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[thirdparty/cups.git] / scheduler / client.c
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ef416fc2 1/*
f2d18633 2 * "$Id$"
ef416fc2 3 *
10d09e33 4 * Client routines for the CUPS scheduler.
ef416fc2 5 *
cb7f98ee 6 * Copyright 2007-2013 by Apple Inc.
f7deaa1a 7 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
8 *
9 * This file contains Kerberos support code, copyright 2006 by
10 * Jelmer Vernooij.
ef416fc2 11 *
12 * These coded instructions, statements, and computer programs are the
bc44d920 13 * property of Apple Inc. and are protected by Federal copyright
14 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
15 * which should have been included with this file. If this file is
16 * file is missing or damaged, see the license at "http://www.cups.org/".
ef416fc2 17 *
18 * Contents:
19 *
82cc1f9a
MS		 20 * cupsdAcceptClient() - Accept a new client.
21 * cupsdCloseAllClients() - Close all remote clients immediately.
22 * cupsdCloseClient() - Close a remote client.
23 * cupsdFlushHeader() - Flush the header fields to the client.
24 * cupsdReadClient() - Read data from a client.
25 * cupsdSendCommand() - Send output from a command via HTTP.
26 * cupsdSendError() - Send an error message via HTTP.
27 * cupsdSendHeader() - Send an HTTP request.
28 * cupsdUpdateCGI() - Read status messages from CGI scripts and
29 * programs.
30 * cupsdWriteClient() - Write data to a client as needed.
31 * check_if_modified() - Decode an "If-Modified-Since" line.
32 * compare_clients() - Compare two client connections.
33 * data_ready() - Check whether data is available from a client.
34 * get_file() - Get a filename and state info.
c41769ff 35 * install_cupsd_conf() - Install a configuration file.
82cc1f9a
MS		 36 * is_cgi() - Is the resource a CGI script/program?
37 * is_path_absolute() - Is a path absolute and free of relative elements
38 * (i.e. "..").
39 * pipe_command() - Pipe the output of a command to the remote
40 * client.
41 * valid_host() - Is the Host: field valid?
42 * write_file() - Send a file via HTTP.
43 * write_pipe() - Flag that data is available on the CGI pipe.
ef416fc2 44 */
45
46/*
47 * Include necessary headers...
48 */
49
ef416fc2 50#include "cupsd.h"
51
cb7f98ee
MS		 52#ifdef __APPLE__
53# include <libproc.h>
54#endif /* __APPLE__ */
749b1e90
MS		 55#ifdef HAVE_TCPD_H
56# include <tcpd.h>
57#endif /* HAVE_TCPD_H */
58
ef416fc2 59
85dda01c
MS		 60/*
61 * Local globals...
62 */
63
64static const char * const http_states[] =
65 { /* HTTP state strings */
a469f8a5
MS		 66 "HTTP_STATE_ERROR",
67 "HTTP_STATE_WAITING",
68 "HTTP_STATE_OPTIONS",
69 "HTTP_STATE_GET",
70 "HTTP_STATE_GET_SEND",
71 "HTTP_STATE_HEAD",
72 "HTTP_STATE_POST",
73 "HTTP_STATE_POST_RECV",
74 "HTTP_STATE_POST_SEND",
75 "HTTP_STATE_PUT",
76 "HTTP_STATE_PUT_RECV",
77 "HTTP_STATE_DELETE",
78 "HTTP_STATE_TRACE",
79 "HTTP_STATE_CONNECT",
80 "HTTP_STATE_STATUS",
81 "HTTP_STATE_UNKNOWN_METHOD",
82 "HTTP_STATE_UNKNOWN_VERSION"
85dda01c
MS		 83 };
84static const char * const ipp_states[] =
85 { /* IPP state strings */
86 "IPP_IDLE",
87 "IPP_HEADER",
88 "IPP_ATTRIBUTE",
89 "IPP_DATA"
90 };
91
92
ef416fc2 93/*
94 * Local functions...
95 */
96
97static int check_if_modified(cupsd_client_t *con,
98 struct stat *filestats);
3dfe78b3
MS		 99static int compare_clients(cupsd_client_t *a, cupsd_client_t *b,
100 void *data);
ee571f26 101static int data_ready(cupsd_client_t *con);
f7deaa1a 102static char *get_file(cupsd_client_t *con, struct stat *filestats,
ef416fc2 103 char *filename, int len);
c41769ff 104static http_status_t install_cupsd_conf(cupsd_client_t *con);
e1d6a774 105static int is_cgi(cupsd_client_t *con, const char *filename,
106 struct stat *filestats, mime_type_t *type);
ef416fc2 107static int is_path_absolute(const char *path);
108static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
109 char *command, char *options, int root);
e07d4801 110static int valid_host(cupsd_client_t *con);
a74454a7 111static int write_file(cupsd_client_t *con, http_status_t code,
112 char *filename, char *type,
113 struct stat *filestats);
f899b121 114static void write_pipe(cupsd_client_t *con);
ef416fc2 115
116
117/*
118 * 'cupsdAcceptClient()' - Accept a new client.
119 */
120
121void
122cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
123{
ef416fc2 124 int count; /* Count of connections on a host */
125 int val; /* Parameter value */
bd7854cb 126 cupsd_client_t *con, /* New client pointer */
127 *tempcon; /* Temporary client pointer */
ef416fc2 128 http_addrlist_t *addrlist, /* List of adddresses for host */
129 *addr; /* Current address */
130 socklen_t addrlen; /* Length of address */
131 char *hostname; /* Hostname for address */
132 http_addr_t temp; /* Temporary address variable */
133 static time_t last_dos = 0; /* Time of last DoS attack */
749b1e90
MS		 134#ifdef HAVE_TCPD_H
135 struct request_info wrap_req; /* TCP wrappers request information */
136#endif /* HAVE_TCPD_H */
ef416fc2 137
138
139 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1 140 "cupsdAcceptClient(lis=%p(%d)) Clients=%d",
bd7854cb 141 lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 142
143 /*
144 * Make sure we don't have a full set of clients already...
145 */
146
bd7854cb 147 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 148 return;
149
150 /*
151 * Get a pointer to the next available client...
152 */
153
bd7854cb 154 if (!Clients)
155 Clients = cupsArrayNew(NULL, NULL);
156
157 if (!Clients)
91c84a35
MS		 158 {
159 cupsdLogMessage(CUPSD_LOG_ERROR,
3dfe78b3
MS		 160 "Unable to allocate memory for clients array!");
161 cupsdPauseListening();
162 return;
163 }
164
165 if (!ActiveClients)
166 ActiveClients = cupsArrayNew((cups_array_func_t)compare_clients, NULL);
167
168 if (!ActiveClients)
169 {
170 cupsdLogMessage(CUPSD_LOG_ERROR,
171 "Unable to allocate memory for active clients array!");
91c84a35 172 cupsdPauseListening();
bd7854cb 173 return;
91c84a35 174 }
bd7854cb 175
91c84a35
MS		 176 if ((con = calloc(1, sizeof(cupsd_client_t))) == NULL)
177 {
178 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to allocate memory for client!");
179 cupsdPauseListening();
180 return;
181 }
ef416fc2 182
85dda01c 183 con->file = -1;
dcb445bc 184 con->http.activity = time(NULL);
85dda01c
MS		 185 con->http.hostaddr = &(con->clientaddr);
186 con->http.wait_value = 10000;
c41769ff 187 con->http.mode = _HTTP_MODE_SERVER;
ef416fc2 188
189 /*
190 * Accept the client and get the remote address...
191 */
192
193 addrlen = sizeof(http_addr_t);
194
195 if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
196 &addrlen)) < 0)
197 {
76cd9e37
MS		 198 if (errno == ENFILE || errno == EMFILE)
199 cupsdPauseListening();
200
ef416fc2 201 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
202 strerror(errno));
bd7854cb 203 free(con);
76cd9e37 204
ef416fc2 205 return;
206 }
207
22c9029b
MS		 208 /*
209 * Save the connected port number...
210 */
ef416fc2 211
a469f8a5 212 _httpAddrSetPort(con->http.hostaddr, httpAddrPort(&(lis->address)));
ef416fc2 213
22c9029b
MS		 214#ifdef AF_INET6
215 /*
216 * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
217 * can more easily use...
218 */
ef416fc2 219
22c9029b
MS		 220 if (lis->address.addr.sa_family == AF_INET6 &&
221 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
222 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
223 ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
224 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
ef416fc2 225#endif /* AF_INET6 */
ef416fc2 226
227 /*
228 * Check the number of clients on the same address...
229 */
230
bd7854cb 231 for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
232 tempcon;
233 tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
234 if (httpAddrEqual(tempcon->http.hostaddr, con->http.hostaddr))
ef416fc2 235 {
236 count ++;
237 if (count >= MaxClientsPerHost)
238 break;
239 }
240
241 if (count >= MaxClientsPerHost)
242 {
243 if ((time(NULL) - last_dos) >= 60)
244 {
245 last_dos = time(NULL);
246 cupsdLogMessage(CUPSD_LOG_WARN,
bd7854cb 247 "Possible DoS attack - more than %d clients connecting "
248 "from %s!",
749b1e90
MS		 249 MaxClientsPerHost,
250 httpAddrString(con->http.hostaddr, con->http.hostname,
251 sizeof(con->http.hostname)));
ef416fc2 252 }
253
254#ifdef WIN32
255 closesocket(con->http.fd);
256#else
257 close(con->http.fd);
258#endif /* WIN32 */
259
bd7854cb 260 free(con);
ef416fc2 261 return;
262 }
263
264 /*
265 * Get the hostname or format the IP address as needed...
266 */
267
268 if (httpAddrLocalhost(con->http.hostaddr))
269 {
270 /*
271 * Map accesses from the loopback interface to "localhost"...
272 */
273
274 strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
275 hostname = con->http.hostname;
276 }
277 else
278 {
279 /*
280 * Map accesses from the same host to the server name.
281 */
282
d1c13e16 283 if (HostNameLookups)
ef416fc2 284 hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
285 sizeof(con->http.hostname));
286 else
287 {
288 hostname = NULL;
289 httpAddrString(con->http.hostaddr, con->http.hostname,
290 sizeof(con->http.hostname));
291 }
292 }
293
294 if (hostname == NULL && HostNameLookups == 2)
295 {
296 /*
297 * Can't have an unresolved IP address with double-lookups enabled...
298 */
299
ef416fc2 300#ifdef WIN32
301 closesocket(con->http.fd);
302#else
303 close(con->http.fd);
304#endif /* WIN32 */
305
306 cupsdLogMessage(CUPSD_LOG_WARN,
307 "Name lookup failed - connection from %s closed!",
308 con->http.hostname);
bd7854cb 309
310 free(con);
ef416fc2 311 return;
312 }
313
314 if (HostNameLookups == 2)
315 {
316 /*
317 * Do double lookups as needed...
318 */
319
749b1e90
MS		 320 if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL))
321 != NULL)
ef416fc2 322 {
323 /*
324 * See if the hostname maps to the same IP address...
325 */
326
327 for (addr = addrlist; addr; addr = addr->next)
328 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
329 break;
330 }
331 else
332 addr = NULL;
333
334 httpAddrFreeList(addrlist);
335
336 if (!addr)
337 {
338 /*
339 * Can't have a hostname that doesn't resolve to the same IP address
340 * with double-lookups enabled...
341 */
342
ef416fc2 343#ifdef WIN32
344 closesocket(con->http.fd);
345#else
346 close(con->http.fd);
347#endif /* WIN32 */
348
349 cupsdLogMessage(CUPSD_LOG_WARN,
350 "IP lookup failed - connection from %s closed!",
351 con->http.hostname);
bd7854cb 352 free(con);
ef416fc2 353 return;
354 }
355 }
356
749b1e90
MS		 357#ifdef HAVE_TCPD_H
358 /*
359 * See if the connection is denied by TCP wrappers...
360 */
361
362 request_init(&wrap_req, RQ_DAEMON, "cupsd", RQ_FILE, con->http.fd, NULL);
363 fromhost(&wrap_req);
364
365 if (!hosts_access(&wrap_req))
366 {
749b1e90
MS		 367#ifdef WIN32
368 closesocket(con->http.fd);
369#else
370 close(con->http.fd);
371#endif /* WIN32 */
372
373 cupsdLogMessage(CUPSD_LOG_WARN,
374 "Connection from %s refused by /etc/hosts.allow and "
375 "/etc/hosts.deny rules.", con->http.hostname);
376 free(con);
377 return;
378 }
379#endif /* HAVE_TCPD_H */
380
ef416fc2 381#ifdef AF_LOCAL
382 if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
cb7f98ee
MS		 383 {
384# ifdef __APPLE__
385 socklen_t peersize; /* Size of peer credentials */
386 pid_t peerpid; /* Peer process ID */
387 char name[256]; /* Name of process */
388
389 peersize = sizeof(peerpid);
390 if (!getsockopt(con->http.fd, SOL_LOCAL, LOCAL_PEERPID, &peerpid,
391 &peersize))
392 {
393 if (!proc_name(peerpid, name, sizeof(name)))
394 cupsdLogMessage(CUPSD_LOG_DEBUG,
395 "[Client %d] Accepted from %s (Domain ???[%d])",
396 con->http.fd, con->http.hostname, (int)peerpid);
397 else
398 cupsdLogMessage(CUPSD_LOG_DEBUG,
399 "[Client %d] Accepted from %s (Domain %s[%d])",
400 con->http.fd, con->http.hostname, name, (int)peerpid);
401 }
402 else
403# endif /* __APPLE__ */
404
85dda01c 405 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Accepted from %s (Domain)",
ef416fc2 406 con->http.fd, con->http.hostname);
cb7f98ee 407 }
ef416fc2 408 else
409#endif /* AF_LOCAL */
85dda01c 410 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Accepted from %s:%d (IPv%d)",
ef416fc2 411 con->http.fd, con->http.hostname,
a469f8a5 412 httpAddrPort(con->http.hostaddr),
22c9029b 413 _httpAddrFamily(con->http.hostaddr) == AF_INET ? 4 : 6);
ef416fc2 414
415 /*
416 * Get the local address the client connected to...
417 */
418
419 addrlen = sizeof(temp);
420 if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
421 {
422 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
423 strerror(errno));
424
5a9febac 425 strlcpy(con->servername, "localhost", sizeof(con->servername));
ef416fc2 426 con->serverport = LocalPort;
427 }
22c9029b
MS		 428#ifdef AF_LOCAL
429 else if (_httpAddrFamily(&temp) == AF_LOCAL)
430 {
5a9febac 431 strlcpy(con->servername, "localhost", sizeof(con->servername));
22c9029b
MS		 432 con->serverport = LocalPort;
433 }
434#endif /* AF_LOCAL */
ef416fc2 435 else
436 {
22c9029b
MS		 437 if (httpAddrLocalhost(&temp))
438 strlcpy(con->servername, "localhost", sizeof(con->servername));
6961465f 439 else if (HostNameLookups)
22c9029b 440 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
ef416fc2 441 else
22c9029b 442 httpAddrString(&temp, con->servername, sizeof(con->servername));
b19ccc9e 443
a469f8a5 444 con->serverport = httpAddrPort(&(lis->address));
ef416fc2 445 }
446
dcb445bc
MS		 447 /*
448 * Add the connection to the array of active clients...
449 */
450
bd7854cb 451 cupsArrayAdd(Clients, con);
452
ef416fc2 453 /*
b9faaae1
MS		 454 * Using TCP_NODELAY improves responsiveness, especially on systems with a slow
455 * loopback interface. Since we write large buffers when sending print files
456 * and requests there shouldn't be any performance penalty for this...
ef416fc2 457 */
458
459 val = 1;
f7deaa1a 460 setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
ef416fc2 461
462 /*
463 * Close this file on all execs...
464 */
465
466 fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
467
468 /*
b9faaae1 469 * Add the socket to the server select.
ef416fc2 470 */
471
f7deaa1a 472 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 473
1bc82dd9
MS		 474 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Waiting for request.",
475 con->http.fd);
476
ef416fc2 477 /*
478 * Temporarily suspend accept()'s until we lose a client...
479 */
480
bd7854cb 481 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 482 cupsdPauseListening();
483
484#ifdef HAVE_SSL
485 /*
486 * See if we are connecting on a secure port...
487 */
488
489 if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
490 {
491 /*
492 * https connection; go secure...
493 */
494
495 con->http.encryption = HTTP_ENCRYPT_ALWAYS;
496
82cc1f9a 497 if (!cupsdStartTLS(con))
411affcf 498 cupsdCloseClient(con);
ef416fc2 499 }
500 else
501 con->auto_ssl = 1;
502#endif /* HAVE_SSL */
503}
504
505
506/*
507 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
508 */
509
510void
511cupsdCloseAllClients(void)
512{
bd7854cb 513 cupsd_client_t *con; /* Current client */
514
515
b9faaae1
MS		 516 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdCloseAllClients() Clients=%d",
517 cupsArrayCount(Clients));
518
bd7854cb 519 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
520 con;
521 con = (cupsd_client_t *)cupsArrayNext(Clients))
49d87452
MS		 522 if (cupsdCloseClient(con))
523 cupsdCloseClient(con);
ef416fc2 524}
525
526
527/*
528 * 'cupsdCloseClient()' - Close a remote client.
529 */
530
531int /* O - 1 if partial close, 0 if fully closed */
532cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
533{
534 int partial; /* Do partial close for SSL? */
535#ifdef HAVE_LIBSSL
ef416fc2 536#elif defined(HAVE_GNUTLS)
89d46774 537# elif defined(HAVE_CDSASSL)
ef416fc2 538#endif /* HAVE_LIBSSL */
539
540
85dda01c
MS		 541 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Closing connection.",
542 con->http.fd);
ef416fc2 543
544 /*
545 * Flush pending writes before closing...
546 */
547
548 httpFlushWrite(HTTP(con));
549
550 partial = 0;
551
552#ifdef HAVE_SSL
553 /*
554 * Shutdown encryption as needed...
555 */
556
557 if (con->http.tls)
558 {
559 partial = 1;
560
82cc1f9a 561 cupsdEndTLS(con);
ef416fc2 562 }
563#endif /* HAVE_SSL */
564
565 if (con->pipe_pid != 0)
566 {
567 /*
568 * Stop any CGI process...
