procedure TForm1.Button3Click(Sender: TObject);
var
GUID:TGUID;
WCLID:array[0..127] of WideChar;
Start:integer;
begin
coCreateGUID(GUID);
StringFromGuid2(GUID,WCLID,SizeOf(WCLID) div 2); edit1.Text:=WideCharToString(WCLID);
start:=Length(edit1.Text)-12;
edit2.Text:=copy(edit1.text,start,12);end;
var
GUID:TGUID;
WCLID:array[0..127] of WideChar;
Start:integer;
begin
coCreateGUID(GUID);
StringFromGuid2(GUID,WCLID,SizeOf(WCLID) div 2); edit1.Text:=WideCharToString(WCLID);
start:=Length(edit1.Text)-12;
edit2.Text:=copy(edit1.text,start,12);end;
解决方案 »
- 请问一下delphi7.0如何实现文字跟随鼠标移动
- 如何让窗口初始最大化
- spcomm读取到ACSCII如何转换成十进制
- 关于indy中的idsnmp控件的使用!
- 求助:问一下很菜的问题。
- 请问各位高手有什么办法可以锁定dxdbgrid的行
- 紧急求助!!为什么用DBGRID连接SQL数据库,编辑带小数的数字时,会自动转变小数的最后一位!!!
- SetForegroundWindow在64位Windows怎么用?
- 在C/S三层结构中,如何定义服务器端的全局变量,来让所有的服务器端使用,用以控制所有服务器端的操作。
- 打印纸张方向设置
- 临时表有什么优点,在什么时候用它?
- 怎样在DBGrid的最后动态的添加一行合计。
难道网卡的MAC地址也会变??
所以我想应该是一样的值呀:)
做好的程序员一如做人。多看多想或许他山之石可以攻玉,但永远不要成为代码的奴隶。 CKER
原著:Borland
Translated by CKER 第一种方法使用Microsoft的Netbios API。 这是一套通过Winsock提供底层网络支持的命令。使用Netbios的最大缺点是您必须在系统中安装了Netbios服务(如果您在windows网络中启用了文件共享的话,这就不是问题了)。除此此外,这种方法又快又准确。 Netbios API只包括了一个函数,就叫做Netbios。这个函数使用网络控制块(network control block)结构作为参数,这个结构告诉函数要做什么。结构的定义如下:
typedef struct _NCB {
UCHAR ncb_command;
UCHAR ncb_retcode;
UCHAR ncb_lsn;
UCHAR ncb_num;
PUCHAR ncb_buffer;
WORD ncb_length;
UCHAR ncb_callname[NCBNAMSZ];
UCHAR ncb_name[NCBNAMSZ];
UCHAR ncb_rto;
UCHAR ncb_sto;
void (CALLBACK *ncb_post) (struct _NCB *);
UCHAR ncb_lana_num;
UCHAR ncb_cmd_cplt;
#ifdef _WIN64
UCHAR ncb_reserve[18];
#else
UCHAR ncb_reserve[10];
#endif
HANDLE ncb_event;
} NCB, *PNCB; 重点在于ncb_command 成员。这个成员告诉Netbios该作什么。我们使用三个命令来探测MAC地址。他们在MSDN的定义如下:
命令描述:
NCBENUM Windows NT/2000: 列举系统中网卡的数量。使用此命令后,ncb_buffer成员指向由LANA_ENUM结构填充的缓冲区。
NCBENUM 不是标准的 NetBIOS 3.0 命令。 NCBRESET 重置网卡。网卡在接受新的NCB命令之前必须重置。
NCBASTAT 接受本地或远程接口卡的状态。使用此命令后,ncb_buffer成员指向由ADAPTER_STATUS结构填充的缓冲区,随后是NAME_BUFFER结构的数组。 下面就是取得您系统MAC地址的步骤:
1》列举所有的接口卡。
2》重置每块卡以取得它的正确信息。
3》查询接口卡,取得MAC地址并生成标准的冒号分隔格式。 下面就是实例源程序。
netbios.cpp #include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <string> using namespace std;
#define bzero(thing,sz) memset(thing,0,sz) bool GetAdapterInfo(int adapter_num, string &mac_addr)
{
// 重置网卡,以便我们可以查询
NCB Ncb;
memset(&Ncb, 0, sizeof(Ncb));
Ncb.ncb_command = NCBRESET;
Ncb.ncb_lana_num = adapter_num;
if (Netbios(&Ncb) != NRC_GOODRET) {
mac_addr = "bad (NCBRESET): ";
mac_addr += string(Ncb.ncb_retcode);
return false;
} // 准备取得接口卡的状态块
bzero(&Ncb,sizeof(Ncb);
Ncb.ncb_command = NCBASTAT;
Ncb.ncb_lana_num = adapter_num;
strcpy((char *) Ncb.ncb_callname, "*");
struct ASTAT
{
ADAPTER_STATUS adapt;
NAME_BUFFER NameBuff[30];
} Adapter;
bzero(&Adapter,sizeof(Adapter));
Ncb.ncb_buffer = (unsigned char *)&Adapter;
Ncb.ncb_length = sizeof(Adapter); // 取得网卡的信息,并且如果网卡正常工作的话,返回标准的冒号分隔格式。
if (Netbios(&Ncb) == 0)
{
char acMAC[18];
sprintf(acMAC, "%02X:%02X:%02X:%02X:%02X:%02X",
int (Adapter.adapt.adapter_address[0]),
int (Adapter.adapt.adapter_address[1]),
