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Merge changes from CUPS 1.4svn-r8454.
[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,
b9faaae1 140 "cupsdAcceptClient(lis=%p(%d)) Clients=%d",
bd7854cb 141 lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 142
143 /*
144 * Make sure we don't have a full set of clients already...
145 */
146
bd7854cb 147 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 148 return;
149
150 /*
151 * Get a pointer to the next available client...
152 */
153
bd7854cb 154 if (!Clients)
155 Clients = cupsArrayNew(NULL, NULL);
156
157 if (!Clients)
91c84a35
MS		 158 {
159 cupsdLogMessage(CUPSD_LOG_ERROR,
3dfe78b3
MS		 160 "Unable to allocate memory for clients array!");
161 cupsdPauseListening();
162 return;
163 }
164
165 if (!ActiveClients)
166 ActiveClients = cupsArrayNew((cups_array_func_t)compare_clients, NULL);
167
168 if (!ActiveClients)
169 {
170 cupsdLogMessage(CUPSD_LOG_ERROR,
171 "Unable to allocate memory for active clients array!");
91c84a35 172 cupsdPauseListening();
bd7854cb 173 return;
91c84a35 174 }
bd7854cb 175
91c84a35
MS		 176 if ((con = calloc(1, sizeof(cupsd_client_t))) == NULL)
177 {
178 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to allocate memory for client!");
179 cupsdPauseListening();
180 return;
181 }
ef416fc2 182
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
ef416fc2 303#ifdef WIN32
304 closesocket(con->http.fd);
305#else
306 close(con->http.fd);
307#endif /* WIN32 */
308
309 cupsdLogMessage(CUPSD_LOG_WARN,
310 "Name lookup failed - connection from %s closed!",
311 con->http.hostname);
bd7854cb 312
313 free(con);
ef416fc2 314 return;
315 }
316
317 if (HostNameLookups == 2)
318 {
319 /*
320 * Do double lookups as needed...
321 */
322
749b1e90
MS		 323 if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL))
324 != NULL)
ef416fc2 325 {
326 /*
327 * See if the hostname maps to the same IP address...
328 */
329
330 for (addr = addrlist; addr; addr = addr->next)
331 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
332 break;
333 }
334 else
335 addr = NULL;
336
337 httpAddrFreeList(addrlist);
338
339 if (!addr)
340 {
341 /*
342 * Can't have a hostname that doesn't resolve to the same IP address
343 * with double-lookups enabled...
344 */
345
ef416fc2 346#ifdef WIN32
347 closesocket(con->http.fd);
348#else
349 close(con->http.fd);
350#endif /* WIN32 */
351
352 cupsdLogMessage(CUPSD_LOG_WARN,
353 "IP lookup failed - connection from %s closed!",
354 con->http.hostname);
bd7854cb 355 free(con);
ef416fc2 356 return;
357 }
358 }
359
749b1e90
MS		 360#ifdef HAVE_TCPD_H
361 /*
362 * See if the connection is denied by TCP wrappers...
363 */
364
365 request_init(&wrap_req, RQ_DAEMON, "cupsd", RQ_FILE, con->http.fd, NULL);
366 fromhost(&wrap_req);
367
368 if (!hosts_access(&wrap_req))
369 {
749b1e90
MS		 370#ifdef WIN32
371 closesocket(con->http.fd);
372#else
373 close(con->http.fd);
374#endif /* WIN32 */
375
376 cupsdLogMessage(CUPSD_LOG_WARN,
377 "Connection from %s refused by /etc/hosts.allow and "
378 "/etc/hosts.deny rules.", con->http.hostname);
379 free(con);
380 return;
381 }
382#endif /* HAVE_TCPD_H */
383
ef416fc2 384#ifdef AF_INET6
385 if (con->http.hostaddr->addr.sa_family == AF_INET6)
386 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv6)",
387 con->http.fd, con->http.hostname,
388 ntohs(con->http.hostaddr->ipv6.sin6_port));
389 else
390#endif /* AF_INET6 */
391#ifdef AF_LOCAL
392 if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
393 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s (Domain)",
394 con->http.fd, con->http.hostname);
395 else
396#endif /* AF_LOCAL */
397 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv4)",
398 con->http.fd, con->http.hostname,
399 ntohs(con->http.hostaddr->ipv4.sin_port));
400
401 /*
402 * Get the local address the client connected to...
403 */
404
405 addrlen = sizeof(temp);
406 if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
407 {
408 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
409 strerror(errno));
410
411 strcpy(con->servername, "localhost");
412 con->serverport = LocalPort;
413 }
414 else
415 {
416#ifdef AF_INET6
417 if (temp.addr.sa_family == AF_INET6)
418 {
b19ccc9e
MS		 419 if (HostNameLookups)
420 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
0af14961
MS		 421 else if (httpAddrLocalhost(&temp))
422 strlcpy(con->servername, "localhost", sizeof(con->servername));
b19ccc9e
MS		 423 else
424 httpAddrString(&temp, con->servername, sizeof(con->servername));
425
ef416fc2 426 con->serverport = ntohs(lis->address.ipv6.sin6_port);
427 }
428 else
429#endif /* AF_INET6 */
430 if (temp.addr.sa_family == AF_INET)
431 {
b19ccc9e
MS		 432 if (HostNameLookups)
433 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
0af14961
MS		 434 else if (httpAddrLocalhost(&temp))
435 strlcpy(con->servername, "localhost", sizeof(con->servername));
b19ccc9e
MS		 436 else
437 httpAddrString(&temp, con->servername, sizeof(con->servername));
438
ef416fc2 439 con->serverport = ntohs(lis->address.ipv4.sin_port);
440 }
441 else
442 {
443 strcpy(con->servername, "localhost");
444 con->serverport = LocalPort;
445 }
446 }
447
bd7854cb 448 cupsArrayAdd(Clients, con);
449
ef416fc2 450 /*
b9faaae1
MS		 451 * Using TCP_NODELAY improves responsiveness, especially on systems with a slow
452 * loopback interface. Since we write large buffers when sending print files
453 * and requests there shouldn't be any performance penalty for this...
ef416fc2 454 */
455
456 val = 1;
f7deaa1a 457 setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
ef416fc2 458
459 /*
460 * Close this file on all execs...
461 */
462
463 fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
464
465 /*
b9faaae1 466 * Add the socket to the server select.
ef416fc2 467 */
468
f7deaa1a 469 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 470
ef416fc2 471 /*
472 * Temporarily suspend accept()'s until we lose a client...
473 */
474
bd7854cb 475 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 476 cupsdPauseListening();
477
478#ifdef HAVE_SSL
479 /*
480 * See if we are connecting on a secure port...
481 */
482
483 if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
484 {
485 /*
486 * https connection; go secure...
487 */
488
489 con->http.encryption = HTTP_ENCRYPT_ALWAYS;
490
411affcf 491 if (!encrypt_client(con))
492 cupsdCloseClient(con);
ef416fc2 493 }
494 else
495 con->auto_ssl = 1;
496#endif /* HAVE_SSL */
497}
498
499
500/*
501 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
502 */
503
504void
505cupsdCloseAllClients(void)
506{
bd7854cb 507 cupsd_client_t *con; /* Current client */
508
509
b9faaae1
MS		 510 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdCloseAllClients() Clients=%d",
511 cupsArrayCount(Clients));
512
bd7854cb 513 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
514 con;
515 con = (cupsd_client_t *)cupsArrayNext(Clients))
49d87452
MS		 516 if (cupsdCloseClient(con))
517 cupsdCloseClient(con);
ef416fc2 518}
519
520
521/*
522 * 'cupsdCloseClient()' - Close a remote client.
523 */
524
525int /* O - 1 if partial close, 0 if fully closed */
526cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
527{
528 int partial; /* Do partial close for SSL? */
529#ifdef HAVE_LIBSSL
530 SSL_CTX *context; /* Context for encryption */
531 SSL *conn; /* Connection for encryption */
532 unsigned long error; /* Error code */
533#elif defined(HAVE_GNUTLS)
89d46774 534 http_tls_t *conn; /* TLS connection information */
535 int error; /* Error code */
ef416fc2 536 gnutls_certificate_server_credentials *credentials;
537 /* TLS credentials */
89d46774 538# elif defined(HAVE_CDSASSL)
539 http_tls_t *conn; /* CDSA connection information */
ef416fc2 540#endif /* HAVE_LIBSSL */
541
542
b9faaae1
MS		 543 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdCloseClient(con=%p(%d))", con,
544 con->http.fd);
ef416fc2 545
546 /*
547 * Flush pending writes before closing...
548 */
549
550 httpFlushWrite(HTTP(con));
551
552 partial = 0;
553
554#ifdef HAVE_SSL
555 /*
556 * Shutdown encryption as needed...
557 */
558
559 if (con->http.tls)
560 {
561 partial = 1;
562
563# ifdef HAVE_LIBSSL
564 conn = (SSL *)(con->http.tls);
565 context = SSL_get_SSL_CTX(conn);
566
567 switch (SSL_shutdown(conn))
568 {
569 case 1 :
c934a06c
MS		 570 cupsdLogMessage(CUPSD_LOG_DEBUG,
571 "SSL shutdown successful!");
ef416fc2 572 break;
573 case -1 :
574 cupsdLogMessage(CUPSD_LOG_ERROR,
c934a06c 575 "Fatal error during SSL shutdown!");
ef416fc2 576 default :
577 while ((error = ERR_get_error()) != 0)
c934a06c 578 cupsdLogMessage(CUPSD_LOG_ERROR, "SSL shutdown failed: %s",
ef416fc2 579 ERR_error_string(error, NULL));
580 break;
581 }
582
583 SSL_CTX_free(context);
584 SSL_free(conn);
585
586# elif defined(HAVE_GNUTLS)
587 conn = (http_tls_t *)(con->http.tls);
588 credentials = (gnutls_certificate_server_credentials *)(conn->credentials);
589
590 error = gnutls_bye(conn->session, GNUTLS_SHUT_WR);
591 switch (error)
592 {
593 case GNUTLS_E_SUCCESS:
c934a06c
MS		 594 cupsdLogMessage(CUPSD_LOG_DEBUG,
595 "SSL shutdown successful!");
ef416fc2 596 break;
597 default:
598 cupsdLogMessage(CUPSD_LOG_ERROR,
c934a06c 599 "SSL shutdown failed: %s", gnutls_strerror(error));
ef416fc2 600 break;
601 }
602
603 gnutls_deinit(conn->session);
604 gnutls_certificate_free_credentials(*credentials);
605 free(credentials);
606 free(conn);
607
608# elif defined(HAVE_CDSASSL)
89d46774 609 conn = (http_tls_t *)(con->http.tls);
610
611 while (SSLClose(conn->session) == errSSLWouldBlock)
b423cd4c 612 usleep(1000);
613
89d46774 614 SSLDisposeContext(conn->session);
615
616 if (conn->certsArray)
617 CFRelease(conn->certsArray);
618
619 free(conn);
ef416fc2 620# endif /* HAVE_LIBSSL */
621
622 con->http.tls = NULL;
623 }
624#endif /* HAVE_SSL */
625
626 if (con->pipe_pid != 0)
627 {
628 /*
629 * Stop any CGI process...
630 */
631
ef416fc2 632 cupsdEndProcess(con->pipe_pid, 1);
633 con->pipe_pid = 0;
634 }
635
636 if (con->file >= 0)
637 {
f7deaa1a 638 cupsdRemoveSelect(con->file);
ef416fc2 639
ef416fc2 640 close(con->file);
641 con->file = -1;
642 }
643
644 /*
645 * Close the socket and clear the file from the input set for select()...
646 */
647
3dfe78b3 648 if (con->http.fd >= 0)
ef416fc2 649 {
3dfe78b3
MS		 650 cupsArrayRemove(ActiveClients, con);
651 cupsdSetBusyState();
652
ef416fc2 653 if (partial)
654 {
655 /*
656 * Only do a partial close so that the encrypted client gets everything.
657 */
658
ef416fc2 659 shutdown(con->http.fd, 0);
f7deaa1a 660 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 661 }
662 else
663 {
664 /*
665 * Shut the socket down fully...
666 */
667
f7deaa1a 668 cupsdRemoveSelect(con->http.fd);
ef416fc2 669 close(con->http.fd);
ef416fc2 670 con->http.fd = -1;
671 }
672 }
673
674 if (!partial)
675 {
676 /*
677 * Free memory...
678 */
679
680 if (con->http.input_set)
681 free(con->http.input_set);
682
683 httpClearCookie(HTTP(con));
9f5eb9be 684 httpClearFields(HTTP(con));
ef416fc2 685
686 cupsdClearString(&con->filename);
687 cupsdClearString(&con->command);
688 cupsdClearString(&con->options);
b86bc4cf 689 cupsdClearString(&con->query_string);
ef416fc2 690
691 if (con->request)
692 {
693 ippDelete(con->request);
694 con->request = NULL;
695 }
696
697 if (con->response)
698 {
699 ippDelete(con->response);
700 con->response = NULL;
701 }
702
703 if (con->language)
704 {
705 cupsLangFree(con->language);
706 con->language = NULL;
707 }
708
f7deaa1a 709#ifdef HAVE_AUTHORIZATION_H
710 if (con->authref)
711 {
712 AuthorizationFree(con->authref, kAuthorizationFlagDefaults);
713 con->authref = NULL;
714 }
715#endif /* HAVE_AUTHORIZATION_H */
716
ef416fc2 717 /*
718 * Re-enable new client connections if we are going back under the
719 * limit...
720 */
721
bd7854cb 722 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 723 cupsdResumeListening();
724
725 /*
726 * Compact the list of clients as necessary...
727 */
728
bd7854cb 729 cupsArrayRemove(Clients, con);
ef416fc2 730
bd7854cb 731 free(con);
ef416fc2 732 }
733
734 return (partial);
735}
736
737
d09495fa 738/*
739 * 'cupsdFlushHeader()' - Flush the header fields to the client.
740 */
741
07725fee 742int /* I - Bytes written or -1 on error */
d09495fa 743cupsdFlushHeader(cupsd_client_t *con) /* I - Client to flush to */
744{
07725fee 745 int bytes = httpFlushWrite(HTTP(con));
d09495fa 746
747 con->http.data_encoding = HTTP_ENCODE_LENGTH;
07725fee 748
749 return (bytes);
d09495fa 750}
751
752
ef416fc2 753/*
754 * 'cupsdReadClient()' - Read data from a client.
755 */
756
f7deaa1a 757void
ef416fc2 758cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
759{
760 char line[32768], /* Line from client... */
761 operation[64], /* Operation code from socket */
762 version[64], /* HTTP version number string */
763 locale[64], /* Locale */
764 *ptr; /* Pointer into strings */
765 int major, minor; /* HTTP version numbers */
766 http_status_t status; /* Transfer status */
767 ipp_state_t ipp_state; /* State of IPP transfer */
768 int bytes; /* Number of bytes to POST */
769 char *filename; /* Name of file for GET/HEAD */
770 char buf[1024]; /* Buffer for real filename */
771 struct stat filestats; /* File information */
772 mime_type_t *type; /* MIME type of file */
773 cupsd_printer_t *p; /* Printer */
774 static unsigned request_id = 0; /* Request ID for temp files */
775
776
777 status = HTTP_CONTINUE;
778
779 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1
MS		 780 "cupsdReadClient(con=%p(%d)) "
781 "con->http.error=%d "
782 "con->http.used=%d, "
783 "con->http.state=%d "
784 "con->data_encoding=HTTP_ENCODE_%s, "
785 "con->data_remaining=" CUPS_LLFMT ", "
786 "con->file=%d",
787 con, con->http.fd, con->http.error, con->http.used,
788 con->http.state,
789 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
790 "CHUNKED" : "LENGTH",
791 CUPS_LLCAST con->http.data_remaining, con->file);
ef416fc2 792
793 if (con->http.error)
794 {
f7deaa1a 795 cupsdCloseClient(con);
796 return;
ef416fc2 797 }
798
799#ifdef HAVE_SSL
800 if (con->auto_ssl)
801 {
802 /*
803 * Automatically check for a SSL/TLS handshake...
804 */
805
806 con->auto_ssl = 0;
807
808 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
809 (!buf[0] || !strchr("DGHOPT", buf[0])))
810 {
811 /*
812 * Encrypt this connection...
813 */
814
815 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1
MS		 816 "cupsdReadClient: Saw first byte %02X, auto-negotiating "
817 "SSL/TLS session...", buf[0] & 255);
ef416fc2 818
411affcf 819 if (!encrypt_client(con))
f7deaa1a 820 cupsdCloseClient(con);
411affcf 821
f7deaa1a 822 return;
ef416fc2 823 }
824 }
825#endif /* HAVE_SSL */
826
827 switch (con->http.state)
828 {
829 case HTTP_WAITING :
830 /*
831 * See if we've received a request line...
832 */
833
834 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
835 {
f7deaa1a 836 cupsdCloseClient(con);
837 return;
ef416fc2 838 }
839
840 /*
841 * Ignore blank request lines...
842 */
843
844 if (line[0] == '\0')
845 break;
846
847 /*
848 * Clear other state variables...
849 */
850
851 httpClearFields(HTTP(con));
852
853 con->http.activity = time(NULL);
854 con->http.version = HTTP_1_0;
855 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
856 con->http.data_encoding = HTTP_ENCODE_LENGTH;
857 con->http.data_remaining = 0;
858 con->http._data_remaining = 0;
859 con->operation = HTTP_WAITING;
860 con->bytes = 0;
861 con->file = -1;
862 con->file_ready = 0;
863 con->pipe_pid = 0;
864 con->username[0] = '\0';
865 con->password[0] = '\0';
866 con->uri[0] = '\0';
867
868 cupsdClearString(&con->command);
869 cupsdClearString(&con->options);
b86bc4cf 870 cupsdClearString(&con->query_string);
ef416fc2 871
2abf387c 872 if (con->request)
873 {
874 ippDelete(con->request);
875 con->request = NULL;
876 }
877
878 if (con->response)
879 {
880 ippDelete(con->response);
881 con->response = NULL;
882 }
883
884 if (con->language)
ef416fc2 885 {
886 cupsLangFree(con->language);
887 con->language = NULL;
888 }
889
09a101d6 890#ifdef HAVE_GSSAPI
891 con->gss_have_creds = 0;
892#endif /* HAVE_GSSAPI */
893
ef416fc2 894 /*
895 * Grab the request line...
896 */
897
898 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
899 {
900 case 1 :
c934a06c
MS		 901 if (line[0])
902 {
903 cupsdLogMessage(CUPSD_LOG_ERROR,
904 "Bad request line \"%s\" from %s!", line,
905 con->http.hostname);
906 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
907 cupsdCloseClient(con);
908 }
f7deaa1a 909 return;
ef416fc2 910 case 2 :
911 con->http.version = HTTP_0_9;
912 break;
913 case 3 :
914 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
915 {
916 cupsdLogMessage(CUPSD_LOG_ERROR,
917 "Bad request line \"%s\" from %s!", line,
918 con->http.hostname);
5bd77a73 919 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 920 cupsdCloseClient(con);
921 return;
ef416fc2 922 }
923
924 if (major < 2)
925 {
926 con->http.version = (http_version_t)(major * 100 + minor);
927 if (con->http.version == HTTP_1_1 && KeepAlive)
928 con->http.keep_alive = HTTP_KEEPALIVE_ON;
929 else
930 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
931 }
932 else
933 {
5bd77a73 934 cupsdSendError(con, HTTP_NOT_SUPPORTED, CUPSD_AUTH_NONE);
f7deaa1a 935 cupsdCloseClient(con);
936 return;
ef416fc2 937 }
938 break;
939 }
940
941 /*
942 * Handle full URLs in the request line...
