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Attempt to fix crash seen with new CUPS async printcap loading code.
[Samba/bb.git] / source3 / printing / print_cups.c
blobecdd0e4f3839d1428d4cacbd010c86de61320b03
1 /*
2 * Support code for the Common UNIX Printing System ("CUPS")
3 *
4 * Copyright 1999-2003 by Michael R Sweet.
5 * Copyright 2008 Jeremy Allison.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
19 */
20
21 /*
22 * JRA. Converted to utf8 pull/push.
23 */
24
25 #include "includes.h"
26 #include "printing.h"
27
28 #ifdef HAVE_CUPS
29 #include <cups/cups.h>
30 #include <cups/language.h>
31
32 static SIG_ATOMIC_T gotalarm;
33
34 /***************************************************************
35 Signal function to tell us we timed out.
36 ****************************************************************/
37
38 static void gotalarm_sig(void)
39 {
40 gotalarm = 1;
41 }
42
43 extern userdom_struct current_user_info;
44
45 /*
46 * 'cups_passwd_cb()' - The CUPS password callback...
47 */
48
49 static const char * /* O - Password or NULL */
50 cups_passwd_cb(const char *prompt) /* I - Prompt */
51 {
52 /*
53 * Always return NULL to indicate that no password is available...
54 */
55
56 return (NULL);
57 }
58
59 static http_t *cups_connect(TALLOC_CTX *frame)
60 {
61 http_t *http = NULL;
62 char *server = NULL, *p = NULL;
63 int port;
64 int timeout = lp_cups_connection_timeout();
65 size_t size;
66
67 if (lp_cups_server() != NULL && strlen(lp_cups_server()) > 0) {
68 if (!push_utf8_talloc(frame, &server, lp_cups_server(), &size)) {
69 return NULL;
70 }
71 } else {
72 server = talloc_strdup(frame,cupsServer());
73 }
74 if (!server) {
75 return NULL;
76 }
77
78 p = strchr(server, ':');
79 if (p) {
80 port = atoi(p+1);
81 *p = '\0';
82 } else {
83 port = ippPort();
84 }
85
86 DEBUG(10, ("connecting to cups server %s:%d\n",
87 server, port));
88
89 gotalarm = 0;
90
91 if (timeout) {
92 CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
93 alarm(timeout);
94 }
95
96 http = httpConnect(server, port);
97
98 CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
99 alarm(0);
100
101 if (http == NULL) {
102 DEBUG(0,("Unable to connect to CUPS server %s:%d - %s\n",
103 server, port, strerror(errno)));
104 }
105
106 return http;
107 }
108
109 static void send_pcap_info(const char *name, const char *info, void *pd)
110 {
111 int fd = *(int *)pd;
112 size_t namelen = name ? strlen(name)+1 : 0;
113 size_t infolen = info ? strlen(info)+1 : 0;
114
115 DEBUG(11,("send_pcap_info: writing namelen %u\n", (unsigned int)namelen));
116 if (sys_write(fd, &namelen, sizeof(namelen)) != sizeof(namelen)) {
117 DEBUG(10,("send_pcap_info: namelen write failed %s\n",
118 strerror(errno)));
119 return;
120 }
121 DEBUG(11,("send_pcap_info: writing infolen %u\n", (unsigned int)infolen));
122 if (sys_write(fd, &infolen, sizeof(infolen)) != sizeof(infolen)) {
123 DEBUG(10,("send_pcap_info: infolen write failed %s\n",
124 strerror(errno)));
125 return;
126 }
127 if (namelen) {
128 DEBUG(11,("send_pcap_info: writing name %s\n", name));
129 if (sys_write(fd, name, namelen) != namelen) {
130 DEBUG(10,("send_pcap_info: name write failed %s\n",
131 strerror(errno)));
132 return;
133 }
134 }
135 if (infolen) {
136 DEBUG(11,("send_pcap_info: writing info %s\n", info));
137 if (sys_write(fd, info, infolen) != infolen) {
138 DEBUG(10,("send_pcap_info: info write failed %s\n",
139 strerror(errno)));
140 return;
141 }
142 }
143 }
144
145 static bool cups_cache_reload_async(int fd)
146 {
147 TALLOC_CTX *frame = talloc_stackframe();
148 struct pcap_cache *tmp_pcap_cache = NULL;
149 http_t *http = NULL; /* HTTP connection to server */
150 ipp_t *request = NULL, /* IPP Request */
151 *response = NULL; /* IPP Response */
152 ipp_attribute_t *attr; /* Current attribute */
153 cups_lang_t *language = NULL; /* Default language */
154 char *name, /* printer-name attribute */
155 *info; /* printer-info attribute */
156 static const char *requested[] =/* Requested attributes */
157 {
158 "printer-name",
159 "printer-info"
160 };
161 bool ret = False;
162 size_t size;
163
164 DEBUG(5, ("reloading cups printcap cache\n"));
165
166 /*
167 * Make sure we don't ask for passwords...
168 */
169
170 cupsSetPasswordCB(cups_passwd_cb);
171
172 /*
173 * Try to connect to the server...
174 */
175
176 if ((http = cups_connect(frame)) == NULL) {
177 goto out;
178 }
179
180 /*
181 * Build a CUPS_GET_PRINTERS request, which requires the following
182 * attributes:
183 *
184 * attributes-charset
185 * attributes-natural-language
186 * requested-attributes
187 */
188
189 request = ippNew();
190
191 request->request.op.operation_id = CUPS_GET_PRINTERS;
192 request->request.op.request_id = 1;
193
194 language = cupsLangDefault();
195
196 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
197 "attributes-charset", NULL, "utf-8");
198
199 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
200 "attributes-natural-language", NULL, language->language);
201
202 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
203 "requested-attributes",
204 (sizeof(requested) / sizeof(requested[0])),
205 NULL, requested);
206
207 /*
208 * Do the request and get back a response...
209 */
210
211 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
212 DEBUG(0,("Unable to get printer list - %s\n",
213 ippErrorString(cupsLastError())));
214 goto out;
215 }
216
217 for (attr = response->attrs; attr != NULL;) {
218 /*
219 * Skip leading attributes until we hit a printer...
