detect-engine.c File Reference

#include "suricata-common.h"
#include "suricata.h"
#include "detect.h"
#include "flow.h"
#include "flow-private.h"
#include "flow-util.h"
#include "flow-worker.h"
#include "conf.h"
#include "conf-yaml-loader.h"
#include "datasets.h"
#include "app-layer-parser.h"
#include "app-layer-events.h"
#include "app-layer-htp.h"
#include "detect-parse.h"
#include "detect-engine-sigorder.h"
#include "detect-engine-build.h"
#include "detect-engine-siggroup.h"
#include "detect-engine-address.h"
#include "detect-engine-port.h"
#include "detect-engine-prefilter.h"
#include "detect-engine-mpm.h"
#include "detect-engine-iponly.h"
#include "detect-engine-tag.h"
#include "detect-engine-frame.h"
#include "detect-engine-file.h"
#include "detect-engine.h"
#include "detect-engine-state.h"
#include "detect-engine-payload.h"
#include "detect-fast-pattern.h"
#include "detect-byte-extract.h"
#include "detect-content.h"
#include "detect-uricontent.h"
#include "detect-tcphdr.h"
#include "detect-engine-threshold.h"
#include "detect-engine-content-inspection.h"
#include "detect-engine-loader.h"
#include "detect-engine-alert.h"
#include "util-classification-config.h"
#include "util-reference-config.h"
#include "util-threshold-config.h"
#include "util-error.h"
#include "util-hash.h"
#include "util-byte.h"
#include "util-debug.h"
#include "util-unittest.h"
#include "util-action.h"
#include "util-magic.h"
#include "util-signal.h"
#include "util-spm.h"
#include "util-device-private.h"
#include "util-var-name.h"
#include "util-path.h"
#include "util-profiling.h"
#include "util-validate.h"
#include "util-hash-string.h"
#include "util-enum.h"
#include "util-conf.h"
#include "tm-threads.h"
#include "runmodes.h"
#include "reputation.h"
#include "util-hash-lookup3.h"

Go to the source code of this file.

Data Structures
struct	DetectEngineSyncer_
struct	TenantLoaderCtx_

Macros
#define	DETECT_ENGINE_DEFAULT_INSPECTION_RECURSION_LIMIT   3000

Typedefs
typedef struct DetectEngineSyncer_	DetectEngineSyncer
typedef struct TenantLoaderCtx_	TenantLoaderCtx

