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s3-printing: an empty cups printer list is treated as an error
[Samba.git] / source3 / printing / print_cups.c
blob2b3b8ed8e3fa4475dffe8851701a4dc02ab57da4
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 (!NT_STATUS_IS_OK(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 struct cups_async_cb_args {
444 int pipe_fd;
445 void (*post_cache_fill_fn)(void);
446 };
447
448 static void cups_async_callback(struct event_context *event_ctx,
449 struct fd_event *event,
450 uint16 flags,
451 void *p)
452 {
453 TALLOC_CTX *frame = talloc_stackframe();
454 struct cups_async_cb_args *cb_args = (struct cups_async_cb_args *)p;
455 int fd = cb_args->pipe_fd;
456 struct pcap_cache *tmp_pcap_cache = NULL;
457 bool ret_ok = true;
458
459 DEBUG(5,("cups_async_callback: callback received for printer data. "
460 "fd = %d\n", fd));
461
462 while (1) {
463 char *name = NULL, *info = NULL;
464 size_t namelen = 0, infolen = 0;
465 ssize_t ret = -1;
466
467 ret = sys_read(fd, &namelen, sizeof(namelen));
468 if (ret == 0) {
469 /* EOF */
470 break;
471 }
472 if (ret != sizeof(namelen)) {
473 DEBUG(10,("cups_async_callback: namelen read failed %d %s\n",
474 errno, strerror(errno)));
475 ret_ok = false;
476 break;
477 }
478
479 DEBUG(11,("cups_async_callback: read namelen %u\n",
480 (unsigned int)namelen));
481
482 ret = sys_read(fd, &infolen, sizeof(infolen));
483 if (ret == 0) {
484 /* EOF */
485 break;
486 }
487 if (ret != sizeof(infolen)) {
488 DEBUG(10,("cups_async_callback: infolen read failed %s\n",
489 strerror(errno)));
490 ret_ok = false;
491 break;
492 }
493
494 DEBUG(11,("cups_async_callback: read infolen %u\n",
495 (unsigned int)infolen));
496
497 if (namelen) {
498 name = TALLOC_ARRAY(frame, char, namelen);
499 if (!name) {
500 ret_ok = false;
501 break;
502 }
503 ret = sys_read(fd, name, namelen);
504 if (ret == 0) {
505 /* EOF */
506 break;
507 }
508 if (ret != namelen) {
509 DEBUG(10,("cups_async_callback: name read failed %s\n",
510 strerror(errno)));
511 ret_ok = false;
512 break;
513 }
514 DEBUG(11,("cups_async_callback: read name %s\n",
515 name));
516 } else {
517 name = NULL;
518 }
519 if (infolen) {
520 info = TALLOC_ARRAY(frame, char, infolen);
521 if (!info) {
522 ret_ok = false;
523 break;
524 }
525 ret = sys_read(fd, info, infolen);
526 if (ret == 0) {
527 /* EOF */
528 break;
529 }
530 if (ret != infolen) {
531 DEBUG(10,("cups_async_callback: info read failed %s\n",
532 strerror(errno)));
533 ret_ok = false;
534 break;
535 }
536 DEBUG(11,("cups_async_callback: read info %s\n",
537 info));
538 } else {
539 info = NULL;
540 }
541
542 /* Add to our local pcap cache. */
543 ret_ok = pcap_cache_add_specific(&tmp_pcap_cache, name, info);
544 TALLOC_FREE(name);
545 TALLOC_FREE(info);
546 if (!ret_ok) {
547 DEBUG(0, ("failed to add to tmp pcap cache\n"));
548 break;
549 }
550 }
551
552 TALLOC_FREE(frame);
553 if (!ret_ok) {
554 DEBUG(0,("failed to read a new printer list\n"));
555 pcap_cache_destroy_specific(&tmp_pcap_cache);
556 } else {
557 /* We got a possibly empty namelist, replace our local cache. */
558 pcap_cache_destroy_specific(&local_pcap_copy);
559 local_pcap_copy = tmp_pcap_cache;
560
561 /* And the systemwide pcap cache. */
562 pcap_cache_replace(local_pcap_copy);
563
564 /* Caller may have requested post cache fill callback */
565 if (cb_args->post_cache_fill_fn) {
566 cb_args->post_cache_fill_fn();
567 }
568 }
569 close(fd);
570 TALLOC_FREE(cb_args);
571 TALLOC_FREE(cache_fd_event);
572 }
573
574 bool cups_cache_reload(void (*post_cache_fill_fn)(void))
575 {
576 struct cups_async_cb_args *cb_args;
577 int *p_pipe_fd;
578
579 cb_args = TALLOC_P(NULL, struct cups_async_cb_args);
580 if (!cb_args) {
581 return false;
582 }
583 cb_args->post_cache_fill_fn = post_cache_fill_fn;
584 p_pipe_fd = &cb_args->pipe_fd;
585 *p_pipe_fd = -1;
586
587 /* Set up an async refresh. */
588 if (!cups_pcap_load_async(p_pipe_fd)) {
589 talloc_free(cb_args);
590 return false;
591 }
592 if (!local_pcap_copy) {
593 /* We have no local cache, wait directly for
594 * async refresh to complete.
