]> git.ipfire.org Git - thirdparty/cups.git/blame - scheduler/client.c
projects / thirdparty / cups.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge changes from CUPS 1.4svn-r8346.
[thirdparty/cups.git] / scheduler / client.c
CommitLineData
ef416fc2 1/*
b19ccc9e 2 * "$Id: client.c 7950 2008-09-17 00:21:59Z mike $"
ef416fc2 3 *
4 * Client routines for the Common UNIX Printing System (CUPS) scheduler.
5 *
d1c13e16 6 * Copyright 2007-2009 by Apple Inc.
f7deaa1a 7 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
8 *
9 * This file contains Kerberos support code, copyright 2006 by
10 * Jelmer Vernooij.
ef416fc2 11 *
12 * These coded instructions, statements, and computer programs are the
bc44d920 13 * property of Apple Inc. and are protected by Federal copyright
14 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
15 * which should have been included with this file. If this file is
16 * file is missing or damaged, see the license at "http://www.cups.org/".
ef416fc2 17 *
18 * Contents:
19 *
20 * cupsdAcceptClient() - Accept a new client.
21 * cupsdCloseAllClients() - Close all remote clients immediately.
22 * cupsdCloseClient() - Close a remote client.
d09495fa 23 * cupsdFlushHeader() - Flush the header fields to the client.
ef416fc2 24 * cupsdReadClient() - Read data from a client.
25 * cupsdSendCommand() - Send output from a command via HTTP.
26 * cupsdSendError() - Send an error message via HTTP.
ef416fc2 27 * cupsdSendHeader() - Send an HTTP request.
28 * cupsdUpdateCGI() - Read status messages from CGI scripts and programs.
29 * cupsdWriteClient() - Write data to a client as needed.
30 * check_if_modified() - Decode an "If-Modified-Since" line.
3dfe78b3 31 * compare_clients() - Compare two client connections.
ee571f26 32 * data_ready() - Check whether data is available from a client.
e1d6a774 33 * encrypt_client() - Enable encryption for the client...
b86bc4cf 34 * get_cdsa_certificate() - Convert a keychain name into the CFArrayRef
ef416fc2 35 * required by SSLSetCertificate.
36 * get_file() - Get a filename and state info.
37 * install_conf_file() - Install a configuration file.
e1d6a774 38 * is_cgi() - Is the resource a CGI script/program?
ef416fc2 39 * is_path_absolute() - Is a path absolute and free of relative elements.
4744bd90 40 * make_certificate() - Make a self-signed SSL/TLS certificate.
ef416fc2 41 * pipe_command() - Pipe the output of a command to the remote client.
a74454a7 42 * write_file() - Send a file via HTTP.
f899b121 43 * write_pipe() - Flag that data is available on the CGI pipe.
ef416fc2 44 */
45
46/*
47 * Include necessary headers...
48 */
49
ef416fc2 50#include "cupsd.h"
51
52#ifdef HAVE_CDSASSL
53# include <Security/Security.h>
b86bc4cf 54# ifdef HAVE_SECIDENTITYSEARCHPRIV_H
55# include <Security/SecIdentitySearchPriv.h>
56# else /* Declare prototype for function in that header... */
57extern OSStatus SecIdentitySearchCreateWithPolicy(SecPolicyRef policy,
58 CFStringRef idString, CSSM_KEYUSE keyUsage,
59 CFTypeRef keychainOrArray,
60 Boolean returnOnlyValidIdentities,
61 SecIdentitySearchRef* searchRef);
62# endif /* HAVE_SECIDENTITYSEARCHPRIV_H */
63# ifdef HAVE_SECPOLICYPRIV_H
64# include <Security/SecPolicyPriv.h>
65# else /* Declare prototype for function in that header... */
66extern OSStatus SecPolicySetValue(SecPolicyRef policyRef,
67 const CSSM_DATA *value);
68# endif /* HAVE_SECPOLICYPRIV_H */
ed486911 69# ifdef HAVE_SECBASEPRIV_H
70# include <Security/SecBasePriv.h>
b86bc4cf 71# else /* Declare prototype for function in that header... */
72extern const char *cssmErrorString(int error);
ed486911 73# endif /* HAVE_SECBASEPRIV_H */
ef416fc2 74#endif /* HAVE_CDSASSL */
b86bc4cf 75
4744bd90 76#ifdef HAVE_GNUTLS
77# include <gnutls/x509.h>
78#endif /* HAVE_GNUTLS */
ef416fc2 79
749b1e90
MS		 80#ifdef HAVE_TCPD_H
81# include <tcpd.h>
82#endif /* HAVE_TCPD_H */
83
ef416fc2 84
85/*
86 * Local functions...
87 */
88
89static int check_if_modified(cupsd_client_t *con,
90 struct stat *filestats);
3dfe78b3
MS		 91static int compare_clients(cupsd_client_t *a, cupsd_client_t *b,
92 void *data);
ee571f26 93static int data_ready(cupsd_client_t *con);
80ca4592 94#ifdef HAVE_SSL
e1d6a774 95static int encrypt_client(cupsd_client_t *con);
80ca4592 96#endif /* HAVE_SSL */
ef416fc2 97#ifdef HAVE_CDSASSL
b86bc4cf 98static CFArrayRef get_cdsa_certificate(cupsd_client_t *con);
ef416fc2 99#endif /* HAVE_CDSASSL */
f7deaa1a 100static char *get_file(cupsd_client_t *con, struct stat *filestats,
ef416fc2 101 char *filename, int len);
102static http_status_t install_conf_file(cupsd_client_t *con);
e1d6a774 103static int is_cgi(cupsd_client_t *con, const char *filename,
104 struct stat *filestats, mime_type_t *type);
ef416fc2 105static int is_path_absolute(const char *path);
8ca02f3c 106#ifdef HAVE_SSL
b86bc4cf 107static int make_certificate(cupsd_client_t *con);
8ca02f3c 108#endif /* HAVE_SSL */
ef416fc2 109static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
110 char *command, char *options, int root);
a74454a7 111static int write_file(cupsd_client_t *con, http_status_t code,
112 char *filename, char *type,
113 struct stat *filestats);
f899b121 114static void write_pipe(cupsd_client_t *con);
ef416fc2 115
116
117/*
118 * 'cupsdAcceptClient()' - Accept a new client.
119 */
120
121void
122cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
123{
ef416fc2 124 int count; /* Count of connections on a host */
125 int val; /* Parameter value */
bd7854cb 126 cupsd_client_t *con, /* New client pointer */
127 *tempcon; /* Temporary client pointer */
ef416fc2 128 http_addrlist_t *addrlist, /* List of adddresses for host */
129 *addr; /* Current address */
130 socklen_t addrlen; /* Length of address */
131 char *hostname; /* Hostname for address */
132 http_addr_t temp; /* Temporary address variable */
133 static time_t last_dos = 0; /* Time of last DoS attack */
749b1e90
MS		 134#ifdef HAVE_TCPD_H
135 struct request_info wrap_req; /* TCP wrappers request information */
136#endif /* HAVE_TCPD_H */
ef416fc2 137
138
139 cupsdLogMessage(CUPSD_LOG_DEBUG2,
bd7854cb 140 "cupsdAcceptClient(lis=%p) %d Clients = %d",
141 lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 142
143 /*
144 * Make sure we don't have a full set of clients already...
145 */
146
bd7854cb 147 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 148 return;
149
150 /*
151 * Get a pointer to the next available client...
152 */
153
bd7854cb 154 if (!Clients)
155 Clients = cupsArrayNew(NULL, NULL);
156
157 if (!Clients)
91c84a35
MS		 158 {
159 cupsdLogMessage(CUPSD_LOG_ERROR,
3dfe78b3
MS		 160 "Unable to allocate memory for clients array!");
161 cupsdPauseListening();
162 return;
163 }
164
165 if (!ActiveClients)
166 ActiveClients = cupsArrayNew((cups_array_func_t)compare_clients, NULL);
167
168 if (!ActiveClients)
169 {
170 cupsdLogMessage(CUPSD_LOG_ERROR,
171 "Unable to allocate memory for active clients array!");
91c84a35 172 cupsdPauseListening();
bd7854cb 173 return;
91c84a35 174 }
bd7854cb 175
91c84a35
MS		 176 if ((con = calloc(1, sizeof(cupsd_client_t))) == NULL)
177 {
178 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to allocate memory for client!");
179 cupsdPauseListening();
180 return;
181 }
ef416fc2 182
ef416fc2 183 con->http.activity = time(NULL);
184 con->file = -1;
185 con->http.hostaddr = &(con->clientaddr);
186
187 /*
188 * Accept the client and get the remote address...
189 */
190
191 addrlen = sizeof(http_addr_t);
192
193 if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
194 &addrlen)) < 0)
195 {
76cd9e37
MS		 196 if (errno == ENFILE || errno == EMFILE)
197 cupsdPauseListening();
198
ef416fc2 199 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
200 strerror(errno));
bd7854cb 201 free(con);
76cd9e37 202
ef416fc2 203 return;
204 }
205
206#ifdef AF_INET6
207 if (lis->address.addr.sa_family == AF_INET6)
208 {
209 /*
210 * Save the connected port number...
211 */
212
213 con->http.hostaddr->ipv6.sin6_port = lis->address.ipv6.sin6_port;
214
215 /*
216 * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
217 * can more easily use...
218 */
219
220 if (con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
221 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
222 ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
223 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
224 }
225 else
226#endif /* AF_INET6 */
227 if (lis->address.addr.sa_family == AF_INET)
228 con->http.hostaddr->ipv4.sin_port = lis->address.ipv4.sin_port;
229
230 /*
231 * Check the number of clients on the same address...
232 */
233
bd7854cb 234 for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
235 tempcon;
236 tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
237 if (httpAddrEqual(tempcon->http.hostaddr, con->http.hostaddr))
ef416fc2 238 {
239 count ++;
240 if (count >= MaxClientsPerHost)
241 break;
242 }
243
244 if (count >= MaxClientsPerHost)
245 {
246 if ((time(NULL) - last_dos) >= 60)
247 {
248 last_dos = time(NULL);
249 cupsdLogMessage(CUPSD_LOG_WARN,
bd7854cb 250 "Possible DoS attack - more than %d clients connecting "
251 "from %s!",
749b1e90
MS		 252 MaxClientsPerHost,
253 httpAddrString(con->http.hostaddr, con->http.hostname,
254 sizeof(con->http.hostname)));
ef416fc2 255 }
256
257#ifdef WIN32
258 closesocket(con->http.fd);
259#else
260 close(con->http.fd);
261#endif /* WIN32 */
262
bd7854cb 263 free(con);
ef416fc2 264 return;
265 }
266
267 /*
268 * Get the hostname or format the IP address as needed...
269 */
270
271 if (httpAddrLocalhost(con->http.hostaddr))
272 {
273 /*
274 * Map accesses from the loopback interface to "localhost"...
275 */
276
277 strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
278 hostname = con->http.hostname;
279 }
280 else
281 {
282 /*
283 * Map accesses from the same host to the server name.
284 */
285
d1c13e16 286 if (HostNameLookups)
ef416fc2 287 hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
288 sizeof(con->http.hostname));
289 else
290 {
291 hostname = NULL;
292 httpAddrString(con->http.hostaddr, con->http.hostname,
293 sizeof(con->http.hostname));
294 }
295 }
296
297 if (hostname == NULL && HostNameLookups == 2)
298 {
299 /*
300 * Can't have an unresolved IP address with double-lookups enabled...
301 */
302
303 cupsdLogMessage(CUPSD_LOG_DEBUG2,
304 "cupsdAcceptClient: Closing connection %d...",
305 con->http.fd);
306
307#ifdef WIN32
308 closesocket(con->http.fd);
309#else
310 close(con->http.fd);
311#endif /* WIN32 */
312
313 cupsdLogMessage(CUPSD_LOG_WARN,
314 "Name lookup failed - connection from %s closed!",
315 con->http.hostname);
bd7854cb 316
317 free(con);
ef416fc2 318 return;
319 }
320
321 if (HostNameLookups == 2)
322 {
323 /*
324 * Do double lookups as needed...
325 */
326
749b1e90
MS		 327 if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL))
328 != NULL)
ef416fc2 329 {
330 /*
331 * See if the hostname maps to the same IP address...
332 */
333
334 for (addr = addrlist; addr; addr = addr->next)
335 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
336 break;
337 }
338 else
339 addr = NULL;
340
341 httpAddrFreeList(addrlist);
342
343 if (!addr)
344 {
345 /*
346 * Can't have a hostname that doesn't resolve to the same IP address
347 * with double-lookups enabled...
348 */
349
350 cupsdLogMessage(CUPSD_LOG_DEBUG2,
351 "cupsdAcceptClient: Closing connection %d...",
352 con->http.fd);
353
354#ifdef WIN32
355 closesocket(con->http.fd);
356#else
357 close(con->http.fd);
358#endif /* WIN32 */
359
360 cupsdLogMessage(CUPSD_LOG_WARN,
361 "IP lookup failed - connection from %s closed!",
362 con->http.hostname);
bd7854cb 363 free(con);
ef416fc2 364 return;
365 }
366 }
367
749b1e90
MS		 368#ifdef HAVE_TCPD_H
369 /*
370 * See if the connection is denied by TCP wrappers...
371 */
372
373 request_init(&wrap_req, RQ_DAEMON, "cupsd", RQ_FILE, con->http.fd, NULL);
374 fromhost(&wrap_req);
375
376 if (!hosts_access(&wrap_req))
377 {
378 cupsdLogMessage(CUPSD_LOG_DEBUG2,
379 "cupsdAcceptClient: Closing connection %d...",
380 con->http.fd);
381
382#ifdef WIN32
383 closesocket(con->http.fd);
384#else
385 close(con->http.fd);
386#endif /* WIN32 */
387
388 cupsdLogMessage(CUPSD_LOG_WARN,
389 "Connection from %s refused by /etc/hosts.allow and "
390 "/etc/hosts.deny rules.", con->http.hostname);
391 free(con);
392 return;
393 }
394#endif /* HAVE_TCPD_H */
395
ef416fc2 396#ifdef AF_INET6
397 if (con->http.hostaddr->addr.sa_family == AF_INET6)
398 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv6)",
399 con->http.fd, con->http.hostname,
400 ntohs(con->http.hostaddr->ipv6.sin6_port));
401 else
402#endif /* AF_INET6 */
403#ifdef AF_LOCAL
404 if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
405 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s (Domain)",
406 con->http.fd, con->http.hostname);
407 else
408#endif /* AF_LOCAL */
409 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv4)",
410 con->http.fd, con->http.hostname,
411 ntohs(con->http.hostaddr->ipv4.sin_port));
412
413 /*
414 * Get the local address the client connected to...
415 */
416
417 addrlen = sizeof(temp);
418 if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
419 {
420 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
421 strerror(errno));
422
423 strcpy(con->servername, "localhost");
424 con->serverport = LocalPort;
425 }
426 else
427 {
428#ifdef AF_INET6
429 if (temp.addr.sa_family == AF_INET6)
430 {
b19ccc9e
MS		 431 if (HostNameLookups)
432 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
0af14961
MS		 433 else if (httpAddrLocalhost(&temp))
434 strlcpy(con->servername, "localhost", sizeof(con->servername));
b19ccc9e
MS		 435 else
436 httpAddrString(&temp, con->servername, sizeof(con->servername));
437
ef416fc2 438 con->serverport = ntohs(lis->address.ipv6.sin6_port);
439 }
440 else
441#endif /* AF_INET6 */
442 if (temp.addr.sa_family == AF_INET)
443 {
b19ccc9e
MS		 444 if (HostNameLookups)
445 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
0af14961
MS		 446 else if (httpAddrLocalhost(&temp))
447 strlcpy(con->servername, "localhost", sizeof(con->servername));
b19ccc9e
MS		 448 else
449 httpAddrString(&temp, con->servername, sizeof(con->servername));
450
ef416fc2 451 con->serverport = ntohs(lis->address.ipv4.sin_port);
452 }
453 else
454 {
455 strcpy(con->servername, "localhost");
456 con->serverport = LocalPort;
457 }
458 }
459
bd7854cb 460 cupsArrayAdd(Clients, con);
461
ef416fc2 462 cupsdLogMessage(CUPSD_LOG_DEBUG2,
463 "cupsdAcceptClient: %d connected to server on %s:%d",
464 con->http.fd, con->servername, con->serverport);
465
466 /*
467 * Using TCP_NODELAY improves responsiveness, especially on systems
468 * with a slow loopback interface... Since we write large buffers
469 * when sending print files and requests, there shouldn't be any
470 * performance penalty for this...
471 */
472
473 val = 1;
f7deaa1a 474 setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
ef416fc2 475
476 /*
477 * Close this file on all execs...
478 */
479
480 fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
481
482 /*
483 * Add the socket to the select() input mask.
484 */
485
f7deaa1a 486 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 487
ef416fc2 488 /*
489 * Temporarily suspend accept()'s until we lose a client...
490 */
491
bd7854cb 492 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 493 cupsdPauseListening();
494
495#ifdef HAVE_SSL
496 /*
497 * See if we are connecting on a secure port...
498 */
499
500 if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
501 {
502 /*
503 * https connection; go secure...
504 */
505
506 con->http.encryption = HTTP_ENCRYPT_ALWAYS;
507
411affcf 508 if (!encrypt_client(con))
509 cupsdCloseClient(con);
ef416fc2 510 }
511 else
512 con->auto_ssl = 1;
513#endif /* HAVE_SSL */
514}
515
516
517/*
518 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
519 */
520
521void
522cupsdCloseAllClients(void)
523{
bd7854cb 524 cupsd_client_t *con; /* Current client */
525
526
527 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
528 con;
529 con = (cupsd_client_t *)cupsArrayNext(Clients))
49d87452
MS		 530 if (cupsdCloseClient(con))
531 cupsdCloseClient(con);
ef416fc2 532}
533
534
535/*
536 * 'cupsdCloseClient()' - Close a remote client.
537 */
538
539int /* O - 1 if partial close, 0 if fully closed */
540cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
541{
542 int partial; /* Do partial close for SSL? */
543#ifdef HAVE_LIBSSL
544 SSL_CTX *context; /* Context for encryption */
545 SSL *conn; /* Connection for encryption */
546 unsigned long error; /* Error code */
547#elif defined(HAVE_GNUTLS)
89d46774 548 http_tls_t *conn; /* TLS connection information */
549 int error; /* Error code */
ef416fc2 550 gnutls_certificate_server_credentials *credentials;
551 /* TLS credentials */
89d46774 552# elif defined(HAVE_CDSASSL)
553 http_tls_t *conn; /* CDSA connection information */
ef416fc2 554#endif /* HAVE_LIBSSL */
555
556
557 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdCloseClient: %d", con->http.fd);
558
559 /*
560 * Flush pending writes before closing...
561 */
562
563 httpFlushWrite(HTTP(con));
564
565 partial = 0;
566
567#ifdef HAVE_SSL
568 /*
569 * Shutdown encryption as needed...
570 */
571
572 if (con->http.tls)
573 {
574 partial = 1;
575
576# ifdef HAVE_LIBSSL
577 conn = (SSL *)(con->http.tls);
578 context = SSL_get_SSL_CTX(conn);
579
580 switch (SSL_shutdown(conn))
581 {
582 case 1 :
c934a06c
MS		 583 cupsdLogMessage(CUPSD_LOG_DEBUG,
584 "SSL shutdown successful!");
ef416fc2 585 break;
586 case -1 :
587 cupsdLogMessage(CUPSD_LOG_ERROR,
c934a06c 588 "Fatal error during SSL shutdown!");
ef416fc2 589 default :
590 while ((error = ERR_get_error()) != 0)
c934a06c 591 cupsdLogMessage(CUPSD_LOG_ERROR, "SSL shutdown failed: %s",
ef416fc2 592 ERR_error_string(error, NULL));
593 break;
594 }
595
596 SSL_CTX_free(context);
597 SSL_free(conn);
598
599# elif defined(HAVE_GNUTLS)
600 conn = (http_tls_t *)(con->http.tls);
601 credentials = (gnutls_certificate_server_credentials *)(conn->credentials);
602
603 error = gnutls_bye(conn->session, GNUTLS_SHUT_WR);
604 switch (error)
605 {
606 case GNUTLS_E_SUCCESS:
c934a06c
MS		 607 cupsdLogMessage(CUPSD_LOG_DEBUG,
608 "SSL shutdown successful!");
ef416fc2 609 break;
610 default:
611 cupsdLogMessage(CUPSD_LOG_ERROR,
c934a06c 612 "SSL shutdown failed: %s", gnutls_strerror(error));
ef416fc2 613 break;
614 }
615
616 gnutls_deinit(conn->session);
617 gnutls_certificate_free_credentials(*credentials);
618 free(credentials);
619 free(conn);
620
621# elif defined(HAVE_CDSASSL)
89d46774 622 conn = (http_tls_t *)(con->http.tls);
623
624 while (SSLClose(conn->session) == errSSLWouldBlock)
b423cd4c 625 usleep(1000);
626
89d46774 627 SSLDisposeContext(conn->session);
628
629 if (conn->certsArray)
630 CFRelease(conn->certsArray);
631
632 free(conn);
ef416fc2 633# endif /* HAVE_LIBSSL */
634
635 con->http.tls = NULL;
636 }
637#endif /* HAVE_SSL */
638
639 if (con->pipe_pid != 0)
640 {
641 /*
642 * Stop any CGI process...