569 */
570
ef416fc2 571 cupsdEndProcess(con->pipe_pid, 1);
572 con->pipe_pid = 0;
573 }
574
575 if (con->file >= 0)
576 {
f7deaa1a 577 cupsdRemoveSelect(con->file);
ef416fc2 578
ef416fc2 579 close(con->file);
580 con->file = -1;
581 }
582
583 /*
584 * Close the socket and clear the file from the input set for select()...
585 */
586
3dfe78b3 587 if (con->http.fd >= 0)
ef416fc2 588 {
3dfe78b3
MS		 589 cupsArrayRemove(ActiveClients, con);
590 cupsdSetBusyState();
591
ef416fc2 592 if (partial)
593 {
594 /*
595 * Only do a partial close so that the encrypted client gets everything.
596 */
597
ef416fc2 598 shutdown(con->http.fd, 0);
f7deaa1a 599 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
1bc82dd9
MS		 600
601 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Waiting for socket close.",
602 con->http.fd);
ef416fc2 603 }
604 else
605 {
606 /*
607 * Shut the socket down fully...
608 */
609
f7deaa1a 610 cupsdRemoveSelect(con->http.fd);
ef416fc2 611 close(con->http.fd);
ef416fc2 612 con->http.fd = -1;
613 }
614 }
615
616 if (!partial)
617 {
618 /*
619 * Free memory...
620 */
621
622 if (con->http.input_set)
623 free(con->http.input_set);
624
625 httpClearCookie(HTTP(con));
9f5eb9be 626 httpClearFields(HTTP(con));
ef416fc2 627
628 cupsdClearString(&con->filename);
629 cupsdClearString(&con->command);
630 cupsdClearString(&con->options);
b86bc4cf 631 cupsdClearString(&con->query_string);
ef416fc2 632
633 if (con->request)
634 {
635 ippDelete(con->request);
636 con->request = NULL;
637 }
638
639 if (con->response)
640 {
641 ippDelete(con->response);
642 con->response = NULL;
643 }
644
645 if (con->language)
646 {
647 cupsLangFree(con->language);
648 con->language = NULL;
649 }
650
f7deaa1a 651#ifdef HAVE_AUTHORIZATION_H
652 if (con->authref)
653 {
654 AuthorizationFree(con->authref, kAuthorizationFlagDefaults);
655 con->authref = NULL;
656 }
657#endif /* HAVE_AUTHORIZATION_H */
658
ef416fc2 659 /*
660 * Re-enable new client connections if we are going back under the
661 * limit...
662 */
663
bd7854cb 664 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 665 cupsdResumeListening();
666
667 /*
668 * Compact the list of clients as necessary...
669 */
670
bd7854cb 671 cupsArrayRemove(Clients, con);
ef416fc2 672
bd7854cb 673 free(con);
ef416fc2 674 }
675
676 return (partial);
677}
678
679
d09495fa 680/*
681 * 'cupsdFlushHeader()' - Flush the header fields to the client.
682 */
683
07725fee 684int /* I - Bytes written or -1 on error */
d09495fa 685cupsdFlushHeader(cupsd_client_t *con) /* I - Client to flush to */
686{
07725fee 687 int bytes = httpFlushWrite(HTTP(con));
d09495fa 688
cb7f98ee 689 con->http.data_encoding = HTTP_ENCODING_LENGTH;
07725fee 690
691 return (bytes);
d09495fa 692}
693
694
ef416fc2 695/*
696 * 'cupsdReadClient()' - Read data from a client.
697 */
698
f7deaa1a 699void
ef416fc2 700cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
701{
702 char line[32768], /* Line from client... */
703 operation[64], /* Operation code from socket */
704 version[64], /* HTTP version number string */
705 locale[64], /* Locale */
706 *ptr; /* Pointer into strings */
707 int major, minor; /* HTTP version numbers */
708 http_status_t status; /* Transfer status */
709 ipp_state_t ipp_state; /* State of IPP transfer */
710 int bytes; /* Number of bytes to POST */
711 char *filename; /* Name of file for GET/HEAD */
712 char buf[1024]; /* Buffer for real filename */
713 struct stat filestats; /* File information */
714 mime_type_t *type; /* MIME type of file */
715 cupsd_printer_t *p; /* Printer */
716 static unsigned request_id = 0; /* Request ID for temp files */
717
718
719 status = HTTP_CONTINUE;
720
721 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 722 "[Client %d] cupsdReadClient "
723 "error=%d, "
724 "used=%d, "
725 "state=%s, "
a469f8a5 726 "data_encoding=HTTP_ENCODING_%s, "
85dda01c
MS		 727 "data_remaining=" CUPS_LLFMT ", "
728 "request=%p(%s), "
729 "file=%d",
730 con->http.fd, con->http.error, con->http.used,
a469f8a5 731 http_states[con->http.state + 1],
cb7f98ee 732 con->http.data_encoding == HTTP_ENCODING_CHUNKED ?
b9faaae1 733 "CHUNKED" : "LENGTH",
85dda01c
MS		 734 CUPS_LLCAST con->http.data_remaining,
735 con->request,
736 con->request ? ipp_states[con->request->state] : "",
737 con->file);
ef416fc2 738
ef416fc2 739#ifdef HAVE_SSL
740 if (con->auto_ssl)
741 {
742 /*
743 * Automatically check for a SSL/TLS handshake...
744 */
745
746 con->auto_ssl = 0;
747
748 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
749 (!buf[0] || !strchr("DGHOPT", buf[0])))
750 {
751 /*
752 * Encrypt this connection...
753 */
754
755 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 756 "[Client %d] Saw first byte %02X, auto-negotiating "
757 "SSL/TLS session.", con->http.fd, buf[0] & 255);
ef416fc2 758
82cc1f9a 759 if (!cupsdStartTLS(con))
f7deaa1a 760 cupsdCloseClient(con);
411affcf 761
f7deaa1a 762 return;
ef416fc2 763 }
764 }
765#endif /* HAVE_SSL */
766
767 switch (con->http.state)
768 {
cb7f98ee 769 case HTTP_STATE_WAITING :
ef416fc2 770 /*
771 * See if we've received a request line...
772 */
773
774 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
775 {
f11a948a
MS		 776 if (con->http.error && con->http.error != EPIPE)
777 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 778 "[Client %d] HTTP_STATE_WAITING Closing for error %d "
f11a948a
MS		 779 "(%s)", con->http.fd, con->http.error,
780 strerror(con->http.error));
781 else
782 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 783 "[Client %d] HTTP_STATE_WAITING Closing on EOF",
f11a948a
MS		 784 con->http.fd);
785
f7deaa1a 786 cupsdCloseClient(con);
787 return;
ef416fc2 788 }
789
790 /*
791 * Ignore blank request lines...
792 */
793
794 if (line[0] == '\0')
795 break;
796
797 /*
798 * Clear other state variables...
799 */
800
801 httpClearFields(HTTP(con));
802
803 con->http.activity = time(NULL);
804 con->http.version = HTTP_1_0;
805 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
cb7f98ee 806 con->http.data_encoding = HTTP_ENCODING_LENGTH;
ef416fc2 807 con->http.data_remaining = 0;
808 con->http._data_remaining = 0;
cb7f98ee 809 con->operation = HTTP_STATE_WAITING;
ef416fc2 810 con->bytes = 0;
811 con->file = -1;
812 con->file_ready = 0;
813 con->pipe_pid = 0;
814 con->username[0] = '\0';
815 con->password[0] = '\0';
816 con->uri[0] = '\0';
817
818 cupsdClearString(&con->command);
819 cupsdClearString(&con->options);
b86bc4cf 820 cupsdClearString(&con->query_string);
ef416fc2 821
2abf387c 822 if (con->request)
823 {
824 ippDelete(con->request);
825 con->request = NULL;
826 }
827
828 if (con->response)
829 {
830 ippDelete(con->response);
831 con->response = NULL;
832 }
833
834 if (con->language)
ef416fc2 835 {
836 cupsLangFree(con->language);
837 con->language = NULL;
838 }
839
09a101d6 840#ifdef HAVE_GSSAPI
97c9a8d7 841 con->have_gss = 0;
07ed0e9a 842 con->gss_uid = 0;
09a101d6 843#endif /* HAVE_GSSAPI */
844
ef416fc2 845 /*
846 * Grab the request line...
847 */
848
849 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
850 {
851 case 1 :
c934a06c
MS		 852 if (line[0])
853 {
854 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 855 "[Client %d] Bad request line \"%s\" from %s.",
856 con->http.fd,
c8fef167 857 _httpEncodeURI(buf, line, sizeof(buf)),
c934a06c
MS		 858 con->http.hostname);
859 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
860 cupsdCloseClient(con);
861 }
f7deaa1a 862 return;
ef416fc2 863 case 2 :
864 con->http.version = HTTP_0_9;
865 break;
866 case 3 :
867 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
868 {
869 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 870 "[Client %d] Bad request line \"%s\" from %s.",
871 con->http.fd,
c8fef167 872 _httpEncodeURI(buf, line, sizeof(buf)),
ef416fc2 873 con->http.hostname);
5bd77a73 874 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 875 cupsdCloseClient(con);
876 return;
ef416fc2 877 }
878
879 if (major < 2)
880 {
881 con->http.version = (http_version_t)(major * 100 + minor);
882 if (con->http.version == HTTP_1_1 && KeepAlive)
883 con->http.keep_alive = HTTP_KEEPALIVE_ON;
884 else
885 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
886 }
887 else
888 {
f11a948a 889 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 890 "[Client %d] Unsupported request line \"%s\" "
891 "from %s.", con->http.fd,
c8fef167
MS		 892 _httpEncodeURI(buf, line, sizeof(buf)),
893 con->http.hostname);
5bd77a73 894 cupsdSendError(con, HTTP_NOT_SUPPORTED, CUPSD_AUTH_NONE);
f7deaa1a 895 cupsdCloseClient(con);
896 return;
ef416fc2 897 }
898 break;
899 }
900
901 /*
902 * Handle full URLs in the request line...
903 */
904
905 if (strcmp(con->uri, "*"))
906 {
e6013cfa 907 char scheme[HTTP_MAX_URI], /* Method/scheme */
ef416fc2 908 userpass[HTTP_MAX_URI], /* Username:password */
909 hostname[HTTP_MAX_URI], /* Hostname */
910 resource[HTTP_MAX_URI]; /* Resource path */
911 int port; /* Port number */
912
913
914 /*
915 * Separate the URI into its components...
916 */
917
a4d04587 918 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
e6013cfa 919 scheme, sizeof(scheme),
ef416fc2 920 userpass, sizeof(userpass),
921 hostname, sizeof(hostname), &port,
922 resource, sizeof(resource));
923
924 /*
925 * Only allow URIs with the servername, localhost, or an IP
926 * address...
927 */
928
e6013cfa 929 if (strcmp(scheme, "file") &&
88f9aafc
MS		 930 _cups_strcasecmp(hostname, ServerName) &&
931 _cups_strcasecmp(hostname, "localhost") &&
e6013cfa 932 !isdigit(hostname[0]) && hostname[0] != '[')
ef416fc2 933 {
934 /*
935 * Nope, we don't do proxies...
936 */
937
85dda01c
MS		 938 cupsdLogMessage(CUPSD_LOG_ERROR,
939 "[Client %d] Bad URI \"%s\" in request.",
940 con->http.fd, con->uri);
5bd77a73 941 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE);
f7deaa1a 942 cupsdCloseClient(con);
943 return;
ef416fc2 944 }
945
946 /*
947 * Copy the resource portion back into the URI; both resource and
948 * con->uri are HTTP_MAX_URI bytes in size...
949 */
950
5a9febac 951 strlcpy(con->uri, resource, sizeof(con->uri));
ef416fc2 952 }
953
954 /*
955 * Process the request...
956 */
957
958 if (!strcmp(operation, "GET"))
cb7f98ee 959 con->http.state = HTTP_STATE_GET;
ef416fc2 960 else if (!strcmp(operation, "PUT"))
cb7f98ee 961 con->http.state = HTTP_STATE_PUT;
ef416fc2 962 else if (!strcmp(operation, "POST"))
cb7f98ee 963 con->http.state = HTTP_STATE_POST;
ef416fc2 964 else if (!strcmp(operation, "DELETE"))
cb7f98ee 965 con->http.state = HTTP_STATE_DELETE;
ef416fc2 966 else if (!strcmp(operation, "TRACE"))
cb7f98ee 967 con->http.state = HTTP_STATE_TRACE;
ef416fc2 968 else if (!strcmp(operation, "OPTIONS"))
cb7f98ee 969 con->http.state = HTTP_STATE_OPTIONS;
ef416fc2 970 else if (!strcmp(operation, "HEAD"))
cb7f98ee 971 con->http.state = HTTP_STATE_HEAD;
ef416fc2 972 else
973 {
85dda01c
MS		 974 cupsdLogMessage(CUPSD_LOG_ERROR,
975 "[Client %d] Bad operation \"%s\".", con->http.fd,
976 operation);
5bd77a73 977 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 978 cupsdCloseClient(con);
979 return;
ef416fc2 980 }
981
dfd5680b 982 gettimeofday(&(con->start), NULL);
ef416fc2 983 con->operation = con->http.state;
984
85dda01c 985 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] %s %s HTTP/%d.%d",
89d46774 986 con->http.fd, operation, con->uri,
ef416fc2 987 con->http.version / 100, con->http.version % 100);
988
989 con->http.status = HTTP_OK;
990
49d87452
MS		 991 if (!cupsArrayFind(ActiveClients, con))
992 {
993 cupsArrayAdd(ActiveClients, con);
994 cupsdSetBusyState();
995 }
3dfe78b3 996
cb7f98ee
MS		 997 case HTTP_STATE_OPTIONS :
998 case HTTP_STATE_DELETE :
999 case HTTP_STATE_GET :
1000 case HTTP_STATE_HEAD :
1001 case HTTP_STATE_POST :
1002 case HTTP_STATE_PUT :
1003 case HTTP_STATE_TRACE :
ef416fc2 1004 /*
1005 * Parse incoming parameters until the status changes...
1006 */
1007
f7deaa1a 1008 while ((status = httpUpdate(HTTP(con))) == HTTP_CONTINUE)
ee571f26 1009 if (!data_ready(con))
f7deaa1a 1010 break;
ef416fc2 1011
1012 if (status != HTTP_OK && status != HTTP_CONTINUE)
1013 {
f11a948a
MS		 1014 if (con->http.error && con->http.error != EPIPE)
1015 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c
MS		 1016 "[Client %d] Closing for error %d (%s) while "
1017 "reading headers.",
1018 con->http.fd, con->http.error,
f11a948a
MS		 1019 strerror(con->http.error));
1020 else
1021 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c
MS		 1022 "[Client %d] Closing on EOF while reading headers.",
1023 con->http.fd);
f11a948a 1024
5bd77a73 1025 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 1026 cupsdCloseClient(con);
1027 return;
ef416fc2 1028 }
1029 break;
1030
1031 default :
e6013cfa
MS		 1032 if (!data_ready(con) && recv(con->http.fd, buf, 1, MSG_PEEK) < 1)
1033 {
1034 /*
1035 * Connection closed...
1036 */
1037
f11a948a 1038 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 1039 "[Client %d] Closing on EOF", con->http.fd);
e6013cfa
MS		 1040 cupsdCloseClient(con);
1041 return;
1042 }
ef416fc2 1043 break; /* Anti-compiler-warning-code */
1044 }
1045
1046 /*
1047 * Handle new transfers...
1048 */
1049
1050 if (status == HTTP_OK)
1051 {
1052 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
1053 {
1054 /*
1055 * Figure out the locale from the Accept-Language and Content-Type
1056 * fields...
1057 */
1058
f11a948a
MS		 1059 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE],
1060 ',')) != NULL)
ef416fc2 1061 *ptr = '\0';
1062
f11a948a
MS		 1063 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE],
1064 ';')) != NULL)
ef416fc2 1065 *ptr = '\0';
1066
f11a948a
MS		 1067 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1068 "charset=")) != NULL)
ef416fc2 1069 {
1070 /*
1071 * Combine language and charset, and trim any extra params in the
1072 * content-type.
1073 */
1074
1075 snprintf(locale, sizeof(locale), "%s.%s",
1076 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
1077
1078 if ((ptr = strchr(locale, ',')) != NULL)
1079 *ptr = '\0';
1080 }
1081 else
f8b3a85b
MS		 1082 snprintf(locale, sizeof(locale), "%s.UTF-8",
1083 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE]);
d6ae789d 1084
ef416fc2 1085 con->language = cupsLangGet(locale);
1086 }
1087 else
1088 con->language = cupsLangGet(DefaultLocale);
1089
1090 cupsdAuthorize(con);
1091
85dda01c
MS		 1092 if (!_cups_strncasecmp(con->http.fields[HTTP_FIELD_CONNECTION],
1093 "Keep-Alive", 10) && KeepAlive)
ef416fc2 1094 con->http.keep_alive = HTTP_KEEPALIVE_ON;
85dda01c
MS		 1095 else if (!_cups_strncasecmp(con->http.fields[HTTP_FIELD_CONNECTION],
1096 "close", 5))
52f6f666 1097 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
ef416fc2 1098
1099 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
1100 con->http.version >= HTTP_1_1)
1101 {
1102 /*
1103 * HTTP/1.1 and higher require the "Host:" field...
1104 */
1105
5bd77a73 1106 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1107 {
85dda01c
MS		 1108 cupsdLogMessage(CUPSD_LOG_ERROR,
1109 "[Client %d] Missing Host: field in request.",
1110 con->http.fd);
f7deaa1a 1111 cupsdCloseClient(con);
1112 return;
1113 }
ef416fc2 1114 }
e07d4801 1115 else if (!valid_host(con))
e6013cfa
MS		 1116 {
1117 /*
1118 * Access to localhost must use "localhost" or the corresponding IPv4
1119 * or IPv6 values in the Host: field.
