2017-12-12 21:56:22 +01:00
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<!DOCTYPE html>
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<html>
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<head>
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2019-09-04 00:30:20 +02:00
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<title>Settings loading test</title>
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2019-02-20 08:13:37 +01:00
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<link href="testIcon.svg" type="image/png" rel="icon">
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<link href="testIcon.svg" type="image/png" rel="shortcut icon">
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2017-12-12 21:56:22 +01:00
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<script>
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2019-12-16 19:27:28 +01:00
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const firstDescriptor = Object.getOwnPropertyDescriptor(HTMLCanvasElement.prototype, "getContext");
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2019-12-12 17:44:14 +01:00
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console.log(new Date(), "starting first fingerprint", window.name);
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2017-12-13 20:08:53 +01:00
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function fingerPrint(){
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2019-12-16 19:27:28 +01:00
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"use strict";const canvas = document.createElement("canvas");
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2017-12-13 20:08:53 +01:00
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canvas.setAttribute("width", 220);
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canvas.setAttribute("height", 30);
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2019-12-16 19:27:28 +01:00
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const fp_text = "BrowserLeaks,com <canvas> 10";
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2017-12-13 20:08:53 +01:00
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2019-12-16 19:27:28 +01:00
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const ctx = canvas.getContext("2d");
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2017-12-13 20:08:53 +01:00
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ctx.textBaseline = "top";
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ctx.font = "14px 'Arial'";
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ctx.textBaseline = "alphabetic";
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ctx.fillStyle = "#f60";
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ctx.fillRect(125, 1, 62, 20);
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ctx.fillStyle = "#069";
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ctx.fillText(fp_text, 2, 15);
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ctx.fillStyle = "rgba(102, 204, 0, 07)";
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ctx.fillText(fp_text, 4, 17);
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return canvas.toDataURL();
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}
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2019-12-16 19:27:28 +01:00
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async function hash(url){
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2019-11-30 02:05:37 +01:00
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"use strict";
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2019-12-16 19:27:28 +01:00
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const buffer = new TextEncoder("utf-8").encode(url);
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const hash = await crypto.subtle.digest("SHA-256", buffer);
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const chunks = [];
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(new Uint32Array(hash)).forEach(function(num){
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chunks.push(num.toString(16));
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2017-12-13 20:08:53 +01:00
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});
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2019-12-16 19:27:28 +01:00
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return chunks.map(function(chunk){
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return "0".repeat(8 - chunk.length) + chunk;
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}).join("");
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2017-12-13 20:08:53 +01:00
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}
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2019-12-16 19:27:28 +01:00
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let firstFingerprint = false;
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2017-12-12 21:56:22 +01:00
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try {
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2019-11-30 02:05:37 +01:00
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firstFingerprint = fingerPrint();
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2017-12-12 21:56:22 +01:00
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}
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2019-11-28 01:26:35 +01:00
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catch (error){
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console.log(new Date(), error);
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2017-12-12 21:56:22 +01:00
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}
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</script>
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2019-09-04 00:30:20 +02:00
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<style>
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#output {
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padding: 1em;
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}
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2019-12-12 00:10:46 +01:00
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.ok {
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background-color: green;
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}
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.kok {
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background-color: orange;
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}
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.nok {
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background-color: red;
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}
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2019-09-04 00:30:20 +02:00
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</style>
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2017-12-12 21:56:22 +01:00
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</head>
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<body>
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2019-09-04 00:30:20 +02:00
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<h1>Settings loading test</h1>
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<h2>Expected result</h2>
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<ul>
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<li>the background of the test result is green and states "good"</li>
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<li>the displayed hash changes upon reload</li>
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</ul>
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<h2>Test</h2>
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<div id="output"></div>
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2017-12-12 21:56:22 +01:00
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<script>
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2017-12-13 20:08:53 +01:00
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if (firstFingerprint){
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2019-12-16 19:27:28 +01:00
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const output = document.getElementById("output");
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2019-09-04 00:30:20 +02:00
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output.textContent = "context API not blocked";
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2019-12-12 00:10:46 +01:00
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output.appendChild(document.createElement("br"));
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2019-12-16 19:27:28 +01:00
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window.setTimeout(async function(){
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2019-11-30 02:05:37 +01:00
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"use strict";
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2018-08-27 00:33:39 +02:00
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console.log(new Date(), "starting second fingerprint", window.name);
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2019-12-16 19:27:28 +01:00
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const secondDescriptor = Object.getOwnPropertyDescriptor(HTMLCanvasElement.prototype, "getContext");
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2019-12-12 00:10:46 +01:00
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if (firstDescriptor.value === secondDescriptor.value){
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output.appendChild(document.createTextNode("descriptor did not change -> good!"));
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output.classList.add("ok");
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}
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else {
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output.appendChild(document.createTextNode("descriptor changed -> bad!"));
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console.log(firstDescriptor, secondDescriptor);
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output.classList.add("nok");
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}
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2019-09-04 00:30:20 +02:00
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output.appendChild(document.createElement("br"));
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2019-12-16 19:27:28 +01:00
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const secondFingerprint = fingerPrint();
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2017-12-13 20:08:53 +01:00
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if (firstFingerprint === secondFingerprint){
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2019-12-16 19:27:28 +01:00
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const firstHash = await hash(firstFingerprint);
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output.appendChild(document.createTextNode("fingerprint consistent (" + firstHash + ") -> good!"));
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output.classList.add("ok");
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2017-12-13 20:08:53 +01:00
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}
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else {
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2019-12-16 19:27:28 +01:00
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const hashes = await Promise.all([hash(firstFingerprint), hash(secondFingerprint)]);
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output.appendChild(
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document.createTextNode(
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"fingerprint not consistent (" +
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hashes[0] + " != " + hashes[1] +
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") -> very bad! (potential fingerprint leak)"
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)
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);
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output.classList.add("nok");
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2017-12-13 20:08:53 +01:00
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}
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}, 500);
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}
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else {
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2019-09-04 00:30:20 +02:00
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output.textContent = "context API blocked";
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2019-12-12 00:10:46 +01:00
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output.classList.add("kok");
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2017-12-13 20:08:53 +01:00
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}
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2017-12-12 21:56:22 +01:00
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</script>
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</body></html>
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