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[thirdparty/cups.git] / scheduler / client.c
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ef416fc2 1/*
80ca4592 2 * "$Id: client.c 5335 2006-03-24 02:56:20Z mike $"
ef416fc2 3 *
4 * Client routines for the Common UNIX Printing System (CUPS) scheduler.
5 *
6 * Copyright 1997-2006 by Easy Software Products, all rights reserved.
7 *
8 * These coded instructions, statements, and computer programs are the
9 * property of Easy Software Products and are protected by Federal
10 * copyright law. Distribution and use rights are outlined in the file
11 * "LICENSE.txt" which should have been included with this file. If this
12 * file is missing or damaged please contact Easy Software Products
13 * at:
14 *
15 * Attn: CUPS Licensing Information
16 * Easy Software Products
17 * 44141 Airport View Drive, Suite 204
18 * Hollywood, Maryland 20636 USA
19 *
20 * Voice: (301) 373-9600
21 * EMail: cups-info@cups.org
22 * WWW: http://www.cups.org
23 *
24 * Contents:
25 *
26 * cupsdAcceptClient() - Accept a new client.
27 * cupsdCloseAllClients() - Close all remote clients immediately.
28 * cupsdCloseClient() - Close a remote client.
ef416fc2 29 * cupsdReadClient() - Read data from a client.
30 * cupsdSendCommand() - Send output from a command via HTTP.
31 * cupsdSendError() - Send an error message via HTTP.
ef416fc2 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.
e1d6a774 36 * encrypt_client() - Enable encryption for the client...
ef416fc2 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.
e1d6a774 41 * is_cgi() - Is the resource a CGI script/program?
ef416fc2 42 * is_path_absolute() - Is a path absolute and free of relative elements.
4744bd90 43 * make_certificate() - Make a self-signed SSL/TLS certificate.
ef416fc2 44 * pipe_command() - Pipe the output of a command to the remote client.
e1d6a774 45 * send_file() - Send a file via HTTP.
ef416fc2 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 */
4744bd90 58#ifdef HAVE_GNUTLS
59# include <gnutls/x509.h>
60#endif /* HAVE_GNUTLS */
ef416fc2 61
62
63/*
64 * Local functions...
65 */
66
67static int check_if_modified(cupsd_client_t *con,
68 struct stat *filestats);
80ca4592 69#ifdef HAVE_SSL
e1d6a774 70static int encrypt_client(cupsd_client_t *con);
80ca4592 71#endif /* HAVE_SSL */
ef416fc2 72#ifdef HAVE_CDSASSL
73static CFArrayRef get_cdsa_server_certs(void);
74#endif /* HAVE_CDSASSL */
75static char *get_file(cupsd_client_t *con, struct stat *filestats,
76 char *filename, int len);
77static http_status_t install_conf_file(cupsd_client_t *con);
e1d6a774 78static int is_cgi(cupsd_client_t *con, const char *filename,
79 struct stat *filestats, mime_type_t *type);
ef416fc2 80static int is_path_absolute(const char *path);
4744bd90 81#ifdef HAVE_GNUTLS
82static void make_certificate(void);
83#endif /* HAVE_GNUTLS */
ef416fc2 84static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
85 char *command, char *options, int root);
e1d6a774 86static int send_file(cupsd_client_t *con, http_status_t code,
87 char *filename, char *type,
88 struct stat *filestats);
ef416fc2 89
90
91/*
92 * 'cupsdAcceptClient()' - Accept a new client.
93 */
94
95void
96cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
97{
ef416fc2 98 int count; /* Count of connections on a host */
99 int val; /* Parameter value */
bd7854cb 100 cupsd_client_t *con, /* New client pointer */
101 *tempcon; /* Temporary client pointer */
ef416fc2 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,
bd7854cb 111 "cupsdAcceptClient(lis=%p) %d Clients = %d",
112 lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 113
114 /*
115 * Make sure we don't have a full set of clients already...
116 */
117
bd7854cb 118 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 119 return;
120
121 /*
122 * Get a pointer to the next available client...
123 */
124
bd7854cb 125 if (!Clients)
126 Clients = cupsArrayNew(NULL, NULL);
127
128 if (!Clients)
129 return;
130
131 con = calloc(1, sizeof(cupsd_client_t));
ef416fc2 132
ef416fc2 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));
bd7854cb 148 free(con);
ef416fc2 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
bd7854cb 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))
ef416fc2 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,
bd7854cb 196 "Possible DoS attack - more than %d clients connecting "
197 "from %s!",
198 MaxClientsPerHost, tempcon->http.hostname);
ef416fc2 199 }
200
201#ifdef WIN32
202 closesocket(con->http.fd);
203#else
204 close(con->http.fd);
205#endif /* WIN32 */
206
bd7854cb 207 free(con);
ef416fc2 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);
bd7854cb 269
270 free(con);
ef416fc2 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);
bd7854cb 315 free(con);
ef416fc2 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
bd7854cb 372 cupsArrayAdd(Clients, con);
373
ef416fc2 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
ef416fc2 403 /*
404 * Temporarily suspend accept()'s until we lose a client...
405 */
406
bd7854cb 407 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 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
e1d6a774 423 encrypt_client(con);
ef416fc2 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
435void
436cupsdCloseAllClients(void)
437{
bd7854cb 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);
ef416fc2 445}
446
447
448/*
449 * 'cupsdCloseClient()' - Close a remote client.
450 */
451
452int /* O - 1 if partial close, 0 if fully closed */
453cupsdCloseClient(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#endif /* HAVE_LIBSSL */
466
467
468 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdCloseClient: %d", con->http.fd);
469
470 /*
471 * Flush pending writes before closing...
472 */
473
474 httpFlushWrite(HTTP(con));
475
476 partial = 0;
477
478#ifdef HAVE_SSL
479 /*
480 * Shutdown encryption as needed...
481 */
482
483 if (con->http.tls)
484 {
485 partial = 1;
486
487# ifdef HAVE_LIBSSL
488 conn = (SSL *)(con->http.tls);
489 context = SSL_get_SSL_CTX(conn);
490
491 switch (SSL_shutdown(conn))
492 {
493 case 1 :
494 cupsdLogMessage(CUPSD_LOG_INFO,
495 "cupsdCloseClient: SSL shutdown successful!");
496 break;
497 case -1 :
498 cupsdLogMessage(CUPSD_LOG_ERROR,
499 "cupsdCloseClient: Fatal error during SSL shutdown!");
500 default :
501 while ((error = ERR_get_error()) != 0)
502 cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdCloseClient: %s",
503 ERR_error_string(error, NULL));
504 break;
505 }
506
507 SSL_CTX_free(context);
508 SSL_free(conn);
509
510# elif defined(HAVE_GNUTLS)
511 conn = (http_tls_t *)(con->http.tls);
512 credentials = (gnutls_certificate_server_credentials *)(conn->credentials);
513
514 error = gnutls_bye(conn->session, GNUTLS_SHUT_WR);
515 switch (error)
516 {
517 case GNUTLS_E_SUCCESS:
518 cupsdLogMessage(CUPSD_LOG_INFO,
519 "cupsdCloseClient: SSL shutdown successful!");
520 break;
521 default:
522 cupsdLogMessage(CUPSD_LOG_ERROR,
523 "cupsdCloseClient: %s", gnutls_strerror(error));
524 break;
525 }
526
527 gnutls_deinit(conn->session);
528 gnutls_certificate_free_credentials(*credentials);
529 free(credentials);
530 free(conn);
531
532# elif defined(HAVE_CDSASSL)
b423cd4c 533 while (SSLClose((SSLContextRef)con->http.tls) == errSSLWouldBlock)
534 usleep(1000);
535
ef416fc2 536 SSLDisposeContext((SSLContextRef)con->http.tls);
537# endif /* HAVE_LIBSSL */
538
539 con->http.tls = NULL;
540 }
541#endif /* HAVE_SSL */
542
543 if (con->pipe_pid != 0)
544 {
545 /*
546 * Stop any CGI process...
547 */
548
549 cupsdLogMessage(CUPSD_LOG_DEBUG2,
550 "cupsdCloseClient: %d Killing process ID %d...",
551 con->http.fd, con->pipe_pid);
552 cupsdEndProcess(con->pipe_pid, 1);
553 con->pipe_pid = 0;
554 }
555
556 if (con->file >= 0)
557 {
558 if (FD_ISSET(con->file, InputSet))
559 {
560 cupsdLogMessage(CUPSD_LOG_DEBUG2,
561 "cupsdCloseClient: %d Removing fd %d from InputSet...",
562 con->http.fd, con->file);
563 FD_CLR(con->file, InputSet);
564 }
565
566 cupsdLogMessage(CUPSD_LOG_DEBUG2,
567 "cupsdCloseClient: %d Closing data file %d.",
568 con->http.fd, con->file);
569
570 close(con->file);
571 con->file = -1;
572 }
573
574 /*
575 * Close the socket and clear the file from the input set for select()...
576 */
577
578 if (con->http.fd > 0)
579 {
580 if (partial)
581 {
582 /*
583 * Only do a partial close so that the encrypted client gets everything.
584 */
585
586 cupsdLogMessage(CUPSD_LOG_DEBUG2,
587 "cupsdCloseClient: Removing fd %d from OutputSet...",
588 con->http.fd);
589 shutdown(con->http.fd, 0);
590 FD_CLR(con->http.fd, OutputSet);
591 }
592 else
593 {
594 /*
595 * Shut the socket down fully...
596 */
597
598 cupsdLogMessage(CUPSD_LOG_DEBUG2,
599 "cupsdCloseClient: Removing fd %d from InputSet and OutputSet...",
600 con->http.fd);
601 close(con->http.fd);
602 FD_CLR(con->http.fd, InputSet);
603 FD_CLR(con->http.fd, OutputSet);
604 con->http.fd = -1;
605 }
606 }
607
608 if (!partial)
609 {
610 /*
611 * Free memory...
612 */
613
614 if (con->http.input_set)
615 free(con->http.input_set);
616
617 httpClearCookie(HTTP(con));
618
619 cupsdClearString(&con->filename);
620 cupsdClearString(&con->command);
621 cupsdClearString(&con->options);
622
623 if (con->request)
624 {
625 ippDelete(con->request);
626 con->request = NULL;
627 }
628
629 if (con->response)
630 {
631 ippDelete(con->response);
632 con->response = NULL;
633 }
634
635 if (con->language)
636 {
637 cupsLangFree(con->language);
638 con->language = NULL;
639 }
640
641 /*
642 * Re-enable new client connections if we are going back under the
643 * limit...
644 */
645
bd7854cb 646 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 647 cupsdResumeListening();
648
649 /*
650 * Compact the list of clients as necessary...
651 */
652
bd7854cb 653 cupsArrayRemove(Clients, con);
ef416fc2 654
bd7854cb 655 free(con);
ef416fc2 656 }
657
658 return (partial);
659}
660
661
ef416fc2 662/*
663 * 'cupsdReadClient()' - Read data from a client.
664 */
665
666int /* O - 1 on success, 0 on error */
667cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
668{
669 char line[32768], /* Line from client... */
670 operation[64], /* Operation code from socket */
671 version[64], /* HTTP version number string */
672 locale[64], /* Locale */
673 *ptr; /* Pointer into strings */
674 int major, minor; /* HTTP version numbers */
675 http_status_t status; /* Transfer status */
676 ipp_state_t ipp_state; /* State of IPP transfer */
677 int bytes; /* Number of bytes to POST */
678 char *filename; /* Name of file for GET/HEAD */
679 char buf[1024]; /* Buffer for real filename */
680 struct stat filestats; /* File information */
681 mime_type_t *type; /* MIME type of file */
682 cupsd_printer_t *p; /* Printer */
683 static unsigned request_id = 0; /* Request ID for temp files */
684
685
686 status = HTTP_CONTINUE;
687
688 cupsdLogMessage(CUPSD_LOG_DEBUG2,
689 "cupsdReadClient: %d, used=%d, file=%d state=%d",
690 con->http.fd, con->http.used, con->file, con->http.state);
691
692 if (con->http.error)
693 {
694 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: http error seen...");
695 return (cupsdCloseClient(con));
696 }
697
698#ifdef HAVE_SSL
699 if (con->auto_ssl)
700 {
701 /*
702 * Automatically check for a SSL/TLS handshake...
703 */
704
705 con->auto_ssl = 0;
706
707 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
708 (!buf[0] || !strchr("DGHOPT", buf[0])))
709 {
710 /*
711 * Encrypt this connection...
712 */
713
714 cupsdLogMessage(CUPSD_LOG_DEBUG2,
715 "cupsdReadClient: Saw first byte %02X, auto-negotiating SSL/TLS session...",
716 buf[0] & 255);
717
e1d6a774 718 encrypt_client(con);
ef416fc2 719 return (1);
720 }
721 }
722#endif /* HAVE_SSL */
723
724 switch (con->http.state)
725 {
726 case HTTP_WAITING :
727 /*
728 * See if we've received a request line...