643 */
644
645 cupsdLogMessage(CUPSD_LOG_DEBUG2,
646 "cupsdCloseClient: %d Killing process ID %d...",
647 con->http.fd, con->pipe_pid);
648 cupsdEndProcess(con->pipe_pid, 1);
649 con->pipe_pid = 0;
650 }
651
652 if (con->file >= 0)
653 {
f7deaa1a 654 cupsdRemoveSelect(con->file);
ef416fc2 655
656 cupsdLogMessage(CUPSD_LOG_DEBUG2,
657 "cupsdCloseClient: %d Closing data file %d.",
658 con->http.fd, con->file);
659
660 close(con->file);
661 con->file = -1;
662 }
663
664 /*
665 * Close the socket and clear the file from the input set for select()...
666 */
667
3dfe78b3 668 if (con->http.fd >= 0)
ef416fc2 669 {
3dfe78b3
MS		 670 cupsArrayRemove(ActiveClients, con);
671 cupsdSetBusyState();
672
ef416fc2 673 if (partial)
674 {
675 /*
676 * Only do a partial close so that the encrypted client gets everything.
677 */
678
ef416fc2 679 shutdown(con->http.fd, 0);
f7deaa1a 680 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 681 }
682 else
683 {
684 /*
685 * Shut the socket down fully...
686 */
687
f7deaa1a 688 cupsdRemoveSelect(con->http.fd);
ef416fc2 689 close(con->http.fd);
ef416fc2 690 con->http.fd = -1;
691 }
692 }
693
694 if (!partial)
695 {
696 /*
697 * Free memory...
698 */
699
700 if (con->http.input_set)
701 free(con->http.input_set);
702
703 httpClearCookie(HTTP(con));
9f5eb9be 704 httpClearFields(HTTP(con));
ef416fc2 705
706 cupsdClearString(&con->filename);
707 cupsdClearString(&con->command);
708 cupsdClearString(&con->options);
b86bc4cf 709 cupsdClearString(&con->query_string);
ef416fc2 710
711 if (con->request)
712 {
713 ippDelete(con->request);
714 con->request = NULL;
715 }
716
717 if (con->response)
718 {
719 ippDelete(con->response);
720 con->response = NULL;
721 }
722
723 if (con->language)
724 {
725 cupsLangFree(con->language);
726 con->language = NULL;
727 }
728
f7deaa1a 729#ifdef HAVE_AUTHORIZATION_H
730 if (con->authref)
731 {
732 AuthorizationFree(con->authref, kAuthorizationFlagDefaults);
733 con->authref = NULL;
734 }
735#endif /* HAVE_AUTHORIZATION_H */
736
ef416fc2 737 /*
738 * Re-enable new client connections if we are going back under the
739 * limit...
740 */
741
bd7854cb 742 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 743 cupsdResumeListening();
744
745 /*
746 * Compact the list of clients as necessary...
747 */
748
bd7854cb 749 cupsArrayRemove(Clients, con);
ef416fc2 750
bd7854cb 751 free(con);
ef416fc2 752 }
753
754 return (partial);
755}
756
757
d09495fa 758/*
759 * 'cupsdFlushHeader()' - Flush the header fields to the client.
760 */
761
07725fee 762int /* I - Bytes written or -1 on error */
d09495fa 763cupsdFlushHeader(cupsd_client_t *con) /* I - Client to flush to */
764{
07725fee 765 int bytes = httpFlushWrite(HTTP(con));
d09495fa 766
767 con->http.data_encoding = HTTP_ENCODE_LENGTH;
07725fee 768
769 return (bytes);
d09495fa 770}
771
772
ef416fc2 773/*
774 * 'cupsdReadClient()' - Read data from a client.
775 */
776
f7deaa1a 777void
ef416fc2 778cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
779{
780 char line[32768], /* Line from client... */
781 operation[64], /* Operation code from socket */
782 version[64], /* HTTP version number string */
783 locale[64], /* Locale */
784 *ptr; /* Pointer into strings */
785 int major, minor; /* HTTP version numbers */
786 http_status_t status; /* Transfer status */
787 ipp_state_t ipp_state; /* State of IPP transfer */
788 int bytes; /* Number of bytes to POST */
789 char *filename; /* Name of file for GET/HEAD */
790 char buf[1024]; /* Buffer for real filename */
791 struct stat filestats; /* File information */
792 mime_type_t *type; /* MIME type of file */
793 cupsd_printer_t *p; /* Printer */
794 static unsigned request_id = 0; /* Request ID for temp files */
795
796
797 status = HTTP_CONTINUE;
798
799 cupsdLogMessage(CUPSD_LOG_DEBUG2,
800 "cupsdReadClient: %d, used=%d, file=%d state=%d",
801 con->http.fd, con->http.used, con->file, con->http.state);
802
803 if (con->http.error)
804 {
805 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: http error seen...");
f7deaa1a 806 cupsdCloseClient(con);
807 return;
ef416fc2 808 }
809
810#ifdef HAVE_SSL
811 if (con->auto_ssl)
812 {
813 /*
814 * Automatically check for a SSL/TLS handshake...
815 */
816
817 con->auto_ssl = 0;
818
819 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
820 (!buf[0] || !strchr("DGHOPT", buf[0])))
821 {
822 /*
823 * Encrypt this connection...
824 */
825
826 cupsdLogMessage(CUPSD_LOG_DEBUG2,
827 "cupsdReadClient: Saw first byte %02X, auto-negotiating SSL/TLS session...",
828 buf[0] & 255);
829
411affcf 830 if (!encrypt_client(con))
f7deaa1a 831 cupsdCloseClient(con);
411affcf 832
f7deaa1a 833 return;
ef416fc2 834 }
835 }
836#endif /* HAVE_SSL */
837
838 switch (con->http.state)
839 {
840 case HTTP_WAITING :
841 /*
842 * See if we've received a request line...
843 */
844
845 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
846 {
847 cupsdLogMessage(CUPSD_LOG_DEBUG2,
848 "cupsdReadClient: httpGets returned EOF...");
f7deaa1a 849 cupsdCloseClient(con);
850 return;
ef416fc2 851 }
852
853 /*
854 * Ignore blank request lines...
855 */
856
857 if (line[0] == '\0')
858 break;
859
860 /*
861 * Clear other state variables...
862 */
863
864 httpClearFields(HTTP(con));
865
866 con->http.activity = time(NULL);
867 con->http.version = HTTP_1_0;
868 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
869 con->http.data_encoding = HTTP_ENCODE_LENGTH;
870 con->http.data_remaining = 0;
871 con->http._data_remaining = 0;
872 con->operation = HTTP_WAITING;
873 con->bytes = 0;
874 con->file = -1;
875 con->file_ready = 0;
876 con->pipe_pid = 0;
877 con->username[0] = '\0';
878 con->password[0] = '\0';
879 con->uri[0] = '\0';
880
881 cupsdClearString(&con->command);
882 cupsdClearString(&con->options);
b86bc4cf 883 cupsdClearString(&con->query_string);
ef416fc2 884
2abf387c 885 if (con->request)
886 {
887 ippDelete(con->request);
888 con->request = NULL;
889 }
890
891 if (con->response)
892 {
893 ippDelete(con->response);
894 con->response = NULL;
895 }
896
897 if (con->language)
ef416fc2 898 {
899 cupsLangFree(con->language);
900 con->language = NULL;
901 }
902
09a101d6 903#ifdef HAVE_GSSAPI
904 con->gss_have_creds = 0;
905#endif /* HAVE_GSSAPI */
906
ef416fc2 907 /*
908 * Grab the request line...
909 */
910
911 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
912 {
913 case 1 :
c934a06c
MS		 914 if (line[0])
915 {
916 cupsdLogMessage(CUPSD_LOG_ERROR,
917 "Bad request line \"%s\" from %s!", line,
918 con->http.hostname);
919 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
920 cupsdCloseClient(con);
921 }
f7deaa1a 922 return;
ef416fc2 923 case 2 :
924 con->http.version = HTTP_0_9;
925 break;
926 case 3 :
927 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
928 {
929 cupsdLogMessage(CUPSD_LOG_ERROR,
930 "Bad request line \"%s\" from %s!", line,
931 con->http.hostname);
5bd77a73 932 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 933 cupsdCloseClient(con);
934 return;
ef416fc2 935 }
936
937 if (major < 2)
938 {
939 con->http.version = (http_version_t)(major * 100 + minor);
940 if (con->http.version == HTTP_1_1 && KeepAlive)
941 con->http.keep_alive = HTTP_KEEPALIVE_ON;
942 else
943 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
944 }
945 else
946 {
5bd77a73 947 cupsdSendError(con, HTTP_NOT_SUPPORTED, CUPSD_AUTH_NONE);
f7deaa1a 948 cupsdCloseClient(con);
949 return;
ef416fc2 950 }
951 break;
952 }
953
954 /*
955 * Handle full URLs in the request line...
956 */
957
958 if (strcmp(con->uri, "*"))
959 {
e6013cfa 960 char scheme[HTTP_MAX_URI], /* Method/scheme */
ef416fc2 961 userpass[HTTP_MAX_URI], /* Username:password */
962 hostname[HTTP_MAX_URI], /* Hostname */
963 resource[HTTP_MAX_URI]; /* Resource path */
964 int port; /* Port number */
965
966
967 /*
968 * Separate the URI into its components...
969 */
970
a4d04587 971 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
e6013cfa 972 scheme, sizeof(scheme),
ef416fc2 973 userpass, sizeof(userpass),
974 hostname, sizeof(hostname), &port,
975 resource, sizeof(resource));
976
977 /*
978 * Only allow URIs with the servername, localhost, or an IP
979 * address...
980 */
981
e6013cfa 982 if (strcmp(scheme, "file") &&
ef416fc2 983 strcasecmp(hostname, ServerName) &&
984 strcasecmp(hostname, "localhost") &&
e6013cfa 985 !isdigit(hostname[0]) && hostname[0] != '[')
ef416fc2 986 {
987 /*
988 * Nope, we don't do proxies...
989 */
990
991 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad URI \"%s\" in request!",
992 con->uri);
5bd77a73 993 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE);
f7deaa1a 994 cupsdCloseClient(con);
995 return;
ef416fc2 996 }
997
998 /*
999 * Copy the resource portion back into the URI; both resource and
1000 * con->uri are HTTP_MAX_URI bytes in size...
1001 */
1002
1003 strcpy(con->uri, resource);
1004 }
1005
1006 /*
1007 * Process the request...
1008 */
1009
1010 if (!strcmp(operation, "GET"))
1011 con->http.state = HTTP_GET;
1012 else if (!strcmp(operation, "PUT"))
1013 con->http.state = HTTP_PUT;
1014 else if (!strcmp(operation, "POST"))
1015 con->http.state = HTTP_POST;
1016 else if (!strcmp(operation, "DELETE"))
1017 con->http.state = HTTP_DELETE;
1018 else if (!strcmp(operation, "TRACE"))
1019 con->http.state = HTTP_TRACE;
1020 else if (!strcmp(operation, "OPTIONS"))
1021 con->http.state = HTTP_OPTIONS;
1022 else if (!strcmp(operation, "HEAD"))
1023 con->http.state = HTTP_HEAD;
1024 else
1025 {
1026 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad operation \"%s\"!", operation);
5bd77a73 1027 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 1028 cupsdCloseClient(con);
1029 return;
ef416fc2 1030 }
1031
dfd5680b 1032 gettimeofday(&(con->start), NULL);
ef416fc2 1033 con->operation = con->http.state;
1034
89d46774 1035 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %s %s HTTP/%d.%d",
1036 con->http.fd, operation, con->uri,
ef416fc2 1037 con->http.version / 100, con->http.version % 100);
1038
1039 con->http.status = HTTP_OK;
1040
49d87452
MS		 1041 if (!cupsArrayFind(ActiveClients, con))
1042 {
1043 cupsArrayAdd(ActiveClients, con);
1044 cupsdSetBusyState();
1045 }
3dfe78b3 1046
ef416fc2 1047 case HTTP_OPTIONS :
1048 case HTTP_DELETE :
1049 case HTTP_GET :
1050 case HTTP_HEAD :
1051 case HTTP_POST :
1052 case HTTP_PUT :
1053 case HTTP_TRACE :
1054 /*
1055 * Parse incoming parameters until the status changes...
1056 */
1057
f7deaa1a 1058 while ((status = httpUpdate(HTTP(con))) == HTTP_CONTINUE)
ee571f26 1059 if (!data_ready(con))
f7deaa1a 1060 break;
ef416fc2 1061
1062 if (status != HTTP_OK && status != HTTP_CONTINUE)
1063 {
5bd77a73 1064 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 1065 cupsdCloseClient(con);
1066 return;
ef416fc2 1067 }
1068 break;
1069
1070 default :
e6013cfa
MS		 1071 if (!data_ready(con) && recv(con->http.fd, buf, 1, MSG_PEEK) < 1)
1072 {
1073 /*
1074 * Connection closed...
1075 */
1076
1077 cupsdCloseClient(con);
1078 return;
1079 }
ef416fc2 1080 break; /* Anti-compiler-warning-code */
1081 }
1082
1083 /*
1084 * Handle new transfers...
1085 */
1086
1087 if (status == HTTP_OK)
1088 {
1089 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
1090 {
1091 /*
1092 * Figure out the locale from the Accept-Language and Content-Type
1093 * fields...
1094 */
1095
1096 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ',')) != NULL)
1097 *ptr = '\0';
1098
1099 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ';')) != NULL)
1100 *ptr = '\0';
1101
1102 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE], "charset=")) != NULL)
1103 {
1104 /*
1105 * Combine language and charset, and trim any extra params in the
1106 * content-type.
1107 */
1108
1109 snprintf(locale, sizeof(locale), "%s.%s",
1110 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
1111
1112 if ((ptr = strchr(locale, ',')) != NULL)
1113 *ptr = '\0';
1114 }
1115 else
1116 snprintf(locale, sizeof(locale), "%s.%s",
1117 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], DefaultCharset);
d6ae789d 1118
355e94dc 1119 cupsdLogMessage(CUPSD_LOG_DEBUG2,
89d46774 1120 "cupsdReadClient: %d Browser asked for language \"%s\"...",
1121 con->http.fd, locale);
1122
ef416fc2 1123 con->language = cupsLangGet(locale);
1124 }
1125 else
1126 con->language = cupsLangGet(DefaultLocale);
1127
1128 cupsdAuthorize(con);
1129
52f6f666 1130 if (!strncasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Keep-Alive", 10) &&
ef416fc2 1131 KeepAlive)
1132 con->http.keep_alive = HTTP_KEEPALIVE_ON;
52f6f666
MS		 1133 else if (!strncasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "close", 5))
1134 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
ef416fc2 1135
1136 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
1137 con->http.version >= HTTP_1_1)
1138 {
1139 /*
1140 * HTTP/1.1 and higher require the "Host:" field...
1141 */
1142
5bd77a73 1143 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1144 {
1145 cupsdCloseClient(con);
1146 return;
1147 }
ef416fc2 1148 }
e6013cfa
MS		 1149 else if (httpAddrLocalhost(con->http.hostaddr) &&
1150 strcasecmp(con->http.fields[HTTP_FIELD_HOST], "localhost") &&
1151 strncasecmp(con->http.fields[HTTP_FIELD_HOST], "localhost:", 10) &&
1152 strcmp(con->http.fields[HTTP_FIELD_HOST], "127.0.0.1") &&
1153 strncmp(con->http.fields[HTTP_FIELD_HOST], "127.0.0.1:", 10) &&
1154 strcmp(con->http.fields[HTTP_FIELD_HOST], "[::1]") &&
1155 strncmp(con->http.fields[HTTP_FIELD_HOST], "[::1]:", 6))
1156 {
1157 /*
1158 * Access to localhost must use "localhost" or the corresponding IPv4
1159 * or IPv6 values in the Host: field.
1160 */
1161
1162 cupsdLogMessage(CUPSD_LOG_WARN,
1163 "Request from \"%s\" using invalid Host: field \"%s\"",
1164 con->http.hostname, con->http.fields[HTTP_FIELD_HOST]);
1165
1166 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
1167 {
1168 cupsdCloseClient(con);
1169 return;
1170 }
1171 }
ef416fc2 1172 else if (con->operation == HTTP_OPTIONS)
1173 {
1174 /*
1175 * Do OPTIONS command...
1176 */
1177
5bd77a73 1178 if (con->best && con->best->type != CUPSD_AUTH_NONE)
ef416fc2 1179 {
5bd77a73 1180 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1181 {
1182 cupsdCloseClient(con);
1183 return;
1184 }
ef416fc2 1185 }
1186
1187 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1188 con->http.tls == NULL)
1189 {
1190#ifdef HAVE_SSL
1191 /*
1192 * Do encryption stuff...
1193 */
1194
5bd77a73 1195 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1196 {
1197 cupsdCloseClient(con);
1198 return;
1199 }
ef416fc2 1200
1201 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1202 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1203 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1204 httpPrintf(HTTP(con), "\r\n");
07725fee 1205
1206 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1207 {
1208 cupsdCloseClient(con);
1209 return;
1210 }
ef416fc2 1211
411affcf 1212 if (!encrypt_client(con))
f7deaa1a 1213 {
1214 cupsdCloseClient(con);
1215 return;
1216 }
ef416fc2 1217#else
5bd77a73 1218 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 1219 {
1220 cupsdCloseClient(con);
1221 return;
1222 }
ef416fc2 1223#endif /* HAVE_SSL */
1224 }
1225
5bd77a73 1226 if (!cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1227 {
1228 cupsdCloseClient(con);
1229 return;
1230 }
ef416fc2 1231
1232 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1233 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1234 httpPrintf(HTTP(con), "\r\n");
07725fee 1235
1236 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1237 {
1238 cupsdCloseClient(con);
1239 return;
1240 }
ef416fc2 1241 }
1242 else if (!is_path_absolute(con->uri))
1243 {
1244 /*
1245 * Protect against malicious users!
1246 */
1247
bf3816c7
MS		 1248 cupsdLogMessage(CUPSD_LOG_ERROR,
1249 "Request for non-absolute resource \"%s\"!", con->uri);
1250
5bd77a73 1251 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1252 {
1253 cupsdCloseClient(con);
1254 return;
1255 }
ef416fc2 1256 }
1257 else
1258 {
1259 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1260 con->http.tls == NULL)
1261 {
1262#ifdef HAVE_SSL
1263 /*
1264 * Do encryption stuff...
1265 */
1266
5bd77a73 1267 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1268 {
1269 cupsdCloseClient(con);
1270 return;
1271 }
ef416fc2 1272
1273 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1274 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1275 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1276 httpPrintf(HTTP(con), "\r\n");
07725fee 1277
1278 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1279 {
1280 cupsdCloseClient(con);
1281 return;
1282 }
ef416fc2 1283
411affcf 1284 if (!encrypt_client(con))
f7deaa1a 1285 {
1286 cupsdCloseClient(con);
1287 return;
1288 }
ef416fc2 1289#else
5bd77a73 1290 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 1291 {
1292 cupsdCloseClient(con);
1293 return;
1294 }
ef416fc2 1295#endif /* HAVE_SSL */
1296 }
1297
1298 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1299 {
1300 cupsdLogMessage(CUPSD_LOG_DEBUG2,
75bd9771 1301 "cupsdReadClient: Unauthorized request for %s...",
ef416fc2 1302 con->uri);
5bd77a73 1303 cupsdSendError(con, status, CUPSD_AUTH_NONE);
f7deaa1a 1304 cupsdCloseClient(con);
1305 return;
ef416fc2 1306 }
1307
b423cd4c 1308 if (con->http.expect &&
1309 (con->operation == HTTP_POST || con->operation == HTTP_PUT))
ef416fc2 1310 {
b423cd4c 1311 if (con->http.expect == HTTP_CONTINUE)
1312 {
1313 /*
1314 * Send 100-continue header...
