1 /***
2 This file is part of avahi.
3
4 avahi is free software; you can redistribute it and/or modify it
5 under the terms of the GNU Lesser General Public License as
6 published by the Free Software Foundation; either version 2.1 of the
7 License, or (at your option) any later version.
8
9 avahi is distributed in the hope that it will be useful, but WITHOUT
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
12 Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with avahi; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
17 USA.
18 ***/
19
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23
24 #include <stdlib.h>
25 #include <stdio.h>
26 #include <string.h>
27
28 #include <dbus/dbus.h>
29
30 #include <avahi-client/client.h>
31 #include <avahi-common/dbus.h>
32 #include <avahi-common/llist.h>
33 #include <avahi-common/error.h>
34 #include <avahi-common/malloc.h>
35 #include <avahi-common/domain.h>
36
37 #include "client.h"
38 #include "internal.h"
39 #include "xdg-config.h"
40
parse_environment(AvahiDomainBrowser * b)41 static void parse_environment(AvahiDomainBrowser *b) {
42 char buf[AVAHI_DOMAIN_NAME_MAX*3], *e, *t, *p;
43
44 assert(b);
45
46 if (!(e = getenv("AVAHI_BROWSE_DOMAINS")))
47 return;
48
49 snprintf(buf, sizeof(buf), "%s", e);
50
51 for (t = strtok_r(buf, ":", &p); t; t = strtok_r(NULL, ":", &p)) {
52 char domain[AVAHI_DOMAIN_NAME_MAX];
53 if (avahi_normalize_name(t, domain, sizeof(domain)))
54 b->static_browse_domains = avahi_string_list_add(b->static_browse_domains, domain);
55 }
56 }
57
parse_domain_file(AvahiDomainBrowser * b)58 static void parse_domain_file(AvahiDomainBrowser *b) {
59 FILE *f;
60 char buf[AVAHI_DOMAIN_NAME_MAX];
61
62 assert(b);
63
64 if (!(f = avahi_xdg_config_open("avahi/browse-domains")))
65 return;
66
67
68 while (fgets(buf, sizeof(buf)-1, f)) {
69 char domain[AVAHI_DOMAIN_NAME_MAX];
70 buf[strcspn(buf, "\n\r")] = 0;
71
72 if (avahi_normalize_name(buf, domain, sizeof(domain)))
73 b->static_browse_domains = avahi_string_list_add(b->static_browse_domains, domain);
74 }
75 }
76
domain_browser_ref(AvahiDomainBrowser * db)77 static void domain_browser_ref(AvahiDomainBrowser *db) {
78 assert(db);
79 assert(db->ref >= 1);
80 db->ref++;
81 }
82
defer_timeout_callback(AvahiTimeout * t,void * userdata)83 static void defer_timeout_callback(AvahiTimeout *t, void *userdata) {
84 AvahiDomainBrowser *db = userdata;
85 AvahiStringList *l;
86 assert(t);
87
88 db->client->poll_api->timeout_free(db->defer_timeout);
89 db->defer_timeout = NULL;
90
91 domain_browser_ref(db);
92
93 for (l = db->static_browse_domains; l; l = l->next) {
94
95 if (db->ref <= 1)
96 break;
97
98 db->callback(db, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AVAHI_BROWSER_NEW, (char*) l->text, AVAHI_LOOKUP_RESULT_STATIC, db->userdata);
99 }
100
101 avahi_domain_browser_free(db);
102 }
103
avahi_domain_browser_new(AvahiClient * client,AvahiIfIndex interface,AvahiProtocol protocol,const char * domain,AvahiDomainBrowserType btype,AvahiLookupFlags flags,AvahiDomainBrowserCallback callback,void * userdata)104 AvahiDomainBrowser* avahi_domain_browser_new(
105 AvahiClient *client,
106 AvahiIfIndex interface,
107 AvahiProtocol protocol,
108 const char *domain,
109 AvahiDomainBrowserType btype,
110 AvahiLookupFlags flags,
111 AvahiDomainBrowserCallback callback,
112 void *userdata) {
113
114 AvahiDomainBrowser *db = NULL;
115 DBusMessage *message = NULL, *reply = NULL;
116 DBusError error;
117 char *path;
118 int32_t i_interface, i_protocol, bt;
119 uint32_t u_flags;
