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[thirdparty/cups.git] / scheduler / client.c
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ef416fc2 1/*
f2d18633 2 * "$Id$"
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));
6961465f 439 else if (HostNameLookups)
22c9029b 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 1304 if ((!strncmp(con->uri, "/ppd/", 5) ||
6961465f
MS		 1305 !strncmp(con->uri, "/printers/", 10) ||
1306 !strncmp(con->uri, "/classes/", 9)) &&
ef416fc2 1307 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1308 {
1309 /*
1310 * Send PPD file - get the real printer name since printer
1311 * names are not case sensitive but filenames can be...
1312 */
1313
1314 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1315
db8b865d
MS		 1316 if (!strncmp(con->uri, "/ppd/", 5))
1317 p = cupsdFindPrinter(con->uri + 5);
6961465f 1318 else if (!strncmp(con->uri, "/printers/", 10))
db8b865d 1319 p = cupsdFindPrinter(con->uri + 10);
6961465f
MS		 1320 else
1321 {
1322 p = cupsdFindClass(con->uri + 9);
1323
1324 if (p)
1325 {
1326 int i; /* Looping var */
1327
1328 for (i = 0; i < p->num_printers; i ++)
1329 {
1330 if (!(p->printers[i]->type & CUPS_PRINTER_CLASS))
1331 {
1332 char ppdname[1024];/* PPD filename */
1333
1334 snprintf(ppdname, sizeof(ppdname), "%s/ppd/%s.ppd",
1335 ServerRoot, p->printers[i]->name);
1336 if (!access(ppdname, 0))
1337 {
1338 p = p->printers[i];
1339 break;
1340 }
1341 }
1342 }
1343
1344 if (i >= p->num_printers)
1345 p = NULL;
1346 }
1347 }
db8b865d
MS		 1348
1349 if (p)
1350 {
ef416fc2 1351 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
db8b865d 1352 }
ef416fc2 1353 else
1354 {
5bd77a73 1355 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1356 {
1357 cupsdCloseClient(con);
1358 return;
1359 }
ef416fc2 1360
1361 break;
1362 }
1363 }
db8b865d
MS		 1364 else if ((!strncmp(con->uri, "/icons/", 7) ||
1365 !strncmp(con->uri, "/printers/", 10) ||
7cf5915e
MS		 1366 !strncmp(con->uri, "/classes/", 9)) &&
1367 !strcmp(con->uri + strlen(con->uri) - 4, ".png"))
1368 {
1369 /*
1370 * Send icon file - get the real queue name since queue names are
1371 * not case sensitive but filenames can be...
1372 */
1373
1374 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".png" */
1375
db8b865d
MS		 1376 if (!strncmp(con->uri, "/icons/", 7))
1377 p = cupsdFindPrinter(con->uri + 7);
1378 else if (!strncmp(con->uri, "/printers/", 10))
7cf5915e
MS		 1379 p = cupsdFindPrinter(con->uri + 10);
1380 else
6961465f
MS		 1381 {
1382 p = cupsdFindClass(con->uri + 9);
1383
1384 if (p)
1385 {
1386 int i; /* Looping var */
1387
1388 for (i = 0; i < p->num_printers; i ++)
1389 {
1390 if (!(p->printers[i]->type & CUPS_PRINTER_CLASS))
1391 {
1392 char ppdname[1024];/* PPD filename */
1393
1394 snprintf(ppdname, sizeof(ppdname), "%s/ppd/%s.ppd",
1395 ServerRoot, p->printers[i]->name);
1396 if (!access(ppdname, 0))
1397 {
1398 p = p->printers[i];
1399 break;
1400 }
1401 }
1402 }
1403
1404 if (i >= p->num_printers)
1405 p = NULL;
1406 }
1407 }
7cf5915e
MS		 1408
1409 if (p)
1410 snprintf(con->uri, sizeof(con->uri), "/icons/%s.png", p->name);
1411 else
1412 {
1413 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
1414 {
1415 cupsdCloseClient(con);
1416 return;
1417 }
1418
1419 break;
1420 }
1421 }
0268488e 1422 else if (!WebInterface)
229681c1
MS		 1423 {
1424 /*
1425 * Web interface is disabled. Show an appropriate message...
1426 */
1427
1428 if (!cupsdSendError(con, HTTP_WEBIF_DISABLED, CUPSD_AUTH_NONE))
1429 {
1430 cupsdCloseClient(con);
1431 return;
1432 }
1433
1434 break;
1435 }
0268488e
MS		 1436
1437 if ((!strncmp(con->uri, "/admin", 6) &&
1438 strncmp(con->uri, "/admin/conf/", 12) &&
1439 strncmp(con->uri, "/admin/log/", 11)) ||
1440 !strncmp(con->uri, "/printers", 9) ||
1441 !strncmp(con->uri, "/classes", 8) ||
1442 !strncmp(con->uri, "/help", 5) ||
1443 !strncmp(con->uri, "/jobs", 5))
ef416fc2 1444 {
1445 /*
1446 * Send CGI output...
1447 */
1448
1449 if (!strncmp(con->uri, "/admin", 6))
1450 {
1451 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1452 ServerBin);
1453
b423cd4c 1454 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1455 }
1456 else if (!strncmp(con->uri, "/printers", 9))
1457 {
1458 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1459 ServerBin);
b423cd4c 1460
1461 if (con->uri[9] && con->uri[10])
1462 cupsdSetString(&con->options, con->uri + 9);
1463 else
1464 cupsdSetString(&con->options, NULL);
ef416fc2 1465 }
1466 else if (!strncmp(con->uri, "/classes", 8))
1467 {
1468 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1469 ServerBin);
b423cd4c 1470
1471 if (con->uri[8] && con->uri[9])
1472 cupsdSetString(&con->options, con->uri + 8);
1473 else
1474 cupsdSetString(&con->options, NULL);
ef416fc2 1475 }
1476 else if (!strncmp(con->uri, "/jobs", 5))
1477 {
1478 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1479 ServerBin);
b423cd4c 1480
1481 if (con->uri[5] && con->uri[6])
1482 cupsdSetString(&con->options, con->uri + 5);
1483 else
1484 cupsdSetString(&con->options, NULL);
ef416fc2 1485 }
1486 else
1487 {
1488 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1489 ServerBin);
ef416fc2 1490
b423cd4c 1491 if (con->uri[5] && con->uri[6])
1492 cupsdSetString(&con->options, con->uri + 5);
1493 else
1494 cupsdSetString(&con->options, NULL);
1495 }
ef416fc2 1496
1497 if (!cupsdSendCommand(con, con->command, con->options, 0))
1498 {
5bd77a73 1499 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1500 {
1501 cupsdCloseClient(con);
1502 return;
1503 }
ef416fc2 1504 }
1505 else
1506 cupsdLogRequest(con, HTTP_OK);
1507
1508 if (con->http.version <= HTTP_1_0)
1509 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1510 }
1511 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1512 (strchr(con->uri + 12, '/') ||
1513 strlen(con->uri) == 12)) ||
1514 (!strncmp(con->uri, "/admin/log/", 11) &&
1515 (strchr(con->uri + 11, '/') ||
1516 strlen(con->uri) == 11)))
1517 {
1518 /*
bf3816c7 1519 * GET can only be done to configuration files directly under
ef416fc2 1520 * /admin/conf...
1521 */
1522
bf3816c7
MS		 1523 cupsdLogMessage(CUPSD_LOG_ERROR,
1524 "Request for subdirectory \"%s\"!", con->uri);
1525
5bd77a73 1526 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1527 {
1528 cupsdCloseClient(con);
1529 return;
1530 }
ef416fc2 1531
1532 break;
1533 }
1534 else
1535 {
1536 /*
1537 * Serve a file...
1538 */
1539
1540 if ((filename = get_file(con, &filestats, buf,
1541 sizeof(buf))) == NULL)
1542 {
5bd77a73 1543 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1544 {
1545 cupsdCloseClient(con);
1546 return;
1547 }
ef416fc2 1548
1549 break;
1550 }
1551
4400e98d 1552 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1553
e1d6a774 1554 if (is_cgi(con, filename, &filestats, type))
ef416fc2 1555 {
1556 /*
1557 * Note: con->command and con->options were set by
e1d6a774 1558 * is_cgi()...
ef416fc2 1559 */
1560
1561 if (!cupsdSendCommand(con, con->command, con->options, 0))
1562 {
5bd77a73 1563 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1564 {
1565 cupsdCloseClient(con);
1566 return;
1567 }
ef416fc2 1568 }
1569 else
1570 cupsdLogRequest(con, HTTP_OK);
1571
1572 if (con->http.version <= HTTP_1_0)
1573 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1574 break;
1575 }
1576
1577 if (!check_if_modified(con, &filestats))
1578 {
5bd77a73 1579 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1580 {
1581 cupsdCloseClient(con);
1582 return;
1583 }
ef416fc2 1584 }
1585 else
1586 {
1587 if (type == NULL)
5a9febac 1588 strlcpy(line, "text/plain", sizeof(line));
ef416fc2 1589 else
1590 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1591
a74454a7 1592 if (!write_file(con, HTTP_OK, filename, line, &filestats))
f7deaa1a 1593 {
1594 cupsdCloseClient(con);
1595 return;
1596 }
ef416fc2 1597 }
1598 }
1599 break;
1600
cb7f98ee 1601 case HTTP_STATE_POST_RECV :
ef416fc2 1602 /*
1603 * See if the POST request includes a Content-Length field, and if
1604 * so check the length against any limits that are set...
1605 */
1606
ef416fc2 1607 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1608 MaxRequestSize > 0 &&
1609 con->http.data_remaining > MaxRequestSize)
1610 {
1611 /*
1612 * Request too large...
1613 */
1614
5bd77a73 1615 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1616 {
1617 cupsdCloseClient(con);
1618 return;
1619 }
ef416fc2 1620
1621 break;
1622 }
839a51c8
MS		 1623 else if (con->http.data_remaining < 0 ||
1624 (!con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
cb7f98ee 1625 con->http.data_encoding == HTTP_ENCODING_LENGTH))
ef416fc2 1626 {
1627 /*
1628 * Negative content lengths are invalid!
1629 */
1630
5bd77a73 1631 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1632 {
1633 cupsdCloseClient(con);
1634 return;
1635 }
ef416fc2 1636
1637 break;
1638 }
1639
1640 /*
1641 * See what kind of POST request this is; for IPP requests the
1642 * content-type field will be "application/ipp"...
1643 */
1644
1645 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1646 "application/ipp"))
1647 con->request = ippNew();
229681c1
MS		 1648 else if (!WebInterface)
1649 {
1650 /*
1651 * Web interface is disabled. Show an appropriate message...
1652 */
1653
1654 if (!cupsdSendError(con, HTTP_WEBIF_DISABLED, CUPSD_AUTH_NONE))
1655 {
1656 cupsdCloseClient(con);
1657 return;
1658 }
1659
1660 break;
1661 }
ef416fc2 1662 else if ((!strncmp(con->uri, "/admin", 6) &&
1663 strncmp(con->uri, "/admin/conf/", 12) &&
1664 strncmp(con->uri, "/admin/log/", 11)) ||
1665 !strncmp(con->uri, "/printers", 9) ||
1666 !strncmp(con->uri, "/classes", 8) ||
1667 !strncmp(con->uri, "/help", 5) ||
1668 !strncmp(con->uri, "/jobs", 5))
1669 {
1670 /*
1671 * CGI request...
1672 */
1673
1674 if (!strncmp(con->uri, "/admin", 6))
1675 {
1676 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1677 ServerBin);
1678
b423cd4c 1679 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1680 }
1681 else if (!strncmp(con->uri, "/printers", 9))
1682 {
1683 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1684 ServerBin);
b423cd4c 1685
1686 if (con->uri[9] && con->uri[10])
1687 cupsdSetString(&con->options, con->uri + 9);
1688 else
1689 cupsdSetString(&con->options, NULL);
ef416fc2 1690 }
1691 else if (!strncmp(con->uri, "/classes", 8))
1692 {
1693 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1694 ServerBin);
b423cd4c 1695
1696 if (con->uri[8] && con->uri[9])
1697 cupsdSetString(&con->options, con->uri + 8);
1698 else
1699 cupsdSetString(&con->options, NULL);
ef416fc2 1700 }
1701 else if (!strncmp(con->uri, "/jobs", 5))
1702 {
1703 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1704 ServerBin);
b423cd4c 1705
1706 if (con->uri[5] && con->uri[6])
1707 cupsdSetString(&con->options, con->uri + 5);
1708 else
1709 cupsdSetString(&con->options, NULL);
ef416fc2 1710 }
1711 else
1712 {
1713 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1714 ServerBin);
ef416fc2 1715
b423cd4c 1716 if (con->uri[5] && con->uri[6])
1717 cupsdSetString(&con->options, con->uri + 5);
1718 else
1719 cupsdSetString(&con->options, NULL);
1720 }
ef416fc2 1721
ef416fc2 1722 if (con->http.version <= HTTP_1_0)
1723 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1724 }
1725 else
1726 {
1727 /*
1728 * POST to a file...
