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Generate strings files for localizing PPD options (Issue #5194)
[thirdparty/cups.git] / scheduler / client.c
CommitLineData
ef416fc2 1/*
5ec1fd3d 2 * Client routines for the CUPS scheduler.
ef416fc2 3 *
884b7ed1 4 * Copyright 2007-2017 by Apple Inc.
5ec1fd3d 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 *
e3101897 10 * Licensed under Apache License v2.0. See the file "LICENSE" for more information.
ef416fc2 11 */
12
13/*
14 * Include necessary headers...
15 */
16
5ec1fd3d 17#define _CUPS_NO_DEPRECATED
d21dc0ed 18#define _HTTP_NO_PRIVATE
ef416fc2 19#include "cupsd.h"
20
cb7f98ee
MS		 21#ifdef __APPLE__
22# include <libproc.h>
23#endif /* __APPLE__ */
749b1e90
MS		 24#ifdef HAVE_TCPD_H
25# include <tcpd.h>
26#endif /* HAVE_TCPD_H */
27
ef416fc2 28
29/*
30 * Local functions...
31 */
32
33static int check_if_modified(cupsd_client_t *con,
34 struct stat *filestats);
3dfe78b3
MS		 35static int compare_clients(cupsd_client_t *a, cupsd_client_t *b,
36 void *data);
d3d89474
MS		 37#ifdef HAVE_SSL
38static int cupsd_start_tls(cupsd_client_t *con, http_encryption_t e);
39#endif /* HAVE_SSL */
f7deaa1a 40static char *get_file(cupsd_client_t *con, struct stat *filestats,
07623986 41 char *filename, size_t len);
c41769ff 42static http_status_t install_cupsd_conf(cupsd_client_t *con);
e1d6a774 43static int is_cgi(cupsd_client_t *con, const char *filename,
44 struct stat *filestats, mime_type_t *type);
ef416fc2 45static int is_path_absolute(const char *path);
46static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
47 char *command, char *options, int root);
e07d4801 48static int valid_host(cupsd_client_t *con);
a74454a7 49static int write_file(cupsd_client_t *con, http_status_t code,
50 char *filename, char *type,
51 struct stat *filestats);
f899b121 52static void write_pipe(cupsd_client_t *con);
ef416fc2 53
54
55/*
56 * 'cupsdAcceptClient()' - Accept a new client.
57 */
58
59void
60cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
61{
48bd1142 62 const char *hostname; /* Hostname of client */
996acce8 63 char name[256]; /* Hostname of client */
ef416fc2 64 int count; /* Count of connections on a host */
bd7854cb 65 cupsd_client_t *con, /* New client pointer */
66 *tempcon; /* Temporary client pointer */
ef416fc2 67 socklen_t addrlen; /* Length of address */
ef416fc2 68 http_addr_t temp; /* Temporary address variable */
69 static time_t last_dos = 0; /* Time of last DoS attack */
749b1e90
MS		 70#ifdef HAVE_TCPD_H
71 struct request_info wrap_req; /* TCP wrappers request information */
72#endif /* HAVE_TCPD_H */
ef416fc2 73
74
ffe32673 75 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAcceptClient(lis=%p(%d)) Clients=%d", lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 76
77 /*
78 * Make sure we don't have a full set of clients already...
79 */
80
bd7854cb 81 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 82 return;
83
e4e37194
MS		 84 cupsdSetBusyState(1);
85
ef416fc2 86 /*
87 * Get a pointer to the next available client...
88 */
89
bd7854cb 90 if (!Clients)
91 Clients = cupsArrayNew(NULL, NULL);
92
93 if (!Clients)
91c84a35
MS		 94 {
95 cupsdLogMessage(CUPSD_LOG_ERROR,
3dfe78b3
MS		 96 "Unable to allocate memory for clients array!");
97 cupsdPauseListening();
98 return;
99 }
100
101 if (!ActiveClients)
102 ActiveClients = cupsArrayNew((cups_array_func_t)compare_clients, NULL);
103
104 if (!ActiveClients)
105 {
106 cupsdLogMessage(CUPSD_LOG_ERROR,
107 "Unable to allocate memory for active clients array!");
91c84a35 108 cupsdPauseListening();
bd7854cb 109 return;
91c84a35 110 }
bd7854cb 111
91c84a35
MS		 112 if ((con = calloc(1, sizeof(cupsd_client_t))) == NULL)
113 {
114 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to allocate memory for client!");
115 cupsdPauseListening();
116 return;
117 }
ef416fc2 118
ef416fc2 119 /*
120 * Accept the client and get the remote address...
121 */
122
996acce8
MS		 123 con->number = ++ LastClientNumber;
124 con->file = -1;
ef416fc2 125
996acce8 126 if ((con->http = httpAcceptConnection(lis->fd, 0)) == NULL)
ef416fc2 127 {
76cd9e37
MS		 128 if (errno == ENFILE || errno == EMFILE)
129 cupsdPauseListening();
130
ef416fc2 131 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
132 strerror(errno));
bd7854cb 133 free(con);
76cd9e37 134
ef416fc2 135 return;
136 }
137
22c9029b 138 /*
996acce8 139 * Save the connected address and port number...
22c9029b 140 */
ef416fc2 141
cd1a83ea
MS		 142 addrlen = sizeof(con->clientaddr);
143
144 if (getsockname(httpGetFd(con->http), (struct sockaddr *)&con->clientaddr, &addrlen) || addrlen == 0)
145 con->clientaddr = lis->address;
146
147 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Server address is \"%s\".", httpAddrString(&con->clientaddr, name, sizeof(name)));
ef416fc2 148
ef416fc2 149 /*
150 * Check the number of clients on the same address...
151 */
152
bd7854cb 153 for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
154 tempcon;
155 tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
996acce8 156 if (httpAddrEqual(httpGetAddress(tempcon->http), httpGetAddress(con->http)))
ef416fc2 157 {
158 count ++;
159 if (count >= MaxClientsPerHost)
160 break;
161 }
162
163 if (count >= MaxClientsPerHost)
164 {
165 if ((time(NULL) - last_dos) >= 60)
166 {
167 last_dos = time(NULL);
168 cupsdLogMessage(CUPSD_LOG_WARN,
bd7854cb 169 "Possible DoS attack - more than %d clients connecting "
996acce8 170 "from %s.",
749b1e90 171 MaxClientsPerHost,
996acce8 172 httpGetHostname(con->http, name, sizeof(name)));
ef416fc2 173 }
174
996acce8 175 httpClose(con->http);
bd7854cb 176 free(con);
ef416fc2 177 return;
178 }
179
180 /*
181 * Get the hostname or format the IP address as needed...
182 */
183
48bd1142
MS		 184 if (HostNameLookups)
185 hostname = httpResolveHostname(con->http, NULL, 0);
ef416fc2 186 else
48bd1142 187 hostname = httpGetHostname(con->http, NULL, 0);
ef416fc2 188
189 if (hostname == NULL && HostNameLookups == 2)
190 {
191 /*
192 * Can't have an unresolved IP address with double-lookups enabled...
193 */
194
996acce8 195 httpClose(con->http);
ef416fc2 196
996acce8 197 cupsdLogClient(con, CUPSD_LOG_WARN,
ef416fc2 198 "Name lookup failed - connection from %s closed!",
5ec1fd3d 199 httpGetHostname(con->http, NULL, 0));
bd7854cb 200
201 free(con);
ef416fc2 202 return;
203 }
204
205 if (HostNameLookups == 2)
206 {
207 /*
208 * Do double lookups as needed...
209 */
210
48bd1142
MS		 211 http_addrlist_t *addrlist, /* List of addresses */
212 *addr; /* Current address */
213
214 if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, NULL)) != NULL)
ef416fc2 215 {
216 /*
217 * See if the hostname maps to the same IP address...
218 */
219
220 for (addr = addrlist; addr; addr = addr->next)
5ec1fd3d 221 if (httpAddrEqual(httpGetAddress(con->http), &(addr->addr)))
ef416fc2 222 break;
223 }
224 else
225 addr = NULL;
226
227 httpAddrFreeList(addrlist);
228
229 if (!addr)
230 {
231 /*
232 * Can't have a hostname that doesn't resolve to the same IP address
233 * with double-lookups enabled...
234 */
235
996acce8 236 httpClose(con->http);
ef416fc2 237
996acce8 238 cupsdLogClient(con, CUPSD_LOG_WARN,
ef416fc2 239 "IP lookup failed - connection from %s closed!",
5ec1fd3d 240 httpGetHostname(con->http, NULL, 0));
bd7854cb 241 free(con);
ef416fc2 242 return;
243 }
244 }
245
749b1e90
MS		 246#ifdef HAVE_TCPD_H
247 /*
248 * See if the connection is denied by TCP wrappers...
249 */
250
996acce8
MS		 251 request_init(&wrap_req, RQ_DAEMON, "cupsd", RQ_FILE, httpGetFd(con->http),
252 NULL);
749b1e90
MS		 253 fromhost(&wrap_req);
254
255 if (!hosts_access(&wrap_req))
256 {
996acce8 257 httpClose(con->http);
749b1e90 258
996acce8 259 cupsdLogClient(con, CUPSD_LOG_WARN,
749b1e90 260 "Connection from %s refused by /etc/hosts.allow and "
5ec1fd3d 261 "/etc/hosts.deny rules.", httpGetHostname(con->http, NULL, 0));
749b1e90
MS		 262 free(con);
263 return;
264 }
265#endif /* HAVE_TCPD_H */
266
ef416fc2 267#ifdef AF_LOCAL
5ec1fd3d 268 if (httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL)
cb7f98ee
MS		 269 {
270# ifdef __APPLE__
271 socklen_t peersize; /* Size of peer credentials */
272 pid_t peerpid; /* Peer process ID */
996acce8 273 char peername[256]; /* Name of process */
cb7f98ee
MS		 274
275 peersize = sizeof(peerpid);
3e4dcdb9 276 if (!getsockopt(httpGetFd(con->http), SOL_LOCAL, LOCAL_PEERPID, &peerpid,
996acce8 277 &peersize))
cb7f98ee 278 {
3e4dcdb9 279 if (!proc_name((int)peerpid, peername, sizeof(peername)))
996acce8
MS		 280 cupsdLogClient(con, CUPSD_LOG_DEBUG,
281 "Accepted from %s (Domain ???[%d])",
5ec1fd3d 282 httpGetHostname(con->http, NULL, 0), (int)peerpid);
cb7f98ee 283 else
996acce8
MS		 284 cupsdLogClient(con, CUPSD_LOG_DEBUG,
285 "Accepted from %s (Domain %s[%d])",
3e4dcdb9 286 httpGetHostname(con->http, NULL, 0), peername, (int)peerpid);
cb7f98ee
MS		 287 }
288 else
289# endif /* __APPLE__ */
290
996acce8 291 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Accepted from %s (Domain)",
5ec1fd3d 292 httpGetHostname(con->http, NULL, 0));
cb7f98ee 293 }
ef416fc2 294 else
295#endif /* AF_LOCAL */
996acce8 296 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Accepted from %s:%d (IPv%d)",
5ec1fd3d
MS		 297 httpGetHostname(con->http, NULL, 0),
298 httpAddrPort(httpGetAddress(con->http)),
299 httpAddrFamily(httpGetAddress(con->http)) == AF_INET ? 4 : 6);
ef416fc2 300
301 /*
302 * Get the local address the client connected to...
303 */
304
305 addrlen = sizeof(temp);
996acce8 306 if (getsockname(httpGetFd(con->http), (struct sockaddr *)&temp, &addrlen))
ef416fc2 307 {
996acce8
MS		 308 cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to get local address - %s",
309 strerror(errno));
ef416fc2 310
5a9febac 311 strlcpy(con->servername, "localhost", sizeof(con->servername));
ef416fc2 312 con->serverport = LocalPort;
313 }
22c9029b 314#ifdef AF_LOCAL
5ec1fd3d 315 else if (httpAddrFamily(&temp) == AF_LOCAL)
22c9029b 316 {
5a9febac 317 strlcpy(con->servername, "localhost", sizeof(con->servername));
22c9029b
MS		 318 con->serverport = LocalPort;
319 }
320#endif /* AF_LOCAL */
ef416fc2 321 else
322 {
22c9029b
MS		 323 if (httpAddrLocalhost(&temp))
324 strlcpy(con->servername, "localhost", sizeof(con->servername));
6961465f 325 else if (HostNameLookups)
22c9029b 326 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
ef416fc2 327 else
22c9029b 328 httpAddrString(&temp, con->servername, sizeof(con->servername));
b19ccc9e 329
a469f8a5 330 con->serverport = httpAddrPort(&(lis->address));
ef416fc2 331 }
332
dcb445bc
MS		 333 /*
334 * Add the connection to the array of active clients...
335 */
336
bd7854cb 337 cupsArrayAdd(Clients, con);
338
ef416fc2 339 /*
b9faaae1 340 * Add the socket to the server select.
ef416fc2 341 */
342
996acce8
MS		 343 cupsdAddSelect(httpGetFd(con->http), (cupsd_selfunc_t)cupsdReadClient, NULL,
344 con);
ef416fc2 345
996acce8 346 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for request.");
1bc82dd9 347
ef416fc2 348 /*
349 * Temporarily suspend accept()'s until we lose a client...
350 */
351
bd7854cb 352 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 353 cupsdPauseListening();
354
355#ifdef HAVE_SSL
356 /*
357 * See if we are connecting on a secure port...
358 */
359
5ec1fd3d 360 if (lis->encryption == HTTP_ENCRYPTION_ALWAYS)
ef416fc2 361 {
362 /*
363 * https connection; go secure...
364 */
365
d3d89474 366 if (cupsd_start_tls(con, HTTP_ENCRYPTION_ALWAYS))
411affcf 367 cupsdCloseClient(con);
ef416fc2 368 }
369 else
370 con->auto_ssl = 1;
371#endif /* HAVE_SSL */
372}
373
374
375/*
376 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
377 */
378
379void
380cupsdCloseAllClients(void)
381{
bd7854cb 382 cupsd_client_t *con; /* Current client */
383
384
ffe32673 385 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdCloseAllClients() Clients=%d", cupsArrayCount(Clients));
b9faaae1 386
bd7854cb 387 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
388 con;
389 con = (cupsd_client_t *)cupsArrayNext(Clients))
49d87452
MS		 390 if (cupsdCloseClient(con))
391 cupsdCloseClient(con);
ef416fc2 392}
393
394
395/*
396 * 'cupsdCloseClient()' - Close a remote client.
397 */
398
399int /* O - 1 if partial close, 0 if fully closed */
400cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
401{
402 int partial; /* Do partial close for SSL? */
ef416fc2 403
404
996acce8 405 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing connection.");
ef416fc2 406
407 /*
408 * Flush pending writes before closing...
409 */
410
996acce8 411 httpFlushWrite(con->http);
ef416fc2 412
413 partial = 0;
414
ef416fc2 415 if (con->pipe_pid != 0)
416 {
417 /*
418 * Stop any CGI process...
419 */
420
ef416fc2 421 cupsdEndProcess(con->pipe_pid, 1);
422 con->pipe_pid = 0;
423 }
424
425 if (con->file >= 0)
426 {
f7deaa1a 427 cupsdRemoveSelect(con->file);
ef416fc2 428
ef416fc2 429 close(con->file);
430 con->file = -1;
431 }
432
433 /*
434 * Close the socket and clear the file from the input set for select()...
435 */
436
996acce8 437 if (httpGetFd(con->http) >= 0)
ef416fc2 438 {
3dfe78b3 439 cupsArrayRemove(ActiveClients, con);
e4e37194 440 cupsdSetBusyState(0);
3dfe78b3 441
5ec1fd3d
MS		 442#ifdef HAVE_SSL
443 /*
444 * Shutdown encryption as needed...
445 */
446
447 if (httpIsEncrypted(con->http))
448 partial = 1;
449#endif /* HAVE_SSL */
450
ef416fc2 451 if (partial)
452 {
453 /*
454 * Only do a partial close so that the encrypted client gets everything.
455 */
456
5ec1fd3d 457 httpShutdown(con->http);
996acce8
MS		 458 cupsdAddSelect(httpGetFd(con->http), (cupsd_selfunc_t)cupsdReadClient,
459 NULL, con);
1bc82dd9 460
996acce8 461 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for socket close.");
ef416fc2 462 }
463 else
464 {
465 /*
466 * Shut the socket down fully...
467 */
468
996acce8
MS		 469 cupsdRemoveSelect(httpGetFd(con->http));
470 httpClose(con->http);
471 con->http = NULL;
ef416fc2 472 }
473 }
474
475 if (!partial)
476 {
477 /*
478 * Free memory...
479 */
480
5ec1fd3d
MS		 481 cupsdRemoveSelect(httpGetFd(con->http));
482
996acce8 483 httpClose(con->http);
ef416fc2 484
5e6c3df7
MS		 485 if (con->filename)
486 {
487 unlink(con->filename);
488 cupsdClearString(&con->filename);
489 }
490
ef416fc2 491 cupsdClearString(&con->command);
492 cupsdClearString(&con->options);
b86bc4cf 493 cupsdClearString(&con->query_string);
ef416fc2 494
495 if (con->request)
496 {
497 ippDelete(con->request);
498 con->request = NULL;
499 }
500
501 if (con->response)
502 {
503 ippDelete(con->response);
504 con->response = NULL;
505 }
506
507 if (con->language)
508 {
509 cupsLangFree(con->language);
510 con->language = NULL;
511 }
512
f7deaa1a 513#ifdef HAVE_AUTHORIZATION_H
514 if (con->authref)
515 {
516 AuthorizationFree(con->authref, kAuthorizationFlagDefaults);
517 con->authref = NULL;
518 }
519#endif /* HAVE_AUTHORIZATION_H */
520
ef416fc2 521 /*
522 * Re-enable new client connections if we are going back under the
523 * limit...
