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[thirdparty/cups.git] / scheduler / client.c
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ef416fc2 1/*
e1d6a774 2 * "$Id: client.c 5305 2006-03-18 03:05:12Z 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);
e1d6a774 69static int encrypt_client(cupsd_client_t *con);
ef416fc2 70#ifdef HAVE_CDSASSL
71static CFArrayRef get_cdsa_server_certs(void);
72#endif /* HAVE_CDSASSL */
73static char *get_file(cupsd_client_t *con, struct stat *filestats,
74 char *filename, int len);
75static http_status_t install_conf_file(cupsd_client_t *con);
e1d6a774 76static int is_cgi(cupsd_client_t *con, const char *filename,
77 struct stat *filestats, mime_type_t *type);
ef416fc2 78static int is_path_absolute(const char *path);
4744bd90 79#ifdef HAVE_GNUTLS
80static void make_certificate(void);
81#endif /* HAVE_GNUTLS */
ef416fc2 82static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
83 char *command, char *options, int root);
e1d6a774 84static int send_file(cupsd_client_t *con, http_status_t code,
85 char *filename, char *type,
86 struct stat *filestats);
ef416fc2 87
88
89/*
90 * 'cupsdAcceptClient()' - Accept a new client.
91 */
92
93void
94cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
95{
ef416fc2 96 int count; /* Count of connections on a host */
97 int val; /* Parameter value */
bd7854cb 98 cupsd_client_t *con, /* New client pointer */
99 *tempcon; /* Temporary client pointer */
ef416fc2 100 http_addrlist_t *addrlist, /* List of adddresses for host */
101 *addr; /* Current address */
102 socklen_t addrlen; /* Length of address */
103 char *hostname; /* Hostname for address */
104 http_addr_t temp; /* Temporary address variable */
105 static time_t last_dos = 0; /* Time of last DoS attack */
106
107
108 cupsdLogMessage(CUPSD_LOG_DEBUG2,
bd7854cb 109 "cupsdAcceptClient(lis=%p) %d Clients = %d",
110 lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 111
112 /*
113 * Make sure we don't have a full set of clients already...
114 */
115
bd7854cb 116 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 117 return;
118
119 /*
120 * Get a pointer to the next available client...
121 */
122
bd7854cb 123 if (!Clients)
124 Clients = cupsArrayNew(NULL, NULL);
125
126 if (!Clients)
127 return;
128
129 con = calloc(1, sizeof(cupsd_client_t));
ef416fc2 130
ef416fc2 131 con->http.activity = time(NULL);
132 con->file = -1;
133 con->http.hostaddr = &(con->clientaddr);
134
135 /*
136 * Accept the client and get the remote address...
137 */
138
139 addrlen = sizeof(http_addr_t);
140
141 if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
142 &addrlen)) < 0)
143 {
144 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
145 strerror(errno));
bd7854cb 146 free(con);
ef416fc2 147 return;
148 }
149
150#ifdef AF_INET6
151 if (lis->address.addr.sa_family == AF_INET6)
152 {
153 /*
154 * Save the connected port number...
155 */
156
157 con->http.hostaddr->ipv6.sin6_port = lis->address.ipv6.sin6_port;
158
159 /*
160 * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
161 * can more easily use...
162 */
163
164 if (con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
165 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
166 ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
167 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
168 }
169 else
170#endif /* AF_INET6 */
171 if (lis->address.addr.sa_family == AF_INET)
172 con->http.hostaddr->ipv4.sin_port = lis->address.ipv4.sin_port;
173
174 /*
175 * Check the number of clients on the same address...
176 */
177
bd7854cb 178 for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
179 tempcon;
180 tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
181 if (httpAddrEqual(tempcon->http.hostaddr, con->http.hostaddr))
ef416fc2 182 {
183 count ++;
184 if (count >= MaxClientsPerHost)
185 break;
186 }
187
188 if (count >= MaxClientsPerHost)
189 {
190 if ((time(NULL) - last_dos) >= 60)
191 {
192 last_dos = time(NULL);
193 cupsdLogMessage(CUPSD_LOG_WARN,
bd7854cb 194 "Possible DoS attack - more than %d clients connecting "
195 "from %s!",
196 MaxClientsPerHost, tempcon->http.hostname);
ef416fc2 197 }
198
199#ifdef WIN32
200 closesocket(con->http.fd);
201#else
202 close(con->http.fd);
203#endif /* WIN32 */
204
bd7854cb 205 free(con);
ef416fc2 206 return;
207 }
208
209 /*
210 * Get the hostname or format the IP address as needed...
211 */
212
213 if (httpAddrLocalhost(con->http.hostaddr))
214 {
215 /*
216 * Map accesses from the loopback interface to "localhost"...
217 */
218
219 strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
220 hostname = con->http.hostname;
221 }
222 else
223 {
224 /*
225 * Map accesses from the same host to the server name.
226 */
227
228 for (addr = ServerAddrs; addr; addr = addr->next)
229 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
230 break;
231
232 if (addr)
233 {
234 strlcpy(con->http.hostname, ServerName, sizeof(con->http.hostname));
235 hostname = con->http.hostname;
236 }
237 else if (HostNameLookups)
238 hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
239 sizeof(con->http.hostname));
240 else
241 {
242 hostname = NULL;
243 httpAddrString(con->http.hostaddr, con->http.hostname,
244 sizeof(con->http.hostname));
245 }
246 }
247
248 if (hostname == NULL && HostNameLookups == 2)
249 {
250 /*
251 * Can't have an unresolved IP address with double-lookups enabled...
252 */
253
254 cupsdLogMessage(CUPSD_LOG_DEBUG2,
255 "cupsdAcceptClient: Closing connection %d...",
256 con->http.fd);
257
258#ifdef WIN32
259 closesocket(con->http.fd);
260#else
261 close(con->http.fd);
262#endif /* WIN32 */
263
264 cupsdLogMessage(CUPSD_LOG_WARN,
265 "Name lookup failed - connection from %s closed!",
266 con->http.hostname);
bd7854cb 267
268 free(con);
ef416fc2 269 return;
270 }
271
272 if (HostNameLookups == 2)
273 {
274 /*
275 * Do double lookups as needed...
276 */
277
278 if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL)) != NULL)
279 {
280 /*
281 * See if the hostname maps to the same IP address...
282 */
283
284 for (addr = addrlist; addr; addr = addr->next)
285 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
286 break;
287 }
288 else
289 addr = NULL;
290
291 httpAddrFreeList(addrlist);
292
293 if (!addr)
294 {
295 /*
296 * Can't have a hostname that doesn't resolve to the same IP address
297 * with double-lookups enabled...
298 */
299
300 cupsdLogMessage(CUPSD_LOG_DEBUG2,
301 "cupsdAcceptClient: Closing connection %d...",
302 con->http.fd);
303
304#ifdef WIN32
305 closesocket(con->http.fd);
306#else
307 close(con->http.fd);
308#endif /* WIN32 */
309
310 cupsdLogMessage(CUPSD_LOG_WARN,
311 "IP lookup failed - connection from %s closed!",
312 con->http.hostname);
bd7854cb 313 free(con);
ef416fc2 314 return;
315 }
316 }
317
318#ifdef AF_INET6
319 if (con->http.hostaddr->addr.sa_family == AF_INET6)
320 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv6)",
321 con->http.fd, con->http.hostname,
322 ntohs(con->http.hostaddr->ipv6.sin6_port));
323 else
324#endif /* AF_INET6 */
325#ifdef AF_LOCAL
326 if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
327 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s (Domain)",
328 con->http.fd, con->http.hostname);
329 else
330#endif /* AF_LOCAL */
331 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv4)",
332 con->http.fd, con->http.hostname,
333 ntohs(con->http.hostaddr->ipv4.sin_port));
334
335 /*
336 * Get the local address the client connected to...
337 */
338
339 addrlen = sizeof(temp);
340 if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
341 {
342 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
343 strerror(errno));
344
345 strcpy(con->servername, "localhost");
346 con->serverport = LocalPort;
347 }
348 else
349 {
350#ifdef AF_INET6
351 if (temp.addr.sa_family == AF_INET6)
352 {
353 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
354 con->serverport = ntohs(lis->address.ipv6.sin6_port);
355 }
356 else
357#endif /* AF_INET6 */
358 if (temp.addr.sa_family == AF_INET)
359 {
360 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
361 con->serverport = ntohs(lis->address.ipv4.sin_port);
362 }
363 else
364 {
365 strcpy(con->servername, "localhost");
366 con->serverport = LocalPort;
367 }
368 }
369
bd7854cb 370 cupsArrayAdd(Clients, con);
371
ef416fc2 372 cupsdLogMessage(CUPSD_LOG_DEBUG2,
373 "cupsdAcceptClient: %d connected to server on %s:%d",
374 con->http.fd, con->servername, con->serverport);
375
376 /*
377 * Using TCP_NODELAY improves responsiveness, especially on systems
378 * with a slow loopback interface... Since we write large buffers
379 * when sending print files and requests, there shouldn't be any
380 * performance penalty for this...
381 */
382
383 val = 1;
384 setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
385
386 /*
387 * Close this file on all execs...
388 */
389
390 fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
391
392 /*
393 * Add the socket to the select() input mask.
394 */
395
396 cupsdLogMessage(CUPSD_LOG_DEBUG2,
397 "cupsdAcceptClient: Adding fd %d to InputSet...",
398 con->http.fd);
399 FD_SET(con->http.fd, InputSet);
400
ef416fc2 401 /*
402 * Temporarily suspend accept()'s until we lose a client...
403 */
404
bd7854cb 405 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 406 cupsdPauseListening();
407
408#ifdef HAVE_SSL
409 /*
410 * See if we are connecting on a secure port...
411 */
412
413 if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
414 {
415 /*
416 * https connection; go secure...
417 */
418
419 con->http.encryption = HTTP_ENCRYPT_ALWAYS;
420
e1d6a774 421 encrypt_client(con);
ef416fc2 422 }
423 else
424 con->auto_ssl = 1;
425#endif /* HAVE_SSL */
426}
427
428
429/*
430 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
431 */
432
433void
434cupsdCloseAllClients(void)
435{
bd7854cb 436 cupsd_client_t *con; /* Current client */
437
438
439 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
440 con;
441 con = (cupsd_client_t *)cupsArrayNext(Clients))
442 cupsdCloseClient(con);
ef416fc2 443}
444
445
446/*
447 * 'cupsdCloseClient()' - Close a remote client.
448 */
449
450int /* O - 1 if partial close, 0 if fully closed */
451cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
452{
453 int partial; /* Do partial close for SSL? */
454#ifdef HAVE_LIBSSL
455 SSL_CTX *context; /* Context for encryption */
456 SSL *conn; /* Connection for encryption */
457 unsigned long error; /* Error code */
458#elif defined(HAVE_GNUTLS)
459 http_tls_t *conn; /* TLS connection information */
460 int error; /* Error code */
461 gnutls_certificate_server_credentials *credentials;
462 /* TLS credentials */
463#endif /* HAVE_LIBSSL */
464
465
466 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdCloseClient: %d", con->http.fd);
467
468 /*
469 * Flush pending writes before closing...
470 */
471
472 httpFlushWrite(HTTP(con));
473
474 partial = 0;
475
476#ifdef HAVE_SSL
477 /*
478 * Shutdown encryption as needed...
479 */
480
481 if (con->http.tls)
482 {
483 partial = 1;
484
485# ifdef HAVE_LIBSSL
486 conn = (SSL *)(con->http.tls);
487 context = SSL_get_SSL_CTX(conn);
488
489 switch (SSL_shutdown(conn))
490 {
491 case 1 :
492 cupsdLogMessage(CUPSD_LOG_INFO,
493 "cupsdCloseClient: SSL shutdown successful!");
494 break;
495 case -1 :
496 cupsdLogMessage(CUPSD_LOG_ERROR,
497 "cupsdCloseClient: Fatal error during SSL shutdown!");
498 default :
499 while ((error = ERR_get_error()) != 0)
500 cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdCloseClient: %s",
501 ERR_error_string(error, NULL));
502 break;
503 }
504
505 SSL_CTX_free(context);
506 SSL_free(conn);
507
508# elif defined(HAVE_GNUTLS)
509 conn = (http_tls_t *)(con->http.tls);
510 credentials = (gnutls_certificate_server_credentials *)(conn->credentials);
511
512 error = gnutls_bye(conn->session, GNUTLS_SHUT_WR);
513 switch (error)
514 {
515 case GNUTLS_E_SUCCESS:
516 cupsdLogMessage(CUPSD_LOG_INFO,
517 "cupsdCloseClient: SSL shutdown successful!");
518 break;
519 default:
520 cupsdLogMessage(CUPSD_LOG_ERROR,
521 "cupsdCloseClient: %s", gnutls_strerror(error));
522 break;
523 }
524
525 gnutls_deinit(conn->session);
526 gnutls_certificate_free_credentials(*credentials);
527 free(credentials);
528 free(conn);
529
530# elif defined(HAVE_CDSASSL)
b423cd4c 531 while (SSLClose((SSLContextRef)con->http.tls) == errSSLWouldBlock)
532 usleep(1000);
533
ef416fc2 534 SSLDisposeContext((SSLContextRef)con->http.tls);
535# endif /* HAVE_LIBSSL */
536
537 con->http.tls = NULL;
538 }
539#endif /* HAVE_SSL */
540
541 if (con->pipe_pid != 0)
542 {
543 /*
544 * Stop any CGI process...