943 */
944
945 if (strcmp(con->uri, "*"))
946 {
e6013cfa 947 char scheme[HTTP_MAX_URI], /* Method/scheme */
ef416fc2 948 userpass[HTTP_MAX_URI], /* Username:password */
949 hostname[HTTP_MAX_URI], /* Hostname */
950 resource[HTTP_MAX_URI]; /* Resource path */
951 int port; /* Port number */
952
953
954 /*
955 * Separate the URI into its components...
956 */
957
a4d04587 958 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
e6013cfa 959 scheme, sizeof(scheme),
ef416fc2 960 userpass, sizeof(userpass),
961 hostname, sizeof(hostname), &port,
962 resource, sizeof(resource));
963
964 /*
965 * Only allow URIs with the servername, localhost, or an IP
966 * address...
967 */
968
e6013cfa 969 if (strcmp(scheme, "file") &&
ef416fc2 970 strcasecmp(hostname, ServerName) &&
971 strcasecmp(hostname, "localhost") &&
e6013cfa 972 !isdigit(hostname[0]) && hostname[0] != '[')
ef416fc2 973 {
974 /*
975 * Nope, we don't do proxies...
976 */
977
978 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad URI \"%s\" in request!",
979 con->uri);
5bd77a73 980 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE);
f7deaa1a 981 cupsdCloseClient(con);
982 return;
ef416fc2 983 }
984
985 /*
986 * Copy the resource portion back into the URI; both resource and
987 * con->uri are HTTP_MAX_URI bytes in size...
988 */
989
990 strcpy(con->uri, resource);
991 }
992
993 /*
994 * Process the request...
995 */
996
997 if (!strcmp(operation, "GET"))
998 con->http.state = HTTP_GET;
999 else if (!strcmp(operation, "PUT"))
1000 con->http.state = HTTP_PUT;
1001 else if (!strcmp(operation, "POST"))
1002 con->http.state = HTTP_POST;
1003 else if (!strcmp(operation, "DELETE"))
1004 con->http.state = HTTP_DELETE;
1005 else if (!strcmp(operation, "TRACE"))
1006 con->http.state = HTTP_TRACE;
1007 else if (!strcmp(operation, "OPTIONS"))
1008 con->http.state = HTTP_OPTIONS;
1009 else if (!strcmp(operation, "HEAD"))
1010 con->http.state = HTTP_HEAD;
1011 else
1012 {
1013 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad operation \"%s\"!", operation);
5bd77a73 1014 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 1015 cupsdCloseClient(con);
1016 return;
ef416fc2 1017 }
1018
dfd5680b 1019 gettimeofday(&(con->start), NULL);
ef416fc2 1020 con->operation = con->http.state;
1021
89d46774 1022 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %s %s HTTP/%d.%d",
1023 con->http.fd, operation, con->uri,
ef416fc2 1024 con->http.version / 100, con->http.version % 100);
1025
1026 con->http.status = HTTP_OK;
1027
49d87452
MS		 1028 if (!cupsArrayFind(ActiveClients, con))
1029 {
1030 cupsArrayAdd(ActiveClients, con);
1031 cupsdSetBusyState();
1032 }
3dfe78b3 1033
ef416fc2 1034 case HTTP_OPTIONS :
1035 case HTTP_DELETE :
1036 case HTTP_GET :
1037 case HTTP_HEAD :
1038 case HTTP_POST :
1039 case HTTP_PUT :
1040 case HTTP_TRACE :
1041 /*
1042 * Parse incoming parameters until the status changes...
1043 */
1044
f7deaa1a 1045 while ((status = httpUpdate(HTTP(con))) == HTTP_CONTINUE)
ee571f26 1046 if (!data_ready(con))
f7deaa1a 1047 break;
ef416fc2 1048
1049 if (status != HTTP_OK && status != HTTP_CONTINUE)
1050 {
5bd77a73 1051 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 1052 cupsdCloseClient(con);
1053 return;
ef416fc2 1054 }
1055 break;
1056
1057 default :
e6013cfa
MS		 1058 if (!data_ready(con) && recv(con->http.fd, buf, 1, MSG_PEEK) < 1)
1059 {
1060 /*
1061 * Connection closed...
1062 */
1063
1064 cupsdCloseClient(con);
1065 return;
1066 }
ef416fc2 1067 break; /* Anti-compiler-warning-code */
1068 }
1069
1070 /*
1071 * Handle new transfers...
1072 */
1073
1074 if (status == HTTP_OK)
1075 {
1076 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
1077 {
1078 /*
1079 * Figure out the locale from the Accept-Language and Content-Type
1080 * fields...
1081 */
1082
1083 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ',')) != NULL)
1084 *ptr = '\0';
1085
1086 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ';')) != NULL)
1087 *ptr = '\0';
1088
1089 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE], "charset=")) != NULL)
1090 {
1091 /*
1092 * Combine language and charset, and trim any extra params in the
1093 * content-type.
1094 */
1095
1096 snprintf(locale, sizeof(locale), "%s.%s",
1097 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
1098
1099 if ((ptr = strchr(locale, ',')) != NULL)
1100 *ptr = '\0';
1101 }
1102 else
1103 snprintf(locale, sizeof(locale), "%s.%s",
1104 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], DefaultCharset);
d6ae789d 1105
ef416fc2 1106 con->language = cupsLangGet(locale);
1107 }
1108 else
1109 con->language = cupsLangGet(DefaultLocale);
1110
1111 cupsdAuthorize(con);
1112
52f6f666 1113 if (!strncasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Keep-Alive", 10) &&
ef416fc2 1114 KeepAlive)
1115 con->http.keep_alive = HTTP_KEEPALIVE_ON;
52f6f666
MS		 1116 else if (!strncasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "close", 5))
1117 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
ef416fc2 1118
1119 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
1120 con->http.version >= HTTP_1_1)
1121 {
1122 /*
1123 * HTTP/1.1 and higher require the "Host:" field...
1124 */
1125
5bd77a73 1126 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1127 {
1128 cupsdCloseClient(con);
1129 return;
1130 }
ef416fc2 1131 }
e6013cfa
MS		 1132 else if (httpAddrLocalhost(con->http.hostaddr) &&
1133 strcasecmp(con->http.fields[HTTP_FIELD_HOST], "localhost") &&
1134 strncasecmp(con->http.fields[HTTP_FIELD_HOST], "localhost:", 10) &&
1135 strcmp(con->http.fields[HTTP_FIELD_HOST], "127.0.0.1") &&
1136 strncmp(con->http.fields[HTTP_FIELD_HOST], "127.0.0.1:", 10) &&
1137 strcmp(con->http.fields[HTTP_FIELD_HOST], "[::1]") &&
1138 strncmp(con->http.fields[HTTP_FIELD_HOST], "[::1]:", 6))
1139 {
1140 /*
1141 * Access to localhost must use "localhost" or the corresponding IPv4
1142 * or IPv6 values in the Host: field.
1143 */
1144
1145 cupsdLogMessage(CUPSD_LOG_WARN,
1146 "Request from \"%s\" using invalid Host: field \"%s\"",
1147 con->http.hostname, con->http.fields[HTTP_FIELD_HOST]);
1148
1149 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
1150 {
1151 cupsdCloseClient(con);
1152 return;
1153 }
1154 }
ef416fc2 1155 else if (con->operation == HTTP_OPTIONS)
1156 {
1157 /*
1158 * Do OPTIONS command...
1159 */
1160
5bd77a73 1161 if (con->best && con->best->type != CUPSD_AUTH_NONE)
ef416fc2 1162 {
5bd77a73 1163 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1164 {
1165 cupsdCloseClient(con);
1166 return;
1167 }
ef416fc2 1168 }
1169
1170 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1171 con->http.tls == NULL)
1172 {
1173#ifdef HAVE_SSL
1174 /*
1175 * Do encryption stuff...
1176 */
1177
5bd77a73 1178 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1179 {
1180 cupsdCloseClient(con);
1181 return;
1182 }
ef416fc2 1183
1184 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1185 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1186 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1187 httpPrintf(HTTP(con), "\r\n");
07725fee 1188
1189 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1190 {
1191 cupsdCloseClient(con);
1192 return;
1193 }
ef416fc2 1194
411affcf 1195 if (!encrypt_client(con))
f7deaa1a 1196 {
1197 cupsdCloseClient(con);
1198 return;
1199 }
ef416fc2 1200#else
5bd77a73 1201 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 1202 {
1203 cupsdCloseClient(con);
1204 return;
1205 }
ef416fc2 1206#endif /* HAVE_SSL */
1207 }
1208
5bd77a73 1209 if (!cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1210 {
1211 cupsdCloseClient(con);
1212 return;
1213 }
ef416fc2 1214
1215 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1216 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1217 httpPrintf(HTTP(con), "\r\n");
07725fee 1218
1219 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1220 {
1221 cupsdCloseClient(con);
1222 return;
1223 }
ef416fc2 1224 }
1225 else if (!is_path_absolute(con->uri))
1226 {
1227 /*
1228 * Protect against malicious users!
1229 */
1230
bf3816c7
MS		 1231 cupsdLogMessage(CUPSD_LOG_ERROR,
1232 "Request for non-absolute resource \"%s\"!", con->uri);
1233
5bd77a73 1234 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1235 {
1236 cupsdCloseClient(con);
1237 return;
1238 }
ef416fc2 1239 }
1240 else
1241 {
1242 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1243 con->http.tls == NULL)
1244 {
1245#ifdef HAVE_SSL
1246 /*
1247 * Do encryption stuff...
1248 */
1249
5bd77a73 1250 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1251 {
1252 cupsdCloseClient(con);
1253 return;
1254 }
ef416fc2 1255
1256 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1257 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1258 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1259 httpPrintf(HTTP(con), "\r\n");
07725fee 1260
1261 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1262 {
1263 cupsdCloseClient(con);
1264 return;
1265 }
ef416fc2 1266
411affcf 1267 if (!encrypt_client(con))
f7deaa1a 1268 {
1269 cupsdCloseClient(con);
1270 return;
1271 }
ef416fc2 1272#else
5bd77a73 1273 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
f7deaa1a 1274 {
1275 cupsdCloseClient(con);
1276 return;
1277 }
ef416fc2 1278#endif /* HAVE_SSL */
1279 }
1280
1281 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1282 {
5bd77a73 1283 cupsdSendError(con, status, CUPSD_AUTH_NONE);
f7deaa1a 1284 cupsdCloseClient(con);
1285 return;
ef416fc2 1286 }
1287
b423cd4c 1288 if (con->http.expect &&
1289 (con->operation == HTTP_POST || con->operation == HTTP_PUT))
ef416fc2 1290 {
b423cd4c 1291 if (con->http.expect == HTTP_CONTINUE)
1292 {
1293 /*
1294 * Send 100-continue header...
1295 */
1296
5bd77a73 1297 if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1298 {
1299 cupsdCloseClient(con);
1300 return;
1301 }
b423cd4c 1302 }
1303 else
1304 {
1305 /*
1306 * Send 417-expectation-failed header...
1307 */
1308
5bd77a73 1309 if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL, CUPSD_AUTH_NONE))
f7deaa1a 1310 {
1311 cupsdCloseClient(con);
1312 return;
1313 }
b423cd4c 1314
1315 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1316 httpPrintf(HTTP(con), "\r\n");
07725fee 1317
1318 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1319 {
1320 cupsdCloseClient(con);
1321 return;
1322 }
b423cd4c 1323 }
ef416fc2 1324 }
1325
1326 switch (con->http.state)
1327 {
1328 case HTTP_GET_SEND :
1329 if (!strncmp(con->uri, "/printers/", 10) &&
1330 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1331 {
1332 /*
1333 * Send PPD file - get the real printer name since printer
1334 * names are not case sensitive but filenames can be...
1335 */
1336
1337 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1338
1339 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1340 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1341 else
1342 {
5bd77a73 1343 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1344 {
1345 cupsdCloseClient(con);
1346 return;
1347 }
ef416fc2 1348
1349 break;
1350 }
1351 }
1352
1353 if ((!strncmp(con->uri, "/admin", 6) &&
1354 strncmp(con->uri, "/admin/conf/", 12) &&
1355 strncmp(con->uri, "/admin/log/", 11)) ||
1356 !strncmp(con->uri, "/printers", 9) ||
1357 !strncmp(con->uri, "/classes", 8) ||
1358 !strncmp(con->uri, "/help", 5) ||
1359 !strncmp(con->uri, "/jobs", 5))
1360 {
1361 /*
1362 * Send CGI output...
1363 */
1364
1365 if (!strncmp(con->uri, "/admin", 6))
1366 {
1367 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1368 ServerBin);
1369
b423cd4c 1370 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1371 }
1372 else if (!strncmp(con->uri, "/printers", 9))
1373 {
1374 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1375 ServerBin);
b423cd4c 1376
1377 if (con->uri[9] && con->uri[10])
1378 cupsdSetString(&con->options, con->uri + 9);
1379 else
1380 cupsdSetString(&con->options, NULL);
ef416fc2 1381 }
1382 else if (!strncmp(con->uri, "/classes", 8))
1383 {
1384 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1385 ServerBin);
b423cd4c 1386
1387 if (con->uri[8] && con->uri[9])
1388 cupsdSetString(&con->options, con->uri + 8);
1389 else
1390 cupsdSetString(&con->options, NULL);
ef416fc2 1391 }
1392 else if (!strncmp(con->uri, "/jobs", 5))
1393 {
1394 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1395 ServerBin);
b423cd4c 1396
1397 if (con->uri[5] && con->uri[6])
1398 cupsdSetString(&con->options, con->uri + 5);
1399 else
1400 cupsdSetString(&con->options, NULL);
ef416fc2 1401 }
1402 else
1403 {
1404 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1405 ServerBin);
ef416fc2 1406
b423cd4c 1407 if (con->uri[5] && con->uri[6])
1408 cupsdSetString(&con->options, con->uri + 5);
1409 else
1410 cupsdSetString(&con->options, NULL);
1411 }
ef416fc2 1412
1413 if (!cupsdSendCommand(con, con->command, con->options, 0))
1414 {
5bd77a73 1415 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1416 {
1417 cupsdCloseClient(con);
1418 return;
1419 }
ef416fc2 1420 }
1421 else
1422 cupsdLogRequest(con, HTTP_OK);
1423
1424 if (con->http.version <= HTTP_1_0)
1425 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1426 }
1427 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1428 (strchr(con->uri + 12, '/') ||
1429 strlen(con->uri) == 12)) ||
1430 (!strncmp(con->uri, "/admin/log/", 11) &&
1431 (strchr(con->uri + 11, '/') ||
1432 strlen(con->uri) == 11)))
1433 {
1434 /*
bf3816c7 1435 * GET can only be done to configuration files directly under
ef416fc2 1436 * /admin/conf...
1437 */
1438
bf3816c7
MS		 1439 cupsdLogMessage(CUPSD_LOG_ERROR,
1440 "Request for subdirectory \"%s\"!", con->uri);
1441
5bd77a73 1442 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1443 {
1444 cupsdCloseClient(con);
1445 return;
1446 }
ef416fc2 1447
1448 break;
1449 }
1450 else
1451 {
1452 /*
1453 * Serve a file...
1454 */
1455
1456 if ((filename = get_file(con, &filestats, buf,
1457 sizeof(buf))) == NULL)
1458 {
5bd77a73 1459 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1460 {
1461 cupsdCloseClient(con);
1462 return;
1463 }
ef416fc2 1464
1465 break;
1466 }
1467
4400e98d 1468 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1469
e1d6a774 1470 if (is_cgi(con, filename, &filestats, type))
ef416fc2 1471 {
1472 /*
1473 * Note: con->command and con->options were set by
e1d6a774 1474 * is_cgi()...
ef416fc2 1475 */
1476
1477 if (!cupsdSendCommand(con, con->command, con->options, 0))
1478 {
5bd77a73 1479 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1480 {
1481 cupsdCloseClient(con);
1482 return;
1483 }
ef416fc2 1484 }
1485 else
1486 cupsdLogRequest(con, HTTP_OK);
1487
1488 if (con->http.version <= HTTP_1_0)
1489 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1490 break;
1491 }
1492
1493 if (!check_if_modified(con, &filestats))
1494 {
5bd77a73 1495 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1496 {
1497 cupsdCloseClient(con);
1498 return;
1499 }
ef416fc2 1500 }
1501 else
1502 {
1503 if (type == NULL)
1504 strcpy(line, "text/plain");
1505 else
1506 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1507
a74454a7 1508 if (!write_file(con, HTTP_OK, filename, line, &filestats))
f7deaa1a 1509 {
1510 cupsdCloseClient(con);
1511 return;
1512 }
ef416fc2 1513 }
1514 }
1515 break;
1516
1517 case HTTP_POST_RECV :
1518 /*
1519 * See if the POST request includes a Content-Length field, and if
1520 * so check the length against any limits that are set...
1521 */
1522
ef416fc2 1523 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1524 MaxRequestSize > 0 &&
1525 con->http.data_remaining > MaxRequestSize)
1526 {
1527 /*
1528 * Request too large...
1529 */
1530
5bd77a73 1531 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1532 {
1533 cupsdCloseClient(con);
1534 return;
1535 }
ef416fc2 1536
1537 break;
1538 }
839a51c8
MS		 1539 else if (con->http.data_remaining < 0 ||
1540 (!con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1541 con->http.data_encoding == HTTP_ENCODE_LENGTH))
ef416fc2 1542 {
1543 /*
1544 * Negative content lengths are invalid!
1545 */
1546
5bd77a73 1547 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1548 {
1549 cupsdCloseClient(con);
1550 return;
1551 }
ef416fc2 1552
1553 break;
1554 }
1555
1556 /*
1557 * See what kind of POST request this is; for IPP requests the
1558 * content-type field will be "application/ipp"...
1559 */
1560
1561 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1562 "application/ipp"))
1563 con->request = ippNew();
1564 else if ((!strncmp(con->uri, "/admin", 6) &&
1565 strncmp(con->uri, "/admin/conf/", 12) &&
1566 strncmp(con->uri, "/admin/log/", 11)) ||
1567 !strncmp(con->uri, "/printers", 9) ||
1568 !strncmp(con->uri, "/classes", 8) ||
1569 !strncmp(con->uri, "/help", 5) ||
1570 !strncmp(con->uri, "/jobs", 5))
1571 {
1572 /*
1573 * CGI request...
