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Functions
void	DetectAddressRegister (void)

DetectAddressHead *	DetectAddressHeadInit (void)
	Returns a new instance of DetectAddressHead. More...

void	DetectAddressHeadFree (DetectAddressHead *)
	Frees a DetectAddressHead instance. More...

void	DetectAddressHeadCleanup (DetectAddressHead *)
	Cleans a DetectAddressHead. The functions frees the address group heads(ipv4 and ipv6) inside the DetectAddressHead instance. More...

int	DetectAddressParseString (DetectAddress , const char )

int	DetectAddressParse (const DetectEngineCtx , DetectAddressHead , const char *)
	Parses an address group sent as a character string and updates the DetectAddressHead sent as the argument with the relevant address ranges from the parsed string. More...

DetectAddress *	DetectAddressInit (void)
	Creates and returns a new instance of a DetectAddress. More...

void	DetectAddressFree (DetectAddress *)
	Frees a DetectAddress instance. More...

void	DetectAddressCleanupList (DetectAddress *)
	Frees a list of DetectAddress instances. More...

int	DetectAddressAdd (DetectAddress *, DetectAddress )
	Do a sorted insert, where the top of the list should be the biggest network/range. More...

void	DetectAddressPrintList (DetectAddress *)
	Prints the address data information for all the DetectAddress instances in the DetectAddress list sent as the argument. More...

int	DetectAddressInsert (DetectEngineCtx , DetectAddressHead , DetectAddress *)
	Same as DetectAddressInsert, but then for inserting a address group object. This also makes sure SigGroupContainer lists are handled correctly. More...

int	DetectAddressJoin (DetectEngineCtx , DetectAddress , DetectAddress *)
	Join two addresses groups together. More...

bool	DetectAddressListsAreEqual (DetectAddress list1, DetectAddress list2)
	Checks if two address group lists are equal. More...

DetectAddress *	DetectAddressLookupInHead (const DetectAddressHead , Address )
	Find the group matching address in a group head. More...

DetectAddress *	DetectAddressLookupInList (DetectAddress , DetectAddress )
	Used to check if a DetectAddress list contains an instance with a similar DetectAddress. The comparison done is not the one that checks the memory for the same instance, but one that checks that the two instances hold the same content. More...

int	DetectAddressMatch (DetectAddress , Address )
	Check if a particular address(ipv4 or ipv6) matches the address range in the DetectAddress instance. More...

DetectAddress *	DetectAddressCopy (DetectAddress *)
	Copies the contents of one Address group in DetectAddress and returns a new instance of the DetectAddress that contains the copied address. More...

void	DetectAddressPrint (DetectAddress *)
	Prints the address data held by the DetectAddress. If the address data family is IPv4, we print the the ipv4 address and mask, and if the address data family is IPv6, we print the ipv6 address and mask. More...

int	DetectAddressCmp (DetectAddress , DetectAddress )
	Used to compare 2 address ranges. More...

int	DetectAddressMatchIPv4 (const DetectMatchAddressIPv4 , uint16_t, const Address )
	Match a packets address against a signatures addrs array. More...

int	DetectAddressMatchIPv6 (const DetectMatchAddressIPv6 , uint16_t, const Address )
	Match a packets address against a signatures addrs array. More...

int	DetectAddressTestConfVars (void)

void	DetectAddressTests (void)

int	DetectAddressMapInit (DetectEngineCtx *de_ctx)

void	DetectAddressMapFree (DetectEngineCtx *de_ctx)

const DetectAddressHead *	DetectParseAddress (DetectEngineCtx de_ctx, const char string, bool *contains_negation)

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-address.h.

Function Documentation

int DetectAddressAdd	(	DetectAddress **	head,
		DetectAddress *	ag
	)

Do a sorted insert, where the top of the list should be the biggest network/range.

XXX current sorting only works for overlapping nets

Parameters

head	Pointer to the list of DetectAddress.
ag	Pointer to the DetectAddress that has to be added to the above list.

Return values

0	On successfully inserting the DetectAddress.
-1	On failure.

Definition at line 196 of file detect-engine-address.c.

References ADDRESS_EB, DetectAddressCmp(), Address_::family, head, DetectAddress_::ip, DetectAddressHead_::ipv4_head, DetectAddressHead_::ipv6_head, DetectAddress_::next, DetectAddress_::prev, and SCLogDebug.

