36fba1a184
In case a background service such as the fingerprint authentication
fails to start we'd just mark the whole authentication process as
failed.
Currently this may happen by just putting a wrong password when an user
has some fingerprints enrolled, the fingerprint gdm authentication
worker may take some time to restart leading to a failure and this is
currently also making the password authentication to fail:
JS ERROR: Failed to start gdm-fingerprint for u: Gio.DBusError:
GDBus.Error:org.freedesktop.DBus.Error.Spawn.Failed:
Could not create authentication helper process
_promisify/proto[asyncFunc]/</<@resource:///org/gnome/gjs/modules/core/overrides/Gio.js:435:45
### Promise created here: ###
_startService@resource:///org/gnome/shell/gdm/util.js:470:42
_beginVerification@resource:///org/gnome/shell/gdm/util.js:495:18
_getUserVerifier@resource:///org/gnome/shell/gdm/util.js:405:14
async*_openReauthenticationChannel@resource:///org/gnome/shell/gdm/util.js:378:22
async*begin@resource:///org/gnome/shell/gdm/util.js:194:18
_retry@resource:///org/gnome/shell/gdm/util.js:561:14
_verificationFailed/signalId<@resource:///org/gnome/shell/gdm/util.js:584:30
_emit@resource:///org/gnome/gjs/modules/core/_signals.js:133:47
finishMessageQueue@resource:///org/gnome/shell/gdm/util.js:268:14
_queueMessageTimeout@resource:///org/gnome/shell/gdm/util.js:273:18
_queueMessageTimeout/this._messageQueueTimeoutId<@resource:///org/gnome/shell/gdm/util.js:288:65
Given that background services are ignored even for queries or any kind
of message, we should not fail the authentication request unless the
default service fails.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1622>
659 lines
22 KiB
JavaScript
659 lines
22 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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/* exported BANNER_MESSAGE_KEY, BANNER_MESSAGE_TEXT_KEY, LOGO_KEY,
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DISABLE_USER_LIST_KEY, fadeInActor, fadeOutActor, cloneAndFadeOutActor */
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const { Clutter, Gdm, Gio, GLib } = imports.gi;
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const Signals = imports.signals;
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const Batch = imports.gdm.batch;
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const OVirt = imports.gdm.oVirt;
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const Vmware = imports.gdm.vmware;
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const Main = imports.ui.main;
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const { loadInterfaceXML } = imports.misc.fileUtils;
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const Params = imports.misc.params;
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const SmartcardManager = imports.misc.smartcardManager;
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const FprintManagerIface = loadInterfaceXML('net.reactivated.Fprint.Manager');
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const FprintManagerProxy = Gio.DBusProxy.makeProxyWrapper(FprintManagerIface);
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const FprintDeviceIface = loadInterfaceXML('net.reactivated.Fprint.Device');
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const FprintDeviceProxy = Gio.DBusProxy.makeProxyWrapper(FprintDeviceIface);
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Gio._promisify(Gdm.Client.prototype,
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'open_reauthentication_channel', 'open_reauthentication_channel_finish');
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Gio._promisify(Gdm.Client.prototype,
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'get_user_verifier', 'get_user_verifier_finish');
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Gio._promisify(Gdm.UserVerifierProxy.prototype,
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'call_begin_verification_for_user', 'call_begin_verification_for_user_finish');
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Gio._promisify(Gdm.UserVerifierProxy.prototype,
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'call_begin_verification', 'call_begin_verification_finish');
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var PASSWORD_SERVICE_NAME = 'gdm-password';
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var FINGERPRINT_SERVICE_NAME = 'gdm-fingerprint';
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var SMARTCARD_SERVICE_NAME = 'gdm-smartcard';
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var FADE_ANIMATION_TIME = 160;
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var CLONE_FADE_ANIMATION_TIME = 250;
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var LOGIN_SCREEN_SCHEMA = 'org.gnome.login-screen';
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var PASSWORD_AUTHENTICATION_KEY = 'enable-password-authentication';
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var FINGERPRINT_AUTHENTICATION_KEY = 'enable-fingerprint-authentication';
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var SMARTCARD_AUTHENTICATION_KEY = 'enable-smartcard-authentication';
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var BANNER_MESSAGE_KEY = 'banner-message-enable';
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var BANNER_MESSAGE_TEXT_KEY = 'banner-message-text';
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var ALLOWED_FAILURES_KEY = 'allowed-failures';
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var LOGO_KEY = 'logo';
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var DISABLE_USER_LIST_KEY = 'disable-user-list';
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// Give user 48ms to read each character of a PAM message
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var USER_READ_TIME = 48;
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var MessageType = {
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NONE: 0,
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ERROR: 1,
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INFO: 2,
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HINT: 3,
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};
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const FingerprintReaderType = {
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NONE: 0,
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PRESS: 1,
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SWIPE: 2,
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};
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function fadeInActor(actor) {
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if (actor.opacity == 255 && actor.visible)
