 char *command, char *options, int root);
74
75
76/*
77 * 'cupsdAcceptClient()' - Accept a new client.
78 */
79
80void
81cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
82{
83 int i; /* Looping var */
84 int count; /* Count of connections on a host */
85 int val; /* Parameter value */
86 cupsd_client_t *con; /* New client pointer */
87 http_addrlist_t *addrlist, /* List of adddresses for host */
88 *addr; /* Current address */
89 socklen_t addrlen; /* Length of address */
90 char *hostname; /* Hostname for address */
91 http_addr_t temp; /* Temporary address variable */
92 static time_t last_dos = 0; /* Time of last DoS attack */
93
94
95 cupsdLogMessage(CUPSD_LOG_DEBUG2,
96 "cupsdAcceptClient(lis=%p) %d NumClients = %d",
97 lis, lis->fd, NumClients);
98
99 /*
100 * Make sure we don't have a full set of clients already...
101 */
102
103 if (NumClients == MaxClients)
104 return;
105
106 /*
107 * Get a pointer to the next available client...
108 */
109
110 con = Clients + NumClients;
111
112 memset(con, 0, sizeof(cupsd_client_t));
113 con->http.activity = time(NULL);
114 con->file = -1;
115 con->http.hostaddr = &(con->clientaddr);
116
117 /*
118 * Accept the client and get the remote address...
119 */
120
121 addrlen = sizeof(http_addr_t);
122
123 if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
124 &addrlen)) < 0)
125 {
126 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
127 strerror(errno));
128 return;
129 }
130
131#ifdef AF_INET6
132 if (lis->address.addr.sa_family == AF_INET6)
133 {
134 /*
135 * Save the connected port number...
136 */
137
138 con->http.hostaddr->ipv6.sin6_port = lis->address.ipv6.sin6_port;
139
140 /*
141 * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
142 * can more easily use...
143 */
144
145 if (con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
146 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
147 ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
148 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
149 }
150 else
151#endif /* AF_INET6 */
152 if (lis->address.addr.sa_family == AF_INET)
153 con->http.hostaddr->ipv4.sin_port = lis->address.ipv4.sin_port;
154
155 /*
156 * Check the number of clients on the same address...
157 */
158
159 for (i = 0, count = 0; i < NumClients; i ++)
160 if (httpAddrEqual(Clients[i].http.hostaddr, con->http.hostaddr))
161 {
162 count ++;
163 if (count >= MaxClientsPerHost)
164 break;
165 }
166
167 if (count >= MaxClientsPerHost)
168 {
169 if ((time(NULL) - last_dos) >= 60)
170 {
171 last_dos = time(NULL);
172 cupsdLogMessage(CUPSD_LOG_WARN,
173 "Possible DoS attack - more than %d clients connecting from %s!",
174 MaxClientsPerHost, Clients[i].http.hostname);
175 }
176
177#ifdef WIN32
178 closesocket(con->http.fd);
179#else
180 close(con->http.fd);
181#endif /* WIN32 */
182
183 return;
184 }
185
186 /*
187 * Get the hostname or format the IP address as needed...
188 */
189
190 if (httpAddrLocalhost(con->http.hostaddr))
191 {
192 /*
193 * Map accesses from the loopback interface to "localhost"...
194 */
195
196 strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
197 hostname = con->http.hostname;
198 }
199 else
200 {
201 /*
202 * Map accesses from the same host to the server name.
203 */
204
205 for (addr = ServerAddrs; addr; addr = addr->next)
206 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
207 break;
208
209 if (addr)
210 {
211 strlcpy(con->http.hostname, ServerName, sizeof(con->http.hostname));
212 hostname = con->http.hostname;
213 }
214 else if (HostNameLookups)
215 hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
216 sizeof(con->http.hostname));
217 else
218 {
219 hostname = NULL;
220 httpAddrString(con->http.hostaddr, con->http.hostname,
221 sizeof(con->http.hostname));
222 }
223 }
224
225 if (hostname == NULL && HostNameLookups == 2)
226 {
227 /*
228 * Can't have an unresolved IP address with double-lookups enabled...
229 */
230
231 cupsdLogMessage(CUPSD_LOG_DEBUG2,
232 "cupsdAcceptClient: Closing connection %d...",
233 con->http.fd);
234
235#ifdef WIN32
236 closesocket(con->http.fd);
237#else
238 close(con->http.fd);
239#endif /* WIN32 */
240
241 cupsdLogMessage(CUPSD_LOG_WARN,
242 "Name lookup failed - connection from %s closed!",
243 con->http.hostname);
244 return;
245 }
246
247 if (HostNameLookups == 2)
248 {
249 /*
250 * Do double lookups as needed...
251 */
252
253 if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL)) != NULL)
254 {
255 /*
256 * See if the hostname maps to the same IP address...
257 */
258
259 for (addr = addrlist; addr; addr = addr->next)
260 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
261 break;
262 }
263 else
264 addr = NULL;
265
266 httpAddrFreeList(addrlist);
267
268 if (!addr)
269 {
270 /*
271 * Can't have a hostname that doesn't resolve to the same IP address
272 * with double-lookups enabled...
273 */
274
275 cupsdLogMessage(CUPSD_LOG_DEBUG2,
276 "cupsdAcceptClient: Closing connection %d...",
277 con->http.fd);
278
279#ifdef WIN32
280 closesocket(con->http.fd);
281#else
282 close(con->http.fd);
283#endif /* WIN32 */
284
285 cupsdLogMessage(CUPSD_LOG_WARN,
286 "IP lookup failed - connection from %s closed!",
287 con->http.hostname);
288 return;
289 }
290 }
291
292#ifdef AF_INET6
293 if (con->http.hostaddr->addr.sa_family == AF_INET6)
294 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv6)",
295 con->http.fd, con->http.hostname,
296 ntohs(con->http.hostaddr->ipv6.sin6_port));
297 else
298#endif /* AF_INET6 */
299#ifdef AF_LOCAL
300 if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
301 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s (Domain)",
302 con->http.fd, con->http.hostname);
303 else
304#endif /* AF_LOCAL */
305 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv4)",
306 con->http.fd, con->http.hostname,
307 ntohs(con->http.hostaddr->ipv4.sin_port));
308
309 /*
310 * Get the local address the client connected to...
311 */
312
313 addrlen = sizeof(temp);
314 if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
315 {
316 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
317 strerror(errno));
318
319 strcpy(con->servername, "localhost");
320 con->serverport = LocalPort;
321 }
322 else
323 {
324#ifdef AF_INET6
325 if (temp.addr.sa_family == AF_INET6)
326 {
327 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
328 con->serverport = ntohs(lis->address.ipv6.sin6_port);
329 }
330 else
331#endif /* AF_INET6 */
332 if (temp.addr.sa_family == AF_INET)
333 {
334 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
335 con->serverport = ntohs(lis->address.ipv4.sin_port);
336 }
337 else
338 {
339 strcpy(con->servername, "localhost");
340 con->serverport = LocalPort;
341 }
342 }
343
344 cupsdLogMessage(CUPSD_LOG_DEBUG2,
345 "cupsdAcceptClient: %d connected to server on %s:%d",
346 con->http.fd, con->servername, con->serverport);
347
348 /*
349 * Using TCP_NODELAY improves responsiveness, especially on systems
350 * with a slow loopback interface... Since we write large buffers
351 * when sending print files and requests, there shouldn't be any
352 * performance penalty for this...
353 */
354
355 val = 1;
356 setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
357
358 /*
359 * Close this file on all execs...
360 */
361
362 fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
363
364 /*
365 * Add the socket to the select() input mask.
366 */
367
368 cupsdLogMessage(CUPSD_LOG_DEBUG2,
369 "cupsdAcceptClient: Adding fd %d to InputSet...",
370 con->http.fd);
371 FD_SET(con->http.fd, InputSet);
372
373 NumClients ++;
374
375 /*
376 * Temporarily suspend accept()'s until we lose a client...
377 */
378
379 if (NumClients == MaxClients)
380 cupsdPauseListening();
381
382#ifdef HAVE_SSL
383 /*
384 * See if we are connecting on a secure port...
385 */
386
387 if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
388 {
389 /*
390 * https connection; go secure...
391 */
392
393 con->http.encryption = HTTP_ENCRYPT_ALWAYS;
394
395 cupsdEncryptClient(con);
396 }
397 else
398 con->auto_ssl = 1;
399#endif /* HAVE_SSL */
400}
401
402
403/*
404 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
405 */
406
407void
408cupsdCloseAllClients(void)
409{
410 while (NumClients > 0)
411 cupsdCloseClient(Clients);
412}
413
414
415/*
416 * 'cupsdCloseClient()' - Close a remote client.
417 */
418
419int /* O - 1 if partial close, 0 if fully closed */
420cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
421{
422 int partial; /* Do partial close for SSL? */
423#ifdef HAVE_LIBSSL
424 SSL_CTX *context; /* Context for encryption */
425 SSL *conn; /* Connection for encryption */
426 unsigned long error; /* Error code */
427#elif defined(HAVE_GNUTLS)
428 http_tls_t *conn; /* TLS connection information */
429 int error; /* Error code */
430 gnutls_certificate_server_credentials *credentials;
431 /* TLS credentials */
432#endif /* HAVE_LIBSSL */
433
434
435 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdCloseClient: %d", con->http.fd);
436
437 /*
438 * Flush pending writes before closing...
439 */
440
441 httpFlushWrite(HTTP(con));
442
443 partial = 0;
444
445#ifdef HAVE_SSL
446 /*
447 * Shutdown encryption as needed...
448 */
449
450 if (con->http.tls)
451 {
452 partial = 1;
453
454# ifdef HAVE_LIBSSL
455 conn = (SSL *)(con->http.tls);
456 context = SSL_get_SSL_CTX(conn);
457
458 switch (SSL_shutdown(conn))
459 {
460 case 1 :
461 cupsdLogMessage(CUPSD_LOG_INFO,
462 "cupsdCloseClient: SSL shutdown successful!");
463 break;
464 case -1 :
465 cupsdLogMessage(CUPSD_LOG_ERROR,
466 "cupsdCloseClient: Fatal error during SSL shutdown!");
467 default :
468 while ((error = ERR_get_error()) != 0)
469 cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdCloseClient: %s",
470 ERR_error_string(error, NULL));
471 break;
472 }
473
474 SSL_CTX_free(context);
475 SSL_free(conn);
476
477# elif defined(HAVE_GNUTLS)
478 conn = (http_tls_t *)(con->http.tls);
479 credentials = (gnutls_certificate_server_credentials *)(conn->credentials);
480
481 error = gnutls_bye(conn->session, GNUTLS_SHUT_WR);
482 switch (error)
483 {
484 case GNUTLS_E_SUCCESS:
485 cupsdLogMessage(CUPSD_LOG_INFO,
486 "cupsdCloseClient: SSL shutdown successful!");
487 break;
488 default:
489 cupsdLogMessage(CUPSD_LOG_ERROR,
490 "cupsdCloseClient: %s", gnutls_strerror(error));
491 break;
492 }
493
494 gnutls_deinit(conn->session);
495 gnutls_certificate_free_credentials(*credentials);
496 free(credentials);
497 free(conn);
498
499# elif defined(HAVE_CDSASSL)
500 SSLClose((SSLContextRef)con->http.tls);
501 SSLDisposeContext((SSLContextRef)con->http.tls);
502# endif /* HAVE_LIBSSL */
503
504 con->http.tls = NULL;
505 }
506#endif /* HAVE_SSL */
507
508 if (con->pipe_pid != 0)
509 {
510 /*
511 * Stop any CGI process...
512 */
513
514 cupsdLogMessage(CUPSD_LOG_DEBUG2,
515 "cupsdCloseClient: %d Killing process ID %d...",
516 con->http.fd, con->pipe_pid);
517 cupsdEndProcess(con->pipe_pid, 1);
518 con->pipe_pid = 0;
519 }
520
521 if (con->file >= 0)
522 {
523 if (FD_ISSET(con->file, InputSet))
524 {
525 cupsdLogMessage(CUPSD_LOG_DEBUG2,
526 "cupsdCloseClient: %d Removing fd %d from InputSet...",
527 con->http.fd, con->file);
528 FD_CLR(con->file, InputSet);
529 }
530
531 cupsdLogMessage(CUPSD_LOG_DEBUG2,
532 "cupsdCloseClient: %d Closing data file %d.",
533 con->http.fd, con->file);
534
535 close(con->file);
536 con->file = -1;
537 }
538
539 /*
540 * Close the socket and clear the file from the input set for select()...
