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s3-printing: fix cups pcap reload with no printers
[Samba.git] / source3 / printing / print_cups.c
blob3031a88e5d110c905d9d53c974f56dc022c8fc5c
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 #include "printing/pcap.h"
28
29 #ifdef HAVE_CUPS
30 #include <cups/cups.h>
31 #include <cups/language.h>
32
33 static SIG_ATOMIC_T gotalarm;
34
35 /***************************************************************
36 Signal function to tell us we timed out.
37 ****************************************************************/
38
39 static void gotalarm_sig(int signum)
40 {
41 gotalarm = 1;
42 }
43
44 extern userdom_struct current_user_info;
45
46 /*
47 * 'cups_passwd_cb()' - The CUPS password callback...
48 */
49
50 static const char * /* O - Password or NULL */
51 cups_passwd_cb(const char *prompt) /* I - Prompt */
52 {
53 /*
54 * Always return NULL to indicate that no password is available...
55 */
56
57 return (NULL);
58 }
59
60 static http_t *cups_connect(TALLOC_CTX *frame)
61 {
62 http_t *http = NULL;
63 char *server = NULL, *p = NULL;
64 int port;
65 int timeout = lp_cups_connection_timeout();
66 size_t size;
67
68 if (lp_cups_server() != NULL && strlen(lp_cups_server()) > 0) {
69 if (!push_utf8_talloc(frame, &server, lp_cups_server(), &size)) {
70 return NULL;
71 }
72 } else {
73 server = talloc_strdup(frame,cupsServer());
74 }
75 if (!server) {
76 return NULL;
77 }
78
79 p = strchr(server, ':');
80 if (p) {
81 port = atoi(p+1);
82 *p = '\0';
83 } else {
84 port = ippPort();
85 }
86
87 DEBUG(10, ("connecting to cups server %s:%d\n",
88 server, port));
89
90 gotalarm = 0;
91
92 if (timeout) {
93 CatchSignal(SIGALRM, gotalarm_sig);
94 alarm(timeout);
95 }
96
97 #ifdef HAVE_HTTPCONNECTENCRYPT
98 http = httpConnectEncrypt(server, port, lp_cups_encrypt());
99 #else
100 http = httpConnect(server, port);
101 #endif
102
103
104 CatchSignal(SIGALRM, SIG_IGN);
105 alarm(0);
106
107 if (http == NULL) {
108 DEBUG(0,("Unable to connect to CUPS server %s:%d - %s\n",
109 server, port, strerror(errno)));
110 }
111
112 return http;
113 }
114
115 static void send_pcap_info(const char *name, const char *info, void *pd)
116 {
117 int fd = *(int *)pd;
118 size_t namelen = name ? strlen(name)+1 : 0;
119 size_t infolen = info ? strlen(info)+1 : 0;
120
121 DEBUG(11,("send_pcap_info: writing namelen %u\n", (unsigned int)namelen));
122 if (sys_write(fd, &namelen, sizeof(namelen)) != sizeof(namelen)) {
123 DEBUG(10,("send_pcap_info: namelen write failed %s\n",
124 strerror(errno)));
125 return;
126 }
127 DEBUG(11,("send_pcap_info: writing infolen %u\n", (unsigned int)infolen));
128 if (sys_write(fd, &infolen, sizeof(infolen)) != sizeof(infolen)) {
129 DEBUG(10,("send_pcap_info: infolen write failed %s\n",
130 strerror(errno)));
131 return;
132 }
133 if (namelen) {
134 DEBUG(11,("send_pcap_info: writing name %s\n", name));
135 if (sys_write(fd, name, namelen) != namelen) {
136 DEBUG(10,("send_pcap_info: name write failed %s\n",
137 strerror(errno)));
138 return;
139 }
140 }
141 if (infolen) {
142 DEBUG(11,("send_pcap_info: writing info %s\n", info));
143 if (sys_write(fd, info, infolen) != infolen) {
144 DEBUG(10,("send_pcap_info: info write failed %s\n",
145 strerror(errno)));
146 return;
147 }
148 }
149 }
150
151 static bool cups_cache_reload_async(int fd)
152 {
153 TALLOC_CTX *frame = talloc_stackframe();
154 struct pcap_cache *tmp_pcap_cache = NULL;
155 http_t *http = NULL; /* HTTP connection to server */
156 ipp_t *request = NULL, /* IPP Request */
157 *response = NULL; /* IPP Response */
158 ipp_attribute_t *attr; /* Current attribute */
159 cups_lang_t *language = NULL; /* Default language */
160 char *name, /* printer-name attribute */
161 *info; /* printer-info attribute */
162 static const char *requested[] =/* Requested attributes */
163 {
164 "printer-name",
165 "printer-info"
166 };
167 bool ret = False;
168 size_t size;
169
170 DEBUG(5, ("reloading cups printcap cache\n"));
171
172 /*
173 * Make sure we don't ask for passwords...
174 */
175
176 cupsSetPasswordCB(cups_passwd_cb);
177
178 /*
179 * Try to connect to the server...
180 */
181
182 if ((http = cups_connect(frame)) == NULL) {
183 goto out;
184 }
185
186 /*
187 * Build a CUPS_GET_PRINTERS request, which requires the following
188 * attributes:
189 *
190 * attributes-charset
191 * attributes-natural-language
192 * requested-attributes
193 */
194
195 request = ippNew();
196
197 request->request.op.operation_id = CUPS_GET_PRINTERS;
198 request->request.op.request_id = 1;
199
200 language = cupsLangDefault();
201
202 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
203 "attributes-charset", NULL, "utf-8");
204
205 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
206 "attributes-natural-language", NULL, language->language);
207
208 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
209 "requested-attributes",
210 (sizeof(requested) / sizeof(requested[0])),
211 NULL, requested);
212
213 /*
214 * Do the request and get back a response...
215 */
216
217 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
218 DEBUG(0,("Unable to get printer list - %s\n",
219 ippErrorString(cupsLastError())));
220 goto out;
221 }
222
223 for (attr = response->attrs; attr != NULL;) {
224 /*
225 * Skip leading attributes until we hit a printer...
226 */
227
228 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
229 attr = attr->next;
230
231 if (attr == NULL)
232 break;
233
234 /*
235 * Pull the needed attributes from this printer...