Enumerations
enum	DetectEngineSyncState { IDLE, RELOAD }

Functions
const char *	DetectTableToString (enum DetectTable table)
void	DetectPktInspectEngineRegister (const char *name, InspectionBufferGetPktDataPtr GetPktData, InspectionBufferPktInspectFunc Callback)
	register inspect engine at start up time More...
void	DetectAppLayerInspectEngineRegister (const char *name, AppProto alproto, uint32_t dir, int progress, InspectEngineFuncPtr Callback, InspectionBufferGetDataPtr GetData)
	Registers an app inspection engine. More...
void	DetectAppLayerInspectEngineRegisterSingle (const char *name, AppProto alproto, uint32_t dir, int progress, InspectEngineFuncPtr Callback, InspectionSingleBufferGetDataPtr GetData)
void	DetectEngineFrameInspectEngineRegister (DetectEngineCtx *de_ctx, const char *name, int dir, InspectionBufferFrameInspectFunc Callback, AppProto alproto, uint8_t type)
	register inspect engine at start up time More...
int	DetectEngineAppInspectionEngine2Signature (DetectEngineCtx *de_ctx, Signature *s)
void	DetectEngineAppInspectionEngineSignatureFree (DetectEngineCtx *de_ctx, Signature *s)
	free app inspect engines for a signature More...
int	DetectBufferTypeMaxId (void)
int	DetectBufferTypeRegister (const char *name)
void	DetectBufferTypeSupportsMultiInstance (const char *name)
void	DetectBufferTypeSupportsFrames (const char *name)
void	DetectBufferTypeSupportsPacket (const char *name)
void	DetectBufferTypeSupportsMpm (const char *name)
void	DetectBufferTypeSupportsTransformations (const char *name)
int	DetectBufferTypeGetByName (const char *name)
const DetectBufferType *	DetectEngineBufferTypeGetById (const DetectEngineCtx *de_ctx, const int id)
const char *	DetectEngineBufferTypeGetNameById (const DetectEngineCtx *de_ctx, const int id)
int	DetectEngineBufferTypeRegisterWithFrameEngines (DetectEngineCtx *de_ctx, const char *name, const int direction, const AppProto alproto, const uint8_t frame_type)
int	DetectEngineBufferTypeRegister (DetectEngineCtx *de_ctx, const char *name)
void	DetectBufferTypeSetDescriptionByName (const char *name, const char *desc)
const char *	DetectEngineBufferTypeGetDescriptionById (const DetectEngineCtx *de_ctx, const int id)
const char *	DetectBufferTypeGetDescriptionByName (const char *name)
void	DetectEngineBufferTypeSupportsFrames (DetectEngineCtx *de_ctx, const char *name)
void	DetectEngineBufferTypeSupportsPacket (DetectEngineCtx *de_ctx, const char *name)
void	DetectEngineBufferTypeSupportsMpm (DetectEngineCtx *de_ctx, const char *name)
void	DetectEngineBufferTypeSupportsTransformations (DetectEngineCtx *de_ctx, const char *name)
bool	DetectEngineBufferTypeSupportsMultiInstanceGetById (const DetectEngineCtx *de_ctx, const int id)
bool	DetectEngineBufferTypeSupportsPacketGetById (const DetectEngineCtx *de_ctx, const int id)
bool	DetectEngineBufferTypeSupportsMpmGetById (const DetectEngineCtx *de_ctx, const int id)
bool	DetectEngineBufferTypeSupportsFramesGetById (const DetectEngineCtx *de_ctx, const int id)
void	DetectBufferTypeRegisterSetupCallback (const char *name, void(*SetupCallback)(const DetectEngineCtx *, Signature *))
void	DetectEngineBufferRunSetupCallback (const DetectEngineCtx *de_ctx, const int id, Signature *s)
void	DetectBufferTypeRegisterValidateCallback (const char *name, bool(*ValidateCallback)(const Signature *, const char **sigerror, const DetectBufferType *))
bool	DetectEngineBufferRunValidateCallback (const DetectEngineCtx *de_ctx, const int id, const Signature *s, const char **sigerror)
bool	DetectBufferIsPresent (const Signature *s, const uint32_t buf_id)
bool	DetectEngineBufferTypeValidateTransform (DetectEngineCtx *de_ctx, int sm_list, const uint8_t *content, uint16_t content_len, const char **namestr)
	Check content byte array compatibility with transforms. More...
void	DetectBufferTypeCloseRegistration (void)
int	DetectEngineBufferTypeGetByIdTransforms (DetectEngineCtx *de_ctx, const int id, TransformData *transforms, int transform_cnt)
bool	DetectEnginePktInspectionRun (ThreadVars *tv, DetectEngineThreadCtx *det_ctx, const Signature *s, Flow *f, Packet *p, uint8_t *alert_flags)
int	DetectEnginePktInspectionSetup (Signature *s)
int	DetectEngineReloadStart (void)
int	DetectEngineReloadIsStart (void)
void	DetectEngineReloadSetIdle (void)
int	DetectEngineReloadIsIdle (void)
uint8_t	DetectEngineInspectGenericList (DetectEngineCtx *de_ctx, DetectEngineThreadCtx *det_ctx, const struct 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...
uint8_t	DetectEngineInspectBufferSingle (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...
uint8_t	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...
void	DetectAppLayerMultiRegister (const char *name, AppProto alproto, uint32_t dir, int progress, InspectionMultiBufferGetDataPtr GetData, int priority)
InspectionBuffer *	DetectGetSingleData (struct DetectEngineThreadCtx_ *det_ctx, const DetectEngineTransforms *transforms, Flow *f, const uint8_t flow_flags, void *txv, const int list_id, InspectionSingleBufferGetDataPtr GetBuf)
InspectionBuffer *	DetectGetMultiData (struct DetectEngineThreadCtx_ *det_ctx, const DetectEngineTransforms *transforms, Flow *f, const uint8_t flow_flags, void *txv, const int list_id, uint32_t index, InspectionMultiBufferGetDataPtr GetBuf)
uint8_t	DetectEngineInspectMultiBufferGeneric (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)
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	InjectPacketsForFlush (ThreadVars **detect_tvs, int no_of_detect_tvs)
bool	DetectEngineMpmCachingEnabled (void)
const char *	DetectEngineMpmCachingGetPath (void)
DetectEngineCtx *	DetectEngineCtxInitStubForMT (void)
DetectEngineCtx *	DetectEngineCtxInitStubForDD (void)
DetectEngineCtx *	DetectEngineCtxInit (void)
DetectEngineCtx *	DetectEngineCtxInitWithPrefix (const char *prefix, uint32_t tenant_id)
void	DetectEngineCtxFree (DetectEngineCtx *de_ctx)
	Free a DetectEngineCtx:: More...
void	DetectEngineResetMaxSigId (DetectEngineCtx *de_ctx)
TmEcode	DetectEngineThreadCtxInit (ThreadVars *tv, void *initdata, void **data)
	initialize thread specific detection engine context More...
DetectEngineThreadCtx *	DetectEngineThreadCtxInitForReload (ThreadVars *tv, DetectEngineCtx *new_de_ctx, int mt)
TmEcode	DetectEngineThreadCtxDeinit (ThreadVars *tv, void *data)
int	DetectRegisterThreadCtxFuncs (DetectEngineCtx *de_ctx, const char *name, void *(*InitFunc)(void *), void *data, void(*FreeFunc)(void *), int mode)
	Register Thread keyword context Funcs. More...
int	DetectUnregisterThreadCtxFuncs (DetectEngineCtx *de_ctx, void *data, const char *name)
	Remove Thread keyword context registration. More...
void *	DetectThreadCtxGetKeywordThreadCtx (DetectEngineThreadCtx *det_ctx, int id)
	Retrieve thread local keyword ctx by id. 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...
int	DetectEngineEnabled (void)
	Check if detection is enabled. More...
uint32_t	DetectEngineGetVersion (void)
void	DetectEngineBumpVersion (void)
DetectEngineCtx *	DetectEngineGetCurrent (void)
DetectEngineCtx *	DetectEngineReference (DetectEngineCtx *de_ctx)
int	DetectEngineMultiTenantEnabled (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	DetectEngineReloadTenantsBlocking (const int reload_cnt)
	Reload all tenants and wait for loading to complete. More...
int	DetectEngineMultiTenantSetup (const bool unix_socket)
	setup multi-detect / multi-tenancy More...
int	DetectEngineTenantRegisterLivedev (uint32_t tenant_id, int device_id)
int	DetectEngineTenantRegisterVlanId (uint32_t tenant_id, uint16_t vlan_id)
int	DetectEngineTenantUnregisterVlanId (uint32_t tenant_id, uint16_t vlan_id)
int	DetectEngineTenantRegisterPcapFile (uint32_t tenant_id)
int	DetectEngineTenantUnregisterPcapFile (uint32_t tenant_id)
DetectEngineCtx *	DetectEngineGetByTenantId (uint32_t tenant_id)
void	DetectEngineDeReference (DetectEngineCtx **de_ctx)
int	DetectEngineAddToMaster (DetectEngineCtx *de_ctx)
int	DetectEngineMoveToFreeList (DetectEngineCtx *de_ctx)
void	DetectEnginePruneFreeList (void)
void	DetectEngineClearMaster (void)
int	DetectEngineReload (const SCInstance *suri)
	Reload the detection engine. More...
int	DetectEngineMTApply (void)
void	DetectEngineSetParseMetadata (void)
void	DetectEngineUnsetParseMetadata (void)
int	DetectEngineMustParseMetadata (void)
const char *	DetectSigmatchListEnumToString (enum DetectSigmatchListEnum type)
void	DetectEngineSetEvent (DetectEngineThreadCtx *det_ctx, uint8_t e)
bool	DetectMd5ValidateCallback (const Signature *s, const char **sigerror, const DetectBufferType *map)
void	SCDetectEngineRegisterRateFilterCallback (SCDetectRateFilterFunc fn, void *arg)
	Register a callback when a rate_filter has been applied to an alert. More...
int	DetectEngineThreadCtxGetJsonContext (DetectEngineThreadCtx *det_ctx)
void	DetectEngineRegisterTests (void)

Variables
const struct SignatureProperties	signature_properties [SIG_TYPE_MAX]

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.c.