524 */
525
bd7854cb 526 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 527 cupsdResumeListening();
528
529 /*
530 * Compact the list of clients as necessary...
531 */
532
bd7854cb 533 cupsArrayRemove(Clients, con);
ef416fc2 534
bd7854cb 535 free(con);
ef416fc2 536 }
537
538 return (partial);
539}
540
541
ef416fc2 542/*
543 * 'cupsdReadClient()' - Read data from a client.
544 */
545
f7deaa1a 546void
ef416fc2 547cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
548{
549 char line[32768], /* Line from client... */
ef416fc2 550 locale[64], /* Locale */
551 *ptr; /* Pointer into strings */
ef416fc2 552 http_status_t status; /* Transfer status */
553 ipp_state_t ipp_state; /* State of IPP transfer */
554 int bytes; /* Number of bytes to POST */
555 char *filename; /* Name of file for GET/HEAD */
556 char buf[1024]; /* Buffer for real filename */
557 struct stat filestats; /* File information */
558 mime_type_t *type; /* MIME type of file */
ef416fc2 559 static unsigned request_id = 0; /* Request ID for temp files */
560
561
5ec1fd3d 562 status = HTTP_STATUS_CONTINUE;
ef416fc2 563
ffe32673 564 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 565
43dcaf3b
MS		 566 if (httpGetState(con->http) == HTTP_STATE_GET_SEND ||
567 httpGetState(con->http) == HTTP_STATE_POST_SEND ||
568 httpGetState(con->http) == HTTP_STATE_STATUS)
569 {
570 /*
571 * If we get called in the wrong state, then something went wrong with the
572 * connection and we need to shut it down...
573 */
574
bb00c43f
MS		 575 if (!httpGetReady(con->http) && recv(httpGetFd(con->http), buf, 1, MSG_PEEK) < 1)
576 {
577 /*
578 * Connection closed...
579 */
580
581 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on EOF.");
582 cupsdCloseClient(con);
583 return;
584 }
585
ffe32673 586 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on unexpected HTTP read state %s.", httpStateString(httpGetState(con->http)));
43dcaf3b
MS		 587 cupsdCloseClient(con);
588 return;
589 }
590
ef416fc2 591#ifdef HAVE_SSL
592 if (con->auto_ssl)
593 {
594 /*
595 * Automatically check for a SSL/TLS handshake...
596 */
597
598 con->auto_ssl = 0;
599
996acce8 600 if (recv(httpGetFd(con->http), buf, 1, MSG_PEEK) == 1 &&
ef416fc2 601 (!buf[0] || !strchr("DGHOPT", buf[0])))
602 {
603 /*
604 * Encrypt this connection...
605 */
606
ffe32673 607 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "Saw first byte %02X, auto-negotiating SSL/TLS session.", buf[0] & 255);
ef416fc2 608
d3d89474 609 if (cupsd_start_tls(con, HTTP_ENCRYPTION_ALWAYS))
f7deaa1a 610 cupsdCloseClient(con);
411affcf 611
f7deaa1a 612 return;
ef416fc2 613 }
614 }
615#endif /* HAVE_SSL */
616
5ec1fd3d 617 switch (httpGetState(con->http))
ef416fc2 618 {
cb7f98ee 619 case HTTP_STATE_WAITING :
ef416fc2 620 /*
621 * See if we've received a request line...
622 */
623
d21dc0ed
MS		 624 con->operation = httpReadRequest(con->http, con->uri, sizeof(con->uri));
625 if (con->operation == HTTP_STATE_ERROR ||
626 con->operation == HTTP_STATE_UNKNOWN_METHOD ||
627 con->operation == HTTP_STATE_UNKNOWN_VERSION)
ef416fc2 628 {
d21dc0ed 629 if (httpError(con->http))
996acce8
MS		 630 cupsdLogClient(con, CUPSD_LOG_DEBUG,
631 "HTTP_STATE_WAITING Closing for error %d (%s)",
5ec1fd3d 632 httpError(con->http), strerror(httpError(con->http)));
f11a948a 633 else
996acce8 634 cupsdLogClient(con, CUPSD_LOG_DEBUG,
d21dc0ed
MS		 635 "HTTP_STATE_WAITING Closing on error: %s",
636 cupsLastErrorString());
f11a948a 637
f7deaa1a 638 cupsdCloseClient(con);
639 return;
ef416fc2 640 }
641
642 /*
643 * Ignore blank request lines...
644 */
645
d21dc0ed 646 if (con->operation == HTTP_STATE_WAITING)
ef416fc2 647 break;
648
649 /*
650 * Clear other state variables...
651 */
652
d21dc0ed
MS		 653 con->bytes = 0;
654 con->file = -1;
655 con->file_ready = 0;
656 con->pipe_pid = 0;
657 con->username[0] = '\0';
658 con->password[0] = '\0';
ef416fc2 659
660 cupsdClearString(&con->command);
661 cupsdClearString(&con->options);
b86bc4cf 662 cupsdClearString(&con->query_string);
ef416fc2 663
2abf387c 664 if (con->request)
665 {
666 ippDelete(con->request);
667 con->request = NULL;
668 }
669
670 if (con->response)
671 {
672 ippDelete(con->response);
673 con->response = NULL;
674 }
675
676 if (con->language)
ef416fc2 677 {
678 cupsLangFree(con->language);
679 con->language = NULL;
680 }
681
09a101d6 682#ifdef HAVE_GSSAPI
97c9a8d7 683 con->have_gss = 0;
07ed0e9a 684 con->gss_uid = 0;
09a101d6 685#endif /* HAVE_GSSAPI */
686
ef416fc2 687 /*
688 * Handle full URLs in the request line...
689 */
690
691 if (strcmp(con->uri, "*"))
692 {
e6013cfa 693 char scheme[HTTP_MAX_URI], /* Method/scheme */
ef416fc2 694 userpass[HTTP_MAX_URI], /* Username:password */
695 hostname[HTTP_MAX_URI], /* Hostname */
696 resource[HTTP_MAX_URI]; /* Resource path */
697 int port; /* Port number */
698
ef416fc2 699 /*
700 * Separate the URI into its components...
701 */
702
d21dc0ed
MS		 703 if (httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
704 scheme, sizeof(scheme),
705 userpass, sizeof(userpass),
706 hostname, sizeof(hostname), &port,
707 resource, sizeof(resource)) < HTTP_URI_STATUS_OK)
708 {
709 cupsdLogClient(con, CUPSD_LOG_ERROR, "Bad URI \"%s\" in request.",
710 con->uri);
711 cupsdSendError(con, HTTP_STATUS_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE);
712 cupsdCloseClient(con);
713 return;
714 }
ef416fc2 715
d21dc0ed 716 /*
ef416fc2 717 * Only allow URIs with the servername, localhost, or an IP
718 * address...
719 */
720
e6013cfa 721 if (strcmp(scheme, "file") &&
88f9aafc
MS		 722 _cups_strcasecmp(hostname, ServerName) &&
723 _cups_strcasecmp(hostname, "localhost") &&
d21dc0ed 724 !cupsArrayFind(ServerAlias, hostname) &&
e6013cfa 725 !isdigit(hostname[0]) && hostname[0] != '[')
ef416fc2 726 {
727 /*
728 * Nope, we don't do proxies...
729 */
730
996acce8
MS		 731 cupsdLogClient(con, CUPSD_LOG_ERROR, "Bad URI \"%s\" in request.",
732 con->uri);
5ec1fd3d 733 cupsdSendError(con, HTTP_STATUS_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE);
f7deaa1a 734 cupsdCloseClient(con);
735 return;
ef416fc2 736 }
737
738 /*
739 * Copy the resource portion back into the URI; both resource and
740 * con->uri are HTTP_MAX_URI bytes in size...
741 */
742
5a9febac 743 strlcpy(con->uri, resource, sizeof(con->uri));
ef416fc2 744 }
745
746 /*
747 * Process the request...
748 */
749
dfd5680b 750 gettimeofday(&(con->start), NULL);
ef416fc2 751
996acce8 752 cupsdLogClient(con, CUPSD_LOG_DEBUG, "%s %s HTTP/%d.%d",
a73ca01e 753 httpStateString(con->operation) + 11, con->uri,
d21dc0ed
MS		 754 httpGetVersion(con->http) / 100,
755 httpGetVersion(con->http) % 100);
ef416fc2 756
49d87452
MS		 757 if (!cupsArrayFind(ActiveClients, con))
758 {
759 cupsArrayAdd(ActiveClients, con);
e4e37194 760 cupsdSetBusyState(0);
49d87452 761 }
3dfe78b3 762
cb7f98ee
MS		 763 case HTTP_STATE_OPTIONS :
764 case HTTP_STATE_DELETE :
765 case HTTP_STATE_GET :
766 case HTTP_STATE_HEAD :
767 case HTTP_STATE_POST :
768 case HTTP_STATE_PUT :
769 case HTTP_STATE_TRACE :
ef416fc2 770 /*
771 * Parse incoming parameters until the status changes...
772 */
773
5ec1fd3d
MS		 774 while ((status = httpUpdate(con->http)) == HTTP_STATUS_CONTINUE)
775 if (!httpGetReady(con->http))
f7deaa1a 776 break;
ef416fc2 777
5ec1fd3d 778 if (status != HTTP_STATUS_OK && status != HTTP_STATUS_CONTINUE)
ef416fc2 779 {
5ec1fd3d 780 if (httpError(con->http) && httpError(con->http) != EPIPE)
996acce8
MS		 781 cupsdLogClient(con, CUPSD_LOG_DEBUG,
782 "Closing for error %d (%s) while reading headers.",
5ec1fd3d 783 httpError(con->http), strerror(httpError(con->http)));
f11a948a 784 else
996acce8
MS		 785 cupsdLogClient(con, CUPSD_LOG_DEBUG,
786 "Closing on EOF while reading headers.");
f11a948a 787
5ec1fd3d 788 cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 789 cupsdCloseClient(con);
790 return;
ef416fc2 791 }
792 break;
793
794 default :
5ec1fd3d 795 if (!httpGetReady(con->http) && recv(httpGetFd(con->http), buf, 1, MSG_PEEK) < 1)
e6013cfa
MS		 796 {
797 /*
798 * Connection closed...
799 */
800
996acce8 801 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on EOF.");
e6013cfa
MS		 802 cupsdCloseClient(con);
803 return;
804 }
ef416fc2 805 break; /* Anti-compiler-warning-code */
806 }
807
808 /*
809 * Handle new transfers...
810 */
811
884b7ed1 812 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Read: status=%d, state=%d", status, httpGetState(con->http));
dfc45c1b 813
5ec1fd3d 814 if (status == HTTP_STATUS_OK)
ef416fc2 815 {
5ec1fd3d 816 if (httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE)[0])
ef416fc2 817 {
818 /*
819 * Figure out the locale from the Accept-Language and Content-Type
820 * fields...
821 */
822
5ec1fd3d 823 if ((ptr = strchr(httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE),
f11a948a 824 ',')) != NULL)
ef416fc2 825 *ptr = '\0';
826
5ec1fd3d 827 if ((ptr = strchr(httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE),
f11a948a 828 ';')) != NULL)
ef416fc2 829 *ptr = '\0';
830
5ec1fd3d 831 if ((ptr = strstr(httpGetField(con->http, HTTP_FIELD_CONTENT_TYPE),
f11a948a 832 "charset=")) != NULL)
ef416fc2 833 {
834 /*
835 * Combine language and charset, and trim any extra params in the
836 * content-type.
837 */
838
839 snprintf(locale, sizeof(locale), "%s.%s",
5ec1fd3d 840 httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE), ptr + 8);
ef416fc2 841
842 if ((ptr = strchr(locale, ',')) != NULL)
843 *ptr = '\0';
844 }
845 else
f8b3a85b 846 snprintf(locale, sizeof(locale), "%s.UTF-8",
5ec1fd3d 847 httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE));
d6ae789d 848
ef416fc2 849 con->language = cupsLangGet(locale);
850 }
851 else
852 con->language = cupsLangGet(DefaultLocale);
853
854 cupsdAuthorize(con);
855
5ec1fd3d 856 if (!_cups_strncasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION),
85dda01c 857 "Keep-Alive", 10) && KeepAlive)
5ec1fd3d
MS		 858 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_ON);
859 else if (!_cups_strncasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION),
85dda01c 860 "close", 5))
5ec1fd3d 861 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
ef416fc2 862
5ec1fd3d
MS		 863 if (!httpGetField(con->http, HTTP_FIELD_HOST)[0] &&
864 httpGetVersion(con->http) >= HTTP_VERSION_1_1)
ef416fc2 865 {
866 /*
867 * HTTP/1.1 and higher require the "Host:" field...
868 */
869
5ec1fd3d 870 if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 871 {
996acce8 872 cupsdLogClient(con, CUPSD_LOG_ERROR, "Missing Host: field in request.");
f7deaa1a 873 cupsdCloseClient(con);
874 return;
875 }
ef416fc2 876 }
e07d4801 877 else if (!valid_host(con))
e6013cfa
MS		 878 {
879 /*
880 * Access to localhost must use "localhost" or the corresponding IPv4
881 * or IPv6 values in the Host: field.
882 */
883
996acce8
MS		 884 cupsdLogClient(con, CUPSD_LOG_ERROR,
885 "Request from \"%s\" using invalid Host: field \"%s\".",
5ec1fd3d 886 httpGetHostname(con->http, NULL, 0), httpGetField(con->http, HTTP_FIELD_HOST));
e6013cfa 887
5ec1fd3d 888 if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE))
e6013cfa
MS		 889 {
890 cupsdCloseClient(con);
891 return;
892 }
893 }
cb7f98ee 894 else if (con->operation == HTTP_STATE_OPTIONS)
ef416fc2 895 {
896 /*
897 * Do OPTIONS command...
898 */
899
5bd77a73 900 if (con->best && con->best->type != CUPSD_AUTH_NONE)
ef416fc2 901 {
a73ca01e
MS		 902 httpClearFields(con->http);
903
5ec1fd3d 904 if (!cupsdSendHeader(con, HTTP_STATUS_UNAUTHORIZED, NULL, CUPSD_AUTH_NONE))
f7deaa1a 905 {
906 cupsdCloseClient(con);
907 return;
908 }
ef416fc2 909 }
910
a80b2360 911 if (!_cups_strcasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION), "Upgrade") && strstr(httpGetField(con->http, HTTP_FIELD_UPGRADE), "TLS/") != NULL && !httpIsEncrypted(con->http))
ef416fc2 912 {
913#ifdef HAVE_SSL
914 /*
915 * Do encryption stuff...
916 */
917
a73ca01e 918 httpClearFields(con->http);
ef416fc2 919
e200616a
MS		 920 if (!cupsdSendHeader(con, HTTP_STATUS_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE))
921 {
922 cupsdCloseClient(con);
923 return;
924 }
e200616a 925
d3d89474 926 if (cupsd_start_tls(con, HTTP_ENCRYPTION_REQUIRED))
f7deaa1a 927 {
928 cupsdCloseClient(con);
929 return;
930 }
ef416fc2 931#else
7d5824d6 932 if (!cupsdSendError(con, HTTP_STATUS_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 933 {
934 cupsdCloseClient(con);
935 return;
936 }
ef416fc2 937#endif /* HAVE_SSL */
938 }
939
a73ca01e 940 httpClearFields(con->http);
e200616a
MS		 941 httpSetField(con->http, HTTP_FIELD_ALLOW,
942 "GET, HEAD, OPTIONS, POST, PUT");
943 httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0");
944
945 if (!cupsdSendHeader(con, HTTP_STATUS_OK, NULL, CUPSD_AUTH_NONE))
946 {
947 cupsdCloseClient(con);
948 return;
949 }
ef416fc2 950 }
951 else if (!is_path_absolute(con->uri))
952 {
953 /*
954 * Protect against malicious users!
955 */
956
996acce8
MS		 957 cupsdLogClient(con, CUPSD_LOG_ERROR,
958 "Request for non-absolute resource \"%s\".", con->uri);
bf3816c7 959
5ec1fd3d 960 if (!cupsdSendError(con, HTTP_STATUS_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 961 {
962 cupsdCloseClient(con);
963 return;
964 }
ef416fc2 965 }
966 else
967 {
5ec1fd3d 968 if (!_cups_strcasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION),
d21dc0ed 969 "Upgrade") && !httpIsEncrypted(con->http))
ef416fc2 970 {
971#ifdef HAVE_SSL
972 /*
973 * Do encryption stuff...
