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s3:smbd: close the low level fd of the base_fsp, if the file was created
[Samba.git] / source / printing / print_cups.c
blob8d32ddbc71e0394848a96310f81c16f8ff5a5521
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 extern userdom_struct current_user_info;
33
34 /*
35 * 'cups_passwd_cb()' - The CUPS password callback...
36 */
37
38 static const char * /* O - Password or NULL */
39 cups_passwd_cb(const char *prompt) /* I - Prompt */
40 {
41 /*
42 * Always return NULL to indicate that no password is available...
43 */
44
45 return (NULL);
46 }
47
48 static http_t *cups_connect(TALLOC_CTX *frame)
49 {
50 http_t *http = NULL;
51 char *server = NULL, *p = NULL;
52 int port;
53
54 if (lp_cups_server() != NULL && strlen(lp_cups_server()) > 0) {
55 if (push_utf8_talloc(frame, &server, lp_cups_server()) == (size_t)-1) {
56 return NULL;
57 }
58 } else {
59 server = talloc_strdup(frame,cupsServer());
60 }
61 if (!server) {
62 return NULL;
63 }
64
65 p = strchr(server, ':');
66 if (p) {
67 port = atoi(p+1);
68 *p = '\0';
69 } else {
70 port = ippPort();
71 }
72
73 DEBUG(10, ("connecting to cups server %s:%d\n",
74 server, port));
75
76 if ((http = httpConnect(server, port)) == NULL) {
77 DEBUG(0,("Unable to connect to CUPS server %s:%d - %s\n",
78 server, port, strerror(errno)));
79 return NULL;
80 }
81
82 return http;
83 }
84
85 static void send_pcap_info(const char *name, const char *info, void *pd)
86 {
87 int fd = *(int *)pd;
88 size_t namelen = name ? strlen(name)+1 : 0;
89 size_t infolen = info ? strlen(info)+1 : 0;
90
91 DEBUG(11,("send_pcap_info: writing namelen %u\n", (unsigned int)namelen));
92 if (sys_write(fd, &namelen, sizeof(namelen)) != sizeof(namelen)) {
93 DEBUG(10,("send_pcap_info: namelen write failed %s\n",
94 strerror(errno)));
95 return;
96 }
97 DEBUG(11,("send_pcap_info: writing infolen %u\n", (unsigned int)infolen));
98 if (sys_write(fd, &infolen, sizeof(infolen)) != sizeof(infolen)) {
99 DEBUG(10,("send_pcap_info: infolen write failed %s\n",
100 strerror(errno)));
101 return;
102 }
103 if (namelen) {
104 DEBUG(11,("send_pcap_info: writing name %s\n", name));
105 if (sys_write(fd, name, namelen) != namelen) {
106 DEBUG(10,("send_pcap_info: name write failed %s\n",
107 strerror(errno)));
108 return;
109 }
110 }
111 if (infolen) {
112 DEBUG(11,("send_pcap_info: writing info %s\n", info));
113 if (sys_write(fd, info, infolen) != infolen) {
114 DEBUG(10,("send_pcap_info: info write failed %s\n",
115 strerror(errno)));
116 return;
117 }
118 }
119 }
120
121 static bool cups_cache_reload_async(int fd)
122 {
123 TALLOC_CTX *frame = talloc_stackframe();
124 struct pcap_cache *tmp_pcap_cache = NULL;
125 http_t *http = NULL; /* HTTP connection to server */
126 ipp_t *request = NULL, /* IPP Request */
127 *response = NULL; /* IPP Response */
128 ipp_attribute_t *attr; /* Current attribute */
129 cups_lang_t *language = NULL; /* Default language */
130 char *name, /* printer-name attribute */
131 *info; /* printer-info attribute */
132 static const char *requested[] =/* Requested attributes */
133 {
134 "printer-name",
135 "printer-info"
136 };
137 bool ret = False;
138
139 DEBUG(5, ("reloading cups printcap cache\n"));
140
141 /*
142 * Make sure we don't ask for passwords...
143 */
144
145 cupsSetPasswordCB(cups_passwd_cb);
146
147 /*
148 * Try to connect to the server...
149 */
150
151 if ((http = cups_connect(frame)) == NULL) {
152 goto out;
153 }
154
155 /*
156 * Build a CUPS_GET_PRINTERS request, which requires the following
157 * attributes:
158 *
159 * attributes-charset
160 * attributes-natural-language
161 * requested-attributes
162 */
163
164 request = ippNew();
165
166 request->request.op.operation_id = CUPS_GET_PRINTERS;
167 request->request.op.request_id = 1;
168
169 language = cupsLangDefault();
170
171 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
172 "attributes-charset", NULL, "utf-8");
173
174 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
175 "attributes-natural-language", NULL, language->language);
176
177 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
178 "requested-attributes",
179 (sizeof(requested) / sizeof(requested[0])),
180 NULL, requested);
181
182 /*
183 * Do the request and get back a response...
184 */
185
186 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
187 DEBUG(0,("Unable to get printer list - %s\n",
188 ippErrorString(cupsLastError())));
189 goto out;
190 }
191
192 for (attr = response->attrs; attr != NULL;) {
193 /*
194 * Skip leading attributes until we hit a printer...
195 */
196
197 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
198 attr = attr->next;
199
200 if (attr == NULL)
201 break;
202
203 /*
204 * Pull the needed attributes from this printer...
205 */
206
207 name = NULL;
208 info = NULL;
209
210 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER) {
211 if (strcmp(attr->name, "printer-name") == 0 &&
212 attr->value_tag == IPP_TAG_NAME) {
213 pull_utf8_talloc(frame,
214 &name,
215 attr->values[0].string.text);
216 }
217
218 if (strcmp(attr->name, "printer-info") == 0 &&
219 attr->value_tag == IPP_TAG_TEXT) {
220 pull_utf8_talloc(frame,
221 &info,
222 attr->values[0].string.text);
223 }
224
225 attr = attr->next;
226 }
227
228 /*
229 * See if we have everything needed...
