☰

Kahoot AntiBot

Remove all bots from a kahoot game.

当前为 2019-04-17 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Kahoot AntiBot
  3. // @namespace    http://tampermonkey.net/
  4. // @version      2.2.1
  5. // @description  Remove all bots from a kahoot game.
  6. // @author       theusaf
  7. // @match        *://play.kahoot.it/*
  8. // @grant        none
  9. // @run-at       document_start
  10. // ==/UserScript==
  11.  
  12. if(window.fireLoaded){
  13.   throw "page is loaded";
  14. }
  15. window.stop(); //stop loading and save data from the page.
  16. window.url = window.location.href;
  17. window.version = new XMLHttpRequest();
  18. window.version.open("GET",`https://play.kahoot.it/shared/theme/config.js?${Date.now()}`);
  19. window.version.send();
  20. window.version.onload = ()=>{
  21.   var kV = window.version.response.split("'")[1];
  22.   var player = new XMLHttpRequest();
  23.   player.open("GET","https://play.kahoot.it/js/player.min.js?v=" + kV);
  24.   player.send();
  25.   player.onload = ()=>{
  26.     var playerScript = player.response.replace("i.onMessage=function(e,t){","i.onMessage=function(e,t){window.globalMessageListener(e,t);");
  27.     var boots = new XMLHttpRequest();
  28.     boots.open("GET","https://play.kahoot.it/js/bootstrap.js");
  29.     boots.send();
  30.     boots.onload = ()=>{
  31.       var patch = boots.response.replace(",$script([\"js/player.min.js?v\"+kahoot.version],function(){angular.bootstrap(document,[\"app\"])});",";");
  32.       var page = new XMLHttpRequest();
  33.       page.open("GET",window.url);
  34.       page.send();
  35.       page.onload = ()=>{
  36.         const code = `window.setupAntibot = ()=>{
  37.             const percent = 0.6;
  38.             var waterMark = document.createElement("p");
  39.             waterMark.innerText = "v2.2.1 @theusaf";
  40.             waterMark.style = "position: fixed; bottom: 100px; right: 100px; font-size: 1em";
  41.             document.body.append(waterMark);
  42.             window.isUsingNamerator = false;
  43.             window.cachedUsernames = [];
  44.             window.confirmedPlayers = [];
  45.             var messageId = 0;
  46.             var clientId = null;
  47.             var pin = null;
  48.             function similarity(s1, s2) {
  49.                 if(!s2){
  50.                     return 0;
  51.                 }
  52.                 if(!isNaN(s2) && !isNaN(s1) && s1.length == s2.length){
  53.                     return 1;
  54.                 }
  55.                 if(window.isUsingNamerator){
  56.                     let caps = s2.length - s2.replace(/[A-Z]/g, '').length;
  57.                     if(caps !== 2){ /*has less than 2 or more than 2 capitals*/
  58.                         return -1;
  59.                     }
  60.                     if (s2.substr(0,1).replace(/[A-Z]/g,'').length == 1){ /*first char is not a capital*/
  61.                         return -1;
  62.                     }
  63.                     if(s2.substr(s2.length - 1,1).replace(/[A-Z]/g,'').length == 0){ /*last char is a capital*/
  64.                         return -1;
  65.                     }
  66.                     if(s2.replace(/[a-z]/ig,'').length > 0){ /*has non-letter chars*/
  67.                         return -1;
  68.                     }
  69.                 }
  70.                 if(!s1){
  71.                     return;
  72.                 }
  73.                 s1 = s1.toLowerCase();
  74.                 s2 = s2.toLowerCase();
  75.                 var longer = s1;
  76.                 var shorter = s2;
  77.                 if (s1.length < s2.length) {
  78.                     longer = s2;
  79.                     shorter = s1;
  80.                 }
  81.                 var longerLength = longer.length;
  82.                 if (longerLength == 0) {
  83.                     return 1.0;
  84.                 }
  85.                 return (longerLength - editDistance(longer, shorter)) / parseFloat(longerLength);
  86.             }
  87.             function editDistance(s1, s2) {
  88.                 s1 = s1.toLowerCase();
  89.                 s2 = s2.toLowerCase();
  90.  
  91.                 var costs = new Array();
  92.                 for (var i = 0; i <= s1.length; i++) {
  93.                     var lastValue = i;
  94.                     for (var j = 0; j <= s2.length; j++) {
  95.                         if (i == 0){
  96.                             costs[j] = j;
  97.                         }
  98.                         else {
  99.                             if (j > 0) {
  100.                                 var newValue = costs[j - 1];
  101.                                 if (s1.charAt(i - 1) != s2.charAt(j - 1)){
  102.                                     newValue = Math.min(Math.min(newValue, lastValue),costs[j]) + 1;
  103.                                 }
  104.                     costs[j - 1] = lastValue;
  105.                                 lastValue = newValue;
  106.                             }
  107.                         }
  108.                     }
  109.                     if (i > 0){
  110.                         costs[s2.length] = lastValue;
  111.                     }
  112.                 }
  113.                 return costs[s2.length];
  114.             }
  115.             function checkSettings(){
  116.                 var namer = document.querySelectorAll("[data-functional-selector=\\\"game-settings-namerator-toggle\\\"]")[0];
  117.                 window.isUsingNamerator = Array.from(namer.classList).includes("on");
  118.                 let observer = new MutationObserver(function(button){
  119.                     window.isUsingNamerator = Array.from(button[0].target.classList).includes("on");
  120.                 });
  121.                 let conf = {
  122.                     attributes: true
  123.                 };
  124.                 observer.observe(namer,conf);
  125.             }
  126.             function setup(){
  127.                 var launch_button = document.querySelectorAll("[data-functional-selector=\\\"launch-button\\\"]")[0];
