1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/* 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 Pablo Rincon <pablo.rincon.crespo@gmail.com>
*/
#ifndef __DETECT_FLOWINT_H__
#define __DETECT_FLOWINT_H__
/** Flowint operations allowed */
enum {
/** Changing integer values */
FLOWINT_MODIFIER_SET,
FLOWINT_MODIFIER_ADD,
FLOWINT_MODIFIER_SUB,
/** Comparing integer values */
FLOWINT_MODIFIER_LT,
FLOWINT_MODIFIER_LE,
FLOWINT_MODIFIER_EQ,
FLOWINT_MODIFIER_NE,
FLOWINT_MODIFIER_GE,
FLOWINT_MODIFIER_GT,
/** Checking if a var is set (keyword isset/notset)*/
FLOWINT_MODIFIER_ISSET,
FLOWINT_MODIFIER_NOTSET,
FLOWINT_MODIFIER_UNKNOWN
};
/** The target can be a value, or another variable already declared */
enum {
FLOWINT_TARGET_VAL,
FLOWINT_TARGET_VAR,
FLOWINT_TARGET_SELF,
};
/** If the target is another var, get the name and the idx */
typedef struct TargetVar_ {
char *name;
} TargetVar;
/** Context data for flowint vars */
typedef struct DetectFlowintData_ {
/* This is the main var we are going to use
* against the target */
char *name;
/* Internal id of the var */
uint32_t idx;
/* The modifier/operation/condition we are
* going to execute */
uint8_t modifier;
uint8_t targettype;
union {
/* the target value */
uint32_t value;
/* or the target var */
TargetVar tvar;
} target;
} DetectFlowintData;
/* prototypes */
void DetectFlowintRegister (void);
#endif /* __DETECT_FLOWINT_H__ */
|