595 */
596 DEBUG(10,("cups_cache_reload: sync read on fd %d\n",
597 *p_pipe_fd ));
598
599 cups_async_callback(smbd_event_context(),
600 NULL,
601 EVENT_FD_READ,
602 (void *)cb_args);
603 if (!local_pcap_copy) {
604 return false;
605 }
606 } else {
607 /* Replace the system cache with our
608 * local copy. */
609 pcap_cache_replace(local_pcap_copy);
610
611 DEBUG(10,("cups_cache_reload: async read on fd %d\n",
612 *p_pipe_fd ));
613
614 /* Trigger an event when the pipe can be read. */
615 cache_fd_event = event_add_fd(smbd_event_context(),
616 NULL, *p_pipe_fd,
617 EVENT_FD_READ,
618 cups_async_callback,
619 (void *)cb_args);
620 if (!cache_fd_event) {
621 close(*p_pipe_fd);
622 talloc_free(cb_args);
623 return false;
624 }
625 }
626 return true;
627 }
628
629 /*
630 * 'cups_job_delete()' - Delete a job.
631 */
632
633 static int cups_job_delete(const char *sharename, const char *lprm_command, struct printjob *pjob)
634 {
635 TALLOC_CTX *frame = talloc_stackframe();
636 int ret = 1; /* Return value */
637 http_t *http = NULL; /* HTTP connection to server */
638 ipp_t *request = NULL, /* IPP Request */
639 *response = NULL; /* IPP Response */
640 cups_lang_t *language = NULL; /* Default language */
641 char *user = NULL;
642 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
643 size_t size;
644
645 DEBUG(5,("cups_job_delete(%s, %p (%d))\n", sharename, pjob, pjob->sysjob));
646
647 /*
648 * Make sure we don't ask for passwords...
649 */
650
651 cupsSetPasswordCB(cups_passwd_cb);
652
653 /*
654 * Try to connect to the server...
655 */
656
657 if ((http = cups_connect(frame)) == NULL) {
658 goto out;
659 }
660
661 /*
662 * Build an IPP_CANCEL_JOB request, which requires the following
663 * attributes:
664 *
665 * attributes-charset
666 * attributes-natural-language
667 * job-uri
668 * requesting-user-name
669 */
670
671 request = ippNew();
672
673 request->request.op.operation_id = IPP_CANCEL_JOB;
674 request->request.op.request_id = 1;
675
676 language = cupsLangDefault();
677
678 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
679 "attributes-charset", NULL, "utf-8");
680
681 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
682 "attributes-natural-language", NULL, language->language);
683
684 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
685
686 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
687
688 if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
689 goto out;
690 }
691
692 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
693 NULL, user);
694
695 /*
696 * Do the request and get back a response...
697 */
698
699 if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
700 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
701 DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
702 ippErrorString(cupsLastError())));
703 } else {
704 ret = 0;
705 }
706 } else {
707 DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
708 ippErrorString(cupsLastError())));
709 }
710
711 out:
712 if (response)
713 ippDelete(response);
714
715 if (language)
716 cupsLangFree(language);
717
718 if (http)
719 httpClose(http);
720
721 TALLOC_FREE(frame);
722 return ret;
723 }
724
725
726 /*
727 * 'cups_job_pause()' - Pause a job.
728 */
729
730 static int cups_job_pause(int snum, struct printjob *pjob)
731 {
732 TALLOC_CTX *frame = talloc_stackframe();
733 int ret = 1; /* Return value */
734 http_t *http = NULL; /* HTTP connection to server */
735 ipp_t *request = NULL, /* IPP Request */
736 *response = NULL; /* IPP Response */
737 cups_lang_t *language = NULL; /* Default language */
738 char *user = NULL;
739 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
740 size_t size;
741
742 DEBUG(5,("cups_job_pause(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
743
744 /*
745 * Make sure we don't ask for passwords...
746 */
747
748 cupsSetPasswordCB(cups_passwd_cb);
749
750 /*
751 * Try to connect to the server...
752 */
753
754 if ((http = cups_connect(frame)) == NULL) {
755 goto out;
756 }
757
758 /*
759 * Build an IPP_HOLD_JOB request, which requires the following
760 * attributes:
761 *
762 * attributes-charset
763 * attributes-natural-language
764 * job-uri
765 * requesting-user-name
766 */
767
768 request = ippNew();
769
770 request->request.op.operation_id = IPP_HOLD_JOB;
771 request->request.op.request_id = 1;
772
773 language = cupsLangDefault();
774
775 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
776 "attributes-charset", NULL, "utf-8");
777
778 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
779 "attributes-natural-language", NULL, language->language);
780
781 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
782
783 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
784
785 if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
786 goto out;
787 }
788 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
789 NULL, user);
790
791 /*
792 * Do the request and get back a response...