545 */
546
547 cupsdLogMessage(CUPSD_LOG_DEBUG2,
548 "cupsdCloseClient: %d Killing process ID %d...",
549 con->http.fd, con->pipe_pid);
550 cupsdEndProcess(con->pipe_pid, 1);
551 con->pipe_pid = 0;
552 }
553
554 if (con->file >= 0)
555 {
556 if (FD_ISSET(con->file, InputSet))
557 {
558 cupsdLogMessage(CUPSD_LOG_DEBUG2,
559 "cupsdCloseClient: %d Removing fd %d from InputSet...",
560 con->http.fd, con->file);
561 FD_CLR(con->file, InputSet);
562 }
563
564 cupsdLogMessage(CUPSD_LOG_DEBUG2,
565 "cupsdCloseClient: %d Closing data file %d.",
566 con->http.fd, con->file);
567
568 close(con->file);
569 con->file = -1;
570 }
571
572 /*
573 * Close the socket and clear the file from the input set for select()...
574 */
575
576 if (con->http.fd > 0)
577 {
578 if (partial)
579 {
580 /*
581 * Only do a partial close so that the encrypted client gets everything.
582 */
583
584 cupsdLogMessage(CUPSD_LOG_DEBUG2,
585 "cupsdCloseClient: Removing fd %d from OutputSet...",
586 con->http.fd);
587 shutdown(con->http.fd, 0);
588 FD_CLR(con->http.fd, OutputSet);
589 }
590 else
591 {
592 /*
593 * Shut the socket down fully...
594 */
595
596 cupsdLogMessage(CUPSD_LOG_DEBUG2,
597 "cupsdCloseClient: Removing fd %d from InputSet and OutputSet...",
598 con->http.fd);
599 close(con->http.fd);
600 FD_CLR(con->http.fd, InputSet);
601 FD_CLR(con->http.fd, OutputSet);
602 con->http.fd = -1;
603 }
604 }
605
606 if (!partial)
607 {
608 /*
609 * Free memory...
610 */
611
612 if (con->http.input_set)
613 free(con->http.input_set);
614
615 httpClearCookie(HTTP(con));
616
617 cupsdClearString(&con->filename);
618 cupsdClearString(&con->command);
619 cupsdClearString(&con->options);
620
621 if (con->request)
622 {
623 ippDelete(con->request);
624 con->request = NULL;
625 }
626
627 if (con->response)
628 {
629 ippDelete(con->response);
630 con->response = NULL;
631 }
632
633 if (con->language)
634 {
635 cupsLangFree(con->language);
636 con->language = NULL;
637 }
638
639 /*
640 * Re-enable new client connections if we are going back under the
641 * limit...
642 */
643
bd7854cb 644 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 645 cupsdResumeListening();
646
647 /*
648 * Compact the list of clients as necessary...
649 */
650
bd7854cb 651 cupsArrayRemove(Clients, con);
ef416fc2 652
bd7854cb 653 free(con);
ef416fc2 654 }
655
656 return (partial);
657}
658
659
ef416fc2 660/*
661 * 'cupsdReadClient()' - Read data from a client.
662 */
663
664int /* O - 1 on success, 0 on error */
665cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
666{
667 char line[32768], /* Line from client... */
668 operation[64], /* Operation code from socket */
669 version[64], /* HTTP version number string */
670 locale[64], /* Locale */
671 *ptr; /* Pointer into strings */
672 int major, minor; /* HTTP version numbers */
673 http_status_t status; /* Transfer status */
674 ipp_state_t ipp_state; /* State of IPP transfer */
675 int bytes; /* Number of bytes to POST */
676 char *filename; /* Name of file for GET/HEAD */
677 char buf[1024]; /* Buffer for real filename */
678 struct stat filestats; /* File information */
679 mime_type_t *type; /* MIME type of file */
680 cupsd_printer_t *p; /* Printer */
681 static unsigned request_id = 0; /* Request ID for temp files */
682
683
684 status = HTTP_CONTINUE;
685
686 cupsdLogMessage(CUPSD_LOG_DEBUG2,
687 "cupsdReadClient: %d, used=%d, file=%d state=%d",
688 con->http.fd, con->http.used, con->file, con->http.state);
689
690 if (con->http.error)
691 {
692 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: http error seen...");
693 return (cupsdCloseClient(con));
694 }
695
696#ifdef HAVE_SSL
697 if (con->auto_ssl)
698 {
699 /*
700 * Automatically check for a SSL/TLS handshake...
701 */
702
703 con->auto_ssl = 0;
704
705 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
706 (!buf[0] || !strchr("DGHOPT", buf[0])))
707 {
708 /*
709 * Encrypt this connection...
710 */
711
712 cupsdLogMessage(CUPSD_LOG_DEBUG2,
713 "cupsdReadClient: Saw first byte %02X, auto-negotiating SSL/TLS session...",
714 buf[0] & 255);
715
e1d6a774 716 encrypt_client(con);
ef416fc2 717 return (1);
718 }
719 }
720#endif /* HAVE_SSL */
721
722 switch (con->http.state)
723 {
724 case HTTP_WAITING :
725 /*
726 * See if we've received a request line...
727 */
728
729 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
730 {
731 cupsdLogMessage(CUPSD_LOG_DEBUG2,
732 "cupsdReadClient: httpGets returned EOF...");
733 return (cupsdCloseClient(con));
734 }
735
736 /*
737 * Ignore blank request lines...
738 */
739
740 if (line[0] == '\0')
741 break;
742
743 /*
744 * Clear other state variables...
745 */
746
747 httpClearFields(HTTP(con));
748
749 con->http.activity = time(NULL);
750 con->http.version = HTTP_1_0;
751 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
752 con->http.data_encoding = HTTP_ENCODE_LENGTH;
753 con->http.data_remaining = 0;
754 con->http._data_remaining = 0;
755 con->operation = HTTP_WAITING;
756 con->bytes = 0;
757 con->file = -1;
758 con->file_ready = 0;
759 con->pipe_pid = 0;
760 con->username[0] = '\0';
761 con->password[0] = '\0';
762 con->uri[0] = '\0';
763
764 cupsdClearString(&con->command);
765 cupsdClearString(&con->options);
766
767 if (con->language != NULL)
768 {
769 cupsLangFree(con->language);
770 con->language = NULL;
771 }
772
773 /*
774 * Grab the request line...
775 */
776
777 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
778 {
779 case 1 :
780 cupsdLogMessage(CUPSD_LOG_ERROR,
781 "Bad request line \"%s\" from %s!", line,
782 con->http.hostname);
783 cupsdSendError(con, HTTP_BAD_REQUEST);
784 return (cupsdCloseClient(con));
785 case 2 :
786 con->http.version = HTTP_0_9;
787 break;
788 case 3 :
789 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
790 {
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 }
797
798 if (major < 2)
799 {
800 con->http.version = (http_version_t)(major * 100 + minor);
801 if (con->http.version == HTTP_1_1 && KeepAlive)
802 con->http.keep_alive = HTTP_KEEPALIVE_ON;
803 else
804 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
805 }
806 else
807 {
808 cupsdSendError(con, HTTP_NOT_SUPPORTED);
809 return (cupsdCloseClient(con));
810 }
811 break;
812 }
813
814 /*
815 * Handle full URLs in the request line...
816 */
817
818 if (strcmp(con->uri, "*"))
819 {
820 char method[HTTP_MAX_URI], /* Method/scheme */
821 userpass[HTTP_MAX_URI], /* Username:password */
822 hostname[HTTP_MAX_URI], /* Hostname */
823 resource[HTTP_MAX_URI]; /* Resource path */
824 int port; /* Port number */
825
826
827 /*
828 * Separate the URI into its components...
829 */
830
a4d04587 831 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
832 method, sizeof(method),
ef416fc2 833 userpass, sizeof(userpass),
834 hostname, sizeof(hostname), &port,
835 resource, sizeof(resource));
836
837 /*
838 * Only allow URIs with the servername, localhost, or an IP
839 * address...
840 */
841
842 if (strcmp(method, "file") &&
843 strcasecmp(hostname, ServerName) &&
844 strcasecmp(hostname, "localhost") &&
845 !isdigit(hostname[0]))
846 {
847 /*
848 * Nope, we don't do proxies...
849 */
850
851 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad URI \"%s\" in request!",
852 con->uri);
853 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED);
854 return (cupsdCloseClient(con));
855 }
856
857 /*
858 * Copy the resource portion back into the URI; both resource and
859 * con->uri are HTTP_MAX_URI bytes in size...
860 */
861
862 strcpy(con->uri, resource);
863 }
864
865 /*
866 * Process the request...
867 */
868
869 if (!strcmp(operation, "GET"))
870 con->http.state = HTTP_GET;
871 else if (!strcmp(operation, "PUT"))
872 con->http.state = HTTP_PUT;
873 else if (!strcmp(operation, "POST"))
874 con->http.state = HTTP_POST;
875 else if (!strcmp(operation, "DELETE"))
876 con->http.state = HTTP_DELETE;
877 else if (!strcmp(operation, "TRACE"))
878 con->http.state = HTTP_TRACE;
879 else if (!strcmp(operation, "OPTIONS"))
880 con->http.state = HTTP_OPTIONS;
881 else if (!strcmp(operation, "HEAD"))
882 con->http.state = HTTP_HEAD;
883 else
884 {
885 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad operation \"%s\"!", operation);
886 cupsdSendError(con, HTTP_BAD_REQUEST);
887 return (cupsdCloseClient(con));
888 }
889
890 con->start = time(NULL);
891 con->operation = con->http.state;
892
893 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %s %s HTTP/%d.%d", con->http.fd,
894 operation, con->uri,
895 con->http.version / 100, con->http.version % 100);
896
897 con->http.status = HTTP_OK;
898
899 case HTTP_OPTIONS :
900 case HTTP_DELETE :
901 case HTTP_GET :
902 case HTTP_HEAD :
903 case HTTP_POST :
904 case HTTP_PUT :
905 case HTTP_TRACE :
906 /*
907 * Parse incoming parameters until the status changes...
908 */
909
910 status = httpUpdate(HTTP(con));
911
912 if (status != HTTP_OK && status != HTTP_CONTINUE)
913 {
914 cupsdSendError(con, HTTP_BAD_REQUEST);
915 return (cupsdCloseClient(con));
916 }
917 break;
918
919 default :
920 break; /* Anti-compiler-warning-code */
921 }
922
923 /*
924 * Handle new transfers...
925 */
926
927 if (status == HTTP_OK)
928 {
929 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
930 {
931 /*
932 * Figure out the locale from the Accept-Language and Content-Type
933 * fields...
934 */
935
936 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ',')) != NULL)
937 *ptr = '\0';
938
939 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ';')) != NULL)
940 *ptr = '\0';
941
942 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE], "charset=")) != NULL)
943 {
944 /*
945 * Combine language and charset, and trim any extra params in the
946 * content-type.
947 */
948
949 snprintf(locale, sizeof(locale), "%s.%s",
950 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
951
952 if ((ptr = strchr(locale, ',')) != NULL)
953 *ptr = '\0';
954 }
955 else
956 snprintf(locale, sizeof(locale), "%s.%s",
957 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], DefaultCharset);
958
959 con->language = cupsLangGet(locale);
960 }
961 else
962 con->language = cupsLangGet(DefaultLocale);
963
964 cupsdAuthorize(con);
965
966 if (!strncmp(con->http.fields[HTTP_FIELD_CONNECTION], "Keep-Alive", 10) &&
967 KeepAlive)
968 con->http.keep_alive = HTTP_KEEPALIVE_ON;
969
970 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
971 con->http.version >= HTTP_1_1)
972 {
973 /*
974 * HTTP/1.1 and higher require the "Host:" field...
975 */
976
977 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
978 return (cupsdCloseClient(con));
979 }
980 else if (con->operation == HTTP_OPTIONS)
981 {
982 /*
983 * Do OPTIONS command...
984 */
985
986 if (con->best && con->best->type != AUTH_NONE)
987 {
988 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL))
989 return (cupsdCloseClient(con));
990 }
991
992 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
993 con->http.tls == NULL)
994 {
995#ifdef HAVE_SSL
996 /*
997 * Do encryption stuff...
998 */
999
1000 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1001 return (cupsdCloseClient(con));
1002
1003 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1004 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1005 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1006 httpPrintf(HTTP(con), "\r\n");
1007
e1d6a774 1008 encrypt_client(con);
ef416fc2 1009#else
1010 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1011 return (cupsdCloseClient(con));
1012#endif /* HAVE_SSL */
1013 }
1014
ef416fc2 1015 if (!cupsdSendHeader(con, HTTP_OK, NULL))
1016 return (cupsdCloseClient(con));
1017
1018 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1019 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1020 httpPrintf(HTTP(con), "\r\n");
1021 }
1022 else if (!is_path_absolute(con->uri))
1023 {
1024 /*
1025 * Protect against malicious users!
1026 */
1027
1028 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1029 return (cupsdCloseClient(con));
1030 }
1031 else
1032 {
1033 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1034 con->http.tls == NULL)
1035 {
1036#ifdef HAVE_SSL
1037 /*
1038 * Do encryption stuff...
1039 */
1040
1041 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1042 return (cupsdCloseClient(con));
1043
1044 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1045 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1046 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1047 httpPrintf(HTTP(con), "\r\n");
1048
e1d6a774 1049 encrypt_client(con);
ef416fc2 1050#else
1051 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1052 return (cupsdCloseClient(con));
1053#endif /* HAVE_SSL */
1054 }
1055
1056 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1057 {
1058 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1059 "cupsdReadClient: Unauthorized request for %s...\n",
1060 con->uri);
1061 cupsdSendError(con, status);
1062 return (cupsdCloseClient(con));
1063 }
1064
b423cd4c 1065 if (con->http.expect &&
1066 (con->operation == HTTP_POST || con->operation == HTTP_PUT))
ef416fc2 1067 {
b423cd4c 1068 if (con->http.expect == HTTP_CONTINUE)
1069 {
1070 /*
1071 * Send 100-continue header...
