detect-parse.c File Reference

#include "suricata-common.h"
#include "detect.h"
#include "detect-engine.h"
#include "detect-engine-address.h"
#include "detect-engine-port.h"
#include "detect-engine-mpm.h"
#include "detect-engine-state.h"
#include "detect-engine-build.h"
#include "detect-content.h"
#include "detect-bsize.h"
#include "detect-isdataat.h"
#include "detect-pcre.h"
#include "detect-uricontent.h"
#include "detect-reference.h"
#include "detect-ipproto.h"
#include "detect-flow.h"
#include "detect-app-layer-protocol.h"
#include "detect-lua.h"
#include "detect-app-layer-event.h"
#include "detect-http-method.h"
#include "pkt-var.h"
#include "host.h"
#include "util-profiling.h"
#include "decode.h"
#include "flow.h"
#include "util-rule-vars.h"
#include "conf.h"
#include "conf-yaml-loader.h"
#include "app-layer.h"
#include "app-layer-protos.h"
#include "app-layer-parser.h"
#include "app-layer-htp.h"
#include "util-classification-config.h"
#include "util-unittest.h"
#include "util-unittest-helper.h"
#include "util-debug.h"
#include "string.h"
#include "detect-parse.h"
#include "detect-engine-iponly.h"
#include "detect-engine-file.h"
#include "app-layer-detect-proto.h"
#include "action-globals.h"
#include "util-validate.h"
#include "detect-engine-alert.h"
#include "packet.h"
#include "tests/detect-parse.c"

Include dependency graph for detect-parse.c:

Go to the source code of this file.

Data Structures
struct	DetectFileHandlerProtocol_t
struct	SigDuplWrapper_
	Registration table for file handlers. More...
struct	SignatureParser_

Macros
#define	ALPROTO_WITHFILES_MAX   16
#define	CASE_CODE_STRING(E, S)   case E: return S; break
#define	CASE_CODE(E)   case E: return #E
#define	URL   "https://suricata.io/our-story/deprecation-policy/"

Typedefs
typedef struct SigDuplWrapper_	SigDuplWrapper
	Registration table for file handlers. More...
typedef struct SignatureParser_	SignatureParser

Functions
void	DetectFileRegisterProto (AppProto alproto, int direction, int to_client_progress, int to_server_progress)
void	DetectFileRegisterFileProtocols (DetectFileHandlerTableElmt *reg)
const char *	DetectListToHumanString (int list)
const char *	DetectListToString (int list)
int	DetectEngineContentModifierBufferSetup (DetectEngineCtx *de_ctx, Signature *s, const char *arg, int sm_type, int sm_list, AppProto alproto)
SigMatch *	SigMatchAlloc (void)
void	SigMatchFree (DetectEngineCtx *de_ctx, SigMatch *sm)
	free a SigMatch More...
bool	SigMatchSilentErrorEnabled (const DetectEngineCtx *de_ctx, const enum DetectKeywordId id)
bool	SigMatchStrictEnabled (const enum DetectKeywordId id)
void	SigTableApplyStrictCommandLineOption (const char *str)
SigMatch *	SigMatchAppendSMToList (DetectEngineCtx *de_ctx, Signature *s, uint16_t type, SigMatchCtx *ctx, const int list)
	Append a SigMatch to the list type. More...
void	SigMatchRemoveSMFromList (Signature *s, SigMatch *sm, int sm_list)
SigMatch *	DetectGetLastSMFromMpmLists (const DetectEngineCtx *de_ctx, const Signature *s)
	get the last SigMatch from lists that support MPM. More...
SigMatch *	DetectGetLastSMFromLists (const Signature *s,...)
	Returns the sm with the largest index (added latest) from the lists passed to us. More...
SigMatch *	DetectGetLastSMByListPtr (const Signature *s, SigMatch *sm_list,...)
	Returns the sm with the largest index (added last) from the list passed to us as a pointer. More...
SigMatch *	DetectGetLastSMByListId (const Signature *s, int list_id,...)
	Returns the sm with the largest index (added last) from the list passed to us as an id. More...
SigMatch *	DetectGetLastSM (const Signature *s)
	Returns the sm with the largest index (added latest) from this sig. More...
int	SigMatchListSMBelongsTo (const Signature *s, const SigMatch *key_sm)
void	DetectRegisterAppLayerHookLists (void)
	register app hooks as generic lists More...
int	SignatureInitDataBufferCheckExpand (Signature *s)
	check if buffers array still has space left, expand if not More...
Signature *	SigAlloc (void)
void	SigFree (DetectEngineCtx *de_ctx, Signature *s)
int	DetectSignatureAddTransform (Signature *s, int transform, void *options)
int	DetectSignatureSetMultiAppProto (Signature *s, const AppProto *alprotos)
	this function is used to set multiple possible app-layer protos More...
int	DetectSignatureSetAppProto (Signature *s, AppProto alproto)
SigMatchData *	SigMatchList2DataArray (SigMatch *head)
	convert SigMatch list to SigMatchData array More...
Signature *	SigInit (DetectEngineCtx *de_ctx, const char *sigstr)
	Parses a signature and adds it to the Detection Engine Context. More...
int	DetectParseDupSigHashInit (DetectEngineCtx *de_ctx)
	Initializes the hash table that is used to cull duplicate sigs. More...
void	DetectParseDupSigHashFree (DetectEngineCtx *de_ctx)
	Frees the hash table that is used to cull duplicate sigs. More...
Signature *	DetectFirewallRuleAppendNew (DetectEngineCtx *de_ctx, const char *sigstr)
	Parse and append a Signature into the Detection Engine Context signature list. More...
Signature *	DetectEngineAppendSig (DetectEngineCtx *de_ctx, const char *sigstr)
	Parse and append a Signature into the Detection Engine Context signature list. More...
int	DetectParsePcreExec (DetectParseRegex *parse_regex, pcre2_match_data **match, const char *str, int start_offset, int options)
void	DetectParseFreeRegex (DetectParseRegex *r)
void	DetectParseFreeRegexes (void)
void	DetectParseRegexAddToFreeList (DetectParseRegex *detect_parse)
	add regex and/or study to at exit free list More...
bool	DetectSetupParseRegexesOpts (const char *parse_str, DetectParseRegex *detect_parse, int opts)
DetectParseRegex *	DetectSetupPCRE2 (const char *parse_str, int opts)
int	SC_Pcre2SubstringCopy (pcre2_match_data *match_data, uint32_t number, PCRE2_UCHAR *buffer, PCRE2_SIZE *bufflen)
int	SC_Pcre2SubstringGet (pcre2_match_data *match_data, uint32_t number, PCRE2_UCHAR **bufferptr, PCRE2_SIZE *bufflen)
void	DetectSetupParseRegexes (const char *parse_str, DetectParseRegex *detect_parse)
int	DetectSetupDirection (Signature *s, const char *str)
	Parse and setup a direction. More...
void	DetectParseRegisterTests (void)
	this function registers unit tests for DetectParse More...
void	SigParseRegisterTests (void)

