mirror of
https://github.com/kkapsner/CanvasBlocker
synced 2024-12-23 05:10:27 +01:00
067ec6954c
Fixes #121
118 lines
3.5 KiB
JavaScript
118 lines
3.5 KiB
JavaScript
/* jslint moz: true */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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(function(){
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"use strict";
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var scope;
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if ((typeof exports) !== "undefined"){
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scope = exports;
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}
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else {
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window.scope.intercept = {};
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scope = window.scope.intercept;
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}
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const {changedFunctions, setRandomSupply} = require("./modifiedAPI");
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const randomSupplies = require("./randomSupplies");
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setRandomSupply(randomSupplies.nonPersistent);
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var apiNames = Object.keys(changedFunctions);
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var undef;
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var exportFunction = require("chrome").Cu.exportFunction;
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function setRandomSupplyByType(type){
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switch (type){
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case "persistent":
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setRandomSupply(randomSupplies.persistent);
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break;
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default:
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setRandomSupply(randomSupplies.nonPersistent);
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}
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}
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scope.setRandomSupplyByType = setRandomSupplyByType;
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function getURL(window){
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if (!window.location.href || window.location.href === "about:blank"){
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if (window !== window.parent){
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return getURL(window.parent);
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}
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else if (window.opener){
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return getURL(window.opener);
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}
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}
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return window.location.href;
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}
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scope.intercept = function intercept({subject: window}, {check, checkStack, ask, notify, prefs}){
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var siteStatus = check({url: getURL(window)});
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if (siteStatus.mode !== "allow"){
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apiNames.forEach(function(name){
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var changedFunction = changedFunctions[name];
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if (changedFunction.getStatus(undefined, siteStatus).active){
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(Array.isArray(changedFunction.object)? changedFunction.object: [changedFunction.object]).forEach(function(object){
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var constructor = window.wrappedJSObject[object];
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if (constructor){
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var original = constructor.prototype[name];
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Object.defineProperty(
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constructor.prototype,
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name,
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{
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enumerable: true,
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configureable: false,
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get: exportFunction(function(){
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var url = getURL(window);
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if (!url){
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return undef;
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}
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var error = new Error();
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if (checkStack(error.stack)){
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return original;
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}
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var funcStatus = changedFunction.getStatus(this, siteStatus);
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if (funcStatus.active){
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if (funcStatus.mode === "ask"){
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funcStatus.mode = ask({window: window, type: changedFunction.type, canvas: this, errorStack: error.stack});
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}
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switch (funcStatus.mode){
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case "allow":
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return original;
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case "fake":
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setRandomSupplyByType(prefs("rng"));
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var fake = changedFunction.fakeGenerator(prefs, function(messageId){
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notify({url, errorStack: error.stack, messageId, timestamp: new Date()});
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}, window, original);
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switch (fake){
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case true:
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return original;
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case false:
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return undef;
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default:
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return exportFunction(fake, window.wrappedJSObject);
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}
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//case "block":
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default:
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return undef;
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}
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}
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else {
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return original;
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}
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}, window),
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set: exportFunction(function(value){
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Object.defineProperty(
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constructor.prototype,
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name,
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{value}
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);
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}, window)
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}
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);
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}
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});
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}
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});
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}
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};
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}()); |