int (Adapter.adapt.adapter_address[2]),
int (Adapter.adapt.adapter_address[3]),
int (Adapter.adapt.adapter_address[4]),
int (Adapter.adapt.adapter_address[5]));
mac_addr = acMAC;
return true;
}
else
{
mac_addr = "bad (NCBASTAT): ";
mac_addr += string(Ncb.ncb_retcode);
return false;
}
} int main()
{
// 取得网卡列表
LANA_ENUM AdapterList;
NCB Ncb;
memset(&Ncb, 0, sizeof(NCB));
Ncb.ncb_command = NCBENUM;
Ncb.ncb_buffer = (unsigned char *)&AdapterList;
Ncb.ncb_length = sizeof(AdapterList);
Netbios(&Ncb); // 取得本地以太网卡的地址
string mac_addr;
for (int i = 0; i < AdapterList.length - 1; ++i)
{
if (GetAdapterInfo(AdapterList.lana[i], mac_addr))
{
cout << "Adapter " << int (AdapterList.lana[i]) <<
"“s MAC is " << mac_addr << endl;
}
else
{
cerr << "Failed to get MAC address! Do you" << endl;
cerr << "have the NetBIOS protocol installed?" << endl;
break;
}
} return 0;
}
file://---------------------------------------------------------------------------
NCB:TNCB;
ADAPTER:TADAPTERSTATUS;
LANAENUM:TLANAENUM;
intIdx:integer;
re:char;
buf:string;
begin
try
//Reset adapter
zeromemory(@NCB,SizeOf(NCB));
ncb.ncb_command:=CHR(ncbreset);
NCB.ncb_lana_num :=LANAENUM.lana[0];
re:=NetBios(@NCB);
IF Ord(re)<>0 then
exit; //Get adapter address
ZeroMemory(@NCB,SizeOf(NCB));
NCB.ncb_command:=chr(NCBASTAT);
NCB.ncb_lana_num :=LANAENUM.lana[0];
strPCopy(NCB.ncb_callname,'*');
NCB.ncb_buffer :=@adapter;
NCB.ncb_length :=SizeOf(ADAPTER);
re:=NetBios(@NCB);
IF Ord(re)<>0 then
exit; buf:='';
for intIdx:=0 to 5 do
buf:=buf+InttoHex(integer(ADAPTER.adapter_address[intIdx]),2)+'-';
edit1.Text :=copy(buf,0,length(buf)-1);
finally
end;
end;
我发现用这样取得的才是跟用IPConfig/all命令查到的MAC一致,这是用NetBios来取得的,别忘了引用nb30单元哦
这种方法使用COM API创建一个GUID(全局唯一标识符)并从那里继承MAC地址。GUID通常用来标识COM组件以及系统中的其他对象。它们是由MAC地址(结合其他东西)计算得来的,表面上MAC地址就包含在其中。我说表面上是因为事实上并没有包含。
我提供这种方法更多的是为了作为反面教材。您也许用这种方法能够得到MAC地址,但有时候您只会得到随机的十六进制数值。
下面的例子十分简单,无需多讲。我们使用CoCreateGuid创建GUID,并将最后六个字节放入字符串中。它们可能是MAC地址,但并不是必然的。 uuid.cpp
#include <windows.h>
#include <iostream>
#include <conio.h> using namespace std; int main()
{
cout << "MAC address is: "; // 向COM要求一个UUID。如果机器中有以太网卡,
// UUID最后的六个字节(Data4的2-7字节)应该是本地以太网卡的MAC地址。
GUID uuid;
CoCreateGuid(&uuid);
// Spit the address out
char mac_addr[18];
sprintf(mac_addr,"%02X:%02X:%02X:%02X:%02X:%02X",
uuid.Data4[2],uuid.Data4[3],uuid.Data4[4],
uuid.Data4[5],uuid.Data4[6],uuid.Data4[7]);
cout << mac_addr << endl;
getch();
return 0;
}
我要讨论的第三种方法是使用Windows的SNMP(简单网络管理协议)扩展来取得MAC地址。在我的经验里,这个协议很简单。代码也是直勾勾的向前的。基本步骤和Netbios相同:
1》取得网卡列表
2》查询每块卡的类型和MAC地址
3》保存当前网卡
我个人对SNMP了解不多,但如我刚刚所言,代码十分清楚。 snmp.cpp
#include <snmp.h>
#include <conio.h>
#include <stdio.h> typedef bool(WINAPI * pSnmpExtensionInit) (
IN DWORD dwTimeZeroReference,
OUT HANDLE * hPollForTrapEvent,
OUT AsnObjectIdentifier * supportedView); typedef bool(WINAPI * pSnmpExtensionTrap) (
OUT AsnObjectIdentifier * enterprise,
OUT AsnInteger * genericTrap,
OUT AsnInteger * specificTrap,
OUT AsnTimeticks * timeStamp,