230 */
231
232 if (name == NULL)
233 break;
234
235 if (!pcap_cache_add_specific(&tmp_pcap_cache, name, info)) {
236 goto out;
237 }
238 }
239
240 ippDelete(response);
241 response = NULL;
242
243 /*
244 * Build a CUPS_GET_CLASSES request, which requires the following
245 * attributes:
246 *
247 * attributes-charset
248 * attributes-natural-language
249 * requested-attributes
250 */
251
252 request = ippNew();
253
254 request->request.op.operation_id = CUPS_GET_CLASSES;
255 request->request.op.request_id = 1;
256
257 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
258 "attributes-charset", NULL, "utf-8");
259
260 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
261 "attributes-natural-language", NULL, language->language);
262
263 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
264 "requested-attributes",
265 (sizeof(requested) / sizeof(requested[0])),
266 NULL, requested);
267
268 /*
269 * Do the request and get back a response...
270 */
271
272 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
273 DEBUG(0,("Unable to get printer list - %s\n",
274 ippErrorString(cupsLastError())));
275 goto out;
276 }
277
278 for (attr = response->attrs; attr != NULL;) {
279 /*
280 * Skip leading attributes until we hit a printer...
281 */
282
283 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
284 attr = attr->next;
285
286 if (attr == NULL)
287 break;
288
289 /*
290 * Pull the needed attributes from this printer...
291 */
292
293 name = NULL;
294 info = NULL;
295
296 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER) {
297 if (strcmp(attr->name, "printer-name") == 0 &&
298 attr->value_tag == IPP_TAG_NAME) {
299 pull_utf8_talloc(frame,
300 &name,
301 attr->values[0].string.text);
302 }
303
304 if (strcmp(attr->name, "printer-info") == 0 &&
305 attr->value_tag == IPP_TAG_TEXT) {
306 pull_utf8_talloc(frame,
307 &info,
308 attr->values[0].string.text);
309 }
310
311 attr = attr->next;
312 }
313
314 /*
315 * See if we have everything needed...
316 */
317
318 if (name == NULL)
319 break;
320
321 if (!pcap_cache_add_specific(&tmp_pcap_cache, name, info)) {
322 goto out;
323 }
324 }
325
326 ret = True;
327
328 out:
329 if (response)
330 ippDelete(response);
331
332 if (language)
333 cupsLangFree(language);
334
335 if (http)
336 httpClose(http);
337
338 /* Send all the entries up the pipe. */
339 if (tmp_pcap_cache) {
340 pcap_printer_fn_specific(tmp_pcap_cache,
341 send_pcap_info,
342 (void *)&fd);
343
344 pcap_cache_destroy_specific(&tmp_pcap_cache);
345 }
346 TALLOC_FREE(frame);
347 return ret;
348 }
349
350 static struct pcap_cache *local_pcap_copy;
351 struct fd_event *cache_fd_event;
352
353 static bool cups_pcap_load_async(int *pfd)
354 {
355 int fds[2];
356 pid_t pid;
357
358 *pfd = -1;
359
360 if (cache_fd_event) {
361 DEBUG(3,("cups_pcap_load_async: already waiting for "
362 "a refresh event\n" ));
363 return false;
364 }
365
366 DEBUG(5,("cups_pcap_load_async: asynchronously loading cups printers\n"));
367
368 if (pipe(fds) == -1) {
369 return false;
370 }
371
372 pid = sys_fork();
373 if (pid == (pid_t)-1) {
374 DEBUG(10,("cups_pcap_load_async: fork failed %s\n",
375 strerror(errno) ));
376 close(fds[0]);
377 close(fds[1]);
378 return false;
379 }
380
381 if (pid) {
382 DEBUG(10,("cups_pcap_load_async: child pid = %u\n",
383 (unsigned int)pid ));
384 /* Parent. */
385 close(fds[1]);
386 *pfd = fds[0];
387 return true;
388 }
389
390 /* Child. */
391 if (!reinit_after_fork(smbd_messaging_context(), true)) {
392 DEBUG(0,("cups_pcap_load_async: reinit_after_fork() failed\n"));
393 smb_panic("cups_pcap_load_async: reinit_after_fork() failed");
394 }
395
396 close(fds[0]);
397 cups_cache_reload_async(fds[1]);
398 close(fds[1]);
399 _exit(0);
400 }
401
402 static void cups_async_callback(struct event_context *event_ctx,
403 struct fd_event *event,
404 uint16 flags,
405 void *p)
406 {
407 TALLOC_CTX *frame = talloc_stackframe();
408 int fd = *(int *)p;
409 struct pcap_cache *tmp_pcap_cache = NULL;
410
411 DEBUG(5,("cups_async_callback: callback received for printer data. "
412 "fd = %d\n", fd));
413
414 while (1) {
415 char *name = NULL, *info = NULL;
416 size_t namelen = 0, infolen = 0;
417 ssize_t ret = -1;
418
419 ret = sys_read(fd, &namelen, sizeof(namelen));
420 if (ret == 0) {
421 /* EOF */
422 break;
423 }
424 if (ret != sizeof(namelen)) {
425 DEBUG(10,("cups_async_callback: namelen read failed %d %s\n",
426 errno, strerror(errno)));
427 break;
428 }
429
430 DEBUG(11,("cups_async_callback: read namelen %u\n",
431 (unsigned int)namelen));
432
433 ret = sys_read(fd, &infolen, sizeof(infolen));
434 if (ret == 0) {
435 /* EOF */
436 break;
437 }
438 if (ret != sizeof(infolen)) {
439 DEBUG(10,("cups_async_callback: infolen read failed %s\n",
440 strerror(errno)));
441 break;
442 }
443
444 DEBUG(11,("cups_async_callback: read infolen %u\n",
445 (unsigned int)infolen));
446
447 if (namelen) {
448 name = TALLOC_ARRAY(frame, char, namelen);
449 if (!name) {
