unit Main;
interface
uses
SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,
Forms, Dialogs, StdCtrls,
Nb, ExtCtrls;
type
TForm1 = class(TForm)
Panel1: TPanel;
Memo1: TMemo;
Panel2: TPanel;
Button1: TButton;
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
{---------------------------------------------}
{ enumerate the lana's - works only on WIN32 }
{---------------------------------------------}
function NbLanaEnum: TLana_Enum;
var
NCB: TNCB;
L_Enum: TLana_Enum;
RetCode: Word;
begin
{$IFDEF WIN32}
FillChar(NCB, SizeOf(NCB), 0);
FillChar(L_Enum, SizeOf(TLana_Enum), 0);
NCB.Command := NCB_ENUM;
NCB.Buf := @L_Enum;
NCB.Length := Sizeof(L_Enum);
RetCode := NetBiosCmd(NCB);
if RetCode <> NRC_GOODRET then begin
L_Enum.Length := 0;
L_Enum.Lana[0] := Byte(RetCode);
end;
{$ELSE} { not supported for WIN16, fake LANA 0 }
L_Enum.Length := 1;
L_Enum.Lana[0] := 0;
{$ENDIF}
Result := L_Enum;
end;
{----------------------------------------}
{ Reset the lana - don't for WIN16 ! }
{----------------------------------------}
function NbReset(l: Byte): Word;
var
NCB: TNCB;
begin
{$IFNDEF WIN32} { will reset all your connections for WIN1
6 }
Result := NRC_GOODRET; { so just fake a reset for Win16
}
{$ELSE}
FillChar(NCB, SizeOf(NCB), 0);
NCB.Command := NCB_RESET;
NCB.Lana_Num := l;
Result := NetBiosCmd(NCB);
{$ENDIF}
end;
{----------------------------------------}
{ return the MAC address of an interface }
{ in the form of a string like : }
{ 'xx:xx:xx:xx:xx:xx' }
{ using the definitions in nb.pas }
{----------------------------------------}
function NbGetMacAddr(LanaNum: Integer): String;
var
NCB: TNCB;
AdpStat: TAdpStat;
RetCode: Word;
begin
FillChar(NCB, SizeOf(NCB), 0);
FillChar(AdpStat, SizeOf(AdpStat), 0);
NCB.Command := NCB_ADPSTAT;
NCB.Buf := @AdpStat;
NCB.Length := Sizeof(AdpStat);
FillChar(NCB.CallName, Sizeof(TNBName), $20);
NCB.CallName[0] := Byte('*');
NCB.Lana_Num := LanaNum;
RetCode := NetBiosCmd(NCB);
if RetCode = NRC_GOODRET then begin
Result := Format('%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x',
[AdpStat.ID[0],
AdpStat.ID[1],
AdpStat.ID[2],
AdpStat.ID[3],
AdpStat.ID[4],
AdpStat.ID[5]
]);
end else begin
Result := '??:??:??:??:??:??';
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
Close;
end;
procedure TForm1.FormCreate(Sender: TObject);
var
L_Enum : TLana_Enum;
RetCode: Word;
i: Integer;
begin
L_Enum := NbLanaEnum; { enumerate lanas for WI
N NT }
if L_Enum.Length = 0 then begin
Button1.Caption := Format('LanaEnum err=%2.2x', [L_Enum.Lana[0]]);
exit;
end;
for i := 0 to (L_Enum.Length - 1)do begin { for every lana found
}
RetCode := NbReset(L_Enum.Lana[i]); { Reset lana for WIN NT
}
if RetCode <> NRC_GOODRET then begin
Button1.Caption := Format('Reset Lana %d err=%2.2x',[i, RetCode
]);
exit;
end;
{ Get MAC Address
}
Memo1.Lines.Add(Format('Lana %x = %s', [L_Enum.Lana[i], NbGetMacAd
dr(i)]));
end;
Button1.Caption := 'Stop';
end;
end.
