/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2007-2009 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: David Gross <gdavid.devel@gmail.com>
 */

#include "ns3/log.h"
#include "ns3/assert.h"
#include "ns3/uinteger.h"
#include "ipv6-option.h"
#include "ipv6-option-header.h"

NS_LOG_COMPONENT_DEFINE ("Ipv6Option");

namespace ns3
{

NS_OBJECT_ENSURE_REGISTERED (Ipv6Option);

TypeId Ipv6Option::GetTypeId ()
{
  static TypeId tid = TypeId ("ns3::Ipv6Option")
    .SetParent<Object> ()
    .AddAttribute ("OptionNumber", "The IPv6 option number.",
                   UintegerValue (0),
                   MakeUintegerAccessor (&Ipv6Option::GetOptionNumber),
                   MakeUintegerChecker<uint8_t> ())
    ;
  return tid;
}

Ipv6Option::~Ipv6Option ()
{
  NS_LOG_FUNCTION_NOARGS ();
}

void Ipv6Option::SetNode (Ptr<Node> node)
{
  NS_LOG_FUNCTION (this << node);
  m_node = node;
}


NS_OBJECT_ENSURE_REGISTERED (Ipv6OptionPad1);

TypeId Ipv6OptionPad1::GetTypeId ()
{
  static TypeId tid = TypeId ("ns3::Ipv6OptionPad1")
    .SetParent<Ipv6Option> ()
    .AddConstructor<Ipv6OptionPad1> ()
    ;
  return tid;
}

Ipv6OptionPad1::Ipv6OptionPad1 ()
{
  NS_LOG_FUNCTION_NOARGS ();
}

Ipv6OptionPad1::~Ipv6OptionPad1 ()
{
  NS_LOG_FUNCTION_NOARGS ();
}

uint8_t Ipv6OptionPad1::GetOptionNumber () const
{
  NS_LOG_FUNCTION_NOARGS ();

  return OPT_NUMBER;
}

uint8_t Ipv6OptionPad1::Process (Ptr<Packet> packet, uint8_t offset, Ipv6Header const& ipv6Header, bool& isDropped)
{
  NS_LOG_FUNCTION (this << packet << offset << ipv6Header << isDropped);

  Ptr<Packet> p = packet->Copy ();
  p->RemoveAtStart (offset);

  Ipv6OptionPad1Header pad1Header;
  p->RemoveHeader (pad1Header);

  isDropped = false;

  return pad1Header.GetSerializedSize ();
}


NS_OBJECT_ENSURE_REGISTERED (Ipv6OptionPadn);

TypeId Ipv6OptionPadn::GetTypeId ()
{
  static TypeId tid = TypeId ("ns3::Ipv6OptionPadn")
    .SetParent<Ipv6Option> ()
    .AddConstructor<Ipv6OptionPadn> ()
    ;
  return tid;
}

Ipv6OptionPadn::Ipv6OptionPadn ()
{
  NS_LOG_FUNCTION_NOARGS ();
}

Ipv6OptionPadn::~Ipv6OptionPadn ()
{
  NS_LOG_FUNCTION_NOARGS ();
}

uint8_t Ipv6OptionPadn::GetOptionNumber () const
{
  NS_LOG_FUNCTION_NOARGS ();

  return OPT_NUMBER;
}

uint8_t Ipv6OptionPadn::Process (Ptr<Packet> packet, uint8_t offset, Ipv6Header const& ipv6Header, bool& isDropped)
{
  NS_LOG_FUNCTION (this << packet << offset << ipv6Header << isDropped);

  Ptr<Packet> p = packet->Copy ();
  p->RemoveAtStart (offset);

  Ipv6OptionPadnHeader padnHeader;
  p->RemoveHeader (padnHeader);

  isDropped = false;

  return padnHeader.GetSerializedSize ();
}


NS_OBJECT_ENSURE_REGISTERED (Ipv6OptionJumbogram);

TypeId Ipv6OptionJumbogram::GetTypeId ()
{
  static TypeId tid = TypeId ("ns3::Ipv6OptionJumbogram")
    .SetParent<Ipv6Option> ()
    .AddConstructor<Ipv6OptionJumbogram> ()
    ;
  return tid;
}

Ipv6OptionJumbogram::Ipv6OptionJumbogram ()
{
  NS_LOG_FUNCTION_NOARGS ();
}

Ipv6OptionJumbogram::~Ipv6OptionJumbogram ()
{
  NS_LOG_FUNCTION_NOARGS ();
}

uint8_t Ipv6OptionJumbogram::GetOptionNumber () const
{
  NS_LOG_FUNCTION_NOARGS ();

  return OPT_NUMBER;
}

uint8_t Ipv6OptionJumbogram::Process (Ptr<Packet> packet, uint8_t offset, Ipv6Header const& ipv6Header, bool& isDropped)
{
  NS_LOG_FUNCTION (this << packet << offset << ipv6Header << isDropped);

  Ptr<Packet> p = packet->Copy ();
  p->RemoveAtStart (offset);

  Ipv6OptionJumbogramHeader jumbogramHeader;
  p->RemoveHeader (jumbogramHeader);

  isDropped = false;

  return jumbogramHeader.GetSerializedSize ();
}


NS_OBJECT_ENSURE_REGISTERED (Ipv6OptionRouterAlert);

TypeId Ipv6OptionRouterAlert::GetTypeId ()
{
  static TypeId tid = TypeId ("ns3::Ipv6OptionRouterAlert")
    .SetParent<Ipv6Option> ()
    .AddConstructor<Ipv6OptionRouterAlert> ()
    ;
  return tid;
}

Ipv6OptionRouterAlert::Ipv6OptionRouterAlert ()
{
  NS_LOG_FUNCTION_NOARGS ();
}

Ipv6OptionRouterAlert::~Ipv6OptionRouterAlert ()
{
  NS_LOG_FUNCTION_NOARGS ();
}

uint8_t Ipv6OptionRouterAlert::GetOptionNumber () const
{
  NS_LOG_FUNCTION_NOARGS ();

  return OPT_NUMBER;
}

uint8_t Ipv6OptionRouterAlert::Process (Ptr<Packet> packet, uint8_t offset, Ipv6Header const& ipv6Header, bool& isDropped)
{
  NS_LOG_FUNCTION (this << packet << offset << ipv6Header << isDropped);

  Ptr<Packet> p = packet->Copy ();
  p->RemoveAtStart (offset);

  Ipv6OptionRouterAlertHeader routerAlertHeader;
  p->RemoveHeader (routerAlertHeader);

  isDropped = false;

  return routerAlertHeader.GetSerializedSize ();
}

} /* namespace ns3 */