1574 */
1575
1576 if (!strncmp(con->uri, "/admin", 6))
1577 {
1578 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1579 ServerBin);
1580
b423cd4c 1581 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1582 }
1583 else if (!strncmp(con->uri, "/printers", 9))
1584 {
1585 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1586 ServerBin);
b423cd4c 1587
1588 if (con->uri[9] && con->uri[10])
1589 cupsdSetString(&con->options, con->uri + 9);
1590 else
1591 cupsdSetString(&con->options, NULL);
ef416fc2 1592 }
1593 else if (!strncmp(con->uri, "/classes", 8))
1594 {
1595 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1596 ServerBin);
b423cd4c 1597
1598 if (con->uri[8] && con->uri[9])
1599 cupsdSetString(&con->options, con->uri + 8);
1600 else
1601 cupsdSetString(&con->options, NULL);
ef416fc2 1602 }
1603 else if (!strncmp(con->uri, "/jobs", 5))
1604 {
1605 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1606 ServerBin);
b423cd4c 1607
1608 if (con->uri[5] && con->uri[6])
1609 cupsdSetString(&con->options, con->uri + 5);
1610 else
1611 cupsdSetString(&con->options, NULL);
ef416fc2 1612 }
1613 else
1614 {
1615 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1616 ServerBin);
ef416fc2 1617
b423cd4c 1618 if (con->uri[5] && con->uri[6])
1619 cupsdSetString(&con->options, con->uri + 5);
1620 else
1621 cupsdSetString(&con->options, NULL);
1622 }
ef416fc2 1623
ef416fc2 1624 if (con->http.version <= HTTP_1_0)
1625 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1626 }
1627 else
1628 {
1629 /*
1630 * POST to a file...
1631 */
1632
1633 if ((filename = get_file(con, &filestats, buf,
1634 sizeof(buf))) == NULL)
1635 {
5bd77a73 1636 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1637 {
1638 cupsdCloseClient(con);
1639 return;
1640 }
ef416fc2 1641
1642 break;
1643 }
1644
4400e98d 1645 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1646
e1d6a774 1647 if (!is_cgi(con, filename, &filestats, type))
ef416fc2 1648 {
1649 /*
1650 * Only POST to CGI's...
1651 */
1652
5bd77a73 1653 if (!cupsdSendError(con, HTTP_UNAUTHORIZED, CUPSD_AUTH_NONE))
f7deaa1a 1654 {
1655 cupsdCloseClient(con);
1656 return;
1657 }
ef416fc2 1658 }
1659 }
1660 break;
1661
1662 case HTTP_PUT_RECV :
1663 /*
1664 * Validate the resource name...
1665 */
1666
1667 if (strncmp(con->uri, "/admin/conf/", 12) ||
1668 strchr(con->uri + 12, '/') ||
1669 strlen(con->uri) == 12)
1670 {
1671 /*
1672 * PUT can only be done to configuration files under
1673 * /admin/conf...
1674 */
1675
bf3816c7
MS		 1676 cupsdLogMessage(CUPSD_LOG_ERROR,
1677 "Request for subdirectory \"%s\"!", con->uri);
1678
5bd77a73 1679 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1680 {
1681 cupsdCloseClient(con);
1682 return;
1683 }
ef416fc2 1684
1685 break;
1686 }
1687
1688 /*
1689 * See if the PUT request includes a Content-Length field, and if
1690 * so check the length against any limits that are set...
1691 */
1692
ef416fc2 1693 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1694 MaxRequestSize > 0 &&
1695 con->http.data_remaining > MaxRequestSize)
1696 {
1697 /*
1698 * Request too large...
1699 */
1700
5bd77a73 1701 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1702 {
1703 cupsdCloseClient(con);
1704 return;
1705 }
ef416fc2 1706
1707 break;
1708 }
1709 else if (con->http.data_remaining < 0)
1710 {
1711 /*
1712 * Negative content lengths are invalid!
1713 */
1714
5bd77a73 1715 if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
f7deaa1a 1716 {
1717 cupsdCloseClient(con);
1718 return;
1719 }
ef416fc2 1720
1721 break;
1722 }
1723
1724 /*
1725 * Open a temporary file to hold the request...
1726 */
1727
1728 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1729 request_id ++);
1730 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1731
ef416fc2 1732 if (con->file < 0)
1733 {
a4924f6c
MS		 1734 cupsdLogMessage(CUPSD_LOG_ERROR,
1735 "Unable to create request file %s: %s",
1736 con->filename, strerror(errno));
1737
5bd77a73 1738 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1739 {
1740 cupsdCloseClient(con);
1741 return;
1742 }
ef416fc2 1743 }
1744
1745 fchmod(con->file, 0640);
1746 fchown(con->file, RunUser, Group);
1747 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1748 break;
1749
1750 case HTTP_DELETE :
1751 case HTTP_TRACE :
5bd77a73 1752 cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE);
f7deaa1a 1753 cupsdCloseClient(con);
1754 return;
ef416fc2 1755
1756 case HTTP_HEAD :
1757 if (!strncmp(con->uri, "/printers/", 10) &&
1758 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1759 {
1760 /*
1761 * Send PPD file - get the real printer name since printer
1762 * names are not case sensitive but filenames can be...
1763 */
1764
1765 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1766
1767 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1768 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1769 else
1770 {
5bd77a73 1771 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 1772 {
1773 cupsdCloseClient(con);
1774 return;
1775 }
ef416fc2 1776
1777 break;
1778 }
1779 }
1780
1781 if ((!strncmp(con->uri, "/admin", 6) &&
1782 strncmp(con->uri, "/admin/conf/", 12) &&
1783 strncmp(con->uri, "/admin/log/", 11)) ||
1784 !strncmp(con->uri, "/printers", 9) ||
1785 !strncmp(con->uri, "/classes", 8) ||
1786 !strncmp(con->uri, "/help", 5) ||
1787 !strncmp(con->uri, "/jobs", 5))
1788 {
1789 /*
1790 * CGI output...
1791 */
1792
5bd77a73 1793 if (!cupsdSendHeader(con, HTTP_OK, "text/html", CUPSD_AUTH_NONE))
f7deaa1a 1794 {
1795 cupsdCloseClient(con);
1796 return;
1797 }
ef416fc2 1798
1799 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 1800 {
1801 cupsdCloseClient(con);
1802 return;
1803 }
ef416fc2 1804
07725fee 1805 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1806 {
1807 cupsdCloseClient(con);
1808 return;
1809 }
d09495fa 1810
ef416fc2 1811 cupsdLogRequest(con, HTTP_OK);
1812 }
1813 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1814 (strchr(con->uri + 12, '/') ||
1815 strlen(con->uri) == 12)) ||
1816 (!strncmp(con->uri, "/admin/log/", 11) &&
1817 (strchr(con->uri + 11, '/') ||
1818 strlen(con->uri) == 11)))
1819 {
1820 /*
1821 * HEAD can only be done to configuration files under
1822 * /admin/conf...
1823 */
1824
bf3816c7
MS		 1825 cupsdLogMessage(CUPSD_LOG_ERROR,
1826 "Request for subdirectory \"%s\"!", con->uri);
1827
5bd77a73 1828 if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
f7deaa1a 1829 {
1830 cupsdCloseClient(con);
1831 return;
1832 }
ef416fc2 1833
1834 break;
1835 }
1836 else if ((filename = get_file(con, &filestats, buf,
1837 sizeof(buf))) == NULL)
1838 {
5bd77a73 1839 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html", CUPSD_AUTH_NONE))
f7deaa1a 1840 {
1841 cupsdCloseClient(con);
1842 return;
1843 }
ef416fc2 1844
1845 cupsdLogRequest(con, HTTP_NOT_FOUND);
1846 }
1847 else if (!check_if_modified(con, &filestats))
1848 {
5bd77a73 1849 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
f7deaa1a 1850 {
1851 cupsdCloseClient(con);
1852 return;
1853 }
ef416fc2 1854
1855 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
1856 }
1857 else
1858 {
1859 /*
1860 * Serve a file...
1861 */
1862
4400e98d 1863 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1864 if (type == NULL)
1865 strcpy(line, "text/plain");
1866 else
1867 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1868
5bd77a73 1869 if (!cupsdSendHeader(con, HTTP_OK, line, CUPSD_AUTH_NONE))
f7deaa1a 1870 {
1871 cupsdCloseClient(con);
1872 return;
1873 }
ef416fc2 1874
1875 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
1876 httpGetDateString(filestats.st_mtime)) < 0)
f7deaa1a 1877 {
1878 cupsdCloseClient(con);
1879 return;
1880 }
ef416fc2 1881
1882 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
1883 (unsigned long)filestats.st_size) < 0)
f7deaa1a 1884 {
1885 cupsdCloseClient(con);
1886 return;
1887 }
ef416fc2 1888
1889 cupsdLogRequest(con, HTTP_OK);
1890 }
1891
1892 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 1893 {
1894 cupsdCloseClient(con);
1895 return;
1896 }
ef416fc2 1897
07725fee 1898 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1899 {
1900 cupsdCloseClient(con);
1901 return;
1902 }
d09495fa 1903
ef416fc2 1904 con->http.state = HTTP_WAITING;
1905 break;
1906
1907 default :
1908 break; /* Anti-compiler-warning-code */
1909 }
1910 }
1911 }
1912
1913 /*
1914 * Handle any incoming data...
1915 */
1916
1917 switch (con->http.state)
1918 {
1919 case HTTP_PUT_RECV :
f7deaa1a 1920 do
ef416fc2 1921 {
f7deaa1a 1922 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
1923 {
1924 cupsdCloseClient(con);
1925 return;
1926 }
1927 else if (bytes > 0)
1928 {
1929 con->bytes += bytes;
ef416fc2 1930
f7deaa1a 1931 if (write(con->file, line, bytes) < bytes)
1932 {
1933 cupsdLogMessage(CUPSD_LOG_ERROR,
1934 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1935 bytes, con->filename, strerror(errno));
ef416fc2 1936
f7deaa1a 1937 close(con->file);
1938 con->file = -1;
1939 unlink(con->filename);
1940 cupsdClearString(&con->filename);
ef416fc2 1941
5bd77a73 1942 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1943 {
1944 cupsdCloseClient(con);
1945 return;
1946 }
1947 }
ef416fc2 1948 }
f7deaa1a 1949 }
ee571f26 1950 while (con->http.state == HTTP_PUT_RECV && data_ready(con));
ef416fc2 1951
1952 if (con->http.state == HTTP_WAITING)
1953 {
1954 /*
1955 * End of file, see how big it is...
1956 */
1957
1958 fstat(con->file, &filestats);
1959
ef416fc2 1960 close(con->file);
1961 con->file = -1;
1962
1963 if (filestats.st_size > MaxRequestSize &&
1964 MaxRequestSize > 0)
1965 {
1966 /*
1967 * Request is too big; remove it and send an error...
1968 */
1969
ef416fc2 1970 unlink(con->filename);
1971 cupsdClearString(&con->filename);
1972
5bd77a73 1973 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 1974 {
1975 cupsdCloseClient(con);
1976 return;
1977 }
ef416fc2 1978 }
1979
1980 /*
1981 * Install the configuration file...
1982 */
1983
1984 status = install_conf_file(con);
1985
1986 /*
1987 * Return the status to the client...
1988 */
1989
5bd77a73 1990 if (!cupsdSendError(con, status, CUPSD_AUTH_NONE))
f7deaa1a 1991 {
1992 cupsdCloseClient(con);
1993 return;
1994 }
ef416fc2 1995 }
1996 break;
1997
1998 case HTTP_POST_RECV :
f7deaa1a 1999 do
ef416fc2 2000 {
f7deaa1a 2001 if (con->request)
ef416fc2 2002 {
f7deaa1a 2003 /*
2004 * Grab any request data from the connection...
2005 */
ef416fc2 2006
f7deaa1a 2007 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
ef416fc2 2008 {
f7deaa1a 2009 cupsdLogMessage(CUPSD_LOG_ERROR,
2010 "cupsdReadClient: %d IPP Read Error!",
2011 con->http.fd);
2012
5bd77a73 2013 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 2014 cupsdCloseClient(con);
2015 return;
ef416fc2 2016 }
f7deaa1a 2017 else if (ipp_state != IPP_DATA)
2018 {
2019 if (con->http.state == HTTP_POST_SEND)
2020 {
5bd77a73 2021 cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
f7deaa1a 2022 cupsdCloseClient(con);
2023 return;
2024 }
ef416fc2 2025
f7deaa1a 2026 break;
2027 }
2028 else
2029 con->bytes += ippLength(con->request);
2030 }
ef416fc2 2031
f7deaa1a 2032 if (con->file < 0 && con->http.state != HTTP_POST_SEND)
2033 {
2034 /*
2035 * Create a file as needed for the request data...
2036 */
ef416fc2 2037
f7deaa1a 2038 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
2039 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
ef416fc2 2040
f7deaa1a 2041 if (con->file < 0)
2042 {
a4924f6c
MS		 2043 cupsdLogMessage(CUPSD_LOG_ERROR,
2044 "Unable to create request file %s: %s",
2045 con->filename, strerror(errno));
2046
5bd77a73 2047 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2048 {
2049 cupsdCloseClient(con);
2050 return;
2051 }
2052 }
ef416fc2 2053
f7deaa1a 2054 fchmod(con->file, 0640);
2055 fchown(con->file, RunUser, Group);
2056 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2057 }
ef416fc2 2058
f7deaa1a 2059 if (con->http.state != HTTP_POST_SEND)
ef416fc2 2060 {
f7deaa1a 2061 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
2062 {
2063 cupsdCloseClient(con);
2064 return;
2065 }
2066 else if (bytes > 0)
2067 {
2068 con->bytes += bytes;
ef416fc2 2069
f7deaa1a 2070 if (write(con->file, line, bytes) < bytes)
2071 {
2072 cupsdLogMessage(CUPSD_LOG_ERROR,
2073 "cupsdReadClient: Unable to write %d bytes to %s: %s",
2074 bytes, con->filename, strerror(errno));
ef416fc2 2075
f7deaa1a 2076 close(con->file);
2077 con->file = -1;
2078 unlink(con->filename);
2079 cupsdClearString(&con->filename);
ef416fc2 2080
5bd77a73 2081 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2082 {
2083 cupsdCloseClient(con);
2084 return;
2085 }
2086 }
2087 }
2088 else if (con->http.state == HTTP_POST_RECV)
2089 return;
2090 else if (con->http.state != HTTP_POST_SEND)
2091 {
2092 cupsdCloseClient(con);
2093 return;
ef416fc2 2094 }
2095 }
f7deaa1a 2096 }
ee571f26 2097 while (con->http.state == HTTP_POST_RECV && data_ready(con));
ef416fc2 2098
2099 if (con->http.state == HTTP_POST_SEND)
2100 {
2101 if (con->file >= 0)
2102 {
2103 fstat(con->file, &filestats);
2104
ef416fc2 2105 close(con->file);
2106 con->file = -1;
2107
2108 if (filestats.st_size > MaxRequestSize &&
2109 MaxRequestSize > 0)
2110 {
2111 /*
2112 * Request is too big; remove it and send an error...
2113 */
2114
ef416fc2 2115 unlink(con->filename);
2116 cupsdClearString(&con->filename);
2117
2118 if (con->request)
2119 {
2120 /*
2121 * Delete any IPP request data...
2122 */
2123
2124 ippDelete(con->request);
2125 con->request = NULL;
2126 }
2127
5bd77a73 2128 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
f7deaa1a 2129 {
2130 cupsdCloseClient(con);
2131 return;
2132 }
ef416fc2 2133 }
2134
2135 if (con->command)
2136 {
2137 if (!cupsdSendCommand(con, con->command, con->options, 0))
2138 {
5bd77a73 2139 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
f7deaa1a 2140 {
2141 cupsdCloseClient(con);
2142 return;
2143 }
ef416fc2 2144 }
2145 else
2146 cupsdLogRequest(con, HTTP_OK);
2147 }
2148 }
2149
2150 if (con->request)
f7deaa1a 2151 {
2152 cupsdProcessIPPRequest(con);
bc44d920 2153
2154 if (con->filename)
2155 {
bc44d920 2156 unlink(con->filename);
2157 cupsdClearString(&con->filename);
2158 }
2159
f7deaa1a 2160 return;
2161 }
ef416fc2 2162 }
2163 break;
2164
2165 default :
2166 break; /* Anti-compiler-warning-code */
2167 }
2168
3dfe78b3
MS		 2169 if (con->http.state == HTTP_WAITING)
2170 {
2171 if (!con->http.keep_alive)
2172 cupsdCloseClient(con);
2173 else
2174 {
2175 cupsArrayRemove(ActiveClients, con);
2176 cupsdSetBusyState();
2177 }
2178 }
ef416fc2 2179}
2180
2181
2182/*
2183 * 'cupsdSendCommand()' - Send output from a command via HTTP.
2184 */
2185
2186int /* O - 1 on success, 0 on failure */
2187cupsdSendCommand(
2188 cupsd_client_t *con, /* I - Client connection */
2189 char *command, /* I - Command to run */
2190 char *options, /* I - Command-line options */
2191 int root) /* I - Run as root? */
2192{
2193 int fd; /* Standard input file descriptor */
2194
2195
2196 if (con->filename)
ed486911 2197 {
ef416fc2 2198 fd = open(con->filename, O_RDONLY);
ef416fc2 2199
ed486911 2200 if (fd < 0)
2201 {
2202 cupsdLogMessage(CUPSD_LOG_ERROR,
2203 "cupsdSendCommand: %d Unable to open \"%s\" for reading: %s",
2204 con->http.fd, con->filename ? con->filename : "/dev/null",
2205 strerror(errno));
2206 return (0);
2207 }
ef416fc2 2208
ed486911 2209 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
2210 }
2211 else
2212 fd = -1;
ef416fc2 2213
2214 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
2215
ed486911 2216 if (fd >= 0)
2217 close(fd);
ef416fc2 2218
2219 cupsdLogMessage(CUPSD_LOG_INFO, "Started \"%s\" (pid=%d)", command,
2220 con->pipe_pid);
2221
2222 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendCommand: %d file=%d",
2223 con->http.fd, con->file);
2224
2225 if (con->pipe_pid == 0)
2226 return (0);
2227
2228 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2229
f899b121 2230 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
ef416fc2 2231
2232 con->sent_header = 0;
2233 con->file_ready = 0;
2234 con->got_fields = 0;
2235 con->field_col = 0;
2236
2237 return (1);
2238}
2239
2240
2241/*
2242 * 'cupsdSendError()' - Send an error message via HTTP.
2243 */
2244
2245int /* O - 1 if successful, 0 otherwise */
2246cupsdSendError(cupsd_client_t *con, /* I - Connection */
f899b121 2247 http_status_t code, /* I - Error code */
2248 int auth_type)/* I - Authentication type */
ef416fc2 2249{
b9faaae1
MS		 2250 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2251 "cupsdSendError(con=%p(%d), code=%d, auth_type=%d", con,
2252 con->http.fd, code, auth_type);
2253
4744bd90 2254#ifdef HAVE_SSL
2255 /*
2256 * Force client to upgrade for authentication if that is how the
2257 * server is configured...
2258 */
2259
2260 if (code == HTTP_UNAUTHORIZED &&
2261 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
2262 strcasecmp(con->http.hostname, "localhost") &&
2263 !con->http.tls)
2264 {
4744bd90 2265 code = HTTP_UPGRADE_REQUIRED;
2266 }
2267#endif /* HAVE_SSL */
2268
ef416fc2 2269 /*
2270 * Put the request in the access_log file...