1729 */
1730
1731 if ((filename = get_file(con, &filestats, buf,
1732 sizeof(buf))) == NULL)
1733 {
5bd77a73 1734 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1735 {
1736 cupsdCloseClient(con);
1737 return;
1738 }
ef416fc2 1739
1740 break;
1741 }
1742
4400e98d 1743 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1744
e1d6a774 1745 if (!is_cgi(con, filename, &filestats, type))
ef416fc2 1746 {
1747 /*
1748 * Only POST to CGI's...
1749 */
1750
5bd77a73 1751 if (!cupsdSendError(con, HTTP_UNAUTHORIZED, CUPSD_AUTH_NONE))
f7deaa1a 1752 {
1753 cupsdCloseClient(con);
1754 return;
1755 }
ef416fc2 1756 }
1757 }
1758 break;
1759
cb7f98ee 1760 case HTTP_STATE_PUT_RECV :
ef416fc2 1761 /*
1762 * Validate the resource name...
1763 */
1764
c41769ff 1765 if (strcmp(con->uri, "/admin/conf/cupsd.conf"))
ef416fc2 1766 {
1767 /*
c41769ff 1768 * PUT can only be done to the cupsd.conf file...
ef416fc2 1769 */
1770
bf3816c7 1771 cupsdLogMessage(CUPSD_LOG_ERROR,
c41769ff 1772 "[Client %d] Disallowed PUT request for \"%s\".",
85dda01c 1773 con->http.fd, con->uri);
bf3816c7 1774
5bd77a73 1775 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1776 {
1777 cupsdCloseClient(con);
1778 return;
1779 }
ef416fc2 1780
1781 break;
1782 }
1783
1784 /*
1785 * See if the PUT request includes a Content-Length field, and if
1786 * so check the length against any limits that are set...
1787 */
1788
ef416fc2 1789 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1790 MaxRequestSize > 0 &&
1791 con->http.data_remaining > MaxRequestSize)
1792 {
1793 /*
1794 * Request too large...
1795 */
1796
5bd77a73 1797 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1798 {
1799 cupsdCloseClient(con);
1800 return;
1801 }
ef416fc2 1802
1803 break;
1804 }
1805 else if (con->http.data_remaining < 0)
1806 {
1807 /*
1808 * Negative content lengths are invalid!
1809 */
1810
5bd77a73 1811 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1812 {
1813 cupsdCloseClient(con);
1814 return;
1815 }
ef416fc2 1816
1817 break;
1818 }
1819
1820 /*
1821 * Open a temporary file to hold the request...
1822 */
1823
1824 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1825 request_id ++);
1826 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1827
ef416fc2 1828 if (con->file < 0)
1829 {
a4924f6c 1830 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1831 "[Client %d] Unable to create request file "
1832 "\"%s\": %s", con->http.fd, con->filename,
1833 strerror(errno));
a4924f6c 1834
5bd77a73 1835 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1836 {
1837 cupsdCloseClient(con);
1838 return;
1839 }
ef416fc2 1840 }
1841
1842 fchmod(con->file, 0640);
1843 fchown(con->file, RunUser, Group);
1844 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1845 break;
1846
cb7f98ee
MS		 1847 case HTTP_STATE_DELETE :
1848 case HTTP_STATE_TRACE :
5bd77a73 1849 cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE);
f7deaa1a 1850 cupsdCloseClient(con);
1851 return;
ef416fc2 1852
cb7f98ee 1853 case HTTP_STATE_HEAD :
ef416fc2 1854 if (!strncmp(con->uri, "/printers/", 10) &&
1855 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1856 {
1857 /*
1858 * Send PPD file - get the real printer name since printer
1859 * names are not case sensitive but filenames can be...
1860 */
1861
1862 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1863
1864 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1865 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1866 else
1867 {
5bd77a73 1868 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1869 {
1870 cupsdCloseClient(con);
1871 return;
1872 }
ef416fc2 1873
1874 break;
1875 }
1876 }
229681c1
MS		 1877 else if (!strncmp(con->uri, "/printers/", 10) &&
1878 !strcmp(con->uri + strlen(con->uri) - 4, ".png"))
1879 {
1880 /*
1881 * Send PNG file - get the real printer name since printer
1882 * names are not case sensitive but filenames can be...
1883 */
1884
1885 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1886
1887 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1888 snprintf(con->uri, sizeof(con->uri), "/icons/%s.png", p->name);
1889 else
1890 {
1891 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
1892 {
1893 cupsdCloseClient(con);
1894 return;
1895 }
1896
1897 break;
1898 }
1899 }
1900 else if (!WebInterface)
1901 {
1902 if (!cupsdSendHeader(con, HTTP_OK, line, CUPSD_AUTH_NONE))
1903 {
1904 cupsdCloseClient(con);
1905 return;
1906 }
1907
1908 if (httpPrintf(HTTP(con), "\r\n") < 0)
1909 {
1910 cupsdCloseClient(con);
1911 return;
1912 }
1913
1914 if (cupsdFlushHeader(con) < 0)
1915 {
1916 cupsdCloseClient(con);
1917 return;
1918 }
1919
a469f8a5
MS		 1920 con->http.state = HTTP_STATE_WAITING;
1921 DEBUG_puts("cupsdReadClient: Set state to HTTP_STATE_WAITING "
1922 "after HEAD.");
229681c1
MS		 1923 break;
1924 }
ef416fc2 1925
1926 if ((!strncmp(con->uri, "/admin", 6) &&
1927 strncmp(con->uri, "/admin/conf/", 12) &&
1928 strncmp(con->uri, "/admin/log/", 11)) ||
1929 !strncmp(con->uri, "/printers", 9) ||
1930 !strncmp(con->uri, "/classes", 8) ||
1931 !strncmp(con->uri, "/help", 5) ||
1932 !strncmp(con->uri, "/jobs", 5))
1933 {
1934 /*
1935 * CGI output...
1936 */
1937
5bd77a73 1938 if (!cupsdSendHeader(con, HTTP_OK, "text/html", CUPSD_AUTH_NONE))
f7deaa1a 1939 {
1940 cupsdCloseClient(con);
1941 return;
1942 }
ef416fc2 1943
1944 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 1945 {
1946 cupsdCloseClient(con);
1947 return;
1948 }
ef416fc2 1949
07725fee 1950 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1951 {
1952 cupsdCloseClient(con);
1953 return;
1954 }
d09495fa 1955
ef416fc2 1956 cupsdLogRequest(con, HTTP_OK);
1957 }
1958 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1959 (strchr(con->uri + 12, '/') ||
1960 strlen(con->uri) == 12)) ||
1961 (!strncmp(con->uri, "/admin/log/", 11) &&
1962 (strchr(con->uri + 11, '/') ||
1963 strlen(con->uri) == 11)))
1964 {
1965 /*
1966 * HEAD can only be done to configuration files under
1967 * /admin/conf...
1968 */
1969
bf3816c7 1970 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1971 "[Client %d] Request for subdirectory \"%s\".",
1972 con->http.fd, con->uri);
bf3816c7 1973
5bd77a73 1974 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1975 {
1976 cupsdCloseClient(con);
1977 return;
1978 }
ef416fc2 1979
1980 break;
1981 }
1982 else if ((filename = get_file(con, &filestats, buf,
1983 sizeof(buf))) == NULL)
1984 {
f11a948a
MS		 1985 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html",
1986 CUPSD_AUTH_NONE))
f7deaa1a 1987 {
1988 cupsdCloseClient(con);
1989 return;
1990 }
ef416fc2 1991
1992 cupsdLogRequest(con, HTTP_NOT_FOUND);
1993 }
1994 else if (!check_if_modified(con, &filestats))
1995 {
5bd77a73 1996 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1997 {
1998 cupsdCloseClient(con);
1999 return;
2000 }
ef416fc2 2001
2002 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
2003 }
2004 else
2005 {
2006 /*
2007 * Serve a file...
2008 */
2009
4400e98d 2010 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 2011 if (type == NULL)
5a9febac 2012 strlcpy(line, "text/plain", sizeof(line));
ef416fc2 2013 else
2014 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
2015
5bd77a73 2016 if (!cupsdSendHeader(con, HTTP_OK, line, CUPSD_AUTH_NONE))
f7deaa1a 2017 {
2018 cupsdCloseClient(con);
2019 return;
2020 }
ef416fc2 2021
2022 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
2023 httpGetDateString(filestats.st_mtime)) < 0)
f7deaa1a 2024 {
2025 cupsdCloseClient(con);
2026 return;
2027 }
ef416fc2 2028
2029 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
2030 (unsigned long)filestats.st_size) < 0)
f7deaa1a 2031 {
2032 cupsdCloseClient(con);
2033 return;
2034 }
ef416fc2 2035
2036 cupsdLogRequest(con, HTTP_OK);
2037 }
2038
2039 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 2040 {
2041 cupsdCloseClient(con);
2042 return;
2043 }
ef416fc2 2044
07725fee 2045 if (cupsdFlushHeader(con) < 0)
f7deaa1a 2046 {
2047 cupsdCloseClient(con);
2048 return;
2049 }
d09495fa 2050
a469f8a5
MS		 2051 con->http.state = HTTP_STATE_WAITING;
2052 DEBUG_puts("cupsdReadClient: Set state to HTTP_STATE_WAITING "
2053 "after HEAD.");
ef416fc2 2054 break;
2055
2056 default :
2057 break; /* Anti-compiler-warning-code */
2058 }
2059 }
2060 }
2061
2062 /*
2063 * Handle any incoming data...
2064 */
2065
2066 switch (con->http.state)
2067 {
cb7f98ee 2068 case HTTP_STATE_PUT_RECV :
f7deaa1a 2069 do
ef416fc2 2070 {
f7deaa1a 2071 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
2072 {
f11a948a
MS		 2073 if (con->http.error && con->http.error != EPIPE)
2074 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2075 "[Client %d] HTTP_STATE_PUT_RECV Closing for error "
f11a948a
MS		 2076 "%d (%s)", con->http.fd, con->http.error,
2077 strerror(con->http.error));
2078 else
2079 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2080 "[Client %d] HTTP_STATE_PUT_RECV Closing on EOF",
f11a948a
MS		 2081 con->http.fd);
2082
f7deaa1a 2083 cupsdCloseClient(con);
2084 return;
2085 }
2086 else if (bytes > 0)
2087 {
2088 con->bytes += bytes;
ef416fc2 2089
f7deaa1a 2090 if (write(con->file, line, bytes) < bytes)
2091 {
2092 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2093 "[Client %d] Unable to write %d bytes to "
2094 "\"%s\": %s", con->http.fd, bytes, con->filename,
2095 strerror(errno));
ef416fc2 2096
f7deaa1a 2097 close(con->file);
2098 con->file = -1;
2099 unlink(con->filename);
2100 cupsdClearString(&con->filename);
ef416fc2 2101
5bd77a73 2102 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2103 {
2104 cupsdCloseClient(con);
2105 return;
2106 }
2107 }
ef416fc2 2108 }
f7deaa1a 2109 }
cb7f98ee 2110 while (con->http.state == HTTP_STATE_PUT_RECV && data_ready(con));
ef416fc2 2111
cb7f98ee 2112 if (con->http.state == HTTP_STATE_STATUS)
ef416fc2 2113 {
2114 /*
2115 * End of file, see how big it is...
2116 */
2117
2118 fstat(con->file, &filestats);
2119
ef416fc2 2120 close(con->file);
2121 con->file = -1;
2122
2123 if (filestats.st_size > MaxRequestSize &&
2124 MaxRequestSize > 0)
2125 {
2126 /*
2127 * Request is too big; remove it and send an error...
2128 */
2129
ef416fc2 2130 unlink(con->filename);
2131 cupsdClearString(&con->filename);
2132
5bd77a73 2133 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2134 {
2135 cupsdCloseClient(con);
2136 return;
2137 }
ef416fc2 2138 }
2139
2140 /*
2141 * Install the configuration file...
2142 */
2143
c41769ff 2144 status = install_cupsd_conf(con);
ef416fc2 2145
2146 /*
2147 * Return the status to the client...
2148 */
2149
5bd77a73 2150 if (!cupsdSendError(con, status, CUPSD_AUTH_NONE))
f7deaa1a 2151 {
2152 cupsdCloseClient(con);
2153 return;
2154 }
ef416fc2 2155 }
2156 break;
2157
cb7f98ee 2158 case HTTP_STATE_POST_RECV :
f7deaa1a 2159 do
ef416fc2 2160 {
f11a948a 2161 if (con->request && con->file < 0)
ef416fc2 2162 {
f7deaa1a 2163 /*
2164 * Grab any request data from the connection...