729 */
730
731 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
732 {
733 cupsdLogMessage(CUPSD_LOG_DEBUG2,
734 "cupsdReadClient: httpGets returned EOF...");
735 return (cupsdCloseClient(con));
736 }
737
738 /*
739 * Ignore blank request lines...
740 */
741
742 if (line[0] == '\0')
743 break;
744
745 /*
746 * Clear other state variables...
747 */
748
749 httpClearFields(HTTP(con));
750
751 con->http.activity = time(NULL);
752 con->http.version = HTTP_1_0;
753 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
754 con->http.data_encoding = HTTP_ENCODE_LENGTH;
755 con->http.data_remaining = 0;
756 con->http._data_remaining = 0;
757 con->operation = HTTP_WAITING;
758 con->bytes = 0;
759 con->file = -1;
760 con->file_ready = 0;
761 con->pipe_pid = 0;
762 con->username[0] = '\0';
763 con->password[0] = '\0';
764 con->uri[0] = '\0';
765
766 cupsdClearString(&con->command);
767 cupsdClearString(&con->options);
768
769 if (con->language != NULL)
770 {
771 cupsLangFree(con->language);
772 con->language = NULL;
773 }
774
775 /*
776 * Grab the request line...
777 */
778
779 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
780 {
781 case 1 :
782 cupsdLogMessage(CUPSD_LOG_ERROR,
783 "Bad request line \"%s\" from %s!", line,
784 con->http.hostname);
785 cupsdSendError(con, HTTP_BAD_REQUEST);
786 return (cupsdCloseClient(con));
787 case 2 :
788 con->http.version = HTTP_0_9;
789 break;
790 case 3 :
791 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
792 {
793 cupsdLogMessage(CUPSD_LOG_ERROR,
794 "Bad request line \"%s\" from %s!", line,
795 con->http.hostname);
796 cupsdSendError(con, HTTP_BAD_REQUEST);
797 return (cupsdCloseClient(con));
798 }
799
800 if (major < 2)
801 {
802 con->http.version = (http_version_t)(major * 100 + minor);
803 if (con->http.version == HTTP_1_1 && KeepAlive)
804 con->http.keep_alive = HTTP_KEEPALIVE_ON;
805 else
806 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
807 }
808 else
809 {
810 cupsdSendError(con, HTTP_NOT_SUPPORTED);
811 return (cupsdCloseClient(con));
812 }
813 break;
814 }
815
816 /*
817 * Handle full URLs in the request line...
818 */
819
820 if (strcmp(con->uri, "*"))
821 {
822 char method[HTTP_MAX_URI], /* Method/scheme */
823 userpass[HTTP_MAX_URI], /* Username:password */
824 hostname[HTTP_MAX_URI], /* Hostname */
825 resource[HTTP_MAX_URI]; /* Resource path */
826 int port; /* Port number */
827
828
829 /*
830 * Separate the URI into its components...
831 */
832
a4d04587 833 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
834 method, sizeof(method),
ef416fc2 835 userpass, sizeof(userpass),
836 hostname, sizeof(hostname), &port,
837 resource, sizeof(resource));
838
839 /*
840 * Only allow URIs with the servername, localhost, or an IP
841 * address...
842 */
843
844 if (strcmp(method, "file") &&
845 strcasecmp(hostname, ServerName) &&
846 strcasecmp(hostname, "localhost") &&
847 !isdigit(hostname[0]))
848 {
849 /*
850 * Nope, we don't do proxies...
851 */
852
853 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad URI \"%s\" in request!",
854 con->uri);
855 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED);
856 return (cupsdCloseClient(con));
857 }
858
859 /*
860 * Copy the resource portion back into the URI; both resource and
861 * con->uri are HTTP_MAX_URI bytes in size...
862 */
863
864 strcpy(con->uri, resource);
865 }
866
867 /*
868 * Process the request...
869 */
870
871 if (!strcmp(operation, "GET"))
872 con->http.state = HTTP_GET;
873 else if (!strcmp(operation, "PUT"))
874 con->http.state = HTTP_PUT;
875 else if (!strcmp(operation, "POST"))
876 con->http.state = HTTP_POST;
877 else if (!strcmp(operation, "DELETE"))
878 con->http.state = HTTP_DELETE;
879 else if (!strcmp(operation, "TRACE"))
880 con->http.state = HTTP_TRACE;
881 else if (!strcmp(operation, "OPTIONS"))
882 con->http.state = HTTP_OPTIONS;
883 else if (!strcmp(operation, "HEAD"))
884 con->http.state = HTTP_HEAD;
885 else
886 {
887 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad operation \"%s\"!", operation);
888 cupsdSendError(con, HTTP_BAD_REQUEST);
889 return (cupsdCloseClient(con));
890 }
891
892 con->start = time(NULL);
893 con->operation = con->http.state;
894
895 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %s %s HTTP/%d.%d", con->http.fd,
896 operation, con->uri,
897 con->http.version / 100, con->http.version % 100);
898
899 con->http.status = HTTP_OK;
900
901 case HTTP_OPTIONS :
902 case HTTP_DELETE :
903 case HTTP_GET :
904 case HTTP_HEAD :
905 case HTTP_POST :
906 case HTTP_PUT :
907 case HTTP_TRACE :
908 /*
909 * Parse incoming parameters until the status changes...
910 */
911
912 status = httpUpdate(HTTP(con));
913
914 if (status != HTTP_OK && status != HTTP_CONTINUE)
915 {
916 cupsdSendError(con, HTTP_BAD_REQUEST);
917 return (cupsdCloseClient(con));
918 }
919 break;
920
921 default :
922 break; /* Anti-compiler-warning-code */
923 }
924
925 /*
926 * Handle new transfers...
927 */
928
929 if (status == HTTP_OK)
930 {
931 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
932 {
933 /*
934 * Figure out the locale from the Accept-Language and Content-Type
935 * fields...
936 */
937
938 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ',')) != NULL)
939 *ptr = '\0';
940
941 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ';')) != NULL)
942 *ptr = '\0';
943
944 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE], "charset=")) != NULL)
945 {
946 /*
947 * Combine language and charset, and trim any extra params in the
948 * content-type.
949 */
950
951 snprintf(locale, sizeof(locale), "%s.%s",
952 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
953
954 if ((ptr = strchr(locale, ',')) != NULL)
955 *ptr = '\0';
956 }
957 else
958 snprintf(locale, sizeof(locale), "%s.%s",
959 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], DefaultCharset);
960
961 con->language = cupsLangGet(locale);
962 }
963 else
964 con->language = cupsLangGet(DefaultLocale);
965
966 cupsdAuthorize(con);
967
968 if (!strncmp(con->http.fields[HTTP_FIELD_CONNECTION], "Keep-Alive", 10) &&
969 KeepAlive)
970 con->http.keep_alive = HTTP_KEEPALIVE_ON;
971
972 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
973 con->http.version >= HTTP_1_1)
974 {
975 /*
976 * HTTP/1.1 and higher require the "Host:" field...
977 */
978
979 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
980 return (cupsdCloseClient(con));
981 }
982 else if (con->operation == HTTP_OPTIONS)
983 {
984 /*
985 * Do OPTIONS command...
986 */
987
988 if (con->best && con->best->type != AUTH_NONE)
989 {
990 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL))
991 return (cupsdCloseClient(con));
992 }
993
994 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
995 con->http.tls == NULL)
996 {
997#ifdef HAVE_SSL
998 /*
999 * Do encryption stuff...
1000 */
1001
1002 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1003 return (cupsdCloseClient(con));
1004
1005 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1006 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1007 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1008 httpPrintf(HTTP(con), "\r\n");
1009
e1d6a774 1010 encrypt_client(con);
ef416fc2 1011#else
1012 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1013 return (cupsdCloseClient(con));
1014#endif /* HAVE_SSL */
1015 }
1016
ef416fc2 1017 if (!cupsdSendHeader(con, HTTP_OK, NULL))
1018 return (cupsdCloseClient(con));
1019
1020 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1021 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1022 httpPrintf(HTTP(con), "\r\n");
1023 }
1024 else if (!is_path_absolute(con->uri))
1025 {
1026 /*
1027 * Protect against malicious users!
1028 */
1029
1030 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1031 return (cupsdCloseClient(con));
1032 }
1033 else
1034 {
1035 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1036 con->http.tls == NULL)
1037 {
1038#ifdef HAVE_SSL
1039 /*
1040 * Do encryption stuff...
1041 */
1042
1043 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1044 return (cupsdCloseClient(con));
1045
1046 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1047 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1048 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1049 httpPrintf(HTTP(con), "\r\n");
1050
e1d6a774 1051 encrypt_client(con);
ef416fc2 1052#else
1053 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1054 return (cupsdCloseClient(con));
1055#endif /* HAVE_SSL */
1056 }
1057
1058 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1059 {
1060 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1061 "cupsdReadClient: Unauthorized request for %s...\n",
1062 con->uri);
1063 cupsdSendError(con, status);
1064 return (cupsdCloseClient(con));
1065 }
1066
b423cd4c 1067 if (con->http.expect &&
1068 (con->operation == HTTP_POST || con->operation == HTTP_PUT))
ef416fc2 1069 {
b423cd4c 1070 if (con->http.expect == HTTP_CONTINUE)
1071 {
1072 /*
1073 * Send 100-continue header...
1074 */
1075
1076 if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL))
1077 return (cupsdCloseClient(con));
1078 }
1079 else
1080 {
1081 /*
1082 * Send 417-expectation-failed header...
1083 */
1084
1085 if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL))
1086 return (cupsdCloseClient(con));
1087
1088 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1089 httpPrintf(HTTP(con), "\r\n");
1090 }
ef416fc2 1091 }
1092
1093 switch (con->http.state)
1094 {
1095 case HTTP_GET_SEND :
1096 if (!strncmp(con->uri, "/printers/", 10) &&
1097 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1098 {
1099 /*
1100 * Send PPD file - get the real printer name since printer
1101 * names are not case sensitive but filenames can be...
1102 */
1103
1104 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1105
1106 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1107 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1108 else
1109 {
1110 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1111 return (cupsdCloseClient(con));
1112
1113 break;
1114 }
1115 }
1116
1117 if ((!strncmp(con->uri, "/admin", 6) &&
1118 strncmp(con->uri, "/admin/conf/", 12) &&
1119 strncmp(con->uri, "/admin/log/", 11)) ||
1120 !strncmp(con->uri, "/printers", 9) ||
1121 !strncmp(con->uri, "/classes", 8) ||
1122 !strncmp(con->uri, "/help", 5) ||
1123 !strncmp(con->uri, "/jobs", 5))
1124 {
1125 /*
1126 * Send CGI output...
1127 */
1128
1129 if (!strncmp(con->uri, "/admin", 6))
1130 {
1131 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1132 ServerBin);
1133
b423cd4c 1134 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1135 }
1136 else if (!strncmp(con->uri, "/printers", 9))
1137 {
1138 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1139 ServerBin);
b423cd4c 1140
1141 if (con->uri[9] && con->uri[10])
1142 cupsdSetString(&con->options, con->uri + 9);
1143 else
1144 cupsdSetString(&con->options, NULL);
ef416fc2 1145 }
1146 else if (!strncmp(con->uri, "/classes", 8))
1147 {
1148 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1149 ServerBin);
b423cd4c 1150
1151 if (con->uri[8] && con->uri[9])
1152 cupsdSetString(&con->options, con->uri + 8);
1153 else
1154 cupsdSetString(&con->options, NULL);
ef416fc2 1155 }
1156 else if (!strncmp(con->uri, "/jobs", 5))
1157 {
1158 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1159 ServerBin);
b423cd4c 1160
1161 if (con->uri[5] && con->uri[6])
1162 cupsdSetString(&con->options, con->uri + 5);
1163 else
1164 cupsdSetString(&con->options, NULL);
ef416fc2 1165 }
1166 else
1167 {
1168 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1169 ServerBin);
ef416fc2 1170
b423cd4c 1171 if (con->uri[5] && con->uri[6])
1172 cupsdSetString(&con->options, con->uri + 5);
1173 else
1174 cupsdSetString(&con->options, NULL);
1175 }
ef416fc2 1176
1177 if (!cupsdSendCommand(con, con->command, con->options, 0))
1178 {
1179 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1180 return (cupsdCloseClient(con));
1181 }
1182 else
1183 cupsdLogRequest(con, HTTP_OK);
1184
1185 if (con->http.version <= HTTP_1_0)
1186 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1187 }
1188 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1189 (strchr(con->uri + 12, '/') ||
1190 strlen(con->uri) == 12)) ||
1191 (!strncmp(con->uri, "/admin/log/", 11) &&
1192 (strchr(con->uri + 11, '/') ||
1193 strlen(con->uri) == 11)))
1194 {
1195 /*
1196 * GET can only be done to configuration files under
1197 * /admin/conf...
1198 */
1199
1200 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1201 return (cupsdCloseClient(con));
1202
1203 break;
1204 }
1205 else
1206 {
1207 /*
1208 * Serve a file...
