]> git.ipfire.org Git - thirdparty/cups.git/blame - scheduler/client.c
projects / thirdparty / cups.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Remove svn:keywords since they cause svn_load_dirs.pl to complain about every file.
[thirdparty/cups.git] / scheduler / client.c
CommitLineData
ef416fc2 1/*
c07d5b2d 2 * "$Id: client.c 181 2006-06-22 20:01:18Z jlovell $"
ef416fc2 3 *
4 * Client routines for the Common UNIX Printing System (CUPS) scheduler.
5 *
6 * Copyright 1997-2006 by Easy Software Products, all rights reserved.
7 *
8 * These coded instructions, statements, and computer programs are the
9 * property of Easy Software Products and are protected by Federal
10 * copyright law. Distribution and use rights are outlined in the file
11 * "LICENSE.txt" which should have been included with this file. If this
12 * file is missing or damaged please contact Easy Software Products
13 * at:
14 *
15 * Attn: CUPS Licensing Information
16 * Easy Software Products
17 * 44141 Airport View Drive, Suite 204
18 * Hollywood, Maryland 20636 USA
19 *
20 * Voice: (301) 373-9600
21 * EMail: cups-info@cups.org
22 * WWW: http://www.cups.org
23 *
24 * Contents:
25 *
26 * cupsdAcceptClient() - Accept a new client.
27 * cupsdCloseAllClients() - Close all remote clients immediately.
28 * cupsdCloseClient() - Close a remote client.
ef416fc2 29 * cupsdReadClient() - Read data from a client.
30 * cupsdSendCommand() - Send output from a command via HTTP.
31 * cupsdSendError() - Send an error message via HTTP.
ef416fc2 32 * cupsdSendHeader() - Send an HTTP request.
33 * cupsdUpdateCGI() - Read status messages from CGI scripts and programs.
34 * cupsdWriteClient() - Write data to a client as needed.
35 * check_if_modified() - Decode an "If-Modified-Since" line.
e1d6a774 36 * encrypt_client() - Enable encryption for the client...
ef416fc2 37 * get_cdsa_server_certs() - Convert a keychain name into the CFArrayRef
38 * required by SSLSetCertificate.
39 * get_file() - Get a filename and state info.
40 * install_conf_file() - Install a configuration file.
e1d6a774 41 * is_cgi() - Is the resource a CGI script/program?
ef416fc2 42 * is_path_absolute() - Is a path absolute and free of relative elements.
4744bd90 43 * make_certificate() - Make a self-signed SSL/TLS certificate.
ef416fc2 44 * pipe_command() - Pipe the output of a command to the remote client.
a74454a7 45 * write_file() - Send a file via HTTP.
ef416fc2 46 */
47
48/*
49 * Include necessary headers...
50 */
51
52#include <cups/http-private.h>
53#include "cupsd.h"
54
55#ifdef HAVE_CDSASSL
56# include <Security/Security.h>
ed486911 57# ifdef HAVE_SECBASEPRIV_H
58# include <Security/SecBasePriv.h>
59# else
60 extern const char *cssmErrorString(int error);
61# endif /* HAVE_SECBASEPRIV_H */
ef416fc2 62#endif /* HAVE_CDSASSL */
4744bd90 63#ifdef HAVE_GNUTLS
64# include <gnutls/x509.h>
65#endif /* HAVE_GNUTLS */
ef416fc2 66
67
68/*
69 * Local functions...
70 */
71
72static int check_if_modified(cupsd_client_t *con,
73 struct stat *filestats);
80ca4592 74#ifdef HAVE_SSL
e1d6a774 75static int encrypt_client(cupsd_client_t *con);
80ca4592 76#endif /* HAVE_SSL */
ef416fc2 77#ifdef HAVE_CDSASSL
78static CFArrayRef get_cdsa_server_certs(void);
79#endif /* HAVE_CDSASSL */
80static char *get_file(cupsd_client_t *con, struct stat *filestats,
81 char *filename, int len);
82static http_status_t install_conf_file(cupsd_client_t *con);
e1d6a774 83static int is_cgi(cupsd_client_t *con, const char *filename,
84 struct stat *filestats, mime_type_t *type);
ef416fc2 85static int is_path_absolute(const char *path);
4744bd90 86#ifdef HAVE_GNUTLS
87static void make_certificate(void);
88#endif /* HAVE_GNUTLS */
ef416fc2 89static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
90 char *command, char *options, int root);
a74454a7 91static int write_file(cupsd_client_t *con, http_status_t code,
92 char *filename, char *type,
93 struct stat *filestats);
ef416fc2 94
95
96/*
97 * 'cupsdAcceptClient()' - Accept a new client.
98 */
99
100void
101cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
102{
ef416fc2 103 int count; /* Count of connections on a host */
104 int val; /* Parameter value */
bd7854cb 105 cupsd_client_t *con, /* New client pointer */
106 *tempcon; /* Temporary client pointer */
ef416fc2 107 http_addrlist_t *addrlist, /* List of adddresses for host */
108 *addr; /* Current address */
109 socklen_t addrlen; /* Length of address */
110 char *hostname; /* Hostname for address */
111 http_addr_t temp; /* Temporary address variable */
112 static time_t last_dos = 0; /* Time of last DoS attack */
113
114
115 cupsdLogMessage(CUPSD_LOG_DEBUG2,
bd7854cb 116 "cupsdAcceptClient(lis=%p) %d Clients = %d",
117 lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 118
119 /*
120 * Make sure we don't have a full set of clients already...
121 */
122
bd7854cb 123 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 124 return;
125
126 /*
127 * Get a pointer to the next available client...
128 */
129
bd7854cb 130 if (!Clients)
131 Clients = cupsArrayNew(NULL, NULL);
132
133 if (!Clients)
134 return;
135
136 con = calloc(1, sizeof(cupsd_client_t));
ef416fc2 137
ef416fc2 138 con->http.activity = time(NULL);
139 con->file = -1;
140 con->http.hostaddr = &(con->clientaddr);
141
142 /*
143 * Accept the client and get the remote address...
144 */
145
146 addrlen = sizeof(http_addr_t);
147
148 if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
149 &addrlen)) < 0)
150 {
151 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
152 strerror(errno));
bd7854cb 153 free(con);
ef416fc2 154 return;
155 }
156
157#ifdef AF_INET6
158 if (lis->address.addr.sa_family == AF_INET6)
159 {
160 /*
161 * Save the connected port number...
162 */
163
164 con->http.hostaddr->ipv6.sin6_port = lis->address.ipv6.sin6_port;
165
166 /*
167 * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
168 * can more easily use...
169 */
170
171 if (con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
172 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
173 ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
174 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
175 }
176 else
177#endif /* AF_INET6 */
178 if (lis->address.addr.sa_family == AF_INET)
179 con->http.hostaddr->ipv4.sin_port = lis->address.ipv4.sin_port;
180
181 /*
182 * Check the number of clients on the same address...
183 */
184
bd7854cb 185 for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
186 tempcon;
187 tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
188 if (httpAddrEqual(tempcon->http.hostaddr, con->http.hostaddr))
ef416fc2 189 {
190 count ++;
191 if (count >= MaxClientsPerHost)
192 break;
193 }
194
195 if (count >= MaxClientsPerHost)
196 {
197 if ((time(NULL) - last_dos) >= 60)
198 {
199 last_dos = time(NULL);
200 cupsdLogMessage(CUPSD_LOG_WARN,
bd7854cb 201 "Possible DoS attack - more than %d clients connecting "
202 "from %s!",
203 MaxClientsPerHost, tempcon->http.hostname);
ef416fc2 204 }
205
206#ifdef WIN32
207 closesocket(con->http.fd);
208#else
209 close(con->http.fd);
210#endif /* WIN32 */
211
bd7854cb 212 free(con);
ef416fc2 213 return;
214 }
215
216 /*
217 * Get the hostname or format the IP address as needed...
218 */
219
220 if (httpAddrLocalhost(con->http.hostaddr))
221 {
222 /*
223 * Map accesses from the loopback interface to "localhost"...
224 */
225
226 strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
227 hostname = con->http.hostname;
228 }
229 else
230 {
231 /*
232 * Map accesses from the same host to the server name.
233 */
234
235 for (addr = ServerAddrs; addr; addr = addr->next)
236 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
237 break;
238
239 if (addr)
240 {
241 strlcpy(con->http.hostname, ServerName, sizeof(con->http.hostname));
242 hostname = con->http.hostname;
243 }
244 else if (HostNameLookups)
245 hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
246 sizeof(con->http.hostname));
247 else
248 {
249 hostname = NULL;
250 httpAddrString(con->http.hostaddr, con->http.hostname,
251 sizeof(con->http.hostname));
252 }
253 }
254
255 if (hostname == NULL && HostNameLookups == 2)
256 {
257 /*
258 * Can't have an unresolved IP address with double-lookups enabled...
259 */
260
261 cupsdLogMessage(CUPSD_LOG_DEBUG2,
262 "cupsdAcceptClient: Closing connection %d...",
263 con->http.fd);
264
265#ifdef WIN32
266 closesocket(con->http.fd);
267#else
268 close(con->http.fd);
269#endif /* WIN32 */
270
271 cupsdLogMessage(CUPSD_LOG_WARN,
272 "Name lookup failed - connection from %s closed!",
273 con->http.hostname);
bd7854cb 274
275 free(con);
ef416fc2 276 return;
277 }
278
279 if (HostNameLookups == 2)
280 {
281 /*
282 * Do double lookups as needed...
283 */
284
285 if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL)) != NULL)
286 {
287 /*
288 * See if the hostname maps to the same IP address...
289 */
290
291 for (addr = addrlist; addr; addr = addr->next)
292 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
293 break;
294 }
295 else
296 addr = NULL;
297
298 httpAddrFreeList(addrlist);
299
300 if (!addr)
301 {
302 /*
303 * Can't have a hostname that doesn't resolve to the same IP address
304 * with double-lookups enabled...
305 */
306
307 cupsdLogMessage(CUPSD_LOG_DEBUG2,
308 "cupsdAcceptClient: Closing connection %d...",
309 con->http.fd);
310
311#ifdef WIN32
312 closesocket(con->http.fd);
313#else
314 close(con->http.fd);
315#endif /* WIN32 */
316
317 cupsdLogMessage(CUPSD_LOG_WARN,
318 "IP lookup failed - connection from %s closed!",
319 con->http.hostname);
bd7854cb 320 free(con);
ef416fc2 321 return;
322 }
323 }
324
325#ifdef AF_INET6
326 if (con->http.hostaddr->addr.sa_family == AF_INET6)
327 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv6)",
328 con->http.fd, con->http.hostname,
329 ntohs(con->http.hostaddr->ipv6.sin6_port));
330 else
331#endif /* AF_INET6 */
332#ifdef AF_LOCAL
333 if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
334 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s (Domain)",
335 con->http.fd, con->http.hostname);
336 else
337#endif /* AF_LOCAL */
338 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv4)",
339 con->http.fd, con->http.hostname,
340 ntohs(con->http.hostaddr->ipv4.sin_port));
341
342 /*
343 * Get the local address the client connected to...
344 */
345
346 addrlen = sizeof(temp);
347 if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
348 {
349 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
350 strerror(errno));
351
352 strcpy(con->servername, "localhost");
353 con->serverport = LocalPort;
354 }
355 else
356 {
357#ifdef AF_INET6
358 if (temp.addr.sa_family == AF_INET6)
359 {
360 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
361 con->serverport = ntohs(lis->address.ipv6.sin6_port);
362 }
363 else
364#endif /* AF_INET6 */
365 if (temp.addr.sa_family == AF_INET)
366 {
367 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
368 con->serverport = ntohs(lis->address.ipv4.sin_port);
369 }
370 else
371 {
372 strcpy(con->servername, "localhost");
373 con->serverport = LocalPort;
374 }
375 }
376
bd7854cb 377 cupsArrayAdd(Clients, con);
378
ef416fc2 379 cupsdLogMessage(CUPSD_LOG_DEBUG2,
380 "cupsdAcceptClient: %d connected to server on %s:%d",
381 con->http.fd, con->servername, con->serverport);
382
383 /*
384 * Using TCP_NODELAY improves responsiveness, especially on systems
385 * with a slow loopback interface... Since we write large buffers
386 * when sending print files and requests, there shouldn't be any
387 * performance penalty for this...
388 */
389
390 val = 1;
391 setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
392
393 /*
394 * Close this file on all execs...
395 */
396
397 fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
398
399 /*
400 * Add the socket to the select() input mask.
401 */
402
403 cupsdLogMessage(CUPSD_LOG_DEBUG2,
404 "cupsdAcceptClient: Adding fd %d to InputSet...",
405 con->http.fd);
406 FD_SET(con->http.fd, InputSet);
407
ef416fc2 408 /*
409 * Temporarily suspend accept()'s until we lose a client...
410 */
411
bd7854cb 412 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 413 cupsdPauseListening();
414
415#ifdef HAVE_SSL
416 /*
417 * See if we are connecting on a secure port...
418 */
419
420 if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
421 {
422 /*
423 * https connection; go secure...
424 */
425
426 con->http.encryption = HTTP_ENCRYPT_ALWAYS;
427
e1d6a774 428 encrypt_client(con);
ef416fc2 429 }
430 else
431 con->auto_ssl = 1;
432#endif /* HAVE_SSL */
433}
434
435
436/*
437 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
438 */
439
440void
441cupsdCloseAllClients(void)
442{
bd7854cb 443 cupsd_client_t *con; /* Current client */
444
445
446 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
447 con;
448 con = (cupsd_client_t *)cupsArrayNext(Clients))
449 cupsdCloseClient(con);
ef416fc2 450}
451
452
453/*
454 * 'cupsdCloseClient()' - Close a remote client.
455 */
456
457int /* O - 1 if partial close, 0 if fully closed */
458cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
459{
460 int partial; /* Do partial close for SSL? */
461#ifdef HAVE_LIBSSL
462 SSL_CTX *context; /* Context for encryption */
463 SSL *conn; /* Connection for encryption */
464 unsigned long error; /* Error code */
465#elif defined(HAVE_GNUTLS)
89d46774 466 http_tls_t *conn; /* TLS connection information */
467 int error; /* Error code */
ef416fc2 468 gnutls_certificate_server_credentials *credentials;
469 /* TLS credentials */
89d46774 470# elif defined(HAVE_CDSASSL)
471 http_tls_t *conn; /* CDSA connection information */
ef416fc2 472#endif /* HAVE_LIBSSL */
473
474
475 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdCloseClient: %d", con->http.fd);
476
477 /*
478 * Flush pending writes before closing...
