nf_conntrack_sip.c File Reference

#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/skbuff.h>
#include <linux/inet.h>
#include <linux/in.h>
#include <linux/udp.h>
#include <linux/tcp.h>
#include <linux/netfilter.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_expect.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_zones.h>
#include <linux/netfilter/nf_conntrack_sip.h>

Go to the source code of this file.

Macros
#define	MAX_PORTS   8

Functions
	MODULE_LICENSE ("GPL")
	MODULE_AUTHOR ("Christian Hentschel <chentschel@arnet.com.ar>")
	MODULE_DESCRIPTION ("SIP connection tracking helper")
	MODULE_ALIAS ("ip_conntrack_sip")
	MODULE_ALIAS_NFCT_HELPER ("sip")
	module_param_array (ports, ushort,&ports_c, 0400)
	MODULE_PARM_DESC (ports,"port numbers of SIP servers")
	module_param (sip_timeout, uint, 0600)
	MODULE_PARM_DESC (sip_timeout,"timeout for the master SIP session")
	module_param (sip_direct_signalling, int, 0600)
	MODULE_PARM_DESC (sip_direct_signalling,"expect incoming calls from registrar ""only (default 1)")
	module_param (sip_direct_media, int, 0600)
	MODULE_PARM_DESC (sip_direct_media,"Expect Media streams between signalling ""endpoints only (default 1)")
	EXPORT_SYMBOL_GPL (nf_nat_sip_hook)
	EXPORT_SYMBOL_GPL (nf_nat_sip_seq_adjust_hook)
	EXPORT_SYMBOL_GPL (nf_nat_sip_expect_hook)
	EXPORT_SYMBOL_GPL (nf_nat_sdp_addr_hook)
	EXPORT_SYMBOL_GPL (nf_nat_sdp_port_hook)
	EXPORT_SYMBOL_GPL (nf_nat_sdp_session_hook)
	EXPORT_SYMBOL_GPL (nf_nat_sdp_media_hook)
int	ct_sip_parse_request (const struct nf_conn *ct, const char *dptr, unsigned int datalen, unsigned int *matchoff, unsigned int *matchlen, union nf_inet_addr *addr, __be16 *port)
	EXPORT_SYMBOL_GPL (ct_sip_parse_request)
int	ct_sip_get_header (const struct nf_conn *ct, const char *dptr, unsigned int dataoff, unsigned int datalen, enum sip_header_types type, unsigned int *matchoff, unsigned int *matchlen)
	EXPORT_SYMBOL_GPL (ct_sip_get_header)
int	ct_sip_parse_header_uri (const struct nf_conn *ct, const char *dptr, unsigned int *dataoff, unsigned int datalen, enum sip_header_types type, int *in_header, unsigned int *matchoff, unsigned int *matchlen, union nf_inet_addr *addr, __be16 *port)
	EXPORT_SYMBOL_GPL (ct_sip_parse_header_uri)
int	ct_sip_parse_address_param (const struct nf_conn *ct, const char *dptr, unsigned int dataoff, unsigned int datalen, const char *name, unsigned int *matchoff, unsigned int *matchlen, union nf_inet_addr *addr, bool delim)
	EXPORT_SYMBOL_GPL (ct_sip_parse_address_param)
int	ct_sip_parse_numerical_param (const struct nf_conn *ct, const char *dptr, unsigned int dataoff, unsigned int datalen, const char *name, unsigned int *matchoff, unsigned int *matchlen, unsigned int *val)
	EXPORT_SYMBOL_GPL (ct_sip_parse_numerical_param)
int	ct_sip_get_sdp_header (const struct nf_conn *ct, const char *dptr, unsigned int dataoff, unsigned int datalen, enum sdp_header_types type, enum sdp_header_types term, unsigned int *matchoff, unsigned int *matchlen)
	EXPORT_SYMBOL_GPL (ct_sip_get_sdp_header)
	module_init (nf_conntrack_sip_init)
	module_exit (nf_conntrack_sip_fini)

