知道ip地址如何得到对方mac地址？谢谢（要源代码）(200分)

谢谢

function SendARP(DestIP: ipAddr; SrcIP: ipAddr; pMacAddr: puLong;
PhyAddrLen: puLong): DWORD; stdCall; external 'IPHLPAPI.DLL'

function GetMacByIP(const IPAddress: WideString): String;
var
DestIP: Integer;
pMacAddr: puLong;
AddrLen: u_Long;
MacAddr: array [1..6] of byte;
p: PByte;
s: String;
i: Integer;
IPStr: String;
begin
IPStr := IPAddress;
DestIP := iNet_Addr(PChar(IPStr));
pMacAddr := puLong(@MacAddr);
AddrLen := SizeOf(MacAddr);
if SendARP(DestIP, 0, pMacAddr, @AddrLen) = 0 then
begin
s:='';
p:=PByte(pMacAddr);
if (p<>nil) and (AddrLen>0) then
begin
for i:=1 to AddrLen do
begin
s:=s+IntToHex(p^,2);
p:=Pointer(Integer(p)+SizeOf(Byte));
end;
SetLength(s,12);
end;
end;
Result:=s;
end;

这样可以吗？？关注。。。。

nbtstat -A 123.123.123.123

本地连接:
Node IpAddress: [123.123.123.123] Scope Id: []

NetBIOS Remote Machine Name Table

Name Type Status
---------------------------------------------
MAC Address = 00-F0-EC-WB-85-Q0

http://www.delphibbs.com/delphibbs/dispq.asp?lid=1158914 改改即可

Win2k下可以用SendArp()，如pihome所写。
或者用Nbtstat：http://zw84611.51.net/NBTSTAT.zip

nbtstat 可以，来晚了帮你UP

//用NetBios实现此技术的控件
unit WinInfo;

{$F+}

interface

uses
SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls, Forms,
Dialogs,Registry,DsgnIntf;

const
DBRoot = HKEY_LOCAL_MACHINE;
NBNAMESIZE = 16;
MAXLANAS = 254;
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 }
NRC_GOODRET = $00; { good return
NRC_BUFLEN = $01; { illegal buffer length }
NRC_ILLCMD = $03; { illegal command }
NRC_CMDTMO = $05; { command timed out }
NRC_INCOMP = $06; { message incomplete, issue another command }
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 later }
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 }
ALL_TRANSPORTS = 'M'#$00#$00#$00;
MS_NBF = 'MNBF';
NAME_FLAGS_MASK = $87;
GROUP_NAME = $80;
UNIQUE_NAME = $00;

REGISTERING = $00;
REGISTERED = $04;
DEREGISTERED = $05;
DUPLICATE = $06;
DUPLICATE_DEREG = $07;

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 followed
by an array of SESSION_BUFFER structures. If the NCB_NAME starts with an
asterisk then an array of these structures is returned containing the
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_HEADER 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 provide
transport specific extensions to netbios.
}

PAction_Header = ^TAction_Header;
TAction_Header = packed record
transport_id: LongInt;
action_code: Word;
reserved: Word;
end;
TWinInfo = class(TComponent)

private
FMacAdress,FBiosName,FBiosVer,FBiosDate : string;
FWorkgroup,FComputerName,FComment,FProductId,FProductKey : string;
FRegisteredOwner,FRegisteredOrganization,FSystemRoot : string;
FProgramFilesDir,FBootCount,FCommonFilesDir,FConfigPath : string;
FDevicePath,FMediaPath,FOtherDevicePath,FPF_AccessoriesName : string;
FProductName,FProductType,FProgramFilesPath,FSM_AccessoriesName : string;
FVersion,FVersionNumber,FWallPaperDir : string;
public
constructor Create(AOwner: TComponent); override;
function ReLoad: Boolean;

published
property MacAdress: string read FMacAdress write FMacAdress;
property BiosDate: string read FBiosDate write FBiosDate;
property BiosName: string read FBiosName write FBiosName;
property BiosVer: string read FBiosVer write FBiosVer;
property Workgroup: string read FWorkgroup write FWorkgroup;
property ComputerName: string read FComputerName write FComputerName;
property Comment: string read FComment write FComment;
property ProductId: string read FProductId write FProductId;
property ProductKey: string read FProductKey write FProductKey;