479 */
480
481 httpFlushWrite(HTTP(con));
482
483 partial = 0;
484
485#ifdef HAVE_SSL
486 /*
487 * Shutdown encryption as needed...
488 */
489
490 if (con->http.tls)
491 {
492 partial = 1;
493
494# ifdef HAVE_LIBSSL
495 conn = (SSL *)(con->http.tls);
496 context = SSL_get_SSL_CTX(conn);
497
498 switch (SSL_shutdown(conn))
499 {
500 case 1 :
501 cupsdLogMessage(CUPSD_LOG_INFO,
502 "cupsdCloseClient: SSL shutdown successful!");
503 break;
504 case -1 :
505 cupsdLogMessage(CUPSD_LOG_ERROR,
506 "cupsdCloseClient: Fatal error during SSL shutdown!");
507 default :
508 while ((error = ERR_get_error()) != 0)
509 cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdCloseClient: %s",
510 ERR_error_string(error, NULL));
511 break;
512 }
513
514 SSL_CTX_free(context);
515 SSL_free(conn);
516
517# elif defined(HAVE_GNUTLS)
518 conn = (http_tls_t *)(con->http.tls);
519 credentials = (gnutls_certificate_server_credentials *)(conn->credentials);
520
521 error = gnutls_bye(conn->session, GNUTLS_SHUT_WR);
522 switch (error)
523 {
524 case GNUTLS_E_SUCCESS:
525 cupsdLogMessage(CUPSD_LOG_INFO,
526 "cupsdCloseClient: SSL shutdown successful!");
527 break;
528 default:
529 cupsdLogMessage(CUPSD_LOG_ERROR,
530 "cupsdCloseClient: %s", gnutls_strerror(error));
531 break;
532 }
533
534 gnutls_deinit(conn->session);
535 gnutls_certificate_free_credentials(*credentials);
536 free(credentials);
537 free(conn);
538
539# elif defined(HAVE_CDSASSL)
89d46774 540 conn = (http_tls_t *)(con->http.tls);
541
542 while (SSLClose(conn->session) == errSSLWouldBlock)
b423cd4c 543 usleep(1000);
544
89d46774 545 SSLDisposeContext(conn->session);
546
547 if (conn->certsArray)
548 CFRelease(conn->certsArray);
549
550 free(conn);
ef416fc2 551# endif /* HAVE_LIBSSL */
552
553 con->http.tls = NULL;
554 }
555#endif /* HAVE_SSL */
556
557 if (con->pipe_pid != 0)
558 {
559 /*
560 * Stop any CGI process...
561 */
562
563 cupsdLogMessage(CUPSD_LOG_DEBUG2,
564 "cupsdCloseClient: %d Killing process ID %d...",
565 con->http.fd, con->pipe_pid);
566 cupsdEndProcess(con->pipe_pid, 1);
567 con->pipe_pid = 0;
568 }
569
570 if (con->file >= 0)
571 {
572 if (FD_ISSET(con->file, InputSet))
573 {
574 cupsdLogMessage(CUPSD_LOG_DEBUG2,
575 "cupsdCloseClient: %d Removing fd %d from InputSet...",
576 con->http.fd, con->file);
577 FD_CLR(con->file, InputSet);
578 }
579
580 cupsdLogMessage(CUPSD_LOG_DEBUG2,
581 "cupsdCloseClient: %d Closing data file %d.",
582 con->http.fd, con->file);
583
584 close(con->file);
585 con->file = -1;
586 }
587
588 /*
589 * Close the socket and clear the file from the input set for select()...
590 */
591
592 if (con->http.fd > 0)
593 {
594 if (partial)
595 {
596 /*
597 * Only do a partial close so that the encrypted client gets everything.
598 */
599
600 cupsdLogMessage(CUPSD_LOG_DEBUG2,
601 "cupsdCloseClient: Removing fd %d from OutputSet...",
602 con->http.fd);
603 shutdown(con->http.fd, 0);
604 FD_CLR(con->http.fd, OutputSet);
605 }
606 else
607 {
608 /*
609 * Shut the socket down fully...
610 */
611
612 cupsdLogMessage(CUPSD_LOG_DEBUG2,
613 "cupsdCloseClient: Removing fd %d from InputSet and OutputSet...",
614 con->http.fd);
615 close(con->http.fd);
616 FD_CLR(con->http.fd, InputSet);
617 FD_CLR(con->http.fd, OutputSet);
618 con->http.fd = -1;
619 }
620 }
621
622 if (!partial)
623 {
624 /*
625 * Free memory...
626 */
627
628 if (con->http.input_set)
629 free(con->http.input_set);
630
631 httpClearCookie(HTTP(con));
632
633 cupsdClearString(&con->filename);
634 cupsdClearString(&con->command);
635 cupsdClearString(&con->options);
636
637 if (con->request)
638 {
639 ippDelete(con->request);
640 con->request = NULL;
641 }
642
643 if (con->response)
644 {
645 ippDelete(con->response);
646 con->response = NULL;
647 }
648
649 if (con->language)
650 {
651 cupsLangFree(con->language);
652 con->language = NULL;
653 }
654
655 /*
656 * Re-enable new client connections if we are going back under the
657 * limit...
658 */
659
bd7854cb 660 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 661 cupsdResumeListening();
662
663 /*
664 * Compact the list of clients as necessary...
665 */
666
bd7854cb 667 cupsArrayRemove(Clients, con);
ef416fc2 668
bd7854cb 669 free(con);
ef416fc2 670 }
671
672 return (partial);
673}
674
675
ef416fc2 676/*
677 * 'cupsdReadClient()' - Read data from a client.
678 */
679
680int /* O - 1 on success, 0 on error */
681cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
682{
683 char line[32768], /* Line from client... */
684 operation[64], /* Operation code from socket */
685 version[64], /* HTTP version number string */
686 locale[64], /* Locale */
687 *ptr; /* Pointer into strings */
688 int major, minor; /* HTTP version numbers */
689 http_status_t status; /* Transfer status */
690 ipp_state_t ipp_state; /* State of IPP transfer */
691 int bytes; /* Number of bytes to POST */
692 char *filename; /* Name of file for GET/HEAD */
693 char buf[1024]; /* Buffer for real filename */
694 struct stat filestats; /* File information */
695 mime_type_t *type; /* MIME type of file */
696 cupsd_printer_t *p; /* Printer */
697 static unsigned request_id = 0; /* Request ID for temp files */
698
699
700 status = HTTP_CONTINUE;
701
702 cupsdLogMessage(CUPSD_LOG_DEBUG2,
703 "cupsdReadClient: %d, used=%d, file=%d state=%d",
704 con->http.fd, con->http.used, con->file, con->http.state);
705
706 if (con->http.error)
707 {
708 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: http error seen...");
709 return (cupsdCloseClient(con));
710 }
711
712#ifdef HAVE_SSL
713 if (con->auto_ssl)
714 {
715 /*
716 * Automatically check for a SSL/TLS handshake...
717 */
718
719 con->auto_ssl = 0;
720
721 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
722 (!buf[0] || !strchr("DGHOPT", buf[0])))
723 {
724 /*
725 * Encrypt this connection...
726 */
727
728 cupsdLogMessage(CUPSD_LOG_DEBUG2,
729 "cupsdReadClient: Saw first byte %02X, auto-negotiating SSL/TLS session...",
730 buf[0] & 255);
731
e1d6a774 732 encrypt_client(con);
ef416fc2 733 return (1);
734 }
735 }
736#endif /* HAVE_SSL */
737
738 switch (con->http.state)
739 {
740 case HTTP_WAITING :
741 /*
742 * See if we've received a request line...
743 */
744
745 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
746 {
747 cupsdLogMessage(CUPSD_LOG_DEBUG2,
748 "cupsdReadClient: httpGets returned EOF...");
749 return (cupsdCloseClient(con));
750 }
751
752 /*
753 * Ignore blank request lines...
754 */
755
756 if (line[0] == '\0')
757 break;
758
759 /*
760 * Clear other state variables...
761 */
762
763 httpClearFields(HTTP(con));
764
765 con->http.activity = time(NULL);
766 con->http.version = HTTP_1_0;
767 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
768 con->http.data_encoding = HTTP_ENCODE_LENGTH;
769 con->http.data_remaining = 0;
770 con->http._data_remaining = 0;
771 con->operation = HTTP_WAITING;
772 con->bytes = 0;
773 con->file = -1;
774 con->file_ready = 0;
775 con->pipe_pid = 0;
776 con->username[0] = '\0';
777 con->password[0] = '\0';
778 con->uri[0] = '\0';
779
780 cupsdClearString(&con->command);
781 cupsdClearString(&con->options);
782
783 if (con->language != NULL)
784 {
785 cupsLangFree(con->language);
786 con->language = NULL;
787 }
788
789 /*
790 * Grab the request line...
791 */
792
793 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
794 {
795 case 1 :
796 cupsdLogMessage(CUPSD_LOG_ERROR,
797 "Bad request line \"%s\" from %s!", line,
798 con->http.hostname);
799 cupsdSendError(con, HTTP_BAD_REQUEST);
800 return (cupsdCloseClient(con));
801 case 2 :
802 con->http.version = HTTP_0_9;
803 break;
804 case 3 :
805 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
806 {
807 cupsdLogMessage(CUPSD_LOG_ERROR,
808 "Bad request line \"%s\" from %s!", line,
809 con->http.hostname);
810 cupsdSendError(con, HTTP_BAD_REQUEST);
811 return (cupsdCloseClient(con));
812 }
813
814 if (major < 2)
815 {
816 con->http.version = (http_version_t)(major * 100 + minor);
817 if (con->http.version == HTTP_1_1 && KeepAlive)
818 con->http.keep_alive = HTTP_KEEPALIVE_ON;
819 else
820 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
821 }
822 else
823 {
824 cupsdSendError(con, HTTP_NOT_SUPPORTED);
825 return (cupsdCloseClient(con));
826 }
827 break;
828 }
829
830 /*
831 * Handle full URLs in the request line...
832 */
833
834 if (strcmp(con->uri, "*"))
835 {
836 char method[HTTP_MAX_URI], /* Method/scheme */
837 userpass[HTTP_MAX_URI], /* Username:password */
838 hostname[HTTP_MAX_URI], /* Hostname */
839 resource[HTTP_MAX_URI]; /* Resource path */
840 int port; /* Port number */
841
842
843 /*
844 * Separate the URI into its components...
845 */
846
a4d04587 847 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
848 method, sizeof(method),
ef416fc2 849 userpass, sizeof(userpass),
850 hostname, sizeof(hostname), &port,
851 resource, sizeof(resource));
852
853 /*
854 * Only allow URIs with the servername, localhost, or an IP
855 * address...
856 */
857
858 if (strcmp(method, "file") &&
859 strcasecmp(hostname, ServerName) &&
860 strcasecmp(hostname, "localhost") &&
861 !isdigit(hostname[0]))
862 {
863 /*
864 * Nope, we don't do proxies...
865 */
866
867 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad URI \"%s\" in request!",
868 con->uri);
869 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED);
870 return (cupsdCloseClient(con));
871 }
872
873 /*
874 * Copy the resource portion back into the URI; both resource and
875 * con->uri are HTTP_MAX_URI bytes in size...
876 */
877
878 strcpy(con->uri, resource);
879 }
880
881 /*
882 * Process the request...
883 */
884
885 if (!strcmp(operation, "GET"))
886 con->http.state = HTTP_GET;
887 else if (!strcmp(operation, "PUT"))
888 con->http.state = HTTP_PUT;
889 else if (!strcmp(operation, "POST"))
890 con->http.state = HTTP_POST;
891 else if (!strcmp(operation, "DELETE"))
892 con->http.state = HTTP_DELETE;
893 else if (!strcmp(operation, "TRACE"))
894 con->http.state = HTTP_TRACE;
895 else if (!strcmp(operation, "OPTIONS"))
896 con->http.state = HTTP_OPTIONS;
897 else if (!strcmp(operation, "HEAD"))
898 con->http.state = HTTP_HEAD;
899 else
900 {
901 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad operation \"%s\"!", operation);
902 cupsdSendError(con, HTTP_BAD_REQUEST);
903 return (cupsdCloseClient(con));
904 }
905
906 con->start = time(NULL);
907 con->operation = con->http.state;
908
89d46774 909 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %s %s HTTP/%d.%d",
910 con->http.fd, operation, con->uri,
ef416fc2 911 con->http.version / 100, con->http.version % 100);
912
913 con->http.status = HTTP_OK;
914
915 case HTTP_OPTIONS :
916 case HTTP_DELETE :
917 case HTTP_GET :
918 case HTTP_HEAD :
919 case HTTP_POST :
920 case HTTP_PUT :
921 case HTTP_TRACE :
922 /*
923 * Parse incoming parameters until the status changes...
924 */
925
926 status = httpUpdate(HTTP(con));
927
928 if (status != HTTP_OK && status != HTTP_CONTINUE)
929 {
930 cupsdSendError(con, HTTP_BAD_REQUEST);
931 return (cupsdCloseClient(con));
932 }
933 break;
934
935 default :
936 break; /* Anti-compiler-warning-code */
937 }
938
939 /*
940 * Handle new transfers...
941 */
942
943 if (status == HTTP_OK)
944 {
945 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
946 {
947 /*
948 * Figure out the locale from the Accept-Language and Content-Type
949 * fields...
950 */
951
952 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ',')) != NULL)
953 *ptr = '\0';
954
955 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ';')) != NULL)
956 *ptr = '\0';
957
958 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE], "charset=")) != NULL)
959 {
960 /*
961 * Combine language and charset, and trim any extra params in the
962 * content-type.
963 */
964
965 snprintf(locale, sizeof(locale), "%s.%s",
966 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
967
968 if ((ptr = strchr(locale, ',')) != NULL)
969 *ptr = '\0';
970 }
971 else
972 snprintf(locale, sizeof(locale), "%s.%s",
973 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], DefaultCharset);
d6ae789d 974
89d46774 975 cupsdLogMessage(CUPSD_LOG_DEBUG,
976 "cupsdReadClient: %d Browser asked for language \"%s\"...",
977 con->http.fd, locale);
978
ef416fc2 979 con->language = cupsLangGet(locale);
980 }
981 else
982 con->language = cupsLangGet(DefaultLocale);
983
984 cupsdAuthorize(con);
985
986 if (!strncmp(con->http.fields[HTTP_FIELD_CONNECTION], "Keep-Alive", 10) &&
987 KeepAlive)
988 con->http.keep_alive = HTTP_KEEPALIVE_ON;
989
990 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
991 con->http.version >= HTTP_1_1)
992 {
993 /*
994 * HTTP/1.1 and higher require the "Host:" field...
