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
26 #include <avahi-client/client.h>
27 #include <avahi-common/dbus.h>
28 #include <avahi-common/llist.h>
29 #include <avahi-common/error.h>
30 #include <avahi-common/malloc.h>
31 #include <avahi-common/dbus-watch-glue.h>
36 #include <dbus/dbus.h>
43 int avahi_client_set_errno (AvahiClient *client, int error) {
46 return client->error = error;
49 static void client_set_state (AvahiClient *client, AvahiServerState state) {
52 if (client->state == state)
55 client->state = state;
58 client->callback (client, state, client->userdata);
61 static DBusHandlerResult
62 filter_func (DBusConnection *bus, DBusMessage *message, void *data)
64 AvahiClient *client = data;
67 printf ("dbus: interface=%s, path=%s, member=%s\n",
68 dbus_message_get_interface (message),
69 dbus_message_get_path (message),
70 dbus_message_get_member (message));
72 dbus_error_init (&error);
74 if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
75 char *name, *old, *new;
76 dbus_message_get_args(message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old, DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID);
78 if (dbus_error_is_set (&error)) {
79 dbus_error_free (&error);
83 if (strcmp (name, AVAHI_DBUS_NAME) == 0) {
85 if (old == NULL && new != NULL) {
86 client_set_state (client, AVAHI_CLIENT_RECONNECTED);
87 } else if (old != NULL && new == NULL) {
88 client_set_state (client, AVAHI_CLIENT_DISCONNECTED);
89 /* XXX: we really need to expire all entry groups */
92 } else if (dbus_message_is_signal (message, AVAHI_DBUS_NAME, "StateChanged")) {
94 printf ("server statechange\n");
95 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged")) {
97 AvahiEntryGroup *n, *group = NULL;
98 path = dbus_message_get_path (message);
100 for (n = client->groups; n != NULL; n = n->groups_next)
102 if (strcmp (n->path, path) == 0)
111 dbus_message_get_args (message, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID);
112 if (dbus_error_is_set (&error))
115 avahi_entry_group_state_change (group, state);
117 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemNew")) {
118 return avahi_domain_browser_event (client, AVAHI_BROWSER_NEW, message);
119 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemRemove")) {
120 return avahi_domain_browser_event (client, AVAHI_BROWSER_REMOVE, message);
121 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemNew")) {
122 return avahi_service_type_browser_event (client, AVAHI_BROWSER_NEW, message);
123 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemRemove")) {
124 return avahi_service_type_browser_event (client, AVAHI_BROWSER_REMOVE, message);
125 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemNew")) {
126 return avahi_service_browser_event (client, AVAHI_BROWSER_NEW, message);
127 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemRemove")) {
128 return avahi_service_browser_event (client, AVAHI_BROWSER_REMOVE, message);
131 return DBUS_HANDLER_RESULT_HANDLED;
134 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
137 static int translate_dbus_error(const DBusError *error) {
140 /*** FIXME! Some more eloquent error translation should happen here */
142 return AVAHI_ERR_DBUS_ERROR;
145 static int get_server_state(AvahiClient *client, int *ret_error) {
146 DBusMessage *message, *reply;
153 dbus_error_init(&error);
155 if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetState")))
158 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
159 dbus_message_unref(message);
164 if (!(dbus_message_get_args(reply, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID)))
167 client_set_state(client, (AvahiServerState) state);
172 if (dbus_error_is_set(&error)) {
173 e = translate_dbus_error(&error);
174 dbus_error_free(&error);
176 e = AVAHI_ERR_NO_MEMORY;
184 AvahiClient *avahi_client_new(const AvahiPoll *poll_api, AvahiClientCallback callback, void *userdata, int *ret_error) {