Macro Definition Documentation

DETECT_ENGINE_DEFAULT_INSPECTION_RECURSION_LIMIT

#define DETECT_ENGINE_DEFAULT_INSPECTION_RECURSION_LIMIT   3000

Definition at line 96 of file detect-engine.c.

Typedef Documentation

DetectEngineSyncer

typedef struct DetectEngineSyncer_ DetectEngineSyncer

TenantLoaderCtx

typedef struct TenantLoaderCtx_ TenantLoaderCtx

Enumeration Type Documentation

DetectEngineSyncState

enum DetectEngineSyncState

Enumerator
IDLE	ready to start a reload
RELOAD	command main thread to do the reload

Definition at line 1884 of file detect-engine.c.

Function Documentation

DetectAppLayerInspectEngineRegister()

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

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.

Definition at line 272 of file detect-engine.c.

Referenced by DetectFileRegisterFileProtocols(), DetectRegisterAppLayerHookLists(), and SCDetectHelperBufferRegister().

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DetectAppLayerInspectEngineRegisterSingle()

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

Definition at line 294 of file detect-engine.c.

DetectAppLayerMultiRegister()

void DetectAppLayerMultiRegister	(	const char *	name,
		AppProto	alproto,
		uint32_t	dir,
		int	progress,
		InspectionMultiBufferGetDataPtr	GetData,
		int	priority
	)

Definition at line 2109 of file detect-engine.c.

DetectBufferIsPresent()

bool DetectBufferIsPresent	(	const Signature *	s,
		const uint32_t	buf_id
	)

Definition at line 1513 of file detect-engine.c.

References SignatureInitData_::buffer_index, SignatureInitData_::buffers, SignatureInitDataBuffer_::id, and Signature_::init_data.

DetectBufferTypeCloseRegistration()

void DetectBufferTypeCloseRegistration

(

void

)

Definition at line 1657 of file detect-engine.c.

References BUG_ON.

DetectBufferTypeGetByName()

int DetectBufferTypeGetByName

(

const char *

name

)

Definition at line 1279 of file detect-engine.c.

Referenced by DetectEngineAppInspectionEngine2Signature(), DetectFrameMpmRegister(), and DetectPktInspectEngineRegister().

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DetectBufferTypeGetDescriptionByName()

const char* DetectBufferTypeGetDescriptionByName

(

const char *

name

)

Definition at line 1396 of file detect-engine.c.

DetectBufferTypeMaxId()

int DetectBufferTypeMaxId

(

void

)

Definition at line 1036 of file detect-engine.c.

DetectBufferTypeRegister()

int DetectBufferTypeRegister

(

const char *

name

)

Definition at line 1215 of file detect-engine.c.

References BUG_ON.

Referenced by DetectPktInspectEngineRegister(), and SCDetectHelperBufferRegister().

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DetectBufferTypeRegisterSetupCallback()

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

Definition at line 1473 of file detect-engine.c.

References BUG_ON.

DetectBufferTypeRegisterValidateCallback()

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

Definition at line 1491 of file detect-engine.c.

References BUG_ON.

DetectBufferTypeSetDescriptionByName()

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

Definition at line 1376 of file detect-engine.c.

References BUG_ON.

DetectBufferTypeSupportsFrames()

void DetectBufferTypeSupportsFrames

(

const char *

name

)

Definition at line 1239 of file detect-engine.c.

References BUG_ON.

Referenced by DetectFrameMpmRegister().

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DetectBufferTypeSupportsMpm()

void DetectBufferTypeSupportsMpm

(

const char *

name

)

Definition at line 1259 of file detect-engine.c.

References BUG_ON.

Referenced by DetectFrameMpmRegister().

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DetectBufferTypeSupportsMultiInstance()

void DetectBufferTypeSupportsMultiInstance

(

const char *

name

)

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

References BUG_ON.

DetectBufferTypeSupportsPacket()

void DetectBufferTypeSupportsPacket

(

const char *

name

)

Definition at line 1249 of file detect-engine.c.

References BUG_ON.

DetectBufferTypeSupportsTransformations()

void DetectBufferTypeSupportsTransformations

(

const char *

name

)

Definition at line 1269 of file detect-engine.c.

References BUG_ON.

Referenced by DetectFrameMpmRegister().

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DetectEngineAddToMaster()

int DetectEngineAddToMaster

(

DetectEngineCtx *

de_ctx

)

Definition at line 4657 of file detect-engine.c.

References de_ctx, and SCLogDebug.

DetectEngineAppInspectionEngine2Signature()

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 800 of file detect-engine.c.

References SignatureInitData_::buffer_index, SignatureInitData_::buffers, de_ctx, DE_STATE_FLAG_BASE, DetectBufferTypeGetByName(), DetectEngineBufferTypeGetById(), FatalError, DetectBufferType_::frame, DetectEngineCtx_::frame_inspect_engines, SignatureInitDataBuffer_::head, SignatureInitDataBuffer_::id, Signature_::id, Signature_::init_data, SignatureInitData_::mpm_sm, SignatureInitData_::mpm_sm_list, DetectEngineFrameInspectionEngine::next, SCLogDebug, SigMatchList2DataArray(), and DetectEngineFrameInspectionEngine::sm_list.

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DetectEngineAppInspectionEngineSignatureFree()

void DetectEngineAppInspectionEngineSignatureFree	(	DetectEngineCtx *	de_ctx,
		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 930 of file detect-engine.c.

References Signature_::app_inspect, BUG_ON, SigMatchData_::ctx, de_ctx, Signature_::frame_inspect, SigTableElmt_::Free, SigMatchData_::is_last, next, DetectEngineAppInspectionEngine_::next, DetectEnginePktInspectionEngine::next, DetectEngineFrameInspectionEngine::next, Signature_::pkt_inspect, SCFree, sigmatch_table, DetectEngineAppInspectionEngine_::smd, DetectEnginePktInspectionEngine::smd, DetectEngineFrameInspectionEngine::smd, and SigMatchData_::type.

DetectEngineBufferRunSetupCallback()

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

Definition at line 1483 of file detect-engine.c.

References de_ctx, DetectEngineBufferTypeGetById(), and DetectBufferType_::SetupCallback.