220 */
221
222 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
223 attr = attr->next;
224
225 if (attr == NULL)
226 break;
227
228 /*
229 * Pull the needed attributes from this printer...
230 */
231
232 name = NULL;
233 info = NULL;
234
235 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER) {
236 if (strcmp(attr->name, "printer-name") == 0 &&
237 attr->value_tag == IPP_TAG_NAME) {
238 if (!pull_utf8_talloc(frame,
239 &name,
240 attr->values[0].string.text,
241 &size)) {
242 goto out;
243 }
244 }
245
246 if (strcmp(attr->name, "printer-info") == 0 &&
247 attr->value_tag == IPP_TAG_TEXT) {
248 if (!pull_utf8_talloc(frame,
249 &info,
250 attr->values[0].string.text,
251 &size)) {
252 goto out;
253 }
254 }
255
256 attr = attr->next;
257 }
258
259 /*
260 * See if we have everything needed...
261 */
262
263 if (name == NULL)
264 break;
265
266 if (!pcap_cache_add_specific(&tmp_pcap_cache, name, info)) {
267 goto out;
268 }
269 }
270
271 ippDelete(response);
272 response = NULL;
273
274 /*
275 * Build a CUPS_GET_CLASSES request, which requires the following
276 * attributes:
277 *
278 * attributes-charset
279 * attributes-natural-language
280 * requested-attributes
281 */
282
283 request = ippNew();
284
285 request->request.op.operation_id = CUPS_GET_CLASSES;
286 request->request.op.request_id = 1;
287
288 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
289 "attributes-charset", NULL, "utf-8");
290
291 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
292 "attributes-natural-language", NULL, language->language);
293
294 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
295 "requested-attributes",
296 (sizeof(requested) / sizeof(requested[0])),
297 NULL, requested);
298
299 /*
300 * Do the request and get back a response...
301 */
302
303 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
304 DEBUG(0,("Unable to get printer list - %s\n",
305 ippErrorString(cupsLastError())));
306 goto out;
307 }
308
309 for (attr = response->attrs; attr != NULL;) {
310 /*
311 * Skip leading attributes until we hit a printer...
312 */
313
314 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
315 attr = attr->next;
316
317 if (attr == NULL)
318 break;
319
320 /*
321 * Pull the needed attributes from this printer...
322 */
323
324 name = NULL;
325 info = NULL;
326
327 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER) {
328 if (strcmp(attr->name, "printer-name") == 0 &&
329 attr->value_tag == IPP_TAG_NAME) {
330 if (!pull_utf8_talloc(frame,
331 &name,
332 attr->values[0].string.text,
333 &size)) {
334 goto out;
335 }
336 }
337
338 if (strcmp(attr->name, "printer-info") == 0 &&
339 attr->value_tag == IPP_TAG_TEXT) {
340 if (!pull_utf8_talloc(frame,
341 &info,
342 attr->values[0].string.text,
343 &size)) {
344 goto out;
345 }
346 }
347
348 attr = attr->next;
349 }
350
351 /*
352 * See if we have everything needed...
353 */
354
355 if (name == NULL)
356 break;
357
358 if (!pcap_cache_add_specific(&tmp_pcap_cache, name, info)) {
359 goto out;
360 }
361 }
362
363 ret = True;
364
365 out:
366 if (response)
367 ippDelete(response);
368
369 if (language)
370 cupsLangFree(language);
371
372 if (http)
373 httpClose(http);
374
375 /* Send all the entries up the pipe. */
376 if (tmp_pcap_cache) {
377 pcap_printer_fn_specific(tmp_pcap_cache,
378 send_pcap_info,
379 (void *)&fd);
380
381 pcap_cache_destroy_specific(&tmp_pcap_cache);
382 }
383 TALLOC_FREE(frame);
384 return ret;
385 }
386
387 static struct pcap_cache *local_pcap_copy;
388 struct fd_event *cache_fd_event;
389
390 static bool cups_pcap_load_async(int *pfd)
391 {
392 int fds[2];
393 pid_t pid;
394
395 *pfd = -1;
396
397 if (cache_fd_event) {
398 DEBUG(3,("cups_pcap_load_async: already waiting for "
399 "a refresh event\n" ));
400 return false;
401 }
402
403 DEBUG(5,("cups_pcap_load_async: asynchronously loading cups printers\n"));
404
405 if (pipe(fds) == -1) {
406 return false;
407 }
408
409 pid = sys_fork();
410 if (pid == (pid_t)-1) {
411 DEBUG(10,("cups_pcap_load_async: fork failed %s\n",
412 strerror(errno) ));
413 close(fds[0]);
414 close(fds[1]);
415 return false;
416 }
417
418 if (pid) {
419 DEBUG(10,("cups_pcap_load_async: child pid = %u\n",
420 (unsigned int)pid ));
421 /* Parent. */
422 close(fds[1]);
423 *pfd = fds[0];
424 return true;
425 }
426
427 /* Child. */
428
429 close_all_print_db();
430
431 if (!reinit_after_fork(smbd_messaging_context(),
432 smbd_event_context(), true)) {
433 DEBUG(0,("cups_pcap_load_async: reinit_after_fork() failed\n"));
434 smb_panic("cups_pcap_load_async: reinit_after_fork() failed");
435 }
436
437 close(fds[0]);
438 cups_cache_reload_async(fds[1]);
439 close(fds[1]);
440 _exit(0);
441 }
442
443 static void cups_async_callback(struct event_context *event_ctx,
444 struct fd_event *event,
445 uint16 flags,
446 void *p)
447 {
448 TALLOC_CTX *frame = talloc_stackframe();
449 int fd = *(int *)p;
450 struct pcap_cache *tmp_pcap_cache = NULL;
451
452 DEBUG(5,("cups_async_callback: callback received for printer data. "
453 "fd = %d\n", fd));
454
455 while (1) {
456 char *name = NULL, *info = NULL;
457 size_t namelen = 0, infolen = 0;
