suricata
datasets-sha256.c
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1 /* Copyright (C) 2017-2019 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 #include "suricata-common.h"
25 #include "conf.h"
26 #include "datasets.h"
27 #include "datasets-sha256.h"
28 #include "util-thash.h"
29 #include "util-print.h"
30 #include "util-base64.h" // decode base64
31 
32 int Sha256StrSet(void *dst, void *src)
33 {
34  Sha256Type *src_s = src;
35  Sha256Type *dst_s = dst;
36  memcpy(dst_s->sha256, src_s->sha256, sizeof(dst_s->sha256));
37  dst_s->rep = src_s->rep;
38  return 0;
39 }
40 
41 bool Sha256StrCompare(void *a, void *b)
42 {
43  Sha256Type *as = a;
44  Sha256Type *bs = b;
45 
46  return (memcmp(as->sha256, bs->sha256, sizeof(as->sha256)) == 0);
47 }
48 
49 uint32_t Sha256StrHash(void *s)
50 {
51  Sha256Type *str = s;
52  uint32_t hash = 5381;
53 
54  for (int i = 0; i < (int)sizeof(str->sha256); i++) {
55  hash = ((hash << 5) + hash) + str->sha256[i]; /* hash * 33 + c */
56  }
57  return hash;
58 }
59 
60 // data stays in hash
61 void Sha256StrFree(void *s)
62 {
63  // no dynamic data
64 }
datasets-sha256.h
Sha256Type::sha256
uint8_t sha256[32]
Definition: datasets-sha256.h:30
util-base64.h
Sha256Type::rep
DataRepType rep
Definition: datasets-sha256.h:31
datasets.h
util-print.h
Sha256StrSet
int Sha256StrSet(void *dst, void *src)
Definition: datasets-sha256.c:32
conf.h
Sha256StrHash
uint32_t Sha256StrHash(void *s)
Definition: datasets-sha256.c:49
Sha256Type
Definition: datasets-sha256.h:29
Sha256StrFree
void Sha256StrFree(void *s)
Definition: datasets-sha256.c:61
suricata-common.h
str
#define str(s)
Definition: suricata-common.h:272
Sha256StrCompare
bool Sha256StrCompare(void *a, void *b)
Definition: datasets-sha256.c:41
src
uint16_t src
Definition: app-layer-dnp3.h:5
dst
uint16_t dst
Definition: app-layer-dnp3.h:4
util-thash.h