From df41d19f26644a7bebf4974ade1e9b1996a2eea8 Mon Sep 17 00:00:00 2001
From: randogoth <kflux@posteo.de>
Date: Mon, 22 May 2023 01:08:26 +0300
Subject: [PATCH] simplified

---
 web/nfc-theme/static/geo.js | 69 -------------------------------------
 1 file changed, 69 deletions(-)

diff --git a/web/nfc-theme/static/geo.js b/web/nfc-theme/static/geo.js
index e450269..c0310cb 100644
--- a/web/nfc-theme/static/geo.js
+++ b/web/nfc-theme/static/geo.js
@@ -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(),