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DetectEngineBufferRunValidateCallback()

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

Definition at line 1502 of file detect-engine.c.

References DetectEngineTransforms::cnt, de_ctx, DetectEngineBufferTypeGetById(), DetectBufferType_::transforms, and DetectBufferType_::ValidateCallback.

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DetectEngineBufferTypeGetById()

const DetectBufferType* DetectEngineBufferTypeGetById	(	const DetectEngineCtx *	de_ctx,
		const int	id
	)

Definition at line 1299 of file detect-engine.c.

References DetectEngineCtx_::buffer_type_hash_id, de_ctx, HashListTableLookup(), DetectBufferType_::id, and id.

Referenced by DetectEngineAppInspectionEngine2Signature(), DetectEngineBufferRunSetupCallback(), DetectEngineBufferRunValidateCallback(), DetectEngineBufferTypeGetByIdTransforms(), DetectEngineBufferTypeGetDescriptionById(), DetectEngineBufferTypeGetNameById(), DetectEngineBufferTypeSupportsFramesGetById(), DetectEngineBufferTypeSupportsMpmGetById(), DetectEngineBufferTypeSupportsMultiInstanceGetById(), DetectEngineBufferTypeSupportsPacketGetById(), and DetectEngineBufferTypeValidateTransform().

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DetectEngineBufferTypeGetByIdTransforms()

int DetectEngineBufferTypeGetByIdTransforms	(	DetectEngineCtx *	de_ctx,
		const int	id,
		TransformData *	transforms,
		int	transform_cnt
	)

Definition at line 1664 of file detect-engine.c.

References DetectEngineTransforms::cnt, de_ctx, DetectEngineBufferTypeGetById(), DetectBufferType_::name, SCLogDebug, SCLogError, strlcpy(), DetectBufferType_::supports_transforms, DetectEngineTransforms::transforms, and DetectBufferType_::transforms.

Referenced by DetectBufferGetActiveList().

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DetectEngineBufferTypeGetDescriptionById()

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

Definition at line 1387 of file detect-engine.c.

References de_ctx, DetectBufferType_::description, and DetectEngineBufferTypeGetById().

Referenced by EngineAnalysisFP().

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DetectEngineBufferTypeGetNameById()

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

Definition at line 1309 of file detect-engine.c.

References de_ctx, DetectEngineBufferTypeGetById(), and DetectBufferType_::name.

Referenced by DumpPatterns(), EngineAnalysisFP(), and EngineAnalysisRules2().

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DetectEngineBufferTypeRegister()

int DetectEngineBufferTypeRegister	(	DetectEngineCtx *	de_ctx,
		const char *	name
	)

Definition at line 1366 of file detect-engine.c.

Referenced by DetectEngineFrameInspectEngineRegister(), and DetectEngineFrameMpmRegister().

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DetectEngineBufferTypeRegisterWithFrameEngines()

int DetectEngineBufferTypeRegisterWithFrameEngines	(	DetectEngineCtx *	de_ctx,
		const char *	name,
		const int	direction,
		const AppProto	alproto,
		const uint8_t	frame_type
	)

Definition at line 1332 of file detect-engine.c.

DetectEngineBufferTypeSupportsFrames()

void DetectEngineBufferTypeSupportsFrames	(	DetectEngineCtx *	de_ctx,
		const char *	name
	)

Definition at line 1405 of file detect-engine.c.

Referenced by DetectEngineFrameMpmRegister().

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DetectEngineBufferTypeSupportsFramesGetById()

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

Definition at line 1464 of file detect-engine.c.

References de_ctx, DetectEngineBufferTypeGetById(), DetectBufferType_::frame, and SCLogDebug.

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DetectEngineBufferTypeSupportsMpm()

void DetectEngineBufferTypeSupportsMpm	(	DetectEngineCtx *	de_ctx,
		const char *	name
	)

Definition at line 1421 of file detect-engine.c.

Referenced by DetectEngineFrameMpmRegister().

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DetectEngineBufferTypeSupportsMpmGetById()

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

Definition at line 1455 of file detect-engine.c.

References de_ctx, DetectEngineBufferTypeGetById(), DetectBufferType_::mpm, and SCLogDebug.

Referenced by DetectGetLastSMFromMpmLists(), and FastPatternSupportEnabledForSigMatchList().

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DetectEngineBufferTypeSupportsMultiInstanceGetById()

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

Definition at line 1437 of file detect-engine.c.

References BOOL2STR, de_ctx, DetectEngineBufferTypeGetById(), DetectBufferType_::multi_instance, and SCLogDebug.

Referenced by DetectBufferGetActiveList().

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DetectEngineBufferTypeSupportsPacket()

void DetectEngineBufferTypeSupportsPacket	(	DetectEngineCtx *	de_ctx,
		const char *	name
	)

Definition at line 1413 of file detect-engine.c.

DetectEngineBufferTypeSupportsPacketGetById()

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

Definition at line 1446 of file detect-engine.c.

References de_ctx, DetectEngineBufferTypeGetById(), DetectBufferType_::packet, and SCLogDebug.

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DetectEngineBufferTypeSupportsTransformations()

void DetectEngineBufferTypeSupportsTransformations	(	DetectEngineCtx *	de_ctx,
		const char *	name
	)

Definition at line 1429 of file detect-engine.c.

Referenced by DetectEngineFrameMpmRegister().

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DetectEngineBufferTypeValidateTransform()

bool DetectEngineBufferTypeValidateTransform	(	DetectEngineCtx *	de_ctx,
		int	sm_list,
		const uint8_t *	content,
		uint16_t	content_len,
		const char **	namestr
	)

Check content byte array compatibility with transforms.

The "content" array is presented to the transforms so that each transform may validate that it's compatible with the transform.

When a transform indicates the byte array is incompatible, none of the subsequent transforms, if any, are invoked. This means the first validation failure terminates the loop.

Parameters

de_ctx	Detection engine context.
sm_list	The SM list id.
content	The byte array being validated
namestr	returns the name of the transform that is incompatible with content.

Return values

true	(false) If any of the transforms indicate the byte array is (is not) compatible.

Definition at line 1541 of file detect-engine.c.

References BUG_ON, DetectEngineTransforms::cnt, de_ctx, DetectEngineBufferTypeGetById(), SigTableElmt_::name, TransformData_::options, sigmatch_table, TransformData_::transform, DetectEngineTransforms::transforms, DetectBufferType_::transforms, and SigTableElmt_::TransformValidate.