120
121 assert(client);
122 assert(callback);
123
124 dbus_error_init (&error);
125
126 if (!avahi_client_is_connected(client)) {
127 avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
128 goto fail;
129 }
130
131 if (!domain)
132 domain = "";
133
134 if (!(db = avahi_new (AvahiDomainBrowser, 1))) {
135 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
136 goto fail;
137 }
138
139 db->ref = 1;
140 db->client = client;
141 db->callback = callback;
142 db->userdata = userdata;
143 db->path = NULL;
144 db->interface = interface;
145 db->protocol = protocol;
146 db->static_browse_domains = NULL;
147 db->defer_timeout = NULL;
148
149 AVAHI_LLIST_PREPEND(AvahiDomainBrowser, domain_browsers, client->domain_browsers, db);
150
151 if (!(client->flags & AVAHI_CLIENT_IGNORE_USER_CONFIG)) {
152 parse_environment(db);
153 parse_domain_file(db);
154 }
155
156 db->static_browse_domains = avahi_string_list_reverse(db->static_browse_domains);
157
158 if (!(message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "DomainBrowserNew"))) {
159 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
160 goto fail;
161 }
162
163 i_interface = (int32_t) interface;
164 i_protocol = (int32_t) protocol;
165 u_flags = (uint32_t) flags;
166 bt = btype;
167
168 if (!(dbus_message_append_args(
169 message,
170 DBUS_TYPE_INT32, &i_interface,
171 DBUS_TYPE_INT32, &i_protocol,
172 DBUS_TYPE_STRING, &domain,
173 DBUS_TYPE_INT32, &bt,
174 DBUS_TYPE_UINT32, &u_flags,
175 DBUS_TYPE_INVALID))) {
176 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
177 goto fail;
178 }
179
180 if (!(reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error)) ||
181 dbus_error_is_set(&error)) {
182 avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
183 goto fail;
184 }
185
186 if (!dbus_message_get_args (reply, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID) ||
187 dbus_error_is_set(&error) ||
188 !path) {
189 avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
190 goto fail;
191 }
192
193 if (!(db->path = avahi_strdup(path))) {
194
195 /* FIXME: We don't remove the object on the server side */
196
197 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
198 goto fail;
199 }
200
201 if (db->static_browse_domains && btype == AVAHI_DOMAIN_BROWSER_BROWSE) {
202 struct timeval tv = { 0, 0 };
203
204 if (!(db->defer_timeout = client->poll_api->timeout_new(client->poll_api, &tv, defer_timeout_callback, db))) {
205 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
206 goto fail;
207 }
208 }
209
210 dbus_message_unref(message);
211 dbus_message_unref(reply);
212
213 return db;
214
215 fail:
216
217 if (dbus_error_is_set(&error)) {
218 avahi_client_set_dbus_error(client, &error);
219 dbus_error_free(&error);
220 }
221
222 if (db)
223 avahi_domain_browser_free(db);
224
225 if (message)
226 dbus_message_unref(message);
227
228 if (reply)
229 dbus_message_unref(reply);
230
231 return NULL;
232 }
233
avahi_domain_browser_get_client(AvahiDomainBrowser * b)234 AvahiClient* avahi_domain_browser_get_client (AvahiDomainBrowser *b) {
235 assert(b);
236 return b->client;
237 }
238
avahi_domain_browser_free(AvahiDomainBrowser * b)239 int avahi_domain_browser_free (AvahiDomainBrowser *b) {
240 AvahiClient *client;
241 int r = AVAHI_OK;
242
243 assert(b);
244 assert(b->ref >= 1);
245
246 if (--(b->ref) >= 1)
247 return AVAHI_OK;
248
249 client = b->client;
250
251 if (b->path && avahi_client_is_connected(b->client))
252 r = avahi_client_simple_method_call(client, b->path, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "Free");
