#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/udp.h>
#include <net/checksum.h>
#include <net/udp.h>
#include <net/netfilter/nf_nat.h>
#include <net/netfilter/nf_conntrack_expect.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_nat_helper.h>
#include <linux/netfilter/nf_conntrack_snmp.h>

Data Structures
struct	oct1_map

struct	asn1_ctx

struct	asn1_octstr

union	snmp_syntax

struct	snmp_object

struct	snmp_request

struct	snmp_v1_trap

struct	snmp_cnv

Macros
#define	SNMP_PORT 161

#define	SNMP_TRAP_PORT 162

#define	NOCT1(n) ((u8 )(n))

#define	ASN1_UNI 0 /* Universal */

#define	ASN1_APL 1 /* Application */

#define	ASN1_CTX 2 /* Context */

#define	ASN1_PRV 3 /* Private */

#define	ASN1_EOC 0 /* End Of Contents */

#define	ASN1_BOL 1 /* Boolean */

#define	ASN1_INT 2 /* Integer */

#define	ASN1_BTS 3 /* Bit String */

#define	ASN1_OTS 4 /* Octet String */

#define	ASN1_NUL 5 /* Null */

#define	ASN1_OJI 6 /* Object Identifier */

#define	ASN1_OJD 7 /* Object Description */

#define	ASN1_EXT 8 /* External */

#define	ASN1_SEQ 16 /* Sequence */

#define	ASN1_SET 17 /* Set */

#define	ASN1_NUMSTR 18 /* Numerical String */

#define	ASN1_PRNSTR 19 /* Printable String */

#define	ASN1_TEXSTR 20 /* Teletext String */

#define	ASN1_VIDSTR 21 /* Video String */

#define	ASN1_IA5STR 22 /* IA5 String */

#define	ASN1_UNITIM 23 /* Universal Time */

#define	ASN1_GENTIM 24 /* General Time */

#define	ASN1_GRASTR 25 /* Graphical String */

#define	ASN1_VISSTR 26 /* Visible String */

#define	ASN1_GENSTR 27 /* General String */

#define	ASN1_PRI 0 /* Primitive */

#define	ASN1_CON 1 /* Constructed */

#define	ASN1_ERR_NOERROR 0

#define	ASN1_ERR_DEC_EMPTY 2

#define	ASN1_ERR_DEC_EOC_MISMATCH 3

#define	ASN1_ERR_DEC_LENGTH_MISMATCH 4

#define	ASN1_ERR_DEC_BADVALUE 5

#define	SNMP_V1 0

#define	SNMP_V2C 1

#define	SNMP_V2 2

#define	SNMP_V3 3

#define	SNMP_SIZE_COMM 256

#define	SNMP_SIZE_OBJECTID 128

#define	SNMP_SIZE_BUFCHR 256

#define	SNMP_SIZE_BUFINT 128

#define	SNMP_SIZE_SMALLOBJECTID 16

#define	SNMP_PDU_GET 0

#define	SNMP_PDU_NEXT 1

#define	SNMP_PDU_RESPONSE 2

#define	SNMP_PDU_SET 3

#define	SNMP_PDU_TRAP1 4

#define	SNMP_PDU_BULK 5

#define	SNMP_PDU_INFORM 6

#define	SNMP_PDU_TRAP2 7

#define	SNMP_NOERROR 0

#define	SNMP_TOOBIG 1

#define	SNMP_NOSUCHNAME 2

#define	SNMP_BADVALUE 3

#define	SNMP_READONLY 4

#define	SNMP_GENERROR 5

#define	SNMP_NOACCESS 6

#define	SNMP_WRONGTYPE 7

#define	SNMP_WRONGLENGTH 8

#define	SNMP_WRONGENCODING 9

#define	SNMP_WRONGVALUE 10

#define	SNMP_NOCREATION 11

#define	SNMP_INCONSISTENTVALUE 12

#define	SNMP_RESOURCEUNAVAILABLE 13

#define	SNMP_COMMITFAILED 14

#define	SNMP_UNDOFAILED 15

#define	SNMP_AUTHORIZATIONERROR 16

#define	SNMP_NOTWRITABLE 17

#define	SNMP_INCONSISTENTNAME 18

#define	SNMP_TRAP_COLDSTART 0

#define	SNMP_TRAP_WARMSTART 1

#define	SNMP_TRAP_LINKDOWN 2

#define	SNMP_TRAP_LINKUP 3

#define	SNMP_TRAP_AUTFAILURE 4

#define	SNMP_TRAP_EQPNEIGHBORLOSS 5

#define	SNMP_TRAP_ENTSPECIFIC 6

#define	SNMP_NULL 0

#define	SNMP_INTEGER 1 /* l */

#define	SNMP_OCTETSTR 2 /* c */

#define	SNMP_DISPLAYSTR 2 /* c */

#define	SNMP_OBJECTID 3 /* ul */

