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1 | /* | |
2 | * "$Id$" | |
3 | * | |
4 | * Client routines for the CUPS scheduler. | |
5 | * | |
6 | * Copyright 2007-2013 by Apple Inc. | |
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. | |
11 | * | |
12 | * These coded instructions, statements, and computer programs are the | |
13 | * property of Apple Inc. and are protected by Federal copyright | |
14 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
15 | * which should have been included with this file. If this file is | |
16 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
17 | */ | |
18 | ||
19 | /* | |
20 | * Include necessary headers... | |
21 | */ | |
22 | ||
23 | #define _CUPS_NO_DEPRECATED | |
24 | #define _HTTP_NO_PRIVATE | |
25 | #include "cupsd.h" | |
26 | ||
27 | #ifdef __APPLE__ | |
28 | # include <libproc.h> | |
29 | #endif /* __APPLE__ */ | |
30 | #ifdef HAVE_TCPD_H | |
31 | # include <tcpd.h> | |
32 | #endif /* HAVE_TCPD_H */ | |
33 | ||
34 | ||
35 | /* | |
36 | * Local functions... | |
37 | */ | |
38 | ||
39 | static int check_if_modified(cupsd_client_t *con, | |
40 | struct stat *filestats); | |
41 | static int compare_clients(cupsd_client_t *a, cupsd_client_t *b, | |
42 | void *data); | |
43 | #ifdef HAVE_SSL | |
44 | static int cupsd_start_tls(cupsd_client_t *con, http_encryption_t e); | |
45 | #endif /* HAVE_SSL */ | |
46 | static char *get_file(cupsd_client_t *con, struct stat *filestats, | |
47 | char *filename, int len); | |
48 | static http_status_t install_cupsd_conf(cupsd_client_t *con); | |
49 | static int is_cgi(cupsd_client_t *con, const char *filename, | |
50 | struct stat *filestats, mime_type_t *type); | |
51 | static int is_path_absolute(const char *path); | |
52 | static int pipe_command(cupsd_client_t *con, int infile, int *outfile, | |
53 | char *command, char *options, int root); | |
54 | static int valid_host(cupsd_client_t *con); | |
55 | static int write_file(cupsd_client_t *con, http_status_t code, | |
56 | char *filename, char *type, | |
57 | struct stat *filestats); | |
58 | static void write_pipe(cupsd_client_t *con); | |
59 | ||
60 | ||
61 | /* | |
62 | * 'cupsdAcceptClient()' - Accept a new client. | |
63 | */ | |
64 | ||
65 | void | |
66 | cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */ | |
67 | { | |
68 | const char *hostname; /* Hostname of client */ | |
69 | char name[256]; /* Hostname of client */ | |
70 | int count; /* Count of connections on a host */ | |
71 | cupsd_client_t *con, /* New client pointer */ | |
72 | *tempcon; /* Temporary client pointer */ | |
73 | socklen_t addrlen; /* Length of address */ | |
74 | http_addr_t temp; /* Temporary address variable */ | |
75 | static time_t last_dos = 0; /* Time of last DoS attack */ | |
76 | #ifdef HAVE_TCPD_H | |
77 | struct request_info wrap_req; /* TCP wrappers request information */ | |
78 | #endif /* HAVE_TCPD_H */ | |
79 | ||
80 | ||
81 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
82 | "cupsdAcceptClient(lis=%p(%d)) Clients=%d", | |
83 | lis, lis->fd, cupsArrayCount(Clients)); | |
84 | ||
85 | /* | |
86 | * Make sure we don't have a full set of clients already... | |
87 | */ | |
88 | ||
89 | if (cupsArrayCount(Clients) == MaxClients) | |
90 | return; | |
91 | ||
92 | /* | |
93 | * Get a pointer to the next available client... | |
94 | */ | |
95 | ||
96 | if (!Clients) | |
97 | Clients = cupsArrayNew(NULL, NULL); | |
98 | ||
99 | if (!Clients) | |
100 | { | |
101 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
102 | "Unable to allocate memory for clients array!"); | |
103 | cupsdPauseListening(); | |
104 | return; | |
105 | } | |
106 | ||
107 | if (!ActiveClients) | |
108 | ActiveClients = cupsArrayNew((cups_array_func_t)compare_clients, NULL); | |
109 | ||
110 | if (!ActiveClients) | |
111 | { | |
112 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
113 | "Unable to allocate memory for active clients array!"); | |
114 | cupsdPauseListening(); | |
115 | return; | |
116 | } | |
117 | ||
118 | if ((con = calloc(1, sizeof(cupsd_client_t))) == NULL) | |
119 | { | |
120 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to allocate memory for client!"); | |
121 | cupsdPauseListening(); | |
122 | return; | |
123 | } | |
124 | ||
125 | /* | |
126 | * Accept the client and get the remote address... | |
127 | */ | |
128 | ||
129 | con->number = ++ LastClientNumber; | |
130 | con->file = -1; | |
131 | ||
132 | if ((con->http = httpAcceptConnection(lis->fd, 0)) == NULL) | |
133 | { | |
134 | if (errno == ENFILE || errno == EMFILE) | |
135 | cupsdPauseListening(); | |
136 | ||
137 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.", | |
138 | strerror(errno)); | |
139 | free(con); | |
140 | ||
141 | return; | |
142 | } | |
143 | ||
144 | /* | |
145 | * Save the connected address and port number... | |
146 | */ | |
147 | ||
148 | con->clientaddr = lis->address; | |
149 | ||
150 | /* | |
151 | * Check the number of clients on the same address... | |
152 | */ | |
153 | ||
154 | for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients); | |
155 | tempcon; | |
156 | tempcon = (cupsd_client_t *)cupsArrayNext(Clients)) | |
157 | if (httpAddrEqual(httpGetAddress(tempcon->http), httpGetAddress(con->http))) | |
158 | { | |
159 | count ++; | |
160 | if (count >= MaxClientsPerHost) | |
161 | break; | |
162 | } | |
163 | ||
164 | if (count >= MaxClientsPerHost) | |
165 | { | |
166 | if ((time(NULL) - last_dos) >= 60) | |
167 | { | |
168 | last_dos = time(NULL); | |
169 | cupsdLogMessage(CUPSD_LOG_WARN, | |
170 | "Possible DoS attack - more than %d clients connecting " | |
171 | "from %s.", | |
172 | MaxClientsPerHost, | |
173 | httpGetHostname(con->http, name, sizeof(name))); | |
174 | } | |
175 | ||
176 | httpClose(con->http); | |
177 | free(con); | |
178 | return; | |
179 | } | |
180 | ||
181 | /* | |
182 | * Get the hostname or format the IP address as needed... | |
183 | */ | |
184 | ||
185 | if (HostNameLookups) | |
186 | hostname = httpResolveHostname(con->http, NULL, 0); | |
187 | else | |
188 | hostname = httpGetHostname(con->http, NULL, 0); | |
189 | ||
190 | if (hostname == NULL && HostNameLookups == 2) | |
191 | { | |
192 | /* | |
193 | * Can't have an unresolved IP address with double-lookups enabled... | |
194 | */ | |
195 | ||
196 | httpClose(con->http); | |
197 | ||
198 | cupsdLogClient(con, CUPSD_LOG_WARN, | |
199 | "Name lookup failed - connection from %s closed!", | |
200 | httpGetHostname(con->http, NULL, 0)); | |
201 | ||
202 | free(con); | |
203 | return; | |
204 | } | |
205 | ||
206 | if (HostNameLookups == 2) | |
207 | { | |
208 | /* | |
209 | * Do double lookups as needed... | |
210 | */ | |
211 | ||
212 | http_addrlist_t *addrlist, /* List of addresses */ | |
213 | *addr; /* Current address */ | |
214 | ||
215 | if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, NULL)) != NULL) | |
216 | { | |
217 | /* | |
218 | * See if the hostname maps to the same IP address... | |
219 | */ | |
220 | ||
221 | for (addr = addrlist; addr; addr = addr->next) | |
222 | if (httpAddrEqual(httpGetAddress(con->http), &(addr->addr))) | |
223 | break; | |
224 | } | |
225 | else | |
226 | addr = NULL; | |
227 | ||
228 | httpAddrFreeList(addrlist); | |
229 | ||
230 | if (!addr) | |
231 | { | |
232 | /* | |
233 | * Can't have a hostname that doesn't resolve to the same IP address | |
234 | * with double-lookups enabled... | |
235 | */ | |
236 | ||
237 | httpClose(con->http); | |
238 | ||
239 | cupsdLogClient(con, CUPSD_LOG_WARN, | |
240 | "IP lookup failed - connection from %s closed!", | |
241 | httpGetHostname(con->http, NULL, 0)); | |
242 | free(con); | |
243 | return; | |
244 | } | |
245 | } | |
246 | ||
247 | #ifdef HAVE_TCPD_H | |
248 | /* | |
249 | * See if the connection is denied by TCP wrappers... | |
250 | */ | |
251 | ||
252 | request_init(&wrap_req, RQ_DAEMON, "cupsd", RQ_FILE, httpGetFd(con->http), | |
253 | NULL); | |
254 | fromhost(&wrap_req); | |
255 | ||
256 | if (!hosts_access(&wrap_req)) | |
257 | { | |
258 | httpClose(con->http); | |
259 | ||
260 | cupsdLogClient(con, CUPSD_LOG_WARN, | |
261 | "Connection from %s refused by /etc/hosts.allow and " | |
262 | "/etc/hosts.deny rules.", httpGetHostname(con->http, NULL, 0)); | |
263 | free(con); | |
264 | return; | |
265 | } | |
266 | #endif /* HAVE_TCPD_H */ | |
267 | ||
268 | #ifdef AF_LOCAL | |
269 | if (httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL) | |
270 | { | |
271 | # ifdef __APPLE__ | |
272 | socklen_t peersize; /* Size of peer credentials */ | |
273 | pid_t peerpid; /* Peer process ID */ | |
274 | char peername[256]; /* Name of process */ | |
275 | ||
276 | peersize = sizeof(peerpid); | |
277 | if (!getsockopt(con->number, SOL_LOCAL, LOCAL_PEERPID, &peerpid, | |
278 | &peersize)) | |
279 | { | |
280 | if (!proc_name(peerpid, peername, sizeof(peername))) | |
281 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
282 | "Accepted from %s (Domain ???[%d])", | |
283 | httpGetHostname(con->http, NULL, 0), (int)peerpid); | |
284 | else | |
285 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
286 | "Accepted from %s (Domain %s[%d])", | |
287 | httpGetHostname(con->http, NULL, 0), name, (int)peerpid); | |
288 | } | |
289 | else | |
290 | # endif /* __APPLE__ */ | |
291 | ||
292 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Accepted from %s (Domain)", | |
293 | httpGetHostname(con->http, NULL, 0)); | |
294 | } | |
295 | else | |
296 | #endif /* AF_LOCAL */ | |
297 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Accepted from %s:%d (IPv%d)", | |
298 | httpGetHostname(con->http, NULL, 0), | |
299 | httpAddrPort(httpGetAddress(con->http)), | |
300 | httpAddrFamily(httpGetAddress(con->http)) == AF_INET ? 4 : 6); | |
301 | ||
302 | /* | |
303 | * Get the local address the client connected to... | |
304 | */ | |
305 | ||
306 | addrlen = sizeof(temp); | |
307 | if (getsockname(httpGetFd(con->http), (struct sockaddr *)&temp, &addrlen)) | |
308 | { | |
309 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to get local address - %s", | |
310 | strerror(errno)); | |
311 | ||
312 | strlcpy(con->servername, "localhost", sizeof(con->servername)); | |
313 | con->serverport = LocalPort; | |
314 | } | |
315 | #ifdef AF_LOCAL | |
316 | else if (httpAddrFamily(&temp) == AF_LOCAL) | |
317 | { | |
318 | strlcpy(con->servername, "localhost", sizeof(con->servername)); | |
319 | con->serverport = LocalPort; | |
320 | } | |
321 | #endif /* AF_LOCAL */ | |
322 | else | |
323 | { | |
324 | if (httpAddrLocalhost(&temp)) | |
325 | strlcpy(con->servername, "localhost", sizeof(con->servername)); | |
326 | else if (HostNameLookups) | |
327 | httpAddrLookup(&temp, con->servername, sizeof(con->servername)); | |
328 | else | |
329 | httpAddrString(&temp, con->servername, sizeof(con->servername)); | |
330 | ||
331 | con->serverport = httpAddrPort(&(lis->address)); | |
332 | } | |
333 | ||
334 | /* | |
335 | * Add the connection to the array of active clients... | |
336 | */ | |
337 | ||
338 | cupsArrayAdd(Clients, con); | |
339 | ||
340 | /* | |
341 | * Add the socket to the server select. | |
342 | */ | |
343 | ||
344 | cupsdAddSelect(httpGetFd(con->http), (cupsd_selfunc_t)cupsdReadClient, NULL, | |
345 | con); | |
346 | ||
347 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for request."); | |
348 | ||
349 | /* | |
350 | * Temporarily suspend accept()'s until we lose a client... | |
351 | */ | |
352 | ||
353 | if (cupsArrayCount(Clients) == MaxClients) | |
354 | cupsdPauseListening(); | |
355 | ||
356 | #ifdef HAVE_SSL | |
357 | /* | |
358 | * See if we are connecting on a secure port... | |
359 | */ | |
360 | ||
361 | if (lis->encryption == HTTP_ENCRYPTION_ALWAYS) | |
362 | { | |
363 | /* | |
364 | * https connection; go secure... | |
365 | */ | |
366 | ||
367 | if (cupsd_start_tls(con, HTTP_ENCRYPTION_ALWAYS)) | |
368 | cupsdCloseClient(con); | |
369 | } | |
370 | else | |
371 | con->auto_ssl = 1; | |
372 | #endif /* HAVE_SSL */ | |
373 | } | |
374 | ||
375 | ||
376 | /* | |
377 | * 'cupsdCloseAllClients()' - Close all remote clients immediately. | |
378 | */ | |
379 | ||
380 | void | |
381 | cupsdCloseAllClients(void) | |
382 | { | |
383 | cupsd_client_t *con; /* Current client */ | |
384 | ||
385 | ||
386 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdCloseAllClients() Clients=%d", | |
387 | cupsArrayCount(Clients)); | |
388 | ||
389 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); | |
390 | con; | |
391 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
392 | if (cupsdCloseClient(con)) | |
393 | cupsdCloseClient(con); | |
394 | } | |
395 | ||
396 | ||
397 | /* | |
398 | * 'cupsdCloseClient()' - Close a remote client. | |
399 | */ | |
400 | ||
401 | int /* O - 1 if partial close, 0 if fully closed */ | |
402 | cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */ | |
403 | { | |
404 | int partial; /* Do partial close for SSL? */ | |
405 | ||
406 | ||
407 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing connection."); | |
408 | ||
409 | /* | |
410 | * Flush pending writes before closing... | |
411 | */ | |
412 | ||
413 | httpFlushWrite(con->http); | |
414 | ||
415 | partial = 0; | |
416 | ||
417 | if (con->pipe_pid != 0) | |
418 | { | |
419 | /* | |
420 | * Stop any CGI process... | |
421 | */ | |
422 | ||
423 | cupsdEndProcess(con->pipe_pid, 1); | |
424 | con->pipe_pid = 0; | |
425 | } | |
426 | ||
427 | if (con->file >= 0) | |
428 | { | |
429 | cupsdRemoveSelect(con->file); | |
430 | ||
431 | close(con->file); | |
432 | con->file = -1; | |
433 | } | |
434 | ||
435 | /* | |
436 | * Close the socket and clear the file from the input set for select()... | |
437 | */ | |
438 | ||
439 | if (httpGetFd(con->http) >= 0) | |
440 | { | |
441 | cupsArrayRemove(ActiveClients, con); | |
442 | cupsdSetBusyState(); | |
443 | ||
444 | #ifdef HAVE_SSL | |
445 | /* | |
446 | * Shutdown encryption as needed... | |
447 | */ | |
448 | ||
449 | if (httpIsEncrypted(con->http)) | |
450 | partial = 1; | |
451 | #endif /* HAVE_SSL */ | |
452 | ||
453 | if (partial) | |
454 | { | |
455 | /* | |
456 | * Only do a partial close so that the encrypted client gets everything. | |
457 | */ | |
458 | ||
459 | httpShutdown(con->http); | |
460 | cupsdAddSelect(httpGetFd(con->http), (cupsd_selfunc_t)cupsdReadClient, | |
461 | NULL, con); | |
462 | ||
463 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for socket close."); | |
464 | } | |
465 | else | |
466 | { | |
467 | /* | |
468 | * Shut the socket down fully... | |
469 | */ | |
470 | ||
471 | cupsdRemoveSelect(httpGetFd(con->http)); | |
472 | httpClose(con->http); | |
473 | con->http = NULL; | |
474 | } | |
475 | } | |
476 | ||
477 | if (!partial) | |
478 | { | |
479 | /* | |
480 | * Free memory... | |
481 | */ | |
482 | ||
483 | cupsdRemoveSelect(httpGetFd(con->http)); | |
484 | ||
485 | httpClose(con->http); | |
486 | ||
487 | cupsdClearString(&con->filename); | |
488 | cupsdClearString(&con->command); | |
489 | cupsdClearString(&con->options); | |
490 | cupsdClearString(&con->query_string); | |
491 | ||
492 | if (con->request) | |
493 | { | |
494 | ippDelete(con->request); | |
495 | con->request = NULL; | |
496 | } | |
497 | ||
498 | if (con->response) | |
499 | { | |
500 | ippDelete(con->response); | |
501 | con->response = NULL; | |
502 | } | |
503 | ||
504 | if (con->language) | |
505 | { | |
506 | cupsLangFree(con->language); | |
507 | con->language = NULL; | |
508 | } | |
509 | ||
510 | #ifdef HAVE_AUTHORIZATION_H | |
511 | if (con->authref) | |
512 | { | |
513 | AuthorizationFree(con->authref, kAuthorizationFlagDefaults); | |
514 | con->authref = NULL; | |
515 | } | |
516 | #endif /* HAVE_AUTHORIZATION_H */ | |
