#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/udp.h>
#include <netinet/libalias/alias_local.h>
#include <netinet/libalias/alias_mod.h>

Include dependency graph for alias_nbt.c:

Data Structures
struct	NBTArguments

struct	NbtDataHeader

struct	NbtNSHeader

struct	NBTNsQuestion

struct	NBTNsResource

struct	NBTNsRNB

struct	NBTNsResourceA

struct	NBTNsResourceNULL

struct	NBTNsResourceNBSTAT

Macros
#define	NETBIOS_NS_PORT_NUMBER 137

#define	NETBIOS_DGM_PORT_NUMBER 138

#define	OpQuery 0

#define	OpUnknown 4

#define	OpRegist 5

#define	OpRelease 6

#define	OpWACK 7

#define	OpRefresh 8

#define	FMT_ERR 0x1

#define	SRV_ERR 0x2

#define	IMP_ERR 0x4

#define	RFS_ERR 0x5

#define	ACT_ERR 0x6

#define	CFT_ERR 0x7

#define	DGM_DIRECT_UNIQ 0x10

#define	DGM_DIRECT_GROUP 0x11

#define	DGM_BROADCAST 0x12

#define	DGM_ERROR 0x13

#define	DGM_QUERY 0x14

#define	DGM_POSITIVE_RES 0x15

#define	DGM_NEGATIVE_RES 0x16

#define	QS_TYPE_NB 0x0020

#define	QS_TYPE_NBSTAT 0x0021

#define	QS_CLAS_IN 0x0001

#define	RR_TYPE_A 0x0001

#define	RR_TYPE_NS 0x0002

#define	RR_TYPE_NULL 0x000a

#define	RR_TYPE_NB 0x0020

#define	RR_TYPE_NBSTAT 0x0021

#define	RR_CLAS_IN 0x0001

#define	SizeOfNsResource 8

#define	SizeOfNsRNB 6

#define	SizeOfResourceA 6

Functions
	__FBSDID ("$FreeBSD$")

static int	AliasHandleUdpNbt (struct libalias , struct ip , struct alias_link , struct in_addr , u_short)

static int	AliasHandleUdpNbtNS (struct libalias , struct ip , struct alias_link , struct in_addr , u_short , struct in_addr , u_short *)

static int	fingerprint1 (struct libalias la, struct alias_data ah)

static int	protohandler1 (struct libalias la, struct ip pip, struct alias_data *ah)

static int	fingerprint2 (struct libalias la, struct alias_data ah)

static int	protohandler2in (struct libalias la, struct ip pip, struct alias_data *ah)

static int	protohandler2out (struct libalias la, struct ip pip, struct alias_data *ah)

static int	mod_handler (module_t mod, int type, void *data)

	DECLARE_MODULE (alias_nbt, alias_mod, SI_SUB_DRIVERS, SI_ORDER_SECOND)

	MODULE_VERSION (alias_nbt, 1)

	MODULE_DEPEND (alias_nbt, libalias, 1, 1, 1)

static u_char *	AliasHandleName (u_char p, char pmax)

static u_char *	AliasHandleQuestion (u_short count, NBTNsQuestion q, char pmax, NBTArguments *nbtarg)

static u_char *	AliasHandleResourceNB (NBTNsResource q, char pmax, NBTArguments *nbtarg)

static u_char *	AliasHandleResourceA (NBTNsResource q, char pmax, NBTArguments *nbtarg)

static u_char *	AliasHandleResourceNULL (NBTNsResource q, char pmax, NBTArguments *nbtarg)

static u_char *	AliasHandleResourceNS (NBTNsResource q, char pmax, NBTArguments *nbtarg)

static u_char *	AliasHandleResourceNBSTAT (NBTNsResource q, char pmax, NBTArguments *nbtarg)

static u_char *	AliasHandleResource (u_short count, NBTNsResource q, char pmax, NBTArguments *nbtarg)

Variables
struct proto_handler	handlers []

static moduledata_t	alias_mod

Macro Definition Documentation

◆ ACT_ERR

#define ACT_ERR 0x6

Definition at line 222 of file alias_nbt.c.

◆ CFT_ERR

#define CFT_ERR 0x7

Definition at line 223 of file alias_nbt.c.

◆ DGM_BROADCAST

#define DGM_BROADCAST 0x12

Definition at line 320 of file alias_nbt.c.

◆ DGM_DIRECT_GROUP

#define DGM_DIRECT_GROUP 0x11

Definition at line 319 of file alias_nbt.c.

◆ DGM_DIRECT_UNIQ

#define DGM_DIRECT_UNIQ 0x10

Definition at line 318 of file alias_nbt.c.

◆ DGM_ERROR

#define DGM_ERROR 0x13

Definition at line 321 of file alias_nbt.c.

