include/linux/netfilter/nf_conntrack_sip.h

   1 #ifndef __NF_CONNTRACK_SIP_H__
   2 #define __NF_CONNTRACK_SIP_H__
   3 #ifdef __KERNEL__
   4
   5 #define SIP_PORT        5060
   6 #define SIP_TIMEOUT     3600
   7
   8 enum sip_header_pos {
   9         POS_REG_REQ_URI,
  10         POS_REQ_URI,
  11         POS_FROM,
  12         POS_TO,
  13         POS_VIA,
  14         POS_CONTACT,
  15         POS_CONTENT,
  16         POS_MEDIA,
  17         POS_OWNER_IP4,
  18         POS_CONNECTION_IP4,
  19         POS_OWNER_IP6,
  20         POS_CONNECTION_IP6,
  21         POS_SDP_HEADER,
  22 };
  23
  24 extern unsigned int (*nf_nat_sip_hook)(struct sk_buff *skb,
  25                                        enum ip_conntrack_info ctinfo,
  26                                        struct nf_conn *ct,
  27                                        const char **dptr);
  28 extern unsigned int (*nf_nat_sdp_hook)(struct sk_buff *skb,
  29                                        enum ip_conntrack_info ctinfo,
  30                                        struct nf_conntrack_expect *exp,
  31                                        const char *dptr);
  32
  33 extern int ct_sip_get_info(const struct nf_conn *ct, const char *dptr,
  34                            size_t dlen, unsigned int *matchoff,
  35                            unsigned int *matchlen, enum sip_header_pos pos);
  36 extern int ct_sip_lnlen(const char *line, const char *limit);
  37 extern const char *ct_sip_search(const char *needle, const char *haystack,
  38                                  size_t needle_len, size_t haystack_len,
  39                                  int case_sensitive);
  40 #endif /* __KERNEL__ */
  41 #endif /* __NF_CONNTRACK_SIP_H__ */