Full return back to old code with minor fixes
This commit is contained in:
LukeGus
@@ -1,91 +1,100 @@
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const WebSocket = require('ws');
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const SSH = require('ssh2-promise');
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const ssh2 = require('ssh2');
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const http = require('http');
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// Create an HTTP server to serve WebSocket connections
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const server = http.createServer((req, res) => {
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res.writeHead(200, { 'Content-Type': 'text/plain' });
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res.end('WebSocket server is running\n');
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res.writeHead(200, { 'Content-Type': 'text/plain' });
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res.end('WebSocket server is running\n');
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});
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// Create a WebSocket server attached to the HTTP server
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const wss = new WebSocket.Server({ server });
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// WebSocket connection handling
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wss.on('connection', (ws) => {
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console.log('WebSocket connection established');
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console.log('WebSocket connection established');
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let ssh = null;
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let termDimensions = { rows: 0, cols: 0, height: 0, weight: 0 };
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ws.on('message', async (message) => {
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try {
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const data = JSON.parse(message);
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if (data.type === 'resize') {
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termDimensions = data;
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} else if (data.username && data.password) {
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ssh = new SSH({
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host: data.host,
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username: data.username,
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password: data.password
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});
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let conn = null; // Declare SSH client outside to manage lifecycle
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ws.on('message', (message) => {
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try {
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await ssh.connect();
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const stream = await ssh.shell();
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const data = JSON.parse(message); // Try parsing the incoming message as JSON
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stream.on('data', (data) => {
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const dataString = data.toString();
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ws.send(dataString);
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});
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// Check if message contains SSH connection details
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if (data.host && data.username && data.password) {
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if (conn) {
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conn.end(); // Close any previous connection before starting a new one
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}
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stream.stderr.on('data', (data) => {
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const errorString = data.toString();
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console.error('SSH error:', errorString);
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});
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conn = new ssh2.Client(); // Create a new SSH connection instance
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ws.on('message', (message) => {
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try {
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const data = JSON.parse(message);
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if (data.type === 'resize') {
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termDimensions = data;
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}
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} catch (err) {
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stream.write(message);
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// When the SSH connection is ready
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conn.on('ready', () => {
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console.log('SSH Connection established');
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// Start an interactive shell session
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conn.shell((err, stream) => {
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if (err) {
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console.log(`SSH Error: ${err}`);
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ws.send(`Error: ${err}`);
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return;
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}
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// Handle data from SSH session
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stream.on('data', (data) => {
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console.log(`SSH Output: ${data}`);
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ws.send(data.toString()); // Send the SSH output back to WebSocket client
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});
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// Handle stream close event
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stream.on('close', () => {
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console.log('SSH stream closed');
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conn.end();
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});
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// When the WebSocket client sends a message (from terminal input), forward it to the SSH stream
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ws.on('message', (message) => {
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console.log(`Received message from WebSocket: ${message}`);
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stream.write(message); // Write the message (input) to the SSH shell
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});
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});
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}).on('error', (err) => {
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console.log('SSH Connection Error: ', err);
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ws.send(`SSH Error: ${err}`);
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}).connect({
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host: data.host, // Host provided from the client
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port: 22, // Default SSH port
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username: data.username, // Username provided from the client
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password: data.password, // Password provided from the client
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keepaliveInterval: 10000, // Send a heartbeat every 10 seconds
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keepaliveCountMax: 5, // Allow three missed heartbeats before considering the connection dead
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});
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}
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} catch (error) {
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// If message is not valid JSON (i.e., terminal input), treat it as raw text and send it to SSH
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console.log('Received non-JSON message, sending to SSH session:', message);
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if (conn) {
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const stream = conn._stream; // Access the SSH stream directly
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if (stream && stream.writable) {
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stream.write(message); // Write raw input message to SSH stream
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}
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} else {
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console.error('SSH connection is not established yet.');
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}
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});
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stream.on('close', () => {
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console.log('Stream closed');
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ssh.close();
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});
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} catch (err) {
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console.error('SSH connection error:', err);
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}
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}
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} catch (err) {
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console.error('Message processing error:', err);
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}
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});
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});
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ws.on('close', () => {
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console.log('WebSocket closed');
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if (ssh) {
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ssh.close();
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}
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});
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ws.on('error', (err) => {
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console.error('WebSocket error:', err);
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});
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// Ping-pong is used to keep the connection alive.
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const interval = setInterval(() => {
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if (ws.readyState === WebSocket.OPEN) {
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ws.ping();
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} else {
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clearInterval(interval);
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}
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}, 5000);
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// Handle WebSocket close event
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ws.on('close', () => {
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console.log('WebSocket closed');
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if (conn) {
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conn.end(); // Close SSH connection when WebSocket client disconnects
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}
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});
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});
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// Start the WebSocket server on port 8081
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server.listen(8081, () => {
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console.log('Server listening on port 8081');
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console.log('WebSocket server is listening on ws://localhost:8081');
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});
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