450 break;
451 }
452 ret = sys_read(fd, name, namelen);
453 if (ret == 0) {
454 /* EOF */
455 break;
456 }
457 if (ret != namelen) {
458 DEBUG(10,("cups_async_callback: name read failed %s\n",
459 strerror(errno)));
460 break;
461 }
462 DEBUG(11,("cups_async_callback: read name %s\n",
463 name));
464 } else {
465 name = NULL;
466 }
467 if (infolen) {
468 info = TALLOC_ARRAY(frame, char, infolen);
469 if (!info) {
470 break;
471 }
472 ret = sys_read(fd, info, infolen);
473 if (ret == 0) {
474 /* EOF */
475 break;
476 }
477 if (ret != infolen) {
478 DEBUG(10,("cups_async_callback: info read failed %s\n",
479 strerror(errno)));
480 break;
481 }
482 DEBUG(11,("cups_async_callback: read info %s\n",
483 info));
484 } else {
485 info = NULL;
486 }
487
488 /* Add to our local pcap cache. */
489 pcap_cache_add_specific(&tmp_pcap_cache, name, info);
490 TALLOC_FREE(name);
491 TALLOC_FREE(info);
492 }
493
494 TALLOC_FREE(frame);
495 if (tmp_pcap_cache) {
496 /* We got a namelist, replace our local cache. */
497 pcap_cache_destroy_specific(&local_pcap_copy);
498 local_pcap_copy = tmp_pcap_cache;
499
500 /* And the systemwide pcap cache. */
501 pcap_cache_replace(local_pcap_copy);
502 } else {
503 DEBUG(2,("cups_async_callback: failed to read a new "
504 "printer list\n"));
505 }
506 close(fd);
507 TALLOC_FREE(p);
508 TALLOC_FREE(cache_fd_event);
509 }
510
511 bool cups_cache_reload(void)
512 {
513 int *p_pipe_fd = TALLOC_P(NULL, int);
514
515 if (!p_pipe_fd) {
516 return false;
517 }
518
519 *p_pipe_fd = -1;
520
521 /* Set up an async refresh. */
522 if (!cups_pcap_load_async(p_pipe_fd)) {
523 return false;
524 }
525 if (!local_pcap_copy) {
526 /* We have no local cache, wait directly for
527 * async refresh to complete.
528 */
529 DEBUG(10,("cups_cache_reload: sync read on fd %d\n",
530 *p_pipe_fd ));
531
532 cups_async_callback(smbd_event_context(),
533 NULL,
534 EVENT_FD_READ,
535 (void *)p_pipe_fd);
536 if (!local_pcap_copy) {
537 return false;
538 }
539 } else {
540 /* Replace the system cache with our
541 * local copy. */
542 pcap_cache_replace(local_pcap_copy);
543
544 DEBUG(10,("cups_cache_reload: async read on fd %d\n",
545 *p_pipe_fd ));
546
547 /* Trigger an event when the pipe can be read. */
548 cache_fd_event = event_add_fd(smbd_event_context(),
549 NULL, *p_pipe_fd,
550 EVENT_FD_READ,
551 cups_async_callback,
552 (void *)p_pipe_fd);
553 if (!cache_fd_event) {
554 close(*p_pipe_fd);
555 TALLOC_FREE(p_pipe_fd);
556 return false;
557 }
558 }
559 return true;
560 }
561
562 /*
563 * 'cups_job_delete()' - Delete a job.
564 */
565
566 static int cups_job_delete(const char *sharename, const char *lprm_command, struct printjob *pjob)
567 {
568 TALLOC_CTX *frame = talloc_stackframe();
569 int ret = 1; /* Return value */
570 http_t *http = NULL; /* HTTP connection to server */
571 ipp_t *request = NULL, /* IPP Request */
572 *response = NULL; /* IPP Response */
573 cups_lang_t *language = NULL; /* Default language */
574 char *user = NULL;
575 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
576
577
578 DEBUG(5,("cups_job_delete(%s, %p (%d))\n", sharename, pjob, pjob->sysjob));
579
580 /*
581 * Make sure we don't ask for passwords...
582 */
583
584 cupsSetPasswordCB(cups_passwd_cb);
585
586 /*
587 * Try to connect to the server...
588 */
589
590 if ((http = cups_connect(frame)) == NULL) {
591 goto out;
592 }
593
594 /*
595 * Build an IPP_CANCEL_JOB request, which requires the following
596 * attributes:
597 *
598 * attributes-charset
599 * attributes-natural-language
600 * job-uri
601 * requesting-user-name
602 */
603
604 request = ippNew();
605
606 request->request.op.operation_id = IPP_CANCEL_JOB;
607 request->request.op.request_id = 1;
608
609 language = cupsLangDefault();
610
611 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
612 "attributes-charset", NULL, "utf-8");
613
614 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
615 "attributes-natural-language", NULL, language->language);
616
617 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
618
619 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
620
621 if (push_utf8_talloc(frame, &user, pjob->user) == (size_t)-1) {
622 goto out;
623 }
624
625 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
626 NULL, user);
627
628 /*
629 * Do the request and get back a response...
630 */
631
632 if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
633 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
634 DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
635 ippErrorString(cupsLastError())));
636 } else {
637 ret = 0;
638 }
639 } else {
640 DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
641 ippErrorString(cupsLastError())));
642 }
643
644 out:
645 if (response)
646 ippDelete(response);
647
648 if (language)
649 cupsLangFree(language);
650
651 if (http)
652 httpClose(http);
653
654 TALLOC_FREE(frame);
655 return ret;
656 }
657
658
659 /*
660 * 'cups_job_pause()' - Pause a job.
