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[thirdparty/cups.git] / scheduler / client.c
1 /*
2 * "$Id: client.c 5567 2006-05-22 15:33:11Z mike $"
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 * cupsdReadClient() - Read data from a client.
30 * cupsdSendCommand() - Send output from a command via HTTP.
31 * cupsdSendError() - Send an error message via HTTP.
32 * cupsdSendHeader() - Send an HTTP request.
33 * cupsdUpdateCGI() - Read status messages from CGI scripts and programs.
34 * cupsdWriteClient() - Write data to a client as needed.
35 * check_if_modified() - Decode an "If-Modified-Since" line.
36 * encrypt_client() - Enable encryption for the client...
37 * get_cdsa_server_certs() - Convert a keychain name into the CFArrayRef
38 * required by SSLSetCertificate.
39 * get_file() - Get a filename and state info.
40 * install_conf_file() - Install a configuration file.
41 * is_cgi() - Is the resource a CGI script/program?
42 * is_path_absolute() - Is a path absolute and free of relative elements.
43 * make_certificate() - Make a self-signed SSL/TLS certificate.
44 * pipe_command() - Pipe the output of a command to the remote client.
45 * write_file() - Send a file via HTTP.
46 */
47
48 /*
49 * Include necessary headers...
50 */
51
52 #include <cups/http-private.h>
53 #include "cupsd.h"
54
55 #ifdef HAVE_CDSASSL
56 # include <Security/Security.h>
57 #endif /* HAVE_CDSASSL */
58 #ifdef HAVE_GNUTLS
59 # include <gnutls/x509.h>
60 #endif /* HAVE_GNUTLS */
61
62
63 /*
64 * Local functions...
65 */
66
67 static int check_if_modified(cupsd_client_t *con,
68 struct stat *filestats);
69 #ifdef HAVE_SSL
70 static int encrypt_client(cupsd_client_t *con);
71 #endif /* HAVE_SSL */
72 #ifdef HAVE_CDSASSL
73 static CFArrayRef get_cdsa_server_certs(void);
74 #endif /* HAVE_CDSASSL */
75 static char *get_file(cupsd_client_t *con, struct stat *filestats,
76 char *filename, int len);
77 static http_status_t install_conf_file(cupsd_client_t *con);
78 static int is_cgi(cupsd_client_t *con, const char *filename,
79 struct stat *filestats, mime_type_t *type);
80 static int is_path_absolute(const char *path);
81 #ifdef HAVE_GNUTLS
82 static void make_certificate(void);
83 #endif /* HAVE_GNUTLS */
84 static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
85 char *command, char *options, int root);
86 static int write_file(cupsd_client_t *con, http_status_t code,
87 char *filename, char *type,
88 struct stat *filestats);
89
90
91 /*
92 * 'cupsdAcceptClient()' - Accept a new client.
93 */
94
95 void
96 cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
97 {
98 int count; /* Count of connections on a host */
99 int val; /* Parameter value */
100 cupsd_client_t *con, /* New client pointer */
101 *tempcon; /* Temporary client pointer */
102 http_addrlist_t *addrlist, /* List of adddresses for host */
103 *addr; /* Current address */
104 socklen_t addrlen; /* Length of address */
105 char *hostname; /* Hostname for address */
106 http_addr_t temp; /* Temporary address variable */
107 static time_t last_dos = 0; /* Time of last DoS attack */
108
109
110 cupsdLogMessage(CUPSD_LOG_DEBUG2,
111 "cupsdAcceptClient(lis=%p) %d Clients = %d",
112 lis, lis->fd, cupsArrayCount(Clients));
113
114 /*
115 * Make sure we don't have a full set of clients already...
116 */
117
118 if (cupsArrayCount(Clients) == MaxClients)
119 return;
120
121 /*
122 * Get a pointer to the next available client...
123 */
124
125 if (!Clients)
126 Clients = cupsArrayNew(NULL, NULL);
127
128 if (!Clients)
129 return;
130
131 con = calloc(1, sizeof(cupsd_client_t));
132
133 con->http.activity = time(NULL);
134 con->file = -1;
135 con->http.hostaddr = &(con->clientaddr);
136
137 /*
138 * Accept the client and get the remote address...
139 */
140
141 addrlen = sizeof(http_addr_t);
142
143 if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
144 &addrlen)) < 0)
145 {
146 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
147 strerror(errno));
148 free(con);
149 return;
150 }
151
152 #ifdef AF_INET6
153 if (lis->address.addr.sa_family == AF_INET6)
154 {
155 /*
156 * Save the connected port number...
157 */
158
159 con->http.hostaddr->ipv6.sin6_port = lis->address.ipv6.sin6_port;
160
161 /*
162 * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
163 * can more easily use...
164 */
165
166 if (con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
167 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
168 ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
169 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
170 }
171 else
172 #endif /* AF_INET6 */
173 if (lis->address.addr.sa_family == AF_INET)
174 con->http.hostaddr->ipv4.sin_port = lis->address.ipv4.sin_port;
175
176 /*
177 * Check the number of clients on the same address...
178 */
179
180 for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
181 tempcon;
182 tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
183 if (httpAddrEqual(tempcon->http.hostaddr, con->http.hostaddr))
184 {
185 count ++;
186 if (count >= MaxClientsPerHost)
187 break;
188 }
189
190 if (count >= MaxClientsPerHost)
191 {
192 if ((time(NULL) - last_dos) >= 60)
193 {
194 last_dos = time(NULL);
195 cupsdLogMessage(CUPSD_LOG_WARN,
196 "Possible DoS attack - more than %d clients connecting "
197 "from %s!",
198 MaxClientsPerHost, tempcon->http.hostname);
199 }
200
201 #ifdef WIN32
202 closesocket(con->http.fd);
203 #else
204 close(con->http.fd);
205 #endif /* WIN32 */
206
207 free(con);
208 return;
209 }
210
211 /*
212 * Get the hostname or format the IP address as needed...
213 */
214
215 if (httpAddrLocalhost(con->http.hostaddr))
216 {
217 /*
218 * Map accesses from the loopback interface to "localhost"...
219 */
220
221 strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
222 hostname = con->http.hostname;
223 }
224 else
225 {
226 /*
227 * Map accesses from the same host to the server name.
228 */
229
230 for (addr = ServerAddrs; addr; addr = addr->next)
231 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
232 break;
233
234 if (addr)
235 {
236 strlcpy(con->http.hostname, ServerName, sizeof(con->http.hostname));
237 hostname = con->http.hostname;
238 }
239 else if (HostNameLookups)
240 hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
241 sizeof(con->http.hostname));
242 else
243 {
244 hostname = NULL;
245 httpAddrString(con->http.hostaddr, con->http.hostname,
246 sizeof(con->http.hostname));
247 }
248 }
249
250 if (hostname == NULL && HostNameLookups == 2)
251 {
252 /*
253 * Can't have an unresolved IP address with double-lookups enabled...
254 */
255
256 cupsdLogMessage(CUPSD_LOG_DEBUG2,
257 "cupsdAcceptClient: Closing connection %d...",
258 con->http.fd);
259
260 #ifdef WIN32
261 closesocket(con->http.fd);
262 #else
263 close(con->http.fd);
264 #endif /* WIN32 */
265
266 cupsdLogMessage(CUPSD_LOG_WARN,
267 "Name lookup failed - connection from %s closed!",
268 con->http.hostname);
269
270 free(con);
271 return;
272 }
273
274 if (HostNameLookups == 2)
275 {
276 /*
277 * Do double lookups as needed...
278 */
279
280 if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL)) != NULL)
281 {
282 /*
283 * See if the hostname maps to the same IP address...
284 */
285
286 for (addr = addrlist; addr; addr = addr->next)
287 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
288 break;
289 }
290 else
291 addr = NULL;
292
293 httpAddrFreeList(addrlist);
294
295 if (!addr)
296 {
297 /*
298 * Can't have a hostname that doesn't resolve to the same IP address
299 * with double-lookups enabled...
300 */
301
302 cupsdLogMessage(CUPSD_LOG_DEBUG2,
303 "cupsdAcceptClient: Closing connection %d...",
304 con->http.fd);
305
306 #ifdef WIN32
307 closesocket(con->http.fd);
308 #else
309 close(con->http.fd);
310 #endif /* WIN32 */
311
312 cupsdLogMessage(CUPSD_LOG_WARN,
313 "IP lookup failed - connection from %s closed!",
314 con->http.hostname);
315 free(con);
316 return;
317 }
318 }
319
320 #ifdef AF_INET6
321 if (con->http.hostaddr->addr.sa_family == AF_INET6)
322 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv6)",
323 con->http.fd, con->http.hostname,
324 ntohs(con->http.hostaddr->ipv6.sin6_port));
325 else
326 #endif /* AF_INET6 */
327 #ifdef AF_LOCAL
328 if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
329 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s (Domain)",
330 con->http.fd, con->http.hostname);
331 else
332 #endif /* AF_LOCAL */
333 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv4)",
334 con->http.fd, con->http.hostname,
335 ntohs(con->http.hostaddr->ipv4.sin_port));
336
337 /*
338 * Get the local address the client connected to...
339 */
340
341 addrlen = sizeof(temp);
342 if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
343 {
344 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
345 strerror(errno));
346
347 strcpy(con->servername, "localhost");
348 con->serverport = LocalPort;
349 }
350 else
351 {
352 #ifdef AF_INET6
353 if (temp.addr.sa_family == AF_INET6)
354 {
355 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
356 con->serverport = ntohs(lis->address.ipv6.sin6_port);
357 }
358 else
359 #endif /* AF_INET6 */
360 if (temp.addr.sa_family == AF_INET)
361 {
362 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
363 con->serverport = ntohs(lis->address.ipv4.sin_port);
364 }
365 else
366 {
367 strcpy(con->servername, "localhost");
368 con->serverport = LocalPort;
369 }
370 }
371
372 cupsArrayAdd(Clients, con);
373
374 cupsdLogMessage(CUPSD_LOG_DEBUG2,
375 "cupsdAcceptClient: %d connected to server on %s:%d",
376 con->http.fd, con->servername, con->serverport);
377
378 /*
379 * Using TCP_NODELAY improves responsiveness, especially on systems
380 * with a slow loopback interface... Since we write large buffers
381 * when sending print files and requests, there shouldn't be any
382 * performance penalty for this...
383 */
384
385 val = 1;
386 setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
387
388 /*
389 * Close this file on all execs...
390 */
391
392 fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
393
394 /*
395 * Add the socket to the select() input mask.
396 */
397
398 cupsdLogMessage(CUPSD_LOG_DEBUG2,
399 "cupsdAcceptClient: Adding fd %d to InputSet...",
400 con->http.fd);
401 FD_SET(con->http.fd, InputSet);
402
403 /*
404 * Temporarily suspend accept()'s until we lose a client...
405 */
406
407 if (cupsArrayCount(Clients) == MaxClients)
408 cupsdPauseListening();
409
410 #ifdef HAVE_SSL
411 /*
412 * See if we are connecting on a secure port...
413 */
414
415 if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
416 {
417 /*
418 * https connection; go secure...
419 */
420
421 con->http.encryption = HTTP_ENCRYPT_ALWAYS;
422
423 encrypt_client(con);
424 }
425 else
426 con->auto_ssl = 1;
427 #endif /* HAVE_SSL */
428 }
429
430
431 /*
432 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
433 */
434
435 void
436 cupsdCloseAllClients(void)
437 {
438 cupsd_client_t *con; /* Current client */
439
440
441 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
442 con;
443 con = (cupsd_client_t *)cupsArrayNext(Clients))
444 cupsdCloseClient(con);
445 }
446
447
448 /*
449 * 'cupsdCloseClient()' - Close a remote client.
450 */
451
452 int /* O - 1 if partial close, 0 if fully closed */
453 cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
454 {
455 int partial; /* Do partial close for SSL? */
456 #ifdef HAVE_LIBSSL
457 SSL_CTX *context; /* Context for encryption */
458 SSL *conn; /* Connection for encryption */
459 unsigned long error; /* Error code */
460 #elif defined(HAVE_GNUTLS)
461 http_tls_t *conn; /* TLS connection information */
462 int error; /* Error code */
463 gnutls_certificate_server_credentials *credentials;
464 /* TLS credentials */
465 # elif defined(HAVE_CDSASSL)
466 http_tls_t *conn; /* CDSA connection information */
467 #endif /* HAVE_LIBSSL */
468
469
470 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdCloseClient: %d", con->http.fd);
471
472 /*
473 * Flush pending writes before closing...
474 */
475
476 httpFlushWrite(HTTP(con));
477
478 partial = 0;
479
480 #ifdef HAVE_SSL
481 /*
482 * Shutdown encryption as needed...
