security-and-privacy/CanvasBlocker
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Test cleanup.

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kkapsner 2017-08-13 23:44:31 +02:00
parent d8f6fb1ac9
commit 7d0c9681df
11 changed files with 437 additions and 395 deletions
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test/test.js Normal file
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(function(){
function show(container, url){
container.querySelector(".display").src = url;
var buffer = new TextEncoder("utf-8").encode(url);
crypto.subtle.digest("SHA-256", buffer).then(function(hash){
var chunks = [];
(new Uint32Array(hash)).forEach(function(num){
chunks.push(num.toString(16));
});
container.querySelector(".hash").textContent = chunks.map(function(chunk){
return "0".repeat(8 - chunk.length) + chunk;
}).join("");
});
}
if (location.search !== "?notInitial"){
show(document.getElementById("top"), topTest());
show(document.getElementById("iframe"), iframeTest());
}
document.querySelector("#top button").addEventListener("click", function(){show(document.getElementById("top"), topTest());});
document.querySelector("#iframe button").addEventListener("click", function(){show(document.getElementById("iframe"), iframeTest());});
}());
function draw(canvas){
canvas.setAttribute("width", 220);
canvas.setAttribute("height", 30);
var fp_text = "BrowserLeaks,com <canvas> 10";
var ctx = canvas.getContext('2d');
ctx.textBaseline = "top";
ctx.font = "14px 'Arial'";
ctx.textBaseline = "alphabetic";
ctx.fillStyle = "#f60";
ctx.fillRect(125, 1, 62, 20);
ctx.fillStyle = "#069";
ctx.fillText(fp_text, 2, 15);
ctx.fillStyle = "rgba(102, 204, 0, 07)";
ctx.fillText(fp_text, 4, 17);
return ctx;
}
function topTest(){
// create window canvas
var canvas = document.createElement('canvas');
// draw image in window canvas
draw(canvas);
return canvas.toDataURL();
}
function iframeTest(){
// create window canvas
var canvas = document.createElement('canvas');
// draw image in window canvas
draw(canvas);
// create iframe canvas and ctx
var iframe_canvas = document.querySelector("#iframe iframe").contentDocument.createElement('canvas');
iframe_canvas.setAttribute("width", 220);
iframe_canvas.setAttribute("height", 30);
var iframe_ctx = iframe_canvas.getContext('2d');
// copy image from window canvas to iframe ctx
iframe_ctx.drawImage(canvas, 0, 0);
return iframe_canvas.toDataURL();
}