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

/*

 * Copyright (c) 2008-2009 Telecom Bretagne 

 *

 * 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: Mehdi Benamor <benamor.mehdi@ensi.rnu.tn>

 */

#include "ns3/log.h"

#include "ns3/node.h"

#include "ipv6-l3-protocol.h"

#include "ipv6-autoconfigured-prefix.h"

namespace ns3

{

NS_LOG_COMPONENT_DEFINE ("Ipv6AutoconfiguredPrefix");

uint32_t Ipv6AutoconfiguredPrefix::m_prefixId = 0;

Ipv6AutoconfiguredPrefix::Ipv6AutoconfiguredPrefix (Ptr<Node> node, uint32_t interface, Ipv6Address prefix, Ipv6Prefix mask, uint32_t preferredLifeTime, uint32_t validLifeTime, Ipv6Address router)

{

  m_node = node;

  m_interface = interface;

  m_validLifeTime = validLifeTime;

  m_preferredLifeTime = preferredLifeTime;

  m_id = m_prefixId;

  m_prefixId++;

  m_preferred = false;

  m_valid = false;

  m_prefix = prefix;

  m_mask = mask;

  m_defaultGatewayRouter = router;

}

Ipv6AutoconfiguredPrefix::~Ipv6AutoconfiguredPrefix ()

{

}

void Ipv6AutoconfiguredPrefix::SetDefaultGatewayRouter (Ipv6Address router)

{

  m_defaultGatewayRouter = router;

}

Ipv6Address Ipv6AutoconfiguredPrefix::GetDefaultGatewayRouter () const

{

  return m_defaultGatewayRouter;

}

void Ipv6AutoconfiguredPrefix::SetInterface (uint32_t interface)

{

  m_interface = interface;

}

uint32_t Ipv6AutoconfiguredPrefix::GetInterface () const

{

  return m_interface;

}

void Ipv6AutoconfiguredPrefix::SetPreferredLifeTime (uint32_t t)

{

  m_preferredLifeTime = t;

}

uint32_t Ipv6AutoconfiguredPrefix::GetPreferredLifeTime () const

{

  return m_preferredLifeTime;

}

void Ipv6AutoconfiguredPrefix::SetValidLifeTime (uint32_t t)

{

  m_validLifeTime = t;

}

uint32_t Ipv6AutoconfiguredPrefix::GetValidLifeTime () const

{

  return m_validLifeTime;

}

void Ipv6AutoconfiguredPrefix::MarkPreferredTime ()

{

  m_preferred = true;

}

void Ipv6AutoconfiguredPrefix::MarkValidTime ()

{

  m_preferred = false;

  m_valid = true;

}

void Ipv6AutoconfiguredPrefix::FunctionPreferredTimeout ()

{

  NS_LOG_INFO ("Preferred Time expired for " << m_prefix);

  m_preferred = false;

  MarkValidTime ();

  StartValidTimer ();

}

void Ipv6AutoconfiguredPrefix::FunctionValidTimeout ()

{

  NS_LOG_INFO ("Valid Time expired for " << m_prefix);

  m_valid = false;

  RemoveMe ();

}

void Ipv6AutoconfiguredPrefix::StartPreferredTimer ()

{

  if (m_preferredLifeTime != 0xffffffff)

    {

      NS_LOG_INFO ("Start PreferredTimer for " << m_prefix);

      m_preferredTimer.SetFunction (&Ipv6AutoconfiguredPrefix::FunctionPreferredTimeout, this);

      m_preferredTimer.SetDelay (Seconds (m_preferredLifeTime));

      m_preferredTimer.Schedule ();

    }

}

void Ipv6AutoconfiguredPrefix::StartValidTimer ()

{

  if (m_validLifeTime != 0xffffffff)

    {

      NS_LOG_INFO ("Start ValidTimer for " << m_prefix);

      m_validTimer.SetFunction (&Ipv6AutoconfiguredPrefix::FunctionValidTimeout, this);

      m_validTimer.SetDelay (Seconds (m_validLifeTime - m_preferredLifeTime));

      m_validTimer.Schedule ();

    }

}

void Ipv6AutoconfiguredPrefix::StopPreferredTimer ()

{

  if (m_preferredTimer.IsRunning())

    {

      NS_LOG_INFO ("Stop PreferredTimer for " << m_prefix);

      m_preferredTimer.Cancel ();

    }

}

void Ipv6AutoconfiguredPrefix::StopValidTimer ()

{

  if (m_validTimer.IsRunning())

    {

      NS_LOG_INFO ("Stop ValidTimer for " << m_prefix);

      m_validTimer.Cancel ();

    }

}

void Ipv6AutoconfiguredPrefix::RemoveMe ()

{

  NS_LOG_INFO ("The prefix " << m_prefix << " will be removed on interface " << m_interface);

  Ptr<Ipv6L3Protocol> ipv6 = m_node->GetObject<Ipv6L3Protocol> ();

  ipv6->RemoveAutoconfiguredAddress (m_interface, m_prefix, m_mask, m_defaultGatewayRouter);

}

void Ipv6AutoconfiguredPrefix::SetPreferred ()

{

  m_preferred = true;

}

void Ipv6AutoconfiguredPrefix::SetValid ()

{

  m_preferred = false;

  m_valid = true;

}

uint32_t Ipv6AutoconfiguredPrefix::GetId () const

{ 

  return m_id;

}

bool Ipv6AutoconfiguredPrefix::IsPreferred () const

{

  return m_preferred;

}

bool Ipv6AutoconfiguredPrefix::IsValid () const

{

  return m_valid;

}

Ipv6Address Ipv6AutoconfiguredPrefix::GetPrefix () const

{

  return m_prefix;

}

void Ipv6AutoconfiguredPrefix::SetPrefix (Ipv6Address prefix)

{

  m_prefix = prefix;

}

Ipv6Prefix Ipv6AutoconfiguredPrefix::GetMask () const

{

  return m_mask;

}

void Ipv6AutoconfiguredPrefix::SetMask (Ipv6Prefix mask)

{

  m_mask = mask;

}

} /* namespace ns3 */