Newer
Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
/**
* 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');
/**
* Gets and sets add-on specific preferences.
* @var {object} simplePreferences
*/
var simplePreferences = require('sdk/simple-prefs');
//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 HTML_DOCUMENT = Ci.nsIDOMHTMLDocument;
const VALUE_SEPARATOR = ';';
/**
* Variables
*/
var preferences = simplePreferences.prefs;
var taintedDomains = {};
/**
* Initializations
*/
_applyTaintPreference();
/**
* Load Watcher Class
*/
var LoadWatcher = new Class({
extends: Unknown,
interfaces: ['nsIContentPolicy'],
get wrappedJSObject() { return this },
register: function () {
categoryManager.deleteCategoryEntry('content-policy', '@decentraleyes.org/load-watcher;1', 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.
this.saveTaintedDomain(requestOrigin.host);
}
} else if (node instanceof HTML_DOCUMENT) {
if (node.defaultView && node.defaultView.frameElement && node.defaultView.frameElement.tagName === 'IFRAME') {
// Add corresponding origin domain to the list of tainted domains.
this.saveTaintedDomain(requestOrigin.host);
}
}
}
// Accept the resource load request.
return Ci.nsIContentPolicy.ACCEPT;
},
saveTaintedDomain: function (taintedDomain) {
if (taintedDomains[taintedDomain] !== true) {
taintedDomains[taintedDomain] = true;
preferences.taintedDomainList = Object.keys(taintedDomains).join(VALUE_SEPARATOR);
}
}
});
/**
* 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);
}
});
/**
* Private Methods
*/
function _applyTaintPreference() {
taintedDomains = {};
//noinspection JSUnresolvedVariable
preferences.taintedDomainList.split(VALUE_SEPARATOR).forEach(function (domain) {
taintedDomains[domain] = true;
});
}
/**
* Exports
*/
module.exports = LoadWatcher;