]> git.ipfire.org Git - thirdparty/cups.git/blame - scheduler/client.c
projects / thirdparty / cups.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Update localization files.
[thirdparty/cups.git] / scheduler / client.c
CommitLineData
ef416fc2 1/*
5ec1fd3d 2 * Client routines for the CUPS scheduler.
ef416fc2 3 *
4feb1fe2
MS		 4 * Copyright © 2007-2018 by Apple Inc.
5 * Copyright © 1997-2007 by Easy Software Products, all rights reserved.
f7deaa1a 6 *
5ec1fd3d
MS		 7 * This file contains Kerberos support code, copyright 2006 by
8 * Jelmer Vernooij.
ef416fc2 9 *
4feb1fe2
MS		 10 * Licensed under Apache License v2.0. See the file "LICENSE" for more
11 * information.
ef416fc2 12 */
13
14/*
15 * Include necessary headers...
16 */
17
5ec1fd3d 18#define _CUPS_NO_DEPRECATED
d21dc0ed 19#define _HTTP_NO_PRIVATE
ef416fc2 20#include "cupsd.h"
21
cb7f98ee
MS		 22#ifdef __APPLE__
23# include <libproc.h>
24#endif /* __APPLE__ */
749b1e90
MS		 25#ifdef HAVE_TCPD_H
26# include <tcpd.h>
27#endif /* HAVE_TCPD_H */
28
ef416fc2 29
30/*
31 * Local functions...
32 */
33
34static int check_if_modified(cupsd_client_t *con,
35 struct stat *filestats);
3dfe78b3
MS		 36static int compare_clients(cupsd_client_t *a, cupsd_client_t *b,
37 void *data);
d3d89474
MS		 38#ifdef HAVE_SSL
39static int cupsd_start_tls(cupsd_client_t *con, http_encryption_t e);
40#endif /* HAVE_SSL */
f7deaa1a 41static char *get_file(cupsd_client_t *con, struct stat *filestats,
07623986 42 char *filename, size_t len);
c41769ff 43static http_status_t install_cupsd_conf(cupsd_client_t *con);
e1d6a774 44static int is_cgi(cupsd_client_t *con, const char *filename,
45 struct stat *filestats, mime_type_t *type);
ef416fc2 46static int is_path_absolute(const char *path);
47static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
48 char *command, char *options, int root);
e07d4801 49static int valid_host(cupsd_client_t *con);
a74454a7 50static int write_file(cupsd_client_t *con, http_status_t code,
51 char *filename, char *type,
52 struct stat *filestats);
f899b121 53static void write_pipe(cupsd_client_t *con);
ef416fc2 54
55
56/*
57 * 'cupsdAcceptClient()' - Accept a new client.
58 */
59
60void
61cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
62{
48bd1142 63 const char *hostname; /* Hostname of client */
996acce8 64 char name[256]; /* Hostname of client */
ef416fc2 65 int count; /* Count of connections on a host */
bd7854cb 66 cupsd_client_t *con, /* New client pointer */
67 *tempcon; /* Temporary client pointer */
ef416fc2 68 socklen_t addrlen; /* Length of address */
ef416fc2 69 http_addr_t temp; /* Temporary address variable */
70 static time_t last_dos = 0; /* Time of last DoS attack */
749b1e90
MS		 71#ifdef HAVE_TCPD_H
72 struct request_info wrap_req; /* TCP wrappers request information */
73#endif /* HAVE_TCPD_H */
ef416fc2 74
75
ffe32673 76 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAcceptClient(lis=%p(%d)) Clients=%d", lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 77
78 /*
79 * Make sure we don't have a full set of clients already...
80 */
81
bd7854cb 82 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 83 return;
84
e4e37194
MS		 85 cupsdSetBusyState(1);
86
ef416fc2 87 /*
88 * Get a pointer to the next available client...
89 */
90
bd7854cb 91 if (!Clients)
92 Clients = cupsArrayNew(NULL, NULL);
93
94 if (!Clients)
91c84a35
MS		 95 {
96 cupsdLogMessage(CUPSD_LOG_ERROR,
3dfe78b3
MS		 97 "Unable to allocate memory for clients array!");
98 cupsdPauseListening();
99 return;
100 }
101
102 if (!ActiveClients)
103 ActiveClients = cupsArrayNew((cups_array_func_t)compare_clients, NULL);
104
105 if (!ActiveClients)
106 {
107 cupsdLogMessage(CUPSD_LOG_ERROR,
108 "Unable to allocate memory for active clients array!");
91c84a35 109 cupsdPauseListening();
bd7854cb 110 return;
91c84a35 111 }
bd7854cb 112
91c84a35
MS		 113 if ((con = calloc(1, sizeof(cupsd_client_t))) == NULL)
114 {
115 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to allocate memory for client!");
116 cupsdPauseListening();
117 return;
118 }
ef416fc2 119
ef416fc2 120 /*
121 * Accept the client and get the remote address...
122 */
123
996acce8
MS		 124 con->number = ++ LastClientNumber;
125 con->file = -1;
ef416fc2 126
996acce8 127 if ((con->http = httpAcceptConnection(lis->fd, 0)) == NULL)
ef416fc2 128 {
76cd9e37
MS		 129 if (errno == ENFILE || errno == EMFILE)
130 cupsdPauseListening();
131
ef416fc2 132 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
133 strerror(errno));
bd7854cb 134 free(con);
76cd9e37 135
ef416fc2 136 return;
137 }
138
22c9029b 139 /*
996acce8 140 * Save the connected address and port number...
22c9029b 141 */
ef416fc2 142
cd1a83ea
MS		 143 addrlen = sizeof(con->clientaddr);
144
145 if (getsockname(httpGetFd(con->http), (struct sockaddr *)&con->clientaddr, &addrlen) || addrlen == 0)
146 con->clientaddr = lis->address;
147
148 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Server address is \"%s\".", httpAddrString(&con->clientaddr, name, sizeof(name)));
ef416fc2 149
ef416fc2 150 /*
151 * Check the number of clients on the same address...
152 */
153
bd7854cb 154 for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
155 tempcon;
156 tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
996acce8 157 if (httpAddrEqual(httpGetAddress(tempcon->http), httpGetAddress(con->http)))
ef416fc2 158 {
159 count ++;
160 if (count >= MaxClientsPerHost)
161 break;
162 }
163
164 if (count >= MaxClientsPerHost)
165 {
166 if ((time(NULL) - last_dos) >= 60)
167 {
168 last_dos = time(NULL);
169 cupsdLogMessage(CUPSD_LOG_WARN,
bd7854cb 170 "Possible DoS attack - more than %d clients connecting "
996acce8 171 "from %s.",
749b1e90 172 MaxClientsPerHost,
996acce8 173 httpGetHostname(con->http, name, sizeof(name)));
ef416fc2 174 }
175
996acce8 176 httpClose(con->http);
bd7854cb 177 free(con);
ef416fc2 178 return;
179 }
180
181 /*
182 * Get the hostname or format the IP address as needed...
183 */
184
48bd1142
MS		 185 if (HostNameLookups)
186 hostname = httpResolveHostname(con->http, NULL, 0);
ef416fc2 187 else
48bd1142 188 hostname = httpGetHostname(con->http, NULL, 0);
ef416fc2 189
190 if (hostname == NULL && HostNameLookups == 2)
191 {
192 /*
193 * Can't have an unresolved IP address with double-lookups enabled...
194 */
195
996acce8 196 httpClose(con->http);
ef416fc2 197
996acce8 198 cupsdLogClient(con, CUPSD_LOG_WARN,
ef416fc2 199 "Name lookup failed - connection from %s closed!",
5ec1fd3d 200 httpGetHostname(con->http, NULL, 0));
bd7854cb 201
202 free(con);
ef416fc2 203 return;
204 }
205
206 if (HostNameLookups == 2)
207 {
208 /*
209 * Do double lookups as needed...
210 */
211
48bd1142
MS		 212 http_addrlist_t *addrlist, /* List of addresses */
213 *addr; /* Current address */
214
215 if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, NULL)) != NULL)
ef416fc2 216 {
217 /*
218 * See if the hostname maps to the same IP address...
219 */
220
221 for (addr = addrlist; addr; addr = addr->next)
5ec1fd3d 222 if (httpAddrEqual(httpGetAddress(con->http), &(addr->addr)))
ef416fc2 223 break;
224 }
225 else
226 addr = NULL;
227
228 httpAddrFreeList(addrlist);
229
230 if (!addr)
231 {
232 /*
233 * Can't have a hostname that doesn't resolve to the same IP address
234 * with double-lookups enabled...
235 */
236
996acce8 237 httpClose(con->http);
ef416fc2 238
996acce8 239 cupsdLogClient(con, CUPSD_LOG_WARN,
ef416fc2 240 "IP lookup failed - connection from %s closed!",
5ec1fd3d 241 httpGetHostname(con->http, NULL, 0));
bd7854cb 242 free(con);
ef416fc2 243 return;
244 }
245 }
246
749b1e90
MS		 247#ifdef HAVE_TCPD_H
248 /*
249 * See if the connection is denied by TCP wrappers...
250 */
251
996acce8
MS		 252 request_init(&wrap_req, RQ_DAEMON, "cupsd", RQ_FILE, httpGetFd(con->http),
253 NULL);
749b1e90
MS		 254 fromhost(&wrap_req);
255
256 if (!hosts_access(&wrap_req))
257 {
996acce8 258 httpClose(con->http);
749b1e90 259
996acce8 260 cupsdLogClient(con, CUPSD_LOG_WARN,
749b1e90 261 "Connection from %s refused by /etc/hosts.allow and "
5ec1fd3d 262 "/etc/hosts.deny rules.", httpGetHostname(con->http, NULL, 0));
749b1e90
MS		 263 free(con);
264 return;
265 }
266#endif /* HAVE_TCPD_H */
267
ef416fc2 268#ifdef AF_LOCAL
5ec1fd3d 269 if (httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL)
cb7f98ee
MS		 270 {
271# ifdef __APPLE__
272 socklen_t peersize; /* Size of peer credentials */
273 pid_t peerpid; /* Peer process ID */
996acce8 274 char peername[256]; /* Name of process */
cb7f98ee
MS		 275
276 peersize = sizeof(peerpid);
3e4dcdb9 277 if (!getsockopt(httpGetFd(con->http), SOL_LOCAL, LOCAL_PEERPID, &peerpid,
996acce8 278 &peersize))
cb7f98ee 279 {
3e4dcdb9 280 if (!proc_name((int)peerpid, peername, sizeof(peername)))
996acce8
MS		 281 cupsdLogClient(con, CUPSD_LOG_DEBUG,
282 "Accepted from %s (Domain ???[%d])",
5ec1fd3d 283 httpGetHostname(con->http, NULL, 0), (int)peerpid);
cb7f98ee 284 else
996acce8
MS		 285 cupsdLogClient(con, CUPSD_LOG_DEBUG,
286 "Accepted from %s (Domain %s[%d])",
3e4dcdb9 287 httpGetHostname(con->http, NULL, 0), peername, (int)peerpid);
cb7f98ee
MS		 288 }
289 else
290# endif /* __APPLE__ */
291
996acce8 292 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Accepted from %s (Domain)",
5ec1fd3d 293 httpGetHostname(con->http, NULL, 0));
cb7f98ee 294 }
ef416fc2 295 else
296#endif /* AF_LOCAL */
996acce8 297 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Accepted from %s:%d (IPv%d)",
5ec1fd3d
MS		 298 httpGetHostname(con->http, NULL, 0),
299 httpAddrPort(httpGetAddress(con->http)),
300 httpAddrFamily(httpGetAddress(con->http)) == AF_INET ? 4 : 6);
ef416fc2 301
302 /*
303 * Get the local address the client connected to...
304 */
305
306 addrlen = sizeof(temp);
996acce8 307 if (getsockname(httpGetFd(con->http), (struct sockaddr *)&temp, &addrlen))
ef416fc2 308 {
996acce8
MS		 309 cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to get local address - %s",
310 strerror(errno));
ef416fc2 311
5a9febac 312 strlcpy(con->servername, "localhost", sizeof(con->servername));
ef416fc2 313 con->serverport = LocalPort;
314 }
22c9029b 315#ifdef AF_LOCAL
5ec1fd3d 316 else if (httpAddrFamily(&temp) == AF_LOCAL)
22c9029b 317 {
5a9febac 318 strlcpy(con->servername, "localhost", sizeof(con->servername));
22c9029b
MS		 319 con->serverport = LocalPort;
320 }
321#endif /* AF_LOCAL */
ef416fc2 322 else
323 {
22c9029b
MS		 324 if (httpAddrLocalhost(&temp))
325 strlcpy(con->servername, "localhost", sizeof(con->servername));
6961465f 326 else if (HostNameLookups)
22c9029b 327 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
ef416fc2 328 else
22c9029b 329 httpAddrString(&temp, con->servername, sizeof(con->servername));
b19ccc9e 330
a469f8a5 331 con->serverport = httpAddrPort(&(lis->address));
ef416fc2 332 }
333
dcb445bc
MS		 334 /*
335 * Add the connection to the array of active clients...
336 */
337
bd7854cb 338 cupsArrayAdd(Clients, con);
339
ef416fc2 340 /*
b9faaae1 341 * Add the socket to the server select.
ef416fc2 342 */
343
996acce8
MS		 344 cupsdAddSelect(httpGetFd(con->http), (cupsd_selfunc_t)cupsdReadClient, NULL,
345 con);
ef416fc2 346
996acce8 347 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for request.");
1bc82dd9 348
ef416fc2 349 /*
350 * Temporarily suspend accept()'s until we lose a client...
351 */
352
bd7854cb 353 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 354 cupsdPauseListening();
355
356#ifdef HAVE_SSL
357 /*
358 * See if we are connecting on a secure port...
359 */
360
5ec1fd3d 361 if (lis->encryption == HTTP_ENCRYPTION_ALWAYS)
ef416fc2 362 {
363 /*
364 * https connection; go secure...
365 */
366
d3d89474 367 if (cupsd_start_tls(con, HTTP_ENCRYPTION_ALWAYS))
411affcf 368 cupsdCloseClient(con);
ef416fc2 369 }
370 else
371 con->auto_ssl = 1;
372#endif /* HAVE_SSL */
373}
374
375
376/*
377 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
378 */
379
380void
381cupsdCloseAllClients(void)
382{
bd7854cb 383 cupsd_client_t *con; /* Current client */
384
385
ffe32673 386 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdCloseAllClients() Clients=%d", cupsArrayCount(Clients));
b9faaae1 387
bd7854cb 388 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
389 con;
390 con = (cupsd_client_t *)cupsArrayNext(Clients))
49d87452
MS		 391 if (cupsdCloseClient(con))
392 cupsdCloseClient(con);
ef416fc2 393}
394
395
396/*
397 * 'cupsdCloseClient()' - Close a remote client.
398 */
399
400int /* O - 1 if partial close, 0 if fully closed */
401cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
402{
403 int partial; /* Do partial close for SSL? */
ef416fc2 404
405
996acce8 406 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing connection.");
ef416fc2 407
408 /*
409 * Flush pending writes before closing...
410 */
411
996acce8 412 httpFlushWrite(con->http);
ef416fc2 413
414 partial = 0;
415
ef416fc2 416 if (con->pipe_pid != 0)
417 {
418 /*
419 * Stop any CGI process...
420 */
421
ef416fc2 422 cupsdEndProcess(con->pipe_pid, 1);
423 con->pipe_pid = 0;
424 }
425
426 if (con->file >= 0)
427 {
f7deaa1a 428 cupsdRemoveSelect(con->file);
ef416fc2 429
ef416fc2 430 close(con->file);
431 con->file = -1;
432 }
433
434 /*
435 * Close the socket and clear the file from the input set for select()...
436 */
437
996acce8 438 if (httpGetFd(con->http) >= 0)
ef416fc2 439 {
3dfe78b3 440 cupsArrayRemove(ActiveClients, con);
e4e37194 441 cupsdSetBusyState(0);
3dfe78b3 442
5ec1fd3d
MS		 443#ifdef HAVE_SSL
444 /*
445 * Shutdown encryption as needed...
446 */
447
448 if (httpIsEncrypted(con->http))
449 partial = 1;
450#endif /* HAVE_SSL */
451
ef416fc2 452 if (partial)
453 {
454 /*
455 * Only do a partial close so that the encrypted client gets everything.
456 */
457
5ec1fd3d 458 httpShutdown(con->http);
996acce8
MS		 459 cupsdAddSelect(httpGetFd(con->http), (cupsd_selfunc_t)cupsdReadClient,
460 NULL, con);
1bc82dd9 461
996acce8 462 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for socket close.");
ef416fc2 463 }
464 else
465 {
466 /*
467 * Shut the socket down fully...
468 */
469
996acce8
MS		 470 cupsdRemoveSelect(httpGetFd(con->http));
471 httpClose(con->http);
472 con->http = NULL;
ef416fc2 473 }
474 }
475
476 if (!partial)
477 {
478 /*
479 * Free memory...
480 */
481
5ec1fd3d
MS		 482 cupsdRemoveSelect(httpGetFd(con->http));
483
996acce8 484 httpClose(con->http);
ef416fc2 485
5e6c3df7
MS		 486 if (con->filename)
487 {
488 unlink(con->filename);
489 cupsdClearString(&con->filename);
490 }
491
ef416fc2 492 cupsdClearString(&con->command);
493 cupsdClearString(&con->options);
b86bc4cf 494 cupsdClearString(&con->query_string);
ef416fc2 495
496 if (con->request)
497 {
498 ippDelete(con->request);
499 con->request = NULL;
500 }
501
502 if (con->response)
503 {
504 ippDelete(con->response);
505 con->response = NULL;
506 }
507
508 if (con->language)
509 {
510 cupsLangFree(con->language);
511 con->language = NULL;
512 }
513
f7deaa1a 514#ifdef HAVE_AUTHORIZATION_H
515 if (con->authref)
516 {
517 AuthorizationFree(con->authref, kAuthorizationFlagDefaults);
518 con->authref = NULL;
519 }
520#endif /* HAVE_AUTHORIZATION_H */
521
ef416fc2 522 /*
523 * Re-enable new client connections if we are going back under the
524 * limit...
