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/* -*- Mode:Vala; indent-tabs-mode:nil; tab-width:4 -*-
*
* Copyright (C) 2011 Canonical Ltd
* Copyright (C) 2015,2017 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* Copyright (C) 2023 Robert Tari
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Michael Terry <michael.terry@canonical.com>
* Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* Robert Tari <robert@tari.in>
*/
public class SettingsDaemon : Object
{
private int sd_pid = 0;
private int logind_inhibit_fd = -1;
private ScreenSaverInterface screen_saver;
private SessionManagerInterface session_manager;
private int n_names = 2;
public void start ()
{
string[] disabled = { "org.mate.SettingsDaemon.plugins.background",
"org.mate.SettingsDaemon.plugins.clipboard",
"org.mate.SettingsDaemon.plugins.datetime",
"org.mate.SettingsDaemon.plugins.housekeeping",
"org.mate.SettingsDaemon.plugins.keybindings",
"org.mate.SettingsDaemon.plugins.keyboard",
"org.mate.SettingsDaemon.plugins.media-keys",
"org.mate.SettingsDaemon.plugins.mouse",
"org.mate.SettingsDaemon.plugins.mpris",
"org.mate.SettingsDaemon.plugins.rfkill",
"org.mate.SettingsDaemon.plugins.smartcard",
"org.mate.SettingsDaemon.plugins.sound",
"org.mate.SettingsDaemon.plugins.typing-break",
"org.mate.SettingsDaemon.plugins.xrdb" };
string[] enabled = { "org.mate.SettingsDaemon.plugins.a11y-keyboard",
"org.mate.SettingsDaemon.plugins.a11y-settings",
"org.mate.SettingsDaemon.plugins.xrandr",
"org.mate.SettingsDaemon.plugins.xsettings" };
foreach (var schema in disabled)
set_plugin_enabled (schema, false);
foreach (var schema in enabled)
set_plugin_enabled (schema, true);
/* Pretend to be MATE/GNOME session */
session_manager = new SessionManagerInterface ();
GLib.Bus.own_name (BusType.SESSION, "org.gnome.SessionManager", BusNameOwnerFlags.NONE,
(c) =>
{
try
{
c.register_object ("/org/gnome/SessionManager", session_manager);
}
catch (Error e)
{
warning ("Failed to register /org/gnome/SessionManager: %s", e.message);
}
},
() =>
{
debug ("Acquired org.gnome.SessionManager");
start_settings_daemon ();
},
() => debug ("Failed to acquire name org.gnome.SessionManager"));
/* The power plugin does the screen saver screen blanking and disables
* the builtin X screen saver. It relies on mate-screensaver to generate
* the event to trigger this (which actually comes from mate-session).
* We implement the mate-screensaver interface and start the settings
* daemon once it is registered on the bus so mate-screensaver is not
* started when it accesses this interface */
screen_saver = new ScreenSaverInterface ();
GLib.Bus.own_name (BusType.SESSION, "org.gnome.ScreenSaver", BusNameOwnerFlags.NONE,
(c) =>
{
try
{
c.register_object ("/org/gnome/ScreenSaver", screen_saver);
}
catch (Error e)
{
warning ("Failed to register /org/gnome/ScreenSaver: %s", e.message);
}
},
() =>
{
debug ("Acquired org.gnome.ScreenSaver");
start_settings_daemon ();
},
() => debug ("Failed to acquire name org.gnome.ScreenSaver"));
/* The media-keys plugin inhibits the power key, but we don't want
all the other keys doing things. So inhibit it ourselves */
/* NOTE: We are using the synchronous method here since there is a bug in Vala/GLib in that
* g_dbus_connection_call_with_unix_fd_list_finish and g_dbus_proxy_call_with_unix_fd_list_finish
* don't have the GAsyncResult as the second argument.