236 */
237
238 name = NULL;
239 info = NULL;
240
241 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER) {
242 if (strcmp(attr->name, "printer-name") == 0 &&
243 attr->value_tag == IPP_TAG_NAME) {
244 if (!pull_utf8_talloc(frame,
245 &name,
246 attr->values[0].string.text,
247 &size)) {
248 goto out;
249 }
250 }
251
252 if (strcmp(attr->name, "printer-info") == 0 &&
253 attr->value_tag == IPP_TAG_TEXT) {
254 if (!pull_utf8_talloc(frame,
255 &info,
256 attr->values[0].string.text,
257 &size)) {
258 goto out;
259 }
260 }
261
262 attr = attr->next;
263 }
264
265 /*
266 * See if we have everything needed...
267 */
268
269 if (name == NULL)
270 break;
271
272 if (!pcap_cache_add_specific(&tmp_pcap_cache, name, info)) {
273 goto out;
274 }
275 }
276
277 ippDelete(response);
278 response = NULL;
279
280 /*
281 * Build a CUPS_GET_CLASSES request, which requires the following
282 * attributes:
283 *
284 * attributes-charset
285 * attributes-natural-language
286 * requested-attributes
287 */
288
289 request = ippNew();
290
291 request->request.op.operation_id = CUPS_GET_CLASSES;
292 request->request.op.request_id = 1;
293
294 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
295 "attributes-charset", NULL, "utf-8");
296
297 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
298 "attributes-natural-language", NULL, language->language);
299
300 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
301 "requested-attributes",
302 (sizeof(requested) / sizeof(requested[0])),
303 NULL, requested);
304
305 /*
306 * Do the request and get back a response...
307 */
308
309 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
310 DEBUG(0,("Unable to get printer list - %s\n",
311 ippErrorString(cupsLastError())));
312 goto out;
313 }
314
315 for (attr = response->attrs; attr != NULL;) {
316 /*
317 * Skip leading attributes until we hit a printer...
318 */
319
320 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
321 attr = attr->next;
322
323 if (attr == NULL)
324 break;
325
326 /*
327 * Pull the needed attributes from this printer...
328 */
329
330 name = NULL;
331 info = NULL;
332
333 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER) {
334 if (strcmp(attr->name, "printer-name") == 0 &&
335 attr->value_tag == IPP_TAG_NAME) {
336 if (!pull_utf8_talloc(frame,
337 &name,
338 attr->values[0].string.text,
339 &size)) {
340 goto out;
341 }
342 }
343
344 if (strcmp(attr->name, "printer-info") == 0 &&
345 attr->value_tag == IPP_TAG_TEXT) {
346 if (!pull_utf8_talloc(frame,
347 &info,
348 attr->values[0].string.text,
349 &size)) {
350 goto out;
351 }
352 }
353
354 attr = attr->next;
355 }
356
357 /*
358 * See if we have everything needed...
359 */
360
361 if (name == NULL)
362 break;
363
364 if (!pcap_cache_add_specific(&tmp_pcap_cache, name, info)) {
365 goto out;
366 }
367 }
368
369 ret = True;
370
371 out:
372 if (response)
373 ippDelete(response);
374
375 if (language)
376 cupsLangFree(language);
377
378 if (http)
379 httpClose(http);
380
381 /* Send all the entries up the pipe. */
382 if (tmp_pcap_cache) {
383 pcap_printer_fn_specific(tmp_pcap_cache,
384 send_pcap_info,
385 (void *)&fd);
386
387 pcap_cache_destroy_specific(&tmp_pcap_cache);
388 }
389 TALLOC_FREE(frame);
390 return ret;
391 }
392
393 static struct fd_event *cache_fd_event;
394
395 static bool cups_pcap_load_async(struct tevent_context *ev,
396 struct messaging_context *msg_ctx,
397 int *pfd)
398 {
399 int fds[2];
400 pid_t pid;
401 NTSTATUS status;
402
403 *pfd = -1;
404
405 if (cache_fd_event) {
406 DEBUG(3,("cups_pcap_load_async: already waiting for "
407 "a refresh event\n" ));
408 return false;
409 }
410
411 DEBUG(5,("cups_pcap_load_async: asynchronously loading cups printers\n"));
412
413 if (pipe(fds) == -1) {
414 return false;
415 }
416
417 pid = sys_fork();
418 if (pid == (pid_t)-1) {
419 DEBUG(10,("cups_pcap_load_async: fork failed %s\n",
420 strerror(errno) ));
421 close(fds[0]);
422 close(fds[1]);
423 return false;
424 }
425
426 if (pid) {
427 DEBUG(10,("cups_pcap_load_async: child pid = %u\n",
428 (unsigned int)pid ));
429 /* Parent. */
430 close(fds[1]);
431 *pfd = fds[0];
432 return true;
433 }
434
435 /* Child. */
436
437 close_all_print_db();
438
439 status = reinit_after_fork(msg_ctx, ev, procid_self(), true);
440 if (!NT_STATUS_IS_OK(status)) {
441 DEBUG(0,("cups_pcap_load_async: reinit_after_fork() failed\n"));
442 smb_panic("cups_pcap_load_async: reinit_after_fork() failed");
443 }
444
445 close(fds[0]);
446 cups_cache_reload_async(fds[1]);
447 close(fds[1]);
448 _exit(0);
449 }
450
451 struct cups_async_cb_args {
452 int pipe_fd;
453 struct event_context *event_ctx;
454 struct messaging_context *msg_ctx;
455 void (*post_cache_fill_fn)(struct event_context *,
456 struct messaging_context *);
457 };
458
459 static void cups_async_callback(struct event_context *event_ctx,
460 struct fd_event *event,
461 uint16 flags,
462 void *p)
463 {
464 TALLOC_CTX *frame = talloc_stackframe();
