mirror of https://github.com/OISF/suricata
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/* 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 Anoop Saldanha <poonaatsoc@gmail.com>
|
|
*
|
|
*/
|
|
|
|
#define SC_AC_STATE_TYPE_U16 uint16_t
|
|
#define SC_AC_STATE_TYPE_U32 uint32_t
|
|
|
|
typedef struct SCACPattern_ {
|
|
/* length of the pattern */
|
|
uint16_t len;
|
|
/* flags decribing the pattern */
|
|
uint8_t flags;
|
|
/* holds the original pattern that was added */
|
|
uint8_t *original_pat;
|
|
/* case sensitive */
|
|
uint8_t *cs;
|
|
/* case INsensitive */
|
|
uint8_t *ci;
|
|
/* pattern id */
|
|
uint32_t id;
|
|
|
|
struct SCACPattern_ *next;
|
|
} SCACPattern;
|
|
|
|
typedef struct SCACPatternList_ {
|
|
uint8_t *cs;
|
|
uint16_t patlen;
|
|
uint16_t case_state;
|
|
} SCACPatternList;
|
|
|
|
typedef struct SCACOutputTable_ {
|
|
/* list of pattern sids */
|
|
uint32_t *pids;
|
|
/* no of entries we have in pids */
|
|
uint32_t no_of_entries;
|
|
} SCACOutputTable;
|
|
|
|
typedef struct SCACCtx_ {
|
|
/* hash used during ctx initialization */
|
|
SCACPattern **init_hash;
|
|
|
|
/* pattern arrays. We need this only during the goto table creation phase */
|
|
SCACPattern **parray;
|
|
|
|
/* no of states used by ac */
|
|
uint32_t state_count;
|
|
/* the all important memory hungry state_table */
|
|
SC_AC_STATE_TYPE_U16 (*state_table_u16)[256];
|
|
/* the all important memory hungry state_table */
|
|
SC_AC_STATE_TYPE_U32 (*state_table_u32)[256];
|
|
|
|
/* goto_table, failure table and output table. Needed to create state_table.
|
|
* Will be freed, once we have created the state_table */
|
|
int32_t (*goto_table)[256];
|
|
int32_t *failure_table;
|
|
SCACOutputTable *output_table;
|
|
SCACPatternList *pid_pat_list;
|
|
|
|
/* the size of each state */
|
|
uint16_t single_state_size;
|
|
uint16_t max_pat_id;
|
|
} SCACCtx;
|
|
|
|
typedef struct SCACThreadCtx_ {
|
|
/* the total calls we make to the search function */
|
|
uint32_t total_calls;
|
|
/* the total patterns that we ended up matching against */
|
|
uint64_t total_matches;
|
|
} SCACThreadCtx;
|
|
|
|
void MpmACRegister(void);
|