525 */
526
bd7854cb 527 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 528 cupsdResumeListening();
529
530 /*
531 * Compact the list of clients as necessary...
532 */
533
bd7854cb 534 cupsArrayRemove(Clients, con);
ef416fc2 535
bd7854cb 536 free(con);
ef416fc2 537 }
538
539 return (partial);
540}
541
542
ef416fc2 543/*
544 * 'cupsdReadClient()' - Read data from a client.
545 */
546
f7deaa1a 547void
ef416fc2 548cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
549{
550 char line[32768], /* Line from client... */
ef416fc2 551 locale[64], /* Locale */
552 *ptr; /* Pointer into strings */
ef416fc2 553 http_status_t status; /* Transfer status */
554 ipp_state_t ipp_state; /* State of IPP transfer */
555 int bytes; /* Number of bytes to POST */
556 char *filename; /* Name of file for GET/HEAD */
557 char buf[1024]; /* Buffer for real filename */
558 struct stat filestats; /* File information */
559 mime_type_t *type; /* MIME type of file */
ef416fc2 560 static unsigned request_id = 0; /* Request ID for temp files */
561
562
5ec1fd3d 563 status = HTTP_STATUS_CONTINUE;
ef416fc2 564
ffe32673 565 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "cupsdReadClient: error=%d, used=%d, state=%s, data_encoding=HTTP_ENCODING_%s, data_remaining=" CUPS_LLFMT ", request=%p(%s), file=%d", httpError(con->http), (int)httpGetReady(con->http), httpStateString(httpGetState(con->http)), httpIsChunked(con->http) ? "CHUNKED" : "LENGTH", CUPS_LLCAST httpGetRemaining(con->http), con->request, con->request ? ippStateString(ippGetState(con->request)) : "", con->file);
ef416fc2 566
43dcaf3b
MS		 567 if (httpGetState(con->http) == HTTP_STATE_GET_SEND ||
568 httpGetState(con->http) == HTTP_STATE_POST_SEND ||
569 httpGetState(con->http) == HTTP_STATE_STATUS)
570 {
571 /*
572 * If we get called in the wrong state, then something went wrong with the
573 * connection and we need to shut it down...
574 */
575
bb00c43f
MS		 576 if (!httpGetReady(con->http) && recv(httpGetFd(con->http), buf, 1, MSG_PEEK) < 1)
577 {
578 /*
579 * Connection closed...
580 */
581
582 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on EOF.");
583 cupsdCloseClient(con);
584 return;
585 }
586
ffe32673 587 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on unexpected HTTP read state %s.", httpStateString(httpGetState(con->http)));
43dcaf3b
MS		 588 cupsdCloseClient(con);
589 return;
590 }
591
ef416fc2 592#ifdef HAVE_SSL
593 if (con->auto_ssl)
594 {
595 /*
596 * Automatically check for a SSL/TLS handshake...
597 */
598
599 con->auto_ssl = 0;
600
996acce8 601 if (recv(httpGetFd(con->http), buf, 1, MSG_PEEK) == 1 &&
ef416fc2 602 (!buf[0] || !strchr("DGHOPT", buf[0])))
603 {
604 /*
605 * Encrypt this connection...
606 */
607
ffe32673 608 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "Saw first byte %02X, auto-negotiating SSL/TLS session.", buf[0] & 255);
ef416fc2 609
d3d89474 610 if (cupsd_start_tls(con, HTTP_ENCRYPTION_ALWAYS))
f7deaa1a 611 cupsdCloseClient(con);
411affcf 612
f7deaa1a 613 return;
ef416fc2 614 }
615 }
616#endif /* HAVE_SSL */
617
5ec1fd3d 618 switch (httpGetState(con->http))
ef416fc2 619 {
cb7f98ee 620 case HTTP_STATE_WAITING :
ef416fc2 621 /*
622 * See if we've received a request line...
623 */
624
d21dc0ed
MS		 625 con->operation = httpReadRequest(con->http, con->uri, sizeof(con->uri));
626 if (con->operation == HTTP_STATE_ERROR ||
627 con->operation == HTTP_STATE_UNKNOWN_METHOD ||
628 con->operation == HTTP_STATE_UNKNOWN_VERSION)
ef416fc2 629 {
d21dc0ed 630 if (httpError(con->http))
996acce8
MS		 631 cupsdLogClient(con, CUPSD_LOG_DEBUG,
632 "HTTP_STATE_WAITING Closing for error %d (%s)",
5ec1fd3d 633 httpError(con->http), strerror(httpError(con->http)));
f11a948a 634 else
996acce8 635 cupsdLogClient(con, CUPSD_LOG_DEBUG,
d21dc0ed
MS		 636 "HTTP_STATE_WAITING Closing on error: %s",
637 cupsLastErrorString());
f11a948a 638
f7deaa1a 639 cupsdCloseClient(con);
640 return;
ef416fc2 641 }
642
643 /*
644 * Ignore blank request lines...
645 */
646
d21dc0ed 647 if (con->operation == HTTP_STATE_WAITING)
ef416fc2 648 break;
649
650 /*
651 * Clear other state variables...
652 */
653
d21dc0ed
MS		 654 con->bytes = 0;
655 con->file = -1;
656 con->file_ready = 0;
657 con->pipe_pid = 0;
658 con->username[0] = '\0';
659 con->password[0] = '\0';
ef416fc2 660
661 cupsdClearString(&con->command);
662 cupsdClearString(&con->options);
b86bc4cf 663 cupsdClearString(&con->query_string);
ef416fc2 664
2abf387c 665 if (con->request)
666 {
667 ippDelete(con->request);
668 con->request = NULL;
669 }
670
671 if (con->response)
672 {
673 ippDelete(con->response);
674 con->response = NULL;
675 }
676
677 if (con->language)
ef416fc2 678 {
679 cupsLangFree(con->language);
680 con->language = NULL;
681 }
682
09a101d6 683#ifdef HAVE_GSSAPI
97c9a8d7 684 con->have_gss = 0;
07ed0e9a 685 con->gss_uid = 0;
09a101d6 686#endif /* HAVE_GSSAPI */
687
ef416fc2 688 /*
689 * Handle full URLs in the request line...
690 */
691
692 if (strcmp(con->uri, "*"))
693 {
e6013cfa 694 char scheme[HTTP_MAX_URI], /* Method/scheme */
ef416fc2 695 userpass[HTTP_MAX_URI], /* Username:password */
696 hostname[HTTP_MAX_URI], /* Hostname */
697 resource[HTTP_MAX_URI]; /* Resource path */
698 int port; /* Port number */
699
ef416fc2 700 /*
701 * Separate the URI into its components...
702 */
703
d21dc0ed
MS		 704 if (httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
705 scheme, sizeof(scheme),
706 userpass, sizeof(userpass),
707 hostname, sizeof(hostname), &port,
708 resource, sizeof(resource)) < HTTP_URI_STATUS_OK)
709 {
710 cupsdLogClient(con, CUPSD_LOG_ERROR, "Bad URI \"%s\" in request.",
711 con->uri);
712 cupsdSendError(con, HTTP_STATUS_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE);
713 cupsdCloseClient(con);
714 return;
715 }
ef416fc2 716
d21dc0ed 717 /*
ef416fc2 718 * Only allow URIs with the servername, localhost, or an IP
719 * address...
720 */
721
e6013cfa 722 if (strcmp(scheme, "file") &&
88f9aafc
MS		 723 _cups_strcasecmp(hostname, ServerName) &&
724 _cups_strcasecmp(hostname, "localhost") &&
d21dc0ed 725 !cupsArrayFind(ServerAlias, hostname) &&
e6013cfa 726 !isdigit(hostname[0]) && hostname[0] != '[')
ef416fc2 727 {
728 /*
729 * Nope, we don't do proxies...
730 */
731
996acce8
MS		 732 cupsdLogClient(con, CUPSD_LOG_ERROR, "Bad URI \"%s\" in request.",
733 con->uri);
5ec1fd3d 734 cupsdSendError(con, HTTP_STATUS_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE);
f7deaa1a 735 cupsdCloseClient(con);
736 return;
ef416fc2 737 }
738
739 /*
740 * Copy the resource portion back into the URI; both resource and
741 * con->uri are HTTP_MAX_URI bytes in size...
742 */
743
5a9febac 744 strlcpy(con->uri, resource, sizeof(con->uri));
ef416fc2 745 }
746
747 /*
748 * Process the request...
749 */
750
dfd5680b 751 gettimeofday(&(con->start), NULL);
ef416fc2 752
996acce8 753 cupsdLogClient(con, CUPSD_LOG_DEBUG, "%s %s HTTP/%d.%d",
a73ca01e 754 httpStateString(con->operation) + 11, con->uri,
d21dc0ed
MS		 755 httpGetVersion(con->http) / 100,
756 httpGetVersion(con->http) % 100);
ef416fc2 757
49d87452
MS		 758 if (!cupsArrayFind(ActiveClients, con))
759 {
760 cupsArrayAdd(ActiveClients, con);
e4e37194 761 cupsdSetBusyState(0);
49d87452 762 }
3dfe78b3 763
cb7f98ee
MS		 764 case HTTP_STATE_OPTIONS :
765 case HTTP_STATE_DELETE :
766 case HTTP_STATE_GET :
767 case HTTP_STATE_HEAD :
768 case HTTP_STATE_POST :
769 case HTTP_STATE_PUT :
770 case HTTP_STATE_TRACE :
ef416fc2 771 /*
772 * Parse incoming parameters until the status changes...
773 */
774
5ec1fd3d
MS		 775 while ((status = httpUpdate(con->http)) == HTTP_STATUS_CONTINUE)
776 if (!httpGetReady(con->http))
f7deaa1a 777 break;
ef416fc2 778
5ec1fd3d 779 if (status != HTTP_STATUS_OK && status != HTTP_STATUS_CONTINUE)
ef416fc2 780 {
5ec1fd3d 781 if (httpError(con->http) && httpError(con->http) != EPIPE)
996acce8
MS		 782 cupsdLogClient(con, CUPSD_LOG_DEBUG,
783 "Closing for error %d (%s) while reading headers.",
5ec1fd3d 784 httpError(con->http), strerror(httpError(con->http)));
f11a948a 785 else
996acce8
MS		 786 cupsdLogClient(con, CUPSD_LOG_DEBUG,
787 "Closing on EOF while reading headers.");
f11a948a 788
5ec1fd3d 789 cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 790 cupsdCloseClient(con);
791 return;
ef416fc2 792 }
793 break;
794
795 default :
5ec1fd3d 796 if (!httpGetReady(con->http) && recv(httpGetFd(con->http), buf, 1, MSG_PEEK) < 1)
e6013cfa
MS		 797 {
798 /*
799 * Connection closed...
800 */
801
996acce8 802 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on EOF.");
e6013cfa
MS		 803 cupsdCloseClient(con);
804 return;
805 }
ef416fc2 806 break; /* Anti-compiler-warning-code */
807 }
808
809 /*
810 * Handle new transfers...
811 */
812
884b7ed1 813 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Read: status=%d, state=%d", status, httpGetState(con->http));
dfc45c1b 814
5ec1fd3d 815 if (status == HTTP_STATUS_OK)
ef416fc2 816 {
4feb1fe2
MS		 817 /*
818 * Record whether the client is a web browser. "Mozilla" was the original
819 * and it seems that every web browser in existence now uses that as the
820 * prefix with additional information identifying *which* browser.
821 *
822 * Chrome (at least) has problems with multiple WWW-Authenticate values in
823 * a single header, so we only report Basic or Negotiate to web browsers and
824 * leave the multiple choices to the native CUPS client...
825 */
826
827 con->is_browser = !strncmp(httpGetField(con->http, HTTP_FIELD_USER_AGENT), "Mozilla/", 8);
828
5ec1fd3d 829 if (httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE)[0])
ef416fc2 830 {
831 /*
832 * Figure out the locale from the Accept-Language and Content-Type
833 * fields...
834 */
835
5ec1fd3d 836 if ((ptr = strchr(httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE),
f11a948a 837 ',')) != NULL)
ef416fc2 838 *ptr = '\0';
839
5ec1fd3d 840 if ((ptr = strchr(httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE),
f11a948a 841 ';')) != NULL)
ef416fc2 842 *ptr = '\0';
843
5ec1fd3d 844 if ((ptr = strstr(httpGetField(con->http, HTTP_FIELD_CONTENT_TYPE),
f11a948a 845 "charset=")) != NULL)
ef416fc2 846 {
847 /*
848 * Combine language and charset, and trim any extra params in the
849 * content-type.
850 */
851
852 snprintf(locale, sizeof(locale), "%s.%s",
5ec1fd3d 853 httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE), ptr + 8);
ef416fc2 854
855 if ((ptr = strchr(locale, ',')) != NULL)
856 *ptr = '\0';
857 }
858 else
f8b3a85b 859 snprintf(locale, sizeof(locale), "%s.UTF-8",
5ec1fd3d 860 httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE));
d6ae789d 861
ef416fc2 862 con->language = cupsLangGet(locale);
863 }
864 else
865 con->language = cupsLangGet(DefaultLocale);
866
867 cupsdAuthorize(con);
868
5ec1fd3d 869 if (!_cups_strncasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION),
85dda01c 870 "Keep-Alive", 10) && KeepAlive)
5ec1fd3d
MS		 871 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_ON);
872 else if (!_cups_strncasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION),
85dda01c 873 "close", 5))
5ec1fd3d 874 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
ef416fc2 875
5ec1fd3d
MS		 876 if (!httpGetField(con->http, HTTP_FIELD_HOST)[0] &&
877 httpGetVersion(con->http) >= HTTP_VERSION_1_1)
ef416fc2 878 {
879 /*
880 * HTTP/1.1 and higher require the "Host:" field...
881 */
882
5ec1fd3d 883 if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 884 {
996acce8 885 cupsdLogClient(con, CUPSD_LOG_ERROR, "Missing Host: field in request.");
f7deaa1a 886 cupsdCloseClient(con);
887 return;
888 }
ef416fc2 889 }
e07d4801 890 else if (!valid_host(con))
e6013cfa
MS		 891 {
892 /*
893 * Access to localhost must use "localhost" or the corresponding IPv4
894 * or IPv6 values in the Host: field.
895 */
896
996acce8
MS		 897 cupsdLogClient(con, CUPSD_LOG_ERROR,
898 "Request from \"%s\" using invalid Host: field \"%s\".",
5ec1fd3d 899 httpGetHostname(con->http, NULL, 0), httpGetField(con->http, HTTP_FIELD_HOST));
e6013cfa 900
5ec1fd3d 901 if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE))
e6013cfa
MS		 902 {
903 cupsdCloseClient(con);
904 return;
905 }
906 }
cb7f98ee 907 else if (con->operation == HTTP_STATE_OPTIONS)
ef416fc2 908 {
909 /*
910 * Do OPTIONS command...
911 */
912
5bd77a73 913 if (con->best && con->best->type != CUPSD_AUTH_NONE)
ef416fc2 914 {
a73ca01e
MS		 915 httpClearFields(con->http);
916
5ec1fd3d 917 if (!cupsdSendHeader(con, HTTP_STATUS_UNAUTHORIZED, NULL, CUPSD_AUTH_NONE))
f7deaa1a 918 {
919 cupsdCloseClient(con);
920 return;
921 }
ef416fc2 922 }
923
a80b2360 924 if (!_cups_strcasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION), "Upgrade") && strstr(httpGetField(con->http, HTTP_FIELD_UPGRADE), "TLS/") != NULL && !httpIsEncrypted(con->http))
ef416fc2 925 {
926#ifdef HAVE_SSL
927 /*
928 * Do encryption stuff...
929 */
930
a73ca01e 931 httpClearFields(con->http);
ef416fc2 932
e200616a
MS		 933 if (!cupsdSendHeader(con, HTTP_STATUS_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE))
934 {
935 cupsdCloseClient(con);
936 return;
937 }
e200616a 938
d3d89474 939 if (cupsd_start_tls(con, HTTP_ENCRYPTION_REQUIRED))
f7deaa1a 940 {
941 cupsdCloseClient(con);
942 return;
943 }
ef416fc2 944#else
7d5824d6 945 if (!cupsdSendError(con, HTTP_STATUS_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 946 {
947 cupsdCloseClient(con);
948 return;
949 }
ef416fc2 950#endif /* HAVE_SSL */
951 }
952
a73ca01e 953 httpClearFields(con->http);
e200616a
MS		 954 httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0");
955
956 if (!cupsdSendHeader(con, HTTP_STATUS_OK, NULL, CUPSD_AUTH_NONE))
957 {
958 cupsdCloseClient(con);
959 return;
960 }
ef416fc2 961 }
962 else if (!is_path_absolute(con->uri))
963 {
964 /*
965 * Protect against malicious users!
966 */
967
996acce8
MS		 968 cupsdLogClient(con, CUPSD_LOG_ERROR,
969 "Request for non-absolute resource \"%s\".", con->uri);
bf3816c7 970
5ec1fd3d 971 if (!cupsdSendError(con, HTTP_STATUS_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 972 {
973 cupsdCloseClient(con);
974 return;
975 }
ef416fc2 976 }
977 else
978 {
5ec1fd3d 979 if (!_cups_strcasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION),
d21dc0ed 980 "Upgrade") && !httpIsEncrypted(con->http))
ef416fc2 981 {
982#ifdef HAVE_SSL
983 /*
984 * Do encryption stuff...
