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Diffstat (limited to 'js/misc/loginManager.js')
| -rw-r--r-- | js/misc/loginManager.js | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/js/misc/loginManager.js b/js/misc/loginManager.js new file mode 100644 index 0000000..55e9289 --- /dev/null +++ b/js/misc/loginManager.js @@ -0,0 +1,243 @@ +// -*- 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); |