Variables
DetectFileHandlerTableElmt	filehandler_table [DETECT_TBLSIZE_STATIC]
DetectFileHandlerProtocol_t	al_protocols [ALPROTO_WITHFILES_MAX]
SigTableElmt *	sigmatch_table = NULL
bool	sc_set_caps
int	g_skip_prefilter

Detailed Description

Author

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

signature parser

Definition in file detect-parse.c.

Macro Definition Documentation

ALPROTO_WITHFILES_MAX

#define ALPROTO_WITHFILES_MAX   16

Definition at line 90 of file detect-parse.c.

CASE_CODE

#define CASE_CODE

(

E

)

case E: return #E

Definition at line 206 of file detect-parse.c.

CASE_CODE_STRING

#define CASE_CODE_STRING	(		E,
			S
	)		case E: return S; break

URL

#define URL   "https://suricata.io/our-story/deprecation-policy/"

Typedef Documentation

SigDuplWrapper

typedef struct SigDuplWrapper_ SigDuplWrapper

Registration table for file handlers.

We use this as data to the hash table DetectEngineCtx->dup_sig_hash_table.

SignatureParser

typedef struct SignatureParser_ SignatureParser

helper structure for sig parsing

Function Documentation

DetectEngineAppendSig()

Signature* DetectEngineAppendSig	(	DetectEngineCtx *	de_ctx,
		const char *	sigstr
	)

Parse and append a Signature into the Detection Engine Context signature list.

If the signature is bidirectional it should append two signatures (with the addresses switched) into the list. Also handle duplicate signatures. In case of duplicate sigs, use the ones that have the latest revision. We use the sid and the msg to identify duplicate sigs. If 2 sigs have the same sid and gid, they are duplicates.

Parameters

de_ctx	Pointer to the Detection Engine Context.
sigstr	Pointer to a character string containing the signature to be parsed.
sig_file	Pointer to a character string containing the filename from which signature is read
lineno	Line number from where signature is read

Return values

Pointer

to the head Signature in the detection engine ctx sig_list on success; NULL on failure.

In DetectEngineAppendSig(), the signatures are prepended and we always return the first one so if the signature is bidirectional, the returned sig will point through "next" ptr to the cloned signatures with the switched addresses

Definition at line 3344 of file detect-parse.c.

References de_ctx, and SigInit().

