如何得到网卡的MAC地址？？

看看这里两段代码：
//获得mac address
// Fetches the MAC address and prints it
static void GetMACaddress(void)
{
  IP_ADAPTER_INFO AdapterInfo[16];       // Allocate information
                                         // for up to 16 NICs
  DWORD dwBufLen = sizeof(AdapterInfo);  // Save memory size of buffer  DWORD dwStatus = GetAdaptersInfo(      // Call GetAdapterInfo
    AdapterInfo,                 // [out] buffer to receive data
    &dwBufLen);                  // [in] size of receive data buffer
  assert(dwStatus == ERROR_SUCCESS);  // Verify return value is
                                      // valid, no buffer overflow  PIP_ADAPTER_INFO pAdapterInfo = AdapterInfo; // Contains pointer to
                                               // current adapter info
  do {
    PrintMACaddress(pAdapterInfo->Address); // Print MAC address
    pAdapterInfo = pAdapterInfo->Next;    // Progress through
                                          // linked list
  }
  while(pAdapterInfo);                    // Terminate if last adapter
}
//详细请见(source code ）:
http://codeguru.earthweb.com/network/GetMAC.html
// Fetches the MAC address and prints it
static void GetMACaddress(void)
{
  unsigned char MACData[8];      // Allocate data structure
                                 // for MAC (6 bytes needed)  WKSTA_TRANSPORT_INFO_0 *pwkti; // Allocate data structure
                                 // for NetBIOS
  DWORD dwEntriesRead;
  DWORD dwTotalEntries;
  BYTE *pbBuffer;

  // Get MAC address via NetBIOS's enumerate function
  NET_API_STATUS dwStatus = NetWkstaTransportEnum(
   NULL,                 // [in]  server name
   0,                    // [in]  data structure to return
   &pbBuffer,            // [out] pointer to buffer
   MAX_PREFERRED_LENGTH, // [in]  maximum length
   &dwEntriesRead,       // [out] counter of elements
                         //       actually enumerated
   &dwTotalEntries,      // [out] total number of elements
                         //       that could be enumerated
   NULL);                // [in/out] resume handle
  assert(dwStatus == NERR_Success);  pwkti = (WKSTA_TRANSPORT_INFO_0 *)pbBuffer; // type cast the buffer  for(DWORD i=1; i< dwEntriesRead; i++)  // first address is
                                            // 00000000, skip it
  {                                         // enumerate MACs & print
    swscanf((wchar_t *)pwkti[i].wkti0_transport_address,
            L"%2hx%2hx%2hx%2hx%2hx%2hx",
            &MACData[0],
            &MACData[1],
            &MACData[2],
            &MACData[3],
            &MACData[4],
            &MACData[5]);
    PrintMACaddress(MACData);
  }  // Release pbBuffer allocated by above function
  dwStatus = NetApiBufferFree(pbBuffer);
  assert(dwStatus == NERR_Success);
}

//use IpHlpapi
// Note: Win2000 only
//   NOT NT 4.0, Win9x, WinME#pragma comment( lib, "Iphlpapi" )
#pragma comment( lib, "Ws2_32" )#include <windows.h>
#include <Iphlpapi.h>int main( ) {IPAddr ip = 0;
ULONG  mac = 0;
DWORD  error = 0;    DWORD dwSize = sizeof( ULONG) ;
    ip = inet_addr("192.168.0.100");
    //ip = inet_addr("xxx.xxx.xxx.xxx");
    error = SendARP(ip,0,&mac,&dwSize);    return 0;
}

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://---------------------------------------------------------------------------/
第二种方法－使用COM GUID API
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;
}

第三种方法－使用SNMP扩展API
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]);
} --------------------------------
NO.4
    int ip = 0; //here
    unsigned char   mac[6];
    DWORD  error = 0;
    ULONG dwSize = 6;
        m_szRemoteIP.GetWindowText(m_szremoteip);
    ip = inet_addr(m_szremoteip);
    error = SendARP(ip,0,(PULONG)&mac,&dwSize);
    if (error == NO_ERROR )
        {
        //    printf( "MacAddress: " );
            //    printf( "%d\n", mac );
                m_szRemoteMAC.Format("%02X-%02X-%02X-%02X-%02X-%02X",mac[0],mac[1],mac[2],mac[3],mac[4],mac[5]);//here
        }
        else
        //    printf( "SendARP Error:%d\n", GetLastError());
        return;
    m_remotemac.SetWindowText(m_szRemoteMAC);

