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Import CUPS v1.7.2
[thirdparty/cups.git] / scheduler / client.c
CommitLineData
ef416fc2 1/*
71f63681 2 * "$Id: client.c 11642 2014-02-27 15:57:59Z msweet $"
ef416fc2 3 *
71f63681 4 * Client routines for the CUPS scheduler.
ef416fc2 5 *
71f63681
MS		 6 * Copyright 2007-2014 by Apple Inc.
7 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
f7deaa1a 8 *
71f63681
MS		 9 * This file contains Kerberos support code, copyright 2006 by
10 * Jelmer Vernooij.
ef416fc2 11 *
71f63681
MS		 12 * These coded instructions, statements, and computer programs are the
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
19/*
20 * Include necessary headers...
21 */
22
ef416fc2 23#include "cupsd.h"
24
cb7f98ee
MS		 25#ifdef __APPLE__
26# include <libproc.h>
27#endif /* __APPLE__ */
749b1e90
MS		 28#ifdef HAVE_TCPD_H
29# include <tcpd.h>
30#endif /* HAVE_TCPD_H */
31
ef416fc2 32
85dda01c
MS		 33/*
34 * Local globals...
35 */
36
37static const char * const http_states[] =
38 { /* HTTP state strings */
a469f8a5
MS		 39 "HTTP_STATE_ERROR",
40 "HTTP_STATE_WAITING",
41 "HTTP_STATE_OPTIONS",
42 "HTTP_STATE_GET",
43 "HTTP_STATE_GET_SEND",
44 "HTTP_STATE_HEAD",
45 "HTTP_STATE_POST",
46 "HTTP_STATE_POST_RECV",
47 "HTTP_STATE_POST_SEND",
48 "HTTP_STATE_PUT",
49 "HTTP_STATE_PUT_RECV",
50 "HTTP_STATE_DELETE",
51 "HTTP_STATE_TRACE",
52 "HTTP_STATE_CONNECT",
53 "HTTP_STATE_STATUS",
54 "HTTP_STATE_UNKNOWN_METHOD",
55 "HTTP_STATE_UNKNOWN_VERSION"
85dda01c
MS		 56 };
57static const char * const ipp_states[] =
58 { /* IPP state strings */
59 "IPP_IDLE",
60 "IPP_HEADER",
61 "IPP_ATTRIBUTE",
62 "IPP_DATA"
63 };
64
65
ef416fc2 66/*
67 * Local functions...
68 */
69
70static int check_if_modified(cupsd_client_t *con,
71 struct stat *filestats);
3dfe78b3
MS		 72static int compare_clients(cupsd_client_t *a, cupsd_client_t *b,
73 void *data);
ee571f26 74static int data_ready(cupsd_client_t *con);
f7deaa1a 75static char *get_file(cupsd_client_t *con, struct stat *filestats,
ef416fc2 76 char *filename, int len);
c41769ff 77static http_status_t install_cupsd_conf(cupsd_client_t *con);
e1d6a774 78static int is_cgi(cupsd_client_t *con, const char *filename,
79 struct stat *filestats, mime_type_t *type);
ef416fc2 80static int is_path_absolute(const char *path);
81static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
82 char *command, char *options, int root);
e07d4801 83static int valid_host(cupsd_client_t *con);
a74454a7 84static int write_file(cupsd_client_t *con, http_status_t code,
85 char *filename, char *type,
86 struct stat *filestats);
f899b121 87static void write_pipe(cupsd_client_t *con);
ef416fc2 88
89
90/*
91 * 'cupsdAcceptClient()' - Accept a new client.
92 */
93
94void
95cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
96{
ef416fc2 97 int count; /* Count of connections on a host */
98 int val; /* Parameter value */
bd7854cb 99 cupsd_client_t *con, /* New client pointer */
100 *tempcon; /* Temporary client pointer */
ef416fc2 101 http_addrlist_t *addrlist, /* List of adddresses for host */
102 *addr; /* Current address */
103 socklen_t addrlen; /* Length of address */
104 char *hostname; /* Hostname for address */
105 http_addr_t temp; /* Temporary address variable */
106 static time_t last_dos = 0; /* Time of last DoS attack */
749b1e90
MS		 107#ifdef HAVE_TCPD_H
108 struct request_info wrap_req; /* TCP wrappers request information */
109#endif /* HAVE_TCPD_H */
ef416fc2 110
111
112 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1 113 "cupsdAcceptClient(lis=%p(%d)) Clients=%d",
bd7854cb 114 lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 115
116 /*
117 * Make sure we don't have a full set of clients already...
118 */
119
bd7854cb 120 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 121 return;
122
123 /*
124 * Get a pointer to the next available client...
125 */
126
bd7854cb 127 if (!Clients)
128 Clients = cupsArrayNew(NULL, NULL);
129
130 if (!Clients)
91c84a35
MS		 131 {
132 cupsdLogMessage(CUPSD_LOG_ERROR,
3dfe78b3
MS		 133 "Unable to allocate memory for clients array!");
134 cupsdPauseListening();
135 return;
136 }
137
138 if (!ActiveClients)
139 ActiveClients = cupsArrayNew((cups_array_func_t)compare_clients, NULL);
140
141 if (!ActiveClients)
142 {
143 cupsdLogMessage(CUPSD_LOG_ERROR,
144 "Unable to allocate memory for active clients array!");
91c84a35 145 cupsdPauseListening();
bd7854cb 146 return;
91c84a35 147 }
bd7854cb 148
91c84a35
MS		 149 if ((con = calloc(1, sizeof(cupsd_client_t))) == NULL)
150 {
151 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to allocate memory for client!");
152 cupsdPauseListening();
153 return;
154 }
ef416fc2 155
85dda01c 156 con->file = -1;
dcb445bc 157 con->http.activity = time(NULL);
85dda01c
MS		 158 con->http.hostaddr = &(con->clientaddr);
159 con->http.wait_value = 10000;
c41769ff 160 con->http.mode = _HTTP_MODE_SERVER;
ef416fc2 161
162 /*
163 * Accept the client and get the remote address...
164 */
165
166 addrlen = sizeof(http_addr_t);
167
168 if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
169 &addrlen)) < 0)
170 {
76cd9e37
MS		 171 if (errno == ENFILE || errno == EMFILE)
172 cupsdPauseListening();
173
ef416fc2 174 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
175 strerror(errno));
bd7854cb 176 free(con);
76cd9e37 177
ef416fc2 178 return;
179 }
180
22c9029b
MS		 181 /*
182 * Save the connected port number...
183 */
ef416fc2 184
a469f8a5 185 _httpAddrSetPort(con->http.hostaddr, httpAddrPort(&(lis->address)));
ef416fc2 186
22c9029b
MS		 187#ifdef AF_INET6
188 /*
189 * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
190 * can more easily use...
191 */
ef416fc2 192
22c9029b
MS		 193 if (lis->address.addr.sa_family == AF_INET6 &&
194 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
195 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
196 ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
197 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
ef416fc2 198#endif /* AF_INET6 */
ef416fc2 199
200 /*
201 * Check the number of clients on the same address...
202 */
203
bd7854cb 204 for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
205 tempcon;
206 tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
207 if (httpAddrEqual(tempcon->http.hostaddr, con->http.hostaddr))
ef416fc2 208 {
209 count ++;
210 if (count >= MaxClientsPerHost)
211 break;
212 }
213
214 if (count >= MaxClientsPerHost)
215 {
216 if ((time(NULL) - last_dos) >= 60)
217 {
218 last_dos = time(NULL);
219 cupsdLogMessage(CUPSD_LOG_WARN,
bd7854cb 220 "Possible DoS attack - more than %d clients connecting "
221 "from %s!",
749b1e90
MS		 222 MaxClientsPerHost,
223 httpAddrString(con->http.hostaddr, con->http.hostname,
224 sizeof(con->http.hostname)));
ef416fc2 225 }
226
227#ifdef WIN32
228 closesocket(con->http.fd);
229#else
230 close(con->http.fd);
231#endif /* WIN32 */
232
bd7854cb 233 free(con);
ef416fc2 234 return;
235 }
236
237 /*
238 * Get the hostname or format the IP address as needed...
239 */
240
241 if (httpAddrLocalhost(con->http.hostaddr))
242 {
243 /*
244 * Map accesses from the loopback interface to "localhost"...
245 */
246
247 strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
248 hostname = con->http.hostname;
249 }
250 else
251 {
252 /*
253 * Map accesses from the same host to the server name.
254 */
255
d1c13e16 256 if (HostNameLookups)
ef416fc2 257 hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
258 sizeof(con->http.hostname));
259 else
260 {
261 hostname = NULL;
262 httpAddrString(con->http.hostaddr, con->http.hostname,
263 sizeof(con->http.hostname));
264 }
265 }
266
267 if (hostname == NULL && HostNameLookups == 2)
268 {
269 /*
270 * Can't have an unresolved IP address with double-lookups enabled...
271 */
272
ef416fc2 273#ifdef WIN32
274 closesocket(con->http.fd);
275#else
276 close(con->http.fd);
277#endif /* WIN32 */
278
279 cupsdLogMessage(CUPSD_LOG_WARN,
280 "Name lookup failed - connection from %s closed!",
281 con->http.hostname);
bd7854cb 282
283 free(con);
ef416fc2 284 return;
285 }
286
287 if (HostNameLookups == 2)
288 {
289 /*
290 * Do double lookups as needed...
291 */
292
749b1e90
MS		 293 if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL))
294 != NULL)
ef416fc2 295 {
296 /*
297 * See if the hostname maps to the same IP address...
298 */
299
300 for (addr = addrlist; addr; addr = addr->next)
301 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
302 break;
303 }
304 else
305 addr = NULL;
306
307 httpAddrFreeList(addrlist);
308
309 if (!addr)
310 {
311 /*
312 * Can't have a hostname that doesn't resolve to the same IP address
313 * with double-lookups enabled...
314 */
315
ef416fc2 316#ifdef WIN32
317 closesocket(con->http.fd);
318#else
319 close(con->http.fd);
320#endif /* WIN32 */
321
322 cupsdLogMessage(CUPSD_LOG_WARN,
323 "IP lookup failed - connection from %s closed!",
324 con->http.hostname);
bd7854cb 325 free(con);
ef416fc2 326 return;
327 }
328 }
329
749b1e90
MS		 330#ifdef HAVE_TCPD_H
331 /*
332 * See if the connection is denied by TCP wrappers...
333 */
334
335 request_init(&wrap_req, RQ_DAEMON, "cupsd", RQ_FILE, con->http.fd, NULL);
336 fromhost(&wrap_req);
337
338 if (!hosts_access(&wrap_req))
339 {
749b1e90
MS		 340#ifdef WIN32
341 closesocket(con->http.fd);
342#else
343 close(con->http.fd);
344#endif /* WIN32 */
345
346 cupsdLogMessage(CUPSD_LOG_WARN,
347 "Connection from %s refused by /etc/hosts.allow and "
348 "/etc/hosts.deny rules.", con->http.hostname);
349 free(con);
350 return;
351 }
352#endif /* HAVE_TCPD_H */
353
ef416fc2 354#ifdef AF_LOCAL
355 if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
cb7f98ee
MS		 356 {
357# ifdef __APPLE__
358 socklen_t peersize; /* Size of peer credentials */
359 pid_t peerpid; /* Peer process ID */
360 char name[256]; /* Name of process */
361
362 peersize = sizeof(peerpid);
363 if (!getsockopt(con->http.fd, SOL_LOCAL, LOCAL_PEERPID, &peerpid,
364 &peersize))
365 {
366 if (!proc_name(peerpid, name, sizeof(name)))
367 cupsdLogMessage(CUPSD_LOG_DEBUG,
368 "[Client %d] Accepted from %s (Domain ???[%d])",
369 con->http.fd, con->http.hostname, (int)peerpid);
370 else
371 cupsdLogMessage(CUPSD_LOG_DEBUG,
372 "[Client %d] Accepted from %s (Domain %s[%d])",
373 con->http.fd, con->http.hostname, name, (int)peerpid);
374 }
375 else
376# endif /* __APPLE__ */
377
85dda01c 378 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Accepted from %s (Domain)",
ef416fc2 379 con->http.fd, con->http.hostname);
cb7f98ee 380 }
ef416fc2 381 else
382#endif /* AF_LOCAL */
85dda01c 383 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Accepted from %s:%d (IPv%d)",
ef416fc2 384 con->http.fd, con->http.hostname,
a469f8a5 385 httpAddrPort(con->http.hostaddr),
22c9029b 386 _httpAddrFamily(con->http.hostaddr) == AF_INET ? 4 : 6);
ef416fc2 387
388 /*
389 * Get the local address the client connected to...
390 */
391
392 addrlen = sizeof(temp);
393 if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
394 {
395 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
396 strerror(errno));
397
5a9febac 398 strlcpy(con->servername, "localhost", sizeof(con->servername));
ef416fc2 399 con->serverport = LocalPort;
400 }
22c9029b
MS		 401#ifdef AF_LOCAL
402 else if (_httpAddrFamily(&temp) == AF_LOCAL)
403 {
5a9febac 404 strlcpy(con->servername, "localhost", sizeof(con->servername));
22c9029b
MS		 405 con->serverport = LocalPort;
406 }
407#endif /* AF_LOCAL */
ef416fc2 408 else
409 {
22c9029b
MS		 410 if (httpAddrLocalhost(&temp))
411 strlcpy(con->servername, "localhost", sizeof(con->servername));
6961465f 412 else if (HostNameLookups)
22c9029b 413 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
ef416fc2 414 else
22c9029b 415 httpAddrString(&temp, con->servername, sizeof(con->servername));
b19ccc9e 416
a469f8a5 417 con->serverport = httpAddrPort(&(lis->address));
ef416fc2 418 }
419
dcb445bc
MS		 420 /*
421 * Add the connection to the array of active clients...
422 */
423
bd7854cb 424 cupsArrayAdd(Clients, con);
425
ef416fc2 426 /*
b9faaae1
MS		 427 * Using TCP_NODELAY improves responsiveness, especially on systems with a slow
428 * loopback interface. Since we write large buffers when sending print files
429 * and requests there shouldn't be any performance penalty for this...
ef416fc2 430 */
431
432 val = 1;
f7deaa1a 433 setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
ef416fc2 434
435 /*
436 * Close this file on all execs...
437 */
438
439 fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
440
441 /*
b9faaae1 442 * Add the socket to the server select.
ef416fc2 443 */
444
f7deaa1a 445 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 446
1bc82dd9
MS		 447 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Waiting for request.",
448 con->http.fd);
449
ef416fc2 450 /*
451 * Temporarily suspend accept()'s until we lose a client...
452 */
453
bd7854cb 454 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 455 cupsdPauseListening();
456
457#ifdef HAVE_SSL
458 /*
459 * See if we are connecting on a secure port...
460 */
461
462 if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
463 {
464 /*
465 * https connection; go secure...
466 */
467
468 con->http.encryption = HTTP_ENCRYPT_ALWAYS;
469
82cc1f9a 470 if (!cupsdStartTLS(con))
411affcf 471 cupsdCloseClient(con);
ef416fc2 472 }
473 else
474 con->auto_ssl = 1;
475#endif /* HAVE_SSL */
476}
477
478
479/*
480 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
481 */
482
483void
484cupsdCloseAllClients(void)
485{
bd7854cb 486 cupsd_client_t *con; /* Current client */
487
488
b9faaae1
MS		 489 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdCloseAllClients() Clients=%d",
490 cupsArrayCount(Clients));
491
bd7854cb 492 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
493 con;
494 con = (cupsd_client_t *)cupsArrayNext(Clients))
49d87452
MS		 495 if (cupsdCloseClient(con))
496 cupsdCloseClient(con);
ef416fc2 497}
498
499
500/*
501 * 'cupsdCloseClient()' - Close a remote client.
502 */
503
504int /* O - 1 if partial close, 0 if fully closed */
505cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
506{
507 int partial; /* Do partial close for SSL? */
508#ifdef HAVE_LIBSSL
ef416fc2 509#elif defined(HAVE_GNUTLS)
89d46774 510# elif defined(HAVE_CDSASSL)
ef416fc2 511#endif /* HAVE_LIBSSL */
512
513
85dda01c
MS		 514 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Closing connection.",
515 con->http.fd);
ef416fc2 516
517 /*
518 * Flush pending writes before closing...
519 */
520
521 httpFlushWrite(HTTP(con));
522
523 partial = 0;
524
525#ifdef HAVE_SSL
526 /*
527 * Shutdown encryption as needed...
528 */
529
530 if (con->http.tls)
531 {
532 partial = 1;
533
82cc1f9a 534 cupsdEndTLS(con);
ef416fc2 535 }
536#endif /* HAVE_SSL */
537
538 if (con->pipe_pid != 0)
539 {
540 /*
541 * Stop any CGI process...
542 */
543
ef416fc2 544 cupsdEndProcess(con->pipe_pid, 1);
545 con->pipe_pid = 0;
546 }
547
548 if (con->file >= 0)
549 {
f7deaa1a 550 cupsdRemoveSelect(con->file);
ef416fc2 551
ef416fc2 552 close(con->file);
553 con->file = -1;
554 }
555
556 /*
557 * Close the socket and clear the file from the input set for select()...
558 */
559
3dfe78b3 560 if (con->http.fd >= 0)
ef416fc2 561 {
3dfe78b3
MS		 562 cupsArrayRemove(ActiveClients, con);
563 cupsdSetBusyState();
564
ef416fc2 565 if (partial)
566 {
567 /*
568 * Only do a partial close so that the encrypted client gets everything.
569 */
570
ef416fc2 571 shutdown(con->http.fd, 0);
f7deaa1a 572 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
1bc82dd9
MS		 573
574 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Waiting for socket close.",
575 con->http.fd);
ef416fc2 576 }
577 else
578 {
579 /*
580 * Shut the socket down fully...
581 */
582
f7deaa1a 583 cupsdRemoveSelect(con->http.fd);
ef416fc2 584 close(con->http.fd);
ef416fc2 585 con->http.fd = -1;
586 }
587 }
588
589 if (!partial)
590 {
591 /*
592 * Free memory...
