security-and-privacy/CanvasBlocker
security-and-privacy/CanvasBlocker
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mirror of https://github.com/kkapsner/CanvasBlocker synced 2025-07-04 20:46:39 +02:00
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First working webExtesion.

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This commit is contained in:
kkapsner 2017-06-25 22:33:12 +02:00
parent 4ea073132d
commit cba5680406
9 changed files with 266 additions and 310 deletions
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70
lib/frame.js
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@ -4,7 +4,6 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
(function(){
"use strict";
const {process, frames} = require("sdk/remote/child");
const {intercept} = require("./intercept.js");
const {ask} = require("./askForPermission.js");
const {check: originalCheck, checkStack: originalCheckStack} = require("./check.js");
@ -38,7 +37,7 @@
});
}
function notify(data){
process.port.emit("canvasBlocker-notify", data);
browser.runtime.sendMessage({"canvasBlocker-notify": data});
}
const preferences = require("sdk/simple-prefs");
@ -46,22 +45,59 @@
return preferences.prefs[name];
}
frames.forEvery(function(frame){
frame.addEventListener("DOMWindowCreated", function(ev){
function notify(data){
frame.port.emit("canvasBlocker-notify", data);
}
if (enabled){
var subject = ev.target.defaultView;
intercept(
{subject},
{check, checkStack, ask: askWrapper, notify, prefs}
);
}
var interceptedWindows = new WeakMap();
function interceptWindow(window){
if (interceptedWindows.get(window)){
return false;
}
intercept(
{subject: window},
{check, checkStack, ask: askWrapper, notify, prefs}
);
[window.HTMLIFrameElement, window.HTMLFrameElement].forEach(function(constructor){
var oldContentWindowGetter = constructor.prototype.__lookupGetter__("contentWindow");
Object.defineProperty(
constructor.prototype.wrappedJSObject,
"contentWindow",
{
enumerable: true,
configureable: true,
get: exportFunction(function(){
var window = oldContentWindowGetter.call(this);
interceptWindow(window);
return window;
}, window)
}
);
var oldContentDocumentGetter = constructor.prototype.__lookupGetter__("contentDocument");
Object.defineProperty(
constructor.prototype.wrappedJSObject,
"contentDocument",
{
enumerable: true,
configureable: true,
get: exportFunction(function(){
var document = oldContentDocumentGetter.call(this);
interceptWindow(document.defaultView);
return document;
}, window)
}
);
});
});
interceptedWindows.set(window, true);
return true;
};
if (enabled){
interceptWindow(window);
}
process.port.on("canvasBlocker-unload", function unload(){
enabled = false;
browser.runtime.onMessage.addListener(function(data){
if (data["canvasBlocker-unload"]){
enabled = false;
}
});
}());