253
254 AVAHI_LLIST_REMOVE(AvahiDomainBrowser, domain_browsers, client->domain_browsers, b);
255
256 if (b->defer_timeout)
257 b->client->poll_api->timeout_free(b->defer_timeout);
258
259 avahi_string_list_free(b->static_browse_domains);
260 avahi_free(b->path);
261 avahi_free(b);
262
263 return r;
264 }
265
avahi_domain_browser_event(AvahiClient * client,AvahiBrowserEvent event,DBusMessage * message)266 DBusHandlerResult avahi_domain_browser_event (AvahiClient *client, AvahiBrowserEvent event, DBusMessage *message) {
267 AvahiDomainBrowser *db = NULL;
268 DBusError error;
269 const char *path;
270 char *domain = NULL;
271 int32_t interface, protocol;
272 uint32_t flags = 0;
273 AvahiStringList *l;
274
275 assert(client);
276 assert(message);
277
278 dbus_error_init (&error);
279
280 if (!(path = dbus_message_get_path(message)))
281 goto fail;
282
283 for (db = client->domain_browsers; db; db = db->domain_browsers_next)
284 if (strcmp (db->path, path) == 0)
285 break;
286
287 if (!db)
288 goto fail;
289
290 interface = db->interface;
291 protocol = db->protocol;
292
293 switch (event) {
294 case AVAHI_BROWSER_NEW:
295 case AVAHI_BROWSER_REMOVE:
296
297 if (!dbus_message_get_args(
298 message, &error,
299 DBUS_TYPE_INT32, &interface,
300 DBUS_TYPE_INT32, &protocol,
301 DBUS_TYPE_STRING, &domain,
302 DBUS_TYPE_UINT32, &flags,
303 DBUS_TYPE_INVALID) ||
304 dbus_error_is_set (&error)) {
305 fprintf(stderr, "Failed to parse browser event.\n");
306 goto fail;
307 }
308
309 break;
310
311 case AVAHI_BROWSER_CACHE_EXHAUSTED:
312 case AVAHI_BROWSER_ALL_FOR_NOW:
313 break;
314
315 case AVAHI_BROWSER_FAILURE: {
316 char *etxt;
317
318 if (!dbus_message_get_args(
319 message, &error,
320 DBUS_TYPE_STRING, &etxt,
321 DBUS_TYPE_INVALID) ||
322 dbus_error_is_set (&error)) {
323 fprintf(stderr, "Failed to parse browser event.\n");
324 goto fail;
325 }
326
327 avahi_client_set_errno(db->client, avahi_error_dbus_to_number(etxt));
328 break;
329 }
330 }
331
332 if (domain)
333 for (l = db->static_browse_domains; l; l = l->next)
334 if (avahi_domain_equal((char*) l->text, domain)) {
335 /* We had this entry already in the static entries */
336 return DBUS_HANDLER_RESULT_HANDLED;
337 }
338
339 db->callback(db, (AvahiIfIndex) interface, (AvahiProtocol) protocol, event, domain, (AvahiLookupResultFlags) flags, db->userdata);
340
341 return DBUS_HANDLER_RESULT_HANDLED;
342
343 fail:
344 dbus_error_free (&error);
345 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
346 }
347
348 /* AvahiServiceTypeBrowser */
349
avahi_service_type_browser_new(AvahiClient * client,AvahiIfIndex interface,AvahiProtocol protocol,const char * domain,AvahiLookupFlags flags,AvahiServiceTypeBrowserCallback callback,void * userdata)350 AvahiServiceTypeBrowser* avahi_service_type_browser_new(
351 AvahiClient *client,
352 AvahiIfIndex interface,
353 AvahiProtocol protocol,
354 const char *domain,
355 AvahiLookupFlags flags,
356 AvahiServiceTypeBrowserCallback callback,
357 void *userdata) {
358
359 AvahiServiceTypeBrowser *b = NULL;
360 DBusMessage *message = NULL, *reply = NULL;
361 DBusError error;
362 char *path;
363 int32_t i_interface, i_protocol;
364 uint32_t u_flags;
365
366 assert(client);
367 assert(callback);
368
369 dbus_error_init(&error);
370
371 if (!avahi_client_is_connected(client)) {
372 avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
373 goto fail;
374 }
375
376 if (!domain)
377 domain = "";
378
379 if (!(b = avahi_new(AvahiServiceTypeBrowser, 1))) {