517 | ||
518 | /* | |
519 | * Re-enable new client connections if we are going back under the | |
520 | * limit... | |
521 | */ | |
522 | ||
523 | if (cupsArrayCount(Clients) == MaxClients) | |
524 | cupsdResumeListening(); | |
525 | ||
526 | /* | |
527 | * Compact the list of clients as necessary... | |
528 | */ | |
529 | ||
530 | cupsArrayRemove(Clients, con); | |
531 | ||
532 | free(con); | |
533 | } | |
534 | ||
535 | return (partial); | |
536 | } | |
537 | ||
538 | ||
539 | /* | |
540 | * 'cupsdReadClient()' - Read data from a client. | |
541 | */ | |
542 | ||
543 | void | |
544 | cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */ | |
545 | { | |
546 | char line[32768], /* Line from client... */ | |
547 | locale[64], /* Locale */ | |
548 | *ptr; /* Pointer into strings */ | |
549 | http_status_t status; /* Transfer status */ | |
550 | ipp_state_t ipp_state; /* State of IPP transfer */ | |
551 | int bytes; /* Number of bytes to POST */ | |
552 | char *filename; /* Name of file for GET/HEAD */ | |
553 | char buf[1024]; /* Buffer for real filename */ | |
554 | struct stat filestats; /* File information */ | |
555 | mime_type_t *type; /* MIME type of file */ | |
556 | cupsd_printer_t *p; /* Printer */ | |
557 | static unsigned request_id = 0; /* Request ID for temp files */ | |
558 | ||
559 | ||
560 | status = HTTP_STATUS_CONTINUE; | |
561 | ||
562 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
563 | "cupsdReadClient " | |
564 | "error=%d, " | |
565 | "used=%d, " | |
566 | "state=%s, " | |
567 | "data_encoding=HTTP_ENCODING_%s, " | |
568 | "data_remaining=" CUPS_LLFMT ", " | |
569 | "request=%p(%s), " | |
570 | "file=%d", | |
571 | httpError(con->http), (int)httpGetReady(con->http), | |
572 | httpStateString(httpGetState(con->http)), | |
573 | httpIsChunked(con->http) ? "CHUNKED" : "LENGTH", | |
574 | CUPS_LLCAST httpGetRemaining(con->http), | |
575 | con->request, | |
576 | con->request ? ippStateString(ippGetState(con->request)) : "", | |
577 | con->file); | |
578 | ||
579 | if (httpGetState(con->http) == HTTP_STATE_GET_SEND || | |
580 | httpGetState(con->http) == HTTP_STATE_POST_SEND || | |
581 | httpGetState(con->http) == HTTP_STATE_STATUS) | |
582 | { | |
583 | /* | |
584 | * If we get called in the wrong state, then something went wrong with the | |
585 | * connection and we need to shut it down... | |
586 | */ | |
587 | ||
588 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on unexpected HTTP read state %s.", | |
589 | httpStateString(httpGetState(con->http))); | |
590 | cupsdCloseClient(con); | |
591 | return; | |
592 | } | |
593 | ||
594 | #ifdef HAVE_SSL | |
595 | if (con->auto_ssl) | |
596 | { | |
597 | /* | |
598 | * Automatically check for a SSL/TLS handshake... | |
599 | */ | |
600 | ||
601 | con->auto_ssl = 0; | |
602 | ||
603 | if (recv(httpGetFd(con->http), buf, 1, MSG_PEEK) == 1 && | |
604 | (!buf[0] || !strchr("DGHOPT", buf[0]))) | |
605 | { | |
606 | /* | |
607 | * Encrypt this connection... | |
608 | */ | |
609 | ||
610 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
611 | "Saw first byte %02X, auto-negotiating " | |
612 | "SSL/TLS session.", buf[0] & 255); | |
613 | ||
614 | if (cupsd_start_tls(con, HTTP_ENCRYPTION_ALWAYS)) | |
615 | cupsdCloseClient(con); | |
616 | ||
617 | return; | |
618 | } | |
619 | } | |
620 | #endif /* HAVE_SSL */ | |
621 | ||
622 | switch (httpGetState(con->http)) | |
623 | { | |
624 | case HTTP_STATE_WAITING : | |
625 | /* | |
626 | * See if we've received a request line... | |
627 | */ | |
628 | ||
629 | con->operation = httpReadRequest(con->http, con->uri, sizeof(con->uri)); | |
630 | if (con->operation == HTTP_STATE_ERROR || | |
631 | con->operation == HTTP_STATE_UNKNOWN_METHOD || | |
632 | con->operation == HTTP_STATE_UNKNOWN_VERSION) | |
633 | { | |
634 | if (httpError(con->http)) | |
635 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
636 | "HTTP_STATE_WAITING Closing for error %d (%s)", | |
637 | httpError(con->http), strerror(httpError(con->http))); | |
638 | else | |
639 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
640 | "HTTP_STATE_WAITING Closing on error: %s", | |
641 | cupsLastErrorString()); | |
642 | ||
643 | cupsdCloseClient(con); | |
644 | return; | |
645 | } | |
646 | ||
647 | /* | |
648 | * Ignore blank request lines... | |
649 | */ | |
650 | ||
651 | if (con->operation == HTTP_STATE_WAITING) | |
652 | break; | |
653 | ||
654 | /* | |
655 | * Clear other state variables... | |
656 | */ | |
657 | ||
658 | con->bytes = 0; | |
659 | con->file = -1; | |
660 | con->file_ready = 0; | |
661 | con->pipe_pid = 0; | |
662 | con->username[0] = '\0'; | |
663 | con->password[0] = '\0'; | |
664 | ||
665 | cupsdClearString(&con->command); | |
666 | cupsdClearString(&con->options); | |
667 | cupsdClearString(&con->query_string); | |
668 | ||
669 | if (con->request) | |
670 | { | |
671 | ippDelete(con->request); | |
672 | con->request = NULL; | |
673 | } | |
674 | ||
675 | if (con->response) | |
676 | { | |
677 | ippDelete(con->response); | |
678 | con->response = NULL; | |
679 | } | |
680 | ||
681 | if (con->language) | |
682 | { | |
683 | cupsLangFree(con->language); | |
684 | con->language = NULL; | |
685 | } | |
686 | ||
687 | #ifdef HAVE_GSSAPI | |
688 | con->have_gss = 0; | |
689 | con->gss_uid = 0; | |
690 | #endif /* HAVE_GSSAPI */ | |
691 | ||
692 | /* | |
693 | * Handle full URLs in the request line... | |
694 | */ | |
695 | ||
696 | if (strcmp(con->uri, "*")) | |
697 | { | |
698 | char scheme[HTTP_MAX_URI], /* Method/scheme */ | |
699 | userpass[HTTP_MAX_URI], /* Username:password */ | |
700 | hostname[HTTP_MAX_URI], /* Hostname */ | |
701 | resource[HTTP_MAX_URI]; /* Resource path */ | |
702 | int port; /* Port number */ | |
703 | ||
704 | /* | |
705 | * Separate the URI into its components... | |
706 | */ | |
707 | ||
708 | if (httpSeparateURI(HTTP_URI_CODING_MOST, con->uri, | |
709 | scheme, sizeof(scheme), | |
710 | userpass, sizeof(userpass), | |
711 | hostname, sizeof(hostname), &port, | |
712 | resource, sizeof(resource)) < HTTP_URI_STATUS_OK) | |
713 | { | |
714 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Bad URI \"%s\" in request.", | |
715 | con->uri); | |
716 | cupsdSendError(con, HTTP_STATUS_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE); | |
717 | cupsdCloseClient(con); | |
718 | return; | |
719 | } | |
720 | ||
721 | /* | |
722 | * Only allow URIs with the servername, localhost, or an IP | |
723 | * address... | |
724 | */ | |
725 | ||
726 | if (strcmp(scheme, "file") && | |
727 | _cups_strcasecmp(hostname, ServerName) && | |
728 | _cups_strcasecmp(hostname, "localhost") && | |
729 | !cupsArrayFind(ServerAlias, hostname) && | |
730 | !isdigit(hostname[0]) && hostname[0] != '[') | |
731 | { | |
732 | /* | |
733 | * Nope, we don't do proxies... | |
734 | */ | |
735 | ||
736 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Bad URI \"%s\" in request.", | |
737 | con->uri); | |
738 | cupsdSendError(con, HTTP_STATUS_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE); | |
739 | cupsdCloseClient(con); | |
740 | return; | |
741 | } | |
742 | ||
743 | /* | |
744 | * Copy the resource portion back into the URI; both resource and | |
745 | * con->uri are HTTP_MAX_URI bytes in size... | |
746 | */ | |
747 | ||
748 | strlcpy(con->uri, resource, sizeof(con->uri)); | |
749 | } | |
750 | ||
751 | /* | |
752 | * Process the request... | |
753 | */ | |
754 | ||
755 | gettimeofday(&(con->start), NULL); | |
756 | ||
757 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "%s %s HTTP/%d.%d", | |
758 | httpStateString(con->operation) + 11, con->uri, | |
759 | httpGetVersion(con->http) / 100, | |
760 | httpGetVersion(con->http) % 100); | |
761 | ||
762 | if (!cupsArrayFind(ActiveClients, con)) | |
763 | { | |
764 | cupsArrayAdd(ActiveClients, con); | |
765 | cupsdSetBusyState(); | |
766 | } | |
767 | ||
768 | case HTTP_STATE_OPTIONS : | |
769 | case HTTP_STATE_DELETE : | |
770 | case HTTP_STATE_GET : | |
771 | case HTTP_STATE_HEAD : | |
772 | case HTTP_STATE_POST : | |
773 | case HTTP_STATE_PUT : | |
774 | case HTTP_STATE_TRACE : | |
775 | /* | |
776 | * Parse incoming parameters until the status changes... | |
777 | */ | |
778 | ||
779 | while ((status = httpUpdate(con->http)) == HTTP_STATUS_CONTINUE) | |
780 | if (!httpGetReady(con->http)) | |
781 | break; | |
782 | ||
783 | if (status != HTTP_STATUS_OK && status != HTTP_STATUS_CONTINUE) | |
784 | { | |
785 | if (httpError(con->http) && httpError(con->http) != EPIPE) | |
786 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
787 | "Closing for error %d (%s) while reading headers.", | |
788 | httpError(con->http), strerror(httpError(con->http))); | |
789 | else | |
790 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
791 | "Closing on EOF while reading headers."); | |
792 | ||
793 | cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE); | |
794 | cupsdCloseClient(con); | |
795 | return; | |
796 | } | |
797 | break; | |
798 | ||
799 | default : | |
800 | if (!httpGetReady(con->http) && recv(httpGetFd(con->http), buf, 1, MSG_PEEK) < 1) | |
801 | { | |
802 | /* | |
803 | * Connection closed... | |
804 | */ | |
805 | ||
806 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on EOF."); | |
807 | cupsdCloseClient(con); | |
808 | return; | |
809 | } | |
810 | break; /* Anti-compiler-warning-code */ | |
811 | } | |
812 | ||
813 | /* | |
814 | * Handle new transfers... | |
815 | */ | |
816 | ||
817 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Read: status=%d", status); | |
818 | ||
819 | if (status == HTTP_STATUS_OK) | |
820 | { | |
821 | if (httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE)[0]) | |
822 | { | |
823 | /* | |
824 | * Figure out the locale from the Accept-Language and Content-Type | |
825 | * fields... | |
826 | */ | |
827 | ||
828 | if ((ptr = strchr(httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE), | |
829 | ',')) != NULL) | |
830 | *ptr = '\0'; | |
831 | ||
832 | if ((ptr = strchr(httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE), | |
833 | ';')) != NULL) | |
834 | *ptr = '\0'; | |
835 | ||
836 | if ((ptr = strstr(httpGetField(con->http, HTTP_FIELD_CONTENT_TYPE), | |
837 | "charset=")) != NULL) | |
838 | { | |
839 | /* | |
840 | * Combine language and charset, and trim any extra params in the | |
841 | * content-type. | |
842 | */ | |
843 | ||
844 | snprintf(locale, sizeof(locale), "%s.%s", | |
845 | httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE), ptr + 8); | |
846 | ||
847 | if ((ptr = strchr(locale, ',')) != NULL) | |
848 | *ptr = '\0'; | |
849 | } | |
850 | else | |
851 | snprintf(locale, sizeof(locale), "%s.UTF-8", | |
852 | httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE)); | |
853 | ||
854 | con->language = cupsLangGet(locale); | |
855 | } | |
856 | else | |
857 | con->language = cupsLangGet(DefaultLocale); | |
858 | ||
859 | cupsdAuthorize(con); | |
860 | ||
861 | if (!_cups_strncasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION), | |
862 | "Keep-Alive", 10) && KeepAlive) | |
863 | httpSetKeepAlive(con->http, HTTP_KEEPALIVE_ON); | |
864 | else if (!_cups_strncasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION), | |
865 | "close", 5)) | |
866 | httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF); | |
867 | ||
868 | if (!httpGetField(con->http, HTTP_FIELD_HOST)[0] && | |
869 | httpGetVersion(con->http) >= HTTP_VERSION_1_1) | |
870 | { | |
871 | /* | |
872 | * HTTP/1.1 and higher require the "Host:" field... | |
873 | */ | |
874 | ||
875 | if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE)) | |
876 | { | |
877 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Missing Host: field in request."); | |
878 | cupsdCloseClient(con); | |
879 | return; | |
880 | } | |
881 | } | |
882 | else if (!valid_host(con)) | |
883 | { | |
884 | /* | |
885 | * Access to localhost must use "localhost" or the corresponding IPv4 | |
886 | * or IPv6 values in the Host: field. | |
887 | */ | |
888 | ||
889 | cupsdLogClient(con, CUPSD_LOG_ERROR, | |
890 | "Request from \"%s\" using invalid Host: field \"%s\".", | |
891 | httpGetHostname(con->http, NULL, 0), httpGetField(con->http, HTTP_FIELD_HOST)); | |
892 | ||
893 | if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE)) | |
894 | { | |
895 | cupsdCloseClient(con); | |
896 | return; | |
897 | } | |
898 | } | |
899 | else if (con->operation == HTTP_STATE_OPTIONS) | |
900 | { | |
901 | /* | |
902 | * Do OPTIONS command... | |
903 | */ | |
904 | ||
905 | if (con->best && con->best->type != CUPSD_AUTH_NONE) | |
906 | { | |
907 | httpClearFields(con->http); | |
908 | ||
909 | if (!cupsdSendHeader(con, HTTP_STATUS_UNAUTHORIZED, NULL, CUPSD_AUTH_NONE)) | |
910 | { | |
911 | cupsdCloseClient(con); | |
912 | return; | |
913 | } | |
914 | } | |
915 | ||
916 | if (!_cups_strcasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION), "Upgrade") && strstr(httpGetField(con->http, HTTP_FIELD_UPGRADE), "TLS/") != NULL && !httpIsEncrypted(con->http)) | |
917 | { | |
918 | #ifdef HAVE_SSL | |
919 | /* | |
920 | * Do encryption stuff... | |
921 | */ | |
922 | ||
923 | httpClearFields(con->http); | |
924 | ||
925 | if (!cupsdSendHeader(con, HTTP_STATUS_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE)) | |
926 | { | |
927 | cupsdCloseClient(con); | |
928 | return; | |
929 | } | |
930 | ||
931 | if (cupsd_start_tls(con, HTTP_ENCRYPTION_REQUIRED)) | |
932 | { | |
933 | cupsdCloseClient(con); | |
934 | return; | |
935 | } | |
936 | #else | |
937 | if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE)) | |
938 | { | |
939 | cupsdCloseClient(con); | |
940 | return; | |
941 | } | |
942 | #endif /* HAVE_SSL */ | |
943 | } | |
944 | ||
945 | httpClearFields(con->http); | |
946 | httpSetField(con->http, HTTP_FIELD_ALLOW, | |
947 | "GET, HEAD, OPTIONS, POST, PUT"); | |
948 | httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0"); | |
949 | ||
950 | if (!cupsdSendHeader(con, HTTP_STATUS_OK, NULL, CUPSD_AUTH_NONE)) | |
951 | { | |
952 | cupsdCloseClient(con); | |
953 | return; | |
954 | } | |
955 | } | |
956 | else if (!is_path_absolute(con->uri)) | |
957 | { | |
958 | /* | |
959 | * Protect against malicious users! | |
960 | */ | |
961 | ||
962 | cupsdLogClient(con, CUPSD_LOG_ERROR, | |
963 | "Request for non-absolute resource \"%s\".", con->uri); | |
964 | ||
965 | if (!cupsdSendError(con, HTTP_STATUS_FORBIDDEN, CUPSD_AUTH_NONE)) | |
966 | { | |
967 | cupsdCloseClient(con); | |
968 | return; | |
969 | } | |
970 | } | |
971 | else | |
972 | { | |
973 | if (!_cups_strcasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION), | |
974 | "Upgrade") && !httpIsEncrypted(con->http)) | |
975 | { | |
976 | #ifdef HAVE_SSL | |
977 | /* | |
978 | * Do encryption stuff... | |
979 | */ | |
980 | ||
981 | httpClearFields(con->http); | |
982 | ||
983 | if (!cupsdSendHeader(con, HTTP_STATUS_SWITCHING_PROTOCOLS, NULL, | |
984 | CUPSD_AUTH_NONE)) | |
985 | { | |
986 | cupsdCloseClient(con); | |
987 | return; | |
988 | } | |
989 | ||
990 | if (cupsd_start_tls(con, HTTP_ENCRYPTION_REQUIRED)) | |
991 | { | |
992 | cupsdCloseClient(con); | |
993 | return; | |
994 | } | |
995 | #else | |
996 | if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE)) | |
997 | { | |
998 | cupsdCloseClient(con); | |
999 | return; | |
1000 | } | |
1001 | #endif /* HAVE_SSL */ | |
1002 | } | |
1003 | ||
1004 | if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_STATUS_OK) | |
1005 | { | |
1006 | cupsdSendError(con, status, CUPSD_AUTH_NONE); | |
1007 | cupsdCloseClient(con); | |
1008 | return; | |
1009 | } | |
1010 | ||
1011 | if (httpGetExpect(con->http) && | |
1012 | (con->operation == HTTP_STATE_POST || con->operation == HTTP_STATE_PUT)) | |
