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
|
/**
* GNU LibreJSXUL - A browser add-on to block nonfree nontrivial JavaScript.
* *
* Copyright (C) 2011, 2012, 2013, 2014 Loic J. Duros
* Copyright (C) 2014, 2015 Nik Nyby
*
* This file is part of GNU LibreJSXUL.
*
* GNU LibreJSXUL is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GNU LibreJSXUL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU LibreJSXUL. If not, see <http://www.gnu.org/licenses/>.
*/
var {Cc, Ci, Cu, Cm, Cr} = require("chrome");
var observerService = Cc["@mozilla.org/observer-service;1"]
.getService(Ci.nsIObserverService);
// these are our target mime types for response interception.
var targetMimeTypes = /.*(javascript|ecmascript|html).*/i;
//var targetMimeTypes = /.*(html).*/i;
// ensure xhr won't create an infinite loop
// with html content.
var urlTester = require("../html_script_finder/url_seen_tester")
.urlSeenTester;
var streamLoader = require("../http_observer/stream_loader").streamLoader;
var httpRequestObserver = {
observe: function(request, aTopic, aData) {
console.debug('atopic is', aTopic);
var url, newListener, status;
if (aTopic === "http-on-examine-response" ||
aTopic === "http-on-examine-cached-response" ||
aTopic === "http-on-examine-merged-response"
) {
request.QueryInterface(Ci.nsIHttpChannel);
if (request.URI.scheme !== 'chrome' &&
(request.responseStatus < 300 ||
request.responseStatus > 399) &&
(targetMimeTypes.test(request.contentType) ||
request.contentType === undefined) &&
(!urlTester.isWhitelisted(request.URI.spec) &&
!urlTester.isWhitelisted(request.originalURI.spec))
) {
newListener = new TracingListener();
request.QueryInterface(Ci.nsITraceableChannel);
newListener.originalListener = request.setNewListener(newListener);
} else if (urlTester.isWhitelisted(request.URI.spec) ||
urlTester.isWhitelisted(request.originalURI.spec)
) {
urlTester.clearUrl(request.URI.spec);
urlTester.clearUrl(request.originalURI.spec);
}
}
},
QueryInterface: function (aIID) {
if (aIID.equals(Ci.nsIObserver) ||
aIID.equals(Ci.nsISupports)
) {
return this;
}
throw Cr.NS_NOINTERFACE;
}
};
// Copy response listener implementation.
function TracingListener() {
this.originalListener = null;
this.streamLoader = streamLoader();
}
TracingListener.prototype = {
onDataAvailable: function(request, context, inputStream, offset, count) {
try {
this.streamLoader.loader.onDataAvailable(
request, context, inputStream, offset, count);
} catch (x) {
console.debug(x, x.lineNumber, x.fileName, "In this case, charset is");
}
},
onStartRequest: function(request, context) {
this.streamLoader.setOriginalListener(this.originalListener);
this.streamLoader.loader.onStartRequest(request, context);
this.originalListener.onStartRequest(request, context);
},
onStopRequest: function(request, context, statusCode) {
try {
this.streamLoader.loader.onStopRequest(request, context, statusCode);
} catch (e) {
console.debug('error in onStopRequest', e, e.lineNumber);
}
},
QueryInterface: function (aIID) {
if (aIID.equals(Ci.nsIStreamListener) ||
aIID.equals(Ci.nsISupports)
) {
return this;
}
throw Cr.NS_NOINTERFACE;
},
};
exports.startHttpObserver = function() {
try {
observerService.addObserver(httpRequestObserver,
"http-on-examine-response", false);
observerService.addObserver(httpRequestObserver,
"http-on-examine-cached-response", false);
observerService.addObserver(httpRequestObserver,
"http-on-examine-merged-response", false);
console.debug('turned on http observer');
} catch (e) {
console.debug(e);
}
};
exports.startHttpObserver();
/* remove observer */
exports.removeHttpObserver = function() {
try {
observerService.removeObserver(httpRequestObserver,
"http-on-examine-response");
observerService.removeObserver(httpRequestObserver,
"http-on-examine-cached-response");
observerService.removeObserver(httpRequestObserver,
"http-on-examine-merged-response");
console.debug('turned off http observer');
} catch (e) {
console.debug(e);
}
};
|
