Get MAC address

[Cpp]
// Define the NIC type
Typedef DWORD BFSYS_MAC_T;
# Define BFSYS_MAC_ALL 0 xFFFFFFFF // All NICs
# Define BFSYS_MAC_PHYSICAL 0x00000001 // physical Nic
# Define BFSYS_MAC_WIRELESS 0x00000002 // wireless Nic
# Define BFSYS_MAC_VIRTUAL 0x00000004 // virtual network card (for example, virtual network card with virtual machine)
# Define BFSYS_MAC_UNKNOWN 0x80000000 // unknown Nic
 
// Define the MAC address structure and array of the NIC
Typedef struct _ BFMAC_ADDR_STR _
{
BFSYS_MAC_T Type;
DWORD AddressLength;
BYTE Address [32];
} BFMACADDR, * PBFMACADDR;
Typedef vector <BFMACADDR> BFMacAddrArray;
 
// Obtain the NIC address and return the total number of NICs of the corresponding type
BFLIB_API
DWORD
BF_GetMacAddr (
IN BFSYS_MAC_T type, // type of the NIC to be retrieved
OUT BFMacAddrArray * pAddrAry = NULL // output the address information of the corresponding Nic type
);

// Define the NIC type
Typedef DWORD BFSYS_MAC_T;
# Define BFSYS_MAC_ALL 0 xFFFFFFFF // All NICs
# Define BFSYS_MAC_PHYSICAL 0x00000001 // physical Nic
# Define BFSYS_MAC_WIRELESS 0x00000002 // wireless Nic
# Define BFSYS_MAC_VIRTUAL 0x00000004 // virtual network card (for example, virtual network card with virtual machine)
# Define BFSYS_MAC_UNKNOWN 0x80000000 // unknown Nic

// Define the MAC address structure and array of the NIC
Typedef struct _ BFMAC_ADDR_STR _
{
BFSYS_MAC_T Type;
DWORD AddressLength;
BYTE Address [32];
} BFMACADDR, * PBFMACADDR;
Typedef vector <BFMACADDR> BFMacAddrArray;

// Obtain the NIC address and return the total number of NICs of the corresponding type
BFLIB_API
DWORD
BF_GetMacAddr (
IN BFSYS_MAC_T type, // type of the NIC to be retrieved
OUT BFMacAddrArray * pAddrAry = NULL // output the address information of the corresponding Nic type
);
[Cpp]
// Obtain the NIC address and return the total number of NICs of the corresponding type
BFLIB_API
DWORD
BF_GetMacAddr (
IN BFSYS_MAC_T type, // type of the NIC to be retrieved
OUT BFMacAddrArray * pAddrAry // output the address information of the corresponding Nic type
)
{
// Clear the previous information
If (pAddrAry! = NULL)
{
PAddrAry-> clear ();
}
 
// Obtain the Adapter Information
ULONG ulSize = sizeof (IP_ADAPTER_INFO );
BYTE * pBuf = new BYTE [ulSize];
If (pBuf = NULL)
{
Return 0;
}
PIP_ADAPTER_INFO pIPAdapterInfo = (PIP_ADAPTER_INFO) pBuf;
DWORD dwRet =: GetAdaptersInfo (pIPAdapterInfo, & ulSize );
 
// Apply for memory again if the Buffer Overflows
If (ERROR_BUFFER_OVERFLOW = dwRet)
{
Delete [] pBuf;
PBuf = NULL;
PIPAdapterInfo = NULL;
PBuf = new BYTE [ulSize];
If (pBuf = NULL)
{
Return 0;
}
PIPAdapterInfo = (PIP_ADAPTER_INFO) pBuf;
DwRet =: GetAdaptersInfo (pIPAdapterInfo, & ulSize );
}
 
// An error occurred while obtaining the Adapter information.
If (dwRet! = ERROR_SUCCESS)
{
Delete [] pBuf;
PBuf = NULL;
PIPAdapterInfo = NULL;
Return 0;
}
 
// Traverse all Nic Information
DWORD dwTotalCount = 0;
BFMACADDR MacAddr;
While (pIPAdapterInfo! = NULL)
{
// Obtain the MAC address information
Memset (& MacAddr, 0, sizeof (MacAddr ));
MacAddr. AddressLength = pIPAdapterInfo-> AddressLength;
For (UINT I = 0; I <pIPAdapterInfo-> AddressLength; I ++)
{
MacAddr. Address [I] = pIPAdapterInfo-> Address [I];
}
 
