/*
* 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.frameworks.ftpclient.commands;
import org.exoplatform.frameworks.ftpclient.FtpUtils;
import org.exoplatform.frameworks.ftpclient.client.FtpClientSession;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import java.io.IOException;
import java.io.OutputStream;
/**
* Created by The eXo Platform SAS .
*
* @author Vitaly Guly
* @version $Id: $
*/
public abstract class FtpCommandImpl implements FtpCommand
{
private static final Log LOG = ExoLogger.getLogger("exo.jcr.framework.command.FtpCommandImpl");
protected FtpClientSession clientSession;
// protected PrintStream outPrintStream;
protected int replyCode;
protected String descript = "";
public int run(FtpClientSession clientSession)
{
this.clientSession = clientSession;
// outPrintStream = new PrintStream(clientSession.getClientSocket().getOutputStream());
int status = execute();
return status;
}
public abstract int execute();
public void sendCommand(String command)
{
LOG.info(">>> " + command);
try
{
byte[] data = command.getBytes();
OutputStream outStream = clientSession.getClientSocket().getOutputStream();
outStream.write(data);
outStream.write("\r\n".getBytes());
}
catch (IOException exc)
{
LOG.info("Unhandled exception. " + exc.getMessage(), exc);
}
}
private boolean isReplyString(String replyString)
{
if (replyString.length() < 4)
{
return false;
}
if (replyString.charAt(0) >= '0' && replyString.charAt(0) <= '9' && replyString.charAt(1) >= '0'
&& replyString.charAt(1) <= '9' && replyString.charAt(2) >= '0' && replyString.charAt(2) <= '9'
&& replyString.charAt(3) == ' ')
{
return true;
}
return false;
}
public int getReply() throws Exception
{
LOG.info("try get reply..........");
StringBuilder reply = new StringBuilder();
String curReply = "";
while (true)
{
curReply = readLine();
if ("".equals(curReply))
{
reply.append("\r\n");
}
else
{
reply.append(curReply);
if (isReplyString(curReply))
{
break;
}
else
{
reply.append("\r\n");
}
}
}
descript = reply.toString();
replyCode = FtpUtils.getReplyCode(curReply);
LOG.info("<<< " + descript);
return replyCode;
}
public String getDescription()
{
return descript;
}
// public String readLine() throws Exception {
// BufferedReader br = new BufferedReader(new
// InputStreamReader(clientSession.getClientSocket().getInputStream()));
// return br.readLine();
// }
public String readLine() throws Exception
{
byte[] buffer = new byte[4 * 1024];
int bufPos = 0;
byte prevByte = 0;
while (true)
{
int received = clientSession.getClientSocket().getInputStream().read();
if (received < 0)
{
return null;
}
buffer[bufPos] = (byte)received;
bufPos++;
if (prevByte == '\r' && received == '\n')
{
StringBuilder resultLine = new StringBuilder();
for (int i = 0; i < bufPos - 2; i++)
{
resultLine.append((char)buffer[i]);
}
return resultLine.toString();
}
prevByte = (byte)received;
}
}
}