1120 */
1121
f11a948a 1122 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1123 "[Client %d] Request from \"%s\" using invalid Host: "
1124 "field \"%s\"", con->http.fd, con->http.hostname,
1125 con->http.fields[HTTP_FIELD_HOST]);
e6013cfa
MS		 1126
1127 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
1128 {
1129 cupsdCloseClient(con);
1130 return;
1131 }
1132 }
cb7f98ee 1133 else if (con->operation == HTTP_STATE_OPTIONS)
ef416fc2 1134 {
1135 /*
1136 * Do OPTIONS command...
1137 */
1138
5bd77a73 1139 if (con->best && con->best->type != CUPSD_AUTH_NONE)
ef416fc2 1140 {
5bd77a73 1141 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1142 {
1143 cupsdCloseClient(con);
1144 return;
1145 }
ef416fc2 1146 }
1147
88f9aafc 1148 if (!_cups_strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
ef416fc2 1149 con->http.tls == NULL)
1150 {
1151#ifdef HAVE_SSL
1152 /*
1153 * Do encryption stuff...
1154 */
1155
5bd77a73 1156 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1157 {
1158 cupsdCloseClient(con);
1159 return;
1160 }
ef416fc2 1161
1162 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
a469f8a5 1163 httpPrintf(HTTP(con), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n");
ef416fc2 1164 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1165 httpPrintf(HTTP(con), "\r\n");
07725fee 1166
1167 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1168 {
1169 cupsdCloseClient(con);
1170 return;
1171 }
ef416fc2 1172
82cc1f9a 1173 if (!cupsdStartTLS(con))
f7deaa1a 1174 {
1175 cupsdCloseClient(con);
1176 return;
1177 }
ef416fc2 1178#else
5bd77a73 1179 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 1180 {
1181 cupsdCloseClient(con);
1182 return;
1183 }
ef416fc2 1184#endif /* HAVE_SSL */
1185 }
1186
5bd77a73 1187 if (!cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1188 {
1189 cupsdCloseClient(con);
1190 return;
1191 }
ef416fc2 1192
1193 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1194 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1195 httpPrintf(HTTP(con), "\r\n");
07725fee 1196
1197 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1198 {
1199 cupsdCloseClient(con);
1200 return;
1201 }
ef416fc2 1202 }
1203 else if (!is_path_absolute(con->uri))
1204 {
1205 /*
1206 * Protect against malicious users!
1207 */
1208
bf3816c7 1209 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1210 "[Client %d] Request for non-absolute resource \"%s\".",
1211 con->http.fd, con->uri);
bf3816c7 1212
5bd77a73 1213 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1214 {
1215 cupsdCloseClient(con);
1216 return;
1217 }
ef416fc2 1218 }
1219 else
1220 {
85dda01c
MS		 1221 if (!_cups_strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION],
1222 "Upgrade") && con->http.tls == NULL)
ef416fc2 1223 {
1224#ifdef HAVE_SSL
1225 /*
1226 * Do encryption stuff...
1227 */
1228
85dda01c
MS		 1229 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL,
1230 CUPSD_AUTH_NONE))
f7deaa1a 1231 {
1232 cupsdCloseClient(con);
1233 return;
1234 }
ef416fc2 1235
1236 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
a469f8a5 1237 httpPrintf(HTTP(con), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n");
ef416fc2 1238 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1239 httpPrintf(HTTP(con), "\r\n");
07725fee 1240
1241 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1242 {
1243 cupsdCloseClient(con);
1244 return;
1245 }
ef416fc2 1246
82cc1f9a 1247 if (!cupsdStartTLS(con))
f7deaa1a 1248 {
1249 cupsdCloseClient(con);
1250 return;
1251 }
ef416fc2 1252#else
5bd77a73 1253 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 1254 {
1255 cupsdCloseClient(con);
1256 return;
1257 }
ef416fc2 1258#endif /* HAVE_SSL */
1259 }
1260
1261 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1262 {
5bd77a73 1263 cupsdSendError(con, status, CUPSD_AUTH_NONE);
f7deaa1a 1264 cupsdCloseClient(con);
1265 return;
ef416fc2 1266 }
1267
b423cd4c 1268 if (con->http.expect &&
cb7f98ee 1269 (con->operation == HTTP_STATE_POST || con->operation == HTTP_STATE_PUT))
ef416fc2 1270 {
b423cd4c 1271 if (con->http.expect == HTTP_CONTINUE)
1272 {
1273 /*
1274 * Send 100-continue header...
1275 */
1276
5bd77a73 1277 if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1278 {
1279 cupsdCloseClient(con);
1280 return;
1281 }
b423cd4c 1282 }
1283 else
1284 {
1285 /*
1286 * Send 417-expectation-failed header...
1287 */
1288
f11a948a
MS		 1289 if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL,
1290 CUPSD_AUTH_NONE))
f7deaa1a 1291 {
1292 cupsdCloseClient(con);
1293 return;
1294 }
b423cd4c 1295
1296 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1297 httpPrintf(HTTP(con), "\r\n");
07725fee 1298
1299 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1300 {
1301 cupsdCloseClient(con);
1302 return;
1303 }
b423cd4c 1304 }
ef416fc2 1305 }
1306
1307 switch (con->http.state)
1308 {
cb7f98ee 1309 case HTTP_STATE_GET_SEND :
db8b865d 1310 if ((!strncmp(con->uri, "/ppd/", 5) ||
6961465f
MS		 1311 !strncmp(con->uri, "/printers/", 10) ||
1312 !strncmp(con->uri, "/classes/", 9)) &&
ef416fc2 1313 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1314 {
1315 /*
1316 * Send PPD file - get the real printer name since printer
1317 * names are not case sensitive but filenames can be...
1318 */
1319
1320 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1321
db8b865d
MS		 1322 if (!strncmp(con->uri, "/ppd/", 5))
1323 p = cupsdFindPrinter(con->uri + 5);
6961465f 1324 else if (!strncmp(con->uri, "/printers/", 10))
db8b865d 1325 p = cupsdFindPrinter(con->uri + 10);
6961465f
MS		 1326 else
1327 {
1328 p = cupsdFindClass(con->uri + 9);
1329
1330 if (p)
1331 {
1332 int i; /* Looping var */
1333
1334 for (i = 0; i < p->num_printers; i ++)
1335 {
1336 if (!(p->printers[i]->type & CUPS_PRINTER_CLASS))
1337 {
1338 char ppdname[1024];/* PPD filename */
1339
1340 snprintf(ppdname, sizeof(ppdname), "%s/ppd/%s.ppd",
1341 ServerRoot, p->printers[i]->name);
1342 if (!access(ppdname, 0))
1343 {
1344 p = p->printers[i];
1345 break;
1346 }
1347 }
1348 }
1349
1350 if (i >= p->num_printers)
1351 p = NULL;
1352 }
1353 }
db8b865d
MS		 1354
1355 if (p)
1356 {
ef416fc2 1357 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
db8b865d 1358 }
ef416fc2 1359 else
1360 {
5bd77a73 1361 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1362 {
1363 cupsdCloseClient(con);
1364 return;
1365 }
ef416fc2 1366
1367 break;
1368 }
1369 }
db8b865d
MS		 1370 else if ((!strncmp(con->uri, "/icons/", 7) ||
1371 !strncmp(con->uri, "/printers/", 10) ||
7cf5915e
MS		 1372 !strncmp(con->uri, "/classes/", 9)) &&
1373 !strcmp(con->uri + strlen(con->uri) - 4, ".png"))
1374 {
1375 /*
1376 * Send icon file - get the real queue name since queue names are
1377 * not case sensitive but filenames can be...
1378 */
1379
1380 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".png" */
1381
db8b865d
MS		 1382 if (!strncmp(con->uri, "/icons/", 7))
1383 p = cupsdFindPrinter(con->uri + 7);
1384 else if (!strncmp(con->uri, "/printers/", 10))
7cf5915e
MS		 1385 p = cupsdFindPrinter(con->uri + 10);
1386 else
6961465f
MS		 1387 {
1388 p = cupsdFindClass(con->uri + 9);
1389
1390 if (p)
1391 {
1392 int i; /* Looping var */
1393
1394 for (i = 0; i < p->num_printers; i ++)
1395 {
1396 if (!(p->printers[i]->type & CUPS_PRINTER_CLASS))
1397 {
1398 char ppdname[1024];/* PPD filename */
1399
1400 snprintf(ppdname, sizeof(ppdname), "%s/ppd/%s.ppd",
1401 ServerRoot, p->printers[i]->name);
1402 if (!access(ppdname, 0))
1403 {
1404 p = p->printers[i];
1405 break;
1406 }
1407 }
1408 }
1409
1410 if (i >= p->num_printers)
1411 p = NULL;
1412 }
1413 }
7cf5915e
MS		 1414
1415 if (p)
1416 snprintf(con->uri, sizeof(con->uri), "/icons/%s.png", p->name);
1417 else
1418 {
1419 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
1420 {
1421 cupsdCloseClient(con);
1422 return;
1423 }
1424
1425 break;
1426 }
1427 }
0268488e 1428 else if (!WebInterface)
229681c1
MS		 1429 {
1430 /*
1431 * Web interface is disabled. Show an appropriate message...
1432 */
1433
1434 if (!cupsdSendError(con, HTTP_WEBIF_DISABLED, CUPSD_AUTH_NONE))
1435 {
1436 cupsdCloseClient(con);
1437 return;
1438 }
1439
1440 break;
1441 }
0268488e
MS		 1442
1443 if ((!strncmp(con->uri, "/admin", 6) &&
1444 strncmp(con->uri, "/admin/conf/", 12) &&
1445 strncmp(con->uri, "/admin/log/", 11)) ||
1446 !strncmp(con->uri, "/printers", 9) ||
1447 !strncmp(con->uri, "/classes", 8) ||
1448 !strncmp(con->uri, "/help", 5) ||
1449 !strncmp(con->uri, "/jobs", 5))
ef416fc2 1450 {
1451 /*
1452 * Send CGI output...
1453 */
1454
1455 if (!strncmp(con->uri, "/admin", 6))
1456 {
1457 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1458 ServerBin);
1459
b423cd4c 1460 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1461 }
1462 else if (!strncmp(con->uri, "/printers", 9))
1463 {
1464 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1465 ServerBin);
b423cd4c 1466
1467 if (con->uri[9] && con->uri[10])
1468 cupsdSetString(&con->options, con->uri + 9);
1469 else
1470 cupsdSetString(&con->options, NULL);
ef416fc2 1471 }
1472 else if (!strncmp(con->uri, "/classes", 8))
1473 {
1474 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1475 ServerBin);
b423cd4c 1476
1477 if (con->uri[8] && con->uri[9])
1478 cupsdSetString(&con->options, con->uri + 8);
1479 else
1480 cupsdSetString(&con->options, NULL);
ef416fc2 1481 }
1482 else if (!strncmp(con->uri, "/jobs", 5))
1483 {
1484 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1485 ServerBin);
b423cd4c 1486
1487 if (con->uri[5] && con->uri[6])
1488 cupsdSetString(&con->options, con->uri + 5);
1489 else
1490 cupsdSetString(&con->options, NULL);
ef416fc2 1491 }
1492 else
1493 {
1494 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1495 ServerBin);
ef416fc2 1496
b423cd4c 1497 if (con->uri[5] && con->uri[6])
1498 cupsdSetString(&con->options, con->uri + 5);
1499 else
1500 cupsdSetString(&con->options, NULL);
1501 }
ef416fc2 1502
1503 if (!cupsdSendCommand(con, con->command, con->options, 0))
1504 {
5bd77a73 1505 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1506 {
1507 cupsdCloseClient(con);
1508 return;
1509 }
ef416fc2 1510 }
1511 else
1512 cupsdLogRequest(con, HTTP_OK);
1513
1514 if (con->http.version <= HTTP_1_0)
1515 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1516 }
1517 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1518 (strchr(con->uri + 12, '/') ||
1519 strlen(con->uri) == 12)) ||
1520 (!strncmp(con->uri, "/admin/log/", 11) &&
1521 (strchr(con->uri + 11, '/') ||
1522 strlen(con->uri) == 11)))
1523 {
1524 /*
bf3816c7 1525 * GET can only be done to configuration files directly under
ef416fc2 1526 * /admin/conf...
1527 */
1528
bf3816c7
MS		 1529 cupsdLogMessage(CUPSD_LOG_ERROR,
1530 "Request for subdirectory \"%s\"!", con->uri);
1531
5bd77a73 1532 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1533 {
1534 cupsdCloseClient(con);
1535 return;
1536 }
ef416fc2 1537
1538 break;
1539 }
1540 else
1541 {
1542 /*
1543 * Serve a file...
1544 */
1545
1546 if ((filename = get_file(con, &filestats, buf,
1547 sizeof(buf))) == NULL)
1548 {
5bd77a73 1549 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1550 {
1551 cupsdCloseClient(con);
1552 return;
1553 }
ef416fc2 1554
1555 break;
1556 }
1557
4400e98d 1558 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1559
e1d6a774 1560 if (is_cgi(con, filename, &filestats, type))
ef416fc2 1561 {
1562 /*
1563 * Note: con->command and con->options were set by
e1d6a774 1564 * is_cgi()...
ef416fc2 1565 */
1566
1567 if (!cupsdSendCommand(con, con->command, con->options, 0))
1568 {
5bd77a73 1569 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1570 {
1571 cupsdCloseClient(con);
1572 return;
1573 }
ef416fc2 1574 }
1575 else
1576 cupsdLogRequest(con, HTTP_OK);
1577
1578 if (con->http.version <= HTTP_1_0)
1579 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1580 break;
1581 }
1582
1583 if (!check_if_modified(con, &filestats))
1584 {
5bd77a73 1585 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1586 {
1587 cupsdCloseClient(con);
1588 return;
1589 }
ef416fc2 1590 }
1591 else
1592 {
1593 if (type == NULL)
5a9febac 1594 strlcpy(line, "text/plain", sizeof(line));
ef416fc2 1595 else
1596 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1597
a74454a7 1598 if (!write_file(con, HTTP_OK, filename, line, &filestats))
f7deaa1a 1599 {
1600 cupsdCloseClient(con);
1601 return;
1602 }
ef416fc2 1603 }
1604 }
1605 break;
1606
cb7f98ee 1607 case HTTP_STATE_POST_RECV :
ef416fc2 1608 /*
1609 * See if the POST request includes a Content-Length field, and if
1610 * so check the length against any limits that are set...
1611 */
1612
ef416fc2 1613 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1614 MaxRequestSize > 0 &&
1615 con->http.data_remaining > MaxRequestSize)
1616 {
1617 /*
1618 * Request too large...
1619 */
1620
5bd77a73 1621 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1622 {
1623 cupsdCloseClient(con);
1624 return;
1625 }
ef416fc2 1626
1627 break;
1628 }
839a51c8
MS		 1629 else if (con->http.data_remaining < 0 ||
1630 (!con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
cb7f98ee 1631 con->http.data_encoding == HTTP_ENCODING_LENGTH))
ef416fc2 1632 {
1633 /*
1634 * Negative content lengths are invalid!
1635 */
1636
5bd77a73 1637 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1638 {
1639 cupsdCloseClient(con);
1640 return;
1641 }
ef416fc2 1642
1643 break;
1644 }
1645
1646 /*
1647 * See what kind of POST request this is; for IPP requests the
1648 * content-type field will be "application/ipp"...
1649 */
1650
1651 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1652 "application/ipp"))
1653 con->request = ippNew();
229681c1
MS		 1654 else if (!WebInterface)
1655 {
1656 /*
1657 * Web interface is disabled. Show an appropriate message...
1658 */
1659
1660 if (!cupsdSendError(con, HTTP_WEBIF_DISABLED, CUPSD_AUTH_NONE))
1661 {
1662 cupsdCloseClient(con);
1663 return;
1664 }
1665
1666 break;
1667 }
ef416fc2 1668 else if ((!strncmp(con->uri, "/admin", 6) &&
1669 strncmp(con->uri, "/admin/conf/", 12) &&
1670 strncmp(con->uri, "/admin/log/", 11)) ||
1671 !strncmp(con->uri, "/printers", 9) ||
1672 !strncmp(con->uri, "/classes", 8) ||
1673 !strncmp(con->uri, "/help", 5) ||
1674 !strncmp(con->uri, "/jobs", 5))
1675 {
1676 /*
1677 * CGI request...
1678 */
1679
1680 if (!strncmp(con->uri, "/admin", 6))
1681 {
1682 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1683 ServerBin);
1684
b423cd4c 1685 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1686 }
1687 else if (!strncmp(con->uri, "/printers", 9))
1688 {
1689 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1690 ServerBin);
b423cd4c 1691
1692 if (con->uri[9] && con->uri[10])
1693 cupsdSetString(&con->options, con->uri + 9);
1694 else
1695 cupsdSetString(&con->options, NULL);
ef416fc2 1696 }
1697 else if (!strncmp(con->uri, "/classes", 8))
1698 {
1699 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1700 ServerBin);
b423cd4c 1701
1702 if (con->uri[8] && con->uri[9])
1703 cupsdSetString(&con->options, con->uri + 8);
1704 else
1705 cupsdSetString(&con->options, NULL);
ef416fc2 1706 }
1707 else if (!strncmp(con->uri, "/jobs", 5))
1708 {
1709 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1710 ServerBin);
b423cd4c 1711
1712 if (con->uri[5] && con->uri[6])
1713 cupsdSetString(&con->options, con->uri + 5);
1714 else
1715 cupsdSetString(&con->options, NULL);
ef416fc2 1716 }
1717 else
1718 {
1719 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1720 ServerBin);
ef416fc2 1721
b423cd4c 1722 if (con->uri[5] && con->uri[6])
1723 cupsdSetString(&con->options, con->uri + 5);
1724 else
1725 cupsdSetString(&con->options, NULL);
1726 }
ef416fc2 1727
ef416fc2 1728 if (con->http.version <= HTTP_1_0)
1729 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1730 }
1731 else
1732 {
1733 /*
1734 * POST to a file...
1735 */
1736
1737 if ((filename = get_file(con, &filestats, buf,
1738 sizeof(buf))) == NULL)
1739 {
5bd77a73 1740 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1741 {
1742 cupsdCloseClient(con);
1743 return;
1744 }
ef416fc2 1745
1746 break;
1747 }
1748
4400e98d 1749 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1750
e1d6a774 1751 if (!is_cgi(con, filename, &filestats, type))
ef416fc2 1752 {
1753 /*
1754 * Only POST to CGI's...