* https://bugzilla.gnome.org/show_bug.cgi?id=688907
*/
try
{
var b = Bus.get_sync (BusType.SYSTEM);
UnixFDList fd_list;
var result = b.call_with_unix_fd_list_sync ("org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"Inhibit",
new Variant ("(ssss)",
"handle-power-key",
Environment.get_user_name (),
"Arctica Greeter handling keypresses",
"block"),
new VariantType ("(h)"),
DBusCallFlags.NONE,
-1,
null,
out fd_list);
int32 index = -1;
result.get ("(h)", &index);
logind_inhibit_fd = fd_list.get (index);
}
catch (Error e)
{
warning ("Failed to inhibit power keys: %s", e.message);
}
}
public void stop ()
{
stop_settings_daemon();
}
private void set_plugin_enabled (string schema_name, bool enabled)
{
var source = SettingsSchemaSource.get_default ();
var schema = source.lookup (schema_name, false);
if (schema != null)
{
var settings = new Settings (schema_name);
settings.set_boolean ("active", enabled);
}
}
private void start_settings_daemon ()
{
n_names--;
if (n_names != 0)
return;
debug ("All bus names acquired, starting %s", Config.SD_BINARY);
try
{
string[] argv;
Shell.parse_argv (Config.SD_BINARY, out argv);
Process.spawn_async (null,
argv,
null,
SpawnFlags.SEARCH_PATH,
null,
out sd_pid);
debug ("Launched %s. PID: %d", Config.SD_BINARY, sd_pid);
}
catch (Error e)
{
debug ("Could not start %s: %s", Config.SD_BINARY, e.message);
}
}
private void stop_settings_daemon ()
{
if (sd_pid != 0)
{
#if VALA_0_40
Posix.kill (sd_pid, Posix.Signal.KILL);
#else
Posix.kill (sd_pid, Posix.SIGKILL);
#endif
int status;
Posix.waitpid (sd_pid, out status, 0);
if (Process.if_exited (status))
debug ("SettingsDaemon exited with return value %d", Process.exit_status (status));
else
debug ("SettingsDaemon terminated with signal %d", Process.term_sig (status));
sd_pid = 0;
}
}
}
[DBus (name="org.gnome.ScreenSaver")]
public class ScreenSaverInterface : Object
{
public signal void active_changed (bool value);
private IdleMonitor idle_monitor;
private bool _active = false;
private uint idle_watch = 0;
public ScreenSaverInterface ()
{
idle_monitor = new IdleMonitor ();
_set_active (false);
}
private void _set_active (bool value)
{
_active = value;
if (idle_watch != 0)
idle_monitor.remove_watch (idle_watch);
idle_watch = 0;
if (value)
{
idle_monitor.add_user_active_watch (() =>
{
try
{
set_active (false);
}
catch (Error pError)
{
error ("Panic: Screensaver activation failed: %s", pError.message);
}
});
}
else
{
var timeout = AGSettings.get_integer (AGSettings.KEY_IDLE_TIMEOUT);
if (timeout > 0)
{
idle_watch = idle_monitor.add_idle_watch (timeout * 1000, () =>
{
try
{
set_active (true);
}
catch (Error pError)
{
error ("Panic: Screensaver activation failed: %s", pError.message);
}
});
}
}
}
public void set_active (bool value) throws GLib.DBusError, GLib.IOError
{
if (_active == value)
return;
if (value)
debug ("Screensaver activated");
else
debug ("Screensaver disabled");
_set_active (value);
active_changed (value);
}
public bool get_active () throws GLib.DBusError, GLib.IOError
{
return _active;
}
public uint32 get_active_time () throws GLib.DBusError, GLib.IOError { return 0; }
public void lock () throws GLib.DBusError, GLib.IOError {}
public void show_message (string summary, string body, string icon) throws GLib.DBusError, GLib.IOError {}
public void simulate_user_activity () throws GLib.DBusError, GLib.IOError {}
}
[DBus (name="org.gnome.SessionManager")]
public class SessionManagerInterface : Object
{
public bool session_is_active { get { return true; } }
public string session_name { get { return "greeter"; } }
public uint32 inhibited_actions { get { return 0; } }
}
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