1315 */
1316
5bd77a73 1317 if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1318 {
1319 cupsdCloseClient(con);
1320 return;
1321 }
b423cd4c 1322 }
1323 else
1324 {
1325 /*
1326 * Send 417-expectation-failed header...
1327 */
1328
5bd77a73 1329 if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1330 {
1331 cupsdCloseClient(con);
1332 return;
1333 }
b423cd4c 1334
1335 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1336 httpPrintf(HTTP(con), "\r\n");
07725fee 1337
1338 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1339 {
1340 cupsdCloseClient(con);
1341 return;
1342 }
b423cd4c 1343 }
ef416fc2 1344 }
1345
1346 switch (con->http.state)
1347 {
1348 case HTTP_GET_SEND :
1349 if (!strncmp(con->uri, "/printers/", 10) &&
1350 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1351 {
1352 /*
1353 * Send PPD file - get the real printer name since printer
1354 * names are not case sensitive but filenames can be...
1355 */
1356
1357 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1358
1359 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1360 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1361 else
1362 {
5bd77a73 1363 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1364 {
1365 cupsdCloseClient(con);
1366 return;
1367 }
ef416fc2 1368
1369 break;
1370 }
1371 }
1372
1373 if ((!strncmp(con->uri, "/admin", 6) &&
1374 strncmp(con->uri, "/admin/conf/", 12) &&
1375 strncmp(con->uri, "/admin/log/", 11)) ||
1376 !strncmp(con->uri, "/printers", 9) ||
1377 !strncmp(con->uri, "/classes", 8) ||
1378 !strncmp(con->uri, "/help", 5) ||
1379 !strncmp(con->uri, "/jobs", 5))
1380 {
1381 /*
1382 * Send CGI output...
1383 */
1384
1385 if (!strncmp(con->uri, "/admin", 6))
1386 {
1387 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1388 ServerBin);
1389
b423cd4c 1390 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1391 }
1392 else if (!strncmp(con->uri, "/printers", 9))
1393 {
1394 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1395 ServerBin);
b423cd4c 1396
1397 if (con->uri[9] && con->uri[10])
1398 cupsdSetString(&con->options, con->uri + 9);
1399 else
1400 cupsdSetString(&con->options, NULL);
ef416fc2 1401 }
1402 else if (!strncmp(con->uri, "/classes", 8))
1403 {
1404 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1405 ServerBin);
b423cd4c 1406
1407 if (con->uri[8] && con->uri[9])
1408 cupsdSetString(&con->options, con->uri + 8);
1409 else
1410 cupsdSetString(&con->options, NULL);
ef416fc2 1411 }
1412 else if (!strncmp(con->uri, "/jobs", 5))
1413 {
1414 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1415 ServerBin);
b423cd4c 1416
1417 if (con->uri[5] && con->uri[6])
1418 cupsdSetString(&con->options, con->uri + 5);
1419 else
1420 cupsdSetString(&con->options, NULL);
ef416fc2 1421 }
1422 else
1423 {
1424 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1425 ServerBin);
ef416fc2 1426
b423cd4c 1427 if (con->uri[5] && con->uri[6])
1428 cupsdSetString(&con->options, con->uri + 5);
1429 else
1430 cupsdSetString(&con->options, NULL);
1431 }
ef416fc2 1432
1433 if (!cupsdSendCommand(con, con->command, con->options, 0))
1434 {
5bd77a73 1435 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1436 {
1437 cupsdCloseClient(con);
1438 return;
1439 }
ef416fc2 1440 }
1441 else
1442 cupsdLogRequest(con, HTTP_OK);
1443
1444 if (con->http.version <= HTTP_1_0)
1445 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1446 }
1447 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1448 (strchr(con->uri + 12, '/') ||
1449 strlen(con->uri) == 12)) ||
1450 (!strncmp(con->uri, "/admin/log/", 11) &&
1451 (strchr(con->uri + 11, '/') ||
1452 strlen(con->uri) == 11)))
1453 {
1454 /*
bf3816c7 1455 * GET can only be done to configuration files directly under
ef416fc2 1456 * /admin/conf...
1457 */
1458
bf3816c7
MS		 1459 cupsdLogMessage(CUPSD_LOG_ERROR,
1460 "Request for subdirectory \"%s\"!", con->uri);
1461
5bd77a73 1462 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1463 {
1464 cupsdCloseClient(con);
1465 return;
1466 }
ef416fc2 1467
1468 break;
1469 }
1470 else
1471 {
1472 /*
1473 * Serve a file...
1474 */
1475
1476 if ((filename = get_file(con, &filestats, buf,
1477 sizeof(buf))) == NULL)
1478 {
5bd77a73 1479 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1480 {
1481 cupsdCloseClient(con);
1482 return;
1483 }
ef416fc2 1484
1485 break;
1486 }
1487
4400e98d 1488 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1489
e1d6a774 1490 if (is_cgi(con, filename, &filestats, type))
ef416fc2 1491 {
1492 /*
1493 * Note: con->command and con->options were set by
e1d6a774 1494 * is_cgi()...
ef416fc2 1495 */
1496
1497 if (!cupsdSendCommand(con, con->command, con->options, 0))
1498 {
5bd77a73 1499 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1500 {
1501 cupsdCloseClient(con);
1502 return;
1503 }
ef416fc2 1504 }
1505 else
1506 cupsdLogRequest(con, HTTP_OK);
1507
1508 if (con->http.version <= HTTP_1_0)
1509 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1510 break;
1511 }
1512
1513 if (!check_if_modified(con, &filestats))
1514 {
5bd77a73 1515 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1516 {
1517 cupsdCloseClient(con);
1518 return;
1519 }
ef416fc2 1520 }
1521 else
1522 {
1523 if (type == NULL)
1524 strcpy(line, "text/plain");
1525 else
1526 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1527
a74454a7 1528 if (!write_file(con, HTTP_OK, filename, line, &filestats))
f7deaa1a 1529 {
1530 cupsdCloseClient(con);
1531 return;
1532 }
ef416fc2 1533 }
1534 }
1535 break;
1536
1537 case HTTP_POST_RECV :
1538 /*
1539 * See if the POST request includes a Content-Length field, and if
1540 * so check the length against any limits that are set...
1541 */
1542
1543 cupsdLogMessage(CUPSD_LOG_DEBUG2, "POST %s", con->uri);
1544 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1545 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1546
1547 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1548 MaxRequestSize > 0 &&
1549 con->http.data_remaining > MaxRequestSize)
1550 {
1551 /*
1552 * Request too large...
1553 */
1554
5bd77a73 1555 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1556 {
1557 cupsdCloseClient(con);
1558 return;
1559 }
ef416fc2 1560
1561 break;
1562 }
839a51c8
MS		 1563 else if (con->http.data_remaining < 0 ||
1564 (!con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1565 con->http.data_encoding == HTTP_ENCODE_LENGTH))
ef416fc2 1566 {
1567 /*
1568 * Negative content lengths are invalid!
1569 */
1570
5bd77a73 1571 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1572 {
1573 cupsdCloseClient(con);
1574 return;
1575 }
ef416fc2 1576
1577 break;
1578 }
1579
1580 /*
1581 * See what kind of POST request this is; for IPP requests the
1582 * content-type field will be "application/ipp"...
1583 */
1584
1585 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1586 "application/ipp"))
1587 con->request = ippNew();
1588 else if ((!strncmp(con->uri, "/admin", 6) &&
1589 strncmp(con->uri, "/admin/conf/", 12) &&
1590 strncmp(con->uri, "/admin/log/", 11)) ||
1591 !strncmp(con->uri, "/printers", 9) ||
1592 !strncmp(con->uri, "/classes", 8) ||
1593 !strncmp(con->uri, "/help", 5) ||
1594 !strncmp(con->uri, "/jobs", 5))
1595 {
1596 /*
1597 * CGI request...
1598 */
1599
1600 if (!strncmp(con->uri, "/admin", 6))
1601 {
1602 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1603 ServerBin);
1604
b423cd4c 1605 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1606 }
1607 else if (!strncmp(con->uri, "/printers", 9))
1608 {
1609 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1610 ServerBin);
b423cd4c 1611
1612 if (con->uri[9] && con->uri[10])
1613 cupsdSetString(&con->options, con->uri + 9);
1614 else
1615 cupsdSetString(&con->options, NULL);
ef416fc2 1616 }
1617 else if (!strncmp(con->uri, "/classes", 8))
1618 {
1619 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1620 ServerBin);
b423cd4c 1621
1622 if (con->uri[8] && con->uri[9])
1623 cupsdSetString(&con->options, con->uri + 8);
1624 else
1625 cupsdSetString(&con->options, NULL);
ef416fc2 1626 }
1627 else if (!strncmp(con->uri, "/jobs", 5))
1628 {
1629 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1630 ServerBin);
b423cd4c 1631
1632 if (con->uri[5] && con->uri[6])
1633 cupsdSetString(&con->options, con->uri + 5);
1634 else
1635 cupsdSetString(&con->options, NULL);
ef416fc2 1636 }
1637 else
1638 {
1639 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1640 ServerBin);
ef416fc2 1641
b423cd4c 1642 if (con->uri[5] && con->uri[6])
1643 cupsdSetString(&con->options, con->uri + 5);
1644 else
1645 cupsdSetString(&con->options, NULL);
1646 }
ef416fc2 1647
1648 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b423cd4c 1649 "cupsdReadClient: %d command=\"%s\", "
1650 "options = \"%s\"",
f301802f 1651 con->http.fd, con->command,
1652 con->options ? con->options : "(null)");
ef416fc2 1653
1654 if (con->http.version <= HTTP_1_0)
1655 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1656 }
1657 else
1658 {
1659 /*
1660 * POST to a file...
1661 */
1662
1663 if ((filename = get_file(con, &filestats, buf,
1664 sizeof(buf))) == NULL)
1665 {
5bd77a73 1666 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1667 {
1668 cupsdCloseClient(con);
1669 return;
1670 }
ef416fc2 1671
1672 break;
1673 }
1674
4400e98d 1675 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1676
e1d6a774 1677 if (!is_cgi(con, filename, &filestats, type))
ef416fc2 1678 {
1679 /*
1680 * Only POST to CGI's...
1681 */
1682
5bd77a73 1683 if (!cupsdSendError(con, HTTP_UNAUTHORIZED, CUPSD_AUTH_NONE))
f7deaa1a 1684 {
1685 cupsdCloseClient(con);
1686 return;
1687 }
ef416fc2 1688 }
1689 }
1690 break;
1691
1692 case HTTP_PUT_RECV :
1693 /*
1694 * Validate the resource name...
1695 */
1696
1697 if (strncmp(con->uri, "/admin/conf/", 12) ||
1698 strchr(con->uri + 12, '/') ||
1699 strlen(con->uri) == 12)
1700 {
1701 /*
1702 * PUT can only be done to configuration files under
1703 * /admin/conf...
1704 */
1705
bf3816c7
MS		 1706 cupsdLogMessage(CUPSD_LOG_ERROR,
1707 "Request for subdirectory \"%s\"!", con->uri);
1708
5bd77a73 1709 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1710 {
1711 cupsdCloseClient(con);
1712 return;
1713 }
ef416fc2 1714
1715 break;
1716 }
1717
1718 /*
1719 * See if the PUT request includes a Content-Length field, and if
1720 * so check the length against any limits that are set...
1721 */
1722
1723 cupsdLogMessage(CUPSD_LOG_DEBUG2, "PUT %s", con->uri);
1724 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1725 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1726
1727 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1728 MaxRequestSize > 0 &&
1729 con->http.data_remaining > MaxRequestSize)
1730 {
1731 /*
1732 * Request too large...
1733 */
1734
5bd77a73 1735 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1736 {
1737 cupsdCloseClient(con);
1738 return;
1739 }
ef416fc2 1740
1741 break;
1742 }
1743 else if (con->http.data_remaining < 0)
1744 {
1745 /*
1746 * Negative content lengths are invalid!
1747 */
1748
5bd77a73 1749 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1750 {
1751 cupsdCloseClient(con);
1752 return;
1753 }
ef416fc2 1754
1755 break;
1756 }
1757
1758 /*
1759 * Open a temporary file to hold the request...
1760 */
1761
1762 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1763 request_id ++);
1764 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1765
ef416fc2 1766 if (con->file < 0)
1767 {
a4924f6c
MS		 1768 cupsdLogMessage(CUPSD_LOG_ERROR,
1769 "Unable to create request file %s: %s",
1770 con->filename, strerror(errno));
1771
5bd77a73 1772 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1773 {
1774 cupsdCloseClient(con);
1775 return;
1776 }
ef416fc2 1777 }
1778
a4924f6c
MS		 1779 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1780 "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1781 con->filename, con->file);
1782
ef416fc2 1783 fchmod(con->file, 0640);
1784 fchown(con->file, RunUser, Group);
1785 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1786 break;
1787
1788 case HTTP_DELETE :
1789 case HTTP_TRACE :
5bd77a73 1790 cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE);
f7deaa1a 1791 cupsdCloseClient(con);
1792 return;
ef416fc2 1793
1794 case HTTP_HEAD :
1795 if (!strncmp(con->uri, "/printers/", 10) &&
1796 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1797 {
1798 /*
1799 * Send PPD file - get the real printer name since printer
1800 * names are not case sensitive but filenames can be...
1801 */
1802
1803 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1804
1805 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1806 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1807 else
1808 {
5bd77a73 1809 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1810 {
1811 cupsdCloseClient(con);
1812 return;
1813 }
ef416fc2 1814
1815 break;
1816 }
1817 }
1818
1819 if ((!strncmp(con->uri, "/admin", 6) &&
1820 strncmp(con->uri, "/admin/conf/", 12) &&
1821 strncmp(con->uri, "/admin/log/", 11)) ||
1822 !strncmp(con->uri, "/printers", 9) ||
1823 !strncmp(con->uri, "/classes", 8) ||
1824 !strncmp(con->uri, "/help", 5) ||
1825 !strncmp(con->uri, "/jobs", 5))
1826 {
1827 /*
1828 * CGI output...
1829 */
1830
5bd77a73 1831 if (!cupsdSendHeader(con, HTTP_OK, "text/html", CUPSD_AUTH_NONE))
f7deaa1a 1832 {
1833 cupsdCloseClient(con);
1834 return;
1835 }
ef416fc2 1836
1837 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 1838 {
1839 cupsdCloseClient(con);
1840 return;
1841 }
ef416fc2 1842
07725fee 1843 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1844 {
1845 cupsdCloseClient(con);
1846 return;
1847 }
d09495fa 1848
ef416fc2 1849 cupsdLogRequest(con, HTTP_OK);
1850 }
1851 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1852 (strchr(con->uri + 12, '/') ||
1853 strlen(con->uri) == 12)) ||
1854 (!strncmp(con->uri, "/admin/log/", 11) &&
1855 (strchr(con->uri + 11, '/') ||
1856 strlen(con->uri) == 11)))
1857 {
1858 /*
1859 * HEAD can only be done to configuration files under
1860 * /admin/conf...
1861 */
1862
bf3816c7
MS		 1863 cupsdLogMessage(CUPSD_LOG_ERROR,
1864 "Request for subdirectory \"%s\"!", con->uri);
1865
5bd77a73 1866 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1867 {
1868 cupsdCloseClient(con);
1869 return;
1870 }
ef416fc2 1871
1872 break;
1873 }
1874 else if ((filename = get_file(con, &filestats, buf,
1875 sizeof(buf))) == NULL)
1876 {
5bd77a73 1877 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html", CUPSD_AUTH_NONE))
f7deaa1a 1878 {
1879 cupsdCloseClient(con);
1880 return;
1881 }
ef416fc2 1882
1883 cupsdLogRequest(con, HTTP_NOT_FOUND);
1884 }
1885 else if (!check_if_modified(con, &filestats))
1886 {
5bd77a73 1887 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1888 {
1889 cupsdCloseClient(con);
1890 return;
1891 }
ef416fc2 1892
1893 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
1894 }
1895 else
1896 {
1897 /*
1898 * Serve a file...
1899 */
1900
4400e98d 1901 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1902 if (type == NULL)
1903 strcpy(line, "text/plain");
1904 else
1905 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1906
5bd77a73 1907 if (!cupsdSendHeader(con, HTTP_OK, line, CUPSD_AUTH_NONE))
f7deaa1a 1908 {
1909 cupsdCloseClient(con);
1910 return;
1911 }
ef416fc2 1912
1913 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
1914 httpGetDateString(filestats.st_mtime)) < 0)
f7deaa1a 1915 {
1916 cupsdCloseClient(con);
1917 return;
1918 }
ef416fc2 1919
1920 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
1921 (unsigned long)filestats.st_size) < 0)
f7deaa1a 1922 {
1923 cupsdCloseClient(con);
1924 return;
1925 }
ef416fc2 1926
1927 cupsdLogRequest(con, HTTP_OK);
1928 }
1929
1930 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 1931 {
1932 cupsdCloseClient(con);
1933 return;
1934 }
ef416fc2 1935
07725fee 1936 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1937 {
1938 cupsdCloseClient(con);
1939 return;
1940 }
d09495fa 1941
ef416fc2 1942 con->http.state = HTTP_WAITING;
1943 break;
1944
1945 default :
1946 break; /* Anti-compiler-warning-code */
1947 }
1948 }
1949 }
1950
1951 /*
1952 * Handle any incoming data...
1953 */
1954
1955 switch (con->http.state)
1956 {
1957 case HTTP_PUT_RECV :
1958 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1959 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_%s, "
1960 "con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1961 con->http.fd,
1962 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1963 "CHUNKED" : "LENGTH",
1964 CUPS_LLCAST con->http.data_remaining, con->file);
1965
f7deaa1a 1966 do
ef416fc2 1967 {
f7deaa1a 1968 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
1969 {
1970 cupsdCloseClient(con);
1971 return;
1972 }
1973 else if (bytes > 0)
1974 {
1975 con->bytes += bytes;
ef416fc2 1976
f7deaa1a 1977 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1978 "cupsdReadClient: %d writing %d bytes to %d",
1979 con->http.fd, bytes, con->file);
ef416fc2 1980
f7deaa1a 1981 if (write(con->file, line, bytes) < bytes)
1982 {
1983 cupsdLogMessage(CUPSD_LOG_ERROR,
1984 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1985 bytes, con->filename, strerror(errno));
ef416fc2 1986
f7deaa1a 1987 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1988 "cupsdReadClient: Closing data file %d...",
1989 con->file);
ef416fc2 1990
f7deaa1a 1991 close(con->file);
1992 con->file = -1;
1993 unlink(con->filename);
1994 cupsdClearString(&con->filename);
ef416fc2 1995
5bd77a73 1996 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1997 {
1998 cupsdCloseClient(con);
1999 return;
2000 }
2001 }
ef416fc2 2002 }
f7deaa1a 2003 }
ee571f26 2004 while (con->http.state == HTTP_PUT_RECV && data_ready(con));
ef416fc2 2005
2006 if (con->http.state == HTTP_WAITING)
2007 {
2008 /*
2009 * End of file, see how big it is...
2010 */
2011
2012 fstat(con->file, &filestats);
2013
2014 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2015 "cupsdReadClient: %d Closing data file %d, size="
2016 CUPS_LLFMT ".",
2017 con->http.fd, con->file,
2018 CUPS_LLCAST filestats.st_size);
2019
2020 close(con->file);
2021 con->file = -1;
2022
2023 if (filestats.st_size > MaxRequestSize &&
2024 MaxRequestSize > 0)
2025 {
2026 /*
2027 * Request is too big; remove it and send an error...
2028 */
2029
2030 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2031 "cupsdReadClient: %d Removing temp file %s",
2032 con->http.fd, con->filename);
2033 unlink(con->filename);
2034 cupsdClearString(&con->filename);
2035
5bd77a73 2036 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2037 {
2038 cupsdCloseClient(con);
2039 return;
2040 }
ef416fc2 2041 }
2042
2043 /*
2044 * Install the configuration file...
2045 */
2046
2047 status = install_conf_file(con);
2048
2049 /*
2050 * Return the status to the client...
2051 */
2052
5bd77a73 2053 if (!cupsdSendError(con, status, CUPSD_AUTH_NONE))
f7deaa1a 2054 {
2055 cupsdCloseClient(con);
2056 return;
2057 }
ef416fc2 2058 }
2059 break;
2060
2061 case HTTP_POST_RECV :
2062 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2063 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_"
2064 "%s, con->data_remaining=" CUPS_LLFMT ", con->file=%d",
2065 con->http.fd,
2066 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
2067 "CHUNKED" : "LENGTH",
2068 CUPS_LLCAST con->http.data_remaining, con->file);
2069
f7deaa1a 2070 do
ef416fc2 2071 {
f7deaa1a 2072 if (con->request)
ef416fc2 2073 {
f7deaa1a 2074 /*
2075 * Grab any request data from the connection...
