security-and-privacy/CanvasBlocker
security-and-privacy/CanvasBlocker
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First implementation of the fakeInput mode. (And other improvements.)

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This commit is contained in:
kkapsner 2016-10-23 22:12:12 +02:00
parent b6d08459a5
commit a2fa00fb98
5 changed files with 188 additions and 59 deletions
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35
lib/intercept.js
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@ -10,6 +10,7 @@
setRandomSupply(randomSupplies.nonPersistent);
var apiNames = Object.keys(changedFunctions);
var undef;
var exportFunction;
function setRandomSupplyByType(type){
switch (type){
@ -38,28 +39,27 @@
}
var error = new Error();
var status = check({url: window.location.href, errorStack: error.stack});
if (status.type.indexOf(changedFunction.type) !== -1){
if (status.mode === "ask"){
status.mode = ask({window: window, type: changedFunction.type, canvas: this, errorStack: error.stack});
var funcStatus = changedFunction.getStatus(this, status);
if (funcStatus.active){
if (funcStatus.mode === "ask"){
funcStatus.mode = ask({window: window, type: changedFunction.type, canvas: this, errorStack: error.stack});
}
switch (status.mode){
switch (funcStatus.mode){
case "allow":
return original;
case "fake":
setRandomSupplyByType(prefs("rng"));
if (changedFunction.fake){
notify({url: window.location.href, errorStack: error.stack}, window);
return changedFunction.fake;
}
else {
if (changedFunction.fakeGenerator) {
return changedFunction.fakeGenerator(prefs, function(){
notify({url: window.location.href, errorStack: error.stack}, window);
});
}
else {
var fake = changedFunction.fakeGenerator(prefs, function(messageId){
notify({url: window.location.href, errorStack: error.stack, messageId});
});
switch (fake){
case true:
return original;
case false:
return undef;
}
default:
return exportFunction(fake, window.wrappedJSObject);
}
//case "block":
default:
@ -74,4 +74,7 @@
);
});
};
exports.setExportFunction = function(eFunc){
exportFunction = eFunc;
};
}());