/*
* 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;
import java.io.IOException;
import org.apache.ftpserver.ftplet.FtpReply;
import org.apache.ftpserver.ftplet.FtpRequest;
import org.apache.ftpserver.interfaces.Command;
import org.apache.ftpserver.interfaces.CommandFactory;
import org.apache.ftpserver.interfaces.FtpIoSession;
import org.apache.ftpserver.interfaces.FtpServerContext;
import org.apache.ftpserver.interfaces.ServerFtpStatistics;
import org.apache.ftpserver.listener.Listener;
import org.apache.ftpserver.util.FtpReplyUtil;
import org.apache.mina.core.session.IdleStatus;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class DefaultFtpHandler implements FtpHandler {
private final Logger LOG = LoggerFactory.getLogger(DefaultFtpHandler.class);
private FtpServerContext context;
private Listener listener;
public void init(final FtpServerContext context, final Listener listener) {
this.context = context;
this.listener = listener;
}
public void sessionCreated(final FtpIoSession session) throws Exception {
session.setListener(listener);
}
public void sessionOpened(final FtpIoSession session) throws Exception {
context.getFtpletContainer().onConnect(session.getFtpletSession());
session.write(FtpReplyUtil.translate(session, null, context, FtpReply.REPLY_220_SERVICE_READY, null, null));
}
public void sessionClosed(final FtpIoSession session) throws Exception {
try {
context.getFtpletContainer().onDisconnect(session.getFtpletSession());
} catch(Exception e) {
// shallow the exception, we're closing down the session anyways
LOG.warn("Ftplet threw an exception on disconnect", e);
}
ServerFtpStatistics stats = ((ServerFtpStatistics)context.getFtpStatistics());
if(stats != null) {
stats.setLogout(session);
}
}
public void exceptionCaught(final FtpIoSession session, final Throwable cause ) throws Exception {
LOG.error("Exception caught, closing session", cause);
session.closeOnFlush().awaitUninterruptibly(10000);
}
public void messageReceived( final FtpIoSession session, final FtpRequest request ) throws Exception {
try {
String commandName = request.getCommand();
CommandFactory commandFactory = context.getCommandFactory();
Command command = commandFactory.getCommand(commandName);
if(command != null) {
synchronized (session) {
command.execute(session, context, request);
}
}
else {
session.write(FtpReplyUtil.translate(session, request, context, FtpReply.REPLY_502_COMMAND_NOT_IMPLEMENTED, "not.implemented", null));
}
}
catch(Exception ex) {
// send error reply
try {
session.write(FtpReplyUtil.translate(session, request, context, FtpReply.REPLY_550_REQUESTED_ACTION_NOT_TAKEN, null, null));
}
catch(Exception ex1) {
}
if (ex instanceof java.io.IOException) {
throw (IOException)ex;
}
else {
LOG.warn("RequestHandler.service()", ex);
}
}
}
public void sessionIdle( final FtpIoSession session, final IdleStatus status ) throws Exception {
LOG.info("Session idle, closing");
session.closeOnFlush().awaitUninterruptibly(10000);
}
public void messageSent(final FtpIoSession session, final FtpReply reply)
throws Exception {
// do nothing
}
}