Referenced by DetectContentSetup().

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DetectEngineBumpVersion()

void DetectEngineBumpVersion

(

void

)

Definition at line 3833 of file detect-engine.c.

DetectEngineClearMaster()

void DetectEngineClearMaster

(

void

)

Definition at line 4757 of file detect-engine.c.

Referenced by GlobalsDestroy().

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DetectEngineCtxFree()

void DetectEngineCtxFree

(

DetectEngineCtx *

de_ctx

)

Free a DetectEngineCtx::

Parameters

de_ctx

DetectEngineCtx:: to be freed

Definition at line 2643 of file detect-engine.c.

References MpmTableElmt_::ConfigDeinit, de_ctx, DetectEngineFreeFastPatternList(), DetectParseDupSigHashFree(), DetectEngineCtx_::filedata_config, DetectEngineCtx_::mpm_cfg, DetectEngineCtx_::mpm_matcher, mpm_table, MpmFactoryDeRegisterAllMpmCtxProfiles(), MpmStoreFree(), DetectEngineCtx_::profile_keyword_ctx, DetectEngineCtx_::profile_sgh_ctx, SCClassConfDeInitContext(), SCFree, SCProfilingKeywordDestroyCtx(), SCProfilingPrefilterDestroyCtx(), SCProfilingSghDestroyCtx(), SCRConfDeInitContext(), SCSigSignatureOrderingModuleCleanup(), DetectEngineCtx_::sig_array, SigCleanSignatures(), SigGroupCleanup(), SigGroupHeadHashFree(), DetectEngineCtx_::sm_types_prefilter, DetectEngineCtx_::sm_types_silent_error, DetectEngineCtx_::spm_global_thread_ctx, and SpmDestroyGlobalThreadCtx().

Referenced by LLVMFuzzerTestOneInput(), UTHGenericTest(), UTHPacketMatchSig(), UTHPacketMatchSigMpm(), and UTHParseSignature().

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DetectEngineCtxInit()

DetectEngineCtx* DetectEngineCtxInit

(

void

)

Definition at line 2604 of file detect-engine.c.

Referenced by DetectEngineCtxInitWithPrefix(), LLVMFuzzerTestOneInput(), UTHGenericTest(), UTHPacketMatchSig(), UTHPacketMatchSigMpm(), and UTHParseSignature().

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DetectEngineCtxInitStubForDD()

DetectEngineCtx* DetectEngineCtxInitStubForDD

(

void

)

Definition at line 2599 of file detect-engine.c.

DetectEngineCtxInitStubForMT()

DetectEngineCtx* DetectEngineCtxInitStubForMT

(

void

)

Definition at line 2594 of file detect-engine.c.

DetectEngineCtxInitWithPrefix()

DetectEngineCtx* DetectEngineCtxInitWithPrefix	(	const char *	prefix,
		uint32_t	tenant_id
	)

Definition at line 2609 of file detect-engine.c.

References DetectEngineCtxInit().

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DetectEngineDeReference()

void DetectEngineDeReference

(

DetectEngineCtx **

de_ctx

)

Definition at line 4633 of file detect-engine.c.

References BUG_ON, and de_ctx.

Referenced by GlobalsDestroy(), and SCDetectEngineRegisterRateFilterCallback().

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DetectEngineEnabled()

int DetectEngineEnabled

(

void

)

Check if detection is enabled.

Return values

bool	true or false

Definition at line 3809 of file detect-engine.c.

DetectEngineFrameInspectEngineRegister()

void DetectEngineFrameInspectEngineRegister	(	DetectEngineCtx *	de_ctx,
		const char *	name,
		int	dir,
		InspectionBufferFrameInspectFunc	Callback,
		AppProto	alproto,
		uint8_t	type
	)

register inspect engine at start up time

Note

errors are fatal

Definition at line 450 of file detect-engine.c.

References DetectEngineFrameInspectionEngine::alproto, BUG_ON, DetectEngineFrameInspectionEngine::Callback, de_ctx, DETECT_SM_LIST_MATCH, DetectEngineBufferTypeRegister(), DetectEngineFrameInspectionEngine::dir, FatalError, DetectEngineCtx_::frame_inspect_engines, name, SCCalloc, SCLogError, SIG_FLAG_TOSERVER, DetectEngineFrameInspectionEngine::sm_list, DetectEngineFrameInspectionEngine::sm_list_base, type, DetectEngineFrameInspectionEngine::type, unlikely, and DetectEngineFrameInspectionEngine::v1.

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DetectEngineGetByTenantId()

DetectEngineCtx* DetectEngineGetByTenantId

(

uint32_t

tenant_id

)

Definition at line 4607 of file detect-engine.c.

DetectEngineGetCurrent()

DetectEngineCtx* DetectEngineGetCurrent

(

void

)

Definition at line 3842 of file detect-engine.c.

Referenced by DetectEngineThreadCtxInit(), GlobalsDestroy(), and SCDetectEngineRegisterRateFilterCallback().

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DetectEngineGetVersion()

uint32_t DetectEngineGetVersion

(

void

)

Definition at line 3823 of file detect-engine.c.

References version.

DetectEngineInspectBufferGeneric()

uint8_t 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 2059 of file detect-engine.c.

References Flow_::alproto, AppLayerParserGetStateProgress(), de_ctx, 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(), flags, InspectionBuffer::flags, DetectEngineAppInspectionEngine_::GetData, InspectionBuffer::inspect, InspectionBuffer::inspect_len, InspectionBuffer::inspect_offset, DetectEngineAppInspectionEngine_::match_on_null, DetectEngineAppInspectionEngine_::mpm, offset, DetectEngineAppInspectionEngine_::progress, Flow_::proto, SCLogDebug, DetectEngineAppInspectionEngine_::sm_list, DetectEngineAppInspectionEngine_::smd, DetectEngineAppInspectionEngine_::transforms, unlikely, and DetectEngineAppInspectionEngine_::v2.

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DetectEngineInspectBufferSingle()

uint8_t DetectEngineInspectBufferSingle	(	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 1998 of file detect-engine.c.