465 struct cups_async_cb_args *cb_args = (struct cups_async_cb_args *)p;
466 int fd = cb_args->pipe_fd;
467 struct pcap_cache *tmp_pcap_cache = NULL;
468 bool ret_ok = true;
469
470 DEBUG(5,("cups_async_callback: callback received for printer data. "
471 "fd = %d\n", fd));
472
473 while (1) {
474 char *name = NULL, *info = NULL;
475 size_t namelen = 0, infolen = 0;
476 ssize_t ret = -1;
477
478 ret = sys_read(fd, &namelen, sizeof(namelen));
479 if (ret == 0) {
480 /* EOF */
481 break;
482 }
483 if (ret != sizeof(namelen)) {
484 DEBUG(10,("cups_async_callback: namelen read failed %d %s\n",
485 errno, strerror(errno)));
486 ret_ok = false;
487 break;
488 }
489
490 DEBUG(11,("cups_async_callback: read namelen %u\n",
491 (unsigned int)namelen));
492
493 ret = sys_read(fd, &infolen, sizeof(infolen));
494 if (ret == 0) {
495 /* EOF */
496 break;
497 }
498 if (ret != sizeof(infolen)) {
499 DEBUG(10,("cups_async_callback: infolen read failed %s\n",
500 strerror(errno)));
501 ret_ok = false;
502 break;
503 }
504
505 DEBUG(11,("cups_async_callback: read infolen %u\n",
506 (unsigned int)infolen));
507
508 if (namelen) {
509 name = TALLOC_ARRAY(frame, char, namelen);
510 if (!name) {
511 ret_ok = false;
512 break;
513 }
514 ret = sys_read(fd, name, namelen);
515 if (ret == 0) {
516 /* EOF */
517 break;
518 }
519 if (ret != namelen) {
520 DEBUG(10,("cups_async_callback: name read failed %s\n",
521 strerror(errno)));
522 ret_ok = false;
523 break;
524 }
525 DEBUG(11,("cups_async_callback: read name %s\n",
526 name));
527 } else {
528 name = NULL;
529 }
530 if (infolen) {
531 info = TALLOC_ARRAY(frame, char, infolen);
532 if (!info) {
533 ret_ok = false;
534 break;
535 }
536 ret = sys_read(fd, info, infolen);
537 if (ret == 0) {
538 /* EOF */
539 break;
540 }
541 if (ret != infolen) {
542 DEBUG(10,("cups_async_callback: info read failed %s\n",
543 strerror(errno)));
544 ret_ok = false;
545 break;
546 }
547 DEBUG(11,("cups_async_callback: read info %s\n",
548 info));
549 } else {
550 info = NULL;
551 }
552
553 /* Add to our local pcap cache. */
554 ret_ok = pcap_cache_add_specific(&tmp_pcap_cache, name, info);
555 TALLOC_FREE(name);
556 TALLOC_FREE(info);
557 if (!ret_ok) {
558 DEBUG(0, ("failed to add to tmp pcap cache\n"));
559 break;
560 }
561 }
562
563 TALLOC_FREE(frame);
564 if (!ret_ok) {
565 DEBUG(0, ("failed to read a new printer list\n"));
566 pcap_cache_destroy_specific(&tmp_pcap_cache);
567 } else {
568 /*
569 * replace the system-wide pcap cache with a (possibly empty)
570 * new one.
571 * FIXME The child process does not currently propagate cups
572 * errors back up to the parent, therefore we cannot
573 * differentiate between an empty printer list and a failure.
574 */
575 ret_ok = pcap_cache_replace(tmp_pcap_cache);
576 if (!ret_ok) {
577 DEBUG(0, ("failed to replace pcap cache\n"));
578 } else if (cb_args->post_cache_fill_fn != NULL) {
579 /* Caller requested post cache fill callback */
580 cb_args->post_cache_fill_fn(cb_args->event_ctx,
581 cb_args->msg_ctx);
582 }
583 }
584 close(fd);
585 TALLOC_FREE(cb_args);
586 TALLOC_FREE(cache_fd_event);
587 }
588
589 bool cups_cache_reload(struct tevent_context *ev,
590 struct messaging_context *msg_ctx,
591 void (*post_cache_fill_fn)(struct tevent_context *,
592 struct messaging_context *))
593 {
594 struct cups_async_cb_args *cb_args;
595 int *p_pipe_fd;
596
597 cb_args = TALLOC_P(NULL, struct cups_async_cb_args);
598 if (cb_args == NULL) {
599 return false;
600 }
601
602 cb_args->post_cache_fill_fn = post_cache_fill_fn;
603 cb_args->event_ctx = ev;
604 cb_args->msg_ctx = msg_ctx;
605 p_pipe_fd = &cb_args->pipe_fd;
606 *p_pipe_fd = -1;
607
608 /* Set up an async refresh. */
609 if (!cups_pcap_load_async(ev, msg_ctx, p_pipe_fd)) {
610 talloc_free(cb_args);
611 return false;
612 }
613
614 DEBUG(10,("cups_cache_reload: async read on fd %d\n",
615 *p_pipe_fd ));
616
617 /* Trigger an event when the pipe can be read. */
618 cache_fd_event = event_add_fd(ev,
619 NULL, *p_pipe_fd,
620 EVENT_FD_READ,
621 cups_async_callback,
622 (void *)cb_args);
623 if (!cache_fd_event) {
624 close(*p_pipe_fd);
625 TALLOC_FREE(cb_args);
626 return false;
627 }
628
629 return true;
630 }
631
632 /*
633 * 'cups_job_delete()' - Delete a job.
634 */
635
636 static int cups_job_delete(const char *sharename, const char *lprm_command, struct printjob *pjob)
637 {
638 TALLOC_CTX *frame = talloc_stackframe();
639 int ret = 1; /* Return value */
640 http_t *http = NULL; /* HTTP connection to server */
641 ipp_t *request = NULL, /* IPP Request */
642 *response = NULL; /* IPP Response */
643 cups_lang_t *language = NULL; /* Default language */
644 char *user = NULL;
645 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
646 size_t size;
647
648 DEBUG(5,("cups_job_delete(%s, %p (%d))\n", sharename, pjob, pjob->sysjob));
649
650 /*
651 * Make sure we don't ask for passwords...
652 */
653
654 cupsSetPasswordCB(cups_passwd_cb);
655
656 /*
657 * Try to connect to the server...
