detect-engine-payload.h File Reference

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Functions
int	PrefilterPktPayloadRegister (DetectEngineCtx *de_ctx, SigGroupHead *sgh, MpmCtx *mpm_ctx)
int	PrefilterPktStreamRegister (DetectEngineCtx *de_ctx, SigGroupHead *sgh, MpmCtx *mpm_ctx)
int	DetectEngineInspectPacketPayload (DetectEngineCtx *, DetectEngineThreadCtx *, const Signature *, Flow *, Packet *)
	Do the content inspection & validation for a signature. More...
int	DetectEngineInspectStreamPayload (DetectEngineCtx *, DetectEngineThreadCtx *, const Signature *, Flow *, Packet *)
	Do the content inspection & validation for a signature on the raw stream. More...
int	DetectEngineInspectStream (ThreadVars *tv, DetectEngineCtx *de_ctx, DetectEngineThreadCtx *det_ctx, const Signature *s, const SigMatchData *smd, Flow *f, uint8_t flags, void *alstate, void *txv, uint64_t tx_id)
	inspect engine for stateful rules More...
void	PayloadRegisterTests (void)

Detailed Description

Author

Victor Julien victo.nosp@m.r@in.nosp@m.linia.nosp@m.c.ne.nosp@m.t

Definition in file detect-engine-payload.h.

Function Documentation

int DetectEngineInspectPacketPayload	(	DetectEngineCtx *	de_ctx,
		DetectEngineThreadCtx *	det_ctx,
		const Signature *	s,
		Flow *	f,
		Packet *	p
	)

Do the content inspection & validation for a signature.

Parameters

de_ctx	Detection engine context
det_ctx	Detection engine thread context
s	Signature to inspect
f	flow (for pcre flowvar storage)
p	Packet

Return values

0	no match
1	match

Definition at line 150 of file detect-engine-payload.c.

References DetectEngineThreadCtx_::buffer_offset, DETECT_CI_FLAGS_SINGLE, DETECT_ENGINE_CONTENT_INSPECTION_MODE_PAYLOAD, DETECT_SM_LIST_PMATCH, DetectEngineContentInspection(), DetectEngineThreadCtx_::discontinue_matching, DetectEngineThreadCtx_::inspection_recursion_counter, Packet_::payload, Packet_::payload_len, DetectEngineThreadCtx_::replist, SCEnter, SCReturnInt, and Signature_::sm_arrays.

Referenced by SigMatchSignaturesGetSgh().

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int DetectEngineInspectStream	(	ThreadVars *	tv,
		DetectEngineCtx *	de_ctx,
		DetectEngineThreadCtx *	det_ctx,
		const Signature *	s,
		const SigMatchData *	smd,
		Flow *	f,
		uint8_t	flags,
		void *	alstate,
		void *	txv,
		uint64_t	tx_id
	)

inspect engine for stateful rules

Caches results as it may be called multiple times if we inspect multiple transactions in one packet.

Returns "can't match" if depth is reached.

Definition at line 316 of file detect-engine-payload.c.

References TcpSession_::client, StreamContentInspectEngineData::de_ctx, DE_QUIET, StreamMpmData::det_ctx, DETECT_ENGINE_INSPECT_SIG_CANT_MATCH, DETECT_ENGINE_INSPECT_SIG_MATCH, DETECT_ENGINE_INSPECT_SIG_NO_MATCH, DetectEngineCtxFree(), DetectEngineCtxInit(), DetectEngineThreadCtxDeinit(), DetectEngineThreadCtxInit(), TcpStream_::flags, Packet_::flags, Signature_::flags, DetectEngineCtx_::flags, Signature_::id, DetectEngineCtx_::inspection_recursion_limit, mpm_default_matcher, DetectEngineCtx_::mpm_matcher, DetectEngineThreadCtx_::p, PacketAlertCheck(), Packet_::pcap_cnt, PKT_STREAM_ADD, Packet_::proto, Flow_::protoctx, DetectEngineThreadCtx_::raw_stream_progress, StreamContentInspectEngineData::s, SCLogDebug, TcpSession_::server, SIG_FLAG_FLUSH, DetectEngineCtx_::sig_list, SigCleanSignatures(), SigGroupBuild(), SigGroupCleanup(), SigInit(), SigMatchSignatures(), StreamContentInspectEngineData::smd, STREAM_TOSERVER, StreamReassembleRaw(), STREAMTCP_STREAM_FLAG_DEPTH_REACHED, UTHBuildPacket(), UTHFreePacket(), and UTHPacketMatchSigMpm().

Referenced by DetectAppLayerInspectEngineRegister2().

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int DetectEngineInspectStreamPayload	(	DetectEngineCtx *	de_ctx,
		DetectEngineThreadCtx *	det_ctx,
		const Signature *	s,
		Flow *	f,
		Packet *	p
	)

Do the content inspection & validation for a signature on the raw stream.

Parameters

de_ctx	Detection engine context
det_ctx	Detection engine thread context
s	Signature to inspect
f	flow (for pcre flowvar storage)

Return values

0	no match
1	match

Definition at line 262 of file detect-engine-payload.c.

References StreamContentInspectData::de_ctx, StreamMpmData::det_ctx, Signature_::flags, StreamContentInspectData::s, SCEnter, SIG_FLAG_FLUSH, and StreamReassembleRaw().

Referenced by SigMatchSignaturesGetSgh().

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void PayloadRegisterTests

(

void

)

Definition at line 1315 of file detect-engine-payload.c.

References UtRegisterTest().

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int PrefilterPktPayloadRegister	(	DetectEngineCtx *	de_ctx,
		SigGroupHead *	sgh,
		MpmCtx *	mpm_ctx
	)

Definition at line 130 of file detect-engine-payload.c.

References PrefilterAppendPayloadEngine().

Referenced by PatternMatchPrepareGroup().

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int PrefilterPktStreamRegister	(	DetectEngineCtx *	de_ctx,
		SigGroupHead *	sgh,
		MpmCtx *	mpm_ctx
	)

Definition at line 109 of file detect-engine-payload.c.

References MpmCtx_::minlen, StreamMpmData::mpm_ctx, mpm_table, MpmCtx_::mpm_type, DetectEngineThreadCtx_::mtc, Packet_::payload, Packet_::payload_len, DetectEngineThreadCtx_::pmq, PrefilterAppendPayloadEngine(), SCEnter, SCReturn, and MpmTableElmt_::Search.

Referenced by PatternMatchPrepareGroup().

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