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/* Copyright (C) 2016 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 Victor Julien <victor@inliniac.net>
*/
#ifndef __DETECT_ENGINE_PREFILTER_H__
#define __DETECT_ENGINE_PREFILTER_H__
#include "detect.h"
#include "detect-engine-state.h"
// TODO
typedef struct DetectTransaction_ {
void *tx_ptr;
const uint64_t tx_id;
struct AppLayerTxData *tx_data_ptr;
DetectEngineStateDirection *de_state;
const uint64_t detect_flags; /* detect flags get/set from/to applayer */
uint64_t prefilter_flags; /* prefilter flags for direction, to be updated by prefilter code */
const uint64_t
prefilter_flags_orig; /* prefilter flags for direction, before prefilter has run */
const int tx_progress;
const int tx_end_state;
} DetectTransaction;
typedef struct PrefilterStore_ {
const char *name;
void (*FreeFunc)(void *);
uint32_t id;
} PrefilterStore;
void Prefilter(DetectEngineThreadCtx *, const SigGroupHead *, Packet *p,
const uint8_t flags);
int PrefilterAppendEngine(DetectEngineCtx *de_ctx, SigGroupHead *sgh,
void (*Prefilter)(DetectEngineThreadCtx *det_ctx, Packet *p, const void *pectx),
void *pectx, void (*FreeFunc)(void *pectx),
const char *name);
int PrefilterAppendPayloadEngine(DetectEngineCtx *de_ctx, SigGroupHead *sgh,
void (*Prefilter)(DetectEngineThreadCtx *det_ctx, Packet *p, const void *pectx),
void *pectx, void (*FreeFunc)(void *pectx),
const char *name);
int PrefilterAppendTxEngine(DetectEngineCtx *de_ctx, SigGroupHead *sgh,
PrefilterTxFn PrefilterTxFunc, const AppProto alproto, const int tx_min_progress,
void *pectx, void (*FreeFunc)(void *pectx), const char *name);
int PrefilterAppendFrameEngine(DetectEngineCtx *de_ctx, SigGroupHead *sgh,
PrefilterFrameFn PrefilterFrameFunc, AppProto alproto, uint8_t frame_type, void *pectx,
void (*FreeFunc)(void *pectx), const char *name);
void DetectRunPrefilterTx(DetectEngineThreadCtx *det_ctx,
const SigGroupHead *sgh,
Packet *p,
const uint8_t ipproto,
const uint8_t flow_flags,
const AppProto alproto,
void *alstate,
DetectTransaction *tx);
void PrefilterFreeEnginesList(PrefilterEngineList *list);
void PrefilterSetupRuleGroup(DetectEngineCtx *de_ctx, SigGroupHead *sgh);
void PrefilterCleanupRuleGroup(const DetectEngineCtx *de_ctx, SigGroupHead *sgh);
#ifdef PROFILING
const char *PrefilterStoreGetName(const uint32_t id);
#endif
void PrefilterInit(DetectEngineCtx *de_ctx);
void PrefilterDeinit(DetectEngineCtx *de_ctx);
int PrefilterGenericMpmRegister(DetectEngineCtx *de_ctx, SigGroupHead *sgh, MpmCtx *mpm_ctx,
const DetectBufferMpmRegistry *mpm_reg, int list_id);
int PrefilterGenericMpmPktRegister(DetectEngineCtx *de_ctx, SigGroupHead *sgh, MpmCtx *mpm_ctx,
const DetectBufferMpmRegistry *mpm_reg, int list_id);
#endif
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