1209 */
1210
1211 if ((filename = get_file(con, &filestats, buf,
1212 sizeof(buf))) == NULL)
1213 {
1214 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1215 return (cupsdCloseClient(con));
1216
1217 break;
1218 }
1219
4400e98d 1220 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1221
e1d6a774 1222 if (is_cgi(con, filename, &filestats, type))
ef416fc2 1223 {
1224 /*
1225 * Note: con->command and con->options were set by
e1d6a774 1226 * is_cgi()...
ef416fc2 1227 */
1228
1229 if (!cupsdSendCommand(con, con->command, con->options, 0))
1230 {
1231 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1232 return (cupsdCloseClient(con));
1233 }
1234 else
1235 cupsdLogRequest(con, HTTP_OK);
1236
1237 if (con->http.version <= HTTP_1_0)
1238 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1239 break;
1240 }
1241
1242 if (!check_if_modified(con, &filestats))
1243 {
1244 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1245 return (cupsdCloseClient(con));
1246 }
1247 else
1248 {
1249 if (type == NULL)
1250 strcpy(line, "text/plain");
1251 else
1252 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1253
e1d6a774 1254 if (!send_file(con, HTTP_OK, filename, line, &filestats))
ef416fc2 1255 return (cupsdCloseClient(con));
1256 }
1257 }
1258 break;
1259
1260 case HTTP_POST_RECV :
1261 /*
1262 * See if the POST request includes a Content-Length field, and if
1263 * so check the length against any limits that are set...
1264 */
1265
1266 cupsdLogMessage(CUPSD_LOG_DEBUG2, "POST %s", con->uri);
1267 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1268 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1269
1270 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1271 MaxRequestSize > 0 &&
1272 con->http.data_remaining > MaxRequestSize)
1273 {
1274 /*
1275 * Request too large...
1276 */
1277
1278 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1279 return (cupsdCloseClient(con));
1280
1281 break;
1282 }
1283 else if (con->http.data_remaining < 0)
1284 {
1285 /*
1286 * Negative content lengths are invalid!
1287 */
1288
1289 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1290 return (cupsdCloseClient(con));
1291
1292 break;
1293 }
1294
1295 /*
1296 * See what kind of POST request this is; for IPP requests the
1297 * content-type field will be "application/ipp"...
1298 */
1299
1300 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1301 "application/ipp"))
1302 con->request = ippNew();
1303 else if ((!strncmp(con->uri, "/admin", 6) &&
1304 strncmp(con->uri, "/admin/conf/", 12) &&
1305 strncmp(con->uri, "/admin/log/", 11)) ||
1306 !strncmp(con->uri, "/printers", 9) ||
1307 !strncmp(con->uri, "/classes", 8) ||
1308 !strncmp(con->uri, "/help", 5) ||
1309 !strncmp(con->uri, "/jobs", 5))
1310 {
1311 /*
1312 * CGI request...
1313 */
1314
1315 if (!strncmp(con->uri, "/admin", 6))
1316 {
1317 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1318 ServerBin);
1319
b423cd4c 1320 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1321 }
1322 else if (!strncmp(con->uri, "/printers", 9))
1323 {
1324 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1325 ServerBin);
b423cd4c 1326
1327 if (con->uri[9] && con->uri[10])
1328 cupsdSetString(&con->options, con->uri + 9);
1329 else
1330 cupsdSetString(&con->options, NULL);
ef416fc2 1331 }
1332 else if (!strncmp(con->uri, "/classes", 8))
1333 {
1334 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1335 ServerBin);
b423cd4c 1336
1337 if (con->uri[8] && con->uri[9])
1338 cupsdSetString(&con->options, con->uri + 8);
1339 else
1340 cupsdSetString(&con->options, NULL);
ef416fc2 1341 }
1342 else if (!strncmp(con->uri, "/jobs", 5))
1343 {
1344 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1345 ServerBin);
b423cd4c 1346
1347 if (con->uri[5] && con->uri[6])
1348 cupsdSetString(&con->options, con->uri + 5);
1349 else
1350 cupsdSetString(&con->options, NULL);
ef416fc2 1351 }
1352 else
1353 {
1354 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1355 ServerBin);
ef416fc2 1356
b423cd4c 1357 if (con->uri[5] && con->uri[6])
1358 cupsdSetString(&con->options, con->uri + 5);
1359 else
1360 cupsdSetString(&con->options, NULL);
1361 }
ef416fc2 1362
1363 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b423cd4c 1364 "cupsdReadClient: %d command=\"%s\", "
1365 "options = \"%s\"",
ef416fc2 1366 con->http.fd, con->command, con->options);
1367
1368 if (con->http.version <= HTTP_1_0)
1369 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1370 }
1371 else
1372 {
1373 /*
1374 * POST to a file...
1375 */
1376
1377 if ((filename = get_file(con, &filestats, buf,
1378 sizeof(buf))) == NULL)
1379 {
1380 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1381 return (cupsdCloseClient(con));
1382
1383 break;
1384 }
1385
4400e98d 1386 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1387
e1d6a774 1388 if (!is_cgi(con, filename, &filestats, type))
ef416fc2 1389 {
1390 /*
1391 * Only POST to CGI's...
1392 */
1393
1394 if (!cupsdSendError(con, HTTP_UNAUTHORIZED))
1395 return (cupsdCloseClient(con));
1396 }
1397 }
1398 break;
1399
1400 case HTTP_PUT_RECV :
1401 /*
1402 * Validate the resource name...
1403 */
1404
1405 if (strncmp(con->uri, "/admin/conf/", 12) ||
1406 strchr(con->uri + 12, '/') ||
1407 strlen(con->uri) == 12)
1408 {
1409 /*
1410 * PUT can only be done to configuration files under
1411 * /admin/conf...
1412 */
1413
1414 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1415 return (cupsdCloseClient(con));
1416
1417 break;
1418 }
1419
1420 /*
1421 * See if the PUT request includes a Content-Length field, and if
1422 * so check the length against any limits that are set...
1423 */
1424
1425 cupsdLogMessage(CUPSD_LOG_DEBUG2, "PUT %s", con->uri);
1426 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1427 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1428
1429 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1430 MaxRequestSize > 0 &&
1431 con->http.data_remaining > MaxRequestSize)
1432 {
1433 /*
1434 * Request too large...
1435 */
1436
1437 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1438 return (cupsdCloseClient(con));
1439
1440 break;
1441 }
1442 else if (con->http.data_remaining < 0)
1443 {
1444 /*
1445 * Negative content lengths are invalid!
1446 */
1447
1448 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1449 return (cupsdCloseClient(con));
1450
1451 break;
1452 }
1453
1454 /*
1455 * Open a temporary file to hold the request...
1456 */
1457
1458 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1459 request_id ++);
1460 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1461
1462 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1463 "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1464 con->filename, con->file);
1465
1466 if (con->file < 0)
1467 {
1468 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1469 return (cupsdCloseClient(con));
1470 }
1471
1472 fchmod(con->file, 0640);
1473 fchown(con->file, RunUser, Group);
1474 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1475 break;
1476
1477 case HTTP_DELETE :
1478 case HTTP_TRACE :
1479 cupsdSendError(con, HTTP_NOT_IMPLEMENTED);
1480 return (cupsdCloseClient(con));
1481
1482 case HTTP_HEAD :
1483 if (!strncmp(con->uri, "/printers/", 10) &&
1484 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1485 {
1486 /*
1487 * Send PPD file - get the real printer name since printer
1488 * names are not case sensitive but filenames can be...
1489 */
1490
1491 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1492
1493 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1494 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1495 else
1496 {
1497 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1498 return (cupsdCloseClient(con));
1499
1500 break;
1501 }
1502 }
1503
1504 if ((!strncmp(con->uri, "/admin", 6) &&
1505 strncmp(con->uri, "/admin/conf/", 12) &&
1506 strncmp(con->uri, "/admin/log/", 11)) ||
1507 !strncmp(con->uri, "/printers", 9) ||
1508 !strncmp(con->uri, "/classes", 8) ||
1509 !strncmp(con->uri, "/help", 5) ||
1510 !strncmp(con->uri, "/jobs", 5))
1511 {
1512 /*
1513 * CGI output...
1514 */
1515
1516 if (!cupsdSendHeader(con, HTTP_OK, "text/html"))
1517 return (cupsdCloseClient(con));
1518
1519 if (httpPrintf(HTTP(con), "\r\n") < 0)
1520 return (cupsdCloseClient(con));
1521
1522 cupsdLogRequest(con, HTTP_OK);
1523 }
1524 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1525 (strchr(con->uri + 12, '/') ||
1526 strlen(con->uri) == 12)) ||
1527 (!strncmp(con->uri, "/admin/log/", 11) &&
1528 (strchr(con->uri + 11, '/') ||
1529 strlen(con->uri) == 11)))
1530 {
1531 /*
1532 * HEAD can only be done to configuration files under
1533 * /admin/conf...
1534 */
1535
1536 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1537 return (cupsdCloseClient(con));
1538
1539 break;
1540 }
1541 else if ((filename = get_file(con, &filestats, buf,
1542 sizeof(buf))) == NULL)
1543 {
1544 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html"))
1545 return (cupsdCloseClient(con));
1546
1547 cupsdLogRequest(con, HTTP_NOT_FOUND);
1548 }
1549 else if (!check_if_modified(con, &filestats))
1550 {
1551 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1552 return (cupsdCloseClient(con));
1553
1554 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
1555 }
1556 else
1557 {
1558 /*
1559 * Serve a file...
1560 */
1561
4400e98d 1562 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1563 if (type == NULL)
1564 strcpy(line, "text/plain");
1565 else
1566 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1567
1568 if (!cupsdSendHeader(con, HTTP_OK, line))
1569 return (cupsdCloseClient(con));
1570
1571 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
1572 httpGetDateString(filestats.st_mtime)) < 0)
1573 return (cupsdCloseClient(con));
1574
1575 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
1576 (unsigned long)filestats.st_size) < 0)
1577 return (cupsdCloseClient(con));
1578
1579 cupsdLogRequest(con, HTTP_OK);
1580 }
1581
1582 if (httpPrintf(HTTP(con), "\r\n") < 0)
1583 return (cupsdCloseClient(con));
1584
1585 con->http.state = HTTP_WAITING;
1586 break;
1587
1588 default :
1589 break; /* Anti-compiler-warning-code */
1590 }
1591 }
1592 }
1593
1594 /*
1595 * Handle any incoming data...
1596 */
1597
1598 switch (con->http.state)
1599 {
1600 case HTTP_PUT_RECV :
1601 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1602 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_%s, "
1603 "con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1604 con->http.fd,
1605 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1606 "CHUNKED" : "LENGTH",
1607 CUPS_LLCAST con->http.data_remaining, con->file);
1608
a4d04587 1609 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
ef416fc2 1610 return (cupsdCloseClient(con));
1611 else if (bytes > 0)
1612 {
1613 con->bytes += bytes;
1614
1615 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1616 "cupsdReadClient: %d writing %d bytes to %d",
1617 con->http.fd, bytes, con->file);
1618
1619 if (write(con->file, line, bytes) < bytes)
1620 {
1621 cupsdLogMessage(CUPSD_LOG_ERROR,
1622 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1623 bytes, con->filename, strerror(errno));
1624
1625 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1626 "cupsdReadClient: Closing data file %d...",
1627 con->file);
1628
1629 close(con->file);
1630 con->file = -1;
1631 unlink(con->filename);
1632 cupsdClearString(&con->filename);
1633
1634 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1635 return (cupsdCloseClient(con));
1636 }
1637 }
1638
1639 if (con->http.state == HTTP_WAITING)
1640 {
1641 /*
1642 * End of file, see how big it is...
1643 */
1644
1645 fstat(con->file, &filestats);
1646
1647 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1648 "cupsdReadClient: %d Closing data file %d, size="
1649 CUPS_LLFMT ".",
1650 con->http.fd, con->file,
1651 CUPS_LLCAST filestats.st_size);
1652
1653 close(con->file);
1654 con->file = -1;
1655
1656 if (filestats.st_size > MaxRequestSize &&
1657 MaxRequestSize > 0)
1658 {
1659 /*
1660 * Request is too big; remove it and send an error...
1661 */
1662
1663 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1664 "cupsdReadClient: %d Removing temp file %s",
1665 con->http.fd, con->filename);
1666 unlink(con->filename);
1667 cupsdClearString(&con->filename);
1668
1669 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1670 return (cupsdCloseClient(con));
1671 }
1672
1673 /*
1674 * Install the configuration file...
1675 */
1676
1677 status = install_conf_file(con);
1678
1679 /*
1680 * Return the status to the client...
1681 */
1682
1683 if (!cupsdSendError(con, status))
1684 return (cupsdCloseClient(con));
1685 }
1686 break;
1687
1688 case HTTP_POST_RECV :
1689 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1690 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_"
1691 "%s, con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1692 con->http.fd,
1693 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1694 "CHUNKED" : "LENGTH",
1695 CUPS_LLCAST con->http.data_remaining, con->file);
1696
1697 if (con->request != NULL)
1698 {
1699 /*
1700 * Grab any request data from the connection...
