1.NDIS(DDK)通过驱动程序获取MAC地址
ndis规范中说明，网卡驱动程序支持ioctl_ndis_query_stats接口
参数如下：
OID_802_3_PERMANENT_ADDRESS ：物理地址
OID_802_3_CURRENT_ADDRESS ：mac地址
于是我们的方法就得到了。
首先，看看注册表，找一找网卡有几块，分别是什么设备名。
具体位置和os有关，2000下在hlm\software\microsoft\windows nt\current version\networkcards。
然后createfile(devicename,...)注意，要用linkname,因此
还要加上"////.//device//".
接着
deviceiocontrol(hmac,IOCTL_NDIS_QUERY_STATS,
OID_802_3_PERMANENT_ADDRESS/OID_802_3_CURRENT_ADDRESS...)
具体的情况可以参看ddk下的
OID_802_3_CURRENT_ADDRESS条目
2.NetAPI-2得到MAC (MSDN推荐方法)
#include <windows.h>
//#include <wincon.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
typedef struct _ASTAT_
{
ADAPTER_STATUS adapt;
NAME_BUFFER NameBuff [30];
}ASTAT, * PASTAT;
ASTAT Adapter;
int main (void)
{
NCB Ncb;
UCHAR uRetCode;
char NetName[50];
LANA_ENUM lenum;
int i;
memset( &Ncb, 0, sizeof(Ncb) );
Ncb.ncb_command = NCBENUM;
Ncb.ncb_buffer = (UCHAR *)&lenum;
Ncb.ncb_length = sizeof(lenum);
uRetCode = Netbios( &Ncb );
printf( "The NCBENUM return code is: 0x%x \n", uRetCode );
for(i=0; i < lenum.length ;i++)
{
memset( &Ncb, 0, sizeof(Ncb) );
Ncb.ncb_command = NCBRESET;
Ncb.ncb_lana_num = lenum.lana[i];
uRetCode = Netbios( &Ncb );
printf( "The NCBRESET on LANA %d return code is: 0x%x \n",
lenum.lana, uRetCode );
memset( &Ncb, 0, sizeof (Ncb) );
Ncb.ncb_command = NCBASTAT;
Ncb.ncb_lana_num = lenum.lana[i];
strcpy( Ncb.ncb_callname, "* " );
Ncb.ncb_buffer = (char *) &Adapter;
Ncb.ncb_length = sizeof(Adapter);
uRetCode = Netbios( &Ncb );
printf( "The NCBASTAT on LANA %d return code is: 0x%x \n",
lenum.lana, uRetCode );
if ( uRetCode == 0 )
{
printf( "The Ethernet Number on LANA %d is:%02x%02x%02x%02x%02x%02x\n",
lenum.lana,
Adapter.adapt.adapter_address[0],
Adapter.adapt.adapter_address[1],
Adapter.adapt.adapter_address[2],
Adapter.adapt.adapter_address[3],
Adapter.adapt.adapter_address[4],
Adapter.adapt.adapter_address[5] );
}
}
}
3.用COM API获取网卡MAC地址
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;
}
4.用NetAPI来获取网卡MAC地址
首先在头文件定义中加入#include "nb30.h"
#pragma comment(lib,"netapi32.lib")
typedef struct _ASTAT_
{
ADAPTER_STATUS adapt;
NAME_BUFFER NameBuff[30];
} ASTAT, * PASTAT;
就可以这样调用来获取远程网卡MAC地址了：
CString GetMacAddress(CString sNetBiosName)
{
ASTAT Adapter;
NCB ncb;
UCHAR uRetCode;
memset(&ncb, 0, sizeof(ncb));
ncb.ncb_command = NCBRESET;
ncb.ncb_lana_num = 0;
uRetCode = Netbios(&ncb);
memset(&ncb, 0, sizeof(ncb));
ncb.ncb_command = NCBASTAT;
ncb.ncb_lana_num = 0;
sNetBiosName.MakeUpper();
FillMemory(ncb.ncb_callname, NCBNAMSZ - 1, 0x20);
strcpy((char *)ncb.ncb_callname, (LPCTSTR) sNetBiosName);
ncb.ncb_callname[sNetBiosName.GetLength()] = 0x20;
ncb.ncb_callname[NCBNAMSZ] = 0x0;
ncb.ncb_buffer = (unsigned char *) &Adapter;
ncb.ncb_length = sizeof(Adapter);
uRetCode = Netbios(&ncb);
CString sMacAddress;
if (uRetCode == 0)
{
sMacAddress.Format(_T("%02x%02x%02x%02x%02x%02x"),
Adapter.adapt.adapter_address[0],
Adapter.adapt.adapter_address[1],
Adapter.adapt.adapter_address[2],
Adapter.adapt.adapter_address[3],
Adapter.adapt.adapter_address[4],
Adapter.adapt.adapter_address[5]);
}
return sMacAddress;
}
5、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;
