#include "detect.h"
#include "tm-threads.h"
#include "flow-private.h"

Include dependency graph for detect-engine.h:

Macros
#define	DetectEngineGetMaxSigId(de_ctx) ((de_ctx)->signum)

Functions
void	InspectionBufferInit (InspectionBuffer *buffer, uint32_t initial_size)

void	InspectionBufferSetup (InspectionBuffer buffer, const uint8_t data, const uint32_t data_len)
	setup the buffer with our initial data More...

void	InspectionBufferFree (InspectionBuffer *buffer)

void	InspectionBufferCheckAndExpand (InspectionBuffer *buffer, uint32_t min_size)
	make sure that the buffer has at least 'min_size' bytes Expand the buffer if necessary More...

void	InspectionBufferCopy (InspectionBuffer buffer, uint8_t buf, uint32_t buf_len)

void	InspectionBufferApplyTransforms (InspectionBuffer buffer, const DetectEngineTransforms transforms)

void	InspectionBufferClean (DetectEngineThreadCtx *det_ctx)

InspectionBuffer *	InspectionBufferGet (DetectEngineThreadCtx *det_ctx, const int list_id)

InspectionBuffer *	InspectionBufferMultipleForListGet (InspectionBufferMultipleForList *fb, uint32_t local_id)
	for a InspectionBufferMultipleForList get a InspectionBuffer More...

InspectionBufferMultipleForList *	InspectionBufferGetMulti (DetectEngineThreadCtx *det_ctx, const int list_id)

int	DetectBufferTypeRegister (const char *name)

int	DetectBufferTypeGetByName (const char *name)

void	DetectBufferTypeSupportsMpm (const char *name)

void	DetectBufferTypeSupportsPacket (const char *name)

void	DetectBufferTypeSupportsTransformations (const char *name)

int	DetectBufferTypeMaxId (void)

void	DetectBufferTypeCloseRegistration (void)

void	DetectBufferTypeSetDescriptionByName (const char name, const char desc)

const char *	DetectBufferTypeGetDescriptionByName (const char *name)

void	DetectBufferTypeRegisterSetupCallback (const char name, void(Callback)(const DetectEngineCtx , Signature ))

void	DetectBufferTypeRegisterValidateCallback (const char name, _Bool(ValidateCallback)(const Signature , const char *sigerror))

int	DetectBufferTypeGetByIdTransforms (DetectEngineCtx de_ctx, const int id, int transforms, int transform_cnt)

const char *	DetectBufferTypeGetNameById (const DetectEngineCtx *de_ctx, const int id)

bool	DetectBufferTypeSupportsMpmGetById (const DetectEngineCtx *de_ctx, const int id)

bool	DetectBufferTypeSupportsPacketGetById (const DetectEngineCtx *de_ctx, const int id)

const char *	DetectBufferTypeGetDescriptionById (const DetectEngineCtx *de_ctx, const int id)

void	DetectBufferRunSetupCallback (const DetectEngineCtx de_ctx, const int id, Signature s)

bool	DetectBufferRunValidateCallback (const DetectEngineCtx de_ctx, const int id, const Signature s, const char **sigerror)

DetectEngineCtx *	DetectEngineCtxInitWithPrefix (const char *prefix)

DetectEngineCtx *	DetectEngineCtxInit (void)

DetectEngineCtx *	DetectEngineCtxInitStubForDD (void)

DetectEngineCtx *	DetectEngineCtxInitStubForMT (void)

void	DetectEngineCtxFree (DetectEngineCtx *)
	Free a DetectEngineCtx:: More...

int	DetectRegisterThreadCtxGlobalFuncs (const char name, void (InitFunc)(void ), void data, void(FreeFunc)(void *))
	Register Thread keyword context Funcs (Global) More...

void *	DetectThreadCtxGetGlobalKeywordThreadCtx (DetectEngineThreadCtx *det_ctx, int id)
	Retrieve thread local keyword ctx by id. More...

TmEcode	DetectEngineThreadCtxInit (ThreadVars , void , void **)
	initialize thread specific detection engine context More...

TmEcode	DetectEngineThreadCtxDeinit (ThreadVars , void )

void	DetectEngineResetMaxSigId (DetectEngineCtx *)

void	DetectEngineRegisterTests (void)

const char *	DetectSigmatchListEnumToString (enum DetectSigmatchListEnum type)

uint32_t	DetectEngineGetVersion (void)

void	DetectEngineBumpVersion (void)

int	DetectEngineAddToMaster (DetectEngineCtx *de_ctx)

DetectEngineCtx *	DetectEngineGetCurrent (void)

DetectEngineCtx *	DetectEngineGetByTenantId (int tenant_id)

void	DetectEnginePruneFreeList (void)

int	DetectEngineMoveToFreeList (DetectEngineCtx *de_ctx)

DetectEngineCtx *	DetectEngineReference (DetectEngineCtx *)

void	DetectEngineDeReference (DetectEngineCtx **de_ctx)

int	DetectEngineReload (const SCInstance *suri)
	Reload the detection engine. More...

int	DetectEngineEnabled (void)
	Check if detection is enabled. More...

int	DetectEngineMTApply (void)

int	DetectEngineMultiTenantEnabled (void)

int	DetectEngineMultiTenantSetup (void)
	setup multi-detect / multi-tenancy More...

int	DetectEngineReloadStart (void)

int	DetectEngineReloadIsStart (void)

void	DetectEngineReloadSetIdle (void)

int	DetectEngineReloadIsIdle (void)

int	DetectEngineLoadTenantBlocking (uint32_t tenant_id, const char *yaml)
	Load a tenant and wait for loading to complete. More...

int	DetectEngineReloadTenantBlocking (uint32_t tenant_id, const char *yaml, int reload_cnt)
	Reload a tenant and wait for loading to complete. More...

int	DetectEngineTentantRegisterLivedev (uint32_t tenant_id, int device_id)

int	DetectEngineTentantRegisterVlanId (uint32_t tenant_id, uint16_t vlan_id)

int	DetectEngineTentantUnregisterVlanId (uint32_t tenant_id, uint16_t vlan_id)

int	DetectEngineTentantRegisterPcapFile (uint32_t tenant_id)

int	DetectEngineTentantUnregisterPcapFile (uint32_t tenant_id)

int	DetectEngineInspectGenericList (ThreadVars , const DetectEngineCtx , DetectEngineThreadCtx , const Signature , const SigMatchData , Flow , const uint8_t, void , void , uint64_t)
	Do the content inspection & validation for a signature. More...

int	DetectEngineInspectBufferGeneric (DetectEngineCtx de_ctx, DetectEngineThreadCtx det_ctx, const DetectEngineAppInspectionEngine engine, const Signature s, Flow f, uint8_t flags, void alstate, void *txv, uint64_t tx_id)
	Do the content inspection & validation for a signature. More...

int	DetectEngineInspectPktBufferGeneric (DetectEngineThreadCtx det_ctx, const DetectEnginePktInspectionEngine engine, const Signature s, Packet p, uint8_t *alert_flags)
	Do the content inspection & validation for a signature. More...

void	DetectAppLayerInspectEngineRegister (const char *name, AppProto alproto, uint32_t dir, int progress, InspectEngineFuncPtr Callback)
	Registers an app inspection engine. More...

void	DetectAppLayerInspectEngineRegister2 (const char *name, AppProto alproto, uint32_t dir, int progress, InspectEngineFuncPtr2 Callback2, InspectionBufferGetDataPtr GetData)
	register inspect engine at start up time More...

void	DetectPktInspectEngineRegister (const char *name, InspectionBufferGetPktDataPtr GetPktData, InspectionBufferPktInspectFunc Callback)
	register inspect engine at start up time More...

int	DetectEngineAppInspectionEngine2Signature (DetectEngineCtx de_ctx, Signature s)

void	DetectEngineAppInspectionEngineSignatureFree (Signature *s)
	free app inspect engines for a signature More...

bool	DetectEnginePktInspectionRun (ThreadVars tv, DetectEngineThreadCtx det_ctx, const Signature s, Flow f, Packet p, uint8_t alert_flags)

int	DetectEnginePktInspectionSetup (Signature *s)

void	DetectEngineSetParseMetadata (void)

void	DetectEngineUnsetParseMetadata (void)

int	DetectEngineMustParseMetadata (void)

int WARN_UNUSED	DetectBufferSetActiveList (Signature *s, const int list)

int	DetectBufferGetActiveList (DetectEngineCtx de_ctx, Signature s)

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.h.

