The Tor Browser: toolkit/modules/RemoteAddonsChild.jsm@b8a032363ba2

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

     1 // -*- Mode: javascript; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-

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

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

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

     6 this.EXPORTED_SYMBOLS = ["RemoteAddonsChild"];

     8 const Ci = Components.interfaces;

     9 const Cc = Components.classes;

    10 const Cu = Components.utils;

    12 Cu.import("resource://gre/modules/XPCOMUtils.jsm");

    13 Cu.import('resource://gre/modules/Services.jsm');

    15 /**

    16  * This code registers an nsIContentPolicy in the child process. When

    17  * it runs, it notifies the parent that it needs to run its own

    18  * nsIContentPolicy list. If any policy in the parent rejects the load,

    19  * that answer is returned to the child.

    20  */

    21 let ContentPolicyChild = {

    22   _classDescription: "Addon shim content policy",

    23   _classID: Components.ID("6e869130-635c-11e2-bcfd-0800200c9a66"),

    24   _contractID: "@mozilla.org/addon-child/policy;1",

    26   /**

    27    * We only notify the parent of the load if it has any

    28    * non-builtin policies registered.

    29    */

    30   _childNeedsHook: false,

    32   init: function(aContentGlobal) {

    33     let registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);

    34     registrar.registerFactory(this._classID, this._classDescription, this._contractID, this);

    36     var catMan = Cc["@mozilla.org/categorymanager;1"].getService(Ci.nsICategoryManager);

    37     catMan.addCategoryEntry("content-policy", this._contractID, this._contractID, false, true);

    39     let policiesToIgnore = [];

    40     let services = Cc["@mozilla.org/categorymanager;1"].getService(Ci.nsICategoryManager)

    41                                                        .enumerateCategory("content-policy");

    42     while (services.hasMoreElements()) {

    43       let item = services.getNext();

    44       let name = item.QueryInterface(Components.interfaces.nsISupportsCString).toString();

    45       policiesToIgnore.push(name);

    46     }

    48     let cpmm = Cc["@mozilla.org/childprocessmessagemanager;1"]

    49                .getService(Ci.nsISyncMessageSender);

    50     cpmm.addMessageListener("Addons:ContentPolicy:NeedHook", this);

    51     cpmm.sendAsyncMessage("Addons:ContentPolicy:IgnorePolicies", { "policies": policiesToIgnore });

    52   },

    54   receiveMessage: function(aMessage) {

    55     switch (aMessage.name) {

    56       case "Addons:ContentPolicy:NeedHook":

    57         this._childNeedsHook = aMessage.data.needed;

    58         break;

    59     }

    60   },

    62   QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentPolicy, Ci.nsIObserver,

    63                                          Ci.nsIChannelEventSink, Ci.nsIFactory,

    64                                          Ci.nsISupportsWeakReference]),

    66   shouldLoad: function(contentType, contentLocation, requestOrigin, node, mimeTypeGuess, extra) {

    67     if (!this._childNeedsHook)

    68       return Ci.nsIContentPolicy.ACCEPT;

    70     let cpmm = Cc["@mozilla.org/childprocessmessagemanager;1"]

    71                .getService(Ci.nsISyncMessageSender);

    72     var rval = cpmm.sendRpcMessage("Addons:ContentPolicy:Run", {

    73       contentType: contentType,

    74       mimeTypeGuess: mimeTypeGuess

    75     }, {

    76       contentLocation: contentLocation,

    77       requestOrigin: requestOrigin,

    78       node: node

    79     });

    80     if (rval.length != 1)

    81       return Ci.nsIContentPolicy.ACCEPT;

    83     return rval[0];

    84   },

    86   shouldProcess: function(contentType, contentLocation, requestOrigin, insecNode, mimeType, extra) {

    87     return Ci.nsIContentPolicy.ACCEPT;

    88   },

    90   createInstance: function(outer, iid) {

    91     if (outer)

    92       throw Cr.NS_ERROR_NO_AGGREGATION;

    93     return this.QueryInterface(iid);

    94   },

    95 };

    97 let RemoteAddonsChild = {

    98   initialized: false,

   100   init: function(aContentGlobal) {

   101     if (this.initialized)

   102       return;

   104     this.initialized = true;

   106     ContentPolicyChild.init(aContentGlobal);

   107   },

   108 };

The Tor Browser / file revision