Check the pin of a kahoot game.
目前為
// ==UserScript==
// @name KPin Checker
// @namespace http://tampermonkey.net/
// @homepage https://theusaf.org
// @version 1.3.7
// @license MIT
// @description Check the pin of a kahoot game.
// @author theusaf
// @match *://play.kahoot.it/*
// @exclude *://play.kahoot.it/v2/assets/*
// @icon https://kahoot-win.com/resource/img/game/medal/gold.svg
// @copyright 2020-2021, Daniel Lau (https://github.com/theusaf/kahoot-antibot)
// @grant none
// @run-at document-start
// ==/UserScript==
if (window.fireLoaded || (window.parent && window.parent.PinCheckerMain)) {
throw "[PIN-CHECKER] - Already loaded.";
}
console.log("[PIN-CHECKER] - Looking for AntiBot");
/**
* PinCheckerMain - The main pin checking function
*/
window.PinCheckerMain = function () {
function listenForTeamMode() {
document
.querySelector("[data-functional-selector=team-mode-card]")
.addEventListener("click", () => {
console.log("[PIN-CHECKER] - Entered team mode card.");
setTimeout(() => {
document
.querySelector(
"[data-functional-selector=launch-page] > div:nth-of-type(4) button"
)
.addEventListener("click", () => {
console.log("[PIN-CHECKER] - Listening again");
setTimeout(() => listenForTeamMode(), 250);
});
document
.querySelector("[data-functional-selector=start-team-mode-button]")
.addEventListener("click", () => {
console.log("[PIN-CHECKER] - Using team mode.");
windw.localStorage.PinCheckerMode = "team";
});
}, 250);
});
}
const windw = window.parent;
window.windw = windw;
const loader = setInterval(() => {
if (!document.querySelector("[data-functional-selector=team-mode-card]")) {
return;
}
console.log("[PIN-CHECKER] - Ready!");
clearInterval(loader);
listenForTeamMode();
if (document.querySelector("#antibotwtr")) {
const p = document.createElement("p");
p.innerHTML = "[KPC] v1.3.7";
document.querySelector("#antibotwtr").append(p);
}
if (windw.localStorage.PinCheckerAutoRelogin === "true") {
const waiter = setInterval(() => {
let a = document.querySelector(
"[data-functional-selector=classic-mode-card]"
);
if (windw.localStorage.PinCheckerMode === "team") {
a = document.querySelector(
"[data-functional-selector=team-mode-card]"
);
}
if (a && !a.disabled) {
const guestButton = document.querySelector(
"[data-functional-selector=play-as-guest-button]"
);
if (guestButton) {
guestButton.click();
}
a.click();
if (windw.localStorage.PinCheckerMode === "team") {
setTimeout(() => {
document
.querySelector(
"[data-functional-selector=start-team-mode-button]"
)
.click();
}, 250);
}
windw.localStorage.PinCheckerAutoRelogin = false;
if (
+windw.localStorage.PinCheckerLastQuizIndex <=
(
windw.specialData.kahootCore ||
windw.antibotData.kahootInternals.kahootCore
).game.core.playList.length
) {
(
windw.specialData.kahootCore ||
windw.antibotData.kahootInternals.kahootCore
).game.navigation.currentQuizIndex =
+windw.localStorage.PinCheckerLastQuizIndex || 0;
}
clearInterval(waiter);
delete windw.localStorage.PinCheckerMode;
delete windw.localStorage.PinCheckerLastQuizIndex;
// check for start button
}
}, 500);
} else {
delete windw.localStorage.PinCheckerMode;
}
}, 500);
windw.PinCheckerNameList = [];
windw.PinCheckerPin = null;
windw.PinCheckerSendIDs = {};
windw.specialData = windw.specialData || {};
windw.PinCheckerFalsePositive = false;
windw.PinCheckerFalsePositiveTimeout = null;
/**
* ResetGame - Reloads the page
*/
function ResetGame(message) {
if (windw.PinCheckerFalsePositive) {
return console.log(
"[PIN-CHECKER] - Detected false-positive broken pin. Not restarting."
