105 lines
3.3 KiB
JavaScript
105 lines
3.3 KiB
JavaScript
const WebSocket = require('ws');
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const ssh2 = require('ssh2');
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const http = require('http');
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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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});
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const wss = new WebSocket.Server({ server });
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wss.on('connection', (ws) => {
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console.log('WebSocket connection established');
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let conn = new ssh2.Client();
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let stream = null;
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let currentCols = 80;
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let currentRows = 24;
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let interval = null;
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const resizeTerminal = (cols, rows) => {
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if (stream && stream.setWindow) {
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stream.setWindow(rows, cols, rows * 100, cols * 100); // Adjust terminal size
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console.log(`Terminal resized successfully: cols=${cols}, rows=${rows}`);
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}
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};
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ws.on('message', (message) => {
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const messageStr = message.toString();
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let data;
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try {
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if (messageStr.trim().startsWith('{')) {
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data = JSON.parse(messageStr);
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} else if (stream && stream.writable) {
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stream.write(messageStr);
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return;
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}
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} catch (error) {
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console.error('Failed to process message:', error);
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return;
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}
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if (data?.host && data.port && data.username && data.password) {
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conn.on('ready', () => {
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console.log('SSH Connection established');
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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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}, 15000);
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conn.shell({ term: 'xterm', cols: currentCols, rows: currentRows }, (error, newStream) => {
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if (error) {
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console.error(`SSH Shell Error: ${error}`);
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ws.send(`Error: Could not establish a shell: ${error.message}`);
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return;
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}
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stream = newStream;
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stream.on('data', (chunk) => {
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ws.send(chunk.toString());
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});
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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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});
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}).on('error', (err) => {
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console.log('SSH Connection Error:', err);
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ws.send(`SSH Connection Error: ${err.message}`);
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}).connect({
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host: data.host,
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port: data.port,
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username: data.username,
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password: data.password,
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keepaliveInterval: 10000,
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keepaliveCountMax: 5,
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});
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} else if (data?.cols && data.rows) {
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currentCols = data.cols;
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currentRows = data.rows;
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resizeTerminal(currentCols, currentRows);
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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 (interval) {
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clearInterval(interval);
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}
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if (conn) {
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conn.end();
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}
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});
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});
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server.listen(8081, () => {
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console.log('WebSocket server is listening on ws://localhost:8081');
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}); |