1072 */
1073
1074 if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL))
1075 return (cupsdCloseClient(con));
1076 }
1077 else
1078 {
1079 /*
1080 * Send 417-expectation-failed header...
1081 */
1082
1083 if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL))
1084 return (cupsdCloseClient(con));
1085
1086 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1087 httpPrintf(HTTP(con), "\r\n");
1088 }
ef416fc2 1089 }
1090
1091 switch (con->http.state)
1092 {
1093 case HTTP_GET_SEND :
1094 if (!strncmp(con->uri, "/printers/", 10) &&
1095 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1096 {
1097 /*
1098 * Send PPD file - get the real printer name since printer
1099 * names are not case sensitive but filenames can be...
1100 */
1101
1102 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1103
1104 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1105 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1106 else
1107 {
1108 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1109 return (cupsdCloseClient(con));
1110
1111 break;
1112 }
1113 }
1114
1115 if ((!strncmp(con->uri, "/admin", 6) &&
1116 strncmp(con->uri, "/admin/conf/", 12) &&
1117 strncmp(con->uri, "/admin/log/", 11)) ||
1118 !strncmp(con->uri, "/printers", 9) ||
1119 !strncmp(con->uri, "/classes", 8) ||
1120 !strncmp(con->uri, "/help", 5) ||
1121 !strncmp(con->uri, "/jobs", 5))
1122 {
1123 /*
1124 * Send CGI output...
1125 */
1126
1127 if (!strncmp(con->uri, "/admin", 6))
1128 {
1129 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1130 ServerBin);
1131
b423cd4c 1132 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1133 }
1134 else if (!strncmp(con->uri, "/printers", 9))
1135 {
1136 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1137 ServerBin);
b423cd4c 1138
1139 if (con->uri[9] && con->uri[10])
1140 cupsdSetString(&con->options, con->uri + 9);
1141 else
1142 cupsdSetString(&con->options, NULL);
ef416fc2 1143 }
1144 else if (!strncmp(con->uri, "/classes", 8))
1145 {
1146 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1147 ServerBin);
b423cd4c 1148
1149 if (con->uri[8] && con->uri[9])
1150 cupsdSetString(&con->options, con->uri + 8);
1151 else
1152 cupsdSetString(&con->options, NULL);
ef416fc2 1153 }
1154 else if (!strncmp(con->uri, "/jobs", 5))
1155 {
1156 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1157 ServerBin);
b423cd4c 1158
1159 if (con->uri[5] && con->uri[6])
1160 cupsdSetString(&con->options, con->uri + 5);
1161 else
1162 cupsdSetString(&con->options, NULL);
ef416fc2 1163 }
1164 else
1165 {
1166 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1167 ServerBin);
ef416fc2 1168
b423cd4c 1169 if (con->uri[5] && con->uri[6])
1170 cupsdSetString(&con->options, con->uri + 5);
1171 else
1172 cupsdSetString(&con->options, NULL);
1173 }
ef416fc2 1174
1175 if (!cupsdSendCommand(con, con->command, con->options, 0))
1176 {
1177 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1178 return (cupsdCloseClient(con));
1179 }
1180 else
1181 cupsdLogRequest(con, HTTP_OK);
1182
1183 if (con->http.version <= HTTP_1_0)
1184 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1185 }
1186 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1187 (strchr(con->uri + 12, '/') ||
1188 strlen(con->uri) == 12)) ||
1189 (!strncmp(con->uri, "/admin/log/", 11) &&
1190 (strchr(con->uri + 11, '/') ||
1191 strlen(con->uri) == 11)))
1192 {
1193 /*
1194 * GET can only be done to configuration files under
1195 * /admin/conf...
1196 */
1197
1198 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1199 return (cupsdCloseClient(con));
1200
1201 break;
1202 }
1203 else
1204 {
1205 /*
1206 * Serve a file...
1207 */
1208
1209 if ((filename = get_file(con, &filestats, buf,
1210 sizeof(buf))) == NULL)
1211 {
1212 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1213 return (cupsdCloseClient(con));
1214
1215 break;
1216 }
1217
4400e98d 1218 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1219
e1d6a774 1220 if (is_cgi(con, filename, &filestats, type))
ef416fc2 1221 {
1222 /*
1223 * Note: con->command and con->options were set by
e1d6a774 1224 * is_cgi()...
ef416fc2 1225 */
1226
1227 if (!cupsdSendCommand(con, con->command, con->options, 0))
1228 {
1229 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1230 return (cupsdCloseClient(con));
1231 }
1232 else
1233 cupsdLogRequest(con, HTTP_OK);
1234
1235 if (con->http.version <= HTTP_1_0)
1236 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1237 break;
1238 }
1239
1240 if (!check_if_modified(con, &filestats))
1241 {
1242 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1243 return (cupsdCloseClient(con));
1244 }
1245 else
1246 {
1247 if (type == NULL)
1248 strcpy(line, "text/plain");
1249 else
1250 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1251
e1d6a774 1252 if (!send_file(con, HTTP_OK, filename, line, &filestats))
ef416fc2 1253 return (cupsdCloseClient(con));
1254 }
1255 }
1256 break;
1257
1258 case HTTP_POST_RECV :
1259 /*
1260 * See if the POST request includes a Content-Length field, and if
1261 * so check the length against any limits that are set...
1262 */
1263
1264 cupsdLogMessage(CUPSD_LOG_DEBUG2, "POST %s", con->uri);
1265 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1266 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1267
1268 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1269 MaxRequestSize > 0 &&
1270 con->http.data_remaining > MaxRequestSize)
1271 {
1272 /*
1273 * Request too large...
1274 */
1275
1276 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1277 return (cupsdCloseClient(con));
1278
1279 break;
1280 }
1281 else if (con->http.data_remaining < 0)
1282 {
1283 /*
1284 * Negative content lengths are invalid!
1285 */
1286
1287 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1288 return (cupsdCloseClient(con));
1289
1290 break;
1291 }
1292
1293 /*
1294 * See what kind of POST request this is; for IPP requests the
1295 * content-type field will be "application/ipp"...
1296 */
1297
1298 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1299 "application/ipp"))
1300 con->request = ippNew();
1301 else if ((!strncmp(con->uri, "/admin", 6) &&
1302 strncmp(con->uri, "/admin/conf/", 12) &&
1303 strncmp(con->uri, "/admin/log/", 11)) ||
1304 !strncmp(con->uri, "/printers", 9) ||
1305 !strncmp(con->uri, "/classes", 8) ||
1306 !strncmp(con->uri, "/help", 5) ||
1307 !strncmp(con->uri, "/jobs", 5))
1308 {
1309 /*
1310 * CGI request...
1311 */
1312
1313 if (!strncmp(con->uri, "/admin", 6))
1314 {
1315 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1316 ServerBin);
1317
b423cd4c 1318 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1319 }
1320 else if (!strncmp(con->uri, "/printers", 9))
1321 {
1322 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1323 ServerBin);
b423cd4c 1324
1325 if (con->uri[9] && con->uri[10])
1326 cupsdSetString(&con->options, con->uri + 9);
1327 else
1328 cupsdSetString(&con->options, NULL);
ef416fc2 1329 }
1330 else if (!strncmp(con->uri, "/classes", 8))
1331 {
1332 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1333 ServerBin);
b423cd4c 1334
1335 if (con->uri[8] && con->uri[9])
1336 cupsdSetString(&con->options, con->uri + 8);
1337 else
1338 cupsdSetString(&con->options, NULL);
ef416fc2 1339 }
1340 else if (!strncmp(con->uri, "/jobs", 5))
1341 {
1342 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1343 ServerBin);
b423cd4c 1344
1345 if (con->uri[5] && con->uri[6])
1346 cupsdSetString(&con->options, con->uri + 5);
1347 else
1348 cupsdSetString(&con->options, NULL);
ef416fc2 1349 }
1350 else
1351 {
1352 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1353 ServerBin);
ef416fc2 1354
b423cd4c 1355 if (con->uri[5] && con->uri[6])
1356 cupsdSetString(&con->options, con->uri + 5);
1357 else
1358 cupsdSetString(&con->options, NULL);
1359 }
ef416fc2 1360
1361 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b423cd4c 1362 "cupsdReadClient: %d command=\"%s\", "
1363 "options = \"%s\"",
ef416fc2 1364 con->http.fd, con->command, con->options);
1365
1366 if (con->http.version <= HTTP_1_0)
1367 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1368 }
1369 else
1370 {
1371 /*
1372 * POST to a file...
1373 */
1374
1375 if ((filename = get_file(con, &filestats, buf,
1376 sizeof(buf))) == NULL)
1377 {
1378 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1379 return (cupsdCloseClient(con));
1380
1381 break;
1382 }
1383
4400e98d 1384 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1385
e1d6a774 1386 if (!is_cgi(con, filename, &filestats, type))
ef416fc2 1387 {
1388 /*
1389 * Only POST to CGI's...
1390 */
1391
1392 if (!cupsdSendError(con, HTTP_UNAUTHORIZED))
1393 return (cupsdCloseClient(con));
1394 }
1395 }
1396 break;
1397
1398 case HTTP_PUT_RECV :
1399 /*
1400 * Validate the resource name...
1401 */
1402
1403 if (strncmp(con->uri, "/admin/conf/", 12) ||
1404 strchr(con->uri + 12, '/') ||
1405 strlen(con->uri) == 12)
1406 {
1407 /*
1408 * PUT can only be done to configuration files under
1409 * /admin/conf...
1410 */
1411
1412 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1413 return (cupsdCloseClient(con));
1414
1415 break;
1416 }
1417
1418 /*
1419 * See if the PUT request includes a Content-Length field, and if
1420 * so check the length against any limits that are set...
1421 */
1422
1423 cupsdLogMessage(CUPSD_LOG_DEBUG2, "PUT %s", con->uri);
1424 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1425 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1426
1427 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1428 MaxRequestSize > 0 &&
1429 con->http.data_remaining > MaxRequestSize)
1430 {
1431 /*
1432 * Request too large...
1433 */
1434
1435 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1436 return (cupsdCloseClient(con));
1437
1438 break;
1439 }
1440 else if (con->http.data_remaining < 0)
1441 {
1442 /*
1443 * Negative content lengths are invalid!
1444 */
1445
1446 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1447 return (cupsdCloseClient(con));
1448
1449 break;
1450 }
1451
1452 /*
1453 * Open a temporary file to hold the request...
1454 */
1455
1456 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1457 request_id ++);
1458 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1459
1460 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1461 "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1462 con->filename, con->file);
1463
1464 if (con->file < 0)
1465 {
1466 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1467 return (cupsdCloseClient(con));
1468 }
1469
1470 fchmod(con->file, 0640);
1471 fchown(con->file, RunUser, Group);
1472 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1473 break;
1474
1475 case HTTP_DELETE :
1476 case HTTP_TRACE :
1477 cupsdSendError(con, HTTP_NOT_IMPLEMENTED);
1478 return (cupsdCloseClient(con));
1479
1480 case HTTP_HEAD :
1481 if (!strncmp(con->uri, "/printers/", 10) &&
1482 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1483 {
1484 /*
1485 * Send PPD file - get the real printer name since printer
1486 * names are not case sensitive but filenames can be...
1487 */
1488
1489 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1490
1491 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1492 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1493 else
1494 {
1495 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1496 return (cupsdCloseClient(con));
1497
1498 break;
1499 }
1500 }
1501
1502 if ((!strncmp(con->uri, "/admin", 6) &&
1503 strncmp(con->uri, "/admin/conf/", 12) &&
1504 strncmp(con->uri, "/admin/log/", 11)) ||
1505 !strncmp(con->uri, "/printers", 9) ||
1506 !strncmp(con->uri, "/classes", 8) ||
1507 !strncmp(con->uri, "/help", 5) ||
1508 !strncmp(con->uri, "/jobs", 5))
1509 {
1510 /*
1511 * CGI output...
1512 */
1513
1514 if (!cupsdSendHeader(con, HTTP_OK, "text/html"))
1515 return (cupsdCloseClient(con));
1516
1517 if (httpPrintf(HTTP(con), "\r\n") < 0)
1518 return (cupsdCloseClient(con));
1519
1520 cupsdLogRequest(con, HTTP_OK);
1521 }
1522 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1523 (strchr(con->uri + 12, '/') ||
1524 strlen(con->uri) == 12)) ||
1525 (!strncmp(con->uri, "/admin/log/", 11) &&
1526 (strchr(con->uri + 11, '/') ||
1527 strlen(con->uri) == 11)))
1528 {
1529 /*
1530 * HEAD can only be done to configuration files under
1531 * /admin/conf...
1532 */
1533
1534 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1535 return (cupsdCloseClient(con));
1536
1537 break;
1538 }
1539 else if ((filename = get_file(con, &filestats, buf,
1540 sizeof(buf))) == NULL)
1541 {
1542 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html"))
1543 return (cupsdCloseClient(con));
1544
1545 cupsdLogRequest(con, HTTP_NOT_FOUND);
1546 }
1547 else if (!check_if_modified(con, &filestats))
1548 {
1549 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1550 return (cupsdCloseClient(con));
1551
1552 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
1553 }
1554 else
1555 {
1556 /*
1557 * Serve a file...
