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Merge changes from CUPS trunk, r6758.
[thirdparty/cups.git] / scheduler / client.c
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ef416fc2 1/*
c24d2134 2 * "$Id: client.c 6758 2007-08-02 00:13:44Z mike $"
ef416fc2 3 *
4 * Client routines for the Common UNIX Printing System (CUPS) scheduler.
5 *
bc44d920 6 * Copyright 2007 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.
e1d6a774 31 * encrypt_client() - Enable encryption for the client...
b86bc4cf 32 * get_cdsa_certificate() - Convert a keychain name into the CFArrayRef
ef416fc2 33 * required by SSLSetCertificate.
34 * get_file() - Get a filename and state info.
35 * install_conf_file() - Install a configuration file.
e1d6a774 36 * is_cgi() - Is the resource a CGI script/program?
ef416fc2 37 * is_path_absolute() - Is a path absolute and free of relative elements.
4744bd90 38 * make_certificate() - Make a self-signed SSL/TLS certificate.
ef416fc2 39 * pipe_command() - Pipe the output of a command to the remote client.
a74454a7 40 * write_file() - Send a file via HTTP.
f899b121 41 * write_pipe() - Flag that data is available on the CGI pipe.
ef416fc2 42 */
43
44/*
45 * Include necessary headers...
46 */
47
48#include <cups/http-private.h>
49#include "cupsd.h"
50
51#ifdef HAVE_CDSASSL
52# include <Security/Security.h>
b86bc4cf 53# ifdef HAVE_SECIDENTITYSEARCHPRIV_H
54# include <Security/SecIdentitySearchPriv.h>
55# else /* Declare prototype for function in that header... */
56extern OSStatus SecIdentitySearchCreateWithPolicy(SecPolicyRef policy,
57 CFStringRef idString, CSSM_KEYUSE keyUsage,
58 CFTypeRef keychainOrArray,
59 Boolean returnOnlyValidIdentities,
60 SecIdentitySearchRef* searchRef);
61# endif /* HAVE_SECIDENTITYSEARCHPRIV_H */
62# ifdef HAVE_SECPOLICYPRIV_H
63# include <Security/SecPolicyPriv.h>
64# else /* Declare prototype for function in that header... */
65extern OSStatus SecPolicySetValue(SecPolicyRef policyRef,
66 const CSSM_DATA *value);
67# endif /* HAVE_SECPOLICYPRIV_H */
ed486911 68# ifdef HAVE_SECBASEPRIV_H
69# include <Security/SecBasePriv.h>
b86bc4cf 70# else /* Declare prototype for function in that header... */
71extern const char *cssmErrorString(int error);
ed486911 72# endif /* HAVE_SECBASEPRIV_H */
ef416fc2 73#endif /* HAVE_CDSASSL */
b86bc4cf 74
4744bd90 75#ifdef HAVE_GNUTLS
76# include <gnutls/x509.h>
77#endif /* HAVE_GNUTLS */
ef416fc2 78
79
80/*
81 * Local functions...
82 */
83
84static int check_if_modified(cupsd_client_t *con,
85 struct stat *filestats);
80ca4592 86#ifdef HAVE_SSL
e1d6a774 87static int encrypt_client(cupsd_client_t *con);
80ca4592 88#endif /* HAVE_SSL */
ef416fc2 89#ifdef HAVE_CDSASSL
b86bc4cf 90static CFArrayRef get_cdsa_certificate(cupsd_client_t *con);
ef416fc2 91#endif /* HAVE_CDSASSL */
f7deaa1a 92static char *get_file(cupsd_client_t *con, struct stat *filestats,
ef416fc2 93 char *filename, int len);
94static http_status_t install_conf_file(cupsd_client_t *con);
e1d6a774 95static int is_cgi(cupsd_client_t *con, const char *filename,
96 struct stat *filestats, mime_type_t *type);
ef416fc2 97static int is_path_absolute(const char *path);
8ca02f3c 98#ifdef HAVE_SSL
b86bc4cf 99static int make_certificate(cupsd_client_t *con);
8ca02f3c 100#endif /* HAVE_SSL */
ef416fc2 101static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
102 char *command, char *options, int root);
a74454a7 103static int write_file(cupsd_client_t *con, http_status_t code,
104 char *filename, char *type,
105 struct stat *filestats);
f899b121 106static void write_pipe(cupsd_client_t *con);
ef416fc2 107
108
109/*
110 * 'cupsdAcceptClient()' - Accept a new client.
111 */
112
113void
114cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
115{
ef416fc2 116 int count; /* Count of connections on a host */
117 int val; /* Parameter value */
bd7854cb 118 cupsd_client_t *con, /* New client pointer */
119 *tempcon; /* Temporary client pointer */
ef416fc2 120 http_addrlist_t *addrlist, /* List of adddresses for host */
121 *addr; /* Current address */
122 socklen_t addrlen; /* Length of address */
123 char *hostname; /* Hostname for address */
124 http_addr_t temp; /* Temporary address variable */
125 static time_t last_dos = 0; /* Time of last DoS attack */
126
127
128 cupsdLogMessage(CUPSD_LOG_DEBUG2,
bd7854cb 129 "cupsdAcceptClient(lis=%p) %d Clients = %d",
130 lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 131
132 /*
133 * Make sure we don't have a full set of clients already...
134 */
135
bd7854cb 136 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 137 return;
138
139 /*
140 * Get a pointer to the next available client...
141 */
142
bd7854cb 143 if (!Clients)
144 Clients = cupsArrayNew(NULL, NULL);
145
146 if (!Clients)
147 return;
148
149 con = calloc(1, sizeof(cupsd_client_t));
ef416fc2 150
ef416fc2 151 con->http.activity = time(NULL);
152 con->file = -1;
153 con->http.hostaddr = &(con->clientaddr);
154
155 /*
156 * Accept the client and get the remote address...
157 */
158
159 addrlen = sizeof(http_addr_t);
160
161 if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
162 &addrlen)) < 0)
163 {
164 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
165 strerror(errno));
bd7854cb 166 free(con);
ef416fc2 167 return;
168 }
169
170#ifdef AF_INET6
171 if (lis->address.addr.sa_family == AF_INET6)
172 {
173 /*
174 * Save the connected port number...
175 */
176
177 con->http.hostaddr->ipv6.sin6_port = lis->address.ipv6.sin6_port;
178
179 /*
180 * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
181 * can more easily use...
182 */
183
184 if (con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
185 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
186 ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
187 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
188 }
189 else
190#endif /* AF_INET6 */
191 if (lis->address.addr.sa_family == AF_INET)
192 con->http.hostaddr->ipv4.sin_port = lis->address.ipv4.sin_port;
193
194 /*
195 * Check the number of clients on the same address...
196 */
197
bd7854cb 198 for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
199 tempcon;
200 tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
201 if (httpAddrEqual(tempcon->http.hostaddr, con->http.hostaddr))
ef416fc2 202 {
203 count ++;
204 if (count >= MaxClientsPerHost)
205 break;
206 }
207
208 if (count >= MaxClientsPerHost)
209 {
210 if ((time(NULL) - last_dos) >= 60)
211 {
212 last_dos = time(NULL);
213 cupsdLogMessage(CUPSD_LOG_WARN,
bd7854cb 214 "Possible DoS attack - more than %d clients connecting "
215 "from %s!",
216 MaxClientsPerHost, tempcon->http.hostname);
ef416fc2 217 }
218
219#ifdef WIN32
220 closesocket(con->http.fd);
221#else
222 close(con->http.fd);
223#endif /* WIN32 */
224
bd7854cb 225 free(con);
ef416fc2 226 return;
227 }
228
229 /*
230 * Get the hostname or format the IP address as needed...
231 */
232
233 if (httpAddrLocalhost(con->http.hostaddr))
234 {
235 /*
236 * Map accesses from the loopback interface to "localhost"...
237 */
238
239 strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
240 hostname = con->http.hostname;
241 }
242 else
243 {
244 /*
245 * Map accesses from the same host to the server name.
246 */
247
248 for (addr = ServerAddrs; addr; addr = addr->next)
249 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
250 break;
251
252 if (addr)
253 {
254 strlcpy(con->http.hostname, ServerName, sizeof(con->http.hostname));
255 hostname = con->http.hostname;
256 }
257 else if (HostNameLookups)
258 hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
259 sizeof(con->http.hostname));
260 else
261 {
262 hostname = NULL;
263 httpAddrString(con->http.hostaddr, con->http.hostname,
264 sizeof(con->http.hostname));
265 }
266 }
267
268 if (hostname == NULL && HostNameLookups == 2)
269 {
270 /*
271 * Can't have an unresolved IP address with double-lookups enabled...
272 */
273
274 cupsdLogMessage(CUPSD_LOG_DEBUG2,
275 "cupsdAcceptClient: Closing connection %d...",
276 con->http.fd);
277
278#ifdef WIN32
279 closesocket(con->http.fd);
280#else
281 close(con->http.fd);
282#endif /* WIN32 */
283
284 cupsdLogMessage(CUPSD_LOG_WARN,
285 "Name lookup failed - connection from %s closed!",
286 con->http.hostname);
bd7854cb 287
288 free(con);
ef416fc2 289 return;
290 }
291
292 if (HostNameLookups == 2)
293 {
294 /*
295 * Do double lookups as needed...
296 */
297
298 if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL)) != NULL)
299 {
300 /*
301 * See if the hostname maps to the same IP address...
302 */
303
304 for (addr = addrlist; addr; addr = addr->next)
305 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
306 break;
307 }
308 else
309 addr = NULL;
310
311 httpAddrFreeList(addrlist);
312
313 if (!addr)
314 {
315 /*
316 * Can't have a hostname that doesn't resolve to the same IP address
317 * with double-lookups enabled...
318 */
319
320 cupsdLogMessage(CUPSD_LOG_DEBUG2,
321 "cupsdAcceptClient: Closing connection %d...",
322 con->http.fd);
323
324#ifdef WIN32
325 closesocket(con->http.fd);
326#else
327 close(con->http.fd);
328#endif /* WIN32 */
329
330 cupsdLogMessage(CUPSD_LOG_WARN,
331 "IP lookup failed - connection from %s closed!",
332 con->http.hostname);
bd7854cb 333 free(con);
ef416fc2 334 return;
335 }
336 }
337
338#ifdef AF_INET6
339 if (con->http.hostaddr->addr.sa_family == AF_INET6)
340 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv6)",
341 con->http.fd, con->http.hostname,
342 ntohs(con->http.hostaddr->ipv6.sin6_port));
343 else
344#endif /* AF_INET6 */
345#ifdef AF_LOCAL
346 if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
347 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s (Domain)",
348 con->http.fd, con->http.hostname);
349 else
350#endif /* AF_LOCAL */
351 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv4)",
352 con->http.fd, con->http.hostname,
353 ntohs(con->http.hostaddr->ipv4.sin_port));
354
355 /*
356 * Get the local address the client connected to...
357 */
358
359 addrlen = sizeof(temp);
360 if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
361 {
362 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
363 strerror(errno));
364
365 strcpy(con->servername, "localhost");
366 con->serverport = LocalPort;
367 }
368 else
369 {
370#ifdef AF_INET6
371 if (temp.addr.sa_family == AF_INET6)
372 {
373 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
374 con->serverport = ntohs(lis->address.ipv6.sin6_port);
375 }
376 else
377#endif /* AF_INET6 */
378 if (temp.addr.sa_family == AF_INET)
379 {
380 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
381 con->serverport = ntohs(lis->address.ipv4.sin_port);
382 }
383 else
384 {
385 strcpy(con->servername, "localhost");
386 con->serverport = LocalPort;
387 }
388 }
389
bd7854cb 390 cupsArrayAdd(Clients, con);
391
ef416fc2 392 cupsdLogMessage(CUPSD_LOG_DEBUG2,
393 "cupsdAcceptClient: %d connected to server on %s:%d",
394 con->http.fd, con->servername, con->serverport);
395
396 /*
397 * Using TCP_NODELAY improves responsiveness, especially on systems
398 * with a slow loopback interface... Since we write large buffers
399 * when sending print files and requests, there shouldn't be any
400 * performance penalty for this...
401 */
402
403 val = 1;
f7deaa1a 404 setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
ef416fc2 405
406 /*
407 * Close this file on all execs...
408 */
409
410 fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
411
412 /*
413 * Add the socket to the select() input mask.
414 */
415
f7deaa1a 416 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 417
ef416fc2 418 /*
419 * Temporarily suspend accept()'s until we lose a client...
420 */
421
bd7854cb 422 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 423 cupsdPauseListening();
424
425#ifdef HAVE_SSL
426 /*
427 * See if we are connecting on a secure port...
428 */
429
430 if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
431 {
432 /*
433 * https connection; go secure...
434 */
435
436 con->http.encryption = HTTP_ENCRYPT_ALWAYS;
437
411affcf 438 if (!encrypt_client(con))
439 cupsdCloseClient(con);
ef416fc2 440 }
441 else
442 con->auto_ssl = 1;
443#endif /* HAVE_SSL */
444}
445
446
447/*
448 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
449 */
450
451void
452cupsdCloseAllClients(void)
453{
bd7854cb 454 cupsd_client_t *con; /* Current client */
455
456
457 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
458 con;
459 con = (cupsd_client_t *)cupsArrayNext(Clients))
460 cupsdCloseClient(con);
ef416fc2 461}
462
463
464/*
465 * 'cupsdCloseClient()' - Close a remote client.
466 */
467
468int /* O - 1 if partial close, 0 if fully closed */
469cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
470{
471 int partial; /* Do partial close for SSL? */
472#ifdef HAVE_LIBSSL
473 SSL_CTX *context; /* Context for encryption */
474 SSL *conn; /* Connection for encryption */
475 unsigned long error; /* Error code */
476#elif defined(HAVE_GNUTLS)
89d46774 477 http_tls_t *conn; /* TLS connection information */
478 int error; /* Error code */
ef416fc2 479 gnutls_certificate_server_credentials *credentials;
480 /* TLS credentials */
89d46774 481# elif defined(HAVE_CDSASSL)
482 http_tls_t *conn; /* CDSA connection information */
ef416fc2 483#endif /* HAVE_LIBSSL */
484
485
486 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdCloseClient: %d", con->http.fd);
487
488 /*
489 * Flush pending writes before closing...
490 */
491
492 httpFlushWrite(HTTP(con));
493
494 partial = 0;
495
496#ifdef HAVE_SSL
497 /*
498 * Shutdown encryption as needed...
499 */
500
501 if (con->http.tls)
502 {
503 partial = 1;
504
505# ifdef HAVE_LIBSSL
506 conn = (SSL *)(con->http.tls);
507 context = SSL_get_SSL_CTX(conn);
508
509 switch (SSL_shutdown(conn))
510 {
511 case 1 :
512 cupsdLogMessage(CUPSD_LOG_INFO,
513 "cupsdCloseClient: SSL shutdown successful!");
514 break;
515 case -1 :
516 cupsdLogMessage(CUPSD_LOG_ERROR,
517 "cupsdCloseClient: Fatal error during SSL shutdown!");
518 default :
519 while ((error = ERR_get_error()) != 0)
520 cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdCloseClient: %s",
521 ERR_error_string(error, NULL));
522 break;
523 }
524
525 SSL_CTX_free(context);
526 SSL_free(conn);
527
528# elif defined(HAVE_GNUTLS)
529 conn = (http_tls_t *)(con->http.tls);
530 credentials = (gnutls_certificate_server_credentials *)(conn->credentials);
531
532 error = gnutls_bye(conn->session, GNUTLS_SHUT_WR);
533 switch (error)
534 {
535 case GNUTLS_E_SUCCESS:
536 cupsdLogMessage(CUPSD_LOG_INFO,
537 "cupsdCloseClient: SSL shutdown successful!");
538 break;
539 default:
540 cupsdLogMessage(CUPSD_LOG_ERROR,
541 "cupsdCloseClient: %s", gnutls_strerror(error));
542 break;
543 }
544
545 gnutls_deinit(conn->session);
546 gnutls_certificate_free_credentials(*credentials);
547 free(credentials);
548 free(conn);
549
550# elif defined(HAVE_CDSASSL)
89d46774 551 conn = (http_tls_t *)(con->http.tls);
552
553 while (SSLClose(conn->session) == errSSLWouldBlock)
b423cd4c 554 usleep(1000);
555
89d46774 556 SSLDisposeContext(conn->session);
557
558 if (conn->certsArray)
559 CFRelease(conn->certsArray);
560
561 free(conn);
ef416fc2 562# endif /* HAVE_LIBSSL */
563
564 con->http.tls = NULL;
565 }
566#endif /* HAVE_SSL */
567
568 if (con->pipe_pid != 0)
569 {
570 /*
571 * Stop any CGI process...
572 */
573
574 cupsdLogMessage(CUPSD_LOG_DEBUG2,
575 "cupsdCloseClient: %d Killing process ID %d...",
576 con->http.fd, con->pipe_pid);
577 cupsdEndProcess(con->pipe_pid, 1);
578 con->pipe_pid = 0;
579 }
580
581 if (con->file >= 0)
582 {
f7deaa1a 583 cupsdRemoveSelect(con->file);
ef416fc2 584
585 cupsdLogMessage(CUPSD_LOG_DEBUG2,
586 "cupsdCloseClient: %d Closing data file %d.",
587 con->http.fd, con->file);
588
589 close(con->file);
590 con->file = -1;
591 }
592
593 /*
594 * Close the socket and clear the file from the input set for select()...
595 */
596
597 if (con->http.fd > 0)
598 {
599 if (partial)
600 {
601 /*
602 * Only do a partial close so that the encrypted client gets everything.
603 */
604
ef416fc2 605 shutdown(con->http.fd, 0);
f7deaa1a 606 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 607 }
608 else
609 {
610 /*
611 * Shut the socket down fully...
612 */
613
f7deaa1a 614 cupsdRemoveSelect(con->http.fd);
ef416fc2 615 close(con->http.fd);
ef416fc2 616 con->http.fd = -1;
617 }
618 }
619
620 if (!partial)
621 {
622 /*
623 * Free memory...
