002
27.09.2002, 22:12 Uhr
Uwe
C/C++ Master
(Administrator)
|
Hallo Flo,
nur als Denkanstoß:
| C++: |
void CGetIPDlg::OnButton1()
{
short number = GetNumberOfHostIpAddresses();
/* 2 : in meinem Fall Ethernet - Adapter
1 : DFÜ-Adapter /Modem/ISDN etc.*/
CString strIP = GetHostIPAddressString(1);
}
/* WSADATA wsd;
WSAStartup(0x0101,&wsd);
erfolgt an geeigneter Stelle */
short CGetIPDlg::GetNumberOfHostIpAddresses()
{
char szHostname[200];
HOSTENT *pHostEnt;
short nLoop = 0;
memset(szHostname, 0, 200);
if(gethostname(szHostname, sizeof(szHostname))==SOCKET_ERROR)
return -1;
if(0 == (pHostEnt = gethostbyname(szHostname)))
return -1;
nLoop = 0;
while(pHostEnt->h_addr_list[nLoop] != 0)
nLoop++;
TRACE(_T("CGetIPDlg::GetNumberOfHostIpAddresses(...) Called. IPs = %d\n"), nLoop);
return nLoop;
}
CString CGetIPDlg::GetHostIPAddressString(short sAdapter)
{
TRACE(_T("CGetIPDlg::GetHostIPAddressString(...) called. Adapter = %d\n"), sAdapter);
CString strResult;
char szHostname[200];
char szIPAddr[16];
LPSTR lpszIPAddr;
HOSTENT *pHostEnt;
short nAdapter = sAdapter-1;
struct sockaddr_in sAddr;
memset(szHostname,0,200);
memset(&sAddr, 0, sizeof(struct sockaddr_in));
if(nAdapter < 0){
strResult.Empty();
return strResult;
}
if(gethostname(szHostname, sizeof(szHostname))==SOCKET_ERROR){
strResult.Empty();
return strResult;
}
if(0 == (pHostEnt = gethostbyname(szHostname))){
strResult.Empty();
return strResult;
}
if(pHostEnt->h_addr_list[nAdapter])
memcpy(&sAddr.sin_addr.s_addr,
pHostEnt->h_addr_list[nAdapter],pHostEnt->h_length);
else{
strResult.Empty();
return strResult;
}
lpszIPAddr = inet_ntoa(sAddr.sin_addr);
if(lpszIPAddr){
strcpy((LPSTR)szIPAddr, (LPSTR)lpszIPAddr);
strResult = szIPAddr;
TRACE(_T("CGetIPDlg::GetHostIPAddressString(...) called. IP = %s.\n"), strResult);
return strResult;
}
else{
strResult.Empty();
TRACE(_T("CGetIPDlg::GetHostIPAddressString(...) called. IP = %s.\n"), strResult);
return strResult;
}
}
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--
"Es ist schwierig, ein Programm wirklich idiotensicher zu machen, weil Idioten so genial sind."
Bis dann...
Uwe
Dieser Post wurde am 27.09.2002 um 22:18 Uhr von Uwe editiert. |
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