483 */
484
485 if (con->http.tls)
486 {
487 partial = 1;
488
489 # ifdef HAVE_LIBSSL
490 conn = (SSL *)(con->http.tls);
491 context = SSL_get_SSL_CTX(conn);
492
493 switch (SSL_shutdown(conn))
494 {
495 case 1 :
496 cupsdLogMessage(CUPSD_LOG_INFO,
497 "cupsdCloseClient: SSL shutdown successful!");
498 break;
499 case -1 :
500 cupsdLogMessage(CUPSD_LOG_ERROR,
501 "cupsdCloseClient: Fatal error during SSL shutdown!");
502 default :
503 while ((error = ERR_get_error()) != 0)
504 cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdCloseClient: %s",
505 ERR_error_string(error, NULL));
506 break;
507 }
508
509 SSL_CTX_free(context);
510 SSL_free(conn);
511
512 # elif defined(HAVE_GNUTLS)
513 conn = (http_tls_t *)(con->http.tls);
514 credentials = (gnutls_certificate_server_credentials *)(conn->credentials);
515
516 error = gnutls_bye(conn->session, GNUTLS_SHUT_WR);
517 switch (error)
518 {
519 case GNUTLS_E_SUCCESS:
520 cupsdLogMessage(CUPSD_LOG_INFO,
521 "cupsdCloseClient: SSL shutdown successful!");
522 break;
523 default:
524 cupsdLogMessage(CUPSD_LOG_ERROR,
525 "cupsdCloseClient: %s", gnutls_strerror(error));
526 break;
527 }
528
529 gnutls_deinit(conn->session);
530 gnutls_certificate_free_credentials(*credentials);
531 free(credentials);
532 free(conn);
533
534 # elif defined(HAVE_CDSASSL)
535 conn = (http_tls_t *)(con->http.tls);
536
537 while (SSLClose(conn->session) == errSSLWouldBlock)
538 usleep(1000);
539
540 SSLDisposeContext(conn->session);
541
542 if (conn->certsArray)
543 CFRelease(conn->certsArray);
544
545 free(conn);
546 # endif /* HAVE_LIBSSL */
547
548 con->http.tls = NULL;
549 }
550 #endif /* HAVE_SSL */
551
552 if (con->pipe_pid != 0)
553 {
554 /*
555 * Stop any CGI process...
556 */
557
558 cupsdLogMessage(CUPSD_LOG_DEBUG2,
559 "cupsdCloseClient: %d Killing process ID %d...",
560 con->http.fd, con->pipe_pid);
561 cupsdEndProcess(con->pipe_pid, 1);
562 con->pipe_pid = 0;
563 }
564
565 if (con->file >= 0)
566 {
567 if (FD_ISSET(con->file, InputSet))
568 {
569 cupsdLogMessage(CUPSD_LOG_DEBUG2,
570 "cupsdCloseClient: %d Removing fd %d from InputSet...",
571 con->http.fd, con->file);
572 FD_CLR(con->file, InputSet);
573 }
574
575 cupsdLogMessage(CUPSD_LOG_DEBUG2,
576 "cupsdCloseClient: %d Closing data file %d.",
577 con->http.fd, con->file);
578
579 close(con->file);
580 con->file = -1;
581 }
582
583 /*
584 * Close the socket and clear the file from the input set for select()...
585 */
586
587 if (con->http.fd > 0)
588 {
589 if (partial)
590 {
591 /*
592 * Only do a partial close so that the encrypted client gets everything.
593 */
594
595 cupsdLogMessage(CUPSD_LOG_DEBUG2,
596 "cupsdCloseClient: Removing fd %d from OutputSet...",
597 con->http.fd);
598 shutdown(con->http.fd, 0);
599 FD_CLR(con->http.fd, OutputSet);
600 }
601 else
602 {
603 /*
604 * Shut the socket down fully...
605 */
606
607 cupsdLogMessage(CUPSD_LOG_DEBUG2,
608 "cupsdCloseClient: Removing fd %d from InputSet and OutputSet...",
609 con->http.fd);
610 close(con->http.fd);
611 FD_CLR(con->http.fd, InputSet);
612 FD_CLR(con->http.fd, OutputSet);
613 con->http.fd = -1;
614 }
615 }
616
617 if (!partial)
618 {
619 /*
620 * Free memory...
621 */
622
623 if (con->http.input_set)
624 free(con->http.input_set);
625
626 httpClearCookie(HTTP(con));
627
628 cupsdClearString(&con->filename);
629 cupsdClearString(&con->command);
630 cupsdClearString(&con->options);
631
632 if (con->request)
633 {
634 ippDelete(con->request);
635 con->request = NULL;
636 }
637
638 if (con->response)
639 {
640 ippDelete(con->response);
641 con->response = NULL;
642 }
643
644 if (con->language)
645 {
646 cupsLangFree(con->language);
647 con->language = NULL;
648 }
649
650 /*
651 * Re-enable new client connections if we are going back under the
652 * limit...
653 */
654
655 if (cupsArrayCount(Clients) == MaxClients)
656 cupsdResumeListening();
657
658 /*
659 * Compact the list of clients as necessary...
660 */
661
662 cupsArrayRemove(Clients, con);
663
664 free(con);
665 }
666
667 return (partial);
668 }
669
670
671 /*
672 * 'cupsdReadClient()' - Read data from a client.
673 */
674
675 int /* O - 1 on success, 0 on error */
676 cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
677 {
678 char line[32768], /* Line from client... */
679 operation[64], /* Operation code from socket */
680 version[64], /* HTTP version number string */
681 locale[64], /* Locale */
682 *ptr; /* Pointer into strings */
683 int major, minor; /* HTTP version numbers */
684 http_status_t status; /* Transfer status */
685 ipp_state_t ipp_state; /* State of IPP transfer */
686 int bytes; /* Number of bytes to POST */
687 char *filename; /* Name of file for GET/HEAD */
688 char buf[1024]; /* Buffer for real filename */
689 struct stat filestats; /* File information */
690 mime_type_t *type; /* MIME type of file */
691 cupsd_printer_t *p; /* Printer */
692 static unsigned request_id = 0; /* Request ID for temp files */
693
694
695 status = HTTP_CONTINUE;
696
697 cupsdLogMessage(CUPSD_LOG_DEBUG2,
698 "cupsdReadClient: %d, used=%d, file=%d state=%d",
699 con->http.fd, con->http.used, con->file, con->http.state);
700
701 if (con->http.error)
702 {
703 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: http error seen...");
704 return (cupsdCloseClient(con));
705 }
706
707 #ifdef HAVE_SSL
708 if (con->auto_ssl)
709 {
710 /*
711 * Automatically check for a SSL/TLS handshake...
712 */
713
714 con->auto_ssl = 0;
715
716 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
717 (!buf[0] || !strchr("DGHOPT", buf[0])))
718 {
719 /*
720 * Encrypt this connection...
721 */
722
723 cupsdLogMessage(CUPSD_LOG_DEBUG2,
724 "cupsdReadClient: Saw first byte %02X, auto-negotiating SSL/TLS session...",
725 buf[0] & 255);
726
727 encrypt_client(con);
728 return (1);
729 }
730 }
731 #endif /* HAVE_SSL */
732
733 switch (con->http.state)
734 {
735 case HTTP_WAITING :
736 /*
737 * See if we've received a request line...
738 */
739
740 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
741 {
742 cupsdLogMessage(CUPSD_LOG_DEBUG2,
743 "cupsdReadClient: httpGets returned EOF...");
744 return (cupsdCloseClient(con));
745 }
746
747 /*
748 * Ignore blank request lines...
749 */
750
751 if (line[0] == '\0')
752 break;
753
754 /*
755 * Clear other state variables...
756 */
757
758 httpClearFields(HTTP(con));
759
760 con->http.activity = time(NULL);
761 con->http.version = HTTP_1_0;
762 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
763 con->http.data_encoding = HTTP_ENCODE_LENGTH;
764 con->http.data_remaining = 0;
765 con->http._data_remaining = 0;
766 con->operation = HTTP_WAITING;
767 con->bytes = 0;
768 con->file = -1;
769 con->file_ready = 0;
770 con->pipe_pid = 0;
771 con->username[0] = '\0';
772 con->password[0] = '\0';
773 con->uri[0] = '\0';
774
775 cupsdClearString(&con->command);
776 cupsdClearString(&con->options);
777
778 if (con->language != NULL)
779 {
780 cupsLangFree(con->language);
781 con->language = NULL;
782 }
783
784 /*
785 * Grab the request line...
786 */
787
788 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
789 {
790 case 1 :
791 cupsdLogMessage(CUPSD_LOG_ERROR,
792 "Bad request line \"%s\" from %s!", line,
793 con->http.hostname);
794 cupsdSendError(con, HTTP_BAD_REQUEST);
795 return (cupsdCloseClient(con));
796 case 2 :
797 con->http.version = HTTP_0_9;
798 break;
799 case 3 :
800 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
801 {
802 cupsdLogMessage(CUPSD_LOG_ERROR,
803 "Bad request line \"%s\" from %s!", line,
804 con->http.hostname);
805 cupsdSendError(con, HTTP_BAD_REQUEST);
806 return (cupsdCloseClient(con));
807 }
808
809 if (major < 2)
810 {
811 con->http.version = (http_version_t)(major * 100 + minor);
812 if (con->http.version == HTTP_1_1 && KeepAlive)
813 con->http.keep_alive = HTTP_KEEPALIVE_ON;
814 else
815 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
816 }
817 else
818 {
819 cupsdSendError(con, HTTP_NOT_SUPPORTED);
820 return (cupsdCloseClient(con));
821 }
822 break;
823 }
824
825 /*
826 * Handle full URLs in the request line...
827 */
828
829 if (strcmp(con->uri, "*"))
830 {
831 char method[HTTP_MAX_URI], /* Method/scheme */
832 userpass[HTTP_MAX_URI], /* Username:password */
833 hostname[HTTP_MAX_URI], /* Hostname */
834 resource[HTTP_MAX_URI]; /* Resource path */
835 int port; /* Port number */
836
837
838 /*
839 * Separate the URI into its components...
840 */
841
842 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
843 method, sizeof(method),
844 userpass, sizeof(userpass),
845 hostname, sizeof(hostname), &port,
846 resource, sizeof(resource));
847
848 /*
849 * Only allow URIs with the servername, localhost, or an IP
850 * address...
851 */
852
853 if (strcmp(method, "file") &&
854 strcasecmp(hostname, ServerName) &&
855 strcasecmp(hostname, "localhost") &&
856 !isdigit(hostname[0]))
857 {
858 /*
859 * Nope, we don't do proxies...
860 */
861
862 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad URI \"%s\" in request!",
863 con->uri);
864 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED);
865 return (cupsdCloseClient(con));
866 }
867
868 /*
869 * Copy the resource portion back into the URI; both resource and
870 * con->uri are HTTP_MAX_URI bytes in size...
871 */
872
873 strcpy(con->uri, resource);
874 }
875
876 /*
877 * Process the request...
878 */
879
880 if (!strcmp(operation, "GET"))
881 con->http.state = HTTP_GET;
882 else if (!strcmp(operation, "PUT"))
883 con->http.state = HTTP_PUT;
884 else if (!strcmp(operation, "POST"))
885 con->http.state = HTTP_POST;
886 else if (!strcmp(operation, "DELETE"))
887 con->http.state = HTTP_DELETE;
888 else if (!strcmp(operation, "TRACE"))
889 con->http.state = HTTP_TRACE;
890 else if (!strcmp(operation, "OPTIONS"))
891 con->http.state = HTTP_OPTIONS;
892 else if (!strcmp(operation, "HEAD"))
893 con->http.state = HTTP_HEAD;
894 else
895 {
896 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad operation \"%s\"!", operation);
897 cupsdSendError(con, HTTP_BAD_REQUEST);
898 return (cupsdCloseClient(con));
899 }
900
901 con->start = time(NULL);
902 con->operation = con->http.state;
903
904 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %s %s HTTP/%d.%d",
905 con->http.fd, operation, con->uri,
906 con->http.version / 100, con->http.version % 100);
907
908 con->http.status = HTTP_OK;
909
910 case HTTP_OPTIONS :
911 case HTTP_DELETE :
912 case HTTP_GET :
913 case HTTP_HEAD :
914 case HTTP_POST :
915 case HTTP_PUT :
916 case HTTP_TRACE :
917 /*
918 * Parse incoming parameters until the status changes...
919 */
920
921 status = httpUpdate(HTTP(con));
922
923 if (status != HTTP_OK && status != HTTP_CONTINUE)
924 {
925 cupsdSendError(con, HTTP_BAD_REQUEST);
926 return (cupsdCloseClient(con));
927 }
928 break;
929
930 default :
931 break; /* Anti-compiler-warning-code */
932 }
933
934 /*
935 * Handle new transfers...
936 */
937
938 if (status == HTTP_OK)
939 {
940 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
941 {
942 /*
943 * Figure out the locale from the Accept-Language and Content-Type
944 * fields...
945 */
946
947 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ',')) != NULL)
948 *ptr = '\0';
949
950 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ';')) != NULL)
951 *ptr = '\0';
952
953 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE], "charset=")) != NULL)
954 {
955 /*
956 * Combine language and charset, and trim any extra params in the
957 * content-type.
958 */
959
960 snprintf(locale, sizeof(locale), "%s.%s",
961 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
962
963 if ((ptr = strchr(locale, ',')) != NULL)
964 *ptr = '\0';
965 }
966 else
967 snprintf(locale, sizeof(locale), "%s.%s",
968 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], DefaultCharset);
969
970 cupsdLogMessage(CUPSD_LOG_DEBUG,
971 "cupsdReadClient: %d Browser asked for language \"%s\"...",
972 con->http.fd, locale);
973
974 con->language = cupsLangGet(locale);
975 }
976 else
977 con->language = cupsLangGet(DefaultLocale);
978
979 cupsdAuthorize(con);
980
981 if (!strncmp(con->http.fields[HTTP_FIELD_CONNECTION], "Keep-Alive", 10) &&
982 KeepAlive)
983 con->http.keep_alive = HTTP_KEEPALIVE_ON;
984
985 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
986 con->http.version >= HTTP_1_1)
987 {
988 /*
989 * HTTP/1.1 and higher require the "Host:" field...
990 */
991
992 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
993 return (cupsdCloseClient(con));
994 }
995 else if (con->operation == HTTP_OPTIONS)
996 {
997 /*
998 * Do OPTIONS command...
999 */
1000
1001 if (con->best && con->best->type != AUTH_NONE)
1002 {
1003 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL))
1004 return (cupsdCloseClient(con));
1005 }
1006
1007 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1008 con->http.tls == NULL)
1009 {
1010 #ifdef HAVE_SSL
1011 /*
1012 * Do encryption stuff...