1558 */
1559
4400e98d 1560 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1561 if (type == NULL)
1562 strcpy(line, "text/plain");
1563 else
1564 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1565
1566 if (!cupsdSendHeader(con, HTTP_OK, line))
1567 return (cupsdCloseClient(con));
1568
1569 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
1570 httpGetDateString(filestats.st_mtime)) < 0)
1571 return (cupsdCloseClient(con));
1572
1573 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
1574 (unsigned long)filestats.st_size) < 0)
1575 return (cupsdCloseClient(con));
1576
1577 cupsdLogRequest(con, HTTP_OK);
1578 }
1579
1580 if (httpPrintf(HTTP(con), "\r\n") < 0)
1581 return (cupsdCloseClient(con));
1582
1583 con->http.state = HTTP_WAITING;
1584 break;
1585
1586 default :
1587 break; /* Anti-compiler-warning-code */
1588 }
1589 }
1590 }
1591
1592 /*
1593 * Handle any incoming data...
1594 */
1595
1596 switch (con->http.state)
1597 {
1598 case HTTP_PUT_RECV :
1599 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1600 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_%s, "
1601 "con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1602 con->http.fd,
1603 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1604 "CHUNKED" : "LENGTH",
1605 CUPS_LLCAST con->http.data_remaining, con->file);
1606
a4d04587 1607 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
ef416fc2 1608 return (cupsdCloseClient(con));
1609 else if (bytes > 0)
1610 {
1611 con->bytes += bytes;
1612
1613 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1614 "cupsdReadClient: %d writing %d bytes to %d",
1615 con->http.fd, bytes, con->file);
1616
1617 if (write(con->file, line, bytes) < bytes)
1618 {
1619 cupsdLogMessage(CUPSD_LOG_ERROR,
1620 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1621 bytes, con->filename, strerror(errno));
1622
1623 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1624 "cupsdReadClient: Closing data file %d...",
1625 con->file);
1626
1627 close(con->file);
1628 con->file = -1;
1629 unlink(con->filename);
1630 cupsdClearString(&con->filename);
1631
1632 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1633 return (cupsdCloseClient(con));
1634 }
1635 }
1636
1637 if (con->http.state == HTTP_WAITING)
1638 {
1639 /*
1640 * End of file, see how big it is...
1641 */
1642
1643 fstat(con->file, &filestats);
1644
1645 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1646 "cupsdReadClient: %d Closing data file %d, size="
1647 CUPS_LLFMT ".",
1648 con->http.fd, con->file,
1649 CUPS_LLCAST filestats.st_size);
1650
1651 close(con->file);
1652 con->file = -1;
1653
1654 if (filestats.st_size > MaxRequestSize &&
1655 MaxRequestSize > 0)
1656 {
1657 /*
1658 * Request is too big; remove it and send an error...
1659 */
1660
1661 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1662 "cupsdReadClient: %d Removing temp file %s",
1663 con->http.fd, con->filename);
1664 unlink(con->filename);
1665 cupsdClearString(&con->filename);
1666
1667 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1668 return (cupsdCloseClient(con));
1669 }
1670
1671 /*
1672 * Install the configuration file...
1673 */
1674
1675 status = install_conf_file(con);
1676
1677 /*
1678 * Return the status to the client...
1679 */
1680
1681 if (!cupsdSendError(con, status))
1682 return (cupsdCloseClient(con));
1683 }
1684 break;
1685
1686 case HTTP_POST_RECV :
1687 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1688 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_"
1689 "%s, con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1690 con->http.fd,
1691 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1692 "CHUNKED" : "LENGTH",
1693 CUPS_LLCAST con->http.data_remaining, con->file);
1694
1695 if (con->request != NULL)
1696 {
1697 /*
1698 * Grab any request data from the connection...
1699 */
1700
1701 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
1702 {
1703 cupsdLogMessage(CUPSD_LOG_ERROR,
1704 "cupsdReadClient: %d IPP Read Error!",
1705 con->http.fd);
1706
1707 cupsdSendError(con, HTTP_BAD_REQUEST);
1708 return (cupsdCloseClient(con));
1709 }
1710 else if (ipp_state != IPP_DATA)
1711 {
1712 if (con->http.state == HTTP_POST_SEND)
1713 {
1714 cupsdSendError(con, HTTP_BAD_REQUEST);
1715 return (cupsdCloseClient(con));
1716 }
1717
1718 break;
1719 }
1720 else
1721 con->bytes += ippLength(con->request);
1722 }
1723
1724 if (con->file < 0 && con->http.state != HTTP_POST_SEND)
1725 {
1726 /*
1727 * Create a file as needed for the request data...
1728 */
1729
1730 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
1731 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1732
1733 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1734 con->filename, con->file);
1735
1736 if (con->file < 0)
1737 {
1738 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1739 return (cupsdCloseClient(con));
1740 }
1741
1742 fchmod(con->file, 0640);
1743 fchown(con->file, RunUser, Group);
1744 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1745 }
1746
1747 if (con->http.state != HTTP_POST_SEND)
1748 {
a4d04587 1749 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
ef416fc2 1750 return (cupsdCloseClient(con));
1751 else if (bytes > 0)
1752 {
1753 con->bytes += bytes;
1754
1755 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1756 "cupsdReadClient: %d writing %d bytes to %d",
1757 con->http.fd, bytes, con->file);
1758
1759 if (write(con->file, line, bytes) < bytes)
1760 {
1761 cupsdLogMessage(CUPSD_LOG_ERROR,
1762 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1763 bytes, con->filename, strerror(errno));
1764
1765 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1766 "cupsdReadClient: Closing file %d...",
1767 con->file);
1768
1769 close(con->file);
1770 con->file = -1;
1771 unlink(con->filename);
1772 cupsdClearString(&con->filename);
1773
1774 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1775 return (cupsdCloseClient(con));
1776 }
1777 }
1778 else if (con->http.state == HTTP_POST_RECV)
1779 return (1); /* ??? */
1780 else if (con->http.state != HTTP_POST_SEND)
1781 return (cupsdCloseClient(con));
1782 }
1783
1784 if (con->http.state == HTTP_POST_SEND)
1785 {
1786 if (con->file >= 0)
1787 {
1788 fstat(con->file, &filestats);
1789
1790 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1791 "cupsdReadClient: %d Closing data file %d, "
1792 "size=" CUPS_LLFMT ".",
1793 con->http.fd, con->file,
1794 CUPS_LLCAST filestats.st_size);
1795
1796 close(con->file);
1797 con->file = -1;
1798
1799 if (filestats.st_size > MaxRequestSize &&
1800 MaxRequestSize > 0)
1801 {
1802 /*
1803 * Request is too big; remove it and send an error...
1804 */
1805
1806 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1807 "cupsdReadClient: %d Removing temp file %s",
1808 con->http.fd, con->filename);
1809 unlink(con->filename);
1810 cupsdClearString(&con->filename);
1811
1812 if (con->request)
1813 {
1814 /*
1815 * Delete any IPP request data...
1816 */
1817
1818 ippDelete(con->request);
1819 con->request = NULL;
1820 }
1821
1822 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1823 return (cupsdCloseClient(con));
1824 }
1825
1826 if (con->command)
1827 {
1828 if (!cupsdSendCommand(con, con->command, con->options, 0))
1829 {
1830 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1831 return (cupsdCloseClient(con));
1832 }
1833 else
1834 cupsdLogRequest(con, HTTP_OK);
1835 }
1836 }
1837
1838 if (con->request)
1839 return (cupsdProcessIPPRequest(con));
1840 }
1841 break;
1842
1843 default :
1844 break; /* Anti-compiler-warning-code */
1845 }
1846
1847 if (!con->http.keep_alive && con->http.state == HTTP_WAITING)
1848 return (cupsdCloseClient(con));
1849 else
1850 return (1);
1851}
1852
1853
1854/*
1855 * 'cupsdSendCommand()' - Send output from a command via HTTP.
1856 */
1857
1858int /* O - 1 on success, 0 on failure */
1859cupsdSendCommand(
1860 cupsd_client_t *con, /* I - Client connection */
1861 char *command, /* I - Command to run */
1862 char *options, /* I - Command-line options */
1863 int root) /* I - Run as root? */
1864{
1865 int fd; /* Standard input file descriptor */
1866
1867
1868 if (con->filename)
1869 fd = open(con->filename, O_RDONLY);
1870 else
1871 fd = open("/dev/null", O_RDONLY);
1872
1873 if (fd < 0)
1874 {
1875 cupsdLogMessage(CUPSD_LOG_ERROR,
1876 "cupsdSendCommand: %d Unable to open \"%s\" for reading: %s",
1877 con->http.fd, con->filename ? con->filename : "/dev/null",
1878 strerror(errno));
1879 return (0);
1880 }
1881
1882 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
1883
1884 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
1885
1886 close(fd);
1887
1888 cupsdLogMessage(CUPSD_LOG_INFO, "Started \"%s\" (pid=%d)", command,
1889 con->pipe_pid);
1890
1891 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendCommand: %d file=%d",
1892 con->http.fd, con->file);
1893
1894 if (con->pipe_pid == 0)
1895 return (0);
1896
1897 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1898
1899 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1900 "cupsdSendCommand: Adding fd %d to InputSet...", con->file);
1901 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1902 "cupsdSendCommand: Adding fd %d to OutputSet...",
1903 con->http.fd);
1904
1905 FD_SET(con->file, InputSet);
1906 FD_SET(con->http.fd, OutputSet);
1907
1908 con->sent_header = 0;
1909 con->file_ready = 0;
1910 con->got_fields = 0;
1911 con->field_col = 0;
1912
1913 return (1);
1914}
1915
1916
1917/*
1918 * 'cupsdSendError()' - Send an error message via HTTP.
1919 */
1920
1921int /* O - 1 if successful, 0 otherwise */
1922cupsdSendError(cupsd_client_t *con, /* I - Connection */
1923 http_status_t code) /* I - Error code */
1924{
4744bd90 1925#ifdef HAVE_SSL
1926 /*
1927 * Force client to upgrade for authentication if that is how the
1928 * server is configured...
1929 */
1930
1931 if (code == HTTP_UNAUTHORIZED &&
1932 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
1933 strcasecmp(con->http.hostname, "localhost") &&
1934 !con->http.tls)
1935 {
1936 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1937 "cupsdSendError: Encryption before authentication!");
1938 code = HTTP_UPGRADE_REQUIRED;
1939 }
1940#endif /* HAVE_SSL */
1941
ef416fc2 1942 /*
1943 * Put the request in the access_log file...
1944 */
1945
1946 cupsdLogRequest(con, code);
1947
1948 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendError: %d code=%d (%s)",
1949 con->http.fd, code, httpStatus(code));
1950
1951 /*
1952 * To work around bugs in some proxies, don't use Keep-Alive for some
1953 * error messages...
1954 */
1955
1956 if (code >= HTTP_BAD_REQUEST)
1957 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1958
1959 /*
1960 * Send an error message back to the client. If the error code is a
1961 * 400 or 500 series, make sure the message contains some text, too!
1962 */
1963
1964 if (!cupsdSendHeader(con, code, NULL))
1965 return (0);
1966
1967#ifdef HAVE_SSL
1968 if (code == HTTP_UPGRADE_REQUIRED)
1969 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
1970 return (0);
1971
1972 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n") < 0)
1973 return (0);
1974#endif /* HAVE_SSL */
1975
1976 if ((con->http.version >= HTTP_1_1 && !con->http.keep_alive) ||
1977 (code >= HTTP_BAD_REQUEST && code != HTTP_UPGRADE_REQUIRED))
1978 {
1979 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
1980 return (0);
1981 }
1982
1983 if (code >= HTTP_BAD_REQUEST)
1984 {
1985 /*
1986 * Send a human-readable error message.
1987 */
1988
1989 char message[1024]; /* Message for user */
1990 const char *text; /* Status-specific text */
1991
1992 if (code == HTTP_UNAUTHORIZED)
1993 text = _cupsLangString(con->language,
1994 _("Enter your username and password or the "
1995 "root username and password to access this "
1996 "page."));
1997 else if (code == HTTP_UPGRADE_REQUIRED)
1998 text = _cupsLangString(con->language,
1999 _("You must use a https: URL to access this "
2000 "page."));
2001 else
2002 text = "";
2003
2004 snprintf(message, sizeof(message),
2005 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" "
2006 "\"http://www.w3.org/TR/REC-html40/loose.dtd\">\n"
2007 "<HTML>\n"
2008 "<HEAD>\n"
2009 "\t<META HTTP-EQUIV=\"Content-Type\" "
2010 "CONTENT=\"text/html; charset=utf-8\">\n"
2011 "\t<TITLE>%d %s</TITLE>\n"
2012 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2013 "HREF=\"/cups.css\">\n"
2014 "</HEAD>\n"
2015 "<BODY>\n"
2016 "<H1>%d %s</H1>\n"
2017 "<P>%s</P>\n"
2018 "</BODY>\n"
2019 "</HTML>\n",
2020 code, httpStatus(code), code, httpStatus(code), text);
2021
2022 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2023 return (0);
2024 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2025 (int)strlen(message)) < 0)
2026 return (0);
2027 if (httpPrintf(HTTP(con), "\r\n") < 0)
2028 return (0);
2029 if (httpPrintf(HTTP(con), "%s", message) < 0)
2030 return (0);
2031 }
2032 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2033 return (0);
2034
2035 con->http.state = HTTP_WAITING;
2036
2037 return (1);
2038}
2039
2040
ef416fc2 2041/*
2042 * 'cupsdSendHeader()' - Send an HTTP request.