Macro Definition Documentation

#define DetectEngineGetMaxSigId ( de_ctx ) ((de_ctx)->signum)

Definition at line 81 of file detect-engine.h.

Referenced by IPOnlyInit(), MpmStorePrepareBuffer(), SigAddressCleanupStage1(), SigAddressPrepareStage1(), SigAddressPrepareStage2(), SigGroupHeadAppendSig(), SigGroupHeadContainsSigId(), and SigGroupHeadCopySigs().

Function Documentation

void DetectAppLayerInspectEngineRegister	(	const char *	name,
		AppProto	alproto,
		uint32_t	dir,
		int	progress,
		InspectEngineFuncPtr	Callback
	)

Registers an app inspection engine.

Parameters

name	Name of the detection list
alproto	App layer protocol for which we will register the engine.
direction	The direction for the engine: SIG_FLAG_TOSERVER or SIG_FLAG_TOCLIENT
progress	Minimal progress value for inspect engine to run
Callback	The engine callback.

Registers an app inspection engine.

Note: errors are fatal

Definition at line 170 of file detect-engine.c.

References DetectEngineAppInspectionEngine_::alproto, ALPROTO_FAILED, AppLayerParserIsTxAware(), AppLayerParserSupportsTxDetectFlags(), AppProtoToString(), BUG_ON, DetectEngineAppInspectionEngine_::Callback, DETECT_SM_LIST_MATCH, DetectBufferTypeGetByName(), DetectBufferTypeRegister(), DetectEngineAppInspectionEngine_::dir, FatalError, DetectEngineAppInspectionEngine_::next, DetectEngineAppInspectionEngine_::progress, SC_ERR_INITIALIZATION, SC_ERR_INVALID_ARGUMENTS, SCLogError, SCMalloc, SIG_FLAG_TOCLIENT, SIG_FLAG_TOSERVER, DetectEngineAppInspectionEngine_::sm_list, and unlikely.

Referenced by DetectAppLayerEventRegister(), DetectCipServiceRegister(), DetectDceIfaceRegister(), DetectDNP3Register(), DetectDnsOpcodeRegister(), DetectDnsQueryRegister(), DetectEnipCommandRegister(), DetectFilenameRegister(), DetectFtpbounceRegister(), DetectFtpdataRegister(), DetectKrb5ErrCodeRegister(), DetectKrb5MsgTypeRegister(), DetectLuaRegister(), DetectModbusRegister(), DetectNfsProcedureRegister(), DetectNfsVersionRegister(), DetectSNMPPduTypeRegister(), DetectSNMPVersionRegister(), DetectSshSoftwareVersionRegister(), DetectSslStateRegister(), DetectTemplateRustBufferRegister(), DetectTlsRegister(), and DetectTlsValidityRegister().

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void DetectAppLayerInspectEngineRegister2	(	const char *	name,
		AppProto	alproto,
		uint32_t	dir,
		int	progress,
		InspectEngineFuncPtr2	Callback2,
		InspectionBufferGetDataPtr	GetData
	)

register inspect engine at start up time

Note: errors are fatal

Definition at line 231 of file detect-engine.c.

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int DetectBufferGetActiveList	(	DetectEngineCtx *	de_ctx,
		Signature *	s
	)

Definition at line 985 of file detect-engine.c.

References BUG_ON, DetectBufferTypeGetByIdTransforms(), Signature_::init_data, SignatureInitData_::list, SignatureInitData_::list_set, SCLogDebug, SignatureInitData_::transform_cnt, and SignatureInitData_::transforms.

Referenced by DetectBytejumpDoMatch(), DetectBytetestDoMatch(), DetectContentSetup(), DetectDatarepBufferMatch(), DetectDatasetBufferMatch(), DetectIsdataatSetup(), DetectLuaRegister(), and DetectPcrePayloadMatch().

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void DetectBufferRunSetupCallback	(	const DetectEngineCtx *	de_ctx,
		const int	id,
		Signature *	s
	)

Definition at line 943 of file detect-engine.c.

References DetectBufferType_::SetupCallback.

Referenced by SigAddressPrepareStage1(), and SigMatchList2DataArray().

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bool DetectBufferRunValidateCallback	(	const DetectEngineCtx *	de_ctx,
		const int	id,
		const Signature *	s,
		const char **	sigerror
	)

Definition at line 962 of file detect-engine.c.

References TRUE, and DetectBufferType_::ValidateCallback.

Referenced by SigMatchList2DataArray().

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int WARN_UNUSED DetectBufferSetActiveList	(	Signature *	s,
		const int	list
	)

Definition at line 972 of file detect-engine.c.

References BUG_ON, Signature_::init_data, SignatureInitData_::list, SignatureInitData_::list_set, and SignatureInitData_::transform_cnt.

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void DetectBufferTypeCloseRegistration ( void )

Definition at line 1229 of file detect-engine.c.

References BUG_ON.

Referenced by SigTableSetup().

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int DetectBufferTypeGetByIdTransforms	(	DetectEngineCtx *	de_ctx,
		const int	id,
		int *	transforms,
		int	transform_cnt
	)

Definition at line 1236 of file detect-engine.c.

References Signature_::action, ACTION_DROP, DetectEngineCtx_::buffer_type_hash, DetectEngineCtx_::buffer_type_id, DetectEngineCtx_::buffer_type_map, DetectEngineCtx_::buffer_type_map_elements, BUG_ON, DetectEngineTransforms::cnt, SigMatchData_::ctx, DetectEngineThreadCtx_::de_ctx, DETECT_ENGINE_THREAD_CTX_STREAM_CONTENT_MATCH, DETECT_SM_LIST_MATCH, DETECT_SM_LIST_PMATCH, DetectAppLayerMpmRegisterByParentId(), DetectEngineInspectPacketPayload(), DetectEngineInspectStreamPayload(), DetectPktMpmRegisterByParentId(), Packet_::flags, Signature_::flags, DetectEngineThreadCtx_::flags, Packet_::flow, HashListTableAdd(), HashListTableLookup(), DetectBufferType_::id, SigMatchData_::is_last, KEYWORD_PROFILING_END, KEYWORD_PROFILING_SET_LIST, KEYWORD_PROFILING_START, SigTableElmt_::Match, DetectBufferType_::mpm, DetectBufferType_::packet, PACKET_ALERT_FLAG_DROP_FLOW, PACKET_ALERT_FLAG_STREAM_MATCH, DetectBufferType_::parent_id, PKT_DETECT_HAS_STREAMDATA, PKT_STREAM_ADD, res, SC_ERR_INVALID_SIGNATURE, SCCalloc, SCEnter, SCLogDebug, SCLogError, SCRealloc, DetectBufferType_::SetupCallback, SIG_FLAG_REQUIRE_PACKET, SIG_FLAG_REQUIRE_STREAM, sigmatch_table, Signature_::sm_arrays, DetectBufferType_::string, DetectBufferType_::supports_transforms, DetectEngineTransforms::transforms, DetectBufferType_::transforms, SigMatchData_::type, and DetectBufferType_::ValidateCallback.