380 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
381 goto fail;
382 }
383
384 b->client = client;
385 b->callback = callback;
386 b->userdata = userdata;
387 b->path = NULL;
388 b->domain = NULL;
389 b->interface = interface;
390 b->protocol = protocol;
391
392 AVAHI_LLIST_PREPEND(AvahiServiceTypeBrowser, service_type_browsers, client->service_type_browsers, b);
393
394 if (domain[0])
395 if (!(b->domain = avahi_strdup(domain))) {
396 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
397 goto fail;
398 }
399
400 if (!(message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "ServiceTypeBrowserNew"))) {
401 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
402 goto fail;
403 }
404
405 i_interface = (int32_t) interface;
406 i_protocol = (int32_t) protocol;
407 u_flags = (uint32_t) flags;
408
409 if (!dbus_message_append_args(
410 message,
411 DBUS_TYPE_INT32, &i_interface,
412 DBUS_TYPE_INT32, &i_protocol,
413 DBUS_TYPE_STRING, &domain,
414 DBUS_TYPE_UINT32, &u_flags,
415 DBUS_TYPE_INVALID)) {
416 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
417 goto fail;
418 }
419
420 if (!(reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error)) ||
421 dbus_error_is_set(&error)) {
422 avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
423 goto fail;
424 }
425
426 if (!dbus_message_get_args (reply, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID) ||
427 dbus_error_is_set(&error) ||
428 !path) {
429 avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
430 goto fail;
431 }
432
433 if (!(b->path = avahi_strdup(path))) {
434
435 /* FIXME: We don't remove the object on the server side */
436
437 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
438 goto fail;
439 }
440
441 dbus_message_unref(message);
442 dbus_message_unref(reply);
443
444 return b;
445
446 fail:
447
448 if (dbus_error_is_set(&error)) {
449 avahi_client_set_dbus_error(client, &error);
450 dbus_error_free(&error);
451 }
452
453 if (b)
454 avahi_service_type_browser_free(b);
455
456 if (message)
457 dbus_message_unref(message);
458
459 if (reply)
460 dbus_message_unref(reply);
461
462 return NULL;
463 }
464
avahi_service_type_browser_get_client(AvahiServiceTypeBrowser * b)465 AvahiClient* avahi_service_type_browser_get_client (AvahiServiceTypeBrowser *b) {
466 assert(b);
467 return b->client;
468 }
469
avahi_service_type_browser_free(AvahiServiceTypeBrowser * b)470 int avahi_service_type_browser_free (AvahiServiceTypeBrowser *b) {
471 AvahiClient *client;
472 int r = AVAHI_OK;
473
474 assert(b);
475 client = b->client;
476
477 if (b->path && avahi_client_is_connected(b->client))
478 r = avahi_client_simple_method_call(client, b->path, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "Free");
479
480 AVAHI_LLIST_REMOVE(AvahiServiceTypeBrowser, service_type_browsers, b->client->service_type_browsers, b);
481
482 avahi_free(b->path);
483 avahi_free(b->domain);
484 avahi_free(b);
485 return r;
486 }
487
avahi_service_type_browser_event(AvahiClient * client,AvahiBrowserEvent event,DBusMessage * message)488 DBusHandlerResult avahi_service_type_browser_event (AvahiClient *client, AvahiBrowserEvent event, DBusMessage *message) {
489 AvahiServiceTypeBrowser *b = NULL;
490 DBusError error;
491 const char *path;
492 char *domain, *type = NULL;
493 int32_t interface, protocol;
494 uint32_t flags = 0;
495
496 assert(client);
497 assert(message);
498
499 dbus_error_init (&error);
500
501 if (!(path = dbus_message_get_path(message)))
502 goto fail;
503