得到远程机器的mac地址
#include "..."
#include "iphlpapi.h"#pragma comment ( lib, "ws2_32.lib" )
#pragma comment ( lib, "Iphlpapi.lib" )void main( int argc, char ** argv )
{
    int numberOfHost = 1;
    struct hostent *remoteHostent;    //处理命令行参数
    if ( argc == 3 )
    numberOfHost = atoi( argv[2] );
    if ( ( argc >3 ) || ( argc < 2 ) )
    {
        printf( "RmtHost v0.2 - Get remote HostName /MacAddress\n" );
        printf( "by ShotgunLabs ( [email protected] )\n\n" );
        printf( "Usage　:\n\tRmtHost.exe [RemoteIP] \n\n" );
        printf( "Example:\n\tRmtHost.exe 192.168.0.3\n" );
        printf( "\tRmtHost.exe 192.168.0.3 255\n\n" );
        exit( 0 );
    }     //初始化SOCKET
    WSADATA wsaData;
    int iRet = WSAStartup(MAKEWORD(2,1), &wsaData);
    if ( iRet != 0 )
    {
        printf( "WSAStartup Error:%d\n", GetLastError() );
        exit( 0 );
    }
    int nRemoteAddr = inet_addr( argv[1] );
    remoteHostent= (struct hostent*)malloc( sizeof(struct hostent ));
    struct in_addr sa;
    for ( int i = 0; i < numberOfHost; i ++ )
    {
        //获取远程机器名
        sa.s_addr = nRemoteAddr;
        printf( "\nIpAddress : %s\n", inet_ntoa( sa ) );
        remoteHostent = gethostbyaddr( (char*)&nRemoteAddr,4, AF_INET );
        if ( remoteHostent )
            printf( "HostName　: %s\n",remoteHostent->h_name );
        else
            printf( "gethostbyaddr Error:%d\n",GetLastError() );
        //发送ARP查询包获得远程MAC地址        unsigned char macAddress[6];
        ULONG macAddLen = 6;
        iRet=SendARP(nRemoteAddr, (unsigned long)NULL,(PULONG)&macAddress, &macAddLen);
        if ( iRet == NO_ERROR )
        {
            printf( "MacAddress: " );
            for( int i =0; i<6; i++ )
            {
                printf( "%.2x", macAddress[i] );
                if ( i<5 ) printf( "-" );
            }
            printf( "\n" );
        }
        else
            printf( "SendARP Error:%d\n", GetLastError());
            nRemoteAddr = htonl( ntohl( nRemoteAddr ) + 1 );
    }
}

IpHlpapi.lib-->Platform SDK
Get mac address:
NetBIOS(可以抓到所有安装NetBIOS的机器的Mac,一般为windows机器)
SNMP(可以抓到所有安装SNMP的机器的Mac,并且可以抓到一台所有的Mac address)
GetIpNetTable(可以得到存放于Arp cache中的机器的Mac address,作用类似于
arp -a,但是这些机器不包括本机,并且只能记录router table中存在的网段)

NetBios有时候不能得到便携机的MAC,建议使用IP助手,我上次就有这个问题,在本论坛中已界贴,去找找

Iphlpapi.lib我的确有，可是Iphlpapi.h我就怎么都找不到。
我上google查，看到很多说同样问题的，可是除了说下载platform SDK的就没别的方法了，那东西可是要上百兆的啊！

function GetMac:string;
     procedure NBGetMac(Strings: TStrings);
      function HexBL(by: Byte): String;
      begin
        Result := Format('%x', [by]);
        if Length(Result) < 2 then
          Result := '0' + Result;
      end;
    var
      NCB: TNCB;
      Adapter: TAdapterStatus;
      LanaEnum: TLanaEnum;
      I, J: Integer;
      Str: String;
    begin
      Strings.Clear;
      ZeroMemory(@NCB,SizeOf(NCB));      NCB.ncb_command := Chr(NCBENUM);
      NetBios(@NCB);      NCB.ncb_buffer := @LanaEnum;
      NCB.ncb_length := SizeOf(LanaEnum);
      NCB.ncb_command := Chr(NCBENUM);
      NetBios(@NCB);      for I := 0 to Ord(LanaEnum.length) - 1 do
      begin
        ZeroMemory(@NCB,SizeOf(NCB));
        NCB.ncb_command := Chr(NCBRESET);
        NCB.ncb_lana_num := LanaEnum.lana[I];
        NetBios(@NCB);        ZeroMemory(@NCB,SizeOf(NCB));
        NCB.ncb_command := Chr(NCBASTAT);
        NCB.ncb_lana_num := LanaEnum.lana[I];
        StrPCopy(NCB.ncb_callname,'*');
        NCB.ncb_buffer := @Adapter;
        NCB.ncb_length := SizeOf(Adapter);
        NetBios(@NCB);        Str := '';
        if  (Adapter.xmit_success<>0) and (Adapter.recv_success<>0) then
        begin
          for J := 0 to 5 do
          begin
            if J > 0 then Str := Str + '-';
            Str := Str + HexBL(Byte(Adapter.adapter_address[J]));
          end;
          Strings.Add(Str);
        end;
      end;
    end;
var
  cardlist:Tstrings;
  stemp:string;begin
  cardlist:=Tstringlist.Create;  NBGetMac(cardlist);
  //if cardlist.Count>=4 then
     stemp:= cardlist.Strings[0];
  //else
  //  stemp:=cardlist.Strings[round(((cardlist.Count+1)/2)+0.2)-1];  while pos('-',stemp)>0 do
     system.Delete(stemp,pos('-',stemp),1);
  result:=stemp
end;

这些方法都是个注册表读取的,
见:: 如何从EPROM直接得到本机的MAC地址？？？,我正在请教

&&NetBios不推荐，因为会获得一些虚拟网卡地址。IpHlp不错，ipconfig就是用的这种方法。若缺少头文件可以安装一个SDK。

调试易

如何得到网卡的MAC地址？？

解决方案 »