2271 */
2272
2273 cupsdLogRequest(con, code);
2274
ef416fc2 2275 /*
2276 * To work around bugs in some proxies, don't use Keep-Alive for some
2277 * error messages...
f7deaa1a 2278 *
2279 * Kerberos authentication doesn't work without Keep-Alive, so
2280 * never disable it in that case.
ef416fc2 2281 */
2282
5bd77a73 2283 if (code >= HTTP_BAD_REQUEST && con->http.auth_type != CUPSD_AUTH_NEGOTIATE)
ef416fc2 2284 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
2285
2286 /*
2287 * Send an error message back to the client. If the error code is a
2288 * 400 or 500 series, make sure the message contains some text, too!
2289 */
2290
f899b121 2291 if (!cupsdSendHeader(con, code, NULL, auth_type))
ef416fc2 2292 return (0);
2293
2294#ifdef HAVE_SSL
2295 if (code == HTTP_UPGRADE_REQUIRED)
2296 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
2297 return (0);
2298
2299 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n") < 0)
2300 return (0);
2301#endif /* HAVE_SSL */
2302
f7deaa1a 2303 if (con->http.version >= HTTP_1_1 &&
2304 con->http.keep_alive == HTTP_KEEPALIVE_OFF)
ef416fc2 2305 {
2306 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
2307 return (0);
2308 }
2309
2310 if (code >= HTTP_BAD_REQUEST)
2311 {
2312 /*
2313 * Send a human-readable error message.
2314 */
2315
80ca4592 2316 char message[4096], /* Message for user */
2317 urltext[1024], /* URL redirection text */
2318 redirect[1024]; /* Redirection link */
ef416fc2 2319 const char *text; /* Status-specific text */
2320
80ca4592 2321
2322 redirect[0] = '\0';
2323
ef416fc2 2324 if (code == HTTP_UNAUTHORIZED)
2325 text = _cupsLangString(con->language,
2326 _("Enter your username and password or the "
2327 "root username and password to access this "
f7deaa1a 2328 "page. If you are using Kerberos authentication, "
2329 "make sure you have a valid Kerberos ticket."));
ef416fc2 2330 else if (code == HTTP_UPGRADE_REQUIRED)
80ca4592 2331 {
2332 text = urltext;
2333
2334 snprintf(urltext, sizeof(urltext),
2335 _cupsLangString(con->language,
2336 _("You must access this page using the URL "
2337 "<A HREF=\"https://%s:%d%s\">"
2338 "https://%s:%d%s</A>.")),
2339 con->servername, con->serverport, con->uri,
2340 con->servername, con->serverport, con->uri);
2341
2342 snprintf(redirect, sizeof(redirect),
b86bc4cf 2343 "<META HTTP-EQUIV=\"Refresh\" "
2344 "CONTENT=\"3;URL=https://%s:%d%s\">\n",
80ca4592 2345 con->servername, con->serverport, con->uri);
2346 }
ef416fc2 2347 else
2348 text = "";
2349
2350 snprintf(message, sizeof(message),
745129be
MS		 2351 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" "
2352 "\"http://www.w3.org/TR/html4/loose.dtd\">\n"
ef416fc2 2353 "<HTML>\n"
2354 "<HEAD>\n"
2355 "\t<META HTTP-EQUIV=\"Content-Type\" "
2356 "CONTENT=\"text/html; charset=utf-8\">\n"
2357 "\t<TITLE>%d %s</TITLE>\n"
2358 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2359 "HREF=\"/cups.css\">\n"
80ca4592 2360 "%s"
ef416fc2 2361 "</HEAD>\n"
2362 "<BODY>\n"
2363 "<H1>%d %s</H1>\n"
2364 "<P>%s</P>\n"
2365 "</BODY>\n"
2366 "</HTML>\n",
80ca4592 2367 code, httpStatus(code), redirect, code, httpStatus(code), text);
ef416fc2 2368
2369 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2370 return (0);
2371 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2372 (int)strlen(message)) < 0)
2373 return (0);
2374 if (httpPrintf(HTTP(con), "\r\n") < 0)
2375 return (0);
2376 if (httpPrintf(HTTP(con), "%s", message) < 0)
2377 return (0);
2378 }
2379 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2380 return (0);
2381
07725fee 2382 if (cupsdFlushHeader(con) < 0)
2383 return (0);
d09495fa 2384
ef416fc2 2385 con->http.state = HTTP_WAITING;
2386
2387 return (1);
2388}
2389
2390
ef416fc2 2391/*
2392 * 'cupsdSendHeader()' - Send an HTTP request.
2393 */
2394
2395int /* O - 1 on success, 0 on failure */
f899b121 2396cupsdSendHeader(
2397 cupsd_client_t *con, /* I - Client to send to */
2398 http_status_t code, /* I - HTTP status code */
2399 char *type, /* I - MIME type of document */
2400 int auth_type) /* I - Type of authentication */
ef416fc2 2401{
5a738aea
MS		 2402 char auth_str[1024]; /* Authorization string */
2403#ifdef HAVE_GSSAPI
2404 static char *gss_buf = NULL; /* Kerberos auth data buffer */
2405 static int gss_bufsize = 0; /* Size of Kerberos auth data buffer */
2406#endif /* HAVE_GSSAPI */
f7deaa1a 2407
2408
4744bd90 2409 /*
2410 * Send the HTTP status header...
2411 */
2412
b423cd4c 2413 if (code == HTTP_CONTINUE)
2414 {
4744bd90 2415 /*
2416 * 100-continue doesn't send any headers...
2417 */
2418
07725fee 2419 return (httpPrintf(HTTP(con), "HTTP/%d.%d 100 Continue\r\n\r\n",
2420 con->http.version / 100, con->http.version % 100) > 0);
b423cd4c 2421 }
2422
07725fee 2423 httpFlushWrite(HTTP(con));
2424
2425 con->http.data_encoding = HTTP_ENCODE_FIELDS;
2426
2427 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2428 con->http.version % 100, code, httpStatus(code)) < 0)
2429 return (0);
ef416fc2 2430 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2431 return (0);
2432 if (ServerHeader)
2433 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2434 return (0);
2435 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2436 {
2437 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2438 return (0);
2439 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2440 KeepAliveTimeout) < 0)
2441 return (0);
2442 }
2443 if (code == HTTP_METHOD_NOT_ALLOWED)
e6013cfa 2444 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n") < 0)
ef416fc2 2445 return (0);
2446
2447 if (code == HTTP_UNAUTHORIZED)
2448 {
5bd77a73 2449 if (auth_type == CUPSD_AUTH_NONE)
f899b121 2450 {
5bd77a73 2451 if (!con->best || con->best->type <= CUPSD_AUTH_NONE)
f899b121 2452 auth_type = DefaultAuthType;
2453 else
2454 auth_type = con->best->type;
2455 }
f7deaa1a 2456
2457 auth_str[0] = '\0';
2458
5bd77a73 2459 if (auth_type == CUPSD_AUTH_BASIC || auth_type == CUPSD_AUTH_BASICDIGEST)
f7deaa1a 2460 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
5bd77a73 2461 else if (auth_type == CUPSD_AUTH_DIGEST)
f7deaa1a 2462 snprintf(auth_str, sizeof(auth_str), "Digest realm=\"CUPS\", nonce=\"%s\"",
2463 con->http.hostname);
2464#ifdef HAVE_GSSAPI
5bd77a73 2465 else if (auth_type == CUPSD_AUTH_NEGOTIATE && con->gss_output_token.length == 0)
f7deaa1a 2466 strlcpy(auth_str, "Negotiate", sizeof(auth_str));
2467#endif /* HAVE_GSSAPI */
2468
2469#ifdef HAVE_AUTHORIZATION_H
5bd77a73 2470 if (con->best && auth_type != CUPSD_AUTH_NEGOTIATE)
ef416fc2 2471 {
f7deaa1a 2472 int i; /* Looping var */
2473 char *auth_key; /* Auth key buffer */
2474 size_t auth_size; /* Size of remaining buffer */
2475
2476
2477 auth_key = auth_str + strlen(auth_str);
2478 auth_size = sizeof(auth_str) - (auth_key - auth_str);
2479
2480 for (i = 0; i < con->best->num_names; i ++)
2481 {
2482 if (!strncasecmp(con->best->names[i], "@AUTHKEY(", 9))
2483 {
2484 snprintf(auth_key, auth_size, ", authkey=\"%s\"",
2485 con->best->names[i] + 9);
2486 /* end parenthesis is stripped in conf.c */
2487 break;
2488 }
2489 else if (!strcasecmp(con->best->names[i], "@SYSTEM") &&
2490 SystemGroupAuthKey)
2491 {
2492 snprintf(auth_key, auth_size, ", authkey=\"%s\"", SystemGroupAuthKey);
2493 break;
2494 }
2495 }
ef416fc2 2496 }
f7deaa1a 2497#endif /* HAVE_AUTHORIZATION_H */
2498
bc44d920 2499 if (auth_str[0])
2500 {
355e94dc 2501 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendHeader: WWW-Authenticate: %s",
bc44d920 2502 auth_str);
2503
2504 if (httpPrintf(HTTP(con), "WWW-Authenticate: %s\r\n", auth_str) < 0)
2505 return (0);
2506 }
ef416fc2 2507 }
2508
f7deaa1a 2509#ifdef HAVE_GSSAPI
2510 /*
2511 * WWW-Authenticate: Negotiate can be included even for
2512 * non-401 replies...
2513 */
2514
5a738aea 2515 if (con->gss_output_token.length > 0 && con->gss_output_token.length <= 65536)
f7deaa1a 2516 {
f7deaa1a 2517 OM_uint32 minor_status; /* Minor status code */
5a738aea
MS		 2518 int bufsize; /* Size of output token buffer */
2519
2520
2521 bufsize = con->gss_output_token.length * 4 / 3 + 2;
2522
2523 if (bufsize > gss_bufsize)
2524 {
2525 char *buf; /* New buffer */
2526
f7deaa1a 2527
5a738aea 2528 bufsize = (bufsize + 1023) & 1023;/* Round up */
f7deaa1a 2529
5a738aea
MS		 2530 if (gss_buf)
2531 buf = realloc(gss_buf, bufsize);
2532 else
2533 buf = malloc(bufsize);
2534
2535 if (!buf)
2536 {
2537 cupsdLogMessage(CUPSD_LOG_ERROR,
2538 "Unable to allocate %d bytes for Kerberos credentials!",
2539 bufsize);
2540 return (0);
2541 }
2542
2543 gss_buf = buf;
2544 gss_bufsize = bufsize;
2545 }
2546
2547 httpEncode64_2(gss_buf, gss_bufsize,
2548 con->gss_output_token.value,
f7deaa1a 2549 con->gss_output_token.length);
2550 gss_release_buffer(&minor_status, &con->gss_output_token);
2551
355e94dc 2552 cupsdLogMessage(CUPSD_LOG_DEBUG,
5a738aea 2553 "cupsdSendHeader: WWW-Authenticate: Negotiate %s", gss_buf);
355e94dc 2554
5a738aea
MS		 2555 if (httpPrintf(HTTP(con), "WWW-Authenticate: Negotiate %s\r\n",
2556 gss_buf) < 0)
f7deaa1a 2557 return (0);
2558 }
5a738aea
MS		 2559 else if (con->gss_output_token.length > 65536)
2560 {
2561 cupsdLogMessage(CUPSD_LOG_ERROR,
2562 "Kerberos credentials larger than 64k (%d)!",
ac884b6a 2563 (int)con->gss_output_token.length);
5a738aea
MS		 2564 return (0);
2565 }
f7deaa1a 2566#endif /* HAVE_GSSAPI */
2567
e1d6a774 2568 if (con->language && strcmp(con->language->language, "C"))
ef416fc2 2569 {
2570 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2571 con->language->language) < 0)
2572 return (0);
2573 }
2574
e1d6a774 2575 if (type)
ef416fc2 2576 {
2577 if (!strcmp(type, "text/html"))
2578 {
2579 if (httpPrintf(HTTP(con),
2580 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2581 return (0);
2582 }
2583 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2584 return (0);
2585 }
2586
2587 return (1);
2588}
2589
2590
2591/*
2592 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2593 */
2594
2595void
2596cupsdUpdateCGI(void)
2597{
2598 char *ptr, /* Pointer to end of line in buffer */
2599 message[1024]; /* Pointer to message text */
2600 int loglevel; /* Log level for message */
2601
2602
2603 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2604 message, sizeof(message))) != NULL)
f0ab5bff
MS		 2605 {
2606 if (loglevel == CUPSD_LOG_INFO)
2607 cupsdLogMessage(CUPSD_LOG_INFO, "%s", message);
2608
ef416fc2 2609 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2610 break;
f0ab5bff 2611 }
ef416fc2 2612
d09495fa 2613 if (ptr == NULL && !CGIStatusBuffer->bufused)
ef416fc2 2614 {
2615 /*
2616 * Fatal error on pipe - should never happen!
2617 */
2618
2619 cupsdLogMessage(CUPSD_LOG_CRIT,
2620 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2621 strerror(errno));
2622 }
2623}
2624
2625
2626/*
2627 * 'cupsdWriteClient()' - Write data to a client as needed.
2628 */
2629
f7deaa1a 2630void
ef416fc2 2631cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2632{
2633 int bytes; /* Number of bytes written */
2634 char buf[16385]; /* Data buffer */
2635 char *bufptr; /* Pointer into buffer */
2636 ipp_state_t ipp_state; /* IPP state value */
2637
2638
ef416fc2 2639 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1 2640 "cupsdWriteClient(con=%p(%d)) response=%p(%d), file=%d "
ef416fc2 2641 "pipe_pid=%d state=%d",
ae71f5de
MS		 2642 con, con->http.fd, con->response,
2643 con->response ? con->response->state : -1,
b94498cf 2644 con->file, con->pipe_pid, con->http.state);
ef416fc2 2645
2646 if (con->http.state != HTTP_GET_SEND &&
2647 con->http.state != HTTP_POST_SEND)
8b116e60
MS		 2648 {
2649 /*
2650 * If we get called in the wrong state, then something went wrong with the
2651 * connection and we need to shut it down...
2652 */
2653
2654 cupsdCloseClient(con);
f7deaa1a 2655 return;
8b116e60 2656 }
f7deaa1a 2657
2658 if (con->pipe_pid)
2659 {
2660 /*
2661 * Make sure we select on the CGI output...
2662 */
2663
f899b121 2664 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
f7deaa1a 2665
2666 if (!con->file_ready)
2667 {
2668 /*
2669 * Try again later when there is CGI output available...
2670 */
2671
2672 cupsdRemoveSelect(con->http.fd);
2673 return;
2674 }
2675
2676 con->file_ready = 0;
2677 }
ef416fc2 2678
b94498cf 2679 if (con->response && con->response->state != IPP_DATA)
ef416fc2 2680 {
07725fee 2681 ipp_state = ippWrite(HTTP(con), con->response);
b94498cf 2682 bytes = ipp_state != IPP_ERROR &&
2683 (con->file >= 0 || ipp_state != IPP_DATA);
ef416fc2 2684 }
2685 else if ((bytes = read(con->file, buf, sizeof(buf) - 1)) > 0)
2686 {
ef416fc2 2687 if (con->pipe_pid && !con->got_fields)
2688 {
2689 /*
2690 * Inspect the data for Content-Type and other fields.
2691 */
2692
2693 buf[bytes] = '\0';
2694
2695 for (bufptr = buf; !con->got_fields && *bufptr; bufptr ++)
d1c13e16 2696 {
ef416fc2 2697 if (*bufptr == '\n')
2698 {
2699 /*
2700 * Send line to client...
2701 */
2702
2703 if (bufptr > buf && bufptr[-1] == '\r')
2704 bufptr[-1] = '\0';
2705 *bufptr++ = '\0';
2706
d1c13e16 2707 cupsdLogMessage(CUPSD_LOG_DEBUG, "Script header: %s", buf);
ef416fc2 2708
2709 if (!con->sent_header)
2710 {
2711 /*
2712 * Handle redirection and CGI status codes...
2713 */
2714
2715 if (!strncasecmp(buf, "Location:", 9))
d6ae789d 2716 {
5bd77a73 2717 cupsdSendHeader(con, HTTP_SEE_OTHER, NULL, CUPSD_AUTH_NONE);
07725fee 2718 con->sent_header = 2;
2719
d6ae789d 2720 if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
f7deaa1a 2721 return;
d6ae789d 2722 }
ef416fc2 2723 else if (!strncasecmp(buf, "Status:", 7))
07725fee 2724 {
5bd77a73 2725 cupsdSendError(con, (http_status_t)atoi(buf + 7), CUPSD_AUTH_NONE);
07725fee 2726 con->sent_header = 2;
2727 }
ef416fc2 2728 else
4744bd90 2729 {
5bd77a73 2730 cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE);
07725fee 2731 con->sent_header = 1;
ef416fc2 2732
4744bd90 2733 if (con->http.version == HTTP_1_1)
2734 {
4744bd90 2735 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
f7deaa1a 2736 return;
4744bd90 2737 }
2738 }
ef416fc2 2739 }
2740
2741 if (strncasecmp(buf, "Status:", 7))
2742 httpPrintf(HTTP(con), "%s\r\n", buf);
2743
ef416fc2 2744 /*
2745 * Update buffer...
2746 */
2747
2748 bytes -= (bufptr - buf);
d1c13e16
MS		 2749
2750 if (bytes > 0)
2751 memmove(buf, bufptr, bytes + 1);
2752 else
2753 buf[0] = '\0';
2754
ef416fc2 2755 bufptr = buf - 1;
2756
2757 /*
2758 * See if the line was empty...
2759 */
2760
2761 if (con->field_col == 0)
d09495fa 2762 {
ef416fc2 2763 con->got_fields = 1;
d09495fa 2764
07725fee 2765 if (cupsdFlushHeader(con) < 0)
2766 {
2767 cupsdCloseClient(con);
f7deaa1a 2768 return;
07725fee 2769 }
d09495fa 2770
2771 if (con->http.version == HTTP_1_1)
2772 con->http.data_encoding = HTTP_ENCODE_CHUNKED;
2773 }
ef416fc2 2774 else
2775 con->field_col = 0;
2776 }
2777 else if (*bufptr != '\r')
2778 con->field_col ++;
d1c13e16 2779 }
ef416fc2 2780
ef416fc2 2781 if (bytes > 0 && !con->got_fields)
2782 {
2783 /*
2784 * Remaining text needs to go out...
