+static gboolean update_service(void *user_data)
+{
+ struct service_data *data = user_data;
+ struct filter_callback *cb = data->callback;
+
+ update_name_cache(data->name, data->owner);
+ if (cb->conn_func)
+ cb->conn_func(data->conn, cb->user_data);
+
+ service_data_free(data);
+
+ return FALSE;
+}
+
+static void service_reply(DBusPendingCall *call, void *user_data)
+{
+ struct service_data *data = user_data;
+ DBusMessage *reply;
+ DBusError err;
+
+ reply = dbus_pending_call_steal_reply(call);
+ if (reply == NULL)
+ return;
+
+ dbus_error_init(&err);
+
+ if (dbus_set_error_from_message(&err, reply))
+ goto fail;
+
+ if (dbus_message_get_args(reply, &err,
+ DBUS_TYPE_STRING, &data->owner,
+ DBUS_TYPE_INVALID) == FALSE)
+ goto fail;
+
+ update_service(data);
+
+ goto done;
+
+fail:
+ error("%s", err.message);
+ dbus_error_free(&err);
+ service_data_free(data);
+done:
+ dbus_message_unref(reply);
+}
+
+static void check_service(DBusConnection *connection,
+ const char *name,
+ struct filter_callback *callback)
+{
+ DBusMessage *message;
+ struct service_data *data;
+
+ data = g_try_malloc0(sizeof(*data));
+ if (data == NULL) {
+ error("Can't allocate data structure");
+ return;
+ }
+
+ data->conn = dbus_connection_ref(connection);
+ data->name = g_strdup(name);
+ data->callback = callback;
+ callback->data = data;
+
+ data->owner = check_name_cache(name);
+ if (data->owner != NULL) {
+ data->id = g_idle_add(update_service, data);
+ return;
+ }
+
+ message = dbus_message_new_method_call(DBUS_SERVICE_DBUS,
+ DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS, "GetNameOwner");
+ if (message == NULL) {
+ error("Can't allocate new message");
+ g_free(data);
+ return;
+ }
+
+ dbus_message_append_args(message, DBUS_TYPE_STRING, &name,
+ DBUS_TYPE_INVALID);
+
+ if (dbus_connection_send_with_reply(connection, message,
+ &data->call, -1) == FALSE) {
+ error("Failed to execute method call");
+ g_free(data);
+ goto done;
+ }
+
+ if (data->call == NULL) {
+ error("D-Bus connection not available");
+ g_free(data);
+ goto done;
+ }
+
+ dbus_pending_call_set_notify(data->call, service_reply, data, NULL);
+
+done:
+ dbus_message_unref(message);
+}
+