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,
19 #define SIP_EXPECT_MAX (__SIP_EXPECT_MAX - 1)
21 struct sdp_media_type {
24 enum sip_expectation_classes class;
27 #define SDP_MEDIA_TYPE(__name, __class) \
30 .len = sizeof(__name) - 1, \
37 int (*request)(struct sk_buff *skb,
38 const char **dptr, unsigned int *datalen,
40 int (*response)(struct sk_buff *skb,
41 const char **dptr, unsigned int *datalen,
42 unsigned int cseq, unsigned int code);
45 #define SIP_HANDLER(__method, __request, __response) \
47 .method = (__method), \
48 .len = sizeof(__method) - 1, \
49 .request = (__request), \
50 .response = (__response), \
60 int (*match_len)(const struct nf_conn *ct,
61 const char *dptr, const char *limit,
65 #define __SIP_HDR(__name, __cname, __search, __match) \
68 .len = sizeof(__name) - 1, \
70 .clen = (__cname) ? sizeof(__cname) - 1 : 0, \
71 .search = (__search), \
72 .slen = (__search) ? sizeof(__search) - 1 : 0, \
73 .match_len = (__match), \
76 #define SIP_HDR(__name, __cname, __search, __match) \
77 __SIP_HDR(__name, __cname, __search, __match)
79 #define SDP_HDR(__name, __search, __match) \
80 __SIP_HDR(__name, NULL, __search, __match)
82 enum sip_header_types {
89 SIP_HDR_CONTENT_LENGTH,
92 enum sdp_header_types {
96 SDP_HDR_CONNECTION_IP4,
98 SDP_HDR_CONNECTION_IP6,
102 extern unsigned int (*nf_nat_sip_hook)(struct sk_buff *skb,
104 unsigned int *datalen);
105 extern unsigned int (*nf_nat_sip_expect_hook)(struct sk_buff *skb,
107 unsigned int *datalen,
108 struct nf_conntrack_expect *exp,
109 unsigned int matchoff,
110 unsigned int matchlen);
111 extern unsigned int (*nf_nat_sdp_addr_hook)(struct sk_buff *skb,
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);
118 extern unsigned int (*nf_nat_sdp_port_hook)(struct sk_buff *skb,
120 unsigned int *datalen,
121 unsigned int matchoff,
122 unsigned int matchlen,
124 extern unsigned int (*nf_nat_sdp_session_hook)(struct sk_buff *skb,
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,
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);
138 extern int ct_sip_parse_request(const struct nf_conn *ct,
139 const char *dptr, unsigned int datalen,
140 unsigned int *matchoff, unsigned int *matchlen,
141 union nf_inet_addr *addr, __be16 *port);
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);
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);
151 extern int ct_sip_parse_address_param(const struct nf_conn *ct, const char *dptr,
152 unsigned int dataoff, unsigned int datalen,
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,
159 unsigned int *matchoff, unsigned int *matchen,
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);
168 #endif /* __KERNEL__ */
169 #endif /* __NF_CONNTRACK_SIP_H__ */