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[thirdparty/cups.git] / scheduler / client.c
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ef416fc2 1/*
cb7f98ee 2 * "$Id: client.c 10886 2013-03-08 17:56:02Z mike $"
ef416fc2 3 *
10d09e33 4 * Client routines for the CUPS scheduler.
ef416fc2 5 *
cb7f98ee 6 * Copyright 2007-2013 by Apple Inc.
f7deaa1a 7 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
8 *
9 * This file contains Kerberos support code, copyright 2006 by
10 * Jelmer Vernooij.
ef416fc2 11 *
12 * These coded instructions, statements, and computer programs are the
bc44d920 13 * property of Apple Inc. and are protected by Federal copyright
14 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
15 * which should have been included with this file. If this file is
16 * file is missing or damaged, see the license at "http://www.cups.org/".
ef416fc2 17 *
18 * Contents:
19 *
82cc1f9a
MS		 20 * cupsdAcceptClient() - Accept a new client.
21 * cupsdCloseAllClients() - Close all remote clients immediately.
22 * cupsdCloseClient() - Close a remote client.
23 * cupsdFlushHeader() - Flush the header fields to the client.
24 * cupsdReadClient() - Read data from a client.
25 * cupsdSendCommand() - Send output from a command via HTTP.
26 * cupsdSendError() - Send an error message via HTTP.
27 * cupsdSendHeader() - Send an HTTP request.
28 * cupsdUpdateCGI() - Read status messages from CGI scripts and
29 * programs.
30 * cupsdWriteClient() - Write data to a client as needed.
31 * check_if_modified() - Decode an "If-Modified-Since" line.
32 * compare_clients() - Compare two client connections.
33 * data_ready() - Check whether data is available from a client.
34 * get_file() - Get a filename and state info.
c41769ff 35 * install_cupsd_conf() - Install a configuration file.
82cc1f9a
MS		 36 * is_cgi() - Is the resource a CGI script/program?
37 * is_path_absolute() - Is a path absolute and free of relative elements
38 * (i.e. "..").
39 * pipe_command() - Pipe the output of a command to the remote
40 * client.
41 * valid_host() - Is the Host: field valid?
42 * write_file() - Send a file via HTTP.
43 * write_pipe() - Flag that data is available on the CGI pipe.
ef416fc2 44 */
45
46/*
47 * Include necessary headers...
48 */
49
ef416fc2 50#include "cupsd.h"
51
cb7f98ee
MS		 52#ifdef __APPLE__
53# include <libproc.h>
54#endif /* __APPLE__ */
749b1e90
MS		 55#ifdef HAVE_TCPD_H
56# include <tcpd.h>
57#endif /* HAVE_TCPD_H */
58
ef416fc2 59
85dda01c
MS		 60/*
61 * Local globals...
62 */
63
64static const char * const http_states[] =
65 { /* HTTP state strings */
a469f8a5
MS		 66 "HTTP_STATE_ERROR",
67 "HTTP_STATE_WAITING",
68 "HTTP_STATE_OPTIONS",
69 "HTTP_STATE_GET",
70 "HTTP_STATE_GET_SEND",
71 "HTTP_STATE_HEAD",
72 "HTTP_STATE_POST",
73 "HTTP_STATE_POST_RECV",
74 "HTTP_STATE_POST_SEND",
75 "HTTP_STATE_PUT",
76 "HTTP_STATE_PUT_RECV",
77 "HTTP_STATE_DELETE",
78 "HTTP_STATE_TRACE",
79 "HTTP_STATE_CONNECT",
80 "HTTP_STATE_STATUS",
81 "HTTP_STATE_UNKNOWN_METHOD",
82 "HTTP_STATE_UNKNOWN_VERSION"
85dda01c
MS		 83 };
84static const char * const ipp_states[] =
85 { /* IPP state strings */
86 "IPP_IDLE",
87 "IPP_HEADER",
88 "IPP_ATTRIBUTE",
89 "IPP_DATA"
90 };
91
92
ef416fc2 93/*
94 * Local functions...
95 */
96
97static int check_if_modified(cupsd_client_t *con,
98 struct stat *filestats);
3dfe78b3
MS		 99static int compare_clients(cupsd_client_t *a, cupsd_client_t *b,
100 void *data);
ee571f26 101static int data_ready(cupsd_client_t *con);
f7deaa1a 102static char *get_file(cupsd_client_t *con, struct stat *filestats,
ef416fc2 103 char *filename, int len);
c41769ff 104static http_status_t install_cupsd_conf(cupsd_client_t *con);
e1d6a774 105static int is_cgi(cupsd_client_t *con, const char *filename,
106 struct stat *filestats, mime_type_t *type);
ef416fc2 107static int is_path_absolute(const char *path);
108static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
109 char *command, char *options, int root);
e07d4801 110static int valid_host(cupsd_client_t *con);
a74454a7 111static int write_file(cupsd_client_t *con, http_status_t code,
112 char *filename, char *type,
113 struct stat *filestats);
f899b121 114static void write_pipe(cupsd_client_t *con);
ef416fc2 115
116
117/*
118 * 'cupsdAcceptClient()' - Accept a new client.
119 */
120
121void
122cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
123{
ef416fc2 124 int count; /* Count of connections on a host */
125 int val; /* Parameter value */
bd7854cb 126 cupsd_client_t *con, /* New client pointer */
127 *tempcon; /* Temporary client pointer */
ef416fc2 128 http_addrlist_t *addrlist, /* List of adddresses for host */
129 *addr; /* Current address */
130 socklen_t addrlen; /* Length of address */
131 char *hostname; /* Hostname for address */
132 http_addr_t temp; /* Temporary address variable */
133 static time_t last_dos = 0; /* Time of last DoS attack */
749b1e90
MS		 134#ifdef HAVE_TCPD_H
135 struct request_info wrap_req; /* TCP wrappers request information */
136#endif /* HAVE_TCPD_H */
ef416fc2 137
138
139 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1 140 "cupsdAcceptClient(lis=%p(%d)) Clients=%d",
bd7854cb 141 lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 142
143 /*
144 * Make sure we don't have a full set of clients already...
145 */
146
bd7854cb 147 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 148 return;
149
150 /*
151 * Get a pointer to the next available client...
152 */
153
bd7854cb 154 if (!Clients)
155 Clients = cupsArrayNew(NULL, NULL);
156
157 if (!Clients)
91c84a35
MS		 158 {
159 cupsdLogMessage(CUPSD_LOG_ERROR,
3dfe78b3
MS		 160 "Unable to allocate memory for clients array!");
161 cupsdPauseListening();
162 return;
163 }
164
165 if (!ActiveClients)
166 ActiveClients = cupsArrayNew((cups_array_func_t)compare_clients, NULL);
167
168 if (!ActiveClients)
169 {
170 cupsdLogMessage(CUPSD_LOG_ERROR,
171 "Unable to allocate memory for active clients array!");
91c84a35 172 cupsdPauseListening();
bd7854cb 173 return;
91c84a35 174 }
bd7854cb 175
91c84a35
MS		 176 if ((con = calloc(1, sizeof(cupsd_client_t))) == NULL)
177 {
178 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to allocate memory for client!");
179 cupsdPauseListening();
180 return;
181 }
ef416fc2 182
85dda01c 183 con->file = -1;
dcb445bc 184 con->http.activity = time(NULL);
85dda01c
MS		 185 con->http.hostaddr = &(con->clientaddr);
186 con->http.wait_value = 10000;
c41769ff 187 con->http.mode = _HTTP_MODE_SERVER;
ef416fc2 188
189 /*
190 * Accept the client and get the remote address...
191 */
192
193 addrlen = sizeof(http_addr_t);
194
195 if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
196 &addrlen)) < 0)
197 {
76cd9e37
MS		 198 if (errno == ENFILE || errno == EMFILE)
199 cupsdPauseListening();
200
ef416fc2 201 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
202 strerror(errno));
bd7854cb 203 free(con);
76cd9e37 204
ef416fc2 205 return;
206 }
207
22c9029b
MS		 208 /*
209 * Save the connected port number...
210 */
ef416fc2 211
a469f8a5 212 _httpAddrSetPort(con->http.hostaddr, httpAddrPort(&(lis->address)));
ef416fc2 213
22c9029b
MS		 214#ifdef AF_INET6
215 /*
216 * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
217 * can more easily use...
218 */
ef416fc2 219
22c9029b
MS		 220 if (lis->address.addr.sa_family == AF_INET6 &&
221 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
222 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
223 ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
224 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
ef416fc2 225#endif /* AF_INET6 */
ef416fc2 226
227 /*
228 * Check the number of clients on the same address...
229 */
230
bd7854cb 231 for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
232 tempcon;
233 tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
234 if (httpAddrEqual(tempcon->http.hostaddr, con->http.hostaddr))
ef416fc2 235 {
236 count ++;
237 if (count >= MaxClientsPerHost)
238 break;
239 }
240
241 if (count >= MaxClientsPerHost)
242 {
243 if ((time(NULL) - last_dos) >= 60)
244 {
245 last_dos = time(NULL);
246 cupsdLogMessage(CUPSD_LOG_WARN,
bd7854cb 247 "Possible DoS attack - more than %d clients connecting "
248 "from %s!",
749b1e90
MS		 249 MaxClientsPerHost,
250 httpAddrString(con->http.hostaddr, con->http.hostname,
251 sizeof(con->http.hostname)));
ef416fc2 252 }
253
254#ifdef WIN32
255 closesocket(con->http.fd);
256#else
257 close(con->http.fd);
258#endif /* WIN32 */
259
bd7854cb 260 free(con);
ef416fc2 261 return;
262 }
263
264 /*
265 * Get the hostname or format the IP address as needed...
266 */
267
268 if (httpAddrLocalhost(con->http.hostaddr))
269 {
270 /*
271 * Map accesses from the loopback interface to "localhost"...
272 */
273
274 strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
275 hostname = con->http.hostname;
276 }
277 else
278 {
279 /*
280 * Map accesses from the same host to the server name.
281 */
282
d1c13e16 283 if (HostNameLookups)
ef416fc2 284 hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
285 sizeof(con->http.hostname));
286 else
287 {
288 hostname = NULL;
289 httpAddrString(con->http.hostaddr, con->http.hostname,
290 sizeof(con->http.hostname));
291 }
292 }
293
294 if (hostname == NULL && HostNameLookups == 2)
295 {
296 /*
297 * Can't have an unresolved IP address with double-lookups enabled...
298 */
299
ef416fc2 300#ifdef WIN32
301 closesocket(con->http.fd);
302#else
303 close(con->http.fd);
304#endif /* WIN32 */
305
306 cupsdLogMessage(CUPSD_LOG_WARN,
307 "Name lookup failed - connection from %s closed!",
308 con->http.hostname);
bd7854cb 309
310 free(con);
ef416fc2 311 return;
312 }
313
314 if (HostNameLookups == 2)
315 {
316 /*
317 * Do double lookups as needed...
318 */
319
749b1e90
MS		 320 if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL))
321 != NULL)
ef416fc2 322 {
323 /*
324 * See if the hostname maps to the same IP address...
325 */
326
327 for (addr = addrlist; addr; addr = addr->next)
328 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
329 break;
330 }
331 else
332 addr = NULL;
333
334 httpAddrFreeList(addrlist);
335
336 if (!addr)
337 {
338 /*
339 * Can't have a hostname that doesn't resolve to the same IP address
340 * with double-lookups enabled...
341 */
342
ef416fc2 343#ifdef WIN32
344 closesocket(con->http.fd);
345#else
346 close(con->http.fd);
347#endif /* WIN32 */
348
349 cupsdLogMessage(CUPSD_LOG_WARN,
350 "IP lookup failed - connection from %s closed!",
351 con->http.hostname);
bd7854cb 352 free(con);
ef416fc2 353 return;
354 }
355 }
356
749b1e90
MS		 357#ifdef HAVE_TCPD_H
358 /*
359 * See if the connection is denied by TCP wrappers...
360 */
361
362 request_init(&wrap_req, RQ_DAEMON, "cupsd", RQ_FILE, con->http.fd, NULL);
363 fromhost(&wrap_req);
364
365 if (!hosts_access(&wrap_req))
366 {
749b1e90
MS		 367#ifdef WIN32
368 closesocket(con->http.fd);
369#else
370 close(con->http.fd);
371#endif /* WIN32 */
372
373 cupsdLogMessage(CUPSD_LOG_WARN,
374 "Connection from %s refused by /etc/hosts.allow and "
375 "/etc/hosts.deny rules.", con->http.hostname);
376 free(con);
377 return;
378 }
379#endif /* HAVE_TCPD_H */
380
ef416fc2 381#ifdef AF_LOCAL
382 if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
cb7f98ee
MS		 383 {
384# ifdef __APPLE__
385 socklen_t peersize; /* Size of peer credentials */
386 pid_t peerpid; /* Peer process ID */
387 char name[256]; /* Name of process */
388
389 peersize = sizeof(peerpid);
390 if (!getsockopt(con->http.fd, SOL_LOCAL, LOCAL_PEERPID, &peerpid,
391 &peersize))
392 {
393 if (!proc_name(peerpid, name, sizeof(name)))
394 cupsdLogMessage(CUPSD_LOG_DEBUG,
395 "[Client %d] Accepted from %s (Domain ???[%d])",
396 con->http.fd, con->http.hostname, (int)peerpid);
397 else
398 cupsdLogMessage(CUPSD_LOG_DEBUG,
399 "[Client %d] Accepted from %s (Domain %s[%d])",
400 con->http.fd, con->http.hostname, name, (int)peerpid);
401 }
402 else
403# endif /* __APPLE__ */
404
85dda01c 405 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Accepted from %s (Domain)",
ef416fc2 406 con->http.fd, con->http.hostname);
cb7f98ee 407 }
ef416fc2 408 else
409#endif /* AF_LOCAL */
85dda01c 410 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Accepted from %s:%d (IPv%d)",
ef416fc2 411 con->http.fd, con->http.hostname,
a469f8a5 412 httpAddrPort(con->http.hostaddr),
22c9029b 413 _httpAddrFamily(con->http.hostaddr) == AF_INET ? 4 : 6);
ef416fc2 414
415 /*
416 * Get the local address the client connected to...
417 */
418
419 addrlen = sizeof(temp);
420 if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
421 {
422 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
423 strerror(errno));
424
5a9febac 425 strlcpy(con->servername, "localhost", sizeof(con->servername));
ef416fc2 426 con->serverport = LocalPort;
427 }
22c9029b
MS		 428#ifdef AF_LOCAL
429 else if (_httpAddrFamily(&temp) == AF_LOCAL)
430 {
5a9febac 431 strlcpy(con->servername, "localhost", sizeof(con->servername));
22c9029b
MS		 432 con->serverport = LocalPort;
433 }
434#endif /* AF_LOCAL */
ef416fc2 435 else
436 {
22c9029b
MS		 437 if (httpAddrLocalhost(&temp))
438 strlcpy(con->servername, "localhost", sizeof(con->servername));
439 else if (HostNameLookups || RemotePort)
440 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
ef416fc2 441 else
22c9029b 442 httpAddrString(&temp, con->servername, sizeof(con->servername));
b19ccc9e 443
a469f8a5 444 con->serverport = httpAddrPort(&(lis->address));
ef416fc2 445 }
446
dcb445bc
MS		 447 /*
448 * Add the connection to the array of active clients...
449 */
450
bd7854cb 451 cupsArrayAdd(Clients, con);
452
ef416fc2 453 /*
b9faaae1
MS		 454 * Using TCP_NODELAY improves responsiveness, especially on systems with a slow
455 * loopback interface. Since we write large buffers when sending print files
456 * and requests there shouldn't be any performance penalty for this...
ef416fc2 457 */
458
459 val = 1;
f7deaa1a 460 setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
ef416fc2 461
462 /*
463 * Close this file on all execs...
464 */
465
466 fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
467
468 /*
b9faaae1 469 * Add the socket to the server select.
ef416fc2 470 */
471
f7deaa1a 472 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 473
ef416fc2 474 /*
475 * Temporarily suspend accept()'s until we lose a client...
476 */
477
bd7854cb 478 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 479 cupsdPauseListening();
480
481#ifdef HAVE_SSL
482 /*
483 * See if we are connecting on a secure port...
484 */
485
486 if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
487 {
488 /*
489 * https connection; go secure...
490 */
491
492 con->http.encryption = HTTP_ENCRYPT_ALWAYS;
493
82cc1f9a 494 if (!cupsdStartTLS(con))
411affcf 495 cupsdCloseClient(con);
ef416fc2 496 }
497 else
498 con->auto_ssl = 1;
499#endif /* HAVE_SSL */
500}
501
502
503/*
504 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
505 */
506
507void
508cupsdCloseAllClients(void)
509{
bd7854cb 510 cupsd_client_t *con; /* Current client */
511
512
b9faaae1
MS		 513 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdCloseAllClients() Clients=%d",
514 cupsArrayCount(Clients));
515
bd7854cb 516 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
517 con;
518 con = (cupsd_client_t *)cupsArrayNext(Clients))
49d87452
MS		 519 if (cupsdCloseClient(con))
520 cupsdCloseClient(con);
ef416fc2 521}
522
523
524/*
525 * 'cupsdCloseClient()' - Close a remote client.
526 */
527
528int /* O - 1 if partial close, 0 if fully closed */
529cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
530{
531 int partial; /* Do partial close for SSL? */
532#ifdef HAVE_LIBSSL
ef416fc2 533#elif defined(HAVE_GNUTLS)
89d46774 534# elif defined(HAVE_CDSASSL)
ef416fc2 535#endif /* HAVE_LIBSSL */
536
537
85dda01c
MS		 538 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Closing connection.",
539 con->http.fd);
ef416fc2 540
541 /*
542 * Flush pending writes before closing...