974 */
975
a73ca01e 976 httpClearFields(con->http);
ef416fc2 977
e200616a
MS		 978 if (!cupsdSendHeader(con, HTTP_STATUS_SWITCHING_PROTOCOLS, NULL,
979 CUPSD_AUTH_NONE))
980 {
981 cupsdCloseClient(con);
982 return;
983 }
ef416fc2 984
d3d89474 985 if (cupsd_start_tls(con, HTTP_ENCRYPTION_REQUIRED))
f7deaa1a 986 {
987 cupsdCloseClient(con);
988 return;
989 }
ef416fc2 990#else
7d5824d6 991 if (!cupsdSendError(con, HTTP_STATUS_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 992 {
993 cupsdCloseClient(con);
994 return;
995 }
ef416fc2 996#endif /* HAVE_SSL */
997 }
998
5ec1fd3d 999 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_STATUS_OK)
ef416fc2 1000 {
5bd77a73 1001 cupsdSendError(con, status, CUPSD_AUTH_NONE);
f7deaa1a 1002 cupsdCloseClient(con);
1003 return;
ef416fc2 1004 }
1005
d21dc0ed 1006 if (httpGetExpect(con->http) &&
cb7f98ee 1007 (con->operation == HTTP_STATE_POST || con->operation == HTTP_STATE_PUT))
ef416fc2 1008 {
d21dc0ed 1009 if (httpGetExpect(con->http) == HTTP_STATUS_CONTINUE)
b423cd4c 1010 {
1011 /*
1012 * Send 100-continue header...
1013 */
1014
a73ca01e 1015 if (httpWriteResponse(con->http, HTTP_STATUS_CONTINUE))
f7deaa1a 1016 {
1017 cupsdCloseClient(con);
1018 return;
1019 }
b423cd4c 1020 }
1021 else
1022 {
1023 /*
1024 * Send 417-expectation-failed header...
1025 */
1026
a73ca01e 1027 httpClearFields(con->http);
e200616a
MS		 1028 httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0");
1029
a73ca01e
MS		 1030 cupsdSendError(con, HTTP_STATUS_EXPECTATION_FAILED, CUPSD_AUTH_NONE);
1031 cupsdCloseClient(con);
1032 return;
b423cd4c 1033 }
ef416fc2 1034 }
1035
5ec1fd3d 1036 switch (httpGetState(con->http))
ef416fc2 1037 {
cb7f98ee 1038 case HTTP_STATE_GET_SEND :
dfc45c1b
MS		 1039 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Processing GET %s", con->uri);
1040
2fa1ba3c
MS		 1041 if ((filename = get_file(con, &filestats, buf, sizeof(buf))) != NULL)
1042 {
1043 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1044
2fa1ba3c 1045 cupsdLogClient(con, CUPSD_LOG_DEBUG, "filename=\"%s\", type=%s/%s", filename, type ? type->super : "", type ? type->type : "");
ef416fc2 1046
2fa1ba3c 1047 if (is_cgi(con, filename, &filestats, type))
6961465f 1048 {
2fa1ba3c
MS		 1049 /*
1050 * Note: con->command and con->options were set by is_cgi()...
1051 */
6961465f 1052
2fa1ba3c 1053 if (!cupsdSendCommand(con, con->command, con->options, 0))
6961465f 1054 {
2fa1ba3c 1055 if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
6961465f 1056 {
2fa1ba3c
MS		 1057 cupsdCloseClient(con);
1058 return;
6961465f 1059 }
2fa1ba3c
MS		 1060 }
1061 else
1062 cupsdLogRequest(con, HTTP_STATUS_OK);
6961465f 1063
2fa1ba3c
MS		 1064 if (httpGetVersion(con->http) <= HTTP_VERSION_1_0)
1065 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
1066 break;
6961465f 1067 }
db8b865d 1068
2fa1ba3c
MS		 1069 if (!check_if_modified(con, &filestats))
1070 {
1071 if (!cupsdSendError(con, HTTP_STATUS_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1072 {
1073 cupsdCloseClient(con);
1074 return;
1075 }
ef416fc2 1076 }
2fa1ba3c 1077 else
6961465f 1078 {
2fa1ba3c
MS		 1079 if (type == NULL)
1080 strlcpy(line, "text/plain", sizeof(line));
1081 else
1082 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
7cf5915e 1083
2fa1ba3c 1084 if (!write_file(con, HTTP_STATUS_OK, filename, line, &filestats))
7cf5915e
MS		 1085 {
1086 cupsdCloseClient(con);
1087 return;
1088 }
7cf5915e 1089 }
2fa1ba3c
MS		 1090 }
1091 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 1092 {
f07c0121
MS		 1093 if (!WebInterface)
1094 {
1095 /*
1096 * Web interface is disabled. Show an appropriate message...
1097 */
1098
1099 if (!cupsdSendError(con, HTTP_STATUS_CUPS_WEBIF_DISABLED, CUPSD_AUTH_NONE))
1100 {
1101 cupsdCloseClient(con);
1102 return;
1103 }
1104
1105 break;
1106 }
1107
ef416fc2 1108 /*
1109 * Send CGI output...
1110 */
1111
1112 if (!strncmp(con->uri, "/admin", 6))
1113 {
2fa1ba3c 1114 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi", ServerBin);
b423cd4c 1115 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1116 }
1117 else if (!strncmp(con->uri, "/printers", 9))
1118 {
2fa1ba3c 1119 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi", ServerBin);
b423cd4c 1120 if (con->uri[9] && con->uri[10])
1121 cupsdSetString(&con->options, con->uri + 9);
1122 else
1123 cupsdSetString(&con->options, NULL);
ef416fc2 1124 }
1125 else if (!strncmp(con->uri, "/classes", 8))
1126 {
2fa1ba3c 1127 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi", ServerBin);
b423cd4c 1128 if (con->uri[8] && con->uri[9])
1129 cupsdSetString(&con->options, con->uri + 8);
1130 else
1131 cupsdSetString(&con->options, NULL);
ef416fc2 1132 }
1133 else if (!strncmp(con->uri, "/jobs", 5))
1134 {
2fa1ba3c 1135 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi", ServerBin);
b423cd4c 1136 if (con->uri[5] && con->uri[6])
1137 cupsdSetString(&con->options, con->uri + 5);
1138 else
1139 cupsdSetString(&con->options, NULL);
ef416fc2 1140 }
1141 else
1142 {
2fa1ba3c 1143 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi", ServerBin);
b423cd4c 1144 if (con->uri[5] && con->uri[6])
1145 cupsdSetString(&con->options, con->uri + 5);
1146 else
1147 cupsdSetString(&con->options, NULL);
1148 }
ef416fc2 1149
1150 if (!cupsdSendCommand(con, con->command, con->options, 0))
1151 {
5ec1fd3d 1152 if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1153 {
1154 cupsdCloseClient(con);
1155 return;
1156 }
ef416fc2 1157 }
1158 else
5ec1fd3d 1159 cupsdLogRequest(con, HTTP_STATUS_OK);
ef416fc2 1160
d21dc0ed 1161 if (httpGetVersion(con->http) <= HTTP_VERSION_1_0)
5ec1fd3d 1162 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
ef416fc2 1163 }
2fa1ba3c 1164 else
ef416fc2 1165 {
2fa1ba3c 1166 if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1167 {
1168 cupsdCloseClient(con);
1169 return;
1170 }
ef416fc2 1171 }
1172 break;
1173
cb7f98ee 1174 case HTTP_STATE_POST_RECV :
ef416fc2 1175 /*
1176 * See if the POST request includes a Content-Length field, and if
1177 * so check the length against any limits that are set...
1178 */
1179
2fa1ba3c 1180 if (httpGetField(con->http, HTTP_FIELD_CONTENT_LENGTH)[0] && MaxRequestSize > 0 && httpGetLength2(con->http) > MaxRequestSize)
ef416fc2 1181 {
1182 /*
1183 * Request too large...
1184 */
1185
5ec1fd3d 1186 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1187 {
1188 cupsdCloseClient(con);
1189 return;
1190 }
ef416fc2 1191
1192 break;
1193 }
d21dc0ed 1194 else if (httpGetLength2(con->http) < 0)
ef416fc2 1195 {
1196 /*
1197 * Negative content lengths are invalid!
1198 */
1199
5ec1fd3d 1200 if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1201 {
1202 cupsdCloseClient(con);
1203 return;
1204 }
ef416fc2 1205
1206 break;
1207 }
1208
1209 /*
1210 * See what kind of POST request this is; for IPP requests the
1211 * content-type field will be "application/ipp"...
1212 */
1213
2fa1ba3c
MS		 1214 if (!strcmp(httpGetField(con->http, HTTP_FIELD_CONTENT_TYPE), "application/ipp"))
1215 {
ef416fc2 1216 con->request = ippNew();
2fa1ba3c
MS		 1217 break;
1218 }
229681c1
MS		 1219 else if (!WebInterface)
1220 {
1221 /*
1222 * Web interface is disabled. Show an appropriate message...
1223 */
1224
5ec1fd3d 1225 if (!cupsdSendError(con, HTTP_STATUS_CUPS_WEBIF_DISABLED, CUPSD_AUTH_NONE))
229681c1
MS		 1226 {
1227 cupsdCloseClient(con);
1228 return;
1229 }
1230
1231 break;
1232 }
2fa1ba3c
MS		 1233
1234 if ((filename = get_file(con, &filestats, buf, sizeof(buf))) != NULL)
1235 {
1236 /*
1237 * POST to a file...
1238 */
1239
1240 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
1241
1242 if (!is_cgi(con, filename, &filestats, type))
1243 {
1244 /*
1245 * Only POST to CGI's...
1246 */
1247
1248 if (!cupsdSendError(con, HTTP_STATUS_UNAUTHORIZED, CUPSD_AUTH_NONE))
1249 {
1250 cupsdCloseClient(con);
1251 return;
1252 }
1253 }
1254 }
1255 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 1256 {
1257 /*
1258 * CGI request...
1259 */
1260
1261 if (!strncmp(con->uri, "/admin", 6))
1262 {
2fa1ba3c 1263 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi", ServerBin);
b423cd4c 1264 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1265 }
1266 else if (!strncmp(con->uri, "/printers", 9))
1267 {
2fa1ba3c 1268 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi", ServerBin);
b423cd4c 1269 if (con->uri[9] && con->uri[10])
1270 cupsdSetString(&con->options, con->uri + 9);
1271 else
1272 cupsdSetString(&con->options, NULL);
ef416fc2 1273 }
1274 else if (!strncmp(con->uri, "/classes", 8))
1275 {
2fa1ba3c 1276 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi", ServerBin);
b423cd4c 1277 if (con->uri[8] && con->uri[9])
1278 cupsdSetString(&con->options, con->uri + 8);
1279 else
1280 cupsdSetString(&con->options, NULL);
ef416fc2 1281 }
1282 else if (!strncmp(con->uri, "/jobs", 5))
1283 {
2fa1ba3c 1284 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi", ServerBin);
b423cd4c 1285 if (con->uri[5] && con->uri[6])
1286 cupsdSetString(&con->options, con->uri + 5);
1287 else
1288 cupsdSetString(&con->options, NULL);
ef416fc2 1289 }
1290 else
1291 {
2fa1ba3c 1292 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi", ServerBin);
b423cd4c 1293 if (con->uri[5] && con->uri[6])
1294 cupsdSetString(&con->options, con->uri + 5);
1295 else
1296 cupsdSetString(&con->options, NULL);
1297 }
ef416fc2 1298
d21dc0ed 1299 if (httpGetVersion(con->http) <= HTTP_VERSION_1_0)
5ec1fd3d 1300 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
ef416fc2 1301 }
1302 else
1303 {
2fa1ba3c 1304 if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
ef416fc2 1305 {
2fa1ba3c
MS		 1306 cupsdCloseClient(con);
1307 return;
ef416fc2 1308 }
1309 }
1310 break;
1311
cb7f98ee 1312 case HTTP_STATE_PUT_RECV :
ef416fc2 1313 /*
1314 * Validate the resource name...
1315 */
1316
c41769ff 1317 if (strcmp(con->uri, "/admin/conf/cupsd.conf"))
ef416fc2 1318 {
1319 /*
c41769ff 1320 * PUT can only be done to the cupsd.conf file...
ef416fc2 1321 */
1322
2fa1ba3c 1323 cupsdLogClient(con, CUPSD_LOG_ERROR, "Disallowed PUT request for \"%s\".", con->uri);
bf3816c7 1324
5ec1fd3d 1325 if (!cupsdSendError(con, HTTP_STATUS_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1326 {
1327 cupsdCloseClient(con);
1328 return;
1329 }
ef416fc2 1330
1331 break;
1332 }
1333
1334 /*
1335 * See if the PUT request includes a Content-Length field, and if
1336 * so check the length against any limits that are set...
1337 */
1338
2fa1ba3c 1339 if (httpGetField(con->http, HTTP_FIELD_CONTENT_LENGTH)[0] && MaxRequestSize > 0 && httpGetLength2(con->http) > MaxRequestSize)
ef416fc2 1340 {
1341 /*
1342 * Request too large...
1343 */
1344
5ec1fd3d 1345 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1346 {
1347 cupsdCloseClient(con);
1348 return;
1349 }
ef416fc2 1350
1351 break;
1352 }
d21dc0ed 1353 else if (httpGetLength2(con->http) < 0)
ef416fc2 1354 {
1355 /*
1356 * Negative content lengths are invalid!
1357 */
1358
5ec1fd3d 1359 if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1360 {
1361 cupsdCloseClient(con);
1362 return;
1363 }
ef416fc2 1364
1365 break;
1366 }
1367
1368 /*
1369 * Open a temporary file to hold the request...
1370 */
1371
2fa1ba3c 1372 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
ef416fc2 1373 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1374
ef416fc2 1375 if (con->file < 0)
1376 {
2fa1ba3c 1377 cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to create request file \"%s\": %s", con->filename, strerror(errno));
a4924f6c 1378
5ec1fd3d 1379 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1380 {
1381 cupsdCloseClient(con);
1382 return;
1383 }
ef416fc2 1384 }
1385
1386 fchmod(con->file, 0640);
1387 fchown(con->file, RunUser, Group);
1388 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1389 break;
1390
cb7f98ee
MS		 1391 case HTTP_STATE_DELETE :
1392 case HTTP_STATE_TRACE :
5ec1fd3d 1393 cupsdSendError(con, HTTP_STATUS_NOT_IMPLEMENTED, CUPSD_AUTH_NONE);
f7deaa1a 1394 cupsdCloseClient(con);
1395 return;
ef416fc2 1396
cb7f98ee 1397 case HTTP_STATE_HEAD :
2fa1ba3c
MS		 1398 if ((filename = get_file(con, &filestats, buf, sizeof(buf))) != NULL)
1399 {
1400 if (!check_if_modified(con, &filestats))
ef416fc2 1401 {
2fa1ba3c 1402 if (!cupsdSendError(con, HTTP_STATUS_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1403 {
1404 cupsdCloseClient(con);
1405 return;
1406 }
ef416fc2 1407
2fa1ba3c 1408 cupsdLogRequest(con, HTTP_STATUS_NOT_MODIFIED);
ef416fc2 1409 }
229681c1
MS		 1410 else
1411 {
2fa1ba3c
MS		 1412 /*
1413 * Serve a file...
1414 */
1415
1416 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
1417 if (type == NULL)
1418 strlcpy(line, "text/plain", sizeof(line));
1419 else
1420 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1421
1422 httpClearFields(con->http);
1423
1424 httpSetField(con->http, HTTP_FIELD_LAST_MODIFIED, httpGetDateString(filestats.st_mtime));
1425 httpSetLength(con->http, (size_t)filestats.st_size);
1426
1427 if (!cupsdSendHeader(con, HTTP_STATUS_OK, line, CUPSD_AUTH_NONE))
229681c1
MS		 1428 {
1429 cupsdCloseClient(con);
1430 return;
1431 }
1432
2fa1ba3c 1433 cupsdLogRequest(con, HTTP_STATUS_OK);
229681c1 1434 }
2fa1ba3c 1435 }
229681c1
MS		 1436 else if (!WebInterface)
1437 {
a73ca01e
MS		 1438 httpClearFields(con->http);
1439
5ec1fd3d 1440 if (!cupsdSendHeader(con, HTTP_STATUS_OK, NULL, CUPSD_AUTH_NONE))
229681c1
MS		 1441 {
1442 cupsdCloseClient(con);
1443 return;
1444 }
1445
e200616a 1446 cupsdLogRequest(con, HTTP_STATUS_OK);
229681c1
MS		 1447 break;
1448 }
ef416fc2 1449
2fa1ba3c 1450 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 1451 {
1452 /*
1453 * CGI output...
1454 */
1455
a73ca01e
MS		 1456 httpClearFields(con->http);
1457
5ec1fd3d 1458 if (!cupsdSendHeader(con, HTTP_STATUS_OK, "text/html", CUPSD_AUTH_NONE))
f7deaa1a 1459 {
1460 cupsdCloseClient(con);
1461 return;
1462 }
ef416fc2 1463
5ec1fd3d 1464 cupsdLogRequest(con, HTTP_STATUS_OK);
ef416fc2 1465 }
ef416fc2 1466 else
1467 {
a73ca01e
MS		 1468 httpClearFields(con->http);
1469
2fa1ba3c 1470 if (!cupsdSendHeader(con, HTTP_STATUS_NOT_FOUND, "text/html", CUPSD_AUTH_NONE))
f7deaa1a 1471 {
1472 cupsdCloseClient(con);
1473 return;
1474 }
ef416fc2 1475
2fa1ba3c 1476 cupsdLogRequest(con, HTTP_STATUS_NOT_FOUND);
ef416fc2 1477 }
ef416fc2 1478 break;
1479
1480 default :
1481 break; /* Anti-compiler-warning-code */
1482 }
1483 }
1484 }
1485
1486 /*
1487 * Handle any incoming data...
