#include "suricata-common.h"
#include "decode.h"
#include "detect.h"
#include "detect-engine.h"
#include "detect-parse.h"
#include "detect-engine-build.h"
#include "detect-content.h"
#include "detect-uricontent.h"
#include "detect-byte.h"
#include "detect-bytetest.h"
#include "detect-bytejump.h"
#include "detect-byte-extract.h"
#include "app-layer.h"
#include "util-byte.h"
#include "util-unittest.h"
#include "util-debug.h"
#include "detect-pcre.h"
#include "util-unittest-helper.h"
#include "app-layer-parser.h"
#include "flow-util.h"

Include dependency graph for detect-bytetest.c:

Macros
#define	VALID_KW "relative\|big\|little\|string\|oct\|dec\|hex\|dce\|bitmask"
	Regex for parsing our options. More...

#define	PARSE_REGEX

Functions
void	DetectBytetestRegister (void)

int	DetectBytetestDoMatch (DetectEngineThreadCtx det_ctx, const Signature s, const SigMatchCtx ctx, const uint8_t payload, uint32_t payload_len, uint16_t flags, int32_t offset, int32_t nbytes, uint64_t value)
	Bytetest detection code. More...

Detailed Description

Author: Brian Rectanus brect.nosp@m.anu@.nosp@m.gmail.nosp@m..com; Jeff Lucovsky jeff@.nosp@m.luco.nosp@m.vsky..nosp@m.org

Implements byte_test keyword.

Definition in file detect-bytetest.c.

Macro Definition Documentation

◆ PARSE_REGEX

#define PARSE_REGEX

Value:

                     "^\\s*" \
                     "([^\\s,]+)\\s*,\\s*" \
                     "(\\!?\\s*[^\\s,]*)" \
                     "\\s*,\\s*([^\\s,]+\\s*,\\s*[^\\s,]+)" \
                     "(?:\\s*,\\s*((?:"VALID_KW")\\s+[^\\s,]+|["VALID_KW"]+))?" \
                     "(?:\\s*,\\s*((?:"VALID_KW")\\s+[^\\s,]+|["VALID_KW"]+))?" \
                     "(?:\\s*,\\s*((?:"VALID_KW")\\s+[^\\s,]+|["VALID_KW"]+))?" \
                     "(?:\\s*,\\s*((?:"VALID_KW")\\s+[^\\s,]+|["VALID_KW"]+))?" \
                     "(?:\\s*,\\s*((?:"VALID_KW")\\s+[^\\s,]+|["VALID_KW"]+))?" \
                     "(?:\\s*,\\s*((?:"VALID_KW")\\s+[^\\s,]+|["VALID_KW"]+))?" \
                     "\\s*$"

Definition at line 58 of file detect-bytetest.c.

◆ VALID_KW

#define VALID_KW "relative|big|little|string|oct|dec|hex|dce|bitmask"

Regex for parsing our options.

Todo:: We probably just need a simple tokenizer here

Definition at line 57 of file detect-bytetest.c.

Function Documentation

◆ DetectBytetestDoMatch()

int DetectBytetestDoMatch	(	DetectEngineThreadCtx *	det_ctx,
		const Signature *	s,
		const SigMatchCtx *	ctx,
		const uint8_t *	payload,
		uint32_t	payload_len,
		uint16_t	flags,
		int32_t	offset,
		int32_t	nbytes,
		uint64_t	value
	)

Bytetest detection code.

Byte test works on the packet payload.

Parameters

det_ctx	thread de ctx
s	signature
m	sigmatch for this bytetest
payload	ptr to the start of the buffer to inspect
payload_len	length of the payload

Return values

1	match
0	no match

Definition at line 154 of file detect-bytetest.c.

References DETECT_BYTETEST_NBYTES_VAR, DetectBytetestData_::flags, payload_len, SCEnter, and SCReturnInt.

◆ DetectBytetestRegister()

void DetectBytetestRegister ( void )

Registration function for byte_test.

Todo:: add support for no_stream and stream_only

Definition at line 77 of file detect-bytetest.c.

References SigTableElmt_::desc, DETECT_BYTETEST, SigTableElmt_::name, SigTableElmt_::Setup, sigmatch_table, and SigTableElmt_::url.

Referenced by SigTableSetup().

Here is the caller graph for this function:

Macros