985 */
986
a73ca01e 987 httpClearFields(con->http);
ef416fc2 988
e200616a
MS		 989 if (!cupsdSendHeader(con, HTTP_STATUS_SWITCHING_PROTOCOLS, NULL,
990 CUPSD_AUTH_NONE))
991 {
992 cupsdCloseClient(con);
993 return;
994 }
ef416fc2 995
d3d89474 996 if (cupsd_start_tls(con, HTTP_ENCRYPTION_REQUIRED))
f7deaa1a 997 {
998 cupsdCloseClient(con);
999 return;
1000 }
ef416fc2 1001#else
7d5824d6 1002 if (!cupsdSendError(con, HTTP_STATUS_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 1003 {
1004 cupsdCloseClient(con);
1005 return;
1006 }
ef416fc2 1007#endif /* HAVE_SSL */
1008 }
1009
5ec1fd3d 1010 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_STATUS_OK)
ef416fc2 1011 {
5bd77a73 1012 cupsdSendError(con, status, CUPSD_AUTH_NONE);
f7deaa1a 1013 cupsdCloseClient(con);
1014 return;
ef416fc2 1015 }
1016
d21dc0ed 1017 if (httpGetExpect(con->http) &&
cb7f98ee 1018 (con->operation == HTTP_STATE_POST || con->operation == HTTP_STATE_PUT))
ef416fc2 1019 {
d21dc0ed 1020 if (httpGetExpect(con->http) == HTTP_STATUS_CONTINUE)
b423cd4c 1021 {
1022 /*
1023 * Send 100-continue header...
1024 */
1025
a73ca01e 1026 if (httpWriteResponse(con->http, HTTP_STATUS_CONTINUE))
f7deaa1a 1027 {
1028 cupsdCloseClient(con);
1029 return;
1030 }
b423cd4c 1031 }
1032 else
1033 {
1034 /*
1035 * Send 417-expectation-failed header...
1036 */
1037
a73ca01e 1038 httpClearFields(con->http);
e200616a
MS		 1039 httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0");
1040
a73ca01e
MS		 1041 cupsdSendError(con, HTTP_STATUS_EXPECTATION_FAILED, CUPSD_AUTH_NONE);
1042 cupsdCloseClient(con);
1043 return;
b423cd4c 1044 }
ef416fc2 1045 }
1046
5ec1fd3d 1047 switch (httpGetState(con->http))
ef416fc2 1048 {
cb7f98ee 1049 case HTTP_STATE_GET_SEND :
dfc45c1b
MS		 1050 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Processing GET %s", con->uri);
1051
2fa1ba3c
MS		 1052 if ((filename = get_file(con, &filestats, buf, sizeof(buf))) != NULL)
1053 {
1054 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1055
2fa1ba3c 1056 cupsdLogClient(con, CUPSD_LOG_DEBUG, "filename=\"%s\", type=%s/%s", filename, type ? type->super : "", type ? type->type : "");
ef416fc2 1057
2fa1ba3c 1058 if (is_cgi(con, filename, &filestats, type))
6961465f 1059 {
2fa1ba3c
MS		 1060 /*
1061 * Note: con->command and con->options were set by is_cgi()...
1062 */
6961465f 1063
2fa1ba3c 1064 if (!cupsdSendCommand(con, con->command, con->options, 0))
6961465f 1065 {
2fa1ba3c 1066 if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
6961465f 1067 {
2fa1ba3c
MS		 1068 cupsdCloseClient(con);
1069 return;
6961465f 1070 }
2fa1ba3c
MS		 1071 }
1072 else
1073 cupsdLogRequest(con, HTTP_STATUS_OK);
6961465f 1074
2fa1ba3c
MS		 1075 if (httpGetVersion(con->http) <= HTTP_VERSION_1_0)
1076 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
1077 break;
6961465f 1078 }
db8b865d 1079
2fa1ba3c
MS		 1080 if (!check_if_modified(con, &filestats))
1081 {
1082 if (!cupsdSendError(con, HTTP_STATUS_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1083 {
1084 cupsdCloseClient(con);
1085 return;
1086 }
ef416fc2 1087 }
2fa1ba3c 1088 else
6961465f 1089 {
2fa1ba3c
MS		 1090 if (type == NULL)
1091 strlcpy(line, "text/plain", sizeof(line));
1092 else
1093 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
7cf5915e 1094
2fa1ba3c 1095 if (!write_file(con, HTTP_STATUS_OK, filename, line, &filestats))
7cf5915e
MS		 1096 {
1097 cupsdCloseClient(con);
1098 return;
1099 }
7cf5915e 1100 }
2fa1ba3c
MS		 1101 }
1102 else if (!strncmp(con->uri, "/admin", 6) || !strncmp(con->uri, "/printers", 9) || !strncmp(con->uri, "/classes", 8) || !strncmp(con->uri, "/help", 5) || !strncmp(con->uri, "/jobs", 5))
ef416fc2 1103 {
f07c0121
MS		 1104 if (!WebInterface)
1105 {
1106 /*
1107 * Web interface is disabled. Show an appropriate message...
1108 */
1109
1110 if (!cupsdSendError(con, HTTP_STATUS_CUPS_WEBIF_DISABLED, CUPSD_AUTH_NONE))
1111 {
1112 cupsdCloseClient(con);
1113 return;
1114 }
1115
1116 break;
1117 }
1118
ef416fc2 1119 /*
1120 * Send CGI output...
1121 */
1122
1123 if (!strncmp(con->uri, "/admin", 6))
1124 {
2fa1ba3c 1125 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi", ServerBin);
b423cd4c 1126 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1127 }
1128 else if (!strncmp(con->uri, "/printers", 9))
1129 {
2fa1ba3c 1130 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi", ServerBin);
b423cd4c 1131 if (con->uri[9] && con->uri[10])
1132 cupsdSetString(&con->options, con->uri + 9);
1133 else
1134 cupsdSetString(&con->options, NULL);
ef416fc2 1135 }
1136 else if (!strncmp(con->uri, "/classes", 8))
1137 {
2fa1ba3c 1138 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi", ServerBin);
b423cd4c 1139 if (con->uri[8] && con->uri[9])
1140 cupsdSetString(&con->options, con->uri + 8);
1141 else
1142 cupsdSetString(&con->options, NULL);
ef416fc2 1143 }
1144 else if (!strncmp(con->uri, "/jobs", 5))
1145 {
2fa1ba3c 1146 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi", ServerBin);
b423cd4c 1147 if (con->uri[5] && con->uri[6])
1148 cupsdSetString(&con->options, con->uri + 5);
1149 else
1150 cupsdSetString(&con->options, NULL);
ef416fc2 1151 }
1152 else
1153 {
2fa1ba3c 1154 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi", ServerBin);
b423cd4c 1155 if (con->uri[5] && con->uri[6])
1156 cupsdSetString(&con->options, con->uri + 5);
1157 else
1158 cupsdSetString(&con->options, NULL);
1159 }
ef416fc2 1160
1161 if (!cupsdSendCommand(con, con->command, con->options, 0))
1162 {
5ec1fd3d 1163 if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1164 {
1165 cupsdCloseClient(con);
1166 return;
1167 }
ef416fc2 1168 }
1169 else
5ec1fd3d 1170 cupsdLogRequest(con, HTTP_STATUS_OK);
ef416fc2 1171
d21dc0ed 1172 if (httpGetVersion(con->http) <= HTTP_VERSION_1_0)
5ec1fd3d 1173 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
ef416fc2 1174 }
2fa1ba3c 1175 else
ef416fc2 1176 {
2fa1ba3c 1177 if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1178 {
1179 cupsdCloseClient(con);
1180 return;
1181 }
ef416fc2 1182 }
1183 break;
1184
cb7f98ee 1185 case HTTP_STATE_POST_RECV :
ef416fc2 1186 /*
1187 * See if the POST request includes a Content-Length field, and if
1188 * so check the length against any limits that are set...
1189 */
1190
2fa1ba3c 1191 if (httpGetField(con->http, HTTP_FIELD_CONTENT_LENGTH)[0] && MaxRequestSize > 0 && httpGetLength2(con->http) > MaxRequestSize)
ef416fc2 1192 {
1193 /*
1194 * Request too large...
1195 */
1196
5ec1fd3d 1197 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1198 {
1199 cupsdCloseClient(con);
1200 return;
1201 }
ef416fc2 1202
1203 break;
1204 }
d21dc0ed 1205 else if (httpGetLength2(con->http) < 0)
ef416fc2 1206 {
1207 /*
1208 * Negative content lengths are invalid!
1209 */
1210
5ec1fd3d 1211 if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1212 {
1213 cupsdCloseClient(con);
1214 return;
1215 }
ef416fc2 1216
1217 break;
1218 }
1219
1220 /*
1221 * See what kind of POST request this is; for IPP requests the
1222 * content-type field will be "application/ipp"...
1223 */
1224
2fa1ba3c
MS		 1225 if (!strcmp(httpGetField(con->http, HTTP_FIELD_CONTENT_TYPE), "application/ipp"))
1226 {
ef416fc2 1227 con->request = ippNew();
2fa1ba3c
MS		 1228 break;
1229 }
229681c1
MS		 1230 else if (!WebInterface)
1231 {
1232 /*
1233 * Web interface is disabled. Show an appropriate message...
1234 */
1235
5ec1fd3d 1236 if (!cupsdSendError(con, HTTP_STATUS_CUPS_WEBIF_DISABLED, CUPSD_AUTH_NONE))
229681c1
MS		 1237 {
1238 cupsdCloseClient(con);
1239 return;
1240 }
1241
1242 break;
1243 }
2fa1ba3c
MS		 1244
1245 if ((filename = get_file(con, &filestats, buf, sizeof(buf))) != NULL)
1246 {
1247 /*
1248 * POST to a file...
1249 */
1250
1251 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
1252
1253 if (!is_cgi(con, filename, &filestats, type))
1254 {
1255 /*
1256 * Only POST to CGI's...
1257 */
1258
1259 if (!cupsdSendError(con, HTTP_STATUS_UNAUTHORIZED, CUPSD_AUTH_NONE))
1260 {
1261 cupsdCloseClient(con);
1262 return;
1263 }
1264 }
1265 }
1266 else if (!strncmp(con->uri, "/admin", 6) || !strncmp(con->uri, "/printers", 9) || !strncmp(con->uri, "/classes", 8) || !strncmp(con->uri, "/help", 5) || !strncmp(con->uri, "/jobs", 5))
ef416fc2 1267 {
1268 /*
1269 * CGI request...
1270 */
1271
1272 if (!strncmp(con->uri, "/admin", 6))
1273 {
2fa1ba3c 1274 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi", ServerBin);
b423cd4c 1275 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1276 }
1277 else if (!strncmp(con->uri, "/printers", 9))
1278 {
2fa1ba3c 1279 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi", ServerBin);
b423cd4c 1280 if (con->uri[9] && con->uri[10])
1281 cupsdSetString(&con->options, con->uri + 9);
1282 else
1283 cupsdSetString(&con->options, NULL);
ef416fc2 1284 }
1285 else if (!strncmp(con->uri, "/classes", 8))
1286 {
2fa1ba3c 1287 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi", ServerBin);
b423cd4c 1288 if (con->uri[8] && con->uri[9])
1289 cupsdSetString(&con->options, con->uri + 8);
1290 else
1291 cupsdSetString(&con->options, NULL);
ef416fc2 1292 }
1293 else if (!strncmp(con->uri, "/jobs", 5))
1294 {
2fa1ba3c 1295 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi", ServerBin);
b423cd4c 1296 if (con->uri[5] && con->uri[6])
1297 cupsdSetString(&con->options, con->uri + 5);
1298 else
1299 cupsdSetString(&con->options, NULL);
ef416fc2 1300 }
1301 else
1302 {
2fa1ba3c 1303 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi", ServerBin);
b423cd4c 1304 if (con->uri[5] && con->uri[6])
1305 cupsdSetString(&con->options, con->uri + 5);
1306 else
1307 cupsdSetString(&con->options, NULL);
1308 }
ef416fc2 1309
d21dc0ed 1310 if (httpGetVersion(con->http) <= HTTP_VERSION_1_0)
5ec1fd3d 1311 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
ef416fc2 1312 }
1313 else
1314 {
2fa1ba3c 1315 if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
ef416fc2 1316 {
2fa1ba3c
MS		 1317 cupsdCloseClient(con);
1318 return;
ef416fc2 1319 }
1320 }
1321 break;
1322
cb7f98ee 1323 case HTTP_STATE_PUT_RECV :
ef416fc2 1324 /*
1325 * Validate the resource name...
1326 */
1327
c41769ff 1328 if (strcmp(con->uri, "/admin/conf/cupsd.conf"))
ef416fc2 1329 {
1330 /*
c41769ff 1331 * PUT can only be done to the cupsd.conf file...
ef416fc2 1332 */
1333
2fa1ba3c 1334 cupsdLogClient(con, CUPSD_LOG_ERROR, "Disallowed PUT request for \"%s\".", con->uri);
bf3816c7 1335
5ec1fd3d 1336 if (!cupsdSendError(con, HTTP_STATUS_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1337 {
1338 cupsdCloseClient(con);
1339 return;
1340 }
ef416fc2 1341
1342 break;
1343 }
1344
1345 /*
1346 * See if the PUT request includes a Content-Length field, and if
1347 * so check the length against any limits that are set...
1348 */
1349
2fa1ba3c 1350 if (httpGetField(con->http, HTTP_FIELD_CONTENT_LENGTH)[0] && MaxRequestSize > 0 && httpGetLength2(con->http) > MaxRequestSize)
ef416fc2 1351 {
1352 /*
1353 * Request too large...
1354 */
1355
5ec1fd3d 1356 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1357 {
1358 cupsdCloseClient(con);
1359 return;
1360 }
ef416fc2 1361
1362 break;
1363 }
d21dc0ed 1364 else if (httpGetLength2(con->http) < 0)
ef416fc2 1365 {
1366 /*
1367 * Negative content lengths are invalid!
1368 */
1369
5ec1fd3d 1370 if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1371 {
1372 cupsdCloseClient(con);
1373 return;
1374 }
ef416fc2 1375
1376 break;
1377 }
1378
1379 /*
1380 * Open a temporary file to hold the request...
1381 */
1382
2fa1ba3c 1383 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
ef416fc2 1384 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1385
ef416fc2 1386 if (con->file < 0)
1387 {
2fa1ba3c 1388 cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to create request file \"%s\": %s", con->filename, strerror(errno));
a4924f6c 1389
5ec1fd3d 1390 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1391 {
1392 cupsdCloseClient(con);
1393 return;
1394 }
ef416fc2 1395 }
1396
1397 fchmod(con->file, 0640);
1398 fchown(con->file, RunUser, Group);
1399 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1400 break;
1401
cb7f98ee
MS		 1402 case HTTP_STATE_DELETE :
1403 case HTTP_STATE_TRACE :
5ec1fd3d 1404 cupsdSendError(con, HTTP_STATUS_NOT_IMPLEMENTED, CUPSD_AUTH_NONE);
f7deaa1a 1405 cupsdCloseClient(con);
1406 return;
ef416fc2 1407
cb7f98ee 1408 case HTTP_STATE_HEAD :
2fa1ba3c
MS		 1409 if ((filename = get_file(con, &filestats, buf, sizeof(buf))) != NULL)
1410 {
1411 if (!check_if_modified(con, &filestats))
ef416fc2 1412 {
2fa1ba3c 1413 if (!cupsdSendError(con, HTTP_STATUS_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1414 {
1415 cupsdCloseClient(con);
1416 return;
1417 }
ef416fc2 1418
2fa1ba3c 1419 cupsdLogRequest(con, HTTP_STATUS_NOT_MODIFIED);
ef416fc2 1420 }
229681c1
MS		 1421 else
1422 {
2fa1ba3c
MS		 1423 /*
1424 * Serve a file...
1425 */
1426
1427 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
1428 if (type == NULL)
1429 strlcpy(line, "text/plain", sizeof(line));
1430 else
1431 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1432
1433 httpClearFields(con->http);
1434
1435 httpSetField(con->http, HTTP_FIELD_LAST_MODIFIED, httpGetDateString(filestats.st_mtime));
1436 httpSetLength(con->http, (size_t)filestats.st_size);
1437
1438 if (!cupsdSendHeader(con, HTTP_STATUS_OK, line, CUPSD_AUTH_NONE))
229681c1
MS		 1439 {
1440 cupsdCloseClient(con);
1441 return;
1442 }
1443
2fa1ba3c 1444 cupsdLogRequest(con, HTTP_STATUS_OK);
229681c1 1445 }
2fa1ba3c 1446 }
229681c1
MS		 1447 else if (!WebInterface)
1448 {
a73ca01e
MS		 1449 httpClearFields(con->http);
1450
5ec1fd3d 1451 if (!cupsdSendHeader(con, HTTP_STATUS_OK, NULL, CUPSD_AUTH_NONE))
229681c1
MS		 1452 {
1453 cupsdCloseClient(con);
1454 return;
1455 }
1456
e200616a 1457 cupsdLogRequest(con, HTTP_STATUS_OK);
229681c1
MS		 1458 break;
1459 }
ef416fc2 1460
2fa1ba3c 1461 if (!strncmp(con->uri, "/admin", 6) || !strncmp(con->uri, "/printers", 9) || !strncmp(con->uri, "/classes", 8) || !strncmp(con->uri, "/help", 5) || !strncmp(con->uri, "/jobs", 5))
ef416fc2 1462 {
1463 /*
1464 * CGI output...
