/*
* 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 java.text.ParseException;
import java.util.Date;
import org.apache.ftpserver.command.AbstractCommand;
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.LocalizedFtpReply;
import org.apache.ftpserver.util.DateUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Command for changing the modified time of a file.
* <p>
* Specified in the following document:
* http://www.omz13.com/downloads/draft-somers-ftp-mfxx-00.html#anchor8
* </p>
* @author <a href="http://mina.apache.org">Apache MINA Project</a>
*/
public class MFMT extends AbstractCommand {
private final Logger LOG = LoggerFactory.getLogger(MFMT.class);
/**
* Execute command.
*/
public void execute(final FtpIoSession session,
final FtpServerContext context, final FtpRequest request)
throws IOException {
// reset state variables
session.resetState();
String argument = request.getArgument();
if (argument == null || argument.trim().length() == 0) {
session
.write(LocalizedFtpReply
.translate(
session,
request,
context,
FtpReply.REPLY_501_SYNTAX_ERROR_IN_PARAMETERS_OR_ARGUMENTS,
"MFMT.invalid", null));
return;
}
String[] arguments = argument.split(" ",2);
if(arguments.length != 2) {
session
.write(LocalizedFtpReply
.translate(
session,
request,
context,
FtpReply.REPLY_501_SYNTAX_ERROR_IN_PARAMETERS_OR_ARGUMENTS,
"MFMT.invalid", null));
return;
}
String timestamp = arguments[0].trim();
try {
Date time = DateUtils.parseFTPDate(timestamp);
String fileName = arguments[1].trim();
// get file object
FtpFile file = null;
try {
file = session.getFileSystemView().getFile(fileName);
} catch (Exception ex) {
LOG.debug("Exception getting the file object: " + fileName, ex);
}
if (file == null || !file.doesExist()) {
session
.write(LocalizedFtpReply
.translate(
session,
request,
context,
FtpReply.REPLY_550_REQUESTED_ACTION_NOT_TAKEN,
"MFMT.filemissing", fileName));
return;
}
// check file
if (!file.isFile()) {
session
.write(LocalizedFtpReply
.translate(
session,
request,
context,
FtpReply.REPLY_501_SYNTAX_ERROR_IN_PARAMETERS_OR_ARGUMENTS,
"MFMT.invalid", null));
return;
}
// check if we can set date and retrieve the actual date stored for the file.
if (!file.setLastModified(time.getTime())) {
// we couldn't set the date, possibly the file was locked
session.write(LocalizedFtpReply.translate(session, request, context,
FtpReply.REPLY_450_REQUESTED_FILE_ACTION_NOT_TAKEN, "MFMT",
fileName));
return;
}
// all checks okay, lets go
session
.write(LocalizedFtpReply
.translate(
session,
request,
context,
FtpReply.REPLY_213_FILE_STATUS,
"MFMT", "ModifyTime=" + timestamp + "; " + fileName));
return;
} catch (ParseException e) {
session
.write(LocalizedFtpReply
.translate(
session,
request,
context,
FtpReply.REPLY_501_SYNTAX_ERROR_IN_PARAMETERS_OR_ARGUMENTS,
"MFMT.invalid", null));
return;
}
}
}