exports.login = function()

in api/services/protocols/local.js [136:186]

• 45 lines of code
• 8 McCabe index (conditional complexity)

exports.login = function (req, identifier, password, next) {
  var isEmail = validator.isEmail(identifier)
    , query   = {};

  if (isEmail) {
    query.email = identifier;
  }
  else {
    query.username = identifier;
  }

  User.findOne(query, function (err, user) {
    if (err) {
      return next(err);
    }

    if (!user) {
      if (isEmail) {
        req.flash('error', 'Error.Passport.Email.NotFound');
      } else {
        req.flash('error', 'Error.Passport.Username.NotFound');
      }

      return next(null, false);
    }

    Passport.findOne({
      protocol : 'local'
    , user     : user.id
    }, function (err, passport) {
      if (passport) {
        passport.validatePassword(password, function (err, res) {
          if (err) {
            return next(err);
          }

          if (!res) {
            req.flash('error', 'Error.Passport.Password.Wrong');
            return next(null, false);
          } else {
            return next(null, user);
          }
        });
      }
      else {
        req.flash('error', 'Error.Passport.Password.NotSet');
        return next(null, false);
      }
    });
  });
};