1701 */
1702
1703 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
1704 {
1705 cupsdLogMessage(CUPSD_LOG_ERROR,
1706 "cupsdReadClient: %d IPP Read Error!",
1707 con->http.fd);
1708
1709 cupsdSendError(con, HTTP_BAD_REQUEST);
1710 return (cupsdCloseClient(con));
1711 }
1712 else if (ipp_state != IPP_DATA)
1713 {
1714 if (con->http.state == HTTP_POST_SEND)
1715 {
1716 cupsdSendError(con, HTTP_BAD_REQUEST);
1717 return (cupsdCloseClient(con));
1718 }
1719
1720 break;
1721 }
1722 else
1723 con->bytes += ippLength(con->request);
1724 }
1725
1726 if (con->file < 0 && con->http.state != HTTP_POST_SEND)
1727 {
1728 /*
1729 * Create a file as needed for the request data...
1730 */
1731
1732 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
1733 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1734
1735 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1736 con->filename, con->file);
1737
1738 if (con->file < 0)
1739 {
1740 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1741 return (cupsdCloseClient(con));
1742 }
1743
1744 fchmod(con->file, 0640);
1745 fchown(con->file, RunUser, Group);
1746 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1747 }
1748
1749 if (con->http.state != HTTP_POST_SEND)
1750 {
a4d04587 1751 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
ef416fc2 1752 return (cupsdCloseClient(con));
1753 else if (bytes > 0)
1754 {
1755 con->bytes += bytes;
1756
1757 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1758 "cupsdReadClient: %d writing %d bytes to %d",
1759 con->http.fd, bytes, con->file);
1760
1761 if (write(con->file, line, bytes) < bytes)
1762 {
1763 cupsdLogMessage(CUPSD_LOG_ERROR,
1764 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1765 bytes, con->filename, strerror(errno));
1766
1767 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1768 "cupsdReadClient: Closing file %d...",
1769 con->file);
1770
1771 close(con->file);
1772 con->file = -1;
1773 unlink(con->filename);
1774 cupsdClearString(&con->filename);
1775
1776 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1777 return (cupsdCloseClient(con));
1778 }
1779 }
1780 else if (con->http.state == HTTP_POST_RECV)
1781 return (1); /* ??? */
1782 else if (con->http.state != HTTP_POST_SEND)
1783 return (cupsdCloseClient(con));
1784 }
1785
1786 if (con->http.state == HTTP_POST_SEND)
1787 {
1788 if (con->file >= 0)
1789 {
1790 fstat(con->file, &filestats);
1791
1792 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1793 "cupsdReadClient: %d Closing data file %d, "
1794 "size=" CUPS_LLFMT ".",
1795 con->http.fd, con->file,
1796 CUPS_LLCAST filestats.st_size);
1797
1798 close(con->file);
1799 con->file = -1;
1800
1801 if (filestats.st_size > MaxRequestSize &&
1802 MaxRequestSize > 0)
1803 {
1804 /*
1805 * Request is too big; remove it and send an error...
1806 */
1807
1808 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1809 "cupsdReadClient: %d Removing temp file %s",
1810 con->http.fd, con->filename);
1811 unlink(con->filename);
1812 cupsdClearString(&con->filename);
1813
1814 if (con->request)
1815 {
1816 /*
1817 * Delete any IPP request data...
1818 */
1819
1820 ippDelete(con->request);
1821 con->request = NULL;
1822 }
1823
1824 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1825 return (cupsdCloseClient(con));
1826 }
1827
1828 if (con->command)
1829 {
1830 if (!cupsdSendCommand(con, con->command, con->options, 0))
1831 {
1832 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1833 return (cupsdCloseClient(con));
1834 }
1835 else
1836 cupsdLogRequest(con, HTTP_OK);
1837 }
1838 }
1839
1840 if (con->request)
1841 return (cupsdProcessIPPRequest(con));
1842 }
1843 break;
1844
1845 default :
1846 break; /* Anti-compiler-warning-code */
1847 }
1848
1849 if (!con->http.keep_alive && con->http.state == HTTP_WAITING)
1850 return (cupsdCloseClient(con));
1851 else
1852 return (1);
1853}
1854
1855
1856/*
1857 * 'cupsdSendCommand()' - Send output from a command via HTTP.
1858 */
1859
1860int /* O - 1 on success, 0 on failure */
1861cupsdSendCommand(
1862 cupsd_client_t *con, /* I - Client connection */
1863 char *command, /* I - Command to run */
1864 char *options, /* I - Command-line options */
1865 int root) /* I - Run as root? */
1866{
1867 int fd; /* Standard input file descriptor */
1868
1869
1870 if (con->filename)
1871 fd = open(con->filename, O_RDONLY);
1872 else
1873 fd = open("/dev/null", O_RDONLY);
1874
1875 if (fd < 0)
1876 {
1877 cupsdLogMessage(CUPSD_LOG_ERROR,
1878 "cupsdSendCommand: %d Unable to open \"%s\" for reading: %s",
1879 con->http.fd, con->filename ? con->filename : "/dev/null",
1880 strerror(errno));
1881 return (0);
1882 }
1883
1884 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
1885
1886 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
1887
1888 close(fd);
1889
1890 cupsdLogMessage(CUPSD_LOG_INFO, "Started \"%s\" (pid=%d)", command,
1891 con->pipe_pid);
1892
1893 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendCommand: %d file=%d",
1894 con->http.fd, con->file);
1895
1896 if (con->pipe_pid == 0)
1897 return (0);
1898
1899 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1900
1901 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1902 "cupsdSendCommand: Adding fd %d to InputSet...", con->file);
1903 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1904 "cupsdSendCommand: Adding fd %d to OutputSet...",
1905 con->http.fd);
1906
1907 FD_SET(con->file, InputSet);
1908 FD_SET(con->http.fd, OutputSet);
1909
1910 con->sent_header = 0;
1911 con->file_ready = 0;
1912 con->got_fields = 0;
1913 con->field_col = 0;
1914
1915 return (1);
1916}
1917
1918
1919/*
1920 * 'cupsdSendError()' - Send an error message via HTTP.
1921 */
1922
1923int /* O - 1 if successful, 0 otherwise */
1924cupsdSendError(cupsd_client_t *con, /* I - Connection */
1925 http_status_t code) /* I - Error code */
1926{
4744bd90 1927#ifdef HAVE_SSL
1928 /*
1929 * Force client to upgrade for authentication if that is how the
1930 * server is configured...
1931 */
1932
1933 if (code == HTTP_UNAUTHORIZED &&
1934 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
1935 strcasecmp(con->http.hostname, "localhost") &&
1936 !con->http.tls)
1937 {
1938 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1939 "cupsdSendError: Encryption before authentication!");
1940 code = HTTP_UPGRADE_REQUIRED;
1941 }
1942#endif /* HAVE_SSL */
1943
ef416fc2 1944 /*
1945 * Put the request in the access_log file...
1946 */
1947
1948 cupsdLogRequest(con, code);
1949
1950 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendError: %d code=%d (%s)",
1951 con->http.fd, code, httpStatus(code));
1952
1953 /*
1954 * To work around bugs in some proxies, don't use Keep-Alive for some
1955 * error messages...
1956 */
1957
1958 if (code >= HTTP_BAD_REQUEST)
1959 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1960
1961 /*
1962 * Send an error message back to the client. If the error code is a
1963 * 400 or 500 series, make sure the message contains some text, too!
1964 */
1965
1966 if (!cupsdSendHeader(con, code, NULL))
1967 return (0);
1968
1969#ifdef HAVE_SSL
1970 if (code == HTTP_UPGRADE_REQUIRED)
1971 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
1972 return (0);
1973
1974 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n") < 0)
1975 return (0);
1976#endif /* HAVE_SSL */
1977
1978 if ((con->http.version >= HTTP_1_1 && !con->http.keep_alive) ||
1979 (code >= HTTP_BAD_REQUEST && code != HTTP_UPGRADE_REQUIRED))
1980 {
1981 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
1982 return (0);
1983 }
1984
1985 if (code >= HTTP_BAD_REQUEST)
1986 {
1987 /*
1988 * Send a human-readable error message.
1989 */
1990
80ca4592 1991 char message[4096], /* Message for user */
1992 urltext[1024], /* URL redirection text */
1993 redirect[1024]; /* Redirection link */
ef416fc2 1994 const char *text; /* Status-specific text */
1995
80ca4592 1996
1997 redirect[0] = '\0';
1998
ef416fc2 1999 if (code == HTTP_UNAUTHORIZED)
2000 text = _cupsLangString(con->language,
2001 _("Enter your username and password or the "
2002 "root username and password to access this "
2003 "page."));
2004 else if (code == HTTP_UPGRADE_REQUIRED)
80ca4592 2005 {
2006 text = urltext;
2007
2008 snprintf(urltext, sizeof(urltext),
2009 _cupsLangString(con->language,
2010 _("You must access this page using the URL "
2011 "<A HREF=\"https://%s:%d%s\">"
2012 "https://%s:%d%s</A>.")),
2013 con->servername, con->serverport, con->uri,
2014 con->servername, con->serverport, con->uri);
2015
2016 snprintf(redirect, sizeof(redirect),
2017 "<META HTTP-EQUIV=\"Refresh\" CONTENT=\"3;https://%s:%d%s\">\n",
2018 con->servername, con->serverport, con->uri);
2019 }
ef416fc2 2020 else
2021 text = "";
2022
2023 snprintf(message, sizeof(message),
2024 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" "
2025 "\"http://www.w3.org/TR/REC-html40/loose.dtd\">\n"
2026 "<HTML>\n"
2027 "<HEAD>\n"
2028 "\t<META HTTP-EQUIV=\"Content-Type\" "
2029 "CONTENT=\"text/html; charset=utf-8\">\n"
2030 "\t<TITLE>%d %s</TITLE>\n"
2031 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2032 "HREF=\"/cups.css\">\n"
80ca4592 2033 "%s"
ef416fc2 2034 "</HEAD>\n"
2035 "<BODY>\n"
2036 "<H1>%d %s</H1>\n"
2037 "<P>%s</P>\n"
2038 "</BODY>\n"
2039 "</HTML>\n",
80ca4592 2040 code, httpStatus(code), redirect, code, httpStatus(code), text);
ef416fc2 2041
2042 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2043 return (0);
2044 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2045 (int)strlen(message)) < 0)
2046 return (0);
2047 if (httpPrintf(HTTP(con), "\r\n") < 0)
2048 return (0);
2049 if (httpPrintf(HTTP(con), "%s", message) < 0)
2050 return (0);
2051 }
2052 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2053 return (0);
2054
2055 con->http.state = HTTP_WAITING;
2056
2057 return (1);
2058}
2059
2060
ef416fc2 2061/*
2062 * 'cupsdSendHeader()' - Send an HTTP request.
2063 */
2064
2065int /* O - 1 on success, 0 on failure */
2066cupsdSendHeader(cupsd_client_t *con, /* I - Client to send to */
2067 http_status_t code, /* I - HTTP status code */
2068 char *type) /* I - MIME type of document */
2069{
4744bd90 2070 /*
2071 * Send the HTTP status header...
2072 */
2073
ef416fc2 2074 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2075 con->http.version % 100, code, httpStatus(code)) < 0)
2076 return (0);
b423cd4c 2077
2078 if (code == HTTP_CONTINUE)
2079 {
4744bd90 2080 /*
2081 * 100-continue doesn't send any headers...
2082 */
2083
b423cd4c 2084 if (httpPrintf(HTTP(con), "\r\n") < 0)
2085 return (0);
2086 else
2087 return (1);
2088 }
2089
ef416fc2 2090 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2091 return (0);
2092 if (ServerHeader)
2093 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2094 return (0);
2095 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2096 {
2097 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2098 return (0);
2099 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2100 KeepAliveTimeout) < 0)
2101 return (0);
2102 }
2103 if (code == HTTP_METHOD_NOT_ALLOWED)
2104 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST\r\n") < 0)
2105 return (0);
2106
2107 if (code == HTTP_UNAUTHORIZED)
2108 {
2109 int auth_type; /* Authentication type */
2110
2111
2112 if (!con->best || con->best->type == AUTH_NONE)
2113 auth_type = DefaultAuthType;
2114 else
2115 auth_type = con->best->type;
2116
2117 if (auth_type != AUTH_DIGEST)
2118 {
2119 if (httpPrintf(HTTP(con),
2120 "WWW-Authenticate: Basic realm=\"CUPS\"\r\n") < 0)
2121 return (0);
2122 }
2123 else
2124 {
2125 if (httpPrintf(HTTP(con),
2126 "WWW-Authenticate: Digest realm=\"CUPS\", nonce=\"%s\"\r\n",
2127 con->http.hostname) < 0)
2128 return (0);
2129 }
2130 }
2131
e1d6a774 2132 if (con->language && strcmp(con->language->language, "C"))
ef416fc2 2133 {
2134 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2135 con->language->language) < 0)
2136 return (0);
2137 }
2138
e1d6a774 2139 if (type)
ef416fc2 2140 {
2141 if (!strcmp(type, "text/html"))
2142 {
2143 if (httpPrintf(HTTP(con),
2144 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2145 return (0);
2146 }
2147 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2148 return (0);
2149 }
2150
2151 return (1);
2152}
2153
2154
2155/*
2156 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2157 */
2158
2159void
2160cupsdUpdateCGI(void)
2161{
2162 char *ptr, /* Pointer to end of line in buffer */
2163 message[1024]; /* Pointer to message text */
2164 int loglevel; /* Log level for message */
2165
2166
2167 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2168 message, sizeof(message))) != NULL)
2169 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2170 break;
2171
2172 if (ptr == NULL && errno)
2173 {
2174 /*
2175 * Fatal error on pipe - should never happen!