658 */
659
660 if ((http = cups_connect(frame)) == NULL) {
661 goto out;
662 }
663
664 /*
665 * Build an IPP_CANCEL_JOB request, which requires the following
666 * attributes:
667 *
668 * attributes-charset
669 * attributes-natural-language
670 * job-uri
671 * requesting-user-name
672 */
673
674 request = ippNew();
675
676 request->request.op.operation_id = IPP_CANCEL_JOB;
677 request->request.op.request_id = 1;
678
679 language = cupsLangDefault();
680
681 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
682 "attributes-charset", NULL, "utf-8");
683
684 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
685 "attributes-natural-language", NULL, language->language);
686
687 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
688
689 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
690
691 if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
692 goto out;
693 }
694
695 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
696 NULL, user);
697
698 /*
699 * Do the request and get back a response...
700 */
701
702 if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
703 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
704 DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
705 ippErrorString(cupsLastError())));
706 } else {
707 ret = 0;
708 }
709 } else {
710 DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
711 ippErrorString(cupsLastError())));
712 }
713
714 out:
715 if (response)
716 ippDelete(response);
717
718 if (language)
719 cupsLangFree(language);
720
721 if (http)
722 httpClose(http);
723
724 TALLOC_FREE(frame);
725 return ret;
726 }
727
728
729 /*
730 * 'cups_job_pause()' - Pause a job.
731 */
732
733 static int cups_job_pause(int snum, struct printjob *pjob)
734 {
735 TALLOC_CTX *frame = talloc_stackframe();
736 int ret = 1; /* Return value */
737 http_t *http = NULL; /* HTTP connection to server */
738 ipp_t *request = NULL, /* IPP Request */
739 *response = NULL; /* IPP Response */
740 cups_lang_t *language = NULL; /* Default language */
741 char *user = NULL;
742 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
743 size_t size;
744
745 DEBUG(5,("cups_job_pause(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
746
747 /*
748 * Make sure we don't ask for passwords...
749 */
750
751 cupsSetPasswordCB(cups_passwd_cb);
752
753 /*
754 * Try to connect to the server...
755 */
756
757 if ((http = cups_connect(frame)) == NULL) {
758 goto out;
759 }
760
761 /*
762 * Build an IPP_HOLD_JOB request, which requires the following
763 * attributes:
764 *
765 * attributes-charset
766 * attributes-natural-language
767 * job-uri
768 * requesting-user-name
769 */
770
771 request = ippNew();
772
773 request->request.op.operation_id = IPP_HOLD_JOB;
774 request->request.op.request_id = 1;
775
776 language = cupsLangDefault();
777
778 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
779 "attributes-charset", NULL, "utf-8");
780
781 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
782 "attributes-natural-language", NULL, language->language);
783
784 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
785
786 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
787
788 if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
789 goto out;
790 }
791 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
792 NULL, user);
793
794 /*
795 * Do the request and get back a response...
796 */
797
798 if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
799 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
800 DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
801 ippErrorString(cupsLastError())));
802 } else {
803 ret = 0;
804 }
805 } else {
806 DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
807 ippErrorString(cupsLastError())));
808 }
809
810 out:
811 if (response)
812 ippDelete(response);
813
814 if (language)
815 cupsLangFree(language);
816
817 if (http)
818 httpClose(http);
819
820 TALLOC_FREE(frame);
821 return ret;
822 }
823
824
825 /*
826 * 'cups_job_resume()' - Resume a paused job.
827 */
828
829 static int cups_job_resume(int snum, struct printjob *pjob)
830 {
831 TALLOC_CTX *frame = talloc_stackframe();
832 int ret = 1; /* Return value */
833 http_t *http = NULL; /* HTTP connection to server */
834 ipp_t *request = NULL, /* IPP Request */
835 *response = NULL; /* IPP Response */
836 cups_lang_t *language = NULL; /* Default language */
837 char *user = NULL;
838 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
839 size_t size;
840
841 DEBUG(5,("cups_job_resume(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
842
843 /*
844 * Make sure we don't ask for passwords...
845 */
846
847 cupsSetPasswordCB(cups_passwd_cb);
848
849 /*
850 * Try to connect to the server...
851 */
852
853 if ((http = cups_connect(frame)) == NULL) {
854 goto out;
855 }
856
857 /*
858 * Build an IPP_RELEASE_JOB request, which requires the following
859 * attributes:
860 *
861 * attributes-charset
862 * attributes-natural-language
863 * job-uri
864 * requesting-user-name
865 */
866
867 request = ippNew();
868
869 request->request.op.operation_id = IPP_RELEASE_JOB;
870 request->request.op.request_id = 1;
871
872 language = cupsLangDefault();
873
874 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
875 "attributes-charset", NULL, "utf-8");
876
877 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
878 "attributes-natural-language", NULL, language->language);
879
880 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
881
882 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
883
884 if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
885 goto out;
886 }
887 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
888 NULL, user);
889
890 /*
891 * Do the request and get back a response...
892 */
893
894 if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
895 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
896 DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
897 ippErrorString(cupsLastError())));
898 } else {
899 ret = 0;
900 }
901 } else {
902 DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
903 ippErrorString(cupsLastError())));
904 }
905
906 out:
907 if (response)
908 ippDelete(response);
909
910 if (language)
911 cupsLangFree(language);
912
913 if (http)
914 httpClose(http);
915
916 TALLOC_FREE(frame);
917 return ret;
918 }
919
920
921 /*
922 * 'cups_job_submit()' - Submit a job for printing.
923 */
924
925 static int cups_job_submit(int snum, struct printjob *pjob)
926 {
927 TALLOC_CTX *frame = talloc_stackframe();
928 int ret = 1; /* Return value */
929 http_t *http = NULL; /* HTTP connection to server */
930 ipp_t *request = NULL, /* IPP Request */
931 *response = NULL; /* IPP Response */
932 ipp_attribute_t *attr_job_id = NULL; /* IPP Attribute "job-id" */
933 cups_lang_t *language = NULL; /* Default language */
934 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
935 char *new_jobname = NULL;
936 int num_options = 0;
937 cups_option_t *options = NULL;
938 char *printername = NULL;
939 char *user = NULL;
940 char *jobname = NULL;
941 char *cupsoptions = NULL;
942 char *filename = NULL;
943 size_t size;
944 uint32_t jobid = (uint32_t)-1;
945
946 DEBUG(5,("cups_job_submit(%d, %p)\n", snum, pjob));
947
948 /*
949 * Make sure we don't ask for passwords...
950 */
951
952 cupsSetPasswordCB(cups_passwd_cb);
953
954 /*
955 * Try to connect to the server...