);
}
console.error(message || "[PIN-CHECKER] - Pin Broken. Attempting restart.");
windw.localStorage.PinCheckerAutoRelogin = true;
windw.localStorage.PinCheckerLastQuizIndex = (
windw.specialData.kahootCore ||
windw.antibotData.kahootInternals.kahootCore
).game.navigation.currentQuizIndex;
windw.document.write(
"<scr" +
"ipt>" +
`window.location = "https://play.kahoot.it/v2/${windw.location.search}";` +
"</scr" +
"ipt>"
);
}
/**
* concatTokens - From kahoot.js.org. Combines the tokens.
*
* @param {String} headerToken decoded token
* @param {String} challengeToken decoded token 2
* @returns {String} The final token
*/
function concatTokens(headerToken, challengeToken) {
// Combine the session token and the challenge token together to get the string needed to connect to the websocket endpoint
let token = "";
for (let i = 0; i < headerToken.length; i++) {
const char = headerToken.charCodeAt(i),
mod = challengeToken.charCodeAt(i % challengeToken.length),
decodedChar = char ^ mod;
token += String.fromCharCode(decodedChar);
}
return token;
}
/**
* CreateClient - Creates a Kahoot! client to join a game
* This really only works because kahoot treats kahoot.it, play.kahoot.it, etc as the same thing.
*
* @param {Number} pin The gameid
*/
function CreateClient(pin) {
console.log("[PIN-CHECKER] - Creating client");
pin += "";
const SessionGetter = new XMLHttpRequest();
SessionGetter.open("GET", "/reserve/session/" + pin);
SessionGetter.send();
SessionGetter.onload = function () {
let SessionData;
try {
SessionData = JSON.parse(SessionGetter.responseText);
} catch (e) {
// probably not found
return ResetGame();
}
const TokenHeader = atob(
SessionGetter.getResponseHeader("x-kahoot-session-token")
);
let { challenge } = SessionData;
challenge = challenge.replace(/(\u0009|\u2003)/gm, "");
challenge = challenge.replace(/this /gm, "this");
challenge = challenge.replace(/ *\. */gm, ".");
challenge = challenge.replace(/ *\( */gm, "(");
challenge = challenge.replace(/ *\) */gm, ")");
challenge = challenge.replace("console.", "");
challenge = challenge.replace("this.angular.isObject(offset)", "true");
challenge = challenge.replace("this.angular.isString(offset)", "true");
challenge = challenge.replace("this.angular.isDate(offset)", "true");
challenge = challenge.replace("this.angular.isArray(offset)", "true");
const merger =
"var _ = {" +
" replace: function() {" +
" var args = arguments;" +
" var str = arguments[0];" +
" return str.replace(args[1], args[2]);" +
" }" +
"}; " +
"var log = function(){};" +
"return ",
solver = Function(merger + challenge),
ChallengeHeader = solver(),
FinalToken = concatTokens(TokenHeader, ChallengeHeader),
connection = new WebSocket(
"wss://play.kahoot.it/cometd/" + pin + "/" + FinalToken
),
timesync = {};
let shoken = false,
clientId = "",
mid = 2,
closed = false,
name = "";
connection.addEventListener("error", () => {
console.error(
"[PIN-CHECKER] - Socket connection failed. Assuming network connection is lost and realoading page."
