[deliverable/linux.git] / include / linux / netfilter / nf_conntrack_sip.h

#ifndef __NF_CONNTRACK_SIP_H__
#define __NF_CONNTRACK_SIP_H__
#ifdef __KERNEL__

#define SIP_PORT	5060
#define SIP_TIMEOUT	3600

struct nf_ct_sip_master {
	unsigned int	register_cseq;
	unsigned int	invite_cseq;
};

enum sip_expectation_classes {
	SIP_EXPECT_SIGNALLING,
	SIP_EXPECT_AUDIO,
	SIP_EXPECT_VIDEO,
	__SIP_EXPECT_MAX
};
#define SIP_EXPECT_MAX	(__SIP_EXPECT_MAX - 1)

struct sdp_media_type {
	const char			*name;
	unsigned int			len;
	enum sip_expectation_classes	class;
};

#define SDP_MEDIA_TYPE(__name, __class)					\
{									\
	.name	= (__name),						\
	.len	= sizeof(__name) - 1,					\
	.class	= (__class),						\
}

struct sip_handler {
	const char	*method;
	unsigned int	len;
	int		(*request)(struct sk_buff *skb,
				   const char **dptr, unsigned int *datalen,
				   unsigned int cseq);
	int		(*response)(struct sk_buff *skb,
				    const char **dptr, unsigned int *datalen,
				    unsigned int cseq, unsigned int code);
};

#define SIP_HANDLER(__method, __request, __response)			\
{									\
	.method		= (__method),					\
	.len		= sizeof(__method) - 1,				\
	.request	= (__request),					\
	.response	= (__response),					\
}

struct sip_header {
	const char	*name;
	const char	*cname;
	const char	*search;
	unsigned int	len;
	unsigned int	clen;
	unsigned int	slen;
	int		(*match_len)(const struct nf_conn *ct,
				     const char *dptr, const char *limit,
				     int *shift);
};

#define __SIP_HDR(__name, __cname, __search, __match)			\
{									\
	.name		= (__name),					\
	.len		= sizeof(__name) - 1,				\
	.cname		= (__cname),					\
	.clen		= (__cname) ? sizeof(__cname) - 1 : 0,		\
	.search		= (__search),					\
	.slen		= (__search) ? sizeof(__search) - 1 : 0,	\
	.match_len	= (__match),					\
}

#define SIP_HDR(__name, __cname, __search, __match) \
	__SIP_HDR(__name, __cname, __search, __match)

#define SDP_HDR(__name, __search, __match) \
	__SIP_HDR(__name, NULL, __search, __match)

enum sip_header_types {
	SIP_HDR_CSEQ,
	SIP_HDR_FROM,
	SIP_HDR_TO,
	SIP_HDR_CONTACT,
	SIP_HDR_VIA,
	SIP_HDR_EXPIRES,
	SIP_HDR_CONTENT_LENGTH,
};

enum sdp_header_types {
	SDP_HDR_UNSPEC,
	SDP_HDR_VERSION,
	SDP_HDR_OWNER_IP4,
	SDP_HDR_CONNECTION_IP4,
	SDP_HDR_OWNER_IP6,
	SDP_HDR_CONNECTION_IP6,
	SDP_HDR_MEDIA,
};

extern unsigned int (*nf_nat_sip_hook)(struct sk_buff *skb,
				       const char **dptr,
				       unsigned int *datalen);
extern unsigned int (*nf_nat_sip_expect_hook)(struct sk_buff *skb,
					      const char **dptr,
					      unsigned int *datalen,
					      struct nf_conntrack_expect *exp,
					      unsigned int matchoff,
					      unsigned int matchlen);
extern unsigned int (*nf_nat_sdp_addr_hook)(struct sk_buff *skb,
					    const char **dptr,
					    unsigned int dataoff,
					    unsigned int *datalen,
					    enum sdp_header_types type,
					    enum sdp_header_types term,
					    const union nf_inet_addr *addr);
extern unsigned int (*nf_nat_sdp_port_hook)(struct sk_buff *skb,
					    const char **dptr,
					    unsigned int *datalen,
					    unsigned int matchoff,
					    unsigned int matchlen,
					    u_int16_t port);
extern unsigned int (*nf_nat_sdp_session_hook)(struct sk_buff *skb,
					       const char **dptr,
					       unsigned int dataoff,
					       unsigned int *datalen,
					       const union nf_inet_addr *addr);
extern unsigned int (*nf_nat_sdp_media_hook)(struct sk_buff *skb,
					     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);

extern 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);
extern 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);
extern 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);
extern 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);
extern int ct_sip_parse_numerical_param(const struct nf_conn *ct, const char *dptr,
					unsigned int off, unsigned int datalen,
					const char *name,
					unsigned int *matchoff, unsigned int *matchen,
					unsigned int *val);

extern 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);