1488 */
1489
5ec1fd3d 1490 switch (httpGetState(con->http))
ef416fc2 1491 {
cb7f98ee 1492 case HTTP_STATE_PUT_RECV :
f7deaa1a 1493 do
ef416fc2 1494 {
996acce8 1495 if ((bytes = httpRead2(con->http, line, sizeof(line))) < 0)
f7deaa1a 1496 {
5ec1fd3d 1497 if (httpError(con->http) && httpError(con->http) != EPIPE)
996acce8
MS		 1498 cupsdLogClient(con, CUPSD_LOG_DEBUG,
1499 "HTTP_STATE_PUT_RECV Closing for error %d (%s)",
5ec1fd3d 1500 httpError(con->http), strerror(httpError(con->http)));
f11a948a 1501 else
996acce8
MS		 1502 cupsdLogClient(con, CUPSD_LOG_DEBUG,
1503 "HTTP_STATE_PUT_RECV Closing on EOF.");
f11a948a 1504
f7deaa1a 1505 cupsdCloseClient(con);
1506 return;
1507 }
1508 else if (bytes > 0)
1509 {
1510 con->bytes += bytes;
ef416fc2 1511
34c67f13
MS		 1512 if (MaxRequestSize > 0 && con->bytes > MaxRequestSize)
1513 {
1514 close(con->file);
1515 con->file = -1;
1516 unlink(con->filename);
1517 cupsdClearString(&con->filename);
1518
1519 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
1520 {
1521 cupsdCloseClient(con);
1522 return;
1523 }
1524 }
1525
7e86f2f6 1526 if (write(con->file, line, (size_t)bytes) < bytes)
f7deaa1a 1527 {
996acce8
MS		 1528 cupsdLogClient(con, CUPSD_LOG_ERROR,
1529 "Unable to write %d bytes to \"%s\": %s", bytes,
1530 con->filename, strerror(errno));
ef416fc2 1531
f7deaa1a 1532 close(con->file);
1533 con->file = -1;
1534 unlink(con->filename);
1535 cupsdClearString(&con->filename);
ef416fc2 1536
5ec1fd3d 1537 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1538 {
1539 cupsdCloseClient(con);
1540 return;
1541 }
1542 }
ef416fc2 1543 }
a4708bb0
MS		 1544 else if (httpGetState(con->http) == HTTP_STATE_PUT_RECV)
1545 {
1546 cupsdCloseClient(con);
1547 return;
1548 }
f7deaa1a 1549 }
5ec1fd3d 1550 while (httpGetState(con->http) == HTTP_STATE_PUT_RECV && httpGetReady(con->http));
ef416fc2 1551
5ec1fd3d 1552 if (httpGetState(con->http) == HTTP_STATE_STATUS)
ef416fc2 1553 {
1554 /*
1555 * End of file, see how big it is...
1556 */
1557
1558 fstat(con->file, &filestats);
1559
ef416fc2 1560 close(con->file);
1561 con->file = -1;
1562
1563 if (filestats.st_size > MaxRequestSize &&
1564 MaxRequestSize > 0)
1565 {
1566 /*
1567 * Request is too big; remove it and send an error...
1568 */
1569
ef416fc2 1570 unlink(con->filename);
1571 cupsdClearString(&con->filename);
1572
5ec1fd3d 1573 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1574 {
1575 cupsdCloseClient(con);
1576 return;
1577 }
ef416fc2 1578 }
1579
1580 /*
1581 * Install the configuration file...
1582 */
1583
c41769ff 1584 status = install_cupsd_conf(con);
ef416fc2 1585
1586 /*
1587 * Return the status to the client...
1588 */
1589
5bd77a73 1590 if (!cupsdSendError(con, status, CUPSD_AUTH_NONE))
f7deaa1a 1591 {
1592 cupsdCloseClient(con);
1593 return;
1594 }
ef416fc2 1595 }
1596 break;
1597
cb7f98ee 1598 case HTTP_STATE_POST_RECV :
f7deaa1a 1599 do
ef416fc2 1600 {
f11a948a 1601 if (con->request && con->file < 0)
ef416fc2 1602 {
f7deaa1a 1603 /*
1604 * Grab any request data from the connection...
1605 */
ef416fc2 1606
175bc798
MS		 1607 if (!httpWait(con->http, 0))
1608 return;
1609
5ec1fd3d 1610 if ((ipp_state = ippRead(con->http, con->request)) == IPP_STATE_ERROR)
ef416fc2 1611 {
996acce8
MS		 1612 cupsdLogClient(con, CUPSD_LOG_ERROR, "IPP read error: %s",
1613 cupsLastErrorString());
f7deaa1a 1614
5ec1fd3d 1615 cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 1616 cupsdCloseClient(con);
1617 return;
ef416fc2 1618 }
5ec1fd3d 1619 else if (ipp_state != IPP_STATE_DATA)
f7deaa1a 1620 {
5ec1fd3d 1621 if (httpGetState(con->http) == HTTP_STATE_POST_SEND)
f7deaa1a 1622 {
5ec1fd3d 1623 cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 1624 cupsdCloseClient(con);
1625 return;
1626 }
ef416fc2 1627
5ec1fd3d 1628 if (httpGetReady(con->http))
6961465f 1629 continue;
f7deaa1a 1630 break;
1631 }
1632 else
f11a948a 1633 {
996acce8
MS		 1634 cupsdLogClient(con, CUPSD_LOG_DEBUG, "%d.%d %s %d",
1635 con->request->request.op.version[0],
f11a948a
MS		 1636 con->request->request.op.version[1],
1637 ippOpString(con->request->request.op.operation_id),
1638 con->request->request.op.request_id);
7d5824d6 1639 con->bytes += (off_t)ippLength(con->request);
f11a948a 1640 }
f7deaa1a 1641 }
ef416fc2 1642
5ec1fd3d 1643 if (con->file < 0 && httpGetState(con->http) != HTTP_STATE_POST_SEND)
f7deaa1a 1644 {
1645 /*
1646 * Create a file as needed for the request data...
1647 */
ef416fc2 1648
f11a948a
MS		 1649 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1650 request_id ++);
f7deaa1a 1651 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
ef416fc2 1652
f7deaa1a 1653 if (con->file < 0)
1654 {
996acce8
MS		 1655 cupsdLogClient(con, CUPSD_LOG_ERROR,
1656 "Unable to create request file \"%s\": %s",
1657 con->filename, strerror(errno));
a4924f6c 1658
5ec1fd3d 1659 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1660 {
1661 cupsdCloseClient(con);
1662 return;
1663 }
1664 }
ef416fc2 1665
f7deaa1a 1666 fchmod(con->file, 0640);
1667 fchown(con->file, RunUser, Group);
1668 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1669 }
ef416fc2 1670
5ec1fd3d 1671 if (httpGetState(con->http) != HTTP_STATE_POST_SEND)
ef416fc2 1672 {
996acce8 1673 if (!httpWait(con->http, 0))
cb7f98ee 1674 return;
996acce8 1675 else if ((bytes = httpRead2(con->http, line, sizeof(line))) < 0)
f7deaa1a 1676 {
5ec1fd3d 1677 if (httpError(con->http) && httpError(con->http) != EPIPE)
996acce8
MS		 1678 cupsdLogClient(con, CUPSD_LOG_DEBUG,
1679 "HTTP_STATE_POST_SEND Closing for error %d (%s)",
5ec1fd3d 1680 httpError(con->http), strerror(httpError(con->http)));
f11a948a 1681 else
996acce8
MS		 1682 cupsdLogClient(con, CUPSD_LOG_DEBUG,
1683 "HTTP_STATE_POST_SEND Closing on EOF.");
f11a948a 1684
f7deaa1a 1685 cupsdCloseClient(con);
1686 return;
1687 }
1688 else if (bytes > 0)
1689 {
1690 con->bytes += bytes;
ef416fc2 1691
34c67f13
MS		 1692 if (MaxRequestSize > 0 && con->bytes > MaxRequestSize)
1693 {
1694 close(con->file);
1695 con->file = -1;
1696 unlink(con->filename);
1697 cupsdClearString(&con->filename);
1698
1699 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
1700 {
1701 cupsdCloseClient(con);
1702 return;
1703 }
1704 }
1705
7e86f2f6 1706 if (write(con->file, line, (size_t)bytes) < bytes)
f7deaa1a 1707 {
996acce8
MS		 1708 cupsdLogClient(con, CUPSD_LOG_ERROR,
1709 "Unable to write %d bytes to \"%s\": %s",
1710 bytes, con->filename, strerror(errno));
ef416fc2 1711
f7deaa1a 1712 close(con->file);
1713 con->file = -1;
1714 unlink(con->filename);
1715 cupsdClearString(&con->filename);
ef416fc2 1716
5ec1fd3d 1717 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE,
f11a948a 1718 CUPSD_AUTH_NONE))
f7deaa1a 1719 {
1720 cupsdCloseClient(con);
1721 return;
1722 }
1723 }
1724 }
5ec1fd3d 1725 else if (httpGetState(con->http) == HTTP_STATE_POST_RECV)
f7deaa1a 1726 return;
5ec1fd3d 1727 else if (httpGetState(con->http) != HTTP_STATE_POST_SEND)
f7deaa1a 1728 {
996acce8
MS		 1729 cupsdLogClient(con, CUPSD_LOG_DEBUG,
1730 "Closing on unexpected state %s.",
5ec1fd3d 1731 httpStateString(httpGetState(con->http)));
f7deaa1a 1732 cupsdCloseClient(con);
1733 return;
ef416fc2 1734 }
1735 }
f7deaa1a 1736 }
5ec1fd3d 1737 while (httpGetState(con->http) == HTTP_STATE_POST_RECV && httpGetReady(con->http));
ef416fc2 1738
5ec1fd3d 1739 if (httpGetState(con->http) == HTTP_STATE_POST_SEND)
ef416fc2 1740 {
1741 if (con->file >= 0)
1742 {
1743 fstat(con->file, &filestats);
1744
ef416fc2 1745 close(con->file);
1746 con->file = -1;
1747
1748 if (filestats.st_size > MaxRequestSize &&
1749 MaxRequestSize > 0)
1750 {
1751 /*
1752 * Request is too big; remove it and send an error...
1753 */
1754
ef416fc2 1755 unlink(con->filename);
1756 cupsdClearString(&con->filename);
1757
1758 if (con->request)
1759 {
1760 /*
1761 * Delete any IPP request data...
1762 */
1763
1764 ippDelete(con->request);
1765 con->request = NULL;
1766 }
1767
5ec1fd3d 1768 if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1769 {
1770 cupsdCloseClient(con);
1771 return;
1772 }
ef416fc2 1773 }
f8b3a85b
MS		 1774 else if (filestats.st_size == 0)
1775 {
1776 /*
1777 * Don't allow empty file...
1778 */
1779
1780 unlink(con->filename);
1781 cupsdClearString(&con->filename);
1782 }
ef416fc2 1783
1784 if (con->command)
1785 {
1786 if (!cupsdSendCommand(con, con->command, con->options, 0))
1787 {
5ec1fd3d 1788 if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1789 {
1790 cupsdCloseClient(con);
1791 return;
1792 }
ef416fc2 1793 }
1794 else
5ec1fd3d 1795 cupsdLogRequest(con, HTTP_STATUS_OK);
ef416fc2 1796 }
1797 }
1798
1799 if (con->request)
f7deaa1a 1800 {
1801 cupsdProcessIPPRequest(con);
bc44d920 1802
1803 if (con->filename)
1804 {
bc44d920 1805 unlink(con->filename);
1806 cupsdClearString(&con->filename);
1807 }
1808
f7deaa1a 1809 return;
1810 }
ef416fc2 1811 }
1812 break;
1813
1814 default :
1815 break; /* Anti-compiler-warning-code */
1816 }
1817
5ec1fd3d 1818 if (httpGetState(con->http) == HTTP_STATE_WAITING)
3dfe78b3 1819 {
5ec1fd3d 1820 if (!httpGetKeepAlive(con->http))
f11a948a 1821 {
996acce8
MS		 1822 cupsdLogClient(con, CUPSD_LOG_DEBUG,
1823 "Closing because Keep-Alive is disabled.");
3dfe78b3 1824 cupsdCloseClient(con);
f11a948a 1825 }
3dfe78b3
MS		 1826 else
1827 {
1828 cupsArrayRemove(ActiveClients, con);
e4e37194 1829 cupsdSetBusyState(0);
3dfe78b3
MS		 1830 }
1831 }
ef416fc2 1832}
1833
1834
1835/*
1836 * 'cupsdSendCommand()' - Send output from a command via HTTP.
1837 */
1838
1839int /* O - 1 on success, 0 on failure */
1840cupsdSendCommand(
1841 cupsd_client_t *con, /* I - Client connection */
1842 char *command, /* I - Command to run */
1843 char *options, /* I - Command-line options */
1844 int root) /* I - Run as root? */
1845{
1846 int fd; /* Standard input file descriptor */
1847
1848
1849 if (con->filename)
ed486911 1850 {
ef416fc2 1851 fd = open(con->filename, O_RDONLY);
ef416fc2 1852
ed486911 1853 if (fd < 0)
1854 {
996acce8
MS		 1855 cupsdLogClient(con, CUPSD_LOG_ERROR,
1856 "Unable to open \"%s\" for reading: %s",
1857 con->filename ? con->filename : "/dev/null",
1858 strerror(errno));
ed486911 1859 return (0);
1860 }
ef416fc2 1861
ed486911 1862 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
1863 }
1864 else
1865 fd = -1;
ef416fc2 1866
e200616a
MS		 1867 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
1868 con->pipe_status = HTTP_STATUS_OK;
ef416fc2 1869
a73ca01e
MS		 1870 httpClearFields(con->http);
1871
ed486911 1872 if (fd >= 0)
1873 close(fd);
ef416fc2 1874
996acce8
MS		 1875 cupsdLogClient(con, CUPSD_LOG_INFO, "Started \"%s\" (pid=%d, file=%d)",
1876 command, con->pipe_pid, con->file);
ef416fc2 1877
1878 if (con->pipe_pid == 0)
1879 return (0);
1880
1881 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1882
f899b121 1883 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
ef416fc2 1884
996acce8 1885 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for CGI data.");
1bc82dd9 1886
ef416fc2 1887 con->sent_header = 0;
1888 con->file_ready = 0;
1889 con->got_fields = 0;
68b10830 1890 con->header_used = 0;
ef416fc2 1891
1892 return (1);
1893}
1894
1895
1896/*
1897 * 'cupsdSendError()' - Send an error message via HTTP.
1898 */
1899
1900int /* O - 1 if successful, 0 otherwise */
1901cupsdSendError(cupsd_client_t *con, /* I - Connection */
f899b121 1902 http_status_t code, /* I - Error code */
1903 int auth_type)/* I - Authentication type */
ef416fc2 1904{
f7c0e880
MS		 1905 char location[HTTP_MAX_VALUE]; /* Location field */
1906
1907
ffe32673 1908 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "cupsdSendError code=%d, auth_type=%d", code, auth_type);
b9faaae1 1909
4744bd90 1910#ifdef HAVE_SSL
1911 /*
1912 * Force client to upgrade for authentication if that is how the
1913 * server is configured...
1914 */
1915
5ec1fd3d
MS		 1916 if (code == HTTP_STATUS_UNAUTHORIZED &&
1917 DefaultEncryption == HTTP_ENCRYPTION_REQUIRED &&
1918 _cups_strcasecmp(httpGetHostname(con->http, NULL, 0), "localhost") &&
1919 !httpIsEncrypted(con->http))
4744bd90 1920 {
5ec1fd3d 1921 code = HTTP_STATUS_UPGRADE_REQUIRED;
4744bd90 1922 }
1923#endif /* HAVE_SSL */
1924
ef416fc2 1925 /*
1926 * Put the request in the access_log file...
1927 */
1928
1929 cupsdLogRequest(con, code);
1930
ef416fc2 1931 /*
1932 * To work around bugs in some proxies, don't use Keep-Alive for some
1933 * error messages...
f7deaa1a 1934 *
1935 * Kerberos authentication doesn't work without Keep-Alive, so
1936 * never disable it in that case.
ef416fc2 1937 */
1938
f7c0e880
MS		 1939 strlcpy(location, httpGetField(con->http, HTTP_FIELD_LOCATION), sizeof(location));
1940
a73ca01e
MS		 1941 httpClearFields(con->http);
1942
f7c0e880
MS		 1943 httpSetField(con->http, HTTP_FIELD_LOCATION, location);
1944
5ec1fd3d
MS		 1945 if (code >= HTTP_STATUS_BAD_REQUEST && con->type != CUPSD_AUTH_NEGOTIATE)
1946 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
ef416fc2 1947
d21dc0ed 1948 if (httpGetVersion(con->http) >= HTTP_VERSION_1_1 &&
5ec1fd3d 1949 httpGetKeepAlive(con->http) == HTTP_KEEPALIVE_OFF)
e200616a 1950 httpSetField(con->http, HTTP_FIELD_CONNECTION, "close");
ef416fc2 1951
5ec1fd3d 1952 if (code >= HTTP_STATUS_BAD_REQUEST)
ef416fc2 1953 {
1954 /*
1955 * Send a human-readable error message.