Referenced by UTHAppendSigs(), and UTHParseSignature().

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DetectEngineContentModifierBufferSetup()

int DetectEngineContentModifierBufferSetup	(	DetectEngineCtx *	de_ctx,
		Signature *	s,
		const char *	arg,
		int	sm_type,
		int	sm_list,
		AppProto	alproto
	)

Parameters

arg	NULL or empty string

Definition at line 222 of file detect-parse.c.

References Signature_::alproto, ALPROTO_UNKNOWN, DETECT_SM_LIST_NOTSET, Signature_::init_data, SignatureInitData_::list, name, SCLogError, and sigmatch_table.

Referenced by DetectHttpUriSetup().

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DetectFileRegisterFileProtocols()

void DetectFileRegisterFileProtocols

(

DetectFileHandlerTableElmt *

reg

)

Definition at line 127 of file detect-parse.c.

References al_protocols, DetectFileHandlerProtocol_t::alproto, ALPROTO_UNKNOWN, DetectFileHandlerTableElmt_::Callback, DetectAppLayerInspectEngineRegister(), DetectAppLayerMpmRegister(), DetectFileHandlerProtocol_t::direction, g_alproto_max, DetectFileHandlerTableElmt_::GetData, DetectFileHandlerTableElmt_::name, DetectFileHandlerTableElmt_::PrefilterFn, DetectFileHandlerTableElmt_::priority, SIG_FLAG_TOCLIENT, SIG_FLAG_TOSERVER, DetectFileHandlerProtocol_t::to_client_progress, and DetectFileHandlerProtocol_t::to_server_progress.

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DetectFileRegisterProto()

void DetectFileRegisterProto	(	AppProto	alproto,
		int	direction,
		int	to_client_progress,
		int	to_server_progress
	)

Definition at line 108 of file detect-parse.c.

References al_protocols, DetectFileHandlerProtocol_t::alproto, ALPROTO_UNKNOWN, ALPROTO_WITHFILES_MAX, DetectFileHandlerProtocol_t::direction, DetectFileHandlerProtocol_t::to_client_progress, and DetectFileHandlerProtocol_t::to_server_progress.

DetectFirewallRuleAppendNew()

Signature* DetectFirewallRuleAppendNew	(	DetectEngineCtx *	de_ctx,
		const char *	sigstr
	)

Parse and append a Signature into the Detection Engine Context signature list.

If the signature is bidirectional it should append two signatures (with the addresses switched) into the list. Also handle duplicate signatures. In case of duplicate sigs, use the ones that have the latest revision. We use the sid and the msg to identify duplicate sigs. If 2 sigs have the same sid and gid, they are duplicates.

Parameters

de_ctx	Pointer to the Detection Engine Context.
sigstr	Pointer to a character string containing the signature to be parsed.
sig_file	Pointer to a character string containing the filename from which signature is read
lineno	Line number from where signature is read

Return values

Pointer

to the head Signature in the detection engine ctx sig_list on success; NULL on failure.

In DetectEngineAppendSig(), the signatures are prepended and we always return the first one so if the signature is bidirectional, the returned sig will point through "next" ptr to the cloned signatures with the switched addresses

Definition at line 3272 of file detect-parse.c.

DetectGetLastSM()

SigMatch* DetectGetLastSM

(

const Signature *

s

)

Returns the sm with the largest index (added latest) from this sig.

Return values

sm_last

Pointer to last sm

Definition at line 779 of file detect-parse.c.

References SignatureInitData_::buffer_index, SignatureInitData_::buffers, DETECT_SM_LIST_MAX, SigMatch_::idx, Signature_::init_data, SignatureInitData_::smlists_tail, and SignatureInitDataBuffer_::tail.

DetectGetLastSMByListId()

SigMatch* DetectGetLastSMByListId	(	const Signature *	s,
		int	list_id,
			...
	)

Returns the sm with the largest index (added last) from the list passed to us as an id.

Parameters

list_id	id of the list to be searched
va_args	list of keyword types terminated by -1

Return values

sm_last

to last sm.

Definition at line 728 of file detect-parse.c.

References SignatureInitData_::buffer_index, SignatureInitData_::buffers, DETECT_SM_LIST_MAX, Signature_::init_data, and SignatureInitDataBuffer_::tail.

DetectGetLastSMByListPtr()

SigMatch* DetectGetLastSMByListPtr	(	const Signature *	s,
		SigMatch *	sm_list,
			...
	)

Returns the sm with the largest index (added last) from the list passed to us as a pointer.

Parameters

sm_list	pointer to the SigMatch we should look before
va_args	list of keyword types terminated by -1

Return values

sm_last

to last sm.

Definition at line 696 of file detect-parse.c.