2165 */
ef416fc2 2166
f7deaa1a 2167 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
ef416fc2 2168 {
f7deaa1a 2169 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2170 "[Client %d] IPP read error: %s", con->http.fd,
2171 cupsLastErrorString());
f7deaa1a 2172
5bd77a73 2173 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 2174 cupsdCloseClient(con);
2175 return;
ef416fc2 2176 }
f7deaa1a 2177 else if (ipp_state != IPP_DATA)
2178 {
cb7f98ee 2179 if (con->http.state == HTTP_STATE_POST_SEND)
f7deaa1a 2180 {
5bd77a73 2181 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 2182 cupsdCloseClient(con);
2183 return;
2184 }
ef416fc2 2185
6961465f
MS		 2186 if (data_ready(con))
2187 continue;
f7deaa1a 2188 break;
2189 }
2190 else
f11a948a 2191 {
85dda01c 2192 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] %d.%d %s %d",
f11a948a
MS		 2193 con->http.fd, con->request->request.op.version[0],
2194 con->request->request.op.version[1],
2195 ippOpString(con->request->request.op.operation_id),
2196 con->request->request.op.request_id);
f7deaa1a 2197 con->bytes += ippLength(con->request);
f11a948a 2198 }
f7deaa1a 2199 }
ef416fc2 2200
cb7f98ee 2201 if (con->file < 0 && con->http.state != HTTP_STATE_POST_SEND)
f7deaa1a 2202 {
2203 /*
2204 * Create a file as needed for the request data...
2205 */
ef416fc2 2206
f11a948a
MS		 2207 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
2208 request_id ++);
f7deaa1a 2209 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
ef416fc2 2210
f7deaa1a 2211 if (con->file < 0)
2212 {
a4924f6c 2213 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2214 "[Client %d] Unable to create request file "
2215 "\"%s\": %s", con->http.fd, con->filename,
2216 strerror(errno));
a4924f6c 2217
5bd77a73 2218 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2219 {
2220 cupsdCloseClient(con);
2221 return;
2222 }
2223 }
ef416fc2 2224
f7deaa1a 2225 fchmod(con->file, 0640);
2226 fchown(con->file, RunUser, Group);
2227 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2228 }
ef416fc2 2229
cb7f98ee 2230 if (con->http.state != HTTP_STATE_POST_SEND)
ef416fc2 2231 {
cb7f98ee
MS		 2232 if (!httpWait(HTTP(con), 0))
2233 return;
2234 else if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
f7deaa1a 2235 {
f11a948a
MS		 2236 if (con->http.error && con->http.error != EPIPE)
2237 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2238 "[Client %d] HTTP_STATE_POST_SEND Closing for "
f11a948a
MS		 2239 "error %d (%s)", con->http.fd, con->http.error,
2240 strerror(con->http.error));
2241 else
2242 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2243 "[Client %d] HTTP_STATE_POST_SEND Closing on EOF",
f11a948a
MS		 2244 con->http.fd);
2245
f7deaa1a 2246 cupsdCloseClient(con);
2247 return;
2248 }
2249 else if (bytes > 0)
2250 {
2251 con->bytes += bytes;
ef416fc2 2252
f7deaa1a 2253 if (write(con->file, line, bytes) < bytes)
2254 {
2255 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2256 "[Client %d] Unable to write %d bytes to "
2257 "\"%s\": %s", con->http.fd, bytes,
2258 con->filename, strerror(errno));
ef416fc2 2259
f7deaa1a 2260 close(con->file);
2261 con->file = -1;
2262 unlink(con->filename);
2263 cupsdClearString(&con->filename);
ef416fc2 2264
f11a948a
MS		 2265 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE,
2266 CUPSD_AUTH_NONE))
f7deaa1a 2267 {
2268 cupsdCloseClient(con);
2269 return;
2270 }
2271 }
2272 }
cb7f98ee 2273 else if (con->http.state == HTTP_STATE_POST_RECV)
f7deaa1a 2274 return;
cb7f98ee 2275 else if (con->http.state != HTTP_STATE_POST_SEND)
f7deaa1a 2276 {
f11a948a 2277 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2278 "[Client %d] Closing on unexpected state %s.",
a469f8a5 2279 con->http.fd, http_states[con->http.state + 1]);
f7deaa1a 2280 cupsdCloseClient(con);
2281 return;
ef416fc2 2282 }
2283 }
f7deaa1a 2284 }
cb7f98ee 2285 while (con->http.state == HTTP_STATE_POST_RECV && data_ready(con));
ef416fc2 2286
cb7f98ee 2287 if (con->http.state == HTTP_STATE_POST_SEND)
ef416fc2 2288 {
2289 if (con->file >= 0)
2290 {
2291 fstat(con->file, &filestats);
2292
ef416fc2 2293 close(con->file);
2294 con->file = -1;
2295
2296 if (filestats.st_size > MaxRequestSize &&
2297 MaxRequestSize > 0)
2298 {
2299 /*
2300 * Request is too big; remove it and send an error...
2301 */
2302
ef416fc2 2303 unlink(con->filename);
2304 cupsdClearString(&con->filename);
2305
2306 if (con->request)
2307 {
2308 /*
2309 * Delete any IPP request data...
2310 */
2311
2312 ippDelete(con->request);
2313 con->request = NULL;
2314 }
2315
5bd77a73 2316 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2317 {
2318 cupsdCloseClient(con);
2319 return;
2320 }
ef416fc2 2321 }
f8b3a85b
MS		 2322 else if (filestats.st_size == 0)
2323 {
2324 /*
2325 * Don't allow empty file...
2326 */
2327
2328 unlink(con->filename);
2329 cupsdClearString(&con->filename);
2330 }
ef416fc2 2331
2332 if (con->command)
2333 {
2334 if (!cupsdSendCommand(con, con->command, con->options, 0))
2335 {
5bd77a73 2336 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 2337 {
2338 cupsdCloseClient(con);
2339 return;
2340 }
ef416fc2 2341 }
2342 else
2343 cupsdLogRequest(con, HTTP_OK);
2344 }
2345 }
2346
2347 if (con->request)
f7deaa1a 2348 {
2349 cupsdProcessIPPRequest(con);
bc44d920 2350
2351 if (con->filename)
2352 {
bc44d920 2353 unlink(con->filename);
2354 cupsdClearString(&con->filename);
2355 }
2356
f7deaa1a 2357 return;
2358 }
ef416fc2 2359 }
2360 break;
2361
2362 default :
2363 break; /* Anti-compiler-warning-code */
2364 }
2365
cb7f98ee 2366 if (con->http.state == HTTP_STATE_WAITING)
3dfe78b3
MS		 2367 {
2368 if (!con->http.keep_alive)
f11a948a
MS		 2369 {
2370 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2371 "[Client %d] Closing because Keep-Alive disabled",
f11a948a 2372 con->http.fd);
3dfe78b3 2373 cupsdCloseClient(con);
f11a948a 2374 }
3dfe78b3
MS		 2375 else
2376 {
2377 cupsArrayRemove(ActiveClients, con);
2378 cupsdSetBusyState();
2379 }
2380 }
ef416fc2 2381}
2382
2383
2384/*
2385 * 'cupsdSendCommand()' - Send output from a command via HTTP.
2386 */
2387
2388int /* O - 1 on success, 0 on failure */
2389cupsdSendCommand(
2390 cupsd_client_t *con, /* I - Client connection */
2391 char *command, /* I - Command to run */
2392 char *options, /* I - Command-line options */
2393 int root) /* I - Run as root? */
2394{
2395 int fd; /* Standard input file descriptor */
2396
2397
2398 if (con->filename)
ed486911 2399 {
ef416fc2 2400 fd = open(con->filename, O_RDONLY);
ef416fc2 2401
ed486911 2402 if (fd < 0)
2403 {
2404 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c 2405 "[Client %d] Unable to open \"%s\" for reading: %s",
ed486911 2406 con->http.fd, con->filename ? con->filename : "/dev/null",
2407 strerror(errno));
2408 return (0);
2409 }
ef416fc2 2410
ed486911 2411 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
2412 }
2413 else
2414 fd = -1;
ef416fc2 2415
2416 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
2417
ed486911 2418 if (fd >= 0)
2419 close(fd);
ef416fc2 2420
85dda01c
MS		 2421 cupsdLogMessage(CUPSD_LOG_INFO, "[Client %d] Started \"%s\" (pid=%d)",
2422 con->http.fd, command, con->pipe_pid);
ef416fc2 2423
85dda01c
MS		 2424 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] file=%d", con->http.fd,
2425 con->file);
ef416fc2 2426
2427 if (con->pipe_pid == 0)
2428 return (0);
2429
2430 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2431
f899b121 2432 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
ef416fc2 2433
2434 con->sent_header = 0;
2435 con->file_ready = 0;
2436 con->got_fields = 0;
68b10830 2437 con->header_used = 0;
ef416fc2 2438
2439 return (1);
2440}
2441
2442
2443/*
2444 * 'cupsdSendError()' - Send an error message via HTTP.
2445 */
2446
2447int /* O - 1 if successful, 0 otherwise */
2448cupsdSendError(cupsd_client_t *con, /* I - Connection */
f899b121 2449 http_status_t code, /* I - Error code */
2450 int auth_type)/* I - Authentication type */
ef416fc2 2451{
b9faaae1 2452 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c 2453 "[Client %d] cupsdSendError code=%d, auth_type=%d",
b9faaae1
MS		 2454 con->http.fd, code, auth_type);
2455
4744bd90 2456#ifdef HAVE_SSL
2457 /*
2458 * Force client to upgrade for authentication if that is how the
2459 * server is configured...
2460 */
2461
2462 if (code == HTTP_UNAUTHORIZED &&
2463 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
88f9aafc 2464 _cups_strcasecmp(con->http.hostname, "localhost") &&
4744bd90 2465 !con->http.tls)
2466 {
4744bd90 2467 code = HTTP_UPGRADE_REQUIRED;
2468 }
2469#endif /* HAVE_SSL */
2470
ef416fc2 2471 /*
2472 * Put the request in the access_log file...
2473 */
2474
2475 cupsdLogRequest(con, code);
2476
ef416fc2 2477 /*
2478 * To work around bugs in some proxies, don't use Keep-Alive for some
2479 * error messages...
f7deaa1a 2480 *
2481 * Kerberos authentication doesn't work without Keep-Alive, so
2482 * never disable it in that case.
ef416fc2 2483 */
2484
5bd77a73 2485 if (code >= HTTP_BAD_REQUEST && con->http.auth_type != CUPSD_AUTH_NEGOTIATE)
ef416fc2 2486 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
2487
2488 /*
2489 * Send an error message back to the client. If the error code is a
2490 * 400 or 500 series, make sure the message contains some text, too!
2491 */
2492
f899b121 2493 if (!cupsdSendHeader(con, code, NULL, auth_type))
ef416fc2 2494 return (0);
2495
2496#ifdef HAVE_SSL
2497 if (code == HTTP_UPGRADE_REQUIRED)
2498 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
2499 return (0);
2500
a469f8a5 2501 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n") < 0)
ef416fc2 2502 return (0);
2503#endif /* HAVE_SSL */
2504
f7deaa1a 2505 if (con->http.version >= HTTP_1_1 &&
2506 con->http.keep_alive == HTTP_KEEPALIVE_OFF)
ef416fc2 2507 {
2508 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
2509 return (0);
2510 }
2511
2512 if (code >= HTTP_BAD_REQUEST)
2513 {
2514 /*
2515 * Send a human-readable error message.
