diff options
Diffstat (limited to 'framework/src/suricata/src/util-mpm-ac-bs.h')
-rw-r--r-- | framework/src/suricata/src/util-mpm-ac-bs.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/framework/src/suricata/src/util-mpm-ac-bs.h b/framework/src/suricata/src/util-mpm-ac-bs.h new file mode 100644 index 00000000..a66757e7 --- /dev/null +++ b/framework/src/suricata/src/util-mpm-ac-bs.h @@ -0,0 +1,101 @@ +/* Copyright (C) 2007-2014 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 <anoopsaldanha@gmail.com> + * + */ + +#define SC_AC_BS_STATE_TYPE_U16 uint16_t +#define SC_AC_BS_STATE_TYPE_U32 uint32_t + +typedef struct SCACBSPattern_ { + /* 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; + + /* sid(s) for this pattern */ + uint32_t sids_size; + SigIntId *sids; + + struct SCACBSPattern_ *next; +} SCACBSPattern; + +typedef struct SCACBSPatternList_ { + uint8_t *cs; + uint16_t patlen; + + /* sid(s) for this pattern */ + uint32_t sids_size; + SigIntId *sids; +} SCACBSPatternList; + +typedef struct SCACBSOutputTable_ { + /* list of pattern sids */ + uint32_t *pids; + /* no of entries we have in pids */ + uint32_t no_of_entries; +} SCACBSOutputTable; + +typedef struct SCACBSCtx_ { + /* hash used during ctx initialization */ + SCACBSPattern **init_hash; + + /* pattern arrays. We need this only during the goto table creation phase */ + SCACBSPattern **parray; + + /* no of states used by ac */ + uint32_t state_count; + /* the all important memory hungry state_table */ + SC_AC_BS_STATE_TYPE_U16 (*state_table_u16)[256]; + /* the all important memory hungry state_table */ + SC_AC_BS_STATE_TYPE_U32 (*state_table_u32)[256]; + /* the modified goto_table */ + uint8_t *state_table_mod; + uint8_t **state_table_mod_pointers; + + /* 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; + SCACBSOutputTable *output_table; + SCACBSPatternList *pid_pat_list; + + /* the size of each state */ + uint16_t single_state_size; + uint16_t max_pat_id; +} SCACBSCtx; + +typedef struct SCACBSThreadCtx_ { + /* 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; +} SCACBSThreadCtx; + +void MpmACBSRegister(void); |