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// NetIPAddress.cpp: implementation of the CNetIPAddress class.
//
// Written by Marat Bedretdinov (maratb@hotmail.com)
// Copyright (c) 2000.
//
// This code may be used in compiled form in any way you desire. This
// file may be redistributed unmodified by any means PROVIDING it is
// not sold for profit without the authors written consent, and
// providing that this notice and the authors name is included.
//
// If the source code in this file is used in any commercial application
// then acknowledgement must be made to the author of this file
// and permissions to use this file are requested from the author
//
// (in whatever form you wish).// This file is provided "as is" with no expressed or implied warranty.
// The author accepts no liability if it causes any damage whatsoever.
// It's free - so you get what you pay for.//
#include "stdafx.h"
#include "NetIPAddress.h"
#include "NetAddressScanner.h"
#ifdef _WIN32
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
#endif
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CNetIPAddress::CNetIPAddress()
{
}
CNetIPAddress::~CNetIPAddress()
{
}
string CNetIPAddress::MakeLocalHostAddr(const char* strPort)
{
string strAddr;
char szBuff[1000]; // enough ?
int nSize = sizeof(szBuff);
// get the name from the local hosts name file
if (gethostname(szBuff, nSize) == SOCKET_ERROR) {
long i = GetLastSocketError();
return strAddr;
}
hostent* phe = 0;
// get the hostent* struct back
phe = gethostbyname(szBuff);
// in_addr addr;
// save the network formated addr and the port number into addr
ulong ip = *(((ulong**)(phe->h_addr_list))[0]);
sockaddr_in srv_addr;
srv_addr.sin_addr.s_addr = ip;
// memcpy((char*)&(addr), phe->h_addr_list[0], phe->h_length);
strAddr = "addr='";
strAddr += inet_ntoa(srv_addr.sin_addr);
strAddr += "';";
if (strPort) {
strAddr += "port='";
strAddr += strPort;
strAddr += "';";
}
return strAddr;
}
void CNetIPAddress::GetLocalHostAddr(sockaddr_in& addr) const
{
// zero out the structure
memset(&addr, 0, sizeof(addr));
// dealing with Internet
addr.sin_family = AF_INET;
// Set IP address
ulong& sin_addr = *((ulong*)&(addr.sin_addr));
// ulong ip = g_addr_stu(GetHostName().c_str());
// sin_addr = htonl(ip);
sin_addr = inet_addr(GetHostName());
//
memset(addr.sin_zero, 0, sizeof(addr.sin_zero));
// port on which this listener will sit
int pn = GetPortNumber();
addr.sin_port = (pn != -1) ? htons(pn) : 0;
}
string CNetIPAddress::GetLocalHostName() const
{
char szBuff[500]; // enough ?
int nSize = sizeof(szBuff);
// try to get the name from the local hosts name file
int nErr = gethostname(szBuff, nSize);
if (nErr) HandleException(ERR_NET_FAILED_RESOLVE_ADDRESS, "void CNetIPAddress::GetLocalHostAddr()");
return string(szBuff);
}
CNetAddress* CNetIPAddress::Clone() const
{
return new CNetIPAddress;
}
void CNetIPAddress::GetRemoteHostAddr(sockaddr_in& addr) const
{
hostent* phe = 0;
// zero out the structure
memset(&addr, 0, sizeof(addr));
// dealing with Internet
addr.sin_family = AF_INET;
// get the hostent* struct back based on the remote host ip addr or its host name
phe = gethostbyname(GetHostName());
if (!phe) HandleException(ERR_NET_FAILED_RESOLVE_ADDRESS, "void CNetIPAddress::GetRemoteHostAddr()");
// save the network formated addr and the port number into addr
memcpy((char*)&(addr.sin_addr), phe->h_addr_list[0], phe->h_length);
int pn = GetPortNumber();
addr.sin_port = (pn != -1) ? htons(pn) : 0;
}
const char* CNetIPAddress::GetHostName() const
{
return m_parser.GetValue("addr");
}
int CNetIPAddress::GetPortNumber() const
{
const char* szValue = m_parser.GetValue("port");
if (szValue)
return atoi(szValue);
return -1;
}
bool CNetIPAddress::IsEmpty() const
{
if (!GetHostName() && GetPortNumber() == -1)
return true;
return false;
}
void CNetIPAddress::SetConnectString(const char* szAddr)
{
CNetAddressScanner proto;
m_parser.SetScannerType(proto);
m_parser.SetString(szAddr);
}
void CNetIPAddress::SetConnectString(sockaddr* sockAddr)
{
struct sockaddr_in* InetSockAddr;
char* addr;
char ip[50];
char port[10];
InetSockAddr = reinterpret_cast<sockaddr_in*>(sockAddr);
addr=(char*)(&InetSockAddr->sin_addr);
// Make a string
sprintf(ip,"%u.%u.%u.%u",0xFF&addr[0],0xFF&addr[1],0xFF&addr[2],0xFF&addr[3]);
// Get the port number
sprintf(port, "%u", ntohs(InetSockAddr->sin_port));
// form the connect string
string s = "addr='";
s += ip;
s += "';port='";
s += port;
s += "';";
SetConnectString(s.c_str());
}
void CNetIPAddress::HandleException(int nNetErr, const char* strSrc) const
{
throw CNetSockException(nNetErr, GetLastSocketError(), strSrc);
}
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