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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 Pablo Rincon Crespo <pablo.rincon.crespo@gmail.com>
*
*/
#ifndef __UTIL_SPM_BM__
#define __UTIL_SPM_BM__
#include "suricata-common.h"
#define ALPHABET_SIZE 256
/* Context for boyer moore */
typedef struct BmCtx_ {
uint16_t bmBc[ALPHABET_SIZE];
//C99 "flexible array member"
uint16_t bmGs[]; // = SCMalloc(sizeof(int16_t)*(needlelen + 1));
} BmCtx;
/** Prepare and return a Boyer Moore context */
BmCtx *BoyerMooreCtxInit(const uint8_t *needle, uint16_t needle_len);
BmCtx *BoyerMooreNocaseCtxInit(uint8_t *needle, uint16_t needle_len);
void BoyerMooreCtxToNocase(BmCtx *, uint8_t *, uint16_t);
uint8_t *BoyerMoore(const uint8_t *x, uint16_t m, const uint8_t *y, uint32_t n, BmCtx *bm_ctx);
uint8_t *BoyerMooreNocase(const uint8_t *x, uint16_t m, const uint8_t *y, uint32_t n, BmCtx *bm_ctx);
void BoyerMooreCtxDeInit(BmCtx *);
void SpmBMRegister(void);
#endif /* __UTIL_SPM_BM__ */
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