2516 */
2517
80ca4592 2518 char message[4096], /* Message for user */
2519 urltext[1024], /* URL redirection text */
2520 redirect[1024]; /* Redirection link */
ef416fc2 2521 const char *text; /* Status-specific text */
2522
80ca4592 2523
2524 redirect[0] = '\0';
2525
ef416fc2 2526 if (code == HTTP_UNAUTHORIZED)
2527 text = _cupsLangString(con->language,
2528 _("Enter your username and password or the "
2529 "root username and password to access this "
f7deaa1a 2530 "page. If you are using Kerberos authentication, "
2531 "make sure you have a valid Kerberos ticket."));
ef416fc2 2532 else if (code == HTTP_UPGRADE_REQUIRED)
80ca4592 2533 {
2534 text = urltext;
2535
2536 snprintf(urltext, sizeof(urltext),
2537 _cupsLangString(con->language,
2538 _("You must access this page using the URL "
2539 "<A HREF=\"https://%s:%d%s\">"
2540 "https://%s:%d%s</A>.")),
2541 con->servername, con->serverport, con->uri,
2542 con->servername, con->serverport, con->uri);
2543
2544 snprintf(redirect, sizeof(redirect),
b86bc4cf 2545 "<META HTTP-EQUIV=\"Refresh\" "
2546 "CONTENT=\"3;URL=https://%s:%d%s\">\n",
80ca4592 2547 con->servername, con->serverport, con->uri);
2548 }
229681c1
MS		 2549 else if (code == HTTP_WEBIF_DISABLED)
2550 text = _cupsLangString(con->language,
2551 _("The web interface is currently disabled. Run "
2552 "\"cupsctl WebInterface=yes\" to enable it."));
ef416fc2 2553 else
2554 text = "";
2555
2556 snprintf(message, sizeof(message),
745129be
MS		 2557 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" "
2558 "\"http://www.w3.org/TR/html4/loose.dtd\">\n"
ef416fc2 2559 "<HTML>\n"
2560 "<HEAD>\n"
2561 "\t<META HTTP-EQUIV=\"Content-Type\" "
2562 "CONTENT=\"text/html; charset=utf-8\">\n"
229681c1 2563 "\t<TITLE>%s - " CUPS_SVERSION "</TITLE>\n"
ef416fc2 2564 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2565 "HREF=\"/cups.css\">\n"
80ca4592 2566 "%s"
ef416fc2 2567 "</HEAD>\n"
2568 "<BODY>\n"
229681c1 2569 "<H1>%s</H1>\n"
ef416fc2 2570 "<P>%s</P>\n"
2571 "</BODY>\n"
2572 "</HTML>\n",
229681c1 2573 httpStatus(code), redirect, httpStatus(code), text);
ef416fc2 2574
2575 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2576 return (0);
2577 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2578 (int)strlen(message)) < 0)
2579 return (0);
2580 if (httpPrintf(HTTP(con), "\r\n") < 0)
2581 return (0);
2582 if (httpPrintf(HTTP(con), "%s", message) < 0)
2583 return (0);
2584 }
2585 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2586 return (0);
2587
07725fee 2588 if (cupsdFlushHeader(con) < 0)
2589 return (0);
d09495fa 2590
a469f8a5
MS		 2591 con->http.state = HTTP_STATE_WAITING;
2592
2593 DEBUG_puts("cupsdSendError: Set state to HTTP_STATE_WAITING.");
ef416fc2 2594
2595 return (1);
2596}
2597
2598
ef416fc2 2599/*
2600 * 'cupsdSendHeader()' - Send an HTTP request.
2601 */
2602
2603int /* O - 1 on success, 0 on failure */
f899b121 2604cupsdSendHeader(
2605 cupsd_client_t *con, /* I - Client to send to */
2606 http_status_t code, /* I - HTTP status code */
2607 char *type, /* I - MIME type of document */
2608 int auth_type) /* I - Type of authentication */
ef416fc2 2609{
5a738aea 2610 char auth_str[1024]; /* Authorization string */
f7deaa1a 2611
2612
4744bd90 2613 /*
2614 * Send the HTTP status header...
2615 */
2616
b423cd4c 2617 if (code == HTTP_CONTINUE)
2618 {
4744bd90 2619 /*
2620 * 100-continue doesn't send any headers...
2621 */
2622
07725fee 2623 return (httpPrintf(HTTP(con), "HTTP/%d.%d 100 Continue\r\n\r\n",
2624 con->http.version / 100, con->http.version % 100) > 0);
b423cd4c 2625 }
229681c1
MS		 2626 else if (code == HTTP_WEBIF_DISABLED)
2627 {
2628 /*
2629 * Treat our special "web interface is disabled" status as "200 OK" for web
2630 * browsers.
2631 */
2632
2633 code = HTTP_OK;
2634 }
b423cd4c 2635
07725fee 2636 httpFlushWrite(HTTP(con));
2637
cb7f98ee 2638 con->http.data_encoding = HTTP_ENCODING_FIELDS;
07725fee 2639
2640 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2641 con->http.version % 100, code, httpStatus(code)) < 0)
2642 return (0);
ef416fc2 2643 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2644 return (0);
2645 if (ServerHeader)
2646 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2647 return (0);
2648 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2649 {
2650 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2651 return (0);
2652 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2653 KeepAliveTimeout) < 0)
2654 return (0);
2655 }
2656 if (code == HTTP_METHOD_NOT_ALLOWED)
e6013cfa 2657 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n") < 0)
ef416fc2 2658 return (0);
2659
2660 if (code == HTTP_UNAUTHORIZED)
2661 {
5bd77a73 2662 if (auth_type == CUPSD_AUTH_NONE)
f899b121 2663 {
5bd77a73 2664 if (!con->best || con->best->type <= CUPSD_AUTH_NONE)
dcb445bc 2665 auth_type = cupsdDefaultAuthType();
f899b121 2666 else
2667 auth_type = con->best->type;
2668 }
f7deaa1a 2669
2670 auth_str[0] = '\0';
2671
5bd77a73 2672 if (auth_type == CUPSD_AUTH_BASIC || auth_type == CUPSD_AUTH_BASICDIGEST)
f7deaa1a 2673 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
5bd77a73 2674 else if (auth_type == CUPSD_AUTH_DIGEST)
f7deaa1a 2675 snprintf(auth_str, sizeof(auth_str), "Digest realm=\"CUPS\", nonce=\"%s\"",
2676 con->http.hostname);
2677#ifdef HAVE_GSSAPI
eac3a0a0 2678 else if (auth_type == CUPSD_AUTH_NEGOTIATE)
6961465f
MS		 2679 {
2680# ifdef AF_LOCAL
2681 if (_httpAddrFamily(con->http.hostaddr) == AF_LOCAL)
2682 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
2683 else
2684# endif /* AF_LOCAL */
f7deaa1a 2685 strlcpy(auth_str, "Negotiate", sizeof(auth_str));
6961465f 2686 }
f7deaa1a 2687#endif /* HAVE_GSSAPI */
2688
e07d4801 2689 if (con->best && auth_type != CUPSD_AUTH_NEGOTIATE &&
88f9aafc 2690 !_cups_strcasecmp(con->http.hostname, "localhost"))
ef416fc2 2691 {
e07d4801
MS		 2692 /*
2693 * Add a "trc" (try root certification) parameter for local non-Kerberos
2694 * requests when the request requires system group membership - then the
2695 * client knows the root certificate can/should be used.
2696 *
f3c17241 2697 * Also, for OS X we also look for @AUTHKEY and add an "authkey"
e07d4801
MS		 2698 * parameter as needed...
2699 */
2700
10d09e33
MS		 2701 char *name, /* Current user name */
2702 *auth_key; /* Auth key buffer */
f7deaa1a 2703 size_t auth_size; /* Size of remaining buffer */
2704
f7deaa1a 2705 auth_key = auth_str + strlen(auth_str);
2706 auth_size = sizeof(auth_str) - (auth_key - auth_str);
2707
10d09e33
MS		 2708 for (name = (char *)cupsArrayFirst(con->best->names);
2709 name;
2710 name = (char *)cupsArrayNext(con->best->names))
f7deaa1a 2711 {
e07d4801 2712#ifdef HAVE_AUTHORIZATION_H
88f9aafc 2713 if (!_cups_strncasecmp(name, "@AUTHKEY(", 9))
f7deaa1a 2714 {
10d09e33 2715 snprintf(auth_key, auth_size, ", authkey=\"%s\"", name + 9);
f7deaa1a 2716 /* end parenthesis is stripped in conf.c */
2717 break;
2718 }
e07d4801
MS		 2719 else
2720#endif /* HAVE_AUTHORIZATION_H */
88f9aafc 2721 if (!_cups_strcasecmp(name, "@SYSTEM"))
f7deaa1a 2722 {
e07d4801
MS		 2723#ifdef HAVE_AUTHORIZATION_H
2724 if (SystemGroupAuthKey)
2725 snprintf(auth_key, auth_size,
07ed0e9a 2726 ", authkey=\"%s\"",
e07d4801
MS		 2727 SystemGroupAuthKey);
2728 else
2729#else
f11a948a 2730 strlcpy(auth_key, ", trc=\"y\"", auth_size);
e07d4801 2731#endif /* HAVE_AUTHORIZATION_H */
f7deaa1a 2732 break;
2733 }
2734 }
ef416fc2 2735 }
f7deaa1a 2736
bc44d920 2737 if (auth_str[0])
2738 {
68b10830 2739 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2740 "[Client %d] WWW-Authenticate: %s", con->http.fd,
bc44d920 2741 auth_str);
2742
2743 if (httpPrintf(HTTP(con), "WWW-Authenticate: %s\r\n", auth_str) < 0)
2744 return (0);
2745 }
ef416fc2 2746 }
2747
e1d6a774 2748 if (con->language && strcmp(con->language->language, "C"))
ef416fc2 2749 {
2750 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2751 con->language->language) < 0)
2752 return (0);
2753 }
2754
e1d6a774 2755 if (type)
ef416fc2 2756 {
2757 if (!strcmp(type, "text/html"))
2758 {
2759 if (httpPrintf(HTTP(con),
2760 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2761 return (0);
2762 }
2763 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2764 return (0);
2765 }
2766
2767 return (1);
2768}
2769
2770
2771/*
2772 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2773 */
2774
2775void
2776cupsdUpdateCGI(void)
2777{
2778 char *ptr, /* Pointer to end of line in buffer */
2779 message[1024]; /* Pointer to message text */
2780 int loglevel; /* Log level for message */
2781
2782
2783 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2784 message, sizeof(message))) != NULL)
f0ab5bff
MS		 2785 {
2786 if (loglevel == CUPSD_LOG_INFO)
2787 cupsdLogMessage(CUPSD_LOG_INFO, "%s", message);
2788
ef416fc2 2789 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2790 break;
f0ab5bff 2791 }
ef416fc2 2792
d09495fa 2793 if (ptr == NULL && !CGIStatusBuffer->bufused)
ef416fc2 2794 {
2795 /*
2796 * Fatal error on pipe - should never happen!
2797 */
2798
2799 cupsdLogMessage(CUPSD_LOG_CRIT,
2800 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2801 strerror(errno));
2802 }
2803}
2804
2805
2806/*
2807 * 'cupsdWriteClient()' - Write data to a client as needed.
2808 */
2809
f7deaa1a 2810void
ef416fc2 2811cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2812{
68b10830
MS		 2813 int bytes, /* Number of bytes written */
2814 field_col; /* Current column */
2815 char *bufptr, /* Pointer into buffer */
2816 *bufend; /* Pointer to end of buffer */
ef416fc2 2817 ipp_state_t ipp_state; /* IPP state value */
2818
2819
f2d18633 2820 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c
MS		 2821 "[Client %d] cupsdWriteClient "
2822 "error=%d, "
2823 "used=%d, "
2824 "state=%s, "
cb7f98ee 2825 "data_encoding=HTTP_ENCODING_%s, "
85dda01c
MS		 2826 "data_remaining=" CUPS_LLFMT ", "
2827 "response=%p(%s), "
2828 "pipe_pid=%d, "
2829 "file=%d",
2830 con->http.fd, con->http.error, con->http.used,
a469f8a5 2831 http_states[con->http.state + 1],
cb7f98ee 2832 con->http.data_encoding == HTTP_ENCODING_CHUNKED ?
85dda01c
MS		 2833 "CHUNKED" : "LENGTH",
2834 CUPS_LLCAST con->http.data_remaining,
2835 con->response,
2836 con->response ? ipp_states[con->response->state] : "",
2837 con->pipe_pid, con->file);
ef416fc2 2838
cb7f98ee
MS		 2839 if (con->http.state != HTTP_STATE_GET_SEND &&
2840 con->http.state != HTTP_STATE_POST_SEND)
8b116e60
MS		 2841 {
2842 /*
2843 * If we get called in the wrong state, then something went wrong with the
2844 * connection and we need to shut it down...
2845 */
2846
f11a948a 2847 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2848 "[Client %d] Closing on unexpected HTTP state %s.",
a469f8a5 2849 con->http.fd, http_states[con->http.state + 1]);
8b116e60 2850 cupsdCloseClient(con);
f7deaa1a 2851 return;
8b116e60 2852 }
f7deaa1a 2853
2854 if (con->pipe_pid)
2855 {
2856 /*
2857 * Make sure we select on the CGI output...
2858 */
2859
f899b121 2860 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
f7deaa1a 2861
2862 if (!con->file_ready)
2863 {
2864 /*
2865 * Try again later when there is CGI output available...
2866 */
2867
2868 cupsdRemoveSelect(con->http.fd);
2869 return;
2870 }
2871
2872 con->file_ready = 0;
2873 }
ef416fc2 2874
b94498cf 2875 if (con->response && con->response->state != IPP_DATA)
ef416fc2 2876 {
94436c5a
MS		 2877 int wused = con->http.wused; /* Previous write buffer use */
2878
2879 do
2880 {
2881 /*
2882 * Write a single attribute or the IPP message header...
2883 */
2884
21f36711 2885 ipp_state = ippWrite(HTTP(con), con->response);
94436c5a
MS		 2886
2887 /*
2888 * If the write buffer has been flushed, stop buffering up attributes...
