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Stop Nefarious Redirects

Block unauthorized redirects

当前为 2024-05-03 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Stop Nefarious Redirects
  3. // @namespace    http://tampermonkey.net/
  4. // @version      3.80
  5. // @description  Block unauthorized redirects
  6. // @match        http://*/*
  7. // @match        https://*/*
  8. // @grant        GM_setValue
  9. // @grant        GM_getValue
  10. // @license      MIT
  11. // @run-at       document-start
  12. // ==/UserScript==
  13.  
  14. (function() {
  15.     'use strict';
  16.  
  17.     // Function to get the current blacklist
  18.     function getBlacklist() {
  19.         return GM_getValue('blacklist', []);
  20.     }
  21.  
  22.     // Function to add a URL to the blacklist
  23.     function addToBlacklist(url) {
  24.         let blacklist = getBlacklist();
  25.         if (!blacklist.includes(url)) {
  26.             blacklist.push(url);
  27.             GM_setValue('blacklist', blacklist);
  28.         }
  29.     }
  30.  
  31.     // Function to display the blacklist
  32.     function displayBlacklist() {
  33.         let blacklist = getBlacklist();
  34.         alert('Current Blacklist:\n' + blacklist.join('\n'));
  35.     }
  36.  
  37.     // Function to handle navigation events
  38.     function handleNavigation(url) {
  39.         if (!isUrlAllowed(url)) {
  40.             console.error('Blocked navigation to:', url);
  41.             addToBlacklist(url); // Add the unauthorized URL to the blacklist
  42.             if (lastKnownGoodUrl) {
  43.                 window.location.replace(lastKnownGoodUrl);
  44.             }
  45.             return false;
  46.         } else {
  47.             console.log('Navigation allowed to:', url);
  48.             lastKnownGoodUrl = url;
  49.             return true;
  50.         }
  51.     }
  52.  
  53.     let lastKnownGoodUrl = window.location.href;
  54.     let navigationInProgress = false;
  55.  
  56.     // Monitor changes to window.location
  57.     ['assign', 'replace', 'href'].forEach(property => {
  58.         const original = window.location[property];
  59.         if (typeof original === 'function') {
  60.             window.location[property] = function(url) {
  61.                 if (!navigationInProgress && handleNavigation(url)) {
  62.                     navigationInProgress = true;
  63.                     setTimeout(() => {
  64.                         navigationInProgress = false;
  65.                     }, 0); // Set to zero to process immediately
  66.                     return original.apply(this, arguments);
  67.                 }
  68.             };
  69.         } else {
  70.             Object.defineProperty(window.location, property, {
  71.                 set: function(url) {
  72.                     if (!navigationInProgress && handleNavigation(url)) {
  73.                         navigationInProgress = true;
  74.                         setTimeout(() => {
  75.                             navigationInProgress = false;
  76.                         }, 0); // Set to zero to process immediately
  77.                         return Reflect.set(window.location, property, url);
  78.                     }
  79.                 },
  80.                 get: function() {
  81.                     return original;
  82.                 },
  83.                 configurable: true
  84.             });
  85.         }
  86.     });
  87.  
  88.     // Enhanced navigation control for back/forward buttons
  89.     window.addEventListener('popstate', function(event) {
  90.         if (!navigationInProgress && !isUrlAllowed(window.location.href)) {
  91.             navigationInProgress = true;
  92.             setTimeout(() => {
  93.                 navigationInProgress = false;
  94.             }, 0); // Set to zero to process immediately
  95.             event.preventDefault();
  96.         }
  97.     });
  98.  
  99.     // Keyboard shortcut listener to display the blacklist
  100.     document.addEventListener('keydown', function(e) {
  101.         if (e.ctrlKey && e.shiftKey && e.key.toLowerCase() === 'l') {
  102.             e.preventDefault();
  103.             displayBlacklist();
  104.         }
  105.     });
  106.  
  107.     // Function to check if a URL is allowed based on the blacklist
  108.     function isUrlAllowed(url) {
  109.         let blacklist = getBlacklist();
  110.         return !blacklist.includes(url);
  111.     }
  112.  
  113.     console.log('Redirect control script with blacklist initialized.');
  114. })();