956 */
957
958 if ((http = cups_connect(frame)) == NULL) {
959 goto out;
960 }
961
962 /*
963 * Build an IPP_PRINT_JOB request, which requires the following
964 * attributes:
965 *
966 * attributes-charset
967 * attributes-natural-language
968 * printer-uri
969 * requesting-user-name
970 * [document-data]
971 */
972
973 request = ippNew();
974
975 request->request.op.operation_id = IPP_PRINT_JOB;
976 request->request.op.request_id = 1;
977
978 language = cupsLangDefault();
979
980 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
981 "attributes-charset", NULL, "utf-8");
982
983 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
984 "attributes-natural-language", NULL, language->language);
985
986 if (!push_utf8_talloc(frame, &printername, lp_printername(snum),
987 &size)) {
988 goto out;
989 }
990 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
991 printername);
992
993 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
994 "printer-uri", NULL, uri);
995
996 if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
997 goto out;
998 }
999 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1000 NULL, user);
1001
1002 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1003 "job-originating-host-name", NULL,
1004 pjob->clientmachine);
1005
1006 /* Get the jobid from the filename. */
1007 jobid = print_parse_jobid(pjob->filename);
1008 if (jobid == (uint32_t)-1) {
1009 DEBUG(0,("cups_job_submit: failed to parse jobid from name %s\n",
1010 pjob->filename ));
1011 jobid = 0;
1012 }
1013
1014 if (!push_utf8_talloc(frame, &jobname, pjob->jobname, &size)) {
1015 goto out;
1016 }
1017 new_jobname = talloc_asprintf(frame,
1018 "%s%.8u %s", PRINT_SPOOL_PREFIX,
1019 (unsigned int)jobid,
1020 jobname);
1021 if (new_jobname == NULL) {
1022 goto out;
1023 }
1024
1025 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL,
1026 new_jobname);
1027
1028 /*
1029 * add any options defined in smb.conf
1030 */
1031
1032 if (!push_utf8_talloc(frame, &cupsoptions, lp_cups_options(snum), &size)) {
1033 goto out;
1034 }
1035 num_options = 0;
1036 options = NULL;
1037 num_options = cupsParseOptions(cupsoptions, num_options, &options);
1038
1039 if ( num_options )
1040 cupsEncodeOptions(request, num_options, options);
1041
1042 /*
1043 * Do the request and get back a response...
1044 */
1045
1046 slprintf(uri, sizeof(uri) - 1, "/printers/%s", printername);
1047
1048 if (!push_utf8_talloc(frame, &filename, pjob->filename, &size)) {
1049 goto out;
1050 }
1051 if ((response = cupsDoFileRequest(http, request, uri, pjob->filename)) != NULL) {
1052 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1053 DEBUG(0,("Unable to print file to %s - %s\n",
1054 lp_printername(snum),
1055 ippErrorString(cupsLastError())));
1056 } else {
1057 ret = 0;
1058 attr_job_id = ippFindAttribute(response, "job-id", IPP_TAG_INTEGER);
1059 if(attr_job_id) {
1060 pjob->sysjob = attr_job_id->values[0].integer;
1061 DEBUG(5,("cups_job_submit: job-id %d\n", pjob->sysjob));
1062 } else {
1063 DEBUG(0,("Missing job-id attribute in IPP response"));
1064 }
1065 }
1066 } else {
1067 DEBUG(0,("Unable to print file to `%s' - %s\n",
1068 lp_printername(snum),
1069 ippErrorString(cupsLastError())));
1070 }
1071
1072 if ( ret == 0 )
1073 unlink(pjob->filename);
1074 /* else print_job_end will do it for us */
1075
1076 out:
1077 if (response)
1078 ippDelete(response);
1079
1080 if (language)
1081 cupsLangFree(language);
1082
1083 if (http)
1084 httpClose(http);
1085
1086 TALLOC_FREE(frame);
1087
1088 return ret;
1089 }
1090
1091 /*
1092 * 'cups_queue_get()' - Get all the jobs in the print queue.
1093 */
1094
1095 static int cups_queue_get(const char *sharename,
1096 enum printing_types printing_type,
1097 char *lpq_command,
1098 print_queue_struct **q,
1099 print_status_struct *status)
1100 {
1101 TALLOC_CTX *frame = talloc_stackframe();
1102 char *printername = NULL;
1103 http_t *http = NULL; /* HTTP connection to server */
1104 ipp_t *request = NULL, /* IPP Request */
1105 *response = NULL; /* IPP Response */
1106 ipp_attribute_t *attr = NULL; /* Current attribute */
1107 cups_lang_t *language = NULL; /* Default language */
1108 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
1109 int qcount = 0, /* Number of active queue entries */
1110 qalloc = 0; /* Number of queue entries allocated */
1111 print_queue_struct *queue = NULL, /* Queue entries */
1112 *temp; /* Temporary pointer for queue */
1113 char *user_name = NULL, /* job-originating-user-name attribute */
1114 *job_name = NULL; /* job-name attribute */
1115 int job_id; /* job-id attribute */
1116 int job_k_octets; /* job-k-octets attribute */
1117 time_t job_time; /* time-at-creation attribute */
1118 ipp_jstate_t job_status; /* job-status attribute */
1119 int job_priority; /* job-priority attribute */
1120 size_t size;
1121 static const char *jattrs[] = /* Requested job attributes */
1122 {
1123 "job-id",
1124 "job-k-octets",
1125 "job-name",
1126 "job-originating-user-name",
1127 "job-priority",
1128 "job-state",
1129 "time-at-creation",
1130 };
1131 static const char *pattrs[] = /* Requested printer attributes */
1132 {
1133 "printer-state",
1134 "printer-state-message"
1135 };
1136
1137 *q = NULL;
1138
1139 /* HACK ALERT!!! The problem with support the 'printer name'
1140 option is that we key the tdb off the sharename. So we will
1141 overload the lpq_command string to pass in the printername
1142 (which is basically what we do for non-cups printers ... using
1143 the lpq_command to get the queue listing). */
1144
1145 if (!push_utf8_talloc(frame, &printername, lpq_command, &size)) {
1146 goto out;
1147 }
1148 DEBUG(5,("cups_queue_get(%s, %p, %p)\n", lpq_command, q, status));
1149
1150 /*
1151 * Make sure we don't ask for passwords...