Referenced by DetectBufferGetActiveList().

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int DetectBufferTypeGetByName ( const char * name )

Definition at line 860 of file detect-engine.c.

References DetectBufferType_::id.

const char* DetectBufferTypeGetDescriptionById	(	const DetectEngineCtx *	de_ctx,
		const int	id
	)

Definition at line 897 of file detect-engine.c.

References DetectBufferType_::description.

Referenced by EngineAnalysisFP(), and PerCentEncodingMatch().

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const char* DetectBufferTypeGetDescriptionByName ( const char * name )

Definition at line 906 of file detect-engine.c.

References DetectBufferType_::description.

const char* DetectBufferTypeGetNameById	(	const DetectEngineCtx *	de_ctx,
		const int	id
	)

Definition at line 869 of file detect-engine.c.

References DetectEngineCtx_::buffer_type_map, DetectEngineCtx_::buffer_type_map_elements, BUG_ON, and DetectBufferType_::string.

Referenced by DetectEngineAppInspectionEngine2Signature(), DetectRawbytesRegister(), EngineAnalysisFP(), EngineAnalysisRules2(), PerCentEncodingMatch(), SCProfilingKeywordsGlobalInit(), SigMatchList2DataArray(), and SignatureIsIPOnly().

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int DetectBufferTypeMaxId ( void )

Definition at line 735 of file detect-engine.c.

References HashListTable_::array_size, BUG_ON, HashListTableAdd(), HashListTableFree(), HashListTableInit(), HashListTableLookup(), hashlittle_safe(), DetectBufferType_::id, res, SCCalloc, SCFree, SCLogDebug, DetectBufferType_::string, and DetectBufferType_::transforms.

Referenced by SigAlloc().

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int DetectBufferTypeRegister ( const char * name )

Definition at line 816 of file detect-engine.c.

References BUG_ON, and DetectBufferType_::id.

Referenced by DetectAppLayerInspectEngineRegister(), DetectAppLayerInspectEngineRegister2(), DetectBufferTypeRegisterSetupCallback(), DetectBufferTypeRegisterValidateCallback(), DetectBufferTypeSupportsMpm(), DetectBufferTypeSupportsPacket(), DetectBufferTypeSupportsTransformations(), DetectDceIfaceRegister(), DetectDceOpnumRegister(), DetectDNP3Register(), DetectFileextRegister(), DetectFilemagicRegister(), DetectFileMd5Register(), DetectFileSha1Register(), DetectFileSha256Register(), DetectFilesizeRegister(), DetectFilestoreRegister(), DetectFtpbounceRegister(), DetectHttpServerBodyRegister(), DetectIpv4hdrRegister(), DetectIpv6hdrRegister(), DetectKrb5ErrCodeRegister(), DetectKrb5MsgTypeRegister(), DetectLuaRegister(), DetectPktInspectEngineRegister(), DetectSshSoftwareVersionRegister(), DetectSshVersionRegister(), DetectSslStateRegister(), DetectSslVersionRegister(), DetectTcphdrRegister(), DetectTlsRegister(), DetectTlsVersionRegister(), DetectUdphdrRegister(), DetectUricontentRegister(), and DetectUrilenRegister().

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void DetectBufferTypeRegisterSetupCallback	(	const char *	name,
		void()(const DetectEngineCtx , Signature *)	Callback
	)

Definition at line 933 of file detect-engine.c.

References BUG_ON, DetectBufferTypeRegister(), and DetectBufferType_::SetupCallback.

Referenced by DetectFiledataRegister(), DetectHttpClientBodyRegister(), DetectHttpUriRegister(), DetectSipUriRegister(), DetectTlsFingerprintRegister(), DetectTlsJa3HashRegister(), DetectTlsJa3SHashRegister(), and DetectTlsSerialRegister().

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void DetectBufferTypeRegisterValidateCallback	(	const char *	name,
		_Bool()(const Signature , const char **sigerror)	ValidateCallback
	)

Definition at line 952 of file detect-engine.c.

References BUG_ON, DetectBufferTypeRegister(), and DetectBufferType_::ValidateCallback.

Referenced by DetectHttpHHRegister(), DetectHttpMethodRegister(), DetectHttpRawHeaderRegister(), DetectHttpUriRegister(), DetectSipMethodRegister(), DetectSipUriRegister(), DetectTlsFingerprintRegister(), DetectTlsJa3HashRegister(), DetectTlsJa3SHashRegister(), and DetectTlsSerialRegister().

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void DetectBufferTypeSetDescriptionByName	(	const char *	name,
		const char *	desc
	)

Definition at line 888 of file detect-engine.c.

References DetectBufferType_::description.

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void DetectBufferTypeSupportsMpm ( const char * name )

Definition at line 840 of file detect-engine.c.

References BUG_ON, DetectBufferTypeRegister(), DetectBufferType_::id, DetectBufferType_::mpm, SCLogDebug, and TRUE.

Referenced by DetectAppLayerMpmRegister2(), and DetectPktMpmRegister().

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bool DetectBufferTypeSupportsMpmGetById	(	const DetectEngineCtx *	de_ctx,
		const int	id
	)

Definition at line 924 of file detect-engine.c.

References FALSE, DetectBufferType_::mpm, and SCLogDebug.

Referenced by DetectGetLastSMFromMpmLists(), and FastPatternSupportEnabledForSigMatchList().

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void DetectBufferTypeSupportsPacket ( const char * name )

Definition at line 830 of file detect-engine.c.

References BUG_ON, DetectBufferTypeRegister(), DetectBufferType_::id, DetectBufferType_::packet, SCLogDebug, and TRUE.

Referenced by DetectIpv4hdrRegister(), DetectIpv6hdrRegister(), DetectTcphdrRegister(), and DetectUdphdrRegister().

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bool DetectBufferTypeSupportsPacketGetById	(	const DetectEngineCtx *	de_ctx,
		const int	id
	)

Definition at line 915 of file detect-engine.c.

References FALSE, DetectBufferType_::packet, and SCLogDebug.

Referenced by SigMatchList2DataArray().

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void DetectBufferTypeSupportsTransformations ( const char * name )

Definition at line 850 of file detect-engine.c.

References BUG_ON, DetectBufferTypeRegister(), DetectBufferType_::id, SCLogDebug, and DetectBufferType_::supports_transforms.

Referenced by DetectAppLayerMpmRegister2(), and DetectPktMpmRegister().

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int DetectEngineAddToMaster ( DetectEngineCtx * de_ctx )

Definition at line 3893 of file detect-engine.c.

References DetectEngineMasterCtx_::lock, SCLogDebug, SCMutexLock, and SCMutexUnlock.

Referenced by DetectEngineMultiTenantEnabled(), DetectEngineReload(), DetectReplaceFreeInternal(), and PostRunDeinit().

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int DetectEngineAppInspectionEngine2Signature	(	DetectEngineCtx *	de_ctx,
		Signature *	s
	)

Note: for the file inspect engine, the id DE_STATE_ID_FILE_INSPECT is assigned.

Definition at line 466 of file detect-engine.c.

Referenced by SigAddressPrepareStage4().

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void DetectEngineAppInspectionEngineSignatureFree ( Signature * s )

free app inspect engines for a signature

For lists that are registered multiple times, like http_header and http_cookie, making the engines owner of the lists is complicated. Multiple engines in a sig may be pointing to the same list. To address this the 'free' code needs to be extra careful about not double freeing, so it takes an approach to first fill an array of the to-free pointers before freeing them.

Definition at line 667 of file detect-engine.c.

