package org.hwo.dnsconf;

import java.net.InetAddress;
import java.net.UnknownHostException;

public class DNSConf {

	
	public static String getConfigValue(String application,String name){
		
		try {
			String hostname = InetAddress.getLocalHost().getHostName();
			
			System.err.println("Hostname:" + hostname);
			
			InetAddress a = lookupConfigRoot(hostname);
			if (a != null){
				
			}
			
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		return "";
	}
	
	public static InetAddress lookupConfigRoot(String dns){
		int idx = dns.indexOf(".");
		if (idx == -1)
			return null;
		
		String lookup = dns.substring(idx+1);
		System.err.println("DNSConf: Try: " + lookup);
		
		InetAddress a;
		try {
			a = InetAddress.getByName("_dnsconf." + lookup);
		} catch (UnknownHostException e) {
			return lookupConfigRoot(lookup);
			
		}
		if (a == null)
			return lookupConfigRoot(lookup);
		
		return a;
	};
	
	
	
}