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>
34 #include <dbus/dbus.h>
35 #include <dbus/dbus-glib-lowlevel.h>
43 avahi_client_set_errno (AvahiClient *client, int error)
45 if (client == NULL) return error;
47 client->error = error;
53 void avahi_client_state_change (AvahiClient *client, int state)
55 if (client == NULL || client->callback == NULL)
58 client->callback (client, state, client->user_data);
62 avahi_client_state_request_callback (DBusPendingCall *call, void *data)
64 AvahiClient *client = data;
69 dbus_error_init (&error);
71 reply = dbus_pending_call_steal_reply (call);
73 type = dbus_message_get_type (reply);
75 if (type == DBUS_MESSAGE_TYPE_METHOD_RETURN)
77 dbus_message_get_args (reply, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID);
79 if (dbus_error_is_set (&error))
82 avahi_client_state_change (client, state);
83 } else if (type == DBUS_MESSAGE_TYPE_ERROR) {
84 dbus_set_error_from_message (&error, reply);
87 dbus_pending_call_unref (call);
91 avahi_client_schedule_state_request (AvahiClient *client)
94 DBusPendingCall *pcall;
96 if (client == NULL) return;
98 message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetState");
100 dbus_connection_send_with_reply (client->bus, message, &pcall, -1);
102 dbus_pending_call_set_notify (pcall, avahi_client_state_request_callback, client, NULL);
105 static DBusHandlerResult
106 filter_func (DBusConnection *bus, DBusMessage *message, void *data)
108 AvahiClient *client = data;
111 printf ("dbus: interface=%s, path=%s, member=%s\n",
112 dbus_message_get_interface (message),
113 dbus_message_get_path (message),
114 dbus_message_get_member (message));
116 dbus_error_init (&error);
118 if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
119 gchar *name, *old, *new;
120 dbus_message_get_args(message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old, DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID);
122 if (dbus_error_is_set (&error)) {
123 dbus_error_free (&error);
127 if (strcmp (name, AVAHI_DBUS_NAME) == 0) {
129 if (old == NULL && new != NULL) {
130 avahi_client_state_change (client, AVAHI_CLIENT_RECONNECTED);
131 } else if (old != NULL && new == NULL) {
132 avahi_client_state_change (client, AVAHI_CLIENT_DISCONNECTED);
133 /* XXX: we really need to expire all entry groups */
136 } else if (dbus_message_is_signal (message, AVAHI_DBUS_NAME, "StateChanged")) {
138 printf ("server statechange\n");
139 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged")) {
141 AvahiEntryGroup *n, *group = NULL;
142 path = dbus_message_get_path (message);
144 for (n = client->groups; n != NULL; n = n->groups_next)
146 if (strcmp (n->path, path) == 0)
156 dbus_error_init (&error);
157 dbus_message_get_args (message, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID);
158 if (dbus_error_is_set (&error))
161 avahi_entry_group_state_change (group, state);
163 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemNew")) {
164 return avahi_domain_browser_event (client, AVAHI_BROWSER_NEW, message);
165 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemRemove")) {
166 return avahi_domain_browser_event (client, AVAHI_BROWSER_REMOVE, message);
167 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemNew")) {
168 return avahi_service_type_browser_event (client, AVAHI_BROWSER_NEW, message);
169 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemRemove")) {
170 return avahi_service_type_browser_event (client, AVAHI_BROWSER_REMOVE, message);
171 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemNew")) {
172 return avahi_service_browser_event (client, AVAHI_BROWSER_NEW, message);
173 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemRemove")) {
174 return avahi_service_browser_event (client, AVAHI_BROWSER_REMOVE, message);
177 return DBUS_HANDLER_RESULT_HANDLED;
180 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
184 avahi_client_new (AvahiClientCallback callback, void *user_data)
186 AvahiClient *tmp = NULL;
189 dbus_error_init (&error);
191 if (!(tmp = malloc(sizeof(AvahiClient))))
194 AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, tmp->groups);
195 AVAHI_LLIST_HEAD_INIT(AvahiDomainBrowser, tmp->domain_browsers);
196 AVAHI_LLIST_HEAD_INIT(AvahiServiceBrowser, tmp->service_browsers);
197 AVAHI_LLIST_HEAD_INIT(AvahiServiceTypeBrowser, tmp->service_type_browsers);
199 tmp->bus = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
201 if (dbus_error_is_set (&error)) {
205 dbus_connection_setup_with_g_main (tmp->bus, NULL);
206 dbus_connection_set_exit_on_disconnect (tmp->bus, FALSE);
208 if (!dbus_connection_add_filter (tmp->bus, filter_func, tmp, NULL))
213 dbus_bus_add_match (tmp->bus,
215 "interface='" AVAHI_DBUS_INTERFACE_SERVER "', "
216 "sender='" AVAHI_DBUS_NAME "', "
217 "path='" AVAHI_DBUS_PATH_SERVER "'",
220 if (dbus_error_is_set (&error))
225 dbus_bus_add_match (tmp->bus,
227 "interface='" DBUS_INTERFACE_DBUS "', "
228 "sender='" DBUS_SERVICE_DBUS "', "
229 "path='" DBUS_PATH_DBUS "'",
232 if (dbus_error_is_set (&error))
237 tmp->callback = callback;
238 tmp->user_data = user_data;
240 avahi_client_schedule_state_request (tmp);
242 avahi_client_set_errno (tmp, AVAHI_OK);
248 if (dbus_error_is_set(&error))
249 dbus_error_free(&error);
255 avahi_client_get_string_reply_and_block (AvahiClient *client, char *method, char *param)
257 DBusMessage *message;
262 if (client == NULL || method == NULL) return NULL;
264 dbus_error_init (&error);
266 message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, method);
270 if (!dbus_message_append_args (message, DBUS_TYPE_STRING, ¶m, DBUS_TYPE_INVALID))
272 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
277 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
279 if (dbus_error_is_set (&error))
281 dbus_error_free (&error);
282 dbus_message_unref (message);
284 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
290 dbus_message_unref (message);
292 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
296 dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &ret, DBUS_TYPE_INVALID);
298 if (dbus_error_is_set (&error))
300 dbus_error_free (&error);
302 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
308 avahi_client_set_errno (client, AVAHI_OK);
313 avahi_client_get_version_string (AvahiClient *client)
315 return avahi_client_get_string_reply_and_block (client, "GetVersionString", NULL);
319 avahi_client_get_domain_name (AvahiClient *client)
321 return avahi_client_get_string_reply_and_block (client, "GetDomainName", NULL);
325 avahi_client_get_host_name (AvahiClient *client)
327 return avahi_client_get_string_reply_and_block (client, "GetHostName", NULL);
331 avahi_client_get_host_name_fqdn (AvahiClient *client)
333 return avahi_client_get_string_reply_and_block (client, "GetHostNameFqdn", NULL);