2889 */
2890
2891 if (con->http.wused <= wused)
2892 break;
2893 }
2894 while (ipp_state != IPP_STATE_DATA && ipp_state != IPP_STATE_ERROR);
2895
f2d18633 2896 cupsdLogMessage(CUPSD_LOG_DEBUG,
21f36711
MS		 2897 "[Client %d] Writing IPP response, ipp_state=%s, old "
2898 "wused=%d, new wused=%d", con->http.fd,
2899 ipp_state == IPP_STATE_ERROR ? "ERROR" :
2900 ipp_state == IPP_STATE_IDLE ? "IDLE" :
2901 ipp_state == IPP_STATE_HEADER ? "HEADER" :
2902 ipp_state == IPP_STATE_ATTRIBUTE ? "ATTRIBUTE" : "DATA",
2903 wused, con->http.wused);
f2d18633 2904
94436c5a
MS		 2905 if (con->http.wused > 0)
2906 httpFlushWrite(HTTP(con));
2907
2908 bytes = ipp_state != IPP_STATE_ERROR &&
2909 (con->file >= 0 || ipp_state != IPP_STATE_DATA);
21f36711
MS		 2910
2911 cupsdLogMessage(CUPSD_LOG_DEBUG,
2912 "[Client %d] bytes=%d, http_state=%d, "
2913 "data_remaining=" CUPS_LLFMT,
2914 con->http.fd, (int)bytes, con->http.state,
2915 CUPS_LLCAST con->http.data_remaining);
ef416fc2 2916 }
a2326b5b 2917 else if ((bytes = read(con->file, con->header + con->header_used,
68b10830 2918 sizeof(con->header) - con->header_used)) > 0)
ef416fc2 2919 {
68b10830
MS		 2920 con->header_used += bytes;
2921
ef416fc2 2922 if (con->pipe_pid && !con->got_fields)
2923 {
2924 /*
2925 * Inspect the data for Content-Type and other fields.
2926 */
2927
68b10830
MS		 2928 for (bufptr = con->header, bufend = con->header + con->header_used,
2929 field_col = 0;
2930 !con->got_fields && bufptr < bufend;
2931 bufptr ++)
d1c13e16 2932 {
ef416fc2 2933 if (*bufptr == '\n')
2934 {
2935 /*
2936 * Send line to client...
2937 */
2938
68b10830 2939 if (bufptr > con->header && bufptr[-1] == '\r')
ef416fc2 2940 bufptr[-1] = '\0';
2941 *bufptr++ = '\0';
2942
68b10830 2943 cupsdLogMessage(CUPSD_LOG_DEBUG, "Script header: %s", con->header);
ef416fc2 2944
2945 if (!con->sent_header)
2946 {
2947 /*
2948 * Handle redirection and CGI status codes...
2949 */
2950
88f9aafc 2951 if (!_cups_strncasecmp(con->header, "Location:", 9))
d6ae789d 2952 {
321d8d57
MS		 2953 if (!cupsdSendHeader(con, HTTP_SEE_OTHER, NULL, CUPSD_AUTH_NONE))
2954 {
2955 cupsdCloseClient(con);
2956 return;
2957 }
2958
07725fee 2959 con->sent_header = 2;
2960
d6ae789d 2961 if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
f7deaa1a 2962 return;
d6ae789d 2963 }
88f9aafc 2964 else if (!_cups_strncasecmp(con->header, "Status:", 7))
07725fee 2965 {
68b10830
MS		 2966 cupsdSendError(con, (http_status_t)atoi(con->header + 7),
2967 CUPSD_AUTH_NONE);
07725fee 2968 con->sent_header = 2;
2969 }
ef416fc2 2970 else
4744bd90 2971 {
321d8d57
MS		 2972 if (!cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE))
2973 {
2974 cupsdCloseClient(con);
2975 return;
2976 }
2977
07725fee 2978 con->sent_header = 1;
ef416fc2 2979
4744bd90 2980 if (con->http.version == HTTP_1_1)
2981 {
4744bd90 2982 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
f7deaa1a 2983 return;
4744bd90 2984 }
2985 }
ef416fc2 2986 }
2987
88f9aafc 2988 if (_cups_strncasecmp(con->header, "Status:", 7))
68b10830 2989 httpPrintf(HTTP(con), "%s\r\n", con->header);
ef416fc2 2990
ef416fc2 2991 /*
2992 * Update buffer...
2993 */
2994
68b10830 2995 con->header_used -= bufptr - con->header;
d1c13e16 2996
68b10830
MS		 2997 if (con->header_used > 0)
2998 memmove(con->header, bufptr, con->header_used);
d1c13e16 2999
68b10830 3000 bufptr = con->header - 1;
ef416fc2 3001
3002 /*
3003 * See if the line was empty...
3004 */
3005
68b10830 3006 if (field_col == 0)
d09495fa 3007 {
ef416fc2 3008 con->got_fields = 1;
d09495fa 3009
07725fee 3010 if (cupsdFlushHeader(con) < 0)
3011 {
3012 cupsdCloseClient(con);
f7deaa1a 3013 return;
07725fee 3014 }
d09495fa 3015
3016 if (con->http.version == HTTP_1_1)
cb7f98ee 3017 con->http.data_encoding = HTTP_ENCODING_CHUNKED;
d09495fa 3018 }
ef416fc2 3019 else
68b10830 3020 field_col = 0;
ef416fc2 3021 }
3022 else if (*bufptr != '\r')
68b10830 3023 field_col ++;
d1c13e16 3024 }
ef416fc2 3025
68b10830 3026 if (!con->got_fields)
47879b8b 3027 {
ef416fc2 3028 con->http.activity = time(NULL);
47879b8b
MS		 3029 return;
3030 }
ef416fc2 3031 }
3032
68b10830 3033 if (con->header_used > 0)
ef416fc2 3034 {
68b10830 3035 if (httpWrite2(HTTP(con), con->header, con->header_used) < 0)
4744bd90 3036 {
f11a948a 3037 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 3038 "[Client %d] Closing for error %d (%s)",
f11a948a
MS		 3039 con->http.fd, con->http.error,
3040 strerror(con->http.error));
4744bd90 3041 cupsdCloseClient(con);
f7deaa1a 3042 return;
4744bd90 3043 }
ef416fc2 3044
cb7f98ee 3045 if (con->http.data_encoding == HTTP_ENCODING_CHUNKED)
01ce6322 3046 httpFlushWrite(HTTP(con));
ae71f5de 3047
68b10830 3048 con->bytes += con->header_used;
ef416fc2 3049
cb7f98ee 3050 if (con->http.state == HTTP_STATE_WAITING)
4744bd90 3051 bytes = 0;
68b10830
MS		 3052 else
3053 bytes = con->header_used;
3054
3055 con->header_used = 0;
4744bd90 3056 }
ef416fc2 3057 }
3058
8b116e60 3059 if (bytes <= 0 ||
21f36711
MS		 3060 (con->http.state != HTTP_STATE_GET_SEND &&
3061 con->http.state != HTTP_STATE_POST_SEND))
ef416fc2 3062 {
38e73f87 3063 if (!con->sent_header && con->pipe_pid)
94da7e34
MS		 3064 cupsdSendError(con, HTTP_SERVER_ERROR, CUPSD_AUTH_NONE);
3065 else
3066 {
3067 cupsdLogRequest(con, HTTP_OK);
ef416fc2 3068
94da7e34 3069 httpFlushWrite(HTTP(con));
ef416fc2 3070
21f36711
MS		 3071 if (con->http.data_encoding == HTTP_ENCODING_CHUNKED &&
3072 con->sent_header == 1)
ef416fc2 3073 {
94da7e34
MS		 3074 if (httpWrite2(HTTP(con), "", 0) < 0)
3075 {
f11a948a 3076 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 3077 "[Client %d] Closing for error %d (%s)",
f11a948a
MS		 3078 con->http.fd, con->http.error,
3079 strerror(con->http.error));
94da7e34
MS		 3080 cupsdCloseClient(con);
3081 return;
3082 }
ef416fc2 3083 }
3084 }
3085
cb7f98ee 3086 con->http.state = HTTP_STATE_WAITING;
ef416fc2 3087
f7deaa1a 3088 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 3089
3090 if (con->file >= 0)
3091 {
f7deaa1a 3092 cupsdRemoveSelect(con->file);
ef416fc2 3093
3094 if (con->pipe_pid)
3095 cupsdEndProcess(con->pipe_pid, 0);
3096
ef416fc2 3097 close(con->file);
3098 con->file = -1;
3099 con->pipe_pid = 0;
3100 }
3101
3102 if (con->filename)
3103 {
ef416fc2 3104 unlink(con->filename);
3105 cupsdClearString(&con->filename);
3106 }
3107
2abf387c 3108 if (con->request)
ef416fc2 3109 {
3110 ippDelete(con->request);
3111 con->request = NULL;
3112 }
3113
2abf387c 3114 if (con->response)
ef416fc2 3115 {
3116 ippDelete(con->response);
3117 con->response = NULL;
3118 }
3119
3120 cupsdClearString(&con->command);
3121 cupsdClearString(&con->options);
b86bc4cf 3122 cupsdClearString(&con->query_string);
ef416fc2 3123
3124 if (!con->http.keep_alive)
3125 {
f11a948a 3126 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 3127 "[Client %d] Closing because Keep-Alive disabled.",
f11a948a 3128 con->http.fd);
ef416fc2 3129 cupsdCloseClient(con);
f7deaa1a 3130 return;
ef416fc2 3131 }
f11a948a
MS		 3132 else
3133 {
3134 cupsArrayRemove(ActiveClients, con);
3135 cupsdSetBusyState();
3136 }
ef416fc2 3137 }
3138
3139 con->http.activity = time(NULL);
f7deaa1a 3140}
ef416fc2 3141
f7deaa1a 3142
e1d6a774 3143/*
3144 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
3145 */
3146
3147static int /* O - 1 if modified since */
3148check_if_modified(
3149 cupsd_client_t *con, /* I - Client connection */
3150 struct stat *filestats) /* I - File information */
3151{
3152 char *ptr; /* Pointer into field */
3153 time_t date; /* Time/date value */
3154 off_t size; /* Size/length value */
3155
3156
3157 size = 0;
3158 date = 0;
3159 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
3160
3161 if (*ptr == '\0')
3162 return (1);
3163
3164 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c 3165 "[Client %d] check_if_modified "
b9faaae1 3166 "filestats=%p(" CUPS_LLFMT ", %d)) If-Modified-Since=\"%s\"",
85dda01c 3167 con->http.fd, filestats, CUPS_LLCAST filestats->st_size,
b9faaae1 3168 (int)filestats->st_mtime, ptr);
e1d6a774 3169
3170 while (*ptr != '\0')
3171 {
3172 while (isspace(*ptr) || *ptr == ';')
3173 ptr ++;
3174
88f9aafc 3175 if (_cups_strncasecmp(ptr, "length=", 7) == 0)
e1d6a774 3176 {
3177 ptr += 7;
3178 size = strtoll(ptr, NULL, 10);
3179
3180 while (isdigit(*ptr))
3181 ptr ++;
3182 }
3183 else if (isalpha(*ptr))
3184 {
3185 date = httpGetDateTime(ptr);
3186 while (*ptr != '\0' && *ptr != ';')
3187 ptr ++;
3188 }
e53920b9 3189 else
3190 ptr ++;
e1d6a774 3191 }
3192
e1d6a774 3193 return ((size != filestats->st_size && size != 0) ||
3194 (date < filestats->st_mtime && date != 0) ||
3195 (size == 0 && date == 0));
3196}
3197
3198
3dfe78b3
MS		 3199/*
3200 * 'compare_clients()' - Compare two client connections.
3201 */
3202
3203static int /* O - Result of comparison */
3204compare_clients(cupsd_client_t *a, /* I - First client */
3205 cupsd_client_t *b, /* I - Second client */
3206 void *data) /* I - User data (not used) */
3207{
3208 (void)data;
3209
3210 if (a == b)
3211 return (0);
3212 else if (a < b)
3213 return (-1);
3214 else
3215 return (1);
3216}
3217
3218
85dda01c
MS		 3219/*
3220 * 'data_ready()' - Check whether data is available from a client.
3221 */
ef416fc2 3222
85dda01c
MS		 3223static int /* O - 1 if data is ready, 0 otherwise */
3224data_ready(cupsd_client_t *con) /* I - Client */
3225{
3226 if (con->http.used > 0)
3227 return (1);
3228#ifdef HAVE_SSL
3229 else if (con->http.tls)
e1d6a774 3230 {
85dda01c
MS		 3231# ifdef HAVE_LIBSSL
3232 if (SSL_pending((SSL *)(con->http.tls)))
3233 return (1);
3234# elif defined(HAVE_GNUTLS)
3235 if (gnutls_record_check_pending(con->http.tls))
3236 return (1);
3237# elif defined(HAVE_CDSASSL)
3238 size_t bytes; /* Bytes that are available */
ef416fc2 3239
85dda01c
MS		 3240 if (!SSLGetBufferedReadSize(con->http.tls, &bytes) && bytes > 0)
3241 return (1);
3242# endif /* HAVE_LIBSSL */
e1d6a774 3243 }
85dda01c 3244#endif /* HAVE_SSL */
ef416fc2 3245
85dda01c
MS		 3246 return (0);
3247}
ef416fc2 3248
ef416fc2 3249
ef416fc2 3250/*
3251 * 'get_file()' - Get a filename and state info.
