4 This file is part of avahi.
6 avahi is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
11 avahi is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
14 Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with avahi; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30 #include <dbus/dbus.h>
32 #include <avahi-common/dbus.h>
33 #include <avahi-common/llist.h>
34 #include <avahi-common/error.h>
35 #include <avahi-common/dbus.h>
36 #include <avahi-common/malloc.h>
37 #include <avahi-common/dbus-watch-glue.h>
38 #include <avahi-common/i18n.h>
43 #define AVAHI_CLIENT_DBUS_API_SUPPORTED ((uint32_t) 0x0201)
45 static int init_server(AvahiClient *client, int *ret_error);
47 int avahi_client_set_errno (AvahiClient *client, int error) {
50 return client->error = error;
53 int avahi_client_set_dbus_error(AvahiClient *client, DBusError *error) {
57 return avahi_client_set_errno(client, avahi_error_dbus_to_number(error->name));
60 static void client_set_state (AvahiClient *client, AvahiServerState state) {
63 if (client->state == state)
66 client->state = state;
68 switch (client->state) {
69 case AVAHI_CLIENT_FAILURE:
71 #ifdef HAVE_DBUS_CONNECTION_CLOSE
72 dbus_connection_close(client->bus);
74 dbus_connection_disconnect(client->bus);
76 dbus_connection_unref(client->bus);
82 case AVAHI_CLIENT_S_COLLISION:
83 case AVAHI_CLIENT_S_REGISTERING:
85 /* Clear cached strings */
86 avahi_free(client->host_name);
87 avahi_free(client->host_name_fqdn);
88 avahi_free(client->domain_name);
90 client->host_name = NULL;
91 client->host_name_fqdn = NULL;
92 client->domain_name = NULL;
95 case AVAHI_CLIENT_S_RUNNING:
96 case AVAHI_CLIENT_CONNECTING:
101 if (client->callback)
102 client->callback (client, state, client->userdata);
105 static DBusHandlerResult filter_func(DBusConnection *bus, DBusMessage *message, void *userdata) {
106 AvahiClient *client = userdata;
112 dbus_error_init(&error);
114 /* fprintf(stderr, "dbus: interface=%s, path=%s, member=%s\n", */
115 /* dbus_message_get_interface (message), */
116 /* dbus_message_get_path (message), */
117 /* dbus_message_get_member (message)); */
119 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
121 /* The DBUS server died or kicked us */
122 avahi_client_set_errno(client, AVAHI_ERR_DISCONNECTED);
125 } else if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameAcquired")) {
127 /* Ignore this message */
129 } else if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
130 char *name, *old, *new;
132 if (!dbus_message_get_args(
134 DBUS_TYPE_STRING, &name,
135 DBUS_TYPE_STRING, &old,
136 DBUS_TYPE_STRING, &new,
137 DBUS_TYPE_INVALID) || dbus_error_is_set(&error)) {
139 fprintf(stderr, "WARNING: Failed to parse NameOwnerChanged signal: %s\n", error.message);
140 avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
144 if (strcmp(name, AVAHI_DBUS_NAME) == 0) {
146 if (avahi_client_is_connected(client)) {
148 /* Regardless if the server lost or acquired its name or
149 * if the name was transfered: our services are no longer
150 * available, so we disconnect ourselves */
151 avahi_client_set_errno(client, AVAHI_ERR_DISCONNECTED);
154 } else if (client->state == AVAHI_CLIENT_CONNECTING && (!old || *old == 0)) {
157 /* Server appeared */
159 if ((ret = init_server(client, NULL)) < 0) {
160 avahi_client_set_errno(client, ret);
166 } else if (!avahi_client_is_connected(client)) {
168 /* Ignore messages we get in unconnected state */
170 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVER, "StateChanged")) {
175 if (!dbus_message_get_args(
177 DBUS_TYPE_INT32, &state,
178 DBUS_TYPE_STRING, &e,
179 DBUS_TYPE_INVALID) || dbus_error_is_set (&error)) {
181 fprintf(stderr, "WARNING: Failed to parse Server.StateChanged signal: %s\n", error.message);
182 avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