2076 */
ef416fc2 2077
f7deaa1a 2078 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
ef416fc2 2079 {
f7deaa1a 2080 cupsdLogMessage(CUPSD_LOG_ERROR,
2081 "cupsdReadClient: %d IPP Read Error!",
2082 con->http.fd);
2083
5bd77a73 2084 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 2085 cupsdCloseClient(con);
2086 return;
ef416fc2 2087 }
f7deaa1a 2088 else if (ipp_state != IPP_DATA)
2089 {
2090 if (con->http.state == HTTP_POST_SEND)
2091 {
5bd77a73 2092 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 2093 cupsdCloseClient(con);
2094 return;
2095 }
ef416fc2 2096
f7deaa1a 2097 break;
2098 }
2099 else
2100 con->bytes += ippLength(con->request);
2101 }
ef416fc2 2102
f7deaa1a 2103 if (con->file < 0 && con->http.state != HTTP_POST_SEND)
2104 {
2105 /*
2106 * Create a file as needed for the request data...
2107 */
ef416fc2 2108
f7deaa1a 2109 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
2110 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
ef416fc2 2111
f7deaa1a 2112 if (con->file < 0)
2113 {
a4924f6c
MS		 2114 cupsdLogMessage(CUPSD_LOG_ERROR,
2115 "Unable to create request file %s: %s",
2116 con->filename, strerror(errno));
2117
5bd77a73 2118 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2119 {
2120 cupsdCloseClient(con);
2121 return;
2122 }
2123 }
ef416fc2 2124
a4924f6c
MS		 2125 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
2126 con->filename, con->file);
2127
f7deaa1a 2128 fchmod(con->file, 0640);
2129 fchown(con->file, RunUser, Group);
2130 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2131 }
ef416fc2 2132
f7deaa1a 2133 if (con->http.state != HTTP_POST_SEND)
ef416fc2 2134 {
f7deaa1a 2135 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
2136 {
2137 cupsdCloseClient(con);
2138 return;
2139 }
2140 else if (bytes > 0)
2141 {
2142 con->bytes += bytes;
ef416fc2 2143
f7deaa1a 2144 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2145 "cupsdReadClient: %d writing %d bytes to %d",
2146 con->http.fd, bytes, con->file);
ef416fc2 2147
f7deaa1a 2148 if (write(con->file, line, bytes) < bytes)
2149 {
2150 cupsdLogMessage(CUPSD_LOG_ERROR,
2151 "cupsdReadClient: Unable to write %d bytes to %s: %s",
2152 bytes, con->filename, strerror(errno));
ef416fc2 2153
f7deaa1a 2154 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2155 "cupsdReadClient: Closing file %d...",
2156 con->file);
ef416fc2 2157
f7deaa1a 2158 close(con->file);
2159 con->file = -1;
2160 unlink(con->filename);
2161 cupsdClearString(&con->filename);
ef416fc2 2162
5bd77a73 2163 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2164 {
2165 cupsdCloseClient(con);
2166 return;
2167 }
2168 }
2169 }
2170 else if (con->http.state == HTTP_POST_RECV)
2171 return;
2172 else if (con->http.state != HTTP_POST_SEND)
2173 {
2174 cupsdCloseClient(con);
2175 return;
ef416fc2 2176 }
2177 }
f7deaa1a 2178 }
ee571f26 2179 while (con->http.state == HTTP_POST_RECV && data_ready(con));
ef416fc2 2180
2181 if (con->http.state == HTTP_POST_SEND)
2182 {
2183 if (con->file >= 0)
2184 {
2185 fstat(con->file, &filestats);
2186
2187 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2188 "cupsdReadClient: %d Closing data file %d, "
2189 "size=" CUPS_LLFMT ".",
2190 con->http.fd, con->file,
2191 CUPS_LLCAST filestats.st_size);
2192
2193 close(con->file);
2194 con->file = -1;
2195
2196 if (filestats.st_size > MaxRequestSize &&
2197 MaxRequestSize > 0)
2198 {
2199 /*
2200 * Request is too big; remove it and send an error...
2201 */
2202
2203 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2204 "cupsdReadClient: %d Removing temp file %s",
2205 con->http.fd, con->filename);
2206 unlink(con->filename);
2207 cupsdClearString(&con->filename);
2208
2209 if (con->request)
2210 {
2211 /*
2212 * Delete any IPP request data...
2213 */
2214
2215 ippDelete(con->request);
2216 con->request = NULL;
2217 }
2218
5bd77a73 2219 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2220 {
2221 cupsdCloseClient(con);
2222 return;
2223 }
ef416fc2 2224 }
2225
2226 if (con->command)
2227 {
2228 if (!cupsdSendCommand(con, con->command, con->options, 0))
2229 {
5bd77a73 2230 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 2231 {
2232 cupsdCloseClient(con);
2233 return;
2234 }
ef416fc2 2235 }
2236 else
2237 cupsdLogRequest(con, HTTP_OK);
2238 }
2239 }
2240
2241 if (con->request)
f7deaa1a 2242 {
2243 cupsdProcessIPPRequest(con);
bc44d920 2244
2245 if (con->filename)
2246 {
2247 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2248 "cupsdReadClient: %d Removing temp file %s",
2249 con->http.fd, con->filename);
2250 unlink(con->filename);
2251 cupsdClearString(&con->filename);
2252 }
2253
f7deaa1a 2254 return;
2255 }
ef416fc2 2256 }
2257 break;
2258
2259 default :
2260 break; /* Anti-compiler-warning-code */
2261 }
2262
3dfe78b3
MS		 2263 if (con->http.state == HTTP_WAITING)
2264 {
2265 if (!con->http.keep_alive)
2266 cupsdCloseClient(con);
2267 else
2268 {
2269 cupsArrayRemove(ActiveClients, con);
2270 cupsdSetBusyState();
2271 }
2272 }
ef416fc2 2273}
2274
2275
2276/*
2277 * 'cupsdSendCommand()' - Send output from a command via HTTP.
2278 */
2279
2280int /* O - 1 on success, 0 on failure */
2281cupsdSendCommand(
2282 cupsd_client_t *con, /* I - Client connection */
2283 char *command, /* I - Command to run */
2284 char *options, /* I - Command-line options */
2285 int root) /* I - Run as root? */
2286{
2287 int fd; /* Standard input file descriptor */
2288
2289
2290 if (con->filename)
ed486911 2291 {
ef416fc2 2292 fd = open(con->filename, O_RDONLY);
ef416fc2 2293
ed486911 2294 if (fd < 0)
2295 {
2296 cupsdLogMessage(CUPSD_LOG_ERROR,
2297 "cupsdSendCommand: %d Unable to open \"%s\" for reading: %s",
2298 con->http.fd, con->filename ? con->filename : "/dev/null",
2299 strerror(errno));
2300 return (0);
2301 }
ef416fc2 2302
ed486911 2303 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
2304 }
2305 else
2306 fd = -1;
ef416fc2 2307
2308 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
2309
ed486911 2310 if (fd >= 0)
2311 close(fd);
ef416fc2 2312
2313 cupsdLogMessage(CUPSD_LOG_INFO, "Started \"%s\" (pid=%d)", command,
2314 con->pipe_pid);
2315
2316 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendCommand: %d file=%d",
2317 con->http.fd, con->file);
2318
2319 if (con->pipe_pid == 0)
2320 return (0);
2321
2322 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2323
f899b121 2324 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
ef416fc2 2325
2326 con->sent_header = 0;
2327 con->file_ready = 0;
2328 con->got_fields = 0;
2329 con->field_col = 0;
2330
2331 return (1);
2332}
2333
2334
2335/*
2336 * 'cupsdSendError()' - Send an error message via HTTP.
2337 */
2338
2339int /* O - 1 if successful, 0 otherwise */
2340cupsdSendError(cupsd_client_t *con, /* I - Connection */
f899b121 2341 http_status_t code, /* I - Error code */
2342 int auth_type)/* I - Authentication type */
ef416fc2 2343{
4744bd90 2344#ifdef HAVE_SSL
2345 /*
2346 * Force client to upgrade for authentication if that is how the
2347 * server is configured...
2348 */
2349
2350 if (code == HTTP_UNAUTHORIZED &&
2351 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
2352 strcasecmp(con->http.hostname, "localhost") &&
2353 !con->http.tls)
2354 {
2355 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2356 "cupsdSendError: Encryption before authentication!");
2357 code = HTTP_UPGRADE_REQUIRED;
2358 }
2359#endif /* HAVE_SSL */
2360
ef416fc2 2361 /*
2362 * Put the request in the access_log file...
2363 */
2364
2365 cupsdLogRequest(con, code);
2366
2367 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendError: %d code=%d (%s)",
2368 con->http.fd, code, httpStatus(code));
2369
2370 /*
2371 * To work around bugs in some proxies, don't use Keep-Alive for some
2372 * error messages...
f7deaa1a 2373 *
2374 * Kerberos authentication doesn't work without Keep-Alive, so
2375 * never disable it in that case.
ef416fc2 2376 */
2377
5bd77a73 2378 if (code >= HTTP_BAD_REQUEST && con->http.auth_type != CUPSD_AUTH_NEGOTIATE)
ef416fc2 2379 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
2380
2381 /*
2382 * Send an error message back to the client. If the error code is a
2383 * 400 or 500 series, make sure the message contains some text, too!
2384 */
2385
f899b121 2386 if (!cupsdSendHeader(con, code, NULL, auth_type))
ef416fc2 2387 return (0);
2388
2389#ifdef HAVE_SSL
2390 if (code == HTTP_UPGRADE_REQUIRED)
2391 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
2392 return (0);
2393
2394 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n") < 0)
2395 return (0);
2396#endif /* HAVE_SSL */
2397
f7deaa1a 2398 if (con->http.version >= HTTP_1_1 &&
2399 con->http.keep_alive == HTTP_KEEPALIVE_OFF)
ef416fc2 2400 {
2401 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
2402 return (0);
2403 }
2404
2405 if (code >= HTTP_BAD_REQUEST)
2406 {
2407 /*
2408 * Send a human-readable error message.
2409 */
2410
80ca4592 2411 char message[4096], /* Message for user */
2412 urltext[1024], /* URL redirection text */
2413 redirect[1024]; /* Redirection link */
ef416fc2 2414 const char *text; /* Status-specific text */
2415
80ca4592 2416
2417 redirect[0] = '\0';
2418
ef416fc2 2419 if (code == HTTP_UNAUTHORIZED)
2420 text = _cupsLangString(con->language,
2421 _("Enter your username and password or the "
2422 "root username and password to access this "
f7deaa1a 2423 "page. If you are using Kerberos authentication, "
2424 "make sure you have a valid Kerberos ticket."));
ef416fc2 2425 else if (code == HTTP_UPGRADE_REQUIRED)
80ca4592 2426 {
2427 text = urltext;
2428
2429 snprintf(urltext, sizeof(urltext),
2430 _cupsLangString(con->language,
2431 _("You must access this page using the URL "
2432 "<A HREF=\"https://%s:%d%s\">"
2433 "https://%s:%d%s</A>.")),
2434 con->servername, con->serverport, con->uri,
2435 con->servername, con->serverport, con->uri);
2436
2437 snprintf(redirect, sizeof(redirect),
b86bc4cf 2438 "<META HTTP-EQUIV=\"Refresh\" "
2439 "CONTENT=\"3;URL=https://%s:%d%s\">\n",
80ca4592 2440 con->servername, con->serverport, con->uri);
2441 }
ef416fc2 2442 else
2443 text = "";
2444
2445 snprintf(message, sizeof(message),
745129be
MS		 2446 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" "
2447 "\"http://www.w3.org/TR/html4/loose.dtd\">\n"
ef416fc2 2448 "<HTML>\n"
2449 "<HEAD>\n"
2450 "\t<META HTTP-EQUIV=\"Content-Type\" "
2451 "CONTENT=\"text/html; charset=utf-8\">\n"
2452 "\t<TITLE>%d %s</TITLE>\n"
2453 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2454 "HREF=\"/cups.css\">\n"
80ca4592 2455 "%s"
ef416fc2 2456 "</HEAD>\n"
2457 "<BODY>\n"
2458 "<H1>%d %s</H1>\n"
2459 "<P>%s</P>\n"
2460 "</BODY>\n"
2461 "</HTML>\n",
80ca4592 2462 code, httpStatus(code), redirect, code, httpStatus(code), text);
ef416fc2 2463
2464 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2465 return (0);
2466 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2467 (int)strlen(message)) < 0)
2468 return (0);
2469 if (httpPrintf(HTTP(con), "\r\n") < 0)
2470 return (0);
2471 if (httpPrintf(HTTP(con), "%s", message) < 0)
2472 return (0);
2473 }
2474 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2475 return (0);
2476
07725fee 2477 if (cupsdFlushHeader(con) < 0)
2478 return (0);
d09495fa 2479
ef416fc2 2480 con->http.state = HTTP_WAITING;
2481
2482 return (1);
2483}
2484
2485
ef416fc2 2486/*
2487 * 'cupsdSendHeader()' - Send an HTTP request.
2488 */
2489
2490int /* O - 1 on success, 0 on failure */
f899b121 2491cupsdSendHeader(
2492 cupsd_client_t *con, /* I - Client to send to */
2493 http_status_t code, /* I - HTTP status code */
2494 char *type, /* I - MIME type of document */
2495 int auth_type) /* I - Type of authentication */
ef416fc2 2496{
5a738aea
MS		 2497 char auth_str[1024]; /* Authorization string */
2498#ifdef HAVE_GSSAPI
2499 static char *gss_buf = NULL; /* Kerberos auth data buffer */
2500 static int gss_bufsize = 0; /* Size of Kerberos auth data buffer */
2501#endif /* HAVE_GSSAPI */
f7deaa1a 2502
2503
4744bd90 2504 /*
2505 * Send the HTTP status header...
2506 */
2507
b423cd4c 2508 if (code == HTTP_CONTINUE)
2509 {
4744bd90 2510 /*
2511 * 100-continue doesn't send any headers...
2512 */
2513
07725fee 2514 return (httpPrintf(HTTP(con), "HTTP/%d.%d 100 Continue\r\n\r\n",
2515 con->http.version / 100, con->http.version % 100) > 0);
b423cd4c 2516 }
2517
07725fee 2518 httpFlushWrite(HTTP(con));
2519
2520 con->http.data_encoding = HTTP_ENCODE_FIELDS;
2521
2522 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2523 con->http.version % 100, code, httpStatus(code)) < 0)
2524 return (0);
ef416fc2 2525 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2526 return (0);
2527 if (ServerHeader)
2528 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2529 return (0);
2530 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2531 {
2532 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2533 return (0);
2534 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2535 KeepAliveTimeout) < 0)
2536 return (0);
2537 }
2538 if (code == HTTP_METHOD_NOT_ALLOWED)
e6013cfa 2539 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n") < 0)
ef416fc2 2540 return (0);
2541
2542 if (code == HTTP_UNAUTHORIZED)
2543 {
5bd77a73 2544 if (auth_type == CUPSD_AUTH_NONE)
f899b121 2545 {
5bd77a73 2546 if (!con->best || con->best->type <= CUPSD_AUTH_NONE)
f899b121 2547 auth_type = DefaultAuthType;
2548 else
2549 auth_type = con->best->type;
2550 }
f7deaa1a 2551
2552 auth_str[0] = '\0';
2553
5bd77a73 2554 if (auth_type == CUPSD_AUTH_BASIC || auth_type == CUPSD_AUTH_BASICDIGEST)
f7deaa1a 2555 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
5bd77a73 2556 else if (auth_type == CUPSD_AUTH_DIGEST)
f7deaa1a 2557 snprintf(auth_str, sizeof(auth_str), "Digest realm=\"CUPS\", nonce=\"%s\"",
2558 con->http.hostname);
2559#ifdef HAVE_GSSAPI
5bd77a73 2560 else if (auth_type == CUPSD_AUTH_NEGOTIATE && con->gss_output_token.length == 0)
f7deaa1a 2561 strlcpy(auth_str, "Negotiate", sizeof(auth_str));
2562#endif /* HAVE_GSSAPI */
2563
2564#ifdef HAVE_AUTHORIZATION_H
5bd77a73 2565 if (con->best && auth_type != CUPSD_AUTH_NEGOTIATE)
ef416fc2 2566 {
f7deaa1a 2567 int i; /* Looping var */
2568 char *auth_key; /* Auth key buffer */
2569 size_t auth_size; /* Size of remaining buffer */
2570
2571
2572 auth_key = auth_str + strlen(auth_str);
2573 auth_size = sizeof(auth_str) - (auth_key - auth_str);
2574
2575 for (i = 0; i < con->best->num_names; i ++)
2576 {
2577 if (!strncasecmp(con->best->names[i], "@AUTHKEY(", 9))
2578 {
2579 snprintf(auth_key, auth_size, ", authkey=\"%s\"",
2580 con->best->names[i] + 9);
2581 /* end parenthesis is stripped in conf.c */
2582 break;
2583 }
2584 else if (!strcasecmp(con->best->names[i], "@SYSTEM") &&
2585 SystemGroupAuthKey)
2586 {
2587 snprintf(auth_key, auth_size, ", authkey=\"%s\"", SystemGroupAuthKey);
2588 break;
2589 }
2590 }
ef416fc2 2591 }
f7deaa1a 2592#endif /* HAVE_AUTHORIZATION_H */
2593
bc44d920 2594 if (auth_str[0])
2595 {
355e94dc 2596 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendHeader: WWW-Authenticate: %s",
bc44d920 2597 auth_str);
2598
2599 if (httpPrintf(HTTP(con), "WWW-Authenticate: %s\r\n", auth_str) < 0)
2600 return (0);
2601 }
ef416fc2 2602 }
2603
f7deaa1a 2604#ifdef HAVE_GSSAPI
2605 /*
2606 * WWW-Authenticate: Negotiate can be included even for
2607 * non-401 replies...
2608 */
2609
5a738aea 2610 if (con->gss_output_token.length > 0 && con->gss_output_token.length <= 65536)
f7deaa1a 2611 {
f7deaa1a 2612 OM_uint32 minor_status; /* Minor status code */
5a738aea
MS		 2613 int bufsize; /* Size of output token buffer */
2614
2615
2616 bufsize = con->gss_output_token.length * 4 / 3 + 2;
2617
2618 if (bufsize > gss_bufsize)
2619 {
2620 char *buf; /* New buffer */
2621
f7deaa1a 2622
5a738aea 2623 bufsize = (bufsize + 1023) & 1023;/* Round up */
f7deaa1a 2624
5a738aea
MS		 2625 if (gss_buf)
2626 buf = realloc(gss_buf, bufsize);
2627 else
2628 buf = malloc(bufsize);
2629
2630 if (!buf)
2631 {
2632 cupsdLogMessage(CUPSD_LOG_ERROR,
2633 "Unable to allocate %d bytes for Kerberos credentials!",
2634 bufsize);
2635 return (0);
2636 }
2637
2638 gss_buf = buf;
2639 gss_bufsize = bufsize;
2640 }
2641
2642 httpEncode64_2(gss_buf, gss_bufsize,
2643 con->gss_output_token.value,
f7deaa1a 2644 con->gss_output_token.length);
2645 gss_release_buffer(&minor_status, &con->gss_output_token);
2646
355e94dc 2647 cupsdLogMessage(CUPSD_LOG_DEBUG,
5a738aea 2648 "cupsdSendHeader: WWW-Authenticate: Negotiate %s", gss_buf);
355e94dc 2649
5a738aea
MS		 2650 if (httpPrintf(HTTP(con), "WWW-Authenticate: Negotiate %s\r\n",
2651 gss_buf) < 0)
f7deaa1a 2652 return (0);
2653 }
5a738aea
MS		 2654 else if (con->gss_output_token.length > 65536)
2655 {
2656 cupsdLogMessage(CUPSD_LOG_ERROR,
2657 "Kerberos credentials larger than 64k (%d)!",
ac884b6a 2658 (int)con->gss_output_token.length);
5a738aea
MS		 2659 return (0);
2660 }
f7deaa1a 2661#endif /* HAVE_GSSAPI */
2662
e1d6a774 2663 if (con->language && strcmp(con->language->language, "C"))
ef416fc2 2664 {
2665 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2666 con->language->language) < 0)
2667 return (0);
2668 }
2669
e1d6a774 2670 if (type)
ef416fc2 2671 {
2672 if (!strcmp(type, "text/html"))
2673 {
2674 if (httpPrintf(HTTP(con),
2675 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2676 return (0);
2677 }
2678 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2679 return (0);
2680 }
2681
2682 return (1);
2683}
2684
2685
2686/*
2687 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2688 */
2689
2690void
2691cupsdUpdateCGI(void)
2692{
2693 char *ptr, /* Pointer to end of line in buffer */
2694 message[1024]; /* Pointer to message text */
2695 int loglevel; /* Log level for message */
2696
2697
2698 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2699 message, sizeof(message))) != NULL)
2700 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2701 break;
2702
d09495fa 2703 if (ptr == NULL && !CGIStatusBuffer->bufused)
ef416fc2 2704 {
2705 /*
2706 * Fatal error on pipe - should never happen!