OUT RFC1157VarBindList * variableBindings); typedef bool(WINAPI * pSnmpExtensionQuery) (
IN BYTE requestType,
IN OUT RFC1157VarBindList * variableBindings,
OUT AsnInteger * errorStatus,
OUT AsnInteger * errorIndex); typedef bool(WINAPI * pSnmpExtensionInitEx) (
OUT AsnObjectIdentifier * supportedView); void main()
{
HINSTANCE m_hInst;
pSnmpExtensionInit m_Init;
pSnmpExtensionInitEx m_InitEx;
pSnmpExtensionQuery m_Query;
pSnmpExtensionTrap m_Trap;
HANDLE PollForTrapEvent;
AsnObjectIdentifier SupportedView;
UINT OID_ifEntryType[] = {1, 3, 6, 1, 2, 1, 2, 2, 1, 3};
UINT OID_ifEntryNum[] = {1, 3, 6, 1, 2, 1, 2, 1};
UINT OID_ipMACEntAddr[] = {1, 3, 6, 1, 2, 1, 2, 2, 1, 6};
AsnObjectIdentifier MIB_ifMACEntAddr =
{ sizeof(OID_ipMACEntAddr) sizeof(UINT), OID_ipMACEntAddr };
AsnObjectIdentifier MIB_ifEntryType =
{sizeof(OID_ifEntryType) sizeof(UINT), OID_ifEntryType};
AsnObjectIdentifier MIB_ifEntryNum =
{sizeof(OID_ifEntryNum) sizeof(UINT), OID_ifEntryNum};
RFC1157VarBindList varBindList;
RFC1157VarBind varBind[2];
AsnInteger errorStatus;
AsnInteger errorIndex;
AsnObjectIdentifier MIB_NULL = {0, 0};
int ret;
int dtmp;
int i = 0, j = 0;
bool found = false;
char TempEthernet[13];
m_Init = NULL;
m_InitEx = NULL;
m_Query = NULL;
m_Trap = NULL; /* 载入SNMP DLL并取得实例句柄 */
m_hInst = LoadLibrary("inetmib1.dll");
if (m_hInst < (HINSTANCE) HINSTANCE_ERROR)
{
m_hInst = NULL;
return;
}
m_Init =
(pSnmpExtensionInit) GetProcAddress(m_hInst, "SnmpExtensionInit");
m_InitEx =
(pSnmpExtensionInitEx) GetProcAddress(m_hInst,
"SnmpExtensionInitEx");
m_Query =
(pSnmpExtensionQuery) GetProcAddress(m_hInst,
"SnmpExtensionQuery");
m_Trap =
(pSnmpExtensionTrap) GetProcAddress(m_hInst, "SnmpExtensionTrap");
m_Init(GetTickCount(), &PollForTrapEvent, &SupportedView); /* 初始化用来接收m_Query查询结果的变量列表 */
varBindList.list = varBind;
varBind[0].name = MIB_NULL;
varBind[1].name = MIB_NULL; /* 在OID中拷贝并查找接口表中的入口数量 */
varBindList.len = 1; /* Only retrieving one item */
SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryNum);
ret =
m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
&errorIndex);
printf("# of adapters in this system : %in",
varBind[0].value.asnValue.number);
varBindList.len = 2; /* 拷贝OID的ifType-接口类型 */
SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryType); /* 拷贝OID的ifPhysAddress-物理地址 */
SNMP_oidcpy(&varBind[1].name, &MIB_ifMACEntAddr); do
{ /* 提交查询,结果将载入 varBindList。
可以预料这个循环调用的次数和系统中的接口卡数量相等 */
ret =
m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
&errorIndex);
if (!ret)
ret = 1;
else
/* 确认正确的返回类型 */
ret =
SNMP_oidncmp(&varBind[0].name, &MIB_ifEntryType,
MIB_ifEntryType.idLength); if (!ret) {
j++;
dtmp = varBind[0].value.asnValue.number;
printf("Interface #%i type : %in", j, dtmp); /* Type 6 describes ethernet interfaces */
if (dtmp == 6)
{ /* 确认我们已经在此取得地址 */
ret =
SNMP_oidncmp(&varBind[1].name, &MIB_ifMACEntAddr,
MIB_ifMACEntAddr.idLength);
if ((!ret) && (varBind[1].value.asnValue.address.stream != NULL))
{
if((varBind[1].value.asnValue.address.stream[0] == 0x44)