1465 */
1466
a73ca01e
MS		 1467 httpClearFields(con->http);
1468
5ec1fd3d 1469 if (!cupsdSendHeader(con, HTTP_STATUS_OK, "text/html", CUPSD_AUTH_NONE))
f7deaa1a 1470 {
1471 cupsdCloseClient(con);
1472 return;
1473 }
ef416fc2 1474
5ec1fd3d 1475 cupsdLogRequest(con, HTTP_STATUS_OK);
ef416fc2 1476 }
ef416fc2 1477 else
1478 {
a73ca01e
MS		 1479 httpClearFields(con->http);
1480
2fa1ba3c 1481 if (!cupsdSendHeader(con, HTTP_STATUS_NOT_FOUND, "text/html", CUPSD_AUTH_NONE))
f7deaa1a 1482 {
1483 cupsdCloseClient(con);
1484 return;
1485 }
ef416fc2 1486
2fa1ba3c 1487 cupsdLogRequest(con, HTTP_STATUS_NOT_FOUND);
ef416fc2 1488 }
ef416fc2 1489 break;
1490
1491 default :
1492 break; /* Anti-compiler-warning-code */
1493 }
1494 }
1495 }
1496
1497 /*
1498 * Handle any incoming data...
1499 */
1500
5ec1fd3d 1501 switch (httpGetState(con->http))
ef416fc2 1502 {
cb7f98ee 1503 case HTTP_STATE_PUT_RECV :
f7deaa1a 1504 do
ef416fc2 1505 {
996acce8 1506 if ((bytes = httpRead2(con->http, line, sizeof(line))) < 0)
f7deaa1a 1507 {
5ec1fd3d 1508 if (httpError(con->http) && httpError(con->http) != EPIPE)
996acce8
MS		 1509 cupsdLogClient(con, CUPSD_LOG_DEBUG,
1510 "HTTP_STATE_PUT_RECV Closing for error %d (%s)",
5ec1fd3d 1511 httpError(con->http), strerror(httpError(con->http)));
f11a948a 1512 else
996acce8
MS		 1513 cupsdLogClient(con, CUPSD_LOG_DEBUG,
1514 "HTTP_STATE_PUT_RECV Closing on EOF.");
f11a948a 1515
f7deaa1a 1516 cupsdCloseClient(con);
1517 return;
1518 }
1519 else if (bytes > 0)
1520 {
1521 con->bytes += bytes;
ef416fc2 1522
34c67f13
MS		 1523 if (MaxRequestSize > 0 && con->bytes > MaxRequestSize)
1524 {
1525 close(con->file);
1526 con->file = -1;
1527 unlink(con->filename);
1528 cupsdClearString(&con->filename);
1529
1530 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
1531 {
1532 cupsdCloseClient(con);
1533 return;
1534 }
1535 }
1536
7e86f2f6 1537 if (write(con->file, line, (size_t)bytes) < bytes)
f7deaa1a 1538 {
996acce8
MS		 1539 cupsdLogClient(con, CUPSD_LOG_ERROR,
1540 "Unable to write %d bytes to \"%s\": %s", bytes,
1541 con->filename, strerror(errno));
ef416fc2 1542
f7deaa1a 1543 close(con->file);
1544 con->file = -1;
1545 unlink(con->filename);
1546 cupsdClearString(&con->filename);
ef416fc2 1547
5ec1fd3d 1548 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1549 {
1550 cupsdCloseClient(con);
1551 return;
1552 }
1553 }
ef416fc2 1554 }
a4708bb0
MS		 1555 else if (httpGetState(con->http) == HTTP_STATE_PUT_RECV)
1556 {
1557 cupsdCloseClient(con);
1558 return;
1559 }
f7deaa1a 1560 }
5ec1fd3d 1561 while (httpGetState(con->http) == HTTP_STATE_PUT_RECV && httpGetReady(con->http));
ef416fc2 1562
5ec1fd3d 1563 if (httpGetState(con->http) == HTTP_STATE_STATUS)
ef416fc2 1564 {
1565 /*
1566 * End of file, see how big it is...
1567 */
1568
1569 fstat(con->file, &filestats);
1570
ef416fc2 1571 close(con->file);
1572 con->file = -1;
1573
1574 if (filestats.st_size > MaxRequestSize &&
1575 MaxRequestSize > 0)
1576 {
1577 /*
1578 * Request is too big; remove it and send an error...
1579 */
1580
ef416fc2 1581 unlink(con->filename);
1582 cupsdClearString(&con->filename);
1583
5ec1fd3d 1584 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1585 {
1586 cupsdCloseClient(con);
1587 return;
1588 }
ef416fc2 1589 }
1590
1591 /*
1592 * Install the configuration file...
1593 */
1594
c41769ff 1595 status = install_cupsd_conf(con);
ef416fc2 1596
1597 /*
1598 * Return the status to the client...
1599 */
1600
5bd77a73 1601 if (!cupsdSendError(con, status, CUPSD_AUTH_NONE))
f7deaa1a 1602 {
1603 cupsdCloseClient(con);
1604 return;
1605 }
ef416fc2 1606 }
1607 break;
1608
cb7f98ee 1609 case HTTP_STATE_POST_RECV :
f7deaa1a 1610 do
ef416fc2 1611 {
f11a948a 1612 if (con->request && con->file < 0)
ef416fc2 1613 {
f7deaa1a 1614 /*
1615 * Grab any request data from the connection...
1616 */
ef416fc2 1617
175bc798
MS		 1618 if (!httpWait(con->http, 0))
1619 return;
1620
5ec1fd3d 1621 if ((ipp_state = ippRead(con->http, con->request)) == IPP_STATE_ERROR)
ef416fc2 1622 {
996acce8
MS		 1623 cupsdLogClient(con, CUPSD_LOG_ERROR, "IPP read error: %s",
1624 cupsLastErrorString());
f7deaa1a 1625
5ec1fd3d 1626 cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 1627 cupsdCloseClient(con);
1628 return;
ef416fc2 1629 }
5ec1fd3d 1630 else if (ipp_state != IPP_STATE_DATA)
f7deaa1a 1631 {
5ec1fd3d 1632 if (httpGetState(con->http) == HTTP_STATE_POST_SEND)
f7deaa1a 1633 {
5ec1fd3d 1634 cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 1635 cupsdCloseClient(con);
1636 return;
1637 }
ef416fc2 1638
5ec1fd3d 1639 if (httpGetReady(con->http))
6961465f 1640 continue;
f7deaa1a 1641 break;
1642 }
1643 else
f11a948a 1644 {
996acce8
MS		 1645 cupsdLogClient(con, CUPSD_LOG_DEBUG, "%d.%d %s %d",
1646 con->request->request.op.version[0],
f11a948a
MS		 1647 con->request->request.op.version[1],
1648 ippOpString(con->request->request.op.operation_id),
1649 con->request->request.op.request_id);
7d5824d6 1650 con->bytes += (off_t)ippLength(con->request);
f11a948a 1651 }
f7deaa1a 1652 }
ef416fc2 1653
5ec1fd3d 1654 if (con->file < 0 && httpGetState(con->http) != HTTP_STATE_POST_SEND)
f7deaa1a 1655 {
1656 /*
1657 * Create a file as needed for the request data...
1658 */
ef416fc2 1659
f11a948a
MS		 1660 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1661 request_id ++);
f7deaa1a 1662 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
ef416fc2 1663
f7deaa1a 1664 if (con->file < 0)
1665 {
996acce8
MS		 1666 cupsdLogClient(con, CUPSD_LOG_ERROR,
1667 "Unable to create request file \"%s\": %s",
1668 con->filename, strerror(errno));
a4924f6c 1669
5ec1fd3d 1670 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1671 {
1672 cupsdCloseClient(con);
1673 return;
1674 }
1675 }
ef416fc2 1676
f7deaa1a 1677 fchmod(con->file, 0640);
1678 fchown(con->file, RunUser, Group);
1679 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1680 }
ef416fc2 1681
5ec1fd3d 1682 if (httpGetState(con->http) != HTTP_STATE_POST_SEND)
ef416fc2 1683 {
996acce8 1684 if (!httpWait(con->http, 0))
cb7f98ee 1685 return;
996acce8 1686 else if ((bytes = httpRead2(con->http, line, sizeof(line))) < 0)
f7deaa1a 1687 {
5ec1fd3d 1688 if (httpError(con->http) && httpError(con->http) != EPIPE)
996acce8
MS		 1689 cupsdLogClient(con, CUPSD_LOG_DEBUG,
1690 "HTTP_STATE_POST_SEND Closing for error %d (%s)",
5ec1fd3d 1691 httpError(con->http), strerror(httpError(con->http)));
f11a948a 1692 else
996acce8
MS		 1693 cupsdLogClient(con, CUPSD_LOG_DEBUG,
1694 "HTTP_STATE_POST_SEND Closing on EOF.");
f11a948a 1695
f7deaa1a 1696 cupsdCloseClient(con);
1697 return;
1698 }
1699 else if (bytes > 0)
1700 {
1701 con->bytes += bytes;
ef416fc2 1702
34c67f13
MS		 1703 if (MaxRequestSize > 0 && con->bytes > MaxRequestSize)
1704 {
1705 close(con->file);
1706 con->file = -1;
1707 unlink(con->filename);
1708 cupsdClearString(&con->filename);
1709
1710 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
1711 {
1712 cupsdCloseClient(con);
1713 return;
1714 }
1715 }
1716
7e86f2f6 1717 if (write(con->file, line, (size_t)bytes) < bytes)
f7deaa1a 1718 {
996acce8
MS		 1719 cupsdLogClient(con, CUPSD_LOG_ERROR,
1720 "Unable to write %d bytes to \"%s\": %s",
1721 bytes, con->filename, strerror(errno));
ef416fc2 1722
f7deaa1a 1723 close(con->file);
1724 con->file = -1;
1725 unlink(con->filename);
1726 cupsdClearString(&con->filename);
ef416fc2 1727
5ec1fd3d 1728 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE,
f11a948a 1729 CUPSD_AUTH_NONE))
f7deaa1a 1730 {
1731 cupsdCloseClient(con);
1732 return;
1733 }
1734 }
1735 }
5ec1fd3d 1736 else if (httpGetState(con->http) == HTTP_STATE_POST_RECV)
f7deaa1a 1737 return;
5ec1fd3d 1738 else if (httpGetState(con->http) != HTTP_STATE_POST_SEND)
f7deaa1a 1739 {
996acce8
MS		 1740 cupsdLogClient(con, CUPSD_LOG_DEBUG,
1741 "Closing on unexpected state %s.",
5ec1fd3d 1742 httpStateString(httpGetState(con->http)));
f7deaa1a 1743 cupsdCloseClient(con);
1744 return;
ef416fc2 1745 }
1746 }
f7deaa1a 1747 }
5ec1fd3d 1748 while (httpGetState(con->http) == HTTP_STATE_POST_RECV && httpGetReady(con->http));
ef416fc2 1749
5ec1fd3d 1750 if (httpGetState(con->http) == HTTP_STATE_POST_SEND)
ef416fc2 1751 {
1752 if (con->file >= 0)
1753 {
1754 fstat(con->file, &filestats);
1755
ef416fc2 1756 close(con->file);
1757 con->file = -1;
1758
1759 if (filestats.st_size > MaxRequestSize &&
1760 MaxRequestSize > 0)
1761 {
1762 /*
1763 * Request is too big; remove it and send an error...
1764 */
1765
ef416fc2 1766 unlink(con->filename);
1767 cupsdClearString(&con->filename);
1768
1769 if (con->request)
1770 {
1771 /*
1772 * Delete any IPP request data...
1773 */
1774
1775 ippDelete(con->request);
1776 con->request = NULL;
1777 }
1778
5ec1fd3d 1779 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1780 {
1781 cupsdCloseClient(con);
1782 return;
1783 }
ef416fc2 1784 }
f8b3a85b
MS		 1785 else if (filestats.st_size == 0)
1786 {
1787 /*
1788 * Don't allow empty file...
1789 */
1790
1791 unlink(con->filename);
1792 cupsdClearString(&con->filename);
1793 }
ef416fc2 1794
1795 if (con->command)
1796 {
1797 if (!cupsdSendCommand(con, con->command, con->options, 0))
1798 {
5ec1fd3d 1799 if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1800 {
1801 cupsdCloseClient(con);
1802 return;
1803 }
ef416fc2 1804 }
1805 else
5ec1fd3d 1806 cupsdLogRequest(con, HTTP_STATUS_OK);
ef416fc2 1807 }
1808 }
1809
1810 if (con->request)
f7deaa1a 1811 {
1812 cupsdProcessIPPRequest(con);
bc44d920 1813
1814 if (con->filename)
1815 {
bc44d920 1816 unlink(con->filename);
1817 cupsdClearString(&con->filename);
1818 }
1819
f7deaa1a 1820 return;
1821 }
ef416fc2 1822 }
1823 break;
1824
1825 default :
1826 break; /* Anti-compiler-warning-code */
1827 }
1828
5ec1fd3d 1829 if (httpGetState(con->http) == HTTP_STATE_WAITING)
3dfe78b3 1830 {
5ec1fd3d 1831 if (!httpGetKeepAlive(con->http))
f11a948a 1832 {
996acce8
MS		 1833 cupsdLogClient(con, CUPSD_LOG_DEBUG,
1834 "Closing because Keep-Alive is disabled.");
3dfe78b3 1835 cupsdCloseClient(con);
f11a948a 1836 }
3dfe78b3
MS		 1837 else
1838 {
1839 cupsArrayRemove(ActiveClients, con);
e4e37194 1840 cupsdSetBusyState(0);
3dfe78b3
MS		 1841 }
1842 }
ef416fc2 1843}
1844
1845
1846/*
1847 * 'cupsdSendCommand()' - Send output from a command via HTTP.
1848 */
1849
1850int /* O - 1 on success, 0 on failure */
1851cupsdSendCommand(
1852 cupsd_client_t *con, /* I - Client connection */
1853 char *command, /* I - Command to run */
1854 char *options, /* I - Command-line options */
1855 int root) /* I - Run as root? */
1856{
1857 int fd; /* Standard input file descriptor */
1858
1859
1860 if (con->filename)
ed486911 1861 {
ef416fc2 1862 fd = open(con->filename, O_RDONLY);
ef416fc2 1863
ed486911 1864 if (fd < 0)
1865 {
996acce8
MS		 1866 cupsdLogClient(con, CUPSD_LOG_ERROR,
1867 "Unable to open \"%s\" for reading: %s",
1868 con->filename ? con->filename : "/dev/null",
1869 strerror(errno));
ed486911 1870 return (0);
1871 }
ef416fc2 1872
ed486911 1873 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
1874 }
1875 else
1876 fd = -1;
ef416fc2 1877
e200616a
MS		 1878 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
1879 con->pipe_status = HTTP_STATUS_OK;
ef416fc2 1880
a73ca01e
MS		 1881 httpClearFields(con->http);
1882
ed486911 1883 if (fd >= 0)
1884 close(fd);
ef416fc2 1885
996acce8
MS		 1886 cupsdLogClient(con, CUPSD_LOG_INFO, "Started \"%s\" (pid=%d, file=%d)",
1887 command, con->pipe_pid, con->file);
ef416fc2 1888
1889 if (con->pipe_pid == 0)
1890 return (0);
1891
1892 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1893
f899b121 1894 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
ef416fc2 1895
996acce8 1896 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for CGI data.");
1bc82dd9 1897
ef416fc2 1898 con->sent_header = 0;
1899 con->file_ready = 0;
1900 con->got_fields = 0;
68b10830 1901 con->header_used = 0;
ef416fc2 1902
1903 return (1);
1904}
1905
1906
1907/*
1908 * 'cupsdSendError()' - Send an error message via HTTP.
1909 */
1910
1911int /* O - 1 if successful, 0 otherwise */
1912cupsdSendError(cupsd_client_t *con, /* I - Connection */
f899b121 1913 http_status_t code, /* I - Error code */
1914 int auth_type)/* I - Authentication type */
ef416fc2 1915{
f7c0e880
MS		 1916 char location[HTTP_MAX_VALUE]; /* Location field */
1917
1918
ffe32673 1919 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "cupsdSendError code=%d, auth_type=%d", code, auth_type);
b9faaae1 1920
4744bd90 1921#ifdef HAVE_SSL
1922 /*
1923 * Force client to upgrade for authentication if that is how the
1924 * server is configured...
1925 */
1926
5ec1fd3d
MS		 1927 if (code == HTTP_STATUS_UNAUTHORIZED &&
1928 DefaultEncryption == HTTP_ENCRYPTION_REQUIRED &&
1929 _cups_strcasecmp(httpGetHostname(con->http, NULL, 0), "localhost") &&
1930 !httpIsEncrypted(con->http))
4744bd90 1931 {
5ec1fd3d 1932 code = HTTP_STATUS_UPGRADE_REQUIRED;
4744bd90 1933 }
1934#endif /* HAVE_SSL */
1935
ef416fc2 1936 /*
1937 * Put the request in the access_log file...
1938 */
1939
1940 cupsdLogRequest(con, code);
1941
ef416fc2 1942 /*
1943 * To work around bugs in some proxies, don't use Keep-Alive for some
1944 * error messages...
f7deaa1a 1945 *
1946 * Kerberos authentication doesn't work without Keep-Alive, so
1947 * never disable it in that case.
ef416fc2 1948 */
1949
f7c0e880
MS		 1950 strlcpy(location, httpGetField(con->http, HTTP_FIELD_LOCATION), sizeof(location));
1951
a73ca01e
MS		 1952 httpClearFields(con->http);
1953
f7c0e880
MS		 1954 httpSetField(con->http, HTTP_FIELD_LOCATION, location);
1955
5ec1fd3d
MS		 1956 if (code >= HTTP_STATUS_BAD_REQUEST && con->type != CUPSD_AUTH_NEGOTIATE)
1957 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
ef416fc2 1958
d21dc0ed 1959 if (httpGetVersion(con->http) >= HTTP_VERSION_1_1 &&
5ec1fd3d 1960 httpGetKeepAlive(con->http) == HTTP_KEEPALIVE_OFF)
e200616a 1961 httpSetField(con->http, HTTP_FIELD_CONNECTION, "close");
ef416fc2 1962
5ec1fd3d 1963 if (code >= HTTP_STATUS_BAD_REQUEST)
ef416fc2 1964 {
1965 /*
1966 * Send a human-readable error message.
