/*
* 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.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.apache.ftpserver.impl.ServerFtpStatistics;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* <strong>Internal class, do not use directly.</strong>
*
* <code>DELE <SP> <pathname> <CRLF></code><br>
*
* This command causes the file specified in the pathname to be deleted at the
* server site.
*
* @author <a href="http://mina.apache.org">Apache MINA Project</a>
*/
public class DELE extends AbstractCommand {
private final Logger LOG = LoggerFactory.getLogger(DELE.class);
/**
* Execute command.
*/
public void execute(final FtpIoSession session,
final FtpServerContext context, final FtpRequest request)
throws IOException, FtpException {
// reset state variables
session.resetState();
// argument check
String fileName = request.getArgument();
if (fileName == null) {
session.write(LocalizedFileActionFtpReply.translate(session, request, context,
FtpReply.REPLY_501_SYNTAX_ERROR_IN_PARAMETERS_OR_ARGUMENTS,
"DELE", null, null));
return;
}
// get file object
FtpFile file = null;
try {
file = session.getFileSystemView().getFile(fileName);
} catch (Exception ex) {
LOG.debug("Could not get file " + fileName, ex);
}
if (file == null) {
session.write(LocalizedFileActionFtpReply.translate(session, request, context,
FtpReply.REPLY_550_REQUESTED_ACTION_NOT_TAKEN,
"DELE.invalid", fileName, null));
return;
}
// check file
fileName = file.getAbsolutePath();
if (file.isDirectory()) {
session.write(LocalizedFileActionFtpReply.translate(session, request, context,
FtpReply.REPLY_550_REQUESTED_ACTION_NOT_TAKEN,
"DELE.invalid", fileName, file));
return;
}
if (!file.isRemovable()) {
session.write(LocalizedFileActionFtpReply.translate(session, request, context,
FtpReply.REPLY_450_REQUESTED_FILE_ACTION_NOT_TAKEN,
"DELE.permission", fileName, file));
return;
}
// now delete
if (file.delete()) {
session.write(LocalizedFileActionFtpReply.translate(session, request, context,
FtpReply.REPLY_250_REQUESTED_FILE_ACTION_OKAY, "DELE",
fileName, file));
// log message
String userName = session.getUser().getName();
LOG.info("File delete : " + userName + " - " + fileName);
// notify statistics object
ServerFtpStatistics ftpStat = (ServerFtpStatistics) context
.getFtpStatistics();
ftpStat.setDelete(session, file);
} else {
session.write(LocalizedFileActionFtpReply.translate(session, request, context,
FtpReply.REPLY_450_REQUESTED_FILE_ACTION_NOT_TAKEN, "DELE",
fileName, file));
}
}
}