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unstable.html
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unstable.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
canvas {
max-width: 144px;
max-height: 82px;
}
</style>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-WskhaSGFgHYWDcbwN70/dfYBj47jz9qbsMId/iRN3ewGhXQFZCSftd1LZCfmhktB" crossorigin="anonymous">
</head>
<body>
<main role="main" class="container">
<div>
<h1>Video Decoding Test Page</h1>
<p class="lead">This page collects some information about your browser, including how it decodes video.<br>After collecting, please take the time to fill in some information about your device and submit it to help us understand the data!</p>
<div class="controls"></div>
<hr>
</div>
<div class="row submit" style="display:none;">
<div class="col-sm">
<h2>Submit Fingerprint</h2>
<form action="http://206.189.67.146/" method="post">
<div class="form-group">
<label for="cpu">CPU Model</label>
<input type="text" class="form-control" id="cpu" name="cpu" aria-describedby="cpuHelp" placeholder="ex. Intel Core i7-7700K">
<small id="cpuHelp" class="form-text text-muted">Leave blank if not applicable or unknown</small>
</div>
<div class="form-group">
<label for="gpu">Graphics Card Model</label>
<input type="text" class="form-control" id="gpu" name="gpu" aria-describedby="gpuHelp" placeholder="ex. Nvidia GeForce GTX 1080 Ti">
<small id="gpuHelp" class="form-text text-muted">Leave blank if not applicable or unknown</small>
</div>
<div class="form-group">
<label for="model">Device Model</label>
<input type="text" class="form-control" id="model" name="model" aria-describedby="modelHelp" placeholder="ex. iPhone 8 Plus">
<small id="modelHelp" class="form-text text-muted">Leave blank if not applicable or unknown</small>
</div>
<input type="hidden" id="videos" name="videos" />
<input type="hidden" id="renderer" name="renderer" />
<input type="hidden" id="useragent" name="useragent" />
<input type="hidden" id="time" name="time" />
<button type="submit" class="btn btn-primary">Submit</button>
</form>
</div>
</div>
<div class="row fingerprint" style="display:none; padding: 16px;">
<div class="col-sm data border border-secondary">
<h2>Visual Fingerprint</h2>
<div class="visual"></div>
<h2>Hashed Fingerprint</h2>
<div class="hashes"></div>
</div>
</div>
</main>
<script src="bitview.js"></script>
<script>
var assetURL = 'output_frag.mp4';
var mimeCodec = 'video/mp4; codecs="avc1.640015"';
var emptyHash = "9ae5abd3298c7ca041d4e8f8f4d66a6b5c956ea1e81b82424472bac2060ef449";
var indexes = [-1,
4795];
var current = -1;
var attempt = 0;
var asset;
var cleanAsset;
var video = document.createElement('video');
video.addEventListener('canplay', function() {
setTimeout(getHash, attempt*100);
});
video.addEventListener('error', function() {
console.log(video.error);
if(!(current in hashes)) hashes[current] = [];
hashes[current].push("null");
loadNext();
});
var hashes = {};
function sha256(imageData) {
return crypto.subtle.digest("SHA-256", imageData.data).then(function (hash) {
return hex(hash);
});
}
function hex(buffer) {
var hexCodes = [];
var view = new DataView(buffer);
for (var i = 0; i < view.byteLength; i += 4) {
var value = view.getUint32(i)
var stringValue = value.toString(16)
var padding = '00000000'
var paddedValue = (padding + stringValue).slice(-padding.length)
hexCodes.push(paddedValue);
}
return hexCodes.join("");
}
function loadAsset() {
var xhr = new XMLHttpRequest;
xhr.open('get', assetURL);
xhr.responseType = 'arraybuffer';
xhr.onload = function () {
asset = xhr.response;
setup();
};
xhr.send();
}
function fuzz(index) {
if(index == -1) return cleanAsset.slice(0);
var buf = asset.slice(0);
var bv = new BitView(buf);
bv.setBit(index, !bv.getBit(index));
return buf;
}
function getHash() {
var canvas = document.createElement('canvas');
canvas.id = current;
canvas.height = video.videoHeight;
canvas.width = video.videoWidth;
var ctx = canvas.getContext('2d');
ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
var data = ctx.getImageData(0, 0, canvas.width, canvas.height);
sha256(data).then(function(digest) {
if(!(current in hashes)) hashes[current] = [];
if(digest != emptyHash || attempt > 2) {
canvas.setAttribute("data-hash", digest);
document.querySelector(".visual").appendChild(canvas);
hashes[current].push(digest);
}
loadNext();
});
}
function setup() {
startTime = performance.now();
loadNext();
}
function sourceOpen (_) {
var mediaSource = this;
mediaSource.removeEventListener('sourceopen', sourceOpen);
sourceBuffer = mediaSource.addSourceBuffer(mimeCodec);
sourceBuffer.appendBuffer(fuzz(current));
}
function getNext() {
for(var i = 0; i < indexes.length; i++) {
if(indexes[i] in hashes) {
if(hashes[indexes[i]].length < 1) return indexes[i];
} else {
return indexes[i];
}
}
return null;
}
function loadNext() {
last = current;
current = getNext();
if(last == current) {
attempt++;
} else {
attempt = 0;
}
if(current === null) {
finish();
} else {
if ('MediaSource' in window && MediaSource.isTypeSupported(mimeCodec)) {
var mediaSource = new MediaSource;
video.src = URL.createObjectURL(mediaSource);
mediaSource.addEventListener('sourceopen', sourceOpen);
} else {
console.error('Unsupported MIME type or codec: ', mimeCodec);
}
}
}
function finish() {
var time = performance.now() - startTime;
var pre = document.createElement("pre");
pre.innerHTML = JSON.stringify(hashes, undefined, 2);
document.querySelector(".hashes").appendChild(pre);
var renderer = null;
try {
var canvas = document.createElement('canvas');
var gl = canvas.getContext('webgl');
var debugInfo = gl.getExtension('WEBGL_debug_renderer_info');
renderer = gl.getParameter(debugInfo.UNMASKED_RENDERER_WEBGL);
} catch(e) {
}
document.querySelector("#useragent").value = navigator.userAgent;
document.querySelector("#renderer").value = renderer;
document.querySelector("#videos").value = JSON.stringify(hashes);
document.querySelector("#time").value = time;
document.querySelector(".submit").style.display = "block";
}
var button = document.createElement("button");
button.setAttribute("type", "button");
button.setAttribute("class", "btn btn-primary");
button.innerHTML = "Collect Fingerprint";
button.addEventListener("click", function() {
button.setAttribute("disabled", "true");
document.querySelector(".fingerprint").style.display = "block";
var xhr = new XMLHttpRequest;
xhr.open('get', prompt("Please enter assetUrl", "black.mp4"));
xhr.responseType = 'arraybuffer';
xhr.onload = function () {
cleanAsset = xhr.response;
loadAsset();
};
xhr.send();
});
document.querySelector(".controls").appendChild(button);
</script>
</body>
</html>