543 */
544
545 httpFlushWrite(HTTP(con));
546
547 partial = 0;
548
549#ifdef HAVE_SSL
550 /*
551 * Shutdown encryption as needed...
552 */
553
554 if (con->http.tls)
555 {
556 partial = 1;
557
82cc1f9a 558 cupsdEndTLS(con);
ef416fc2 559 }
560#endif /* HAVE_SSL */
561
562 if (con->pipe_pid != 0)
563 {
564 /*
565 * Stop any CGI process...
566 */
567
ef416fc2 568 cupsdEndProcess(con->pipe_pid, 1);
569 con->pipe_pid = 0;
570 }
571
572 if (con->file >= 0)
573 {
f7deaa1a 574 cupsdRemoveSelect(con->file);
ef416fc2 575
ef416fc2 576 close(con->file);
577 con->file = -1;
578 }
579
580 /*
581 * Close the socket and clear the file from the input set for select()...
582 */
583
3dfe78b3 584 if (con->http.fd >= 0)
ef416fc2 585 {
3dfe78b3
MS		 586 cupsArrayRemove(ActiveClients, con);
587 cupsdSetBusyState();
588
ef416fc2 589 if (partial)
590 {
591 /*
592 * Only do a partial close so that the encrypted client gets everything.
593 */
594
ef416fc2 595 shutdown(con->http.fd, 0);
f7deaa1a 596 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 597 }
598 else
599 {
600 /*
601 * Shut the socket down fully...
602 */
603
f7deaa1a 604 cupsdRemoveSelect(con->http.fd);
ef416fc2 605 close(con->http.fd);
ef416fc2 606 con->http.fd = -1;
607 }
608 }
609
610 if (!partial)
611 {
612 /*
613 * Free memory...
614 */
615
616 if (con->http.input_set)
617 free(con->http.input_set);
618
619 httpClearCookie(HTTP(con));
9f5eb9be 620 httpClearFields(HTTP(con));
ef416fc2 621
622 cupsdClearString(&con->filename);
623 cupsdClearString(&con->command);
624 cupsdClearString(&con->options);
b86bc4cf 625 cupsdClearString(&con->query_string);
ef416fc2 626
627 if (con->request)
628 {
629 ippDelete(con->request);
630 con->request = NULL;
631 }
632
633 if (con->response)
634 {
635 ippDelete(con->response);
636 con->response = NULL;
637 }
638
639 if (con->language)
640 {
641 cupsLangFree(con->language);
642 con->language = NULL;
643 }
644
f7deaa1a 645#ifdef HAVE_AUTHORIZATION_H
646 if (con->authref)
647 {
648 AuthorizationFree(con->authref, kAuthorizationFlagDefaults);
649 con->authref = NULL;
650 }
651#endif /* HAVE_AUTHORIZATION_H */
652
ef416fc2 653 /*
654 * Re-enable new client connections if we are going back under the
655 * limit...
656 */
657
bd7854cb 658 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 659 cupsdResumeListening();
660
661 /*
662 * Compact the list of clients as necessary...
663 */
664
bd7854cb 665 cupsArrayRemove(Clients, con);
ef416fc2 666
bd7854cb 667 free(con);
ef416fc2 668 }
669
670 return (partial);
671}
672
673
d09495fa 674/*
675 * 'cupsdFlushHeader()' - Flush the header fields to the client.
676 */
677
07725fee 678int /* I - Bytes written or -1 on error */
d09495fa 679cupsdFlushHeader(cupsd_client_t *con) /* I - Client to flush to */
680{
07725fee 681 int bytes = httpFlushWrite(HTTP(con));
d09495fa 682
cb7f98ee 683 con->http.data_encoding = HTTP_ENCODING_LENGTH;
07725fee 684
685 return (bytes);
d09495fa 686}
687
688
ef416fc2 689/*
690 * 'cupsdReadClient()' - Read data from a client.
691 */
692
f7deaa1a 693void
ef416fc2 694cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
695{
696 char line[32768], /* Line from client... */
697 operation[64], /* Operation code from socket */
698 version[64], /* HTTP version number string */
699 locale[64], /* Locale */
700 *ptr; /* Pointer into strings */
701 int major, minor; /* HTTP version numbers */
702 http_status_t status; /* Transfer status */
703 ipp_state_t ipp_state; /* State of IPP transfer */
704 int bytes; /* Number of bytes to POST */
705 char *filename; /* Name of file for GET/HEAD */
706 char buf[1024]; /* Buffer for real filename */
707 struct stat filestats; /* File information */
708 mime_type_t *type; /* MIME type of file */
709 cupsd_printer_t *p; /* Printer */
710 static unsigned request_id = 0; /* Request ID for temp files */
711
712
713 status = HTTP_CONTINUE;
714
715 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 716 "[Client %d] cupsdReadClient "
717 "error=%d, "
718 "used=%d, "
719 "state=%s, "
a469f8a5 720 "data_encoding=HTTP_ENCODING_%s, "
85dda01c
MS		 721 "data_remaining=" CUPS_LLFMT ", "
722 "request=%p(%s), "
723 "file=%d",
724 con->http.fd, con->http.error, con->http.used,
a469f8a5 725 http_states[con->http.state + 1],
cb7f98ee 726 con->http.data_encoding == HTTP_ENCODING_CHUNKED ?
b9faaae1 727 "CHUNKED" : "LENGTH",
85dda01c
MS		 728 CUPS_LLCAST con->http.data_remaining,
729 con->request,
730 con->request ? ipp_states[con->request->state] : "",
731 con->file);
ef416fc2 732
ef416fc2 733#ifdef HAVE_SSL
734 if (con->auto_ssl)
735 {
736 /*
737 * Automatically check for a SSL/TLS handshake...
738 */
739
740 con->auto_ssl = 0;
741
742 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
743 (!buf[0] || !strchr("DGHOPT", buf[0])))
744 {
745 /*
746 * Encrypt this connection...
747 */
748
749 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 750 "[Client %d] Saw first byte %02X, auto-negotiating "
751 "SSL/TLS session.", con->http.fd, buf[0] & 255);
ef416fc2 752
82cc1f9a 753 if (!cupsdStartTLS(con))
f7deaa1a 754 cupsdCloseClient(con);
411affcf 755
f7deaa1a 756 return;
ef416fc2 757 }
758 }
759#endif /* HAVE_SSL */
760
761 switch (con->http.state)
762 {
cb7f98ee 763 case HTTP_STATE_WAITING :
ef416fc2 764 /*
765 * See if we've received a request line...
766 */
767
768 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
769 {
f11a948a
MS		 770 if (con->http.error && con->http.error != EPIPE)
771 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 772 "[Client %d] HTTP_STATE_WAITING Closing for error %d "
f11a948a
MS		 773 "(%s)", con->http.fd, con->http.error,
774 strerror(con->http.error));
775 else
776 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 777 "[Client %d] HTTP_STATE_WAITING Closing on EOF",
f11a948a
MS		 778 con->http.fd);
779
f7deaa1a 780 cupsdCloseClient(con);
781 return;
ef416fc2 782 }
783
784 /*
785 * Ignore blank request lines...
786 */
787
788 if (line[0] == '\0')
789 break;
790
791 /*
792 * Clear other state variables...
793 */
794
795 httpClearFields(HTTP(con));
796
797 con->http.activity = time(NULL);
798 con->http.version = HTTP_1_0;
799 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
cb7f98ee 800 con->http.data_encoding = HTTP_ENCODING_LENGTH;
ef416fc2 801 con->http.data_remaining = 0;
802 con->http._data_remaining = 0;
cb7f98ee 803 con->operation = HTTP_STATE_WAITING;
ef416fc2 804 con->bytes = 0;
805 con->file = -1;
806 con->file_ready = 0;
807 con->pipe_pid = 0;
808 con->username[0] = '\0';
809 con->password[0] = '\0';
810 con->uri[0] = '\0';
811
812 cupsdClearString(&con->command);
813 cupsdClearString(&con->options);
b86bc4cf 814 cupsdClearString(&con->query_string);
ef416fc2 815
2abf387c 816 if (con->request)
817 {
818 ippDelete(con->request);
819 con->request = NULL;
820 }
821
822 if (con->response)
823 {
824 ippDelete(con->response);
825 con->response = NULL;
826 }
827
828 if (con->language)
ef416fc2 829 {
830 cupsLangFree(con->language);
831 con->language = NULL;
832 }
833
09a101d6 834#ifdef HAVE_GSSAPI
97c9a8d7 835 con->have_gss = 0;
07ed0e9a 836 con->gss_uid = 0;
09a101d6 837#endif /* HAVE_GSSAPI */
838
ef416fc2 839 /*
840 * Grab the request line...
841 */
842
843 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
844 {
845 case 1 :
c934a06c
MS		 846 if (line[0])
847 {
848 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 849 "[Client %d] Bad request line \"%s\" from %s.",
850 con->http.fd,
c8fef167 851 _httpEncodeURI(buf, line, sizeof(buf)),
c934a06c
MS		 852 con->http.hostname);
853 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
854 cupsdCloseClient(con);
855 }
f7deaa1a 856 return;
ef416fc2 857 case 2 :
858 con->http.version = HTTP_0_9;
859 break;
860 case 3 :
861 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
862 {
863 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 864 "[Client %d] Bad request line \"%s\" from %s.",
865 con->http.fd,
c8fef167 866 _httpEncodeURI(buf, line, sizeof(buf)),
ef416fc2 867 con->http.hostname);
5bd77a73 868 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 869 cupsdCloseClient(con);
870 return;
ef416fc2 871 }
872
873 if (major < 2)
874 {
875 con->http.version = (http_version_t)(major * 100 + minor);
876 if (con->http.version == HTTP_1_1 && KeepAlive)
877 con->http.keep_alive = HTTP_KEEPALIVE_ON;
878 else
879 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
880 }
881 else
882 {
f11a948a 883 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 884 "[Client %d] Unsupported request line \"%s\" "
885 "from %s.", con->http.fd,
c8fef167
MS		 886 _httpEncodeURI(buf, line, sizeof(buf)),
887 con->http.hostname);
5bd77a73 888 cupsdSendError(con, HTTP_NOT_SUPPORTED, CUPSD_AUTH_NONE);
f7deaa1a 889 cupsdCloseClient(con);
890 return;
ef416fc2 891 }
892 break;
893 }
894
895 /*
896 * Handle full URLs in the request line...
897 */
898
899 if (strcmp(con->uri, "*"))
900 {
e6013cfa 901 char scheme[HTTP_MAX_URI], /* Method/scheme */
ef416fc2 902 userpass[HTTP_MAX_URI], /* Username:password */
903 hostname[HTTP_MAX_URI], /* Hostname */
904 resource[HTTP_MAX_URI]; /* Resource path */
905 int port; /* Port number */
906
907
908 /*
909 * Separate the URI into its components...
910 */
911
a4d04587 912 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
e6013cfa 913 scheme, sizeof(scheme),
ef416fc2 914 userpass, sizeof(userpass),
915 hostname, sizeof(hostname), &port,
916 resource, sizeof(resource));
917
918 /*
919 * Only allow URIs with the servername, localhost, or an IP
920 * address...
921 */
922
e6013cfa 923 if (strcmp(scheme, "file") &&
88f9aafc
MS		 924 _cups_strcasecmp(hostname, ServerName) &&
925 _cups_strcasecmp(hostname, "localhost") &&
e6013cfa 926 !isdigit(hostname[0]) && hostname[0] != '[')
ef416fc2 927 {
928 /*
929 * Nope, we don't do proxies...
930 */
931
85dda01c
MS		 932 cupsdLogMessage(CUPSD_LOG_ERROR,
933 "[Client %d] Bad URI \"%s\" in request.",
934 con->http.fd, con->uri);
5bd77a73 935 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE);
f7deaa1a 936 cupsdCloseClient(con);
937 return;
ef416fc2 938 }
939
940 /*
941 * Copy the resource portion back into the URI; both resource and
942 * con->uri are HTTP_MAX_URI bytes in size...
943 */
944
5a9febac 945 strlcpy(con->uri, resource, sizeof(con->uri));
ef416fc2 946 }
947
948 /*
949 * Process the request...
950 */
951
952 if (!strcmp(operation, "GET"))
cb7f98ee 953 con->http.state = HTTP_STATE_GET;
ef416fc2 954 else if (!strcmp(operation, "PUT"))
cb7f98ee 955 con->http.state = HTTP_STATE_PUT;
ef416fc2 956 else if (!strcmp(operation, "POST"))
cb7f98ee 957 con->http.state = HTTP_STATE_POST;
ef416fc2 958 else if (!strcmp(operation, "DELETE"))
cb7f98ee 959 con->http.state = HTTP_STATE_DELETE;
ef416fc2 960 else if (!strcmp(operation, "TRACE"))
cb7f98ee 961 con->http.state = HTTP_STATE_TRACE;
ef416fc2 962 else if (!strcmp(operation, "OPTIONS"))
cb7f98ee 963 con->http.state = HTTP_STATE_OPTIONS;
ef416fc2 964 else if (!strcmp(operation, "HEAD"))
cb7f98ee 965 con->http.state = HTTP_STATE_HEAD;
ef416fc2 966 else
967 {
85dda01c
MS		 968 cupsdLogMessage(CUPSD_LOG_ERROR,
969 "[Client %d] Bad operation \"%s\".", con->http.fd,
970 operation);
5bd77a73 971 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 972 cupsdCloseClient(con);
973 return;
ef416fc2 974 }
975
dfd5680b 976 gettimeofday(&(con->start), NULL);
ef416fc2 977 con->operation = con->http.state;
978
85dda01c 979 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] %s %s HTTP/%d.%d",
89d46774 980 con->http.fd, operation, con->uri,
ef416fc2 981 con->http.version / 100, con->http.version % 100);
982
983 con->http.status = HTTP_OK;
984
49d87452
MS		 985 if (!cupsArrayFind(ActiveClients, con))
986 {
987 cupsArrayAdd(ActiveClients, con);
988 cupsdSetBusyState();
989 }
3dfe78b3 990
cb7f98ee
MS		 991 case HTTP_STATE_OPTIONS :
992 case HTTP_STATE_DELETE :
993 case HTTP_STATE_GET :
994 case HTTP_STATE_HEAD :
995 case HTTP_STATE_POST :
996 case HTTP_STATE_PUT :
997 case HTTP_STATE_TRACE :
ef416fc2 998 /*
999 * Parse incoming parameters until the status changes...
1000 */
1001
f7deaa1a 1002 while ((status = httpUpdate(HTTP(con))) == HTTP_CONTINUE)
ee571f26 1003 if (!data_ready(con))
f7deaa1a 1004 break;
ef416fc2 1005
1006 if (status != HTTP_OK && status != HTTP_CONTINUE)
1007 {
f11a948a
MS		 1008 if (con->http.error && con->http.error != EPIPE)
1009 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c
MS		 1010 "[Client %d] Closing for error %d (%s) while "
1011 "reading headers.",
1012 con->http.fd, con->http.error,
f11a948a
MS		 1013 strerror(con->http.error));
1014 else
1015 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c
MS		 1016 "[Client %d] Closing on EOF while reading headers.",
1017 con->http.fd);
f11a948a 1018
5bd77a73 1019 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 1020 cupsdCloseClient(con);
1021 return;
ef416fc2 1022 }
1023 break;
1024
1025 default :
e6013cfa
MS		 1026 if (!data_ready(con) && recv(con->http.fd, buf, 1, MSG_PEEK) < 1)
1027 {
1028 /*
1029 * Connection closed...
1030 */
1031
f11a948a 1032 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 1033 "[Client %d] Closing on EOF", con->http.fd);
e6013cfa
MS		 1034 cupsdCloseClient(con);
1035 return;
1036 }
ef416fc2 1037 break; /* Anti-compiler-warning-code */
1038 }
1039
1040 /*
1041 * Handle new transfers...
1042 */
1043
1044 if (status == HTTP_OK)
1045 {
1046 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
1047 {
1048 /*
1049 * Figure out the locale from the Accept-Language and Content-Type
1050 * fields...
1051 */
1052
f11a948a
MS		 1053 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE],
1054 ',')) != NULL)
ef416fc2 1055 *ptr = '\0';
1056
f11a948a
MS		 1057 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE],
1058 ';')) != NULL)
ef416fc2 1059 *ptr = '\0';
1060
f11a948a
MS		 1061 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1062 "charset=")) != NULL)
ef416fc2 1063 {
1064 /*
1065 * Combine language and charset, and trim any extra params in the
1066 * content-type.
1067 */
1068
1069 snprintf(locale, sizeof(locale), "%s.%s",
1070 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
1071
1072 if ((ptr = strchr(locale, ',')) != NULL)
1073 *ptr = '\0';
1074 }
1075 else
f8b3a85b
MS		 1076 snprintf(locale, sizeof(locale), "%s.UTF-8",
1077 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE]);
d6ae789d 1078
ef416fc2 1079 con->language = cupsLangGet(locale);
1080 }
1081 else
1082 con->language = cupsLangGet(DefaultLocale);
1083
1084 cupsdAuthorize(con);
1085
85dda01c
MS		 1086 if (!_cups_strncasecmp(con->http.fields[HTTP_FIELD_CONNECTION],
1087 "Keep-Alive", 10) && KeepAlive)
ef416fc2 1088 con->http.keep_alive = HTTP_KEEPALIVE_ON;
85dda01c
MS		 1089 else if (!_cups_strncasecmp(con->http.fields[HTTP_FIELD_CONNECTION],
1090 "close", 5))
52f6f666 1091 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
ef416fc2 1092
1093 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
1094 con->http.version >= HTTP_1_1)
1095 {
1096 /*
1097 * HTTP/1.1 and higher require the "Host:" field...
