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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
/* exported canLock, getLoginManager, registerSessionWithGDM */
const { GLib, Gio } = imports.gi;
const Signals = imports.signals;
const { loadInterfaceXML } = imports.misc.fileUtils;
const SystemdLoginManagerIface = loadInterfaceXML('org.freedesktop.login1.Manager');
const SystemdLoginSessionIface = loadInterfaceXML('org.freedesktop.login1.Session');
const SystemdLoginUserIface = loadInterfaceXML('org.freedesktop.login1.User');
const SystemdLoginManager = Gio.DBusProxy.makeProxyWrapper(SystemdLoginManagerIface);
const SystemdLoginSession = Gio.DBusProxy.makeProxyWrapper(SystemdLoginSessionIface);
const SystemdLoginUser = Gio.DBusProxy.makeProxyWrapper(SystemdLoginUserIface);
function haveSystemd() {
return GLib.access("/run/systemd/seats", 0) >= 0;
}
function versionCompare(required, reference) {
required = required.split('.');
reference = reference.split('.');
for (let i = 0; i < required.length; i++) {
let requiredInt = parseInt(required[i]);
let referenceInt = parseInt(reference[i]);
if (requiredInt != referenceInt)
return requiredInt < referenceInt;
}
return true;
}
function canLock() {
try {
let params = GLib.Variant.new('(ss)', ['org.gnome.DisplayManager.Manager', 'Version']);
let result = Gio.DBus.system.call_sync('org.gnome.DisplayManager',
'/org/gnome/DisplayManager/Manager',
'org.freedesktop.DBus.Properties',
'Get', params, null,
Gio.DBusCallFlags.NONE,
-1, null);
let version = result.deep_unpack()[0].deep_unpack();
return haveSystemd() && versionCompare('3.5.91', version);
} catch (e) {
return false;
}
}
async function registerSessionWithGDM() {
log("Registering session with GDM");
try {
await Gio.DBus.system.call(
'org.gnome.DisplayManager',
'/org/gnome/DisplayManager/Manager',
'org.gnome.DisplayManager.Manager',
'RegisterSession',
GLib.Variant.new('(a{sv})', [{}]), null,
Gio.DBusCallFlags.NONE, -1, null);
} catch (e) {
if (!e.matches(Gio.DBusError, Gio.DBusError.UNKNOWN_METHOD))
log(`Error registering session with GDM: ${e.message}`);
else
log('Not calling RegisterSession(): method not exported, GDM too old?');
}
}
let _loginManager = null;
/**
* getLoginManager:
* An abstraction over systemd/logind and ConsoleKit.
* @returns {object} - the LoginManager singleton
*
*/
function getLoginManager() {
if (_loginManager == null) {
if (haveSystemd())
_loginManager = new LoginManagerSystemd();
else
_loginManager = new LoginManagerDummy();
}
return _loginManager;
}
var LoginManagerSystemd = class {
constructor() {
this._proxy = new SystemdLoginManager(Gio.DBus.system,
'org.freedesktop.login1',
'/org/freedesktop/login1');
this._userProxy = new SystemdLoginUser(Gio.DBus.system,
'org.freedesktop.login1',
'/org/freedesktop/login1/user/self');
this._proxy.connectSignal('PrepareForSleep',
this._prepareForSleep.bind(this));
}
getCurrentSessionProxy(callback) {
if (this._currentSession) {
callback(this._currentSession);
return;
}
let sessionId = GLib.getenv('XDG_SESSION_ID');
if (!sessionId) {
log('Unset XDG_SESSION_ID, getCurrentSessionProxy() called outside a user session. Asking logind directly.');
let [session, objectPath] = this._userProxy.Display;
if (session) {
log(`Will monitor session ${session}`);
sessionId = session;
} else {
log('Failed to find "Display" session; are we the greeter?');
for ([session, objectPath] of this._userProxy.Sessions) {
let sessionProxy = new SystemdLoginSession(Gio.DBus.system,
'org.freedesktop.login1',
objectPath);
log(`Considering ${session}, class=${sessionProxy.Class}`);
if (sessionProxy.Class == 'greeter') {
log(`Yes, will monitor session ${session}`);
sessionId = session;
break;
}
}
if (!sessionId) {
log('No, failed to get session from logind.');
return;
}
}
}
this._proxy.GetSessionRemote(sessionId, (result, error) => {
if (error) {
logError(error, 'Could not get a proxy for the current session');
} else {
this._currentSession = new SystemdLoginSession(Gio.DBus.system,
'org.freedesktop.login1',
result[0]);
callback(this._currentSession);
}
});
}
canSuspend(asyncCallback) {
this._proxy.CanSuspendRemote((result, error) => {
if (error) {
asyncCallback(false, false);
} else {
let needsAuth = result[0] == 'challenge';
let canSuspend = needsAuth || result[0] == 'yes';
asyncCallback(canSuspend, needsAuth);
}
});
}
canRebootToBootLoaderMenu(asyncCallback) {
this._proxy.CanRebootToBootLoaderMenuRemote((result, error) => {
if (error) {
asyncCallback(false, false);
} else {
const needsAuth = result[0] === 'challenge';
const canRebootToBootLoaderMenu = needsAuth || result[0] === 'yes';
asyncCallback(canRebootToBootLoaderMenu, needsAuth);
}
});
}
setRebootToBootLoaderMenu() {
/* Parameter is timeout in usec, show to menu for 60 seconds */
this._proxy.SetRebootToBootLoaderMenuRemote(60000000);
}
listSessions(asyncCallback) {
this._proxy.ListSessionsRemote((result, error) => {
if (error)
asyncCallback([]);
else
asyncCallback(result[0]);
});
}
suspend() {
this._proxy.SuspendRemote(true);
}
async inhibit(reason, callback) {
try {
const inVariant = new GLib.Variant('(ssss)',
['sleep', 'GNOME Shell', reason, 'delay']);
const [outVariant_, fdList] =
await this._proxy.call_with_unix_fd_list('Inhibit',
inVariant, 0, -1, null, null);
const [fd] = fdList.steal_fds();
callback(new Gio.UnixInputStream({ fd }));
} catch (e) {
logError(e, 'Error getting systemd inhibitor');
callback(null);
}
}
_prepareForSleep(proxy, sender, [aboutToSuspend]) {
this.emit('prepare-for-sleep', aboutToSuspend);
}
};
Signals.addSignalMethods(LoginManagerSystemd.prototype);
var LoginManagerDummy = class {
getCurrentSessionProxy(_callback) {
// we could return a DummySession object that fakes whatever callers
// expect (at the time of writing: connect() and connectSignal()
// methods), but just never calling the callback should be safer
}
canSuspend(asyncCallback) {
asyncCallback(false, false);
}
canRebootToBootLoaderMenu(asyncCallback) {
asyncCallback(false, false);
}
setRebootToBootLoaderMenu() {
}
listSessions(asyncCallback) {
asyncCallback([]);
}
suspend() {
this.emit('prepare-for-sleep', true);
this.emit('prepare-for-sleep', false);
}
inhibit(reason, callback) {
callback(null);
}
};
Signals.addSignalMethods(LoginManagerDummy.prototype);
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