1956 */
1957
80ca4592 1958 char message[4096], /* Message for user */
1959 urltext[1024], /* URL redirection text */
1960 redirect[1024]; /* Redirection link */
ef416fc2 1961 const char *text; /* Status-specific text */
1962
80ca4592 1963
1964 redirect[0] = '\0';
1965
5ec1fd3d 1966 if (code == HTTP_STATUS_UNAUTHORIZED)
ef416fc2 1967 text = _cupsLangString(con->language,
1968 _("Enter your username and password or the "
1969 "root username and password to access this "
f7deaa1a 1970 "page. If you are using Kerberos authentication, "
1971 "make sure you have a valid Kerberos ticket."));
5ec1fd3d 1972 else if (code == HTTP_STATUS_UPGRADE_REQUIRED)
80ca4592 1973 {
1974 text = urltext;
1975
1976 snprintf(urltext, sizeof(urltext),
1977 _cupsLangString(con->language,
1978 _("You must access this page using the URL "
1979 "<A HREF=\"https://%s:%d%s\">"
1980 "https://%s:%d%s</A>.")),
1981 con->servername, con->serverport, con->uri,
1982 con->servername, con->serverport, con->uri);
1983
1984 snprintf(redirect, sizeof(redirect),
b86bc4cf 1985 "<META HTTP-EQUIV=\"Refresh\" "
1986 "CONTENT=\"3;URL=https://%s:%d%s\">\n",
80ca4592 1987 con->servername, con->serverport, con->uri);
1988 }
5ec1fd3d 1989 else if (code == HTTP_STATUS_CUPS_WEBIF_DISABLED)
229681c1
MS		 1990 text = _cupsLangString(con->language,
1991 _("The web interface is currently disabled. Run "
1992 "\"cupsctl WebInterface=yes\" to enable it."));
ef416fc2 1993 else
1994 text = "";
1995
1996 snprintf(message, sizeof(message),
745129be
MS		 1997 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" "
1998 "\"http://www.w3.org/TR/html4/loose.dtd\">\n"
ef416fc2 1999 "<HTML>\n"
2000 "<HEAD>\n"
2001 "\t<META HTTP-EQUIV=\"Content-Type\" "
2002 "CONTENT=\"text/html; charset=utf-8\">\n"
229681c1 2003 "\t<TITLE>%s - " CUPS_SVERSION "</TITLE>\n"
ef416fc2 2004 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2005 "HREF=\"/cups.css\">\n"
80ca4592 2006 "%s"
ef416fc2 2007 "</HEAD>\n"
2008 "<BODY>\n"
229681c1 2009 "<H1>%s</H1>\n"
ef416fc2 2010 "<P>%s</P>\n"
2011 "</BODY>\n"
2012 "</HTML>\n",
41e6c1f1
MS		 2013 _httpStatus(con->language, code), redirect,
2014 _httpStatus(con->language, code), text);
ef416fc2 2015
43dcaf3b
MS		 2016 /*
2017 * Send an error message back to the client. If the error code is a
2018 * 400 or 500 series, make sure the message contains some text, too!
2019 */
2020
2021 size_t length = strlen(message); /* Length of message */
e200616a 2022
43dcaf3b 2023 httpSetLength(con->http, length);
e200616a
MS		 2024
2025 if (!cupsdSendHeader(con, code, "text/html", auth_type))
ef416fc2 2026 return (0);
ebeb3268 2027
43dcaf3b
MS		 2028 if (httpWrite2(con->http, message, length) < 0)
2029 return (0);
2030
2031 if (httpFlushWrite(con->http) < 0)
ef416fc2 2032 return (0);
2033 }
e200616a
MS		 2034 else
2035 {
2036 httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0");
a469f8a5 2037
e200616a
MS		 2038 if (!cupsdSendHeader(con, code, NULL, auth_type))
2039 return (0);
2040 }
ef416fc2 2041
2042 return (1);
2043}
2044
2045
ef416fc2 2046/*
2047 * 'cupsdSendHeader()' - Send an HTTP request.
2048 */
2049
2050int /* O - 1 on success, 0 on failure */
f899b121 2051cupsdSendHeader(
2052 cupsd_client_t *con, /* I - Client to send to */
2053 http_status_t code, /* I - HTTP status code */
2054 char *type, /* I - MIME type of document */
2055 int auth_type) /* I - Type of authentication */
ef416fc2 2056{
5a738aea 2057 char auth_str[1024]; /* Authorization string */
f7deaa1a 2058
2059
f3211b6d
MS		 2060 cupsdLogClient(con, CUPSD_LOG_DEBUG, "cupsdSendHeader: code=%d, type=\"%s\", auth_type=%d", code, type, auth_type);
2061
4744bd90 2062 /*
2063 * Send the HTTP status header...
2064 */
2065
a73ca01e 2066 if (code == HTTP_STATUS_CUPS_WEBIF_DISABLED)
229681c1
MS		 2067 {
2068 /*
2069 * Treat our special "web interface is disabled" status as "200 OK" for web
2070 * browsers.
2071 */
2072
5ec1fd3d 2073 code = HTTP_STATUS_OK;
229681c1 2074 }
b423cd4c 2075
ef416fc2 2076 if (ServerHeader)
e200616a 2077 httpSetField(con->http, HTTP_FIELD_SERVER, ServerHeader);
5ec1fd3d
MS		 2078
2079 if (code == HTTP_STATUS_METHOD_NOT_ALLOWED)
e200616a 2080 httpSetField(con->http, HTTP_FIELD_ALLOW, "GET, HEAD, OPTIONS, POST, PUT");
ef416fc2 2081
5ec1fd3d 2082 if (code == HTTP_STATUS_UNAUTHORIZED)
ef416fc2 2083 {
5bd77a73 2084 if (auth_type == CUPSD_AUTH_NONE)
f899b121 2085 {
5bd77a73 2086 if (!con->best || con->best->type <= CUPSD_AUTH_NONE)
dcb445bc 2087 auth_type = cupsdDefaultAuthType();
f899b121 2088 else
2089 auth_type = con->best->type;
2090 }
f7deaa1a 2091
2092 auth_str[0] = '\0';
2093
e0660879 2094 if (auth_type == CUPSD_AUTH_BASIC)
f7deaa1a 2095 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
eac3a0a0 2096 else if (auth_type == CUPSD_AUTH_NEGOTIATE)
6961465f 2097 {
42dc144c 2098#ifdef AF_LOCAL
5ec1fd3d 2099 if (httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL)
6961465f
MS		 2100 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
2101 else
42dc144c 2102#endif /* AF_LOCAL */
f7deaa1a 2103 strlcpy(auth_str, "Negotiate", sizeof(auth_str));
6961465f 2104 }
f7deaa1a 2105
e07d4801 2106 if (con->best && auth_type != CUPSD_AUTH_NEGOTIATE &&
5ec1fd3d 2107 !_cups_strcasecmp(httpGetHostname(con->http, NULL, 0), "localhost"))
ef416fc2 2108 {
e07d4801
MS		 2109 /*
2110 * Add a "trc" (try root certification) parameter for local non-Kerberos
2111 * requests when the request requires system group membership - then the
2112 * client knows the root certificate can/should be used.
2113 *
7ec11630
MS		 2114 * Also, for macOS we also look for @AUTHKEY and add an "AuthRef key=foo"
2115 * method as needed...
e07d4801
MS		 2116 */
2117
10d09e33
MS		 2118 char *name, /* Current user name */
2119 *auth_key; /* Auth key buffer */
f7deaa1a 2120 size_t auth_size; /* Size of remaining buffer */
7ec11630 2121 int need_local = 1; /* Do we need to list "Local" method? */
f7deaa1a 2122
f7deaa1a 2123 auth_key = auth_str + strlen(auth_str);
7e86f2f6 2124 auth_size = sizeof(auth_str) - (size_t)(auth_key - auth_str);
f7deaa1a 2125
7ec11630
MS		 2126#if defined(SO_PEERCRED) && defined(AF_LOCAL)
2127 if (httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL)
2128 {
2129 strlcpy(auth_key, ", PeerCred", auth_size);
2130 auth_key += 10;
2131 auth_size -= 10;
2132 }
2133#endif /* SO_PEERCRED && AF_LOCAL */
2134
10d09e33
MS		 2135 for (name = (char *)cupsArrayFirst(con->best->names);
2136 name;
2137 name = (char *)cupsArrayNext(con->best->names))
f7deaa1a 2138 {
91bc88eb
MS		 2139 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "cupsdSendHeader: require \"%s\"", name);
2140
e07d4801 2141#ifdef HAVE_AUTHORIZATION_H
88f9aafc 2142 if (!_cups_strncasecmp(name, "@AUTHKEY(", 9))
f7deaa1a 2143 {
7ec11630
MS		 2144 snprintf(auth_key, auth_size, ", AuthRef key=\"%s\"", name + 9);
2145 need_local = 0;
f7deaa1a 2146 /* end parenthesis is stripped in conf.c */
2147 break;
2148 }
e07d4801
MS		 2149 else
2150#endif /* HAVE_AUTHORIZATION_H */
88f9aafc 2151 if (!_cups_strcasecmp(name, "@SYSTEM"))
f7deaa1a 2152 {
e07d4801
MS		 2153#ifdef HAVE_AUTHORIZATION_H
2154 if (SystemGroupAuthKey)
7ec11630 2155 snprintf(auth_key, auth_size, ", AuthRef key=\"%s\"", SystemGroupAuthKey);
e07d4801
MS		 2156 else
2157#else
7ec11630 2158 strlcpy(auth_key, ", Local trc=\"y\"", auth_size);
e07d4801 2159#endif /* HAVE_AUTHORIZATION_H */
7ec11630 2160 need_local = 0;
f7deaa1a 2161 break;
2162 }
2163 }
7ec11630
MS		 2164
2165 if (need_local)
91bc88eb 2166 strlcat(auth_key, ", Local", auth_size);
ef416fc2 2167 }
f7deaa1a 2168
bc44d920 2169 if (auth_str[0])
2170 {
996acce8 2171 cupsdLogClient(con, CUPSD_LOG_DEBUG, "WWW-Authenticate: %s", auth_str);
bc44d920 2172
e200616a 2173 httpSetField(con->http, HTTP_FIELD_WWW_AUTHENTICATE, auth_str);
bc44d920 2174 }
ef416fc2 2175 }
2176
e1d6a774 2177 if (con->language && strcmp(con->language->language, "C"))
e200616a 2178 httpSetField(con->http, HTTP_FIELD_CONTENT_LANGUAGE, con->language->language);
ef416fc2 2179
e1d6a774 2180 if (type)
ef416fc2 2181 {
2182 if (!strcmp(type, "text/html"))
e200616a
MS		 2183 httpSetField(con->http, HTTP_FIELD_CONTENT_TYPE, "text/html; charset=utf-8");
2184 else
2185 httpSetField(con->http, HTTP_FIELD_CONTENT_TYPE, type);
ef416fc2 2186 }
2187
e200616a 2188 return (!httpWriteResponse(con->http, code));
ef416fc2 2189}
2190
2191
2192/*
2193 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2194 */
2195
2196void
2197cupsdUpdateCGI(void)
2198{
2199 char *ptr, /* Pointer to end of line in buffer */
2200 message[1024]; /* Pointer to message text */
2201 int loglevel; /* Log level for message */
2202
2203
2204 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2205 message, sizeof(message))) != NULL)
f0ab5bff
MS		 2206 {
2207 if (loglevel == CUPSD_LOG_INFO)
2208 cupsdLogMessage(CUPSD_LOG_INFO, "%s", message);
2209
ef416fc2 2210 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2211 break;
f0ab5bff 2212 }
ef416fc2 2213
d09495fa 2214 if (ptr == NULL && !CGIStatusBuffer->bufused)
ef416fc2 2215 {
2216 /*
2217 * Fatal error on pipe - should never happen!
2218 */
2219
2220 cupsdLogMessage(CUPSD_LOG_CRIT,
2221 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2222 strerror(errno));
2223 }
2224}
2225
2226
2227/*
2228 * 'cupsdWriteClient()' - Write data to a client as needed.
2229 */
2230
f7deaa1a 2231void
ef416fc2 2232cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2233{
68b10830
MS		 2234 int bytes, /* Number of bytes written */
2235 field_col; /* Current column */
2236 char *bufptr, /* Pointer into buffer */
2237 *bufend; /* Pointer to end of buffer */
ef416fc2 2238 ipp_state_t ipp_state; /* IPP state value */
2239
2240
5ec1fd3d 2241 cupsdLogClient(con, CUPSD_LOG_DEBUG, "con->http=%p", con->http);
996acce8
MS		 2242 cupsdLogClient(con, CUPSD_LOG_DEBUG,
2243 "cupsdWriteClient "
2244 "error=%d, "
2245 "used=%d, "
2246 "state=%s, "
2247 "data_encoding=HTTP_ENCODING_%s, "
2248 "data_remaining=" CUPS_LLFMT ", "
2249 "response=%p(%s), "
2250 "pipe_pid=%d, "
2251 "file=%d",
5ec1fd3d
MS		 2252 httpError(con->http), (int)httpGetReady(con->http),
2253 httpStateString(httpGetState(con->http)),
d21dc0ed
MS		 2254 httpIsChunked(con->http) ? "CHUNKED" : "LENGTH",
2255 CUPS_LLCAST httpGetLength2(con->http),
996acce8 2256 con->response,
a73ca01e 2257 con->response ? ippStateString(ippGetState(con->request)) : "",
996acce8
MS		 2258 con->pipe_pid, con->file);
2259
5ec1fd3d
MS		 2260 if (httpGetState(con->http) != HTTP_STATE_GET_SEND &&
2261 httpGetState(con->http) != HTTP_STATE_POST_SEND)
8b116e60
MS		 2262 {
2263 /*
2264 * If we get called in the wrong state, then something went wrong with the
2265 * connection and we need to shut it down...
2266 */
2267
43dcaf3b 2268 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on unexpected HTTP write state %s.",
5ec1fd3d 2269 httpStateString(httpGetState(con->http)));
8b116e60 2270 cupsdCloseClient(con);
f7deaa1a 2271 return;
8b116e60 2272 }
f7deaa1a 2273
2274 if (con->pipe_pid)
2275 {
2276 /*
2277 * Make sure we select on the CGI output...
2278 */
2279
f899b121 2280 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
f7deaa1a 2281
996acce8 2282 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for CGI data.");
1bc82dd9 2283
f7deaa1a 2284 if (!con->file_ready)
2285 {
2286 /*
2287 * Try again later when there is CGI output available...
2288 */
2289
996acce8 2290 cupsdRemoveSelect(httpGetFd(con->http));
f7deaa1a 2291 return;
2292 }
2293
2294 con->file_ready = 0;
2295 }
ef416fc2 2296
209cc9b6
MS		 2297 bytes = (ssize_t)(sizeof(con->header) - (size_t)con->header_used);
2298
1720786e 2299 if (!con->pipe_pid && bytes > (ssize_t)httpGetRemaining(con->http))
209cc9b6
MS		 2300 {
2301 /*
2302 * Limit GET bytes to original size of file (STR #3265)...
2303 */
2304
2305 bytes = (ssize_t)httpGetRemaining(con->http);
2306 }
2307
5ec1fd3d 2308 if (con->response && con->response->state != IPP_STATE_DATA)
ef416fc2 2309 {
d21dc0ed 2310 size_t wused = httpGetPending(con->http); /* Previous write buffer use */
94436c5a
MS		 2311
2312 do
2313 {
2314 /*
2315 * Write a single attribute or the IPP message header...
2316 */
2317
996acce8 2318 ipp_state = ippWrite(con->http, con->response);
94436c5a
MS		 2319
2320 /*
2321 * If the write buffer has been flushed, stop buffering up attributes...
2322 */
2323
d21dc0ed 2324 if (httpGetPending(con->http) <= wused)
94436c5a
MS		 2325 break;
2326 }
2327 while (ipp_state != IPP_STATE_DATA && ipp_state != IPP_STATE_ERROR);
2328
996acce8
MS		 2329 cupsdLogClient(con, CUPSD_LOG_DEBUG,
2330 "Writing IPP response, ipp_state=%s, old "
d21dc0ed
MS		 2331 "wused=" CUPS_LLFMT ", new wused=" CUPS_LLFMT,
2332 ippStateString(ipp_state),
2333 CUPS_LLCAST wused, CUPS_LLCAST httpGetPending(con->http));
2334
2335 if (httpGetPending(con->http) > 0)
996acce8 2336 httpFlushWrite(con->http);
94436c5a
MS		 2337
2338 bytes = ipp_state != IPP_STATE_ERROR &&
2339 (con->file >= 0 || ipp_state != IPP_STATE_DATA);
21f36711 2340
996acce8
MS		 2341 cupsdLogClient(con, CUPSD_LOG_DEBUG,
2342 "bytes=%d, http_state=%d, data_remaining=" CUPS_LLFMT,
5ec1fd3d 2343 (int)bytes, httpGetState(con->http),
d21dc0ed 2344 CUPS_LLCAST httpGetLength2(con->http));
ef416fc2 2345 }
209cc9b6 2346 else if ((bytes = read(con->file, con->header + con->header_used, (size_t)bytes)) > 0)
ef416fc2 2347 {
68b10830
MS		 2348 con->header_used += bytes;
2349
ef416fc2 2350 if (con->pipe_pid && !con->got_fields)
2351 {
2352 /*
2353 * Inspect the data for Content-Type and other fields.
