Пример #1
0
        internal static Owner?GetOwningModuleTCP6(MIB_TCP6ROW_OWNER_MODULE row)
        {
            Owner?ret = null;
            //if (ownerCache.TryGetValue(row, out ret))
            //{
            //    return ret;
            //}

            IntPtr buffer = IntPtr.Zero;

            try
            {
                uint buffSize = 0;
                var  retn     = NativeMethods.GetOwnerModuleFromTcp6Entry(ref row, TCPIP_OWNER_MODULE_INFO_CLASS.TCPIP_OWNER_MODULE_INFO_BASIC, IntPtr.Zero, ref buffSize);
                if (retn != NO_ERROR && retn != ERROR_INSUFFICIENT_BUFFER)
                {
                    //Cannot get owning module for this connection
                    LogHelper.Info("Unable to get the connection owner.");
                    return(ret);
                }
                if (buffSize == 0)
                {
                    //No buffer? Probably means we can't retrieve any information about this connection; skip it
                    LogHelper.Info("Unable to get the connection owner.");
                    return(ret);
                }
                buffer = Marshal.AllocHGlobal((int)buffSize);

                //GetOwnerModuleFromTcp6Entry needs the fields of TCPIP_OWNER_MODULE_INFO_BASIC to be NULL
                IPHelper.NativeMethods.ZeroMemory(buffer, buffSize);

                var resp = NativeMethods.GetOwnerModuleFromTcp6Entry(ref row, TCPIP_OWNER_MODULE_INFO_CLASS.TCPIP_OWNER_MODULE_INFO_BASIC, buffer, ref buffSize);
                if (resp == 0)
                {
                    ret = new Owner(Marshal.PtrToStructure <TCPIP_OWNER_MODULE_BASIC_INFO>(buffer));
                }
                else if (resp != ERROR_NOT_FOUND) // Ignore closed connections
                {
                    LogHelper.Error("Unable to get the connection owner.", new Win32Exception((int)resp));
                }

                //ownerCache.Add(row, ret);

                return(ret);
            }
            finally
            {
                if (buffer != IntPtr.Zero)
                {
                    Marshal.FreeHGlobal(buffer);
                }
            }
        }
Пример #2
0
 internal static extern uint GetOwnerModuleFromTcp6Entry(ref MIB_TCP6ROW_OWNER_MODULE pTcpEntry, TCPIP_OWNER_MODULE_INFO_CLASS Class, IntPtr Buffer, ref uint pdwSize);