593 */
594
595 if (con->http.input_set)
596 free(con->http.input_set);
597
598 httpClearCookie(HTTP(con));
9f5eb9be 599 httpClearFields(HTTP(con));
ef416fc2 600
601 cupsdClearString(&con->filename);
602 cupsdClearString(&con->command);
603 cupsdClearString(&con->options);
b86bc4cf 604 cupsdClearString(&con->query_string);
ef416fc2 605
606 if (con->request)
607 {
608 ippDelete(con->request);
609 con->request = NULL;
610 }
611
612 if (con->response)
613 {
614 ippDelete(con->response);
615 con->response = NULL;
616 }
617
618 if (con->language)
619 {
620 cupsLangFree(con->language);
621 con->language = NULL;
622 }
623
f7deaa1a 624#ifdef HAVE_AUTHORIZATION_H
625 if (con->authref)
626 {
627 AuthorizationFree(con->authref, kAuthorizationFlagDefaults);
628 con->authref = NULL;
629 }
630#endif /* HAVE_AUTHORIZATION_H */
631
ef416fc2 632 /*
633 * Re-enable new client connections if we are going back under the
634 * limit...
635 */
636
bd7854cb 637 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 638 cupsdResumeListening();
639
640 /*
641 * Compact the list of clients as necessary...
642 */
643
bd7854cb 644 cupsArrayRemove(Clients, con);
ef416fc2 645
bd7854cb 646 free(con);
ef416fc2 647 }
648
649 return (partial);
650}
651
652
d09495fa 653/*
654 * 'cupsdFlushHeader()' - Flush the header fields to the client.
655 */
656
07725fee 657int /* I - Bytes written or -1 on error */
d09495fa 658cupsdFlushHeader(cupsd_client_t *con) /* I - Client to flush to */
659{
07725fee 660 int bytes = httpFlushWrite(HTTP(con));
d09495fa 661
cb7f98ee 662 con->http.data_encoding = HTTP_ENCODING_LENGTH;
07725fee 663
664 return (bytes);
d09495fa 665}
666
667
ef416fc2 668/*
669 * 'cupsdReadClient()' - Read data from a client.
670 */
671
f7deaa1a 672void
ef416fc2 673cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
674{
675 char line[32768], /* Line from client... */
676 operation[64], /* Operation code from socket */
677 version[64], /* HTTP version number string */
678 locale[64], /* Locale */
679 *ptr; /* Pointer into strings */
680 int major, minor; /* HTTP version numbers */
681 http_status_t status; /* Transfer status */
682 ipp_state_t ipp_state; /* State of IPP transfer */
683 int bytes; /* Number of bytes to POST */
684 char *filename; /* Name of file for GET/HEAD */
685 char buf[1024]; /* Buffer for real filename */
686 struct stat filestats; /* File information */
687 mime_type_t *type; /* MIME type of file */
688 cupsd_printer_t *p; /* Printer */
689 static unsigned request_id = 0; /* Request ID for temp files */
690
691
692 status = HTTP_CONTINUE;
693
694 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 695 "[Client %d] cupsdReadClient "
696 "error=%d, "
697 "used=%d, "
698 "state=%s, "
a469f8a5 699 "data_encoding=HTTP_ENCODING_%s, "
85dda01c
MS		 700 "data_remaining=" CUPS_LLFMT ", "
701 "request=%p(%s), "
702 "file=%d",
703 con->http.fd, con->http.error, con->http.used,
a469f8a5 704 http_states[con->http.state + 1],
cb7f98ee 705 con->http.data_encoding == HTTP_ENCODING_CHUNKED ?
b9faaae1 706 "CHUNKED" : "LENGTH",
85dda01c
MS		 707 CUPS_LLCAST con->http.data_remaining,
708 con->request,
709 con->request ? ipp_states[con->request->state] : "",
710 con->file);
ef416fc2 711
ef416fc2 712#ifdef HAVE_SSL
713 if (con->auto_ssl)
714 {
715 /*
716 * Automatically check for a SSL/TLS handshake...
717 */
718
719 con->auto_ssl = 0;
720
721 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
722 (!buf[0] || !strchr("DGHOPT", buf[0])))
723 {
724 /*
725 * Encrypt this connection...
726 */
727
728 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 729 "[Client %d] Saw first byte %02X, auto-negotiating "
730 "SSL/TLS session.", con->http.fd, buf[0] & 255);
ef416fc2 731
82cc1f9a 732 if (!cupsdStartTLS(con))
f7deaa1a 733 cupsdCloseClient(con);
411affcf 734
f7deaa1a 735 return;
ef416fc2 736 }
737 }
738#endif /* HAVE_SSL */
739
740 switch (con->http.state)
741 {
cb7f98ee 742 case HTTP_STATE_WAITING :
ef416fc2 743 /*
744 * See if we've received a request line...
745 */
746
747 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
748 {
f11a948a
MS		 749 if (con->http.error && con->http.error != EPIPE)
750 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 751 "[Client %d] HTTP_STATE_WAITING Closing for error %d "
f11a948a
MS		 752 "(%s)", con->http.fd, con->http.error,
753 strerror(con->http.error));
754 else
755 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 756 "[Client %d] HTTP_STATE_WAITING Closing on EOF",
f11a948a
MS		 757 con->http.fd);
758
f7deaa1a 759 cupsdCloseClient(con);
760 return;
ef416fc2 761 }
762
763 /*
764 * Ignore blank request lines...
765 */
766
767 if (line[0] == '\0')
768 break;
769
770 /*
771 * Clear other state variables...
772 */
773
774 httpClearFields(HTTP(con));
775
776 con->http.activity = time(NULL);
777 con->http.version = HTTP_1_0;
778 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
cb7f98ee 779 con->http.data_encoding = HTTP_ENCODING_LENGTH;
ef416fc2 780 con->http.data_remaining = 0;
781 con->http._data_remaining = 0;
cb7f98ee 782 con->operation = HTTP_STATE_WAITING;
ef416fc2 783 con->bytes = 0;
784 con->file = -1;
785 con->file_ready = 0;
786 con->pipe_pid = 0;
787 con->username[0] = '\0';
788 con->password[0] = '\0';
789 con->uri[0] = '\0';
790
791 cupsdClearString(&con->command);
792 cupsdClearString(&con->options);
b86bc4cf 793 cupsdClearString(&con->query_string);
ef416fc2 794
2abf387c 795 if (con->request)
796 {
797 ippDelete(con->request);
798 con->request = NULL;
799 }
800
801 if (con->response)
802 {
803 ippDelete(con->response);
804 con->response = NULL;
805 }
806
807 if (con->language)
ef416fc2 808 {
809 cupsLangFree(con->language);
810 con->language = NULL;
811 }
812
09a101d6 813#ifdef HAVE_GSSAPI
97c9a8d7 814 con->have_gss = 0;
07ed0e9a 815 con->gss_uid = 0;
09a101d6 816#endif /* HAVE_GSSAPI */
817
ef416fc2 818 /*
819 * Grab the request line...
820 */
821
822 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
823 {
824 case 1 :
c934a06c
MS		 825 if (line[0])
826 {
827 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 828 "[Client %d] Bad request line \"%s\" from %s.",
829 con->http.fd,
c8fef167 830 _httpEncodeURI(buf, line, sizeof(buf)),
c934a06c
MS		 831 con->http.hostname);
832 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
833 cupsdCloseClient(con);
834 }
f7deaa1a 835 return;
ef416fc2 836 case 2 :
837 con->http.version = HTTP_0_9;
838 break;
839 case 3 :
840 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
841 {
842 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 843 "[Client %d] Bad request line \"%s\" from %s.",
844 con->http.fd,
c8fef167 845 _httpEncodeURI(buf, line, sizeof(buf)),
ef416fc2 846 con->http.hostname);
5bd77a73 847 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 848 cupsdCloseClient(con);
849 return;
ef416fc2 850 }
851
852 if (major < 2)
853 {
854 con->http.version = (http_version_t)(major * 100 + minor);
855 if (con->http.version == HTTP_1_1 && KeepAlive)
856 con->http.keep_alive = HTTP_KEEPALIVE_ON;
857 else
858 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
859 }
860 else
861 {
f11a948a 862 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 863 "[Client %d] Unsupported request line \"%s\" "
864 "from %s.", con->http.fd,
c8fef167
MS		 865 _httpEncodeURI(buf, line, sizeof(buf)),
866 con->http.hostname);
5bd77a73 867 cupsdSendError(con, HTTP_NOT_SUPPORTED, CUPSD_AUTH_NONE);
f7deaa1a 868 cupsdCloseClient(con);
869 return;
ef416fc2 870 }
871 break;
872 }
873
874 /*
875 * Handle full URLs in the request line...
876 */
877
878 if (strcmp(con->uri, "*"))
879 {
e6013cfa 880 char scheme[HTTP_MAX_URI], /* Method/scheme */
ef416fc2 881 userpass[HTTP_MAX_URI], /* Username:password */
882 hostname[HTTP_MAX_URI], /* Hostname */
883 resource[HTTP_MAX_URI]; /* Resource path */
884 int port; /* Port number */
885
886
887 /*
888 * Separate the URI into its components...
889 */
890
a4d04587 891 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
e6013cfa 892 scheme, sizeof(scheme),
ef416fc2 893 userpass, sizeof(userpass),
894 hostname, sizeof(hostname), &port,
895 resource, sizeof(resource));
896
897 /*
898 * Only allow URIs with the servername, localhost, or an IP
899 * address...
900 */
901
e6013cfa 902 if (strcmp(scheme, "file") &&
88f9aafc
MS		 903 _cups_strcasecmp(hostname, ServerName) &&
904 _cups_strcasecmp(hostname, "localhost") &&
e6013cfa 905 !isdigit(hostname[0]) && hostname[0] != '[')
ef416fc2 906 {
907 /*
908 * Nope, we don't do proxies...
909 */
910
85dda01c
MS		 911 cupsdLogMessage(CUPSD_LOG_ERROR,
912 "[Client %d] Bad URI \"%s\" in request.",
913 con->http.fd, con->uri);
5bd77a73 914 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE);
f7deaa1a 915 cupsdCloseClient(con);
916 return;
ef416fc2 917 }
918
919 /*
920 * Copy the resource portion back into the URI; both resource and
921 * con->uri are HTTP_MAX_URI bytes in size...
922 */
923
5a9febac 924 strlcpy(con->uri, resource, sizeof(con->uri));
ef416fc2 925 }
926
927 /*
928 * Process the request...
929 */
930
931 if (!strcmp(operation, "GET"))
cb7f98ee 932 con->http.state = HTTP_STATE_GET;
ef416fc2 933 else if (!strcmp(operation, "PUT"))
cb7f98ee 934 con->http.state = HTTP_STATE_PUT;
ef416fc2 935 else if (!strcmp(operation, "POST"))
cb7f98ee 936 con->http.state = HTTP_STATE_POST;
ef416fc2 937 else if (!strcmp(operation, "DELETE"))
cb7f98ee 938 con->http.state = HTTP_STATE_DELETE;
ef416fc2 939 else if (!strcmp(operation, "TRACE"))
cb7f98ee 940 con->http.state = HTTP_STATE_TRACE;
ef416fc2 941 else if (!strcmp(operation, "OPTIONS"))
cb7f98ee 942 con->http.state = HTTP_STATE_OPTIONS;
ef416fc2 943 else if (!strcmp(operation, "HEAD"))
cb7f98ee 944 con->http.state = HTTP_STATE_HEAD;
ef416fc2 945 else
946 {
85dda01c
MS		 947 cupsdLogMessage(CUPSD_LOG_ERROR,
948 "[Client %d] Bad operation \"%s\".", con->http.fd,
949 operation);
5bd77a73 950 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 951 cupsdCloseClient(con);
952 return;
ef416fc2 953 }
954
dfd5680b 955 gettimeofday(&(con->start), NULL);
ef416fc2 956 con->operation = con->http.state;
957
85dda01c 958 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] %s %s HTTP/%d.%d",
89d46774 959 con->http.fd, operation, con->uri,
ef416fc2 960 con->http.version / 100, con->http.version % 100);
961
962 con->http.status = HTTP_OK;
963
49d87452
MS		 964 if (!cupsArrayFind(ActiveClients, con))
965 {
966 cupsArrayAdd(ActiveClients, con);
967 cupsdSetBusyState();
968 }
3dfe78b3 969
cb7f98ee
MS		 970 case HTTP_STATE_OPTIONS :
971 case HTTP_STATE_DELETE :
972 case HTTP_STATE_GET :
973 case HTTP_STATE_HEAD :
974 case HTTP_STATE_POST :
975 case HTTP_STATE_PUT :
976 case HTTP_STATE_TRACE :
ef416fc2 977 /*
978 * Parse incoming parameters until the status changes...
979 */
980
f7deaa1a 981 while ((status = httpUpdate(HTTP(con))) == HTTP_CONTINUE)
ee571f26 982 if (!data_ready(con))
f7deaa1a 983 break;
ef416fc2 984
985 if (status != HTTP_OK && status != HTTP_CONTINUE)
986 {
f11a948a
MS		 987 if (con->http.error && con->http.error != EPIPE)
988 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c
MS		 989 "[Client %d] Closing for error %d (%s) while "
990 "reading headers.",
991 con->http.fd, con->http.error,
f11a948a
MS		 992 strerror(con->http.error));
993 else
994 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c
MS		 995 "[Client %d] Closing on EOF while reading headers.",
996 con->http.fd);
f11a948a 997
5bd77a73 998 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 999 cupsdCloseClient(con);
1000 return;
ef416fc2 1001 }
1002 break;
1003
1004 default :
e6013cfa
MS		 1005 if (!data_ready(con) && recv(con->http.fd, buf, 1, MSG_PEEK) < 1)
1006 {
1007 /*
1008 * Connection closed...
1009 */
1010
f11a948a 1011 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 1012 "[Client %d] Closing on EOF", con->http.fd);
e6013cfa
MS		 1013 cupsdCloseClient(con);
1014 return;
1015 }
ef416fc2 1016 break; /* Anti-compiler-warning-code */
1017 }
1018
1019 /*
1020 * Handle new transfers...
1021 */
1022
1023 if (status == HTTP_OK)
1024 {
1025 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
1026 {
1027 /*
1028 * Figure out the locale from the Accept-Language and Content-Type
1029 * fields...
1030 */
1031
f11a948a
MS		 1032 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE],
1033 ',')) != NULL)
ef416fc2 1034 *ptr = '\0';
1035
f11a948a
MS		 1036 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE],
1037 ';')) != NULL)
ef416fc2 1038 *ptr = '\0';
1039
f11a948a
MS		 1040 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1041 "charset=")) != NULL)
ef416fc2 1042 {
1043 /*
1044 * Combine language and charset, and trim any extra params in the
1045 * content-type.
1046 */
1047
1048 snprintf(locale, sizeof(locale), "%s.%s",
1049 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
1050
1051 if ((ptr = strchr(locale, ',')) != NULL)
1052 *ptr = '\0';
1053 }
1054 else
f8b3a85b
MS		 1055 snprintf(locale, sizeof(locale), "%s.UTF-8",
1056 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE]);
d6ae789d 1057
ef416fc2 1058 con->language = cupsLangGet(locale);
1059 }
1060 else
1061 con->language = cupsLangGet(DefaultLocale);
1062
1063 cupsdAuthorize(con);
1064
85dda01c
MS		 1065 if (!_cups_strncasecmp(con->http.fields[HTTP_FIELD_CONNECTION],
1066 "Keep-Alive", 10) && KeepAlive)
ef416fc2 1067 con->http.keep_alive = HTTP_KEEPALIVE_ON;
85dda01c
MS		 1068 else if (!_cups_strncasecmp(con->http.fields[HTTP_FIELD_CONNECTION],
1069 "close", 5))
52f6f666 1070 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
ef416fc2 1071
1072 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
1073 con->http.version >= HTTP_1_1)
1074 {
1075 /*
1076 * HTTP/1.1 and higher require the "Host:" field...
1077 */
1078
5bd77a73 1079 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1080 {
85dda01c
MS		 1081 cupsdLogMessage(CUPSD_LOG_ERROR,
1082 "[Client %d] Missing Host: field in request.",
1083 con->http.fd);
f7deaa1a 1084 cupsdCloseClient(con);
1085 return;
1086 }
ef416fc2 1087 }
e07d4801 1088 else if (!valid_host(con))
e6013cfa
MS		 1089 {
1090 /*
1091 * Access to localhost must use "localhost" or the corresponding IPv4
1092 * or IPv6 values in the Host: field.
1093 */
1094
f11a948a 1095 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1096 "[Client %d] Request from \"%s\" using invalid Host: "
1097 "field \"%s\"", con->http.fd, con->http.hostname,
1098 con->http.fields[HTTP_FIELD_HOST]);
e6013cfa
MS		 1099
1100 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
1101 {
1102 cupsdCloseClient(con);
1103 return;
1104 }
1105 }
cb7f98ee 1106 else if (con->operation == HTTP_STATE_OPTIONS)
ef416fc2 1107 {
1108 /*
1109 * Do OPTIONS command...
1110 */
1111
5bd77a73 1112 if (con->best && con->best->type != CUPSD_AUTH_NONE)
ef416fc2 1113 {
5bd77a73 1114 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1115 {
1116 cupsdCloseClient(con);
1117 return;
1118 }
ef416fc2 1119 }
1120
88f9aafc 1121 if (!_cups_strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
ef416fc2 1122 con->http.tls == NULL)
1123 {
1124#ifdef HAVE_SSL
1125 /*
1126 * Do encryption stuff...