793 */
794
795 if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
796 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
797 DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
798 ippErrorString(cupsLastError())));
799 } else {
800 ret = 0;
801 }
802 } else {
803 DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
804 ippErrorString(cupsLastError())));
805 }
806
807 out:
808 if (response)
809 ippDelete(response);
810
811 if (language)
812 cupsLangFree(language);
813
814 if (http)
815 httpClose(http);
816
817 TALLOC_FREE(frame);
818 return ret;
819 }
820
821
822 /*
823 * 'cups_job_resume()' - Resume a paused job.
824 */
825
826 static int cups_job_resume(int snum, struct printjob *pjob)
827 {
828 TALLOC_CTX *frame = talloc_stackframe();
829 int ret = 1; /* Return value */
830 http_t *http = NULL; /* HTTP connection to server */
831 ipp_t *request = NULL, /* IPP Request */
832 *response = NULL; /* IPP Response */
833 cups_lang_t *language = NULL; /* Default language */
834 char *user = NULL;
835 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
836 size_t size;
837
838 DEBUG(5,("cups_job_resume(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
839
840 /*
841 * Make sure we don't ask for passwords...
842 */
843
844 cupsSetPasswordCB(cups_passwd_cb);
845
846 /*
847 * Try to connect to the server...
848 */
849
850 if ((http = cups_connect(frame)) == NULL) {
851 goto out;
852 }
853
854 /*
855 * Build an IPP_RELEASE_JOB request, which requires the following
856 * attributes:
857 *
858 * attributes-charset
859 * attributes-natural-language
860 * job-uri
861 * requesting-user-name
862 */
863
864 request = ippNew();
865
866 request->request.op.operation_id = IPP_RELEASE_JOB;
867 request->request.op.request_id = 1;
868
869 language = cupsLangDefault();
870
871 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
872 "attributes-charset", NULL, "utf-8");
873
874 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
875 "attributes-natural-language", NULL, language->language);
876
877 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
878
879 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
880
881 if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
882 goto out;
883 }
884 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
885 NULL, user);
886
887 /*
888 * Do the request and get back a response...
889 */
890
891 if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
892 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
893 DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
894 ippErrorString(cupsLastError())));
895 } else {
896 ret = 0;
897 }
898 } else {
899 DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
900 ippErrorString(cupsLastError())));
901 }
902
903 out:
904 if (response)
905 ippDelete(response);
906
907 if (language)
908 cupsLangFree(language);
909
910 if (http)
911 httpClose(http);
912
913 TALLOC_FREE(frame);
914 return ret;
915 }
916
917
918 /*
919 * 'cups_job_submit()' - Submit a job for printing.
920 */
921
922 static int cups_job_submit(int snum, struct printjob *pjob)
923 {
924 TALLOC_CTX *frame = talloc_stackframe();
925 int ret = 1; /* Return value */
926 http_t *http = NULL; /* HTTP connection to server */
927 ipp_t *request = NULL, /* IPP Request */
928 *response = NULL; /* IPP Response */
929 ipp_attribute_t *attr_job_id = NULL; /* IPP Attribute "job-id" */
930 cups_lang_t *language = NULL; /* Default language */
931 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
932 const char *clientname = NULL; /* hostname of client for job-originating-host attribute */
933 char *new_jobname = NULL;
934 int num_options = 0;
935 cups_option_t *options = NULL;
936 char *printername = NULL;
937 char *user = NULL;
938 char *jobname = NULL;
939 char *cupsoptions = NULL;
940 char *filename = NULL;
941 size_t size;
942 uint32_t jobid = (uint32_t)-1;
943 char addr[INET6_ADDRSTRLEN];
944
945 DEBUG(5,("cups_job_submit(%d, %p)\n", snum, pjob));
946
947 /*
948 * Make sure we don't ask for passwords...
949 */
950
951 cupsSetPasswordCB(cups_passwd_cb);
952
953 /*
954 * Try to connect to the server...
