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386 lines (307 loc) · 7.94 KB
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//
// SocketAddress.cpp
//
// $Id: //poco/Main/Net/src/SocketAddress.cpp#14 $
//
// Library: Net
// Package: NetCore
// Module: SocketAddress
//
// Copyright (c) 2005-2006, 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/SocketAddress.h"
#include "Poco/Net/IPAddress.h"
#include "Poco/Net/NetException.h"
#include "Poco/Net/DNS.h"
#include "Poco/RefCountedObject.h"
#include "Poco/NumberParser.h"
#include "Poco/NumberFormatter.h"
#include <algorithm>
#include <cstring>
using Poco::RefCountedObject;
using Poco::NumberParser;
using Poco::NumberFormatter;
using Poco::UInt16;
using Poco::InvalidArgumentException;
namespace Poco {
namespace Net {
//
// SocketAddressImpl
//
class SocketAddressImpl: public RefCountedObject
{
public:
virtual IPAddress host() const = 0;
virtual UInt16 port() const = 0;
virtual poco_socklen_t length() const = 0;
virtual const struct sockaddr* addr() const = 0;
virtual int af() const = 0;
protected:
SocketAddressImpl()
{
}
virtual ~SocketAddressImpl()
{
}
private:
SocketAddressImpl(const SocketAddressImpl&);
SocketAddressImpl& operator = (const SocketAddressImpl&);
};
class IPv4SocketAddressImpl: public SocketAddressImpl
{
public:
IPv4SocketAddressImpl()
{
std::memset(&_addr, 0, sizeof(_addr));
_addr.sin_family = AF_INET;
poco_set_sin_len(&_addr);
}
IPv4SocketAddressImpl(const struct sockaddr_in* addr)
{
std::memcpy(&_addr, addr, sizeof(_addr));
}
IPv4SocketAddressImpl(const void* addr, UInt16 port)
{
std::memset(&_addr, 0, sizeof(_addr));
_addr.sin_family = AF_INET;
std::memcpy(&_addr.sin_addr, addr, sizeof(_addr.sin_addr));
_addr.sin_port = port;
}
IPAddress host() const
{
return IPAddress(&_addr.sin_addr, sizeof(_addr.sin_addr));
}
UInt16 port() const
{
return _addr.sin_port;
}
poco_socklen_t length() const
{
return sizeof(_addr);
}
const struct sockaddr* addr() const
{
return reinterpret_cast<const struct sockaddr*>(&_addr);
}
int af() const
{
return _addr.sin_family;
}
private:
struct sockaddr_in _addr;
};
#if defined(POCO_HAVE_IPv6)
class IPv6SocketAddressImpl: public SocketAddressImpl
{
public:
IPv6SocketAddressImpl(const struct sockaddr_in6* addr)
{
std::memcpy(&_addr, addr, sizeof(_addr));
}
IPv6SocketAddressImpl(const void* addr, UInt16 port)
{
std::memset(&_addr, 0, sizeof(_addr));
_addr.sin6_family = AF_INET6;
poco_set_sin6_len(&_addr);
std::memcpy(&_addr.sin6_addr, addr, sizeof(_addr.sin6_addr));
_addr.sin6_port = port;
}
IPAddress host() const
{
return IPAddress(&_addr.sin6_addr, sizeof(_addr.sin6_addr));
}
UInt16 port() const
{
return _addr.sin6_port;
}
poco_socklen_t length() const
{
return sizeof(_addr);
}
const struct sockaddr* addr() const
{
return reinterpret_cast<const struct sockaddr*>(&_addr);
}
int af() const
{
return _addr.sin6_family;
}
private:
struct sockaddr_in6 _addr;
};
#endif // POCO_HAVE_IPv6
//
// SocketAddress
//
SocketAddress::SocketAddress()
{
_pImpl = new IPv4SocketAddressImpl;
}
SocketAddress::SocketAddress(const IPAddress& addr, Poco::UInt16 port)
{
init(addr, port);
}
SocketAddress::SocketAddress(const std::string& addr, Poco::UInt16 port)
{
init(addr, port);
}
SocketAddress::SocketAddress(const std::string& addr, const std::string& port)
