/src/suricata7/src/detect-dsize.h
Line | Count | Source |
1 | | /* Copyright (C) 2007-2022 Open Information Security Foundation |
2 | | * |
3 | | * You can copy, redistribute or modify this Program under the terms of |
4 | | * the GNU General Public License version 2 as published by the Free |
5 | | * Software Foundation. |
6 | | * |
7 | | * This program is distributed in the hope that it will be useful, |
8 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
9 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
10 | | * GNU General Public License for more details. |
11 | | * |
12 | | * You should have received a copy of the GNU General Public License |
13 | | * version 2 along with this program; if not, write to the Free Software |
14 | | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
15 | | * 02110-1301, USA. |
16 | | */ |
17 | | |
18 | | /** |
19 | | * \file |
20 | | * |
21 | | * \author Victor Julien <victor@inliniac.net> |
22 | | */ |
23 | | |
24 | | #ifndef __DETECT_DSIZE_H__ |
25 | | #define __DETECT_DSIZE_H__ |
26 | | |
27 | | #include "detect-engine-uint.h" |
28 | | |
29 | | /* prototypes */ |
30 | | void DetectDsizeRegister (void); |
31 | | |
32 | | int SigParseMaxRequiredDsize(const Signature *s); |
33 | | int SigParseGetMaxDsize(const Signature *s); |
34 | | void SigParseSetDsizePair(Signature *s); |
35 | | void SigParseApplyDsizeToContent(Signature *s); |
36 | | |
37 | | /** Determine if a packet p should be kicked out during prefilter due |
38 | | * to dsize outside the range specified in signature s */ |
39 | | static inline bool SigDsizePrefilter(const Packet *p, const Signature *s, uint32_t sflags) |
40 | 2.43M | { |
41 | 2.43M | if (unlikely(sflags & SIG_FLAG_DSIZE)) { |
42 | 27.8k | if (likely(p->payload_len < s->dsize_low || p->payload_len > s->dsize_high)) { |
43 | 7.60k | if (!(s->dsize_mode == DETECT_UINT_NE)) { |
44 | 6.30k | SCLogDebug("kicked out as p->payload_len %u, dsize low %u, hi %u", p->payload_len, |
45 | 6.30k | s->dsize_low, s->dsize_high); |
46 | 6.30k | return true; |
47 | 6.30k | } |
48 | 7.60k | } |
49 | 27.8k | } |
50 | 2.43M | return false; |
51 | 2.43M | } Unexecuted instantiation: detect-content.c:SigDsizePrefilter Unexecuted instantiation: detect-dsize.c:SigDsizePrefilter Unexecuted instantiation: detect-engine-build.c:SigDsizePrefilter Unexecuted instantiation: detect-engine-register.c:SigDsizePrefilter detect.c:SigDsizePrefilter Line | Count | Source | 40 | 2.43M | { | 41 | 2.43M | if (unlikely(sflags & SIG_FLAG_DSIZE)) { | 42 | 27.8k | if (likely(p->payload_len < s->dsize_low || p->payload_len > s->dsize_high)) { | 43 | 7.60k | if (!(s->dsize_mode == DETECT_UINT_NE)) { | 44 | 6.30k | SCLogDebug("kicked out as p->payload_len %u, dsize low %u, hi %u", p->payload_len, | 45 | 6.30k | s->dsize_low, s->dsize_high); | 46 | 6.30k | return true; | 47 | 6.30k | } | 48 | 7.60k | } | 49 | 27.8k | } | 50 | 2.43M | return false; | 51 | 2.43M | } |
|
52 | | |
53 | | #endif /* __DETECT_DSIZE_H__ */ |
54 | | |