504 for (b = client->service_type_browsers; b; b = b->service_type_browsers_next)
505 if (strcmp (b->path, path) == 0)
506 break;
507
508 if (!b)
509 goto fail;
510
511 domain = b->domain;
512 interface = b->interface;
513 protocol = b->protocol;
514
515 switch (event) {
516 case AVAHI_BROWSER_NEW:
517 case AVAHI_BROWSER_REMOVE:
518 if (!dbus_message_get_args(
519 message, &error,
520 DBUS_TYPE_INT32, &interface,
521 DBUS_TYPE_INT32, &protocol,
522 DBUS_TYPE_STRING, &type,
523 DBUS_TYPE_STRING, &domain,
524 DBUS_TYPE_UINT32, &flags,
525 DBUS_TYPE_INVALID) ||
526 dbus_error_is_set(&error)) {
527 fprintf(stderr, "Failed to parse browser event.\n");
528 goto fail;
529 }
530 break;
531
532 case AVAHI_BROWSER_CACHE_EXHAUSTED:
533 case AVAHI_BROWSER_ALL_FOR_NOW:
534 break;
535
536 case AVAHI_BROWSER_FAILURE: {
537 char *etxt;
538
539 if (!dbus_message_get_args(
540 message, &error,
541 DBUS_TYPE_STRING, &etxt,
542 DBUS_TYPE_INVALID) ||
543 dbus_error_is_set (&error)) {
544 fprintf(stderr, "Failed to parse browser event.\n");
545 goto fail;
546 }
547
548 avahi_client_set_errno(b->client, avahi_error_dbus_to_number(etxt));
549 break;
550 }
551 }
552
553 b->callback(b, (AvahiIfIndex) interface, (AvahiProtocol) protocol, event, type, domain, (AvahiLookupResultFlags) flags, b->userdata);
554
555 return DBUS_HANDLER_RESULT_HANDLED;
556
557 fail:
558 dbus_error_free (&error);
559 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
560 }
561
562 /* AvahiServiceBrowser */
563
avahi_service_browser_new(AvahiClient * client,AvahiIfIndex interface,AvahiProtocol protocol,const char * type,const char * domain,AvahiLookupFlags flags,AvahiServiceBrowserCallback callback,void * userdata)564 AvahiServiceBrowser* avahi_service_browser_new(
565 AvahiClient *client,
566 AvahiIfIndex interface,
567 AvahiProtocol protocol,
568 const char *type,
569 const char *domain,
570 AvahiLookupFlags flags,
571 AvahiServiceBrowserCallback callback,
572 void *userdata) {
573
574 AvahiServiceBrowser *b = NULL;
575 DBusMessage *message = NULL, *reply = NULL;
576 DBusError error;
577 char *path;
578 int32_t i_protocol, i_interface;
579 uint32_t u_flags;
580
581 assert(client);
582 assert(type);
583 assert(callback);
584
585 dbus_error_init(&error);
586
587 if (!avahi_client_is_connected(client)) {
588 avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
589 goto fail;
590 }
591
592 if (!domain)
593 domain = "";
594
595 if (!(b = avahi_new(AvahiServiceBrowser, 1))) {
596 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
597 goto fail;
598 }
599
600 b->client = client;
601 b->callback = callback;
602 b->userdata = userdata;
603 b->path = NULL;
604 b->type = b->domain = NULL;
605 b->interface = interface;
606 b->protocol = protocol;
607
608 AVAHI_LLIST_PREPEND(AvahiServiceBrowser, service_browsers, client->service_browsers, b);
609
610 if (!(b->type = avahi_strdup(type))) {
611 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
612 goto fail;
613 }
614
615 if (domain && domain[0])
616 if (!(b->domain = avahi_strdup(domain))) {
617 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
618 goto fail;
619 }
620
621 if (!(message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "ServiceBrowserNew"))) {
622 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
623 goto fail;
624 }
625
626 i_interface = (int32_t) interface;
627 i_protocol = (int32_t) protocol;
628 u_flags = (uint32_t) flags;
629
630 if (!dbus_message_append_args(
631 message,
632 DBUS_TYPE_INT32, &i_interface,
633 DBUS_TYPE_INT32, &i_protocol,
634 DBUS_TYPE_STRING, &type,
