/**
 **	\file Ipv4Address.cpp
 **	\date  2006-09-21
 **	\author grymse@alhem.net
**/
/*
Copyright (C) 2007  Anders Hedstrom

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
#include <cstring>
#include "Ipv4Address.h"
#include "Utility.h"
#include "Parse.h"
#ifndef _WIN32
#include <netdb.h>
#endif


#ifdef SOCKETS_NAMESPACE
namespace SOCKETS_NAMESPACE {
#endif



Ipv4Address::Ipv4Address(port_t port) : m_valid(true)
{
	memset(&m_addr, 0, sizeof(m_addr));
	m_addr.sin_family = AF_INET;
	m_addr.sin_port = htons( port );
}


Ipv4Address::Ipv4Address(ipaddr_t a,port_t port) : m_valid(true)
{
	memset(&m_addr, 0, sizeof(m_addr));
	m_addr.sin_family = AF_INET;
	m_addr.sin_port = htons( port );
	memcpy(&m_addr.sin_addr, &a, sizeof(struct in_addr));
}


Ipv4Address::Ipv4Address(struct in_addr& a,port_t port) : m_valid(true)
{
	memset(&m_addr, 0, sizeof(m_addr));
	m_addr.sin_family = AF_INET;
	m_addr.sin_port = htons( port );
	m_addr.sin_addr = a;
}


Ipv4Address::Ipv4Address(const std::string& host,port_t port) : m_valid(false)
{
	memset(&m_addr, 0, sizeof(m_addr));
	m_addr.sin_family = AF_INET;
	m_addr.sin_port = htons( port );
	{
		ipaddr_t a;
		if (Utility::u2ip(host, a))
		{
			memcpy(&m_addr.sin_addr, &a, sizeof(struct in_addr));
			m_valid = true;
		}
	}
}


Ipv4Address::Ipv4Address(struct sockaddr_in& sa)
{
	m_addr = sa;
	m_valid = sa.sin_family == AF_INET;
}


Ipv4Address::~Ipv4Address()
{
}


Ipv4Address::operator struct sockaddr *()
{
	return (struct sockaddr *)&m_addr;
}


Ipv4Address::operator socklen_t()
{
	return sizeof(struct sockaddr_in);
}


void Ipv4Address::SetPort(port_t port)
{
	m_addr.sin_port = htons( port );
}


port_t Ipv4Address::GetPort()
{
	return ntohs( m_addr.sin_port );
}


bool Ipv4Address::Resolve(const std::string& hostname,struct in_addr& a)
{
	struct sockaddr_in sa;
	memset(&a, 0, sizeof(a));
	if (Utility::isipv4(hostname))
	{
		if (!Utility::u2ip(hostname, sa, AI_NUMERICHOST))
			return false;
		a = sa.sin_addr;
		return true;
	}
	if (!Utility::u2ip(hostname, sa))
		return false;
	a = sa.sin_addr;
	return true;
}


bool Ipv4Address::Reverse(struct in_addr& a,std::string& name)
{
	struct sockaddr_in sa;
	memset(&sa, 0, sizeof(sa));
	sa.sin_family = AF_INET;
	sa.sin_addr = a;
	return Utility::reverse((struct sockaddr *)&sa, sizeof(sa), name);
}


std::string Ipv4Address::Convert(bool include_port)
{
	if (include_port)
		return Convert(m_addr.sin_addr) + ":" + Utility::l2string(GetPort());
	return Convert(m_addr.sin_addr);
}


std::string Ipv4Address::Convert(struct in_addr& a)
{
	struct sockaddr_in sa;
	memset(&sa, 0, sizeof(sa));
	sa.sin_family = AF_INET;
	sa.sin_addr = a;
	std::string name;
	Utility::reverse((struct sockaddr *)&sa, sizeof(sa), name, NI_NUMERICHOST);
	return name;
}


void Ipv4Address::SetAddress(struct sockaddr *sa)
{
	memcpy(&m_addr, sa, sizeof(struct sockaddr_in));
}


int Ipv4Address::GetFamily()
{
	return m_addr.sin_family;
}


bool Ipv4Address::IsValid()
{
	return m_valid;
}


bool Ipv4Address::operator==(SocketAddress& a)
{
	if (a.GetFamily() != GetFamily())
		return false;
	if ((socklen_t)a != sizeof(m_addr))
		return false;
	struct sockaddr *sa = a;
	struct sockaddr_in *p = (struct sockaddr_in *)sa;
	if (p -> sin_port != m_addr.sin_port)
		return false;
	if (memcmp(&p -> sin_addr, &m_addr.sin_addr, 4))
		return false;
	return true;
}


std::auto_ptr<SocketAddress> Ipv4Address::GetCopy()
{
	return std::auto_ptr<SocketAddress>(new Ipv4Address(m_addr));
}


std::string Ipv4Address::Reverse()
{
	std::string tmp;
	Reverse(m_addr.sin_addr, tmp);
	return tmp;
}


#ifdef SOCKETS_NAMESPACE
} // namespace SOCKETS_NAMESPACE {
#endif