341 lines
6.5 KiB
C++
341 lines
6.5 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/log.h"
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#include "ipv4-address.h"
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#include "ns3/assert.h"
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NS_LOG_COMPONENT_DEFINE("Ipv4Address");
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namespace ns3 {
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#define ASCII_DOT (0x2e)
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#define ASCII_ZERO (0x30)
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static uint32_t
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AsciiToIpv4Host (char const *address)
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{
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uint32_t host = 0;
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while (true) {
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uint8_t byte = 0;
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while (*address != ASCII_DOT &&
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*address != 0) {
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byte *= 10;
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byte += *address - ASCII_ZERO;
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address++;
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}
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host <<= 8;
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host |= byte;
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if (*address == 0) {
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break;
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}
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address++;
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}
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return host;
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}
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}//namespace ns3
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namespace ns3 {
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Ipv4Mask::Ipv4Mask ()
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: m_mask (0x66666666)
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{}
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Ipv4Mask::Ipv4Mask (uint32_t mask)
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: m_mask (mask)
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{}
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Ipv4Mask::Ipv4Mask (char const *mask)
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{
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m_mask = AsciiToIpv4Host (mask);
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}
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bool
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Ipv4Mask::IsEqual (Ipv4Mask other) const
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{
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if (other.m_mask == m_mask) {
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return true;
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} else {
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return false;
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}
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}
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bool
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Ipv4Mask::IsMatch (Ipv4Address a, Ipv4Address b) const
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{
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if ((a.Get () & m_mask) == (b.Get () & m_mask)) {
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return true;
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} else {
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return false;
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}
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}
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uint32_t
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Ipv4Mask::Get (void) const
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{
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return m_mask;
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}
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void
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Ipv4Mask::Set (uint32_t mask)
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{
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m_mask = mask;
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}
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uint32_t
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Ipv4Mask::GetInverse (void) const
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{
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return ~m_mask;
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}
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void
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Ipv4Mask::Print (std::ostream &os) const
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{
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os << ((m_mask >> 24) & 0xff) << "."
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<< ((m_mask >> 16) & 0xff) << "."
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<< ((m_mask >> 8) & 0xff) << "."
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<< ((m_mask >> 0) & 0xff);
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}
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Ipv4Mask
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Ipv4Mask::GetLoopback (void)
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{
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static Ipv4Mask loopback = Ipv4Mask ("255.0.0.0");
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return loopback;
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}
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Ipv4Mask
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Ipv4Mask::GetZero (void)
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{
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static Ipv4Mask zero = Ipv4Mask ("0.0.0.0");
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return zero;
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}
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Ipv4Mask
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Ipv4Mask::GetOnes (void)
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{
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static Ipv4Mask ones = Ipv4Mask ("255.255.255.255");
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return ones;
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}
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Ipv4Address::Ipv4Address ()
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: m_address (0x66666666)
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{}
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Ipv4Address::Ipv4Address (uint32_t address)
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{
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m_address = address;
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}
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Ipv4Address::Ipv4Address (char const *address)
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{
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m_address = AsciiToIpv4Host (address);
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}
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uint32_t
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Ipv4Address::Get (void) const
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{
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return m_address;
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}
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void
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Ipv4Address::Set (uint32_t address)
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{
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m_address = address;
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}
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void
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Ipv4Address::Set (char const *address)
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{
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m_address = AsciiToIpv4Host (address);
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}
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Ipv4Address
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Ipv4Address::CombineMask (Ipv4Mask const &mask) const
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{
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return Ipv4Address (Get () & mask.Get ());
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}
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Ipv4Address
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Ipv4Address::GetSubnetDirectedBroadcast (Ipv4Mask const &mask) const
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{
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if (mask == Ipv4Mask::GetOnes ())
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{
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NS_ASSERT_MSG (false, "Trying to get subnet-directed broadcast address with an all-ones netmask");
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}
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return Ipv4Address (Get () | mask.GetInverse ());
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}
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bool
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Ipv4Address::IsSubnetDirectedBroadcast (Ipv4Mask const &mask) const
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{
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if (mask == Ipv4Mask::GetOnes ())
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{
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// If the mask is 255.255.255.255, there is no subnet directed
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// broadcast for this address.
