UserDetailsDaoImpl.java

/*******************************************************************************
 * Copyright 2012 Christian Ternes and Thorsten Volland
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package org.businessmanager.dao.security;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.businessmanager.domain.security.Group;
import org.businessmanager.domain.security.User;
import org.businessmanager.domain.security.UserDetailsImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.jdbc.JdbcDaoImpl;

public class UserDetailsDaoImpl extends JdbcDaoImpl {
 
	@Autowired
	private UserDao userDao;
	
	@Autowired
	private GroupDao groupDao;
	
	@Override
	public UserDetails loadUserByUsername(String username) {
		UserDetails userDetails	= super.loadUserByUsername(username);
		String password = userDetails.getPassword();
		boolean enabled = userDetails.isEnabled();
		boolean accountNonExpired = userDetails.isAccountNonExpired();
		boolean credentialsNonExpired = userDetails.isCredentialsNonExpired();
		boolean accountNonLocked = userDetails.isAccountNonLocked();
		Collection<GrantedAuthority> authorities = userDetails.getAuthorities();
		
		UserDetailsImpl userDetailsImpl = new UserDetailsImpl(userDetails.getUsername(), password, enabled, accountNonExpired, credentialsNonExpired, accountNonLocked, authorities);
		User user = getUserByName(username);
		List<String> grantedGroups = retrieveGroupsForUser(user);
		userDetailsImpl.setGrantedGroups(grantedGroups);
		userDetailsImpl.setSalt(user.getSalt());
		
		return userDetailsImpl;
	}
	
	private List<String> retrieveGroupsForUser(User user) {
		List<String> groupList = new ArrayList<String>();
		List<Group> groups = groupDao.findGroupsForUser(user.getId());
		for (Group group : groups) {
			groupList.add(group.getName());
		}
		return groupList;
	}

	private User getUserByName(String username) {
		User user = userDao.findUserByName(username);
		return user;
	}
}