Referenced by DetectGetLastSMFromMpmLists().

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DetectGetLastSMFromLists()

SigMatch* DetectGetLastSMFromLists	(	const Signature *	s,
			...
	)

Returns the sm with the largest index (added latest) from the lists passed to us.

Return values

Pointer

to Last sm.

Definition at line 634 of file detect-parse.c.

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

DetectGetLastSMFromMpmLists()

SigMatch* DetectGetLastSMFromMpmLists	(	const DetectEngineCtx *	de_ctx,
		const Signature *	s
	)

get the last SigMatch from lists that support MPM.

Note

only supports the lists that are registered through DetectBufferTypeSupportsMpm().

Definition at line 597 of file detect-parse.c.

References SignatureInitData_::buffer_index, SignatureInitData_::buffers, de_ctx, DETECT_CONTENT, DETECT_SM_LIST_MAX, DetectEngineBufferTypeSupportsMpmGetById(), DetectGetLastSMByListPtr(), SignatureInitDataBuffer_::id, SigMatch_::idx, Signature_::init_data, SignatureInitData_::smlists_tail, and SignatureInitDataBuffer_::tail.

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DetectListToHumanString()

const char* DetectListToHumanString

(

int

list

)

Definition at line 188 of file detect-parse.c.

Referenced by DumpPatterns().

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DetectListToString()

const char* DetectListToString

(

int

list

)

Definition at line 206 of file detect-parse.c.

DetectParseDupSigHashFree()

void DetectParseDupSigHashFree

(

DetectEngineCtx *

de_ctx

)

Frees the hash table that is used to cull duplicate sigs.

Parameters

de_ctx

Pointer to the detection engine context that holds this table.

Definition at line 3094 of file detect-parse.c.

References de_ctx, DetectEngineCtx_::dup_sig_hash_table, and HashListTableFree().

Referenced by DetectEngineCtxFree().

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DetectParseDupSigHashInit()

int DetectParseDupSigHashInit

(

DetectEngineCtx *

de_ctx

)

Initializes the hash table that is used to cull duplicate sigs.

Parameters

de_ctx

Pointer to the detection engine context.

Return values

0	On success.
-1	On failure.

Definition at line 3077 of file detect-parse.c.

References de_ctx, DetectEngineCtx_::dup_sig_hash_table, and HashListTableInit().

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DetectParseFreeRegex()

void DetectParseFreeRegex

(

DetectParseRegex *

r

)

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

References DetectParseRegex::context, and DetectParseRegex::regex.

DetectParseFreeRegexes()

void DetectParseFreeRegexes

(

void

)

Definition at line 3418 of file detect-parse.c.

Referenced by GlobalsDestroy().

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DetectParsePcreExec()

int DetectParsePcreExec	(	DetectParseRegex *	parse_regex,
		pcre2_match_data **	match,
		const char *	str,
		int	start_offset,
		int	options
	)

Definition at line 3398 of file detect-parse.c.

DetectParseRegexAddToFreeList()

void DetectParseRegexAddToFreeList

(

DetectParseRegex *

detect_parse

)

add regex and/or study to at exit free list

Definition at line 3434 of file detect-parse.c.

References FatalError, DetectParseRegex::next, DetectParseRegex::regex, and SCCalloc.

Referenced by DetectSetupParseRegexesOpts().

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DetectParseRegisterTests()

void DetectParseRegisterTests

(

void

)

this function registers unit tests for DetectParse

Definition at line 146 of file detect-parse.c.

References UtRegisterTest().

Referenced by SigParseRegisterTests().

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DetectRegisterAppLayerHookLists()

void DetectRegisterAppLayerHookLists

(

void

)

register app hooks as generic lists

Register each hook in each app protocol as: <alproto>:<hook name>:generic These lists can be used by lua scripts to hook into.

Todo:

move elsewhere? maybe a detect-engine-hook.c?

Definition at line 1133 of file detect-parse.c.

References ALPROTO_FAILED, AppLayerParserGetStateNameById(), AppLayerParserGetStateProgressCompletionStatus(), AppProtoToString(), DetectAppLayerInspectEngineRegister(), DetectEngineInspectGenericList(), g_alproto_max, name, SCLogDebug, SIG_FLAG_TOCLIENT, and SIG_FLAG_TOSERVER.

Referenced by SigTableSetup().

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DetectSetupDirection()

int DetectSetupDirection	(	Signature *	s,
		const char *	str
	)

Parse and setup a direction.

Parameters

s	siganture
str	argument to the keyword

Return values

0	on success, -1 on failure

Definition at line 3539 of file detect-parse.c.