1013 */
1014
1015 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1016 return (cupsdCloseClient(con));
1017
1018 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1019 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1020 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1021 httpPrintf(HTTP(con), "\r\n");
1022
1023 encrypt_client(con);
1024 #else
1025 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1026 return (cupsdCloseClient(con));
1027 #endif /* HAVE_SSL */
1028 }
1029
1030 if (!cupsdSendHeader(con, HTTP_OK, NULL))
1031 return (cupsdCloseClient(con));
1032
1033 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1034 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1035 httpPrintf(HTTP(con), "\r\n");
1036 }
1037 else if (!is_path_absolute(con->uri))
1038 {
1039 /*
1040 * Protect against malicious users!
1041 */
1042
1043 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1044 return (cupsdCloseClient(con));
1045 }
1046 else
1047 {
1048 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1049 con->http.tls == NULL)
1050 {
1051 #ifdef HAVE_SSL
1052 /*
1053 * Do encryption stuff...
1054 */
1055
1056 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1057 return (cupsdCloseClient(con));
1058
1059 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1060 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1061 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1062 httpPrintf(HTTP(con), "\r\n");
1063
1064 encrypt_client(con);
1065 #else
1066 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1067 return (cupsdCloseClient(con));
1068 #endif /* HAVE_SSL */
1069 }
1070
1071 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1072 {
1073 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1074 "cupsdReadClient: Unauthorized request for %s...\n",
1075 con->uri);
1076 cupsdSendError(con, status);
1077 return (cupsdCloseClient(con));
1078 }
1079
1080 if (con->http.expect &&
1081 (con->operation == HTTP_POST || con->operation == HTTP_PUT))
1082 {
1083 if (con->http.expect == HTTP_CONTINUE)
1084 {
1085 /*
1086 * Send 100-continue header...
1087 */
1088
1089 if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL))
1090 return (cupsdCloseClient(con));
1091 }
1092 else
1093 {
1094 /*
1095 * Send 417-expectation-failed header...
1096 */
1097
1098 if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL))
1099 return (cupsdCloseClient(con));
1100
1101 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1102 httpPrintf(HTTP(con), "\r\n");
1103 }
1104 }
1105
1106 switch (con->http.state)
1107 {
1108 case HTTP_GET_SEND :
1109 if (!strncmp(con->uri, "/printers/", 10) &&
1110 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1111 {
1112 /*
1113 * Send PPD file - get the real printer name since printer
1114 * names are not case sensitive but filenames can be...
1115 */
1116
1117 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1118
1119 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1120 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1121 else
1122 {
1123 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1124 return (cupsdCloseClient(con));
1125
1126 break;
1127 }
1128 }
1129
1130 if ((!strncmp(con->uri, "/admin", 6) &&
1131 strncmp(con->uri, "/admin/conf/", 12) &&
1132 strncmp(con->uri, "/admin/log/", 11)) ||
1133 !strncmp(con->uri, "/printers", 9) ||
1134 !strncmp(con->uri, "/classes", 8) ||
1135 !strncmp(con->uri, "/help", 5) ||
1136 !strncmp(con->uri, "/jobs", 5))
1137 {
1138 /*
1139 * Send CGI output...
1140 */
1141
1142 if (!strncmp(con->uri, "/admin", 6))
1143 {
1144 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1145 ServerBin);
1146
1147 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
1148 }
1149 else if (!strncmp(con->uri, "/printers", 9))
1150 {
1151 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1152 ServerBin);
1153
1154 if (con->uri[9] && con->uri[10])
1155 cupsdSetString(&con->options, con->uri + 9);
1156 else
1157 cupsdSetString(&con->options, NULL);
1158 }
1159 else if (!strncmp(con->uri, "/classes", 8))
1160 {
1161 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1162 ServerBin);
1163
1164 if (con->uri[8] && con->uri[9])
1165 cupsdSetString(&con->options, con->uri + 8);
1166 else
1167 cupsdSetString(&con->options, NULL);
1168 }
1169 else if (!strncmp(con->uri, "/jobs", 5))
1170 {
1171 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1172 ServerBin);
1173
1174 if (con->uri[5] && con->uri[6])
1175 cupsdSetString(&con->options, con->uri + 5);
1176 else
1177 cupsdSetString(&con->options, NULL);
1178 }
1179 else
1180 {
1181 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1182 ServerBin);
1183
1184 if (con->uri[5] && con->uri[6])
1185 cupsdSetString(&con->options, con->uri + 5);
1186 else
1187 cupsdSetString(&con->options, NULL);
1188 }
1189
1190 if (!cupsdSendCommand(con, con->command, con->options, 0))
1191 {
1192 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1193 return (cupsdCloseClient(con));
1194 }
1195 else
1196 cupsdLogRequest(con, HTTP_OK);
1197
1198 if (con->http.version <= HTTP_1_0)
1199 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1200 }
1201 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1202 (strchr(con->uri + 12, '/') ||
1203 strlen(con->uri) == 12)) ||
1204 (!strncmp(con->uri, "/admin/log/", 11) &&
1205 (strchr(con->uri + 11, '/') ||
1206 strlen(con->uri) == 11)))
1207 {
1208 /*
1209 * GET can only be done to configuration files under
1210 * /admin/conf...
1211 */
1212
1213 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1214 return (cupsdCloseClient(con));
1215
1216 break;
1217 }
1218 else
1219 {
1220 /*
1221 * Serve a file...
1222 */
1223
1224 if ((filename = get_file(con, &filestats, buf,
1225 sizeof(buf))) == NULL)
1226 {
1227 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1228 return (cupsdCloseClient(con));
1229
1230 break;
1231 }
1232
1233 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
1234
1235 if (is_cgi(con, filename, &filestats, type))
1236 {
1237 /*
1238 * Note: con->command and con->options were set by
1239 * is_cgi()...
1240 */
1241
1242 if (!cupsdSendCommand(con, con->command, con->options, 0))
1243 {
1244 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1245 return (cupsdCloseClient(con));
1246 }
1247 else
1248 cupsdLogRequest(con, HTTP_OK);
1249
1250 if (con->http.version <= HTTP_1_0)
1251 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1252 break;
1253 }
1254
1255 if (!check_if_modified(con, &filestats))
1256 {
1257 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1258 return (cupsdCloseClient(con));
1259 }
1260 else
1261 {
1262 if (type == NULL)
1263 strcpy(line, "text/plain");
1264 else
1265 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1266
1267 if (!write_file(con, HTTP_OK, filename, line, &filestats))
1268 return (cupsdCloseClient(con));
1269 }
1270 }
1271 break;
1272
1273 case HTTP_POST_RECV :
1274 /*
1275 * See if the POST request includes a Content-Length field, and if
1276 * so check the length against any limits that are set...
1277 */
1278
1279 cupsdLogMessage(CUPSD_LOG_DEBUG2, "POST %s", con->uri);
1280 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1281 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1282
1283 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1284 MaxRequestSize > 0 &&
1285 con->http.data_remaining > MaxRequestSize)
1286 {
1287 /*
1288 * Request too large...
1289 */
1290
1291 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1292 return (cupsdCloseClient(con));
1293
1294 break;
1295 }
1296 else if (con->http.data_remaining < 0)
1297 {
1298 /*
1299 * Negative content lengths are invalid!
1300 */
1301
1302 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1303 return (cupsdCloseClient(con));
1304
1305 break;
1306 }
1307
1308 /*
1309 * See what kind of POST request this is; for IPP requests the
1310 * content-type field will be "application/ipp"...
1311 */
1312
1313 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1314 "application/ipp"))
1315 con->request = ippNew();
1316 else if ((!strncmp(con->uri, "/admin", 6) &&
1317 strncmp(con->uri, "/admin/conf/", 12) &&
1318 strncmp(con->uri, "/admin/log/", 11)) ||
1319 !strncmp(con->uri, "/printers", 9) ||
1320 !strncmp(con->uri, "/classes", 8) ||
1321 !strncmp(con->uri, "/help", 5) ||
1322 !strncmp(con->uri, "/jobs", 5))
1323 {
1324 /*
1325 * CGI request...
1326 */
1327
1328 if (!strncmp(con->uri, "/admin", 6))
1329 {
1330 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1331 ServerBin);
1332
1333 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
1334 }
1335 else if (!strncmp(con->uri, "/printers", 9))
1336 {
1337 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1338 ServerBin);
1339
1340 if (con->uri[9] && con->uri[10])
1341 cupsdSetString(&con->options, con->uri + 9);
1342 else
1343 cupsdSetString(&con->options, NULL);
1344 }
1345 else if (!strncmp(con->uri, "/classes", 8))
1346 {
1347 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1348 ServerBin);
1349
1350 if (con->uri[8] && con->uri[9])
1351 cupsdSetString(&con->options, con->uri + 8);
1352 else
1353 cupsdSetString(&con->options, NULL);
1354 }
1355 else if (!strncmp(con->uri, "/jobs", 5))
1356 {
1357 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1358 ServerBin);
1359
1360 if (con->uri[5] && con->uri[6])
1361 cupsdSetString(&con->options, con->uri + 5);
1362 else
1363 cupsdSetString(&con->options, NULL);
1364 }
1365 else
1366 {
1367 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1368 ServerBin);
1369
1370 if (con->uri[5] && con->uri[6])
1371 cupsdSetString(&con->options, con->uri + 5);
1372 else
1373 cupsdSetString(&con->options, NULL);
1374 }
1375
1376 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1377 "cupsdReadClient: %d command=\"%s\", "
1378 "options = \"%s\"",
1379 con->http.fd, con->command,
1380 con->options ? con->options : "(null)");
1381
1382 if (con->http.version <= HTTP_1_0)
1383 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1384 }
1385 else
1386 {
1387 /*
1388 * POST to a file...
1389 */
1390
1391 if ((filename = get_file(con, &filestats, buf,
1392 sizeof(buf))) == NULL)
1393 {
1394 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1395 return (cupsdCloseClient(con));
1396
1397 break;
1398 }
1399
1400 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
1401
1402 if (!is_cgi(con, filename, &filestats, type))
1403 {
1404 /*
1405 * Only POST to CGI's...
1406 */
1407
1408 if (!cupsdSendError(con, HTTP_UNAUTHORIZED))
1409 return (cupsdCloseClient(con));
1410 }
1411 }
1412 break;
1413
1414 case HTTP_PUT_RECV :
1415 /*
1416 * Validate the resource name...
1417 */
1418
1419 if (strncmp(con->uri, "/admin/conf/", 12) ||
1420 strchr(con->uri + 12, '/') ||
1421 strlen(con->uri) == 12)
1422 {
1423 /*
1424 * PUT can only be done to configuration files under
1425 * /admin/conf...
1426 */
1427
1428 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1429 return (cupsdCloseClient(con));
1430
1431 break;
1432 }
1433
1434 /*
1435 * See if the PUT request includes a Content-Length field, and if
1436 * so check the length against any limits that are set...
1437 */
1438
1439 cupsdLogMessage(CUPSD_LOG_DEBUG2, "PUT %s", con->uri);
1440 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1441 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1442
1443 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1444 MaxRequestSize > 0 &&
1445 con->http.data_remaining > MaxRequestSize)
1446 {
1447 /*
1448 * Request too large...
1449 */
1450
1451 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1452 return (cupsdCloseClient(con));
1453
1454 break;
1455 }
1456 else if (con->http.data_remaining < 0)
1457 {
1458 /*
1459 * Negative content lengths are invalid!
1460 */
1461
1462 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1463 return (cupsdCloseClient(con));
1464
1465 break;
1466 }
1467
1468 /*
1469 * Open a temporary file to hold the request...
1470 */
1471
1472 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1473 request_id ++);
1474 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1475
1476 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1477 "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1478 con->filename, con->file);
1479
1480 if (con->file < 0)
1481 {
1482 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1483 return (cupsdCloseClient(con));
1484 }
1485
1486 fchmod(con->file, 0640);
1487 fchown(con->file, RunUser, Group);
1488 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1489 break;
1490
1491 case HTTP_DELETE :
1492 case HTTP_TRACE :
1493 cupsdSendError(con, HTTP_NOT_IMPLEMENTED);
1494 return (cupsdCloseClient(con));
1495
1496 case HTTP_HEAD :
1497 if (!strncmp(con->uri, "/printers/", 10) &&
1498 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1499 {
1500 /*
1501 * Send PPD file - get the real printer name since printer
1502 * names are not case sensitive but filenames can be...
1503 */
1504
1505 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1506
1507 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1508 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1509 else
1510 {
1511 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1512 return (cupsdCloseClient(con));
1513
1514 break;
1515 }
1516 }
1517
1518 if ((!strncmp(con->uri, "/admin", 6) &&
1519 strncmp(con->uri, "/admin/conf/", 12) &&
1520 strncmp(con->uri, "/admin/log/", 11)) ||
1521 !strncmp(con->uri, "/printers", 9) ||
1522 !strncmp(con->uri, "/classes", 8) ||
1523 !strncmp(con->uri, "/help", 5) ||
1524 !strncmp(con->uri, "/jobs", 5))
1525 {
1526 /*
1527 * CGI output...
1528 */
1529
1530 if (!cupsdSendHeader(con, HTTP_OK, "text/html"))
1531 return (cupsdCloseClient(con));
1532
1533 if (httpPrintf(HTTP(con), "\r\n") < 0)
1534 return (cupsdCloseClient(con));
1535
1536 cupsdLogRequest(con, HTTP_OK);
1537 }
1538 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1539 (strchr(con->uri + 12, '/') ||
1540 strlen(con->uri) == 12)) ||
1541 (!strncmp(con->uri, "/admin/log/", 11) &&
1542 (strchr(con->uri + 11, '/') ||
1543 strlen(con->uri) == 11)))
1544 {
1545 /*
1546 * HEAD can only be done to configuration files under
1547 * /admin/conf...