References Flow_::alproto, AppLayerParserGetStateProgress(), de_ctx, 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(), DetectGetSingleData(), flags, InspectionBuffer::flags, DetectEngineAppInspectionEngine_::GetDataSingle, InspectionBuffer::inspect, InspectionBuffer::inspect_len, InspectionBuffer::inspect_offset, DetectEngineAppInspectionEngine_::match_on_null, DetectEngineAppInspectionEngine_::mpm, offset, DetectEngineAppInspectionEngine_::progress, Flow_::proto, SCLogDebug, DetectEngineAppInspectionEngine_::sm_list, DetectEngineAppInspectionEngine_::smd, DetectEngineAppInspectionEngine_::transforms, unlikely, and DetectEngineAppInspectionEngine_::v2.

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DetectEngineInspectGenericList()

uint8_t DetectEngineInspectGenericList	(	DetectEngineCtx *	de_ctx,
		DetectEngineThreadCtx *	det_ctx,
		const struct 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
sm	SigMatch to inspect
f	Flow
flags	app layer flags
state	App layer state

Return values

0	no match
1	match

Definition at line 1956 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, flags, SigMatchData_::is_last, KEYWORD_PROFILING_END, KEYWORD_PROFILING_START, SCLogDebug, sigmatch_table, DetectEngineAppInspectionEngine_::smd, and SigMatchData_::type.

Referenced by DetectRegisterAppLayerHookLists(), and SCDetectHelperBufferRegister().

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DetectEngineInspectMultiBufferGeneric()

uint8_t DetectEngineInspectMultiBufferGeneric	(	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
	)

Definition at line 2159 of file detect-engine.c.

References Flow_::alproto, AppLayerParserGetStateProgress(), de_ctx, DETECT_ENGINE_CONTENT_INSPECTION_MODE_STATE, DETECT_ENGINE_INSPECT_SIG_MATCH, DETECT_ENGINE_INSPECT_SIG_NO_MATCH, DetectEngineContentInspectionBuffer(), DetectGetMultiData(), flags, DetectEngineAppInspectionEngine_::GetMultiData, InspectionBuffer::inspect, DetectEngineAppInspectionEngine_::match_on_null, DetectEngineAppInspectionEngine_::mpm, DetectEngineAppInspectionEngine_::progress, Flow_::proto, DetectEngineAppInspectionEngine_::sm_list, DetectEngineAppInspectionEngine_::smd, DetectEngineAppInspectionEngine_::transforms, and DetectEngineAppInspectionEngine_::v2.

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DetectEngineInspectPktBufferGeneric()

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 2207 of file detect-engine.c.

References 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, DetectEngineContentInspection(), InspectionBuffer::flags, Packet_::flow, DetectEnginePktInspectionEngine::GetData, InspectionBuffer::inspect, InspectionBuffer::inspect_len, DetectEnginePktInspectionEngine::mpm, SCLogDebug, DetectEnginePktInspectionEngine::sm_list, DetectEnginePktInspectionEngine::smd, DetectEnginePktInspectionEngine::transforms, unlikely, and DetectEnginePktInspectionEngine::v1.

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DetectEngineLoadTenantBlocking()

int DetectEngineLoadTenantBlocking	(	uint32_t	tenant_id,
		const char *	yaml
	)

Load a tenant and wait for loading to complete.

Definition at line 4131 of file detect-engine.c.

DetectEngineMoveToFreeList()

int DetectEngineMoveToFreeList

(

DetectEngineCtx *

de_ctx

)

Definition at line 4717 of file detect-engine.c.

Referenced by GlobalsDestroy().

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DetectEngineMpmCachingEnabled()

bool DetectEngineMpmCachingEnabled

(

void

)

Definition at line 2464 of file detect-engine.c.

References SCConfGetBool().

Referenced by DetectEngineMpmCachingGetPath().

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DetectEngineMpmCachingGetPath()

const char* DetectEngineMpmCachingGetPath

(

void

)

Definition at line 2473 of file detect-engine.c.

References DetectEngineMpmCachingEnabled(), SCConfGet(), and SCLogInfo.

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DetectEngineMTApply()

int DetectEngineMTApply

(

void

)

Definition at line 4908 of file detect-engine.c.

DetectEngineMultiTenantEnabled()

int DetectEngineMultiTenantEnabled

(

void

)

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

Definition at line 3874 of file detect-engine.c.

DetectEngineMultiTenantSetup()

int DetectEngineMultiTenantSetup

(

const bool

unix_socket

)

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 4294 of file detect-engine.c.

References TENANT_SELECTOR_UNKNOWN.

DetectEngineMustParseMetadata()

int DetectEngineMustParseMetadata

(

void

)

Definition at line 4975 of file detect-engine.c.

Referenced by DetectMetadataHashInit().

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DetectEnginePktInspectionRun()

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

Definition at line 1814 of file detect-engine.c.

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

DetectEnginePktInspectionSetup()

int DetectEnginePktInspectionSetup

(

Signature *

s

)

Definition at line 1862 of file detect-engine.c.

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

DetectEnginePruneFreeList()

void DetectEnginePruneFreeList

(

void

)

Definition at line 4727 of file detect-engine.c.

DetectEngineReference()

DetectEngineCtx* DetectEngineReference

(

DetectEngineCtx *

de_ctx

)

Definition at line 3865 of file detect-engine.c.

References de_ctx, and DetectEngineCtx_::ref_cnt.

Referenced by DetectEngineThreadCtxInitForReload().

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DetectEngineRegisterTests()

void DetectEngineRegisterTests

(

void

)

Definition at line 5290 of file detect-engine.c.

References UtRegisterTest().

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DetectEngineReload()

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 4784 of file detect-engine.c.

References SCInstance_::conf_filename, and SCLogNotice.

Referenced by SuricataMainLoop().

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DetectEngineReloadIsIdle()

int DetectEngineReloadIsIdle

(

void

)

Definition at line 1932 of file detect-engine.c.

References SCMutexLock.

DetectEngineReloadIsStart()

int DetectEngineReloadIsStart

(

void

)

Definition at line 1912 of file detect-engine.c.

References SCMutexLock.

Referenced by SuricataMainLoop().

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DetectEngineReloadSetIdle()

void DetectEngineReloadSetIdle

(

void

)

Definition at line 1924 of file detect-engine.c.

References SCMutexLock.

Referenced by SuricataMainLoop().

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DetectEngineReloadStart()

int DetectEngineReloadStart

(

void

)

Definition at line 1898 of file detect-engine.c.

