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88 lines
2.8 KiB
88 lines
2.8 KiB
import express from 'express';
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import http from 'http';
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import https from 'https';
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import path from 'path';
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import server from 'socket.io';
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import { spawn } from 'node-pty';
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import EventEmitter from 'events';
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import favicon from 'serve-favicon';
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const app = express();
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app.use(favicon(`${__dirname}/public/favicon.ico`));
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// For using wetty at /wetty on a vhost
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app.get('/wetty/ssh/:user', (req, res) => {
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res.sendFile(`${__dirname}/public/wetty/index.html`);
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});
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app.get('/wetty/', (req, res) => {
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res.sendFile(`${__dirname}/public/wetty/index.html`);
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});
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// For using wetty on a vhost by itself
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app.get('/ssh/:user', (req, res) => {
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res.sendFile(`${__dirname}/public/wetty/index.html`);
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});
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app.get('/', (req, res) => {
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res.sendFile(`${__dirname}/public/wetty/index.html`);
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});
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// For serving css and javascript
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app.use('/', express.static(path.join(__dirname, 'public')));
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function createServer(port, sslopts) {
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return sslopts && sslopts.key && sslopts.cert
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? https.createServer(sslopts, app).listen(port, () => {
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console.log(`https on port ${port}`);
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})
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: http.createServer(app).listen(port, () => {
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console.log(`http on port ${port}`);
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});
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}
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function getCommand(socket, sshuser, sshhost, sshport, sshauth) {
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const { request } = socket;
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const match = request.headers.referer.match('.+/ssh/.+$');
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const sshAddress = sshuser ? `${sshuser}@${sshhost}` : sshhost;
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const ssh = match ? `${match[0].split('/ssh/').pop()}@${sshhost}` : sshAddress;
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return [
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process.getuid() === 0 && sshhost === 'localhost'
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? ['login', '-h', socket.client.conn.remoteAddress.split(':')[3]]
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: [
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path.join(__dirname, 'bin/ssh'),
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ssh,
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'-p',
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sshport,
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'-o',
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`PreferredAuthentications=${sshauth}`,
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],
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ssh,
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];
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}
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export default function start(port, sshuser, sshhost, sshport, sshauth, sslopts) {
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const events = new EventEmitter();
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const io = server(createServer(port, sslopts), { path: '/wetty/socket.io' });
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io.on('connection', socket => {
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console.log(`${new Date()} Connection accepted.`);
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const [args, ssh] = getCommand(socket, sshuser, sshhost, sshport, sshauth);
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const term = spawn('/usr/bin/env', args, {
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name: 'xterm-256color',
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cols: 80,
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rows: 30,
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});
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console.log(`${new Date()} PID=${term.pid} STARTED on behalf of user=${ssh}`);
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term.on('data', data => socket.emit('output', data));
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term.on('exit', code => {
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console.log(`${new Date()} PID=${term.pid} ENDED`);
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socket.emit('logout');
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events.emit('exit', code);
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});
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socket.on('resize', ({ col, row }) => term.resize(col, row));
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socket.on('input', input => term.write(input));
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socket.on('disconnect', () => {
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term.end();
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term.destroy();
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events.emit('disconnect');
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});
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});
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return events;
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}
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