detect-byte-extract.c File Reference

#include "suricata-common.h"
#include "decode.h"
#include "detect.h"
#include "detect-engine.h"
#include "detect-content.h"
#include "detect-pcre.h"
#include "detect-bytejump.h"
#include "detect-bytetest.h"
#include "detect-byte-extract.h"
#include "detect-isdataat.h"
#include "detect-engine-build.h"
#include "rust.h"
#include "app-layer-protos.h"
#include "util-byte.h"
#include "util-debug.h"
#include "util-unittest.h"
#include "util-unittest-helper.h"
#include "detect-engine-buffer.h"

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Macros
#define	DETECT_BYTE_EXTRACT_BASE_HEX   BaseHex
#define	DETECT_BYTE_EXTRACT_BASE_DEC   BaseDec
#define	DETECT_BYTE_EXTRACT_BASE_OCT   BaseOct
#define	STRING_MAX_BYTES_TO_EXTRACT_FOR_OCT   23
#define	STRING_MAX_BYTES_TO_EXTRACT_FOR_DEC   20
#define	STRING_MAX_BYTES_TO_EXTRACT_FOR_HEX   14
#define	NO_STRING_MAX_BYTES_TO_EXTRACT   8

Functions
void	DetectByteExtractRegister (void)
	Registers the keyword handlers for the "byte_extract" keyword. More...
int	DetectByteExtractDoMatch (DetectEngineThreadCtx *det_ctx, const SigMatchData *smd, const Signature *s, const uint8_t *payload, uint32_t payload_len, uint64_t *value, uint8_t endian)
SigMatch *	DetectByteExtractRetrieveSMVar (const char *arg, int sm_list, const Signature *s)
	Lookup the SigMatch for a named byte_extract variable. More...

Detailed Description

Author

Anoop Saldanha anoop.nosp@m.sald.nosp@m.anha@.nosp@m.gmai.nosp@m.l.com

Definition in file detect-byte-extract.c.

Macro Definition Documentation

DETECT_BYTE_EXTRACT_BASE_DEC

#define DETECT_BYTE_EXTRACT_BASE_DEC   BaseDec

Definition at line 50 of file detect-byte-extract.c.

DETECT_BYTE_EXTRACT_BASE_HEX

#define DETECT_BYTE_EXTRACT_BASE_HEX   BaseHex

Definition at line 49 of file detect-byte-extract.c.

DETECT_BYTE_EXTRACT_BASE_OCT

#define DETECT_BYTE_EXTRACT_BASE_OCT   BaseOct

Definition at line 51 of file detect-byte-extract.c.

NO_STRING_MAX_BYTES_TO_EXTRACT

#define NO_STRING_MAX_BYTES_TO_EXTRACT   8

Definition at line 59 of file detect-byte-extract.c.

STRING_MAX_BYTES_TO_EXTRACT_FOR_DEC

#define STRING_MAX_BYTES_TO_EXTRACT_FOR_DEC   20

Definition at line 56 of file detect-byte-extract.c.

STRING_MAX_BYTES_TO_EXTRACT_FOR_HEX

#define STRING_MAX_BYTES_TO_EXTRACT_FOR_HEX   14

Definition at line 57 of file detect-byte-extract.c.

STRING_MAX_BYTES_TO_EXTRACT_FOR_OCT

#define STRING_MAX_BYTES_TO_EXTRACT_FOR_OCT   23

Definition at line 55 of file detect-byte-extract.c.

Function Documentation

DetectByteExtractDoMatch()

int DetectByteExtractDoMatch	(	DetectEngineThreadCtx *	det_ctx,
		const SigMatchData *	smd,
		const Signature *	s,
		const uint8_t *	payload,
		uint32_t	payload_len,
		uint64_t *	value,
		uint8_t	endian
	)

Definition at line 82 of file detect-byte-extract.c.

References DetectEngineThreadCtx_::buffer_offset, BYTE_BIG_ENDIAN, BYTE_LITTLE_ENDIAN, ByteExtractStringUint64(), ByteExtractUint64(), SigMatchData_::ctx, len, payload_len, and SCLogDebug.

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DetectByteExtractRegister()

void DetectByteExtractRegister

(

void

)

Registers the keyword handlers for the "byte_extract" keyword.

Definition at line 69 of file detect-byte-extract.c.

References SigTableElmt_::desc, DETECT_BYTE_EXTRACT, SigTableElmt_::Match, SigTableElmt_::name, SigTableElmt_::Setup, sigmatch_table, and SigTableElmt_::url.

Referenced by SigTableSetup().

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DetectByteExtractRetrieveSMVar()

SigMatch* DetectByteExtractRetrieveSMVar	(	const char *	arg,
		int	sm_list,
		const Signature *	s
	)

Lookup the SigMatch for a named byte_extract variable.

Parameters

arg	The name of the byte_extract variable to lookup.
s	Pointer the signature to look in.

Return values

A	pointer to the SigMatch if found, otherwise NULL.

Definition at line 375 of file detect-byte-extract.c.

References SignatureInitData_::buffer_index, SignatureInitData_::buffers, SigMatch_::ctx, DETECT_BYTE_EXTRACT, SignatureInitDataBuffer_::head, Signature_::init_data, SigMatch_::next, and SigMatch_::type.

Referenced by DetectByteRetrieveSMVar().

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