1152 */
1153
1154 cupsSetPasswordCB(cups_passwd_cb);
1155
1156 /*
1157 * Try to connect to the server...
1158 */
1159
1160 if ((http = cups_connect(frame)) == NULL) {
1161 goto out;
1162 }
1163
1164 /*
1165 * Generate the printer URI...
1166 */
1167
1168 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", printername);
1169
1170 /*
1171 * Build an IPP_GET_JOBS request, which requires the following
1172 * attributes:
1173 *
1174 * attributes-charset
1175 * attributes-natural-language
1176 * requested-attributes
1177 * printer-uri
1178 */
1179
1180 request = ippNew();
1181
1182 request->request.op.operation_id = IPP_GET_JOBS;
1183 request->request.op.request_id = 1;
1184
1185 language = cupsLangDefault();
1186
1187 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1188 "attributes-charset", NULL, "utf-8");
1189
1190 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1191 "attributes-natural-language", NULL, language->language);
1192
1193 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1194 "requested-attributes",
1195 (sizeof(jattrs) / sizeof(jattrs[0])),
1196 NULL, jattrs);
1197
1198 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1199 "printer-uri", NULL, uri);
1200
1201 /*
1202 * Do the request and get back a response...
1203 */
1204
1205 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1206 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
1207 ippErrorString(cupsLastError())));
1208 goto out;
1209 }
1210
1211 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1212 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
1213 ippErrorString(response->request.status.status_code)));
1214 goto out;
1215 }
1216
1217 /*
1218 * Process the jobs...
1219 */
1220
1221 qcount = 0;
1222 qalloc = 0;
1223 queue = NULL;
1224
1225 for (attr = response->attrs; attr != NULL; attr = attr->next) {
1226 /*
1227 * Skip leading attributes until we hit a job...
1228 */
1229
1230 while (attr != NULL && attr->group_tag != IPP_TAG_JOB)
1231 attr = attr->next;
1232
1233 if (attr == NULL)
1234 break;
1235
1236 /*
1237 * Allocate memory as needed...
1238 */
1239 if (qcount >= qalloc) {
1240 qalloc += 16;
1241
1242 queue = SMB_REALLOC_ARRAY(queue, print_queue_struct, qalloc);
1243
1244 if (queue == NULL) {
1245 DEBUG(0,("cups_queue_get: Not enough memory!"));
1246 qcount = 0;
1247 goto out;
1248 }
1249 }
1250
1251 temp = queue + qcount;
1252 memset(temp, 0, sizeof(print_queue_struct));
1253
1254 /*
1255 * Pull the needed attributes from this job...
1256 */
1257
1258 job_id = 0;
1259 job_priority = 50;
1260 job_status = IPP_JOB_PENDING;
1261 job_time = 0;
1262 job_k_octets = 0;
1263 user_name = NULL;
1264 job_name = NULL;
1265
1266 while (attr != NULL && attr->group_tag == IPP_TAG_JOB) {
1267 if (attr->name == NULL) {
1268 attr = attr->next;
1269 break;
1270 }
1271
1272 if (strcmp(attr->name, "job-id") == 0 &&
1273 attr->value_tag == IPP_TAG_INTEGER)
1274 job_id = attr->values[0].integer;
1275
1276 if (strcmp(attr->name, "job-k-octets") == 0 &&
1277 attr->value_tag == IPP_TAG_INTEGER)
1278 job_k_octets = attr->values[0].integer;
1279
1280 if (strcmp(attr->name, "job-priority") == 0 &&
1281 attr->value_tag == IPP_TAG_INTEGER)
1282 job_priority = attr->values[0].integer;
1283
1284 if (strcmp(attr->name, "job-state") == 0 &&
1285 attr->value_tag == IPP_TAG_ENUM)
1286 job_status = (ipp_jstate_t)(attr->values[0].integer);
1287
1288 if (strcmp(attr->name, "time-at-creation") == 0 &&
1289 attr->value_tag == IPP_TAG_INTEGER)
1290 job_time = attr->values[0].integer;
1291
1292 if (strcmp(attr->name, "job-name") == 0 &&
1293 attr->value_tag == IPP_TAG_NAME) {
1294 if (!pull_utf8_talloc(frame,
1295 &job_name,
1296 attr->values[0].string.text,
1297 &size)) {
1298 goto out;
1299 }
1300 }
1301
1302 if (strcmp(attr->name, "job-originating-user-name") == 0 &&
1303 attr->value_tag == IPP_TAG_NAME) {
1304 if (!pull_utf8_talloc(frame,
1305 &user_name,
1306 attr->values[0].string.text,
1307 &size)) {
1308 goto out;
1309 }
1310 }
1311
1312 attr = attr->next;
1313 }
1314
1315 /*
1316 * See if we have everything needed...
1317 */
1318
1319 if (user_name == NULL || job_name == NULL || job_id == 0) {
1320 if (attr == NULL)
1321 break;
1322 else
1323 continue;
1324 }
1325
1326 temp->job = job_id;
1327 temp->size = job_k_octets * 1024;
1328 temp->status = job_status == IPP_JOB_PENDING ? LPQ_QUEUED :
1329 job_status == IPP_JOB_STOPPED ? LPQ_PAUSED :
1330 job_status == IPP_JOB_HELD ? LPQ_PAUSED :
1331 LPQ_PRINTING;
1332 temp->priority = job_priority;
1333 temp->time = job_time;
1334 strlcpy(temp->fs_user, user_name, sizeof(temp->fs_user));
1335 strlcpy(temp->fs_file, job_name, sizeof(temp->fs_file));
1336
1337 qcount ++;
1338
1339 if (attr == NULL)
1340 break;
1341 }
1342
1343 ippDelete(response);
1344 response = NULL;
1345
1346 /*
1347 * Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the
1348 * following attributes:
1349 *
1350 * attributes-charset
1351 * attributes-natural-language
1352 * requested-attributes
1353 * printer-uri
1354 */
1355
1356 request = ippNew();
1357
1358 request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1359 request->request.op.request_id = 1;
1360
1361 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1362 "attributes-charset", NULL, "utf-8");
1363
1364 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1365 "attributes-natural-language", NULL, language->language);
1366
1367 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1368 "requested-attributes",
1369 (sizeof(pattrs) / sizeof(pattrs[0])),
1370 NULL, pattrs);
1371
1372 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1373 "printer-uri", NULL, uri);
1374
1375 /*
1376 * Do the request and get back a response...
