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

//

// Copyright (c) 2006 Georgia Tech Research Corporation

// 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: George F. Riley<riley@ece.gatech.edu>

//

// Define the layer 4 demultiplexer object for ns3.

// George F. Riley, Georgia Tech, Fall 2006

#include <sstream>

#include "ns3/composite-trace-resolver.h"

#include "ns3/node.h"

#include "ipv4-l4-demux.h"

#include "ipv4-l4-protocol.h"

namespace ns3 {

const InterfaceId Ipv4L4Demux::iid = MakeInterfaceId ("Ipv4L4Demux", Object::iid);

Ipv4L4ProtocolTraceContextElement::Ipv4L4ProtocolTraceContextElement ()

  : m_protocolNumber (0)

{}

Ipv4L4ProtocolTraceContextElement::Ipv4L4ProtocolTraceContextElement (int protocolNumber)

  : m_protocolNumber (protocolNumber)

{}

int 

Ipv4L4ProtocolTraceContextElement::Get (void) const

{

  return m_protocolNumber;

}

void 

Ipv4L4ProtocolTraceContextElement::Print (std::ostream &os) const

{

  os << "ipv4-protocol=0x" << std::hex << m_protocolNumber << std::dec;

}

uint16_t 

Ipv4L4ProtocolTraceContextElement::GetUid (void)

{

  static uint16_t uid = AllocateUid<Ipv4L4ProtocolTraceContextElement> ("Ipv4L4ProtocolTraceContextElement");

  return uid;

}

std::string 

Ipv4L4ProtocolTraceContextElement::GetTypeName (void) const

{

  return "ns3::Ipv4L4ProtocolTraceContextElement";

}

Ipv4L4Demux::Ipv4L4Demux (Ptr<Node> node)

  : m_node (node)

{

  SetInterfaceId (Ipv4L4Demux::iid);

}

Ipv4L4Demux::~Ipv4L4Demux()

{}

void

Ipv4L4Demux::DoDispose (void)

{

  for (L4List_t::iterator i = m_protocols.begin(); i != m_protocols.end(); ++i)

    {

      (*i)->Dispose ();

      *i = 0;

    }

  m_protocols.clear ();

  m_node = 0;

  Object::DoDispose ();

}

Ptr<TraceResolver>

Ipv4L4Demux::GetTraceResolver (void) const

{

  Ptr<CompositeTraceResolver> resolver = Create<CompositeTraceResolver> ();

  for (L4List_t::const_iterator i = m_protocols.begin(); i != m_protocols.end(); ++i)

    {

      Ptr<Ipv4L4Protocol> protocol = *i;

      std::ostringstream oss;

      oss << (unsigned int) (*i)->GetProtocolNumber ();

      Ipv4L4ProtocolTraceContextElement protocolNumber = (*i)->GetProtocolNumber ();

      resolver->AddComposite (oss.str (), protocol, protocolNumber);

    }

  resolver->SetParentResolver (Object::GetTraceResolver ());

  return resolver;

}

void

Ipv4L4Demux::Insert(Ptr<Ipv4L4Protocol> protocol)

{

  m_protocols.push_back (protocol);

}

Ptr<Ipv4L4Protocol>

Ipv4L4Demux::GetProtocol(int protocolNumber)

{

  for (L4List_t::iterator i = m_protocols.begin(); i != m_protocols.end(); ++i)

    {

      if ((*i)->GetProtocolNumber () == protocolNumber)

	{

	  return *i;

	}

    }

  return 0;

}

void

Ipv4L4Demux::Remove (Ptr<Ipv4L4Protocol> protocol)

{

  m_protocols.remove (protocol);

}

}//namespace ns3