2176 */
2177
2178 cupsdLogMessage(CUPSD_LOG_CRIT,
2179 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2180 strerror(errno));
2181 }
2182}
2183
2184
2185/*
2186 * 'cupsdWriteClient()' - Write data to a client as needed.
2187 */
2188
2189int /* O - 1 if success, 0 if fail */
2190cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2191{
2192 int bytes; /* Number of bytes written */
2193 char buf[16385]; /* Data buffer */
2194 char *bufptr; /* Pointer into buffer */
2195 ipp_state_t ipp_state; /* IPP state value */
2196
2197
2198#ifdef DEBUG
2199 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2200 "cupsdWriteClient(con=%p) %d response=%p, file=%d "
2201 "pipe_pid=%d state=%d",
2202 con, con->http.fd, con->response, con->file, con->pipe_pid,
2203 con->http.state);
2204#endif /* DEBUG */
2205
2206 if (con->http.state != HTTP_GET_SEND &&
2207 con->http.state != HTTP_POST_SEND)
2208 return (1);
2209
2210 if (con->response != NULL)
2211 {
2212 ipp_state = ippWrite(&(con->http), con->response);
2213 bytes = ipp_state != IPP_ERROR && ipp_state != IPP_DATA;
2214 }
2215 else if ((bytes = read(con->file, buf, sizeof(buf) - 1)) > 0)
2216 {
2217 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2218 "cupsdWriteClient: Read %d bytes from file %d...",
2219 bytes, con->file);
2220
2221 if (con->pipe_pid && !con->got_fields)
2222 {
2223 /*
2224 * Inspect the data for Content-Type and other fields.
2225 */
2226
2227 buf[bytes] = '\0';
2228
2229 for (bufptr = buf; !con->got_fields && *bufptr; bufptr ++)
2230 if (*bufptr == '\n')
2231 {
2232 /*
2233 * Send line to client...
2234 */
2235
2236 if (bufptr > buf && bufptr[-1] == '\r')
2237 bufptr[-1] = '\0';
2238 *bufptr++ = '\0';
2239
2240 cupsdLogMessage(CUPSD_LOG_DEBUG2, "Script header: %s", buf);
2241
2242 if (!con->sent_header)
2243 {
2244 /*
2245 * Handle redirection and CGI status codes...
2246 */
2247
2248 if (!strncasecmp(buf, "Location:", 9))
2249 cupsdSendHeader(con, HTTP_SEE_OTHER, NULL);
2250 else if (!strncasecmp(buf, "Status:", 7))
4744bd90 2251 cupsdSendError(con, atoi(buf + 7));
ef416fc2 2252 else
4744bd90 2253 {
ef416fc2 2254 cupsdSendHeader(con, HTTP_OK, NULL);
2255
4744bd90 2256 if (con->http.version == HTTP_1_1)
2257 {
2258 con->http.data_encoding = HTTP_ENCODE_CHUNKED;
ef416fc2 2259
4744bd90 2260 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
2261 return (0);
2262 }
2263 }
ef416fc2 2264
2265 con->sent_header = 1;
2266 }
2267
2268 if (strncasecmp(buf, "Status:", 7))
2269 httpPrintf(HTTP(con), "%s\r\n", buf);
2270
2271 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d %s",
2272 con->http.fd, buf);
2273
2274 /*
2275 * Update buffer...
2276 */
2277
2278 bytes -= (bufptr - buf);
2279 memmove(buf, bufptr, bytes + 1);
2280 bufptr = buf - 1;
2281
2282 /*
2283 * See if the line was empty...
2284 */
2285
2286 if (con->field_col == 0)
2287 con->got_fields = 1;
2288 else
2289 con->field_col = 0;
2290 }
2291 else if (*bufptr != '\r')
2292 con->field_col ++;
2293
2294 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2295 "cupsdWriteClient: %d bytes=%d, got_fields=%d",
2296 con->http.fd, bytes, con->got_fields);
2297
2298 if (bytes > 0 && !con->got_fields)
2299 {
2300 /*
2301 * Remaining text needs to go out...
2302 */
2303
2304 httpPrintf(HTTP(con), "%s", buf);
2305
2306 con->http.activity = time(NULL);
2307 return (1);
2308 }
2309 else if (bytes == 0)
ef416fc2 2310 con->http.activity = time(NULL);
ef416fc2 2311 }
2312
4744bd90 2313 if (bytes > 0)
ef416fc2 2314 {
4744bd90 2315 if (httpWrite2(HTTP(con), buf, bytes) < 0)
2316 {
2317 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2318 "cupsdWriteClient: %d Write of %d bytes failed!",
2319 con->http.fd, bytes);
ef416fc2 2320
4744bd90 2321 cupsdCloseClient(con);
2322 return (0);
2323 }
ef416fc2 2324
4744bd90 2325 con->bytes += bytes;
ef416fc2 2326
4744bd90 2327 if (con->http.state == HTTP_WAITING)
2328 bytes = 0;
2329 }
ef416fc2 2330 }
2331
2332 if (bytes <= 0)
2333 {
2334 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d bytes < 0",
2335 con->http.fd);
2336
2337 cupsdLogRequest(con, HTTP_OK);
2338
2339 httpFlushWrite(HTTP(con));
2340
2341 if (con->http.data_encoding == HTTP_ENCODE_CHUNKED)
2342 {
2343 if (httpPrintf(HTTP(con), "0\r\n\r\n") < 0)
2344 {
2345 cupsdCloseClient(con);
2346 return (0);
2347 }
2348 }
2349
2350 con->http.state = HTTP_WAITING;
2351
2352 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2353 "cupsdWriteClient: Removing fd %d from OutputSet...",
2354 con->http.fd);
2355
2356 FD_CLR(con->http.fd, OutputSet);
2357
2358 if (con->file >= 0)
2359 {
2360 if (FD_ISSET(con->file, InputSet))
2361 {
2362 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2363 "cupsdWriteClient: Removing fd %d from InputSet...",
2364 con->file);
2365 FD_CLR(con->file, InputSet);
2366 }
2367
2368 if (con->pipe_pid)
2369 cupsdEndProcess(con->pipe_pid, 0);
2370
2371 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2372 "cupsdWriteClient: %d Closing data file %d.",
2373 con->http.fd, con->file);
2374
2375 close(con->file);
2376 con->file = -1;
2377 con->pipe_pid = 0;
2378 }
2379
2380 if (con->filename)
2381 {
2382 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2383 "cupsdWriteClient: %d Removing temp file %s",
2384 con->http.fd, con->filename);
2385 unlink(con->filename);
2386 cupsdClearString(&con->filename);
2387 }
2388
2389 if (con->request != NULL)
2390 {
2391 ippDelete(con->request);
2392 con->request = NULL;
2393 }
2394
2395 if (con->response != NULL)
2396 {
2397 ippDelete(con->response);
2398 con->response = NULL;
2399 }
2400
2401 cupsdClearString(&con->command);
2402 cupsdClearString(&con->options);
2403
2404 if (!con->http.keep_alive)
2405 {
2406 cupsdCloseClient(con);
2407 return (0);
2408 }
2409 }
2410 else
2411 {
2412 con->file_ready = 0;
2413
2414 if (con->pipe_pid && !FD_ISSET(con->file, InputSet))
2415 {
2416 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2417 "cupsdWriteClient: Adding fd %d to InputSet...",
2418 con->file);
2419 FD_SET(con->file, InputSet);
2420 }
2421 }
2422
2423 con->http.activity = time(NULL);
2424
2425 return (1);
2426}
2427
2428
e1d6a774 2429/*
2430 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2431 */
2432
2433static int /* O - 1 if modified since */
2434check_if_modified(
2435 cupsd_client_t *con, /* I - Client connection */
2436 struct stat *filestats) /* I - File information */
2437{
2438 char *ptr; /* Pointer into field */
2439 time_t date; /* Time/date value */
2440 off_t size; /* Size/length value */
2441
2442
2443 size = 0;
2444 date = 0;
2445 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
2446
2447 if (*ptr == '\0')
2448 return (1);
2449
2450 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2451 "check_if_modified: %d If-Modified-Since=\"%s\"",
2452 con->http.fd, ptr);
2453
2454 while (*ptr != '\0')
2455 {
2456 while (isspace(*ptr) || *ptr == ';')
2457 ptr ++;
2458
2459 if (strncasecmp(ptr, "length=", 7) == 0)
2460 {
2461 ptr += 7;
2462 size = strtoll(ptr, NULL, 10);
2463
2464 while (isdigit(*ptr))
2465 ptr ++;
2466 }
2467 else if (isalpha(*ptr))
2468 {
2469 date = httpGetDateTime(ptr);
2470 while (*ptr != '\0' && *ptr != ';')
2471 ptr ++;
2472 }
2473 }
2474
2475 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2476 "check_if_modified: %d sizes=" CUPS_LLFMT ","
2477 CUPS_LLFMT " dates=%d,%d",
2478 con->http.fd, CUPS_LLCAST size,
2479 CUPS_LLCAST filestats->st_size, (int)date,
2480 (int)filestats->st_mtime);
2481
2482 return ((size != filestats->st_size && size != 0) ||
2483 (date < filestats->st_mtime && date != 0) ||
2484 (size == 0 && date == 0));
2485}
2486
2487
80ca4592 2488#ifdef HAVE_SSL
e1d6a774 2489/*
2490 * 'encrypt_client()' - Enable encryption for the client...
2491 */
2492
2493static int /* O - 1 on success, 0 on error */
2494encrypt_client(cupsd_client_t *con) /* I - Client to encrypt */
2495{
80ca4592 2496# ifdef HAVE_LIBSSL
e1d6a774 2497 SSL_CTX *context; /* Context for encryption */
2498 SSL *conn; /* Connection for encryption */
2499 unsigned long error; /* Error code */
2500
2501
2502 /*
2503 * Create the SSL context and accept the connection...
2504 */
2505
2506 context = SSL_CTX_new(SSLv23_server_method());
2507
2508 SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
2509 SSL_CTX_use_PrivateKey_file(context, ServerKey, SSL_FILETYPE_PEM);
2510 SSL_CTX_use_certificate_file(context, ServerCertificate, SSL_FILETYPE_PEM);
2511
2512 conn = SSL_new(context);
2513
2514 SSL_set_fd(conn, con->http.fd);
2515 if (SSL_accept(conn) != 1)
2516 {
2517 cupsdLogMessage(CUPSD_LOG_ERROR,
2518 "encrypt_client: Unable to encrypt connection from %s!",
2519 con->http.hostname);
2520
2521 while ((error = ERR_get_error()) != 0)
2522 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2523 ERR_error_string(error, NULL));
2524
2525 SSL_CTX_free(context);
2526 SSL_free(conn);
2527 return (0);
2528 }
2529
2530 cupsdLogMessage(CUPSD_LOG_DEBUG,
2531 "encrypt_client: %d Connection from %s now encrypted.",
2532 con->http.fd, con->http.hostname);
2533
2534 con->http.tls = conn;
2535 return (1);
2536
80ca4592 2537# elif defined(HAVE_GNUTLS)
e1d6a774 2538 http_tls_t *conn; /* TLS session object */
2539 int error; /* Error code */
2540 gnutls_certificate_server_credentials *credentials;
2541 /* TLS credentials */
2542
2543
2544 /*
2545 * Verify that we have a certificate...
2546 */
2547
2548 if (access(ServerKey, 0) || access(ServerCertificate, 0))
2549 {
2550 /*
2551 * Nope, make a self-signed certificate...
2552 */
2553
2554 make_certificate();
2555 }
2556
2557 /*
2558 * Create the SSL object and perform the SSL handshake...
