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[thirdparty/cups.git] / scheduler / client.c
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ef416fc2 1/*
89d46774 2 * "$Id: client.c 5416 2006-04-17 21:24:17Z mike $"
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.
e1d6a774 45 * send_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>
57#endif /* HAVE_CDSASSL */
4744bd90 58#ifdef HAVE_GNUTLS
59# include <gnutls/x509.h>
60#endif /* HAVE_GNUTLS */
ef416fc2 61
62
63/*
64 * Local functions...
65 */
66
67static int check_if_modified(cupsd_client_t *con,
68 struct stat *filestats);
80ca4592 69#ifdef HAVE_SSL
e1d6a774 70static int encrypt_client(cupsd_client_t *con);
80ca4592 71#endif /* HAVE_SSL */
ef416fc2 72#ifdef HAVE_CDSASSL
73static CFArrayRef get_cdsa_server_certs(void);
74#endif /* HAVE_CDSASSL */
75static char *get_file(cupsd_client_t *con, struct stat *filestats,
76 char *filename, int len);
77static http_status_t install_conf_file(cupsd_client_t *con);
e1d6a774 78static int is_cgi(cupsd_client_t *con, const char *filename,
79 struct stat *filestats, mime_type_t *type);
ef416fc2 80static int is_path_absolute(const char *path);
4744bd90 81#ifdef HAVE_GNUTLS
82static void make_certificate(void);
83#endif /* HAVE_GNUTLS */
ef416fc2 84static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
85 char *command, char *options, int root);
e1d6a774 86static int send_file(cupsd_client_t *con, http_status_t code,
87 char *filename, char *type,
88 struct stat *filestats);
ef416fc2 89
90
91/*
92 * 'cupsdAcceptClient()' - Accept a new client.
93 */
94
95void
96cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
97{
ef416fc2 98 int count; /* Count of connections on a host */
99 int val; /* Parameter value */
bd7854cb 100 cupsd_client_t *con, /* New client pointer */
101 *tempcon; /* Temporary client pointer */
ef416fc2 102 http_addrlist_t *addrlist, /* List of adddresses for host */
103 *addr; /* Current address */
104 socklen_t addrlen; /* Length of address */
105 char *hostname; /* Hostname for address */
106 http_addr_t temp; /* Temporary address variable */
107 static time_t last_dos = 0; /* Time of last DoS attack */
108
109
110 cupsdLogMessage(CUPSD_LOG_DEBUG2,
bd7854cb 111 "cupsdAcceptClient(lis=%p) %d Clients = %d",
112 lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 113
114 /*
115 * Make sure we don't have a full set of clients already...
116 */
117
bd7854cb 118 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 119 return;
120
121 /*
122 * Get a pointer to the next available client...
123 */
124
bd7854cb 125 if (!Clients)
126 Clients = cupsArrayNew(NULL, NULL);
127
128 if (!Clients)
129 return;
130
131 con = calloc(1, sizeof(cupsd_client_t));
ef416fc2 132
ef416fc2 133 con->http.activity = time(NULL);
134 con->file = -1;
135 con->http.hostaddr = &(con->clientaddr);
136
137 /*
138 * Accept the client and get the remote address...
139 */
140
141 addrlen = sizeof(http_addr_t);
142
143 if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
144 &addrlen)) < 0)
145 {
146 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
147 strerror(errno));
bd7854cb 148 free(con);
ef416fc2 149 return;
150 }
151
152#ifdef AF_INET6
153 if (lis->address.addr.sa_family == AF_INET6)
154 {
155 /*
156 * Save the connected port number...
157 */
158
159 con->http.hostaddr->ipv6.sin6_port = lis->address.ipv6.sin6_port;
160
161 /*
162 * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
163 * can more easily use...
164 */
165
166 if (con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
167 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
168 ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
169 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
170 }
171 else
172#endif /* AF_INET6 */
173 if (lis->address.addr.sa_family == AF_INET)
174 con->http.hostaddr->ipv4.sin_port = lis->address.ipv4.sin_port;
175
176 /*
177 * Check the number of clients on the same address...
178 */
179
bd7854cb 180 for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
181 tempcon;
182 tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
183 if (httpAddrEqual(tempcon->http.hostaddr, con->http.hostaddr))
ef416fc2 184 {
185 count ++;
186 if (count >= MaxClientsPerHost)
187 break;
188 }
189
190 if (count >= MaxClientsPerHost)
191 {
192 if ((time(NULL) - last_dos) >= 60)
193 {
194 last_dos = time(NULL);
195 cupsdLogMessage(CUPSD_LOG_WARN,
bd7854cb 196 "Possible DoS attack - more than %d clients connecting "
197 "from %s!",
198 MaxClientsPerHost, tempcon->http.hostname);
ef416fc2 199 }
200
201#ifdef WIN32
202 closesocket(con->http.fd);
203#else
204 close(con->http.fd);
205#endif /* WIN32 */
206
bd7854cb 207 free(con);
ef416fc2 208 return;
209 }
210
211 /*
212 * Get the hostname or format the IP address as needed...
213 */
214
215 if (httpAddrLocalhost(con->http.hostaddr))
216 {
217 /*
218 * Map accesses from the loopback interface to "localhost"...
219 */
220
221 strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
222 hostname = con->http.hostname;
223 }
224 else
225 {
226 /*
227 * Map accesses from the same host to the server name.
228 */
229
230 for (addr = ServerAddrs; addr; addr = addr->next)
231 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
232 break;
233
234 if (addr)
235 {
236 strlcpy(con->http.hostname, ServerName, sizeof(con->http.hostname));
237 hostname = con->http.hostname;
238 }
239 else if (HostNameLookups)
240 hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
241 sizeof(con->http.hostname));
242 else
243 {
244 hostname = NULL;
245 httpAddrString(con->http.hostaddr, con->http.hostname,
246 sizeof(con->http.hostname));
247 }
248 }
249
250 if (hostname == NULL && HostNameLookups == 2)
251 {
252 /*
253 * Can't have an unresolved IP address with double-lookups enabled...
254 */
255
256 cupsdLogMessage(CUPSD_LOG_DEBUG2,
257 "cupsdAcceptClient: Closing connection %d...",
258 con->http.fd);
259
260#ifdef WIN32
261 closesocket(con->http.fd);
262#else
263 close(con->http.fd);
264#endif /* WIN32 */
265
266 cupsdLogMessage(CUPSD_LOG_WARN,
267 "Name lookup failed - connection from %s closed!",
268 con->http.hostname);
bd7854cb 269
270 free(con);
ef416fc2 271 return;
272 }
273
274 if (HostNameLookups == 2)
275 {
276 /*
277 * Do double lookups as needed...
278 */
279
280 if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL)) != NULL)
281 {
282 /*
283 * See if the hostname maps to the same IP address...
284 */
285
286 for (addr = addrlist; addr; addr = addr->next)
287 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
288 break;
289 }
290 else
291 addr = NULL;
292
293 httpAddrFreeList(addrlist);
294
295 if (!addr)
296 {
297 /*
298 * Can't have a hostname that doesn't resolve to the same IP address
299 * with double-lookups enabled...
300 */
301
302 cupsdLogMessage(CUPSD_LOG_DEBUG2,
303 "cupsdAcceptClient: Closing connection %d...",
304 con->http.fd);
305
306#ifdef WIN32
307 closesocket(con->http.fd);
308#else
309 close(con->http.fd);
310#endif /* WIN32 */
311
312 cupsdLogMessage(CUPSD_LOG_WARN,
313 "IP lookup failed - connection from %s closed!",
314 con->http.hostname);
bd7854cb 315 free(con);
ef416fc2 316 return;
317 }
318 }
319
320#ifdef AF_INET6
321 if (con->http.hostaddr->addr.sa_family == AF_INET6)
322 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv6)",
323 con->http.fd, con->http.hostname,
324 ntohs(con->http.hostaddr->ipv6.sin6_port));
325 else
326#endif /* AF_INET6 */
327#ifdef AF_LOCAL
328 if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
329 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s (Domain)",
330 con->http.fd, con->http.hostname);
331 else
332#endif /* AF_LOCAL */
333 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv4)",
334 con->http.fd, con->http.hostname,
335 ntohs(con->http.hostaddr->ipv4.sin_port));
336
337 /*
338 * Get the local address the client connected to...
339 */
340
341 addrlen = sizeof(temp);
342 if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
343 {
344 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
345 strerror(errno));
346
347 strcpy(con->servername, "localhost");
348 con->serverport = LocalPort;
349 }
350 else
351 {
352#ifdef AF_INET6
353 if (temp.addr.sa_family == AF_INET6)
354 {
355 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
356 con->serverport = ntohs(lis->address.ipv6.sin6_port);
357 }
358 else
359#endif /* AF_INET6 */
360 if (temp.addr.sa_family == AF_INET)
361 {
362 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
363 con->serverport = ntohs(lis->address.ipv4.sin_port);
364 }
365 else
366 {
367 strcpy(con->servername, "localhost");
368 con->serverport = LocalPort;
369 }
370 }
371
bd7854cb 372 cupsArrayAdd(Clients, con);
373
ef416fc2 374 cupsdLogMessage(CUPSD_LOG_DEBUG2,
375 "cupsdAcceptClient: %d connected to server on %s:%d",
376 con->http.fd, con->servername, con->serverport);
377
378 /*
379 * Using TCP_NODELAY improves responsiveness, especially on systems
380 * with a slow loopback interface... Since we write large buffers
381 * when sending print files and requests, there shouldn't be any
382 * performance penalty for this...
383 */
384
385 val = 1;
386 setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
387
388 /*
389 * Close this file on all execs...
390 */
391
392 fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
393
394 /*
395 * Add the socket to the select() input mask.
396 */
397
398 cupsdLogMessage(CUPSD_LOG_DEBUG2,
399 "cupsdAcceptClient: Adding fd %d to InputSet...",
400 con->http.fd);
401 FD_SET(con->http.fd, InputSet);
402
ef416fc2 403 /*
404 * Temporarily suspend accept()'s until we lose a client...
405 */
406
bd7854cb 407 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 408 cupsdPauseListening();
409
410#ifdef HAVE_SSL
411 /*
412 * See if we are connecting on a secure port...
413 */
414
415 if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
416 {
417 /*
418 * https connection; go secure...
419 */
420
421 con->http.encryption = HTTP_ENCRYPT_ALWAYS;
422
e1d6a774 423 encrypt_client(con);
ef416fc2 424 }
425 else
426 con->auto_ssl = 1;
427#endif /* HAVE_SSL */
428}
429
430
431/*
432 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
433 */
434
435void
436cupsdCloseAllClients(void)
437{
bd7854cb 438 cupsd_client_t *con; /* Current client */
439
440
441 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
442 con;
443 con = (cupsd_client_t *)cupsArrayNext(Clients))
444 cupsdCloseClient(con);
ef416fc2 445}
446
447
448/*
449 * 'cupsdCloseClient()' - Close a remote client.
450 */
451
452int /* O - 1 if partial close, 0 if fully closed */
453cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
454{
455 int partial; /* Do partial close for SSL? */
456#ifdef HAVE_LIBSSL
457 SSL_CTX *context; /* Context for encryption */
458 SSL *conn; /* Connection for encryption */
459 unsigned long error; /* Error code */
460#elif defined(HAVE_GNUTLS)
89d46774 461 http_tls_t *conn; /* TLS connection information */
462 int error; /* Error code */
ef416fc2 463 gnutls_certificate_server_credentials *credentials;
464 /* TLS credentials */
89d46774 465# elif defined(HAVE_CDSASSL)
466 http_tls_t *conn; /* CDSA connection information */
ef416fc2 467#endif /* HAVE_LIBSSL */
468
469
470 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdCloseClient: %d", con->http.fd);
471
472 /*
473 * Flush pending writes before closing...
474 */
475
476 httpFlushWrite(HTTP(con));
477
478 partial = 0;
479
480#ifdef HAVE_SSL
481 /*
482 * Shutdown encryption as needed...
483 */
484
485 if (con->http.tls)
486 {
487 partial = 1;
488
489# ifdef HAVE_LIBSSL
490 conn = (SSL *)(con->http.tls);
491 context = SSL_get_SSL_CTX(conn);
492
493 switch (SSL_shutdown(conn))
494 {
495 case 1 :
496 cupsdLogMessage(CUPSD_LOG_INFO,
497 "cupsdCloseClient: SSL shutdown successful!");
498 break;
499 case -1 :
500 cupsdLogMessage(CUPSD_LOG_ERROR,
501 "cupsdCloseClient: Fatal error during SSL shutdown!");
502 default :
503 while ((error = ERR_get_error()) != 0)
504 cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdCloseClient: %s",
505 ERR_error_string(error, NULL));
506 break;
507 }
508
509 SSL_CTX_free(context);
510 SSL_free(conn);
511
512# elif defined(HAVE_GNUTLS)
513 conn = (http_tls_t *)(con->http.tls);
514 credentials = (gnutls_certificate_server_credentials *)(conn->credentials);
515
516 error = gnutls_bye(conn->session, GNUTLS_SHUT_WR);
517 switch (error)
518 {
519 case GNUTLS_E_SUCCESS:
520 cupsdLogMessage(CUPSD_LOG_INFO,
521 "cupsdCloseClient: SSL shutdown successful!");
522 break;
523 default:
524 cupsdLogMessage(CUPSD_LOG_ERROR,
525 "cupsdCloseClient: %s", gnutls_strerror(error));
526 break;
527 }
528
529 gnutls_deinit(conn->session);
530 gnutls_certificate_free_credentials(*credentials);
531 free(credentials);
532 free(conn);
533
534# elif defined(HAVE_CDSASSL)
89d46774 535 conn = (http_tls_t *)(con->http.tls);
536
537 while (SSLClose(conn->session) == errSSLWouldBlock)
b423cd4c 538 usleep(1000);
539
89d46774 540 SSLDisposeContext(conn->session);
541
542 if (conn->certsArray)
543 CFRelease(conn->certsArray);
544
545 free(conn);
ef416fc2 546# endif /* HAVE_LIBSSL */
547
548 con->http.tls = NULL;
549 }
550#endif /* HAVE_SSL */
551
552 if (con->pipe_pid != 0)
553 {
554 /*
555 * Stop any CGI process...