661 */
662
663 static int cups_job_pause(int snum, struct printjob *pjob)
664 {
665 TALLOC_CTX *frame = talloc_stackframe();
666 int ret = 1; /* Return value */
667 http_t *http = NULL; /* HTTP connection to server */
668 ipp_t *request = NULL, /* IPP Request */
669 *response = NULL; /* IPP Response */
670 cups_lang_t *language = NULL; /* Default language */
671 char *user = NULL;
672 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
673
674
675 DEBUG(5,("cups_job_pause(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
676
677 /*
678 * Make sure we don't ask for passwords...
679 */
680
681 cupsSetPasswordCB(cups_passwd_cb);
682
683 /*
684 * Try to connect to the server...
685 */
686
687 if ((http = cups_connect(frame)) == NULL) {
688 goto out;
689 }
690
691 /*
692 * Build an IPP_HOLD_JOB request, which requires the following
693 * attributes:
694 *
695 * attributes-charset
696 * attributes-natural-language
697 * job-uri
698 * requesting-user-name
699 */
700
701 request = ippNew();
702
703 request->request.op.operation_id = IPP_HOLD_JOB;
704 request->request.op.request_id = 1;
705
706 language = cupsLangDefault();
707
708 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
709 "attributes-charset", NULL, "utf-8");
710
711 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
712 "attributes-natural-language", NULL, language->language);
713
714 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
715
716 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
717
718 if (push_utf8_talloc(frame, &user, pjob->user) == (size_t)-1) {
719 goto out;
720 }
721 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
722 NULL, user);
723
724 /*
725 * Do the request and get back a response...
726 */
727
728 if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
729 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
730 DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
731 ippErrorString(cupsLastError())));
732 } else {
733 ret = 0;
734 }
735 } else {
736 DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
737 ippErrorString(cupsLastError())));
738 }
739
740 out:
741 if (response)
742 ippDelete(response);
743
744 if (language)
745 cupsLangFree(language);
746
747 if (http)
748 httpClose(http);
749
750 TALLOC_FREE(frame);
751 return ret;
752 }
753
754
755 /*
756 * 'cups_job_resume()' - Resume a paused job.
757 */
758
759 static int cups_job_resume(int snum, struct printjob *pjob)
760 {
761 TALLOC_CTX *frame = talloc_stackframe();
762 int ret = 1; /* Return value */
763 http_t *http = NULL; /* HTTP connection to server */
764 ipp_t *request = NULL, /* IPP Request */
765 *response = NULL; /* IPP Response */
766 cups_lang_t *language = NULL; /* Default language */
767 char *user = NULL;
768 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
769
770
771 DEBUG(5,("cups_job_resume(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
772
773 /*
774 * Make sure we don't ask for passwords...
775 */
776
777 cupsSetPasswordCB(cups_passwd_cb);
778
779 /*
780 * Try to connect to the server...
781 */
782
783 if ((http = cups_connect(frame)) == NULL) {
784 goto out;
785 }
786
787 /*
788 * Build an IPP_RELEASE_JOB request, which requires the following
789 * attributes:
790 *
791 * attributes-charset
792 * attributes-natural-language
793 * job-uri
794 * requesting-user-name
795 */
796
797 request = ippNew();
798
799 request->request.op.operation_id = IPP_RELEASE_JOB;
800 request->request.op.request_id = 1;
801
802 language = cupsLangDefault();
803
804 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
805 "attributes-charset", NULL, "utf-8");
806
807 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
808 "attributes-natural-language", NULL, language->language);
809
810 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
811
812 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
813
814 if (push_utf8_talloc(frame, &user, pjob->user) == (size_t)-1) {
815 goto out;
816 }
817 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
818 NULL, user);
819
820 /*
821 * Do the request and get back a response...
822 */
823
824 if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
825 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
826 DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
827 ippErrorString(cupsLastError())));
828 } else {
829 ret = 0;
830 }
831 } else {
832 DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
833 ippErrorString(cupsLastError())));
834 }
835
836 out:
837 if (response)
838 ippDelete(response);
839
840 if (language)
841 cupsLangFree(language);
842
843 if (http)
844 httpClose(http);
845
846 TALLOC_FREE(frame);
847 return ret;
848 }
849
850
851 /*
852 * 'cups_job_submit()' - Submit a job for printing.
853 */
854
855 static int cups_job_submit(int snum, struct printjob *pjob)
856 {
857 TALLOC_CTX *frame = talloc_stackframe();
858 int ret = 1; /* Return value */
859 http_t *http = NULL; /* HTTP connection to server */
860 ipp_t *request = NULL, /* IPP Request */
861 *response = NULL; /* IPP Response */
862 cups_lang_t *language = NULL; /* Default language */
863 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
864 const char *clientname = NULL; /* hostname of client for job-originating-host attribute */
865 char *new_jobname = NULL;
866 int num_options = 0;
867 cups_option_t *options = NULL;
868 char *printername = NULL;
869 char *user = NULL;
870 char *jobname = NULL;
871 char *cupsoptions = NULL;
872 char *filename = NULL;
873 char addr[INET6_ADDRSTRLEN];
874
875 DEBUG(5,("cups_job_submit(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
876
877 /*
878 * Make sure we don't ask for passwords...
879 */
880
881 cupsSetPasswordCB(cups_passwd_cb);
882
883 /*
884 * Try to connect to the server...
