/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2010 Network Security Lab, University of Washington, Seattle.
 *
 * 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: Sidharth Nabar <snabar@uw.edu>, He Wu <mdzz@u.washington.edu>
 */

#include "ns3/core-module.h"
#include "ns3/common-module.h"
#include "ns3/node-module.h"
#include "ns3/helper-module.h"
#include "ns3/mobility-module.h"
#include "ns3/contrib-module.h"
#include "ns3/wifi-module.h"
#include "ns3/rng-stream.h"
#include "ns3/energy-model-module.h"
#include "ns3/jamming-module.h"

#include <iostream>
#include <fstream>
#include <vector>
#include <string>

NS_LOG_COMPONENT_DEFINE ("JammingModelSampleScript");

using namespace ns3;

void ReceivePacket (Ptr<Socket> socket)
{
  Address addr;
  socket->GetSockName (addr);
  InetSocketAddress iaddr = InetSocketAddress::ConvertFrom (addr);
  NS_LOG_UNCOND ("--\nReceived one packet! Socket: "<< iaddr.GetIpv4 ()
      << " port: " << iaddr.GetPort () << "\n--");
}

static void GenerateTraffic (Ptr<Socket> socket, uint32_t pktSize, Ptr<Node> n,
    uint32_t pktCount, Time pktInterval )
{
  if (pktCount > 0)  {
    socket->Send (Create<Packet> (pktSize));
    Simulator::Schedule (pktInterval, &GenerateTraffic,
                        socket, pktSize, n, pktCount-1, pktInterval);
  }
  else {
    socket->Close ();
  }
}

int main (int argc, char *argv[])
{
  // un-comment to see debug messages
  /*
  LogComponentEnable ("NslWifiPhy", LOG_LEVEL_DEBUG);
  LogComponentEnable ("EnergySource", LOG_LEVEL_DEBUG);
  LogComponentEnable ("BasicEnergySource", LOG_LEVEL_DEBUG);
  LogComponentEnable ("DeviceEnergyModel", LOG_LEVEL_DEBUG);
  LogComponentEnable ("BasicRadioEnergyModel", LOG_LEVEL_DEBUG);
  LogComponentEnable ("WirelessModuleUtility", LOG_LEVEL_DEBUG);
  LogComponentEnable ("JammerHelper", LOG_LEVEL_DEBUG);
  LogComponentEnable ("Jammer", LOG_LEVEL_DEBUG);
  LogComponentEnable ("ReactiveJammer", LOG_LEVEL_DEBUG);
  LogComponentEnable ("JammingMitigationHelper", LOG_LEVEL_DEBUG);
  LogComponentEnable ("JammingMitigation", LOG_LEVEL_DEBUG);
  LogComponentEnable ("MitigateByChannelHop", LOG_LEVEL_DEBUG);
  */

  std::string phyMode ("wifib-1mbs");
  double Prss = -80;  // -dBm
  double Jrss = -80;  // -dBm for jammer: same as honest nodes
  uint32_t PpacketSize = 200; // bytes
  bool verbose = false;

  // these are not command line arguments for this version
  uint32_t numPackets = 20;   // number of packets to send
  double interval = 1;        // seconds
  double startTime = 0.0;     // seconds
  double distanceToRx = 10.0; // meters

  double offset = 81; // This is a magic number used to set the
                      // transmit power, based on other configuration
  CommandLine cmd;

  cmd.AddValue ("phyMode", "Wifi Phy mode", phyMode);
  cmd.AddValue ("Prss", "Intended primary received signal strength (dBm)", Prss);
  cmd.AddValue ("PpacketSize", "size of application packet sent", PpacketSize);
  cmd.AddValue ("verbose", "turn on all WifiNetDevice log components", verbose);

  cmd.Parse (argc, argv);
  // Convert to time object
  Time interPacketInterval = Seconds (interval);

  // disable fragmentation for frames below 2200 bytes
  Config::SetDefault ("ns3::WifiRemoteStationManager::FragmentationThreshold",
  StringValue ("2200"));
  // turn off RTS/CTS for frames below 2200 bytes
  Config::SetDefault ("ns3::WifiRemoteStationManager::RtsCtsThreshold",
                      StringValue ("2200"));
  // Fix non-unicast data rate to be the same as that of unicast
  Config::SetDefault ("ns3::WifiRemoteStationManager::NonUnicastMode",
                      StringValue (phyMode));

  NodeContainer c;  //
  c.Create (5);     // create 4 nodes + 1 jammer
  NodeContainer networkNodes;
  networkNodes.Add (c.Get (0));
  networkNodes.Add (c.Get (1));
  networkNodes.Add (c.Get (2));
  networkNodes.Add (c.Get (3));

  // The below set of helpers will help us to put together the wifi NICs we want
  WifiHelper wifi;
  if (verbose)
    {
     wifi.EnableLogComponents ();  // Turn on all Wifi logging
    }
  wifi.SetStandard (WIFI_PHY_STANDARD_80211b);

  /** Wifi PHY **/
  /***************************************************************************/
  // honest node PHY layer
  NslWifiPhyHelper wifiPhy =  NslWifiPhyHelper::Default ();
  // This is one parameter that matters when using FixedRssLossModel
  // set it to zero; otherwise, gain will be added
  wifiPhy.Set ("NslRxGain", DoubleValue (-10) );
  wifiPhy.Set ("NslTxGain", DoubleValue (offset + Prss) );
  wifiPhy.Set ("NslCcaMode1Threshold", DoubleValue (0.0) );
  /***************************************************************************/