556 */
557
558 cupsdLogMessage(CUPSD_LOG_DEBUG2,
559 "cupsdCloseClient: %d Killing process ID %d...",
560 con->http.fd, con->pipe_pid);
561 cupsdEndProcess(con->pipe_pid, 1);
562 con->pipe_pid = 0;
563 }
564
565 if (con->file >= 0)
566 {
567 if (FD_ISSET(con->file, InputSet))
568 {
569 cupsdLogMessage(CUPSD_LOG_DEBUG2,
570 "cupsdCloseClient: %d Removing fd %d from InputSet...",
571 con->http.fd, con->file);
572 FD_CLR(con->file, InputSet);
573 }
574
575 cupsdLogMessage(CUPSD_LOG_DEBUG2,
576 "cupsdCloseClient: %d Closing data file %d.",
577 con->http.fd, con->file);
578
579 close(con->file);
580 con->file = -1;
581 }
582
583 /*
584 * Close the socket and clear the file from the input set for select()...
585 */
586
587 if (con->http.fd > 0)
588 {
589 if (partial)
590 {
591 /*
592 * Only do a partial close so that the encrypted client gets everything.
593 */
594
595 cupsdLogMessage(CUPSD_LOG_DEBUG2,
596 "cupsdCloseClient: Removing fd %d from OutputSet...",
597 con->http.fd);
598 shutdown(con->http.fd, 0);
599 FD_CLR(con->http.fd, OutputSet);
600 }
601 else
602 {
603 /*
604 * Shut the socket down fully...
605 */
606
607 cupsdLogMessage(CUPSD_LOG_DEBUG2,
608 "cupsdCloseClient: Removing fd %d from InputSet and OutputSet...",
609 con->http.fd);
610 close(con->http.fd);
611 FD_CLR(con->http.fd, InputSet);
612 FD_CLR(con->http.fd, OutputSet);
613 con->http.fd = -1;
614 }
615 }
616
617 if (!partial)
618 {
619 /*
620 * Free memory...
621 */
622
623 if (con->http.input_set)
624 free(con->http.input_set);
625
626 httpClearCookie(HTTP(con));
627
628 cupsdClearString(&con->filename);
629 cupsdClearString(&con->command);
630 cupsdClearString(&con->options);
631
632 if (con->request)
633 {
634 ippDelete(con->request);
635 con->request = NULL;
636 }
637
638 if (con->response)
639 {
640 ippDelete(con->response);
641 con->response = NULL;
642 }
643
644 if (con->language)
645 {
646 cupsLangFree(con->language);
647 con->language = NULL;
648 }
649
650 /*
651 * Re-enable new client connections if we are going back under the
652 * limit...
653 */
654
bd7854cb 655 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 656 cupsdResumeListening();
657
658 /*
659 * Compact the list of clients as necessary...
660 */
661
bd7854cb 662 cupsArrayRemove(Clients, con);
ef416fc2 663
bd7854cb 664 free(con);
ef416fc2 665 }
666
667 return (partial);
668}
669
670
ef416fc2 671/*
672 * 'cupsdReadClient()' - Read data from a client.
673 */
674
675int /* O - 1 on success, 0 on error */
676cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
677{
678 char line[32768], /* Line from client... */
679 operation[64], /* Operation code from socket */
680 version[64], /* HTTP version number string */
681 locale[64], /* Locale */
682 *ptr; /* Pointer into strings */
683 int major, minor; /* HTTP version numbers */
684 http_status_t status; /* Transfer status */
685 ipp_state_t ipp_state; /* State of IPP transfer */
686 int bytes; /* Number of bytes to POST */
687 char *filename; /* Name of file for GET/HEAD */
688 char buf[1024]; /* Buffer for real filename */
689 struct stat filestats; /* File information */
690 mime_type_t *type; /* MIME type of file */
691 cupsd_printer_t *p; /* Printer */
692 static unsigned request_id = 0; /* Request ID for temp files */
693
694
695 status = HTTP_CONTINUE;
696
697 cupsdLogMessage(CUPSD_LOG_DEBUG2,
698 "cupsdReadClient: %d, used=%d, file=%d state=%d",
699 con->http.fd, con->http.used, con->file, con->http.state);
700
701 if (con->http.error)
702 {
703 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: http error seen...");
704 return (cupsdCloseClient(con));
705 }
706
707#ifdef HAVE_SSL
708 if (con->auto_ssl)
709 {
710 /*
711 * Automatically check for a SSL/TLS handshake...
712 */
713
714 con->auto_ssl = 0;
715
716 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
717 (!buf[0] || !strchr("DGHOPT", buf[0])))
718 {
719 /*
720 * Encrypt this connection...
721 */
722
723 cupsdLogMessage(CUPSD_LOG_DEBUG2,
724 "cupsdReadClient: Saw first byte %02X, auto-negotiating SSL/TLS session...",
725 buf[0] & 255);
726
e1d6a774 727 encrypt_client(con);
ef416fc2 728 return (1);
729 }
730 }
731#endif /* HAVE_SSL */
732
733 switch (con->http.state)
734 {
735 case HTTP_WAITING :
736 /*
737 * See if we've received a request line...
738 */
739
740 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
741 {
742 cupsdLogMessage(CUPSD_LOG_DEBUG2,
743 "cupsdReadClient: httpGets returned EOF...");
744 return (cupsdCloseClient(con));
745 }
746
747 /*
748 * Ignore blank request lines...
749 */
750
751 if (line[0] == '\0')
752 break;
753
754 /*
755 * Clear other state variables...
756 */
757
758 httpClearFields(HTTP(con));
759
760 con->http.activity = time(NULL);
761 con->http.version = HTTP_1_0;
762 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
763 con->http.data_encoding = HTTP_ENCODE_LENGTH;
764 con->http.data_remaining = 0;
765 con->http._data_remaining = 0;
766 con->operation = HTTP_WAITING;
767 con->bytes = 0;
768 con->file = -1;
769 con->file_ready = 0;
770 con->pipe_pid = 0;
771 con->username[0] = '\0';
772 con->password[0] = '\0';
773 con->uri[0] = '\0';
774
775 cupsdClearString(&con->command);
776 cupsdClearString(&con->options);
777
778 if (con->language != NULL)
779 {
780 cupsLangFree(con->language);
781 con->language = NULL;
782 }
783
784 /*
785 * Grab the request line...
786 */
787
788 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
789 {
790 case 1 :
791 cupsdLogMessage(CUPSD_LOG_ERROR,
792 "Bad request line \"%s\" from %s!", line,
793 con->http.hostname);
794 cupsdSendError(con, HTTP_BAD_REQUEST);
795 return (cupsdCloseClient(con));
796 case 2 :
797 con->http.version = HTTP_0_9;
798 break;
799 case 3 :
800 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
801 {
802 cupsdLogMessage(CUPSD_LOG_ERROR,
803 "Bad request line \"%s\" from %s!", line,
804 con->http.hostname);
805 cupsdSendError(con, HTTP_BAD_REQUEST);
806 return (cupsdCloseClient(con));
807 }
808
809 if (major < 2)
810 {
811 con->http.version = (http_version_t)(major * 100 + minor);
812 if (con->http.version == HTTP_1_1 && KeepAlive)
813 con->http.keep_alive = HTTP_KEEPALIVE_ON;
814 else
815 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
816 }
817 else
818 {
819 cupsdSendError(con, HTTP_NOT_SUPPORTED);
820 return (cupsdCloseClient(con));
821 }
822 break;
823 }
824
825 /*
826 * Handle full URLs in the request line...
827 */
828
829 if (strcmp(con->uri, "*"))
830 {
831 char method[HTTP_MAX_URI], /* Method/scheme */
832 userpass[HTTP_MAX_URI], /* Username:password */
833 hostname[HTTP_MAX_URI], /* Hostname */
834 resource[HTTP_MAX_URI]; /* Resource path */
835 int port; /* Port number */
836
837
838 /*
839 * Separate the URI into its components...
840 */
841
a4d04587 842 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
843 method, sizeof(method),
ef416fc2 844 userpass, sizeof(userpass),
845 hostname, sizeof(hostname), &port,
846 resource, sizeof(resource));
847
848 /*
849 * Only allow URIs with the servername, localhost, or an IP
850 * address...
851 */
852
853 if (strcmp(method, "file") &&
854 strcasecmp(hostname, ServerName) &&
855 strcasecmp(hostname, "localhost") &&
856 !isdigit(hostname[0]))
857 {
858 /*
859 * Nope, we don't do proxies...
860 */
861
862 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad URI \"%s\" in request!",
863 con->uri);
864 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED);
865 return (cupsdCloseClient(con));
866 }
867
868 /*
869 * Copy the resource portion back into the URI; both resource and
870 * con->uri are HTTP_MAX_URI bytes in size...
871 */
872
873 strcpy(con->uri, resource);
874 }
875
876 /*
877 * Process the request...
878 */
879
880 if (!strcmp(operation, "GET"))
881 con->http.state = HTTP_GET;
882 else if (!strcmp(operation, "PUT"))
883 con->http.state = HTTP_PUT;
884 else if (!strcmp(operation, "POST"))
885 con->http.state = HTTP_POST;
886 else if (!strcmp(operation, "DELETE"))
887 con->http.state = HTTP_DELETE;
888 else if (!strcmp(operation, "TRACE"))
889 con->http.state = HTTP_TRACE;
890 else if (!strcmp(operation, "OPTIONS"))
891 con->http.state = HTTP_OPTIONS;
892 else if (!strcmp(operation, "HEAD"))
893 con->http.state = HTTP_HEAD;
894 else
895 {
896 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad operation \"%s\"!", operation);
897 cupsdSendError(con, HTTP_BAD_REQUEST);
898 return (cupsdCloseClient(con));
899 }
900
901 con->start = time(NULL);
902 con->operation = con->http.state;
903
89d46774 904 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %s %s HTTP/%d.%d",
905 con->http.fd, operation, con->uri,
ef416fc2 906 con->http.version / 100, con->http.version % 100);
907
908 con->http.status = HTTP_OK;
909
910 case HTTP_OPTIONS :
911 case HTTP_DELETE :
912 case HTTP_GET :
913 case HTTP_HEAD :
914 case HTTP_POST :
915 case HTTP_PUT :
916 case HTTP_TRACE :
917 /*
918 * Parse incoming parameters until the status changes...
919 */
920
921 status = httpUpdate(HTTP(con));
922
923 if (status != HTTP_OK && status != HTTP_CONTINUE)
924 {
925 cupsdSendError(con, HTTP_BAD_REQUEST);
926 return (cupsdCloseClient(con));
927 }
928 break;
929
930 default :
931 break; /* Anti-compiler-warning-code */
932 }
933
934 /*
935 * Handle new transfers...
936 */
937
938 if (status == HTTP_OK)
939 {
940 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
941 {
942 /*
943 * Figure out the locale from the Accept-Language and Content-Type
944 * fields...
945 */
946
947 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ',')) != NULL)
948 *ptr = '\0';
949
950 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ';')) != NULL)
951 *ptr = '\0';
952
953 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE], "charset=")) != NULL)
954 {
955 /*
956 * Combine language and charset, and trim any extra params in the
957 * content-type.
958 */
959
960 snprintf(locale, sizeof(locale), "%s.%s",
961 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
962
963 if ((ptr = strchr(locale, ',')) != NULL)
964 *ptr = '\0';
965 }
966 else
967 snprintf(locale, sizeof(locale), "%s.%s",
968 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], DefaultCharset);
d6ae789d 969
89d46774 970 cupsdLogMessage(CUPSD_LOG_DEBUG,
971 "cupsdReadClient: %d Browser asked for language \"%s\"...",
972 con->http.fd, locale);
973
ef416fc2 974 con->language = cupsLangGet(locale);
975 }
976 else
977 con->language = cupsLangGet(DefaultLocale);
978
979 cupsdAuthorize(con);
980
981 if (!strncmp(con->http.fields[HTTP_FIELD_CONNECTION], "Keep-Alive", 10) &&
982 KeepAlive)
983 con->http.keep_alive = HTTP_KEEPALIVE_ON;
984
985 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
986 con->http.version >= HTTP_1_1)
987 {
988 /*
989 * HTTP/1.1 and higher require the "Host:" field...
990 */
991
992 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
993 return (cupsdCloseClient(con));
994 }
995 else if (con->operation == HTTP_OPTIONS)
996 {
997 /*
998 * Do OPTIONS command...
999 */
1000
1001 if (con->best && con->best->type != AUTH_NONE)
1002 {
1003 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL))
1004 return (cupsdCloseClient(con));
1005 }
1006
1007 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1008 con->http.tls == NULL)
1009 {
1010#ifdef HAVE_SSL
1011 /*
1012 * Do encryption stuff...
1013 */
1014
1015 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1016 return (cupsdCloseClient(con));
1017
1018 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1019 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1020 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1021 httpPrintf(HTTP(con), "\r\n");
1022
e1d6a774 1023 encrypt_client(con);
ef416fc2 1024#else
1025 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1026 return (cupsdCloseClient(con));
1027#endif /* HAVE_SSL */
1028 }
1029
ef416fc2 1030 if (!cupsdSendHeader(con, HTTP_OK, NULL))
1031 return (cupsdCloseClient(con));
1032
1033 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1034 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1035 httpPrintf(HTTP(con), "\r\n");
1036 }
1037 else if (!is_path_absolute(con->uri))
1038 {
1039 /*
1040 * Protect against malicious users!
1041 */
1042
1043 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1044 return (cupsdCloseClient(con));
1045 }
1046 else
1047 {
1048 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1049 con->http.tls == NULL)
1050 {
1051#ifdef HAVE_SSL
1052 /*
1053 * Do encryption stuff...