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void DetectAddressCleanupList ( DetectAddress * head )

Frees a list of DetectAddress instances.

Parameters

head	Pointer to a list of DetectAddress instances to be freed.

Definition at line 165 of file detect-engine-address.c.

References DetectAddressFree(), DetectAddress_::next, and next.

Referenced by DetectAddressHeadCleanup().

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int DetectAddressCmp	(	DetectAddress *	a,
		DetectAddress *	b
	)

Used to compare 2 address ranges.

Parameters

a	Pointer to the first DetectAddressData to be compared.
b	Pointer to the second DetectAddressData to be compared.

Definition at line 1695 of file detect-engine-address.c.

References ADDRESS_ER, DetectAddressCmpIPv4(), DetectAddressCmpIPv6(), Address_::family, and DetectAddress_::ip.

Referenced by DetectAddressAdd(), DetectAddressInsert(), DetectAddressListsAreEqual(), DetectAddressLookupInList(), and DetectAddressMergeNot().

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DetectAddress* DetectAddressCopy ( DetectAddress * orig )

Copies the contents of one Address group in DetectAddress and returns a new instance of the DetectAddress that contains the copied address.

Parameters

orig	Pointer to the instance of DetectAddress that contains the address data to be copied to the new instance.

Return values

ag	Pointer to the new instance of DetectAddress that contains the copied address.

Definition at line 98 of file detect-engine-address.c.

References COPY_ADDRESS, DetectAddressInit(), DetectAddress_::flags, DetectAddress_::ip, and DetectAddress_::ip2.

Referenced by DetectAddressMergeNot(), and DetectAddressParseString().

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void DetectAddressFree ( DetectAddress * ag )

Frees a DetectAddress instance.

Parameters

ag	Pointer to the DetectAddress instance to be freed.

Definition at line 78 of file detect-engine-address.c.

References SCFree.

Referenced by DetectAddressCleanupList(), DetectAddressCutIPv4(), DetectAddressCutIPv6(), DetectAddressInsert(), DetectAddressJoinIPv4(), DetectAddressJoinIPv6(), DetectAddressMergeNot(), and DetectAddressParseString().

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void DetectAddressHeadCleanup ( DetectAddressHead * gh )

Cleans a DetectAddressHead. The functions frees the address group heads(ipv4 and ipv6) inside the DetectAddressHead instance.

Parameters

gh	Pointer to the DetectAddressHead instance that has to be cleaned.

Definition at line 1592 of file detect-engine-address.c.

References DetectAddressCleanupList(), DetectAddressHead_::ipv4_head, and DetectAddressHead_::ipv6_head.

Referenced by DetectAddressHeadFree(), DetectAddressParseString(), DetectThresholdRegister(), and SCThresholdConfInitContext().

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void DetectAddressHeadFree ( DetectAddressHead * gh )

Frees a DetectAddressHead instance.

Parameters

gh	Pointer to the DetectAddressHead instance to be freed.

Definition at line 1613 of file detect-engine-address.c.

References DetectAddressCutIPv4(), DetectAddressCutIPv6(), DetectAddressCutNotIPv4(), DetectAddressCutNotIPv6(), DetectAddressHeadCleanup(), Address_::family, DetectAddress_::ip, and SCFree.

Referenced by DetectAddressParse(), DetectAddressTestConfVars(), and DetectParseAddress().

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DetectAddressHead* DetectAddressHeadInit ( void )

Returns a new instance of DetectAddressHead.

Return values

gh	Pointer to the new instance of DetectAddressHead.

Definition at line 1574 of file detect-engine-address.c.

References SCMalloc, and unlikely.

Referenced by DetectAddressParse(), DetectAddressTestConfVars(), and DetectParseAddress().

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DetectAddress* DetectAddressInit ( void )

Creates and returns a new instance of a DetectAddress.

Return values

ag	Pointer to the newly created DetectAddress on success; NULL on failure.

Definition at line 63 of file detect-engine-address.c.

References SCMalloc, and unlikely.

Referenced by DetectAddressCopy(), DetectAddressCutIPv4(), DetectAddressCutIPv6(), DetectAddressCutNotIPv4(), DetectAddressCutNotIPv6(), DetectAddressJoinIPv4(), DetectAddressJoinIPv6(), and DetectAddressParseString().