References SCMutexLock.

Referenced by SuricataMainLoop().

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DetectEngineReloadTenantBlocking()

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

Reload a tenant and wait for loading to complete.

Definition at line 4145 of file detect-engine.c.

DetectEngineReloadTenantsBlocking()

int DetectEngineReloadTenantsBlocking

(

const int

reload_cnt

)

Reload all tenants and wait for loading to complete.

Definition at line 4159 of file detect-engine.c.

DetectEngineResetMaxSigId()

void DetectEngineResetMaxSigId

(

DetectEngineCtx *

de_ctx

)

Definition at line 3055 of file detect-engine.c.

References de_ctx, and DetectEngineCtx_::signum.

Referenced by SigCleanSignatures().

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DetectEngineSetEvent()

void DetectEngineSetEvent	(	DetectEngineThreadCtx *	det_ctx,
		uint8_t	e
	)

Definition at line 5009 of file detect-engine.c.

References AppLayerDecoderEventsSetEventRaw(), DetectEngineThreadCtx_::decoder_events, and DetectEngineThreadCtx_::events.

Referenced by FileSwfDecompression(), FileSwfLzmaDecompression(), FileSwfZlibDecompression(), InspectionBufferMultipleForListGet(), and PostRuleMatchWorkQueueAppend().

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DetectEngineSetParseMetadata()

void DetectEngineSetParseMetadata

(

void

)

Definition at line 4965 of file detect-engine.c.

DetectEngineTenantRegisterLivedev()

int DetectEngineTenantRegisterLivedev	(	uint32_t	tenant_id,
		int	device_id
	)

Definition at line 4574 of file detect-engine.c.

DetectEngineTenantRegisterPcapFile()

int DetectEngineTenantRegisterPcapFile

(

uint32_t

tenant_id

)

Definition at line 4590 of file detect-engine.c.

References SCLogInfo, and TENANT_SELECTOR_DIRECT.

DetectEngineTenantRegisterVlanId()

int DetectEngineTenantRegisterVlanId	(	uint32_t	tenant_id,
		uint16_t	vlan_id
	)

Definition at line 4580 of file detect-engine.c.

DetectEngineTenantUnregisterPcapFile()

int DetectEngineTenantUnregisterPcapFile

(

uint32_t

tenant_id

)

Definition at line 4596 of file detect-engine.c.

References SCLogInfo, and TENANT_SELECTOR_DIRECT.

DetectEngineTenantUnregisterVlanId()

int DetectEngineTenantUnregisterVlanId	(	uint32_t	tenant_id,
		uint16_t	vlan_id
	)

Definition at line 4585 of file detect-engine.c.

DetectEngineThreadCtxDeinit()

TmEcode DetectEngineThreadCtxDeinit	(	ThreadVars *	tv,
		void *	data
	)

Definition at line 3605 of file detect-engine.c.

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

Referenced by DetectEngineThreadCtxInit(), UTHMatchPackets(), UTHMatchPacketsWithResults(), UTHPacketMatchSig(), and UTHPacketMatchSigMpm().

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DetectEngineThreadCtxGetJsonContext()

int DetectEngineThreadCtxGetJsonContext

(

DetectEngineThreadCtx *

det_ctx

)

Definition at line 5064 of file detect-engine.c.

References DetectEngineThreadCtx_::json_content, DetectEngineThreadCtx_::json_content_capacity, DetectEngineThreadCtx_::json_content_len, SCLogDebug, SCRealloc, SIG_JSON_CONTENT_ARRAY_LEN, and unlikely.

DetectEngineThreadCtxInit()

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 errors

alert counter setup

Definition at line 3369 of file detect-engine.c.

References DetectEngineThreadCtx_::de_ctx, DETECT_ENGINE_TYPE_NORMAL, DETECT_ENGINE_TYPE_TENANT, DetectEngineGetCurrent(), DetectEngineThreadCtxDeinit(), RunmodeIsUnittests(), SCCalloc, TM_ECODE_FAILED, tv, DetectEngineThreadCtx_::tv, DetectEngineCtx_::type, and unlikely.

Referenced by UTHMatchPackets(), UTHMatchPacketsWithResults(), UTHPacketMatchSig(), and UTHPacketMatchSigMpm().

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DetectEngineThreadCtxInitForReload()

DetectEngineThreadCtx* DetectEngineThreadCtxInitForReload	(	ThreadVars *	tv,
		DetectEngineCtx *	new_de_ctx,
		int	mt
	)

alert counter setup

Definition at line 3452 of file detect-engine.c.

References DetectEngineThreadCtx_::de_ctx, DETECT_ENGINE_TYPE_NORMAL, DETECT_ENGINE_TYPE_TENANT, DetectEngineReference(), SCCalloc, SCFree, DetectEngineCtx_::tenant_id, DetectEngineThreadCtx_::tenant_id, tv, DetectEngineThreadCtx_::tv, DetectEngineCtx_::type, and unlikely.

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DetectEngineUnsetParseMetadata()

void DetectEngineUnsetParseMetadata

(

void

)

Definition at line 4970 of file detect-engine.c.

DetectGetMultiData()

InspectionBuffer* DetectGetMultiData	(	struct DetectEngineThreadCtx_ *	det_ctx,
		const DetectEngineTransforms *	transforms,
		Flow *	f,
		const uint8_t	flow_flags,
		void *	txv,
		const int	list_id,
		uint32_t	index,
		InspectionMultiBufferGetDataPtr	GetBuf
	)

Definition at line 2135 of file detect-engine.c.

References DETECT_CI_FLAGS_SINGLE, InspectionBuffer::flags, InspectionBuffer::initialized, InspectionBufferMultipleForListGet(), InspectionBufferSetupMulti(), and InspectionBufferSetupMultiEmpty().

Referenced by DetectEngineInspectMultiBufferGeneric().

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DetectGetSingleData()

InspectionBuffer* DetectGetSingleData	(	struct DetectEngineThreadCtx_ *	det_ctx,
		const DetectEngineTransforms *	transforms,
		Flow *	f,
		const uint8_t	flow_flags,
		void *	txv,
		const int	list_id,
		InspectionSingleBufferGetDataPtr	GetBuf
	)

Definition at line 2118 of file detect-engine.c.

References InspectionBuffer::inspect, InspectionBufferGet(), and InspectionBufferSetupAndApplyTransforms().