◆ DGM_NEGATIVE_RES

#define DGM_NEGATIVE_RES 0x16

Definition at line 324 of file alias_nbt.c.

◆ DGM_POSITIVE_RES

#define DGM_POSITIVE_RES 0x15

Definition at line 323 of file alias_nbt.c.

◆ DGM_QUERY

#define DGM_QUERY 0x14

Definition at line 322 of file alias_nbt.c.

◆ FMT_ERR

#define FMT_ERR 0x1

Definition at line 218 of file alias_nbt.c.

◆ IMP_ERR

#define IMP_ERR 0x4

Definition at line 220 of file alias_nbt.c.

◆ NETBIOS_DGM_PORT_NUMBER

#define NETBIOS_DGM_PORT_NUMBER 138

Definition at line 72 of file alias_nbt.c.

◆ NETBIOS_NS_PORT_NUMBER

#define NETBIOS_NS_PORT_NUMBER 137

Definition at line 71 of file alias_nbt.c.

◆ OpQuery

#define OpQuery 0

Definition at line 203 of file alias_nbt.c.

◆ OpRefresh

#define OpRefresh 8

Definition at line 208 of file alias_nbt.c.

◆ OpRegist

#define OpRegist 5

Definition at line 205 of file alias_nbt.c.

◆ OpRelease

#define OpRelease 6

Definition at line 206 of file alias_nbt.c.

◆ OpUnknown

#define OpUnknown 4

Definition at line 204 of file alias_nbt.c.

◆ OpWACK

#define OpWACK 7

Definition at line 207 of file alias_nbt.c.

◆ QS_CLAS_IN

#define QS_CLAS_IN 0x0001

Definition at line 407 of file alias_nbt.c.

◆ QS_TYPE_NB

#define QS_TYPE_NB 0x0020

Definition at line 405 of file alias_nbt.c.

◆ QS_TYPE_NBSTAT

#define QS_TYPE_NBSTAT 0x0021

Definition at line 406 of file alias_nbt.c.

◆ RFS_ERR

#define RFS_ERR 0x5

Definition at line 221 of file alias_nbt.c.

◆ RR_CLAS_IN

#define RR_CLAS_IN 0x0001

Definition at line 455 of file alias_nbt.c.

◆ RR_TYPE_A

#define RR_TYPE_A 0x0001

Definition at line 450 of file alias_nbt.c.

◆ RR_TYPE_NB

#define RR_TYPE_NB 0x0020

Definition at line 453 of file alias_nbt.c.

◆ RR_TYPE_NBSTAT

#define RR_TYPE_NBSTAT 0x0021

Definition at line 454 of file alias_nbt.c.

◆ RR_TYPE_NS

#define RR_TYPE_NS 0x0002

Definition at line 451 of file alias_nbt.c.

◆ RR_TYPE_NULL

#define RR_TYPE_NULL 0x000a

Definition at line 452 of file alias_nbt.c.

◆ SizeOfNsResource

#define SizeOfNsResource 8

Definition at line 456 of file alias_nbt.c.

◆ SizeOfNsRNB

#define SizeOfNsRNB 6

Definition at line 464 of file alias_nbt.c.

◆ SizeOfResourceA

#define SizeOfResourceA 6

Definition at line 538 of file alias_nbt.c.

◆ SRV_ERR

#define SRV_ERR 0x2

Definition at line 219 of file alias_nbt.c.

Function Documentation

◆ __FBSDID()

__FBSDID ( "$FreeBSD$" )

◆ AliasHandleName()

static u_char * AliasHandleName	(	u_char *	p,
		char *	pmax
	)

static

Definition at line 251 of file alias_nbt.c.

Referenced by AliasHandleQuestion(), AliasHandleResource(), AliasHandleResourceNS(), and AliasHandleUdpNbt().

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◆ AliasHandleQuestion()

static u_char * AliasHandleQuestion	(	u_short	count,
		NBTNsQuestion *	q,
		char *	pmax,
		NBTArguments *	nbtarg
	)

static

Definition at line 414 of file alias_nbt.c.

References AliasHandleName(), count, QS_TYPE_NB, QS_TYPE_NBSTAT, and NBTNsQuestion::type.

Referenced by AliasHandleUdpNbtNS().

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◆ AliasHandleResource()

static u_char * AliasHandleResource	(	u_short	count,
		NBTNsResource *	q,
		char *	pmax,
		NBTArguments *	nbtarg
	)

static

Definition at line 699 of file alias_nbt.c.

References AliasHandleName(), AliasHandleResourceA(), AliasHandleResourceNB(), AliasHandleResourceNBSTAT(), AliasHandleResourceNS(), AliasHandleResourceNULL(), count, RR_TYPE_A, RR_TYPE_NB, RR_TYPE_NBSTAT, RR_TYPE_NS, RR_TYPE_NULL, and NBTNsResource::type.