186 if ((c = avahi_error_dbus_to_number(e)) != AVAHI_OK)
187 avahi_client_set_errno(client, c);
189 client_set_state(client, (AvahiClientState) state);
191 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged")) {
194 path = dbus_message_get_path(message);
196 for (g = client->groups; g; g = g->groups_next)
197 if (strcmp(g->path, path) == 0)
205 if (!dbus_message_get_args(
207 DBUS_TYPE_INT32, &state,
208 DBUS_TYPE_STRING, &e,
209 DBUS_TYPE_INVALID) ||
210 dbus_error_is_set(&error)) {
212 fprintf(stderr, "WARNING: Failed to parse EntryGroup.StateChanged signal: %s\n", error.message);
213 avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
217 if ((c = avahi_error_dbus_to_number(e)) != AVAHI_OK)
218 avahi_client_set_errno(client, c);
220 avahi_entry_group_set_state(g, state);
223 } else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemNew"))
224 return avahi_domain_browser_event(client, AVAHI_BROWSER_NEW, message);
225 else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemRemove"))
226 return avahi_domain_browser_event(client, AVAHI_BROWSER_REMOVE, message);
227 else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "CacheExhausted"))
228 return avahi_domain_browser_event(client, AVAHI_BROWSER_CACHE_EXHAUSTED, message);
229 else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "AllForNow"))
230 return avahi_domain_browser_event(client, AVAHI_BROWSER_ALL_FOR_NOW, message);
231 else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "Failure"))
232 return avahi_domain_browser_event(client, AVAHI_BROWSER_FAILURE, message);
234 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemNew"))
235 return avahi_service_type_browser_event (client, AVAHI_BROWSER_NEW, message);
236 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemRemove"))
237 return avahi_service_type_browser_event (client, AVAHI_BROWSER_REMOVE, message);
238 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "CacheExhausted"))
239 return avahi_service_type_browser_event (client, AVAHI_BROWSER_CACHE_EXHAUSTED, message);
240 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "AllForNow"))
241 return avahi_service_type_browser_event (client, AVAHI_BROWSER_ALL_FOR_NOW, message);
242 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "Failure"))
243 return avahi_service_type_browser_event (client, AVAHI_BROWSER_FAILURE, message);
245 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemNew"))
246 return avahi_service_browser_event (client, AVAHI_BROWSER_NEW, message);
247 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemRemove"))
248 return avahi_service_browser_event (client, AVAHI_BROWSER_REMOVE, message);
249 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "CacheExhausted"))
250 return avahi_service_browser_event (client, AVAHI_BROWSER_CACHE_EXHAUSTED, message);
251 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "AllForNow"))
252 return avahi_service_browser_event (client, AVAHI_BROWSER_ALL_FOR_NOW, message);
253 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "Failure"))
254 return avahi_service_browser_event (client, AVAHI_BROWSER_FAILURE, message);
256 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, "Found"))
257 return avahi_service_resolver_event (client, AVAHI_RESOLVER_FOUND, message);
258 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, "Failure"))
259 return avahi_service_resolver_event (client, AVAHI_RESOLVER_FAILURE, message);
261 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_HOST_NAME_RESOLVER, "Found"))
262 return avahi_host_name_resolver_event (client, AVAHI_RESOLVER_FOUND, message);
263 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_HOST_NAME_RESOLVER, "Failure"))
264 return avahi_host_name_resolver_event (client, AVAHI_RESOLVER_FAILURE, message);
266 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_ADDRESS_RESOLVER, "Found"))