458 ssize_t ret = -1;
459
460 ret = sys_read(fd, &namelen, sizeof(namelen));
461 if (ret == 0) {
462 /* EOF */
463 break;
464 }
465 if (ret != sizeof(namelen)) {
466 DEBUG(10,("cups_async_callback: namelen read failed %d %s\n",
467 errno, strerror(errno)));
468 break;
469 }
470
471 DEBUG(11,("cups_async_callback: read namelen %u\n",
472 (unsigned int)namelen));
473
474 ret = sys_read(fd, &infolen, sizeof(infolen));
475 if (ret == 0) {
476 /* EOF */
477 break;
478 }
479 if (ret != sizeof(infolen)) {
480 DEBUG(10,("cups_async_callback: infolen read failed %s\n",
481 strerror(errno)));
482 break;
483 }
484
485 DEBUG(11,("cups_async_callback: read infolen %u\n",
486 (unsigned int)infolen));
487
488 if (namelen) {
489 name = TALLOC_ARRAY(frame, char, namelen);
490 if (!name) {
491 break;
492 }
493 ret = sys_read(fd, name, namelen);
494 if (ret == 0) {
495 /* EOF */
496 break;
497 }
498 if (ret != namelen) {
499 DEBUG(10,("cups_async_callback: name read failed %s\n",
500 strerror(errno)));
501 break;
502 }
503 DEBUG(11,("cups_async_callback: read name %s\n",
504 name));
505 } else {
506 name = NULL;
507 }
508 if (infolen) {
509 info = TALLOC_ARRAY(frame, char, infolen);
510 if (!info) {
511 break;
512 }
513 ret = sys_read(fd, info, infolen);
514 if (ret == 0) {
515 /* EOF */
516 break;
517 }
518 if (ret != infolen) {
519 DEBUG(10,("cups_async_callback: info read failed %s\n",
520 strerror(errno)));
521 break;
522 }
523 DEBUG(11,("cups_async_callback: read info %s\n",
524 info));
525 } else {
526 info = NULL;
527 }
528
529 /* Add to our local pcap cache. */
530 pcap_cache_add_specific(&tmp_pcap_cache, name, info);
531 TALLOC_FREE(name);
532 TALLOC_FREE(info);
533 }
534
535 TALLOC_FREE(frame);
536 if (tmp_pcap_cache) {
537 /* We got a namelist, replace our local cache. */
538 pcap_cache_destroy_specific(&local_pcap_copy);
539 local_pcap_copy = tmp_pcap_cache;
540
541 /* And the systemwide pcap cache. */
542 pcap_cache_replace(local_pcap_copy);
543 } else {
544 DEBUG(2,("cups_async_callback: failed to read a new "
545 "printer list\n"));
546 }
547 close(fd);
548 TALLOC_FREE(p);
549 TALLOC_FREE(cache_fd_event);
550 }
551
552 bool cups_cache_reload(void)
553 {
554 int *p_pipe_fd = TALLOC_P(NULL, int);
555
556 if (!p_pipe_fd) {
557 return false;
558 }
559
560 *p_pipe_fd = -1;
561
562 /* Set up an async refresh. */
563 if (!cups_pcap_load_async(p_pipe_fd)) {
564 return false;
565 }
566 if (!local_pcap_copy) {
567 /* We have no local cache, wait directly for
568 * async refresh to complete.
569 */
570 DEBUG(10,("cups_cache_reload: sync read on fd %d\n",
571 *p_pipe_fd ));
572
573 cups_async_callback(smbd_event_context(),
574 NULL,
575 EVENT_FD_READ,
576 (void *)p_pipe_fd);
577 if (!local_pcap_copy) {
578 return false;
579 }
580 } else {
581 /* Replace the system cache with our
582 * local copy. */
583 pcap_cache_replace(local_pcap_copy);
584
585 DEBUG(10,("cups_cache_reload: async read on fd %d\n",
586 *p_pipe_fd ));
587
588 /* Trigger an event when the pipe can be read. */
589 cache_fd_event = event_add_fd(smbd_event_context(),
590 NULL, *p_pipe_fd,
591 EVENT_FD_READ,
592 cups_async_callback,
593 (void *)p_pipe_fd);
594 if (!cache_fd_event) {
595 close(*p_pipe_fd);
596 TALLOC_FREE(p_pipe_fd);
597 return false;
598 }
599 }
600 return true;
601 }
602
603 /*
604 * 'cups_job_delete()' - Delete a job.
605 */
606
607 static int cups_job_delete(const char *sharename, const char *lprm_command, struct printjob *pjob)
608 {
609 TALLOC_CTX *frame = talloc_stackframe();
610 int ret = 1; /* Return value */
611 http_t *http = NULL; /* HTTP connection to server */
612 ipp_t *request = NULL, /* IPP Request */
613 *response = NULL; /* IPP Response */
614 cups_lang_t *language = NULL; /* Default language */
615 char *user = NULL;
616 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
617 size_t size;
618
619 DEBUG(5,("cups_job_delete(%s, %p (%d))\n", sharename, pjob, pjob->sysjob));
620
621 /*
622 * Make sure we don't ask for passwords...
623 */
624
625 cupsSetPasswordCB(cups_passwd_cb);
626
627 /*
628 * Try to connect to the server...
629 */
630
631 if ((http = cups_connect(frame)) == NULL) {
632 goto out;
633 }
634
635 /*
636 * Build an IPP_CANCEL_JOB request, which requires the following
637 * attributes:
638 *
639 * attributes-charset
640 * attributes-natural-language
641 * job-uri
642 * requesting-user-name
643 */
644
645 request = ippNew();
646
647 request->request.op.operation_id = IPP_CANCEL_JOB;
648 request->request.op.request_id = 1;
649
650 language = cupsLangDefault();
651
652 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
653 "attributes-charset", NULL, "utf-8");
654
655 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
656 "attributes-natural-language", NULL, language->language);
657
658 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
659
660 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
661
662 if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
663 goto out;
664 }
665
666 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
667 NULL, user);
668
669 /*
670 * Do the request and get back a response...