Referenced by AliasHandleUdpNbtNS().

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◆ AliasHandleResourceA()

static u_char * AliasHandleResourceA	(	NBTNsResource *	q,
		char *	pmax,
		NBTArguments *	nbtarg
	)

static

Definition at line 544 of file alias_nbt.c.

References NBTNsResourceA::addr, ADJUST_CHECKSUM, INET_NTOA_BUF, inet_ntoa_r(), NBTArguments::newaddr, NBTArguments::oldaddr, NBTNsResource::rdlen, SizeOfResourceA, and NBTArguments::uh_sum.

Referenced by AliasHandleResource().

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◆ AliasHandleResourceNB()

static u_char * AliasHandleResourceNB	(	NBTNsResource *	q,
		char *	pmax,
		NBTArguments *	nbtarg
	)

static

Definition at line 471 of file alias_nbt.c.

References NBTNsRNB::addr, ADJUST_CHECKSUM, INET_NTOA_BUF, inet_ntoa_r(), NBTArguments::newaddr, NBTArguments::oldaddr, NBTNsResource::rdlen, SizeOfNsResource, SizeOfNsRNB, and NBTArguments::uh_sum.

Referenced by AliasHandleResource().

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◆ AliasHandleResourceNBSTAT()

static u_char * AliasHandleResourceNBSTAT	(	NBTNsResource *	q,
		char *	pmax,
		NBTArguments *	nbtarg
	)

static

Definition at line 673 of file alias_nbt.c.

References NBTNsResource::rdlen.

Referenced by AliasHandleResource().

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◆ AliasHandleResourceNS()

static u_char * AliasHandleResourceNS	(	NBTNsResource *	q,
		char *	pmax,
		NBTArguments *	nbtarg
	)

static

Definition at line 640 of file alias_nbt.c.

References AliasHandleName(), and NBTNsResource::rdlen.

Referenced by AliasHandleResource().

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◆ AliasHandleResourceNULL()

static u_char * AliasHandleResourceNULL	(	NBTNsResource *	q,
		char *	pmax,
		NBTArguments *	nbtarg
	)

static

Definition at line 605 of file alias_nbt.c.

References NBTNsResource::rdlen.

Referenced by AliasHandleResource().

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◆ AliasHandleUdpNbt()

static int AliasHandleUdpNbt	(	struct libalias *	la,
		struct ip *	pip,
		struct alias_link *	lnk,
		struct in_addr *	alias_address,
		u_short	alias_port
	)

static

Definition at line 327 of file alias_nbt.c.

References ADJUST_CHECKSUM, AliasHandleName(), DGM_BROADCAST, DGM_DIRECT_GROUP, DGM_DIRECT_UNIQ, DGM_ERROR, DGM_NEGATIVE_RES, DGM_POSITIVE_RES, DGM_QUERY, INET_NTOA_BUF, inet_ntoa_r(), NbtDataHeader::source_ip, NbtDataHeader::source_port, NbtDataHeader::type, udphdr::uh_sum, and udphdr::uh_ulen.

Referenced by protohandler1().

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◆ AliasHandleUdpNbtNS()

static int AliasHandleUdpNbtNS	(	struct libalias *	la,
		struct ip *	pip,
		struct alias_link *	lnk,
		struct in_addr *	alias_address,
		u_short *	alias_port,
		struct in_addr *	original_address,
		u_short *	original_port
	)

static

Definition at line 753 of file alias_nbt.c.

References AliasHandleQuestion(), AliasHandleResource(), NbtNSHeader::ancount, NbtNSHeader::arcount, NbtNSHeader::dir, NbtNSHeader::nametrid, NBTArguments::newaddr, NBTArguments::newport, NbtNSHeader::nmflags, NbtNSHeader::nscount, NBTArguments::oldaddr, NBTArguments::oldport, NbtNSHeader::opcode, NbtNSHeader::qdcount, NbtNSHeader::rcode, NBTArguments::uh_sum, udphdr::uh_sum, and udphdr::uh_ulen.

Referenced by protohandler2in(), and protohandler2out().

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◆ DECLARE_MODULE()

DECLARE_MODULE	(	alias_nbt	,
		alias_mod	,
		SI_SUB_DRIVERS	,
		SI_ORDER_SECOND
	)

◆ fingerprint1()

static int fingerprint1	(	struct libalias *	la,
		struct alias_data *	ah
	)

static

Definition at line 82 of file alias_nbt.c.

References alias_data::aaddr, alias_data::aport, alias_data::dport, alias_data::lnk, NETBIOS_DGM_PORT_NUMBER, and alias_data::sport.