/* Load the SNMP dll and get the addresses of the functions
necessary */
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);
/* Initialize the variable list to be retrieved by m_Query */
varBindList.list = varBind;
varBind[0].name = MIB_NULL;
varBind[1].name = MIB_NULL;
/* Copy in the OID to find the number of entries in the
Inteface table */
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;
/* Copy in the OID of ifType, the type of interface */
SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryType);
/* Copy in the OID of ifPhysAddress, the address */
SNMP_oidcpy(&varBind[1].name, &MIB_ifMACEntAddr);
do
{
/* Submit the query. Responses will be loaded into varBindList.
We can expect this call to succeed a # of times corresponding
to the # of adapters reported to be in the system */
ret =
m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
&errorIndex);
if (!ret)
ret = 1;
else
/* Confirm that the proper type has been returned */
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)
{
/* Confirm that we have an address here */
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))
{
/* Ignore all dial-up networking adapters */
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))
{
/* Ignore NULL addresses returned by other network
interfaces */
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); /* Stop only on an error. An error will occur
when we go exhaust the list of interfaces to
be examined */
getch();
FreeLibrary(m_hInst);
/* Free the bindings */
SNMP_FreeVarBind(&varBind[0]);
SNMP_FreeVarBind(&varBind[1]);
}
ndis规范中说明，网卡驱动程序支持ioctl_ndis_query_stats接口
参数如下：
OID_802_3_PERMANENT_ADDRESS ：物理地址
OID_802_3_CURRENT_ADDRESS ：mac地址
于是我们的方法就得到了。
首先，看看注册表，找一找网卡有几块，分别是什么设备名。
具体位置和os有关，2000下在hlm\software\microsoft\windows nt\current version\networkcards。
然后createfile(devicename,...)注意，要用linkname,因此
还要加上"////.//device//".
接着
deviceiocontrol(hmac,IOCTL_NDIS_QUERY_STATS,
OID_802_3_PERMANENT_ADDRESS/OID_802_3_CURRENT_ADDRESS...)
具体的情况可以参看ddk下的
OID_802_3_CURRENT_ADDRESS条目
2.NetAPI-2得到MAC (MSDN推荐方法)
#include <windows.h>
//#include <wincon.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
typedef struct _ASTAT_
{
ADAPTER_STATUS adapt;
NAME_BUFFER NameBuff [30];
}ASTAT, * PASTAT;
ASTAT Adapter;
int main (void)
{
NCB Ncb;
UCHAR uRetCode;
char NetName[50];
LANA_ENUM lenum;
int i;
memset( &Ncb, 0, sizeof(Ncb) );
Ncb.ncb_command = NCBENUM;
Ncb.ncb_buffer = (UCHAR *)&lenum;
Ncb.ncb_length = sizeof(lenum);
uRetCode = Netbios( &Ncb );
printf( "The NCBENUM return code is: 0x%x \n", uRetCode );
for(i=0; i < lenum.length ;i++)
{
memset( &Ncb, 0, sizeof(Ncb) );
Ncb.ncb_command = NCBRESET;
Ncb.ncb_lana_num = lenum.lana[i];
uRetCode = Netbios( &Ncb );
printf( "The NCBRESET on LANA %d return code is: 0x%x \n",
lenum.lana, uRetCode );
memset( &Ncb, 0, sizeof (Ncb) );
Ncb.ncb_command = NCBASTAT;
Ncb.ncb_lana_num = lenum.lana[i];
strcpy( Ncb.ncb_callname, "* " );
Ncb.ncb_buffer = (char *) &Adapter;
Ncb.ncb_length = sizeof(Adapter);
uRetCode = Netbios( &Ncb );
printf( "The NCBASTAT on LANA %d return code is: 0x%x \n",
lenum.lana, uRetCode );
if ( uRetCode == 0 )