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return null;
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let hold = new Batch.Hold();
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actor.show();
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let [, naturalHeight] = actor.get_preferred_height(-1);
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actor.opacity = 0;
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actor.set_height(0);
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actor.ease({
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opacity: 255,
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height: naturalHeight,
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duration: FADE_ANIMATION_TIME,
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mode: Clutter.AnimationMode.EASE_OUT_QUAD,
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onComplete: () => {
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this.set_height(-1);
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hold.release();
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},
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});
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return hold;
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}
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function fadeOutActor(actor) {
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if (!actor.visible || actor.opacity == 0) {
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actor.opacity = 0;
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actor.hide();
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return null;
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}
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let hold = new Batch.Hold();
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actor.ease({
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opacity: 0,
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height: 0,
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duration: FADE_ANIMATION_TIME,
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mode: Clutter.AnimationMode.EASE_OUT_QUAD,
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onComplete: () => {
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this.hide();
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this.set_height(-1);
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hold.release();
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},
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});
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return hold;
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}
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function cloneAndFadeOutActor(actor) {
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// Immediately hide actor so its sibling can have its space
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// and position, but leave a non-reactive clone on-screen,
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// so from the user's point of view it smoothly fades away
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// and reveals its sibling.
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actor.hide();
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let clone = new Clutter.Clone({ source: actor,
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reactive: false });
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Main.uiGroup.add_child(clone);
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let [x, y] = actor.get_transformed_position();
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clone.set_position(x, y);
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let hold = new Batch.Hold();
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clone.ease({
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opacity: 0,
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duration: CLONE_FADE_ANIMATION_TIME,
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mode: Clutter.AnimationMode.EASE_OUT_QUAD,
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onComplete: () => {
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clone.destroy();
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hold.release();
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},
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});
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return hold;
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}
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var ShellUserVerifier = class {
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constructor(client, params) {
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params = Params.parse(params, { reauthenticationOnly: false });
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this._reauthOnly = params.reauthenticationOnly;
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this._client = client;
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this._defaultService = null;
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this._preemptingService = null;
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this._settings = new Gio.Settings({ schema_id: LOGIN_SCREEN_SCHEMA });
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this._settings.connect('changed',
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this._updateDefaultService.bind(this));
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this._updateDefaultService();
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this._fprintManager = new FprintManagerProxy(Gio.DBus.system,
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'net.reactivated.Fprint',
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'/net/reactivated/Fprint/Manager',
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null,
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null,
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Gio.DBusProxyFlags.DO_NOT_LOAD_PROPERTIES);
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this._smartcardManager = SmartcardManager.getSmartcardManager();
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// We check for smartcards right away, since an inserted smartcard
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// at startup should result in immediately initiating authentication.
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// This is different than fingerprint readers, where we only check them
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// after a user has been picked.
