sp_ip_fragbits.c File Reference

#include <sys/types.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include "rules.h"
#include "plugbase.h"
#include "decode.h"
#include "parser.h"
#include "debug.h"
#include "util.h"
#include "plugin_enum.h"

Go to the source code of this file.

Defines
#define	GREATER_THAN   1
#define	LESS_THAN   2
#define	FB_NORMAL   0
#define	FB_ALL   1
#define	FB_ANY   2
#define	FB_NOT   3
#define	FB_RB   0x8000
#define	FB_DF   0x4000
#define	FB_MF   0x2000
Typedefs
typedef _FragBitsData	FragBitsData
typedef _FragOffsetData	FragOffsetData
Functions
void	FragBitsInit (char *, OptTreeNode *, int)
void	ParseFragBits (char *, OptTreeNode *)
int	CheckFragBits (Packet *, struct _OptTreeNode *, OptFpList *)
void	FragOffsetInit (char *, OptTreeNode *, int)
void	ParseFragOffset (char *, OptTreeNode *)
int	CheckFragOffset (Packet *, struct _OptTreeNode *, OptFpList *)
void	SetupFragBits (void)
void	SetupFragOffset (void)
Variables
static u_int16_t	bitmask

---

Define Documentation

#define FB_ALL   1

Definition at line 68 of file sp_ip_fragbits.c. Referenced by CheckFragBits(), and ParseFragBits().

#define FB_ANY   2

Definition at line 69 of file sp_ip_fragbits.c. Referenced by CheckFragBits(), and ParseFragBits().

#define FB_DF   0x4000

Definition at line 73 of file sp_ip_fragbits.c. Referenced by ParseFragBits().

#define FB_MF   0x2000

Definition at line 74 of file sp_ip_fragbits.c. Referenced by ParseFragBits().

#define FB_NORMAL   0

Definition at line 67 of file sp_ip_fragbits.c. Referenced by CheckFragBits(), and ParseFragBits().

#define FB_NOT   3

Definition at line 70 of file sp_ip_fragbits.c. Referenced by CheckFragBits(), and ParseFragBits().

#define FB_RB   0x8000

Definition at line 72 of file sp_ip_fragbits.c. Referenced by ParseFragBits().

#define GREATER_THAN   1

Definition at line 63 of file sp_ip_fragbits.c. Referenced by CheckFragOffset(), fpCreateFastPacketDetection(), IpProtoDetectorFunction(), IpProtoRuleParseFunction(), and ParseFragOffset().

#define LESS_THAN   2

Definition at line 64 of file sp_ip_fragbits.c. Referenced by fpCreateFastPacketDetection(), IpProtoRuleParseFunction(), and ParseFragOffset().

---

Typedef Documentation

typedef struct _FragBitsData FragBitsData

typedef struct _FragOffsetData FragOffsetData

---

Function Documentation

int CheckFragBits (  Packet *  , struct _OptTreeNode *  , OptFpList *  )

Definition at line 268 of file sp_ip_fragbits.c. References bitmask, DEBUG_PLUGIN, DEBUG_WRAP, _OptTreeNode::ds_list, FB_ALL, FB_ANY, FB_NORMAL, FB_NOT, _FragBitsData::frag_bits, _IPHdr::ip_off, _Packet::iph, _FragBitsData::mode, _OptFpList::next, _OptFpList::OptTestFunc, and PLUGIN_FRAG_BITS. Referenced by FragBitsInit().

int CheckFragOffset (  Packet *  , struct _OptTreeNode *  , OptFpList *  )

Definition at line 469 of file sp_ip_fragbits.c. References _FragOffsetData::comparison_flag, DEBUG_PLUGIN, DEBUG_WRAP, _OptTreeNode::ds_list, _Packet::frag_flag, _Packet::frag_offset, GREATER_THAN, IP_HEADER_LEN, _IPHdr::ip_len, _Packet::iph, _OptFpList::next, _FragOffsetData::not_flag, _FragOffsetData::offset, _OptFpList::OptTestFunc, and PLUGIN_FRAG_OFFSET. Referenced by FragOffsetInit().

void FragBitsInit (  char *  , OptTreeNode *  , int  )

Definition at line 138 of file sp_ip_fragbits.c. References AddOptFuncToList(), bitmask, CheckFragBits(), _OptTreeNode::ds_list, FatalError(), file_line, file_name, ParseFragBits(), PLUGIN_FRAG_BITS, and SnortAlloc(). Referenced by SetupFragBits().

void FragOffsetInit (  char *  , OptTreeNode *  , int  )

Definition at line 375 of file sp_ip_fragbits.c. References AddOptFuncToList(), CheckFragOffset(), _OptTreeNode::ds_list, ParseFragOffset(), and PLUGIN_FRAG_OFFSET. Referenced by SetupFragOffset().

void ParseFragBits (  char *  , OptTreeNode *  )

Definition at line 182 of file sp_ip_fragbits.c. References _OptTreeNode::ds_list, FatalError(), FB_ALL, FB_ANY, FB_DF, FB_MF, FB_NORMAL, FB_NOT, FB_RB, file_line, file_name, _FragBitsData::frag_bits, _FragBitsData::mode, and PLUGIN_FRAG_BITS. Referenced by FragBitsInit().

void ParseFragOffset (  char *  , OptTreeNode *  )

Definition at line 405 of file sp_ip_fragbits.c. References _FragOffsetData::comparison_flag, _OptTreeNode::ds_list, FatalError(), file_line, file_name, GREATER_THAN, LESS_THAN, _FragOffsetData::not_flag, _FragOffsetData::offset, and PLUGIN_FRAG_OFFSET. Referenced by FragOffsetInit().

void SetupFragBits (  void   )

Definition at line 116 of file sp_ip_fragbits.c. References DEBUG_PLUGIN, DEBUG_WRAP, FragBitsInit(), and RegisterPlugin(). Referenced by InitPlugIns().

void SetupFragOffset (  void   )

Definition at line 354 of file sp_ip_fragbits.c. References DEBUG_PLUGIN, DEBUG_WRAP, FragOffsetInit(), and RegisterPlugin(). Referenced by InitPlugIns().

---

Variable Documentation

u_int16_t bitmask [static]

Definition at line 103 of file sp_ip_fragbits.c. Referenced by CheckFragBits(), and FragBitsInit().

---