1548 */
1549
1550 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1551 return (cupsdCloseClient(con));
1552
1553 break;
1554 }
1555 else if ((filename = get_file(con, &filestats, buf,
1556 sizeof(buf))) == NULL)
1557 {
1558 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html"))
1559 return (cupsdCloseClient(con));
1560
1561 cupsdLogRequest(con, HTTP_NOT_FOUND);
1562 }
1563 else if (!check_if_modified(con, &filestats))
1564 {
1565 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1566 return (cupsdCloseClient(con));
1567
1568 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
1569 }
1570 else
1571 {
1572 /*
1573 * Serve a file...
1574 */
1575
1576 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
1577 if (type == NULL)
1578 strcpy(line, "text/plain");
1579 else
1580 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1581
1582 if (!cupsdSendHeader(con, HTTP_OK, line))
1583 return (cupsdCloseClient(con));
1584
1585 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
1586 httpGetDateString(filestats.st_mtime)) < 0)
1587 return (cupsdCloseClient(con));
1588
1589 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
1590 (unsigned long)filestats.st_size) < 0)
1591 return (cupsdCloseClient(con));
1592
1593 cupsdLogRequest(con, HTTP_OK);
1594 }
1595
1596 if (httpPrintf(HTTP(con), "\r\n") < 0)
1597 return (cupsdCloseClient(con));
1598
1599 con->http.state = HTTP_WAITING;
1600 break;
1601
1602 default :
1603 break; /* Anti-compiler-warning-code */
1604 }
1605 }
1606 }
1607
1608 /*
1609 * Handle any incoming data...
1610 */
1611
1612 switch (con->http.state)
1613 {
1614 case HTTP_PUT_RECV :
1615 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1616 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_%s, "
1617 "con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1618 con->http.fd,
1619 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1620 "CHUNKED" : "LENGTH",
1621 CUPS_LLCAST con->http.data_remaining, con->file);
1622
1623 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
1624 return (cupsdCloseClient(con));
1625 else if (bytes > 0)
1626 {
1627 con->bytes += bytes;
1628
1629 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1630 "cupsdReadClient: %d writing %d bytes to %d",
1631 con->http.fd, bytes, con->file);
1632
1633 if (write(con->file, line, bytes) < bytes)
1634 {
1635 cupsdLogMessage(CUPSD_LOG_ERROR,
1636 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1637 bytes, con->filename, strerror(errno));
1638
1639 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1640 "cupsdReadClient: Closing data file %d...",
1641 con->file);
1642
1643 close(con->file);
1644 con->file = -1;
1645 unlink(con->filename);
1646 cupsdClearString(&con->filename);
1647
1648 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1649 return (cupsdCloseClient(con));
1650 }
1651 }
1652
1653 if (con->http.state == HTTP_WAITING)
1654 {
1655 /*
1656 * End of file, see how big it is...
1657 */
1658
1659 fstat(con->file, &filestats);
1660
1661 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1662 "cupsdReadClient: %d Closing data file %d, size="
1663 CUPS_LLFMT ".",
1664 con->http.fd, con->file,
1665 CUPS_LLCAST filestats.st_size);
1666
1667 close(con->file);
1668 con->file = -1;
1669
1670 if (filestats.st_size > MaxRequestSize &&
1671 MaxRequestSize > 0)
1672 {
1673 /*
1674 * Request is too big; remove it and send an error...
1675 */
1676
1677 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1678 "cupsdReadClient: %d Removing temp file %s",
1679 con->http.fd, con->filename);
1680 unlink(con->filename);
1681 cupsdClearString(&con->filename);
1682
1683 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1684 return (cupsdCloseClient(con));
1685 }
1686
1687 /*
1688 * Install the configuration file...
1689 */
1690
1691 status = install_conf_file(con);
1692
1693 /*
1694 * Return the status to the client...
1695 */
1696
1697 if (!cupsdSendError(con, status))
1698 return (cupsdCloseClient(con));
1699 }
1700 break;
1701
1702 case HTTP_POST_RECV :
1703 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1704 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_"
1705 "%s, con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1706 con->http.fd,
1707 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1708 "CHUNKED" : "LENGTH",
1709 CUPS_LLCAST con->http.data_remaining, con->file);
1710
1711 if (con->request != NULL)
1712 {
1713 /*
1714 * Grab any request data from the connection...
1715 */
1716
1717 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
1718 {
1719 cupsdLogMessage(CUPSD_LOG_ERROR,
1720 "cupsdReadClient: %d IPP Read Error!",
1721 con->http.fd);
1722
1723 cupsdSendError(con, HTTP_BAD_REQUEST);
1724 return (cupsdCloseClient(con));
1725 }
1726 else if (ipp_state != IPP_DATA)
1727 {
1728 if (con->http.state == HTTP_POST_SEND)
1729 {
1730 cupsdSendError(con, HTTP_BAD_REQUEST);
1731 return (cupsdCloseClient(con));
1732 }
1733
1734 break;
1735 }
1736 else
1737 con->bytes += ippLength(con->request);
1738 }
1739
1740 if (con->file < 0 && con->http.state != HTTP_POST_SEND)
1741 {
1742 /*
1743 * Create a file as needed for the request data...
1744 */
1745
1746 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
1747 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1748
1749 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1750 con->filename, con->file);
1751
1752 if (con->file < 0)
1753 {
1754 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1755 return (cupsdCloseClient(con));
1756 }
1757
1758 fchmod(con->file, 0640);
1759 fchown(con->file, RunUser, Group);
1760 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1761 }
1762
1763 if (con->http.state != HTTP_POST_SEND)
1764 {
1765 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
1766 return (cupsdCloseClient(con));
1767 else if (bytes > 0)
1768 {
1769 con->bytes += bytes;
1770
1771 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1772 "cupsdReadClient: %d writing %d bytes to %d",
1773 con->http.fd, bytes, con->file);
1774
1775 if (write(con->file, line, bytes) < bytes)
1776 {
1777 cupsdLogMessage(CUPSD_LOG_ERROR,
1778 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1779 bytes, con->filename, strerror(errno));
1780
1781 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1782 "cupsdReadClient: Closing file %d...",
1783 con->file);
1784
1785 close(con->file);
1786 con->file = -1;
1787 unlink(con->filename);
1788 cupsdClearString(&con->filename);
1789
1790 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1791 return (cupsdCloseClient(con));
1792 }
1793 }
1794 else if (con->http.state == HTTP_POST_RECV)
1795 return (1); /* ??? */
1796 else if (con->http.state != HTTP_POST_SEND)
1797 return (cupsdCloseClient(con));
1798 }
1799
1800 if (con->http.state == HTTP_POST_SEND)
1801 {
1802 if (con->file >= 0)
1803 {
1804 fstat(con->file, &filestats);
1805
1806 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1807 "cupsdReadClient: %d Closing data file %d, "
1808 "size=" CUPS_LLFMT ".",
1809 con->http.fd, con->file,
1810 CUPS_LLCAST filestats.st_size);
1811
1812 close(con->file);
1813 con->file = -1;
1814
1815 if (filestats.st_size > MaxRequestSize &&
1816 MaxRequestSize > 0)
1817 {
1818 /*
1819 * Request is too big; remove it and send an error...
1820 */
1821
1822 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1823 "cupsdReadClient: %d Removing temp file %s",
1824 con->http.fd, con->filename);
1825 unlink(con->filename);
1826 cupsdClearString(&con->filename);
1827
1828 if (con->request)
1829 {
1830 /*
1831 * Delete any IPP request data...
1832 */
1833
1834 ippDelete(con->request);
1835 con->request = NULL;
1836 }
1837
1838 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1839 return (cupsdCloseClient(con));
1840 }
1841
1842 if (con->command)
1843 {
1844 if (!cupsdSendCommand(con, con->command, con->options, 0))
1845 {
1846 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1847 return (cupsdCloseClient(con));
1848 }
1849 else
1850 cupsdLogRequest(con, HTTP_OK);
1851 }
1852 }
1853
1854 if (con->request)
1855 return (cupsdProcessIPPRequest(con));
1856 }
1857 break;
1858
1859 default :
1860 break; /* Anti-compiler-warning-code */
1861 }
1862
1863 if (!con->http.keep_alive && con->http.state == HTTP_WAITING)
1864 return (cupsdCloseClient(con));
1865 else
1866 return (1);
1867 }
1868
1869
1870 /*
1871 * 'cupsdSendCommand()' - Send output from a command via HTTP.
1872 */
1873
1874 int /* O - 1 on success, 0 on failure */
1875 cupsdSendCommand(
1876 cupsd_client_t *con, /* I - Client connection */
1877 char *command, /* I - Command to run */
1878 char *options, /* I - Command-line options */
1879 int root) /* I - Run as root? */
1880 {
1881 int fd; /* Standard input file descriptor */
1882
1883
1884 if (con->filename)
1885 fd = open(con->filename, O_RDONLY);
1886 else
1887 fd = open("/dev/null", O_RDONLY);
1888
1889 if (fd < 0)
1890 {
1891 cupsdLogMessage(CUPSD_LOG_ERROR,
1892 "cupsdSendCommand: %d Unable to open \"%s\" for reading: %s",
1893 con->http.fd, con->filename ? con->filename : "/dev/null",
1894 strerror(errno));
1895 return (0);
1896 }
1897
1898 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
1899
1900 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
1901
1902 close(fd);
1903
1904 cupsdLogMessage(CUPSD_LOG_INFO, "Started \"%s\" (pid=%d)", command,
1905 con->pipe_pid);
1906
1907 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendCommand: %d file=%d",
1908 con->http.fd, con->file);
1909
1910 if (con->pipe_pid == 0)
1911 return (0);
1912
1913 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1914
1915 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1916 "cupsdSendCommand: Adding fd %d to InputSet...", con->file);
1917 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1918 "cupsdSendCommand: Adding fd %d to OutputSet...",
1919 con->http.fd);
1920
1921 FD_SET(con->file, InputSet);
1922 FD_SET(con->http.fd, OutputSet);
1923
1924 con->sent_header = 0;
1925 con->file_ready = 0;
1926 con->got_fields = 0;
1927 con->field_col = 0;
1928
1929 return (1);
1930 }
1931
1932
1933 /*
1934 * 'cupsdSendError()' - Send an error message via HTTP.
1935 */
1936
1937 int /* O - 1 if successful, 0 otherwise */
1938 cupsdSendError(cupsd_client_t *con, /* I - Connection */
1939 http_status_t code) /* I - Error code */
1940 {
1941 #ifdef HAVE_SSL
1942 /*
1943 * Force client to upgrade for authentication if that is how the
1944 * server is configured...
1945 */
1946
1947 if (code == HTTP_UNAUTHORIZED &&
1948 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
1949 strcasecmp(con->http.hostname, "localhost") &&
1950 !con->http.tls)
1951 {
1952 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1953 "cupsdSendError: Encryption before authentication!");
1954 code = HTTP_UPGRADE_REQUIRED;
1955 }
1956 #endif /* HAVE_SSL */
1957
1958 /*
1959 * Put the request in the access_log file...
1960 */
1961
1962 cupsdLogRequest(con, code);
1963
1964 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendError: %d code=%d (%s)",
1965 con->http.fd, code, httpStatus(code));
1966
1967 /*
1968 * To work around bugs in some proxies, don't use Keep-Alive for some
1969 * error messages...
1970 */
1971
1972 if (code >= HTTP_BAD_REQUEST)
1973 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1974
1975 /*
1976 * Send an error message back to the client. If the error code is a
1977 * 400 or 500 series, make sure the message contains some text, too!
1978 */
1979
1980 if (!cupsdSendHeader(con, code, NULL))
1981 return (0);
1982
1983 #ifdef HAVE_SSL
1984 if (code == HTTP_UPGRADE_REQUIRED)
1985 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
1986 return (0);
1987
1988 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n") < 0)
1989 return (0);
1990 #endif /* HAVE_SSL */
1991
1992 if ((con->http.version >= HTTP_1_1 && !con->http.keep_alive) ||
1993 (code >= HTTP_BAD_REQUEST && code != HTTP_UPGRADE_REQUIRED))
1994 {
1995 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
1996 return (0);
1997 }
1998
1999 if (code >= HTTP_BAD_REQUEST)
2000 {
2001 /*
2002 * Send a human-readable error message.