624 */
625
626 if (con->http.input_set)
627 free(con->http.input_set);
628
629 httpClearCookie(HTTP(con));
630
631 cupsdClearString(&con->filename);
632 cupsdClearString(&con->command);
633 cupsdClearString(&con->options);
b86bc4cf 634 cupsdClearString(&con->query_string);
ef416fc2 635
636 if (con->request)
637 {
638 ippDelete(con->request);
639 con->request = NULL;
640 }
641
642 if (con->response)
643 {
644 ippDelete(con->response);
645 con->response = NULL;
646 }
647
648 if (con->language)
649 {
650 cupsLangFree(con->language);
651 con->language = NULL;
652 }
653
f7deaa1a 654#ifdef HAVE_AUTHORIZATION_H
655 if (con->authref)
656 {
657 AuthorizationFree(con->authref, kAuthorizationFlagDefaults);
658 con->authref = NULL;
659 }
660#endif /* HAVE_AUTHORIZATION_H */
661
ef416fc2 662 /*
663 * Re-enable new client connections if we are going back under the
664 * limit...
665 */
666
bd7854cb 667 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 668 cupsdResumeListening();
669
670 /*
671 * Compact the list of clients as necessary...
672 */
673
bd7854cb 674 cupsArrayRemove(Clients, con);
ef416fc2 675
bd7854cb 676 free(con);
ef416fc2 677 }
678
679 return (partial);
680}
681
682
d09495fa 683/*
684 * 'cupsdFlushHeader()' - Flush the header fields to the client.
685 */
686
07725fee 687int /* I - Bytes written or -1 on error */
d09495fa 688cupsdFlushHeader(cupsd_client_t *con) /* I - Client to flush to */
689{
07725fee 690 int bytes = httpFlushWrite(HTTP(con));
d09495fa 691
692 con->http.data_encoding = HTTP_ENCODE_LENGTH;
07725fee 693
694 return (bytes);
d09495fa 695}
696
697
ef416fc2 698/*
699 * 'cupsdReadClient()' - Read data from a client.
700 */
701
f7deaa1a 702void
ef416fc2 703cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
704{
705 char line[32768], /* Line from client... */
706 operation[64], /* Operation code from socket */
707 version[64], /* HTTP version number string */
708 locale[64], /* Locale */
709 *ptr; /* Pointer into strings */
710 int major, minor; /* HTTP version numbers */
711 http_status_t status; /* Transfer status */
712 ipp_state_t ipp_state; /* State of IPP transfer */
713 int bytes; /* Number of bytes to POST */
714 char *filename; /* Name of file for GET/HEAD */
715 char buf[1024]; /* Buffer for real filename */
716 struct stat filestats; /* File information */
717 mime_type_t *type; /* MIME type of file */
718 cupsd_printer_t *p; /* Printer */
719 static unsigned request_id = 0; /* Request ID for temp files */
720
721
722 status = HTTP_CONTINUE;
723
724 cupsdLogMessage(CUPSD_LOG_DEBUG2,
725 "cupsdReadClient: %d, used=%d, file=%d state=%d",
726 con->http.fd, con->http.used, con->file, con->http.state);
727
728 if (con->http.error)
729 {
730 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: http error seen...");
f7deaa1a 731 cupsdCloseClient(con);
732 return;
ef416fc2 733 }
734
735#ifdef HAVE_SSL
736 if (con->auto_ssl)
737 {
738 /*
739 * Automatically check for a SSL/TLS handshake...
740 */
741
742 con->auto_ssl = 0;
743
744 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
745 (!buf[0] || !strchr("DGHOPT", buf[0])))
746 {
747 /*
748 * Encrypt this connection...
749 */
750
751 cupsdLogMessage(CUPSD_LOG_DEBUG2,
752 "cupsdReadClient: Saw first byte %02X, auto-negotiating SSL/TLS session...",
753 buf[0] & 255);
754
411affcf 755 if (!encrypt_client(con))
f7deaa1a 756 cupsdCloseClient(con);
411affcf 757
f7deaa1a 758 return;
ef416fc2 759 }
760 }
761#endif /* HAVE_SSL */
762
763 switch (con->http.state)
764 {
765 case HTTP_WAITING :
766 /*
767 * See if we've received a request line...
768 */
769
770 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
771 {
772 cupsdLogMessage(CUPSD_LOG_DEBUG2,
773 "cupsdReadClient: httpGets returned EOF...");
f7deaa1a 774 cupsdCloseClient(con);
775 return;
ef416fc2 776 }
777
778 /*
779 * Ignore blank request lines...
780 */
781
782 if (line[0] == '\0')
783 break;
784
785 /*
786 * Clear other state variables...
787 */
788
789 httpClearFields(HTTP(con));
790
791 con->http.activity = time(NULL);
792 con->http.version = HTTP_1_0;
793 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
794 con->http.data_encoding = HTTP_ENCODE_LENGTH;
795 con->http.data_remaining = 0;
796 con->http._data_remaining = 0;
797 con->operation = HTTP_WAITING;
798 con->bytes = 0;
799 con->file = -1;
800 con->file_ready = 0;
801 con->pipe_pid = 0;
802 con->username[0] = '\0';
803 con->password[0] = '\0';
804 con->uri[0] = '\0';
805
806 cupsdClearString(&con->command);
807 cupsdClearString(&con->options);
b86bc4cf 808 cupsdClearString(&con->query_string);
ef416fc2 809
2abf387c 810 if (con->request)
811 {
812 ippDelete(con->request);
813 con->request = NULL;
814 }
815
816 if (con->response)
817 {
818 ippDelete(con->response);
819 con->response = NULL;
820 }
821
822 if (con->language)
ef416fc2 823 {
824 cupsLangFree(con->language);
825 con->language = NULL;
826 }
827
09a101d6 828#ifdef HAVE_GSSAPI
829 con->gss_have_creds = 0;
830#endif /* HAVE_GSSAPI */
831
ef416fc2 832 /*
833 * Grab the request line...
834 */
835
836 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
837 {
838 case 1 :
839 cupsdLogMessage(CUPSD_LOG_ERROR,
840 "Bad request line \"%s\" from %s!", line,
841 con->http.hostname);
f899b121 842 cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE);
f7deaa1a 843 cupsdCloseClient(con);
844 return;
ef416fc2 845 case 2 :
846 con->http.version = HTTP_0_9;
847 break;
848 case 3 :
849 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
850 {
851 cupsdLogMessage(CUPSD_LOG_ERROR,
852 "Bad request line \"%s\" from %s!", line,
853 con->http.hostname);
f899b121 854 cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE);
f7deaa1a 855 cupsdCloseClient(con);
856 return;
ef416fc2 857 }
858
859 if (major < 2)
860 {
861 con->http.version = (http_version_t)(major * 100 + minor);
862 if (con->http.version == HTTP_1_1 && KeepAlive)
863 con->http.keep_alive = HTTP_KEEPALIVE_ON;
864 else
865 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
866 }
867 else
868 {
f899b121 869 cupsdSendError(con, HTTP_NOT_SUPPORTED, AUTH_NONE);
f7deaa1a 870 cupsdCloseClient(con);
871 return;
ef416fc2 872 }
873 break;
874 }
875
876 /*
877 * Handle full URLs in the request line...
878 */
879
880 if (strcmp(con->uri, "*"))
881 {
882 char method[HTTP_MAX_URI], /* Method/scheme */
883 userpass[HTTP_MAX_URI], /* Username:password */
884 hostname[HTTP_MAX_URI], /* Hostname */
885 resource[HTTP_MAX_URI]; /* Resource path */
886 int port; /* Port number */
887
888
889 /*
890 * Separate the URI into its components...
891 */
892
a4d04587 893 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
894 method, sizeof(method),
ef416fc2 895 userpass, sizeof(userpass),
896 hostname, sizeof(hostname), &port,
897 resource, sizeof(resource));
898
899 /*
900 * Only allow URIs with the servername, localhost, or an IP
901 * address...
902 */
903
904 if (strcmp(method, "file") &&
905 strcasecmp(hostname, ServerName) &&
906 strcasecmp(hostname, "localhost") &&
907 !isdigit(hostname[0]))
908 {
909 /*
910 * Nope, we don't do proxies...
911 */
912
913 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad URI \"%s\" in request!",
914 con->uri);
f899b121 915 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED, AUTH_NONE);
f7deaa1a 916 cupsdCloseClient(con);
917 return;
ef416fc2 918 }
919
920 /*
921 * Copy the resource portion back into the URI; both resource and
922 * con->uri are HTTP_MAX_URI bytes in size...
923 */
924
925 strcpy(con->uri, resource);
926 }
927
928 /*
929 * Process the request...
930 */
931
932 if (!strcmp(operation, "GET"))
933 con->http.state = HTTP_GET;
934 else if (!strcmp(operation, "PUT"))
935 con->http.state = HTTP_PUT;
936 else if (!strcmp(operation, "POST"))
937 con->http.state = HTTP_POST;
938 else if (!strcmp(operation, "DELETE"))
939 con->http.state = HTTP_DELETE;
940 else if (!strcmp(operation, "TRACE"))
941 con->http.state = HTTP_TRACE;
942 else if (!strcmp(operation, "OPTIONS"))
943 con->http.state = HTTP_OPTIONS;
944 else if (!strcmp(operation, "HEAD"))
945 con->http.state = HTTP_HEAD;
946 else
947 {
948 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad operation \"%s\"!", operation);
f899b121 949 cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE);
f7deaa1a 950 cupsdCloseClient(con);
951 return;
ef416fc2 952 }
953
954 con->start = time(NULL);
955 con->operation = con->http.state;
956
89d46774 957 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %s %s HTTP/%d.%d",
958 con->http.fd, operation, con->uri,
ef416fc2 959 con->http.version / 100, con->http.version % 100);
960
961 con->http.status = HTTP_OK;
962
963 case HTTP_OPTIONS :
964 case HTTP_DELETE :
965 case HTTP_GET :
966 case HTTP_HEAD :
967 case HTTP_POST :
968 case HTTP_PUT :
969 case HTTP_TRACE :
970 /*
971 * Parse incoming parameters until the status changes...
972 */
973
f7deaa1a 974 while ((status = httpUpdate(HTTP(con))) == HTTP_CONTINUE)
975 if (con->http.used == 0 ||
976 !memchr(con->http.buffer, '\n', con->http.used))
977 break;
ef416fc2 978
979 if (status != HTTP_OK && status != HTTP_CONTINUE)
980 {
f899b121 981 cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE);
f7deaa1a 982 cupsdCloseClient(con);
983 return;
ef416fc2 984 }
985 break;
986
987 default :
988 break; /* Anti-compiler-warning-code */
989 }
990
991 /*
992 * Handle new transfers...
993 */
994
995 if (status == HTTP_OK)
996 {
997 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
998 {
999 /*
1000 * Figure out the locale from the Accept-Language and Content-Type
1001 * fields...
1002 */
1003
1004 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ',')) != NULL)
1005 *ptr = '\0';
1006
1007 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ';')) != NULL)
1008 *ptr = '\0';
1009
1010 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE], "charset=")) != NULL)
1011 {
1012 /*
1013 * Combine language and charset, and trim any extra params in the
1014 * content-type.
1015 */
1016
1017 snprintf(locale, sizeof(locale), "%s.%s",
1018 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
1019
1020 if ((ptr = strchr(locale, ',')) != NULL)
1021 *ptr = '\0';
1022 }
1023 else
1024 snprintf(locale, sizeof(locale), "%s.%s",
1025 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], DefaultCharset);
d6ae789d 1026
355e94dc 1027 cupsdLogMessage(CUPSD_LOG_DEBUG2,
89d46774 1028 "cupsdReadClient: %d Browser asked for language \"%s\"...",
1029 con->http.fd, locale);
1030
ef416fc2 1031 con->language = cupsLangGet(locale);
1032 }
1033 else
1034 con->language = cupsLangGet(DefaultLocale);
1035
1036 cupsdAuthorize(con);
1037
1038 if (!strncmp(con->http.fields[HTTP_FIELD_CONNECTION], "Keep-Alive", 10) &&
1039 KeepAlive)
1040 con->http.keep_alive = HTTP_KEEPALIVE_ON;
1041
1042 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
1043 con->http.version >= HTTP_1_1)
1044 {
1045 /*
1046 * HTTP/1.1 and higher require the "Host:" field...
1047 */
1048
f899b121 1049 if (!cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE))
f7deaa1a 1050 {
1051 cupsdCloseClient(con);
1052 return;
1053 }
ef416fc2 1054 }
1055 else if (con->operation == HTTP_OPTIONS)
1056 {
1057 /*
1058 * Do OPTIONS command...
1059 */
1060
1061 if (con->best && con->best->type != AUTH_NONE)
1062 {
f899b121 1063 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL, AUTH_NONE))
f7deaa1a 1064 {
1065 cupsdCloseClient(con);
1066 return;
1067 }
ef416fc2 1068 }
1069
1070 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1071 con->http.tls == NULL)
1072 {
1073#ifdef HAVE_SSL
1074 /*
1075 * Do encryption stuff...
1076 */
1077
f899b121 1078 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, AUTH_NONE))
f7deaa1a 1079 {
1080 cupsdCloseClient(con);
1081 return;
1082 }
ef416fc2 1083
1084 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1085 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1086 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1087 httpPrintf(HTTP(con), "\r\n");
07725fee 1088
1089 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1090 {
1091 cupsdCloseClient(con);
1092 return;
1093 }
ef416fc2 1094
411affcf 1095 if (!encrypt_client(con))
f7deaa1a 1096 {
1097 cupsdCloseClient(con);
1098 return;
1099 }
ef416fc2 1100#else
f899b121 1101 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, AUTH_NONE))
f7deaa1a 1102 {
1103 cupsdCloseClient(con);
1104 return;
1105 }
ef416fc2 1106#endif /* HAVE_SSL */
1107 }
1108
f899b121 1109 if (!cupsdSendHeader(con, HTTP_OK, NULL, AUTH_NONE))
f7deaa1a 1110 {
1111 cupsdCloseClient(con);
1112 return;
1113 }
ef416fc2 1114
1115 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1116 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1117 httpPrintf(HTTP(con), "\r\n");
07725fee 1118
1119 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1120 {
1121 cupsdCloseClient(con);
1122 return;
1123 }
ef416fc2 1124 }
1125 else if (!is_path_absolute(con->uri))
1126 {
1127 /*
1128 * Protect against malicious users!
1129 */
1130
f899b121 1131 if (!cupsdSendError(con, HTTP_FORBIDDEN, AUTH_NONE))
f7deaa1a 1132 {
1133 cupsdCloseClient(con);
1134 return;
1135 }
ef416fc2 1136 }
1137 else
1138 {
1139 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1140 con->http.tls == NULL)
1141 {
1142#ifdef HAVE_SSL
1143 /*
1144 * Do encryption stuff...
1145 */
1146
f899b121 1147 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, AUTH_NONE))
f7deaa1a 1148 {
1149 cupsdCloseClient(con);
1150 return;
1151 }
ef416fc2 1152
1153 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1154 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1155 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1156 httpPrintf(HTTP(con), "\r\n");
07725fee 1157
1158 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1159 {
1160 cupsdCloseClient(con);
1161 return;
1162 }
ef416fc2 1163
411affcf 1164 if (!encrypt_client(con))
f7deaa1a 1165 {
1166 cupsdCloseClient(con);
1167 return;
1168 }
ef416fc2 1169#else
f899b121 1170 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, AUTH_NONE))
f7deaa1a 1171 {
1172 cupsdCloseClient(con);
1173 return;
1174 }
ef416fc2 1175#endif /* HAVE_SSL */
1176 }
1177
1178 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1179 {
1180 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1181 "cupsdReadClient: Unauthorized request for %s...\n",
1182 con->uri);
f899b121 1183 cupsdSendError(con, status, AUTH_NONE);
f7deaa1a 1184 cupsdCloseClient(con);
1185 return;
ef416fc2 1186 }
1187
b423cd4c 1188 if (con->http.expect &&
1189 (con->operation == HTTP_POST || con->operation == HTTP_PUT))
ef416fc2 1190 {
b423cd4c 1191 if (con->http.expect == HTTP_CONTINUE)
1192 {
1193 /*
1194 * Send 100-continue header...
1195 */
1196
f899b121 1197 if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL, AUTH_NONE))
f7deaa1a 1198 {
1199 cupsdCloseClient(con);
1200 return;
1201 }
b423cd4c 1202 }
1203 else
1204 {
1205 /*
1206 * Send 417-expectation-failed header...
1207 */
1208
f899b121 1209 if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL, AUTH_NONE))
f7deaa1a 1210 {
1211 cupsdCloseClient(con);
1212 return;
1213 }
b423cd4c 1214
1215 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1216 httpPrintf(HTTP(con), "\r\n");
07725fee 1217
1218 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1219 {
1220 cupsdCloseClient(con);
1221 return;
1222 }
b423cd4c 1223 }
ef416fc2 1224 }
1225
1226 switch (con->http.state)
1227 {
1228 case HTTP_GET_SEND :
1229 if (!strncmp(con->uri, "/printers/", 10) &&
1230 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1231 {
1232 /*
1233 * Send PPD file - get the real printer name since printer
1234 * names are not case sensitive but filenames can be...
1235 */
1236
1237 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1238
1239 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1240 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1241 else
1242 {
f899b121 1243 if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
f7deaa1a 1244 {
1245 cupsdCloseClient(con);
1246 return;
1247 }
ef416fc2 1248
1249 break;
1250 }
1251 }
1252
1253 if ((!strncmp(con->uri, "/admin", 6) &&
1254 strncmp(con->uri, "/admin/conf/", 12) &&
1255 strncmp(con->uri, "/admin/log/", 11)) ||
1256 !strncmp(con->uri, "/printers", 9) ||
1257 !strncmp(con->uri, "/classes", 8) ||
1258 !strncmp(con->uri, "/help", 5) ||
1259 !strncmp(con->uri, "/jobs", 5))
1260 {
1261 /*
1262 * Send CGI output...
