/*
* 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.ServerDataConnectionFactory;
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;
/**
* Data channel protection level.
*/
public
class PROT extends AbstractCommand {
/**
* Execute command.
*/
public void execute(final FtpIoSession session,
final FtpServerContext context,
final FtpRequest request) throws IOException, FtpException {
// reset state variables
session.resetState();
// check argument
String arg = request.getArgument();
if(arg == null) {
session.write(FtpReplyUtil.translate(session, request, context, FtpReply.REPLY_501_SYNTAX_ERROR_IN_PARAMETERS_OR_ARGUMENTS, "PROT", null));
return;
}
// check argument
arg = arg.toUpperCase();
ServerDataConnectionFactory dcon = session.getDataConnection();
if(arg.equals("C")) {
dcon.setSecure(false);
session.write(FtpReplyUtil.translate(session, request, context, FtpReply.REPLY_200_COMMAND_OKAY, "PROT", null));
}
else if(arg.equals("P")) {
if(session.getListener().getDataConnectionConfiguration().getSslConfiguration() == null) {
session.write(FtpReplyUtil.translate(session, request, context, 431, "PROT", null));
}
else {
dcon.setSecure(true);
session.write(FtpReplyUtil.translate(session, request, context, FtpReply.REPLY_200_COMMAND_OKAY, "PROT", null));
}
}
else {
session.write(FtpReplyUtil.translate(session, request, context, FtpReply.REPLY_504_COMMAND_NOT_IMPLEMENTED_FOR_THAT_PARAMETER, "PROT", null));
}
}
}