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[thirdparty/cups.git] / scheduler / client.c
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ef416fc2 1/*
b86bc4cf 2 * "$Id: client.c 6247 2007-02-07 20:54:37Z 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.
d09495fa 29 * cupsdFlushHeader() - Flush the header fields to the client.
ef416fc2 30 * cupsdReadClient() - Read data from a client.
31 * cupsdSendCommand() - Send output from a command via HTTP.
32 * cupsdSendError() - Send an error message via HTTP.
ef416fc2 33 * cupsdSendHeader() - Send an HTTP request.
34 * cupsdUpdateCGI() - Read status messages from CGI scripts and programs.
35 * cupsdWriteClient() - Write data to a client as needed.
36 * check_if_modified() - Decode an "If-Modified-Since" line.
e1d6a774 37 * encrypt_client() - Enable encryption for the client...
b86bc4cf 38 * get_cdsa_certificate() - Convert a keychain name into the CFArrayRef
ef416fc2 39 * required by SSLSetCertificate.
40 * get_file() - Get a filename and state info.
41 * install_conf_file() - Install a configuration file.
e1d6a774 42 * is_cgi() - Is the resource a CGI script/program?
ef416fc2 43 * is_path_absolute() - Is a path absolute and free of relative elements.
4744bd90 44 * make_certificate() - Make a self-signed SSL/TLS certificate.
ef416fc2 45 * pipe_command() - Pipe the output of a command to the remote client.
a74454a7 46 * write_file() - Send a file via HTTP.
ef416fc2 47 */
48
49/*
50 * Include necessary headers...
51 */
52
53#include <cups/http-private.h>
54#include "cupsd.h"
55
56#ifdef HAVE_CDSASSL
57# include <Security/Security.h>
b86bc4cf 58# ifdef HAVE_SECIDENTITYSEARCHPRIV_H
59# include <Security/SecIdentitySearchPriv.h>
60# else /* Declare prototype for function in that header... */
61extern OSStatus SecIdentitySearchCreateWithPolicy(SecPolicyRef policy,
62 CFStringRef idString, CSSM_KEYUSE keyUsage,
63 CFTypeRef keychainOrArray,
64 Boolean returnOnlyValidIdentities,
65 SecIdentitySearchRef* searchRef);
66# endif /* HAVE_SECIDENTITYSEARCHPRIV_H */
67# ifdef HAVE_SECPOLICYPRIV_H
68# include <Security/SecPolicyPriv.h>
69# else /* Declare prototype for function in that header... */
70extern OSStatus SecPolicySetValue(SecPolicyRef policyRef,
71 const CSSM_DATA *value);
72# endif /* HAVE_SECPOLICYPRIV_H */
ed486911 73# ifdef HAVE_SECBASEPRIV_H
74# include <Security/SecBasePriv.h>
b86bc4cf 75# else /* Declare prototype for function in that header... */
76extern const char *cssmErrorString(int error);
ed486911 77# endif /* HAVE_SECBASEPRIV_H */
ef416fc2 78#endif /* HAVE_CDSASSL */
b86bc4cf 79
4744bd90 80#ifdef HAVE_GNUTLS
81# include <gnutls/x509.h>
82#endif /* HAVE_GNUTLS */
ef416fc2 83
84
85/*
86 * Local functions...
87 */
88
89static int check_if_modified(cupsd_client_t *con,
90 struct stat *filestats);
80ca4592 91#ifdef HAVE_SSL
e1d6a774 92static int encrypt_client(cupsd_client_t *con);
80ca4592 93#endif /* HAVE_SSL */
ef416fc2 94#ifdef HAVE_CDSASSL
b86bc4cf 95static CFArrayRef get_cdsa_certificate(cupsd_client_t *con);
ef416fc2 96#endif /* HAVE_CDSASSL */
97static char *get_file(cupsd_client_t *con, struct stat *filestats,
98 char *filename, int len);
99static http_status_t install_conf_file(cupsd_client_t *con);
e1d6a774 100static int is_cgi(cupsd_client_t *con, const char *filename,
101 struct stat *filestats, mime_type_t *type);
ef416fc2 102static int is_path_absolute(const char *path);
8ca02f3c 103#ifdef HAVE_SSL
b86bc4cf 104static int make_certificate(cupsd_client_t *con);
8ca02f3c 105#endif /* HAVE_SSL */
ef416fc2 106static int pipe_command(cupsd_client_t *con, int infile, int *outfile,
107 char *command, char *options, int root);
a74454a7 108static int write_file(cupsd_client_t *con, http_status_t code,
109 char *filename, char *type,
110 struct stat *filestats);
ef416fc2 111
112
113/*
114 * 'cupsdAcceptClient()' - Accept a new client.
115 */
116
117void
118cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
119{
ef416fc2 120 int count; /* Count of connections on a host */
121 int val; /* Parameter value */
bd7854cb 122 cupsd_client_t *con, /* New client pointer */
123 *tempcon; /* Temporary client pointer */
ef416fc2 124 http_addrlist_t *addrlist, /* List of adddresses for host */
125 *addr; /* Current address */
126 socklen_t addrlen; /* Length of address */
127 char *hostname; /* Hostname for address */
128 http_addr_t temp; /* Temporary address variable */
129 static time_t last_dos = 0; /* Time of last DoS attack */
130
131
132 cupsdLogMessage(CUPSD_LOG_DEBUG2,
bd7854cb 133 "cupsdAcceptClient(lis=%p) %d Clients = %d",
134 lis, lis->fd, cupsArrayCount(Clients));
ef416fc2 135
136 /*
137 * Make sure we don't have a full set of clients already...
138 */
139
bd7854cb 140 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 141 return;
142
143 /*
144 * Get a pointer to the next available client...
145 */
146
bd7854cb 147 if (!Clients)
148 Clients = cupsArrayNew(NULL, NULL);
149
150 if (!Clients)
151 return;
152
153 con = calloc(1, sizeof(cupsd_client_t));
ef416fc2 154
ef416fc2 155 con->http.activity = time(NULL);
156 con->file = -1;
157 con->http.hostaddr = &(con->clientaddr);
158
159 /*
160 * Accept the client and get the remote address...
161 */
162
163 addrlen = sizeof(http_addr_t);
164
165 if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
166 &addrlen)) < 0)
167 {
168 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to accept client connection - %s.",
169 strerror(errno));
bd7854cb 170 free(con);
ef416fc2 171 return;
172 }
173
174#ifdef AF_INET6
175 if (lis->address.addr.sa_family == AF_INET6)
176 {
177 /*
178 * Save the connected port number...
179 */
180
181 con->http.hostaddr->ipv6.sin6_port = lis->address.ipv6.sin6_port;
182
183 /*
184 * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
185 * can more easily use...
186 */
187
188 if (con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
189 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
190 ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
191 con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
192 }
193 else
194#endif /* AF_INET6 */
195 if (lis->address.addr.sa_family == AF_INET)
196 con->http.hostaddr->ipv4.sin_port = lis->address.ipv4.sin_port;
197
198 /*
199 * Check the number of clients on the same address...
200 */
201
bd7854cb 202 for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
203 tempcon;
204 tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
205 if (httpAddrEqual(tempcon->http.hostaddr, con->http.hostaddr))
ef416fc2 206 {
207 count ++;
208 if (count >= MaxClientsPerHost)
209 break;
210 }
211
212 if (count >= MaxClientsPerHost)
213 {
214 if ((time(NULL) - last_dos) >= 60)
215 {
216 last_dos = time(NULL);
217 cupsdLogMessage(CUPSD_LOG_WARN,
bd7854cb 218 "Possible DoS attack - more than %d clients connecting "
219 "from %s!",
220 MaxClientsPerHost, tempcon->http.hostname);
ef416fc2 221 }
222
223#ifdef WIN32
224 closesocket(con->http.fd);
225#else
226 close(con->http.fd);
227#endif /* WIN32 */
228
bd7854cb 229 free(con);
ef416fc2 230 return;
231 }
232
233 /*
234 * Get the hostname or format the IP address as needed...
235 */
236
237 if (httpAddrLocalhost(con->http.hostaddr))
238 {
239 /*
240 * Map accesses from the loopback interface to "localhost"...
241 */
242
243 strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
244 hostname = con->http.hostname;
245 }
246 else
247 {
248 /*
249 * Map accesses from the same host to the server name.
250 */
251
252 for (addr = ServerAddrs; addr; addr = addr->next)
253 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
254 break;
255
256 if (addr)
257 {
258 strlcpy(con->http.hostname, ServerName, sizeof(con->http.hostname));
259 hostname = con->http.hostname;
260 }
261 else if (HostNameLookups)
262 hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
263 sizeof(con->http.hostname));
264 else
265 {
266 hostname = NULL;
267 httpAddrString(con->http.hostaddr, con->http.hostname,
268 sizeof(con->http.hostname));
269 }
270 }
271
272 if (hostname == NULL && HostNameLookups == 2)
273 {
274 /*
275 * Can't have an unresolved IP address with double-lookups enabled...
276 */
277
278 cupsdLogMessage(CUPSD_LOG_DEBUG2,
279 "cupsdAcceptClient: Closing connection %d...",
280 con->http.fd);
281
282#ifdef WIN32
283 closesocket(con->http.fd);
284#else
285 close(con->http.fd);
286#endif /* WIN32 */
287
288 cupsdLogMessage(CUPSD_LOG_WARN,
289 "Name lookup failed - connection from %s closed!",
290 con->http.hostname);
bd7854cb 291
292 free(con);
ef416fc2 293 return;
294 }
295
296 if (HostNameLookups == 2)
297 {
298 /*
299 * Do double lookups as needed...
300 */
301
302 if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL)) != NULL)
303 {
304 /*
305 * See if the hostname maps to the same IP address...
306 */
307
308 for (addr = addrlist; addr; addr = addr->next)
309 if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
310 break;
311 }
312 else
313 addr = NULL;
314
315 httpAddrFreeList(addrlist);
316
317 if (!addr)
318 {
319 /*
320 * Can't have a hostname that doesn't resolve to the same IP address
321 * with double-lookups enabled...
322 */
323
324 cupsdLogMessage(CUPSD_LOG_DEBUG2,
325 "cupsdAcceptClient: Closing connection %d...",
326 con->http.fd);
327
328#ifdef WIN32
329 closesocket(con->http.fd);
330#else
331 close(con->http.fd);
332#endif /* WIN32 */
333
334 cupsdLogMessage(CUPSD_LOG_WARN,
335 "IP lookup failed - connection from %s closed!",
336 con->http.hostname);
bd7854cb 337 free(con);
ef416fc2 338 return;
339 }
340 }
341
342#ifdef AF_INET6
343 if (con->http.hostaddr->addr.sa_family == AF_INET6)
344 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv6)",
345 con->http.fd, con->http.hostname,
346 ntohs(con->http.hostaddr->ipv6.sin6_port));
347 else
348#endif /* AF_INET6 */
349#ifdef AF_LOCAL
350 if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
351 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s (Domain)",
352 con->http.fd, con->http.hostname);
353 else
354#endif /* AF_LOCAL */
355 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv4)",
356 con->http.fd, con->http.hostname,
357 ntohs(con->http.hostaddr->ipv4.sin_port));
358
359 /*
360 * Get the local address the client connected to...
361 */
362
363 addrlen = sizeof(temp);
364 if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
365 {
366 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
367 strerror(errno));
368
369 strcpy(con->servername, "localhost");
370 con->serverport = LocalPort;
371 }
372 else
373 {
374#ifdef AF_INET6
375 if (temp.addr.sa_family == AF_INET6)
376 {
377 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
378 con->serverport = ntohs(lis->address.ipv6.sin6_port);
379 }
380 else
381#endif /* AF_INET6 */
382 if (temp.addr.sa_family == AF_INET)
383 {
384 httpAddrLookup(&temp, con->servername, sizeof(con->servername));
385 con->serverport = ntohs(lis->address.ipv4.sin_port);
386 }
387 else
388 {
389 strcpy(con->servername, "localhost");
390 con->serverport = LocalPort;
391 }
392 }
393
bd7854cb 394 cupsArrayAdd(Clients, con);
395
ef416fc2 396 cupsdLogMessage(CUPSD_LOG_DEBUG2,
397 "cupsdAcceptClient: %d connected to server on %s:%d",
398 con->http.fd, con->servername, con->serverport);
399
400 /*
401 * Using TCP_NODELAY improves responsiveness, especially on systems
402 * with a slow loopback interface... Since we write large buffers
403 * when sending print files and requests, there shouldn't be any
404 * performance penalty for this...
405 */
406
407 val = 1;
408 setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
409
410 /*
411 * Close this file on all execs...
412 */
413
414 fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
415
416 /*
417 * Add the socket to the select() input mask.
418 */
419
420 cupsdLogMessage(CUPSD_LOG_DEBUG2,
421 "cupsdAcceptClient: Adding fd %d to InputSet...",
422 con->http.fd);
423 FD_SET(con->http.fd, InputSet);
424
ef416fc2 425 /*
426 * Temporarily suspend accept()'s until we lose a client...
427 */
428
bd7854cb 429 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 430 cupsdPauseListening();
431
432#ifdef HAVE_SSL
433 /*
434 * See if we are connecting on a secure port...
435 */
436
437 if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
438 {
439 /*
440 * https connection; go secure...
441 */
442
443 con->http.encryption = HTTP_ENCRYPT_ALWAYS;
444
411affcf 445 if (!encrypt_client(con))
446 cupsdCloseClient(con);
ef416fc2 447 }
448 else
449 con->auto_ssl = 1;
450#endif /* HAVE_SSL */
451}
452
453
454/*
455 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
456 */
457
458void
459cupsdCloseAllClients(void)
460{
bd7854cb 461 cupsd_client_t *con; /* Current client */
462
463
464 for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
465 con;
466 con = (cupsd_client_t *)cupsArrayNext(Clients))
467 cupsdCloseClient(con);
ef416fc2 468}
469
470
471/*
472 * 'cupsdCloseClient()' - Close a remote client.
473 */
474
475int /* O - 1 if partial close, 0 if fully closed */
476cupsdCloseClient(cupsd_client_t *con) /* I - Client to close */
477{
478 int partial; /* Do partial close for SSL? */
479#ifdef HAVE_LIBSSL
480 SSL_CTX *context; /* Context for encryption */
481 SSL *conn; /* Connection for encryption */
482 unsigned long error; /* Error code */
483#elif defined(HAVE_GNUTLS)
89d46774 484 http_tls_t *conn; /* TLS connection information */
485 int error; /* Error code */
ef416fc2 486 gnutls_certificate_server_credentials *credentials;
487 /* TLS credentials */
89d46774 488# elif defined(HAVE_CDSASSL)
489 http_tls_t *conn; /* CDSA connection information */
ef416fc2 490#endif /* HAVE_LIBSSL */
491
492
493 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdCloseClient: %d", con->http.fd);
494
495 /*
496 * Flush pending writes before closing...
497 */
498
499 httpFlushWrite(HTTP(con));
500
501 partial = 0;
502
503#ifdef HAVE_SSL
504 /*
505 * Shutdown encryption as needed...
506 */
507
508 if (con->http.tls)
509 {
510 partial = 1;
511
512# ifdef HAVE_LIBSSL
513 conn = (SSL *)(con->http.tls);
514 context = SSL_get_SSL_CTX(conn);
515
516 switch (SSL_shutdown(conn))
517 {
518 case 1 :
519 cupsdLogMessage(CUPSD_LOG_INFO,
520 "cupsdCloseClient: SSL shutdown successful!");
521 break;
522 case -1 :
523 cupsdLogMessage(CUPSD_LOG_ERROR,
524 "cupsdCloseClient: Fatal error during SSL shutdown!");
525 default :
526 while ((error = ERR_get_error()) != 0)
527 cupsdLogMessage(CUPSD_LOG_ERROR, "cupsdCloseClient: %s",
528 ERR_error_string(error, NULL));
529 break;
530 }
531
532 SSL_CTX_free(context);
533 SSL_free(conn);
534
535# elif defined(HAVE_GNUTLS)
536 conn = (http_tls_t *)(con->http.tls);
537 credentials = (gnutls_certificate_server_credentials *)(conn->credentials);
538
539 error = gnutls_bye(conn->session, GNUTLS_SHUT_WR);
540 switch (error)
541 {
542 case GNUTLS_E_SUCCESS:
543 cupsdLogMessage(CUPSD_LOG_INFO,
544 "cupsdCloseClient: SSL shutdown successful!");
545 break;
546 default:
547 cupsdLogMessage(CUPSD_LOG_ERROR,
548 "cupsdCloseClient: %s", gnutls_strerror(error));
549 break;
550 }
551
552 gnutls_deinit(conn->session);
553 gnutls_certificate_free_credentials(*credentials);
554 free(credentials);
555 free(conn);
556
557# elif defined(HAVE_CDSASSL)
89d46774 558 conn = (http_tls_t *)(con->http.tls);
559
560 while (SSLClose(conn->session) == errSSLWouldBlock)
b423cd4c 561 usleep(1000);
562
89d46774 563 SSLDisposeContext(conn->session);
564
565 if (conn->certsArray)
566 CFRelease(conn->certsArray);
567
568 free(conn);
ef416fc2 569# endif /* HAVE_LIBSSL */
570
571 con->http.tls = NULL;
572 }
573#endif /* HAVE_SSL */
574
575 if (con->pipe_pid != 0)
576 {
577 /*
578 * Stop any CGI process...
