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- /*
- * 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
-
- #if __GNUC__ >=3
- #pragma GCC system_header
- #endif
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- #include "ntddk.h"
-
- #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 STDCALL
- (*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 */
-