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IPAddressImpl.cpp
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770 lines (634 loc) · 18.5 KB
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//
// IPAddress.cpp
//
// $Id: //poco/1.4/Net/src/IPAddress.cpp#5 $
//
// Library: Net
// Package: NetCore
// Module: IPAddress
//
// Copyright (c) 2005-2011, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#include "Poco/Net/IPAddressImpl.h"
#include "Poco/Net/NetException.h"
#include "Poco/RefCountedObject.h"
#include "Poco/NumberFormatter.h"
#include "Poco/String.h"
#include "Poco/Types.h"
using Poco::RefCountedObject;
using Poco::NumberFormatter;
using Poco::toLower;
using Poco::UInt8;
using Poco::UInt16;
using Poco::UInt32;
namespace {
template <typename T>
unsigned maskBits(T val, unsigned size)
/// Returns the length of the mask (number of bits set in val).
/// The val should be either all zeros or two contiguos areas of 1s and 0s.
/// The algorithm ignores invalid non-contiguous series of 1s and treats val
/// as if all bits between MSb and last non-zero bit are set to 1.
{
unsigned count = 0;
if (val)
{
val = (val ^ (val - 1)) >> 1;
for (count = 0; val; ++count) val >>= 1;
}
else count = size;
return size - count;
}
} // namespace
namespace Poco {
namespace Net {
namespace Impl {
//
// IPAddressImpl
//
IPAddressImpl::IPAddressImpl()
{
}
IPAddressImpl::~IPAddressImpl()
{
}
//
// IPv4AddressImpl
//
IPv4AddressImpl::IPv4AddressImpl()
{
std::memset(&_addr, 0, sizeof(_addr));
}
IPv4AddressImpl::IPv4AddressImpl(const void* addr)
{
std::memcpy(&_addr, addr, sizeof(_addr));
}
IPv4AddressImpl::IPv4AddressImpl(unsigned prefix)
{
UInt32 addr = (prefix == 32) ? 0xffffffff : ~(0xffffffff >> prefix);
_addr.s_addr = htonl(addr);
}
IPv4AddressImpl::IPv4AddressImpl(const IPv4AddressImpl& addr)
{
std::memcpy(&_addr, &addr._addr, sizeof(_addr));
}
IPv4AddressImpl& IPv4AddressImpl::operator = (const IPv4AddressImpl& addr)
{
std::memcpy(&_addr, &addr._addr, sizeof(_addr));
return *this;
}
std::string IPv4AddressImpl::toString() const
{
const UInt8* bytes = reinterpret_cast<const UInt8*>(&_addr);
std::string result;
result.reserve(16);
NumberFormatter::append(result, bytes[0]);
result.append(".");
NumberFormatter::append(result, bytes[1]);
result.append(".");
NumberFormatter::append(result, bytes[2]);
result.append(".");
NumberFormatter::append(result, bytes[3]);
return result;
}
poco_socklen_t IPv4AddressImpl::length() const
{
return sizeof(_addr);
}
const void* IPv4AddressImpl::addr() const
{
return &_addr;
}
IPAddressImpl::Family IPv4AddressImpl::family() const
{
return IPAddressImpl::IPv4;
}
int IPv4AddressImpl::af() const
{
return AF_INET;
}
unsigned IPv4AddressImpl::prefixLength() const
{
return maskBits(ntohl(_addr.s_addr), 32);
}
Poco::UInt32 IPv4AddressImpl::scope() const
{
return 0;
}
bool IPv4AddressImpl::isWildcard() const
{
return _addr.s_addr == INADDR_ANY;
}
bool IPv4AddressImpl::isBroadcast() const
{
return _addr.s_addr == INADDR_NONE;
}
bool IPv4AddressImpl::isLoopback() const
{
return (ntohl(_addr.s_addr) & 0xFF000000) == 0x7F000000; // 127.0.0.1 to 127.255.255.255
}
bool IPv4AddressImpl::isMulticast() const
{
return (ntohl(_addr.s_addr) & 0xF0000000) == 0xE0000000; // 224.0.0.0/24 to 239.0.0.0/24
}
bool IPv4AddressImpl::isLinkLocal() const
{
return (ntohl(_addr.s_addr) & 0xFFFF0000) == 0xA9FE0000; // 169.254.0.0/16