Variables
unsigned int(*	nf_nat_sip_hook )(struct sk_buff *skb, unsigned int protoff, unsigned int dataoff, const char **dptr, unsigned int *datalen) __read_mostly
void(*	nf_nat_sip_seq_adjust_hook )(struct sk_buff *skb, unsigned int protoff, s16 off) __read_mostly
unsigned int(*	nf_nat_sip_expect_hook )(struct sk_buff *skb, unsigned int protoff, unsigned int dataoff, const char **dptr, unsigned int *datalen, struct nf_conntrack_expect *exp, unsigned int matchoff, unsigned int matchlen) __read_mostly
unsigned int(*	nf_nat_sdp_addr_hook )(struct sk_buff *skb, unsigned int protoff, unsigned int dataoff, const char **dptr, unsigned int *datalen, unsigned int sdpoff, enum sdp_header_types type, enum sdp_header_types term, const union nf_inet_addr *addr) __read_mostly
unsigned int(*	nf_nat_sdp_port_hook )(struct sk_buff *skb, unsigned int protoff, unsigned int dataoff, const char **dptr, unsigned int *datalen, unsigned int matchoff, unsigned int matchlen, u_int16_t port) __read_mostly
unsigned int(*	nf_nat_sdp_session_hook )(struct sk_buff *skb, unsigned int protoff, unsigned int dataoff, const char **dptr, unsigned int *datalen, unsigned int sdpoff, const union nf_inet_addr *addr) __read_mostly
unsigned int(*	nf_nat_sdp_media_hook )(struct sk_buff *skb, unsigned int protoff, unsigned int dataoff, const char **dptr, unsigned int *datalen, struct nf_conntrack_expect *rtp_exp, struct nf_conntrack_expect *rtcp_exp, unsigned int mediaoff, unsigned int medialen, union nf_inet_addr *rtp_addr) __read_mostly

Macro Definition Documentation

#define MAX_PORTS   8

Definition at line 35 of file nf_conntrack_sip.c.

Function Documentation

int ct_sip_get_header	(	const struct nf_conn *	ct,
		const char *	dptr,
		unsigned int	dataoff,
		unsigned int	datalen,
		enum sip_header_types	type,
		unsigned int *	matchoff,
		unsigned int *	matchlen
	)

Definition at line 417 of file nf_conntrack_sip.c.

int ct_sip_get_sdp_header	(	const struct nf_conn *	ct,
		const char *	dptr,
		unsigned int	dataoff,
		unsigned int	datalen,
		enum sdp_header_types	type,
		enum sdp_header_types	term,
		unsigned int *	matchoff,
		unsigned int *	matchlen
	)

Definition at line 777 of file nf_conntrack_sip.c.

int ct_sip_parse_address_param	(	const struct nf_conn *	ct,
		const char *	dptr,
		unsigned int	dataoff,
		unsigned int	datalen,
		const char *	name,
		unsigned int *	matchoff,
		unsigned int *	matchlen,
		union nf_inet_addr *	addr,
		bool	delim
	)

Definition at line 616 of file nf_conntrack_sip.c.

int ct_sip_parse_header_uri	(	const struct nf_conn *	ct,
		const char *	dptr,
		unsigned int *	dataoff,
		unsigned int	datalen,
		enum sip_header_types	type,
		int *	in_header,
		unsigned int *	matchoff,
		unsigned int *	matchlen,
		union nf_inet_addr *	addr,
		__be16 *	port
	)

Definition at line 555 of file nf_conntrack_sip.c.

int ct_sip_parse_numerical_param	(	const struct nf_conn *	ct,
		const char *	dptr,
		unsigned int	dataoff,
		unsigned int	datalen,
		const char *	name,
		unsigned int *	matchoff,
		unsigned int *	matchlen,
		unsigned int *	val
	)

Definition at line 643 of file nf_conntrack_sip.c.

int ct_sip_parse_request	(	const struct nf_conn *	ct,
		const char *	dptr,
		unsigned int	datalen,
		unsigned int *	matchoff,
		unsigned int *	matchlen,
		union nf_inet_addr *	addr,
		__be16 *	port
	)

Definition at line 286 of file nf_conntrack_sip.c.

