package tgactool;

import java.io.*;
import java.net.*;

public class FTPclientConn {

    public final String host;
    public final String user;
    protected final String password;
    protected URLConnection urlc;

    public FTPclientConn(String _host, String _user, String _password) {
        host= _host;  user= _user;  password= _password;
        urlc = null;
    }
    protected URL makeURL(String targetfile) throws MalformedURLException  {
    if (user== null)
      return new URL("ftp://"+ host+ "/"+ targetfile+ ";type=i");
    else
      return new URL("ftp://"+ user+ ":"+ password+ "@"+ host+ "/"+ targetfile+ ";type=i");
    }

    protected InputStream openDownloadStream(String targetfile) throws Exception {
        URL url= makeURL(targetfile);
        urlc = url.openConnection();
        InputStream is = urlc.getInputStream();
        return is;
    }

    protected OutputStream openUploadStream(String targetfile) throws Exception {
        URL url= makeURL(targetfile);
        urlc = url.openConnection();
        OutputStream os = urlc.getOutputStream();
        return os;
    }

    protected void close() {
        urlc= null;
    }

}