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