nodejs irc bot

var net = require('net');
var http = require('http');



var HOST = 'irc.bsnet.se';          // The server we want to connect to
var PORT = 6667;                    // The connection port which is usually 6667
var NICK = 'wonderbot';                     // The bot's nickname
var IDENT = '****************';
var REALNAME = 'NODE.JS';
var CHANNEL = '#wonderlan';             // The default channel for the bot
var OWNER = 'djazz';

var lastfm = {
    username: 'ottoremse',
    apiKey: '37d771e988ae15a26ea733c48612a6df',
    secret: '4b0622860b5b89514b52a983dd63a98c',
    limit: 2
}

var lastfmUrl = 'http://ws.audioscrobbler.com/2.0/?method=user.getrecenttracks&user=' + lastfm.username + '&api_key=' + lastfm.apiKey + '&limit=' + lastfm.limit + '&format=json';

var cmdLock = false;

function sendMsg(msg) {
  console.log(msg);
  s.write(msg + '\r\n');
}
function sendChat(msg, chan) {
    chan = chan || CHANNEL;
    sendMsg('PRIVMSG '+chan+' :'+msg);
}

function scanPorts(ip, callback) {
    var list = [];
    var toScan = 0;
    console.log('scanning ip '+ip);
    for (var i = 0; i < 60000; i+=1000) {
        toScan+=1000;
        (function (i) {
            setTimeout(function () {
                //console.log('trying interval '+i);
                for (var k = 0; k < 1000; k++) {

                    var port = i+k;
                    (function (port) {
                        var client = net.connect({
                            host: ip,
                            port: port
                        }, function () {
                            console.log(ip+":"+port);
                            list.push(port);
                        });
                        client.on('error', function () {
                            //console.log(port)
                        });
                        client.on('close', function () {
                            toScan--;
                            if (toScan === 0) {
                                list.sort(function(a,b){return a-b});
                                //console.log(list);
                                callback(list);
                            }
                        });

                        setTimeout(function () {
                            client.destroy();
                        }, 300);
                    }(port));
                }
            }, (i/1000)*200);

        }(i));
    }
}

// Connect
// Create the socket  & Connect to the server
var s = net.connect(PORT, HOST, function () {

    // Send the nick to server
    sendMsg('NICK '+NICK);

    // Identify to server
    sendMsg('USER '+NICK+' '+HOST+' asdasdsdasd.com :'+REALNAME);

    sendMsg('JOIN ' + CHANNEL);

    /*setTimeout(function () {


        // This is my nick, i promise!
        sendMsg('PRIVMSG nick IDENTIFY '+IDENT);



    }, 20*1000);*/


    //sendChat('javascript');


});
s.on('data', function (data) {

    var lines = data.toString().split('\r\n');

    for (var i = 0; i < lines.length; i++) {
        console.log(lines[i]);
        var line = lines[i].split(' ');
        var row = line.slice(3).join(' ').replace(/\:/g, ' ').replace(/\,/g, ' ').replace(/\./g, ' ').replace(/\?/g, ' ').trim().toLowerCase().split(' ');

        if (line[0] === 'PING') {
            sendMsg('PONG '+line[1]);

        } else if (line[1] === 'PRIVMSG') {
            if(line[2] === CHANNEL && row.indexOf(NICK) !== -1) {
                var mentioner = line[0].split("!")[0].split(":")[1];

                if (line[3].indexOf(NICK) && line[4]) { // Command

                    if (line[4].length > 0) {
                        console.log('got command');
                        cmdLock = true;
                        switch(line[4]) { // Command name
                            case 'music':

                                console.log('music command');

                                http.get(lastfmUrl, function (res) {
                                    var data = "";
                                    res.on('data', function (chunk) {
                                        data += chunk.toString();
                                    });
                                    res.on('end', function () {
                                        track = JSON.parse(data).recenttracks.track[0];
                                        if (cmdLock) {
                                            sendChat("WonderLAN spelar låten "+track.name+" ("+track.url+")", line[2]);
                                        }
                                        cmdLock = false;
                                    });
                                }).on('error', function (e) {
                                    sendChat("Got error: " + e.message, line[2]);
                                    cmdLock = false;
                                });

                                break;

                            case 'scan':


                                console.log('scan command');

                                if (isNaN(+line[5])) {

                                    var ip = line[5];

                                    scanPorts(ip, function (scanlist) {
                                        sendChat("Scanned ip "+ip+" for open ports: "+scanlist.join(", "));

                                    });

                                } else {

                                    var startAddress = "194.47.158.";
                                    var port = +line[5] || 5357;
                                    var toScan = 0;
                                    var scanlist = [];

                                    console.log('scanning for port '+port);

                                    for (var i = 0; i < 256; i++) {
                                        toScan++;
                                        (function (i) {
                                            var client = net.connect({
                                                host: startAddress+i,
                                                port: port
                                            }, function () {
                                                console.log(startAddress+i+"\t:"+port);
                                                scanlist.push(i);

                                            });
                                            client.on('error', function () {});
                                            client.on('data', function (data) {
                                                console.log(data.toString());
                                            });
                                            client.on('close', function () {
                                                toScan--;
                                                if (toScan === 0) {
                                                    scanlist.sort(function(a,b){return a-b});
                                                    sendChat("Scanned port "+port+": 194.47.158.... "+scanlist.join(", "));

                                                }
                                            });
                                            setTimeout(function () {
                                                client.destroy();
                                            }, 300);
                                        }(i));
                                    }
                                }

                                break;

                            default:
                                cmdLock = false;
                                sendChat('Okänt kommando: '+line[4]);
                                break;
                        }
                    }

                } else { // Just normal mention
                    if (!line[4]) {
                        sendChat(mentioner+": Kommandon: music", line[2]);
                    }
                }

            } else if (line[2] === NICK) {
                var username = line[0].split("!")[0].substr(1);
                sendChat('Hello!', username);
            }

        }

    }

});