1013 | { | |
1014 | if (httpGetExpect(con->http) == HTTP_STATUS_CONTINUE) | |
1015 | { | |
1016 | /* | |
1017 | * Send 100-continue header... | |
1018 | */ | |
1019 | ||
1020 | if (httpWriteResponse(con->http, HTTP_STATUS_CONTINUE)) | |
1021 | { | |
1022 | cupsdCloseClient(con); | |
1023 | return; | |
1024 | } | |
1025 | } | |
1026 | else | |
1027 | { | |
1028 | /* | |
1029 | * Send 417-expectation-failed header... | |
1030 | */ | |
1031 | ||
1032 | httpClearFields(con->http); | |
1033 | httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0"); | |
1034 | ||
1035 | cupsdSendError(con, HTTP_STATUS_EXPECTATION_FAILED, CUPSD_AUTH_NONE); | |
1036 | cupsdCloseClient(con); | |
1037 | return; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | switch (httpGetState(con->http)) | |
1042 | { | |
1043 | case HTTP_STATE_GET_SEND : | |
1044 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Processing GET %s", con->uri); | |
1045 | ||
1046 | if ((!strncmp(con->uri, "/ppd/", 5) || | |
1047 | !strncmp(con->uri, "/printers/", 10) || | |
1048 | !strncmp(con->uri, "/classes/", 9)) && | |
1049 | !strcmp(con->uri + strlen(con->uri) - 4, ".ppd")) | |
1050 | { | |
1051 | /* | |
1052 | * Send PPD file - get the real printer name since printer | |
1053 | * names are not case sensitive but filenames can be... | |
1054 | */ | |
1055 | ||
1056 | con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */ | |
1057 | ||
1058 | if (!strncmp(con->uri, "/ppd/", 5)) | |
1059 | p = cupsdFindPrinter(con->uri + 5); | |
1060 | else if (!strncmp(con->uri, "/printers/", 10)) | |
1061 | p = cupsdFindPrinter(con->uri + 10); | |
1062 | else | |
1063 | { | |
1064 | p = cupsdFindClass(con->uri + 9); | |
1065 | ||
1066 | if (p) | |
1067 | { | |
1068 | int i; /* Looping var */ | |
1069 | ||
1070 | for (i = 0; i < p->num_printers; i ++) | |
1071 | { | |
1072 | if (!(p->printers[i]->type & CUPS_PRINTER_CLASS)) | |
1073 | { | |
1074 | char ppdname[1024];/* PPD filename */ | |
1075 | ||
1076 | snprintf(ppdname, sizeof(ppdname), "%s/ppd/%s.ppd", | |
1077 | ServerRoot, p->printers[i]->name); | |
1078 | if (!access(ppdname, 0)) | |
1079 | { | |
1080 | p = p->printers[i]; | |
1081 | break; | |
1082 | } | |
1083 | } | |
1084 | } | |
1085 | ||
1086 | if (i >= p->num_printers) | |
1087 | p = NULL; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | if (p) | |
1092 | { | |
1093 | snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name); | |
1094 | } | |
1095 | else | |
1096 | { | |
1097 | if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE)) | |
1098 | { | |
1099 | cupsdCloseClient(con); | |
1100 | return; | |
1101 | } | |
1102 | ||
1103 | break; | |
1104 | } | |
1105 | } | |
1106 | else if ((!strncmp(con->uri, "/icons/", 7) || | |
1107 | !strncmp(con->uri, "/printers/", 10) || | |
1108 | !strncmp(con->uri, "/classes/", 9)) && | |
1109 | !strcmp(con->uri + strlen(con->uri) - 4, ".png")) | |
1110 | { | |
1111 | /* | |
1112 | * Send icon file - get the real queue name since queue names are | |
1113 | * not case sensitive but filenames can be... | |
1114 | */ | |
1115 | ||
1116 | con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".png" */ | |
1117 | ||
1118 | if (!strncmp(con->uri, "/icons/", 7)) | |
1119 | p = cupsdFindPrinter(con->uri + 7); | |
1120 | else if (!strncmp(con->uri, "/printers/", 10)) | |
1121 | p = cupsdFindPrinter(con->uri + 10); | |
1122 | else | |
1123 | { | |
1124 | p = cupsdFindClass(con->uri + 9); | |
1125 | ||
1126 | if (p) | |
1127 | { | |
1128 | int i; /* Looping var */ | |
1129 | ||
1130 | for (i = 0; i < p->num_printers; i ++) | |
1131 | { | |
1132 | if (!(p->printers[i]->type & CUPS_PRINTER_CLASS)) | |
1133 | { | |
1134 | char ppdname[1024];/* PPD filename */ | |
1135 | ||
1136 | snprintf(ppdname, sizeof(ppdname), "%s/ppd/%s.ppd", | |
1137 | ServerRoot, p->printers[i]->name); | |
1138 | if (!access(ppdname, 0)) | |
1139 | { | |
1140 | p = p->printers[i]; | |
1141 | break; | |
1142 | } | |
1143 | } | |
1144 | } | |
1145 | ||
1146 | if (i >= p->num_printers) | |
1147 | p = NULL; | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | if (p) | |
1152 | snprintf(con->uri, sizeof(con->uri), "/icons/%s.png", p->name); | |
1153 | else | |
1154 | { | |
1155 | if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE)) | |
1156 | { | |
1157 | cupsdCloseClient(con); | |
1158 | return; | |
1159 | } | |
1160 | ||
1161 | break; | |
1162 | } | |
1163 | } | |
1164 | else if (!WebInterface) | |
1165 | { | |
1166 | /* | |
1167 | * Web interface is disabled. Show an appropriate message... | |
1168 | */ | |
1169 | ||
1170 | if (!cupsdSendError(con, HTTP_STATUS_CUPS_WEBIF_DISABLED, CUPSD_AUTH_NONE)) | |
1171 | { | |
1172 | cupsdCloseClient(con); | |
1173 | return; | |
1174 | } | |
1175 | ||
1176 | break; | |
1177 | } | |
1178 | ||
1179 | if ((!strncmp(con->uri, "/admin", 6) && | |
1180 | strncmp(con->uri, "/admin/conf/", 12) && | |
1181 | strncmp(con->uri, "/admin/log/", 11)) || | |
1182 | !strncmp(con->uri, "/printers", 9) || | |
1183 | !strncmp(con->uri, "/classes", 8) || | |
1184 | !strncmp(con->uri, "/help", 5) || | |
1185 | !strncmp(con->uri, "/jobs", 5)) | |
1186 | { | |
1187 | /* | |
1188 | * Send CGI output... | |
1189 | */ | |
1190 | ||
1191 | if (!strncmp(con->uri, "/admin", 6)) | |
1192 | { | |
1193 | cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi", | |
1194 | ServerBin); | |
1195 | ||
1196 | cupsdSetString(&con->options, strchr(con->uri + 6, '?')); | |
1197 | } | |
1198 | else if (!strncmp(con->uri, "/printers", 9)) | |
1199 | { | |
1200 | cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi", | |
1201 | ServerBin); | |
1202 | ||
1203 | if (con->uri[9] && con->uri[10]) | |
1204 | cupsdSetString(&con->options, con->uri + 9); | |
1205 | else | |
1206 | cupsdSetString(&con->options, NULL); | |
1207 | } | |
1208 | else if (!strncmp(con->uri, "/classes", 8)) | |
1209 | { | |
1210 | cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi", | |
1211 | ServerBin); | |
1212 | ||
1213 | if (con->uri[8] && con->uri[9]) | |
1214 | cupsdSetString(&con->options, con->uri + 8); | |
1215 | else | |
1216 | cupsdSetString(&con->options, NULL); | |
1217 | } | |
1218 | else if (!strncmp(con->uri, "/jobs", 5)) | |
1219 | { | |
1220 | cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi", | |
1221 | ServerBin); | |
1222 | ||
1223 | if (con->uri[5] && con->uri[6]) | |
1224 | cupsdSetString(&con->options, con->uri + 5); | |
1225 | else | |
1226 | cupsdSetString(&con->options, NULL); | |
1227 | } | |
1228 | else | |
1229 | { | |
1230 | cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi", | |
1231 | ServerBin); | |
1232 | ||
1233 | if (con->uri[5] && con->uri[6]) | |
1234 | cupsdSetString(&con->options, con->uri + 5); | |
1235 | else | |
1236 | cupsdSetString(&con->options, NULL); | |
1237 | } | |
1238 | ||
1239 | if (!cupsdSendCommand(con, con->command, con->options, 0)) | |
1240 | { | |
1241 | if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE)) | |
1242 | { | |
1243 | cupsdCloseClient(con); | |
1244 | return; | |
1245 | } | |
1246 | } | |
1247 | else | |
1248 | cupsdLogRequest(con, HTTP_STATUS_OK); | |
1249 | ||
1250 | if (httpGetVersion(con->http) <= HTTP_VERSION_1_0) | |
1251 | httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF); | |
1252 | } | |
1253 | else if ((!strncmp(con->uri, "/admin/conf/", 12) && | |
1254 | (strchr(con->uri + 12, '/') || | |
1255 | strlen(con->uri) == 12)) || | |
1256 | (!strncmp(con->uri, "/admin/log/", 11) && | |
1257 | (strchr(con->uri + 11, '/') || | |
1258 | strlen(con->uri) == 11))) | |
1259 | { | |
1260 | /* | |
1261 | * GET can only be done to configuration files directly under | |
1262 | * /admin/conf... | |
1263 | */ | |
1264 | ||
1265 | cupsdLogClient(con, CUPSD_LOG_ERROR, | |
1266 | "Request for subdirectory \"%s\"!", con->uri); | |
1267 | ||
1268 | if (!cupsdSendError(con, HTTP_STATUS_FORBIDDEN, CUPSD_AUTH_NONE)) | |
1269 | { | |
1270 | cupsdCloseClient(con); | |
1271 | return; | |
1272 | } | |
1273 | ||
1274 | break; | |
1275 | } | |
1276 | else | |
1277 | { | |
1278 | /* | |
1279 | * Serve a file... | |
1280 | */ | |
1281 | ||
1282 | if ((filename = get_file(con, &filestats, buf, | |
1283 | sizeof(buf))) == NULL) | |
1284 | { | |
1285 | if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE)) | |
1286 | { | |
1287 | cupsdCloseClient(con); | |
1288 | return; | |
1289 | } | |
1290 | ||
1291 | break; | |
1292 | } | |
1293 | ||
1294 | type = mimeFileType(MimeDatabase, filename, NULL, NULL); | |
1295 | ||
1296 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "filename=\"%s\", type=%s/%s", filename, type ? type->super : "", type ? type->type : ""); | |
1297 | ||
1298 | if (is_cgi(con, filename, &filestats, type)) | |
1299 | { | |
1300 | /* | |
1301 | * Note: con->command and con->options were set by | |
1302 | * is_cgi()... | |
1303 | */ | |
1304 | ||
1305 | if (!cupsdSendCommand(con, con->command, con->options, 0)) | |
1306 | { | |
1307 | if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE)) | |
1308 | { | |
1309 | cupsdCloseClient(con); | |
1310 | return; | |
1311 | } | |
1312 | } | |
1313 | else | |
1314 | cupsdLogRequest(con, HTTP_STATUS_OK); | |
1315 | ||
1316 | if (httpGetVersion(con->http) <= HTTP_VERSION_1_0) | |
1317 | httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF); | |
1318 | break; | |
1319 | } | |
1320 | ||
1321 | if (!check_if_modified(con, &filestats)) | |
1322 | { | |
1323 | if (!cupsdSendError(con, HTTP_STATUS_NOT_MODIFIED, CUPSD_AUTH_NONE)) | |
1324 | { | |
1325 | cupsdCloseClient(con); | |
1326 | return; | |
1327 | } | |
1328 | } | |
1329 | else | |
1330 | { | |
1331 | if (type == NULL) | |
1332 | strlcpy(line, "text/plain", sizeof(line)); | |
1333 | else | |
1334 | snprintf(line, sizeof(line), "%s/%s", type->super, type->type); | |
1335 | ||
1336 | if (!write_file(con, HTTP_STATUS_OK, filename, line, &filestats)) | |
1337 | { | |
1338 | cupsdCloseClient(con); | |
1339 | return; | |
1340 | } | |
1341 | } | |
1342 | } | |
1343 | break; | |
1344 | ||
1345 | case HTTP_STATE_POST_RECV : | |
1346 | /* | |
1347 | * See if the POST request includes a Content-Length field, and if | |
1348 | * so check the length against any limits that are set... | |
1349 | */ | |
1350 | ||
1351 | if (httpGetField(con->http, HTTP_FIELD_CONTENT_LENGTH)[0] && | |
1352 | MaxRequestSize > 0 && | |
1353 | httpGetLength2(con->http) > MaxRequestSize) | |
1354 | { | |
1355 | /* | |
1356 | * Request too large... | |
1357 | */ | |
1358 | ||
1359 | if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE)) | |
1360 | { | |
1361 | cupsdCloseClient(con); | |
1362 | return; | |
1363 | } | |
1364 | ||
1365 | break; | |
1366 | } | |
1367 | else if (httpGetLength2(con->http) < 0) | |
1368 | { | |
1369 | /* | |
1370 | * Negative content lengths are invalid! | |
1371 | */ | |
1372 | ||
1373 | if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE)) | |
1374 | { | |
1375 | cupsdCloseClient(con); | |
1376 | return; | |
1377 | } | |
1378 | ||
1379 | break; | |
1380 | } | |
1381 | ||
1382 | /* | |
1383 | * See what kind of POST request this is; for IPP requests the | |
1384 | * content-type field will be "application/ipp"... | |
1385 | */ | |
1386 | ||
1387 | if (!strcmp(httpGetField(con->http, HTTP_FIELD_CONTENT_TYPE), | |
1388 | "application/ipp")) | |
1389 | con->request = ippNew(); | |
1390 | else if (!WebInterface) | |
1391 | { | |
1392 | /* | |
1393 | * Web interface is disabled. Show an appropriate message... | |
1394 | */ | |
1395 | ||
1396 | if (!cupsdSendError(con, HTTP_STATUS_CUPS_WEBIF_DISABLED, CUPSD_AUTH_NONE)) | |
1397 | { | |
1398 | cupsdCloseClient(con); | |
1399 | return; | |
1400 | } | |
1401 | ||
1402 | break; | |
1403 | } | |
1404 | else if ((!strncmp(con->uri, "/admin", 6) && | |
1405 | strncmp(con->uri, "/admin/conf/", 12) && | |
1406 | strncmp(con->uri, "/admin/log/", 11)) || | |
1407 | !strncmp(con->uri, "/printers", 9) || | |
1408 | !strncmp(con->uri, "/classes", 8) || | |
1409 | !strncmp(con->uri, "/help", 5) || | |
1410 | !strncmp(con->uri, "/jobs", 5)) | |
1411 | { | |
1412 | /* | |
1413 | * CGI request... | |
1414 | */ | |
1415 | ||
1416 | if (!strncmp(con->uri, "/admin", 6)) | |
1417 | { | |
1418 | cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi", | |
1419 | ServerBin); | |
1420 | ||
1421 | cupsdSetString(&con->options, strchr(con->uri + 6, '?')); | |
1422 | } | |
1423 | else if (!strncmp(con->uri, "/printers", 9)) | |
1424 | { | |
1425 | cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi", | |
1426 | ServerBin); | |
1427 | ||
1428 | if (con->uri[9] && con->uri[10]) | |
1429 | cupsdSetString(&con->options, con->uri + 9); | |
1430 | else | |
1431 | cupsdSetString(&con->options, NULL); | |
1432 | } | |
1433 | else if (!strncmp(con->uri, "/classes", 8)) | |
1434 | { | |
1435 | cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi", | |
1436 | ServerBin); | |
1437 | ||
1438 | if (con->uri[8] && con->uri[9]) | |
1439 | cupsdSetString(&con->options, con->uri + 8); | |
1440 | else | |
1441 | cupsdSetString(&con->options, NULL); | |
1442 | } | |
1443 | else if (!strncmp(con->uri, "/jobs", 5)) | |
1444 | { | |
1445 | cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi", | |
1446 | ServerBin); | |
1447 | ||
1448 | if (con->uri[5] && con->uri[6]) | |
1449 | cupsdSetString(&con->options, con->uri + 5); | |
1450 | else | |
1451 | cupsdSetString(&con->options, NULL); | |
1452 | } | |
1453 | else | |
1454 | { | |
1455 | cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi", | |
1456 | ServerBin); | |
1457 | ||
1458 | if (con->uri[5] && con->uri[6]) | |
1459 | cupsdSetString(&con->options, con->uri + 5); | |
1460 | else | |
1461 | cupsdSetString(&con->options, NULL); | |
1462 | } | |
1463 | ||
1464 | if (httpGetVersion(con->http) <= HTTP_VERSION_1_0) | |
1465 | httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF); | |
1466 | } | |
1467 | else | |
1468 | { | |
1469 | /* | |
1470 | * POST to a file... | |
1471 | */ | |
1472 | ||
1473 | if ((filename = get_file(con, &filestats, buf, | |
1474 | sizeof(buf))) == NULL) | |
1475 | { | |
1476 | if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE)) | |
1477 | { | |
1478 | cupsdCloseClient(con); | |
1479 | return; | |
1480 | } | |
1481 | ||
1482 | break; | |
1483 | } | |
1484 | ||
1485 | type = mimeFileType(MimeDatabase, filename, NULL, NULL); | |
1486 | ||
1487 | if (!is_cgi(con, filename, &filestats, type)) | |
1488 | { | |
1489 | /* | |
1490 | * Only POST to CGI's... | |
1491 | */ | |
1492 | ||
1493 | if (!cupsdSendError(con, HTTP_STATUS_UNAUTHORIZED, CUPSD_AUTH_NONE)) | |
1494 | { | |
1495 | cupsdCloseClient(con); | |
1496 | return; | |
1497 | } | |
1498 | } | |
1499 | } | |
1500 | break; | |
1501 | ||
1502 | case HTTP_STATE_PUT_RECV : | |
1503 | /* | |
1504 | * Validate the resource name... | |
1505 | */ | |
1506 | ||
1507 | if (strcmp(con->uri, "/admin/conf/cupsd.conf")) | |
1508 | { | |
1509 | /* | |
1510 | * PUT can only be done to the cupsd.conf file... | |
1511 | */ | |
1512 | ||
1513 | cupsdLogClient(con, CUPSD_LOG_ERROR, | |
1514 | "Disallowed PUT request for \"%s\".", con->uri); | |
1515 | ||
1516 | if (!cupsdSendError(con, HTTP_STATUS_FORBIDDEN, CUPSD_AUTH_NONE)) | |
1517 | { | |
1518 | cupsdCloseClient(con); | |
1519 | return; | |
1520 | } | |
1521 | ||
1522 | break; | |
1523 | } | |
1524 | ||
1525 | /* | |
1526 | * See if the PUT request includes a Content-Length field, and if | |
1527 | * so check the length against any limits that are set... | |
1528 | */ | |
1529 | ||
1530 | if (httpGetField(con->http, HTTP_FIELD_CONTENT_LENGTH)[0] && | |
1531 | MaxRequestSize > 0 && | |
1532 | httpGetLength2(con->http) > MaxRequestSize) | |