955 */
956
957 if ((http = cups_connect(frame)) == NULL) {
958 goto out;
959 }
960
961 /*
962 * Build an IPP_PRINT_JOB request, which requires the following
963 * attributes:
964 *
965 * attributes-charset
966 * attributes-natural-language
967 * printer-uri
968 * requesting-user-name
969 * [document-data]
970 */
971
972 request = ippNew();
973
974 request->request.op.operation_id = IPP_PRINT_JOB;
975 request->request.op.request_id = 1;
976
977 language = cupsLangDefault();
978
979 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
980 "attributes-charset", NULL, "utf-8");
981
982 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
983 "attributes-natural-language", NULL, language->language);
984
985 if (!push_utf8_talloc(frame, &printername, PRINTERNAME(snum), &size)) {
986 goto out;
987 }
988 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
989 printername);
990
991 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
992 "printer-uri", NULL, uri);
993
994 if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
995 goto out;
996 }
997 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
998 NULL, user);
999
1000 clientname = client_name(get_client_fd());
1001 if (strcmp(clientname, "UNKNOWN") == 0) {
1002 clientname = client_addr(get_client_fd(),addr,sizeof(addr));
1003 }
1004
1005 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1006 "job-originating-host-name", NULL,
1007 clientname);
1008
1009 /* Get the jobid from the filename. */
1010 jobid = print_parse_jobid(pjob->filename);
1011 if (jobid == (uint32_t)-1) {
1012 DEBUG(0,("cups_job_submit: failed to parse jobid from name %s\n",
1013 pjob->filename ));
1014 jobid = 0;
1015 }
1016
1017 if (!push_utf8_talloc(frame, &jobname, pjob->jobname, &size)) {
1018 goto out;
1019 }
1020 new_jobname = talloc_asprintf(frame,
1021 "%s%.8u %s", PRINT_SPOOL_PREFIX,
1022 (unsigned int)jobid,
1023 jobname);
1024 if (new_jobname == NULL) {
1025 goto out;
1026 }
1027
1028 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL,
1029 new_jobname);
1030
1031 /*
1032 * add any options defined in smb.conf
1033 */
1034
1035 if (!push_utf8_talloc(frame, &cupsoptions, lp_cups_options(snum), &size)) {
1036 goto out;
1037 }
1038 num_options = 0;
1039 options = NULL;
1040 num_options = cupsParseOptions(cupsoptions, num_options, &options);
1041
1042 if ( num_options )
1043 cupsEncodeOptions(request, num_options, options);
1044
1045 /*
1046 * Do the request and get back a response...
1047 */
1048
1049 slprintf(uri, sizeof(uri) - 1, "/printers/%s", printername);
1050
1051 if (!push_utf8_talloc(frame, &filename, pjob->filename, &size)) {
1052 goto out;
1053 }
1054 if ((response = cupsDoFileRequest(http, request, uri, pjob->filename)) != NULL) {
1055 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1056 DEBUG(0,("Unable to print file to %s - %s\n", PRINTERNAME(snum),
1057 ippErrorString(cupsLastError())));
1058 } else {
1059 ret = 0;
1060 attr_job_id = ippFindAttribute(response, "job-id", IPP_TAG_INTEGER);
1061 if(attr_job_id) {
1062 pjob->sysjob = attr_job_id->values[0].integer;
1063 DEBUG(5,("cups_job_submit: job-id %d\n", pjob->sysjob));
1064 } else {
1065 DEBUG(0,("Missing job-id attribute in IPP response"));
1066 }
1067 }
1068 } else {
1069 DEBUG(0,("Unable to print file to `%s' - %s\n", PRINTERNAME(snum),
1070 ippErrorString(cupsLastError())));
1071 }
1072
1073 if ( ret == 0 )
1074 unlink(pjob->filename);
1075 /* else print_job_end will do it for us */
1076
1077 out:
1078 if (response)
1079 ippDelete(response);
1080
1081 if (language)
1082 cupsLangFree(language);
1083
1084 if (http)
1085 httpClose(http);
1086
1087 TALLOC_FREE(frame);
1088
1089 return ret;
1090 }
1091
1092 /*
1093 * 'cups_queue_get()' - Get all the jobs in the print queue.
1094 */
1095
1096 static int cups_queue_get(const char *sharename,
1097 enum printing_types printing_type,
1098 char *lpq_command,
1099 print_queue_struct **q,
1100 print_status_struct *status)
1101 {
1102 TALLOC_CTX *frame = talloc_stackframe();
1103 char *printername = NULL;
1104 http_t *http = NULL; /* HTTP connection to server */
1105 ipp_t *request = NULL, /* IPP Request */
1106 *response = NULL; /* IPP Response */
1107 ipp_attribute_t *attr = NULL; /* Current attribute */
1108 cups_lang_t *language = NULL; /* Default language */
1109 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
1110 int qcount = 0, /* Number of active queue entries */
1111 qalloc = 0; /* Number of queue entries allocated */
1112 print_queue_struct *queue = NULL, /* Queue entries */
1113 *temp; /* Temporary pointer for queue */
1114 char *user_name = NULL, /* job-originating-user-name attribute */
1115 *job_name = NULL; /* job-name attribute */
1116 int job_id; /* job-id attribute */
1117 int job_k_octets; /* job-k-octets attribute */
1118 time_t job_time; /* time-at-creation attribute */
1119 ipp_jstate_t job_status; /* job-status attribute */
1120 int job_priority; /* job-priority attribute */
1121 size_t size;
1122 static const char *jattrs[] = /* Requested job attributes */
1123 {
1124 "job-id",
1125 "job-k-octets",
1126 "job-name",
1127 "job-originating-user-name",
1128 "job-priority",
1129 "job-state",
1130 "time-at-creation",
1131 };
1132 static const char *pattrs[] = /* Requested printer attributes */
1133 {
1134 "printer-state",
1135 "printer-state-message"
1136 };
1137
1138 *q = NULL;
1139
1140 /* HACK ALERT!!! The problem with support the 'printer name'
1141 option is that we key the tdb off the sharename. So we will
1142 overload the lpq_command string to pass in the printername
1143 (which is basically what we do for non-cups printers ... using
1144 the lpq_command to get the queue listing). */
1145
1146 if (!push_utf8_talloc(frame, &printername, lpq_command, &size)) {
1147 goto out;
1148 }
1149 DEBUG(5,("cups_queue_get(%s, %p, %p)\n", lpq_command, q, status));
1150
1151 /*
1152 * Make sure we don't ask for passwords...