885 */
886
887 if ((http = cups_connect(frame)) == NULL) {
888 goto out;
889 }
890
891 /*
892 * Build an IPP_PRINT_JOB request, which requires the following
893 * attributes:
894 *
895 * attributes-charset
896 * attributes-natural-language
897 * printer-uri
898 * requesting-user-name
899 * [document-data]
900 */
901
902 request = ippNew();
903
904 request->request.op.operation_id = IPP_PRINT_JOB;
905 request->request.op.request_id = 1;
906
907 language = cupsLangDefault();
908
909 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
910 "attributes-charset", NULL, "utf-8");
911
912 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
913 "attributes-natural-language", NULL, language->language);
914
915 if (push_utf8_talloc(frame, &printername, PRINTERNAME(snum)) == (size_t)-1) {
916 goto out;
917 }
918 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
919 printername);
920
921 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
922 "printer-uri", NULL, uri);
923
924 if (push_utf8_talloc(frame, &user, pjob->user) == (size_t)-1) {
925 goto out;
926 }
927 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
928 NULL, user);
929
930 clientname = client_name(get_client_fd());
931 if (strcmp(clientname, "UNKNOWN") == 0) {
932 clientname = client_addr(get_client_fd(),addr,sizeof(addr));
933 }
934
935 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
936 "job-originating-host-name", NULL,
937 clientname);
938
939 if (push_utf8_talloc(frame, &jobname, pjob->jobname) == (size_t)-1) {
940 goto out;
941 }
942 new_jobname = talloc_asprintf(frame,
943 "%s%.8u %s", PRINT_SPOOL_PREFIX,
944 (unsigned int)pjob->smbjob,
945 jobname);
946 if (new_jobname == NULL) {
947 goto out;
948 }
949
950 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL,
951 new_jobname);
952
953 /*
954 * add any options defined in smb.conf
955 */
956
957 if (push_utf8_talloc(frame, &cupsoptions, lp_cups_options(snum)) == (size_t)-1) {
958 goto out;
959 }
960 num_options = 0;
961 options = NULL;
962 num_options = cupsParseOptions(cupsoptions, num_options, &options);
963
964 if ( num_options )
965 cupsEncodeOptions(request, num_options, options);
966
967 /*
968 * Do the request and get back a response...
969 */
970
971 slprintf(uri, sizeof(uri) - 1, "/printers/%s", printername);
972
973 if (push_utf8_talloc(frame, &filename, pjob->filename) == (size_t)-1) {
974 goto out;
975 }
976 if ((response = cupsDoFileRequest(http, request, uri, pjob->filename)) != NULL) {
977 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
978 DEBUG(0,("Unable to print file to %s - %s\n", PRINTERNAME(snum),
979 ippErrorString(cupsLastError())));
980 } else {
981 ret = 0;
982 }
983 } else {
984 DEBUG(0,("Unable to print file to `%s' - %s\n", PRINTERNAME(snum),
985 ippErrorString(cupsLastError())));
986 }
987
988 if ( ret == 0 )
989 unlink(pjob->filename);
990 /* else print_job_end will do it for us */
991
992 out:
993 if (response)
994 ippDelete(response);
995
996 if (language)
997 cupsLangFree(language);
998
999 if (http)
1000 httpClose(http);
1001
1002 TALLOC_FREE(frame);
1003
1004 return ret;
1005 }
1006
1007 /*
1008 * 'cups_queue_get()' - Get all the jobs in the print queue.
1009 */
1010
1011 static int cups_queue_get(const char *sharename,
1012 enum printing_types printing_type,
1013 char *lpq_command,
1014 print_queue_struct **q,
1015 print_status_struct *status)
1016 {
1017 TALLOC_CTX *frame = talloc_stackframe();
1018 char *printername = NULL;
1019 http_t *http = NULL; /* HTTP connection to server */
1020 ipp_t *request = NULL, /* IPP Request */
1021 *response = NULL; /* IPP Response */
1022 ipp_attribute_t *attr = NULL; /* Current attribute */
1023 cups_lang_t *language = NULL; /* Default language */
1024 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
1025 int qcount = 0, /* Number of active queue entries */
1026 qalloc = 0; /* Number of queue entries allocated */
1027 print_queue_struct *queue = NULL, /* Queue entries */
1028 *temp; /* Temporary pointer for queue */
1029 char *user_name = NULL, /* job-originating-user-name attribute */
1030 *job_name = NULL; /* job-name attribute */
1031 int job_id; /* job-id attribute */
1032 int job_k_octets; /* job-k-octets attribute */
1033 time_t job_time; /* time-at-creation attribute */
1034 ipp_jstate_t job_status; /* job-status attribute */
1035 int job_priority; /* job-priority attribute */
1036 static const char *jattrs[] = /* Requested job attributes */
1037 {
1038 "job-id",
1039 "job-k-octets",
1040 "job-name",
1041 "job-originating-user-name",
1042 "job-priority",
1043 "job-state",
1044 "time-at-creation",
1045 };
1046 static const char *pattrs[] = /* Requested printer attributes */
1047 {
1048 "printer-state",
1049 "printer-state-message"
1050 };
1051
1052 *q = NULL;
1053
1054 /* HACK ALERT!!! The problem with support the 'printer name'
1055 option is that we key the tdb off the sharename. So we will
1056 overload the lpq_command string to pass in the printername
1057 (which is basically what we do for non-cups printers ... using
1058 the lpq_command to get the queue listing). */
1059
1060 if (push_utf8_talloc(frame, &printername, lpq_command) == (size_t)-1) {
1061 goto out;
1062 }
1063 DEBUG(5,("cups_queue_get(%s, %p, %p)\n", lpq_command, q, status));
1064
1065 /*
1066 * Make sure we don't ask for passwords...
1067 */
1068
1069 cupsSetPasswordCB(cups_passwd_cb);
1070
1071 /*
1072 * Try to connect to the server...
1073 */
1074
1075 if ((http = cups_connect(frame)) == NULL) {
1076 goto out;
1077 }
1078
1079 /*
1080 * Generate the printer URI...
1081 */
1082
1083 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", printername);
1084
1085 /*
1086 * Build an IPP_GET_JOBS request, which requires the following
1087 * attributes:
1088 *
1089 * attributes-charset
1090 * attributes-natural-language
1091 * requested-attributes
1092 * printer-uri
1093 */
1094
1095 request = ippNew();
1096
1097 request->request.op.operation_id = IPP_GET_JOBS;
1098 request->request.op.request_id = 1;
1099
1100 language = cupsLangDefault();
1101
1102 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1103 "attributes-charset", NULL, "utf-8");
1104
1105 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1106 "attributes-natural-language", NULL, language->language);
1107
1108 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1109 "requested-attributes",
1110 (sizeof(jattrs) / sizeof(jattrs[0])),
1111 NULL, jattrs);
1112
1113 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1114 "printer-uri", NULL, uri);
1115
1116 /*
1117 * Do the request and get back a response...
