/*
 * BayonneMon
 *
 * A simple application to monitor Bayonne status
 *
 * (C) 2002 Jason Spence, <thalakan@ostel.com>
 * 
 * Released under the GPL
 */

import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;

class BayonneMon {
    static String[] hosts = new String[1024];
    static int hosts_len = 0;
    static GridLayout hostLayout = new GridLayout(2, 2);

    static public void main(String args[]) throws Exception {
	DatagramSocket socket = new DatagramSocket(7000);

	for(int i = 0; i < 1024; ++i) {
	    hosts[i] = "";
	}
	
	System.out.println("UDP SERVER LISTENING");

	Frame f = new Frame("Bayonne status monitor");
	f.setSize(300,300);
	f.setLayout(hostLayout);
	f.addWindowListener(new WindowAdapter() {
		public void windowClosing(WindowEvent e) {
		    System.exit(0);
		}
	    });
	f.show();
	while(true) {
	    byte[] in = new byte[1536];		
	    byte[] name = new byte[16];
	    byte[] stats = new byte[255];
	    char[] status = new char[1];

	    DatagramPacket packet = new DatagramPacket(in, in.length);
	    
	    socket.receive(packet);
	    
	    InetAddress address = packet.getAddress();
	    int port = packet.getPort();

	    for(int i = 0; i < 16; ++i) {
		if(in[i + 4] < 0x20 || name[i + 4] > 0x7e) {
		    break;
		}
		name[i] = in[i + 4];
	    }

	    for(int i = 0; i < 255; ++i) {
		stats[i] = in[i + 27];
	    }
	    
	    String s = new String(in, 0, packet.getLength(), "ISO-8859-1");
	    String n = new String(name, 0, 16, "ISO-8859-1");
	    String st = new String(stats, 0, 255, "ISO-8859-1");
	    String st2 = new String();
	    for(int i = 0; i < st.length(); ++i) {
		if(st.charAt(i) < 0x20 || st.charAt(i) > 0x7e) {
		    break;
		}
		st2 = st2 + st.charAt(i);
	    }
	    
	    System.out.println("UDPReceive FROM CLIENT " + n + ": " + st);

	    if(seenHost(n)) {
		f.repaint();
	    }
	    else {
		Container c = new Container();

		addHost(n);
		f.add(new Label(n));
		f.add(c);

		c.setLayout(new GridLayout(st2.length(), 2));
		for(int i = 0; i < st2.length(); ++i) {
		    c.add(new Label("Port " + i));
		    
		    status[0] = st2.charAt(i);
		    c.add(new Label(new String(status)));
		}
		f.pack();
		f.repaint();
	    }
	}
    }

    static boolean seenHost(String host) {
	for(int i = 0; i < hosts_len; ++i) {
	    if(hosts[i].equals(host)) {
		return true;
	    }
	}
	return false;
    }

    static void addHost(String host) {
	hosts[hosts_len] = host;
	hosts_len++;
	hostLayout.setRows(hosts_len);
    }
}