635 DBUS_TYPE_STRING, &domain,
636 DBUS_TYPE_UINT32, &u_flags,
637 DBUS_TYPE_INVALID)) {
638 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
639 goto fail;
640 }
641
642 if (!(reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error)) ||
643 dbus_error_is_set(&error)) {
644 avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
645 goto fail;
646 }
647
648 if (!dbus_message_get_args (reply, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID) ||
649 dbus_error_is_set(&error) ||
650 !path) {
651 avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
652 goto fail;
653 }
654
655 if (!(b->path = avahi_strdup(path))) {
656
657 /* FIXME: We don't remove the object on the server side */
658
659 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
660 goto fail;
661 }
662
663 dbus_message_unref(message);
664 dbus_message_unref(reply);
665
666 return b;
667
668 fail:
669 if (dbus_error_is_set(&error)) {
670 avahi_client_set_dbus_error(client, &error);
671 dbus_error_free(&error);
672 }
673
674 if (b)
675 avahi_service_browser_free(b);
676
677 if (message)
678 dbus_message_unref(message);
679
680 if (reply)
681 dbus_message_unref(reply);
682
683 return NULL;
684 }
685
avahi_service_browser_get_client(AvahiServiceBrowser * b)686 AvahiClient* avahi_service_browser_get_client (AvahiServiceBrowser *b) {
687 assert(b);
688 return b->client;
689 }
690
avahi_service_browser_free(AvahiServiceBrowser * b)691 int avahi_service_browser_free (AvahiServiceBrowser *b) {
692 AvahiClient *client;
693 int r = AVAHI_OK;
694
695 assert(b);
696 client = b->client;
697
698 if (b->path && avahi_client_is_connected(b->client))
699 r = avahi_client_simple_method_call(client, b->path, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "Free");
700
701 AVAHI_LLIST_REMOVE(AvahiServiceBrowser, service_browsers, b->client->service_browsers, b);
702
703 avahi_free(b->path);
704 avahi_free(b->type);
705 avahi_free(b->domain);
706 avahi_free(b);
707 return r;
708 }
709
avahi_service_browser_event(AvahiClient * client,AvahiBrowserEvent event,DBusMessage * message)710 DBusHandlerResult avahi_service_browser_event(AvahiClient *client, AvahiBrowserEvent event, DBusMessage *message) {
711 AvahiServiceBrowser *b = NULL;
712 DBusError error;
713 const char *path;
714 char *name = NULL, *type, *domain;
715 int32_t interface, protocol;
716 uint32_t flags = 0;
717
718 dbus_error_init (&error);
719
720 if (!(path = dbus_message_get_path(message)))
721 goto fail;
722
723 for (b = client->service_browsers; b; b = b->service_browsers_next)
724 if (strcmp (b->path, path) == 0)
725 break;
726
727 if (!b)
728 goto fail;
729
730 type = b->type;
731 domain = b->domain;
732 interface = b->interface;
733 protocol = b->protocol;
734
735 switch (event) {
736 case AVAHI_BROWSER_NEW:
737 case AVAHI_BROWSER_REMOVE:
738
739 if (!dbus_message_get_args (
740 message, &error,
741 DBUS_TYPE_INT32, &interface,
742 DBUS_TYPE_INT32, &protocol,
743 DBUS_TYPE_STRING, &name,
744 DBUS_TYPE_STRING, &type,
745 DBUS_TYPE_STRING, &domain,
746 DBUS_TYPE_UINT32, &flags,
747 DBUS_TYPE_INVALID) ||
748 dbus_error_is_set(&error)) {
749 fprintf(stderr, "Failed to parse browser event.\n");
750 goto fail;
751 }
752 break;
753
754 case AVAHI_BROWSER_CACHE_EXHAUSTED:
755 case AVAHI_BROWSER_ALL_FOR_NOW:
756 break;
757
758 case AVAHI_BROWSER_FAILURE: {
759 char *etxt;
760
761 if (!dbus_message_get_args(
762 message, &error,
763 DBUS_TYPE_STRING, &etxt,
764 DBUS_TYPE_INVALID) ||
765 dbus_error_is_set (&error)) {