995 */
996
997 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
998 return (cupsdCloseClient(con));
999 }
1000 else if (con->operation == HTTP_OPTIONS)
1001 {
1002 /*
1003 * Do OPTIONS command...
1004 */
1005
1006 if (con->best && con->best->type != AUTH_NONE)
1007 {
1008 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL))
1009 return (cupsdCloseClient(con));
1010 }
1011
1012 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1013 con->http.tls == NULL)
1014 {
1015#ifdef HAVE_SSL
1016 /*
1017 * Do encryption stuff...
1018 */
1019
1020 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1021 return (cupsdCloseClient(con));
1022
1023 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1024 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1025 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1026 httpPrintf(HTTP(con), "\r\n");
1027
e1d6a774 1028 encrypt_client(con);
ef416fc2 1029#else
1030 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1031 return (cupsdCloseClient(con));
1032#endif /* HAVE_SSL */
1033 }
1034
ef416fc2 1035 if (!cupsdSendHeader(con, HTTP_OK, NULL))
1036 return (cupsdCloseClient(con));
1037
1038 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1039 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1040 httpPrintf(HTTP(con), "\r\n");
1041 }
1042 else if (!is_path_absolute(con->uri))
1043 {
1044 /*
1045 * Protect against malicious users!
1046 */
1047
1048 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1049 return (cupsdCloseClient(con));
1050 }
1051 else
1052 {
1053 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1054 con->http.tls == NULL)
1055 {
1056#ifdef HAVE_SSL
1057 /*
1058 * Do encryption stuff...
1059 */
1060
1061 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1062 return (cupsdCloseClient(con));
1063
1064 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1065 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1066 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1067 httpPrintf(HTTP(con), "\r\n");
1068
e1d6a774 1069 encrypt_client(con);
ef416fc2 1070#else
1071 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1072 return (cupsdCloseClient(con));
1073#endif /* HAVE_SSL */
1074 }
1075
1076 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1077 {
1078 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1079 "cupsdReadClient: Unauthorized request for %s...\n",
1080 con->uri);
1081 cupsdSendError(con, status);
1082 return (cupsdCloseClient(con));
1083 }
1084
b423cd4c 1085 if (con->http.expect &&
1086 (con->operation == HTTP_POST || con->operation == HTTP_PUT))
ef416fc2 1087 {
b423cd4c 1088 if (con->http.expect == HTTP_CONTINUE)
1089 {
1090 /*
1091 * Send 100-continue header...
1092 */
1093
1094 if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL))
1095 return (cupsdCloseClient(con));
1096 }
1097 else
1098 {
1099 /*
1100 * Send 417-expectation-failed header...
1101 */
1102
1103 if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL))
1104 return (cupsdCloseClient(con));
1105
1106 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1107 httpPrintf(HTTP(con), "\r\n");
1108 }
ef416fc2 1109 }
1110
1111 switch (con->http.state)
1112 {
1113 case HTTP_GET_SEND :
1114 if (!strncmp(con->uri, "/printers/", 10) &&
1115 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1116 {
1117 /*
1118 * Send PPD file - get the real printer name since printer
1119 * names are not case sensitive but filenames can be...
1120 */
1121
1122 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1123
1124 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1125 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1126 else
1127 {
1128 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1129 return (cupsdCloseClient(con));
1130
1131 break;
1132 }
1133 }
1134
1135 if ((!strncmp(con->uri, "/admin", 6) &&
1136 strncmp(con->uri, "/admin/conf/", 12) &&
1137 strncmp(con->uri, "/admin/log/", 11)) ||
1138 !strncmp(con->uri, "/printers", 9) ||
1139 !strncmp(con->uri, "/classes", 8) ||
1140 !strncmp(con->uri, "/help", 5) ||
1141 !strncmp(con->uri, "/jobs", 5))
1142 {
1143 /*
1144 * Send CGI output...
1145 */
1146
1147 if (!strncmp(con->uri, "/admin", 6))
1148 {
1149 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1150 ServerBin);
1151
b423cd4c 1152 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1153 }
1154 else if (!strncmp(con->uri, "/printers", 9))
1155 {
1156 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1157 ServerBin);
b423cd4c 1158
1159 if (con->uri[9] && con->uri[10])
1160 cupsdSetString(&con->options, con->uri + 9);
1161 else
1162 cupsdSetString(&con->options, NULL);
ef416fc2 1163 }
1164 else if (!strncmp(con->uri, "/classes", 8))
1165 {
1166 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1167 ServerBin);
b423cd4c 1168
1169 if (con->uri[8] && con->uri[9])
1170 cupsdSetString(&con->options, con->uri + 8);
1171 else
1172 cupsdSetString(&con->options, NULL);
ef416fc2 1173 }
1174 else if (!strncmp(con->uri, "/jobs", 5))
1175 {
1176 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1177 ServerBin);
b423cd4c 1178
1179 if (con->uri[5] && con->uri[6])
1180 cupsdSetString(&con->options, con->uri + 5);
1181 else
1182 cupsdSetString(&con->options, NULL);
ef416fc2 1183 }
1184 else
1185 {
1186 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1187 ServerBin);
ef416fc2 1188
b423cd4c 1189 if (con->uri[5] && con->uri[6])
1190 cupsdSetString(&con->options, con->uri + 5);
1191 else
1192 cupsdSetString(&con->options, NULL);
1193 }
ef416fc2 1194
1195 if (!cupsdSendCommand(con, con->command, con->options, 0))
1196 {
1197 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1198 return (cupsdCloseClient(con));
1199 }
1200 else
1201 cupsdLogRequest(con, HTTP_OK);
1202
1203 if (con->http.version <= HTTP_1_0)
1204 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1205 }
1206 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1207 (strchr(con->uri + 12, '/') ||
1208 strlen(con->uri) == 12)) ||
1209 (!strncmp(con->uri, "/admin/log/", 11) &&
1210 (strchr(con->uri + 11, '/') ||
1211 strlen(con->uri) == 11)))
1212 {
1213 /*
1214 * GET can only be done to configuration files under
1215 * /admin/conf...
1216 */
1217
1218 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1219 return (cupsdCloseClient(con));
1220
1221 break;
1222 }
1223 else
1224 {
1225 /*
1226 * Serve a file...
1227 */
1228
1229 if ((filename = get_file(con, &filestats, buf,
1230 sizeof(buf))) == NULL)
1231 {
1232 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1233 return (cupsdCloseClient(con));
1234
1235 break;
1236 }
1237
4400e98d 1238 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1239
e1d6a774 1240 if (is_cgi(con, filename, &filestats, type))
ef416fc2 1241 {
1242 /*
1243 * Note: con->command and con->options were set by
e1d6a774 1244 * is_cgi()...
ef416fc2 1245 */
1246
1247 if (!cupsdSendCommand(con, con->command, con->options, 0))
1248 {
1249 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1250 return (cupsdCloseClient(con));
1251 }
1252 else
1253 cupsdLogRequest(con, HTTP_OK);
1254
1255 if (con->http.version <= HTTP_1_0)
1256 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1257 break;
1258 }
1259
1260 if (!check_if_modified(con, &filestats))
1261 {
1262 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1263 return (cupsdCloseClient(con));
1264 }
1265 else
1266 {
1267 if (type == NULL)
1268 strcpy(line, "text/plain");
1269 else
1270 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1271
a74454a7 1272 if (!write_file(con, HTTP_OK, filename, line, &filestats))
ef416fc2 1273 return (cupsdCloseClient(con));
1274 }
1275 }
1276 break;
1277
1278 case HTTP_POST_RECV :
1279 /*
1280 * See if the POST request includes a Content-Length field, and if
1281 * so check the length against any limits that are set...
1282 */
1283
1284 cupsdLogMessage(CUPSD_LOG_DEBUG2, "POST %s", con->uri);
1285 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1286 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1287
1288 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1289 MaxRequestSize > 0 &&
1290 con->http.data_remaining > MaxRequestSize)
1291 {
1292 /*
1293 * Request too large...
1294 */
1295
1296 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1297 return (cupsdCloseClient(con));
1298
1299 break;
1300 }
1301 else if (con->http.data_remaining < 0)
1302 {
1303 /*
1304 * Negative content lengths are invalid!
1305 */
1306
1307 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1308 return (cupsdCloseClient(con));
1309
1310 break;
1311 }
1312
1313 /*
1314 * See what kind of POST request this is; for IPP requests the
1315 * content-type field will be "application/ipp"...
1316 */
1317
1318 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1319 "application/ipp"))
1320 con->request = ippNew();
1321 else if ((!strncmp(con->uri, "/admin", 6) &&
1322 strncmp(con->uri, "/admin/conf/", 12) &&
1323 strncmp(con->uri, "/admin/log/", 11)) ||
1324 !strncmp(con->uri, "/printers", 9) ||
1325 !strncmp(con->uri, "/classes", 8) ||
1326 !strncmp(con->uri, "/help", 5) ||
1327 !strncmp(con->uri, "/jobs", 5))
1328 {
1329 /*
1330 * CGI request...
1331 */
1332
1333 if (!strncmp(con->uri, "/admin", 6))
1334 {
1335 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1336 ServerBin);
1337
b423cd4c 1338 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1339 }
1340 else if (!strncmp(con->uri, "/printers", 9))
1341 {
1342 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1343 ServerBin);
b423cd4c 1344
1345 if (con->uri[9] && con->uri[10])
1346 cupsdSetString(&con->options, con->uri + 9);
1347 else
1348 cupsdSetString(&con->options, NULL);
ef416fc2 1349 }
1350 else if (!strncmp(con->uri, "/classes", 8))
1351 {
1352 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1353 ServerBin);
b423cd4c 1354
1355 if (con->uri[8] && con->uri[9])
1356 cupsdSetString(&con->options, con->uri + 8);
1357 else
1358 cupsdSetString(&con->options, NULL);
ef416fc2 1359 }
1360 else if (!strncmp(con->uri, "/jobs", 5))
1361 {
1362 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1363 ServerBin);
b423cd4c 1364
1365 if (con->uri[5] && con->uri[6])
1366 cupsdSetString(&con->options, con->uri + 5);
1367 else
1368 cupsdSetString(&con->options, NULL);
ef416fc2 1369 }
1370 else
1371 {
1372 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1373 ServerBin);
ef416fc2 1374
b423cd4c 1375 if (con->uri[5] && con->uri[6])
1376 cupsdSetString(&con->options, con->uri + 5);
1377 else
1378 cupsdSetString(&con->options, NULL);
1379 }
ef416fc2 1380
1381 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b423cd4c 1382 "cupsdReadClient: %d command=\"%s\", "
1383 "options = \"%s\"",
f301802f 1384 con->http.fd, con->command,
1385 con->options ? con->options : "(null)");
ef416fc2 1386
1387 if (con->http.version <= HTTP_1_0)
1388 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1389 }
1390 else
1391 {
1392 /*
1393 * POST to a file...
1394 */
1395
1396 if ((filename = get_file(con, &filestats, buf,
1397 sizeof(buf))) == NULL)
1398 {
1399 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1400 return (cupsdCloseClient(con));
1401
1402 break;
1403 }
1404
4400e98d 1405 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1406
e1d6a774 1407 if (!is_cgi(con, filename, &filestats, type))
ef416fc2 1408 {
1409 /*
1410 * Only POST to CGI's...
1411 */
1412
1413 if (!cupsdSendError(con, HTTP_UNAUTHORIZED))
1414 return (cupsdCloseClient(con));
1415 }
1416 }
1417 break;
1418
1419 case HTTP_PUT_RECV :
1420 /*
1421 * Validate the resource name...
1422 */
1423
1424 if (strncmp(con->uri, "/admin/conf/", 12) ||
1425 strchr(con->uri + 12, '/') ||
1426 strlen(con->uri) == 12)
1427 {
1428 /*
1429 * PUT can only be done to configuration files under
1430 * /admin/conf...
1431 */
1432
1433 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1434 return (cupsdCloseClient(con));
1435
1436 break;
1437 }
1438
1439 /*
1440 * See if the PUT request includes a Content-Length field, and if
1441 * so check the length against any limits that are set...
1442 */
1443
1444 cupsdLogMessage(CUPSD_LOG_DEBUG2, "PUT %s", con->uri);
1445 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1446 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1447
1448 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1449 MaxRequestSize > 0 &&
1450 con->http.data_remaining > MaxRequestSize)
1451 {
1452 /*
1453 * Request too large...
1454 */
1455
1456 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1457 return (cupsdCloseClient(con));
1458
1459 break;
1460 }
1461 else if (con->http.data_remaining < 0)
1462 {
1463 /*
1464 * Negative content lengths are invalid!
1465 */
1466
1467 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1468 return (cupsdCloseClient(con));
1469
1470 break;
1471 }
1472
1473 /*
1474 * Open a temporary file to hold the request...
1475 */
1476
1477 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1478 request_id ++);
1479 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1480
1481 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1482 "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1483 con->filename, con->file);
1484
1485 if (con->file < 0)
1486 {
1487 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1488 return (cupsdCloseClient(con));
1489 }
1490
1491 fchmod(con->file, 0640);
1492 fchown(con->file, RunUser, Group);
1493 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1494 break;
1495
1496 case HTTP_DELETE :
1497 case HTTP_TRACE :
1498 cupsdSendError(con, HTTP_NOT_IMPLEMENTED);
1499 return (cupsdCloseClient(con));
1500
1501 case HTTP_HEAD :
1502 if (!strncmp(con->uri, "/printers/", 10) &&
1503 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1504 {
1505 /*
1506 * Send PPD file - get the real printer name since printer
1507 * names are not case sensitive but filenames can be...
1508 */
1509
1510 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1511
1512 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1513 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1514 else
1515 {
1516 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1517 return (cupsdCloseClient(con));
1518
1519 break;
1520 }
1521 }
1522
1523 if ((!strncmp(con->uri, "/admin", 6) &&
1524 strncmp(con->uri, "/admin/conf/", 12) &&
1525 strncmp(con->uri, "/admin/log/", 11)) ||
1526 !strncmp(con->uri, "/printers", 9) ||
1527 !strncmp(con->uri, "/classes", 8) ||
1528 !strncmp(con->uri, "/help", 5) ||
1529 !strncmp(con->uri, "/jobs", 5))
1530 {
1531 /*
1532 * CGI output...