1054 */
1055
1056 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1057 return (cupsdCloseClient(con));
1058
1059 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1060 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1061 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1062 httpPrintf(HTTP(con), "\r\n");
1063
e1d6a774 1064 encrypt_client(con);
ef416fc2 1065#else
1066 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1067 return (cupsdCloseClient(con));
1068#endif /* HAVE_SSL */
1069 }
1070
1071 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1072 {
1073 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1074 "cupsdReadClient: Unauthorized request for %s...\n",
1075 con->uri);
1076 cupsdSendError(con, status);
1077 return (cupsdCloseClient(con));
1078 }
1079
b423cd4c 1080 if (con->http.expect &&
1081 (con->operation == HTTP_POST || con->operation == HTTP_PUT))
ef416fc2 1082 {
b423cd4c 1083 if (con->http.expect == HTTP_CONTINUE)
1084 {
1085 /*
1086 * Send 100-continue header...
1087 */
1088
1089 if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL))
1090 return (cupsdCloseClient(con));
1091 }
1092 else
1093 {
1094 /*
1095 * Send 417-expectation-failed header...
1096 */
1097
1098 if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL))
1099 return (cupsdCloseClient(con));
1100
1101 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1102 httpPrintf(HTTP(con), "\r\n");
1103 }
ef416fc2 1104 }
1105
1106 switch (con->http.state)
1107 {
1108 case HTTP_GET_SEND :
1109 if (!strncmp(con->uri, "/printers/", 10) &&
1110 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1111 {
1112 /*
1113 * Send PPD file - get the real printer name since printer
1114 * names are not case sensitive but filenames can be...
1115 */
1116
1117 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1118
1119 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1120 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1121 else
1122 {
1123 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1124 return (cupsdCloseClient(con));
1125
1126 break;
1127 }
1128 }
1129
1130 if ((!strncmp(con->uri, "/admin", 6) &&
1131 strncmp(con->uri, "/admin/conf/", 12) &&
1132 strncmp(con->uri, "/admin/log/", 11)) ||
1133 !strncmp(con->uri, "/printers", 9) ||
1134 !strncmp(con->uri, "/classes", 8) ||
1135 !strncmp(con->uri, "/help", 5) ||
1136 !strncmp(con->uri, "/jobs", 5))
1137 {
1138 /*
1139 * Send CGI output...
1140 */
1141
1142 if (!strncmp(con->uri, "/admin", 6))
1143 {
1144 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1145 ServerBin);
1146
b423cd4c 1147 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1148 }
1149 else if (!strncmp(con->uri, "/printers", 9))
1150 {
1151 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1152 ServerBin);
b423cd4c 1153
1154 if (con->uri[9] && con->uri[10])
1155 cupsdSetString(&con->options, con->uri + 9);
1156 else
1157 cupsdSetString(&con->options, NULL);
ef416fc2 1158 }
1159 else if (!strncmp(con->uri, "/classes", 8))
1160 {
1161 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1162 ServerBin);
b423cd4c 1163
1164 if (con->uri[8] && con->uri[9])
1165 cupsdSetString(&con->options, con->uri + 8);
1166 else
1167 cupsdSetString(&con->options, NULL);
ef416fc2 1168 }
1169 else if (!strncmp(con->uri, "/jobs", 5))
1170 {
1171 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1172 ServerBin);
b423cd4c 1173
1174 if (con->uri[5] && con->uri[6])
1175 cupsdSetString(&con->options, con->uri + 5);
1176 else
1177 cupsdSetString(&con->options, NULL);
ef416fc2 1178 }
1179 else
1180 {
1181 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1182 ServerBin);
ef416fc2 1183
b423cd4c 1184 if (con->uri[5] && con->uri[6])
1185 cupsdSetString(&con->options, con->uri + 5);
1186 else
1187 cupsdSetString(&con->options, NULL);
1188 }
ef416fc2 1189
1190 if (!cupsdSendCommand(con, con->command, con->options, 0))
1191 {
1192 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1193 return (cupsdCloseClient(con));
1194 }
1195 else
1196 cupsdLogRequest(con, HTTP_OK);
1197
1198 if (con->http.version <= HTTP_1_0)
1199 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1200 }
1201 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1202 (strchr(con->uri + 12, '/') ||
1203 strlen(con->uri) == 12)) ||
1204 (!strncmp(con->uri, "/admin/log/", 11) &&
1205 (strchr(con->uri + 11, '/') ||
1206 strlen(con->uri) == 11)))
1207 {
1208 /*
1209 * GET can only be done to configuration files under
1210 * /admin/conf...
1211 */
1212
1213 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1214 return (cupsdCloseClient(con));
1215
1216 break;
1217 }
1218 else
1219 {
1220 /*
1221 * Serve a file...
1222 */
1223
1224 if ((filename = get_file(con, &filestats, buf,
1225 sizeof(buf))) == NULL)
1226 {
1227 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1228 return (cupsdCloseClient(con));
1229
1230 break;
1231 }
1232
4400e98d 1233 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1234
e1d6a774 1235 if (is_cgi(con, filename, &filestats, type))
ef416fc2 1236 {
1237 /*
1238 * Note: con->command and con->options were set by
e1d6a774 1239 * is_cgi()...
ef416fc2 1240 */
1241
1242 if (!cupsdSendCommand(con, con->command, con->options, 0))
1243 {
1244 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1245 return (cupsdCloseClient(con));
1246 }
1247 else
1248 cupsdLogRequest(con, HTTP_OK);
1249
1250 if (con->http.version <= HTTP_1_0)
1251 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1252 break;
1253 }
1254
1255 if (!check_if_modified(con, &filestats))
1256 {
1257 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1258 return (cupsdCloseClient(con));
1259 }
1260 else
1261 {
1262 if (type == NULL)
1263 strcpy(line, "text/plain");
1264 else
1265 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1266
e1d6a774 1267 if (!send_file(con, HTTP_OK, filename, line, &filestats))
ef416fc2 1268 return (cupsdCloseClient(con));
1269 }
1270 }
1271 break;
1272
1273 case HTTP_POST_RECV :
1274 /*
1275 * See if the POST request includes a Content-Length field, and if
1276 * so check the length against any limits that are set...
1277 */
1278
1279 cupsdLogMessage(CUPSD_LOG_DEBUG2, "POST %s", con->uri);
1280 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1281 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1282
1283 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1284 MaxRequestSize > 0 &&
1285 con->http.data_remaining > MaxRequestSize)
1286 {
1287 /*
1288 * Request too large...
1289 */
1290
1291 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1292 return (cupsdCloseClient(con));
1293
1294 break;
1295 }
1296 else if (con->http.data_remaining < 0)
1297 {
1298 /*
1299 * Negative content lengths are invalid!
1300 */
1301
1302 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1303 return (cupsdCloseClient(con));
1304
1305 break;
1306 }
1307
1308 /*
1309 * See what kind of POST request this is; for IPP requests the
1310 * content-type field will be "application/ipp"...
1311 */
1312
1313 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1314 "application/ipp"))
1315 con->request = ippNew();
1316 else if ((!strncmp(con->uri, "/admin", 6) &&
1317 strncmp(con->uri, "/admin/conf/", 12) &&
1318 strncmp(con->uri, "/admin/log/", 11)) ||
1319 !strncmp(con->uri, "/printers", 9) ||
1320 !strncmp(con->uri, "/classes", 8) ||
1321 !strncmp(con->uri, "/help", 5) ||
1322 !strncmp(con->uri, "/jobs", 5))
1323 {
1324 /*
1325 * CGI request...
1326 */
1327
1328 if (!strncmp(con->uri, "/admin", 6))
1329 {
1330 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1331 ServerBin);
1332
b423cd4c 1333 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1334 }
1335 else if (!strncmp(con->uri, "/printers", 9))
1336 {
1337 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1338 ServerBin);
b423cd4c 1339
1340 if (con->uri[9] && con->uri[10])
1341 cupsdSetString(&con->options, con->uri + 9);
1342 else
1343 cupsdSetString(&con->options, NULL);
ef416fc2 1344 }
1345 else if (!strncmp(con->uri, "/classes", 8))
1346 {
1347 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1348 ServerBin);
b423cd4c 1349
1350 if (con->uri[8] && con->uri[9])
1351 cupsdSetString(&con->options, con->uri + 8);
1352 else
1353 cupsdSetString(&con->options, NULL);
ef416fc2 1354 }
1355 else if (!strncmp(con->uri, "/jobs", 5))
1356 {
1357 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1358 ServerBin);
b423cd4c 1359
1360 if (con->uri[5] && con->uri[6])
1361 cupsdSetString(&con->options, con->uri + 5);
1362 else
1363 cupsdSetString(&con->options, NULL);
ef416fc2 1364 }
1365 else
1366 {
1367 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1368 ServerBin);
ef416fc2 1369
b423cd4c 1370 if (con->uri[5] && con->uri[6])
1371 cupsdSetString(&con->options, con->uri + 5);
1372 else
1373 cupsdSetString(&con->options, NULL);
1374 }
ef416fc2 1375
1376 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b423cd4c 1377 "cupsdReadClient: %d command=\"%s\", "
1378 "options = \"%s\"",
ef416fc2 1379 con->http.fd, con->command, con->options);
1380
1381 if (con->http.version <= HTTP_1_0)
1382 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1383 }
1384 else
1385 {
1386 /*
1387 * POST to a file...
1388 */
1389
1390 if ((filename = get_file(con, &filestats, buf,
1391 sizeof(buf))) == NULL)
1392 {
1393 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1394 return (cupsdCloseClient(con));
1395
1396 break;
1397 }
1398
4400e98d 1399 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1400
e1d6a774 1401 if (!is_cgi(con, filename, &filestats, type))
ef416fc2 1402 {
1403 /*
1404 * Only POST to CGI's...
1405 */
1406
1407 if (!cupsdSendError(con, HTTP_UNAUTHORIZED))
1408 return (cupsdCloseClient(con));
1409 }
1410 }
1411 break;
1412
1413 case HTTP_PUT_RECV :
1414 /*
1415 * Validate the resource name...
1416 */
1417
1418 if (strncmp(con->uri, "/admin/conf/", 12) ||
1419 strchr(con->uri + 12, '/') ||
1420 strlen(con->uri) == 12)
1421 {
1422 /*
1423 * PUT can only be done to configuration files under
1424 * /admin/conf...
1425 */
1426
1427 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1428 return (cupsdCloseClient(con));
1429
1430 break;
1431 }
1432
1433 /*
1434 * See if the PUT request includes a Content-Length field, and if
1435 * so check the length against any limits that are set...
1436 */
1437
1438 cupsdLogMessage(CUPSD_LOG_DEBUG2, "PUT %s", con->uri);
1439 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1440 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1441
1442 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1443 MaxRequestSize > 0 &&
1444 con->http.data_remaining > MaxRequestSize)
1445 {
1446 /*
1447 * Request too large...
1448 */
1449
1450 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1451 return (cupsdCloseClient(con));
1452
1453 break;
1454 }
1455 else if (con->http.data_remaining < 0)
1456 {
1457 /*
1458 * Negative content lengths are invalid!
1459 */
1460
1461 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1462 return (cupsdCloseClient(con));
1463
1464 break;
1465 }
1466
1467 /*
1468 * Open a temporary file to hold the request...
1469 */
1470
1471 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1472 request_id ++);
1473 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1474
1475 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1476 "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1477 con->filename, con->file);
1478
1479 if (con->file < 0)
1480 {
1481 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1482 return (cupsdCloseClient(con));
1483 }
1484
1485 fchmod(con->file, 0640);
1486 fchown(con->file, RunUser, Group);
1487 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1488 break;
1489
1490 case HTTP_DELETE :
1491 case HTTP_TRACE :
1492 cupsdSendError(con, HTTP_NOT_IMPLEMENTED);
1493 return (cupsdCloseClient(con));
1494
1495 case HTTP_HEAD :
1496 if (!strncmp(con->uri, "/printers/", 10) &&
1497 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1498 {
1499 /*
1500 * Send PPD file - get the real printer name since printer
1501 * names are not case sensitive but filenames can be...
1502 */
1503
1504 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1505
1506 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1507 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1508 else
1509 {
1510 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1511 return (cupsdCloseClient(con));
1512
1513 break;
1514 }
1515 }
1516
1517 if ((!strncmp(con->uri, "/admin", 6) &&
1518 strncmp(con->uri, "/admin/conf/", 12) &&
1519 strncmp(con->uri, "/admin/log/", 11)) ||
1520 !strncmp(con->uri, "/printers", 9) ||
1521 !strncmp(con->uri, "/classes", 8) ||
1522 !strncmp(con->uri, "/help", 5) ||
1523 !strncmp(con->uri, "/jobs", 5))
1524 {
1525 /*
1526 * CGI output...
1527 */
1528
1529 if (!cupsdSendHeader(con, HTTP_OK, "text/html"))
1530 return (cupsdCloseClient(con));
1531
1532 if (httpPrintf(HTTP(con), "\r\n") < 0)
1533 return (cupsdCloseClient(con));
1534
1535 cupsdLogRequest(con, HTTP_OK);
1536 }
1537 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1538 (strchr(con->uri + 12, '/') ||
1539 strlen(con->uri) == 12)) ||
1540 (!strncmp(con->uri, "/admin/log/", 11) &&
1541 (strchr(con->uri + 11, '/') ||
1542 strlen(con->uri) == 11)))
1543 {
1544 /*
1545 * HEAD can only be done to configuration files under
1546 * /admin/conf...
1547 */
1548
1549 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1550 return (cupsdCloseClient(con));
1551
1552 break;
1553 }
1554 else if ((filename = get_file(con, &filestats, buf,
1555 sizeof(buf))) == NULL)
1556 {
1557 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html"))
1558 return (cupsdCloseClient(con));
1559
1560 cupsdLogRequest(con, HTTP_NOT_FOUND);
1561 }
1562 else if (!check_if_modified(con, &filestats))
1563 {
1564 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1565 return (cupsdCloseClient(con));
1566
1567 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
1568 }
1569 else
1570 {
1571 /*
1572 * Serve a file...