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int DetectAddressInsert	(	DetectEngineCtx *	de_ctx,
		DetectAddressHead *	gh,
		DetectAddress *	new
	)

Same as DetectAddressInsert, but then for inserting a address group object. This also makes sure SigGroupContainer lists are handled correctly.

Parameters

de_ctx	Pointer to the detection engine context.
gh	Pointer to the DetectAddressHead list to which it has to be inserted.
new	Pointer to the DetectAddress, that has to be inserted.

Return values

1	On successfully inserting it.
-1	On error.
0	Not inserted, memory of new is freed.

Definition at line 292 of file detect-engine-address.c.

References ADDRESS_EB, ADDRESS_EQ, ADDRESS_ER, ADDRESS_ES, ADDRESS_GE, ADDRESS_GT, ADDRESS_LE, ADDRESS_LT, BUG_ON, DetectAddressCmp(), DetectAddressFree(), DetectAddressInsert(), head, DetectAddress_::next, DetectAddress_::prev, and SCLogDebug.

Referenced by DetectAddressInsert(), DetectAddressMergeNot(), and DetectAddressParseString().

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int DetectAddressJoin	(	DetectEngineCtx *	de_ctx,
		DetectAddress *	target,
		DetectAddress *	source
	)

Join two addresses groups together.

Parameters

de_ctx	Pointer to the detection engine context.
target	Pointer to the target address group.
source	Pointer to the source address group.

Return values

0	On success.
-1	On failure.

Definition at line 425 of file detect-engine-address.c.

References DetectAddressJoinIPv4(), DetectAddressJoinIPv6(), Address_::family, and DetectAddress_::ip.

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bool DetectAddressListsAreEqual	(	DetectAddress *	list1,
		DetectAddress *	list2
	)

Checks if two address group lists are equal.

Parameters

list1	Pointer to the first address group list.
list2	Pointer to the second address group list.

Return values

true	On success.
false	On failure.

Definition at line 451 of file detect-engine-address.c.

References ADDRESS_EQ, DetectAddressCmp(), and DetectAddress_::next.

Referenced by SigMatchList2DataArray().

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DetectAddress* DetectAddressLookupInHead	(	const DetectAddressHead *	gh,
		Address *	a
	)

Find the group matching address in a group head.

Parameters

gh	Pointer to the address group head(DetectAddressHead instance).
a	Pointer to an Address instance.

Return values

g	On success pointer to an DetectAddress if we find a match for the Address "a", in the DetectAddressHead "gh".

Definition at line 1939 of file detect-engine-address.c.

References DetectAddressMatch(), FALSE, Address_::family, DetectAddress_::ip, DetectAddress_::ip2, DetectAddressHead_::ipv4_head, DetectAddressHead_::ipv6_head, DetectAddress_::next, PrintInet(), SCEnter, SCLogDebug, SCLogInfo, SCReturnPtr, and TRUE.

Referenced by ThresholdIPPairTimeoutCheck().

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DetectAddress* DetectAddressLookupInList	(	DetectAddress *	head,
		DetectAddress *	gr
	)

Used to check if a DetectAddress list contains an instance with a similar DetectAddress. The comparison done is not the one that checks the memory for the same instance, but one that checks that the two instances hold the same content.

Parameters

head	Pointer to the DetectAddress list.
ad	Pointer to the DetectAddress that has to be checked for in the DetectAddress list.

Return values

cur	Returns a pointer to the DetectAddress on a match; NULL if no match.

Definition at line 125 of file detect-engine-address.c.

References ADDRESS_EQ, DetectAddressCmp(), and DetectAddress_::next.

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void DetectAddressMapFree ( DetectEngineCtx * de_ctx )

Definition at line 1440 of file detect-engine-address.c.

References DetectAddressMap_::address, DetectEngineCtx_::address_table, BUG_ON, DetectAddressMap_::contains_negation, HashListTableAdd(), HashListTableFree(), HashListTableLookup(), res, SCCalloc, SCFree, SCStrdup, and DetectAddressMap_::string.

Referenced by DetectEngineCtxFree().

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int DetectAddressMapInit ( DetectEngineCtx * de_ctx )

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

References DetectEngineCtx_::address_table, and HashListTableInit().

Referenced by DetectEngineInspectPktBufferGeneric().

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int DetectAddressMatch	(	DetectAddress *	dd,
		Address *	a
	)

Check if a particular address(ipv4 or ipv6) matches the address range in the DetectAddress instance.