1263 */
1264
1265 if (!strncmp(con->uri, "/admin", 6))
1266 {
1267 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1268 ServerBin);
1269
b423cd4c 1270 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1271 }
1272 else if (!strncmp(con->uri, "/printers", 9))
1273 {
1274 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1275 ServerBin);
b423cd4c 1276
1277 if (con->uri[9] && con->uri[10])
1278 cupsdSetString(&con->options, con->uri + 9);
1279 else
1280 cupsdSetString(&con->options, NULL);
ef416fc2 1281 }
1282 else if (!strncmp(con->uri, "/classes", 8))
1283 {
1284 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1285 ServerBin);
b423cd4c 1286
1287 if (con->uri[8] && con->uri[9])
1288 cupsdSetString(&con->options, con->uri + 8);
1289 else
1290 cupsdSetString(&con->options, NULL);
ef416fc2 1291 }
1292 else if (!strncmp(con->uri, "/jobs", 5))
1293 {
1294 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1295 ServerBin);
b423cd4c 1296
1297 if (con->uri[5] && con->uri[6])
1298 cupsdSetString(&con->options, con->uri + 5);
1299 else
1300 cupsdSetString(&con->options, NULL);
ef416fc2 1301 }
1302 else
1303 {
1304 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1305 ServerBin);
ef416fc2 1306
b423cd4c 1307 if (con->uri[5] && con->uri[6])
1308 cupsdSetString(&con->options, con->uri + 5);
1309 else
1310 cupsdSetString(&con->options, NULL);
1311 }
ef416fc2 1312
1313 if (!cupsdSendCommand(con, con->command, con->options, 0))
1314 {
f899b121 1315 if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
f7deaa1a 1316 {
1317 cupsdCloseClient(con);
1318 return;
1319 }
ef416fc2 1320 }
1321 else
1322 cupsdLogRequest(con, HTTP_OK);
1323
1324 if (con->http.version <= HTTP_1_0)
1325 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1326 }
1327 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1328 (strchr(con->uri + 12, '/') ||
1329 strlen(con->uri) == 12)) ||
1330 (!strncmp(con->uri, "/admin/log/", 11) &&
1331 (strchr(con->uri + 11, '/') ||
1332 strlen(con->uri) == 11)))
1333 {
1334 /*
1335 * GET can only be done to configuration files under
1336 * /admin/conf...
1337 */
1338
f899b121 1339 if (!cupsdSendError(con, HTTP_FORBIDDEN, AUTH_NONE))
f7deaa1a 1340 {
1341 cupsdCloseClient(con);
1342 return;
1343 }
ef416fc2 1344
1345 break;
1346 }
1347 else
1348 {
1349 /*
1350 * Serve a file...
1351 */
1352
1353 if ((filename = get_file(con, &filestats, buf,
1354 sizeof(buf))) == NULL)
1355 {
f899b121 1356 if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
f7deaa1a 1357 {
1358 cupsdCloseClient(con);
1359 return;
1360 }
ef416fc2 1361
1362 break;
1363 }
1364
4400e98d 1365 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1366
e1d6a774 1367 if (is_cgi(con, filename, &filestats, type))
ef416fc2 1368 {
1369 /*
1370 * Note: con->command and con->options were set by
e1d6a774 1371 * is_cgi()...
ef416fc2 1372 */
1373
1374 if (!cupsdSendCommand(con, con->command, con->options, 0))
1375 {
f899b121 1376 if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
f7deaa1a 1377 {
1378 cupsdCloseClient(con);
1379 return;
1380 }
ef416fc2 1381 }
1382 else
1383 cupsdLogRequest(con, HTTP_OK);
1384
1385 if (con->http.version <= HTTP_1_0)
1386 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1387 break;
1388 }
1389
1390 if (!check_if_modified(con, &filestats))
1391 {
f899b121 1392 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, AUTH_NONE))
f7deaa1a 1393 {
1394 cupsdCloseClient(con);
1395 return;
1396 }
ef416fc2 1397 }
1398 else
1399 {
1400 if (type == NULL)
1401 strcpy(line, "text/plain");
1402 else
1403 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1404
a74454a7 1405 if (!write_file(con, HTTP_OK, filename, line, &filestats))
f7deaa1a 1406 {
1407 cupsdCloseClient(con);
1408 return;
1409 }
ef416fc2 1410 }
1411 }
1412 break;
1413
1414 case HTTP_POST_RECV :
1415 /*
1416 * See if the POST request includes a Content-Length field, and if
1417 * so check the length against any limits that are set...
1418 */
1419
1420 cupsdLogMessage(CUPSD_LOG_DEBUG2, "POST %s", con->uri);
1421 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1422 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1423
1424 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1425 MaxRequestSize > 0 &&
1426 con->http.data_remaining > MaxRequestSize)
1427 {
1428 /*
1429 * Request too large...
1430 */
1431
f899b121 1432 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
f7deaa1a 1433 {
1434 cupsdCloseClient(con);
1435 return;
1436 }
ef416fc2 1437
1438 break;
1439 }
1440 else if (con->http.data_remaining < 0)
1441 {
1442 /*
1443 * Negative content lengths are invalid!
1444 */
1445
f899b121 1446 if (!cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE))
f7deaa1a 1447 {
1448 cupsdCloseClient(con);
1449 return;
1450 }
ef416fc2 1451
1452 break;
1453 }
1454
1455 /*
1456 * See what kind of POST request this is; for IPP requests the
1457 * content-type field will be "application/ipp"...
1458 */
1459
1460 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1461 "application/ipp"))
1462 con->request = ippNew();
1463 else if ((!strncmp(con->uri, "/admin", 6) &&
1464 strncmp(con->uri, "/admin/conf/", 12) &&
1465 strncmp(con->uri, "/admin/log/", 11)) ||
1466 !strncmp(con->uri, "/printers", 9) ||
1467 !strncmp(con->uri, "/classes", 8) ||
1468 !strncmp(con->uri, "/help", 5) ||
1469 !strncmp(con->uri, "/jobs", 5))
1470 {
1471 /*
1472 * CGI request...
1473 */
1474
1475 if (!strncmp(con->uri, "/admin", 6))
1476 {
1477 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1478 ServerBin);
1479
b423cd4c 1480 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1481 }
1482 else if (!strncmp(con->uri, "/printers", 9))
1483 {
1484 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1485 ServerBin);
b423cd4c 1486
1487 if (con->uri[9] && con->uri[10])
1488 cupsdSetString(&con->options, con->uri + 9);
1489 else
1490 cupsdSetString(&con->options, NULL);
ef416fc2 1491 }
1492 else if (!strncmp(con->uri, "/classes", 8))
1493 {
1494 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1495 ServerBin);
b423cd4c 1496
1497 if (con->uri[8] && con->uri[9])
1498 cupsdSetString(&con->options, con->uri + 8);
1499 else
1500 cupsdSetString(&con->options, NULL);
ef416fc2 1501 }
1502 else if (!strncmp(con->uri, "/jobs", 5))
1503 {
1504 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1505 ServerBin);
b423cd4c 1506
1507 if (con->uri[5] && con->uri[6])
1508 cupsdSetString(&con->options, con->uri + 5);
1509 else
1510 cupsdSetString(&con->options, NULL);
ef416fc2 1511 }
1512 else
1513 {
1514 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1515 ServerBin);
ef416fc2 1516
b423cd4c 1517 if (con->uri[5] && con->uri[6])
1518 cupsdSetString(&con->options, con->uri + 5);
1519 else
1520 cupsdSetString(&con->options, NULL);
1521 }
ef416fc2 1522
1523 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b423cd4c 1524 "cupsdReadClient: %d command=\"%s\", "
1525 "options = \"%s\"",
f301802f 1526 con->http.fd, con->command,
1527 con->options ? con->options : "(null)");
ef416fc2 1528
1529 if (con->http.version <= HTTP_1_0)
1530 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1531 }
1532 else
1533 {
1534 /*
1535 * POST to a file...
1536 */
1537
1538 if ((filename = get_file(con, &filestats, buf,
1539 sizeof(buf))) == NULL)
1540 {
f899b121 1541 if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
f7deaa1a 1542 {
1543 cupsdCloseClient(con);
1544 return;
1545 }
ef416fc2 1546
1547 break;
1548 }
1549
4400e98d 1550 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1551
e1d6a774 1552 if (!is_cgi(con, filename, &filestats, type))
ef416fc2 1553 {
1554 /*
1555 * Only POST to CGI's...
1556 */
1557
f899b121 1558 if (!cupsdSendError(con, HTTP_UNAUTHORIZED, AUTH_NONE))
f7deaa1a 1559 {
1560 cupsdCloseClient(con);
1561 return;
1562 }
ef416fc2 1563 }
1564 }
1565 break;
1566
1567 case HTTP_PUT_RECV :
1568 /*
1569 * Validate the resource name...
1570 */
1571
1572 if (strncmp(con->uri, "/admin/conf/", 12) ||
1573 strchr(con->uri + 12, '/') ||
1574 strlen(con->uri) == 12)
1575 {
1576 /*
1577 * PUT can only be done to configuration files under
1578 * /admin/conf...
1579 */
1580
f899b121 1581 if (!cupsdSendError(con, HTTP_FORBIDDEN, AUTH_NONE))
f7deaa1a 1582 {
1583 cupsdCloseClient(con);
1584 return;
1585 }
ef416fc2 1586
1587 break;
1588 }
1589
1590 /*
1591 * See if the PUT request includes a Content-Length field, and if
1592 * so check the length against any limits that are set...
1593 */
1594
1595 cupsdLogMessage(CUPSD_LOG_DEBUG2, "PUT %s", con->uri);
1596 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1597 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1598
1599 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1600 MaxRequestSize > 0 &&
1601 con->http.data_remaining > MaxRequestSize)
1602 {
1603 /*
1604 * Request too large...
1605 */
1606
f899b121 1607 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
f7deaa1a 1608 {
1609 cupsdCloseClient(con);
1610 return;
1611 }
ef416fc2 1612
1613 break;
1614 }
1615 else if (con->http.data_remaining < 0)
1616 {
1617 /*
1618 * Negative content lengths are invalid!
1619 */
1620
f899b121 1621 if (!cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE))
f7deaa1a 1622 {
1623 cupsdCloseClient(con);
1624 return;
1625 }
ef416fc2 1626
1627 break;
1628 }
1629
1630 /*
1631 * Open a temporary file to hold the request...
1632 */
1633
1634 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1635 request_id ++);
1636 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1637
1638 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1639 "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1640 con->filename, con->file);
1641
1642 if (con->file < 0)
1643 {
f899b121 1644 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
f7deaa1a 1645 {
1646 cupsdCloseClient(con);
1647 return;
1648 }
ef416fc2 1649 }
1650
1651 fchmod(con->file, 0640);
1652 fchown(con->file, RunUser, Group);
1653 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1654 break;
1655
1656 case HTTP_DELETE :
1657 case HTTP_TRACE :
f899b121 1658 cupsdSendError(con, HTTP_NOT_IMPLEMENTED, AUTH_NONE);
f7deaa1a 1659 cupsdCloseClient(con);
1660 return;
ef416fc2 1661
1662 case HTTP_HEAD :
1663 if (!strncmp(con->uri, "/printers/", 10) &&
1664 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1665 {
1666 /*
1667 * Send PPD file - get the real printer name since printer
1668 * names are not case sensitive but filenames can be...
1669 */
1670
1671 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1672
1673 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1674 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1675 else
1676 {
f899b121 1677 if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
f7deaa1a 1678 {
1679 cupsdCloseClient(con);
1680 return;
1681 }
ef416fc2 1682
1683 break;
1684 }
1685 }
1686
1687 if ((!strncmp(con->uri, "/admin", 6) &&
1688 strncmp(con->uri, "/admin/conf/", 12) &&
1689 strncmp(con->uri, "/admin/log/", 11)) ||
1690 !strncmp(con->uri, "/printers", 9) ||
1691 !strncmp(con->uri, "/classes", 8) ||
1692 !strncmp(con->uri, "/help", 5) ||
1693 !strncmp(con->uri, "/jobs", 5))
1694 {
1695 /*
1696 * CGI output...
1697 */
1698
f899b121 1699 if (!cupsdSendHeader(con, HTTP_OK, "text/html", AUTH_NONE))
f7deaa1a 1700 {
1701 cupsdCloseClient(con);
1702 return;
1703 }
ef416fc2 1704
1705 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 1706 {
1707 cupsdCloseClient(con);
1708 return;
1709 }
ef416fc2 1710
07725fee 1711 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1712 {
1713 cupsdCloseClient(con);
1714 return;
1715 }
d09495fa 1716
ef416fc2 1717 cupsdLogRequest(con, HTTP_OK);
1718 }
1719 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1720 (strchr(con->uri + 12, '/') ||
1721 strlen(con->uri) == 12)) ||
1722 (!strncmp(con->uri, "/admin/log/", 11) &&
1723 (strchr(con->uri + 11, '/') ||
1724 strlen(con->uri) == 11)))
1725 {
1726 /*
1727 * HEAD can only be done to configuration files under
1728 * /admin/conf...
1729 */
1730
f899b121 1731 if (!cupsdSendError(con, HTTP_FORBIDDEN, AUTH_NONE))
f7deaa1a 1732 {
1733 cupsdCloseClient(con);
1734 return;
1735 }
ef416fc2 1736
1737 break;
1738 }
1739 else if ((filename = get_file(con, &filestats, buf,
1740 sizeof(buf))) == NULL)
1741 {
f899b121 1742 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html", AUTH_NONE))
f7deaa1a 1743 {
1744 cupsdCloseClient(con);
1745 return;
1746 }
ef416fc2 1747
1748 cupsdLogRequest(con, HTTP_NOT_FOUND);
1749 }
1750 else if (!check_if_modified(con, &filestats))
1751 {
f899b121 1752 if (!cupsdSendError(con, HTTP_NOT_MODIFIED, AUTH_NONE))
f7deaa1a 1753 {
1754 cupsdCloseClient(con);
1755 return;
1756 }
ef416fc2 1757
1758 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
1759 }
1760 else
1761 {
1762 /*
1763 * Serve a file...
1764 */
1765
4400e98d 1766 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1767 if (type == NULL)
1768 strcpy(line, "text/plain");
1769 else
1770 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1771
f899b121 1772 if (!cupsdSendHeader(con, HTTP_OK, line, AUTH_NONE))
f7deaa1a 1773 {
1774 cupsdCloseClient(con);
1775 return;
1776 }
ef416fc2 1777
1778 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
1779 httpGetDateString(filestats.st_mtime)) < 0)
f7deaa1a 1780 {
1781 cupsdCloseClient(con);
1782 return;
1783 }
ef416fc2 1784
1785 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
1786 (unsigned long)filestats.st_size) < 0)
f7deaa1a 1787 {
1788 cupsdCloseClient(con);
1789 return;
1790 }
ef416fc2 1791
1792 cupsdLogRequest(con, HTTP_OK);
1793 }
1794
1795 if (httpPrintf(HTTP(con), "\r\n") < 0)
f7deaa1a 1796 {
1797 cupsdCloseClient(con);
1798 return;
1799 }
ef416fc2 1800
07725fee 1801 if (cupsdFlushHeader(con) < 0)
f7deaa1a 1802 {
1803 cupsdCloseClient(con);
1804 return;
1805 }
d09495fa 1806
ef416fc2 1807 con->http.state = HTTP_WAITING;
1808 break;
1809
1810 default :
1811 break; /* Anti-compiler-warning-code */
1812 }
1813 }
1814 }
1815
1816 /*
1817 * Handle any incoming data...
1818 */
1819
1820 switch (con->http.state)
1821 {
1822 case HTTP_PUT_RECV :
1823 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1824 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_%s, "
1825 "con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1826 con->http.fd,
1827 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1828 "CHUNKED" : "LENGTH",
1829 CUPS_LLCAST con->http.data_remaining, con->file);
1830
f7deaa1a 1831 do
ef416fc2 1832 {
f7deaa1a 1833 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
1834 {
1835 cupsdCloseClient(con);
1836 return;
1837 }
1838 else if (bytes > 0)
1839 {
1840 con->bytes += bytes;
ef416fc2 1841
f7deaa1a 1842 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1843 "cupsdReadClient: %d writing %d bytes to %d",
1844 con->http.fd, bytes, con->file);
ef416fc2 1845
f7deaa1a 1846 if (write(con->file, line, bytes) < bytes)
1847 {
1848 cupsdLogMessage(CUPSD_LOG_ERROR,
1849 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1850 bytes, con->filename, strerror(errno));
ef416fc2 1851
f7deaa1a 1852 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1853 "cupsdReadClient: Closing data file %d...",
1854 con->file);
ef416fc2 1855
f7deaa1a 1856 close(con->file);
1857 con->file = -1;
1858 unlink(con->filename);
1859 cupsdClearString(&con->filename);
ef416fc2 1860
f899b121 1861 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
f7deaa1a 1862 {
1863 cupsdCloseClient(con);
1864 return;
1865 }
1866 }
ef416fc2 1867 }
f7deaa1a 1868 }
1869 while (con->http.state == HTTP_PUT_RECV && con->http.used > 0);
ef416fc2 1870
1871 if (con->http.state == HTTP_WAITING)
1872 {
1873 /*
1874 * End of file, see how big it is...
1875 */
1876
1877 fstat(con->file, &filestats);
1878
1879 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1880 "cupsdReadClient: %d Closing data file %d, size="
1881 CUPS_LLFMT ".",
1882 con->http.fd, con->file,
1883 CUPS_LLCAST filestats.st_size);
1884
1885 close(con->file);
1886 con->file = -1;
1887
1888 if (filestats.st_size > MaxRequestSize &&
1889 MaxRequestSize > 0)
1890 {
1891 /*
1892 * Request is too big; remove it and send an error...
1893 */
1894
1895 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1896 "cupsdReadClient: %d Removing temp file %s",
1897 con->http.fd, con->filename);
1898 unlink(con->filename);
1899 cupsdClearString(&con->filename);
1900
f899b121 1901 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
f7deaa1a 1902 {
1903 cupsdCloseClient(con);
1904 return;
1905 }
ef416fc2 1906 }
1907
1908 /*
1909 * Install the configuration file...
