ssh-talatalanoa vaega 2

Talofa, Habr. Ole tala lona lua lea ile ssh-chat series.

O le a tatou faia:

• Se'i o tatou fa'aopoopo le tomai e fai ai au lava galuega fa'atino
• Se'i o tatou fa'aopoopoina le lagolago fa'ailoga
• Se'i o tatou fa'aopoopoina le lagolago a bot
• Fa'ateleina le saogalemu o upu fa'aoga (hash ma masima)
  Faamalie atu, ae o le a leai se auina atu o faila

Fa'ailoga fa'ailoga fa'apitoa

I le taimi nei, o lo'o lagolagoina galuega fa'atino nei:

• @color
• @bold
• @underline
• @hex
• @box
  Ae e aoga le faʻaopoopoina o le tomai e fai ai au lava galuega:
  O galuega uma e teuina i totonu объекте под названием methods
  O lea o le a lava lea e fai ai se galuega registerMethod:

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

E te manaʻomia foʻi le toe faʻafoʻi mai o lenei metotia pe a uma ona fai le server

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

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

I le taimi nei, pe a fatuina se 'auʻaunaga, e mafai ona matou resitalaina metotia faʻatulagaina. Faataitaiga:

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

chat({})

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

Markdown lagolago

Markdown e faigofie tele, o lea tatou faʻaopoopo faʻaaoga fa'ailoga fa'ailoga

// 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)

Potu

E faapefea ona aoga

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 mafai ona taʻua o le faʻaaogaina @bot(botBob){Command}

O mea uma mo le galue ma bots o loʻo faʻamatalaina i le faila:

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;
};

O mea e mafai ona e faia i bots:

• Fua uta
• Faʻafaigaluegaina
• Laupapa galuega

Hash ma masima

Aisea e le ssh ki? Aua o ssh ki o le a ese i masini eseese
Sei o tatou faia se faila e nafa ma le siakiina ma le fatuina o upu faataga

// 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

Fa'apea fo'i ma se fa'amatalaga mo le fa'amasima ma fa'asalaina le fa'aupuga

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

Matou te faʻafouina i users.json ae nai lo le faʻatusatusa i lobby.js matou te faʻaogaina le checkPassword

Le iʻuga

O le iʻuga, o loʻo i ai a matou talatalanoaga e ala i le ssh ma faʻataʻitaʻiga gafatia ma bots.
Fa'amaumauga mulimuli

puna: www.habr.com