Get MAC Address

GetMacAddress

Include nb30.h and link with netapi32.lib. This article is based on Q118623.

Source

typedef struct _ASTAT_
{
	ADAPTER_STATUS adapt;
	NAME_BUFFER    NameBuff[30];
} ASTAT, * PASTAT;


CString GetMacAddress(CString sNetBiosName)
{
    ASTAT Adapter;
	
    NCB ncb;
    UCHAR uRetCode;
	
    memset(&ncb, 0, sizeof(ncb));
    ncb.ncb_command = NCBRESET;
    ncb.ncb_lana_num = 0;
	
    uRetCode = Netbios(&ncb);
	
    memset(&ncb, 0, sizeof(ncb));
    ncb.ncb_command = NCBASTAT;
    ncb.ncb_lana_num = 0;
	
    sNetBiosName.MakeUpper();
	
    FillMemory(ncb.ncb_callname, NCBNAMSZ - 1, 0x20);
	
    strcpy((char *)ncb.ncb_callname, (LPCTSTR) sNetBiosName);
	
    ncb.ncb_callname[sNetBiosName.GetLength()] = 0x20;
    ncb.ncb_callname[NCBNAMSZ] = 0x0;
	
    ncb.ncb_buffer = (unsigned char *) &Adapter;
    ncb.ncb_length = sizeof(Adapter);
	
    uRetCode = Netbios(&ncb);
    
    CString sMacAddress;
	
    if (uRetCode == 0)
    {
    	sMacAddress.Format(_T("%02x%02x%02x%02x%02x%02x"),
    	    Adapter.adapt.adapter_address[0],
            Adapter.adapt.adapter_address[1],
            Adapter.adapt.adapter_address[2],
            Adapter.adapt.adapter_address[3],
            Adapter.adapt.adapter_address[4],
            Adapter.adapt.adapter_address[5]);
    }
    return sMacAddress;
}