579 */
580
581 cupsdLogMessage(CUPSD_LOG_DEBUG2,
582 "cupsdCloseClient: %d Killing process ID %d...",
583 con->http.fd, con->pipe_pid);
584 cupsdEndProcess(con->pipe_pid, 1);
585 con->pipe_pid = 0;
586 }
587
588 if (con->file >= 0)
589 {
590 if (FD_ISSET(con->file, InputSet))
591 {
592 cupsdLogMessage(CUPSD_LOG_DEBUG2,
593 "cupsdCloseClient: %d Removing fd %d from InputSet...",
594 con->http.fd, con->file);
595 FD_CLR(con->file, InputSet);
596 }
597
598 cupsdLogMessage(CUPSD_LOG_DEBUG2,
599 "cupsdCloseClient: %d Closing data file %d.",
600 con->http.fd, con->file);
601
602 close(con->file);
603 con->file = -1;
604 }
605
606 /*
607 * Close the socket and clear the file from the input set for select()...
608 */
609
610 if (con->http.fd > 0)
611 {
612 if (partial)
613 {
614 /*
615 * Only do a partial close so that the encrypted client gets everything.
616 */
617
618 cupsdLogMessage(CUPSD_LOG_DEBUG2,
619 "cupsdCloseClient: Removing fd %d from OutputSet...",
620 con->http.fd);
621 shutdown(con->http.fd, 0);
622 FD_CLR(con->http.fd, OutputSet);
623 }
624 else
625 {
626 /*
627 * Shut the socket down fully...
628 */
629
630 cupsdLogMessage(CUPSD_LOG_DEBUG2,
631 "cupsdCloseClient: Removing fd %d from InputSet and OutputSet...",
632 con->http.fd);
633 close(con->http.fd);
634 FD_CLR(con->http.fd, InputSet);
635 FD_CLR(con->http.fd, OutputSet);
636 con->http.fd = -1;
637 }
638 }
639
640 if (!partial)
641 {
642 /*
643 * Free memory...
644 */
645
646 if (con->http.input_set)
647 free(con->http.input_set);
648
649 httpClearCookie(HTTP(con));
650
651 cupsdClearString(&con->filename);
652 cupsdClearString(&con->command);
653 cupsdClearString(&con->options);
b86bc4cf 654 cupsdClearString(&con->query_string);
ef416fc2 655
656 if (con->request)
657 {
658 ippDelete(con->request);
659 con->request = NULL;
660 }
661
662 if (con->response)
663 {
664 ippDelete(con->response);
665 con->response = NULL;
666 }
667
668 if (con->language)
669 {
670 cupsLangFree(con->language);
671 con->language = NULL;
672 }
673
674 /*
675 * Re-enable new client connections if we are going back under the
676 * limit...
677 */
678
bd7854cb 679 if (cupsArrayCount(Clients) == MaxClients)
ef416fc2 680 cupsdResumeListening();
681
682 /*
683 * Compact the list of clients as necessary...
684 */
685
bd7854cb 686 cupsArrayRemove(Clients, con);
ef416fc2 687
bd7854cb 688 free(con);
ef416fc2 689 }
690
691 return (partial);
692}
693
694
d09495fa 695/*
696 * 'cupsdFlushHeader()' - Flush the header fields to the client.
697 */
698
07725fee 699int /* I - Bytes written or -1 on error */
d09495fa 700cupsdFlushHeader(cupsd_client_t *con) /* I - Client to flush to */
701{
07725fee 702 int bytes = httpFlushWrite(HTTP(con));
d09495fa 703
704 con->http.data_encoding = HTTP_ENCODE_LENGTH;
07725fee 705
706 return (bytes);
d09495fa 707}
708
709
ef416fc2 710/*
711 * 'cupsdReadClient()' - Read data from a client.
712 */
713
714int /* O - 1 on success, 0 on error */
715cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */
716{
717 char line[32768], /* Line from client... */
718 operation[64], /* Operation code from socket */
719 version[64], /* HTTP version number string */
720 locale[64], /* Locale */
721 *ptr; /* Pointer into strings */
722 int major, minor; /* HTTP version numbers */
723 http_status_t status; /* Transfer status */
724 ipp_state_t ipp_state; /* State of IPP transfer */
725 int bytes; /* Number of bytes to POST */
726 char *filename; /* Name of file for GET/HEAD */
727 char buf[1024]; /* Buffer for real filename */
728 struct stat filestats; /* File information */
729 mime_type_t *type; /* MIME type of file */
730 cupsd_printer_t *p; /* Printer */
731 static unsigned request_id = 0; /* Request ID for temp files */
732
733
734 status = HTTP_CONTINUE;
735
736 cupsdLogMessage(CUPSD_LOG_DEBUG2,
737 "cupsdReadClient: %d, used=%d, file=%d state=%d",
738 con->http.fd, con->http.used, con->file, con->http.state);
739
740 if (con->http.error)
741 {
742 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: http error seen...");
743 return (cupsdCloseClient(con));
744 }
745
746#ifdef HAVE_SSL
747 if (con->auto_ssl)
748 {
749 /*
750 * Automatically check for a SSL/TLS handshake...
751 */
752
753 con->auto_ssl = 0;
754
755 if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
756 (!buf[0] || !strchr("DGHOPT", buf[0])))
757 {
758 /*
759 * Encrypt this connection...
760 */
761
762 cupsdLogMessage(CUPSD_LOG_DEBUG2,
763 "cupsdReadClient: Saw first byte %02X, auto-negotiating SSL/TLS session...",
764 buf[0] & 255);
765
411affcf 766 if (!encrypt_client(con))
767 return (cupsdCloseClient(con));
768
ef416fc2 769 return (1);
770 }
771 }
772#endif /* HAVE_SSL */
773
774 switch (con->http.state)
775 {
776 case HTTP_WAITING :
777 /*
778 * See if we've received a request line...
779 */
780
781 if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
782 {
783 cupsdLogMessage(CUPSD_LOG_DEBUG2,
784 "cupsdReadClient: httpGets returned EOF...");
785 return (cupsdCloseClient(con));
786 }
787
788 /*
789 * Ignore blank request lines...
790 */
791
792 if (line[0] == '\0')
793 break;
794
795 /*
796 * Clear other state variables...
797 */
798
799 httpClearFields(HTTP(con));
800
801 con->http.activity = time(NULL);
802 con->http.version = HTTP_1_0;
803 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
804 con->http.data_encoding = HTTP_ENCODE_LENGTH;
805 con->http.data_remaining = 0;
806 con->http._data_remaining = 0;
807 con->operation = HTTP_WAITING;
808 con->bytes = 0;
809 con->file = -1;
810 con->file_ready = 0;
811 con->pipe_pid = 0;
812 con->username[0] = '\0';
813 con->password[0] = '\0';
814 con->uri[0] = '\0';
815
816 cupsdClearString(&con->command);
817 cupsdClearString(&con->options);
b86bc4cf 818 cupsdClearString(&con->query_string);
ef416fc2 819
2abf387c 820 if (con->request)
821 {
822 ippDelete(con->request);
823 con->request = NULL;
824 }
825
826 if (con->response)
827 {
828 ippDelete(con->response);
829 con->response = NULL;
830 }
831
832 if (con->language)
ef416fc2 833 {
834 cupsLangFree(con->language);
835 con->language = NULL;
836 }
837
838 /*
839 * Grab the request line...
840 */
841
842 switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
843 {
844 case 1 :
845 cupsdLogMessage(CUPSD_LOG_ERROR,
846 "Bad request line \"%s\" from %s!", line,
847 con->http.hostname);
848 cupsdSendError(con, HTTP_BAD_REQUEST);
849 return (cupsdCloseClient(con));
850 case 2 :
851 con->http.version = HTTP_0_9;
852 break;
853 case 3 :
854 if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
855 {
856 cupsdLogMessage(CUPSD_LOG_ERROR,
857 "Bad request line \"%s\" from %s!", line,
858 con->http.hostname);
859 cupsdSendError(con, HTTP_BAD_REQUEST);
860 return (cupsdCloseClient(con));
861 }
862
863 if (major < 2)
864 {
865 con->http.version = (http_version_t)(major * 100 + minor);
866 if (con->http.version == HTTP_1_1 && KeepAlive)
867 con->http.keep_alive = HTTP_KEEPALIVE_ON;
868 else
869 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
870 }
871 else
872 {
873 cupsdSendError(con, HTTP_NOT_SUPPORTED);
874 return (cupsdCloseClient(con));
875 }
876 break;
877 }
878
879 /*
880 * Handle full URLs in the request line...
881 */
882
883 if (strcmp(con->uri, "*"))
884 {
885 char method[HTTP_MAX_URI], /* Method/scheme */
886 userpass[HTTP_MAX_URI], /* Username:password */
887 hostname[HTTP_MAX_URI], /* Hostname */
888 resource[HTTP_MAX_URI]; /* Resource path */
889 int port; /* Port number */
890
891
892 /*
893 * Separate the URI into its components...
894 */
895
a4d04587 896 httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
897 method, sizeof(method),
ef416fc2 898 userpass, sizeof(userpass),
899 hostname, sizeof(hostname), &port,
900 resource, sizeof(resource));
901
902 /*
903 * Only allow URIs with the servername, localhost, or an IP
904 * address...
905 */
906
907 if (strcmp(method, "file") &&
908 strcasecmp(hostname, ServerName) &&
909 strcasecmp(hostname, "localhost") &&
910 !isdigit(hostname[0]))
911 {
912 /*
913 * Nope, we don't do proxies...
914 */
915
916 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad URI \"%s\" in request!",
917 con->uri);
918 cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED);
919 return (cupsdCloseClient(con));
920 }
921
922 /*
923 * Copy the resource portion back into the URI; both resource and
924 * con->uri are HTTP_MAX_URI bytes in size...
925 */
926
927 strcpy(con->uri, resource);
928 }
929
930 /*
931 * Process the request...
932 */
933
934 if (!strcmp(operation, "GET"))
935 con->http.state = HTTP_GET;
936 else if (!strcmp(operation, "PUT"))
937 con->http.state = HTTP_PUT;
938 else if (!strcmp(operation, "POST"))
939 con->http.state = HTTP_POST;
940 else if (!strcmp(operation, "DELETE"))
941 con->http.state = HTTP_DELETE;
942 else if (!strcmp(operation, "TRACE"))
943 con->http.state = HTTP_TRACE;
944 else if (!strcmp(operation, "OPTIONS"))
945 con->http.state = HTTP_OPTIONS;
946 else if (!strcmp(operation, "HEAD"))
947 con->http.state = HTTP_HEAD;
948 else
949 {
950 cupsdLogMessage(CUPSD_LOG_ERROR, "Bad operation \"%s\"!", operation);
951 cupsdSendError(con, HTTP_BAD_REQUEST);
952 return (cupsdCloseClient(con));
953 }
954
955 con->start = time(NULL);
956 con->operation = con->http.state;
957
89d46774 958 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %s %s HTTP/%d.%d",
959 con->http.fd, operation, con->uri,
ef416fc2 960 con->http.version / 100, con->http.version % 100);
961
962 con->http.status = HTTP_OK;
963
964 case HTTP_OPTIONS :
965 case HTTP_DELETE :
966 case HTTP_GET :
967 case HTTP_HEAD :
968 case HTTP_POST :
969 case HTTP_PUT :
970 case HTTP_TRACE :
971 /*
972 * Parse incoming parameters until the status changes...
973 */
974
975 status = httpUpdate(HTTP(con));
976
977 if (status != HTTP_OK && status != HTTP_CONTINUE)
978 {
979 cupsdSendError(con, HTTP_BAD_REQUEST);
980 return (cupsdCloseClient(con));
981 }
982 break;
983
984 default :
985 break; /* Anti-compiler-warning-code */
986 }
987
988 /*
989 * Handle new transfers...
990 */
991
992 if (status == HTTP_OK)
993 {
994 if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
995 {
996 /*
997 * Figure out the locale from the Accept-Language and Content-Type
998 * fields...
999 */
1000
1001 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ',')) != NULL)
1002 *ptr = '\0';
1003
1004 if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ';')) != NULL)
1005 *ptr = '\0';
1006
1007 if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE], "charset=")) != NULL)
1008 {
1009 /*
1010 * Combine language and charset, and trim any extra params in the
1011 * content-type.
1012 */
1013
1014 snprintf(locale, sizeof(locale), "%s.%s",
1015 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
1016
1017 if ((ptr = strchr(locale, ',')) != NULL)
1018 *ptr = '\0';
1019 }
1020 else
1021 snprintf(locale, sizeof(locale), "%s.%s",
1022 con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], DefaultCharset);
d6ae789d 1023
89d46774 1024 cupsdLogMessage(CUPSD_LOG_DEBUG,
1025 "cupsdReadClient: %d Browser asked for language \"%s\"...",
1026 con->http.fd, locale);
1027
ef416fc2 1028 con->language = cupsLangGet(locale);
1029 }
1030 else
1031 con->language = cupsLangGet(DefaultLocale);
1032
1033 cupsdAuthorize(con);
1034
1035 if (!strncmp(con->http.fields[HTTP_FIELD_CONNECTION], "Keep-Alive", 10) &&
1036 KeepAlive)
1037 con->http.keep_alive = HTTP_KEEPALIVE_ON;
1038
1039 if (!con->http.fields[HTTP_FIELD_HOST][0] &&
1040 con->http.version >= HTTP_1_1)
1041 {
1042 /*
1043 * HTTP/1.1 and higher require the "Host:" field...
1044 */
1045
1046 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1047 return (cupsdCloseClient(con));
1048 }
1049 else if (con->operation == HTTP_OPTIONS)
1050 {
1051 /*
1052 * Do OPTIONS command...
1053 */
1054
1055 if (con->best && con->best->type != AUTH_NONE)
1056 {
1057 if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL))
1058 return (cupsdCloseClient(con));
1059 }
1060
1061 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1062 con->http.tls == NULL)
1063 {
1064#ifdef HAVE_SSL
1065 /*
1066 * Do encryption stuff...
1067 */
1068
1069 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1070 return (cupsdCloseClient(con));
1071
1072 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1073 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1074 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1075 httpPrintf(HTTP(con), "\r\n");
07725fee 1076
1077 if (cupsdFlushHeader(con) < 0)
1078 return (cupsdCloseClient(con));
ef416fc2 1079
411affcf 1080 if (!encrypt_client(con))
1081 return (cupsdCloseClient(con));
ef416fc2 1082#else
1083 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1084 return (cupsdCloseClient(con));
1085#endif /* HAVE_SSL */
1086 }
1087
ef416fc2 1088 if (!cupsdSendHeader(con, HTTP_OK, NULL))
1089 return (cupsdCloseClient(con));
1090
1091 httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1092 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1093 httpPrintf(HTTP(con), "\r\n");
07725fee 1094
1095 if (cupsdFlushHeader(con) < 0)
1096 return (cupsdCloseClient(con));
ef416fc2 1097 }
1098 else if (!is_path_absolute(con->uri))
1099 {
1100 /*
1101 * Protect against malicious users!
1102 */
1103
1104 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1105 return (cupsdCloseClient(con));
1106 }
1107 else
1108 {
1109 if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
1110 con->http.tls == NULL)
1111 {
1112#ifdef HAVE_SSL
1113 /*
1114 * Do encryption stuff...
1115 */
1116
1117 if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL))
1118 return (cupsdCloseClient(con));
1119
1120 httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
1121 httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
1122 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1123 httpPrintf(HTTP(con), "\r\n");
07725fee 1124
1125 if (cupsdFlushHeader(con) < 0)
1126 return (cupsdCloseClient(con));
ef416fc2 1127
411affcf 1128 if (!encrypt_client(con))
1129 return (cupsdCloseClient(con));
ef416fc2 1130#else
1131 if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED))
1132 return (cupsdCloseClient(con));
1133#endif /* HAVE_SSL */
1134 }
1135
1136 if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
1137 {
1138 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1139 "cupsdReadClient: Unauthorized request for %s...\n",
1140 con->uri);
1141 cupsdSendError(con, status);
1142 return (cupsdCloseClient(con));
1143 }
1144
b423cd4c 1145 if (con->http.expect &&
1146 (con->operation == HTTP_POST || con->operation == HTTP_PUT))
ef416fc2 1147 {
b423cd4c 1148 if (con->http.expect == HTTP_CONTINUE)
1149 {
1150 /*
1151 * Send 100-continue header...
1152 */
1153
1154 if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL))
1155 return (cupsdCloseClient(con));
1156 }
1157 else
1158 {
1159 /*
1160 * Send 417-expectation-failed header...