2003 */
2004
2005 char message[4096], /* Message for user */
2006 urltext[1024], /* URL redirection text */
2007 redirect[1024]; /* Redirection link */
2008 const char *text; /* Status-specific text */
2009
2010
2011 redirect[0] = '\0';
2012
2013 if (code == HTTP_UNAUTHORIZED)
2014 text = _cupsLangString(con->language,
2015 _("Enter your username and password or the "
2016 "root username and password to access this "
2017 "page."));
2018 else if (code == HTTP_UPGRADE_REQUIRED)
2019 {
2020 text = urltext;
2021
2022 snprintf(urltext, sizeof(urltext),
2023 _cupsLangString(con->language,
2024 _("You must access this page using the URL "
2025 "<A HREF=\"https://%s:%d%s\">"
2026 "https://%s:%d%s</A>.")),
2027 con->servername, con->serverport, con->uri,
2028 con->servername, con->serverport, con->uri);
2029
2030 snprintf(redirect, sizeof(redirect),
2031 "<META HTTP-EQUIV=\"Refresh\" CONTENT=\"3;https://%s:%d%s\">\n",
2032 con->servername, con->serverport, con->uri);
2033 }
2034 else
2035 text = "";
2036
2037 snprintf(message, sizeof(message),
2038 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" "
2039 "\"http://www.w3.org/TR/REC-html40/loose.dtd\">\n"
2040 "<HTML>\n"
2041 "<HEAD>\n"
2042 "\t<META HTTP-EQUIV=\"Content-Type\" "
2043 "CONTENT=\"text/html; charset=utf-8\">\n"
2044 "\t<TITLE>%d %s</TITLE>\n"
2045 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2046 "HREF=\"/cups.css\">\n"
2047 "%s"
2048 "</HEAD>\n"
2049 "<BODY>\n"
2050 "<H1>%d %s</H1>\n"
2051 "<P>%s</P>\n"
2052 "</BODY>\n"
2053 "</HTML>\n",
2054 code, httpStatus(code), redirect, code, httpStatus(code), text);
2055
2056 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2057 return (0);
2058 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2059 (int)strlen(message)) < 0)
2060 return (0);
2061 if (httpPrintf(HTTP(con), "\r\n") < 0)
2062 return (0);
2063 if (httpPrintf(HTTP(con), "%s", message) < 0)
2064 return (0);
2065 }
2066 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2067 return (0);
2068
2069 con->http.state = HTTP_WAITING;
2070
2071 return (1);
2072 }
2073
2074
2075 /*
2076 * 'cupsdSendHeader()' - Send an HTTP request.
2077 */
2078
2079 int /* O - 1 on success, 0 on failure */
2080 cupsdSendHeader(cupsd_client_t *con, /* I - Client to send to */
2081 http_status_t code, /* I - HTTP status code */
2082 char *type) /* I - MIME type of document */
2083 {
2084 /*
2085 * Send the HTTP status header...
2086 */
2087
2088 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2089 con->http.version % 100, code, httpStatus(code)) < 0)
2090 return (0);
2091
2092 if (code == HTTP_CONTINUE)
2093 {
2094 /*
2095 * 100-continue doesn't send any headers...
2096 */
2097
2098 if (httpPrintf(HTTP(con), "\r\n") < 0)
2099 return (0);
2100 else
2101 return (1);
2102 }
2103
2104 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2105 return (0);
2106 if (ServerHeader)
2107 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2108 return (0);
2109 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2110 {
2111 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2112 return (0);
2113 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2114 KeepAliveTimeout) < 0)
2115 return (0);
2116 }
2117 if (code == HTTP_METHOD_NOT_ALLOWED)
2118 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST\r\n") < 0)
2119 return (0);
2120
2121 if (code == HTTP_UNAUTHORIZED)
2122 {
2123 int auth_type; /* Authentication type */
2124
2125
2126 if (!con->best || con->best->type == AUTH_NONE)
2127 auth_type = DefaultAuthType;
2128 else
2129 auth_type = con->best->type;
2130
2131 if (auth_type != AUTH_DIGEST)
2132 {
2133 if (httpPrintf(HTTP(con),
2134 "WWW-Authenticate: Basic realm=\"CUPS\"\r\n") < 0)
2135 return (0);
2136 }
2137 else
2138 {
2139 if (httpPrintf(HTTP(con),
2140 "WWW-Authenticate: Digest realm=\"CUPS\", nonce=\"%s\"\r\n",
2141 con->http.hostname) < 0)
2142 return (0);
2143 }
2144 }
2145
2146 if (con->language && strcmp(con->language->language, "C"))
2147 {
2148 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2149 con->language->language) < 0)
2150 return (0);
2151 }
2152
2153 if (type)
2154 {
2155 if (!strcmp(type, "text/html"))
2156 {
2157 if (httpPrintf(HTTP(con),
2158 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2159 return (0);
2160 }
2161 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2162 return (0);
2163 }
2164
2165 return (1);
2166 }
2167
2168
2169 /*
2170 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2171 */
2172
2173 void
2174 cupsdUpdateCGI(void)
2175 {
2176 char *ptr, /* Pointer to end of line in buffer */
2177 message[1024]; /* Pointer to message text */
2178 int loglevel; /* Log level for message */
2179
2180
2181 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2182 message, sizeof(message))) != NULL)
2183 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2184 break;
2185
2186 if (ptr == NULL && errno)
2187 {
2188 /*
2189 * Fatal error on pipe - should never happen!
2190 */
2191
2192 cupsdLogMessage(CUPSD_LOG_CRIT,
2193 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2194 strerror(errno));
2195 }
2196 }
2197
2198
2199 /*
2200 * 'cupsdWriteClient()' - Write data to a client as needed.
2201 */
2202
2203 int /* O - 1 if success, 0 if fail */
2204 cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2205 {
2206 int bytes; /* Number of bytes written */
2207 char buf[16385]; /* Data buffer */
2208 char *bufptr; /* Pointer into buffer */
2209 ipp_state_t ipp_state; /* IPP state value */
2210
2211
2212 #ifdef DEBUG
2213 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2214 "cupsdWriteClient(con=%p) %d response=%p, file=%d "
2215 "pipe_pid=%d state=%d",
2216 con, con->http.fd, con->response, con->file, con->pipe_pid,
2217 con->http.state);
2218 #endif /* DEBUG */
2219
2220 if (con->http.state != HTTP_GET_SEND &&
2221 con->http.state != HTTP_POST_SEND)
2222 return (1);
2223
2224 if (con->response != NULL)
2225 {
2226 ipp_state = ippWrite(&(con->http), con->response);
2227 bytes = ipp_state != IPP_ERROR && ipp_state != IPP_DATA;
2228 }
2229 else if ((bytes = read(con->file, buf, sizeof(buf) - 1)) > 0)
2230 {
2231 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2232 "cupsdWriteClient: Read %d bytes from file %d...",
2233 bytes, con->file);
2234
2235 if (con->pipe_pid && !con->got_fields)
2236 {
2237 /*
2238 * Inspect the data for Content-Type and other fields.
2239 */
2240
2241 buf[bytes] = '\0';
2242
2243 for (bufptr = buf; !con->got_fields && *bufptr; bufptr ++)
2244 if (*bufptr == '\n')
2245 {
2246 /*
2247 * Send line to client...
2248 */
2249
2250 if (bufptr > buf && bufptr[-1] == '\r')
2251 bufptr[-1] = '\0';
2252 *bufptr++ = '\0';
2253
2254 cupsdLogMessage(CUPSD_LOG_DEBUG2, "Script header: %s", buf);
2255
2256 if (!con->sent_header)
2257 {
2258 /*
2259 * Handle redirection and CGI status codes...
2260 */
2261
2262 if (!strncasecmp(buf, "Location:", 9))
2263 {
2264 cupsdSendHeader(con, HTTP_SEE_OTHER, NULL);
2265 if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
2266 return (0);
2267 }
2268 else if (!strncasecmp(buf, "Status:", 7))
2269 cupsdSendError(con, atoi(buf + 7));
2270 else
2271 {
2272 cupsdSendHeader(con, HTTP_OK, NULL);
2273
2274 if (con->http.version == HTTP_1_1)
2275 {
2276 con->http.data_encoding = HTTP_ENCODE_CHUNKED;
2277
2278 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
2279 return (0);
2280 }
2281 }
2282
2283 con->sent_header = 1;
2284 }
2285
2286 if (strncasecmp(buf, "Status:", 7))
2287 httpPrintf(HTTP(con), "%s\r\n", buf);
2288
2289 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d %s",
2290 con->http.fd, buf);
2291
2292 /*
2293 * Update buffer...
2294 */
2295
2296 bytes -= (bufptr - buf);
2297 memmove(buf, bufptr, bytes + 1);
2298 bufptr = buf - 1;
2299
2300 /*
2301 * See if the line was empty...
2302 */
2303
2304 if (con->field_col == 0)
2305 con->got_fields = 1;
2306 else
2307 con->field_col = 0;
2308 }
2309 else if (*bufptr != '\r')
2310 con->field_col ++;
2311
2312 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2313 "cupsdWriteClient: %d bytes=%d, got_fields=%d",
2314 con->http.fd, bytes, con->got_fields);
2315
2316 if (bytes > 0 && !con->got_fields)
2317 {
2318 /*
2319 * Remaining text needs to go out...
2320 */
2321
2322 httpPrintf(HTTP(con), "%s", buf);
2323
2324 con->http.activity = time(NULL);
2325 return (1);
2326 }
2327 else if (bytes == 0)
2328 con->http.activity = time(NULL);
2329 }
2330
2331 if (bytes > 0)
2332 {
2333 if (httpWrite2(HTTP(con), buf, bytes) < 0)
2334 {
2335 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2336 "cupsdWriteClient: %d Write of %d bytes failed!",
2337 con->http.fd, bytes);
2338
2339 cupsdCloseClient(con);
2340 return (0);
2341 }
2342
2343 con->bytes += bytes;
2344
2345 if (con->http.state == HTTP_WAITING)
2346 bytes = 0;
2347 }
2348 }
2349
2350 if (bytes <= 0)
2351 {
2352 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d bytes < 0",
2353 con->http.fd);
2354
2355 cupsdLogRequest(con, HTTP_OK);
2356
2357 httpFlushWrite(HTTP(con));
2358
2359 if (con->http.data_encoding == HTTP_ENCODE_CHUNKED)
2360 {
2361 if (httpPrintf(HTTP(con), "0\r\n\r\n") < 0)
2362 {
2363 cupsdCloseClient(con);
2364 return (0);
2365 }
2366 }
2367
2368 con->http.state = HTTP_WAITING;
2369
2370 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2371 "cupsdWriteClient: Removing fd %d from OutputSet...",
2372 con->http.fd);
2373
2374 FD_CLR(con->http.fd, OutputSet);
2375
2376 if (con->file >= 0)
2377 {
2378 if (FD_ISSET(con->file, InputSet))
2379 {
2380 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2381 "cupsdWriteClient: Removing fd %d from InputSet...",
2382 con->file);
2383 FD_CLR(con->file, InputSet);
2384 }
2385
2386 if (con->pipe_pid)
2387 cupsdEndProcess(con->pipe_pid, 0);
2388
2389 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2390 "cupsdWriteClient: %d Closing data file %d.",
2391 con->http.fd, con->file);
2392
2393 close(con->file);
2394 con->file = -1;
2395 con->pipe_pid = 0;
2396 }
2397
2398 if (con->filename)
2399 {
2400 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2401 "cupsdWriteClient: %d Removing temp file %s",
2402 con->http.fd, con->filename);
2403 unlink(con->filename);
2404 cupsdClearString(&con->filename);
2405 }
2406
2407 if (con->request != NULL)
2408 {
2409 ippDelete(con->request);
2410 con->request = NULL;
2411 }
2412
2413 if (con->response != NULL)
2414 {
2415 ippDelete(con->response);
2416 con->response = NULL;
2417 }
2418
2419 cupsdClearString(&con->command);
2420 cupsdClearString(&con->options);
2421
2422 if (!con->http.keep_alive)
2423 {
2424 cupsdCloseClient(con);
2425 return (0);
2426 }
2427 }
2428 else
2429 {
2430 con->file_ready = 0;
2431
2432 if (con->pipe_pid && !FD_ISSET(con->file, InputSet))
2433 {
2434 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2435 "cupsdWriteClient: Adding fd %d to InputSet...",
2436 con->file);
2437 FD_SET(con->file, InputSet);
2438 }
2439 }
2440
2441 con->http.activity = time(NULL);
2442
2443 return (1);
2444 }
2445
2446
2447 /*
2448 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2449 */
2450
2451 static int /* O - 1 if modified since */
2452 check_if_modified(
2453 cupsd_client_t *con, /* I - Client connection */
2454 struct stat *filestats) /* I - File information */
2455 {
2456 char *ptr; /* Pointer into field */
2457 time_t date; /* Time/date value */
2458 off_t size; /* Size/length value */
2459
2460
2461 size = 0;
2462 date = 0;
2463 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
2464
2465 if (*ptr == '\0')
2466 return (1);
2467
2468 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2469 "check_if_modified: %d If-Modified-Since=\"%s\"",
2470 con->http.fd, ptr);
2471
2472 while (*ptr != '\0')
2473 {
2474 while (isspace(*ptr) || *ptr == ';')
2475 ptr ++;
2476
2477 if (strncasecmp(ptr, "length=", 7) == 0)
2478 {
2479 ptr += 7;
2480 size = strtoll(ptr, NULL, 10);
2481
2482 while (isdigit(*ptr))
2483 ptr ++;
2484 }
2485 else if (isalpha(*ptr))
2486 {
2487 date = httpGetDateTime(ptr);
2488 while (*ptr != '\0' && *ptr != ';')
2489 ptr ++;
2490 }
2491 else
2492 ptr ++;
2493 }
2494
2495 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2496 "check_if_modified: %d sizes=" CUPS_LLFMT ","
2497 CUPS_LLFMT " dates=%d,%d",
2498 con->http.fd, CUPS_LLCAST size,
2499 CUPS_LLCAST filestats->st_size, (int)date,
2500 (int)filestats->st_mtime);
2501
2502 return ((size != filestats->st_size && size != 0) ||
2503 (date < filestats->st_mtime && date != 0) ||
2504 (size == 0 && date == 0));
2505 }
2506
2507
2508 #ifdef HAVE_SSL
2509 /*
2510 * 'encrypt_client()' - Enable encryption for the client...
2511 */
2512
2513 static int /* O - 1 on success, 0 on error */
2514 encrypt_client(cupsd_client_t *con) /* I - Client to encrypt */
2515 {
2516 # ifdef HAVE_LIBSSL
2517 SSL_CTX *context; /* Context for encryption */
2518 SSL *conn; /* Connection for encryption */
2519 unsigned long error; /* Error code */
2520
2521
2522 /*
2523 * Create the SSL context and accept the connection...