1377 */
1378
1379 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1380 DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
1381 ippErrorString(cupsLastError())));
1382 goto out;
1383 }
1384
1385 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1386 DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
1387 ippErrorString(response->request.status.status_code)));
1388 goto out;
1389 }
1390
1391 /*
1392 * Get the current printer status and convert it to the SAMBA values.
1393 */
1394
1395 if ((attr = ippFindAttribute(response, "printer-state", IPP_TAG_ENUM)) != NULL) {
1396 if (attr->values[0].integer == IPP_PRINTER_STOPPED)
1397 status->status = LPSTAT_STOPPED;
1398 else
1399 status->status = LPSTAT_OK;
1400 }
1401
1402 if ((attr = ippFindAttribute(response, "printer-state-message",
1403 IPP_TAG_TEXT)) != NULL) {
1404 char *msg = NULL;
1405 if (!pull_utf8_talloc(frame, &msg,
1406 attr->values[0].string.text,
1407 &size)) {
1408 SAFE_FREE(queue);
1409 qcount = 0;
1410 goto out;
1411 }
1412 fstrcpy(status->message, msg);
1413 }
1414
1415 out:
1416
1417 /*
1418 * Return the job queue...
1419 */
1420
1421 *q = queue;
1422
1423 if (response)
1424 ippDelete(response);
1425
1426 if (language)
1427 cupsLangFree(language);
1428
1429 if (http)
1430 httpClose(http);
1431
1432 TALLOC_FREE(frame);
1433 return qcount;
1434 }
1435
1436
1437 /*
1438 * 'cups_queue_pause()' - Pause a print queue.
1439 */
1440
1441 static int cups_queue_pause(int snum)
1442 {
1443 TALLOC_CTX *frame = talloc_stackframe();
1444 int ret = 1; /* Return value */
1445 http_t *http = NULL; /* HTTP connection to server */
1446 ipp_t *request = NULL, /* IPP Request */
1447 *response = NULL; /* IPP Response */
1448 cups_lang_t *language = NULL; /* Default language */
1449 char *printername = NULL;
1450 char *username = NULL;
1451 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
1452 size_t size;
1453
1454 DEBUG(5,("cups_queue_pause(%d)\n", snum));
1455
1456 /*
1457 * Make sure we don't ask for passwords...
1458 */
1459
1460 cupsSetPasswordCB(cups_passwd_cb);
1461
1462 /*
1463 * Try to connect to the server...
1464 */
1465
1466 if ((http = cups_connect(frame)) == NULL) {
1467 goto out;
1468 }
1469
1470 /*
1471 * Build an IPP_PAUSE_PRINTER request, which requires the following
1472 * attributes:
1473 *
1474 * attributes-charset
1475 * attributes-natural-language
1476 * printer-uri
1477 * requesting-user-name
1478 */
1479
1480 request = ippNew();
1481
1482 request->request.op.operation_id = IPP_PAUSE_PRINTER;
1483 request->request.op.request_id = 1;
1484
1485 language = cupsLangDefault();
1486
1487 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1488 "attributes-charset", NULL, "utf-8");
1489
1490 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1491 "attributes-natural-language", NULL, language->language);
1492
1493 if (!push_utf8_talloc(frame, &printername, lp_printername(snum),
1494 &size)) {
1495 goto out;
1496 }
1497 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1498 printername);
1499
1500 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1501
1502 if (!push_utf8_talloc(frame, &username, current_user_info.unix_name, &size)) {
1503 goto out;
1504 }
1505 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1506 NULL, username);
1507
1508 /*
1509 * Do the request and get back a response...
1510 */
1511
1512 if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) {
1513 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1514 DEBUG(0,("Unable to pause printer %s - %s\n",
1515 lp_printername(snum),
1516 ippErrorString(cupsLastError())));
1517 } else {
1518 ret = 0;
1519 }
1520 } else {
1521 DEBUG(0,("Unable to pause printer %s - %s\n",
1522 lp_printername(snum),
1523 ippErrorString(cupsLastError())));
1524 }
1525
1526 out:
1527 if (response)
1528 ippDelete(response);
1529
1530 if (language)
1531 cupsLangFree(language);
1532
1533 if (http)
1534 httpClose(http);
1535
1536 TALLOC_FREE(frame);
1537 return ret;
1538 }
1539
1540
1541 /*
1542 * 'cups_queue_resume()' - Restart a print queue.
1543 */
1544
1545 static int cups_queue_resume(int snum)
1546 {
1547 TALLOC_CTX *frame = talloc_stackframe();
1548 int ret = 1; /* Return value */
1549 http_t *http = NULL; /* HTTP connection to server */
1550 ipp_t *request = NULL, /* IPP Request */
1551 *response = NULL; /* IPP Response */
1552 cups_lang_t *language = NULL; /* Default language */
1553 char *printername = NULL;
1554 char *username = NULL;
1555 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
1556 size_t size;
1557
1558 DEBUG(5,("cups_queue_resume(%d)\n", snum));
1559
1560 /*
1561 * Make sure we don't ask for passwords...
1562 */
1563
1564 cupsSetPasswordCB(cups_passwd_cb);
1565
1566 /*
1567 * Try to connect to the server...
1568 */
1569
1570 if ((http = cups_connect(frame)) == NULL) {
1571 goto out;
1572 }
1573
1574 /*
1575 * Build an IPP_RESUME_PRINTER request, which requires the following
1576 * attributes:
1577 *
1578 * attributes-charset
1579 * attributes-natural-language
1580 * printer-uri
1581 * requesting-user-name
1582 */
1583
1584 request = ippNew();
1585
1586 request->request.op.operation_id = IPP_RESUME_PRINTER;
1587 request->request.op.request_id = 1;
1588
1589 language = cupsLangDefault();
1590
1591 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1592 "attributes-charset", NULL, "utf-8");
1593
1594 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1595 "attributes-natural-language", NULL, language->language);
1596
1597 if (!push_utf8_talloc(frame, &printername, lp_printername(snum),
1598 &size)) {
1599 goto out;
1600 }
1601 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1602 printername);
1603
1604 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1605
1606 if (!push_utf8_talloc(frame, &username, current_user_info.unix_name, &size)) {
1607 goto out;
1608 }
1609 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1610 NULL, username);
1611
1612 /*
1613 * Do the request and get back a response...
