Ssh-chat, karolo ea 2

Lumela, Habr. Ena ke sengoloa sa 2 letotong la ssh-chat.

Seo re tla se etsa:

• Ha re eketse bokhoni ba ho iketsetsa mesebetsi ea moralo
• Ha re kenye ts'ehetso ea markdown
• Ha re kenye tšehetso ea bot
• Eketsa ts'ireletso ea password (hash le letsoai)
  Tšoarelo, empa lifaele ha li na ho romelloa.

Likarolo tsa moralo o ikhethileng

Hona joale, mesebetsi e latelang ea moralo e tšehetsoa:

• @color
• @bold
• @underline
• @hex
• @box
  Empa ho bohlokoa ho eketsa bokhoni ba ho iketsetsa mesebetsi ea hau:
  Mesebetsi eohle e bolokiloe ho объекте под названием methods
  Kahoo ho tla ba ho lekaneng ho etsa mosebetsi registerMethod:

// parserExec.js at end
module.exports.registerMethod  =  function(name, func) {
  methods[name] =  func
}

U boetse u hloka ho khutlisa mokhoa ona ka mor'a ho theha seva

// index.js at require part
const { registerMethod } = require('./parserExec')

// index.js at end
module.exports.registerMethod  =  registerMethod

Hona joale, ha re theha seva, re ka ngolisa mekhoa ea ho fomata. Mohlala:

const  chat  =  require('.')
const { formatNick } =  require('./format')

chat({})

chat.registerMethod('hello', function(p, name){
  return  'Hi, '  +  formatNick(name) +  '!'
})

Tšehetso ea Markdown

Markdown e bonolo haholo, ka hona, ha re e eketse re sebelisa terminal e tšoailoe

// format.js near require
const marked = require('marked');
const TerminalRenderer = require('marked-terminal');

marked.setOptions({
  renderer: new TerminalRenderer()
});

// format.js line 23
message = marked(message)

Botsana

E tla sebetsa joang

let writeBotBob = chat.registerBot({
  name: 'botBob',

  onConnect(nick, write){
    write('@hello{' + nick + '}')
  },

  onDisconnect(nick, write){},

  onMessage(nick, message, write) {
    if(message == 'botBob!') write('I'm here')
  },

  onCommand(command, write) {
    write('Doing ' + command)
  }
})

onCommand e ka bitsoa ho sebelisa @bot(botBob){Command}

Ntho e ngoe le e ngoe ea ho sebetsa le bots e hlalositsoe faeleng:

let bots = []; // Все боты

let onWrite = () => {}; 

function getWrite(bot) { // Генерирует метод отправки сообщения для бота
  return msg => {
    onWrite(bot.name, msg);
  };
}

module.exports.message = function message(nick, message) { // index.js выполнит эту функцию после отправки сообщения
  bots.forEach(bot => {
    try {
      bot.onMessage(nick, message, getWrite(bot));
    } catch (e) {
      console.error(e);
    }
  });
};

module.exports.connect = function message(nick) { // При соединении
  bots.forEach(bot => {
    try {
      bot.onConnect(nick, getWrite(bot));
    } catch (e) {
      console.error(e);
    }
  });
};

module.exports.disConnect = function message(nick) { // При отсоединении
  bots.forEach(bot => {
    try {
      bot.onDisconnect(nick, message, getWrite(bot));
    } catch (e) {
      console.error(e);
    }
  });
};

module.exports.command = function message(name, message) { // При выполнении команды
  bots.forEach(bot => {
    if (bot.name == name) {
      try {
        bot.onCommand(message, getWrite(bot));
      } catch (e) {
        console.error(e);
      }
    }
  });
};

module.exports.registerBot = function(bot) {
  bots.push(bot);
  return  getWrite(bot)
};

module.exports.onMessage = func => {
  onWrite = func;
};

Seo u ka se etsang ka bots:

• Laela leihlo
• Sebelisa
• Boto ea mosebetsi

Hash le letsoai

Hobaneng o sa ssh linotlolo? Hobane linotlolo tsa ssh li tla fapana ho lisebelisoa tse fapaneng
Ha re theheng faele e tla ba le boikarabello ba ho hlahloba le ho etsa li-password

// crypto.js
const crypto = require('crypto');

function genRandomString(length) {
  return crypto
    .randomBytes(Math.ceil(length / 2))
    .toString('hex')
    .slice(0, length);
}

function sha512(password, salt){
  const hash = crypto.createHmac('sha512', salt); /** Hashing algorithm sha512 */
  hash.update(password);
  const value = hash.digest('hex');
  return value
};

function checkPass(pass, obj){
  return obj.password == sha512(pass, obj.salt)
}

function encodePass(pass){
  const salt = genRandomString(16)
  return JSON.stringify({
    salt,
    password: sha512(pass, salt)
  })
}

module.exports.encodePass = encodePass
module.exports.checkPass = checkPass

Hape ke script bakeng sa salting le hashing password

// To generate password run node ./encryptPassword password
const { encodePass } =require('./crypto')
console.log(encodePass(process.argv[2]))

Re ntlafatsa ho users.json mme sebakeng sa ho bapisa ho lobby.js re sebelisa checkPassword

Phello

Ka lebaka leo, re na le moqoqo ka ssh ka bokhoni ba ho qapa le bots.
Sebaka sa ho qetela sa polokelo

Source: www.habr.com