#define	SNMP_IPADDR 4 /* uc */

#define	SNMP_COUNTER 5 /* ul */

#define	SNMP_GAUGE 6 /* ul */

#define	SNMP_TIMETICKS 7 /* ul */

#define	SNMP_OPAQUE 8 /* c */

#define	SNMP_UINTEGER 5 /* ul */

#define	SNMP_BITSTR 9 /* uc */

#define	SNMP_NSAP 10 /* uc */

#define	SNMP_COUNTER64 11 /* ul */

#define	SNMP_NOSUCHOBJECT 12

#define	SNMP_NOSUCHINSTANCE 13

#define	SNMP_ENDOFMIBVIEW 14

#define	SNMP_IPA 0

#define	SNMP_CNT 1

#define	SNMP_GGE 2

#define	SNMP_TIT 3

#define	SNMP_OPQ 4

#define	SNMP_C64 6

#define	SERR_NSO 0

#define	SERR_NSI 1

#define	SERR_EOM 2

Functions
	MODULE_LICENSE ("GPL")

	MODULE_AUTHOR ("James Morris <[email protected]>")

	MODULE_DESCRIPTION ("Basic SNMP Application Layer Gateway")

	MODULE_ALIAS ("ip_nat_snmp_basic")

	module_init (nf_nat_snmp_basic_init)

	module_exit (nf_nat_snmp_basic_fini)

	module_param (debug, int, 0600)

Macro Definition Documentation

#define ASN1_APL 1 /* Application */

Definition at line 91 of file nf_nat_snmp_basic.c.

#define ASN1_BOL 1 /* Boolean */

Definition at line 97 of file nf_nat_snmp_basic.c.

#define ASN1_BTS 3 /* Bit String */

Definition at line 99 of file nf_nat_snmp_basic.c.

#define ASN1_CON 1 /* Constructed */

Definition at line 120 of file nf_nat_snmp_basic.c.

#define ASN1_CTX 2 /* Context */

Definition at line 92 of file nf_nat_snmp_basic.c.

#define ASN1_EOC 0 /* End Of Contents */

Definition at line 96 of file nf_nat_snmp_basic.c.

#define ASN1_ERR_DEC_BADVALUE 5

Definition at line 129 of file nf_nat_snmp_basic.c.

#define ASN1_ERR_DEC_EMPTY 2

Definition at line 126 of file nf_nat_snmp_basic.c.

#define ASN1_ERR_DEC_EOC_MISMATCH 3

Definition at line 127 of file nf_nat_snmp_basic.c.

#define ASN1_ERR_DEC_LENGTH_MISMATCH 4

Definition at line 128 of file nf_nat_snmp_basic.c.

#define ASN1_ERR_NOERROR 0

Definition at line 125 of file nf_nat_snmp_basic.c.

#define ASN1_EXT 8 /* External */

Definition at line 104 of file nf_nat_snmp_basic.c.

#define ASN1_GENSTR 27 /* General String */

Definition at line 116 of file nf_nat_snmp_basic.c.

#define ASN1_GENTIM 24 /* General Time */

Definition at line 113 of file nf_nat_snmp_basic.c.

#define ASN1_GRASTR 25 /* Graphical String */

Definition at line 114 of file nf_nat_snmp_basic.c.

#define ASN1_IA5STR 22 /* IA5 String */

Definition at line 111 of file nf_nat_snmp_basic.c.

#define ASN1_INT 2 /* Integer */

Definition at line 98 of file nf_nat_snmp_basic.c.

#define ASN1_NUL 5 /* Null */

Definition at line 101 of file nf_nat_snmp_basic.c.

#define ASN1_NUMSTR 18 /* Numerical String */

Definition at line 107 of file nf_nat_snmp_basic.c.

#define ASN1_OJD 7 /* Object Description */

Definition at line 103 of file nf_nat_snmp_basic.c.

#define ASN1_OJI 6 /* Object Identifier */

Definition at line 102 of file nf_nat_snmp_basic.c.

#define ASN1_OTS 4 /* Octet String */

Definition at line 100 of file nf_nat_snmp_basic.c.

#define ASN1_PRI 0 /* Primitive */

Definition at line 119 of file nf_nat_snmp_basic.c.

#define ASN1_PRNSTR 19 /* Printable String */

Definition at line 108 of file nf_nat_snmp_basic.c.

#define ASN1_PRV 3 /* Private */

Definition at line 93 of file nf_nat_snmp_basic.c.