2354 */
2355
68b10830
MS		 2356 for (bufptr = con->header, bufend = con->header + con->header_used,
2357 field_col = 0;
2358 !con->got_fields && bufptr < bufend;
2359 bufptr ++)
d1c13e16 2360 {
ef416fc2 2361 if (*bufptr == '\n')
2362 {
2363 /*
2364 * Send line to client...
2365 */
2366
68b10830 2367 if (bufptr > con->header && bufptr[-1] == '\r')
ef416fc2 2368 bufptr[-1] = '\0';
2369 *bufptr++ = '\0';
2370
996acce8 2371 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Script header: %s", con->header);
ef416fc2 2372
2373 if (!con->sent_header)
2374 {
2375 /*
2376 * Handle redirection and CGI status codes...
2377 */
2378
e200616a
MS		 2379 http_field_t field; /* HTTP field */
2380 char *value = strchr(con->header, ':');
2381 /* Value of field */
2382
2383 if (value)
d6ae789d 2384 {
e200616a
MS		 2385 *value++ = '\0';
2386 while (isspace(*value & 255))
2387 value ++;
2388 }
321d8d57 2389
e200616a 2390 field = httpFieldValue(con->header);
07725fee 2391
e200616a
MS		 2392 if (field != HTTP_FIELD_UNKNOWN && value)
2393 {
2394 httpSetField(con->http, field, value);
2395
2396 if (field == HTTP_FIELD_LOCATION)
2397 {
2398 con->pipe_status = HTTP_STATUS_SEE_OTHER;
2399 con->sent_header = 2;
2400 }
2401 else
2402 con->sent_header = 1;
d6ae789d 2403 }
e200616a 2404 else if (!_cups_strcasecmp(con->header, "Status") && value)
07725fee 2405 {
e200616a 2406 con->pipe_status = (http_status_t)atoi(value);
07725fee 2407 con->sent_header = 2;
2408 }
e200616a 2409 else if (!_cups_strcasecmp(con->header, "Set-Cookie") && value)
4744bd90 2410 {
e200616a
MS		 2411 httpSetCookie(con->http, value);
2412 con->sent_header = 1;
2413 }
ef416fc2 2414 }
2415
ef416fc2 2416 /*
2417 * Update buffer...
2418 */
2419
68b10830 2420 con->header_used -= bufptr - con->header;
d1c13e16 2421
68b10830 2422 if (con->header_used > 0)
07623986 2423 memmove(con->header, bufptr, (size_t)con->header_used);
d1c13e16 2424
68b10830 2425 bufptr = con->header - 1;
ef416fc2 2426
2427 /*
2428 * See if the line was empty...
2429 */
2430
68b10830 2431 if (field_col == 0)
d09495fa 2432 {
ef416fc2 2433 con->got_fields = 1;
d09495fa 2434
e200616a
MS		 2435 if (httpGetVersion(con->http) == HTTP_VERSION_1_1 &&
2436 !httpGetField(con->http, HTTP_FIELD_CONTENT_LENGTH)[0])
2437 httpSetLength(con->http, 0);
2438
f3211b6d
MS		 2439 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Sending status %d for CGI.", con->pipe_status);
2440
6abe9327 2441 if (con->pipe_status == HTTP_STATUS_OK)
07725fee 2442 {
6abe9327
MS		 2443 if (!cupsdSendHeader(con, con->pipe_status, NULL, CUPSD_AUTH_NONE))
2444 {
2445 cupsdCloseClient(con);
2446 return;
2447 }
2448 }
2449 else
2450 {
2451 if (!cupsdSendError(con, con->pipe_status, CUPSD_AUTH_NONE))
2452 {
2453 cupsdCloseClient(con);
2454 return;
2455 }
07725fee 2456 }
d09495fa 2457 }
ef416fc2 2458 else
68b10830 2459 field_col = 0;
ef416fc2 2460 }
2461 else if (*bufptr != '\r')
68b10830 2462 field_col ++;
d1c13e16 2463 }
ef416fc2 2464
68b10830 2465 if (!con->got_fields)
47879b8b 2466 return;
ef416fc2 2467 }
2468
68b10830 2469 if (con->header_used > 0)
ef416fc2 2470 {
7e86f2f6 2471 if (httpWrite2(con->http, con->header, (size_t)con->header_used) < 0)
4744bd90 2472 {
996acce8 2473 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing for error %d (%s)",
5ec1fd3d 2474 httpError(con->http), strerror(httpError(con->http)));
4744bd90 2475 cupsdCloseClient(con);
f7deaa1a 2476 return;
4744bd90 2477 }
ef416fc2 2478
d21dc0ed 2479 if (httpIsChunked(con->http))
996acce8 2480 httpFlushWrite(con->http);
ae71f5de 2481
68b10830 2482 con->bytes += con->header_used;
ef416fc2 2483
5ec1fd3d 2484 if (httpGetState(con->http) == HTTP_STATE_WAITING)
4744bd90 2485 bytes = 0;
68b10830
MS		 2486 else
2487 bytes = con->header_used;
2488
2489 con->header_used = 0;
4744bd90 2490 }
ef416fc2 2491 }
2492
8b116e60 2493 if (bytes <= 0 ||
5ec1fd3d
MS		 2494 (httpGetState(con->http) != HTTP_STATE_GET_SEND &&
2495 httpGetState(con->http) != HTTP_STATE_POST_SEND))
ef416fc2 2496 {
38e73f87 2497 if (!con->sent_header && con->pipe_pid)
5ec1fd3d 2498 cupsdSendError(con, HTTP_STATUS_SERVER_ERROR, CUPSD_AUTH_NONE);
94da7e34
MS		 2499 else
2500 {
5ec1fd3d 2501 cupsdLogRequest(con, HTTP_STATUS_OK);
ef416fc2 2502
f3211b6d 2503 if (httpIsChunked(con->http) && (!con->pipe_pid || con->sent_header > 0))
ef416fc2 2504 {
dfc45c1b
MS		 2505 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Sending 0-length chunk.");
2506
996acce8 2507 if (httpWrite2(con->http, "", 0) < 0)
94da7e34 2508 {
996acce8 2509 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing for error %d (%s)",
5ec1fd3d 2510 httpError(con->http), strerror(httpError(con->http)));
94da7e34
MS		 2511 cupsdCloseClient(con);
2512 return;
2513 }
ef416fc2 2514 }
dfc45c1b
MS		 2515
2516 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Flushing write buffer.");
2517 httpFlushWrite(con->http);
2518 cupsdLogClient(con, CUPSD_LOG_DEBUG, "New state is %s", httpStateString(httpGetState(con->http)));
ef416fc2 2519 }
2520
996acce8 2521 cupsdAddSelect(httpGetFd(con->http), (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 2522
996acce8 2523 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for request.");
1bc82dd9 2524
ef416fc2 2525 if (con->file >= 0)
2526 {
f7deaa1a 2527 cupsdRemoveSelect(con->file);
ef416fc2 2528
2529 if (con->pipe_pid)
2530 cupsdEndProcess(con->pipe_pid, 0);
2531
ef416fc2 2532 close(con->file);
2533 con->file = -1;
2534 con->pipe_pid = 0;
2535 }
2536
2537 if (con->filename)
2538 {
ef416fc2 2539 unlink(con->filename);
2540 cupsdClearString(&con->filename);
2541 }
2542
2abf387c 2543 if (con->request)
ef416fc2 2544 {
2545 ippDelete(con->request);
2546 con->request = NULL;
2547 }
2548
2abf387c 2549 if (con->response)
ef416fc2 2550 {
2551 ippDelete(con->response);
2552 con->response = NULL;
2553 }
2554
2555 cupsdClearString(&con->command);
2556 cupsdClearString(&con->options);
b86bc4cf 2557 cupsdClearString(&con->query_string);
ef416fc2 2558
5ec1fd3d 2559 if (!httpGetKeepAlive(con->http))
ef416fc2 2560 {
996acce8
MS		 2561 cupsdLogClient(con, CUPSD_LOG_DEBUG,
2562 "Closing because Keep-Alive is disabled.");
ef416fc2 2563 cupsdCloseClient(con);
f7deaa1a 2564 return;
ef416fc2 2565 }
f11a948a
MS		 2566 else
2567 {
2568 cupsArrayRemove(ActiveClients, con);
e4e37194 2569 cupsdSetBusyState(0);
f11a948a 2570 }
ef416fc2 2571 }
f7deaa1a 2572}
ef416fc2 2573
f7deaa1a 2574
e1d6a774 2575/*
2576 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2577 */
2578
2579static int /* O - 1 if modified since */
2580check_if_modified(
2581 cupsd_client_t *con, /* I - Client connection */
2582 struct stat *filestats) /* I - File information */
2583{
5ec1fd3d 2584 const char *ptr; /* Pointer into field */
e1d6a774 2585 time_t date; /* Time/date value */
2586 off_t size; /* Size/length value */
2587
2588
2589 size = 0;
2590 date = 0;
5ec1fd3d 2591 ptr = httpGetField(con->http, HTTP_FIELD_IF_MODIFIED_SINCE);
e1d6a774 2592
2593 if (*ptr == '\0')
2594 return (1);
2595
ffe32673 2596 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 2597
2598 while (*ptr != '\0')
2599 {
2600 while (isspace(*ptr) || *ptr == ';')
2601 ptr ++;
2602
88f9aafc 2603 if (_cups_strncasecmp(ptr, "length=", 7) == 0)
e1d6a774 2604 {
2605 ptr += 7;
2606 size = strtoll(ptr, NULL, 10);
2607
2608 while (isdigit(*ptr))
2609 ptr ++;
2610 }
2611 else if (isalpha(*ptr))
2612 {
2613 date = httpGetDateTime(ptr);
2614 while (*ptr != '\0' && *ptr != ';')
2615 ptr ++;
2616 }
e53920b9 2617 else
2618 ptr ++;
e1d6a774 2619 }
2620
e1d6a774 2621 return ((size != filestats->st_size && size != 0) ||
2622 (date < filestats->st_mtime && date != 0) ||
2623 (size == 0 && date == 0));
2624}
2625
2626
3dfe78b3
MS		 2627/*
2628 * 'compare_clients()' - Compare two client connections.
2629 */
2630
2631static int /* O - Result of comparison */
2632compare_clients(cupsd_client_t *a, /* I - First client */
2633 cupsd_client_t *b, /* I - Second client */
2634 void *data) /* I - User data (not used) */
2635{
2636 (void)data;
2637
2638 if (a == b)
2639 return (0);
2640 else if (a < b)
2641 return (-1);
2642 else
2643 return (1);
2644}
2645
2646
d3d89474
MS		 2647#ifdef HAVE_SSL
2648/*
2649 * 'cupsd_start_tls()' - Start encryption on a connection.
2650 */
2651
2652static int /* O - 0 on success, -1 on error */
2653cupsd_start_tls(cupsd_client_t *con, /* I - Client connection */
2654 http_encryption_t e) /* I - Encryption mode */
2655{
d3d89474
MS		 2656 if (httpEncryption(con->http, e))
2657 {
2658 cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to encrypt connection: %s",
2659 cupsLastErrorString());
2660 return (-1);
2661 }
2662
8719e9db 2663 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Connection now encrypted.");
d3d89474
MS		 2664 return (0);
2665}
2666#endif /* HAVE_SSL */
2667
2668
ef416fc2 2669/*
2670 * 'get_file()' - Get a filename and state info.
2671 */
2672
2673static char * /* O - Real filename */
2674get_file(cupsd_client_t *con, /* I - Client connection */
2675 struct stat *filestats, /* O - File information */
2676 char *filename, /* IO - Filename buffer */
07623986 2677 size_t len) /* I - Buffer length */
ef416fc2 2678{
2679 int status; /* Status of filesystem calls */
2680 char *ptr; /* Pointer info filename */
07623986 2681 size_t plen; /* Remaining length after pointer */
d8a60ef8
MS		 2682 char language[7], /* Language subdirectory, if any */
2683 dest[1024]; /* Destination name */
112fc3c0 2684 int perm_check = 1; /* Do permissions check? */
2fa1ba3c 2685 cupsd_printer_t *p; /* Printer */
ef416fc2 2686
2687
2688 /*
f7deaa1a 2689 * Figure out the real filename...
ef416fc2 2690 */
2691
db1f069b
MS		 2692 language[0] = '\0';
2693
2fa1ba3c 2694 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 2695 {
2fa1ba3c
MS		 2696 strlcpy(dest, strchr(con->uri + 1, '/') + 1, sizeof(dest));
2697 dest[strlen(dest) - 4] = '\0'; /* Strip .ppd */
d8a60ef8 2698
2fa1ba3c 2699 if ((p = cupsdFindDest(dest)) == NULL)
d8a60ef8 2700 {
2fa1ba3c 2701 cupsdLogClient(con, CUPSD_LOG_INFO, "No destination \"%s\" found.", dest);
d8a60ef8
MS		 2702 return (NULL);
2703 }
2704
2fa1ba3c 2705 if (p->type & CUPS_PRINTER_CLASS)
d8a60ef8 2706 {
2fa1ba3c 2707 int i; /* Looping var */
d8a60ef8 2708
2fa1ba3c
MS		 2709 for (i = 0; i < p->num_printers; i ++)
2710 {
2711 if (!(p->printers[i]->type & CUPS_PRINTER_CLASS))
2712 {
2713 snprintf(filename, len, "%s/ppd/%s.ppd", ServerRoot, p->printers[i]->name);
2714 if (!access(filename, 0))
2715 {
2716 p = p->printers[i];
2717 break;
2718 }
2719 }
2720 }
2721
2722 if (i >= p->num_printers)
2723 p = NULL;
2724 }
2725 else
2726 snprintf(filename, len, "%s/ppd/%s.ppd", ServerRoot, p->name);
112fc3c0
MS		 2727
2728 perm_check = 0;
2729 }
2fa1ba3c 2730 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 2731 {
2fa1ba3c
MS		 2732 strlcpy(dest, strchr(con->uri + 1, '/') + 1, sizeof(dest));
2733 dest[strlen(dest) - 4] = '\0'; /* Strip .png */
d8a60ef8 2734
2fa1ba3c 2735 if ((p = cupsdFindDest(dest)) == NULL)
d8a60ef8 2736 {
2fa1ba3c 2737 cupsdLogClient(con, CUPSD_LOG_INFO, "No destination \"%s\" found.", dest);
d8a60ef8
MS		 2738 return (NULL);
2739 }
2740
2fa1ba3c 2741 if (p->type & CUPS_PRINTER_CLASS)
d8a60ef8 2742 {
2fa1ba3c
MS		 2743 int i; /* Looping var */
2744
2745 for (i = 0; i < p->num_printers; i ++)
2746 {
2747 if (!(p->printers[i]->type & CUPS_PRINTER_CLASS))
2748 {
2749 snprintf(filename, len, "%s/images/%s.png", CacheDir, p->printers[i]->name);
2750 if (!access(filename, 0))
2751 {
2752 p = p->printers[i];
2753 break;
2754 }
2755 }
2756 }
2757
2758 if (i >= p->num_printers)
2759 p = NULL;
d8a60ef8 2760 }
2fa1ba3c
MS		 2761 else
2762 snprintf(filename, len, "%s/images/%s.png", CacheDir, p->name);
d8a60ef8 2763
7cf5915e
MS		 2764 if (access(filename, F_OK) < 0)
2765 snprintf(filename, len, "%s/images/generic.png", DocumentRoot);
112fc3c0
MS		 2766
2767 perm_check = 0;
7cf5915e 2768 }
f7deaa1a 2769 else if (!strncmp(con->uri, "/rss/", 5) && !strchr(con->uri + 5, '/'))
2770 snprintf(filename, len, "%s/rss/%s", CacheDir, con->uri + 5);
2fa1ba3c
MS		 2771 else if (!strncmp(con->uri, "/strings/", 9) && !strcmp(con->uri + strlen(con->uri) - 8, ".strings"))
2772 {
2773 strlcpy(dest, con->uri + 9, sizeof(dest));
2774 dest[strlen(dest) - 8] = '\0';
2775
2776 if ((p = cupsdFindDest(dest)) == NULL)
2777 {
2778 cupsdLogClient(con, CUPSD_LOG_INFO, "No destination \"%s\" found.", dest);
2779 return (NULL);
2780 }
2781
2782 if (!p->strings)
2783 {
2784 cupsdLogClient(con, CUPSD_LOG_INFO, "No strings files for \"%s\".", dest);
2785 return (NULL);
2786 }
2787
2788 strlcpy(filename, p->strings, len);
2789
2790 perm_check = 0;
2791 }
112fc3c0
MS		 2792 else if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
2793 {
2794 strlcpy(filename, ConfigurationFile, len);
2795
2796 perm_check = 0;
2797 }
ef416fc2 2798 else if (!strncmp(con->uri, "/admin/log/", 11))
2799 {
2e4ff8af 2800 if (!strncmp(con->uri + 11, "access_log", 10) && AccessLog[0] == '/')
ef416fc2 2801 strlcpy(filename, AccessLog, len);
2e4ff8af 2802 else if (!strncmp(con->uri + 11, "error_log", 9) && ErrorLog[0] == '/')
ef416fc2 2803 strlcpy(filename, ErrorLog, len);
2e4ff8af 2804 else if (!strncmp(con->uri + 11, "page_log", 8) && PageLog[0] == '/')
ef416fc2 2805 strlcpy(filename, PageLog, len);
2806 else
2807 return (NULL);
112fc3c0
MS		 2808
2809 perm_check = 0;
ef416fc2 2810 }
d6ae789d 2811 else if (con->language)
db1f069b
MS		 2812 {
2813 snprintf(language, sizeof(language), "/%s", con->language->language);
2814 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
2815 }
ef416fc2 2816 else
2817 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2818
2819 if ((ptr = strchr(filename, '?')) != NULL)
2820 *ptr = '\0';
2821
2822 /*
2823 * Grab the status for this language; if there isn't a language-specific file
2824 * then fallback to the default one...