671 */
672
673 if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
674 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
675 DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
676 ippErrorString(cupsLastError())));
677 } else {
678 ret = 0;
679 }
680 } else {
681 DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
682 ippErrorString(cupsLastError())));
683 }
684
685 out:
686 if (response)
687 ippDelete(response);
688
689 if (language)
690 cupsLangFree(language);
691
692 if (http)
693 httpClose(http);
694
695 TALLOC_FREE(frame);
696 return ret;
697 }
698
699
700 /*
701 * 'cups_job_pause()' - Pause a job.
702 */
703
704 static int cups_job_pause(int snum, struct printjob *pjob)
705 {
706 TALLOC_CTX *frame = talloc_stackframe();
707 int ret = 1; /* Return value */
708 http_t *http = NULL; /* HTTP connection to server */
709 ipp_t *request = NULL, /* IPP Request */
710 *response = NULL; /* IPP Response */
711 cups_lang_t *language = NULL; /* Default language */
712 char *user = NULL;
713 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
714 size_t size;
715
716 DEBUG(5,("cups_job_pause(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
717
718 /*
719 * Make sure we don't ask for passwords...
720 */
721
722 cupsSetPasswordCB(cups_passwd_cb);
723
724 /*
725 * Try to connect to the server...
726 */
727
728 if ((http = cups_connect(frame)) == NULL) {
729 goto out;
730 }
731
732 /*
733 * Build an IPP_HOLD_JOB request, which requires the following
734 * attributes:
735 *
736 * attributes-charset
737 * attributes-natural-language
738 * job-uri
739 * requesting-user-name
740 */
741
742 request = ippNew();
743
744 request->request.op.operation_id = IPP_HOLD_JOB;
745 request->request.op.request_id = 1;
746
747 language = cupsLangDefault();
748
749 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
750 "attributes-charset", NULL, "utf-8");
751
752 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
753 "attributes-natural-language", NULL, language->language);
754
755 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
756
757 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
758
759 if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
760 goto out;
761 }
762 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
763 NULL, user);
764
765 /*
766 * Do the request and get back a response...
767 */
768
769 if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
770 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
771 DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
772 ippErrorString(cupsLastError())));
773 } else {
774 ret = 0;
775 }
776 } else {
777 DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
778 ippErrorString(cupsLastError())));
779 }
780
781 out:
782 if (response)
783 ippDelete(response);
784
785 if (language)
786 cupsLangFree(language);
787
788 if (http)
789 httpClose(http);
790
791 TALLOC_FREE(frame);
792 return ret;
793 }
794
795
796 /*
797 * 'cups_job_resume()' - Resume a paused job.
798 */
799
800 static int cups_job_resume(int snum, struct printjob *pjob)
801 {
802 TALLOC_CTX *frame = talloc_stackframe();
803 int ret = 1; /* Return value */
804 http_t *http = NULL; /* HTTP connection to server */
805 ipp_t *request = NULL, /* IPP Request */
806 *response = NULL; /* IPP Response */
807 cups_lang_t *language = NULL; /* Default language */
808 char *user = NULL;
809 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
810 size_t size;
811
812 DEBUG(5,("cups_job_resume(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
813
814 /*
815 * Make sure we don't ask for passwords...
816 */
817
818 cupsSetPasswordCB(cups_passwd_cb);
819
820 /*
821 * Try to connect to the server...
822 */
823
824 if ((http = cups_connect(frame)) == NULL) {
825 goto out;
826 }
827
828 /*
829 * Build an IPP_RELEASE_JOB request, which requires the following
830 * attributes:
831 *
832 * attributes-charset
833 * attributes-natural-language
834 * job-uri
835 * requesting-user-name
836 */
837
838 request = ippNew();
839
840 request->request.op.operation_id = IPP_RELEASE_JOB;
841 request->request.op.request_id = 1;
842
843 language = cupsLangDefault();
844
845 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
846 "attributes-charset", NULL, "utf-8");
847
848 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
849 "attributes-natural-language", NULL, language->language);
850
851 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
852
853 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
854
855 if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
856 goto out;
857 }
858 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
859 NULL, user);
860
861 /*
862 * Do the request and get back a response...
863 */
864
865 if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
866 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
867 DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
868 ippErrorString(cupsLastError())));
869 } else {
870 ret = 0;
871 }
872 } else {
873 DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
874 ippErrorString(cupsLastError())));
875 }
876
877 out:
878 if (response)
879 ippDelete(response);
880
881 if (language)
882 cupsLangFree(language);
883
884 if (http)
885 httpClose(http);
886
887 TALLOC_FREE(frame);
888 return ret;
889 }
890
891
892 /*
893 * 'cups_job_submit()' - Submit a job for printing.
894 */
895
896 static int cups_job_submit(int snum, struct printjob *pjob)
897 {
898 TALLOC_CTX *frame = talloc_stackframe();
899 int ret = 1; /* Return value */
900 http_t *http = NULL; /* HTTP connection to server */
901 ipp_t *request = NULL, /* IPP Request */
902 *response = NULL; /* IPP Response */
903 cups_lang_t *language = NULL; /* Default language */
904 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
905 const char *clientname = NULL; /* hostname of client for job-originating-host attribute */
906 char *new_jobname = NULL;
907 int num_options = 0;
908 cups_option_t *options = NULL;
909 char *printername = NULL;
910 char *user = NULL;
911 char *jobname = NULL;
912 char *cupsoptions = NULL;
913 char *filename = NULL;
914 size_t size;
915 char addr[INET6_ADDRSTRLEN];
916
917 DEBUG(5,("cups_job_submit(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
918
919 /*
920 * Make sure we don't ask for passwords...
921 */
922
923 cupsSetPasswordCB(cups_passwd_cb);
924
925 /*
926 * Try to connect to the server...