1533 */
1534
1535 if (!cupsdSendHeader(con, HTTP_OK, "text/html"))
1536 return (cupsdCloseClient(con));
1537
1538 if (httpPrintf(HTTP(con), "\r\n") < 0)
1539 return (cupsdCloseClient(con));
1540
1541 cupsdLogRequest(con, HTTP_OK);
1542 }
1543 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1544 (strchr(con->uri + 12, '/') ||
1545 strlen(con->uri) == 12)) ||
1546 (!strncmp(con->uri, "/admin/log/", 11) &&
1547 (strchr(con->uri + 11, '/') ||
1548 strlen(con->uri) == 11)))
1549 {
1550 /*
1551 * HEAD can only be done to configuration files under
1552 * /admin/conf...
1553 */
1554
1555 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1556 return (cupsdCloseClient(con));
1557
1558 break;
1559 }
1560 else if ((filename = get_file(con, &filestats, buf,
1561 sizeof(buf))) == NULL)
1562 {
1563 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html"))
1564 return (cupsdCloseClient(con));
1565
1566 cupsdLogRequest(con, HTTP_NOT_FOUND);
1567 }
1568 else if (!check_if_modified(con, &filestats))
1569 {
1570 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1571 return (cupsdCloseClient(con));
1572
1573 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
1574 }
1575 else
1576 {
1577 /*
1578 * Serve a file...
1579 */
1580
4400e98d 1581 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1582 if (type == NULL)
1583 strcpy(line, "text/plain");
1584 else
1585 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1586
1587 if (!cupsdSendHeader(con, HTTP_OK, line))
1588 return (cupsdCloseClient(con));
1589
1590 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
1591 httpGetDateString(filestats.st_mtime)) < 0)
1592 return (cupsdCloseClient(con));
1593
1594 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
1595 (unsigned long)filestats.st_size) < 0)
1596 return (cupsdCloseClient(con));
1597
1598 cupsdLogRequest(con, HTTP_OK);
1599 }
1600
1601 if (httpPrintf(HTTP(con), "\r\n") < 0)
1602 return (cupsdCloseClient(con));
1603
1604 con->http.state = HTTP_WAITING;
1605 break;
1606
1607 default :
1608 break; /* Anti-compiler-warning-code */
1609 }
1610 }
1611 }
1612
1613 /*
1614 * Handle any incoming data...
1615 */
1616
1617 switch (con->http.state)
1618 {
1619 case HTTP_PUT_RECV :
1620 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1621 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_%s, "
1622 "con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1623 con->http.fd,
1624 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1625 "CHUNKED" : "LENGTH",
1626 CUPS_LLCAST con->http.data_remaining, con->file);
1627
a4d04587 1628 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
ef416fc2 1629 return (cupsdCloseClient(con));
1630 else if (bytes > 0)
1631 {
1632 con->bytes += bytes;
1633
1634 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1635 "cupsdReadClient: %d writing %d bytes to %d",
1636 con->http.fd, bytes, con->file);
1637
1638 if (write(con->file, line, bytes) < bytes)
1639 {
1640 cupsdLogMessage(CUPSD_LOG_ERROR,
1641 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1642 bytes, con->filename, strerror(errno));
1643
1644 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1645 "cupsdReadClient: Closing data file %d...",
1646 con->file);
1647
1648 close(con->file);
1649 con->file = -1;
1650 unlink(con->filename);
1651 cupsdClearString(&con->filename);
1652
1653 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1654 return (cupsdCloseClient(con));
1655 }
1656 }
1657
1658 if (con->http.state == HTTP_WAITING)
1659 {
1660 /*
1661 * End of file, see how big it is...
1662 */
1663
1664 fstat(con->file, &filestats);
1665
1666 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1667 "cupsdReadClient: %d Closing data file %d, size="
1668 CUPS_LLFMT ".",
1669 con->http.fd, con->file,
1670 CUPS_LLCAST filestats.st_size);
1671
1672 close(con->file);
1673 con->file = -1;
1674
1675 if (filestats.st_size > MaxRequestSize &&
1676 MaxRequestSize > 0)
1677 {
1678 /*
1679 * Request is too big; remove it and send an error...
1680 */
1681
1682 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1683 "cupsdReadClient: %d Removing temp file %s",
1684 con->http.fd, con->filename);
1685 unlink(con->filename);
1686 cupsdClearString(&con->filename);
1687
1688 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1689 return (cupsdCloseClient(con));
1690 }
1691
1692 /*
1693 * Install the configuration file...
1694 */
1695
1696 status = install_conf_file(con);
1697
1698 /*
1699 * Return the status to the client...
1700 */
1701
1702 if (!cupsdSendError(con, status))
1703 return (cupsdCloseClient(con));
1704 }
1705 break;
1706
1707 case HTTP_POST_RECV :
1708 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1709 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_"
1710 "%s, con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1711 con->http.fd,
1712 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1713 "CHUNKED" : "LENGTH",
1714 CUPS_LLCAST con->http.data_remaining, con->file);
1715
1716 if (con->request != NULL)
1717 {
1718 /*
1719 * Grab any request data from the connection...
1720 */
1721
1722 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
1723 {
1724 cupsdLogMessage(CUPSD_LOG_ERROR,
1725 "cupsdReadClient: %d IPP Read Error!",
1726 con->http.fd);
1727
1728 cupsdSendError(con, HTTP_BAD_REQUEST);
1729 return (cupsdCloseClient(con));
1730 }
1731 else if (ipp_state != IPP_DATA)
1732 {
1733 if (con->http.state == HTTP_POST_SEND)
1734 {
1735 cupsdSendError(con, HTTP_BAD_REQUEST);
1736 return (cupsdCloseClient(con));
1737 }
1738
1739 break;
1740 }
1741 else
1742 con->bytes += ippLength(con->request);
1743 }
1744
1745 if (con->file < 0 && con->http.state != HTTP_POST_SEND)
1746 {
1747 /*
1748 * Create a file as needed for the request data...
1749 */
1750
1751 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
1752 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1753
1754 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1755 con->filename, con->file);
1756
1757 if (con->file < 0)
1758 {
1759 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1760 return (cupsdCloseClient(con));
1761 }
1762
1763 fchmod(con->file, 0640);
1764 fchown(con->file, RunUser, Group);
1765 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1766 }
1767
1768 if (con->http.state != HTTP_POST_SEND)
1769 {
a4d04587 1770 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
ef416fc2 1771 return (cupsdCloseClient(con));
1772 else if (bytes > 0)
1773 {
1774 con->bytes += bytes;
1775
1776 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1777 "cupsdReadClient: %d writing %d bytes to %d",
1778 con->http.fd, bytes, con->file);
1779
1780 if (write(con->file, line, bytes) < bytes)
1781 {
1782 cupsdLogMessage(CUPSD_LOG_ERROR,
1783 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1784 bytes, con->filename, strerror(errno));
1785
1786 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1787 "cupsdReadClient: Closing file %d...",
1788 con->file);
1789
1790 close(con->file);
1791 con->file = -1;
1792 unlink(con->filename);
1793 cupsdClearString(&con->filename);
1794
1795 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1796 return (cupsdCloseClient(con));
1797 }
1798 }
1799 else if (con->http.state == HTTP_POST_RECV)
1800 return (1); /* ??? */
1801 else if (con->http.state != HTTP_POST_SEND)
1802 return (cupsdCloseClient(con));
1803 }
1804
1805 if (con->http.state == HTTP_POST_SEND)
1806 {
1807 if (con->file >= 0)
1808 {
1809 fstat(con->file, &filestats);
1810
1811 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1812 "cupsdReadClient: %d Closing data file %d, "
1813 "size=" CUPS_LLFMT ".",
1814 con->http.fd, con->file,
1815 CUPS_LLCAST filestats.st_size);
1816
1817 close(con->file);
1818 con->file = -1;
1819
1820 if (filestats.st_size > MaxRequestSize &&
1821 MaxRequestSize > 0)
1822 {
1823 /*
1824 * Request is too big; remove it and send an error...
1825 */
1826
1827 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1828 "cupsdReadClient: %d Removing temp file %s",
1829 con->http.fd, con->filename);
1830 unlink(con->filename);
1831 cupsdClearString(&con->filename);
1832
1833 if (con->request)
1834 {
1835 /*
1836 * Delete any IPP request data...
1837 */
1838
1839 ippDelete(con->request);
1840 con->request = NULL;
1841 }
1842
1843 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1844 return (cupsdCloseClient(con));
1845 }
1846
1847 if (con->command)
1848 {
1849 if (!cupsdSendCommand(con, con->command, con->options, 0))
1850 {
1851 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1852 return (cupsdCloseClient(con));
1853 }
1854 else
1855 cupsdLogRequest(con, HTTP_OK);
1856 }
1857 }
1858
1859 if (con->request)
1860 return (cupsdProcessIPPRequest(con));
1861 }
1862 break;
1863
1864 default :
1865 break; /* Anti-compiler-warning-code */
1866 }
1867
1868 if (!con->http.keep_alive && con->http.state == HTTP_WAITING)
1869 return (cupsdCloseClient(con));
1870 else
1871 return (1);
1872}
1873
1874
1875/*
1876 * 'cupsdSendCommand()' - Send output from a command via HTTP.
1877 */
1878
1879int /* O - 1 on success, 0 on failure */
1880cupsdSendCommand(
1881 cupsd_client_t *con, /* I - Client connection */
1882 char *command, /* I - Command to run */
1883 char *options, /* I - Command-line options */
1884 int root) /* I - Run as root? */
1885{
1886 int fd; /* Standard input file descriptor */
1887
1888
1889 if (con->filename)
ed486911 1890 {
ef416fc2 1891 fd = open(con->filename, O_RDONLY);
ef416fc2 1892
ed486911 1893 if (fd < 0)
1894 {
1895 cupsdLogMessage(CUPSD_LOG_ERROR,
1896 "cupsdSendCommand: %d Unable to open \"%s\" for reading: %s",
1897 con->http.fd, con->filename ? con->filename : "/dev/null",
1898 strerror(errno));
1899 return (0);
1900 }
ef416fc2 1901
ed486911 1902 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
1903 }
1904 else
1905 fd = -1;
ef416fc2 1906
1907 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
1908
ed486911 1909 if (fd >= 0)
1910 close(fd);
ef416fc2 1911
1912 cupsdLogMessage(CUPSD_LOG_INFO, "Started \"%s\" (pid=%d)", command,
1913 con->pipe_pid);
1914
1915 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendCommand: %d file=%d",
1916 con->http.fd, con->file);
1917
1918 if (con->pipe_pid == 0)
1919 return (0);
1920
1921 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1922
1923 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1924 "cupsdSendCommand: Adding fd %d to InputSet...", con->file);
1925 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1926 "cupsdSendCommand: Adding fd %d to OutputSet...",
1927 con->http.fd);
1928
1929 FD_SET(con->file, InputSet);
1930 FD_SET(con->http.fd, OutputSet);
1931
1932 con->sent_header = 0;
1933 con->file_ready = 0;
1934 con->got_fields = 0;
1935 con->field_col = 0;
1936
1937 return (1);
1938}
1939
1940
1941/*
1942 * 'cupsdSendError()' - Send an error message via HTTP.
1943 */
1944
1945int /* O - 1 if successful, 0 otherwise */
1946cupsdSendError(cupsd_client_t *con, /* I - Connection */
1947 http_status_t code) /* I - Error code */
1948{
4744bd90 1949#ifdef HAVE_SSL
1950 /*
1951 * Force client to upgrade for authentication if that is how the
1952 * server is configured...
1953 */
1954
1955 if (code == HTTP_UNAUTHORIZED &&
1956 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
1957 strcasecmp(con->http.hostname, "localhost") &&
1958 !con->http.tls)
1959 {
1960 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1961 "cupsdSendError: Encryption before authentication!");
1962 code = HTTP_UPGRADE_REQUIRED;
1963 }
1964#endif /* HAVE_SSL */
1965
ef416fc2 1966 /*
1967 * Put the request in the access_log file...
1968 */
1969
1970 cupsdLogRequest(con, code);
1971
1972 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendError: %d code=%d (%s)",
1973 con->http.fd, code, httpStatus(code));
1974
1975 /*
1976 * To work around bugs in some proxies, don't use Keep-Alive for some
1977 * error messages...
1978 */
1979
1980 if (code >= HTTP_BAD_REQUEST)
1981 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1982
1983 /*
1984 * Send an error message back to the client. If the error code is a
1985 * 400 or 500 series, make sure the message contains some text, too!
1986 */
1987
1988 if (!cupsdSendHeader(con, code, NULL))
1989 return (0);
1990
1991#ifdef HAVE_SSL
1992 if (code == HTTP_UPGRADE_REQUIRED)
1993 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
1994 return (0);
1995
1996 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n") < 0)
1997 return (0);
1998#endif /* HAVE_SSL */
1999
2000 if ((con->http.version >= HTTP_1_1 && !con->http.keep_alive) ||
2001 (code >= HTTP_BAD_REQUEST && code != HTTP_UPGRADE_REQUIRED))
2002 {
2003 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
2004 return (0);
2005 }
2006
2007 if (code >= HTTP_BAD_REQUEST)
2008 {
2009 /*
2010 * Send a human-readable error message.
