sock.c

开源的防火墙代码

/* Copyright (c) 2002-2005 Vladislav Goncharov.
*
* Redistribution and use in source forms, with and without modification,
* are permitted provided that this entire comment appears intact.
*
* Redistribution in binary form may occur without any restrictions.
*
* This software is provided ``AS IS'' without any warranties of any kind.
*/

// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil -*- (for GNU Emacs)
//
// $Id: sock.c,v 1.2 2002/12/03 12:14:28 dev Exp $

/*
* Some helpers from sockets
*/

#include <stdlib.h>
#include <string.h>
#include "sock.h"

u_long	ntohl (u_long netlong)
{
	u_long result = 0;
	((char *)&result)[0] = ((char *)&netlong)[3];
	((char *)&result)[1] = ((char *)&netlong)[2];
	((char *)&result)[2] = ((char *)&netlong)[1];
	((char *)&result)[3] = ((char *)&netlong)[0];
	return result;
}

u_short	ntohs (u_short netshort)
{
	u_short result = 0;
	((char *)&result)[0] = ((char *)&netshort)[1];
	((char *)&result)[1] = ((char *)&netshort)[0];
	return result;
}