541 */
542
543 if (con->http.fd > 0)
544 {
545 if (partial)
546 {
547 /*
548 * Only do a partial close so that the encrypted client gets everything.
549 */
550
551 cupsdLogMessage(CUPSD_LOG_DEBUG2,
552 "cupsdCloseClient: Removing fd %d from OutputSet...",
553 con->http.fd);
554 shutdown(con->http.fd, 0);
555 FD_CLR(con->http.fd, OutputSet);
556 }
557 else
558 {
559 /*
560 * Shut the socket down fully...
561 */
562
563 cupsdLogMessage(CUPSD_LOG_DEBUG2,
564 "cupsdCloseClient: Removing fd %d from InputSet and OutputSet...",
565 con->http.fd);
566 close(con->http.fd);
567 FD_CLR(con->http.fd, InputSet);
568 FD_CLR(con->http.fd, OutputSet);
569 con->http.fd = -1;
570 }
571 }
572
573 if (!partial)
574 {
575 /*
576 * Free memory...
577 */
578
579 if (con->http.input_set)
580 free(con->http.input_set);
581
582 httpClearCookie(HTTP(con));
583
584 cupsdClearString(&con->filename);
585 cupsdClearString(&con->command);
586 cupsdClearString(&con->options);
587
588 if (con->request)
589 {
590 ippDelete(con->request);
591 con->request = NULL;
592 }
593
594 if (con->response)
595 {
596 ippDelete(con->response);
597 con->response = NULL;
598 }
599
600 if (con->language)
601 {
602 cupsLangFree(con->language);
603 con->language = NULL;
604 }
605
606 /*
607 * Re-enable new client connections if we are going back under the
608 * limit...
609 */
610
611 if (NumClients == MaxClients)
612 cupsdResumeListening();
613
614 /*
615 * Compact the list of clients as necessary...
616 */
617
618 NumClients --;
619
620 if (con < (Clients + NumClients))
621 memmove(con, con + 1, (Clients + NumClients - con) * sizeof(cupsd_client_t));
622 }
623
624 return (partial);
625}
626
627
628/*
629 * 'cupsdEncryptClient()' - Enable encryption for the client...
630 */
631
632int /* O - 1 on success, 0 on error */
633cupsdEncryptClient(cupsd_client_t *con) /* I - Client to encrypt */
634{
635#ifdef HAVE_LIBSSL
636 SSL_CTX *context; /* Context for encryption */
637 SSL *conn; /* Connection for encryption */
638 unsigned long error; /* Error code */
639
640
641 /*
642 * Create the SSL context and accept the connection...
643 */
644
645 context = SSL_CTX_new(SSLv23_server_method());
646
647 SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
648 SSL_CTX_use_PrivateKey_file(context, ServerKey, SSL_FILETYPE_PEM);
649 SSL_CTX_use_certificate_file(context, ServerCertificate, SSL_FILETYPE_PEM);
650
651 conn = SSL_new(context);
652
653 SSL_set_fd(conn, con->http.fd);
654 if (SSL_accept(conn) != 1)
655 {
656 cupsdLogMessage(CUPSD_LOG_ERROR,
657 "cupsdEncryptClient: Unable to encrypt connection from %s!",
658 con->http.hostname);
659
660 while ((error = ERR_get_error()) != 0)
661 cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdEncryptClient: %s",
662 ERR_error_string(error, NULL));
663
664 SSL_CTX_free(context);
665 SSL_free(conn);
666 return (0);
667 }
668
669 cupsdLogMessage(CUPSD_LOG_DEBUG,
670 "cupsdEncryptClient: %d Connection from %s now encrypted.",
671 con->http.fd, con->http.hostname);
672
673 con->http.tls = conn;
674 return (1);
675
676#elif defined(HAVE_GNUTLS)
677 http_tls_t *conn; /* TLS session object */
678 int error; /* Error code */
679 gnutls_certificate_server_credentials *credentials;
680 /* TLS credentials */
681
682 /*
683 * Create the SSL object and perform the SSL handshake...
684 */
685
686 conn = (http_tls_t *)malloc(sizeof(gnutls_session));
687
688 if (conn == NULL)
689 return (0);
690
691 credentials = (gnutls_certificate_server_credentials *)
692 malloc(sizeof(gnutls_certificate_server_credentials));
693 if (credentials == NULL)
694 {
695 cupsdLogMessage(CUPSD_LOG_ERROR,
696 "cupsdEncryptClient: Unable to encrypt connection from %s!",
697 con->http.hostname);
698 cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdEncryptClient: %s", strerror(errno));
699
700 free(conn);
701 return (0);
702 }
703
704 gnutls_certificate_allocate_credentials(credentials);
705 gnutls_certificate_set_x509_key_file(*credentials, ServerCertificate,
706 ServerKey, GNUTLS_X509_FMT_PEM);
707
708 gnutls_init(&(conn->session), GNUTLS_SERVER);
709 gnutls_set_default_priority(conn->session);
710 gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
711 gnutls_transport_set_ptr(conn->session, con->http.fd);
712
713 error = gnutls_handshake(conn->session);
714
715 if (error != GNUTLS_E_SUCCESS)
716 {
717 cupsdLogMessage(CUPSD_LOG_ERROR,
718 "cupsdEncryptClient: Unable to encrypt connection from %s!",
719 con->http.hostname);
720 cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdEncryptClient: %s",
721 gnutls_strerror(error));
722
723 gnutls_deinit(conn->session);
724 gnutls_certificate_free_credentials(*credentials);
725 free(conn);
726 free(credentials);
727 return (0);
728 }
729
730 cupsdLogMessage(CUPSD_LOG_DEBUG,
731 "cupsdEncryptClient: %d Connection from %s now encrypted.",
732 con->http.fd, con->http.hostname);
733
734 conn->credentials = credentials;
735 con->http.tls = conn;
736 return (1);
737
738#elif defined(HAVE_CDSASSL)
739 OSStatus error; /* Error info */
740 SSLContextRef conn; /* New connection */
741 int allowExpired; /* Allow expired certificates? */
742 int allowAnyRoot; /* Allow any root certificate? */
743
744
745 conn = NULL;
746 error = SSLNewContext(true, &conn);
747 allowExpired = 1;
748 allowAnyRoot = 1;
749
750 if (!ServerCertificatesArray)
751 ServerCertificatesArray = get_cdsa_server_certs();
752
753 if (!ServerCertificatesArray)
754 {
755 cupsdLogMessage(CUPSD_LOG_ERROR,
756 "EncryptClient: Could not find signing key in keychain "
757 "\"%s\"", ServerCertificate);
758 error = errSSLBadConfiguration;
759 }
760
761 if (!error)
762 error = SSLSetIOFuncs(conn, _httpReadCDSA, _httpWriteCDSA);
763
764 if (!error)
765 error = SSLSetProtocolVersion(conn, kSSLProtocol3);
766
767 if (!error)
768 error = SSLSetConnection(conn, (SSLConnectionRef)con->http.fd);
769
770 if (!error)
771 error = SSLSetPeerDomainName(conn, ServerName, strlen(ServerName) + 1);
772
773 /* have to do these options before setting server certs */
774 if (!error && allowExpired)
775 error = SSLSetAllowsExpiredCerts(conn, true);
776
777 if (!error && allowAnyRoot)
778 error = SSLSetAllowsAnyRoot(conn, true);
779
780 if (!error && ServerCertificatesArray)
fa73b229 781 {
ef416fc2 782 error = SSLSetCertificate(conn, ServerCertificatesArray);
783
fa73b229 784 /*
785 * Perform SSL/TLS handshake
786 */
787
788 if (!error)
789 {
790 do
791 {
792 error = SSLHandshake(conn);
793 }
794 while (error == errSSLWouldBlock);
795 }
ef416fc2 796 }
ef416fc2 797
798 if (error)
799 {
800 cupsdLogMessage(CUPSD_LOG_ERROR,
801 "cupsdEncryptClient: Unable to encrypt connection from %s!",
802 con->http.hostname);
803
804 cupsdLogMessage(CUPSD_LOG_ERROR,
805 "cupsdEncryptClient: CDSA error code is %d", (int)error);
806
807 con->http.error = error;
808 con->http.status = HTTP_ERROR;
809
810 if (conn != NULL)
811 SSLDisposeContext(conn);
812
813 return (0);
814 }
815
816 cupsdLogMessage(CUPSD_LOG_DEBUG,
817 "cupsdEncryptClient: %d Connection from %s now encrypted.",
818 con->http.fd, con->http.hostname);
819
820 con->http.tls = conn;
821 return (1);
822
823#else
824 return (0);
825#endif /* HAVE_LIBSSL */
826}
827
828
829/*
830 * 'cupsdIsCGI()' - Is the resource a CGI script/program?
831 */
832
833int /* O - 1 = CGI, 0 = file */
834cupsdIsCGI(cupsd_client_t *con, /* I - Client connection */
835 const char *filename, /* I - Real filename */
836 struct stat *filestats, /* I - File information */
837 mime_type_t *type) /* I - MIME type */
838{
839 const char *options; /* Options on URL */
840
841
842 cupsdLogMessage(CUPSD_LOG_DEBUG2,
843 "cupsdIsCGI(con=%p, filename=\"%s\", filestats=%p, type=%s/%s)\n",
844 con, filename, filestats, type ? type->super : "unknown",
845 type ? type->type : "unknown");
846
847 /*
848 * Get the options, if any...
849 */
850
851 if ((options = strchr(con->uri, '?')) != NULL)
852 options ++;
853
854 /*
855 * Check for known types...
856 */
857
858 if (!type || strcasecmp(type->super, "application"))
859 {
860 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsCGI: Returning 0...");
861 return (0);
862 }
863
864 if (!strcasecmp(type->type, "x-httpd-cgi") &&
865 (filestats->st_mode & 0111))
866 {
867 /*
868 * "application/x-httpd-cgi" is a CGI script.
869 */
870
871 cupsdSetString(&con->command, filename);
872
873 filename = strrchr(filename, '/') + 1; /* Filename always absolute */
874
875 if (options)
876 cupsdSetStringf(&con->options, "%s %s", filename, options);
877 else
878 cupsdSetStringf(&con->options, "%s", filename);
879
880 cupsdLogMessage(CUPSD_LOG_DEBUG2,
881 "cupsdIsCGI: Returning 1 with command=\"%s\" and options=\"%s\"",
882 con->command, con->options);
883
884 return (1);
885 }
886#ifdef HAVE_JAVA
887 else if (!strcasecmp(type->type, "x-httpd-java"))
888 {
889 /*
890 * "application/x-httpd-java" is a Java servlet.
891 */
892
893 cupsdSetString(&con->command, CUPS_JAVA);
894
895 if (options)
896 cupsdSetStringf(&con->options, "java %s %s", filename, options);
897 else
898 cupsdSetStringf(&con->options, "java %s", filename);
899
900 cupsdLogMessage(CUPSD_LOG_DEBUG2,
901 "cupsdIsCGI: Returning 1 with command=\"%s\" and options=\"%s\"",
902 con->command, con->options);
903
904 return (1);
905 }
906#endif /* HAVE_JAVA */
907#ifdef HAVE_PERL
908 else if (!strcasecmp(type->type, "x-httpd-perl"))
909 {
910 /*
911 * "application/x-httpd-perl" is a Perl page.
912 */
913
914 cupsdSetString(&con->command, CUPS_PERL);
915
916 if (options)
917 cupsdSetStringf(&con->options, "perl %s %s", filename, options);
918 else
919 cupsdSetStringf(&con->options, "perl %s", filename);
920
921 cupsdLogMessage(CUPSD_LOG_DEBUG2,
922 "cupsdIsCGI: Returning 1 with command=\"%s\" and options=\"%s\"",
923 con->command, con->options);
924
925 return (1);
926 }
927#endif /* HAVE_PERL */
928#ifdef HAVE_PHP
929 else if (!strcasecmp(type->type, "x-httpd-php"))
930 {
931 /*
932 * "application/x-httpd-php" is a PHP page.
