Remove all bots from a kahoot game.
目前為
// ==UserScript==
// @name Kahoot AntiBot
// @namespace http://tampermonkey.net/
// @version 2.1.2
// @description Remove all bots from a kahoot game.
// @author theusaf
// @match *://play.kahoot.it/*
// @grant none
// @run-at document_start
// ==/UserScript==
window.stop(); //stop loading and save data from the page.
window.url = window.location.href;
window.kahootScript = null;
window.kahootScriptSrc = "https://play.kahoot.it/js/player.min.js?v=" + window.kahoot.version;
document.documentElement.innerHTML = "";
window.x = new XMLHttpRequest();
window.x.open("GET",kahootScriptSrc);
window.x.send();
window.x.onload = ()=>{ //load kahoot resources and edit code to allow access to the websockets
var fix = window.x.response.replace("i.onMessage=function(e,t){","i.onMessage=function(e,t){window.globalMessageListener(e,t);"); //edit code to be able to read all messages and access the websocket
//console.log(fix);
window.kahootScript = document.createElement("script");
window.kahootScript.innerHTML = fix;
var x = new XMLHttpRequest();
x.open("GET","https://play.kahoot.it/js/bootstrap.js");
x.send();
x.onload = ()=>{
var patch = x.response.replace(",$script([\"js/player.min.js?v\"+kahoot.version],function(){angular.bootstrap(document,[\"app\"])});","");
var pS = document.createElement("script");
pS.innerHTML = patch;
var x2 = new XMLHttpRequest();
x2.open("GET",url);
x2.send();
x2.onload = ()=>{
var fin = x2.response.replace("js/bootstrap.js","data:text/plain,null");
document.open();
document.write(fin);
document.close();
window.onload = ()=>{
document.body.append(pS);
document.body.append(window.kahootScript);
angular.bootstrap(document,["app"]); /*global angular*/
setupAntibot(); //win!
};
};
};
};
function setupAntibot(){
const percent = 0.6;
var waterMark = document.createElement("p");
waterMark.innerText = "v2.1.2 @theusaf";
waterMark.style = "position: fixed; bottom: 100px; right: 100px; font-size: 1em";
document.body.append(waterMark);
window.isUsingNamerator = false;
window.cachedUsernames = [];
window.confirmedPlayers = [];
var messageId = 0;
var clientId = null;
var pin = null;
function similarity(s1, s2) {
if(!s2){
return 0;
}
if(!isNaN(s2) && !isNaN(s1) && s1.length == s2.length){
return 1;
}
if(window.isUsingNamerator){
let caps = s2.length - s2.replace(/[A-Z]/g, '').length;
if(caps !== 2){ //has less than 2 or more than 2 capitals
return 1;
}
if (s2.substr(0,1).replace(/[A-Z]/g,'').length == 1){ //first char is not a capital
return 1;
}
if(s2.substr(s2.length - 1,1).replace(/[A-Z]/g,'').length == 0){ //last char is a capital
return 1;
}
if(s2.replace(/[a-z]/ig,'').length > 0){ //has non-letter chars
return 1;
}
}
if(!s1){
return;
}
s1 = s1.toLowerCase();
s2 = s2.toLowerCase();
var longer = s1;
var shorter = s2;
if (s1.length < s2.length) {
longer = s2;
shorter = s1;
}
var longerLength = longer.length;
if (longerLength == 0) {
return 1.0;
}
return (longerLength - editDistance(longer, shorter)) / parseFloat(longerLength);
}
function editDistance(s1, s2) {
s1 = s1.toLowerCase();
s2 = s2.toLowerCase();
var costs = new Array();
for (var i = 0; i <= s1.length; i++) {
var lastValue = i;
for (var j = 0; j <= s2.length; j++) {
if (i == 0){
costs[j] = j;
}
else {
if (j > 0) {
var newValue = costs[j - 1];
if (s1.charAt(i - 1) != s2.charAt(j - 1)){
newValue = Math.min(Math.min(newValue, lastValue),costs[j]) + 1;
}
costs[j - 1] = lastValue;
lastValue = newValue;
}
}
}
if (i > 0){
costs[s2.length] = lastValue;
}
}
return costs[s2.length];
}
function checkSettings(){
var namer = document.querySelectorAll("[data-functional-selector=\"game-settings-namerator-toggle\"]")[0];
window.isUsingNamerator = Array.from(namer.classList).includes("on");
let observer = new MutationObserver(function(button){
window.isUsingNamerator = Array.from(button[0].target.classList).includes("on");
});
let conf = {
attributes: true
};
observer.observe(namer,conf);
}
function setup(){
var launch_button = document.querySelectorAll("[data-functional-selector=\"launch-button\"]")[0];
if(launch_button){
console.warn("launch button found!");
checkSettings();
}else{
setTimeout(setup,1000);
}
}
setup();
function createKickPacket(id){
messageId++;
return [{
channel: "/service/player",
clientId: clientId,
id: String(Number(messageId)),
data: {
cid: String(id),
content: JSON.stringify({
kickCode: 1,
quizType: "quiz"
}),
gameid: pin,
host: "play.kahoot.it",
id: 10,
type: "message"
}
}];
}
function determineEvil(player,socket){
if(window.cachedUsernames.length == 0){
if(similarity(null,player.name) >= percent){
var packet = createKickPacket(player.cid);
socket.send(JSON.stringify(packet));
console.warn(`Bot ${player.name} has been banished`);
throw "Bot banned. Dont add";
}
window.cachedUsernames.push({name: player.name, id: player.cid, time: 10, banned: false});
}else{
var removed = false;
for(var i in window.cachedUsernames){
if(window.confirmedPlayers.includes(window.cachedUsernames[i].name)){
continue;
}
if(similarity(window.cachedUsernames[i].name,player.name) >= percent){
removed = true;
var packet1 = createKickPacket(player.cid);
socket.send(JSON.stringify(packet1));
if(!window.cachedUsernames[i].banned){
var packet2 = createKickPacket(window.cachedUsernames[i].id);
window.cachedUsernames[i].banned = true;
window.cachedUsernames[i].time = 10;
socket.send(JSON.stringify(packet2));
}
console.warn(`Bots ${player.name} and ${window.cachedUsernames[i].name} have been banished`);
throw "Bot banned. Dont add";
}
}
if(!removed){
window.cachedUsernames.push({name: player.name, id: player.cid, time: 10, banned: false});
}
}
}
var timer = setInterval(function(){
for(let i in window.cachedUsernames){
if(window.cachedUsernames[i].time <= 0 && !window.cachedUsernames[i].banned && !window.confirmedPlayers.includes(window.cachedUsernames[i].name)){
window.confirmedPlayers.push(window.cachedUsernames[i].name);
continue;
}
if(window.cachedUsernames[i].time <= -20){
window.cachedUsernames.splice(i,1);
continue;
}
window.cachedUsernames[i].time--;
}
},1000);
window.globalMessageListener = function(e,t){
//console.log(e); from testing: e is the websocket
var data = JSON.parse(t.data)[0];
//console.log(data);
messageId = data.id ? data.id : messageId;
//if the message is the first message, which contains important clientid data
if(data.id == 1){
clientId = data.clientId;
}
//if the message contains the pin
if(data.id == 3){
pin = Number(data.subscription.split("r/")[1]);
}
//if the message is a player join message
if(data.data ? data.data.type == "joined" : false){
console.warn("determining evil...");
determineEvil(data.data,e);
}
}
}