1098 */
1099
5bd77a73 1100 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1101 {
85dda01c
MS		 1102 cupsdLogMessage(CUPSD_LOG_ERROR,
1103 "[Client %d] Missing Host: field in request.",
1104 con->http.fd);
f7deaa1a 1105 cupsdCloseClient(con);
1106 return;
1107 }
ef416fc2 1108 }
e07d4801 1109 else if (!valid_host(con))
e6013cfa
MS		 1110 {
1111 /*
1112 * Access to localhost must use "localhost" or the corresponding IPv4
1113 * or IPv6 values in the Host: field.
1114 */
1115
f11a948a 1116 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1117 "[Client %d] Request from \"%s\" using invalid Host: "
1118 "field \"%s\"", con->http.fd, con->http.hostname,
1119 con->http.fields[HTTP_FIELD_HOST]);
e6013cfa
MS		 1120
1121 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
1122 {
1123 cupsdCloseClient(con);
1124 return;
1125 }
1126 }
cb7f98ee 1127 else if (con->operation == HTTP_STATE_OPTIONS)
ef416fc2 1128 {
1129 /*
1130 * Do OPTIONS command...
1131 */
1132
5bd77a73 1133 if (con->best && con->best->type != CUPSD_AUTH_NONE)
ef416fc2 1134 {
5bd77a73 1135 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1136 {
1137 cupsdCloseClient(con);
1138 return;
1139 }
ef416fc2 1140 }
1141
88f9aafc 1142 if (!_cups_strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
ef416fc2 1143 con->http.tls == NULL)
1144 {
1145#ifdef HAVE_SSL
1146 /*
1147 * Do encryption stuff...
1148 */
1149
5bd77a73 1150 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1151 {
1152 cupsdCloseClient(con);
1153 return;
1154 }
ef416fc2 1155
1156 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
a469f8a5 1157 httpPrintf(HTTP(con), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n");
ef416fc2 1158 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1159 httpPrintf(HTTP(con), "\r\n");
07725fee 1160
1161 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1162 {
1163 cupsdCloseClient(con);
1164 return;
1165 }
ef416fc2 1166
82cc1f9a 1167 if (!cupsdStartTLS(con))
f7deaa1a 1168 {
1169 cupsdCloseClient(con);
1170 return;
1171 }
ef416fc2 1172#else
5bd77a73 1173 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 1174 {
1175 cupsdCloseClient(con);
1176 return;
1177 }
ef416fc2 1178#endif /* HAVE_SSL */
1179 }
1180
5bd77a73 1181 if (!cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1182 {
1183 cupsdCloseClient(con);
1184 return;
1185 }
ef416fc2 1186
1187 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1188 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1189 httpPrintf(HTTP(con), "\r\n");
07725fee 1190
1191 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1192 {
1193 cupsdCloseClient(con);
1194 return;
1195 }
ef416fc2 1196 }
1197 else if (!is_path_absolute(con->uri))
1198 {
1199 /*
1200 * Protect against malicious users!
1201 */
1202
bf3816c7 1203 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1204 "[Client %d] Request for non-absolute resource \"%s\".",
1205 con->http.fd, con->uri);
bf3816c7 1206
5bd77a73 1207 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1208 {
1209 cupsdCloseClient(con);
1210 return;
1211 }
ef416fc2 1212 }
1213 else
1214 {
85dda01c
MS		 1215 if (!_cups_strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION],
1216 "Upgrade") && con->http.tls == NULL)
ef416fc2 1217 {
1218#ifdef HAVE_SSL
1219 /*
1220 * Do encryption stuff...
1221 */
1222
85dda01c
MS		 1223 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL,
1224 CUPSD_AUTH_NONE))
f7deaa1a 1225 {
1226 cupsdCloseClient(con);
1227 return;
1228 }
ef416fc2 1229
1230 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
a469f8a5 1231 httpPrintf(HTTP(con), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n");
ef416fc2 1232 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1233 httpPrintf(HTTP(con), "\r\n");
07725fee 1234
1235 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1236 {
1237 cupsdCloseClient(con);
1238 return;
1239 }
ef416fc2 1240
82cc1f9a 1241 if (!cupsdStartTLS(con))
f7deaa1a 1242 {
1243 cupsdCloseClient(con);
1244 return;
1245 }
ef416fc2 1246#else
5bd77a73 1247 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 1248 {
1249 cupsdCloseClient(con);
1250 return;
1251 }
ef416fc2 1252#endif /* HAVE_SSL */
1253 }
1254
1255 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1256 {
5bd77a73 1257 cupsdSendError(con, status, CUPSD_AUTH_NONE);
f7deaa1a 1258 cupsdCloseClient(con);
1259 return;
ef416fc2 1260 }
1261
b423cd4c 1262 if (con->http.expect &&
cb7f98ee 1263 (con->operation == HTTP_STATE_POST || con->operation == HTTP_STATE_PUT))
ef416fc2 1264 {
b423cd4c 1265 if (con->http.expect == HTTP_CONTINUE)
1266 {
1267 /*
1268 * Send 100-continue header...
1269 */
1270
5bd77a73 1271 if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1272 {
1273 cupsdCloseClient(con);
1274 return;
1275 }
b423cd4c 1276 }
1277 else
1278 {
1279 /*
1280 * Send 417-expectation-failed header...
1281 */
1282
f11a948a
MS		 1283 if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL,
1284 CUPSD_AUTH_NONE))
f7deaa1a 1285 {
1286 cupsdCloseClient(con);
1287 return;
1288 }
b423cd4c 1289
1290 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1291 httpPrintf(HTTP(con), "\r\n");
07725fee 1292
1293 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1294 {
1295 cupsdCloseClient(con);
1296 return;
1297 }
b423cd4c 1298 }
ef416fc2 1299 }
1300
1301 switch (con->http.state)
1302 {
cb7f98ee 1303 case HTTP_STATE_GET_SEND :
db8b865d
MS		 1304 if ((!strncmp(con->uri, "/ppd/", 5) ||
1305 !strncmp(con->uri, "/printers/", 10)) &&
ef416fc2 1306 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1307 {
1308 /*
1309 * Send PPD file - get the real printer name since printer
1310 * names are not case sensitive but filenames can be...
1311 */
1312
1313 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1314
db8b865d
MS		 1315 if (!strncmp(con->uri, "/ppd/", 5))
1316 p = cupsdFindPrinter(con->uri + 5);
1317 else
1318 p = cupsdFindPrinter(con->uri + 10);
1319
1320 if (p)
1321 {
ef416fc2 1322 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
db8b865d 1323 }
ef416fc2 1324 else
1325 {
5bd77a73 1326 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1327 {
1328 cupsdCloseClient(con);
1329 return;
1330 }
ef416fc2 1331
1332 break;
1333 }
1334 }
db8b865d
MS		 1335 else if ((!strncmp(con->uri, "/icons/", 7) ||
1336 !strncmp(con->uri, "/printers/", 10) ||
7cf5915e
MS		 1337 !strncmp(con->uri, "/classes/", 9)) &&
1338 !strcmp(con->uri + strlen(con->uri) - 4, ".png"))
1339 {
1340 /*
1341 * Send icon file - get the real queue name since queue names are
1342 * not case sensitive but filenames can be...
1343 */
1344
1345 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".png" */
1346
db8b865d
MS		 1347 if (!strncmp(con->uri, "/icons/", 7))
1348 p = cupsdFindPrinter(con->uri + 7);
1349 else if (!strncmp(con->uri, "/printers/", 10))
7cf5915e
MS		 1350 p = cupsdFindPrinter(con->uri + 10);
1351 else
1352 p = cupsdFindClass(con->uri + 9);
1353
1354 if (p)
1355 snprintf(con->uri, sizeof(con->uri), "/icons/%s.png", p->name);
1356 else
1357 {
1358 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
1359 {
1360 cupsdCloseClient(con);
1361 return;
1362 }
1363
1364 break;
1365 }
1366 }
0268488e 1367 else if (!WebInterface)
229681c1
MS		 1368 {
1369 /*
1370 * Web interface is disabled. Show an appropriate message...
1371 */
1372
1373 if (!cupsdSendError(con, HTTP_WEBIF_DISABLED, CUPSD_AUTH_NONE))
1374 {
1375 cupsdCloseClient(con);
1376 return;
1377 }
1378
1379 break;
1380 }
0268488e
MS		 1381
1382 if ((!strncmp(con->uri, "/admin", 6) &&
1383 strncmp(con->uri, "/admin/conf/", 12) &&
1384 strncmp(con->uri, "/admin/log/", 11)) ||
1385 !strncmp(con->uri, "/printers", 9) ||
1386 !strncmp(con->uri, "/classes", 8) ||
1387 !strncmp(con->uri, "/help", 5) ||
1388 !strncmp(con->uri, "/jobs", 5))
ef416fc2 1389 {
1390 /*
1391 * Send CGI output...
1392 */
1393
1394 if (!strncmp(con->uri, "/admin", 6))
1395 {
1396 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1397 ServerBin);
1398
b423cd4c 1399 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1400 }
1401 else if (!strncmp(con->uri, "/printers", 9))
1402 {
1403 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1404 ServerBin);
b423cd4c 1405
1406 if (con->uri[9] && con->uri[10])
1407 cupsdSetString(&con->options, con->uri + 9);
1408 else
1409 cupsdSetString(&con->options, NULL);
ef416fc2 1410 }
1411 else if (!strncmp(con->uri, "/classes", 8))
1412 {
1413 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1414 ServerBin);
b423cd4c 1415
1416 if (con->uri[8] && con->uri[9])
1417 cupsdSetString(&con->options, con->uri + 8);
1418 else
1419 cupsdSetString(&con->options, NULL);
ef416fc2 1420 }
1421 else if (!strncmp(con->uri, "/jobs", 5))
1422 {
1423 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1424 ServerBin);
b423cd4c 1425
1426 if (con->uri[5] && con->uri[6])
1427 cupsdSetString(&con->options, con->uri + 5);
1428 else
1429 cupsdSetString(&con->options, NULL);
ef416fc2 1430 }
1431 else
1432 {
1433 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1434 ServerBin);
ef416fc2 1435
b423cd4c 1436 if (con->uri[5] && con->uri[6])
1437 cupsdSetString(&con->options, con->uri + 5);
1438 else
1439 cupsdSetString(&con->options, NULL);
1440 }
ef416fc2 1441
1442 if (!cupsdSendCommand(con, con->command, con->options, 0))
1443 {
5bd77a73 1444 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1445 {
1446 cupsdCloseClient(con);
1447 return;
1448 }
ef416fc2 1449 }
1450 else
1451 cupsdLogRequest(con, HTTP_OK);
1452
1453 if (con->http.version <= HTTP_1_0)
1454 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1455 }
1456 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1457 (strchr(con->uri + 12, '/') ||
1458 strlen(con->uri) == 12)) ||
1459 (!strncmp(con->uri, "/admin/log/", 11) &&
1460 (strchr(con->uri + 11, '/') ||
1461 strlen(con->uri) == 11)))
1462 {
1463 /*
bf3816c7 1464 * GET can only be done to configuration files directly under
ef416fc2 1465 * /admin/conf...
1466 */
1467
bf3816c7
MS		 1468 cupsdLogMessage(CUPSD_LOG_ERROR,
1469 "Request for subdirectory \"%s\"!", con->uri);
1470
5bd77a73 1471 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1472 {
1473 cupsdCloseClient(con);
1474 return;
1475 }
ef416fc2 1476
1477 break;
1478 }
1479 else
1480 {
1481 /*
1482 * Serve a file...
1483 */
1484
1485 if ((filename = get_file(con, &filestats, buf,
1486 sizeof(buf))) == NULL)
1487 {
5bd77a73 1488 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1489 {
1490 cupsdCloseClient(con);
1491 return;
1492 }
ef416fc2 1493
1494 break;
1495 }
1496
4400e98d 1497 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1498
e1d6a774 1499 if (is_cgi(con, filename, &filestats, type))
ef416fc2 1500 {
1501 /*
1502 * Note: con->command and con->options were set by
e1d6a774 1503 * is_cgi()...
ef416fc2 1504 */
1505
1506 if (!cupsdSendCommand(con, con->command, con->options, 0))
1507 {
5bd77a73 1508 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1509 {
1510 cupsdCloseClient(con);
1511 return;
1512 }
ef416fc2 1513 }
1514 else
1515 cupsdLogRequest(con, HTTP_OK);
1516
1517 if (con->http.version <= HTTP_1_0)
1518 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1519 break;
1520 }
1521
1522 if (!check_if_modified(con, &filestats))
1523 {
5bd77a73 1524 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1525 {
1526 cupsdCloseClient(con);
1527 return;
1528 }
ef416fc2 1529 }
1530 else
1531 {
1532 if (type == NULL)
5a9febac 1533 strlcpy(line, "text/plain", sizeof(line));
ef416fc2 1534 else
1535 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1536
a74454a7 1537 if (!write_file(con, HTTP_OK, filename, line, &filestats))
f7deaa1a 1538 {
1539 cupsdCloseClient(con);
1540 return;
1541 }
ef416fc2 1542 }
1543 }
1544 break;
1545
cb7f98ee 1546 case HTTP_STATE_POST_RECV :
ef416fc2 1547 /*
1548 * See if the POST request includes a Content-Length field, and if
1549 * so check the length against any limits that are set...
1550 */
1551
ef416fc2 1552 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1553 MaxRequestSize > 0 &&
1554 con->http.data_remaining > MaxRequestSize)
1555 {
1556 /*
1557 * Request too large...
1558 */
1559
5bd77a73 1560 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1561 {
1562 cupsdCloseClient(con);
1563 return;
1564 }
ef416fc2 1565
1566 break;
1567 }
839a51c8
MS		 1568 else if (con->http.data_remaining < 0 ||
1569 (!con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
cb7f98ee 1570 con->http.data_encoding == HTTP_ENCODING_LENGTH))
ef416fc2 1571 {
1572 /*
1573 * Negative content lengths are invalid!
1574 */
1575
5bd77a73 1576 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1577 {
1578 cupsdCloseClient(con);
1579 return;
1580 }
ef416fc2 1581
1582 break;
1583 }
1584
1585 /*
1586 * See what kind of POST request this is; for IPP requests the
1587 * content-type field will be "application/ipp"...
1588 */
1589
1590 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1591 "application/ipp"))
1592 con->request = ippNew();
229681c1
MS		 1593 else if (!WebInterface)
1594 {
1595 /*
1596 * Web interface is disabled. Show an appropriate message...
1597 */
1598
1599 if (!cupsdSendError(con, HTTP_WEBIF_DISABLED, CUPSD_AUTH_NONE))
1600 {
1601 cupsdCloseClient(con);
1602 return;
1603 }
1604
1605 break;
1606 }
ef416fc2 1607 else if ((!strncmp(con->uri, "/admin", 6) &&
1608 strncmp(con->uri, "/admin/conf/", 12) &&
1609 strncmp(con->uri, "/admin/log/", 11)) ||
1610 !strncmp(con->uri, "/printers", 9) ||
1611 !strncmp(con->uri, "/classes", 8) ||
1612 !strncmp(con->uri, "/help", 5) ||
1613 !strncmp(con->uri, "/jobs", 5))
1614 {
1615 /*
1616 * CGI request...
1617 */
1618
1619 if (!strncmp(con->uri, "/admin", 6))
1620 {
1621 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1622 ServerBin);
1623
b423cd4c 1624 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1625 }
1626 else if (!strncmp(con->uri, "/printers", 9))
1627 {
1628 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1629 ServerBin);
b423cd4c 1630
1631 if (con->uri[9] && con->uri[10])
1632 cupsdSetString(&con->options, con->uri + 9);
1633 else
1634 cupsdSetString(&con->options, NULL);
ef416fc2 1635 }
1636 else if (!strncmp(con->uri, "/classes", 8))
1637 {
1638 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1639 ServerBin);
b423cd4c 1640
1641 if (con->uri[8] && con->uri[9])
1642 cupsdSetString(&con->options, con->uri + 8);
1643 else
1644 cupsdSetString(&con->options, NULL);
ef416fc2 1645 }
1646 else if (!strncmp(con->uri, "/jobs", 5))
1647 {
1648 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1649 ServerBin);
b423cd4c 1650
1651 if (con->uri[5] && con->uri[6])
1652 cupsdSetString(&con->options, con->uri + 5);
1653 else
1654 cupsdSetString(&con->options, NULL);
ef416fc2 1655 }
1656 else
1657 {
1658 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1659 ServerBin);
ef416fc2 1660
b423cd4c 1661 if (con->uri[5] && con->uri[6])
1662 cupsdSetString(&con->options, con->uri + 5);
1663 else
1664 cupsdSetString(&con->options, NULL);
1665 }
ef416fc2 1666
ef416fc2 1667 if (con->http.version <= HTTP_1_0)
1668 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1669 }
1670 else
1671 {
1672 /*
1673 * POST to a file...
1674 */
1675
1676 if ((filename = get_file(con, &filestats, buf,
1677 sizeof(buf))) == NULL)
1678 {
5bd77a73 1679 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1680 {
1681 cupsdCloseClient(con);
1682 return;
1683 }
ef416fc2 1684
1685 break;
1686 }
1687
4400e98d 1688 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1689
e1d6a774 1690 if (!is_cgi(con, filename, &filestats, type))
ef416fc2 1691 {
1692 /*
1693 * Only POST to CGI's...