766 fprintf(stderr, "Failed to parse browser event.\n");
767 goto fail;
768 }
769
770 avahi_client_set_errno(b->client, avahi_error_dbus_to_number(etxt));
771 break;
772 }
773 }
774
775 b->callback(b, (AvahiIfIndex) interface, (AvahiProtocol) protocol, event, name, type, domain, (AvahiLookupResultFlags) flags, b->userdata);
776
777 return DBUS_HANDLER_RESULT_HANDLED;
778
779 fail:
780 dbus_error_free (&error);
781 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
782 }
783
784 /* AvahiRecordBrowser */
785
avahi_record_browser_new(AvahiClient * client,AvahiIfIndex interface,AvahiProtocol protocol,const char * name,uint16_t clazz,uint16_t type,AvahiLookupFlags flags,AvahiRecordBrowserCallback callback,void * userdata)786 AvahiRecordBrowser* avahi_record_browser_new(
787 AvahiClient *client,
788 AvahiIfIndex interface,
789 AvahiProtocol protocol,
790 const char *name,
791 uint16_t clazz,
792 uint16_t type,
793 AvahiLookupFlags flags,
794 AvahiRecordBrowserCallback callback,
795 void *userdata) {
796
797 AvahiRecordBrowser *b = NULL;
798 DBusMessage *message = NULL, *reply = NULL;
799 DBusError error;
800 char *path;
801 int32_t i_protocol, i_interface;
802 uint32_t u_flags;
803
804 assert(client);
805 assert(name);
806 assert(callback);
807
808 dbus_error_init(&error);
809
810 if (!avahi_client_is_connected(client)) {
811 avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
812 goto fail;
813 }
814
815 if (!(b = avahi_new(AvahiRecordBrowser, 1))) {
816 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
817 goto fail;
818 }
819
820 b->client = client;
821 b->callback = callback;
822 b->userdata = userdata;
823 b->path = NULL;
824 b->name = NULL;
825 b->clazz = clazz;
826 b->type = type;
827 b->interface = interface;
828 b->protocol = protocol;
829
830 AVAHI_LLIST_PREPEND(AvahiRecordBrowser, record_browsers, client->record_browsers, b);
831
832 if (!(b->name = avahi_strdup(name))) {
833 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
834 goto fail;
835 }
836
837 if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "RecordBrowserNew"))) {
838 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
839 goto fail;
840 }
841
842 i_interface = (int32_t) interface;
843 i_protocol = (int32_t) protocol;
844 u_flags = (uint32_t) flags;
845
846 if (!dbus_message_append_args(
847 message,
848 DBUS_TYPE_INT32, &i_interface,
849 DBUS_TYPE_INT32, &i_protocol,
850 DBUS_TYPE_STRING, &name,
851 DBUS_TYPE_UINT16, &clazz,
852 DBUS_TYPE_UINT16, &type,
853 DBUS_TYPE_UINT32, &u_flags,
854 DBUS_TYPE_INVALID)) {
855 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
856 goto fail;
857 }
858
859 if (!(reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error)) ||
860 dbus_error_is_set(&error)) {
861 avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
862 goto fail;
863 }
864
865 if (!dbus_message_get_args (reply, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID) ||
866 dbus_error_is_set(&error) ||
867 !path) {
868 avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
869 goto fail;
870 }
871
872 if (!(b->path = avahi_strdup(path))) {
873
874 /* FIXME: We don't remove the object on the server side */
875
876 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
877 goto fail;
878 }
879
880 dbus_message_unref(message);
881 dbus_message_unref(reply);
882
883 return b;
884
885 fail:
886 if (dbus_error_is_set(&error)) {
887 avahi_client_set_dbus_error(client, &error);
888 dbus_error_free(&error);
889 }
890
891 if (b)
892 avahi_record_browser_free(b);
893
894 if (message)
895 dbus_message_unref(message);