3252 */
3253
3254static char * /* O - Real filename */
3255get_file(cupsd_client_t *con, /* I - Client connection */
3256 struct stat *filestats, /* O - File information */
3257 char *filename, /* IO - Filename buffer */
3258 int len) /* I - Buffer length */
3259{
3260 int status; /* Status of filesystem calls */
3261 char *ptr; /* Pointer info filename */
3262 int plen; /* Remaining length after pointer */
db1f069b 3263 char language[7]; /* Language subdirectory, if any */
ef416fc2 3264
3265
3266 /*
f7deaa1a 3267 * Figure out the real filename...
ef416fc2 3268 */
3269
db1f069b
MS		 3270 language[0] = '\0';
3271
7cf5915e 3272 if (!strncmp(con->uri, "/ppd/", 5) && !strchr(con->uri + 5, '/'))
ef416fc2 3273 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
7cf5915e
MS		 3274 else if (!strncmp(con->uri, "/icons/", 7) && !strchr(con->uri + 7, '/'))
3275 {
3276 snprintf(filename, len, "%s/%s", CacheDir, con->uri + 7);
3277 if (access(filename, F_OK) < 0)
3278 snprintf(filename, len, "%s/images/generic.png", DocumentRoot);
3279 }
f7deaa1a 3280 else if (!strncmp(con->uri, "/rss/", 5) && !strchr(con->uri + 5, '/'))
3281 snprintf(filename, len, "%s/rss/%s", CacheDir, con->uri + 5);
ef416fc2 3282 else if (!strncmp(con->uri, "/admin/conf/", 12))
3283 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
3284 else if (!strncmp(con->uri, "/admin/log/", 11))
3285 {
2e4ff8af 3286 if (!strncmp(con->uri + 11, "access_log", 10) && AccessLog[0] == '/')
ef416fc2 3287 strlcpy(filename, AccessLog, len);
2e4ff8af 3288 else if (!strncmp(con->uri + 11, "error_log", 9) && ErrorLog[0] == '/')
ef416fc2 3289 strlcpy(filename, ErrorLog, len);
2e4ff8af 3290 else if (!strncmp(con->uri + 11, "page_log", 8) && PageLog[0] == '/')
ef416fc2 3291 strlcpy(filename, PageLog, len);
3292 else
3293 return (NULL);
3294 }
d6ae789d 3295 else if (con->language)
db1f069b
MS		 3296 {
3297 snprintf(language, sizeof(language), "/%s", con->language->language);
3298 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
3299 }
ef416fc2 3300 else
3301 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3302
3303 if ((ptr = strchr(filename, '?')) != NULL)
3304 *ptr = '\0';
3305
3306 /*
3307 * Grab the status for this language; if there isn't a language-specific file
3308 * then fallback to the default one...
3309 */
3310
db1f069b 3311 if ((status = stat(filename, filestats)) != 0 && language[0] &&
7cf5915e 3312 strncmp(con->uri, "/icons/", 7) &&
d6ae789d 3313 strncmp(con->uri, "/ppd/", 5) &&
7cf5915e 3314 strncmp(con->uri, "/rss/", 5) &&
d6ae789d 3315 strncmp(con->uri, "/admin/conf/", 12) &&
3316 strncmp(con->uri, "/admin/log/", 11))
ef416fc2 3317 {
3318 /*
d6ae789d 3319 * Drop the country code...
ef416fc2 3320 */
3321
db1f069b
MS		 3322 language[3] = '\0';
3323 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
d6ae789d 3324
3325 if ((ptr = strchr(filename, '?')) != NULL)
3326 *ptr = '\0';
3327
3328 if ((status = stat(filename, filestats)) != 0)
ef416fc2 3329 {
d6ae789d 3330 /*
3331 * Drop the language prefix and try the root directory...
3332 */
3333
db1f069b 3334 language[0] = '\0';
ef416fc2 3335 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3336
3337 if ((ptr = strchr(filename, '?')) != NULL)
3338 *ptr = '\0';
3339
3340 status = stat(filename, filestats);
3341 }
3342 }
3343
3344 /*
3345 * If we're found a directory, get the index.html file instead...
3346 */
3347
3348 if (!status && S_ISDIR(filestats->st_mode))
3349 {
db1f069b
MS		 3350 /*
3351 * Make sure the URI ends with a slash...
3352 */
ef416fc2 3353
db1f069b
MS		 3354 if (con->uri[strlen(con->uri) - 1] != '/')
3355 strlcat(con->uri, "/", sizeof(con->uri));
ef416fc2 3356
db1f069b
MS		 3357 /*
3358 * Find the directory index file, trying every language...
3359 */
ef416fc2 3360
db1f069b 3361 do
ef416fc2 3362 {
db1f069b
MS		 3363 if (status && language[0])
3364 {
3365 /*
3366 * Try a different language subset...
3367 */
3368
3369 if (language[3])
3370 language[0] = '\0'; /* Strip country code */
3371 else
3372 language[0] = '\0'; /* Strip language */
3373 }
3374
3375 /*
3376 * Look for the index file...
3377 */
3378
3379 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
3380
3381 if ((ptr = strchr(filename, '?')) != NULL)
3382 *ptr = '\0';
3383
3384 ptr = filename + strlen(filename);
3385 plen = len - (ptr - filename);
3386
3387 strlcpy(ptr, "index.html", plen);
ef416fc2 3388 status = stat(filename, filestats);
db1f069b
MS		 3389
3390#ifdef HAVE_JAVA
3391 if (status)
3392 {
3393 strlcpy(ptr, "index.class", plen);
3394 status = stat(filename, filestats);
3395 }
ef416fc2 3396#endif /* HAVE_JAVA */
3397
3398#ifdef HAVE_PERL
db1f069b
MS		 3399 if (status)
3400 {
3401 strlcpy(ptr, "index.pl", plen);
3402 status = stat(filename, filestats);
3403 }
ef416fc2 3404#endif /* HAVE_PERL */
3405
3406#ifdef HAVE_PHP
db1f069b
MS		 3407 if (status)
3408 {
3409 strlcpy(ptr, "index.php", plen);
3410 status = stat(filename, filestats);
3411 }
ef416fc2 3412#endif /* HAVE_PHP */
3413
3414#ifdef HAVE_PYTHON
db1f069b
MS		 3415 if (status)
3416 {
3417 strlcpy(ptr, "index.pyc", plen);
3418 status = stat(filename, filestats);
3419 }
ef416fc2 3420
db1f069b
MS		 3421 if (status)
3422 {
3423 strlcpy(ptr, "index.py", plen);
3424 status = stat(filename, filestats);
3425 }
ef416fc2 3426#endif /* HAVE_PYTHON */
db1f069b
MS		 3427
3428 }
3429 while (status && language[0]);
ef416fc2 3430 }
3431
b9faaae1 3432 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3433 "[Client %d] get_file filestats=%p, filename=%p, len=%d, "
3434 "returning \"%s\".", con->http.fd, filestats, filename, len,
b9faaae1 3435 status ? "(null)" : filename);
ef416fc2 3436
ef416fc2 3437 if (status)
3438 return (NULL);
3439 else
3440 return (filename);
3441}
3442
3443
3444/*
c41769ff 3445 * 'install_cupsd_conf()' - Install a configuration file.
ef416fc2 3446 */
3447
3448static http_status_t /* O - Status */
c41769ff 3449install_cupsd_conf(cupsd_client_t *con) /* I - Connection */
ef416fc2 3450{
321d8d57 3451 char filename[1024]; /* Configuration filename */
ef416fc2 3452 cups_file_t *in, /* Input file */
3453 *out; /* Output file */
321d8d57
MS		 3454 char buffer[16384]; /* Copy buffer */
3455 ssize_t bytes; /* Number of bytes */
ef416fc2 3456
3457
3458 /*
321d8d57 3459 * Open the request file...
ef416fc2 3460 */
3461
321d8d57 3462 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
ef416fc2 3463 {
321d8d57
MS		 3464 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\": %s",
3465 con->filename, strerror(errno));
3466 return (HTTP_SERVER_ERROR);
ef416fc2 3467 }
3468
3469 /*
321d8d57 3470 * Open the new config file...
ef416fc2 3471 */
3472
cb7f98ee 3473 if ((out = cupsdCreateConfFile(ConfigurationFile, ConfigFilePerm)) == NULL)
ef416fc2 3474 {
3475 cupsFileClose(in);
ef416fc2 3476 return (HTTP_SERVER_ERROR);
3477 }
3478
cb7f98ee
MS		 3479 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...",
3480 ConfigurationFile);
ef416fc2 3481
3482 /*
3483 * Copy from the request to the new config file...
3484 */
3485
3486 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
3487 if (cupsFileWrite(out, buffer, bytes) < bytes)
3488 {
3489 cupsdLogMessage(CUPSD_LOG_ERROR,
321d8d57 3490 "Unable to copy to config file \"%s\": %s",
cb7f98ee 3491 ConfigurationFile, strerror(errno));
ef416fc2 3492
3493 cupsFileClose(in);
3494 cupsFileClose(out);
321d8d57 3495
cb7f98ee
MS		 3496 snprintf(filename, sizeof(filename), "%s.N", ConfigurationFile);
3497 cupsdUnlinkOrRemoveFile(filename);
ef416fc2 3498
3499 return (HTTP_SERVER_ERROR);
3500 }
3501
3502 /*
3503 * Close the files...
3504 */
3505
3506 cupsFileClose(in);
ef416fc2 3507
cb7f98ee 3508 if (cupsdCloseCreatedConfFile(out, ConfigurationFile))
ef416fc2 3509 return (HTTP_SERVER_ERROR);
ef416fc2 3510
3511 /*
3512 * Remove the request file...
3513 */
3514
cb7f98ee 3515 cupsdUnlinkOrRemoveFile(con->filename);
ef416fc2 3516 cupsdClearString(&con->filename);
3517
ef416fc2 3518 /*
c41769ff 3519 * Set the NeedReload flag...
ef416fc2 3520 */
3521
c41769ff 3522 NeedReload = RELOAD_CUPSD;
ef416fc2 3523 ReloadTime = time(NULL);
3524
3525 /*
3526 * Return that the file was created successfully...
3527 */
3528
3529 return (HTTP_CREATED);
3530}
3531
3532
e1d6a774 3533/*
3534 * 'is_cgi()' - Is the resource a CGI script/program?
3535 */
3536
3537static int /* O - 1 = CGI, 0 = file */
3538is_cgi(cupsd_client_t *con, /* I - Client connection */
3539 const char *filename, /* I - Real filename */
3540 struct stat *filestats, /* I - File information */
3541 mime_type_t *type) /* I - MIME type */
3542{
3543 const char *options; /* Options on URL */
3544
3545
e1d6a774 3546 /*
3547 * Get the options, if any...
3548 */
3549
3550 if ((options = strchr(con->uri, '?')) != NULL)
a0f6818e
MS		 3551 {
3552 options ++;
3553 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", options);
3554 }
b86bc4cf 3555
e1d6a774 3556 /*
3557 * Check for known types...
3558 */
3559
88f9aafc 3560 if (!type || _cups_strcasecmp(type->super, "application"))
e1d6a774 3561 {
b9faaae1 3562 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3563 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3564 "type=%s/%s, returning 0", con->http.fd, filename,
3565 filestats, type ? type->super : "unknown",
b9faaae1 3566 type ? type->type : "unknown");
e1d6a774 3567 return (0);
3568 }
3569
88f9aafc 3570 if (!_cups_strcasecmp(type->type, "x-httpd-cgi") &&
e1d6a774 3571 (filestats->st_mode & 0111))
3572 {
3573 /*
3574 * "application/x-httpd-cgi" is a CGI script.
3575 */
3576
3577 cupsdSetString(&con->command, filename);
3578
a0f6818e
MS		 3579 if (options)
3580 cupsdSetStringf(&con->options, " %s", options);
e1d6a774 3581
3582 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3583 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3584 "type=%s/%s, returning 1", con->http.fd, filename,
3585 filestats, type->super, type->type);
e1d6a774 3586 return (1);
3587 }
3588#ifdef HAVE_JAVA
88f9aafc 3589 else if (!_cups_strcasecmp(type->type, "x-httpd-java"))
e1d6a774 3590 {
3591 /*
3592 * "application/x-httpd-java" is a Java servlet.
3593 */
3594
3595 cupsdSetString(&con->command, CUPS_JAVA);
3596
3597 if (options)
b94498cf 3598 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3599 else
b94498cf 3600 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3601
3602 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3603 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3604 "type=%s/%s, returning 1", con->http.fd, filename,
3605 filestats, type->super, type->type);
e1d6a774 3606 return (1);
3607 }
3608#endif /* HAVE_JAVA */
3609#ifdef HAVE_PERL
88f9aafc 3610 else if (!_cups_strcasecmp(type->type, "x-httpd-perl"))
e1d6a774 3611 {
3612 /*
3613 * "application/x-httpd-perl" is a Perl page.
