allow users to enable/disable U2F via their personal settings

appinfo/routes.php

@@ -19,16 +19,26 @@
  *
  */
 return [
-    'routes' => [
-        [
-            'name' => 'settings#startRegister',
-            'url' => '/settings/startregister',
-            'verb' => 'POST'
-        ],
-	[
-            'name' => 'settings#finishRegister',
-            'url' => '/settings/finishregister',
-            'verb' => 'POST'
-        ],
-    ]
+	'routes' => [
+		[
+			'name' => 'settings#state',
+			'url' => '/settings/state',
+			'verb' => 'GET'
+		],
+		[
+			'name' => 'settings#disable',
+			'url' => '/settings/disable',
+			'verb' => 'POST'
+		],
+		[
+			'name' => 'settings#startRegister',
+			'url' => '/settings/startregister',
+			'verb' => 'POST'
+		],
+		[
+			'name' => 'settings#finishRegister',
+			'url' => '/settings/finishregister',
+			'verb' => 'POST'
+		],
+	]
 ];

js/settingsview.js

@@ -1,49 +1,107 @@
 /* global Backbone, Handlebars, OC, u2f */
 
-(function (OC, Backbone, Handlebars, $, u2f) {
+(function(OC, Backbone, Handlebars, $, u2f) {
 	'use strict';
 
 	OC.Settings = OC.Settings || {};
 	OC.Settings.TwoFactorU2F = OC.Settings.TwoFactorU2F || {};
 
 	var TEMPLATE = '<div>'
-		+ '	<button id="u2f-register">Register</button>'
+		+ '	<input type="checkbox" class="checkbox" id="u2f-enabled" {{#if enabled}}checked{{/if}}>'
+		+ '	<label for="u2f-enabled">' + t('twofactor_u2f', 'Use U2F device') + '</label>'
 		+ '</div>';
 
 	var View = Backbone.View.extend({
-		template: Handlebars.compile(TEMPLATE),
+		_template: undefined,
+		_enabled: undefined,
+		template: function(data) {
+			if (!this._template) {
+				this._template = Handlebars.compile(TEMPLATE);
+			}
+			return this._template(data);
+		},
 		events: {
-			'click #u2f-register': 'onRegister'
+			'change #u2f-enabled': '_onToggleEnabled',
 		},
-		initialize: function () {
+		initialize: function() {
+			this._load();
+		},
+		render: function() {
+			this.$el.html(this.template({
+				enabled: this._enabled
+			}));
+		},
+		_load: function() {
+			var url = OC.generateUrl('/apps/twofactor_u2f/settings/state');
+			$.ajax(url, {
+				method: 'GET',
+			}).done(function(data) {
+				this._enabled = data.enabled;
+				this.render();
+			}.bind(this)).fail(function() {
+				OC.Notification.showTemporary('Could not get U2F enabled/disabled state.');
+			});
+		},
+		_onToggleEnabled: function() {
+			if (this._loading) {
+				// Ignore event
+				return;
+			}
 
+			var enabled = this.$('#u2f-enabled').is(':checked');
+
+			if (enabled === this._enabled) {
+				console.log('ign');
+				return;
+			}
+			this._enabled = enabled;
+
+			if (enabled) {
+				this._onRegister();
+			} else {
+				this._onDisable();
+			}
 		},
-		render: function (data) {
-			this.$el.html(this.template(data));
-		},
-		onRegister: function () {
+		_onRegister: function() {
+			this._loading = true;
 			console.log('start register…');
 			var url = OC.generateUrl('apps/twofactor_u2f/settings/startregister');
 			$.ajax(url, {
 				method: 'POST'
-			}).done(function (data) {
+			}).done(function(data) {
 				this.doRegister(data.req, data.sigs);
 			}.bind(this)).fail(function() {
 				OC.Notification.showTemporary('server error while trying to add U2F device');
-			});
+			}).always(function() {
+				this._loading = false;
+			}.bind(this));
 		},
-		doRegister: function (req, sigs) {
+		_onDisable: function() {
+			this._loading = true;
+			console.log('disabling U2F…');
+			var url = OC.generateUrl('apps/twofactor_u2f/settings/disable');
+			$.ajax(url, {
+				method: 'POST'
+			}).fail(function() {
+				OC.Notification.showTemporary('Could not disable U2F');
+			}.bind(this)).always(function() {
+				this._loading = false;
+			}.bind(this));
+		},
+		doRegister: function(req, sigs) {
 			console.log('doRegister', req, sigs);
-			u2f.register([req], sigs, function (data) {
+			u2f.register([req], sigs, function(data) {
 				console.log(data.errorCode);
 				if (data.errorCode && data.errorCode !== 0) {
 					OC.Notification.showTemporary('U2F device registration failed (error code ' + data.errorCode + ')');
+					this._enabled = false;
+					this.render();
 					return;
 				}
 				this.finishRegister(data);
 			}.bind(this));
 		},
-		finishRegister: function (data) {
+		finishRegister: function(data) {
 			console.log('finish register…', data);
 			var url = OC.generateUrl('apps/twofactor_u2f/settings/finishregister');
 			$.ajax(url, {

lib/Controller/SettingsController.php

@@ -27,12 +27,34 @@ class SettingsController extends Controller {
 	/** @var IUserSession */
 	private $userSession;
 
+	/**
+	 * @param string $appName
+	 * @param IRequest $request
+	 * @param U2FManager $manager
+	 * @param IUserSession $userSession
+	 */
 	public function __construct($appName, IRequest $request, U2FManager $manager, IUserSession $userSession) {
 		parent::__construct($appName, $request);
 		$this->manager = $manager;
 		$this->userSession = $userSession;
 	}
 
+	/**
+	 * @NoAdminRequired
+	 */
+	public function state() {
+		return [
+			'enabled' => $this->manager->isEnabled($this->userSession->getUser())
+		];
+	}
+
+	/**
+	 * @NoAdminRequired
+	 */
+	public function disable() {
+		$this->manager->disableU2F($this->userSession->getUser());
+	}
+
 	/**
 	 * @NoAdminRequired
 	 * @UseSession

lib/Service/U2FManager.php

@@ -62,6 +62,13 @@ class U2FManager {
 		return count($registrations) > 0;
 	}
 
+	public function disableU2F(IUser $user) {
+		// TODO: use single query instead
+		foreach ($this->mapper->findRegistrations($user) as $registration) {
+			$this->mapper->delete($registration);
+		}
+	}
+
 	public function startRegistration(IUser $user) {
 		$u2f = $this->getU2f();
 		$data = $u2f->getRegisterData($this->getRegistrations($user));