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/**
* Load Watcher
* Belongs to Decentraleyes.
*
* @author Thomas Rientjes
* @since 2016-02-04
* @license MPL 2.0
*
* 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';
/**
* Imports
*/
var { Class } = require('sdk/core/heritage');
var { Unknown, Factory } = require('sdk/platform/xpcom');
var { Cc, Ci, Cu } = require('chrome');
var xpcom = require('sdk/platform/xpcom');
/**
* Resource version mappings.
* @var {object} mappings
*/
var mappings = require('./mappings');
/**
* Retains data across application restarts.
var simpleStorage = require('sdk/simple-storage');
//noinspection JSUnresolvedFunction
var categoryManager = Cc['@mozilla.org/categorymanager;1']
.getService(Ci.nsICategoryManager);
/**
* Constants
*/
const CONTRACT_ID = '@decentraleyes.org/load-watcher;1';
const SCRIPT_CONTENT_TYPE = Ci.nsIContentPolicy.TYPE_SCRIPT;
const SCRIPT_ELEMENT = Ci.nsIDOMHTMLScriptElement;
const REQUEST_ACCEPTATION = Ci.nsIContentPolicy.ACCEPT;
/**
* Tainted domains that are not automatically detectable.
* @var {object} undetectableTaintedDomains
*/
var undetectableTaintedDomains = {
'passport.twitch.tv': true,
'minigames.mail.ru': true
};
storage.taintedDomains = storage.taintedDomains || undetectableTaintedDomains;
/**
* Load Watcher Class
*/
var LoadWatcher = new Class({
extends: Unknown,
interfaces: ['nsIContentPolicy'],
get wrappedJSObject() {
return this
},
categoryManager.deleteCategoryEntry('content-policy', CONTRACT_ID, false);
categoryManager.addCategoryEntry('content-policy', CONTRACT_ID, CONTRACT_ID, false, true);
},
shouldLoad: function (contentType, contentLocation, requestOrigin, node) {
if (contentType == SCRIPT_CONTENT_TYPE && mappings[contentLocation.host]) {
if (node instanceof SCRIPT_ELEMENT) {
if (node.hasAttribute('crossorigin') || node.hasAttribute('integrity')) {
// Add corresponding origin domain to the list of tainted domains.
storage.taintedDomains[requestOrigin.host] = true;
}
}
}
// Accept the resource load request.
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}
});
/**
* Load Watcher Factory
*/
var factory = Factory({
contract: CONTRACT_ID,
Component: LoadWatcher,
unregister: false
});
/**
* Unregister
*/
var unload = require('sdk/system/unload');
unload.when(function () {
function trueUnregister() {
categoryManager.deleteCategoryEntry('content-policy', CONTRACT_ID, false);
try {
xpcom.unregister(factory);
} catch (exception) {
Cu.reportError(exception);
}
}
if ('dispatch' in Cu) {
Cu.dispatch(trueUnregister, trueUnregister);
} else {
Cu.import('resource://gre/modules/Services.jsm');
Services.tm.mainThread.dispatch(trueUnregister, 0);
}
});
/**
* Exports
*/
module.exports = LoadWatcher;