EXPORT_SYMBOL_GPL

(

nf_nat_sip_hook

)

EXPORT_SYMBOL_GPL

(

nf_nat_sip_seq_adjust_hook

)

EXPORT_SYMBOL_GPL

(

nf_nat_sip_expect_hook

)

EXPORT_SYMBOL_GPL

(

nf_nat_sdp_addr_hook

)

EXPORT_SYMBOL_GPL

(

nf_nat_sdp_port_hook

)

EXPORT_SYMBOL_GPL

(

nf_nat_sdp_session_hook

)

EXPORT_SYMBOL_GPL

(

nf_nat_sdp_media_hook

)

EXPORT_SYMBOL_GPL

(

ct_sip_parse_request

)

EXPORT_SYMBOL_GPL

(

ct_sip_get_header

)

EXPORT_SYMBOL_GPL

(

ct_sip_parse_header_uri

)

EXPORT_SYMBOL_GPL

(

ct_sip_parse_address_param

)

EXPORT_SYMBOL_GPL

(

ct_sip_parse_numerical_param

)

EXPORT_SYMBOL_GPL

(

ct_sip_get_sdp_header

)

MODULE_ALIAS

(

"ip_conntrack_sip"

)

MODULE_ALIAS_NFCT_HELPER

(

"sip"

)

MODULE_AUTHOR

(

"Christian Hentschel <chentschel@arnet.com.ar>"

)

MODULE_DESCRIPTION

(

"SIP connection tracking helper"

)

module_exit

(

nf_conntrack_sip_fini

)

module_init

(

nf_conntrack_sip_init

)

MODULE_LICENSE

(

"GPL"

)

module_param	(	sip_timeout	,
		uint	,
		0600
	)

module_param	(	sip_direct_signalling	,
		int	,
		0600
	)

module_param	(	sip_direct_media	,
		int	,
		0600
	)

module_param_array	(	ports	,
		ushort	,
		&	ports_c,
		0400
	)

MODULE_PARM_DESC	(	ports	,
		"port numbers of SIP servers"
	)

MODULE_PARM_DESC	(	sip_timeout	,
		"timeout for the master SIP session"
	)

MODULE_PARM_DESC	(	sip_direct_signalling	,
		"expect incoming calls from registrar ""only (default 1)"
	)

MODULE_PARM_DESC	(	sip_direct_media	,
		"Expect Media streams between signalling ""endpoints only (default 1)"
	)

Variable Documentation

unsigned int(* nf_nat_sdp_addr_hook)(struct sk_buff *skb, unsigned int protoff, unsigned int dataoff, const char **dptr, unsigned int *datalen, unsigned int sdpoff, enum sdp_header_types type, enum sdp_header_types term, const union nf_inet_addr *addr) __read_mostly

Definition at line 74 of file nf_conntrack_sip.c.

unsigned int(* nf_nat_sdp_media_hook)(struct sk_buff *skb, unsigned int protoff, unsigned int dataoff, const char **dptr, unsigned int *datalen, struct nf_conntrack_expect *rtp_exp, struct nf_conntrack_expect *rtcp_exp, unsigned int mediaoff, unsigned int medialen, union nf_inet_addr *rtp_addr) __read_mostly

Definition at line 104 of file nf_conntrack_sip.c.

unsigned int(* nf_nat_sdp_port_hook)(struct sk_buff *skb, unsigned int protoff, unsigned int dataoff, const char **dptr, unsigned int *datalen, unsigned int matchoff, unsigned int matchlen, u_int16_t port) __read_mostly

Definition at line 85 of file nf_conntrack_sip.c.

unsigned int(* nf_nat_sdp_session_hook)(struct sk_buff *skb, unsigned int protoff, unsigned int dataoff, const char **dptr, unsigned int *datalen, unsigned int sdpoff, const union nf_inet_addr *addr) __read_mostly

Definition at line 94 of file nf_conntrack_sip.c.

unsigned int(* nf_nat_sip_expect_hook)(struct sk_buff *skb, unsigned int protoff, unsigned int dataoff, const char **dptr, unsigned int *datalen, struct nf_conntrack_expect *exp, unsigned int matchoff, unsigned int matchlen) __read_mostly

Definition at line 64 of file nf_conntrack_sip.c.

unsigned int(* nf_nat_sip_hook)(struct sk_buff *skb, unsigned int protoff, unsigned int dataoff, const char **dptr, unsigned int *datalen) __read_mostly

Definition at line 55 of file nf_conntrack_sip.c.

void(* nf_nat_sip_seq_adjust_hook)(struct sk_buff *skb, unsigned int protoff, s16 off) __read_mostly

Definition at line 60 of file nf_conntrack_sip.c.