2559 */
2560
2561 conn = (http_tls_t *)malloc(sizeof(gnutls_session));
2562
2563 if (conn == NULL)
2564 return (0);
2565
2566 credentials = (gnutls_certificate_server_credentials *)
2567 malloc(sizeof(gnutls_certificate_server_credentials));
2568 if (credentials == NULL)
2569 {
2570 cupsdLogMessage(CUPSD_LOG_ERROR,
2571 "encrypt_client: Unable to encrypt connection from %s!",
2572 con->http.hostname);
2573 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s", strerror(errno));
2574
2575 free(conn);
2576 return (0);
2577 }
2578
2579 gnutls_certificate_allocate_credentials(credentials);
2580 gnutls_certificate_set_x509_key_file(*credentials, ServerCertificate,
2581 ServerKey, GNUTLS_X509_FMT_PEM);
2582
2583 gnutls_init(&(conn->session), GNUTLS_SERVER);
2584 gnutls_set_default_priority(conn->session);
2585 gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
2586 gnutls_transport_set_ptr(conn->session,
2587 (gnutls_transport_ptr)((long)con->http.fd));
2588
2589 error = gnutls_handshake(conn->session);
2590
2591 if (error != GNUTLS_E_SUCCESS)
2592 {
2593 cupsdLogMessage(CUPSD_LOG_ERROR,
2594 "encrypt_client: Unable to encrypt connection from %s!",
2595 con->http.hostname);
2596 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2597 gnutls_strerror(error));
2598
2599 gnutls_deinit(conn->session);
2600 gnutls_certificate_free_credentials(*credentials);
2601 free(conn);
2602 free(credentials);
2603 return (0);
2604 }
2605
2606 cupsdLogMessage(CUPSD_LOG_DEBUG,
2607 "encrypt_client: %d Connection from %s now encrypted.",
2608 con->http.fd, con->http.hostname);
2609
2610 conn->credentials = credentials;
2611 con->http.tls = conn;
2612 return (1);
2613
80ca4592 2614# elif defined(HAVE_CDSASSL)
e1d6a774 2615 OSStatus error; /* Error info */
2616 SSLContextRef conn; /* New connection */
2617 CFArrayRef certificatesArray; /* Array containing certificates */
2618 int allowExpired; /* Allow expired certificates? */
2619 int allowAnyRoot; /* Allow any root certificate? */
2620
2621
2622 conn = NULL;
2623 error = SSLNewContext(true, &conn);
2624 allowExpired = 1;
2625 allowAnyRoot = 1;
2626
2627 certificatesArray = get_cdsa_server_certs();
2628
2629 if (!certificatesArray)
2630 {
2631 cupsdLogMessage(CUPSD_LOG_ERROR,
2632 "EncryptClient: Could not find signing key in keychain "
2633 "\"%s\"", ServerCertificate);
2634 error = errSSLBadCert; /* errSSLBadConfiguration is a better choice, but not available on 10.2.x */
2635 }
2636
2637 if (!error)
2638 error = SSLSetIOFuncs(conn, _httpReadCDSA, _httpWriteCDSA);
2639
2640 if (!error)
2641 error = SSLSetProtocolVersion(conn, kSSLProtocol3);
2642
2643 if (!error)
2644 error = SSLSetConnection(conn, (SSLConnectionRef)con->http.fd);
2645
2646 if (!error)
2647 error = SSLSetPeerDomainName(conn, ServerName, strlen(ServerName) + 1);
2648
2649 /* have to do these options before setting server certs */
2650 if (!error && allowExpired)
2651 error = SSLSetAllowsExpiredCerts(conn, true);
2652
2653 if (!error && allowAnyRoot)
2654 error = SSLSetAllowsAnyRoot(conn, true);
2655
2656 if (!error)
2657 error = SSLSetCertificate(conn, certificatesArray);
ef416fc2 2658
e1d6a774 2659 if (certificatesArray)
2660 {
2661 CFRelease(certificatesArray);
2662 certificatesArray = NULL;
2663 }
ef416fc2 2664
e1d6a774 2665 if (!error)
2666 {
2667 /*
2668 * Perform SSL/TLS handshake
2669 */
ef416fc2 2670
e1d6a774 2671 while ((error = SSLHandshake(conn)) == errSSLWouldBlock)
2672 usleep(1000);
2673 }
ef416fc2 2674
e1d6a774 2675 if (error)
2676 {
2677 cupsdLogMessage(CUPSD_LOG_ERROR,
2678 "encrypt_client: Unable to encrypt connection from %s!",
2679 con->http.hostname);
ef416fc2 2680
e1d6a774 2681 cupsdLogMessage(CUPSD_LOG_ERROR,
2682 "encrypt_client: CDSA error code is %d", (int)error);
ef416fc2 2683
e1d6a774 2684 con->http.error = error;
2685 con->http.status = HTTP_ERROR;
ef416fc2 2686
e1d6a774 2687 if (conn != NULL)
2688 SSLDisposeContext(conn);
ef416fc2 2689
e1d6a774 2690 return (0);
ef416fc2 2691 }
2692
e1d6a774 2693 cupsdLogMessage(CUPSD_LOG_DEBUG,
2694 "encrypt_client: %d Connection from %s now encrypted.",
2695 con->http.fd, con->http.hostname);
ef416fc2 2696
e1d6a774 2697 con->http.tls = conn;
2698 return (1);
2699
80ca4592 2700# endif /* HAVE_LIBSSL */
ef416fc2 2701}
80ca4592 2702#endif /* HAVE_SSL */
ef416fc2 2703
2704
2705#ifdef HAVE_CDSASSL
2706/*
2707 * 'get_cdsa_server_certs()' - Convert a keychain name into the CFArrayRef
2708 * required by SSLSetCertificate.
2709 *
2710 * For now we assumes that there is exactly one SecIdentity in the
2711 * keychain - i.e. there is exactly one matching cert/private key pair.
2712 * In the future we will search a keychain for a SecIdentity matching a
2713 * specific criteria. We also skip the operation of adding additional
2714 * non-signing certs from the keychain to the CFArrayRef.
2715 *
2716 * To create a self-signed certificate for testing use the certtool.
2717 * Executing the following as root will do it:
2718 *
b423cd4c 2719 * certtool c k=/Library/Keychains/System.keychain
ef416fc2 2720 */
2721
2722static CFArrayRef /* O - Array of certificates */
2723get_cdsa_server_certs(void)
2724{
2725 OSStatus err; /* Error info */
2726 SecKeychainRef kcRef; /* Keychain reference */
2727 SecIdentitySearchRef srchRef; /* Search reference */
2728 SecIdentityRef identity; /* Identity */
2729 CFArrayRef ca; /* Certificate array */
2730
2731
2732 kcRef = NULL;
2733 srchRef = NULL;
2734 identity = NULL;
2735 ca = NULL;
2736 err = SecKeychainOpen(ServerCertificate, &kcRef);
2737
2738 if (err)
2739 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot open keychain \"%s\", error %d.",
2740 ServerCertificate, (int)err);
2741 else
2742 {
2743 /*
2744 * Search for "any" identity matching specified key use;
2745 * in this app, we expect there to be exactly one.
2746 */
2747
2748 err = SecIdentitySearchCreate(kcRef, CSSM_KEYUSE_SIGN, &srchRef);
2749
2750 if (err)
2751 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2752 "Cannot find signing key in keychain \"%s\", error %d",
2753 ServerCertificate, (int)err);
2754 else
2755 {
2756 err = SecIdentitySearchCopyNext(srchRef, &identity);
2757
2758 if (err)
2759 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2760 "Cannot find signing key in keychain \"%s\", error %d",
2761 ServerCertificate, (int)err);
2762 else
2763 {
2764 if (CFGetTypeID(identity) != SecIdentityGetTypeID())
2765 cupsdLogMessage(CUPSD_LOG_ERROR,
2766 "SecIdentitySearchCopyNext CFTypeID failure!");
2767 else
2768 {
2769 /*
2770 * Found one. Place it in a CFArray.
2771 * TBD: snag other (non-identity) certs from keychain and add them
2772 * to array as well.
2773 */
2774
b423cd4c 2775 ca = CFArrayCreate(NULL, (const void **)&identity, 1, &kCFTypeArrayCallBacks);
ef416fc2 2776
2777 if (ca == nil)
2778 cupsdLogMessage(CUPSD_LOG_ERROR, "CFArrayCreate error");
2779 }
2780
b423cd4c 2781 CFRelease(identity);
ef416fc2 2782 }
2783
b423cd4c 2784 CFRelease(srchRef);
ef416fc2 2785 }
2786
b423cd4c 2787 CFRelease(kcRef);
ef416fc2 2788 }
2789
2790 return (ca);
2791}
2792#endif /* HAVE_CDSASSL */
2793
2794
2795/*
2796 * 'get_file()' - Get a filename and state info.
2797 */
2798
2799static char * /* O - Real filename */
2800get_file(cupsd_client_t *con, /* I - Client connection */
2801 struct stat *filestats, /* O - File information */
2802 char *filename, /* IO - Filename buffer */
2803 int len) /* I - Buffer length */
2804{
2805 int status; /* Status of filesystem calls */
2806 char *ptr; /* Pointer info filename */
2807 int plen; /* Remaining length after pointer */
2808
2809
2810 /*
2811 * Need to add DocumentRoot global...
2812 */
2813
2814 if (!strncmp(con->uri, "/ppd/", 5))
2815 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
2816 else if (!strncmp(con->uri, "/admin/conf/", 12))
2817 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
2818 else if (!strncmp(con->uri, "/admin/log/", 11))
2819 {
2820 if (!strcmp(con->uri + 11, "access_log") && AccessLog[0] == '/')
2821 strlcpy(filename, AccessLog, len);
2822 else if (!strcmp(con->uri + 11, "error_log") && ErrorLog[0] == '/')
2823 strlcpy(filename, ErrorLog, len);
2824 else if (!strcmp(con->uri + 11, "page_log") && PageLog[0] == '/')
2825 strlcpy(filename, PageLog, len);
2826 else
2827 return (NULL);
2828 }
2829 else if (con->language != NULL)
2830 snprintf(filename, len, "%s/%s%s", DocumentRoot, con->language->language,
2831 con->uri);
2832 else
2833 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2834
2835 if ((ptr = strchr(filename, '?')) != NULL)
2836 *ptr = '\0';
2837
2838 /*
2839 * Grab the status for this language; if there isn't a language-specific file
2840 * then fallback to the default one...
2841 */
2842
2843 if ((status = stat(filename, filestats)) != 0 && con->language != NULL)
2844 {
2845 /*
2846 * Drop the language prefix and try the current directory...
2847 */
2848
2849 if (strncmp(con->uri, "/ppd/", 5) &&
2850 strncmp(con->uri, "/admin/conf/", 12) &&
2851 strncmp(con->uri, "/admin/log/", 11))
2852 {
2853 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2854
2855 if ((ptr = strchr(filename, '?')) != NULL)
2856 *ptr = '\0';
2857
2858 status = stat(filename, filestats);
2859 }
2860 }
2861
2862 /*
2863 * If we're found a directory, get the index.html file instead...
2864 */
2865
2866 if (!status && S_ISDIR(filestats->st_mode))
2867 {
2868 if (filename[strlen(filename) - 1] != '/')
2869 strlcat(filename, "/", len);
2870
2871 ptr = filename + strlen(filename);
2872 plen = len - (ptr - filename);
2873
2874 strlcpy(ptr, "index.html", plen);
2875 status = stat(filename, filestats);
2876
2877#ifdef HAVE_JAVA
2878 if (status)
2879 {
2880 strlcpy(ptr, "index.class", plen);
2881 status = stat(filename, filestats);
2882 }
2883#endif /* HAVE_JAVA */
2884
2885#ifdef HAVE_PERL
2886 if (status)
2887 {
2888 strlcpy(ptr, "index.pl", plen);
2889 status = stat(filename, filestats);
2890 }
2891#endif /* HAVE_PERL */
2892
2893#ifdef HAVE_PHP
2894 if (status)
2895 {
2896 strlcpy(ptr, "index.php", plen);
2897 status = stat(filename, filestats);
2898 }
2899#endif /* HAVE_PHP */
2900
2901#ifdef HAVE_PYTHON
2902 if (status)
2903 {
2904 strlcpy(ptr, "index.pyc", plen);
2905 status = stat(filename, filestats);
2906 }
2907
2908 if (status)
2909 {
2910 strlcpy(ptr, "index.py", plen);
2911 status = stat(filename, filestats);
2912 }
2913#endif /* HAVE_PYTHON */
2914 }
2915
2916 cupsdLogMessage(CUPSD_LOG_DEBUG2, "get_file: %d filename=%s size=%d",
2917 con->http.fd, filename,
2918 status ? -1 : (int)filestats->st_size);
2919
2920 if (!status)
2921 con->http.data_remaining = (int)filestats->st_size;
2922
2923 if (status)
2924 return (NULL);
2925 else
2926 return (filename);
2927}
2928
2929
2930/*
2931 * 'install_conf_file()' - Install a configuration file.
2932 */
2933
2934static http_status_t /* O - Status */
2935install_conf_file(cupsd_client_t *con) /* I - Connection */
2936{
2937 cups_file_t *in, /* Input file */
2938 *out; /* Output file */
2939 char buffer[1024]; /* Copy buffer */
2940 int bytes; /* Number of bytes */
2941 char conffile[1024], /* Configuration filename */
2942 newfile[1024], /* New config filename */
2943 oldfile[1024]; /* Old config filename */
2944 struct stat confinfo; /* Config file info */
2945
2946
2947 /*
2948 * First construct the filenames...
2949 */
2950
2951 snprintf(conffile, sizeof(conffile), "%s%s", ServerRoot, con->uri + 11);
2952 snprintf(newfile, sizeof(newfile), "%s%s.N", ServerRoot, con->uri + 11);
2953 snprintf(oldfile, sizeof(oldfile), "%s%s.O", ServerRoot, con->uri + 11);
2954
2955 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...", conffile);
2956
2957 /*
2958 * Get the owner, group, and permissions of the configuration file.