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return false;
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}
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return ( (Get () | mask.GetInverse ()) == Get () );
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}
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bool
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Ipv4Address::IsBroadcast (void) const
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{
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return (m_address == 0xffffffffU);
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}
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bool
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Ipv4Address::IsMulticast (void) const
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{
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//
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// Multicast addresses are defined as ranging from 224.0.0.0 through
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// 239.255.255.255 (which is E0000000 through EFFFFFFF in hex).
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//
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return (m_address >= 0xe0000000 && m_address <= 0xefffffff);
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}
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void
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Ipv4Address::Serialize (uint8_t buf[4]) const
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{
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buf[0] = (m_address >> 24) & 0xff;
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buf[1] = (m_address >> 16) & 0xff;
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buf[2] = (m_address >> 8) & 0xff;
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buf[3] = (m_address >> 0) & 0xff;
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}
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Ipv4Address
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Ipv4Address::Deserialize (const uint8_t buf[4])
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{
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Ipv4Address ipv4;
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ipv4.m_address = 0;
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ipv4.m_address |= buf[0];
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ipv4.m_address <<= 8;
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ipv4.m_address |= buf[1];
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ipv4.m_address <<= 8;
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ipv4.m_address |= buf[2];
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ipv4.m_address <<= 8;
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ipv4.m_address |= buf[3];
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return ipv4;
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}
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void
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Ipv4Address::Print (std::ostream &os) const
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{
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os << ((m_address >> 24) & 0xff) << "."
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<< ((m_address >> 16) & 0xff) << "."
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<< ((m_address >> 8) & 0xff) << "."
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<< ((m_address >> 0) & 0xff);
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}
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bool
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Ipv4Address::IsMatchingType (const Address &address)
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{
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return address.CheckCompatible (GetType (), 4);
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}
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Ipv4Address::operator Address () const
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{
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return ConvertTo ();
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}
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Address
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Ipv4Address::ConvertTo (void) const
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{
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uint8_t buf[4];
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Serialize (buf);
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return Address (GetType (), buf, 4);
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}
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Ipv4Address
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Ipv4Address::ConvertFrom (const Address &address)
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{
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NS_ASSERT (address.CheckCompatible (GetType (), 4));
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uint8_t buf[4];
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address.CopyTo (buf);
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return Deserialize (buf);
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}
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uint8_t
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Ipv4Address::GetType (void)
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{
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static uint8_t type = Address::Register ();
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return type;
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}
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Ipv4Address
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Ipv4Address::GetZero (void)
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{
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static Ipv4Address zero ("0.0.0.0");
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return zero;
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}
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Ipv4Address
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Ipv4Address::GetAny (void)
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{
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static Ipv4Address any ("0.0.0.0");
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return any;
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}
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Ipv4Address
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Ipv4Address::GetBroadcast (void)
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{
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static Ipv4Address broadcast ("255.255.255.255");
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return broadcast;
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}
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Ipv4Address
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Ipv4Address::GetLoopback (void)
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{
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Ipv4Address loopback ("127.0.0.1");
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return loopback;
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}
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size_t Ipv4AddressHash::operator()(Ipv4Address const &x) const
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{
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return x.Get ();
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}
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std::ostream& operator<< (std::ostream& os, Ipv4Address const& address)
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{
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address.Print (os);
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return os;
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}
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std::ostream& operator<< (std::ostream& os, Ipv4Mask const& mask)
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{
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mask.Print (os);
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return os;
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}
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std::istream & operator >> (std::istream &is, Ipv4Address &address)
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{
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std::string str;
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is >> str;
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address = Ipv4Address (str.c_str ());
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return is;
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}
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std::istream & operator >> (std::istream &is, Ipv4Mask &mask)
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{
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std::string str;
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is >> str;
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mask = Ipv4Mask (str.c_str ());
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return is;
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}
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bool operator == (Ipv4Mask const &a, Ipv4Mask const &b)
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{
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return a.IsEqual (b);
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}
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bool operator != (Ipv4Mask const &a, Ipv4Mask const &b)
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{
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return !a.IsEqual (b);
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}
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ATTRIBUTE_HELPER_CPP (Ipv4Address);
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ATTRIBUTE_HELPER_CPP (Ipv4Mask);
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} // namespace ns3
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