References Signature_::flags, Signature_::init_data, SignatureInitData_::init_flags, SCLogError, SIG_FLAG_INIT_FORCE_TOCLIENT, SIG_FLAG_INIT_FORCE_TOSERVER, SIG_FLAG_TOCLIENT, SIG_FLAG_TOSERVER, SIG_FLAG_TXBOTHDIR, and str.

DetectSetupParseRegexes()

void DetectSetupParseRegexes	(	const char *	parse_str,
		DetectParseRegex *	detect_parse
	)

Definition at line 3524 of file detect-parse.c.

References DetectSetupParseRegexesOpts(), and FatalError.

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DetectSetupParseRegexesOpts()

bool DetectSetupParseRegexesOpts	(	const char *	parse_str,
		DetectParseRegex *	detect_parse,
		int	opts
	)

Definition at line 3445 of file detect-parse.c.

References DetectParseRegex::context, DetectParseRegexAddToFreeList(), DetectParseRegex::regex, SC_MATCH_LIMIT_DEFAULT, SC_MATCH_LIMIT_RECURSION_DEFAULT, and SCLogError.

Referenced by DetectSetupParseRegexes().

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DetectSetupPCRE2()

DetectParseRegex* DetectSetupPCRE2	(	const char *	parse_str,
		int	opts
	)

Definition at line 3474 of file detect-parse.c.

References DetectParseRegex::next, DetectParseRegex::regex, SCCalloc, SCFree, and SCLogError.

DetectSignatureAddTransform()

int DetectSignatureAddTransform	(	Signature *	s,
		int	transform,
		void *	options
	)

Definition at line 2105 of file detect-parse.c.

References DetectEngineTransforms::cnt, DETECT_TRANSFORMS_MAX, Signature_::init_data, SignatureInitData_::list, SignatureInitData_::list_set, TransformData_::options, SCLogDebug, SCLogError, SCReturnInt, Signature_::sig_str, TransformData_::transform, DetectEngineTransforms::transforms, and SignatureInitData_::transforms.

DetectSignatureSetAppProto()

int DetectSignatureSetAppProto	(	Signature *	s,
		AppProto	alproto
	)

Definition at line 2218 of file detect-parse.c.

Referenced by DetectSignatureSetMultiAppProto().

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DetectSignatureSetMultiAppProto()

int DetectSignatureSetMultiAppProto	(	Signature *	s,
		const AppProto *	alprotos
	)

this function is used to set multiple possible app-layer protos

into the current signature (for example ja4 for both tls and quic)

Parameters

s	pointer to the Current Signature
alprotos	an array terminated by ALPROTO_UNKNOWN

Return values

0	on Success
-1	on Failure

Definition at line 2140 of file detect-parse.c.

References Signature_::alproto, ALPROTO_UNKNOWN, SignatureInitData_::alprotos, DetectSignatureSetAppProto(), Signature_::init_data, and SIG_ALPROTO_MAX.

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SC_Pcre2SubstringCopy()

int SC_Pcre2SubstringCopy	(	pcre2_match_data *	match_data,
		uint32_t	number,
		PCRE2_UCHAR *	buffer,
		PCRE2_SIZE *	bufflen
	)

Definition at line 3500 of file detect-parse.c.

SC_Pcre2SubstringGet()

int SC_Pcre2SubstringGet	(	pcre2_match_data *	match_data,
		uint32_t	number,
		PCRE2_UCHAR **	bufferptr,
		PCRE2_SIZE *	bufflen
	)

Definition at line 3512 of file detect-parse.c.

SigAlloc()

Signature* SigAlloc

(

void

)

Definition at line 1901 of file detect-parse.c.

References SignatureInitData_::buffers, SignatureInitData_::buffers_size, DETECT_SM_LIST_NOTSET, Signature_::init_data, SignatureInitData_::is_rule_state_dependant, SignatureInitData_::list, SignatureInitData_::mpm_sm_list, Signature_::prio, SignatureInitData_::rule_state_dependant_sids_idx, SCCalloc, SCFree, and unlikely.

SigFree()

void SigFree	(	DetectEngineCtx *	de_ctx,
		Signature *	s
	)

Definition at line 2021 of file detect-parse.c.

References SignatureInitData_::buffer_index, SignatureInitData_::buffers, SignatureInitData_::cidr_dst, SignatureInitData_::cidr_src, DetectEngineTransforms::cnt, de_ctx, DETECT_SM_LIST_MAX, SigTableElmt_::Free, SignatureInitDataBuffer_::head, Signature_::init_data, IPOnlyCIDRListFree(), SigMatch_::next, TransformData_::options, SCFree, sigmatch_table, SigMatchFree(), SignatureInitData_::smlists, TransformData_::transform, DetectEngineTransforms::transforms, and SignatureInitData_::transforms.

