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93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
/* Copyright (C) 2007-2010 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Victor Julien <victor@inliniac.net>
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*/
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#ifndef __UTIL_MPM_WUMANBER_H__
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#define __UTIL_MPM_WUMANBER_H__
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#include "util-mpm.h"
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#include "util-bloomfilter.h"
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//#define WUMANBER_COUNTERS
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typedef struct WmPattern_ {
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uint8_t *cs; /* case sensitive */
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uint8_t *ci; /* case INsensitive */
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uint16_t len;
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struct WmPattern_ *next;
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uint16_t prefix_ci;
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uint16_t prefix_cs;
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uint8_t flags;
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uint32_t id; /* global pattern id */
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} WmPattern;
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typedef struct WmHashItem_ {
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uint8_t flags;
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uint16_t idx;
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struct WmHashItem_ *nxt;
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} WmHashItem;
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typedef struct WmCtx_ {
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/* hash used during ctx initialization */
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WmPattern **init_hash;
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uint16_t shiftlen;
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uint32_t hash_size;
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WmHashItem **hash;
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BloomFilter **bloom;
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uint8_t *pminlen; /* array containing the minimal length
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of the patters in a hash bucket. Used
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for the BloomFilter. */
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WmHashItem hash1[256];
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/* we store our own search func ptr here for WmSearch1 */
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uint32_t (*Search)(struct MpmCtx_ *, struct MpmThreadCtx_ *, PatternMatcherQueue *, uint8_t *, uint16_t);
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/* we store our own multi byte search func ptr here for WmSearch1 */
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uint32_t (*MBSearch)(struct MpmCtx_ *, struct MpmThreadCtx_ *, PatternMatcherQueue *, uint8_t *, uint16_t);
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/* pattern arrays */
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WmPattern **parray;
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/* only used for multibyte pattern search */
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uint16_t *shifttable;
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} WmCtx;
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typedef struct WmThreadCtx_ {
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#ifdef WUMANBER_COUNTERS
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uint32_t stat_pminlen_calls;
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uint32_t stat_pminlen_total;
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uint32_t stat_bloom_calls;
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uint32_t stat_bloom_hits;
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uint32_t stat_shift_null;
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uint32_t stat_loop_match;
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uint32_t stat_loop_no_match;
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uint32_t stat_num_shift;
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uint32_t stat_total_shift;
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#endif /* WUMANBER_COUNTERS */
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} WmThreadCtx;
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void MpmWuManberRegister(void);
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#endif /* __UTIL_MPM_WUMANBER_H__ */
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