1161 */
1162
1163 if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL))
1164 return (cupsdCloseClient(con));
1165
1166 httpPrintf(HTTP(con), "Content-Length: 0\r\n");
1167 httpPrintf(HTTP(con), "\r\n");
07725fee 1168
1169 if (cupsdFlushHeader(con) < 0)
1170 return (cupsdCloseClient(con));
b423cd4c 1171 }
ef416fc2 1172 }
1173
1174 switch (con->http.state)
1175 {
1176 case HTTP_GET_SEND :
1177 if (!strncmp(con->uri, "/printers/", 10) &&
1178 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1179 {
1180 /*
1181 * Send PPD file - get the real printer name since printer
1182 * names are not case sensitive but filenames can be...
1183 */
1184
1185 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1186
1187 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1188 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1189 else
1190 {
1191 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1192 return (cupsdCloseClient(con));
1193
1194 break;
1195 }
1196 }
1197
1198 if ((!strncmp(con->uri, "/admin", 6) &&
1199 strncmp(con->uri, "/admin/conf/", 12) &&
1200 strncmp(con->uri, "/admin/log/", 11)) ||
1201 !strncmp(con->uri, "/printers", 9) ||
1202 !strncmp(con->uri, "/classes", 8) ||
1203 !strncmp(con->uri, "/help", 5) ||
1204 !strncmp(con->uri, "/jobs", 5))
1205 {
1206 /*
1207 * Send CGI output...
1208 */
1209
1210 if (!strncmp(con->uri, "/admin", 6))
1211 {
1212 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1213 ServerBin);
1214
b423cd4c 1215 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1216 }
1217 else if (!strncmp(con->uri, "/printers", 9))
1218 {
1219 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1220 ServerBin);
b423cd4c 1221
1222 if (con->uri[9] && con->uri[10])
1223 cupsdSetString(&con->options, con->uri + 9);
1224 else
1225 cupsdSetString(&con->options, NULL);
ef416fc2 1226 }
1227 else if (!strncmp(con->uri, "/classes", 8))
1228 {
1229 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1230 ServerBin);
b423cd4c 1231
1232 if (con->uri[8] && con->uri[9])
1233 cupsdSetString(&con->options, con->uri + 8);
1234 else
1235 cupsdSetString(&con->options, NULL);
ef416fc2 1236 }
1237 else if (!strncmp(con->uri, "/jobs", 5))
1238 {
1239 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1240 ServerBin);
b423cd4c 1241
1242 if (con->uri[5] && con->uri[6])
1243 cupsdSetString(&con->options, con->uri + 5);
1244 else
1245 cupsdSetString(&con->options, NULL);
ef416fc2 1246 }
1247 else
1248 {
1249 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1250 ServerBin);
ef416fc2 1251
b423cd4c 1252 if (con->uri[5] && con->uri[6])
1253 cupsdSetString(&con->options, con->uri + 5);
1254 else
1255 cupsdSetString(&con->options, NULL);
1256 }
ef416fc2 1257
1258 if (!cupsdSendCommand(con, con->command, con->options, 0))
1259 {
1260 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1261 return (cupsdCloseClient(con));
1262 }
1263 else
1264 cupsdLogRequest(con, HTTP_OK);
1265
1266 if (con->http.version <= HTTP_1_0)
1267 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1268 }
1269 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1270 (strchr(con->uri + 12, '/') ||
1271 strlen(con->uri) == 12)) ||
1272 (!strncmp(con->uri, "/admin/log/", 11) &&
1273 (strchr(con->uri + 11, '/') ||
1274 strlen(con->uri) == 11)))
1275 {
1276 /*
1277 * GET can only be done to configuration files under
1278 * /admin/conf...
1279 */
1280
1281 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1282 return (cupsdCloseClient(con));
1283
1284 break;
1285 }
1286 else
1287 {
1288 /*
1289 * Serve a file...
1290 */
1291
1292 if ((filename = get_file(con, &filestats, buf,
1293 sizeof(buf))) == NULL)
1294 {
1295 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1296 return (cupsdCloseClient(con));
1297
1298 break;
1299 }
1300
4400e98d 1301 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1302
e1d6a774 1303 if (is_cgi(con, filename, &filestats, type))
ef416fc2 1304 {
1305 /*
1306 * Note: con->command and con->options were set by
e1d6a774 1307 * is_cgi()...
ef416fc2 1308 */
1309
1310 if (!cupsdSendCommand(con, con->command, con->options, 0))
1311 {
1312 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1313 return (cupsdCloseClient(con));
1314 }
1315 else
1316 cupsdLogRequest(con, HTTP_OK);
1317
1318 if (con->http.version <= HTTP_1_0)
1319 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1320 break;
1321 }
1322
1323 if (!check_if_modified(con, &filestats))
1324 {
1325 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1326 return (cupsdCloseClient(con));
1327 }
1328 else
1329 {
1330 if (type == NULL)
1331 strcpy(line, "text/plain");
1332 else
1333 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1334
a74454a7 1335 if (!write_file(con, HTTP_OK, filename, line, &filestats))
ef416fc2 1336 return (cupsdCloseClient(con));
1337 }
1338 }
1339 break;
1340
1341 case HTTP_POST_RECV :
1342 /*
1343 * See if the POST request includes a Content-Length field, and if
1344 * so check the length against any limits that are set...
1345 */
1346
1347 cupsdLogMessage(CUPSD_LOG_DEBUG2, "POST %s", con->uri);
1348 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1349 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1350
1351 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1352 MaxRequestSize > 0 &&
1353 con->http.data_remaining > MaxRequestSize)
1354 {
1355 /*
1356 * Request too large...
1357 */
1358
1359 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1360 return (cupsdCloseClient(con));
1361
1362 break;
1363 }
1364 else if (con->http.data_remaining < 0)
1365 {
1366 /*
1367 * Negative content lengths are invalid!
1368 */
1369
1370 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1371 return (cupsdCloseClient(con));
1372
1373 break;
1374 }
1375
1376 /*
1377 * See what kind of POST request this is; for IPP requests the
1378 * content-type field will be "application/ipp"...
1379 */
1380
1381 if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
1382 "application/ipp"))
1383 con->request = ippNew();
1384 else if ((!strncmp(con->uri, "/admin", 6) &&
1385 strncmp(con->uri, "/admin/conf/", 12) &&
1386 strncmp(con->uri, "/admin/log/", 11)) ||
1387 !strncmp(con->uri, "/printers", 9) ||
1388 !strncmp(con->uri, "/classes", 8) ||
1389 !strncmp(con->uri, "/help", 5) ||
1390 !strncmp(con->uri, "/jobs", 5))
1391 {
1392 /*
1393 * CGI request...
1394 */
1395
1396 if (!strncmp(con->uri, "/admin", 6))
1397 {
1398 cupsdSetStringf(&con->command, "%s/cgi-bin/admin.cgi",
1399 ServerBin);
1400
b423cd4c 1401 cupsdSetString(&con->options, strchr(con->uri + 6, '?'));
ef416fc2 1402 }
1403 else if (!strncmp(con->uri, "/printers", 9))
1404 {
1405 cupsdSetStringf(&con->command, "%s/cgi-bin/printers.cgi",
1406 ServerBin);
b423cd4c 1407
1408 if (con->uri[9] && con->uri[10])
1409 cupsdSetString(&con->options, con->uri + 9);
1410 else
1411 cupsdSetString(&con->options, NULL);
ef416fc2 1412 }
1413 else if (!strncmp(con->uri, "/classes", 8))
1414 {
1415 cupsdSetStringf(&con->command, "%s/cgi-bin/classes.cgi",
1416 ServerBin);
b423cd4c 1417
1418 if (con->uri[8] && con->uri[9])
1419 cupsdSetString(&con->options, con->uri + 8);
1420 else
1421 cupsdSetString(&con->options, NULL);
ef416fc2 1422 }
1423 else if (!strncmp(con->uri, "/jobs", 5))
1424 {
1425 cupsdSetStringf(&con->command, "%s/cgi-bin/jobs.cgi",
1426 ServerBin);
b423cd4c 1427
1428 if (con->uri[5] && con->uri[6])
1429 cupsdSetString(&con->options, con->uri + 5);
1430 else
1431 cupsdSetString(&con->options, NULL);
ef416fc2 1432 }
1433 else
1434 {
1435 cupsdSetStringf(&con->command, "%s/cgi-bin/help.cgi",
1436 ServerBin);
ef416fc2 1437
b423cd4c 1438 if (con->uri[5] && con->uri[6])
1439 cupsdSetString(&con->options, con->uri + 5);
1440 else
1441 cupsdSetString(&con->options, NULL);
1442 }
ef416fc2 1443
1444 cupsdLogMessage(CUPSD_LOG_DEBUG2,
b423cd4c 1445 "cupsdReadClient: %d command=\"%s\", "
1446 "options = \"%s\"",
f301802f 1447 con->http.fd, con->command,
1448 con->options ? con->options : "(null)");
ef416fc2 1449
1450 if (con->http.version <= HTTP_1_0)
1451 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
1452 }
1453 else
1454 {
1455 /*
1456 * POST to a file...
1457 */
1458
1459 if ((filename = get_file(con, &filestats, buf,
1460 sizeof(buf))) == NULL)
1461 {
1462 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1463 return (cupsdCloseClient(con));
1464
1465 break;
1466 }
1467
4400e98d 1468 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1469
e1d6a774 1470 if (!is_cgi(con, filename, &filestats, type))
ef416fc2 1471 {
1472 /*
1473 * Only POST to CGI's...
1474 */
1475
1476 if (!cupsdSendError(con, HTTP_UNAUTHORIZED))
1477 return (cupsdCloseClient(con));
1478 }
1479 }
1480 break;
1481
1482 case HTTP_PUT_RECV :
1483 /*
1484 * Validate the resource name...
1485 */
1486
1487 if (strncmp(con->uri, "/admin/conf/", 12) ||
1488 strchr(con->uri + 12, '/') ||
1489 strlen(con->uri) == 12)
1490 {
1491 /*
1492 * PUT can only be done to configuration files under
1493 * /admin/conf...
1494 */
1495
1496 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1497 return (cupsdCloseClient(con));
1498
1499 break;
1500 }
1501
1502 /*
1503 * See if the PUT request includes a Content-Length field, and if
1504 * so check the length against any limits that are set...
1505 */
1506
1507 cupsdLogMessage(CUPSD_LOG_DEBUG2, "PUT %s", con->uri);
1508 cupsdLogMessage(CUPSD_LOG_DEBUG2, "CONTENT_TYPE = %s",
1509 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
1510
1511 if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
1512 MaxRequestSize > 0 &&
1513 con->http.data_remaining > MaxRequestSize)
1514 {
1515 /*
1516 * Request too large...
1517 */
1518
1519 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1520 return (cupsdCloseClient(con));
1521
1522 break;
1523 }
1524 else if (con->http.data_remaining < 0)
1525 {
1526 /*
1527 * Negative content lengths are invalid!
1528 */
1529
1530 if (!cupsdSendError(con, HTTP_BAD_REQUEST))
1531 return (cupsdCloseClient(con));
1532
1533 break;
1534 }
1535
1536 /*
1537 * Open a temporary file to hold the request...
1538 */
1539
1540 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot,
1541 request_id ++);
1542 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1543
1544 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1545 "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1546 con->filename, con->file);
1547
1548 if (con->file < 0)
1549 {
1550 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1551 return (cupsdCloseClient(con));
1552 }
1553
1554 fchmod(con->file, 0640);
1555 fchown(con->file, RunUser, Group);
1556 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1557 break;
1558
1559 case HTTP_DELETE :
1560 case HTTP_TRACE :
1561 cupsdSendError(con, HTTP_NOT_IMPLEMENTED);
1562 return (cupsdCloseClient(con));
1563
1564 case HTTP_HEAD :
1565 if (!strncmp(con->uri, "/printers/", 10) &&
1566 !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
1567 {
1568 /*
1569 * Send PPD file - get the real printer name since printer
1570 * names are not case sensitive but filenames can be...
1571 */
1572
1573 con->uri[strlen(con->uri) - 4] = '\0'; /* Drop ".ppd" */
1574
1575 if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
1576 snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
1577 else
1578 {
1579 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1580 return (cupsdCloseClient(con));
1581
1582 break;
1583 }
1584 }
1585
1586 if ((!strncmp(con->uri, "/admin", 6) &&
1587 strncmp(con->uri, "/admin/conf/", 12) &&
1588 strncmp(con->uri, "/admin/log/", 11)) ||
1589 !strncmp(con->uri, "/printers", 9) ||
1590 !strncmp(con->uri, "/classes", 8) ||
1591 !strncmp(con->uri, "/help", 5) ||
1592 !strncmp(con->uri, "/jobs", 5))
1593 {
1594 /*
1595 * CGI output...
1596 */
1597
1598 if (!cupsdSendHeader(con, HTTP_OK, "text/html"))
1599 return (cupsdCloseClient(con));
1600
1601 if (httpPrintf(HTTP(con), "\r\n") < 0)
1602 return (cupsdCloseClient(con));
1603
07725fee 1604 if (cupsdFlushHeader(con) < 0)
1605 return (cupsdCloseClient(con));
d09495fa 1606
ef416fc2 1607 cupsdLogRequest(con, HTTP_OK);
1608 }
1609 else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
1610 (strchr(con->uri + 12, '/') ||
1611 strlen(con->uri) == 12)) ||
1612 (!strncmp(con->uri, "/admin/log/", 11) &&
1613 (strchr(con->uri + 11, '/') ||
1614 strlen(con->uri) == 11)))
1615 {
1616 /*
1617 * HEAD can only be done to configuration files under
1618 * /admin/conf...
1619 */
1620
1621 if (!cupsdSendError(con, HTTP_FORBIDDEN))
1622 return (cupsdCloseClient(con));
1623
1624 break;
1625 }
1626 else if ((filename = get_file(con, &filestats, buf,
1627 sizeof(buf))) == NULL)
1628 {
1629 if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html"))
1630 return (cupsdCloseClient(con));
1631
1632 cupsdLogRequest(con, HTTP_NOT_FOUND);
1633 }
1634 else if (!check_if_modified(con, &filestats))
1635 {
1636 if (!cupsdSendError(con, HTTP_NOT_MODIFIED))
1637 return (cupsdCloseClient(con));
1638
1639 cupsdLogRequest(con, HTTP_NOT_MODIFIED);
1640 }
1641 else
1642 {
1643 /*
1644 * Serve a file...
1645 */
1646
4400e98d 1647 type = mimeFileType(MimeDatabase, filename, NULL, NULL);
ef416fc2 1648 if (type == NULL)
1649 strcpy(line, "text/plain");
1650 else
1651 snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
1652
1653 if (!cupsdSendHeader(con, HTTP_OK, line))
1654 return (cupsdCloseClient(con));
1655
1656 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
1657 httpGetDateString(filestats.st_mtime)) < 0)
1658 return (cupsdCloseClient(con));
1659
1660 if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
1661 (unsigned long)filestats.st_size) < 0)
1662 return (cupsdCloseClient(con));
1663
1664 cupsdLogRequest(con, HTTP_OK);
1665 }
1666
1667 if (httpPrintf(HTTP(con), "\r\n") < 0)
1668 return (cupsdCloseClient(con));
1669
07725fee 1670 if (cupsdFlushHeader(con) < 0)
1671 return (cupsdCloseClient(con));
d09495fa 1672
ef416fc2 1673 con->http.state = HTTP_WAITING;
1674 break;
1675
1676 default :
1677 break; /* Anti-compiler-warning-code */
1678 }
1679 }
1680 }
1681
1682 /*
1683 * Handle any incoming data...
1684 */
1685
1686 switch (con->http.state)
1687 {
1688 case HTTP_PUT_RECV :
1689 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1690 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_%s, "
1691 "con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1692 con->http.fd,
1693 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1694 "CHUNKED" : "LENGTH",
1695 CUPS_LLCAST con->http.data_remaining, con->file);
1696
a4d04587 1697 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
ef416fc2 1698 return (cupsdCloseClient(con));
1699 else if (bytes > 0)
1700 {
1701 con->bytes += bytes;
1702
1703 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1704 "cupsdReadClient: %d writing %d bytes to %d",
1705 con->http.fd, bytes, con->file);
1706
1707 if (write(con->file, line, bytes) < bytes)
1708 {
1709 cupsdLogMessage(CUPSD_LOG_ERROR,
1710 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1711 bytes, con->filename, strerror(errno));
1712
1713 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1714 "cupsdReadClient: Closing data file %d...",
1715 con->file);
1716
1717 close(con->file);
1718 con->file = -1;
1719 unlink(con->filename);
1720 cupsdClearString(&con->filename);
1721
1722 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1723 return (cupsdCloseClient(con));
1724 }
1725 }
1726
1727 if (con->http.state == HTTP_WAITING)
1728 {
1729 /*
1730 * End of file, see how big it is...
1731 */
1732
1733 fstat(con->file, &filestats);
1734
1735 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1736 "cupsdReadClient: %d Closing data file %d, size="
1737 CUPS_LLFMT ".",
1738 con->http.fd, con->file,
1739 CUPS_LLCAST filestats.st_size);
1740
1741 close(con->file);
1742 con->file = -1;
1743
1744 if (filestats.st_size > MaxRequestSize &&
1745 MaxRequestSize > 0)
1746 {
1747 /*
1748 * Request is too big; remove it and send an error...
