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mirror of https://github.com/kkapsner/CanvasBlocker synced 2024-10-31 18:38:45 +01:00
CanvasBlocker/lib/modifiedWindowAPI.js

86 lines
2.3 KiB
JavaScript

/* 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/. */
(function(){
"use strict";
let scope;
if ((typeof exports) !== "undefined"){
scope = exports;
}
else {
scope = require.register("./modifiedWindowAPI", {});
}
const {checkerWrapper, setGetterProperties, getStatusByFlag} = require("./modifiedAPIFunctions");
const windowNames = new WeakMap();
scope.changedGetters = [
{
objectGetters: [function(window){return window;}],
name: "opener",
getterGenerator: function(checker){
const temp = {
get opener(){
return checkerWrapper(checker, this, arguments, function(args, check){
const {notify, original} = check;
const originalOpener = original.call(this, ...args);
if (originalOpener !== null){
notify("fakedWindowReadout");
}
return null;
});
}
};
return Object.getOwnPropertyDescriptor(temp, "opener").get;
},
valueGenerator: function({original, notify}){
if (original !== null){
notify("fakedWindowReadout");
}
return null;
}
},
{
objectGetters: [function(window){return window;}],
name: "name",
getterGenerator: function(checker){
const temp = {
get name(){
return checkerWrapper(checker, this, arguments, function(args, check){
const {notify, original, prefs} = check;
const originalName = original.call(this, ...args);
if (
this !== this.top &&
prefs("allowWindowNameInFrames", this.location)
){
return originalName;
}
const returnedName = windowNames.get(this) || "";
if (originalName !== returnedName){
notify("fakedWindowReadout");
}
return returnedName;
});
}
};
return Object.getOwnPropertyDescriptor(temp, "name").get;
},
setterGenerator: function(window, original){
const temp = {
set name(name){
original.call(this, ...arguments);
windowNames.set(this, name);
}
};
return Object.getOwnPropertyDescriptor(temp, "name").set;
}
}
];
setGetterProperties(scope.changedGetters, {
type: "readout",
getStatus: getStatusByFlag("protectWindow"),
api: "window"
});
}());