2707 */
2708
2709 cupsdLogMessage(CUPSD_LOG_CRIT,
2710 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2711 strerror(errno));
2712 }
2713}
2714
2715
2716/*
2717 * 'cupsdWriteClient()' - Write data to a client as needed.
2718 */
2719
f7deaa1a 2720void
ef416fc2 2721cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2722{
2723 int bytes; /* Number of bytes written */
2724 char buf[16385]; /* Data buffer */
2725 char *bufptr; /* Pointer into buffer */
2726 ipp_state_t ipp_state; /* IPP state value */
2727
2728
2729#ifdef DEBUG
2730 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b94498cf 2731 "cupsdWriteClient(con=%p) %d response=%p(%d), file=%d "
ef416fc2 2732 "pipe_pid=%d state=%d",
ae71f5de
MS		 2733 con, con->http.fd, con->response,
2734 con->response ? con->response->state : -1,
b94498cf 2735 con->file, con->pipe_pid, con->http.state);
ef416fc2 2736#endif /* DEBUG */
2737
2738 if (con->http.state != HTTP_GET_SEND &&
2739 con->http.state != HTTP_POST_SEND)
f7deaa1a 2740 return;
2741
2742 if (con->pipe_pid)
2743 {
2744 /*
2745 * Make sure we select on the CGI output...
2746 */
2747
f899b121 2748 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
f7deaa1a 2749
2750 if (!con->file_ready)
2751 {
2752 /*
2753 * Try again later when there is CGI output available...
2754 */
2755
2756 cupsdRemoveSelect(con->http.fd);
2757 return;
2758 }
2759
2760 con->file_ready = 0;
2761 }
ef416fc2 2762
b94498cf 2763 if (con->response && con->response->state != IPP_DATA)
ef416fc2 2764 {
07725fee 2765 ipp_state = ippWrite(HTTP(con), con->response);
b94498cf 2766 bytes = ipp_state != IPP_ERROR &&
2767 (con->file >= 0 || ipp_state != IPP_DATA);
ef416fc2 2768 }
2769 else if ((bytes = read(con->file, buf, sizeof(buf) - 1)) > 0)
2770 {
2771 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2772 "cupsdWriteClient: Read %d bytes from file %d...",
2773 bytes, con->file);
2774
2775 if (con->pipe_pid && !con->got_fields)
2776 {
2777 /*
2778 * Inspect the data for Content-Type and other fields.
2779 */
2780
2781 buf[bytes] = '\0';
2782
2783 for (bufptr = buf; !con->got_fields && *bufptr; bufptr ++)
d1c13e16 2784 {
ef416fc2 2785 if (*bufptr == '\n')
2786 {
2787 /*
2788 * Send line to client...
2789 */
2790
2791 if (bufptr > buf && bufptr[-1] == '\r')
2792 bufptr[-1] = '\0';
2793 *bufptr++ = '\0';
2794
d1c13e16 2795 cupsdLogMessage(CUPSD_LOG_DEBUG, "Script header: %s", buf);
ef416fc2 2796
2797 if (!con->sent_header)
2798 {
2799 /*
2800 * Handle redirection and CGI status codes...
2801 */
2802
2803 if (!strncasecmp(buf, "Location:", 9))
d6ae789d 2804 {
5bd77a73 2805 cupsdSendHeader(con, HTTP_SEE_OTHER, NULL, CUPSD_AUTH_NONE);
07725fee 2806 con->sent_header = 2;
2807
d6ae789d 2808 if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
f7deaa1a 2809 return;
d6ae789d 2810 }
ef416fc2 2811 else if (!strncasecmp(buf, "Status:", 7))
07725fee 2812 {
5bd77a73 2813 cupsdSendError(con, (http_status_t)atoi(buf + 7), CUPSD_AUTH_NONE);
07725fee 2814 con->sent_header = 2;
2815 }
ef416fc2 2816 else
4744bd90 2817 {
5bd77a73 2818 cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE);
07725fee 2819 con->sent_header = 1;
ef416fc2 2820
4744bd90 2821 if (con->http.version == HTTP_1_1)
2822 {
4744bd90 2823 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
f7deaa1a 2824 return;
4744bd90 2825 }
2826 }
ef416fc2 2827 }
2828
2829 if (strncasecmp(buf, "Status:", 7))
2830 httpPrintf(HTTP(con), "%s\r\n", buf);
2831
2832 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d %s",
2833 con->http.fd, buf);
2834
2835 /*
2836 * Update buffer...
2837 */
2838
2839 bytes -= (bufptr - buf);
d1c13e16
MS		 2840
2841 if (bytes > 0)
2842 memmove(buf, bufptr, bytes + 1);
2843 else
2844 buf[0] = '\0';
2845
ef416fc2 2846 bufptr = buf - 1;
2847
2848 /*
2849 * See if the line was empty...
2850 */
2851
2852 if (con->field_col == 0)
d09495fa 2853 {
ef416fc2 2854 con->got_fields = 1;
d09495fa 2855
07725fee 2856 if (cupsdFlushHeader(con) < 0)
2857 {
2858 cupsdCloseClient(con);
f7deaa1a 2859 return;
07725fee 2860 }
d09495fa 2861
2862 if (con->http.version == HTTP_1_1)
2863 con->http.data_encoding = HTTP_ENCODE_CHUNKED;
2864 }
ef416fc2 2865 else
2866 con->field_col = 0;
2867 }
2868 else if (*bufptr != '\r')
2869 con->field_col ++;
d1c13e16 2870 }
ef416fc2 2871
2872 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2873 "cupsdWriteClient: %d bytes=%d, got_fields=%d",
2874 con->http.fd, bytes, con->got_fields);
2875
2876 if (bytes > 0 && !con->got_fields)
2877 {
2878 /*
2879 * Remaining text needs to go out...
2880 */
2881
2882 httpPrintf(HTTP(con), "%s", buf);
2883
2884 con->http.activity = time(NULL);
f7deaa1a 2885 return;
ef416fc2 2886 }
2887 else if (bytes == 0)
47879b8b 2888 {
ef416fc2 2889 con->http.activity = time(NULL);
47879b8b
MS		 2890 return;
2891 }
ef416fc2 2892 }
2893
4744bd90 2894 if (bytes > 0)
ef416fc2 2895 {
4744bd90 2896 if (httpWrite2(HTTP(con), buf, bytes) < 0)
2897 {
2898 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2899 "cupsdWriteClient: %d Write of %d bytes failed!",
2900 con->http.fd, bytes);
ef416fc2 2901
4744bd90 2902 cupsdCloseClient(con);
f7deaa1a 2903 return;
4744bd90 2904 }
ef416fc2 2905
01ce6322
MS		 2906 if (con->http.data_encoding == HTTP_ENCODE_CHUNKED)
2907 httpFlushWrite(HTTP(con));
ae71f5de 2908
4744bd90 2909 con->bytes += bytes;
ef416fc2 2910
4744bd90 2911 if (con->http.state == HTTP_WAITING)
2912 bytes = 0;
2913 }
ef416fc2 2914 }
2915
2916 if (bytes <= 0)
2917 {
2918 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d bytes < 0",
2919 con->http.fd);
2920
2921 cupsdLogRequest(con, HTTP_OK);
2922
2923 httpFlushWrite(HTTP(con));
2924
07725fee 2925 if (con->http.data_encoding == HTTP_ENCODE_CHUNKED && con->sent_header == 1)
ef416fc2 2926 {
07725fee 2927 if (httpWrite2(HTTP(con), "", 0) < 0)
ef416fc2 2928 {
2929 cupsdCloseClient(con);
f7deaa1a 2930 return;
ef416fc2 2931 }
2932 }
2933
2934 con->http.state = HTTP_WAITING;
2935
f7deaa1a 2936 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 2937
2938 if (con->file >= 0)
2939 {
f7deaa1a 2940 cupsdRemoveSelect(con->file);
ef416fc2 2941
2942 if (con->pipe_pid)
2943 cupsdEndProcess(con->pipe_pid, 0);
2944
2945 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2946 "cupsdWriteClient: %d Closing data file %d.",
2947 con->http.fd, con->file);
2948
2949 close(con->file);
2950 con->file = -1;
2951 con->pipe_pid = 0;
2952 }
2953
2954 if (con->filename)
2955 {
2956 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2957 "cupsdWriteClient: %d Removing temp file %s",
2958 con->http.fd, con->filename);
2959 unlink(con->filename);
2960 cupsdClearString(&con->filename);
2961 }
2962
2abf387c 2963 if (con->request)
ef416fc2 2964 {
2965 ippDelete(con->request);
2966 con->request = NULL;
2967 }
2968
2abf387c 2969 if (con->response)
ef416fc2 2970 {
2971 ippDelete(con->response);
2972 con->response = NULL;
2973 }
2974
2975 cupsdClearString(&con->command);
2976 cupsdClearString(&con->options);
b86bc4cf 2977 cupsdClearString(&con->query_string);
ef416fc2 2978
2979 if (!con->http.keep_alive)
2980 {
2981 cupsdCloseClient(con);
f7deaa1a 2982 return;
ef416fc2 2983 }
2984 }
2985
2986 con->http.activity = time(NULL);
f7deaa1a 2987}
ef416fc2 2988
f7deaa1a 2989
e1d6a774 2990/*
2991 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2992 */
2993
2994static int /* O - 1 if modified since */
2995check_if_modified(
2996 cupsd_client_t *con, /* I - Client connection */
2997 struct stat *filestats) /* I - File information */
2998{
2999 char *ptr; /* Pointer into field */
3000 time_t date; /* Time/date value */
3001 off_t size; /* Size/length value */
3002
3003
3004 size = 0;
3005 date = 0;
3006 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
3007
3008 if (*ptr == '\0')
3009 return (1);
3010
3011 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3012 "check_if_modified: %d If-Modified-Since=\"%s\"",
3013 con->http.fd, ptr);
3014
3015 while (*ptr != '\0')
3016 {
3017 while (isspace(*ptr) || *ptr == ';')
3018 ptr ++;
3019
3020 if (strncasecmp(ptr, "length=", 7) == 0)
3021 {
3022 ptr += 7;
3023 size = strtoll(ptr, NULL, 10);
3024
3025 while (isdigit(*ptr))
3026 ptr ++;
3027 }
3028 else if (isalpha(*ptr))
3029 {
3030 date = httpGetDateTime(ptr);
3031 while (*ptr != '\0' && *ptr != ';')
3032 ptr ++;
3033 }
e53920b9 3034 else
3035 ptr ++;
e1d6a774 3036 }
3037
3038 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3039 "check_if_modified: %d sizes=" CUPS_LLFMT ","
3040 CUPS_LLFMT " dates=%d,%d",
3041 con->http.fd, CUPS_LLCAST size,
3042 CUPS_LLCAST filestats->st_size, (int)date,
3043 (int)filestats->st_mtime);
3044
3045 return ((size != filestats->st_size && size != 0) ||
3046 (date < filestats->st_mtime && date != 0) ||
3047 (size == 0 && date == 0));
3048}
3049
3050
3dfe78b3
MS		 3051/*
3052 * 'compare_clients()' - Compare two client connections.
3053 */
3054
3055static int /* O - Result of comparison */
3056compare_clients(cupsd_client_t *a, /* I - First client */
3057 cupsd_client_t *b, /* I - Second client */
3058 void *data) /* I - User data (not used) */
3059{
3060 (void)data;
3061
3062 if (a == b)
3063 return (0);
3064 else if (a < b)
3065 return (-1);
3066 else
3067 return (1);
3068}
3069
3070
ee571f26
MS		 3071/*
3072 * 'data_ready()' - Check whether data is available from a client.
3073 */
3074
3075static int /* O - 1 if data is ready, 0 otherwise */
3076data_ready(cupsd_client_t *con) /* I - Client */
3077{
3078 if (con->http.used > 0)
3079 return (1);
3080#ifdef HAVE_SSL
3081 else if (con->http.tls)
3082 {
3083# ifdef HAVE_LIBSSL
3084 if (SSL_pending((SSL *)(con->http.tls)))
3085 return (1);
3086# elif defined(HAVE_GNUTLS)
3087 if (gnutls_record_check_pending(((http_tls_t *)(con->http.tls))->session))
3088 return (1);
3089# elif defined(HAVE_CDSASSL)
3090 size_t bytes; /* Bytes that are available */
3091
3092 if (!SSLGetBufferedReadSize(((http_tls_t *)(con->http.tls))->session,
3093 &bytes) && bytes > 0)
3094 return (1);
3095# endif /* HAVE_LIBSSL */
3096 }
3097#endif /* HAVE_SSL */
3098
3099 return (0);
3100}
3101
3102
80ca4592 3103#ifdef HAVE_SSL
e1d6a774 3104/*
3105 * 'encrypt_client()' - Enable encryption for the client...
3106 */
3107
3108static int /* O - 1 on success, 0 on error */
3109encrypt_client(cupsd_client_t *con) /* I - Client to encrypt */
3110{
80ca4592 3111# ifdef HAVE_LIBSSL
e1d6a774 3112 SSL_CTX *context; /* Context for encryption */
3113 SSL *conn; /* Connection for encryption */
411affcf 3114 BIO *bio; /* BIO data */
e1d6a774 3115 unsigned long error; /* Error code */
3116
3117
8ca02f3c 3118 /*
3119 * Verify that we have a certificate...
3120 */
3121
3122 if (access(ServerKey, 0) || access(ServerCertificate, 0))
3123 {
3124 /*
3125 * Nope, make a self-signed certificate...
3126 */
3127
b86bc4cf 3128 if (!make_certificate(con))
8ca02f3c 3129 return (0);
3130 }
3131
e1d6a774 3132 /*
3133 * Create the SSL context and accept the connection...
3134 */
3135
3136 context = SSL_CTX_new(SSLv23_server_method());
3137
3138 SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
b19ccc9e 3139 if (SSLOptions & CUPSD_SSL_NOEMPTY)
58dc1933 3140 SSL_CTX_set_options(context, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
e1d6a774 3141 SSL_CTX_use_PrivateKey_file(context, ServerKey, SSL_FILETYPE_PEM);
58dc1933 3142 SSL_CTX_use_certificate_chain_file(context, ServerCertificate);
e1d6a774 3143
411affcf 3144 bio = BIO_new(_httpBIOMethods());
3145 BIO_ctrl(bio, BIO_C_SET_FILE_PTR, 0, (char *)HTTP(con));
3146
e1d6a774 3147 conn = SSL_new(context);
411affcf 3148 SSL_set_bio(conn, bio, bio);
e1d6a774 3149
e1d6a774 3150 if (SSL_accept(conn) != 1)
3151 {
3152 cupsdLogMessage(CUPSD_LOG_ERROR,
3153 "encrypt_client: Unable to encrypt connection from %s!",
3154 con->http.hostname);
3155
3156 while ((error = ERR_get_error()) != 0)
3157 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
3158 ERR_error_string(error, NULL));
3159
3160 SSL_CTX_free(context);
3161 SSL_free(conn);
3162 return (0);
3163 }
3164
3165 cupsdLogMessage(CUPSD_LOG_DEBUG,
3166 "encrypt_client: %d Connection from %s now encrypted.",
3167 con->http.fd, con->http.hostname);
3168
3169 con->http.tls = conn;
3170 return (1);
f7deaa1a 3171
80ca4592 3172# elif defined(HAVE_GNUTLS)
e1d6a774 3173 http_tls_t *conn; /* TLS session object */
3174 int error; /* Error code */
3175 gnutls_certificate_server_credentials *credentials;
3176 /* TLS credentials */
3177
3178
3179 /*
3180 * Verify that we have a certificate...
3181 */
3182
3183 if (access(ServerKey, 0) || access(ServerCertificate, 0))
3184 {
3185 /*
3186 * Nope, make a self-signed certificate...
3187 */
3188
b86bc4cf 3189 if (!make_certificate(con))
8ca02f3c 3190 return (0);
e1d6a774 3191 }
3192
3193 /*
3194 * Create the SSL object and perform the SSL handshake...
3195 */
3196
89d46774 3197 conn = (http_tls_t *)malloc(sizeof(http_tls_t));
e1d6a774 3198
3199 if (conn == NULL)
3200 return (0);
3201
3202 credentials = (gnutls_certificate_server_credentials *)
3203 malloc(sizeof(gnutls_certificate_server_credentials));
3204 if (credentials == NULL)
3205 {
3206 cupsdLogMessage(CUPSD_LOG_ERROR,
3207 "encrypt_client: Unable to encrypt connection from %s!",
3208 con->http.hostname);
3209 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s", strerror(errno));
3210
3211 free(conn);
3212 return (0);
3213 }
3214
3215 gnutls_certificate_allocate_credentials(credentials);
f7deaa1a 3216 gnutls_certificate_set_x509_key_file(*credentials, ServerCertificate,
e1d6a774 3217 ServerKey, GNUTLS_X509_FMT_PEM);
3218
3219 gnutls_init(&(conn->session), GNUTLS_SERVER);
3220 gnutls_set_default_priority(conn->session);
3221 gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
411affcf 3222 gnutls_transport_set_ptr(conn->session, (gnutls_transport_ptr)HTTP(con));
3223 gnutls_transport_set_pull_function(conn->session, _httpReadGNUTLS);
3224 gnutls_transport_set_push_function(conn->session, _httpWriteGNUTLS);
e1d6a774 3225
3226 error = gnutls_handshake(conn->session);
3227
3228 if (error != GNUTLS_E_SUCCESS)
3229 {
3230 cupsdLogMessage(CUPSD_LOG_ERROR,
3231 "encrypt_client: Unable to encrypt connection from %s!",
3232 con->http.hostname);
3233 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
3234 gnutls_strerror(error));
3235
3236 gnutls_deinit(conn->session);
3237 gnutls_certificate_free_credentials(*credentials);
3238 free(conn);
3239 free(credentials);
3240 return (0);
3241 }
3242
3243 cupsdLogMessage(CUPSD_LOG_DEBUG,
3244 "encrypt_client: %d Connection from %s now encrypted.",
3245 con->http.fd, con->http.hostname);
3246
3247 conn->credentials = credentials;
3248 con->http.tls = conn;
3249 return (1);
3250
80ca4592 3251# elif defined(HAVE_CDSASSL)
89d46774 3252 OSStatus error; /* Error code */
3253 http_tls_t *conn; /* CDSA connection information */
e1d6a774 3254
3255
89d46774 3256 if ((conn = (http_tls_t *)malloc(sizeof(http_tls_t))) == NULL)
3257 return (0);
e1d6a774 3258
89d46774 3259 error = 0;
3260 conn->session = NULL;
b86bc4cf 3261 conn->certsArray = get_cdsa_certificate(con);
e1d6a774 3262
8ca02f3c 3263 if (!conn->certsArray)
3264 {
3265 /*
3266 * No keychain (yet), make a self-signed certificate...
