/*

  * Copyright 2008 the original author or authors.

  *

  * 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.mockftpserver.fake.command;

 import org.mockftpserver.core.command.Command;

 import org.mockftpserver.core.command.ReplyCodes;

 import org.mockftpserver.core.session.Session;

 import org.mockftpserver.core.session.SessionKeys;

 import org.mockftpserver.fake.UserAccount;

 /**

  * CommandHandler for the USER command. Handler logic:

  * <ol>

  * <li>If the required pathname parameter is missing, then reply with 501</li>

  * <li>If the user account configured for the named user is not valid, then reply with 530</li>

  * <li>If the named user does not need a password for login, then set the UserAccount and

  * current directory in the session, and reply with 230</li>

  * <li>Otherwise, set the username in the session and reply with 331</li>

  * </ol>

  *

  * @author Chris Mair

  * @version $Revision: 198 $ - $Date: 2008-12-10 21:47:32 -0500 (Wed, 10 Dec 2008) $

  */

 public class UserCommandHandler extends AbstractFakeCommandHandler {

     protected void handle(Command command, Session session) {

         String username = command.getRequiredParameter(0);

         UserAccount userAccount = getServerConfiguration().getUserAccount(username);

         if (userAccount != null) {

             if (!validateUserAccount(username, session)) {

                 return;

             }

             // If the UserAccount is configured to not require password for login

             if (!userAccount.isPasswordRequiredForLogin()) {

                 login(userAccount, session, ReplyCodes.USER_LOGGED_IN_OK, "user.loggedIn");

                 return;

             }

         }

         session.setAttribute(SessionKeys.USERNAME, username);

         sendReply(session, ReplyCodes.USER_NEED_PASSWORD_OK, "user.needPassword");

     }

 }