933 */
934
935 cupsdSetString(&con->command, CUPS_PHP);
936
937 if (options)
938 cupsdSetStringf(&con->options, "php %s %s", filename, options);
939 else
940 cupsdSetStringf(&con->options, "php %s", filename);
941
942 cupsdLogMessage(CUPSD_LOG_DEBUG2,
943 "cupsdIsCGI: Returning 1 with command=\"%s\" and options=\"%s\"",
944 con->command, con->options);
945
946 return (1);
947 }
948#endif /* HAVE_PHP */
949#ifdef HAVE_PYTHON
950 else if (!strcasecmp(type->type, "x-httpd-python"))
951 {
952 /*
953 * "application/x-httpd-python" is a Python page.
954 */
955
956 cupsdSetString(&con->command, CUPS_PYTHON);
957
958 if (options)
959 cupsdSetStringf(&con->options, "python %s %s", filename, options);
960 else
961 cupsdSetStringf(&con->options, "python %s", filename);
962
963 cupsdLogMessage(CUPSD_LOG_DEBUG2,
964 "cupsdIsCGI: Returning 1 with command=\"%s\" and options=\"%s\"",
965 con->command, con->options);
966
967 return (1);
968 }
969#endif /* HAVE_PYTHON */
970
971 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsCGI: Returning 0...");
972
973 return (0);
974}
975
976
977/*
978 * 'cupsdReadClient()' - Read data from a client.
979 */
980
981int /* O - 1 on success, 0 on error */
982cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
983{
984 char line[32768], /* Line from client... */
985 operation[64], /* Operation code from socket */
986 version[64], /* HTTP version number string */
987 locale[64], /* Locale */
988 *ptr; /* Pointer into strings */
989 int major, minor; /* HTTP version numbers */
990 http_status_t status; /* Transfer status */
991 ipp_state_t ipp_state; /* State of IPP transfer */
992 int bytes; /* Number of bytes to POST */
993 char *filename; /* Name of file for GET/HEAD */
994 char buf[1024]; /* Buffer for real filename */
995 struct stat filestats; /* File information */
996 mime_type_t *type; /* MIME type of file */
997 cupsd_printer_t *p; /* Printer */
998 static unsigned request_id = 0; /* Request ID for temp files */
999
1000
1001 status = HTTP_CONTINUE;
1002
1003 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1004 "cupsdReadClient: %d, used=%d, file=%d state=%d",
1005 con->http.fd, con->http.used, con->file, con->http.state);
1006
1007 if (con->http.error)
1008 {
1009 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: http error seen...");
1010 return (cupsdCloseClient(con));
1011 }
1012
1013#ifdef HAVE_SSL
1014 if (con->auto_ssl)
1015 {
1016 /*
1017 * Automatically check for a SSL/TLS handshake...
1018 */
1019
1020 con->auto_ssl = 0;
1021
1022 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
1023 (!buf[0] || !strchr("DGHOPT", buf[0])))
1024 {
1025 /*
1026 * Encrypt this connection...
1027 */
1028
1029 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1030 "cupsdReadClient: Saw first byte %02X, auto-negotiating SSL/TLS session...",
1031 buf[0] & 255);
1032
1033 cupsdEncryptClient(con);
1034 return (1);
1035 }
1036 }
1037#endif /* HAVE_SSL */
1038
1039 switch (con->http.state)
1040 {
1041 case HTTP_WAITING :
1042 /*
1043 * See if we've received a request line...
1044 */
1045
1046 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
1047 {
1048 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1049 "cupsdReadClient: httpGets returned EOF...");
1050 return (cupsdCloseClient(con));
1051 }
1052
1053 /*
1054 * Ignore blank request lines...
1055 */
1056
1057 if (line[0] == '\0')
1058 break;
1059
1060 /*
1061 * Clear other state variables...
1062 */
1063
1064 httpClearFields(HTTP(con));
1065
1066 con->http.activity = time(NULL);
1067 con->http.version = HTTP_1_0;
1068 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1069 con->http.data_encoding = HTTP_ENCODE_LENGTH;
1070 con->http.data_remaining = 0;
1071 con->http._data_remaining = 0;
1072 con->operation = HTTP_WAITING;
1073 con->bytes = 0;
1074 con->file = -1;
1075 con->file_ready = 0;
1076 con->pipe_pid = 0;
1077 con->username[0] = '\0';
1078 con->password[0] = '\0';
1079 con->uri[0] = '\0';
1080
1081 cupsdClearString(&con->command);
1082 cupsdClearString(&con->options);
1083
1084 if (con->language != NULL)
1085 {
1086 cupsLangFree(con->language);
1087 con->language = NULL;
1088 }
1089
1090 /*
1091 * Grab the request line...
1092 */
1093
1094 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
1095 {
1096 case 1 :
1097 cupsdLogMessage(CUPSD_LOG_ERROR,
1098 "Bad request line \"%s\" from %s!", line,
1099 con->http.hostname);
1100 cupsdSendError(con, HTTP_BAD_REQUEST);
1101 return (cupsdCloseClient(con));
1102 case 2 :
1103 con->http.version = HTTP_0_9;
1104 break;
1105 case 3 :
1106 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
1107 {
1108 cupsdLogMessage(CUPSD_LOG_ERROR,
1109 "Bad request line \"%s\" from %s!", line,
1110 con->http.hostname);
1111 cupsdSendError(con, HTTP_BAD_REQUEST);
1112 return (cupsdCloseClient(con));
1113 }
1114
1115 if (major < 2)
1116 {
1117 con->http.version = (http_version_t)(major * 100 + minor);
1118 if (con->http.version == HTTP_1_1 && KeepAlive)
1119 con->http.keep_alive = HTTP_KEEPALIVE_ON;
1120 else
1121 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1122 }
1123 else
1124 {
1125 cupsdSendError(con, HTTP_NOT_SUPPORTED);
1126 return (cupsdCloseClient(con));
1127 }
1128 break;
1129 }
1130
1131 /*
1132 * Handle full URLs in the request line...
1133 */
1134
1135 if (strcmp(con->uri, "*"))
1136 {
1137 char method[HTTP_MAX_URI], /* Method/scheme */
1138 userpass[HTTP_MAX_URI], /* Username:password */
1139 hostname[HTTP_MAX_URI], /* Hostname */
1140 resource[HTTP_MAX_URI]; /* Resource path */
1141 int port; /* Port number */
1142
1143
1144 /*
1145 * Separate the URI into its components...
1146 */
1147
a4d04587 1148 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
1149 method, sizeof(method),
ef416fc2 1150 userpass, sizeof(userpass),
1151 hostname, sizeof(hostname), &port,
1152 resource, sizeof(resource));
1153
1154 /*
1155 * Only allow URIs with the servername, localhost, or an IP
1156 * address...
1157 */
1158
1159 if (strcmp(method, "file") &&
1160 strcasecmp(hostname, ServerName) &&
1161 strcasecmp(hostname, "localhost") &&
1162 !isdigit(hostname[0]))
1163 {
1164 /*
1165 * Nope, we don't do proxies...
1166 */
1167
1168 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad URI \"%s\" in request!",
1169 con->uri);
1170 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED);
1171 return (cupsdCloseClient(con));
1172 }
1173
1174 /*
1175 * Copy the resource portion back into the URI; both resource and
1176 * con->uri are HTTP_MAX_URI bytes in size...
1177 */
1178
1179 strcpy(con->uri, resource);
1180 }
1181
1182 /*
1183 * Process the request...
1184 */
1185
1186 if (!strcmp(operation, "GET"))
1187 con->http.state = HTTP_GET;
1188 else if (!strcmp(operation, "PUT"))
1189 con->http.state = HTTP_PUT;
1190 else if (!strcmp(operation, "POST"))
1191 con->http.state = HTTP_POST;
1192 else if (!strcmp(operation, "DELETE"))
1193 con->http.state = HTTP_DELETE;
1194 else if (!strcmp(operation, "TRACE"))
1195 con->http.state = HTTP_TRACE;
1196 else if (!strcmp(operation, "OPTIONS"))
1197 con->http.state = HTTP_OPTIONS;
1198 else if (!strcmp(operation, "HEAD"))
1199 con->http.state = HTTP_HEAD;
1200 else
1201 {
1202 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad operation \"%s\"!", operation);
1203 cupsdSendError(con, HTTP_BAD_REQUEST);
1204 return (cupsdCloseClient(con));
1205 }
1206
1207 con->start = time(NULL);
1208 con->operation = con->http.state;
1209
1210 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %s %s HTTP/%d.%d", con->http.fd,
1211 operation, con->uri,
1212 con->http.version / 100, con->http.version % 100);
1213
1214 con->http.status = HTTP_OK;
1215
1216 case HTTP_OPTIONS :
1217 case HTTP_DELETE :
1218 case HTTP_GET :
1219 case HTTP_HEAD :
1220 case HTTP_POST :
1221 case HTTP_PUT :
1222 case HTTP_TRACE :
1223 /*
1224 * Parse incoming parameters until the status changes...
1225 */
1226
1227 status = httpUpdate(HTTP(con));
1228
1229 if (status != HTTP_OK && status != HTTP_CONTINUE)
1230 {
1231 cupsdSendError(con, HTTP_BAD_REQUEST);
1232 return (cupsdCloseClient(con));
1233 }
1234 break;
1235
1236 default :
1237 break; /* Anti-compiler-warning-code */
1238 }
1239
1240 /*
1241 * Handle new transfers...
1242 */
1243
1244 if (status == HTTP_OK)
1245 {
1246 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
1247 {
1248 /*
1249 * Figure out the locale from the Accept-Language and Content-Type
1250 * fields...
1251 */
1252
1253 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ',')) != NULL)
1254 *ptr = '\0';
1255
1256 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ';')) != NULL)
1257 *ptr = '\0';
1258
1259 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE], "charset=")) != NULL)
1260 {
1261 /*
1262 * Combine language and charset, and trim any extra params in the
1263 * content-type.
1264 */
1265
1266 snprintf(locale, sizeof(locale), "%s.%s",
1267 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
1268
1269 if ((ptr = strchr(locale, ',')) != NULL)
1270 *ptr = '\0';
1271 }
1272 else
1273 snprintf(locale, sizeof(locale), "%s.%s",
1274 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], DefaultCharset);
1275
1276 con->language = cupsLangGet(locale);
1277 }
1278 else
1279 con->language = cupsLangGet(DefaultLocale);
1280
1281 cupsdAuthorize(con);
1282
1283 if (!strncmp(con->http.fields[HTTP_FIELD_CONNECTION], "Keep-Alive", 10) &&
1284 KeepAlive)
1285 con->http.keep_alive = HTTP_KEEPALIVE_ON;
1286
1287 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
1288 con->http.version >= HTTP_1_1)
1289 {
1290 /*
1291 * HTTP/1.1 and higher require the "Host:" field...
1292 */
1293
1294 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1295 return (cupsdCloseClient(con));
1296 }
1297 else if (con->operation == HTTP_OPTIONS)
1298 {
1299 /*
1300 * Do OPTIONS command...
1301 */
1302
1303 if (con->best && con->best->type != AUTH_NONE)
1304 {
1305 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL))
1306 return (cupsdCloseClient(con));
1307 }
1308
1309 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1310 con->http.tls == NULL)
1311 {
1312#ifdef HAVE_SSL
1313 /*
1314 * Do encryption stuff...
1315 */
1316
1317 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1318 return (cupsdCloseClient(con));
1319
1320 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1321 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1322 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1323 httpPrintf(HTTP(con), "\r\n");
1324
1325 cupsdEncryptClient(con);
1326#else
1327 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1328 return (cupsdCloseClient(con));
1329#endif /* HAVE_SSL */
1330 }
1331
1332 if (con->http.expect)
1333 {
1334 /**** TODO: send expected header ****/
1335 }
1336
1337 if (!cupsdSendHeader(con, HTTP_OK, NULL))
1338 return (cupsdCloseClient(con));
1339
1340 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1341 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1342 httpPrintf(HTTP(con), "\r\n");
1343 }
1344 else if (!is_path_absolute(con->uri))
1345 {
1346 /*
1347 * Protect against malicious users!