&& (varBind[1].value.asnValue.address.stream[1] == 0x45)
&& (varBind[1].value.asnValue.address.stream[2] == 0x53)
&& (varBind[1].value.asnValue.address.stream[3] == 0x54)
&& (varBind[1].value.asnValue.address.stream[4] == 0x00))
{
/* 忽略所有的拨号网络接口卡 */
printf("Interface #%i is a DUN adaptern", j);
continue;
}
if ((varBind[1].value.asnValue.address.stream[0] == 0x00)
&& (varBind[1].value.asnValue.address.stream[1] == 0x00)
&& (varBind[1].value.asnValue.address.stream[2] == 0x00)
&& (varBind[1].value.asnValue.address.stream[3] == 0x00)
&& (varBind[1].value.asnValue.address.stream[4] == 0x00)
&& (varBind[1].value.asnValue.address.stream[5] == 0x00))
{
/* 忽略由其他的网络接口卡返回的NULL地址 */
printf("Interface #%i is a NULL addressn", j);
continue;
}
sprintf(TempEthernet, "%02x%02x%02x%02x%02x%02x",
varBind[1].value.asnValue.address.stream[0],
varBind[1].value.asnValue.address.stream[1],
varBind[1].value.asnValue.address.stream[2],
varBind[1].value.asnValue.address.stream[3],
varBind[1].value.asnValue.address.stream[4],
varBind[1].value.asnValue.address.stream[5]);
printf("MAC Address of interface #%i: %sn", j,
TempEthernet);}
}
}
} while (!ret); /* 发生错误终止。 */
getch(); FreeLibrary(m_hInst);
/* 解除绑定 */
SNMP_FreeVarBind(&varBind[0]);
SNMP_FreeVarBind(&varBind[1]);
}
unit Mac;interfaceuses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls,NB30; //添加NB30type
TForm1 = class(TForm)
Button1: TButton;
Edit1: TEdit;
Label1: TLabel;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;
function Getmac:string;
implementation{$R *.dfm}
type
PASTAT = ^TASTAT;
TASTAT = record
adapter : TAdapterStatus;
name_buf : TNameBuffer;
end;//获取MAC地址
function Getmac:string;
var
ncb : TNCB;
s:string;
adapt : TASTAT;
lanaEnum : TLanaEnum;
i, j, m : integer;
strPart, strMac : string;
begin
result:='';
FillChar(ncb, SizeOf(TNCB), 0);
ncb.ncb_command := Char(NCBEnum);
ncb.ncb_buffer := PChar(@lanaEnum);
ncb.ncb_length := SizeOf(TLanaEnum);
s:=Netbios(@ncb);
m:=1;
if (Win32Platform = VER_PLATFORM_WIN32_WINDOWS) then
m:=0;
for i := 0 to integer(lanaEnum.length)-1 do
begin
FillChar(ncb, SizeOf(TNCB), 0);
ncb.ncb_command := Char(NCBReset);
ncb.ncb_lana_num := lanaEnum.lana[i];
Netbios(@ncb);
Netbios(@ncb);
FillChar(ncb, SizeOf(TNCB), 0);
ncb.ncb_command := Chr(NCBAstat);
ncb.ncb_lana_num := lanaEnum.lana[i];
ncb.ncb_callname := '* ';
ncb.ncb_buffer := PChar(@adapt);
ncb.ncb_length := SizeOf(TASTAT); if m=1 then
begin
if Netbios(@ncb) = Chr(0) then
strMac := '';
for j := 0 to 5 do
begin
strPart := IntToHex(integer(adapt.adapter.adapter_address[j]), 2);
strMac := strMac + strPart ;
end;
SetLength(strMac, Length(strMac));
end;
if m=0 then
if Netbios(@ncb) <> Chr(0) then
begin
strMac := '';
for j := 0 to 5 do
begin
strPart := IntToHex(integer(adapt.adapter.adapter_address[j]), 2);
strMac := strMac + strPart ;
end;
SetLength(strMac, Length(strMac));
end;
end;
result:=trim(strmac);
end;procedure TForm1.Button1Click(Sender: TObject);
begin
Edit1.Text := Getmac;
end;end.
