www.pudn.com > Nethief.rar > IPToLocal.cpp

// IPToLocal.cpp: implementation of the CIPToLocal class. 
// 
////////////////////////////////////////////////////////////////////// 
 
#include "stdafx.h" 
#include "Nethief.h" 
#include "IPToLocal.h" 
 
#ifdef _DEBUG 
#undef THIS_FILE 
static char THIS_FILE[]=__FILE__; 
#define new DEBUG_NEW 
#endif 
 
////////////////////////////////////////////////////////////////////// 
// Construction/Destruction 
////////////////////////////////////////////////////////////////////// 
 
CIPToLocal::CIPToLocal() 
{ 
 
} 
 
CIPToLocal::~CIPToLocal() 
{ 
 
} 
 
void CIPToLocal::LoadIPAddress(CString strFilename) 
{ 
	CFile File(strFilename, 
		CFile::modeRead|CFile::shareDenyNone); 
	File.Seek(194,CFile::begin); 
 
	IP_ADDRESS_SEGMENT_OF_FILE stIPAddressSegmentOfFile; 
	IP_ADDRESS_SEGMENT_OF_LIST stIPAddressSegmentOfList; 
	while(TRUE) 
	{ 
		UINT nRet=File.Read(&stIPAddressSegmentOfFile,sizeof(stIPAddressSegmentOfFile)); 
		if(nRet!=sizeof(stIPAddressSegmentOfFile)) 
			break; 
		////////////////////////////////////////////////////////////// 
		stIPAddressSegmentOfFile.cStartIP[15]='\0'; 
		CString strStartIP=stIPAddressSegmentOfFile.cStartIP; 
 
		stIPAddressSegmentOfList.dwStartIP=atoi(strStartIP.Mid(0,3))*256*256*256+atoi(strStartIP.Mid(4,3))*256*256+atoi(strStartIP.Mid(8,3))*256+atoi(strStartIP.Mid(12,3)); 
		////////////////////////////////////////// 
		stIPAddressSegmentOfFile.cEndIP[15]='\0'; 
		CString strEndIP=stIPAddressSegmentOfFile.cEndIP; 
 
		stIPAddressSegmentOfList.dwEndIP=atoi(strEndIP.Mid(0,3))*256*256*256+atoi(strEndIP.Mid(4,3))*256*256+atoi(strEndIP.Mid(8,3))*256+atoi(strEndIP.Mid(12,3)); 
		////////////////////////////////////////// 
		char cLocal[sizeof(stIPAddressSegmentOfFile.cLocal)]; 
		ZeroMemory(cLocal,sizeof(cLocal)); 
 
		int nCount=0; 
		for(int i=0;idwStartIP<=dwIPAddress && pstIPAddressSegmentOfList->dwEndIP>=dwIPAddress) 
		{ 
			DWORD dwIPAddressRange=pstIPAddressSegmentOfList->dwEndIP-pstIPAddressSegmentOfList->dwStartIP; 
			if(dwIPAddressRange<=dwMixIPAddressRange) 
			{ 
				dwMixIPAddressRange=dwIPAddressRange; 
				strLocal=pstIPAddressSegmentOfList->strLocal; 
			} 
		} 
	} 
	return strLocal; 
}