1153 */
1154
1155 cupsSetPasswordCB(cups_passwd_cb);
1156
1157 /*
1158 * Try to connect to the server...
1159 */
1160
1161 if ((http = cups_connect(frame)) == NULL) {
1162 goto out;
1163 }
1164
1165 /*
1166 * Generate the printer URI...
1167 */
1168
1169 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", printername);
1170
1171 /*
1172 * Build an IPP_GET_JOBS request, which requires the following
1173 * attributes:
1174 *
1175 * attributes-charset
1176 * attributes-natural-language
1177 * requested-attributes
1178 * printer-uri
1179 */
1180
1181 request = ippNew();
1182
1183 request->request.op.operation_id = IPP_GET_JOBS;
1184 request->request.op.request_id = 1;
1185
1186 language = cupsLangDefault();
1187
1188 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1189 "attributes-charset", NULL, "utf-8");
1190
1191 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1192 "attributes-natural-language", NULL, language->language);
1193
1194 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1195 "requested-attributes",
1196 (sizeof(jattrs) / sizeof(jattrs[0])),
1197 NULL, jattrs);
1198
1199 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1200 "printer-uri", NULL, uri);
1201
1202 /*
1203 * Do the request and get back a response...
1204 */
1205
1206 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1207 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
1208 ippErrorString(cupsLastError())));
1209 goto out;
1210 }
1211
1212 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1213 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
1214 ippErrorString(response->request.status.status_code)));
1215 goto out;
1216 }
1217
1218 /*
1219 * Process the jobs...
1220 */
1221
1222 qcount = 0;
1223 qalloc = 0;
1224 queue = NULL;
1225
1226 for (attr = response->attrs; attr != NULL; attr = attr->next) {
1227 /*
1228 * Skip leading attributes until we hit a job...
1229 */
1230
1231 while (attr != NULL && attr->group_tag != IPP_TAG_JOB)
1232 attr = attr->next;
1233
1234 if (attr == NULL)
1235 break;
1236
1237 /*
1238 * Allocate memory as needed...
1239 */
1240 if (qcount >= qalloc) {
1241 qalloc += 16;
1242
1243 queue = SMB_REALLOC_ARRAY(queue, print_queue_struct, qalloc);
1244
1245 if (queue == NULL) {
1246 DEBUG(0,("cups_queue_get: Not enough memory!"));
1247 qcount = 0;
1248 goto out;
1249 }
1250 }
1251
1252 temp = queue + qcount;
1253 memset(temp, 0, sizeof(print_queue_struct));
1254
1255 /*
1256 * Pull the needed attributes from this job...
1257 */
1258
1259 job_id = 0;
1260 job_priority = 50;
1261 job_status = IPP_JOB_PENDING;
1262 job_time = 0;
1263 job_k_octets = 0;
1264 user_name = NULL;
1265 job_name = NULL;
1266
1267 while (attr != NULL && attr->group_tag == IPP_TAG_JOB) {
1268 if (attr->name == NULL) {
1269 attr = attr->next;
1270 break;
1271 }
1272
1273 if (strcmp(attr->name, "job-id") == 0 &&
1274 attr->value_tag == IPP_TAG_INTEGER)
1275 job_id = attr->values[0].integer;
1276
1277 if (strcmp(attr->name, "job-k-octets") == 0 &&
1278 attr->value_tag == IPP_TAG_INTEGER)
1279 job_k_octets = attr->values[0].integer;
1280
1281 if (strcmp(attr->name, "job-priority") == 0 &&
1282 attr->value_tag == IPP_TAG_INTEGER)
1283 job_priority = attr->values[0].integer;
1284
1285 if (strcmp(attr->name, "job-state") == 0 &&
1286 attr->value_tag == IPP_TAG_ENUM)
1287 job_status = (ipp_jstate_t)(attr->values[0].integer);
1288
1289 if (strcmp(attr->name, "time-at-creation") == 0 &&
1290 attr->value_tag == IPP_TAG_INTEGER)
1291 job_time = attr->values[0].integer;
1292
1293 if (strcmp(attr->name, "job-name") == 0 &&
1294 attr->value_tag == IPP_TAG_NAME) {
1295 if (!pull_utf8_talloc(frame,
1296 &job_name,
1297 attr->values[0].string.text,
1298 &size)) {
1299 goto out;
1300 }
1301 }
1302
1303 if (strcmp(attr->name, "job-originating-user-name") == 0 &&
1304 attr->value_tag == IPP_TAG_NAME) {
1305 if (!pull_utf8_talloc(frame,
1306 &user_name,
1307 attr->values[0].string.text,
1308 &size)) {
1309 goto out;
1310 }
1311 }
1312
1313 attr = attr->next;
1314 }
1315
1316 /*
1317 * See if we have everything needed...
