gecko-dev/toolkit/modules/RemoteAddonsChild.jsm

109 lines
3.7 KiB
JavaScript

// -*- Mode: javascript; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// 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/.
this.EXPORTED_SYMBOLS = ["RemoteAddonsChild"];
const Ci = Components.interfaces;
const Cc = Components.classes;
const Cu = Components.utils;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import('resource://gre/modules/Services.jsm');
/**
* This code registers an nsIContentPolicy in the child process. When
* it runs, it notifies the parent that it needs to run its own
* nsIContentPolicy list. If any policy in the parent rejects the load,
* that answer is returned to the child.
*/
let ContentPolicyChild = {
_classDescription: "Addon shim content policy",
_classID: Components.ID("6e869130-635c-11e2-bcfd-0800200c9a66"),
_contractID: "@mozilla.org/addon-child/policy;1",
/**
* We only notify the parent of the load if it has any
* non-builtin policies registered.
*/
_childNeedsHook: false,
init: function(aContentGlobal) {
let registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
registrar.registerFactory(this._classID, this._classDescription, this._contractID, this);
var catMan = Cc["@mozilla.org/categorymanager;1"].getService(Ci.nsICategoryManager);
catMan.addCategoryEntry("content-policy", this._contractID, this._contractID, false, true);
let policiesToIgnore = [];
let services = Cc["@mozilla.org/categorymanager;1"].getService(Ci.nsICategoryManager)
.enumerateCategory("content-policy");
while (services.hasMoreElements()) {
let item = services.getNext();
let name = item.QueryInterface(Components.interfaces.nsISupportsCString).toString();
policiesToIgnore.push(name);
}
let cpmm = Cc["@mozilla.org/childprocessmessagemanager;1"]
.getService(Ci.nsISyncMessageSender);
cpmm.addMessageListener("Addons:ContentPolicy:NeedHook", this);
cpmm.sendAsyncMessage("Addons:ContentPolicy:IgnorePolicies", { "policies": policiesToIgnore });
},
receiveMessage: function(aMessage) {
switch (aMessage.name) {
case "Addons:ContentPolicy:NeedHook":
this._childNeedsHook = aMessage.data.needed;
break;
}
},
QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentPolicy, Ci.nsIObserver,
Ci.nsIChannelEventSink, Ci.nsIFactory,
Ci.nsISupportsWeakReference]),
shouldLoad: function(contentType, contentLocation, requestOrigin, node, mimeTypeGuess, extra) {
if (!this._childNeedsHook)
return Ci.nsIContentPolicy.ACCEPT;
let cpmm = Cc["@mozilla.org/childprocessmessagemanager;1"]
.getService(Ci.nsISyncMessageSender);
var rval = cpmm.sendRpcMessage("Addons:ContentPolicy:Run", {
contentType: contentType,
mimeTypeGuess: mimeTypeGuess
}, {
contentLocation: contentLocation,
requestOrigin: requestOrigin,
node: node
});
if (rval.length != 1)
return Ci.nsIContentPolicy.ACCEPT;
return rval[0];
},
shouldProcess: function(contentType, contentLocation, requestOrigin, insecNode, mimeType, extra) {
return Ci.nsIContentPolicy.ACCEPT;
},
createInstance: function(outer, iid) {
if (outer)
throw Cr.NS_ERROR_NO_AGGREGATION;
return this.QueryInterface(iid);
},
};
let RemoteAddonsChild = {
initialized: false,
init: function(aContentGlobal) {
if (this.initialized)
return;
this.initialized = true;
ContentPolicyChild.init(aContentGlobal);
},
};