1910 */
1911
1912 status = install_conf_file(con);
1913
1914 /*
1915 * Return the status to the client...
1916 */
1917
f899b121 1918 if (!cupsdSendError(con, status, AUTH_NONE))
f7deaa1a 1919 {
1920 cupsdCloseClient(con);
1921 return;
1922 }
ef416fc2 1923 }
1924 break;
1925
1926 case HTTP_POST_RECV :
1927 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1928 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_"
1929 "%s, con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1930 con->http.fd,
1931 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1932 "CHUNKED" : "LENGTH",
1933 CUPS_LLCAST con->http.data_remaining, con->file);
1934
f7deaa1a 1935 do
ef416fc2 1936 {
f7deaa1a 1937 if (con->request)
ef416fc2 1938 {
f7deaa1a 1939 /*
1940 * Grab any request data from the connection...
1941 */
ef416fc2 1942
f7deaa1a 1943 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
ef416fc2 1944 {
f7deaa1a 1945 cupsdLogMessage(CUPSD_LOG_ERROR,
1946 "cupsdReadClient: %d IPP Read Error!",
1947 con->http.fd);
1948
f899b121 1949 cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE);
f7deaa1a 1950 cupsdCloseClient(con);
1951 return;
ef416fc2 1952 }
f7deaa1a 1953 else if (ipp_state != IPP_DATA)
1954 {
1955 if (con->http.state == HTTP_POST_SEND)
1956 {
f899b121 1957 cupsdSendError(con, HTTP_BAD_REQUEST, AUTH_NONE);
f7deaa1a 1958 cupsdCloseClient(con);
1959 return;
1960 }
ef416fc2 1961
f7deaa1a 1962 break;
1963 }
1964 else
1965 con->bytes += ippLength(con->request);
1966 }
ef416fc2 1967
f7deaa1a 1968 if (con->file < 0 && con->http.state != HTTP_POST_SEND)
1969 {
1970 /*
1971 * Create a file as needed for the request data...
1972 */
ef416fc2 1973
f7deaa1a 1974 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
1975 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
ef416fc2 1976
f7deaa1a 1977 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1978 con->filename, con->file);
ef416fc2 1979
f7deaa1a 1980 if (con->file < 0)
1981 {
f899b121 1982 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
f7deaa1a 1983 {
1984 cupsdCloseClient(con);
1985 return;
1986 }
1987 }
ef416fc2 1988
f7deaa1a 1989 fchmod(con->file, 0640);
1990 fchown(con->file, RunUser, Group);
1991 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1992 }
ef416fc2 1993
f7deaa1a 1994 if (con->http.state != HTTP_POST_SEND)
ef416fc2 1995 {
f7deaa1a 1996 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
1997 {
1998 cupsdCloseClient(con);
1999 return;
2000 }
2001 else if (bytes > 0)
2002 {
2003 con->bytes += bytes;
ef416fc2 2004
f7deaa1a 2005 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2006 "cupsdReadClient: %d writing %d bytes to %d",
2007 con->http.fd, bytes, con->file);
ef416fc2 2008
f7deaa1a 2009 if (write(con->file, line, bytes) < bytes)
2010 {
2011 cupsdLogMessage(CUPSD_LOG_ERROR,
2012 "cupsdReadClient: Unable to write %d bytes to %s: %s",
2013 bytes, con->filename, strerror(errno));
ef416fc2 2014
f7deaa1a 2015 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2016 "cupsdReadClient: Closing file %d...",
2017 con->file);
ef416fc2 2018
f7deaa1a 2019 close(con->file);
2020 con->file = -1;
2021 unlink(con->filename);
2022 cupsdClearString(&con->filename);
ef416fc2 2023
f899b121 2024 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
f7deaa1a 2025 {
2026 cupsdCloseClient(con);
2027 return;
2028 }
2029 }
2030 }
2031 else if (con->http.state == HTTP_POST_RECV)
2032 return;
2033 else if (con->http.state != HTTP_POST_SEND)
2034 {
2035 cupsdCloseClient(con);
2036 return;
ef416fc2 2037 }
2038 }
f7deaa1a 2039 }
2040 while (con->http.state == HTTP_POST_RECV && con->http.used > 0);
ef416fc2 2041
2042 if (con->http.state == HTTP_POST_SEND)
2043 {
2044 if (con->file >= 0)
2045 {
2046 fstat(con->file, &filestats);
2047
2048 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2049 "cupsdReadClient: %d Closing data file %d, "
2050 "size=" CUPS_LLFMT ".",
2051 con->http.fd, con->file,
2052 CUPS_LLCAST filestats.st_size);
2053
2054 close(con->file);
2055 con->file = -1;
2056
2057 if (filestats.st_size > MaxRequestSize &&
2058 MaxRequestSize > 0)
2059 {
2060 /*
2061 * Request is too big; remove it and send an error...
2062 */
2063
2064 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2065 "cupsdReadClient: %d Removing temp file %s",
2066 con->http.fd, con->filename);
2067 unlink(con->filename);
2068 cupsdClearString(&con->filename);
2069
2070 if (con->request)
2071 {
2072 /*
2073 * Delete any IPP request data...
2074 */
2075
2076 ippDelete(con->request);
2077 con->request = NULL;
2078 }
2079
f899b121 2080 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, AUTH_NONE))
f7deaa1a 2081 {
2082 cupsdCloseClient(con);
2083 return;
2084 }
ef416fc2 2085 }
2086
2087 if (con->command)
2088 {
2089 if (!cupsdSendCommand(con, con->command, con->options, 0))
2090 {
f899b121 2091 if (!cupsdSendError(con, HTTP_NOT_FOUND, AUTH_NONE))
f7deaa1a 2092 {
2093 cupsdCloseClient(con);
2094 return;
2095 }
ef416fc2 2096 }
2097 else
2098 cupsdLogRequest(con, HTTP_OK);
2099 }
2100 }
2101
2102 if (con->request)
f7deaa1a 2103 {
2104 cupsdProcessIPPRequest(con);
bc44d920 2105
2106 if (con->filename)
2107 {
2108 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2109 "cupsdReadClient: %d Removing temp file %s",
2110 con->http.fd, con->filename);
2111 unlink(con->filename);
2112 cupsdClearString(&con->filename);
2113 }
2114
f7deaa1a 2115 return;
2116 }
ef416fc2 2117 }
2118 break;
2119
2120 default :
2121 break; /* Anti-compiler-warning-code */
2122 }
2123
2124 if (!con->http.keep_alive && con->http.state == HTTP_WAITING)
f7deaa1a 2125 cupsdCloseClient(con);
ef416fc2 2126}
2127
2128
2129/*
2130 * 'cupsdSendCommand()' - Send output from a command via HTTP.
2131 */
2132
2133int /* O - 1 on success, 0 on failure */
2134cupsdSendCommand(
2135 cupsd_client_t *con, /* I - Client connection */
2136 char *command, /* I - Command to run */
2137 char *options, /* I - Command-line options */
2138 int root) /* I - Run as root? */
2139{
2140 int fd; /* Standard input file descriptor */
2141
2142
2143 if (con->filename)
ed486911 2144 {
ef416fc2 2145 fd = open(con->filename, O_RDONLY);
ef416fc2 2146
ed486911 2147 if (fd < 0)
2148 {
2149 cupsdLogMessage(CUPSD_LOG_ERROR,
2150 "cupsdSendCommand: %d Unable to open \"%s\" for reading: %s",
2151 con->http.fd, con->filename ? con->filename : "/dev/null",
2152 strerror(errno));
2153 return (0);
2154 }
ef416fc2 2155
ed486911 2156 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
2157 }
2158 else
2159 fd = -1;
ef416fc2 2160
2161 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
2162
ed486911 2163 if (fd >= 0)
2164 close(fd);
ef416fc2 2165
2166 cupsdLogMessage(CUPSD_LOG_INFO, "Started \"%s\" (pid=%d)", command,
2167 con->pipe_pid);
2168
2169 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendCommand: %d file=%d",
2170 con->http.fd, con->file);
2171
2172 if (con->pipe_pid == 0)
2173 return (0);
2174
2175 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
2176
f899b121 2177 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
ef416fc2 2178
2179 con->sent_header = 0;
2180 con->file_ready = 0;
2181 con->got_fields = 0;
2182 con->field_col = 0;
2183
2184 return (1);
2185}
2186
2187
2188/*
2189 * 'cupsdSendError()' - Send an error message via HTTP.
2190 */
2191
2192int /* O - 1 if successful, 0 otherwise */
2193cupsdSendError(cupsd_client_t *con, /* I - Connection */
f899b121 2194 http_status_t code, /* I - Error code */
2195 int auth_type)/* I - Authentication type */
ef416fc2 2196{
4744bd90 2197#ifdef HAVE_SSL
2198 /*
2199 * Force client to upgrade for authentication if that is how the
2200 * server is configured...
2201 */
2202
2203 if (code == HTTP_UNAUTHORIZED &&
2204 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
2205 strcasecmp(con->http.hostname, "localhost") &&
2206 !con->http.tls)
2207 {
2208 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2209 "cupsdSendError: Encryption before authentication!");
2210 code = HTTP_UPGRADE_REQUIRED;
2211 }
2212#endif /* HAVE_SSL */
2213
ef416fc2 2214 /*
2215 * Put the request in the access_log file...
2216 */
2217
2218 cupsdLogRequest(con, code);
2219
2220 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendError: %d code=%d (%s)",
2221 con->http.fd, code, httpStatus(code));
2222
2223 /*
2224 * To work around bugs in some proxies, don't use Keep-Alive for some
2225 * error messages...
f7deaa1a 2226 *
2227 * Kerberos authentication doesn't work without Keep-Alive, so
2228 * never disable it in that case.
ef416fc2 2229 */
2230
7594b224 2231 if (code >= HTTP_BAD_REQUEST && con->http.auth_type != AUTH_NEGOTIATE)
ef416fc2 2232 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
2233
2234 /*
2235 * Send an error message back to the client. If the error code is a
2236 * 400 or 500 series, make sure the message contains some text, too!
2237 */
2238
f899b121 2239 if (!cupsdSendHeader(con, code, NULL, auth_type))
ef416fc2 2240 return (0);
2241
2242#ifdef HAVE_SSL
2243 if (code == HTTP_UPGRADE_REQUIRED)
2244 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
2245 return (0);
2246
2247 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n") < 0)
2248 return (0);
2249#endif /* HAVE_SSL */
2250
f7deaa1a 2251 if (con->http.version >= HTTP_1_1 &&
2252 con->http.keep_alive == HTTP_KEEPALIVE_OFF)
ef416fc2 2253 {
2254 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
2255 return (0);
2256 }
2257
2258 if (code >= HTTP_BAD_REQUEST)
2259 {
2260 /*
2261 * Send a human-readable error message.
2262 */
2263
80ca4592 2264 char message[4096], /* Message for user */
2265 urltext[1024], /* URL redirection text */
2266 redirect[1024]; /* Redirection link */
ef416fc2 2267 const char *text; /* Status-specific text */
2268
80ca4592 2269
2270 redirect[0] = '\0';
2271
ef416fc2 2272 if (code == HTTP_UNAUTHORIZED)
2273 text = _cupsLangString(con->language,
2274 _("Enter your username and password or the "
2275 "root username and password to access this "
f7deaa1a 2276 "page. If you are using Kerberos authentication, "
2277 "make sure you have a valid Kerberos ticket."));
ef416fc2 2278 else if (code == HTTP_UPGRADE_REQUIRED)
80ca4592 2279 {
2280 text = urltext;
2281
2282 snprintf(urltext, sizeof(urltext),
2283 _cupsLangString(con->language,
2284 _("You must access this page using the URL "
2285 "<A HREF=\"https://%s:%d%s\">"
2286 "https://%s:%d%s</A>.")),
2287 con->servername, con->serverport, con->uri,
2288 con->servername, con->serverport, con->uri);
2289
2290 snprintf(redirect, sizeof(redirect),
b86bc4cf 2291 "<META HTTP-EQUIV=\"Refresh\" "
2292 "CONTENT=\"3;URL=https://%s:%d%s\">\n",
80ca4592 2293 con->servername, con->serverport, con->uri);
2294 }
ef416fc2 2295 else
2296 text = "";
2297
2298 snprintf(message, sizeof(message),
2299 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" "
2300 "\"http://www.w3.org/TR/REC-html40/loose.dtd\">\n"
2301 "<HTML>\n"
2302 "<HEAD>\n"
2303 "\t<META HTTP-EQUIV=\"Content-Type\" "
2304 "CONTENT=\"text/html; charset=utf-8\">\n"
2305 "\t<TITLE>%d %s</TITLE>\n"
2306 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2307 "HREF=\"/cups.css\">\n"
80ca4592 2308 "%s"
ef416fc2 2309 "</HEAD>\n"
2310 "<BODY>\n"
2311 "<H1>%d %s</H1>\n"
2312 "<P>%s</P>\n"
2313 "</BODY>\n"
2314 "</HTML>\n",
80ca4592 2315 code, httpStatus(code), redirect, code, httpStatus(code), text);
ef416fc2 2316
2317 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2318 return (0);
2319 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2320 (int)strlen(message)) < 0)
2321 return (0);
2322 if (httpPrintf(HTTP(con), "\r\n") < 0)
2323 return (0);
2324 if (httpPrintf(HTTP(con), "%s", message) < 0)
2325 return (0);
2326 }
2327 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2328 return (0);
2329
07725fee 2330 if (cupsdFlushHeader(con) < 0)
2331 return (0);
d09495fa 2332
ef416fc2 2333 con->http.state = HTTP_WAITING;
2334
2335 return (1);
2336}
2337
2338
ef416fc2 2339/*
2340 * 'cupsdSendHeader()' - Send an HTTP request.
2341 */
2342
2343int /* O - 1 on success, 0 on failure */
f899b121 2344cupsdSendHeader(
2345 cupsd_client_t *con, /* I - Client to send to */
2346 http_status_t code, /* I - HTTP status code */
2347 char *type, /* I - MIME type of document */
2348 int auth_type) /* I - Type of authentication */
ef416fc2 2349{
f7deaa1a 2350 char auth_str[1024]; /* Authorization string */
2351
2352
4744bd90 2353 /*
2354 * Send the HTTP status header...
2355 */
2356
b423cd4c 2357 if (code == HTTP_CONTINUE)
2358 {
4744bd90 2359 /*
2360 * 100-continue doesn't send any headers...
2361 */
2362
07725fee 2363 return (httpPrintf(HTTP(con), "HTTP/%d.%d 100 Continue\r\n\r\n",
2364 con->http.version / 100, con->http.version % 100) > 0);
b423cd4c 2365 }
2366
07725fee 2367 httpFlushWrite(HTTP(con));
2368
2369 con->http.data_encoding = HTTP_ENCODE_FIELDS;
2370
2371 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2372 con->http.version % 100, code, httpStatus(code)) < 0)
2373 return (0);
ef416fc2 2374 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2375 return (0);
2376 if (ServerHeader)
2377 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2378 return (0);
2379 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2380 {
2381 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2382 return (0);
2383 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2384 KeepAliveTimeout) < 0)
2385 return (0);
2386 }
2387 if (code == HTTP_METHOD_NOT_ALLOWED)
2388 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST\r\n") < 0)
2389 return (0);
2390
2391 if (code == HTTP_UNAUTHORIZED)
2392 {
f899b121 2393 if (auth_type == AUTH_NONE)
2394 {
2395 if (!con->best || con->best->type == AUTH_NONE)
2396 auth_type = DefaultAuthType;
2397 else
2398 auth_type = con->best->type;
2399 }
f7deaa1a 2400
2401 auth_str[0] = '\0';
2402
2403 if (auth_type == AUTH_BASIC || auth_type == AUTH_BASICDIGEST)
2404 strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
2405 else if (auth_type == AUTH_DIGEST)
2406 snprintf(auth_str, sizeof(auth_str), "Digest realm=\"CUPS\", nonce=\"%s\"",
2407 con->http.hostname);
2408#ifdef HAVE_GSSAPI
c24d2134 2409 else if (auth_type == AUTH_NEGOTIATE && con->gss_output_token.length == 0)
f7deaa1a 2410 strlcpy(auth_str, "Negotiate", sizeof(auth_str));
2411#endif /* HAVE_GSSAPI */
2412
2413#ifdef HAVE_AUTHORIZATION_H
355e94dc 2414 if (con->best && auth_type != AUTH_NEGOTIATE)
ef416fc2 2415 {
f7deaa1a 2416 int i; /* Looping var */
2417 char *auth_key; /* Auth key buffer */
2418 size_t auth_size; /* Size of remaining buffer */
2419
2420
2421 auth_key = auth_str + strlen(auth_str);
2422 auth_size = sizeof(auth_str) - (auth_key - auth_str);
2423
2424 for (i = 0; i < con->best->num_names; i ++)
2425 {
2426 if (!strncasecmp(con->best->names[i], "@AUTHKEY(", 9))
2427 {
2428 snprintf(auth_key, auth_size, ", authkey=\"%s\"",
2429 con->best->names[i] + 9);
2430 /* end parenthesis is stripped in conf.c */
2431 break;
2432 }
2433 else if (!strcasecmp(con->best->names[i], "@SYSTEM") &&
2434 SystemGroupAuthKey)
2435 {
2436 snprintf(auth_key, auth_size, ", authkey=\"%s\"", SystemGroupAuthKey);
2437 break;
2438 }
2439 }
ef416fc2 2440 }
f7deaa1a 2441#endif /* HAVE_AUTHORIZATION_H */
2442
bc44d920 2443 if (auth_str[0])
2444 {
355e94dc 2445 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendHeader: WWW-Authenticate: %s",
bc44d920 2446 auth_str);
2447
2448 if (httpPrintf(HTTP(con), "WWW-Authenticate: %s\r\n", auth_str) < 0)
2449 return (0);
2450 }
ef416fc2 2451 }
2452
f7deaa1a 2453#ifdef HAVE_GSSAPI
2454 /*
2455 * WWW-Authenticate: Negotiate can be included even for
2456 * non-401 replies...