);
ResetGame();
});
connection.addEventListener("open", () => {
connection.send(
JSON.stringify([
{
advice: {
interval: 0,
timeout: 60000,
},
minimumVersion: "1.0",
version: "1.0",
supportedConnectionTypes: ["websocket", "long-polling"],
channel: "/meta/handshake",
ext: {
ack: true,
timesync: {
l: 0,
o: 0,
tc: Date.now(),
},
},
id: 1,
},
])
);
});
connection.addEventListener("message", (m) => {
const { data } = m,
[message] = JSON.parse(data);
if (message.channel === "/meta/handshake" && !shoken) {
if (message.ext && message.ext.timesync) {
shoken = true;
clientId = message.clientId;
const { tc, ts, p } = message.ext.timesync,
l = Math.round((Date.now() - tc - p) / 2),
o = ts - tc - l;
Object.assign(timesync, {
l,
o,
get tc() {
return Date.now();
},
});
connection.send(
JSON.stringify([
{
advice: { timeout: 0 },
channel: "/meta/connect",
id: 2,
ext: {
ack: 0,
timesync,
},
clientId,
},
])
);
// start joining
setTimeout(() => {
name = "KCP_" + (Date.now() + "").substr(2);
connection.send(
JSON.stringify([
{
clientId,
channel: "/service/controller",
id: ++mid,
ext: {},
data: {
gameid: pin,
host: "play.kahoot.it",
content: JSON.stringify({
device: {
userAgent: windw.navigator.userAgent,
screen: {
width: windw.screen.width,
height: windw.screen.height,
},
},
}),
name,
type: "login",
},
},
])
);
}, 1000);
}
} else if (message.channel === "/meta/connect" && shoken && !closed) {
connection.send(
JSON.stringify([
{
channel: "/meta/connect",
id: ++mid,
ext: {
ack: message.ext.ack,
timesync,
},
clientId,
},
])
);
} else if (message.channel === "/service/controller") {
if (message.data && message.data.type === "loginResponse") {
if (message.data.error === "NONEXISTING_SESSION") {
// session doesn't exist
connection.send(
JSON.stringify([
{
channel: "/meta/disconnect",
clientId,
id: ++mid,
ext: {
timesync,
},
},
])
);
connection.close();
ResetGame();
} else {
// Check if the client is in the game after 10 seconds
setTimeout(() => {
if (!windw.PinCheckerNameList.includes(name)) {
// Uh oh! the client didn't join!
ResetGame();
}
}, 10e3);
// good. leave the game.
connection.send(
JSON.stringify([
{
channel: "/meta/disconnect",
clientId,
id: ++mid,
ext: {
timesync,
},
},
])
);
closed = true;
setTimeout(() => {
connection.close();
}, 500);
}
}
} else if (message.channel === "/service/status") {
if (message.data.status === "LOCKED") {
// locked, cannot test
console.log("[PIN-CHECKER] - Game is locked. Unable to test.");
closed = true;
connection.send(
JSON.stringify([
{
channel: "/meta/disconnect",
clientId,
id: ++mid,
ext: {
timesync,
},
},
])
);
setTimeout(() => {
connection.close();
}, 500);
}
}
});
};
}
windw.PinCheckerInterval = setInterval(() => {
if (windw.PinCheckerPin) {
CreateClient(windw.PinCheckerPin);
}
}, 60 * 1000);
/**
* PinCheckerSendInjector
* - Checks the sent messages to ensure events are occuring
* - This is a small fix for a bug in Kahoot.
*
* @param {String} data The sent message.
*/
windw.PinCheckerSendInjector = function (data) {
data = JSON.parse(data)[0];
const n = Date.now();
let content = {};
try {
content = JSON.parse(data.data.content);
} catch (e) {
/* likely no content */
}
if (data.data && typeof data.data.id !== "undefined") {
for (const i in windw.PinCheckerSendIDs) {
windw.PinCheckerSendIDs[i].add(data.data.id);
}
// content slides act differently, ignore them
if (content.gameBlockType === "content") {
return;
}
/**
* Checks for events and attempts to make sure that it succeeds (doesn't crash)
* - deprecated, kept in just in case for the moment
*
* @param {Number} data.data.id The id of the action
*/
switch (data.data.id) {
case 9: {
windw.PinCheckerSendIDs[n] = new Set();
setTimeout(() => {
if (!windw.PinCheckerSendIDs[n].has(1)) {
// Restart, likely stuck
ResetGame(
"[PIN-CHECKER] - Detected stuck on loading screen. Reloading the page."
