genode/repos/os/include/net/netaddress.h

/*
 * \brief  Generic network address definitions
 * \author Stefan Kalkowski
 * \date   2010-08-20
 */

/*
 * Copyright (C) 2010-2013 Genode Labs GmbH
 *
 * This file is part of the Genode OS framework, which is distributed
 * under the terms of the GNU General Public License version 2.
 */

#ifndef _NET__NETADDRESS_H_
#define _NET__NETADDRESS_H_

/* Genode */
#include <base/stdint.h>
#include <util/string.h>

namespace Net { template <unsigned> class Network_address; }


/**
 * Generic form of a network address.
 */
template <unsigned LEN>
class Net::Network_address
{
	public:

		Genode::uint8_t addr[LEN];


		/******************
		 ** Constructors **
		 ******************/

		Network_address(Genode::uint8_t value = 0) {
			Genode::memset(&addr, value, LEN); }

		Network_address(void *src) {
			Genode::memcpy(&addr, src, LEN); }


		/*********************
		 ** Helper methods  **
		 *********************/

		void copy(void *dst) { Genode::memcpy(dst, addr, LEN); }


		/***************
		 ** Operators **
		 ***************/

		bool operator==(const Network_address &other) const {

			/*
			 * We compare from lowest address segment to highest
			 * one, because in a local context, the higher segments
			 * of two addresses normally don't distinguish.
			 * (e.g. in an IPv4 local subnet)
			 */
			for (int i = LEN-1; i >= 0; --i) {
				if (addr[i] != other.addr[i])
					return false;
			}
			return true;
		}
};

#endif /* _NET__NETADDRESS_H_ */