2457 */
2458
2459 if (con->gss_output_token.length > 0)
2460 {
2461 char buf[2048]; /* Output token buffer */
2462 OM_uint32 minor_status; /* Minor status code */
2463
2464
2465 httpEncode64_2(buf, sizeof(buf),
2466 con->gss_output_token.value,
2467 con->gss_output_token.length);
2468 gss_release_buffer(&minor_status, &con->gss_output_token);
2469
355e94dc
MS		 2470 cupsdLogMessage(CUPSD_LOG_DEBUG,
2471 "cupsdSendHeader: WWW-Authenticate: Negotiate %s", buf);
2472
f7deaa1a 2473 if (httpPrintf(HTTP(con), "WWW-Authenticate: Negotiate %s\r\n", buf) < 0)
2474 return (0);
2475 }
2476#endif /* HAVE_GSSAPI */
2477
e1d6a774 2478 if (con->language && strcmp(con->language->language, "C"))
ef416fc2 2479 {
2480 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2481 con->language->language) < 0)
2482 return (0);
2483 }
2484
e1d6a774 2485 if (type)
ef416fc2 2486 {
2487 if (!strcmp(type, "text/html"))
2488 {
2489 if (httpPrintf(HTTP(con),
2490 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2491 return (0);
2492 }
2493 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2494 return (0);
2495 }
2496
2497 return (1);
2498}
2499
2500
2501/*
2502 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2503 */
2504
2505void
2506cupsdUpdateCGI(void)
2507{
2508 char *ptr, /* Pointer to end of line in buffer */
2509 message[1024]; /* Pointer to message text */
2510 int loglevel; /* Log level for message */
2511
2512
2513 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2514 message, sizeof(message))) != NULL)
2515 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2516 break;
2517
d09495fa 2518 if (ptr == NULL && !CGIStatusBuffer->bufused)
ef416fc2 2519 {
2520 /*
2521 * Fatal error on pipe - should never happen!
2522 */
2523
2524 cupsdLogMessage(CUPSD_LOG_CRIT,
2525 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2526 strerror(errno));
2527 }
2528}
2529
2530
2531/*
2532 * 'cupsdWriteClient()' - Write data to a client as needed.
2533 */
2534
f7deaa1a 2535void
ef416fc2 2536cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2537{
2538 int bytes; /* Number of bytes written */
2539 char buf[16385]; /* Data buffer */
2540 char *bufptr; /* Pointer into buffer */
2541 ipp_state_t ipp_state; /* IPP state value */
2542
2543
2544#ifdef DEBUG
2545 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b94498cf 2546 "cupsdWriteClient(con=%p) %d response=%p(%d), file=%d "
ef416fc2 2547 "pipe_pid=%d state=%d",
b94498cf 2548 con, con->http.fd, con->response, con->response->state,
2549 con->file, con->pipe_pid, con->http.state);
ef416fc2 2550#endif /* DEBUG */
2551
2552 if (con->http.state != HTTP_GET_SEND &&
2553 con->http.state != HTTP_POST_SEND)
f7deaa1a 2554 return;
2555
2556 if (con->pipe_pid)
2557 {
2558 /*
2559 * Make sure we select on the CGI output...
2560 */
2561
f899b121 2562 cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
f7deaa1a 2563
2564 if (!con->file_ready)
2565 {
2566 /*
2567 * Try again later when there is CGI output available...
2568 */
2569
2570 cupsdRemoveSelect(con->http.fd);
2571 return;
2572 }
2573
2574 con->file_ready = 0;
2575 }
ef416fc2 2576
b94498cf 2577 if (con->response && con->response->state != IPP_DATA)
ef416fc2 2578 {
07725fee 2579 ipp_state = ippWrite(HTTP(con), con->response);
b94498cf 2580 bytes = ipp_state != IPP_ERROR &&
2581 (con->file >= 0 || ipp_state != IPP_DATA);
ef416fc2 2582 }
2583 else if ((bytes = read(con->file, buf, sizeof(buf) - 1)) > 0)
2584 {
2585 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2586 "cupsdWriteClient: Read %d bytes from file %d...",
2587 bytes, con->file);
2588
2589 if (con->pipe_pid && !con->got_fields)
2590 {
2591 /*
2592 * Inspect the data for Content-Type and other fields.
2593 */
2594
2595 buf[bytes] = '\0';
2596
2597 for (bufptr = buf; !con->got_fields && *bufptr; bufptr ++)
2598 if (*bufptr == '\n')
2599 {
2600 /*
2601 * Send line to client...
2602 */
2603
2604 if (bufptr > buf && bufptr[-1] == '\r')
2605 bufptr[-1] = '\0';
2606 *bufptr++ = '\0';
2607
2608 cupsdLogMessage(CUPSD_LOG_DEBUG2, "Script header: %s", buf);
2609
2610 if (!con->sent_header)
2611 {
2612 /*
2613 * Handle redirection and CGI status codes...
2614 */
2615
2616 if (!strncasecmp(buf, "Location:", 9))
d6ae789d 2617 {
f899b121 2618 cupsdSendHeader(con, HTTP_SEE_OTHER, NULL, AUTH_NONE);
07725fee 2619 con->sent_header = 2;
2620
d6ae789d 2621 if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
f7deaa1a 2622 return;
d6ae789d 2623 }
ef416fc2 2624 else if (!strncasecmp(buf, "Status:", 7))
07725fee 2625 {
f899b121 2626 cupsdSendError(con, (http_status_t)atoi(buf + 7), AUTH_NONE);
07725fee 2627 con->sent_header = 2;
2628 }
ef416fc2 2629 else
4744bd90 2630 {
f899b121 2631 cupsdSendHeader(con, HTTP_OK, NULL, AUTH_NONE);
07725fee 2632 con->sent_header = 1;
ef416fc2 2633
4744bd90 2634 if (con->http.version == HTTP_1_1)
2635 {
4744bd90 2636 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
f7deaa1a 2637 return;
4744bd90 2638 }
2639 }
ef416fc2 2640 }
2641
2642 if (strncasecmp(buf, "Status:", 7))
2643 httpPrintf(HTTP(con), "%s\r\n", buf);
2644
2645 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d %s",
2646 con->http.fd, buf);
2647
2648 /*
2649 * Update buffer...
2650 */
2651
2652 bytes -= (bufptr - buf);
2653 memmove(buf, bufptr, bytes + 1);
2654 bufptr = buf - 1;
2655
2656 /*
2657 * See if the line was empty...
2658 */
2659
2660 if (con->field_col == 0)
d09495fa 2661 {
ef416fc2 2662 con->got_fields = 1;
d09495fa 2663
07725fee 2664 if (cupsdFlushHeader(con) < 0)
2665 {
2666 cupsdCloseClient(con);
f7deaa1a 2667 return;
07725fee 2668 }
d09495fa 2669
2670 if (con->http.version == HTTP_1_1)
2671 con->http.data_encoding = HTTP_ENCODE_CHUNKED;
2672 }
ef416fc2 2673 else
2674 con->field_col = 0;
2675 }
2676 else if (*bufptr != '\r')
2677 con->field_col ++;
2678
2679 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2680 "cupsdWriteClient: %d bytes=%d, got_fields=%d",
2681 con->http.fd, bytes, con->got_fields);
2682
2683 if (bytes > 0 && !con->got_fields)
2684 {
2685 /*
2686 * Remaining text needs to go out...
2687 */
2688
2689 httpPrintf(HTTP(con), "%s", buf);
2690
2691 con->http.activity = time(NULL);
f7deaa1a 2692 return;
ef416fc2 2693 }
2694 else if (bytes == 0)
ef416fc2 2695 con->http.activity = time(NULL);
ef416fc2 2696 }
2697
4744bd90 2698 if (bytes > 0)
ef416fc2 2699 {
4744bd90 2700 if (httpWrite2(HTTP(con), buf, bytes) < 0)
2701 {
2702 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2703 "cupsdWriteClient: %d Write of %d bytes failed!",
2704 con->http.fd, bytes);
ef416fc2 2705
4744bd90 2706 cupsdCloseClient(con);
f7deaa1a 2707 return;
4744bd90 2708 }
ef416fc2 2709
4744bd90 2710 con->bytes += bytes;
ef416fc2 2711
4744bd90 2712 if (con->http.state == HTTP_WAITING)
2713 bytes = 0;
2714 }
ef416fc2 2715 }
2716
2717 if (bytes <= 0)
2718 {
2719 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d bytes < 0",
2720 con->http.fd);
2721
2722 cupsdLogRequest(con, HTTP_OK);
2723
2724 httpFlushWrite(HTTP(con));
2725
07725fee 2726 if (con->http.data_encoding == HTTP_ENCODE_CHUNKED && con->sent_header == 1)
ef416fc2 2727 {
07725fee 2728 if (httpWrite2(HTTP(con), "", 0) < 0)
ef416fc2 2729 {
2730 cupsdCloseClient(con);
f7deaa1a 2731 return;
ef416fc2 2732 }
2733 }
2734
2735 con->http.state = HTTP_WAITING;
2736
f7deaa1a 2737 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
ef416fc2 2738
2739 if (con->file >= 0)
2740 {
f7deaa1a 2741 cupsdRemoveSelect(con->file);
ef416fc2 2742
2743 if (con->pipe_pid)
2744 cupsdEndProcess(con->pipe_pid, 0);
2745
2746 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2747 "cupsdWriteClient: %d Closing data file %d.",
2748 con->http.fd, con->file);
2749
2750 close(con->file);
2751 con->file = -1;
2752 con->pipe_pid = 0;
2753 }
2754
2755 if (con->filename)
2756 {
2757 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2758 "cupsdWriteClient: %d Removing temp file %s",
2759 con->http.fd, con->filename);
2760 unlink(con->filename);
2761 cupsdClearString(&con->filename);
2762 }
2763
2abf387c 2764 if (con->request)
ef416fc2 2765 {
2766 ippDelete(con->request);
2767 con->request = NULL;
2768 }
2769
2abf387c 2770 if (con->response)
ef416fc2 2771 {
2772 ippDelete(con->response);
2773 con->response = NULL;
2774 }
2775
2776 cupsdClearString(&con->command);
2777 cupsdClearString(&con->options);
b86bc4cf 2778 cupsdClearString(&con->query_string);
ef416fc2 2779
2780 if (!con->http.keep_alive)
2781 {
2782 cupsdCloseClient(con);
f7deaa1a 2783 return;
ef416fc2 2784 }
2785 }
2786
2787 con->http.activity = time(NULL);
f7deaa1a 2788}
ef416fc2 2789
f7deaa1a 2790
e1d6a774 2791/*
2792 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2793 */
2794
2795static int /* O - 1 if modified since */
2796check_if_modified(
2797 cupsd_client_t *con, /* I - Client connection */
2798 struct stat *filestats) /* I - File information */
2799{
2800 char *ptr; /* Pointer into field */
2801 time_t date; /* Time/date value */
2802 off_t size; /* Size/length value */
2803
2804
2805 size = 0;
2806 date = 0;
2807 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
2808
2809 if (*ptr == '\0')
2810 return (1);
2811
2812 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2813 "check_if_modified: %d If-Modified-Since=\"%s\"",
2814 con->http.fd, ptr);
2815
2816 while (*ptr != '\0')
2817 {
2818 while (isspace(*ptr) || *ptr == ';')
2819 ptr ++;
2820
2821 if (strncasecmp(ptr, "length=", 7) == 0)
2822 {
2823 ptr += 7;
2824 size = strtoll(ptr, NULL, 10);
2825
2826 while (isdigit(*ptr))
2827 ptr ++;
2828 }
2829 else if (isalpha(*ptr))
2830 {
2831 date = httpGetDateTime(ptr);
2832 while (*ptr != '\0' && *ptr != ';')
2833 ptr ++;
2834 }
e53920b9 2835 else
2836 ptr ++;
e1d6a774 2837 }
2838
2839 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2840 "check_if_modified: %d sizes=" CUPS_LLFMT ","
2841 CUPS_LLFMT " dates=%d,%d",
2842 con->http.fd, CUPS_LLCAST size,
2843 CUPS_LLCAST filestats->st_size, (int)date,
2844 (int)filestats->st_mtime);
2845
2846 return ((size != filestats->st_size && size != 0) ||
2847 (date < filestats->st_mtime && date != 0) ||
2848 (size == 0 && date == 0));
2849}
2850
2851
80ca4592 2852#ifdef HAVE_SSL
e1d6a774 2853/*
2854 * 'encrypt_client()' - Enable encryption for the client...
2855 */
2856
2857static int /* O - 1 on success, 0 on error */
2858encrypt_client(cupsd_client_t *con) /* I - Client to encrypt */
2859{
80ca4592 2860# ifdef HAVE_LIBSSL
e1d6a774 2861 SSL_CTX *context; /* Context for encryption */
2862 SSL *conn; /* Connection for encryption */
411affcf 2863 BIO *bio; /* BIO data */
e1d6a774 2864 unsigned long error; /* Error code */
2865
2866
8ca02f3c 2867 /*
2868 * Verify that we have a certificate...
2869 */
2870
2871 if (access(ServerKey, 0) || access(ServerCertificate, 0))
2872 {
2873 /*
2874 * Nope, make a self-signed certificate...
2875 */
2876
b86bc4cf 2877 if (!make_certificate(con))
8ca02f3c 2878 return (0);
2879 }
2880
e1d6a774 2881 /*
2882 * Create the SSL context and accept the connection...
2883 */
2884
2885 context = SSL_CTX_new(SSLv23_server_method());
2886
2887 SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
2888 SSL_CTX_use_PrivateKey_file(context, ServerKey, SSL_FILETYPE_PEM);
2889 SSL_CTX_use_certificate_file(context, ServerCertificate, SSL_FILETYPE_PEM);
2890
411affcf 2891 bio = BIO_new(_httpBIOMethods());
2892 BIO_ctrl(bio, BIO_C_SET_FILE_PTR, 0, (char *)HTTP(con));
2893
e1d6a774 2894 conn = SSL_new(context);
411affcf 2895 SSL_set_bio(conn, bio, bio);
e1d6a774 2896
e1d6a774 2897 if (SSL_accept(conn) != 1)
2898 {
2899 cupsdLogMessage(CUPSD_LOG_ERROR,
2900 "encrypt_client: Unable to encrypt connection from %s!",
2901 con->http.hostname);
2902
2903 while ((error = ERR_get_error()) != 0)
2904 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2905 ERR_error_string(error, NULL));
2906
2907 SSL_CTX_free(context);
2908 SSL_free(conn);
2909 return (0);
2910 }
2911
2912 cupsdLogMessage(CUPSD_LOG_DEBUG,
2913 "encrypt_client: %d Connection from %s now encrypted.",
2914 con->http.fd, con->http.hostname);
2915
2916 con->http.tls = conn;
2917 return (1);
f7deaa1a 2918
80ca4592 2919# elif defined(HAVE_GNUTLS)
e1d6a774 2920 http_tls_t *conn; /* TLS session object */
2921 int error; /* Error code */
2922 gnutls_certificate_server_credentials *credentials;
2923 /* TLS credentials */
2924
2925
2926 /*
2927 * Verify that we have a certificate...
2928 */
2929
2930 if (access(ServerKey, 0) || access(ServerCertificate, 0))
2931 {
2932 /*
2933 * Nope, make a self-signed certificate...
2934 */
2935
b86bc4cf 2936 if (!make_certificate(con))
8ca02f3c 2937 return (0);
e1d6a774 2938 }
2939
2940 /*
2941 * Create the SSL object and perform the SSL handshake...
2942 */
2943
89d46774 2944 conn = (http_tls_t *)malloc(sizeof(http_tls_t));
e1d6a774 2945
2946 if (conn == NULL)
2947 return (0);
2948
2949 credentials = (gnutls_certificate_server_credentials *)
2950 malloc(sizeof(gnutls_certificate_server_credentials));
2951 if (credentials == NULL)
2952 {
2953 cupsdLogMessage(CUPSD_LOG_ERROR,
2954 "encrypt_client: Unable to encrypt connection from %s!",
2955 con->http.hostname);
2956 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s", strerror(errno));
2957
2958 free(conn);
2959 return (0);
2960 }
2961
2962 gnutls_certificate_allocate_credentials(credentials);
f7deaa1a 2963 gnutls_certificate_set_x509_key_file(*credentials, ServerCertificate,
e1d6a774 2964 ServerKey, GNUTLS_X509_FMT_PEM);
2965
2966 gnutls_init(&(conn->session), GNUTLS_SERVER);
2967 gnutls_set_default_priority(conn->session);
2968 gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
411affcf 2969 gnutls_transport_set_ptr(conn->session, (gnutls_transport_ptr)HTTP(con));
2970 gnutls_transport_set_pull_function(conn->session, _httpReadGNUTLS);
2971 gnutls_transport_set_push_function(conn->session, _httpWriteGNUTLS);
e1d6a774 2972
2973 error = gnutls_handshake(conn->session);
2974
2975 if (error != GNUTLS_E_SUCCESS)
2976 {
2977 cupsdLogMessage(CUPSD_LOG_ERROR,
2978 "encrypt_client: Unable to encrypt connection from %s!",
2979 con->http.hostname);
2980 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2981 gnutls_strerror(error));
2982
2983 gnutls_deinit(conn->session);
2984 gnutls_certificate_free_credentials(*credentials);
2985 free(conn);
2986 free(credentials);
2987 return (0);
2988 }
2989
2990 cupsdLogMessage(CUPSD_LOG_DEBUG,
2991 "encrypt_client: %d Connection from %s now encrypted.",
2992 con->http.fd, con->http.hostname);
2993
2994 conn->credentials = credentials;
2995 con->http.tls = conn;
2996 return (1);
2997
80ca4592 2998# elif defined(HAVE_CDSASSL)
89d46774 2999 OSStatus error; /* Error code */
3000 http_tls_t *conn; /* CDSA connection information */
e1d6a774 3001
3002
89d46774 3003 if ((conn = (http_tls_t *)malloc(sizeof(http_tls_t))) == NULL)
3004 return (0);
e1d6a774 3005
89d46774 3006 error = 0;
3007 conn->session = NULL;
b86bc4cf 3008 conn->certsArray = get_cdsa_certificate(con);
e1d6a774 3009
8ca02f3c 3010 if (!conn->certsArray)
3011 {
3012 /*
3013 * No keychain (yet), make a self-signed certificate...
