Mega Code Archive
Get the MAC Address
<![CDATA[
Title: get the MAC Address?
uses NB30;
function GetMACAdress: string;
var
NCB: PNCB;
Adapter: PAdapterStatus;
URetCode: PChar;
RetCode: char;
I: integer;
Lenum: PlanaEnum;
_SystemID: string;
TMPSTR: string;
begin
Result := '';
_SystemID := '';
Getmem(NCB, SizeOf(TNCB));
Fillchar(NCB^, SizeOf(TNCB), 0);
Getmem(Lenum, SizeOf(TLanaEnum));
Fillchar(Lenum^, SizeOf(TLanaEnum), 0);
Getmem(Adapter, SizeOf(TAdapterStatus));
Fillchar(Adapter^, SizeOf(TAdapterStatus), 0);
Lenum.Length := chr(0);
NCB.ncb_command := chr(NCBENUM);
NCB.ncb_buffer := Pointer(Lenum);
NCB.ncb_length := SizeOf(Lenum);
RetCode := Netbios(NCB);
i := 0;
repeat
Fillchar(NCB^, SizeOf(TNCB), 0);
Ncb.ncb_command := chr(NCBRESET);
Ncb.ncb_lana_num := lenum.lana[I];
RetCode := Netbios(Ncb);
Fillchar(NCB^, SizeOf(TNCB), 0);
Ncb.ncb_command := chr(NCBASTAT);
Ncb.ncb_lana_num := lenum.lana[I];
// Must be 16
Ncb.ncb_callname := '* ';
Ncb.ncb_buffer := Pointer(Adapter);
Ncb.ncb_length := SizeOf(TAdapterStatus);
RetCode := Netbios(Ncb);
//---- calc _systemId from mac-address[2-5] XOR mac-address[1]...
if (RetCode = chr(0)) or (RetCode = chr(6)) then
begin
_SystemId := IntToHex(Ord(Adapter.adapter_address[0]), 2) + '-' +
IntToHex(Ord(Adapter.adapter_address[1]), 2) + '-' +
IntToHex(Ord(Adapter.adapter_address[2]), 2) + '-' +
IntToHex(Ord(Adapter.adapter_address[3]), 2) + '-' +
IntToHex(Ord(Adapter.adapter_address[4]), 2) + '-' +
IntToHex(Ord(Adapter.adapter_address[5]), 2);
end;
Inc(i);
until (I = Ord(Lenum.Length)) or (_SystemID '00-00-00-00-00-00');
FreeMem(NCB);
FreeMem(Adapter);
FreeMem(Lenum);
GetMacAdress := _SystemID;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
label1.Caption := GetMACAdress;
end;
//***************************************************
// Another Code from
// http://delphi.vitpc.com/treasury/lan.htm
//***************************************************
uses
NB30;
type
TAdapterStatus = record
adapter_address: array [0..5] of char;
filler: array [1..4 * SizeOf(char) + 19 * SizeOf(Word) + 3 * SizeOf(DWORD)] of
Byte;
end;
THostInfo = record
username: PWideChar;
logon_domain: PWideChar;
oth_domains: PWideChar;
logon_server: PWideChar;
end;{record}
function IsNetConnect: Boolean;
begin
if GetSystemMetrics(SM_NETWORK) and $01 = $01 then Result := True
else
Result := False;
end;{function}
function AdapterToString(Adapter: TAdapterStatus): string;
begin
with Adapter do Result :=
Format('%2.2x-%2.2x-%2.2x-%2.2x-%2.2x-%2.2x',
[Integer(adapter_address[0]), Integer(adapter_address[1]),
Integer(adapter_address[2]), Integer(adapter_address[3]),
Integer(adapter_address[4]), Integer(adapter_address[5])]);
end;{function}
function GetMacAddresses(const Machine: string;
const Addresses: TStrings): Integer;
const
NCBNAMSZ = 16; // absolute length of a net name
MAX_LANA = 254; // lana's in range 0 to MAX_LANA inclusive
NRC_GOODRET = $00; // good return
NCBASTAT = $33; // NCB ADAPTER STATUS
NCBRESET = $32; // NCB RESET
NCBENUM = $37; // NCB ENUMERATE LANA NUMBERS
type
PNCB = ^TNCB;
TNCBPostProc = procedure(P: PNCB);
stdcall;
TNCB = record
ncb_command: Byte;
ncb_retcode: Byte;
ncb_lsn: Byte;
ncb_num: Byte;
ncb_buffer: PChar;
ncb_length: Word;
ncb_callname: array [0..NCBNAMSZ - 1] of char;
ncb_name: array [0..NCBNAMSZ - 1] of char;
ncb_rto: Byte;
ncb_sto: Byte;
ncb_post: TNCBPostProc;
ncb_lana_num: Byte;
ncb_cmd_cplt: Byte;
ncb_reserve: array [0..9] of char;
ncb_event: THandle;
end;
PLanaEnum = ^TLanaEnum;
TLanaEnum = record
Length: Byte;
lana: array [0..MAX_LANA] of Byte;
end;
ASTAT = record
adapt: TAdapterStatus;
namebuf: array [0..29] of TNameBuffer;
end;
var
NCB: TNCB;
Enum: TLanaEnum;
I: integer;
Adapter: ASTAT;
MachineName: string;
begin
Result := -1;
Addresses.Clear;
MachineName := UpperCase(Machine);
if MachineName = '' then MachineName := '*';
FillChar(NCB, SizeOf(NCB), #0);
NCB.ncb_command := NCBENUM;
NCB.ncb_buffer := Pointer(@Enum);
NCB.ncb_length := SizeOf(Enum);
if Word(NetBios(@NCB)) = NRC_GOODRET then
begin
Result := Enum.Length;
for I := 0 to Ord(Enum.Length) - 1 do
begin
FillChar(NCB, SizeOf(TNCB), #0);
NCB.ncb_command := NCBRESET;
NCB.ncb_lana_num := Enum.lana[I];
if Word(NetBios(@NCB)) = NRC_GOODRET then
begin
FillChar(NCB, SizeOf(TNCB), #0);
NCB.ncb_command := NCBASTAT;
NCB.ncb_lana_num := Enum.lana[i];
StrLCopy(NCB.ncb_callname, PChar(MachineName), NCBNAMSZ);
StrPCopy(@NCB.ncb_callname[Length(MachineName)],
StringOfChar(' ', NCBNAMSZ - Length(MachineName)));
NCB.ncb_buffer := PChar(@Adapter);
NCB.ncb_length := SizeOf(Adapter);
if Word(NetBios(@NCB)) = NRC_GOODRET then
Addresses.Add(AdapterToString(Adapter.adapt));
end;
end;
end;
end;{function}
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