927 */
928
929 if ((http = cups_connect(frame)) == NULL) {
930 goto out;
931 }
932
933 /*
934 * Build an IPP_PRINT_JOB request, which requires the following
935 * attributes:
936 *
937 * attributes-charset
938 * attributes-natural-language
939 * printer-uri
940 * requesting-user-name
941 * [document-data]
942 */
943
944 request = ippNew();
945
946 request->request.op.operation_id = IPP_PRINT_JOB;
947 request->request.op.request_id = 1;
948
949 language = cupsLangDefault();
950
951 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
952 "attributes-charset", NULL, "utf-8");
953
954 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
955 "attributes-natural-language", NULL, language->language);
956
957 if (!push_utf8_talloc(frame, &printername, PRINTERNAME(snum), &size)) {
958 goto out;
959 }
960 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
961 printername);
962
963 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
964 "printer-uri", NULL, uri);
965
966 if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
967 goto out;
968 }
969 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
970 NULL, user);
971
972 clientname = client_name(get_client_fd());
973 if (strcmp(clientname, "UNKNOWN") == 0) {
974 clientname = client_addr(get_client_fd(),addr,sizeof(addr));
975 }
976
977 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
978 "job-originating-host-name", NULL,
979 clientname);
980
981 if (!push_utf8_talloc(frame, &jobname, pjob->jobname, &size)) {
982 goto out;
983 }
984 new_jobname = talloc_asprintf(frame,
985 "%s%.8u %s", PRINT_SPOOL_PREFIX,
986 (unsigned int)pjob->smbjob,
987 jobname);
988 if (new_jobname == NULL) {
989 goto out;
990 }
991
992 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL,
993 new_jobname);
994
995 /*
996 * add any options defined in smb.conf
997 */
998
999 if (!push_utf8_talloc(frame, &cupsoptions, lp_cups_options(snum), &size)) {
1000 goto out;
1001 }
1002 num_options = 0;
1003 options = NULL;
1004 num_options = cupsParseOptions(cupsoptions, num_options, &options);
1005
1006 if ( num_options )
1007 cupsEncodeOptions(request, num_options, options);
1008
1009 /*
1010 * Do the request and get back a response...
1011 */
1012
1013 slprintf(uri, sizeof(uri) - 1, "/printers/%s", printername);
1014
1015 if (!push_utf8_talloc(frame, &filename, pjob->filename, &size)) {
1016 goto out;
1017 }
1018 if ((response = cupsDoFileRequest(http, request, uri, pjob->filename)) != NULL) {
1019 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1020 DEBUG(0,("Unable to print file to %s - %s\n", PRINTERNAME(snum),
1021 ippErrorString(cupsLastError())));
1022 } else {
1023 ret = 0;
1024 }
1025 } else {
1026 DEBUG(0,("Unable to print file to `%s' - %s\n", PRINTERNAME(snum),
1027 ippErrorString(cupsLastError())));
1028 }
1029
1030 if ( ret == 0 )
1031 unlink(pjob->filename);
1032 /* else print_job_end will do it for us */
1033
1034 out:
1035 if (response)
1036 ippDelete(response);
1037
1038 if (language)
1039 cupsLangFree(language);
1040
1041 if (http)
1042 httpClose(http);
1043
1044 TALLOC_FREE(frame);
1045
1046 return ret;
1047 }
1048
1049 /*
1050 * 'cups_queue_get()' - Get all the jobs in the print queue.
1051 */
1052
1053 static int cups_queue_get(const char *sharename,
1054 enum printing_types printing_type,
1055 char *lpq_command,
1056 print_queue_struct **q,
1057 print_status_struct *status)
1058 {
1059 TALLOC_CTX *frame = talloc_stackframe();
1060 char *printername = NULL;
1061 http_t *http = NULL; /* HTTP connection to server */
1062 ipp_t *request = NULL, /* IPP Request */
1063 *response = NULL; /* IPP Response */
1064 ipp_attribute_t *attr = NULL; /* Current attribute */
1065 cups_lang_t *language = NULL; /* Default language */
1066 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
1067 int qcount = 0, /* Number of active queue entries */
1068 qalloc = 0; /* Number of queue entries allocated */
1069 print_queue_struct *queue = NULL, /* Queue entries */
1070 *temp; /* Temporary pointer for queue */
1071 char *user_name = NULL, /* job-originating-user-name attribute */
1072 *job_name = NULL; /* job-name attribute */
1073 int job_id; /* job-id attribute */
1074 int job_k_octets; /* job-k-octets attribute */
1075 time_t job_time; /* time-at-creation attribute */
1076 ipp_jstate_t job_status; /* job-status attribute */
1077 int job_priority; /* job-priority attribute */
1078 size_t size;
1079 static const char *jattrs[] = /* Requested job attributes */
1080 {
1081 "job-id",
1082 "job-k-octets",
1083 "job-name",
1084 "job-originating-user-name",
1085 "job-priority",
1086 "job-state",
1087 "time-at-creation",
1088 };
1089 static const char *pattrs[] = /* Requested printer attributes */
1090 {
1091 "printer-state",
1092 "printer-state-message"
1093 };
1094
1095 *q = NULL;
1096
1097 /* HACK ALERT!!! The problem with support the 'printer name'
1098 option is that we key the tdb off the sharename. So we will
1099 overload the lpq_command string to pass in the printername
1100 (which is basically what we do for non-cups printers ... using
1101 the lpq_command to get the queue listing). */
1102
1103 if (!push_utf8_talloc(frame, &printername, lpq_command, &size)) {
1104 goto out;
1105 }
1106 DEBUG(5,("cups_queue_get(%s, %p, %p)\n", lpq_command, q, status));
1107
1108 /*
1109 * Make sure we don't ask for passwords...
1110 */
1111
1112 cupsSetPasswordCB(cups_passwd_cb);
1113
1114 /*
1115 * Try to connect to the server...
1116 */
1117
1118 if ((http = cups_connect(frame)) == NULL) {
1119 goto out;
1120 }
1121
1122 /*
1123 * Generate the printer URI...