}
bool IPv4AddressImpl::isSiteLocal() const
{
UInt32 addr = ntohl(_addr.s_addr);
return (addr & 0xFF000000) == 0x0A000000 || // 10.0.0.0/24
(addr & 0xFFFF0000) == 0xC0A80000 || // 192.68.0.0/16
(addr >= 0xAC100000 && addr <= 0xAC1FFFFF); // 172.16.0.0 to 172.31.255.255
}
bool IPv4AddressImpl::isIPv4Compatible() const
{
return true;
}
bool IPv4AddressImpl::isIPv4Mapped() const
{
return true;
}
bool IPv4AddressImpl::isWellKnownMC() const
{
return (ntohl(_addr.s_addr) & 0xFFFFFF00) == 0xE0000000; // 224.0.0.0/8
}
bool IPv4AddressImpl::isNodeLocalMC() const
{
return false;
}
bool IPv4AddressImpl::isLinkLocalMC() const
{
return (ntohl(_addr.s_addr) & 0xFF000000) == 0xE0000000; // 244.0.0.0/24
}
bool IPv4AddressImpl::isSiteLocalMC() const
{
return (ntohl(_addr.s_addr) & 0xFFFF0000) == 0xEFFF0000; // 239.255.0.0/16
}
bool IPv4AddressImpl::isOrgLocalMC() const
{
return (ntohl(_addr.s_addr) & 0xFFFF0000) == 0xEFC00000; // 239.192.0.0/16
}
bool IPv4AddressImpl::isGlobalMC() const
{
UInt32 addr = ntohl(_addr.s_addr);
return addr >= 0xE0000100 && addr <= 0xEE000000; // 224.0.1.0 to 238.255.255.255
}
IPv4AddressImpl IPv4AddressImpl::parse(const std::string& addr)
{
if (addr.empty()) return IPv4AddressImpl();
#if defined(_WIN32)
struct in_addr ia;
ia.s_addr = inet_addr(addr.c_str());
if (ia.s_addr == INADDR_NONE && addr != "255.255.255.255")
return IPv4AddressImpl();
else
return IPv4AddressImpl(&ia);
#else
#if __GNUC__ < 3 || defined(POCO_VXWORKS)
struct in_addr ia;
ia.s_addr = inet_addr(const_cast<char*>(addr.c_str()));
if (ia.s_addr == INADDR_NONE && addr != "255.255.255.255")
return IPv4AddressImpl();
else
return IPv4AddressImpl(&ia);
#else
struct in_addr ia;
if (inet_aton(addr.c_str(), &ia))
return IPv4AddressImpl(&ia);
else
return IPv4AddressImpl();
#endif
#endif
}
void IPv4AddressImpl::mask(const IPAddressImpl* pMask, const IPAddressImpl* pSet)
{
poco_assert (pMask->af() == AF_INET && pSet->af() == AF_INET);
_addr.s_addr &= static_cast<const IPv4AddressImpl*>(pMask)->_addr.s_addr;
_addr.s_addr |= static_cast<const IPv4AddressImpl*>(pSet)->_addr.s_addr & ~static_cast<const IPv4AddressImpl*>(pMask)->_addr.s_addr;
}
IPAddressImpl* IPv4AddressImpl::clone() const
{
return new IPv4AddressImpl(&_addr);
}
IPv4AddressImpl IPv4AddressImpl::operator & (const IPv4AddressImpl& addr) const
{
IPv4AddressImpl result(&_addr);
result._addr.s_addr &= addr._addr.s_addr;
return result;
}
IPv4AddressImpl IPv4AddressImpl::operator | (const IPv4AddressImpl& addr) const
{
IPv4AddressImpl result(&_addr);
result._addr.s_addr |= addr._addr.s_addr;
return result;
}
IPv4AddressImpl IPv4AddressImpl::operator ^ (const IPv4AddressImpl& addr) const
{
IPv4AddressImpl result(&_addr);
result._addr.s_addr ^= addr._addr.s_addr;
return result;
}
IPv4AddressImpl IPv4AddressImpl::operator ~ () const
{
IPv4AddressImpl result(&_addr);
result._addr.s_addr ^= 0xffffffff;
return result;
}
bool IPv4AddressImpl::operator == (const IPv4AddressImpl& addr) const
{
return 0 == std::memcmp(&addr._addr, &_addr, sizeof(_addr));
}
bool IPv4AddressImpl::operator != (const IPv4AddressImpl& addr) const
{
return !(*this == addr);
}
#if defined(POCO_HAVE_IPv6)
//
// IPv6AddressImpl
//
IPv6AddressImpl::IPv6AddressImpl(): _scope(0)
{
std::memset(&_addr, 0, sizeof(_addr));
}
IPv6AddressImpl::IPv6AddressImpl(const void* addr): _scope(0)
{
std::memcpy(&_addr, addr, sizeof(_addr));
}
