/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2005 INRIA

 * All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>

 */

#ifndef IPV4_ROUTE_H

#define IPV4_ROUTE_H

#include <list>

#include <vector>

#include <ostream>

#include "ipv4-address.h"

namespace ns3 {

/**

 * \brief A record of an IPv4 route

 */

class Ipv4Route {

public:

  /**

   * \brief This constructor does nothing

   */

  Ipv4Route ();

  /**

   * \brief Copy Constructor

   * \param route The route to copy

   */

  Ipv4Route (Ipv4Route const &route);

  bool IsHost (void) const;

  /**

   * \return The IPv4 address of the destination of this route

   */

  Ipv4Address GetDest (void) const;

  bool IsNetwork (void) const;

  Ipv4Address GetDestNetwork (void) const;

  Ipv4Mask GetDestNetworkMask (void) const;

  /**

   * \return True if this route is a default route; false otherwise

   */

  bool IsDefault (void) const;

  bool IsGateway (void) const;

  Ipv4Address GetGateway (void) const;

  uint32_t GetInterface (void) const;

  static Ipv4Route CreateHostRouteTo (Ipv4Address dest, 

				      Ipv4Address nextHop, 

				      uint32_t interface);

  static Ipv4Route CreateHostRouteTo (Ipv4Address dest, 

				      uint32_t interface);

  static Ipv4Route CreateNetworkRouteTo (Ipv4Address network, 

					 Ipv4Mask networkMask, 

					 Ipv4Address nextHop, 

					 uint32_t interface);

  static Ipv4Route CreateNetworkRouteTo (Ipv4Address network, 

					 Ipv4Mask networkMask, 

					 uint32_t interface);

  static Ipv4Route CreateDefaultRoute (Ipv4Address nextHop, 

				       uint32_t interface);

private:

  Ipv4Route (Ipv4Address network,

	     Ipv4Mask mask,

	     Ipv4Address gateway,

	     uint32_t interface);

  Ipv4Route (Ipv4Address dest,

	     Ipv4Mask mask,

	     uint32_t interface);

  Ipv4Route (Ipv4Address dest,

	     Ipv4Address gateway,

	     uint32_t interface);

  Ipv4Route (Ipv4Address dest,

	     uint32_t interface);

  Ipv4Address m_dest;

  Ipv4Mask m_destNetworkMask;

  Ipv4Address m_gateway;

  uint32_t m_interface;

};

std::ostream& operator<< (std::ostream& os, Ipv4Route const& route);

/**

 * \brief A record of an IPv4 multicast route

 */

class Ipv4MulticastRoute {

public:

  /**

   * \brief This constructor does nothing

   */

  Ipv4MulticastRoute ();

  /**

   * \brief Copy Constructor

   * \param route The route to copy

   */

  Ipv4MulticastRoute (Ipv4MulticastRoute const &route);

  /**

   * \return The IPv4 address of the source of this route

   */

  Ipv4Address GetOrigin (void) const;

  /**

   * \return The IPv4 address of the multicast group of this route

   */

  Ipv4Address GetGroup (void) const;

  /**

   * \return The IPv4 address of the input interface of this route

   */

  uint32_t GetInputInterface (void) const;

  /**

   * \return The number of output interfaces of this route

   */

  uint32_t GetNOutputInterfaces (void) const;

  /**

   * \return A specified output interface.

   */

  uint32_t GetOutputInterface (uint32_t n) const;

  /**

   * \return A vector of all of the output interfaces of this route.

   */

  std::vector<uint32_t> GetOutputInterfaces (void) const;

  static Ipv4MulticastRoute CreateMulticastRoute (Ipv4Address origin, 

    Ipv4Address group, uint32_t inputInterface,

    std::vector<uint32_t> outputInterfaces);

private:

  Ipv4MulticastRoute (Ipv4Address origin, Ipv4Address group, 

    uint32_t inputInterface, std::vector<uint32_t> outputInterfaces);

  Ipv4Address m_origin;

  Ipv4Address m_group;

  uint32_t m_inputInterface;

  std::vector<uint32_t> m_outputInterfaces;

};

std::ostream& operator<< (std::ostream& os, Ipv4MulticastRoute const& route);

}//namespace ns3

#endif /* IPV4_ROUTE_H */