  /** wifi channel **/
  YansWifiChannelHelper wifiChannel ;
  wifiChannel.SetPropagationDelay ("ns3::ConstantSpeedPropagationDelayModel");
  wifiChannel.AddPropagationLoss ("ns3::FriisPropagationLossModel");
  // create wifi channel
  Ptr<YansWifiChannel> wifiChannelPtr = wifiChannel.Create ();
  wifiPhy.SetChannel (wifiChannelPtr);

  /** MAC layer **/
  // Add a non-QoS upper MAC, and disable rate control
  NqosWifiMacHelper wifiMac = NqosWifiMacHelper::Default ();
  wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager",
                               "DataMode",StringValue(phyMode),
                               "ControlMode",StringValue(phyMode));
  // Set it to ad-hoc mode
  wifiMac.SetType ("ns3::AdhocWifiMac");

  /** install receivers **/
  NetDeviceContainer devices = wifi.Install (wifiPhy, wifiMac, networkNodes);

  /** mobility **/
  MobilityHelper mobility;
  Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();
  positionAlloc->Add (Vector (0.0, 0.0, 0.0));
  positionAlloc->Add (Vector (distanceToRx, 0.1*distanceToRx, 0.0));
  positionAlloc->Add (Vector (2*distanceToRx, 0.0, 0.0));
  positionAlloc->Add (Vector (3*distanceToRx, 0.1*distanceToRx, 0.0));
  positionAlloc->Add (Vector (2*distanceToRx, -0.5*distanceToRx, 0.0)); // jammer location
  mobility.SetPositionAllocator (positionAlloc);
  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
  mobility.Install (c);

  /** Energy Model **/
  /***************************************************************************/
  /* energy source */
  BasicEnergySourceHelper basicSourceHelper;
  // configure energy source
  basicSourceHelper.Set ("BasicEnergySourceInitialEnergyJ", DoubleValue (0.1));
  /* device energy model */
  RadioEnergyHelper radioEnergyHelper;
  // configure radio energy model
  radioEnergyHelper.Set ("TxPowerW", DoubleValue (0.0435));
  /* energy model helper */
  EnergyModelHelper energyHelper;
  // install on all nodes
  energyHelper.Install (basicSourceHelper, radioEnergyHelper, c);
  /***************************************************************************/

  /** utility **/
  /***************************************************************************/
  WirelessModuleUtilityHelper utilityHelper;
  // set inclusion/exclusion list for all nodes
  std::vector<std::string> AllInclusionList;
  AllInclusionList.push_back("ns3::UdpHeader");
  std::vector<std::string> AllExclusionList;
  AllExclusionList.push_back("ns3::olsr::PacketHeader");
  // assign lists to helper
  utilityHelper.SetInclusionList (AllInclusionList);
  utilityHelper.SetExclusionList (AllExclusionList);
  // install on all nodes
  utilityHelper.Install (c);
  /***************************************************************************/

  /** jammer **/
  // install MAC & PHY onto jammer
  NetDeviceContainer devices2 = wifi.Install (wifiPhy, wifiMac, c.Get (4));
  /***************************************************************************/
  JammerHelper jammerHelper;
  // configure jammer type
  jammerHelper.SetJammerType ("ns3::ReactiveJammer");
  // set jammer parameters
  jammerHelper.Set ("ReactiveJammerRxTimeout", TimeValue (Seconds (2.0)));
  // install jammer
  jammerHelper.Install (c.Get (4));
  // Get pointer to JammerYansWifiPhy
  Ptr<Jammer> jammerPtr = c.Get (4)->GetObject<Jammer> ();
  /***************************************************************************/

  /** mitigation **/
  /***************************************************************************/
  JammingMitigationHelper mitigationHelper;
  // configure mitigation type
  mitigationHelper.SetJammingMitigationType ("ns3::MitigateByChannelHop");
  // configure mitigation parameters
  mitigationHelper.Set("MitigateByChannelHopChannelHopDelay", TimeValue (Seconds (0.0)));
  // install mitigation on honest nodes
  mitigationHelper.Install (c.Get (0));
  mitigationHelper.Install (c.Get (1));
  mitigationHelper.Install (c.Get (2));
  mitigationHelper.Install (c.Get (3));
  // get ptr to mitigation for node 3
  Ptr<MitigateByChannelHop> mitigationPtr = c.Get(3)->GetObject<MitigateByChannelHop> ();
  /***************************************************************************/

  /** Internet stack **/
  InternetStackHelper internet;
  internet.Install (networkNodes);

  Ipv4AddressHelper ipv4;
  NS_LOG_INFO ("Assign IP Addresses.");
  ipv4.SetBase ("10.1.1.0", "255.255.255.0");
  Ipv4InterfaceContainer i = ipv4.Assign (devices);

  TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
  Ptr<Socket> recvSink = Socket::CreateSocket (networkNodes.Get (3), tid);   // node 3
  InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), 80);
  recvSink->Bind (local);
  recvSink->SetRecvCallback (MakeCallback (&ReceivePacket));

  Ptr<Socket> source = Socket::CreateSocket (networkNodes.Get (0), tid);     // node 0
  InetSocketAddress remote = InetSocketAddress (Ipv4Address ("255.255.255.255"), 80);
  source->Connect (remote);

  NS_LOG_UNCOND ("Primary packet RSS=" << Prss << " dBm and jammer RSS=" << Jrss
      << " dBm ");

  /** simulation setup **/
  // start traffic
  Simulator::Schedule (Seconds (startTime), &GenerateTraffic, source,
      PpacketSize, networkNodes.Get (0), numPackets, interPacketInterval);

  // start jammer
  Simulator::Schedule (Seconds (startTime + 7.0), &ns3::Jammer::StartJammer,
      jammerPtr);

  Simulator::Stop (Seconds (20.0));
  Simulator::Run ();
  Simulator::Destroy ();

  return 0;
}