1318 */
1319
1320 if (user_name == NULL || job_name == NULL || job_id == 0) {
1321 if (attr == NULL)
1322 break;
1323 else
1324 continue;
1325 }
1326
1327 temp->job = job_id;
1328 temp->size = job_k_octets * 1024;
1329 temp->status = job_status == IPP_JOB_PENDING ? LPQ_QUEUED :
1330 job_status == IPP_JOB_STOPPED ? LPQ_PAUSED :
1331 job_status == IPP_JOB_HELD ? LPQ_PAUSED :
1332 LPQ_PRINTING;
1333 temp->priority = job_priority;
1334 temp->time = job_time;
1335 strlcpy(temp->fs_user, user_name, sizeof(temp->fs_user));
1336 strlcpy(temp->fs_file, job_name, sizeof(temp->fs_file));
1337
1338 qcount ++;
1339
1340 if (attr == NULL)
1341 break;
1342 }
1343
1344 ippDelete(response);
1345 response = NULL;
1346
1347 /*
1348 * Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the
1349 * following attributes:
1350 *
1351 * attributes-charset
1352 * attributes-natural-language
1353 * requested-attributes
1354 * printer-uri
1355 */
1356
1357 request = ippNew();
1358
1359 request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1360 request->request.op.request_id = 1;
1361
1362 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1363 "attributes-charset", NULL, "utf-8");
1364
1365 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1366 "attributes-natural-language", NULL, language->language);
1367
1368 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1369 "requested-attributes",
1370 (sizeof(pattrs) / sizeof(pattrs[0])),
1371 NULL, pattrs);
1372
1373 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1374 "printer-uri", NULL, uri);
1375
1376 /*
1377 * Do the request and get back a response...
1378 */
1379
1380 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1381 DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
1382 ippErrorString(cupsLastError())));
1383 *q = queue;
1384 goto out;
1385 }
1386
1387 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1388 DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
1389 ippErrorString(response->request.status.status_code)));
1390 *q = queue;
1391 goto out;
1392 }
1393
1394 /*
1395 * Get the current printer status and convert it to the SAMBA values.
1396 */
1397
1398 if ((attr = ippFindAttribute(response, "printer-state", IPP_TAG_ENUM)) != NULL) {
1399 if (attr->values[0].integer == IPP_PRINTER_STOPPED)
1400 status->status = LPSTAT_STOPPED;
1401 else
1402 status->status = LPSTAT_OK;
1403 }
1404
1405 if ((attr = ippFindAttribute(response, "printer-state-message",
1406 IPP_TAG_TEXT)) != NULL) {
1407 char *msg = NULL;
1408 if (!pull_utf8_talloc(frame, &msg,
1409 attr->values[0].string.text,
1410 &size)) {
1411 SAFE_FREE(queue);
1412 qcount = 0;
1413 goto out;
1414 }
1415 fstrcpy(status->message, msg);
1416 }
1417
1418 /*
1419 * Return the job queue...
1420 */
1421
1422 *q = queue;
1423
1424 out:
1425 if (response)
1426 ippDelete(response);
1427
1428 if (language)
1429 cupsLangFree(language);
1430
1431 if (http)
1432 httpClose(http);
1433
1434 TALLOC_FREE(frame);
1435 return qcount;
1436 }
1437
1438
1439 /*
1440 * 'cups_queue_pause()' - Pause a print queue.
1441 */
1442
1443 static int cups_queue_pause(int snum)
1444 {
1445 TALLOC_CTX *frame = talloc_stackframe();
1446 int ret = 1; /* Return value */
1447 http_t *http = NULL; /* HTTP connection to server */
1448 ipp_t *request = NULL, /* IPP Request */
1449 *response = NULL; /* IPP Response */
1450 cups_lang_t *language = NULL; /* Default language */
1451 char *printername = NULL;
1452 char *username = NULL;
1453 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
1454 size_t size;
1455
1456 DEBUG(5,("cups_queue_pause(%d)\n", snum));
1457
1458 /*
1459 * Make sure we don't ask for passwords...
1460 */
1461
1462 cupsSetPasswordCB(cups_passwd_cb);
1463
1464 /*
1465 * Try to connect to the server...