——————————————————————————————————-
unit Nb;
{$F+}
{ nb.pas
16/32 bit windows netbios access (follows IBM's Netbios 3.0 spec)
(C) CEVI VZW - 29 april 1998 -- DH (Danny.Heijl@cevi.be) --
You can (ab)use this code as you like, but please do not remove the
credits.
I used reference material from IBM, Microsoft, Syntax and Byte when
I wrote
the 16-bit (DOS) c-version ages ago (in Borland Turbo C 2.0 on a 38
6SX PC)
with a Syntax SMB server running on Interactive Unix.
I now converted this to 16 and 32 bit Delphi code.
}
interface
uses SysUtils, Winprocs, Wintypes;
const
{ size of a netbios name }
NBNAMESIZE = 16;
{ max number of network adapters }
{ remeber it's BIG Blue, right ? }
MAXLANAS = 254;
{ NCB Command codes }
NCB_ASYNC = $80; { asynch command bit to be or-ed into command
}
NCB_CALL = $10; { open a session }
NCB_LISTEN = $11; { wait for a call }
NCB_HANGUP = $12; { end session }
NCB_SEND = $14; { send data }
NCB_RECV = $15; { receive data }
NCB_RECVANY = $16; { receive data on any session }
NCB_CHAINSEND = $17; { chain send data }
NCB_DGSEND = $20; { send a datagram }
NCB_DGRECV = $21; { receive datagram }
NCB_DGSENDBC = $22; { send broadcast datagram }
NCB_DGREVCBC = $23; { receive broadcast datagram }
NCB_ADDNAME = $30; { add unique name to local table }
NCB_DELNAME = $31; { delete name from local table }
NCB_RESET = $32; { reset adapter }
NCB_ADPSTAT = $33; { adapter status }
NCB_SSTAT = $34; { session status }
NCB_CANCEL = $35; { cancel NCB request }
NCB_ADDGRPNAME= $36; { add group name to local table }
NCB_ENUM = $37; { enum adapters }
NCB_UNLINK = $70; { unlink remote boot code }
NCB_SENDNA = $71; { send, don't wait for ACK }
NCB_CHAINSENDNA=$72; { chain send, but don't wait for ACK }
NCB_LANSTALERT= $73; { lan status alert }
NCB_ACTION = $77; { enable extensions }
NCB_FINDNAME = $78; { search for name on the network }
NCB_TRACE = $79; { activate / stop tracing }
{ NCB return codes }
NRC_GOODRET = $00; { good return
also returned when ASYNCH request accept
ed }
NRC_BUFLEN = $01; { illegal buffer length
}
NRC_ILLCMD = $03; { illegal command
}
NRC_CMDTMO = $05; { command timed out
}
NRC_INCOMP = $06; { message incomplete, issue another comman
d }
NRC_BADDR = $07; { illegal buffer address
}
NRC_SNUMOUT = $08; { session number out of range
}
NRC_NORES = $09; { no resource available
}
NRC_SCLOSED = $0a; { session closed
}
NRC_CMDCAN = $0b; { command cancelled
}
NRC_DUPNAME = $0d; { duplicate name
}
NRC_NAMTFUL = $0e; { name table full
}
NRC_ACTSES = $0f; { no deletions, name has active sessions
}
NRC_LOCTFUL = $11; { local session table full
}
NRC_REMTFUL = $12; { remote session table full
}
NRC_ILLNN = $13; { illegal name number
}
NRC_NOCALL = $14; { no callname
}
NRC_NOWILD = $15; { cannot put * in NCB_NAME
}
NRC_INUSE = $16; { name in use on remote adapter
}
NRC_NAMERR = $17; { name deleted
}
NRC_SABORT = $18; { session ended abnormally
}
NRC_NAMCONF = $19; { name conflict detected
}
NRC_IFBUSY = $21; { interface busy, IRET before retrying
}
NRC_TOOMANY = $22; { too many commands outstanding, retry lat
er }
NRC_BRIDGE = $23; { ncb_lana_num field invalid
}
NRC_CANOCCR = $24; { command completed while cancel occurring
}
NRC_CANCEL = $26; { command not valid to cancel
}
NRC_DUPENV = $30; { name defined by anther local process
}
NRC_ENVNOTDEF = $34; { environment undefined. RESET required
}
NRC_OSRESNOTAV = $35; { required OS resources exhausted
}
NRC_MAXAPPS = $36; { max number of applications exceeded
}
NRC_NOSAPS = $37; { no saps available for netbios
}
