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/* Copyright (C) 2007-2010 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 __UTIL_MPM_WUMANBER_H__
#define __UTIL_MPM_WUMANBER_H__
#include "util-mpm.h"
#include "util-bloomfilter.h"
//#define WUMANBER_COUNTERS
typedef struct WmPattern_ {
uint8_t *cs; /* case sensitive */
uint8_t *ci; /* case INsensitive */
uint16_t len;
struct WmPattern_ *next;
uint16_t prefix_ci;
uint16_t prefix_cs;
uint8_t flags;
uint32_t id; /* global pattern id */
/* sid(s) for this pattern */
uint32_t sids_size;
SigIntId *sids;
} WmPattern;
typedef struct WmHashItem_ {
uint8_t flags;
uint16_t idx;
struct WmHashItem_ *nxt;
} WmHashItem;
typedef struct WmCtx_ {
/* hash used during ctx initialization */
WmPattern **init_hash;
uint16_t shiftlen;
uint32_t hash_size;
WmHashItem **hash;
BloomFilter **bloom;
uint8_t *pminlen; /* array containing the minimal length
of the patters in a hash bucket. Used
for the BloomFilter. */
WmHashItem hash1[256];
/* we store our own search func ptr here for WmSearch1 */
uint32_t (*Search)(struct MpmCtx_ *, struct MpmThreadCtx_ *, PatternMatcherQueue *, uint8_t *, uint16_t);
/* we store our own multi byte search func ptr here for WmSearch1 */
uint32_t (*MBSearch)(struct MpmCtx_ *, struct MpmThreadCtx_ *, PatternMatcherQueue *, uint8_t *, uint16_t);
/* pattern arrays */
WmPattern **parray;
/* only used for multibyte pattern search */
uint16_t *shifttable;
} WmCtx;
typedef struct WmThreadCtx_ {
#ifdef WUMANBER_COUNTERS
uint32_t stat_pminlen_calls;
uint32_t stat_pminlen_total;
uint32_t stat_bloom_calls;
uint32_t stat_bloom_hits;
uint32_t stat_shift_null;
uint32_t stat_loop_match;
uint32_t stat_loop_no_match;
uint32_t stat_num_shift;
uint32_t stat_total_shift;
#endif /* WUMANBER_COUNTERS */
} WmThreadCtx;
void MpmWuManberRegister(void);
#endif /* __UTIL_MPM_WUMANBER_H__ */
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