Retrieve the authenticated user's e-mail from GAIA during SAML login

chrome/browser/resources/chromeos/login/screen_gaia_signin.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview Oobe signin screen implementation.
  */
 
 <include src="../../gaia_auth_host/gaia_auth_host.js"></include>
 
 login.createScreen('GaiaSigninScreen', 'gaia-signin', function() {
   // Gaia loading time after which error message must be displayed and
   // lazy portal check should be fired.
   /** @const */ var GAIA_LOADING_PORTAL_SUSSPECT_TIME_SEC = 7;
 
   // Maximum Gaia loading time in seconds.
   /** @const */ var MAX_GAIA_LOADING_TIME_SEC = 60;
 
   /** @const */ var HELP_TOPIC_ENTERPRISE_REPORTING = 2535613;
 
   return {
     EXTERNAL_API: [
       'loadAuthExtension',
       'updateAuthExtension',
+      'setAuthenticatedUserEmail',
       'doReload',
       'onFrameError'
     ],
 
     /**
      * Frame loading error code (0 - no error).
      * @type {number}
      * @private
      */
     error_: 0,
@@ skipping 30 matching lines @@
      * @type {boolean}
      * @private
      */
     cancelAllowed_: undefined,
 
     /** @override */
     decorate: function() {
       this.gaiaAuthHost_ = new cr.login.GaiaAuthHost($('signin-frame'));
       this.gaiaAuthHost_.addEventListener(
           'ready', this.onAuthReady_.bind(this));
+      this.gaiaAuthHost_.retrieveAuthenticatedUserEmailCallback =
+          this.onRetrieveAuthenticatedUserEmail_.bind(this);
       this.gaiaAuthHost_.confirmPasswordCallback =
           this.onAuthConfirmPassword_.bind(this);
       this.gaiaAuthHost_.noPasswordCallback =
           this.onAuthNoPassword_.bind(this);
       this.gaiaAuthHost_.addEventListener('authFlowChange',
           this.onAuthFlowChange_.bind(this));
 
       $('enterprise-info-hint-link').addEventListener('click', function(e) {
         chrome.send('launchHelpApp', [HELP_TOPIC_ENTERPRISE_REPORTING]);
         e.preventDefault();
@@ skipping 204 matching lines @@
       var noRightPanel = $('gaia-signin-reason').hidden &&
                          $('createAccount').hidden &&
                          $('guestSignin').hidden &&
                          $('createManagedUserPane').hidden;
       this.classList.toggle('no-right-panel', noRightPanel);
       if (Oobe.getInstance().currentScreen === this)
         Oobe.getInstance().updateScreenSize(this);
     },
 
     /**
+     * Sends the authenticated user's e-mail address to the auth extension.
+     * @param {number} attemptToken The opaque token provided to
+     *     onRetrieveAuthenticatedUserEmail_.
+     * @param {string} email The authenticated user's e-mail address.
+     */
+    setAuthenticatedUserEmail: function(attemptToken, email) {
+      this.gaiaAuthHost_.setAuthenticatedUserEmail(attemptToken, email);
+    },
+
+    /**
      * Whether the current auth flow is SAML.
      */
     isSAML: function() {
        return this.gaiaAuthHost_.authFlow ==
            cr.login.GaiaAuthHost.AuthFlow.SAML;
     },
 
     /**
      * Invoked when the authFlow property is changed no the gaia host.
      * @param {Event} e Property change event.
@@ skipping 31 matching lines @@
       }
 
       chrome.send('loginWebuiReady');
       chrome.send('loginVisible', ['gaia-signin']);
 
       // Warm up the user images screen.
       Oobe.getInstance().preloadScreen({id: SCREEN_USER_IMAGE_PICKER});
     },
 
     /**
+     * Invoked when the auth host needs the authenticated user's e-mail to be
+     * retrieved.
+     * @param {number} attemptToken Opaque token to be passed to
+     *     setAuthenticatedUserEmail along with the e-mail address.
+     * @private
+     */
+    onRetrieveAuthenticatedUserEmail_: function(attemptToken) {
+      chrome.send('retrieveAuthenticatedUserEmail', [attemptToken]);
+    },
+
+    /**
      * Invoked when the auth host needs the user to confirm password.
      * @private
      */
     onAuthConfirmPassword_: function() {
       this.loading = true;
       Oobe.getInstance().headerHidden = false;
 
       login.ConfirmPasswordScreen.show(
           this.onConfirmPasswordCollected_.bind(this));
     },
@@ skipping 161 matching lines @@
      * Handler for iframe's error notification coming from the outside.
      * For more info see C++ class 'SnifferObserver' which calls this method.
      * @param {number} error Error code.
      */
     onFrameError: function(error) {
       this.error_ = error;
       chrome.send('frameLoadingCompleted', [this.error_]);
     },
   };
 });