3267 */
3268
b86bc4cf 3269 if (make_certificate(con))
3270 conn->certsArray = get_cdsa_certificate(con);
8ca02f3c 3271 }
3272
89d46774 3273 if (!conn->certsArray)
e1d6a774 3274 {
3275 cupsdLogMessage(CUPSD_LOG_ERROR,
411affcf 3276 "encrypt_client: Could not find signing key in keychain "
e1d6a774 3277 "\"%s\"", ServerCertificate);
3278 error = errSSLBadCert; /* errSSLBadConfiguration is a better choice, but not available on 10.2.x */
3279 }
3280
3281 if (!error)
89d46774 3282 error = SSLNewContext(true, &conn->session);
e1d6a774 3283
3284 if (!error)
89d46774 3285 error = SSLSetIOFuncs(conn->session, _httpReadCDSA, _httpWriteCDSA);
3286
3287 if (!error)
ed486911 3288 error = SSLSetProtocolVersionEnabled(conn->session, kSSLProtocol2, false);
e1d6a774 3289
3290 if (!error)
411affcf 3291 error = SSLSetConnection(conn->session, HTTP(con));
e1d6a774 3292
3293 if (!error)
89d46774 3294 error = SSLSetAllowsExpiredCerts(conn->session, true);
e1d6a774 3295
3296 if (!error)
89d46774 3297 error = SSLSetAllowsAnyRoot(conn->session, true);
ef416fc2 3298
89d46774 3299 if (!error)
3300 error = SSLSetCertificate(conn->session, conn->certsArray);
ef416fc2 3301
e1d6a774 3302 if (!error)
3303 {
3304 /*
3305 * Perform SSL/TLS handshake
3306 */
ef416fc2 3307
89d46774 3308 while ((error = SSLHandshake(conn->session)) == errSSLWouldBlock)
e1d6a774 3309 usleep(1000);
3310 }
ef416fc2 3311
e1d6a774 3312 if (error)
3313 {
3314 cupsdLogMessage(CUPSD_LOG_ERROR,
3315 "encrypt_client: Unable to encrypt connection from %s!",
3316 con->http.hostname);
ef416fc2 3317
ed486911 3318 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s (%d)",
3319 cssmErrorString(error), (int)error);
ef416fc2 3320
e1d6a774 3321 con->http.error = error;
3322 con->http.status = HTTP_ERROR;
ef416fc2 3323
89d46774 3324 if (conn->session)
3325 SSLDisposeContext(conn->session);
3326
3327 if (conn->certsArray)
3328 CFRelease(conn->certsArray);
3329
3330 free(conn);
ef416fc2 3331
e1d6a774 3332 return (0);
ef416fc2 3333 }
3334
e1d6a774 3335 cupsdLogMessage(CUPSD_LOG_DEBUG,
3336 "encrypt_client: %d Connection from %s now encrypted.",
3337 con->http.fd, con->http.hostname);
ef416fc2 3338
e1d6a774 3339 con->http.tls = conn;
3340 return (1);
3341
80ca4592 3342# endif /* HAVE_LIBSSL */
ef416fc2 3343}
80ca4592 3344#endif /* HAVE_SSL */
ef416fc2 3345
3346
3347#ifdef HAVE_CDSASSL
3348/*
b86bc4cf 3349 * 'get_cdsa_certificate()' - Get a SSL/TLS certificate from the System keychain.
ef416fc2 3350 */
3351
b86bc4cf 3352static CFArrayRef /* O - Array of certificates */
3353get_cdsa_certificate(cupsd_client_t *con) /* I - Client connection */
ef416fc2 3354{
3355 OSStatus err; /* Error info */
b86bc4cf 3356 SecKeychainRef keychain; /* Keychain reference */
3357 SecIdentitySearchRef search; /* Search reference */
ef416fc2 3358 SecIdentityRef identity; /* Identity */
b86bc4cf 3359 CFArrayRef certificates = NULL;
3360 /* Certificate array */
ef416fc2 3361
3362
b86bc4cf 3363 if ((err = SecKeychainOpen(ServerCertificate, &keychain)))
3364 {
3365 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot open keychain \"%s\", %s",
3366 ServerCertificate, cssmErrorString(err));
3367 return (NULL);
3368 }
ef416fc2 3369
b86bc4cf 3370# if HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY
3371 /*
3372 * Use a policy to search for valid certificates who's common name matches the
3373 * servername...
3374 */
3375
3376 SecPolicySearchRef policy_search; /* Policy search ref */
3377 SecPolicyRef policy; /* Policy ref */
3378 CSSM_DATA options; /* Policy options */
3379 CSSM_APPLE_TP_SSL_OPTIONS
3380 ssl_options; /* SSL Option for hostname */
3381
3382
1f0275e3
MS		 3383 if (SecPolicySearchCreate(CSSM_CERT_X_509v3, &CSSMOID_APPLE_TP_SSL,
3384 NULL, &policy_search))
ef416fc2 3385 {
b86bc4cf 3386 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create a policy search reference");
3387 CFRelease(keychain);
3388 return (NULL);
3389 }
ef416fc2 3390
1f0275e3 3391 if (SecPolicySearchCopyNext(policy_search, &policy))
b86bc4cf 3392 {
3393 cupsdLogMessage(CUPSD_LOG_ERROR,
3394 "Cannot find a policy to use for searching");
3395 CFRelease(keychain);
3396 CFRelease(policy_search);
3397 return (NULL);
3398 }
ef416fc2 3399
b86bc4cf 3400 memset(&ssl_options, 0, sizeof(ssl_options));
3401 ssl_options.Version = CSSM_APPLE_TP_SSL_OPTS_VERSION;
3402 ssl_options.ServerName = con->servername;
3403 ssl_options.ServerNameLen = strlen(con->servername);
ef416fc2 3404
b86bc4cf 3405 options.Data = (uint8 *)&ssl_options;
3406 options.Length = sizeof(ssl_options);
3407
1f0275e3 3408 if (SecPolicySetValue(policy, &options))
b86bc4cf 3409 {
3410 cupsdLogMessage(CUPSD_LOG_ERROR,
3411 "Cannot set policy value to use for searching");
3412 CFRelease(keychain);
3413 CFRelease(policy_search);
3414 return (NULL);
3415 }
3416
3417 err = SecIdentitySearchCreateWithPolicy(policy, NULL, CSSM_KEYUSE_SIGN,
3418 keychain, FALSE, &search);
3419# else
3420 /*
3421 * Assume there is exactly one SecIdentity in the keychain...
3422 */
3423
3424 err = SecIdentitySearchCreate(keychain, CSSM_KEYUSE_SIGN, &search);
3425# endif /* HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY */
3426
3427 if (err)
3428 cupsdLogMessage(CUPSD_LOG_DEBUG,
3429 "Cannot create keychain search reference: %s",
3430 cssmErrorString(err));
3431 else
3432 {
3433 if ((err = SecIdentitySearchCopyNext(search, &identity)))
3434 {
3435 cupsdLogMessage(CUPSD_LOG_DEBUG,
ef416fc2 3436 "Cannot find signing key in keychain \"%s\", error %d",
3437 ServerCertificate, (int)err);
b86bc4cf 3438 }
3439 else
3440 {
3441 if (CFGetTypeID(identity) != SecIdentityGetTypeID())
3442 cupsdLogMessage(CUPSD_LOG_ERROR,
3443 "SecIdentitySearchCopyNext CFTypeID failure!");
ef416fc2 3444 else
3445 {
b86bc4cf 3446 if ((certificates = CFArrayCreate(NULL, (const void **)&identity,
3447 1, &kCFTypeArrayCallBacks)) == NULL)
3448 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create certificate array");
ef416fc2 3449 }
3450
b86bc4cf 3451 CFRelease(identity);
ef416fc2 3452 }
3453
b86bc4cf 3454 CFRelease(search);
ef416fc2 3455 }
3456
b86bc4cf 3457# if HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY
3458 CFRelease(policy);
3459 CFRelease(policy_search);
3460# endif /* HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY */
3461
3462 return (certificates);
ef416fc2 3463}
3464#endif /* HAVE_CDSASSL */
3465
3466
3467/*
3468 * 'get_file()' - Get a filename and state info.
3469 */
3470
3471static char * /* O - Real filename */
3472get_file(cupsd_client_t *con, /* I - Client connection */
3473 struct stat *filestats, /* O - File information */
3474 char *filename, /* IO - Filename buffer */
3475 int len) /* I - Buffer length */
3476{
3477 int status; /* Status of filesystem calls */
3478 char *ptr; /* Pointer info filename */
3479 int plen; /* Remaining length after pointer */
db1f069b 3480 char language[7]; /* Language subdirectory, if any */
ef416fc2 3481
3482
3483 /*
f7deaa1a 3484 * Figure out the real filename...
ef416fc2 3485 */
3486
db1f069b
MS		 3487 language[0] = '\0';
3488
ef416fc2 3489 if (!strncmp(con->uri, "/ppd/", 5))
3490 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
f7deaa1a 3491 else if (!strncmp(con->uri, "/rss/", 5) && !strchr(con->uri + 5, '/'))
3492 snprintf(filename, len, "%s/rss/%s", CacheDir, con->uri + 5);
ef416fc2 3493 else if (!strncmp(con->uri, "/admin/conf/", 12))
3494 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
3495 else if (!strncmp(con->uri, "/admin/log/", 11))
3496 {
2e4ff8af 3497 if (!strncmp(con->uri + 11, "access_log", 10) && AccessLog[0] == '/')
ef416fc2 3498 strlcpy(filename, AccessLog, len);
2e4ff8af 3499 else if (!strncmp(con->uri + 11, "error_log", 9) && ErrorLog[0] == '/')
ef416fc2 3500 strlcpy(filename, ErrorLog, len);
2e4ff8af 3501 else if (!strncmp(con->uri + 11, "page_log", 8) && PageLog[0] == '/')
ef416fc2 3502 strlcpy(filename, PageLog, len);
3503 else
3504 return (NULL);
3505 }
d6ae789d 3506 else if (con->language)
db1f069b
MS		 3507 {
3508 snprintf(language, sizeof(language), "/%s", con->language->language);
3509 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
3510 }
ef416fc2 3511 else
3512 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3513
3514 if ((ptr = strchr(filename, '?')) != NULL)
3515 *ptr = '\0';
3516
3517 /*
3518 * Grab the status for this language; if there isn't a language-specific file
3519 * then fallback to the default one...
3520 */
3521
db1f069b 3522 if ((status = stat(filename, filestats)) != 0 && language[0] &&
d6ae789d 3523 strncmp(con->uri, "/ppd/", 5) &&
3524 strncmp(con->uri, "/admin/conf/", 12) &&
3525 strncmp(con->uri, "/admin/log/", 11))
ef416fc2 3526 {
3527 /*
d6ae789d 3528 * Drop the country code...
ef416fc2 3529 */
3530
db1f069b
MS		 3531 language[3] = '\0';
3532 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
d6ae789d 3533
3534 if ((ptr = strchr(filename, '?')) != NULL)
3535 *ptr = '\0';
3536
3537 if ((status = stat(filename, filestats)) != 0)
ef416fc2 3538 {
d6ae789d 3539 /*
3540 * Drop the language prefix and try the root directory...
3541 */
3542
db1f069b 3543 language[0] = '\0';
ef416fc2 3544 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3545
3546 if ((ptr = strchr(filename, '?')) != NULL)
3547 *ptr = '\0';
3548
3549 status = stat(filename, filestats);
3550 }
3551 }
3552
3553 /*
3554 * If we're found a directory, get the index.html file instead...
3555 */
3556
3557 if (!status && S_ISDIR(filestats->st_mode))
3558 {
db1f069b
MS		 3559 /*
3560 * Make sure the URI ends with a slash...
3561 */
ef416fc2 3562
db1f069b
MS		 3563 if (con->uri[strlen(con->uri) - 1] != '/')
3564 strlcat(con->uri, "/", sizeof(con->uri));
ef416fc2 3565
db1f069b
MS		 3566 /*
3567 * Find the directory index file, trying every language...
3568 */
ef416fc2 3569
db1f069b 3570 do
ef416fc2 3571 {
db1f069b
MS		 3572 if (status && language[0])
3573 {
3574 /*
3575 * Try a different language subset...
3576 */
3577
3578 if (language[3])
3579 language[0] = '\0'; /* Strip country code */
3580 else
3581 language[0] = '\0'; /* Strip language */
3582 }
3583
3584 /*
3585 * Look for the index file...
3586 */
3587
3588 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
3589
3590 if ((ptr = strchr(filename, '?')) != NULL)
3591 *ptr = '\0';
3592
3593 ptr = filename + strlen(filename);
3594 plen = len - (ptr - filename);
3595
3596 strlcpy(ptr, "index.html", plen);
ef416fc2 3597 status = stat(filename, filestats);
db1f069b
MS		 3598
3599#ifdef HAVE_JAVA
3600 if (status)
3601 {
3602 strlcpy(ptr, "index.class", plen);
3603 status = stat(filename, filestats);
3604 }
ef416fc2 3605#endif /* HAVE_JAVA */
3606
3607#ifdef HAVE_PERL
db1f069b
MS		 3608 if (status)
3609 {
3610 strlcpy(ptr, "index.pl", plen);
3611 status = stat(filename, filestats);
3612 }
ef416fc2 3613#endif /* HAVE_PERL */
3614
3615#ifdef HAVE_PHP
db1f069b
MS		 3616 if (status)
3617 {
3618 strlcpy(ptr, "index.php", plen);
3619 status = stat(filename, filestats);
3620 }
ef416fc2 3621#endif /* HAVE_PHP */
3622
3623#ifdef HAVE_PYTHON
db1f069b
MS		 3624 if (status)
3625 {
3626 strlcpy(ptr, "index.pyc", plen);
3627 status = stat(filename, filestats);
3628 }
ef416fc2 3629
db1f069b
MS		 3630 if (status)
3631 {
3632 strlcpy(ptr, "index.py", plen);
3633 status = stat(filename, filestats);
3634 }
ef416fc2 3635#endif /* HAVE_PYTHON */
db1f069b
MS		 3636
3637 }
3638 while (status && language[0]);
ef416fc2 3639 }
3640
3641 cupsdLogMessage(CUPSD_LOG_DEBUG2, "get_file: %d filename=%s size=%d",
3642 con->http.fd, filename,
3643 status ? -1 : (int)filestats->st_size);
3644
3645 if (!status)
3646 con->http.data_remaining = (int)filestats->st_size;
3647
3648 if (status)
3649 return (NULL);
3650 else
3651 return (filename);
3652}
3653
3654
3655/*
3656 * 'install_conf_file()' - Install a configuration file.
3657 */
3658
3659static http_status_t /* O - Status */
3660install_conf_file(cupsd_client_t *con) /* I - Connection */
3661{
3662 cups_file_t *in, /* Input file */
3663 *out; /* Output file */
3664 char buffer[1024]; /* Copy buffer */
3665 int bytes; /* Number of bytes */
3666 char conffile[1024], /* Configuration filename */
3667 newfile[1024], /* New config filename */
3668 oldfile[1024]; /* Old config filename */
3669 struct stat confinfo; /* Config file info */
3670
3671
3672 /*
3673 * First construct the filenames...
3674 */
3675
3676 snprintf(conffile, sizeof(conffile), "%s%s", ServerRoot, con->uri + 11);
3677 snprintf(newfile, sizeof(newfile), "%s%s.N", ServerRoot, con->uri + 11);
3678 snprintf(oldfile, sizeof(oldfile), "%s%s.O", ServerRoot, con->uri + 11);
3679
3680 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...", conffile);
3681
3682 /*
3683 * Get the owner, group, and permissions of the configuration file.
3684 * If it doesn't exist, assign it to the User and Group in the
3685 * cupsd.conf file with mode 0640 permissions.
3686 */
3687
3688 if (stat(conffile, &confinfo))
3689 {
3690 confinfo.st_uid = User;
3691 confinfo.st_gid = Group;
3692 confinfo.st_mode = ConfigFilePerm;
3693 }
3694
3695 /*
3696 * Open the request file and new config file...
3697 */
3698
3699 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
3700 {
3701 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\" - %s",
3702 con->filename, strerror(errno));
3703 return (HTTP_SERVER_ERROR);
3704 }
3705
3706 if ((out = cupsFileOpen(newfile, "wb")) == NULL)
3707 {
3708 cupsFileClose(in);
3709 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open config file \"%s\" - %s",
3710 newfile, strerror(errno));
3711 return (HTTP_SERVER_ERROR);
3712 }
3713
3714 fchmod(cupsFileNumber(out), confinfo.st_mode);
3715 fchown(cupsFileNumber(out), confinfo.st_uid, confinfo.st_gid);
3716
3717 /*
3718 * Copy from the request to the new config file...
3719 */
3720
3721 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
3722 if (cupsFileWrite(out, buffer, bytes) < bytes)
3723 {
3724 cupsdLogMessage(CUPSD_LOG_ERROR,
3725 "Unable to copy to config file \"%s\" - %s",
3726 newfile, strerror(errno));
3727
3728 cupsFileClose(in);
3729 cupsFileClose(out);
3730 unlink(newfile);
3731
3732 return (HTTP_SERVER_ERROR);
3733 }
3734
3735 /*
3736 * Close the files...
3737 */
3738
3739 cupsFileClose(in);
3740 if (cupsFileClose(out))
3741 {
3742 cupsdLogMessage(CUPSD_LOG_ERROR,
3743 "Error file closing config file \"%s\" - %s",
3744 newfile, strerror(errno));
3745
3746 unlink(newfile);
3747
3748 return (HTTP_SERVER_ERROR);
3749 }
3750
3751 /*
3752 * Remove the request file...
3753 */
3754
3755 unlink(con->filename);
3756 cupsdClearString(&con->filename);
3757
3758 /*
3759 * Unlink the old backup, rename the current config file to the backup
3760 * filename, and rename the new config file to the config file name...
3761 */
3762
3763 if (unlink(oldfile))
3764 if (errno != ENOENT)
3765 {
3766 cupsdLogMessage(CUPSD_LOG_ERROR,
3767 "Unable to remove backup config file \"%s\" - %s",
3768 oldfile, strerror(errno));
3769
3770 unlink(newfile);
3771
3772 return (HTTP_SERVER_ERROR);
3773 }
3774
3775 if (rename(conffile, oldfile))
3776 if (errno != ENOENT)
3777 {
3778 cupsdLogMessage(CUPSD_LOG_ERROR,
3779 "Unable to rename old config file \"%s\" - %s",
3780 conffile, strerror(errno));
3781
3782 unlink(newfile);
3783
3784 return (HTTP_SERVER_ERROR);
3785 }
3786
3787 if (rename(newfile, conffile))
3788 {
3789 cupsdLogMessage(CUPSD_LOG_ERROR,
3790 "Unable to rename new config file \"%s\" - %s",
3791 newfile, strerror(errno));
3792
3793 rename(oldfile, conffile);
3794 unlink(newfile);
3795
3796 return (HTTP_SERVER_ERROR);
3797 }
3798
3799 /*
3800 * If the cupsd.conf file was updated, set the NeedReload flag...
3801 */
3802
3803 if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
3804 NeedReload = RELOAD_CUPSD;
3805 else
3806 NeedReload = RELOAD_ALL;
3807
3808 ReloadTime = time(NULL);
3809
3810 /*
3811 * Return that the file was created successfully...
3812 */
3813
3814 return (HTTP_CREATED);
3815}
3816
3817
e1d6a774 3818/*
3819 * 'is_cgi()' - Is the resource a CGI script/program?
3820 */
3821
3822static int /* O - 1 = CGI, 0 = file */
3823is_cgi(cupsd_client_t *con, /* I - Client connection */
3824 const char *filename, /* I - Real filename */
3825 struct stat *filestats, /* I - File information */
3826 mime_type_t *type) /* I - MIME type */
3827{
3828 const char *options; /* Options on URL */
3829
3830
3831 cupsdLogMessage(CUPSD_LOG_DEBUG2,
75bd9771 3832 "is_cgi(con=%p, filename=\"%s\", filestats=%p, type=%s/%s)",
e1d6a774 3833 con, filename, filestats, type ? type->super : "unknown",
3834 type ? type->type : "unknown");
3835
3836 /*
3837 * Get the options, if any...
3838 */
3839
3840 if ((options = strchr(con->uri, '?')) != NULL)
a0f6818e
MS		 3841 {
3842 options ++;
3843 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", options);
3844 }
b86bc4cf 3845
e1d6a774 3846 /*
3847 * Check for known types...
3848 */
3849
3850 if (!type || strcasecmp(type->super, "application"))
3851 {
3852 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3853 return (0);
3854 }
3855
3856 if (!strcasecmp(type->type, "x-httpd-cgi") &&
3857 (filestats->st_mode & 0111))
3858 {
3859 /*
3860 * "application/x-httpd-cgi" is a CGI script.
3861 */
3862
3863 cupsdSetString(&con->command, filename);
3864
a0f6818e
MS		 3865 if (options)
3866 cupsdSetStringf(&con->options, " %s", options);
e1d6a774 3867
3868 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3869 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3870 con->command, con->options);
3871
3872 return (1);
3873 }
3874#ifdef HAVE_JAVA
3875 else if (!strcasecmp(type->type, "x-httpd-java"))
3876 {
3877 /*
3878 * "application/x-httpd-java" is a Java servlet.
