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, unsigned int dataoff,
38 const char **dptr, unsigned int *datalen,
40 int (*response)(struct sk_buff *skb, unsigned int dataoff,
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,
103 unsigned int dataoff,
105 unsigned int *datalen);
106 extern unsigned int (*nf_nat_sip_expect_hook)(struct sk_buff *skb,
107 unsigned int dataoff,
109 unsigned int *datalen,
110 struct nf_conntrack_expect *exp,
111 unsigned int matchoff,
112 unsigned int matchlen);
113 extern unsigned int (*nf_nat_sdp_addr_hook)(struct sk_buff *skb,
114 unsigned int dataoff,
116 unsigned int *datalen,
118 enum sdp_header_types type,
119 enum sdp_header_types term,
120 const union nf_inet_addr *addr);
121 extern unsigned int (*nf_nat_sdp_port_hook)(struct sk_buff *skb,
122 unsigned int dataoff,
124 unsigned int *datalen,
125 unsigned int matchoff,
126 unsigned int matchlen,
128 extern unsigned int (*nf_nat_sdp_session_hook)(struct sk_buff *skb,
129 unsigned int dataoff,
131 unsigned int *datalen,
133 const union nf_inet_addr *addr);
134 extern unsigned int (*nf_nat_sdp_media_hook)(struct sk_buff *skb,
135 unsigned int dataoff,
137 unsigned int *datalen,
138 struct nf_conntrack_expect *rtp_exp,
139 struct nf_conntrack_expect *rtcp_exp,
140 unsigned int mediaoff,
141 unsigned int medialen,
142 union nf_inet_addr *rtp_addr);
144 extern int ct_sip_parse_request(const struct nf_conn *ct,
145 const char *dptr, unsigned int datalen,
146 unsigned int *matchoff, unsigned int *matchlen,
147 union nf_inet_addr *addr, __be16 *port);
148 extern int ct_sip_get_header(const struct nf_conn *ct, const char *dptr,
149 unsigned int dataoff, unsigned int datalen,
150 enum sip_header_types type,
151 unsigned int *matchoff, unsigned int *matchlen);
152 extern int ct_sip_parse_header_uri(const struct nf_conn *ct, const char *dptr,
153 unsigned int *dataoff, unsigned int datalen,
154 enum sip_header_types type, int *in_header,
155 unsigned int *matchoff, unsigned int *matchlen,
156 union nf_inet_addr *addr, __be16 *port);
157 extern int ct_sip_parse_address_param(const struct nf_conn *ct, const char *dptr,
158 unsigned int dataoff, unsigned int datalen,
160 unsigned int *matchoff, unsigned int *matchlen,
161 union nf_inet_addr *addr);
162 extern int ct_sip_parse_numerical_param(const struct nf_conn *ct, const char *dptr,
163 unsigned int off, unsigned int datalen,
165 unsigned int *matchoff, unsigned int *matchen,
168 extern int ct_sip_get_sdp_header(const struct nf_conn *ct, const char *dptr,
169 unsigned int dataoff, unsigned int datalen,
170 enum sdp_header_types type,
171 enum sdp_header_types term,
172 unsigned int *matchoff, unsigned int *matchlen);
174 #endif /* __KERNEL__ */
175 #endif /* __NF_CONNTRACK_SIP_H__ */