2524 */
2525
2526 context = SSL_CTX_new(SSLv23_server_method());
2527
2528 SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
2529 SSL_CTX_use_PrivateKey_file(context, ServerKey, SSL_FILETYPE_PEM);
2530 SSL_CTX_use_certificate_file(context, ServerCertificate, SSL_FILETYPE_PEM);
2531
2532 conn = SSL_new(context);
2533
2534 SSL_set_fd(conn, con->http.fd);
2535 if (SSL_accept(conn) != 1)
2536 {
2537 cupsdLogMessage(CUPSD_LOG_ERROR,
2538 "encrypt_client: Unable to encrypt connection from %s!",
2539 con->http.hostname);
2540
2541 while ((error = ERR_get_error()) != 0)
2542 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2543 ERR_error_string(error, NULL));
2544
2545 SSL_CTX_free(context);
2546 SSL_free(conn);
2547 return (0);
2548 }
2549
2550 cupsdLogMessage(CUPSD_LOG_DEBUG,
2551 "encrypt_client: %d Connection from %s now encrypted.",
2552 con->http.fd, con->http.hostname);
2553
2554 con->http.tls = conn;
2555 return (1);
2556
2557 # elif defined(HAVE_GNUTLS)
2558 http_tls_t *conn; /* TLS session object */
2559 int error; /* Error code */
2560 gnutls_certificate_server_credentials *credentials;
2561 /* TLS credentials */
2562
2563
2564 /*
2565 * Verify that we have a certificate...
2566 */
2567
2568 if (access(ServerKey, 0) || access(ServerCertificate, 0))
2569 {
2570 /*
2571 * Nope, make a self-signed certificate...
2572 */
2573
2574 make_certificate();
2575 }
2576
2577 /*
2578 * Create the SSL object and perform the SSL handshake...
2579 */
2580
2581 conn = (http_tls_t *)malloc(sizeof(http_tls_t));
2582
2583 if (conn == NULL)
2584 return (0);
2585
2586 credentials = (gnutls_certificate_server_credentials *)
2587 malloc(sizeof(gnutls_certificate_server_credentials));
2588 if (credentials == NULL)
2589 {
2590 cupsdLogMessage(CUPSD_LOG_ERROR,
2591 "encrypt_client: Unable to encrypt connection from %s!",
2592 con->http.hostname);
2593 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s", strerror(errno));
2594
2595 free(conn);
2596 return (0);
2597 }
2598
2599 gnutls_certificate_allocate_credentials(credentials);
2600 gnutls_certificate_set_x509_key_file(*credentials, ServerCertificate,
2601 ServerKey, GNUTLS_X509_FMT_PEM);
2602
2603 gnutls_init(&(conn->session), GNUTLS_SERVER);
2604 gnutls_set_default_priority(conn->session);
2605 gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
2606 gnutls_transport_set_ptr(conn->session,
2607 (gnutls_transport_ptr)((long)con->http.fd));
2608
2609 error = gnutls_handshake(conn->session);
2610
2611 if (error != GNUTLS_E_SUCCESS)
2612 {
2613 cupsdLogMessage(CUPSD_LOG_ERROR,
2614 "encrypt_client: Unable to encrypt connection from %s!",
2615 con->http.hostname);
2616 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2617 gnutls_strerror(error));
2618
2619 gnutls_deinit(conn->session);
2620 gnutls_certificate_free_credentials(*credentials);
2621 free(conn);
2622 free(credentials);
2623 return (0);
2624 }
2625
2626 cupsdLogMessage(CUPSD_LOG_DEBUG,
2627 "encrypt_client: %d Connection from %s now encrypted.",
2628 con->http.fd, con->http.hostname);
2629
2630 conn->credentials = credentials;
2631 con->http.tls = conn;
2632 return (1);
2633
2634 # elif defined(HAVE_CDSASSL)
2635 OSStatus error; /* Error code */
2636 http_tls_t *conn; /* CDSA connection information */
2637 cdsa_conn_ref_t u; /* Connection reference union */
2638
2639
2640 if ((conn = (http_tls_t *)malloc(sizeof(http_tls_t))) == NULL)
2641 return (0);
2642
2643 error = 0;
2644 conn->session = NULL;
2645 conn->certsArray = get_cdsa_server_certs();
2646
2647 if (!conn->certsArray)
2648 {
2649 cupsdLogMessage(CUPSD_LOG_ERROR,
2650 "EncryptClient: Could not find signing key in keychain "
2651 "\"%s\"", ServerCertificate);
2652 error = errSSLBadCert; /* errSSLBadConfiguration is a better choice, but not available on 10.2.x */
2653 }
2654
2655 if (!error)
2656 error = SSLNewContext(true, &conn->session);
2657
2658 if (!error)
2659 error = SSLSetIOFuncs(conn->session, _httpReadCDSA, _httpWriteCDSA);
2660
2661 if (!error)
2662 error = SSLSetProtocolVersion(conn->session, kSSLProtocol3);
2663
2664 if (!error)
2665 {
2666 /*
2667 * Use a union to resolve warnings about int/pointer size mismatches...
2668 */
2669
2670 u.connection = NULL;
2671 u.sock = con->http.fd;
2672 error = SSLSetConnection(conn->session, u.connection);
2673 }
2674
2675 if (!error)
2676 error = SSLSetAllowsExpiredCerts(conn->session, true);
2677
2678 if (!error)
2679 error = SSLSetAllowsAnyRoot(conn->session, true);
2680
2681 if (!error)
2682 error = SSLSetCertificate(conn->session, conn->certsArray);
2683
2684 if (!error)
2685 {
2686 /*
2687 * Perform SSL/TLS handshake
2688 */
2689
2690 while ((error = SSLHandshake(conn->session)) == errSSLWouldBlock)
2691 usleep(1000);
2692 }
2693
2694 if (error)
2695 {
2696 cupsdLogMessage(CUPSD_LOG_ERROR,
2697 "encrypt_client: Unable to encrypt connection from %s!",
2698 con->http.hostname);
2699
2700 cupsdLogMessage(CUPSD_LOG_ERROR,
2701 "encrypt_client: CDSA error code is %d", (int)error);
2702
2703 con->http.error = error;
2704 con->http.status = HTTP_ERROR;
2705
2706 if (conn->session)
2707 SSLDisposeContext(conn->session);
2708
2709 if (conn->certsArray)
2710 CFRelease(conn->certsArray);
2711
2712 free(conn);
2713
2714 return (0);
2715 }
2716
2717 cupsdLogMessage(CUPSD_LOG_DEBUG,
2718 "encrypt_client: %d Connection from %s now encrypted.",
2719 con->http.fd, con->http.hostname);
2720
2721 con->http.tls = conn;
2722 return (1);
2723
2724 # endif /* HAVE_LIBSSL */
2725 }
2726 #endif /* HAVE_SSL */
2727
2728
2729 #ifdef HAVE_CDSASSL
2730 /*
2731 * 'get_cdsa_server_certs()' - Convert a keychain name into the CFArrayRef
2732 * required by SSLSetCertificate.
2733 *
2734 * For now we assumes that there is exactly one SecIdentity in the
2735 * keychain - i.e. there is exactly one matching cert/private key pair.
2736 * In the future we will search a keychain for a SecIdentity matching a
2737 * specific criteria. We also skip the operation of adding additional
2738 * non-signing certs from the keychain to the CFArrayRef.
2739 *
2740 * To create a self-signed certificate for testing use the certtool.
2741 * Executing the following as root will do it:
2742 *
2743 * certtool c k=/Library/Keychains/System.keychain
2744 */
2745
2746 static CFArrayRef /* O - Array of certificates */
2747 get_cdsa_server_certs(void)
2748 {
2749 OSStatus err; /* Error info */
2750 SecKeychainRef kcRef; /* Keychain reference */
2751 SecIdentitySearchRef srchRef; /* Search reference */
2752 SecIdentityRef identity; /* Identity */
2753 CFArrayRef ca; /* Certificate array */
2754
2755
2756 kcRef = NULL;
2757 srchRef = NULL;
2758 identity = NULL;
2759 ca = NULL;
2760 err = SecKeychainOpen(ServerCertificate, &kcRef);
2761
2762 if (err)
2763 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot open keychain \"%s\", error %d.",
2764 ServerCertificate, (int)err);
2765 else
2766 {
2767 /*
2768 * Search for "any" identity matching specified key use;
2769 * in this app, we expect there to be exactly one.
2770 */
2771
2772 err = SecIdentitySearchCreate(kcRef, CSSM_KEYUSE_SIGN, &srchRef);
2773
2774 if (err)
2775 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2776 "Cannot find signing key in keychain \"%s\", error %d",
2777 ServerCertificate, (int)err);
2778 else
2779 {
2780 err = SecIdentitySearchCopyNext(srchRef, &identity);
2781
2782 if (err)
2783 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2784 "Cannot find signing key in keychain \"%s\", error %d",
2785 ServerCertificate, (int)err);
2786 else
2787 {
2788 if (CFGetTypeID(identity) != SecIdentityGetTypeID())
2789 cupsdLogMessage(CUPSD_LOG_ERROR,
2790 "SecIdentitySearchCopyNext CFTypeID failure!");
2791 else
2792 {
2793 /*
2794 * Found one. Place it in a CFArray.
2795 * TBD: snag other (non-identity) certs from keychain and add them
2796 * to array as well.
2797 */
2798
2799 ca = CFArrayCreate(NULL, (const void **)&identity, 1, &kCFTypeArrayCallBacks);
2800
2801 if (ca == nil)
2802 cupsdLogMessage(CUPSD_LOG_ERROR, "CFArrayCreate error");
2803 }
2804
2805 CFRelease(identity);
2806 }
2807
2808 CFRelease(srchRef);
2809 }
2810
2811 CFRelease(kcRef);
2812 }
2813
2814 return (ca);
2815 }
2816 #endif /* HAVE_CDSASSL */
2817
2818
2819 /*
2820 * 'get_file()' - Get a filename and state info.
2821 */
2822
2823 static char * /* O - Real filename */
2824 get_file(cupsd_client_t *con, /* I - Client connection */
2825 struct stat *filestats, /* O - File information */
2826 char *filename, /* IO - Filename buffer */
2827 int len) /* I - Buffer length */
2828 {
2829 int status; /* Status of filesystem calls */
2830 char *ptr; /* Pointer info filename */
2831 int plen; /* Remaining length after pointer */
2832
2833
2834 /*
2835 * Need to add DocumentRoot global...
2836 */
2837
2838 if (!strncmp(con->uri, "/ppd/", 5))
2839 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
2840 else if (!strncmp(con->uri, "/admin/conf/", 12))
2841 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
2842 else if (!strncmp(con->uri, "/admin/log/", 11))
2843 {
2844 if (!strcmp(con->uri + 11, "access_log") && AccessLog[0] == '/')
2845 strlcpy(filename, AccessLog, len);
2846 else if (!strcmp(con->uri + 11, "error_log") && ErrorLog[0] == '/')
2847 strlcpy(filename, ErrorLog, len);
2848 else if (!strcmp(con->uri + 11, "page_log") && PageLog[0] == '/')
2849 strlcpy(filename, PageLog, len);
2850 else
2851 return (NULL);
2852 }
2853 else if (con->language)
2854 snprintf(filename, len, "%s/%s%s", DocumentRoot, con->language->language,
2855 con->uri);
2856 else
2857 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2858
2859 if ((ptr = strchr(filename, '?')) != NULL)
2860 *ptr = '\0';
2861
2862 /*
2863 * Grab the status for this language; if there isn't a language-specific file
2864 * then fallback to the default one...
2865 */
2866
2867 if ((status = stat(filename, filestats)) != 0 && con->language &&
2868 strncmp(con->uri, "/ppd/", 5) &&
2869 strncmp(con->uri, "/admin/conf/", 12) &&
2870 strncmp(con->uri, "/admin/log/", 11))
2871 {
2872 /*
2873 * Drop the country code...
2874 */
2875
2876 char ll[3]; /* Short language name */
2877
2878
2879 strlcpy(ll, con->language->language, sizeof(ll));
2880 snprintf(filename, len, "%s/%s%s", DocumentRoot, ll, con->uri);
2881
2882 if ((ptr = strchr(filename, '?')) != NULL)
2883 *ptr = '\0';
2884
2885 if ((status = stat(filename, filestats)) != 0)
2886 {
2887 /*
2888 * Drop the language prefix and try the root directory...
2889 */
2890
2891 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2892
2893 if ((ptr = strchr(filename, '?')) != NULL)
2894 *ptr = '\0';
2895
2896 status = stat(filename, filestats);
2897 }
2898 }
2899
2900 /*
2901 * If we're found a directory, get the index.html file instead...