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this.smartcardDetected = false;
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this._checkForSmartcard();
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this._smartcardInsertedId = this._smartcardManager.connect('smartcard-inserted',
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this._checkForSmartcard.bind(this));
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this._smartcardRemovedId = this._smartcardManager.connect('smartcard-removed',
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this._checkForSmartcard.bind(this));
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this._messageQueue = [];
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this._messageQueueTimeoutId = 0;
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this.hasPendingMessages = false;
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this.reauthenticating = false;
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this._failCounter = 0;
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this._credentialManagers = {};
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this._credentialManagers[OVirt.SERVICE_NAME] = OVirt.getOVirtCredentialsManager();
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this._credentialManagers[Vmware.SERVICE_NAME] = Vmware.getVmwareCredentialsManager();
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for (let service in this._credentialManagers) {
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if (this._credentialManagers[service].token) {
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this._onCredentialManagerAuthenticated(this._credentialManagers[service],
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this._credentialManagers[service].token);
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}
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this._credentialManagers[service]._authenticatedSignalId =
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this._credentialManagers[service].connect('user-authenticated',
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this._onCredentialManagerAuthenticated.bind(this));
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}
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}
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get allowedFailures() {
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return this._settings.get_int(ALLOWED_FAILURES_KEY);
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}
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begin(userName, hold) {
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this._cancellable = new Gio.Cancellable();
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this._hold = hold;
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this._userName = userName;
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this.reauthenticating = false;
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this._checkForFingerprintReader();
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// If possible, reauthenticate an already running session,
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// so any session specific credentials get updated appropriately
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if (userName)
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this._openReauthenticationChannel(userName);
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else
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this._getUserVerifier();
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}
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cancel() {
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if (this._cancellable)
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this._cancellable.cancel();
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if (this._userVerifier) {
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this._userVerifier.call_cancel_sync(null);
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this.clear();
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}
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}
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_clearUserVerifier() {
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if (this._userVerifier) {
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this._disconnectSignals();
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this._userVerifier.run_dispose();
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this._userVerifier = null;
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}
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}
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clear() {
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if (this._cancellable) {
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this._cancellable.cancel();
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this._cancellable = null;
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}
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this._clearUserVerifier();
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this._clearMessageQueue();
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}
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destroy() {
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this.cancel();
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this._settings.run_dispose();
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this._settings = null;
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this._smartcardManager.disconnect(this._smartcardInsertedId);
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this._smartcardManager.disconnect(this._smartcardRemovedId);
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this._smartcardManager = null;
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for (let service in this._credentialManagers) {
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let credentialManager = this._credentialManagers[service];
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credentialManager.disconnect(credentialManager._authenticatedSignalId);
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credentialManager = null;
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}
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}
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answerQuery(serviceName, answer) {
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if (!this.hasPendingMessages) {
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this._userVerifier.call_answer_query(serviceName, answer, this._cancellable, null);
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} else {
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const cancellable = this._cancellable;
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let signalId = this.connect('no-more-messages', () => {
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this.disconnect(signalId);
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if (!cancellable.is_cancelled())
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this._userVerifier.call_answer_query(serviceName, answer, cancellable, null);
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});
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}
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}
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_getIntervalForMessage(message) {
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// We probably could be smarter here
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return message.length * USER_READ_TIME;
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}
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finishMessageQueue() {
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if (!this.hasPendingMessages)
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return;
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this._messageQueue = [];
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this.hasPendingMessages = false;
