[net-next-2.6.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;
};

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

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_hook)(struct sk_buff *skb,
				       const char **dptr,
				       unsigned int *datalen,
				       struct nf_conntrack_expect *rtp_exp,
				       struct nf_conntrack_expect *rtcp_exp);

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 {
	9	unsigned int register_cseq;
	10	};
	11
	12	enum sip_expectation_classes {
	13	SIP_EXPECT_SIGNALLING,
	14	SIP_EXPECT_AUDIO,
	15	__SIP_EXPECT_MAX
	16	};
	17	#define SIP_EXPECT_MAX (__SIP_EXPECT_MAX - 1)
	18
30f33e6d PM	19	struct sip_handler {
	20	const char *method;
	21	unsigned int len;
	22	int (request)(struct sk_buff skb,
	23	const char *dptr, unsigned int datalen,
	24	unsigned int cseq);
	25	int (response)(struct sk_buff skb,
	26	const char *dptr, unsigned int datalen,
	27	unsigned int cseq, unsigned int code);
	28	};
	29
	30	#define SIP_HANDLER(__method, __request, __response) \
	31	{ \
	32	.method = (__method), \
	33	.len = sizeof(__method) - 1, \
	34	.request = (__request), \
	35	.response = (__response), \
	36	}
	37
3e9b4600 PM	38	struct sip_header {
	39	const char *name;
	40	const char *cname;
	41	const char *search;
	42	unsigned int len;
	43	unsigned int clen;
	44	unsigned int slen;
	45	int (match_len)(const struct nf_conn ct,
	46	const char dptr, const char limit,
	47	int *shift);
	48	};
	49
	50	#define __SIP_HDR(__name, __cname, __search, __match) \
	51	{ \
	52	.name = (__name), \
	53	.len = sizeof(__name) - 1, \
	54	.cname = (__cname), \
	55	.clen = (__cname) ? sizeof(__cname) - 1 : 0, \
	56	.search = (__search), \
	57	.slen = (__search) ? sizeof(__search) - 1 : 0, \
	58	.match_len = (__match), \
	59	}
	60
ea45f12a PM	61	#define SIP_HDR(__name, __cname, __search, __match) \
	62	__SIP_HDR(__name, __cname, __search, __match)
	63
3e9b4600 PM	64	#define SDP_HDR(__name, __search, __match) \
	65	__SIP_HDR(__name, NULL, __search, __match)
	66
ea45f12a	67	enum sip_header_types {
30f33e6d	68	SIP_HDR_CSEQ,
ea45f12a PM	69	SIP_HDR_FROM,
	70	SIP_HDR_TO,
	71	SIP_HDR_CONTACT,
	72	SIP_HDR_VIA,
0f32a40f	73	SIP_HDR_EXPIRES,
ea45f12a PM	74	SIP_HDR_CONTENT_LENGTH,
	75	};
	76
3e9b4600 PM	77	enum sdp_header_types {
	78	SDP_HDR_UNSPEC,
	79	SDP_HDR_VERSION,
	80	SDP_HDR_OWNER_IP4,
	81	SDP_HDR_CONNECTION_IP4,
	82	SDP_HDR_OWNER_IP6,
	83	SDP_HDR_CONNECTION_IP6,
	84	SDP_HDR_MEDIA,
9fafcd7b PM	85	};
9fafcd7b PM	86
3db05fea	87	extern unsigned int (nf_nat_sip_hook)(struct sk_buff skb,
2a6cfb22 PM	88	const char **dptr,
2a6cfb22 PM	89	unsigned int *datalen);
0f32a40f PM	90	extern unsigned int (nf_nat_sip_expect_hook)(struct sk_buff skb,
	91	const char **dptr,
	92	unsigned int *datalen,
	93	struct nf_conntrack_expect *exp,
	94	unsigned int matchoff,
	95	unsigned int matchlen);
3db05fea	96	extern unsigned int (nf_nat_sdp_hook)(struct sk_buff skb,
2a6cfb22	97	const char **dptr,
212440a7	98	unsigned int *datalen,
a9c1d359 PM	99	struct nf_conntrack_expect *rtp_exp,
a9c1d359 PM	100	struct nf_conntrack_expect *rtcp_exp);
9fafcd7b	101
ac367740 PM	102	extern int ct_sip_parse_request(const struct nf_conn *ct,
ac367740 PM	103	const char *dptr, unsigned int datalen,
624f8b7b PM	104	unsigned int matchoff, unsigned int matchlen,
624f8b7b PM	105	union nf_inet_addr addr, __be16 port);
ea45f12a PM	106	extern int ct_sip_get_header(const struct nf_conn ct, const char dptr,
	107	unsigned int dataoff, unsigned int datalen,
	108	enum sip_header_types type,
	109	unsigned int matchoff, unsigned int matchlen);
05e3ced2 PM	110	extern int ct_sip_parse_header_uri(const struct nf_conn ct, const char dptr,
	111	unsigned int *dataoff, unsigned int datalen,
	112	enum sip_header_types type, int *in_header,
	113	unsigned int matchoff, unsigned int matchlen,
	114	union nf_inet_addr addr, __be16 port);
2bbb2116 PM	115	extern int ct_sip_parse_address_param(const struct nf_conn ct, const char dptr,
	116	unsigned int dataoff, unsigned int datalen,
	117	const char *name,
	118	unsigned int matchoff, unsigned int matchlen,
	119	union nf_inet_addr *addr);
	120	extern int ct_sip_parse_numerical_param(const struct nf_conn ct, const char dptr,
	121	unsigned int off, unsigned int datalen,
	122	const char *name,
	123	unsigned int matchoff, unsigned int matchen,
	124	unsigned int *val);
3e9b4600 PM	125
	126	extern int ct_sip_get_sdp_header(const struct nf_conn ct, const char dptr,
	127	unsigned int dataoff, unsigned int datalen,
	128	enum sdp_header_types type,
	129	enum sdp_header_types term,
	130	unsigned int matchoff, unsigned int matchlen);
	131
9fafcd7b PM	132	#endif /* __KERNEL__ */
9fafcd7b PM	133	#endif /* __NF_CONNTRACK_SIP_H__ */