{
printf( "The Ethernet Number on LANA %d is:%02x%02x%02x%02x%02x%02x\n",
lenum.lana,
Adapter.adapt.adapter_address[0],
Adapter.adapt.adapter_address[1],
Adapter.adapt.adapter_address[2],
Adapter.adapt.adapter_address[3],
Adapter.adapt.adapter_address[4],
Adapter.adapt.adapter_address[5] );
}
}
}
3.用COM API获取网卡MAC地址
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;
}
4.用NetAPI来获取网卡MAC地址
首先在头文件定义中加入#include "nb30.h"
#pragma comment(lib,"netapi32.lib")
typedef struct _ASTAT_
{
ADAPTER_STATUS adapt;
NAME_BUFFER NameBuff[30];
} ASTAT, * PASTAT;
就可以这样调用来获取远程网卡MAC地址了：
CString GetMacAddress(CString sNetBiosName)
{
ASTAT Adapter;
NCB ncb;
UCHAR uRetCode;
memset(&ncb, 0, sizeof(ncb));
ncb.ncb_command = NCBRESET;
ncb.ncb_lana_num = 0;
uRetCode = Netbios(&ncb);
memset(&ncb, 0, sizeof(ncb));
ncb.ncb_command = NCBASTAT;
ncb.ncb_lana_num = 0;
sNetBiosName.MakeUpper();
FillMemory(ncb.ncb_callname, NCBNAMSZ - 1, 0x20);
strcpy((char *)ncb.ncb_callname, (LPCTSTR) sNetBiosName);
ncb.ncb_callname[sNetBiosName.GetLength()] = 0x20;
ncb.ncb_callname[NCBNAMSZ] = 0x0;
ncb.ncb_buffer = (unsigned char *) &Adapter;
ncb.ncb_length = sizeof(Adapter);
uRetCode = Netbios(&ncb);
CString sMacAddress;
if (uRetCode == 0)
{
sMacAddress.Format(_T("%02x%02x%02x%02x%02x%02x"),
Adapter.adapt.adapter_address[0],
Adapter.adapt.adapter_address[1],
Adapter.adapt.adapter_address[2],
Adapter.adapt.adapter_address[3],
Adapter.adapt.adapter_address[4],
Adapter.adapt.adapter_address[5]);
}
return sMacAddress;
}
5、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;
/* Load the SNMP dll and get the addresses of the functions
necessary */
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);
/* Initialize the variable list to be retrieved by m_Query */
varBindList.list = varBind;
varBind[0].name = MIB_NULL;
varBind[1].name = MIB_NULL;
/* Copy in the OID to find the number of entries in the
Inteface table */
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;
/* Copy in the OID of ifType, the type of interface */
SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryType);
/* Copy in the OID of ifPhysAddress, the address */
SNMP_oidcpy(&varBind[1].name, &MIB_ifMACEntAddr);
do
{
/* Submit the query. Responses will be loaded into varBindList.
We can expect this call to succeed a # of times corresponding
to the # of adapters reported to be in the system */
ret =
m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
&errorIndex);
if (!ret)
ret = 1;
else
/* Confirm that the proper type has been returned */
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)
{
/* Confirm that we have an address here */
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))
{
/* Ignore all dial-up networking adapters */
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))
{
/* Ignore NULL addresses returned by other network
interfaces */
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); /* Stop only on an error. An error will occur
when we go exhaust the list of interfaces to
be examined */
getch();
FreeLibrary(m_hInst);
/* Free the bindings */
SNMP_FreeVarBind(&varBind[0]);
SNMP_FreeVarBind(&varBind[1]);
}
