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90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/* Copyright (C) 2007-2014 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 Anoop Saldanha <anoopsaldanha@gmail.com>
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*
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*/
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#ifndef __UTIL_MPM_AC__H__
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#define __UTIL_MPM_AC__H__
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#include "util-mpm.h"
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#define SC_AC_STATE_TYPE_U16 uint16_t
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#define SC_AC_STATE_TYPE_U32 uint32_t
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typedef struct SCACPatternList_ {
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uint8_t *cs;
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uint16_t patlen;
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uint16_t offset;
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uint16_t depth;
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/* sid(s) for this pattern */
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uint32_t sids_size;
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SigIntId *sids;
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} SCACPatternList;
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typedef struct SCACOutputTable_ {
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/* list of pattern sids */
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uint32_t *pids;
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/* no of entries we have in pids */
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uint32_t no_of_entries;
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} SCACOutputTable;
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typedef struct SCACCtx_ {
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/* pattern arrays. We need this only during the goto table creation phase */
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MpmPattern **parray;
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/* no of states used by ac */
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uint32_t state_count;
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uint32_t pattern_id_bitarray_size;
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/* the all important memory hungry state_table */
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SC_AC_STATE_TYPE_U16 (*state_table_u16)[256];
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/* the all important memory hungry state_table */
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SC_AC_STATE_TYPE_U32 (*state_table_u32)[256];
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/* goto_table, failure table and output table. Needed to create state_table.
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* Will be freed, once we have created the state_table */
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int32_t (*goto_table)[256];
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int32_t *failure_table;
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SCACOutputTable *output_table;
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SCACPatternList *pid_pat_list;
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/* the size of each state */
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uint32_t single_state_size;
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uint32_t allocated_state_count;
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} SCACCtx;
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typedef struct SCACThreadCtx_ {
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/* the total calls we make to the search function */
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uint32_t total_calls;
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/* the total patterns that we ended up matching against */
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uint64_t total_matches;
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} SCACThreadCtx;
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void MpmACRegister(void);
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#endif /* __UTIL_MPM_AC__H__ */
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