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const path = require('node:path');
const express = require('express');
const morgan = require('morgan');
const puppeteer = require('puppeteer');
const HOST = process.env.HOST ?? '127.0.0.1';
const PORT = process.env.PORT ?? '1337';
const FLAG = process.env.FLAG ?? 'CSCG{fake_flag}';
const BOT_TIMEOUT = Number(process.env.BOT_TIMEOUT || 60000);
const PAGE_URL = `http://localhost:${PORT}`;
const app = express();
app.use(morgan('common'));
app.use(express.static(path.join(__dirname, 'static')));
app.get('/report', express.json(), (req, res) => {
const { code = '' } = req.query;
visit(code);
res.status(204).end();
});
app.listen(PORT, HOST, () => console.log(`Listening on ${HOST}:${PORT}`));
async function visit(code) {
try {
const url = new URL(PAGE_URL);
const browser = await puppeteer.launch({
args: [ '--no-sandbox' ],
headless: false //'old',
});
console.log('Placing flag');
const page = await browser.newPage();
await page.goto(url.toString());
await page.evaluate((flag) => localStorage.setItem('flag', flag), FLAG);
await page.close();
url.searchParams.set('code', code);
console.log(`Visiting ${url}`);
const playerPage = await browser.newPage();
setTimeout(() => browser.close(), BOT_TIMEOUT * 1000);
await playerPage.goto(url.toString());
} catch (error) {
console.error(error);
}
}
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