References Signature_::app_inspect, BUG_ON, SigMatchData_::ctx, DETECT_SM_LIST_DYNAMIC_START, SigTableElmt_::Free, SigMatchData_::is_last, MAX, DetectEngineAppInspectionEngine_::next, DetectEnginePktInspectionEngine::next, next, Signature_::pkt_inspect, SCFree, sigmatch_table, DetectEngineAppInspectionEngine_::sm_list, DetectEnginePktInspectionEngine::sm_list, DetectEngineAppInspectionEngine_::smd, DetectEnginePktInspectionEngine::smd, DetectEngineTransforms::transforms, and SigMatchData_::type.

Referenced by SigFree().

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void DetectEngineBumpVersion ( void )

Definition at line 3159 of file detect-engine.c.

References DetectEngineMasterCtx_::lock, SCLogDebug, SCMutexLock, SCMutexUnlock, and DetectEngineMasterCtx_::version.

Referenced by DetectEngineReload(), and PostRunDeinit().

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void DetectEngineCtxFree ( DetectEngineCtx * de_ctx )

Free a DetectEngineCtx::

Parameters

de_ctx DetectEngineCtx:: to be freed

Definition at line 2074 of file detect-engine.c.

References ByteExtractStringUint16(), ConfDump(), ConfGet(), ConfGetInt(), ConfGetNode(), DetectEngineCtx_::config_prefix, ConfNodeLookupChild(), ConfNodeLookupChildValue(), ConfNodeRemove(), DETECT_ENGINE_DEFAULT_INSPECTION_RECURSION_LIMIT, DETECT_PREFILTER_AUTO, DETECT_PREFILTER_MPM, DetectAddressMapFree(), DetectMetadataHashFree(), DetectParseDupSigHashFree(), DetectPortCleanupList(), DetectPortParse(), ENGINE_PROFILE_CUSTOM, ENGINE_PROFILE_HIGH, ENGINE_PROFILE_LOW, ENGINE_PROFILE_MEDIUM, ENGINE_PROFILE_UNKNOWN, ENGINE_SGH_MPM_FACTORY_CONTEXT_FULL, ENGINE_SGH_MPM_FACTORY_CONTEXT_SINGLE, DetectEngineCtx_::inspection_recursion_limit, DetectEngineCtx_::max_uniq_toclient_groups, DetectEngineCtx_::max_uniq_toserver_groups, MPM_AC, MPM_AC_BS, MPM_AC_KS, MPM_HS, DetectEngineCtx_::mpm_matcher, MpmFactoryDeRegisterAllMpmCtxProfiles(), MpmStoreFree(), ConfNode_::name, DetectPort_::next, next, DetectPort_::port, DetectPort_::port2, DetectEngineCtx_::prefilter_setting, DetectEngineCtx_::profile_ctx, DetectEngineCtx_::profile_keyword_ctx, DetectEngineCtx_::profile_sgh_ctx, run_mode, RUNMODE_UNITTEST, SC_ERR_INVALID_YAML_CONF_ENTRY, SC_ERR_SIZE_PARSE, SCClassConfDeInitContext(), SCFree, SCLogDebug, SCLogError, SCLogWarning, SCProfilingKeywordDestroyCtx(), SCProfilingPrefilterDestroyCtx(), SCProfilingRuleDestroyCtx(), SCProfilingSghDestroyCtx(), SCRConfDeInitContext(), SCSigSignatureOrderingModuleCleanup(), DetectEngineCtx_::sgh_mpm_context, DetectEngineCtx_::sig_array, SigCleanSignatures(), SigGroupCleanup(), SigGroupHeadHashFree(), DetectEngineCtx_::spm_global_thread_ctx, SpmDestroyGlobalThreadCtx(), SRepDestroy(), TAILQ_FOREACH, DetectEngineCtx_::tcp_whitelist, ThresholdContextDestroy(), DetectEngineCtx_::udp_whitelist, ConfNode_::val, VarNameStoreFree(), and DetectEngineCtx_::version.

Referenced by DetectEngineGetEventInfo(), DetectEngineInspectPktBufferGeneric(), DetectEngineMultiTenantEnabled(), DetectEnginePruneFreeList(), and DetectEngineReload().

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DetectEngineCtx* DetectEngineCtxInit ( void )

Definition at line 2029 of file detect-engine.c.

References DETECT_ENGINE_TYPE_NORMAL.

Referenced by DetectEngineCtxInitWithPrefix(), and DetectEngineGetEventInfo().

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DetectEngineCtx* DetectEngineCtxInitStubForDD ( void )

Definition at line 2024 of file detect-engine.c.

References DETECT_ENGINE_TYPE_DD_STUB.

Referenced by PostRunDeinit().

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DetectEngineCtx* DetectEngineCtxInitStubForMT ( void )

Definition at line 2019 of file detect-engine.c.

References DETECT_ENGINE_TYPE_MT_STUB.

Referenced by DetectEngineMTApply(), and PostRunDeinit().

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DetectEngineCtx* DetectEngineCtxInitWithPrefix ( const char * prefix )

Definition at line 2034 of file detect-engine.c.

References DETECT_ENGINE_TYPE_NORMAL, DetectEngineCtxInit(), SigString_::filename, DetectEngineCtx_::keyword_list, next, DetectEngineThreadKeywordCtxItem_::next, SCFree, SigString_::sig_error, DetectEngineCtx_::sig_stat, SigString_::sig_str, TAILQ_FOREACH_SAFE, and TAILQ_REMOVE.

Referenced by DetectEngineMultiTenantEnabled(), and DetectEngineReload().

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void DetectEngineDeReference ( DetectEngineCtx ** de_ctx )

Definition at line 3869 of file detect-engine.c.

References BUG_ON, DetectEngineMasterCtx_::list, and DetectEngineCtx_::next.

Referenced by DetectEngineMultiTenantEnabled(), DetectEngineReload(), DetectEngineThreadCtxInit(), GlobalsInitPreConfig(), and UnixSocketPcapFile().

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int DetectEngineEnabled ( void )

Check if detection is enabled.

Return values

bool	true or false

Definition at line 3135 of file detect-engine.c.

References DetectEngineMasterCtx_::list, DetectEngineMasterCtx_::lock, SCMutexLock, and SCMutexUnlock.

Referenced by PostRunDeinit().

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DetectEngineCtx* DetectEngineGetByTenantId ( int tenant_id )

Definition at line 3843 of file detect-engine.c.

References DETECT_ENGINE_TYPE_TENANT, DetectEngineMasterCtx_::list, DetectEngineMasterCtx_::lock, DetectEngineCtx_::next, DetectEngineCtx_::ref_cnt, SCMutexLock, SCMutexUnlock, DetectEngineCtx_::tenant_id, and DetectEngineCtx_::type.

Referenced by DetectEngineMultiTenantEnabled(), and UnixSocketPcapFile().

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DetectEngineCtx* DetectEngineGetCurrent ( void )

Definition at line 3168 of file detect-engine.c.

References DETECT_ENGINE_TYPE_DD_STUB, DETECT_ENGINE_TYPE_MT_STUB, DETECT_ENGINE_TYPE_NORMAL, DetectEngineMasterCtx_::list, DetectEngineMasterCtx_::lock, DetectEngineCtx_::next, DetectEngineCtx_::ref_cnt, SCLogDebug, SCMutexLock, SCMutexUnlock, and DetectEngineCtx_::type.

Referenced by DetectEngineReload(), DetectEngineThreadCtxInit(), and GlobalsInitPreConfig().

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uint32_t DetectEngineGetVersion ( void )

Definition at line 3149 of file detect-engine.c.

References DetectEngineMasterCtx_::lock, SCMutexLock, SCMutexUnlock, version, and DetectEngineMasterCtx_::version.

Referenced by DetectEngineInspectPktBufferGeneric().