◆ fingerprint2()

static int fingerprint2	(	struct libalias *	la,
		struct alias_data *	ah
	)

static

Definition at line 100 of file alias_nbt.c.

References alias_data::aaddr, alias_data::aport, alias_data::dport, alias_data::lnk, NETBIOS_NS_PORT_NUMBER, and alias_data::sport.

◆ mod_handler()

static int mod_handler	(	module_t	mod,
		int	type,
		void *	data
	)

static

Definition at line 153 of file alias_nbt.c.

References handlers, LibAliasAttachHandlers(), and LibAliasDetachHandlers().

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◆ MODULE_DEPEND()

MODULE_DEPEND	(	alias_nbt	,
		libalias	,
		1	,
		1	,
		1
	)

◆ MODULE_VERSION()

MODULE_VERSION	(	alias_nbt	,
		1
	)

◆ protohandler1()

static int protohandler1	(	struct libalias *	la,
		struct ip *	pip,
		struct alias_data *	ah
	)

static

Definition at line 94 of file alias_nbt.c.

References alias_data::aaddr, AliasHandleUdpNbt(), alias_data::aport, and alias_data::lnk.

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◆ protohandler2in()

static int protohandler2in	(	struct libalias *	la,
		struct ip *	pip,
		struct alias_data *	ah
	)

static

Definition at line 112 of file alias_nbt.c.

References alias_data::aaddr, AliasHandleUdpNbtNS(), alias_data::aport, alias_data::dport, alias_data::lnk, and alias_data::oaddr.

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◆ protohandler2out()

static int protohandler2out	(	struct libalias *	la,
		struct ip *	pip,
		struct alias_data *	ah
	)

static

Definition at line 120 of file alias_nbt.c.

References alias_data::aaddr, AliasHandleUdpNbtNS(), alias_data::aport, alias_data::lnk, and alias_data::sport.

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Variable Documentation

◆ alias_mod

moduledata_t alias_mod

static

Initial value:

= {
       "alias_nbt", mod_handler, NULL
}

Definition at line 175 of file alias_nbt.c.

◆ handlers

struct proto_handler handlers[]

Initial value:

= {
        {
          .pri = 130,
          .dir = IN|OUT,
          .proto = UDP,
          .fingerprint = &fingerprint1,
          .protohandler = &protohandler1
        },
        {
          .pri = 140,
          .dir = IN,
          .proto = UDP,
          .fingerprint = &fingerprint2,
          .protohandler = &protohandler2in
        },
        {
          .pri = 140,
          .dir = OUT,
          .proto = UDP,
          .fingerprint = &fingerprint2,
          .protohandler = &protohandler2out
        },
        { EOH }
}

Definition at line 127 of file alias_nbt.c.

Referenced by mod_handler().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ ACT_ERR

◆ CFT_ERR

◆ DGM_BROADCAST

◆ DGM_DIRECT_GROUP

◆ DGM_DIRECT_UNIQ

◆ DGM_ERROR

◆ DGM_NEGATIVE_RES

◆ DGM_POSITIVE_RES

◆ DGM_QUERY

◆ FMT_ERR

◆ IMP_ERR

◆ NETBIOS_DGM_PORT_NUMBER

◆ NETBIOS_NS_PORT_NUMBER

◆ OpQuery

◆ OpRefresh

◆ OpRegist

◆ OpRelease

◆ OpUnknown

◆ OpWACK

◆ QS_CLAS_IN

◆ QS_TYPE_NB

◆ QS_TYPE_NBSTAT

◆ RFS_ERR

◆ RR_CLAS_IN

◆ RR_TYPE_A

◆ RR_TYPE_NB

◆ RR_TYPE_NBSTAT

◆ RR_TYPE_NS

◆ RR_TYPE_NULL

◆ SizeOfNsResource

◆ SizeOfNsRNB

◆ SizeOfResourceA

◆ SRV_ERR

Function Documentation

◆ __FBSDID()

◆ AliasHandleName()

◆ AliasHandleQuestion()

◆ AliasHandleResource()

◆ AliasHandleResourceA()

◆ AliasHandleResourceNB()

◆ AliasHandleResourceNBSTAT()

◆ AliasHandleResourceNS()

◆ AliasHandleResourceNULL()

◆ AliasHandleUdpNbt()

◆ AliasHandleUdpNbtNS()

◆ DECLARE_MODULE()

◆ fingerprint1()

◆ fingerprint2()

◆ mod_handler()

◆ MODULE_DEPEND()

◆ MODULE_VERSION()

◆ protohandler1()

◆ protohandler2in()

◆ protohandler2out()

Variable Documentation

◆ alias_mod

◆ handlers