The Tor Browser: browser/modules/Feeds.jsm@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

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

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

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

     5 "use strict";

     7 this.EXPORTED_SYMBOLS = [ "Feeds" ];

     9 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");

    11 XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",

    12                                   "resource://gre/modules/BrowserUtils.jsm");

    14 const Ci = Components.interfaces;

    16 this.Feeds = {

    18   /**

    19    * isValidFeed: checks whether the given data represents a valid feed.

    20    *

    21    * @param  aLink

    22    *         An object representing a feed with title, href and type.

    23    * @param  aPrincipal

    24    *         The principal of the document, used for security check.

    25    * @param  aIsFeed

    26    *         Whether this is already a known feed or not, if true only a security

    27    *         check will be performed.

    28    */

    29   isValidFeed: function(aLink, aPrincipal, aIsFeed) {

    30     if (!aLink || !aPrincipal)

    31       return false;

    33     var type = aLink.type.toLowerCase().replace(/^\s+|\s*(?:;.*)?$/g, "");

    34     if (!aIsFeed) {

    35       aIsFeed = (type == "application/rss+xml" ||

    36                  type == "application/atom+xml");

    37     }

    39     if (aIsFeed) {

    40       try {

    41         BrowserUtils.urlSecurityCheck(aLink.href, aPrincipal,

    42                                       Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL);

    43         return type || "application/rss+xml";

    44       }

    45       catch(ex) {

    46       }

    47     }

    49     return null;

    50   },

    52 };

The Tor Browser / file revision