1967 */
1968
80ca4592 1969 char message[4096], /* Message for user */
1970 urltext[1024], /* URL redirection text */
1971 redirect[1024]; /* Redirection link */
ef416fc2 1972 const char *text; /* Status-specific text */
1973
80ca4592 1974
1975 redirect[0] = '\0';
1976
5ec1fd3d 1977 if (code == HTTP_STATUS_UNAUTHORIZED)
ef416fc2 1978 text = _cupsLangString(con->language,
1979 _("Enter your username and password or the "
1980 "root username and password to access this "
f7deaa1a 1981 "page. If you are using Kerberos authentication, "
1982 "make sure you have a valid Kerberos ticket."));
5ec1fd3d 1983 else if (code == HTTP_STATUS_UPGRADE_REQUIRED)
80ca4592 1984 {
1985 text = urltext;
1986
7cc71486
MS		 1987 snprintf(urltext, sizeof(urltext), _cupsLangString(con->language, _("You must access this page using the URL https://%s:%d%s.")), con->servername, con->serverport, con->uri);
1988
1989 snprintf(redirect, sizeof(redirect), "<META HTTP-EQUIV=\"Refresh\" CONTENT=\"3;URL=https://%s:%d%s\">\n", con->servername, con->serverport, con->uri);
80ca4592 1990 }
5ec1fd3d 1991 else if (code == HTTP_STATUS_CUPS_WEBIF_DISABLED)
229681c1
MS		 1992 text = _cupsLangString(con->language,
1993 _("The web interface is currently disabled. Run "
1994 "\"cupsctl WebInterface=yes\" to enable it."));
ef416fc2 1995 else
1996 text = "";
1997
1998 snprintf(message, sizeof(message),
745129be
MS		 1999 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" "
2000 "\"http://www.w3.org/TR/html4/loose.dtd\">\n"
ef416fc2 2001 "<HTML>\n"
2002 "<HEAD>\n"
2003 "\t<META HTTP-EQUIV=\"Content-Type\" "
2004 "CONTENT=\"text/html; charset=utf-8\">\n"
229681c1 2005 "\t<TITLE>%s - " CUPS_SVERSION "</TITLE>\n"
ef416fc2 2006 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2007 "HREF=\"/cups.css\">\n"
80ca4592 2008 "%s"
ef416fc2 2009 "</HEAD>\n"
2010 "<BODY>\n"
229681c1 2011 "<H1>%s</H1>\n"
ef416fc2 2012 "<P>%s</P>\n"
2013 "</BODY>\n"
2014 "</HTML>\n",
41e6c1f1
MS		 2015 _httpStatus(con->language, code), redirect,
2016 _httpStatus(con->language, code), text);
ef416fc2 2017
43dcaf3b
MS		 2018 /*
2019 * Send an error message back to the client. If the error code is a
2020 * 400 or 500 series, make sure the message contains some text, too!
2021 */
2022
2023 size_t length = strlen(message); /* Length of message */
e200616a 2024
43dcaf3b 2025 httpSetLength(con->http, length);
e200616a
MS		 2026
2027 if (!cupsdSendHeader(con, code, "text/html", auth_type))
ef416fc2 2028 return (0);
ebeb3268 2029
43dcaf3b
MS		 2030 if (httpWrite2(con->http, message, length) < 0)
2031 return (0);
2032
2033 if (httpFlushWrite(con->http) < 0)
ef416fc2 2034 return (0);
2035 }
e200616a
MS		 2036 else
2037 {
2038 httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0");
a469f8a5 2039
e200616a
MS		 2040 if (!cupsdSendHeader(con, code, NULL, auth_type))
2041 return (0);
2042 }
ef416fc2 2043
2044 return (1);
2045}
2046
2047
ef416fc2 2048/*
2049 * 'cupsdSendHeader()' - Send an HTTP request.
2050 */
2051
2052int /* O - 1 on success, 0 on failure */
f899b121 2053cupsdSendHeader(
2054 cupsd_client_t *con, /* I - Client to send to */
2055 http_status_t code, /* I - HTTP status code */
2056 char *type, /* I - MIME type of document */
2057 int auth_type) /* I - Type of authentication */
ef416fc2 2058{
5a738aea 2059 char auth_str[1024]; /* Authorization string */
f7deaa1a 2060
2061
f3211b6d
MS		 2062 cupsdLogClient(con, CUPSD_LOG_DEBUG, "cupsdSendHeader: code=%d, type=\"%s\", auth_type=%d", code, type, auth_type);
2063
4744bd90 2064 /*
2065 * Send the HTTP status header...
2066 */
2067
a73ca01e 2068 if (code == HTTP_STATUS_CUPS_WEBIF_DISABLED)
229681c1
MS		 2069 {
2070 /*
2071 * Treat our special "web interface is disabled" status as "200 OK" for web
2072 * browsers.
2073 */
2074
5ec1fd3d 2075 code = HTTP_STATUS_OK;
229681c1 2076 }
b423cd4c 2077
ef416fc2 2078 if (ServerHeader)
e200616a 2079 httpSetField(con->http, HTTP_FIELD_SERVER, ServerHeader);
5ec1fd3d
MS		 2080
2081 if (code == HTTP_STATUS_METHOD_NOT_ALLOWED)
e200616a 2082 httpSetField(con->http, HTTP_FIELD_ALLOW, "GET, HEAD, OPTIONS, POST, PUT");
ef416fc2 2083
5ec1fd3d 2084 if (code == HTTP_STATUS_UNAUTHORIZED)
ef416fc2 2085 {
5bd77a73 2086 if (auth_type == CUPSD_AUTH_NONE)
f899b121 2087 {
5bd77a73 2088 if (!con->best || con->best->type <= CUPSD_AUTH_NONE)
dcb445bc 2089 auth_type = cupsdDefaultAuthType();
f899b121 2090 else
2091 auth_type = con->best->type;
2092 }
f7deaa1a 2093
2094 auth_str[0] = '\0';
2095
e0660879 2096 if (auth_type == CUPSD_AUTH_BASIC)
e5fee178 2097 {
f7deaa1a 2098 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
e5fee178 2099 }
eac3a0a0 2100 else if (auth_type == CUPSD_AUTH_NEGOTIATE)
6961465f 2101 {
e5fee178 2102#if defined(SO_PEERCRED) && defined(AF_LOCAL)
5ec1fd3d 2103 if (httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL)
e5fee178 2104 strlcpy(auth_str, "PeerCred", sizeof(auth_str));
6961465f 2105 else
e5fee178 2106#endif /* SO_PEERCRED && AF_LOCAL */
f7deaa1a 2107 strlcpy(auth_str, "Negotiate", sizeof(auth_str));
6961465f 2108 }
f7deaa1a 2109
4feb1fe2 2110 if (con->best && auth_type != CUPSD_AUTH_NEGOTIATE && !con->is_browser && !_cups_strcasecmp(httpGetHostname(con->http, NULL, 0), "localhost"))
ef416fc2 2111 {
e07d4801
MS		 2112 /*
2113 * Add a "trc" (try root certification) parameter for local non-Kerberos
2114 * requests when the request requires system group membership - then the
2115 * client knows the root certificate can/should be used.
2116 *
7ec11630
MS		 2117 * Also, for macOS we also look for @AUTHKEY and add an "AuthRef key=foo"
2118 * method as needed...
e07d4801
MS		 2119 */
2120
10d09e33
MS		 2121 char *name, /* Current user name */
2122 *auth_key; /* Auth key buffer */
f7deaa1a 2123 size_t auth_size; /* Size of remaining buffer */
7ec11630 2124 int need_local = 1; /* Do we need to list "Local" method? */
f7deaa1a 2125
f7deaa1a 2126 auth_key = auth_str + strlen(auth_str);
7e86f2f6 2127 auth_size = sizeof(auth_str) - (size_t)(auth_key - auth_str);
f7deaa1a 2128
7ec11630
MS		 2129#if defined(SO_PEERCRED) && defined(AF_LOCAL)
2130 if (httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL)
2131 {
2132 strlcpy(auth_key, ", PeerCred", auth_size);
2133 auth_key += 10;
2134 auth_size -= 10;
2135 }
2136#endif /* SO_PEERCRED && AF_LOCAL */
2137
10d09e33
MS		 2138 for (name = (char *)cupsArrayFirst(con->best->names);
2139 name;
2140 name = (char *)cupsArrayNext(con->best->names))
f7deaa1a 2141 {
91bc88eb
MS		 2142 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "cupsdSendHeader: require \"%s\"", name);
2143
e07d4801 2144#ifdef HAVE_AUTHORIZATION_H
88f9aafc 2145 if (!_cups_strncasecmp(name, "@AUTHKEY(", 9))
f7deaa1a 2146 {
bf265b3a 2147 snprintf(auth_key, auth_size, ", AuthRef key=\"%s\", Local trc=\"y\"", name + 9);
7ec11630 2148 need_local = 0;
f7deaa1a 2149 /* end parenthesis is stripped in conf.c */
2150 break;
2151 }
e07d4801
MS		 2152 else
2153#endif /* HAVE_AUTHORIZATION_H */
88f9aafc 2154 if (!_cups_strcasecmp(name, "@SYSTEM"))
f7deaa1a 2155 {
e07d4801
MS		 2156#ifdef HAVE_AUTHORIZATION_H
2157 if (SystemGroupAuthKey)
bf265b3a 2158 snprintf(auth_key, auth_size, ", AuthRef key=\"%s\", Local trc=\"y\"", SystemGroupAuthKey);
e07d4801 2159 else
e07d4801 2160#endif /* HAVE_AUTHORIZATION_H */
bf265b3a 2161 strlcpy(auth_key, ", Local trc=\"y\"", auth_size);
7ec11630 2162 need_local = 0;
f7deaa1a 2163 break;
2164 }
2165 }
7ec11630
MS		 2166
2167 if (need_local)
91bc88eb 2168 strlcat(auth_key, ", Local", auth_size);
ef416fc2 2169 }
f7deaa1a 2170
bc44d920 2171 if (auth_str[0])
2172 {
996acce8 2173 cupsdLogClient(con, CUPSD_LOG_DEBUG, "WWW-Authenticate: %s", auth_str);
bc44d920 2174
e200616a 2175 httpSetField(con->http, HTTP_FIELD_WWW_AUTHENTICATE, auth_str);
bc44d920 2176 }
ef416fc2 2177 }
2178
e1d6a774 2179 if (con->language && strcmp(con->language->language, "C"))
e200616a 2180 httpSetField(con->http, HTTP_FIELD_CONTENT_LANGUAGE, con->language->language);
ef416fc2 2181
e1d6a774 2182 if (type)
ef416fc2 2183 {
2184 if (!strcmp(type, "text/html"))
e200616a
MS		 2185 httpSetField(con->http, HTTP_FIELD_CONTENT_TYPE, "text/html; charset=utf-8");
2186 else
2187 httpSetField(con->http, HTTP_FIELD_CONTENT_TYPE, type);
ef416fc2 2188 }
2189
e200616a 2190 return (!httpWriteResponse(con->http, code));
ef416fc2 2191}
2192
2193
2194/*
2195 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2196 */
2197
2198void
2199cupsdUpdateCGI(void)
2200{
2201 char *ptr, /* Pointer to end of line in buffer */
2202 message[1024]; /* Pointer to message text */
2203 int loglevel; /* Log level for message */
2204
2205
2206 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2207 message, sizeof(message))) != NULL)
f0ab5bff
MS		 2208 {
2209 if (loglevel == CUPSD_LOG_INFO)
2210 cupsdLogMessage(CUPSD_LOG_INFO, "%s", message);
2211
ef416fc2 2212 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2213 break;
f0ab5bff 2214 }
ef416fc2 2215
d09495fa 2216 if (ptr == NULL && !CGIStatusBuffer->bufused)
ef416fc2 2217 {
2218 /*
2219 * Fatal error on pipe - should never happen!
2220 */
2221
2222 cupsdLogMessage(CUPSD_LOG_CRIT,
2223 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2224 strerror(errno));
2225 }
2226}
2227
2228
2229/*
2230 * 'cupsdWriteClient()' - Write data to a client as needed.
2231 */
2232
f7deaa1a 2233void
ef416fc2 2234cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2235{
68b10830
MS		 2236 int bytes, /* Number of bytes written */
2237 field_col; /* Current column */
2238 char *bufptr, /* Pointer into buffer */
2239 *bufend; /* Pointer to end of buffer */
ef416fc2 2240 ipp_state_t ipp_state; /* IPP state value */
2241
2242
5ec1fd3d 2243 cupsdLogClient(con, CUPSD_LOG_DEBUG, "con->http=%p", con->http);
996acce8
MS		 2244 cupsdLogClient(con, CUPSD_LOG_DEBUG,
2245 "cupsdWriteClient "
2246 "error=%d, "
2247 "used=%d, "
2248 "state=%s, "
2249 "data_encoding=HTTP_ENCODING_%s, "
2250 "data_remaining=" CUPS_LLFMT ", "
2251 "response=%p(%s), "
2252 "pipe_pid=%d, "
2253 "file=%d",
5ec1fd3d
MS		 2254 httpError(con->http), (int)httpGetReady(con->http),
2255 httpStateString(httpGetState(con->http)),
d21dc0ed
MS		 2256 httpIsChunked(con->http) ? "CHUNKED" : "LENGTH",
2257 CUPS_LLCAST httpGetLength2(con->http),
996acce8 2258 con->response,
a73ca01e 2259 con->response ? ippStateString(ippGetState(con->request)) : "",
996acce8
MS		 2260 con->pipe_pid, con->file);
2261
5ec1fd3d
MS		 2262 if (httpGetState(con->http) != HTTP_STATE_GET_SEND &&
2263 httpGetState(con->http) != HTTP_STATE_POST_SEND)
8b116e60
MS		 2264 {
2265 /*
2266 * If we get called in the wrong state, then something went wrong with the
2267 * connection and we need to shut it down...
2268 */
2269
43dcaf3b 2270 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on unexpected HTTP write state %s.",
5ec1fd3d 2271 httpStateString(httpGetState(con->http)));
8b116e60 2272 cupsdCloseClient(con);
f7deaa1a 2273 return;
8b116e60 2274 }
f7deaa1a 2275
2276 if (con->pipe_pid)
2277 {
2278 /*
2279 * Make sure we select on the CGI output...
2280 */
2281
f899b121 2282 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
f7deaa1a 2283
996acce8 2284 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for CGI data.");
1bc82dd9 2285
f7deaa1a 2286 if (!con->file_ready)
2287 {
2288 /*
2289 * Try again later when there is CGI output available...
2290 */
2291
996acce8 2292 cupsdRemoveSelect(httpGetFd(con->http));
f7deaa1a 2293 return;
2294 }
2295
2296 con->file_ready = 0;
2297 }
ef416fc2 2298
209cc9b6
MS		 2299 bytes = (ssize_t)(sizeof(con->header) - (size_t)con->header_used);
2300
1720786e 2301 if (!con->pipe_pid && bytes > (ssize_t)httpGetRemaining(con->http))
209cc9b6
MS		 2302 {
2303 /*
2304 * Limit GET bytes to original size of file (STR #3265)...
2305 */
2306
2307 bytes = (ssize_t)httpGetRemaining(con->http);
2308 }
2309
5ec1fd3d 2310 if (con->response && con->response->state != IPP_STATE_DATA)
ef416fc2 2311 {
d21dc0ed 2312 size_t wused = httpGetPending(con->http); /* Previous write buffer use */
94436c5a
MS		 2313
2314 do
2315 {
2316 /*
2317 * Write a single attribute or the IPP message header...
2318 */
2319
996acce8 2320 ipp_state = ippWrite(con->http, con->response);
94436c5a
MS		 2321
2322 /*
2323 * If the write buffer has been flushed, stop buffering up attributes...
2324 */
2325
d21dc0ed 2326 if (httpGetPending(con->http) <= wused)
94436c5a
MS		 2327 break;
2328 }
2329 while (ipp_state != IPP_STATE_DATA && ipp_state != IPP_STATE_ERROR);
2330
996acce8
MS		 2331 cupsdLogClient(con, CUPSD_LOG_DEBUG,
2332 "Writing IPP response, ipp_state=%s, old "
d21dc0ed
MS		 2333 "wused=" CUPS_LLFMT ", new wused=" CUPS_LLFMT,
2334 ippStateString(ipp_state),
2335 CUPS_LLCAST wused, CUPS_LLCAST httpGetPending(con->http));
2336
2337 if (httpGetPending(con->http) > 0)
996acce8 2338 httpFlushWrite(con->http);
94436c5a
MS		 2339
2340 bytes = ipp_state != IPP_STATE_ERROR &&
2341 (con->file >= 0 || ipp_state != IPP_STATE_DATA);
21f36711 2342
996acce8
MS		 2343 cupsdLogClient(con, CUPSD_LOG_DEBUG,
2344 "bytes=%d, http_state=%d, data_remaining=" CUPS_LLFMT,
5ec1fd3d 2345 (int)bytes, httpGetState(con->http),
d21dc0ed 2346 CUPS_LLCAST httpGetLength2(con->http));
ef416fc2 2347 }
209cc9b6 2348 else if ((bytes = read(con->file, con->header + con->header_used, (size_t)bytes)) > 0)
ef416fc2 2349 {
68b10830
MS		 2350 con->header_used += bytes;
2351
ef416fc2 2352 if (con->pipe_pid && !con->got_fields)
2353 {
2354 /*
2355 * Inspect the data for Content-Type and other fields.
