include/linux/netfilter_ipv4/ip_conntrack_sip.h

   1 #ifndef __IP_CONNTRACK_SIP_H__
   2 #define __IP_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,
  18         POS_CONNECTION,
  19         POS_SDP_HEADER,
  20 };
  21
  22 extern unsigned int (*ip_nat_sip_hook)(struct sk_buff **pskb,
  23                                        enum ip_conntrack_info ctinfo,
  24                                        struct ip_conntrack *ct,
  25                                        const char **dptr);
  26 extern unsigned int (*ip_nat_sdp_hook)(struct sk_buff **pskb,
  27                                        enum ip_conntrack_info ctinfo,
  28                                        struct ip_conntrack_expect *exp,
  29                                        const char *dptr);
  30
  31 extern int ct_sip_get_info(const char *dptr, size_t dlen,
  32                            unsigned int *matchoff,
  33                            unsigned int *matchlen,
  34                            enum sip_header_pos pos);
  35 extern int ct_sip_lnlen(const char *line, const char *limit);
  36 extern const char *ct_sip_search(const char *needle, const char *haystack,
  37                                  size_t needle_len, size_t haystack_len,
  38                                  int case_sensitive);
  39 #endif /* __KERNEL__ */
  40 #endif /* __IP_CONNTRACK_SIP_H__ */