1755 */
1756
5bd77a73 1757 if (!cupsdSendError(con, HTTP_UNAUTHORIZED, CUPSD_AUTH_NONE))
f7deaa1a 1758 {
1759 cupsdCloseClient(con);
1760 return;
1761 }
ef416fc2 1762 }
1763 }
1764 break;
1765
cb7f98ee 1766 case HTTP_STATE_PUT_RECV :
ef416fc2 1767 /*
1768 * Validate the resource name...
1769 */
1770
c41769ff 1771 if (strcmp(con->uri, "/admin/conf/cupsd.conf"))
ef416fc2 1772 {
1773 /*
c41769ff 1774 * PUT can only be done to the cupsd.conf file...
ef416fc2 1775 */
1776
bf3816c7 1777 cupsdLogMessage(CUPSD_LOG_ERROR,
c41769ff 1778 "[Client %d] Disallowed PUT request for \"%s\".",
85dda01c 1779 con->http.fd, con->uri);
bf3816c7 1780
5bd77a73 1781 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1782 {
1783 cupsdCloseClient(con);
1784 return;
1785 }
ef416fc2 1786
1787 break;
1788 }
1789
1790 /*
1791 * See if the PUT request includes a Content-Length field, and if
1792 * so check the length against any limits that are set...
1793 */
1794
ef416fc2 1795 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1796 MaxRequestSize > 0 &&
1797 con->http.data_remaining > MaxRequestSize)
1798 {
1799 /*
1800 * Request too large...
1801 */
1802
5bd77a73 1803 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1804 {
1805 cupsdCloseClient(con);
1806 return;
1807 }
ef416fc2 1808
1809 break;
1810 }
1811 else if (con->http.data_remaining < 0)
1812 {
1813 /*
1814 * Negative content lengths are invalid!
1815 */
1816
5bd77a73 1817 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1818 {
1819 cupsdCloseClient(con);
1820 return;
1821 }
ef416fc2 1822
1823 break;
1824 }
1825
1826 /*
1827 * Open a temporary file to hold the request...
1828 */
1829
1830 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1831 request_id ++);
1832 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1833
ef416fc2 1834 if (con->file < 0)
1835 {
a4924f6c 1836 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1837 "[Client %d] Unable to create request file "
1838 "\"%s\": %s", con->http.fd, con->filename,
1839 strerror(errno));
a4924f6c 1840
5bd77a73 1841 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1842 {
1843 cupsdCloseClient(con);
1844 return;
1845 }
ef416fc2 1846 }
1847
1848 fchmod(con->file, 0640);
1849 fchown(con->file, RunUser, Group);
1850 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1851 break;
1852
cb7f98ee
MS		 1853 case HTTP_STATE_DELETE :
1854 case HTTP_STATE_TRACE :
5bd77a73 1855 cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE);
f7deaa1a 1856 cupsdCloseClient(con);
1857 return;
ef416fc2 1858
cb7f98ee 1859 case HTTP_STATE_HEAD :
ef416fc2 1860 if (!strncmp(con->uri, "/printers/", 10) &&
1861 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1862 {
1863 /*
1864 * Send PPD file - get the real printer name since printer
1865 * names are not case sensitive but filenames can be...
1866 */
1867
1868 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1869
1870 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1871 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1872 else
1873 {
5bd77a73 1874 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1875 {
1876 cupsdCloseClient(con);
1877 return;
1878 }
ef416fc2 1879
1880 break;
1881 }
1882 }
229681c1
MS		 1883 else if (!strncmp(con->uri, "/printers/", 10) &&
1884 !strcmp(con->uri + strlen(con->uri) - 4, ".png"))
1885 {
1886 /*
1887 * Send PNG file - get the real printer name since printer
1888 * names are not case sensitive but filenames can be...
1889 */
1890
1891 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1892
1893 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1894 snprintf(con->uri, sizeof(con->uri), "/icons/%s.png", p->name);
1895 else
1896 {
1897 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
1898 {
1899 cupsdCloseClient(con);
1900 return;
1901 }
1902
1903 break;
1904 }
1905 }
1906 else if (!WebInterface)
1907 {
c6fc9716 1908 if (!cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE))
229681c1
MS		 1909 {
1910 cupsdCloseClient(con);
1911 return;
1912 }
1913
1914 if (httpPrintf(HTTP(con), "\r\n") < 0)
1915 {
1916 cupsdCloseClient(con);
1917 return;
1918 }
1919
1920 if (cupsdFlushHeader(con) < 0)
1921 {
1922 cupsdCloseClient(con);
1923 return;
1924 }
1925
a469f8a5
MS		 1926 con->http.state = HTTP_STATE_WAITING;
1927 DEBUG_puts("cupsdReadClient: Set state to HTTP_STATE_WAITING "
1928 "after HEAD.");
229681c1
MS		 1929 break;
1930 }
ef416fc2 1931
1932 if ((!strncmp(con->uri, "/admin", 6) &&
1933 strncmp(con->uri, "/admin/conf/", 12) &&
1934 strncmp(con->uri, "/admin/log/", 11)) ||
1935 !strncmp(con->uri, "/printers", 9) ||
1936 !strncmp(con->uri, "/classes", 8) ||
1937 !strncmp(con->uri, "/help", 5) ||
1938 !strncmp(con->uri, "/jobs", 5))
1939 {
1940 /*
1941 * CGI output...
1942 */
1943
5bd77a73 1944 if (!cupsdSendHeader(con, HTTP_OK, "text/html", CUPSD_AUTH_NONE))
f7deaa1a 1945 {
1946 cupsdCloseClient(con);
1947 return;
1948 }
ef416fc2 1949
1950 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 1951 {
1952 cupsdCloseClient(con);
1953 return;
1954 }
ef416fc2 1955
07725fee 1956 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1957 {
1958 cupsdCloseClient(con);
1959 return;
1960 }
d09495fa 1961
ef416fc2 1962 cupsdLogRequest(con, HTTP_OK);
1963 }
1964 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1965 (strchr(con->uri + 12, '/') ||
1966 strlen(con->uri) == 12)) ||
1967 (!strncmp(con->uri, "/admin/log/", 11) &&
1968 (strchr(con->uri + 11, '/') ||
1969 strlen(con->uri) == 11)))
1970 {
1971 /*
1972 * HEAD can only be done to configuration files under
1973 * /admin/conf...
1974 */
1975
bf3816c7 1976 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 1977 "[Client %d] Request for subdirectory \"%s\".",
1978 con->http.fd, con->uri);
bf3816c7 1979
5bd77a73 1980 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1981 {
1982 cupsdCloseClient(con);
1983 return;
1984 }
ef416fc2 1985
1986 break;
1987 }
1988 else if ((filename = get_file(con, &filestats, buf,
1989 sizeof(buf))) == NULL)
1990 {
f11a948a
MS		 1991 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html",
1992 CUPSD_AUTH_NONE))
f7deaa1a 1993 {
1994 cupsdCloseClient(con);
1995 return;
1996 }
ef416fc2 1997
1998 cupsdLogRequest(con, HTTP_NOT_FOUND);
1999 }
2000 else if (!check_if_modified(con, &filestats))
2001 {
5bd77a73 2002 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 2003 {
2004 cupsdCloseClient(con);
2005 return;
2006 }
ef416fc2 2007
2008 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
2009 }
2010 else
2011 {
2012 /*
2013 * Serve a file...
2014 */
2015
4400e98d 2016 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 2017 if (type == NULL)
5a9febac 2018 strlcpy(line, "text/plain", sizeof(line));
ef416fc2 2019 else
2020 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
2021
5bd77a73 2022 if (!cupsdSendHeader(con, HTTP_OK, line, CUPSD_AUTH_NONE))
f7deaa1a 2023 {
2024 cupsdCloseClient(con);
2025 return;
2026 }
ef416fc2 2027
2028 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
2029 httpGetDateString(filestats.st_mtime)) < 0)
f7deaa1a 2030 {
2031 cupsdCloseClient(con);
2032 return;
2033 }
ef416fc2 2034
2035 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
2036 (unsigned long)filestats.st_size) < 0)
f7deaa1a 2037 {
2038 cupsdCloseClient(con);
2039 return;
2040 }
ef416fc2 2041
2042 cupsdLogRequest(con, HTTP_OK);
2043 }
2044
2045 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 2046 {
2047 cupsdCloseClient(con);
2048 return;
2049 }
ef416fc2 2050
07725fee 2051 if (cupsdFlushHeader(con) < 0)
f7deaa1a 2052 {
2053 cupsdCloseClient(con);
2054 return;
2055 }
d09495fa 2056
a469f8a5
MS		 2057 con->http.state = HTTP_STATE_WAITING;
2058 DEBUG_puts("cupsdReadClient: Set state to HTTP_STATE_WAITING "
2059 "after HEAD.");
ef416fc2 2060 break;
2061
2062 default :
2063 break; /* Anti-compiler-warning-code */
2064 }
2065 }
2066 }
2067
2068 /*
2069 * Handle any incoming data...
2070 */
2071
2072 switch (con->http.state)
2073 {
cb7f98ee 2074 case HTTP_STATE_PUT_RECV :
f7deaa1a 2075 do
ef416fc2 2076 {
f7deaa1a 2077 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
2078 {
f11a948a
MS		 2079 if (con->http.error && con->http.error != EPIPE)
2080 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2081 "[Client %d] HTTP_STATE_PUT_RECV Closing for error "
f11a948a
MS		 2082 "%d (%s)", con->http.fd, con->http.error,
2083 strerror(con->http.error));
2084 else
2085 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2086 "[Client %d] HTTP_STATE_PUT_RECV Closing on EOF",
f11a948a
MS		 2087 con->http.fd);
2088
f7deaa1a 2089 cupsdCloseClient(con);
2090 return;
2091 }
2092 else if (bytes > 0)
2093 {
2094 con->bytes += bytes;
ef416fc2 2095
f7deaa1a 2096 if (write(con->file, line, bytes) < bytes)
2097 {
2098 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2099 "[Client %d] Unable to write %d bytes to "
2100 "\"%s\": %s", con->http.fd, bytes, con->filename,
2101 strerror(errno));
ef416fc2 2102
f7deaa1a 2103 close(con->file);
2104 con->file = -1;
2105 unlink(con->filename);
2106 cupsdClearString(&con->filename);
ef416fc2 2107
5bd77a73 2108 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2109 {
2110 cupsdCloseClient(con);
2111 return;
2112 }
2113 }
ef416fc2 2114 }
f7deaa1a 2115 }
cb7f98ee 2116 while (con->http.state == HTTP_STATE_PUT_RECV && data_ready(con));
ef416fc2 2117
cb7f98ee 2118 if (con->http.state == HTTP_STATE_STATUS)
ef416fc2 2119 {
2120 /*
2121 * End of file, see how big it is...
2122 */
2123
2124 fstat(con->file, &filestats);
2125
ef416fc2 2126 close(con->file);
2127 con->file = -1;
2128
2129 if (filestats.st_size > MaxRequestSize &&
2130 MaxRequestSize > 0)
2131 {
2132 /*
2133 * Request is too big; remove it and send an error...
2134 */
2135
ef416fc2 2136 unlink(con->filename);
2137 cupsdClearString(&con->filename);
2138
5bd77a73 2139 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2140 {
2141 cupsdCloseClient(con);
2142 return;
2143 }
ef416fc2 2144 }
2145
2146 /*
2147 * Install the configuration file...
2148 */
2149
c41769ff 2150 status = install_cupsd_conf(con);
ef416fc2 2151
2152 /*
2153 * Return the status to the client...
2154 */
2155
5bd77a73 2156 if (!cupsdSendError(con, status, CUPSD_AUTH_NONE))
f7deaa1a 2157 {
2158 cupsdCloseClient(con);
2159 return;
2160 }
ef416fc2 2161 }
2162 break;
2163
cb7f98ee 2164 case HTTP_STATE_POST_RECV :
f7deaa1a 2165 do
ef416fc2 2166 {
f11a948a 2167 if (con->request && con->file < 0)
ef416fc2 2168 {
f7deaa1a 2169 /*
2170 * Grab any request data from the connection...
2171 */
ef416fc2 2172
f7deaa1a 2173 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
ef416fc2 2174 {
f7deaa1a 2175 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2176 "[Client %d] IPP read error: %s", con->http.fd,
2177 cupsLastErrorString());
f7deaa1a 2178
5bd77a73 2179 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 2180 cupsdCloseClient(con);
2181 return;
ef416fc2 2182 }
f7deaa1a 2183 else if (ipp_state != IPP_DATA)
2184 {
cb7f98ee 2185 if (con->http.state == HTTP_STATE_POST_SEND)
f7deaa1a 2186 {
5bd77a73 2187 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 2188 cupsdCloseClient(con);
2189 return;
2190 }
ef416fc2 2191
6961465f
MS		 2192 if (data_ready(con))
2193 continue;
f7deaa1a 2194 break;
2195 }
2196 else
f11a948a 2197 {
85dda01c 2198 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] %d.%d %s %d",
f11a948a
MS		 2199 con->http.fd, con->request->request.op.version[0],
2200 con->request->request.op.version[1],
2201 ippOpString(con->request->request.op.operation_id),
2202 con->request->request.op.request_id);
f7deaa1a 2203 con->bytes += ippLength(con->request);
f11a948a 2204 }
f7deaa1a 2205 }
ef416fc2 2206
cb7f98ee 2207 if (con->file < 0 && con->http.state != HTTP_STATE_POST_SEND)
f7deaa1a 2208 {
2209 /*
2210 * Create a file as needed for the request data...
2211 */
ef416fc2 2212
f11a948a
MS		 2213 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
2214 request_id ++);
f7deaa1a 2215 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
ef416fc2 2216
f7deaa1a 2217 if (con->file < 0)
2218 {
a4924f6c 2219 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2220 "[Client %d] Unable to create request file "
2221 "\"%s\": %s", con->http.fd, con->filename,
2222 strerror(errno));
a4924f6c 2223
5bd77a73 2224 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2225 {
2226 cupsdCloseClient(con);
2227 return;
2228 }
2229 }
ef416fc2 2230
f7deaa1a 2231 fchmod(con->file, 0640);
2232 fchown(con->file, RunUser, Group);
2233 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2234 }
ef416fc2 2235
cb7f98ee 2236 if (con->http.state != HTTP_STATE_POST_SEND)
ef416fc2 2237 {
cb7f98ee
MS		 2238 if (!httpWait(HTTP(con), 0))
2239 return;
2240 else if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
f7deaa1a 2241 {
f11a948a
MS		 2242 if (con->http.error && con->http.error != EPIPE)
2243 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2244 "[Client %d] HTTP_STATE_POST_SEND Closing for "
f11a948a
MS		 2245 "error %d (%s)", con->http.fd, con->http.error,
2246 strerror(con->http.error));
2247 else
2248 cupsdLogMessage(CUPSD_LOG_DEBUG,
cb7f98ee 2249 "[Client %d] HTTP_STATE_POST_SEND Closing on EOF",
f11a948a
MS		 2250 con->http.fd);
2251
f7deaa1a 2252 cupsdCloseClient(con);
2253 return;
2254 }
2255 else if (bytes > 0)
2256 {
2257 con->bytes += bytes;
ef416fc2 2258
f7deaa1a 2259 if (write(con->file, line, bytes) < bytes)
2260 {
2261 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c
MS		 2262 "[Client %d] Unable to write %d bytes to "
2263 "\"%s\": %s", con->http.fd, bytes,
2264 con->filename, strerror(errno));
ef416fc2 2265
f7deaa1a 2266 close(con->file);
2267 con->file = -1;
2268 unlink(con->filename);
2269 cupsdClearString(&con->filename);
ef416fc2 2270
f11a948a
MS		 2271 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE,
2272 CUPSD_AUTH_NONE))
f7deaa1a 2273 {
2274 cupsdCloseClient(con);
2275 return;
2276 }
2277 }
2278 }
cb7f98ee 2279 else if (con->http.state == HTTP_STATE_POST_RECV)
f7deaa1a 2280 return;
cb7f98ee 2281 else if (con->http.state != HTTP_STATE_POST_SEND)
f7deaa1a 2282 {
f11a948a 2283 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2284 "[Client %d] Closing on unexpected state %s.",
a469f8a5 2285 con->http.fd, http_states[con->http.state + 1]);
f7deaa1a 2286 cupsdCloseClient(con);
2287 return;
ef416fc2 2288 }
2289 }
f7deaa1a 2290 }
cb7f98ee 2291 while (con->http.state == HTTP_STATE_POST_RECV && data_ready(con));
ef416fc2 2292
cb7f98ee 2293 if (con->http.state == HTTP_STATE_POST_SEND)
ef416fc2 2294 {
2295 if (con->file >= 0)
2296 {
2297 fstat(con->file, &filestats);
2298
ef416fc2 2299 close(con->file);
2300 con->file = -1;
2301
2302 if (filestats.st_size > MaxRequestSize &&
2303 MaxRequestSize > 0)
2304 {
2305 /*
2306 * Request is too big; remove it and send an error...
2307 */
2308
ef416fc2 2309 unlink(con->filename);
2310 cupsdClearString(&con->filename);
2311
2312 if (con->request)
2313 {
2314 /*
2315 * Delete any IPP request data...
2316 */
2317
2318 ippDelete(con->request);
2319 con->request = NULL;
2320 }
2321
5bd77a73 2322 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2323 {
2324 cupsdCloseClient(con);
2325 return;
2326 }
ef416fc2 2327 }
f8b3a85b
MS		 2328 else if (filestats.st_size == 0)
2329 {
2330 /*
2331 * Don't allow empty file...