Referenced by LLVMFuzzerTestOneInput(), and SigCleanSignatures().

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SigInit()

Signature* SigInit	(	DetectEngineCtx *	de_ctx,
		const char *	sigstr
	)

Parses a signature and adds it to the Detection Engine Context.

Parameters

de_ctx	Pointer to the Detection Engine Context.
sigstr	Pointer to a character string containing the signature to be parsed.

Return values

Pointer

to the Signature instance on success; NULL on failure.

Definition at line 3002 of file detect-parse.c.

Referenced by DetectEngineAppendSig(), LLVMFuzzerTestOneInput(), UTHPacketMatchSig(), and UTHPacketMatchSigMpm().

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SigMatchAlloc()

SigMatch* SigMatchAlloc

(

void

)

Definition at line 350 of file detect-parse.c.

References SigMatch_::next, SigMatch_::prev, SCCalloc, and unlikely.

SigMatchAppendSMToList()

SigMatch* SigMatchAppendSMToList	(	DetectEngineCtx *	de_ctx,
		Signature *	s,
		uint16_t	type,
		SigMatchCtx *	ctx,
		const int	list
	)

Append a SigMatch to the list type.

Parameters

s	Signature.
new	The sig match to append.
list	The list to append to.

Definition at line 464 of file detect-parse.c.

Referenced by DetectContentSetup(), and DetectFlowvarPostMatchSetup().

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SigMatchFree()

void SigMatchFree	(	DetectEngineCtx *	de_ctx,
		SigMatch *	sm
	)

free a SigMatch

Parameters

sm	SigMatch to free.

free the ctx, for that we call the Free func

Definition at line 364 of file detect-parse.c.

References SigMatch_::ctx, de_ctx, SigTableElmt_::Free, SCFree, sigmatch_table, and SigMatch_::type.

Referenced by DetectIPProtoRemoveAllSMs(), and SigFree().

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SigMatchList2DataArray()

SigMatchData* SigMatchList2DataArray

(

SigMatch *

head

)

convert SigMatch list to SigMatchData array

Note

ownership of sm->ctx is transferred to smd->ctx

Definition at line 2354 of file detect-parse.c.

References len.

Referenced by DetectEngineAppInspectionEngine2Signature().

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SigMatchListSMBelongsTo()

int SigMatchListSMBelongsTo	(	const Signature *	s,
		const SigMatch *	key_sm
	)

Definition at line 833 of file detect-parse.c.

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

SigMatchRemoveSMFromList()

void SigMatchRemoveSMFromList	(	Signature *	s,
		SigMatch *	sm,
		int	sm_list
	)

Definition at line 557 of file detect-parse.c.

References Signature_::init_data, SigMatch_::next, SigMatch_::prev, SignatureInitData_::smlists, and SignatureInitData_::smlists_tail.

Referenced by DetectIPProtoRemoveAllSMs().

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SigMatchSilentErrorEnabled()

bool SigMatchSilentErrorEnabled	(	const DetectEngineCtx *	de_ctx,
		const enum DetectKeywordId	id
	)

Definition at line 406 of file detect-parse.c.

References de_ctx, id, and DetectEngineCtx_::sm_types_silent_error.

SigMatchStrictEnabled()

bool SigMatchStrictEnabled

(

const enum DetectKeywordId

id

)

Definition at line 412 of file detect-parse.c.

References DETECT_TBLSIZE, flags, SIGMATCH_STRICT_PARSING, and sigmatch_table.

SignatureInitDataBufferCheckExpand()

int SignatureInitDataBufferCheckExpand

(

Signature *

s

)

check if buffers array still has space left, expand if not

Definition at line 1881 of file detect-parse.c.

References SignatureInitData_::buffer_index, SignatureInitData_::buffers, SignatureInitData_::buffers_size, Signature_::init_data, and SCRealloc.

Referenced by DetectBufferGetActiveList().

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SigParseRegisterTests()

void SigParseRegisterTests

(

void

)

Definition at line 5313 of file detect-parse.c.

References DetectParseRegisterTests(), and UtRegisterTest().

Referenced by SigRegisterTests().

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SigTableApplyStrictCommandLineOption()

void SigTableApplyStrictCommandLineOption

(

const char *

str

)

Definition at line 420 of file detect-parse.c.

References DETECT_TBLSIZE, FatalError, SigTableElmt_::flags, SCStrdup, SIGMATCH_STRICT_PARSING, sigmatch_table, and str.