3614 */
3615
3616 cupsdSetString(&con->command, CUPS_PERL);
3617
3618 if (options)
b94498cf 3619 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3620 else
b94498cf 3621 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3622
3623 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3624 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3625 "type=%s/%s, returning 1", con->http.fd, filename,
3626 filestats, type->super, type->type);
e1d6a774 3627 return (1);
3628 }
3629#endif /* HAVE_PERL */
3630#ifdef HAVE_PHP
88f9aafc 3631 else if (!_cups_strcasecmp(type->type, "x-httpd-php"))
e1d6a774 3632 {
3633 /*
3634 * "application/x-httpd-php" is a PHP page.
3635 */
3636
3637 cupsdSetString(&con->command, CUPS_PHP);
3638
3639 if (options)
b94498cf 3640 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3641 else
b94498cf 3642 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3643
3644 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3645 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3646 "type=%s/%s, returning 1", con->http.fd, filename,
3647 filestats, type->super, type->type);
e1d6a774 3648 return (1);
3649 }
3650#endif /* HAVE_PHP */
3651#ifdef HAVE_PYTHON
88f9aafc 3652 else if (!_cups_strcasecmp(type->type, "x-httpd-python"))
e1d6a774 3653 {
3654 /*
3655 * "application/x-httpd-python" is a Python page.
3656 */
3657
3658 cupsdSetString(&con->command, CUPS_PYTHON);
3659
3660 if (options)
b94498cf 3661 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3662 else
b94498cf 3663 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3664
3665 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3666 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3667 "type=%s/%s, returning 1", con->http.fd, filename,
3668 filestats, type->super, type->type);
e1d6a774 3669 return (1);
3670 }
3671#endif /* HAVE_PYTHON */
3672
b9faaae1 3673 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3674 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3675 "type=%s/%s, returning 0", con->http.fd, filename,
3676 filestats, type->super, type->type);
e1d6a774 3677 return (0);
3678}
3679
3680
ef416fc2 3681/*
3682 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3683 */
3684
3685static int /* O - 0 if relative, 1 if absolute */
3686is_path_absolute(const char *path) /* I - Input path */
3687{
3688 /*
3689 * Check for a leading slash...
3690 */
3691
3692 if (path[0] != '/')
3693 return (0);
3694
3695 /*
3696 * Check for "/.." in the path...
3697 */
3698
3699 while ((path = strstr(path, "/..")) != NULL)
3700 {
3701 if (!path[3] || path[3] == '/')
3702 return (0);
3703
3704 path ++;
3705 }
3706
3707 /*
3708 * If we haven't found any relative paths, return 1 indicating an
3709 * absolute path...
3710 */
3711
3712 return (1);
3713}
3714
3715
3716/*
3717 * 'pipe_command()' - Pipe the output of a command to the remote client.
3718 */
3719
3720static int /* O - Process ID */
3721pipe_command(cupsd_client_t *con, /* I - Client connection */
3722 int infile, /* I - Standard input for command */
3723 int *outfile, /* O - Standard output for command */
3724 char *command, /* I - Command to run */
3725 char *options, /* I - Options for command */
3726 int root) /* I - Run as root? */
3727{
3728 int i; /* Looping var */
3729 int pid; /* Process ID */
b423cd4c 3730 char *commptr, /* Command string pointer */
3731 commch; /* Command string character */
ef416fc2 3732 char *uriptr; /* URI string pointer */
3733 int fds[2]; /* Pipe FDs */
3734 int argc; /* Number of arguments */
3735 int envc; /* Number of environment variables */
3736 char argbuf[10240], /* Argument buffer */
3737 *argv[100], /* Argument strings */
b94498cf 3738 *envp[MAX_ENV + 20]; /* Environment variables */
c7017ecc 3739 char auth_type[256], /* AUTH_TYPE environment variable */
b94498cf 3740 content_length[1024], /* CONTENT_LENGTH environment variable */
ef416fc2 3741 content_type[1024], /* CONTENT_TYPE environment variable */
3742 http_cookie[32768], /* HTTP_COOKIE environment variable */
f7deaa1a 3743 http_referer[1024], /* HTTP_REFERER environment variable */
ef416fc2 3744 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3745 lang[1024], /* LANG environment variable */
b423cd4c 3746 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 3747 remote_addr[1024], /* REMOTE_ADDR environment variable */
3748 remote_host[1024], /* REMOTE_HOST environment variable */
3749 remote_user[1024], /* REMOTE_USER environment variable */
b94498cf 3750 script_filename[1024], /* SCRIPT_FILENAME environment variable */
ef416fc2 3751 script_name[1024], /* SCRIPT_NAME environment variable */
3752 server_name[1024], /* SERVER_NAME environment variable */
3753 server_port[1024]; /* SERVER_PORT environment variable */
7dfedb92 3754 ipp_attribute_t *attr; /* attributes-natural-language attribute */
ef416fc2 3755
3756
3757 /*
3758 * Parse a copy of the options string, which is of the form:
3759 *
b423cd4c 3760 * argument+argument+argument
3761 * ?argument+argument+argument
3762 * param=value&param=value
3763 * ?param=value&param=value
3764 * /name?argument+argument+argument
3765 * /name?param=value&param=value
ef416fc2 3766 *
3767 * If the string contains an "=" character after the initial name,
3768 * then we treat it as a HTTP GET form request and make a copy of
3769 * the remaining string for the environment variable.
3770 *
3771 * The string is always parsed out as command-line arguments, to
3772 * be consistent with Apache...
3773 */
3774
3775 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3776 "[Client %d] pipe_command infile=%d, outfile=%p, "
3777 "command=\"%s\", options=\"%s\", root=%d",
3778 con->http.fd, infile, outfile, command,
b9faaae1 3779 options ? options : "(null)", root);
ef416fc2 3780
b86bc4cf 3781 argv[0] = command;
ef416fc2 3782
b423cd4c 3783 if (options)
c7017ecc
MS		 3784 {
3785 commptr = options;
3786 if (*commptr == ' ')
3787 commptr ++;
3788 strlcpy(argbuf, commptr, sizeof(argbuf));
3789 }
b423cd4c 3790 else
3791 argbuf[0] = '\0';
3792
3793 if (argbuf[0] == '/')
ef416fc2 3794 {
3795 /*
b423cd4c 3796 * Found some trailing path information, set PATH_INFO...
ef416fc2 3797 */
3798
b423cd4c 3799 if ((commptr = strchr(argbuf, '?')) == NULL)
3800 commptr = argbuf + strlen(argbuf);
ef416fc2 3801
b423cd4c 3802 commch = *commptr;
3803 *commptr = '\0';
3804 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
3805 *commptr = commch;
3806 }
3807 else
3808 {
3809 commptr = argbuf;
3810 path_info[0] = '\0';
b94498cf 3811
3812 if (*commptr == ' ')
3813 commptr ++;
b423cd4c 3814 }
ef416fc2 3815
cb7f98ee 3816 if (*commptr == '?' && con->operation == HTTP_STATE_GET && !con->query_string)
b423cd4c 3817 {
3818 commptr ++;
b86bc4cf 3819 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr);
b423cd4c 3820 }
ef416fc2 3821
b423cd4c 3822 argc = 1;
ef416fc2 3823
b423cd4c 3824 if (*commptr)
3825 {
3826 argv[argc ++] = commptr;
ef416fc2 3827
b423cd4c 3828 for (; *commptr && argc < 99; commptr ++)
3829 {
ef416fc2 3830 /*
b423cd4c 3831 * Break arguments whenever we see a + or space...
ef416fc2 3832 */
3833
b423cd4c 3834 if (*commptr == ' ' || *commptr == '+')
3835 {
3836 while (*commptr == ' ' || *commptr == '+')
3837 *commptr++ = '\0';
ef416fc2 3838
b423cd4c 3839 /*
3840 * If we don't have a blank string, save it as another argument...
3841 */
ef416fc2 3842
b423cd4c 3843 if (*commptr)
3844 {
3845 argv[argc] = commptr;
3846 argc ++;
3847 }
3848 else
3849 break;
3850 }
3851 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
3852 isxdigit(commptr[2] & 255))
3853 {
3854 /*
3855 * Convert the %xx notation to the individual character.
3856 */
ef416fc2 3857
b423cd4c 3858 if (commptr[1] >= '0' && commptr[1] <= '9')
3859 *commptr = (commptr[1] - '0') << 4;
3860 else
3861 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
ef416fc2 3862
b423cd4c 3863 if (commptr[2] >= '0' && commptr[2] <= '9')
3864 *commptr |= commptr[2] - '0';
3865 else
3866 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 3867
b423cd4c 3868 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 3869
b423cd4c 3870 /*
3871 * Check for a %00 and break if that is the case...
3872 */
ef416fc2 3873
b423cd4c 3874 if (!*commptr)
3875 break;
3876 }
ef416fc2 3877 }
3878 }
3879
3880 argv[argc] = NULL;
3881
ef416fc2 3882 /*
3883 * Setup the environment variables as needed...
3884 */
3885
b94498cf 3886 if (con->username[0])
3887 {
c7017ecc 3888 snprintf(auth_type, sizeof(auth_type), "AUTH_TYPE=%s",
b94498cf 3889 httpGetField(HTTP(con), HTTP_FIELD_AUTHORIZATION));
3890
3891 if ((uriptr = strchr(auth_type + 10, ' ')) != NULL)
3892 *uriptr = '\0';
3893 }
3894 else
3895 auth_type[0] = '\0';
3896
7dfedb92
MS		 3897 if (con->request &&
3898 (attr = ippFindAttribute(con->request, "attributes-natural-language",
3899 IPP_TAG_LANGUAGE)) != NULL)
3900 {
3901 switch (strlen(attr->values[0].string.text))
3902 {
3903 default :
3904 /*
3905 * This is an unknown or badly formatted language code; use
3906 * the POSIX locale...
3907 */
3908
5a9febac 3909 strlcpy(lang, "LANG=C", sizeof(lang));
7dfedb92
MS		 3910 break;
3911
3912 case 2 :
3913 /*
3914 * Just the language code (ll)...
3915 */
3916
3917 snprintf(lang, sizeof(lang), "LANG=%s.UTF8",
3918 attr->values[0].string.text);
3919 break;
3920
3921 case 5 :
3922 /*
3923 * Language and country code (ll-cc)...
3924 */
3925
3926 snprintf(lang, sizeof(lang), "LANG=%c%c_%c%c.UTF8",
3927 attr->values[0].string.text[0],
3928 attr->values[0].string.text[1],
3929 toupper(attr->values[0].string.text[3] & 255),
3930 toupper(attr->values[0].string.text[4] & 255));
3931 break;
3932 }
3933 }
3934 else if (con->language)
3935 snprintf(lang, sizeof(lang), "LANG=%s.UTF8", con->language->language);
ef416fc2 3936 else
5a9febac 3937 strlcpy(lang, "LANG=C", sizeof(lang));
ef416fc2 3938
5a9febac 3939 strlcpy(remote_addr, "REMOTE_ADDR=", sizeof(remote_addr));
ef416fc2 3940 httpAddrString(con->http.hostaddr, remote_addr + 12,
3941 sizeof(remote_addr) - 12);
3942
3943 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
3944 con->http.hostname);
3945
3946 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
3947 if ((uriptr = strchr(script_name, '?')) != NULL)
3948 *uriptr = '\0';
3949
b94498cf 3950 snprintf(script_filename, sizeof(script_filename), "SCRIPT_FILENAME=%s%s",
3951 DocumentRoot, script_name + 12);
3952
ef416fc2 3953 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
3954
0268488e
MS		 3955 if (con->http.fields[HTTP_FIELD_HOST][0])
3956 {
3957 char *nameptr; /* Pointer to ":port" */
3958
3959 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3960 con->http.fields[HTTP_FIELD_HOST]);
3961 if ((nameptr = strrchr(server_name, ':')) != NULL && !strchr(nameptr, ']'))
3962 *nameptr = '\0'; /* Strip trailing ":port" */
3963 }
3964 else
3965 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3966 con->servername);
ef416fc2 3967
3968 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
3969
b94498cf 3970 if (auth_type[0])
3971 envp[envc ++] = auth_type;
3972
ef416fc2 3973 envp[envc ++] = lang;
3974 envp[envc ++] = "REDIRECT_STATUS=1";
b94498cf 3975 envp[envc ++] = "GATEWAY_INTERFACE=CGI/1.1";
ef416fc2 3976 envp[envc ++] = server_name;
3977 envp[envc ++] = server_port;
3978 envp[envc ++] = remote_addr;
3979 envp[envc ++] = remote_host;
3980 envp[envc ++] = script_name;
b94498cf 3981 envp[envc ++] = script_filename;
ef416fc2 3982
b423cd4c 3983 if (path_info[0])
3984 envp[envc ++] = path_info;
3985
ef416fc2 3986 if (con->username[0])
3987 {
3988 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
3989
3990 envp[envc ++] = remote_user;
3991 }
3992
3993 if (con->http.version == HTTP_1_1)
3994 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
3995 else if (con->http.version == HTTP_1_0)
3996 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
3997 else
3998 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
3999
4000 if (con->http.cookie)
4001 {
4002 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
4003 con->http.cookie);
4004 envp[envc ++] = http_cookie;
4005 }
4006
4007 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
4008 {
4009 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
4010 con->http.fields[HTTP_FIELD_USER_AGENT]);
4011 envp[envc ++] = http_user_agent;
4012 }
4013
f7deaa1a 4014 if (con->http.fields[HTTP_FIELD_REFERER][0])
4015 {
4016 snprintf(http_referer, sizeof(http_referer), "HTTP_REFERER=%s",
4017 con->http.fields[HTTP_FIELD_REFERER]);
4018 envp[envc ++] = http_referer;
4019 }
4020
cb7f98ee 4021 if (con->operation == HTTP_STATE_GET)
ef416fc2 4022 {
ef416fc2 4023 envp[envc ++] = "REQUEST_METHOD=GET";
4024
b86bc4cf 4025 if (con->query_string)
ef416fc2 4026 {
4027 /*
4028 * Add GET form variables after ?...