2902 */
2903
2904 if (!status && S_ISDIR(filestats->st_mode))
2905 {
2906 if (filename[strlen(filename) - 1] != '/')
2907 strlcat(filename, "/", len);
2908
2909 ptr = filename + strlen(filename);
2910 plen = len - (ptr - filename);
2911
2912 strlcpy(ptr, "index.html", plen);
2913 status = stat(filename, filestats);
2914
2915 #ifdef HAVE_JAVA
2916 if (status)
2917 {
2918 strlcpy(ptr, "index.class", plen);
2919 status = stat(filename, filestats);
2920 }
2921 #endif /* HAVE_JAVA */
2922
2923 #ifdef HAVE_PERL
2924 if (status)
2925 {
2926 strlcpy(ptr, "index.pl", plen);
2927 status = stat(filename, filestats);
2928 }
2929 #endif /* HAVE_PERL */
2930
2931 #ifdef HAVE_PHP
2932 if (status)
2933 {
2934 strlcpy(ptr, "index.php", plen);
2935 status = stat(filename, filestats);
2936 }
2937 #endif /* HAVE_PHP */
2938
2939 #ifdef HAVE_PYTHON
2940 if (status)
2941 {
2942 strlcpy(ptr, "index.pyc", plen);
2943 status = stat(filename, filestats);
2944 }
2945
2946 if (status)
2947 {
2948 strlcpy(ptr, "index.py", plen);
2949 status = stat(filename, filestats);
2950 }
2951 #endif /* HAVE_PYTHON */
2952 }
2953
2954 cupsdLogMessage(CUPSD_LOG_DEBUG2, "get_file: %d filename=%s size=%d",
2955 con->http.fd, filename,
2956 status ? -1 : (int)filestats->st_size);
2957
2958 if (!status)
2959 con->http.data_remaining = (int)filestats->st_size;
2960
2961 if (status)
2962 return (NULL);
2963 else
2964 return (filename);
2965 }
2966
2967
2968 /*
2969 * 'install_conf_file()' - Install a configuration file.
2970 */
2971
2972 static http_status_t /* O - Status */
2973 install_conf_file(cupsd_client_t *con) /* I - Connection */
2974 {
2975 cups_file_t *in, /* Input file */
2976 *out; /* Output file */
2977 char buffer[1024]; /* Copy buffer */
2978 int bytes; /* Number of bytes */
2979 char conffile[1024], /* Configuration filename */
2980 newfile[1024], /* New config filename */
2981 oldfile[1024]; /* Old config filename */
2982 struct stat confinfo; /* Config file info */
2983
2984
2985 /*
2986 * First construct the filenames...
2987 */
2988
2989 snprintf(conffile, sizeof(conffile), "%s%s", ServerRoot, con->uri + 11);
2990 snprintf(newfile, sizeof(newfile), "%s%s.N", ServerRoot, con->uri + 11);
2991 snprintf(oldfile, sizeof(oldfile), "%s%s.O", ServerRoot, con->uri + 11);
2992
2993 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...", conffile);
2994
2995 /*
2996 * Get the owner, group, and permissions of the configuration file.
2997 * If it doesn't exist, assign it to the User and Group in the
2998 * cupsd.conf file with mode 0640 permissions.
2999 */
3000
3001 if (stat(conffile, &confinfo))
3002 {
3003 confinfo.st_uid = User;
3004 confinfo.st_gid = Group;
3005 confinfo.st_mode = ConfigFilePerm;
3006 }
3007
3008 /*
3009 * Open the request file and new config file...
3010 */
3011
3012 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
3013 {
3014 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\" - %s",
3015 con->filename, strerror(errno));
3016 return (HTTP_SERVER_ERROR);
3017 }
3018
3019 if ((out = cupsFileOpen(newfile, "wb")) == NULL)
3020 {
3021 cupsFileClose(in);
3022 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open config file \"%s\" - %s",
3023 newfile, strerror(errno));
3024 return (HTTP_SERVER_ERROR);
3025 }
3026
3027 fchmod(cupsFileNumber(out), confinfo.st_mode);
3028 fchown(cupsFileNumber(out), confinfo.st_uid, confinfo.st_gid);
3029
3030 /*
3031 * Copy from the request to the new config file...
3032 */
3033
3034 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
3035 if (cupsFileWrite(out, buffer, bytes) < bytes)
3036 {
3037 cupsdLogMessage(CUPSD_LOG_ERROR,
3038 "Unable to copy to config file \"%s\" - %s",
3039 newfile, strerror(errno));
3040
3041 cupsFileClose(in);
3042 cupsFileClose(out);
3043 unlink(newfile);
3044
3045 return (HTTP_SERVER_ERROR);
3046 }
3047
3048 /*
3049 * Close the files...
3050 */
3051
3052 cupsFileClose(in);
3053 if (cupsFileClose(out))
3054 {
3055 cupsdLogMessage(CUPSD_LOG_ERROR,
3056 "Error file closing config file \"%s\" - %s",
3057 newfile, strerror(errno));
3058
3059 unlink(newfile);
3060
3061 return (HTTP_SERVER_ERROR);
3062 }
3063
3064 /*
3065 * Remove the request file...
3066 */
3067
3068 unlink(con->filename);
3069 cupsdClearString(&con->filename);
3070
3071 /*
3072 * Unlink the old backup, rename the current config file to the backup
3073 * filename, and rename the new config file to the config file name...
3074 */
3075
3076 if (unlink(oldfile))
3077 if (errno != ENOENT)
3078 {
3079 cupsdLogMessage(CUPSD_LOG_ERROR,
3080 "Unable to remove backup config file \"%s\" - %s",
3081 oldfile, strerror(errno));
3082
3083 unlink(newfile);
3084
3085 return (HTTP_SERVER_ERROR);
3086 }
3087
3088 if (rename(conffile, oldfile))
3089 if (errno != ENOENT)
3090 {
3091 cupsdLogMessage(CUPSD_LOG_ERROR,
3092 "Unable to rename old config file \"%s\" - %s",
3093 conffile, strerror(errno));
3094
3095 unlink(newfile);
3096
3097 return (HTTP_SERVER_ERROR);
3098 }
3099
3100 if (rename(newfile, conffile))
3101 {
3102 cupsdLogMessage(CUPSD_LOG_ERROR,
3103 "Unable to rename new config file \"%s\" - %s",
3104 newfile, strerror(errno));
3105
3106 rename(oldfile, conffile);
3107 unlink(newfile);
3108
3109 return (HTTP_SERVER_ERROR);
3110 }
3111
3112 /*
3113 * If the cupsd.conf file was updated, set the NeedReload flag...
3114 */
3115
3116 if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
3117 NeedReload = RELOAD_CUPSD;
3118 else
3119 NeedReload = RELOAD_ALL;
3120
3121 ReloadTime = time(NULL);
3122
3123 /*
3124 * Return that the file was created successfully...
3125 */
3126
3127 return (HTTP_CREATED);
3128 }
3129
3130
3131 /*
3132 * 'is_cgi()' - Is the resource a CGI script/program?
3133 */
3134
3135 static int /* O - 1 = CGI, 0 = file */
3136 is_cgi(cupsd_client_t *con, /* I - Client connection */
3137 const char *filename, /* I - Real filename */
3138 struct stat *filestats, /* I - File information */
3139 mime_type_t *type) /* I - MIME type */
3140 {
3141 const char *options; /* Options on URL */
3142
3143
3144 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3145 "is_cgi(con=%p, filename=\"%s\", filestats=%p, type=%s/%s)\n",
3146 con, filename, filestats, type ? type->super : "unknown",
3147 type ? type->type : "unknown");
3148
3149 /*
3150 * Get the options, if any...
3151 */
3152
3153 if ((options = strchr(con->uri, '?')) != NULL)
3154 options ++;
3155
3156 /*
3157 * Check for known types...
3158 */
3159
3160 if (!type || strcasecmp(type->super, "application"))
3161 {
3162 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3163 return (0);
3164 }
3165
3166 if (!strcasecmp(type->type, "x-httpd-cgi") &&
3167 (filestats->st_mode & 0111))
3168 {
3169 /*
3170 * "application/x-httpd-cgi" is a CGI script.
3171 */
3172
3173 cupsdSetString(&con->command, filename);
3174
3175 filename = strrchr(filename, '/') + 1; /* Filename always absolute */
3176
3177 cupsdSetString(&con->options, options);
3178
3179 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3180 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3181 con->command, con->options);
3182
3183 return (1);
3184 }
3185 #ifdef HAVE_JAVA
3186 else if (!strcasecmp(type->type, "x-httpd-java"))
3187 {
3188 /*
3189 * "application/x-httpd-java" is a Java servlet.
3190 */
3191
3192 cupsdSetString(&con->command, CUPS_JAVA);
3193
3194 if (options)
3195 cupsdSetStringf(&con->options, "%s %s", filename, options);
3196 else
3197 cupsdSetString(&con->options, filename);
3198
3199 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3200 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3201 con->command, con->options);
3202
3203 return (1);
3204 }
3205 #endif /* HAVE_JAVA */
3206 #ifdef HAVE_PERL
3207 else if (!strcasecmp(type->type, "x-httpd-perl"))
3208 {
3209 /*
3210 * "application/x-httpd-perl" is a Perl page.
3211 */
3212
3213 cupsdSetString(&con->command, CUPS_PERL);
3214
3215 if (options)
3216 cupsdSetStringf(&con->options, "%s %s", filename, options);
3217 else
3218 cupsdSetString(&con->options, filename);
3219
3220 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3221 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3222 con->command, con->options);
3223
3224 return (1);
3225 }
3226 #endif /* HAVE_PERL */
3227 #ifdef HAVE_PHP
3228 else if (!strcasecmp(type->type, "x-httpd-php"))
3229 {
3230 /*
3231 * "application/x-httpd-php" is a PHP page.
3232 */
3233
3234 cupsdSetString(&con->command, CUPS_PHP);
3235
3236 if (options)
3237 cupsdSetStringf(&con->options, "%s %s", filename, options);
3238 else
3239 cupsdSetString(&con->options, filename);
3240
3241 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3242 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3243 con->command, con->options);
3244
3245 return (1);
3246 }
3247 #endif /* HAVE_PHP */
3248 #ifdef HAVE_PYTHON
3249 else if (!strcasecmp(type->type, "x-httpd-python"))
3250 {
3251 /*
3252 * "application/x-httpd-python" is a Python page.
3253 */
3254
3255 cupsdSetString(&con->command, CUPS_PYTHON);
3256
3257 if (options)
3258 cupsdSetStringf(&con->options, "%s %s", filename, options);
3259 else
3260 cupsdSetString(&con->options, filename);
3261
3262 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3263 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3264 con->command, con->options);
3265
3266 return (1);
3267 }
3268 #endif /* HAVE_PYTHON */
3269
3270 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3271
3272 return (0);
3273 }
3274
3275
3276 /*
3277 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3278 */
3279
3280 static int /* O - 0 if relative, 1 if absolute */
3281 is_path_absolute(const char *path) /* I - Input path */
3282 {
3283 /*
3284 * Check for a leading slash...
3285 */
3286
3287 if (path[0] != '/')
3288 return (0);
3289
3290 /*
3291 * Check for "/.." in the path...
3292 */
3293
3294 while ((path = strstr(path, "/..")) != NULL)
3295 {
3296 if (!path[3] || path[3] == '/')
3297 return (0);
3298
3299 path ++;
3300 }
3301
3302 /*
3303 * If we haven't found any relative paths, return 1 indicating an
3304 * absolute path...
3305 */
3306
3307 return (1);
3308 }
3309
3310
3311 #ifdef HAVE_GNUTLS
3312 /*
3313 * 'make_certificate()' - Make a self-signed SSL/TLS certificate.
3314 */
3315
3316 static void
3317 make_certificate(void)
3318 {
3319 gnutls_x509_crt crt; /* Self-signed certificate */
3320 gnutls_x509_privkey key; /* Encryption key */
3321 cups_lang_t *language; /* Default language info */
3322 cups_file_t *fp; /* Key/cert file */
3323 unsigned char buffer[8192]; /* Buffer for x509 data */
3324 size_t bytes; /* Number of bytes of data */
3325 unsigned char serial[4]; /* Serial number buffer */
3326 time_t curtime; /* Current time */
3327 int result; /* Result of GNU TLS calls */
3328
3329
3330 /*
3331 * Create the encryption key...
3332 */
3333
3334 cupsdLogMessage(CUPSD_LOG_INFO, "Generating server key...");
3335
3336 gnutls_x509_privkey_init(&key);
3337 gnutls_x509_privkey_generate(key, GNUTLS_PK_RSA, 2048, 0);
3338
3339 /*
3340 * Save it...
3341 */
3342
3343 bytes = sizeof(buffer);
3344
3345 if ((result = gnutls_x509_privkey_export(key, GNUTLS_X509_FMT_PEM,
3346 buffer, &bytes)) < 0)
3347 {
3348 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to export server key - %s",
3349 gnutls_strerror(result));
3350 gnutls_x509_privkey_deinit(key);
3351 return;
3352 }
3353 else if ((fp = cupsFileOpen(ServerKey, "w")) != NULL)
3354 {
3355 cupsFileWrite(fp, (char *)buffer, bytes);
3356 cupsFileClose(fp);
3357
3358 cupsdLogMessage(CUPSD_LOG_INFO, "Created server key file \"%s\"...",
3359 ServerKey);
3360 }
3361 else
3362 {
3363 cupsdLogMessage(CUPSD_LOG_ERROR,
3364 "Unable to create server key file \"%s\" - %s",
3365 ServerKey, strerror(errno));
3366 gnutls_x509_privkey_deinit(key);
3367 return;
3368 }
3369
3370 /*
3371 * Create the self-signed certificate...