1127 */
1128
5bd77a73 1129 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1130 {
1131 cupsdCloseClient(con);
1132 return;
1133 }
ef416fc2 1134
1135 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
a469f8a5 1136 httpPrintf(HTTP(con), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n");
ef416fc2 1137 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1138 httpPrintf(HTTP(con), "\r\n");
07725fee 1139
1140 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1141 {
1142 cupsdCloseClient(con);
1143 return;
1144 }
ef416fc2 1145
82cc1f9a 1146 if (!cupsdStartTLS(con))
f7deaa1a 1147 {
1148 cupsdCloseClient(con);
1149 return;
1150 }
ef416fc2 1151#else
5bd77a73 1152 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 1153 {
1154 cupsdCloseClient(con);
1155 return;
1156 }
ef416fc2 1157#endif /* HAVE_SSL */
1158 }
1159
5bd77a73 1160 if (!cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1161 {
1162 cupsdCloseClient(con);
1163 return;
1164 }
ef416fc2 1165
1166 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1167 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1168 httpPrintf(HTTP(con), "\r\n");
07725fee 1169
1170 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1171 {
1172 cupsdCloseClient(con);
1173 return;
1174 }
ef416fc2 1175 }
1176 else if (!is_path_absolute(con->uri))
1177 {
1178 /*
1179 * Protect against malicious users!
1180 */
1181
bf3816c7 1182 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1183 "[Client %d] Request for non-absolute resource \"%s\".",
1184 con->http.fd, con->uri);
bf3816c7 1185
5bd77a73 1186 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1187 {
1188 cupsdCloseClient(con);
1189 return;
1190 }
ef416fc2 1191 }
1192 else
1193 {
85dda01c
MS		 1194 if (!_cups_strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION],
1195 "Upgrade") && con->http.tls == NULL)
ef416fc2 1196 {
1197#ifdef HAVE_SSL
1198 /*
1199 * Do encryption stuff...
1200 */
1201
85dda01c
MS		 1202 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL,
1203 CUPSD_AUTH_NONE))
f7deaa1a 1204 {
1205 cupsdCloseClient(con);
1206 return;
1207 }
ef416fc2 1208
1209 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
a469f8a5 1210 httpPrintf(HTTP(con), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n");
ef416fc2 1211 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1212 httpPrintf(HTTP(con), "\r\n");
07725fee 1213
1214 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1215 {
1216 cupsdCloseClient(con);
1217 return;
1218 }
ef416fc2 1219
82cc1f9a 1220 if (!cupsdStartTLS(con))
f7deaa1a 1221 {
1222 cupsdCloseClient(con);
1223 return;
1224 }
ef416fc2 1225#else
5bd77a73 1226 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 1227 {
1228 cupsdCloseClient(con);
1229 return;
1230 }
ef416fc2 1231#endif /* HAVE_SSL */
1232 }
1233
1234 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1235 {
5bd77a73 1236 cupsdSendError(con, status, CUPSD_AUTH_NONE);
f7deaa1a 1237 cupsdCloseClient(con);
1238 return;
ef416fc2 1239 }
1240
b423cd4c 1241 if (con->http.expect &&
cb7f98ee 1242 (con->operation == HTTP_STATE_POST || con->operation == HTTP_STATE_PUT))
ef416fc2 1243 {
b423cd4c 1244 if (con->http.expect == HTTP_CONTINUE)
1245 {
1246 /*
1247 * Send 100-continue header...
1248 */
1249
5bd77a73 1250 if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1251 {
1252 cupsdCloseClient(con);
1253 return;
1254 }
b423cd4c 1255 }
1256 else
1257 {
1258 /*
1259 * Send 417-expectation-failed header...
1260 */
1261
f11a948a
MS		 1262 if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL,
1263 CUPSD_AUTH_NONE))
f7deaa1a 1264 {
1265 cupsdCloseClient(con);
1266 return;
1267 }
b423cd4c 1268
1269 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1270 httpPrintf(HTTP(con), "\r\n");
07725fee 1271
1272 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1273 {
1274 cupsdCloseClient(con);
1275 return;
1276 }
b423cd4c 1277 }
ef416fc2 1278 }
1279
1280 switch (con->http.state)
1281 {
cb7f98ee 1282 case HTTP_STATE_GET_SEND :
db8b865d 1283 if ((!strncmp(con->uri, "/ppd/", 5) ||
6961465f
MS		 1284 !strncmp(con->uri, "/printers/", 10) ||
1285 !strncmp(con->uri, "/classes/", 9)) &&
ef416fc2 1286 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1287 {
1288 /*
1289 * Send PPD file - get the real printer name since printer
1290 * names are not case sensitive but filenames can be...
1291 */
1292
1293 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1294
db8b865d
MS		 1295 if (!strncmp(con->uri, "/ppd/", 5))
1296 p = cupsdFindPrinter(con->uri + 5);
6961465f 1297 else if (!strncmp(con->uri, "/printers/", 10))
db8b865d 1298 p = cupsdFindPrinter(con->uri + 10);
6961465f
MS		 1299 else
1300 {
1301 p = cupsdFindClass(con->uri + 9);
1302
1303 if (p)
1304 {
1305 int i; /* Looping var */
1306
1307 for (i = 0; i < p->num_printers; i ++)
1308 {
1309 if (!(p->printers[i]->type & CUPS_PRINTER_CLASS))
1310 {
1311 char ppdname[1024];/* PPD filename */
1312
1313 snprintf(ppdname, sizeof(ppdname), "%s/ppd/%s.ppd",
1314 ServerRoot, p->printers[i]->name);
1315 if (!access(ppdname, 0))
1316 {
1317 p = p->printers[i];
1318 break;
1319 }
1320 }
1321 }
1322
1323 if (i >= p->num_printers)
1324 p = NULL;
1325 }
1326 }
db8b865d
MS		 1327
1328 if (p)
1329 {
ef416fc2 1330 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
db8b865d 1331 }
ef416fc2 1332 else
1333 {
5bd77a73 1334 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1335 {
1336 cupsdCloseClient(con);
1337 return;
1338 }
ef416fc2 1339
1340 break;
1341 }
1342 }
db8b865d
MS		 1343 else if ((!strncmp(con->uri, "/icons/", 7) ||
1344 !strncmp(con->uri, "/printers/", 10) ||
7cf5915e
MS		 1345 !strncmp(con->uri, "/classes/", 9)) &&
1346 !strcmp(con->uri + strlen(con->uri) - 4, ".png"))
1347 {
1348 /*
1349 * Send icon file - get the real queue name since queue names are
1350 * not case sensitive but filenames can be...
1351 */
1352
1353 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".png" */
1354
db8b865d
MS		 1355 if (!strncmp(con->uri, "/icons/", 7))
1356 p = cupsdFindPrinter(con->uri + 7);
1357 else if (!strncmp(con->uri, "/printers/", 10))
7cf5915e
MS		 1358 p = cupsdFindPrinter(con->uri + 10);
1359 else
6961465f
MS		 1360 {
1361 p = cupsdFindClass(con->uri + 9);
1362
1363 if (p)
1364 {
1365 int i; /* Looping var */
1366
1367 for (i = 0; i < p->num_printers; i ++)
1368 {
1369 if (!(p->printers[i]->type & CUPS_PRINTER_CLASS))
1370 {
1371 char ppdname[1024];/* PPD filename */
1372
1373 snprintf(ppdname, sizeof(ppdname), "%s/ppd/%s.ppd",
1374 ServerRoot, p->printers[i]->name);
1375 if (!access(ppdname, 0))
1376 {
1377 p = p->printers[i];
1378 break;
1379 }
1380 }
1381 }
1382
1383 if (i >= p->num_printers)
1384 p = NULL;
1385 }
1386 }
7cf5915e
MS		 1387
1388 if (p)
1389 snprintf(con->uri, sizeof(con->uri), "/icons/%s.png", p->name);
1390 else
1391 {
1392 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
1393 {
1394 cupsdCloseClient(con);
1395 return;
1396 }
1397
1398 break;
1399 }
1400 }
0268488e 1401 else if (!WebInterface)
229681c1
MS		 1402 {
1403 /*
1404 * Web interface is disabled. Show an appropriate message...
1405 */
1406
1407 if (!cupsdSendError(con, HTTP_WEBIF_DISABLED, CUPSD_AUTH_NONE))
1408 {
1409 cupsdCloseClient(con);
1410 return;
1411 }
1412
1413 break;
1414 }
0268488e
MS		 1415
1416 if ((!strncmp(con->uri, "/admin", 6) &&
1417 strncmp(con->uri, "/admin/conf/", 12) &&
1418 strncmp(con->uri, "/admin/log/", 11)) ||
1419 !strncmp(con->uri, "/printers", 9) ||
1420 !strncmp(con->uri, "/classes", 8) ||
1421 !strncmp(con->uri, "/help", 5) ||
1422 !strncmp(con->uri, "/jobs", 5))
ef416fc2 1423 {
1424 /*
1425 * Send CGI output...
1426 */
1427
1428 if (!strncmp(con->uri, "/admin", 6))
1429 {
1430 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1431 ServerBin);
1432
b423cd4c 1433 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1434 }
1435 else if (!strncmp(con->uri, "/printers", 9))
1436 {
1437 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1438 ServerBin);
b423cd4c 1439
1440 if (con->uri[9] && con->uri[10])
1441 cupsdSetString(&con->options, con->uri + 9);
1442 else
1443 cupsdSetString(&con->options, NULL);
ef416fc2 1444 }
1445 else if (!strncmp(con->uri, "/classes", 8))
1446 {
1447 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1448 ServerBin);
b423cd4c 1449
1450 if (con->uri[8] && con->uri[9])
1451 cupsdSetString(&con->options, con->uri + 8);
1452 else
1453 cupsdSetString(&con->options, NULL);
ef416fc2 1454 }
1455 else if (!strncmp(con->uri, "/jobs", 5))
1456 {
1457 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1458 ServerBin);
b423cd4c 1459
1460 if (con->uri[5] && con->uri[6])
1461 cupsdSetString(&con->options, con->uri + 5);
1462 else
1463 cupsdSetString(&con->options, NULL);
ef416fc2 1464 }
1465 else
1466 {
1467 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1468 ServerBin);
ef416fc2 1469
b423cd4c 1470 if (con->uri[5] && con->uri[6])
1471 cupsdSetString(&con->options, con->uri + 5);
1472 else
1473 cupsdSetString(&con->options, NULL);
1474 }
ef416fc2 1475
1476 if (!cupsdSendCommand(con, con->command, con->options, 0))
1477 {
5bd77a73 1478 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1479 {
1480 cupsdCloseClient(con);
1481 return;
1482 }
ef416fc2 1483 }
1484 else
1485 cupsdLogRequest(con, HTTP_OK);
1486
1487 if (con->http.version <= HTTP_1_0)
1488 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1489 }
1490 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1491 (strchr(con->uri + 12, '/') ||
1492 strlen(con->uri) == 12)) ||
1493 (!strncmp(con->uri, "/admin/log/", 11) &&
1494 (strchr(con->uri + 11, '/') ||
1495 strlen(con->uri) == 11)))
1496 {
1497 /*
bf3816c7 1498 * GET can only be done to configuration files directly under
ef416fc2 1499 * /admin/conf...
1500 */
1501
bf3816c7
MS		 1502 cupsdLogMessage(CUPSD_LOG_ERROR,
1503 "Request for subdirectory \"%s\"!", con->uri);
1504
5bd77a73 1505 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1506 {
1507 cupsdCloseClient(con);
1508 return;
1509 }
ef416fc2 1510
1511 break;
1512 }
1513 else
1514 {
1515 /*
1516 * Serve a file...
1517 */
1518
1519 if ((filename = get_file(con, &filestats, buf,
1520 sizeof(buf))) == NULL)
1521 {
5bd77a73 1522 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1523 {
1524 cupsdCloseClient(con);
1525 return;
1526 }
ef416fc2 1527
1528 break;
1529 }
1530
4400e98d 1531 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1532
e1d6a774 1533 if (is_cgi(con, filename, &filestats, type))
ef416fc2 1534 {
1535 /*
1536 * Note: con->command and con->options were set by
e1d6a774 1537 * is_cgi()...
ef416fc2 1538 */
1539
1540 if (!cupsdSendCommand(con, con->command, con->options, 0))
1541 {
5bd77a73 1542 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1543 {
1544 cupsdCloseClient(con);
1545 return;
1546 }
ef416fc2 1547 }
1548 else
1549 cupsdLogRequest(con, HTTP_OK);
1550
1551 if (con->http.version <= HTTP_1_0)
1552 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1553 break;
1554 }
1555
1556 if (!check_if_modified(con, &filestats))
1557 {
5bd77a73 1558 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1559 {
1560 cupsdCloseClient(con);
1561 return;
1562 }
ef416fc2 1563 }
1564 else
1565 {
1566 if (type == NULL)
5a9febac 1567 strlcpy(line, "text/plain", sizeof(line));
ef416fc2 1568 else
1569 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1570
a74454a7 1571 if (!write_file(con, HTTP_OK, filename, line, &filestats))
f7deaa1a 1572 {
1573 cupsdCloseClient(con);
1574 return;
1575 }
ef416fc2 1576 }
1577 }
1578 break;
1579
cb7f98ee 1580 case HTTP_STATE_POST_RECV :
ef416fc2 1581 /*
1582 * See if the POST request includes a Content-Length field, and if
1583 * so check the length against any limits that are set...
1584 */
1585
ef416fc2 1586 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1587 MaxRequestSize > 0 &&
1588 con->http.data_remaining > MaxRequestSize)
1589 {
1590 /*
1591 * Request too large...
1592 */
1593
5bd77a73 1594 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1595 {
1596 cupsdCloseClient(con);
1597 return;
1598 }
ef416fc2 1599
1600 break;
1601 }
839a51c8
MS		 1602 else if (con->http.data_remaining < 0 ||
1603 (!con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
cb7f98ee 1604 con->http.data_encoding == HTTP_ENCODING_LENGTH))
ef416fc2 1605 {
1606 /*
1607 * Negative content lengths are invalid!
1608 */
1609
5bd77a73 1610 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1611 {
1612 cupsdCloseClient(con);
1613 return;
1614 }
ef416fc2 1615
1616 break;
1617 }
1618
1619 /*
1620 * See what kind of POST request this is; for IPP requests the
1621 * content-type field will be "application/ipp"...
1622 */
1623
1624 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1625 "application/ipp"))
1626 con->request = ippNew();
229681c1
MS		 1627 else if (!WebInterface)
1628 {
1629 /*
1630 * Web interface is disabled. Show an appropriate message...
1631 */
1632
1633 if (!cupsdSendError(con, HTTP_WEBIF_DISABLED, CUPSD_AUTH_NONE))
1634 {
1635 cupsdCloseClient(con);
1636 return;
1637 }
1638
1639 break;
1640 }
ef416fc2 1641 else if ((!strncmp(con->uri, "/admin", 6) &&
1642 strncmp(con->uri, "/admin/conf/", 12) &&
1643 strncmp(con->uri, "/admin/log/", 11)) ||
1644 !strncmp(con->uri, "/printers", 9) ||
1645 !strncmp(con->uri, "/classes", 8) ||
1646 !strncmp(con->uri, "/help", 5) ||
1647 !strncmp(con->uri, "/jobs", 5))
1648 {
1649 /*
1650 * CGI request...
1651 */
1652
1653 if (!strncmp(con->uri, "/admin", 6))
1654 {
1655 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1656 ServerBin);
1657
b423cd4c 1658 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1659 }
1660 else if (!strncmp(con->uri, "/printers", 9))
1661 {
1662 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1663 ServerBin);
b423cd4c 1664
1665 if (con->uri[9] && con->uri[10])
1666 cupsdSetString(&con->options, con->uri + 9);
1667 else
1668 cupsdSetString(&con->options, NULL);
ef416fc2 1669 }
1670 else if (!strncmp(con->uri, "/classes", 8))
1671 {
1672 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1673 ServerBin);
b423cd4c 1674
1675 if (con->uri[8] && con->uri[9])
1676 cupsdSetString(&con->options, con->uri + 8);
1677 else
1678 cupsdSetString(&con->options, NULL);
ef416fc2 1679 }
1680 else if (!strncmp(con->uri, "/jobs", 5))
1681 {
1682 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1683 ServerBin);
b423cd4c 1684
1685 if (con->uri[5] && con->uri[6])
1686 cupsdSetString(&con->options, con->uri + 5);
1687 else
1688 cupsdSetString(&con->options, NULL);
ef416fc2 1689 }
1690 else
1691 {
1692 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1693 ServerBin);
ef416fc2 1694
b423cd4c 1695 if (con->uri[5] && con->uri[6])
1696 cupsdSetString(&con->options, con->uri + 5);
1697 else
1698 cupsdSetString(&con->options, NULL);
1699 }
ef416fc2 1700
ef416fc2 1701 if (con->http.version <= HTTP_1_0)
1702 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1703 }
1704 else
1705 {
1706 /*
1707 * POST to a file...
1708 */
1709
1710 if ((filename = get_file(con, &filestats, buf,
1711 sizeof(buf))) == NULL)
1712 {
5bd77a73 1713 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1714 {
1715 cupsdCloseClient(con);
1716 return;
1717 }
ef416fc2 1718
1719 break;
1720 }
1721
4400e98d 1722 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1723
e1d6a774 1724 if (!is_cgi(con, filename, &filestats, type))
ef416fc2 1725 {
1726 /*
1727 * Only POST to CGI's...
1728 */
1729
5bd77a73 1730 if (!cupsdSendError(con, HTTP_UNAUTHORIZED, CUPSD_AUTH_NONE))
f7deaa1a 1731 {
1732 cupsdCloseClient(con);
1733 return;
1734 }
ef416fc2 1735 }
1736 }
1737 break;
1738
cb7f98ee 1739 case HTTP_STATE_PUT_RECV :
ef416fc2 1740 /*
1741 * Validate the resource name...
1742 */
1743
c41769ff 1744 if (strcmp(con->uri, "/admin/conf/cupsd.conf"))
ef416fc2 1745 {
1746 /*
c41769ff 1747 * PUT can only be done to the cupsd.conf file...
ef416fc2 1748 */
1749
bf3816c7 1750 cupsdLogMessage(CUPSD_LOG_ERROR,
c41769ff 1751 "[Client %d] Disallowed PUT request for \"%s\".",
85dda01c 1752 con->http.fd, con->uri);
bf3816c7 1753
5bd77a73 1754 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1755 {
1756 cupsdCloseClient(con);
1757 return;
1758 }
ef416fc2 1759
1760 break;
1761 }
1762
1763 /*
1764 * See if the PUT request includes a Content-Length field, and if
1765 * so check the length against any limits that are set...