1749 */
1750
1751 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1752 "cupsdReadClient: %d Removing temp file %s",
1753 con->http.fd, con->filename);
1754 unlink(con->filename);
1755 cupsdClearString(&con->filename);
1756
1757 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1758 return (cupsdCloseClient(con));
1759 }
1760
1761 /*
1762 * Install the configuration file...
1763 */
1764
1765 status = install_conf_file(con);
1766
1767 /*
1768 * Return the status to the client...
1769 */
1770
1771 if (!cupsdSendError(con, status))
1772 return (cupsdCloseClient(con));
1773 }
1774 break;
1775
1776 case HTTP_POST_RECV :
1777 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1778 "cupsdReadClient: %d con->data_encoding=HTTP_ENCODE_"
1779 "%s, con->data_remaining=" CUPS_LLFMT ", con->file=%d",
1780 con->http.fd,
1781 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
1782 "CHUNKED" : "LENGTH",
1783 CUPS_LLCAST con->http.data_remaining, con->file);
1784
2abf387c 1785 if (con->request)
ef416fc2 1786 {
1787 /*
1788 * Grab any request data from the connection...
1789 */
1790
1791 if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
1792 {
1793 cupsdLogMessage(CUPSD_LOG_ERROR,
1794 "cupsdReadClient: %d IPP Read Error!",
1795 con->http.fd);
1796
1797 cupsdSendError(con, HTTP_BAD_REQUEST);
1798 return (cupsdCloseClient(con));
1799 }
1800 else if (ipp_state != IPP_DATA)
1801 {
1802 if (con->http.state == HTTP_POST_SEND)
1803 {
1804 cupsdSendError(con, HTTP_BAD_REQUEST);
1805 return (cupsdCloseClient(con));
1806 }
1807
1808 break;
1809 }
1810 else
1811 con->bytes += ippLength(con->request);
1812 }
1813
1814 if (con->file < 0 && con->http.state != HTTP_POST_SEND)
1815 {
1816 /*
1817 * Create a file as needed for the request data...
1818 */
1819
1820 cupsdSetStringf(&con->filename, "%s/%08x", RequestRoot, request_id ++);
1821 con->file = open(con->filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
1822
1823 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdReadClient: %d REQUEST %s=%d", con->http.fd,
1824 con->filename, con->file);
1825
1826 if (con->file < 0)
1827 {
1828 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1829 return (cupsdCloseClient(con));
1830 }
1831
1832 fchmod(con->file, 0640);
1833 fchown(con->file, RunUser, Group);
1834 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1835 }
1836
1837 if (con->http.state != HTTP_POST_SEND)
1838 {
a4d04587 1839 if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
ef416fc2 1840 return (cupsdCloseClient(con));
1841 else if (bytes > 0)
1842 {
1843 con->bytes += bytes;
1844
1845 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1846 "cupsdReadClient: %d writing %d bytes to %d",
1847 con->http.fd, bytes, con->file);
1848
1849 if (write(con->file, line, bytes) < bytes)
1850 {
1851 cupsdLogMessage(CUPSD_LOG_ERROR,
1852 "cupsdReadClient: Unable to write %d bytes to %s: %s",
1853 bytes, con->filename, strerror(errno));
1854
1855 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1856 "cupsdReadClient: Closing file %d...",
1857 con->file);
1858
1859 close(con->file);
1860 con->file = -1;
1861 unlink(con->filename);
1862 cupsdClearString(&con->filename);
1863
1864 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1865 return (cupsdCloseClient(con));
1866 }
1867 }
1868 else if (con->http.state == HTTP_POST_RECV)
1869 return (1); /* ??? */
1870 else if (con->http.state != HTTP_POST_SEND)
1871 return (cupsdCloseClient(con));
1872 }
1873
1874 if (con->http.state == HTTP_POST_SEND)
1875 {
1876 if (con->file >= 0)
1877 {
1878 fstat(con->file, &filestats);
1879
1880 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1881 "cupsdReadClient: %d Closing data file %d, "
1882 "size=" CUPS_LLFMT ".",
1883 con->http.fd, con->file,
1884 CUPS_LLCAST filestats.st_size);
1885
1886 close(con->file);
1887 con->file = -1;
1888
1889 if (filestats.st_size > MaxRequestSize &&
1890 MaxRequestSize > 0)
1891 {
1892 /*
1893 * Request is too big; remove it and send an error...
1894 */
1895
1896 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1897 "cupsdReadClient: %d Removing temp file %s",
1898 con->http.fd, con->filename);
1899 unlink(con->filename);
1900 cupsdClearString(&con->filename);
1901
1902 if (con->request)
1903 {
1904 /*
1905 * Delete any IPP request data...
1906 */
1907
1908 ippDelete(con->request);
1909 con->request = NULL;
1910 }
1911
1912 if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE))
1913 return (cupsdCloseClient(con));
1914 }
1915
1916 if (con->command)
1917 {
1918 if (!cupsdSendCommand(con, con->command, con->options, 0))
1919 {
1920 if (!cupsdSendError(con, HTTP_NOT_FOUND))
1921 return (cupsdCloseClient(con));
1922 }
1923 else
1924 cupsdLogRequest(con, HTTP_OK);
1925 }
1926 }
1927
1928 if (con->request)
1929 return (cupsdProcessIPPRequest(con));
1930 }
1931 break;
1932
1933 default :
1934 break; /* Anti-compiler-warning-code */
1935 }
1936
1937 if (!con->http.keep_alive && con->http.state == HTTP_WAITING)
1938 return (cupsdCloseClient(con));
1939 else
1940 return (1);
1941}
1942
1943
1944/*
1945 * 'cupsdSendCommand()' - Send output from a command via HTTP.
1946 */
1947
1948int /* O - 1 on success, 0 on failure */
1949cupsdSendCommand(
1950 cupsd_client_t *con, /* I - Client connection */
1951 char *command, /* I - Command to run */
1952 char *options, /* I - Command-line options */
1953 int root) /* I - Run as root? */
1954{
1955 int fd; /* Standard input file descriptor */
1956
1957
1958 if (con->filename)
ed486911 1959 {
ef416fc2 1960 fd = open(con->filename, O_RDONLY);
ef416fc2 1961
ed486911 1962 if (fd < 0)
1963 {
1964 cupsdLogMessage(CUPSD_LOG_ERROR,
1965 "cupsdSendCommand: %d Unable to open \"%s\" for reading: %s",
1966 con->http.fd, con->filename ? con->filename : "/dev/null",
1967 strerror(errno));
1968 return (0);
1969 }
ef416fc2 1970
ed486911 1971 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
1972 }
1973 else
1974 fd = -1;
ef416fc2 1975
1976 con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
1977
ed486911 1978 if (fd >= 0)
1979 close(fd);
ef416fc2 1980
1981 cupsdLogMessage(CUPSD_LOG_INFO, "Started \"%s\" (pid=%d)", command,
1982 con->pipe_pid);
1983
1984 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendCommand: %d file=%d",
1985 con->http.fd, con->file);
1986
1987 if (con->pipe_pid == 0)
1988 return (0);
1989
1990 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
1991
1992 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1993 "cupsdSendCommand: Adding fd %d to InputSet...", con->file);
1994 cupsdLogMessage(CUPSD_LOG_DEBUG2,
1995 "cupsdSendCommand: Adding fd %d to OutputSet...",
1996 con->http.fd);
1997
1998 FD_SET(con->file, InputSet);
1999 FD_SET(con->http.fd, OutputSet);
2000
2001 con->sent_header = 0;
2002 con->file_ready = 0;
2003 con->got_fields = 0;
2004 con->field_col = 0;
2005
2006 return (1);
2007}
2008
2009
2010/*
2011 * 'cupsdSendError()' - Send an error message via HTTP.
2012 */
2013
2014int /* O - 1 if successful, 0 otherwise */
2015cupsdSendError(cupsd_client_t *con, /* I - Connection */
2016 http_status_t code) /* I - Error code */
2017{
4744bd90 2018#ifdef HAVE_SSL
2019 /*
2020 * Force client to upgrade for authentication if that is how the
2021 * server is configured...
2022 */
2023
2024 if (code == HTTP_UNAUTHORIZED &&
2025 DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
2026 strcasecmp(con->http.hostname, "localhost") &&
2027 !con->http.tls)
2028 {
2029 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2030 "cupsdSendError: Encryption before authentication!");
2031 code = HTTP_UPGRADE_REQUIRED;
2032 }
2033#endif /* HAVE_SSL */
2034
ef416fc2 2035 /*
2036 * Put the request in the access_log file...
2037 */
2038
2039 cupsdLogRequest(con, code);
2040
2041 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendError: %d code=%d (%s)",
2042 con->http.fd, code, httpStatus(code));
2043
2044 /*
2045 * To work around bugs in some proxies, don't use Keep-Alive for some
2046 * error messages...
2047 */
2048
2049 if (code >= HTTP_BAD_REQUEST)
2050 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
2051
2052 /*
2053 * Send an error message back to the client. If the error code is a
2054 * 400 or 500 series, make sure the message contains some text, too!
2055 */
2056
2057 if (!cupsdSendHeader(con, code, NULL))
2058 return (0);
2059
2060#ifdef HAVE_SSL
2061 if (code == HTTP_UPGRADE_REQUIRED)
2062 if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
2063 return (0);
2064
2065 if (httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n") < 0)
2066 return (0);
2067#endif /* HAVE_SSL */
2068
2069 if ((con->http.version >= HTTP_1_1 && !con->http.keep_alive) ||
2070 (code >= HTTP_BAD_REQUEST && code != HTTP_UPGRADE_REQUIRED))
2071 {
2072 if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
2073 return (0);
2074 }
2075
2076 if (code >= HTTP_BAD_REQUEST)
2077 {
2078 /*
2079 * Send a human-readable error message.
2080 */
2081
80ca4592 2082 char message[4096], /* Message for user */
2083 urltext[1024], /* URL redirection text */
2084 redirect[1024]; /* Redirection link */
ef416fc2 2085 const char *text; /* Status-specific text */
2086
80ca4592 2087
2088 redirect[0] = '\0';
2089
ef416fc2 2090 if (code == HTTP_UNAUTHORIZED)
2091 text = _cupsLangString(con->language,
2092 _("Enter your username and password or the "
2093 "root username and password to access this "
2094 "page."));
2095 else if (code == HTTP_UPGRADE_REQUIRED)
80ca4592 2096 {
2097 text = urltext;
2098
2099 snprintf(urltext, sizeof(urltext),
2100 _cupsLangString(con->language,
2101 _("You must access this page using the URL "
2102 "<A HREF=\"https://%s:%d%s\">"
2103 "https://%s:%d%s</A>.")),
2104 con->servername, con->serverport, con->uri,
2105 con->servername, con->serverport, con->uri);
2106
2107 snprintf(redirect, sizeof(redirect),
b86bc4cf 2108 "<META HTTP-EQUIV=\"Refresh\" "
2109 "CONTENT=\"3;URL=https://%s:%d%s\">\n",
80ca4592 2110 con->servername, con->serverport, con->uri);
2111 }
ef416fc2 2112 else
2113 text = "";
2114
2115 snprintf(message, sizeof(message),
2116 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" "
2117 "\"http://www.w3.org/TR/REC-html40/loose.dtd\">\n"
2118 "<HTML>\n"
2119 "<HEAD>\n"
2120 "\t<META HTTP-EQUIV=\"Content-Type\" "
2121 "CONTENT=\"text/html; charset=utf-8\">\n"
2122 "\t<TITLE>%d %s</TITLE>\n"
2123 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2124 "HREF=\"/cups.css\">\n"
80ca4592 2125 "%s"
ef416fc2 2126 "</HEAD>\n"
2127 "<BODY>\n"
2128 "<H1>%d %s</H1>\n"
2129 "<P>%s</P>\n"
2130 "</BODY>\n"
2131 "</HTML>\n",
80ca4592 2132 code, httpStatus(code), redirect, code, httpStatus(code), text);
ef416fc2 2133
2134 if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2135 return (0);
2136 if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
2137 (int)strlen(message)) < 0)
2138 return (0);
2139 if (httpPrintf(HTTP(con), "\r\n") < 0)
2140 return (0);
2141 if (httpPrintf(HTTP(con), "%s", message) < 0)
2142 return (0);
2143 }
2144 else if (httpPrintf(HTTP(con), "\r\n") < 0)
2145 return (0);
2146
07725fee 2147 if (cupsdFlushHeader(con) < 0)
2148 return (0);
d09495fa 2149
ef416fc2 2150 con->http.state = HTTP_WAITING;
2151
2152 return (1);
2153}
2154
2155
ef416fc2 2156/*
2157 * 'cupsdSendHeader()' - Send an HTTP request.
2158 */
2159
2160int /* O - 1 on success, 0 on failure */
2161cupsdSendHeader(cupsd_client_t *con, /* I - Client to send to */
2162 http_status_t code, /* I - HTTP status code */
2163 char *type) /* I - MIME type of document */
2164{
4744bd90 2165 /*
2166 * Send the HTTP status header...
2167 */
2168
b423cd4c 2169 if (code == HTTP_CONTINUE)
2170 {
4744bd90 2171 /*
2172 * 100-continue doesn't send any headers...
2173 */
2174
07725fee 2175 return (httpPrintf(HTTP(con), "HTTP/%d.%d 100 Continue\r\n\r\n",
2176 con->http.version / 100, con->http.version % 100) > 0);
b423cd4c 2177 }
2178
07725fee 2179 httpFlushWrite(HTTP(con));
2180
2181 con->http.data_encoding = HTTP_ENCODE_FIELDS;
2182
2183 if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
2184 con->http.version % 100, code, httpStatus(code)) < 0)
2185 return (0);
ef416fc2 2186 if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
2187 return (0);
2188 if (ServerHeader)
2189 if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
2190 return (0);
2191 if (con->http.keep_alive && con->http.version >= HTTP_1_0)
2192 {
2193 if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
2194 return (0);
2195 if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
2196 KeepAliveTimeout) < 0)
2197 return (0);
2198 }
2199 if (code == HTTP_METHOD_NOT_ALLOWED)
2200 if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST\r\n") < 0)
2201 return (0);
2202
2203 if (code == HTTP_UNAUTHORIZED)
2204 {
2205 int auth_type; /* Authentication type */
2206
2207
2208 if (!con->best || con->best->type == AUTH_NONE)
2209 auth_type = DefaultAuthType;
2210 else
2211 auth_type = con->best->type;
2212
2213 if (auth_type != AUTH_DIGEST)
2214 {
2215 if (httpPrintf(HTTP(con),
2216 "WWW-Authenticate: Basic realm=\"CUPS\"\r\n") < 0)
2217 return (0);
2218 }
2219 else
2220 {
2221 if (httpPrintf(HTTP(con),
2222 "WWW-Authenticate: Digest realm=\"CUPS\", nonce=\"%s\"\r\n",
2223 con->http.hostname) < 0)
2224 return (0);
2225 }
2226 }
2227
e1d6a774 2228 if (con->language && strcmp(con->language->language, "C"))
ef416fc2 2229 {
2230 if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
2231 con->language->language) < 0)
2232 return (0);
2233 }
2234
e1d6a774 2235 if (type)
ef416fc2 2236 {
2237 if (!strcmp(type, "text/html"))
2238 {
2239 if (httpPrintf(HTTP(con),
2240 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2241 return (0);
2242 }
2243 else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
2244 return (0);
2245 }
2246
2247 return (1);
2248}
2249
2250
2251/*
2252 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2253 */
2254
2255void
2256cupsdUpdateCGI(void)
2257{
2258 char *ptr, /* Pointer to end of line in buffer */
2259 message[1024]; /* Pointer to message text */
2260 int loglevel; /* Log level for message */
2261
2262
2263 while ((ptr = cupsdStatBufUpdate(CGIStatusBuffer, &loglevel,
2264 message, sizeof(message))) != NULL)
2265 if (!strchr(CGIStatusBuffer->buffer, '\n'))
2266 break;
2267
d09495fa 2268 if (ptr == NULL && !CGIStatusBuffer->bufused)
ef416fc2 2269 {
2270 /*
2271 * Fatal error on pipe - should never happen!
2272 */
2273
2274 cupsdLogMessage(CUPSD_LOG_CRIT,
2275 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2276 strerror(errno));
2277 }
2278}
2279
2280
2281/*
2282 * 'cupsdWriteClient()' - Write data to a client as needed.