2043 */
2044
2045int /* O - 1 on success, 0 on failure */
2046cupsdSendHeader(cupsd_client_t *con, /* I - Client to send to */
2047 http_status_t code, /* I - HTTP status code */
2048 char *type) /* I - MIME type of document */
2049{
4744bd90 2050 /*
2051 * Send the HTTP status header...
2052 */
2053
ef416fc2 2054 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2055 con->http.version % 100, code, httpStatus(code)) < 0)
2056 return (0);
b423cd4c 2057
2058 if (code == HTTP_CONTINUE)
2059 {
4744bd90 2060 /*
2061 * 100-continue doesn't send any headers...
2062 */
2063
b423cd4c 2064 if (httpPrintf(HTTP(con), "\r\n") < 0)
2065 return (0);
2066 else
2067 return (1);
2068 }
2069
ef416fc2 2070 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2071 return (0);
2072 if (ServerHeader)
2073 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2074 return (0);
2075 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2076 {
2077 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2078 return (0);
2079 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2080 KeepAliveTimeout) < 0)
2081 return (0);
2082 }
2083 if (code == HTTP_METHOD_NOT_ALLOWED)
2084 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST\r\n") < 0)
2085 return (0);
2086
2087 if (code == HTTP_UNAUTHORIZED)
2088 {
2089 int auth_type; /* Authentication type */
2090
2091
2092 if (!con->best || con->best->type == AUTH_NONE)
2093 auth_type = DefaultAuthType;
2094 else
2095 auth_type = con->best->type;
2096
2097 if (auth_type != AUTH_DIGEST)
2098 {
2099 if (httpPrintf(HTTP(con),
2100 "WWW-Authenticate: Basic realm=\"CUPS\"\r\n") < 0)
2101 return (0);
2102 }
2103 else
2104 {
2105 if (httpPrintf(HTTP(con),
2106 "WWW-Authenticate: Digest realm=\"CUPS\", nonce=\"%s\"\r\n",
2107 con->http.hostname) < 0)
2108 return (0);
2109 }
2110 }
2111
e1d6a774 2112 if (con->language && strcmp(con->language->language, "C"))
ef416fc2 2113 {
2114 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2115 con->language->language) < 0)
2116 return (0);
2117 }
2118
e1d6a774 2119 if (type)
ef416fc2 2120 {
2121 if (!strcmp(type, "text/html"))
2122 {
2123 if (httpPrintf(HTTP(con),
2124 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2125 return (0);
2126 }
2127 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2128 return (0);
2129 }
2130
2131 return (1);
2132}
2133
2134
2135/*
2136 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2137 */
2138
2139void
2140cupsdUpdateCGI(void)
2141{
2142 char *ptr, /* Pointer to end of line in buffer */
2143 message[1024]; /* Pointer to message text */
2144 int loglevel; /* Log level for message */
2145
2146
2147 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2148 message, sizeof(message))) != NULL)
2149 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2150 break;
2151
2152 if (ptr == NULL && errno)
2153 {
2154 /*
2155 * Fatal error on pipe - should never happen!
2156 */
2157
2158 cupsdLogMessage(CUPSD_LOG_CRIT,
2159 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2160 strerror(errno));
2161 }
2162}
2163
2164
2165/*
2166 * 'cupsdWriteClient()' - Write data to a client as needed.
2167 */
2168
2169int /* O - 1 if success, 0 if fail */
2170cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2171{
2172 int bytes; /* Number of bytes written */
2173 char buf[16385]; /* Data buffer */
2174 char *bufptr; /* Pointer into buffer */
2175 ipp_state_t ipp_state; /* IPP state value */
2176
2177
2178#ifdef DEBUG
2179 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2180 "cupsdWriteClient(con=%p) %d response=%p, file=%d "
2181 "pipe_pid=%d state=%d",
2182 con, con->http.fd, con->response, con->file, con->pipe_pid,
2183 con->http.state);
2184#endif /* DEBUG */
2185
2186 if (con->http.state != HTTP_GET_SEND &&
2187 con->http.state != HTTP_POST_SEND)
2188 return (1);
2189
2190 if (con->response != NULL)
2191 {
2192 ipp_state = ippWrite(&(con->http), con->response);
2193 bytes = ipp_state != IPP_ERROR && ipp_state != IPP_DATA;
2194 }
2195 else if ((bytes = read(con->file, buf, sizeof(buf) - 1)) > 0)
2196 {
2197 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2198 "cupsdWriteClient: Read %d bytes from file %d...",
2199 bytes, con->file);
2200
2201 if (con->pipe_pid && !con->got_fields)
2202 {
2203 /*
2204 * Inspect the data for Content-Type and other fields.
2205 */
2206
2207 buf[bytes] = '\0';
2208
2209 for (bufptr = buf; !con->got_fields && *bufptr; bufptr ++)
2210 if (*bufptr == '\n')
2211 {
2212 /*
2213 * Send line to client...
2214 */
2215
2216 if (bufptr > buf && bufptr[-1] == '\r')
2217 bufptr[-1] = '\0';
2218 *bufptr++ = '\0';
2219
2220 cupsdLogMessage(CUPSD_LOG_DEBUG2, "Script header: %s", buf);
2221
2222 if (!con->sent_header)
2223 {
2224 /*
2225 * Handle redirection and CGI status codes...
2226 */
2227
2228 if (!strncasecmp(buf, "Location:", 9))
2229 cupsdSendHeader(con, HTTP_SEE_OTHER, NULL);
2230 else if (!strncasecmp(buf, "Status:", 7))
4744bd90 2231 cupsdSendError(con, atoi(buf + 7));
ef416fc2 2232 else
4744bd90 2233 {
ef416fc2 2234 cupsdSendHeader(con, HTTP_OK, NULL);
2235
4744bd90 2236 if (con->http.version == HTTP_1_1)
2237 {
2238 con->http.data_encoding = HTTP_ENCODE_CHUNKED;
ef416fc2 2239
4744bd90 2240 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
2241 return (0);
2242 }
2243 }
ef416fc2 2244
2245 con->sent_header = 1;
2246 }
2247
2248 if (strncasecmp(buf, "Status:", 7))
2249 httpPrintf(HTTP(con), "%s\r\n", buf);
2250
2251 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d %s",
2252 con->http.fd, buf);
2253
2254 /*
2255 * Update buffer...
2256 */
2257
2258 bytes -= (bufptr - buf);
2259 memmove(buf, bufptr, bytes + 1);
2260 bufptr = buf - 1;
2261
2262 /*
2263 * See if the line was empty...
2264 */
2265
2266 if (con->field_col == 0)
2267 con->got_fields = 1;
2268 else
2269 con->field_col = 0;
2270 }
2271 else if (*bufptr != '\r')
2272 con->field_col ++;
2273
2274 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2275 "cupsdWriteClient: %d bytes=%d, got_fields=%d",
2276 con->http.fd, bytes, con->got_fields);
2277
2278 if (bytes > 0 && !con->got_fields)
2279 {
2280 /*
2281 * Remaining text needs to go out...
2282 */
2283
2284 httpPrintf(HTTP(con), "%s", buf);
2285
2286 con->http.activity = time(NULL);
2287 return (1);
2288 }
2289 else if (bytes == 0)
ef416fc2 2290 con->http.activity = time(NULL);
ef416fc2 2291 }
2292
4744bd90 2293 if (bytes > 0)
ef416fc2 2294 {
4744bd90 2295 if (httpWrite2(HTTP(con), buf, bytes) < 0)
2296 {
2297 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2298 "cupsdWriteClient: %d Write of %d bytes failed!",
2299 con->http.fd, bytes);
ef416fc2 2300
4744bd90 2301 cupsdCloseClient(con);
2302 return (0);
2303 }
ef416fc2 2304
4744bd90 2305 con->bytes += bytes;
ef416fc2 2306
4744bd90 2307 if (con->http.state == HTTP_WAITING)
2308 bytes = 0;
2309 }
ef416fc2 2310 }
2311
2312 if (bytes <= 0)
2313 {
2314 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d bytes < 0",
2315 con->http.fd);
2316
2317 cupsdLogRequest(con, HTTP_OK);
2318
2319 httpFlushWrite(HTTP(con));
2320
2321 if (con->http.data_encoding == HTTP_ENCODE_CHUNKED)
2322 {
2323 if (httpPrintf(HTTP(con), "0\r\n\r\n") < 0)
2324 {
2325 cupsdCloseClient(con);
2326 return (0);
2327 }
2328 }
2329
2330 con->http.state = HTTP_WAITING;
2331
2332 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2333 "cupsdWriteClient: Removing fd %d from OutputSet...",
2334 con->http.fd);
2335
2336 FD_CLR(con->http.fd, OutputSet);
2337
2338 if (con->file >= 0)
2339 {
2340 if (FD_ISSET(con->file, InputSet))
2341 {
2342 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2343 "cupsdWriteClient: Removing fd %d from InputSet...",
2344 con->file);
2345 FD_CLR(con->file, InputSet);
2346 }
2347
2348 if (con->pipe_pid)
2349 cupsdEndProcess(con->pipe_pid, 0);
2350
2351 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2352 "cupsdWriteClient: %d Closing data file %d.",
2353 con->http.fd, con->file);
2354
2355 close(con->file);
2356 con->file = -1;
2357 con->pipe_pid = 0;
2358 }
2359
2360 if (con->filename)
2361 {
2362 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2363 "cupsdWriteClient: %d Removing temp file %s",
2364 con->http.fd, con->filename);
2365 unlink(con->filename);
2366 cupsdClearString(&con->filename);
2367 }
2368
2369 if (con->request != NULL)
2370 {
2371 ippDelete(con->request);
2372 con->request = NULL;
2373 }
2374
2375 if (con->response != NULL)
2376 {
2377 ippDelete(con->response);
2378 con->response = NULL;
2379 }
2380
2381 cupsdClearString(&con->command);
2382 cupsdClearString(&con->options);
2383
2384 if (!con->http.keep_alive)
2385 {
2386 cupsdCloseClient(con);
2387 return (0);
2388 }
2389 }
2390 else
2391 {
2392 con->file_ready = 0;
2393
2394 if (con->pipe_pid && !FD_ISSET(con->file, InputSet))
2395 {
2396 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2397 "cupsdWriteClient: Adding fd %d to InputSet...",
2398 con->file);
2399 FD_SET(con->file, InputSet);
2400 }
2401 }
2402
2403 con->http.activity = time(NULL);
2404
2405 return (1);
2406}
2407
2408
e1d6a774 2409/*
2410 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2411 */
2412
2413static int /* O - 1 if modified since */
2414check_if_modified(
2415 cupsd_client_t *con, /* I - Client connection */
2416 struct stat *filestats) /* I - File information */
2417{
2418 char *ptr; /* Pointer into field */
2419 time_t date; /* Time/date value */
2420 off_t size; /* Size/length value */
2421
2422
2423 size = 0;
2424 date = 0;
2425 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
2426
2427 if (*ptr == '\0')
2428 return (1);
2429
2430 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2431 "check_if_modified: %d If-Modified-Since=\"%s\"",
2432 con->http.fd, ptr);
2433
2434 while (*ptr != '\0')
2435 {
2436 while (isspace(*ptr) || *ptr == ';')
2437 ptr ++;
2438
2439 if (strncasecmp(ptr, "length=", 7) == 0)
2440 {
2441 ptr += 7;
2442 size = strtoll(ptr, NULL, 10);
2443
2444 while (isdigit(*ptr))
2445 ptr ++;
2446 }
2447 else if (isalpha(*ptr))
2448 {
2449 date = httpGetDateTime(ptr);
2450 while (*ptr != '\0' && *ptr != ';')
2451 ptr ++;
2452 }
2453 }
2454
2455 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2456 "check_if_modified: %d sizes=" CUPS_LLFMT ","
2457 CUPS_LLFMT " dates=%d,%d",
2458 con->http.fd, CUPS_LLCAST size,
2459 CUPS_LLCAST filestats->st_size, (int)date,
2460 (int)filestats->st_mtime);
2461
2462 return ((size != filestats->st_size && size != 0) ||
2463 (date < filestats->st_mtime && date != 0) ||
2464 (size == 0 && date == 0));
2465}
2466
2467
2468/*
2469 * 'encrypt_client()' - Enable encryption for the client...
2470 */
2471
2472static int /* O - 1 on success, 0 on error */
2473encrypt_client(cupsd_client_t *con) /* I - Client to encrypt */
2474{
2475#ifdef HAVE_LIBSSL
2476 SSL_CTX *context; /* Context for encryption */
2477 SSL *conn; /* Connection for encryption */
2478 unsigned long error; /* Error code */
2479
2480
2481 /*
2482 * Create the SSL context and accept the connection...
2483 */
2484
2485 context = SSL_CTX_new(SSLv23_server_method());
2486
2487 SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
2488 SSL_CTX_use_PrivateKey_file(context, ServerKey, SSL_FILETYPE_PEM);
2489 SSL_CTX_use_certificate_file(context, ServerCertificate, SSL_FILETYPE_PEM);
2490
2491 conn = SSL_new(context);
2492
2493 SSL_set_fd(conn, con->http.fd);
2494 if (SSL_accept(conn) != 1)
2495 {
2496 cupsdLogMessage(CUPSD_LOG_ERROR,
2497 "encrypt_client: Unable to encrypt connection from %s!",
2498 con->http.hostname);
2499
2500 while ((error = ERR_get_error()) != 0)
2501 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2502 ERR_error_string(error, NULL));
2503
2504 SSL_CTX_free(context);
2505 SSL_free(conn);
2506 return (0);
2507 }
2508
2509 cupsdLogMessage(CUPSD_LOG_DEBUG,
2510 "encrypt_client: %d Connection from %s now encrypted.",
2511 con->http.fd, con->http.hostname);
2512
2513 con->http.tls = conn;
2514 return (1);
2515
2516#elif defined(HAVE_GNUTLS)
2517 http_tls_t *conn; /* TLS session object */
2518 int error; /* Error code */
2519 gnutls_certificate_server_credentials *credentials;
2520 /* TLS credentials */
2521
2522
2523 /*
2524 * Verify that we have a certificate...