1466 */
1467
1468 if ((http = cups_connect(frame)) == NULL) {
1469 goto out;
1470 }
1471
1472 /*
1473 * Build an IPP_PAUSE_PRINTER request, which requires the following
1474 * attributes:
1475 *
1476 * attributes-charset
1477 * attributes-natural-language
1478 * printer-uri
1479 * requesting-user-name
1480 */
1481
1482 request = ippNew();
1483
1484 request->request.op.operation_id = IPP_PAUSE_PRINTER;
1485 request->request.op.request_id = 1;
1486
1487 language = cupsLangDefault();
1488
1489 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1490 "attributes-charset", NULL, "utf-8");
1491
1492 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1493 "attributes-natural-language", NULL, language->language);
1494
1495 if (!push_utf8_talloc(frame, &printername, PRINTERNAME(snum), &size)) {
1496 goto out;
1497 }
1498 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1499 printername);
1500
1501 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1502
1503 if (!push_utf8_talloc(frame, &username, current_user_info.unix_name, &size)) {
1504 goto out;
1505 }
1506 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1507 NULL, username);
1508
1509 /*
1510 * Do the request and get back a response...
1511 */
1512
1513 if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) {
1514 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1515 DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1516 ippErrorString(cupsLastError())));
1517 } else {
1518 ret = 0;
1519 }
1520 } else {
1521 DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1522 ippErrorString(cupsLastError())));
1523 }
1524
1525 out:
1526 if (response)
1527 ippDelete(response);
1528
1529 if (language)
1530 cupsLangFree(language);
1531
1532 if (http)
1533 httpClose(http);
1534
1535 TALLOC_FREE(frame);
1536 return ret;
1537 }
1538
1539
1540 /*
1541 * 'cups_queue_resume()' - Restart a print queue.
1542 */
1543
1544 static int cups_queue_resume(int snum)
1545 {
1546 TALLOC_CTX *frame = talloc_stackframe();
1547 int ret = 1; /* Return value */
1548 http_t *http = NULL; /* HTTP connection to server */
1549 ipp_t *request = NULL, /* IPP Request */
1550 *response = NULL; /* IPP Response */
1551 cups_lang_t *language = NULL; /* Default language */
1552 char *printername = NULL;
1553 char *username = NULL;
1554 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
1555 size_t size;
1556
1557 DEBUG(5,("cups_queue_resume(%d)\n", snum));
1558
1559 /*
1560 * Make sure we don't ask for passwords...
1561 */
1562
1563 cupsSetPasswordCB(cups_passwd_cb);
1564
1565 /*
1566 * Try to connect to the server...
1567 */
1568
1569 if ((http = cups_connect(frame)) == NULL) {
1570 goto out;
1571 }
1572
1573 /*
1574 * Build an IPP_RESUME_PRINTER request, which requires the following
1575 * attributes:
1576 *
1577 * attributes-charset
1578 * attributes-natural-language
1579 * printer-uri
1580 * requesting-user-name
1581 */
1582
1583 request = ippNew();
1584
1585 request->request.op.operation_id = IPP_RESUME_PRINTER;
1586 request->request.op.request_id = 1;
1587
1588 language = cupsLangDefault();
1589
1590 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1591 "attributes-charset", NULL, "utf-8");
1592
1593 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1594 "attributes-natural-language", NULL, language->language);
1595
1596 if (!push_utf8_talloc(frame, &printername, PRINTERNAME(snum), &size)) {
1597 goto out;
1598 }
1599 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1600 printername);
1601
1602 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1603
1604 if (!push_utf8_talloc(frame, &username, current_user_info.unix_name, &size)) {
1605 goto out;
1606 }
1607 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1608 NULL, username);
1609
1610 /*
1611 * Do the request and get back a response...
1612 */
1613
1614 if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) {
1615 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1616 DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1617 ippErrorString(cupsLastError())));
1618 } else {
1619 ret = 0;
1620 }
1621 } else {
1622 DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1623 ippErrorString(cupsLastError())));
1624 }
1625
1626 out:
1627 if (response)
1628 ippDelete(response);
1629
1630 if (language)
1631 cupsLangFree(language);
1632
1633 if (http)
1634 httpClose(http);
1635
1636 TALLOC_FREE(frame);
1637 return ret;
1638 }
1639
1640 /*******************************************************************
1641 * CUPS printing interface definitions...
1642 ******************************************************************/
1643
1644 struct printif cups_printif =
1645 {
1646 PRINT_CUPS,
1647 cups_queue_get,
1648 cups_queue_pause,
1649 cups_queue_resume,
1650 cups_job_delete,
1651 cups_job_pause,
1652 cups_job_resume,
1653 cups_job_submit,
1654 };
1655
1656 bool cups_pull_comment_location(NT_PRINTER_INFO_LEVEL_2 *printer)
1657 {
1658 TALLOC_CTX *frame = talloc_stackframe();
1659 http_t *http = NULL; /* HTTP connection to server */
1660 ipp_t *request = NULL, /* IPP Request */
1661 *response = NULL; /* IPP Response */
1662 ipp_attribute_t *attr; /* Current attribute */
1663 cups_lang_t *language = NULL; /* Default language */
1664 char uri[HTTP_MAX_URI];
1665 char *server = NULL;
1666 char *sharename = NULL;
1667 char *name = NULL;
1668 static const char *requested[] =/* Requested attributes */
1669 {
1670 "printer-name",
1671 "printer-info",
1672 "printer-location"
1673 };
1674 bool ret = False;
1675 size_t size;
1676
1677 DEBUG(5, ("pulling %s location\n", printer->sharename));
1678
1679 /*
1680 * Make sure we don't ask for passwords...