1124 */
1125
1126 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", printername);
1127
1128 /*
1129 * Build an IPP_GET_JOBS request, which requires the following
1130 * attributes:
1131 *
1132 * attributes-charset
1133 * attributes-natural-language
1134 * requested-attributes
1135 * printer-uri
1136 */
1137
1138 request = ippNew();
1139
1140 request->request.op.operation_id = IPP_GET_JOBS;
1141 request->request.op.request_id = 1;
1142
1143 language = cupsLangDefault();
1144
1145 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1146 "attributes-charset", NULL, "utf-8");
1147
1148 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1149 "attributes-natural-language", NULL, language->language);
1150
1151 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1152 "requested-attributes",
1153 (sizeof(jattrs) / sizeof(jattrs[0])),
1154 NULL, jattrs);
1155
1156 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1157 "printer-uri", NULL, uri);
1158
1159 /*
1160 * Do the request and get back a response...
1161 */
1162
1163 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1164 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
1165 ippErrorString(cupsLastError())));
1166 goto out;
1167 }
1168
1169 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1170 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
1171 ippErrorString(response->request.status.status_code)));
1172 goto out;
1173 }
1174
1175 /*
1176 * Process the jobs...
1177 */
1178
1179 qcount = 0;
1180 qalloc = 0;
1181 queue = NULL;
1182
1183 for (attr = response->attrs; attr != NULL; attr = attr->next) {
1184 /*
1185 * Skip leading attributes until we hit a job...
1186 */
1187
1188 while (attr != NULL && attr->group_tag != IPP_TAG_JOB)
1189 attr = attr->next;
1190
1191 if (attr == NULL)
1192 break;
1193
1194 /*
1195 * Allocate memory as needed...
1196 */
1197 if (qcount >= qalloc) {
1198 qalloc += 16;
1199
1200 queue = SMB_REALLOC_ARRAY(queue, print_queue_struct, qalloc);
1201
1202 if (queue == NULL) {
1203 DEBUG(0,("cups_queue_get: Not enough memory!"));
1204 qcount = 0;
1205 goto out;
1206 }
1207 }
1208
1209 temp = queue + qcount;
1210 memset(temp, 0, sizeof(print_queue_struct));
1211
1212 /*
1213 * Pull the needed attributes from this job...
1214 */
1215
1216 job_id = 0;
1217 job_priority = 50;
1218 job_status = IPP_JOB_PENDING;
1219 job_time = 0;
1220 job_k_octets = 0;
1221 user_name = NULL;
1222 job_name = NULL;
1223
1224 while (attr != NULL && attr->group_tag == IPP_TAG_JOB) {
1225 if (attr->name == NULL) {
1226 attr = attr->next;
1227 break;
1228 }
1229
1230 if (strcmp(attr->name, "job-id") == 0 &&
1231 attr->value_tag == IPP_TAG_INTEGER)
1232 job_id = attr->values[0].integer;
1233
1234 if (strcmp(attr->name, "job-k-octets") == 0 &&
1235 attr->value_tag == IPP_TAG_INTEGER)
1236 job_k_octets = attr->values[0].integer;
1237
1238 if (strcmp(attr->name, "job-priority") == 0 &&
1239 attr->value_tag == IPP_TAG_INTEGER)
1240 job_priority = attr->values[0].integer;
1241
1242 if (strcmp(attr->name, "job-state") == 0 &&
1243 attr->value_tag == IPP_TAG_ENUM)
1244 job_status = (ipp_jstate_t)(attr->values[0].integer);
1245
1246 if (strcmp(attr->name, "time-at-creation") == 0 &&
1247 attr->value_tag == IPP_TAG_INTEGER)
1248 job_time = attr->values[0].integer;
1249
1250 if (strcmp(attr->name, "job-name") == 0 &&
1251 attr->value_tag == IPP_TAG_NAME) {
1252 if (!pull_utf8_talloc(frame,
1253 &job_name,
1254 attr->values[0].string.text,
1255 &size)) {
1256 goto out;
1257 }
1258 }
1259
1260 if (strcmp(attr->name, "job-originating-user-name") == 0 &&
1261 attr->value_tag == IPP_TAG_NAME) {
1262 if (!pull_utf8_talloc(frame,
1263 &user_name,
1264 attr->values[0].string.text,
1265 &size)) {
1266 goto out;
1267 }
1268 }
1269
1270 attr = attr->next;
1271 }
1272
1273 /*
1274 * See if we have everything needed...
1275 */
1276
1277 if (user_name == NULL || job_name == NULL || job_id == 0) {
1278 if (attr == NULL)
1279 break;
1280 else
1281 continue;
1282 }
1283
1284 temp->job = job_id;
1285 temp->size = job_k_octets * 1024;
1286 temp->status = job_status == IPP_JOB_PENDING ? LPQ_QUEUED :
1287 job_status == IPP_JOB_STOPPED ? LPQ_PAUSED :
1288 job_status == IPP_JOB_HELD ? LPQ_PAUSED :
1289 LPQ_PRINTING;
1290 temp->priority = job_priority;
1291 temp->time = job_time;
1292 strlcpy(temp->fs_user, user_name, sizeof(temp->fs_user));
1293 strlcpy(temp->fs_file, job_name, sizeof(temp->fs_file));
1294
1295 qcount ++;
1296
1297 if (attr == NULL)
1298 break;
1299 }
1300
1301 ippDelete(response);
1302 response = NULL;
1303
1304 /*
1305 * Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the
1306 * following attributes:
1307 *
1308 * attributes-charset
1309 * attributes-natural-language
1310 * requested-attributes
1311 * printer-uri
1312 */
1313
1314 request = ippNew();
1315
1316 request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1317 request->request.op.request_id = 1;
1318
1319 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1320 "attributes-charset", NULL, "utf-8");
1321
1322 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1323 "attributes-natural-language", NULL, language->language);
1324
1325 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1326 "requested-attributes",
1327 (sizeof(pattrs) / sizeof(pattrs[0])),
1328 NULL, pattrs);
1329
1330 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1331 "printer-uri", NULL, uri);
1332
1333 /*
1334 * Do the request and get back a response...
1335 */
1336
1337 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1338 DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
1339 ippErrorString(cupsLastError())));
1340 *q = queue;
1341 goto out;
1342 }
1343
1344 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1345 DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
1346 ippErrorString(response->request.status.status_code)));
1347 *q = queue;
1348 goto out;
1349 }
1350
1351 /*
1352 * Get the current printer status and convert it to the SAMBA values.