2011 */
2012
80ca4592 2013 char message[4096], /* Message for user */
2014 urltext[1024], /* URL redirection text */
2015 redirect[1024]; /* Redirection link */
ef416fc2 2016 const char *text; /* Status-specific text */
2017
80ca4592 2018
2019 redirect[0] = '\0';
2020
ef416fc2 2021 if (code == HTTP_UNAUTHORIZED)
2022 text = _cupsLangString(con->language,
2023 _("Enter your username and password or the "
2024 "root username and password to access this "
2025 "page."));
2026 else if (code == HTTP_UPGRADE_REQUIRED)
80ca4592 2027 {
2028 text = urltext;
2029
2030 snprintf(urltext, sizeof(urltext),
2031 _cupsLangString(con->language,
2032 _("You must access this page using the URL "
2033 "<A HREF=\"https://%s:%d%s\">"
2034 "https://%s:%d%s</A>.")),
2035 con->servername, con->serverport, con->uri,
2036 con->servername, con->serverport, con->uri);
2037
2038 snprintf(redirect, sizeof(redirect),
2039 "<META HTTP-EQUIV=\"Refresh\" CONTENT=\"3;https://%s:%d%s\">\n",
2040 con->servername, con->serverport, con->uri);
2041 }
ef416fc2 2042 else
2043 text = "";
2044
2045 snprintf(message, sizeof(message),
2046 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" "
2047 "\"http://www.w3.org/TR/REC-html40/loose.dtd\">\n"
2048 "<HTML>\n"
2049 "<HEAD>\n"
2050 "\t<META HTTP-EQUIV=\"Content-Type\" "
2051 "CONTENT=\"text/html; charset=utf-8\">\n"
2052 "\t<TITLE>%d %s</TITLE>\n"
2053 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2054 "HREF=\"/cups.css\">\n"
80ca4592 2055 "%s"
ef416fc2 2056 "</HEAD>\n"
2057 "<BODY>\n"
2058 "<H1>%d %s</H1>\n"
2059 "<P>%s</P>\n"
2060 "</BODY>\n"
2061 "</HTML>\n",
80ca4592 2062 code, httpStatus(code), redirect, code, httpStatus(code), text);
ef416fc2 2063
2064 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2065 return (0);
2066 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2067 (int)strlen(message)) < 0)
2068 return (0);
2069 if (httpPrintf(HTTP(con), "\r\n") < 0)
2070 return (0);
2071 if (httpPrintf(HTTP(con), "%s", message) < 0)
2072 return (0);
2073 }
2074 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2075 return (0);
2076
2077 con->http.state = HTTP_WAITING;
2078
2079 return (1);
2080}
2081
2082
ef416fc2 2083/*
2084 * 'cupsdSendHeader()' - Send an HTTP request.
2085 */
2086
2087int /* O - 1 on success, 0 on failure */
2088cupsdSendHeader(cupsd_client_t *con, /* I - Client to send to */
2089 http_status_t code, /* I - HTTP status code */
2090 char *type) /* I - MIME type of document */
2091{
4744bd90 2092 /*
2093 * Send the HTTP status header...
2094 */
2095
ef416fc2 2096 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2097 con->http.version % 100, code, httpStatus(code)) < 0)
2098 return (0);
b423cd4c 2099
2100 if (code == HTTP_CONTINUE)
2101 {
4744bd90 2102 /*
2103 * 100-continue doesn't send any headers...
2104 */
2105
b423cd4c 2106 if (httpPrintf(HTTP(con), "\r\n") < 0)
2107 return (0);
2108 else
2109 return (1);
2110 }
2111
ef416fc2 2112 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2113 return (0);
2114 if (ServerHeader)
2115 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2116 return (0);
2117 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2118 {
2119 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2120 return (0);
2121 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2122 KeepAliveTimeout) < 0)
2123 return (0);
2124 }
2125 if (code == HTTP_METHOD_NOT_ALLOWED)
2126 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST\r\n") < 0)
2127 return (0);
2128
2129 if (code == HTTP_UNAUTHORIZED)
2130 {
2131 int auth_type; /* Authentication type */
2132
2133
2134 if (!con->best || con->best->type == AUTH_NONE)
2135 auth_type = DefaultAuthType;
2136 else
2137 auth_type = con->best->type;
2138
2139 if (auth_type != AUTH_DIGEST)
2140 {
2141 if (httpPrintf(HTTP(con),
2142 "WWW-Authenticate: Basic realm=\"CUPS\"\r\n") < 0)
2143 return (0);
2144 }
2145 else
2146 {
2147 if (httpPrintf(HTTP(con),
2148 "WWW-Authenticate: Digest realm=\"CUPS\", nonce=\"%s\"\r\n",
2149 con->http.hostname) < 0)
2150 return (0);
2151 }
2152 }
2153
e1d6a774 2154 if (con->language && strcmp(con->language->language, "C"))
ef416fc2 2155 {
2156 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2157 con->language->language) < 0)
2158 return (0);
2159 }
2160
e1d6a774 2161 if (type)
ef416fc2 2162 {
2163 if (!strcmp(type, "text/html"))
2164 {
2165 if (httpPrintf(HTTP(con),
2166 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2167 return (0);
2168 }
2169 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2170 return (0);
2171 }
2172
2173 return (1);
2174}
2175
2176
2177/*
2178 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2179 */
2180
2181void
2182cupsdUpdateCGI(void)
2183{
2184 char *ptr, /* Pointer to end of line in buffer */
2185 message[1024]; /* Pointer to message text */
2186 int loglevel; /* Log level for message */
2187
2188
2189 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2190 message, sizeof(message))) != NULL)
2191 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2192 break;
2193
2194 if (ptr == NULL && errno)
2195 {
2196 /*
2197 * Fatal error on pipe - should never happen!
2198 */
2199
2200 cupsdLogMessage(CUPSD_LOG_CRIT,
2201 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2202 strerror(errno));
2203 }
2204}
2205
2206
2207/*
2208 * 'cupsdWriteClient()' - Write data to a client as needed.
2209 */
2210
2211int /* O - 1 if success, 0 if fail */
2212cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2213{
2214 int bytes; /* Number of bytes written */
2215 char buf[16385]; /* Data buffer */
2216 char *bufptr; /* Pointer into buffer */
2217 ipp_state_t ipp_state; /* IPP state value */
2218
2219
2220#ifdef DEBUG
2221 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2222 "cupsdWriteClient(con=%p) %d response=%p, file=%d "
2223 "pipe_pid=%d state=%d",
2224 con, con->http.fd, con->response, con->file, con->pipe_pid,
2225 con->http.state);
2226#endif /* DEBUG */
2227
2228 if (con->http.state != HTTP_GET_SEND &&
2229 con->http.state != HTTP_POST_SEND)
2230 return (1);
2231
2232 if (con->response != NULL)
2233 {
2234 ipp_state = ippWrite(&(con->http), con->response);
2235 bytes = ipp_state != IPP_ERROR && ipp_state != IPP_DATA;
2236 }
2237 else if ((bytes = read(con->file, buf, sizeof(buf) - 1)) > 0)
2238 {
2239 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2240 "cupsdWriteClient: Read %d bytes from file %d...",
2241 bytes, con->file);
2242
2243 if (con->pipe_pid && !con->got_fields)
2244 {
2245 /*
2246 * Inspect the data for Content-Type and other fields.
2247 */
2248
2249 buf[bytes] = '\0';
2250
2251 for (bufptr = buf; !con->got_fields && *bufptr; bufptr ++)
2252 if (*bufptr == '\n')
2253 {
2254 /*
2255 * Send line to client...
2256 */
2257
2258 if (bufptr > buf && bufptr[-1] == '\r')
2259 bufptr[-1] = '\0';
2260 *bufptr++ = '\0';
2261
2262 cupsdLogMessage(CUPSD_LOG_DEBUG2, "Script header: %s", buf);
2263
2264 if (!con->sent_header)
2265 {
2266 /*
2267 * Handle redirection and CGI status codes...
2268 */
2269
2270 if (!strncasecmp(buf, "Location:", 9))
d6ae789d 2271 {
ef416fc2 2272 cupsdSendHeader(con, HTTP_SEE_OTHER, NULL);
d6ae789d 2273 if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
2274 return (0);
2275 }
ef416fc2 2276 else if (!strncasecmp(buf, "Status:", 7))
4744bd90 2277 cupsdSendError(con, atoi(buf + 7));
ef416fc2 2278 else
4744bd90 2279 {
ef416fc2 2280 cupsdSendHeader(con, HTTP_OK, NULL);
2281
4744bd90 2282 if (con->http.version == HTTP_1_1)
2283 {
2284 con->http.data_encoding = HTTP_ENCODE_CHUNKED;
ef416fc2 2285
4744bd90 2286 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
2287 return (0);
2288 }
2289 }
ef416fc2 2290
2291 con->sent_header = 1;
2292 }
2293
2294 if (strncasecmp(buf, "Status:", 7))
2295 httpPrintf(HTTP(con), "%s\r\n", buf);
2296
2297 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d %s",
2298 con->http.fd, buf);
2299
2300 /*
2301 * Update buffer...
2302 */
2303
2304 bytes -= (bufptr - buf);
2305 memmove(buf, bufptr, bytes + 1);
2306 bufptr = buf - 1;
2307
2308 /*
2309 * See if the line was empty...
2310 */
2311
2312 if (con->field_col == 0)
2313 con->got_fields = 1;
2314 else
2315 con->field_col = 0;
2316 }
2317 else if (*bufptr != '\r')
2318 con->field_col ++;
2319
2320 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2321 "cupsdWriteClient: %d bytes=%d, got_fields=%d",
2322 con->http.fd, bytes, con->got_fields);
2323
2324 if (bytes > 0 && !con->got_fields)
2325 {
2326 /*
2327 * Remaining text needs to go out...
2328 */
2329
2330 httpPrintf(HTTP(con), "%s", buf);
2331
2332 con->http.activity = time(NULL);
2333 return (1);
2334 }
2335 else if (bytes == 0)
ef416fc2 2336 con->http.activity = time(NULL);
ef416fc2 2337 }
2338
4744bd90 2339 if (bytes > 0)
ef416fc2 2340 {
4744bd90 2341 if (httpWrite2(HTTP(con), buf, bytes) < 0)
2342 {
2343 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2344 "cupsdWriteClient: %d Write of %d bytes failed!",
2345 con->http.fd, bytes);
ef416fc2 2346
4744bd90 2347 cupsdCloseClient(con);
2348 return (0);
2349 }
ef416fc2 2350
4744bd90 2351 con->bytes += bytes;
ef416fc2 2352
4744bd90 2353 if (con->http.state == HTTP_WAITING)
2354 bytes = 0;
2355 }
ef416fc2 2356 }
2357
2358 if (bytes <= 0)
2359 {
2360 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d bytes < 0",
2361 con->http.fd);
2362
2363 cupsdLogRequest(con, HTTP_OK);
2364
2365 httpFlushWrite(HTTP(con));
2366
2367 if (con->http.data_encoding == HTTP_ENCODE_CHUNKED)
2368 {
2369 if (httpPrintf(HTTP(con), "0\r\n\r\n") < 0)
2370 {
2371 cupsdCloseClient(con);
2372 return (0);
2373 }
2374 }
2375
2376 con->http.state = HTTP_WAITING;
2377
2378 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2379 "cupsdWriteClient: Removing fd %d from OutputSet...",
2380 con->http.fd);
2381
2382 FD_CLR(con->http.fd, OutputSet);
2383
2384 if (con->file >= 0)
2385 {
2386 if (FD_ISSET(con->file, InputSet))
2387 {
2388 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2389 "cupsdWriteClient: Removing fd %d from InputSet...",
2390 con->file);
2391 FD_CLR(con->file, InputSet);
2392 }
2393
2394 if (con->pipe_pid)
2395 cupsdEndProcess(con->pipe_pid, 0);
2396
2397 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2398 "cupsdWriteClient: %d Closing data file %d.",
2399 con->http.fd, con->file);
2400
2401 close(con->file);
2402 con->file = -1;
2403 con->pipe_pid = 0;
2404 }
2405
2406 if (con->filename)
2407 {
2408 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2409 "cupsdWriteClient: %d Removing temp file %s",
2410 con->http.fd, con->filename);
2411 unlink(con->filename);
2412 cupsdClearString(&con->filename);
2413 }
2414
2415 if (con->request != NULL)
2416 {
2417 ippDelete(con->request);
2418 con->request = NULL;
2419 }
2420
2421 if (con->response != NULL)
2422 {
2423 ippDelete(con->response);
2424 con->response = NULL;
2425 }
2426
2427 cupsdClearString(&con->command);
2428 cupsdClearString(&con->options);
2429
2430 if (!con->http.keep_alive)
2431 {
2432 cupsdCloseClient(con);
2433 return (0);
2434 }
2435 }
2436 else
2437 {
2438 con->file_ready = 0;
2439
2440 if (con->pipe_pid && !FD_ISSET(con->file, InputSet))
2441 {
2442 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2443 "cupsdWriteClient: Adding fd %d to InputSet...",
2444 con->file);
2445 FD_SET(con->file, InputSet);
2446 }
2447 }
2448
2449 con->http.activity = time(NULL);
2450
2451 return (1);
2452}
2453
2454
e1d6a774 2455/*
2456 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2457 */
2458
2459static int /* O - 1 if modified since */
2460check_if_modified(
2461 cupsd_client_t *con, /* I - Client connection */
2462 struct stat *filestats) /* I - File information */
2463{
2464 char *ptr; /* Pointer into field */
2465 time_t date; /* Time/date value */
2466 off_t size; /* Size/length value */
2467
2468
2469 size = 0;
2470 date = 0;
2471 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
2472
2473 if (*ptr == '\0')
2474 return (1);
2475
2476 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2477 "check_if_modified: %d If-Modified-Since=\"%s\"",
2478 con->http.fd, ptr);
2479
2480 while (*ptr != '\0')
2481 {
2482 while (isspace(*ptr) || *ptr == ';')
2483 ptr ++;
2484
2485 if (strncasecmp(ptr, "length=", 7) == 0)
2486 {
2487 ptr += 7;
2488 size = strtoll(ptr, NULL, 10);
2489
2490 while (isdigit(*ptr))
2491 ptr ++;
2492 }
2493 else if (isalpha(*ptr))
2494 {
2495 date = httpGetDateTime(ptr);
2496 while (*ptr != '\0' && *ptr != ';')
2497 ptr ++;
2498 }
e53920b9 2499 else
2500 ptr ++;
e1d6a774 2501 }
2502
2503 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2504 "check_if_modified: %d sizes=" CUPS_LLFMT ","
2505 CUPS_LLFMT " dates=%d,%d",
2506 con->http.fd, CUPS_LLCAST size,
2507 CUPS_LLCAST filestats->st_size, (int)date,
2508 (int)filestats->st_mtime);
2509
2510 return ((size != filestats->st_size && size != 0) ||
2511 (date < filestats->st_mtime && date != 0) ||
2512 (size == 0 && date == 0));
2513}
2514
2515
80ca4592 2516#ifdef HAVE_SSL
e1d6a774 2517/*
2518 * 'encrypt_client()' - Enable encryption for the client...