2785 */
2786
2787 httpPrintf(HTTP(con), "%s", buf);
2788
2789 con->http.activity = time(NULL);
f7deaa1a 2790 return;
ef416fc2 2791 }
2792 else if (bytes == 0)
47879b8b 2793 {
ef416fc2 2794 con->http.activity = time(NULL);
47879b8b
MS		 2795 return;
2796 }
ef416fc2 2797 }
2798
4744bd90 2799 if (bytes > 0)
ef416fc2 2800 {
4744bd90 2801 if (httpWrite2(HTTP(con), buf, bytes) < 0)
2802 {
4744bd90 2803 cupsdCloseClient(con);
f7deaa1a 2804 return;
4744bd90 2805 }
ef416fc2 2806
01ce6322
MS		 2807 if (con->http.data_encoding == HTTP_ENCODE_CHUNKED)
2808 httpFlushWrite(HTTP(con));
ae71f5de 2809
4744bd90 2810 con->bytes += bytes;
ef416fc2 2811
4744bd90 2812 if (con->http.state == HTTP_WAITING)
2813 bytes = 0;
2814 }
ef416fc2 2815 }
2816
8b116e60
MS		 2817 if (bytes <= 0 ||
2818 (con->http.state != HTTP_GET_SEND && con->http.state != HTTP_POST_SEND))
ef416fc2 2819 {
ef416fc2 2820 cupsdLogRequest(con, HTTP_OK);
2821
2822 httpFlushWrite(HTTP(con));
2823
07725fee 2824 if (con->http.data_encoding == HTTP_ENCODE_CHUNKED && con->sent_header == 1)
ef416fc2 2825 {
07725fee 2826 if (httpWrite2(HTTP(con), "", 0) < 0)
ef416fc2 2827 {
2828 cupsdCloseClient(con);
f7deaa1a 2829 return;
ef416fc2 2830 }
2831 }
2832
2833 con->http.state = HTTP_WAITING;
2834
f7deaa1a 2835 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 2836
2837 if (con->file >= 0)
2838 {
f7deaa1a 2839 cupsdRemoveSelect(con->file);
ef416fc2 2840
2841 if (con->pipe_pid)
2842 cupsdEndProcess(con->pipe_pid, 0);
2843
ef416fc2 2844 close(con->file);
2845 con->file = -1;
2846 con->pipe_pid = 0;
2847 }
2848
2849 if (con->filename)
2850 {
ef416fc2 2851 unlink(con->filename);
2852 cupsdClearString(&con->filename);
2853 }
2854
2abf387c 2855 if (con->request)
ef416fc2 2856 {
2857 ippDelete(con->request);
2858 con->request = NULL;
2859 }
2860
2abf387c 2861 if (con->response)
ef416fc2 2862 {
2863 ippDelete(con->response);
2864 con->response = NULL;
2865 }
2866
2867 cupsdClearString(&con->command);
2868 cupsdClearString(&con->options);
b86bc4cf 2869 cupsdClearString(&con->query_string);
ef416fc2 2870
2871 if (!con->http.keep_alive)
2872 {
2873 cupsdCloseClient(con);
f7deaa1a 2874 return;
ef416fc2 2875 }
2876 }
2877
2878 con->http.activity = time(NULL);
f7deaa1a 2879}
ef416fc2 2880
f7deaa1a 2881
e1d6a774 2882/*
2883 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2884 */
2885
2886static int /* O - 1 if modified since */
2887check_if_modified(
2888 cupsd_client_t *con, /* I - Client connection */
2889 struct stat *filestats) /* I - File information */
2890{
2891 char *ptr; /* Pointer into field */
2892 time_t date; /* Time/date value */
2893 off_t size; /* Size/length value */
2894
2895
2896 size = 0;
2897 date = 0;
2898 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
2899
2900 if (*ptr == '\0')
2901 return (1);
2902
2903 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1
MS		 2904 "check_if_modified(con=%p(%d), "
2905 "filestats=%p(" CUPS_LLFMT ", %d)) If-Modified-Since=\"%s\"",
2906 con, con->http.fd, filestats, CUPS_LLCAST filestats->st_size,
2907 (int)filestats->st_mtime, ptr);
e1d6a774 2908
2909 while (*ptr != '\0')
2910 {
2911 while (isspace(*ptr) || *ptr == ';')
2912 ptr ++;
2913
2914 if (strncasecmp(ptr, "length=", 7) == 0)
2915 {
2916 ptr += 7;
2917 size = strtoll(ptr, NULL, 10);
2918
2919 while (isdigit(*ptr))
2920 ptr ++;
2921 }
2922 else if (isalpha(*ptr))
2923 {
2924 date = httpGetDateTime(ptr);
2925 while (*ptr != '\0' && *ptr != ';')
2926 ptr ++;
2927 }
e53920b9 2928 else
2929 ptr ++;
e1d6a774 2930 }
2931
e1d6a774 2932 return ((size != filestats->st_size && size != 0) ||
2933 (date < filestats->st_mtime && date != 0) ||
2934 (size == 0 && date == 0));
2935}
2936
2937
3dfe78b3
MS		 2938/*
2939 * 'compare_clients()' - Compare two client connections.
2940 */
2941
2942static int /* O - Result of comparison */
2943compare_clients(cupsd_client_t *a, /* I - First client */
2944 cupsd_client_t *b, /* I - Second client */
2945 void *data) /* I - User data (not used) */
2946{
2947 (void)data;
2948
2949 if (a == b)
2950 return (0);
2951 else if (a < b)
2952 return (-1);
2953 else
2954 return (1);
2955}
2956
2957
ee571f26
MS		 2958/*
2959 * 'data_ready()' - Check whether data is available from a client.
2960 */
2961
2962static int /* O - 1 if data is ready, 0 otherwise */
2963data_ready(cupsd_client_t *con) /* I - Client */
2964{
2965 if (con->http.used > 0)
2966 return (1);
2967#ifdef HAVE_SSL
2968 else if (con->http.tls)
2969 {
2970# ifdef HAVE_LIBSSL
2971 if (SSL_pending((SSL *)(con->http.tls)))
2972 return (1);
2973# elif defined(HAVE_GNUTLS)
2974 if (gnutls_record_check_pending(((http_tls_t *)(con->http.tls))->session))
2975 return (1);
2976# elif defined(HAVE_CDSASSL)
2977 size_t bytes; /* Bytes that are available */
2978
2979 if (!SSLGetBufferedReadSize(((http_tls_t *)(con->http.tls))->session,
2980 &bytes) && bytes > 0)
2981 return (1);
2982# endif /* HAVE_LIBSSL */
2983 }
2984#endif /* HAVE_SSL */
2985
2986 return (0);
2987}
2988
2989
80ca4592 2990#ifdef HAVE_SSL
e1d6a774 2991/*
2992 * 'encrypt_client()' - Enable encryption for the client...
2993 */
2994
2995static int /* O - 1 on success, 0 on error */
2996encrypt_client(cupsd_client_t *con) /* I - Client to encrypt */
2997{
80ca4592 2998# ifdef HAVE_LIBSSL
e1d6a774 2999 SSL_CTX *context; /* Context for encryption */
3000 SSL *conn; /* Connection for encryption */
411affcf 3001 BIO *bio; /* BIO data */
e1d6a774 3002 unsigned long error; /* Error code */
3003
3004
b9faaae1
MS		 3005 cupsdLogMessage(CUPSD_LOG_DEBUG2, "encrypt_client(con=%p(%d))", con,
3006 con->http.fd);
3007
8ca02f3c 3008 /*
3009 * Verify that we have a certificate...
3010 */
3011
3012 if (access(ServerKey, 0) || access(ServerCertificate, 0))
3013 {
3014 /*
3015 * Nope, make a self-signed certificate...
3016 */
3017
b86bc4cf 3018 if (!make_certificate(con))
8ca02f3c 3019 return (0);
3020 }
3021
e1d6a774 3022 /*
3023 * Create the SSL context and accept the connection...
3024 */
3025
3026 context = SSL_CTX_new(SSLv23_server_method());
3027
3028 SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
b19ccc9e 3029 if (SSLOptions & CUPSD_SSL_NOEMPTY)
58dc1933 3030 SSL_CTX_set_options(context, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
e1d6a774 3031 SSL_CTX_use_PrivateKey_file(context, ServerKey, SSL_FILETYPE_PEM);
58dc1933 3032 SSL_CTX_use_certificate_chain_file(context, ServerCertificate);
e1d6a774 3033
411affcf 3034 bio = BIO_new(_httpBIOMethods());
3035 BIO_ctrl(bio, BIO_C_SET_FILE_PTR, 0, (char *)HTTP(con));
3036
e1d6a774 3037 conn = SSL_new(context);
411affcf 3038 SSL_set_bio(conn, bio, bio);
e1d6a774 3039
e1d6a774 3040 if (SSL_accept(conn) != 1)
3041 {
b9faaae1 3042 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to encrypt connection from %s!",
e1d6a774 3043 con->http.hostname);
3044
3045 while ((error = ERR_get_error()) != 0)
b9faaae1 3046 cupsdLogMessage(CUPSD_LOG_ERROR, "%s", ERR_error_string(error, NULL));
e1d6a774 3047
3048 SSL_CTX_free(context);
3049 SSL_free(conn);
3050 return (0);
3051 }
3052
b9faaae1
MS		 3053 cupsdLogMessage(CUPSD_LOG_DEBUG, "Connection from %s now encrypted.",
3054 con->http.hostname);
e1d6a774 3055
3056 con->http.tls = conn;
3057 return (1);
f7deaa1a 3058
80ca4592 3059# elif defined(HAVE_GNUTLS)
e1d6a774 3060 http_tls_t *conn; /* TLS session object */
3061 int error; /* Error code */
3062 gnutls_certificate_server_credentials *credentials;
3063 /* TLS credentials */
3064
3065
b9faaae1
MS		 3066 cupsdLogMessage(CUPSD_LOG_DEBUG2, "encrypt_client(con=%p(%d))", con,
3067 con->http.fd);
3068
e1d6a774 3069 /*
3070 * Verify that we have a certificate...
3071 */
3072
3073 if (access(ServerKey, 0) || access(ServerCertificate, 0))
3074 {
3075 /*
3076 * Nope, make a self-signed certificate...
3077 */
3078
b86bc4cf 3079 if (!make_certificate(con))
8ca02f3c 3080 return (0);
e1d6a774 3081 }
3082
3083 /*
3084 * Create the SSL object and perform the SSL handshake...
3085 */
3086
89d46774 3087 conn = (http_tls_t *)malloc(sizeof(http_tls_t));
e1d6a774 3088
3089 if (conn == NULL)
3090 return (0);
3091
3092 credentials = (gnutls_certificate_server_credentials *)
3093 malloc(sizeof(gnutls_certificate_server_credentials));
3094 if (credentials == NULL)
3095 {
3096 cupsdLogMessage(CUPSD_LOG_ERROR,
b9faaae1
MS		 3097 "Unable to encrypt connection from %s - %s",
3098 con->http.hostname, strerror(errno));
e1d6a774 3099
3100 free(conn);
3101 return (0);
3102 }
3103
3104 gnutls_certificate_allocate_credentials(credentials);
f7deaa1a 3105 gnutls_certificate_set_x509_key_file(*credentials, ServerCertificate,
e1d6a774 3106 ServerKey, GNUTLS_X509_FMT_PEM);
3107
3108 gnutls_init(&(conn->session), GNUTLS_SERVER);
3109 gnutls_set_default_priority(conn->session);
3110 gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
411affcf 3111 gnutls_transport_set_ptr(conn->session, (gnutls_transport_ptr)HTTP(con));
3112 gnutls_transport_set_pull_function(conn->session, _httpReadGNUTLS);
3113 gnutls_transport_set_push_function(conn->session, _httpWriteGNUTLS);
e1d6a774 3114
3115 error = gnutls_handshake(conn->session);
3116
3117 if (error != GNUTLS_E_SUCCESS)
3118 {
3119 cupsdLogMessage(CUPSD_LOG_ERROR,
b9faaae1
MS		 3120 "Unable to encrypt connection from %s - %s",
3121 con->http.hostname, gnutls_strerror(error));
e1d6a774 3122
3123 gnutls_deinit(conn->session);
3124 gnutls_certificate_free_credentials(*credentials);
3125 free(conn);
3126 free(credentials);
3127 return (0);
3128 }
3129
b9faaae1
MS		 3130 cupsdLogMessage(CUPSD_LOG_DEBUG, "Connection from %s now encrypted.",
3131 con->http.hostname);
e1d6a774 3132
3133 conn->credentials = credentials;
3134 con->http.tls = conn;
3135 return (1);
3136
80ca4592 3137# elif defined(HAVE_CDSASSL)
89d46774 3138 OSStatus error; /* Error code */
3139 http_tls_t *conn; /* CDSA connection information */
e1d6a774 3140
3141
b9faaae1
MS		 3142 cupsdLogMessage(CUPSD_LOG_DEBUG2, "encrypt_client(con=%p(%d))", con,
3143 con->http.fd);
3144
89d46774 3145 if ((conn = (http_tls_t *)malloc(sizeof(http_tls_t))) == NULL)
3146 return (0);
e1d6a774 3147
89d46774 3148 error = 0;
3149 conn->session = NULL;
b86bc4cf 3150 conn->certsArray = get_cdsa_certificate(con);
e1d6a774 3151
8ca02f3c 3152 if (!conn->certsArray)
3153 {
3154 /*
3155 * No keychain (yet), make a self-signed certificate...
3156 */
3157
b86bc4cf 3158 if (make_certificate(con))
3159 conn->certsArray = get_cdsa_certificate(con);
8ca02f3c 3160 }
3161
89d46774 3162 if (!conn->certsArray)
e1d6a774 3163 {
3164 cupsdLogMessage(CUPSD_LOG_ERROR,
b9faaae1
MS		 3165 "Could not find signing key in keychain \"%s\"",
3166 ServerCertificate);
e1d6a774 3167 error = errSSLBadCert; /* errSSLBadConfiguration is a better choice, but not available on 10.2.x */
3168 }
3169
3170 if (!error)
89d46774 3171 error = SSLNewContext(true, &conn->session);
e1d6a774 3172
3173 if (!error)
89d46774 3174 error = SSLSetIOFuncs(conn->session, _httpReadCDSA, _httpWriteCDSA);
3175
3176 if (!error)
ed486911 3177 error = SSLSetProtocolVersionEnabled(conn->session, kSSLProtocol2, false);
e1d6a774 3178
3179 if (!error)
411affcf 3180 error = SSLSetConnection(conn->session, HTTP(con));
e1d6a774 3181
3182 if (!error)
89d46774 3183 error = SSLSetAllowsExpiredCerts(conn->session, true);
e1d6a774 3184
3185 if (!error)
89d46774 3186 error = SSLSetAllowsAnyRoot(conn->session, true);
ef416fc2 3187
89d46774 3188 if (!error)
3189 error = SSLSetCertificate(conn->session, conn->certsArray);
ef416fc2 3190
e1d6a774 3191 if (!error)
3192 {
3193 /*
3194 * Perform SSL/TLS handshake
3195 */
ef416fc2 3196
89d46774 3197 while ((error = SSLHandshake(conn->session)) == errSSLWouldBlock)
e1d6a774 3198 usleep(1000);
3199 }
ef416fc2 3200
e1d6a774 3201 if (error)
3202 {
3203 cupsdLogMessage(CUPSD_LOG_ERROR,
b9faaae1
MS		 3204 "Unable to encrypt connection from %s - %s (%d)",
3205 con->http.hostname, cssmErrorString(error), (int)error);
ef416fc2 3206
e1d6a774 3207 con->http.error = error;
3208 con->http.status = HTTP_ERROR;
ef416fc2 3209
89d46774 3210 if (conn->session)
3211 SSLDisposeContext(conn->session);
3212
3213 if (conn->certsArray)
3214 CFRelease(conn->certsArray);
3215
3216 free(conn);
ef416fc2 3217
e1d6a774 3218 return (0);
ef416fc2 3219 }
3220
b9faaae1
MS		 3221 cupsdLogMessage(CUPSD_LOG_DEBUG, "Connection from %s now encrypted.",
3222 con->http.hostname);
ef416fc2 3223
e1d6a774 3224 con->http.tls = conn;
3225 return (1);
3226
80ca4592 3227# endif /* HAVE_LIBSSL */
ef416fc2 3228}
80ca4592 3229#endif /* HAVE_SSL */
ef416fc2 3230
3231
3232#ifdef HAVE_CDSASSL
3233/*
b86bc4cf 3234 * 'get_cdsa_certificate()' - Get a SSL/TLS certificate from the System keychain.
ef416fc2 3235 */
3236
b86bc4cf 3237static CFArrayRef /* O - Array of certificates */
3238get_cdsa_certificate(cupsd_client_t *con) /* I - Client connection */
ef416fc2 3239{
3240 OSStatus err; /* Error info */
b86bc4cf 3241 SecKeychainRef keychain; /* Keychain reference */
3242 SecIdentitySearchRef search; /* Search reference */
ef416fc2 3243 SecIdentityRef identity; /* Identity */
b86bc4cf 3244 CFArrayRef certificates = NULL;
3245 /* Certificate array */
ef416fc2 3246
3247
b86bc4cf 3248 if ((err = SecKeychainOpen(ServerCertificate, &keychain)))
3249 {
b9faaae1
MS		 3250 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot open keychain \"%s\" - %s (%d)",
3251 ServerCertificate, cssmErrorString(err), (int)err);
b86bc4cf 3252 return (NULL);
3253 }
ef416fc2 3254
b86bc4cf 3255# if HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY
3256 /*
3257 * Use a policy to search for valid certificates who's common name matches the
3258 * servername...
3259 */
3260
3261 SecPolicySearchRef policy_search; /* Policy search ref */
3262 SecPolicyRef policy; /* Policy ref */
3263 CSSM_DATA options; /* Policy options */
3264 CSSM_APPLE_TP_SSL_OPTIONS
3265 ssl_options; /* SSL Option for hostname */
3266
3267
1f0275e3
MS		 3268 if (SecPolicySearchCreate(CSSM_CERT_X_509v3, &CSSMOID_APPLE_TP_SSL,
3269 NULL, &policy_search))
ef416fc2 3270 {
b86bc4cf 3271 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create a policy search reference");
3272 CFRelease(keychain);
3273 return (NULL);
3274 }
ef416fc2 3275
1f0275e3 3276 if (SecPolicySearchCopyNext(policy_search, &policy))
b86bc4cf 3277 {
b9faaae1 3278 cupsdLogMessage(CUPSD_LOG_ERROR,
b86bc4cf 3279 "Cannot find a policy to use for searching");
3280 CFRelease(keychain);
3281 CFRelease(policy_search);
3282 return (NULL);
3283 }
ef416fc2 3284
b86bc4cf 3285 memset(&ssl_options, 0, sizeof(ssl_options));
3286 ssl_options.Version = CSSM_APPLE_TP_SSL_OPTS_VERSION;
3287 ssl_options.ServerName = con->servername;
3288 ssl_options.ServerNameLen = strlen(con->servername);
ef416fc2 3289
b86bc4cf 3290 options.Data = (uint8 *)&ssl_options;
3291 options.Length = sizeof(ssl_options);
3292
1f0275e3 3293 if (SecPolicySetValue(policy, &options))
b86bc4cf 3294 {
b9faaae1 3295 cupsdLogMessage(CUPSD_LOG_ERROR,
b86bc4cf 3296 "Cannot set policy value to use for searching");
3297 CFRelease(keychain);
3298 CFRelease(policy_search);
3299 return (NULL);
3300 }
3301
3302 err = SecIdentitySearchCreateWithPolicy(policy, NULL, CSSM_KEYUSE_SIGN,
3303 keychain, FALSE, &search);
3304# else
3305 /*
3306 * Assume there is exactly one SecIdentity in the keychain...