1533 | { | |
1534 | /* | |
1535 | * Request too large... | |
1536 | */ | |
1537 | ||
1538 | if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE)) | |
1539 | { | |
1540 | cupsdCloseClient(con); | |
1541 | return; | |
1542 | } | |
1543 | ||
1544 | break; | |
1545 | } | |
1546 | else if (httpGetLength2(con->http) < 0) | |
1547 | { | |
1548 | /* | |
1549 | * Negative content lengths are invalid! | |
1550 | */ | |
1551 | ||
1552 | if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE)) | |
1553 | { | |
1554 | cupsdCloseClient(con); | |
1555 | return; | |
1556 | } | |
1557 | ||
1558 | break; | |
1559 | } | |
1560 | ||
1561 | /* | |
1562 | * Open a temporary file to hold the request... | |
1563 | */ | |
1564 | ||
1565 | cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, | |
1566 | request_id ++); | |
1567 | con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640); | |
1568 | ||
1569 | if (con->file < 0) | |
1570 | { | |
1571 | cupsdLogClient(con, CUPSD_LOG_ERROR, | |
1572 | "Unable to create request file \"%s\": %s", | |
1573 | con->filename, strerror(errno)); | |
1574 | ||
1575 | if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE)) | |
1576 | { | |
1577 | cupsdCloseClient(con); | |
1578 | return; | |
1579 | } | |
1580 | } | |
1581 | ||
1582 | fchmod(con->file, 0640); | |
1583 | fchown(con->file, RunUser, Group); | |
1584 | fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC); | |
1585 | break; | |
1586 | ||
1587 | case HTTP_STATE_DELETE : | |
1588 | case HTTP_STATE_TRACE : | |
1589 | cupsdSendError(con, HTTP_STATUS_NOT_IMPLEMENTED, CUPSD_AUTH_NONE); | |
1590 | cupsdCloseClient(con); | |
1591 | return; | |
1592 | ||
1593 | case HTTP_STATE_HEAD : | |
1594 | if (!strncmp(con->uri, "/printers/", 10) && | |
1595 | !strcmp(con->uri + strlen(con->uri) - 4, ".ppd")) | |
1596 | { | |
1597 | /* | |
1598 | * Send PPD file - get the real printer name since printer | |
1599 | * names are not case sensitive but filenames can be... | |
1600 | */ | |
1601 | ||
1602 | con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */ | |
1603 | ||
1604 | if ((p = cupsdFindPrinter(con->uri + 10)) != NULL) | |
1605 | snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name); | |
1606 | else | |
1607 | { | |
1608 | if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE)) | |
1609 | { | |
1610 | cupsdCloseClient(con); | |
1611 | return; | |
1612 | } | |
1613 | ||
1614 | cupsdLogRequest(con, HTTP_STATUS_NOT_FOUND); | |
1615 | break; | |
1616 | } | |
1617 | } | |
1618 | else if (!strncmp(con->uri, "/printers/", 10) && | |
1619 | !strcmp(con->uri + strlen(con->uri) - 4, ".png")) | |
1620 | { | |
1621 | /* | |
1622 | * Send PNG file - get the real printer name since printer | |
1623 | * names are not case sensitive but filenames can be... | |
1624 | */ | |
1625 | ||
1626 | con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */ | |
1627 | ||
1628 | if ((p = cupsdFindPrinter(con->uri + 10)) != NULL) | |
1629 | snprintf(con->uri, sizeof(con->uri), "/icons/%s.png", p->name); | |
1630 | else | |
1631 | { | |
1632 | if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE)) | |
1633 | { | |
1634 | cupsdCloseClient(con); | |
1635 | return; | |
1636 | } | |
1637 | ||
1638 | cupsdLogRequest(con, HTTP_STATUS_NOT_FOUND); | |
1639 | break; | |
1640 | } | |
1641 | } | |
1642 | else if (!WebInterface) | |
1643 | { | |
1644 | httpClearFields(con->http); | |
1645 | ||
1646 | if (!cupsdSendHeader(con, HTTP_STATUS_OK, NULL, CUPSD_AUTH_NONE)) | |
1647 | { | |
1648 | cupsdCloseClient(con); | |
1649 | return; | |
1650 | } | |
1651 | ||
1652 | cupsdLogRequest(con, HTTP_STATUS_OK); | |
1653 | break; | |
1654 | } | |
1655 | ||
1656 | if ((!strncmp(con->uri, "/admin", 6) && | |
1657 | strncmp(con->uri, "/admin/conf/", 12) && | |
1658 | strncmp(con->uri, "/admin/log/", 11)) || | |
1659 | !strncmp(con->uri, "/printers", 9) || | |
1660 | !strncmp(con->uri, "/classes", 8) || | |
1661 | !strncmp(con->uri, "/help", 5) || | |
1662 | !strncmp(con->uri, "/jobs", 5)) | |
1663 | { | |
1664 | /* | |
1665 | * CGI output... | |
1666 | */ | |
1667 | ||
1668 | httpClearFields(con->http); | |
1669 | ||
1670 | if (!cupsdSendHeader(con, HTTP_STATUS_OK, "text/html", CUPSD_AUTH_NONE)) | |
1671 | { | |
1672 | cupsdCloseClient(con); | |
1673 | return; | |
1674 | } | |
1675 | ||
1676 | cupsdLogRequest(con, HTTP_STATUS_OK); | |
1677 | } | |
1678 | else if ((!strncmp(con->uri, "/admin/conf/", 12) && | |
1679 | (strchr(con->uri + 12, '/') || | |
1680 | strlen(con->uri) == 12)) || | |
1681 | (!strncmp(con->uri, "/admin/log/", 11) && | |
1682 | (strchr(con->uri + 11, '/') || | |
1683 | strlen(con->uri) == 11))) | |
1684 | { | |
1685 | /* | |
1686 | * HEAD can only be done to configuration files under | |
1687 | * /admin/conf... | |
1688 | */ | |
1689 | ||
1690 | cupsdLogClient(con, CUPSD_LOG_ERROR, | |
1691 | "Request for subdirectory \"%s\".", con->uri); | |
1692 | ||
1693 | if (!cupsdSendError(con, HTTP_STATUS_FORBIDDEN, CUPSD_AUTH_NONE)) | |
1694 | { | |
1695 | cupsdCloseClient(con); | |
1696 | return; | |
1697 | } | |
1698 | ||
1699 | cupsdLogRequest(con, HTTP_STATUS_FORBIDDEN); | |
1700 | break; | |
1701 | } | |
1702 | else if ((filename = get_file(con, &filestats, buf, | |
1703 | sizeof(buf))) == NULL) | |
1704 | { | |
1705 | httpClearFields(con->http); | |
1706 | ||
1707 | if (!cupsdSendHeader(con, HTTP_STATUS_NOT_FOUND, "text/html", | |
1708 | CUPSD_AUTH_NONE)) | |
1709 | { | |
1710 | cupsdCloseClient(con); | |
1711 | return; | |
1712 | } | |
1713 | ||
1714 | cupsdLogRequest(con, HTTP_STATUS_NOT_FOUND); | |
1715 | } | |
1716 | else if (!check_if_modified(con, &filestats)) | |
1717 | { | |
1718 | if (!cupsdSendError(con, HTTP_STATUS_NOT_MODIFIED, CUPSD_AUTH_NONE)) | |
1719 | { | |
1720 | cupsdCloseClient(con); | |
1721 | return; | |
1722 | } | |
1723 | ||
1724 | cupsdLogRequest(con, HTTP_STATUS_NOT_MODIFIED); | |
1725 | } | |
1726 | else | |
1727 | { | |
1728 | /* | |
1729 | * Serve a file... | |
1730 | */ | |
1731 | ||
1732 | type = mimeFileType(MimeDatabase, filename, NULL, NULL); | |
1733 | if (type == NULL) | |
1734 | strlcpy(line, "text/plain", sizeof(line)); | |
1735 | else | |
1736 | snprintf(line, sizeof(line), "%s/%s", type->super, type->type); | |
1737 | ||
1738 | httpClearFields(con->http); | |
1739 | ||
1740 | httpSetField(con->http, HTTP_FIELD_LAST_MODIFIED, | |
1741 | httpGetDateString(filestats.st_mtime)); | |
1742 | httpSetLength(con->http, (size_t)filestats.st_size); | |
1743 | ||
1744 | if (!cupsdSendHeader(con, HTTP_STATUS_OK, line, CUPSD_AUTH_NONE)) | |
1745 | { | |
1746 | cupsdCloseClient(con); | |
1747 | return; | |
1748 | } | |
1749 | ||
1750 | cupsdLogRequest(con, HTTP_STATUS_OK); | |
1751 | } | |
1752 | break; | |
1753 | ||
1754 | default : | |
1755 | break; /* Anti-compiler-warning-code */ | |
1756 | } | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | /* | |
1761 | * Handle any incoming data... | |
1762 | */ | |
1763 | ||
1764 | switch (httpGetState(con->http)) | |
1765 | { | |
1766 | case HTTP_STATE_PUT_RECV : | |
1767 | do | |
1768 | { | |
1769 | if ((bytes = httpRead2(con->http, line, sizeof(line))) < 0) | |
1770 | { | |
1771 | if (httpError(con->http) && httpError(con->http) != EPIPE) | |
1772 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
1773 | "HTTP_STATE_PUT_RECV Closing for error %d (%s)", | |
1774 | httpError(con->http), strerror(httpError(con->http))); | |
1775 | else | |
1776 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
1777 | "HTTP_STATE_PUT_RECV Closing on EOF."); | |
1778 | ||
1779 | cupsdCloseClient(con); | |
1780 | return; | |
1781 | } | |
1782 | else if (bytes > 0) | |
1783 | { | |
1784 | con->bytes += bytes; | |
1785 | ||
1786 | if (write(con->file, line, (size_t)bytes) < bytes) | |
1787 | { | |
1788 | cupsdLogClient(con, CUPSD_LOG_ERROR, | |
1789 | "Unable to write %d bytes to \"%s\": %s", bytes, | |
1790 | con->filename, strerror(errno)); | |
1791 | ||
1792 | close(con->file); | |
1793 | con->file = -1; | |
1794 | unlink(con->filename); | |
1795 | cupsdClearString(&con->filename); | |
1796 | ||
1797 | if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE)) | |
1798 | { | |
1799 | cupsdCloseClient(con); | |
1800 | return; | |
1801 | } | |
1802 | } | |
1803 | } | |
1804 | } | |
1805 | while (httpGetState(con->http) == HTTP_STATE_PUT_RECV && httpGetReady(con->http)); | |
1806 | ||
1807 | if (httpGetState(con->http) == HTTP_STATE_STATUS) | |
1808 | { | |
1809 | /* | |
1810 | * End of file, see how big it is... | |
1811 | */ | |
1812 | ||
1813 | fstat(con->file, &filestats); | |
1814 | ||
1815 | close(con->file); | |
1816 | con->file = -1; | |
1817 | ||
1818 | if (filestats.st_size > MaxRequestSize && | |
1819 | MaxRequestSize > 0) | |
1820 | { | |
1821 | /* | |
1822 | * Request is too big; remove it and send an error... | |
1823 | */ | |
1824 | ||
1825 | unlink(con->filename); | |
1826 | cupsdClearString(&con->filename); | |
1827 | ||
1828 | if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE)) | |
1829 | { | |
1830 | cupsdCloseClient(con); | |
1831 | return; | |
1832 | } | |
1833 | } | |
1834 | ||
1835 | /* | |
1836 | * Install the configuration file... | |
1837 | */ | |
1838 | ||
1839 | status = install_cupsd_conf(con); | |
1840 | ||
1841 | /* | |
1842 | * Return the status to the client... | |
1843 | */ | |
1844 | ||
1845 | if (!cupsdSendError(con, status, CUPSD_AUTH_NONE)) | |
1846 | { | |
1847 | cupsdCloseClient(con); | |
1848 | return; | |
1849 | } | |
1850 | } | |
1851 | break; | |
1852 | ||
1853 | case HTTP_STATE_POST_RECV : | |
1854 | do | |
1855 | { | |
1856 | if (con->request && con->file < 0) | |
1857 | { | |
1858 | /* | |
1859 | * Grab any request data from the connection... | |
1860 | */ | |
1861 | ||
1862 | if ((ipp_state = ippRead(con->http, con->request)) == IPP_STATE_ERROR) | |
1863 | { | |
1864 | cupsdLogClient(con, CUPSD_LOG_ERROR, "IPP read error: %s", | |
1865 | cupsLastErrorString()); | |
1866 | ||
1867 | cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE); | |
1868 | cupsdCloseClient(con); | |
1869 | return; | |
1870 | } | |
1871 | else if (ipp_state != IPP_STATE_DATA) | |
1872 | { | |
1873 | if (httpGetState(con->http) == HTTP_STATE_POST_SEND) | |
1874 | { | |
1875 | cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE); | |
1876 | cupsdCloseClient(con); | |
1877 | return; | |
1878 | } | |
1879 | ||
1880 | if (httpGetReady(con->http)) | |
1881 | continue; | |
1882 | break; | |
1883 | } | |
1884 | else | |
1885 | { | |
1886 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "%d.%d %s %d", | |
1887 | con->request->request.op.version[0], | |
1888 | con->request->request.op.version[1], | |
1889 | ippOpString(con->request->request.op.operation_id), | |
1890 | con->request->request.op.request_id); | |
1891 | con->bytes += ippLength(con->request); | |
1892 | } | |
1893 | } | |
1894 | ||
1895 | if (con->file < 0 && httpGetState(con->http) != HTTP_STATE_POST_SEND) | |
1896 | { | |
1897 | /* | |
1898 | * Create a file as needed for the request data... | |
1899 | */ | |
1900 | ||
1901 | cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, | |
1902 | request_id ++); | |
1903 | con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640); | |
1904 | ||
1905 | if (con->file < 0) | |
1906 | { | |
1907 | cupsdLogClient(con, CUPSD_LOG_ERROR, | |
1908 | "Unable to create request file \"%s\": %s", | |
1909 | con->filename, strerror(errno)); | |
1910 | ||
1911 | if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE)) | |
1912 | { | |
1913 | cupsdCloseClient(con); | |
1914 | return; | |
1915 | } | |
1916 | } | |
1917 | ||
1918 | fchmod(con->file, 0640); | |
1919 | fchown(con->file, RunUser, Group); | |
1920 | fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC); | |
1921 | } | |
1922 | ||
1923 | if (httpGetState(con->http) != HTTP_STATE_POST_SEND) | |
1924 | { | |
1925 | if (!httpWait(con->http, 0)) | |
1926 | return; | |
1927 | else if ((bytes = httpRead2(con->http, line, sizeof(line))) < 0) | |
1928 | { | |
1929 | if (httpError(con->http) && httpError(con->http) != EPIPE) | |
1930 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
1931 | "HTTP_STATE_POST_SEND Closing for error %d (%s)", | |
1932 | httpError(con->http), strerror(httpError(con->http))); | |
1933 | else | |
1934 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
1935 | "HTTP_STATE_POST_SEND Closing on EOF."); | |
1936 | ||
1937 | cupsdCloseClient(con); | |
1938 | return; | |
1939 | } | |
1940 | else if (bytes > 0) | |
1941 | { | |
1942 | con->bytes += bytes; | |
1943 | ||
1944 | if (write(con->file, line, (size_t)bytes) < bytes) | |
1945 | { | |
1946 | cupsdLogClient(con, CUPSD_LOG_ERROR, | |
1947 | "Unable to write %d bytes to \"%s\": %s", | |
1948 | bytes, con->filename, strerror(errno)); | |
1949 | ||
1950 | close(con->file); | |
1951 | con->file = -1; | |
1952 | unlink(con->filename); | |
1953 | cupsdClearString(&con->filename); | |
1954 | ||
1955 | if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, | |
1956 | CUPSD_AUTH_NONE)) | |
1957 | { | |
1958 | cupsdCloseClient(con); | |
1959 | return; | |
1960 | } | |
1961 | } | |
1962 | } | |
1963 | else if (httpGetState(con->http) == HTTP_STATE_POST_RECV) | |
1964 | return; | |
1965 | else if (httpGetState(con->http) != HTTP_STATE_POST_SEND) | |
1966 | { | |
1967 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
1968 | "Closing on unexpected state %s.", | |
1969 | httpStateString(httpGetState(con->http))); | |
1970 | cupsdCloseClient(con); | |
1971 | return; | |
1972 | } | |
1973 | } | |
1974 | } | |
1975 | while (httpGetState(con->http) == HTTP_STATE_POST_RECV && httpGetReady(con->http)); | |
1976 | ||
1977 | if (httpGetState(con->http) == HTTP_STATE_POST_SEND) | |
1978 | { | |
1979 | if (con->file >= 0) | |
1980 | { | |
1981 | fstat(con->file, &filestats); | |
1982 | ||
1983 | close(con->file); | |
1984 | con->file = -1; | |
1985 | ||
1986 | if (filestats.st_size > MaxRequestSize && | |
1987 | MaxRequestSize > 0) | |
1988 | { | |
1989 | /* | |
1990 | * Request is too big; remove it and send an error... | |
1991 | */ | |
1992 | ||
1993 | unlink(con->filename); | |
1994 | cupsdClearString(&con->filename); | |
1995 | ||
1996 | if (con->request) | |
1997 | { | |
1998 | /* | |
1999 | * Delete any IPP request data... | |
2000 | */ | |
2001 | ||
2002 | ippDelete(con->request); | |
2003 | con->request = NULL; | |
2004 | } | |
2005 | ||
2006 | if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE)) | |
2007 | { | |
2008 | cupsdCloseClient(con); | |
2009 | return; | |
2010 | } | |
2011 | } | |
2012 | else if (filestats.st_size == 0) | |
2013 | { | |
2014 | /* | |
2015 | * Don't allow empty file... | |
2016 | */ | |
2017 | ||
2018 | unlink(con->filename); | |
2019 | cupsdClearString(&con->filename); | |
2020 | } | |
2021 | ||
2022 | if (con->command) | |
2023 | { | |
2024 | if (!cupsdSendCommand(con, con->command, con->options, 0)) | |
2025 | { | |
2026 | if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE)) | |
2027 | { | |
2028 | cupsdCloseClient(con); | |
2029 | return; | |
2030 | } | |
2031 | } | |
2032 | else | |
2033 | cupsdLogRequest(con, HTTP_STATUS_OK); | |
2034 | } | |
2035 | } | |
2036 | ||
2037 | if (con->request) | |
2038 | { | |
2039 | cupsdProcessIPPRequest(con); | |
2040 | ||
2041 | if (con->filename) | |
2042 | { | |
2043 | unlink(con->filename); | |
2044 | cupsdClearString(&con->filename); | |
2045 | } | |
2046 | ||
2047 | return; | |
2048 | } | |
2049 | } | |
2050 | break; | |
2051 | ||
2052 | default : | |
2053 | break; /* Anti-compiler-warning-code */ | |
2054 | } | |
2055 | ||
2056 | if (httpGetState(con->http) == HTTP_STATE_WAITING) | |
2057 | { | |
2058 | if (!httpGetKeepAlive(con->http)) | |