We basically check that the address falls inbetween the address range in DetectAddress.

Parameters

dd	Pointer to the DetectAddress instance.
a	Pointer to an Address instance.
1	On a match.
0	On no match.

Definition at line 1847 of file detect-engine-address.c.

References AddressIPv6Ge(), AddressIPv6Le(), Address_::family, DetectAddress_::ip, DetectAddress_::ip2, SCEnter, SCLogDebug, SCNtohl, and SCReturnInt.

Referenced by DetectAddressLookupInHead().

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int DetectAddressMatchIPv4	(	const DetectMatchAddressIPv4 *	addrs,
		uint16_t	addrs_cnt,
		const Address *	a
	)

Match a packets address against a signatures addrs array.

Parameters

addrs	array of DetectMatchAddressIPv4's
addrs_cnt	array size in members
a	packets address

Return values

0	no match
1	match

Note: addresses in addrs are in host order

Todo:: array should be ordered, so we can break out of the loop

Definition at line 1722 of file detect-engine-address.c.

References DetectMatchAddressIPv4_::ip, DetectMatchAddressIPv4_::ip2, SCEnter, SCNtohl, and SCReturnInt.

Referenced by SigMatchSignaturesGetSgh().

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int DetectAddressMatchIPv6	(	const DetectMatchAddressIPv6 *	addrs,
		uint16_t	addrs_cnt,
		const Address *	a
	)

Match a packets address against a signatures addrs array.

Parameters

addrs	array of DetectMatchAddressIPv6's
addrs_cnt	array size in members
a	packets address

Return values

0	no match
1	match

Note: addresses in addrs are in host order

Todo:: array should be ordered, so we can break out of the loop

Definition at line 1757 of file detect-engine-address.c.

References DetectMatchAddressIPv6_::ip, DetectMatchAddressIPv6_::ip2, SCEnter, SCNtohl, and SCReturnInt.

Referenced by SigMatchSignaturesGetSgh().

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int DetectAddressParse	(	const DetectEngineCtx *	de_ctx,
		DetectAddressHead *	gh,
		const char *	str
	)

Parses an address group sent as a character string and updates the DetectAddressHead sent as the argument with the relevant address ranges from the parsed string.

Parameters

gh	Pointer to the DetectAddressHead.
str	Pointer to the character string containing the address group that has to be parsed.

Return values

1	On success. Contained negation.
0	On success. Did not contain negation.
-1	On failure.

Definition at line 1492 of file detect-engine-address.c.

References DetectAddressMap_::contains_negation, DetectAddressHeadFree(), DetectAddressHeadInit(), DetectAddressMergeNot(), DetectAddressHead_::ipv4_head, DetectAddressHead_::ipv6_head, and SCLogDebug.

Referenced by DetectParseAddress(), and SCThresholdConfInitContext().

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int DetectAddressParseString	(	DetectAddress *	,
		const char *
	)

Definition at line 524 of file detect-engine-address.c.

References Address_::address, address, ADDRESS_FLAG_NOT, AddressIPv6Gt(), AddVariableToResolveList(), BUG_ON, CIDRGet(), DetectAddressCopy(), DetectAddressFree(), DetectAddressHeadCleanup(), DetectAddressInit(), DetectAddressInsert(), DetectAddressIsCompleteIPSpaceIPv4(), DetectAddressMergeNot(), DetectAddressParseString(), DetectAddressPrint(), Address_::family, DetectAddress_::flags, DetectAddress_::ip, DetectAddress_::ip2, DetectAddressHead_::ipv4_head, DetectAddressHead_::ipv6_head, DetectAddress_::next, SC_ERR_ADDRESS_ENGINE_GENERIC, SC_ERR_INVALID_SIGNATURE, SC_ERR_INVALID_YAML_CONF_ENTRY, SC_RULE_VARS_ADDRESS_GROUPS, SCFree, SCLogDebug, SCLogError, SCMalloc, SCNtohl, SCRuleVarsGetConfVar(), SCStrdup, str, strlcpy(), and unlikely.

Referenced by DetectAddressParseString().

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void DetectAddressPrint ( DetectAddress * gr )

Prints the address data held by the DetectAddress. If the address data family is IPv4, we print the the ipv4 address and mask, and if the address data family is IPv6, we print the ipv6 address and mask.

Parameters