3014 */
3015
b86bc4cf 3016 if (make_certificate(con))
3017 conn->certsArray = get_cdsa_certificate(con);
8ca02f3c 3018 }
3019
89d46774 3020 if (!conn->certsArray)
e1d6a774 3021 {
3022 cupsdLogMessage(CUPSD_LOG_ERROR,
411affcf 3023 "encrypt_client: Could not find signing key in keychain "
e1d6a774 3024 "\"%s\"", ServerCertificate);
3025 error = errSSLBadCert; /* errSSLBadConfiguration is a better choice, but not available on 10.2.x */
3026 }
3027
3028 if (!error)
89d46774 3029 error = SSLNewContext(true, &conn->session);
e1d6a774 3030
3031 if (!error)
89d46774 3032 error = SSLSetIOFuncs(conn->session, _httpReadCDSA, _httpWriteCDSA);
3033
3034 if (!error)
ed486911 3035 error = SSLSetProtocolVersionEnabled(conn->session, kSSLProtocol2, false);
e1d6a774 3036
3037 if (!error)
411affcf 3038 error = SSLSetConnection(conn->session, HTTP(con));
e1d6a774 3039
3040 if (!error)
89d46774 3041 error = SSLSetAllowsExpiredCerts(conn->session, true);
e1d6a774 3042
3043 if (!error)
89d46774 3044 error = SSLSetAllowsAnyRoot(conn->session, true);
ef416fc2 3045
89d46774 3046 if (!error)
3047 error = SSLSetCertificate(conn->session, conn->certsArray);
ef416fc2 3048
e1d6a774 3049 if (!error)
3050 {
3051 /*
3052 * Perform SSL/TLS handshake
3053 */
ef416fc2 3054
89d46774 3055 while ((error = SSLHandshake(conn->session)) == errSSLWouldBlock)
e1d6a774 3056 usleep(1000);
3057 }
ef416fc2 3058
e1d6a774 3059 if (error)
3060 {
3061 cupsdLogMessage(CUPSD_LOG_ERROR,
3062 "encrypt_client: Unable to encrypt connection from %s!",
3063 con->http.hostname);
ef416fc2 3064
ed486911 3065 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s (%d)",
3066 cssmErrorString(error), (int)error);
ef416fc2 3067
e1d6a774 3068 con->http.error = error;
3069 con->http.status = HTTP_ERROR;
ef416fc2 3070
89d46774 3071 if (conn->session)
3072 SSLDisposeContext(conn->session);
3073
3074 if (conn->certsArray)
3075 CFRelease(conn->certsArray);
3076
3077 free(conn);
ef416fc2 3078
e1d6a774 3079 return (0);
ef416fc2 3080 }
3081
e1d6a774 3082 cupsdLogMessage(CUPSD_LOG_DEBUG,
3083 "encrypt_client: %d Connection from %s now encrypted.",
3084 con->http.fd, con->http.hostname);
ef416fc2 3085
e1d6a774 3086 con->http.tls = conn;
3087 return (1);
3088
80ca4592 3089# endif /* HAVE_LIBSSL */
ef416fc2 3090}
80ca4592 3091#endif /* HAVE_SSL */
ef416fc2 3092
3093
3094#ifdef HAVE_CDSASSL
3095/*
b86bc4cf 3096 * 'get_cdsa_certificate()' - Get a SSL/TLS certificate from the System keychain.
ef416fc2 3097 */
3098
b86bc4cf 3099static CFArrayRef /* O - Array of certificates */
3100get_cdsa_certificate(cupsd_client_t *con) /* I - Client connection */
ef416fc2 3101{
3102 OSStatus err; /* Error info */
b86bc4cf 3103 SecKeychainRef keychain; /* Keychain reference */
3104 SecIdentitySearchRef search; /* Search reference */
ef416fc2 3105 SecIdentityRef identity; /* Identity */
b86bc4cf 3106 CFArrayRef certificates = NULL;
3107 /* Certificate array */
ef416fc2 3108
3109
b86bc4cf 3110 if ((err = SecKeychainOpen(ServerCertificate, &keychain)))
3111 {
3112 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot open keychain \"%s\", %s",
3113 ServerCertificate, cssmErrorString(err));
3114 return (NULL);
3115 }
ef416fc2 3116
b86bc4cf 3117# if HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY
3118 /*
3119 * Use a policy to search for valid certificates who's common name matches the
3120 * servername...
3121 */
3122
3123 SecPolicySearchRef policy_search; /* Policy search ref */
3124 SecPolicyRef policy; /* Policy ref */
3125 CSSM_DATA options; /* Policy options */
3126 CSSM_APPLE_TP_SSL_OPTIONS
3127 ssl_options; /* SSL Option for hostname */
3128
3129
3130 if ((err = SecPolicySearchCreate(CSSM_CERT_X_509v3, &CSSMOID_APPLE_TP_SSL,
3131 NULL, &policy_search)))
ef416fc2 3132 {
b86bc4cf 3133 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create a policy search reference");
3134 CFRelease(keychain);
3135 return (NULL);
3136 }
ef416fc2 3137
b86bc4cf 3138 if ((err = SecPolicySearchCopyNext(policy_search, &policy)))
3139 {
3140 cupsdLogMessage(CUPSD_LOG_ERROR,
3141 "Cannot find a policy to use for searching");
3142 CFRelease(keychain);
3143 CFRelease(policy_search);
3144 return (NULL);
3145 }
ef416fc2 3146
b86bc4cf 3147 memset(&ssl_options, 0, sizeof(ssl_options));
3148 ssl_options.Version = CSSM_APPLE_TP_SSL_OPTS_VERSION;
3149 ssl_options.ServerName = con->servername;
3150 ssl_options.ServerNameLen = strlen(con->servername);
ef416fc2 3151
b86bc4cf 3152 options.Data = (uint8 *)&ssl_options;
3153 options.Length = sizeof(ssl_options);
3154
3155 if ((err = SecPolicySetValue(policy, &options)))
3156 {
3157 cupsdLogMessage(CUPSD_LOG_ERROR,
3158 "Cannot set policy value to use for searching");
3159 CFRelease(keychain);
3160 CFRelease(policy_search);
3161 return (NULL);
3162 }
3163
3164 err = SecIdentitySearchCreateWithPolicy(policy, NULL, CSSM_KEYUSE_SIGN,
3165 keychain, FALSE, &search);
3166# else
3167 /*
3168 * Assume there is exactly one SecIdentity in the keychain...
3169 */
3170
3171 err = SecIdentitySearchCreate(keychain, CSSM_KEYUSE_SIGN, &search);
3172# endif /* HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY */
3173
3174 if (err)
3175 cupsdLogMessage(CUPSD_LOG_DEBUG,
3176 "Cannot create keychain search reference: %s",
3177 cssmErrorString(err));
3178 else
3179 {
3180 if ((err = SecIdentitySearchCopyNext(search, &identity)))
3181 {
3182 cupsdLogMessage(CUPSD_LOG_DEBUG,
ef416fc2 3183 "Cannot find signing key in keychain \"%s\", error %d",
3184 ServerCertificate, (int)err);
b86bc4cf 3185 }
3186 else
3187 {
3188 if (CFGetTypeID(identity) != SecIdentityGetTypeID())
3189 cupsdLogMessage(CUPSD_LOG_ERROR,
3190 "SecIdentitySearchCopyNext CFTypeID failure!");
ef416fc2 3191 else
3192 {
b86bc4cf 3193 if ((certificates = CFArrayCreate(NULL, (const void **)&identity,
3194 1, &kCFTypeArrayCallBacks)) == NULL)
3195 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create certificate array");
ef416fc2 3196 }
3197
b86bc4cf 3198 CFRelease(identity);
ef416fc2 3199 }
3200
b86bc4cf 3201 CFRelease(search);
ef416fc2 3202 }
3203
b86bc4cf 3204# if HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY
3205 CFRelease(policy);
3206 CFRelease(policy_search);
3207# endif /* HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY */
3208
3209 return (certificates);
ef416fc2 3210}
3211#endif /* HAVE_CDSASSL */
3212
3213
3214/*
3215 * 'get_file()' - Get a filename and state info.
3216 */
3217
3218static char * /* O - Real filename */
3219get_file(cupsd_client_t *con, /* I - Client connection */
3220 struct stat *filestats, /* O - File information */
3221 char *filename, /* IO - Filename buffer */
3222 int len) /* I - Buffer length */
3223{
3224 int status; /* Status of filesystem calls */
3225 char *ptr; /* Pointer info filename */
3226 int plen; /* Remaining length after pointer */
3227
3228
3229 /*
f7deaa1a 3230 * Figure out the real filename...
ef416fc2 3231 */
3232
3233 if (!strncmp(con->uri, "/ppd/", 5))
3234 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
f7deaa1a 3235 else if (!strncmp(con->uri, "/rss/", 5) && !strchr(con->uri + 5, '/'))
3236 snprintf(filename, len, "%s/rss/%s", CacheDir, con->uri + 5);
ef416fc2 3237 else if (!strncmp(con->uri, "/admin/conf/", 12))
3238 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
3239 else if (!strncmp(con->uri, "/admin/log/", 11))
3240 {
3241 if (!strcmp(con->uri + 11, "access_log") && AccessLog[0] == '/')
3242 strlcpy(filename, AccessLog, len);
3243 else if (!strcmp(con->uri + 11, "error_log") && ErrorLog[0] == '/')
3244 strlcpy(filename, ErrorLog, len);
3245 else if (!strcmp(con->uri + 11, "page_log") && PageLog[0] == '/')
3246 strlcpy(filename, PageLog, len);
3247 else
3248 return (NULL);
3249 }
d6ae789d 3250 else if (con->language)
ef416fc2 3251 snprintf(filename, len, "%s/%s%s", DocumentRoot, con->language->language,
d6ae789d 3252 con->uri);
ef416fc2 3253 else
3254 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3255
3256 if ((ptr = strchr(filename, '?')) != NULL)
3257 *ptr = '\0';
3258
3259 /*
3260 * Grab the status for this language; if there isn't a language-specific file
3261 * then fallback to the default one...
3262 */
3263
d6ae789d 3264 if ((status = stat(filename, filestats)) != 0 && con->language &&
3265 strncmp(con->uri, "/ppd/", 5) &&
3266 strncmp(con->uri, "/admin/conf/", 12) &&
3267 strncmp(con->uri, "/admin/log/", 11))
ef416fc2 3268 {
3269 /*
d6ae789d 3270 * Drop the country code...
ef416fc2 3271 */
3272
d6ae789d 3273 char ll[3]; /* Short language name */
3274
3275
3276 strlcpy(ll, con->language->language, sizeof(ll));
3277 snprintf(filename, len, "%s/%s%s", DocumentRoot, ll, con->uri);
3278
3279 if ((ptr = strchr(filename, '?')) != NULL)
3280 *ptr = '\0';
3281
3282 if ((status = stat(filename, filestats)) != 0)
ef416fc2 3283 {
d6ae789d 3284 /*
3285 * Drop the language prefix and try the root directory...
3286 */
3287
ef416fc2 3288 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3289
3290 if ((ptr = strchr(filename, '?')) != NULL)
3291 *ptr = '\0';
3292
3293 status = stat(filename, filestats);
3294 }
3295 }
3296
3297 /*
3298 * If we're found a directory, get the index.html file instead...
3299 */
3300
3301 if (!status && S_ISDIR(filestats->st_mode))
3302 {
3303 if (filename[strlen(filename) - 1] != '/')
3304 strlcat(filename, "/", len);
3305
3306 ptr = filename + strlen(filename);
3307 plen = len - (ptr - filename);
3308
3309 strlcpy(ptr, "index.html", plen);
3310 status = stat(filename, filestats);
3311
3312#ifdef HAVE_JAVA
3313 if (status)
3314 {
3315 strlcpy(ptr, "index.class", plen);
3316 status = stat(filename, filestats);
3317 }
3318#endif /* HAVE_JAVA */
3319
3320#ifdef HAVE_PERL
3321 if (status)
3322 {
3323 strlcpy(ptr, "index.pl", plen);
3324 status = stat(filename, filestats);
3325 }
3326#endif /* HAVE_PERL */
3327
3328#ifdef HAVE_PHP
3329 if (status)
3330 {
3331 strlcpy(ptr, "index.php", plen);
3332 status = stat(filename, filestats);
3333 }
3334#endif /* HAVE_PHP */
3335
3336#ifdef HAVE_PYTHON
3337 if (status)
3338 {
3339 strlcpy(ptr, "index.pyc", plen);
3340 status = stat(filename, filestats);
3341 }
3342
3343 if (status)
3344 {
3345 strlcpy(ptr, "index.py", plen);
3346 status = stat(filename, filestats);
3347 }
3348#endif /* HAVE_PYTHON */
3349 }
3350
3351 cupsdLogMessage(CUPSD_LOG_DEBUG2, "get_file: %d filename=%s size=%d",
3352 con->http.fd, filename,
3353 status ? -1 : (int)filestats->st_size);
3354
3355 if (!status)
3356 con->http.data_remaining = (int)filestats->st_size;
3357
3358 if (status)
3359 return (NULL);
3360 else
3361 return (filename);
3362}
3363
3364
3365/*
3366 * 'install_conf_file()' - Install a configuration file.
3367 */
3368
3369static http_status_t /* O - Status */
3370install_conf_file(cupsd_client_t *con) /* I - Connection */
3371{
3372 cups_file_t *in, /* Input file */
3373 *out; /* Output file */
3374 char buffer[1024]; /* Copy buffer */
3375 int bytes; /* Number of bytes */
3376 char conffile[1024], /* Configuration filename */
3377 newfile[1024], /* New config filename */
3378 oldfile[1024]; /* Old config filename */
3379 struct stat confinfo; /* Config file info */
3380
3381
3382 /*
3383 * First construct the filenames...
3384 */
3385
3386 snprintf(conffile, sizeof(conffile), "%s%s", ServerRoot, con->uri + 11);
3387 snprintf(newfile, sizeof(newfile), "%s%s.N", ServerRoot, con->uri + 11);
3388 snprintf(oldfile, sizeof(oldfile), "%s%s.O", ServerRoot, con->uri + 11);
3389
3390 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...", conffile);
3391
3392 /*
3393 * Get the owner, group, and permissions of the configuration file.
3394 * If it doesn't exist, assign it to the User and Group in the
3395 * cupsd.conf file with mode 0640 permissions.
3396 */
3397
3398 if (stat(conffile, &confinfo))
3399 {
3400 confinfo.st_uid = User;
3401 confinfo.st_gid = Group;
3402 confinfo.st_mode = ConfigFilePerm;
3403 }
3404
3405 /*
3406 * Open the request file and new config file...
3407 */
3408
3409 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
3410 {
3411 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\" - %s",
3412 con->filename, strerror(errno));
3413 return (HTTP_SERVER_ERROR);
3414 }
3415
3416 if ((out = cupsFileOpen(newfile, "wb")) == NULL)
3417 {
3418 cupsFileClose(in);
3419 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open config file \"%s\" - %s",
3420 newfile, strerror(errno));
3421 return (HTTP_SERVER_ERROR);
3422 }
3423
3424 fchmod(cupsFileNumber(out), confinfo.st_mode);
3425 fchown(cupsFileNumber(out), confinfo.st_uid, confinfo.st_gid);
3426
3427 /*
3428 * Copy from the request to the new config file...
3429 */
3430
3431 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
3432 if (cupsFileWrite(out, buffer, bytes) < bytes)
3433 {
3434 cupsdLogMessage(CUPSD_LOG_ERROR,
3435 "Unable to copy to config file \"%s\" - %s",
3436 newfile, strerror(errno));
3437
3438 cupsFileClose(in);
3439 cupsFileClose(out);
3440 unlink(newfile);
3441
3442 return (HTTP_SERVER_ERROR);
3443 }
3444
3445 /*
3446 * Close the files...
3447 */
3448
3449 cupsFileClose(in);
3450 if (cupsFileClose(out))
3451 {
3452 cupsdLogMessage(CUPSD_LOG_ERROR,
3453 "Error file closing config file \"%s\" - %s",
3454 newfile, strerror(errno));
3455
3456 unlink(newfile);
3457
3458 return (HTTP_SERVER_ERROR);
3459 }
3460
3461 /*
3462 * Remove the request file...
3463 */
3464
3465 unlink(con->filename);
3466 cupsdClearString(&con->filename);
3467
3468 /*
3469 * Unlink the old backup, rename the current config file to the backup
3470 * filename, and rename the new config file to the config file name...
3471 */
3472
3473 if (unlink(oldfile))
3474 if (errno != ENOENT)
3475 {
3476 cupsdLogMessage(CUPSD_LOG_ERROR,
3477 "Unable to remove backup config file \"%s\" - %s",
3478 oldfile, strerror(errno));
3479
3480 unlink(newfile);
3481
3482 return (HTTP_SERVER_ERROR);
3483 }
3484
3485 if (rename(conffile, oldfile))
3486 if (errno != ENOENT)
3487 {
3488 cupsdLogMessage(CUPSD_LOG_ERROR,
3489 "Unable to rename old config file \"%s\" - %s",
3490 conffile, strerror(errno));
3491
3492 unlink(newfile);
3493
3494 return (HTTP_SERVER_ERROR);
3495 }
3496
3497 if (rename(newfile, conffile))
3498 {
3499 cupsdLogMessage(CUPSD_LOG_ERROR,
3500 "Unable to rename new config file \"%s\" - %s",
3501 newfile, strerror(errno));
3502
3503 rename(oldfile, conffile);
3504 unlink(newfile);
3505
3506 return (HTTP_SERVER_ERROR);
3507 }
3508
3509 /*
3510 * If the cupsd.conf file was updated, set the NeedReload flag...