Variable Documentation

al_protocols

DetectFileHandlerProtocol_t al_protocols[ALPROTO_WITHFILES_MAX]

Initial value:

= {
    { .alproto = ALPROTO_NFS, .direction = SIG_FLAG_TOSERVER | SIG_FLAG_TOCLIENT },
    { .alproto = ALPROTO_SMB, .direction = SIG_FLAG_TOSERVER | SIG_FLAG_TOCLIENT },
    { .alproto = ALPROTO_FTP, .direction = SIG_FLAG_TOSERVER | SIG_FLAG_TOCLIENT },
    { .alproto = ALPROTO_FTPDATA, .direction = SIG_FLAG_TOSERVER | SIG_FLAG_TOCLIENT },
    { .alproto = ALPROTO_HTTP1,
            .direction = SIG_FLAG_TOSERVER | SIG_FLAG_TOCLIENT,
            .to_client_progress = HTP_RESPONSE_PROGRESS_BODY,
            .to_server_progress = HTP_REQUEST_PROGRESS_BODY },
    { .alproto = ALPROTO_HTTP2,
            .direction = SIG_FLAG_TOSERVER | SIG_FLAG_TOCLIENT,
            .to_client_progress = HTTP2StateDataServer,
            .to_server_progress = HTTP2StateDataClient },
    { .alproto = ALPROTO_SMTP, .direction = SIG_FLAG_TOSERVER }, { .alproto = ALPROTO_UNKNOWN }
}

Definition at line 92 of file detect-parse.c.

Referenced by DetectFileRegisterFileProtocols(), and DetectFileRegisterProto().

filehandler_table

DetectFileHandlerTableElmt filehandler_table[DETECT_TBLSIZE_STATIC]

Definition at line 87 of file detect-parse.c.

g_skip_prefilter

int g_skip_prefilter

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

sc_set_caps

bool sc_set_caps

set caps or not

Definition at line 188 of file suricata.c.