2525 */
2526
2527 if (access(ServerKey, 0) || access(ServerCertificate, 0))
2528 {
2529 /*
2530 * Nope, make a self-signed certificate...
2531 */
2532
2533 make_certificate();
2534 }
2535
2536 /*
2537 * Create the SSL object and perform the SSL handshake...
2538 */
2539
2540 conn = (http_tls_t *)malloc(sizeof(gnutls_session));
2541
2542 if (conn == NULL)
2543 return (0);
2544
2545 credentials = (gnutls_certificate_server_credentials *)
2546 malloc(sizeof(gnutls_certificate_server_credentials));
2547 if (credentials == NULL)
2548 {
2549 cupsdLogMessage(CUPSD_LOG_ERROR,
2550 "encrypt_client: Unable to encrypt connection from %s!",
2551 con->http.hostname);
2552 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s", strerror(errno));
2553
2554 free(conn);
2555 return (0);
2556 }
2557
2558 gnutls_certificate_allocate_credentials(credentials);
2559 gnutls_certificate_set_x509_key_file(*credentials, ServerCertificate,
2560 ServerKey, GNUTLS_X509_FMT_PEM);
2561
2562 gnutls_init(&(conn->session), GNUTLS_SERVER);
2563 gnutls_set_default_priority(conn->session);
2564 gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
2565 gnutls_transport_set_ptr(conn->session,
2566 (gnutls_transport_ptr)((long)con->http.fd));
2567
2568 error = gnutls_handshake(conn->session);
2569
2570 if (error != GNUTLS_E_SUCCESS)
2571 {
2572 cupsdLogMessage(CUPSD_LOG_ERROR,
2573 "encrypt_client: Unable to encrypt connection from %s!",
2574 con->http.hostname);
2575 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2576 gnutls_strerror(error));
2577
2578 gnutls_deinit(conn->session);
2579 gnutls_certificate_free_credentials(*credentials);
2580 free(conn);
2581 free(credentials);
2582 return (0);
2583 }
2584
2585 cupsdLogMessage(CUPSD_LOG_DEBUG,
2586 "encrypt_client: %d Connection from %s now encrypted.",
2587 con->http.fd, con->http.hostname);
2588
2589 conn->credentials = credentials;
2590 con->http.tls = conn;
2591 return (1);
2592
2593#elif defined(HAVE_CDSASSL)
2594 OSStatus error; /* Error info */
2595 SSLContextRef conn; /* New connection */
2596 CFArrayRef certificatesArray; /* Array containing certificates */
2597 int allowExpired; /* Allow expired certificates? */
2598 int allowAnyRoot; /* Allow any root certificate? */
2599
2600
2601 conn = NULL;
2602 error = SSLNewContext(true, &conn);
2603 allowExpired = 1;
2604 allowAnyRoot = 1;
2605
2606 certificatesArray = get_cdsa_server_certs();
2607
2608 if (!certificatesArray)
2609 {
2610 cupsdLogMessage(CUPSD_LOG_ERROR,
2611 "EncryptClient: Could not find signing key in keychain "
2612 "\"%s\"", ServerCertificate);
2613 error = errSSLBadCert; /* errSSLBadConfiguration is a better choice, but not available on 10.2.x */
2614 }
2615
2616 if (!error)
2617 error = SSLSetIOFuncs(conn, _httpReadCDSA, _httpWriteCDSA);
2618
2619 if (!error)
2620 error = SSLSetProtocolVersion(conn, kSSLProtocol3);
2621
2622 if (!error)
2623 error = SSLSetConnection(conn, (SSLConnectionRef)con->http.fd);
2624
2625 if (!error)
2626 error = SSLSetPeerDomainName(conn, ServerName, strlen(ServerName) + 1);
2627
2628 /* have to do these options before setting server certs */
2629 if (!error && allowExpired)
2630 error = SSLSetAllowsExpiredCerts(conn, true);
2631
2632 if (!error && allowAnyRoot)
2633 error = SSLSetAllowsAnyRoot(conn, true);
2634
2635 if (!error)
2636 error = SSLSetCertificate(conn, certificatesArray);
ef416fc2 2637
e1d6a774 2638 if (certificatesArray)
2639 {
2640 CFRelease(certificatesArray);
2641 certificatesArray = NULL;
2642 }
ef416fc2 2643
e1d6a774 2644 if (!error)
2645 {
2646 /*
2647 * Perform SSL/TLS handshake
2648 */
ef416fc2 2649
e1d6a774 2650 while ((error = SSLHandshake(conn)) == errSSLWouldBlock)
2651 usleep(1000);
2652 }
ef416fc2 2653
e1d6a774 2654 if (error)
2655 {
2656 cupsdLogMessage(CUPSD_LOG_ERROR,
2657 "encrypt_client: Unable to encrypt connection from %s!",
2658 con->http.hostname);
ef416fc2 2659
e1d6a774 2660 cupsdLogMessage(CUPSD_LOG_ERROR,
2661 "encrypt_client: CDSA error code is %d", (int)error);
ef416fc2 2662
e1d6a774 2663 con->http.error = error;
2664 con->http.status = HTTP_ERROR;
ef416fc2 2665
e1d6a774 2666 if (conn != NULL)
2667 SSLDisposeContext(conn);
ef416fc2 2668
e1d6a774 2669 return (0);
ef416fc2 2670 }
2671
e1d6a774 2672 cupsdLogMessage(CUPSD_LOG_DEBUG,
2673 "encrypt_client: %d Connection from %s now encrypted.",
2674 con->http.fd, con->http.hostname);
ef416fc2 2675
e1d6a774 2676 con->http.tls = conn;
2677 return (1);
2678
2679#else
2680 return (0);
2681#endif /* HAVE_LIBSSL */
ef416fc2 2682}
2683
2684
2685#ifdef HAVE_CDSASSL
2686/*
2687 * 'get_cdsa_server_certs()' - Convert a keychain name into the CFArrayRef
2688 * required by SSLSetCertificate.
2689 *
2690 * For now we assumes that there is exactly one SecIdentity in the
2691 * keychain - i.e. there is exactly one matching cert/private key pair.
2692 * In the future we will search a keychain for a SecIdentity matching a
2693 * specific criteria. We also skip the operation of adding additional
2694 * non-signing certs from the keychain to the CFArrayRef.
2695 *
2696 * To create a self-signed certificate for testing use the certtool.
2697 * Executing the following as root will do it:
2698 *
b423cd4c 2699 * certtool c k=/Library/Keychains/System.keychain
ef416fc2 2700 */
2701
2702static CFArrayRef /* O - Array of certificates */
2703get_cdsa_server_certs(void)
2704{
2705 OSStatus err; /* Error info */
2706 SecKeychainRef kcRef; /* Keychain reference */
2707 SecIdentitySearchRef srchRef; /* Search reference */
2708 SecIdentityRef identity; /* Identity */
2709 CFArrayRef ca; /* Certificate array */
2710
2711
2712 kcRef = NULL;
2713 srchRef = NULL;
2714 identity = NULL;
2715 ca = NULL;
2716 err = SecKeychainOpen(ServerCertificate, &kcRef);
2717
2718 if (err)
2719 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot open keychain \"%s\", error %d.",
2720 ServerCertificate, (int)err);
2721 else
2722 {
2723 /*
2724 * Search for "any" identity matching specified key use;
2725 * in this app, we expect there to be exactly one.
2726 */
2727
2728 err = SecIdentitySearchCreate(kcRef, CSSM_KEYUSE_SIGN, &srchRef);
2729
2730 if (err)
2731 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2732 "Cannot find signing key in keychain \"%s\", error %d",
2733 ServerCertificate, (int)err);
2734 else
2735 {
2736 err = SecIdentitySearchCopyNext(srchRef, &identity);
2737
2738 if (err)
2739 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2740 "Cannot find signing key in keychain \"%s\", error %d",
2741 ServerCertificate, (int)err);
2742 else
2743 {
2744 if (CFGetTypeID(identity) != SecIdentityGetTypeID())
2745 cupsdLogMessage(CUPSD_LOG_ERROR,
2746 "SecIdentitySearchCopyNext CFTypeID failure!");
2747 else
2748 {
2749 /*
2750 * Found one. Place it in a CFArray.
2751 * TBD: snag other (non-identity) certs from keychain and add them
2752 * to array as well.
2753 */
2754
b423cd4c 2755 ca = CFArrayCreate(NULL, (const void **)&identity, 1, &kCFTypeArrayCallBacks);
ef416fc2 2756
2757 if (ca == nil)
2758 cupsdLogMessage(CUPSD_LOG_ERROR, "CFArrayCreate error");
2759 }
2760
b423cd4c 2761 CFRelease(identity);
ef416fc2 2762 }
2763
b423cd4c 2764 CFRelease(srchRef);
ef416fc2 2765 }
2766
b423cd4c 2767 CFRelease(kcRef);
ef416fc2 2768 }
2769
2770 return (ca);
2771}
2772#endif /* HAVE_CDSASSL */
2773
2774
2775/*
2776 * 'get_file()' - Get a filename and state info.
2777 */
2778
2779static char * /* O - Real filename */
2780get_file(cupsd_client_t *con, /* I - Client connection */
2781 struct stat *filestats, /* O - File information */
2782 char *filename, /* IO - Filename buffer */
2783 int len) /* I - Buffer length */
2784{
2785 int status; /* Status of filesystem calls */
2786 char *ptr; /* Pointer info filename */
2787 int plen; /* Remaining length after pointer */
2788
2789
2790 /*
2791 * Need to add DocumentRoot global...
2792 */
2793
2794 if (!strncmp(con->uri, "/ppd/", 5))
2795 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
2796 else if (!strncmp(con->uri, "/admin/conf/", 12))
2797 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
2798 else if (!strncmp(con->uri, "/admin/log/", 11))
2799 {
2800 if (!strcmp(con->uri + 11, "access_log") && AccessLog[0] == '/')
2801 strlcpy(filename, AccessLog, len);
2802 else if (!strcmp(con->uri + 11, "error_log") && ErrorLog[0] == '/')
2803 strlcpy(filename, ErrorLog, len);
2804 else if (!strcmp(con->uri + 11, "page_log") && PageLog[0] == '/')
2805 strlcpy(filename, PageLog, len);
2806 else
2807 return (NULL);
2808 }
2809 else if (con->language != NULL)
2810 snprintf(filename, len, "%s/%s%s", DocumentRoot, con->language->language,
2811 con->uri);
2812 else
2813 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2814
2815 if ((ptr = strchr(filename, '?')) != NULL)
2816 *ptr = '\0';
2817
2818 /*
2819 * Grab the status for this language; if there isn't a language-specific file
2820 * then fallback to the default one...
2821 */
2822
2823 if ((status = stat(filename, filestats)) != 0 && con->language != NULL)
2824 {
2825 /*
2826 * Drop the language prefix and try the current directory...
2827 */
2828
2829 if (strncmp(con->uri, "/ppd/", 5) &&
2830 strncmp(con->uri, "/admin/conf/", 12) &&
2831 strncmp(con->uri, "/admin/log/", 11))
2832 {
2833 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
2834
2835 if ((ptr = strchr(filename, '?')) != NULL)
2836 *ptr = '\0';
2837
2838 status = stat(filename, filestats);
2839 }
2840 }
2841
2842 /*
2843 * If we're found a directory, get the index.html file instead...
2844 */
2845
2846 if (!status && S_ISDIR(filestats->st_mode))
2847 {
2848 if (filename[strlen(filename) - 1] != '/')
2849 strlcat(filename, "/", len);
2850
2851 ptr = filename + strlen(filename);
2852 plen = len - (ptr - filename);
2853
2854 strlcpy(ptr, "index.html", plen);
2855 status = stat(filename, filestats);
2856
2857#ifdef HAVE_JAVA
2858 if (status)
2859 {
2860 strlcpy(ptr, "index.class", plen);
2861 status = stat(filename, filestats);
2862 }
2863#endif /* HAVE_JAVA */
2864
2865#ifdef HAVE_PERL
2866 if (status)
2867 {
2868 strlcpy(ptr, "index.pl", plen);
2869 status = stat(filename, filestats);
2870 }
2871#endif /* HAVE_PERL */
2872
2873#ifdef HAVE_PHP
2874 if (status)
2875 {
2876 strlcpy(ptr, "index.php", plen);
2877 status = stat(filename, filestats);
2878 }
2879#endif /* HAVE_PHP */
2880
2881#ifdef HAVE_PYTHON
2882 if (status)
2883 {
2884 strlcpy(ptr, "index.pyc", plen);
2885 status = stat(filename, filestats);
2886 }
2887
2888 if (status)
2889 {
2890 strlcpy(ptr, "index.py", plen);
2891 status = stat(filename, filestats);
2892 }
2893#endif /* HAVE_PYTHON */
2894 }
2895
2896 cupsdLogMessage(CUPSD_LOG_DEBUG2, "get_file: %d filename=%s size=%d",
2897 con->http.fd, filename,
2898 status ? -1 : (int)filestats->st_size);
2899
2900 if (!status)
2901 con->http.data_remaining = (int)filestats->st_size;
2902
2903 if (status)
2904 return (NULL);
2905 else
2906 return (filename);
2907}
2908
2909
2910/*
2911 * 'install_conf_file()' - Install a configuration file.