2059 | { | |
2060 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
2061 | "Closing because Keep-Alive is disabled."); | |
2062 | cupsdCloseClient(con); | |
2063 | } | |
2064 | else | |
2065 | { | |
2066 | cupsArrayRemove(ActiveClients, con); | |
2067 | cupsdSetBusyState(); | |
2068 | } | |
2069 | } | |
2070 | } | |
2071 | ||
2072 | ||
2073 | /* | |
2074 | * 'cupsdSendCommand()' - Send output from a command via HTTP. | |
2075 | */ | |
2076 | ||
2077 | int /* O - 1 on success, 0 on failure */ | |
2078 | cupsdSendCommand( | |
2079 | cupsd_client_t *con, /* I - Client connection */ | |
2080 | char *command, /* I - Command to run */ | |
2081 | char *options, /* I - Command-line options */ | |
2082 | int root) /* I - Run as root? */ | |
2083 | { | |
2084 | int fd; /* Standard input file descriptor */ | |
2085 | ||
2086 | ||
2087 | if (con->filename) | |
2088 | { | |
2089 | fd = open(con->filename, O_RDONLY); | |
2090 | ||
2091 | if (fd < 0) | |
2092 | { | |
2093 | cupsdLogClient(con, CUPSD_LOG_ERROR, | |
2094 | "Unable to open \"%s\" for reading: %s", | |
2095 | con->filename ? con->filename : "/dev/null", | |
2096 | strerror(errno)); | |
2097 | return (0); | |
2098 | } | |
2099 | ||
2100 | fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); | |
2101 | } | |
2102 | else | |
2103 | fd = -1; | |
2104 | ||
2105 | con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root); | |
2106 | con->pipe_status = HTTP_STATUS_OK; | |
2107 | ||
2108 | httpClearFields(con->http); | |
2109 | ||
2110 | if (fd >= 0) | |
2111 | close(fd); | |
2112 | ||
2113 | cupsdLogClient(con, CUPSD_LOG_INFO, "Started \"%s\" (pid=%d, file=%d)", | |
2114 | command, con->pipe_pid, con->file); | |
2115 | ||
2116 | if (con->pipe_pid == 0) | |
2117 | return (0); | |
2118 | ||
2119 | fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC); | |
2120 | ||
2121 | cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con); | |
2122 | ||
2123 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for CGI data."); | |
2124 | ||
2125 | con->sent_header = 0; | |
2126 | con->file_ready = 0; | |
2127 | con->got_fields = 0; | |
2128 | con->header_used = 0; | |
2129 | ||
2130 | return (1); | |
2131 | } | |
2132 | ||
2133 | ||
2134 | /* | |
2135 | * 'cupsdSendError()' - Send an error message via HTTP. | |
2136 | */ | |
2137 | ||
2138 | int /* O - 1 if successful, 0 otherwise */ | |
2139 | cupsdSendError(cupsd_client_t *con, /* I - Connection */ | |
2140 | http_status_t code, /* I - Error code */ | |
2141 | int auth_type)/* I - Authentication type */ | |
2142 | { | |
2143 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, "cupsdSendError code=%d, auth_type=%d", | |
2144 | code, auth_type); | |
2145 | ||
2146 | #ifdef HAVE_SSL | |
2147 | /* | |
2148 | * Force client to upgrade for authentication if that is how the | |
2149 | * server is configured... | |
2150 | */ | |
2151 | ||
2152 | if (code == HTTP_STATUS_UNAUTHORIZED && | |
2153 | DefaultEncryption == HTTP_ENCRYPTION_REQUIRED && | |
2154 | _cups_strcasecmp(httpGetHostname(con->http, NULL, 0), "localhost") && | |
2155 | !httpIsEncrypted(con->http)) | |
2156 | { | |
2157 | code = HTTP_STATUS_UPGRADE_REQUIRED; | |
2158 | } | |
2159 | #endif /* HAVE_SSL */ | |
2160 | ||
2161 | /* | |
2162 | * Put the request in the access_log file... | |
2163 | */ | |
2164 | ||
2165 | cupsdLogRequest(con, code); | |
2166 | ||
2167 | /* | |
2168 | * To work around bugs in some proxies, don't use Keep-Alive for some | |
2169 | * error messages... | |
2170 | * | |
2171 | * Kerberos authentication doesn't work without Keep-Alive, so | |
2172 | * never disable it in that case. | |
2173 | */ | |
2174 | ||
2175 | httpClearFields(con->http); | |
2176 | ||
2177 | if (code >= HTTP_STATUS_BAD_REQUEST && con->type != CUPSD_AUTH_NEGOTIATE) | |
2178 | httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF); | |
2179 | ||
2180 | if (httpGetVersion(con->http) >= HTTP_VERSION_1_1 && | |
2181 | httpGetKeepAlive(con->http) == HTTP_KEEPALIVE_OFF) | |
2182 | httpSetField(con->http, HTTP_FIELD_CONNECTION, "close"); | |
2183 | ||
2184 | if (code >= HTTP_STATUS_BAD_REQUEST) | |
2185 | { | |
2186 | /* | |
2187 | * Send a human-readable error message. | |
2188 | */ | |
2189 | ||
2190 | char message[4096], /* Message for user */ | |
2191 | urltext[1024], /* URL redirection text */ | |
2192 | redirect[1024]; /* Redirection link */ | |
2193 | const char *text; /* Status-specific text */ | |
2194 | ||
2195 | ||
2196 | redirect[0] = '\0'; | |
2197 | ||
2198 | if (code == HTTP_STATUS_UNAUTHORIZED) | |
2199 | text = _cupsLangString(con->language, | |
2200 | _("Enter your username and password or the " | |
2201 | "root username and password to access this " | |
2202 | "page. If you are using Kerberos authentication, " | |
2203 | "make sure you have a valid Kerberos ticket.")); | |
2204 | else if (code == HTTP_STATUS_UPGRADE_REQUIRED) | |
2205 | { | |
2206 | text = urltext; | |
2207 | ||
2208 | snprintf(urltext, sizeof(urltext), | |
2209 | _cupsLangString(con->language, | |
2210 | _("You must access this page using the URL " | |
2211 | "<A HREF=\"https://%s:%d%s\">" | |
2212 | "https://%s:%d%s</A>.")), | |
2213 | con->servername, con->serverport, con->uri, | |
2214 | con->servername, con->serverport, con->uri); | |
2215 | ||
2216 | snprintf(redirect, sizeof(redirect), | |
2217 | "<META HTTP-EQUIV=\"Refresh\" " | |
2218 | "CONTENT=\"3;URL=https://%s:%d%s\">\n", | |
2219 | con->servername, con->serverport, con->uri); | |
2220 | } | |
2221 | else if (code == HTTP_STATUS_CUPS_WEBIF_DISABLED) | |
2222 | text = _cupsLangString(con->language, | |
2223 | _("The web interface is currently disabled. Run " | |
2224 | "\"cupsctl WebInterface=yes\" to enable it.")); | |
2225 | else | |
2226 | text = ""; | |
2227 | ||
2228 | snprintf(message, sizeof(message), | |
2229 | "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" " | |
2230 | "\"http://www.w3.org/TR/html4/loose.dtd\">\n" | |
2231 | "<HTML>\n" | |
2232 | "<HEAD>\n" | |
2233 | "\t<META HTTP-EQUIV=\"Content-Type\" " | |
2234 | "CONTENT=\"text/html; charset=utf-8\">\n" | |
2235 | "\t<TITLE>%s - " CUPS_SVERSION "</TITLE>\n" | |
2236 | "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" " | |
2237 | "HREF=\"/cups.css\">\n" | |
2238 | "%s" | |
2239 | "</HEAD>\n" | |
2240 | "<BODY>\n" | |
2241 | "<H1>%s</H1>\n" | |
2242 | "<P>%s</P>\n" | |
2243 | "</BODY>\n" | |
2244 | "</HTML>\n", | |
2245 | _httpStatus(con->language, code), redirect, | |
2246 | _httpStatus(con->language, code), text); | |
2247 | ||
2248 | /* | |
2249 | * Send an error message back to the client. If the error code is a | |
2250 | * 400 or 500 series, make sure the message contains some text, too! | |
2251 | */ | |
2252 | ||
2253 | size_t length = strlen(message); /* Length of message */ | |
2254 | ||
2255 | httpSetLength(con->http, length); | |
2256 | ||
2257 | if (!cupsdSendHeader(con, code, "text/html", auth_type)) | |
2258 | return (0); | |
2259 | ||
2260 | if (httpWrite2(con->http, message, length) < 0) | |
2261 | return (0); | |
2262 | ||
2263 | if (httpFlushWrite(con->http) < 0) | |
2264 | return (0); | |
2265 | } | |
2266 | else | |
2267 | { | |
2268 | httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0"); | |
2269 | ||
2270 | if (!cupsdSendHeader(con, code, NULL, auth_type)) | |
2271 | return (0); | |
2272 | } | |
2273 | ||
2274 | return (1); | |
2275 | } | |
2276 | ||
2277 | ||
2278 | /* | |
2279 | * 'cupsdSendHeader()' - Send an HTTP request. | |
2280 | */ | |
2281 | ||
2282 | int /* O - 1 on success, 0 on failure */ | |
2283 | cupsdSendHeader( | |
2284 | cupsd_client_t *con, /* I - Client to send to */ | |
2285 | http_status_t code, /* I - HTTP status code */ | |
2286 | char *type, /* I - MIME type of document */ | |
2287 | int auth_type) /* I - Type of authentication */ | |
2288 | { | |
2289 | char auth_str[1024]; /* Authorization string */ | |
2290 | ||
2291 | ||
2292 | /* | |
2293 | * Send the HTTP status header... | |
2294 | */ | |
2295 | ||
2296 | if (code == HTTP_STATUS_CUPS_WEBIF_DISABLED) | |
2297 | { | |
2298 | /* | |
2299 | * Treat our special "web interface is disabled" status as "200 OK" for web | |
2300 | * browsers. | |
2301 | */ | |
2302 | ||
2303 | code = HTTP_STATUS_OK; | |
2304 | } | |
2305 | ||
2306 | if (ServerHeader) | |
2307 | httpSetField(con->http, HTTP_FIELD_SERVER, ServerHeader); | |
2308 | ||
2309 | if (code == HTTP_STATUS_METHOD_NOT_ALLOWED) | |
2310 | httpSetField(con->http, HTTP_FIELD_ALLOW, "GET, HEAD, OPTIONS, POST, PUT"); | |
2311 | ||
2312 | if (code == HTTP_STATUS_UNAUTHORIZED) | |
2313 | { | |
2314 | if (auth_type == CUPSD_AUTH_NONE) | |
2315 | { | |
2316 | if (!con->best || con->best->type <= CUPSD_AUTH_NONE) | |
2317 | auth_type = cupsdDefaultAuthType(); | |
2318 | else | |
2319 | auth_type = con->best->type; | |
2320 | } | |
2321 | ||
2322 | auth_str[0] = '\0'; | |
2323 | ||
2324 | if (auth_type == CUPSD_AUTH_BASIC || auth_type == CUPSD_AUTH_BASICDIGEST) | |
2325 | strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str)); | |
2326 | else if (auth_type == CUPSD_AUTH_DIGEST) | |
2327 | snprintf(auth_str, sizeof(auth_str), "Digest realm=\"CUPS\", nonce=\"%s\"", | |
2328 | httpGetHostname(con->http, NULL, 0)); | |
2329 | #ifdef HAVE_GSSAPI | |
2330 | else if (auth_type == CUPSD_AUTH_NEGOTIATE) | |
2331 | { | |
2332 | # ifdef AF_LOCAL | |
2333 | if (httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL) | |
2334 | strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str)); | |
2335 | else | |
2336 | # endif /* AF_LOCAL */ | |
2337 | strlcpy(auth_str, "Negotiate", sizeof(auth_str)); | |
2338 | } | |
2339 | #endif /* HAVE_GSSAPI */ | |
2340 | ||
2341 | if (con->best && auth_type != CUPSD_AUTH_NEGOTIATE && | |
2342 | !_cups_strcasecmp(httpGetHostname(con->http, NULL, 0), "localhost")) | |
2343 | { | |
2344 | /* | |
2345 | * Add a "trc" (try root certification) parameter for local non-Kerberos | |
2346 | * requests when the request requires system group membership - then the | |
2347 | * client knows the root certificate can/should be used. | |
2348 | * | |
2349 | * Also, for OS X we also look for @AUTHKEY and add an "authkey" | |
2350 | * parameter as needed... | |
2351 | */ | |
2352 | ||
2353 | char *name, /* Current user name */ | |
2354 | *auth_key; /* Auth key buffer */ | |
2355 | size_t auth_size; /* Size of remaining buffer */ | |
2356 | ||
2357 | auth_key = auth_str + strlen(auth_str); | |
2358 | auth_size = sizeof(auth_str) - (size_t)(auth_key - auth_str); | |
2359 | ||
2360 | for (name = (char *)cupsArrayFirst(con->best->names); | |
2361 | name; | |
2362 | name = (char *)cupsArrayNext(con->best->names)) | |
2363 | { | |
2364 | #ifdef HAVE_AUTHORIZATION_H | |
2365 | if (!_cups_strncasecmp(name, "@AUTHKEY(", 9)) | |
2366 | { | |
2367 | snprintf(auth_key, auth_size, ", authkey=\"%s\"", name + 9); | |
2368 | /* end parenthesis is stripped in conf.c */ | |
2369 | break; | |
2370 | } | |
2371 | else | |
2372 | #endif /* HAVE_AUTHORIZATION_H */ | |
2373 | if (!_cups_strcasecmp(name, "@SYSTEM")) | |
2374 | { | |
2375 | #ifdef HAVE_AUTHORIZATION_H | |
2376 | if (SystemGroupAuthKey) | |
2377 | snprintf(auth_key, auth_size, | |
2378 | ", authkey=\"%s\"", | |
2379 | SystemGroupAuthKey); | |
2380 | else | |
2381 | #else | |
2382 | strlcpy(auth_key, ", trc=\"y\"", auth_size); | |
2383 | #endif /* HAVE_AUTHORIZATION_H */ | |
2384 | break; | |
2385 | } | |
2386 | } | |
2387 | } | |
2388 | ||
2389 | if (auth_str[0]) | |
2390 | { | |
2391 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "WWW-Authenticate: %s", auth_str); | |
2392 | ||
2393 | httpSetField(con->http, HTTP_FIELD_WWW_AUTHENTICATE, auth_str); | |
2394 | } | |
2395 | } | |
2396 | ||
2397 | if (con->language && strcmp(con->language->language, "C")) | |
2398 | httpSetField(con->http, HTTP_FIELD_CONTENT_LANGUAGE, con->language->language); | |
2399 | ||
2400 | if (type) | |
2401 | { | |
2402 | if (!strcmp(type, "text/html")) | |
2403 | httpSetField(con->http, HTTP_FIELD_CONTENT_TYPE, "text/html; charset=utf-8"); | |
2404 | else | |
2405 | httpSetField(con->http, HTTP_FIELD_CONTENT_TYPE, type); | |
2406 | } | |
2407 | ||
2408 | return (!httpWriteResponse(con->http, code)); | |
2409 | } | |
2410 | ||
2411 | ||
2412 | /* | |
2413 | * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs. | |
2414 | */ | |
2415 | ||
2416 | void | |
2417 | cupsdUpdateCGI(void) | |
2418 | { | |
2419 | char *ptr, /* Pointer to end of line in buffer */ | |
2420 | message[1024]; /* Pointer to message text */ | |
2421 | int loglevel; /* Log level for message */ | |
2422 | ||
2423 | ||
2424 | while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel, | |
2425 | message, sizeof(message))) != NULL) | |
2426 | { | |
2427 | if (loglevel == CUPSD_LOG_INFO) | |
2428 | cupsdLogMessage(CUPSD_LOG_INFO, "%s", message); | |
2429 | ||
2430 | if (!strchr(CGIStatusBuffer->buffer, '\n')) | |
2431 | break; | |
2432 | } | |
2433 | ||
2434 | if (ptr == NULL && !CGIStatusBuffer->bufused) | |
2435 | { | |
2436 | /* | |
2437 | * Fatal error on pipe - should never happen! | |
2438 | */ | |
2439 | ||
2440 | cupsdLogMessage(CUPSD_LOG_CRIT, | |
2441 | "cupsdUpdateCGI: error reading from CGI error pipe - %s", | |
2442 | strerror(errno)); | |
2443 | } | |
2444 | } | |
2445 | ||
2446 | ||
2447 | /* | |
2448 | * 'cupsdWriteClient()' - Write data to a client as needed. | |
2449 | */ | |
2450 | ||
2451 | void | |
2452 | cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */ | |
2453 | { | |
2454 | int bytes, /* Number of bytes written */ | |
2455 | field_col; /* Current column */ | |
2456 | char *bufptr, /* Pointer into buffer */ | |
2457 | *bufend; /* Pointer to end of buffer */ | |
2458 | ipp_state_t ipp_state; /* IPP state value */ | |
2459 | ||
2460 | ||
2461 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "con->http=%p", con->http); | |
2462 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
2463 | "cupsdWriteClient " | |
2464 | "error=%d, " | |
2465 | "used=%d, " | |
2466 | "state=%s, " | |
2467 | "data_encoding=HTTP_ENCODING_%s, " | |
2468 | "data_remaining=" CUPS_LLFMT ", " | |
2469 | "response=%p(%s), " | |
2470 | "pipe_pid=%d, " | |
2471 | "file=%d", | |
2472 | httpError(con->http), (int)httpGetReady(con->http), | |
2473 | httpStateString(httpGetState(con->http)), | |
2474 | httpIsChunked(con->http) ? "CHUNKED" : "LENGTH", | |
2475 | CUPS_LLCAST httpGetLength2(con->http), | |
2476 | con->response, | |
2477 | con->response ? ippStateString(ippGetState(con->request)) : "", | |
2478 | con->pipe_pid, con->file); | |
2479 | ||
2480 | if (httpGetState(con->http) != HTTP_STATE_GET_SEND && | |
2481 | httpGetState(con->http) != HTTP_STATE_POST_SEND) | |
2482 | { | |
2483 | /* | |
2484 | * If we get called in the wrong state, then something went wrong with the | |
2485 | * connection and we need to shut it down... | |
2486 | */ | |
2487 | ||
2488 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on unexpected HTTP write state %s.", | |
2489 | httpStateString(httpGetState(con->http))); | |
2490 | cupsdCloseClient(con); | |
2491 | return; | |
2492 | } | |
2493 | ||
2494 | if (con->pipe_pid) | |
2495 | { | |
2496 | /* | |
2497 | * Make sure we select on the CGI output... | |
2498 | */ | |
2499 | ||
2500 | cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con); | |
2501 | ||
2502 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for CGI data."); | |
2503 | ||
2504 | if (!con->file_ready) | |
2505 | { | |
2506 | /* | |
2507 | * Try again later when there is CGI output available... | |
2508 | */ | |
2509 | ||
2510 | cupsdRemoveSelect(httpGetFd(con->http)); | |
2511 | return; | |
2512 | } | |
2513 | ||
2514 | con->file_ready = 0; | |
