1 #ifndef __NF_CONNTRACK_SIP_H__
2 #define __NF_CONNTRACK_SIP_H__
6 #define SIP_TIMEOUT 3600
8 struct nf_ct_sip_master
{
9 unsigned int register_cseq
;
10 unsigned int invite_cseq
;
13 enum sip_expectation_classes
{
14 SIP_EXPECT_SIGNALLING
,
20 #define SIP_EXPECT_MAX (__SIP_EXPECT_MAX - 1)
22 struct sdp_media_type
{
25 enum sip_expectation_classes
class;
28 #define SDP_MEDIA_TYPE(__name, __class) \
31 .len = sizeof(__name) - 1, \
38 int (*request
)(struct sk_buff
*skb
, unsigned int dataoff
,
39 const char **dptr
, unsigned int *datalen
,
41 int (*response
)(struct sk_buff
*skb
, unsigned int dataoff
,
42 const char **dptr
, unsigned int *datalen
,
43 unsigned int cseq
, unsigned int code
);
46 #define SIP_HANDLER(__method, __request, __response) \
48 .method = (__method), \
49 .len = sizeof(__method) - 1, \
50 .request = (__request), \
51 .response = (__response), \
61 int (*match_len
)(const struct nf_conn
*ct
,
62 const char *dptr
, const char *limit
,
66 #define __SIP_HDR(__name, __cname, __search, __match) \
69 .len = sizeof(__name) - 1, \
71 .clen = (__cname) ? sizeof(__cname) - 1 : 0, \
72 .search = (__search), \
73 .slen = (__search) ? sizeof(__search) - 1 : 0, \
74 .match_len = (__match), \
77 #define SIP_HDR(__name, __cname, __search, __match) \
78 __SIP_HDR(__name, __cname, __search, __match)
80 #define SDP_HDR(__name, __search, __match) \
81 __SIP_HDR(__name, NULL, __search, __match)
83 enum sip_header_types
{
91 SIP_HDR_CONTENT_LENGTH
,
95 enum sdp_header_types
{
99 SDP_HDR_CONNECTION_IP4
,
101 SDP_HDR_CONNECTION_IP6
,
105 extern unsigned int (*nf_nat_sip_hook
)(struct sk_buff
*skb
,
106 unsigned int dataoff
,
108 unsigned int *datalen
);
109 extern void (*nf_nat_sip_seq_adjust_hook
)(struct sk_buff
*skb
, s16 off
);
110 extern unsigned int (*nf_nat_sip_expect_hook
)(struct sk_buff
*skb
,
111 unsigned int dataoff
,
113 unsigned int *datalen
,
114 struct nf_conntrack_expect
*exp
,
115 unsigned int matchoff
,
116 unsigned int matchlen
);
117 extern unsigned int (*nf_nat_sdp_addr_hook
)(struct sk_buff
*skb
,
118 unsigned int dataoff
,
120 unsigned int *datalen
,
122 enum sdp_header_types type
,
123 enum sdp_header_types term
,
124 const union nf_inet_addr
*addr
);
125 extern unsigned int (*nf_nat_sdp_port_hook
)(struct sk_buff
*skb
,
126 unsigned int dataoff
,
128 unsigned int *datalen
,
129 unsigned int matchoff
,
130 unsigned int matchlen
,
132 extern unsigned int (*nf_nat_sdp_session_hook
)(struct sk_buff
*skb
,
133 unsigned int dataoff
,
135 unsigned int *datalen
,
137 const union nf_inet_addr
*addr
);
138 extern unsigned int (*nf_nat_sdp_media_hook
)(struct sk_buff
*skb
,
139 unsigned int dataoff
,
141 unsigned int *datalen
,
142 struct nf_conntrack_expect
*rtp_exp
,
143 struct nf_conntrack_expect
*rtcp_exp
,
144 unsigned int mediaoff
,
145 unsigned int medialen
,
146 union nf_inet_addr
*rtp_addr
);
148 extern int ct_sip_parse_request(const struct nf_conn
*ct
,
149 const char *dptr
, unsigned int datalen
,
150 unsigned int *matchoff
, unsigned int *matchlen
,
151 union nf_inet_addr
*addr
, __be16
*port
);
152 extern int ct_sip_get_header(const struct nf_conn
*ct
, const char *dptr
,
153 unsigned int dataoff
, unsigned int datalen
,
154 enum sip_header_types type
,
155 unsigned int *matchoff
, unsigned int *matchlen
);
156 extern int ct_sip_parse_header_uri(const struct nf_conn
*ct
, const char *dptr
,
157 unsigned int *dataoff
, unsigned int datalen
,
158 enum sip_header_types type
, int *in_header
,
159 unsigned int *matchoff
, unsigned int *matchlen
,
160 union nf_inet_addr
*addr
, __be16
*port
);
161 extern int ct_sip_parse_address_param(const struct nf_conn
*ct
, const char *dptr
,
162 unsigned int dataoff
, unsigned int datalen
,
164 unsigned int *matchoff
, unsigned int *matchlen
,
165 union nf_inet_addr
*addr
);
166 extern int ct_sip_parse_numerical_param(const struct nf_conn
*ct
, const char *dptr
,
167 unsigned int off
, unsigned int datalen
,
169 unsigned int *matchoff
, unsigned int *matchen
,
172 extern int ct_sip_get_sdp_header(const struct nf_conn
*ct
, const char *dptr
,
173 unsigned int dataoff
, unsigned int datalen
,
174 enum sdp_header_types type
,
175 enum sdp_header_types term
,
176 unsigned int *matchoff
, unsigned int *matchlen
);
178 #endif /* __KERNEL__ */
179 #endif /* __NF_CONNTRACK_SIP_H__ */