| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.ftpserver.command.impl; |
| |
| import java.io.IOException; |
| |
| import org.apache.ftpserver.command.AbstractCommand; |
| import org.apache.ftpserver.ftplet.FileSystemView; |
| import org.apache.ftpserver.ftplet.FtpException; |
| import org.apache.ftpserver.ftplet.FtpFile; |
| import org.apache.ftpserver.ftplet.FtpReply; |
| import org.apache.ftpserver.ftplet.FtpRequest; |
| import org.apache.ftpserver.impl.FtpIoSession; |
| import org.apache.ftpserver.impl.FtpServerContext; |
| import org.apache.ftpserver.impl.LocalizedFileActionFtpReply; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * <strong>Internal class, do not use directly.</strong> |
| * |
| * <code>CDUP <CRLF></code><br> |
| * |
| * This command is a special case of CWD, and is included to simplify the |
| * implementation of programs for transferring directory trees between operating |
| * systems having different syntaxes for naming the parent directory. The reply |
| * codes shall be identical to the reply codes of CWD. |
| * |
| * @author <a href="http://mina.apache.org">Apache MINA Project</a> |
| */ |
| public class CDUP extends AbstractCommand { |
| |
| private final Logger LOG = LoggerFactory.getLogger(CDUP.class); |
| |
| /** |
| * Execute command. |
| */ |
| public void execute(final FtpIoSession session, |
| final FtpServerContext context, final FtpRequest request) |
| throws IOException, FtpException { |
| |
| // reset state variables |
| session.resetState(); |
| |
| // change directory |
| FileSystemView fsview = session.getFileSystemView(); |
| boolean success = false; |
| try { |
| success = fsview.changeWorkingDirectory(".."); |
| } catch (Exception ex) { |
| LOG.debug("Failed to change directory in file system", ex); |
| } |
| FtpFile cwd = fsview.getWorkingDirectory(); |
| if (success) { |
| String dirName = cwd.getAbsolutePath(); |
| session.write(LocalizedFileActionFtpReply.translate(session, request, context, |
| FtpReply.REPLY_250_REQUESTED_FILE_ACTION_OKAY, "CDUP", |
| dirName, cwd)); |
| } else { |
| session.write(LocalizedFileActionFtpReply |
| .translate(session, request, context, |
| FtpReply.REPLY_550_REQUESTED_ACTION_NOT_TAKEN, |
| "CDUP", null, cwd)); |
| } |
| } |
| } |