5 * Copyright (C) 2004-2011 Marcel Holtmann <marcel@holtmann.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
29 #include <dbus/dbus.h>
37 struct timeout_handler {
48 struct disconnect_data {
49 GDBusWatchFunction function;
53 static gboolean disconnected_signal(DBusConnection *conn,
54 DBusMessage *msg, void *data)
56 struct disconnect_data *dc_data = data;
58 error("Got disconnected from the system message bus");
60 dc_data->function(conn, dc_data->user_data);
62 dbus_connection_unref(conn);
67 static gboolean message_dispatch(void *data)
69 DBusConnection *conn = data;
71 /* Dispatch messages */
72 while (dbus_connection_dispatch(conn) == DBUS_DISPATCH_DATA_REMAINS);
74 dbus_connection_unref(conn);
79 static inline void queue_dispatch(DBusConnection *conn,
80 DBusDispatchStatus status)
82 if (status == DBUS_DISPATCH_DATA_REMAINS)
83 g_idle_add(message_dispatch, dbus_connection_ref(conn));
86 static gboolean watch_func(GIOChannel *chan, GIOCondition cond, gpointer data)
88 struct watch_info *info = data;
89 unsigned int flags = 0;
90 DBusDispatchStatus status;
92 if (cond & G_IO_IN) flags |= DBUS_WATCH_READABLE;
93 if (cond & G_IO_OUT) flags |= DBUS_WATCH_WRITABLE;
94 if (cond & G_IO_HUP) flags |= DBUS_WATCH_HANGUP;
95 if (cond & G_IO_ERR) flags |= DBUS_WATCH_ERROR;
97 dbus_watch_handle(info->watch, flags);
99 status = dbus_connection_get_dispatch_status(info->conn);
100 queue_dispatch(info->conn, status);
105 static void watch_info_free(void *data)
107 struct watch_info *info = data;
110 g_source_remove(info->id);
114 dbus_connection_unref(info->conn);
119 static dbus_bool_t add_watch(DBusWatch *watch, void *data)
121 DBusConnection *conn = data;
122 GIOCondition cond = G_IO_HUP | G_IO_ERR;
124 struct watch_info *info;
128 if (!dbus_watch_get_enabled(watch))
131 info = g_new0(struct watch_info, 1);
133 fd = dbus_watch_get_unix_fd(watch);
134 chan = g_io_channel_unix_new(fd);
137 info->conn = dbus_connection_ref(conn);
139 dbus_watch_set_data(watch, info, watch_info_free);
141 flags = dbus_watch_get_flags(watch);
143 if (flags & DBUS_WATCH_READABLE) cond |= G_IO_IN;
144 if (flags & DBUS_WATCH_WRITABLE) cond |= G_IO_OUT;
146 info->id = g_io_add_watch(chan, cond, watch_func, info);
148 g_io_channel_unref(chan);
153 static void remove_watch(DBusWatch *watch, void *data)
155 if (dbus_watch_get_enabled(watch))
158 /* will trigger watch_info_free() */
159 dbus_watch_set_data(watch, NULL, NULL);
162 static void watch_toggled(DBusWatch *watch, void *data)
164 /* Because we just exit on OOM, enable/disable is
165 * no different from add/remove */
166 if (dbus_watch_get_enabled(watch))
167 add_watch(watch, data);
169 remove_watch(watch, data);
172 static gboolean timeout_handler_dispatch(gpointer data)
174 struct timeout_handler *handler = data;
178 /* if not enabled should not be polled by the main loop */
179 if (!dbus_timeout_get_enabled(handler->timeout))
182 dbus_timeout_handle(handler->timeout);
187 static void timeout_handler_free(void *data)
189 struct timeout_handler *handler = data;
191 if (handler->id > 0) {
192 g_source_remove(handler->id);
199 static dbus_bool_t add_timeout(DBusTimeout *timeout, void *data)
201 int interval = dbus_timeout_get_interval(timeout);
202 struct timeout_handler *handler;
204 if (!dbus_timeout_get_enabled(timeout))
207 handler = g_new0(struct timeout_handler, 1);
209 handler->timeout = timeout;
211 dbus_timeout_set_data(timeout, handler, timeout_handler_free);
213 handler->id = g_timeout_add(interval, timeout_handler_dispatch,
219 static void remove_timeout(DBusTimeout *timeout, void *data)
221 /* will trigger timeout_handler_free() */
222 dbus_timeout_set_data(timeout, NULL, NULL);
225 static void timeout_toggled(DBusTimeout *timeout, void *data)
227 if (dbus_timeout_get_enabled(timeout))
228 add_timeout(timeout, data);
230 remove_timeout(timeout, data);
233 static void dispatch_status(DBusConnection *conn,
234 DBusDispatchStatus status, void *data)
236 if (!dbus_connection_get_is_connected(conn))
239 queue_dispatch(conn, status);
242 static inline void setup_dbus_with_main_loop(DBusConnection *conn)
244 dbus_connection_set_watch_functions(conn, add_watch, remove_watch,
245 watch_toggled, conn, NULL);
247 dbus_connection_set_timeout_functions(conn, add_timeout, remove_timeout,
248 timeout_toggled, NULL, NULL);
250 dbus_connection_set_dispatch_status_function(conn, dispatch_status,
254 static gboolean setup_bus(DBusConnection *conn, const char *name,
258 DBusDispatchStatus status;
261 result = g_dbus_request_name(conn, name, error);
264 if (dbus_error_is_set(error) == TRUE)
272 setup_dbus_with_main_loop(conn);
274 status = dbus_connection_get_dispatch_status(conn);
275 queue_dispatch(conn, status);
280 DBusConnection *g_dbus_setup_bus(DBusBusType type, const char *name,
283 DBusConnection *conn;
285 conn = dbus_bus_get(type, error);
288 if (dbus_error_is_set(error) == TRUE)
295 if (setup_bus(conn, name, error) == FALSE) {
296 dbus_connection_unref(conn);
303 DBusConnection *g_dbus_setup_private(DBusBusType type, const char *name,
306 DBusConnection *conn;
308 conn = dbus_bus_get_private(type, error);
311 if (dbus_error_is_set(error) == TRUE)
318 if (setup_bus(conn, name, error) == FALSE) {
319 dbus_connection_unref(conn);
326 gboolean g_dbus_request_name(DBusConnection *connection, const char *name,
331 result = dbus_bus_request_name(connection, name,
332 DBUS_NAME_FLAG_DO_NOT_QUEUE, error);
335 if (dbus_error_is_set(error) == TRUE)
339 if (result != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) {
341 dbus_set_error(error, name, "Name already in use");
349 gboolean g_dbus_set_disconnect_function(DBusConnection *connection,
350 GDBusWatchFunction function,
351 void *user_data, DBusFreeFunction destroy)
353 struct disconnect_data *dc_data;
355 dc_data = g_new0(struct disconnect_data, 1);
357 dc_data->function = function;
358 dc_data->user_data = user_data;
360 dbus_connection_set_exit_on_disconnect(connection, FALSE);
362 if (g_dbus_add_signal_watch(connection, NULL, NULL,
363 DBUS_INTERFACE_LOCAL, "Disconnected",
364 disconnected_signal, dc_data, g_free) == 0) {
365 error("Failed to add watch for D-Bus Disconnected signal");