1348 */
1349
1350 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1351 return (cupsdCloseClient(con));
1352 }
1353 else
1354 {
1355 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1356 con->http.tls == NULL)
1357 {
1358#ifdef HAVE_SSL
1359 /*
1360 * Do encryption stuff...
1361 */
1362
1363 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1364 return (cupsdCloseClient(con));
1365
1366 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1367 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1368 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1369 httpPrintf(HTTP(con), "\r\n");
1370
1371 cupsdEncryptClient(con);
1372#else
1373 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1374 return (cupsdCloseClient(con));
1375#endif /* HAVE_SSL */
1376 }
1377
1378 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1379 {
1380 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1381 "cupsdReadClient: Unauthorized request for %s...\n",
1382 con->uri);
1383 cupsdSendError(con, status);
1384 return (cupsdCloseClient(con));
1385 }
1386
1387 if (con->http.expect)
1388 {
1389 /**** TODO: send expected header ****/
1390 }
1391
1392 switch (con->http.state)
1393 {
1394 case HTTP_GET_SEND :
1395 if (!strncmp(con->uri, "/printers/", 10) &&
1396 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1397 {
1398 /*
1399 * Send PPD file - get the real printer name since printer
1400 * names are not case sensitive but filenames can be...
1401 */
1402
1403 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1404
1405 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1406 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1407 else
1408 {
1409 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1410 return (cupsdCloseClient(con));
1411
1412 break;
1413 }
1414 }
1415
1416 if ((!strncmp(con->uri, "/admin", 6) &&
1417 strncmp(con->uri, "/admin/conf/", 12) &&
1418 strncmp(con->uri, "/admin/log/", 11)) ||
1419 !strncmp(con->uri, "/printers", 9) ||
1420 !strncmp(con->uri, "/classes", 8) ||
1421 !strncmp(con->uri, "/help", 5) ||
1422 !strncmp(con->uri, "/jobs", 5))
1423 {
1424 /*
1425 * Send CGI output...
1426 */
1427
1428 if (!strncmp(con->uri, "/admin", 6))
1429 {
1430 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1431 ServerBin);
1432
1433 if ((ptr = strchr(con->uri + 6, '?')) != NULL)
1434 cupsdSetStringf(&con->options, "admin%s", ptr);
1435 else
1436 cupsdSetString(&con->options, "admin");
1437 }
1438 else if (!strncmp(con->uri, "/printers", 9))
1439 {
1440 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1441 ServerBin);
1442 cupsdSetString(&con->options, con->uri + 9);
1443 }
1444 else if (!strncmp(con->uri, "/classes", 8))
1445 {
1446 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1447 ServerBin);
1448 cupsdSetString(&con->options, con->uri + 8);
1449 }
1450 else if (!strncmp(con->uri, "/jobs", 5))
1451 {
1452 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1453 ServerBin);
1454 cupsdSetString(&con->options, con->uri + 5);
1455 }
1456 else
1457 {
1458 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1459 ServerBin);
1460 cupsdSetString(&con->options, con->uri + 5);
1461 }
1462
1463 if (con->options[0] == '/')
1464 _cups_strcpy(con->options, con->options + 1);
1465
1466 if (!cupsdSendCommand(con, con->command, con->options, 0))
1467 {
1468 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1469 return (cupsdCloseClient(con));
1470 }
1471 else
1472 cupsdLogRequest(con, HTTP_OK);
1473
1474 if (con->http.version <= HTTP_1_0)
1475 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1476 }
1477 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1478 (strchr(con->uri + 12, '/') ||
1479 strlen(con->uri) == 12)) ||
1480 (!strncmp(con->uri, "/admin/log/", 11) &&
1481 (strchr(con->uri + 11, '/') ||
1482 strlen(con->uri) == 11)))
1483 {
1484 /*
1485 * GET can only be done to configuration files under
1486 * /admin/conf...
1487 */
1488
1489 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1490 return (cupsdCloseClient(con));
1491
1492 break;
1493 }
1494 else
1495 {
1496 /*
1497 * Serve a file...
1498 */
1499
1500 if ((filename = get_file(con, &filestats, buf,
1501 sizeof(buf))) == NULL)
1502 {
1503 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1504 return (cupsdCloseClient(con));
1505
1506 break;
1507 }
1508
1509 type = mimeFileType(MimeDatabase, filename, NULL);
1510
1511 if (cupsdIsCGI(con, filename, &filestats, type))
1512 {
1513 /*
1514 * Note: con->command and con->options were set by
1515 * cupsdIsCGI()...
1516 */
1517
1518 if (!cupsdSendCommand(con, con->command, con->options, 0))
1519 {
1520 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1521 return (cupsdCloseClient(con));
1522 }
1523 else
1524 cupsdLogRequest(con, HTTP_OK);
1525
1526 if (con->http.version <= HTTP_1_0)
1527 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1528 break;
1529 }
1530
1531 if (!check_if_modified(con, &filestats))
1532 {
1533 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1534 return (cupsdCloseClient(con));
1535 }
1536 else
1537 {
1538 if (type == NULL)
1539 strcpy(line, "text/plain");
1540 else
1541 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1542
1543 if (!cupsdSendFile(con, HTTP_OK, filename, line, &filestats))
1544 return (cupsdCloseClient(con));
1545 }
1546 }
1547 break;
1548
1549 case HTTP_POST_RECV :
1550 /*
1551 * See if the POST request includes a Content-Length field, and if
1552 * so check the length against any limits that are set...
1553 */
1554
1555 cupsdLogMessage(CUPSD_LOG_DEBUG2, "POST %s", con->uri);
1556 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1557 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1558
1559 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1560 MaxRequestSize > 0 &&
1561 con->http.data_remaining > MaxRequestSize)
1562 {
1563 /*
1564 * Request too large...
1565 */
1566
1567 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1568 return (cupsdCloseClient(con));
1569
1570 break;
1571 }
1572 else if (con->http.data_remaining < 0)
1573 {
1574 /*
1575 * Negative content lengths are invalid!
1576 */
1577
1578 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1579 return (cupsdCloseClient(con));
1580
1581 break;
1582 }
1583
1584 /*
1585 * See what kind of POST request this is; for IPP requests the
1586 * content-type field will be "application/ipp"...
1587 */
1588
1589 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1590 "application/ipp"))
1591 con->request = ippNew();
1592 else if ((!strncmp(con->uri, "/admin", 6) &&
1593 strncmp(con->uri, "/admin/conf/", 12) &&
1594 strncmp(con->uri, "/admin/log/", 11)) ||
1595 !strncmp(con->uri, "/printers", 9) ||
1596 !strncmp(con->uri, "/classes", 8) ||
1597 !strncmp(con->uri, "/help", 5) ||
1598 !strncmp(con->uri, "/jobs", 5))
1599 {
1600 /*
1601 * CGI request...
1602 */
1603
1604 if (!strncmp(con->uri, "/admin", 6))
1605 {
1606 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1607 ServerBin);
1608
1609 if ((ptr = strchr(con->uri + 6, '?')) != NULL)
1610 cupsdSetStringf(&con->options, "admin%s", ptr);
1611 else
1612 cupsdSetString(&con->options, "admin");
1613 }
1614 else if (!strncmp(con->uri, "/printers", 9))
1615 {
1616 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1617 ServerBin);
1618 cupsdSetString(&con->options, con->uri + 9);
1619 }
1620 else if (!strncmp(con->uri, "/classes", 8))
1621 {
1622 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1623 ServerBin);
1624 cupsdSetString(&con->options, con->uri + 8);
1625 }
1626 else if (!strncmp(con->uri, "/jobs", 5))
1627 {
1628 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1629 ServerBin);
1630 cupsdSetString(&con->options, con->uri + 5);
1631 }
1632 else
1633 {
1634 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1635 ServerBin);
1636 cupsdSetString(&con->options, con->uri + 5);
1637 }
1638
1639 if (con->options[0] == '/')
1640 _cups_strcpy(con->options, con->options + 1);
1641
1642 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1643 "cupsdReadClient: %d command=\"%s\", options = \"%s\"",
1644 con->http.fd, con->command, con->options);
1645
1646 if (con->http.version <= HTTP_1_0)
1647 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1648 }
1649 else
1650 {
1651 /*
1652 * POST to a file...
1653 */
1654
1655 if ((filename = get_file(con, &filestats, buf,
1656 sizeof(buf))) == NULL)
1657 {
1658 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1659 return (cupsdCloseClient(con));
1660
1661 break;
1662 }
1663
1664 type = mimeFileType(MimeDatabase, filename, NULL);
1665
1666 if (!cupsdIsCGI(con, filename, &filestats, type))
1667 {
1668 /*
1669 * Only POST to CGI's...
1670 */
1671
1672 if (!cupsdSendError(con, HTTP_UNAUTHORIZED))
1673 return (cupsdCloseClient(con));
1674 }
1675 }
1676 break;
1677
1678 case HTTP_PUT_RECV :
1679 /*
1680 * Validate the resource name...
1681 */
1682
1683 if (strncmp(con->uri, "/admin/conf/", 12) ||
1684 strchr(con->uri + 12, '/') ||
1685 strlen(con->uri) == 12)
1686 {
1687 /*
1688 * PUT can only be done to configuration files under
1689 * /admin/conf...
1690 */
1691
1692 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1693 return (cupsdCloseClient(con));
1694
1695 break;
1696 }
1697
1698 /*
1699 * See if the PUT request includes a Content-Length field, and if
1700 * so check the length against any limits that are set...
1701 */
1702
1703 cupsdLogMessage(CUPSD_LOG_DEBUG2, "PUT %s", con->uri);
1704 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1705 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1706
1707 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1708 MaxRequestSize > 0 &&
1709 con->http.data_remaining > MaxRequestSize)
1710 {
1711 /*
1712 * Request too large...
1713 */
1714
1715 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1716 return (cupsdCloseClient(con));
1717
1718 break;
1719 }
1720 else if (con->http.data_remaining < 0)
1721 {
1722 /*
1723 * Negative content lengths are invalid!
1724 */
1725
1726 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1727 return (cupsdCloseClient(con));
1728
1729 break;
1730 }
1731
1732 /*
1733 * Open a temporary file to hold the request...
1734 */
1735
1736 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1737 request_id ++);
1738 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1739
1740 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1741 "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1742 con->filename, con->file);
1743
1744 if (con->file < 0)
1745 {
1746 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1747 return (cupsdCloseClient(con));
1748 }
1749
1750 fchmod(con->file, 0640);
1751 fchown(con->file, RunUser, Group);
1752 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1753 break;
1754
1755 case HTTP_DELETE :
1756 case HTTP_TRACE :
1757 cupsdSendError(con, HTTP_NOT_IMPLEMENTED);
1758 return (cupsdCloseClient(con));
1759
1760 case HTTP_HEAD :
1761 if (!strncmp(con->uri, "/printers/", 10) &&
1762 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1763 {
1764 /*
1765 * Send PPD file - get the real printer name since printer
1766 * names are not case sensitive but filenames can be...
1767 */
1768
1769 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1770
1771 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1772 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1773 else
1774 {
1775 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1776 return (cupsdCloseClient(con));
1777
1778 break;
1779 }
1780 }
1781
1782 if ((!strncmp(con->uri, "/admin", 6) &&
1783 strncmp(con->uri, "/admin/conf/", 12) &&
1784 strncmp(con->uri, "/admin/log/", 11)) ||
1785 !strncmp(con->uri, "/printers", 9) ||
1786 !strncmp(con->uri, "/classes", 8) ||
1787 !strncmp(con->uri, "/help", 5) ||
1788 !strncmp(con->uri, "/jobs", 5))
1789 {
1790 /*
1791 * CGI output...
1792 */
1793
1794 if (!cupsdSendHeader(con, HTTP_OK, "text/html"))
1795 return (cupsdCloseClient(con));
1796
1797 if (httpPrintf(HTTP(con), "\r\n") < 0)
1798 return (cupsdCloseClient(con));
1799
1800 cupsdLogRequest(con, HTTP_OK);
1801 }
1802 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1803 (strchr(con->uri + 12, '/') ||
1804 strlen(con->uri) == 12)) ||
1805 (!strncmp(con->uri, "/admin/log/", 11) &&
1806 (strchr(con->uri + 11, '/') ||
1807 strlen(con->uri) == 11)))
1808 {
1809 /*
1810 * HEAD can only be done to configuration files under
1811 * /admin/conf...