1573 */
1574
4400e98d 1575 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1576 if (type == NULL)
1577 strcpy(line, "text/plain");
1578 else
1579 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1580
1581 if (!cupsdSendHeader(con, HTTP_OK, line))
1582 return (cupsdCloseClient(con));
1583
1584 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
1585 httpGetDateString(filestats.st_mtime)) < 0)
1586 return (cupsdCloseClient(con));
1587
1588 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
1589 (unsigned long)filestats.st_size) < 0)
1590 return (cupsdCloseClient(con));
1591
1592 cupsdLogRequest(con, HTTP_OK);
1593 }
1594
1595 if (httpPrintf(HTTP(con), "\r\n") < 0)
1596 return (cupsdCloseClient(con));
1597
1598 con->http.state = HTTP_WAITING;
1599 break;
1600
1601 default :
1602 break; /* Anti-compiler-warning-code */
1603 }
1604 }
1605 }
1606
1607 /*
1608 * Handle any incoming data...
1609 */
1610
1611 switch (con->http.state)
1612 {
1613 case HTTP_PUT_RECV :
1614 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1615 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_%s, "
1616 "con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1617 con->http.fd,
1618 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1619 "CHUNKED" : "LENGTH",
1620 CUPS_LLCAST con->http.data_remaining, con->file);
1621
a4d04587 1622 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
ef416fc2 1623 return (cupsdCloseClient(con));
1624 else if (bytes > 0)
1625 {
1626 con->bytes += bytes;
1627
1628 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1629 "cupsdReadClient: %d writing %d bytes to %d",
1630 con->http.fd, bytes, con->file);
1631
1632 if (write(con->file, line, bytes) < bytes)
1633 {
1634 cupsdLogMessage(CUPSD_LOG_ERROR,
1635 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1636 bytes, con->filename, strerror(errno));
1637
1638 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1639 "cupsdReadClient: Closing data file %d...",
1640 con->file);
1641
1642 close(con->file);
1643 con->file = -1;
1644 unlink(con->filename);
1645 cupsdClearString(&con->filename);
1646
1647 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1648 return (cupsdCloseClient(con));
1649 }
1650 }
1651
1652 if (con->http.state == HTTP_WAITING)
1653 {
1654 /*
1655 * End of file, see how big it is...
1656 */
1657
1658 fstat(con->file, &filestats);
1659
1660 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1661 "cupsdReadClient: %d Closing data file %d, size="
1662 CUPS_LLFMT ".",
1663 con->http.fd, con->file,
1664 CUPS_LLCAST filestats.st_size);
1665
1666 close(con->file);
1667 con->file = -1;
1668
1669 if (filestats.st_size > MaxRequestSize &&
1670 MaxRequestSize > 0)
1671 {
1672 /*
1673 * Request is too big; remove it and send an error...
1674 */
1675
1676 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1677 "cupsdReadClient: %d Removing temp file %s",
1678 con->http.fd, con->filename);
1679 unlink(con->filename);
1680 cupsdClearString(&con->filename);
1681
1682 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1683 return (cupsdCloseClient(con));
1684 }
1685
1686 /*
1687 * Install the configuration file...
1688 */
1689
1690 status = install_conf_file(con);
1691
1692 /*
1693 * Return the status to the client...
1694 */
1695
1696 if (!cupsdSendError(con, status))
1697 return (cupsdCloseClient(con));
1698 }
1699 break;
1700
1701 case HTTP_POST_RECV :
1702 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1703 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_"
1704 "%s, con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1705 con->http.fd,
1706 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1707 "CHUNKED" : "LENGTH",
1708 CUPS_LLCAST con->http.data_remaining, con->file);
1709
1710 if (con->request != NULL)
1711 {
1712 /*
1713 * Grab any request data from the connection...
1714 */
1715
1716 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
1717 {
1718 cupsdLogMessage(CUPSD_LOG_ERROR,
1719 "cupsdReadClient: %d IPP Read Error!",
1720 con->http.fd);
1721
1722 cupsdSendError(con, HTTP_BAD_REQUEST);
1723 return (cupsdCloseClient(con));
1724 }
1725 else if (ipp_state != IPP_DATA)
1726 {
1727 if (con->http.state == HTTP_POST_SEND)
1728 {
1729 cupsdSendError(con, HTTP_BAD_REQUEST);
1730 return (cupsdCloseClient(con));
1731 }
1732
1733 break;
1734 }
1735 else
1736 con->bytes += ippLength(con->request);
1737 }
1738
1739 if (con->file < 0 && con->http.state != HTTP_POST_SEND)
1740 {
1741 /*
1742 * Create a file as needed for the request data...
1743 */
1744
1745 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
1746 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1747
1748 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1749 con->filename, con->file);
1750
1751 if (con->file < 0)
1752 {
1753 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1754 return (cupsdCloseClient(con));
1755 }
1756
1757 fchmod(con->file, 0640);
1758 fchown(con->file, RunUser, Group);
1759 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1760 }
1761
1762 if (con->http.state != HTTP_POST_SEND)
1763 {
a4d04587 1764 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
ef416fc2 1765 return (cupsdCloseClient(con));
1766 else if (bytes > 0)
1767 {
1768 con->bytes += bytes;
1769
1770 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1771 "cupsdReadClient: %d writing %d bytes to %d",
1772 con->http.fd, bytes, con->file);
1773
1774 if (write(con->file, line, bytes) < bytes)
1775 {
1776 cupsdLogMessage(CUPSD_LOG_ERROR,
1777 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1778 bytes, con->filename, strerror(errno));
1779
1780 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1781 "cupsdReadClient: Closing file %d...",
1782 con->file);
1783
1784 close(con->file);
1785 con->file = -1;
1786 unlink(con->filename);
1787 cupsdClearString(&con->filename);
1788
1789 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1790 return (cupsdCloseClient(con));
1791 }
1792 }
1793 else if (con->http.state == HTTP_POST_RECV)
1794 return (1); /* ??? */
1795 else if (con->http.state != HTTP_POST_SEND)
1796 return (cupsdCloseClient(con));
1797 }
1798
1799 if (con->http.state == HTTP_POST_SEND)
1800 {
1801 if (con->file >= 0)
1802 {
1803 fstat(con->file, &filestats);
1804
1805 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1806 "cupsdReadClient: %d Closing data file %d, "
1807 "size=" CUPS_LLFMT ".",
1808 con->http.fd, con->file,
1809 CUPS_LLCAST filestats.st_size);
1810
1811 close(con->file);
1812 con->file = -1;
1813
1814 if (filestats.st_size > MaxRequestSize &&
1815 MaxRequestSize > 0)
1816 {
1817 /*
1818 * Request is too big; remove it and send an error...
1819 */
1820
1821 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1822 "cupsdReadClient: %d Removing temp file %s",
1823 con->http.fd, con->filename);
1824 unlink(con->filename);
1825 cupsdClearString(&con->filename);
1826
1827 if (con->request)
1828 {
1829 /*
1830 * Delete any IPP request data...
1831 */
1832
1833 ippDelete(con->request);
1834 con->request = NULL;
1835 }
1836
1837 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1838 return (cupsdCloseClient(con));
1839 }
1840
1841 if (con->command)
1842 {
1843 if (!cupsdSendCommand(con, con->command, con->options, 0))
1844 {
1845 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1846 return (cupsdCloseClient(con));
1847 }
1848 else
1849 cupsdLogRequest(con, HTTP_OK);
1850 }
1851 }
1852
1853 if (con->request)
1854 return (cupsdProcessIPPRequest(con));
1855 }
1856 break;
1857
1858 default :
1859 break; /* Anti-compiler-warning-code */
1860 }
1861
1862 if (!con->http.keep_alive && con->http.state == HTTP_WAITING)
1863 return (cupsdCloseClient(con));
1864 else
1865 return (1);
1866}
1867
1868
1869/*
1870 * 'cupsdSendCommand()' - Send output from a command via HTTP.
1871 */
1872
1873int /* O - 1 on success, 0 on failure */
1874cupsdSendCommand(
1875 cupsd_client_t *con, /* I - Client connection */
1876 char *command, /* I - Command to run */
1877 char *options, /* I - Command-line options */
1878 int root) /* I - Run as root? */
1879{
1880 int fd; /* Standard input file descriptor */
1881
1882
1883 if (con->filename)
1884 fd = open(con->filename, O_RDONLY);
1885 else
1886 fd = open("/dev/null", O_RDONLY);
1887
1888 if (fd < 0)
1889 {
1890 cupsdLogMessage(CUPSD_LOG_ERROR,
1891 "cupsdSendCommand: %d Unable to open \"%s\" for reading: %s",
1892 con->http.fd, con->filename ? con->filename : "/dev/null",
1893 strerror(errno));
1894 return (0);
1895 }
1896
1897 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
1898
1899 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
1900
1901 close(fd);
1902
1903 cupsdLogMessage(CUPSD_LOG_INFO, "Started \"%s\" (pid=%d)", command,
1904 con->pipe_pid);
1905
1906 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendCommand: %d file=%d",
1907 con->http.fd, con->file);
1908
1909 if (con->pipe_pid == 0)
1910 return (0);
1911
1912 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1913
1914 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1915 "cupsdSendCommand: Adding fd %d to InputSet...", con->file);
1916 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1917 "cupsdSendCommand: Adding fd %d to OutputSet...",
1918 con->http.fd);
1919
1920 FD_SET(con->file, InputSet);
1921 FD_SET(con->http.fd, OutputSet);
1922
1923 con->sent_header = 0;
1924 con->file_ready = 0;
1925 con->got_fields = 0;
1926 con->field_col = 0;
1927
1928 return (1);
1929}
1930
1931
1932/*
1933 * 'cupsdSendError()' - Send an error message via HTTP.
1934 */
1935
1936int /* O - 1 if successful, 0 otherwise */
1937cupsdSendError(cupsd_client_t *con, /* I - Connection */
1938 http_status_t code) /* I - Error code */
1939{
4744bd90 1940#ifdef HAVE_SSL
1941 /*
1942 * Force client to upgrade for authentication if that is how the
1943 * server is configured...
1944 */
1945
1946 if (code == HTTP_UNAUTHORIZED &&
1947 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
1948 strcasecmp(con->http.hostname, "localhost") &&
1949 !con->http.tls)
1950 {
1951 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1952 "cupsdSendError: Encryption before authentication!");
1953 code = HTTP_UPGRADE_REQUIRED;
1954 }
1955#endif /* HAVE_SSL */
1956
ef416fc2 1957 /*
1958 * Put the request in the access_log file...
1959 */
1960
1961 cupsdLogRequest(con, code);
1962
1963 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendError: %d code=%d (%s)",
1964 con->http.fd, code, httpStatus(code));
1965
1966 /*
1967 * To work around bugs in some proxies, don't use Keep-Alive for some
1968 * error messages...
1969 */
1970
1971 if (code >= HTTP_BAD_REQUEST)
1972 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1973
1974 /*
1975 * Send an error message back to the client. If the error code is a
1976 * 400 or 500 series, make sure the message contains some text, too!
1977 */
1978
1979 if (!cupsdSendHeader(con, code, NULL))
1980 return (0);
1981
1982#ifdef HAVE_SSL
1983 if (code == HTTP_UPGRADE_REQUIRED)
1984 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
1985 return (0);
1986
1987 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n") < 0)
1988 return (0);
1989#endif /* HAVE_SSL */
1990
1991 if ((con->http.version >= HTTP_1_1 && !con->http.keep_alive) ||
1992 (code >= HTTP_BAD_REQUEST && code != HTTP_UPGRADE_REQUIRED))
1993 {
1994 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
1995 return (0);
1996 }
1997
1998 if (code >= HTTP_BAD_REQUEST)
1999 {
2000 /*
2001 * Send a human-readable error message.
2002 */
2003
80ca4592 2004 char message[4096], /* Message for user */
2005 urltext[1024], /* URL redirection text */
2006 redirect[1024]; /* Redirection link */
ef416fc2 2007 const char *text; /* Status-specific text */
2008
80ca4592 2009
2010 redirect[0] = '\0';
2011
ef416fc2 2012 if (code == HTTP_UNAUTHORIZED)
2013 text = _cupsLangString(con->language,
2014 _("Enter your username and password or the "
2015 "root username and password to access this "
2016 "page."));
2017 else if (code == HTTP_UPGRADE_REQUIRED)
80ca4592 2018 {
2019 text = urltext;
2020
2021 snprintf(urltext, sizeof(urltext),
2022 _cupsLangString(con->language,
2023 _("You must access this page using the URL "
2024 "<A HREF=\"https://%s:%d%s\">"
2025 "https://%s:%d%s</A>.")),
2026 con->servername, con->serverport, con->uri,
2027 con->servername, con->serverport, con->uri);
2028
2029 snprintf(redirect, sizeof(redirect),
2030 "<META HTTP-EQUIV=\"Refresh\" CONTENT=\"3;https://%s:%d%s\">\n",
2031 con->servername, con->serverport, con->uri);
2032 }
ef416fc2 2033 else
2034 text = "";
2035
2036 snprintf(message, sizeof(message),
2037 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" "
2038 "\"http://www.w3.org/TR/REC-html40/loose.dtd\">\n"
2039 "<HTML>\n"
2040 "<HEAD>\n"
2041 "\t<META HTTP-EQUIV=\"Content-Type\" "
2042 "CONTENT=\"text/html; charset=utf-8\">\n"
2043 "\t<TITLE>%d %s</TITLE>\n"
2044 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2045 "HREF=\"/cups.css\">\n"
80ca4592 2046 "%s"
ef416fc2 2047 "</HEAD>\n"
2048 "<BODY>\n"
2049 "<H1>%d %s</H1>\n"
2050 "<P>%s</P>\n"
2051 "</BODY>\n"
2052 "</HTML>\n",
80ca4592 2053 code, httpStatus(code), redirect, code, httpStatus(code), text);
ef416fc2 2054
2055 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2056 return (0);
2057 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2058 (int)strlen(message)) < 0)
2059 return (0);
2060 if (httpPrintf(HTTP(con), "\r\n") < 0)
2061 return (0);
2062 if (httpPrintf(HTTP(con), "%s", message) < 0)
2063 return (0);
2064 }
2065 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2066 return (0);
2067
2068 con->http.state = HTTP_WAITING;
2069
2070 return (1);
2071}
2072
2073
ef416fc2 2074/*
2075 * 'cupsdSendHeader()' - Send an HTTP request.