2825 */
2826
9e92ab19 2827 if ((status = lstat(filename, filestats)) != 0 && language[0] &&
7cf5915e 2828 strncmp(con->uri, "/icons/", 7) &&
d6ae789d 2829 strncmp(con->uri, "/ppd/", 5) &&
7cf5915e 2830 strncmp(con->uri, "/rss/", 5) &&
2fa1ba3c 2831 strncmp(con->uri, "/strings/", 9) &&
d6ae789d 2832 strncmp(con->uri, "/admin/conf/", 12) &&
2833 strncmp(con->uri, "/admin/log/", 11))
ef416fc2 2834 {
2835 /*
d6ae789d 2836 * Drop the country code...
ef416fc2 2837 */
2838
db1f069b
MS		 2839 language[3] = '\0';
2840 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
d6ae789d 2841
2842 if ((ptr = strchr(filename, '?')) != NULL)
2843 *ptr = '\0';
2844
36618f45 2845 if ((status = lstat(filename, filestats)) != 0)
ef416fc2 2846 {
d6ae789d 2847 /*
2848 * Drop the language prefix and try the root directory...
2849 */
2850
db1f069b 2851 language[0] = '\0';
ef416fc2 2852 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2853
2854 if ((ptr = strchr(filename, '?')) != NULL)
2855 *ptr = '\0';
2856
36618f45 2857 status = lstat(filename, filestats);
ef416fc2 2858 }
2859 }
2860
2861 /*
36618f45
MS		 2862 * If we've found a symlink, 404 the sucker to avoid disclosing information.
2863 */
2864
2865 if (!status && S_ISLNK(filestats->st_mode))
2866 {
2867 cupsdLogClient(con, CUPSD_LOG_INFO, "Symlinks such as \"%s\" are not allowed.", filename);
2868 return (NULL);
2869 }
2870
2871 /*
2872 * Similarly, if the file/directory does not have world read permissions, do
2873 * not allow access...
2874 */
2875
112fc3c0 2876 if (!status && perm_check && !(filestats->st_mode & S_IROTH))
36618f45
MS		 2877 {
2878 cupsdLogClient(con, CUPSD_LOG_INFO, "Files/directories such as \"%s\" must be world-readable.", filename);
2879 return (NULL);
2880 }
2881
2882 /*
2883 * If we've found a directory, get the index.html file instead...
ef416fc2 2884 */
2885
2886 if (!status && S_ISDIR(filestats->st_mode))
2887 {
db1f069b
MS		 2888 /*
2889 * Make sure the URI ends with a slash...
2890 */
ef416fc2 2891
db1f069b
MS		 2892 if (con->uri[strlen(con->uri) - 1] != '/')
2893 strlcat(con->uri, "/", sizeof(con->uri));
ef416fc2 2894
db1f069b
MS		 2895 /*
2896 * Find the directory index file, trying every language...
2897 */
ef416fc2 2898
db1f069b 2899 do
ef416fc2 2900 {
db1f069b
MS		 2901 if (status && language[0])
2902 {
2903 /*
2904 * Try a different language subset...
2905 */
2906
2907 if (language[3])
2908 language[0] = '\0'; /* Strip country code */
2909 else
2910 language[0] = '\0'; /* Strip language */
2911 }
2912
2913 /*
2914 * Look for the index file...
2915 */
2916
2917 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
2918
2919 if ((ptr = strchr(filename, '?')) != NULL)
2920 *ptr = '\0';
2921
2922 ptr = filename + strlen(filename);
07623986 2923 plen = len - (size_t)(ptr - filename);
db1f069b
MS		 2924
2925 strlcpy(ptr, "index.html", plen);
9e92ab19 2926 status = lstat(filename, filestats);
db1f069b
MS		 2927 }
2928 while (status && language[0]);
9e92ab19
MS		 2929
2930 /*
2931 * If we've found a symlink, 404 the sucker to avoid disclosing information.
2932 */
2933
2934 if (!status && S_ISLNK(filestats->st_mode))
2935 {
2936 cupsdLogClient(con, CUPSD_LOG_INFO, "Symlinks such as \"%s\" are not allowed.", filename);
2937 return (NULL);
2938 }
2e667a52
MS		 2939
2940 /*
2941 * Similarly, if the file/directory does not have world read permissions, do
2942 * not allow access...
2943 */
2944
112fc3c0 2945 if (!status && perm_check && !(filestats->st_mode & S_IROTH))
2e667a52
MS		 2946 {
2947 cupsdLogClient(con, CUPSD_LOG_INFO, "Files/directories such as \"%s\" must be world-readable.", filename);
2948 return (NULL);
2949 }
ef416fc2 2950 }
2951
ffe32673 2952 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 2953
ef416fc2 2954 if (status)
2955 return (NULL);
2956 else
2957 return (filename);
2958}
2959
2960
2961/*
c41769ff 2962 * 'install_cupsd_conf()' - Install a configuration file.
ef416fc2 2963 */
2964
2965static http_status_t /* O - Status */
c41769ff 2966install_cupsd_conf(cupsd_client_t *con) /* I - Connection */
ef416fc2 2967{
321d8d57 2968 char filename[1024]; /* Configuration filename */
ef416fc2 2969 cups_file_t *in, /* Input file */
2970 *out; /* Output file */
321d8d57
MS		 2971 char buffer[16384]; /* Copy buffer */
2972 ssize_t bytes; /* Number of bytes */
ef416fc2 2973
2974
2975 /*
321d8d57 2976 * Open the request file...
ef416fc2 2977 */
2978
321d8d57 2979 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
ef416fc2 2980 {
996acce8 2981 cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to open request file \"%s\": %s",
321d8d57 2982 con->filename, strerror(errno));
eb93498a 2983 goto server_error;
ef416fc2 2984 }
2985
2986 /*
321d8d57 2987 * Open the new config file...
ef416fc2 2988 */
2989
cb7f98ee 2990 if ((out = cupsdCreateConfFile(ConfigurationFile, ConfigFilePerm)) == NULL)
ef416fc2 2991 {
2992 cupsFileClose(in);
eb93498a 2993 goto server_error;
ef416fc2 2994 }
2995
996acce8 2996 cupsdLogClient(con, CUPSD_LOG_INFO, "Installing config file \"%s\"...",
cb7f98ee 2997 ConfigurationFile);
ef416fc2 2998
2999 /*
3000 * Copy from the request to the new config file...
3001 */
3002
3003 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
7e86f2f6 3004 if (cupsFileWrite(out, buffer, (size_t)bytes) < bytes)
ef416fc2 3005 {
996acce8 3006 cupsdLogClient(con, CUPSD_LOG_ERROR,
321d8d57 3007 "Unable to copy to config file \"%s\": %s",
cb7f98ee 3008 ConfigurationFile, strerror(errno));
ef416fc2 3009
3010 cupsFileClose(in);
3011 cupsFileClose(out);
321d8d57 3012
cb7f98ee
MS		 3013 snprintf(filename, sizeof(filename), "%s.N", ConfigurationFile);
3014 cupsdUnlinkOrRemoveFile(filename);
ef416fc2 3015
eb93498a 3016 goto server_error;
ef416fc2 3017 }
3018
3019 /*
3020 * Close the files...
3021 */
3022
3023 cupsFileClose(in);
ef416fc2 3024
cb7f98ee 3025 if (cupsdCloseCreatedConfFile(out, ConfigurationFile))
eb93498a 3026 goto server_error;
ef416fc2 3027
3028 /*
3029 * Remove the request file...
3030 */
3031
cb7f98ee 3032 cupsdUnlinkOrRemoveFile(con->filename);
ef416fc2 3033 cupsdClearString(&con->filename);
3034
ef416fc2 3035 /*
c41769ff 3036 * Set the NeedReload flag...
ef416fc2 3037 */
3038
c41769ff 3039 NeedReload = RELOAD_CUPSD;
ef416fc2 3040 ReloadTime = time(NULL);
3041
3042 /*
3043 * Return that the file was created successfully...
3044 */
3045
5ec1fd3d 3046 return (HTTP_STATUS_CREATED);
eb93498a
MS		 3047
3048 /*
3049 * Common exit for errors...
3050 */
3051
3052 server_error:
3053
3054 cupsdUnlinkOrRemoveFile(con->filename);
3055 cupsdClearString(&con->filename);
3056
3057 return (HTTP_STATUS_SERVER_ERROR);
ef416fc2 3058}
3059
3060
e1d6a774 3061/*
3062 * 'is_cgi()' - Is the resource a CGI script/program?
3063 */
3064
3065static int /* O - 1 = CGI, 0 = file */
3066is_cgi(cupsd_client_t *con, /* I - Client connection */
3067 const char *filename, /* I - Real filename */
3068 struct stat *filestats, /* I - File information */
3069 mime_type_t *type) /* I - MIME type */
3070{
3071 const char *options; /* Options on URL */
3072
3073
e1d6a774 3074 /*
3075 * Get the options, if any...
3076 */
3077
3078 if ((options = strchr(con->uri, '?')) != NULL)
a0f6818e
MS		 3079 {
3080 options ++;
3081 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", options);
3082 }
b86bc4cf 3083
e1d6a774 3084 /*
3085 * Check for known types...
3086 */
3087
88f9aafc 3088 if (!type || _cups_strcasecmp(type->super, "application"))
e1d6a774 3089 {
ffe32673 3090 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 3091 return (0);
3092 }
3093
88f9aafc 3094 if (!_cups_strcasecmp(type->type, "x-httpd-cgi") &&
e1d6a774 3095 (filestats->st_mode & 0111))
3096 {
3097 /*
3098 * "application/x-httpd-cgi" is a CGI script.
3099 */
3100
3101 cupsdSetString(&con->command, filename);
3102
a0f6818e
MS		 3103 if (options)
3104 cupsdSetStringf(&con->options, " %s", options);
e1d6a774 3105
ffe32673 3106 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 1.", filename, filestats, type->super, type->type);
e1d6a774 3107 return (1);
3108 }
e1d6a774 3109
ffe32673 3110 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 0.", filename, filestats, type->super, type->type);
e1d6a774 3111 return (0);
3112}
3113
3114
ef416fc2 3115/*
3116 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3117 */
3118
3119static int /* O - 0 if relative, 1 if absolute */
3120is_path_absolute(const char *path) /* I - Input path */
3121{
3122 /*
3123 * Check for a leading slash...
3124 */
3125
3126 if (path[0] != '/')
3127 return (0);
3128
12163006
MS		 3129 /*
3130 * Check for "<" or quotes in the path and reject since this is probably
3131 * someone trying to inject HTML...
3132 */
3133
3134 if (strchr(path, '<') != NULL || strchr(path, '\"') != NULL || strchr(path, '\'') != NULL)
3135 return (0);
3136
ef416fc2 3137 /*
3138 * Check for "/.." in the path...
3139 */
3140
3141 while ((path = strstr(path, "/..")) != NULL)
3142 {
3143 if (!path[3] || path[3] == '/')
3144 return (0);
3145
3146 path ++;
3147 }
3148
3149 /*
3150 * If we haven't found any relative paths, return 1 indicating an
3151 * absolute path...
3152 */
3153
3154 return (1);
3155}
3156
3157
3158/*
3159 * 'pipe_command()' - Pipe the output of a command to the remote client.
3160 */
3161
3162static int /* O - Process ID */
3163pipe_command(cupsd_client_t *con, /* I - Client connection */
3164 int infile, /* I - Standard input for command */
3165 int *outfile, /* O - Standard output for command */
3166 char *command, /* I - Command to run */
3167 char *options, /* I - Options for command */
3168 int root) /* I - Run as root? */
3169{
3170 int i; /* Looping var */
3171 int pid; /* Process ID */
b423cd4c 3172 char *commptr, /* Command string pointer */
3173 commch; /* Command string character */
ef416fc2 3174 char *uriptr; /* URI string pointer */
3175 int fds[2]; /* Pipe FDs */
3176 int argc; /* Number of arguments */
3177 int envc; /* Number of environment variables */
3178 char argbuf[10240], /* Argument buffer */
3179 *argv[100], /* Argument strings */
b94498cf 3180 *envp[MAX_ENV + 20]; /* Environment variables */
c7017ecc 3181 char auth_type[256], /* AUTH_TYPE environment variable */
b94498cf 3182 content_length[1024], /* CONTENT_LENGTH environment variable */
ef416fc2 3183 content_type[1024], /* CONTENT_TYPE environment variable */
3184 http_cookie[32768], /* HTTP_COOKIE environment variable */
f7deaa1a 3185 http_referer[1024], /* HTTP_REFERER environment variable */
ef416fc2 3186 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3187 lang[1024], /* LANG environment variable */
b423cd4c 3188 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 3189 remote_addr[1024], /* REMOTE_ADDR environment variable */
3190 remote_host[1024], /* REMOTE_HOST environment variable */
3191 remote_user[1024], /* REMOTE_USER environment variable */
b94498cf 3192 script_filename[1024], /* SCRIPT_FILENAME environment variable */
ef416fc2 3193 script_name[1024], /* SCRIPT_NAME environment variable */
3194 server_name[1024], /* SERVER_NAME environment variable */
3195 server_port[1024]; /* SERVER_PORT environment variable */
7dfedb92 3196 ipp_attribute_t *attr; /* attributes-natural-language attribute */
ef416fc2 3197
3198
3199 /*
3200 * Parse a copy of the options string, which is of the form:
3201 *
b423cd4c 3202 * argument+argument+argument
3203 * ?argument+argument+argument
3204 * param=value&param=value
3205 * ?param=value&param=value
3206 * /name?argument+argument+argument
3207 * /name?param=value&param=value
ef416fc2 3208 *
3209 * If the string contains an "=" character after the initial name,
3210 * then we treat it as a HTTP GET form request and make a copy of
3211 * the remaining string for the environment variable.
3212 *
3213 * The string is always parsed out as command-line arguments, to
3214 * be consistent with Apache...
3215 */
3216
ffe32673 3217 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 3218
b86bc4cf 3219 argv[0] = command;
ef416fc2 3220
b423cd4c 3221 if (options)
13713f49 3222 strlcpy(argbuf, options, sizeof(argbuf));
b423cd4c 3223 else
3224 argbuf[0] = '\0';
3225
3226 if (argbuf[0] == '/')
ef416fc2 3227 {
3228 /*
b423cd4c 3229 * Found some trailing path information, set PATH_INFO...
ef416fc2 3230 */
3231
b423cd4c 3232 if ((commptr = strchr(argbuf, '?')) == NULL)
3233 commptr = argbuf + strlen(argbuf);
ef416fc2 3234
b423cd4c 3235 commch = *commptr;
3236 *commptr = '\0';
3237 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
3238 *commptr = commch;
3239 }
3240 else
3241 {
3242 commptr = argbuf;
3243 path_info[0] = '\0';
b94498cf 3244
3245 if (*commptr == ' ')
3246 commptr ++;
b423cd4c 3247 }
ef416fc2 3248
cb7f98ee 3249 if (*commptr == '?' && con->operation == HTTP_STATE_GET && !con->query_string)
b423cd4c 3250 {
3251 commptr ++;
b86bc4cf 3252 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr);
b423cd4c 3253 }
ef416fc2 3254
b423cd4c 3255 argc = 1;
ef416fc2 3256
b423cd4c 3257 if (*commptr)
3258 {
3259 argv[argc ++] = commptr;
ef416fc2 3260
b423cd4c 3261 for (; *commptr && argc < 99; commptr ++)
3262 {
ef416fc2 3263 /*
b423cd4c 3264 * Break arguments whenever we see a + or space...
ef416fc2 3265 */
3266
b423cd4c 3267 if (*commptr == ' ' || *commptr == '+')
3268 {
3269 while (*commptr == ' ' || *commptr == '+')
3270 *commptr++ = '\0';
ef416fc2 3271
b423cd4c 3272 /*
3273 * If we don't have a blank string, save it as another argument...
3274 */
ef416fc2 3275
b423cd4c 3276 if (*commptr)
3277 {
3278 argv[argc] = commptr;
3279 argc ++;
3280 }
3281 else
3282 break;
3283 }
3284 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
3285 isxdigit(commptr[2] & 255))
3286 {
3287 /*
3288 * Convert the %xx notation to the individual character.