2283 */
2284
2285int /* O - 1 if success, 0 if fail */
2286cupsdWriteClient(cupsd_client_t *con) /* I - Client connection */
2287{
2288 int bytes; /* Number of bytes written */
2289 char buf[16385]; /* Data buffer */
2290 char *bufptr; /* Pointer into buffer */
2291 ipp_state_t ipp_state; /* IPP state value */
2292
2293
2294#ifdef DEBUG
2295 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2296 "cupsdWriteClient(con=%p) %d response=%p, file=%d "
2297 "pipe_pid=%d state=%d",
2298 con, con->http.fd, con->response, con->file, con->pipe_pid,
2299 con->http.state);
2300#endif /* DEBUG */
2301
2302 if (con->http.state != HTTP_GET_SEND &&
2303 con->http.state != HTTP_POST_SEND)
2304 return (1);
2305
2abf387c 2306 if (con->response)
ef416fc2 2307 {
07725fee 2308 ipp_state = ippWrite(HTTP(con), con->response);
ef416fc2 2309 bytes = ipp_state != IPP_ERROR && ipp_state != IPP_DATA;
2310 }
2311 else if ((bytes = read(con->file, buf, sizeof(buf) - 1)) > 0)
2312 {
2313 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2314 "cupsdWriteClient: Read %d bytes from file %d...",
2315 bytes, con->file);
2316
2317 if (con->pipe_pid && !con->got_fields)
2318 {
2319 /*
2320 * Inspect the data for Content-Type and other fields.
2321 */
2322
2323 buf[bytes] = '\0';
2324
2325 for (bufptr = buf; !con->got_fields && *bufptr; bufptr ++)
2326 if (*bufptr == '\n')
2327 {
2328 /*
2329 * Send line to client...
2330 */
2331
2332 if (bufptr > buf && bufptr[-1] == '\r')
2333 bufptr[-1] = '\0';
2334 *bufptr++ = '\0';
2335
2336 cupsdLogMessage(CUPSD_LOG_DEBUG2, "Script header: %s", buf);
2337
2338 if (!con->sent_header)
2339 {
2340 /*
2341 * Handle redirection and CGI status codes...
2342 */
2343
2344 if (!strncasecmp(buf, "Location:", 9))
d6ae789d 2345 {
ef416fc2 2346 cupsdSendHeader(con, HTTP_SEE_OTHER, NULL);
07725fee 2347 con->sent_header = 2;
2348
d6ae789d 2349 if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
2350 return (0);
2351 }
ef416fc2 2352 else if (!strncasecmp(buf, "Status:", 7))
07725fee 2353 {
d09495fa 2354 cupsdSendError(con, (http_status_t)atoi(buf + 7));
07725fee 2355 con->sent_header = 2;
2356 }
ef416fc2 2357 else
4744bd90 2358 {
ef416fc2 2359 cupsdSendHeader(con, HTTP_OK, NULL);
07725fee 2360 con->sent_header = 1;
ef416fc2 2361
4744bd90 2362 if (con->http.version == HTTP_1_1)
2363 {
4744bd90 2364 if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
2365 return (0);
2366 }
2367 }
ef416fc2 2368 }
2369
2370 if (strncasecmp(buf, "Status:", 7))
2371 httpPrintf(HTTP(con), "%s\r\n", buf);
2372
2373 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d %s",
2374 con->http.fd, buf);
2375
2376 /*
2377 * Update buffer...
2378 */
2379
2380 bytes -= (bufptr - buf);
2381 memmove(buf, bufptr, bytes + 1);
2382 bufptr = buf - 1;
2383
2384 /*
2385 * See if the line was empty...
2386 */
2387
2388 if (con->field_col == 0)
d09495fa 2389 {
ef416fc2 2390 con->got_fields = 1;
d09495fa 2391
07725fee 2392 if (cupsdFlushHeader(con) < 0)
2393 {
2394 cupsdCloseClient(con);
2395 return (0);
2396 }
d09495fa 2397
2398 if (con->http.version == HTTP_1_1)
2399 con->http.data_encoding = HTTP_ENCODE_CHUNKED;
2400 }
ef416fc2 2401 else
2402 con->field_col = 0;
2403 }
2404 else if (*bufptr != '\r')
2405 con->field_col ++;
2406
2407 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2408 "cupsdWriteClient: %d bytes=%d, got_fields=%d",
2409 con->http.fd, bytes, con->got_fields);
2410
2411 if (bytes > 0 && !con->got_fields)
2412 {
2413 /*
2414 * Remaining text needs to go out...
2415 */
2416
2417 httpPrintf(HTTP(con), "%s", buf);
2418
2419 con->http.activity = time(NULL);
2420 return (1);
2421 }
2422 else if (bytes == 0)
ef416fc2 2423 con->http.activity = time(NULL);
ef416fc2 2424 }
2425
4744bd90 2426 if (bytes > 0)
ef416fc2 2427 {
4744bd90 2428 if (httpWrite2(HTTP(con), buf, bytes) < 0)
2429 {
2430 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2431 "cupsdWriteClient: %d Write of %d bytes failed!",
2432 con->http.fd, bytes);
ef416fc2 2433
4744bd90 2434 cupsdCloseClient(con);
2435 return (0);
2436 }
ef416fc2 2437
4744bd90 2438 con->bytes += bytes;
ef416fc2 2439
4744bd90 2440 if (con->http.state == HTTP_WAITING)
2441 bytes = 0;
2442 }
ef416fc2 2443 }
2444
2445 if (bytes <= 0)
2446 {
2447 cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdWriteClient: %d bytes < 0",
2448 con->http.fd);
2449
2450 cupsdLogRequest(con, HTTP_OK);
2451
2452 httpFlushWrite(HTTP(con));
2453
07725fee 2454 if (con->http.data_encoding == HTTP_ENCODE_CHUNKED && con->sent_header == 1)
ef416fc2 2455 {
07725fee 2456 if (httpWrite2(HTTP(con), "", 0) < 0)
ef416fc2 2457 {
2458 cupsdCloseClient(con);
2459 return (0);
2460 }
2461 }
2462
2463 con->http.state = HTTP_WAITING;
2464
2465 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2466 "cupsdWriteClient: Removing fd %d from OutputSet...",
2467 con->http.fd);
2468
2469 FD_CLR(con->http.fd, OutputSet);
2470
2471 if (con->file >= 0)
2472 {
2473 if (FD_ISSET(con->file, InputSet))
2474 {
2475 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2476 "cupsdWriteClient: Removing fd %d from InputSet...",
2477 con->file);
2478 FD_CLR(con->file, InputSet);
2479 }
2480
2481 if (con->pipe_pid)
2482 cupsdEndProcess(con->pipe_pid, 0);
2483
2484 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2485 "cupsdWriteClient: %d Closing data file %d.",
2486 con->http.fd, con->file);
2487
2488 close(con->file);
2489 con->file = -1;
2490 con->pipe_pid = 0;
2491 }
2492
2493 if (con->filename)
2494 {
2495 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2496 "cupsdWriteClient: %d Removing temp file %s",
2497 con->http.fd, con->filename);
2498 unlink(con->filename);
2499 cupsdClearString(&con->filename);
2500 }
2501
2abf387c 2502 if (con->request)
ef416fc2 2503 {
2504 ippDelete(con->request);
2505 con->request = NULL;
2506 }
2507
2abf387c 2508 if (con->response)
ef416fc2 2509 {
2510 ippDelete(con->response);
2511 con->response = NULL;
2512 }
2513
2514 cupsdClearString(&con->command);
2515 cupsdClearString(&con->options);
b86bc4cf 2516 cupsdClearString(&con->query_string);
ef416fc2 2517
2518 if (!con->http.keep_alive)
2519 {
2520 cupsdCloseClient(con);
2521 return (0);
2522 }
2523 }
2524 else
2525 {
2526 con->file_ready = 0;
2527
2528 if (con->pipe_pid && !FD_ISSET(con->file, InputSet))
2529 {
2530 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2531 "cupsdWriteClient: Adding fd %d to InputSet...",
2532 con->file);
2533 FD_SET(con->file, InputSet);
2534 }
2535 }
2536
2537 con->http.activity = time(NULL);
2538
2539 return (1);
2540}
2541
2542
e1d6a774 2543/*
2544 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2545 */
2546
2547static int /* O - 1 if modified since */
2548check_if_modified(
2549 cupsd_client_t *con, /* I - Client connection */
2550 struct stat *filestats) /* I - File information */
2551{
2552 char *ptr; /* Pointer into field */
2553 time_t date; /* Time/date value */
2554 off_t size; /* Size/length value */
2555
2556
2557 size = 0;
2558 date = 0;
2559 ptr = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
2560
2561 if (*ptr == '\0')
2562 return (1);
2563
2564 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2565 "check_if_modified: %d If-Modified-Since=\"%s\"",
2566 con->http.fd, ptr);
2567
2568 while (*ptr != '\0')
2569 {
2570 while (isspace(*ptr) || *ptr == ';')
2571 ptr ++;
2572
2573 if (strncasecmp(ptr, "length=", 7) == 0)
2574 {
2575 ptr += 7;
2576 size = strtoll(ptr, NULL, 10);
2577
2578 while (isdigit(*ptr))
2579 ptr ++;
2580 }
2581 else if (isalpha(*ptr))
2582 {
2583 date = httpGetDateTime(ptr);
2584 while (*ptr != '\0' && *ptr != ';')
2585 ptr ++;
2586 }
e53920b9 2587 else
2588 ptr ++;
e1d6a774 2589 }
2590
2591 cupsdLogMessage(CUPSD_LOG_DEBUG2,
2592 "check_if_modified: %d sizes=" CUPS_LLFMT ","
2593 CUPS_LLFMT " dates=%d,%d",
2594 con->http.fd, CUPS_LLCAST size,
2595 CUPS_LLCAST filestats->st_size, (int)date,
2596 (int)filestats->st_mtime);
2597
2598 return ((size != filestats->st_size && size != 0) ||
2599 (date < filestats->st_mtime && date != 0) ||
2600 (size == 0 && date == 0));
2601}
2602
2603
80ca4592 2604#ifdef HAVE_SSL
e1d6a774 2605/*
2606 * 'encrypt_client()' - Enable encryption for the client...
2607 */
2608
2609static int /* O - 1 on success, 0 on error */
2610encrypt_client(cupsd_client_t *con) /* I - Client to encrypt */
2611{
80ca4592 2612# ifdef HAVE_LIBSSL
e1d6a774 2613 SSL_CTX *context; /* Context for encryption */
2614 SSL *conn; /* Connection for encryption */
411affcf 2615 BIO *bio; /* BIO data */
e1d6a774 2616 unsigned long error; /* Error code */
2617
2618
8ca02f3c 2619 /*
2620 * Verify that we have a certificate...
2621 */
2622
2623 if (access(ServerKey, 0) || access(ServerCertificate, 0))
2624 {
2625 /*
2626 * Nope, make a self-signed certificate...
2627 */
2628
b86bc4cf 2629 if (!make_certificate(con))
8ca02f3c 2630 return (0);
2631 }
2632
e1d6a774 2633 /*
2634 * Create the SSL context and accept the connection...
2635 */
2636
2637 context = SSL_CTX_new(SSLv23_server_method());
2638
2639 SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
2640 SSL_CTX_use_PrivateKey_file(context, ServerKey, SSL_FILETYPE_PEM);
2641 SSL_CTX_use_certificate_file(context, ServerCertificate, SSL_FILETYPE_PEM);
2642
411affcf 2643 bio = BIO_new(_httpBIOMethods());
2644 BIO_ctrl(bio, BIO_C_SET_FILE_PTR, 0, (char *)HTTP(con));
2645
e1d6a774 2646 conn = SSL_new(context);
411affcf 2647 SSL_set_bio(conn, bio, bio);
e1d6a774 2648
e1d6a774 2649 if (SSL_accept(conn) != 1)
2650 {
2651 cupsdLogMessage(CUPSD_LOG_ERROR,
2652 "encrypt_client: Unable to encrypt connection from %s!",
2653 con->http.hostname);
2654
2655 while ((error = ERR_get_error()) != 0)
2656 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2657 ERR_error_string(error, NULL));
2658
2659 SSL_CTX_free(context);
2660 SSL_free(conn);
2661 return (0);
2662 }
2663
2664 cupsdLogMessage(CUPSD_LOG_DEBUG,
2665 "encrypt_client: %d Connection from %s now encrypted.",
2666 con->http.fd, con->http.hostname);
2667
2668 con->http.tls = conn;
2669 return (1);
2670
80ca4592 2671# elif defined(HAVE_GNUTLS)
e1d6a774 2672 http_tls_t *conn; /* TLS session object */
2673 int error; /* Error code */
2674 gnutls_certificate_server_credentials *credentials;
2675 /* TLS credentials */
2676
2677
2678 /*
2679 * Verify that we have a certificate...
2680 */
2681
2682 if (access(ServerKey, 0) || access(ServerCertificate, 0))
2683 {
2684 /*
2685 * Nope, make a self-signed certificate...
2686 */
2687
b86bc4cf 2688 if (!make_certificate(con))
8ca02f3c 2689 return (0);
e1d6a774 2690 }
2691
2692 /*
2693 * Create the SSL object and perform the SSL handshake...
2694 */
2695
89d46774 2696 conn = (http_tls_t *)malloc(sizeof(http_tls_t));
e1d6a774 2697
2698 if (conn == NULL)
2699 return (0);
2700
2701 credentials = (gnutls_certificate_server_credentials *)
2702 malloc(sizeof(gnutls_certificate_server_credentials));
2703 if (credentials == NULL)
2704 {
2705 cupsdLogMessage(CUPSD_LOG_ERROR,
2706 "encrypt_client: Unable to encrypt connection from %s!",
2707 con->http.hostname);
2708 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s", strerror(errno));
2709
2710 free(conn);
2711 return (0);
2712 }
2713
2714 gnutls_certificate_allocate_credentials(credentials);
2715 gnutls_certificate_set_x509_key_file(*credentials, ServerCertificate,
2716 ServerKey, GNUTLS_X509_FMT_PEM);
2717
2718 gnutls_init(&(conn->session), GNUTLS_SERVER);
2719 gnutls_set_default_priority(conn->session);
2720 gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
411affcf 2721 gnutls_transport_set_ptr(conn->session, (gnutls_transport_ptr)HTTP(con));
2722 gnutls_transport_set_pull_function(conn->session, _httpReadGNUTLS);
2723 gnutls_transport_set_push_function(conn->session, _httpWriteGNUTLS);
e1d6a774 2724
2725 error = gnutls_handshake(conn->session);
2726
2727 if (error != GNUTLS_E_SUCCESS)
2728 {
2729 cupsdLogMessage(CUPSD_LOG_ERROR,
2730 "encrypt_client: Unable to encrypt connection from %s!",
2731 con->http.hostname);
2732 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s",
2733 gnutls_strerror(error));
2734
2735 gnutls_deinit(conn->session);
2736 gnutls_certificate_free_credentials(*credentials);
2737 free(conn);
2738 free(credentials);
2739 return (0);
2740 }
2741
2742 cupsdLogMessage(CUPSD_LOG_DEBUG,
2743 "encrypt_client: %d Connection from %s now encrypted.",
2744 con->http.fd, con->http.hostname);
2745
2746 conn->credentials = credentials;
2747 con->http.tls = conn;
2748 return (1);
2749
80ca4592 2750# elif defined(HAVE_CDSASSL)
89d46774 2751 OSStatus error; /* Error code */
2752 http_tls_t *conn; /* CDSA connection information */
e1d6a774 2753
2754
89d46774 2755 if ((conn = (http_tls_t *)malloc(sizeof(http_tls_t))) == NULL)
2756 return (0);
e1d6a774 2757
89d46774 2758 error = 0;
2759 conn->session = NULL;
b86bc4cf 2760 conn->certsArray = get_cdsa_certificate(con);
e1d6a774 2761
8ca02f3c 2762 if (!conn->certsArray)
2763 {
2764 /*
2765 * No keychain (yet), make a self-signed certificate...
