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 #define DBUS_API_SUBJECT_TO_CHANGE
35 #include <dbus/dbus.h>
36 #include <dbus/dbus-glib-lowlevel.h>
44 avahi_client_set_errno (AvahiClient *client, int error)
46 if (client == NULL) return error;
48 client->error = error;
54 void avahi_client_state_change (AvahiClient *client, int state)
56 if (client == NULL || client->callback == NULL)
59 client->callback (client, state, client->user_data);
63 avahi_client_state_request_callback (DBusPendingCall *call, void *data)
65 AvahiClient *client = data;
70 dbus_error_init (&error);
72 reply = dbus_pending_call_steal_reply (call);
74 type = dbus_message_get_type (reply);
76 if (type == DBUS_MESSAGE_TYPE_METHOD_RETURN)
78 dbus_message_get_args (reply, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID);
80 if (dbus_error_is_set (&error))
83 avahi_client_state_change (client, state);
84 } else if (type == DBUS_MESSAGE_TYPE_ERROR) {
85 dbus_set_error_from_message (&error, reply);
88 dbus_pending_call_unref (call);
92 avahi_client_schedule_state_request (AvahiClient *client)
95 DBusPendingCall *pcall;
97 if (client == NULL) return;
99 message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetState");
101 dbus_connection_send_with_reply (client->bus, message, &pcall, -1);
103 dbus_pending_call_set_notify (pcall, avahi_client_state_request_callback, client, NULL);
106 static DBusHandlerResult
107 filter_func (DBusConnection *bus, DBusMessage *message, void *data)
109 AvahiClient *client = data;
112 printf ("dbus: interface=%s, path=%s, member=%s\n",
113 dbus_message_get_interface (message),
114 dbus_message_get_path (message),
115 dbus_message_get_member (message));
117 dbus_error_init (&error);
119 if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
120 gchar *name, *old, *new;
121 dbus_message_get_args(message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old, DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID);
123 if (dbus_error_is_set (&error)) {
124 dbus_error_free (&error);
128 if (strcmp (name, AVAHI_DBUS_NAME) == 0) {
130 if (old == NULL && new != NULL) {
131 avahi_client_state_change (client, AVAHI_CLIENT_RECONNECTED);
132 } else if (old != NULL && new == NULL) {
133 avahi_client_state_change (client, AVAHI_CLIENT_DISCONNECTED);
134 /* XXX: we really need to expire all entry groups */
137 } else if (dbus_message_is_signal (message, AVAHI_DBUS_NAME, "StateChanged")) {
139 printf ("server statechange\n");
140 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged")) {
142 AvahiEntryGroup *n, *group = NULL;
143 path = dbus_message_get_path (message);
145 for (n = client->groups; n != NULL; n = n->groups_next)
147 if (strcmp (n->path, path) == 0)
157 dbus_error_init (&error);
158 dbus_message_get_args (message, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID);
159 if (dbus_error_is_set (&error))
162 avahi_entry_group_state_change (group, state);
164 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemNew")) {
165 return avahi_domain_browser_event (client, AVAHI_BROWSER_NEW, message);
166 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemRemove")) {
167 return avahi_domain_browser_event (client, AVAHI_BROWSER_REMOVE, message);
168 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemNew")) {
169 return avahi_service_type_browser_event (client, AVAHI_BROWSER_NEW, message);
170 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemRemove")) {
171 return avahi_service_type_browser_event (client, AVAHI_BROWSER_REMOVE, message);
172 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemNew")) {
173 return avahi_service_browser_event (client, AVAHI_BROWSER_NEW, message);
174 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemRemove")) {
175 return avahi_service_browser_event (client, AVAHI_BROWSER_REMOVE, message);
178 return DBUS_HANDLER_RESULT_HANDLED;
181 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
185 avahi_client_new (AvahiClientCallback callback, void *user_data)
187 AvahiClient *tmp = NULL;
190 dbus_error_init (&error);
192 if (!(tmp = malloc(sizeof(AvahiClient))))
195 AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, tmp->groups);
196 AVAHI_LLIST_HEAD_INIT(AvahiDomainBrowser, tmp->domain_browsers);
197 AVAHI_LLIST_HEAD_INIT(AvahiServiceBrowser, tmp->service_browsers);
198 AVAHI_LLIST_HEAD_INIT(AvahiServiceTypeBrowser, tmp->service_type_browsers);
200 tmp->bus = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
202 if (dbus_error_is_set (&error)) {
206 dbus_connection_setup_with_g_main (tmp->bus, NULL);
207 dbus_connection_set_exit_on_disconnect (tmp->bus, FALSE);
209 if (!dbus_connection_add_filter (tmp->bus, filter_func, tmp, NULL))
214 dbus_bus_add_match (tmp->bus,
216 "interface='" AVAHI_DBUS_INTERFACE_SERVER "', "
217 "sender='" AVAHI_DBUS_NAME "', "
218 "path='" AVAHI_DBUS_PATH_SERVER "'",
221 if (dbus_error_is_set (&error))
226 dbus_bus_add_match (tmp->bus,
228 "interface='" DBUS_INTERFACE_DBUS "', "
229 "sender='" DBUS_SERVICE_DBUS "', "
230 "path='" DBUS_PATH_DBUS "'",
233 if (dbus_error_is_set (&error))
238 tmp->callback = callback;
239 tmp->user_data = user_data;
241 avahi_client_schedule_state_request (tmp);
243 avahi_client_set_errno (tmp, AVAHI_OK);
249 if (dbus_error_is_set(&error))
250 dbus_error_free(&error);
256 avahi_client_get_string_reply_and_block (AvahiClient *client, char *method, char *param)
258 DBusMessage *message;
263 if (client == NULL || method == NULL) return NULL;
265 dbus_error_init (&error);
267 message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, method);
271 if (!dbus_message_append_args (message, DBUS_TYPE_STRING, ¶m, DBUS_TYPE_INVALID))
273 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
278 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
280 if (dbus_error_is_set (&error))
282 dbus_error_free (&error);
283 dbus_message_unref (message);
285 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
291 dbus_message_unref (message);
293 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
297 dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &ret, DBUS_TYPE_INVALID);
299 if (dbus_error_is_set (&error))
301 dbus_error_free (&error);
303 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
309 avahi_client_set_errno (client, AVAHI_OK);
314 avahi_client_get_version_string (AvahiClient *client)
316 return avahi_client_get_string_reply_and_block (client, "GetVersionString", NULL);
320 avahi_client_get_domain_name (AvahiClient *client)
322 return avahi_client_get_string_reply_and_block (client, "GetDomainName", NULL);
326 avahi_client_get_host_name (AvahiClient *client)
328 return avahi_client_get_string_reply_and_block (client, "GetHostName", NULL);
332 avahi_client_get_host_name_fqdn (AvahiClient *client)
334 return avahi_client_get_string_reply_and_block (client, "GetHostNameFqdn", NULL);