serverline-sim/src/modules/sshd.ts

import telnet from 'telnet';

import { exec } from '@kernel:base';

export default {
  start() {
    var telnet = require('telnet');

    telnet.createServer(function (client: any) {
   
      // make unicode characters work properly
      client.do.transmit_binary()
    
      // make the client emit 'window size' events
      client.do.window_size()
    
      // listen for the window size events from the client
      client.on('window size', function (e: any) {
        if (e.command === 'sb') {
          console.log('telnet window resized to %d x %d', e.width, e.height)
        }
      })
    
      // listen for the actual data from the client
      client.on('data', function (b: any) {
        exec(b);
        client.write(b)
      })
    
      client.write('connected to Telnet server!')
    
    }).listen(23)
  }
}