#define ASN1_SEQ 16 /* Sequence */

Definition at line 105 of file nf_nat_snmp_basic.c.

#define ASN1_SET 17 /* Set */

Definition at line 106 of file nf_nat_snmp_basic.c.

#define ASN1_TEXSTR 20 /* Teletext String */

Definition at line 109 of file nf_nat_snmp_basic.c.

#define ASN1_UNI 0 /* Universal */

Definition at line 90 of file nf_nat_snmp_basic.c.

#define ASN1_UNITIM 23 /* Universal Time */

Definition at line 112 of file nf_nat_snmp_basic.c.

#define ASN1_VIDSTR 21 /* Video String */

Definition at line 110 of file nf_nat_snmp_basic.c.

#define ASN1_VISSTR 26 /* Visible String */

Definition at line 115 of file nf_nat_snmp_basic.c.

#define NOCT1 ( n ) (*(u8 *)(n))

Definition at line 66 of file nf_nat_snmp_basic.c.

#define SERR_EOM 2

Definition at line 618 of file nf_nat_snmp_basic.c.

#define SERR_NSI 1

Definition at line 617 of file nf_nat_snmp_basic.c.

#define SERR_NSO 0

Definition at line 616 of file nf_nat_snmp_basic.c.

#define SNMP_AUTHORIZATIONERROR 16

Definition at line 539 of file nf_nat_snmp_basic.c.

#define SNMP_BADVALUE 3

Definition at line 526 of file nf_nat_snmp_basic.c.

#define SNMP_BITSTR 9 /* uc */

Definition at line 566 of file nf_nat_snmp_basic.c.

#define SNMP_C64 6

Definition at line 613 of file nf_nat_snmp_basic.c.

#define SNMP_CNT 1

Definition at line 609 of file nf_nat_snmp_basic.c.

#define SNMP_COMMITFAILED 14

Definition at line 537 of file nf_nat_snmp_basic.c.

#define SNMP_COUNTER 5 /* ul */

Definition at line 559 of file nf_nat_snmp_basic.c.

#define SNMP_COUNTER64 11 /* ul */

Definition at line 568 of file nf_nat_snmp_basic.c.

#define SNMP_DISPLAYSTR 2 /* c */

Definition at line 556 of file nf_nat_snmp_basic.c.

#define SNMP_ENDOFMIBVIEW 14

Definition at line 571 of file nf_nat_snmp_basic.c.

#define SNMP_GAUGE 6 /* ul */

Definition at line 560 of file nf_nat_snmp_basic.c.

#define SNMP_GENERROR 5

Definition at line 528 of file nf_nat_snmp_basic.c.

#define SNMP_GGE 2

Definition at line 610 of file nf_nat_snmp_basic.c.

#define SNMP_INCONSISTENTNAME 18

Definition at line 541 of file nf_nat_snmp_basic.c.

#define SNMP_INCONSISTENTVALUE 12

Definition at line 535 of file nf_nat_snmp_basic.c.

#define SNMP_INTEGER 1 /* l */

Definition at line 554 of file nf_nat_snmp_basic.c.

#define SNMP_IPA 0

Definition at line 608 of file nf_nat_snmp_basic.c.

#define SNMP_IPADDR 4 /* uc */

Definition at line 558 of file nf_nat_snmp_basic.c.

#define SNMP_NOACCESS 6

Definition at line 529 of file nf_nat_snmp_basic.c.

#define SNMP_NOCREATION 11

Definition at line 534 of file nf_nat_snmp_basic.c.

#define SNMP_NOERROR 0

Definition at line 523 of file nf_nat_snmp_basic.c.

#define SNMP_NOSUCHINSTANCE 13

Definition at line 570 of file nf_nat_snmp_basic.c.

#define SNMP_NOSUCHNAME 2

Definition at line 525 of file nf_nat_snmp_basic.c.

#define SNMP_NOSUCHOBJECT 12

Definition at line 569 of file nf_nat_snmp_basic.c.

#define SNMP_NOTWRITABLE 17

Definition at line 540 of file nf_nat_snmp_basic.c.

#define SNMP_NSAP 10 /* uc */

Definition at line 567 of file nf_nat_snmp_basic.c.

#define SNMP_NULL 0

Definition at line 553 of file nf_nat_snmp_basic.c.

#define SNMP_OBJECTID 3 /* ul */

Definition at line 557 of file nf_nat_snmp_basic.c.

#define SNMP_OCTETSTR 2 /* c */

Definition at line 555 of file nf_nat_snmp_basic.c.

#define SNMP_OPAQUE 8 /* c */

Definition at line 562 of file nf_nat_snmp_basic.c.

#define SNMP_OPQ 4

Definition at line 612 of file nf_nat_snmp_basic.c.