2519 */
2520
2521static int /* O - 1 on success, 0 on error */
2522encrypt_client(cupsd_client_t *con) /* I - Client to encrypt */
2523{
80ca4592 2524# ifdef HAVE_LIBSSL
e1d6a774 2525 SSL_CTX *context; /* Context for encryption */
2526 SSL *conn; /* Connection for encryption */
2527 unsigned long error; /* Error code */
2528
2529
2530 /*
2531 * Create the SSL context and accept the connection...
2532 */
2533
2534 context = SSL_CTX_new(SSLv23_server_method());
2535
2536 SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
2537 SSL_CTX_use_PrivateKey_file(context, ServerKey, SSL_FILETYPE_PEM);
2538 SSL_CTX_use_certificate_file(context, ServerCertificate, SSL_FILETYPE_PEM);
2539
2540 conn = SSL_new(context);
2541
2542 SSL_set_fd(conn, con->http.fd);
2543 if (SSL_accept(conn) != 1)
2544 {
2545 cupsdLogMessage(CUPSD_LOG_ERROR,
2546 "encrypt_client: Unable to encrypt connection from %s!",
2547 con->http.hostname);
2548
2549 while ((error = ERR_get_error()) != 0)
2550 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2551 ERR_error_string(error, NULL));
2552
2553 SSL_CTX_free(context);
2554 SSL_free(conn);
2555 return (0);
2556 }
2557
2558 cupsdLogMessage(CUPSD_LOG_DEBUG,
2559 "encrypt_client: %d Connection from %s now encrypted.",
2560 con->http.fd, con->http.hostname);
2561
2562 con->http.tls = conn;
2563 return (1);
2564
80ca4592 2565# elif defined(HAVE_GNUTLS)
e1d6a774 2566 http_tls_t *conn; /* TLS session object */
2567 int error; /* Error code */
2568 gnutls_certificate_server_credentials *credentials;
2569 /* TLS credentials */
2570
2571
2572 /*
2573 * Verify that we have a certificate...
2574 */
2575
2576 if (access(ServerKey, 0) || access(ServerCertificate, 0))
2577 {
2578 /*
2579 * Nope, make a self-signed certificate...
2580 */
2581
2582 make_certificate();
2583 }
2584
2585 /*
2586 * Create the SSL object and perform the SSL handshake...
2587 */
2588
89d46774 2589 conn = (http_tls_t *)malloc(sizeof(http_tls_t));
e1d6a774 2590
2591 if (conn == NULL)
2592 return (0);
2593
2594 credentials = (gnutls_certificate_server_credentials *)
2595 malloc(sizeof(gnutls_certificate_server_credentials));
2596 if (credentials == NULL)
2597 {
2598 cupsdLogMessage(CUPSD_LOG_ERROR,
2599 "encrypt_client: Unable to encrypt connection from %s!",
2600 con->http.hostname);
2601 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s", strerror(errno));
2602
2603 free(conn);
2604 return (0);
2605 }
2606
2607 gnutls_certificate_allocate_credentials(credentials);
2608 gnutls_certificate_set_x509_key_file(*credentials, ServerCertificate,
2609 ServerKey, GNUTLS_X509_FMT_PEM);
2610
2611 gnutls_init(&(conn->session), GNUTLS_SERVER);
2612 gnutls_set_default_priority(conn->session);
2613 gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
2614 gnutls_transport_set_ptr(conn->session,
2615 (gnutls_transport_ptr)((long)con->http.fd));
2616
2617 error = gnutls_handshake(conn->session);
2618
2619 if (error != GNUTLS_E_SUCCESS)
2620 {
2621 cupsdLogMessage(CUPSD_LOG_ERROR,
2622 "encrypt_client: Unable to encrypt connection from %s!",
2623 con->http.hostname);
2624 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2625 gnutls_strerror(error));
2626
2627 gnutls_deinit(conn->session);
2628 gnutls_certificate_free_credentials(*credentials);
2629 free(conn);
2630 free(credentials);
2631 return (0);
2632 }
2633
2634 cupsdLogMessage(CUPSD_LOG_DEBUG,
2635 "encrypt_client: %d Connection from %s now encrypted.",
2636 con->http.fd, con->http.hostname);
2637
2638 conn->credentials = credentials;
2639 con->http.tls = conn;
2640 return (1);
2641
80ca4592 2642# elif defined(HAVE_CDSASSL)
89d46774 2643 OSStatus error; /* Error code */
2644 http_tls_t *conn; /* CDSA connection information */
2645 cdsa_conn_ref_t u; /* Connection reference union */
e1d6a774 2646
2647
89d46774 2648 if ((conn = (http_tls_t *)malloc(sizeof(http_tls_t))) == NULL)
2649 return (0);
e1d6a774 2650
89d46774 2651 error = 0;
2652 conn->session = NULL;
2653 conn->certsArray = get_cdsa_server_certs();
e1d6a774 2654
89d46774 2655 if (!conn->certsArray)
e1d6a774 2656 {
2657 cupsdLogMessage(CUPSD_LOG_ERROR,
2658 "EncryptClient: Could not find signing key in keychain "
2659 "\"%s\"", ServerCertificate);
2660 error = errSSLBadCert; /* errSSLBadConfiguration is a better choice, but not available on 10.2.x */
2661 }
2662
2663 if (!error)
89d46774 2664 error = SSLNewContext(true, &conn->session);
e1d6a774 2665
2666 if (!error)
89d46774 2667 error = SSLSetIOFuncs(conn->session, _httpReadCDSA, _httpWriteCDSA);
2668
2669 if (!error)
ed486911 2670 error = SSLSetProtocolVersionEnabled(conn->session, kSSLProtocol2, false);
e1d6a774 2671
2672 if (!error)
e53920b9 2673 {
2674 /*
2675 * Use a union to resolve warnings about int/pointer size mismatches...
2676 */
2677
2678 u.connection = NULL;
2679 u.sock = con->http.fd;
89d46774 2680 error = SSLSetConnection(conn->session, u.connection);
e53920b9 2681 }
e1d6a774 2682
2683 if (!error)
89d46774 2684 error = SSLSetAllowsExpiredCerts(conn->session, true);
e1d6a774 2685
2686 if (!error)
89d46774 2687 error = SSLSetAllowsAnyRoot(conn->session, true);
ef416fc2 2688
89d46774 2689 if (!error)
2690 error = SSLSetCertificate(conn->session, conn->certsArray);
ef416fc2 2691
e1d6a774 2692 if (!error)
2693 {
2694 /*
2695 * Perform SSL/TLS handshake
2696 */
ef416fc2 2697
89d46774 2698 while ((error = SSLHandshake(conn->session)) == errSSLWouldBlock)
e1d6a774 2699 usleep(1000);
2700 }
ef416fc2 2701
e1d6a774 2702 if (error)
2703 {
2704 cupsdLogMessage(CUPSD_LOG_ERROR,
2705 "encrypt_client: Unable to encrypt connection from %s!",
2706 con->http.hostname);
ef416fc2 2707
ed486911 2708 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s (%d)",
2709 cssmErrorString(error), (int)error);
ef416fc2 2710
e1d6a774 2711 con->http.error = error;
2712 con->http.status = HTTP_ERROR;
ef416fc2 2713
89d46774 2714 if (conn->session)
2715 SSLDisposeContext(conn->session);
2716
2717 if (conn->certsArray)
2718 CFRelease(conn->certsArray);
2719
2720 free(conn);
ef416fc2 2721
e1d6a774 2722 return (0);
ef416fc2 2723 }
2724
e1d6a774 2725 cupsdLogMessage(CUPSD_LOG_DEBUG,
2726 "encrypt_client: %d Connection from %s now encrypted.",
2727 con->http.fd, con->http.hostname);
ef416fc2 2728
e1d6a774 2729 con->http.tls = conn;
2730 return (1);
2731
80ca4592 2732# endif /* HAVE_LIBSSL */
ef416fc2 2733}
80ca4592 2734#endif /* HAVE_SSL */
ef416fc2 2735
2736
2737#ifdef HAVE_CDSASSL
2738/*
2739 * 'get_cdsa_server_certs()' - Convert a keychain name into the CFArrayRef
2740 * required by SSLSetCertificate.
2741 *
2742 * For now we assumes that there is exactly one SecIdentity in the
2743 * keychain - i.e. there is exactly one matching cert/private key pair.
2744 * In the future we will search a keychain for a SecIdentity matching a
2745 * specific criteria. We also skip the operation of adding additional
2746 * non-signing certs from the keychain to the CFArrayRef.
2747 *
2748 * To create a self-signed certificate for testing use the certtool.
2749 * Executing the following as root will do it:
2750 *
b423cd4c 2751 * certtool c k=/Library/Keychains/System.keychain
ef416fc2 2752 */
2753
2754static CFArrayRef /* O - Array of certificates */
2755get_cdsa_server_certs(void)
2756{
2757 OSStatus err; /* Error info */
2758 SecKeychainRef kcRef; /* Keychain reference */
2759 SecIdentitySearchRef srchRef; /* Search reference */
2760 SecIdentityRef identity; /* Identity */
2761 CFArrayRef ca; /* Certificate array */
2762
2763
2764 kcRef = NULL;
2765 srchRef = NULL;
2766 identity = NULL;
2767 ca = NULL;
2768 err = SecKeychainOpen(ServerCertificate, &kcRef);
2769
2770 if (err)
2771 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot open keychain \"%s\", error %d.",
2772 ServerCertificate, (int)err);
2773 else
2774 {
2775 /*
2776 * Search for "any" identity matching specified key use;
2777 * in this app, we expect there to be exactly one.
2778 */
2779
2780 err = SecIdentitySearchCreate(kcRef, CSSM_KEYUSE_SIGN, &srchRef);
2781
2782 if (err)
2783 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2784 "Cannot find signing key in keychain \"%s\", error %d",
2785 ServerCertificate, (int)err);
2786 else
2787 {
2788 err = SecIdentitySearchCopyNext(srchRef, &identity);
2789
2790 if (err)
2791 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2792 "Cannot find signing key in keychain \"%s\", error %d",
2793 ServerCertificate, (int)err);
2794 else
2795 {
2796 if (CFGetTypeID(identity) != SecIdentityGetTypeID())
2797 cupsdLogMessage(CUPSD_LOG_ERROR,
2798 "SecIdentitySearchCopyNext CFTypeID failure!");
2799 else
2800 {
2801 /*
2802 * Found one. Place it in a CFArray.
2803 * TBD: snag other (non-identity) certs from keychain and add them
2804 * to array as well.
2805 */
2806
b423cd4c 2807 ca = CFArrayCreate(NULL, (const void **)&identity, 1, &kCFTypeArrayCallBacks);
ef416fc2 2808
2809 if (ca == nil)
2810 cupsdLogMessage(CUPSD_LOG_ERROR, "CFArrayCreate error");
2811 }
2812
b423cd4c 2813 CFRelease(identity);
ef416fc2 2814 }
2815
b423cd4c 2816 CFRelease(srchRef);
ef416fc2 2817 }
2818
b423cd4c 2819 CFRelease(kcRef);
ef416fc2 2820 }
2821
2822 return (ca);
2823}
2824#endif /* HAVE_CDSASSL */
2825
2826
2827/*
2828 * 'get_file()' - Get a filename and state info.
2829 */
2830
2831static char * /* O - Real filename */
2832get_file(cupsd_client_t *con, /* I - Client connection */
2833 struct stat *filestats, /* O - File information */
2834 char *filename, /* IO - Filename buffer */
2835 int len) /* I - Buffer length */
2836{
2837 int status; /* Status of filesystem calls */
2838 char *ptr; /* Pointer info filename */
2839 int plen; /* Remaining length after pointer */
2840
2841
2842 /*
2843 * Need to add DocumentRoot global...
2844 */
2845
2846 if (!strncmp(con->uri, "/ppd/", 5))
2847 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
2848 else if (!strncmp(con->uri, "/admin/conf/", 12))
2849 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
2850 else if (!strncmp(con->uri, "/admin/log/", 11))
2851 {
2852 if (!strcmp(con->uri + 11, "access_log") && AccessLog[0] == '/')
2853 strlcpy(filename, AccessLog, len);
2854 else if (!strcmp(con->uri + 11, "error_log") && ErrorLog[0] == '/')
2855 strlcpy(filename, ErrorLog, len);
2856 else if (!strcmp(con->uri + 11, "page_log") && PageLog[0] == '/')
2857 strlcpy(filename, PageLog, len);
2858 else
2859 return (NULL);
2860 }
d6ae789d 2861 else if (con->language)
ef416fc2 2862 snprintf(filename, len, "%s/%s%s", DocumentRoot, con->language->language,
d6ae789d 2863 con->uri);
ef416fc2 2864 else
2865 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2866
2867 if ((ptr = strchr(filename, '?')) != NULL)
2868 *ptr = '\0';
2869
2870 /*
2871 * Grab the status for this language; if there isn't a language-specific file
2872 * then fallback to the default one...
2873 */
2874
d6ae789d 2875 if ((status = stat(filename, filestats)) != 0 && con->language &&
2876 strncmp(con->uri, "/ppd/", 5) &&
2877 strncmp(con->uri, "/admin/conf/", 12) &&
2878 strncmp(con->uri, "/admin/log/", 11))
ef416fc2 2879 {
2880 /*
d6ae789d 2881 * Drop the country code...
ef416fc2 2882 */
2883
d6ae789d 2884 char ll[3]; /* Short language name */
2885
2886
2887 strlcpy(ll, con->language->language, sizeof(ll));
2888 snprintf(filename, len, "%s/%s%s", DocumentRoot, ll, con->uri);
2889
2890 if ((ptr = strchr(filename, '?')) != NULL)
2891 *ptr = '\0';
2892
2893 if ((status = stat(filename, filestats)) != 0)
ef416fc2 2894 {
d6ae789d 2895 /*
2896 * Drop the language prefix and try the root directory...
2897 */
2898
ef416fc2 2899 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2900
2901 if ((ptr = strchr(filename, '?')) != NULL)
2902 *ptr = '\0';
2903
2904 status = stat(filename, filestats);
2905 }
2906 }
2907
2908 /*
2909 * If we're found a directory, get the index.html file instead...