2076 */
2077
2078int /* O - 1 on success, 0 on failure */
2079cupsdSendHeader(cupsd_client_t *con, /* I - Client to send to */
2080 http_status_t code, /* I - HTTP status code */
2081 char *type) /* I - MIME type of document */
2082{
4744bd90 2083 /*
2084 * Send the HTTP status header...
2085 */
2086
ef416fc2 2087 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2088 con->http.version % 100, code, httpStatus(code)) < 0)
2089 return (0);
b423cd4c 2090
2091 if (code == HTTP_CONTINUE)
2092 {
4744bd90 2093 /*
2094 * 100-continue doesn't send any headers...
2095 */
2096
b423cd4c 2097 if (httpPrintf(HTTP(con), "\r\n") < 0)
2098 return (0);
2099 else
2100 return (1);
2101 }
2102
ef416fc2 2103 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2104 return (0);
2105 if (ServerHeader)
2106 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2107 return (0);
2108 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2109 {
2110 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2111 return (0);
2112 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2113 KeepAliveTimeout) < 0)
2114 return (0);
2115 }
2116 if (code == HTTP_METHOD_NOT_ALLOWED)
2117 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST\r\n") < 0)
2118 return (0);
2119
2120 if (code == HTTP_UNAUTHORIZED)
2121 {
2122 int auth_type; /* Authentication type */
2123
2124
2125 if (!con->best || con->best->type == AUTH_NONE)
2126 auth_type = DefaultAuthType;
2127 else
2128 auth_type = con->best->type;
2129
2130 if (auth_type != AUTH_DIGEST)
2131 {
2132 if (httpPrintf(HTTP(con),
2133 "WWW-Authenticate: Basic realm=\"CUPS\"\r\n") < 0)
2134 return (0);
2135 }
2136 else
2137 {
2138 if (httpPrintf(HTTP(con),
2139 "WWW-Authenticate: Digest realm=\"CUPS\", nonce=\"%s\"\r\n",
2140 con->http.hostname) < 0)
2141 return (0);
2142 }
2143 }
2144
e1d6a774 2145 if (con->language && strcmp(con->language->language, "C"))
ef416fc2 2146 {
2147 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2148 con->language->language) < 0)
2149 return (0);
2150 }
2151
e1d6a774 2152 if (type)
ef416fc2 2153 {
2154 if (!strcmp(type, "text/html"))
2155 {
2156 if (httpPrintf(HTTP(con),
2157 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2158 return (0);
2159 }
2160 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2161 return (0);
2162 }
2163
2164 return (1);
2165}
2166
2167
2168/*
2169 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2170 */
2171
2172void
2173cupsdUpdateCGI(void)
2174{
2175 char *ptr, /* Pointer to end of line in buffer */
2176 message[1024]; /* Pointer to message text */
2177 int loglevel; /* Log level for message */
2178
2179
2180 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2181 message, sizeof(message))) != NULL)
2182 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2183 break;
2184
2185 if (ptr == NULL && errno)
2186 {
2187 /*
2188 * Fatal error on pipe - should never happen!
2189 */
2190
2191 cupsdLogMessage(CUPSD_LOG_CRIT,
2192 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2193 strerror(errno));
2194 }
2195}
2196
2197
2198/*
2199 * 'cupsdWriteClient()' - Write data to a client as needed.
2200 */
2201
2202int /* O - 1 if success, 0 if fail */
2203cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2204{
2205 int bytes; /* Number of bytes written */
2206 char buf[16385]; /* Data buffer */
2207 char *bufptr; /* Pointer into buffer */
2208 ipp_state_t ipp_state; /* IPP state value */
2209
2210
2211#ifdef DEBUG
2212 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2213 "cupsdWriteClient(con=%p) %d response=%p, file=%d "
2214 "pipe_pid=%d state=%d",
2215 con, con->http.fd, con->response, con->file, con->pipe_pid,
2216 con->http.state);
2217#endif /* DEBUG */
2218
2219 if (con->http.state != HTTP_GET_SEND &&
2220 con->http.state != HTTP_POST_SEND)
2221 return (1);
2222
2223 if (con->response != NULL)
2224 {
2225 ipp_state = ippWrite(&(con->http), con->response);
2226 bytes = ipp_state != IPP_ERROR && ipp_state != IPP_DATA;
2227 }
2228 else if ((bytes = read(con->file, buf, sizeof(buf) - 1)) > 0)
2229 {
2230 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2231 "cupsdWriteClient: Read %d bytes from file %d...",
2232 bytes, con->file);
2233
2234 if (con->pipe_pid && !con->got_fields)
2235 {
2236 /*
2237 * Inspect the data for Content-Type and other fields.
2238 */
2239
2240 buf[bytes] = '\0';
2241
2242 for (bufptr = buf; !con->got_fields && *bufptr; bufptr ++)
2243 if (*bufptr == '\n')
2244 {
2245 /*
2246 * Send line to client...
2247 */
2248
2249 if (bufptr > buf && bufptr[-1] == '\r')
2250 bufptr[-1] = '\0';
2251 *bufptr++ = '\0';
2252
2253 cupsdLogMessage(CUPSD_LOG_DEBUG2, "Script header: %s", buf);
2254
2255 if (!con->sent_header)
2256 {
2257 /*
2258 * Handle redirection and CGI status codes...
2259 */
2260
2261 if (!strncasecmp(buf, "Location:", 9))
d6ae789d 2262 {
ef416fc2 2263 cupsdSendHeader(con, HTTP_SEE_OTHER, NULL);
d6ae789d 2264 if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
2265 return (0);
2266 }
ef416fc2 2267 else if (!strncasecmp(buf, "Status:", 7))
4744bd90 2268 cupsdSendError(con, atoi(buf + 7));
ef416fc2 2269 else
4744bd90 2270 {
ef416fc2 2271 cupsdSendHeader(con, HTTP_OK, NULL);
2272
4744bd90 2273 if (con->http.version == HTTP_1_1)
2274 {
2275 con->http.data_encoding = HTTP_ENCODE_CHUNKED;
ef416fc2 2276
4744bd90 2277 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
2278 return (0);
2279 }
2280 }
ef416fc2 2281
2282 con->sent_header = 1;
2283 }
2284
2285 if (strncasecmp(buf, "Status:", 7))
2286 httpPrintf(HTTP(con), "%s\r\n", buf);
2287
2288 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d %s",
2289 con->http.fd, buf);
2290
2291 /*
2292 * Update buffer...
2293 */
2294
2295 bytes -= (bufptr - buf);
2296 memmove(buf, bufptr, bytes + 1);
2297 bufptr = buf - 1;
2298
2299 /*
2300 * See if the line was empty...
2301 */
2302
2303 if (con->field_col == 0)
2304 con->got_fields = 1;
2305 else
2306 con->field_col = 0;
2307 }
2308 else if (*bufptr != '\r')
2309 con->field_col ++;
2310
2311 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2312 "cupsdWriteClient: %d bytes=%d, got_fields=%d",
2313 con->http.fd, bytes, con->got_fields);
2314
2315 if (bytes > 0 && !con->got_fields)
2316 {
2317 /*
2318 * Remaining text needs to go out...
2319 */
2320
2321 httpPrintf(HTTP(con), "%s", buf);
2322
2323 con->http.activity = time(NULL);
2324 return (1);
2325 }
2326 else if (bytes == 0)
ef416fc2 2327 con->http.activity = time(NULL);
ef416fc2 2328 }
2329
4744bd90 2330 if (bytes > 0)
ef416fc2 2331 {
4744bd90 2332 if (httpWrite2(HTTP(con), buf, bytes) < 0)
2333 {
2334 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2335 "cupsdWriteClient: %d Write of %d bytes failed!",
2336 con->http.fd, bytes);
ef416fc2 2337
4744bd90 2338 cupsdCloseClient(con);
2339 return (0);
2340 }
ef416fc2 2341
4744bd90 2342 con->bytes += bytes;
ef416fc2 2343
4744bd90 2344 if (con->http.state == HTTP_WAITING)
2345 bytes = 0;
2346 }
ef416fc2 2347 }
2348
2349 if (bytes <= 0)
2350 {
2351 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d bytes < 0",
2352 con->http.fd);
2353
2354 cupsdLogRequest(con, HTTP_OK);
2355
2356 httpFlushWrite(HTTP(con));
2357
2358 if (con->http.data_encoding == HTTP_ENCODE_CHUNKED)
2359 {
2360 if (httpPrintf(HTTP(con), "0\r\n\r\n") < 0)
2361 {
2362 cupsdCloseClient(con);
2363 return (0);
2364 }
2365 }
2366
2367 con->http.state = HTTP_WAITING;
2368
2369 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2370 "cupsdWriteClient: Removing fd %d from OutputSet...",
2371 con->http.fd);
2372
2373 FD_CLR(con->http.fd, OutputSet);
2374
2375 if (con->file >= 0)
2376 {
2377 if (FD_ISSET(con->file, InputSet))
2378 {
2379 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2380 "cupsdWriteClient: Removing fd %d from InputSet...",
2381 con->file);
2382 FD_CLR(con->file, InputSet);
2383 }
2384
2385 if (con->pipe_pid)
2386 cupsdEndProcess(con->pipe_pid, 0);
2387
2388 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2389 "cupsdWriteClient: %d Closing data file %d.",
2390 con->http.fd, con->file);
2391
2392 close(con->file);
2393 con->file = -1;
2394 con->pipe_pid = 0;
2395 }
2396
2397 if (con->filename)
2398 {
2399 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2400 "cupsdWriteClient: %d Removing temp file %s",
2401 con->http.fd, con->filename);
2402 unlink(con->filename);
2403 cupsdClearString(&con->filename);
2404 }
2405
2406 if (con->request != NULL)
2407 {
2408 ippDelete(con->request);
2409 con->request = NULL;
2410 }
2411
2412 if (con->response != NULL)
2413 {
2414 ippDelete(con->response);
2415 con->response = NULL;
2416 }
2417
2418 cupsdClearString(&con->command);
2419 cupsdClearString(&con->options);
2420
2421 if (!con->http.keep_alive)
2422 {
2423 cupsdCloseClient(con);
2424 return (0);
2425 }
2426 }
2427 else
2428 {
2429 con->file_ready = 0;
2430
2431 if (con->pipe_pid && !FD_ISSET(con->file, InputSet))
2432 {
2433 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2434 "cupsdWriteClient: Adding fd %d to InputSet...",
2435 con->file);
2436 FD_SET(con->file, InputSet);
2437 }
2438 }
2439
2440 con->http.activity = time(NULL);
2441
2442 return (1);
2443}
2444
2445
e1d6a774 2446/*
2447 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2448 */
2449
2450static int /* O - 1 if modified since */
2451check_if_modified(
2452 cupsd_client_t *con, /* I - Client connection */
2453 struct stat *filestats) /* I - File information */
2454{
2455 char *ptr; /* Pointer into field */
2456 time_t date; /* Time/date value */
2457 off_t size; /* Size/length value */
2458
2459
2460 size = 0;
2461 date = 0;
2462 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
2463
2464 if (*ptr == '\0')
2465 return (1);
2466
2467 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2468 "check_if_modified: %d If-Modified-Since=\"%s\"",
2469 con->http.fd, ptr);
2470
2471 while (*ptr != '\0')
2472 {
2473 while (isspace(*ptr) || *ptr == ';')
2474 ptr ++;
2475
2476 if (strncasecmp(ptr, "length=", 7) == 0)
2477 {
2478 ptr += 7;
2479 size = strtoll(ptr, NULL, 10);
2480
2481 while (isdigit(*ptr))
2482 ptr ++;
2483 }
2484 else if (isalpha(*ptr))
2485 {
2486 date = httpGetDateTime(ptr);
2487 while (*ptr != '\0' && *ptr != ';')
2488 ptr ++;
2489 }
e53920b9 2490 else
2491 ptr ++;
e1d6a774 2492 }
2493
2494 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2495 "check_if_modified: %d sizes=" CUPS_LLFMT ","
2496 CUPS_LLFMT " dates=%d,%d",
2497 con->http.fd, CUPS_LLCAST size,
2498 CUPS_LLCAST filestats->st_size, (int)date,
2499 (int)filestats->st_mtime);
2500
2501 return ((size != filestats->st_size && size != 0) ||
2502 (date < filestats->st_mtime && date != 0) ||
2503 (size == 0 && date == 0));
2504}
2505
2506
80ca4592 2507#ifdef HAVE_SSL
e1d6a774 2508/*
2509 * 'encrypt_client()' - Enable encryption for the client...
2510 */
2511
2512static int /* O - 1 on success, 0 on error */
2513encrypt_client(cupsd_client_t *con) /* I - Client to encrypt */
2514{
80ca4592 2515# ifdef HAVE_LIBSSL
e1d6a774 2516 SSL_CTX *context; /* Context for encryption */
2517 SSL *conn; /* Connection for encryption */
2518 unsigned long error; /* Error code */
2519
2520
2521 /*
2522 * Create the SSL context and accept the connection...