267 return avahi_address_resolver_event (client, AVAHI_RESOLVER_FOUND, message);
268 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_ADDRESS_RESOLVER, "Failure"))
269 return avahi_address_resolver_event (client, AVAHI_RESOLVER_FAILURE, message);
271 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "ItemNew"))
272 return avahi_record_browser_event (client, AVAHI_BROWSER_NEW, message);
273 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "ItemRemove"))
274 return avahi_record_browser_event (client, AVAHI_BROWSER_REMOVE, message);
275 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "CacheExhausted"))
276 return avahi_record_browser_event (client, AVAHI_BROWSER_CACHE_EXHAUSTED, message);
277 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "AllForNow"))
278 return avahi_record_browser_event (client, AVAHI_BROWSER_ALL_FOR_NOW, message);
279 else if (dbus_message_is_signal(message, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "Failure"))
280 return avahi_record_browser_event (client, AVAHI_BROWSER_FAILURE, message);
284 fprintf(stderr, "WARNING: Unhandled message: interface=%s, path=%s, member=%s\n",
285 dbus_message_get_interface(message),
286 dbus_message_get_path(message),
287 dbus_message_get_member(message));
289 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
292 return DBUS_HANDLER_RESULT_HANDLED;
296 if (dbus_error_is_set(&error)) {
297 avahi_client_set_errno(client, avahi_error_dbus_to_number(error.name));
298 dbus_error_free(&error);
301 client_set_state(client, AVAHI_CLIENT_FAILURE);
303 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
306 static int get_server_state(AvahiClient *client, int *ret_error) {
307 DBusMessage *message = NULL, *reply = NULL;
310 int e = AVAHI_ERR_NO_MEMORY;
314 dbus_error_init(&error);
316 if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetState")))
319 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
321 if (!reply || dbus_error_is_set (&error))
324 if (!dbus_message_get_args(reply, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID) ||
325 dbus_error_is_set (&error))
328 client_set_state(client, (AvahiServerState) state);
330 dbus_message_unref(message);
331 dbus_message_unref(reply);
336 if (dbus_error_is_set(&error)) {
337 e = avahi_error_dbus_to_number (error.name);
338 dbus_error_free(&error);
345 dbus_message_unref(message);
347 dbus_message_unref(reply);
352 static int check_version(AvahiClient *client, int *ret_error) {
353 DBusMessage *message = NULL, *reply = NULL;
356 int e = AVAHI_ERR_NO_MEMORY;
360 dbus_error_init(&error);
362 if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetAPIVersion")))
365 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
367 if (!reply || dbus_error_is_set (&error)) {
370 if (!dbus_error_is_set(&error) || strcmp(error.name, DBUS_ERROR_UNKNOWN_METHOD))
373 /* If the method GetAPIVersion is not known, we look if
374 * GetVersionString matches "avahi 0.6" which is the only
375 * version we support which doesn't have GetAPIVersion() .*/
377 dbus_message_unref(message);
378 if (reply) dbus_message_unref(reply);
379 dbus_error_free(&error);
381 if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetVersionString")))
384 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
386 if (!reply || dbus_error_is_set (&error))
389 if (!dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &version_str, DBUS_TYPE_INVALID) ||
390 dbus_error_is_set (&error))
393 version = strcmp(version_str, "avahi 0.6") == 0 ? 0x0201 : 0x0000;
397 if (!dbus_message_get_args (reply, &error, DBUS_TYPE_UINT32, &version, DBUS_TYPE_INVALID) ||
398 dbus_error_is_set(&error))
402 /*fprintf(stderr, "API Version 0x%04x\n", version);*/
404 if ((version & 0xFF00) != (AVAHI_CLIENT_DBUS_API_SUPPORTED & 0xFF00) ||
405 (version & 0x00FF) < (AVAHI_CLIENT_DBUS_API_SUPPORTED & 0x00FF)) {