1812 */
1813
1814 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1815 return (cupsdCloseClient(con));
1816
1817 break;
1818 }
1819 else if ((filename = get_file(con, &filestats, buf,
1820 sizeof(buf))) == NULL)
1821 {
1822 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html"))
1823 return (cupsdCloseClient(con));
1824
1825 cupsdLogRequest(con, HTTP_NOT_FOUND);
1826 }
1827 else if (!check_if_modified(con, &filestats))
1828 {
1829 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1830 return (cupsdCloseClient(con));
1831
1832 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
1833 }
1834 else
1835 {
1836 /*
1837 * Serve a file...
1838 */
1839
1840 type = mimeFileType(MimeDatabase, filename, NULL);
1841 if (type == NULL)
1842 strcpy(line, "text/plain");
1843 else
1844 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1845
1846 if (!cupsdSendHeader(con, HTTP_OK, line))
1847 return (cupsdCloseClient(con));
1848
1849 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
1850 httpGetDateString(filestats.st_mtime)) < 0)
1851 return (cupsdCloseClient(con));
1852
1853 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
1854 (unsigned long)filestats.st_size) < 0)
1855 return (cupsdCloseClient(con));
1856
1857 cupsdLogRequest(con, HTTP_OK);
1858 }
1859
1860 if (httpPrintf(HTTP(con), "\r\n") < 0)
1861 return (cupsdCloseClient(con));
1862
1863 con->http.state = HTTP_WAITING;
1864 break;
1865
1866 default :
1867 break; /* Anti-compiler-warning-code */
1868 }
1869 }
1870 }
1871
1872 /*
1873 * Handle any incoming data...
1874 */
1875
1876 switch (con->http.state)
1877 {
1878 case HTTP_PUT_RECV :
1879 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1880 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_%s, "
1881 "con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1882 con->http.fd,
1883 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1884 "CHUNKED" : "LENGTH",
1885 CUPS_LLCAST con->http.data_remaining, con->file);
1886
a4d04587 1887 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
ef416fc2 1888 return (cupsdCloseClient(con));
1889 else if (bytes > 0)
1890 {
1891 con->bytes += bytes;
1892
1893 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1894 "cupsdReadClient: %d writing %d bytes to %d",
1895 con->http.fd, bytes, con->file);
1896
1897 if (write(con->file, line, bytes) < bytes)
1898 {
1899 cupsdLogMessage(CUPSD_LOG_ERROR,
1900 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1901 bytes, con->filename, strerror(errno));
1902
1903 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1904 "cupsdReadClient: Closing data file %d...",
1905 con->file);
1906
1907 close(con->file);
1908 con->file = -1;
1909 unlink(con->filename);
1910 cupsdClearString(&con->filename);
1911
1912 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1913 return (cupsdCloseClient(con));
1914 }
1915 }
1916
1917 if (con->http.state == HTTP_WAITING)
1918 {
1919 /*
1920 * End of file, see how big it is...
1921 */
1922
1923 fstat(con->file, &filestats);
1924
1925 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1926 "cupsdReadClient: %d Closing data file %d, size="
1927 CUPS_LLFMT ".",
1928 con->http.fd, con->file,
1929 CUPS_LLCAST filestats.st_size);
1930
1931 close(con->file);
1932 con->file = -1;
1933
1934 if (filestats.st_size > MaxRequestSize &&
1935 MaxRequestSize > 0)
1936 {
1937 /*
1938 * Request is too big; remove it and send an error...
1939 */
1940
1941 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1942 "cupsdReadClient: %d Removing temp file %s",
1943 con->http.fd, con->filename);
1944 unlink(con->filename);
1945 cupsdClearString(&con->filename);
1946
1947 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1948 return (cupsdCloseClient(con));
1949 }
1950
1951 /*
1952 * Install the configuration file...
1953 */
1954
1955 status = install_conf_file(con);
1956
1957 /*
1958 * Return the status to the client...
1959 */
1960
1961 if (!cupsdSendError(con, status))
1962 return (cupsdCloseClient(con));
1963 }
1964 break;
1965
1966 case HTTP_POST_RECV :
1967 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1968 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_"
1969 "%s, con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1970 con->http.fd,
1971 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1972 "CHUNKED" : "LENGTH",
1973 CUPS_LLCAST con->http.data_remaining, con->file);
1974
1975 if (con->request != NULL)
1976 {
1977 /*
1978 * Grab any request data from the connection...
1979 */
1980
1981 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
1982 {
1983 cupsdLogMessage(CUPSD_LOG_ERROR,
1984 "cupsdReadClient: %d IPP Read Error!",
1985 con->http.fd);
1986
1987 cupsdSendError(con, HTTP_BAD_REQUEST);
1988 return (cupsdCloseClient(con));
1989 }
1990 else if (ipp_state != IPP_DATA)
1991 {
1992 if (con->http.state == HTTP_POST_SEND)
1993 {
1994 cupsdSendError(con, HTTP_BAD_REQUEST);
1995 return (cupsdCloseClient(con));
1996 }
1997
1998 break;
1999 }
2000 else
2001 con->bytes += ippLength(con->request);
2002 }
2003
2004 if (con->file < 0 && con->http.state != HTTP_POST_SEND)
2005 {
2006 /*
2007 * Create a file as needed for the request data...
2008 */
2009
2010 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
2011 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
2012
2013 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
2014 con->filename, con->file);
2015
2016 if (con->file < 0)
2017 {
2018 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
2019 return (cupsdCloseClient(con));
2020 }
2021
2022 fchmod(con->file, 0640);
2023 fchown(con->file, RunUser, Group);
2024 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2025 }
2026
2027 if (con->http.state != HTTP_POST_SEND)
2028 {
a4d04587 2029 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
ef416fc2 2030 return (cupsdCloseClient(con));
2031 else if (bytes > 0)
2032 {
2033 con->bytes += bytes;
2034
2035 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2036 "cupsdReadClient: %d writing %d bytes to %d",
2037 con->http.fd, bytes, con->file);
2038
2039 if (write(con->file, line, bytes) < bytes)
2040 {
2041 cupsdLogMessage(CUPSD_LOG_ERROR,
2042 "cupsdReadClient: Unable to write %d bytes to %s: %s",
2043 bytes, con->filename, strerror(errno));
2044
2045 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2046 "cupsdReadClient: Closing file %d...",
2047 con->file);
2048
2049 close(con->file);
2050 con->file = -1;
2051 unlink(con->filename);
2052 cupsdClearString(&con->filename);
2053
2054 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
2055 return (cupsdCloseClient(con));
2056 }
2057 }
2058 else if (con->http.state == HTTP_POST_RECV)
2059 return (1); /* ??? */
2060 else if (con->http.state != HTTP_POST_SEND)
2061 return (cupsdCloseClient(con));
2062 }
2063
2064 if (con->http.state == HTTP_POST_SEND)
2065 {
2066 if (con->file >= 0)
2067 {
2068 fstat(con->file, &filestats);
2069
2070 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2071 "cupsdReadClient: %d Closing data file %d, "
2072 "size=" CUPS_LLFMT ".",
2073 con->http.fd, con->file,
2074 CUPS_LLCAST filestats.st_size);
2075
2076 close(con->file);
2077 con->file = -1;
2078
2079 if (filestats.st_size > MaxRequestSize &&
2080 MaxRequestSize > 0)
2081 {
2082 /*
2083 * Request is too big; remove it and send an error...
2084 */
2085
2086 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2087 "cupsdReadClient: %d Removing temp file %s",
2088 con->http.fd, con->filename);
2089 unlink(con->filename);
2090 cupsdClearString(&con->filename);
2091
2092 if (con->request)
2093 {
2094 /*
2095 * Delete any IPP request data...
2096 */
2097
2098 ippDelete(con->request);
2099 con->request = NULL;
2100 }
2101
2102 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
2103 return (cupsdCloseClient(con));
2104 }
2105
2106 if (con->command)
2107 {
2108 if (!cupsdSendCommand(con, con->command, con->options, 0))
2109 {
2110 if (!cupsdSendError(con, HTTP_NOT_FOUND))
2111 return (cupsdCloseClient(con));
2112 }
2113 else
2114 cupsdLogRequest(con, HTTP_OK);
2115 }
2116 }
2117
2118 if (con->request)
2119 return (cupsdProcessIPPRequest(con));
2120 }
2121 break;
2122
2123 default :
2124 break; /* Anti-compiler-warning-code */
2125 }
2126
2127 if (!con->http.keep_alive && con->http.state == HTTP_WAITING)
2128 return (cupsdCloseClient(con));
2129 else
2130 return (1);
2131}
2132
2133
2134/*
2135 * 'cupsdSendCommand()' - Send output from a command via HTTP.
2136 */
2137
2138int /* O - 1 on success, 0 on failure */
2139cupsdSendCommand(
2140 cupsd_client_t *con, /* I - Client connection */
2141 char *command, /* I - Command to run */
2142 char *options, /* I - Command-line options */
2143 int root) /* I - Run as root? */
2144{
2145 int fd; /* Standard input file descriptor */
2146
2147
2148 if (con->filename)
2149 fd = open(con->filename, O_RDONLY);
2150 else
2151 fd = open("/dev/null", O_RDONLY);
2152
2153 if (fd < 0)
2154 {
2155 cupsdLogMessage(CUPSD_LOG_ERROR,
2156 "cupsdSendCommand: %d Unable to open \"%s\" for reading: %s",
2157 con->http.fd, con->filename ? con->filename : "/dev/null",
2158 strerror(errno));
2159 return (0);
2160 }
2161
2162 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
2163
2164 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
2165
2166 close(fd);
2167
2168 cupsdLogMessage(CUPSD_LOG_INFO, "Started \"%s\" (pid=%d)", command,
2169 con->pipe_pid);
2170
2171 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendCommand: %d file=%d",
2172 con->http.fd, con->file);
2173
2174 if (con->pipe_pid == 0)
2175 return (0);
2176
2177 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2178
2179 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2180 "cupsdSendCommand: Adding fd %d to InputSet...", con->file);
2181 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2182 "cupsdSendCommand: Adding fd %d to OutputSet...",
2183 con->http.fd);
2184
2185 FD_SET(con->file, InputSet);
2186 FD_SET(con->http.fd, OutputSet);
2187
2188 con->sent_header = 0;
2189 con->file_ready = 0;
2190 con->got_fields = 0;
2191 con->field_col = 0;
2192
2193 return (1);
2194}
2195
2196
2197/*
2198 * 'cupsdSendError()' - Send an error message via HTTP.
2199 */
2200
2201int /* O - 1 if successful, 0 otherwise */
2202cupsdSendError(cupsd_client_t *con, /* I - Connection */
2203 http_status_t code) /* I - Error code */
2204{
2205 /*
2206 * Put the request in the access_log file...
2207 */
2208
2209 cupsdLogRequest(con, code);
2210
2211 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendError: %d code=%d (%s)",
2212 con->http.fd, code, httpStatus(code));
2213
2214 /*
2215 * To work around bugs in some proxies, don't use Keep-Alive for some
2216 * error messages...
2217 */
2218
2219 if (code >= HTTP_BAD_REQUEST)
2220 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
2221
2222 /*
2223 * Send an error message back to the client. If the error code is a
2224 * 400 or 500 series, make sure the message contains some text, too!
2225 */
2226
2227 if (!cupsdSendHeader(con, code, NULL))
2228 return (0);
2229
2230#ifdef HAVE_SSL
2231 if (code == HTTP_UPGRADE_REQUIRED)
2232 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
2233 return (0);
2234
2235 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n") < 0)
2236 return (0);
2237#endif /* HAVE_SSL */
2238
2239 if ((con->http.version >= HTTP_1_1 && !con->http.keep_alive) ||
2240 (code >= HTTP_BAD_REQUEST && code != HTTP_UPGRADE_REQUIRED))
2241 {
2242 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
2243 return (0);
2244 }
2245
2246 if (code >= HTTP_BAD_REQUEST)
2247 {
2248 /*
2249 * Send a human-readable error message.
