detect-bytemath.c File Reference

#include "suricata-common.h"
#include "threads.h"
#include "decode.h"
#include "app-layer-parser.h"
#include "app-layer-protos.h"
#include "detect.h"
#include "detect-parse.h"
#include "detect-engine.h"
#include "detect-engine-mpm.h"
#include "detect-engine-state.h"
#include "detect-engine-build.h"
#include "rust-bindings.h"
#include "detect-content.h"
#include "detect-pcre.h"
#include "detect-byte.h"
#include "detect-bytemath.h"
#include "flow.h"
#include "flow-var.h"
#include "flow-util.h"
#include "util-byte.h"
#include "util-debug.h"
#include "util-unittest.h"
#include "util-unittest-helper.h"
#include "util-spm.h"
#include "detect-engine-alert.h"

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Macros
#define	DETECT_BYTEMATH_ENDIAN_DEFAULT   (uint8_t) BigEndian
#define	DETECT_BYTEMATH_BASE_DEFAULT   (uint8_t) BaseDec

Functions
void	DetectBytemathRegister (void)
	Registers the keyword handlers for the "byte_math" keyword. More...
int	DetectByteMathDoMatch (DetectEngineThreadCtx *det_ctx, const DetectByteMathData *data, const Signature *s, const uint8_t *payload, const uint32_t payload_len, uint8_t nbytes, uint64_t rvalue, uint64_t *value, uint8_t endian)
SigMatch *	DetectByteMathRetrieveSMVar (const char *arg, const Signature *s)
	Lookup the SigMatch for a named byte_math variable. More...

Detailed Description

Author

Jeff Lucovsky jeff@.nosp@m.luco.nosp@m.vsky..nosp@m.org

Definition in file detect-bytemath.c.

Macro Definition Documentation

DETECT_BYTEMATH_BASE_DEFAULT

#define DETECT_BYTEMATH_BASE_DEFAULT   (uint8_t) BaseDec

Definition at line 63 of file detect-bytemath.c.

DETECT_BYTEMATH_ENDIAN_DEFAULT

#define DETECT_BYTEMATH_ENDIAN_DEFAULT   (uint8_t) BigEndian

Definition at line 62 of file detect-bytemath.c.

Function Documentation

DetectByteMathDoMatch()

int DetectByteMathDoMatch	(	DetectEngineThreadCtx *	det_ctx,
		const DetectByteMathData *	data,
		const Signature *	s,
		const uint8_t *	payload,
		const uint32_t	payload_len,
		uint8_t	nbytes,
		uint64_t	rvalue,
		uint64_t *	value,
		uint8_t	endian
	)

Definition at line 88 of file detect-bytemath.c.

References payload_len.

DetectBytemathRegister()

void DetectBytemathRegister

(

void

)

Registers the keyword handlers for the "byte_math" keyword.

Definition at line 71 of file detect-bytemath.c.

References DETECT_BYTEMATH, SigTableElmt_::Match, SigTableElmt_::name, SigTableElmt_::Setup, and sigmatch_table.

Referenced by SigTableSetup().

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DetectByteMathRetrieveSMVar()

SigMatch* DetectByteMathRetrieveSMVar	(	const char *	arg,
		const Signature *	s
	)

Lookup the SigMatch for a named byte_math variable.

Parameters

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

Return values

A	pointer to the SigMatch if found, otherwise NULL.

Definition at line 442 of file detect-bytemath.c.

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

Referenced by DetectByteRetrieveSMVar().

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