185 AvahiClient *client = NULL;
188 dbus_error_init (&error);
190 if (!(client = avahi_new(AvahiClient, 1))) {
192 *ret_error = AVAHI_ERR_NO_MEMORY;
196 client->poll_api = poll_api;
197 client->error = AVAHI_OK;
198 client->callback = callback;
199 client->userdata = userdata;
200 client->state = AVAHI_SERVER_INVALID;
202 AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, client->groups);
203 AVAHI_LLIST_HEAD_INIT(AvahiDomainBrowser, client->domain_browsers);
204 AVAHI_LLIST_HEAD_INIT(AvahiServiceBrowser, client->service_browsers);
205 AVAHI_LLIST_HEAD_INIT(AvahiServiceTypeBrowser, client->service_type_browsers);
207 client->bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error);
208 if (dbus_error_is_set (&error)) {
210 *ret_error = translate_dbus_error(&error);
214 if (avahi_dbus_connection_glue(client->bus, poll_api) < 0) {
216 *ret_error = AVAHI_ERR_NO_MEMORY; /* Not optimal */
220 if (!dbus_connection_add_filter (client->bus, filter_func, client, NULL)) {
222 *ret_error = AVAHI_ERR_NO_MEMORY;
229 "interface='" AVAHI_DBUS_INTERFACE_SERVER "', "
230 "sender='" AVAHI_DBUS_NAME "', "
231 "path='" AVAHI_DBUS_PATH_SERVER "'",
234 if (dbus_error_is_set (&error)) {
236 *ret_error = translate_dbus_error(&error);
243 "interface='" DBUS_INTERFACE_DBUS "', "
244 "sender='" DBUS_SERVICE_DBUS "', "
245 "path='" DBUS_PATH_DBUS "'",
248 if (dbus_error_is_set (&error)) {
250 *ret_error = translate_dbus_error(&error);
254 if (!(dbus_bus_name_has_owner(client->bus, AVAHI_DBUS_NAME, &error))) {
256 if (dbus_error_is_set (&error)) {
258 *ret_error = translate_dbus_error(&error);
263 *ret_error = AVAHI_ERR_NO_DAEMON;
267 if (get_server_state(client, ret_error) < 0)
275 avahi_client_free(client);
277 if (dbus_error_is_set(&error))
278 dbus_error_free(&error);
283 void avahi_client_free(AvahiClient *client) {
287 dbus_connection_disconnect(client->bus);
288 dbus_connection_unref(client->bus);
291 while (client->groups)
292 avahi_entry_group_free(client->groups);
294 while (client->domain_browsers)
295 avahi_domain_browser_free(client->domain_browsers);
297 while (client->service_browsers)
298 avahi_service_browser_free(client->service_browsers);
300 while (client->service_type_browsers)
301 avahi_service_type_browser_free(client->service_type_browsers);
307 avahi_client_get_string_reply_and_block (AvahiClient *client, const char *method, const char *param)
309 DBusMessage *message;
314 if (client == NULL || method == NULL) return NULL;
316 dbus_error_init (&error);
318 message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, method);
322 if (!dbus_message_append_args (message, DBUS_TYPE_STRING, ¶m, DBUS_TYPE_INVALID))
324 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
329 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
331 if (dbus_error_is_set (&error))
333 dbus_error_free (&error);
334 dbus_message_unref (message);
336 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
342 dbus_message_unref (message);
344 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
348 dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &ret, DBUS_TYPE_INVALID);
350 if (dbus_error_is_set (&error))
352 dbus_error_free (&error);
354 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
358 new = avahi_strdup (ret);
360 avahi_client_set_errno (client, AVAHI_OK);
365 avahi_client_get_version_string (AvahiClient *client)
367 return avahi_client_get_string_reply_and_block (client, "GetVersionString", NULL);
371 avahi_client_get_domain_name (AvahiClient *client)
373 return avahi_client_get_string_reply_and_block (client, "GetDomainName", NULL);
377 avahi_client_get_host_name (AvahiClient *client)
379 return avahi_client_get_string_reply_and_block (client, "GetHostName", NULL);
383 avahi_client_get_host_name_fqdn (AvahiClient *client)
385 return avahi_client_get_string_reply_and_block (client, "GetHostNameFqdn", NULL);