2332 */
2333
2334 unlink(con->filename);
2335 cupsdClearString(&con->filename);
2336 }
ef416fc2 2337
2338 if (con->command)
2339 {
2340 if (!cupsdSendCommand(con, con->command, con->options, 0))
2341 {
5bd77a73 2342 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 2343 {
2344 cupsdCloseClient(con);
2345 return;
2346 }
ef416fc2 2347 }
2348 else
2349 cupsdLogRequest(con, HTTP_OK);
2350 }
2351 }
2352
2353 if (con->request)
f7deaa1a 2354 {
2355 cupsdProcessIPPRequest(con);
bc44d920 2356
2357 if (con->filename)
2358 {
bc44d920 2359 unlink(con->filename);
2360 cupsdClearString(&con->filename);
2361 }
2362
f7deaa1a 2363 return;
2364 }
ef416fc2 2365 }
2366 break;
2367
2368 default :
2369 break; /* Anti-compiler-warning-code */
2370 }
2371
cb7f98ee 2372 if (con->http.state == HTTP_STATE_WAITING)
3dfe78b3
MS		 2373 {
2374 if (!con->http.keep_alive)
f11a948a
MS		 2375 {
2376 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2377 "[Client %d] Closing because Keep-Alive disabled",
f11a948a 2378 con->http.fd);
3dfe78b3 2379 cupsdCloseClient(con);
f11a948a 2380 }
3dfe78b3
MS		 2381 else
2382 {
2383 cupsArrayRemove(ActiveClients, con);
2384 cupsdSetBusyState();
2385 }
2386 }
ef416fc2 2387}
2388
2389
2390/*
2391 * 'cupsdSendCommand()' - Send output from a command via HTTP.
2392 */
2393
2394int /* O - 1 on success, 0 on failure */
2395cupsdSendCommand(
2396 cupsd_client_t *con, /* I - Client connection */
2397 char *command, /* I - Command to run */
2398 char *options, /* I - Command-line options */
2399 int root) /* I - Run as root? */
2400{
2401 int fd; /* Standard input file descriptor */
2402
2403
2404 if (con->filename)
ed486911 2405 {
ef416fc2 2406 fd = open(con->filename, O_RDONLY);
ef416fc2 2407
ed486911 2408 if (fd < 0)
2409 {
2410 cupsdLogMessage(CUPSD_LOG_ERROR,
85dda01c 2411 "[Client %d] Unable to open \"%s\" for reading: %s",
ed486911 2412 con->http.fd, con->filename ? con->filename : "/dev/null",
2413 strerror(errno));
2414 return (0);
2415 }
ef416fc2 2416
ed486911 2417 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
2418 }
2419 else
2420 fd = -1;
ef416fc2 2421
2422 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
2423
ed486911 2424 if (fd >= 0)
2425 close(fd);
ef416fc2 2426
85dda01c
MS		 2427 cupsdLogMessage(CUPSD_LOG_INFO, "[Client %d] Started \"%s\" (pid=%d)",
2428 con->http.fd, command, con->pipe_pid);
ef416fc2 2429
85dda01c
MS		 2430 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] file=%d", con->http.fd,
2431 con->file);
ef416fc2 2432
2433 if (con->pipe_pid == 0)
2434 return (0);
2435
2436 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2437
f899b121 2438 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
ef416fc2 2439
1bc82dd9
MS		 2440 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Waiting for CGI data.",
2441 con->http.fd);
2442
ef416fc2 2443 con->sent_header = 0;
2444 con->file_ready = 0;
2445 con->got_fields = 0;
68b10830 2446 con->header_used = 0;
ef416fc2 2447
2448 return (1);
2449}
2450
2451
2452/*
2453 * 'cupsdSendError()' - Send an error message via HTTP.
2454 */
2455
2456int /* O - 1 if successful, 0 otherwise */
2457cupsdSendError(cupsd_client_t *con, /* I - Connection */
f899b121 2458 http_status_t code, /* I - Error code */
2459 int auth_type)/* I - Authentication type */
ef416fc2 2460{
b9faaae1 2461 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c 2462 "[Client %d] cupsdSendError code=%d, auth_type=%d",
b9faaae1
MS		 2463 con->http.fd, code, auth_type);
2464
4744bd90 2465#ifdef HAVE_SSL
2466 /*
2467 * Force client to upgrade for authentication if that is how the
2468 * server is configured...
2469 */
2470
2471 if (code == HTTP_UNAUTHORIZED &&
2472 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
88f9aafc 2473 _cups_strcasecmp(con->http.hostname, "localhost") &&
4744bd90 2474 !con->http.tls)
2475 {
4744bd90 2476 code = HTTP_UPGRADE_REQUIRED;
2477 }
2478#endif /* HAVE_SSL */
2479
ef416fc2 2480 /*
2481 * Put the request in the access_log file...
2482 */
2483
2484 cupsdLogRequest(con, code);
2485
ef416fc2 2486 /*
2487 * To work around bugs in some proxies, don't use Keep-Alive for some
2488 * error messages...
f7deaa1a 2489 *
2490 * Kerberos authentication doesn't work without Keep-Alive, so
2491 * never disable it in that case.
ef416fc2 2492 */
2493
5bd77a73 2494 if (code >= HTTP_BAD_REQUEST && con->http.auth_type != CUPSD_AUTH_NEGOTIATE)
ef416fc2 2495 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
2496
2497 /*
2498 * Send an error message back to the client. If the error code is a
2499 * 400 or 500 series, make sure the message contains some text, too!
2500 */
2501
f899b121 2502 if (!cupsdSendHeader(con, code, NULL, auth_type))
ef416fc2 2503 return (0);
2504
2505#ifdef HAVE_SSL
2506 if (code == HTTP_UPGRADE_REQUIRED)
2507 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
2508 return (0);
2509
a469f8a5 2510 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n") < 0)
ef416fc2 2511 return (0);
2512#endif /* HAVE_SSL */
2513
f7deaa1a 2514 if (con->http.version >= HTTP_1_1 &&
2515 con->http.keep_alive == HTTP_KEEPALIVE_OFF)
ef416fc2 2516 {
2517 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
2518 return (0);
2519 }
2520
2521 if (code >= HTTP_BAD_REQUEST)
2522 {
2523 /*
2524 * Send a human-readable error message.
2525 */
2526
80ca4592 2527 char message[4096], /* Message for user */
2528 urltext[1024], /* URL redirection text */
2529 redirect[1024]; /* Redirection link */
ef416fc2 2530 const char *text; /* Status-specific text */
2531
80ca4592 2532
2533 redirect[0] = '\0';
2534
ef416fc2 2535 if (code == HTTP_UNAUTHORIZED)
2536 text = _cupsLangString(con->language,
2537 _("Enter your username and password or the "
2538 "root username and password to access this "
f7deaa1a 2539 "page. If you are using Kerberos authentication, "
2540 "make sure you have a valid Kerberos ticket."));
ef416fc2 2541 else if (code == HTTP_UPGRADE_REQUIRED)
80ca4592 2542 {
2543 text = urltext;
2544
2545 snprintf(urltext, sizeof(urltext),
2546 _cupsLangString(con->language,
2547 _("You must access this page using the URL "
2548 "<A HREF=\"https://%s:%d%s\">"
2549 "https://%s:%d%s</A>.")),
2550 con->servername, con->serverport, con->uri,
2551 con->servername, con->serverport, con->uri);
2552
2553 snprintf(redirect, sizeof(redirect),
b86bc4cf 2554 "<META HTTP-EQUIV=\"Refresh\" "
2555 "CONTENT=\"3;URL=https://%s:%d%s\">\n",
80ca4592 2556 con->servername, con->serverport, con->uri);
2557 }
229681c1
MS		 2558 else if (code == HTTP_WEBIF_DISABLED)
2559 text = _cupsLangString(con->language,
2560 _("The web interface is currently disabled. Run "
2561 "\"cupsctl WebInterface=yes\" to enable it."));
ef416fc2 2562 else
2563 text = "";
2564
2565 snprintf(message, sizeof(message),
745129be
MS		 2566 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" "
2567 "\"http://www.w3.org/TR/html4/loose.dtd\">\n"
ef416fc2 2568 "<HTML>\n"
2569 "<HEAD>\n"
2570 "\t<META HTTP-EQUIV=\"Content-Type\" "
2571 "CONTENT=\"text/html; charset=utf-8\">\n"
229681c1 2572 "\t<TITLE>%s - " CUPS_SVERSION "</TITLE>\n"
ef416fc2 2573 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2574 "HREF=\"/cups.css\">\n"
80ca4592 2575 "%s"
ef416fc2 2576 "</HEAD>\n"
2577 "<BODY>\n"
229681c1 2578 "<H1>%s</H1>\n"
ef416fc2 2579 "<P>%s</P>\n"
2580 "</BODY>\n"
2581 "</HTML>\n",
41e6c1f1
MS		 2582 _httpStatus(con->language, code), redirect,
2583 _httpStatus(con->language, code), text);
ef416fc2 2584
2585 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2586 return (0);
2587 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2588 (int)strlen(message)) < 0)
2589 return (0);
2590 if (httpPrintf(HTTP(con), "\r\n") < 0)
2591 return (0);
2592 if (httpPrintf(HTTP(con), "%s", message) < 0)
2593 return (0);
2594 }
2595 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2596 return (0);
2597
07725fee 2598 if (cupsdFlushHeader(con) < 0)
2599 return (0);
d09495fa 2600
a469f8a5
MS		 2601 con->http.state = HTTP_STATE_WAITING;
2602
2603 DEBUG_puts("cupsdSendError: Set state to HTTP_STATE_WAITING.");
ef416fc2 2604
2605 return (1);
2606}
2607
2608
ef416fc2 2609/*
2610 * 'cupsdSendHeader()' - Send an HTTP request.
2611 */
2612
2613int /* O - 1 on success, 0 on failure */
f899b121 2614cupsdSendHeader(
2615 cupsd_client_t *con, /* I - Client to send to */
2616 http_status_t code, /* I - HTTP status code */
2617 char *type, /* I - MIME type of document */
2618 int auth_type) /* I - Type of authentication */
ef416fc2 2619{
5a738aea 2620 char auth_str[1024]; /* Authorization string */
f7deaa1a 2621
2622
4744bd90 2623 /*
2624 * Send the HTTP status header...
2625 */
2626
b423cd4c 2627 if (code == HTTP_CONTINUE)
2628 {
4744bd90 2629 /*
2630 * 100-continue doesn't send any headers...
2631 */
2632
07725fee 2633 return (httpPrintf(HTTP(con), "HTTP/%d.%d 100 Continue\r\n\r\n",
2634 con->http.version / 100, con->http.version % 100) > 0);
b423cd4c 2635 }
229681c1
MS		 2636 else if (code == HTTP_WEBIF_DISABLED)
2637 {
2638 /*
2639 * Treat our special "web interface is disabled" status as "200 OK" for web
2640 * browsers.
2641 */
2642
2643 code = HTTP_OK;
2644 }
b423cd4c 2645
07725fee 2646 httpFlushWrite(HTTP(con));
2647
cb7f98ee 2648 con->http.data_encoding = HTTP_ENCODING_FIELDS;
07725fee 2649
2650 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2651 con->http.version % 100, code, httpStatus(code)) < 0)
2652 return (0);
ef416fc2 2653 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2654 return (0);
2655 if (ServerHeader)
2656 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2657 return (0);
2658 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2659 {
2660 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2661 return (0);
2662 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2663 KeepAliveTimeout) < 0)
2664 return (0);
2665 }
2666 if (code == HTTP_METHOD_NOT_ALLOWED)
e6013cfa 2667 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n") < 0)
ef416fc2 2668 return (0);
2669
2670 if (code == HTTP_UNAUTHORIZED)
2671 {
5bd77a73 2672 if (auth_type == CUPSD_AUTH_NONE)
f899b121 2673 {
5bd77a73 2674 if (!con->best || con->best->type <= CUPSD_AUTH_NONE)
dcb445bc 2675 auth_type = cupsdDefaultAuthType();
f899b121 2676 else
2677 auth_type = con->best->type;
2678 }
f7deaa1a 2679
2680 auth_str[0] = '\0';
2681
5bd77a73 2682 if (auth_type == CUPSD_AUTH_BASIC || auth_type == CUPSD_AUTH_BASICDIGEST)
f7deaa1a 2683 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
5bd77a73 2684 else if (auth_type == CUPSD_AUTH_DIGEST)
f7deaa1a 2685 snprintf(auth_str, sizeof(auth_str), "Digest realm=\"CUPS\", nonce=\"%s\"",
2686 con->http.hostname);
2687#ifdef HAVE_GSSAPI
eac3a0a0 2688 else if (auth_type == CUPSD_AUTH_NEGOTIATE)
6961465f
MS		 2689 {
2690# ifdef AF_LOCAL
2691 if (_httpAddrFamily(con->http.hostaddr) == AF_LOCAL)
2692 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
2693 else
2694# endif /* AF_LOCAL */
f7deaa1a 2695 strlcpy(auth_str, "Negotiate", sizeof(auth_str));
6961465f 2696 }
f7deaa1a 2697#endif /* HAVE_GSSAPI */
2698
e07d4801 2699 if (con->best && auth_type != CUPSD_AUTH_NEGOTIATE &&
88f9aafc 2700 !_cups_strcasecmp(con->http.hostname, "localhost"))
ef416fc2 2701 {
e07d4801
MS		 2702 /*
2703 * Add a "trc" (try root certification) parameter for local non-Kerberos
2704 * requests when the request requires system group membership - then the
2705 * client knows the root certificate can/should be used.
2706 *
f3c17241 2707 * Also, for OS X we also look for @AUTHKEY and add an "authkey"
e07d4801
MS		 2708 * parameter as needed...
2709 */
2710
10d09e33
MS		 2711 char *name, /* Current user name */
2712 *auth_key; /* Auth key buffer */
f7deaa1a 2713 size_t auth_size; /* Size of remaining buffer */
2714
f7deaa1a 2715 auth_key = auth_str + strlen(auth_str);
2716 auth_size = sizeof(auth_str) - (auth_key - auth_str);
2717
10d09e33
MS		 2718 for (name = (char *)cupsArrayFirst(con->best->names);
2719 name;
2720 name = (char *)cupsArrayNext(con->best->names))
f7deaa1a 2721 {
e07d4801 2722#ifdef HAVE_AUTHORIZATION_H
88f9aafc 2723 if (!_cups_strncasecmp(name, "@AUTHKEY(", 9))
f7deaa1a 2724 {
10d09e33 2725 snprintf(auth_key, auth_size, ", authkey=\"%s\"", name + 9);
f7deaa1a 2726 /* end parenthesis is stripped in conf.c */
2727 break;
2728 }
e07d4801
MS		 2729 else
2730#endif /* HAVE_AUTHORIZATION_H */
88f9aafc 2731 if (!_cups_strcasecmp(name, "@SYSTEM"))
f7deaa1a 2732 {
e07d4801
MS		 2733#ifdef HAVE_AUTHORIZATION_H
2734 if (SystemGroupAuthKey)
2735 snprintf(auth_key, auth_size,
07ed0e9a 2736 ", authkey=\"%s\"",
e07d4801
MS		 2737 SystemGroupAuthKey);
2738 else
2739#else
f11a948a 2740 strlcpy(auth_key, ", trc=\"y\"", auth_size);
e07d4801 2741#endif /* HAVE_AUTHORIZATION_H */
f7deaa1a 2742 break;
2743 }
2744 }
ef416fc2 2745 }
f7deaa1a 2746
bc44d920 2747 if (auth_str[0])
2748 {
68b10830 2749 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2750 "[Client %d] WWW-Authenticate: %s", con->http.fd,
bc44d920 2751 auth_str);
2752
2753 if (httpPrintf(HTTP(con), "WWW-Authenticate: %s\r\n", auth_str) < 0)
2754 return (0);
2755 }
ef416fc2 2756 }
2757
e1d6a774 2758 if (con->language && strcmp(con->language->language, "C"))
ef416fc2 2759 {
2760 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2761 con->language->language) < 0)
2762 return (0);
2763 }
2764
e1d6a774 2765 if (type)
ef416fc2 2766 {
2767 if (!strcmp(type, "text/html"))
2768 {
2769 if (httpPrintf(HTTP(con),
2770 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2771 return (0);
2772 }
2773 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2774 return (0);
2775 }
2776
2777 return (1);
2778}
2779
2780
2781/*
2782 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2783 */
2784
2785void
2786cupsdUpdateCGI(void)
2787{
2788 char *ptr, /* Pointer to end of line in buffer */
2789 message[1024]; /* Pointer to message text */
2790 int loglevel; /* Log level for message */
2791
2792
2793 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2794 message, sizeof(message))) != NULL)
f0ab5bff
MS		 2795 {
2796 if (loglevel == CUPSD_LOG_INFO)
2797 cupsdLogMessage(CUPSD_LOG_INFO, "%s", message);
2798
ef416fc2 2799 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2800 break;
f0ab5bff 2801 }
ef416fc2 2802
d09495fa 2803 if (ptr == NULL && !CGIStatusBuffer->bufused)
ef416fc2 2804 {
2805 /*
2806 * Fatal error on pipe - should never happen!
2807 */
2808
2809 cupsdLogMessage(CUPSD_LOG_CRIT,
2810 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2811 strerror(errno));
2812 }
2813}
2814
2815
2816/*
2817 * 'cupsdWriteClient()' - Write data to a client as needed.
2818 */
2819
f7deaa1a 2820void
ef416fc2 2821cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2822{
68b10830
MS		 2823 int bytes, /* Number of bytes written */
2824 field_col; /* Current column */
2825 char *bufptr, /* Pointer into buffer */
2826 *bufend; /* Pointer to end of buffer */
ef416fc2 2827 ipp_state_t ipp_state; /* IPP state value */
2828
2829
f2d18633 2830 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c
MS		 2831 "[Client %d] cupsdWriteClient "
2832 "error=%d, "
2833 "used=%d, "
2834 "state=%s, "
cb7f98ee 2835 "data_encoding=HTTP_ENCODING_%s, "
85dda01c
MS		 2836 "data_remaining=" CUPS_LLFMT ", "
2837 "response=%p(%s), "
2838 "pipe_pid=%d, "
2839 "file=%d",
2840 con->http.fd, con->http.error, con->http.used,
a469f8a5 2841 http_states[con->http.state + 1],
cb7f98ee 2842 con->http.data_encoding == HTTP_ENCODING_CHUNKED ?