2959 * If it doesn't exist, assign it to the User and Group in the
2960 * cupsd.conf file with mode 0640 permissions.
2961 */
2962
2963 if (stat(conffile, &confinfo))
2964 {
2965 confinfo.st_uid = User;
2966 confinfo.st_gid = Group;
2967 confinfo.st_mode = ConfigFilePerm;
2968 }
2969
2970 /*
2971 * Open the request file and new config file...
2972 */
2973
2974 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
2975 {
2976 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\" - %s",
2977 con->filename, strerror(errno));
2978 return (HTTP_SERVER_ERROR);
2979 }
2980
2981 if ((out = cupsFileOpen(newfile, "wb")) == NULL)
2982 {
2983 cupsFileClose(in);
2984 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open config file \"%s\" - %s",
2985 newfile, strerror(errno));
2986 return (HTTP_SERVER_ERROR);
2987 }
2988
2989 fchmod(cupsFileNumber(out), confinfo.st_mode);
2990 fchown(cupsFileNumber(out), confinfo.st_uid, confinfo.st_gid);
2991
2992 /*
2993 * Copy from the request to the new config file...
2994 */
2995
2996 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
2997 if (cupsFileWrite(out, buffer, bytes) < bytes)
2998 {
2999 cupsdLogMessage(CUPSD_LOG_ERROR,
3000 "Unable to copy to config file \"%s\" - %s",
3001 newfile, strerror(errno));
3002
3003 cupsFileClose(in);
3004 cupsFileClose(out);
3005 unlink(newfile);
3006
3007 return (HTTP_SERVER_ERROR);
3008 }
3009
3010 /*
3011 * Close the files...
3012 */
3013
3014 cupsFileClose(in);
3015 if (cupsFileClose(out))
3016 {
3017 cupsdLogMessage(CUPSD_LOG_ERROR,
3018 "Error file closing config file \"%s\" - %s",
3019 newfile, strerror(errno));
3020
3021 unlink(newfile);
3022
3023 return (HTTP_SERVER_ERROR);
3024 }
3025
3026 /*
3027 * Remove the request file...
3028 */
3029
3030 unlink(con->filename);
3031 cupsdClearString(&con->filename);
3032
3033 /*
3034 * Unlink the old backup, rename the current config file to the backup
3035 * filename, and rename the new config file to the config file name...
3036 */
3037
3038 if (unlink(oldfile))
3039 if (errno != ENOENT)
3040 {
3041 cupsdLogMessage(CUPSD_LOG_ERROR,
3042 "Unable to remove backup config file \"%s\" - %s",
3043 oldfile, strerror(errno));
3044
3045 unlink(newfile);
3046
3047 return (HTTP_SERVER_ERROR);
3048 }
3049
3050 if (rename(conffile, oldfile))
3051 if (errno != ENOENT)
3052 {
3053 cupsdLogMessage(CUPSD_LOG_ERROR,
3054 "Unable to rename old config file \"%s\" - %s",
3055 conffile, strerror(errno));
3056
3057 unlink(newfile);
3058
3059 return (HTTP_SERVER_ERROR);
3060 }
3061
3062 if (rename(newfile, conffile))
3063 {
3064 cupsdLogMessage(CUPSD_LOG_ERROR,
3065 "Unable to rename new config file \"%s\" - %s",
3066 newfile, strerror(errno));
3067
3068 rename(oldfile, conffile);
3069 unlink(newfile);
3070
3071 return (HTTP_SERVER_ERROR);
3072 }
3073
3074 /*
3075 * If the cupsd.conf file was updated, set the NeedReload flag...
3076 */
3077
3078 if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
3079 NeedReload = RELOAD_CUPSD;
3080 else
3081 NeedReload = RELOAD_ALL;
3082
3083 ReloadTime = time(NULL);
3084
3085 /*
3086 * Return that the file was created successfully...
3087 */
3088
3089 return (HTTP_CREATED);
3090}
3091
3092
e1d6a774 3093/*
3094 * 'is_cgi()' - Is the resource a CGI script/program?
3095 */
3096
3097static int /* O - 1 = CGI, 0 = file */
3098is_cgi(cupsd_client_t *con, /* I - Client connection */
3099 const char *filename, /* I - Real filename */
3100 struct stat *filestats, /* I - File information */
3101 mime_type_t *type) /* I - MIME type */
3102{
3103 const char *options; /* Options on URL */
3104
3105
3106 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3107 "is_cgi(con=%p, filename=\"%s\", filestats=%p, type=%s/%s)\n",
3108 con, filename, filestats, type ? type->super : "unknown",
3109 type ? type->type : "unknown");
3110
3111 /*
3112 * Get the options, if any...
3113 */
3114
3115 if ((options = strchr(con->uri, '?')) != NULL)
3116 options ++;
3117
3118 /*
3119 * Check for known types...
3120 */
3121
3122 if (!type || strcasecmp(type->super, "application"))
3123 {
3124 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3125 return (0);
3126 }
3127
3128 if (!strcasecmp(type->type, "x-httpd-cgi") &&
3129 (filestats->st_mode & 0111))
3130 {
3131 /*
3132 * "application/x-httpd-cgi" is a CGI script.
3133 */
3134
3135 cupsdSetString(&con->command, filename);
3136
3137 filename = strrchr(filename, '/') + 1; /* Filename always absolute */
3138
3139 cupsdSetString(&con->options, options);
3140
3141 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3142 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3143 con->command, con->options);
3144
3145 return (1);
3146 }
3147#ifdef HAVE_JAVA
3148 else if (!strcasecmp(type->type, "x-httpd-java"))
3149 {
3150 /*
3151 * "application/x-httpd-java" is a Java servlet.
3152 */
3153
3154 cupsdSetString(&con->command, CUPS_JAVA);
3155
3156 if (options)
3157 cupsdSetStringf(&con->options, "%s %s", filename, options);
3158 else
3159 cupsdSetString(&con->options, filename);
3160
3161 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3162 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3163 con->command, con->options);
3164
3165 return (1);
3166 }
3167#endif /* HAVE_JAVA */
3168#ifdef HAVE_PERL
3169 else if (!strcasecmp(type->type, "x-httpd-perl"))
3170 {
3171 /*
3172 * "application/x-httpd-perl" is a Perl page.
3173 */
3174
3175 cupsdSetString(&con->command, CUPS_PERL);
3176
3177 if (options)
3178 cupsdSetStringf(&con->options, "%s %s", filename, options);
3179 else
3180 cupsdSetString(&con->options, filename);
3181
3182 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3183 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3184 con->command, con->options);
3185
3186 return (1);
3187 }
3188#endif /* HAVE_PERL */
3189#ifdef HAVE_PHP
3190 else if (!strcasecmp(type->type, "x-httpd-php"))
3191 {
3192 /*
3193 * "application/x-httpd-php" is a PHP page.
3194 */
3195
3196 cupsdSetString(&con->command, CUPS_PHP);
3197
3198 if (options)
3199 cupsdSetStringf(&con->options, "%s %s", filename, options);
3200 else
3201 cupsdSetString(&con->options, filename);
3202
3203 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3204 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3205 con->command, con->options);
3206
3207 return (1);
3208 }
3209#endif /* HAVE_PHP */
3210#ifdef HAVE_PYTHON
3211 else if (!strcasecmp(type->type, "x-httpd-python"))
3212 {
3213 /*
3214 * "application/x-httpd-python" is a Python page.
3215 */
3216
3217 cupsdSetString(&con->command, CUPS_PYTHON);
3218
3219 if (options)
3220 cupsdSetStringf(&con->options, "%s %s", filename, options);
3221 else
3222 cupsdSetString(&con->options, filename);
3223
3224 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3225 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3226 con->command, con->options);
3227
3228 return (1);
3229 }
3230#endif /* HAVE_PYTHON */
3231
3232 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3233
3234 return (0);
3235}
3236
3237
ef416fc2 3238/*
3239 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3240 */
3241
3242static int /* O - 0 if relative, 1 if absolute */
3243is_path_absolute(const char *path) /* I - Input path */
3244{
3245 /*
3246 * Check for a leading slash...
3247 */
3248
3249 if (path[0] != '/')
3250 return (0);
3251
3252 /*
3253 * Check for "/.." in the path...
3254 */
3255
3256 while ((path = strstr(path, "/..")) != NULL)
3257 {
3258 if (!path[3] || path[3] == '/')
3259 return (0);
3260
3261 path ++;
3262 }
3263
3264 /*
3265 * If we haven't found any relative paths, return 1 indicating an
3266 * absolute path...
3267 */
3268
3269 return (1);
3270}
3271
3272
4744bd90 3273#ifdef HAVE_GNUTLS
3274/*
3275 * 'make_certificate()' - Make a self-signed SSL/TLS certificate.
3276 */
3277
3278static void
3279make_certificate(void)
3280{
3281 gnutls_x509_crt crt; /* Self-signed certificate */
3282 gnutls_x509_privkey key; /* Encryption key */
3283 cups_lang_t *language; /* Default language info */
3284 cups_file_t *fp; /* Key/cert file */
3285 unsigned char buffer[8192]; /* Buffer for x509 data */
3286 size_t bytes; /* Number of bytes of data */
3287 unsigned char serial[4]; /* Serial number buffer */
3288 time_t curtime; /* Current time */
3289 int result; /* Result of GNU TLS calls */
3290
3291
3292 /*
3293 * Create the encryption key...
3294 */
3295
3296 cupsdLogMessage(CUPSD_LOG_INFO, "Generating server key...");
3297
3298 gnutls_x509_privkey_init(&key);
3299 gnutls_x509_privkey_generate(key, GNUTLS_PK_RSA, 2048, 0);
3300
3301 /*
3302 * Save it...
3303 */
3304
3305 bytes = sizeof(buffer);
3306
3307 if ((result = gnutls_x509_privkey_export(key, GNUTLS_X509_FMT_PEM,
3308 buffer, &bytes)) < 0)
3309 {
3310 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to export server key - %s",
3311 gnutls_strerror(result));
3312 gnutls_x509_privkey_deinit(key);
3313 return;
3314 }
3315 else if ((fp = cupsFileOpen(ServerKey, "w")) != NULL)
3316 {
3317 cupsFileWrite(fp, (char *)buffer, bytes);
3318 cupsFileClose(fp);
3319
3320 cupsdLogMessage(CUPSD_LOG_INFO, "Created server key file \"%s\"...",
3321 ServerKey);
3322 }
3323 else
3324 {
3325 cupsdLogMessage(CUPSD_LOG_ERROR,
3326 "Unable to create server key file \"%s\" - %s",
3327 ServerKey, strerror(errno));
3328 gnutls_x509_privkey_deinit(key);
3329 return;
3330 }
3331
3332 /*
3333 * Create the self-signed certificate...
3334 */
3335
3336 cupsdLogMessage(CUPSD_LOG_INFO, "Generating self-signed certificate...");
3337
3338 language = cupsLangDefault();
3339 curtime = time(NULL);
3340 serial[0] = curtime >> 24;
3341 serial[1] = curtime >> 16;
3342 serial[2] = curtime >> 8;
3343 serial[3] = curtime;
3344
3345 gnutls_x509_crt_init(&crt);
3346 if (strlen(language->language) == 5)
3347 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3348 language->language + 3, 2);
3349 else
3350 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3351 "US", 2);
3352 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COMMON_NAME, 0,
3353 ServerName, strlen(ServerName));
3354 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
3355 ServerName, strlen(ServerName));
3356 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME,
3357 0, "Unknown", 7);
3358 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0,
3359 "Unknown", 7);
3360 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_LOCALITY_NAME, 0,
3361 "Unknown", 7);
3362 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_PKCS9_EMAIL, 0,
3363 ServerAdmin, strlen(ServerAdmin));
3364 gnutls_x509_crt_set_key(crt, key);
3365 gnutls_x509_crt_set_serial(crt, serial, sizeof(serial));
3366 gnutls_x509_crt_set_activation_time(crt, curtime);
3367 gnutls_x509_crt_set_expiration_time(crt, curtime + 10 * 365 * 86400);
3368 gnutls_x509_crt_set_ca_status(crt, 0);
3369 gnutls_x509_crt_set_subject_alternative_name(crt, GNUTLS_SAN_DNSNAME,
3370 ServerName);
3371 gnutls_x509_crt_set_key_purpose_oid(crt, GNUTLS_KP_TLS_WWW_SERVER, 0);
3372 gnutls_x509_crt_set_key_usage(crt, GNUTLS_KEY_KEY_ENCIPHERMENT);
3373 gnutls_x509_crt_set_version(crt, 3);
3374
3375 bytes = sizeof(buffer);
3376 if (gnutls_x509_crt_get_key_id(crt, 0, buffer, &bytes) >= 0)
3377 gnutls_x509_crt_set_subject_key_id(crt, buffer, bytes);
3378
3379 gnutls_x509_crt_sign(crt, crt, key);
3380
3381 /*
3382 * Save it...