1118 */
1119
1120 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1121 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
1122 ippErrorString(cupsLastError())));
1123 goto out;
1124 }
1125
1126 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1127 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
1128 ippErrorString(response->request.status.status_code)));
1129 goto out;
1130 }
1131
1132 /*
1133 * Process the jobs...
1134 */
1135
1136 qcount = 0;
1137 qalloc = 0;
1138 queue = NULL;
1139
1140 for (attr = response->attrs; attr != NULL; attr = attr->next) {
1141 /*
1142 * Skip leading attributes until we hit a job...
1143 */
1144
1145 while (attr != NULL && attr->group_tag != IPP_TAG_JOB)
1146 attr = attr->next;
1147
1148 if (attr == NULL)
1149 break;
1150
1151 /*
1152 * Allocate memory as needed...
1153 */
1154 if (qcount >= qalloc) {
1155 qalloc += 16;
1156
1157 queue = SMB_REALLOC_ARRAY(queue, print_queue_struct, qalloc);
1158
1159 if (queue == NULL) {
1160 DEBUG(0,("cups_queue_get: Not enough memory!"));
1161 qcount = 0;
1162 goto out;
1163 }
1164 }
1165
1166 temp = queue + qcount;
1167 memset(temp, 0, sizeof(print_queue_struct));
1168
1169 /*
1170 * Pull the needed attributes from this job...
1171 */
1172
1173 job_id = 0;
1174 job_priority = 50;
1175 job_status = IPP_JOB_PENDING;
1176 job_time = 0;
1177 job_k_octets = 0;
1178 user_name = NULL;
1179 job_name = NULL;
1180
1181 while (attr != NULL && attr->group_tag == IPP_TAG_JOB) {
1182 if (attr->name == NULL) {
1183 attr = attr->next;
1184 break;
1185 }
1186
1187 if (strcmp(attr->name, "job-id") == 0 &&
1188 attr->value_tag == IPP_TAG_INTEGER)
1189 job_id = attr->values[0].integer;
1190
1191 if (strcmp(attr->name, "job-k-octets") == 0 &&
1192 attr->value_tag == IPP_TAG_INTEGER)
1193 job_k_octets = attr->values[0].integer;
1194
1195 if (strcmp(attr->name, "job-priority") == 0 &&
1196 attr->value_tag == IPP_TAG_INTEGER)
1197 job_priority = attr->values[0].integer;
1198
1199 if (strcmp(attr->name, "job-state") == 0 &&
1200 attr->value_tag == IPP_TAG_ENUM)
1201 job_status = (ipp_jstate_t)(attr->values[0].integer);
1202
1203 if (strcmp(attr->name, "time-at-creation") == 0 &&
1204 attr->value_tag == IPP_TAG_INTEGER)
1205 job_time = attr->values[0].integer;
1206
1207 if (strcmp(attr->name, "job-name") == 0 &&
1208 attr->value_tag == IPP_TAG_NAME) {
1209 pull_utf8_talloc(frame,
1210 &job_name,
1211 attr->values[0].string.text);
1212 }
1213
1214 if (strcmp(attr->name, "job-originating-user-name") == 0 &&
1215 attr->value_tag == IPP_TAG_NAME) {
1216 pull_utf8_talloc(frame,
1217 &user_name,
1218 attr->values[0].string.text);
1219 }
1220
1221 attr = attr->next;
1222 }
1223
1224 /*
1225 * See if we have everything needed...
1226 */
1227
1228 if (user_name == NULL || job_name == NULL || job_id == 0) {
1229 if (attr == NULL)
1230 break;
1231 else
1232 continue;
1233 }
1234
1235 temp->job = job_id;
1236 temp->size = job_k_octets * 1024;
1237 temp->status = job_status == IPP_JOB_PENDING ? LPQ_QUEUED :
1238 job_status == IPP_JOB_STOPPED ? LPQ_PAUSED :
1239 job_status == IPP_JOB_HELD ? LPQ_PAUSED :
1240 LPQ_PRINTING;
1241 temp->priority = job_priority;
1242 temp->time = job_time;
1243 strlcpy(temp->fs_user, user_name, sizeof(temp->fs_user));
1244 strlcpy(temp->fs_file, job_name, sizeof(temp->fs_file));
1245
1246 qcount ++;
1247
1248 if (attr == NULL)
1249 break;
1250 }
1251
1252 ippDelete(response);
1253 response = NULL;
1254
1255 /*
1256 * Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the
1257 * following attributes:
1258 *
1259 * attributes-charset
1260 * attributes-natural-language
1261 * requested-attributes
1262 * printer-uri
1263 */
1264
1265 request = ippNew();
1266
1267 request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1268 request->request.op.request_id = 1;
1269
1270 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1271 "attributes-charset", NULL, "utf-8");
1272
1273 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1274 "attributes-natural-language", NULL, language->language);
1275
1276 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1277 "requested-attributes",
1278 (sizeof(pattrs) / sizeof(pattrs[0])),
1279 NULL, pattrs);
1280
1281 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1282 "printer-uri", NULL, uri);
1283
1284 /*
1285 * Do the request and get back a response...
1286 */
1287
1288 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1289 DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
1290 ippErrorString(cupsLastError())));
1291 *q = queue;
1292 goto out;
1293 }
1294
1295 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1296 DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
1297 ippErrorString(response->request.status.status_code)));
1298 *q = queue;
1299 goto out;
1300 }
1301
1302 /*
1303 * Get the current printer status and convert it to the SAMBA values.
