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      1 /*
      2  * Copyright 2007 the original author or authors.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package org.mockftpserver.stub.command;
     17 
     18 import org.mockftpserver.core.command.Command;
     19 import org.mockftpserver.core.command.CommandHandler;
     20 import org.mockftpserver.core.command.InvocationRecord;
     21 import org.mockftpserver.core.command.ReplyCodes;
     22 import org.mockftpserver.core.session.Session;
     23 
     24 import java.io.IOException;
     25 import java.net.InetAddress;
     26 
     27 /**
     28  * CommandHandler for the EPSV (Extended Address Passive Mode) command. Request the Session to switch
     29  * to passive data connection mode. Return a reply code of 229, along with response text of the form:
     30  * "<i>Entering Extended Passive Mode (|||PORT|)</i>", where <i>PORT</i> is the 16-bit TCP port
     31  * address of the data connection on the server to which the client must connect.
     32  * See RFC2428 for more information.
     33  * <p/>
     34  * Each invocation record stored by this CommandHandler contains no data elements.
     35  *
     36  * @author Chris Mair
     37  * @version $Revision$ - $Date$
     38  */
     39 public class EpsvCommandHandler extends AbstractStubCommandHandler implements CommandHandler {
     40 
     41     /**
     42      * Constructor. Initialize the replyCode.
     43      */
     44     public EpsvCommandHandler() {
     45         setReplyCode(ReplyCodes.EPSV_OK);
     46     }
     47 
     48     /**
     49      * @throws java.io.IOException
     50      * @see org.mockftpserver.core.command.CommandHandler#handleCommand(org.mockftpserver.core.command.Command, org.mockftpserver.core.session.Session)
     51      */
     52     public void handleCommand(Command command, Session session, InvocationRecord invocationRecord)
     53             throws IOException {
     54 
     55         int port = session.switchToPassiveMode();
     56         InetAddress server = session.getServerHost();
     57         LOG.debug("server=" + server + " port=" + port);
     58         sendReply(session, Integer.toString(port));
     59     }
     60 
     61 }