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;
12 enum sip_expectation_classes {
13 SIP_EXPECT_SIGNALLING,
17 #define SIP_EXPECT_MAX (__SIP_EXPECT_MAX - 1)
22 int (*request)(struct sk_buff *skb,
23 const char **dptr, unsigned int *datalen,
25 int (*response)(struct sk_buff *skb,
26 const char **dptr, unsigned int *datalen,
27 unsigned int cseq, unsigned int code);
30 #define SIP_HANDLER(__method, __request, __response) \
32 .method = (__method), \
33 .len = sizeof(__method) - 1, \
34 .request = (__request), \
35 .response = (__response), \
45 int (*match_len)(const struct nf_conn *ct,
46 const char *dptr, const char *limit,
50 #define __SIP_HDR(__name, __cname, __search, __match) \
53 .len = sizeof(__name) - 1, \
55 .clen = (__cname) ? sizeof(__cname) - 1 : 0, \
56 .search = (__search), \
57 .slen = (__search) ? sizeof(__search) - 1 : 0, \
58 .match_len = (__match), \
61 #define SIP_HDR(__name, __cname, __search, __match) \
62 __SIP_HDR(__name, __cname, __search, __match)
64 #define SDP_HDR(__name, __search, __match) \
65 __SIP_HDR(__name, NULL, __search, __match)
67 enum sip_header_types {
74 SIP_HDR_CONTENT_LENGTH,
77 enum sdp_header_types {
81 SDP_HDR_CONNECTION_IP4,
83 SDP_HDR_CONNECTION_IP6,
87 extern unsigned int (*nf_nat_sip_hook)(struct sk_buff *skb,
89 unsigned int *datalen);
90 extern unsigned int (*nf_nat_sip_expect_hook)(struct sk_buff *skb,
92 unsigned int *datalen,
93 struct nf_conntrack_expect *exp,
94 unsigned int matchoff,
95 unsigned int matchlen);
96 extern unsigned int (*nf_nat_sdp_addr_hook)(struct sk_buff *skb,
99 unsigned int *datalen,
100 enum sdp_header_types type,
101 enum sdp_header_types term,
102 const union nf_inet_addr *addr);
103 extern unsigned int (*nf_nat_sdp_session_hook)(struct sk_buff *skb,
105 unsigned int dataoff,
106 unsigned int *datalen,
107 const union nf_inet_addr *addr);
108 extern unsigned int (*nf_nat_sdp_media_hook)(struct sk_buff *skb,
110 unsigned int *datalen,
111 struct nf_conntrack_expect *rtp_exp,
112 struct nf_conntrack_expect *rtcp_exp,
113 unsigned int mediaoff,
114 unsigned int medialen,
115 union nf_inet_addr *rtp_addr);
117 extern int ct_sip_parse_request(const struct nf_conn *ct,
118 const char *dptr, unsigned int datalen,
119 unsigned int *matchoff, unsigned int *matchlen,
120 union nf_inet_addr *addr, __be16 *port);
121 extern int ct_sip_get_header(const struct nf_conn *ct, const char *dptr,
122 unsigned int dataoff, unsigned int datalen,
123 enum sip_header_types type,
124 unsigned int *matchoff, unsigned int *matchlen);
125 extern int ct_sip_parse_header_uri(const struct nf_conn *ct, const char *dptr,
126 unsigned int *dataoff, unsigned int datalen,
127 enum sip_header_types type, int *in_header,
128 unsigned int *matchoff, unsigned int *matchlen,
129 union nf_inet_addr *addr, __be16 *port);
130 extern int ct_sip_parse_address_param(const struct nf_conn *ct, const char *dptr,
131 unsigned int dataoff, unsigned int datalen,
133 unsigned int *matchoff, unsigned int *matchlen,
134 union nf_inet_addr *addr);
135 extern int ct_sip_parse_numerical_param(const struct nf_conn *ct, const char *dptr,
136 unsigned int off, unsigned int datalen,
138 unsigned int *matchoff, unsigned int *matchen,
141 extern int ct_sip_get_sdp_header(const struct nf_conn *ct, const char *dptr,
142 unsigned int dataoff, unsigned int datalen,
143 enum sdp_header_types type,
144 enum sdp_header_types term,
145 unsigned int *matchoff, unsigned int *matchlen);
147 #endif /* __KERNEL__ */
148 #endif /* __NF_CONNTRACK_SIP_H__ */