#define SNMP_PDU_BULK 5

Definition at line 518 of file nf_nat_snmp_basic.c.

#define SNMP_PDU_GET 0

Definition at line 513 of file nf_nat_snmp_basic.c.

#define SNMP_PDU_INFORM 6

Definition at line 519 of file nf_nat_snmp_basic.c.

#define SNMP_PDU_NEXT 1

Definition at line 514 of file nf_nat_snmp_basic.c.

#define SNMP_PDU_RESPONSE 2

Definition at line 515 of file nf_nat_snmp_basic.c.

#define SNMP_PDU_SET 3

Definition at line 516 of file nf_nat_snmp_basic.c.

#define SNMP_PDU_TRAP1 4

Definition at line 517 of file nf_nat_snmp_basic.c.

#define SNMP_PDU_TRAP2 7

Definition at line 520 of file nf_nat_snmp_basic.c.

#define SNMP_PORT 161

Definition at line 64 of file nf_nat_snmp_basic.c.

#define SNMP_READONLY 4

Definition at line 527 of file nf_nat_snmp_basic.c.

#define SNMP_RESOURCEUNAVAILABLE 13

Definition at line 536 of file nf_nat_snmp_basic.c.

#define SNMP_SIZE_BUFCHR 256

Definition at line 508 of file nf_nat_snmp_basic.c.

#define SNMP_SIZE_BUFINT 128

Definition at line 509 of file nf_nat_snmp_basic.c.

#define SNMP_SIZE_COMM 256

Definition at line 506 of file nf_nat_snmp_basic.c.

#define SNMP_SIZE_OBJECTID 128

Definition at line 507 of file nf_nat_snmp_basic.c.

#define SNMP_SIZE_SMALLOBJECTID 16

Definition at line 510 of file nf_nat_snmp_basic.c.

#define SNMP_TIMETICKS 7 /* ul */

Definition at line 561 of file nf_nat_snmp_basic.c.

#define SNMP_TIT 3

Definition at line 611 of file nf_nat_snmp_basic.c.

#define SNMP_TOOBIG 1

Definition at line 524 of file nf_nat_snmp_basic.c.

#define SNMP_TRAP_AUTFAILURE 4

Definition at line 548 of file nf_nat_snmp_basic.c.

#define SNMP_TRAP_COLDSTART 0

Definition at line 544 of file nf_nat_snmp_basic.c.

#define SNMP_TRAP_ENTSPECIFIC 6

Definition at line 550 of file nf_nat_snmp_basic.c.

#define SNMP_TRAP_EQPNEIGHBORLOSS 5

Definition at line 549 of file nf_nat_snmp_basic.c.

#define SNMP_TRAP_LINKDOWN 2

Definition at line 546 of file nf_nat_snmp_basic.c.

#define SNMP_TRAP_LINKUP 3

Definition at line 547 of file nf_nat_snmp_basic.c.

#define SNMP_TRAP_PORT 162

Definition at line 65 of file nf_nat_snmp_basic.c.

#define SNMP_TRAP_WARMSTART 1

Definition at line 545 of file nf_nat_snmp_basic.c.

#define SNMP_UINTEGER 5 /* ul */

Definition at line 565 of file nf_nat_snmp_basic.c.

#define SNMP_UNDOFAILED 15

Definition at line 538 of file nf_nat_snmp_basic.c.

#define SNMP_V1 0

Definition at line 500 of file nf_nat_snmp_basic.c.

#define SNMP_V2 2

Definition at line 502 of file nf_nat_snmp_basic.c.

#define SNMP_V2C 1

Definition at line 501 of file nf_nat_snmp_basic.c.

#define SNMP_V3 3

Definition at line 503 of file nf_nat_snmp_basic.c.

#define SNMP_WRONGENCODING 9

Definition at line 532 of file nf_nat_snmp_basic.c.

#define SNMP_WRONGLENGTH 8

Definition at line 531 of file nf_nat_snmp_basic.c.

#define SNMP_WRONGTYPE 7

Definition at line 530 of file nf_nat_snmp_basic.c.

#define SNMP_WRONGVALUE 10

Definition at line 533 of file nf_nat_snmp_basic.c.

Function Documentation

MODULE_ALIAS ( "ip_nat_snmp_basic" )

MODULE_AUTHOR ( "James Morris <[email protected]>" )

MODULE_DESCRIPTION ( "Basic SNMP Application Layer Gateway" )

module_exit ( nf_nat_snmp_basic_fini )

module_init ( nf_nat_snmp_basic_init )

MODULE_LICENSE ( "GPL" )

module_param	(	debug	,
		int	,
		0600
	)

Data Structures

Macros

Functions

Macro Definition Documentation

Function Documentation