From 30407e71a07ec9d74a02237f61576cf7c77f55e5 Mon Sep 17 00:00:00 2001
From: kkapsner <github@mail.kkapsner.de>
Date: Wed, 22 Apr 2015 11:18:26 +0200
Subject: [PATCH] Added fake for readPixels and removed new tab bug

Bug description: if a new tab is opened the wrong blockmode could be
used.
---
 canvasblocker.xpi      | Bin 26382 -> 27189 bytes
 data/inject.js         |  87 +++++++++++++++++++++------------
 lib/main.js            | 106 +++++++++--------------------------------
 lib/sharedFunctions.js |  89 ++++++++++++++++++++++++++++++++++
 4 files changed, 169 insertions(+), 113 deletions(-)
 create mode 100644 lib/sharedFunctions.js

diff --git a/canvasblocker.xpi b/canvasblocker.xpi
index b7de47aa28abd57ed1c3175f7a7a212ef9b66d07..12b26bf8d3fc3e4285b6c5eec9ab6e9a3ee42139 100644
GIT binary patch
delta 6832
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PD!|S^KaSk?U#tHDHLa_n

diff --git a/data/inject.js b/data/inject.js
index 7112e2d..f5c6fbd 100644
--- a/data/inject.js
+++ b/data/inject.js
@@ -171,7 +171,15 @@
 		},
 		readPixels: {
 			mode: blockMode.readAPI,
-			object: unsafeWindow.WebGLRenderingContext
+			object: unsafeWindow.WebGLRenderingContext,
+			fake: function(x, y, width, height, format, type, pixels){
+				// fake not working due to XRay copy restrictions...
+				// for (var i = 0; i < pixels.length; i += 1){
+					// pixels[i] = Math.floor(
+						// Math.random() * 256
+					// );
+				// }
+			}
 		}
 	};
 	
@@ -253,37 +261,56 @@
 	
 	// Communication with main.js
 	
-	self.port.on("block", function(){
-		blockMode.getContext.status = "block";
-		blockMode.readAPI.status = "allow";
-	});
-	self.port.on("ask", function(askOnce){
-		blockMode.getContext.status = "ask";
-		blockMode.getContext.askStatus.askOnce = askOnce;
-		blockMode.readAPI.status = "allow";
-	});
-	self.port.on("blockReadout", function(){
-		blockMode.getContext.status = "allow";
-		blockMode.readAPI.status = "block";
-	});
-	self.port.on("fakeReadout", function(){
-		blockMode.getContext.status = "allow";
-		blockMode.readAPI.status = "fake";
-	});
-	self.port.on("askReadout", function(askOnce){
-		blockMode.getContext.status = "allow";
-		blockMode.readAPI.status = "ask";
-		blockMode.readAPI.askStatus.askOnce = askOnce;
-	});
-	self.port.on("unblock", function(){
-		blockMode.getContext.status = "allow";
-		blockMode.readAPI.status = "allow";
-	});
-	self.port.on("detach", function(){
-		blockMode.getContext.status = "allow";
-		blockMode.readAPI.status = "allow";
+	function setStatus(mode, askOnce){
+		switch (mode){
+			case "block":
+				blockMode.getContext.status = "block";
+				blockMode.readAPI.status = "allow";
+				break;
+			case "ask":
+				blockMode.getContext.status = "ask";
+				blockMode.getContext.askStatus.askOnce = askOnce;
+				blockMode.readAPI.status = "allow";
+				break;
+			case "blockReadout":
+				blockMode.getContext.status = "allow";
+				blockMode.readAPI.status = "block";
+				break;
+			case "fakeReadout":
+				blockMode.getContext.status = "allow";
+				blockMode.readAPI.status = "fake";
+				break;
+			case "askReadout":
+				blockMode.getContext.status = "allow";
+				blockMode.readAPI.status = "ask";
+				blockMode.readAPI.askStatus.askOnce = askOnce;
+				break;
+			case "unblock":
+				blockMode.getContext.status = "allow";
+				blockMode.readAPI.status = "allow";
+				break;
+			case "detach":
+				blockMode.getContext.status = "allow";
+				blockMode.readAPI.status = "allow";
+				break;
+		}
+	}
+	["block", "ask", "blockReadout", "fakeReadout", "askReadout", "unblock", "detach"].forEach(function(mode){
+		self.port.on(mode, function(askOnce){
+			setStatus(mode, askOnce);
+		});
 	});
 	
+	setStatus(
+		checkURL(
+			location,
+			self.options.blockMode,
+			getDomainRegExpList(self.options.whiteList),
+			getDomainRegExpList(self.options.blackList)
+		),
+		self.options.askOnce
+	);
+	
 	// settings passthrough
 	self.port.on("set", function(name, value){
 		settings[name] = value;
diff --git a/lib/main.js b/lib/main.js
index 9413bee..a144043 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -4,46 +4,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 (function(){
 	"use strict";
-
-	function getDomainRegExpList(domainList){
-		var list = domainList
-			.split(",")
-			.map(function(entry){
-				return entry.replace(/^\s+|\s+$/g, "");
-			})
-			.filter(function(entry){
-				return !!entry.length;
-			})
-			.map(function(entry){
-				var regExp;
-				var domain = !!entry.match(/^[\w.]+$/);
-				if (domain){
-					regExp = new RegExp("(?:^|\\.)" + entry.replace(/([\\\+\*\?\[\^\]\$\(\)\{\}\=\!\|\.])/g, "\\$1") + "\\.?$", "i");
-				}
-				else {
-					regExp = new RegExp(entry, "i");
-				}
-				return {
-					match: function(url){
-						if (domain){
-							return url.hostname.match(regExp);
-						}
-						else {
-							return url.href.match(regExp);
-						}
-					}
-				};
-			});
-			
-			list.match = function(url){
-				return this.some(function(entry){
-					return entry.match(url);
-				});
-			};
-			
-			return list;
-	}
-
+	
 	var self = require("sdk/self");
 	var pageMod = require("sdk/page-mod");
 	var array = require("sdk/util/array");
@@ -55,6 +16,8 @@
 	var tabUtils = require("sdk/tabs/utils");
 	var windowUtils = require("sdk/window/utils");
 