406 e = AVAHI_ERR_VERSION_MISMATCH;
410 dbus_message_unref(message);
411 dbus_message_unref(reply);
416 if (dbus_error_is_set(&error)) {
417 e = avahi_error_dbus_to_number (error.name);
418 dbus_error_free(&error);
425 dbus_message_unref(message);
427 dbus_message_unref(reply);
432 static int init_server(AvahiClient *client, int *ret_error) {
435 if ((r = check_version(client, ret_error)) < 0)
438 if ((r = get_server_state(client, ret_error)) < 0)
444 /* This function acts like dbus_bus_get but creates a private
445 * connection instead. */
446 static DBusConnection* avahi_dbus_bus_get(DBusError *error) {
449 #ifdef HAVE_DBUS_BUS_GET_PRIVATE
450 if (!(c = dbus_bus_get_private(DBUS_BUS_SYSTEM, error)))
453 dbus_connection_set_exit_on_disconnect(c, FALSE);
457 if (!(a = getenv("DBUS_SYSTEM_BUS_ADDRESS")) || !*a)
458 a = DBUS_SYSTEM_BUS_DEFAULT_ADDRESS;
460 if (!(c = dbus_connection_open_private(a, error)))
463 dbus_connection_set_exit_on_disconnect(c, FALSE);
465 if (!dbus_bus_register(c, error)) {
466 #ifdef HAVE_DBUS_CONNECTION_CLOSE
467 dbus_connection_close(c);
469 dbus_connection_disconnect(c);
471 dbus_connection_unref(c);
479 AvahiClient *avahi_client_new(const AvahiPoll *poll_api, AvahiClientFlags flags, AvahiClientCallback callback, void *userdata, int *ret_error) {
480 AvahiClient *client = NULL;
485 dbus_error_init(&error);
487 if (!(client = avahi_new(AvahiClient, 1))) {
489 *ret_error = AVAHI_ERR_NO_MEMORY;
493 client->poll_api = poll_api;
494 client->error = AVAHI_OK;
495 client->callback = callback;
496 client->userdata = userdata;
497 client->state = (AvahiClientState) -1;
498 client->flags = flags;
500 client->host_name = NULL;
501 client->host_name_fqdn = NULL;
502 client->domain_name = NULL;
503 client->version_string = NULL;
504 client->local_service_cookie_valid = 0;
506 AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, client->groups);
507 AVAHI_LLIST_HEAD_INIT(AvahiDomainBrowser, client->domain_browsers);
508 AVAHI_LLIST_HEAD_INIT(AvahiServiceBrowser, client->service_browsers);
509 AVAHI_LLIST_HEAD_INIT(AvahiServiceTypeBrowser, client->service_type_browsers);
510 AVAHI_LLIST_HEAD_INIT(AvahiServiceResolver, client->service_resolvers);
511 AVAHI_LLIST_HEAD_INIT(AvahiHostNameResolver, client->host_name_resolvers);
512 AVAHI_LLIST_HEAD_INIT(AvahiAddressResolver, client->address_resolvers);
513 AVAHI_LLIST_HEAD_INIT(AvahiRecordBrowser, client->record_browsers);
515 if (!(client->bus = avahi_dbus_bus_get(&error)) || dbus_error_is_set(&error)) {
517 *ret_error = AVAHI_ERR_DBUS_ERROR;
521 if (avahi_dbus_connection_glue(client->bus, poll_api) < 0) {
523 *ret_error = AVAHI_ERR_NO_MEMORY; /* Not optimal */
527 if (!dbus_connection_add_filter (client->bus, filter_func, client, NULL)) {
529 *ret_error = AVAHI_ERR_NO_MEMORY;
536 "interface='" AVAHI_DBUS_INTERFACE_SERVER "', "
537 "sender='" AVAHI_DBUS_NAME "', "
538 "path='" AVAHI_DBUS_PATH_SERVER "'",
541 if (dbus_error_is_set(&error))
547 "interface='" DBUS_INTERFACE_DBUS "', "
548 "sender='" DBUS_SERVICE_DBUS "', "
549 "path='" DBUS_PATH_DBUS "'",
552 if (dbus_error_is_set(&error))
558 "interface='" DBUS_INTERFACE_LOCAL "'",
561 if (dbus_error_is_set(&error))
565 if (!(dbus_bus_name_has_owner(client->bus, AVAHI_DBUS_NAME, &error)) ||
566 dbus_error_is_set(&error)) {
568 /* We free the error so its not set, that way the fail target
569 * will return the NO_DAEMON error rather than a DBUS error */
570 dbus_error_free(&error);
572 if (!(flags & AVAHI_CLIENT_NO_FAIL)) {
575 *ret_error = AVAHI_ERR_NO_DAEMON;
580 /* The user doesn't want this call to fail if the daemon is not
581 * available, so let's return succesfully */
582 client_set_state(client, AVAHI_CLIENT_CONNECTING);
586 if (init_server(client, ret_error) < 0)
595 avahi_client_free(client);
597 if (dbus_error_is_set(&error)) {