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int DetectEngineInspectBufferGeneric	(	DetectEngineCtx *	de_ctx,
		DetectEngineThreadCtx *	det_ctx,
		const DetectEngineAppInspectionEngine *	engine,
		const Signature *	s,
		Flow *	f,
		uint8_t	flags,
		void *	alstate,
		void *	txv,
		uint64_t	tx_id
	)

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
flags	app layer flags
state	App layer state

Return values

0	no match.
1	match.
2	Sig can't match.

Definition at line 1570 of file detect-engine.c.

References Flow_::alproto, AppLayerParserGetStateProgress(), DetectEngineThreadCtx_::buffer_offset, DETECT_CI_FLAGS_END, DETECT_CI_FLAGS_START, DETECT_ENGINE_CONTENT_INSPECTION_MODE_STATE, DETECT_ENGINE_INSPECT_SIG_CANT_MATCH, DETECT_ENGINE_INSPECT_SIG_MATCH, DETECT_ENGINE_INSPECT_SIG_NO_MATCH, DetectEngineContentInspection(), DetectEngineThreadCtx_::discontinue_matching, InspectionBuffer::flags, DetectEngineAppInspectionEngine_::GetData, InspectionBuffer::inspect, InspectionBuffer::inspect_len, InspectionBuffer::inspect_offset, DetectEngineThreadCtx_::inspection_recursion_counter, DetectEngineAppInspectionEngine_::mpm, offset, DetectEngineAppInspectionEngine_::progress, Flow_::proto, SCLogDebug, DetectEngineAppInspectionEngine_::sm_list, DetectEngineAppInspectionEngine_::smd, DetectEngineAppInspectionEngine_::transforms, unlikely, and DetectEngineAppInspectionEngine_::v2.

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

Do the content inspection & validation for a signature.

Parameters

de_ctx	Detection engine context
det_ctx	Detection engine thread context
s	Signature to inspect
sm	SigMatch to inspect
f	Flow
flags	app layer flags
state	App layer state

Return values

0	no match
1	match

Definition at line 1525 of file detect-engine.c.

References SigMatchData_::ctx, DETECT_ENGINE_INSPECT_SIG_CANT_MATCH, DETECT_ENGINE_INSPECT_SIG_MATCH, DETECT_ENGINE_INSPECT_SIG_NO_MATCH, SigMatchData_::is_last, KEYWORD_PROFILING_END, KEYWORD_PROFILING_START, SCLogDebug, sigmatch_table, and SigMatchData_::type.

Referenced by DetectDceIfaceRegister(), DetectEngineInspectDnsRequest(), DetectEngineInspectDnsResponse(), DetectFtpbounceRegister(), DetectFtpdataRegister(), DetectKrb5ErrCodeRegister(), DetectKrb5MsgTypeRegister(), DetectLuaRegister(), DetectNfsProcedureRegister(), DetectNfsVersionRegister(), DetectSNMPPduTypeRegister(), DetectSNMPVersionRegister(), DetectSslStateRegister(), and DetectTlsValidityRegister().

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int DetectEngineInspectPktBufferGeneric	(	DetectEngineThreadCtx *	det_ctx,
		const DetectEnginePktInspectionEngine *	engine,
		const Signature *	s,
		Packet *	p,
		uint8_t *	_alert_flags
	)

Do the content inspection & validation for a signature.

Parameters

de_ctx	Detection engine context
det_ctx	Detection engine thread context
s	Signature to inspect
p	Packet

Return values

0	no match.
1	match.

Definition at line 1635 of file detect-engine.c.

References ActionInitConfig(), DetectEngineThreadCtx_::buffer_offset, BUG_ON, PacketQueue_::cond_q, ConfGetBool(), DetectEngineCtx_::config_prefix, DetectEngineThreadCtx_::de_ctx, DETECT_CI_FLAGS_END, DETECT_CI_FLAGS_START, DETECT_ENGINE_CONTENT_INSPECTION_MODE_HEADER, DETECT_ENGINE_INSPECT_SIG_MATCH, DETECT_ENGINE_INSPECT_SIG_NO_MATCH, DETECT_ENGINE_TYPE_DD_STUB, DETECT_ENGINE_TYPE_MT_STUB, DetectAddressMapInit(), DetectEngineContentInspection(), DetectEngineCtxFree(), DetectEngineGetVersion(), DetectEngineThreadCtxDeinit(), DetectMetadataHashInit(), DetectParseDupSigHashInit(), DetectEngineThreadCtx_::discontinue_matching, DetectEngineCtx_::failure_fatal, TmModule_::flags, InspectionBuffer::flags, Packet_::flags, Packet_::flow, FlowWorkerGetDetectCtxPtr(), FlowWorkerReplaceDetectCtx(), DetectEnginePktInspectionEngine::GetData, Tmq_::id, ThreadVars_::inq, InspectionBuffer::inspect, InspectionBuffer::inspect_len, DetectEngineThreadCtx_::inspection_recursion_counter, DetectEnginePktInspectionEngine::mpm, DetectEngineCtx_::mpm_matcher, mpm_table, MpmStoreInit(), PacketQueue_::mutex_q, SpmTableElmt_::name, MpmTableElmt_::name, ThreadVars_::next, offset, PacketEnqueue(), PacketGetFromAlloc(), PatternMatchDefaultMatcher(), PKT_PSEUDO_STREAM_END, PKT_SET_SRC, PKT_SRC_DETECT_RELOAD_FLUSH, TmModule_::PktAcqBreakLoop, TmModule_::PktAcqLoop, SC_ATOMIC_GET, SC_ERR_LIVE_RULE_SWAP, SCClassConfLoadClassficationConfigFile(), SCCondSignal, SCEnter, SCLogDebug, SCLogError, SCLogInfo, SCMalloc, SCMutexLock, SCMutexUnlock, SCRConfLoadReferenceConfigFile(), DetectEngineCtx_::sig_stat, DetectEngineCtx_::sigerror, SigGroupHeadHashInit(), SinglePatternMatchDefaultMatcher(), TmSlot_::slot_next, DetectEnginePktInspectionEngine::sm_list, DetectEnginePktInspectionEngine::smd, DetectEngineCtx_::spm_global_thread_ctx, DetectEngineCtx_::spm_matcher, spm_table, SpmInitGlobalThreadCtx(), SRepInit(), SRepReloadComplete(), strlcpy(), suricata_ctl_flags, TAILQ_INIT, ThresholdHashInit(), THV_CAPTURE_INJECT_PKT, THV_RUNNING_DONE, TM_FLAG_DETECT_TM, TM_FLAG_RECEIVE_TM, TmSlot_::tm_id, ThreadVars_::tm_slots, TmModuleGetById(), TmThreadsCheckFlag(), TmThreadsSetFlag(), trans_q, DetectEnginePktInspectionEngine::transforms, tv_root, tv_root_lock, TVT_PPT, type, DetectEngineCtx_::type, unlikely, DetectEnginePktInspectionEngine::v1, VarNameStoreSetupStaging(), and DetectEngineCtx_::version.

Referenced by DetectIpv4hdrRegister(), DetectIpv6hdrRegister(), DetectTcphdrRegister(), and DetectUdphdrRegister().

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int DetectEngineLoadTenantBlocking	(	uint32_t	tenant_id,
		const char *	yaml
	)

Load a tenant and wait for loading to complete.

Definition at line 3394 of file detect-engine.c.

References DetectLoadersSync().

Referenced by UnixSocketPcapFile().

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int DetectEngineMoveToFreeList ( DetectEngineCtx * de_ctx )

Definition at line 3909 of file detect-engine.c.

References DetectEngineMasterCtx_::free_list, DetectEngineMasterCtx_::list, DetectEngineMasterCtx_::lock, next, DetectEngineCtx_::next, DetectEngineCtx_::ref_cnt, SCLogDebug, SCMutexLock, and SCMutexUnlock.

