Delphi Mac Adres Öğrenme

Bilgisayarda ilk ethernet bağdaştırıcısının mac adresini döndürür bağdaştırıcı yoksa veya hata durumunda boş dize gönderir

unit unit1;

interface

uses
  SysUtils, Windows, Nb30;

function GetMacAddress: string;

implementation

function GetMacAddress: string;
type
  // This type is defined in MSDN sample code, but tests have found this is
  // not needed (on XP Pro) and Adapter can be of type TAdapterStatus. This
  // method use the type in case other OSs require it
  TAStat = packed record
    Adapt: Nb30.TAdapterStatus;
    NameBuff: array[0..29] of Nb30.TNameBuffer;
  end;
var
  Adapter: TAStat;              // info about a network adapter
  AdapterList: Nb30.TLanaEnum;  // numbers for current LAN adapters
  Ncb: Nb30.TNCB;               // network control block descriptor
  I: Integer;                   // loops thru all adapters in list
  // ---------------------------------------------------------------------------
  function NetBiosSucceeded(const RetCode: AnsiChar): Boolean;
  begin
    // Check RetCode is good NetBios function return value
    Result := Windows.UCHAR(RetCode) = Nb30.NRC_GOODRET;
  end;
  // ---------------------------------------------------------------------------
begin
  // Assume not adapter
  Result := '';
  // Get list of adapters
  FillChar(Ncb, SizeOf(Ncb), 0);
  Ncb.ncb_command := AnsiChar(Nb30.NCBENUM);
  Ncb.ncb_buffer := PAnsiChar(@AdapterList);
  Ncb.ncb_length := SizeOf(AdapterList);
  if not NetBiosSucceeded(Nb30.Netbios(@Ncb)) then
    Exit;
  // Get status of each adapter, exiting when first valid one reached
  // MSDN cautions us not to assume lana[0] is valid
  for I := 0 to Pred(Integer(AdapterList.length)) do
  begin
    // reset the adapter
    FillChar(Ncb, SizeOf(Ncb), 0);
    Ncb.ncb_command := AnsiChar(Nb30.NCBRESET);
    Ncb.ncb_lana_num := AdapterList.lana[I];
    if not NetBiosSucceeded(Nb30.Netbios(@Ncb)) then
      Exit;
    // get status of adapter
    FillChar(Ncb, SizeOf(Ncb), 0);
    Ncb.ncb_command := AnsiChar(Nb30.NCBASTAT);
    Ncb.ncb_lana_num := AdapterList.lana[I];
    Ncb.ncb_callname := '*               ';
    Ncb.ncb_buffer := PAnsiChar(@Adapter);
    Ncb.ncb_length := SizeOf(Adapter);
    if NetBiosSucceeded(Nb30.Netbios(@Ncb)) then
    begin
      // we have a MAC address: return it
      with Adapter.Adapt do
        Result := SysUtils.Format(
          '%.2x-%.2x-%.2x-%.2x-%.2x-%.2x',
          [
            Ord(adapter_address[0]),
            Ord(adapter_address[1]),
            Ord(adapter_address[2]),
            Ord(adapter_address[3]),
            Ord(adapter_address[4]),
            Ord(adapter_address[5])
          ]
        );
      Exit;
    end;
  end;
end;

end.