2250 */
2251
2252 char message[1024]; /* Message for user */
2253 const char *text; /* Status-specific text */
2254
2255 if (code == HTTP_UNAUTHORIZED)
2256 text = _cupsLangString(con->language,
2257 _("Enter your username and password or the "
2258 "root username and password to access this "
2259 "page."));
2260 else if (code == HTTP_UPGRADE_REQUIRED)
2261 text = _cupsLangString(con->language,
2262 _("You must use a https: URL to access this "
2263 "page."));
2264 else
2265 text = "";
2266
2267 snprintf(message, sizeof(message),
2268 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" "
2269 "\"http://www.w3.org/TR/REC-html40/loose.dtd\">\n"
2270 "<HTML>\n"
2271 "<HEAD>\n"
2272 "\t<META HTTP-EQUIV=\"Content-Type\" "
2273 "CONTENT=\"text/html; charset=utf-8\">\n"
2274 "\t<TITLE>%d %s</TITLE>\n"
2275 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2276 "HREF=\"/cups.css\">\n"
2277 "</HEAD>\n"
2278 "<BODY>\n"
2279 "<H1>%d %s</H1>\n"
2280 "<P>%s</P>\n"
2281 "</BODY>\n"
2282 "</HTML>\n",
2283 code, httpStatus(code), code, httpStatus(code), text);
2284
2285 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2286 return (0);
2287 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2288 (int)strlen(message)) < 0)
2289 return (0);
2290 if (httpPrintf(HTTP(con), "\r\n") < 0)
2291 return (0);
2292 if (httpPrintf(HTTP(con), "%s", message) < 0)
2293 return (0);
2294 }
2295 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2296 return (0);
2297
2298 con->http.state = HTTP_WAITING;
2299
2300 return (1);
2301}
2302
2303
2304/*
2305 * 'cupsdSendFile()' - Send a file via HTTP.
2306 */
2307
2308int /* O - 0 on failure, 1 on success */
2309cupsdSendFile(cupsd_client_t *con, /* I - Client connection */
2310 http_status_t code, /* I - HTTP status */
2311 char *filename, /* I - Filename */
2312 char *type, /* I - File type */
2313 struct stat *filestats)/* O - File information */
2314{
2315 con->file = open(filename, O_RDONLY);
2316
2317 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendFile: %d file=%d", con->http.fd,
2318 con->file);
2319
2320 if (con->file < 0)
2321 return (0);
2322
2323 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2324
2325 con->pipe_pid = 0;
2326
2327 if (!cupsdSendHeader(con, code, type))
2328 return (0);
2329
2330 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
2331 httpGetDateString(filestats->st_mtime)) < 0)
2332 return (0);
2333 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
2334 CUPS_LLCAST filestats->st_size) < 0)
2335 return (0);
2336 if (httpPrintf(HTTP(con), "\r\n") < 0)
2337 return (0);
2338
2339 con->http.data_encoding = HTTP_ENCODE_LENGTH;
2340 con->http.data_remaining = filestats->st_size;
2341
2342 if (con->http.data_remaining <= INT_MAX)
2343 con->http._data_remaining = con->http.data_remaining;
2344 else
2345 con->http._data_remaining = INT_MAX;
2346
2347 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2348 "cupsdSendFile: Adding fd %d to OutputSet...", con->http.fd);
2349
2350 FD_SET(con->http.fd, OutputSet);
2351
2352 return (1);
2353}
2354
2355
2356/*
2357 * 'cupsdSendHeader()' - Send an HTTP request.
2358 */
2359
2360int /* O - 1 on success, 0 on failure */
2361cupsdSendHeader(cupsd_client_t *con, /* I - Client to send to */
2362 http_status_t code, /* I - HTTP status code */
2363 char *type) /* I - MIME type of document */
2364{
2365 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2366 con->http.version % 100, code, httpStatus(code)) < 0)
2367 return (0);
2368 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2369 return (0);
2370 if (ServerHeader)
2371 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2372 return (0);
2373 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2374 {
2375 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2376 return (0);
2377 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2378 KeepAliveTimeout) < 0)
2379 return (0);
2380 }
2381 if (code == HTTP_METHOD_NOT_ALLOWED)
2382 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST\r\n") < 0)
2383 return (0);
2384
2385 if (code == HTTP_UNAUTHORIZED)
2386 {
2387 int auth_type; /* Authentication type */
2388
2389
2390 if (!con->best || con->best->type == AUTH_NONE)
2391 auth_type = DefaultAuthType;
2392 else
2393 auth_type = con->best->type;
2394
2395 if (auth_type != AUTH_DIGEST)
2396 {
2397 if (httpPrintf(HTTP(con),
2398 "WWW-Authenticate: Basic realm=\"CUPS\"\r\n") < 0)
2399 return (0);
2400 }
2401 else
2402 {
2403 if (httpPrintf(HTTP(con),
2404 "WWW-Authenticate: Digest realm=\"CUPS\", nonce=\"%s\"\r\n",
2405 con->http.hostname) < 0)
2406 return (0);
2407 }
2408 }
2409
2410 if (con->language != NULL)
2411 {
2412 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2413 con->language->language) < 0)
2414 return (0);
2415 }
2416
2417 if (type != NULL)
2418 {
2419 if (!strcmp(type, "text/html"))
2420 {
2421 if (httpPrintf(HTTP(con),
2422 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2423 return (0);
2424 }
2425 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2426 return (0);
2427 }
2428
2429 return (1);
2430}
2431
2432
2433/*
2434 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2435 */
2436
2437void
2438cupsdUpdateCGI(void)
2439{
2440 char *ptr, /* Pointer to end of line in buffer */
2441 message[1024]; /* Pointer to message text */
2442 int loglevel; /* Log level for message */
2443
2444
2445 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2446 message, sizeof(message))) != NULL)
2447 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2448 break;
2449
2450 if (ptr == NULL && errno)
2451 {
2452 /*
2453 * Fatal error on pipe - should never happen!
2454 */
2455
2456 cupsdLogMessage(CUPSD_LOG_CRIT,
2457 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2458 strerror(errno));
2459 }
2460}
2461
2462
2463/*
2464 * 'cupsdWriteClient()' - Write data to a client as needed.
2465 */
2466
2467int /* O - 1 if success, 0 if fail */
2468cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2469{
2470 int bytes; /* Number of bytes written */
2471 char buf[16385]; /* Data buffer */
2472 char *bufptr; /* Pointer into buffer */
2473 ipp_state_t ipp_state; /* IPP state value */
2474
2475
2476#ifdef DEBUG
2477 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2478 "cupsdWriteClient(con=%p) %d response=%p, file=%d "
2479 "pipe_pid=%d state=%d",
2480 con, con->http.fd, con->response, con->file, con->pipe_pid,
2481 con->http.state);
2482#endif /* DEBUG */
2483
2484 if (con->http.state != HTTP_GET_SEND &&
2485 con->http.state != HTTP_POST_SEND)
2486 return (1);
2487
2488 if (con->response != NULL)
2489 {
2490 ipp_state = ippWrite(&(con->http), con->response);
2491 bytes = ipp_state != IPP_ERROR && ipp_state != IPP_DATA;
2492 }
2493 else if ((bytes = read(con->file, buf, sizeof(buf) - 1)) > 0)
2494 {
2495 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2496 "cupsdWriteClient: Read %d bytes from file %d...",
2497 bytes, con->file);
2498
2499 if (con->pipe_pid && !con->got_fields)
2500 {
2501 /*
2502 * Inspect the data for Content-Type and other fields.
2503 */
2504
2505 buf[bytes] = '\0';
2506
2507 for (bufptr = buf; !con->got_fields && *bufptr; bufptr ++)
2508 if (*bufptr == '\n')
2509 {
2510 /*
2511 * Send line to client...
2512 */
2513
2514 if (bufptr > buf && bufptr[-1] == '\r')
2515 bufptr[-1] = '\0';
2516 *bufptr++ = '\0';
2517
2518 cupsdLogMessage(CUPSD_LOG_DEBUG2, "Script header: %s", buf);
2519
2520 if (!con->sent_header)
2521 {
2522 /*
2523 * Handle redirection and CGI status codes...
2524 */
2525
2526 if (!strncasecmp(buf, "Location:", 9))
2527 cupsdSendHeader(con, HTTP_SEE_OTHER, NULL);
2528 else if (!strncasecmp(buf, "Status:", 7))
2529 cupsdSendHeader(con, atoi(buf + 7), NULL);
2530 else
2531 cupsdSendHeader(con, HTTP_OK, NULL);
2532
2533 if (con->http.version == HTTP_1_1)
2534 {
2535 con->http.data_encoding = HTTP_ENCODE_CHUNKED;
2536
2537 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
2538 return (0);
2539 }
2540
2541 con->sent_header = 1;
2542 }
2543
2544 if (strncasecmp(buf, "Status:", 7))
2545 httpPrintf(HTTP(con), "%s\r\n", buf);
2546
2547 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d %s",
2548 con->http.fd, buf);
2549
2550 /*
2551 * Update buffer...
2552 */
2553
2554 bytes -= (bufptr - buf);
2555 memmove(buf, bufptr, bytes + 1);
2556 bufptr = buf - 1;
2557
2558 /*
2559 * See if the line was empty...
2560 */
2561
2562 if (con->field_col == 0)
2563 con->got_fields = 1;
2564 else
2565 con->field_col = 0;
2566 }
2567 else if (*bufptr != '\r')
2568 con->field_col ++;
2569
2570 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2571 "cupsdWriteClient: %d bytes=%d, got_fields=%d",
2572 con->http.fd, bytes, con->got_fields);
2573
2574 if (bytes > 0 && !con->got_fields)
2575 {
2576 /*
2577 * Remaining text needs to go out...
2578 */
2579
2580 httpPrintf(HTTP(con), "%s", buf);
2581
2582 con->http.activity = time(NULL);
2583 return (1);
2584 }
2585 else if (bytes == 0)
2586 {
2587 con->http.activity = time(NULL);
2588 return (1);
2589 }
2590 }
2591
a4d04587 2592 if (httpWrite2(HTTP(con), buf, bytes) < 0)
ef416fc2 2593 {
2594 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2595 "cupsdWriteClient: %d Write of %d bytes failed!",
2596 con->http.fd, bytes);
2597
2598 cupsdCloseClient(con);
2599 return (0);
2600 }
2601
2602 con->bytes += bytes;
2603
2604 if (con->http.state == HTTP_WAITING)
2605 bytes = 0;
2606 }
2607
2608 if (bytes <= 0)
2609 {
2610 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d bytes < 0",
2611 con->http.fd);
2612
2613 cupsdLogRequest(con, HTTP_OK);
2614
2615 httpFlushWrite(HTTP(con));
2616
2617 if (con->http.data_encoding == HTTP_ENCODE_CHUNKED)
2618 {
2619 if (httpPrintf(HTTP(con), "0\r\n\r\n") < 0)
2620 {
2621 cupsdCloseClient(con);
2622 return (0);
2623 }
2624 }
2625
2626 con->http.state = HTTP_WAITING;
2627
2628 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2629 "cupsdWriteClient: Removing fd %d from OutputSet...",
2630 con->http.fd);
2631
2632 FD_CLR(con->http.fd, OutputSet);
2633
2634 if (con->file >= 0)
2635 {
2636 if (FD_ISSET(con->file, InputSet))
2637 {
2638 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2639 "cupsdWriteClient: Removing fd %d from InputSet...",
2640 con->file);
2641 FD_CLR(con->file, InputSet);
2642 }
2643
2644 if (con->pipe_pid)
2645 cupsdEndProcess(con->pipe_pid, 0);
2646
2647 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2648 "cupsdWriteClient: %d Closing data file %d.",
2649 con->http.fd, con->file);
2650
2651 close(con->file);
2652 con->file = -1;
2653 con->pipe_pid = 0;
2654 }
2655
2656 if (con->filename)
2657 {
2658 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2659 "cupsdWriteClient: %d Removing temp file %s",
2660 con->http.fd, con->filename);
2661 unlink(con->filename);
2662 cupsdClearString(&con->filename);
2663 }
2664
2665 if (con->request != NULL)
2666 {
2667 ippDelete(con->request);
2668 con->request = NULL;
2669 }
2670
2671 if (con->response != NULL)
2672 {
2673 ippDelete(con->response);
2674 con->response = NULL;
2675 }
2676
2677 cupsdClearString(&con->command);
2678 cupsdClearString(&con->options);
2679
2680 if (!con->http.keep_alive)
2681 {
2682 cupsdCloseClient(con);
2683 return (0);
2684 }
2685 }
2686 else
2687 {
2688 con->file_ready = 0;
2689
2690 if (con->pipe_pid && !FD_ISSET(con->file, InputSet))
2691 {
2692 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2693 "cupsdWriteClient: Adding fd %d to InputSet...",
2694 con->file);
2695 FD_SET(con->file, InputSet);
2696 }
2697 }
2698
2699 con->http.activity = time(NULL);
2700
2701 return (1);
2702}
2703
2704
2705/*
2706 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2707 */
2708
2709static int /* O - 1 if modified since */
2710check_if_modified(
2711 cupsd_client_t *con, /* I - Client connection */
2712 struct stat *filestats) /* I - File information */
2713{
2714 char *ptr; /* Pointer into field */
2715 time_t date; /* Time/date value */
2716 off_t size; /* Size/length value */
2717
2718
2719 size = 0;
2720 date = 0;
2721 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
2722
2723 if (*ptr == '\0')
2724 return (1);
2725
2726 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2727 "check_if_modified: %d If-Modified-Since=\"%s\"",
2728 con->http.fd, ptr);
2729
2730 while (*ptr != '\0')
2731 {
2732 while (isspace(*ptr) || *ptr == ';')
2733 ptr ++;
2734
2735 if (strncasecmp(ptr, "length=", 7) == 0)
2736 {
2737 ptr += 7;
2738 size = strtoll(ptr, NULL, 10);
2739
2740 while (isdigit(*ptr))
2741 ptr ++;
2742 }
2743 else if (isalpha(*ptr))
2744 {
2745 date = httpGetDateTime(ptr);
2746 while (*ptr != '\0' && *ptr != ';')
2747 ptr ++;
2748 }
2749 }
2750
2751 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2752 "check_if_modified: %d sizes=" CUPS_LLFMT ","
2753 CUPS_LLFMT " dates=%d,%d",
2754 con->http.fd, CUPS_LLCAST size,
2755 CUPS_LLCAST filestats->st_size, (int)date,
2756 (int)filestats->st_mtime);
2757
2758 return ((size != filestats->st_size && size != 0) ||
2759 (date < filestats->st_mtime && date != 0) ||
2760 (size == 0 && date == 0));
2761}
2762
2763
2764#ifdef HAVE_CDSASSL
2765/*
2766 * 'get_cdsa_server_certs()' - Convert a keychain name into the CFArrayRef
2767 * required by SSLSetCertificate.
