Java tutorial
/******************************************************************************* * Copyright 2011 Pascal Metrics * * 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.opensafety.hishare.managers.implementation.http; import java.util.Date; import java.util.Calendar; import java.util.UUID; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.opensafety.hishare.dao.interfaces.UserDao; import org.opensafety.hishare.managers.interfaces.UserManager; import org.opensafety.hishare.model.User; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.ImportResource; @Configuration public class UserManagerImpl implements UserManager { @Autowired UserDao userDao; Log log = LogFactory.getLog(this.getClass()); //in hours private @Value("${managers.authenticationExpiration}") int authenticationExpiration; public UserManagerImpl() { } public User getByUsername(String username) { return userDao.getByName(username); } public void persistUser(User user) { userDao.addUser(user); } public int getAuthenticationExpiration() { return authenticationExpiration; } public void setAuthenticationExpiration(int authenticationExpiration) { this.authenticationExpiration = authenticationExpiration; } public String renewUserAuthentication(String username) { Calendar expirationDate = Calendar.getInstance(); expirationDate.add(Calendar.HOUR, authenticationExpiration); User authenticatee = userDao.getByName(username); authenticatee.setAuthenticationId(UUID.randomUUID().toString()); authenticatee.setAuthenticationExpiration(expirationDate.getTime()); userDao.updateUser(authenticatee); return authenticatee.getAuthenticationId(); } public void updateUser(User user) { userDao.updateUser(user); } public boolean userExists(String username) { return userDao.userExists(username); } public boolean verifyAuthentication(String username, String authenticationId) { User user = userDao.getByName(username); if (user == null) { return false; } Date expiration = user.getAuthenticationExpiration(); Date now = Calendar.getInstance().getTime(); return (user.getAuthenticationId().equals(authenticationId)) && now.before(expiration); } }