/// <summary>
/// MIB_IF_ROW2 Table[ANY_SIZE];
/// Because the length of the Table field is not fixed, we cannot marshal it
/// directly. If we get the pointer of the MIB_IPNET_TABLE2 instance, we have
/// to get the MIB_IF_ROW2 instance one by one using the pointer.
/// </summary>
/// <param name="pMIB_IPNET_TABLE2">
/// A pointer to a MIB_IPNET_TABLE2 structure that contains a table of neighbor
/// IP address entries on the local computer.
/// </param>
/// <returns></returns>
public static MIB_IPNET_ROW2[] GetTable(IntPtr pMIB_IPNET_TABLE2)
{
MIB_IPNET_ROW2[] table = null;
try
{
// Marshal a MIB_IPNET_TABLE2 instance from the pointer.
MIB_IPNET_TABLE2 mib_ipnet_table2 = (MIB_IPNET_TABLE2)Marshal.PtrToStructure(
pMIB_IPNET_TABLE2,
typeof(MIB_IPNET_TABLE2));
// The array length is the NumEntries.
table = new MIB_IPNET_ROW2[mib_ipnet_table2.NumEntries];
// Get the start address of the MIB_IPNET_ROW2 array.
IntPtr currentPointer = pMIB_IPNET_TABLE2 + 8;
for (int i = 0; i < mib_ipnet_table2.NumEntries; i++)
{
table[i] = (MIB_IPNET_ROW2)Marshal.PtrToStructure(
currentPointer,
typeof(MIB_IPNET_ROW2));
currentPointer += Marshal.SizeOf(table[i]);
}
return(table);
}
catch
{
return(null);
}
}
public static bool DeleteIPNetEntry(Guid InterfaceGuid, IPAddress address)
{
MIB_IPNET_ROW2 row = GetRow(InterfaceGuid, address);
uint result = DeleteIpNetEntry2(ref row);
if (result != 0)
{
Trace.WriteLine("DeleteIpNetEntry");
}
PrintErrorResult(result);
return(!(result != 0));
}
public static PhysicalAddress ResolveIpNetEntry(Guid InterfaceGUID, IPAddress address)
{
MIB_IPNET_ROW2 row = GetRow(InterfaceGUID, address);
uint result = ResolveIpNetEntry2(ref row, IntPtr.Zero);
if (result != 0)
{
Trace.WriteLine("ResolveIpNetEntry");
}
PrintErrorResult(result);
return(new PhysicalAddress(row.PhysicalAddress));
}
public static MIB_IPNET_ROW2 GetIpNetEntry(Guid InterfaceGuid, IPAddress IpAddress)
{
MIB_IPNET_ROW2 Row = GetRow(InterfaceGuid, IpAddress);
uint result = GetIpNetEntry2(ref Row);
if (result != 0)
{
Trace.WriteLine("GetIpNetEntry");
}
PrintErrorResult(result);
return(Row);
}
public static void SetIpNetEntry(Guid InterfaceGuid, PhysicalAddress oldPhysicalAddress, PhysicalAddress newPhysicalAddress)
{
IPAddress IPvX = IPAddress.None; uint result;
result = GetIpNetTable2(ADDRESS_FAMILY.AF_UNSPEC, out IntPtr plpNetTable);
foreach (MIB_IPNET_ROW2 row in GetIpNetTable)
{
IPvX = row.Address.si_family.Equals(ADDRESS_FAMILY.AF_INET) ? new IPAddress(row.Address.Ipv4.Address) : new IPAddress(row.Address.Ipv6.Address);
if (PhysicalAddress.Parse(BitConverter.ToString(row.PhysicalAddress, 0, 6)).Equals(oldPhysicalAddress))
{
MIB_IPNET_ROW2 row2 = row;
row2.PhysicalAddress = newPhysicalAddress.GetAddressBytes();
if (!(SetIpNetEntry2(ref row2) != 0))
{
Trace.WriteLine($"OldMac:{oldPhysicalAddress} NewMac:{newPhysicalAddress}");
}
}
}
}
private static MIB_IPNET_ROW2 GetRow(Guid InterfaceGuid, IPAddress address)
{
ConvertInterfaceGuidToLuid(ref InterfaceGuid, out NET_LUID NetLUID);
MIB_IPNET_ROW2 row = new MIB_IPNET_ROW2();
if (address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
byte[] IPv4 = address.GetAddressBytes();
row.Address.Ipv4.sin_addr0 = IPv4[0];
row.Address.Ipv4.sin_addr1 = IPv4[1];
row.Address.Ipv4.sin_addr2 = IPv4[2];
row.Address.Ipv4.sin_addr3 = IPv4[3];
row.Address.Ipv4.sin_port = 0;
row.Address.si_family = ADDRESS_FAMILY.AF_INET;
}
else if (address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
{
byte[] IPv6 = address.GetAddressBytes();
row.Address.Ipv6.sin6_addr0 = IPv6[0];
row.Address.Ipv6.sin6_addr1 = IPv6[1];
row.Address.Ipv6.sin6_addr2 = IPv6[2];
row.Address.Ipv6.sin6_addr3 = IPv6[3];
row.Address.Ipv6.sin6_addr4 = IPv6[4];
row.Address.Ipv6.sin6_addr5 = IPv6[5];
row.Address.Ipv6.sin6_addr6 = IPv6[6];
row.Address.Ipv6.sin6_addr7 = IPv6[7];
row.Address.Ipv6.sin6_addr8 = IPv6[8];
row.Address.Ipv6.sin6_addr9 = IPv6[9];
row.Address.Ipv6.sin6_addr10 = IPv6[10];
row.Address.Ipv6.sin6_addr11 = IPv6[11];
row.Address.Ipv6.sin6_addr12 = IPv6[12];
row.Address.Ipv6.sin6_addr13 = IPv6[13];
row.Address.Ipv6.sin6_addr14 = IPv6[14];
row.Address.Ipv6.sin6_addr15 = IPv6[15];
row.Address.Ipv6.sin6_port = 0;
row.Address.si_family = ADDRESS_FAMILY.AF_INET6;
}
row.InterfaceLuid = NetLUID;
return(row);
}
public static bool SetIpNetEntry(Guid InterfaceGuid, PhysicalAddress macaddr, IPAddress ipaddress)
{
MIB_IPNET_ROW2 row = GetRow(InterfaceGuid, ipaddress);
byte[] PhysicalAddr = macaddr.GetAddressBytes();
row.PhysicalAddress = new byte[32];
row.PhysicalAddressLength = 32;
row.PhysicalAddress[0] = PhysicalAddr[0];
row.PhysicalAddress[1] = PhysicalAddr[1];
row.PhysicalAddress[2] = PhysicalAddr[2];
row.PhysicalAddress[3] = PhysicalAddr[3];
row.PhysicalAddress[4] = PhysicalAddr[4];
row.PhysicalAddress[5] = PhysicalAddr[5];
uint result = SetIpNetEntry2(ref row);
if (result != 0)
{
Trace.WriteLine("SetIpNetEntry");
}
PrintErrorResult(result);
return(!(result != 0));
}
private static extern uint GetIpNetEntry2([In, Out] ref MIB_IPNET_ROW2 Row);
private static extern uint ResolveIpNetEntry2([In, Out] ref MIB_IPNET_ROW2 Row, [In] IntPtr SourceAddress);