1304 */
1305
1306 if ((attr = ippFindAttribute(response, "printer-state", IPP_TAG_ENUM)) != NULL) {
1307 if (attr->values[0].integer == IPP_PRINTER_STOPPED)
1308 status->status = LPSTAT_STOPPED;
1309 else
1310 status->status = LPSTAT_OK;
1311 }
1312
1313 if ((attr = ippFindAttribute(response, "printer-state-message",
1314 IPP_TAG_TEXT)) != NULL) {
1315 char *msg = NULL;
1316 pull_utf8_talloc(frame, &msg, attr->values[0].string.text);
1317 fstrcpy(status->message, msg);
1318 }
1319
1320 /*
1321 * Return the job queue...
1322 */
1323
1324 *q = queue;
1325
1326 out:
1327 if (response)
1328 ippDelete(response);
1329
1330 if (language)
1331 cupsLangFree(language);
1332
1333 if (http)
1334 httpClose(http);
1335
1336 TALLOC_FREE(frame);
1337 return qcount;
1338 }
1339
1340
1341 /*
1342 * 'cups_queue_pause()' - Pause a print queue.
1343 */
1344
1345 static int cups_queue_pause(int snum)
1346 {
1347 TALLOC_CTX *frame = talloc_stackframe();
1348 int ret = 1; /* Return value */
1349 http_t *http = NULL; /* HTTP connection to server */
1350 ipp_t *request = NULL, /* IPP Request */
1351 *response = NULL; /* IPP Response */
1352 cups_lang_t *language = NULL; /* Default language */
1353 char *printername = NULL;
1354 char *username = NULL;
1355 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
1356
1357
1358 DEBUG(5,("cups_queue_pause(%d)\n", snum));
1359
1360 /*
1361 * Make sure we don't ask for passwords...
1362 */
1363
1364 cupsSetPasswordCB(cups_passwd_cb);
1365
1366 /*
1367 * Try to connect to the server...
1368 */
1369
1370 if ((http = cups_connect(frame)) == NULL) {
1371 goto out;
1372 }
1373
1374 /*
1375 * Build an IPP_PAUSE_PRINTER request, which requires the following
1376 * attributes:
1377 *
1378 * attributes-charset
1379 * attributes-natural-language
1380 * printer-uri
1381 * requesting-user-name
1382 */
1383
1384 request = ippNew();
1385
1386 request->request.op.operation_id = IPP_PAUSE_PRINTER;
1387 request->request.op.request_id = 1;
1388
1389 language = cupsLangDefault();
1390
1391 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1392 "attributes-charset", NULL, "utf-8");
1393
1394 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1395 "attributes-natural-language", NULL, language->language);
1396
1397 if (push_utf8_talloc(frame, &printername, PRINTERNAME(snum)) == (size_t)-1) {
1398 goto out;
1399 }
1400 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1401 printername);
1402
1403 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1404
1405 if (push_utf8_talloc(frame, &username, current_user_info.unix_name) == (size_t)-1) {
1406 goto out;
1407 }
1408 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1409 NULL, username);
1410
1411 /*
1412 * Do the request and get back a response...
1413 */
1414
1415 if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) {
1416 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1417 DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1418 ippErrorString(cupsLastError())));
1419 } else {
1420 ret = 0;
1421 }
1422 } else {
1423 DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1424 ippErrorString(cupsLastError())));
1425 }
1426
1427 out:
1428 if (response)
1429 ippDelete(response);
1430
1431 if (language)
1432 cupsLangFree(language);
1433
1434 if (http)
1435 httpClose(http);
1436
1437 TALLOC_FREE(frame);
1438 return ret;
1439 }
1440
1441
1442 /*
1443 * 'cups_queue_resume()' - Restart a print queue.
1444 */
1445
1446 static int cups_queue_resume(int snum)
1447 {
1448 TALLOC_CTX *frame = talloc_stackframe();
1449 int ret = 1; /* Return value */
1450 http_t *http = NULL; /* HTTP connection to server */
1451 ipp_t *request = NULL, /* IPP Request */
1452 *response = NULL; /* IPP Response */
1453 cups_lang_t *language = NULL; /* Default language */
1454 char *printername = NULL;
1455 char *username = NULL;
1456 char uri[HTTP_MAX_URI]; /* printer-uri attribute */
1457
1458
1459 DEBUG(5,("cups_queue_resume(%d)\n", snum));
1460
1461 /*
1462 * Make sure we don't ask for passwords...
1463 */
1464
1465 cupsSetPasswordCB(cups_passwd_cb);
1466
1467 /*
1468 * Try to connect to the server...
1469 */
1470
1471 if ((http = cups_connect(frame)) == NULL) {
1472 goto out;
1473 }
1474
1475 /*
1476 * Build an IPP_RESUME_PRINTER request, which requires the following
1477 * attributes:
1478 *
1479 * attributes-charset
1480 * attributes-natural-language
1481 * printer-uri
1482 * requesting-user-name
1483 */
1484
1485 request = ippNew();
1486
1487 request->request.op.operation_id = IPP_RESUME_PRINTER;
1488 request->request.op.request_id = 1;
1489
1490 language = cupsLangDefault();
1491
1492 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1493 "attributes-charset", NULL, "utf-8");
1494
1495 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1496 "attributes-natural-language", NULL, language->language);
1497
1498 if (push_utf8_talloc(frame, &printername, PRINTERNAME(snum)) == (size_t)-1) {
1499 goto out;
1500 }
1501 slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1502 printername);
1503
1504 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1505
1506 if (push_utf8_talloc(frame, &username, current_user_info.unix_name) == (size_t)-1) {
1507 goto out;
1508 }
1509 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1510 NULL, username);
1511
1512 /*
1513 * Do the request and get back a response...