3879 */
3880
3881 cupsdSetString(&con->command, CUPS_JAVA);
3882
3883 if (options)
b94498cf 3884 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3885 else
b94498cf 3886 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3887
3888 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3889 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3890 con->command, con->options);
3891
3892 return (1);
3893 }
3894#endif /* HAVE_JAVA */
3895#ifdef HAVE_PERL
3896 else if (!strcasecmp(type->type, "x-httpd-perl"))
3897 {
3898 /*
3899 * "application/x-httpd-perl" is a Perl page.
3900 */
3901
3902 cupsdSetString(&con->command, CUPS_PERL);
3903
3904 if (options)
b94498cf 3905 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3906 else
b94498cf 3907 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3908
3909 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3910 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3911 con->command, con->options);
3912
3913 return (1);
3914 }
3915#endif /* HAVE_PERL */
3916#ifdef HAVE_PHP
3917 else if (!strcasecmp(type->type, "x-httpd-php"))
3918 {
3919 /*
3920 * "application/x-httpd-php" is a PHP page.
3921 */
3922
3923 cupsdSetString(&con->command, CUPS_PHP);
3924
3925 if (options)
b94498cf 3926 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3927 else
b94498cf 3928 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3929
3930 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3931 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3932 con->command, con->options);
3933
3934 return (1);
3935 }
3936#endif /* HAVE_PHP */
3937#ifdef HAVE_PYTHON
3938 else if (!strcasecmp(type->type, "x-httpd-python"))
3939 {
3940 /*
3941 * "application/x-httpd-python" is a Python page.
3942 */
3943
3944 cupsdSetString(&con->command, CUPS_PYTHON);
3945
3946 if (options)
b94498cf 3947 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3948 else
b94498cf 3949 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3950
3951 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3952 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3953 con->command, con->options);
3954
3955 return (1);
3956 }
3957#endif /* HAVE_PYTHON */
3958
3959 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3960
3961 return (0);
3962}
3963
3964
ef416fc2 3965/*
3966 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3967 */
3968
3969static int /* O - 0 if relative, 1 if absolute */
3970is_path_absolute(const char *path) /* I - Input path */
3971{
3972 /*
3973 * Check for a leading slash...
3974 */
3975
3976 if (path[0] != '/')
3977 return (0);
3978
3979 /*
3980 * Check for "/.." in the path...
3981 */
3982
3983 while ((path = strstr(path, "/..")) != NULL)
3984 {
3985 if (!path[3] || path[3] == '/')
3986 return (0);
3987
3988 path ++;
3989 }
3990
3991 /*
3992 * If we haven't found any relative paths, return 1 indicating an
3993 * absolute path...
3994 */
3995
3996 return (1);
3997}
3998
3999
8ca02f3c 4000#ifdef HAVE_SSL
4744bd90 4001/*
4002 * 'make_certificate()' - Make a self-signed SSL/TLS certificate.
4003 */
4004
8ca02f3c 4005static int /* O - 1 on success, 0 on failure */
b86bc4cf 4006make_certificate(cupsd_client_t *con) /* I - Client connection */
4744bd90 4007{
8ca02f3c 4008#if defined(HAVE_LIBSSL) && defined(HAVE_WAITPID)
d09495fa 4009 int pid, /* Process ID of command */
4010 status; /* Status of command */
4011 char command[1024], /* Command */
f7deaa1a 4012 *argv[12], /* Command-line arguments */
d09495fa 4013 *envp[MAX_ENV + 1], /* Environment variables */
4014 home[1024], /* HOME environment variable */
4015 infofile[1024], /* Type-in information for cert */
4016 seedfile[1024]; /* Random number seed file */
4017 int envc, /* Number of environment variables */
4018 bytes; /* Bytes written */
4019 cups_file_t *fp; /* Seed/info file */
4020 int infofd; /* Info file descriptor */
8ca02f3c 4021
4022
4023 /*
d09495fa 4024 * Run the "openssl" command to seed the random number generator and
4025 * generate a self-signed certificate that is good for 10 years:
4026 *
4027 * openssl rand -rand seedfile 1
8ca02f3c 4028 *
4029 * openssl req -new -x509 -keyout ServerKey \
4030 * -out ServerCertificate -days 3650 -nodes
d09495fa 4031 *
4032 * The seeding step is crucial in ensuring that the openssl command
4033 * does not block on systems without sufficient entropy...
8ca02f3c 4034 */
4035
4036 if (!cupsFileFind("openssl", getenv("PATH"), 1, command, sizeof(command)))
4037 {
4038 cupsdLogMessage(CUPSD_LOG_ERROR,
4039 "No SSL certificate and openssl command not found!");
4040 return (0);
4041 }
4042
d09495fa 4043 if (access("/dev/urandom", 0))
4044 {
4045 /*
4046 * If the system doesn't provide /dev/urandom, then any random source
4047 * will probably be blocking-style, so generate some random data to
4048 * use as a seed for the certificate. Note that we have already
4049 * seeded the random number generator in cupsdInitCerts()...
4050 */
4051
4052 cupsdLogMessage(CUPSD_LOG_INFO,
4053 "Seeding the random number generator...");
4054
4055 snprintf(home, sizeof(home), "HOME=%s", TempDir);
4056
4057 /*
4058 * Write the seed file...
4059 */
4060
4061 if ((fp = cupsTempFile2(seedfile, sizeof(seedfile))) == NULL)
4062 {
4063 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create seed file %s - %s",
4064 seedfile, strerror(errno));
4065 return (0);
4066 }
4067
4068 for (bytes = 0; bytes < 262144; bytes ++)
4069 cupsFilePutChar(fp, random());
4070
4071 cupsFileClose(fp);
4072
4073 /*
4074 * Run the openssl command to seed its random number generator...
4075 */
4076
4077 argv[0] = "openssl";
4078 argv[1] = "rand";
4079 argv[2] = "-rand";
4080 argv[3] = seedfile;
4081 argv[4] = "1";
4082 argv[5] = NULL;
4083
4084 envc = cupsdLoadEnv(envp, MAX_ENV);
4085 envp[envc++] = home;
4086 envp[envc] = NULL;
4087
a4924f6c
MS		 4088 if (!cupsdStartProcess(command, argv, envp, -1, -1, -1, -1, -1, 1, NULL,
4089 &pid))
d09495fa 4090 {
4091 unlink(seedfile);
4092 return (0);
4093 }
4094
4095 while (waitpid(pid, &status, 0) < 0)
4096 if (errno != EINTR)
4097 {
4098 status = 1;
4099 break;
4100 }
4101
4102 cupsdFinishProcess(pid, command, sizeof(command));
4103
4104 /*
4105 * Remove the seed file, as it is no longer needed...
4106 */
4107
4108 unlink(seedfile);
4109
4110 if (status)
4111 {
4112 if (WIFEXITED(status))
4113 cupsdLogMessage(CUPSD_LOG_ERROR,
4114 "Unable to seed random number generator - "
4115 "the openssl command stopped with status %d!",
4116 WEXITSTATUS(status));
4117 else
4118 cupsdLogMessage(CUPSD_LOG_ERROR,
4119 "Unable to seed random number generator - "
4120 "the openssl command crashed on signal %d!",
4121 WTERMSIG(status));
4122
4123 return (0);
4124 }
4125 }
4126
4127 /*
4128 * Create a file with the certificate information fields...
4129 *
4130 * Note: This assumes that the default questions are asked by the openssl
4131 * command...
4132 */
4133
4134 if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
4135 {
4136 cupsdLogMessage(CUPSD_LOG_ERROR,
4137 "Unable to create certificate information file %s - %s",
4138 infofile, strerror(errno));
4139 return (0);
4140 }
4141
4142 cupsFilePrintf(fp, ".\n.\n.\n%s\n.\n%s\n%s\n",
4143 ServerName, ServerName, ServerAdmin);
4144 cupsFileClose(fp);
4145
8ca02f3c 4146 cupsdLogMessage(CUPSD_LOG_INFO,
4147 "Generating SSL server key and certificate...");
4148
4149 argv[0] = "openssl";
4150 argv[1] = "req";
4151 argv[2] = "-new";
4152 argv[3] = "-x509";
4153 argv[4] = "-keyout";
4154 argv[5] = ServerKey;
4155 argv[6] = "-out";
4156 argv[7] = ServerCertificate;
4157 argv[8] = "-days";
4158 argv[9] = "3650";
4159 argv[10] = "-nodes";
4160 argv[11] = NULL;
4161
4162 cupsdLoadEnv(envp, MAX_ENV);
4163
d09495fa 4164 infofd = open(infofile, O_RDONLY);
4165
a4924f6c
MS		 4166 if (!cupsdStartProcess(command, argv, envp, infofd, -1, -1, -1, -1, 1, NULL,
4167 &pid))
d09495fa 4168 {
4169 close(infofd);
4170 unlink(infofile);
8ca02f3c 4171 return (0);
d09495fa 4172 }
4173
4174 close(infofd);
4175 unlink(infofile);
8ca02f3c 4176
4177 while (waitpid(pid, &status, 0) < 0)
4178 if (errno != EINTR)
4179 {
4180 status = 1;
4181 break;
4182 }
4183
4184 cupsdFinishProcess(pid, command, sizeof(command));
4185
4186 if (status)
4187 {
4188 if (WIFEXITED(status))
4189 cupsdLogMessage(CUPSD_LOG_ERROR,
4190 "Unable to create SSL server key and certificate - "
4191 "the openssl command stopped with status %d!",
4192 WEXITSTATUS(status));
4193 else
4194 cupsdLogMessage(CUPSD_LOG_ERROR,
4195 "Unable to create SSL server key and certificate - "
4196 "the openssl command crashed on signal %d!",
4197 WTERMSIG(status));
4198 }
4199 else
4200 {
4201 cupsdLogMessage(CUPSD_LOG_INFO, "Created SSL server key file \"%s\"...",
4202 ServerKey);
4203 cupsdLogMessage(CUPSD_LOG_INFO,
4204 "Created SSL server certificate file \"%s\"...",
4205 ServerCertificate);
4206 }
4207
4208 return (!status);
4209
4210#elif defined(HAVE_GNUTLS)
4744bd90 4211 gnutls_x509_crt crt; /* Self-signed certificate */
4212 gnutls_x509_privkey key; /* Encryption key */
4213 cups_lang_t *language; /* Default language info */
4214 cups_file_t *fp; /* Key/cert file */
4215 unsigned char buffer[8192]; /* Buffer for x509 data */
4216 size_t bytes; /* Number of bytes of data */
4217 unsigned char serial[4]; /* Serial number buffer */
4218 time_t curtime; /* Current time */
4219 int result; /* Result of GNU TLS calls */
4220
4221
4222 /*
4223 * Create the encryption key...
4224 */
4225
8ca02f3c 4226 cupsdLogMessage(CUPSD_LOG_INFO, "Generating SSL server key...");
4744bd90 4227
4228 gnutls_x509_privkey_init(&key);
4229 gnutls_x509_privkey_generate(key, GNUTLS_PK_RSA, 2048, 0);
4230
4231 /*
4232 * Save it...
4233 */
4234
4235 bytes = sizeof(buffer);
4236
4237 if ((result = gnutls_x509_privkey_export(key, GNUTLS_X509_FMT_PEM,
4238 buffer, &bytes)) < 0)
4239 {
8ca02f3c 4240 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to export SSL server key - %s",
4744bd90 4241 gnutls_strerror(result));
4242 gnutls_x509_privkey_deinit(key);
8ca02f3c 4243 return (0);
4744bd90 4244 }
4245 else if ((fp = cupsFileOpen(ServerKey, "w")) != NULL)
4246 {
4247 cupsFileWrite(fp, (char *)buffer, bytes);
4248 cupsFileClose(fp);
4249
8ca02f3c 4250 cupsdLogMessage(CUPSD_LOG_INFO, "Created SSL server key file \"%s\"...",
4744bd90 4251 ServerKey);
4252 }
4253 else
4254 {
4255 cupsdLogMessage(CUPSD_LOG_ERROR,
8ca02f3c 4256 "Unable to create SSL server key file \"%s\" - %s",
4744bd90 4257 ServerKey, strerror(errno));
4258 gnutls_x509_privkey_deinit(key);
8ca02f3c 4259 return (0);
4744bd90 4260 }
4261
4262 /*
4263 * Create the self-signed certificate...
4264 */
4265
8ca02f3c 4266 cupsdLogMessage(CUPSD_LOG_INFO, "Generating self-signed SSL certificate...");
4744bd90 4267
4268 language = cupsLangDefault();
4269 curtime = time(NULL);
4270 serial[0] = curtime >> 24;
4271 serial[1] = curtime >> 16;
4272 serial[2] = curtime >> 8;
4273 serial[3] = curtime;
4274
4275 gnutls_x509_crt_init(&crt);
4276 if (strlen(language->language) == 5)
4277 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
4278 language->language + 3, 2);
4279 else
4280 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
4281 "US", 2);
4282 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COMMON_NAME, 0,
4283 ServerName, strlen(ServerName));
4284 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
4285 ServerName, strlen(ServerName));
4286 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME,
4287 0, "Unknown", 7);
4288 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0,
4289 "Unknown", 7);
4290 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_LOCALITY_NAME, 0,
4291 "Unknown", 7);
4292 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_PKCS9_EMAIL, 0,
4293 ServerAdmin, strlen(ServerAdmin));
4294 gnutls_x509_crt_set_key(crt, key);
4295 gnutls_x509_crt_set_serial(crt, serial, sizeof(serial));
4296 gnutls_x509_crt_set_activation_time(crt, curtime);
4297 gnutls_x509_crt_set_expiration_time(crt, curtime + 10 * 365 * 86400);
4298 gnutls_x509_crt_set_ca_status(crt, 0);
4299 gnutls_x509_crt_set_subject_alternative_name(crt, GNUTLS_SAN_DNSNAME,
4300 ServerName);
4301 gnutls_x509_crt_set_key_purpose_oid(crt, GNUTLS_KP_TLS_WWW_SERVER, 0);
4302 gnutls_x509_crt_set_key_usage(crt, GNUTLS_KEY_KEY_ENCIPHERMENT);
4303 gnutls_x509_crt_set_version(crt, 3);
4304
4305 bytes = sizeof(buffer);
4306 if (gnutls_x509_crt_get_key_id(crt, 0, buffer, &bytes) >= 0)
4307 gnutls_x509_crt_set_subject_key_id(crt, buffer, bytes);
4308
4309 gnutls_x509_crt_sign(crt, crt, key);
4310
4311 /*
4312 * Save it...
4313 */
4314
4315 bytes = sizeof(buffer);
4316 if ((result = gnutls_x509_crt_export(crt, GNUTLS_X509_FMT_PEM,
4317 buffer, &bytes)) < 0)
4318 cupsdLogMessage(CUPSD_LOG_ERROR,
8ca02f3c 4319 "Unable to export SSL server certificate - %s",
4744bd90 4320 gnutls_strerror(result));
4321 else if ((fp = cupsFileOpen(ServerCertificate, "w")) != NULL)
4322 {
4323 cupsFileWrite(fp, (char *)buffer, bytes);
4324 cupsFileClose(fp);
4325
4326 cupsdLogMessage(CUPSD_LOG_INFO,
8ca02f3c 4327 "Created SSL server certificate file \"%s\"...",
4744bd90 4328 ServerCertificate);
4329 }
4330 else
4331 cupsdLogMessage(CUPSD_LOG_ERROR,
8ca02f3c 4332 "Unable to create SSL server certificate file \"%s\" - %s",
4744bd90 4333 ServerCertificate, strerror(errno));
4334
4335 /*
4336 * Cleanup...
4337 */
4338
4339 gnutls_x509_crt_deinit(crt);
4340 gnutls_x509_privkey_deinit(key);
8ca02f3c 4341
4342 return (1);
4343
4344#elif defined(HAVE_CDSASSL) && defined(HAVE_WAITPID)
b86bc4cf 4345 int pid, /* Process ID of command */
4346 status; /* Status of command */
4347 char command[1024], /* Command */
4348 *argv[4], /* Command-line arguments */
4349 *envp[MAX_ENV + 1], /* Environment variables */
4350 keychain[1024], /* Keychain argument */
4351 infofile[1024]; /* Type-in information for cert */
4352 cups_file_t *fp; /* Seed/info file */
4353 int infofd; /* Info file descriptor */
8ca02f3c 4354
4355
4356 /*
b86bc4cf 4357 * Run the "certtool" command to generate a self-signed certificate...
8ca02f3c 4358 */
4359
4360 if (!cupsFileFind("certtool", getenv("PATH"), 1, command, sizeof(command)))
4361 {
4362 cupsdLogMessage(CUPSD_LOG_ERROR,
4363 "No SSL certificate and certtool command not found!");
4364 return (0);
4365 }
4366
b86bc4cf 4367 /*
4368 * Create a file with the certificate information fields...
4369 *
4370 * Note: This assumes that the default questions are asked by the certtool
4371 * command...
4372 */
4373
4374 if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
4375 {
4376 cupsdLogMessage(CUPSD_LOG_ERROR,
4377 "Unable to create certificate information file %s - %s",
4378 infofile, strerror(errno));
4379 return (0);
4380 }
4381
4382 cupsFilePrintf(fp, "%s\nr\n\ny\nb\ns\ny\n%s\n\n\n\n\n%s\ny\n",
4383 con->servername, con->servername, ServerAdmin);
4384 cupsFileClose(fp);
4385
8ca02f3c 4386 cupsdLogMessage(CUPSD_LOG_INFO,
4387 "Generating SSL server key and certificate...");
4388
4389 snprintf(keychain, sizeof(keychain), "k=%s", ServerCertificate);
4390
4391 argv[0] = "certtool";
4392 argv[1] = "c";
b86bc4cf 4393 argv[2] = keychain;
4394 argv[3] = NULL;
8ca02f3c 4395
4396 cupsdLoadEnv(envp, MAX_ENV);
4397
b86bc4cf 4398 infofd = open(infofile, O_RDONLY);
4399
a4924f6c
MS		 4400 if (!cupsdStartProcess(command, argv, envp, infofd, -1, -1, -1, -1, 1, NULL,
4401 &pid))
b86bc4cf 4402 {
4403 close(infofd);
4404 unlink(infofile);
8ca02f3c 4405 return (0);
b86bc4cf 4406 }
4407
4408 close(infofd);
4409 unlink(infofile);
8ca02f3c 4410
4411 while (waitpid(pid, &status, 0) < 0)
4412 if (errno != EINTR)
4413 {
4414 status = 1;
4415 break;
4416 }
4417
4418 cupsdFinishProcess(pid, command, sizeof(command));
4419
4420 if (status)
4421 {
4422 if (WIFEXITED(status))
4423 cupsdLogMessage(CUPSD_LOG_ERROR,
4424 "Unable to create SSL server key and certificate - "
4425 "the certtool command stopped with status %d!",
4426 WEXITSTATUS(status));
4427 else
4428 cupsdLogMessage(CUPSD_LOG_ERROR,
4429 "Unable to create SSL server key and certificate - "
4430 "the certtool command crashed on signal %d!",
4431 WTERMSIG(status));
4432 }
4433 else
4434 {
4435 cupsdLogMessage(CUPSD_LOG_INFO,
4436 "Created SSL server certificate file \"%s\"...",
4437 ServerCertificate);
4438 }
4439
4440 return (!status);
4441
4442#else
4443 return (0);
4444#endif /* HAVE_LIBSSL && HAVE_WAITPID */
4744bd90 4445}
8ca02f3c 4446#endif /* HAVE_SSL */
4744bd90 4447
4448
ef416fc2 4449/*
4450 * 'pipe_command()' - Pipe the output of a command to the remote client.