2515 | } | |
2516 | ||
2517 | if (con->response && con->response->state != IPP_STATE_DATA) | |
2518 | { | |
2519 | size_t wused = httpGetPending(con->http); /* Previous write buffer use */ | |
2520 | ||
2521 | do | |
2522 | { | |
2523 | /* | |
2524 | * Write a single attribute or the IPP message header... | |
2525 | */ | |
2526 | ||
2527 | ipp_state = ippWrite(con->http, con->response); | |
2528 | ||
2529 | /* | |
2530 | * If the write buffer has been flushed, stop buffering up attributes... | |
2531 | */ | |
2532 | ||
2533 | if (httpGetPending(con->http) <= wused) | |
2534 | break; | |
2535 | } | |
2536 | while (ipp_state != IPP_STATE_DATA && ipp_state != IPP_STATE_ERROR); | |
2537 | ||
2538 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
2539 | "Writing IPP response, ipp_state=%s, old " | |
2540 | "wused=" CUPS_LLFMT ", new wused=" CUPS_LLFMT, | |
2541 | ippStateString(ipp_state), | |
2542 | CUPS_LLCAST wused, CUPS_LLCAST httpGetPending(con->http)); | |
2543 | ||
2544 | if (httpGetPending(con->http) > 0) | |
2545 | httpFlushWrite(con->http); | |
2546 | ||
2547 | bytes = ipp_state != IPP_STATE_ERROR && | |
2548 | (con->file >= 0 || ipp_state != IPP_STATE_DATA); | |
2549 | ||
2550 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
2551 | "bytes=%d, http_state=%d, data_remaining=" CUPS_LLFMT, | |
2552 | (int)bytes, httpGetState(con->http), | |
2553 | CUPS_LLCAST httpGetLength2(con->http)); | |
2554 | } | |
2555 | else if ((bytes = read(con->file, con->header + con->header_used, | |
2556 | sizeof(con->header) - (size_t)con->header_used)) > 0) | |
2557 | { | |
2558 | con->header_used += bytes; | |
2559 | ||
2560 | if (con->pipe_pid && !con->got_fields) | |
2561 | { | |
2562 | /* | |
2563 | * Inspect the data for Content-Type and other fields. | |
2564 | */ | |
2565 | ||
2566 | for (bufptr = con->header, bufend = con->header + con->header_used, | |
2567 | field_col = 0; | |
2568 | !con->got_fields && bufptr < bufend; | |
2569 | bufptr ++) | |
2570 | { | |
2571 | if (*bufptr == '\n') | |
2572 | { | |
2573 | /* | |
2574 | * Send line to client... | |
2575 | */ | |
2576 | ||
2577 | if (bufptr > con->header && bufptr[-1] == '\r') | |
2578 | bufptr[-1] = '\0'; | |
2579 | *bufptr++ = '\0'; | |
2580 | ||
2581 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Script header: %s", con->header); | |
2582 | ||
2583 | if (!con->sent_header) | |
2584 | { | |
2585 | /* | |
2586 | * Handle redirection and CGI status codes... | |
2587 | */ | |
2588 | ||
2589 | http_field_t field; /* HTTP field */ | |
2590 | char *value = strchr(con->header, ':'); | |
2591 | /* Value of field */ | |
2592 | ||
2593 | if (value) | |
2594 | { | |
2595 | *value++ = '\0'; | |
2596 | while (isspace(*value & 255)) | |
2597 | value ++; | |
2598 | } | |
2599 | ||
2600 | field = httpFieldValue(con->header); | |
2601 | ||
2602 | if (field != HTTP_FIELD_UNKNOWN && value) | |
2603 | { | |
2604 | httpSetField(con->http, field, value); | |
2605 | ||
2606 | if (field == HTTP_FIELD_LOCATION) | |
2607 | { | |
2608 | con->pipe_status = HTTP_STATUS_SEE_OTHER; | |
2609 | con->sent_header = 2; | |
2610 | } | |
2611 | else | |
2612 | con->sent_header = 1; | |
2613 | } | |
2614 | else if (!_cups_strcasecmp(con->header, "Status") && value) | |
2615 | { | |
2616 | con->pipe_status = (http_status_t)atoi(value); | |
2617 | con->sent_header = 2; | |
2618 | } | |
2619 | else if (!_cups_strcasecmp(con->header, "Set-Cookie") && value) | |
2620 | { | |
2621 | char *sep = strchr(value, ';'); | |
2622 | /* Separator between name=value and the rest */ | |
2623 | ||
2624 | if (sep) | |
2625 | *sep = '\0'; | |
2626 | ||
2627 | httpSetCookie(con->http, value); | |
2628 | con->sent_header = 1; | |
2629 | } | |
2630 | } | |
2631 | ||
2632 | /* | |
2633 | * Update buffer... | |
2634 | */ | |
2635 | ||
2636 | con->header_used -= bufptr - con->header; | |
2637 | ||
2638 | if (con->header_used > 0) | |
2639 | memmove(con->header, bufptr, con->header_used); | |
2640 | ||
2641 | bufptr = con->header - 1; | |
2642 | ||
2643 | /* | |
2644 | * See if the line was empty... | |
2645 | */ | |
2646 | ||
2647 | if (field_col == 0) | |
2648 | { | |
2649 | con->got_fields = 1; | |
2650 | ||
2651 | if (httpGetVersion(con->http) == HTTP_VERSION_1_1 && | |
2652 | !httpGetField(con->http, HTTP_FIELD_CONTENT_LENGTH)[0]) | |
2653 | httpSetLength(con->http, 0); | |
2654 | ||
2655 | if (!cupsdSendHeader(con, con->pipe_status, NULL, CUPSD_AUTH_NONE)) | |
2656 | { | |
2657 | cupsdCloseClient(con); | |
2658 | return; | |
2659 | } | |
2660 | } | |
2661 | else | |
2662 | field_col = 0; | |
2663 | } | |
2664 | else if (*bufptr != '\r') | |
2665 | field_col ++; | |
2666 | } | |
2667 | ||
2668 | if (!con->got_fields) | |
2669 | return; | |
2670 | } | |
2671 | ||
2672 | if (con->header_used > 0) | |
2673 | { | |
2674 | if (httpWrite2(con->http, con->header, (size_t)con->header_used) < 0) | |
2675 | { | |
2676 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing for error %d (%s)", | |
2677 | httpError(con->http), strerror(httpError(con->http))); | |
2678 | cupsdCloseClient(con); | |
2679 | return; | |
2680 | } | |
2681 | ||
2682 | if (httpIsChunked(con->http)) | |
2683 | httpFlushWrite(con->http); | |
2684 | ||
2685 | con->bytes += con->header_used; | |
2686 | ||
2687 | if (httpGetState(con->http) == HTTP_STATE_WAITING) | |
2688 | bytes = 0; | |
2689 | else | |
2690 | bytes = con->header_used; | |
2691 | ||
2692 | con->header_used = 0; | |
2693 | } | |
2694 | } | |
2695 | ||
2696 | if (bytes <= 0 || | |
2697 | (httpGetState(con->http) != HTTP_STATE_GET_SEND && | |
2698 | httpGetState(con->http) != HTTP_STATE_POST_SEND)) | |
2699 | { | |
2700 | if (!con->sent_header && con->pipe_pid) | |
2701 | cupsdSendError(con, HTTP_STATUS_SERVER_ERROR, CUPSD_AUTH_NONE); | |
2702 | else | |
2703 | { | |
2704 | cupsdLogRequest(con, HTTP_STATUS_OK); | |
2705 | ||
2706 | if (httpIsChunked(con->http) && (!con->pipe_pid || con->sent_header == 1)) | |
2707 | { | |
2708 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Sending 0-length chunk."); | |
2709 | ||
2710 | if (httpWrite2(con->http, "", 0) < 0) | |
2711 | { | |
2712 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing for error %d (%s)", | |
2713 | httpError(con->http), strerror(httpError(con->http))); | |
2714 | cupsdCloseClient(con); | |
2715 | return; | |
2716 | } | |
2717 | } | |
2718 | ||
2719 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Flushing write buffer."); | |
2720 | httpFlushWrite(con->http); | |
2721 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "New state is %s", httpStateString(httpGetState(con->http))); | |
2722 | } | |
2723 | ||
2724 | cupsdAddSelect(httpGetFd(con->http), (cupsd_selfunc_t)cupsdReadClient, NULL, con); | |
2725 | ||
2726 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for request."); | |
2727 | ||
2728 | if (con->file >= 0) | |
2729 | { | |
2730 | cupsdRemoveSelect(con->file); | |
2731 | ||
2732 | if (con->pipe_pid) | |
2733 | cupsdEndProcess(con->pipe_pid, 0); | |
2734 | ||
2735 | close(con->file); | |
2736 | con->file = -1; | |
2737 | con->pipe_pid = 0; | |
2738 | } | |
2739 | ||
2740 | if (con->filename) | |
2741 | { | |
2742 | unlink(con->filename); | |
2743 | cupsdClearString(&con->filename); | |
2744 | } | |
2745 | ||
2746 | if (con->request) | |
2747 | { | |
2748 | ippDelete(con->request); | |
2749 | con->request = NULL; | |
2750 | } | |
2751 | ||
2752 | if (con->response) | |
2753 | { | |
2754 | ippDelete(con->response); | |
2755 | con->response = NULL; | |
2756 | } | |
2757 | ||
2758 | cupsdClearString(&con->command); | |
2759 | cupsdClearString(&con->options); | |
2760 | cupsdClearString(&con->query_string); | |
2761 | ||
2762 | if (!httpGetKeepAlive(con->http)) | |
2763 | { | |
2764 | cupsdLogClient(con, CUPSD_LOG_DEBUG, | |
2765 | "Closing because Keep-Alive is disabled."); | |
2766 | cupsdCloseClient(con); | |
2767 | return; | |
2768 | } | |
2769 | else | |
2770 | { | |
2771 | cupsArrayRemove(ActiveClients, con); | |
2772 | cupsdSetBusyState(); | |
2773 | } | |
2774 | } | |
2775 | } | |
2776 | ||
2777 | ||
2778 | /* | |
2779 | * 'check_if_modified()' - Decode an "If-Modified-Since" line. | |
2780 | */ | |
2781 | ||
2782 | static int /* O - 1 if modified since */ | |
2783 | check_if_modified( | |
2784 | cupsd_client_t *con, /* I - Client connection */ | |
2785 | struct stat *filestats) /* I - File information */ | |
2786 | { | |
2787 | const char *ptr; /* Pointer into field */ | |
2788 | time_t date; /* Time/date value */ | |
2789 | off_t size; /* Size/length value */ | |
2790 | ||
2791 | ||
2792 | size = 0; | |
2793 | date = 0; | |
2794 | ptr = httpGetField(con->http, HTTP_FIELD_IF_MODIFIED_SINCE); | |
2795 | ||
2796 | if (*ptr == '\0') | |
2797 | return (1); | |
2798 | ||
2799 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
2800 | "check_if_modified " | |
2801 | "filestats=%p(" CUPS_LLFMT ", %d)) If-Modified-Since=\"%s\"", | |
2802 | filestats, CUPS_LLCAST filestats->st_size, | |
2803 | (int)filestats->st_mtime, ptr); | |
2804 | ||
2805 | while (*ptr != '\0') | |
2806 | { | |
2807 | while (isspace(*ptr) || *ptr == ';') | |
2808 | ptr ++; | |
2809 | ||
2810 | if (_cups_strncasecmp(ptr, "length=", 7) == 0) | |
2811 | { | |
2812 | ptr += 7; | |
2813 | size = strtoll(ptr, NULL, 10); | |
2814 | ||
2815 | while (isdigit(*ptr)) | |
2816 | ptr ++; | |
2817 | } | |
2818 | else if (isalpha(*ptr)) | |
2819 | { | |
2820 | date = httpGetDateTime(ptr); | |
2821 | while (*ptr != '\0' && *ptr != ';') | |
2822 | ptr ++; | |
2823 | } | |
2824 | else | |
2825 | ptr ++; | |
2826 | } | |
2827 | ||
2828 | return ((size != filestats->st_size && size != 0) || | |
2829 | (date < filestats->st_mtime && date != 0) || | |
2830 | (size == 0 && date == 0)); | |
2831 | } | |
2832 | ||
2833 | ||
2834 | /* | |
2835 | * 'compare_clients()' - Compare two client connections. | |
2836 | */ | |
2837 | ||
2838 | static int /* O - Result of comparison */ | |
2839 | compare_clients(cupsd_client_t *a, /* I - First client */ | |
2840 | cupsd_client_t *b, /* I - Second client */ | |
2841 | void *data) /* I - User data (not used) */ | |
2842 | { | |
2843 | (void)data; | |
2844 | ||
2845 | if (a == b) | |
2846 | return (0); | |
2847 | else if (a < b) | |
2848 | return (-1); | |
2849 | else | |
2850 | return (1); | |
2851 | } | |
2852 | ||
2853 | ||
2854 | #ifdef HAVE_SSL | |
2855 | /* | |
2856 | * 'cupsd_start_tls()' - Start encryption on a connection. | |
2857 | */ | |
2858 | ||
2859 | static int /* O - 0 on success, -1 on error */ | |
2860 | cupsd_start_tls(cupsd_client_t *con, /* I - Client connection */ | |
2861 | http_encryption_t e) /* I - Encryption mode */ | |
2862 | { | |
2863 | if (httpEncryption(con->http, e)) | |
2864 | { | |
2865 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to encrypt connection: %s", | |
2866 | cupsLastErrorString()); | |
2867 | return (-1); | |
2868 | } | |
2869 | ||
2870 | cupsdLogClient(con, CUPSD_LOG_INFO, "Connection now encrypted."); | |
2871 | return (0); | |
2872 | } | |
2873 | #endif /* HAVE_SSL */ | |
2874 | ||
2875 | ||
2876 | /* | |
2877 | * 'get_file()' - Get a filename and state info. | |
2878 | */ | |
2879 | ||
2880 | static char * /* O - Real filename */ | |
2881 | get_file(cupsd_client_t *con, /* I - Client connection */ | |
2882 | struct stat *filestats, /* O - File information */ | |
2883 | char *filename, /* IO - Filename buffer */ | |
2884 | int len) /* I - Buffer length */ | |
2885 | { | |
2886 | int status; /* Status of filesystem calls */ | |
2887 | char *ptr; /* Pointer info filename */ | |
2888 | int plen; /* Remaining length after pointer */ | |
2889 | char language[7]; /* Language subdirectory, if any */ | |
2890 | ||
2891 | ||
2892 | /* | |
2893 | * Figure out the real filename... | |
2894 | */ | |
2895 | ||
2896 | language[0] = '\0'; | |
2897 | ||
2898 | if (!strncmp(con->uri, "/ppd/", 5) && !strchr(con->uri + 5, '/')) | |
2899 | snprintf(filename, len, "%s%s", ServerRoot, con->uri); | |
2900 | else if (!strncmp(con->uri, "/icons/", 7) && !strchr(con->uri + 7, '/')) | |
2901 | { | |
2902 | snprintf(filename, len, "%s/%s", CacheDir, con->uri + 7); | |
2903 | if (access(filename, F_OK) < 0) | |
2904 | snprintf(filename, len, "%s/images/generic.png", DocumentRoot); | |
2905 | } | |
2906 | else if (!strncmp(con->uri, "/rss/", 5) && !strchr(con->uri + 5, '/')) | |
2907 | snprintf(filename, len, "%s/rss/%s", CacheDir, con->uri + 5); | |
2908 | else if (!strncmp(con->uri, "/admin/conf/", 12)) | |
2909 | snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11); | |
2910 | else if (!strncmp(con->uri, "/admin/log/", 11)) | |
2911 | { | |
2912 | if (!strncmp(con->uri + 11, "access_log", 10) && AccessLog[0] == '/') | |
2913 | strlcpy(filename, AccessLog, len); | |
2914 | else if (!strncmp(con->uri + 11, "error_log", 9) && ErrorLog[0] == '/') | |
2915 | strlcpy(filename, ErrorLog, len); | |
2916 | else if (!strncmp(con->uri + 11, "page_log", 8) && PageLog[0] == '/') | |
2917 | strlcpy(filename, PageLog, len); | |
2918 | else | |
2919 | return (NULL); | |
2920 | } | |
2921 | else if (con->language) | |
2922 | { | |
2923 | snprintf(language, sizeof(language), "/%s", con->language->language); | |
2924 | snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri); | |
2925 | } | |
2926 | else | |
2927 | snprintf(filename, len, "%s%s", DocumentRoot, con->uri); | |
2928 | ||
2929 | if ((ptr = strchr(filename, '?')) != NULL) | |
2930 | *ptr = '\0'; | |
2931 | ||
2932 | /* | |
2933 | * Grab the status for this language; if there isn't a language-specific file | |
2934 | * then fallback to the default one... | |
2935 | */ | |
2936 | ||
2937 | if ((status = stat(filename, filestats)) != 0 && language[0] && | |
2938 | strncmp(con->uri, "/icons/", 7) && | |
2939 | strncmp(con->uri, "/ppd/", 5) && | |
2940 | strncmp(con->uri, "/rss/", 5) && | |
2941 | strncmp(con->uri, "/admin/conf/", 12) && | |
2942 | strncmp(con->uri, "/admin/log/", 11)) | |
2943 | { | |
2944 | /* | |
2945 | * Drop the country code... | |
2946 | */ | |
2947 | ||
2948 | language[3] = '\0'; | |
2949 | snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri); | |
2950 | ||
2951 | if ((ptr = strchr(filename, '?')) != NULL) | |
2952 | *ptr = '\0'; | |
2953 | ||
2954 | if ((status = stat(filename, filestats)) != 0) | |
2955 | { | |
2956 | /* | |
2957 | * Drop the language prefix and try the root directory... | |
2958 | */ | |
2959 | ||
2960 | language[0] = '\0'; | |
2961 | snprintf(filename, len, "%s%s", DocumentRoot, con->uri); | |
2962 | ||
2963 | if ((ptr = strchr(filename, '?')) != NULL) | |
2964 | *ptr = '\0'; | |
2965 | ||
2966 | status = stat(filename, filestats); | |
2967 | } | |
2968 | } | |
2969 | ||
2970 | /* | |
2971 | * If we're found a directory, get the index.html file instead... | |
2972 | */ | |
2973 | ||
2974 | if (!status && S_ISDIR(filestats->st_mode)) | |
2975 | { | |
2976 | /* | |
2977 | * Make sure the URI ends with a slash... | |
2978 | */ | |
2979 | ||
2980 | if (con->uri[strlen(con->uri) - 1] != '/') | |
2981 | strlcat(con->uri, "/", sizeof(con->uri)); | |
2982 | ||
2983 | /* | |
2984 | * Find the directory index file, trying every language... | |
2985 | */ | |
2986 | ||
2987 | do | |
2988 | { | |
2989 | if (status && language[0]) | |
2990 | { | |
2991 | /* | |
2992 | * Try a different language subset... | |
2993 | */ | |
2994 | ||
2995 | if (language[3]) | |
2996 | language[0] = '\0'; /* Strip country code */ | |
2997 | else | |
2998 | language[0] = '\0'; /* Strip language */ | |
2999 | } | |
3000 | ||
3001 | /* | |
3002 | * Look for the index file... | |
3003 | */ | |
3004 | ||
3005 | snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri); | |
3006 | ||
