| /* |
| * pfhook.h |
| * |
| * Packet filter API |
| * |
| * This file is part of the w32api package. |
| * |
| * Contributors: |
| * Created by Casper S. Hornstrup <chorns@users.sourceforge.net> |
| * |
| * THIS SOFTWARE IS NOT COPYRIGHTED |
| * |
| * This source code is offered for use in the public domain. You may |
| * use, modify or distribute it freely. |
| * |
| * This code is distributed in the hope that it will be useful but |
| * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY |
| * DISCLAIMED. This includes but is not limited to warranties of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| */ |
| |
| #ifndef __PFHOOK_H |
| #define __PFHOOK_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #define DD_IPFLTRDRVR_DEVICE_NAME L"\\Device\\IPFILTERDRIVER" |
| |
| #define INVALID_PF_IF_INDEX 0xffffffff |
| #define ZERO_PF_IP_ADDR 0 |
| |
| typedef ULONG IPAddr; |
| |
| typedef enum _PF_FORWARD_ACTION { |
| PF_FORWARD = 0, |
| PF_DROP = 1, |
| PF_PASS = 2, |
| PF_ICMP_ON_DROP = 3 |
| } PF_FORWARD_ACTION; |
| |
| typedef PF_FORWARD_ACTION |
| (NTAPI *PacketFilterExtensionPtr)( |
| IN unsigned char *PacketHeader, |
| IN unsigned char *Packet, |
| IN unsigned int PacketLength, |
| IN unsigned int RecvInterfaceIndex, |
| IN unsigned int SendInterfaceIndex, |
| IN IPAddr RecvLinkNextHop, |
| IN IPAddr SendLinkNextHop); |
| |
| typedef struct _PF_SET_EXTENSION_HOOK_INFO { |
| PacketFilterExtensionPtr ExtensionPointer; |
| } PF_SET_EXTENSION_HOOK_INFO, *PPF_SET_EXTENSION_HOOK_INFO; |
| |
| #define FSCTL_IPFLTRDRVR_BASE FILE_DEVICE_NETWORK |
| |
| #define _IPFLTRDRVR_CTL_CODE(function, method, access) \ |
| CTL_CODE(FSCTL_IPFLTRDRVR_BASE, function, method, access) |
| |
| #define IOCTL_PF_SET_EXTENSION_POINTER \ |
| _IPFLTRDRVR_CTL_CODE(22, METHOD_BUFFERED, FILE_WRITE_ACCESS) |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* __PFHOOK_H */ |
