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author | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:21:41 -0700 |
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committer | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:21:41 -0700 |
commit | 8879b125d26e8db1a5633de5a9c692eb2d1c4f83 (patch) | |
tree | c7259d85a991b83dfa85ab2e339360669fc1f58e /framework/src/suricata/src/detect-content.h | |
parent | 13d05bc8458758ee39cb829098241e89616717ee (diff) |
suricata checkin based on commit id a4bce14770beee46a537eda3c3f6e8e8565d5d0a
Change-Id: I9a214fa0ee95e58fc640e50bd604dac7f42db48f
Diffstat (limited to 'framework/src/suricata/src/detect-content.h')
-rw-r--r-- | framework/src/suricata/src/detect-content.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/framework/src/suricata/src/detect-content.h b/framework/src/suricata/src/detect-content.h new file mode 100644 index 00000000..b2e0f969 --- /dev/null +++ b/framework/src/suricata/src/detect-content.h @@ -0,0 +1,102 @@ +/* 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 Victor Julien <victor@inliniac.net> + */ + +#ifndef __DETECT_CONTENT_H__ +#define __DETECT_CONTENT_H__ + +/* Flags affecting this content */ + +#define DETECT_CONTENT_NOCASE (1) +#define DETECT_CONTENT_DISTANCE (1 << 1) +#define DETECT_CONTENT_WITHIN (1 << 2) +#define DETECT_CONTENT_OFFSET (1 << 3) +#define DETECT_CONTENT_DEPTH (1 << 4) +#define DETECT_CONTENT_FAST_PATTERN (1 << 5) +#define DETECT_CONTENT_FAST_PATTERN_ONLY (1 << 6) +#define DETECT_CONTENT_FAST_PATTERN_CHOP (1 << 7) +/** content applies to a "raw"/undecoded field if applicable */ +#define DETECT_CONTENT_RAWBYTES (1 << 8) +/** content is negated */ +#define DETECT_CONTENT_NEGATED (1 << 9) + +/** a relative match to this content is next, used in matching phase */ +#define DETECT_CONTENT_RELATIVE_NEXT (1 << 10) + +/* BE - byte extract */ +#define DETECT_CONTENT_OFFSET_BE (1 << 11) +#define DETECT_CONTENT_DEPTH_BE (1 << 12) +#define DETECT_CONTENT_DISTANCE_BE (1 << 13) +#define DETECT_CONTENT_WITHIN_BE (1 << 14) + +/* replace data */ +#define DETECT_CONTENT_REPLACE (1 << 15) +/* this flag is set during the staging phase. It indicates that a content + * has been added to the mpm phase and requires no further inspection inside + * the inspection phase */ +#define DETECT_CONTENT_NO_DOUBLE_INSPECTION_REQUIRED (1 << 16) + +#define DETECT_CONTENT_IS_SINGLE(c) (!( ((c)->flags & DETECT_CONTENT_DISTANCE) || \ + ((c)->flags & DETECT_CONTENT_WITHIN) || \ + ((c)->flags & DETECT_CONTENT_RELATIVE_NEXT) || \ + ((c)->flags & DETECT_CONTENT_DEPTH) || \ + ((c)->flags & DETECT_CONTENT_OFFSET) )) + +#include "util-spm-bm.h" + +typedef struct DetectContentData_ { + uint8_t *content; + uint16_t content_len; + uint16_t replace_len; + /* for chopped fast pattern, the length */ + uint16_t fp_chop_len; + /* would want to move PatIntId here and flags down to remove the padding + * gap, but I think the first four members was used as a template for + * casting. \todo check this and fix it if posssible */ + uint32_t flags; + PatIntId id; + uint16_t depth; + uint16_t offset; + /* for chopped fast pattern, the offset */ + uint16_t fp_chop_offset; + int32_t distance; + int32_t within; + /* Boyer Moore context (for spm search) */ + BmCtx *bm_ctx; + /* pointer to replacement data */ + uint8_t *replace; +} DetectContentData; + +/* prototypes */ +void DetectContentRegister (void); +uint32_t DetectContentMaxId(DetectEngineCtx *); +DetectContentData *DetectContentParse (char *contentstr); +int DetectContentDataParse(const char *keyword, const char *contentstr, + uint8_t **pstr, uint16_t *plen, uint32_t *flags); +DetectContentData *DetectContentParseEncloseQuotes(char *); + +int DetectContentSetup(DetectEngineCtx *de_ctx, Signature *s, char *contentstr); +void DetectContentPrint(DetectContentData *); + +void DetectContentFree(void *); + +#endif /* __DETECT_CONTENT_H__ */ |