+	var sharedFunctions = require("./sharedFunctions.js");
+	var getDomainRegExpList = sharedFunctions.getDomainRegExpList;
 	// preferences
 	Object.keys(prefs).forEach(function(pref){
 		preferences.on(pref, function(){
@@ -90,48 +53,7 @@
 	});
 	
 	function checkURL(url){
-		var mode = "block";
-		switch (prefs.blockMode){
-			case "blockEverything":
-				mode = "block";
-				break;
-			case "allowOnlyWhiteList":
-				if (whiteList.match(url)){
-					mode = "unblock";
-				}
-				else {
-					mode = "block";
-				}
-				break;
-			case "ask":
-			case "blockReadout":
-			case "fakeReadout":
-			case "askReadout":
-				if (whiteList.match(url)){
-					mode = "unblock";
-				}
-				else if (blackList.match(url)){
-					mode = "block";
-				}
-				else {
-					mode = prefs.blockMode;
-				}
-				break;
-			case "blockOnlyBlackList":
-				if (blackList.match(url)){
-					mode = "block";
-				}
-				else {
-					mode = "unblock";
-				}
-				break;
-			case "allowEverything":
-				mode = "unblock";
-				break;
-			default:
-				console.log("Unknown blocking mode. Default to block everything.");
-		}
-		return mode;
+		return sharedFunctions.checkURL(url, prefs.blockMode, whiteList, blackList);
 	}
 	function checkWorker(worker){
 		try {
@@ -154,10 +76,28 @@
 	}
 
 	var workers = [];
+	var workerOptions = {
+		blockMode: checkURL(),
+		whiteList: prefs.whiteList,
+		blackList: prefs.blackList,
+		askOnce: prefs.askOnce
+	};
+	preferences.on("blockMode", function(){
+		workerOptions.blockMode = checkURL();
+	});
+	["whiteList", "blackList", "askOnce"].forEach(function(prefName){
+		preferences.on(prefName, function(){
+			workerOptions[prefName] = prefs[prefName];
+		});
+	});
 	pageMod.PageMod({
 		include: "*",
 		contentScriptWhen: "start",
-		contentScriptFile: self.data.url("inject.js"),
+		contentScriptFile: [
+			self.data.url("sharedFunctions.js").replace("/data/", "/lib/"),
+			self.data.url("inject.js"),
+		],
+		contentScriptOptions: workerOptions,
 		onAttach: function(worker){
 			
 			array.add(workers, worker);
diff --git a/lib/sharedFunctions.js b/lib/sharedFunctions.js
new file mode 100644
index 0000000..ad69c34
--- /dev/null
+++ b/lib/sharedFunctions.js
@@ -0,0 +1,89 @@
+function getDomainRegExpList(domainList){
+	var list = domainList
+		.split(",")
+		.map(function(entry){
+			return entry.replace(/^\s+|\s+$/g, "");
+		})
+		.filter(function(entry){
+			return !!entry.length;
+		})
+		.map(function(entry){
+			var regExp;
+			var domain = !!entry.match(/^[\w.]+$/);
+			if (domain){
+				regExp = new RegExp("(?:^|\\.)" + entry.replace(/([\\\+\*\?\[\^\]\$\(\)\{\}\=\!\|\.])/g, "\\$1") + "\\.?$", "i");
+			}
+			else {
+				regExp = new RegExp(entry, "i");
+			}
+			return {
+				match: function(url){
+					if (domain){
+						return url.hostname.match(regExp);
+					}
+					else {
+						return url.href.match(regExp);
+					}
+				}
+			};
+		});
+		
+		list.match = function(url){
+			return this.some(function(entry){
+				return entry.match(url);
+			});
+		};
+		
+		return list;
+}
+
+function checkURL(url, blockMode, whiteList, blackList){
+	var mode = "block";
+	switch (blockMode){
+		case "blockEverything":
+			mode = "block";
+			break;
+		case "allowOnlyWhiteList":
+			if (url && whiteList.match(url)){
+				mode = "unblock";
+			}
+			else {
+				mode = "block";
+			}
+			break;
+		case "ask":
+		case "blockReadout":
+		case "fakeReadout":
+		case "askReadout":
+			if (url && whiteList.match(url)){
+				mode = "unblock";
+			}
+			else if (url && blackList.match(url)){
+				mode = "block";
+			}
+			else {
+				mode = blockMode;
+			}
+			break;
+		case "blockOnlyBlackList":
+			if (url && blackList.match(url)){
+				mode = "block";
+			}
+			else {
+				mode = "unblock";
+			}
+			break;
+		case "allowEverything":
+			mode = "unblock";
+			break;
+		default:
+			console.log("Unknown blocking mode (" + blockMode + "). Default to block everything.");
+	}
+	return mode;
+}
+
+try {
+	exports.getDomainRegExpList = getDomainRegExpList;
+	exports.checkURL = checkURL;
+}
+catch(e){}
\ No newline at end of file