1353 */
1354
1355 if ((attr = ippFindAttribute(response, "printer-state", IPP_TAG_ENUM)) != NULL) {
1356 if (attr->values[0].integer == IPP_PRINTER_STOPPED)
1357 status->status = LPSTAT_STOPPED;
1358 else
1359 status->status = LPSTAT_OK;
1360 }
1361
1362 if ((attr = ippFindAttribute(response, "printer-state-message",
1363 IPP_TAG_TEXT)) != NULL) {
1364 char *msg = NULL;
1365 if (!pull_utf8_talloc(frame, &msg,
1366 attr->values[0].string.text,
1367 &size)) {
1368 goto out;
1369 }
1370 fstrcpy(status->message, msg);
1371 }
1372
1373 /*
1374 * Return the job queue...
1375 */
1376
1377 *q = queue;
1378
1379 out:
1380 if (response)
1381 ippDelete(response);
1382
1383 if (language)
1384 cupsLangFree(language);
1385
1386 if (http)
1387 httpClose(http);
1388
1389 TALLOC_FREE(frame);
1390 return qcount;
1391 }
1392
1393
1394 /*
1395 * 'cups_queue_pause()' - Pause a print queue.
1396 */
1397
1398 static int cups_queue_pause(int snum)
1399 {
1400 TALLOC_CTX *frame = talloc_stackframe();
1401 int ret = 1; /* Return value */
1402 http_t *http = NULL; /* HTTP connection to server */
1403 ipp_t *request = NULL, /* IPP Request */
1404 *response = NULL; /* IPP Response */
1405 cups_lang_t *language = NULL; /* Default language */
1406 char *printername = NULL;
1407 char *username = NULL;
1408 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
1409 size_t size;
1410
1411 DEBUG(5,("cups_queue_pause(%d)\n", snum));
1412
1413 /*
1414 * Make sure we don't ask for passwords...
1415 */
1416
1417 cupsSetPasswordCB(cups_passwd_cb);
1418
1419 /*
1420 * Try to connect to the server...
1421 */
1422
1423 if ((http = cups_connect(frame)) == NULL) {
1424 goto out;
1425 }
1426
1427 /*
1428 * Build an IPP_PAUSE_PRINTER request, which requires the following
1429 * attributes:
1430 *
1431 * attributes-charset
1432 * attributes-natural-language
1433 * printer-uri
1434 * requesting-user-name
1435 */
1436
1437 request = ippNew();
1438
1439 request->request.op.operation_id = IPP_PAUSE_PRINTER;
1440 request->request.op.request_id = 1;
1441
1442 language = cupsLangDefault();
1443
1444 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1445 "attributes-charset", NULL, "utf-8");
1446
1447 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1448 "attributes-natural-language", NULL, language->language);
1449
1450 if (!push_utf8_talloc(frame, &printername, PRINTERNAME(snum), &size)) {
1451 goto out;
1452 }
1453 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1454 printername);
1455
1456 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1457
1458 if (!push_utf8_talloc(frame, &username, current_user_info.unix_name, &size)) {
1459 goto out;
1460 }
1461 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1462 NULL, username);
1463
1464 /*
1465 * Do the request and get back a response...
1466 */
1467
1468 if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) {
1469 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1470 DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1471 ippErrorString(cupsLastError())));
1472 } else {
1473 ret = 0;
1474 }
1475 } else {
1476 DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1477 ippErrorString(cupsLastError())));
1478 }
1479
1480 out:
1481 if (response)
1482 ippDelete(response);
1483
1484 if (language)
1485 cupsLangFree(language);
1486
1487 if (http)
1488 httpClose(http);
1489
1490 TALLOC_FREE(frame);
1491 return ret;
1492 }
1493
1494
1495 /*
1496 * 'cups_queue_resume()' - Restart a print queue.
1497 */
1498
1499 static int cups_queue_resume(int snum)
1500 {
1501 TALLOC_CTX *frame = talloc_stackframe();
1502 int ret = 1; /* Return value */
1503 http_t *http = NULL; /* HTTP connection to server */
1504 ipp_t *request = NULL, /* IPP Request */
1505 *response = NULL; /* IPP Response */
1506 cups_lang_t *language = NULL; /* Default language */
1507 char *printername = NULL;
1508 char *username = NULL;
1509 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
1510 size_t size;
1511
1512 DEBUG(5,("cups_queue_resume(%d)\n", snum));
1513
1514 /*
1515 * Make sure we don't ask for passwords...
1516 */
1517
1518 cupsSetPasswordCB(cups_passwd_cb);
1519
1520 /*
1521 * Try to connect to the server...
1522 */
1523
1524 if ((http = cups_connect(frame)) == NULL) {
1525 goto out;
1526 }
1527
1528 /*
1529 * Build an IPP_RESUME_PRINTER request, which requires the following
1530 * attributes:
1531 *
1532 * attributes-charset
1533 * attributes-natural-language
1534 * printer-uri
1535 * requesting-user-name
1536 */
1537
1538 request = ippNew();
1539
1540 request->request.op.operation_id = IPP_RESUME_PRINTER;
1541 request->request.op.request_id = 1;
1542
1543 language = cupsLangDefault();
1544
1545 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1546 "attributes-charset", NULL, "utf-8");
1547
1548 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1549 "attributes-natural-language", NULL, language->language);
1550
1551 if (!push_utf8_talloc(frame, &printername, PRINTERNAME(snum), &size)) {
1552 goto out;
1553 }
1554 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1555 printername);
1556
1557 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1558
1559 if (!push_utf8_talloc(frame, &username, current_user_info.unix_name, &size)) {
1560 goto out;
1561 }
1562 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1563 NULL, username);
1564
1565 /*
1566 * Do the request and get back a response...
