invisible.js

'use strict';
const url = 'mongodb://0.0.0.0:27017/';
const MongoClient = require('mongodb').MongoClient;
const key = 'sheeeeeeeiiiiiiittttttttttttttttttt';
const crypto = require( 'crypto' );

exports.encrypt = ( text ) => {
  let cipher = crypto.createCipher( 'aes-256-ctr', key );
  let crypted = cipher.update( text, 'utf8', 'hex' );
  crypted += cipher.final( 'hex' );
  return crypted;
};

exports.decrypt = ( text ) => {
  let decipher = crypto.createDecipher( 'aes-256-ctr', key );
  let dec = decipher.update( text, 'utf8', 'hex' );
  dec += decipher.final( 'hex' );
  return dec;
};

exports.random = ( min, max ) => {
  return Math.floor( Math.random() * ( max - min + 1 ) + min );
};

exports.find_user = ( q, callback ) => {
  let user;

  MongoClient.connect(url, ( err, db ) => {

    if ( !err ) {
      let Profiles = db.collection('Profiles');

      Profiles.find( q ).limit(1).toArray( ( err, item ) => {
        if ( !err ) {

          if (!item[0]) {
            callback( false, false );
          } else {
            callback( false, item[0] );
          }

        } else {
          callback( err, false)
          console.log( 'Failed to find user using query: ', q, '.\n' );
          console.log( err );
        }
      });

    db.close();

    } else {
      callback( err, false );
      console.log( 'Failed to connect to server' );
    }

  });
};

exports.home = ( req, res ) => {
  if ( !req.isAuthenticated() ) {
    res.redirect( '/login' );
  } else {
    res.render( 'world', {user: req.user} );
  }
};

exports.login = ( req, res ) => {
  if ( req.isAuthenticated() ) {
    res.render( 'login', { err: 'Your are currently logged in as ' + req.user.Name });
  } else {
    res.render( 'login' );
  }
};

exports.register = ( req, res ) => {
  if ( req.isAuthenticated() ) {
    res.render('register', {err: 'You are currently logged in as another user.'});
  } else {
    res.render('register');
  }
};

exports.register_post = ( req, res ) => {

  console.log( req.body.password )

  let new_user = {
    Name: req.body.username,
    Password: this.encrypt( req.body.password ),
    Color: req.body.color,
    Description: req.body.description
  };


  if ( /\//.test( req.body.username ) ) {

    res.render( 'register', { err: 'Usernames cannot contain "/".' } );

  } else {

    this.find_user( { Name: new_user.Name }, ( err, user ) => {
      if ( !err ) {
        if ( !user ) {

          MongoClient.connect(url, ( err, db ) => {
            if ( !err ) {

              db.collection( 'Profiles' ).insert( new_user, ( err, r ) => {
                if ( !err ) {
                  res.redirect( '/login' );
                } else {
                  res.render( 'register', { err: 'Registration failed due to an internal server error. Please try again later.' } );
                }
              });

              db.close();

            } else {
              console.log( 'Failed to connect to database' );
              console.log( err );
              res.render( 'register', { err: 'Registration failed due to an internal server error. Please try again later.' } );
            }
          });

        } else {
          res.render( 'register', { err: 'Username already exists.' } );
        }
      } else {
        res.render( 'register', { err: 'Registration failed due to an internal server error. Please try again later.' } );
      }
    });

  }

};