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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 function Authenticator() {
      6 }
      7 
      8 /**
      9  * Singleton getter of Authenticator.
     10  * @return {Object} The singleton instance of Authenticator.
     11  */
     12 Authenticator.getInstance = function() {
     13   if (!Authenticator.instance_) {
     14     Authenticator.instance_ = new Authenticator();
     15   }
     16   return Authenticator.instance_;
     17 };
     18 
     19 Authenticator.prototype = {
     20   email_: null,
     21   password_: null,
     22   attemptToken_: null,
     23 
     24   // Input params from extension initialization URL.
     25   inputLang_: undefined,
     26   intputEmail_: undefined,
     27 
     28   GAIA_URL: 'https://accounts.google.com/',
     29   GAIA_PAGE_PATH: 'ServiceLogin?service=chromeoslogin' +
     30       '&skipvpage=true&sarp=1&rm=hide' +
     31       '&continue=chrome-extension://mfffpogegjflfpflabcdkioaeobkgjik/' +
     32       'success.html',
     33   THIS_EXTENSION_ORIGIN: 'chrome-extension://mfffpogegjflfpflabcdkioaeobkgjik',
     34   PARENT_PAGE: 'chrome://oobe/',
     35 
     36   initialize: function() {
     37     var params = getUrlSearchParams(location.search);
     38     this.parentPage_ = params['parentPage'] || this.PARENT_PAGE;
     39     this.gaiaUrl_ = params['gaiaUrl'] || this.GAIA_URL;
     40     this.inputLang_ = params['hl'];
     41     this.inputEmail_ = params['email'];
     42 
     43     document.addEventListener('DOMContentLoaded', this.onPageLoad.bind(this));
     44   },
     45 
     46   isGaiaMessage_: function(msg) {
     47     // Not quite right, but good enough.
     48     return this.gaiaUrl_.indexOf(msg.origin) == 0 ||
     49            this.GAIA_URL.indexOf(msg.origin) == 0;
     50   },
     51 
     52   isInternalMessage_: function(msg) {
     53     return msg.origin == this.THIS_EXTENSION_ORIGIN;
     54   },
     55 
     56   getFrameUrl_: function() {
     57     var url = this.gaiaUrl_;
     58 
     59     url += this.GAIA_PAGE_PATH;
     60 
     61     if (this.inputLang_)
     62       url += '&hl=' + encodeURIComponent(this.inputLang_);
     63     if (this.inputEmail_)
     64       url += '&Email=' + encodeURIComponent(this.inputEmail_);
     65     return url;
     66   },
     67 
     68   loadFrame_: function() {
     69     $('gaia-frame').src = this.getFrameUrl_();
     70   },
     71 
     72   onPageLoad: function(e) {
     73     window.addEventListener('message', this.onMessage.bind(this), false);
     74     this.loadFrame_();
     75   },
     76 
     77   onLoginUILoaded: function() {
     78     var msg = {
     79       'method': 'loginUILoaded'
     80     };
     81     window.parent.postMessage(msg, this.parentPage_);
     82   },
     83 
     84   onMessage: function(e) {
     85     var msg = e.data;
     86     if (msg.method == 'attemptLogin' && this.isGaiaMessage_(e)) {
     87       this.email_ = msg.email;
     88       this.password_ = msg.password;
     89       this.attemptToken_ = msg.attemptToken;
     90     } else if (msg.method == 'clearOldAttempts' && this.isGaiaMessage_(e)) {
     91       this.email_ = null;
     92       this.password_ = null;
     93       this.attemptToken_ = null;
     94       this.onLoginUILoaded();
     95     } else if (msg.method == 'confirmLogin' && this.isInternalMessage_(e)) {
     96       if (this.attemptToken_ == msg.attemptToken) {
     97         var msg = {
     98           'method': 'completeLogin',
     99           'email': this.email_,
    100           'password': this.password_
    101         };
    102         window.parent.postMessage(msg, this.parentPage_);
    103       } else {
    104         console.log('#### Authenticator.onMessage: unexpected attemptToken!?');
    105       }
    106     } else {
    107       console.log('#### Authenticator.onMessage: unknown message + origin!?');
    108     }
    109   }
    110 };
    111 
    112 Authenticator.getInstance().initialize();
    113