/*
* 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;
import java.io.IOException;
import org.apache.ftpserver.ftplet.FileSystemView;
import org.apache.ftpserver.ftplet.FtpException;
import org.apache.ftpserver.ftplet.FtpReply;
import org.apache.ftpserver.ftplet.FtpRequest;
import org.apache.ftpserver.interfaces.FtpIoSession;
import org.apache.ftpserver.interfaces.FtpServerContext;
import org.apache.ftpserver.util.FtpReplyUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* <code>CWD <SP> <pathname> <CRLF></code><br>
*
* This command allows the user to work with a different
* directory for file storage or retrieval without
* altering his login or accounting information. Transfer
* parameters are similarly unchanged. The argument is a
* pathname specifying a directory.
*/
public
class CWD extends AbstractCommand {
private final Logger LOG = LoggerFactory.getLogger(CWD.class);
/**
* Execute command
*/
public void execute(final FtpIoSession session,
final FtpServerContext context,
final FtpRequest request) throws IOException, FtpException {
// reset state variables
session.resetState();
// get new directory name
String dirName = "/";
if (request.hasArgument()) {
dirName = request.getArgument();
}
// change directory
FileSystemView fsview = session.getFileSystemView();
boolean success = false;
try {
success = fsview.changeDirectory(dirName);
}
catch(Exception ex) {
LOG.debug("Failed to change directory in file system", ex);
}
if(success) {
dirName = fsview.getCurrentDirectory().getFullName();
session.write(FtpReplyUtil.translate(session, request, context, FtpReply.REPLY_250_REQUESTED_FILE_ACTION_OKAY, "CWD", dirName));
}
else {
session.write(FtpReplyUtil.translate(session, request, context, FtpReply.REPLY_550_REQUESTED_ACTION_NOT_TAKEN, "CWD", null));
}
}
}