2768 *
2769 * For now we assumes that there is exactly one SecIdentity in the
2770 * keychain - i.e. there is exactly one matching cert/private key pair.
2771 * In the future we will search a keychain for a SecIdentity matching a
2772 * specific criteria. We also skip the operation of adding additional
2773 * non-signing certs from the keychain to the CFArrayRef.
2774 *
2775 * To create a self-signed certificate for testing use the certtool.
2776 * Executing the following as root will do it:
2777 *
2778 * certtool c c v k=CUPS
2779 */
2780
2781static CFArrayRef /* O - Array of certificates */
2782get_cdsa_server_certs(void)
2783{
2784 OSStatus err; /* Error info */
2785 SecKeychainRef kcRef; /* Keychain reference */
2786 SecIdentitySearchRef srchRef; /* Search reference */
2787 SecIdentityRef identity; /* Identity */
2788 CFArrayRef ca; /* Certificate array */
2789
2790
2791 kcRef = NULL;
2792 srchRef = NULL;
2793 identity = NULL;
2794 ca = NULL;
2795 err = SecKeychainOpen(ServerCertificate, &kcRef);
2796
2797 if (err)
2798 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot open keychain \"%s\", error %d.",
2799 ServerCertificate, (int)err);
2800 else
2801 {
2802 /*
2803 * Search for "any" identity matching specified key use;
2804 * in this app, we expect there to be exactly one.
2805 */
2806
2807 err = SecIdentitySearchCreate(kcRef, CSSM_KEYUSE_SIGN, &srchRef);
2808
2809 if (err)
2810 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2811 "Cannot find signing key in keychain \"%s\", error %d",
2812 ServerCertificate, (int)err);
2813 else
2814 {
2815 err = SecIdentitySearchCopyNext(srchRef, &identity);
2816
2817 if (err)
2818 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2819 "Cannot find signing key in keychain \"%s\", error %d",
2820 ServerCertificate, (int)err);
2821 else
2822 {
2823 if (CFGetTypeID(identity) != SecIdentityGetTypeID())
2824 cupsdLogMessage(CUPSD_LOG_ERROR,
2825 "SecIdentitySearchCopyNext CFTypeID failure!");
2826 else
2827 {
2828 /*
2829 * Found one. Place it in a CFArray.
2830 * TBD: snag other (non-identity) certs from keychain and add them
2831 * to array as well.
2832 */
2833
2834 ca = CFArrayCreate(NULL, (const void **)&identity, 1, NULL);
2835
2836 if (ca == nil)
2837 cupsdLogMessage(CUPSD_LOG_ERROR, "CFArrayCreate error");
2838 }
2839
2840 /*CFRelease(identity);*/
2841 }
2842
2843 /*CFRelease(srchRef);*/
2844 }
2845
2846 /*CFRelease(kcRef);*/
2847 }
2848
2849 return (ca);
2850}
2851#endif /* HAVE_CDSASSL */
2852
2853
2854/*
2855 * 'get_file()' - Get a filename and state info.
2856 */
2857
2858static char * /* O - Real filename */
2859get_file(cupsd_client_t *con, /* I - Client connection */
2860 struct stat *filestats, /* O - File information */
2861 char *filename, /* IO - Filename buffer */
2862 int len) /* I - Buffer length */
2863{
2864 int status; /* Status of filesystem calls */
2865 char *ptr; /* Pointer info filename */
2866 int plen; /* Remaining length after pointer */
2867
2868
2869 /*
2870 * Need to add DocumentRoot global...
2871 */
2872
2873 if (!strncmp(con->uri, "/ppd/", 5))
2874 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
2875 else if (!strncmp(con->uri, "/admin/conf/", 12))
2876 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
2877 else if (!strncmp(con->uri, "/admin/log/", 11))
2878 {
2879 if (!strcmp(con->uri + 11, "access_log") && AccessLog[0] == '/')
2880 strlcpy(filename, AccessLog, len);
2881 else if (!strcmp(con->uri + 11, "error_log") && ErrorLog[0] == '/')
2882 strlcpy(filename, ErrorLog, len);
2883 else if (!strcmp(con->uri + 11, "page_log") && PageLog[0] == '/')
2884 strlcpy(filename, PageLog, len);
2885 else
2886 return (NULL);
2887 }
2888 else if (con->language != NULL)
2889 snprintf(filename, len, "%s/%s%s", DocumentRoot, con->language->language,
2890 con->uri);
2891 else
2892 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2893
2894 if ((ptr = strchr(filename, '?')) != NULL)
2895 *ptr = '\0';
2896
2897 /*
2898 * Grab the status for this language; if there isn't a language-specific file
2899 * then fallback to the default one...
2900 */
2901
2902 if ((status = stat(filename, filestats)) != 0 && con->language != NULL)
2903 {
2904 /*
2905 * Drop the language prefix and try the current directory...
2906 */
2907
2908 if (strncmp(con->uri, "/ppd/", 5) &&
2909 strncmp(con->uri, "/admin/conf/", 12) &&
2910 strncmp(con->uri, "/admin/log/", 11))
2911 {
2912 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2913
2914 if ((ptr = strchr(filename, '?')) != NULL)
2915 *ptr = '\0';
2916
2917 status = stat(filename, filestats);
2918 }
2919 }
2920
2921 /*
2922 * If we're found a directory, get the index.html file instead...
2923 */
2924
2925 if (!status && S_ISDIR(filestats->st_mode))
2926 {
2927 if (filename[strlen(filename) - 1] != '/')
2928 strlcat(filename, "/", len);
2929
2930 ptr = filename + strlen(filename);
2931 plen = len - (ptr - filename);
2932
2933 strlcpy(ptr, "index.html", plen);
2934 status = stat(filename, filestats);
2935
2936#ifdef HAVE_JAVA
2937 if (status)
2938 {
2939 strlcpy(ptr, "index.class", plen);
2940 status = stat(filename, filestats);
2941 }
2942#endif /* HAVE_JAVA */
2943
2944#ifdef HAVE_PERL
2945 if (status)
2946 {
2947 strlcpy(ptr, "index.pl", plen);
2948 status = stat(filename, filestats);
2949 }
2950#endif /* HAVE_PERL */
2951
2952#ifdef HAVE_PHP
2953 if (status)
2954 {
2955 strlcpy(ptr, "index.php", plen);
2956 status = stat(filename, filestats);
2957 }
2958#endif /* HAVE_PHP */
2959
2960#ifdef HAVE_PYTHON
2961 if (status)
2962 {
2963 strlcpy(ptr, "index.pyc", plen);
2964 status = stat(filename, filestats);
2965 }
2966
2967 if (status)
2968 {
2969 strlcpy(ptr, "index.py", plen);
2970 status = stat(filename, filestats);
2971 }
2972#endif /* HAVE_PYTHON */
2973 }
2974
2975 cupsdLogMessage(CUPSD_LOG_DEBUG2, "get_file: %d filename=%s size=%d",
2976 con->http.fd, filename,
2977 status ? -1 : (int)filestats->st_size);
2978
2979 if (!status)
2980 con->http.data_remaining = (int)filestats->st_size;
2981
2982 if (status)
2983 return (NULL);
2984 else
2985 return (filename);
2986}
2987
2988
2989/*
2990 * 'install_conf_file()' - Install a configuration file.
2991 */
2992
2993static http_status_t /* O - Status */
2994install_conf_file(cupsd_client_t *con) /* I - Connection */
2995{
2996 cups_file_t *in, /* Input file */
2997 *out; /* Output file */
2998 char buffer[1024]; /* Copy buffer */
2999 int bytes; /* Number of bytes */
3000 char conffile[1024], /* Configuration filename */
3001 newfile[1024], /* New config filename */
3002 oldfile[1024]; /* Old config filename */
3003 struct stat confinfo; /* Config file info */
3004
3005
3006 /*
3007 * First construct the filenames...
3008 */
3009
3010 snprintf(conffile, sizeof(conffile), "%s%s", ServerRoot, con->uri + 11);
3011 snprintf(newfile, sizeof(newfile), "%s%s.N", ServerRoot, con->uri + 11);
3012 snprintf(oldfile, sizeof(oldfile), "%s%s.O", ServerRoot, con->uri + 11);
3013
3014 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...", conffile);
3015
3016 /*
3017 * Get the owner, group, and permissions of the configuration file.
3018 * If it doesn't exist, assign it to the User and Group in the
3019 * cupsd.conf file with mode 0640 permissions.
3020 */
3021
3022 if (stat(conffile, &confinfo))
3023 {
3024 confinfo.st_uid = User;
3025 confinfo.st_gid = Group;
3026 confinfo.st_mode = ConfigFilePerm;
3027 }
3028
3029 /*
3030 * Open the request file and new config file...
3031 */
3032
3033 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
3034 {
3035 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\" - %s",
3036 con->filename, strerror(errno));
3037 return (HTTP_SERVER_ERROR);
3038 }
3039
3040 if ((out = cupsFileOpen(newfile, "wb")) == NULL)
3041 {
3042 cupsFileClose(in);
3043 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open config file \"%s\" - %s",
3044 newfile, strerror(errno));
3045 return (HTTP_SERVER_ERROR);
3046 }
3047
3048 fchmod(cupsFileNumber(out), confinfo.st_mode);
3049 fchown(cupsFileNumber(out), confinfo.st_uid, confinfo.st_gid);
3050
3051 /*
3052 * Copy from the request to the new config file...
3053 */
3054
3055 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
3056 if (cupsFileWrite(out, buffer, bytes) < bytes)
3057 {
3058 cupsdLogMessage(CUPSD_LOG_ERROR,
3059 "Unable to copy to config file \"%s\" - %s",
3060 newfile, strerror(errno));
3061
3062 cupsFileClose(in);
3063 cupsFileClose(out);
3064 unlink(newfile);
3065
3066 return (HTTP_SERVER_ERROR);
3067 }
3068
3069 /*
3070 * Close the files...
