/*
* 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.util.HashMap;
import org.apache.ftpserver.command.AbstractCommand;
import org.apache.ftpserver.command.Command;
import org.apache.ftpserver.ftplet.FtpException;
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.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* <strong>Internal class, do not use directly.</strong>
*
* <code>OPTS<SP> <command> <SP> <option> <CRLF></code><br>
*
* This command shall cause the server use optional features for the command
* specified.
*
* @author <a href="http://mina.apache.org">Apache MINA Project</a>
*/
public class OPTS extends AbstractCommand {
private final Logger LOG = LoggerFactory.getLogger(OPTS.class);
private static final HashMap<String, Command> COMMAND_MAP = new HashMap<String, Command>(
16);
/**
* Execute command.
*/
public void execute(final FtpIoSession session,
final FtpServerContext context, final FtpRequest request)
throws IOException, FtpException {
// reset state
session.resetState();
// no params
String argument = request.getArgument();
if (argument == null) {
session.write(LocalizedFtpReply.translate(session, request, context,
FtpReply.REPLY_501_SYNTAX_ERROR_IN_PARAMETERS_OR_ARGUMENTS,
"OPTS", null));
return;
}
// get request name
int spaceIndex = argument.indexOf(' ');
if (spaceIndex != -1) {
argument = argument.substring(0, spaceIndex);
}
argument = argument.toUpperCase();
// call appropriate command method
String optsRequest = "OPTS_" + argument;
Command command = COMMAND_MAP.get(optsRequest);
try {
if (command != null) {
command.execute(session, context, request);
} else {
session.resetState();
session.write(LocalizedFtpReply.translate(session, request, context,
FtpReply.REPLY_502_COMMAND_NOT_IMPLEMENTED,
"OPTS.not.implemented", argument));
}
} catch (Exception ex) {
LOG.warn("OPTS.execute()", ex);
session.resetState();
session.write(LocalizedFtpReply.translate(session, request, context,
FtpReply.REPLY_500_SYNTAX_ERROR_COMMAND_UNRECOGNIZED,
"OPTS", null));
}
}
// initialize all the OPTS command handlers
static {
COMMAND_MAP.put("OPTS_MLST",
new org.apache.ftpserver.command.impl.OPTS_MLST());
COMMAND_MAP.put("OPTS_UTF8",
new org.apache.ftpserver.command.impl.OPTS_UTF8());
}
}