security-and-privacy/CanvasBlocker
security-and-privacy/CanvasBlocker
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kkapsner 2014-07-31 03:05:51 +02:00
parent c8410b6536
commit 0ab4f1b7d3
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12
data/inject.js Normal file
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var getContext = unsafeWindow.HTMLCanvasElement.prototype.getContext
function block(){
unsafeWindow.HTMLCanvasElement.prototype.getContext = null;
}
function unblock(){
unsafeWindow.HTMLCanvasElement.prototype.getContext = getContext;
}
self.port.on("block", block);
self.port.on("unblock", unblock);
self.port.on("detach", unblock);