blessed-ssh2.js

#!/usr/bin/env node

/**
 * blessed-ssh2.js
 * https://github.com/chjj/blessed
 * Copyright (c) 2013-2015, Christopher Jeffrey (MIT License)
 * A blessed ssh2 server.
 * See: https://github.com/mscdex/ssh2
 */

process.title = 'blessed-ssh2';

var fs      = require('fs');
var path    = require('path');
var blessed = require('blessed');
var SSH2    = require('ssh2');

var server = SSH2.Server({
    hostKeys: [
        fs.readFileSync('/root/.ssh/id_rsa')
    ]
}, function (client) {

    client.on('authentication', function (ctx) {
        ctx.accept();
    });

    client.on('ready', function () {
        console.log('ready');
    });

    client.on('session', function (accept, reject) {
        var session = accept();

        var screen;
        var term;

        session.on('pty', function (accept, reject, info) {
            accept();
            term = info.term;
        });

        session.on('window-change', function (accept, reject, info) {
            accept();

            if (screen) {
                screen.cols = info.cols;
                screen.rows = info.rows;
            }
            session.emit('resize');
        });

        session.on('shell', function (accept, reject) {
            var stream = accept();

            var screen = blessed.screen({
                smartCSR:    true,
                terminal:    'xterm-256color',
                fullUnicode: true,
                input:       stream,
                output:      stream,
            });

            screen.on('destroy', function () {
                stream.exit(0);
                stream.end();
            });

            simpleTest(screen);
        });

        client.on('close', function () {
            if (screen && !screen.destroyed) {
                screen.destroy();
            }
        });

    });
});

function simpleTest(screen) {
    screen.data.main = blessed.box({
        parent:  screen,
        width:   '80%',
        height:  '90%',
        border:  'line',
        content: 'Welcome to my server. Here is your own private session.',
        style:   {
            bg: 'red'
        }
    });

    screen.key('i', function () {
        screen.data.main.style.bg = 'blue';
        screen.render();
    });

    screen.key(['C-c', 'q'], function (ch, key) {
        screen.destroy();
    });

    screen.render();
}

server.listen(2300);
console.log('Listening on 2300...');