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this.emit('no-more-messages');
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}
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_queueMessageTimeout() {
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if (this._messageQueue.length == 0) {
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this.finishMessageQueue();
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return;
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}
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if (this._messageQueueTimeoutId != 0)
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return;
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let message = this._messageQueue.shift();
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this.emit('show-message', message.text, message.type);
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this._messageQueueTimeoutId = GLib.timeout_add(GLib.PRIORITY_DEFAULT,
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message.interval,
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() => {
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this._messageQueueTimeoutId = 0;
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this._queueMessageTimeout();
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return GLib.SOURCE_REMOVE;
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});
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GLib.Source.set_name_by_id(this._messageQueueTimeoutId, '[gnome-shell] this._queueMessageTimeout');
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}
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_queueMessage(message, messageType) {
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let interval = this._getIntervalForMessage(message);
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this.hasPendingMessages = true;
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this._messageQueue.push({ text: message, type: messageType, interval });
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this._queueMessageTimeout();
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}
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_clearMessageQueue() {
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this.finishMessageQueue();
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if (this._messageQueueTimeoutId != 0) {
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GLib.source_remove(this._messageQueueTimeoutId);
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this._messageQueueTimeoutId = 0;
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}
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this.emit('show-message', null, MessageType.NONE);
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}
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_checkForFingerprintReader() {
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this._fingerprintReaderType = FingerprintReaderType.NONE;
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if (!this._settings.get_boolean(FINGERPRINT_AUTHENTICATION_KEY) ||
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this._fprintManager == null) {
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this._updateDefaultService();
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return;
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}
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this._fprintManager.GetDefaultDeviceRemote(Gio.DBusCallFlags.NONE, this._cancellable,
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(params, error) => {
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if (!error && params) {
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const [device] = params;
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const fprintDeviceProxy = new FprintDeviceProxy(Gio.DBus.system,
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'net.reactivated.Fprint',
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device);
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const fprintDeviceType = fprintDeviceProxy['scan-type'];
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this._fingerprintReaderType = fprintDeviceType === 'swipe'
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? FingerprintReaderType.SWIPE
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: FingerprintReaderType.PRESS;
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this._updateDefaultService();
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}
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});
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}
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_onCredentialManagerAuthenticated(credentialManager, _token) {
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this._preemptingService = credentialManager.service;
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this.emit('credential-manager-authenticated');
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}
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_checkForSmartcard() {
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let smartcardDetected;
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if (!this._settings.get_boolean(SMARTCARD_AUTHENTICATION_KEY))
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smartcardDetected = false;
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else if (this._reauthOnly)
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smartcardDetected = this._smartcardManager.hasInsertedLoginToken();
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else
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smartcardDetected = this._smartcardManager.hasInsertedTokens();
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if (smartcardDetected != this.smartcardDetected) {
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this.smartcardDetected = smartcardDetected;
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if (this.smartcardDetected)
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this._preemptingService = SMARTCARD_SERVICE_NAME;
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else if (this._preemptingService == SMARTCARD_SERVICE_NAME)
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this._preemptingService = null;
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this.emit('smartcard-status-changed');
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}
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}
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_reportInitError(where, error) {
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logError(error, where);
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this._hold.release();
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this._queueMessage(_("Authentication error"), MessageType.ERROR);
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this._verificationFailed(false);
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}
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async _openReauthenticationChannel(userName) {
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try {
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this._clearUserVerifier();
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this._userVerifier = await this._client.open_reauthentication_channel(
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userName, this._cancellable);
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} catch (e) {
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if (e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.CANCELLED))
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return;
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if (e.matches(Gio.DBusError, Gio.DBusError.ACCESS_DENIED) &&
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!this._reauthOnly) {
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// Gdm emits org.freedesktop.DBus.Error.AccessDenied when there