IPv6AddressImpl::IPv6AddressImpl(const void* addr, Poco::UInt32 scope): _scope(scope)
{
std::memcpy(&_addr, addr, sizeof(_addr));
}
IPv6AddressImpl::IPv6AddressImpl(const IPv6AddressImpl& addr): _scope(addr._scope)
{
std::memcpy((void*) &_addr, (void*) &addr._addr, sizeof(_addr));
}
IPv6AddressImpl& IPv6AddressImpl::operator = (const IPv6AddressImpl& addr)
{
_scope = addr._scope;
std::memcpy(&_addr, &addr._addr, sizeof(_addr));
return *this;
}
IPv6AddressImpl::IPv6AddressImpl(unsigned prefix):
_scope(0)
{
unsigned i = 0;
#ifdef POCO_OS_FAMILY_WINDOWS
for (; prefix >= 16; ++i, prefix -= 16) {
_addr.s6_addr16[i] = 0xffff;
}
if (prefix > 0)
_addr.s6_addr16[i++] = htons(~(0xffff >> prefix));
while (i < 8)
_addr.s6_addr16[i++] = 0;
#else
for (; prefix >= 32; ++i, prefix -= 32) {
_addr.s6_addr32[i] = 0xffffffff;
}
if (prefix > 0)
_addr.s6_addr32[i++] = htonl(~(0xffffffffU >> prefix));
while (i < 4)
_addr.s6_addr32[i++] = 0;
#endif
}
std::string IPv6AddressImpl::toString() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
if (isIPv4Compatible() || isIPv4Mapped())
{
std::string result;
result.reserve(24);
if (words[5] == 0)
result.append("::");
else
result.append("::ffff:");
const UInt8* bytes = reinterpret_cast<const UInt8*>(&_addr);
NumberFormatter::append(result, bytes[12]);
result.append(".");
NumberFormatter::append(result, bytes[13]);
result.append(".");
NumberFormatter::append(result, bytes[14]);
result.append(".");
NumberFormatter::append(result, bytes[15]);
return result;
}
else
{
std::string result;
result.reserve(64);
bool zeroSequence = false;
int i = 0;
while (i < 8)
{
if (!zeroSequence && words[i] == 0)
{
int zi = i;
while (zi < 8 && words[zi] == 0) ++zi;
if (zi > i + 1)
{
i = zi;
result.append(":");
zeroSequence = true;
}
}
if (i > 0) result.append(":");
if (i < 8) NumberFormatter::appendHex(result, ntohs(words[i++]));
}
if (_scope > 0)
{
result.append("%");
#if defined(_WIN32)
NumberFormatter::append(result, _scope);
#else
char buffer[IFNAMSIZ];
if (if_indextoname(_scope, buffer))
{
result.append(buffer);
}
else
{
NumberFormatter::append(result, _scope);
}
#endif
}
return toLower(result);
}
}
poco_socklen_t IPv6AddressImpl::length() const
{
return sizeof(_addr);
}
const void* IPv6AddressImpl::addr() const
{
return &_addr;
}
IPAddressImpl::Family IPv6AddressImpl::family() const
{
return IPAddressImpl::IPv6;
}
int IPv6AddressImpl::af() const
{
return AF_INET6;
}
unsigned IPv6AddressImpl::prefixLength() const
{
unsigned bits = 0;
unsigned bitPos = 128;
#if defined(POCO_OS_FAMILY_UNIX)
for (int i = 3; i >= 0; --i)
{
unsigned addr = ntohl(_addr.s6_addr32[i]);
if ((bits = maskBits(addr, 32))) return (bitPos - (32 - bits));
bitPos -= 32;
}
return 0;
#elif defined(POCO_OS_FAMILY_WINDOWS)
for (int i = 7; i >= 0; --i)
{
unsigned short addr = ntohs(_addr.s6_addr16[i]);
if ((bits = maskBits(addr, 16))) return (bitPos - (16 - bits));
bitPos -= 16;
}
return 0;
#else
#warning prefixLength() not implemented
throw NotImplementedException("prefixLength() not implemented");
#endif
}
Poco::UInt32 IPv6AddressImpl::scope() const
{
return _scope;
}
bool IPv6AddressImpl::isWildcard() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return words[0] == 0 && words[1] == 0 && words[2] == 0 && words[3] == 0 &&
words[4] == 0 && words[5] == 0 && words[6] == 0 && words[7] == 0;
}
bool IPv6AddressImpl::isBroadcast() const
{
return false;
}
