Connecting to remote SSH server (via Node.js/html5 console)

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I have been scouring the face of the web looking to answer a question which I had thought would be simple. My goal is straight forward. I want to build out a simple web-base

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2条回答

感动是毒

2020-12-01 03:50

This is easily doable with modules like ssh2, xterm, and socket.io.

Here's an example:

npm install ssh2 xterm socket.io
Create index.html:

<html>
  <head>
    <title>SSH Terminal</title>
    <link rel="stylesheet" href="/src/xterm.css" />
    <script src="/src/xterm.js"></script>
    <script src="/addons/fit/fit.js"></script>
    <script src="/socket.io/socket.io.js"></script>
    <script>
      window.addEventListener('load', function() {
        var terminalContainer = document.getElementById('terminal-container');
        var term = new Terminal({ cursorBlink: true });
        term.open(terminalContainer);
        term.fit();

        var socket = io.connect();
        socket.on('connect', function() {
          term.write('\r\n*** Connected to backend***\r\n');

          // Browser -> Backend
          term.on('data', function(data) {
            socket.emit('data', data);
          });

          // Backend -> Browser
          socket.on('data', function(data) {
            term.write(data);
          });

          socket.on('disconnect', function() {
            term.write('\r\n*** Disconnected from backend***\r\n');
          });
        });
      }, false);
    </script>
    <style>
      body {
        font-family: helvetica, sans-serif, arial;
        font-size: 1em;
        color: #111;
      }
      h1 {
        text-align: center;
      }
      #terminal-container {
        width: 960px;
        height: 600px;
        margin: 0 auto;
        padding: 2px;
      }
      #terminal-container .terminal {
        background-color: #111;
        color: #fafafa;
        padding: 2px;
      }
      #terminal-container .terminal:focus .terminal-cursor {
        background-color: #fafafa;
      }
    </style>
  </head>
  <body>
    <div id="terminal-container"></div>
  </body>
</html>

Create server.js:

var fs = require('fs');
var path = require('path');
var server = require('http').createServer(onRequest);

var io = require('socket.io')(server);
var SSHClient = require('ssh2').Client;

// Load static files into memory
var staticFiles = {};
var basePath = path.join(require.resolve('xterm'), '..');
[ 'addons/fit/fit.js',
  'src/xterm.css',
  'src/xterm.js'
].forEach(function(f) {
  staticFiles['/' + f] = fs.readFileSync(path.join(basePath, f));
});
staticFiles['/'] = fs.readFileSync('index.html');

// Handle static file serving
function onRequest(req, res) {
  var file;
  if (req.method === 'GET' && (file = staticFiles[req.url])) {
    res.writeHead(200, {
      'Content-Type': 'text/'
                      + (/css$/.test(req.url)
                         ? 'css'
                         : (/js$/.test(req.url) ? 'javascript' : 'html'))
    });
    return res.end(file);
  }
  res.writeHead(404);
  res.end();
}

io.on('connection', function(socket) {
  var conn = new SSHClient();
  conn.on('ready', function() {
    socket.emit('data', '\r\n*** SSH CONNECTION ESTABLISHED ***\r\n');
    conn.shell(function(err, stream) {
      if (err)
        return socket.emit('data', '\r\n*** SSH SHELL ERROR: ' + err.message + ' ***\r\n');
      socket.on('data', function(data) {
        stream.write(data);
      });
      stream.on('data', function(d) {
        socket.emit('data', d.toString('binary'));
      }).on('close', function() {
        conn.end();
      });
    });
  }).on('close', function() {
    socket.emit('data', '\r\n*** SSH CONNECTION CLOSED ***\r\n');
  }).on('error', function(err) {
    socket.emit('data', '\r\n*** SSH CONNECTION ERROR: ' + err.message + ' ***\r\n');
  }).connect({
    host: '192.168.100.105',
    username: 'foo',
    password: 'barbaz'
  });
});

server.listen(8000);

Edit the SSH server configuration passed to .connect() in server.js
node server.js
Visit http://localhost:8000 in your browser

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难免孤独

2020-12-01 04:00

Try also noVnc. However, a little dig within the page of xterm.js reveals other solutions, like

WebSSH2

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