2910 */
2911
2912 if (!status && S_ISDIR(filestats->st_mode))
2913 {
2914 if (filename[strlen(filename) - 1] != '/')
2915 strlcat(filename, "/", len);
2916
2917 ptr = filename + strlen(filename);
2918 plen = len - (ptr - filename);
2919
2920 strlcpy(ptr, "index.html", plen);
2921 status = stat(filename, filestats);
2922
2923#ifdef HAVE_JAVA
2924 if (status)
2925 {
2926 strlcpy(ptr, "index.class", plen);
2927 status = stat(filename, filestats);
2928 }
2929#endif /* HAVE_JAVA */
2930
2931#ifdef HAVE_PERL
2932 if (status)
2933 {
2934 strlcpy(ptr, "index.pl", plen);
2935 status = stat(filename, filestats);
2936 }
2937#endif /* HAVE_PERL */
2938
2939#ifdef HAVE_PHP
2940 if (status)
2941 {
2942 strlcpy(ptr, "index.php", plen);
2943 status = stat(filename, filestats);
2944 }
2945#endif /* HAVE_PHP */
2946
2947#ifdef HAVE_PYTHON
2948 if (status)
2949 {
2950 strlcpy(ptr, "index.pyc", plen);
2951 status = stat(filename, filestats);
2952 }
2953
2954 if (status)
2955 {
2956 strlcpy(ptr, "index.py", plen);
2957 status = stat(filename, filestats);
2958 }
2959#endif /* HAVE_PYTHON */
2960 }
2961
2962 cupsdLogMessage(CUPSD_LOG_DEBUG2, "get_file: %d filename=%s size=%d",
2963 con->http.fd, filename,
2964 status ? -1 : (int)filestats->st_size);
2965
2966 if (!status)
2967 con->http.data_remaining = (int)filestats->st_size;
2968
2969 if (status)
2970 return (NULL);
2971 else
2972 return (filename);
2973}
2974
2975
2976/*
2977 * 'install_conf_file()' - Install a configuration file.
2978 */
2979
2980static http_status_t /* O - Status */
2981install_conf_file(cupsd_client_t *con) /* I - Connection */
2982{
2983 cups_file_t *in, /* Input file */
2984 *out; /* Output file */
2985 char buffer[1024]; /* Copy buffer */
2986 int bytes; /* Number of bytes */
2987 char conffile[1024], /* Configuration filename */
2988 newfile[1024], /* New config filename */
2989 oldfile[1024]; /* Old config filename */
2990 struct stat confinfo; /* Config file info */
2991
2992
2993 /*
2994 * First construct the filenames...
2995 */
2996
2997 snprintf(conffile, sizeof(conffile), "%s%s", ServerRoot, con->uri + 11);
2998 snprintf(newfile, sizeof(newfile), "%s%s.N", ServerRoot, con->uri + 11);
2999 snprintf(oldfile, sizeof(oldfile), "%s%s.O", ServerRoot, con->uri + 11);
3000
3001 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...", conffile);
3002
3003 /*
3004 * Get the owner, group, and permissions of the configuration file.
3005 * If it doesn't exist, assign it to the User and Group in the
3006 * cupsd.conf file with mode 0640 permissions.
3007 */
3008
3009 if (stat(conffile, &confinfo))
3010 {
3011 confinfo.st_uid = User;
3012 confinfo.st_gid = Group;
3013 confinfo.st_mode = ConfigFilePerm;
3014 }
3015
3016 /*
3017 * Open the request file and new config file...
3018 */
3019
3020 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
3021 {
3022 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\" - %s",
3023 con->filename, strerror(errno));
3024 return (HTTP_SERVER_ERROR);
3025 }
3026
3027 if ((out = cupsFileOpen(newfile, "wb")) == NULL)
3028 {
3029 cupsFileClose(in);
3030 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open config file \"%s\" - %s",
3031 newfile, strerror(errno));
3032 return (HTTP_SERVER_ERROR);
3033 }
3034
3035 fchmod(cupsFileNumber(out), confinfo.st_mode);
3036 fchown(cupsFileNumber(out), confinfo.st_uid, confinfo.st_gid);
3037
3038 /*
3039 * Copy from the request to the new config file...
3040 */
3041
3042 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
3043 if (cupsFileWrite(out, buffer, bytes) < bytes)
3044 {
3045 cupsdLogMessage(CUPSD_LOG_ERROR,
3046 "Unable to copy to config file \"%s\" - %s",
3047 newfile, strerror(errno));
3048
3049 cupsFileClose(in);
3050 cupsFileClose(out);
3051 unlink(newfile);
3052
3053 return (HTTP_SERVER_ERROR);
3054 }
3055
3056 /*
3057 * Close the files...
3058 */
3059
3060 cupsFileClose(in);
3061 if (cupsFileClose(out))
3062 {
3063 cupsdLogMessage(CUPSD_LOG_ERROR,
3064 "Error file closing config file \"%s\" - %s",
3065 newfile, strerror(errno));
3066
3067 unlink(newfile);
3068
3069 return (HTTP_SERVER_ERROR);
3070 }
3071
3072 /*
3073 * Remove the request file...
3074 */
3075
3076 unlink(con->filename);
3077 cupsdClearString(&con->filename);
3078
3079 /*
3080 * Unlink the old backup, rename the current config file to the backup
3081 * filename, and rename the new config file to the config file name...
3082 */
3083
3084 if (unlink(oldfile))
3085 if (errno != ENOENT)
3086 {
3087 cupsdLogMessage(CUPSD_LOG_ERROR,
3088 "Unable to remove backup config file \"%s\" - %s",
3089 oldfile, strerror(errno));
3090
3091 unlink(newfile);
3092
3093 return (HTTP_SERVER_ERROR);
3094 }
3095
3096 if (rename(conffile, oldfile))
3097 if (errno != ENOENT)
3098 {
3099 cupsdLogMessage(CUPSD_LOG_ERROR,
3100 "Unable to rename old config file \"%s\" - %s",
3101 conffile, strerror(errno));
3102
3103 unlink(newfile);
3104
3105 return (HTTP_SERVER_ERROR);
3106 }
3107
3108 if (rename(newfile, conffile))
3109 {
3110 cupsdLogMessage(CUPSD_LOG_ERROR,
3111 "Unable to rename new config file \"%s\" - %s",
3112 newfile, strerror(errno));
3113
3114 rename(oldfile, conffile);
3115 unlink(newfile);
3116
3117 return (HTTP_SERVER_ERROR);
3118 }
3119
3120 /*
3121 * If the cupsd.conf file was updated, set the NeedReload flag...
3122 */
3123
3124 if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
3125 NeedReload = RELOAD_CUPSD;
3126 else
3127 NeedReload = RELOAD_ALL;
3128
3129 ReloadTime = time(NULL);
3130
3131 /*
3132 * Return that the file was created successfully...
3133 */
3134
3135 return (HTTP_CREATED);
3136}
3137
3138
e1d6a774 3139/*
3140 * 'is_cgi()' - Is the resource a CGI script/program?
3141 */
3142
3143static int /* O - 1 = CGI, 0 = file */
3144is_cgi(cupsd_client_t *con, /* I - Client connection */
3145 const char *filename, /* I - Real filename */
3146 struct stat *filestats, /* I - File information */
3147 mime_type_t *type) /* I - MIME type */
3148{
3149 const char *options; /* Options on URL */
3150
3151
3152 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3153 "is_cgi(con=%p, filename=\"%s\", filestats=%p, type=%s/%s)\n",
3154 con, filename, filestats, type ? type->super : "unknown",
3155 type ? type->type : "unknown");
3156
3157 /*
3158 * Get the options, if any...
3159 */
3160
3161 if ((options = strchr(con->uri, '?')) != NULL)
3162 options ++;
3163
3164 /*
3165 * Check for known types...
3166 */
3167
3168 if (!type || strcasecmp(type->super, "application"))
3169 {
3170 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3171 return (0);
3172 }
3173
3174 if (!strcasecmp(type->type, "x-httpd-cgi") &&
3175 (filestats->st_mode & 0111))
3176 {
3177 /*
3178 * "application/x-httpd-cgi" is a CGI script.
3179 */
3180
3181 cupsdSetString(&con->command, filename);
3182
3183 filename = strrchr(filename, '/') + 1; /* Filename always absolute */
3184
3185 cupsdSetString(&con->options, options);
3186
3187 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3188 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3189 con->command, con->options);
3190
3191 return (1);
3192 }
3193#ifdef HAVE_JAVA
3194 else if (!strcasecmp(type->type, "x-httpd-java"))
3195 {
3196 /*
3197 * "application/x-httpd-java" is a Java servlet.
3198 */
3199
3200 cupsdSetString(&con->command, CUPS_JAVA);
3201
3202 if (options)
3203 cupsdSetStringf(&con->options, "%s %s", filename, options);
3204 else
3205 cupsdSetString(&con->options, filename);
3206
3207 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3208 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3209 con->command, con->options);
3210
3211 return (1);
3212 }
3213#endif /* HAVE_JAVA */
3214#ifdef HAVE_PERL
3215 else if (!strcasecmp(type->type, "x-httpd-perl"))
3216 {
3217 /*
3218 * "application/x-httpd-perl" is a Perl page.
3219 */
3220
3221 cupsdSetString(&con->command, CUPS_PERL);
3222
3223 if (options)
3224 cupsdSetStringf(&con->options, "%s %s", filename, options);
3225 else
3226 cupsdSetString(&con->options, filename);
3227
3228 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3229 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3230 con->command, con->options);
3231
3232 return (1);
3233 }
3234#endif /* HAVE_PERL */
3235#ifdef HAVE_PHP
3236 else if (!strcasecmp(type->type, "x-httpd-php"))
3237 {
3238 /*
3239 * "application/x-httpd-php" is a PHP page.
3240 */
3241
3242 cupsdSetString(&con->command, CUPS_PHP);
3243
3244 if (options)
3245 cupsdSetStringf(&con->options, "%s %s", filename, options);
3246 else
3247 cupsdSetString(&con->options, filename);
3248
3249 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3250 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3251 con->command, con->options);
3252
3253 return (1);
3254 }
3255#endif /* HAVE_PHP */
3256#ifdef HAVE_PYTHON
3257 else if (!strcasecmp(type->type, "x-httpd-python"))
3258 {
3259 /*
3260 * "application/x-httpd-python" is a Python page.
3261 */
3262
3263 cupsdSetString(&con->command, CUPS_PYTHON);
3264
3265 if (options)
3266 cupsdSetStringf(&con->options, "%s %s", filename, options);
3267 else
3268 cupsdSetString(&con->options, filename);
3269
3270 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3271 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3272 con->command, con->options);
3273
3274 return (1);
3275 }
3276#endif /* HAVE_PYTHON */
3277
3278 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3279
3280 return (0);
3281}
3282
3283
ef416fc2 3284/*
3285 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3286 */
3287
3288static int /* O - 0 if relative, 1 if absolute */
3289is_path_absolute(const char *path) /* I - Input path */
3290{
3291 /*
3292 * Check for a leading slash...
3293 */
3294
3295 if (path[0] != '/')
3296 return (0);
3297
3298 /*
3299 * Check for "/.." in the path...
3300 */
3301
3302 while ((path = strstr(path, "/..")) != NULL)
3303 {
3304 if (!path[3] || path[3] == '/')
3305 return (0);
3306
3307 path ++;
3308 }
3309
3310 /*
3311 * If we haven't found any relative paths, return 1 indicating an
3312 * absolute path...
3313 */
3314
3315 return (1);
3316}
3317
3318
4744bd90 3319#ifdef HAVE_GNUTLS
3320/*
3321 * 'make_certificate()' - Make a self-signed SSL/TLS certificate.
3322 */
3323
3324static void
3325make_certificate(void)
3326{
3327 gnutls_x509_crt crt; /* Self-signed certificate */
3328 gnutls_x509_privkey key; /* Encryption key */
3329 cups_lang_t *language; /* Default language info */
3330 cups_file_t *fp; /* Key/cert file */
3331 unsigned char buffer[8192]; /* Buffer for x509 data */
3332 size_t bytes; /* Number of bytes of data */
3333 unsigned char serial[4]; /* Serial number buffer */
3334 time_t curtime; /* Current time */
3335 int result; /* Result of GNU TLS calls */
3336
3337
3338 /*
3339 * Create the encryption key...
3340 */
3341
3342 cupsdLogMessage(CUPSD_LOG_INFO, "Generating server key...");
3343
3344 gnutls_x509_privkey_init(&key);
3345 gnutls_x509_privkey_generate(key, GNUTLS_PK_RSA, 2048, 0);
3346
3347 /*
3348 * Save it...
3349 */
3350
3351 bytes = sizeof(buffer);
3352
3353 if ((result = gnutls_x509_privkey_export(key, GNUTLS_X509_FMT_PEM,
3354 buffer, &bytes)) < 0)
3355 {
3356 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to export server key - %s",
3357 gnutls_strerror(result));
3358 gnutls_x509_privkey_deinit(key);
3359 return;
3360 }
3361 else if ((fp = cupsFileOpen(ServerKey, "w")) != NULL)
3362 {
3363 cupsFileWrite(fp, (char *)buffer, bytes);
3364 cupsFileClose(fp);
3365
3366 cupsdLogMessage(CUPSD_LOG_INFO, "Created server key file \"%s\"...",
3367 ServerKey);
3368 }
3369 else
3370 {
3371 cupsdLogMessage(CUPSD_LOG_ERROR,
3372 "Unable to create server key file \"%s\" - %s",
3373 ServerKey, strerror(errno));
3374 gnutls_x509_privkey_deinit(key);
3375 return;
3376 }
3377
3378 /*
3379 * Create the self-signed certificate...
