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simplified

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randogoth 2023-05-22 01:08:26 +03:00
parent 3a33bb0fad
commit df41d19f26
1 changed files with 0 additions and 69 deletions
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69
web/nfc-theme/static/geo.js
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@ -21,75 +21,6 @@ if ( hasharray.length > 0 ) {
// fingerprint user
function cyrb53(str, seed = 0){
let h1 = 0xdeadbeef ^ seed, h2 = 0x41c6ce57 ^ seed;
for (let i = 0, ch; i < str.length; i++) {
ch = str.charCodeAt(i);
h1 = Math.imul(h1 ^ ch, 2654435761);
h2 = Math.imul(h2 ^ ch, 1597334677);
}
h1 = Math.imul(h1 ^ (h1 >>> 16), 2246822507) ^ Math.imul(h2 ^ (h2 >>> 13), 3266489909);
h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507) ^ Math.imul(h1 ^ (h1 >>> 13), 3266489909);
return 4294967296 * (2097151 & h2) + (h1 >>> 0);
};
function audioFingerprint() {
const AudioContext = window.OfflineAudioContext || window.webkitOfflineAudioContex;
const context = new AudioContext(1, 5000, 44100);
const oscillator = context.createOscillator();
oscillator.type = "triangle";
oscillator.frequency.value = 1000;
const compressor = context.createDynamicsCompressor()
compressor.threshold.value = -50;
compressor.knee.value = 40;
compressor.ratio.value = 12;
compressor.reduction.value = 20;
compressor.attack.value = 0;
compressor.release.value = 0.2;
oscillator.connect(compressor);
compressor.connect(context.destination);
oscillator.start()
context.oncomplete = event => {
const samples = event.renderedBuffer.getChannelData(0);
let hash = 0;
for (let i = 0; i < samples.length; ++i) {
hash += Math.abs(samples[i]);
}
return hash;
};
context.startRendering();
}
function canvasFingerprint() {
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
var txt = 'Numinous Field Communication';
ctx.textBaseline = "top";
ctx.font = "14px 'Arial'";
ctx.textBaseline = "alphabetic";
ctx.fillStyle = "#f60";
ctx.fillRect(125, 1, 62, 20);
ctx.fillStyle = "#069";
ctx.fillText(txt, 2, 15);
ctx.fillStyle = "rgba(102, 204, 0, 0.7)";
ctx.fillText(txt, 4, 17);
src = canvas.toDataURL();
var hash;
for (i = 0; i < src.length; i++) {
char = src.charCodeAt(i);
hash = ((hash<<5)-hash)+char;
hash = hash & hash;
}
return hash;
};
function getFingerprint() {
const audioFp = audioFingerprint();
const canvasFp = canvasFingerprint();
const hash = cyrb53(audioFp + canvasFp);
return hash;
};
const generateUUID = () => {
let
d = new Date().getTime(),