3511 */
3512
3513 if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
3514 NeedReload = RELOAD_CUPSD;
3515 else
3516 NeedReload = RELOAD_ALL;
3517
3518 ReloadTime = time(NULL);
3519
3520 /*
3521 * Return that the file was created successfully...
3522 */
3523
3524 return (HTTP_CREATED);
3525}
3526
3527
e1d6a774 3528/*
3529 * 'is_cgi()' - Is the resource a CGI script/program?
3530 */
3531
3532static int /* O - 1 = CGI, 0 = file */
3533is_cgi(cupsd_client_t *con, /* I - Client connection */
3534 const char *filename, /* I - Real filename */
3535 struct stat *filestats, /* I - File information */
3536 mime_type_t *type) /* I - MIME type */
3537{
3538 const char *options; /* Options on URL */
3539
3540
3541 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3542 "is_cgi(con=%p, filename=\"%s\", filestats=%p, type=%s/%s)\n",
3543 con, filename, filestats, type ? type->super : "unknown",
3544 type ? type->type : "unknown");
3545
3546 /*
3547 * Get the options, if any...
3548 */
3549
3550 if ((options = strchr(con->uri, '?')) != NULL)
b86bc4cf 3551 {
e1d6a774 3552 options ++;
3553
b86bc4cf 3554 if (strchr(options, '='))
3555 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", options);
3556 }
3557
e1d6a774 3558 /*
3559 * Check for known types...
3560 */
3561
3562 if (!type || strcasecmp(type->super, "application"))
3563 {
3564 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3565 return (0);
3566 }
3567
3568 if (!strcasecmp(type->type, "x-httpd-cgi") &&
3569 (filestats->st_mode & 0111))
3570 {
3571 /*
3572 * "application/x-httpd-cgi" is a CGI script.
3573 */
3574
3575 cupsdSetString(&con->command, filename);
3576
3577 filename = strrchr(filename, '/') + 1; /* Filename always absolute */
3578
3579 cupsdSetString(&con->options, options);
3580
3581 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3582 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3583 con->command, con->options);
3584
3585 return (1);
3586 }
3587#ifdef HAVE_JAVA
3588 else if (!strcasecmp(type->type, "x-httpd-java"))
3589 {
3590 /*
3591 * "application/x-httpd-java" is a Java servlet.
3592 */
3593
3594 cupsdSetString(&con->command, CUPS_JAVA);
3595
3596 if (options)
b94498cf 3597 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3598 else
b94498cf 3599 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3600
3601 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3602 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3603 con->command, con->options);
3604
3605 return (1);
3606 }
3607#endif /* HAVE_JAVA */
3608#ifdef HAVE_PERL
3609 else if (!strcasecmp(type->type, "x-httpd-perl"))
3610 {
3611 /*
3612 * "application/x-httpd-perl" is a Perl page.
3613 */
3614
3615 cupsdSetString(&con->command, CUPS_PERL);
3616
3617 if (options)
b94498cf 3618 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3619 else
b94498cf 3620 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3621
3622 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3623 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3624 con->command, con->options);
3625
3626 return (1);
3627 }
3628#endif /* HAVE_PERL */
3629#ifdef HAVE_PHP
3630 else if (!strcasecmp(type->type, "x-httpd-php"))
3631 {
3632 /*
3633 * "application/x-httpd-php" is a PHP page.
3634 */
3635
3636 cupsdSetString(&con->command, CUPS_PHP);
3637
3638 if (options)
b94498cf 3639 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3640 else
b94498cf 3641 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3642
3643 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3644 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3645 con->command, con->options);
3646
3647 return (1);
3648 }
3649#endif /* HAVE_PHP */
3650#ifdef HAVE_PYTHON
3651 else if (!strcasecmp(type->type, "x-httpd-python"))
3652 {
3653 /*
3654 * "application/x-httpd-python" is a Python page.
3655 */
3656
3657 cupsdSetString(&con->command, CUPS_PYTHON);
3658
3659 if (options)
b94498cf 3660 cupsdSetStringf(&con->options, " %s %s", filename, options);
e1d6a774 3661 else
b94498cf 3662 cupsdSetStringf(&con->options, " %s", filename);
e1d6a774 3663
3664 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3665 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3666 con->command, con->options);
3667
3668 return (1);
3669 }
3670#endif /* HAVE_PYTHON */
3671
3672 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3673
3674 return (0);
3675}
3676
3677
ef416fc2 3678/*
3679 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3680 */
3681
3682static int /* O - 0 if relative, 1 if absolute */
3683is_path_absolute(const char *path) /* I - Input path */
3684{
3685 /*
3686 * Check for a leading slash...
3687 */
3688
3689 if (path[0] != '/')
3690 return (0);
3691
3692 /*
3693 * Check for "/.." in the path...
3694 */
3695
3696 while ((path = strstr(path, "/..")) != NULL)
3697 {
3698 if (!path[3] || path[3] == '/')
3699 return (0);
3700
3701 path ++;
3702 }
3703
3704 /*
3705 * If we haven't found any relative paths, return 1 indicating an
3706 * absolute path...
3707 */
3708
3709 return (1);
3710}
3711
3712
8ca02f3c 3713#ifdef HAVE_SSL
4744bd90 3714/*
3715 * 'make_certificate()' - Make a self-signed SSL/TLS certificate.
3716 */
3717
8ca02f3c 3718static int /* O - 1 on success, 0 on failure */
b86bc4cf 3719make_certificate(cupsd_client_t *con) /* I - Client connection */
4744bd90 3720{
8ca02f3c 3721#if defined(HAVE_LIBSSL) && defined(HAVE_WAITPID)
d09495fa 3722 int pid, /* Process ID of command */
3723 status; /* Status of command */
3724 char command[1024], /* Command */
f7deaa1a 3725 *argv[12], /* Command-line arguments */
d09495fa 3726 *envp[MAX_ENV + 1], /* Environment variables */
3727 home[1024], /* HOME environment variable */
3728 infofile[1024], /* Type-in information for cert */
3729 seedfile[1024]; /* Random number seed file */
3730 int envc, /* Number of environment variables */
3731 bytes; /* Bytes written */
3732 cups_file_t *fp; /* Seed/info file */
3733 int infofd; /* Info file descriptor */
8ca02f3c 3734
3735
3736 /*
d09495fa 3737 * Run the "openssl" command to seed the random number generator and
3738 * generate a self-signed certificate that is good for 10 years:
3739 *
3740 * openssl rand -rand seedfile 1
8ca02f3c 3741 *
3742 * openssl req -new -x509 -keyout ServerKey \
3743 * -out ServerCertificate -days 3650 -nodes
d09495fa 3744 *
3745 * The seeding step is crucial in ensuring that the openssl command
3746 * does not block on systems without sufficient entropy...
8ca02f3c 3747 */
3748
3749 if (!cupsFileFind("openssl", getenv("PATH"), 1, command, sizeof(command)))
3750 {
3751 cupsdLogMessage(CUPSD_LOG_ERROR,
3752 "No SSL certificate and openssl command not found!");
3753 return (0);
3754 }
3755
d09495fa 3756 if (access("/dev/urandom", 0))
3757 {
3758 /*
3759 * If the system doesn't provide /dev/urandom, then any random source
3760 * will probably be blocking-style, so generate some random data to
3761 * use as a seed for the certificate. Note that we have already
3762 * seeded the random number generator in cupsdInitCerts()...
3763 */
3764
3765 cupsdLogMessage(CUPSD_LOG_INFO,
3766 "Seeding the random number generator...");
3767
3768 snprintf(home, sizeof(home), "HOME=%s", TempDir);
3769
3770 /*
3771 * Write the seed file...
3772 */
3773
3774 if ((fp = cupsTempFile2(seedfile, sizeof(seedfile))) == NULL)
3775 {
3776 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create seed file %s - %s",
3777 seedfile, strerror(errno));
3778 return (0);
3779 }
3780
3781 for (bytes = 0; bytes < 262144; bytes ++)
3782 cupsFilePutChar(fp, random());
3783
3784 cupsFileClose(fp);
3785
3786 /*
3787 * Run the openssl command to seed its random number generator...
3788 */
3789
3790 argv[0] = "openssl";
3791 argv[1] = "rand";
3792 argv[2] = "-rand";
3793 argv[3] = seedfile;
3794 argv[4] = "1";
3795 argv[5] = NULL;
3796
3797 envc = cupsdLoadEnv(envp, MAX_ENV);
3798 envp[envc++] = home;
3799 envp[envc] = NULL;
3800
f7deaa1a 3801 if (!cupsdStartProcess(command, argv, envp, -1, -1, -1, -1, -1, 1, &pid))
d09495fa 3802 {
3803 unlink(seedfile);
3804 return (0);
3805 }
3806
3807 while (waitpid(pid, &status, 0) < 0)
3808 if (errno != EINTR)
3809 {
3810 status = 1;
3811 break;
3812 }
3813
3814 cupsdFinishProcess(pid, command, sizeof(command));
3815
3816 /*
3817 * Remove the seed file, as it is no longer needed...
3818 */
3819
3820 unlink(seedfile);
3821
3822 if (status)
3823 {
3824 if (WIFEXITED(status))
3825 cupsdLogMessage(CUPSD_LOG_ERROR,
3826 "Unable to seed random number generator - "
3827 "the openssl command stopped with status %d!",
3828 WEXITSTATUS(status));
3829 else
3830 cupsdLogMessage(CUPSD_LOG_ERROR,
3831 "Unable to seed random number generator - "
3832 "the openssl command crashed on signal %d!",
3833 WTERMSIG(status));
3834
3835 return (0);
3836 }
3837 }
3838
3839 /*
3840 * Create a file with the certificate information fields...
3841 *
3842 * Note: This assumes that the default questions are asked by the openssl
3843 * command...
3844 */
3845
3846 if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
3847 {
3848 cupsdLogMessage(CUPSD_LOG_ERROR,
3849 "Unable to create certificate information file %s - %s",
3850 infofile, strerror(errno));
3851 return (0);
3852 }
3853
3854 cupsFilePrintf(fp, ".\n.\n.\n%s\n.\n%s\n%s\n",
3855 ServerName, ServerName, ServerAdmin);
3856 cupsFileClose(fp);
3857
8ca02f3c 3858 cupsdLogMessage(CUPSD_LOG_INFO,
3859 "Generating SSL server key and certificate...");
3860
3861 argv[0] = "openssl";
3862 argv[1] = "req";
3863 argv[2] = "-new";
3864 argv[3] = "-x509";
3865 argv[4] = "-keyout";
3866 argv[5] = ServerKey;
3867 argv[6] = "-out";
3868 argv[7] = ServerCertificate;
3869 argv[8] = "-days";
3870 argv[9] = "3650";
3871 argv[10] = "-nodes";
3872 argv[11] = NULL;
3873
3874 cupsdLoadEnv(envp, MAX_ENV);
3875
d09495fa 3876 infofd = open(infofile, O_RDONLY);
3877
f7deaa1a 3878 if (!cupsdStartProcess(command, argv, envp, infofd, -1, -1, -1, -1, 1, &pid))
d09495fa 3879 {
3880 close(infofd);
3881 unlink(infofile);
8ca02f3c 3882 return (0);
d09495fa 3883 }
3884
3885 close(infofd);
3886 unlink(infofile);
8ca02f3c 3887
3888 while (waitpid(pid, &status, 0) < 0)
3889 if (errno != EINTR)
3890 {
3891 status = 1;
3892 break;
3893 }
3894
3895 cupsdFinishProcess(pid, command, sizeof(command));
3896
3897 if (status)
3898 {
3899 if (WIFEXITED(status))
3900 cupsdLogMessage(CUPSD_LOG_ERROR,
3901 "Unable to create SSL server key and certificate - "
3902 "the openssl command stopped with status %d!",
3903 WEXITSTATUS(status));
3904 else
3905 cupsdLogMessage(CUPSD_LOG_ERROR,
3906 "Unable to create SSL server key and certificate - "
3907 "the openssl command crashed on signal %d!",
3908 WTERMSIG(status));
3909 }
3910 else
3911 {
3912 cupsdLogMessage(CUPSD_LOG_INFO, "Created SSL server key file \"%s\"...",
3913 ServerKey);
3914 cupsdLogMessage(CUPSD_LOG_INFO,
3915 "Created SSL server certificate file \"%s\"...",
3916 ServerCertificate);
3917 }
3918
3919 return (!status);
3920
3921#elif defined(HAVE_GNUTLS)
4744bd90 3922 gnutls_x509_crt crt; /* Self-signed certificate */
3923 gnutls_x509_privkey key; /* Encryption key */
3924 cups_lang_t *language; /* Default language info */
3925 cups_file_t *fp; /* Key/cert file */
3926 unsigned char buffer[8192]; /* Buffer for x509 data */
3927 size_t bytes; /* Number of bytes of data */
3928 unsigned char serial[4]; /* Serial number buffer */
3929 time_t curtime; /* Current time */
3930 int result; /* Result of GNU TLS calls */
3931
3932
3933 /*
3934 * Create the encryption key...
3935 */
3936
8ca02f3c 3937 cupsdLogMessage(CUPSD_LOG_INFO, "Generating SSL server key...");
4744bd90 3938
3939 gnutls_x509_privkey_init(&key);
3940 gnutls_x509_privkey_generate(key, GNUTLS_PK_RSA, 2048, 0);
3941
3942 /*
3943 * Save it...
3944 */
3945
3946 bytes = sizeof(buffer);
3947
3948 if ((result = gnutls_x509_privkey_export(key, GNUTLS_X509_FMT_PEM,
3949 buffer, &bytes)) < 0)
3950 {
8ca02f3c 3951 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to export SSL server key - %s",
4744bd90 3952 gnutls_strerror(result));
3953 gnutls_x509_privkey_deinit(key);
8ca02f3c 3954 return (0);
4744bd90 3955 }
3956 else if ((fp = cupsFileOpen(ServerKey, "w")) != NULL)
3957 {
3958 cupsFileWrite(fp, (char *)buffer, bytes);
3959 cupsFileClose(fp);
3960
8ca02f3c 3961 cupsdLogMessage(CUPSD_LOG_INFO, "Created SSL server key file \"%s\"...",
4744bd90 3962 ServerKey);
3963 }
3964 else
3965 {
3966 cupsdLogMessage(CUPSD_LOG_ERROR,
8ca02f3c 3967 "Unable to create SSL server key file \"%s\" - %s",
4744bd90 3968 ServerKey, strerror(errno));
3969 gnutls_x509_privkey_deinit(key);
8ca02f3c 3970 return (0);
4744bd90 3971 }
3972
3973 /*
3974 * Create the self-signed certificate...
3975 */
3976
8ca02f3c 3977 cupsdLogMessage(CUPSD_LOG_INFO, "Generating self-signed SSL certificate...");
4744bd90 3978
3979 language = cupsLangDefault();
3980 curtime = time(NULL);
3981 serial[0] = curtime >> 24;
3982 serial[1] = curtime >> 16;
3983 serial[2] = curtime >> 8;
3984 serial[3] = curtime;
3985
3986 gnutls_x509_crt_init(&crt);
3987 if (strlen(language->language) == 5)
3988 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3989 language->language + 3, 2);
3990 else
3991 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3992 "US", 2);
3993 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COMMON_NAME, 0,
3994 ServerName, strlen(ServerName));
3995 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
3996 ServerName, strlen(ServerName));
3997 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME,
3998 0, "Unknown", 7);
3999 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0,
4000 "Unknown", 7);
4001 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_LOCALITY_NAME, 0,
4002 "Unknown", 7);
4003 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_PKCS9_EMAIL, 0,
4004 ServerAdmin, strlen(ServerAdmin));
4005 gnutls_x509_crt_set_key(crt, key);
4006 gnutls_x509_crt_set_serial(crt, serial, sizeof(serial));
4007 gnutls_x509_crt_set_activation_time(crt, curtime);
4008 gnutls_x509_crt_set_expiration_time(crt, curtime + 10 * 365 * 86400);
4009 gnutls_x509_crt_set_ca_status(crt, 0);
4010 gnutls_x509_crt_set_subject_alternative_name(crt, GNUTLS_SAN_DNSNAME,
4011 ServerName);
4012 gnutls_x509_crt_set_key_purpose_oid(crt, GNUTLS_KP_TLS_WWW_SERVER, 0);
4013 gnutls_x509_crt_set_key_usage(crt, GNUTLS_KEY_KEY_ENCIPHERMENT);
4014 gnutls_x509_crt_set_version(crt, 3);
4015
4016 bytes = sizeof(buffer);
4017 if (gnutls_x509_crt_get_key_id(crt, 0, buffer, &bytes) >= 0)
4018 gnutls_x509_crt_set_subject_key_id(crt, buffer, bytes);
4019
4020 gnutls_x509_crt_sign(crt, crt, key);
4021
4022 /*
4023 * Save it...
4024 */
4025
4026 bytes = sizeof(buffer);
4027 if ((result = gnutls_x509_crt_export(crt, GNUTLS_X509_FMT_PEM,
4028 buffer, &bytes)) < 0)
4029 cupsdLogMessage(CUPSD_LOG_ERROR,
8ca02f3c 4030 "Unable to export SSL server certificate - %s",
4744bd90 4031 gnutls_strerror(result));
4032 else if ((fp = cupsFileOpen(ServerCertificate, "w")) != NULL)
4033 {
4034 cupsFileWrite(fp, (char *)buffer, bytes);
4035 cupsFileClose(fp);
4036
4037 cupsdLogMessage(CUPSD_LOG_INFO,
8ca02f3c 4038 "Created SSL server certificate file \"%s\"...",
4744bd90 4039 ServerCertificate);
4040 }
4041 else
4042 cupsdLogMessage(CUPSD_LOG_ERROR,
8ca02f3c 4043 "Unable to create SSL server certificate file \"%s\" - %s",
4744bd90 4044 ServerCertificate, strerror(errno));
4045
4046 /*
4047 * Cleanup...
