123 lines
2.4 KiB
C++
123 lines
2.4 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2005,2006 INRIA
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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*/
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/*
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* Documentation kindly pointed out by Tom Henderson:
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* http://wiki.ethereal.com/Development/LibpcapFileFormat
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*/
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#include "ns3/simulator.h"
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#include "ns3/system-file.h"
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#include "pcap-writer.h"
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#include "packet.h"
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namespace ns3 {
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enum {
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PCAP_ETHERNET = 1,
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PCAP_RAW_IP = 101,
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PCAP_80211 = 105,
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};
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PcapWriter::PcapWriter ()
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{
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m_writer = 0;
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}
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PcapWriter::~PcapWriter ()
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{
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delete m_writer;
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}
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void
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PcapWriter::Open (std::string const &name)
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{
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m_writer = new SystemFile ();
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m_writer->Open (name.c_str ());
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}
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void
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PcapWriter::WriteEthernetHeader (void)
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{
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WriteHeader (PCAP_ETHERNET);
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}
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void
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PcapWriter::WriteIpHeader (void)
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{
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WriteHeader (PCAP_RAW_IP);
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}
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void
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PcapWriter::WriteWifiHeader (void)
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{
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WriteHeader (PCAP_80211);
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}
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void
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PcapWriter::WriteHeader (uint32_t network)
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{
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Write32 (0xa1b2c3d4);
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Write16 (2);
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Write16 (4);
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Write32 (0);
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Write32 (0);
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Write32 (0xffff);
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Write32 (network);
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}
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void
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PcapWriter::WritePacket (Packet const packet)
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{
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if (m_writer != 0)
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{
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uint64_t current = Simulator::Now ().GetMicroSeconds ();
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uint64_t s = current / 1000000;
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uint64_t us = current % 1000000;
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Write32 (s & 0xffffffff);
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Write32 (us & 0xffffffff);
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Write32 (packet.GetSize ());
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Write32 (packet.GetSize ());
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m_writer->Write (packet.PeekData (), packet.GetSize ());
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}
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}
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void
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PcapWriter::WriteData (uint8_t *buffer, uint32_t size)
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{
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m_writer->Write (buffer, size);
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}
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void
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PcapWriter::Write32 (uint32_t data)
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{
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m_writer->Write ((uint8_t*)&data, 4);
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}
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void
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PcapWriter::Write16 (uint16_t data)
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{
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m_writer->Write ((uint8_t*)&data, 2);
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}
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}; // namespace ns3
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