2523 */
2524
2525 context = SSL_CTX_new(SSLv23_server_method());
2526
2527 SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
2528 SSL_CTX_use_PrivateKey_file(context, ServerKey, SSL_FILETYPE_PEM);
2529 SSL_CTX_use_certificate_file(context, ServerCertificate, SSL_FILETYPE_PEM);
2530
2531 conn = SSL_new(context);
2532
2533 SSL_set_fd(conn, con->http.fd);
2534 if (SSL_accept(conn) != 1)
2535 {
2536 cupsdLogMessage(CUPSD_LOG_ERROR,
2537 "encrypt_client: Unable to encrypt connection from %s!",
2538 con->http.hostname);
2539
2540 while ((error = ERR_get_error()) != 0)
2541 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2542 ERR_error_string(error, NULL));
2543
2544 SSL_CTX_free(context);
2545 SSL_free(conn);
2546 return (0);
2547 }
2548
2549 cupsdLogMessage(CUPSD_LOG_DEBUG,
2550 "encrypt_client: %d Connection from %s now encrypted.",
2551 con->http.fd, con->http.hostname);
2552
2553 con->http.tls = conn;
2554 return (1);
2555
80ca4592 2556# elif defined(HAVE_GNUTLS)
e1d6a774 2557 http_tls_t *conn; /* TLS session object */
2558 int error; /* Error code */
2559 gnutls_certificate_server_credentials *credentials;
2560 /* TLS credentials */
2561
2562
2563 /*
2564 * Verify that we have a certificate...
2565 */
2566
2567 if (access(ServerKey, 0) || access(ServerCertificate, 0))
2568 {
2569 /*
2570 * Nope, make a self-signed certificate...
2571 */
2572
2573 make_certificate();
2574 }
2575
2576 /*
2577 * Create the SSL object and perform the SSL handshake...
2578 */
2579
89d46774 2580 conn = (http_tls_t *)malloc(sizeof(http_tls_t));
e1d6a774 2581
2582 if (conn == NULL)
2583 return (0);
2584
2585 credentials = (gnutls_certificate_server_credentials *)
2586 malloc(sizeof(gnutls_certificate_server_credentials));
2587 if (credentials == NULL)
2588 {
2589 cupsdLogMessage(CUPSD_LOG_ERROR,
2590 "encrypt_client: Unable to encrypt connection from %s!",
2591 con->http.hostname);
2592 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s", strerror(errno));
2593
2594 free(conn);
2595 return (0);
2596 }
2597
2598 gnutls_certificate_allocate_credentials(credentials);
2599 gnutls_certificate_set_x509_key_file(*credentials, ServerCertificate,
2600 ServerKey, GNUTLS_X509_FMT_PEM);
2601
2602 gnutls_init(&(conn->session), GNUTLS_SERVER);
2603 gnutls_set_default_priority(conn->session);
2604 gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
2605 gnutls_transport_set_ptr(conn->session,
2606 (gnutls_transport_ptr)((long)con->http.fd));
2607
2608 error = gnutls_handshake(conn->session);
2609
2610 if (error != GNUTLS_E_SUCCESS)
2611 {
2612 cupsdLogMessage(CUPSD_LOG_ERROR,
2613 "encrypt_client: Unable to encrypt connection from %s!",
2614 con->http.hostname);
2615 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2616 gnutls_strerror(error));
2617
2618 gnutls_deinit(conn->session);
2619 gnutls_certificate_free_credentials(*credentials);
2620 free(conn);
2621 free(credentials);
2622 return (0);
2623 }
2624
2625 cupsdLogMessage(CUPSD_LOG_DEBUG,
2626 "encrypt_client: %d Connection from %s now encrypted.",
2627 con->http.fd, con->http.hostname);
2628
2629 conn->credentials = credentials;
2630 con->http.tls = conn;
2631 return (1);
2632
80ca4592 2633# elif defined(HAVE_CDSASSL)
89d46774 2634 OSStatus error; /* Error code */
2635 http_tls_t *conn; /* CDSA connection information */
2636 cdsa_conn_ref_t u; /* Connection reference union */
e1d6a774 2637
2638
89d46774 2639 if ((conn = (http_tls_t *)malloc(sizeof(http_tls_t))) == NULL)
2640 return (0);
e1d6a774 2641
89d46774 2642 error = 0;
2643 conn->session = NULL;
2644 conn->certsArray = get_cdsa_server_certs();
e1d6a774 2645
89d46774 2646 if (!conn->certsArray)
e1d6a774 2647 {
2648 cupsdLogMessage(CUPSD_LOG_ERROR,
2649 "EncryptClient: Could not find signing key in keychain "
2650 "\"%s\"", ServerCertificate);
2651 error = errSSLBadCert; /* errSSLBadConfiguration is a better choice, but not available on 10.2.x */
2652 }
2653
2654 if (!error)
89d46774 2655 error = SSLNewContext(true, &conn->session);
e1d6a774 2656
2657 if (!error)
89d46774 2658 error = SSLSetIOFuncs(conn->session, _httpReadCDSA, _httpWriteCDSA);
2659
2660 if (!error)
2661 error = SSLSetProtocolVersion(conn->session, kSSLProtocol3);
e1d6a774 2662
2663 if (!error)
e53920b9 2664 {
2665 /*
2666 * Use a union to resolve warnings about int/pointer size mismatches...
2667 */
2668
2669 u.connection = NULL;
2670 u.sock = con->http.fd;
89d46774 2671 error = SSLSetConnection(conn->session, u.connection);
e53920b9 2672 }
e1d6a774 2673
2674 if (!error)
89d46774 2675 error = SSLSetAllowsExpiredCerts(conn->session, true);
e1d6a774 2676
2677 if (!error)
89d46774 2678 error = SSLSetAllowsAnyRoot(conn->session, true);
ef416fc2 2679
89d46774 2680 if (!error)
2681 error = SSLSetCertificate(conn->session, conn->certsArray);
ef416fc2 2682
e1d6a774 2683 if (!error)
2684 {
2685 /*
2686 * Perform SSL/TLS handshake
2687 */
ef416fc2 2688
89d46774 2689 while ((error = SSLHandshake(conn->session)) == errSSLWouldBlock)
e1d6a774 2690 usleep(1000);
2691 }
ef416fc2 2692
e1d6a774 2693 if (error)
2694 {
2695 cupsdLogMessage(CUPSD_LOG_ERROR,
2696 "encrypt_client: Unable to encrypt connection from %s!",
2697 con->http.hostname);
ef416fc2 2698
e1d6a774 2699 cupsdLogMessage(CUPSD_LOG_ERROR,
2700 "encrypt_client: CDSA error code is %d", (int)error);
ef416fc2 2701
e1d6a774 2702 con->http.error = error;
2703 con->http.status = HTTP_ERROR;
ef416fc2 2704
89d46774 2705 if (conn->session)
2706 SSLDisposeContext(conn->session);
2707
2708 if (conn->certsArray)
2709 CFRelease(conn->certsArray);
2710
2711 free(conn);
ef416fc2 2712
e1d6a774 2713 return (0);
ef416fc2 2714 }
2715
e1d6a774 2716 cupsdLogMessage(CUPSD_LOG_DEBUG,
2717 "encrypt_client: %d Connection from %s now encrypted.",
2718 con->http.fd, con->http.hostname);
ef416fc2 2719
e1d6a774 2720 con->http.tls = conn;
2721 return (1);
2722
80ca4592 2723# endif /* HAVE_LIBSSL */
ef416fc2 2724}
80ca4592 2725#endif /* HAVE_SSL */
ef416fc2 2726
2727
2728#ifdef HAVE_CDSASSL
2729/*
2730 * 'get_cdsa_server_certs()' - Convert a keychain name into the CFArrayRef
2731 * required by SSLSetCertificate.
2732 *
2733 * For now we assumes that there is exactly one SecIdentity in the
2734 * keychain - i.e. there is exactly one matching cert/private key pair.
2735 * In the future we will search a keychain for a SecIdentity matching a
2736 * specific criteria. We also skip the operation of adding additional
2737 * non-signing certs from the keychain to the CFArrayRef.
2738 *
2739 * To create a self-signed certificate for testing use the certtool.
2740 * Executing the following as root will do it:
2741 *
b423cd4c 2742 * certtool c k=/Library/Keychains/System.keychain
ef416fc2 2743 */
2744
2745static CFArrayRef /* O - Array of certificates */
2746get_cdsa_server_certs(void)
2747{
2748 OSStatus err; /* Error info */
2749 SecKeychainRef kcRef; /* Keychain reference */
2750 SecIdentitySearchRef srchRef; /* Search reference */
2751 SecIdentityRef identity; /* Identity */
2752 CFArrayRef ca; /* Certificate array */
2753
2754
2755 kcRef = NULL;
2756 srchRef = NULL;
2757 identity = NULL;
2758 ca = NULL;
2759 err = SecKeychainOpen(ServerCertificate, &kcRef);
2760
2761 if (err)
2762 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot open keychain \"%s\", error %d.",
2763 ServerCertificate, (int)err);
2764 else
2765 {
2766 /*
2767 * Search for "any" identity matching specified key use;
2768 * in this app, we expect there to be exactly one.
2769 */
2770
2771 err = SecIdentitySearchCreate(kcRef, CSSM_KEYUSE_SIGN, &srchRef);
2772
2773 if (err)
2774 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2775 "Cannot find signing key in keychain \"%s\", error %d",
2776 ServerCertificate, (int)err);
2777 else
2778 {
2779 err = SecIdentitySearchCopyNext(srchRef, &identity);
2780
2781 if (err)
2782 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2783 "Cannot find signing key in keychain \"%s\", error %d",
2784 ServerCertificate, (int)err);
2785 else
2786 {
2787 if (CFGetTypeID(identity) != SecIdentityGetTypeID())
2788 cupsdLogMessage(CUPSD_LOG_ERROR,
2789 "SecIdentitySearchCopyNext CFTypeID failure!");
2790 else
2791 {
2792 /*
2793 * Found one. Place it in a CFArray.
2794 * TBD: snag other (non-identity) certs from keychain and add them
2795 * to array as well.
2796 */
2797
b423cd4c 2798 ca = CFArrayCreate(NULL, (const void **)&identity, 1, &kCFTypeArrayCallBacks);
ef416fc2 2799
2800 if (ca == nil)
2801 cupsdLogMessage(CUPSD_LOG_ERROR, "CFArrayCreate error");
2802 }
2803
b423cd4c 2804 CFRelease(identity);
ef416fc2 2805 }
2806
b423cd4c 2807 CFRelease(srchRef);
ef416fc2 2808 }
2809
b423cd4c 2810 CFRelease(kcRef);
ef416fc2 2811 }
2812
2813 return (ca);
2814}
2815#endif /* HAVE_CDSASSL */
2816
2817
2818/*
2819 * 'get_file()' - Get a filename and state info.
2820 */
2821
2822static char * /* O - Real filename */
2823get_file(cupsd_client_t *con, /* I - Client connection */
2824 struct stat *filestats, /* O - File information */
2825 char *filename, /* IO - Filename buffer */
2826 int len) /* I - Buffer length */
2827{
2828 int status; /* Status of filesystem calls */
2829 char *ptr; /* Pointer info filename */
2830 int plen; /* Remaining length after pointer */
2831
2832
2833 /*
2834 * Need to add DocumentRoot global...
2835 */
2836
2837 if (!strncmp(con->uri, "/ppd/", 5))
2838 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
2839 else if (!strncmp(con->uri, "/admin/conf/", 12))
2840 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
2841 else if (!strncmp(con->uri, "/admin/log/", 11))
2842 {
2843 if (!strcmp(con->uri + 11, "access_log") && AccessLog[0] == '/')
2844 strlcpy(filename, AccessLog, len);
2845 else if (!strcmp(con->uri + 11, "error_log") && ErrorLog[0] == '/')
2846 strlcpy(filename, ErrorLog, len);
2847 else if (!strcmp(con->uri + 11, "page_log") && PageLog[0] == '/')
2848 strlcpy(filename, PageLog, len);
2849 else
2850 return (NULL);
2851 }
d6ae789d 2852 else if (con->language)
ef416fc2 2853 snprintf(filename, len, "%s/%s%s", DocumentRoot, con->language->language,
d6ae789d 2854 con->uri);
ef416fc2 2855 else
2856 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2857
2858 if ((ptr = strchr(filename, '?')) != NULL)
2859 *ptr = '\0';
2860
2861 /*
2862 * Grab the status for this language; if there isn't a language-specific file
2863 * then fallback to the default one...
2864 */
2865
d6ae789d 2866 if ((status = stat(filename, filestats)) != 0 && con->language &&
2867 strncmp(con->uri, "/ppd/", 5) &&
2868 strncmp(con->uri, "/admin/conf/", 12) &&
2869 strncmp(con->uri, "/admin/log/", 11))
ef416fc2 2870 {
2871 /*
d6ae789d 2872 * Drop the country code...
ef416fc2 2873 */
2874
d6ae789d 2875 char ll[3]; /* Short language name */
2876
2877
2878 strlcpy(ll, con->language->language, sizeof(ll));
2879 snprintf(filename, len, "%s/%s%s", DocumentRoot, ll, con->uri);
2880
2881 if ((ptr = strchr(filename, '?')) != NULL)
2882 *ptr = '\0';
2883
2884 if ((status = stat(filename, filestats)) != 0)
ef416fc2 2885 {
d6ae789d 2886 /*
2887 * Drop the language prefix and try the root directory...
2888 */
2889
ef416fc2 2890 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2891
2892 if ((ptr = strchr(filename, '?')) != NULL)
2893 *ptr = '\0';
2894
2895 status = stat(filename, filestats);
2896 }
2897 }
2898
2899 /*
2900 * If we're found a directory, get the index.html file instead...