2766 */
2767
b86bc4cf 2768 if (make_certificate(con))
2769 conn->certsArray = get_cdsa_certificate(con);
8ca02f3c 2770 }
2771
89d46774 2772 if (!conn->certsArray)
e1d6a774 2773 {
2774 cupsdLogMessage(CUPSD_LOG_ERROR,
411affcf 2775 "encrypt_client: Could not find signing key in keychain "
e1d6a774 2776 "\"%s\"", ServerCertificate);
2777 error = errSSLBadCert; /* errSSLBadConfiguration is a better choice, but not available on 10.2.x */
2778 }
2779
2780 if (!error)
89d46774 2781 error = SSLNewContext(true, &conn->session);
e1d6a774 2782
2783 if (!error)
89d46774 2784 error = SSLSetIOFuncs(conn->session, _httpReadCDSA, _httpWriteCDSA);
2785
2786 if (!error)
ed486911 2787 error = SSLSetProtocolVersionEnabled(conn->session, kSSLProtocol2, false);
e1d6a774 2788
2789 if (!error)
411affcf 2790 error = SSLSetConnection(conn->session, HTTP(con));
e1d6a774 2791
2792 if (!error)
89d46774 2793 error = SSLSetAllowsExpiredCerts(conn->session, true);
e1d6a774 2794
2795 if (!error)
89d46774 2796 error = SSLSetAllowsAnyRoot(conn->session, true);
ef416fc2 2797
89d46774 2798 if (!error)
2799 error = SSLSetCertificate(conn->session, conn->certsArray);
ef416fc2 2800
e1d6a774 2801 if (!error)
2802 {
2803 /*
2804 * Perform SSL/TLS handshake
2805 */
ef416fc2 2806
89d46774 2807 while ((error = SSLHandshake(conn->session)) == errSSLWouldBlock)
e1d6a774 2808 usleep(1000);
2809 }
ef416fc2 2810
e1d6a774 2811 if (error)
2812 {
2813 cupsdLogMessage(CUPSD_LOG_ERROR,
2814 "encrypt_client: Unable to encrypt connection from %s!",
2815 con->http.hostname);
ef416fc2 2816
ed486911 2817 cupsdLogMessage(CUPSD_LOG_ERROR, "encrypt_client: %s (%d)",
2818 cssmErrorString(error), (int)error);
ef416fc2 2819
e1d6a774 2820 con->http.error = error;
2821 con->http.status = HTTP_ERROR;
ef416fc2 2822
89d46774 2823 if (conn->session)
2824 SSLDisposeContext(conn->session);
2825
2826 if (conn->certsArray)
2827 CFRelease(conn->certsArray);
2828
2829 free(conn);
ef416fc2 2830
e1d6a774 2831 return (0);
ef416fc2 2832 }
2833
e1d6a774 2834 cupsdLogMessage(CUPSD_LOG_DEBUG,
2835 "encrypt_client: %d Connection from %s now encrypted.",
2836 con->http.fd, con->http.hostname);
ef416fc2 2837
e1d6a774 2838 con->http.tls = conn;
2839 return (1);
2840
80ca4592 2841# endif /* HAVE_LIBSSL */
ef416fc2 2842}
80ca4592 2843#endif /* HAVE_SSL */
ef416fc2 2844
2845
2846#ifdef HAVE_CDSASSL
2847/*
b86bc4cf 2848 * 'get_cdsa_certificate()' - Get a SSL/TLS certificate from the System keychain.
ef416fc2 2849 */
2850
b86bc4cf 2851static CFArrayRef /* O - Array of certificates */
2852get_cdsa_certificate(cupsd_client_t *con) /* I - Client connection */
ef416fc2 2853{
2854 OSStatus err; /* Error info */
b86bc4cf 2855 SecKeychainRef keychain; /* Keychain reference */
2856 SecIdentitySearchRef search; /* Search reference */
ef416fc2 2857 SecIdentityRef identity; /* Identity */
b86bc4cf 2858 CFArrayRef certificates = NULL;
2859 /* Certificate array */
ef416fc2 2860
2861
b86bc4cf 2862 if ((err = SecKeychainOpen(ServerCertificate, &keychain)))
2863 {
2864 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot open keychain \"%s\", %s",
2865 ServerCertificate, cssmErrorString(err));
2866 return (NULL);
2867 }
ef416fc2 2868
b86bc4cf 2869# if HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY
2870 /*
2871 * Use a policy to search for valid certificates who's common name matches the
2872 * servername...
2873 */
2874
2875 SecPolicySearchRef policy_search; /* Policy search ref */
2876 SecPolicyRef policy; /* Policy ref */
2877 CSSM_DATA options; /* Policy options */
2878 CSSM_APPLE_TP_SSL_OPTIONS
2879 ssl_options; /* SSL Option for hostname */
2880
2881
2882 if ((err = SecPolicySearchCreate(CSSM_CERT_X_509v3, &CSSMOID_APPLE_TP_SSL,
2883 NULL, &policy_search)))
ef416fc2 2884 {
b86bc4cf 2885 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create a policy search reference");
2886 CFRelease(keychain);
2887 return (NULL);
2888 }
ef416fc2 2889
b86bc4cf 2890 if ((err = SecPolicySearchCopyNext(policy_search, &policy)))
2891 {
2892 cupsdLogMessage(CUPSD_LOG_ERROR,
2893 "Cannot find a policy to use for searching");
2894 CFRelease(keychain);
2895 CFRelease(policy_search);
2896 return (NULL);
2897 }
ef416fc2 2898
b86bc4cf 2899 memset(&ssl_options, 0, sizeof(ssl_options));
2900 ssl_options.Version = CSSM_APPLE_TP_SSL_OPTS_VERSION;
2901 ssl_options.ServerName = con->servername;
2902 ssl_options.ServerNameLen = strlen(con->servername);
ef416fc2 2903
b86bc4cf 2904 options.Data = (uint8 *)&ssl_options;
2905 options.Length = sizeof(ssl_options);
2906
2907 if ((err = SecPolicySetValue(policy, &options)))
2908 {
2909 cupsdLogMessage(CUPSD_LOG_ERROR,
2910 "Cannot set policy value to use for searching");
2911 CFRelease(keychain);
2912 CFRelease(policy_search);
2913 return (NULL);
2914 }
2915
2916 err = SecIdentitySearchCreateWithPolicy(policy, NULL, CSSM_KEYUSE_SIGN,
2917 keychain, FALSE, &search);
2918# else
2919 /*
2920 * Assume there is exactly one SecIdentity in the keychain...
2921 */
2922
2923 err = SecIdentitySearchCreate(keychain, CSSM_KEYUSE_SIGN, &search);
2924# endif /* HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY */
2925
2926 if (err)
2927 cupsdLogMessage(CUPSD_LOG_DEBUG,
2928 "Cannot create keychain search reference: %s",
2929 cssmErrorString(err));
2930 else
2931 {
2932 if ((err = SecIdentitySearchCopyNext(search, &identity)))
2933 {
2934 cupsdLogMessage(CUPSD_LOG_DEBUG,
ef416fc2 2935 "Cannot find signing key in keychain \"%s\", error %d",
2936 ServerCertificate, (int)err);
b86bc4cf 2937 }
2938 else
2939 {
2940 if (CFGetTypeID(identity) != SecIdentityGetTypeID())
2941 cupsdLogMessage(CUPSD_LOG_ERROR,
2942 "SecIdentitySearchCopyNext CFTypeID failure!");
ef416fc2 2943 else
2944 {
b86bc4cf 2945 if ((certificates = CFArrayCreate(NULL, (const void **)&identity,
2946 1, &kCFTypeArrayCallBacks)) == NULL)
2947 cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create certificate array");
ef416fc2 2948 }
2949
b86bc4cf 2950 CFRelease(identity);
ef416fc2 2951 }
2952
b86bc4cf 2953 CFRelease(search);
ef416fc2 2954 }
2955
b86bc4cf 2956# if HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY
2957 CFRelease(policy);
2958 CFRelease(policy_search);
2959# endif /* HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY */
2960
2961 return (certificates);
ef416fc2 2962}
2963#endif /* HAVE_CDSASSL */
2964
2965
2966/*
2967 * 'get_file()' - Get a filename and state info.
2968 */
2969
2970static char * /* O - Real filename */
2971get_file(cupsd_client_t *con, /* I - Client connection */
2972 struct stat *filestats, /* O - File information */
2973 char *filename, /* IO - Filename buffer */
2974 int len) /* I - Buffer length */
2975{
2976 int status; /* Status of filesystem calls */
2977 char *ptr; /* Pointer info filename */
2978 int plen; /* Remaining length after pointer */
2979
2980
2981 /*
2982 * Need to add DocumentRoot global...
2983 */
2984
2985 if (!strncmp(con->uri, "/ppd/", 5))
2986 snprintf(filename, len, "%s%s", ServerRoot, con->uri);
2987 else if (!strncmp(con->uri, "/admin/conf/", 12))
2988 snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
2989 else if (!strncmp(con->uri, "/admin/log/", 11))
2990 {
2991 if (!strcmp(con->uri + 11, "access_log") && AccessLog[0] == '/')
2992 strlcpy(filename, AccessLog, len);
2993 else if (!strcmp(con->uri + 11, "error_log") && ErrorLog[0] == '/')
2994 strlcpy(filename, ErrorLog, len);
2995 else if (!strcmp(con->uri + 11, "page_log") && PageLog[0] == '/')
2996 strlcpy(filename, PageLog, len);
2997 else
2998 return (NULL);
2999 }
d6ae789d 3000 else if (con->language)
ef416fc2 3001 snprintf(filename, len, "%s/%s%s", DocumentRoot, con->language->language,
d6ae789d 3002 con->uri);
ef416fc2 3003 else
3004 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3005
3006 if ((ptr = strchr(filename, '?')) != NULL)
3007 *ptr = '\0';
3008
3009 /*
3010 * Grab the status for this language; if there isn't a language-specific file
3011 * then fallback to the default one...
3012 */
3013
d6ae789d 3014 if ((status = stat(filename, filestats)) != 0 && con->language &&
3015 strncmp(con->uri, "/ppd/", 5) &&
3016 strncmp(con->uri, "/admin/conf/", 12) &&
3017 strncmp(con->uri, "/admin/log/", 11))
ef416fc2 3018 {
3019 /*
d6ae789d 3020 * Drop the country code...
ef416fc2 3021 */
3022
d6ae789d 3023 char ll[3]; /* Short language name */
3024
3025
3026 strlcpy(ll, con->language->language, sizeof(ll));
3027 snprintf(filename, len, "%s/%s%s", DocumentRoot, ll, con->uri);
3028
3029 if ((ptr = strchr(filename, '?')) != NULL)
3030 *ptr = '\0';
3031
3032 if ((status = stat(filename, filestats)) != 0)
ef416fc2 3033 {
d6ae789d 3034 /*
3035 * Drop the language prefix and try the root directory...
3036 */
3037
ef416fc2 3038 snprintf(filename, len, "%s%s", DocumentRoot, con->uri);
3039
3040 if ((ptr = strchr(filename, '?')) != NULL)
3041 *ptr = '\0';
3042
3043 status = stat(filename, filestats);
3044 }
3045 }
3046
3047 /*
3048 * If we're found a directory, get the index.html file instead...
3049 */
3050
3051 if (!status && S_ISDIR(filestats->st_mode))
3052 {
3053 if (filename[strlen(filename) - 1] != '/')
3054 strlcat(filename, "/", len);
3055
3056 ptr = filename + strlen(filename);
3057 plen = len - (ptr - filename);
3058
3059 strlcpy(ptr, "index.html", plen);
3060 status = stat(filename, filestats);
3061
3062#ifdef HAVE_JAVA
3063 if (status)
3064 {
3065 strlcpy(ptr, "index.class", plen);
3066 status = stat(filename, filestats);
3067 }
3068#endif /* HAVE_JAVA */
3069
3070#ifdef HAVE_PERL
3071 if (status)
3072 {
3073 strlcpy(ptr, "index.pl", plen);
3074 status = stat(filename, filestats);
3075 }
3076#endif /* HAVE_PERL */
3077
3078#ifdef HAVE_PHP
3079 if (status)
3080 {
3081 strlcpy(ptr, "index.php", plen);
3082 status = stat(filename, filestats);
3083 }
3084#endif /* HAVE_PHP */
3085
3086#ifdef HAVE_PYTHON
3087 if (status)
3088 {
3089 strlcpy(ptr, "index.pyc", plen);
3090 status = stat(filename, filestats);
3091 }
3092
3093 if (status)
3094 {
3095 strlcpy(ptr, "index.py", plen);
3096 status = stat(filename, filestats);
3097 }
3098#endif /* HAVE_PYTHON */
3099 }
3100
3101 cupsdLogMessage(CUPSD_LOG_DEBUG2, "get_file: %d filename=%s size=%d",
3102 con->http.fd, filename,
3103 status ? -1 : (int)filestats->st_size);
3104
3105 if (!status)
3106 con->http.data_remaining = (int)filestats->st_size;
3107
3108 if (status)
3109 return (NULL);
3110 else
3111 return (filename);
3112}
3113
3114
3115/*
3116 * 'install_conf_file()' - Install a configuration file.
3117 */
3118
3119static http_status_t /* O - Status */
3120install_conf_file(cupsd_client_t *con) /* I - Connection */
3121{
3122 cups_file_t *in, /* Input file */
3123 *out; /* Output file */
3124 char buffer[1024]; /* Copy buffer */
3125 int bytes; /* Number of bytes */
3126 char conffile[1024], /* Configuration filename */
3127 newfile[1024], /* New config filename */
3128 oldfile[1024]; /* Old config filename */
3129 struct stat confinfo; /* Config file info */
3130
3131
3132 /*
3133 * First construct the filenames...
3134 */
3135
3136 snprintf(conffile, sizeof(conffile), "%s%s", ServerRoot, con->uri + 11);
3137 snprintf(newfile, sizeof(newfile), "%s%s.N", ServerRoot, con->uri + 11);
3138 snprintf(oldfile, sizeof(oldfile), "%s%s.O", ServerRoot, con->uri + 11);
3139
3140 cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...", conffile);
3141
3142 /*
3143 * Get the owner, group, and permissions of the configuration file.
3144 * If it doesn't exist, assign it to the User and Group in the
3145 * cupsd.conf file with mode 0640 permissions.
3146 */
3147
3148 if (stat(conffile, &confinfo))
3149 {
3150 confinfo.st_uid = User;
3151 confinfo.st_gid = Group;
3152 confinfo.st_mode = ConfigFilePerm;
3153 }
3154
3155 /*
3156 * Open the request file and new config file...
3157 */
3158
3159 if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
3160 {
3161 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\" - %s",
3162 con->filename, strerror(errno));
3163 return (HTTP_SERVER_ERROR);
3164 }
3165
3166 if ((out = cupsFileOpen(newfile, "wb")) == NULL)
3167 {
3168 cupsFileClose(in);
3169 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open config file \"%s\" - %s",
3170 newfile, strerror(errno));
3171 return (HTTP_SERVER_ERROR);
3172 }
3173
3174 fchmod(cupsFileNumber(out), confinfo.st_mode);
3175 fchown(cupsFileNumber(out), confinfo.st_uid, confinfo.st_gid);
3176
3177 /*
3178 * Copy from the request to the new config file...
3179 */
3180
3181 while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
3182 if (cupsFileWrite(out, buffer, bytes) < bytes)
3183 {
3184 cupsdLogMessage(CUPSD_LOG_ERROR,
3185 "Unable to copy to config file \"%s\" - %s",
3186 newfile, strerror(errno));
3187
3188 cupsFileClose(in);
3189 cupsFileClose(out);
3190 unlink(newfile);
3191
3192 return (HTTP_SERVER_ERROR);
3193 }
3194
3195 /*
3196 * Close the files...
3197 */
3198
3199 cupsFileClose(in);
3200 if (cupsFileClose(out))
3201 {
3202 cupsdLogMessage(CUPSD_LOG_ERROR,
3203 "Error file closing config file \"%s\" - %s",
3204 newfile, strerror(errno));
3205
3206 unlink(newfile);
3207
3208 return (HTTP_SERVER_ERROR);
3209 }
3210
3211 /*
3212 * Remove the request file...
3213 */
3214
3215 unlink(con->filename);
3216 cupsdClearString(&con->filename);
3217
3218 /*
3219 * Unlink the old backup, rename the current config file to the backup
3220 * filename, and rename the new config file to the config file name...
3221 */
3222
3223 if (unlink(oldfile))
3224 if (errno != ENOENT)
3225 {
3226 cupsdLogMessage(CUPSD_LOG_ERROR,
3227 "Unable to remove backup config file \"%s\" - %s",
3228 oldfile, strerror(errno));
3229
3230 unlink(newfile);
3231
3232 return (HTTP_SERVER_ERROR);
3233 }
3234
3235 if (rename(conffile, oldfile))
3236 if (errno != ENOENT)
3237 {
3238 cupsdLogMessage(CUPSD_LOG_ERROR,
3239 "Unable to rename old config file \"%s\" - %s",
3240 conffile, strerror(errno));
3241
3242 unlink(newfile);
3243
3244 return (HTTP_SERVER_ERROR);
3245 }
3246
3247 if (rename(newfile, conffile))
3248 {
3249 cupsdLogMessage(CUPSD_LOG_ERROR,
3250 "Unable to rename new config file \"%s\" - %s",
3251 newfile, strerror(errno));
3252
3253 rename(oldfile, conffile);
3254 unlink(newfile);
3255
3256 return (HTTP_SERVER_ERROR);
3257 }
3258
3259 /*
3260 * If the cupsd.conf file was updated, set the NeedReload flag...
3261 */
3262
3263 if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
3264 NeedReload = RELOAD_CUPSD;
3265 else
3266 NeedReload = RELOAD_ALL;
3267
3268 ReloadTime = time(NULL);
3269
3270 /*
3271 * Return that the file was created successfully...
3272 */
3273
3274 return (HTTP_CREATED);
3275}
3276
3277
e1d6a774 3278/*
3279 * 'is_cgi()' - Is the resource a CGI script/program?
3280 */
3281
3282static int /* O - 1 = CGI, 0 = file */
3283is_cgi(cupsd_client_t *con, /* I - Client connection */
3284 const char *filename, /* I - Real filename */
3285 struct stat *filestats, /* I - File information */
3286 mime_type_t *type) /* I - MIME type */
3287{
3288 const char *options; /* Options on URL */
3289
3290
3291 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3292 "is_cgi(con=%p, filename=\"%s\", filestats=%p, type=%s/%s)\n",
3293 con, filename, filestats, type ? type->super : "unknown",
3294 type ? type->type : "unknown");
3295
3296 /*
3297 * Get the options, if any...