1766 */
1767
ef416fc2 1768 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1769 MaxRequestSize > 0 &&
1770 con->http.data_remaining > MaxRequestSize)
1771 {
1772 /*
1773 * Request too large...
1774 */
1775
5bd77a73 1776 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1777 {
1778 cupsdCloseClient(con);
1779 return;
1780 }
ef416fc2 1781
1782 break;
1783 }
1784 else if (con->http.data_remaining < 0)
1785 {
1786 /*
1787 * Negative content lengths are invalid!
1788 */
1789
5bd77a73 1790 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1791 {
1792 cupsdCloseClient(con);
1793 return;
1794 }
ef416fc2 1795
1796 break;
1797 }
1798
1799 /*
1800 * Open a temporary file to hold the request...
1801 */
1802
1803 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1804 request_id ++);
1805 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1806
ef416fc2 1807 if (con->file < 0)
1808 {
a4924f6c 1809 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1810 "[Client %d] Unable to create request file "
1811 "\"%s\": %s", con->http.fd, con->filename,
1812 strerror(errno));
a4924f6c 1813
5bd77a73 1814 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1815 {
1816 cupsdCloseClient(con);
1817 return;
1818 }
ef416fc2 1819 }
1820
1821 fchmod(con->file, 0640);
1822 fchown(con->file, RunUser, Group);
1823 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1824 break;
1825
cb7f98ee
MS		 1826 case HTTP_STATE_DELETE :
1827 case HTTP_STATE_TRACE :
5bd77a73 1828 cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE);
f7deaa1a 1829 cupsdCloseClient(con);
1830 return;
ef416fc2 1831
cb7f98ee 1832 case HTTP_STATE_HEAD :
ef416fc2 1833 if (!strncmp(con->uri, "/printers/", 10) &&
1834 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1835 {
1836 /*
1837 * Send PPD file - get the real printer name since printer
1838 * names are not case sensitive but filenames can be...
1839 */
1840
1841 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1842
1843 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1844 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1845 else
1846 {
5bd77a73 1847 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1848 {
1849 cupsdCloseClient(con);
1850 return;
1851 }
ef416fc2 1852
1853 break;
1854 }
1855 }
229681c1
MS		 1856 else if (!strncmp(con->uri, "/printers/", 10) &&
1857 !strcmp(con->uri + strlen(con->uri) - 4, ".png"))
1858 {
1859 /*
1860 * Send PNG file - get the real printer name since printer
1861 * names are not case sensitive but filenames can be...
1862 */
1863
1864 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1865
1866 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1867 snprintf(con->uri, sizeof(con->uri), "/icons/%s.png", p->name);
1868 else
1869 {
1870 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
1871 {
1872 cupsdCloseClient(con);
1873 return;
1874 }
1875
1876 break;
1877 }
1878 }
1879 else if (!WebInterface)
1880 {
60c3ee04 1881 if (!cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE))
229681c1
MS		 1882 {
1883 cupsdCloseClient(con);
1884 return;
1885 }
1886
1887 if (httpPrintf(HTTP(con), "\r\n") < 0)
1888 {
1889 cupsdCloseClient(con);
1890 return;
1891 }
1892
1893 if (cupsdFlushHeader(con) < 0)
1894 {
1895 cupsdCloseClient(con);
1896 return;
1897 }
1898
a469f8a5
MS		 1899 con->http.state = HTTP_STATE_WAITING;
1900 DEBUG_puts("cupsdReadClient: Set state to HTTP_STATE_WAITING "
1901 "after HEAD.");
229681c1
MS		 1902 break;
1903 }
ef416fc2 1904
1905 if ((!strncmp(con->uri, "/admin", 6) &&
1906 strncmp(con->uri, "/admin/conf/", 12) &&
1907 strncmp(con->uri, "/admin/log/", 11)) ||
1908 !strncmp(con->uri, "/printers", 9) ||
1909 !strncmp(con->uri, "/classes", 8) ||
1910 !strncmp(con->uri, "/help", 5) ||
1911 !strncmp(con->uri, "/jobs", 5))
1912 {
1913 /*
1914 * CGI output...
1915 */
1916
5bd77a73 1917 if (!cupsdSendHeader(con, HTTP_OK, "text/html", CUPSD_AUTH_NONE))
f7deaa1a 1918 {
1919 cupsdCloseClient(con);
1920 return;
1921 }
ef416fc2 1922
1923 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 1924 {
1925 cupsdCloseClient(con);
1926 return;
1927 }
ef416fc2 1928
07725fee 1929 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1930 {
1931 cupsdCloseClient(con);
1932 return;
1933 }
d09495fa 1934
ef416fc2 1935 cupsdLogRequest(con, HTTP_OK);
1936 }
1937 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1938 (strchr(con->uri + 12, '/') ||
1939 strlen(con->uri) == 12)) ||
1940 (!strncmp(con->uri, "/admin/log/", 11) &&
1941 (strchr(con->uri + 11, '/') ||
1942 strlen(con->uri) == 11)))
1943 {
1944 /*
1945 * HEAD can only be done to configuration files under
1946 * /admin/conf...
1947 */
1948
bf3816c7 1949 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1950 "[Client %d] Request for subdirectory \"%s\".",
1951 con->http.fd, con->uri);
bf3816c7 1952
5bd77a73 1953 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1954 {
1955 cupsdCloseClient(con);
1956 return;
1957 }
ef416fc2 1958
1959 break;
1960 }
1961 else if ((filename = get_file(con, &filestats, buf,
1962 sizeof(buf))) == NULL)
1963 {
f11a948a
MS		 1964 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html",
1965 CUPSD_AUTH_NONE))
f7deaa1a 1966 {
1967 cupsdCloseClient(con);
1968 return;
1969 }
ef416fc2 1970
1971 cupsdLogRequest(con, HTTP_NOT_FOUND);
1972 }
1973 else if (!check_if_modified(con, &filestats))
1974 {
5bd77a73 1975 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1976 {
1977 cupsdCloseClient(con);
1978 return;
1979 }
ef416fc2 1980
1981 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
1982 }
1983 else
1984 {
1985 /*
1986 * Serve a file...
1987 */
1988
4400e98d 1989 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1990 if (type == NULL)
5a9febac 1991 strlcpy(line, "text/plain", sizeof(line));
ef416fc2 1992 else
1993 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1994
5bd77a73 1995 if (!cupsdSendHeader(con, HTTP_OK, line, CUPSD_AUTH_NONE))
f7deaa1a 1996 {
1997 cupsdCloseClient(con);
1998 return;
1999 }
ef416fc2 2000
2001 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
2002 httpGetDateString(filestats.st_mtime)) < 0)
f7deaa1a 2003 {
2004 cupsdCloseClient(con);
2005 return;
2006 }
ef416fc2 2007
2008 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
2009 (unsigned long)filestats.st_size) < 0)
f7deaa1a 2010 {
2011 cupsdCloseClient(con);
2012 return;
2013 }
ef416fc2 2014
2015 cupsdLogRequest(con, HTTP_OK);
2016 }
2017
2018 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 2019 {
2020 cupsdCloseClient(con);
2021 return;
2022 }
ef416fc2 2023
07725fee 2024 if (cupsdFlushHeader(con) < 0)
f7deaa1a 2025 {
2026 cupsdCloseClient(con);
2027 return;
2028 }
d09495fa 2029
a469f8a5
MS		 2030 con->http.state = HTTP_STATE_WAITING;
2031 DEBUG_puts("cupsdReadClient: Set state to HTTP_STATE_WAITING "
2032 "after HEAD.");
ef416fc2 2033 break;
2034
2035 default :
2036 break; /* Anti-compiler-warning-code */
2037 }
2038 }
2039 }
2040
2041 /*
2042 * Handle any incoming data...
2043 */
2044
2045 switch (con->http.state)
2046 {
cb7f98ee 2047 case HTTP_STATE_PUT_RECV :
f7deaa1a 2048 do
ef416fc2 2049 {
f7deaa1a 2050 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
2051 {
f11a948a
MS		 2052 if (con->http.error && con->http.error != EPIPE)
2053 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2054 "[Client %d] HTTP_STATE_PUT_RECV Closing for error "
f11a948a
MS		 2055 "%d (%s)", con->http.fd, con->http.error,
2056 strerror(con->http.error));
2057 else
2058 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2059 "[Client %d] HTTP_STATE_PUT_RECV Closing on EOF",
f11a948a
MS		 2060 con->http.fd);
2061
f7deaa1a 2062 cupsdCloseClient(con);
2063 return;
2064 }
2065 else if (bytes > 0)
2066 {
2067 con->bytes += bytes;
ef416fc2 2068
f7deaa1a 2069 if (write(con->file, line, bytes) < bytes)
2070 {
2071 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2072 "[Client %d] Unable to write %d bytes to "
2073 "\"%s\": %s", con->http.fd, bytes, con->filename,
2074 strerror(errno));
ef416fc2 2075
f7deaa1a 2076 close(con->file);
2077 con->file = -1;
2078 unlink(con->filename);
2079 cupsdClearString(&con->filename);
ef416fc2 2080
5bd77a73 2081 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2082 {
2083 cupsdCloseClient(con);
2084 return;
2085 }
2086 }
ef416fc2 2087 }
f7deaa1a 2088 }
cb7f98ee 2089 while (con->http.state == HTTP_STATE_PUT_RECV && data_ready(con));
ef416fc2 2090
cb7f98ee 2091 if (con->http.state == HTTP_STATE_STATUS)
ef416fc2 2092 {
2093 /*
2094 * End of file, see how big it is...
2095 */
2096
2097 fstat(con->file, &filestats);
2098
ef416fc2 2099 close(con->file);
2100 con->file = -1;
2101
2102 if (filestats.st_size > MaxRequestSize &&
2103 MaxRequestSize > 0)
2104 {
2105 /*
2106 * Request is too big; remove it and send an error...
2107 */
2108
ef416fc2 2109 unlink(con->filename);
2110 cupsdClearString(&con->filename);
2111
5bd77a73 2112 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2113 {
2114 cupsdCloseClient(con);
2115 return;
2116 }
ef416fc2 2117 }
2118
2119 /*
2120 * Install the configuration file...
2121 */
2122
c41769ff 2123 status = install_cupsd_conf(con);
ef416fc2 2124
2125 /*
2126 * Return the status to the client...
2127 */
2128
5bd77a73 2129 if (!cupsdSendError(con, status, CUPSD_AUTH_NONE))
f7deaa1a 2130 {
2131 cupsdCloseClient(con);
2132 return;
2133 }
ef416fc2 2134 }
2135 break;
2136
cb7f98ee 2137 case HTTP_STATE_POST_RECV :
f7deaa1a 2138 do
ef416fc2 2139 {
f11a948a 2140 if (con->request && con->file < 0)
ef416fc2 2141 {
f7deaa1a 2142 /*
2143 * Grab any request data from the connection...
2144 */
ef416fc2 2145
f7deaa1a 2146 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
ef416fc2 2147 {
f7deaa1a 2148 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2149 "[Client %d] IPP read error: %s", con->http.fd,
2150 cupsLastErrorString());
f7deaa1a 2151
5bd77a73 2152 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 2153 cupsdCloseClient(con);
2154 return;
ef416fc2 2155 }
f7deaa1a 2156 else if (ipp_state != IPP_DATA)
2157 {
cb7f98ee 2158 if (con->http.state == HTTP_STATE_POST_SEND)
f7deaa1a 2159 {
5bd77a73 2160 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 2161 cupsdCloseClient(con);
2162 return;
2163 }
ef416fc2 2164
6961465f
MS		 2165 if (data_ready(con))
2166 continue;
f7deaa1a 2167 break;
2168 }
2169 else
f11a948a 2170 {
85dda01c 2171 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] %d.%d %s %d",
f11a948a
MS		 2172 con->http.fd, con->request->request.op.version[0],
2173 con->request->request.op.version[1],
2174 ippOpString(con->request->request.op.operation_id),
2175 con->request->request.op.request_id);
f7deaa1a 2176 con->bytes += ippLength(con->request);
f11a948a 2177 }
f7deaa1a 2178 }
ef416fc2 2179
cb7f98ee 2180 if (con->file < 0 && con->http.state != HTTP_STATE_POST_SEND)
f7deaa1a 2181 {
2182 /*
2183 * Create a file as needed for the request data...
2184 */
ef416fc2 2185
f11a948a
MS		 2186 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
2187 request_id ++);
f7deaa1a 2188 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
ef416fc2 2189
f7deaa1a 2190 if (con->file < 0)
2191 {
a4924f6c 2192 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2193 "[Client %d] Unable to create request file "
2194 "\"%s\": %s", con->http.fd, con->filename,
2195 strerror(errno));
a4924f6c 2196
5bd77a73 2197 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2198 {
2199 cupsdCloseClient(con);
2200 return;
2201 }
2202 }
ef416fc2 2203
f7deaa1a 2204 fchmod(con->file, 0640);
2205 fchown(con->file, RunUser, Group);
2206 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2207 }
ef416fc2 2208
cb7f98ee 2209 if (con->http.state != HTTP_STATE_POST_SEND)
ef416fc2 2210 {
cb7f98ee
MS		 2211 if (!httpWait(HTTP(con), 0))
2212 return;
2213 else if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
f7deaa1a 2214 {
f11a948a
MS		 2215 if (con->http.error && con->http.error != EPIPE)
2216 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2217 "[Client %d] HTTP_STATE_POST_SEND Closing for "
f11a948a
MS		 2218 "error %d (%s)", con->http.fd, con->http.error,
2219 strerror(con->http.error));
2220 else
2221 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2222 "[Client %d] HTTP_STATE_POST_SEND Closing on EOF",
f11a948a
MS		 2223 con->http.fd);
2224
f7deaa1a 2225 cupsdCloseClient(con);
2226 return;
2227 }
2228 else if (bytes > 0)
2229 {
2230 con->bytes += bytes;
ef416fc2 2231
f7deaa1a 2232 if (write(con->file, line, bytes) < bytes)
2233 {
2234 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2235 "[Client %d] Unable to write %d bytes to "
2236 "\"%s\": %s", con->http.fd, bytes,
2237 con->filename, strerror(errno));
ef416fc2 2238
f7deaa1a 2239 close(con->file);
2240 con->file = -1;
2241 unlink(con->filename);
2242 cupsdClearString(&con->filename);
ef416fc2 2243
f11a948a
MS		 2244 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE,
2245 CUPSD_AUTH_NONE))
f7deaa1a 2246 {
2247 cupsdCloseClient(con);
2248 return;
2249 }
2250 }
2251 }
cb7f98ee 2252 else if (con->http.state == HTTP_STATE_POST_RECV)
f7deaa1a 2253 return;
cb7f98ee 2254 else if (con->http.state != HTTP_STATE_POST_SEND)
f7deaa1a 2255 {
f11a948a 2256 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2257 "[Client %d] Closing on unexpected state %s.",
a469f8a5 2258 con->http.fd, http_states[con->http.state + 1]);
f7deaa1a 2259 cupsdCloseClient(con);
2260 return;
ef416fc2 2261 }
2262 }
f7deaa1a 2263 }
cb7f98ee 2264 while (con->http.state == HTTP_STATE_POST_RECV && data_ready(con));
ef416fc2 2265
cb7f98ee 2266 if (con->http.state == HTTP_STATE_POST_SEND)
ef416fc2 2267 {
2268 if (con->file >= 0)
2269 {
2270 fstat(con->file, &filestats);
2271
ef416fc2 2272 close(con->file);
2273 con->file = -1;
2274
2275 if (filestats.st_size > MaxRequestSize &&
2276 MaxRequestSize > 0)
2277 {
2278 /*
2279 * Request is too big; remove it and send an error...
2280 */
2281
ef416fc2 2282 unlink(con->filename);
2283 cupsdClearString(&con->filename);
2284
2285 if (con->request)
2286 {
2287 /*
2288 * Delete any IPP request data...
2289 */
2290
2291 ippDelete(con->request);
2292 con->request = NULL;
2293 }
2294
5bd77a73 2295 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2296 {
2297 cupsdCloseClient(con);
2298 return;
2299 }
ef416fc2 2300 }
f8b3a85b
MS		 2301 else if (filestats.st_size == 0)
2302 {
2303 /*
2304 * Don't allow empty file...
2305 */
2306
2307 unlink(con->filename);
2308 cupsdClearString(&con->filename);
2309 }
ef416fc2 2310
2311 if (con->command)
2312 {
2313 if (!cupsdSendCommand(con, con->command, con->options, 0))
2314 {
5bd77a73 2315 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 2316 {
2317 cupsdCloseClient(con);
2318 return;
2319 }
ef416fc2 2320 }
2321 else
2322 cupsdLogRequest(con, HTTP_OK);
2323 }
2324 }
2325
2326 if (con->request)
f7deaa1a 2327 {
2328 cupsdProcessIPPRequest(con);
bc44d920 2329
2330 if (con->filename)
2331 {
bc44d920 2332 unlink(con->filename);
2333 cupsdClearString(&con->filename);
2334 }
2335
f7deaa1a 2336 return;
2337 }
ef416fc2 2338 }
2339 break;
2340
2341 default :
2342 break; /* Anti-compiler-warning-code */
2343 }
2344
cb7f98ee 2345 if (con->http.state == HTTP_STATE_WAITING)
3dfe78b3
MS		 2346 {
2347 if (!con->http.keep_alive)
f11a948a
MS		 2348 {
2349 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2350 "[Client %d] Closing because Keep-Alive disabled",
f11a948a 2351 con->http.fd);
3dfe78b3 2352 cupsdCloseClient(con);
f11a948a 2353 }
3dfe78b3
MS		 2354 else
2355 {
2356 cupsArrayRemove(ActiveClients, con);
2357 cupsdSetBusyState();
2358 }
2359 }
ef416fc2 2360}
2361
2362
2363/*
2364 * 'cupsdSendCommand()' - Send output from a command via HTTP.
