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Decode Hex strings on Voz

Decode Hex, Base64

当前为 2024-08-22 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Decode Hex strings on Voz
  3. // @namespace    Decode Hex strings on Voz
  4. // @version      2.0
  5. // @icon         https://www.google.com/s2/favicons?sz=64&domain=voz.vn
  6. // @author       kylyte
  7. // @description  Decode Hex, Base64
  8. // @match        https://voz.vn/t/*
  9. // @run-at       document-idle
  10. // @license      GPL-3.0
  11. // ==/UserScript==
  12.  
  13. (function() {
  14.     'use strict';
  15.  
  16.     function decodeHex(hexString) {
  17.         if (!/^[0-9A-Fa-f]+$/.test(hexString)) return hexString;
  18.         let hexStr = '';
  19.         try {
  20.             for (let i = 0; i < hexString.length; i += 2) {
  21.                 hexStr += String.fromCharCode(parseInt(hexString.substr(i, 2), 16));
  22.             }
  23.             return /^[\w\s.,!?@#$%^&*()_+=[\]{}|;:'",<>\-\/`~]*$/.test(hexStr) ? hexStr : hexString;
  24.         } catch {
  25.             return hexString;
  26.         }
  27.     }
  28.  
  29.     function decodeBase64(base64String) {
  30.         if (!/^(?:[A-Za-z0-9+\/]{4})*(?:[A-Za-z0-9+\/]{2}==|[A-Za-z0-9+\/]{3}=)?$/.test(base64String)) return base64String;
  31.         try {
  32.             let binaryString = atob(base64String);
  33.             return /^[\w\s.,!?@#$%^&*()_+=[\]{}|;:'",<>\-\/`~]*$/.test(binaryString) ? binaryString : base64String;
  34.         } catch {
  35.             return base64String;
  36.         }
  37.     }
  38.  
  39.     function decodeContent(elements, regex, decodeFunc) {
  40.         for (let element of elements) {
  41.             if (element.classList.contains('decoded')) continue;
  42.             let content = element.innerHTML;
  43.             let matches = content.match(regex);
  44.             if (matches) {
  45.                 matches.forEach(match => {
  46.                     content = content.replace(new RegExp(escapeRegExp(match), 'g'), decodeFunc(match));
  47.                 });
  48.                 element.innerHTML = content;
  49.                 element.classList.add('decoded');
  50.             }
  51.         }
  52.     }
  53.  
  54.     function escapeRegExp(string) {
  55.         return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
  56.     }
  57.  
  58.     function main() {
  59.         let elements = document.getElementsByClassName('bbCodeBlock-content');
  60.         decodeContent(elements, /([0-9A-Fa-f]{2}){8,}/g, decodeHex);
  61.         decodeContent(elements, /^(?:[A-Za-z0-9+\/]{4})*(?:[A-Za-z0-9+\/]{2}==|[A-Za-z0-9+\/]{3}=|[A-Za-z0-9+\/]{4})$/m, decodeBase64);
  62.     }
  63.  
  64.     main();
  65.  
  66.     new MutationObserver(() => main()).observe(document.documentElement, {
  67.         childList: true,
  68.         subtree: true
  69.     });
  70. })();