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55 lines
1.9 KiB
C
55 lines
1.9 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 Pablo Rincon Crespo <pablo.rincon.crespo@gmail.com>
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*
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*/
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#ifndef __UTIL_SPM_BM__
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#define __UTIL_SPM_BM__
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#include "suricata-common.h"
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#include "suricata.h"
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#define ALPHABET_SIZE 256
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/* Context for booyer moore */
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typedef struct BmCtx_ {
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uint16_t bmBc[ALPHABET_SIZE];
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uint16_t *bmGs; // = SCMalloc(sizeof(int32_t)*(needlelen + 1));
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} BmCtx;
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/** Prepare and return a Boyer Moore context */
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BmCtx *BoyerMooreCtxInit(uint8_t *needle, uint16_t needle_len);
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void BoyerMooreCtxToNocase(BmCtx *, uint8_t *, uint16_t);
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void PreBmBc(const uint8_t *x, uint16_t m, uint16_t *bmBc);
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void BoyerMooreSuffixes(const uint8_t *x, uint16_t m, uint16_t *suff);
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int PreBmGs(const uint8_t *, uint16_t, uint16_t *);
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uint8_t *BoyerMoore(uint8_t *x, uint16_t m, uint8_t *y, int32_t n, uint16_t *bmGs, uint16_t *bmBc);
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void PreBmBcNocase(const uint8_t *x, uint16_t m, uint16_t *bmBc);
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void BoyerMooreSuffixesNocase(const uint8_t *x, uint16_t m, uint16_t *suff);
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void PreBmGsNocase(const uint8_t *x, uint16_t m, uint16_t *bmGs);
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uint8_t *BoyerMooreNocase(uint8_t *x, uint16_t m, uint8_t *y, int32_t n, uint16_t *bmGs, uint16_t *bmBc);
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void BoyerMooreCtxDeInit(BmCtx *);
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#endif /* __UTIL_SPM_BM__ */
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