600 if (strcmp(error.name, DBUS_ERROR_FILE_NOT_FOUND) == 0)
601 /* DBUS returns this error when the DBUS daemon is not running */
602 *ret_error = AVAHI_ERR_NO_DAEMON;
604 *ret_error = avahi_error_dbus_to_number(error.name);
607 dbus_error_free(&error);
613 void avahi_client_free(AvahiClient *client) {
617 /* Disconnect in advance, so that the free() functions won't
618 * issue needless server calls */
619 #ifdef HAVE_DBUS_CONNECTION_CLOSE
620 dbus_connection_close(client->bus);
622 dbus_connection_disconnect(client->bus);
625 while (client->groups)
626 avahi_entry_group_free(client->groups);
628 while (client->domain_browsers)
629 avahi_domain_browser_free(client->domain_browsers);
631 while (client->service_browsers)
632 avahi_service_browser_free(client->service_browsers);
634 while (client->service_type_browsers)
635 avahi_service_type_browser_free(client->service_type_browsers);
637 while (client->service_resolvers)
638 avahi_service_resolver_free(client->service_resolvers);
640 while (client->host_name_resolvers)
641 avahi_host_name_resolver_free(client->host_name_resolvers);
643 while (client->address_resolvers)
644 avahi_address_resolver_free(client->address_resolvers);
646 while (client->record_browsers)
647 avahi_record_browser_free(client->record_browsers);
650 dbus_connection_unref(client->bus);
652 avahi_free(client->version_string);
653 avahi_free(client->host_name);
654 avahi_free(client->host_name_fqdn);
655 avahi_free(client->domain_name);
660 static char* avahi_client_get_string_reply_and_block (AvahiClient *client, const char *method, const char *param) {
661 DBusMessage *message = NULL, *reply = NULL;
668 dbus_error_init (&error);
670 if (!(message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, method))) {
671 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
676 if (!dbus_message_append_args (message, DBUS_TYPE_STRING, ¶m, DBUS_TYPE_INVALID)) {
677 avahi_client_set_errno (client, AVAHI_ERR_NO_MEMORY);
682 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
684 if (!reply || dbus_error_is_set (&error))
687 if (!dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &ret, DBUS_TYPE_INVALID) ||
688 dbus_error_is_set (&error))
691 if (!(n = avahi_strdup(ret))) {
692 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
696 dbus_message_unref(message);
697 dbus_message_unref(reply);
704 dbus_message_unref(message);
706 dbus_message_unref(reply);
708 if (dbus_error_is_set(&error)) {
709 avahi_client_set_dbus_error(client, &error);
710 dbus_error_free(&error);
716 const char* avahi_client_get_version_string(AvahiClient *client) {
719 if (!avahi_client_is_connected(client)) {
720 avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
724 if (!client->version_string)
725 client->version_string = avahi_client_get_string_reply_and_block(client, "GetVersionString", NULL);
727 return client->version_string;
730 const char* avahi_client_get_domain_name(AvahiClient *client) {
733 if (!avahi_client_is_connected(client)) {
734 avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
738 if (!client->domain_name)
739 client->domain_name = avahi_client_get_string_reply_and_block(client, "GetDomainName", NULL);
741 return client->domain_name;
744 const char* avahi_client_get_host_name(AvahiClient *client) {
747 if (!avahi_client_is_connected(client)) {
748 avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
752 if (!client->host_name)
753 client->host_name = avahi_client_get_string_reply_and_block(client, "GetHostName", NULL);
755 return client->host_name;
758 const char* avahi_client_get_host_name_fqdn (AvahiClient *client) {
761 if (!avahi_client_is_connected(client)) {
762 avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
766 if (!client->host_name_fqdn)
767 client->host_name_fqdn = avahi_client_get_string_reply_and_block(client, "GetHostNameFqdn", NULL);