property WallPaperDir: string read FWallPaperDir write FWallPaperDir;
property VersionNumber: string read FVersionNumber write FVersionNumber;
property Version: string read FVersion write FVersion;
property SM_AccessoriesName: string read FSM_AccessoriesName write FSM_AccessoriesName;
property ProgramFilesPath: string read FProgramFilesPath write FProgramFilesPath;
property ProductType: string read FProductType write FProductType;
property ProductName: string read FProductName write FProductName;
property PF_AccessoriesName: string read FPF_AccessoriesName write FPF_AccessoriesName;
property OtherDevicePath: string read FOtherDevicePath write FOtherDevicePath;
property MediaPath: string read FMediaPath write FMediaPath;
property DevicePath: string read FDevicePath write FDevicePath;
property ConfigPath: string read FConfigPath write FConfigPath;
property CommonFilesDir: string read FCommonFilesDir write FCommonFilesDir;
property BootCount: string read FBootCount write FBootCount;
property ProgramFilesDir: string read FProgramFilesDir write FProgramFilesDir;
property SystemRoot: string read FSystemRoot write FSystemRoot;
property RegisteredOrganization: string read FRegisteredOrganization write FRegisteredOrganization;
property RegisteredOwner: string read FRegisteredOwner write FRegisteredOwner;

end;


{$IFDEF WIN32}
function Netbios(P: PNCB): Char; stdcall;
{$ENDIF}

function NetbiosCmd(var NCB: TNCB): Word;

var
BRegistry: TRegistry;

procedure Register;

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;

{---------------------------------------------}
{ 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
{$IFNDEF WIN32} { will reset all your connections for WIN16 }
Result := NRC_GOODRET; { so just fake a reset for Win16 }
{$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;

function TWinInfo.ReLoad: Boolean;
begin
BRegistry := TRegistry.Create;
BRegistry.RootKey := DBRoot;
BRegistry.LazyWrite := false;
BRegistry.OpenKey('Enum/Root/*PNP0C01/0000', False);
BiosDate := BRegistry.ReadString('BIOSDate');
BiosName := BRegistry.ReadString('BIOSName');
BiosVer := BRegistry.ReadString('BIOSVersion');

BRegistry.CloseKey;

BRegistry.OpenKey('System/CurrentControlSet/Services/VxD/VNETSUP', False);
Workgroup := BRegistry.ReadString('Workgroup');
ComputerName := BRegistry.ReadString('ComputerName');
Comment := BRegistry.ReadString('Comment');
BRegistry.CloseKey;


BRegistry.OpenKey('SOFTWARE/Microsoft/Windows/CurrentVersion', False);
ProductId := BRegistry.ReadString('ProductId');
ProductKey := BRegistry.ReadString('ProductKey');

RegisteredOwner := BRegistry.ReadString('RegisteredOwner');
RegisteredOrganization := BRegistry.ReadString('RegisteredOrganization');
SystemRoot := BRegistry.ReadString('SystemRoot');
ProgramFilesDir := BRegistry.ReadString('ProgramFilesDir');
BootCount := BRegistry.ReadString('BootCount');
CommonFilesDir := BRegistry.ReadString('CommonFilesDir');
ConfigPath := BRegistry.ReadString('ConfigPath');
DevicePath := BRegistry.ReadString('DevicePath');
MediaPath := BRegistry.ReadString('MediaPath');
OtherDevicePath := BRegistry.ReadString('OtherDevicePath');
PF_AccessoriesName := BRegistry.ReadString('PF_AccessoriesName');
ProductName := BRegistry.ReadString('ProductName');
ProductType := BRegistry.ReadString('ProductType');
ProgramFilesPath := BRegistry.ReadString('ProgramFilesPath');
SM_AccessoriesName := BRegistry.ReadString('SM_AccessoriesName');
Version := BRegistry.ReadString('Version');
VersionNumber := BRegistry.ReadString('VersionNumber');
WallPaperDir := BRegistry.ReadString('WallPaperDir');

BRegistry.CloseKey;
BRegistry.Free;
end;

constructor TWinInfo.Create;
var
L_Enum : TLana_Enum;
RetCode: Word;
i: Integer;
begin
inherited;
ReLoad;
L_Enum := NbLanaEnum; { enumerate lanas for WIN NT }
if L_Enum.Length = 0 then begin
MacAdress := '';
exit;
end;

for i := 0 to (L_Enum.Length - 1)do begin { for every lana found }

RetCode := NbReset(L_Enum.Lana); { Reset lana for WIN NT }
if RetCode <> NRC_GOODRET then begin
MacAdress := '';
exit;
end;
{ Get MAC Address }
MacAdress := NbGetMacAddr(i);

end;
end;


procedure Register;
begin
RegisterComponents('Samples', [TWinInfo]);
end;

end.

http://www.delphibbs.com/delphibbs/dispq.asp?lid=1383771