1681 */
1682
1683 cupsSetPasswordCB(cups_passwd_cb);
1684
1685 /*
1686 * Try to connect to the server...
1687 */
1688
1689 if ((http = cups_connect(frame)) == NULL) {
1690 goto out;
1691 }
1692
1693 request = ippNew();
1694
1695 request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1696 request->request.op.request_id = 1;
1697
1698 language = cupsLangDefault();
1699
1700 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1701 "attributes-charset", NULL, "utf-8");
1702
1703 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1704 "attributes-natural-language", NULL, language->language);
1705
1706 if (lp_cups_server() != NULL && strlen(lp_cups_server()) > 0) {
1707 if (!push_utf8_talloc(frame, &server, lp_cups_server(), &size)) {
1708 goto out;
1709 }
1710 } else {
1711 server = talloc_strdup(frame,cupsServer());
1712 }
1713 if (server) {
1714 goto out;
1715 }
1716 if (!push_utf8_talloc(frame, &sharename, printer->sharename, &size)) {
1717 goto out;
1718 }
1719 slprintf(uri, sizeof(uri) - 1, "ipp://%s/printers/%s",
1720 server, sharename);
1721
1722 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1723 "printer-uri", NULL, uri);
1724
1725 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1726 "requested-attributes",
1727 (sizeof(requested) / sizeof(requested[0])),
1728 NULL, requested);
1729
1730 /*
1731 * Do the request and get back a response...
1732 */
1733
1734 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1735 DEBUG(0,("Unable to get printer attributes - %s\n",
1736 ippErrorString(cupsLastError())));
1737 goto out;
1738 }
1739
1740 for (attr = response->attrs; attr != NULL;) {
1741 /*
1742 * Skip leading attributes until we hit a printer...
1743 */
1744
1745 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
1746 attr = attr->next;
1747
1748 if (attr == NULL)
1749 break;
1750
1751 /*
1752 * Pull the needed attributes from this printer...
1753 */
1754
1755 while ( attr && (attr->group_tag == IPP_TAG_PRINTER) ) {
1756 if (strcmp(attr->name, "printer-name") == 0 &&
1757 attr->value_tag == IPP_TAG_NAME) {
1758 if (!pull_utf8_talloc(frame,
1759 &name,
1760 attr->values[0].string.text,
1761 &size)) {
1762 goto out;
1763 }
1764 }
1765
1766 /* Grab the comment if we don't have one */
1767 if ( (strcmp(attr->name, "printer-info") == 0)
1768 && (attr->value_tag == IPP_TAG_TEXT)
1769 && !strlen(printer->comment) )
1770 {
1771 char *comment = NULL;
1772 if (!pull_utf8_talloc(frame,
1773 &comment,
1774 attr->values[0].string.text,
1775 &size)) {
1776 goto out;
1777 }
1778 DEBUG(5,("cups_pull_comment_location: Using cups comment: %s\n",
1779 comment));
1780 strlcpy(printer->comment,
1781 comment,
1782 sizeof(printer->comment));
1783 }
1784
1785 /* Grab the location if we don't have one */
1786 if ( (strcmp(attr->name, "printer-location") == 0)
1787 && (attr->value_tag == IPP_TAG_TEXT)
1788 && !strlen(printer->location) )
1789 {
1790 char *location = NULL;
1791 if (!pull_utf8_talloc(frame,
1792 &location,
1793 attr->values[0].string.text,
1794 &size)) {
1795 goto out;
1796 }
1797 DEBUG(5,("cups_pull_comment_location: Using cups location: %s\n",
1798 location));
1799 strlcpy(printer->location,
1800 location,
1801 sizeof(printer->location));
1802 }
1803
1804 attr = attr->next;
1805 }
1806
1807 /*
1808 * We have everything needed...
1809 */
1810
1811 if (name != NULL)
1812 break;
1813 }
1814
1815 ret = True;
1816
1817 out:
1818 if (response)
1819 ippDelete(response);
1820
1821 if (request) {
1822 ippDelete(request);
1823 }
1824
1825 if (language)
1826 cupsLangFree(language);
1827
1828 if (http)
1829 httpClose(http);
1830
1831 TALLOC_FREE(frame);
1832 return ret;
1833 }
1834
1835 #else
1836 /* this keeps fussy compilers happy */
1837 void print_cups_dummy(void);
1838 void print_cups_dummy(void) {}
1839 #endif /* HAVE_CUPS */
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