e10s ready!

Fixes #60 and #42

lib/intercept.js

@@ -0,0 +1,51 @@
+/* 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";
+	
+	const {changedFunctions} = require("./modifiedAPI");
+	var apiNames = Object.keys(changedFunctions);
+	var undef;
+	
+	exports.intercept = function intercept({subject: window}, {check, ask, notify}){
+		apiNames.forEach(function(name){
+			var changedFunction = changedFunctions[name];
+			var original = window.wrappedJSObject[changedFunction.object].prototype[name];
+			
+			Object.defineProperty(
+				window.wrappedJSObject[changedFunction.object].prototype,
+				name,
+				{
+					enumerable: true,
+					configureable: false,
+					get: function(){
+						if (!window.location.href){
+							return undef;
+						}
+						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});
+							}
+							switch (status.mode){
+								case "allow":
+									return original;
+								case "fake":
+									notify({url: window.location.href, errorStack: error.stack}, window);
+									return changedFunction.fake || undef;
+								//case "block":
+								default:
+									return undef;
+							}
+						}
+						else {
+							return original;
+						}
+					}
+				}
+			);
+		});
+	}
+}());