ad.js

ad.findUserAsync(login)
  .then(function(user){
    return ad.authenticateAsync(user.mail, password);
  })
  .then(function(auth){
    if(!auth) res.status(403).send({"message": "user not authenticated"});
    res.status(200).send({"message": "user authenticated","data": user});
  })
  .catch(function(err){
    return next(err);
  });