[NETFILTER]: nf_conntrack_sip: introduce URI and header parameter parsing helpers

Introduce URI and header parameter parsing helpers. These are needed
by the conntrack helper to parse expiration values in Contact: header
parameters and by the NAT helper to properly update the Via-header
rport=, received= and maddr= parameters.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/netfilter/nf_conntrack_sip.h b/include/linux/netfilter/nf_conntrack_sip.h
index da93e80804c2..87e402825dba 100644
--- a/include/linux/netfilter/nf_conntrack_sip.h
+++ b/include/linux/netfilter/nf_conntrack_sip.h
@@ -93,6 +93,16 @@ extern int ct_sip_parse_header_uri(const struct nf_conn *ct, const char *dptr,
                                    enum sip_header_types type, int *in_header,
                                    unsigned int *matchoff, unsigned int *matchlen,
                                    union nf_inet_addr *addr, __be16 *port);
+extern int ct_sip_parse_address_param(const struct nf_conn *ct, const char *dptr,
+                                      unsigned int dataoff, unsigned int datalen,
+                                      const char *name,
+                                      unsigned int *matchoff, unsigned int *matchlen,
+                                      union nf_inet_addr *addr);
+extern int ct_sip_parse_numerical_param(const struct nf_conn *ct, const char *dptr,
+                                        unsigned int off, unsigned int datalen,
+                                        const char *name,
+                                        unsigned int *matchoff, unsigned int *matchen,
+                                        unsigned int *val);
 
 extern int ct_sip_get_sdp_header(const struct nf_conn *ct, const char *dptr,
                                  unsigned int dataoff, unsigned int datalen,