sigmatch_table

SigTableElmt* sigmatch_table = NULL

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

Referenced by DetectAckRegister(), DetectAppLayerEventRegister(), DetectAppLayerMpmRegisterByParentId(), DetectAppLayerProtocolRegister(), DetectAppLayerStateRegister(), DetectAsn1Register(), DetectBase64DataRegister(), DetectBase64DecodeRegister(), DetectBsizeRegister(), DetectBypassRegister(), DetectByteExtractRegister(), DetectBytejumpRegister(), DetectBytemathRegister(), DetectBytetestRegister(), DetectClasstypeRegister(), DetectConfigRegister(), DetectContentRegister(), DetectCsumRegister(), DetectDatarepRegister(), DetectDatasetRegister(), DetectDceIfaceRegister(), DetectDceOpnumRegister(), DetectDceStubDataRegister(), DetectDepthRegister(), DetectDetectionFilterRegister(), DetectDistanceRegister(), DetectDnsOpcodeRegister(), DetectDnsQueryRegister(), DetectDnsRcodeRegister(), DetectDnsResponseRegister(), DetectDnsRrtypeRegister(), DetectDsizeRegister(), DetectEngineAppInspectionEngineSignatureFree(), DetectEngineBufferTypeValidateTransform(), DetectEngineContentModifierBufferSetup(), DetectEngineEventRegister(), DetectEngineInspectGenericList(), DetectEntropyRegister(), DetectFastPatternRegister(), DetectFiledataRegister(), DetectFilemagicRegister(), DetectFileMd5Register(), DetectFilenameRegister(), DetectFileSha1Register(), DetectFileSha256Register(), DetectFilesizeRegister(), DetectFilestoreRegister(), DetectFlagsRegister(), DetectFlowAgeRegister(), DetectFlowbitsRegister(), DetectFlowBytesRegister(), DetectFlowBytesToClientRegister(), DetectFlowBytesToServerRegister(), DetectFlowintRegister(), DetectFlowPktsRegister(), DetectFlowPktsToClientRegister(), DetectFlowPktsToServerRegister(), DetectFlowRegister(), DetectFlowvarRegister(), DetectFragBitsRegister(), DetectFragOffsetRegister(), DetectFrameRegister(), DetectFtpbounceRegister(), DetectFtpCommandDataRegister(), DetectFtpCommandRegister(), DetectFtpdataRegister(), DetectFtpReplyRegister(), DetectGeoipRegister(), DetectGidRegister(), DetectHelperKeywordRegister(), DetectHelperTransformRegister(), DetectHostbitsRegister(), DetectHttp2Register(), DetectHttpClientBodyRegister(), DetectHttpCookieRegister(), DetectHttpHeaderNamesRegister(), DetectHttpHeaderRegister(), DetectHttpHHRegister(), DetectHttpMethodRegister(), DetectHttpProtocolRegister(), DetectHttpRawHeaderRegister(), DetectHttpRequestHeaderRegister(), DetectHttpRequestLineRegister(), DetectHttpResponseHeaderRegister(), DetectHttpResponseLineRegister(), DetectHttpServerBodyRegister(), DetectHttpStartRegister(), DetectHttpStatCodeRegister(), DetectHttpStatMsgRegister(), DetectHttpUARegister(), DetectHttpUriRegister(), DetectIcmpIdRegister(), DetectIcmpSeqRegister(), DetectIcmpv4HdrRegister(), DetectICMPv6hdrRegister(), DetectICMPv6mtuRegister(), DetectICodeRegister(), DetectIdRegister(), DetectIkeChosenSaRegister(), DetectIkeExchTypeRegister(), DetectIkeKeyExchangePayloadLengthRegister(), DetectIkeKeyExchangeRegister(), DetectIkeNoncePayloadLengthRegister(), DetectIkeNonceRegister(), DetectIkeSpiRegister(), DetectIkeVendorRegister(), DetectIPAddrBufferRegister(), DetectIpOptsRegister(), DetectIPProtoRegister(), DetectIPRepRegister(), DetectIpv4hdrRegister(), DetectIpv6hdrRegister(), DetectIsdataatRegister(), DetectITypeRegister(), DetectJa4HashRegister(), DetectKrb5CNameRegister(), DetectKrb5ErrCodeRegister(), DetectKrb5MsgTypeRegister(), DetectKrb5SNameRegister(), DetectKrb5TicketEncryptionRegister(), DetectL3ProtoRegister(), DetectLuaRegister(), DetectMarkRegister(), DetectMetadataRegister(), DetectModbusRegister(), DetectMsgRegister(), DetectNfsProcedureRegister(), DetectNfsVersionRegister(), DetectNoalertRegister(), DetectNocaseRegister(), DetectOffsetRegister(), DetectPcreRegister(), DetectPktDataRegister(), DetectPktvarRegister(), DetectPrefilterRegister(), DetectPriorityRegister(), DetectQuicCyuHashRegister(), DetectQuicCyuStringRegister(), DetectQuicSniRegister(), DetectQuicUaRegister(), DetectQuicVersionRegister(), DetectRawbytesRegister(), DetectReferenceRegister(), DetectReplaceRegister(), DetectRequiresRegister(), DetectRevRegister(), DetectRpcRegister(), DetectSameipRegister(), DetectSeqRegister(), DetectSidRegister(), DetectSipMethodRegister(), DetectSipUriRegister(), DetectSmbNamedPipeRegister(), DetectSmbNtlmsspDomainRegister(), DetectSmbNtlmsspUserRegister(), DetectSmbShareRegister(), DetectSmbVersionRegister(), DetectSshHasshRegister(), DetectSshHasshServerRegister(), DetectSshHasshServerStringRegister(), DetectSshHasshStringRegister(), DetectSshProtocolRegister(), DetectSshSoftwareRegister(), DetectSshSoftwareVersionRegister(), DetectSshVersionRegister(), DetectSslStateRegister(), DetectSslVersionRegister(), DetectStreamSizeRegister(), DetectTagRegister(), DetectTargetRegister(), DetectTcphdrRegister(), DetectTcpmssRegister(), DetectTemplate2Register(), DetectTemplateRegister(), DetectThresholdRegister(), DetectTlsAlpnRegister(), DetectTlsCertChainLenRegister(), DetectTlsCertsRegister(), DetectTlsFingerprintRegister(), DetectTlsIssuerRegister(), DetectTlsJa3HashRegister(), DetectTlsJa3SHashRegister(), DetectTlsJa3SStringRegister(), DetectTlsJa3StringRegister(), DetectTlsRandomBytesRegister(), DetectTlsRandomRegister(), DetectTlsRandomTimeRegister(), DetectTlsRegister(), DetectTlsSerialRegister(), DetectTlsSniRegister(), DetectTlsSubjectAltNameRegister(), DetectTlsSubjectRegister(), DetectTlsValidityRegister(), DetectTlsVersionRegister(), DetectTosRegister(), DetectTransformFromBase64DecodeRegister(), DetectTransformPcrexformRegister(), DetectTtlRegister(), DetectUdphdrRegister(), DetectUricontentRegister(), DetectUrilenRegister(), DetectVlanIdRegister(), DetectVlanLayersRegister(), DetectWindowRegister(), DetectWithinRegister(), DetectXbitsRegister(), EngineAnalysisFP(), EngineAnalysisRules2(), PrefilterSetupRuleGroup(), SCDetectHelperNewKeywordId(), SigFree(), SigMatchFree(), SigMatchStrictEnabled(), SigTableApplyStrictCommandLineOption(), SigTableCleanup(), SigTableHasKeyword(), SigTableInit(), SigTableList(), and SigTableRegisterTests().