2356 */
2357
68b10830
MS		 2358 for (bufptr = con->header, bufend = con->header + con->header_used,
2359 field_col = 0;
2360 !con->got_fields && bufptr < bufend;
2361 bufptr ++)
d1c13e16 2362 {
ef416fc2 2363 if (*bufptr == '\n')
2364 {
2365 /*
2366 * Send line to client...
2367 */
2368
68b10830 2369 if (bufptr > con->header && bufptr[-1] == '\r')
ef416fc2 2370 bufptr[-1] = '\0';
2371 *bufptr++ = '\0';
2372
996acce8 2373 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Script header: %s", con->header);
ef416fc2 2374
2375 if (!con->sent_header)
2376 {
2377 /*
2378 * Handle redirection and CGI status codes...
2379 */
2380
e200616a
MS		 2381 http_field_t field; /* HTTP field */
2382 char *value = strchr(con->header, ':');
2383 /* Value of field */
2384
2385 if (value)
d6ae789d 2386 {
e200616a
MS		 2387 *value++ = '\0';
2388 while (isspace(*value & 255))
2389 value ++;
2390 }
321d8d57 2391
e200616a 2392 field = httpFieldValue(con->header);
07725fee 2393
e200616a
MS		 2394 if (field != HTTP_FIELD_UNKNOWN && value)
2395 {
2396 httpSetField(con->http, field, value);
2397
2398 if (field == HTTP_FIELD_LOCATION)
2399 {
2400 con->pipe_status = HTTP_STATUS_SEE_OTHER;
2401 con->sent_header = 2;
2402 }
2403 else
2404 con->sent_header = 1;
d6ae789d 2405 }
e200616a 2406 else if (!_cups_strcasecmp(con->header, "Status") && value)
07725fee 2407 {
e200616a 2408 con->pipe_status = (http_status_t)atoi(value);
07725fee 2409 con->sent_header = 2;
2410 }
e200616a 2411 else if (!_cups_strcasecmp(con->header, "Set-Cookie") && value)
4744bd90 2412 {
e200616a
MS		 2413 httpSetCookie(con->http, value);
2414 con->sent_header = 1;
2415 }
ef416fc2 2416 }
2417
ef416fc2 2418 /*
2419 * Update buffer...
2420 */
2421
68b10830 2422 con->header_used -= bufptr - con->header;
d1c13e16 2423
68b10830 2424 if (con->header_used > 0)
07623986 2425 memmove(con->header, bufptr, (size_t)con->header_used);
d1c13e16 2426
68b10830 2427 bufptr = con->header - 1;
ef416fc2 2428
2429 /*
2430 * See if the line was empty...
2431 */
2432
68b10830 2433 if (field_col == 0)
d09495fa 2434 {
ef416fc2 2435 con->got_fields = 1;
d09495fa 2436
e200616a
MS		 2437 if (httpGetVersion(con->http) == HTTP_VERSION_1_1 &&
2438 !httpGetField(con->http, HTTP_FIELD_CONTENT_LENGTH)[0])
2439 httpSetLength(con->http, 0);
2440
f3211b6d
MS		 2441 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Sending status %d for CGI.", con->pipe_status);
2442
6abe9327 2443 if (con->pipe_status == HTTP_STATUS_OK)
07725fee 2444 {
6abe9327
MS		 2445 if (!cupsdSendHeader(con, con->pipe_status, NULL, CUPSD_AUTH_NONE))
2446 {
2447 cupsdCloseClient(con);
2448 return;
2449 }
2450 }
2451 else
2452 {
2453 if (!cupsdSendError(con, con->pipe_status, CUPSD_AUTH_NONE))
2454 {
2455 cupsdCloseClient(con);
2456 return;
2457 }
07725fee 2458 }
d09495fa 2459 }
ef416fc2 2460 else
68b10830 2461 field_col = 0;
ef416fc2 2462 }
2463 else if (*bufptr != '\r')
68b10830 2464 field_col ++;
d1c13e16 2465 }
ef416fc2 2466
68b10830 2467 if (!con->got_fields)
47879b8b 2468 return;
ef416fc2 2469 }
2470
68b10830 2471 if (con->header_used > 0)
ef416fc2 2472 {
7e86f2f6 2473 if (httpWrite2(con->http, con->header, (size_t)con->header_used) < 0)
4744bd90 2474 {
996acce8 2475 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing for error %d (%s)",
5ec1fd3d 2476 httpError(con->http), strerror(httpError(con->http)));
4744bd90 2477 cupsdCloseClient(con);
f7deaa1a 2478 return;
4744bd90 2479 }
ef416fc2 2480
d21dc0ed 2481 if (httpIsChunked(con->http))
996acce8 2482 httpFlushWrite(con->http);
ae71f5de 2483
68b10830 2484 con->bytes += con->header_used;
ef416fc2 2485
5ec1fd3d 2486 if (httpGetState(con->http) == HTTP_STATE_WAITING)
4744bd90 2487 bytes = 0;
68b10830
MS		 2488 else
2489 bytes = con->header_used;
2490
2491 con->header_used = 0;
4744bd90 2492 }
ef416fc2 2493 }
2494
8b116e60 2495 if (bytes <= 0 ||
5ec1fd3d
MS		 2496 (httpGetState(con->http) != HTTP_STATE_GET_SEND &&
2497 httpGetState(con->http) != HTTP_STATE_POST_SEND))
ef416fc2 2498 {
38e73f87 2499 if (!con->sent_header && con->pipe_pid)
5ec1fd3d 2500 cupsdSendError(con, HTTP_STATUS_SERVER_ERROR, CUPSD_AUTH_NONE);
94da7e34
MS		 2501 else
2502 {
5ec1fd3d 2503 cupsdLogRequest(con, HTTP_STATUS_OK);
ef416fc2 2504
f3211b6d 2505 if (httpIsChunked(con->http) && (!con->pipe_pid || con->sent_header > 0))
ef416fc2 2506 {
dfc45c1b
MS		 2507 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Sending 0-length chunk.");
2508
996acce8 2509 if (httpWrite2(con->http, "", 0) < 0)
94da7e34 2510 {
996acce8 2511 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing for error %d (%s)",
5ec1fd3d 2512 httpError(con->http), strerror(httpError(con->http)));
94da7e34
MS		 2513 cupsdCloseClient(con);
2514 return;
2515 }
ef416fc2 2516 }
dfc45c1b
MS		 2517
2518 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Flushing write buffer.");
2519 httpFlushWrite(con->http);
2520 cupsdLogClient(con, CUPSD_LOG_DEBUG, "New state is %s", httpStateString(httpGetState(con->http)));
ef416fc2 2521 }
2522
996acce8 2523 cupsdAddSelect(httpGetFd(con->http), (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 2524
996acce8 2525 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for request.");
1bc82dd9 2526
ef416fc2 2527 if (con->file >= 0)
2528 {
f7deaa1a 2529 cupsdRemoveSelect(con->file);
ef416fc2 2530
2531 if (con->pipe_pid)
2532 cupsdEndProcess(con->pipe_pid, 0);
2533
ef416fc2 2534 close(con->file);
2535 con->file = -1;
2536 con->pipe_pid = 0;
2537 }
2538
2539 if (con->filename)
2540 {
ef416fc2 2541 unlink(con->filename);
2542 cupsdClearString(&con->filename);
2543 }
2544
2abf387c 2545 if (con->request)
ef416fc2 2546 {
2547 ippDelete(con->request);
2548 con->request = NULL;
2549 }
2550
2abf387c 2551 if (con->response)
ef416fc2 2552 {
2553 ippDelete(con->response);
2554 con->response = NULL;
2555 }
2556
2557 cupsdClearString(&con->command);
2558 cupsdClearString(&con->options);
b86bc4cf 2559 cupsdClearString(&con->query_string);
ef416fc2 2560
5ec1fd3d 2561 if (!httpGetKeepAlive(con->http))
ef416fc2 2562 {
996acce8
MS		 2563 cupsdLogClient(con, CUPSD_LOG_DEBUG,
2564 "Closing because Keep-Alive is disabled.");
ef416fc2 2565 cupsdCloseClient(con);
f7deaa1a 2566 return;
ef416fc2 2567 }
f11a948a
MS		 2568 else
2569 {
2570 cupsArrayRemove(ActiveClients, con);
e4e37194 2571 cupsdSetBusyState(0);
f11a948a 2572 }
ef416fc2 2573 }
f7deaa1a 2574}
ef416fc2 2575
f7deaa1a 2576
e1d6a774 2577/*
2578 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2579 */
2580
2581static int /* O - 1 if modified since */
2582check_if_modified(
2583 cupsd_client_t *con, /* I - Client connection */
2584 struct stat *filestats) /* I - File information */
2585{
5ec1fd3d 2586 const char *ptr; /* Pointer into field */
e1d6a774 2587 time_t date; /* Time/date value */
2588 off_t size; /* Size/length value */
2589
2590
2591 size = 0;
2592 date = 0;
5ec1fd3d 2593 ptr = httpGetField(con->http, HTTP_FIELD_IF_MODIFIED_SINCE);
e1d6a774 2594
2595 if (*ptr == '\0')
2596 return (1);
2597
ffe32673 2598 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "check_if_modified: filestats=%p(" CUPS_LLFMT ", %d)) If-Modified-Since=\"%s\"", filestats, CUPS_LLCAST filestats->st_size, (int)filestats->st_mtime, ptr);
e1d6a774 2599
2600 while (*ptr != '\0')
2601 {
2602 while (isspace(*ptr) || *ptr == ';')
2603 ptr ++;
2604
88f9aafc 2605 if (_cups_strncasecmp(ptr, "length=", 7) == 0)
e1d6a774 2606 {
2607 ptr += 7;
2608 size = strtoll(ptr, NULL, 10);
2609
2610 while (isdigit(*ptr))
2611 ptr ++;
2612 }
2613 else if (isalpha(*ptr))
2614 {
2615 date = httpGetDateTime(ptr);
2616 while (*ptr != '\0' && *ptr != ';')
2617 ptr ++;
2618 }
e53920b9 2619 else
2620 ptr ++;
e1d6a774 2621 }
2622
e1d6a774 2623 return ((size != filestats->st_size && size != 0) ||
2624 (date < filestats->st_mtime && date != 0) ||
2625 (size == 0 && date == 0));
2626}
2627
2628
3dfe78b3
MS		 2629/*
2630 * 'compare_clients()' - Compare two client connections.
2631 */
2632
2633static int /* O - Result of comparison */
2634compare_clients(cupsd_client_t *a, /* I - First client */
2635 cupsd_client_t *b, /* I - Second client */
2636 void *data) /* I - User data (not used) */
2637{
2638 (void)data;
2639
2640 if (a == b)
2641 return (0);
2642 else if (a < b)
2643 return (-1);
2644 else
2645 return (1);
2646}
2647
2648
d3d89474
MS		 2649#ifdef HAVE_SSL
2650/*
2651 * 'cupsd_start_tls()' - Start encryption on a connection.
2652 */
2653
2654static int /* O - 0 on success, -1 on error */
2655cupsd_start_tls(cupsd_client_t *con, /* I - Client connection */
2656 http_encryption_t e) /* I - Encryption mode */
2657{
d3d89474
MS		 2658 if (httpEncryption(con->http, e))
2659 {
2660 cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to encrypt connection: %s",
2661 cupsLastErrorString());
2662 return (-1);
2663 }
2664
8719e9db 2665 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Connection now encrypted.");
d3d89474
MS		 2666 return (0);
2667}
2668#endif /* HAVE_SSL */
2669
2670
ef416fc2 2671/*
2672 * 'get_file()' - Get a filename and state info.
2673 */
2674
2675static char * /* O - Real filename */
2676get_file(cupsd_client_t *con, /* I - Client connection */
2677 struct stat *filestats, /* O - File information */
2678 char *filename, /* IO - Filename buffer */
07623986 2679 size_t len) /* I - Buffer length */
ef416fc2 2680{
2681 int status; /* Status of filesystem calls */
2682 char *ptr; /* Pointer info filename */
07623986 2683 size_t plen; /* Remaining length after pointer */
d8a60ef8
MS		 2684 char language[7], /* Language subdirectory, if any */
2685 dest[1024]; /* Destination name */
112fc3c0 2686 int perm_check = 1; /* Do permissions check? */
2fa1ba3c 2687 cupsd_printer_t *p; /* Printer */
ef416fc2 2688
2689
2690 /*
f7deaa1a 2691 * Figure out the real filename...
ef416fc2 2692 */
2693
db1f069b
MS		 2694 language[0] = '\0';
2695
bd880c0c
MS		 2696 if (!strncmp(con->uri, "/help", 5) && (con->uri[5] == '/' || !con->uri[5]))
2697 {
2698 /*
2699 * All help files are served by the help.cgi program...
2700 */
2701
2702 return (NULL);
2703 }
2704 else if ((!strncmp(con->uri, "/ppd/", 5) || !strncmp(con->uri, "/printers/", 10) || !strncmp(con->uri, "/classes/", 9)) && !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
112fc3c0 2705 {
2fa1ba3c
MS		 2706 strlcpy(dest, strchr(con->uri + 1, '/') + 1, sizeof(dest));
2707 dest[strlen(dest) - 4] = '\0'; /* Strip .ppd */
d8a60ef8 2708
2fa1ba3c 2709 if ((p = cupsdFindDest(dest)) == NULL)
d8a60ef8 2710 {
2fa1ba3c 2711 cupsdLogClient(con, CUPSD_LOG_INFO, "No destination \"%s\" found.", dest);
d8a60ef8
MS		 2712 return (NULL);
2713 }
2714
2fa1ba3c 2715 if (p->type & CUPS_PRINTER_CLASS)
d8a60ef8 2716 {
2fa1ba3c 2717 int i; /* Looping var */
d8a60ef8 2718
2fa1ba3c
MS		 2719 for (i = 0; i < p->num_printers; i ++)
2720 {
2721 if (!(p->printers[i]->type & CUPS_PRINTER_CLASS))
2722 {
2723 snprintf(filename, len, "%s/ppd/%s.ppd", ServerRoot, p->printers[i]->name);
2724 if (!access(filename, 0))
2725 {
2726 p = p->printers[i];
2727 break;
2728 }
2729 }
2730 }
2731
2732 if (i >= p->num_printers)
2733 p = NULL;
2734 }
2735 else
2736 snprintf(filename, len, "%s/ppd/%s.ppd", ServerRoot, p->name);
112fc3c0
MS		 2737
2738 perm_check = 0;
2739 }
2fa1ba3c 2740 else if ((!strncmp(con->uri, "/icons/", 7) || !strncmp(con->uri, "/printers/", 10) || !strncmp(con->uri, "/classes/", 9)) && !strcmp(con->uri + strlen(con->uri) - 4, ".png"))
7cf5915e 2741 {
2fa1ba3c
MS		 2742 strlcpy(dest, strchr(con->uri + 1, '/') + 1, sizeof(dest));
2743 dest[strlen(dest) - 4] = '\0'; /* Strip .png */
d8a60ef8 2744
2fa1ba3c 2745 if ((p = cupsdFindDest(dest)) == NULL)
d8a60ef8 2746 {
2fa1ba3c 2747 cupsdLogClient(con, CUPSD_LOG_INFO, "No destination \"%s\" found.", dest);
d8a60ef8
MS		 2748 return (NULL);
2749 }
2750
2fa1ba3c 2751 if (p->type & CUPS_PRINTER_CLASS)
d8a60ef8 2752 {
2fa1ba3c
MS		 2753 int i; /* Looping var */
2754
2755 for (i = 0; i < p->num_printers; i ++)
2756 {
2757 if (!(p->printers[i]->type & CUPS_PRINTER_CLASS))
2758 {
2759 snprintf(filename, len, "%s/images/%s.png", CacheDir, p->printers[i]->name);
2760 if (!access(filename, 0))
2761 {
2762 p = p->printers[i];
2763 break;
2764 }
2765 }
2766 }
2767
2768 if (i >= p->num_printers)
2769 p = NULL;
d8a60ef8 2770 }
2fa1ba3c
MS		 2771 else
2772 snprintf(filename, len, "%s/images/%s.png", CacheDir, p->name);
d8a60ef8 2773
7cf5915e
MS		 2774 if (access(filename, F_OK) < 0)
2775 snprintf(filename, len, "%s/images/generic.png", DocumentRoot);
112fc3c0
MS		 2776
2777 perm_check = 0;
7cf5915e 2778 }
f7deaa1a 2779 else if (!strncmp(con->uri, "/rss/", 5) && !strchr(con->uri + 5, '/'))
2780 snprintf(filename, len, "%s/rss/%s", CacheDir, con->uri + 5);
2fa1ba3c
MS		 2781 else if (!strncmp(con->uri, "/strings/", 9) && !strcmp(con->uri + strlen(con->uri) - 8, ".strings"))
2782 {
2783 strlcpy(dest, con->uri + 9, sizeof(dest));
2784 dest[strlen(dest) - 8] = '\0';
2785
2786 if ((p = cupsdFindDest(dest)) == NULL)
2787 {
2788 cupsdLogClient(con, CUPSD_LOG_INFO, "No destination \"%s\" found.", dest);
2789 return (NULL);
2790 }
2791
2792 if (!p->strings)
2793 {
2794 cupsdLogClient(con, CUPSD_LOG_INFO, "No strings files for \"%s\".", dest);
2795 return (NULL);
2796 }
2797
2798 strlcpy(filename, p->strings, len);
2799
2800 perm_check = 0;
2801 }
112fc3c0
MS		 2802 else if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
2803 {
2804 strlcpy(filename, ConfigurationFile, len);
2805
2806 perm_check = 0;
2807 }
ef416fc2 2808 else if (!strncmp(con->uri, "/admin/log/", 11))
2809 {
2e4ff8af 2810 if (!strncmp(con->uri + 11, "access_log", 10) && AccessLog[0] == '/')
ef416fc2 2811 strlcpy(filename, AccessLog, len);
2e4ff8af 2812 else if (!strncmp(con->uri + 11, "error_log", 9) && ErrorLog[0] == '/')
ef416fc2 2813 strlcpy(filename, ErrorLog, len);
2e4ff8af 2814 else if (!strncmp(con->uri + 11, "page_log", 8) && PageLog[0] == '/')
ef416fc2 2815 strlcpy(filename, PageLog, len);
2816 else
2817 return (NULL);
112fc3c0
MS		 2818
2819 perm_check = 0;
ef416fc2 2820 }
d6ae789d 2821 else if (con->language)
db1f069b
MS		 2822 {
2823 snprintf(language, sizeof(language), "/%s", con->language->language);
2824 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
2825 }
ef416fc2 2826 else
2827 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2828
2829 if ((ptr = strchr(filename, '?')) != NULL)
2830 *ptr = '\0';
2831
2832 /*
2833 * Grab the status for this language; if there isn't a language-specific file
2834 * then fallback to the default one...