#endif /* __KERNEL__ */
#endif /* __NF_CONNTRACK_SIP_H__ */
Commit	Line	Data
9fafcd7b PM	1	#ifndef __NF_CONNTRACK_SIP_H__
	2	#define __NF_CONNTRACK_SIP_H__
	3	#ifdef __KERNEL__
	4
	5	#define SIP_PORT 5060
	6	#define SIP_TIMEOUT 3600
	7
0f32a40f PM	8	struct nf_ct_sip_master {
0f32a40f PM	9	unsigned int register_cseq;
ef75d49f	10	unsigned int invite_cseq;
0f32a40f PM	11	};
	12
	13	enum sip_expectation_classes {
	14	SIP_EXPECT_SIGNALLING,
	15	SIP_EXPECT_AUDIO,
0d0ab037	16	SIP_EXPECT_VIDEO,
0f32a40f PM	17	__SIP_EXPECT_MAX
	18	};
	19	#define SIP_EXPECT_MAX (__SIP_EXPECT_MAX - 1)
	20
0d0ab037 PM	21	struct sdp_media_type {
	22	const char *name;
	23	unsigned int len;
	24	enum sip_expectation_classes class;
	25	};
	26
	27	#define SDP_MEDIA_TYPE(__name, __class) \
	28	{ \
	29	.name = (__name), \
	30	.len = sizeof(__name) - 1, \
	31	.class = (__class), \
	32	}
	33
30f33e6d PM	34	struct sip_handler {
	35	const char *method;
	36	unsigned int len;
	37	int (request)(struct sk_buff skb,
	38	const char *dptr, unsigned int datalen,
	39	unsigned int cseq);
	40	int (response)(struct sk_buff skb,
	41	const char *dptr, unsigned int datalen,
	42	unsigned int cseq, unsigned int code);
	43	};
	44
	45	#define SIP_HANDLER(__method, __request, __response) \
	46	{ \
	47	.method = (__method), \
	48	.len = sizeof(__method) - 1, \
	49	.request = (__request), \
	50	.response = (__response), \
	51	}
	52
3e9b4600 PM	53	struct sip_header {
	54	const char *name;
	55	const char *cname;
	56	const char *search;
	57	unsigned int len;
	58	unsigned int clen;
	59	unsigned int slen;
	60	int (match_len)(const struct nf_conn ct,
	61	const char dptr, const char limit,
	62	int *shift);
	63	};
	64
	65	#define __SIP_HDR(__name, __cname, __search, __match) \
	66	{ \
	67	.name = (__name), \
	68	.len = sizeof(__name) - 1, \
	69	.cname = (__cname), \
	70	.clen = (__cname) ? sizeof(__cname) - 1 : 0, \
	71	.search = (__search), \
	72	.slen = (__search) ? sizeof(__search) - 1 : 0, \
	73	.match_len = (__match), \
	74	}
	75
ea45f12a PM	76	#define SIP_HDR(__name, __cname, __search, __match) \
	77	__SIP_HDR(__name, __cname, __search, __match)
	78
3e9b4600 PM	79	#define SDP_HDR(__name, __search, __match) \
	80	__SIP_HDR(__name, NULL, __search, __match)
	81
ea45f12a	82	enum sip_header_types {
30f33e6d	83	SIP_HDR_CSEQ,
ea45f12a PM	84	SIP_HDR_FROM,
	85	SIP_HDR_TO,
	86	SIP_HDR_CONTACT,
	87	SIP_HDR_VIA,
0f32a40f	88	SIP_HDR_EXPIRES,
ea45f12a PM	89	SIP_HDR_CONTENT_LENGTH,
	90	};
	91
3e9b4600 PM	92	enum sdp_header_types {
	93	SDP_HDR_UNSPEC,
	94	SDP_HDR_VERSION,
	95	SDP_HDR_OWNER_IP4,
	96	SDP_HDR_CONNECTION_IP4,
	97	SDP_HDR_OWNER_IP6,
	98	SDP_HDR_CONNECTION_IP6,
	99	SDP_HDR_MEDIA,
9fafcd7b PM	100	};
9fafcd7b PM	101
3db05fea	102	extern unsigned int (nf_nat_sip_hook)(struct sk_buff skb,
2a6cfb22 PM	103	const char **dptr,
2a6cfb22 PM	104	unsigned int *datalen);