{
init(addr, resolveService(port));
}
SocketAddress::SocketAddress(const std::string& hostAndPort)
{
poco_assert (!hostAndPort.empty());
std::string host;
std::string port;
std::string::const_iterator it = hostAndPort.begin();
std::string::const_iterator end = hostAndPort.end();
if (*it == '[')
{
++it;
while (it != end && *it != ']') host += *it++;
if (it == end) throw InvalidArgumentException("Malformed IPv6 address");
++it;
}
else
{
while (it != end && *it != ':') host += *it++;
}
if (it != end && *it == ':')
{
++it;
while (it != end) port += *it++;
}
else throw InvalidArgumentException("Missing port number");
init(host, resolveService(port));
}
SocketAddress::SocketAddress(const SocketAddress& addr)
{
_pImpl = addr._pImpl;
_pImpl->duplicate();
}
SocketAddress::SocketAddress(const struct sockaddr* addr, poco_socklen_t length)
{
if (length == sizeof(struct sockaddr_in))
_pImpl = new IPv4SocketAddressImpl(reinterpret_cast<const struct sockaddr_in*>(addr));
#if defined(POCO_HAVE_IPv6)
else if (length == sizeof(struct sockaddr_in6))
_pImpl = new IPv6SocketAddressImpl(reinterpret_cast<const struct sockaddr_in6*>(addr));
#endif
else throw Poco::InvalidArgumentException("Invalid address length passed to SocketAddress()");
}
SocketAddress::~SocketAddress()
{
_pImpl->release();
}
SocketAddress& SocketAddress::operator = (const SocketAddress& addr)
{
if (&addr != this)
{
_pImpl->release();
_pImpl = addr._pImpl;
_pImpl->duplicate();
}
return *this;
}
void SocketAddress::swap(SocketAddress& addr)
{
std::swap(_pImpl, addr._pImpl);
}
IPAddress SocketAddress::host() const
{
return _pImpl->host();
}
Poco::UInt16 SocketAddress::port() const
{
return ntohs(_pImpl->port());
}
poco_socklen_t SocketAddress::length() const
{
return _pImpl->length();
}
const struct sockaddr* SocketAddress::addr() const
{
return _pImpl->addr();
}
int SocketAddress::af() const
{
return _pImpl->af();
}
std::string SocketAddress::toString() const
{
std::string result;
if (host().family() == IPAddress::IPv6)
result.append("[");
result.append(host().toString());
if (host().family() == IPAddress::IPv6)
result.append("]");
result.append(":");
NumberFormatter::append(result, port());
return result;
}
void SocketAddress::init(const IPAddress& host, Poco::UInt16 port)
{
if (host.family() == IPAddress::IPv4)
_pImpl = new IPv4SocketAddressImpl(host.addr(), htons(port));
#if defined(POCO_HAVE_IPv6)
else if (host.family() == IPAddress::IPv6)
_pImpl = new IPv6SocketAddressImpl(host.addr(), htons(port));
#endif
else throw Poco::NotImplementedException("unsupported IP address family");
}
void SocketAddress::init(const std::string& host, Poco::UInt16 port)
{
IPAddress ip;
if (IPAddress::tryParse(host, ip))
{
init(ip, port);
}
else
{
HostEntry he = DNS::hostByName(host);
if (he.addresses().size() > 0)
init(he.addresses()[0], port);
else throw HostNotFoundException("No address found for host", host);
}
}
Poco::UInt16 SocketAddress::resolveService(const std::string& service)
{
unsigned port;
if (NumberParser::tryParseUnsigned(service, port) && port <= 0xFFFF)
{
return (UInt16) port;
}
else
{
struct servent* se = getservbyname(service.c_str(), NULL);
if (se)
return ntohs(se->s_port);
else
throw ServiceNotFoundException(service);
}
}
} } // namespace Poco::Net