2835 */
2836
9e92ab19 2837 if ((status = lstat(filename, filestats)) != 0 && language[0] &&
7cf5915e 2838 strncmp(con->uri, "/icons/", 7) &&
d6ae789d 2839 strncmp(con->uri, "/ppd/", 5) &&
7cf5915e 2840 strncmp(con->uri, "/rss/", 5) &&
2fa1ba3c 2841 strncmp(con->uri, "/strings/", 9) &&
d6ae789d 2842 strncmp(con->uri, "/admin/conf/", 12) &&
2843 strncmp(con->uri, "/admin/log/", 11))
ef416fc2 2844 {
2845 /*
d6ae789d 2846 * Drop the country code...
ef416fc2 2847 */
2848
db1f069b
MS		 2849 language[3] = '\0';
2850 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
d6ae789d 2851
2852 if ((ptr = strchr(filename, '?')) != NULL)
2853 *ptr = '\0';
2854
36618f45 2855 if ((status = lstat(filename, filestats)) != 0)
ef416fc2 2856 {
d6ae789d 2857 /*
2858 * Drop the language prefix and try the root directory...
2859 */
2860
db1f069b 2861 language[0] = '\0';
ef416fc2 2862 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2863
2864 if ((ptr = strchr(filename, '?')) != NULL)
2865 *ptr = '\0';
2866
36618f45 2867 status = lstat(filename, filestats);
ef416fc2 2868 }
2869 }
2870
2871 /*
36618f45
MS		 2872 * If we've found a symlink, 404 the sucker to avoid disclosing information.
2873 */
2874
2875 if (!status && S_ISLNK(filestats->st_mode))
2876 {
2877 cupsdLogClient(con, CUPSD_LOG_INFO, "Symlinks such as \"%s\" are not allowed.", filename);
2878 return (NULL);
2879 }
2880
2881 /*
2882 * Similarly, if the file/directory does not have world read permissions, do
2883 * not allow access...
2884 */
2885
112fc3c0 2886 if (!status && perm_check && !(filestats->st_mode & S_IROTH))
36618f45
MS		 2887 {
2888 cupsdLogClient(con, CUPSD_LOG_INFO, "Files/directories such as \"%s\" must be world-readable.", filename);
2889 return (NULL);
2890 }
2891
2892 /*
2893 * If we've found a directory, get the index.html file instead...
ef416fc2 2894 */
2895
2896 if (!status && S_ISDIR(filestats->st_mode))
2897 {
db1f069b
MS		 2898 /*
2899 * Make sure the URI ends with a slash...
2900 */
ef416fc2 2901
db1f069b
MS		 2902 if (con->uri[strlen(con->uri) - 1] != '/')
2903 strlcat(con->uri, "/", sizeof(con->uri));
ef416fc2 2904
db1f069b
MS		 2905 /*
2906 * Find the directory index file, trying every language...
2907 */
ef416fc2 2908
db1f069b 2909 do
ef416fc2 2910 {
db1f069b
MS		 2911 if (status && language[0])
2912 {
2913 /*
2914 * Try a different language subset...
2915 */
2916
2917 if (language[3])
2918 language[0] = '\0'; /* Strip country code */
2919 else
2920 language[0] = '\0'; /* Strip language */
2921 }
2922
2923 /*
2924 * Look for the index file...
2925 */
2926
2927 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
2928
2929 if ((ptr = strchr(filename, '?')) != NULL)
2930 *ptr = '\0';
2931
2932 ptr = filename + strlen(filename);
07623986 2933 plen = len - (size_t)(ptr - filename);
db1f069b
MS		 2934
2935 strlcpy(ptr, "index.html", plen);
9e92ab19 2936 status = lstat(filename, filestats);
db1f069b
MS		 2937 }
2938 while (status && language[0]);
9e92ab19
MS		 2939
2940 /*
2941 * If we've found a symlink, 404 the sucker to avoid disclosing information.
2942 */
2943
2944 if (!status && S_ISLNK(filestats->st_mode))
2945 {
2946 cupsdLogClient(con, CUPSD_LOG_INFO, "Symlinks such as \"%s\" are not allowed.", filename);
2947 return (NULL);
2948 }
2e667a52
MS		 2949
2950 /*
2951 * Similarly, if the file/directory does not have world read permissions, do
2952 * not allow access...
2953 */
2954
112fc3c0 2955 if (!status && perm_check && !(filestats->st_mode & S_IROTH))
2e667a52
MS		 2956 {
2957 cupsdLogClient(con, CUPSD_LOG_INFO, "Files/directories such as \"%s\" must be world-readable.", filename);
2958 return (NULL);
2959 }
ef416fc2 2960 }
2961
ffe32673 2962 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "get_file: filestats=%p, filename=%p, len=" CUPS_LLFMT ", returning \"%s\".", filestats, filename, CUPS_LLCAST len, status ? "(null)" : filename);
ef416fc2 2963
ef416fc2 2964 if (status)
2965 return (NULL);
2966 else
2967 return (filename);
2968}
2969
2970
2971/*
c41769ff 2972 * 'install_cupsd_conf()' - Install a configuration file.
ef416fc2 2973 */
2974
2975static http_status_t /* O - Status */
c41769ff 2976install_cupsd_conf(cupsd_client_t *con) /* I - Connection */
ef416fc2 2977{
321d8d57 2978 char filename[1024]; /* Configuration filename */
ef416fc2 2979 cups_file_t *in, /* Input file */
2980 *out; /* Output file */
321d8d57
MS		 2981 char buffer[16384]; /* Copy buffer */
2982 ssize_t bytes; /* Number of bytes */
ef416fc2 2983
2984
2985 /*
321d8d57 2986 * Open the request file...
ef416fc2 2987 */
2988
321d8d57 2989 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
ef416fc2 2990 {
996acce8 2991 cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to open request file \"%s\": %s",
321d8d57 2992 con->filename, strerror(errno));
eb93498a 2993 goto server_error;
ef416fc2 2994 }
2995
2996 /*
321d8d57 2997 * Open the new config file...
ef416fc2 2998 */
2999
cb7f98ee 3000 if ((out = cupsdCreateConfFile(ConfigurationFile, ConfigFilePerm)) == NULL)
ef416fc2 3001 {
3002 cupsFileClose(in);
eb93498a 3003 goto server_error;
ef416fc2 3004 }
3005
996acce8 3006 cupsdLogClient(con, CUPSD_LOG_INFO, "Installing config file \"%s\"...",
cb7f98ee 3007 ConfigurationFile);
ef416fc2 3008
3009 /*
3010 * Copy from the request to the new config file...
3011 */
3012
3013 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
7e86f2f6 3014 if (cupsFileWrite(out, buffer, (size_t)bytes) < bytes)
ef416fc2 3015 {
996acce8 3016 cupsdLogClient(con, CUPSD_LOG_ERROR,
321d8d57 3017 "Unable to copy to config file \"%s\": %s",
cb7f98ee 3018 ConfigurationFile, strerror(errno));
ef416fc2 3019
3020 cupsFileClose(in);
3021 cupsFileClose(out);
321d8d57 3022
cb7f98ee
MS		 3023 snprintf(filename, sizeof(filename), "%s.N", ConfigurationFile);
3024 cupsdUnlinkOrRemoveFile(filename);
ef416fc2 3025
eb93498a 3026 goto server_error;
ef416fc2 3027 }
3028
3029 /*
3030 * Close the files...
3031 */
3032
3033 cupsFileClose(in);
ef416fc2 3034
cb7f98ee 3035 if (cupsdCloseCreatedConfFile(out, ConfigurationFile))
eb93498a 3036 goto server_error;
ef416fc2 3037
3038 /*
3039 * Remove the request file...
3040 */
3041
cb7f98ee 3042 cupsdUnlinkOrRemoveFile(con->filename);
ef416fc2 3043 cupsdClearString(&con->filename);
3044
ef416fc2 3045 /*
c41769ff 3046 * Set the NeedReload flag...
ef416fc2 3047 */
3048
c41769ff 3049 NeedReload = RELOAD_CUPSD;
ef416fc2 3050 ReloadTime = time(NULL);
3051
3052 /*
3053 * Return that the file was created successfully...
3054 */
3055
5ec1fd3d 3056 return (HTTP_STATUS_CREATED);
eb93498a
MS		 3057
3058 /*
3059 * Common exit for errors...
3060 */
3061
3062 server_error:
3063
3064 cupsdUnlinkOrRemoveFile(con->filename);
3065 cupsdClearString(&con->filename);
3066
3067 return (HTTP_STATUS_SERVER_ERROR);
ef416fc2 3068}
3069
3070
e1d6a774 3071/*
3072 * 'is_cgi()' - Is the resource a CGI script/program?
3073 */
3074
3075static int /* O - 1 = CGI, 0 = file */
3076is_cgi(cupsd_client_t *con, /* I - Client connection */
3077 const char *filename, /* I - Real filename */
3078 struct stat *filestats, /* I - File information */
3079 mime_type_t *type) /* I - MIME type */
3080{
3081 const char *options; /* Options on URL */
3082
3083
e1d6a774 3084 /*
3085 * Get the options, if any...
3086 */
3087
3088 if ((options = strchr(con->uri, '?')) != NULL)
a0f6818e
MS		 3089 {
3090 options ++;
3091 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", options);
3092 }
b86bc4cf 3093
e1d6a774 3094 /*
3095 * Check for known types...
3096 */
3097
88f9aafc 3098 if (!type || _cups_strcasecmp(type->super, "application"))
e1d6a774 3099 {
ffe32673 3100 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 0.", filename, filestats, type ? type->super : "unknown", type ? type->type : "unknown");
e1d6a774 3101 return (0);
3102 }
3103
88f9aafc 3104 if (!_cups_strcasecmp(type->type, "x-httpd-cgi") &&
e1d6a774 3105 (filestats->st_mode & 0111))
3106 {
3107 /*
3108 * "application/x-httpd-cgi" is a CGI script.
3109 */
3110
3111 cupsdSetString(&con->command, filename);
3112
a0f6818e
MS		 3113 if (options)
3114 cupsdSetStringf(&con->options, " %s", options);
e1d6a774 3115
ffe32673 3116 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 1.", filename, filestats, type->super, type->type);
e1d6a774 3117 return (1);
3118 }
e1d6a774 3119
ffe32673 3120 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 0.", filename, filestats, type->super, type->type);
e1d6a774 3121 return (0);
3122}
3123
3124
ef416fc2 3125/*
3126 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3127 */
3128
3129static int /* O - 0 if relative, 1 if absolute */
3130is_path_absolute(const char *path) /* I - Input path */
3131{
3132 /*
3133 * Check for a leading slash...
3134 */
3135
3136 if (path[0] != '/')
3137 return (0);
3138
12163006
MS		 3139 /*
3140 * Check for "<" or quotes in the path and reject since this is probably
3141 * someone trying to inject HTML...
3142 */
3143
3144 if (strchr(path, '<') != NULL || strchr(path, '\"') != NULL || strchr(path, '\'') != NULL)
3145 return (0);
3146
ef416fc2 3147 /*
3148 * Check for "/.." in the path...
3149 */
3150
3151 while ((path = strstr(path, "/..")) != NULL)
3152 {
3153 if (!path[3] || path[3] == '/')
3154 return (0);
3155
3156 path ++;
3157 }
3158
3159 /*
3160 * If we haven't found any relative paths, return 1 indicating an
3161 * absolute path...
3162 */
3163
3164 return (1);
3165}
3166
3167
3168/*
3169 * 'pipe_command()' - Pipe the output of a command to the remote client.
3170 */
3171
3172static int /* O - Process ID */
3173pipe_command(cupsd_client_t *con, /* I - Client connection */
3174 int infile, /* I - Standard input for command */
3175 int *outfile, /* O - Standard output for command */
3176 char *command, /* I - Command to run */
3177 char *options, /* I - Options for command */
3178 int root) /* I - Run as root? */
3179{
3180 int i; /* Looping var */
3181 int pid; /* Process ID */
b423cd4c 3182 char *commptr, /* Command string pointer */
3183 commch; /* Command string character */
ef416fc2 3184 char *uriptr; /* URI string pointer */
3185 int fds[2]; /* Pipe FDs */
3186 int argc; /* Number of arguments */
3187 int envc; /* Number of environment variables */
3188 char argbuf[10240], /* Argument buffer */
3189 *argv[100], /* Argument strings */
b94498cf 3190 *envp[MAX_ENV + 20]; /* Environment variables */
c7017ecc 3191 char auth_type[256], /* AUTH_TYPE environment variable */
b94498cf 3192 content_length[1024], /* CONTENT_LENGTH environment variable */
ef416fc2 3193 content_type[1024], /* CONTENT_TYPE environment variable */
3194 http_cookie[32768], /* HTTP_COOKIE environment variable */
f7deaa1a 3195 http_referer[1024], /* HTTP_REFERER environment variable */
ef416fc2 3196 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3197 lang[1024], /* LANG environment variable */
b423cd4c 3198 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 3199 remote_addr[1024], /* REMOTE_ADDR environment variable */
3200 remote_host[1024], /* REMOTE_HOST environment variable */
3201 remote_user[1024], /* REMOTE_USER environment variable */
b94498cf 3202 script_filename[1024], /* SCRIPT_FILENAME environment variable */
ef416fc2 3203 script_name[1024], /* SCRIPT_NAME environment variable */
3204 server_name[1024], /* SERVER_NAME environment variable */
3205 server_port[1024]; /* SERVER_PORT environment variable */
7dfedb92 3206 ipp_attribute_t *attr; /* attributes-natural-language attribute */
ef416fc2 3207
3208
3209 /*
3210 * Parse a copy of the options string, which is of the form:
3211 *
b423cd4c 3212 * argument+argument+argument
3213 * ?argument+argument+argument
3214 * param=value&param=value
3215 * ?param=value&param=value
3216 * /name?argument+argument+argument
3217 * /name?param=value&param=value
ef416fc2 3218 *
3219 * If the string contains an "=" character after the initial name,
3220 * then we treat it as a HTTP GET form request and make a copy of
3221 * the remaining string for the environment variable.
3222 *
3223 * The string is always parsed out as command-line arguments, to
3224 * be consistent with Apache...
3225 */
3226
ffe32673 3227 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "pipe_command: infile=%d, outfile=%p, command=\"%s\", options=\"%s\", root=%d", infile, outfile, command, options ? options : "(null)", root);
ef416fc2 3228
b86bc4cf 3229 argv[0] = command;
ef416fc2 3230
b423cd4c 3231 if (options)
13713f49 3232 strlcpy(argbuf, options, sizeof(argbuf));
b423cd4c 3233 else
3234 argbuf[0] = '\0';
3235
3236 if (argbuf[0] == '/')
ef416fc2 3237 {
3238 /*
b423cd4c 3239 * Found some trailing path information, set PATH_INFO...
ef416fc2 3240 */
3241
b423cd4c 3242 if ((commptr = strchr(argbuf, '?')) == NULL)
3243 commptr = argbuf + strlen(argbuf);
ef416fc2 3244
b423cd4c 3245 commch = *commptr;
3246 *commptr = '\0';
3247 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
3248 *commptr = commch;
3249 }
3250 else
3251 {
3252 commptr = argbuf;
3253 path_info[0] = '\0';
b94498cf 3254
3255 if (*commptr == ' ')
3256 commptr ++;
b423cd4c 3257 }
ef416fc2 3258
cb7f98ee 3259 if (*commptr == '?' && con->operation == HTTP_STATE_GET && !con->query_string)
b423cd4c 3260 {
3261 commptr ++;
b86bc4cf 3262 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr);
b423cd4c 3263 }
ef416fc2 3264
b423cd4c 3265 argc = 1;
ef416fc2 3266
b423cd4c 3267 if (*commptr)
3268 {
3269 argv[argc ++] = commptr;
ef416fc2 3270
b423cd4c 3271 for (; *commptr && argc < 99; commptr ++)
3272 {
ef416fc2 3273 /*
b423cd4c 3274 * Break arguments whenever we see a + or space...
ef416fc2 3275 */
3276
b423cd4c 3277 if (*commptr == ' ' || *commptr == '+')
3278 {
3279 while (*commptr == ' ' || *commptr == '+')
3280 *commptr++ = '\0';
ef416fc2 3281
b423cd4c 3282 /*
3283 * If we don't have a blank string, save it as another argument...
3284 */
ef416fc2 3285
b423cd4c 3286 if (*commptr)
3287 {
3288 argv[argc] = commptr;
3289 argc ++;
3290 }
3291 else
3292 break;
3293 }
3294 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
3295 isxdigit(commptr[2] & 255))
3296 {
3297 /*
3298 * Convert the %xx notation to the individual character.
