// FTPupload.java by Rowland http://www.home.comcast.net/~rowland3/
// Upload a file via FTP, using the JDK.

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

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;
    }
}

public class FTPupload {
    protected FTPclientConn cconn;
    public final String localfile;
    public final String targetfile;

    public FTPupload(String _host, String _user, String _password,
		     String _localfile, String _targetfile) {
	cconn= new FTPclientConn(_host, _user, _password);
	localfile= _localfile;
	targetfile= _targetfile;
	doit();
    }
    public FTPupload(String _host, String _user, String _password, String _file) {
	cconn= new FTPclientConn(_host, _user, _password);
	localfile= _file;
	targetfile= _file;
	doit();
    }

    protected void doit() {
	try {
	    OutputStream os= cconn.openUploadStream(targetfile);
	    FileInputStream is=  new FileInputStream(localfile);
	    byte[] buf= new byte[16384];
	    int c;
	    while (true) {
		//System.out.print(".");
		c= is.read(buf);
		if (c<= 0)  break;
		//System.out.print("[");
		os.write(buf, 0, c);
		//System.out.print("]");
	    }
	    os.close();
	    is.close();
	    cconn.close(); // section 3.2.5 of RFC1738
	} catch (Exception E) {
	    System.err.println(E.getMessage());
	    E.printStackTrace();
	}
    }

    public static void main(String args[]) {
	// Usage: FTPupload host, user, password, file
	new FTPupload(args[0], args[1], args[2], args[3]);
    }

}