/*

  * 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;

 /**

  * CommandHandler for the RNTO command. Handler logic:

  * <ol>

  * <li>If the user has not logged in, then reply with 530</li>

  * <li>If this command was not preceded by a valid RNFR command, then reply with 503</li>

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

  * <li>If the TO pathname parameter does not specify a valid filename, then reply with 553</li>

  * <li>If the TO pathname parameter specifies an existing directory, then reply with 553</li>

  * <li>If the current user does not have write access to the parent directory, then reply with 553</li>

  * <li>Otherwise, rename the file, remove the FROM path stored in the session by the RNFR command, and reply with 250</li>

  * </ol>

  * The supplied pathname may be absolute or relative to the current directory.

  *

  * @author Chris Mair

  * @version $Revision: 221 $ - $Date: 2009-02-08 21:48:12 -0500 (Sun, 08 Feb 2009) $

  */

 public class RntoCommandHandler extends AbstractFakeCommandHandler {

     protected void handle(Command command, Session session) {

         verifyLoggedIn(session);

         String toPath = getRealPath(session, command.getRequiredParameter(0));

         String fromPath = (String) getRequiredSessionAttribute(session, SessionKeys.RENAME_FROM);

         this.replyCodeForFileSystemException = ReplyCodes.WRITE_FILE_ERROR;

         verifyFileSystemCondition(!getFileSystem().isDirectory(toPath), toPath, "filesystem.isDirectory");

         // User must have write permission to the directory

         String parentPath = getFileSystem().getParent(toPath);

         verifyFileSystemCondition(notNullOrEmpty(parentPath), parentPath, "filesystem.doesNotExist");

         verifyFileSystemCondition(getFileSystem().exists(parentPath), parentPath, "filesystem.doesNotExist");

         verifyWritePermission(session, parentPath);

         getFileSystem().rename(fromPath, toPath);

         session.removeAttribute(SessionKeys.RENAME_FROM);

         sendReply(session, ReplyCodes.RNTO_OK, "rnto", list(fromPath, toPath));

     }

 }