1 #ifndef __NF_CONNTRACK_SIP_H__
2 #define __NF_CONNTRACK_SIP_H__
5 #include <net/netfilter/nf_conntrack_expect.h>
7 #include <linux/types.h>
10 #define SIP_TIMEOUT 3600
12 struct nf_ct_sip_master
{
13 unsigned int register_cseq
;
14 unsigned int invite_cseq
;
18 enum sip_expectation_classes
{
19 SIP_EXPECT_SIGNALLING
,
25 #define SIP_EXPECT_MAX (__SIP_EXPECT_MAX - 1)
27 struct sdp_media_type
{
30 enum sip_expectation_classes
class;
33 #define SDP_MEDIA_TYPE(__name, __class) \
36 .len = sizeof(__name) - 1, \
43 int (*request
)(struct sk_buff
*skb
, unsigned int protoff
,
45 const char **dptr
, unsigned int *datalen
,
47 int (*response
)(struct sk_buff
*skb
, unsigned int protoff
,
49 const char **dptr
, unsigned int *datalen
,
50 unsigned int cseq
, unsigned int code
);
53 #define SIP_HANDLER(__method, __request, __response) \
55 .method = (__method), \
56 .len = sizeof(__method) - 1, \
57 .request = (__request), \
58 .response = (__response), \
68 int (*match_len
)(const struct nf_conn
*ct
,
69 const char *dptr
, const char *limit
,
73 #define __SIP_HDR(__name, __cname, __search, __match) \
76 .len = sizeof(__name) - 1, \
78 .clen = (__cname) ? sizeof(__cname) - 1 : 0, \
79 .search = (__search), \
80 .slen = (__search) ? sizeof(__search) - 1 : 0, \
81 .match_len = (__match), \
84 #define SIP_HDR(__name, __cname, __search, __match) \
85 __SIP_HDR(__name, __cname, __search, __match)
87 #define SDP_HDR(__name, __search, __match) \
88 __SIP_HDR(__name, NULL, __search, __match)
90 enum sip_header_types
{
98 SIP_HDR_CONTENT_LENGTH
,
102 enum sdp_header_types
{
110 extern unsigned int (*nf_nat_sip_hook
)(struct sk_buff
*skb
,
111 unsigned int protoff
,
112 unsigned int dataoff
,
114 unsigned int *datalen
);
115 extern void (*nf_nat_sip_seq_adjust_hook
)(struct sk_buff
*skb
,
116 unsigned int protoff
, s16 off
);
117 extern unsigned int (*nf_nat_sip_expect_hook
)(struct sk_buff
*skb
,
118 unsigned int protoff
,
119 unsigned int dataoff
,
121 unsigned int *datalen
,
122 struct nf_conntrack_expect
*exp
,
123 unsigned int matchoff
,
124 unsigned int matchlen
);
125 extern unsigned int (*nf_nat_sdp_addr_hook
)(struct sk_buff
*skb
,
126 unsigned int protoff
,
127 unsigned int dataoff
,
129 unsigned int *datalen
,
131 enum sdp_header_types type
,
132 enum sdp_header_types term
,
133 const union nf_inet_addr
*addr
);
134 extern unsigned int (*nf_nat_sdp_port_hook
)(struct sk_buff
*skb
,
135 unsigned int protoff
,
136 unsigned int dataoff
,
138 unsigned int *datalen
,
139 unsigned int matchoff
,
140 unsigned int matchlen
,
142 extern unsigned int (*nf_nat_sdp_session_hook
)(struct sk_buff
*skb
,
143 unsigned int protoff
,
144 unsigned int dataoff
,
146 unsigned int *datalen
,
148 const union nf_inet_addr
*addr
);
149 extern unsigned int (*nf_nat_sdp_media_hook
)(struct sk_buff
*skb
,
150 unsigned int protoff
,
151 unsigned int dataoff
,
153 unsigned int *datalen
,
154 struct nf_conntrack_expect
*rtp_exp
,
155 struct nf_conntrack_expect
*rtcp_exp
,
156 unsigned int mediaoff
,
157 unsigned int medialen
,
158 union nf_inet_addr
*rtp_addr
);
160 extern int ct_sip_parse_request(const struct nf_conn
*ct
,
161 const char *dptr
, unsigned int datalen
,
162 unsigned int *matchoff
, unsigned int *matchlen
,
163 union nf_inet_addr
*addr
, __be16
*port
);
164 extern int ct_sip_get_header(const struct nf_conn
*ct
, const char *dptr
,
165 unsigned int dataoff
, unsigned int datalen
,
166 enum sip_header_types type
,
167 unsigned int *matchoff
, unsigned int *matchlen
);
168 extern int ct_sip_parse_header_uri(const struct nf_conn
*ct
, const char *dptr
,
169 unsigned int *dataoff
, unsigned int datalen
,
170 enum sip_header_types type
, int *in_header
,
171 unsigned int *matchoff
, unsigned int *matchlen
,
172 union nf_inet_addr
*addr
, __be16
*port
);
173 extern int ct_sip_parse_address_param(const struct nf_conn
*ct
, const char *dptr
,
174 unsigned int dataoff
, unsigned int datalen
,
176 unsigned int *matchoff
, unsigned int *matchlen
,
177 union nf_inet_addr
*addr
, bool delim
);
178 extern int ct_sip_parse_numerical_param(const struct nf_conn
*ct
, const char *dptr
,
179 unsigned int off
, unsigned int datalen
,
181 unsigned int *matchoff
, unsigned int *matchen
,
184 extern int ct_sip_get_sdp_header(const struct nf_conn
*ct
, const char *dptr
,
185 unsigned int dataoff
, unsigned int datalen
,
186 enum sdp_header_types type
,
187 enum sdp_header_types term
,
188 unsigned int *matchoff
, unsigned int *matchlen
);
190 #endif /* __KERNEL__ */
191 #endif /* __NF_CONNTRACK_SIP_H__ */