2365 */
2366
2367int /* O - 1 on success, 0 on failure */
2368cupsdSendCommand(
2369 cupsd_client_t *con, /* I - Client connection */
2370 char *command, /* I - Command to run */
2371 char *options, /* I - Command-line options */
2372 int root) /* I - Run as root? */
2373{
2374 int fd; /* Standard input file descriptor */
2375
2376
2377 if (con->filename)
ed486911 2378 {
ef416fc2 2379 fd = open(con->filename, O_RDONLY);
ef416fc2 2380
ed486911 2381 if (fd < 0)
2382 {
2383 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c 2384 "[Client %d] Unable to open \"%s\" for reading: %s",
ed486911 2385 con->http.fd, con->filename ? con->filename : "/dev/null",
2386 strerror(errno));
2387 return (0);
2388 }
ef416fc2 2389
ed486911 2390 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
2391 }
2392 else
2393 fd = -1;
ef416fc2 2394
2395 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
2396
ed486911 2397 if (fd >= 0)
2398 close(fd);
ef416fc2 2399
85dda01c
MS		 2400 cupsdLogMessage(CUPSD_LOG_INFO, "[Client %d] Started \"%s\" (pid=%d)",
2401 con->http.fd, command, con->pipe_pid);
ef416fc2 2402
85dda01c
MS		 2403 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] file=%d", con->http.fd,
2404 con->file);
ef416fc2 2405
2406 if (con->pipe_pid == 0)
2407 return (0);
2408
2409 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2410
f899b121 2411 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
ef416fc2 2412
1bc82dd9
MS		 2413 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Waiting for CGI data.",
2414 con->http.fd);
2415
ef416fc2 2416 con->sent_header = 0;
2417 con->file_ready = 0;
2418 con->got_fields = 0;
68b10830 2419 con->header_used = 0;
ef416fc2 2420
2421 return (1);
2422}
2423
2424
2425/*
2426 * 'cupsdSendError()' - Send an error message via HTTP.
2427 */
2428
2429int /* O - 1 if successful, 0 otherwise */
2430cupsdSendError(cupsd_client_t *con, /* I - Connection */
f899b121 2431 http_status_t code, /* I - Error code */
2432 int auth_type)/* I - Authentication type */
ef416fc2 2433{
b9faaae1 2434 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c 2435 "[Client %d] cupsdSendError code=%d, auth_type=%d",
b9faaae1
MS		 2436 con->http.fd, code, auth_type);
2437
4744bd90 2438#ifdef HAVE_SSL
2439 /*
2440 * Force client to upgrade for authentication if that is how the
2441 * server is configured...
2442 */
2443
2444 if (code == HTTP_UNAUTHORIZED &&
2445 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
88f9aafc 2446 _cups_strcasecmp(con->http.hostname, "localhost") &&
4744bd90 2447 !con->http.tls)
2448 {
4744bd90 2449 code = HTTP_UPGRADE_REQUIRED;
2450 }
2451#endif /* HAVE_SSL */
2452
ef416fc2 2453 /*
2454 * Put the request in the access_log file...
2455 */
2456
2457 cupsdLogRequest(con, code);
2458
ef416fc2 2459 /*
2460 * To work around bugs in some proxies, don't use Keep-Alive for some
2461 * error messages...
f7deaa1a 2462 *
2463 * Kerberos authentication doesn't work without Keep-Alive, so
2464 * never disable it in that case.
ef416fc2 2465 */
2466
5bd77a73 2467 if (code >= HTTP_BAD_REQUEST && con->http.auth_type != CUPSD_AUTH_NEGOTIATE)
ef416fc2 2468 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
2469
2470 /*
2471 * Send an error message back to the client. If the error code is a
2472 * 400 or 500 series, make sure the message contains some text, too!
2473 */
2474
f899b121 2475 if (!cupsdSendHeader(con, code, NULL, auth_type))
ef416fc2 2476 return (0);
2477
2478#ifdef HAVE_SSL
2479 if (code == HTTP_UPGRADE_REQUIRED)
2480 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
2481 return (0);
2482
a469f8a5 2483 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n") < 0)
ef416fc2 2484 return (0);
2485#endif /* HAVE_SSL */
2486
f7deaa1a 2487 if (con->http.version >= HTTP_1_1 &&
2488 con->http.keep_alive == HTTP_KEEPALIVE_OFF)
ef416fc2 2489 {
2490 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
2491 return (0);
2492 }
2493
2494 if (code >= HTTP_BAD_REQUEST)
2495 {
2496 /*
2497 * Send a human-readable error message.
2498 */
2499
80ca4592 2500 char message[4096], /* Message for user */
2501 urltext[1024], /* URL redirection text */
2502 redirect[1024]; /* Redirection link */
ef416fc2 2503 const char *text; /* Status-specific text */
2504
80ca4592 2505
2506 redirect[0] = '\0';
2507
ef416fc2 2508 if (code == HTTP_UNAUTHORIZED)
2509 text = _cupsLangString(con->language,
2510 _("Enter your username and password or the "
2511 "root username and password to access this "
f7deaa1a 2512 "page. If you are using Kerberos authentication, "
2513 "make sure you have a valid Kerberos ticket."));
ef416fc2 2514 else if (code == HTTP_UPGRADE_REQUIRED)
80ca4592 2515 {
2516 text = urltext;
2517
2518 snprintf(urltext, sizeof(urltext),
2519 _cupsLangString(con->language,
2520 _("You must access this page using the URL "
2521 "<A HREF=\"https://%s:%d%s\">"
2522 "https://%s:%d%s</A>.")),
2523 con->servername, con->serverport, con->uri,
2524 con->servername, con->serverport, con->uri);
2525
2526 snprintf(redirect, sizeof(redirect),
b86bc4cf 2527 "<META HTTP-EQUIV=\"Refresh\" "
2528 "CONTENT=\"3;URL=https://%s:%d%s\">\n",
80ca4592 2529 con->servername, con->serverport, con->uri);
2530 }
229681c1
MS		 2531 else if (code == HTTP_WEBIF_DISABLED)
2532 text = _cupsLangString(con->language,
2533 _("The web interface is currently disabled. Run "
2534 "\"cupsctl WebInterface=yes\" to enable it."));
ef416fc2 2535 else
2536 text = "";
2537
2538 snprintf(message, sizeof(message),
745129be
MS		 2539 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" "
2540 "\"http://www.w3.org/TR/html4/loose.dtd\">\n"
ef416fc2 2541 "<HTML>\n"
2542 "<HEAD>\n"
2543 "\t<META HTTP-EQUIV=\"Content-Type\" "
2544 "CONTENT=\"text/html; charset=utf-8\">\n"
229681c1 2545 "\t<TITLE>%s - " CUPS_SVERSION "</TITLE>\n"
ef416fc2 2546 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2547 "HREF=\"/cups.css\">\n"
80ca4592 2548 "%s"
ef416fc2 2549 "</HEAD>\n"
2550 "<BODY>\n"
229681c1 2551 "<H1>%s</H1>\n"
ef416fc2 2552 "<P>%s</P>\n"
2553 "</BODY>\n"
2554 "</HTML>\n",
229681c1 2555 httpStatus(code), redirect, httpStatus(code), text);
ef416fc2 2556
2557 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2558 return (0);
2559 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2560 (int)strlen(message)) < 0)
2561 return (0);
2562 if (httpPrintf(HTTP(con), "\r\n") < 0)
2563 return (0);
2564 if (httpPrintf(HTTP(con), "%s", message) < 0)
2565 return (0);
2566 }
2567 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2568 return (0);
2569
07725fee 2570 if (cupsdFlushHeader(con) < 0)
2571 return (0);
d09495fa 2572
a469f8a5
MS		 2573 con->http.state = HTTP_STATE_WAITING;
2574
2575 DEBUG_puts("cupsdSendError: Set state to HTTP_STATE_WAITING.");
ef416fc2 2576
2577 return (1);
2578}
2579
2580
ef416fc2 2581/*
2582 * 'cupsdSendHeader()' - Send an HTTP request.
2583 */
2584
2585int /* O - 1 on success, 0 on failure */
f899b121 2586cupsdSendHeader(
2587 cupsd_client_t *con, /* I - Client to send to */
2588 http_status_t code, /* I - HTTP status code */
2589 char *type, /* I - MIME type of document */
2590 int auth_type) /* I - Type of authentication */
ef416fc2 2591{
5a738aea 2592 char auth_str[1024]; /* Authorization string */
f7deaa1a 2593
2594
4744bd90 2595 /*
2596 * Send the HTTP status header...
2597 */
2598
b423cd4c 2599 if (code == HTTP_CONTINUE)
2600 {
4744bd90 2601 /*
2602 * 100-continue doesn't send any headers...
2603 */
2604
07725fee 2605 return (httpPrintf(HTTP(con), "HTTP/%d.%d 100 Continue\r\n\r\n",
2606 con->http.version / 100, con->http.version % 100) > 0);
b423cd4c 2607 }
229681c1
MS		 2608 else if (code == HTTP_WEBIF_DISABLED)
2609 {
2610 /*
2611 * Treat our special "web interface is disabled" status as "200 OK" for web
2612 * browsers.
2613 */
2614
2615 code = HTTP_OK;
2616 }
b423cd4c 2617
07725fee 2618 httpFlushWrite(HTTP(con));
2619
cb7f98ee 2620 con->http.data_encoding = HTTP_ENCODING_FIELDS;
07725fee 2621
2622 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2623 con->http.version % 100, code, httpStatus(code)) < 0)
2624 return (0);
ef416fc2 2625 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2626 return (0);
2627 if (ServerHeader)
2628 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2629 return (0);
2630 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2631 {
2632 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2633 return (0);
2634 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2635 KeepAliveTimeout) < 0)
2636 return (0);
2637 }
2638 if (code == HTTP_METHOD_NOT_ALLOWED)
e6013cfa 2639 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n") < 0)
ef416fc2 2640 return (0);
2641
2642 if (code == HTTP_UNAUTHORIZED)
2643 {
5bd77a73 2644 if (auth_type == CUPSD_AUTH_NONE)
f899b121 2645 {
5bd77a73 2646 if (!con->best || con->best->type <= CUPSD_AUTH_NONE)
dcb445bc 2647 auth_type = cupsdDefaultAuthType();
f899b121 2648 else
2649 auth_type = con->best->type;
2650 }
f7deaa1a 2651
2652 auth_str[0] = '\0';
2653
5bd77a73 2654 if (auth_type == CUPSD_AUTH_BASIC || auth_type == CUPSD_AUTH_BASICDIGEST)
f7deaa1a 2655 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
5bd77a73 2656 else if (auth_type == CUPSD_AUTH_DIGEST)
f7deaa1a 2657 snprintf(auth_str, sizeof(auth_str), "Digest realm=\"CUPS\", nonce=\"%s\"",
2658 con->http.hostname);
2659#ifdef HAVE_GSSAPI
eac3a0a0 2660 else if (auth_type == CUPSD_AUTH_NEGOTIATE)
6961465f
MS		 2661 {
2662# ifdef AF_LOCAL
2663 if (_httpAddrFamily(con->http.hostaddr) == AF_LOCAL)
2664 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
2665 else
2666# endif /* AF_LOCAL */
f7deaa1a 2667 strlcpy(auth_str, "Negotiate", sizeof(auth_str));
6961465f 2668 }
f7deaa1a 2669#endif /* HAVE_GSSAPI */
2670
e07d4801 2671 if (con->best && auth_type != CUPSD_AUTH_NEGOTIATE &&
88f9aafc 2672 !_cups_strcasecmp(con->http.hostname, "localhost"))
ef416fc2 2673 {
e07d4801
MS		 2674 /*
2675 * Add a "trc" (try root certification) parameter for local non-Kerberos
2676 * requests when the request requires system group membership - then the
2677 * client knows the root certificate can/should be used.
2678 *
f3c17241 2679 * Also, for OS X we also look for @AUTHKEY and add an "authkey"
e07d4801
MS		 2680 * parameter as needed...
2681 */
2682
10d09e33
MS		 2683 char *name, /* Current user name */
2684 *auth_key; /* Auth key buffer */
f7deaa1a 2685 size_t auth_size; /* Size of remaining buffer */
2686
f7deaa1a 2687 auth_key = auth_str + strlen(auth_str);
2688 auth_size = sizeof(auth_str) - (auth_key - auth_str);
2689
10d09e33
MS		 2690 for (name = (char *)cupsArrayFirst(con->best->names);
2691 name;
2692 name = (char *)cupsArrayNext(con->best->names))
f7deaa1a 2693 {
e07d4801 2694#ifdef HAVE_AUTHORIZATION_H
88f9aafc 2695 if (!_cups_strncasecmp(name, "@AUTHKEY(", 9))
f7deaa1a 2696 {
10d09e33 2697 snprintf(auth_key, auth_size, ", authkey=\"%s\"", name + 9);
f7deaa1a 2698 /* end parenthesis is stripped in conf.c */
2699 break;
2700 }
e07d4801
MS		 2701 else
2702#endif /* HAVE_AUTHORIZATION_H */
88f9aafc 2703 if (!_cups_strcasecmp(name, "@SYSTEM"))
f7deaa1a 2704 {
e07d4801
MS		 2705#ifdef HAVE_AUTHORIZATION_H
2706 if (SystemGroupAuthKey)
2707 snprintf(auth_key, auth_size,
07ed0e9a 2708 ", authkey=\"%s\"",
e07d4801
MS		 2709 SystemGroupAuthKey);
2710 else
2711#else
f11a948a 2712 strlcpy(auth_key, ", trc=\"y\"", auth_size);
e07d4801 2713#endif /* HAVE_AUTHORIZATION_H */
f7deaa1a 2714 break;
2715 }
2716 }
ef416fc2 2717 }
f7deaa1a 2718
bc44d920 2719 if (auth_str[0])
2720 {
68b10830 2721 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2722 "[Client %d] WWW-Authenticate: %s", con->http.fd,
bc44d920 2723 auth_str);
2724
2725 if (httpPrintf(HTTP(con), "WWW-Authenticate: %s\r\n", auth_str) < 0)
2726 return (0);
2727 }
ef416fc2 2728 }
2729
e1d6a774 2730 if (con->language && strcmp(con->language->language, "C"))
ef416fc2 2731 {
2732 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2733 con->language->language) < 0)
2734 return (0);
2735 }
2736
e1d6a774 2737 if (type)
ef416fc2 2738 {
2739 if (!strcmp(type, "text/html"))
2740 {
2741 if (httpPrintf(HTTP(con),
2742 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2743 return (0);
2744 }
2745 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2746 return (0);
2747 }
2748
2749 return (1);
2750}
2751
2752
2753/*
2754 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2755 */
2756
2757void
2758cupsdUpdateCGI(void)
2759{
2760 char *ptr, /* Pointer to end of line in buffer */
2761 message[1024]; /* Pointer to message text */
2762 int loglevel; /* Log level for message */
2763
2764
2765 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2766 message, sizeof(message))) != NULL)
f0ab5bff
MS		 2767 {
2768 if (loglevel == CUPSD_LOG_INFO)
2769 cupsdLogMessage(CUPSD_LOG_INFO, "%s", message);
2770
ef416fc2 2771 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2772 break;
f0ab5bff 2773 }
ef416fc2 2774
d09495fa 2775 if (ptr == NULL && !CGIStatusBuffer->bufused)
ef416fc2 2776 {
2777 /*
2778 * Fatal error on pipe - should never happen!
2779 */
2780
2781 cupsdLogMessage(CUPSD_LOG_CRIT,
2782 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2783 strerror(errno));
2784 }
2785}
2786
2787
2788/*
2789 * 'cupsdWriteClient()' - Write data to a client as needed.
2790 */
2791
f7deaa1a 2792void
ef416fc2 2793cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2794{
68b10830
MS		 2795 int bytes, /* Number of bytes written */
2796 field_col; /* Current column */
2797 char *bufptr, /* Pointer into buffer */
2798 *bufend; /* Pointer to end of buffer */
ef416fc2 2799 ipp_state_t ipp_state; /* IPP state value */
2800
2801
f2d18633 2802 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c
MS		 2803 "[Client %d] cupsdWriteClient "
2804 "error=%d, "
2805 "used=%d, "
2806 "state=%s, "
cb7f98ee 2807 "data_encoding=HTTP_ENCODING_%s, "
85dda01c
MS		 2808 "data_remaining=" CUPS_LLFMT ", "
2809 "response=%p(%s), "
2810 "pipe_pid=%d, "
2811 "file=%d",
2812 con->http.fd, con->http.error, con->http.used,
a469f8a5 2813 http_states[con->http.state + 1],
cb7f98ee 2814 con->http.data_encoding == HTTP_ENCODING_CHUNKED ?
85dda01c
MS		 2815 "CHUNKED" : "LENGTH",
2816 CUPS_LLCAST con->http.data_remaining,
2817 con->response,
2818 con->response ? ipp_states[con->response->state] : "",
2819 con->pipe_pid, con->file);
ef416fc2 2820
cb7f98ee
MS		 2821 if (con->http.state != HTTP_STATE_GET_SEND &&
2822 con->http.state != HTTP_STATE_POST_SEND)
8b116e60
MS		 2823 {
2824 /*
2825 * If we get called in the wrong state, then something went wrong with the
2826 * connection and we need to shut it down...
2827 */
2828
f11a948a 2829 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2830 "[Client %d] Closing on unexpected HTTP state %s.",
a469f8a5 2831 con->http.fd, http_states[con->http.state + 1]);
8b116e60 2832 cupsdCloseClient(con);
f7deaa1a 2833 return;
8b116e60 2834 }
f7deaa1a 2835
2836 if (con->pipe_pid)
2837 {
2838 /*
2839 * Make sure we select on the CGI output...