Referenced by DetectEngineMultiTenantEnabled(), DetectEngineReload(), DetectReplaceFreeInternal(), GlobalsInitPreConfig(), and UnixSocketPcapFile().

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int DetectEngineMTApply ( void )

Definition at line 4100 of file detect-engine.c.

References DETECT_ENGINE_TYPE_DD_STUB, DETECT_ENGINE_TYPE_MT_STUB, DETECT_ENGINE_TYPE_NORMAL, DetectEngineCtxInitStubForMT(), DetectEnginePruneFreeList(), DetectEngineMasterCtx_::list, DetectEngineMasterCtx_::lock, DetectEngineCtx_::next, SCLogDebug, SCLogInfo, SCMutexLock, SCMutexUnlock, DetectEngineCtx_::tenant_id, DetectEngineMasterCtx_::tenant_selector, TENANT_SELECTOR_UNKNOWN, and DetectEngineCtx_::type.

Referenced by UnixSocketPcapFile().

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int DetectEngineMultiTenantEnabled ( void )

TODO locking? Not needed if this is a one time setting at startup

Definition at line 3200 of file detect-engine.c.

References ConfGetNode(), DetectEngineCtx_::config_prefix, ConfYamlLoadFileWithPrefix(), DETECT_ENGINE_TYPE_TENANT, DetectEngineAddToMaster(), DetectEngineCtxFree(), DetectEngineCtxInitWithPrefix(), DetectEngineDeReference(), DetectEngineGetByTenantId(), DetectEngineMoveToFreeList(), DetectEngineCtx_::loader_id, DetectEngineMasterCtx_::multi_tenant_enabled, SC_ERR_CONF_YAML_ERROR, SC_ERR_FOPEN, SC_ERR_INITIALIZATION, SC_ERR_MT_DUPLICATE_TENANT, SC_ERR_NO_RULES_LOADED, SCLogDebug, SCLogError, SigLoadSignatures(), DetectEngineCtx_::tenant_id, and DetectEngineCtx_::type.

Referenced by DetectEngineThreadCtxInit(), SigGroupBuild(), and UnixSocketPcapFile().

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int DetectEngineMultiTenantSetup ( void )

setup multi-detect / multi-tenancy

See if MT is enabled. If so, setup the selector, tenants and mappings. Tenants and mappings are optional, and can also dynamically be added and removed from the unix socket.

Definition at line 3543 of file detect-engine.c.

References ByteExtractStringUint32(), ConfGet(), ConfGetBool(), ConfGetNode(), ConfNodeLookupChild(), ConfUnixSocketIsEnable(), ConfYamlLoadFileWithPrefix(), DetectLoadersInit(), DetectLoadersSync(), DetectLoaderThreadSpawn(), LiveDevice_::dev, EngineModeIsIPS(), Packet_::livedev, DetectEngineMasterCtx_::lock, DetectEngineSyncer_::m, DetectEngineMasterCtx_::multi_tenant_enabled, next, DetectEngineTenantMapping_::next, SC_ERR_CONF_YAML_ERROR, SC_ERR_INVALID_ARGUMENT, SC_ERR_INVALID_VALUE, SC_ERR_MT_NO_MAPPING, SCCalloc, SCFree, SCLogDebug, SCLogError, SCLogInfo, SCLogNotice, SCLogWarning, SCMutexLock, SCMutexUnlock, TAILQ_FOREACH, DetectEngineThreadCtx_::tenant_array, DetectEngineThreadCtx_::tenant_array_size, LiveDevice_::tenant_id, DetectEngineTenantMapping_::tenant_id, DetectEngineMasterCtx_::tenant_mapping_list, DetectEngineMasterCtx_::tenant_selector, TENANT_SELECTOR_DIRECT, TENANT_SELECTOR_LIVEDEV, TENANT_SELECTOR_UNKNOWN, TENANT_SELECTOR_VLAN, TmModuleDetectLoaderRegister(), TmThreadContinueDetectLoaderThreads(), DetectEngineTenantMapping_::traffic_id, ConfNode_::val, VarNameStoreActivateStaging(), Packet_::vlan_id, and Packet_::vlan_idx.

Referenced by PostRunDeinit().

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int DetectEngineMustParseMetadata ( void )

Definition at line 4165 of file detect-engine.c.

Referenced by DetectMetadataHashFree(), and DetectMetadataHashInit().

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bool DetectEnginePktInspectionRun	(	ThreadVars *	tv,
		DetectEngineThreadCtx *	det_ctx,
		const Signature *	s,
		Flow *	f,
		Packet *	p,
		uint8_t *	alert_flags
	)

Definition at line 1386 of file detect-engine.c.

References DetectEnginePktInspectionEngine::Callback, Signature_::id, DetectEnginePktInspectionEngine::next, Signature_::pkt_inspect, SCCalloc, SCEnter, SCLogDebug, DetectEnginePktInspectionEngine::smd, and DetectEnginePktInspectionEngine::v1.

Referenced by SigMatchSignaturesGetSgh().

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int DetectEnginePktInspectionSetup ( Signature * s )

Definition at line 1431 of file detect-engine.c.

References DETECT_SM_LIST_MATCH, DETECT_SM_LIST_PMATCH, Signature_::id, Signature_::init_data, SignatureInitData_::init_flags, SCLogDebug, SIG_FLAG_INIT_STATE_MATCH, and Signature_::sm_arrays.

Referenced by SigAddressPrepareStage4().

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void DetectEnginePruneFreeList ( void )

Definition at line 3960 of file detect-engine.c.

References DetectEngineCtxFree(), DetectEngineMasterCtx_::free_list, DetectEngineMasterCtx_::lock, next, DetectEngineCtx_::next, DetectEngineCtx_::ref_cnt, SCLogDebug, SCMutexLock, and SCMutexUnlock.

Referenced by DetectEngineMTApply(), DetectEngineReload(), DetectReplaceFreeInternal(), GlobalsInitPreConfig(), and UnixSocketPcapFile().

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DetectEngineCtx* DetectEngineReference ( DetectEngineCtx * )

Definition at line 3191 of file detect-engine.c.

References DetectEngineCtx_::ref_cnt.

Referenced by DetectEngineThreadCtxInit().

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void DetectEngineRegisterTests ( void )

Definition at line 4466 of file detect-engine.c.

References UtRegisterTest().

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int DetectEngineReload ( const SCInstance * suri )

Reload the detection engine.

Parameters

filename YAML file to load for the detect config

Return values

-1	error
0	ok

Definition at line 3999 of file detect-engine.c.

References HashTable_::array_size, SCInstance_::conf_filename, ConfDump(), ConfGetNode(), ConfYamlLoadFileWithPrefix(), DETECT_ENGINE_TYPE_DD_STUB, DETECT_ENGINE_TYPE_NORMAL, DetectEngineAddToMaster(), DetectEngineBumpVersion(), DetectEngineCtxFree(), DetectEngineCtxInitWithPrefix(), DetectEngineDeReference(), DetectEngineGetCurrent(), DetectEngineMoveToFreeList(), DetectEnginePruneFreeList(), SC_ERR_CONF_YAML_ERROR, SC_ERR_INITIALIZATION, SCLogDebug, SCLogError, SCLogNotice, SCInstance_::sig_file, SCInstance_::sig_file_exclusive, SigLoadSignatures(), DetectEngineThreadCtx_::tenant_id, and DetectEngineCtx_::type.

Referenced by PostRunDeinit().

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int DetectEngineReloadIsIdle ( void )

Definition at line 1501 of file detect-engine.c.