4029 */
4030
b86bc4cf 4031 envp[envc ++] = con->query_string;
ef416fc2 4032 }
3dfe78b3
MS		 4033 else
4034 envp[envc ++] = "QUERY_STRING=";
ef416fc2 4035 }
4036 else
4037 {
e1d6a774 4038 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
4039 CUPS_LLCAST con->bytes);
ef416fc2 4040 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
4041 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
4042
4043 envp[envc ++] = "REQUEST_METHOD=POST";
4044 envp[envc ++] = content_length;
4045 envp[envc ++] = content_type;
4046 }
4047
4048 /*
4049 * Tell the CGI if we are using encryption...
4050 */
4051
a74454a7 4052 if (con->http.tls)
ef416fc2 4053 envp[envc ++] = "HTTPS=ON";
4054
4055 /*
4056 * Terminate the environment array...
4057 */
4058
4059 envp[envc] = NULL;
4060
38e73f87 4061 if (LogLevel >= CUPSD_LOG_DEBUG)
ef416fc2 4062 {
4063 for (i = 0; i < argc; i ++)
38e73f87
MS		 4064 cupsdLogMessage(CUPSD_LOG_DEBUG,
4065 "[CGI] argv[%d] = \"%s\"", i, argv[i]);
ef416fc2 4066 for (i = 0; i < envc; i ++)
38e73f87
MS		 4067 cupsdLogMessage(CUPSD_LOG_DEBUG,
4068 "[CGI] envp[%d] = \"%s\"", i, envp[i]);
ef416fc2 4069 }
4070
4071 /*
4072 * Create a pipe for the output...
4073 */
4074
4075 if (cupsdOpenPipe(fds))
4076 {
38e73f87 4077 cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to create pipe for %s - %s",
ef416fc2 4078 argv[0], strerror(errno));
4079 return (0);
4080 }
4081
4082 /*
4083 * Then execute the command...
4084 */
4085
4086 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
38e73f87 4087 -1, -1, root, DefaultProfile, NULL, &pid) < 0)
ef416fc2 4088 {
4089 /*
4090 * Error - can't fork!
4091 */
4092
38e73f87 4093 cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to start %s - %s", argv[0],
ef416fc2 4094 strerror(errno));
4095
4096 cupsdClosePipe(fds);
4097 pid = 0;
4098 }
4099 else
4100 {
4101 /*
4102 * Fork successful - return the PID...
4103 */
4104
4105 if (con->username[0])
0fa6c7fa 4106 cupsdAddCert(pid, con->username, con->type);
ef416fc2 4107
38e73f87 4108 cupsdLogMessage(CUPSD_LOG_DEBUG, "[CGI] Started %s (PID %d)", command, pid);
ef416fc2 4109
4110 *outfile = fds[0];
4111 close(fds[1]);
4112 }
4113
ef416fc2 4114 return (pid);
4115}
4116
4117
e07d4801
MS		 4118/*
4119 * 'valid_host()' - Is the Host: field valid?
4120 */
4121
4122static int /* O - 1 if valid, 0 if not */
4123valid_host(cupsd_client_t *con) /* I - Client connection */
4124{
4125 cupsd_alias_t *a; /* Current alias */
4126 cupsd_netif_t *netif; /* Current network interface */
4127 const char *host, /* Host field */
4128 *end; /* End character */
4129
4130
4131 host = con->http.fields[HTTP_FIELD_HOST];
4132
4133 if (httpAddrLocalhost(con->http.hostaddr))
4134 {
4135 /*
4136 * Only allow "localhost" or the equivalent IPv4 or IPv6 numerical
4137 * addresses when accessing CUPS via the loopback interface...
4138 */
4139
88f9aafc
MS		 4140 return (!_cups_strcasecmp(host, "localhost") ||
4141 !_cups_strncasecmp(host, "localhost:", 10) ||
4142 !_cups_strcasecmp(host, "localhost.") ||
4143 !_cups_strncasecmp(host, "localhost.:", 11) ||
e07d4801 4144#ifdef __linux
88f9aafc
MS		 4145 !_cups_strcasecmp(host, "localhost.localdomain") ||
4146 !_cups_strncasecmp(host, "localhost.localdomain:", 22) ||
e07d4801
MS		 4147#endif /* __linux */
4148 !strcmp(host, "127.0.0.1") ||
4149 !strncmp(host, "127.0.0.1:", 10) ||
4150 !strcmp(host, "[::1]") ||
4151 !strncmp(host, "[::1]:", 6));
4152 }
4153
37e7e6e0 4154#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
e07d4801
MS		 4155 /*
4156 * Check if the hostname is something.local (Bonjour); if so, allow it.
4157 */
4158
a29fd7dd
MS		 4159 if ((end = strrchr(host, '.')) != NULL && end > host &&
4160 (!end[1] || end[1] == ':'))
4161 {
4162 /*
4163 * "." on end, work back to second-to-last "."...
4164 */
4165 for (end --; end > host && *end != '.'; end --);
4166 }
4167
4168 if (end && (!_cups_strcasecmp(end, ".local") ||
4169 !_cups_strncasecmp(end, ".local:", 7) ||
4170 !_cups_strcasecmp(end, ".local.") ||
4171 !_cups_strncasecmp(end, ".local.:", 8)))
e07d4801 4172 return (1);
37e7e6e0 4173#endif /* HAVE_DNSSD || HAVE_AVAHI */
e07d4801
MS		 4174
4175 /*
4176 * Check if the hostname is an IP address...
4177 */
4178
4179 if (isdigit(*host & 255) || *host == '[')
4180 {
4181 /*
4182 * Possible IPv4/IPv6 address...
4183 */
4184
4185 char temp[1024], /* Temporary string */
4186 *ptr; /* Pointer into temporary string */
4187 http_addrlist_t *addrlist; /* List of addresses */
4188
4189
4190 strlcpy(temp, host, sizeof(temp));
4191 if ((ptr = strrchr(temp, ':')) != NULL && !strchr(ptr, ']'))
4192 *ptr = '\0'; /* Strip :port from host value */
4193
4194 if ((addrlist = httpAddrGetList(temp, AF_UNSPEC, NULL)) != NULL)
4195 {
4196 /*
4197 * Good IPv4/IPv6 address...
4198 */
4199
4200 httpAddrFreeList(addrlist);
4201 return (1);
4202 }
4203 }
4204
4205 /*
4206 * Check for (alias) name matches...
4207 */
4208
4209 for (a = (cupsd_alias_t *)cupsArrayFirst(ServerAlias);
4210 a;
4211 a = (cupsd_alias_t *)cupsArrayNext(ServerAlias))
4212 {
4213 /*
4214 * "ServerAlias *" allows all host values through...
4215 */
4216
4217 if (!strcmp(a->name, "*"))
4218 return (1);
4219
88f9aafc 4220 if (!_cups_strncasecmp(host, a->name, a->namelen))
e07d4801
MS		 4221 {
4222 /*
4223 * Prefix matches; check the character at the end - it must be ":", ".",
4224 * ".:", or nul...
4225 */
4226
4227 end = host + a->namelen;
4228
4229 if (!*end || *end == ':' || (*end == '.' && (!end[1] || end[1] == ':')))
4230 return (1);
4231 }
4232 }
4233
37e7e6e0 4234#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
e07d4801
MS		 4235 for (a = (cupsd_alias_t *)cupsArrayFirst(DNSSDAlias);
4236 a;
4237 a = (cupsd_alias_t *)cupsArrayNext(DNSSDAlias))
4238 {
4239 /*
4240 * "ServerAlias *" allows all host values through...
4241 */
4242
4243 if (!strcmp(a->name, "*"))
4244 return (1);
4245
88f9aafc 4246 if (!_cups_strncasecmp(host, a->name, a->namelen))
e07d4801
MS		 4247 {
4248 /*
4249 * Prefix matches; check the character at the end - it must be ":", ".",
4250 * ".:", or nul...
4251 */
4252
4253 end = host + a->namelen;
4254
4255 if (!*end || *end == ':' || (*end == '.' && (!end[1] || end[1] == ':')))
4256 return (1);
4257 }
4258 }
37e7e6e0 4259#endif /* HAVE_DNSSD || HAVE_AVAHI */
e07d4801
MS		 4260
4261 /*
4262 * Check for interface hostname matches...
4263 */
4264
4265 for (netif = (cupsd_netif_t *)cupsArrayFirst(NetIFList);
4266 netif;
4267 netif = (cupsd_netif_t *)cupsArrayNext(NetIFList))
4268 {
88f9aafc 4269 if (!_cups_strncasecmp(host, netif->hostname, netif->hostlen))
e07d4801
MS		 4270 {
4271 /*
4272 * Prefix matches; check the character at the end - it must be ":", ".",
4273 * ".:", or nul...
4274 */
4275
4276 end = host + netif->hostlen;
4277
4278 if (!*end || *end == ':' || (*end == '.' && (!end[1] || end[1] == ':')))
4279 return (1);
4280 }
4281 }
4282
4283 return (0);
4284}
4285
4286
ef416fc2 4287/*
a74454a7 4288 * 'write_file()' - Send a file via HTTP.
e1d6a774 4289 */
4290
4291static int /* O - 0 on failure, 1 on success */
a74454a7 4292write_file(cupsd_client_t *con, /* I - Client connection */
4293 http_status_t code, /* I - HTTP status */
4294 char *filename, /* I - Filename */
4295 char *type, /* I - File type */
4296 struct stat *filestats) /* O - File information */
e1d6a774 4297{
4298 con->file = open(filename, O_RDONLY);
4299
b9faaae1 4300 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 4301 "[Client %d] write_file code=%d, filename=\"%s\" (%d), "
4302 "type=\"%s\", filestats=%p", con->http.fd,
b9faaae1 4303 code, filename, con->file, type ? type : "(null)", filestats);
e1d6a774 4304
4305 if (con->file < 0)
4306 return (0);
4307
4308 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
4309
4310 con->pipe_pid = 0;
4311
5bd77a73 4312 if (!cupsdSendHeader(con, code, type, CUPSD_AUTH_NONE))
e1d6a774 4313 return (0);
4314
4315 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
4316 httpGetDateString(filestats->st_mtime)) < 0)
4317 return (0);
4318 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
4319 CUPS_LLCAST filestats->st_size) < 0)
4320 return (0);
4321 if (httpPrintf(HTTP(con), "\r\n") < 0)
4322 return (0);
4323
07725fee 4324 if (cupsdFlushHeader(con) < 0)
4325 return (0);
d09495fa 4326
cb7f98ee 4327 con->http.data_encoding = HTTP_ENCODING_LENGTH;
e1d6a774 4328 con->http.data_remaining = filestats->st_size;
4329
4330 if (con->http.data_remaining <= INT_MAX)
4331 con->http._data_remaining = con->http.data_remaining;
4332 else
4333 con->http._data_remaining = INT_MAX;
4334
f7deaa1a 4335 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient,
4336 (cupsd_selfunc_t)cupsdWriteClient, con);
e1d6a774 4337
4338 return (1);
4339}
4340
4341
4342/*
f899b121 4343 * 'write_pipe()' - Flag that data is available on the CGI pipe.
4344 */
4345
4346static void
4347write_pipe(cupsd_client_t *con) /* I - Client connection */
4348{
b9faaae1 4349 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 4350 "[Client %d] write_pipe CGI output on fd %d",
4351 con->http.fd, con->file);
f899b121 4352
4353 con->file_ready = 1;
4354
4355 cupsdRemoveSelect(con->file);
4356 cupsdAddSelect(con->http.fd, NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
4357}
4358
4359
4360/*
f2d18633 4361 * End of "$Id$".
ef416fc2 4362 */
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