security-and-privacy/CanvasBlocker
security-and-privacy/CanvasBlocker
1
0
Fork 0
mirror of https://github.com/kkapsner/CanvasBlocker synced 2025-07-04 12:36:37 +02:00
Code Releases Activity

Changed settings

Browse source
This commit is contained in:
kkapsner 2014-08-20 10:21:38 +02:00
parent 430a9226dc
commit 40d059311a
5 changed files with 292 additions and 269 deletions
Download patch file Download diff file Expand all files Collapse all files

188
data/inject.js
View file

@ -1,40 +1,82 @@
var getContext = unsafeWindow.HTMLCanvasElement.prototype.getContext;
var askFunctionName = Math.random().toString(16);
(function(){
"use strict";
var getContext = unsafeWindow.HTMLCanvasElement.prototype.getContext;
var askFunctionName = Math.random().toString(16);
function checkPDF(blocking){
if (unsafeWindow.document.contentType.match(/\/pdf$/i)){
self.port.emit("isPDF", blocking);
return true;
function checkPDF(blocking){
if (document.contentType.match(/\/pdf$/i)){
self.port.emit("isPDF", blocking);
return true;
}
return false;
}
return false;
}
function block(force){
if (force || !checkPDF("block")){
// consoe.log("block");
delete unsafeWindow.HTMLCanvasElement.prototype[askFunctionName];
unsafeWindow.HTMLCanvasElement.prototype.getContext = null;
function block(force){
if (force || !checkPDF("block")){
// consoe.log("block");
delete unsafeWindow.HTMLCanvasElement.prototype[askFunctionName];
unsafeWindow.HTMLCanvasElement.prototype.getContext = null;
}
}
}
function ask(force){
if (force || !checkPDF("ask")){
// console.log("ask");
Object.defineProperty(
unsafeWindow.HTMLCanvasElement.prototype,
askFunctionName,
{
value: getContext,
enumerabe: false
}
);
unsafeWindow.HTMLCanvasElement.prototype.getContext = new unsafeWindow.Function(
function(){
if (this.parentNode){
function askVisible(force){
if (force || !checkPDF("askVisible")){
Object.defineProperty(
unsafeWindow.HTMLCanvasElement.prototype,
askFunctionName,
{
value: getContext,
enumerabe: false
}
);
unsafeWindow.HTMLCanvasElement.prototype.getContext = new unsafeWindow.Function(
function(){
if (this.parentNode){
var oldBorder = this.style.border;
this.style.border = "2px dashed red";
var confirmText = "askForPermission";
var allow = confirm(confirmText);
this.style.border = oldBorder;
if (allow){
this.getContext = this["askFunctionName"];
return this["askFunctionName"].apply(this, arguments);
}
else {
this.getContext = null;
return null;
}
}
else {
return null;
}
}.toString()
.replace(/^function\s*\(\)\s*\{|\}\s*$/g, "")
.replace(/askFunctionName/g, askFunctionName)
.replace(/askForPermission/g, _("askForPermission"))
);
}
}
function askInvisible(force){
if (force || !checkPDF("askInvisible")){
Object.defineProperty(
unsafeWindow.HTMLCanvasElement.prototype,
askFunctionName,
{
value: getContext,
enumerabe: false
}
);
unsafeWindow.HTMLCanvasElement.prototype.getContext = new unsafeWindow.Function(
function(){
var oldBorder = this.style.border;
this.style.border = "2px dashed red";
var confirmText = "askForPermission";
var confirmText =
this.parentNode?
"askForPermission":
"askForInvisiblePermission";
var allow = confirm(confirmText);
this.style.border = oldBorder;
if (allow){
@ -45,70 +87,30 @@ function ask(force){
this.getContext = null;
return null;
}
}
else {
return null;
}
}.toString()
.replace(/^function\s*\(\)\s*\{|\}\s*$/g, "")
.replace(/askFunctionName/g, askFunctionName)
.replace(/askForPermission/g, _("askForPermission"))
);
}.toString()
.replace(/^function\s*\(\)\s*\{|\}\s*$/g, "")
.replace(/askFunctionName/g, askFunctionName)
.replace(/askForPermission/g, _("askForPermission"))
.replace(/askForInvisiblePermission/g, _("askForInvisiblePermission"))
);
}
}
}
function askInvisible(force){
if (force || !checkPDF("askInvisible")){
// console.log("ask");
Object.defineProperty(
unsafeWindow.HTMLCanvasElement.prototype,
askFunctionName,
{
value: getContext,
enumerabe: false
}
);
unsafeWindow.HTMLCanvasElement.prototype.getContext = new unsafeWindow.Function(
function(){
var oldBorder = this.style.border;
this.style.border = "2px dashed red";
var confirmText =
this.parentNode?
"askForPermission":
"askForInvisiblePermission";
var allow = confirm(confirmText);
this.style.border = oldBorder;
if (allow){
this.getContext = this["askFunctionName"];
return this["askFunctionName"].apply(this, arguments);
}
else {
this.getContext = null;
return null;
}
}.toString()
.replace(/^function\s*\(\)\s*\{|\}\s*$/g, "")
.replace(/askFunctionName/g, askFunctionName)
.replace(/askForPermission/g, _("askForPermission"))
.replace(/askForInvisiblePermission/g, _("askForInvisiblePermission"))
);
function unblock(){
// console.log("unblock");
unsafeWindow.HTMLCanvasElement.prototype.getContext = getContext;
}
}
function unblock(){
// console.log("unblock");
unsafeWindow.HTMLCanvasElement.prototype.getContext = getContext;
}
var _ = function(name){
return _[name] || name;
}
self.port.on("setTranslation", function(name, translation){
_[name] = translation;
});
var _ = function(name){
return _[name] || name;
}
self.port.on("setTranslation", function(name, translation){
_[name] = translation;
});
block();
self.port.on("block", block);
self.port.on("ask", ask);
self.port.on("askInvisible", askInvisible);
self.port.on("unblock", unblock);
self.port.on("detach", unblock);
block();
self.port.on("block", block);
self.port.on("askVisible", askVisible);
self.port.on("askInvisible", askInvisible);
self.port.on("unblock", unblock);
self.port.on("detach", unblock);
}());