let adConfig = {
  url:'',
  baseDN: '',
  username: '',
  password: ''
}

const ActiveDirectory = require('activedirectory2').promiseWrapper
      , ad = new ActiveDirectory(adConfig)

module.exports = (params, callback) => {
   ad.authenticate(params.username, params.password).then((auth) => {
      if(auth) {
        // establish a session using express-session
        // return true
      }
   }
}