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// is no session to reauthenticate. Fall back to performing
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// verification from this login session
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this._getUserVerifier();
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return;
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}
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this._reportInitError('Failed to open reauthentication channel', e);
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return;
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}
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this.reauthenticating = true;
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this._connectSignals();
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this._beginVerification();
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this._hold.release();
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}
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async _getUserVerifier() {
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try {
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this._clearUserVerifier();
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this._userVerifier =
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await this._client.get_user_verifier(this._cancellable);
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} catch (e) {
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if (e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.CANCELLED))
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return;
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this._reportInitError('Failed to obtain user verifier', e);
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return;
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}
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this._connectSignals();
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this._beginVerification();
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this._hold.release();
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}
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_connectSignals() {
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this._disconnectSignals();
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this._signalIds = [];
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let id = this._userVerifier.connect('info', this._onInfo.bind(this));
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this._signalIds.push(id);
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id = this._userVerifier.connect('problem', this._onProblem.bind(this));
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this._signalIds.push(id);
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id = this._userVerifier.connect('info-query', this._onInfoQuery.bind(this));
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this._signalIds.push(id);
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id = this._userVerifier.connect('secret-info-query', this._onSecretInfoQuery.bind(this));
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this._signalIds.push(id);
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id = this._userVerifier.connect('conversation-stopped', this._onConversationStopped.bind(this));
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this._signalIds.push(id);
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id = this._userVerifier.connect('reset', this._onReset.bind(this));
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this._signalIds.push(id);
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id = this._userVerifier.connect('verification-complete', this._onVerificationComplete.bind(this));
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this._signalIds.push(id);
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}
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_disconnectSignals() {
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if (!this._signalIds || !this._userVerifier)
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return;
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this._signalIds.forEach(s => this._userVerifier.disconnect(s));
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this._signalIds = [];
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}
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|
_getForegroundService() {
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if (this._preemptingService)
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return this._preemptingService;
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return this._defaultService;
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}
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|
|
serviceIsForeground(serviceName) {
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return serviceName == this._getForegroundService();
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}
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|
serviceIsDefault(serviceName) {
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|
return serviceName == this._defaultService;
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|
}
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|
|
_updateDefaultService() {
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|
if (this._settings.get_boolean(PASSWORD_AUTHENTICATION_KEY))
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|
this._defaultService = PASSWORD_SERVICE_NAME;
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|
else if (this._settings.get_boolean(SMARTCARD_AUTHENTICATION_KEY))
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|
this._defaultService = SMARTCARD_SERVICE_NAME;
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|
else if (this._fingerprintReaderType !== FingerprintReaderType.NONE)
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|
this._defaultService = FINGERPRINT_SERVICE_NAME;
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|
if (!this._defaultService) {
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|
log("no authentication service is enabled, using password authentication");
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|
this._defaultService = PASSWORD_SERVICE_NAME;
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}
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|
}
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|
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async _startService(serviceName) {
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|
this._hold.acquire();
|
|
try {
|
|
if (this._userName) {
|
|
await this._userVerifier.call_begin_verification_for_user(
|
|
serviceName, this._userName, this._cancellable);
|
|
} else {
|
|
await this._userVerifier.call_begin_verification(
|
|
serviceName, this._cancellable);
|
|
}
|
|
} catch (e) {
|
|
if (e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.CANCELLED))
|
|
return;
|
|
if (!this.serviceIsForeground(serviceName)) {
|
|
logError(e, 'Failed to start %s for %s'.format(serviceName, this._userName));
|
|
this._hold.release();
|
|
return;
|
|
}
|
|
this._reportInitError(this._userName
|
|
? 'Failed to start verification for user'
|
|
: 'Failed to start verification', e);
|
|
return;
|
|
}
|
|
this._hold.release();
|
|
}
|
|
|
|
_beginVerification() {
|
|
this._startService(this._getForegroundService());
|
|
|
|
if (this._userName &&
|
|
this._fingerprintReaderType !== FingerprintReaderType.NONE &&
|
|
!this.serviceIsForeground(FINGERPRINT_SERVICE_NAME))
|
|
this._startService(FINGERPRINT_SERVICE_NAME);
|
|
}
|
|
|
|
_onInfo(client, serviceName, info) {
|
|
if (this.serviceIsForeground(serviceName)) {
|
|
this._queueMessage(info, MessageType.INFO);
|
|
} else if (serviceName == FINGERPRINT_SERVICE_NAME &&
|
|
this._fingerprintReaderType !== FingerprintReaderType.NONE) {
|
|
// We don't show fingerprint messages directly since it's
|
|
// not the main auth service. Instead we use the messages
|
|
// as a cue to display our own message.