1694 */
1695
5bd77a73 1696 if (!cupsdSendError(con, HTTP_UNAUTHORIZED, CUPSD_AUTH_NONE))
f7deaa1a 1697 {
1698 cupsdCloseClient(con);
1699 return;
1700 }
ef416fc2 1701 }
1702 }
1703 break;
1704
cb7f98ee 1705 case HTTP_STATE_PUT_RECV :
ef416fc2 1706 /*
1707 * Validate the resource name...
1708 */
1709
c41769ff 1710 if (strcmp(con->uri, "/admin/conf/cupsd.conf"))
ef416fc2 1711 {
1712 /*
c41769ff 1713 * PUT can only be done to the cupsd.conf file...
ef416fc2 1714 */
1715
bf3816c7 1716 cupsdLogMessage(CUPSD_LOG_ERROR,
c41769ff 1717 "[Client %d] Disallowed PUT request for \"%s\".",
85dda01c 1718 con->http.fd, con->uri);
bf3816c7 1719
5bd77a73 1720 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1721 {
1722 cupsdCloseClient(con);
1723 return;
1724 }
ef416fc2 1725
1726 break;
1727 }
1728
1729 /*
1730 * See if the PUT request includes a Content-Length field, and if
1731 * so check the length against any limits that are set...
1732 */
1733
ef416fc2 1734 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1735 MaxRequestSize > 0 &&
1736 con->http.data_remaining > MaxRequestSize)
1737 {
1738 /*
1739 * Request too large...
1740 */
1741
5bd77a73 1742 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1743 {
1744 cupsdCloseClient(con);
1745 return;
1746 }
ef416fc2 1747
1748 break;
1749 }
1750 else if (con->http.data_remaining < 0)
1751 {
1752 /*
1753 * Negative content lengths are invalid!
1754 */
1755
5bd77a73 1756 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1757 {
1758 cupsdCloseClient(con);
1759 return;
1760 }
ef416fc2 1761
1762 break;
1763 }
1764
1765 /*
1766 * Open a temporary file to hold the request...
1767 */
1768
1769 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1770 request_id ++);
1771 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1772
ef416fc2 1773 if (con->file < 0)
1774 {
a4924f6c 1775 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1776 "[Client %d] Unable to create request file "
1777 "\"%s\": %s", con->http.fd, con->filename,
1778 strerror(errno));
a4924f6c 1779
5bd77a73 1780 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1781 {
1782 cupsdCloseClient(con);
1783 return;
1784 }
ef416fc2 1785 }
1786
1787 fchmod(con->file, 0640);
1788 fchown(con->file, RunUser, Group);
1789 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1790 break;
1791
cb7f98ee
MS		 1792 case HTTP_STATE_DELETE :
1793 case HTTP_STATE_TRACE :
5bd77a73 1794 cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE);
f7deaa1a 1795 cupsdCloseClient(con);
1796 return;
ef416fc2 1797
cb7f98ee 1798 case HTTP_STATE_HEAD :
ef416fc2 1799 if (!strncmp(con->uri, "/printers/", 10) &&
1800 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1801 {
1802 /*
1803 * Send PPD file - get the real printer name since printer
1804 * names are not case sensitive but filenames can be...
1805 */
1806
1807 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1808
1809 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1810 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1811 else
1812 {
5bd77a73 1813 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1814 {
1815 cupsdCloseClient(con);
1816 return;
1817 }
ef416fc2 1818
1819 break;
1820 }
1821 }
229681c1
MS		 1822 else if (!strncmp(con->uri, "/printers/", 10) &&
1823 !strcmp(con->uri + strlen(con->uri) - 4, ".png"))
1824 {
1825 /*
1826 * Send PNG file - get the real printer name since printer
1827 * names are not case sensitive but filenames can be...
1828 */
1829
1830 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1831
1832 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1833 snprintf(con->uri, sizeof(con->uri), "/icons/%s.png", p->name);
1834 else
1835 {
1836 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
1837 {
1838 cupsdCloseClient(con);
1839 return;
1840 }
1841
1842 break;
1843 }
1844 }
1845 else if (!WebInterface)
1846 {
1847 if (!cupsdSendHeader(con, HTTP_OK, line, CUPSD_AUTH_NONE))
1848 {
1849 cupsdCloseClient(con);
1850 return;
1851 }
1852
1853 if (httpPrintf(HTTP(con), "\r\n") < 0)
1854 {
1855 cupsdCloseClient(con);
1856 return;
1857 }
1858
1859 if (cupsdFlushHeader(con) < 0)
1860 {
1861 cupsdCloseClient(con);
1862 return;
1863 }
1864
a469f8a5
MS		 1865 con->http.state = HTTP_STATE_WAITING;
1866 DEBUG_puts("cupsdReadClient: Set state to HTTP_STATE_WAITING "
1867 "after HEAD.");
229681c1
MS		 1868 break;
1869 }
ef416fc2 1870
1871 if ((!strncmp(con->uri, "/admin", 6) &&
1872 strncmp(con->uri, "/admin/conf/", 12) &&
1873 strncmp(con->uri, "/admin/log/", 11)) ||
1874 !strncmp(con->uri, "/printers", 9) ||
1875 !strncmp(con->uri, "/classes", 8) ||
1876 !strncmp(con->uri, "/help", 5) ||
1877 !strncmp(con->uri, "/jobs", 5))
1878 {
1879 /*
1880 * CGI output...
1881 */
1882
5bd77a73 1883 if (!cupsdSendHeader(con, HTTP_OK, "text/html", CUPSD_AUTH_NONE))
f7deaa1a 1884 {
1885 cupsdCloseClient(con);
1886 return;
1887 }
ef416fc2 1888
1889 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 1890 {
1891 cupsdCloseClient(con);
1892 return;
1893 }
ef416fc2 1894
07725fee 1895 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1896 {
1897 cupsdCloseClient(con);
1898 return;
1899 }
d09495fa 1900
ef416fc2 1901 cupsdLogRequest(con, HTTP_OK);
1902 }
1903 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1904 (strchr(con->uri + 12, '/') ||
1905 strlen(con->uri) == 12)) ||
1906 (!strncmp(con->uri, "/admin/log/", 11) &&
1907 (strchr(con->uri + 11, '/') ||
1908 strlen(con->uri) == 11)))
1909 {
1910 /*
1911 * HEAD can only be done to configuration files under
1912 * /admin/conf...
1913 */
1914
bf3816c7 1915 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1916 "[Client %d] Request for subdirectory \"%s\".",
1917 con->http.fd, con->uri);
bf3816c7 1918
5bd77a73 1919 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1920 {
1921 cupsdCloseClient(con);
1922 return;
1923 }
ef416fc2 1924
1925 break;
1926 }
1927 else if ((filename = get_file(con, &filestats, buf,
1928 sizeof(buf))) == NULL)
1929 {
f11a948a
MS		 1930 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html",
1931 CUPSD_AUTH_NONE))
f7deaa1a 1932 {
1933 cupsdCloseClient(con);
1934 return;
1935 }
ef416fc2 1936
1937 cupsdLogRequest(con, HTTP_NOT_FOUND);
1938 }
1939 else if (!check_if_modified(con, &filestats))
1940 {
5bd77a73 1941 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1942 {
1943 cupsdCloseClient(con);
1944 return;
1945 }
ef416fc2 1946
1947 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
1948 }
1949 else
1950 {
1951 /*
1952 * Serve a file...
1953 */
1954
4400e98d 1955 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1956 if (type == NULL)
5a9febac 1957 strlcpy(line, "text/plain", sizeof(line));
ef416fc2 1958 else
1959 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1960
5bd77a73 1961 if (!cupsdSendHeader(con, HTTP_OK, line, CUPSD_AUTH_NONE))
f7deaa1a 1962 {
1963 cupsdCloseClient(con);
1964 return;
1965 }
ef416fc2 1966
1967 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
1968 httpGetDateString(filestats.st_mtime)) < 0)
f7deaa1a 1969 {
1970 cupsdCloseClient(con);
1971 return;
1972 }
ef416fc2 1973
1974 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
1975 (unsigned long)filestats.st_size) < 0)
f7deaa1a 1976 {
1977 cupsdCloseClient(con);
1978 return;
1979 }
ef416fc2 1980
1981 cupsdLogRequest(con, HTTP_OK);
1982 }
1983
1984 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 1985 {
1986 cupsdCloseClient(con);
1987 return;
1988 }
ef416fc2 1989
07725fee 1990 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1991 {
1992 cupsdCloseClient(con);
1993 return;
1994 }
d09495fa 1995
a469f8a5
MS		 1996 con->http.state = HTTP_STATE_WAITING;
1997 DEBUG_puts("cupsdReadClient: Set state to HTTP_STATE_WAITING "
1998 "after HEAD.");
ef416fc2 1999 break;
2000
2001 default :
2002 break; /* Anti-compiler-warning-code */
2003 }
2004 }
2005 }
2006
2007 /*
2008 * Handle any incoming data...
2009 */
2010
2011 switch (con->http.state)
2012 {
cb7f98ee 2013 case HTTP_STATE_PUT_RECV :
f7deaa1a 2014 do
ef416fc2 2015 {
f7deaa1a 2016 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
2017 {
f11a948a
MS		 2018 if (con->http.error && con->http.error != EPIPE)
2019 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2020 "[Client %d] HTTP_STATE_PUT_RECV Closing for error "
f11a948a
MS		 2021 "%d (%s)", con->http.fd, con->http.error,
2022 strerror(con->http.error));
2023 else
2024 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2025 "[Client %d] HTTP_STATE_PUT_RECV Closing on EOF",
f11a948a
MS		 2026 con->http.fd);
2027
f7deaa1a 2028 cupsdCloseClient(con);
2029 return;
2030 }
2031 else if (bytes > 0)
2032 {
2033 con->bytes += bytes;
ef416fc2 2034
f7deaa1a 2035 if (write(con->file, line, bytes) < bytes)
2036 {
2037 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2038 "[Client %d] Unable to write %d bytes to "
2039 "\"%s\": %s", con->http.fd, bytes, con->filename,
2040 strerror(errno));
ef416fc2 2041
f7deaa1a 2042 close(con->file);
2043 con->file = -1;
2044 unlink(con->filename);
2045 cupsdClearString(&con->filename);
ef416fc2 2046
5bd77a73 2047 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2048 {
2049 cupsdCloseClient(con);
2050 return;
2051 }
2052 }
ef416fc2 2053 }
f7deaa1a 2054 }
cb7f98ee 2055 while (con->http.state == HTTP_STATE_PUT_RECV && data_ready(con));
ef416fc2 2056
cb7f98ee 2057 if (con->http.state == HTTP_STATE_STATUS)
ef416fc2 2058 {
2059 /*
2060 * End of file, see how big it is...
2061 */
2062
2063 fstat(con->file, &filestats);
2064
ef416fc2 2065 close(con->file);
2066 con->file = -1;
2067
2068 if (filestats.st_size > MaxRequestSize &&
2069 MaxRequestSize > 0)
2070 {
2071 /*
2072 * Request is too big; remove it and send an error...
2073 */
2074
ef416fc2 2075 unlink(con->filename);
2076 cupsdClearString(&con->filename);
2077
5bd77a73 2078 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2079 {
2080 cupsdCloseClient(con);
2081 return;
2082 }
ef416fc2 2083 }
2084
2085 /*
2086 * Install the configuration file...
2087 */
2088
c41769ff 2089 status = install_cupsd_conf(con);
ef416fc2 2090
2091 /*
2092 * Return the status to the client...
2093 */
2094
5bd77a73 2095 if (!cupsdSendError(con, status, CUPSD_AUTH_NONE))
f7deaa1a 2096 {
2097 cupsdCloseClient(con);
2098 return;
2099 }
ef416fc2 2100 }
2101 break;
2102
cb7f98ee 2103 case HTTP_STATE_POST_RECV :
f7deaa1a 2104 do
ef416fc2 2105 {
f11a948a 2106 if (con->request && con->file < 0)
ef416fc2 2107 {
f7deaa1a 2108 /*
2109 * Grab any request data from the connection...
2110 */
ef416fc2 2111
f7deaa1a 2112 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
ef416fc2 2113 {
f7deaa1a 2114 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2115 "[Client %d] IPP read error: %s", con->http.fd,
2116 cupsLastErrorString());
f7deaa1a 2117
5bd77a73 2118 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 2119 cupsdCloseClient(con);
2120 return;
ef416fc2 2121 }
f7deaa1a 2122 else if (ipp_state != IPP_DATA)
2123 {
cb7f98ee 2124 if (con->http.state == HTTP_STATE_POST_SEND)
f7deaa1a 2125 {
5bd77a73 2126 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 2127 cupsdCloseClient(con);
2128 return;
2129 }
ef416fc2 2130
f7deaa1a 2131 break;
2132 }
2133 else
f11a948a 2134 {
85dda01c 2135 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] %d.%d %s %d",
f11a948a
MS		 2136 con->http.fd, con->request->request.op.version[0],
2137 con->request->request.op.version[1],
2138 ippOpString(con->request->request.op.operation_id),
2139 con->request->request.op.request_id);
f7deaa1a 2140 con->bytes += ippLength(con->request);
f11a948a 2141 }
f7deaa1a 2142 }
ef416fc2 2143
cb7f98ee 2144 if (con->file < 0 && con->http.state != HTTP_STATE_POST_SEND)
f7deaa1a 2145 {
2146 /*
2147 * Create a file as needed for the request data...
2148 */
ef416fc2 2149
f11a948a
MS		 2150 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
2151 request_id ++);
f7deaa1a 2152 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
ef416fc2 2153
f7deaa1a 2154 if (con->file < 0)
2155 {
a4924f6c 2156 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2157 "[Client %d] Unable to create request file "
2158 "\"%s\": %s", con->http.fd, con->filename,
2159 strerror(errno));
a4924f6c 2160
5bd77a73 2161 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2162 {
2163 cupsdCloseClient(con);
2164 return;
2165 }
2166 }
ef416fc2 2167
f7deaa1a 2168 fchmod(con->file, 0640);
2169 fchown(con->file, RunUser, Group);
2170 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2171 }
ef416fc2 2172
cb7f98ee 2173 if (con->http.state != HTTP_STATE_POST_SEND)
ef416fc2 2174 {
cb7f98ee
MS		 2175 if (!httpWait(HTTP(con), 0))
2176 return;
2177 else if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
f7deaa1a 2178 {
f11a948a
MS		 2179 if (con->http.error && con->http.error != EPIPE)
2180 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2181 "[Client %d] HTTP_STATE_POST_SEND Closing for "
f11a948a
MS		 2182 "error %d (%s)", con->http.fd, con->http.error,
2183 strerror(con->http.error));
2184 else
2185 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2186 "[Client %d] HTTP_STATE_POST_SEND Closing on EOF",
f11a948a
MS		 2187 con->http.fd);
2188
f7deaa1a 2189 cupsdCloseClient(con);
2190 return;
2191 }
2192 else if (bytes > 0)
2193 {
2194 con->bytes += bytes;
ef416fc2 2195
f7deaa1a 2196 if (write(con->file, line, bytes) < bytes)
2197 {
2198 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2199 "[Client %d] Unable to write %d bytes to "
2200 "\"%s\": %s", con->http.fd, bytes,
2201 con->filename, strerror(errno));
ef416fc2 2202
f7deaa1a 2203 close(con->file);
2204 con->file = -1;
2205 unlink(con->filename);
2206 cupsdClearString(&con->filename);
ef416fc2 2207
f11a948a
MS		 2208 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE,
2209 CUPSD_AUTH_NONE))
f7deaa1a 2210 {
2211 cupsdCloseClient(con);
2212 return;
2213 }
2214 }
2215 }
cb7f98ee 2216 else if (con->http.state == HTTP_STATE_POST_RECV)
f7deaa1a 2217 return;
cb7f98ee 2218 else if (con->http.state != HTTP_STATE_POST_SEND)
f7deaa1a 2219 {
f11a948a 2220 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2221 "[Client %d] Closing on unexpected state %s.",
a469f8a5 2222 con->http.fd, http_states[con->http.state + 1]);
f7deaa1a 2223 cupsdCloseClient(con);
2224 return;
ef416fc2 2225 }
2226 }
f7deaa1a 2227 }
cb7f98ee 2228 while (con->http.state == HTTP_STATE_POST_RECV && data_ready(con));
ef416fc2 2229
cb7f98ee 2230 if (con->http.state == HTTP_STATE_POST_SEND)
ef416fc2 2231 {
2232 if (con->file >= 0)
2233 {
2234 fstat(con->file, &filestats);
2235
ef416fc2 2236 close(con->file);
2237 con->file = -1;
2238
2239 if (filestats.st_size > MaxRequestSize &&
2240 MaxRequestSize > 0)
2241 {
2242 /*
2243 * Request is too big; remove it and send an error...
2244 */
2245
ef416fc2 2246 unlink(con->filename);
2247 cupsdClearString(&con->filename);
2248
2249 if (con->request)
2250 {
2251 /*
2252 * Delete any IPP request data...
2253 */
2254
2255 ippDelete(con->request);
2256 con->request = NULL;
2257 }
2258
5bd77a73 2259 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2260 {
2261 cupsdCloseClient(con);
2262 return;
2263 }
ef416fc2 2264 }
f8b3a85b
MS		 2265 else if (filestats.st_size == 0)
2266 {
2267 /*
2268 * Don't allow empty file...
