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/* Copyright (C) 2018 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/**
*
* \file
*
* \author Jacob Masen-Smith <jacob@evengx.com>
*
*/
#ifndef __SOURCE_WINDIVERT_H__
#define __SOURCE_WINDIVERT_H__
#ifdef WINDIVERT
#include "windivert.h"
#define WINDIVERT_FILTER_MAXLEN 128 /* from windivert_device.h */
typedef void *WinDivertHandle;
/**
* \brief WinDivertQueueVars is the queue configuration and other miscellaneous
* information about the specific queue/filter.
*
* see https://reqrypt.org/windivert-doc.html#divert_open for more info
*/
typedef struct WinDivertQueueVars_
{
int queue_num;
/* see https://reqrypt.org/windivert-doc.html#filter_language */
char filter_str[WINDIVERT_FILTER_MAXLEN + 1];
WINDIVERT_LAYER layer;
int16_t priority;
uint64_t flags;
WinDivertHandle filter_handle;
/* only needed for setup/teardown; Recv/Send are internally synchronized */
SCMutex filter_init_mutex;
/* counters */
uint32_t pkts;
uint64_t bytes;
uint32_t errs;
uint32_t accepted;
uint32_t dropped;
uint32_t replaced;
SCMutex counters_mutex;
} WinDivertQueueVars;
typedef struct WinDivertPacketVars_
{
int thread_num;
WINDIVERT_ADDRESS addr;
bool verdicted;
} WinDivertPacketVars;
int WinDivertRegisterQueue(bool forward, char *filter_str);
void *WinDivertGetThread(int thread);
void *WinDivertGetQueue(int queue);
void SourceWinDivertRegisterTests(void);
#endif /* WINDIVERT */
#endif /* __SOURCE_WINDIVERT_H__ */
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