NRC_NORESOURCES = $38; { requested resources are not available
}
NRC_INVADDRESS = $39; { invalid ncb address or length > segment
}
NRC_INVDDID = $3B; { invalid NCB DDID
}
NRC_LOCKFAIL = $3C; { lock of user area failed
}
NRC_OPENERR = $3f; { NETBIOS not loaded
}
NRC_SYSTEM = $40; { system error
}
NRC_PENDING = $ff; { asynchronous command is not yet finished
}
{ Values for transport_id }
ALL_TRANSPORTS = 'M'#$00#$00#$00;
MS_NBF = 'MNBF';
{ values for name_flags bits. }
NAME_FLAGS_MASK = $87;
GROUP_NAME = $80;
UNIQUE_NAME = $00;
REGISTERING = $00;
REGISTERED = $04;
DEREGISTERED = $05;
DUPLICATE = $06;
DUPLICATE_DEREG = $07;
{ Values for state }
LISTEN_OUTSTANDING = $01;
CALL_PENDING = $02;
SESSION_ESTABLISHED = $03;
HANGUP_PENDING = $04;
HANGUP_COMPLETE = $05;
SESSION_ABORTED = $06;
type
{ Netbios Name }
TNBName = array[0..(NBNAMESIZE - 1)] of byte;
{ MAC address }
TMacAddress = array[0..5] of byte;
PNCB = ^TNCB;
{ Netbios Control Block }
{$IFDEF WIN32}
TNCBPostProc = procedure(P: PNCB);
{$ENDIF}
TNCB = packed record { Netbios Control Block }
Command: byte; { command code }
RetCode: byte; { return code }
LSN: byte; { local session number }
Num: byte; { name number }
Buf: ^byte; { data buffer }
Length: word; { data length }
CallName: TNBName; { name to call }
Name: TNBName; { our own name }
RTO: byte; { receive time-out }
STO: byte; { send time-out }
{$IFNDEF WIN32}
Post_Offs:word; { asynch notification routine offset }
Post_Seg: word; { asynch notification routine segment}
{$ELSE}
PostPrc: TNCBPostProc;{ asynch notification routine (nb30) }
{$ENDIF}
Lana_Num: byte; { adapter number }
Cmd_Cplt: byte; { command completion flag }
{$IFDEF WIN32}
Reserved: array[0..9] of byte; { Reserverd for Bios use }
Event: THandle; { WIN32 event handle to be signalled }
{ for asynch cmd completion }
{$ELSE}
Reserved: array[0..13] of byte; { Reserved }
{$ENDIF}
end;
{ Netbios Name Info record }
PNameInfo = ^TNameInfo;
TNameInfo = packed record { name info record }
Name: TNBName; { netbios name }
NameNum:byte; { name number }
NameSt: byte; { name status }
end;
{ Netbios adapter status }
PAdpStat = ^TAdpStat;
TAdpStat = packed record { adapter status record}
ID: TMacAddress; { adapter mac address }
VMajor: byte; { software version major number }
Resvd0: byte;
AdpType: byte; { adapter type }
VMinor: byte; { software version minor number }
RptTime: word; { reporting time period }
RcvCRC: word; { receive crc errors }
RcvOth: word; { receive other errors }
TxmCol: word; { transmit collisions }
TxmOth: word; { transmit other errors }
TxmOK: LongInt; { successfull transmissions }
RcvOK: LongInt; { successfull receives }
TxmRetr: word; { transmit retries }
NoRcvBuf: word; { number of 'no receive buffer' }
T1_tmo: word; { t1 time-outs }
Ti_tmo: word; { ti time_outs }
Resvd1: LongInt;
Free_Ncbs:word; { number of free ncb's }
Cfg_Ncbs: word; { number of configured ncb's }
max_Ncbs: word; { max ncb's used }
NoTxmBuf: word; { number of 'no transmit buffer'}
MaxDGSize:word; { max. datagram size }
Pend_Ses: word; { number of pending sessions }
Cfg_Ses: word; { number of configured sessions }
Max_Ses: word; { max sessions used }
Max_SPSz: word; { max. session packet size }
nNames: word; { number of names in local table}
Names: array[0..15] of TnameInfo; { local name table }
end;
{
Structure returned to the NCB command NCBSSTAT is SESSION_HEADER fo
llowed
by an array of SESSION_BUFFER structures. If the NCB_NAME starts wi
th an
asterisk then an array of these structures is returned containing t
he
status for all names.