3298 */
3299
3300 if ((options = strchr(con->uri, '?')) != NULL)
b86bc4cf 3301 {
e1d6a774 3302 options ++;
3303
b86bc4cf 3304 if (strchr(options, '='))
3305 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", options);
3306 }
3307
e1d6a774 3308 /*
3309 * Check for known types...
3310 */
3311
3312 if (!type || strcasecmp(type->super, "application"))
3313 {
3314 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3315 return (0);
3316 }
3317
3318 if (!strcasecmp(type->type, "x-httpd-cgi") &&
3319 (filestats->st_mode & 0111))
3320 {
3321 /*
3322 * "application/x-httpd-cgi" is a CGI script.
3323 */
3324
3325 cupsdSetString(&con->command, filename);
3326
3327 filename = strrchr(filename, '/') + 1; /* Filename always absolute */
3328
3329 cupsdSetString(&con->options, options);
3330
3331 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3332 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3333 con->command, con->options);
3334
3335 return (1);
3336 }
3337#ifdef HAVE_JAVA
3338 else if (!strcasecmp(type->type, "x-httpd-java"))
3339 {
3340 /*
3341 * "application/x-httpd-java" is a Java servlet.
3342 */
3343
3344 cupsdSetString(&con->command, CUPS_JAVA);
3345
3346 if (options)
3347 cupsdSetStringf(&con->options, "%s %s", filename, options);
3348 else
3349 cupsdSetString(&con->options, filename);
3350
3351 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3352 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3353 con->command, con->options);
3354
3355 return (1);
3356 }
3357#endif /* HAVE_JAVA */
3358#ifdef HAVE_PERL
3359 else if (!strcasecmp(type->type, "x-httpd-perl"))
3360 {
3361 /*
3362 * "application/x-httpd-perl" is a Perl page.
3363 */
3364
3365 cupsdSetString(&con->command, CUPS_PERL);
3366
3367 if (options)
3368 cupsdSetStringf(&con->options, "%s %s", filename, options);
3369 else
3370 cupsdSetString(&con->options, filename);
3371
3372 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3373 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3374 con->command, con->options);
3375
3376 return (1);
3377 }
3378#endif /* HAVE_PERL */
3379#ifdef HAVE_PHP
3380 else if (!strcasecmp(type->type, "x-httpd-php"))
3381 {
3382 /*
3383 * "application/x-httpd-php" is a PHP page.
3384 */
3385
3386 cupsdSetString(&con->command, CUPS_PHP);
3387
3388 if (options)
3389 cupsdSetStringf(&con->options, "%s %s", filename, options);
3390 else
3391 cupsdSetString(&con->options, filename);
3392
3393 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3394 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3395 con->command, con->options);
3396
3397 return (1);
3398 }
3399#endif /* HAVE_PHP */
3400#ifdef HAVE_PYTHON
3401 else if (!strcasecmp(type->type, "x-httpd-python"))
3402 {
3403 /*
3404 * "application/x-httpd-python" is a Python page.
3405 */
3406
3407 cupsdSetString(&con->command, CUPS_PYTHON);
3408
3409 if (options)
3410 cupsdSetStringf(&con->options, "%s %s", filename, options);
3411 else
3412 cupsdSetString(&con->options, filename);
3413
3414 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3415 "is_cgi: Returning 1 with command=\"%s\" and options=\"%s\"",
3416 con->command, con->options);
3417
3418 return (1);
3419 }
3420#endif /* HAVE_PYTHON */
3421
3422 cupsdLogMessage(CUPSD_LOG_DEBUG2, "is_cgi: Returning 0...");
3423
3424 return (0);
3425}
3426
3427
ef416fc2 3428/*
3429 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3430 */
3431
3432static int /* O - 0 if relative, 1 if absolute */
3433is_path_absolute(const char *path) /* I - Input path */
3434{
3435 /*
3436 * Check for a leading slash...
3437 */
3438
3439 if (path[0] != '/')
3440 return (0);
3441
3442 /*
3443 * Check for "/.." in the path...
3444 */
3445
3446 while ((path = strstr(path, "/..")) != NULL)
3447 {
3448 if (!path[3] || path[3] == '/')
3449 return (0);
3450
3451 path ++;
3452 }
3453
3454 /*
3455 * If we haven't found any relative paths, return 1 indicating an
3456 * absolute path...
3457 */
3458
3459 return (1);
3460}
3461
3462
8ca02f3c 3463#ifdef HAVE_SSL
4744bd90 3464/*
3465 * 'make_certificate()' - Make a self-signed SSL/TLS certificate.
3466 */
3467
8ca02f3c 3468static int /* O - 1 on success, 0 on failure */
b86bc4cf 3469make_certificate(cupsd_client_t *con) /* I - Client connection */
4744bd90 3470{
8ca02f3c 3471#if defined(HAVE_LIBSSL) && defined(HAVE_WAITPID)
d09495fa 3472 int pid, /* Process ID of command */
3473 status; /* Status of command */
3474 char command[1024], /* Command */
3475 *argv[11], /* Command-line arguments */
3476 *envp[MAX_ENV + 1], /* Environment variables */
3477 home[1024], /* HOME environment variable */
3478 infofile[1024], /* Type-in information for cert */
3479 seedfile[1024]; /* Random number seed file */
3480 int envc, /* Number of environment variables */
3481 bytes; /* Bytes written */
3482 cups_file_t *fp; /* Seed/info file */
3483 int infofd; /* Info file descriptor */
8ca02f3c 3484
3485
3486 /*
d09495fa 3487 * Run the "openssl" command to seed the random number generator and
3488 * generate a self-signed certificate that is good for 10 years:
3489 *
3490 * openssl rand -rand seedfile 1
8ca02f3c 3491 *
3492 * openssl req -new -x509 -keyout ServerKey \
3493 * -out ServerCertificate -days 3650 -nodes
d09495fa 3494 *
3495 * The seeding step is crucial in ensuring that the openssl command
3496 * does not block on systems without sufficient entropy...
8ca02f3c 3497 */
3498
3499 if (!cupsFileFind("openssl", getenv("PATH"), 1, command, sizeof(command)))
3500 {
3501 cupsdLogMessage(CUPSD_LOG_ERROR,
3502 "No SSL certificate and openssl command not found!");
3503 return (0);
3504 }
3505
d09495fa 3506 if (access("/dev/urandom", 0))
3507 {
3508 /*
3509 * If the system doesn't provide /dev/urandom, then any random source
3510 * will probably be blocking-style, so generate some random data to
3511 * use as a seed for the certificate. Note that we have already
3512 * seeded the random number generator in cupsdInitCerts()...
3513 */
3514
3515 cupsdLogMessage(CUPSD_LOG_INFO,
3516 "Seeding the random number generator...");
3517
3518 snprintf(home, sizeof(home), "HOME=%s", TempDir);
3519
3520 /*
3521 * Write the seed file...
3522 */
3523
3524 if ((fp = cupsTempFile2(seedfile, sizeof(seedfile))) == NULL)
3525 {
3526 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create seed file %s - %s",
3527 seedfile, strerror(errno));
3528 return (0);
3529 }
3530
3531 for (bytes = 0; bytes < 262144; bytes ++)
3532 cupsFilePutChar(fp, random());
3533
3534 cupsFileClose(fp);
3535
3536 /*
3537 * Run the openssl command to seed its random number generator...
3538 */
3539
3540 argv[0] = "openssl";
3541 argv[1] = "rand";
3542 argv[2] = "-rand";
3543 argv[3] = seedfile;
3544 argv[4] = "1";
3545 argv[5] = NULL;
3546
3547 envc = cupsdLoadEnv(envp, MAX_ENV);
3548 envp[envc++] = home;
3549 envp[envc] = NULL;
3550
3551 if (!cupsdStartProcess(command, argv, envp, -1, -1, -1, -1, 1, &pid))
3552 {
3553 unlink(seedfile);
3554 return (0);
3555 }
3556
3557 while (waitpid(pid, &status, 0) < 0)
3558 if (errno != EINTR)
3559 {
3560 status = 1;
3561 break;
3562 }
3563
3564 cupsdFinishProcess(pid, command, sizeof(command));
3565
3566 /*
3567 * Remove the seed file, as it is no longer needed...
3568 */
3569
3570 unlink(seedfile);
3571
3572 if (status)
3573 {
3574 if (WIFEXITED(status))
3575 cupsdLogMessage(CUPSD_LOG_ERROR,
3576 "Unable to seed random number generator - "
3577 "the openssl command stopped with status %d!",
3578 WEXITSTATUS(status));
3579 else
3580 cupsdLogMessage(CUPSD_LOG_ERROR,
3581 "Unable to seed random number generator - "
3582 "the openssl command crashed on signal %d!",
3583 WTERMSIG(status));
3584
3585 return (0);
3586 }
3587 }
3588
3589 /*
3590 * Create a file with the certificate information fields...
3591 *
3592 * Note: This assumes that the default questions are asked by the openssl
3593 * command...
3594 */
3595
3596 if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
3597 {
3598 cupsdLogMessage(CUPSD_LOG_ERROR,
3599 "Unable to create certificate information file %s - %s",
3600 infofile, strerror(errno));
3601 return (0);
3602 }
3603
3604 cupsFilePrintf(fp, ".\n.\n.\n%s\n.\n%s\n%s\n",
3605 ServerName, ServerName, ServerAdmin);
3606 cupsFileClose(fp);
3607
8ca02f3c 3608 cupsdLogMessage(CUPSD_LOG_INFO,
3609 "Generating SSL server key and certificate...");
3610
3611 argv[0] = "openssl";
3612 argv[1] = "req";
3613 argv[2] = "-new";
3614 argv[3] = "-x509";
3615 argv[4] = "-keyout";
3616 argv[5] = ServerKey;
3617 argv[6] = "-out";
3618 argv[7] = ServerCertificate;
3619 argv[8] = "-days";
3620 argv[9] = "3650";
3621 argv[10] = "-nodes";
3622 argv[11] = NULL;
3623
3624 cupsdLoadEnv(envp, MAX_ENV);
3625
d09495fa 3626 infofd = open(infofile, O_RDONLY);
3627
3628 if (!cupsdStartProcess(command, argv, envp, infofd, -1, -1, -1, 1, &pid))
3629 {
3630 close(infofd);
3631 unlink(infofile);
8ca02f3c 3632 return (0);
d09495fa 3633 }
3634
3635 close(infofd);
3636 unlink(infofile);
8ca02f3c 3637
3638 while (waitpid(pid, &status, 0) < 0)
3639 if (errno != EINTR)
3640 {
3641 status = 1;
3642 break;
3643 }
3644
3645 cupsdFinishProcess(pid, command, sizeof(command));
3646
3647 if (status)
3648 {
3649 if (WIFEXITED(status))
3650 cupsdLogMessage(CUPSD_LOG_ERROR,
3651 "Unable to create SSL server key and certificate - "
3652 "the openssl command stopped with status %d!",
3653 WEXITSTATUS(status));
3654 else
3655 cupsdLogMessage(CUPSD_LOG_ERROR,
3656 "Unable to create SSL server key and certificate - "
3657 "the openssl command crashed on signal %d!",
3658 WTERMSIG(status));
3659 }
3660 else
3661 {
3662 cupsdLogMessage(CUPSD_LOG_INFO, "Created SSL server key file \"%s\"...",
3663 ServerKey);
3664 cupsdLogMessage(CUPSD_LOG_INFO,
3665 "Created SSL server certificate file \"%s\"...",
3666 ServerCertificate);
3667 }
3668
3669 return (!status);
3670
3671#elif defined(HAVE_GNUTLS)
4744bd90 3672 gnutls_x509_crt crt; /* Self-signed certificate */
3673 gnutls_x509_privkey key; /* Encryption key */
3674 cups_lang_t *language; /* Default language info */
3675 cups_file_t *fp; /* Key/cert file */
3676 unsigned char buffer[8192]; /* Buffer for x509 data */
3677 size_t bytes; /* Number of bytes of data */
3678 unsigned char serial[4]; /* Serial number buffer */
3679 time_t curtime; /* Current time */
3680 int result; /* Result of GNU TLS calls */
3681
3682
3683 /*
3684 * Create the encryption key...
3685 */
3686
8ca02f3c 3687 cupsdLogMessage(CUPSD_LOG_INFO, "Generating SSL server key...");
4744bd90 3688
3689 gnutls_x509_privkey_init(&key);
3690 gnutls_x509_privkey_generate(key, GNUTLS_PK_RSA, 2048, 0);
3691
3692 /*
3693 * Save it...
3694 */
3695
3696 bytes = sizeof(buffer);
3697
3698 if ((result = gnutls_x509_privkey_export(key, GNUTLS_X509_FMT_PEM,
3699 buffer, &bytes)) < 0)
3700 {
8ca02f3c 3701 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to export SSL server key - %s",
4744bd90 3702 gnutls_strerror(result));
3703 gnutls_x509_privkey_deinit(key);
8ca02f3c 3704 return (0);
4744bd90 3705 }
3706 else if ((fp = cupsFileOpen(ServerKey, "w")) != NULL)
3707 {
3708 cupsFileWrite(fp, (char *)buffer, bytes);
3709 cupsFileClose(fp);
3710
8ca02f3c 3711 cupsdLogMessage(CUPSD_LOG_INFO, "Created SSL server key file \"%s\"...",
4744bd90 3712 ServerKey);
3713 }
3714 else
3715 {
3716 cupsdLogMessage(CUPSD_LOG_ERROR,
8ca02f3c 3717 "Unable to create SSL server key file \"%s\" - %s",
4744bd90 3718 ServerKey, strerror(errno));
3719 gnutls_x509_privkey_deinit(key);
8ca02f3c 3720 return (0);
4744bd90 3721 }
3722
3723 /*
3724 * Create the self-signed certificate...
3725 */
3726
8ca02f3c 3727 cupsdLogMessage(CUPSD_LOG_INFO, "Generating self-signed SSL certificate...");
4744bd90 3728
3729 language = cupsLangDefault();
3730 curtime = time(NULL);
3731 serial[0] = curtime >> 24;
3732 serial[1] = curtime >> 16;
3733 serial[2] = curtime >> 8;
3734 serial[3] = curtime;
3735
3736 gnutls_x509_crt_init(&crt);
3737 if (strlen(language->language) == 5)
3738 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3739 language->language + 3, 2);
3740 else
3741 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
3742 "US", 2);
3743 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COMMON_NAME, 0,
3744 ServerName, strlen(ServerName));
3745 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
3746 ServerName, strlen(ServerName));
3747 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME,
3748 0, "Unknown", 7);
3749 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0,
3750 "Unknown", 7);
3751 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_LOCALITY_NAME, 0,
3752 "Unknown", 7);
3753 gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_PKCS9_EMAIL, 0,
3754 ServerAdmin, strlen(ServerAdmin));
3755 gnutls_x509_crt_set_key(crt, key);
3756 gnutls_x509_crt_set_serial(crt, serial, sizeof(serial));
3757 gnutls_x509_crt_set_activation_time(crt, curtime);
3758 gnutls_x509_crt_set_expiration_time(crt, curtime + 10 * 365 * 86400);
3759 gnutls_x509_crt_set_ca_status(crt, 0);
3760 gnutls_x509_crt_set_subject_alternative_name(crt, GNUTLS_SAN_DNSNAME,
3761 ServerName);
3762 gnutls_x509_crt_set_key_purpose_oid(crt, GNUTLS_KP_TLS_WWW_SERVER, 0);
3763 gnutls_x509_crt_set_key_usage(crt, GNUTLS_KEY_KEY_ENCIPHERMENT);
3764 gnutls_x509_crt_set_version(crt, 3);
3765
3766 bytes = sizeof(buffer);
3767 if (gnutls_x509_crt_get_key_id(crt, 0, buffer, &bytes) >= 0)
3768 gnutls_x509_crt_set_subject_key_id(crt, buffer, bytes);
3769
3770 gnutls_x509_crt_sign(crt, crt, key);
3771
3772 /*
3773 * Save it...
3774 */
3775
3776 bytes = sizeof(buffer);
3777 if ((result = gnutls_x509_crt_export(crt, GNUTLS_X509_FMT_PEM,
3778 buffer, &bytes)) < 0)
3779 cupsdLogMessage(CUPSD_LOG_ERROR,
8ca02f3c 3780 "Unable to export SSL server certificate - %s",
4744bd90 3781 gnutls_strerror(result));
3782 else if ((fp = cupsFileOpen(ServerCertificate, "w")) != NULL)
3783 {
3784 cupsFileWrite(fp, (char *)buffer, bytes);
3785 cupsFileClose(fp);
3786
3787 cupsdLogMessage(CUPSD_LOG_INFO,
8ca02f3c 3788 "Created SSL server certificate file \"%s\"...",
4744bd90 3789 ServerCertificate);
3790 }
3791 else
3792 cupsdLogMessage(CUPSD_LOG_ERROR,
8ca02f3c 3793 "Unable to create SSL server certificate file \"%s\" - %s",
4744bd90 3794 ServerCertificate, strerror(errno));
3795
3796 /*
3797 * Cleanup...