2269 */
2270
2271 unlink(con->filename);
2272 cupsdClearString(&con->filename);
2273 }
ef416fc2 2274
2275 if (con->command)
2276 {
2277 if (!cupsdSendCommand(con, con->command, con->options, 0))
2278 {
5bd77a73 2279 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 2280 {
2281 cupsdCloseClient(con);
2282 return;
2283 }
ef416fc2 2284 }
2285 else
2286 cupsdLogRequest(con, HTTP_OK);
2287 }
2288 }
2289
2290 if (con->request)
f7deaa1a 2291 {
2292 cupsdProcessIPPRequest(con);
bc44d920 2293
2294 if (con->filename)
2295 {
bc44d920 2296 unlink(con->filename);
2297 cupsdClearString(&con->filename);
2298 }
2299
f7deaa1a 2300 return;
2301 }
ef416fc2 2302 }
2303 break;
2304
2305 default :
2306 break; /* Anti-compiler-warning-code */
2307 }
2308
cb7f98ee 2309 if (con->http.state == HTTP_STATE_WAITING)
3dfe78b3
MS		 2310 {
2311 if (!con->http.keep_alive)
f11a948a
MS		 2312 {
2313 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2314 "[Client %d] Closing because Keep-Alive disabled",
f11a948a 2315 con->http.fd);
3dfe78b3 2316 cupsdCloseClient(con);
f11a948a 2317 }
3dfe78b3
MS		 2318 else
2319 {
2320 cupsArrayRemove(ActiveClients, con);
2321 cupsdSetBusyState();
2322 }
2323 }
ef416fc2 2324}
2325
2326
2327/*
2328 * 'cupsdSendCommand()' - Send output from a command via HTTP.
2329 */
2330
2331int /* O - 1 on success, 0 on failure */
2332cupsdSendCommand(
2333 cupsd_client_t *con, /* I - Client connection */
2334 char *command, /* I - Command to run */
2335 char *options, /* I - Command-line options */
2336 int root) /* I - Run as root? */
2337{
2338 int fd; /* Standard input file descriptor */
2339
2340
2341 if (con->filename)
ed486911 2342 {
ef416fc2 2343 fd = open(con->filename, O_RDONLY);
ef416fc2 2344
ed486911 2345 if (fd < 0)
2346 {
2347 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c 2348 "[Client %d] Unable to open \"%s\" for reading: %s",
ed486911 2349 con->http.fd, con->filename ? con->filename : "/dev/null",
2350 strerror(errno));
2351 return (0);
2352 }
ef416fc2 2353
ed486911 2354 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
2355 }
2356 else
2357 fd = -1;
ef416fc2 2358
2359 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
2360
ed486911 2361 if (fd >= 0)
2362 close(fd);
ef416fc2 2363
85dda01c
MS		 2364 cupsdLogMessage(CUPSD_LOG_INFO, "[Client %d] Started \"%s\" (pid=%d)",
2365 con->http.fd, command, con->pipe_pid);
ef416fc2 2366
85dda01c
MS		 2367 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] file=%d", con->http.fd,
2368 con->file);
ef416fc2 2369
2370 if (con->pipe_pid == 0)
2371 return (0);
2372
2373 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2374
f899b121 2375 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
ef416fc2 2376
2377 con->sent_header = 0;
2378 con->file_ready = 0;
2379 con->got_fields = 0;
68b10830 2380 con->header_used = 0;
ef416fc2 2381
2382 return (1);
2383}
2384
2385
2386/*
2387 * 'cupsdSendError()' - Send an error message via HTTP.
2388 */
2389
2390int /* O - 1 if successful, 0 otherwise */
2391cupsdSendError(cupsd_client_t *con, /* I - Connection */
f899b121 2392 http_status_t code, /* I - Error code */
2393 int auth_type)/* I - Authentication type */
ef416fc2 2394{
b9faaae1 2395 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c 2396 "[Client %d] cupsdSendError code=%d, auth_type=%d",
b9faaae1
MS		 2397 con->http.fd, code, auth_type);
2398
4744bd90 2399#ifdef HAVE_SSL
2400 /*
2401 * Force client to upgrade for authentication if that is how the
2402 * server is configured...
2403 */
2404
2405 if (code == HTTP_UNAUTHORIZED &&
2406 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
88f9aafc 2407 _cups_strcasecmp(con->http.hostname, "localhost") &&
4744bd90 2408 !con->http.tls)
2409 {
4744bd90 2410 code = HTTP_UPGRADE_REQUIRED;
2411 }
2412#endif /* HAVE_SSL */
2413
ef416fc2 2414 /*
2415 * Put the request in the access_log file...
2416 */
2417
2418 cupsdLogRequest(con, code);
2419
ef416fc2 2420 /*
2421 * To work around bugs in some proxies, don't use Keep-Alive for some
2422 * error messages...
f7deaa1a 2423 *
2424 * Kerberos authentication doesn't work without Keep-Alive, so
2425 * never disable it in that case.
ef416fc2 2426 */
2427
5bd77a73 2428 if (code >= HTTP_BAD_REQUEST && con->http.auth_type != CUPSD_AUTH_NEGOTIATE)
ef416fc2 2429 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
2430
2431 /*
2432 * Send an error message back to the client. If the error code is a
2433 * 400 or 500 series, make sure the message contains some text, too!
2434 */
2435
f899b121 2436 if (!cupsdSendHeader(con, code, NULL, auth_type))
ef416fc2 2437 return (0);
2438
2439#ifdef HAVE_SSL
2440 if (code == HTTP_UPGRADE_REQUIRED)
2441 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
2442 return (0);
2443
a469f8a5 2444 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n") < 0)
ef416fc2 2445 return (0);
2446#endif /* HAVE_SSL */
2447
f7deaa1a 2448 if (con->http.version >= HTTP_1_1 &&
2449 con->http.keep_alive == HTTP_KEEPALIVE_OFF)
ef416fc2 2450 {
2451 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
2452 return (0);
2453 }
2454
2455 if (code >= HTTP_BAD_REQUEST)
2456 {
2457 /*
2458 * Send a human-readable error message.
2459 */
2460
80ca4592 2461 char message[4096], /* Message for user */
2462 urltext[1024], /* URL redirection text */
2463 redirect[1024]; /* Redirection link */
ef416fc2 2464 const char *text; /* Status-specific text */
2465
80ca4592 2466
2467 redirect[0] = '\0';
2468
ef416fc2 2469 if (code == HTTP_UNAUTHORIZED)
2470 text = _cupsLangString(con->language,
2471 _("Enter your username and password or the "
2472 "root username and password to access this "
f7deaa1a 2473 "page. If you are using Kerberos authentication, "
2474 "make sure you have a valid Kerberos ticket."));
ef416fc2 2475 else if (code == HTTP_UPGRADE_REQUIRED)
80ca4592 2476 {
2477 text = urltext;
2478
2479 snprintf(urltext, sizeof(urltext),
2480 _cupsLangString(con->language,
2481 _("You must access this page using the URL "
2482 "<A HREF=\"https://%s:%d%s\">"
2483 "https://%s:%d%s</A>.")),
2484 con->servername, con->serverport, con->uri,
2485 con->servername, con->serverport, con->uri);
2486
2487 snprintf(redirect, sizeof(redirect),
b86bc4cf 2488 "<META HTTP-EQUIV=\"Refresh\" "
2489 "CONTENT=\"3;URL=https://%s:%d%s\">\n",
80ca4592 2490 con->servername, con->serverport, con->uri);
2491 }
229681c1
MS		 2492 else if (code == HTTP_WEBIF_DISABLED)
2493 text = _cupsLangString(con->language,
2494 _("The web interface is currently disabled. Run "
2495 "\"cupsctl WebInterface=yes\" to enable it."));
ef416fc2 2496 else
2497 text = "";
2498
2499 snprintf(message, sizeof(message),
745129be
MS		 2500 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" "
2501 "\"http://www.w3.org/TR/html4/loose.dtd\">\n"
ef416fc2 2502 "<HTML>\n"
2503 "<HEAD>\n"
2504 "\t<META HTTP-EQUIV=\"Content-Type\" "
2505 "CONTENT=\"text/html; charset=utf-8\">\n"
229681c1 2506 "\t<TITLE>%s - " CUPS_SVERSION "</TITLE>\n"
ef416fc2 2507 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2508 "HREF=\"/cups.css\">\n"
80ca4592 2509 "%s"
ef416fc2 2510 "</HEAD>\n"
2511 "<BODY>\n"
229681c1 2512 "<H1>%s</H1>\n"
ef416fc2 2513 "<P>%s</P>\n"
2514 "</BODY>\n"
2515 "</HTML>\n",
229681c1 2516 httpStatus(code), redirect, httpStatus(code), text);
ef416fc2 2517
2518 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2519 return (0);
2520 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2521 (int)strlen(message)) < 0)
2522 return (0);
2523 if (httpPrintf(HTTP(con), "\r\n") < 0)
2524 return (0);
2525 if (httpPrintf(HTTP(con), "%s", message) < 0)
2526 return (0);
2527 }
2528 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2529 return (0);
2530
07725fee 2531 if (cupsdFlushHeader(con) < 0)
2532 return (0);
d09495fa 2533
a469f8a5
MS		 2534 con->http.state = HTTP_STATE_WAITING;
2535
2536 DEBUG_puts("cupsdSendError: Set state to HTTP_STATE_WAITING.");
ef416fc2 2537
2538 return (1);
2539}
2540
2541
ef416fc2 2542/*
2543 * 'cupsdSendHeader()' - Send an HTTP request.
2544 */
2545
2546int /* O - 1 on success, 0 on failure */
f899b121 2547cupsdSendHeader(
2548 cupsd_client_t *con, /* I - Client to send to */
2549 http_status_t code, /* I - HTTP status code */
2550 char *type, /* I - MIME type of document */
2551 int auth_type) /* I - Type of authentication */
ef416fc2 2552{
5a738aea 2553 char auth_str[1024]; /* Authorization string */
f7deaa1a 2554
2555
4744bd90 2556 /*
2557 * Send the HTTP status header...
2558 */
2559
b423cd4c 2560 if (code == HTTP_CONTINUE)
2561 {
4744bd90 2562 /*
2563 * 100-continue doesn't send any headers...
2564 */
2565
07725fee 2566 return (httpPrintf(HTTP(con), "HTTP/%d.%d 100 Continue\r\n\r\n",
2567 con->http.version / 100, con->http.version % 100) > 0);
b423cd4c 2568 }
229681c1
MS		 2569 else if (code == HTTP_WEBIF_DISABLED)
2570 {
2571 /*
2572 * Treat our special "web interface is disabled" status as "200 OK" for web
2573 * browsers.
2574 */
2575
2576 code = HTTP_OK;
2577 }
b423cd4c 2578
07725fee 2579 httpFlushWrite(HTTP(con));
2580
cb7f98ee 2581 con->http.data_encoding = HTTP_ENCODING_FIELDS;
07725fee 2582
2583 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2584 con->http.version % 100, code, httpStatus(code)) < 0)
2585 return (0);
ef416fc2 2586 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2587 return (0);
2588 if (ServerHeader)
2589 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2590 return (0);
2591 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2592 {
2593 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2594 return (0);
2595 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2596 KeepAliveTimeout) < 0)
2597 return (0);
2598 }
2599 if (code == HTTP_METHOD_NOT_ALLOWED)
e6013cfa 2600 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n") < 0)
ef416fc2 2601 return (0);
2602
2603 if (code == HTTP_UNAUTHORIZED)
2604 {
5bd77a73 2605 if (auth_type == CUPSD_AUTH_NONE)
f899b121 2606 {
5bd77a73 2607 if (!con->best || con->best->type <= CUPSD_AUTH_NONE)
dcb445bc 2608 auth_type = cupsdDefaultAuthType();
f899b121 2609 else
2610 auth_type = con->best->type;
2611 }
f7deaa1a 2612
2613 auth_str[0] = '\0';
2614
5bd77a73 2615 if (auth_type == CUPSD_AUTH_BASIC || auth_type == CUPSD_AUTH_BASICDIGEST)
f7deaa1a 2616 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
5bd77a73 2617 else if (auth_type == CUPSD_AUTH_DIGEST)
f7deaa1a 2618 snprintf(auth_str, sizeof(auth_str), "Digest realm=\"CUPS\", nonce=\"%s\"",
2619 con->http.hostname);
2620#ifdef HAVE_GSSAPI
eac3a0a0 2621 else if (auth_type == CUPSD_AUTH_NEGOTIATE)
f7deaa1a 2622 strlcpy(auth_str, "Negotiate", sizeof(auth_str));
2623#endif /* HAVE_GSSAPI */
2624
e07d4801 2625 if (con->best && auth_type != CUPSD_AUTH_NEGOTIATE &&
88f9aafc 2626 !_cups_strcasecmp(con->http.hostname, "localhost"))
ef416fc2 2627 {
e07d4801
MS		 2628 /*
2629 * Add a "trc" (try root certification) parameter for local non-Kerberos
2630 * requests when the request requires system group membership - then the
2631 * client knows the root certificate can/should be used.
2632 *
f3c17241 2633 * Also, for OS X we also look for @AUTHKEY and add an "authkey"
e07d4801
MS		 2634 * parameter as needed...
2635 */
2636
10d09e33
MS		 2637 char *name, /* Current user name */
2638 *auth_key; /* Auth key buffer */
f7deaa1a 2639 size_t auth_size; /* Size of remaining buffer */
2640
f7deaa1a 2641 auth_key = auth_str + strlen(auth_str);
2642 auth_size = sizeof(auth_str) - (auth_key - auth_str);
2643
10d09e33
MS		 2644 for (name = (char *)cupsArrayFirst(con->best->names);
2645 name;
2646 name = (char *)cupsArrayNext(con->best->names))
f7deaa1a 2647 {
e07d4801 2648#ifdef HAVE_AUTHORIZATION_H
88f9aafc 2649 if (!_cups_strncasecmp(name, "@AUTHKEY(", 9))
f7deaa1a 2650 {
10d09e33 2651 snprintf(auth_key, auth_size, ", authkey=\"%s\"", name + 9);
f7deaa1a 2652 /* end parenthesis is stripped in conf.c */
2653 break;
2654 }
e07d4801
MS		 2655 else
2656#endif /* HAVE_AUTHORIZATION_H */
88f9aafc 2657 if (!_cups_strcasecmp(name, "@SYSTEM"))
f7deaa1a 2658 {
e07d4801
MS		 2659#ifdef HAVE_AUTHORIZATION_H
2660 if (SystemGroupAuthKey)
2661 snprintf(auth_key, auth_size,
07ed0e9a 2662 ", authkey=\"%s\"",
e07d4801
MS		 2663 SystemGroupAuthKey);
2664 else
2665#else
f11a948a 2666 strlcpy(auth_key, ", trc=\"y\"", auth_size);
e07d4801 2667#endif /* HAVE_AUTHORIZATION_H */
f7deaa1a 2668 break;
2669 }
2670 }
ef416fc2 2671 }
f7deaa1a 2672
bc44d920 2673 if (auth_str[0])
2674 {
68b10830 2675 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2676 "[Client %d] WWW-Authenticate: %s", con->http.fd,
bc44d920 2677 auth_str);
2678
2679 if (httpPrintf(HTTP(con), "WWW-Authenticate: %s\r\n", auth_str) < 0)
2680 return (0);
2681 }
ef416fc2 2682 }
2683
e1d6a774 2684 if (con->language && strcmp(con->language->language, "C"))
ef416fc2 2685 {
2686 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2687 con->language->language) < 0)
2688 return (0);
2689 }
2690
e1d6a774 2691 if (type)
ef416fc2 2692 {
2693 if (!strcmp(type, "text/html"))
2694 {
2695 if (httpPrintf(HTTP(con),
2696 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2697 return (0);
2698 }
2699 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2700 return (0);
2701 }
2702
2703 return (1);
2704}
2705
2706
2707/*
2708 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2709 */
2710
2711void
2712cupsdUpdateCGI(void)
2713{
2714 char *ptr, /* Pointer to end of line in buffer */
2715 message[1024]; /* Pointer to message text */
2716 int loglevel; /* Log level for message */
2717
2718
2719 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2720 message, sizeof(message))) != NULL)
f0ab5bff
MS		 2721 {
2722 if (loglevel == CUPSD_LOG_INFO)
2723 cupsdLogMessage(CUPSD_LOG_INFO, "%s", message);
2724
ef416fc2 2725 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2726 break;
f0ab5bff 2727 }
ef416fc2 2728
d09495fa 2729 if (ptr == NULL && !CGIStatusBuffer->bufused)
ef416fc2 2730 {
2731 /*
2732 * Fatal error on pipe - should never happen!
2733 */
2734
2735 cupsdLogMessage(CUPSD_LOG_CRIT,
2736 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2737 strerror(errno));
2738 }
2739}
2740
2741
2742/*
2743 * 'cupsdWriteClient()' - Write data to a client as needed.
2744 */
2745
f7deaa1a 2746void
ef416fc2 2747cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2748{
68b10830
MS		 2749 int bytes, /* Number of bytes written */
2750 field_col; /* Current column */
2751 char *bufptr, /* Pointer into buffer */
2752 *bufend; /* Pointer to end of buffer */
ef416fc2 2753 ipp_state_t ipp_state; /* IPP state value */
2754
2755
ef416fc2 2756 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 2757 "[Client %d] cupsdWriteClient "
2758 "error=%d, "
2759 "used=%d, "
2760 "state=%s, "
cb7f98ee 2761 "data_encoding=HTTP_ENCODING_%s, "
85dda01c
MS		 2762 "data_remaining=" CUPS_LLFMT ", "
2763 "response=%p(%s), "
2764 "pipe_pid=%d, "
2765 "file=%d",
2766 con->http.fd, con->http.error, con->http.used,
a469f8a5 2767 http_states[con->http.state + 1],
cb7f98ee 2768 con->http.data_encoding == HTTP_ENCODING_CHUNKED ?