3299 */
ef416fc2 3300
b423cd4c 3301 if (commptr[1] >= '0' && commptr[1] <= '9')
7e86f2f6 3302 *commptr = (char)((commptr[1] - '0') << 4);
b423cd4c 3303 else
7e86f2f6 3304 *commptr = (char)((tolower(commptr[1]) - 'a' + 10) << 4);
ef416fc2 3305
b423cd4c 3306 if (commptr[2] >= '0' && commptr[2] <= '9')
3307 *commptr |= commptr[2] - '0';
3308 else
3309 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 3310
b423cd4c 3311 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 3312
b423cd4c 3313 /*
3314 * Check for a %00 and break if that is the case...
3315 */
ef416fc2 3316
b423cd4c 3317 if (!*commptr)
3318 break;
3319 }
ef416fc2 3320 }
3321 }
3322
3323 argv[argc] = NULL;
3324
ef416fc2 3325 /*
3326 * Setup the environment variables as needed...
3327 */
3328
b94498cf 3329 if (con->username[0])
3330 {
c7017ecc 3331 snprintf(auth_type, sizeof(auth_type), "AUTH_TYPE=%s",
996acce8 3332 httpGetField(con->http, HTTP_FIELD_AUTHORIZATION));
b94498cf 3333
3334 if ((uriptr = strchr(auth_type + 10, ' ')) != NULL)
3335 *uriptr = '\0';
3336 }
3337 else
3338 auth_type[0] = '\0';
3339
2793a478 3340 if (con->request && (attr = ippFindAttribute(con->request, "attributes-natural-language", IPP_TAG_LANGUAGE)) != NULL)
7dfedb92 3341 {
2793a478 3342 cups_lang_t *language = cupsLangGet(ippGetString(attr, 0, NULL));
7dfedb92 3343
2793a478
MS		 3344 snprintf(lang, sizeof(lang), "LANG=%s.UTF8", language->language);
3345 cupsLangFree(language);
7dfedb92
MS		 3346 }
3347 else if (con->language)
3348 snprintf(lang, sizeof(lang), "LANG=%s.UTF8", con->language->language);
ef416fc2 3349 else
5a9febac 3350 strlcpy(lang, "LANG=C", sizeof(lang));
ef416fc2 3351
5a9febac 3352 strlcpy(remote_addr, "REMOTE_ADDR=", sizeof(remote_addr));
5ec1fd3d 3353 httpAddrString(httpGetAddress(con->http), remote_addr + 12,
ef416fc2 3354 sizeof(remote_addr) - 12);
3355
3356 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
5ec1fd3d 3357 httpGetHostname(con->http, NULL, 0));
ef416fc2 3358
3359 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
3360 if ((uriptr = strchr(script_name, '?')) != NULL)
3361 *uriptr = '\0';
3362
b94498cf 3363 snprintf(script_filename, sizeof(script_filename), "SCRIPT_FILENAME=%s%s",
3364 DocumentRoot, script_name + 12);
3365
5629a813 3366 snprintf(server_port, sizeof(server_port), "SERVER_PORT=%d", con->serverport);
ef416fc2 3367
5ec1fd3d 3368 if (httpGetField(con->http, HTTP_FIELD_HOST)[0])
0268488e
MS		 3369 {
3370 char *nameptr; /* Pointer to ":port" */
3371
3372 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
5ec1fd3d 3373 httpGetField(con->http, HTTP_FIELD_HOST));
0268488e
MS		 3374 if ((nameptr = strrchr(server_name, ':')) != NULL && !strchr(nameptr, ']'))
3375 *nameptr = '\0'; /* Strip trailing ":port" */
3376 }
3377 else
3378 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3379 con->servername);
ef416fc2 3380
3381 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
3382
b94498cf 3383 if (auth_type[0])
3384 envp[envc ++] = auth_type;
3385
ef416fc2 3386 envp[envc ++] = lang;
3387 envp[envc ++] = "REDIRECT_STATUS=1";
b94498cf 3388 envp[envc ++] = "GATEWAY_INTERFACE=CGI/1.1";
ef416fc2 3389 envp[envc ++] = server_name;
3390 envp[envc ++] = server_port;
3391 envp[envc ++] = remote_addr;
3392 envp[envc ++] = remote_host;
3393 envp[envc ++] = script_name;
b94498cf 3394 envp[envc ++] = script_filename;
ef416fc2 3395
b423cd4c 3396 if (path_info[0])
3397 envp[envc ++] = path_info;
3398
ef416fc2 3399 if (con->username[0])
3400 {
3401 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
3402
3403 envp[envc ++] = remote_user;
3404 }
3405
d21dc0ed 3406 if (httpGetVersion(con->http) == HTTP_VERSION_1_1)
ef416fc2 3407 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
d21dc0ed 3408 else if (httpGetVersion(con->http) == HTTP_VERSION_1_0)
ef416fc2 3409 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
3410 else
3411 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
3412
d21dc0ed 3413 if (httpGetCookie(con->http))
ef416fc2 3414 {
3415 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
d21dc0ed 3416 httpGetCookie(con->http));
ef416fc2 3417 envp[envc ++] = http_cookie;
3418 }
3419
5ec1fd3d 3420 if (httpGetField(con->http, HTTP_FIELD_USER_AGENT)[0])
ef416fc2 3421 {
3422 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
5ec1fd3d 3423 httpGetField(con->http, HTTP_FIELD_USER_AGENT));
ef416fc2 3424 envp[envc ++] = http_user_agent;
3425 }
3426
5ec1fd3d 3427 if (httpGetField(con->http, HTTP_FIELD_REFERER)[0])
f7deaa1a 3428 {
3429 snprintf(http_referer, sizeof(http_referer), "HTTP_REFERER=%s",
5ec1fd3d 3430 httpGetField(con->http, HTTP_FIELD_REFERER));
f7deaa1a 3431 envp[envc ++] = http_referer;
3432 }
3433
cb7f98ee 3434 if (con->operation == HTTP_STATE_GET)
ef416fc2 3435 {
ef416fc2 3436 envp[envc ++] = "REQUEST_METHOD=GET";
3437
b86bc4cf 3438 if (con->query_string)
ef416fc2 3439 {
3440 /*
3441 * Add GET form variables after ?...
3442 */
3443
b86bc4cf 3444 envp[envc ++] = con->query_string;
ef416fc2 3445 }
3dfe78b3
MS		 3446 else
3447 envp[envc ++] = "QUERY_STRING=";
ef416fc2 3448 }
3449 else
3450 {
e1d6a774 3451 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
3452 CUPS_LLCAST con->bytes);
ef416fc2 3453 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
5ec1fd3d 3454 httpGetField(con->http, HTTP_FIELD_CONTENT_TYPE));
ef416fc2 3455
3456 envp[envc ++] = "REQUEST_METHOD=POST";
3457 envp[envc ++] = content_length;
3458 envp[envc ++] = content_type;
3459 }
3460
3461 /*
3462 * Tell the CGI if we are using encryption...
3463 */
3464
d21dc0ed 3465 if (httpIsEncrypted(con->http))
ef416fc2 3466 envp[envc ++] = "HTTPS=ON";
3467
3468 /*
3469 * Terminate the environment array...
3470 */
3471
3472 envp[envc] = NULL;
3473
38e73f87 3474 if (LogLevel >= CUPSD_LOG_DEBUG)
ef416fc2 3475 {
3476 for (i = 0; i < argc; i ++)
38e73f87
MS		 3477 cupsdLogMessage(CUPSD_LOG_DEBUG,
3478 "[CGI] argv[%d] = \"%s\"", i, argv[i]);
ef416fc2 3479 for (i = 0; i < envc; i ++)
38e73f87
MS		 3480 cupsdLogMessage(CUPSD_LOG_DEBUG,
3481 "[CGI] envp[%d] = \"%s\"", i, envp[i]);
ef416fc2 3482 }
3483
3484 /*
3485 * Create a pipe for the output...
3486 */
3487
3488 if (cupsdOpenPipe(fds))
3489 {
38e73f87 3490 cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to create pipe for %s - %s",
ef416fc2 3491 argv[0], strerror(errno));
3492 return (0);
3493 }
3494
3495 /*
3496 * Then execute the command...
3497 */
3498
3499 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
38e73f87 3500 -1, -1, root, DefaultProfile, NULL, &pid) < 0)
ef416fc2 3501 {
3502 /*
3503 * Error - can't fork!
3504 */
3505
38e73f87 3506 cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to start %s - %s", argv[0],
ef416fc2 3507 strerror(errno));
3508
3509 cupsdClosePipe(fds);
3510 pid = 0;
3511 }
3512 else
3513 {
3514 /*
3515 * Fork successful - return the PID...
3516 */
3517
3518 if (con->username[0])
0fa6c7fa 3519 cupsdAddCert(pid, con->username, con->type);
ef416fc2 3520
38e73f87 3521 cupsdLogMessage(CUPSD_LOG_DEBUG, "[CGI] Started %s (PID %d)", command, pid);
ef416fc2 3522
3523 *outfile = fds[0];
3524 close(fds[1]);
3525 }
3526
ef416fc2 3527 return (pid);
3528}
3529
3530
e07d4801
MS		 3531/*
3532 * 'valid_host()' - Is the Host: field valid?
3533 */
3534
3535static int /* O - 1 if valid, 0 if not */
3536valid_host(cupsd_client_t *con) /* I - Client connection */
3537{
3538 cupsd_alias_t *a; /* Current alias */
3539 cupsd_netif_t *netif; /* Current network interface */
f2534050
MS		 3540 const char *end; /* End character */
3541 char *ptr; /* Pointer into host value */
e07d4801
MS		 3542
3543
f2534050
MS		 3544 /*
3545 * Copy the Host: header for later use...
3546 */
3547
5ec1fd3d 3548 strlcpy(con->clientname, httpGetField(con->http, HTTP_FIELD_HOST),
f2534050
MS		 3549 sizeof(con->clientname));
3550 if ((ptr = strrchr(con->clientname, ':')) != NULL && !strchr(ptr, ']'))
3551 {
3552 *ptr++ = '\0';
3553 con->clientport = atoi(ptr);
3554 }
3555 else
3556 con->clientport = con->serverport;
3557
3558 /*
3559 * Then validate...
3560 */
e07d4801 3561
5ec1fd3d 3562 if (httpAddrLocalhost(httpGetAddress(con->http)))
e07d4801
MS		 3563 {
3564 /*
3565 * Only allow "localhost" or the equivalent IPv4 or IPv6 numerical
3566 * addresses when accessing CUPS via the loopback interface...
3567 */
3568
f2534050
MS		 3569 return (!_cups_strcasecmp(con->clientname, "localhost") ||
3570 !_cups_strcasecmp(con->clientname, "localhost.") ||
f2534050
MS		 3571 !strcmp(con->clientname, "127.0.0.1") ||
3572 !strcmp(con->clientname, "[::1]"));
e07d4801
MS		 3573 }
3574
37e7e6e0 3575#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
e07d4801
MS		 3576 /*
3577 * Check if the hostname is something.local (Bonjour); if so, allow it.
3578 */
3579
f2534050
MS		 3580 if ((end = strrchr(con->clientname, '.')) != NULL && end > con->clientname &&
3581 !end[1])
a29fd7dd
MS		 3582 {
3583 /*
3584 * "." on end, work back to second-to-last "."...
3585 */
f2534050
MS		 3586
3587 for (end --; end > con->clientname && *end != '.'; end --);
a29fd7dd
MS		 3588 }
3589
3590 if (end && (!_cups_strcasecmp(end, ".local") ||
f2534050 3591 !_cups_strcasecmp(end, ".local.")))
e07d4801 3592 return (1);
37e7e6e0 3593#endif /* HAVE_DNSSD || HAVE_AVAHI */
e07d4801
MS		 3594
3595 /*
3596 * Check if the hostname is an IP address...
3597 */
3598
f2534050 3599 if (isdigit(con->clientname[0] & 255) || con->clientname[0] == '[')
e07d4801
MS		 3600 {
3601 /*
3602 * Possible IPv4/IPv6 address...
3603 */
3604
e07d4801
MS		 3605 http_addrlist_t *addrlist; /* List of addresses */
3606
3607
f2534050 3608 if ((addrlist = httpAddrGetList(con->clientname, AF_UNSPEC, NULL)) != NULL)
e07d4801
MS		 3609 {
3610 /*
3611 * Good IPv4/IPv6 address...
3612 */
3613
3614 httpAddrFreeList(addrlist);
3615 return (1);
3616 }
3617 }
3618
3619 /*
3620 * Check for (alias) name matches...
3621 */
3622
3623 for (a = (cupsd_alias_t *)cupsArrayFirst(ServerAlias);
3624 a;
3625 a = (cupsd_alias_t *)cupsArrayNext(ServerAlias))
3626 {
3627 /*
3628 * "ServerAlias *" allows all host values through...
3629 */
3630
3631 if (!strcmp(a->name, "*"))
3632 return (1);
3633
f2534050 3634 if (!_cups_strncasecmp(con->clientname, a->name, a->namelen))
e07d4801
MS		 3635 {
3636 /*
f2534050 3637 * Prefix matches; check the character at the end - it must be "." or nul.
e07d4801
MS		 3638 */
3639
f2534050 3640 end = con->clientname + a->namelen;
e07d4801 3641
f2534050 3642 if (!*end || (*end == '.' && !end[1]))
e07d4801
MS		 3643 return (1);
3644 }
3645 }
3646
37e7e6e0 3647#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
e07d4801
MS		 3648 for (a = (cupsd_alias_t *)cupsArrayFirst(DNSSDAlias);
3649 a;
3650 a = (cupsd_alias_t *)cupsArrayNext(DNSSDAlias))
3651 {
3652 /*
3653 * "ServerAlias *" allows all host values through...
3654 */
3655
3656 if (!strcmp(a->name, "*"))
3657 return (1);
3658
f2534050 3659 if (!_cups_strncasecmp(con->clientname, a->name, a->namelen))
e07d4801
MS		 3660 {
3661 /*
f2534050 3662 * Prefix matches; check the character at the end - it must be "." or nul.
e07d4801
MS		 3663 */
3664
f2534050 3665 end = con->clientname + a->namelen;
e07d4801 3666
f2534050 3667 if (!*end || (*end == '.' && !end[1]))
e07d4801
MS		 3668 return (1);
3669 }
3670 }
37e7e6e0 3671#endif /* HAVE_DNSSD || HAVE_AVAHI */
e07d4801
MS		 3672
3673 /*
3674 * Check for interface hostname matches...
3675 */
3676
3677 for (netif = (cupsd_netif_t *)cupsArrayFirst(NetIFList);
3678 netif;
3679 netif = (cupsd_netif_t *)cupsArrayNext(NetIFList))
3680 {
f2534050 3681 if (!_cups_strncasecmp(con->clientname, netif->hostname, netif->hostlen))
e07d4801
MS		 3682 {
3683 /*
f2534050 3684 * Prefix matches; check the character at the end - it must be "." or nul.
e07d4801
MS		 3685 */
3686
f2534050 3687 end = con->clientname + netif->hostlen;
e07d4801 3688
f2534050 3689 if (!*end || (*end == '.' && !end[1]))
e07d4801
MS		 3690 return (1);
3691 }
3692 }
3693
3694 return (0);
3695}
3696
3697
ef416fc2 3698/*
a74454a7 3699 * 'write_file()' - Send a file via HTTP.
e1d6a774 3700 */
3701
3702static int /* O - 0 on failure, 1 on success */
a74454a7 3703write_file(cupsd_client_t *con, /* I - Client connection */
3704 http_status_t code, /* I - HTTP status */
3705 char *filename, /* I - Filename */
3706 char *type, /* I - File type */
3707 struct stat *filestats) /* O - File information */
e1d6a774 3708{
3709 con->file = open(filename, O_RDONLY);
3710
ffe32673 3711 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "write_file: code=%d, filename=\"%s\" (%d), type=\"%s\", filestats=%p.", code, filename, con->file, type ? type : "(null)", filestats);
e1d6a774 3712
3713 if (con->file < 0)
3714 return (0);
3715
3716 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
3717
dfc45c1b
MS		 3718 con->pipe_pid = 0;
3719 con->sent_header = 1;
e1d6a774 3720
a73ca01e
MS		 3721 httpClearFields(con->http);
3722
7e86f2f6 3723 httpSetLength(con->http, (size_t)filestats->st_size);
e1d6a774 3724
e200616a
MS		 3725 httpSetField(con->http, HTTP_FIELD_LAST_MODIFIED,
3726 httpGetDateString(filestats->st_mtime));
e1d6a774 3727
e200616a 3728 if (!cupsdSendHeader(con, code, type, CUPSD_AUTH_NONE))
07725fee 3729 return (0);
d09495fa 3730
43dcaf3b 3731 cupsdAddSelect(httpGetFd(con->http), NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
e1d6a774 3732
996acce8 3733 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Sending file.");
1bc82dd9 3734
e1d6a774 3735 return (1);
3736}
3737
3738
3739/*
f899b121 3740 * 'write_pipe()' - Flag that data is available on the CGI pipe.
3741 */
3742
3743static void
3744write_pipe(cupsd_client_t *con) /* I - Client connection */
3745{
ffe32673 3746 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "write_pipe: CGI output on fd %d.", con->file);
f899b121 3747
3748 con->file_ready = 1;
3749
3750 cupsdRemoveSelect(con->file);
996acce8 3751 cupsdAddSelect(httpGetFd(con->http), NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
1bc82dd9 3752
996acce8 3753 cupsdLogClient(con, CUPSD_LOG_DEBUG, "CGI data ready to be sent.");
f899b121 3754}
Unnamed repository; edit this file 'description' to name the repository.