From 9fafcd7b203229c3f3893a475741afc27e276306 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Sat, 2 Dec 2006 22:09:57 -0800 Subject: [NETFILTER]: nf_conntrack/nf_nat: add SIP helper port Add IPv4 and IPv6 capable nf_conntrack port of the SIP conntrack/NAT helper. Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- include/linux/netfilter/nf_conntrack_sip.h | 41 ++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 include/linux/netfilter/nf_conntrack_sip.h (limited to 'include') diff --git a/include/linux/netfilter/nf_conntrack_sip.h b/include/linux/netfilter/nf_conntrack_sip.h new file mode 100644 index 00000000000..bb7f2041db7 --- /dev/null +++ b/include/linux/netfilter/nf_conntrack_sip.h @@ -0,0 +1,41 @@ +#ifndef __NF_CONNTRACK_SIP_H__ +#define __NF_CONNTRACK_SIP_H__ +#ifdef __KERNEL__ + +#define SIP_PORT 5060 +#define SIP_TIMEOUT 3600 + +enum sip_header_pos { + POS_REG_REQ_URI, + POS_REQ_URI, + POS_FROM, + POS_TO, + POS_VIA, + POS_CONTACT, + POS_CONTENT, + POS_MEDIA, + POS_OWNER_IP4, + POS_CONNECTION_IP4, + POS_OWNER_IP6, + POS_CONNECTION_IP6, + POS_SDP_HEADER, +}; + +extern unsigned int (*nf_nat_sip_hook)(struct sk_buff **pskb, + enum ip_conntrack_info ctinfo, + struct nf_conn *ct, + const char **dptr); +extern unsigned int (*nf_nat_sdp_hook)(struct sk_buff **pskb, + enum ip_conntrack_info ctinfo, + struct nf_conntrack_expect *exp, + const char *dptr); + +extern int ct_sip_get_info(struct nf_conn *ct, const char *dptr, size_t dlen, + unsigned int *matchoff, unsigned int *matchlen, + enum sip_header_pos pos); +extern int ct_sip_lnlen(const char *line, const char *limit); +extern const char *ct_sip_search(const char *needle, const char *haystack, + size_t needle_len, size_t haystack_len, + int case_sensitive); +#endif /* __KERNEL__ */ +#endif /* __NF_CONNTRACK_SIP_H__ */ -- cgit v1.2.3-18-g5258