4048 */
4049
4050 gnutls_x509_crt_deinit(crt);
4051 gnutls_x509_privkey_deinit(key);
8ca02f3c 4052
4053 return (1);
4054
4055#elif defined(HAVE_CDSASSL) && defined(HAVE_WAITPID)
b86bc4cf 4056 int pid, /* Process ID of command */
4057 status; /* Status of command */
4058 char command[1024], /* Command */
4059 *argv[4], /* Command-line arguments */
4060 *envp[MAX_ENV + 1], /* Environment variables */
4061 keychain[1024], /* Keychain argument */
4062 infofile[1024]; /* Type-in information for cert */
4063 cups_file_t *fp; /* Seed/info file */
4064 int infofd; /* Info file descriptor */
8ca02f3c 4065
4066
4067 /*
b86bc4cf 4068 * Run the "certtool" command to generate a self-signed certificate...
8ca02f3c 4069 */
4070
4071 if (!cupsFileFind("certtool", getenv("PATH"), 1, command, sizeof(command)))
4072 {
4073 cupsdLogMessage(CUPSD_LOG_ERROR,
4074 "No SSL certificate and certtool command not found!");
4075 return (0);
4076 }
4077
b86bc4cf 4078 /*
4079 * Create a file with the certificate information fields...
4080 *
4081 * Note: This assumes that the default questions are asked by the certtool
4082 * command...
4083 */
4084
4085 if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
4086 {
4087 cupsdLogMessage(CUPSD_LOG_ERROR,
4088 "Unable to create certificate information file %s - %s",
4089 infofile, strerror(errno));
4090 return (0);
4091 }
4092
4093 cupsFilePrintf(fp, "%s\nr\n\ny\nb\ns\ny\n%s\n\n\n\n\n%s\ny\n",
4094 con->servername, con->servername, ServerAdmin);
4095 cupsFileClose(fp);
4096
8ca02f3c 4097 cupsdLogMessage(CUPSD_LOG_INFO,
4098 "Generating SSL server key and certificate...");
4099
4100 snprintf(keychain, sizeof(keychain), "k=%s", ServerCertificate);
4101
4102 argv[0] = "certtool";
4103 argv[1] = "c";
b86bc4cf 4104 argv[2] = keychain;
4105 argv[3] = NULL;
8ca02f3c 4106
4107 cupsdLoadEnv(envp, MAX_ENV);
4108
b86bc4cf 4109 infofd = open(infofile, O_RDONLY);
4110
f7deaa1a 4111 if (!cupsdStartProcess(command, argv, envp, infofd, -1, -1, -1, -1, 1, &pid))
b86bc4cf 4112 {
4113 close(infofd);
4114 unlink(infofile);
8ca02f3c 4115 return (0);
b86bc4cf 4116 }
4117
4118 close(infofd);
4119 unlink(infofile);
8ca02f3c 4120
4121 while (waitpid(pid, &status, 0) < 0)
4122 if (errno != EINTR)
4123 {
4124 status = 1;
4125 break;
4126 }
4127
4128 cupsdFinishProcess(pid, command, sizeof(command));
4129
4130 if (status)
4131 {
4132 if (WIFEXITED(status))
4133 cupsdLogMessage(CUPSD_LOG_ERROR,
4134 "Unable to create SSL server key and certificate - "
4135 "the certtool command stopped with status %d!",
4136 WEXITSTATUS(status));
4137 else
4138 cupsdLogMessage(CUPSD_LOG_ERROR,
4139 "Unable to create SSL server key and certificate - "
4140 "the certtool command crashed on signal %d!",
4141 WTERMSIG(status));
4142 }
4143 else
4144 {
4145 cupsdLogMessage(CUPSD_LOG_INFO,
4146 "Created SSL server certificate file \"%s\"...",
4147 ServerCertificate);
4148 }
4149
4150 return (!status);
4151
4152#else
4153 return (0);
4154#endif /* HAVE_LIBSSL && HAVE_WAITPID */
4744bd90 4155}
8ca02f3c 4156#endif /* HAVE_SSL */
4744bd90 4157
4158
ef416fc2 4159/*
4160 * 'pipe_command()' - Pipe the output of a command to the remote client.
4161 */
4162
4163static int /* O - Process ID */
4164pipe_command(cupsd_client_t *con, /* I - Client connection */
4165 int infile, /* I - Standard input for command */
4166 int *outfile, /* O - Standard output for command */
4167 char *command, /* I - Command to run */
4168 char *options, /* I - Options for command */
4169 int root) /* I - Run as root? */
4170{
4171 int i; /* Looping var */
4172 int pid; /* Process ID */
b423cd4c 4173 char *commptr, /* Command string pointer */
4174 commch; /* Command string character */
ef416fc2 4175 char *uriptr; /* URI string pointer */
4176 int fds[2]; /* Pipe FDs */
4177 int argc; /* Number of arguments */
4178 int envc; /* Number of environment variables */
4179 char argbuf[10240], /* Argument buffer */
4180 *argv[100], /* Argument strings */
b94498cf 4181 *envp[MAX_ENV + 20]; /* Environment variables */
4182 char auth_type[256], /* AUTH_TYPE environment variable */
4183 content_length[1024], /* CONTENT_LENGTH environment variable */
ef416fc2 4184 content_type[1024], /* CONTENT_TYPE environment variable */
4185 http_cookie[32768], /* HTTP_COOKIE environment variable */
f7deaa1a 4186 http_referer[1024], /* HTTP_REFERER environment variable */
ef416fc2 4187 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
4188 lang[1024], /* LANG environment variable */
b423cd4c 4189 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 4190 remote_addr[1024], /* REMOTE_ADDR environment variable */
4191 remote_host[1024], /* REMOTE_HOST environment variable */
4192 remote_user[1024], /* REMOTE_USER environment variable */
b94498cf 4193 script_filename[1024], /* SCRIPT_FILENAME environment variable */
ef416fc2 4194 script_name[1024], /* SCRIPT_NAME environment variable */
4195 server_name[1024], /* SERVER_NAME environment variable */
4196 server_port[1024]; /* SERVER_PORT environment variable */
4197
4198
4199 /*
4200 * Parse a copy of the options string, which is of the form:
4201 *
b423cd4c 4202 * argument+argument+argument
4203 * ?argument+argument+argument
4204 * param=value&param=value
4205 * ?param=value&param=value
4206 * /name?argument+argument+argument
4207 * /name?param=value&param=value
ef416fc2 4208 *
4209 * If the string contains an "=" character after the initial name,
4210 * then we treat it as a HTTP GET form request and make a copy of
4211 * the remaining string for the environment variable.
4212 *
4213 * The string is always parsed out as command-line arguments, to
4214 * be consistent with Apache...
4215 */
4216
4217 cupsdLogMessage(CUPSD_LOG_DEBUG2,
4218 "pipe_command: command=\"%s\", options=\"%s\"",
f301802f 4219 command, options ? options : "(null)");
ef416fc2 4220
b86bc4cf 4221 argv[0] = command;
ef416fc2 4222
b423cd4c 4223 if (options)
4224 strlcpy(argbuf, options, sizeof(argbuf));
4225 else
4226 argbuf[0] = '\0';
4227
4228 if (argbuf[0] == '/')
ef416fc2 4229 {
4230 /*
b423cd4c 4231 * Found some trailing path information, set PATH_INFO...
ef416fc2 4232 */
4233
b423cd4c 4234 if ((commptr = strchr(argbuf, '?')) == NULL)
4235 commptr = argbuf + strlen(argbuf);
ef416fc2 4236
b423cd4c 4237 commch = *commptr;
4238 *commptr = '\0';
4239 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
4240 *commptr = commch;
4241 }
4242 else
4243 {
4244 commptr = argbuf;
4245 path_info[0] = '\0';
b94498cf 4246
4247 if (*commptr == ' ')
4248 commptr ++;
b423cd4c 4249 }
ef416fc2 4250
b86bc4cf 4251 cupsdLogMessage(CUPSD_LOG_INFO, "commptr=\"%s\"", commptr);
4252
4253 if (*commptr == '?' && con->operation == HTTP_GET && !con->query_string)
b423cd4c 4254 {
4255 commptr ++;
b86bc4cf 4256 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr);
b423cd4c 4257 }
ef416fc2 4258
b423cd4c 4259 argc = 1;
ef416fc2 4260
b423cd4c 4261 if (*commptr)
4262 {
4263 argv[argc ++] = commptr;
ef416fc2 4264
b423cd4c 4265 for (; *commptr && argc < 99; commptr ++)
4266 {
ef416fc2 4267 /*
b423cd4c 4268 * Break arguments whenever we see a + or space...
ef416fc2 4269 */
4270
b423cd4c 4271 if (*commptr == ' ' || *commptr == '+')
4272 {
4273 while (*commptr == ' ' || *commptr == '+')
4274 *commptr++ = '\0';
ef416fc2 4275
b423cd4c 4276 /*
4277 * If we don't have a blank string, save it as another argument...
4278 */
ef416fc2 4279
b423cd4c 4280 if (*commptr)
4281 {
4282 argv[argc] = commptr;
4283 argc ++;
4284 }
4285 else
4286 break;
4287 }
4288 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
4289 isxdigit(commptr[2] & 255))
4290 {
4291 /*
4292 * Convert the %xx notation to the individual character.
4293 */
ef416fc2 4294
b423cd4c 4295 if (commptr[1] >= '0' && commptr[1] <= '9')
4296 *commptr = (commptr[1] - '0') << 4;
4297 else
4298 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
ef416fc2 4299
b423cd4c 4300 if (commptr[2] >= '0' && commptr[2] <= '9')
4301 *commptr |= commptr[2] - '0';
4302 else
4303 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 4304
b423cd4c 4305 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 4306
b423cd4c 4307 /*
4308 * Check for a %00 and break if that is the case...
4309 */
ef416fc2 4310
b423cd4c 4311 if (!*commptr)
4312 break;
4313 }
ef416fc2 4314 }
4315 }
4316
4317 argv[argc] = NULL;
4318
ef416fc2 4319 /*
4320 * Setup the environment variables as needed...
4321 */
4322
b94498cf 4323 if (con->username[0])
4324 {
4325 snprintf(auth_type, sizeof(auth_type), "AUTH_TYPE=%s",
4326 httpGetField(HTTP(con), HTTP_FIELD_AUTHORIZATION));
4327
4328 if ((uriptr = strchr(auth_type + 10, ' ')) != NULL)
4329 *uriptr = '\0';
4330 }
4331 else
4332 auth_type[0] = '\0';
4333
ef416fc2 4334 if (con->language)
4335 snprintf(lang, sizeof(lang), "LANG=%s.UTF-8", con->language->language);
4336 else
4337 strcpy(lang, "LANG=C");
4338
4339 strcpy(remote_addr, "REMOTE_ADDR=");
4340 httpAddrString(con->http.hostaddr, remote_addr + 12,
4341 sizeof(remote_addr) - 12);
4342
4343 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
4344 con->http.hostname);
4345
4346 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
4347 if ((uriptr = strchr(script_name, '?')) != NULL)
4348 *uriptr = '\0';
4349
b94498cf 4350 snprintf(script_filename, sizeof(script_filename), "SCRIPT_FILENAME=%s%s",
4351 DocumentRoot, script_name + 12);
4352
ef416fc2 4353 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
4354
4355 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
4356 con->servername);
4357
4358 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
4359
b94498cf 4360 if (auth_type[0])
4361 envp[envc ++] = auth_type;
4362
ef416fc2 4363 envp[envc ++] = lang;
4364 envp[envc ++] = "REDIRECT_STATUS=1";
b94498cf 4365 envp[envc ++] = "GATEWAY_INTERFACE=CGI/1.1";
ef416fc2 4366 envp[envc ++] = server_name;
4367 envp[envc ++] = server_port;
4368 envp[envc ++] = remote_addr;
4369 envp[envc ++] = remote_host;
4370 envp[envc ++] = script_name;
b94498cf 4371 envp[envc ++] = script_filename;
ef416fc2 4372
b423cd4c 4373 if (path_info[0])
4374 envp[envc ++] = path_info;
4375
ef416fc2 4376 if (con->username[0])
4377 {
4378 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
4379
4380 envp[envc ++] = remote_user;
4381 }
4382
4383 if (con->http.version == HTTP_1_1)
4384 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
4385 else if (con->http.version == HTTP_1_0)
4386 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
4387 else
4388 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
4389
4390 if (con->http.cookie)
4391 {
4392 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
4393 con->http.cookie);
4394 envp[envc ++] = http_cookie;
4395 }
4396
4397 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
4398 {
4399 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
4400 con->http.fields[HTTP_FIELD_USER_AGENT]);
4401 envp[envc ++] = http_user_agent;
4402 }
4403
f7deaa1a 4404 if (con->http.fields[HTTP_FIELD_REFERER][0])
4405 {
4406 snprintf(http_referer, sizeof(http_referer), "HTTP_REFERER=%s",
4407 con->http.fields[HTTP_FIELD_REFERER]);
4408 envp[envc ++] = http_referer;
4409 }
4410
ef416fc2 4411 if (con->operation == HTTP_GET)
4412 {
ef416fc2 4413 envp[envc ++] = "REQUEST_METHOD=GET";
4414
b86bc4cf 4415 if (con->query_string)
ef416fc2 4416 {
4417 /*
4418 * Add GET form variables after ?...
4419 */
4420
b86bc4cf 4421 envp[envc ++] = con->query_string;
ef416fc2 4422 }
4423 }
4424 else
4425 {
e1d6a774 4426 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
4427 CUPS_LLCAST con->bytes);
ef416fc2 4428 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
4429 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
4430
4431 envp[envc ++] = "REQUEST_METHOD=POST";
4432 envp[envc ++] = content_length;
4433 envp[envc ++] = content_type;
4434 }
4435
4436 /*
4437 * Tell the CGI if we are using encryption...
4438 */
4439
a74454a7 4440 if (con->http.tls)
ef416fc2 4441 envp[envc ++] = "HTTPS=ON";
4442
4443 /*
4444 * Terminate the environment array...
4445 */
4446
4447 envp[envc] = NULL;
4448
4449 if (LogLevel == CUPSD_LOG_DEBUG2)
4450 {
4451 for (i = 0; i < argc; i ++)
4452 cupsdLogMessage(CUPSD_LOG_DEBUG2,
4453 "pipe_command: argv[%d] = \"%s\"", i, argv[i]);
4454 for (i = 0; i < envc; i ++)
4455 cupsdLogMessage(CUPSD_LOG_DEBUG2,
4456 "pipe_command: envp[%d] = \"%s\"", i, envp[i]);
4457 }
4458
4459 /*
4460 * Create a pipe for the output...
4461 */
4462
4463 if (cupsdOpenPipe(fds))
4464 {
ef416fc2 4465 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create pipes for CGI %s - %s",
4466 argv[0], strerror(errno));
4467 return (0);
4468 }
4469
4470 /*
4471 * Then execute the command...
4472 */
4473
4474 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
f7deaa1a 4475 -1, -1, root, &pid) < 0)
ef416fc2 4476 {
4477 /*
4478 * Error - can't fork!
4479 */
4480
4481 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to fork for CGI %s - %s", argv[0],
4482 strerror(errno));
4483
4484 cupsdClosePipe(fds);
4485 pid = 0;
4486 }
4487 else
4488 {
4489 /*
4490 * Fork successful - return the PID...
4491 */
4492
4493 if (con->username[0])
4494 cupsdAddCert(pid, con->username);
4495
355e94dc
MS		 4496 cupsdLogMessage(CUPSD_LOG_DEBUG, "[CGI] %s started - PID = %d",
4497 command, pid);
ef416fc2 4498
4499 *outfile = fds[0];
4500 close(fds[1]);
4501 }
4502
ef416fc2 4503 return (pid);
4504}
4505
4506
4507/*
a74454a7 4508 * 'write_file()' - Send a file via HTTP.
e1d6a774 4509 */
4510
4511static int /* O - 0 on failure, 1 on success */
a74454a7 4512write_file(cupsd_client_t *con, /* I - Client connection */
4513 http_status_t code, /* I - HTTP status */
4514 char *filename, /* I - Filename */
4515 char *type, /* I - File type */
4516 struct stat *filestats) /* O - File information */
e1d6a774 4517{
4518 con->file = open(filename, O_RDONLY);
4519
355e94dc 4520 cupsdLogMessage(CUPSD_LOG_DEBUG2, "write_file: %d file=%d", con->http.fd,
e1d6a774 4521 con->file);
4522
4523 if (con->file < 0)
4524 return (0);
4525
4526 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
4527
4528 con->pipe_pid = 0;
4529
f899b121 4530 if (!cupsdSendHeader(con, code, type, AUTH_NONE))
e1d6a774 4531 return (0);
4532
4533 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
4534 httpGetDateString(filestats->st_mtime)) < 0)
4535 return (0);
4536 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
4537 CUPS_LLCAST filestats->st_size) < 0)
4538 return (0);
4539 if (httpPrintf(HTTP(con), "\r\n") < 0)
4540 return (0);
4541
07725fee 4542 if (cupsdFlushHeader(con) < 0)
4543 return (0);
d09495fa 4544
e1d6a774 4545 con->http.data_encoding = HTTP_ENCODE_LENGTH;
4546 con->http.data_remaining = filestats->st_size;
4547
4548 if (con->http.data_remaining <= INT_MAX)
4549 con->http._data_remaining = con->http.data_remaining;
4550 else
4551 con->http._data_remaining = INT_MAX;
4552
f7deaa1a 4553 cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient,
4554 (cupsd_selfunc_t)cupsdWriteClient, con);
e1d6a774 4555
4556 return (1);
4557}
4558
4559
4560/*
f899b121 4561 * 'write_pipe()' - Flag that data is available on the CGI pipe.
4562 */
4563
4564static void
4565write_pipe(cupsd_client_t *con) /* I - Client connection */
4566{
4567 cupsdLogMessage(CUPSD_LOG_DEBUG2, "write_pipe: CGI output on fd %d...",
4568 con->file);
4569
4570 con->file_ready = 1;
4571
4572 cupsdRemoveSelect(con->file);
4573 cupsdAddSelect(con->http.fd, NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
4574}
4575
4576
4577/*
c24d2134 4578 * End of "$Id: client.c 6758 2007-08-02 00:13:44Z mike $".
ef416fc2 4579 */
Unnamed repository; edit this file 'description' to name the repository.