3007 | if ((ptr = strchr(filename, '?')) != NULL) | |
3008 | *ptr = '\0'; | |
3009 | ||
3010 | ptr = filename + strlen(filename); | |
3011 | plen = len - (ptr - filename); | |
3012 | ||
3013 | strlcpy(ptr, "index.html", plen); | |
3014 | status = stat(filename, filestats); | |
3015 | ||
3016 | #ifdef HAVE_JAVA | |
3017 | if (status) | |
3018 | { | |
3019 | strlcpy(ptr, "index.class", plen); | |
3020 | status = stat(filename, filestats); | |
3021 | } | |
3022 | #endif /* HAVE_JAVA */ | |
3023 | ||
3024 | #ifdef HAVE_PERL | |
3025 | if (status) | |
3026 | { | |
3027 | strlcpy(ptr, "index.pl", plen); | |
3028 | status = stat(filename, filestats); | |
3029 | } | |
3030 | #endif /* HAVE_PERL */ | |
3031 | ||
3032 | #ifdef HAVE_PHP | |
3033 | if (status) | |
3034 | { | |
3035 | strlcpy(ptr, "index.php", plen); | |
3036 | status = stat(filename, filestats); | |
3037 | } | |
3038 | #endif /* HAVE_PHP */ | |
3039 | ||
3040 | #ifdef HAVE_PYTHON | |
3041 | if (status) | |
3042 | { | |
3043 | strlcpy(ptr, "index.pyc", plen); | |
3044 | status = stat(filename, filestats); | |
3045 | } | |
3046 | ||
3047 | if (status) | |
3048 | { | |
3049 | strlcpy(ptr, "index.py", plen); | |
3050 | status = stat(filename, filestats); | |
3051 | } | |
3052 | #endif /* HAVE_PYTHON */ | |
3053 | ||
3054 | } | |
3055 | while (status && language[0]); | |
3056 | } | |
3057 | ||
3058 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
3059 | "get_file filestats=%p, filename=%p, len=%d, " | |
3060 | "returning \"%s\".", filestats, filename, len, | |
3061 | status ? "(null)" : filename); | |
3062 | ||
3063 | if (status) | |
3064 | return (NULL); | |
3065 | else | |
3066 | return (filename); | |
3067 | } | |
3068 | ||
3069 | ||
3070 | /* | |
3071 | * 'install_cupsd_conf()' - Install a configuration file. | |
3072 | */ | |
3073 | ||
3074 | static http_status_t /* O - Status */ | |
3075 | install_cupsd_conf(cupsd_client_t *con) /* I - Connection */ | |
3076 | { | |
3077 | char filename[1024]; /* Configuration filename */ | |
3078 | cups_file_t *in, /* Input file */ | |
3079 | *out; /* Output file */ | |
3080 | char buffer[16384]; /* Copy buffer */ | |
3081 | ssize_t bytes; /* Number of bytes */ | |
3082 | ||
3083 | ||
3084 | /* | |
3085 | * Open the request file... | |
3086 | */ | |
3087 | ||
3088 | if ((in = cupsFileOpen(con->filename, "rb")) == NULL) | |
3089 | { | |
3090 | cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to open request file \"%s\": %s", | |
3091 | con->filename, strerror(errno)); | |
3092 | return (HTTP_STATUS_SERVER_ERROR); | |
3093 | } | |
3094 | ||
3095 | /* | |
3096 | * Open the new config file... | |
3097 | */ | |
3098 | ||
3099 | if ((out = cupsdCreateConfFile(ConfigurationFile, ConfigFilePerm)) == NULL) | |
3100 | { | |
3101 | cupsFileClose(in); | |
3102 | return (HTTP_STATUS_SERVER_ERROR); | |
3103 | } | |
3104 | ||
3105 | cupsdLogClient(con, CUPSD_LOG_INFO, "Installing config file \"%s\"...", | |
3106 | ConfigurationFile); | |
3107 | ||
3108 | /* | |
3109 | * Copy from the request to the new config file... | |
3110 | */ | |
3111 | ||
3112 | while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0) | |
3113 | if (cupsFileWrite(out, buffer, (size_t)bytes) < bytes) | |
3114 | { | |
3115 | cupsdLogClient(con, CUPSD_LOG_ERROR, | |
3116 | "Unable to copy to config file \"%s\": %s", | |
3117 | ConfigurationFile, strerror(errno)); | |
3118 | ||
3119 | cupsFileClose(in); | |
3120 | cupsFileClose(out); | |
3121 | ||
3122 | snprintf(filename, sizeof(filename), "%s.N", ConfigurationFile); | |
3123 | cupsdUnlinkOrRemoveFile(filename); | |
3124 | ||
3125 | return (HTTP_STATUS_SERVER_ERROR); | |
3126 | } | |
3127 | ||
3128 | /* | |
3129 | * Close the files... | |
3130 | */ | |
3131 | ||
3132 | cupsFileClose(in); | |
3133 | ||
3134 | if (cupsdCloseCreatedConfFile(out, ConfigurationFile)) | |
3135 | return (HTTP_STATUS_SERVER_ERROR); | |
3136 | ||
3137 | /* | |
3138 | * Remove the request file... | |
3139 | */ | |
3140 | ||
3141 | cupsdUnlinkOrRemoveFile(con->filename); | |
3142 | cupsdClearString(&con->filename); | |
3143 | ||
3144 | /* | |
3145 | * Set the NeedReload flag... | |
3146 | */ | |
3147 | ||
3148 | NeedReload = RELOAD_CUPSD; | |
3149 | ReloadTime = time(NULL); | |
3150 | ||
3151 | /* | |
3152 | * Return that the file was created successfully... | |
3153 | */ | |
3154 | ||
3155 | return (HTTP_STATUS_CREATED); | |
3156 | } | |
3157 | ||
3158 | ||
3159 | /* | |
3160 | * 'is_cgi()' - Is the resource a CGI script/program? | |
3161 | */ | |
3162 | ||
3163 | static int /* O - 1 = CGI, 0 = file */ | |
3164 | is_cgi(cupsd_client_t *con, /* I - Client connection */ | |
3165 | const char *filename, /* I - Real filename */ | |
3166 | struct stat *filestats, /* I - File information */ | |
3167 | mime_type_t *type) /* I - MIME type */ | |
3168 | { | |
3169 | const char *options; /* Options on URL */ | |
3170 | ||
3171 | ||
3172 | /* | |
3173 | * Get the options, if any... | |
3174 | */ | |
3175 | ||
3176 | if ((options = strchr(con->uri, '?')) != NULL) | |
3177 | { | |
3178 | options ++; | |
3179 | cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", options); | |
3180 | } | |
3181 | ||
3182 | /* | |
3183 | * Check for known types... | |
3184 | */ | |
3185 | ||
3186 | if (!type || _cups_strcasecmp(type->super, "application")) | |
3187 | { | |
3188 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
3189 | "is_cgi filename=\"%s\", filestats=%p, " | |
3190 | "type=%s/%s, returning 0", filename, | |
3191 | filestats, type ? type->super : "unknown", | |
3192 | type ? type->type : "unknown"); | |
3193 | return (0); | |
3194 | } | |
3195 | ||
3196 | if (!_cups_strcasecmp(type->type, "x-httpd-cgi") && | |
3197 | (filestats->st_mode & 0111)) | |
3198 | { | |
3199 | /* | |
3200 | * "application/x-httpd-cgi" is a CGI script. | |
3201 | */ | |
3202 | ||
3203 | cupsdSetString(&con->command, filename); | |
3204 | ||
3205 | if (options) | |
3206 | cupsdSetStringf(&con->options, " %s", options); | |
3207 | ||
3208 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
3209 | "is_cgi filename=\"%s\", filestats=%p, " | |
3210 | "type=%s/%s, returning 1", filename, | |
3211 | filestats, type->super, type->type); | |
3212 | return (1); | |
3213 | } | |
3214 | #ifdef HAVE_JAVA | |
3215 | else if (!_cups_strcasecmp(type->type, "x-httpd-java")) | |
3216 | { | |
3217 | /* | |
3218 | * "application/x-httpd-java" is a Java servlet. | |
3219 | */ | |
3220 | ||
3221 | cupsdSetString(&con->command, CUPS_JAVA); | |
3222 | ||
3223 | if (options) | |
3224 | cupsdSetStringf(&con->options, " %s %s", filename, options); | |
3225 | else | |
3226 | cupsdSetStringf(&con->options, " %s", filename); | |
3227 | ||
3228 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
3229 | "is_cgi filename=\"%s\", filestats=%p, " | |
3230 | "type=%s/%s, returning 1", filename, | |
3231 | filestats, type->super, type->type); | |
3232 | return (1); | |
3233 | } | |
3234 | #endif /* HAVE_JAVA */ | |
3235 | #ifdef HAVE_PERL | |
3236 | else if (!_cups_strcasecmp(type->type, "x-httpd-perl")) | |
3237 | { | |
3238 | /* | |
3239 | * "application/x-httpd-perl" is a Perl page. | |
3240 | */ | |
3241 | ||
3242 | cupsdSetString(&con->command, CUPS_PERL); | |
3243 | ||
3244 | if (options) | |
3245 | cupsdSetStringf(&con->options, " %s %s", filename, options); | |
3246 | else | |
3247 | cupsdSetStringf(&con->options, " %s", filename); | |
3248 | ||
3249 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
3250 | "is_cgi filename=\"%s\", filestats=%p, " | |
3251 | "type=%s/%s, returning 1", filename, | |
3252 | filestats, type->super, type->type); | |
3253 | return (1); | |
3254 | } | |
3255 | #endif /* HAVE_PERL */ | |
3256 | #ifdef HAVE_PHP | |
3257 | else if (!_cups_strcasecmp(type->type, "x-httpd-php")) | |
3258 | { | |
3259 | /* | |
3260 | * "application/x-httpd-php" is a PHP page. | |
3261 | */ | |
3262 | ||
3263 | cupsdSetString(&con->command, CUPS_PHP); | |
3264 | ||
3265 | if (options) | |
3266 | cupsdSetStringf(&con->options, " %s %s", filename, options); | |
3267 | else | |
3268 | cupsdSetStringf(&con->options, " %s", filename); | |
3269 | ||
3270 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
3271 | "is_cgi filename=\"%s\", filestats=%p, " | |
3272 | "type=%s/%s, returning 1", filename, | |
3273 | filestats, type->super, type->type); | |
3274 | return (1); | |
3275 | } | |
3276 | #endif /* HAVE_PHP */ | |
3277 | #ifdef HAVE_PYTHON | |
3278 | else if (!_cups_strcasecmp(type->type, "x-httpd-python")) | |
3279 | { | |
3280 | /* | |
3281 | * "application/x-httpd-python" is a Python page. | |
3282 | */ | |
3283 | ||
3284 | cupsdSetString(&con->command, CUPS_PYTHON); | |
3285 | ||
3286 | if (options) | |
3287 | cupsdSetStringf(&con->options, " %s %s", filename, options); | |
3288 | else | |
3289 | cupsdSetStringf(&con->options, " %s", filename); | |
3290 | ||
3291 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
3292 | "is_cgi filename=\"%s\", filestats=%p, " | |
3293 | "type=%s/%s, returning 1", filename, | |
3294 | filestats, type->super, type->type); | |
3295 | return (1); | |
3296 | } | |
3297 | #endif /* HAVE_PYTHON */ | |
3298 | ||
3299 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
3300 | "is_cgi filename=\"%s\", filestats=%p, " | |
3301 | "type=%s/%s, returning 0", filename, | |
3302 | filestats, type->super, type->type); | |
3303 | return (0); | |
3304 | } | |
3305 | ||
3306 | ||
3307 | /* | |
3308 | * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. ".."). | |
3309 | */ | |
3310 | ||
3311 | static int /* O - 0 if relative, 1 if absolute */ | |
3312 | is_path_absolute(const char *path) /* I - Input path */ | |
3313 | { | |
3314 | /* | |
3315 | * Check for a leading slash... | |
3316 | */ | |
3317 | ||
3318 | if (path[0] != '/') | |
3319 | return (0); | |
3320 | ||
3321 | /* | |
3322 | * Check for "/.." in the path... | |
3323 | */ | |
3324 | ||
3325 | while ((path = strstr(path, "/..")) != NULL) | |
3326 | { | |
3327 | if (!path[3] || path[3] == '/') | |
3328 | return (0); | |
3329 | ||
3330 | path ++; | |
3331 | } | |
3332 | ||
3333 | /* | |
3334 | * If we haven't found any relative paths, return 1 indicating an | |
3335 | * absolute path... | |
3336 | */ | |
3337 | ||
3338 | return (1); | |
3339 | } | |
3340 | ||
3341 | ||
3342 | /* | |
3343 | * 'pipe_command()' - Pipe the output of a command to the remote client. | |
3344 | */ | |
3345 | ||
3346 | static int /* O - Process ID */ | |
3347 | pipe_command(cupsd_client_t *con, /* I - Client connection */ | |
3348 | int infile, /* I - Standard input for command */ | |
3349 | int *outfile, /* O - Standard output for command */ | |
3350 | char *command, /* I - Command to run */ | |
3351 | char *options, /* I - Options for command */ | |
3352 | int root) /* I - Run as root? */ | |
3353 | { | |
3354 | int i; /* Looping var */ | |
3355 | int pid; /* Process ID */ | |
3356 | char *commptr, /* Command string pointer */ | |
3357 | commch; /* Command string character */ | |
3358 | char *uriptr; /* URI string pointer */ | |
3359 | int fds[2]; /* Pipe FDs */ | |
3360 | int argc; /* Number of arguments */ | |
3361 | int envc; /* Number of environment variables */ | |
3362 | char argbuf[10240], /* Argument buffer */ | |
3363 | *argv[100], /* Argument strings */ | |
3364 | *envp[MAX_ENV + 20]; /* Environment variables */ | |
3365 | char auth_type[256], /* AUTH_TYPE environment variable */ | |
3366 | content_length[1024], /* CONTENT_LENGTH environment variable */ | |
3367 | content_type[1024], /* CONTENT_TYPE environment variable */ | |
3368 | http_cookie[32768], /* HTTP_COOKIE environment variable */ | |
3369 | http_referer[1024], /* HTTP_REFERER environment variable */ | |
3370 | http_user_agent[1024], /* HTTP_USER_AGENT environment variable */ | |
3371 | lang[1024], /* LANG environment variable */ | |
3372 | path_info[1024], /* PATH_INFO environment variable */ | |
3373 | remote_addr[1024], /* REMOTE_ADDR environment variable */ | |
3374 | remote_host[1024], /* REMOTE_HOST environment variable */ | |
3375 | remote_user[1024], /* REMOTE_USER environment variable */ | |
3376 | script_filename[1024], /* SCRIPT_FILENAME environment variable */ | |
3377 | script_name[1024], /* SCRIPT_NAME environment variable */ | |
3378 | server_name[1024], /* SERVER_NAME environment variable */ | |
3379 | server_port[1024]; /* SERVER_PORT environment variable */ | |
3380 | ipp_attribute_t *attr; /* attributes-natural-language attribute */ | |
3381 | ||
3382 | ||
3383 | /* | |
3384 | * Parse a copy of the options string, which is of the form: | |
3385 | * | |
3386 | * argument+argument+argument | |
3387 | * ?argument+argument+argument | |
3388 | * param=value¶m=value | |
3389 | * ?param=value¶m=value | |
3390 | * /name?argument+argument+argument | |
3391 | * /name?param=value¶m=value | |
3392 | * | |
3393 | * If the string contains an "=" character after the initial name, | |
3394 | * then we treat it as a HTTP GET form request and make a copy of | |
3395 | * the remaining string for the environment variable. | |
3396 | * | |
3397 | * The string is always parsed out as command-line arguments, to | |
3398 | * be consistent with Apache... | |
3399 | */ | |
3400 | ||
3401 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
3402 | "pipe_command infile=%d, outfile=%p, " | |
3403 | "command=\"%s\", options=\"%s\", root=%d", | |
3404 | infile, outfile, command, | |
3405 | options ? options : "(null)", root); | |
3406 | ||
3407 | argv[0] = command; | |
3408 | ||
3409 | if (options) | |
3410 | { | |
3411 | commptr = options; | |
3412 | if (*commptr == ' ') | |
3413 | commptr ++; | |
3414 | strlcpy(argbuf, commptr, sizeof(argbuf)); | |
3415 | } | |
3416 | else | |
3417 | argbuf[0] = '\0'; | |
3418 | ||
3419 | if (argbuf[0] == '/') | |
3420 | { | |
3421 | /* | |
3422 | * Found some trailing path information, set PATH_INFO... | |
3423 | */ | |
3424 | ||
3425 | if ((commptr = strchr(argbuf, '?')) == NULL) | |
3426 | commptr = argbuf + strlen(argbuf); | |
3427 | ||
3428 | commch = *commptr; | |
3429 | *commptr = '\0'; | |
3430 | snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf); | |
3431 | *commptr = commch; | |
3432 | } | |
3433 | else | |
3434 | { | |
3435 | commptr = argbuf; | |
3436 | path_info[0] = '\0'; | |
3437 | ||
3438 | if (*commptr == ' ') | |
3439 | commptr ++; | |
3440 | } | |
3441 | ||
3442 | if (*commptr == '?' && con->operation == HTTP_STATE_GET && !con->query_string) | |
3443 | { | |
3444 | commptr ++; | |
3445 | cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr); | |
3446 | } | |
3447 | ||
3448 | argc = 1; | |
3449 | ||
3450 | if (*commptr) | |
3451 | { | |
3452 | argv[argc ++] = commptr; | |
3453 | ||
3454 | for (; *commptr && argc < 99; commptr ++) | |
3455 | { | |
3456 | /* | |
3457 | * Break arguments whenever we see a + or space... | |
3458 | */ | |
3459 | ||
3460 | if (*commptr == ' ' || *commptr == '+') | |
3461 | { | |
3462 | while (*commptr == ' ' || *commptr == '+') | |
3463 | *commptr++ = '\0'; | |
3464 | ||
3465 | /* | |
3466 | * If we don't have a blank string, save it as another argument... | |
3467 | */ | |
3468 | ||
3469 | if (*commptr) | |
3470 | { | |
3471 | argv[argc] = commptr; | |
3472 | argc ++; | |
3473 | } | |
3474 | else | |
3475 | break; | |
3476 | } | |
3477 | else if (*commptr == '%' && isxdigit(commptr[1] & 255) && | |
3478 | isxdigit(commptr[2] & 255)) | |
3479 | { | |
3480 | /* | |
3481 | * Convert the %xx notation to the individual character. | |
3482 | */ | |
3483 | ||
3484 | if (commptr[1] >= '0' && commptr[1] <= '9') | |
3485 | *commptr = (char)((commptr[1] - '0') << 4); | |
3486 | else | |
3487 | *commptr = (char)((tolower(commptr[1]) - 'a' + 10) << 4); | |