|
|
if (this._fingerprintReaderType === FingerprintReaderType.SWIPE) {
|
|
// Translators: this message is shown below the password entry field
|
|
// to indicate the user can swipe their finger on the fingerprint reader
|
|
this._queueMessage(_('(or swipe finger across reader)'), MessageType.HINT);
|
|
} else {
|
|
// Translators: this message is shown below the password entry field
|
|
// to indicate the user can place their finger on the fingerprint reader instead
|
|
this._queueMessage(_('(or place finger on reader)'), MessageType.HINT);
|
|
}
|
|
}
|
|
}
|
|
|
|
_onProblem(client, serviceName, problem) {
|
|
if (!this.serviceIsForeground(serviceName))
|
|
return;
|
|
|
|
this._queueMessage(problem, MessageType.ERROR);
|
|
}
|
|
|
|
_onInfoQuery(client, serviceName, question) {
|
|
if (!this.serviceIsForeground(serviceName))
|
|
return;
|
|
|
|
this.emit('ask-question', serviceName, question, false);
|
|
}
|
|
|
|
_onSecretInfoQuery(client, serviceName, secretQuestion) {
|
|
if (!this.serviceIsForeground(serviceName))
|
|
return;
|
|
|
|
let token = null;
|
|
if (this._credentialManagers[serviceName])
|
|
token = this._credentialManagers[serviceName].token;
|
|
|
|
if (token) {
|
|
this.answerQuery(serviceName, token);
|
|
return;
|
|
}
|
|
|
|
this.emit('ask-question', serviceName, secretQuestion, true);
|
|
}
|
|
|
|
_onReset() {
|
|
// Clear previous attempts to authenticate
|
|
this._failCounter = 0;
|
|
this._updateDefaultService();
|
|
|
|
this.emit('reset');
|
|
}
|
|
|
|
_onVerificationComplete() {
|
|
this.emit('verification-complete');
|
|
}
|
|
|
|
_cancelAndReset() {
|
|
this.cancel();
|
|
this._onReset();
|
|
}
|
|
|
|
_retry() {
|
|
this.begin(this._userName, new Batch.Hold());
|
|
}
|
|
|
|
_verificationFailed(retry) {
|
|
// For Not Listed / enterprise logins, immediately reset
|
|
// the dialog
|
|
// Otherwise, when in login mode we allow ALLOWED_FAILURES attempts.
|
|
// After that, we go back to the welcome screen.
|
|
|
|
this._failCounter++;
|
|
let canRetry = retry && this._userName &&
|
|
(this._reauthOnly ||
|
|
this._failCounter < this._settings.get_int(ALLOWED_FAILURES_KEY));
|
|
|
|
this._disconnectSignals();
|
|
|
|
if (canRetry) {
|
|
if (!this.hasPendingMessages) {
|
|
this._retry();
|
|
} else {
|
|
const cancellable = this._cancellable;
|
|
let signalId = this.connect('no-more-messages', () => {
|
|
this.disconnect(signalId);
|
|
if (!cancellable.is_cancelled())
|
|
this._retry();
|
|
});
|
|
}
|
|
} else {
|
|
// eslint-disable-next-line no-lonely-if
|
|
if (!this.hasPendingMessages) {
|
|
this._cancelAndReset();
|
|
} else {
|
|
const cancellable = this._cancellable;
|
|
let signalId = this.connect('no-more-messages', () => {
|
|
this.disconnect(signalId);
|
|
if (!cancellable.is_cancelled())
|
|
this._cancelAndReset();
|
|
});
|
|
}
|
|
}
|
|
|
|
this.emit('verification-failed', canRetry);
|
|
}
|
|
|
|
_onConversationStopped(client, serviceName) {
|
|
// If the login failed with the preauthenticated oVirt credentials
|
|
// then discard the credentials and revert to default authentication
|
|
// mechanism.
|
|
let foregroundService = Object.keys(this._credentialManagers).find(service =>
|
|
this.serviceIsForeground(service));
|
|
if (foregroundService) {
|
|
this._credentialManagers[foregroundService].token = null;
|
|
this._preemptingService = null;
|
|
this._verificationFailed(false);
|
|
return;
|
|
}
|
|
|
|
// if the password service fails, then cancel everything.
|
|
// But if, e.g., fingerprint fails, still give
|
|
// password authentication a chance to succeed
|
|
if (this.serviceIsForeground(serviceName))
|
|
this._verificationFailed(true);
|
|
}
|
|
};
|
|
Signals.addSignalMethods(ShellUserVerifier.prototype);
|