85dda01c
MS		 2843 "CHUNKED" : "LENGTH",
2844 CUPS_LLCAST con->http.data_remaining,
2845 con->response,
2846 con->response ? ipp_states[con->response->state] : "",
2847 con->pipe_pid, con->file);
ef416fc2 2848
cb7f98ee
MS		 2849 if (con->http.state != HTTP_STATE_GET_SEND &&
2850 con->http.state != HTTP_STATE_POST_SEND)
8b116e60
MS		 2851 {
2852 /*
2853 * If we get called in the wrong state, then something went wrong with the
2854 * connection and we need to shut it down...
2855 */
2856
f11a948a 2857 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 2858 "[Client %d] Closing on unexpected HTTP state %s.",
a469f8a5 2859 con->http.fd, http_states[con->http.state + 1]);
8b116e60 2860 cupsdCloseClient(con);
f7deaa1a 2861 return;
8b116e60 2862 }
f7deaa1a 2863
2864 if (con->pipe_pid)
2865 {
2866 /*
2867 * Make sure we select on the CGI output...
2868 */
2869
f899b121 2870 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
f7deaa1a 2871
1bc82dd9
MS		 2872 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Waiting for CGI data.",
2873 con->http.fd);
2874
f7deaa1a 2875 if (!con->file_ready)
2876 {
2877 /*
2878 * Try again later when there is CGI output available...
2879 */
2880
2881 cupsdRemoveSelect(con->http.fd);
2882 return;
2883 }
2884
2885 con->file_ready = 0;
2886 }
ef416fc2 2887
b94498cf 2888 if (con->response && con->response->state != IPP_DATA)
ef416fc2 2889 {
94436c5a
MS		 2890 int wused = con->http.wused; /* Previous write buffer use */
2891
2892 do
2893 {
2894 /*
2895 * Write a single attribute or the IPP message header...
2896 */
2897
21f36711 2898 ipp_state = ippWrite(HTTP(con), con->response);
94436c5a
MS		 2899
2900 /*
2901 * If the write buffer has been flushed, stop buffering up attributes...
2902 */
2903
2904 if (con->http.wused <= wused)
2905 break;
2906 }
2907 while (ipp_state != IPP_STATE_DATA && ipp_state != IPP_STATE_ERROR);
2908
f2d18633 2909 cupsdLogMessage(CUPSD_LOG_DEBUG,
21f36711
MS		 2910 "[Client %d] Writing IPP response, ipp_state=%s, old "
2911 "wused=%d, new wused=%d", con->http.fd,
2912 ipp_state == IPP_STATE_ERROR ? "ERROR" :
2913 ipp_state == IPP_STATE_IDLE ? "IDLE" :
2914 ipp_state == IPP_STATE_HEADER ? "HEADER" :
2915 ipp_state == IPP_STATE_ATTRIBUTE ? "ATTRIBUTE" : "DATA",
2916 wused, con->http.wused);
f2d18633 2917
94436c5a
MS		 2918 if (con->http.wused > 0)
2919 httpFlushWrite(HTTP(con));
2920
2921 bytes = ipp_state != IPP_STATE_ERROR &&
2922 (con->file >= 0 || ipp_state != IPP_STATE_DATA);
21f36711
MS		 2923
2924 cupsdLogMessage(CUPSD_LOG_DEBUG,
2925 "[Client %d] bytes=%d, http_state=%d, "
2926 "data_remaining=" CUPS_LLFMT,
2927 con->http.fd, (int)bytes, con->http.state,
2928 CUPS_LLCAST con->http.data_remaining);
ef416fc2 2929 }
a2326b5b 2930 else if ((bytes = read(con->file, con->header + con->header_used,
68b10830 2931 sizeof(con->header) - con->header_used)) > 0)
ef416fc2 2932 {
68b10830
MS		 2933 con->header_used += bytes;
2934
ef416fc2 2935 if (con->pipe_pid && !con->got_fields)
2936 {
2937 /*
2938 * Inspect the data for Content-Type and other fields.
2939 */
2940
68b10830
MS		 2941 for (bufptr = con->header, bufend = con->header + con->header_used,
2942 field_col = 0;
2943 !con->got_fields && bufptr < bufend;
2944 bufptr ++)
d1c13e16 2945 {
ef416fc2 2946 if (*bufptr == '\n')
2947 {
2948 /*
2949 * Send line to client...
2950 */
2951
68b10830 2952 if (bufptr > con->header && bufptr[-1] == '\r')
ef416fc2 2953 bufptr[-1] = '\0';
2954 *bufptr++ = '\0';
2955
68b10830 2956 cupsdLogMessage(CUPSD_LOG_DEBUG, "Script header: %s", con->header);
ef416fc2 2957
2958 if (!con->sent_header)
2959 {
2960 /*
2961 * Handle redirection and CGI status codes...
2962 */
2963
88f9aafc 2964 if (!_cups_strncasecmp(con->header, "Location:", 9))
d6ae789d 2965 {
321d8d57
MS		 2966 if (!cupsdSendHeader(con, HTTP_SEE_OTHER, NULL, CUPSD_AUTH_NONE))
2967 {
2968 cupsdCloseClient(con);
2969 return;
2970 }
2971
07725fee 2972 con->sent_header = 2;
2973
d6ae789d 2974 if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
f7deaa1a 2975 return;
d6ae789d 2976 }
88f9aafc 2977 else if (!_cups_strncasecmp(con->header, "Status:", 7))
07725fee 2978 {
68b10830
MS		 2979 cupsdSendError(con, (http_status_t)atoi(con->header + 7),
2980 CUPSD_AUTH_NONE);
07725fee 2981 con->sent_header = 2;
2982 }
ef416fc2 2983 else
4744bd90 2984 {
321d8d57
MS		 2985 if (!cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE))
2986 {
2987 cupsdCloseClient(con);
2988 return;
2989 }
2990
07725fee 2991 con->sent_header = 1;
ef416fc2 2992
4744bd90 2993 if (con->http.version == HTTP_1_1)
2994 {
4744bd90 2995 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
f7deaa1a 2996 return;
4744bd90 2997 }
2998 }
ef416fc2 2999 }
3000
88f9aafc 3001 if (_cups_strncasecmp(con->header, "Status:", 7))
68b10830 3002 httpPrintf(HTTP(con), "%s\r\n", con->header);
ef416fc2 3003
ef416fc2 3004 /*
3005 * Update buffer...
3006 */
3007
68b10830 3008 con->header_used -= bufptr - con->header;
d1c13e16 3009
68b10830
MS		 3010 if (con->header_used > 0)
3011 memmove(con->header, bufptr, con->header_used);
d1c13e16 3012
68b10830 3013 bufptr = con->header - 1;
ef416fc2 3014
3015 /*
3016 * See if the line was empty...
3017 */
3018
68b10830 3019 if (field_col == 0)
d09495fa 3020 {
ef416fc2 3021 con->got_fields = 1;
d09495fa 3022
07725fee 3023 if (cupsdFlushHeader(con) < 0)
3024 {
3025 cupsdCloseClient(con);
f7deaa1a 3026 return;
07725fee 3027 }
d09495fa 3028
3029 if (con->http.version == HTTP_1_1)
cb7f98ee 3030 con->http.data_encoding = HTTP_ENCODING_CHUNKED;
d09495fa 3031 }
ef416fc2 3032 else
68b10830 3033 field_col = 0;
ef416fc2 3034 }
3035 else if (*bufptr != '\r')
68b10830 3036 field_col ++;
d1c13e16 3037 }
ef416fc2 3038
68b10830 3039 if (!con->got_fields)
47879b8b 3040 {
ef416fc2 3041 con->http.activity = time(NULL);
47879b8b
MS		 3042 return;
3043 }
ef416fc2 3044 }
3045
68b10830 3046 if (con->header_used > 0)
ef416fc2 3047 {
68b10830 3048 if (httpWrite2(HTTP(con), con->header, con->header_used) < 0)
4744bd90 3049 {
f11a948a 3050 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 3051 "[Client %d] Closing for error %d (%s)",
f11a948a
MS		 3052 con->http.fd, con->http.error,
3053 strerror(con->http.error));
4744bd90 3054 cupsdCloseClient(con);
f7deaa1a 3055 return;
4744bd90 3056 }
ef416fc2 3057
cb7f98ee 3058 if (con->http.data_encoding == HTTP_ENCODING_CHUNKED)
01ce6322 3059 httpFlushWrite(HTTP(con));
ae71f5de 3060
68b10830 3061 con->bytes += con->header_used;
ef416fc2 3062
cb7f98ee 3063 if (con->http.state == HTTP_STATE_WAITING)
4744bd90 3064 bytes = 0;
68b10830
MS		 3065 else
3066 bytes = con->header_used;
3067
3068 con->header_used = 0;
4744bd90 3069 }
ef416fc2 3070 }
3071
8b116e60 3072 if (bytes <= 0 ||
21f36711
MS		 3073 (con->http.state != HTTP_STATE_GET_SEND &&
3074 con->http.state != HTTP_STATE_POST_SEND))
ef416fc2 3075 {
38e73f87 3076 if (!con->sent_header && con->pipe_pid)
94da7e34
MS		 3077 cupsdSendError(con, HTTP_SERVER_ERROR, CUPSD_AUTH_NONE);
3078 else
3079 {
3080 cupsdLogRequest(con, HTTP_OK);
ef416fc2 3081
94da7e34 3082 httpFlushWrite(HTTP(con));
ef416fc2 3083
21f36711
MS		 3084 if (con->http.data_encoding == HTTP_ENCODING_CHUNKED &&
3085 con->sent_header == 1)
ef416fc2 3086 {
94da7e34
MS		 3087 if (httpWrite2(HTTP(con), "", 0) < 0)
3088 {
f11a948a 3089 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 3090 "[Client %d] Closing for error %d (%s)",
f11a948a
MS		 3091 con->http.fd, con->http.error,
3092 strerror(con->http.error));
94da7e34
MS		 3093 cupsdCloseClient(con);
3094 return;
3095 }
ef416fc2 3096 }
3097 }
3098
cb7f98ee 3099 con->http.state = HTTP_STATE_WAITING;
ef416fc2 3100
f7deaa1a 3101 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 3102
1bc82dd9
MS		 3103 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Waiting for request.",
3104 con->http.fd);
3105
ef416fc2 3106 if (con->file >= 0)
3107 {
f7deaa1a 3108 cupsdRemoveSelect(con->file);
ef416fc2 3109
3110 if (con->pipe_pid)
3111 cupsdEndProcess(con->pipe_pid, 0);
3112
ef416fc2 3113 close(con->file);
3114 con->file = -1;
3115 con->pipe_pid = 0;
3116 }
3117
3118 if (con->filename)
3119 {
ef416fc2 3120 unlink(con->filename);
3121 cupsdClearString(&con->filename);
3122 }
3123
2abf387c 3124 if (con->request)
ef416fc2 3125 {
3126 ippDelete(con->request);
3127 con->request = NULL;
3128 }
3129
2abf387c 3130 if (con->response)
ef416fc2 3131 {
3132 ippDelete(con->response);
3133 con->response = NULL;
3134 }
3135
3136 cupsdClearString(&con->command);
3137 cupsdClearString(&con->options);
b86bc4cf 3138 cupsdClearString(&con->query_string);
ef416fc2 3139
3140 if (!con->http.keep_alive)
3141 {
f11a948a 3142 cupsdLogMessage(CUPSD_LOG_DEBUG,
85dda01c 3143 "[Client %d] Closing because Keep-Alive disabled.",
f11a948a 3144 con->http.fd);
ef416fc2 3145 cupsdCloseClient(con);
f7deaa1a 3146 return;
ef416fc2 3147 }
f11a948a
MS		 3148 else
3149 {
3150 cupsArrayRemove(ActiveClients, con);
3151 cupsdSetBusyState();
3152 }
ef416fc2 3153 }
3154
3155 con->http.activity = time(NULL);
f7deaa1a 3156}
ef416fc2 3157
f7deaa1a 3158
e1d6a774 3159/*
3160 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
3161 */
3162
3163static int /* O - 1 if modified since */
3164check_if_modified(
3165 cupsd_client_t *con, /* I - Client connection */
3166 struct stat *filestats) /* I - File information */
3167{
3168 char *ptr; /* Pointer into field */
3169 time_t date; /* Time/date value */
3170 off_t size; /* Size/length value */
3171
3172
3173 size = 0;
3174 date = 0;
3175 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
3176
3177 if (*ptr == '\0')
3178 return (1);
3179
3180 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c 3181 "[Client %d] check_if_modified "
b9faaae1 3182 "filestats=%p(" CUPS_LLFMT ", %d)) If-Modified-Since=\"%s\"",
85dda01c 3183 con->http.fd, filestats, CUPS_LLCAST filestats->st_size,
b9faaae1 3184 (int)filestats->st_mtime, ptr);
e1d6a774 3185
3186 while (*ptr != '\0')
3187 {
3188 while (isspace(*ptr) || *ptr == ';')
3189 ptr ++;
3190
88f9aafc 3191 if (_cups_strncasecmp(ptr, "length=", 7) == 0)
e1d6a774 3192 {
3193 ptr += 7;
3194 size = strtoll(ptr, NULL, 10);
3195
3196 while (isdigit(*ptr))
3197 ptr ++;
3198 }
3199 else if (isalpha(*ptr))
3200 {
3201 date = httpGetDateTime(ptr);
3202 while (*ptr != '\0' && *ptr != ';')
3203 ptr ++;
3204 }
e53920b9 3205 else
3206 ptr ++;
e1d6a774 3207 }
3208
e1d6a774 3209 return ((size != filestats->st_size && size != 0) ||
3210 (date < filestats->st_mtime && date != 0) ||
3211 (size == 0 && date == 0));
3212}
3213
3214
3dfe78b3
MS		 3215/*
3216 * 'compare_clients()' - Compare two client connections.
3217 */
3218
3219static int /* O - Result of comparison */
3220compare_clients(cupsd_client_t *a, /* I - First client */
3221 cupsd_client_t *b, /* I - Second client */
3222 void *data) /* I - User data (not used) */
3223{
3224 (void)data;
3225
3226 if (a == b)
3227 return (0);
3228 else if (a < b)
3229 return (-1);
3230 else
3231 return (1);
3232}
3233
3234
85dda01c
MS		 3235/*
3236 * 'data_ready()' - Check whether data is available from a client.
3237 */
ef416fc2 3238
85dda01c
MS		 3239static int /* O - 1 if data is ready, 0 otherwise */
3240data_ready(cupsd_client_t *con) /* I - Client */
3241{
3242 if (con->http.used > 0)
3243 return (1);
3244#ifdef HAVE_SSL
3245 else if (con->http.tls)
e1d6a774 3246 {
85dda01c
MS		 3247# ifdef HAVE_LIBSSL
3248 if (SSL_pending((SSL *)(con->http.tls)))
3249 return (1);
3250# elif defined(HAVE_GNUTLS)
3251 if (gnutls_record_check_pending(con->http.tls))
3252 return (1);
3253# elif defined(HAVE_CDSASSL)
3254 size_t bytes; /* Bytes that are available */
ef416fc2 3255
85dda01c
MS		 3256 if (!SSLGetBufferedReadSize(con->http.tls, &bytes) && bytes > 0)
3257 return (1);
3258# endif /* HAVE_LIBSSL */
e1d6a774 3259 }
85dda01c 3260#endif /* HAVE_SSL */
ef416fc2 3261
85dda01c
MS		 3262 return (0);
3263}
ef416fc2 3264
ef416fc2 3265
ef416fc2 3266/*
3267 * 'get_file()' - Get a filename and state info.
3268 */
3269
3270static char * /* O - Real filename */
3271get_file(cupsd_client_t *con, /* I - Client connection */
3272 struct stat *filestats, /* O - File information */
3273 char *filename, /* IO - Filename buffer */
3274 int len) /* I - Buffer length */
3275{
3276 int status; /* Status of filesystem calls */
3277 char *ptr; /* Pointer info filename */
3278 int plen; /* Remaining length after pointer */
db1f069b 3279 char language[7]; /* Language subdirectory, if any */
ef416fc2 3280
3281
3282 /*
f7deaa1a 3283 * Figure out the real filename...
ef416fc2 3284 */
3285
db1f069b
MS		 3286 language[0] = '\0';
3287
7cf5915e 3288 if (!strncmp(con->uri, "/ppd/", 5) && !strchr(con->uri + 5, '/'))
ef416fc2 3289 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
7cf5915e
MS		 3290 else if (!strncmp(con->uri, "/icons/", 7) && !strchr(con->uri + 7, '/'))
3291 {
3292 snprintf(filename, len, "%s/%s", CacheDir, con->uri + 7);
3293 if (access(filename, F_OK) < 0)
3294 snprintf(filename, len, "%s/images/generic.png", DocumentRoot);
3295 }
f7deaa1a 3296 else if (!strncmp(con->uri, "/rss/", 5) && !strchr(con->uri + 5, '/'))
3297 snprintf(filename, len, "%s/rss/%s", CacheDir, con->uri + 5);
ef416fc2 3298 else if (!strncmp(con->uri, "/admin/conf/", 12))
3299 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
3300 else if (!strncmp(con->uri, "/admin/log/", 11))
3301 {
2e4ff8af 3302 if (!strncmp(con->uri + 11, "access_log", 10) && AccessLog[0] == '/')
ef416fc2 3303 strlcpy(filename, AccessLog, len);
2e4ff8af 3304 else if (!strncmp(con->uri + 11, "error_log", 9) && ErrorLog[0] == '/')
ef416fc2 3305 strlcpy(filename, ErrorLog, len);
2e4ff8af 3306 else if (!strncmp(con->uri + 11, "page_log", 8) && PageLog[0] == '/')
ef416fc2 3307 strlcpy(filename, PageLog, len);
3308 else
3309 return (NULL);
3310 }
d6ae789d 3311 else if (con->language)
db1f069b
MS		 3312 {
3313 snprintf(language, sizeof(language), "/%s", con->language->language);
3314 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
3315 }
ef416fc2 3316 else
3317 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3318
3319 if ((ptr = strchr(filename, '?')) != NULL)
3320 *ptr = '\0';
3321
3322 /*
3323 * Grab the status for this language; if there isn't a language-specific file
3324 * then fallback to the default one...