3289 */
ef416fc2 3290
b423cd4c 3291 if (commptr[1] >= '0' && commptr[1] <= '9')
7e86f2f6 3292 *commptr = (char)((commptr[1] - '0') << 4);
b423cd4c 3293 else
7e86f2f6 3294 *commptr = (char)((tolower(commptr[1]) - 'a' + 10) << 4);
ef416fc2 3295
b423cd4c 3296 if (commptr[2] >= '0' && commptr[2] <= '9')
3297 *commptr |= commptr[2] - '0';
3298 else
3299 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 3300
b423cd4c 3301 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 3302
b423cd4c 3303 /*
3304 * Check for a %00 and break if that is the case...
3305 */
ef416fc2 3306
b423cd4c 3307 if (!*commptr)
3308 break;
3309 }
ef416fc2 3310 }
3311 }
3312
3313 argv[argc] = NULL;
3314
ef416fc2 3315 /*
3316 * Setup the environment variables as needed...
3317 */
3318
b94498cf 3319 if (con->username[0])
3320 {
c7017ecc 3321 snprintf(auth_type, sizeof(auth_type), "AUTH_TYPE=%s",
996acce8 3322 httpGetField(con->http, HTTP_FIELD_AUTHORIZATION));
b94498cf 3323
3324 if ((uriptr = strchr(auth_type + 10, ' ')) != NULL)
3325 *uriptr = '\0';
3326 }
3327 else
3328 auth_type[0] = '\0';
3329
2793a478 3330 if (con->request && (attr = ippFindAttribute(con->request, "attributes-natural-language", IPP_TAG_LANGUAGE)) != NULL)
7dfedb92 3331 {
2793a478 3332 cups_lang_t *language = cupsLangGet(ippGetString(attr, 0, NULL));
7dfedb92 3333
2793a478
MS		 3334 snprintf(lang, sizeof(lang), "LANG=%s.UTF8", language->language);
3335 cupsLangFree(language);
7dfedb92
MS		 3336 }
3337 else if (con->language)
3338 snprintf(lang, sizeof(lang), "LANG=%s.UTF8", con->language->language);
ef416fc2 3339 else
5a9febac 3340 strlcpy(lang, "LANG=C", sizeof(lang));
ef416fc2 3341
5a9febac 3342 strlcpy(remote_addr, "REMOTE_ADDR=", sizeof(remote_addr));
5ec1fd3d 3343 httpAddrString(httpGetAddress(con->http), remote_addr + 12,
ef416fc2 3344 sizeof(remote_addr) - 12);
3345
3346 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
5ec1fd3d 3347 httpGetHostname(con->http, NULL, 0));
ef416fc2 3348
3349 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
3350 if ((uriptr = strchr(script_name, '?')) != NULL)
3351 *uriptr = '\0';
3352
b94498cf 3353 snprintf(script_filename, sizeof(script_filename), "SCRIPT_FILENAME=%s%s",
3354 DocumentRoot, script_name + 12);
3355
5629a813 3356 snprintf(server_port, sizeof(server_port), "SERVER_PORT=%d", con->serverport);
ef416fc2 3357
5ec1fd3d 3358 if (httpGetField(con->http, HTTP_FIELD_HOST)[0])
0268488e
MS		 3359 {
3360 char *nameptr; /* Pointer to ":port" */
3361
3362 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
5ec1fd3d 3363 httpGetField(con->http, HTTP_FIELD_HOST));
0268488e
MS		 3364 if ((nameptr = strrchr(server_name, ':')) != NULL && !strchr(nameptr, ']'))
3365 *nameptr = '\0'; /* Strip trailing ":port" */
3366 }
3367 else
3368 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3369 con->servername);
ef416fc2 3370
3371 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
3372
b94498cf 3373 if (auth_type[0])
3374 envp[envc ++] = auth_type;
3375
ef416fc2 3376 envp[envc ++] = lang;
3377 envp[envc ++] = "REDIRECT_STATUS=1";
b94498cf 3378 envp[envc ++] = "GATEWAY_INTERFACE=CGI/1.1";
ef416fc2 3379 envp[envc ++] = server_name;
3380 envp[envc ++] = server_port;
3381 envp[envc ++] = remote_addr;
3382 envp[envc ++] = remote_host;
3383 envp[envc ++] = script_name;
b94498cf 3384 envp[envc ++] = script_filename;
ef416fc2 3385
b423cd4c 3386 if (path_info[0])
3387 envp[envc ++] = path_info;
3388
ef416fc2 3389 if (con->username[0])
3390 {
3391 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
3392
3393 envp[envc ++] = remote_user;
3394 }
3395
d21dc0ed 3396 if (httpGetVersion(con->http) == HTTP_VERSION_1_1)
ef416fc2 3397 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
d21dc0ed 3398 else if (httpGetVersion(con->http) == HTTP_VERSION_1_0)
ef416fc2 3399 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
3400 else
3401 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
3402
d21dc0ed 3403 if (httpGetCookie(con->http))
ef416fc2 3404 {
3405 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
d21dc0ed 3406 httpGetCookie(con->http));
ef416fc2 3407 envp[envc ++] = http_cookie;
3408 }
3409
5ec1fd3d 3410 if (httpGetField(con->http, HTTP_FIELD_USER_AGENT)[0])
ef416fc2 3411 {
3412 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
5ec1fd3d 3413 httpGetField(con->http, HTTP_FIELD_USER_AGENT));
ef416fc2 3414 envp[envc ++] = http_user_agent;
3415 }
3416
5ec1fd3d 3417 if (httpGetField(con->http, HTTP_FIELD_REFERER)[0])
f7deaa1a 3418 {
3419 snprintf(http_referer, sizeof(http_referer), "HTTP_REFERER=%s",
5ec1fd3d 3420 httpGetField(con->http, HTTP_FIELD_REFERER));
f7deaa1a 3421 envp[envc ++] = http_referer;
3422 }
3423
cb7f98ee 3424 if (con->operation == HTTP_STATE_GET)
ef416fc2 3425 {
ef416fc2 3426 envp[envc ++] = "REQUEST_METHOD=GET";
3427
b86bc4cf 3428 if (con->query_string)
ef416fc2 3429 {
3430 /*
3431 * Add GET form variables after ?...
3432 */
3433
b86bc4cf 3434 envp[envc ++] = con->query_string;
ef416fc2 3435 }
3dfe78b3
MS		 3436 else
3437 envp[envc ++] = "QUERY_STRING=";
ef416fc2 3438 }
3439 else
3440 {
e1d6a774 3441 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
3442 CUPS_LLCAST con->bytes);
ef416fc2 3443 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
5ec1fd3d 3444 httpGetField(con->http, HTTP_FIELD_CONTENT_TYPE));
ef416fc2 3445
3446 envp[envc ++] = "REQUEST_METHOD=POST";
3447 envp[envc ++] = content_length;
3448 envp[envc ++] = content_type;
3449 }
3450
3451 /*
3452 * Tell the CGI if we are using encryption...
3453 */
3454
d21dc0ed 3455 if (httpIsEncrypted(con->http))
ef416fc2 3456 envp[envc ++] = "HTTPS=ON";
3457
3458 /*
3459 * Terminate the environment array...
3460 */
3461
3462 envp[envc] = NULL;
3463
38e73f87 3464 if (LogLevel >= CUPSD_LOG_DEBUG)
ef416fc2 3465 {
3466 for (i = 0; i < argc; i ++)
38e73f87
MS		 3467 cupsdLogMessage(CUPSD_LOG_DEBUG,
3468 "[CGI] argv[%d] = \"%s\"", i, argv[i]);
ef416fc2 3469 for (i = 0; i < envc; i ++)
38e73f87
MS		 3470 cupsdLogMessage(CUPSD_LOG_DEBUG,
3471 "[CGI] envp[%d] = \"%s\"", i, envp[i]);
ef416fc2 3472 }
3473
3474 /*
3475 * Create a pipe for the output...
3476 */
3477
3478 if (cupsdOpenPipe(fds))
3479 {
38e73f87 3480 cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to create pipe for %s - %s",
ef416fc2 3481 argv[0], strerror(errno));
3482 return (0);
3483 }
3484
3485 /*
3486 * Then execute the command...
3487 */
3488
3489 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
38e73f87 3490 -1, -1, root, DefaultProfile, NULL, &pid) < 0)
ef416fc2 3491 {
3492 /*
3493 * Error - can't fork!
3494 */
3495
38e73f87 3496 cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to start %s - %s", argv[0],
ef416fc2 3497 strerror(errno));
3498
3499 cupsdClosePipe(fds);
3500 pid = 0;
3501 }
3502 else
3503 {
3504 /*
3505 * Fork successful - return the PID...
3506 */
3507
3508 if (con->username[0])
0fa6c7fa 3509 cupsdAddCert(pid, con->username, con->type);
ef416fc2 3510
38e73f87 3511 cupsdLogMessage(CUPSD_LOG_DEBUG, "[CGI] Started %s (PID %d)", command, pid);
ef416fc2 3512
3513 *outfile = fds[0];
3514 close(fds[1]);
3515 }
3516
ef416fc2 3517 return (pid);
3518}
3519
3520
e07d4801
MS		 3521/*
3522 * 'valid_host()' - Is the Host: field valid?
3523 */
3524
3525static int /* O - 1 if valid, 0 if not */
3526valid_host(cupsd_client_t *con) /* I - Client connection */
3527{
3528 cupsd_alias_t *a; /* Current alias */
3529 cupsd_netif_t *netif; /* Current network interface */
f2534050
MS		 3530 const char *end; /* End character */
3531 char *ptr; /* Pointer into host value */
e07d4801
MS		 3532
3533
f2534050
MS		 3534 /*
3535 * Copy the Host: header for later use...
3536 */
3537
5ec1fd3d 3538 strlcpy(con->clientname, httpGetField(con->http, HTTP_FIELD_HOST),
f2534050
MS		 3539 sizeof(con->clientname));
3540 if ((ptr = strrchr(con->clientname, ':')) != NULL && !strchr(ptr, ']'))
3541 {
3542 *ptr++ = '\0';
3543 con->clientport = atoi(ptr);
3544 }
3545 else
3546 con->clientport = con->serverport;
3547
3548 /*
3549 * Then validate...
3550 */
e07d4801 3551
5ec1fd3d 3552 if (httpAddrLocalhost(httpGetAddress(con->http)))
e07d4801
MS		 3553 {
3554 /*
3555 * Only allow "localhost" or the equivalent IPv4 or IPv6 numerical
3556 * addresses when accessing CUPS via the loopback interface...
3557 */
3558
f2534050
MS		 3559 return (!_cups_strcasecmp(con->clientname, "localhost") ||
3560 !_cups_strcasecmp(con->clientname, "localhost.") ||
f2534050
MS		 3561 !strcmp(con->clientname, "127.0.0.1") ||
3562 !strcmp(con->clientname, "[::1]"));
e07d4801
MS		 3563 }
3564
37e7e6e0 3565#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
e07d4801
MS		 3566 /*
3567 * Check if the hostname is something.local (Bonjour); if so, allow it.
3568 */
3569
f2534050
MS		 3570 if ((end = strrchr(con->clientname, '.')) != NULL && end > con->clientname &&
3571 !end[1])
a29fd7dd
MS		 3572 {
3573 /*
3574 * "." on end, work back to second-to-last "."...
3575 */
f2534050
MS		 3576
3577 for (end --; end > con->clientname && *end != '.'; end --);
a29fd7dd
MS		 3578 }
3579
3580 if (end && (!_cups_strcasecmp(end, ".local") ||
f2534050 3581 !_cups_strcasecmp(end, ".local.")))
e07d4801 3582 return (1);
37e7e6e0 3583#endif /* HAVE_DNSSD || HAVE_AVAHI */
e07d4801
MS		 3584
3585 /*
3586 * Check if the hostname is an IP address...
3587 */
3588
f2534050 3589 if (isdigit(con->clientname[0] & 255) || con->clientname[0] == '[')
e07d4801
MS		 3590 {
3591 /*
3592 * Possible IPv4/IPv6 address...
3593 */
3594
e07d4801
MS		 3595 http_addrlist_t *addrlist; /* List of addresses */
3596
3597
f2534050 3598 if ((addrlist = httpAddrGetList(con->clientname, AF_UNSPEC, NULL)) != NULL)
e07d4801
MS		 3599 {
3600 /*
3601 * Good IPv4/IPv6 address...
3602 */
3603
3604 httpAddrFreeList(addrlist);
3605 return (1);
3606 }
3607 }
3608
3609 /*
3610 * Check for (alias) name matches...
3611 */
3612
3613 for (a = (cupsd_alias_t *)cupsArrayFirst(ServerAlias);
3614 a;
3615 a = (cupsd_alias_t *)cupsArrayNext(ServerAlias))
3616 {
3617 /*
3618 * "ServerAlias *" allows all host values through...
3619 */
3620
3621 if (!strcmp(a->name, "*"))
3622 return (1);
3623
f2534050 3624 if (!_cups_strncasecmp(con->clientname, a->name, a->namelen))
e07d4801
MS		 3625 {
3626 /*
f2534050 3627 * Prefix matches; check the character at the end - it must be "." or nul.
e07d4801
MS		 3628 */
3629
f2534050 3630 end = con->clientname + a->namelen;
e07d4801 3631
f2534050 3632 if (!*end || (*end == '.' && !end[1]))
e07d4801
MS		 3633 return (1);
3634 }
3635 }
3636
37e7e6e0 3637#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
e07d4801
MS		 3638 for (a = (cupsd_alias_t *)cupsArrayFirst(DNSSDAlias);
3639 a;
3640 a = (cupsd_alias_t *)cupsArrayNext(DNSSDAlias))
3641 {
3642 /*
3643 * "ServerAlias *" allows all host values through...
3644 */
3645
3646 if (!strcmp(a->name, "*"))
3647 return (1);
3648
f2534050 3649 if (!_cups_strncasecmp(con->clientname, a->name, a->namelen))
e07d4801
MS		 3650 {
3651 /*
f2534050 3652 * Prefix matches; check the character at the end - it must be "." or nul.
e07d4801
MS		 3653 */
3654
f2534050 3655 end = con->clientname + a->namelen;
e07d4801 3656
f2534050 3657 if (!*end || (*end == '.' && !end[1]))
e07d4801
MS		 3658 return (1);
3659 }
3660 }
37e7e6e0 3661#endif /* HAVE_DNSSD || HAVE_AVAHI */
e07d4801
MS		 3662
3663 /*
3664 * Check for interface hostname matches...
3665 */
3666
3667 for (netif = (cupsd_netif_t *)cupsArrayFirst(NetIFList);
3668 netif;
3669 netif = (cupsd_netif_t *)cupsArrayNext(NetIFList))
3670 {
f2534050 3671 if (!_cups_strncasecmp(con->clientname, netif->hostname, netif->hostlen))
e07d4801
MS		 3672 {
3673 /*
f2534050 3674 * Prefix matches; check the character at the end - it must be "." or nul.
e07d4801
MS		 3675 */
3676
f2534050 3677 end = con->clientname + netif->hostlen;
e07d4801 3678
f2534050 3679 if (!*end || (*end == '.' && !end[1]))
e07d4801
MS		 3680 return (1);
3681 }
3682 }
3683
3684 return (0);
3685}
3686
3687
ef416fc2 3688/*
a74454a7 3689 * 'write_file()' - Send a file via HTTP.
e1d6a774 3690 */
3691
3692static int /* O - 0 on failure, 1 on success */
a74454a7 3693write_file(cupsd_client_t *con, /* I - Client connection */
3694 http_status_t code, /* I - HTTP status */
3695 char *filename, /* I - Filename */
3696 char *type, /* I - File type */
3697 struct stat *filestats) /* O - File information */
e1d6a774 3698{
3699 con->file = open(filename, O_RDONLY);
3700
ffe32673 3701 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 3702
3703 if (con->file < 0)
3704 return (0);
3705
3706 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
3707
dfc45c1b
MS		 3708 con->pipe_pid = 0;
3709 con->sent_header = 1;
e1d6a774 3710
a73ca01e
MS		 3711 httpClearFields(con->http);
3712
7e86f2f6 3713 httpSetLength(con->http, (size_t)filestats->st_size);
e1d6a774 3714
e200616a
MS		 3715 httpSetField(con->http, HTTP_FIELD_LAST_MODIFIED,
3716 httpGetDateString(filestats->st_mtime));
e1d6a774 3717
e200616a 3718 if (!cupsdSendHeader(con, code, type, CUPSD_AUTH_NONE))
07725fee 3719 return (0);
d09495fa 3720
43dcaf3b 3721 cupsdAddSelect(httpGetFd(con->http), NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
e1d6a774 3722
996acce8 3723 cupsdLogClient(con, CUPSD_LOG_DEBUG, "Sending file.");
1bc82dd9 3724
e1d6a774 3725 return (1);
3726}
3727
3728
3729/*
f899b121 3730 * 'write_pipe()' - Flag that data is available on the CGI pipe.
3731 */
3732
3733static void
3734write_pipe(cupsd_client_t *con) /* I - Client connection */
3735{
ffe32673 3736 cupsdLogClient(con, CUPSD_LOG_DEBUG2, "write_pipe: CGI output on fd %d.", con->file);
f899b121 3737
3738 con->file_ready = 1;
3739
3740 cupsdRemoveSelect(con->file);
996acce8 3741 cupsdAddSelect(httpGetFd(con->http), NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
1bc82dd9 3742
996acce8 3743 cupsdLogClient(con, CUPSD_LOG_DEBUG, "CGI data ready to be sent.");
f899b121 3744}
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