The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

  * You can obtain one at http://mozilla.org/MPL/2.0/. */

 "use strict";

 this.EXPORTED_SYMBOLS = ["Utils"];

 const Cu = Components.utils;

 Cu.import("resource://gre/modules/Services.jsm", this);

 this.Utils = Object.freeze({

   makeURI: function (url) {

     return Services.io.newURI(url, null, null);

   },

   /**

    * Returns true if the |url| passed in is part of the given root |domain|.

    * For example, if |url| is "www.mozilla.org", and we pass in |domain| as

    * "mozilla.org", this will return true. It would return false the other way

    * around.

    */

   hasRootDomain: function (url, domain) {

     let host;

     try {

       host = this.makeURI(url).host;

     } catch (e) {

       // The given URL probably doesn't have a host.

       return false;

     }

     let index = host.indexOf(domain);

     if (index == -1)

       return false;

     if (host == domain)

       return true;

     let prevChar = host[index - 1];

     return (index == (host.length - domain.length)) &&

            (prevChar == "." || prevChar == "/");

   },

   shallowCopy: function (obj) {

     let retval = {};

     for (let key of Object.keys(obj)) {

       retval[key] = obj[key];

     }

     return retval;

   }

 });