3798 */
3799
3800 gnutls_x509_crt_deinit(crt);
3801 gnutls_x509_privkey_deinit(key);
8ca02f3c 3802
3803 return (1);
3804
3805#elif defined(HAVE_CDSASSL) && defined(HAVE_WAITPID)
b86bc4cf 3806 int pid, /* Process ID of command */
3807 status; /* Status of command */
3808 char command[1024], /* Command */
3809 *argv[4], /* Command-line arguments */
3810 *envp[MAX_ENV + 1], /* Environment variables */
3811 keychain[1024], /* Keychain argument */
3812 infofile[1024]; /* Type-in information for cert */
3813 cups_file_t *fp; /* Seed/info file */
3814 int infofd; /* Info file descriptor */
8ca02f3c 3815
3816
3817 /*
b86bc4cf 3818 * Run the "certtool" command to generate a self-signed certificate...
8ca02f3c 3819 */
3820
3821 if (!cupsFileFind("certtool", getenv("PATH"), 1, command, sizeof(command)))
3822 {
3823 cupsdLogMessage(CUPSD_LOG_ERROR,
3824 "No SSL certificate and certtool command not found!");
3825 return (0);
3826 }
3827
b86bc4cf 3828 /*
3829 * Create a file with the certificate information fields...
3830 *
3831 * Note: This assumes that the default questions are asked by the certtool
3832 * command...
3833 */
3834
3835 if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
3836 {
3837 cupsdLogMessage(CUPSD_LOG_ERROR,
3838 "Unable to create certificate information file %s - %s",
3839 infofile, strerror(errno));
3840 return (0);
3841 }
3842
3843 cupsFilePrintf(fp, "%s\nr\n\ny\nb\ns\ny\n%s\n\n\n\n\n%s\ny\n",
3844 con->servername, con->servername, ServerAdmin);
3845 cupsFileClose(fp);
3846
8ca02f3c 3847 cupsdLogMessage(CUPSD_LOG_INFO,
3848 "Generating SSL server key and certificate...");
3849
3850 snprintf(keychain, sizeof(keychain), "k=%s", ServerCertificate);
3851
3852 argv[0] = "certtool";
3853 argv[1] = "c";
b86bc4cf 3854 argv[2] = keychain;
3855 argv[3] = NULL;
8ca02f3c 3856
3857 cupsdLoadEnv(envp, MAX_ENV);
3858
b86bc4cf 3859 infofd = open(infofile, O_RDONLY);
3860
3861 if (!cupsdStartProcess(command, argv, envp, infofd, -1, -1, -1, 1, &pid))
3862 {
3863 close(infofd);
3864 unlink(infofile);
8ca02f3c 3865 return (0);
b86bc4cf 3866 }
3867
3868 close(infofd);
3869 unlink(infofile);
8ca02f3c 3870
3871 while (waitpid(pid, &status, 0) < 0)
3872 if (errno != EINTR)
3873 {
3874 status = 1;
3875 break;
3876 }
3877
3878 cupsdFinishProcess(pid, command, sizeof(command));
3879
3880 if (status)
3881 {
3882 if (WIFEXITED(status))
3883 cupsdLogMessage(CUPSD_LOG_ERROR,
3884 "Unable to create SSL server key and certificate - "
3885 "the certtool command stopped with status %d!",
3886 WEXITSTATUS(status));
3887 else
3888 cupsdLogMessage(CUPSD_LOG_ERROR,
3889 "Unable to create SSL server key and certificate - "
3890 "the certtool command crashed on signal %d!",
3891 WTERMSIG(status));
3892 }
3893 else
3894 {
3895 cupsdLogMessage(CUPSD_LOG_INFO,
3896 "Created SSL server certificate file \"%s\"...",
3897 ServerCertificate);
3898 }
3899
3900 return (!status);
3901
3902#else
3903 return (0);
3904#endif /* HAVE_LIBSSL && HAVE_WAITPID */
4744bd90 3905}
8ca02f3c 3906#endif /* HAVE_SSL */
4744bd90 3907
3908
ef416fc2 3909/*
3910 * 'pipe_command()' - Pipe the output of a command to the remote client.
3911 */
3912
3913static int /* O - Process ID */
3914pipe_command(cupsd_client_t *con, /* I - Client connection */
3915 int infile, /* I - Standard input for command */
3916 int *outfile, /* O - Standard output for command */
3917 char *command, /* I - Command to run */
3918 char *options, /* I - Options for command */
3919 int root) /* I - Run as root? */
3920{
3921 int i; /* Looping var */
3922 int pid; /* Process ID */
b423cd4c 3923 char *commptr, /* Command string pointer */
3924 commch; /* Command string character */
ef416fc2 3925 char *uriptr; /* URI string pointer */
3926 int fds[2]; /* Pipe FDs */
3927 int argc; /* Number of arguments */
3928 int envc; /* Number of environment variables */
3929 char argbuf[10240], /* Argument buffer */
3930 *argv[100], /* Argument strings */
b423cd4c 3931 *envp[MAX_ENV + 17]; /* Environment variables */
ef416fc2 3932 char content_length[1024], /* CONTENT_LENGTH environment variable */
3933 content_type[1024], /* CONTENT_TYPE environment variable */
3934 http_cookie[32768], /* HTTP_COOKIE environment variable */
3935 http_user_agent[1024], /* HTTP_USER_AGENT environment variable */
3936 lang[1024], /* LANG environment variable */
b423cd4c 3937 path_info[1024], /* PATH_INFO environment variable */
ef416fc2 3938 remote_addr[1024], /* REMOTE_ADDR environment variable */
3939 remote_host[1024], /* REMOTE_HOST environment variable */
3940 remote_user[1024], /* REMOTE_USER environment variable */
3941 script_name[1024], /* SCRIPT_NAME environment variable */
3942 server_name[1024], /* SERVER_NAME environment variable */
3943 server_port[1024]; /* SERVER_PORT environment variable */
3944
3945
3946 /*
3947 * Parse a copy of the options string, which is of the form:
3948 *
b423cd4c 3949 * argument+argument+argument
3950 * ?argument+argument+argument
3951 * param=value&param=value
3952 * ?param=value&param=value
3953 * /name?argument+argument+argument
3954 * /name?param=value&param=value
ef416fc2 3955 *
3956 * If the string contains an "=" character after the initial name,
3957 * then we treat it as a HTTP GET form request and make a copy of
3958 * the remaining string for the environment variable.
3959 *
3960 * The string is always parsed out as command-line arguments, to
3961 * be consistent with Apache...
3962 */
3963
3964 cupsdLogMessage(CUPSD_LOG_DEBUG2,
3965 "pipe_command: command=\"%s\", options=\"%s\"",
f301802f 3966 command, options ? options : "(null)");
ef416fc2 3967
b86bc4cf 3968 argv[0] = command;
ef416fc2 3969
b423cd4c 3970 if (options)
3971 strlcpy(argbuf, options, sizeof(argbuf));
3972 else
3973 argbuf[0] = '\0';
3974
3975 if (argbuf[0] == '/')
ef416fc2 3976 {
3977 /*
b423cd4c 3978 * Found some trailing path information, set PATH_INFO...
ef416fc2 3979 */
3980
b423cd4c 3981 if ((commptr = strchr(argbuf, '?')) == NULL)
3982 commptr = argbuf + strlen(argbuf);
ef416fc2 3983
b423cd4c 3984 commch = *commptr;
3985 *commptr = '\0';
3986 snprintf(path_info, sizeof(path_info), "PATH_INFO=%s", argbuf);
3987 *commptr = commch;
3988 }
3989 else
3990 {
3991 commptr = argbuf;
3992 path_info[0] = '\0';
3993 }
ef416fc2 3994
b86bc4cf 3995 cupsdLogMessage(CUPSD_LOG_INFO, "commptr=\"%s\"", commptr);
3996
3997 if (*commptr == '?' && con->operation == HTTP_GET && !con->query_string)
b423cd4c 3998 {
3999 commptr ++;
b86bc4cf 4000 cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr);
b423cd4c 4001 }
ef416fc2 4002
b423cd4c 4003 argc = 1;
ef416fc2 4004
b423cd4c 4005 if (*commptr)
4006 {
4007 argv[argc ++] = commptr;
ef416fc2 4008
b423cd4c 4009 for (; *commptr && argc < 99; commptr ++)
4010 {
ef416fc2 4011 /*
b423cd4c 4012 * Break arguments whenever we see a + or space...
ef416fc2 4013 */
4014
b423cd4c 4015 if (*commptr == ' ' || *commptr == '+')
4016 {
4017 while (*commptr == ' ' || *commptr == '+')
4018 *commptr++ = '\0';
ef416fc2 4019
b423cd4c 4020 /*
4021 * If we don't have a blank string, save it as another argument...
4022 */
ef416fc2 4023
b423cd4c 4024 if (*commptr)
4025 {
4026 argv[argc] = commptr;
4027 argc ++;
4028 }
4029 else
4030 break;
4031 }
4032 else if (*commptr == '%' && isxdigit(commptr[1] & 255) &&
4033 isxdigit(commptr[2] & 255))
4034 {
4035 /*
4036 * Convert the %xx notation to the individual character.
4037 */
ef416fc2 4038
b423cd4c 4039 if (commptr[1] >= '0' && commptr[1] <= '9')
4040 *commptr = (commptr[1] - '0') << 4;
4041 else
4042 *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
ef416fc2 4043
b423cd4c 4044 if (commptr[2] >= '0' && commptr[2] <= '9')
4045 *commptr |= commptr[2] - '0';
4046 else
4047 *commptr |= tolower(commptr[2]) - 'a' + 10;
ef416fc2 4048
b423cd4c 4049 _cups_strcpy(commptr + 1, commptr + 3);
ef416fc2 4050
b423cd4c 4051 /*
4052 * Check for a %00 and break if that is the case...
4053 */
ef416fc2 4054
b423cd4c 4055 if (!*commptr)
4056 break;
4057 }
ef416fc2 4058 }
4059 }
4060
4061 argv[argc] = NULL;
4062
ef416fc2 4063 /*
4064 * Setup the environment variables as needed...
4065 */
4066
4067 if (con->language)
4068 snprintf(lang, sizeof(lang), "LANG=%s.UTF-8", con->language->language);
4069 else
4070 strcpy(lang, "LANG=C");
4071
4072 strcpy(remote_addr, "REMOTE_ADDR=");
4073 httpAddrString(con->http.hostaddr, remote_addr + 12,
4074 sizeof(remote_addr) - 12);
4075
4076 snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
4077 con->http.hostname);
4078
4079 snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
4080 if ((uriptr = strchr(script_name, '?')) != NULL)
4081 *uriptr = '\0';
4082
4083 sprintf(server_port, "SERVER_PORT=%d", con->serverport);
4084
4085 snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
4086 con->servername);
4087
4088 envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
4089
4090 envp[envc ++] = lang;
4091 envp[envc ++] = "REDIRECT_STATUS=1";
4092 envp[envc ++] = server_name;
4093 envp[envc ++] = server_port;
4094 envp[envc ++] = remote_addr;
4095 envp[envc ++] = remote_host;
4096 envp[envc ++] = script_name;
4097
b423cd4c 4098 if (path_info[0])
4099 envp[envc ++] = path_info;
4100
ef416fc2 4101 if (con->username[0])
4102 {
4103 snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
4104
4105 envp[envc ++] = remote_user;
4106 }
4107
4108 if (con->http.version == HTTP_1_1)
4109 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
4110 else if (con->http.version == HTTP_1_0)
4111 envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
4112 else
4113 envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
4114
4115 if (con->http.cookie)
4116 {
4117 snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
4118 con->http.cookie);
4119 envp[envc ++] = http_cookie;
4120 }
4121
4122 if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
4123 {
4124 snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
4125 con->http.fields[HTTP_FIELD_USER_AGENT]);
4126 envp[envc ++] = http_user_agent;
4127 }
4128
4129 if (con->operation == HTTP_GET)
4130 {
ef416fc2 4131 envp[envc ++] = "REQUEST_METHOD=GET";
4132
b86bc4cf 4133 if (con->query_string)
ef416fc2 4134 {
4135 /*
4136 * Add GET form variables after ?...
4137 */
4138
b86bc4cf 4139 envp[envc ++] = con->query_string;
ef416fc2 4140 }
4141 }
4142 else
4143 {
e1d6a774 4144 sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
4145 CUPS_LLCAST con->bytes);
ef416fc2 4146 snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
4147 con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
4148
4149 envp[envc ++] = "REQUEST_METHOD=POST";
4150 envp[envc ++] = content_length;
4151 envp[envc ++] = content_type;
4152 }
4153
4154 /*
4155 * Tell the CGI if we are using encryption...
4156 */
4157
a74454a7 4158 if (con->http.tls)
ef416fc2 4159 envp[envc ++] = "HTTPS=ON";
4160
4161 /*
4162 * Terminate the environment array...
4163 */
4164
4165 envp[envc] = NULL;
4166
4167 if (LogLevel == CUPSD_LOG_DEBUG2)
4168 {
4169 for (i = 0; i < argc; i ++)
4170 cupsdLogMessage(CUPSD_LOG_DEBUG2,
4171 "pipe_command: argv[%d] = \"%s\"", i, argv[i]);
4172 for (i = 0; i < envc; i ++)
4173 cupsdLogMessage(CUPSD_LOG_DEBUG2,
4174 "pipe_command: envp[%d] = \"%s\"", i, envp[i]);
4175 }
4176
4177 /*
4178 * Create a pipe for the output...
4179 */
4180
4181 if (cupsdOpenPipe(fds))
4182 {
ef416fc2 4183 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create pipes for CGI %s - %s",
4184 argv[0], strerror(errno));
4185 return (0);
4186 }
4187
4188 /*
4189 * Then execute the command...
4190 */
4191
4192 if (cupsdStartProcess(command, argv, envp, infile, fds[1], CGIPipes[1],
4193 -1, root, &pid) < 0)
4194 {
4195 /*
4196 * Error - can't fork!
4197 */
4198
4199 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to fork for CGI %s - %s", argv[0],
4200 strerror(errno));
4201
4202 cupsdClosePipe(fds);
4203 pid = 0;
4204 }
4205 else
4206 {
4207 /*
4208 * Fork successful - return the PID...
4209 */
4210
4211 if (con->username[0])
4212 cupsdAddCert(pid, con->username);
4213
4214 cupsdLogMessage(CUPSD_LOG_DEBUG, "CGI %s started - PID = %d", command, pid);
4215
4216 *outfile = fds[0];
4217 close(fds[1]);
4218 }
4219
ef416fc2 4220 return (pid);
4221}
4222
4223
4224/*
a74454a7 4225 * 'write_file()' - Send a file via HTTP.
e1d6a774 4226 */
4227
4228static int /* O - 0 on failure, 1 on success */
a74454a7 4229write_file(cupsd_client_t *con, /* I - Client connection */
4230 http_status_t code, /* I - HTTP status */
4231 char *filename, /* I - Filename */
4232 char *type, /* I - File type */
4233 struct stat *filestats) /* O - File information */
e1d6a774 4234{
4235 con->file = open(filename, O_RDONLY);
4236
a74454a7 4237 cupsdLogMessage(CUPSD_LOG_DEBUG, "write_file: %d file=%d", con->http.fd,
e1d6a774 4238 con->file);
4239
4240 if (con->file < 0)
4241 return (0);
4242
4243 fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
4244
4245 con->pipe_pid = 0;
4246
4247 if (!cupsdSendHeader(con, code, type))
4248 return (0);
4249
4250 if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
4251 httpGetDateString(filestats->st_mtime)) < 0)
4252 return (0);
4253 if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
4254 CUPS_LLCAST filestats->st_size) < 0)
4255 return (0);
4256 if (httpPrintf(HTTP(con), "\r\n") < 0)
4257 return (0);
4258
07725fee 4259 if (cupsdFlushHeader(con) < 0)
4260 return (0);
d09495fa 4261
e1d6a774 4262 con->http.data_encoding = HTTP_ENCODE_LENGTH;
4263 con->http.data_remaining = filestats->st_size;
4264
4265 if (con->http.data_remaining <= INT_MAX)
4266 con->http._data_remaining = con->http.data_remaining;
4267 else
4268 con->http._data_remaining = INT_MAX;
4269
4270 cupsdLogMessage(CUPSD_LOG_DEBUG2,
a74454a7 4271 "write_file: Adding fd %d to OutputSet...", con->http.fd);
e1d6a774 4272
4273 FD_SET(con->http.fd, OutputSet);
4274
4275 return (1);
4276}
4277
4278
4279/*
b86bc4cf 4280 * End of "$Id: client.c 6247 2007-02-07 20:54:37Z mike $".
ef416fc2 4281 */
Unnamed repository; edit this file 'description' to name the repository.