Package org.apache.ftpserver.command

Source Code of org.apache.ftpserver.command.OPTS

/*
* 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 java.util.HashMap;

import org.apache.ftpserver.ftplet.FtpException;
import org.apache.ftpserver.ftplet.FtpReply;
import org.apache.ftpserver.ftplet.FtpRequest;
import org.apache.ftpserver.interfaces.Command;
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>OPTS&lt;SP&gt; <commandt> &lt;SP&gt; <option> &lt;CRLF&gt;</code><br>
*
* This command shall cause the server use optional features for the
* command specified.
*/
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(FtpReplyUtil.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)COMMAND_MAP.get( optsRequest );
        try {
            if(command != null) {
                command.execute(session, context, request);
            }
            else {
                session.resetState();
                session.write(FtpReplyUtil.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(FtpReplyUtil.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.OPTS_MLST());
        COMMAND_MAP.put("OPTS_UTF8", new org.apache.ftpserver.command.OPTS_UTF8());
    }
}
TOP

Related Classes of org.apache.ftpserver.command.OPTS

TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.