1514 */
1515
1516 if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) {
1517 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1518 DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1519 ippErrorString(cupsLastError())));
1520 } else {
1521 ret = 0;
1522 }
1523 } else {
1524 DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1525 ippErrorString(cupsLastError())));
1526 }
1527
1528 out:
1529 if (response)
1530 ippDelete(response);
1531
1532 if (language)
1533 cupsLangFree(language);
1534
1535 if (http)
1536 httpClose(http);
1537
1538 TALLOC_FREE(frame);
1539 return ret;
1540 }
1541
1542 /*******************************************************************
1543 * CUPS printing interface definitions...
1544 ******************************************************************/
1545
1546 struct printif cups_printif =
1547 {
1548 PRINT_CUPS,
1549 cups_queue_get,
1550 cups_queue_pause,
1551 cups_queue_resume,
1552 cups_job_delete,
1553 cups_job_pause,
1554 cups_job_resume,
1555 cups_job_submit,
1556 };
1557
1558 bool cups_pull_comment_location(NT_PRINTER_INFO_LEVEL_2 *printer)
1559 {
1560 TALLOC_CTX *frame = talloc_stackframe();
1561 http_t *http = NULL; /* HTTP connection to server */
1562 ipp_t *request = NULL, /* IPP Request */
1563 *response = NULL; /* IPP Response */
1564 ipp_attribute_t *attr; /* Current attribute */
1565 cups_lang_t *language = NULL; /* Default language */
1566 char uri[HTTP_MAX_URI];
1567 char *server = NULL;
1568 char *sharename = NULL;
1569 char *name = NULL;
1570 static const char *requested[] =/* Requested attributes */
1571 {
1572 "printer-name",
1573 "printer-info",
1574 "printer-location"
1575 };
1576 bool ret = False;
1577
1578 DEBUG(5, ("pulling %s location\n", printer->sharename));
1579
1580 /*
1581 * Make sure we don't ask for passwords...
1582 */
1583
1584 cupsSetPasswordCB(cups_passwd_cb);
1585
1586 /*
1587 * Try to connect to the server...
1588 */
1589
1590 if ((http = cups_connect(frame)) == NULL) {
1591 goto out;
1592 }
1593
1594 request = ippNew();
1595
1596 request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1597 request->request.op.request_id = 1;
1598
1599 language = cupsLangDefault();
1600
1601 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1602 "attributes-charset", NULL, "utf-8");
1603
1604 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1605 "attributes-natural-language", NULL, language->language);
1606
1607 if (lp_cups_server() != NULL && strlen(lp_cups_server()) > 0) {
1608 if (push_utf8_talloc(frame, &server, lp_cups_server()) == (size_t)-1) {
1609 goto out;
1610 }
1611 } else {
1612 server = talloc_strdup(frame,cupsServer());
1613 }
1614 if (server) {
1615 goto out;
1616 }
1617 if (push_utf8_talloc(frame, &sharename, printer->sharename) == (size_t)-1) {
1618 goto out;
1619 }
1620 slprintf(uri, sizeof(uri) - 1, "ipp://%s/printers/%s",
1621 server, sharename);
1622
1623 ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1624 "printer-uri", NULL, uri);
1625
1626 ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1627 "requested-attributes",
1628 (sizeof(requested) / sizeof(requested[0])),
1629 NULL, requested);
1630
1631 /*
1632 * Do the request and get back a response...
1633 */
1634
1635 if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1636 DEBUG(0,("Unable to get printer attributes - %s\n",
1637 ippErrorString(cupsLastError())));
1638 goto out;
1639 }
1640
1641 for (attr = response->attrs; attr != NULL;) {
1642 /*
1643 * Skip leading attributes until we hit a printer...
1644 */
1645
1646 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
1647 attr = attr->next;
1648
1649 if (attr == NULL)
1650 break;
1651
1652 /*
1653 * Pull the needed attributes from this printer...
1654 */
1655
1656 while ( attr && (attr->group_tag == IPP_TAG_PRINTER) ) {
1657 if (strcmp(attr->name, "printer-name") == 0 &&
1658 attr->value_tag == IPP_TAG_NAME) {
1659 pull_utf8_talloc(frame,
1660 &name,
1661 attr->values[0].string.text);
1662 }
1663
1664 /* Grab the comment if we don't have one */
1665 if ( (strcmp(attr->name, "printer-info") == 0)
1666 && (attr->value_tag == IPP_TAG_TEXT)
1667 && !strlen(printer->comment) )
1668 {
1669 char *comment = NULL;
1670 pull_utf8_talloc(frame,
1671 &comment,
1672 attr->values[0].string.text);
1673 DEBUG(5,("cups_pull_comment_location: Using cups comment: %s\n",
1674 comment));
1675 strlcpy(printer->comment,
1676 comment,
1677 sizeof(printer->comment));
1678 }
1679
1680 /* Grab the location if we don't have one */
1681 if ( (strcmp(attr->name, "printer-location") == 0)
1682 && (attr->value_tag == IPP_TAG_TEXT)
1683 && !strlen(printer->location) )
1684 {
1685 char *location = NULL;
1686 pull_utf8_talloc(frame,
1687 &location,
1688 attr->values[0].string.text);
1689 DEBUG(5,("cups_pull_comment_location: Using cups location: %s\n",
1690 location));
1691 strlcpy(printer->location,
1692 location,
1693 sizeof(printer->location));
1694 }
1695
1696 attr = attr->next;
1697 }
1698
1699 /*
1700 * We have everything needed...
1701 */
1702
1703 if (name != NULL)
1704 break;
1705 }
1706
1707 ret = True;
1708
1709 out:
1710 if (response)
1711 ippDelete(response);
1712
1713 if (language)
1714 cupsLangFree(language);
1715
1716 if (http)
1717 httpClose(http);
1718
1719 TALLOC_FREE(frame);
1720 return ret;
1721 }
1722
1723 #else
1724 /* this keeps fussy compilers happy */
1725 void print_cups_dummy(void);
1726 void print_cups_dummy(void) {}
1727 #endif /* HAVE_CUPS */
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