Files
linkweb/server.js
T
2026-05-15 00:15:40 +01:00

72 lines
1.9 KiB
JavaScript

import crypto from 'node:crypto';
import { execFile } from 'node:child_process';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import express from 'express';
const __dirname = path.dirname(fileURLToPath(import.meta.url));
const app = express();
const port = Number(process.env.PORT || 3020);
const webhookPath = process.env.WEBHOOK_PATH || '/webhook/github';
const webhookSecret = process.env.WEBHOOK_SECRET || '';
const pm2AppName = process.env.PM2_APP_NAME || 'linkweb';
const pm2Command = process.env.PM2_BIN || (process.platform === 'win32' ? 'pm2.cmd' : 'pm2');
function verifyGitHubSignature(req) {
if (!webhookSecret) {
return true;
}
const signature = req.get('x-hub-signature-256');
if (!signature?.startsWith('sha256=')) {
return false;
}
const digest = `sha256=${crypto
.createHmac('sha256', webhookSecret)
.update(req.body)
.digest('hex')}`;
const received = Buffer.from(signature);
const expected = Buffer.from(digest);
return received.length === expected.length && crypto.timingSafeEqual(received, expected);
}
app.post(webhookPath, express.raw({ type: '*/*' }), (req, res) => {
if (!verifyGitHubSignature(req)) {
res.status(401).json({ ok: false, error: 'Invalid webhook signature' });
return;
}
res.status(202).json({ ok: true, restarting: pm2AppName });
execFile(pm2Command, ['restart', pm2AppName], (error, stdout, stderr) => {
if (error) {
console.error('PM2 restart failed:', error.message);
if (stderr) {
console.error(stderr);
}
return;
}
if (stdout) {
console.log(stdout);
}
});
});
app.get('/healthz', (_req, res) => {
res.json({ ok: true });
});
app.use(express.static(path.join(__dirname, 'dist')));
app.use((_req, res) => {
res.sendFile(path.join(__dirname, 'dist', 'index.html'));
});
app.listen(port, () => {
console.log(`Toothless' Bot Home listening on port ${port}`);
});