);
} else {
delete windw.PinCheckerSendIDs[n];
}
}, 60e3);
break;
}
case 1: {
windw.PinCheckerSendIDs[n] = new Set();
setTimeout(() => {
if (!windw.PinCheckerSendIDs[n].has(2)) {
// Restart, likely stuck
ResetGame(
"[PIN-CHECKER] - Detected stuck on get ready screen. Reloading the page."
);
} else {
delete windw.PinCheckerSendIDs[n];
}
}, 60e3);
break;
}
case 2: {
windw.PinCheckerSendIDs[n] = new Set();
// wait up to 5 minutes, assume something wrong
setTimeout(() => {
if (
!windw.PinCheckerSendIDs[n].has(4) &&
!windw.PinCheckerSendIDs[n].has(8)
) {
// Restart, likely stuck
ResetGame(
"[PIN-CHECKER] - Detected stuck on question answer. Reloading the page."
);
} else {
delete windw.PinCheckerSendIDs[n];
}
}, 300e3);
break;
}
}
}
};
/**
* CloseError
* - Used when the game is closed and fails to reconnect properly
*/
windw.CloseError = function () {
ResetGame("[PIN-CHECKER] - Detected broken disconnected game, reloading!");
};
};
/**
* PinCheckerInjector - Checks messages and stores the names of players who joined within the last few seconds
*
* @param {String} message The websocket message
*/
window.PinCheckerInjector = function (socket, message) {
function PinCheckerFalsePositiveReset() {
windw.PinCheckerFalsePositive = true;
clearTimeout(windw.PinCheckerFalsePositiveTimeout);
windw.PinCheckerFalsePositiveTimeout = setTimeout(function () {
windw.PinCheckerFalsePositive = false;
}, 15e3);
}
const windw = window.parent,
data = JSON.parse(message.data)[0];
if (!socket.webSocket.PinCheckClose) {
socket.webSocket.PinCheckClose = socket.webSocket.onclose;
socket.webSocket.onclose = function () {
socket.webSocket.PinCheckClose();
setTimeout(() => {
const StillNotConnected = document.querySelector(
"[data-functional-selector=\"disconnected-page\"]"
);
if (StillNotConnected) {
windw.CloseError();
}
}, 30e3);
};
}
if (!socket.webSocket.PinCheckSend) {
if (windw.page) {
// Antibot exists, don't overwrite.
if (socket.webSocket.oldSend) {
socket.webSocket.PinCheckSend = socket.webSocket.oldSend;
socket.webSocket.AntiBotSendData = socket.webSocket.send;
socket.webSocket.send = function (data) {
windw.PinCheckerSendInjector(data);
socket.webSocket.AntiBotSendData(data);
};
}
return;
}
socket.webSocket.PinCheckSend = socket.webSocket.send;
socket.webSocket.send = function (data) {
windw.PinCheckerSendInjector(data);
socket.webSocket.PinCheckSend(data);
};
}
try {
const part =
document.querySelector("[data-functional-selector=\"game-pin\"]") ||
document.querySelector(
"[data-functional-selector=\"bottom-bar-game-pin\"]"
);
if (
Number(part.innerText) != windw.PinCheckerPin &&
Number(part.innerText) != 0 &&
!isNaN(Number(part.innerText))
) {
windw.PinCheckerPin = Number(part.innerText);
console.log("[PIN-CHECKER] - Discovered new PIN: " + windw.PinCheckerPin);
} else if (Number(part.innerText) == 0 || isNaN(Number(part.innerText))) {
windw.PinCheckerPin = null;
console.log(
"[PIN-CHECKER] - PIN is hidden or game is locked. Unable to test."
