rnfr.java

来自「JAVA FTP 上传下载 的源文件」· Java 代码 · 共 98 行

/*
 * 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.LocalizedFtpReply;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * <strong>Internal class, do not use directly.</strong>
 * 
 * <code>RNFR &lt;SP&gt; &lt;pathname&gt; &lt;CRLF&gt;</code><br>
 * 
 * This command specifies the old pathname of the file which is to be renamed.
 * This command must be immediately followed by a "rename to" command specifying
 * the new file pathname.
 *
 * @author The Apache MINA Project ([e-mail])
 * @version $Rev: 711534 $, $Date: 2008-11-05 09:48:47 +0100 (Wed, 05 Nov 2008) $
 */
public class RNFR extends AbstractCommand {

    private final Logger LOG = LoggerFactory.getLogger(RNFR.class);

    /**
     * Execute command
     */
    public void execute(final FtpIoSession session,
            final FtpServerContext context, final FtpRequest request)
            throws IOException, FtpException {

        // reset state variable
        session.resetState();

        // argument check
        String fileName = request.getArgument();
        if (fileName == null) {
            session.write(LocalizedFtpReply.translate(session, request, context,
                    FtpReply.REPLY_501_SYNTAX_ERROR_IN_PARAMETERS_OR_ARGUMENTS,
                    "RNFR", null));
            return;
        }

        // get filename
        FtpFile renFr = null;
        try {
            renFr = session.getFileSystemView().getFile(fileName);
        } catch (Exception ex) {
            LOG.debug("Exception getting file object", ex);
        }

        // check file
        if (renFr == null) {
            session.write(LocalizedFtpReply.translate(session, request, context,
                    FtpReply.REPLY_550_REQUESTED_ACTION_NOT_TAKEN, "RNFR",
                    fileName));
        } else {
            session.setRenameFrom(renFr);
            fileName = renFr.getAbsolutePath();
            session
                    .write(LocalizedFtpReply
                            .translate(
                                    session,
                                    request,
                                    context,
                                    FtpReply.REPLY_350_REQUESTED_FILE_ACTION_PENDING_FURTHER_INFORMATION,
                                    "RNFR", fileName));
        }
    }

}