3380 */
3381
3382 cupsdLogMessage(CUPSD_LOG_INFO, "Generating self-signed certificate...");
3383
3384 language = cupsLangDefault();
3385 curtime = time(NULL);
3386 serial[0] = curtime >> 24;
3387 serial[1] = curtime >> 16;
3388 serial[2] = curtime >> 8;
3389 serial[3] = curtime;
3390
3391 gnutls_x509_crt_init(&crt);
3392 if (strlen(language->language) == 5)
3393 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3394 language->language + 3, 2);
3395 else
3396 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3397 "US", 2);
3398 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COMMON_NAME, 0,
3399 ServerName, strlen(ServerName));
3400 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
3401 ServerName, strlen(ServerName));
3402 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME,
3403 0, "Unknown", 7);
3404 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0,
3405 "Unknown", 7);
3406 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_LOCALITY_NAME, 0,
3407 "Unknown", 7);
3408 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_PKCS9_EMAIL, 0,
3409 ServerAdmin, strlen(ServerAdmin));
3410 gnutls_x509_crt_set_key(crt, key);
3411 gnutls_x509_crt_set_serial(crt, serial, sizeof(serial));
3412 gnutls_x509_crt_set_activation_time(crt, curtime);
3413 gnutls_x509_crt_set_expiration_time(crt, curtime + 10 * 365 * 86400);
3414 gnutls_x509_crt_set_ca_status(crt, 0);
3415 gnutls_x509_crt_set_subject_alternative_name(crt, GNUTLS_SAN_DNSNAME,
3416 ServerName);
3417 gnutls_x509_crt_set_key_purpose_oid(crt, GNUTLS_KP_TLS_WWW_SERVER, 0);
3418 gnutls_x509_crt_set_key_usage(crt, GNUTLS_KEY_KEY_ENCIPHERMENT);
3419 gnutls_x509_crt_set_version(crt, 3);
3420
3421 bytes = sizeof(buffer);
3422 if (gnutls_x509_crt_get_key_id(crt, 0, buffer, &bytes) >= 0)
3423 gnutls_x509_crt_set_subject_key_id(crt, buffer, bytes);
3424
3425 gnutls_x509_crt_sign(crt, crt, key);
3426
3427 /*
3428 * Save it...
3429 */
3430
3431 bytes = sizeof(buffer);
3432 if ((result = gnutls_x509_crt_export(crt, GNUTLS_X509_FMT_PEM,
3433 buffer, &bytes)) < 0)
3434 cupsdLogMessage(CUPSD_LOG_ERROR,
3435 "Unable to export server certificate - %s",
3436 gnutls_strerror(result));
3437 else if ((fp = cupsFileOpen(ServerCertificate, "w")) != NULL)
3438 {
3439 cupsFileWrite(fp, (char *)buffer, bytes);
3440 cupsFileClose(fp);
3441
3442 cupsdLogMessage(CUPSD_LOG_INFO,
3443 "Created 10-year server certificate file \"%s\"...",
3444 ServerCertificate);
3445 }
3446 else
3447 cupsdLogMessage(CUPSD_LOG_ERROR,
3448 "Unable to create server certificate file \"%s\" - %s",
3449 ServerCertificate, strerror(errno));
3450
3451 /*
3452 * Cleanup...
3453 */
3454
3455 gnutls_x509_crt_deinit(crt);
3456 gnutls_x509_privkey_deinit(key);
3457}
3458#endif /* HAVE_GNUTLS */
3459
3460
ef416fc2 3461/*
3462 * 'pipe_command()' - Pipe the output of a command to the remote client.
3463 */
3464
3465static int /* O - Process ID */
3466pipe_command(cupsd_client_t *con, /* I - Client connection */
3467 int infile, /* I - Standard input for command */
3468 int *outfile, /* O - Standard output for command */
3469 char *command, /* I - Command to run */
3470 char *options, /* I - Options for command */
3471 int root) /* I - Run as root? */
3472{
3473 int i; /* Looping var */
3474 int pid; /* Process ID */
b423cd4c 3475 char *commptr, /* Command string pointer */
3476 commch; /* Command string character */
ef416fc2 3477 char *uriptr; /* URI string pointer */
3478 int fds[2]; /* Pipe FDs */
3479 int argc; /* Number of arguments */
3480 int envc; /* Number of environment variables */
3481 char argbuf[10240], /* Argument buffer */
3482 *argv[100], /* Argument strings */
b423cd4c 3483 *envp[MAX_ENV + 17]; /* Environment variables */
ef416fc2 3484 char content_length[1024], /* CONTENT_LENGTH environment variable */
3485 content_type[1024], /* CONTENT_TYPE environment variable */
3486 http_cookie[32768], /* HTTP_COOKIE environment variable */
3487 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3488 lang[1024], /* LANG environment variable */
b423cd4c 3489 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 3490 *query_string, /* QUERY_STRING env variable */
3491 remote_addr[1024], /* REMOTE_ADDR environment variable */
3492 remote_host[1024], /* REMOTE_HOST environment variable */
3493 remote_user[1024], /* REMOTE_USER environment variable */
3494 script_name[1024], /* SCRIPT_NAME environment variable */
3495 server_name[1024], /* SERVER_NAME environment variable */
3496 server_port[1024]; /* SERVER_PORT environment variable */
3497
3498
3499 /*
3500 * Parse a copy of the options string, which is of the form:
3501 *
b423cd4c 3502 * argument+argument+argument
3503 * ?argument+argument+argument
3504 * param=value&param=value
3505 * ?param=value&param=value
3506 * /name?argument+argument+argument
3507 * /name?param=value&param=value
ef416fc2 3508 *
3509 * If the string contains an "=" character after the initial name,
3510 * then we treat it as a HTTP GET form request and make a copy of
3511 * the remaining string for the environment variable.
3512 *
3513 * The string is always parsed out as command-line arguments, to
3514 * be consistent with Apache...
3515 */
3516
3517 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3518 "pipe_command: command=\"%s\", options=\"%s\"",
f301802f 3519 command, options ? options : "(null)");
ef416fc2 3520
b423cd4c 3521 argv[0] = command;
ef416fc2 3522 query_string = NULL;
3523
b423cd4c 3524 if (options)
3525 strlcpy(argbuf, options, sizeof(argbuf));
3526 else
3527 argbuf[0] = '\0';
3528
3529 if (argbuf[0] == '/')
ef416fc2 3530 {
3531 /*
b423cd4c 3532 * Found some trailing path information, set PATH_INFO...
ef416fc2 3533 */
3534
b423cd4c 3535 if ((commptr = strchr(argbuf, '?')) == NULL)
3536 commptr = argbuf + strlen(argbuf);
ef416fc2 3537
b423cd4c 3538 commch = *commptr;
3539 *commptr = '\0';
3540 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
3541 *commptr = commch;
3542 }
3543 else
3544 {
3545 commptr = argbuf;
3546 path_info[0] = '\0';
3547 }
ef416fc2 3548
b423cd4c 3549 if (*commptr == '?' && con->operation == HTTP_GET)
3550 {
3551 commptr ++;
3552 cupsdSetStringf(&query_string, "QUERY_STRING=%s", commptr);
3553 }
ef416fc2 3554
b423cd4c 3555 argc = 1;
ef416fc2 3556
b423cd4c 3557 if (*commptr)
3558 {
3559 argv[argc ++] = commptr;
ef416fc2 3560
b423cd4c 3561 for (; *commptr && argc < 99; commptr ++)
3562 {
ef416fc2 3563 /*
b423cd4c 3564 * Break arguments whenever we see a + or space...
ef416fc2 3565 */
3566
b423cd4c 3567 if (*commptr == ' ' || *commptr == '+')
3568 {
3569 while (*commptr == ' ' || *commptr == '+')
3570 *commptr++ = '\0';
ef416fc2 3571
b423cd4c 3572 /*
3573 * If we don't have a blank string, save it as another argument...
3574 */
ef416fc2 3575
b423cd4c 3576 if (*commptr)
3577 {
3578 argv[argc] = commptr;
3579 argc ++;
3580 }
3581 else
3582 break;
3583 }
3584 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
3585 isxdigit(commptr[2] & 255))
3586 {
3587 /*
3588 * Convert the %xx notation to the individual character.
3589 */
ef416fc2 3590
b423cd4c 3591 if (commptr[1] >= '0' && commptr[1] <= '9')
3592 *commptr = (commptr[1] - '0') << 4;
3593 else
3594 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
ef416fc2 3595
b423cd4c 3596 if (commptr[2] >= '0' && commptr[2] <= '9')
3597 *commptr |= commptr[2] - '0';
3598 else
3599 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 3600
b423cd4c 3601 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 3602
b423cd4c 3603 /*
3604 * Check for a %00 and break if that is the case...
3605 */
ef416fc2 3606
b423cd4c 3607 if (!*commptr)
3608 break;
3609 }
ef416fc2 3610 }
3611 }
3612
3613 argv[argc] = NULL;
3614
ef416fc2 3615 /*
3616 * Setup the environment variables as needed...
3617 */
3618
3619 if (con->language)
3620 snprintf(lang, sizeof(lang), "LANG=%s.UTF-8", con->language->language);
3621 else
3622 strcpy(lang, "LANG=C");
3623
3624 strcpy(remote_addr, "REMOTE_ADDR=");
3625 httpAddrString(con->http.hostaddr, remote_addr + 12,
3626 sizeof(remote_addr) - 12);
3627
3628 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
3629 con->http.hostname);
3630
3631 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
3632 if ((uriptr = strchr(script_name, '?')) != NULL)
3633 *uriptr = '\0';
3634
3635 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
3636
3637 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3638 con->servername);
3639
3640 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
3641
3642 envp[envc ++] = lang;
3643 envp[envc ++] = "REDIRECT_STATUS=1";
3644 envp[envc ++] = server_name;
3645 envp[envc ++] = server_port;
3646 envp[envc ++] = remote_addr;
3647 envp[envc ++] = remote_host;
3648 envp[envc ++] = script_name;
3649
b423cd4c 3650 if (path_info[0])
3651 envp[envc ++] = path_info;
3652
ef416fc2 3653 if (con->username[0])
3654 {
3655 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
3656
3657 envp[envc ++] = remote_user;
3658 }
3659
3660 if (con->http.version == HTTP_1_1)
3661 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
3662 else if (con->http.version == HTTP_1_0)
3663 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
3664 else
3665 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
3666
3667 if (con->http.cookie)
3668 {
3669 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
3670 con->http.cookie);
3671 envp[envc ++] = http_cookie;
3672 }
3673
3674 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
3675 {
3676 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
3677 con->http.fields[HTTP_FIELD_USER_AGENT]);
3678 envp[envc ++] = http_user_agent;
3679 }
3680
3681 if (con->operation == HTTP_GET)
3682 {
3683 for (i = 0; i < argc; i ++)
3684 cupsdLogMessage(CUPSD_LOG_DEBUG2, "argv[%d] = \"%s\"", i, argv[i]);
3685
3686 envp[envc ++] = "REQUEST_METHOD=GET";
3687
3688 if (query_string)
3689 {
3690 /*
3691 * Add GET form variables after ?...
3692 */
3693
3694 envp[envc ++] = query_string;
3695 }
3696 }
3697 else
3698 {
e1d6a774 3699 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
3700 CUPS_LLCAST con->bytes);
ef416fc2 3701 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
3702 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
3703
3704 envp[envc ++] = "REQUEST_METHOD=POST";
3705 envp[envc ++] = content_length;
3706 envp[envc ++] = content_type;
3707 }
3708
3709 /*
3710 * Tell the CGI if we are using encryption...
3711 */
3712
a74454a7 3713 if (con->http.tls)
ef416fc2 3714 envp[envc ++] = "HTTPS=ON";
3715
3716 /*
3717 * Terminate the environment array...
3718 */
3719
3720 envp[envc] = NULL;
3721
3722 if (LogLevel == CUPSD_LOG_DEBUG2)
3723 {
3724 for (i = 0; i < argc; i ++)
3725 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3726 "pipe_command: argv[%d] = \"%s\"", i, argv[i]);
3727 for (i = 0; i < envc; i ++)
3728 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3729 "pipe_command: envp[%d] = \"%s\"", i, envp[i]);
3730 }
3731
3732 /*
3733 * Create a pipe for the output...
3734 */
3735
3736 if (cupsdOpenPipe(fds))
3737 {
3738 cupsdClearString(&query_string);
3739
3740 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create pipes for CGI %s - %s",
3741 argv[0], strerror(errno));
3742 return (0);
3743 }
3744
3745 /*
3746 * Then execute the command...
3747 */
3748
3749 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
3750 -1, root, &pid) < 0)
3751 {
3752 /*
3753 * Error - can't fork!
3754 */
3755
3756 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to fork for CGI %s - %s", argv[0],
3757 strerror(errno));
3758
3759 cupsdClosePipe(fds);
3760 pid = 0;
3761 }
3762 else
3763 {
3764 /*
3765 * Fork successful - return the PID...
3766 */
3767
3768 if (con->username[0])
3769 cupsdAddCert(pid, con->username);
3770
3771 cupsdLogMessage(CUPSD_LOG_DEBUG, "CGI %s started - PID = %d", command, pid);
3772
3773 *outfile = fds[0];
3774 close(fds[1]);
3775 }
3776
3777 cupsdClearString(&query_string);
3778
3779 return (pid);
3780}
3781
3782
3783/*
a74454a7 3784 * 'write_file()' - Send a file via HTTP.
e1d6a774 3785 */
3786
3787static int /* O - 0 on failure, 1 on success */
a74454a7 3788write_file(cupsd_client_t *con, /* I - Client connection */
3789 http_status_t code, /* I - HTTP status */
3790 char *filename, /* I - Filename */
3791 char *type, /* I - File type */
3792 struct stat *filestats) /* O - File information */
e1d6a774 3793{
3794 con->file = open(filename, O_RDONLY);
3795
a74454a7 3796 cupsdLogMessage(CUPSD_LOG_DEBUG, "write_file: %d file=%d", con->http.fd,
e1d6a774 3797 con->file);
3798
3799 if (con->file < 0)
3800 return (0);
3801
3802 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
3803
3804 con->pipe_pid = 0;
3805
3806 if (!cupsdSendHeader(con, code, type))
3807 return (0);
3808
3809 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
3810 httpGetDateString(filestats->st_mtime)) < 0)
3811 return (0);
3812 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
3813 CUPS_LLCAST filestats->st_size) < 0)
3814 return (0);
3815 if (httpPrintf(HTTP(con), "\r\n") < 0)
3816 return (0);
3817
3818 con->http.data_encoding = HTTP_ENCODE_LENGTH;
3819 con->http.data_remaining = filestats->st_size;
3820
3821 if (con->http.data_remaining <= INT_MAX)
3822 con->http._data_remaining = con->http.data_remaining;
3823 else
3824 con->http._data_remaining = INT_MAX;
3825
3826 cupsdLogMessage(CUPSD_LOG_DEBUG2,
a74454a7 3827 "write_file: Adding fd %d to OutputSet...", con->http.fd);
e1d6a774 3828
3829 FD_SET(con->http.fd, OutputSet);
3830
3831 return (1);
3832}
3833
3834
3835/*
c07d5b2d 3836 * End of "$Id: client.c 181 2006-06-22 20:01:18Z jlovell $".
ef416fc2 3837 */
Unnamed repository; edit this file 'description' to name the repository.