1567 */
1568
1569 if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) {
1570 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1571 DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1572 ippErrorString(cupsLastError())));
1573 } else {
1574 ret = 0;
1575 }
1576 } else {
1577 DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1578 ippErrorString(cupsLastError())));
1579 }
1580
1581 out:
1582 if (response)
1583 ippDelete(response);
1584
1585 if (language)
1586 cupsLangFree(language);
1587
1588 if (http)
1589 httpClose(http);
1590
1591 TALLOC_FREE(frame);
1592 return ret;
1593 }
1594
1595 /*******************************************************************
1596 * CUPS printing interface definitions...
1597 ******************************************************************/
1598
1599 struct printif cups_printif =
1600 {
1601 PRINT_CUPS,
1602 cups_queue_get,
1603 cups_queue_pause,
1604 cups_queue_resume,
1605 cups_job_delete,
1606 cups_job_pause,
1607 cups_job_resume,
1608 cups_job_submit,
1609 };
1610
1611 bool cups_pull_comment_location(NT_PRINTER_INFO_LEVEL_2 *printer)
1612 {
1613 TALLOC_CTX *frame = talloc_stackframe();
1614 http_t *http = NULL; /* HTTP connection to server */
1615 ipp_t *request = NULL, /* IPP Request */
1616 *response = NULL; /* IPP Response */
1617 ipp_attribute_t *attr; /* Current attribute */
1618 cups_lang_t *language = NULL; /* Default language */
1619 char uri[HTTP_MAX_URI];
1620 char *server = NULL;
1621 char *sharename = NULL;
1622 char *name = NULL;
1623 static const char *requested[] =/* Requested attributes */
1624 {
1625 "printer-name",
1626 "printer-info",
1627 "printer-location"
1628 };
1629 bool ret = False;
1630 size_t size;
1631
1632 DEBUG(5, ("pulling %s location\n", printer->sharename));
1633
1634 /*
1635 * Make sure we don't ask for passwords...
1636 */
1637
1638 cupsSetPasswordCB(cups_passwd_cb);
1639
1640 /*
1641 * Try to connect to the server...
1642 */
1643
1644 if ((http = cups_connect(frame)) == NULL) {
1645 goto out;
1646 }
1647
1648 request = ippNew();
1649
1650 request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1651 request->request.op.request_id = 1;
1652
1653 language = cupsLangDefault();
1654
1655 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1656 "attributes-charset", NULL, "utf-8");
1657
1658 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1659 "attributes-natural-language", NULL, language->language);
1660
1661 if (lp_cups_server() != NULL && strlen(lp_cups_server()) > 0) {
1662 if (!push_utf8_talloc(frame, &server, lp_cups_server(), &size)) {
1663 goto out;
1664 }
1665 } else {
1666 server = talloc_strdup(frame,cupsServer());
1667 }
1668 if (server) {
1669 goto out;
1670 }
1671 if (!push_utf8_talloc(frame, &sharename, printer->sharename, &size)) {
1672 goto out;
1673 }
1674 slprintf(uri, sizeof(uri) - 1, "ipp://%s/printers/%s",
1675 server, sharename);
1676
1677 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1678 "printer-uri", NULL, uri);
1679
1680 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1681 "requested-attributes",
1682 (sizeof(requested) / sizeof(requested[0])),
1683 NULL, requested);
1684
1685 /*
1686 * Do the request and get back a response...
1687 */
1688
1689 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1690 DEBUG(0,("Unable to get printer attributes - %s\n",
1691 ippErrorString(cupsLastError())));
1692 goto out;
1693 }
1694
1695 for (attr = response->attrs; attr != NULL;) {
1696 /*
1697 * Skip leading attributes until we hit a printer...
1698 */
1699
1700 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
1701 attr = attr->next;
1702
1703 if (attr == NULL)
1704 break;
1705
1706 /*
1707 * Pull the needed attributes from this printer...
1708 */
1709
1710 while ( attr && (attr->group_tag == IPP_TAG_PRINTER) ) {
1711 if (strcmp(attr->name, "printer-name") == 0 &&
1712 attr->value_tag == IPP_TAG_NAME) {
1713 if (!pull_utf8_talloc(frame,
1714 &name,
1715 attr->values[0].string.text,
1716 &size)) {
1717 goto out;
1718 }
1719 }
1720
1721 /* Grab the comment if we don't have one */
1722 if ( (strcmp(attr->name, "printer-info") == 0)
1723 && (attr->value_tag == IPP_TAG_TEXT)
1724 && !strlen(printer->comment) )
1725 {
1726 char *comment = NULL;
1727 if (!pull_utf8_talloc(frame,
1728 &comment,
1729 attr->values[0].string.text,
1730 &size)) {
1731 goto out;
1732 }
1733 DEBUG(5,("cups_pull_comment_location: Using cups comment: %s\n",
1734 comment));
1735 strlcpy(printer->comment,
1736 comment,
1737 sizeof(printer->comment));
1738 }
1739
1740 /* Grab the location if we don't have one */
1741 if ( (strcmp(attr->name, "printer-location") == 0)
1742 && (attr->value_tag == IPP_TAG_TEXT)
1743 && !strlen(printer->location) )
1744 {
1745 char *location = NULL;
1746 if (!pull_utf8_talloc(frame,
1747 &location,
1748 attr->values[0].string.text,
1749 &size)) {
1750 goto out;
1751 }
1752 DEBUG(5,("cups_pull_comment_location: Using cups location: %s\n",
1753 location));
1754 strlcpy(printer->location,
1755 location,
1756 sizeof(printer->location));
1757 }
1758
1759 attr = attr->next;
1760 }
1761
1762 /*
1763 * We have everything needed...
1764 */
1765
1766 if (name != NULL)
1767 break;
1768 }
1769
1770 ret = True;
1771
1772 out:
1773 if (response)
1774 ippDelete(response);
1775
1776 if (request) {
1777 ippDelete(request);
1778 }
1779
1780 if (language)
1781 cupsLangFree(language);
1782
1783 if (http)
1784 httpClose(http);
1785
1786 TALLOC_FREE(frame);
1787 return ret;
1788 }
1789
1790 #else
1791 /* this keeps fussy compilers happy */
1792 void print_cups_dummy(void);
1793 void print_cups_dummy(void) {}
1794 #endif /* HAVE_CUPS */