3383 */
3384
3385 bytes = sizeof(buffer);
3386 if ((result = gnutls_x509_crt_export(crt, GNUTLS_X509_FMT_PEM,
3387 buffer, &bytes)) < 0)
3388 cupsdLogMessage(CUPSD_LOG_ERROR,
3389 "Unable to export server certificate - %s",
3390 gnutls_strerror(result));
3391 else if ((fp = cupsFileOpen(ServerCertificate, "w")) != NULL)
3392 {
3393 cupsFileWrite(fp, (char *)buffer, bytes);
3394 cupsFileClose(fp);
3395
3396 cupsdLogMessage(CUPSD_LOG_INFO,
3397 "Created 10-year server certificate file \"%s\"...",
3398 ServerCertificate);
3399 }
3400 else
3401 cupsdLogMessage(CUPSD_LOG_ERROR,
3402 "Unable to create server certificate file \"%s\" - %s",
3403 ServerCertificate, strerror(errno));
3404
3405 /*
3406 * Cleanup...
3407 */
3408
3409 gnutls_x509_crt_deinit(crt);
3410 gnutls_x509_privkey_deinit(key);
3411}
3412#endif /* HAVE_GNUTLS */
3413
3414
ef416fc2 3415/*
3416 * 'pipe_command()' - Pipe the output of a command to the remote client.
3417 */
3418
3419static int /* O - Process ID */
3420pipe_command(cupsd_client_t *con, /* I - Client connection */
3421 int infile, /* I - Standard input for command */
3422 int *outfile, /* O - Standard output for command */
3423 char *command, /* I - Command to run */
3424 char *options, /* I - Options for command */
3425 int root) /* I - Run as root? */
3426{
3427 int i; /* Looping var */
3428 int pid; /* Process ID */
b423cd4c 3429 char *commptr, /* Command string pointer */
3430 commch; /* Command string character */
ef416fc2 3431 char *uriptr; /* URI string pointer */
3432 int fds[2]; /* Pipe FDs */
3433 int argc; /* Number of arguments */
3434 int envc; /* Number of environment variables */
3435 char argbuf[10240], /* Argument buffer */
3436 *argv[100], /* Argument strings */
b423cd4c 3437 *envp[MAX_ENV + 17]; /* Environment variables */
ef416fc2 3438 char content_length[1024], /* CONTENT_LENGTH environment variable */
3439 content_type[1024], /* CONTENT_TYPE environment variable */
3440 http_cookie[32768], /* HTTP_COOKIE environment variable */
3441 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3442 lang[1024], /* LANG environment variable */
b423cd4c 3443 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 3444 *query_string, /* QUERY_STRING env variable */
3445 remote_addr[1024], /* REMOTE_ADDR environment variable */
3446 remote_host[1024], /* REMOTE_HOST environment variable */
3447 remote_user[1024], /* REMOTE_USER environment variable */
3448 script_name[1024], /* SCRIPT_NAME environment variable */
3449 server_name[1024], /* SERVER_NAME environment variable */
3450 server_port[1024]; /* SERVER_PORT environment variable */
3451
3452
3453 /*
3454 * Parse a copy of the options string, which is of the form:
3455 *
b423cd4c 3456 * argument+argument+argument
3457 * ?argument+argument+argument
3458 * param=value&param=value
3459 * ?param=value&param=value
3460 * /name?argument+argument+argument
3461 * /name?param=value&param=value
ef416fc2 3462 *
3463 * If the string contains an "=" character after the initial name,
3464 * then we treat it as a HTTP GET form request and make a copy of
3465 * the remaining string for the environment variable.
3466 *
3467 * The string is always parsed out as command-line arguments, to
3468 * be consistent with Apache...
3469 */
3470
3471 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3472 "pipe_command: command=\"%s\", options=\"%s\"",
3473 command, options);
3474
b423cd4c 3475 argv[0] = command;
ef416fc2 3476 query_string = NULL;
3477
b423cd4c 3478 if (options)
3479 strlcpy(argbuf, options, sizeof(argbuf));
3480 else
3481 argbuf[0] = '\0';
3482
3483 if (argbuf[0] == '/')
ef416fc2 3484 {
3485 /*
b423cd4c 3486 * Found some trailing path information, set PATH_INFO...
ef416fc2 3487 */
3488
b423cd4c 3489 if ((commptr = strchr(argbuf, '?')) == NULL)
3490 commptr = argbuf + strlen(argbuf);
ef416fc2 3491
b423cd4c 3492 commch = *commptr;
3493 *commptr = '\0';
3494 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
3495 *commptr = commch;
3496 }
3497 else
3498 {
3499 commptr = argbuf;
3500 path_info[0] = '\0';
3501 }
ef416fc2 3502
b423cd4c 3503 if (*commptr == '?' && con->operation == HTTP_GET)
3504 {
3505 commptr ++;
3506 cupsdSetStringf(&query_string, "QUERY_STRING=%s", commptr);
3507 }
ef416fc2 3508
b423cd4c 3509 argc = 1;
ef416fc2 3510
b423cd4c 3511 if (*commptr)
3512 {
3513 argv[argc ++] = commptr;
ef416fc2 3514
b423cd4c 3515 for (; *commptr && argc < 99; commptr ++)
3516 {
ef416fc2 3517 /*
b423cd4c 3518 * Break arguments whenever we see a + or space...
ef416fc2 3519 */
3520
b423cd4c 3521 if (*commptr == ' ' || *commptr == '+')
3522 {
3523 while (*commptr == ' ' || *commptr == '+')
3524 *commptr++ = '\0';
ef416fc2 3525
b423cd4c 3526 /*
3527 * If we don't have a blank string, save it as another argument...
3528 */
ef416fc2 3529
b423cd4c 3530 if (*commptr)
3531 {
3532 argv[argc] = commptr;
3533 argc ++;
3534 }
3535 else
3536 break;
3537 }
3538 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
3539 isxdigit(commptr[2] & 255))
3540 {
3541 /*
3542 * Convert the %xx notation to the individual character.
3543 */
ef416fc2 3544
b423cd4c 3545 if (commptr[1] >= '0' && commptr[1] <= '9')
3546 *commptr = (commptr[1] - '0') << 4;
3547 else
3548 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
ef416fc2 3549
b423cd4c 3550 if (commptr[2] >= '0' && commptr[2] <= '9')
3551 *commptr |= commptr[2] - '0';
3552 else
3553 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 3554
b423cd4c 3555 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 3556
b423cd4c 3557 /*
3558 * Check for a %00 and break if that is the case...
3559 */
ef416fc2 3560
b423cd4c 3561 if (!*commptr)
3562 break;
3563 }
ef416fc2 3564 }
3565 }
3566
3567 argv[argc] = NULL;
3568
ef416fc2 3569 /*
3570 * Setup the environment variables as needed...
3571 */
3572
3573 if (con->language)
3574 snprintf(lang, sizeof(lang), "LANG=%s.UTF-8", con->language->language);
3575 else
3576 strcpy(lang, "LANG=C");
3577
3578 strcpy(remote_addr, "REMOTE_ADDR=");
3579 httpAddrString(con->http.hostaddr, remote_addr + 12,
3580 sizeof(remote_addr) - 12);
3581
3582 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
3583 con->http.hostname);
3584
3585 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
3586 if ((uriptr = strchr(script_name, '?')) != NULL)
3587 *uriptr = '\0';
3588
3589 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
3590
3591 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3592 con->servername);
3593
3594 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
3595
3596 envp[envc ++] = lang;
3597 envp[envc ++] = "REDIRECT_STATUS=1";
3598 envp[envc ++] = server_name;
3599 envp[envc ++] = server_port;
3600 envp[envc ++] = remote_addr;
3601 envp[envc ++] = remote_host;
3602 envp[envc ++] = script_name;
3603
b423cd4c 3604 if (path_info[0])
3605 envp[envc ++] = path_info;
3606
ef416fc2 3607 if (con->username[0])
3608 {
3609 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
3610
3611 envp[envc ++] = remote_user;
3612 }
3613
3614 if (con->http.version == HTTP_1_1)
3615 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
3616 else if (con->http.version == HTTP_1_0)
3617 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
3618 else
3619 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
3620
3621 if (con->http.cookie)
3622 {
3623 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
3624 con->http.cookie);
3625 envp[envc ++] = http_cookie;
3626 }
3627
3628 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
3629 {
3630 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
3631 con->http.fields[HTTP_FIELD_USER_AGENT]);
3632 envp[envc ++] = http_user_agent;
3633 }
3634
3635 if (con->operation == HTTP_GET)
3636 {
3637 for (i = 0; i < argc; i ++)
3638 cupsdLogMessage(CUPSD_LOG_DEBUG2, "argv[%d] = \"%s\"", i, argv[i]);
3639
3640 envp[envc ++] = "REQUEST_METHOD=GET";
3641
3642 if (query_string)
3643 {
3644 /*
3645 * Add GET form variables after ?...
3646 */
3647
3648 envp[envc ++] = query_string;
3649 }
3650 }
3651 else
3652 {
e1d6a774 3653 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
3654 CUPS_LLCAST con->bytes);
ef416fc2 3655 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
3656 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
3657
3658 envp[envc ++] = "REQUEST_METHOD=POST";
3659 envp[envc ++] = content_length;
3660 envp[envc ++] = content_type;
3661 }
3662
3663 /*
3664 * Tell the CGI if we are using encryption...
3665 */
3666
3667 if (con->http.encryption == HTTP_ENCRYPT_ALWAYS)
3668 envp[envc ++] = "HTTPS=ON";
3669
3670 /*
3671 * Terminate the environment array...
3672 */
3673
3674 envp[envc] = NULL;
3675
3676 if (LogLevel == CUPSD_LOG_DEBUG2)
3677 {
3678 for (i = 0; i < argc; i ++)
3679 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3680 "pipe_command: argv[%d] = \"%s\"", i, argv[i]);
3681 for (i = 0; i < envc; i ++)
3682 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3683 "pipe_command: envp[%d] = \"%s\"", i, envp[i]);
3684 }
3685
3686 /*
3687 * Create a pipe for the output...
3688 */
3689
3690 if (cupsdOpenPipe(fds))
3691 {
3692 cupsdClearString(&query_string);
3693
3694 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create pipes for CGI %s - %s",
3695 argv[0], strerror(errno));
3696 return (0);
3697 }
3698
3699 /*
3700 * Then execute the command...
3701 */
3702
3703 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
3704 -1, root, &pid) < 0)
3705 {
3706 /*
3707 * Error - can't fork!
3708 */
3709
3710 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to fork for CGI %s - %s", argv[0],
3711 strerror(errno));
3712
3713 cupsdClosePipe(fds);
3714 pid = 0;
3715 }
3716 else
3717 {
3718 /*
3719 * Fork successful - return the PID...
3720 */
3721
3722 if (con->username[0])
3723 cupsdAddCert(pid, con->username);
3724
3725 cupsdLogMessage(CUPSD_LOG_DEBUG, "CGI %s started - PID = %d", command, pid);
3726
3727 *outfile = fds[0];
3728 close(fds[1]);
3729 }
3730
3731 cupsdClearString(&query_string);
3732
3733 return (pid);
3734}
3735
3736
3737/*
e1d6a774 3738 * 'send_file()' - Send a file via HTTP.
3739 */
3740
3741static int /* O - 0 on failure, 1 on success */
3742send_file(cupsd_client_t *con, /* I - Client connection */
3743 http_status_t code, /* I - HTTP status */
3744 char *filename, /* I - Filename */
3745 char *type, /* I - File type */
3746 struct stat *filestats) /* O - File information */
3747{
3748 con->file = open(filename, O_RDONLY);
3749
3750 cupsdLogMessage(CUPSD_LOG_DEBUG, "send_file: %d file=%d", con->http.fd,
3751 con->file);
3752
3753 if (con->file < 0)
3754 return (0);
3755
3756 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
3757
3758 con->pipe_pid = 0;
3759
3760 if (!cupsdSendHeader(con, code, type))
3761 return (0);
3762
3763 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
3764 httpGetDateString(filestats->st_mtime)) < 0)
3765 return (0);
3766 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
3767 CUPS_LLCAST filestats->st_size) < 0)
3768 return (0);
3769 if (httpPrintf(HTTP(con), "\r\n") < 0)
3770 return (0);
3771
3772 con->http.data_encoding = HTTP_ENCODE_LENGTH;
3773 con->http.data_remaining = filestats->st_size;
3774
3775 if (con->http.data_remaining <= INT_MAX)
3776 con->http._data_remaining = con->http.data_remaining;
3777 else
3778 con->http._data_remaining = INT_MAX;
3779
3780 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3781 "send_file: Adding fd %d to OutputSet...", con->http.fd);
3782
3783 FD_SET(con->http.fd, OutputSet);
3784
3785 return (1);
3786}
3787
3788
3789/*
80ca4592 3790 * End of "$Id: client.c 5335 2006-03-24 02:56:20Z mike $".
ef416fc2 3791 */
Unnamed repository; edit this file 'description' to name the repository.