References DetectEngineSyncer_::m, SCMutexLock, SCMutexUnlock, and DetectEngineSyncer_::state.

int DetectEngineReloadIsStart ( void )

Definition at line 1481 of file detect-engine.c.

References DetectEngineSyncer_::m, RELOAD, SCMutexLock, SCMutexUnlock, and DetectEngineSyncer_::state.

Referenced by PostRunDeinit().

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void DetectEngineReloadSetIdle ( void )

Definition at line 1493 of file detect-engine.c.

References IDLE, DetectEngineSyncer_::m, SCMutexLock, SCMutexUnlock, and DetectEngineSyncer_::state.

Referenced by PostRunDeinit().

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int DetectEngineReloadStart ( void )

Definition at line 1467 of file detect-engine.c.

References DetectEngineSyncer_::m, RELOAD, SCMutexLock, SCMutexUnlock, and DetectEngineSyncer_::state.

Referenced by PostRunDeinit().

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int DetectEngineReloadTenantBlocking	(	uint32_t	tenant_id,
		const char *	yaml,
		int	reload_cnt
	)

Reload a tenant and wait for loading to complete.

Definition at line 3408 of file detect-engine.c.

References ByteExtractStringUint16(), ByteExtractStringUint32(), ConfNodeLookupChild(), DetectEngineTentantRegisterLivedev(), DetectEngineTentantRegisterVlanId(), DetectLoadersSync(), LiveDevice_::id, LiveGetDevice(), next, SC_ERR_INVALID_ARGUMENT, SC_ERR_MT_NO_MAPPING, SCLogError, SCLogWarning, TAILQ_FOREACH, LiveDevice_::tenant_id, LiveDevice_::tenant_id_set, and ConfNode_::val.

Referenced by UnixSocketPcapFile().

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void DetectEngineResetMaxSigId ( DetectEngineCtx * )

Definition at line 2447 of file detect-engine.c.

Referenced by SigCleanSignatures().

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void DetectEngineSetParseMetadata ( void )

Definition at line 4155 of file detect-engine.c.

Referenced by DetectMetadataHashFree().

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int DetectEngineTentantRegisterLivedev	(	uint32_t	tenant_id,
		int	device_id
	)

Definition at line 3811 of file detect-engine.c.

References TENANT_SELECTOR_LIVEDEV.

Referenced by DetectEngineReloadTenantBlocking().

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int DetectEngineTentantRegisterPcapFile ( uint32_t tenant_id )

Definition at line 3826 of file detect-engine.c.

References SCLogInfo, and TENANT_SELECTOR_DIRECT.

Referenced by UnixSocketPcapFile().

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int DetectEngineTentantRegisterVlanId	(	uint32_t	tenant_id,
		uint16_t	vlan_id
	)

Definition at line 3816 of file detect-engine.c.

References TENANT_SELECTOR_VLAN.

Referenced by DetectEngineReloadTenantBlocking(), and UnixSocketPcapFile().

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int DetectEngineTentantUnregisterPcapFile ( uint32_t tenant_id )

Definition at line 3832 of file detect-engine.c.

References Packet_::pcap_v, SCLogInfo, PcapPacketVars_::tenant_id, and TENANT_SELECTOR_DIRECT.

Referenced by UnixSocketPcapFile().

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int DetectEngineTentantUnregisterVlanId	(	uint32_t	tenant_id,
		uint16_t	vlan_id
	)

Definition at line 3821 of file detect-engine.c.

References TENANT_SELECTOR_VLAN.

Referenced by UnixSocketPcapFile().

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TmEcode DetectEngineThreadCtxDeinit	(	ThreadVars *	,
		void *
	)

Definition at line 2978 of file detect-engine.c.

References HashTableFree(), DetectEngineThreadCtx_::mt_det_ctxs_hash, SC_ERR_INVALID_ARGUMENTS, SCLogWarning, and TM_ECODE_OK.

Referenced by DetectEngineInspectPktBufferGeneric(), and DetectEngineThreadCtxInit().

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TmEcode DetectEngineThreadCtxInit	(	ThreadVars *	tv,
		void *	initdata,
		void **	data
	)

initialize thread specific detection engine context

Note: there is a special case when using delayed detect. In this case the function is called twice per thread. The first time the rules are not yet loaded. de_ctx->delayed_detect_initialized will be 0. The 2nd time they will be loaded. de_ctx->delayed_detect_initialized will be 1. This is needed to do the per thread counter registration before the packet runtime starts. In delayed detect mode, the first call will return a NULL ptr through the data ptr.

Parameters

tv	ThreadVars for this thread
initdata	pointer to de_ctx
data[out]	pointer to store our thread detection ctx

Return values

TM_ECODE_OK	if all went well
TM_ECODE_FAILED	on serious erro

alert counter setup

Definition at line 2770 of file detect-engine.c.

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void DetectEngineUnsetParseMetadata ( void )

Definition at line 4160 of file detect-engine.c.

Referenced by DetectMetadataHashFree().

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void DetectPktInspectEngineRegister	(	const char *	name,
		InspectionBufferGetPktDataPtr	GetPktData,
		InspectionBufferPktInspectFunc	Callback
	)

register inspect engine at start up time

Note: errors are fatal

Definition at line 128 of file detect-engine.c.

References BUG_ON, DetectEnginePktInspectionEngine::Callback, DETECT_SM_LIST_MATCH, DetectBufferTypeGetByName(), DetectBufferTypeRegister(), FatalError, DetectEnginePktInspectionEngine::GetData, DetectEnginePktInspectionEngine::next, SC_ERR_INITIALIZATION, SC_ERR_INVALID_ARGUMENTS, SCCalloc, SCLogError, DetectEnginePktInspectionEngine::sm_list, unlikely, and DetectEnginePktInspectionEngine::v1.

Referenced by DetectIpv4hdrRegister(), DetectIpv6hdrRegister(), DetectTcphdrRegister(), and DetectUdphdrRegister().

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int DetectRegisterThreadCtxGlobalFuncs	(	const char *	name,
		void ()(void *)	InitFunc,
		void *	data,
		void()(void )	FreeFunc
	)

Register Thread keyword context Funcs (Global)

IDs stay static over reloads and between tenants

Parameters

name	keyword name for error printing
InitFunc	function ptr
FreeFunc	function ptr

Return values

id	for retrieval of ctx at runtime
-1	on error

Definition at line 3079 of file detect-engine.c.

References BUG_ON, DetectEngineThreadKeywordCtxItem_::data, DetectEngineThreadKeywordCtxItem_::FreeFunc, DetectEngineThreadKeywordCtxItem_::id, DetectEngineThreadKeywordCtxItem_::InitFunc, DetectEngineMasterCtx_::keyword_id, DetectEngineMasterCtx_::keyword_list, DetectEngineThreadKeywordCtxItem_::name, DetectEngineThreadKeywordCtxItem_::next, SCCalloc, and unlikely.

Referenced by DetectHttpHeaderNamesRegister(), DetectHttpHeaderRegister(), and DetectHttpStartRegister().

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const char* DetectSigmatchListEnumToString ( enum DetectSigmatchListEnum type )

Definition at line 4170 of file detect-engine.c.

References DETECT_SM_LIST_BASE64_DATA, DETECT_SM_LIST_MATCH, DETECT_SM_LIST_MAX, DETECT_SM_LIST_PMATCH, DETECT_SM_LIST_POSTMATCH, DETECT_SM_LIST_SUPPRESS, DETECT_SM_LIST_THRESHOLD, and DETECT_SM_LIST_TMATCH.

Referenced by CleanupFPAnalyzer(), EngineAnalysisRules2(), and SCProfilingKeywordsGlobalInit().

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void* DetectThreadCtxGetGlobalKeywordThreadCtx	(	DetectEngineThreadCtx *	det_ctx,
		int	id
	)

Retrieve thread local keyword ctx by id.