);
}
} catch (err) {
/* Unable to get pin, hidden */
}
if (data.data && data.data.type === "joined") {
PinCheckerFalsePositiveReset();
windw.PinCheckerNameList.push(data.data.name);
setTimeout(() => {
// remove after 20 seconds (for performance)
windw.PinCheckerNameList.splice(0, 1);
}, 20e3);
} else if (data.data && data.data.id === 45) {
PinCheckerFalsePositiveReset();
}
};
function createBlobURL(script) {
return URL.createObjectURL(
new Blob([script], { type: "application/javascript" })
);
}
if (!window.kantibotEnabled && !window.page) {
document.write(
"<p id=\"pin-checker-loading-notice\">[PIN-CHECKER] - Patching Kahoot. Please wait.</p><p>If this screen stays blank for a long time, report an issue in <a href=\"https://discord.gg/pPdvXU6\">Discord</a>, <a href=\"https://github.com/theusaf/kantibot\">GitHub</a>, or <a href=\"https://greasyfork.org/en/scripts/392154-kpin-checker\">Greasyfork</a>.</p>"
);
const page = new XMLHttpRequest();
page.open("GET", location.href);
page.send();
page.onload = function () {
const [scriptURL] = page.response.match(
/\/\/assets-cdn.*\/v2\/assets\/vendor.*?(?=")/
),
[script2] = page.response.match(
/\/\/assets-cdn.*\/v2\/assets\/index.*?(?=")/
),
originalPage = page.response
.replace(/<script type="module".*?<\/script>/, "")
.replace(/<link type="modulepreload".*?>/gm, ""),
script = new XMLHttpRequest();
script.open("GET", scriptURL);
script.send();
script.onload = () => {
const patchedScriptRegex = /\.onMessage=function\([$\w]+,[$\w]+\)\{/,
[letter1] = script.response
.match(patchedScriptRegex)[0]
.match(/[$\w]+(?=,)/),
[letter2] = script.response
.match(patchedScriptRegex)[0]
.match(/[$\w]+(?=\))/),
patchedScript = script.response.replace(
script.response.match(patchedScriptRegex)[0],
`.onMessage=function(${letter1},${letter2}){window.globalMessageListener(${letter1},${letter2});`
),
mainScript = new XMLHttpRequest();
mainScript.open("GET", script2);
mainScript.send();
mainScript.onload = () => {
let { response: sc } = mainScript;
// Access the core data
const cr = /[$\w]+\.game\.core/,
letter6 = sc.match(cr)[0].match(/[$\w]+(?=\.game)/)[0];
sc = sc.replace(
cr,
`(()=>{
if (typeof windw !== "undefined") {
windw.specialData.kahootCore = ${letter6};
}
return ${letter6}.game.core;
})()`
);
// fix imports
const vendorsBlobURL = createBlobURL(patchedScript);
sc = sc.replace(
/from".\/vendor.*?";/,
`from"${vendorsBlobURL}";URL.revokeObjectURL("${vendorsBlobURL}");`
);
sc = sc.replace(
/import\("\./gm,
"import(\"https://assets-cdn.kahoot.it/player/v2/assets/"
);
const mainBlobURL = createBlobURL(sc);
let changed = originalPage.split("</body>");
changed = `${changed[0]}
<script>
import("${mainBlobURL}").then(() => {
URL.revokeObjectURL("${mainBlobURL}");
});
</script>
<script>
window.globalMessageListener=${window.PinCheckerInjector.toString()};
(${window.PinCheckerMain.toString()})();
try{(${window.localStorage.kahootThemeScript})();}catch(err){}
window.fireLoaded = window.parent.fireLoaded = true;
</script>
</body>${changed[1]}`;
console.log("[PIN-CHECKER] - loaded");
document.open();
document.write(
"<style>body{margin:0;}iframe{border:0;width:100%;height:100%;}</style><iframe src=\"about:blank\"></iframe>"
);
document.close();
window.stop();
const doc = document.querySelector("iframe");
doc.contentDocument.write(changed);
document.title = doc.contentDocument.title;
doc.addEventListener("load", () => {
window.location.reload();
});
};
};
};
} else {
console.warn("[PIN-CHECKER] - found AntiBot, waiting for injection");
window.localStorage.extraCheck = window.PinCheckerMain.toString();
window.localStorage.extraCheck2 = window.PinCheckerInjector.toString();
}