bool IPv6AddressImpl::isLoopback() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return words[0] == 0 && words[1] == 0 && words[2] == 0 && words[3] == 0 &&
words[4] == 0 && words[5] == 0 && words[6] == 0 && ntohs(words[7]) == 0x0001;
}
bool IPv6AddressImpl::isMulticast() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return (ntohs(words[0]) & 0xFFE0) == 0xFF00;
}
bool IPv6AddressImpl::isLinkLocal() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return (ntohs(words[0]) & 0xFFE0) == 0xFE80;
}
bool IPv6AddressImpl::isSiteLocal() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return ((ntohs(words[0]) & 0xFFE0) == 0xFEC0) || ((ntohs(words[0]) & 0xFF00) == 0xFC00);
}
bool IPv6AddressImpl::isIPv4Compatible() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return words[0] == 0 && words[1] == 0 && words[2] == 0 && words[3] == 0 && words[4] == 0 && words[5] == 0;
}
bool IPv6AddressImpl::isIPv4Mapped() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return words[0] == 0 && words[1] == 0 && words[2] == 0 && words[3] == 0 && words[4] == 0 && ntohs(words[5]) == 0xFFFF;
}
bool IPv6AddressImpl::isWellKnownMC() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return (ntohs(words[0]) & 0xFFF0) == 0xFF00;
}
bool IPv6AddressImpl::isNodeLocalMC() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return (ntohs(words[0]) & 0xFFEF) == 0xFF01;
}
bool IPv6AddressImpl::isLinkLocalMC() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return (ntohs(words[0]) & 0xFFEF) == 0xFF02;
}
bool IPv6AddressImpl::isSiteLocalMC() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return (ntohs(words[0]) & 0xFFEF) == 0xFF05;
}
bool IPv6AddressImpl::isOrgLocalMC() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return (ntohs(words[0]) & 0xFFEF) == 0xFF08;
}
bool IPv6AddressImpl::isGlobalMC() const
{
const UInt16* words = reinterpret_cast<const UInt16*>(&_addr);
return (ntohs(words[0]) & 0xFFEF) == 0xFF0F;
}
IPv6AddressImpl IPv6AddressImpl::parse(const std::string& addr)
{
if (addr.empty()) return IPv6AddressImpl();
#if defined(_WIN32)
struct addrinfo* pAI;
struct addrinfo hints;
std::memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_NUMERICHOST;
int rc = getaddrinfo(addr.c_str(), NULL, &hints, &pAI);
if (rc == 0)
{
IPv6AddressImpl result = IPv6AddressImpl(&reinterpret_cast<struct sockaddr_in6*>(pAI->ai_addr)->sin6_addr, static_cast<int>(reinterpret_cast<struct sockaddr_in6*>(pAI->ai_addr)->sin6_scope_id));
freeaddrinfo(pAI);
return result;
}
else return IPv6AddressImpl();
#else
struct in6_addr ia;
std::string::size_type pos = addr.find('%');
if (std::string::npos != pos)
{
std::string::size_type start = ('[' == addr[0]) ? 1 : 0;
std::string unscopedAddr(addr, start, pos - start);
std::string scope(addr, pos + 1, addr.size() - start - pos);
Poco::UInt32 scopeId(0);
if (!(scopeId = if_nametoindex(scope.c_str())))
return IPv6AddressImpl();
if (inet_pton(AF_INET6, unscopedAddr.c_str(), &ia) == 1)
return IPv6AddressImpl(&ia, scopeId);
else
return IPv6AddressImpl();
}
else
{
if (inet_pton(AF_INET6, addr.c_str(), &ia) == 1)
return IPv6AddressImpl(&ia);
else
return IPv6AddressImpl();
}
#endif
}
void IPv6AddressImpl::mask(const IPAddressImpl* pMask, const IPAddressImpl* pSet)
{
throw Poco::NotImplementedException("mask() is only supported for IPv4 addresses");
}
IPAddressImpl* IPv6AddressImpl::clone() const
{
return new IPv6AddressImpl(&_addr, _scope);
