/*
* Copyright (C) 2009 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.services.ftp.client;
import org.exoplatform.container.ExoContainer;
import org.exoplatform.container.ExoContainerContext;
import org.exoplatform.services.ftp.FtpConst;
import org.exoplatform.services.ftp.FtpContext;
import org.exoplatform.services.ftp.command.FtpCommand;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import java.net.Socket;
import java.net.SocketException;
/**
* Created by The eXo Platform SAS Author : Vitaly Guly <gavrik-vetal@ukr.net/mail.ru>
*
* @version $Id: $
*/
public class FtpClientCommandThread extends Thread
{
private static Log log = ExoLogger.getLogger(FtpConst.FTP_PREFIX + "FtpClientCommandThread");
protected FtpClientSession clientSession;
public FtpClientCommandThread(FtpClientSession clientSession)
{
this.clientSession = clientSession;
}
public void run()
{
ExoContainer container = clientSession.getFtpServer().getConfiguration().getPortalContainer();
if (container == null)
{
if (log.isDebugEnabled())
{
log.debug("No Portal Container found.");
}
container = ExoContainerContext.getTopContainer();
}
try
{
ExoContainerContext.setCurrentContainer(container);
while (true)
{
try
{
String command = readLine();
if (command == null)
{
break;
}
if (!"".equals(command))
{
String[] comms = command.split(" ");
FtpCommand curCommand = clientSession.getFtpServer().getCommand(comms[0].toUpperCase());
if (curCommand != null)
{
if (comms.length > 1)
{
for (int i = 2; i < comms.length; i++)
{
if ("".equals(comms[i]))
{
comms[1] += " "; //NOSONAR
}
else
{
comms[1] += " " + comms[i]; //NOSONAR
}
}
}
FtpContext ftpContext = new FtpContext(clientSession, comms);
curCommand.execute(ftpContext);
}
else
{
clientSession.reply(String.format(FtpConst.Replyes.REPLY_500, comms[0].toUpperCase()));
clientSession.setPrevCommand(null);
}
}
}
catch (SocketException exc)
{
break;
}
catch (Exception exc)
{
log.info("Unhandled exception. " + exc.getMessage(), exc);
break;
}
}
try
{
clientSession.logout();
}
catch (Exception exc)
{
log.info("Unhandled exception. " + exc.getMessage(), exc);
}
}
finally
{
ExoContainerContext.setCurrentContainer(null);
}
}
protected String readLine() throws Exception
{
int[] buffer = new int[4 * 1024];
int bufPos = 0;
byte prevByte = 0;
Socket clientSocket = clientSession.getClientSocket();
while (true)
{
int received = clientSocket.getInputStream().read();
if (received < 0)
{
return null;
}
clientSession.refreshTimeOut();
buffer[bufPos] = (byte)received;
bufPos++;
if (prevByte == '\r' && received == '\n')
{
byte[] commandLine = new byte[bufPos - 2];
for (int i = 0; i < bufPos - 2; i++)
{
commandLine[i] = (byte)buffer[i];
}
try
{
String encoding = clientSession.getFtpServer().getConfiguration().getClientSideEncoding();
String readyCommand = new String(commandLine, encoding);
if (log.isDebugEnabled())
{
log.debug("FTP_CMD:[" + readyCommand + "]");
}
return readyCommand;
}
catch (Exception exc)
{
log.info("Unahdled exception. " + exc.getMessage(), exc);
}
}
prevByte = (byte)received;
}
}
}