85dda01c
MS		 2769 "CHUNKED" : "LENGTH",
2770 CUPS_LLCAST con->http.data_remaining,
2771 con->response,
2772 con->response ? ipp_states[con->response->state] : "",
2773 con->pipe_pid, con->file);
ef416fc2 2774
cb7f98ee
MS		 2775 if (con->http.state != HTTP_STATE_GET_SEND &&
2776 con->http.state != HTTP_STATE_POST_SEND)
8b116e60
MS		 2777 {
2778 /*
2779 * If we get called in the wrong state, then something went wrong with the
2780 * connection and we need to shut it down...
2781 */
2782
f11a948a 2783 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2784 "[Client %d] Closing on unexpected HTTP state %s.",
a469f8a5 2785 con->http.fd, http_states[con->http.state + 1]);
8b116e60 2786 cupsdCloseClient(con);
f7deaa1a 2787 return;
8b116e60 2788 }
f7deaa1a 2789
2790 if (con->pipe_pid)
2791 {
2792 /*
2793 * Make sure we select on the CGI output...
2794 */
2795
f899b121 2796 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
f7deaa1a 2797
2798 if (!con->file_ready)
2799 {
2800 /*
2801 * Try again later when there is CGI output available...
2802 */
2803
2804 cupsdRemoveSelect(con->http.fd);
2805 return;
2806 }
2807
2808 con->file_ready = 0;
2809 }
ef416fc2 2810
b94498cf 2811 if (con->response && con->response->state != IPP_DATA)
ef416fc2 2812 {
07725fee 2813 ipp_state = ippWrite(HTTP(con), con->response);
b94498cf 2814 bytes = ipp_state != IPP_ERROR &&
2815 (con->file >= 0 || ipp_state != IPP_DATA);
ef416fc2 2816 }
a2326b5b 2817 else if ((bytes = read(con->file, con->header + con->header_used,
68b10830 2818 sizeof(con->header) - con->header_used)) > 0)
ef416fc2 2819 {
68b10830
MS		 2820 con->header_used += bytes;
2821
ef416fc2 2822 if (con->pipe_pid && !con->got_fields)
2823 {
2824 /*
2825 * Inspect the data for Content-Type and other fields.
2826 */
2827
68b10830
MS		 2828 for (bufptr = con->header, bufend = con->header + con->header_used,
2829 field_col = 0;
2830 !con->got_fields && bufptr < bufend;
2831 bufptr ++)
d1c13e16 2832 {
ef416fc2 2833 if (*bufptr == '\n')
2834 {
2835 /*
2836 * Send line to client...
2837 */
2838
68b10830 2839 if (bufptr > con->header && bufptr[-1] == '\r')
ef416fc2 2840 bufptr[-1] = '\0';
2841 *bufptr++ = '\0';
2842
68b10830 2843 cupsdLogMessage(CUPSD_LOG_DEBUG, "Script header: %s", con->header);
ef416fc2 2844
2845 if (!con->sent_header)
2846 {
2847 /*
2848 * Handle redirection and CGI status codes...
2849 */
2850
88f9aafc 2851 if (!_cups_strncasecmp(con->header, "Location:", 9))
d6ae789d 2852 {
321d8d57
MS		 2853 if (!cupsdSendHeader(con, HTTP_SEE_OTHER, NULL, CUPSD_AUTH_NONE))
2854 {
2855 cupsdCloseClient(con);
2856 return;
2857 }
2858
07725fee 2859 con->sent_header = 2;
2860
d6ae789d 2861 if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
f7deaa1a 2862 return;
d6ae789d 2863 }
88f9aafc 2864 else if (!_cups_strncasecmp(con->header, "Status:", 7))
07725fee 2865 {
68b10830
MS		 2866 cupsdSendError(con, (http_status_t)atoi(con->header + 7),
2867 CUPSD_AUTH_NONE);
07725fee 2868 con->sent_header = 2;
2869 }
ef416fc2 2870 else
4744bd90 2871 {
321d8d57
MS		 2872 if (!cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE))
2873 {
2874 cupsdCloseClient(con);
2875 return;
2876 }
2877
07725fee 2878 con->sent_header = 1;
ef416fc2 2879
4744bd90 2880 if (con->http.version == HTTP_1_1)
2881 {
4744bd90 2882 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
f7deaa1a 2883 return;
4744bd90 2884 }
2885 }
ef416fc2 2886 }
2887
88f9aafc 2888 if (_cups_strncasecmp(con->header, "Status:", 7))
68b10830 2889 httpPrintf(HTTP(con), "%s\r\n", con->header);
ef416fc2 2890
ef416fc2 2891 /*
2892 * Update buffer...
2893 */
2894
68b10830 2895 con->header_used -= bufptr - con->header;
d1c13e16 2896
68b10830
MS		 2897 if (con->header_used > 0)
2898 memmove(con->header, bufptr, con->header_used);
d1c13e16 2899
68b10830 2900 bufptr = con->header - 1;
ef416fc2 2901
2902 /*
2903 * See if the line was empty...
2904 */
2905
68b10830 2906 if (field_col == 0)
d09495fa 2907 {
ef416fc2 2908 con->got_fields = 1;
d09495fa 2909
07725fee 2910 if (cupsdFlushHeader(con) < 0)
2911 {
2912 cupsdCloseClient(con);
f7deaa1a 2913 return;
07725fee 2914 }
d09495fa 2915
2916 if (con->http.version == HTTP_1_1)
cb7f98ee 2917 con->http.data_encoding = HTTP_ENCODING_CHUNKED;
d09495fa 2918 }
ef416fc2 2919 else
68b10830 2920 field_col = 0;
ef416fc2 2921 }
2922 else if (*bufptr != '\r')
68b10830 2923 field_col ++;
d1c13e16 2924 }
ef416fc2 2925
68b10830 2926 if (!con->got_fields)
47879b8b 2927 {
ef416fc2 2928 con->http.activity = time(NULL);
47879b8b
MS		 2929 return;
2930 }
ef416fc2 2931 }
2932
68b10830 2933 if (con->header_used > 0)
ef416fc2 2934 {
68b10830 2935 if (httpWrite2(HTTP(con), con->header, con->header_used) < 0)
4744bd90 2936 {
f11a948a 2937 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2938 "[Client %d] Closing for error %d (%s)",
f11a948a
MS		 2939 con->http.fd, con->http.error,
2940 strerror(con->http.error));
4744bd90 2941 cupsdCloseClient(con);
f7deaa1a 2942 return;
4744bd90 2943 }
ef416fc2 2944
cb7f98ee 2945 if (con->http.data_encoding == HTTP_ENCODING_CHUNKED)
01ce6322 2946 httpFlushWrite(HTTP(con));
ae71f5de 2947
68b10830 2948 con->bytes += con->header_used;
ef416fc2 2949
cb7f98ee 2950 if (con->http.state == HTTP_STATE_WAITING)
4744bd90 2951 bytes = 0;
68b10830
MS		 2952 else
2953 bytes = con->header_used;
2954
2955 con->header_used = 0;
4744bd90 2956 }
ef416fc2 2957 }
2958
8b116e60 2959 if (bytes <= 0 ||
cb7f98ee 2960 (con->http.state != HTTP_STATE_GET_SEND && con->http.state != HTTP_STATE_POST_SEND))
ef416fc2 2961 {
38e73f87 2962 if (!con->sent_header && con->pipe_pid)
94da7e34
MS		 2963 cupsdSendError(con, HTTP_SERVER_ERROR, CUPSD_AUTH_NONE);
2964 else
2965 {
2966 cupsdLogRequest(con, HTTP_OK);
ef416fc2 2967
94da7e34 2968 httpFlushWrite(HTTP(con));
ef416fc2 2969
cb7f98ee 2970 if (con->http.data_encoding == HTTP_ENCODING_CHUNKED && con->sent_header == 1)
ef416fc2 2971 {
94da7e34
MS		 2972 if (httpWrite2(HTTP(con), "", 0) < 0)
2973 {
f11a948a 2974 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2975 "[Client %d] Closing for error %d (%s)",
f11a948a
MS		 2976 con->http.fd, con->http.error,
2977 strerror(con->http.error));
94da7e34
MS		 2978 cupsdCloseClient(con);
2979 return;
2980 }
ef416fc2 2981 }
2982 }
2983
cb7f98ee 2984 con->http.state = HTTP_STATE_WAITING;
ef416fc2 2985
f7deaa1a 2986 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 2987
2988 if (con->file >= 0)
2989 {
f7deaa1a 2990 cupsdRemoveSelect(con->file);
ef416fc2 2991
2992 if (con->pipe_pid)
2993 cupsdEndProcess(con->pipe_pid, 0);
2994
ef416fc2 2995 close(con->file);
2996 con->file = -1;
2997 con->pipe_pid = 0;
2998 }
2999
3000 if (con->filename)
3001 {
ef416fc2 3002 unlink(con->filename);
3003 cupsdClearString(&con->filename);
3004 }
3005
2abf387c 3006 if (con->request)
ef416fc2 3007 {
3008 ippDelete(con->request);
3009 con->request = NULL;
3010 }
3011
2abf387c 3012 if (con->response)
ef416fc2 3013 {
3014 ippDelete(con->response);
3015 con->response = NULL;
3016 }
3017
3018 cupsdClearString(&con->command);
3019 cupsdClearString(&con->options);
b86bc4cf 3020 cupsdClearString(&con->query_string);
ef416fc2 3021
3022 if (!con->http.keep_alive)
3023 {
f11a948a 3024 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 3025 "[Client %d] Closing because Keep-Alive disabled.",
f11a948a 3026 con->http.fd);
ef416fc2 3027 cupsdCloseClient(con);
f7deaa1a 3028 return;
ef416fc2 3029 }
f11a948a
MS		 3030 else
3031 {
3032 cupsArrayRemove(ActiveClients, con);
3033 cupsdSetBusyState();
3034 }
ef416fc2 3035 }
3036
3037 con->http.activity = time(NULL);
f7deaa1a 3038}
ef416fc2 3039
f7deaa1a 3040
e1d6a774 3041/*
3042 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
3043 */
3044
3045static int /* O - 1 if modified since */
3046check_if_modified(
3047 cupsd_client_t *con, /* I - Client connection */
3048 struct stat *filestats) /* I - File information */
3049{
3050 char *ptr; /* Pointer into field */
3051 time_t date; /* Time/date value */
3052 off_t size; /* Size/length value */
3053
3054
3055 size = 0;
3056 date = 0;
3057 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
3058
3059 if (*ptr == '\0')
3060 return (1);
3061
3062 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c 3063 "[Client %d] check_if_modified "
b9faaae1 3064 "filestats=%p(" CUPS_LLFMT ", %d)) If-Modified-Since=\"%s\"",
85dda01c 3065 con->http.fd, filestats, CUPS_LLCAST filestats->st_size,
b9faaae1 3066 (int)filestats->st_mtime, ptr);
e1d6a774 3067
3068 while (*ptr != '\0')
3069 {
3070 while (isspace(*ptr) || *ptr == ';')
3071 ptr ++;
3072
88f9aafc 3073 if (_cups_strncasecmp(ptr, "length=", 7) == 0)
e1d6a774 3074 {
3075 ptr += 7;
3076 size = strtoll(ptr, NULL, 10);
3077
3078 while (isdigit(*ptr))
3079 ptr ++;
3080 }
3081 else if (isalpha(*ptr))
3082 {
3083 date = httpGetDateTime(ptr);
3084 while (*ptr != '\0' && *ptr != ';')
3085 ptr ++;
3086 }
e53920b9 3087 else
3088 ptr ++;
e1d6a774 3089 }
3090
e1d6a774 3091 return ((size != filestats->st_size && size != 0) ||
3092 (date < filestats->st_mtime && date != 0) ||
3093 (size == 0 && date == 0));
3094}
3095
3096
3dfe78b3
MS		 3097/*
3098 * 'compare_clients()' - Compare two client connections.
3099 */
3100
3101static int /* O - Result of comparison */
3102compare_clients(cupsd_client_t *a, /* I - First client */
3103 cupsd_client_t *b, /* I - Second client */
3104 void *data) /* I - User data (not used) */
3105{
3106 (void)data;
3107
3108 if (a == b)
3109 return (0);
3110 else if (a < b)
3111 return (-1);
3112 else
3113 return (1);
3114}
3115
3116
85dda01c
MS		 3117/*
3118 * 'data_ready()' - Check whether data is available from a client.
3119 */
ef416fc2 3120
85dda01c
MS		 3121static int /* O - 1 if data is ready, 0 otherwise */
3122data_ready(cupsd_client_t *con) /* I - Client */
3123{
3124 if (con->http.used > 0)
3125 return (1);
3126#ifdef HAVE_SSL
3127 else if (con->http.tls)
e1d6a774 3128 {
85dda01c
MS		 3129# ifdef HAVE_LIBSSL
3130 if (SSL_pending((SSL *)(con->http.tls)))
3131 return (1);
3132# elif defined(HAVE_GNUTLS)
3133 if (gnutls_record_check_pending(con->http.tls))
3134 return (1);
3135# elif defined(HAVE_CDSASSL)
3136 size_t bytes; /* Bytes that are available */
ef416fc2 3137
85dda01c
MS		 3138 if (!SSLGetBufferedReadSize(con->http.tls, &bytes) && bytes > 0)
3139 return (1);
3140# endif /* HAVE_LIBSSL */
e1d6a774 3141 }
85dda01c 3142#endif /* HAVE_SSL */
ef416fc2 3143
85dda01c
MS		 3144 return (0);
3145}
ef416fc2 3146
ef416fc2 3147
ef416fc2 3148/*
3149 * 'get_file()' - Get a filename and state info.
3150 */
3151
3152static char * /* O - Real filename */
3153get_file(cupsd_client_t *con, /* I - Client connection */
3154 struct stat *filestats, /* O - File information */
3155 char *filename, /* IO - Filename buffer */
3156 int len) /* I - Buffer length */
3157{
3158 int status; /* Status of filesystem calls */
3159 char *ptr; /* Pointer info filename */
3160 int plen; /* Remaining length after pointer */
db1f069b 3161 char language[7]; /* Language subdirectory, if any */
ef416fc2 3162
3163
3164 /*
f7deaa1a 3165 * Figure out the real filename...
ef416fc2 3166 */
3167
db1f069b
MS		 3168 language[0] = '\0';
3169
7cf5915e 3170 if (!strncmp(con->uri, "/ppd/", 5) && !strchr(con->uri + 5, '/'))
ef416fc2 3171 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
7cf5915e
MS		 3172 else if (!strncmp(con->uri, "/icons/", 7) && !strchr(con->uri + 7, '/'))
3173 {
3174 snprintf(filename, len, "%s/%s", CacheDir, con->uri + 7);
3175 if (access(filename, F_OK) < 0)
3176 snprintf(filename, len, "%s/images/generic.png", DocumentRoot);
3177 }
f7deaa1a 3178 else if (!strncmp(con->uri, "/rss/", 5) && !strchr(con->uri + 5, '/'))
3179 snprintf(filename, len, "%s/rss/%s", CacheDir, con->uri + 5);
ef416fc2 3180 else if (!strncmp(con->uri, "/admin/conf/", 12))
3181 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
3182 else if (!strncmp(con->uri, "/admin/log/", 11))
3183 {
2e4ff8af 3184 if (!strncmp(con->uri + 11, "access_log", 10) && AccessLog[0] == '/')
ef416fc2 3185 strlcpy(filename, AccessLog, len);
2e4ff8af 3186 else if (!strncmp(con->uri + 11, "error_log", 9) && ErrorLog[0] == '/')
ef416fc2 3187 strlcpy(filename, ErrorLog, len);
2e4ff8af 3188 else if (!strncmp(con->uri + 11, "page_log", 8) && PageLog[0] == '/')
ef416fc2 3189 strlcpy(filename, PageLog, len);
3190 else
3191 return (NULL);
3192 }
d6ae789d 3193 else if (con->language)
db1f069b
MS		 3194 {
3195 snprintf(language, sizeof(language), "/%s", con->language->language);
3196 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
3197 }
ef416fc2 3198 else
3199 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3200
3201 if ((ptr = strchr(filename, '?')) != NULL)
3202 *ptr = '\0';
3203
3204 /*
3205 * Grab the status for this language; if there isn't a language-specific file
3206 * then fallback to the default one...
3207 */
3208
db1f069b 3209 if ((status = stat(filename, filestats)) != 0 && language[0] &&
7cf5915e 3210 strncmp(con->uri, "/icons/", 7) &&
d6ae789d 3211 strncmp(con->uri, "/ppd/", 5) &&
7cf5915e 3212 strncmp(con->uri, "/rss/", 5) &&
d6ae789d 3213 strncmp(con->uri, "/admin/conf/", 12) &&
3214 strncmp(con->uri, "/admin/log/", 11))
ef416fc2 3215 {
3216 /*
d6ae789d 3217 * Drop the country code...
ef416fc2 3218 */
3219
db1f069b
MS		 3220 language[3] = '\0';
3221 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
d6ae789d 3222
3223 if ((ptr = strchr(filename, '?')) != NULL)
3224 *ptr = '\0';
3225
3226 if ((status = stat(filename, filestats)) != 0)
ef416fc2 3227 {
d6ae789d 3228 /*
3229 * Drop the language prefix and try the root directory...