2912 */
2913
2914static http_status_t /* O - Status */
2915install_conf_file(cupsd_client_t *con) /* I - Connection */
2916{
2917 cups_file_t *in, /* Input file */
2918 *out; /* Output file */
2919 char buffer[1024]; /* Copy buffer */
2920 int bytes; /* Number of bytes */
2921 char conffile[1024], /* Configuration filename */
2922 newfile[1024], /* New config filename */
2923 oldfile[1024]; /* Old config filename */
2924 struct stat confinfo; /* Config file info */
2925
2926
2927 /*
2928 * First construct the filenames...
2929 */
2930
2931 snprintf(conffile, sizeof(conffile), "%s%s", ServerRoot, con->uri + 11);
2932 snprintf(newfile, sizeof(newfile), "%s%s.N", ServerRoot, con->uri + 11);
2933 snprintf(oldfile, sizeof(oldfile), "%s%s.O", ServerRoot, con->uri + 11);
2934
2935 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...", conffile);
2936
2937 /*
2938 * Get the owner, group, and permissions of the configuration file.
2939 * If it doesn't exist, assign it to the User and Group in the
2940 * cupsd.conf file with mode 0640 permissions.
2941 */
2942
2943 if (stat(conffile, &confinfo))
2944 {
2945 confinfo.st_uid = User;
2946 confinfo.st_gid = Group;
2947 confinfo.st_mode = ConfigFilePerm;
2948 }
2949
2950 /*
2951 * Open the request file and new config file...
2952 */
2953
2954 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
2955 {
2956 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\" - %s",
2957 con->filename, strerror(errno));
2958 return (HTTP_SERVER_ERROR);
2959 }
2960
2961 if ((out = cupsFileOpen(newfile, "wb")) == NULL)
2962 {
2963 cupsFileClose(in);
2964 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open config file \"%s\" - %s",
2965 newfile, strerror(errno));
2966 return (HTTP_SERVER_ERROR);
2967 }
2968
2969 fchmod(cupsFileNumber(out), confinfo.st_mode);
2970 fchown(cupsFileNumber(out), confinfo.st_uid, confinfo.st_gid);
2971
2972 /*
2973 * Copy from the request to the new config file...
2974 */
2975
2976 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
2977 if (cupsFileWrite(out, buffer, bytes) < bytes)
2978 {
2979 cupsdLogMessage(CUPSD_LOG_ERROR,
2980 "Unable to copy to config file \"%s\" - %s",
2981 newfile, strerror(errno));
2982
2983 cupsFileClose(in);
2984 cupsFileClose(out);
2985 unlink(newfile);
2986
2987 return (HTTP_SERVER_ERROR);
2988 }
2989
2990 /*
2991 * Close the files...
2992 */
2993
2994 cupsFileClose(in);
2995 if (cupsFileClose(out))
2996 {
2997 cupsdLogMessage(CUPSD_LOG_ERROR,
2998 "Error file closing config file \"%s\" - %s",
2999 newfile, strerror(errno));
3000
3001 unlink(newfile);
3002
3003 return (HTTP_SERVER_ERROR);
3004 }
3005
3006 /*
3007 * Remove the request file...
3008 */
3009
3010 unlink(con->filename);
3011 cupsdClearString(&con->filename);
3012
3013 /*
3014 * Unlink the old backup, rename the current config file to the backup
3015 * filename, and rename the new config file to the config file name...
3016 */
3017
3018 if (unlink(oldfile))
3019 if (errno != ENOENT)
3020 {
3021 cupsdLogMessage(CUPSD_LOG_ERROR,
3022 "Unable to remove backup config file \"%s\" - %s",
3023 oldfile, strerror(errno));
3024
3025 unlink(newfile);
3026
3027 return (HTTP_SERVER_ERROR);
3028 }
3029
3030 if (rename(conffile, oldfile))
3031 if (errno != ENOENT)
3032 {
3033 cupsdLogMessage(CUPSD_LOG_ERROR,
3034 "Unable to rename old config file \"%s\" - %s",
3035 conffile, strerror(errno));
3036
3037 unlink(newfile);
3038
3039 return (HTTP_SERVER_ERROR);
3040 }
3041
3042 if (rename(newfile, conffile))
3043 {
3044 cupsdLogMessage(CUPSD_LOG_ERROR,
3045 "Unable to rename new config file \"%s\" - %s",
3046 newfile, strerror(errno));
3047
3048 rename(oldfile, conffile);
3049 unlink(newfile);
3050
3051 return (HTTP_SERVER_ERROR);
3052 }
3053
3054 /*
3055 * If the cupsd.conf file was updated, set the NeedReload flag...
3056 */
3057
3058 if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
3059 NeedReload = RELOAD_CUPSD;
3060 else
3061 NeedReload = RELOAD_ALL;
3062
3063 ReloadTime = time(NULL);
3064
3065 /*
3066 * Return that the file was created successfully...
3067 */
3068
3069 return (HTTP_CREATED);
3070}
3071
3072
e1d6a774 3073/*
3074 * 'is_cgi()' - Is the resource a CGI script/program?
3075 */
3076
3077static int /* O - 1 = CGI, 0 = file */
3078is_cgi(cupsd_client_t *con, /* I - Client connection */
3079 const char *filename, /* I - Real filename */
3080 struct stat *filestats, /* I - File information */
3081 mime_type_t *type) /* I - MIME type */
3082{
3083 const char *options; /* Options on URL */
3084
3085
3086 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3087 "is_cgi(con=%p, filename=\"%s\", filestats=%p, type=%s/%s)\n",
3088 con, filename, filestats, type ? type->super : "unknown",
3089 type ? type->type : "unknown");
3090
3091 /*
3092 * Get the options, if any...
3093 */
3094
3095 if ((options = strchr(con->uri, '?')) != NULL)
3096 options ++;
3097
3098 /*
3099 * Check for known types...
3100 */
3101
3102 if (!type || strcasecmp(type->super, "application"))
3103 {
3104 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3105 return (0);
3106 }
3107
3108 if (!strcasecmp(type->type, "x-httpd-cgi") &&
3109 (filestats->st_mode & 0111))
3110 {
3111 /*
3112 * "application/x-httpd-cgi" is a CGI script.
3113 */
3114
3115 cupsdSetString(&con->command, filename);
3116
3117 filename = strrchr(filename, '/') + 1; /* Filename always absolute */
3118
3119 cupsdSetString(&con->options, options);
3120
3121 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3122 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3123 con->command, con->options);
3124
3125 return (1);
3126 }
3127#ifdef HAVE_JAVA
3128 else if (!strcasecmp(type->type, "x-httpd-java"))
3129 {
3130 /*
3131 * "application/x-httpd-java" is a Java servlet.
3132 */
3133
3134 cupsdSetString(&con->command, CUPS_JAVA);
3135
3136 if (options)
3137 cupsdSetStringf(&con->options, "%s %s", filename, options);
3138 else
3139 cupsdSetString(&con->options, filename);
3140
3141 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3142 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3143 con->command, con->options);
3144
3145 return (1);
3146 }
3147#endif /* HAVE_JAVA */
3148#ifdef HAVE_PERL
3149 else if (!strcasecmp(type->type, "x-httpd-perl"))
3150 {
3151 /*
3152 * "application/x-httpd-perl" is a Perl page.
3153 */
3154
3155 cupsdSetString(&con->command, CUPS_PERL);
3156
3157 if (options)
3158 cupsdSetStringf(&con->options, "%s %s", filename, options);
3159 else
3160 cupsdSetString(&con->options, filename);
3161
3162 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3163 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3164 con->command, con->options);
3165
3166 return (1);
3167 }
3168#endif /* HAVE_PERL */
3169#ifdef HAVE_PHP
3170 else if (!strcasecmp(type->type, "x-httpd-php"))
3171 {
3172 /*
3173 * "application/x-httpd-php" is a PHP page.
3174 */
3175
3176 cupsdSetString(&con->command, CUPS_PHP);
3177
3178 if (options)
3179 cupsdSetStringf(&con->options, "%s %s", filename, options);
3180 else
3181 cupsdSetString(&con->options, filename);
3182
3183 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3184 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3185 con->command, con->options);
3186
3187 return (1);
3188 }
3189#endif /* HAVE_PHP */
3190#ifdef HAVE_PYTHON
3191 else if (!strcasecmp(type->type, "x-httpd-python"))
3192 {
3193 /*
3194 * "application/x-httpd-python" is a Python page.
3195 */
3196
3197 cupsdSetString(&con->command, CUPS_PYTHON);
3198
3199 if (options)
3200 cupsdSetStringf(&con->options, "%s %s", filename, options);
3201 else
3202 cupsdSetString(&con->options, filename);
3203
3204 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3205 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3206 con->command, con->options);
3207
3208 return (1);
3209 }
3210#endif /* HAVE_PYTHON */
3211
3212 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3213
3214 return (0);
3215}
3216
3217
ef416fc2 3218/*
3219 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3220 */
3221
3222static int /* O - 0 if relative, 1 if absolute */
3223is_path_absolute(const char *path) /* I - Input path */
3224{
3225 /*
3226 * Check for a leading slash...
3227 */
3228
3229 if (path[0] != '/')
3230 return (0);
3231
3232 /*
3233 * Check for "/.." in the path...
3234 */
3235
3236 while ((path = strstr(path, "/..")) != NULL)
3237 {
3238 if (!path[3] || path[3] == '/')
3239 return (0);
3240
3241 path ++;
3242 }
3243
3244 /*
3245 * If we haven't found any relative paths, return 1 indicating an
3246 * absolute path...
3247 */
3248
3249 return (1);
3250}
3251
3252
4744bd90 3253#ifdef HAVE_GNUTLS
3254/*
3255 * 'make_certificate()' - Make a self-signed SSL/TLS certificate.
3256 */
3257
3258static void
3259make_certificate(void)
3260{
3261 gnutls_x509_crt crt; /* Self-signed certificate */
3262 gnutls_x509_privkey key; /* Encryption key */
3263 cups_lang_t *language; /* Default language info */
3264 cups_file_t *fp; /* Key/cert file */
3265 unsigned char buffer[8192]; /* Buffer for x509 data */
3266 size_t bytes; /* Number of bytes of data */
3267 unsigned char serial[4]; /* Serial number buffer */
3268 time_t curtime; /* Current time */
3269 int result; /* Result of GNU TLS calls */
3270
3271
3272 /*
3273 * Create the encryption key...
3274 */
3275
3276 cupsdLogMessage(CUPSD_LOG_INFO, "Generating server key...");
3277
3278 gnutls_x509_privkey_init(&key);
3279 gnutls_x509_privkey_generate(key, GNUTLS_PK_RSA, 2048, 0);
3280
3281 /*
3282 * Save it...
3283 */
3284
3285 bytes = sizeof(buffer);
3286
3287 if ((result = gnutls_x509_privkey_export(key, GNUTLS_X509_FMT_PEM,
3288 buffer, &bytes)) < 0)
3289 {
3290 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to export server key - %s",
3291 gnutls_strerror(result));
3292 gnutls_x509_privkey_deinit(key);
3293 return;
3294 }
3295 else if ((fp = cupsFileOpen(ServerKey, "w")) != NULL)
3296 {
3297 cupsFileWrite(fp, (char *)buffer, bytes);
3298 cupsFileClose(fp);
3299
3300 cupsdLogMessage(CUPSD_LOG_INFO, "Created server key file \"%s\"...",
3301 ServerKey);
3302 }
3303 else
3304 {
3305 cupsdLogMessage(CUPSD_LOG_ERROR,
3306 "Unable to create server key file \"%s\" - %s",
3307 ServerKey, strerror(errno));
3308 gnutls_x509_privkey_deinit(key);
3309 return;
3310 }
3311
3312 /*
3313 * Create the self-signed certificate...
3314 */
3315
3316 cupsdLogMessage(CUPSD_LOG_INFO, "Generating self-signed certificate...");
3317
3318 language = cupsLangDefault();
3319 curtime = time(NULL);
3320 serial[0] = curtime >> 24;
3321 serial[1] = curtime >> 16;
3322 serial[2] = curtime >> 8;
3323 serial[3] = curtime;
3324
3325 gnutls_x509_crt_init(&crt);
3326 if (strlen(language->language) == 5)
3327 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3328 language->language + 3, 2);
3329 else
3330 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3331 "US", 2);
3332 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COMMON_NAME, 0,
3333 ServerName, strlen(ServerName));
3334 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
3335 ServerName, strlen(ServerName));
3336 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME,
3337 0, "Unknown", 7);
3338 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0,
3339 "Unknown", 7);
3340 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_LOCALITY_NAME, 0,
3341 "Unknown", 7);
3342 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_PKCS9_EMAIL, 0,
3343 ServerAdmin, strlen(ServerAdmin));
3344 gnutls_x509_crt_set_key(crt, key);
3345 gnutls_x509_crt_set_serial(crt, serial, sizeof(serial));
3346 gnutls_x509_crt_set_activation_time(crt, curtime);
3347 gnutls_x509_crt_set_expiration_time(crt, curtime + 10 * 365 * 86400);
3348 gnutls_x509_crt_set_ca_status(crt, 0);
3349 gnutls_x509_crt_set_subject_alternative_name(crt, GNUTLS_SAN_DNSNAME,
3350 ServerName);
3351 gnutls_x509_crt_set_key_purpose_oid(crt, GNUTLS_KP_TLS_WWW_SERVER, 0);
3352 gnutls_x509_crt_set_key_usage(crt, GNUTLS_KEY_KEY_ENCIPHERMENT);
3353 gnutls_x509_crt_set_version(crt, 3);
3354
3355 bytes = sizeof(buffer);
3356 if (gnutls_x509_crt_get_key_id(crt, 0, buffer, &bytes) >= 0)
3357 gnutls_x509_crt_set_subject_key_id(crt, buffer, bytes);
3358
3359 gnutls_x509_crt_sign(crt, crt, key);
3360
3361 /*
3362 * Save it...