Referenced by DetectEngineInspectBufferSingle().

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DetectMd5ValidateCallback()

bool DetectMd5ValidateCallback	(	const Signature *	s,
		const char **	sigerror,
		const DetectBufferType *	map
	)

Definition at line 5015 of file detect-engine.c.

References SignatureInitData_::buffer_index, SignatureInitData_::buffers, DetectContentData_::content, DetectContentData_::content_len, SigMatch_::ctx, DETECT_CONTENT, DETECT_CONTENT_NOCASE, DetectContentData_::flags, SignatureInitDataBuffer_::head, DetectBufferType_::id, SignatureInitDataBuffer_::id, Signature_::id, Signature_::init_data, DetectBufferType_::name, SigMatch_::next, SCLogError, SCLogWarning, and SigMatch_::type.

DetectPktInspectEngineRegister()

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

register inspect engine at start up time

Note

errors are fatal

Definition at line 155 of file detect-engine.c.

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

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DetectRegisterThreadCtxFuncs()

int DetectRegisterThreadCtxFuncs	(	DetectEngineCtx *	de_ctx,
		const char *	name,
		void *(*)(void *)	InitFunc,
		void *	data,
		void(*)(void *)	FreeFunc,
		int	mode
	)

Register Thread keyword context Funcs.

Parameters

de_ctx	detection engine to register in
name	keyword name for error printing
InitFunc	function ptr
data	keyword init data to pass to Func. Can be NULL.
FreeFunc	function ptr
mode	0 normal (ctx per keyword instance) 1 shared (one ctx per det_ct)

Return values

id	for retrieval of ctx at runtime
-1	on error

Note

make sure "data" remains valid and it free'd elsewhere. It's recommended to store it in the keywords global ctx so that it's freed when the de_ctx is freed.

Definition at line 3663 of file detect-engine.c.

References BUG_ON, de_ctx, HashListTableInit(), and DetectEngineCtx_::keyword_hash.

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DetectRegisterThreadCtxGlobalFuncs()

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 3753 of file detect-engine.c.

References BUG_ON, and id.

DetectSigmatchListEnumToString()

const char* DetectSigmatchListEnumToString

(

enum DetectSigmatchListEnum

type

)

Definition at line 4980 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, DETECT_SM_LIST_TMATCH, and type.

DetectTableToString()

const char* DetectTableToString

(

enum DetectTable

table

)

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

References DETECT_TABLE_APP_FILTER, DETECT_TABLE_APP_TD, DETECT_TABLE_NOT_SET, DETECT_TABLE_PACKET_FILTER, DETECT_TABLE_PACKET_PRE_FLOW, DETECT_TABLE_PACKET_PRE_STREAM, and DETECT_TABLE_PACKET_TD.

DetectThreadCtxGetGlobalKeywordThreadCtx()

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 3797 of file detect-engine.c.

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

Referenced by HttpHeaderGetBufferSpace().

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DetectThreadCtxGetKeywordThreadCtx()

void* DetectThreadCtxGetKeywordThreadCtx	(	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 3733 of file detect-engine.c.

References id, DetectEngineThreadCtx_::keyword_ctxs_array, and DetectEngineThreadCtx_::keyword_ctxs_size.

Referenced by DetectLuaMatchBuffer(), and DetectPcrePayloadMatch().

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DetectUnregisterThreadCtxFuncs()

int DetectUnregisterThreadCtxFuncs	(	DetectEngineCtx *	de_ctx,
		void *	data,
		const char *	name
	)

Remove Thread keyword context registration.

Parameters

de_ctx	detection engine to deregister from
det_ctx	detection engine thread context to deregister from
data	keyword init data to pass to Func. Can be NULL.
name	keyword name for error printing

Return values

1	Item unregistered
0	otherwise

Note

make sure "data" remains valid and it free'd elsewhere. It's recommended to store it in the keywords global ctx so that it's freed when the de_ctx is freed.

Definition at line 3715 of file detect-engine.c.

References DetectEngineThreadKeywordCtxItem_::data, de_ctx, HashListTableRemove(), DetectEngineCtx_::keyword_hash, and name.

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InjectPacketsForFlush()

void InjectPacketsForFlush	(	ThreadVars **	detect_tvs,
		int	no_of_detect_tvs
	)

Definition at line 2249 of file detect-engine.c.

References PacketQueue_::cond_q, Packet_::flags, PacketQueue_::mutex_q, name, PacketEnqueue(), PacketGetFromAlloc(), PKT_PSEUDO_LOG_FLUSH, PKT_PSEUDO_STREAM_END, PKT_SET_SRC, PKT_SRC_DETECT_RELOAD_FLUSH, SCCondSignal, SCLogDebug, SCMutexLock, SCMutexUnlock, and ThreadVars_::stream_pq.

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SCDetectEngineRegisterRateFilterCallback()

void SCDetectEngineRegisterRateFilterCallback	(	SCDetectRateFilterFunc	cb,
		void *	arg
	)

Register a callback when a rate_filter has been applied to an alert.

This callback is added to the current detection engine and will be copied to all future detection engines over rule reloads.

Definition at line 5056 of file detect-engine.c.

References de_ctx, DetectEngineDeReference(), DetectEngineGetCurrent(), DetectEngineCtx_::rate_filter_callback_arg, and DetectEngineCtx_::RateFilterCallback.

Referenced by main().

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Variable Documentation

signature_properties

const struct SignatureProperties signature_properties[SIG_TYPE_MAX]

Initial value:

= {
          { SIG_PROP_FLOW_ACTION_PACKET, },
           { SIG_PROP_FLOW_ACTION_FLOW, },
      { SIG_PROP_FLOW_ACTION_FLOW, },
           { SIG_PROP_FLOW_ACTION_FLOW, },
           { SIG_PROP_FLOW_ACTION_PACKET, },
              { SIG_PROP_FLOW_ACTION_PACKET, },
       { SIG_PROP_FLOW_ACTION_FLOW_IF_STATEFUL, },
           { SIG_PROP_FLOW_ACTION_FLOW_IF_STATEFUL, },
         { SIG_PROP_FLOW_ACTION_FLOW, },
           { SIG_PROP_FLOW_ACTION_FLOW, },
}

Definition at line 111 of file detect-engine.c.

Referenced by EngineAnalysisRules2().