3230 */
3231
db1f069b 3232 language[0] = '\0';
ef416fc2 3233 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3234
3235 if ((ptr = strchr(filename, '?')) != NULL)
3236 *ptr = '\0';
3237
3238 status = stat(filename, filestats);
3239 }
3240 }
3241
3242 /*
3243 * If we're found a directory, get the index.html file instead...
3244 */
3245
3246 if (!status && S_ISDIR(filestats->st_mode))
3247 {
db1f069b
MS		 3248 /*
3249 * Make sure the URI ends with a slash...
3250 */
ef416fc2 3251
db1f069b
MS		 3252 if (con->uri[strlen(con->uri) - 1] != '/')
3253 strlcat(con->uri, "/", sizeof(con->uri));
ef416fc2 3254
db1f069b
MS		 3255 /*
3256 * Find the directory index file, trying every language...
3257 */
ef416fc2 3258
db1f069b 3259 do
ef416fc2 3260 {
db1f069b
MS		 3261 if (status && language[0])
3262 {
3263 /*
3264 * Try a different language subset...
3265 */
3266
3267 if (language[3])
3268 language[0] = '\0'; /* Strip country code */
3269 else
3270 language[0] = '\0'; /* Strip language */
3271 }
3272
3273 /*
3274 * Look for the index file...
3275 */
3276
3277 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
3278
3279 if ((ptr = strchr(filename, '?')) != NULL)
3280 *ptr = '\0';
3281
3282 ptr = filename + strlen(filename);
3283 plen = len - (ptr - filename);
3284
3285 strlcpy(ptr, "index.html", plen);
ef416fc2 3286 status = stat(filename, filestats);
db1f069b
MS		 3287
3288#ifdef HAVE_JAVA
3289 if (status)
3290 {
3291 strlcpy(ptr, "index.class", plen);
3292 status = stat(filename, filestats);
3293 }
ef416fc2 3294#endif /* HAVE_JAVA */
3295
3296#ifdef HAVE_PERL
db1f069b
MS		 3297 if (status)
3298 {
3299 strlcpy(ptr, "index.pl", plen);
3300 status = stat(filename, filestats);
3301 }
ef416fc2 3302#endif /* HAVE_PERL */
3303
3304#ifdef HAVE_PHP
db1f069b
MS		 3305 if (status)
3306 {
3307 strlcpy(ptr, "index.php", plen);
3308 status = stat(filename, filestats);
3309 }
ef416fc2 3310#endif /* HAVE_PHP */
3311
3312#ifdef HAVE_PYTHON
db1f069b
MS		 3313 if (status)
3314 {
3315 strlcpy(ptr, "index.pyc", plen);
3316 status = stat(filename, filestats);
3317 }
ef416fc2 3318
db1f069b
MS		 3319 if (status)
3320 {
3321 strlcpy(ptr, "index.py", plen);
3322 status = stat(filename, filestats);
3323 }
ef416fc2 3324#endif /* HAVE_PYTHON */
db1f069b
MS		 3325
3326 }
3327 while (status && language[0]);
ef416fc2 3328 }
3329
b9faaae1 3330 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3331 "[Client %d] get_file filestats=%p, filename=%p, len=%d, "
3332 "returning \"%s\".", con->http.fd, filestats, filename, len,
b9faaae1 3333 status ? "(null)" : filename);
ef416fc2 3334
ef416fc2 3335 if (status)
3336 return (NULL);
3337 else
3338 return (filename);
3339}
3340
3341
3342/*
c41769ff 3343 * 'install_cupsd_conf()' - Install a configuration file.
ef416fc2 3344 */
3345
3346static http_status_t /* O - Status */
c41769ff 3347install_cupsd_conf(cupsd_client_t *con) /* I - Connection */
ef416fc2 3348{
321d8d57 3349 char filename[1024]; /* Configuration filename */
ef416fc2 3350 cups_file_t *in, /* Input file */
3351 *out; /* Output file */
321d8d57
MS		 3352 char buffer[16384]; /* Copy buffer */
3353 ssize_t bytes; /* Number of bytes */
ef416fc2 3354
3355
3356 /*
321d8d57 3357 * Open the request file...
ef416fc2 3358 */
3359
321d8d57 3360 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
ef416fc2 3361 {
321d8d57
MS		 3362 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\": %s",
3363 con->filename, strerror(errno));
3364 return (HTTP_SERVER_ERROR);
ef416fc2 3365 }
3366
3367 /*
321d8d57 3368 * Open the new config file...
ef416fc2 3369 */
3370
cb7f98ee 3371 if ((out = cupsdCreateConfFile(ConfigurationFile, ConfigFilePerm)) == NULL)
ef416fc2 3372 {
3373 cupsFileClose(in);
ef416fc2 3374 return (HTTP_SERVER_ERROR);
3375 }
3376
cb7f98ee
MS		 3377 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...",
3378 ConfigurationFile);
ef416fc2 3379
3380 /*
3381 * Copy from the request to the new config file...
3382 */
3383
3384 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
3385 if (cupsFileWrite(out, buffer, bytes) < bytes)
3386 {
3387 cupsdLogMessage(CUPSD_LOG_ERROR,
321d8d57 3388 "Unable to copy to config file \"%s\": %s",
cb7f98ee 3389 ConfigurationFile, strerror(errno));
ef416fc2 3390
3391 cupsFileClose(in);
3392 cupsFileClose(out);
321d8d57 3393
cb7f98ee
MS		 3394 snprintf(filename, sizeof(filename), "%s.N", ConfigurationFile);
3395 cupsdUnlinkOrRemoveFile(filename);
ef416fc2 3396
3397 return (HTTP_SERVER_ERROR);
3398 }
3399
3400 /*
3401 * Close the files...
3402 */
3403
3404 cupsFileClose(in);
ef416fc2 3405
cb7f98ee 3406 if (cupsdCloseCreatedConfFile(out, ConfigurationFile))
ef416fc2 3407 return (HTTP_SERVER_ERROR);
ef416fc2 3408
3409 /*
3410 * Remove the request file...
3411 */
3412
cb7f98ee 3413 cupsdUnlinkOrRemoveFile(con->filename);
ef416fc2 3414 cupsdClearString(&con->filename);
3415
ef416fc2 3416 /*
c41769ff 3417 * Set the NeedReload flag...
ef416fc2 3418 */
3419
c41769ff 3420 NeedReload = RELOAD_CUPSD;
ef416fc2 3421 ReloadTime = time(NULL);
3422
3423 /*
3424 * Return that the file was created successfully...
3425 */
3426
3427 return (HTTP_CREATED);
3428}
3429
3430
e1d6a774 3431/*
3432 * 'is_cgi()' - Is the resource a CGI script/program?
3433 */
3434
3435static int /* O - 1 = CGI, 0 = file */
3436is_cgi(cupsd_client_t *con, /* I - Client connection */
3437 const char *filename, /* I - Real filename */
3438 struct stat *filestats, /* I - File information */
3439 mime_type_t *type) /* I - MIME type */
3440{
3441 const char *options; /* Options on URL */
3442
3443
e1d6a774 3444 /*
3445 * Get the options, if any...
3446 */
3447
3448 if ((options = strchr(con->uri, '?')) != NULL)
a0f6818e
MS		 3449 {
3450 options ++;
3451 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", options);
3452 }
b86bc4cf 3453
e1d6a774 3454 /*
3455 * Check for known types...
3456 */
3457
88f9aafc 3458 if (!type || _cups_strcasecmp(type->super, "application"))
e1d6a774 3459 {
b9faaae1 3460 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3461 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3462 "type=%s/%s, returning 0", con->http.fd, filename,
3463 filestats, type ? type->super : "unknown",
b9faaae1 3464 type ? type->type : "unknown");
e1d6a774 3465 return (0);
3466 }
3467
88f9aafc 3468 if (!_cups_strcasecmp(type->type, "x-httpd-cgi") &&
e1d6a774 3469 (filestats->st_mode & 0111))
3470 {
3471 /*
3472 * "application/x-httpd-cgi" is a CGI script.
3473 */
3474
3475 cupsdSetString(&con->command, filename);
3476
a0f6818e
MS		 3477 if (options)
3478 cupsdSetStringf(&con->options, " %s", options);
e1d6a774 3479
3480 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3481 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3482 "type=%s/%s, returning 1", con->http.fd, filename,
3483 filestats, type->super, type->type);
e1d6a774 3484 return (1);
3485 }
3486#ifdef HAVE_JAVA
88f9aafc 3487 else if (!_cups_strcasecmp(type->type, "x-httpd-java"))
e1d6a774 3488 {
3489 /*
3490 * "application/x-httpd-java" is a Java servlet.
3491 */
3492
3493 cupsdSetString(&con->command, CUPS_JAVA);
3494
3495 if (options)
b94498cf 3496 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3497 else
b94498cf 3498 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3499
3500 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3501 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3502 "type=%s/%s, returning 1", con->http.fd, filename,
3503 filestats, type->super, type->type);
e1d6a774 3504 return (1);
3505 }
3506#endif /* HAVE_JAVA */
3507#ifdef HAVE_PERL
88f9aafc 3508 else if (!_cups_strcasecmp(type->type, "x-httpd-perl"))
e1d6a774 3509 {
3510 /*
3511 * "application/x-httpd-perl" is a Perl page.
3512 */
3513
3514 cupsdSetString(&con->command, CUPS_PERL);
3515
3516 if (options)
b94498cf 3517 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3518 else
b94498cf 3519 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3520
3521 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3522 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3523 "type=%s/%s, returning 1", con->http.fd, filename,
3524 filestats, type->super, type->type);
e1d6a774 3525 return (1);
3526 }
3527#endif /* HAVE_PERL */
3528#ifdef HAVE_PHP
88f9aafc 3529 else if (!_cups_strcasecmp(type->type, "x-httpd-php"))
e1d6a774 3530 {
3531 /*
3532 * "application/x-httpd-php" is a PHP page.
3533 */
3534
3535 cupsdSetString(&con->command, CUPS_PHP);
3536
3537 if (options)
b94498cf 3538 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3539 else
b94498cf 3540 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3541
3542 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3543 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3544 "type=%s/%s, returning 1", con->http.fd, filename,
3545 filestats, type->super, type->type);
e1d6a774 3546 return (1);
3547 }
3548#endif /* HAVE_PHP */
3549#ifdef HAVE_PYTHON
88f9aafc 3550 else if (!_cups_strcasecmp(type->type, "x-httpd-python"))
e1d6a774 3551 {
3552 /*
3553 * "application/x-httpd-python" is a Python page.
3554 */
3555
3556 cupsdSetString(&con->command, CUPS_PYTHON);
3557
3558 if (options)
b94498cf 3559 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3560 else
b94498cf 3561 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3562
3563 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3564 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3565 "type=%s/%s, returning 1", con->http.fd, filename,
3566 filestats, type->super, type->type);
e1d6a774 3567 return (1);
3568 }
3569#endif /* HAVE_PYTHON */
3570
b9faaae1 3571 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3572 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3573 "type=%s/%s, returning 0", con->http.fd, filename,
3574 filestats, type->super, type->type);
e1d6a774 3575 return (0);
3576}
3577
3578
ef416fc2 3579/*
3580 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3581 */
3582
3583static int /* O - 0 if relative, 1 if absolute */
3584is_path_absolute(const char *path) /* I - Input path */
3585{
3586 /*
3587 * Check for a leading slash...
3588 */
3589
3590 if (path[0] != '/')
3591 return (0);
3592
3593 /*
3594 * Check for "/.." in the path...
3595 */
3596
3597 while ((path = strstr(path, "/..")) != NULL)
3598 {
3599 if (!path[3] || path[3] == '/')
3600 return (0);
3601
3602 path ++;
3603 }
3604
3605 /*
3606 * If we haven't found any relative paths, return 1 indicating an
3607 * absolute path...
3608 */
3609
3610 return (1);
3611}
3612
3613
3614/*
3615 * 'pipe_command()' - Pipe the output of a command to the remote client.
3616 */
3617
3618static int /* O - Process ID */
3619pipe_command(cupsd_client_t *con, /* I - Client connection */
3620 int infile, /* I - Standard input for command */
3621 int *outfile, /* O - Standard output for command */
3622 char *command, /* I - Command to run */
3623 char *options, /* I - Options for command */
3624 int root) /* I - Run as root? */
3625{
3626 int i; /* Looping var */
3627 int pid; /* Process ID */
b423cd4c 3628 char *commptr, /* Command string pointer */
3629 commch; /* Command string character */
ef416fc2 3630 char *uriptr; /* URI string pointer */
3631 int fds[2]; /* Pipe FDs */
3632 int argc; /* Number of arguments */
3633 int envc; /* Number of environment variables */
3634 char argbuf[10240], /* Argument buffer */
3635 *argv[100], /* Argument strings */
b94498cf 3636 *envp[MAX_ENV + 20]; /* Environment variables */
c7017ecc 3637 char auth_type[256], /* AUTH_TYPE environment variable */
b94498cf 3638 content_length[1024], /* CONTENT_LENGTH environment variable */
ef416fc2 3639 content_type[1024], /* CONTENT_TYPE environment variable */
3640 http_cookie[32768], /* HTTP_COOKIE environment variable */
f7deaa1a 3641 http_referer[1024], /* HTTP_REFERER environment variable */
ef416fc2 3642 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3643 lang[1024], /* LANG environment variable */
b423cd4c 3644 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 3645 remote_addr[1024], /* REMOTE_ADDR environment variable */
3646 remote_host[1024], /* REMOTE_HOST environment variable */
3647 remote_user[1024], /* REMOTE_USER environment variable */
b94498cf 3648 script_filename[1024], /* SCRIPT_FILENAME environment variable */
ef416fc2 3649 script_name[1024], /* SCRIPT_NAME environment variable */
3650 server_name[1024], /* SERVER_NAME environment variable */
3651 server_port[1024]; /* SERVER_PORT environment variable */
7dfedb92 3652 ipp_attribute_t *attr; /* attributes-natural-language attribute */
ef416fc2 3653
3654
3655 /*
3656 * Parse a copy of the options string, which is of the form:
3657 *
b423cd4c 3658 * argument+argument+argument
3659 * ?argument+argument+argument
3660 * param=value&param=value
3661 * ?param=value&param=value
3662 * /name?argument+argument+argument
3663 * /name?param=value&param=value
ef416fc2 3664 *
3665 * If the string contains an "=" character after the initial name,
3666 * then we treat it as a HTTP GET form request and make a copy of
3667 * the remaining string for the environment variable.
3668 *
3669 * The string is always parsed out as command-line arguments, to
3670 * be consistent with Apache...
3671 */
3672
3673 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3674 "[Client %d] pipe_command infile=%d, outfile=%p, "
3675 "command=\"%s\", options=\"%s\", root=%d",
3676 con->http.fd, infile, outfile, command,
b9faaae1 3677 options ? options : "(null)", root);
ef416fc2 3678
b86bc4cf 3679 argv[0] = command;
ef416fc2 3680
b423cd4c 3681 if (options)
c7017ecc
MS		 3682 {
3683 commptr = options;
3684 if (*commptr == ' ')
3685 commptr ++;
3686 strlcpy(argbuf, commptr, sizeof(argbuf));
3687 }
b423cd4c 3688 else
3689 argbuf[0] = '\0';
3690
3691 if (argbuf[0] == '/')
ef416fc2 3692 {
3693 /*
b423cd4c 3694 * Found some trailing path information, set PATH_INFO...
ef416fc2 3695 */
3696
b423cd4c 3697 if ((commptr = strchr(argbuf, '?')) == NULL)
3698 commptr = argbuf + strlen(argbuf);
ef416fc2 3699
b423cd4c 3700 commch = *commptr;
3701 *commptr = '\0';
3702 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
3703 *commptr = commch;
3704 }
3705 else
3706 {
3707 commptr = argbuf;
3708 path_info[0] = '\0';
b94498cf 3709
3710 if (*commptr == ' ')
3711 commptr ++;
b423cd4c 3712 }
ef416fc2 3713
cb7f98ee 3714 if (*commptr == '?' && con->operation == HTTP_STATE_GET && !con->query_string)
b423cd4c 3715 {
3716 commptr ++;
b86bc4cf 3717 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr);
b423cd4c 3718 }
ef416fc2 3719
b423cd4c 3720 argc = 1;
ef416fc2 3721
b423cd4c 3722 if (*commptr)
3723 {
3724 argv[argc ++] = commptr;
ef416fc2 3725
b423cd4c 3726 for (; *commptr && argc < 99; commptr ++)
3727 {
ef416fc2 3728 /*
b423cd4c 3729 * Break arguments whenever we see a + or space...
ef416fc2 3730 */
3731
b423cd4c 3732 if (*commptr == ' ' || *commptr == '+')
3733 {
3734 while (*commptr == ' ' || *commptr == '+')
3735 *commptr++ = '\0';
ef416fc2 3736
b423cd4c 3737 /*
3738 * If we don't have a blank string, save it as another argument...
3739 */
ef416fc2 3740
b423cd4c 3741 if (*commptr)
3742 {
3743 argv[argc] = commptr;
3744 argc ++;
3745 }
3746 else
3747 break;
3748 }
3749 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
3750 isxdigit(commptr[2] & 255))
3751 {
3752 /*
3753 * Convert the %xx notation to the individual character.