896
897 if (reply)
898 dbus_message_unref(reply);
899
900 return NULL;
901 }
902
avahi_record_browser_get_client(AvahiRecordBrowser * b)903 AvahiClient* avahi_record_browser_get_client (AvahiRecordBrowser *b) {
904 assert(b);
905 return b->client;
906 }
907
avahi_record_browser_free(AvahiRecordBrowser * b)908 int avahi_record_browser_free (AvahiRecordBrowser *b) {
909 AvahiClient *client;
910 int r = AVAHI_OK;
911
912 assert(b);
913 client = b->client;
914
915 if (b->path && avahi_client_is_connected(b->client))
916 r = avahi_client_simple_method_call(client, b->path, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "Free");
917
918 AVAHI_LLIST_REMOVE(AvahiRecordBrowser, record_browsers, b->client->record_browsers, b);
919
920 avahi_free(b->path);
921 avahi_free(b->name);
922 avahi_free(b);
923 return r;
924 }
925
avahi_record_browser_event(AvahiClient * client,AvahiBrowserEvent event,DBusMessage * message)926 DBusHandlerResult avahi_record_browser_event(AvahiClient *client, AvahiBrowserEvent event, DBusMessage *message) {
927 AvahiRecordBrowser *b = NULL;
928 DBusError error;
929 const char *path;
930 char *name;
931 int32_t interface, protocol;
932 uint32_t flags = 0;
933 uint16_t clazz, type;
934 void *rdata = NULL;
935 int rdata_size = 0;
936
937 dbus_error_init (&error);
938
939 if (!(path = dbus_message_get_path(message)))
940 goto fail;
941
942 for (b = client->record_browsers; b; b = b->record_browsers_next)
943 if (strcmp (b->path, path) == 0)
944 break;
945
946 if (!b)
947 goto fail;
948
949 interface = b->interface;
950 protocol = b->protocol;
951 clazz = b->clazz;
952 type = b->type;
953 name = b->name;
954
955 switch (event) {
956 case AVAHI_BROWSER_NEW:
957 case AVAHI_BROWSER_REMOVE: {
958 DBusMessageIter iter, sub;
959 int j;
960
961 if (!dbus_message_get_args (
962 message, &error,
963 DBUS_TYPE_INT32, &interface,
964 DBUS_TYPE_INT32, &protocol,
965 DBUS_TYPE_STRING, &name,
966 DBUS_TYPE_UINT16, &clazz,
967 DBUS_TYPE_UINT16, &type,
968 DBUS_TYPE_INVALID) ||
969 dbus_error_is_set(&error)) {
970 fprintf(stderr, "Failed to parse browser event.\n");
971 goto fail;
972 }
973
974
975 dbus_message_iter_init(message, &iter);
976
977 for (j = 0; j < 5; j++)
978 dbus_message_iter_next(&iter);
979
980 if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
981 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_BYTE)
982 goto fail;
983
984 dbus_message_iter_recurse(&iter, &sub);
985 dbus_message_iter_get_fixed_array(&sub, &rdata, &rdata_size);
986
987 dbus_message_iter_next(&iter);
988
989 if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
990 goto fail;
991
992 dbus_message_iter_get_basic(&iter, &flags);
993
994 break;
995 }
996
997 case AVAHI_BROWSER_CACHE_EXHAUSTED:
998 case AVAHI_BROWSER_ALL_FOR_NOW:
999 break;
1000
1001 case AVAHI_BROWSER_FAILURE: {
1002 char *etxt;
1003
1004 if (!dbus_message_get_args(
1005 message, &error,
1006 DBUS_TYPE_STRING, &etxt,
1007 DBUS_TYPE_INVALID) ||
1008 dbus_error_is_set (&error)) {
1009 fprintf(stderr, "Failed to parse browser event.\n");
1010 goto fail;
1011 }
1012
1013 avahi_client_set_errno(b->client, avahi_error_dbus_to_number(etxt));
1014 break;
1015 }
1016 }
1017
1018 b->callback(b, (AvahiIfIndex) interface, (AvahiProtocol) protocol, event, name, clazz, type, rdata, (size_t) rdata_size, (AvahiLookupResultFlags) flags, b->userdata);
1019
1020 return DBUS_HANDLER_RESULT_HANDLED;
1021
1022 fail:
1023 dbus_error_free (&error);
1024 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1025 }
1026