2840 */
2841
f899b121 2842 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
f7deaa1a 2843
1bc82dd9
MS		 2844 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Waiting for CGI data.",
2845 con->http.fd);
2846
f7deaa1a 2847 if (!con->file_ready)
2848 {
2849 /*
2850 * Try again later when there is CGI output available...
2851 */
2852
2853 cupsdRemoveSelect(con->http.fd);
2854 return;
2855 }
2856
2857 con->file_ready = 0;
2858 }
ef416fc2 2859
71f63681
MS		 2860 bytes = (ssize_t)(sizeof(con->header) - (size_t)con->header_used);
2861
2862 if (!con->pipe_pid && bytes > con->http.data_remaining)
2863 {
2864 /*
2865 * Limit GET bytes to original size of file (STR #3265)...
2866 */
2867
2868 bytes = (ssize_t)con->http.data_remaining;
2869 }
2870
b94498cf 2871 if (con->response && con->response->state != IPP_DATA)
ef416fc2 2872 {
94436c5a
MS		 2873 int wused = con->http.wused; /* Previous write buffer use */
2874
2875 do
2876 {
2877 /*
2878 * Write a single attribute or the IPP message header...
2879 */
2880
21f36711 2881 ipp_state = ippWrite(HTTP(con), con->response);
94436c5a
MS		 2882
2883 /*
2884 * If the write buffer has been flushed, stop buffering up attributes...
2885 */
2886
2887 if (con->http.wused <= wused)
2888 break;
2889 }
2890 while (ipp_state != IPP_STATE_DATA && ipp_state != IPP_STATE_ERROR);
2891
f2d18633 2892 cupsdLogMessage(CUPSD_LOG_DEBUG,
21f36711
MS		 2893 "[Client %d] Writing IPP response, ipp_state=%s, old "
2894 "wused=%d, new wused=%d", con->http.fd,
2895 ipp_state == IPP_STATE_ERROR ? "ERROR" :
2896 ipp_state == IPP_STATE_IDLE ? "IDLE" :
2897 ipp_state == IPP_STATE_HEADER ? "HEADER" :
2898 ipp_state == IPP_STATE_ATTRIBUTE ? "ATTRIBUTE" : "DATA",
2899 wused, con->http.wused);
f2d18633 2900
94436c5a
MS		 2901 if (con->http.wused > 0)
2902 httpFlushWrite(HTTP(con));
2903
2904 bytes = ipp_state != IPP_STATE_ERROR &&
2905 (con->file >= 0 || ipp_state != IPP_STATE_DATA);
21f36711
MS		 2906
2907 cupsdLogMessage(CUPSD_LOG_DEBUG,
2908 "[Client %d] bytes=%d, http_state=%d, "
2909 "data_remaining=" CUPS_LLFMT,
2910 con->http.fd, (int)bytes, con->http.state,
2911 CUPS_LLCAST con->http.data_remaining);
ef416fc2 2912 }
71f63681 2913 else if ((bytes = read(con->file, con->header + con->header_used, (size_t)bytes)) > 0)
ef416fc2 2914 {
68b10830
MS		 2915 con->header_used += bytes;
2916
ef416fc2 2917 if (con->pipe_pid && !con->got_fields)
2918 {
2919 /*
2920 * Inspect the data for Content-Type and other fields.
2921 */
2922
68b10830
MS		 2923 for (bufptr = con->header, bufend = con->header + con->header_used,
2924 field_col = 0;
2925 !con->got_fields && bufptr < bufend;
2926 bufptr ++)
d1c13e16 2927 {
ef416fc2 2928 if (*bufptr == '\n')
2929 {
2930 /*
2931 * Send line to client...
2932 */
2933
68b10830 2934 if (bufptr > con->header && bufptr[-1] == '\r')
ef416fc2 2935 bufptr[-1] = '\0';
2936 *bufptr++ = '\0';
2937
68b10830 2938 cupsdLogMessage(CUPSD_LOG_DEBUG, "Script header: %s", con->header);
ef416fc2 2939
2940 if (!con->sent_header)
2941 {
2942 /*
2943 * Handle redirection and CGI status codes...
2944 */
2945
88f9aafc 2946 if (!_cups_strncasecmp(con->header, "Location:", 9))
d6ae789d 2947 {
321d8d57
MS		 2948 if (!cupsdSendHeader(con, HTTP_SEE_OTHER, NULL, CUPSD_AUTH_NONE))
2949 {
2950 cupsdCloseClient(con);
2951 return;
2952 }
2953
07725fee 2954 con->sent_header = 2;
2955
d6ae789d 2956 if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
f7deaa1a 2957 return;
d6ae789d 2958 }
88f9aafc 2959 else if (!_cups_strncasecmp(con->header, "Status:", 7))
07725fee 2960 {
68b10830
MS		 2961 cupsdSendError(con, (http_status_t)atoi(con->header + 7),
2962 CUPSD_AUTH_NONE);
07725fee 2963 con->sent_header = 2;
2964 }
ef416fc2 2965 else
4744bd90 2966 {
321d8d57
MS		 2967 if (!cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE))
2968 {
2969 cupsdCloseClient(con);
2970 return;
2971 }
2972
07725fee 2973 con->sent_header = 1;
ef416fc2 2974
4744bd90 2975 if (con->http.version == HTTP_1_1)
2976 {
4744bd90 2977 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
f7deaa1a 2978 return;
4744bd90 2979 }
2980 }
ef416fc2 2981 }
2982
88f9aafc 2983 if (_cups_strncasecmp(con->header, "Status:", 7))
68b10830 2984 httpPrintf(HTTP(con), "%s\r\n", con->header);
ef416fc2 2985
ef416fc2 2986 /*
2987 * Update buffer...
2988 */
2989
68b10830 2990 con->header_used -= bufptr - con->header;
d1c13e16 2991
68b10830
MS		 2992 if (con->header_used > 0)
2993 memmove(con->header, bufptr, con->header_used);
d1c13e16 2994
68b10830 2995 bufptr = con->header - 1;
ef416fc2 2996
2997 /*
2998 * See if the line was empty...
2999 */
3000
68b10830 3001 if (field_col == 0)
d09495fa 3002 {
ef416fc2 3003 con->got_fields = 1;
d09495fa 3004
07725fee 3005 if (cupsdFlushHeader(con) < 0)
3006 {
3007 cupsdCloseClient(con);
f7deaa1a 3008 return;
07725fee 3009 }
d09495fa 3010
3011 if (con->http.version == HTTP_1_1)
cb7f98ee 3012 con->http.data_encoding = HTTP_ENCODING_CHUNKED;
d09495fa 3013 }
ef416fc2 3014 else
68b10830 3015 field_col = 0;
ef416fc2 3016 }
3017 else if (*bufptr != '\r')
68b10830 3018 field_col ++;
d1c13e16 3019 }
ef416fc2 3020
68b10830 3021 if (!con->got_fields)
47879b8b 3022 {
ef416fc2 3023 con->http.activity = time(NULL);
47879b8b
MS		 3024 return;
3025 }
ef416fc2 3026 }
3027
68b10830 3028 if (con->header_used > 0)
ef416fc2 3029 {
68b10830 3030 if (httpWrite2(HTTP(con), con->header, con->header_used) < 0)
4744bd90 3031 {
f11a948a 3032 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 3033 "[Client %d] Closing for error %d (%s)",
f11a948a
MS		 3034 con->http.fd, con->http.error,
3035 strerror(con->http.error));
4744bd90 3036 cupsdCloseClient(con);
f7deaa1a 3037 return;
4744bd90 3038 }
ef416fc2 3039
cb7f98ee 3040 if (con->http.data_encoding == HTTP_ENCODING_CHUNKED)
01ce6322 3041 httpFlushWrite(HTTP(con));
ae71f5de 3042
68b10830 3043 con->bytes += con->header_used;
ef416fc2 3044
cb7f98ee 3045 if (con->http.state == HTTP_STATE_WAITING)
4744bd90 3046 bytes = 0;
68b10830
MS		 3047 else
3048 bytes = con->header_used;
3049
3050 con->header_used = 0;
4744bd90 3051 }
ef416fc2 3052 }
3053
8b116e60 3054 if (bytes <= 0 ||
21f36711
MS		 3055 (con->http.state != HTTP_STATE_GET_SEND &&
3056 con->http.state != HTTP_STATE_POST_SEND))
ef416fc2 3057 {
38e73f87 3058 if (!con->sent_header && con->pipe_pid)
94da7e34
MS		 3059 cupsdSendError(con, HTTP_SERVER_ERROR, CUPSD_AUTH_NONE);
3060 else
3061 {
3062 cupsdLogRequest(con, HTTP_OK);
ef416fc2 3063
94da7e34 3064 httpFlushWrite(HTTP(con));
ef416fc2 3065
21f36711
MS		 3066 if (con->http.data_encoding == HTTP_ENCODING_CHUNKED &&
3067 con->sent_header == 1)
ef416fc2 3068 {
94da7e34
MS		 3069 if (httpWrite2(HTTP(con), "", 0) < 0)
3070 {
f11a948a 3071 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 3072 "[Client %d] Closing for error %d (%s)",
f11a948a
MS		 3073 con->http.fd, con->http.error,
3074 strerror(con->http.error));
94da7e34
MS		 3075 cupsdCloseClient(con);
3076 return;
3077 }
ef416fc2 3078 }
3079 }
3080
cb7f98ee 3081 con->http.state = HTTP_STATE_WAITING;
ef416fc2 3082
f7deaa1a 3083 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 3084
1bc82dd9
MS		 3085 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Waiting for request.",
3086 con->http.fd);
3087
ef416fc2 3088 if (con->file >= 0)
3089 {
f7deaa1a 3090 cupsdRemoveSelect(con->file);
ef416fc2 3091
3092 if (con->pipe_pid)
3093 cupsdEndProcess(con->pipe_pid, 0);
3094
ef416fc2 3095 close(con->file);
3096 con->file = -1;
3097 con->pipe_pid = 0;
3098 }
3099
3100 if (con->filename)
3101 {
ef416fc2 3102 unlink(con->filename);
3103 cupsdClearString(&con->filename);
3104 }
3105
2abf387c 3106 if (con->request)
ef416fc2 3107 {
3108 ippDelete(con->request);
3109 con->request = NULL;
3110 }
3111
2abf387c 3112 if (con->response)
ef416fc2 3113 {
3114 ippDelete(con->response);
3115 con->response = NULL;
3116 }
3117
3118 cupsdClearString(&con->command);
3119 cupsdClearString(&con->options);
b86bc4cf 3120 cupsdClearString(&con->query_string);
ef416fc2 3121
3122 if (!con->http.keep_alive)
3123 {
f11a948a 3124 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 3125 "[Client %d] Closing because Keep-Alive disabled.",
f11a948a 3126 con->http.fd);
ef416fc2 3127 cupsdCloseClient(con);
f7deaa1a 3128 return;
ef416fc2 3129 }
f11a948a
MS		 3130 else
3131 {
3132 cupsArrayRemove(ActiveClients, con);
3133 cupsdSetBusyState();
3134 }
ef416fc2 3135 }
3136
3137 con->http.activity = time(NULL);
f7deaa1a 3138}
ef416fc2 3139
f7deaa1a 3140
e1d6a774 3141/*
3142 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
3143 */
3144
3145static int /* O - 1 if modified since */
3146check_if_modified(
3147 cupsd_client_t *con, /* I - Client connection */
3148 struct stat *filestats) /* I - File information */
3149{
3150 char *ptr; /* Pointer into field */
3151 time_t date; /* Time/date value */
3152 off_t size; /* Size/length value */
3153
3154
3155 size = 0;
3156 date = 0;
3157 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
3158
3159 if (*ptr == '\0')
3160 return (1);
3161
3162 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c 3163 "[Client %d] check_if_modified "
b9faaae1 3164 "filestats=%p(" CUPS_LLFMT ", %d)) If-Modified-Since=\"%s\"",
85dda01c 3165 con->http.fd, filestats, CUPS_LLCAST filestats->st_size,
b9faaae1 3166 (int)filestats->st_mtime, ptr);
e1d6a774 3167
3168 while (*ptr != '\0')
3169 {
3170 while (isspace(*ptr) || *ptr == ';')
3171 ptr ++;
3172
88f9aafc 3173 if (_cups_strncasecmp(ptr, "length=", 7) == 0)
e1d6a774 3174 {
3175 ptr += 7;
3176 size = strtoll(ptr, NULL, 10);
3177
3178 while (isdigit(*ptr))
3179 ptr ++;
3180 }
3181 else if (isalpha(*ptr))
3182 {
3183 date = httpGetDateTime(ptr);
3184 while (*ptr != '\0' && *ptr != ';')
3185 ptr ++;
3186 }
e53920b9 3187 else
3188 ptr ++;
e1d6a774 3189 }
3190
e1d6a774 3191 return ((size != filestats->st_size && size != 0) ||
3192 (date < filestats->st_mtime && date != 0) ||
3193 (size == 0 && date == 0));
3194}
3195
3196
3dfe78b3
MS		 3197/*
3198 * 'compare_clients()' - Compare two client connections.
3199 */
3200
3201static int /* O - Result of comparison */
3202compare_clients(cupsd_client_t *a, /* I - First client */
3203 cupsd_client_t *b, /* I - Second client */
3204 void *data) /* I - User data (not used) */
3205{
3206 (void)data;
3207
3208 if (a == b)
3209 return (0);
3210 else if (a < b)
3211 return (-1);
3212 else
3213 return (1);
3214}
3215
3216
85dda01c
MS		 3217/*
3218 * 'data_ready()' - Check whether data is available from a client.
3219 */
ef416fc2 3220
85dda01c
MS		 3221static int /* O - 1 if data is ready, 0 otherwise */
3222data_ready(cupsd_client_t *con) /* I - Client */
3223{
3224 if (con->http.used > 0)
3225 return (1);
3226#ifdef HAVE_SSL
3227 else if (con->http.tls)
e1d6a774 3228 {
85dda01c
MS		 3229# ifdef HAVE_LIBSSL
3230 if (SSL_pending((SSL *)(con->http.tls)))
3231 return (1);
3232# elif defined(HAVE_GNUTLS)
3233 if (gnutls_record_check_pending(con->http.tls))
3234 return (1);
3235# elif defined(HAVE_CDSASSL)
3236 size_t bytes; /* Bytes that are available */
ef416fc2 3237
85dda01c
MS		 3238 if (!SSLGetBufferedReadSize(con->http.tls, &bytes) && bytes > 0)
3239 return (1);
3240# endif /* HAVE_LIBSSL */
e1d6a774 3241 }
85dda01c 3242#endif /* HAVE_SSL */
ef416fc2 3243
85dda01c
MS		 3244 return (0);
3245}
ef416fc2 3246
ef416fc2 3247
ef416fc2 3248/*
3249 * 'get_file()' - Get a filename and state info.
3250 */
3251
3252static char * /* O - Real filename */
3253get_file(cupsd_client_t *con, /* I - Client connection */
3254 struct stat *filestats, /* O - File information */
3255 char *filename, /* IO - Filename buffer */
3256 int len) /* I - Buffer length */
3257{
3258 int status; /* Status of filesystem calls */
3259 char *ptr; /* Pointer info filename */
3260 int plen; /* Remaining length after pointer */
db1f069b 3261 char language[7]; /* Language subdirectory, if any */
ef416fc2 3262
3263
3264 /*
f7deaa1a 3265 * Figure out the real filename...
ef416fc2 3266 */
3267
db1f069b
MS		 3268 language[0] = '\0';
3269
7cf5915e 3270 if (!strncmp(con->uri, "/ppd/", 5) && !strchr(con->uri + 5, '/'))
ef416fc2 3271 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
7cf5915e
MS		 3272 else if (!strncmp(con->uri, "/icons/", 7) && !strchr(con->uri + 7, '/'))
3273 {
3274 snprintf(filename, len, "%s/%s", CacheDir, con->uri + 7);
3275 if (access(filename, F_OK) < 0)
3276 snprintf(filename, len, "%s/images/generic.png", DocumentRoot);
3277 }
f7deaa1a 3278 else if (!strncmp(con->uri, "/rss/", 5) && !strchr(con->uri + 5, '/'))
3279 snprintf(filename, len, "%s/rss/%s", CacheDir, con->uri + 5);
ef416fc2 3280 else if (!strncmp(con->uri, "/admin/conf/", 12))
3281 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
3282 else if (!strncmp(con->uri, "/admin/log/", 11))
3283 {
2e4ff8af 3284 if (!strncmp(con->uri + 11, "access_log", 10) && AccessLog[0] == '/')
ef416fc2 3285 strlcpy(filename, AccessLog, len);
2e4ff8af 3286 else if (!strncmp(con->uri + 11, "error_log", 9) && ErrorLog[0] == '/')
ef416fc2 3287 strlcpy(filename, ErrorLog, len);
2e4ff8af 3288 else if (!strncmp(con->uri + 11, "page_log", 8) && PageLog[0] == '/')
ef416fc2 3289 strlcpy(filename, PageLog, len);
3290 else
3291 return (NULL);
3292 }
d6ae789d 3293 else if (con->language)
db1f069b
MS		 3294 {
3295 snprintf(language, sizeof(language), "/%s", con->language->language);
3296 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
3297 }
ef416fc2 3298 else
3299 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3300
3301 if ((ptr = strchr(filename, '?')) != NULL)
3302 *ptr = '\0';
3303
3304 /*
3305 * Grab the status for this language; if there isn't a language-specific file
3306 * then fallback to the default one...
3307 */
3308
db1f069b 3309 if ((status = stat(filename, filestats)) != 0 && language[0] &&
7cf5915e 3310 strncmp(con->uri, "/icons/", 7) &&
d6ae789d 3311 strncmp(con->uri, "/ppd/", 5) &&
7cf5915e 3312 strncmp(con->uri, "/rss/", 5) &&
d6ae789d 3313 strncmp(con->uri, "/admin/conf/", 12) &&
3314 strncmp(con->uri, "/admin/log/", 11))
ef416fc2 3315 {
3316 /*
d6ae789d 3317 * Drop the country code...
ef416fc2 3318 */
3319
db1f069b
MS		 3320 language[3] = '\0';
3321 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
d6ae789d 3322
3323 if ((ptr = strchr(filename, '?')) != NULL)
3324 *ptr = '\0';
3325
3326 if ((status = stat(filename, filestats)) != 0)
ef416fc2 3327 {
d6ae789d 3328 /*
3329 * Drop the language prefix and try the root directory...
