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

/*

 * Copyright (c) 2007 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>

 */

#include "ascii-trace.h"

#include "ns3/trace-context.h"

#include "ns3/trace-root.h"

#include "ns3/simulator.h"

#include "node.h"

#include "ipv4.h"

#include "queue.h"

#include "llc-snap-header.h"

#include "arp-header.h"

#include "udp-header.h"

#include "ipv4-header.h"

#include "node-list.h"

namespace ns3 {

AsciiTrace::AsciiTrace (std::string filename)

{

  m_os.open (filename.c_str ());

}

AsciiTrace::~AsciiTrace ()

{

  m_os.close ();

}

void

AsciiTrace::TraceAllQueues (void)

{

  TraceRoot::Connect ("/nodes/*/ipv4/interfaces/*/netdevice/queue/*",

                      MakeCallback (&AsciiTrace::LogDevQueue, this));

}

void

AsciiTrace::TraceAllNetDeviceRx (void)

{

  TraceRoot::Connect ("/nodes/*/ipv4/interfaces/*/netdevice/rx",

                      MakeCallback (&AsciiTrace::LogDevRx, this));

}

void

AsciiTrace::PrintType (Packet const &packet)

{

  Packet p = packet;

  LlcSnapHeader llc;

  p.Peek (llc);

  p.Remove (llc);

  switch (llc.GetType ())

    {

    case 0x0800: {

      Ipv4Header ipv4;

      p.Peek (ipv4);

      p.Remove (ipv4);

      if (ipv4.GetProtocol () == 17)

        {

          UdpHeader udp;

          p.Peek (udp);

          p.Remove (udp);

          m_os << "udp size=" << p.GetSize ();

        }

    } break;

    case 0x0806: {

      ArpHeader arp;

      p.Peek (arp);

      p.Remove (arp);

      m_os << "arp ";

      if (arp.IsRequest ())

        {

          m_os << "request";

        }

      else

        {

          m_os << "reply ";

        }

    } break;

    }

} 

void 

AsciiTrace::LogDevQueue (TraceContext const &context, Packet const &packet)

{

  enum Queue::TraceType type;

  context.Get (type);

  switch (type) 

    {

    case Queue::ENQUEUE:

      m_os << "+ ";

      break;

    case Queue::DEQUEUE:

      m_os << "- ";

      break;

    case Queue::DROP:

      m_os << "d ";

      break;

    }

  m_os << Simulator::Now ().GetSeconds () << " ";

  NodeList::NodeIndex nodeIndex;

  context.Get (nodeIndex);

  m_os << "node=" << NodeList::GetNode (nodeIndex)->GetId () << " ";

  Ipv4::InterfaceIndex interfaceIndex;

  context.Get (interfaceIndex);

  m_os << "interface=" << interfaceIndex << " ";

  m_os << "pkt-uid=" << packet.GetUid () << " ";

  PrintType (packet);

  m_os << std::endl;

}

void 

AsciiTrace::LogDevRx (TraceContext const &context, Packet &p)

{

  m_os << "r " << Simulator::Now ().GetSeconds () << " ";

  NodeList::NodeIndex nodeIndex;

  context.Get (nodeIndex);

  m_os << "node=" << NodeList::GetNode (nodeIndex)->GetId () << " ";

  Ipv4::InterfaceIndex interfaceIndex;

  context.Get (interfaceIndex);

  m_os << "interface=" << interfaceIndex << " ";

  m_os << "pkt-uid=" << p.GetUid () << " ";

  PrintType (p);

  m_os << std::endl;  

}

}//namespace ns3