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/*
* -*- Mode:Vala; indent-tabs-mode:t; tab-width:4; encoding:utf8 -*-
* Copyright 2016 Canonical Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 3.
*
* 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/>.
*
* Authors:
* Xavi Garcia <xavi.garcia.mena@canonical.com>
*/
using PulseAudio;
using Notify;
using Gee;
[DBus (name="com.canonical.UnityGreeter.List")]
interface GreeterListInterfaceAccess : Object
{
public abstract async string get_active_entry () throws IOError;
public signal void entry_selected (string entry_name);
}
public class AccountsServiceAccess : Object
{
private DBusProxy _user_proxy;
private GreeterListInterfaceAccess _greeter_proxy;
private double _volume = 0.0;
private string _last_running_player = "";
private bool _mute = false;
private Cancellable _dbus_call_cancellable;
public AccountsServiceAccess ()
{
_dbus_call_cancellable = new Cancellable ();
setup_accountsservice.begin ();
}
~AccountsServiceAccess ()
{
_dbus_call_cancellable.cancel ();
}
public string last_running_player
{
get
{
return _last_running_player;
}
set
{
sync_last_running_player_to_accountsservice.begin (value);
}
}
public bool mute
{
get
{
return _mute;
}
set
{
sync_mute_to_accountsservice.begin (value);
}
}
public double volume
{
get
{
return _volume;
}
set
{
sync_volume_to_accountsservice.begin (value);
}
}
/* AccountsService operations */
private void accountsservice_props_changed_cb (DBusProxy proxy, Variant changed_properties, string[]? invalidated_properties)
{
Variant volume_variant = changed_properties.lookup_value ("Volume", VariantType.DOUBLE);
if (volume_variant != null) {
var volume = volume_variant.get_double ();
if (volume >= 0 && _volume != volume) {
_volume = volume;
this.notify_property("volume");
}
}
Variant mute_variant = changed_properties.lookup_value ("Muted", VariantType.BOOLEAN);
if (mute_variant != null) {
_mute = mute_variant.get_boolean ();
this.notify_property("mute");
}
Variant last_running_player_variant = changed_properties.lookup_value ("LastRunningPlayer", VariantType.STRING);
if (last_running_player_variant != null) {
_last_running_player = last_running_player_variant.get_string ();
this.notify_property("last-running-player");
}
}
private async void setup_user_proxy (string? username_in = null)
{
var username = username_in;
_user_proxy = null;
// Look up currently selected greeter user, if asked
if (username == null) {
try {
username = yield _greeter_proxy.get_active_entry ();
if (username == "" || username == null)
return;
} catch (GLib.Error e) {
warning ("unable to find Accounts path for user %s: %s", username == null ? "null" : username, e.message);
return;
}
}
// Get master AccountsService object
DBusProxy accounts_proxy;
try {
accounts_proxy = yield DBusProxy.create_for_bus (BusType.SYSTEM, DBusProxyFlags.DO_NOT_LOAD_PROPERTIES | DBusProxyFlags.DO_NOT_CONNECT_SIGNALS, null, "org.freedesktop.Accounts", "/org/freedesktop/Accounts", "org.freedesktop.Accounts");
} catch (GLib.Error e) {
warning ("unable to get greeter proxy: %s", e.message);
return;
}
// Find user's AccountsService object
try {
var user_path_variant = yield accounts_proxy.call ("FindUserByName", new Variant ("(s)", username), DBusCallFlags.NONE, -1);
string user_path;
if (user_path_variant.check_format_string ("(o)", true)) {
user_path_variant.get ("(o)", out user_path);
_user_proxy = yield DBusProxy.create_for_bus (BusType.SYSTEM, DBusProxyFlags.GET_INVALIDATED_PROPERTIES, null, "org.freedesktop.Accounts", user_path, "com.ubuntu.AccountsService.Sound");
} else {
warning ("Unable to find user name after calling FindUserByName. Expected type: %s and obtained %s", "(o)", user_path_variant.get_type_string () );
return;
}
} catch (GLib.Error e) {
warning ("unable to find Accounts path for user %s: %s", username, e.message);
return;
}
// Get current values and listen for changes
_user_proxy.g_properties_changed.connect (accountsservice_props_changed_cb);
try {
var props_variant = yield _user_proxy.get_connection ().call (_user_proxy.get_name (), _user_proxy.get_object_path (), "org.freedesktop.DBus.Properties", "GetAll", new Variant ("(s)", _user_proxy.get_interface_name ()), null, DBusCallFlags.NONE, -1);
if (props_variant.check_format_string ("(@a{sv})", true)) {
Variant props;
props_variant.get ("(@a{sv})", out props);
accountsservice_props_changed_cb(_user_proxy, props, null);
} else {
warning ("Unable to get accounts service properties after calling GetAll. Expected type: %s and obtained %s", "(@a{sv})", props_variant.get_type_string () );
return;
}
} catch (GLib.Error e) {
debug("Unable to get properties for user %s at first try: %s", username, e.message);
}
}
private void greeter_user_changed (string username)
{
setup_user_proxy.begin (username);
}
private async void setup_accountsservice ()
{
if (Environment.get_variable ("XDG_SESSION_CLASS") == "greeter") {
try {
_greeter_proxy = yield Bus.get_proxy (BusType.SESSION, "com.canonical.UnityGreeter", "/list");
} catch (GLib.Error e) {
warning ("unable to get greeter proxy: %s", e.message);
return;
}
_greeter_proxy.entry_selected.connect (greeter_user_changed);
yield setup_user_proxy ();
} else {
// We are in a user session. We just need our own proxy
unowned string username = Environment.get_variable ("USER");
if (username != null && username != "") {
yield setup_user_proxy (username);
}
}
}
private async void sync_last_running_player_to_accountsservice (string last_running_player)
{
if (_user_proxy == null)
return;
try {
yield _user_proxy.get_connection ().call (_user_proxy.get_name (), _user_proxy.get_object_path (), "org.freedesktop.DBus.Properties", "Set", new Variant ("(ssv)", _user_proxy.get_interface_name (), "LastRunningPlayer", new Variant ("s", last_running_player)), null, DBusCallFlags.NONE, -1, _dbus_call_cancellable);
} catch (GLib.Error e) {
warning ("unable to sync last running player %s to AccountsService: %s",last_running_player, e.message);
}
_last_running_player = last_running_player;
}
private async void sync_volume_to_accountsservice (double volume)
{
if (_user_proxy == null)
return;
try {
yield _user_proxy.get_connection ().call (_user_proxy.get_name (), _user_proxy.get_object_path (), "org.freedesktop.DBus.Properties", "Set", new Variant ("(ssv)", _user_proxy.get_interface_name (), "Volume", new Variant ("d", volume)), null, DBusCallFlags.NONE, -1, _dbus_call_cancellable);
} catch (GLib.Error e) {
warning ("unable to sync volume %f to AccountsService: %s", volume, e.message);
}
}
private async void sync_mute_to_accountsservice (bool mute)
{
if (_user_proxy == null)
return;
try {
yield _user_proxy.get_connection ().call (_user_proxy.get_name (), _user_proxy.get_object_path (), "org.freedesktop.DBus.Properties", "Set", new Variant ("(ssv)", _user_proxy.get_interface_name (), "Muted", new Variant ("b", mute)), null, DBusCallFlags.NONE, -1, _dbus_call_cancellable);
} catch (GLib.Error e) {
warning ("unable to sync mute %s to AccountsService: %s", mute ? "true" : "false", e.message);
}
}
}
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