2901 */
2902
2903 if (!status && S_ISDIR(filestats->st_mode))
2904 {
2905 if (filename[strlen(filename) - 1] != '/')
2906 strlcat(filename, "/", len);
2907
2908 ptr = filename + strlen(filename);
2909 plen = len - (ptr - filename);
2910
2911 strlcpy(ptr, "index.html", plen);
2912 status = stat(filename, filestats);
2913
2914#ifdef HAVE_JAVA
2915 if (status)
2916 {
2917 strlcpy(ptr, "index.class", plen);
2918 status = stat(filename, filestats);
2919 }
2920#endif /* HAVE_JAVA */
2921
2922#ifdef HAVE_PERL
2923 if (status)
2924 {
2925 strlcpy(ptr, "index.pl", plen);
2926 status = stat(filename, filestats);
2927 }
2928#endif /* HAVE_PERL */
2929
2930#ifdef HAVE_PHP
2931 if (status)
2932 {
2933 strlcpy(ptr, "index.php", plen);
2934 status = stat(filename, filestats);
2935 }
2936#endif /* HAVE_PHP */
2937
2938#ifdef HAVE_PYTHON
2939 if (status)
2940 {
2941 strlcpy(ptr, "index.pyc", plen);
2942 status = stat(filename, filestats);
2943 }
2944
2945 if (status)
2946 {
2947 strlcpy(ptr, "index.py", plen);
2948 status = stat(filename, filestats);
2949 }
2950#endif /* HAVE_PYTHON */
2951 }
2952
2953 cupsdLogMessage(CUPSD_LOG_DEBUG2, "get_file: %d filename=%s size=%d",
2954 con->http.fd, filename,
2955 status ? -1 : (int)filestats->st_size);
2956
2957 if (!status)
2958 con->http.data_remaining = (int)filestats->st_size;
2959
2960 if (status)
2961 return (NULL);
2962 else
2963 return (filename);
2964}
2965
2966
2967/*
2968 * 'install_conf_file()' - Install a configuration file.
2969 */
2970
2971static http_status_t /* O - Status */
2972install_conf_file(cupsd_client_t *con) /* I - Connection */
2973{
2974 cups_file_t *in, /* Input file */
2975 *out; /* Output file */
2976 char buffer[1024]; /* Copy buffer */
2977 int bytes; /* Number of bytes */
2978 char conffile[1024], /* Configuration filename */
2979 newfile[1024], /* New config filename */
2980 oldfile[1024]; /* Old config filename */
2981 struct stat confinfo; /* Config file info */
2982
2983
2984 /*
2985 * First construct the filenames...
2986 */
2987
2988 snprintf(conffile, sizeof(conffile), "%s%s", ServerRoot, con->uri + 11);
2989 snprintf(newfile, sizeof(newfile), "%s%s.N", ServerRoot, con->uri + 11);
2990 snprintf(oldfile, sizeof(oldfile), "%s%s.O", ServerRoot, con->uri + 11);
2991
2992 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...", conffile);
2993
2994 /*
2995 * Get the owner, group, and permissions of the configuration file.
2996 * If it doesn't exist, assign it to the User and Group in the
2997 * cupsd.conf file with mode 0640 permissions.
2998 */
2999
3000 if (stat(conffile, &confinfo))
3001 {
3002 confinfo.st_uid = User;
3003 confinfo.st_gid = Group;
3004 confinfo.st_mode = ConfigFilePerm;
3005 }
3006
3007 /*
3008 * Open the request file and new config file...
3009 */
3010
3011 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
3012 {
3013 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\" - %s",
3014 con->filename, strerror(errno));
3015 return (HTTP_SERVER_ERROR);
3016 }
3017
3018 if ((out = cupsFileOpen(newfile, "wb")) == NULL)
3019 {
3020 cupsFileClose(in);
3021 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open config file \"%s\" - %s",
3022 newfile, strerror(errno));
3023 return (HTTP_SERVER_ERROR);
3024 }
3025
3026 fchmod(cupsFileNumber(out), confinfo.st_mode);
3027 fchown(cupsFileNumber(out), confinfo.st_uid, confinfo.st_gid);
3028
3029 /*
3030 * Copy from the request to the new config file...
3031 */
3032
3033 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
3034 if (cupsFileWrite(out, buffer, bytes) < bytes)
3035 {
3036 cupsdLogMessage(CUPSD_LOG_ERROR,
3037 "Unable to copy to config file \"%s\" - %s",
3038 newfile, strerror(errno));
3039
3040 cupsFileClose(in);
3041 cupsFileClose(out);
3042 unlink(newfile);
3043
3044 return (HTTP_SERVER_ERROR);
3045 }
3046
3047 /*
3048 * Close the files...
3049 */
3050
3051 cupsFileClose(in);
3052 if (cupsFileClose(out))
3053 {
3054 cupsdLogMessage(CUPSD_LOG_ERROR,
3055 "Error file closing config file \"%s\" - %s",
3056 newfile, strerror(errno));
3057
3058 unlink(newfile);
3059
3060 return (HTTP_SERVER_ERROR);
3061 }
3062
3063 /*
3064 * Remove the request file...
3065 */
3066
3067 unlink(con->filename);
3068 cupsdClearString(&con->filename);
3069
3070 /*
3071 * Unlink the old backup, rename the current config file to the backup
3072 * filename, and rename the new config file to the config file name...
3073 */
3074
3075 if (unlink(oldfile))
3076 if (errno != ENOENT)
3077 {
3078 cupsdLogMessage(CUPSD_LOG_ERROR,
3079 "Unable to remove backup config file \"%s\" - %s",
3080 oldfile, strerror(errno));
3081
3082 unlink(newfile);
3083
3084 return (HTTP_SERVER_ERROR);
3085 }
3086
3087 if (rename(conffile, oldfile))
3088 if (errno != ENOENT)
3089 {
3090 cupsdLogMessage(CUPSD_LOG_ERROR,
3091 "Unable to rename old config file \"%s\" - %s",
3092 conffile, strerror(errno));
3093
3094 unlink(newfile);
3095
3096 return (HTTP_SERVER_ERROR);
3097 }
3098
3099 if (rename(newfile, conffile))
3100 {
3101 cupsdLogMessage(CUPSD_LOG_ERROR,
3102 "Unable to rename new config file \"%s\" - %s",
3103 newfile, strerror(errno));
3104
3105 rename(oldfile, conffile);
3106 unlink(newfile);
3107
3108 return (HTTP_SERVER_ERROR);
3109 }
3110
3111 /*
3112 * If the cupsd.conf file was updated, set the NeedReload flag...
3113 */
3114
3115 if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
3116 NeedReload = RELOAD_CUPSD;
3117 else
3118 NeedReload = RELOAD_ALL;
3119
3120 ReloadTime = time(NULL);
3121
3122 /*
3123 * Return that the file was created successfully...
3124 */
3125
3126 return (HTTP_CREATED);
3127}
3128
3129
e1d6a774 3130/*
3131 * 'is_cgi()' - Is the resource a CGI script/program?
3132 */
3133
3134static int /* O - 1 = CGI, 0 = file */
3135is_cgi(cupsd_client_t *con, /* I - Client connection */
3136 const char *filename, /* I - Real filename */
3137 struct stat *filestats, /* I - File information */
3138 mime_type_t *type) /* I - MIME type */
3139{
3140 const char *options; /* Options on URL */
3141
3142
3143 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3144 "is_cgi(con=%p, filename=\"%s\", filestats=%p, type=%s/%s)\n",
3145 con, filename, filestats, type ? type->super : "unknown",
3146 type ? type->type : "unknown");
3147
3148 /*
3149 * Get the options, if any...
3150 */
3151
3152 if ((options = strchr(con->uri, '?')) != NULL)
3153 options ++;
3154
3155 /*
3156 * Check for known types...
3157 */
3158
3159 if (!type || strcasecmp(type->super, "application"))
3160 {
3161 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3162 return (0);
3163 }
3164
3165 if (!strcasecmp(type->type, "x-httpd-cgi") &&
3166 (filestats->st_mode & 0111))
3167 {
3168 /*
3169 * "application/x-httpd-cgi" is a CGI script.
3170 */
3171
3172 cupsdSetString(&con->command, filename);
3173
3174 filename = strrchr(filename, '/') + 1; /* Filename always absolute */
3175
3176 cupsdSetString(&con->options, options);
3177
3178 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3179 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3180 con->command, con->options);
3181
3182 return (1);
3183 }
3184#ifdef HAVE_JAVA
3185 else if (!strcasecmp(type->type, "x-httpd-java"))
3186 {
3187 /*
3188 * "application/x-httpd-java" is a Java servlet.
3189 */
3190
3191 cupsdSetString(&con->command, CUPS_JAVA);
3192
3193 if (options)
3194 cupsdSetStringf(&con->options, "%s %s", filename, options);
3195 else
3196 cupsdSetString(&con->options, filename);
3197
3198 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3199 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3200 con->command, con->options);
3201
3202 return (1);
3203 }
3204#endif /* HAVE_JAVA */
3205#ifdef HAVE_PERL
3206 else if (!strcasecmp(type->type, "x-httpd-perl"))
3207 {
3208 /*
3209 * "application/x-httpd-perl" is a Perl page.
3210 */
3211
3212 cupsdSetString(&con->command, CUPS_PERL);
3213
3214 if (options)
3215 cupsdSetStringf(&con->options, "%s %s", filename, options);
3216 else
3217 cupsdSetString(&con->options, filename);
3218
3219 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3220 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3221 con->command, con->options);
3222
3223 return (1);
3224 }
3225#endif /* HAVE_PERL */
3226#ifdef HAVE_PHP
3227 else if (!strcasecmp(type->type, "x-httpd-php"))
3228 {
3229 /*
3230 * "application/x-httpd-php" is a PHP page.
3231 */
3232
3233 cupsdSetString(&con->command, CUPS_PHP);
3234
3235 if (options)
3236 cupsdSetStringf(&con->options, "%s %s", filename, options);
3237 else
3238 cupsdSetString(&con->options, filename);
3239
3240 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3241 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3242 con->command, con->options);
3243
3244 return (1);
3245 }
3246#endif /* HAVE_PHP */
3247#ifdef HAVE_PYTHON
3248 else if (!strcasecmp(type->type, "x-httpd-python"))
3249 {
3250 /*
3251 * "application/x-httpd-python" is a Python page.
3252 */
3253
3254 cupsdSetString(&con->command, CUPS_PYTHON);
3255
3256 if (options)
3257 cupsdSetStringf(&con->options, "%s %s", filename, options);
3258 else
3259 cupsdSetString(&con->options, filename);
3260
3261 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3262 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3263 con->command, con->options);
3264
3265 return (1);
3266 }
3267#endif /* HAVE_PYTHON */
3268
3269 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3270
3271 return (0);
3272}
3273
3274
ef416fc2 3275/*
3276 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3277 */
3278
3279static int /* O - 0 if relative, 1 if absolute */
3280is_path_absolute(const char *path) /* I - Input path */
3281{
3282 /*
3283 * Check for a leading slash...
3284 */
3285
3286 if (path[0] != '/')
3287 return (0);
3288
3289 /*
3290 * Check for "/.." in the path...
3291 */
3292
3293 while ((path = strstr(path, "/..")) != NULL)
3294 {
3295 if (!path[3] || path[3] == '/')
3296 return (0);
3297
3298 path ++;
3299 }
3300
3301 /*
3302 * If we haven't found any relative paths, return 1 indicating an
3303 * absolute path...
3304 */
3305
3306 return (1);
3307}
3308
3309
4744bd90 3310#ifdef HAVE_GNUTLS
3311/*
3312 * 'make_certificate()' - Make a self-signed SSL/TLS certificate.
3313 */
3314
3315static void
3316make_certificate(void)
3317{
3318 gnutls_x509_crt crt; /* Self-signed certificate */
3319 gnutls_x509_privkey key; /* Encryption key */
3320 cups_lang_t *language; /* Default language info */
3321 cups_file_t *fp; /* Key/cert file */
3322 unsigned char buffer[8192]; /* Buffer for x509 data */
3323 size_t bytes; /* Number of bytes of data */
3324 unsigned char serial[4]; /* Serial number buffer */
3325 time_t curtime; /* Current time */
3326 int result; /* Result of GNU TLS calls */
3327
3328
3329 /*
3330 * Create the encryption key...
3331 */
3332
3333 cupsdLogMessage(CUPSD_LOG_INFO, "Generating server key...");
3334
3335 gnutls_x509_privkey_init(&key);
3336 gnutls_x509_privkey_generate(key, GNUTLS_PK_RSA, 2048, 0);
3337
3338 /*
3339 * Save it...
3340 */
3341
3342 bytes = sizeof(buffer);
3343
3344 if ((result = gnutls_x509_privkey_export(key, GNUTLS_X509_FMT_PEM,
3345 buffer, &bytes)) < 0)
3346 {
3347 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to export server key - %s",
3348 gnutls_strerror(result));
3349 gnutls_x509_privkey_deinit(key);
3350 return;
3351 }
3352 else if ((fp = cupsFileOpen(ServerKey, "w")) != NULL)
3353 {
3354 cupsFileWrite(fp, (char *)buffer, bytes);
3355 cupsFileClose(fp);
3356
3357 cupsdLogMessage(CUPSD_LOG_INFO, "Created server key file \"%s\"...",
3358 ServerKey);
3359 }
3360 else
3361 {
3362 cupsdLogMessage(CUPSD_LOG_ERROR,
3363 "Unable to create server key file \"%s\" - %s",
3364 ServerKey, strerror(errno));
3365 gnutls_x509_privkey_deinit(key);
3366 return;
3367 }
3368
3369 /*
3370 * Create the self-signed certificate...
3371 */
3372
3373 cupsdLogMessage(CUPSD_LOG_INFO, "Generating self-signed certificate...");
3374
3375 language = cupsLangDefault();
3376 curtime = time(NULL);
3377 serial[0] = curtime >> 24;
3378 serial[1] = curtime >> 16;
3379 serial[2] = curtime >> 8;
3380 serial[3] = curtime;
3381
3382 gnutls_x509_crt_init(&crt);
3383 if (strlen(language->language) == 5)
3384 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3385 language->language + 3, 2);
3386 else
3387 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3388 "US", 2);
3389 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COMMON_NAME, 0,
3390 ServerName, strlen(ServerName));
3391 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
3392 ServerName, strlen(ServerName));
3393 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME,
3394 0, "Unknown", 7);
3395 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0,
3396 "Unknown", 7);
3397 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_LOCALITY_NAME, 0,
3398 "Unknown", 7);
3399 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_PKCS9_EMAIL, 0,
3400 ServerAdmin, strlen(ServerAdmin));
3401 gnutls_x509_crt_set_key(crt, key);
3402 gnutls_x509_crt_set_serial(crt, serial, sizeof(serial));
3403 gnutls_x509_crt_set_activation_time(crt, curtime);
3404 gnutls_x509_crt_set_expiration_time(crt, curtime + 10 * 365 * 86400);
3405 gnutls_x509_crt_set_ca_status(crt, 0);
3406 gnutls_x509_crt_set_subject_alternative_name(crt, GNUTLS_SAN_DNSNAME,
3407 ServerName);
3408 gnutls_x509_crt_set_key_purpose_oid(crt, GNUTLS_KP_TLS_WWW_SERVER, 0);
3409 gnutls_x509_crt_set_key_usage(crt, GNUTLS_KEY_KEY_ENCIPHERMENT);
3410 gnutls_x509_crt_set_version(crt, 3);
3411
3412 bytes = sizeof(buffer);
3413 if (gnutls_x509_crt_get_key_id(crt, 0, buffer, &bytes) >= 0)
3414 gnutls_x509_crt_set_subject_key_id(crt, buffer, bytes);
3415
3416 gnutls_x509_crt_sign(crt, crt, key);
3417
3418 /*
3419 * Save it...
