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

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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>
This commit is contained in:
Patrick McHardy 2008-03-25 20:24:24 -07:00 • committed by David S. Miller
parent 9467ee380a
commit 2bbb21168a
2 changed files with 68 additions and 0 deletions
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10
include/linux/netfilter/nf_conntrack_sip.h
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@ -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,