0f32a40f PM	105	extern unsigned int (nf_nat_sip_expect_hook)(struct sk_buff skb,
	106	const char **dptr,
	107	unsigned int *datalen,
	108	struct nf_conntrack_expect *exp,
	109	unsigned int matchoff,
	110	unsigned int matchlen);
4ab9e64e PM	111	extern unsigned int (nf_nat_sdp_addr_hook)(struct sk_buff skb,
	112	const char **dptr,
	113	unsigned int dataoff,
	114	unsigned int *datalen,
	115	enum sdp_header_types type,
	116	enum sdp_header_types term,
	117	const union nf_inet_addr *addr);
c7f485ab PM	118	extern unsigned int (nf_nat_sdp_port_hook)(struct sk_buff skb,
	119	const char **dptr,
	120	unsigned int *datalen,
	121	unsigned int matchoff,
	122	unsigned int matchlen,
	123	u_int16_t port);
4ab9e64e PM	124	extern unsigned int (nf_nat_sdp_session_hook)(struct sk_buff skb,
	125	const char **dptr,
	126	unsigned int dataoff,
	127	unsigned int *datalen,
	128	const union nf_inet_addr *addr);
	129	extern unsigned int (nf_nat_sdp_media_hook)(struct sk_buff skb,
	130	const char **dptr,
	131	unsigned int *datalen,
	132	struct nf_conntrack_expect *rtp_exp,
	133	struct nf_conntrack_expect *rtcp_exp,
	134	unsigned int mediaoff,
	135	unsigned int medialen,
	136	union nf_inet_addr *rtp_addr);
9fafcd7b	137
ac367740 PM	138	extern int ct_sip_parse_request(const struct nf_conn *ct,
ac367740 PM	139	const char *dptr, unsigned int datalen,
624f8b7b PM	140	unsigned int matchoff, unsigned int matchlen,
624f8b7b PM	141	union nf_inet_addr addr, __be16 port);
ea45f12a PM	142	extern int ct_sip_get_header(const struct nf_conn ct, const char dptr,
	143	unsigned int dataoff, unsigned int datalen,
	144	enum sip_header_types type,
	145	unsigned int matchoff, unsigned int matchlen);
05e3ced2 PM	146	extern int ct_sip_parse_header_uri(const struct nf_conn ct, const char dptr,
	147	unsigned int *dataoff, unsigned int datalen,
	148	enum sip_header_types type, int *in_header,
	149	unsigned int matchoff, unsigned int matchlen,
	150	union nf_inet_addr addr, __be16 port);
2bbb2116 PM	151	extern int ct_sip_parse_address_param(const struct nf_conn ct, const char dptr,
	152	unsigned int dataoff, unsigned int datalen,
	153	const char *name,
	154	unsigned int matchoff, unsigned int matchlen,
	155	union nf_inet_addr *addr);
	156	extern int ct_sip_parse_numerical_param(const struct nf_conn ct, const char dptr,
	157	unsigned int off, unsigned int datalen,
	158	const char *name,
	159	unsigned int matchoff, unsigned int matchen,
	160	unsigned int *val);
3e9b4600 PM	161
	162	extern int ct_sip_get_sdp_header(const struct nf_conn ct, const char dptr,
	163	unsigned int dataoff, unsigned int datalen,
	164	enum sdp_header_types type,
	165	enum sdp_header_types term,
	166	unsigned int matchoff, unsigned int matchlen);
	167
9fafcd7b PM	168	#endif /* __KERNEL__ */
9fafcd7b PM	169	#endif /* __NF_CONNTRACK_SIP_H__ */