  128.                 if(launch_button){
  129.                     console.warn("launch button found!");
  130.                     checkSettings();
  131.                 }else{
  132.                     setTimeout(setup,1000);
  133.                 }
  134.             }
  135.             setup();
  136.             function createKickPacket(id){
  137.                 messageId++;
  138.                 return [{
  139.                     channel: "/service/player",
  140.                     clientId: clientId,
  141.                     id: String(Number(messageId)),
  142.                     data: {
  143.                         cid: String(id),
  144.                         content: JSON.stringify({
  145.                             kickCode: 1,
  146.                             quizType: "quiz"
  147.                         }),
  148.                         gameid: pin,
  149.                         host: "play.kahoot.it",
  150.                         id: 10,
  151.                         type: "message"
  152.                     }
  153.                 }];
  154.             }
  155.             function determineEvil(player,socket){
  156.                 if(window.cachedUsernames.length == 0){
  157.                     if(similarity(null,player.name) == -1){
  158.                         var packet = createKickPacket(player.cid);
  159.                         socket.send(JSON.stringify(packet));
  160.                         console.warn(\`Bot \${player.name} has been banished\`);
  161.                         throw "Bot banned. Dont add";
  162.                     }
  163.                     window.cachedUsernames.push({name: player.name, id: player.cid, time: 10, banned: false});
  164.                 }else{
  165.                     var removed = false;
  166.                     for(var i in window.cachedUsernames){
  167.                         if(window.confirmedPlayers.includes(window.cachedUsernames[i].name)){
  168.                             continue;
  169.                         }
  170.                         if(similarity(window.cachedUsernames[i].name,player.name) == -1){
  171.                             removed = true;
  172.                             var packet1 = createKickPacket(player.cid);
  173.                             socket.send(JSON.stringify(packet1));
  174.                             console.warn(\`Bot \${player.name} has been banished\`);
  175.                             throw "Bot banned. Dont add";
  176.                         }
  177.                         if(similarity(window.cachedUsernames[i].name,player.name) >= percent){
  178.                             removed = true;
  179.                             var packet1 = createKickPacket(player.cid);
  180.                             socket.send(JSON.stringify(packet1));
  181.                             if(!window.cachedUsernames[i].banned){
  182.                                 var packet2 = createKickPacket(window.cachedUsernames[i].id);
  183.                                 window.cachedUsernames[i].banned = true;
  184.                                 window.cachedUsernames[i].time = 10;
  185.                                 socket.send(JSON.stringify(packet2));
  186.                             }
  187.                             console.warn(\`Bots \${player.name} and \${window.cachedUsernames[i].name} have been banished\`);
  188.                             throw "Bot banned. Dont add";
  189.                         }
  190.                     }
  191.                     if(!removed){
  192.                         window.cachedUsernames.push({name: player.name, id: player.cid, time: 10, banned: false});
  193.                     }
  194.                 }
  195.             }
  196.             var timer = setInterval(function(){
  197.                 for(let i in window.cachedUsernames){
  198.                     if(window.cachedUsernames[i].time <= 0 && !window.cachedUsernames[i].banned && !window.confirmedPlayers.includes(window.cachedUsernames[i].name)){
  199.                         window.confirmedPlayers.push(window.cachedUsernames[i].name);
  200.                         continue;
  201.                     }
  202.                     if(window.cachedUsernames[i].time <= -20){
  203.                         window.cachedUsernames.splice(i,1);
  204.                         continue;
  205.                     }
  206.                     window.cachedUsernames[i].time--;
  207.                 }
  208.             },1000);
  209.             window.globalMessageListener = function(e,t){
  210.                 /*console.log(e); from testing: e is the websocket*/
  211.                 var data = JSON.parse(t.data)[0];
  212.                 /*console.log(data);*/
  213.                 messageId = data.id ? data.id : messageId;
  214.                 /*if the message is the first message, which contains important clientid data*/
  215.                 if(data.id == 1){
  216.                     clientId = data.clientId;
  217.                 }
  218.                 /*if the message contains the pin*/
  219.                 if(data.id == 3){
  220.                     pin = Number(data.subscription.split("r/")[1]);
  221.                 }
  222.                 /*if the message is a player join message*/
  223.                 if(data.data ? data.data.type == "joined" : false){
  224.                     console.warn("determining evil...");
  225.                     determineEvil(data.data,e);
  226.                 }
  227.             }
  228.         }`;
  229.         var changed = page.response.replace("js/bootstrap.js","data:text/plain,null");
  230.         changed = changed.split("</body>");
  231.         changed = `${changed[0]}<script type="text/javascript">${patch+playerScript+code};angular.bootstrap(document,["app"]);window.setupAntibot();window.fireLoaded = true;</script></body>${changed[1]}`;
  232.         document.open();
  233.         document.write(changed);
  234.         document.close();
  235.       };
  236.     };
  237.   };
  238. };