var
LanaEnumNCB: PNCB;
begin
New(LanaEnumNCB);
ZeroMemory(LanaEnumNCB, SizeOf(TNCB));
try
with LanaEnumNCB^ do
begin
ncb_buffer := PChar(LanaEnum);
ncb_length := SizeOf(TLanaEnum);
ncb_command := Char(NCBENUM);
NetBios(LanaEnumNCB);
Result := Byte(ncb_cmd_cplt);
end;
finally
Dispose(LanaEnumNCB);
end;
end;NetBios调用获得MAC地址,网上抄的改了一下,有点乱,不过很好用,Win98,W2k,xp全兼容function ResetLana(LanaNum, ReqSessions, ReqNames: Byte;
LanaRes: TNBLanaResources): Byte;
var
ResetNCB: PNCB;begin
New(ResetNCB);
ZeroMemory(ResetNCB, SizeOf(TNCB));
try
with ResetNCB^ do
begin
ncb_lana_num := Char(LanaNum); // Set Lana_Num
ncb_lsn := Char(LanaRes); // Allocation of new resources
ncb_callname[0] := Char(ReqSessions); // Query of max sessions
ncb_callname[1] := #0; // Query of max NCBs (default)
ncb_callname[2] := Char(ReqNames); // Query of max names
ncb_callname[3] := #0; // Query of use NAME_NUMBER_1
ncb_command := Char(NCBRESET);
NetBios(ResetNCB);
Result := Byte(ncb_cmd_cplt);
end;
finally
Dispose(ResetNCB);
end;
end;
function GetLanaEnum(LanaEnum: PLanaEnum): Byte;
var
LanaEnumNCB: PNCB;
begin
New(LanaEnumNCB);
ZeroMemory(LanaEnumNCB, SizeOf(TNCB));
try
with LanaEnumNCB^ do
begin
ncb_buffer := PChar(LanaEnum);
ncb_length := SizeOf(TLanaEnum);
ncb_command := Char(NCBENUM);
NetBios(LanaEnumNCB);
Result := Byte(ncb_cmd_cplt);
end;
finally
Dispose(LanaEnumNCB);
end;
end;function GetMACAdress_netbios(id:integer):string;
var
ts:Tstringlist;
LanaEnum: PLanaEnum;
I: Integer;
AdapterStatus: PAdapterStatus;
StatNCB: PNCB;
MACAddress: PMACAddress;
begin
ts:=Tstringlist.create;
New(LanaEnum);
New(StatNCB);
New(MACAddress);
ZeroMemory(StatNCB, SizeOf(TNCB));
StatNCB.ncb_length := SizeOf(TAdapterStatus) + 255 * SizeOf(TNameBuffer);
GetMem(AdapterStatus, StatNCB.ncb_length); ZeroMemory(LanaEnum, SizeOf(TLanaEnum));
ZeroMemory(MACAddress, SizeOf(TMACAddress)); try
if GetLanaEnum(LanaEnum) = NRC_GOODRET then
begin
for I := 0 to Byte(LanaEnum.length) - 1 do
ts.Add(IntToStr(Byte(LanaEnum.lana[I])));
with StatNCB^ do
begin
ResetLana(strtoint(Ts[0]), 0, 0, lrAlloc);
ncb_buffer := PChar(AdapterStatus);
ncb_callname := '* ' + #0;
// ncb_lana_num := Char(LanaNum);
ncb_lana_num := Char(strtoint(Ts[0]));
ncb_command := Char(NCBASTAT);
NetBios(StatNCB);
// Result := Byte(ncb_cmd_cplt);
if Byte(ncb_cmd_cplt) = NRC_GOODRET then
MoveMemory(MACAddress, AdapterStatus, SizeOf(TMACAddress));
result:=Format('%2.2x-%2.2x-%2.2x-%2.2x-%2.2x-%2.2x',
[MACAddress[0], MACAddress[1], MACAddress[2],
MACAddress[3], MACAddress[4], MACAddress[5]])+#13;
end;
end;
finally
ts.free;
Dispose(LanaEnum);
FreeMem(AdapterStatus);
Dispose(StatNCB);
freemem(MACAddress);
end;end;