3307 */
3308
3309 err = SecIdentitySearchCreate(keychain, CSSM_KEYUSE_SIGN, &search);
3310# endif /* HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY */
3311
3312 if (err)
3313 cupsdLogMessage(CUPSD_LOG_DEBUG,
b9faaae1
MS		 3314 "Cannot create keychain search reference: %s (%d)",
3315 cssmErrorString(err), (int)err);
b86bc4cf 3316 else
3317 {
3318 if ((err = SecIdentitySearchCopyNext(search, &identity)))
3319 {
3320 cupsdLogMessage(CUPSD_LOG_DEBUG,
b9faaae1
MS		 3321 "Cannot find signing key in keychain \"%s\": %s (%d)",
3322 ServerCertificate, cssmErrorString(err), (int)err);
b86bc4cf 3323 }
3324 else
3325 {
3326 if (CFGetTypeID(identity) != SecIdentityGetTypeID())
3327 cupsdLogMessage(CUPSD_LOG_ERROR,
3328 "SecIdentitySearchCopyNext CFTypeID failure!");
ef416fc2 3329 else
3330 {
b86bc4cf 3331 if ((certificates = CFArrayCreate(NULL, (const void **)&identity,
3332 1, &kCFTypeArrayCallBacks)) == NULL)
3333 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create certificate array");
ef416fc2 3334 }
3335
b86bc4cf 3336 CFRelease(identity);
ef416fc2 3337 }
3338
b86bc4cf 3339 CFRelease(search);
ef416fc2 3340 }
3341
b86bc4cf 3342# if HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY
3343 CFRelease(policy);
3344 CFRelease(policy_search);
3345# endif /* HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY */
3346
3347 return (certificates);
ef416fc2 3348}
3349#endif /* HAVE_CDSASSL */
3350
3351
3352/*
3353 * 'get_file()' - Get a filename and state info.
3354 */
3355
3356static char * /* O - Real filename */
3357get_file(cupsd_client_t *con, /* I - Client connection */
3358 struct stat *filestats, /* O - File information */
3359 char *filename, /* IO - Filename buffer */
3360 int len) /* I - Buffer length */
3361{
3362 int status; /* Status of filesystem calls */
3363 char *ptr; /* Pointer info filename */
3364 int plen; /* Remaining length after pointer */
db1f069b 3365 char language[7]; /* Language subdirectory, if any */
ef416fc2 3366
3367
3368 /*
f7deaa1a 3369 * Figure out the real filename...
ef416fc2 3370 */
3371
db1f069b
MS		 3372 language[0] = '\0';
3373
ef416fc2 3374 if (!strncmp(con->uri, "/ppd/", 5))
3375 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
f7deaa1a 3376 else if (!strncmp(con->uri, "/rss/", 5) && !strchr(con->uri + 5, '/'))
3377 snprintf(filename, len, "%s/rss/%s", CacheDir, con->uri + 5);
ef416fc2 3378 else if (!strncmp(con->uri, "/admin/conf/", 12))
3379 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
3380 else if (!strncmp(con->uri, "/admin/log/", 11))
3381 {
2e4ff8af 3382 if (!strncmp(con->uri + 11, "access_log", 10) && AccessLog[0] == '/')
ef416fc2 3383 strlcpy(filename, AccessLog, len);
2e4ff8af 3384 else if (!strncmp(con->uri + 11, "error_log", 9) && ErrorLog[0] == '/')
ef416fc2 3385 strlcpy(filename, ErrorLog, len);
2e4ff8af 3386 else if (!strncmp(con->uri + 11, "page_log", 8) && PageLog[0] == '/')
ef416fc2 3387 strlcpy(filename, PageLog, len);
3388 else
3389 return (NULL);
3390 }
d6ae789d 3391 else if (con->language)
db1f069b
MS		 3392 {
3393 snprintf(language, sizeof(language), "/%s", con->language->language);
3394 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
3395 }
ef416fc2 3396 else
3397 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3398
3399 if ((ptr = strchr(filename, '?')) != NULL)
3400 *ptr = '\0';
3401
3402 /*
3403 * Grab the status for this language; if there isn't a language-specific file
3404 * then fallback to the default one...
3405 */
3406
db1f069b 3407 if ((status = stat(filename, filestats)) != 0 && language[0] &&
d6ae789d 3408 strncmp(con->uri, "/ppd/", 5) &&
3409 strncmp(con->uri, "/admin/conf/", 12) &&
3410 strncmp(con->uri, "/admin/log/", 11))
ef416fc2 3411 {
3412 /*
d6ae789d 3413 * Drop the country code...
ef416fc2 3414 */
3415
db1f069b
MS		 3416 language[3] = '\0';
3417 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
d6ae789d 3418
3419 if ((ptr = strchr(filename, '?')) != NULL)
3420 *ptr = '\0';
3421
3422 if ((status = stat(filename, filestats)) != 0)
ef416fc2 3423 {
d6ae789d 3424 /*
3425 * Drop the language prefix and try the root directory...
3426 */
3427
db1f069b 3428 language[0] = '\0';
ef416fc2 3429 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3430
3431 if ((ptr = strchr(filename, '?')) != NULL)
3432 *ptr = '\0';
3433
3434 status = stat(filename, filestats);
3435 }
3436 }
3437
3438 /*
3439 * If we're found a directory, get the index.html file instead...
3440 */
3441
3442 if (!status && S_ISDIR(filestats->st_mode))
3443 {
db1f069b
MS		 3444 /*
3445 * Make sure the URI ends with a slash...
3446 */
ef416fc2 3447
db1f069b
MS		 3448 if (con->uri[strlen(con->uri) - 1] != '/')
3449 strlcat(con->uri, "/", sizeof(con->uri));
ef416fc2 3450
db1f069b
MS		 3451 /*
3452 * Find the directory index file, trying every language...
3453 */
ef416fc2 3454
db1f069b 3455 do
ef416fc2 3456 {
db1f069b
MS		 3457 if (status && language[0])
3458 {
3459 /*
3460 * Try a different language subset...
3461 */
3462
3463 if (language[3])
3464 language[0] = '\0'; /* Strip country code */
3465 else
3466 language[0] = '\0'; /* Strip language */
3467 }
3468
3469 /*
3470 * Look for the index file...
3471 */
3472
3473 snprintf(filename, len, "%s%s%s", DocumentRoot, language, con->uri);
3474
3475 if ((ptr = strchr(filename, '?')) != NULL)
3476 *ptr = '\0';
3477
3478 ptr = filename + strlen(filename);
3479 plen = len - (ptr - filename);
3480
3481 strlcpy(ptr, "index.html", plen);
ef416fc2 3482 status = stat(filename, filestats);
db1f069b
MS		 3483
3484#ifdef HAVE_JAVA
3485 if (status)
3486 {
3487 strlcpy(ptr, "index.class", plen);
3488 status = stat(filename, filestats);
3489 }
ef416fc2 3490#endif /* HAVE_JAVA */
3491
3492#ifdef HAVE_PERL
db1f069b
MS		 3493 if (status)
3494 {
3495 strlcpy(ptr, "index.pl", plen);
3496 status = stat(filename, filestats);
3497 }
ef416fc2 3498#endif /* HAVE_PERL */
3499
3500#ifdef HAVE_PHP
db1f069b
MS		 3501 if (status)
3502 {
3503 strlcpy(ptr, "index.php", plen);
3504 status = stat(filename, filestats);
3505 }
ef416fc2 3506#endif /* HAVE_PHP */
3507
3508#ifdef HAVE_PYTHON
db1f069b
MS		 3509 if (status)
3510 {
3511 strlcpy(ptr, "index.pyc", plen);
3512 status = stat(filename, filestats);
3513 }
ef416fc2 3514
db1f069b
MS		 3515 if (status)
3516 {
3517 strlcpy(ptr, "index.py", plen);
3518 status = stat(filename, filestats);
3519 }
ef416fc2 3520#endif /* HAVE_PYTHON */
db1f069b
MS		 3521
3522 }
3523 while (status && language[0]);
ef416fc2 3524 }
3525
b9faaae1
MS		 3526 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3527 "get_file(con=%p(%d), filestats=%p, filename=%p, len=%d) = "
3528 "%s", con, con->http.fd, filestats, filename, len,
3529 status ? "(null)" : filename);
ef416fc2 3530
3531 if (!status)
3532 con->http.data_remaining = (int)filestats->st_size;
3533
3534 if (status)
3535 return (NULL);
3536 else
3537 return (filename);
3538}
3539
3540
3541/*
3542 * 'install_conf_file()' - Install a configuration file.
3543 */
3544
3545static http_status_t /* O - Status */
3546install_conf_file(cupsd_client_t *con) /* I - Connection */
3547{
3548 cups_file_t *in, /* Input file */
3549 *out; /* Output file */
3550 char buffer[1024]; /* Copy buffer */
3551 int bytes; /* Number of bytes */
3552 char conffile[1024], /* Configuration filename */
3553 newfile[1024], /* New config filename */
3554 oldfile[1024]; /* Old config filename */
3555 struct stat confinfo; /* Config file info */
3556
3557
3558 /*
3559 * First construct the filenames...
3560 */
3561
3562 snprintf(conffile, sizeof(conffile), "%s%s", ServerRoot, con->uri + 11);
3563 snprintf(newfile, sizeof(newfile), "%s%s.N", ServerRoot, con->uri + 11);
3564 snprintf(oldfile, sizeof(oldfile), "%s%s.O", ServerRoot, con->uri + 11);
3565
3566 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...", conffile);
3567
3568 /*
3569 * Get the owner, group, and permissions of the configuration file.
3570 * If it doesn't exist, assign it to the User and Group in the
3571 * cupsd.conf file with mode 0640 permissions.
3572 */
3573
3574 if (stat(conffile, &confinfo))
3575 {
3576 confinfo.st_uid = User;
3577 confinfo.st_gid = Group;
3578 confinfo.st_mode = ConfigFilePerm;
3579 }
3580
3581 /*
3582 * Open the request file and new config file...
3583 */
3584
3585 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
3586 {
3587 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\" - %s",
3588 con->filename, strerror(errno));
3589 return (HTTP_SERVER_ERROR);
3590 }
3591
3592 if ((out = cupsFileOpen(newfile, "wb")) == NULL)
3593 {
3594 cupsFileClose(in);
3595 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open config file \"%s\" - %s",
3596 newfile, strerror(errno));
3597 return (HTTP_SERVER_ERROR);
3598 }
3599
3600 fchmod(cupsFileNumber(out), confinfo.st_mode);
3601 fchown(cupsFileNumber(out), confinfo.st_uid, confinfo.st_gid);
3602
3603 /*
3604 * Copy from the request to the new config file...
3605 */
3606
3607 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
3608 if (cupsFileWrite(out, buffer, bytes) < bytes)
3609 {
3610 cupsdLogMessage(CUPSD_LOG_ERROR,
3611 "Unable to copy to config file \"%s\" - %s",
3612 newfile, strerror(errno));
3613
3614 cupsFileClose(in);
3615 cupsFileClose(out);
3616 unlink(newfile);
3617
3618 return (HTTP_SERVER_ERROR);
3619 }
3620
3621 /*
3622 * Close the files...
3623 */
3624
3625 cupsFileClose(in);
3626 if (cupsFileClose(out))
3627 {
3628 cupsdLogMessage(CUPSD_LOG_ERROR,
3629 "Error file closing config file \"%s\" - %s",
3630 newfile, strerror(errno));
3631
3632 unlink(newfile);
3633
3634 return (HTTP_SERVER_ERROR);
3635 }
3636
3637 /*
3638 * Remove the request file...
3639 */
3640
3641 unlink(con->filename);
3642 cupsdClearString(&con->filename);
3643
3644 /*
3645 * Unlink the old backup, rename the current config file to the backup
3646 * filename, and rename the new config file to the config file name...
3647 */
3648
3649 if (unlink(oldfile))
3650 if (errno != ENOENT)
3651 {
3652 cupsdLogMessage(CUPSD_LOG_ERROR,
3653 "Unable to remove backup config file \"%s\" - %s",
3654 oldfile, strerror(errno));
3655
3656 unlink(newfile);
3657
3658 return (HTTP_SERVER_ERROR);
3659 }
3660
3661 if (rename(conffile, oldfile))
3662 if (errno != ENOENT)
3663 {
3664 cupsdLogMessage(CUPSD_LOG_ERROR,
3665 "Unable to rename old config file \"%s\" - %s",
3666 conffile, strerror(errno));
3667
3668 unlink(newfile);
3669
3670 return (HTTP_SERVER_ERROR);
3671 }
3672
3673 if (rename(newfile, conffile))
3674 {
3675 cupsdLogMessage(CUPSD_LOG_ERROR,
3676 "Unable to rename new config file \"%s\" - %s",
3677 newfile, strerror(errno));
3678
3679 rename(oldfile, conffile);
3680 unlink(newfile);
3681
3682 return (HTTP_SERVER_ERROR);
3683 }
3684
3685 /*
3686 * If the cupsd.conf file was updated, set the NeedReload flag...
3687 */
3688
3689 if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
3690 NeedReload = RELOAD_CUPSD;
3691 else
3692 NeedReload = RELOAD_ALL;
3693
3694 ReloadTime = time(NULL);
3695
3696 /*
3697 * Return that the file was created successfully...
3698 */
3699
3700 return (HTTP_CREATED);
3701}
3702
3703
e1d6a774 3704/*
3705 * 'is_cgi()' - Is the resource a CGI script/program?
3706 */
3707
3708static int /* O - 1 = CGI, 0 = file */
3709is_cgi(cupsd_client_t *con, /* I - Client connection */
3710 const char *filename, /* I - Real filename */
3711 struct stat *filestats, /* I - File information */
3712 mime_type_t *type) /* I - MIME type */
3713{
3714 const char *options; /* Options on URL */
3715
3716
e1d6a774 3717 /*
3718 * Get the options, if any...
3719 */
3720
3721 if ((options = strchr(con->uri, '?')) != NULL)
a0f6818e
MS		 3722 {
3723 options ++;
3724 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", options);
3725 }
b86bc4cf 3726
e1d6a774 3727 /*
3728 * Check for known types...
3729 */
3730
3731 if (!type || strcasecmp(type->super, "application"))
3732 {
b9faaae1
MS		 3733 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3734 "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
3735 "type=%s/%s) = 0", con, con->http.fd, filename, filestats,
3736 type ? type->super : "unknown",
3737 type ? type->type : "unknown");
e1d6a774 3738 return (0);
3739 }
3740
3741 if (!strcasecmp(type->type, "x-httpd-cgi") &&
3742 (filestats->st_mode & 0111))
3743 {
3744 /*
3745 * "application/x-httpd-cgi" is a CGI script.
3746 */
3747
3748 cupsdSetString(&con->command, filename);
3749
a0f6818e
MS		 3750 if (options)
3751 cupsdSetStringf(&con->options, " %s", options);
e1d6a774 3752
3753 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1
MS		 3754 "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
3755 "type=%s/%s) = 1", con, con->http.fd, filename, filestats,
3756 type ? type->super : "unknown",
3757 type ? type->type : "unknown");
e1d6a774 3758 return (1);
3759 }
3760#ifdef HAVE_JAVA
3761 else if (!strcasecmp(type->type, "x-httpd-java"))
3762 {
3763 /*
3764 * "application/x-httpd-java" is a Java servlet.
3765 */
3766
3767 cupsdSetString(&con->command, CUPS_JAVA);
3768
3769 if (options)
b94498cf 3770 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3771 else
b94498cf 3772 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3773
3774 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1
MS		 3775 "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
3776 "type=%s/%s) = 1", con, con->http.fd, filename, filestats,
3777 type ? type->super : "unknown",
3778 type ? type->type : "unknown");
e1d6a774 3779 return (1);
3780 }
3781#endif /* HAVE_JAVA */
3782#ifdef HAVE_PERL
3783 else if (!strcasecmp(type->type, "x-httpd-perl"))
3784 {
3785 /*
3786 * "application/x-httpd-perl" is a Perl page.
3787 */
3788
3789 cupsdSetString(&con->command, CUPS_PERL);
3790
3791 if (options)
b94498cf 3792 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3793 else
b94498cf 3794 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3795
3796 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1
MS		 3797 "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
3798 "type=%s/%s) = 1", con, con->http.fd, filename, filestats,
3799 type ? type->super : "unknown",
3800 type ? type->type : "unknown");
e1d6a774 3801 return (1);
3802 }
3803#endif /* HAVE_PERL */
3804#ifdef HAVE_PHP
3805 else if (!strcasecmp(type->type, "x-httpd-php"))
3806 {
3807 /*
3808 * "application/x-httpd-php" is a PHP page.
3809 */
3810
3811 cupsdSetString(&con->command, CUPS_PHP);
3812
3813 if (options)
b94498cf 3814 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3815 else
b94498cf 3816 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3817
3818 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1
MS		 3819 "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
3820 "type=%s/%s) = 1", con, con->http.fd, filename, filestats,
3821 type ? type->super : "unknown",
3822 type ? type->type : "unknown");
e1d6a774 3823 return (1);
3824 }
3825#endif /* HAVE_PHP */
3826#ifdef HAVE_PYTHON
3827 else if (!strcasecmp(type->type, "x-httpd-python"))
3828 {
3829 /*
3830 * "application/x-httpd-python" is a Python page.
3831 */
3832
3833 cupsdSetString(&con->command, CUPS_PYTHON);
3834
3835 if (options)
b94498cf 3836 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3837 else
b94498cf 3838 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3839
3840 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1
MS		 3841 "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
3842 "type=%s/%s) = 1", con, con->http.fd, filename, filestats,
3843 type ? type->super : "unknown",
3844 type ? type->type : "unknown");
e1d6a774 3845 return (1);
3846 }
3847#endif /* HAVE_PYTHON */
3848
b9faaae1
MS		 3849 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3850 "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
3851 "type=%s/%s) = 0", con, con->http.fd, filename, filestats,
3852 type ? type->super : "unknown",
3853 type ? type->type : "unknown");
e1d6a774 3854 return (0);
3855}
3856
3857
ef416fc2 3858/*
3859 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3860 */
3861
3862static int /* O - 0 if relative, 1 if absolute */
3863is_path_absolute(const char *path) /* I - Input path */
3864{
3865 /*
3866 * Check for a leading slash...
3867 */
3868
3869 if (path[0] != '/')
3870 return (0);
3871
3872 /*
3873 * Check for "/.." in the path...
3874 */
3875
3876 while ((path = strstr(path, "/..")) != NULL)
3877 {
3878 if (!path[3] || path[3] == '/')
3879 return (0);
3880
3881 path ++;
3882 }
3883
3884 /*
3885 * If we haven't found any relative paths, return 1 indicating an
3886 * absolute path...
3887 */
3888
3889 return (1);
3890}
3891
3892
8ca02f3c 3893#ifdef HAVE_SSL
4744bd90 3894/*
3895 * 'make_certificate()' - Make a self-signed SSL/TLS certificate.