3330 */
3331
db1f069b 3332 language[0] = '\0';
ef416fc2 3333 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3334
3335 if ((ptr = strchr(filename, '?')) != NULL)
3336 *ptr = '\0';
3337
3338 status = stat(filename, filestats);
3339 }
3340 }
3341
3342 /*
3343 * If we're found a directory, get the index.html file instead...
3344 */
3345
3346 if (!status && S_ISDIR(filestats->st_mode))
3347 {
db1f069b
MS		 3348 /*
3349 * Make sure the URI ends with a slash...
3350 */
ef416fc2 3351
db1f069b
MS		 3352 if (con->uri[strlen(con->uri) - 1] != '/')
3353 strlcat(con->uri, "/", sizeof(con->uri));
ef416fc2 3354
db1f069b
MS		 3355 /*
3356 * Find the directory index file, trying every language...
3357 */
ef416fc2 3358
db1f069b 3359 do
ef416fc2 3360 {
db1f069b
MS		 3361 if (status && language[0])
3362 {
3363 /*
3364 * Try a different language subset...
3365 */
3366
3367 if (language[3])
3368 language[0] = '\0'; /* Strip country code */
3369 else
3370 language[0] = '\0'; /* Strip language */
3371 }
3372
3373 /*
3374 * Look for the index file...
3375 */
3376
3377 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
3378
3379 if ((ptr = strchr(filename, '?')) != NULL)
3380 *ptr = '\0';
3381
3382 ptr = filename + strlen(filename);
3383 plen = len - (ptr - filename);
3384
3385 strlcpy(ptr, "index.html", plen);
ef416fc2 3386 status = stat(filename, filestats);
db1f069b
MS		 3387
3388#ifdef HAVE_JAVA
3389 if (status)
3390 {
3391 strlcpy(ptr, "index.class", plen);
3392 status = stat(filename, filestats);
3393 }
ef416fc2 3394#endif /* HAVE_JAVA */
3395
3396#ifdef HAVE_PERL
db1f069b
MS		 3397 if (status)
3398 {
3399 strlcpy(ptr, "index.pl", plen);
3400 status = stat(filename, filestats);
3401 }
ef416fc2 3402#endif /* HAVE_PERL */
3403
3404#ifdef HAVE_PHP
db1f069b
MS		 3405 if (status)
3406 {
3407 strlcpy(ptr, "index.php", plen);
3408 status = stat(filename, filestats);
3409 }
ef416fc2 3410#endif /* HAVE_PHP */
3411
3412#ifdef HAVE_PYTHON
db1f069b
MS		 3413 if (status)
3414 {
3415 strlcpy(ptr, "index.pyc", plen);
3416 status = stat(filename, filestats);
3417 }
ef416fc2 3418
db1f069b
MS		 3419 if (status)
3420 {
3421 strlcpy(ptr, "index.py", plen);
3422 status = stat(filename, filestats);
3423 }
ef416fc2 3424#endif /* HAVE_PYTHON */
db1f069b
MS		 3425
3426 }
3427 while (status && language[0]);
ef416fc2 3428 }
3429
b9faaae1 3430 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3431 "[Client %d] get_file filestats=%p, filename=%p, len=%d, "
3432 "returning \"%s\".", con->http.fd, filestats, filename, len,
b9faaae1 3433 status ? "(null)" : filename);
ef416fc2 3434
ef416fc2 3435 if (status)
3436 return (NULL);
3437 else
3438 return (filename);
3439}
3440
3441
3442/*
c41769ff 3443 * 'install_cupsd_conf()' - Install a configuration file.
ef416fc2 3444 */
3445
3446static http_status_t /* O - Status */
c41769ff 3447install_cupsd_conf(cupsd_client_t *con) /* I - Connection */
ef416fc2 3448{
321d8d57 3449 char filename[1024]; /* Configuration filename */
ef416fc2 3450 cups_file_t *in, /* Input file */
3451 *out; /* Output file */
321d8d57
MS		 3452 char buffer[16384]; /* Copy buffer */
3453 ssize_t bytes; /* Number of bytes */
ef416fc2 3454
3455
3456 /*
321d8d57 3457 * Open the request file...
ef416fc2 3458 */
3459
321d8d57 3460 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
ef416fc2 3461 {
321d8d57
MS		 3462 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\": %s",
3463 con->filename, strerror(errno));
3464 return (HTTP_SERVER_ERROR);
ef416fc2 3465 }
3466
3467 /*
321d8d57 3468 * Open the new config file...
ef416fc2 3469 */
3470
cb7f98ee 3471 if ((out = cupsdCreateConfFile(ConfigurationFile, ConfigFilePerm)) == NULL)
ef416fc2 3472 {
3473 cupsFileClose(in);
ef416fc2 3474 return (HTTP_SERVER_ERROR);
3475 }
3476
cb7f98ee
MS		 3477 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...",
3478 ConfigurationFile);
ef416fc2 3479
3480 /*
3481 * Copy from the request to the new config file...
3482 */
3483
3484 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
3485 if (cupsFileWrite(out, buffer, bytes) < bytes)
3486 {
3487 cupsdLogMessage(CUPSD_LOG_ERROR,
321d8d57 3488 "Unable to copy to config file \"%s\": %s",
cb7f98ee 3489 ConfigurationFile, strerror(errno));
ef416fc2 3490
3491 cupsFileClose(in);
3492 cupsFileClose(out);
321d8d57 3493
cb7f98ee
MS		 3494 snprintf(filename, sizeof(filename), "%s.N", ConfigurationFile);
3495 cupsdUnlinkOrRemoveFile(filename);
ef416fc2 3496
3497 return (HTTP_SERVER_ERROR);
3498 }
3499
3500 /*
3501 * Close the files...
3502 */
3503
3504 cupsFileClose(in);
ef416fc2 3505
cb7f98ee 3506 if (cupsdCloseCreatedConfFile(out, ConfigurationFile))
ef416fc2 3507 return (HTTP_SERVER_ERROR);
ef416fc2 3508
3509 /*
3510 * Remove the request file...
3511 */
3512
cb7f98ee 3513 cupsdUnlinkOrRemoveFile(con->filename);
ef416fc2 3514 cupsdClearString(&con->filename);
3515
ef416fc2 3516 /*
c41769ff 3517 * Set the NeedReload flag...
ef416fc2 3518 */
3519
c41769ff 3520 NeedReload = RELOAD_CUPSD;
ef416fc2 3521 ReloadTime = time(NULL);
3522
3523 /*
3524 * Return that the file was created successfully...
3525 */
3526
3527 return (HTTP_CREATED);
3528}
3529
3530
e1d6a774 3531/*
3532 * 'is_cgi()' - Is the resource a CGI script/program?
3533 */
3534
3535static int /* O - 1 = CGI, 0 = file */
3536is_cgi(cupsd_client_t *con, /* I - Client connection */
3537 const char *filename, /* I - Real filename */
3538 struct stat *filestats, /* I - File information */
3539 mime_type_t *type) /* I - MIME type */
3540{
3541 const char *options; /* Options on URL */
3542
3543
e1d6a774 3544 /*
3545 * Get the options, if any...
3546 */
3547
3548 if ((options = strchr(con->uri, '?')) != NULL)
a0f6818e
MS		 3549 {
3550 options ++;
3551 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", options);
3552 }
b86bc4cf 3553
e1d6a774 3554 /*
3555 * Check for known types...
3556 */
3557
88f9aafc 3558 if (!type || _cups_strcasecmp(type->super, "application"))
e1d6a774 3559 {
b9faaae1 3560 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3561 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3562 "type=%s/%s, returning 0", con->http.fd, filename,
3563 filestats, type ? type->super : "unknown",
b9faaae1 3564 type ? type->type : "unknown");
e1d6a774 3565 return (0);
3566 }
3567
88f9aafc 3568 if (!_cups_strcasecmp(type->type, "x-httpd-cgi") &&
e1d6a774 3569 (filestats->st_mode & 0111))
3570 {
3571 /*
3572 * "application/x-httpd-cgi" is a CGI script.
3573 */
3574
3575 cupsdSetString(&con->command, filename);
3576
a0f6818e
MS		 3577 if (options)
3578 cupsdSetStringf(&con->options, " %s", options);
e1d6a774 3579
3580 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3581 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3582 "type=%s/%s, returning 1", con->http.fd, filename,
3583 filestats, type->super, type->type);
e1d6a774 3584 return (1);
3585 }
3586#ifdef HAVE_JAVA
88f9aafc 3587 else if (!_cups_strcasecmp(type->type, "x-httpd-java"))
e1d6a774 3588 {
3589 /*
3590 * "application/x-httpd-java" is a Java servlet.
3591 */
3592
3593 cupsdSetString(&con->command, CUPS_JAVA);
3594
3595 if (options)
b94498cf 3596 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3597 else
b94498cf 3598 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3599
3600 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3601 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3602 "type=%s/%s, returning 1", con->http.fd, filename,
3603 filestats, type->super, type->type);
e1d6a774 3604 return (1);
3605 }
3606#endif /* HAVE_JAVA */
3607#ifdef HAVE_PERL
88f9aafc 3608 else if (!_cups_strcasecmp(type->type, "x-httpd-perl"))
e1d6a774 3609 {
3610 /*
3611 * "application/x-httpd-perl" is a Perl page.
3612 */
3613
3614 cupsdSetString(&con->command, CUPS_PERL);
3615
3616 if (options)
b94498cf 3617 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3618 else
b94498cf 3619 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3620
3621 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3622 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3623 "type=%s/%s, returning 1", con->http.fd, filename,
3624 filestats, type->super, type->type);
e1d6a774 3625 return (1);
3626 }
3627#endif /* HAVE_PERL */
3628#ifdef HAVE_PHP
88f9aafc 3629 else if (!_cups_strcasecmp(type->type, "x-httpd-php"))
e1d6a774 3630 {
3631 /*
3632 * "application/x-httpd-php" is a PHP page.
3633 */
3634
3635 cupsdSetString(&con->command, CUPS_PHP);
3636
3637 if (options)
b94498cf 3638 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3639 else
b94498cf 3640 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3641
3642 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3643 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3644 "type=%s/%s, returning 1", con->http.fd, filename,
3645 filestats, type->super, type->type);
e1d6a774 3646 return (1);
3647 }
3648#endif /* HAVE_PHP */
3649#ifdef HAVE_PYTHON
88f9aafc 3650 else if (!_cups_strcasecmp(type->type, "x-httpd-python"))
e1d6a774 3651 {
3652 /*
3653 * "application/x-httpd-python" is a Python page.
3654 */
3655
3656 cupsdSetString(&con->command, CUPS_PYTHON);
3657
3658 if (options)
b94498cf 3659 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3660 else
b94498cf 3661 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3662
3663 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3664 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3665 "type=%s/%s, returning 1", con->http.fd, filename,
3666 filestats, type->super, type->type);
e1d6a774 3667 return (1);
3668 }
3669#endif /* HAVE_PYTHON */
3670
b9faaae1 3671 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3672 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3673 "type=%s/%s, returning 0", con->http.fd, filename,
3674 filestats, type->super, type->type);
e1d6a774 3675 return (0);
3676}
3677
3678
ef416fc2 3679/*
3680 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3681 */
3682
3683static int /* O - 0 if relative, 1 if absolute */
3684is_path_absolute(const char *path) /* I - Input path */
3685{
3686 /*
3687 * Check for a leading slash...
3688 */
3689
3690 if (path[0] != '/')
3691 return (0);
3692
71f63681
MS		 3693 /*
3694 * Check for "<" or quotes in the path and reject since this is probably
3695 * someone trying to inject HTML...
3696 */
3697
3698 if (strchr(path, '<') != NULL || strchr(path, '\"') != NULL || strchr(path, '\'') != NULL)
3699 return (0);
3700
ef416fc2 3701 /*
3702 * Check for "/.." in the path...
3703 */
3704
3705 while ((path = strstr(path, "/..")) != NULL)
3706 {
3707 if (!path[3] || path[3] == '/')
3708 return (0);
3709
3710 path ++;
3711 }
3712
3713 /*
3714 * If we haven't found any relative paths, return 1 indicating an
3715 * absolute path...
3716 */
3717
3718 return (1);
3719}
3720
3721
3722/*
3723 * 'pipe_command()' - Pipe the output of a command to the remote client.
3724 */
3725
3726static int /* O - Process ID */
3727pipe_command(cupsd_client_t *con, /* I - Client connection */
3728 int infile, /* I - Standard input for command */
3729 int *outfile, /* O - Standard output for command */
3730 char *command, /* I - Command to run */
3731 char *options, /* I - Options for command */
3732 int root) /* I - Run as root? */
3733{
3734 int i; /* Looping var */
3735 int pid; /* Process ID */
b423cd4c 3736 char *commptr, /* Command string pointer */
3737 commch; /* Command string character */
ef416fc2 3738 char *uriptr; /* URI string pointer */
3739 int fds[2]; /* Pipe FDs */
3740 int argc; /* Number of arguments */
3741 int envc; /* Number of environment variables */
3742 char argbuf[10240], /* Argument buffer */
3743 *argv[100], /* Argument strings */
b94498cf 3744 *envp[MAX_ENV + 20]; /* Environment variables */
c7017ecc 3745 char auth_type[256], /* AUTH_TYPE environment variable */
b94498cf 3746 content_length[1024], /* CONTENT_LENGTH environment variable */
ef416fc2 3747 content_type[1024], /* CONTENT_TYPE environment variable */
3748 http_cookie[32768], /* HTTP_COOKIE environment variable */
f7deaa1a 3749 http_referer[1024], /* HTTP_REFERER environment variable */
ef416fc2 3750 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3751 lang[1024], /* LANG environment variable */
b423cd4c 3752 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 3753 remote_addr[1024], /* REMOTE_ADDR environment variable */
3754 remote_host[1024], /* REMOTE_HOST environment variable */
3755 remote_user[1024], /* REMOTE_USER environment variable */
b94498cf 3756 script_filename[1024], /* SCRIPT_FILENAME environment variable */
ef416fc2 3757 script_name[1024], /* SCRIPT_NAME environment variable */
3758 server_name[1024], /* SERVER_NAME environment variable */
3759 server_port[1024]; /* SERVER_PORT environment variable */
7dfedb92 3760 ipp_attribute_t *attr; /* attributes-natural-language attribute */
ef416fc2 3761
3762
3763 /*
3764 * Parse a copy of the options string, which is of the form:
3765 *
b423cd4c 3766 * argument+argument+argument
3767 * ?argument+argument+argument
3768 * param=value&param=value
3769 * ?param=value&param=value
3770 * /name?argument+argument+argument
3771 * /name?param=value&param=value
ef416fc2 3772 *
3773 * If the string contains an "=" character after the initial name,
3774 * then we treat it as a HTTP GET form request and make a copy of
3775 * the remaining string for the environment variable.
3776 *
3777 * The string is always parsed out as command-line arguments, to
3778 * be consistent with Apache...
3779 */
3780
3781 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3782 "[Client %d] pipe_command infile=%d, outfile=%p, "
3783 "command=\"%s\", options=\"%s\", root=%d",
3784 con->http.fd, infile, outfile, command,
b9faaae1 3785 options ? options : "(null)", root);
ef416fc2 3786
b86bc4cf 3787 argv[0] = command;
ef416fc2 3788
b423cd4c 3789 if (options)
c7017ecc
MS		 3790 {
3791 commptr = options;
3792 if (*commptr == ' ')
3793 commptr ++;
3794 strlcpy(argbuf, commptr, sizeof(argbuf));
3795 }
b423cd4c 3796 else
3797 argbuf[0] = '\0';
3798
3799 if (argbuf[0] == '/')
ef416fc2 3800 {
3801 /*
b423cd4c 3802 * Found some trailing path information, set PATH_INFO...
ef416fc2 3803 */
3804
b423cd4c 3805 if ((commptr = strchr(argbuf, '?')) == NULL)
3806 commptr = argbuf + strlen(argbuf);
ef416fc2 3807
b423cd4c 3808 commch = *commptr;
3809 *commptr = '\0';
3810 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
3811 *commptr = commch;
3812 }
3813 else
3814 {
3815 commptr = argbuf;
3816 path_info[0] = '\0';
b94498cf 3817
3818 if (*commptr == ' ')
3819 commptr ++;
b423cd4c 3820 }
ef416fc2 3821
cb7f98ee 3822 if (*commptr == '?' && con->operation == HTTP_STATE_GET && !con->query_string)
b423cd4c 3823 {
3824 commptr ++;
b86bc4cf 3825 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr);
b423cd4c 3826 }
ef416fc2 3827
b423cd4c 3828 argc = 1;
ef416fc2 3829
b423cd4c 3830 if (*commptr)
3831 {
3832 argv[argc ++] = commptr;
ef416fc2 3833
b423cd4c 3834 for (; *commptr && argc < 99; commptr ++)
3835 {
ef416fc2 3836 /*
b423cd4c 3837 * Break arguments whenever we see a + or space...
ef416fc2 3838 */
3839
b423cd4c 3840 if (*commptr == ' ' || *commptr == '+')
3841 {
3842 while (*commptr == ' ' || *commptr == '+')
3843 *commptr++ = '\0';
ef416fc2 3844
b423cd4c 3845 /*
3846 * If we don't have a blank string, save it as another argument...
3847 */
ef416fc2 3848
b423cd4c 3849 if (*commptr)
3850 {
3851 argv[argc] = commptr;
3852 argc ++;
3853 }
3854 else
3855 break;
3856 }
3857 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
3858 isxdigit(commptr[2] & 255))
3859 {
3860 /*
3861 * Convert the %xx notation to the individual character.