3372 */
3373
3374 cupsdLogMessage(CUPSD_LOG_INFO, "Generating self-signed certificate...");
3375
3376 language = cupsLangDefault();
3377 curtime = time(NULL);
3378 serial[0] = curtime >> 24;
3379 serial[1] = curtime >> 16;
3380 serial[2] = curtime >> 8;
3381 serial[3] = curtime;
3382
3383 gnutls_x509_crt_init(&crt);
3384 if (strlen(language->language) == 5)
3385 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3386 language->language + 3, 2);
3387 else
3388 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3389 "US", 2);
3390 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COMMON_NAME, 0,
3391 ServerName, strlen(ServerName));
3392 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
3393 ServerName, strlen(ServerName));
3394 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME,
3395 0, "Unknown", 7);
3396 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0,
3397 "Unknown", 7);
3398 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_LOCALITY_NAME, 0,
3399 "Unknown", 7);
3400 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_PKCS9_EMAIL, 0,
3401 ServerAdmin, strlen(ServerAdmin));
3402 gnutls_x509_crt_set_key(crt, key);
3403 gnutls_x509_crt_set_serial(crt, serial, sizeof(serial));
3404 gnutls_x509_crt_set_activation_time(crt, curtime);
3405 gnutls_x509_crt_set_expiration_time(crt, curtime + 10 * 365 * 86400);
3406 gnutls_x509_crt_set_ca_status(crt, 0);
3407 gnutls_x509_crt_set_subject_alternative_name(crt, GNUTLS_SAN_DNSNAME,
3408 ServerName);
3409 gnutls_x509_crt_set_key_purpose_oid(crt, GNUTLS_KP_TLS_WWW_SERVER, 0);
3410 gnutls_x509_crt_set_key_usage(crt, GNUTLS_KEY_KEY_ENCIPHERMENT);
3411 gnutls_x509_crt_set_version(crt, 3);
3412
3413 bytes = sizeof(buffer);
3414 if (gnutls_x509_crt_get_key_id(crt, 0, buffer, &bytes) >= 0)
3415 gnutls_x509_crt_set_subject_key_id(crt, buffer, bytes);
3416
3417 gnutls_x509_crt_sign(crt, crt, key);
3418
3419 /*
3420 * Save it...
3421 */
3422
3423 bytes = sizeof(buffer);
3424 if ((result = gnutls_x509_crt_export(crt, GNUTLS_X509_FMT_PEM,
3425 buffer, &bytes)) < 0)
3426 cupsdLogMessage(CUPSD_LOG_ERROR,
3427 "Unable to export server certificate - %s",
3428 gnutls_strerror(result));
3429 else if ((fp = cupsFileOpen(ServerCertificate, "w")) != NULL)
3430 {
3431 cupsFileWrite(fp, (char *)buffer, bytes);
3432 cupsFileClose(fp);
3433
3434 cupsdLogMessage(CUPSD_LOG_INFO,
3435 "Created 10-year server certificate file \"%s\"...",
3436 ServerCertificate);
3437 }
3438 else
3439 cupsdLogMessage(CUPSD_LOG_ERROR,
3440 "Unable to create server certificate file \"%s\" - %s",
3441 ServerCertificate, strerror(errno));
3442
3443 /*
3444 * Cleanup...
3445 */
3446
3447 gnutls_x509_crt_deinit(crt);
3448 gnutls_x509_privkey_deinit(key);
3449 }
3450 #endif /* HAVE_GNUTLS */
3451
3452
3453 /*
3454 * 'pipe_command()' - Pipe the output of a command to the remote client.
3455 */
3456
3457 static int /* O - Process ID */
3458 pipe_command(cupsd_client_t *con, /* I - Client connection */
3459 int infile, /* I - Standard input for command */
3460 int *outfile, /* O - Standard output for command */
3461 char *command, /* I - Command to run */
3462 char *options, /* I - Options for command */
3463 int root) /* I - Run as root? */
3464 {
3465 int i; /* Looping var */
3466 int pid; /* Process ID */
3467 char *commptr, /* Command string pointer */
3468 commch; /* Command string character */
3469 char *uriptr; /* URI string pointer */
3470 int fds[2]; /* Pipe FDs */
3471 int argc; /* Number of arguments */
3472 int envc; /* Number of environment variables */
3473 char argbuf[10240], /* Argument buffer */
3474 *argv[100], /* Argument strings */
3475 *envp[MAX_ENV + 17]; /* Environment variables */
3476 char content_length[1024], /* CONTENT_LENGTH environment variable */
3477 content_type[1024], /* CONTENT_TYPE environment variable */
3478 http_cookie[32768], /* HTTP_COOKIE environment variable */
3479 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3480 lang[1024], /* LANG environment variable */
3481 path_info[1024], /* PATH_INFO environment variable */
3482 *query_string, /* QUERY_STRING env variable */
3483 remote_addr[1024], /* REMOTE_ADDR environment variable */
3484 remote_host[1024], /* REMOTE_HOST environment variable */
3485 remote_user[1024], /* REMOTE_USER environment variable */
3486 script_name[1024], /* SCRIPT_NAME environment variable */
3487 server_name[1024], /* SERVER_NAME environment variable */
3488 server_port[1024]; /* SERVER_PORT environment variable */
3489
3490
3491 /*
3492 * Parse a copy of the options string, which is of the form:
3493 *
3494 * argument+argument+argument
3495 * ?argument+argument+argument
3496 * param=value&param=value
3497 * ?param=value&param=value
3498 * /name?argument+argument+argument
3499 * /name?param=value&param=value
3500 *
3501 * If the string contains an "=" character after the initial name,
3502 * then we treat it as a HTTP GET form request and make a copy of
3503 * the remaining string for the environment variable.
3504 *
3505 * The string is always parsed out as command-line arguments, to
3506 * be consistent with Apache...
3507 */
3508
3509 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3510 "pipe_command: command=\"%s\", options=\"%s\"",
3511 command, options ? options : "(null)");
3512
3513 argv[0] = command;
3514 query_string = NULL;
3515
3516 if (options)
3517 strlcpy(argbuf, options, sizeof(argbuf));
3518 else
3519 argbuf[0] = '\0';
3520
3521 if (argbuf[0] == '/')
3522 {
3523 /*
3524 * Found some trailing path information, set PATH_INFO...
3525 */
3526
3527 if ((commptr = strchr(argbuf, '?')) == NULL)
3528 commptr = argbuf + strlen(argbuf);
3529
3530 commch = *commptr;
3531 *commptr = '\0';
3532 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
3533 *commptr = commch;
3534 }
3535 else
3536 {
3537 commptr = argbuf;
3538 path_info[0] = '\0';
3539 }
3540
3541 if (*commptr == '?' && con->operation == HTTP_GET)
3542 {
3543 commptr ++;
3544 cupsdSetStringf(&query_string, "QUERY_STRING=%s", commptr);
3545 }
3546
3547 argc = 1;
3548
3549 if (*commptr)
3550 {
3551 argv[argc ++] = commptr;
3552
3553 for (; *commptr && argc < 99; commptr ++)
3554 {
3555 /*
3556 * Break arguments whenever we see a + or space...
3557 */
3558
3559 if (*commptr == ' ' || *commptr == '+')
3560 {
3561 while (*commptr == ' ' || *commptr == '+')
3562 *commptr++ = '\0';
3563
3564 /*
3565 * If we don't have a blank string, save it as another argument...
3566 */
3567
3568 if (*commptr)
3569 {
3570 argv[argc] = commptr;
3571 argc ++;
3572 }
3573 else
3574 break;
3575 }
3576 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
3577 isxdigit(commptr[2] & 255))
3578 {
3579 /*
3580 * Convert the %xx notation to the individual character.
3581 */
3582
3583 if (commptr[1] >= '0' && commptr[1] <= '9')
3584 *commptr = (commptr[1] - '0') << 4;
3585 else
3586 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
3587
3588 if (commptr[2] >= '0' && commptr[2] <= '9')
3589 *commptr |= commptr[2] - '0';
3590 else
3591 *commptr |= tolower(commptr[2]) - 'a' + 10;
3592
3593 _cups_strcpy(commptr + 1, commptr + 3);
3594
3595 /*
3596 * Check for a %00 and break if that is the case...
3597 */
3598
3599 if (!*commptr)
3600 break;
3601 }
3602 }
3603 }
3604
3605 argv[argc] = NULL;
3606
3607 /*
3608 * Setup the environment variables as needed...
3609 */
3610
3611 if (con->language)
3612 snprintf(lang, sizeof(lang), "LANG=%s.UTF-8", con->language->language);
3613 else
3614 strcpy(lang, "LANG=C");
3615
3616 strcpy(remote_addr, "REMOTE_ADDR=");
3617 httpAddrString(con->http.hostaddr, remote_addr + 12,
3618 sizeof(remote_addr) - 12);
3619
3620 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
3621 con->http.hostname);
3622
3623 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
3624 if ((uriptr = strchr(script_name, '?')) != NULL)
3625 *uriptr = '\0';
3626
3627 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
3628
3629 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3630 con->servername);
3631
3632 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
3633
3634 envp[envc ++] = lang;
3635 envp[envc ++] = "REDIRECT_STATUS=1";
3636 envp[envc ++] = server_name;
3637 envp[envc ++] = server_port;
3638 envp[envc ++] = remote_addr;
3639 envp[envc ++] = remote_host;
3640 envp[envc ++] = script_name;
3641
3642 if (path_info[0])
3643 envp[envc ++] = path_info;
3644
3645 if (con->username[0])
3646 {
3647 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
3648
3649 envp[envc ++] = remote_user;
3650 }
3651
3652 if (con->http.version == HTTP_1_1)
3653 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
3654 else if (con->http.version == HTTP_1_0)
3655 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
3656 else
3657 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
3658
3659 if (con->http.cookie)
3660 {
3661 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
3662 con->http.cookie);
3663 envp[envc ++] = http_cookie;
3664 }
3665
3666 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
3667 {
3668 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
3669 con->http.fields[HTTP_FIELD_USER_AGENT]);
3670 envp[envc ++] = http_user_agent;
3671 }
3672
3673 if (con->operation == HTTP_GET)
3674 {
3675 for (i = 0; i < argc; i ++)
3676 cupsdLogMessage(CUPSD_LOG_DEBUG2, "argv[%d] = \"%s\"", i, argv[i]);
3677
3678 envp[envc ++] = "REQUEST_METHOD=GET";
3679
3680 if (query_string)
3681 {
3682 /*
3683 * Add GET form variables after ?...
3684 */
3685
3686 envp[envc ++] = query_string;
3687 }
3688 }
3689 else
3690 {
3691 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
3692 CUPS_LLCAST con->bytes);
3693 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
3694 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
3695
3696 envp[envc ++] = "REQUEST_METHOD=POST";
3697 envp[envc ++] = content_length;
3698 envp[envc ++] = content_type;
3699 }
3700
3701 /*
3702 * Tell the CGI if we are using encryption...
3703 */
3704
3705 if (con->http.tls)
3706 envp[envc ++] = "HTTPS=ON";
3707
3708 /*
3709 * Terminate the environment array...
3710 */
3711
3712 envp[envc] = NULL;
3713
3714 if (LogLevel == CUPSD_LOG_DEBUG2)
3715 {
3716 for (i = 0; i < argc; i ++)
3717 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3718 "pipe_command: argv[%d] = \"%s\"", i, argv[i]);
3719 for (i = 0; i < envc; i ++)
3720 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3721 "pipe_command: envp[%d] = \"%s\"", i, envp[i]);
3722 }
3723
3724 /*
3725 * Create a pipe for the output...
3726 */
3727
3728 if (cupsdOpenPipe(fds))
3729 {
3730 cupsdClearString(&query_string);
3731
3732 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create pipes for CGI %s - %s",
3733 argv[0], strerror(errno));
3734 return (0);
3735 }
3736
3737 /*
3738 * Then execute the command...
3739 */
3740
3741 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
3742 -1, root, &pid) < 0)
3743 {
3744 /*
3745 * Error - can't fork!
3746 */
3747
3748 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to fork for CGI %s - %s", argv[0],
3749 strerror(errno));
3750
3751 cupsdClosePipe(fds);
3752 pid = 0;
3753 }
3754 else
3755 {
3756 /*
3757 * Fork successful - return the PID...
3758 */
3759
3760 if (con->username[0])
3761 cupsdAddCert(pid, con->username);
3762
3763 cupsdLogMessage(CUPSD_LOG_DEBUG, "CGI %s started - PID = %d", command, pid);
3764
3765 *outfile = fds[0];
3766 close(fds[1]);
3767 }
3768
3769 cupsdClearString(&query_string);
3770
3771 return (pid);
3772 }
3773
3774
3775 /*
3776 * 'write_file()' - Send a file via HTTP.
3777 */
3778
3779 static int /* O - 0 on failure, 1 on success */
3780 write_file(cupsd_client_t *con, /* I - Client connection */
3781 http_status_t code, /* I - HTTP status */
3782 char *filename, /* I - Filename */
3783 char *type, /* I - File type */
3784 struct stat *filestats) /* O - File information */
3785 {
3786 con->file = open(filename, O_RDONLY);
3787
3788 cupsdLogMessage(CUPSD_LOG_DEBUG, "write_file: %d file=%d", con->http.fd,
3789 con->file);
3790
3791 if (con->file < 0)
3792 return (0);
3793
3794 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
3795
3796 con->pipe_pid = 0;
3797
3798 if (!cupsdSendHeader(con, code, type))
3799 return (0);
3800
3801 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
3802 httpGetDateString(filestats->st_mtime)) < 0)
3803 return (0);
3804 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
3805 CUPS_LLCAST filestats->st_size) < 0)
3806 return (0);
3807 if (httpPrintf(HTTP(con), "\r\n") < 0)
3808 return (0);
3809
3810 con->http.data_encoding = HTTP_ENCODE_LENGTH;
3811 con->http.data_remaining = filestats->st_size;
3812
3813 if (con->http.data_remaining <= INT_MAX)
3814 con->http._data_remaining = con->http.data_remaining;
3815 else
3816 con->http._data_remaining = INT_MAX;
3817
3818 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3819 "write_file: Adding fd %d to OutputSet...", con->http.fd);
3820
3821 FD_SET(con->http.fd, OutputSet);
3822
3823 return (1);
3824 }
3825
3826
3827 /*
3828 * End of "$Id: client.c 5567 2006-05-22 15:33:11Z mike $".
3829 */
Unnamed repository; edit this file 'description' to name the repository.