LoginService.java

package at.intelligentminds.service;

import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

import javax.ws.rs.FormParam;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

import org.hibernate.Transaction;

import at.intelligentminds.service.model.HibernateSupport;
import at.intelligentminds.service.model.User;

@Path("/userservice")
public class LoginService {

  private static Map<String, User> userTokens = new HashMap<String, User>();

  @Path("/login")
  @POST
  @Produces(MediaType.TEXT_PLAIN)
  public String login(@FormParam("email") String email, @FormParam("password") String password) {

    try {
      Transaction tx = HibernateSupport.getSession().beginTransaction();
      User user = (User) HibernateSupport.getSession().get(User.class, email);
      tx.commit();

      if (user != null) {
        try {
          if (PasswordHash.validatePassword(password.toCharArray(), user.getPwHash())) {
            String random_uuid = UUID.randomUUID().toString().toUpperCase() + '|' + email;
            userTokens.put(random_uuid, user);
            return random_uuid;
          }
        }
        catch (Exception e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
          return "";
        }
      }
    }
    catch (Exception e) {
      e.printStackTrace();
    }
    
    return "";
  }

  @Path("/validate")
  @POST
  @Produces(MediaType.TEXT_PLAIN)
  public Boolean validate(@FormParam("token") String token) {
    if (userTokens.containsKey(token)) {
      return true;
    }

    return false;
  }

  @GET
  @Produces(MediaType.TEXT_HTML)
  public String get() {
    return "These are not the droids you are looking for!";
  }

  public static User getUserByToken(String token) {
    return userTokens.get(token);
  }
  
  public static void removeUserByToken(String token) {
    if(userTokens.containsKey(token)) {
      userTokens.remove(token);
    }    
  }

}