3896 */
3897
8ca02f3c 3898static int /* O - 1 on success, 0 on failure */
b86bc4cf 3899make_certificate(cupsd_client_t *con) /* I - Client connection */
4744bd90 3900{
8ca02f3c 3901#if defined(HAVE_LIBSSL) && defined(HAVE_WAITPID)
d09495fa 3902 int pid, /* Process ID of command */
3903 status; /* Status of command */
3904 char command[1024], /* Command */
f7deaa1a 3905 *argv[12], /* Command-line arguments */
d09495fa 3906 *envp[MAX_ENV + 1], /* Environment variables */
3907 home[1024], /* HOME environment variable */
3908 infofile[1024], /* Type-in information for cert */
3909 seedfile[1024]; /* Random number seed file */
3910 int envc, /* Number of environment variables */
3911 bytes; /* Bytes written */
3912 cups_file_t *fp; /* Seed/info file */
3913 int infofd; /* Info file descriptor */
8ca02f3c 3914
3915
3916 /*
d09495fa 3917 * Run the "openssl" command to seed the random number generator and
3918 * generate a self-signed certificate that is good for 10 years:
3919 *
3920 * openssl rand -rand seedfile 1
8ca02f3c 3921 *
3922 * openssl req -new -x509 -keyout ServerKey \
3923 * -out ServerCertificate -days 3650 -nodes
d09495fa 3924 *
3925 * The seeding step is crucial in ensuring that the openssl command
3926 * does not block on systems without sufficient entropy...
8ca02f3c 3927 */
3928
3929 if (!cupsFileFind("openssl", getenv("PATH"), 1, command, sizeof(command)))
3930 {
3931 cupsdLogMessage(CUPSD_LOG_ERROR,
3932 "No SSL certificate and openssl command not found!");
3933 return (0);
3934 }
3935
d09495fa 3936 if (access("/dev/urandom", 0))
3937 {
3938 /*
3939 * If the system doesn't provide /dev/urandom, then any random source
3940 * will probably be blocking-style, so generate some random data to
3941 * use as a seed for the certificate. Note that we have already
3942 * seeded the random number generator in cupsdInitCerts()...
3943 */
3944
3945 cupsdLogMessage(CUPSD_LOG_INFO,
3946 "Seeding the random number generator...");
3947
3948 snprintf(home, sizeof(home), "HOME=%s", TempDir);
3949
3950 /*
3951 * Write the seed file...
3952 */
3953
3954 if ((fp = cupsTempFile2(seedfile, sizeof(seedfile))) == NULL)
3955 {
3956 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create seed file %s - %s",
3957 seedfile, strerror(errno));
3958 return (0);
3959 }
3960
3961 for (bytes = 0; bytes < 262144; bytes ++)
3962 cupsFilePutChar(fp, random());
3963
3964 cupsFileClose(fp);
3965
3966 /*
3967 * Run the openssl command to seed its random number generator...
3968 */
3969
3970 argv[0] = "openssl";
3971 argv[1] = "rand";
3972 argv[2] = "-rand";
3973 argv[3] = seedfile;
3974 argv[4] = "1";
3975 argv[5] = NULL;
3976
3977 envc = cupsdLoadEnv(envp, MAX_ENV);
3978 envp[envc++] = home;
3979 envp[envc] = NULL;
3980
b9faaae1 3981 if (!cupsdStartProcess(command, argv, envp, -1, -1, -1, -1, -1, 1, NULL, 0,
a4924f6c 3982 &pid))
d09495fa 3983 {
3984 unlink(seedfile);
3985 return (0);
3986 }
3987
3988 while (waitpid(pid, &status, 0) < 0)
3989 if (errno != EINTR)
3990 {
3991 status = 1;
3992 break;
3993 }
3994
b9faaae1 3995 cupsdFinishProcess(pid, command, sizeof(command), NULL);
d09495fa 3996
3997 /*
3998 * Remove the seed file, as it is no longer needed...
3999 */
4000
4001 unlink(seedfile);
4002
4003 if (status)
4004 {
4005 if (WIFEXITED(status))
4006 cupsdLogMessage(CUPSD_LOG_ERROR,
4007 "Unable to seed random number generator - "
4008 "the openssl command stopped with status %d!",
4009 WEXITSTATUS(status));
4010 else
4011 cupsdLogMessage(CUPSD_LOG_ERROR,
4012 "Unable to seed random number generator - "
4013 "the openssl command crashed on signal %d!",
4014 WTERMSIG(status));
4015
4016 return (0);
4017 }
4018 }
4019
4020 /*
4021 * Create a file with the certificate information fields...
4022 *
4023 * Note: This assumes that the default questions are asked by the openssl
4024 * command...
4025 */
4026
4027 if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
4028 {
4029 cupsdLogMessage(CUPSD_LOG_ERROR,
4030 "Unable to create certificate information file %s - %s",
4031 infofile, strerror(errno));
4032 return (0);
4033 }
4034
4035 cupsFilePrintf(fp, ".\n.\n.\n%s\n.\n%s\n%s\n",
4036 ServerName, ServerName, ServerAdmin);
4037 cupsFileClose(fp);
4038
8ca02f3c 4039 cupsdLogMessage(CUPSD_LOG_INFO,
4040 "Generating SSL server key and certificate...");
4041
4042 argv[0] = "openssl";
4043 argv[1] = "req";
4044 argv[2] = "-new";
4045 argv[3] = "-x509";
4046 argv[4] = "-keyout";
4047 argv[5] = ServerKey;
4048 argv[6] = "-out";
4049 argv[7] = ServerCertificate;
4050 argv[8] = "-days";
4051 argv[9] = "3650";
4052 argv[10] = "-nodes";
4053 argv[11] = NULL;
4054
4055 cupsdLoadEnv(envp, MAX_ENV);
4056
d09495fa 4057 infofd = open(infofile, O_RDONLY);
4058
a4924f6c 4059 if (!cupsdStartProcess(command, argv, envp, infofd, -1, -1, -1, -1, 1, NULL,
b9faaae1 4060 0, &pid))
d09495fa 4061 {
4062 close(infofd);
4063 unlink(infofile);
8ca02f3c 4064 return (0);
d09495fa 4065 }
4066
4067 close(infofd);
4068 unlink(infofile);
8ca02f3c 4069
4070 while (waitpid(pid, &status, 0) < 0)
4071 if (errno != EINTR)
4072 {
4073 status = 1;
4074 break;
4075 }
4076
b9faaae1 4077 cupsdFinishProcess(pid, command, sizeof(command), NULL);
8ca02f3c 4078
4079 if (status)
4080 {
4081 if (WIFEXITED(status))
4082 cupsdLogMessage(CUPSD_LOG_ERROR,
4083 "Unable to create SSL server key and certificate - "
4084 "the openssl command stopped with status %d!",
4085 WEXITSTATUS(status));
4086 else
4087 cupsdLogMessage(CUPSD_LOG_ERROR,
4088 "Unable to create SSL server key and certificate - "
4089 "the openssl command crashed on signal %d!",
4090 WTERMSIG(status));
4091 }
4092 else
4093 {
4094 cupsdLogMessage(CUPSD_LOG_INFO, "Created SSL server key file \"%s\"...",
4095 ServerKey);
4096 cupsdLogMessage(CUPSD_LOG_INFO,
4097 "Created SSL server certificate file \"%s\"...",
4098 ServerCertificate);
4099 }
4100
4101 return (!status);
4102
4103#elif defined(HAVE_GNUTLS)
4744bd90 4104 gnutls_x509_crt crt; /* Self-signed certificate */
4105 gnutls_x509_privkey key; /* Encryption key */
4106 cups_lang_t *language; /* Default language info */
4107 cups_file_t *fp; /* Key/cert file */
4108 unsigned char buffer[8192]; /* Buffer for x509 data */
4109 size_t bytes; /* Number of bytes of data */
4110 unsigned char serial[4]; /* Serial number buffer */
4111 time_t curtime; /* Current time */
4112 int result; /* Result of GNU TLS calls */
4113
4114
4115 /*
4116 * Create the encryption key...
4117 */
4118
8ca02f3c 4119 cupsdLogMessage(CUPSD_LOG_INFO, "Generating SSL server key...");
4744bd90 4120
4121 gnutls_x509_privkey_init(&key);
4122 gnutls_x509_privkey_generate(key, GNUTLS_PK_RSA, 2048, 0);
4123
4124 /*
4125 * Save it...
4126 */
4127
4128 bytes = sizeof(buffer);
4129
4130 if ((result = gnutls_x509_privkey_export(key, GNUTLS_X509_FMT_PEM,
4131 buffer, &bytes)) < 0)
4132 {
8ca02f3c 4133 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to export SSL server key - %s",
4744bd90 4134 gnutls_strerror(result));
4135 gnutls_x509_privkey_deinit(key);
8ca02f3c 4136 return (0);
4744bd90 4137 }
4138 else if ((fp = cupsFileOpen(ServerKey, "w")) != NULL)
4139 {
4140 cupsFileWrite(fp, (char *)buffer, bytes);
4141 cupsFileClose(fp);
4142
8ca02f3c 4143 cupsdLogMessage(CUPSD_LOG_INFO, "Created SSL server key file \"%s\"...",
4744bd90 4144 ServerKey);
4145 }
4146 else
4147 {
4148 cupsdLogMessage(CUPSD_LOG_ERROR,
8ca02f3c 4149 "Unable to create SSL server key file \"%s\" - %s",
4744bd90 4150 ServerKey, strerror(errno));
4151 gnutls_x509_privkey_deinit(key);
8ca02f3c 4152 return (0);
4744bd90 4153 }
4154
4155 /*
4156 * Create the self-signed certificate...
4157 */
4158
8ca02f3c 4159 cupsdLogMessage(CUPSD_LOG_INFO, "Generating self-signed SSL certificate...");
4744bd90 4160
4161 language = cupsLangDefault();
4162 curtime = time(NULL);
4163 serial[0] = curtime >> 24;
4164 serial[1] = curtime >> 16;
4165 serial[2] = curtime >> 8;
4166 serial[3] = curtime;
4167
4168 gnutls_x509_crt_init(&crt);
4169 if (strlen(language->language) == 5)
4170 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
4171 language->language + 3, 2);
4172 else
4173 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
4174 "US", 2);
4175 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COMMON_NAME, 0,
4176 ServerName, strlen(ServerName));
4177 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
4178 ServerName, strlen(ServerName));
4179 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME,
4180 0, "Unknown", 7);
4181 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0,
4182 "Unknown", 7);
4183 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_LOCALITY_NAME, 0,
4184 "Unknown", 7);
4185 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_PKCS9_EMAIL, 0,
4186 ServerAdmin, strlen(ServerAdmin));
4187 gnutls_x509_crt_set_key(crt, key);
4188 gnutls_x509_crt_set_serial(crt, serial, sizeof(serial));
4189 gnutls_x509_crt_set_activation_time(crt, curtime);
4190 gnutls_x509_crt_set_expiration_time(crt, curtime + 10 * 365 * 86400);
4191 gnutls_x509_crt_set_ca_status(crt, 0);
4192 gnutls_x509_crt_set_subject_alternative_name(crt, GNUTLS_SAN_DNSNAME,
4193 ServerName);
4194 gnutls_x509_crt_set_key_purpose_oid(crt, GNUTLS_KP_TLS_WWW_SERVER, 0);
4195 gnutls_x509_crt_set_key_usage(crt, GNUTLS_KEY_KEY_ENCIPHERMENT);
4196 gnutls_x509_crt_set_version(crt, 3);
4197
4198 bytes = sizeof(buffer);
4199 if (gnutls_x509_crt_get_key_id(crt, 0, buffer, &bytes) >= 0)
4200 gnutls_x509_crt_set_subject_key_id(crt, buffer, bytes);
4201
4202 gnutls_x509_crt_sign(crt, crt, key);
4203
4204 /*
4205 * Save it...
4206 */
4207
4208 bytes = sizeof(buffer);
4209 if ((result = gnutls_x509_crt_export(crt, GNUTLS_X509_FMT_PEM,
4210 buffer, &bytes)) < 0)
4211 cupsdLogMessage(CUPSD_LOG_ERROR,
8ca02f3c 4212 "Unable to export SSL server certificate - %s",
4744bd90 4213 gnutls_strerror(result));
4214 else if ((fp = cupsFileOpen(ServerCertificate, "w")) != NULL)
4215 {
4216 cupsFileWrite(fp, (char *)buffer, bytes);
4217 cupsFileClose(fp);
4218
4219 cupsdLogMessage(CUPSD_LOG_INFO,
8ca02f3c 4220 "Created SSL server certificate file \"%s\"...",
4744bd90 4221 ServerCertificate);
4222 }
4223 else
4224 cupsdLogMessage(CUPSD_LOG_ERROR,
8ca02f3c 4225 "Unable to create SSL server certificate file \"%s\" - %s",
4744bd90 4226 ServerCertificate, strerror(errno));
4227
4228 /*
4229 * Cleanup...
4230 */
4231
4232 gnutls_x509_crt_deinit(crt);
4233 gnutls_x509_privkey_deinit(key);
8ca02f3c 4234
4235 return (1);
4236
4237#elif defined(HAVE_CDSASSL) && defined(HAVE_WAITPID)
b86bc4cf 4238 int pid, /* Process ID of command */
4239 status; /* Status of command */
4240 char command[1024], /* Command */
4241 *argv[4], /* Command-line arguments */
4242 *envp[MAX_ENV + 1], /* Environment variables */
4243 keychain[1024], /* Keychain argument */
4244 infofile[1024]; /* Type-in information for cert */
4245 cups_file_t *fp; /* Seed/info file */
4246 int infofd; /* Info file descriptor */
8ca02f3c 4247
4248
4249 /*
b86bc4cf 4250 * Run the "certtool" command to generate a self-signed certificate...
8ca02f3c 4251 */
4252
4253 if (!cupsFileFind("certtool", getenv("PATH"), 1, command, sizeof(command)))
4254 {
4255 cupsdLogMessage(CUPSD_LOG_ERROR,
4256 "No SSL certificate and certtool command not found!");
4257 return (0);
4258 }
4259
b86bc4cf 4260 /*
4261 * Create a file with the certificate information fields...
4262 *
4263 * Note: This assumes that the default questions are asked by the certtool
4264 * command...
4265 */
4266
4267 if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
4268 {
4269 cupsdLogMessage(CUPSD_LOG_ERROR,
4270 "Unable to create certificate information file %s - %s",
4271 infofile, strerror(errno));
4272 return (0);
4273 }
4274
4275 cupsFilePrintf(fp, "%s\nr\n\ny\nb\ns\ny\n%s\n\n\n\n\n%s\ny\n",
4276 con->servername, con->servername, ServerAdmin);
4277 cupsFileClose(fp);
4278
8ca02f3c 4279 cupsdLogMessage(CUPSD_LOG_INFO,
4280 "Generating SSL server key and certificate...");
4281
4282 snprintf(keychain, sizeof(keychain), "k=%s", ServerCertificate);
4283
4284 argv[0] = "certtool";
4285 argv[1] = "c";
b86bc4cf 4286 argv[2] = keychain;
4287 argv[3] = NULL;
8ca02f3c 4288
4289 cupsdLoadEnv(envp, MAX_ENV);
4290
b86bc4cf 4291 infofd = open(infofile, O_RDONLY);
4292
a4924f6c 4293 if (!cupsdStartProcess(command, argv, envp, infofd, -1, -1, -1, -1, 1, NULL,
b9faaae1 4294 0, &pid))
b86bc4cf 4295 {
4296 close(infofd);
4297 unlink(infofile);
8ca02f3c 4298 return (0);
b86bc4cf 4299 }
4300
4301 close(infofd);
4302 unlink(infofile);
8ca02f3c 4303
4304 while (waitpid(pid, &status, 0) < 0)
4305 if (errno != EINTR)
4306 {
4307 status = 1;
4308 break;
4309 }
4310
b9faaae1 4311 cupsdFinishProcess(pid, command, sizeof(command), NULL);
8ca02f3c 4312
4313 if (status)
4314 {
4315 if (WIFEXITED(status))
4316 cupsdLogMessage(CUPSD_LOG_ERROR,
4317 "Unable to create SSL server key and certificate - "
4318 "the certtool command stopped with status %d!",
4319 WEXITSTATUS(status));
4320 else
4321 cupsdLogMessage(CUPSD_LOG_ERROR,
4322 "Unable to create SSL server key and certificate - "
4323 "the certtool command crashed on signal %d!",
4324 WTERMSIG(status));
4325 }
4326 else
4327 {
4328 cupsdLogMessage(CUPSD_LOG_INFO,
4329 "Created SSL server certificate file \"%s\"...",
4330 ServerCertificate);
4331 }
4332
4333 return (!status);
4334
4335#else
4336 return (0);
4337#endif /* HAVE_LIBSSL && HAVE_WAITPID */
4744bd90 4338}
8ca02f3c 4339#endif /* HAVE_SSL */
4744bd90 4340
4341
ef416fc2 4342/*
4343 * 'pipe_command()' - Pipe the output of a command to the remote client.
4344 */
4345
4346static int /* O - Process ID */
4347pipe_command(cupsd_client_t *con, /* I - Client connection */
4348 int infile, /* I - Standard input for command */
4349 int *outfile, /* O - Standard output for command */
4350 char *command, /* I - Command to run */
4351 char *options, /* I - Options for command */
4352 int root) /* I - Run as root? */
4353{
4354 int i; /* Looping var */
4355 int pid; /* Process ID */
b423cd4c 4356 char *commptr, /* Command string pointer */
4357 commch; /* Command string character */
ef416fc2 4358 char *uriptr; /* URI string pointer */
4359 int fds[2]; /* Pipe FDs */
4360 int argc; /* Number of arguments */
4361 int envc; /* Number of environment variables */
4362 char argbuf[10240], /* Argument buffer */
4363 *argv[100], /* Argument strings */
b94498cf 4364 *envp[MAX_ENV + 20]; /* Environment variables */
5bd77a73 4365 char auth_type[256], /* CUPSD_AUTH_TYPE environment variable */
b94498cf 4366 content_length[1024], /* CONTENT_LENGTH environment variable */
ef416fc2 4367 content_type[1024], /* CONTENT_TYPE environment variable */
4368 http_cookie[32768], /* HTTP_COOKIE environment variable */
f7deaa1a 4369 http_referer[1024], /* HTTP_REFERER environment variable */
ef416fc2 4370 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
4371 lang[1024], /* LANG environment variable */
b423cd4c 4372 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 4373 remote_addr[1024], /* REMOTE_ADDR environment variable */
4374 remote_host[1024], /* REMOTE_HOST environment variable */
4375 remote_user[1024], /* REMOTE_USER environment variable */
b94498cf 4376 script_filename[1024], /* SCRIPT_FILENAME environment variable */
ef416fc2 4377 script_name[1024], /* SCRIPT_NAME environment variable */
4378 server_name[1024], /* SERVER_NAME environment variable */
4379 server_port[1024]; /* SERVER_PORT environment variable */
7dfedb92 4380 ipp_attribute_t *attr; /* attributes-natural-language attribute */
5bd77a73
MS		 4381#ifdef HAVE_GSSAPI
4382 krb5_ccache ccache = NULL; /* Kerberos credentials */
e6013cfa 4383# if defined(HAVE_KRB5_CC_NEW_UNIQUE) || defined(HAVE_HEIMDAL)
5bd77a73 4384 char krb5ccname[1024]; /* KRB5CCNAME environment variable */
e6013cfa 4385# endif /* HAVE_KRB5_CC_NEW_UNIQUE || HAVE_HEIMDAL */
5bd77a73 4386#endif /* HAVE_GSSAPI */
ef416fc2 4387
4388
4389 /*
4390 * Parse a copy of the options string, which is of the form:
4391 *
b423cd4c 4392 * argument+argument+argument
4393 * ?argument+argument+argument
4394 * param=value&param=value
4395 * ?param=value&param=value
4396 * /name?argument+argument+argument
4397 * /name?param=value&param=value
ef416fc2 4398 *
4399 * If the string contains an "=" character after the initial name,
4400 * then we treat it as a HTTP GET form request and make a copy of
4401 * the remaining string for the environment variable.