1614 */
1615
1616 if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) {
1617 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1618 DEBUG(0,("Unable to resume printer %s - %s\n",
1619 lp_printername(snum),
1620 ippErrorString(cupsLastError())));
1621 } else {
1622 ret = 0;
1623 }
1624 } else {
1625 DEBUG(0,("Unable to resume printer %s - %s\n",
1626 lp_printername(snum),
1627 ippErrorString(cupsLastError())));
1628 }
1629
1630 out:
1631 if (response)
1632 ippDelete(response);
1633
1634 if (language)
1635 cupsLangFree(language);
1636
1637 if (http)
1638 httpClose(http);
1639
1640 TALLOC_FREE(frame);
1641 return ret;
1642 }
1643
1644 /*******************************************************************
1645 * CUPS printing interface definitions...
1646 ******************************************************************/
1647
1648 struct printif cups_printif =
1649 {
1650 PRINT_CUPS,
1651 cups_queue_get,
1652 cups_queue_pause,
1653 cups_queue_resume,
1654 cups_job_delete,
1655 cups_job_pause,
1656 cups_job_resume,
1657 cups_job_submit,
1658 };
1659
1660 bool cups_pull_comment_location(TALLOC_CTX *mem_ctx,
1661 const char *printername,
1662 char **comment,
1663 char **location)
1664 {
1665 TALLOC_CTX *frame = talloc_stackframe();
1666 http_t *http = NULL; /* HTTP connection to server */
1667 ipp_t *request = NULL, /* IPP Request */
1668 *response = NULL; /* IPP Response */
1669 ipp_attribute_t *attr; /* Current attribute */
1670 cups_lang_t *language = NULL; /* Default language */
1671 char uri[HTTP_MAX_URI];
1672 char *server = NULL;
1673 char *sharename = NULL;
1674 char *name = NULL;
1675 static const char *requested[] =/* Requested attributes */
1676 {
1677 "printer-name",
1678 "printer-info",
1679 "printer-location"
1680 };
1681 bool ret = False;
1682 size_t size;
1683
1684 DEBUG(5, ("pulling %s location\n", printername));
1685
1686 /*
1687 * Make sure we don't ask for passwords...
1688 */
1689
1690 cupsSetPasswordCB(cups_passwd_cb);
1691
1692 /*
1693 * Try to connect to the server...
1694 */
1695
1696 if ((http = cups_connect(frame)) == NULL) {
1697 goto out;
1698 }
1699
1700 request = ippNew();
1701
1702 request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1703 request->request.op.request_id = 1;
1704
1705 language = cupsLangDefault();
1706
1707 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1708 "attributes-charset", NULL, "utf-8");
1709
1710 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1711 "attributes-natural-language", NULL, language->language);
1712
1713 if (lp_cups_server() != NULL && strlen(lp_cups_server()) > 0) {
1714 if (!push_utf8_talloc(frame, &server, lp_cups_server(), &size)) {
1715 goto out;
1716 }
1717 } else {
1718 server = talloc_strdup(frame,cupsServer());
1719 }
1720 if (server) {
1721 goto out;
1722 }
1723 if (!push_utf8_talloc(frame, &sharename, printername, &size)) {
1724 goto out;
1725 }
1726 slprintf(uri, sizeof(uri) - 1, "ipp://%s/printers/%s",
1727 server, sharename);
1728
1729 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1730 "printer-uri", NULL, uri);
1731
1732 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1733 "requested-attributes",
1734 (sizeof(requested) / sizeof(requested[0])),
1735 NULL, requested);
1736
1737 /*
1738 * Do the request and get back a response...
1739 */
1740
1741 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1742 DEBUG(0,("Unable to get printer attributes - %s\n",
1743 ippErrorString(cupsLastError())));
1744 goto out;
1745 }
1746
1747 for (attr = response->attrs; attr != NULL;) {
1748 /*
1749 * Skip leading attributes until we hit a printer...
1750 */
1751
1752 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
1753 attr = attr->next;
1754
1755 if (attr == NULL)
1756 break;
1757
1758 /*
1759 * Pull the needed attributes from this printer...
1760 */
1761
1762 while ( attr && (attr->group_tag == IPP_TAG_PRINTER) ) {
1763 if (strcmp(attr->name, "printer-name") == 0 &&
1764 attr->value_tag == IPP_TAG_NAME) {
1765 if (!pull_utf8_talloc(frame,
1766 &name,
1767 attr->values[0].string.text,
1768 &size)) {
1769 goto out;
1770 }
1771 }
1772
1773 /* Grab the comment if we don't have one */
1774 if ( (strcmp(attr->name, "printer-info") == 0)
1775 && (attr->value_tag == IPP_TAG_TEXT))
1776 {
1777 if (!pull_utf8_talloc(mem_ctx,
1778 comment,
1779 attr->values[0].string.text,
1780 &size)) {
1781 goto out;
1782 }
1783 DEBUG(5,("cups_pull_comment_location: Using cups comment: %s\n",
1784 *comment));
1785 }
1786
1787 /* Grab the location if we don't have one */
1788 if ( (strcmp(attr->name, "printer-location") == 0)
1789 && (attr->value_tag == IPP_TAG_TEXT))
1790 {
1791 if (!pull_utf8_talloc(mem_ctx,
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 }
1800
1801 attr = attr->next;
1802 }
1803
1804 /*
1805 * We have everything needed...
1806 */
1807
1808 if (name != NULL)
1809 break;
1810 }
1811
1812 ret = True;
1813
1814 out:
1815 if (response)
1816 ippDelete(response);
1817
1818 if (request) {
1819 ippDelete(request);
1820 }
1821
1822 if (language)
1823 cupsLangFree(language);
1824
1825 if (http)
1826 httpClose(http);
1827
1828 TALLOC_FREE(frame);
1829 return ret;
1830 }
1831
1832 #else
1833 /* this keeps fussy compilers happy */
1834 void print_cups_dummy(void);
1835 void print_cups_dummy(void) {}
1836 #endif /* HAVE_CUPS */
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