4451 */
4452
4453static int /* O - Process ID */
4454pipe_command(cupsd_client_t *con, /* I - Client connection */
4455 int infile, /* I - Standard input for command */
4456 int *outfile, /* O - Standard output for command */
4457 char *command, /* I - Command to run */
4458 char *options, /* I - Options for command */
4459 int root) /* I - Run as root? */
4460{
4461 int i; /* Looping var */
4462 int pid; /* Process ID */
b423cd4c 4463 char *commptr, /* Command string pointer */
4464 commch; /* Command string character */
ef416fc2 4465 char *uriptr; /* URI string pointer */
4466 int fds[2]; /* Pipe FDs */
4467 int argc; /* Number of arguments */
4468 int envc; /* Number of environment variables */
4469 char argbuf[10240], /* Argument buffer */
4470 *argv[100], /* Argument strings */
b94498cf 4471 *envp[MAX_ENV + 20]; /* Environment variables */
5bd77a73 4472 char auth_type[256], /* CUPSD_AUTH_TYPE environment variable */
b94498cf 4473 content_length[1024], /* CONTENT_LENGTH environment variable */
ef416fc2 4474 content_type[1024], /* CONTENT_TYPE environment variable */
4475 http_cookie[32768], /* HTTP_COOKIE environment variable */
f7deaa1a 4476 http_referer[1024], /* HTTP_REFERER environment variable */
ef416fc2 4477 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
4478 lang[1024], /* LANG environment variable */
b423cd4c 4479 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 4480 remote_addr[1024], /* REMOTE_ADDR environment variable */
4481 remote_host[1024], /* REMOTE_HOST environment variable */
4482 remote_user[1024], /* REMOTE_USER environment variable */
b94498cf 4483 script_filename[1024], /* SCRIPT_FILENAME environment variable */
ef416fc2 4484 script_name[1024], /* SCRIPT_NAME environment variable */
4485 server_name[1024], /* SERVER_NAME environment variable */
4486 server_port[1024]; /* SERVER_PORT environment variable */
7dfedb92 4487 ipp_attribute_t *attr; /* attributes-natural-language attribute */
5bd77a73
MS		 4488#ifdef HAVE_GSSAPI
4489 krb5_ccache ccache = NULL; /* Kerberos credentials */
e6013cfa 4490# if defined(HAVE_KRB5_CC_NEW_UNIQUE) || defined(HAVE_HEIMDAL)
5bd77a73 4491 char krb5ccname[1024]; /* KRB5CCNAME environment variable */
e6013cfa 4492# endif /* HAVE_KRB5_CC_NEW_UNIQUE || HAVE_HEIMDAL */
5bd77a73 4493#endif /* HAVE_GSSAPI */
ef416fc2 4494
4495
4496 /*
4497 * Parse a copy of the options string, which is of the form:
4498 *
b423cd4c 4499 * argument+argument+argument
4500 * ?argument+argument+argument
4501 * param=value&param=value
4502 * ?param=value&param=value
4503 * /name?argument+argument+argument
4504 * /name?param=value&param=value
ef416fc2 4505 *
4506 * If the string contains an "=" character after the initial name,
4507 * then we treat it as a HTTP GET form request and make a copy of
4508 * the remaining string for the environment variable.
4509 *
4510 * The string is always parsed out as command-line arguments, to
4511 * be consistent with Apache...
4512 */
4513
4514 cupsdLogMessage(CUPSD_LOG_DEBUG2,
4515 "pipe_command: command=\"%s\", options=\"%s\"",
f301802f 4516 command, options ? options : "(null)");
ef416fc2 4517
b86bc4cf 4518 argv[0] = command;
ef416fc2 4519
b423cd4c 4520 if (options)
4521 strlcpy(argbuf, options, sizeof(argbuf));
4522 else
4523 argbuf[0] = '\0';
4524
4525 if (argbuf[0] == '/')
ef416fc2 4526 {
4527 /*
b423cd4c 4528 * Found some trailing path information, set PATH_INFO...
ef416fc2 4529 */
4530
b423cd4c 4531 if ((commptr = strchr(argbuf, '?')) == NULL)
4532 commptr = argbuf + strlen(argbuf);
ef416fc2 4533
b423cd4c 4534 commch = *commptr;
4535 *commptr = '\0';
4536 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
4537 *commptr = commch;
4538 }
4539 else
4540 {
4541 commptr = argbuf;
4542 path_info[0] = '\0';
b94498cf 4543
4544 if (*commptr == ' ')
4545 commptr ++;
b423cd4c 4546 }
ef416fc2 4547
b86bc4cf 4548 if (*commptr == '?' && con->operation == HTTP_GET && !con->query_string)
b423cd4c 4549 {
4550 commptr ++;
b86bc4cf 4551 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr);
b423cd4c 4552 }
ef416fc2 4553
b423cd4c 4554 argc = 1;
ef416fc2 4555
b423cd4c 4556 if (*commptr)
4557 {
4558 argv[argc ++] = commptr;
ef416fc2 4559
b423cd4c 4560 for (; *commptr && argc < 99; commptr ++)
4561 {
ef416fc2 4562 /*
b423cd4c 4563 * Break arguments whenever we see a + or space...
ef416fc2 4564 */
4565
b423cd4c 4566 if (*commptr == ' ' || *commptr == '+')
4567 {
4568 while (*commptr == ' ' || *commptr == '+')
4569 *commptr++ = '\0';
ef416fc2 4570
b423cd4c 4571 /*
4572 * If we don't have a blank string, save it as another argument...
4573 */
ef416fc2 4574
b423cd4c 4575 if (*commptr)
4576 {
4577 argv[argc] = commptr;
4578 argc ++;
4579 }
4580 else
4581 break;
4582 }
4583 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
4584 isxdigit(commptr[2] & 255))
4585 {
4586 /*
4587 * Convert the %xx notation to the individual character.
4588 */
ef416fc2 4589
b423cd4c 4590 if (commptr[1] >= '0' && commptr[1] <= '9')
4591 *commptr = (commptr[1] - '0') << 4;
4592 else
4593 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
ef416fc2 4594
b423cd4c 4595 if (commptr[2] >= '0' && commptr[2] <= '9')
4596 *commptr |= commptr[2] - '0';
4597 else
4598 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 4599
b423cd4c 4600 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 4601
b423cd4c 4602 /*
4603 * Check for a %00 and break if that is the case...
4604 */
ef416fc2 4605
b423cd4c 4606 if (!*commptr)
4607 break;
4608 }
ef416fc2 4609 }
4610 }
4611
4612 argv[argc] = NULL;
4613
ef416fc2 4614 /*
4615 * Setup the environment variables as needed...
4616 */
4617
b94498cf 4618 if (con->username[0])
4619 {
5bd77a73 4620 snprintf(auth_type, sizeof(auth_type), "CUPSD_AUTH_TYPE=%s",
b94498cf 4621 httpGetField(HTTP(con), HTTP_FIELD_AUTHORIZATION));
4622
4623 if ((uriptr = strchr(auth_type + 10, ' ')) != NULL)
4624 *uriptr = '\0';
4625 }
4626 else
4627 auth_type[0] = '\0';
4628
7dfedb92
MS		 4629 if (con->request &&
4630 (attr = ippFindAttribute(con->request, "attributes-natural-language",
4631 IPP_TAG_LANGUAGE)) != NULL)
4632 {
4633 switch (strlen(attr->values[0].string.text))
4634 {
4635 default :
4636 /*
4637 * This is an unknown or badly formatted language code; use
4638 * the POSIX locale...
4639 */
4640
4641 strcpy(lang, "LANG=C");
4642 break;
4643
4644 case 2 :
4645 /*
4646 * Just the language code (ll)...
4647 */
4648
4649 snprintf(lang, sizeof(lang), "LANG=%s.UTF8",
4650 attr->values[0].string.text);
4651 break;
4652
4653 case 5 :
4654 /*
4655 * Language and country code (ll-cc)...
4656 */
4657
4658 snprintf(lang, sizeof(lang), "LANG=%c%c_%c%c.UTF8",
4659 attr->values[0].string.text[0],
4660 attr->values[0].string.text[1],
4661 toupper(attr->values[0].string.text[3] & 255),
4662 toupper(attr->values[0].string.text[4] & 255));
4663 break;
4664 }
4665 }
4666 else if (con->language)
4667 snprintf(lang, sizeof(lang), "LANG=%s.UTF8", con->language->language);
ef416fc2 4668 else
4669 strcpy(lang, "LANG=C");
4670
4671 strcpy(remote_addr, "REMOTE_ADDR=");
4672 httpAddrString(con->http.hostaddr, remote_addr + 12,
4673 sizeof(remote_addr) - 12);
4674
4675 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
4676 con->http.hostname);
4677
4678 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
4679 if ((uriptr = strchr(script_name, '?')) != NULL)
4680 *uriptr = '\0';
4681
b94498cf 4682 snprintf(script_filename, sizeof(script_filename), "SCRIPT_FILENAME=%s%s",
4683 DocumentRoot, script_name + 12);
4684
ef416fc2 4685 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
4686
4687 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
4688 con->servername);
4689
4690 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
4691
b94498cf 4692 if (auth_type[0])
4693 envp[envc ++] = auth_type;
4694
ef416fc2 4695 envp[envc ++] = lang;
4696 envp[envc ++] = "REDIRECT_STATUS=1";
b94498cf 4697 envp[envc ++] = "GATEWAY_INTERFACE=CGI/1.1";
ef416fc2 4698 envp[envc ++] = server_name;
4699 envp[envc ++] = server_port;
4700 envp[envc ++] = remote_addr;
4701 envp[envc ++] = remote_host;
4702 envp[envc ++] = script_name;
b94498cf 4703 envp[envc ++] = script_filename;
ef416fc2 4704
b423cd4c 4705 if (path_info[0])
4706 envp[envc ++] = path_info;
4707
ef416fc2 4708 if (con->username[0])
4709 {
4710 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
4711
4712 envp[envc ++] = remote_user;
5bd77a73
MS		 4713
4714 /*
4715 * Save Kerberos credentials, if any...
4716 */
4717
4718#ifdef HAVE_GSSAPI
4719 if (con->gss_have_creds)
4720 {
4721# if !defined(HAVE_KRB5_CC_NEW_UNIQUE) && !defined(HAVE_HEIMDAL)
4722 cupsdLogMessage(CUPSD_LOG_INFO,
4723 "Sorry, your version of Kerberos does not support "
4724 "delegated credentials!");
4725
4726# else
4727 krb5_error_code error; /* Kerberos error code */
4728 OM_uint32 major_status, /* Major status code */
4729 minor_status; /* Minor status code */
4730 krb5_principal principal; /* Kerberos principal */
4731
4732
4733# ifdef __APPLE__
4734 /*
4735 * If the weak-linked GSSAPI/Kerberos library is not present, don't try
4736 * to use it...
4737 */
4738
4739 if (krb5_init_context != NULL)
4740 {
4741# endif /* __APPLE__ */
4742
0af14961
MS		 4743 if (!KerberosInitialized)
4744 {
4745 /*
4746 * Setup a Kerberos context for the scheduler to use...
4747 */
4748
4749 KerberosInitialized = 1;
4750
4751 if (krb5_init_context(&KerberosContext))
4752 {
4753 KerberosContext = NULL;
4754
4755 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to initialize Kerberos context");
4756 }
4757 }
4758
5bd77a73
MS		 4759 /*
4760 * We MUST create a file-based cache because memory-based caches are
4761 * only valid for the current process/address space.
4762 *
4763 * Due to various bugs/features in different versions of Kerberos, we
4764 * need either the krb5_cc_new_unique() function or Heimdal's version
4765 * of krb5_cc_gen_new() to create a new FILE: credential cache that
4766 * can be passed to the backend. These functions create a temporary
4767 * file (typically in /tmp) containing the cached credentials, which
4768 * are removed when we have successfully printed a job.
4769 */
4770
0af14961
MS		 4771 if (KerberosContext)
4772 {
5bd77a73 4773# ifdef HAVE_KRB5_CC_NEW_UNIQUE
0af14961
MS		 4774 if ((error = krb5_cc_new_unique(KerberosContext, "FILE", NULL,
4775 &ccache)) != 0)
5bd77a73 4776# else /* HAVE_HEIMDAL */
0af14961
MS		 4777 if ((error = krb5_cc_gen_new(KerberosContext, &krb5_fcc_ops,
4778 &ccache)) != 0)
5bd77a73 4779# endif /* HAVE_KRB5_CC_NEW_UNIQUE */
5bd77a73 4780 {
0af14961
MS		 4781 cupsdLogMessage(CUPSD_LOG_ERROR,
4782 "Unable to create new credentials cache (%d/%s)",
4783 error, strerror(errno));
4784 ccache = NULL;
4785 }
4786 else if ((error = krb5_parse_name(KerberosContext, con->username,
4787 &principal)) != 0)
4788 {
4789 cupsdLogMessage(CUPSD_LOG_ERROR,
4790 "Unable to parse kerberos username (%d/%s)", error,
4791 strerror(errno));
4792 krb5_cc_destroy(KerberosContext, ccache);
4793 ccache = NULL;
4794 }
4795 else if ((error = krb5_cc_initialize(KerberosContext, ccache,
4796 principal)))
4797 {
4798 cupsdLogMessage(CUPSD_LOG_ERROR,
4799 "Unable to initialize credentials cache (%d/%s)", error,
4800 strerror(errno));
5bd77a73 4801 krb5_cc_destroy(KerberosContext, ccache);
0af14961 4802 krb5_free_principal(KerberosContext, principal);
5bd77a73
MS		 4803 ccache = NULL;
4804 }
4805 else
4806 {
0af14961
MS		 4807 krb5_free_principal(KerberosContext, principal);
4808
5bd77a73 4809 /*
0af14961 4810 * Copy the user's credentials to the new cache file...
5bd77a73
MS		 4811 */
4812
0af14961
MS		 4813 major_status = gss_krb5_copy_ccache(&minor_status,
4814 con->gss_delegated_cred, ccache);
5bd77a73 4815
0af14961
MS		 4816 if (GSS_ERROR(major_status))
4817 {
4818 cupsdLogGSSMessage(CUPSD_LOG_ERROR, major_status, minor_status,
4819 "Unable to import client credentials cache");
4820 krb5_cc_destroy(KerberosContext, ccache);
4821 ccache = NULL;
4822 }
4823 else
4824 {
4825 /*
4826 * Add the KRB5CCNAME environment variable to the job so that the
4827 * backend can use the credentials when printing.
4828 */
4829
4830 snprintf(krb5ccname, sizeof(krb5ccname), "KRB5CCNAME=FILE:%s",
4831 krb5_cc_get_name(KerberosContext, ccache));
4832 envp[envc++] = krb5ccname;
4833
4834 if (!RunUser)
4835 chown(krb5_cc_get_name(KerberosContext, ccache), User, Group);
4836 }
4837 }
5bd77a73
MS		 4838 }
4839# ifdef __APPLE__
4840 }
4841# endif /* __APPLE__ */
4842# endif /* HAVE_KRB5_CC_NEW_UNIQUE || HAVE_HEIMDAL */
4843 }
4844#endif /* HAVE_GSSAPI */
ef416fc2 4845 }
4846
4847 if (con->http.version == HTTP_1_1)
4848 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
4849 else if (con->http.version == HTTP_1_0)
4850 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
4851 else
4852 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
4853
4854 if (con->http.cookie)
4855 {
4856 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
4857 con->http.cookie);
4858 envp[envc ++] = http_cookie;
4859 }
4860
4861 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
4862 {
4863 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
4864 con->http.fields[HTTP_FIELD_USER_AGENT]);
4865 envp[envc ++] = http_user_agent;
4866 }
4867
f7deaa1a 4868 if (con->http.fields[HTTP_FIELD_REFERER][0])
4869 {
4870 snprintf(http_referer, sizeof(http_referer), "HTTP_REFERER=%s",
4871 con->http.fields[HTTP_FIELD_REFERER]);
4872 envp[envc ++] = http_referer;
4873 }
4874
ef416fc2 4875 if (con->operation == HTTP_GET)
4876 {
ef416fc2 4877 envp[envc ++] = "REQUEST_METHOD=GET";
4878
b86bc4cf 4879 if (con->query_string)
ef416fc2 4880 {
4881 /*
4882 * Add GET form variables after ?...
4883 */
4884
b86bc4cf 4885 envp[envc ++] = con->query_string;
ef416fc2 4886 }
3dfe78b3
MS		 4887 else
4888 envp[envc ++] = "QUERY_STRING=";
ef416fc2 4889 }
4890 else
4891 {
e1d6a774 4892 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
4893 CUPS_LLCAST con->bytes);
ef416fc2 4894 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
4895 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
4896
4897 envp[envc ++] = "REQUEST_METHOD=POST";
4898 envp[envc ++] = content_length;
4899 envp[envc ++] = content_type;
4900 }
4901
4902 /*
4903 * Tell the CGI if we are using encryption...
4904 */
4905
a74454a7 4906 if (con->http.tls)
ef416fc2 4907 envp[envc ++] = "HTTPS=ON";
4908
4909 /*
4910 * Terminate the environment array...
4911 */
4912
4913 envp[envc] = NULL;
4914
4915 if (LogLevel == CUPSD_LOG_DEBUG2)
4916 {
4917 for (i = 0; i < argc; i ++)
4918 cupsdLogMessage(CUPSD_LOG_DEBUG2,
4919 "pipe_command: argv[%d] = \"%s\"", i, argv[i]);
4920 for (i = 0; i < envc; i ++)
4921 cupsdLogMessage(CUPSD_LOG_DEBUG2,
4922 "pipe_command: envp[%d] = \"%s\"", i, envp[i]);
4923 }
4924
4925 /*
4926 * Create a pipe for the output...
4927 */
4928
4929 if (cupsdOpenPipe(fds))
4930 {
ef416fc2 4931 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create pipes for CGI %s - %s",
4932 argv[0], strerror(errno));
4933 return (0);
4934 }
4935
4936 /*
4937 * Then execute the command...
4938 */
4939
4940 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
a4924f6c 4941 -1, -1, root, DefaultProfile, &pid) < 0)
ef416fc2 4942 {
4943 /*
4944 * Error - can't fork!
4945 */
4946
4947 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to fork for CGI %s - %s", argv[0],
4948 strerror(errno));
4949
4950 cupsdClosePipe(fds);
4951 pid = 0;
4952 }
4953 else
4954 {
4955 /*
4956 * Fork successful - return the PID...
4957 */
4958
4959 if (con->username[0])
5bd77a73
MS		 4960#ifdef HAVE_GSSAPI
4961 cupsdAddCert(pid, con->username, ccache);
4962#else
4963 cupsdAddCert(pid, con->username, NULL);
4964#endif /* HAVE_GSSAPI */
ef416fc2 4965
355e94dc
MS		 4966 cupsdLogMessage(CUPSD_LOG_DEBUG, "[CGI] %s started - PID = %d",
4967 command, pid);
ef416fc2 4968
4969 *outfile = fds[0];
4970 close(fds[1]);
4971 }
4972
ef416fc2 4973 return (pid);
4974}
4975
4976
4977/*
a74454a7 4978 * 'write_file()' - Send a file via HTTP.
e1d6a774 4979 */
4980
4981static int /* O - 0 on failure, 1 on success */
a74454a7 4982write_file(cupsd_client_t *con, /* I - Client connection */
4983 http_status_t code, /* I - HTTP status */
4984 char *filename, /* I - Filename */
4985 char *type, /* I - File type */
4986 struct stat *filestats) /* O - File information */
e1d6a774 4987{
4988 con->file = open(filename, O_RDONLY);
4989
355e94dc 4990 cupsdLogMessage(CUPSD_LOG_DEBUG2, "write_file: %d file=%d", con->http.fd,
e1d6a774 4991 con->file);
4992
4993 if (con->file < 0)
4994 return (0);
4995
4996 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
4997
4998 con->pipe_pid = 0;
4999
5bd77a73 5000 if (!cupsdSendHeader(con, code, type, CUPSD_AUTH_NONE))
e1d6a774 5001 return (0);
5002
5003 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
5004 httpGetDateString(filestats->st_mtime)) < 0)
5005 return (0);
5006 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
5007 CUPS_LLCAST filestats->st_size) < 0)
5008 return (0);
5009 if (httpPrintf(HTTP(con), "\r\n") < 0)
5010 return (0);
5011
07725fee 5012 if (cupsdFlushHeader(con) < 0)
5013 return (0);
d09495fa 5014
e1d6a774 5015 con->http.data_encoding = HTTP_ENCODE_LENGTH;
5016 con->http.data_remaining = filestats->st_size;
5017
5018 if (con->http.data_remaining <= INT_MAX)
5019 con->http._data_remaining = con->http.data_remaining;
5020 else
5021 con->http._data_remaining = INT_MAX;
5022
f7deaa1a 5023 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient,
5024 (cupsd_selfunc_t)cupsdWriteClient, con);
e1d6a774 5025
5026 return (1);
5027}
5028
5029
5030/*
f899b121 5031 * 'write_pipe()' - Flag that data is available on the CGI pipe.
5032 */
5033
5034static void
5035write_pipe(cupsd_client_t *con) /* I - Client connection */
5036{
5037 cupsdLogMessage(CUPSD_LOG_DEBUG2, "write_pipe: CGI output on fd %d...",
5038 con->file);
5039
5040 con->file_ready = 1;
5041
5042 cupsdRemoveSelect(con->file);
5043 cupsdAddSelect(con->http.fd, NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
5044}
5045
5046
5047/*
b19ccc9e 5048 * End of "$Id: client.c 7950 2008-09-17 00:21:59Z mike $".
ef416fc2 5049 */
Unnamed repository; edit this file 'description' to name the repository.