3488 | ||
3489 | if (commptr[2] >= '0' && commptr[2] <= '9') | |
3490 | *commptr |= commptr[2] - '0'; | |
3491 | else | |
3492 | *commptr |= tolower(commptr[2]) - 'a' + 10; | |
3493 | ||
3494 | _cups_strcpy(commptr + 1, commptr + 3); | |
3495 | ||
3496 | /* | |
3497 | * Check for a %00 and break if that is the case... | |
3498 | */ | |
3499 | ||
3500 | if (!*commptr) | |
3501 | break; | |
3502 | } | |
3503 | } | |
3504 | } | |
3505 | ||
3506 | argv[argc] = NULL; | |
3507 | ||
3508 | /* | |
3509 | * Setup the environment variables as needed... | |
3510 | */ | |
3511 | ||
3512 | if (con->username[0]) | |
3513 | { | |
3514 | snprintf(auth_type, sizeof(auth_type), "AUTH_TYPE=%s", | |
3515 | httpGetField(con->http, HTTP_FIELD_AUTHORIZATION)); | |
3516 | ||
3517 | if ((uriptr = strchr(auth_type + 10, ' ')) != NULL) | |
3518 | *uriptr = '\0'; | |
3519 | } | |
3520 | else | |
3521 | auth_type[0] = '\0'; | |
3522 | ||
3523 | if (con->request && | |
3524 | (attr = ippFindAttribute(con->request, "attributes-natural-language", | |
3525 | IPP_TAG_LANGUAGE)) != NULL) | |
3526 | { | |
3527 | switch (strlen(attr->values[0].string.text)) | |
3528 | { | |
3529 | default : | |
3530 | /* | |
3531 | * This is an unknown or badly formatted language code; use | |
3532 | * the POSIX locale... | |
3533 | */ | |
3534 | ||
3535 | strlcpy(lang, "LANG=C", sizeof(lang)); | |
3536 | break; | |
3537 | ||
3538 | case 2 : | |
3539 | /* | |
3540 | * Just the language code (ll)... | |
3541 | */ | |
3542 | ||
3543 | snprintf(lang, sizeof(lang), "LANG=%s.UTF8", | |
3544 | attr->values[0].string.text); | |
3545 | break; | |
3546 | ||
3547 | case 5 : | |
3548 | /* | |
3549 | * Language and country code (ll-cc)... | |
3550 | */ | |
3551 | ||
3552 | snprintf(lang, sizeof(lang), "LANG=%c%c_%c%c.UTF8", | |
3553 | attr->values[0].string.text[0], | |
3554 | attr->values[0].string.text[1], | |
3555 | toupper(attr->values[0].string.text[3] & 255), | |
3556 | toupper(attr->values[0].string.text[4] & 255)); | |
3557 | break; | |
3558 | } | |
3559 | } | |
3560 | else if (con->language) | |
3561 | snprintf(lang, sizeof(lang), "LANG=%s.UTF8", con->language->language); | |
3562 | else | |
3563 | strlcpy(lang, "LANG=C", sizeof(lang)); | |
3564 | ||
3565 | strlcpy(remote_addr, "REMOTE_ADDR=", sizeof(remote_addr)); | |
3566 | httpAddrString(httpGetAddress(con->http), remote_addr + 12, | |
3567 | sizeof(remote_addr) - 12); | |
3568 | ||
3569 | snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s", | |
3570 | httpGetHostname(con->http, NULL, 0)); | |
3571 | ||
3572 | snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri); | |
3573 | if ((uriptr = strchr(script_name, '?')) != NULL) | |
3574 | *uriptr = '\0'; | |
3575 | ||
3576 | snprintf(script_filename, sizeof(script_filename), "SCRIPT_FILENAME=%s%s", | |
3577 | DocumentRoot, script_name + 12); | |
3578 | ||
3579 | sprintf(server_port, "SERVER_PORT=%d", con->serverport); | |
3580 | ||
3581 | if (httpGetField(con->http, HTTP_FIELD_HOST)[0]) | |
3582 | { | |
3583 | char *nameptr; /* Pointer to ":port" */ | |
3584 | ||
3585 | snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s", | |
3586 | httpGetField(con->http, HTTP_FIELD_HOST)); | |
3587 | if ((nameptr = strrchr(server_name, ':')) != NULL && !strchr(nameptr, ']')) | |
3588 | *nameptr = '\0'; /* Strip trailing ":port" */ | |
3589 | } | |
3590 | else | |
3591 | snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s", | |
3592 | con->servername); | |
3593 | ||
3594 | envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0]))); | |
3595 | ||
3596 | if (auth_type[0]) | |
3597 | envp[envc ++] = auth_type; | |
3598 | ||
3599 | envp[envc ++] = lang; | |
3600 | envp[envc ++] = "REDIRECT_STATUS=1"; | |
3601 | envp[envc ++] = "GATEWAY_INTERFACE=CGI/1.1"; | |
3602 | envp[envc ++] = server_name; | |
3603 | envp[envc ++] = server_port; | |
3604 | envp[envc ++] = remote_addr; | |
3605 | envp[envc ++] = remote_host; | |
3606 | envp[envc ++] = script_name; | |
3607 | envp[envc ++] = script_filename; | |
3608 | ||
3609 | if (path_info[0]) | |
3610 | envp[envc ++] = path_info; | |
3611 | ||
3612 | if (con->username[0]) | |
3613 | { | |
3614 | snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username); | |
3615 | ||
3616 | envp[envc ++] = remote_user; | |
3617 | } | |
3618 | ||
3619 | if (httpGetVersion(con->http) == HTTP_VERSION_1_1) | |
3620 | envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1"; | |
3621 | else if (httpGetVersion(con->http) == HTTP_VERSION_1_0) | |
3622 | envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0"; | |
3623 | else | |
3624 | envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9"; | |
3625 | ||
3626 | if (httpGetCookie(con->http)) | |
3627 | { | |
3628 | snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s", | |
3629 | httpGetCookie(con->http)); | |
3630 | envp[envc ++] = http_cookie; | |
3631 | } | |
3632 | ||
3633 | if (httpGetField(con->http, HTTP_FIELD_USER_AGENT)[0]) | |
3634 | { | |
3635 | snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s", | |
3636 | httpGetField(con->http, HTTP_FIELD_USER_AGENT)); | |
3637 | envp[envc ++] = http_user_agent; | |
3638 | } | |
3639 | ||
3640 | if (httpGetField(con->http, HTTP_FIELD_REFERER)[0]) | |
3641 | { | |
3642 | snprintf(http_referer, sizeof(http_referer), "HTTP_REFERER=%s", | |
3643 | httpGetField(con->http, HTTP_FIELD_REFERER)); | |
3644 | envp[envc ++] = http_referer; | |
3645 | } | |
3646 | ||
3647 | if (con->operation == HTTP_STATE_GET) | |
3648 | { | |
3649 | envp[envc ++] = "REQUEST_METHOD=GET"; | |
3650 | ||
3651 | if (con->query_string) | |
3652 | { | |
3653 | /* | |
3654 | * Add GET form variables after ?... | |
3655 | */ | |
3656 | ||
3657 | envp[envc ++] = con->query_string; | |
3658 | } | |
3659 | else | |
3660 | envp[envc ++] = "QUERY_STRING="; | |
3661 | } | |
3662 | else | |
3663 | { | |
3664 | sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT, | |
3665 | CUPS_LLCAST con->bytes); | |
3666 | snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s", | |
3667 | httpGetField(con->http, HTTP_FIELD_CONTENT_TYPE)); | |
3668 | ||
3669 | envp[envc ++] = "REQUEST_METHOD=POST"; | |
3670 | envp[envc ++] = content_length; | |
3671 | envp[envc ++] = content_type; | |
3672 | } | |
3673 | ||
3674 | /* | |
3675 | * Tell the CGI if we are using encryption... | |
3676 | */ | |
3677 | ||
3678 | if (httpIsEncrypted(con->http)) | |
3679 | envp[envc ++] = "HTTPS=ON"; | |
3680 | ||
3681 | /* | |
3682 | * Terminate the environment array... | |
3683 | */ | |
3684 | ||
3685 | envp[envc] = NULL; | |
3686 | ||
3687 | if (LogLevel >= CUPSD_LOG_DEBUG) | |
3688 | { | |
3689 | for (i = 0; i < argc; i ++) | |
3690 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
3691 | "[CGI] argv[%d] = \"%s\"", i, argv[i]); | |
3692 | for (i = 0; i < envc; i ++) | |
3693 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
3694 | "[CGI] envp[%d] = \"%s\"", i, envp[i]); | |
3695 | } | |
3696 | ||
3697 | /* | |
3698 | * Create a pipe for the output... | |
3699 | */ | |
3700 | ||
3701 | if (cupsdOpenPipe(fds)) | |
3702 | { | |
3703 | cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to create pipe for %s - %s", | |
3704 | argv[0], strerror(errno)); | |
3705 | return (0); | |
3706 | } | |
3707 | ||
3708 | /* | |
3709 | * Then execute the command... | |
3710 | */ | |
3711 | ||
3712 | if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1], | |
3713 | -1, -1, root, DefaultProfile, NULL, &pid) < 0) | |
3714 | { | |
3715 | /* | |
3716 | * Error - can't fork! | |
3717 | */ | |
3718 | ||
3719 | cupsdLogMessage(CUPSD_LOG_ERROR, "[CGI] Unable to start %s - %s", argv[0], | |
3720 | strerror(errno)); | |
3721 | ||
3722 | cupsdClosePipe(fds); | |
3723 | pid = 0; | |
3724 | } | |
3725 | else | |
3726 | { | |
3727 | /* | |
3728 | * Fork successful - return the PID... | |
3729 | */ | |
3730 | ||
3731 | if (con->username[0]) | |
3732 | cupsdAddCert(pid, con->username, con->type); | |
3733 | ||
3734 | cupsdLogMessage(CUPSD_LOG_DEBUG, "[CGI] Started %s (PID %d)", command, pid); | |
3735 | ||
3736 | *outfile = fds[0]; | |
3737 | close(fds[1]); | |
3738 | } | |
3739 | ||
3740 | return (pid); | |
3741 | } | |
3742 | ||
3743 | ||
3744 | /* | |
3745 | * 'valid_host()' - Is the Host: field valid? | |
3746 | */ | |
3747 | ||
3748 | static int /* O - 1 if valid, 0 if not */ | |
3749 | valid_host(cupsd_client_t *con) /* I - Client connection */ | |
3750 | { | |
3751 | cupsd_alias_t *a; /* Current alias */ | |
3752 | cupsd_netif_t *netif; /* Current network interface */ | |
3753 | const char *end; /* End character */ | |
3754 | char *ptr; /* Pointer into host value */ | |
3755 | ||
3756 | ||
3757 | /* | |
3758 | * Copy the Host: header for later use... | |
3759 | */ | |
3760 | ||
3761 | strlcpy(con->clientname, httpGetField(con->http, HTTP_FIELD_HOST), | |
3762 | sizeof(con->clientname)); | |
3763 | if ((ptr = strrchr(con->clientname, ':')) != NULL && !strchr(ptr, ']')) | |
3764 | { | |
3765 | *ptr++ = '\0'; | |
3766 | con->clientport = atoi(ptr); | |
3767 | } | |
3768 | else | |
3769 | con->clientport = con->serverport; | |
3770 | ||
3771 | /* | |
3772 | * Then validate... | |
3773 | */ | |
3774 | ||
3775 | if (httpAddrLocalhost(httpGetAddress(con->http))) | |
3776 | { | |
3777 | /* | |
3778 | * Only allow "localhost" or the equivalent IPv4 or IPv6 numerical | |
3779 | * addresses when accessing CUPS via the loopback interface... | |
3780 | */ | |
3781 | ||
3782 | return (!_cups_strcasecmp(con->clientname, "localhost") || | |
3783 | !_cups_strcasecmp(con->clientname, "localhost.") || | |
3784 | #ifdef __linux | |
3785 | !_cups_strcasecmp(con->clientname, "localhost.localdomain") || | |
3786 | #endif /* __linux */ | |
3787 | !strcmp(con->clientname, "127.0.0.1") || | |
3788 | !strcmp(con->clientname, "[::1]")); | |
3789 | } | |
3790 | ||
3791 | #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI) | |
3792 | /* | |
3793 | * Check if the hostname is something.local (Bonjour); if so, allow it. | |
3794 | */ | |
3795 | ||
3796 | if ((end = strrchr(con->clientname, '.')) != NULL && end > con->clientname && | |
3797 | !end[1]) | |
3798 | { | |
3799 | /* | |
3800 | * "." on end, work back to second-to-last "."... | |
3801 | */ | |
3802 | ||
3803 | for (end --; end > con->clientname && *end != '.'; end --); | |
3804 | } | |
3805 | ||
3806 | if (end && (!_cups_strcasecmp(end, ".local") || | |
3807 | !_cups_strcasecmp(end, ".local."))) | |
3808 | return (1); | |
3809 | #endif /* HAVE_DNSSD || HAVE_AVAHI */ | |
3810 | ||
3811 | /* | |
3812 | * Check if the hostname is an IP address... | |
3813 | */ | |
3814 | ||
3815 | if (isdigit(con->clientname[0] & 255) || con->clientname[0] == '[') | |
3816 | { | |
3817 | /* | |
3818 | * Possible IPv4/IPv6 address... | |
3819 | */ | |
3820 | ||
3821 | http_addrlist_t *addrlist; /* List of addresses */ | |
3822 | ||
3823 | ||
3824 | if ((addrlist = httpAddrGetList(con->clientname, AF_UNSPEC, NULL)) != NULL) | |
3825 | { | |
3826 | /* | |
3827 | * Good IPv4/IPv6 address... | |
3828 | */ | |
3829 | ||
3830 | httpAddrFreeList(addrlist); | |
3831 | return (1); | |
3832 | } | |
3833 | } | |
3834 | ||
3835 | /* | |
3836 | * Check for (alias) name matches... | |
3837 | */ | |
3838 | ||
3839 | for (a = (cupsd_alias_t *)cupsArrayFirst(ServerAlias); | |
3840 | a; | |
3841 | a = (cupsd_alias_t *)cupsArrayNext(ServerAlias)) | |
3842 | { | |
3843 | /* | |
3844 | * "ServerAlias *" allows all host values through... | |
3845 | */ | |
3846 | ||
3847 | if (!strcmp(a->name, "*")) | |
3848 | return (1); | |
3849 | ||
3850 | if (!_cups_strncasecmp(con->clientname, a->name, a->namelen)) | |
3851 | { | |
3852 | /* | |
3853 | * Prefix matches; check the character at the end - it must be "." or nul. | |
3854 | */ | |
3855 | ||
3856 | end = con->clientname + a->namelen; | |
3857 | ||
3858 | if (!*end || (*end == '.' && !end[1])) | |
3859 | return (1); | |
3860 | } | |
3861 | } | |
3862 | ||
3863 | #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI) | |
3864 | for (a = (cupsd_alias_t *)cupsArrayFirst(DNSSDAlias); | |
3865 | a; | |
3866 | a = (cupsd_alias_t *)cupsArrayNext(DNSSDAlias)) | |
3867 | { | |
3868 | /* | |
3869 | * "ServerAlias *" allows all host values through... | |
3870 | */ | |
3871 | ||
3872 | if (!strcmp(a->name, "*")) | |
3873 | return (1); | |
3874 | ||
3875 | if (!_cups_strncasecmp(con->clientname, a->name, a->namelen)) | |
3876 | { | |
3877 | /* | |
3878 | * Prefix matches; check the character at the end - it must be "." or nul. | |
3879 | */ | |
3880 | ||
3881 | end = con->clientname + a->namelen; | |
3882 | ||
3883 | if (!*end || (*end == '.' && !end[1])) | |
3884 | return (1); | |
3885 | } | |
3886 | } | |
3887 | #endif /* HAVE_DNSSD || HAVE_AVAHI */ | |
3888 | ||
3889 | /* | |
3890 | * Check for interface hostname matches... | |
3891 | */ | |
3892 | ||
3893 | for (netif = (cupsd_netif_t *)cupsArrayFirst(NetIFList); | |
3894 | netif; | |
3895 | netif = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
3896 | { | |
3897 | if (!_cups_strncasecmp(con->clientname, netif->hostname, netif->hostlen)) | |
3898 | { | |
3899 | /* | |
3900 | * Prefix matches; check the character at the end - it must be "." or nul. | |
3901 | */ | |
3902 | ||
3903 | end = con->clientname + netif->hostlen; | |
3904 | ||
3905 | if (!*end || (*end == '.' && !end[1])) | |
3906 | return (1); | |
3907 | } | |
3908 | } | |
3909 | ||
3910 | return (0); | |
3911 | } | |
3912 | ||
3913 | ||
3914 | /* | |
3915 | * 'write_file()' - Send a file via HTTP. | |
3916 | */ | |
3917 | ||
3918 | static int /* O - 0 on failure, 1 on success */ | |
3919 | write_file(cupsd_client_t *con, /* I - Client connection */ | |
3920 | http_status_t code, /* I - HTTP status */ | |
3921 | char *filename, /* I - Filename */ | |
3922 | char *type, /* I - File type */ | |
3923 | struct stat *filestats) /* O - File information */ | |
3924 | { | |
3925 | con->file = open(filename, O_RDONLY); | |
3926 | ||
3927 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, | |
3928 | "write_file code=%d, filename=\"%s\" (%d), " | |
3929 | "type=\"%s\", filestats=%p", | |
3930 | code, filename, con->file, type ? type : "(null)", filestats); | |
3931 | ||
3932 | if (con->file < 0) | |
3933 | return (0); | |
3934 | ||
3935 | fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC); | |
3936 | ||
3937 | con->pipe_pid = 0; | |
3938 | con->sent_header = 1; | |
3939 | ||
3940 | httpClearFields(con->http); | |
3941 | ||
3942 | httpSetLength(con->http, (size_t)filestats->st_size); | |
3943 | ||
3944 | httpSetField(con->http, HTTP_FIELD_LAST_MODIFIED, | |
3945 | httpGetDateString(filestats->st_mtime)); | |
3946 | ||
3947 | if (!cupsdSendHeader(con, code, type, CUPSD_AUTH_NONE)) | |
3948 | return (0); | |
3949 | ||
3950 | cupsdAddSelect(httpGetFd(con->http), NULL, (cupsd_selfunc_t)cupsdWriteClient, con); | |
3951 | ||
3952 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "Sending file."); | |
3953 | ||
3954 | return (1); | |
3955 | } | |
3956 | ||
3957 | ||
3958 | /* | |
3959 | * 'write_pipe()' - Flag that data is available on the CGI pipe. | |
3960 | */ | |
3961 | ||
3962 | static void | |
3963 | write_pipe(cupsd_client_t *con) /* I - Client connection */ | |
3964 | { | |
3965 | cupsdLogClient(con, CUPSD_LOG_DEBUG2, "write_pipe CGI output on fd %d", | |
3966 | con->file); | |
3967 | ||
3968 | con->file_ready = 1; | |
3969 | ||
3970 | cupsdRemoveSelect(con->file); | |
3971 | cupsdAddSelect(httpGetFd(con->http), NULL, (cupsd_selfunc_t)cupsdWriteClient, con); | |
3972 | ||
3973 | cupsdLogClient(con, CUPSD_LOG_DEBUG, "CGI data ready to be sent."); | |
3974 | } | |
3975 | ||
3976 | ||
3977 | /* | |
3978 | * End of "$Id$". | |
3979 | */ |