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
,
94 enum sdp_header_types
{
98 SDP_HDR_CONNECTION_IP4
,
100 SDP_HDR_CONNECTION_IP6
,
104 extern unsigned int (*nf_nat_sip_hook
)(struct sk_buff
*skb
,
105 unsigned int dataoff
,
107 unsigned int *datalen
);
108 extern void (*nf_nat_sip_seq_adjust_hook
)(struct sk_buff
*skb
, s16 off
);
109 extern unsigned int (*nf_nat_sip_expect_hook
)(struct sk_buff
*skb
,
110 unsigned int dataoff
,
112 unsigned int *datalen
,
113 struct nf_conntrack_expect
*exp
,
114 unsigned int matchoff
,
115 unsigned int matchlen
);
116 extern unsigned int (*nf_nat_sdp_addr_hook
)(struct sk_buff
*skb
,
117 unsigned int dataoff
,
119 unsigned int *datalen
,
121 enum sdp_header_types type
,
122 enum sdp_header_types term
,
123 const union nf_inet_addr
*addr
);
124 extern unsigned int (*nf_nat_sdp_port_hook
)(struct sk_buff
*skb
,
125 unsigned int dataoff
,
127 unsigned int *datalen
,
128 unsigned int matchoff
,
129 unsigned int matchlen
,
131 extern unsigned int (*nf_nat_sdp_session_hook
)(struct sk_buff
*skb
,
132 unsigned int dataoff
,
134 unsigned int *datalen
,
136 const union nf_inet_addr
*addr
);
137 extern unsigned int (*nf_nat_sdp_media_hook
)(struct sk_buff
*skb
,
138 unsigned int dataoff
,
140 unsigned int *datalen
,
141 struct nf_conntrack_expect
*rtp_exp
,
142 struct nf_conntrack_expect
*rtcp_exp
,
143 unsigned int mediaoff
,
144 unsigned int medialen
,
145 union nf_inet_addr
*rtp_addr
);
147 extern int ct_sip_parse_request(const struct nf_conn
*ct
,
148 const char *dptr
, unsigned int datalen
,
149 unsigned int *matchoff
, unsigned int *matchlen
,
150 union nf_inet_addr
*addr
, __be16
*port
);
151 extern int ct_sip_get_header(const struct nf_conn
*ct
, const char *dptr
,
152 unsigned int dataoff
, unsigned int datalen
,
153 enum sip_header_types type
,
154 unsigned int *matchoff
, unsigned int *matchlen
);
155 extern int ct_sip_parse_header_uri(const struct nf_conn
*ct
, const char *dptr
,
156 unsigned int *dataoff
, unsigned int datalen
,
157 enum sip_header_types type
, int *in_header
,
158 unsigned int *matchoff
, unsigned int *matchlen
,
159 union nf_inet_addr
*addr
, __be16
*port
);
160 extern int ct_sip_parse_address_param(const struct nf_conn
*ct
, const char *dptr
,
161 unsigned int dataoff
, unsigned int datalen
,
163 unsigned int *matchoff
, unsigned int *matchlen
,
164 union nf_inet_addr
*addr
);
165 extern int ct_sip_parse_numerical_param(const struct nf_conn
*ct
, const char *dptr
,
166 unsigned int off
, unsigned int datalen
,
168 unsigned int *matchoff
, unsigned int *matchen
,
171 extern int ct_sip_get_sdp_header(const struct nf_conn
*ct
, const char *dptr
,
172 unsigned int dataoff
, unsigned int datalen
,
173 enum sdp_header_types type
,
174 enum sdp_header_types term
,
175 unsigned int *matchoff
, unsigned int *matchlen
);
177 #endif /* __KERNEL__ */
178 #endif /* __NF_CONNTRACK_SIP_H__ */