3420 */
3421
3422 bytes = sizeof(buffer);
3423 if ((result = gnutls_x509_crt_export(crt, GNUTLS_X509_FMT_PEM,
3424 buffer, &bytes)) < 0)
3425 cupsdLogMessage(CUPSD_LOG_ERROR,
3426 "Unable to export server certificate - %s",
3427 gnutls_strerror(result));
3428 else if ((fp = cupsFileOpen(ServerCertificate, "w")) != NULL)
3429 {
3430 cupsFileWrite(fp, (char *)buffer, bytes);
3431 cupsFileClose(fp);
3432
3433 cupsdLogMessage(CUPSD_LOG_INFO,
3434 "Created 10-year server certificate file \"%s\"...",
3435 ServerCertificate);
3436 }
3437 else
3438 cupsdLogMessage(CUPSD_LOG_ERROR,
3439 "Unable to create server certificate file \"%s\" - %s",
3440 ServerCertificate, strerror(errno));
3441
3442 /*
3443 * Cleanup...
3444 */
3445
3446 gnutls_x509_crt_deinit(crt);
3447 gnutls_x509_privkey_deinit(key);
3448}
3449#endif /* HAVE_GNUTLS */
3450
3451
ef416fc2 3452/*
3453 * 'pipe_command()' - Pipe the output of a command to the remote client.
3454 */
3455
3456static int /* O - Process ID */
3457pipe_command(cupsd_client_t *con, /* I - Client connection */
3458 int infile, /* I - Standard input for command */
3459 int *outfile, /* O - Standard output for command */
3460 char *command, /* I - Command to run */
3461 char *options, /* I - Options for command */
3462 int root) /* I - Run as root? */
3463{
3464 int i; /* Looping var */
3465 int pid; /* Process ID */
b423cd4c 3466 char *commptr, /* Command string pointer */
3467 commch; /* Command string character */
ef416fc2 3468 char *uriptr; /* URI string pointer */
3469 int fds[2]; /* Pipe FDs */
3470 int argc; /* Number of arguments */
3471 int envc; /* Number of environment variables */
3472 char argbuf[10240], /* Argument buffer */
3473 *argv[100], /* Argument strings */
b423cd4c 3474 *envp[MAX_ENV + 17]; /* Environment variables */
ef416fc2 3475 char content_length[1024], /* CONTENT_LENGTH environment variable */
3476 content_type[1024], /* CONTENT_TYPE environment variable */
3477 http_cookie[32768], /* HTTP_COOKIE environment variable */
3478 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3479 lang[1024], /* LANG environment variable */
b423cd4c 3480 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 3481 *query_string, /* QUERY_STRING env variable */
3482 remote_addr[1024], /* REMOTE_ADDR environment variable */
3483 remote_host[1024], /* REMOTE_HOST environment variable */
3484 remote_user[1024], /* REMOTE_USER environment variable */
3485 script_name[1024], /* SCRIPT_NAME environment variable */
3486 server_name[1024], /* SERVER_NAME environment variable */
3487 server_port[1024]; /* SERVER_PORT environment variable */
3488
3489
3490 /*
3491 * Parse a copy of the options string, which is of the form:
3492 *
b423cd4c 3493 * argument+argument+argument
3494 * ?argument+argument+argument
3495 * param=value&param=value
3496 * ?param=value&param=value
3497 * /name?argument+argument+argument
3498 * /name?param=value&param=value
ef416fc2 3499 *
3500 * If the string contains an "=" character after the initial name,
3501 * then we treat it as a HTTP GET form request and make a copy of
3502 * the remaining string for the environment variable.
3503 *
3504 * The string is always parsed out as command-line arguments, to
3505 * be consistent with Apache...
3506 */
3507
3508 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3509 "pipe_command: command=\"%s\", options=\"%s\"",
3510 command, options);
3511
b423cd4c 3512 argv[0] = command;
ef416fc2 3513 query_string = NULL;
3514
b423cd4c 3515 if (options)
3516 strlcpy(argbuf, options, sizeof(argbuf));
3517 else
3518 argbuf[0] = '\0';
3519
3520 if (argbuf[0] == '/')
ef416fc2 3521 {
3522 /*
b423cd4c 3523 * Found some trailing path information, set PATH_INFO...
ef416fc2 3524 */
3525
b423cd4c 3526 if ((commptr = strchr(argbuf, '?')) == NULL)
3527 commptr = argbuf + strlen(argbuf);
ef416fc2 3528
b423cd4c 3529 commch = *commptr;
3530 *commptr = '\0';
3531 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
3532 *commptr = commch;
3533 }
3534 else
3535 {
3536 commptr = argbuf;
3537 path_info[0] = '\0';
3538 }
ef416fc2 3539
b423cd4c 3540 if (*commptr == '?' && con->operation == HTTP_GET)
3541 {
3542 commptr ++;
3543 cupsdSetStringf(&query_string, "QUERY_STRING=%s", commptr);
3544 }
ef416fc2 3545
b423cd4c 3546 argc = 1;
ef416fc2 3547
b423cd4c 3548 if (*commptr)
3549 {
3550 argv[argc ++] = commptr;
ef416fc2 3551
b423cd4c 3552 for (; *commptr && argc < 99; commptr ++)
3553 {
ef416fc2 3554 /*
b423cd4c 3555 * Break arguments whenever we see a + or space...
ef416fc2 3556 */
3557
b423cd4c 3558 if (*commptr == ' ' || *commptr == '+')
3559 {
3560 while (*commptr == ' ' || *commptr == '+')
3561 *commptr++ = '\0';
ef416fc2 3562
b423cd4c 3563 /*
3564 * If we don't have a blank string, save it as another argument...
3565 */
ef416fc2 3566
b423cd4c 3567 if (*commptr)
3568 {
3569 argv[argc] = commptr;
3570 argc ++;
3571 }
3572 else
3573 break;
3574 }
3575 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
3576 isxdigit(commptr[2] & 255))
3577 {
3578 /*
3579 * Convert the %xx notation to the individual character.
3580 */
ef416fc2 3581
b423cd4c 3582 if (commptr[1] >= '0' && commptr[1] <= '9')
3583 *commptr = (commptr[1] - '0') << 4;
3584 else
3585 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
ef416fc2 3586
b423cd4c 3587 if (commptr[2] >= '0' && commptr[2] <= '9')
3588 *commptr |= commptr[2] - '0';
3589 else
3590 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 3591
b423cd4c 3592 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 3593
b423cd4c 3594 /*
3595 * Check for a %00 and break if that is the case...
3596 */
ef416fc2 3597
b423cd4c 3598 if (!*commptr)
3599 break;
3600 }
ef416fc2 3601 }
3602 }
3603
3604 argv[argc] = NULL;
3605
ef416fc2 3606 /*
3607 * Setup the environment variables as needed...
3608 */
3609
3610 if (con->language)
3611 snprintf(lang, sizeof(lang), "LANG=%s.UTF-8", con->language->language);
3612 else
3613 strcpy(lang, "LANG=C");
3614
3615 strcpy(remote_addr, "REMOTE_ADDR=");
3616 httpAddrString(con->http.hostaddr, remote_addr + 12,
3617 sizeof(remote_addr) - 12);
3618
3619 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
3620 con->http.hostname);
3621
3622 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
3623 if ((uriptr = strchr(script_name, '?')) != NULL)
3624 *uriptr = '\0';
3625
3626 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
3627
3628 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3629 con->servername);
3630
3631 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
3632
3633 envp[envc ++] = lang;
3634 envp[envc ++] = "REDIRECT_STATUS=1";
3635 envp[envc ++] = server_name;
3636 envp[envc ++] = server_port;
3637 envp[envc ++] = remote_addr;
3638 envp[envc ++] = remote_host;
3639 envp[envc ++] = script_name;
3640
b423cd4c 3641 if (path_info[0])
3642 envp[envc ++] = path_info;
3643
ef416fc2 3644 if (con->username[0])
3645 {
3646 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
3647
3648 envp[envc ++] = remote_user;
3649 }
3650
3651 if (con->http.version == HTTP_1_1)
3652 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
3653 else if (con->http.version == HTTP_1_0)
3654 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
3655 else
3656 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
3657
3658 if (con->http.cookie)
3659 {
3660 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
3661 con->http.cookie);
3662 envp[envc ++] = http_cookie;
3663 }
3664
3665 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
3666 {
3667 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
3668 con->http.fields[HTTP_FIELD_USER_AGENT]);
3669 envp[envc ++] = http_user_agent;
3670 }
3671
3672 if (con->operation == HTTP_GET)
3673 {
3674 for (i = 0; i < argc; i ++)
3675 cupsdLogMessage(CUPSD_LOG_DEBUG2, "argv[%d] = \"%s\"", i, argv[i]);
3676
3677 envp[envc ++] = "REQUEST_METHOD=GET";
3678
3679 if (query_string)
3680 {
3681 /*
3682 * Add GET form variables after ?...
3683 */
3684
3685 envp[envc ++] = query_string;
3686 }
3687 }
3688 else
3689 {
e1d6a774 3690 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
3691 CUPS_LLCAST con->bytes);
ef416fc2 3692 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
3693 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
3694
3695 envp[envc ++] = "REQUEST_METHOD=POST";
3696 envp[envc ++] = content_length;
3697 envp[envc ++] = content_type;
3698 }
3699
3700 /*
3701 * Tell the CGI if we are using encryption...
3702 */
3703
3704 if (con->http.encryption == HTTP_ENCRYPT_ALWAYS)
3705 envp[envc ++] = "HTTPS=ON";
3706
3707 /*
3708 * Terminate the environment array...
3709 */
3710
3711 envp[envc] = NULL;
3712
3713 if (LogLevel == CUPSD_LOG_DEBUG2)
3714 {
3715 for (i = 0; i < argc; i ++)
3716 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3717 "pipe_command: argv[%d] = \"%s\"", i, argv[i]);
3718 for (i = 0; i < envc; i ++)
3719 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3720 "pipe_command: envp[%d] = \"%s\"", i, envp[i]);
3721 }
3722
3723 /*
3724 * Create a pipe for the output...
3725 */
3726
3727 if (cupsdOpenPipe(fds))
3728 {
3729 cupsdClearString(&query_string);
3730
3731 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create pipes for CGI %s - %s",
3732 argv[0], strerror(errno));
3733 return (0);
3734 }
3735
3736 /*
3737 * Then execute the command...
3738 */
3739
3740 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
3741 -1, root, &pid) < 0)
3742 {
3743 /*
3744 * Error - can't fork!
3745 */
3746
3747 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to fork for CGI %s - %s", argv[0],
3748 strerror(errno));
3749
3750 cupsdClosePipe(fds);
3751 pid = 0;
3752 }
3753 else
3754 {
3755 /*
3756 * Fork successful - return the PID...
3757 */
3758
3759 if (con->username[0])
3760 cupsdAddCert(pid, con->username);
3761
3762 cupsdLogMessage(CUPSD_LOG_DEBUG, "CGI %s started - PID = %d", command, pid);
3763
3764 *outfile = fds[0];
3765 close(fds[1]);
3766 }
3767
3768 cupsdClearString(&query_string);
3769
3770 return (pid);
3771}
3772
3773
3774/*
e1d6a774 3775 * 'send_file()' - Send a file via HTTP.
3776 */
3777
3778static int /* O - 0 on failure, 1 on success */
3779send_file(cupsd_client_t *con, /* I - Client connection */
3780 http_status_t code, /* I - HTTP status */
3781 char *filename, /* I - Filename */
3782 char *type, /* I - File type */
3783 struct stat *filestats) /* O - File information */
3784{
3785 con->file = open(filename, O_RDONLY);
3786
3787 cupsdLogMessage(CUPSD_LOG_DEBUG, "send_file: %d file=%d", con->http.fd,
3788 con->file);
3789
3790 if (con->file < 0)
3791 return (0);
3792
3793 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
3794
3795 con->pipe_pid = 0;
3796
3797 if (!cupsdSendHeader(con, code, type))
3798 return (0);
3799
3800 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
3801 httpGetDateString(filestats->st_mtime)) < 0)
3802 return (0);
3803 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
3804 CUPS_LLCAST filestats->st_size) < 0)
3805 return (0);
3806 if (httpPrintf(HTTP(con), "\r\n") < 0)
3807 return (0);
3808
3809 con->http.data_encoding = HTTP_ENCODE_LENGTH;
3810 con->http.data_remaining = filestats->st_size;
3811
3812 if (con->http.data_remaining <= INT_MAX)
3813 con->http._data_remaining = con->http.data_remaining;
3814 else
3815 con->http._data_remaining = INT_MAX;
3816
3817 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3818 "send_file: Adding fd %d to OutputSet...", con->http.fd);
3819
3820 FD_SET(con->http.fd, OutputSet);
3821
3822 return (1);
3823}
3824
3825
3826/*
89d46774 3827 * End of "$Id: client.c 5416 2006-04-17 21:24:17Z mike $".
ef416fc2 3828 */
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