3862 */
ef416fc2 3863
b423cd4c 3864 if (commptr[1] >= '0' && commptr[1] <= '9')
3865 *commptr = (commptr[1] - '0') << 4;
3866 else
3867 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
ef416fc2 3868
b423cd4c 3869 if (commptr[2] >= '0' && commptr[2] <= '9')
3870 *commptr |= commptr[2] - '0';
3871 else
3872 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 3873
b423cd4c 3874 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 3875
b423cd4c 3876 /*
3877 * Check for a %00 and break if that is the case...
3878 */
ef416fc2 3879
b423cd4c 3880 if (!*commptr)
3881 break;
3882 }
ef416fc2 3883 }
3884 }
3885
3886 argv[argc] = NULL;
3887
ef416fc2 3888 /*
3889 * Setup the environment variables as needed...
3890 */
3891
b94498cf 3892 if (con->username[0])
3893 {
c7017ecc 3894 snprintf(auth_type, sizeof(auth_type), "AUTH_TYPE=%s",
b94498cf 3895 httpGetField(HTTP(con), HTTP_FIELD_AUTHORIZATION));
3896
3897 if ((uriptr = strchr(auth_type + 10, ' ')) != NULL)
3898 *uriptr = '\0';
3899 }
3900 else
3901 auth_type[0] = '\0';
3902
7dfedb92
MS		 3903 if (con->request &&
3904 (attr = ippFindAttribute(con->request, "attributes-natural-language",
3905 IPP_TAG_LANGUAGE)) != NULL)
3906 {
3907 switch (strlen(attr->values[0].string.text))
3908 {
3909 default :
3910 /*
3911 * This is an unknown or badly formatted language code; use
3912 * the POSIX locale...
3913 */
3914
5a9febac 3915 strlcpy(lang, "LANG=C", sizeof(lang));
7dfedb92
MS		 3916 break;
3917
3918 case 2 :
3919 /*
3920 * Just the language code (ll)...
3921 */
3922
3923 snprintf(lang, sizeof(lang), "LANG=%s.UTF8",
3924 attr->values[0].string.text);
3925 break;
3926
3927 case 5 :
3928 /*
3929 * Language and country code (ll-cc)...
3930 */
3931
3932 snprintf(lang, sizeof(lang), "LANG=%c%c_%c%c.UTF8",
3933 attr->values[0].string.text[0],
3934 attr->values[0].string.text[1],
3935 toupper(attr->values[0].string.text[3] & 255),
3936 toupper(attr->values[0].string.text[4] & 255));
3937 break;
3938 }
3939 }
3940 else if (con->language)
3941 snprintf(lang, sizeof(lang), "LANG=%s.UTF8", con->language->language);
ef416fc2 3942 else
5a9febac 3943 strlcpy(lang, "LANG=C", sizeof(lang));
ef416fc2 3944
5a9febac 3945 strlcpy(remote_addr, "REMOTE_ADDR=", sizeof(remote_addr));
ef416fc2 3946 httpAddrString(con->http.hostaddr, remote_addr + 12,
3947 sizeof(remote_addr) - 12);
3948
3949 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
3950 con->http.hostname);
3951
3952 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
3953 if ((uriptr = strchr(script_name, '?')) != NULL)
3954 *uriptr = '\0';
3955
b94498cf 3956 snprintf(script_filename, sizeof(script_filename), "SCRIPT_FILENAME=%s%s",
3957 DocumentRoot, script_name + 12);
3958
ef416fc2 3959 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
3960
0268488e
MS		 3961 if (con->http.fields[HTTP_FIELD_HOST][0])
3962 {
3963 char *nameptr; /* Pointer to ":port" */
3964
3965 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3966 con->http.fields[HTTP_FIELD_HOST]);
3967 if ((nameptr = strrchr(server_name, ':')) != NULL && !strchr(nameptr, ']'))
3968 *nameptr = '\0'; /* Strip trailing ":port" */
3969 }
3970 else
3971 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3972 con->servername);
ef416fc2 3973
3974 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
3975
b94498cf 3976 if (auth_type[0])
3977 envp[envc ++] = auth_type;
3978
ef416fc2 3979 envp[envc ++] = lang;
3980 envp[envc ++] = "REDIRECT_STATUS=1";
b94498cf 3981 envp[envc ++] = "GATEWAY_INTERFACE=CGI/1.1";
ef416fc2 3982 envp[envc ++] = server_name;
3983 envp[envc ++] = server_port;
3984 envp[envc ++] = remote_addr;
3985 envp[envc ++] = remote_host;
3986 envp[envc ++] = script_name;
b94498cf 3987 envp[envc ++] = script_filename;
ef416fc2 3988
b423cd4c 3989 if (path_info[0])
3990 envp[envc ++] = path_info;
3991
ef416fc2 3992 if (con->username[0])
3993 {
3994 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
3995
3996 envp[envc ++] = remote_user;
3997 }
3998
3999 if (con->http.version == HTTP_1_1)
4000 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
4001 else if (con->http.version == HTTP_1_0)
4002 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
4003 else
4004 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
4005
4006 if (con->http.cookie)
4007 {
4008 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
4009 con->http.cookie);
4010 envp[envc ++] = http_cookie;
4011 }
4012
4013 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
4014 {
4015 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
4016 con->http.fields[HTTP_FIELD_USER_AGENT]);
4017 envp[envc ++] = http_user_agent;
4018 }
4019
f7deaa1a 4020 if (con->http.fields[HTTP_FIELD_REFERER][0])
4021 {
4022 snprintf(http_referer, sizeof(http_referer), "HTTP_REFERER=%s",
4023 con->http.fields[HTTP_FIELD_REFERER]);
4024 envp[envc ++] = http_referer;
4025 }
4026
cb7f98ee 4027 if (con->operation == HTTP_STATE_GET)
ef416fc2 4028 {
ef416fc2 4029 envp[envc ++] = "REQUEST_METHOD=GET";
4030
b86bc4cf 4031 if (con->query_string)
ef416fc2 4032 {
4033 /*
4034 * Add GET form variables after ?...
4035 */
4036
b86bc4cf 4037 envp[envc ++] = con->query_string;
ef416fc2 4038 }
3dfe78b3
MS		 4039 else
4040 envp[envc ++] = "QUERY_STRING=";
ef416fc2 4041 }
4042 else
4043 {
e1d6a774 4044 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
4045 CUPS_LLCAST con->bytes);
ef416fc2 4046 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
4047 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
4048
4049 envp[envc ++] = "REQUEST_METHOD=POST";
4050 envp[envc ++] = content_length;
4051 envp[envc ++] = content_type;
4052 }
4053
4054 /*
4055 * Tell the CGI if we are using encryption...
4056 */
4057
a74454a7 4058 if (con->http.tls)
ef416fc2 4059 envp[envc ++] = "HTTPS=ON";
4060
4061 /*
4062 * Terminate the environment array...
4063 */
4064
4065 envp[envc] = NULL;
4066
38e73f87 4067 if (LogLevel >= CUPSD_LOG_DEBUG)
ef416fc2 4068 {
4069 for (i = 0; i < argc; i ++)
38e73f87
MS		 4070 cupsdLogMessage(CUPSD_LOG_DEBUG,
4071 "[CGI] argv[%d] = \"%s\"", i, argv[i]);
ef416fc2 4072 for (i = 0; i < envc; i ++)
38e73f87
MS		 4073 cupsdLogMessage(CUPSD_LOG_DEBUG,
4074 "[CGI] envp[%d] = \"%s\"", i, envp[i]);
ef416fc2 4075 }
4076
4077 /*
4078 * Create a pipe for the output...
4079 */
4080
4081 if (cupsdOpenPipe(fds))
4082 {
38e73f87 4083 cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to create pipe for %s - %s",
ef416fc2 4084 argv[0], strerror(errno));
4085 return (0);
4086 }
4087
4088 /*
4089 * Then execute the command...
4090 */
4091
4092 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
38e73f87 4093 -1, -1, root, DefaultProfile, NULL, &pid) < 0)
ef416fc2 4094 {
4095 /*
4096 * Error - can't fork!
4097 */
4098
38e73f87 4099 cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to start %s - %s", argv[0],
ef416fc2 4100 strerror(errno));
4101
4102 cupsdClosePipe(fds);
4103 pid = 0;
4104 }
4105 else
4106 {
4107 /*
4108 * Fork successful - return the PID...
4109 */
4110
4111 if (con->username[0])
0fa6c7fa 4112 cupsdAddCert(pid, con->username, con->type);
ef416fc2 4113
38e73f87 4114 cupsdLogMessage(CUPSD_LOG_DEBUG, "[CGI] Started %s (PID %d)", command, pid);
ef416fc2 4115
4116 *outfile = fds[0];
4117 close(fds[1]);
4118 }
4119
ef416fc2 4120 return (pid);
4121}
4122
4123
e07d4801
MS		 4124/*
4125 * 'valid_host()' - Is the Host: field valid?
4126 */
4127
4128static int /* O - 1 if valid, 0 if not */
4129valid_host(cupsd_client_t *con) /* I - Client connection */
4130{
4131 cupsd_alias_t *a; /* Current alias */
4132 cupsd_netif_t *netif; /* Current network interface */
f2534050
MS		 4133 const char *end; /* End character */
4134 char *ptr; /* Pointer into host value */
e07d4801
MS		 4135
4136
f2534050
MS		 4137 /*
4138 * Copy the Host: header for later use...
4139 */
4140
4141 strlcpy(con->clientname, con->http.fields[HTTP_FIELD_HOST],
4142 sizeof(con->clientname));
4143 if ((ptr = strrchr(con->clientname, ':')) != NULL && !strchr(ptr, ']'))
4144 {
4145 *ptr++ = '\0';
4146 con->clientport = atoi(ptr);
4147 }
4148 else
4149 con->clientport = con->serverport;
4150
4151 /*
4152 * Then validate...
4153 */
e07d4801
MS		 4154
4155 if (httpAddrLocalhost(con->http.hostaddr))
4156 {
4157 /*
4158 * Only allow "localhost" or the equivalent IPv4 or IPv6 numerical
4159 * addresses when accessing CUPS via the loopback interface...
4160 */
4161
f2534050
MS		 4162 return (!_cups_strcasecmp(con->clientname, "localhost") ||
4163 !_cups_strcasecmp(con->clientname, "localhost.") ||
e07d4801 4164#ifdef __linux
f2534050 4165 !_cups_strcasecmp(con->clientname, "localhost.localdomain") ||
e07d4801 4166#endif /* __linux */
f2534050
MS		 4167 !strcmp(con->clientname, "127.0.0.1") ||
4168 !strcmp(con->clientname, "[::1]"));
e07d4801
MS		 4169 }
4170
37e7e6e0 4171#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
e07d4801
MS		 4172 /*
4173 * Check if the hostname is something.local (Bonjour); if so, allow it.
4174 */
4175
f2534050
MS		 4176 if ((end = strrchr(con->clientname, '.')) != NULL && end > con->clientname &&
4177 !end[1])
a29fd7dd
MS		 4178 {
4179 /*
4180 * "." on end, work back to second-to-last "."...
4181 */
f2534050
MS		 4182
4183 for (end --; end > con->clientname && *end != '.'; end --);
a29fd7dd
MS		 4184 }
4185
4186 if (end && (!_cups_strcasecmp(end, ".local") ||
f2534050 4187 !_cups_strcasecmp(end, ".local.")))
e07d4801 4188 return (1);
37e7e6e0 4189#endif /* HAVE_DNSSD || HAVE_AVAHI */
e07d4801
MS		 4190
4191 /*
4192 * Check if the hostname is an IP address...
4193 */
4194
f2534050 4195 if (isdigit(con->clientname[0] & 255) || con->clientname[0] == '[')
e07d4801
MS		 4196 {
4197 /*
4198 * Possible IPv4/IPv6 address...
4199 */
4200
e07d4801
MS		 4201 http_addrlist_t *addrlist; /* List of addresses */
4202
4203
f2534050 4204 if ((addrlist = httpAddrGetList(con->clientname, AF_UNSPEC, NULL)) != NULL)
e07d4801
MS		 4205 {
4206 /*
4207 * Good IPv4/IPv6 address...
4208 */
4209
4210 httpAddrFreeList(addrlist);
4211 return (1);
4212 }
4213 }
4214
4215 /*
4216 * Check for (alias) name matches...
4217 */
4218
4219 for (a = (cupsd_alias_t *)cupsArrayFirst(ServerAlias);
4220 a;
4221 a = (cupsd_alias_t *)cupsArrayNext(ServerAlias))
4222 {
4223 /*
4224 * "ServerAlias *" allows all host values through...
4225 */
4226
4227 if (!strcmp(a->name, "*"))
4228 return (1);
4229
f2534050 4230 if (!_cups_strncasecmp(con->clientname, a->name, a->namelen))
e07d4801
MS		 4231 {
4232 /*
f2534050 4233 * Prefix matches; check the character at the end - it must be "." or nul.
e07d4801
MS		 4234 */
4235
f2534050 4236 end = con->clientname + a->namelen;
e07d4801 4237
f2534050 4238 if (!*end || (*end == '.' && !end[1]))
e07d4801
MS		 4239 return (1);
4240 }
4241 }
4242
37e7e6e0 4243#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
e07d4801
MS		 4244 for (a = (cupsd_alias_t *)cupsArrayFirst(DNSSDAlias);
4245 a;
4246 a = (cupsd_alias_t *)cupsArrayNext(DNSSDAlias))
4247 {
4248 /*
4249 * "ServerAlias *" allows all host values through...
4250 */
4251
4252 if (!strcmp(a->name, "*"))
4253 return (1);
4254
f2534050 4255 if (!_cups_strncasecmp(con->clientname, a->name, a->namelen))
e07d4801
MS		 4256 {
4257 /*
f2534050 4258 * Prefix matches; check the character at the end - it must be "." or nul.
e07d4801
MS		 4259 */
4260
f2534050 4261 end = con->clientname + a->namelen;
e07d4801 4262
f2534050 4263 if (!*end || (*end == '.' && !end[1]))
e07d4801
MS		 4264 return (1);
4265 }
4266 }
37e7e6e0 4267#endif /* HAVE_DNSSD || HAVE_AVAHI */
e07d4801
MS		 4268
4269 /*
4270 * Check for interface hostname matches...
4271 */
4272
4273 for (netif = (cupsd_netif_t *)cupsArrayFirst(NetIFList);
4274 netif;
4275 netif = (cupsd_netif_t *)cupsArrayNext(NetIFList))
4276 {
f2534050 4277 if (!_cups_strncasecmp(con->clientname, netif->hostname, netif->hostlen))
e07d4801
MS		 4278 {
4279 /*
f2534050 4280 * Prefix matches; check the character at the end - it must be "." or nul.
e07d4801
MS		 4281 */
4282
f2534050 4283 end = con->clientname + netif->hostlen;
e07d4801 4284
f2534050 4285 if (!*end || (*end == '.' && !end[1]))
e07d4801
MS		 4286 return (1);
4287 }
4288 }
4289
4290 return (0);
4291}
4292
4293
ef416fc2 4294/*
a74454a7 4295 * 'write_file()' - Send a file via HTTP.
e1d6a774 4296 */
4297
4298static int /* O - 0 on failure, 1 on success */
a74454a7 4299write_file(cupsd_client_t *con, /* I - Client connection */
4300 http_status_t code, /* I - HTTP status */
4301 char *filename, /* I - Filename */
4302 char *type, /* I - File type */
4303 struct stat *filestats) /* O - File information */
e1d6a774 4304{
4305 con->file = open(filename, O_RDONLY);
4306
b9faaae1 4307 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 4308 "[Client %d] write_file code=%d, filename=\"%s\" (%d), "
4309 "type=\"%s\", filestats=%p", con->http.fd,
b9faaae1 4310 code, filename, con->file, type ? type : "(null)", filestats);
e1d6a774 4311
4312 if (con->file < 0)
4313 return (0);
4314
4315 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
4316
4317 con->pipe_pid = 0;
4318
5bd77a73 4319 if (!cupsdSendHeader(con, code, type, CUPSD_AUTH_NONE))
e1d6a774 4320 return (0);
4321
4322 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
4323 httpGetDateString(filestats->st_mtime)) < 0)
4324 return (0);
4325 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
4326 CUPS_LLCAST filestats->st_size) < 0)
4327 return (0);
4328 if (httpPrintf(HTTP(con), "\r\n") < 0)
4329 return (0);
4330
07725fee 4331 if (cupsdFlushHeader(con) < 0)
4332 return (0);
d09495fa 4333
cb7f98ee 4334 con->http.data_encoding = HTTP_ENCODING_LENGTH;
e1d6a774 4335 con->http.data_remaining = filestats->st_size;
4336
4337 if (con->http.data_remaining <= INT_MAX)
4338 con->http._data_remaining = con->http.data_remaining;
4339 else
4340 con->http._data_remaining = INT_MAX;
4341
f7deaa1a 4342 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient,
4343 (cupsd_selfunc_t)cupsdWriteClient, con);
e1d6a774 4344
1bc82dd9
MS		 4345 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Sending file.", con->http.fd);
4346
e1d6a774 4347 return (1);
4348}
4349
4350
4351/*
f899b121 4352 * 'write_pipe()' - Flag that data is available on the CGI pipe.
4353 */
4354
4355static void
4356write_pipe(cupsd_client_t *con) /* I - Client connection */
4357{
b9faaae1 4358 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 4359 "[Client %d] write_pipe CGI output on fd %d",
4360 con->http.fd, con->file);
f899b121 4361
4362 con->file_ready = 1;
4363
4364 cupsdRemoveSelect(con->file);
4365 cupsdAddSelect(con->http.fd, NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
1bc82dd9
MS		 4366
4367 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] CGI data ready to be sent.",
4368 con->http.fd);
f899b121 4369}
4370
4371
4372/*
71f63681 4373 * End of "$Id: client.c 11642 2014-02-27 15:57:59Z msweet $".
ef416fc2 4374 */
Unnamed repository; edit this file 'description' to name the repository.