// Whether the network card is wireless
If (pIPAdapterInfo-> Type = 71)
{
MacAddr. Type = BFSYS_MAC_WIRELESS;
}
// Whether it is a physical Nic
Else if (pIPAdapterInfo-> Type = MIB_IF_TYPE_ETHERNET
& Strstr (pIPAdapterInfo-> Description, "PCI")> 0
)
{
MacAddr. Type = BFSYS_MAC_PHYSICAL;
}
// Whether the network interface is virtual
Else if (pIPAdapterInfo-> Type = MIB_IF_TYPE_ETHERNET
& Strstr (pIPAdapterInfo-> Description, "Virtual")> 0
)
{
MacAddr. Type = BFSYS_MAC_VIRTUAL;
}
// Other NICs
Else
{
MacAddr. Type = BFSYS_MAC_UNKNOWN;
}
 
// Required Nic type
If (type & MacAddr. Type) = MacAddr. Type)
{
DwTotalCount + = 1;
If (pAddrAry! = NULL)
{
PAddrAry-> push_back (MacAddr );
}
}
 
// Traverse the next Adapter
PIPAdapterInfo = pIPAdapterInfo-> Next;
}
 
// Release the memory
Delete [] pBuf;
PBuf = NULL;
PIPAdapterInfo = NULL;
 
// Returns the number of retrieved results.
Return dwTotalCount;
}

// Obtain the NIC address and return the total number of NICs of the corresponding type
BFLIB_API
DWORD
BF_GetMacAddr (
IN BFSYS_MAC_T type, // type of the NIC to be retrieved
OUT BFMacAddrArray * pAddrAry // output the address information of the corresponding Nic type
)
{
// Clear the previous information
If (pAddrAry! = NULL)
{
PAddrAry-> clear ();
}

// Obtain the Adapter Information
ULONG ulSize = sizeof (IP_ADAPTER_INFO );
BYTE * pBuf = new BYTE [ulSize];
If (pBuf = NULL)
{
Return 0;
}
PIP_ADAPTER_INFO pIPAdapterInfo = (PIP_ADAPTER_INFO) pBuf;
DWORD dwRet =: GetAdaptersInfo (pIPAdapterInfo, & ulSize );

// Apply for memory again if the Buffer Overflows
If (ERROR_BUFFER_OVERFLOW = dwRet)
{
Delete [] pBuf;
PBuf = NULL;
PIPAdapterInfo = NULL;
PBuf = new BYTE [ulSize];
If (pBuf = NULL)
{
Return 0;
}
PIPAdapterInfo = (PIP_ADAPTER_INFO) pBuf;
DwRet =: GetAdaptersInfo (pIPAdapterInfo, & ulSize );
}

// An error occurred while obtaining the Adapter information.
If (dwRet! = ERROR_SUCCESS)
{
Delete [] pBuf;
PBuf = NULL;
PIPAdapterInfo = NULL;
Return 0;
}

// Traverse all Nic Information
DWORD dwTotalCount = 0;
BFMACADDR MacAddr;
While (pIPAdapterInfo! = NULL)
{
// Obtain the MAC address information
Memset (& MacAddr, 0, sizeof (MacAddr ));
MacAddr. AddressLength = pIPAdapterInfo-> AddressLength;
For (UINT I = 0; I <pIPAdapterInfo-> AddressLength; I ++)
{
MacAddr. Address [I] = pIPAdapterInfo-> Address [I];
}

// Whether the network card is wireless
If (pIPAdapterInfo-> Type = 71)
{
MacAddr. Type = BFSYS_MAC_WIRELESS;
}
// Whether it is a physical Nic
Else if (pIPAdapterInfo-> Type = MIB_IF_TYPE_ETHERNET
& Strstr (pIPAdapterInfo-> Description, "PCI")> 0
)
{
MacAddr. Type = BFSYS_MAC_PHYSICAL;
}
// Whether the network interface is virtual
Else if (pIPAdapterInfo-> Type = MIB_IF_TYPE_ETHERNET
& Strstr (pIPAdapterInfo-> Description, "Virtual")> 0
)
{
MacAddr. Type = BFSYS_MAC_VIRTUAL;
}
// Other NICs
Else
{
MacAddr. Type = BFSYS_MAC_UNKNOWN;
}

// Required Nic type
If (type & MacAddr. Type) = MacAddr. Type)
{
DwTotalCount + = 1;
If (pAddrAry! = NULL)
{
PAddrAry-> push_back (MacAddr );
}
}

// Traverse the next Adapter
PIPAdapterInfo = pIPAdapterInfo-> Next;
}

// Release the memory
Delete [] pBuf;
PBuf = NULL;
PIPAdapterInfo = NULL;

// Returns the number of retrieved results.
Return dwTotalCount;
}
Use

# Include <Iphlpapi. h>
# Pragma comment (lib, "Iphlpapi. lib") // you need to add the Iphlpapi. lib Library