162 lines
4.0 KiB
C++
162 lines
4.0 KiB
C++
/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2005 INRIA
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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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#include "ns3/assert.h"
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#include "ns3/address-utils.h"
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#include "arp-header.h"
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namespace ns3 {
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NS_OBJECT_ENSURE_REGISTERED (ArpHeader);
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void
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ArpHeader::SetRequest (Address sourceHardwareAddress,
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Ipv4Address sourceProtocolAddress,
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Address destinationHardwareAddress,
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Ipv4Address destinationProtocolAddress)
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{
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m_type = ARP_TYPE_REQUEST;
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m_macSource = sourceHardwareAddress;
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m_macDest = destinationHardwareAddress;
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m_ipv4Source = sourceProtocolAddress;
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m_ipv4Dest = destinationProtocolAddress;
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}
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void
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ArpHeader::SetReply (Address sourceHardwareAddress,
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Ipv4Address sourceProtocolAddress,
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Address destinationHardwareAddress,
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Ipv4Address destinationProtocolAddress)
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{
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m_type = ARP_TYPE_REPLY;
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m_macSource = sourceHardwareAddress;
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m_macDest = destinationHardwareAddress;
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m_ipv4Source = sourceProtocolAddress;
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m_ipv4Dest = destinationProtocolAddress;
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}
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bool
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ArpHeader::IsRequest (void) const
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{
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return (m_type == ARP_TYPE_REQUEST)?true:false;
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}
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bool
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ArpHeader::IsReply (void) const
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{
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return (m_type == ARP_TYPE_REPLY)?true:false;
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}
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Address
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ArpHeader::GetSourceHardwareAddress (void)
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{
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return m_macSource;
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}
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Address
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ArpHeader::GetDestinationHardwareAddress (void)
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{
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return m_macDest;
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}
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Ipv4Address
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ArpHeader::GetSourceIpv4Address (void)
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{
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return m_ipv4Source;
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}
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Ipv4Address
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ArpHeader::GetDestinationIpv4Address (void)
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{
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return m_ipv4Dest;
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}
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TypeId
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ArpHeader::GetTypeId (void)
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{
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static TypeId tid = TypeId ("ns3::ArpHeader")
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.SetParent<Header> ()
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.AddConstructor<ArpHeader> ()
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;
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return tid;
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}
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TypeId
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ArpHeader::GetInstanceTypeId (void) const
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{
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return GetTypeId ();
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}
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void
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ArpHeader::Print (std::ostream &os) const
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{
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if (IsRequest ())
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{
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os << "request "
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<< "source mac: " << m_macSource << " "
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<< "source ipv4: " << m_ipv4Source << " "
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<< "dest ipv4: " << m_ipv4Dest
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;
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}
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else
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{
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NS_ASSERT (IsReply ());
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os << "reply "
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<< "source mac: " << m_macSource << " "
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<< "source ipv4: " << m_ipv4Source << " "
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<< "dest mac: " << m_macDest << " "
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<< "dest ipv4: " <<m_ipv4Dest
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;
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}
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}
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uint32_t
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ArpHeader::GetSerializedSize (void) const
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{
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/* this is the size of an ARP payload. */
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return 28;
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}
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void
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ArpHeader::Serialize (Buffer::Iterator start) const
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{
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Buffer::Iterator i = start;
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NS_ASSERT (m_macSource.GetLength () == m_macDest.GetLength ());
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/* ethernet */
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i.WriteHtonU16 (0x0001);
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/* ipv4 */
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i.WriteHtonU16 (0x0800);
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i.WriteU8 (m_macSource.GetLength ());
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i.WriteU8 (4);
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i.WriteHtonU16 (m_type);
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WriteTo (i, m_macSource);
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WriteTo (i, m_ipv4Source);
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WriteTo (i, m_macDest);
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WriteTo (i, m_ipv4Dest);
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}
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uint32_t
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ArpHeader::Deserialize (Buffer::Iterator start)
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{
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Buffer::Iterator i = start;
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i.Next (2+2);
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uint32_t hardwareAddressLen = i.ReadU8 ();
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i.Next (1);
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m_type = i.ReadNtohU16 ();
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ReadFrom (i, m_macSource, hardwareAddressLen);
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ReadFrom (i, m_ipv4Source);
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ReadFrom (i, m_macDest, hardwareAddressLen);
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ReadFrom (i, m_ipv4Dest);
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return GetSerializedSize ();
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}
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}; // namespace ns3
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