3071 */
3072
3073 cupsFileClose(in);
3074 if (cupsFileClose(out))
3075 {
3076 cupsdLogMessage(CUPSD_LOG_ERROR,
3077 "Error file closing config file \"%s\" - %s",
3078 newfile, strerror(errno));
3079
3080 unlink(newfile);
3081
3082 return (HTTP_SERVER_ERROR);
3083 }
3084
3085 /*
3086 * Remove the request file...
3087 */
3088
3089 unlink(con->filename);
3090 cupsdClearString(&con->filename);
3091
3092 /*
3093 * Unlink the old backup, rename the current config file to the backup
3094 * filename, and rename the new config file to the config file name...
3095 */
3096
3097 if (unlink(oldfile))
3098 if (errno != ENOENT)
3099 {
3100 cupsdLogMessage(CUPSD_LOG_ERROR,
3101 "Unable to remove backup config file \"%s\" - %s",
3102 oldfile, strerror(errno));
3103
3104 unlink(newfile);
3105
3106 return (HTTP_SERVER_ERROR);
3107 }
3108
3109 if (rename(conffile, oldfile))
3110 if (errno != ENOENT)
3111 {
3112 cupsdLogMessage(CUPSD_LOG_ERROR,
3113 "Unable to rename old config file \"%s\" - %s",
3114 conffile, strerror(errno));
3115
3116 unlink(newfile);
3117
3118 return (HTTP_SERVER_ERROR);
3119 }
3120
3121 if (rename(newfile, conffile))
3122 {
3123 cupsdLogMessage(CUPSD_LOG_ERROR,
3124 "Unable to rename new config file \"%s\" - %s",
3125 newfile, strerror(errno));
3126
3127 rename(oldfile, conffile);
3128 unlink(newfile);
3129
3130 return (HTTP_SERVER_ERROR);
3131 }
3132
3133 /*
3134 * If the cupsd.conf file was updated, set the NeedReload flag...
3135 */
3136
3137 if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
3138 NeedReload = RELOAD_CUPSD;
3139 else
3140 NeedReload = RELOAD_ALL;
3141
3142 ReloadTime = time(NULL);
3143
3144 /*
3145 * Return that the file was created successfully...
3146 */
3147
3148 return (HTTP_CREATED);
3149}
3150
3151
3152/*
3153 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3154 */
3155
3156static int /* O - 0 if relative, 1 if absolute */
3157is_path_absolute(const char *path) /* I - Input path */
3158{
3159 /*
3160 * Check for a leading slash...
3161 */
3162
3163 if (path[0] != '/')
3164 return (0);
3165
3166 /*
3167 * Check for "/.." in the path...
3168 */
3169
3170 while ((path = strstr(path, "/..")) != NULL)
3171 {
3172 if (!path[3] || path[3] == '/')
3173 return (0);
3174
3175 path ++;
3176 }
3177
3178 /*
3179 * If we haven't found any relative paths, return 1 indicating an
3180 * absolute path...
3181 */
3182
3183 return (1);
3184}
3185
3186
3187/*
3188 * 'pipe_command()' - Pipe the output of a command to the remote client.
3189 */
3190
3191static int /* O - Process ID */
3192pipe_command(cupsd_client_t *con, /* I - Client connection */
3193 int infile, /* I - Standard input for command */
3194 int *outfile, /* O - Standard output for command */
3195 char *command, /* I - Command to run */
3196 char *options, /* I - Options for command */
3197 int root) /* I - Run as root? */
3198{
3199 int i; /* Looping var */
3200 int pid; /* Process ID */
3201 char *commptr; /* Command string pointer */
3202 char *uriptr; /* URI string pointer */
3203 int fds[2]; /* Pipe FDs */
3204 int argc; /* Number of arguments */
3205 int envc; /* Number of environment variables */
3206 char argbuf[10240], /* Argument buffer */
3207 *argv[100], /* Argument strings */
e00b005a 3208 *envp[MAX_ENV]; /* Environment variables */
ef416fc2 3209 char content_length[1024], /* CONTENT_LENGTH environment variable */
3210 content_type[1024], /* CONTENT_TYPE environment variable */
3211 http_cookie[32768], /* HTTP_COOKIE environment variable */
3212 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3213 lang[1024], /* LANG environment variable */
3214 *query_string, /* QUERY_STRING env variable */
3215 remote_addr[1024], /* REMOTE_ADDR environment variable */
3216 remote_host[1024], /* REMOTE_HOST environment variable */
3217 remote_user[1024], /* REMOTE_USER environment variable */
3218 script_name[1024], /* SCRIPT_NAME environment variable */
3219 server_name[1024], /* SERVER_NAME environment variable */
3220 server_port[1024]; /* SERVER_PORT environment variable */
3221
3222
3223 /*
3224 * Parse a copy of the options string, which is of the form:
3225 *
3226 * name argument+argument+argument
3227 * name?argument+argument+argument
3228 * name param=value&param=value
3229 * name?param=value&param=value
3230 *
3231 * If the string contains an "=" character after the initial name,
3232 * then we treat it as a HTTP GET form request and make a copy of
3233 * the remaining string for the environment variable.
3234 *
3235 * The string is always parsed out as command-line arguments, to
3236 * be consistent with Apache...
3237 */
3238
3239 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3240 "pipe_command: command=\"%s\", options=\"%s\"",
3241 command, options);
3242
3243 strlcpy(argbuf, options, sizeof(argbuf));
3244
3245 argv[0] = argbuf;
3246 query_string = NULL;
3247
3248 for (commptr = argbuf, argc = 1; *commptr != '\0' && argc < 99; commptr ++)
3249 {
3250 /*
3251 * Break arguments whenever we see a + or space...
3252 */
3253
3254 if (*commptr == ' ' || *commptr == '+' || (*commptr == '?' && argc == 1))
3255 {
3256 /*
3257 * Terminate the current string and skip trailing whitespace...
3258 */
3259
3260 *commptr++ = '\0';
3261
3262 while (*commptr == ' ')
3263 commptr ++;
3264
3265 /*
3266 * If we don't have a blank string, save it as another argument...
3267 */
3268
3269 if (*commptr)
3270 {
3271 argv[argc] = commptr;
3272 argc ++;
3273 }
3274 else
3275 break;
3276
3277 /*
3278 * If we see an "=" in the remaining string, make a copy of it since
3279 * it will be query data...
3280 */
3281
3282 if (argc == 2 && strchr(commptr, '=') && con->operation == HTTP_GET)
3283 cupsdSetStringf(&query_string, "QUERY_STRING=%s", commptr);
3284
3285 /*
3286 * Don't skip the first non-blank character...
3287 */
3288
3289 commptr --;
3290 }
3291 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
3292 isxdigit(commptr[2] & 255))
3293 {
3294 /*
3295 * Convert the %xx notation to the individual character.
3296 */
3297
3298 if (commptr[1] >= '0' && commptr[1] <= '9')
3299 *commptr = (commptr[1] - '0') << 4;
3300 else
3301 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
3302
3303 if (commptr[2] >= '0' && commptr[2] <= '9')
3304 *commptr |= commptr[2] - '0';
3305 else
3306 *commptr |= tolower(commptr[2]) - 'a' + 10;
3307
3308 _cups_strcpy(commptr + 1, commptr + 3);
3309
3310 /*
3311 * Check for a %00 and break if that is the case...
3312 */
3313
3314 if (!*commptr)
3315 break;
3316 }
3317 }
3318
3319 argv[argc] = NULL;
3320
3321 if (argv[0][0] == '\0')
3322 argv[0] = strrchr(command, '/') + 1;
3323
3324 /*
3325 * Setup the environment variables as needed...
3326 */
3327
3328 if (con->language)
3329 snprintf(lang, sizeof(lang), "LANG=%s.UTF-8", con->language->language);
3330 else
3331 strcpy(lang, "LANG=C");
3332
3333 strcpy(remote_addr, "REMOTE_ADDR=");
3334 httpAddrString(con->http.hostaddr, remote_addr + 12,
3335 sizeof(remote_addr) - 12);
3336
3337 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
3338 con->http.hostname);
3339
3340 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
3341 if ((uriptr = strchr(script_name, '?')) != NULL)
3342 *uriptr = '\0';
3343
3344 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
3345
3346 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3347 con->servername);
3348
3349 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
3350
3351 envp[envc ++] = lang;
3352 envp[envc ++] = "REDIRECT_STATUS=1";
3353 envp[envc ++] = server_name;
3354 envp[envc ++] = server_port;
3355 envp[envc ++] = remote_addr;
3356 envp[envc ++] = remote_host;
3357 envp[envc ++] = script_name;
3358
3359 if (con->username[0])
3360 {
3361 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
3362
3363 envp[envc ++] = remote_user;
3364 }
3365
3366 if (con->http.version == HTTP_1_1)
3367 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
3368 else if (con->http.version == HTTP_1_0)
3369 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
3370 else
3371 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
3372
3373 if (con->http.cookie)
3374 {
3375 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
3376 con->http.cookie);
3377 envp[envc ++] = http_cookie;
3378 }
3379
3380 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
3381 {
3382 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
3383 con->http.fields[HTTP_FIELD_USER_AGENT]);
3384 envp[envc ++] = http_user_agent;
3385 }
3386
3387 if (con->operation == HTTP_GET)
3388 {
3389 for (i = 0; i < argc; i ++)
3390 cupsdLogMessage(CUPSD_LOG_DEBUG2, "argv[%d] = \"%s\"", i, argv[i]);
3391
3392 envp[envc ++] = "REQUEST_METHOD=GET";
3393
3394 if (query_string)
3395 {
3396 /*
3397 * Add GET form variables after ?...
3398 */
3399
3400 envp[envc ++] = query_string;
3401 }
3402 }
3403 else
3404 {
3405 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT, con->bytes);
3406 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
3407 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
3408
3409 envp[envc ++] = "REQUEST_METHOD=POST";
3410 envp[envc ++] = content_length;
3411 envp[envc ++] = content_type;
3412 }
3413
3414 /*
3415 * Tell the CGI if we are using encryption...
3416 */
3417
3418 if (con->http.encryption == HTTP_ENCRYPT_ALWAYS)
3419 envp[envc ++] = "HTTPS=ON";
3420
3421 /*
3422 * Terminate the environment array...
3423 */
3424
3425 envp[envc] = NULL;
3426
3427 if (LogLevel == CUPSD_LOG_DEBUG2)
3428 {
3429 for (i = 0; i < argc; i ++)
3430 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3431 "pipe_command: argv[%d] = \"%s\"", i, argv[i]);
3432 for (i = 0; i < envc; i ++)
3433 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3434 "pipe_command: envp[%d] = \"%s\"", i, envp[i]);
3435 }
3436
3437 /*
3438 * Create a pipe for the output...
3439 */
3440
3441 if (cupsdOpenPipe(fds))
3442 {
3443 cupsdClearString(&query_string);
3444
3445 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create pipes for CGI %s - %s",
3446 argv[0], strerror(errno));
3447 return (0);
3448 }
3449
3450 /*
3451 * Then execute the command...
3452 */
3453
3454 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
3455 -1, root, &pid) < 0)
3456 {
3457 /*
3458 * Error - can't fork!
3459 */
3460
3461 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to fork for CGI %s - %s", argv[0],
3462 strerror(errno));
3463
3464 cupsdClosePipe(fds);
3465 pid = 0;
3466 }
3467 else
3468 {
3469 /*
3470 * Fork successful - return the PID...
3471 */
3472
3473 if (con->username[0])
3474 cupsdAddCert(pid, con->username);
3475
3476 cupsdLogMessage(CUPSD_LOG_DEBUG, "CGI %s started - PID = %d", command, pid);
3477
3478 *outfile = fds[0];
3479 close(fds[1]);
3480 }
3481
3482 cupsdClearString(&query_string);
3483
3484 return (pid);
3485}
3486
3487
3488/*
e00b005a 3489 * End of "$Id: client.c 5046 2006-02-01 22:11:58Z mike $".
ef416fc2 3490 */
Unnamed repository; edit this file 'description' to name the repository.