Question

I have the following the functions:

This function will get every IP Addresses from the local machine

void GetIP()
{
WORD wVersionRequested;
WSADATA wsaData;
char name[ 255 ];
PHOSTENT hostinfo;
wVersionRequested = MAKEWORD( 1, 1 );
char *ip;

if ( WSAStartup( wVersionRequested, &wsaData ) == 0 )
{
    if( gethostname ( name, sizeof( name ) ) == 0 )
    {
        if ( ( hostinfo = gethostbyname( name ) ) != NULL )
        {
            int nCount = 0;
            while ( hostinfo->h_addr_list[ nCount ] )
            {
                ip = inet_ntoa( *(struct in_addr *)hostinfo->h_addr_list[ nCount ] );

                //printf( "IP #%d: %s\n", ++nCount, ip );
                printf( "IP                 : %s\n", ip );
                ++nCount;
            }
        }
    }
}
}//GetIP

And here is my second function, which will get every MAC Address from the local machine:

void GetMACaddress()
{
IP_ADAPTER_INFO AdapterInfo[ 16 ];              // Allocate information for up to 16 NICs
DWORD dwBufLen = sizeof( AdapterInfo );         // Save the memory size of buffer

DWORD dwStatus = GetAdaptersInfo(               // Call GetAdapterInfo
                                        AdapterInfo,// [out] buffer to receive data
                                        &dwBufLen   // [in] size of receive data buffer
                                    );  

    assert( dwStatus == ERROR_SUCCESS );            // Verify return value is valid, no buffer overflow

    PIP_ADAPTER_INFO pAdapterInfo = AdapterInfo;    // Contains pointer to current adapter info

    do 
    {
        printf( "MAC                : %02X:%02X:%02X:%02X:%02X:%02X\n", pAdapterInfo->Address[ 0 ], 
                                                                    pAdapterInfo->Address[ 1 ], 
                                                                    pAdapterInfo->Address[ 2 ], 
                                                                    pAdapterInfo->Address[ 3 ], 
                                                                    pAdapterInfo->Address[ 4 ], 
                                                                    pAdapterInfo->Address[ 5 ]  );
                    pAdapterInfo = pAdapterInfo->Next;          // Progress through linked list

    }while( pAdapterInfo );                         // Terminate if last adapter
}//GetMACaddress

So my question is:
How do i know if the queried MAC Address and the queried IP Address belongs to a WiFi?

Thanks!

Answer 1

That code you have for querying MAC addresses, also fetches the interface type.

Starting with Vista, for a WiFi interface, the Type field will be IF_TYPE_IEEE80211 You can also identify dial-up (MIB_IF_TYPE_PPP) connections and loopback (MIB_IF_TYPE_LOOPBACK) virtual interfaces.

As Remy says, you should pull the IP addresses out of that same data structure (there’s an IpAddressList field).