}
IPv6AddressImpl IPv6AddressImpl::operator & (const IPv6AddressImpl& addr) const
{
IPv6AddressImpl result(&_addr);
#ifdef POCO_OS_FAMILY_WINDOWS
result._addr.s6_addr16[0] &= addr._addr.s6_addr16[0];
result._addr.s6_addr16[1] &= addr._addr.s6_addr16[1];
result._addr.s6_addr16[2] &= addr._addr.s6_addr16[2];
result._addr.s6_addr16[3] &= addr._addr.s6_addr16[3];
result._addr.s6_addr16[4] &= addr._addr.s6_addr16[4];
result._addr.s6_addr16[5] &= addr._addr.s6_addr16[5];
result._addr.s6_addr16[6] &= addr._addr.s6_addr16[6];
result._addr.s6_addr16[7] &= addr._addr.s6_addr16[7];
#else
result._addr.s6_addr32[0] &= addr._addr.s6_addr32[0];
result._addr.s6_addr32[1] &= addr._addr.s6_addr32[1];
result._addr.s6_addr32[2] &= addr._addr.s6_addr32[2];
result._addr.s6_addr32[3] &= addr._addr.s6_addr32[3];
#endif
return result;
}
IPv6AddressImpl IPv6AddressImpl::operator | (const IPv6AddressImpl& addr) const
{
IPv6AddressImpl result(&_addr);
#ifdef POCO_OS_FAMILY_WINDOWS
result._addr.s6_addr16[0] |= addr._addr.s6_addr16[0];
result._addr.s6_addr16[1] |= addr._addr.s6_addr16[1];
result._addr.s6_addr16[2] |= addr._addr.s6_addr16[2];
result._addr.s6_addr16[3] |= addr._addr.s6_addr16[3];
result._addr.s6_addr16[4] |= addr._addr.s6_addr16[4];
result._addr.s6_addr16[5] |= addr._addr.s6_addr16[5];
result._addr.s6_addr16[6] |= addr._addr.s6_addr16[6];
result._addr.s6_addr16[7] |= addr._addr.s6_addr16[7];
#else
result._addr.s6_addr32[0] |= addr._addr.s6_addr32[0];
result._addr.s6_addr32[1] |= addr._addr.s6_addr32[1];
result._addr.s6_addr32[2] |= addr._addr.s6_addr32[2];
result._addr.s6_addr32[3] |= addr._addr.s6_addr32[3];
#endif
return result;
}
IPv6AddressImpl IPv6AddressImpl::operator ^ (const IPv6AddressImpl& addr) const
{
IPv6AddressImpl result(&_addr);
#ifdef POCO_OS_FAMILY_WINDOWS
result._addr.s6_addr16[0] ^= addr._addr.s6_addr16[0];
result._addr.s6_addr16[1] ^= addr._addr.s6_addr16[1];
result._addr.s6_addr16[2] ^= addr._addr.s6_addr16[2];
result._addr.s6_addr16[3] ^= addr._addr.s6_addr16[3];
result._addr.s6_addr16[4] ^= addr._addr.s6_addr16[4];
result._addr.s6_addr16[5] ^= addr._addr.s6_addr16[5];
result._addr.s6_addr16[6] ^= addr._addr.s6_addr16[6];
result._addr.s6_addr16[7] ^= addr._addr.s6_addr16[7];
#else
result._addr.s6_addr32[0] ^= addr._addr.s6_addr32[0];
result._addr.s6_addr32[1] ^= addr._addr.s6_addr32[1];
result._addr.s6_addr32[2] ^= addr._addr.s6_addr32[2];
result._addr.s6_addr32[3] ^= addr._addr.s6_addr32[3];
#endif
return result;
}
IPv6AddressImpl IPv6AddressImpl::operator ~ () const
{
IPv6AddressImpl result(&_addr);
#ifdef POCO_OS_FAMILY_WINDOWS
result._addr.s6_addr16[0] ^= 0xffff;
result._addr.s6_addr16[1] ^= 0xffff;
result._addr.s6_addr16[2] ^= 0xffff;
result._addr.s6_addr16[3] ^= 0xffff;
result._addr.s6_addr16[4] ^= 0xffff;
result._addr.s6_addr16[5] ^= 0xffff;
result._addr.s6_addr16[6] ^= 0xffff;
result._addr.s6_addr16[7] ^= 0xffff;
#else
result._addr.s6_addr32[0] ^= 0xffffffff;
result._addr.s6_addr32[1] ^= 0xffffffff;
result._addr.s6_addr32[2] ^= 0xffffffff;
result._addr.s6_addr32[3] ^= 0xffffffff;
#endif
return result;
}
bool IPv6AddressImpl::operator == (const IPv6AddressImpl& addr) const
{
return 0 == std::memcmp(&addr._addr, &_addr, sizeof(_addr));
}
bool IPv6AddressImpl::operator != (const IPv6AddressImpl& addr) const
{
return !(*this == addr);
}
#endif // POCO_HAVE_IPv6
} } } // namespace Poco::Net::Impl