3754 */
ef416fc2 3755
b423cd4c 3756 if (commptr[1] >= '0' && commptr[1] <= '9')
3757 *commptr = (commptr[1] - '0') << 4;
3758 else
3759 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
ef416fc2 3760
b423cd4c 3761 if (commptr[2] >= '0' && commptr[2] <= '9')
3762 *commptr |= commptr[2] - '0';
3763 else
3764 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 3765
b423cd4c 3766 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 3767
b423cd4c 3768 /*
3769 * Check for a %00 and break if that is the case...
3770 */
ef416fc2 3771
b423cd4c 3772 if (!*commptr)
3773 break;
3774 }
ef416fc2 3775 }
3776 }
3777
3778 argv[argc] = NULL;
3779
ef416fc2 3780 /*
3781 * Setup the environment variables as needed...
3782 */
3783
b94498cf 3784 if (con->username[0])
3785 {
c7017ecc 3786 snprintf(auth_type, sizeof(auth_type), "AUTH_TYPE=%s",
b94498cf 3787 httpGetField(HTTP(con), HTTP_FIELD_AUTHORIZATION));
3788
3789 if ((uriptr = strchr(auth_type + 10, ' ')) != NULL)
3790 *uriptr = '\0';
3791 }
3792 else
3793 auth_type[0] = '\0';
3794
7dfedb92
MS		 3795 if (con->request &&
3796 (attr = ippFindAttribute(con->request, "attributes-natural-language",
3797 IPP_TAG_LANGUAGE)) != NULL)
3798 {
3799 switch (strlen(attr->values[0].string.text))
3800 {
3801 default :
3802 /*
3803 * This is an unknown or badly formatted language code; use
3804 * the POSIX locale...
3805 */
3806
5a9febac 3807 strlcpy(lang, "LANG=C", sizeof(lang));
7dfedb92
MS		 3808 break;
3809
3810 case 2 :
3811 /*
3812 * Just the language code (ll)...
3813 */
3814
3815 snprintf(lang, sizeof(lang), "LANG=%s.UTF8",
3816 attr->values[0].string.text);
3817 break;
3818
3819 case 5 :
3820 /*
3821 * Language and country code (ll-cc)...
3822 */
3823
3824 snprintf(lang, sizeof(lang), "LANG=%c%c_%c%c.UTF8",
3825 attr->values[0].string.text[0],
3826 attr->values[0].string.text[1],
3827 toupper(attr->values[0].string.text[3] & 255),
3828 toupper(attr->values[0].string.text[4] & 255));
3829 break;
3830 }
3831 }
3832 else if (con->language)
3833 snprintf(lang, sizeof(lang), "LANG=%s.UTF8", con->language->language);
ef416fc2 3834 else
5a9febac 3835 strlcpy(lang, "LANG=C", sizeof(lang));
ef416fc2 3836
5a9febac 3837 strlcpy(remote_addr, "REMOTE_ADDR=", sizeof(remote_addr));
ef416fc2 3838 httpAddrString(con->http.hostaddr, remote_addr + 12,
3839 sizeof(remote_addr) - 12);
3840
3841 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
3842 con->http.hostname);
3843
3844 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
3845 if ((uriptr = strchr(script_name, '?')) != NULL)
3846 *uriptr = '\0';
3847
b94498cf 3848 snprintf(script_filename, sizeof(script_filename), "SCRIPT_FILENAME=%s%s",
3849 DocumentRoot, script_name + 12);
3850
ef416fc2 3851 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
3852
0268488e
MS		 3853 if (con->http.fields[HTTP_FIELD_HOST][0])
3854 {
3855 char *nameptr; /* Pointer to ":port" */
3856
3857 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3858 con->http.fields[HTTP_FIELD_HOST]);
3859 if ((nameptr = strrchr(server_name, ':')) != NULL && !strchr(nameptr, ']'))
3860 *nameptr = '\0'; /* Strip trailing ":port" */
3861 }
3862 else
3863 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3864 con->servername);
ef416fc2 3865
3866 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
3867
b94498cf 3868 if (auth_type[0])
3869 envp[envc ++] = auth_type;
3870
ef416fc2 3871 envp[envc ++] = lang;
3872 envp[envc ++] = "REDIRECT_STATUS=1";
b94498cf 3873 envp[envc ++] = "GATEWAY_INTERFACE=CGI/1.1";
ef416fc2 3874 envp[envc ++] = server_name;
3875 envp[envc ++] = server_port;
3876 envp[envc ++] = remote_addr;
3877 envp[envc ++] = remote_host;
3878 envp[envc ++] = script_name;
b94498cf 3879 envp[envc ++] = script_filename;
ef416fc2 3880
b423cd4c 3881 if (path_info[0])
3882 envp[envc ++] = path_info;
3883
ef416fc2 3884 if (con->username[0])
3885 {
3886 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
3887
3888 envp[envc ++] = remote_user;
3889 }
3890
3891 if (con->http.version == HTTP_1_1)
3892 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
3893 else if (con->http.version == HTTP_1_0)
3894 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
3895 else
3896 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
3897
3898 if (con->http.cookie)
3899 {
3900 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
3901 con->http.cookie);
3902 envp[envc ++] = http_cookie;
3903 }
3904
3905 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
3906 {
3907 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
3908 con->http.fields[HTTP_FIELD_USER_AGENT]);
3909 envp[envc ++] = http_user_agent;
3910 }
3911
f7deaa1a 3912 if (con->http.fields[HTTP_FIELD_REFERER][0])
3913 {
3914 snprintf(http_referer, sizeof(http_referer), "HTTP_REFERER=%s",
3915 con->http.fields[HTTP_FIELD_REFERER]);
3916 envp[envc ++] = http_referer;
3917 }
3918
cb7f98ee 3919 if (con->operation == HTTP_STATE_GET)
ef416fc2 3920 {
ef416fc2 3921 envp[envc ++] = "REQUEST_METHOD=GET";
3922
b86bc4cf 3923 if (con->query_string)
ef416fc2 3924 {
3925 /*
3926 * Add GET form variables after ?...
3927 */
3928
b86bc4cf 3929 envp[envc ++] = con->query_string;
ef416fc2 3930 }
3dfe78b3
MS		 3931 else
3932 envp[envc ++] = "QUERY_STRING=";
ef416fc2 3933 }
3934 else
3935 {
e1d6a774 3936 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
3937 CUPS_LLCAST con->bytes);
ef416fc2 3938 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
3939 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
3940
3941 envp[envc ++] = "REQUEST_METHOD=POST";
3942 envp[envc ++] = content_length;
3943 envp[envc ++] = content_type;
3944 }
3945
3946 /*
3947 * Tell the CGI if we are using encryption...
3948 */
3949
a74454a7 3950 if (con->http.tls)
ef416fc2 3951 envp[envc ++] = "HTTPS=ON";
3952
3953 /*
3954 * Terminate the environment array...
3955 */
3956
3957 envp[envc] = NULL;
3958
38e73f87 3959 if (LogLevel >= CUPSD_LOG_DEBUG)
ef416fc2 3960 {
3961 for (i = 0; i < argc; i ++)
38e73f87
MS		 3962 cupsdLogMessage(CUPSD_LOG_DEBUG,
3963 "[CGI] argv[%d] = \"%s\"", i, argv[i]);
ef416fc2 3964 for (i = 0; i < envc; i ++)
38e73f87
MS		 3965 cupsdLogMessage(CUPSD_LOG_DEBUG,
3966 "[CGI] envp[%d] = \"%s\"", i, envp[i]);
ef416fc2 3967 }
3968
3969 /*
3970 * Create a pipe for the output...
3971 */
3972
3973 if (cupsdOpenPipe(fds))
3974 {
38e73f87 3975 cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to create pipe for %s - %s",
ef416fc2 3976 argv[0], strerror(errno));
3977 return (0);
3978 }
3979
3980 /*
3981 * Then execute the command...
3982 */
3983
3984 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
38e73f87 3985 -1, -1, root, DefaultProfile, NULL, &pid) < 0)
ef416fc2 3986 {
3987 /*
3988 * Error - can't fork!
3989 */
3990
38e73f87 3991 cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to start %s - %s", argv[0],
ef416fc2 3992 strerror(errno));
3993
3994 cupsdClosePipe(fds);
3995 pid = 0;
3996 }
3997 else
3998 {
3999 /*
4000 * Fork successful - return the PID...
4001 */
4002
4003 if (con->username[0])
0fa6c7fa 4004 cupsdAddCert(pid, con->username, con->type);
ef416fc2 4005
38e73f87 4006 cupsdLogMessage(CUPSD_LOG_DEBUG, "[CGI] Started %s (PID %d)", command, pid);
ef416fc2 4007
4008 *outfile = fds[0];
4009 close(fds[1]);
4010 }
4011
ef416fc2 4012 return (pid);
4013}
4014
4015
e07d4801
MS		 4016/*
4017 * 'valid_host()' - Is the Host: field valid?
4018 */
4019
4020static int /* O - 1 if valid, 0 if not */
4021valid_host(cupsd_client_t *con) /* I - Client connection */
4022{
4023 cupsd_alias_t *a; /* Current alias */
4024 cupsd_netif_t *netif; /* Current network interface */
4025 const char *host, /* Host field */
4026 *end; /* End character */
4027
4028
4029 host = con->http.fields[HTTP_FIELD_HOST];
4030
4031 if (httpAddrLocalhost(con->http.hostaddr))
4032 {
4033 /*
4034 * Only allow "localhost" or the equivalent IPv4 or IPv6 numerical
4035 * addresses when accessing CUPS via the loopback interface...
4036 */
4037
88f9aafc
MS		 4038 return (!_cups_strcasecmp(host, "localhost") ||
4039 !_cups_strncasecmp(host, "localhost:", 10) ||
4040 !_cups_strcasecmp(host, "localhost.") ||
4041 !_cups_strncasecmp(host, "localhost.:", 11) ||
e07d4801 4042#ifdef __linux
88f9aafc
MS		 4043 !_cups_strcasecmp(host, "localhost.localdomain") ||
4044 !_cups_strncasecmp(host, "localhost.localdomain:", 22) ||
e07d4801
MS		 4045#endif /* __linux */
4046 !strcmp(host, "127.0.0.1") ||
4047 !strncmp(host, "127.0.0.1:", 10) ||
4048 !strcmp(host, "[::1]") ||
4049 !strncmp(host, "[::1]:", 6));
4050 }
4051
37e7e6e0 4052#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
e07d4801
MS		 4053 /*
4054 * Check if the hostname is something.local (Bonjour); if so, allow it.
4055 */
4056
a29fd7dd
MS		 4057 if ((end = strrchr(host, '.')) != NULL && end > host &&
4058 (!end[1] || end[1] == ':'))
4059 {
4060 /*
4061 * "." on end, work back to second-to-last "."...
4062 */
4063 for (end --; end > host && *end != '.'; end --);
4064 }
4065
4066 if (end && (!_cups_strcasecmp(end, ".local") ||
4067 !_cups_strncasecmp(end, ".local:", 7) ||
4068 !_cups_strcasecmp(end, ".local.") ||
4069 !_cups_strncasecmp(end, ".local.:", 8)))
e07d4801 4070 return (1);
37e7e6e0 4071#endif /* HAVE_DNSSD || HAVE_AVAHI */
e07d4801
MS		 4072
4073 /*
4074 * Check if the hostname is an IP address...
4075 */
4076
4077 if (isdigit(*host & 255) || *host == '[')
4078 {
4079 /*
4080 * Possible IPv4/IPv6 address...
4081 */
4082
4083 char temp[1024], /* Temporary string */
4084 *ptr; /* Pointer into temporary string */
4085 http_addrlist_t *addrlist; /* List of addresses */
4086
4087
4088 strlcpy(temp, host, sizeof(temp));
4089 if ((ptr = strrchr(temp, ':')) != NULL && !strchr(ptr, ']'))
4090 *ptr = '\0'; /* Strip :port from host value */
4091
4092 if ((addrlist = httpAddrGetList(temp, AF_UNSPEC, NULL)) != NULL)
4093 {
4094 /*
4095 * Good IPv4/IPv6 address...
4096 */
4097
4098 httpAddrFreeList(addrlist);
4099 return (1);
4100 }
4101 }
4102
4103 /*
4104 * Check for (alias) name matches...
4105 */
4106
4107 for (a = (cupsd_alias_t *)cupsArrayFirst(ServerAlias);
4108 a;
4109 a = (cupsd_alias_t *)cupsArrayNext(ServerAlias))
4110 {
4111 /*
4112 * "ServerAlias *" allows all host values through...
4113 */
4114
4115 if (!strcmp(a->name, "*"))
4116 return (1);
4117
88f9aafc 4118 if (!_cups_strncasecmp(host, a->name, a->namelen))
e07d4801
MS		 4119 {
4120 /*
4121 * Prefix matches; check the character at the end - it must be ":", ".",
4122 * ".:", or nul...
4123 */
4124
4125 end = host + a->namelen;
4126
4127 if (!*end || *end == ':' || (*end == '.' && (!end[1] || end[1] == ':')))
4128 return (1);
4129 }
4130 }
4131
37e7e6e0 4132#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
e07d4801
MS		 4133 for (a = (cupsd_alias_t *)cupsArrayFirst(DNSSDAlias);
4134 a;
4135 a = (cupsd_alias_t *)cupsArrayNext(DNSSDAlias))
4136 {
4137 /*
4138 * "ServerAlias *" allows all host values through...
4139 */
4140
4141 if (!strcmp(a->name, "*"))
4142 return (1);
4143
88f9aafc 4144 if (!_cups_strncasecmp(host, a->name, a->namelen))
e07d4801
MS		 4145 {
4146 /*
4147 * Prefix matches; check the character at the end - it must be ":", ".",
4148 * ".:", or nul...
4149 */
4150
4151 end = host + a->namelen;
4152
4153 if (!*end || *end == ':' || (*end == '.' && (!end[1] || end[1] == ':')))
4154 return (1);
4155 }
4156 }
37e7e6e0 4157#endif /* HAVE_DNSSD || HAVE_AVAHI */
e07d4801
MS		 4158
4159 /*
4160 * Check for interface hostname matches...
4161 */
4162
4163 for (netif = (cupsd_netif_t *)cupsArrayFirst(NetIFList);
4164 netif;
4165 netif = (cupsd_netif_t *)cupsArrayNext(NetIFList))
4166 {
88f9aafc 4167 if (!_cups_strncasecmp(host, netif->hostname, netif->hostlen))
e07d4801
MS		 4168 {
4169 /*
4170 * Prefix matches; check the character at the end - it must be ":", ".",
4171 * ".:", or nul...
4172 */
4173
4174 end = host + netif->hostlen;
4175
4176 if (!*end || *end == ':' || (*end == '.' && (!end[1] || end[1] == ':')))
4177 return (1);
4178 }
4179 }
4180
4181 return (0);
4182}
4183
4184
ef416fc2 4185/*
a74454a7 4186 * 'write_file()' - Send a file via HTTP.
e1d6a774 4187 */
4188
4189static int /* O - 0 on failure, 1 on success */
a74454a7 4190write_file(cupsd_client_t *con, /* I - Client connection */
4191 http_status_t code, /* I - HTTP status */
4192 char *filename, /* I - Filename */
4193 char *type, /* I - File type */
4194 struct stat *filestats) /* O - File information */
e1d6a774 4195{
4196 con->file = open(filename, O_RDONLY);
4197
b9faaae1 4198 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 4199 "[Client %d] write_file code=%d, filename=\"%s\" (%d), "
4200 "type=\"%s\", filestats=%p", con->http.fd,
b9faaae1 4201 code, filename, con->file, type ? type : "(null)", filestats);
e1d6a774 4202
4203 if (con->file < 0)
4204 return (0);
4205
4206 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
4207
4208 con->pipe_pid = 0;
4209
5bd77a73 4210 if (!cupsdSendHeader(con, code, type, CUPSD_AUTH_NONE))
e1d6a774 4211 return (0);
4212
4213 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
4214 httpGetDateString(filestats->st_mtime)) < 0)
4215 return (0);
4216 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
4217 CUPS_LLCAST filestats->st_size) < 0)
4218 return (0);
4219 if (httpPrintf(HTTP(con), "\r\n") < 0)
4220 return (0);
4221
07725fee 4222 if (cupsdFlushHeader(con) < 0)
4223 return (0);
d09495fa 4224
cb7f98ee 4225 con->http.data_encoding = HTTP_ENCODING_LENGTH;
e1d6a774 4226 con->http.data_remaining = filestats->st_size;
4227
4228 if (con->http.data_remaining <= INT_MAX)
4229 con->http._data_remaining = con->http.data_remaining;
4230 else
4231 con->http._data_remaining = INT_MAX;
4232
f7deaa1a 4233 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient,
4234 (cupsd_selfunc_t)cupsdWriteClient, con);
e1d6a774 4235
4236 return (1);
4237}
4238
4239
4240/*
f899b121 4241 * 'write_pipe()' - Flag that data is available on the CGI pipe.
4242 */
4243
4244static void
4245write_pipe(cupsd_client_t *con) /* I - Client connection */
4246{
b9faaae1 4247 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 4248 "[Client %d] write_pipe CGI output on fd %d",
4249 con->http.fd, con->file);
f899b121 4250
4251 con->file_ready = 1;
4252
4253 cupsdRemoveSelect(con->file);
4254 cupsdAddSelect(con->http.fd, NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
4255}
4256
4257
4258/*
cb7f98ee 4259 * End of "$Id: client.c 10886 2013-03-08 17:56:02Z mike $".
ef416fc2 4260 */
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