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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2009 Strasbourg University
 *
 * 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: Sebastien Vincent <vincent@clarinet.u-strasbg.fr>
 */

#ifndef RADVD_PREFIX_H
#define RADVD_PREFIX_H 

#include <stdint.h>

#include "ns3/ipv6-address.h"
#include "ns3/simple-ref-count.h"

namespace ns3
{

/**
 * \ingroup radvd
 * \brief Router prefix for radvd application.
 */
class RadvdPrefix : public SimpleRefCount<RadvdPrefix>
{
public:
  /**
   * \brief Constructor.
   * \param network network prefix advertised
   * \param prefixLength prefix length ( 0 < x <= 128)
   * \param preferredLifeTime preferred life time in seconds (default 7 days)
   * \param validLifeTime valid life time in seconds (default 30 days)
   * \param onLinkFlag on link flag
   * \param autonomousFlag autonomous link flag
   * \param routerAddrFlag router address flag (for Mobile IPv6)
   */
  RadvdPrefix (Ipv6Address network, uint8_t prefixLength, uint32_t preferredLifeTime = 604800, uint32_t validLifeTime = 2592000, bool onLinkFlag = true, bool autonomousFlag = true, bool routerAddrFlag = false);

  /**
   * \brief Destructor.
   */
  ~RadvdPrefix ();

  /**
   * \brief Get network prefix.
   * \return network prefix
   */
  Ipv6Address GetNetwork () const;

  /**
   * \brief Set network prefix.
   * \param network network prefix
   */
  void SetNetwork (Ipv6Address network);

  /**
   * \brief Get prefix length.
   * \return prefix length
   */
  uint8_t GetPrefixLength () const;

  /**
   * \brief Set prefix length.
   * \param prefixLength prefix length
   */
  void SetPrefixLength (uint8_t prefixLength);

  /**
   * \brief Get preferred lifetime.
   * \return lifetime
   */
  uint32_t GetPreferredLifeTime () const;

  /**
   * \brief Set preferred lifetime.
   * \param preferredLifeTime lifetime
   */
  void SetPreferredLifeTime (uint32_t preferredLifeTime);

  /**
   * \brief Get valid lifetime.
   * \return lifetime
   */
  uint32_t GetValidLifeTime () const;

  /**
   * \brief Set valid lifetime.
   * \param validLifeTime lifetime
   */
  void SetValidLifeTime (uint32_t validLifeTime);

  /**
   * \brief Is on-link flag ?
   * \return true if on-link is activated, false otherwise
   */
  bool IsOnLinkFlag () const;

  /**
   * \brief Set on-link flag.
   * \param onLinkFlag value
   */
  void SetOnLinkFlag (bool onLinkFlag);

  /**
   * \brief Is autonomous flag ?
   * \return true if autonomous is activated, false otherwise
   */
  bool IsAutonomousFlag () const;

  /**
   * \brief Set autonomous flag.
   * \param autonomousFlag value
   */
  void SetAutonomousFlag (bool autonomousFlag);

  /**
   * \brief Is router address flag ?
   * \return true if router address is activated, false otherwise
   */
  bool IsRouterAddrFlag () const;

  /**
   * \brief Set router address flag.
   * \param routerAddrFlag value
   */
  void SetRouterAddrFlag (bool routerAddrFlag);

private:
  /**
   * \brief Network prefix.
   */
  Ipv6Address m_network;

  /**
   * \brief Prefix length.
   */
  uint8_t m_prefixLength;

  /**
   * \brief Preferred time.
   */
  uint32_t m_preferredLifeTime;

  /**
   * \brief Valid time.
   */
  uint32_t m_validLifeTime;

  /**
   * \brief On link flag, indicates that this prefix can be used for on-link determination.
   */
  bool m_onLinkFlag;

  /**
   * \brief Autonomous flag, it is used for autonomous address configuration (\RFC{2462}).
   */
  bool m_autonomousFlag;

  /**
   * \brief Router address flag, indicates that router address is sent instead 
   * of network prefix as is required by Mobile IPv6.
   */
  bool m_routerAddrFlag;
};

} /* namespace ns3 */

#endif /* RADVD_PREFIX_H */