769 return client->host_name_fqdn;
772 AvahiClientState avahi_client_get_state(AvahiClient *client) {
775 return client->state;
778 int avahi_client_errno(AvahiClient *client) {
781 return client->error;
784 /* Just for internal use */
785 int avahi_client_simple_method_call(AvahiClient *client, const char *path, const char *interface, const char *method) {
786 DBusMessage *message = NULL, *reply = NULL;
790 dbus_error_init(&error);
797 if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, path, interface, method))) {
798 r = avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
802 if (!(reply = dbus_connection_send_with_reply_and_block(client->bus, message, -1, &error)) ||
803 dbus_error_is_set (&error)) {
804 r = avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
808 if (!dbus_message_get_args(reply, &error, DBUS_TYPE_INVALID) ||
809 dbus_error_is_set (&error)) {
810 r = avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
814 dbus_message_unref(message);
815 dbus_message_unref(reply);
820 if (dbus_error_is_set(&error)) {
821 r = avahi_client_set_dbus_error(client, &error);
822 dbus_error_free(&error);
826 dbus_message_unref(message);
829 dbus_message_unref(reply);
834 uint32_t avahi_client_get_local_service_cookie(AvahiClient *client) {
835 DBusMessage *message = NULL, *reply = NULL;
839 if (!avahi_client_is_connected(client)) {
840 avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
841 return AVAHI_SERVICE_COOKIE_INVALID;
844 if (client->local_service_cookie_valid)
845 return client->local_service_cookie;
847 dbus_error_init (&error);
849 if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetLocalServiceCookie"))) {
850 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
854 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
856 if (!reply || dbus_error_is_set (&error))
859 if (!dbus_message_get_args (reply, &error, DBUS_TYPE_UINT32, &client->local_service_cookie, DBUS_TYPE_INVALID) ||
860 dbus_error_is_set (&error))
863 dbus_message_unref(message);
864 dbus_message_unref(reply);
866 client->local_service_cookie_valid = 1;
867 return client->local_service_cookie;
872 dbus_message_unref(message);
874 dbus_message_unref(reply);
876 if (dbus_error_is_set(&error)) {
877 avahi_client_set_dbus_error(client, &error);
878 dbus_error_free(&error);
881 return AVAHI_SERVICE_COOKIE_INVALID;
884 int avahi_client_is_connected(AvahiClient *client) {
889 dbus_connection_get_is_connected(client->bus) &&
890 (client->state == AVAHI_CLIENT_S_RUNNING || client->state == AVAHI_CLIENT_S_REGISTERING || client->state == AVAHI_CLIENT_S_COLLISION);
893 int avahi_client_set_host_name(AvahiClient* client, const char *name) {
894 DBusMessage *message = NULL, *reply = NULL;
899 if (!avahi_client_is_connected(client))
900 return avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
902 dbus_error_init (&error);
904 if (!(message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "SetHostName"))) {
905 avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
909 if (!dbus_message_append_args (message, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID)) {
910 avahi_client_set_errno (client, AVAHI_ERR_NO_MEMORY);
914 reply = dbus_connection_send_with_reply_and_block(client->bus, message, -1, &error);
916 if (!reply || dbus_error_is_set (&error))
919 if (!dbus_message_get_args(reply, &error, DBUS_TYPE_INVALID) ||
920 dbus_error_is_set (&error))
923 dbus_message_unref(message);
924 dbus_message_unref(reply);
926 avahi_free(client->host_name);
927 client->host_name = NULL;
928 avahi_free(client->host_name_fqdn);
929 client->host_name_fqdn = NULL;
936 dbus_message_unref(message);
938 dbus_message_unref(reply);
940 if (dbus_error_is_set(&error)) {
941 avahi_client_set_dbus_error(client, &error);
942 dbus_error_free(&error);
945 return client->error;