3325 */
3326
db1f069b 3327 if ((status = stat(filename, filestats)) != 0 && language[0] &&
7cf5915e 3328 strncmp(con->uri, "/icons/", 7) &&
d6ae789d 3329 strncmp(con->uri, "/ppd/", 5) &&
7cf5915e 3330 strncmp(con->uri, "/rss/", 5) &&
d6ae789d 3331 strncmp(con->uri, "/admin/conf/", 12) &&
3332 strncmp(con->uri, "/admin/log/", 11))
ef416fc2 3333 {
3334 /*
d6ae789d 3335 * Drop the country code...
ef416fc2 3336 */
3337
db1f069b
MS		 3338 language[3] = '\0';
3339 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
d6ae789d 3340
3341 if ((ptr = strchr(filename, '?')) != NULL)
3342 *ptr = '\0';
3343
3344 if ((status = stat(filename, filestats)) != 0)
ef416fc2 3345 {
d6ae789d 3346 /*
3347 * Drop the language prefix and try the root directory...
3348 */
3349
db1f069b 3350 language[0] = '\0';
ef416fc2 3351 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3352
3353 if ((ptr = strchr(filename, '?')) != NULL)
3354 *ptr = '\0';
3355
3356 status = stat(filename, filestats);
3357 }
3358 }
3359
3360 /*
3361 * If we're found a directory, get the index.html file instead...
3362 */
3363
3364 if (!status && S_ISDIR(filestats->st_mode))
3365 {
db1f069b
MS		 3366 /*
3367 * Make sure the URI ends with a slash...
3368 */
ef416fc2 3369
db1f069b
MS		 3370 if (con->uri[strlen(con->uri) - 1] != '/')
3371 strlcat(con->uri, "/", sizeof(con->uri));
ef416fc2 3372
db1f069b
MS		 3373 /*
3374 * Find the directory index file, trying every language...
3375 */
ef416fc2 3376
db1f069b 3377 do
ef416fc2 3378 {
db1f069b
MS		 3379 if (status && language[0])
3380 {
3381 /*
3382 * Try a different language subset...
3383 */
3384
3385 if (language[3])
3386 language[0] = '\0'; /* Strip country code */
3387 else
3388 language[0] = '\0'; /* Strip language */
3389 }
3390
3391 /*
3392 * Look for the index file...
3393 */
3394
3395 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
3396
3397 if ((ptr = strchr(filename, '?')) != NULL)
3398 *ptr = '\0';
3399
3400 ptr = filename + strlen(filename);
3401 plen = len - (ptr - filename);
3402
3403 strlcpy(ptr, "index.html", plen);
ef416fc2 3404 status = stat(filename, filestats);
db1f069b
MS		 3405
3406#ifdef HAVE_JAVA
3407 if (status)
3408 {
3409 strlcpy(ptr, "index.class", plen);
3410 status = stat(filename, filestats);
3411 }
ef416fc2 3412#endif /* HAVE_JAVA */
3413
3414#ifdef HAVE_PERL
db1f069b
MS		 3415 if (status)
3416 {
3417 strlcpy(ptr, "index.pl", plen);
3418 status = stat(filename, filestats);
3419 }
ef416fc2 3420#endif /* HAVE_PERL */
3421
3422#ifdef HAVE_PHP
db1f069b
MS		 3423 if (status)
3424 {
3425 strlcpy(ptr, "index.php", plen);
3426 status = stat(filename, filestats);
3427 }
ef416fc2 3428#endif /* HAVE_PHP */
3429
3430#ifdef HAVE_PYTHON
db1f069b
MS		 3431 if (status)
3432 {
3433 strlcpy(ptr, "index.pyc", plen);
3434 status = stat(filename, filestats);
3435 }
ef416fc2 3436
db1f069b
MS		 3437 if (status)
3438 {
3439 strlcpy(ptr, "index.py", plen);
3440 status = stat(filename, filestats);
3441 }
ef416fc2 3442#endif /* HAVE_PYTHON */
db1f069b
MS		 3443
3444 }
3445 while (status && language[0]);
ef416fc2 3446 }
3447
b9faaae1 3448 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3449 "[Client %d] get_file filestats=%p, filename=%p, len=%d, "
3450 "returning \"%s\".", con->http.fd, filestats, filename, len,
b9faaae1 3451 status ? "(null)" : filename);
ef416fc2 3452
ef416fc2 3453 if (status)
3454 return (NULL);
3455 else
3456 return (filename);
3457}
3458
3459
3460/*
c41769ff 3461 * 'install_cupsd_conf()' - Install a configuration file.
ef416fc2 3462 */
3463
3464static http_status_t /* O - Status */
c41769ff 3465install_cupsd_conf(cupsd_client_t *con) /* I - Connection */
ef416fc2 3466{
321d8d57 3467 char filename[1024]; /* Configuration filename */
ef416fc2 3468 cups_file_t *in, /* Input file */
3469 *out; /* Output file */
321d8d57
MS		 3470 char buffer[16384]; /* Copy buffer */
3471 ssize_t bytes; /* Number of bytes */
ef416fc2 3472
3473
3474 /*
321d8d57 3475 * Open the request file...
ef416fc2 3476 */
3477
321d8d57 3478 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
ef416fc2 3479 {
321d8d57
MS		 3480 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\": %s",
3481 con->filename, strerror(errno));
3482 return (HTTP_SERVER_ERROR);
ef416fc2 3483 }
3484
3485 /*
321d8d57 3486 * Open the new config file...
ef416fc2 3487 */
3488
cb7f98ee 3489 if ((out = cupsdCreateConfFile(ConfigurationFile, ConfigFilePerm)) == NULL)
ef416fc2 3490 {
3491 cupsFileClose(in);
ef416fc2 3492 return (HTTP_SERVER_ERROR);
3493 }
3494
cb7f98ee
MS		 3495 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...",
3496 ConfigurationFile);
ef416fc2 3497
3498 /*
3499 * Copy from the request to the new config file...
3500 */
3501
3502 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
3503 if (cupsFileWrite(out, buffer, bytes) < bytes)
3504 {
3505 cupsdLogMessage(CUPSD_LOG_ERROR,
321d8d57 3506 "Unable to copy to config file \"%s\": %s",
cb7f98ee 3507 ConfigurationFile, strerror(errno));
ef416fc2 3508
3509 cupsFileClose(in);
3510 cupsFileClose(out);
321d8d57 3511
cb7f98ee
MS		 3512 snprintf(filename, sizeof(filename), "%s.N", ConfigurationFile);
3513 cupsdUnlinkOrRemoveFile(filename);
ef416fc2 3514
3515 return (HTTP_SERVER_ERROR);
3516 }
3517
3518 /*
3519 * Close the files...
3520 */
3521
3522 cupsFileClose(in);
ef416fc2 3523
cb7f98ee 3524 if (cupsdCloseCreatedConfFile(out, ConfigurationFile))
ef416fc2 3525 return (HTTP_SERVER_ERROR);
ef416fc2 3526
3527 /*
3528 * Remove the request file...
3529 */
3530
cb7f98ee 3531 cupsdUnlinkOrRemoveFile(con->filename);
ef416fc2 3532 cupsdClearString(&con->filename);
3533
ef416fc2 3534 /*
c41769ff 3535 * Set the NeedReload flag...
ef416fc2 3536 */
3537
c41769ff 3538 NeedReload = RELOAD_CUPSD;
ef416fc2 3539 ReloadTime = time(NULL);
3540
3541 /*
3542 * Return that the file was created successfully...
3543 */
3544
3545 return (HTTP_CREATED);
3546}
3547
3548
e1d6a774 3549/*
3550 * 'is_cgi()' - Is the resource a CGI script/program?
3551 */
3552
3553static int /* O - 1 = CGI, 0 = file */
3554is_cgi(cupsd_client_t *con, /* I - Client connection */
3555 const char *filename, /* I - Real filename */
3556 struct stat *filestats, /* I - File information */
3557 mime_type_t *type) /* I - MIME type */
3558{
3559 const char *options; /* Options on URL */
3560
3561
e1d6a774 3562 /*
3563 * Get the options, if any...
3564 */
3565
3566 if ((options = strchr(con->uri, '?')) != NULL)
a0f6818e
MS		 3567 {
3568 options ++;
3569 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", options);
3570 }
b86bc4cf 3571
e1d6a774 3572 /*
3573 * Check for known types...
3574 */
3575
88f9aafc 3576 if (!type || _cups_strcasecmp(type->super, "application"))
e1d6a774 3577 {
b9faaae1 3578 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3579 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3580 "type=%s/%s, returning 0", con->http.fd, filename,
3581 filestats, type ? type->super : "unknown",
b9faaae1 3582 type ? type->type : "unknown");
e1d6a774 3583 return (0);
3584 }
3585
88f9aafc 3586 if (!_cups_strcasecmp(type->type, "x-httpd-cgi") &&
e1d6a774 3587 (filestats->st_mode & 0111))
3588 {
3589 /*
3590 * "application/x-httpd-cgi" is a CGI script.
3591 */
3592
3593 cupsdSetString(&con->command, filename);
3594
a0f6818e
MS		 3595 if (options)
3596 cupsdSetStringf(&con->options, " %s", options);
e1d6a774 3597
3598 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3599 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3600 "type=%s/%s, returning 1", con->http.fd, filename,
3601 filestats, type->super, type->type);
e1d6a774 3602 return (1);
3603 }
3604#ifdef HAVE_JAVA
88f9aafc 3605 else if (!_cups_strcasecmp(type->type, "x-httpd-java"))
e1d6a774 3606 {
3607 /*
3608 * "application/x-httpd-java" is a Java servlet.
3609 */
3610
3611 cupsdSetString(&con->command, CUPS_JAVA);
3612
3613 if (options)
b94498cf 3614 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3615 else
b94498cf 3616 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3617
3618 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3619 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3620 "type=%s/%s, returning 1", con->http.fd, filename,
3621 filestats, type->super, type->type);
e1d6a774 3622 return (1);
3623 }
3624#endif /* HAVE_JAVA */
3625#ifdef HAVE_PERL
88f9aafc 3626 else if (!_cups_strcasecmp(type->type, "x-httpd-perl"))
e1d6a774 3627 {
3628 /*
3629 * "application/x-httpd-perl" is a Perl page.
3630 */
3631
3632 cupsdSetString(&con->command, CUPS_PERL);
3633
3634 if (options)
b94498cf 3635 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3636 else
b94498cf 3637 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3638
3639 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3640 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3641 "type=%s/%s, returning 1", con->http.fd, filename,
3642 filestats, type->super, type->type);
e1d6a774 3643 return (1);
3644 }
3645#endif /* HAVE_PERL */
3646#ifdef HAVE_PHP
88f9aafc 3647 else if (!_cups_strcasecmp(type->type, "x-httpd-php"))
e1d6a774 3648 {
3649 /*
3650 * "application/x-httpd-php" is a PHP page.
3651 */
3652
3653 cupsdSetString(&con->command, CUPS_PHP);
3654
3655 if (options)
b94498cf 3656 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3657 else
b94498cf 3658 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3659
3660 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3661 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3662 "type=%s/%s, returning 1", con->http.fd, filename,
3663 filestats, type->super, type->type);
e1d6a774 3664 return (1);
3665 }
3666#endif /* HAVE_PHP */
3667#ifdef HAVE_PYTHON
88f9aafc 3668 else if (!_cups_strcasecmp(type->type, "x-httpd-python"))
e1d6a774 3669 {
3670 /*
3671 * "application/x-httpd-python" is a Python page.
3672 */
3673
3674 cupsdSetString(&con->command, CUPS_PYTHON);
3675
3676 if (options)
b94498cf 3677 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3678 else
b94498cf 3679 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3680
3681 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3682 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3683 "type=%s/%s, returning 1", con->http.fd, filename,
3684 filestats, type->super, type->type);
e1d6a774 3685 return (1);
3686 }
3687#endif /* HAVE_PYTHON */
3688
b9faaae1 3689 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3690 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3691 "type=%s/%s, returning 0", con->http.fd, filename,
3692 filestats, type->super, type->type);
e1d6a774 3693 return (0);
3694}
3695
3696
ef416fc2 3697/*
3698 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3699 */
3700
3701static int /* O - 0 if relative, 1 if absolute */
3702is_path_absolute(const char *path) /* I - Input path */
3703{
3704 /*
3705 * Check for a leading slash...
3706 */
3707
3708 if (path[0] != '/')
3709 return (0);
3710
3711 /*
3712 * Check for "/.." in the path...
3713 */
3714
3715 while ((path = strstr(path, "/..")) != NULL)
3716 {
3717 if (!path[3] || path[3] == '/')
3718 return (0);
3719
3720 path ++;
3721 }
3722
3723 /*
3724 * If we haven't found any relative paths, return 1 indicating an
3725 * absolute path...
3726 */
3727
3728 return (1);
3729}
3730
3731
3732/*
3733 * 'pipe_command()' - Pipe the output of a command to the remote client.
3734 */
3735
3736static int /* O - Process ID */
3737pipe_command(cupsd_client_t *con, /* I - Client connection */
3738 int infile, /* I - Standard input for command */
3739 int *outfile, /* O - Standard output for command */
3740 char *command, /* I - Command to run */
3741 char *options, /* I - Options for command */
3742 int root) /* I - Run as root? */
3743{
3744 int i; /* Looping var */
3745 int pid; /* Process ID */
b423cd4c 3746 char *commptr, /* Command string pointer */
3747 commch; /* Command string character */
ef416fc2 3748 char *uriptr; /* URI string pointer */
3749 int fds[2]; /* Pipe FDs */
3750 int argc; /* Number of arguments */
3751 int envc; /* Number of environment variables */
3752 char argbuf[10240], /* Argument buffer */
3753 *argv[100], /* Argument strings */
b94498cf 3754 *envp[MAX_ENV + 20]; /* Environment variables */
c7017ecc 3755 char auth_type[256], /* AUTH_TYPE environment variable */
b94498cf 3756 content_length[1024], /* CONTENT_LENGTH environment variable */
ef416fc2 3757 content_type[1024], /* CONTENT_TYPE environment variable */
3758 http_cookie[32768], /* HTTP_COOKIE environment variable */
f7deaa1a 3759 http_referer[1024], /* HTTP_REFERER environment variable */
ef416fc2 3760 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3761 lang[1024], /* LANG environment variable */
b423cd4c 3762 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 3763 remote_addr[1024], /* REMOTE_ADDR environment variable */
3764 remote_host[1024], /* REMOTE_HOST environment variable */
3765 remote_user[1024], /* REMOTE_USER environment variable */
b94498cf 3766 script_filename[1024], /* SCRIPT_FILENAME environment variable */
ef416fc2 3767 script_name[1024], /* SCRIPT_NAME environment variable */
3768 server_name[1024], /* SERVER_NAME environment variable */
3769 server_port[1024]; /* SERVER_PORT environment variable */
7dfedb92 3770 ipp_attribute_t *attr; /* attributes-natural-language attribute */
ef416fc2 3771
3772
3773 /*
3774 * Parse a copy of the options string, which is of the form:
3775 *
b423cd4c 3776 * argument+argument+argument
3777 * ?argument+argument+argument
3778 * param=value&param=value
3779 * ?param=value&param=value
3780 * /name?argument+argument+argument
3781 * /name?param=value&param=value
ef416fc2 3782 *
3783 * If the string contains an "=" character after the initial name,
3784 * then we treat it as a HTTP GET form request and make a copy of
3785 * the remaining string for the environment variable.
3786 *
3787 * The string is always parsed out as command-line arguments, to
3788 * be consistent with Apache...
3789 */
3790
3791 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 3792 "[Client %d] pipe_command infile=%d, outfile=%p, "
3793 "command=\"%s\", options=\"%s\", root=%d",
3794 con->http.fd, infile, outfile, command,
b9faaae1 3795 options ? options : "(null)", root);
ef416fc2 3796
b86bc4cf 3797 argv[0] = command;
ef416fc2 3798
b423cd4c 3799 if (options)
c7017ecc
MS		 3800 {
3801 commptr = options;
3802 if (*commptr == ' ')
3803 commptr ++;
3804 strlcpy(argbuf, commptr, sizeof(argbuf));
3805 }
b423cd4c 3806 else
3807 argbuf[0] = '\0';
3808
3809 if (argbuf[0] == '/')
ef416fc2 3810 {
3811 /*
b423cd4c 3812 * Found some trailing path information, set PATH_INFO...
ef416fc2 3813 */
3814
b423cd4c 3815 if ((commptr = strchr(argbuf, '?')) == NULL)
3816 commptr = argbuf + strlen(argbuf);
ef416fc2 3817
b423cd4c 3818 commch = *commptr;
3819 *commptr = '\0';
3820 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
3821 *commptr = commch;
3822 }
3823 else
3824 {
3825 commptr = argbuf;
3826 path_info[0] = '\0';
b94498cf 3827
3828 if (*commptr == ' ')
3829 commptr ++;
b423cd4c 3830 }
ef416fc2 3831
cb7f98ee 3832 if (*commptr == '?' && con->operation == HTTP_STATE_GET && !con->query_string)
b423cd4c 3833 {
3834 commptr ++;
b86bc4cf 3835 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr);
b423cd4c 3836 }
ef416fc2 3837
b423cd4c 3838 argc = 1;
ef416fc2 3839
b423cd4c 3840 if (*commptr)
3841 {
3842 argv[argc ++] = commptr;
ef416fc2 3843
b423cd4c 3844 for (; *commptr && argc < 99; commptr ++)
3845 {
ef416fc2 3846 /*
b423cd4c 3847 * Break arguments whenever we see a + or space...
ef416fc2 3848 */
3849
b423cd4c 3850 if (*commptr == ' ' || *commptr == '+')
3851 {
3852 while (*commptr == ' ' || *commptr == '+')
3853 *commptr++ = '\0';
ef416fc2 3854
b423cd4c 3855 /*
3856 * If we don't have a blank string, save it as another argument...
3857 */
ef416fc2 3858
b423cd4c 3859 if (*commptr)
3860 {
3861 argv[argc] = commptr;
3862 argc ++;
3863 }
3864 else
3865 break;
3866 }
3867 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
3868 isxdigit(commptr[2] & 255))
3869 {
3870 /*
3871 * Convert the %xx notation to the individual character.