}
{ session header }
PSession_Header = ^TSession_Header;
TSession_Header = packed record
sess_name: byte;
num_sess: byte;
rcv_dg_outstanding: byte;
rcv_any_outstanding: byte;
end;
{ session buffer }
PSession_Buffer = ^TSession_Buffer;
TSession_Buffer = packed record
lsn: byte;
state: byte;
local_name: TNBName;
remote_name: TNBName;
rcvs_outstanding: byte;
sends_outstanding: byte;
end;
{
Structure returned to the NCB command NCBENUM.
On a system containing lana's 0, 2 and 3, a structure with
length =3, lana[0]=0, lana[1]=2 and lana[2]=3 will be returned.
}
PLana_Enum = ^TLana_Enum;
TLANA_ENUM = packed record
length: byte; { Number of valid entries in lana[] }
lana: array[0..(MAXLANAS - 1)] of byte;
end;
{
Structure returned to the NCB command NCBFINDNAME is FIND_NAME_HEAD
ER followed
by an array of FIND_NAME_BUFFER structures.
}
PFind_Name_Header = ^TFind_Name_Header;
TFind_Name_Header = packed record
node_count: word;
reserved: byte;
unique_group: byte;
end;
PFind_Name_Buffer = ^TFind_Name_Buffer;
TFind_Name_Buffer = packed record
length: byte;
access_control: byte;
frame_control: byte;
destination_addr:TMacAddress;
source_addr: TMacAddress;
routing_info: array[0..17] of byte;
end;
{
Structure provided with NCBACTION. The purpose of NCBACTION is to p
rovide
transport specific extensions to netbios.
}
PAction_Header = ^TAction_Header;
TAction_Header = packed record
transport_id: LongInt;
action_code: Word;
reserved: Word;
end;
{$IFDEF WIN32}
function Netbios(P: PNCB): Char; stdcall;
{$ENDIF}
{ Exposed functions }
function NetbiosCmd(var NCB: TNCB): Word;
implementation
{$IFDEF WIN32}
function Netbios; external 'netapi32.dll' name 'Netbios';
{$ENDIF}
{---------------------------------}
{ execute a Windows Netbios Call }
{---------------------------------}
function NetbiosCmd(var NCB: TNCB): Word;
begin
{$IFNDEF WIN32}
asm
push bp { save bp }
push ss { save ss }
push ds { save ds }
les bx, NCB { get segment/offset address of NCB }
call NetBiosCall; { 16 bit Windows Netbios call }
xor ah,ah
mov @Result, ax { store return code }
pop ds { restore ds }
pop ss { restore ss }
pop bp { restore bp }
end;
{$ELSE}
Result := Word(Netbios(PNCB(@NCB))); { 32 bit Windows Netbios call }
{$ENDIF}
end;