¿Como puedo obtener el usuario logueado en Windows?

[sachablade]

Tengo lo que buscas. en su día me recorri todo google. lo debes meter en el jsp de entrada porque hace un par de llamadas a si mismo.

Código:

        String username="";
	String auth = request.getHeader("Authorization");
	if (auth == null)
	{
	  response.setStatus(response.SC_UNAUTHORIZED);
	  response.setHeader("WWW-Authenticate", "NTLM");
	  response.flushBuffer();
	  return;
	}
	if (auth.startsWith("NTLM "))
	{
	  
	  byte[] msg = new sun.misc.BASE64Decoder().decodeBuffer(auth.substring(5));
	  int off = 0, length, offset;
	  if (msg[8] == 1)
	  {
	    byte z = 0;
	    byte[] msg1 = {(byte)'N', (byte)'T', (byte)'L', (byte)'M', (byte)'S', (byte)'S', (byte)'P', 
	      z,(byte)2, z, z, z, z, z, z, z,(byte)40, z, z, z, 
	      (byte)1, (byte)130, z, z,z, (byte)2, (byte)2,
	      (byte)2, z, z, z, z, z, z, z, z, z, z, z, z};
	    response.setHeader("WWW-Authenticate", "NTLM " + new sun.misc.BASE64Encoder().encodeBuffer(msg1));
	    response.sendError(response.SC_UNAUTHORIZED);
	    return;
	  }
	  else if (msg[8] == 3)
	  {
		
	    off = 30;
	
	    length = msg[off+17]*256 + msg[off+16];
	    offset = msg[off+19]*256 + msg[off+18];
	    String remoteHost = new String(msg, offset, length);
	
	    length = msg[off+1]*256 + msg[off];
	    offset = msg[off+3]*256 + msg[off+2];
	    String domain = new String(msg, offset, length);
	
	    length = msg[off+9]*256 + msg[off+8];
	    offset = msg[off+11]*256 + msg[off+10];
	    username = new String(msg, offset, length);
	
	    System.out.println("Username:"+username);
	    System.out.println("RemoteHost:"+remoteHost);
	    System.out.println("Domain:"+domain);
	  }
}