4402 *
4403 * The string is always parsed out as command-line arguments, to
4404 * be consistent with Apache...
4405 */
4406
4407 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1
MS		 4408 "pipe_command(con=%p(%d), infile=%d, outfile=%p, "
4409 "command=\"%s\", options=\"%s\", root=%d)",
4410 con, con->http.fd, infile, outfile, command,
4411 options ? options : "(null)", root);
ef416fc2 4412
b86bc4cf 4413 argv[0] = command;
ef416fc2 4414
b423cd4c 4415 if (options)
4416 strlcpy(argbuf, options, sizeof(argbuf));
4417 else
4418 argbuf[0] = '\0';
4419
4420 if (argbuf[0] == '/')
ef416fc2 4421 {
4422 /*
b423cd4c 4423 * Found some trailing path information, set PATH_INFO...
ef416fc2 4424 */
4425
b423cd4c 4426 if ((commptr = strchr(argbuf, '?')) == NULL)
4427 commptr = argbuf + strlen(argbuf);
ef416fc2 4428
b423cd4c 4429 commch = *commptr;
4430 *commptr = '\0';
4431 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
4432 *commptr = commch;
4433 }
4434 else
4435 {
4436 commptr = argbuf;
4437 path_info[0] = '\0';
b94498cf 4438
4439 if (*commptr == ' ')
4440 commptr ++;
b423cd4c 4441 }
ef416fc2 4442
b86bc4cf 4443 if (*commptr == '?' && con->operation == HTTP_GET && !con->query_string)
b423cd4c 4444 {
4445 commptr ++;
b86bc4cf 4446 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr);
b423cd4c 4447 }
ef416fc2 4448
b423cd4c 4449 argc = 1;
ef416fc2 4450
b423cd4c 4451 if (*commptr)
4452 {
4453 argv[argc ++] = commptr;
ef416fc2 4454
b423cd4c 4455 for (; *commptr && argc < 99; commptr ++)
4456 {
ef416fc2 4457 /*
b423cd4c 4458 * Break arguments whenever we see a + or space...
ef416fc2 4459 */
4460
b423cd4c 4461 if (*commptr == ' ' || *commptr == '+')
4462 {
4463 while (*commptr == ' ' || *commptr == '+')
4464 *commptr++ = '\0';
ef416fc2 4465
b423cd4c 4466 /*
4467 * If we don't have a blank string, save it as another argument...
4468 */
ef416fc2 4469
b423cd4c 4470 if (*commptr)
4471 {
4472 argv[argc] = commptr;
4473 argc ++;
4474 }
4475 else
4476 break;
4477 }
4478 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
4479 isxdigit(commptr[2] & 255))
4480 {
4481 /*
4482 * Convert the %xx notation to the individual character.
4483 */
ef416fc2 4484
b423cd4c 4485 if (commptr[1] >= '0' && commptr[1] <= '9')
4486 *commptr = (commptr[1] - '0') << 4;
4487 else
4488 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
ef416fc2 4489
b423cd4c 4490 if (commptr[2] >= '0' && commptr[2] <= '9')
4491 *commptr |= commptr[2] - '0';
4492 else
4493 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 4494
b423cd4c 4495 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 4496
b423cd4c 4497 /*
4498 * Check for a %00 and break if that is the case...
4499 */
ef416fc2 4500
b423cd4c 4501 if (!*commptr)
4502 break;
4503 }
ef416fc2 4504 }
4505 }
4506
4507 argv[argc] = NULL;
4508
ef416fc2 4509 /*
4510 * Setup the environment variables as needed...
4511 */
4512
b94498cf 4513 if (con->username[0])
4514 {
5bd77a73 4515 snprintf(auth_type, sizeof(auth_type), "CUPSD_AUTH_TYPE=%s",
b94498cf 4516 httpGetField(HTTP(con), HTTP_FIELD_AUTHORIZATION));
4517
4518 if ((uriptr = strchr(auth_type + 10, ' ')) != NULL)
4519 *uriptr = '\0';
4520 }
4521 else
4522 auth_type[0] = '\0';
4523
7dfedb92
MS		 4524 if (con->request &&
4525 (attr = ippFindAttribute(con->request, "attributes-natural-language",
4526 IPP_TAG_LANGUAGE)) != NULL)
4527 {
4528 switch (strlen(attr->values[0].string.text))
4529 {
4530 default :
4531 /*
4532 * This is an unknown or badly formatted language code; use
4533 * the POSIX locale...
4534 */
4535
4536 strcpy(lang, "LANG=C");
4537 break;
4538
4539 case 2 :
4540 /*
4541 * Just the language code (ll)...
4542 */
4543
4544 snprintf(lang, sizeof(lang), "LANG=%s.UTF8",
4545 attr->values[0].string.text);
4546 break;
4547
4548 case 5 :
4549 /*
4550 * Language and country code (ll-cc)...
4551 */
4552
4553 snprintf(lang, sizeof(lang), "LANG=%c%c_%c%c.UTF8",
4554 attr->values[0].string.text[0],
4555 attr->values[0].string.text[1],
4556 toupper(attr->values[0].string.text[3] & 255),
4557 toupper(attr->values[0].string.text[4] & 255));
4558 break;
4559 }
4560 }
4561 else if (con->language)
4562 snprintf(lang, sizeof(lang), "LANG=%s.UTF8", con->language->language);
ef416fc2 4563 else
4564 strcpy(lang, "LANG=C");
4565
4566 strcpy(remote_addr, "REMOTE_ADDR=");
4567 httpAddrString(con->http.hostaddr, remote_addr + 12,
4568 sizeof(remote_addr) - 12);
4569
4570 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
4571 con->http.hostname);
4572
4573 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
4574 if ((uriptr = strchr(script_name, '?')) != NULL)
4575 *uriptr = '\0';
4576
b94498cf 4577 snprintf(script_filename, sizeof(script_filename), "SCRIPT_FILENAME=%s%s",
4578 DocumentRoot, script_name + 12);
4579
ef416fc2 4580 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
4581
4582 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
4583 con->servername);
4584
4585 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
4586
b94498cf 4587 if (auth_type[0])
4588 envp[envc ++] = auth_type;
4589
ef416fc2 4590 envp[envc ++] = lang;
4591 envp[envc ++] = "REDIRECT_STATUS=1";
b94498cf 4592 envp[envc ++] = "GATEWAY_INTERFACE=CGI/1.1";
ef416fc2 4593 envp[envc ++] = server_name;
4594 envp[envc ++] = server_port;
4595 envp[envc ++] = remote_addr;
4596 envp[envc ++] = remote_host;
4597 envp[envc ++] = script_name;
b94498cf 4598 envp[envc ++] = script_filename;
ef416fc2 4599
b423cd4c 4600 if (path_info[0])
4601 envp[envc ++] = path_info;
4602
ef416fc2 4603 if (con->username[0])
4604 {
4605 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
4606
4607 envp[envc ++] = remote_user;
5bd77a73
MS		 4608
4609 /*
4610 * Save Kerberos credentials, if any...
4611 */
4612
4613#ifdef HAVE_GSSAPI
4614 if (con->gss_have_creds)
4615 {
4616# if !defined(HAVE_KRB5_CC_NEW_UNIQUE) && !defined(HAVE_HEIMDAL)
4617 cupsdLogMessage(CUPSD_LOG_INFO,
4618 "Sorry, your version of Kerberos does not support "
4619 "delegated credentials!");
4620
4621# else
4622 krb5_error_code error; /* Kerberos error code */
4623 OM_uint32 major_status, /* Major status code */
4624 minor_status; /* Minor status code */
4625 krb5_principal principal; /* Kerberos principal */
4626
4627
4628# ifdef __APPLE__
4629 /*
4630 * If the weak-linked GSSAPI/Kerberos library is not present, don't try
4631 * to use it...
4632 */
4633
4634 if (krb5_init_context != NULL)
4635 {
4636# endif /* __APPLE__ */
4637
0af14961
MS		 4638 if (!KerberosInitialized)
4639 {
4640 /*
4641 * Setup a Kerberos context for the scheduler to use...
4642 */
4643
4644 KerberosInitialized = 1;
4645
4646 if (krb5_init_context(&KerberosContext))
4647 {
4648 KerberosContext = NULL;
4649
b9faaae1
MS		 4650 cupsdLogMessage(CUPSD_LOG_ERROR,
4651 "Unable to initialize Kerberos context");
0af14961
MS		 4652 }
4653 }
4654
5bd77a73
MS		 4655 /*
4656 * We MUST create a file-based cache because memory-based caches are
4657 * only valid for the current process/address space.
4658 *
4659 * Due to various bugs/features in different versions of Kerberos, we
4660 * need either the krb5_cc_new_unique() function or Heimdal's version
4661 * of krb5_cc_gen_new() to create a new FILE: credential cache that
4662 * can be passed to the backend. These functions create a temporary
4663 * file (typically in /tmp) containing the cached credentials, which
4664 * are removed when we have successfully printed a job.
4665 */
4666
0af14961
MS		 4667 if (KerberosContext)
4668 {
5bd77a73 4669# ifdef HAVE_KRB5_CC_NEW_UNIQUE
0af14961
MS		 4670 if ((error = krb5_cc_new_unique(KerberosContext, "FILE", NULL,
4671 &ccache)) != 0)
5bd77a73 4672# else /* HAVE_HEIMDAL */
0af14961
MS		 4673 if ((error = krb5_cc_gen_new(KerberosContext, &krb5_fcc_ops,
4674 &ccache)) != 0)
5bd77a73 4675# endif /* HAVE_KRB5_CC_NEW_UNIQUE */
5bd77a73 4676 {
0af14961
MS		 4677 cupsdLogMessage(CUPSD_LOG_ERROR,
4678 "Unable to create new credentials cache (%d/%s)",
4679 error, strerror(errno));
4680 ccache = NULL;
4681 }
4682 else if ((error = krb5_parse_name(KerberosContext, con->username,
4683 &principal)) != 0)
4684 {
4685 cupsdLogMessage(CUPSD_LOG_ERROR,
4686 "Unable to parse kerberos username (%d/%s)", error,
4687 strerror(errno));
4688 krb5_cc_destroy(KerberosContext, ccache);
4689 ccache = NULL;
4690 }
4691 else if ((error = krb5_cc_initialize(KerberosContext, ccache,
4692 principal)))
4693 {
4694 cupsdLogMessage(CUPSD_LOG_ERROR,
b9faaae1
MS		 4695 "Unable to initialize credentials cache (%d/%s)",
4696 error, strerror(errno));
5bd77a73 4697 krb5_cc_destroy(KerberosContext, ccache);
0af14961 4698 krb5_free_principal(KerberosContext, principal);
5bd77a73
MS		 4699 ccache = NULL;
4700 }
4701 else
4702 {
0af14961
MS		 4703 krb5_free_principal(KerberosContext, principal);
4704
5bd77a73 4705 /*
0af14961 4706 * Copy the user's credentials to the new cache file...
5bd77a73
MS		 4707 */
4708
0af14961
MS		 4709 major_status = gss_krb5_copy_ccache(&minor_status,
4710 con->gss_delegated_cred, ccache);
5bd77a73 4711
0af14961
MS		 4712 if (GSS_ERROR(major_status))
4713 {
4714 cupsdLogGSSMessage(CUPSD_LOG_ERROR, major_status, minor_status,
4715 "Unable to import client credentials cache");
4716 krb5_cc_destroy(KerberosContext, ccache);
4717 ccache = NULL;
4718 }
4719 else
4720 {
4721 /*
4722 * Add the KRB5CCNAME environment variable to the job so that the
4723 * backend can use the credentials when printing.
4724 */
4725
4726 snprintf(krb5ccname, sizeof(krb5ccname), "KRB5CCNAME=FILE:%s",
4727 krb5_cc_get_name(KerberosContext, ccache));
4728 envp[envc++] = krb5ccname;
4729
4730 if (!RunUser)
4731 chown(krb5_cc_get_name(KerberosContext, ccache), User, Group);
4732 }
4733 }
5bd77a73
MS		 4734 }
4735# ifdef __APPLE__
4736 }
4737# endif /* __APPLE__ */
4738# endif /* HAVE_KRB5_CC_NEW_UNIQUE || HAVE_HEIMDAL */
4739 }
4740#endif /* HAVE_GSSAPI */
ef416fc2 4741 }
4742
4743 if (con->http.version == HTTP_1_1)
4744 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
4745 else if (con->http.version == HTTP_1_0)
4746 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
4747 else
4748 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
4749
4750 if (con->http.cookie)
4751 {
4752 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
4753 con->http.cookie);
4754 envp[envc ++] = http_cookie;
4755 }
4756
4757 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
4758 {
4759 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
4760 con->http.fields[HTTP_FIELD_USER_AGENT]);
4761 envp[envc ++] = http_user_agent;
4762 }
4763
f7deaa1a 4764 if (con->http.fields[HTTP_FIELD_REFERER][0])
4765 {
4766 snprintf(http_referer, sizeof(http_referer), "HTTP_REFERER=%s",
4767 con->http.fields[HTTP_FIELD_REFERER]);
4768 envp[envc ++] = http_referer;
4769 }
4770
ef416fc2 4771 if (con->operation == HTTP_GET)
4772 {
ef416fc2 4773 envp[envc ++] = "REQUEST_METHOD=GET";
4774
b86bc4cf 4775 if (con->query_string)
ef416fc2 4776 {
4777 /*
4778 * Add GET form variables after ?...
4779 */
4780
b86bc4cf 4781 envp[envc ++] = con->query_string;
ef416fc2 4782 }
3dfe78b3
MS		 4783 else
4784 envp[envc ++] = "QUERY_STRING=";
ef416fc2 4785 }
4786 else
4787 {
e1d6a774 4788 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
4789 CUPS_LLCAST con->bytes);
ef416fc2 4790 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
4791 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
4792
4793 envp[envc ++] = "REQUEST_METHOD=POST";
4794 envp[envc ++] = content_length;
4795 envp[envc ++] = content_type;
4796 }
4797
4798 /*
4799 * Tell the CGI if we are using encryption...
4800 */
4801
a74454a7 4802 if (con->http.tls)
ef416fc2 4803 envp[envc ++] = "HTTPS=ON";
4804
4805 /*
4806 * Terminate the environment array...
4807 */
4808
4809 envp[envc] = NULL;
4810
4811 if (LogLevel == CUPSD_LOG_DEBUG2)
4812 {
4813 for (i = 0; i < argc; i ++)
4814 cupsdLogMessage(CUPSD_LOG_DEBUG2,
4815 "pipe_command: argv[%d] = \"%s\"", i, argv[i]);
4816 for (i = 0; i < envc; i ++)
4817 cupsdLogMessage(CUPSD_LOG_DEBUG2,
4818 "pipe_command: envp[%d] = \"%s\"", i, envp[i]);
4819 }
4820
4821 /*
4822 * Create a pipe for the output...
4823 */
4824
4825 if (cupsdOpenPipe(fds))
4826 {
ef416fc2 4827 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create pipes for CGI %s - %s",
4828 argv[0], strerror(errno));
4829 return (0);
4830 }
4831
4832 /*
4833 * Then execute the command...
4834 */
4835
4836 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
b9faaae1 4837 -1, -1, root, DefaultProfile, 0, &pid) < 0)
ef416fc2 4838 {
4839 /*
4840 * Error - can't fork!
4841 */
4842
4843 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to fork for CGI %s - %s", argv[0],
4844 strerror(errno));
4845
4846 cupsdClosePipe(fds);
4847 pid = 0;
4848 }
4849 else
4850 {
4851 /*
4852 * Fork successful - return the PID...
4853 */
4854
4855 if (con->username[0])
5bd77a73
MS		 4856#ifdef HAVE_GSSAPI
4857 cupsdAddCert(pid, con->username, ccache);
4858#else
4859 cupsdAddCert(pid, con->username, NULL);
4860#endif /* HAVE_GSSAPI */
ef416fc2 4861
355e94dc
MS		 4862 cupsdLogMessage(CUPSD_LOG_DEBUG, "[CGI] %s started - PID = %d",
4863 command, pid);
ef416fc2 4864
4865 *outfile = fds[0];
4866 close(fds[1]);
4867 }
4868
ef416fc2 4869 return (pid);
4870}
4871
4872
4873/*
a74454a7 4874 * 'write_file()' - Send a file via HTTP.
e1d6a774 4875 */
4876
4877static int /* O - 0 on failure, 1 on success */
a74454a7 4878write_file(cupsd_client_t *con, /* I - Client connection */
4879 http_status_t code, /* I - HTTP status */
4880 char *filename, /* I - Filename */
4881 char *type, /* I - File type */
4882 struct stat *filestats) /* O - File information */
e1d6a774 4883{
4884 con->file = open(filename, O_RDONLY);
4885
b9faaae1
MS		 4886 cupsdLogMessage(CUPSD_LOG_DEBUG2,
4887 "write_file(con=%p(%d), code=%d, filename=\"%s\" (%d), "
4888 "type=\"%s\", filestats=%p)", con, con->http.fd,
4889 code, filename, con->file, type ? type : "(null)", filestats);
e1d6a774 4890
4891 if (con->file < 0)
4892 return (0);
4893
4894 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
4895
4896 con->pipe_pid = 0;
4897
5bd77a73 4898 if (!cupsdSendHeader(con, code, type, CUPSD_AUTH_NONE))
e1d6a774 4899 return (0);
4900
4901 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
4902 httpGetDateString(filestats->st_mtime)) < 0)
4903 return (0);
4904 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
4905 CUPS_LLCAST filestats->st_size) < 0)
4906 return (0);
4907 if (httpPrintf(HTTP(con), "\r\n") < 0)
4908 return (0);
4909
07725fee 4910 if (cupsdFlushHeader(con) < 0)
4911 return (0);
d09495fa 4912
e1d6a774 4913 con->http.data_encoding = HTTP_ENCODE_LENGTH;
4914 con->http.data_remaining = filestats->st_size;
4915
4916 if (con->http.data_remaining <= INT_MAX)
4917 con->http._data_remaining = con->http.data_remaining;
4918 else
4919 con->http._data_remaining = INT_MAX;
4920
f7deaa1a 4921 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient,
4922 (cupsd_selfunc_t)cupsdWriteClient, con);
e1d6a774 4923
4924 return (1);
4925}
4926
4927
4928/*
f899b121 4929 * 'write_pipe()' - Flag that data is available on the CGI pipe.
4930 */
4931
4932static void
4933write_pipe(cupsd_client_t *con) /* I - Client connection */
4934{
b9faaae1
MS		 4935 cupsdLogMessage(CUPSD_LOG_DEBUG2,
4936 "write_pipe(con=%p(%d)) CGI output on fd %d",
4937 con, con->http.fd, con->file);
f899b121 4938
4939 con->file_ready = 1;
4940
4941 cupsdRemoveSelect(con->file);
4942 cupsdAddSelect(con->http.fd, NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
4943}
4944
4945
4946/*
b19ccc9e 4947 * End of "$Id: client.c 7950 2008-09-17 00:21:59Z mike $".
ef416fc2 4948 */
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