IBM DB2のログインスクリプト

function login (email, password, callback) {
  var ibmdb = require("ibm_db");
  var bcrypt = require('bcrypt');
  var credentials = "";
  credentials += "DRIVER={DB2};";
  credentials += "DATABASE=SAMPLE;";
  credentials += "HOSTNAME=<db2host_url>;";
  credentials += "UID=<user_name>;";
  credentials += "PWD=<password>;";
  credentials += "PORT=50001;";
  credentials += "PROTOCOL=TCPIP";
  ibmdb.open(credentials, function(err, conn) {
    if (err) callback(new Error("Error while trying to connect to auth source"));
    conn.query("select * from =<user_name>.USERS where email='" + email + "'", function(err, data) {
      if (err) callback(new Error(err));
      else {
      if (!bcrypt.compareSync(password, data[0].PASSWORDHASH)) return;
      //map attributes to profile – sample below
      var profile = {
        user_id: data[0].ID,
        nickname: data[0].EMAIL,
        email: data[0].EMAIL,
        given_name : data[0].FIRSTNAME,
        family_name : data[0].LASTNAME
      };
      callback(null,profile);
      }
      conn.close(function() {
      });
    });
  });
}