3872 */
ef416fc2 3873
b423cd4c 3874 if (commptr[1] >= '0' && commptr[1] <= '9')
3875 *commptr = (commptr[1] - '0') << 4;
3876 else
3877 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
ef416fc2 3878
b423cd4c 3879 if (commptr[2] >= '0' && commptr[2] <= '9')
3880 *commptr |= commptr[2] - '0';
3881 else
3882 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 3883
b423cd4c 3884 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 3885
b423cd4c 3886 /*
3887 * Check for a %00 and break if that is the case...
3888 */
ef416fc2 3889
b423cd4c 3890 if (!*commptr)
3891 break;
3892 }
ef416fc2 3893 }
3894 }
3895
3896 argv[argc] = NULL;
3897
ef416fc2 3898 /*
3899 * Setup the environment variables as needed...
3900 */
3901
b94498cf 3902 if (con->username[0])
3903 {
c7017ecc 3904 snprintf(auth_type, sizeof(auth_type), "AUTH_TYPE=%s",
b94498cf 3905 httpGetField(HTTP(con), HTTP_FIELD_AUTHORIZATION));
3906
3907 if ((uriptr = strchr(auth_type + 10, ' ')) != NULL)
3908 *uriptr = '\0';
3909 }
3910 else
3911 auth_type[0] = '\0';
3912
7dfedb92
MS		 3913 if (con->request &&
3914 (attr = ippFindAttribute(con->request, "attributes-natural-language",
3915 IPP_TAG_LANGUAGE)) != NULL)
3916 {
3917 switch (strlen(attr->values[0].string.text))
3918 {
3919 default :
3920 /*
3921 * This is an unknown or badly formatted language code; use
3922 * the POSIX locale...
3923 */
3924
5a9febac 3925 strlcpy(lang, "LANG=C", sizeof(lang));
7dfedb92
MS		 3926 break;
3927
3928 case 2 :
3929 /*
3930 * Just the language code (ll)...
3931 */
3932
3933 snprintf(lang, sizeof(lang), "LANG=%s.UTF8",
3934 attr->values[0].string.text);
3935 break;
3936
3937 case 5 :
3938 /*
3939 * Language and country code (ll-cc)...
3940 */
3941
3942 snprintf(lang, sizeof(lang), "LANG=%c%c_%c%c.UTF8",
3943 attr->values[0].string.text[0],
3944 attr->values[0].string.text[1],
3945 toupper(attr->values[0].string.text[3] & 255),
3946 toupper(attr->values[0].string.text[4] & 255));
3947 break;
3948 }
3949 }
3950 else if (con->language)
3951 snprintf(lang, sizeof(lang), "LANG=%s.UTF8", con->language->language);
ef416fc2 3952 else
5a9febac 3953 strlcpy(lang, "LANG=C", sizeof(lang));
ef416fc2 3954
5a9febac 3955 strlcpy(remote_addr, "REMOTE_ADDR=", sizeof(remote_addr));
ef416fc2 3956 httpAddrString(con->http.hostaddr, remote_addr + 12,
3957 sizeof(remote_addr) - 12);
3958
3959 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
3960 con->http.hostname);
3961
3962 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
3963 if ((uriptr = strchr(script_name, '?')) != NULL)
3964 *uriptr = '\0';
3965
b94498cf 3966 snprintf(script_filename, sizeof(script_filename), "SCRIPT_FILENAME=%s%s",
3967 DocumentRoot, script_name + 12);
3968
ef416fc2 3969 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
3970
0268488e
MS		 3971 if (con->http.fields[HTTP_FIELD_HOST][0])
3972 {
3973 char *nameptr; /* Pointer to ":port" */
3974
3975 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3976 con->http.fields[HTTP_FIELD_HOST]);
3977 if ((nameptr = strrchr(server_name, ':')) != NULL && !strchr(nameptr, ']'))
3978 *nameptr = '\0'; /* Strip trailing ":port" */
3979 }
3980 else
3981 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3982 con->servername);
ef416fc2 3983
3984 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
3985
b94498cf 3986 if (auth_type[0])
3987 envp[envc ++] = auth_type;
3988
ef416fc2 3989 envp[envc ++] = lang;
3990 envp[envc ++] = "REDIRECT_STATUS=1";
b94498cf 3991 envp[envc ++] = "GATEWAY_INTERFACE=CGI/1.1";
ef416fc2 3992 envp[envc ++] = server_name;
3993 envp[envc ++] = server_port;
3994 envp[envc ++] = remote_addr;
3995 envp[envc ++] = remote_host;
3996 envp[envc ++] = script_name;
b94498cf 3997 envp[envc ++] = script_filename;
ef416fc2 3998
b423cd4c 3999 if (path_info[0])
4000 envp[envc ++] = path_info;
4001
ef416fc2 4002 if (con->username[0])
4003 {
4004 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
4005
4006 envp[envc ++] = remote_user;
4007 }
4008
4009 if (con->http.version == HTTP_1_1)
4010 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
4011 else if (con->http.version == HTTP_1_0)
4012 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
4013 else
4014 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
4015
4016 if (con->http.cookie)
4017 {
4018 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
4019 con->http.cookie);
4020 envp[envc ++] = http_cookie;
4021 }
4022
4023 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
4024 {
4025 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
4026 con->http.fields[HTTP_FIELD_USER_AGENT]);
4027 envp[envc ++] = http_user_agent;
4028 }
4029
f7deaa1a 4030 if (con->http.fields[HTTP_FIELD_REFERER][0])
4031 {
4032 snprintf(http_referer, sizeof(http_referer), "HTTP_REFERER=%s",
4033 con->http.fields[HTTP_FIELD_REFERER]);
4034 envp[envc ++] = http_referer;
4035 }
4036
cb7f98ee 4037 if (con->operation == HTTP_STATE_GET)
ef416fc2 4038 {
ef416fc2 4039 envp[envc ++] = "REQUEST_METHOD=GET";
4040
b86bc4cf 4041 if (con->query_string)
ef416fc2 4042 {
4043 /*
4044 * Add GET form variables after ?...
4045 */
4046
b86bc4cf 4047 envp[envc ++] = con->query_string;
ef416fc2 4048 }
3dfe78b3
MS		 4049 else
4050 envp[envc ++] = "QUERY_STRING=";
ef416fc2 4051 }
4052 else
4053 {
e1d6a774 4054 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
4055 CUPS_LLCAST con->bytes);
ef416fc2 4056 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
4057 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
4058
4059 envp[envc ++] = "REQUEST_METHOD=POST";
4060 envp[envc ++] = content_length;
4061 envp[envc ++] = content_type;
4062 }
4063
4064 /*
4065 * Tell the CGI if we are using encryption...
4066 */
4067
a74454a7 4068 if (con->http.tls)
ef416fc2 4069 envp[envc ++] = "HTTPS=ON";
4070
4071 /*
4072 * Terminate the environment array...
4073 */
4074
4075 envp[envc] = NULL;
4076
38e73f87 4077 if (LogLevel >= CUPSD_LOG_DEBUG)
ef416fc2 4078 {
4079 for (i = 0; i < argc; i ++)
38e73f87
MS		 4080 cupsdLogMessage(CUPSD_LOG_DEBUG,
4081 "[CGI] argv[%d] = \"%s\"", i, argv[i]);
ef416fc2 4082 for (i = 0; i < envc; i ++)
38e73f87
MS		 4083 cupsdLogMessage(CUPSD_LOG_DEBUG,
4084 "[CGI] envp[%d] = \"%s\"", i, envp[i]);
ef416fc2 4085 }
4086
4087 /*
4088 * Create a pipe for the output...
4089 */
4090
4091 if (cupsdOpenPipe(fds))
4092 {
38e73f87 4093 cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to create pipe for %s - %s",
ef416fc2 4094 argv[0], strerror(errno));
4095 return (0);
4096 }
4097
4098 /*
4099 * Then execute the command...
4100 */
4101
4102 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
38e73f87 4103 -1, -1, root, DefaultProfile, NULL, &pid) < 0)
ef416fc2 4104 {
4105 /*
4106 * Error - can't fork!
4107 */
4108
38e73f87 4109 cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to start %s - %s", argv[0],
ef416fc2 4110 strerror(errno));
4111
4112 cupsdClosePipe(fds);
4113 pid = 0;
4114 }
4115 else
4116 {
4117 /*
4118 * Fork successful - return the PID...
4119 */
4120
4121 if (con->username[0])
0fa6c7fa 4122 cupsdAddCert(pid, con->username, con->type);
ef416fc2 4123
38e73f87 4124 cupsdLogMessage(CUPSD_LOG_DEBUG, "[CGI] Started %s (PID %d)", command, pid);
ef416fc2 4125
4126 *outfile = fds[0];
4127 close(fds[1]);
4128 }
4129
ef416fc2 4130 return (pid);
4131}
4132
4133
e07d4801
MS		 4134/*
4135 * 'valid_host()' - Is the Host: field valid?
4136 */
4137
4138static int /* O - 1 if valid, 0 if not */
4139valid_host(cupsd_client_t *con) /* I - Client connection */
4140{
4141 cupsd_alias_t *a; /* Current alias */
4142 cupsd_netif_t *netif; /* Current network interface */
f2534050
MS		 4143 const char *end; /* End character */
4144 char *ptr; /* Pointer into host value */
e07d4801
MS		 4145
4146
f2534050
MS		 4147 /*
4148 * Copy the Host: header for later use...
4149 */
4150
4151 strlcpy(con->clientname, con->http.fields[HTTP_FIELD_HOST],
4152 sizeof(con->clientname));
4153 if ((ptr = strrchr(con->clientname, ':')) != NULL && !strchr(ptr, ']'))
4154 {
4155 *ptr++ = '\0';
4156 con->clientport = atoi(ptr);
4157 }
4158 else
4159 con->clientport = con->serverport;
4160
4161 /*
4162 * Then validate...
4163 */
e07d4801
MS		 4164
4165 if (httpAddrLocalhost(con->http.hostaddr))
4166 {
4167 /*
4168 * Only allow "localhost" or the equivalent IPv4 or IPv6 numerical
4169 * addresses when accessing CUPS via the loopback interface...
4170 */
4171
f2534050
MS		 4172 return (!_cups_strcasecmp(con->clientname, "localhost") ||
4173 !_cups_strcasecmp(con->clientname, "localhost.") ||
e07d4801 4174#ifdef __linux
f2534050 4175 !_cups_strcasecmp(con->clientname, "localhost.localdomain") ||
e07d4801 4176#endif /* __linux */
f2534050
MS		 4177 !strcmp(con->clientname, "127.0.0.1") ||
4178 !strcmp(con->clientname, "[::1]"));
e07d4801
MS		 4179 }
4180
37e7e6e0 4181#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
e07d4801
MS		 4182 /*
4183 * Check if the hostname is something.local (Bonjour); if so, allow it.
4184 */
4185
f2534050
MS		 4186 if ((end = strrchr(con->clientname, '.')) != NULL && end > con->clientname &&
4187 !end[1])
a29fd7dd
MS		 4188 {
4189 /*
4190 * "." on end, work back to second-to-last "."...
4191 */
f2534050
MS		 4192
4193 for (end --; end > con->clientname && *end != '.'; end --);
a29fd7dd
MS		 4194 }
4195
4196 if (end && (!_cups_strcasecmp(end, ".local") ||
f2534050 4197 !_cups_strcasecmp(end, ".local.")))
e07d4801 4198 return (1);
37e7e6e0 4199#endif /* HAVE_DNSSD || HAVE_AVAHI */
e07d4801
MS		 4200
4201 /*
4202 * Check if the hostname is an IP address...
4203 */
4204
f2534050 4205 if (isdigit(con->clientname[0] & 255) || con->clientname[0] == '[')
e07d4801
MS		 4206 {
4207 /*
4208 * Possible IPv4/IPv6 address...
4209 */
4210
e07d4801
MS		 4211 http_addrlist_t *addrlist; /* List of addresses */
4212
4213
f2534050 4214 if ((addrlist = httpAddrGetList(con->clientname, AF_UNSPEC, NULL)) != NULL)
e07d4801
MS		 4215 {
4216 /*
4217 * Good IPv4/IPv6 address...
4218 */
4219
4220 httpAddrFreeList(addrlist);
4221 return (1);
4222 }
4223 }
4224
4225 /*
4226 * Check for (alias) name matches...
4227 */
4228
4229 for (a = (cupsd_alias_t *)cupsArrayFirst(ServerAlias);
4230 a;
4231 a = (cupsd_alias_t *)cupsArrayNext(ServerAlias))
4232 {
4233 /*
4234 * "ServerAlias *" allows all host values through...
4235 */
4236
4237 if (!strcmp(a->name, "*"))
4238 return (1);
4239
f2534050 4240 if (!_cups_strncasecmp(con->clientname, a->name, a->namelen))
e07d4801
MS		 4241 {
4242 /*
f2534050 4243 * Prefix matches; check the character at the end - it must be "." or nul.
e07d4801
MS		 4244 */
4245
f2534050 4246 end = con->clientname + a->namelen;
e07d4801 4247
f2534050 4248 if (!*end || (*end == '.' && !end[1]))
e07d4801
MS		 4249 return (1);
4250 }
4251 }
4252
37e7e6e0 4253#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
e07d4801
MS		 4254 for (a = (cupsd_alias_t *)cupsArrayFirst(DNSSDAlias);
4255 a;
4256 a = (cupsd_alias_t *)cupsArrayNext(DNSSDAlias))
4257 {
4258 /*
4259 * "ServerAlias *" allows all host values through...
4260 */
4261
4262 if (!strcmp(a->name, "*"))
4263 return (1);
4264
f2534050 4265 if (!_cups_strncasecmp(con->clientname, a->name, a->namelen))
e07d4801
MS		 4266 {
4267 /*
f2534050 4268 * Prefix matches; check the character at the end - it must be "." or nul.
e07d4801
MS		 4269 */
4270
f2534050 4271 end = con->clientname + a->namelen;
e07d4801 4272
f2534050 4273 if (!*end || (*end == '.' && !end[1]))
e07d4801
MS		 4274 return (1);
4275 }
4276 }
37e7e6e0 4277#endif /* HAVE_DNSSD || HAVE_AVAHI */
e07d4801
MS		 4278
4279 /*
4280 * Check for interface hostname matches...
4281 */
4282
4283 for (netif = (cupsd_netif_t *)cupsArrayFirst(NetIFList);
4284 netif;
4285 netif = (cupsd_netif_t *)cupsArrayNext(NetIFList))
4286 {
f2534050 4287 if (!_cups_strncasecmp(con->clientname, netif->hostname, netif->hostlen))
e07d4801
MS		 4288 {
4289 /*
f2534050 4290 * Prefix matches; check the character at the end - it must be "." or nul.
e07d4801
MS		 4291 */
4292
f2534050 4293 end = con->clientname + netif->hostlen;
e07d4801 4294
f2534050 4295 if (!*end || (*end == '.' && !end[1]))
e07d4801
MS		 4296 return (1);
4297 }
4298 }
4299
4300 return (0);
4301}
4302
4303
ef416fc2 4304/*
a74454a7 4305 * 'write_file()' - Send a file via HTTP.
e1d6a774 4306 */
4307
4308static int /* O - 0 on failure, 1 on success */
a74454a7 4309write_file(cupsd_client_t *con, /* I - Client connection */
4310 http_status_t code, /* I - HTTP status */
4311 char *filename, /* I - Filename */
4312 char *type, /* I - File type */
4313 struct stat *filestats) /* O - File information */
e1d6a774 4314{
4315 con->file = open(filename, O_RDONLY);
4316
b9faaae1 4317 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 4318 "[Client %d] write_file code=%d, filename=\"%s\" (%d), "
4319 "type=\"%s\", filestats=%p", con->http.fd,
b9faaae1 4320 code, filename, con->file, type ? type : "(null)", filestats);
e1d6a774 4321
4322 if (con->file < 0)
4323 return (0);
4324
4325 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
4326
4327 con->pipe_pid = 0;
4328
5bd77a73 4329 if (!cupsdSendHeader(con, code, type, CUPSD_AUTH_NONE))
e1d6a774 4330 return (0);
4331
4332 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
4333 httpGetDateString(filestats->st_mtime)) < 0)
4334 return (0);
4335 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
4336 CUPS_LLCAST filestats->st_size) < 0)
4337 return (0);
4338 if (httpPrintf(HTTP(con), "\r\n") < 0)
4339 return (0);
4340
07725fee 4341 if (cupsdFlushHeader(con) < 0)
4342 return (0);
d09495fa 4343
cb7f98ee 4344 con->http.data_encoding = HTTP_ENCODING_LENGTH;
e1d6a774 4345 con->http.data_remaining = filestats->st_size;
4346
4347 if (con->http.data_remaining <= INT_MAX)
4348 con->http._data_remaining = con->http.data_remaining;
4349 else
4350 con->http._data_remaining = INT_MAX;
4351
f7deaa1a 4352 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient,
4353 (cupsd_selfunc_t)cupsdWriteClient, con);
e1d6a774 4354
1bc82dd9
MS		 4355 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] Sending file.", con->http.fd);
4356
e1d6a774 4357 return (1);
4358}
4359
4360
4361/*
f899b121 4362 * 'write_pipe()' - Flag that data is available on the CGI pipe.
4363 */
4364
4365static void
4366write_pipe(cupsd_client_t *con) /* I - Client connection */
4367{
b9faaae1 4368 cupsdLogMessage(CUPSD_LOG_DEBUG2,
85dda01c
MS		 4369 "[Client %d] write_pipe CGI output on fd %d",
4370 con->http.fd, con->file);
f899b121 4371
4372 con->file_ready = 1;
4373
4374 cupsdRemoveSelect(con->file);
4375 cupsdAddSelect(con->http.fd, NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
1bc82dd9
MS		 4376
4377 cupsdLogMessage(CUPSD_LOG_DEBUG, "[Client %d] CGI data ready to be sent.",
4378 con->http.fd);
f899b121 4379}
4380
4381
4382/*
f2d18633 4383 * End of "$Id$".
ef416fc2 4384 */
Unnamed repository; edit this file 'description' to name the repository.