Parameters

det_ctx	detection engine thread ctx to retrieve the ctx from
id	id of the ctx returned by DetectRegisterThreadCtxInitFunc at keyword init.

Return values

ctx	or NULL on error

Definition at line 3123 of file detect-engine.c.

References DetectEngineThreadCtx_::global_keyword_ctxs_array, and DetectEngineThreadCtx_::global_keyword_ctxs_size.

Referenced by HttpHeaderGetBufferSpaceForTXID().

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void InspectionBufferApplyTransforms	(	InspectionBuffer *	buffer,
		const DetectEngineTransforms *	transforms
	)

Definition at line 1140 of file detect-engine.c.

References DetectEngineCtx_::app_inspect_engines, DetectEngineCtx_::app_mpms_list, DetectEngineCtx_::buffer_type_hash, DetectEngineCtx_::buffer_type_id, DetectEngineCtx_::buffer_type_map, DetectEngineCtx_::buffer_type_map_elements, BUG_ON, DetectBufferType_::description, DETECT_SM_LIST_DYNAMIC_START, DETECT_TRANSFORMS_MAX, DetectMpmInitializeAppMpms(), DetectMpmInitializePktMpms(), HashListTableFree(), HashListTableGetListData, HashListTableGetListHead(), HashListTableGetListNext, HashListTableInit(), DetectBufferType_::id, DetectBufferType_::mpm, DetectEngineAppInspectionEngine_::next, DetectEnginePktInspectionEngine::next, next, DetectBufferMpmRegistery_::next, DetectBufferType_::packet, DetectEngineCtx_::pkt_inspect_engines, DetectEngineCtx_::pkt_mpms_list, PrefilterDeinit(), PrefilterInit(), SCCalloc, SCFree, SCLogDebug, DetectBufferType_::SetupCallback, sigmatch_table, DetectBufferType_::string, SigTableElmt_::Transform, DetectEngineTransforms::transforms, and DetectBufferType_::ValidateCallback.

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void InspectionBufferCheckAndExpand	(	InspectionBuffer *	buffer,
		uint32_t	min_size
	)

make sure that the buffer has at least 'min_size' bytes Expand the buffer if necessary

Definition at line 1111 of file detect-engine.c.

References InspectionBuffer::buf, likely, SCRealloc, and InspectionBuffer::size.

Referenced by FileSwfDecompression(), and InspectionBufferCopy().

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void InspectionBufferClean ( DetectEngineThreadCtx * det_ctx )

Definition at line 1007 of file detect-engine.c.

References DetectEngineThreadCtx_::buffers, InspectionBufferMultipleForList::init, InspectionBuffer::inspect, DetectEngineThreadCtx_::inspect, InspectionBufferMultipleForList::inspection_buffers, InspectionBufferMultipleForList::max, DetectEngineThreadCtx_::multi_inspect, DetectEngineThreadCtx_::to_clear_idx, and DetectEngineThreadCtx_::to_clear_queue.

Referenced by SigMatchSignaturesGetSgh().

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void InspectionBufferCopy	(	InspectionBuffer *	buffer,
		uint8_t *	buf,
		uint32_t	buf_len
	)

Definition at line 1128 of file detect-engine.c.

References InspectionBuffer::buf, InspectionBuffer::inspect, InspectionBuffer::inspect_len, InspectionBufferCheckAndExpand(), MIN, and InspectionBuffer::size.

Referenced by DetectTransformCompressWhitespaceRegister(), DetectTransformDotPrefixRegister(), DetectTransformMd5Register(), DetectTransformSha1Register(), DetectTransformSha256Register(), and DetectTransformStripWhitespaceRegister().

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void InspectionBufferFree ( InspectionBuffer * buffer )

Definition at line 1099 of file detect-engine.c.

References InspectionBuffer::buf, and SCFree.

Referenced by DetectEngineThreadCtxInit(), DetectTransformCompressWhitespaceRegister(), DetectTransformDotPrefixRegister(), DetectTransformMd5Register(), DetectTransformSha1Register(), DetectTransformSha256Register(), and DetectTransformStripWhitespaceRegister().

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InspectionBuffer* InspectionBufferGet	(	DetectEngineThreadCtx *	det_ctx,
		const int	list_id
	)

Definition at line 1033 of file detect-engine.c.

References DetectEngineThreadCtx_::buffers, InspectionBuffer::inspect, DetectEngineThreadCtx_::inspect, DetectEngineThreadCtx_::to_clear_idx, and DetectEngineThreadCtx_::to_clear_queue.

Referenced by DetectHttpClientBodyRegister(), DetectHttpCookieRegister(), DetectHttpHHRegister(), DetectHttpMethodRegister(), DetectHttpRawHeaderRegister(), DetectHttpRequestLineRegister(), DetectHttpResponseLineRegister(), DetectHttpStatCodeRegister(), DetectHttpStatMsgRegister(), DetectHttpUARegister(), DetectHttpUriSetup(), DetectIpv4hdrRegister(), DetectIpv6hdrRegister(), DetectSNMPCommunityRegister(), DetectTcphdrRegister(), DetectTemplateBufferRegister(), DetectTlsFingerprintRegister(), DetectTlsIssuerRegister(), DetectTlsJa3HashRegister(), DetectTlsJa3SHashRegister(), DetectTlsJa3SStringRegister(), DetectTlsJa3StringRegister(), DetectTlsSerialRegister(), DetectTlsSniRegister(), DetectTlsSubjectRegister(), and DetectUdphdrRegister().

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InspectionBufferMultipleForList* InspectionBufferGetMulti	(	DetectEngineThreadCtx *	det_ctx,
		const int	list_id
	)

Definition at line 1072 of file detect-engine.c.

References DetectEngineThreadCtx_::buffers, InspectionBufferMultipleForList::init, DetectEngineThreadCtx_::multi_inspect, DetectEngineThreadCtx_::to_clear_idx, and DetectEngineThreadCtx_::to_clear_queue.

Referenced by DetectFilemagicRegister(), DetectFilenameRegister(), and DetectTlsCertsRegister().

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void InspectionBufferInit	(	InspectionBuffer *	buffer,
		uint32_t	initial_size
	)

Definition at line 1082 of file detect-engine.c.

References InspectionBuffer::buf, SCCalloc, and InspectionBuffer::size.

Referenced by DetectTransformCompressWhitespaceRegister(), DetectTransformDotPrefixRegister(), DetectTransformMd5Register(), DetectTransformSha1Register(), DetectTransformSha256Register(), and DetectTransformStripWhitespaceRegister().

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InspectionBuffer* InspectionBufferMultipleForListGet	(	InspectionBufferMultipleForList *	fb,
		uint32_t	local_id
	)

for a InspectionBufferMultipleForList get a InspectionBuffer

Parameters

fb	the multiple buffer array
local_id	the index to get a buffer
buffer	the inspect buffer or NULL in case of error

Definition at line 1046 of file detect-engine.c.

References InspectionBufferMultipleForList::inspection_buffers, MAX, InspectionBufferMultipleForList::max, SCLogDebug, SCRealloc, and InspectionBufferMultipleForList::size.

Referenced by DetectFilemagicRegister(), DetectFilenameRegister(), and DetectTlsCertsRegister().

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void InspectionBufferSetup	(	InspectionBuffer *	buffer,
		const uint8_t *	data,
		const uint32_t	data_len
	)

setup the buffer with our initial data

Definition at line 1092 of file detect-engine.c.

References InspectionBuffer::inspect, InspectionBuffer::inspect_len, InspectionBuffer::len, InspectionBuffer::orig, and InspectionBuffer::orig_len.

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Macros

Functions

Detailed Description

Macro Definition Documentation

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