3363 */
3364
3365 bytes = sizeof(buffer);
3366 if ((result = gnutls_x509_crt_export(crt, GNUTLS_X509_FMT_PEM,
3367 buffer, &bytes)) < 0)
3368 cupsdLogMessage(CUPSD_LOG_ERROR,
3369 "Unable to export server certificate - %s",
3370 gnutls_strerror(result));
3371 else if ((fp = cupsFileOpen(ServerCertificate, "w")) != NULL)
3372 {
3373 cupsFileWrite(fp, (char *)buffer, bytes);
3374 cupsFileClose(fp);
3375
3376 cupsdLogMessage(CUPSD_LOG_INFO,
3377 "Created 10-year server certificate file \"%s\"...",
3378 ServerCertificate);
3379 }
3380 else
3381 cupsdLogMessage(CUPSD_LOG_ERROR,
3382 "Unable to create server certificate file \"%s\" - %s",
3383 ServerCertificate, strerror(errno));
3384
3385 /*
3386 * Cleanup...
3387 */
3388
3389 gnutls_x509_crt_deinit(crt);
3390 gnutls_x509_privkey_deinit(key);
3391}
3392#endif /* HAVE_GNUTLS */
3393
3394
ef416fc2 3395/*
3396 * 'pipe_command()' - Pipe the output of a command to the remote client.
3397 */
3398
3399static int /* O - Process ID */
3400pipe_command(cupsd_client_t *con, /* I - Client connection */
3401 int infile, /* I - Standard input for command */
3402 int *outfile, /* O - Standard output for command */
3403 char *command, /* I - Command to run */
3404 char *options, /* I - Options for command */
3405 int root) /* I - Run as root? */
3406{
3407 int i; /* Looping var */
3408 int pid; /* Process ID */
b423cd4c 3409 char *commptr, /* Command string pointer */
3410 commch; /* Command string character */
ef416fc2 3411 char *uriptr; /* URI string pointer */
3412 int fds[2]; /* Pipe FDs */
3413 int argc; /* Number of arguments */
3414 int envc; /* Number of environment variables */
3415 char argbuf[10240], /* Argument buffer */
3416 *argv[100], /* Argument strings */
b423cd4c 3417 *envp[MAX_ENV + 17]; /* Environment variables */
ef416fc2 3418 char content_length[1024], /* CONTENT_LENGTH environment variable */
3419 content_type[1024], /* CONTENT_TYPE environment variable */
3420 http_cookie[32768], /* HTTP_COOKIE environment variable */
3421 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3422 lang[1024], /* LANG environment variable */
b423cd4c 3423 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 3424 *query_string, /* QUERY_STRING env variable */
3425 remote_addr[1024], /* REMOTE_ADDR environment variable */
3426 remote_host[1024], /* REMOTE_HOST environment variable */
3427 remote_user[1024], /* REMOTE_USER environment variable */
3428 script_name[1024], /* SCRIPT_NAME environment variable */
3429 server_name[1024], /* SERVER_NAME environment variable */
3430 server_port[1024]; /* SERVER_PORT environment variable */
3431
3432
3433 /*
3434 * Parse a copy of the options string, which is of the form:
3435 *
b423cd4c 3436 * argument+argument+argument
3437 * ?argument+argument+argument
3438 * param=value&param=value
3439 * ?param=value&param=value
3440 * /name?argument+argument+argument
3441 * /name?param=value&param=value
ef416fc2 3442 *
3443 * If the string contains an "=" character after the initial name,
3444 * then we treat it as a HTTP GET form request and make a copy of
3445 * the remaining string for the environment variable.
3446 *
3447 * The string is always parsed out as command-line arguments, to
3448 * be consistent with Apache...
3449 */
3450
3451 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3452 "pipe_command: command=\"%s\", options=\"%s\"",
3453 command, options);
3454
b423cd4c 3455 argv[0] = command;
ef416fc2 3456 query_string = NULL;
3457
b423cd4c 3458 if (options)
3459 strlcpy(argbuf, options, sizeof(argbuf));
3460 else
3461 argbuf[0] = '\0';
3462
3463 if (argbuf[0] == '/')
ef416fc2 3464 {
3465 /*
b423cd4c 3466 * Found some trailing path information, set PATH_INFO...
ef416fc2 3467 */
3468
b423cd4c 3469 if ((commptr = strchr(argbuf, '?')) == NULL)
3470 commptr = argbuf + strlen(argbuf);
ef416fc2 3471
b423cd4c 3472 commch = *commptr;
3473 *commptr = '\0';
3474 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
3475 *commptr = commch;
3476 }
3477 else
3478 {
3479 commptr = argbuf;
3480 path_info[0] = '\0';
3481 }
ef416fc2 3482
b423cd4c 3483 if (*commptr == '?' && con->operation == HTTP_GET)
3484 {
3485 commptr ++;
3486 cupsdSetStringf(&query_string, "QUERY_STRING=%s", commptr);
3487 }
ef416fc2 3488
b423cd4c 3489 argc = 1;
ef416fc2 3490
b423cd4c 3491 if (*commptr)
3492 {
3493 argv[argc ++] = commptr;
ef416fc2 3494
b423cd4c 3495 for (; *commptr && argc < 99; commptr ++)
3496 {
ef416fc2 3497 /*
b423cd4c 3498 * Break arguments whenever we see a + or space...
ef416fc2 3499 */
3500
b423cd4c 3501 if (*commptr == ' ' || *commptr == '+')
3502 {
3503 while (*commptr == ' ' || *commptr == '+')
3504 *commptr++ = '\0';
ef416fc2 3505
b423cd4c 3506 /*
3507 * If we don't have a blank string, save it as another argument...
3508 */
ef416fc2 3509
b423cd4c 3510 if (*commptr)
3511 {
3512 argv[argc] = commptr;
3513 argc ++;
3514 }
3515 else
3516 break;
3517 }
3518 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
3519 isxdigit(commptr[2] & 255))
3520 {
3521 /*
3522 * Convert the %xx notation to the individual character.
3523 */
ef416fc2 3524
b423cd4c 3525 if (commptr[1] >= '0' && commptr[1] <= '9')
3526 *commptr = (commptr[1] - '0') << 4;
3527 else
3528 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
ef416fc2 3529
b423cd4c 3530 if (commptr[2] >= '0' && commptr[2] <= '9')
3531 *commptr |= commptr[2] - '0';
3532 else
3533 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 3534
b423cd4c 3535 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 3536
b423cd4c 3537 /*
3538 * Check for a %00 and break if that is the case...
3539 */
ef416fc2 3540
b423cd4c 3541 if (!*commptr)
3542 break;
3543 }
ef416fc2 3544 }
3545 }
3546
3547 argv[argc] = NULL;
3548
ef416fc2 3549 /*
3550 * Setup the environment variables as needed...
3551 */
3552
3553 if (con->language)
3554 snprintf(lang, sizeof(lang), "LANG=%s.UTF-8", con->language->language);
3555 else
3556 strcpy(lang, "LANG=C");
3557
3558 strcpy(remote_addr, "REMOTE_ADDR=");
3559 httpAddrString(con->http.hostaddr, remote_addr + 12,
3560 sizeof(remote_addr) - 12);
3561
3562 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
3563 con->http.hostname);
3564
3565 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
3566 if ((uriptr = strchr(script_name, '?')) != NULL)
3567 *uriptr = '\0';
3568
3569 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
3570
3571 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
3572 con->servername);
3573
3574 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
3575
3576 envp[envc ++] = lang;
3577 envp[envc ++] = "REDIRECT_STATUS=1";
3578 envp[envc ++] = server_name;
3579 envp[envc ++] = server_port;
3580 envp[envc ++] = remote_addr;
3581 envp[envc ++] = remote_host;
3582 envp[envc ++] = script_name;
3583
b423cd4c 3584 if (path_info[0])
3585 envp[envc ++] = path_info;
3586
ef416fc2 3587 if (con->username[0])
3588 {
3589 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
3590
3591 envp[envc ++] = remote_user;
3592 }
3593
3594 if (con->http.version == HTTP_1_1)
3595 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
3596 else if (con->http.version == HTTP_1_0)
3597 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
3598 else
3599 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
3600
3601 if (con->http.cookie)
3602 {
3603 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
3604 con->http.cookie);
3605 envp[envc ++] = http_cookie;
3606 }
3607
3608 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
3609 {
3610 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
3611 con->http.fields[HTTP_FIELD_USER_AGENT]);
3612 envp[envc ++] = http_user_agent;
3613 }
3614
3615 if (con->operation == HTTP_GET)
3616 {
3617 for (i = 0; i < argc; i ++)
3618 cupsdLogMessage(CUPSD_LOG_DEBUG2, "argv[%d] = \"%s\"", i, argv[i]);
3619
3620 envp[envc ++] = "REQUEST_METHOD=GET";
3621
3622 if (query_string)
3623 {
3624 /*
3625 * Add GET form variables after ?...
3626 */
3627
3628 envp[envc ++] = query_string;
3629 }
3630 }
3631 else
3632 {
e1d6a774 3633 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
3634 CUPS_LLCAST con->bytes);
ef416fc2 3635 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
3636 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
3637
3638 envp[envc ++] = "REQUEST_METHOD=POST";
3639 envp[envc ++] = content_length;
3640 envp[envc ++] = content_type;
3641 }
3642
3643 /*
3644 * Tell the CGI if we are using encryption...
3645 */
3646
3647 if (con->http.encryption == HTTP_ENCRYPT_ALWAYS)
3648 envp[envc ++] = "HTTPS=ON";
3649
3650 /*
3651 * Terminate the environment array...
3652 */
3653
3654 envp[envc] = NULL;
3655
3656 if (LogLevel == CUPSD_LOG_DEBUG2)
3657 {
3658 for (i = 0; i < argc; i ++)
3659 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3660 "pipe_command: argv[%d] = \"%s\"", i, argv[i]);
3661 for (i = 0; i < envc; i ++)
3662 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3663 "pipe_command: envp[%d] = \"%s\"", i, envp[i]);
3664 }
3665
3666 /*
3667 * Create a pipe for the output...
3668 */
3669
3670 if (cupsdOpenPipe(fds))
3671 {
3672 cupsdClearString(&query_string);
3673
3674 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create pipes for CGI %s - %s",
3675 argv[0], strerror(errno));
3676 return (0);
3677 }
3678
3679 /*
3680 * Then execute the command...
3681 */
3682
3683 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
3684 -1, root, &pid) < 0)
3685 {
3686 /*
3687 * Error - can't fork!
3688 */
3689
3690 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to fork for CGI %s - %s", argv[0],
3691 strerror(errno));
3692
3693 cupsdClosePipe(fds);
3694 pid = 0;
3695 }
3696 else
3697 {
3698 /*
3699 * Fork successful - return the PID...
3700 */
3701
3702 if (con->username[0])
3703 cupsdAddCert(pid, con->username);
3704
3705 cupsdLogMessage(CUPSD_LOG_DEBUG, "CGI %s started - PID = %d", command, pid);
3706
3707 *outfile = fds[0];
3708 close(fds[1]);
3709 }
3710
3711 cupsdClearString(&query_string);
3712
3713 return (pid);
3714}
3715
3716
3717/*
e1d6a774 3718 * 'send_file()' - Send a file via HTTP.
3719 */
3720
3721static int /* O - 0 on failure, 1 on success */
3722send_file(cupsd_client_t *con, /* I - Client connection */
3723 http_status_t code, /* I - HTTP status */
3724 char *filename, /* I - Filename */
3725 char *type, /* I - File type */
3726 struct stat *filestats) /* O - File information */
3727{
3728 con->file = open(filename, O_RDONLY);
3729
3730 cupsdLogMessage(CUPSD_LOG_DEBUG, "send_file: %d file=%d", con->http.fd,
3731 con->file);
3732
3733 if (con->file < 0)
3734 return (0);
3735
3736 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
3737
3738 con->pipe_pid = 0;
3739
3740 if (!cupsdSendHeader(con, code, type))
3741 return (0);
3742
3743 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
3744 httpGetDateString(filestats->st_mtime)) < 0)
3745 return (0);
3746 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
3747 CUPS_LLCAST filestats->st_size) < 0)
3748 return (0);
3749 if (httpPrintf(HTTP(con), "\r\n") < 0)
3750 return (0);
3751
3752 con->http.data_encoding = HTTP_ENCODE_LENGTH;
3753 con->http.data_remaining = filestats->st_size;
3754
3755 if (con->http.data_remaining <= INT_MAX)
3756 con->http._data_remaining = con->http.data_remaining;
3757 else
3758 con->http._data_remaining = INT_MAX;
3759
3760 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3761 "send_file: Adding fd %d to OutputSet...", con->http.fd);
3762
3763 FD_SET(con->http.fd, OutputSet);
3764
3765 return (1);
3766}
3767
3768
3769/*
3770 * End of "$Id: client.c 5305 2006-03-18 03:05:12Z mike $".
ef416fc2 3771 */
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