[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>
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David S. Miller
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9467ee380a
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2bbb21168a
@@ -93,6 +93,16 @@ extern int ct_sip_parse_header_uri(const struct nf_conn *ct, const char *dptr,
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enum sip_header_types type, int *in_header,
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unsigned int *matchoff, unsigned int *matchlen,
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union nf_inet_addr *addr, __be16 *port);
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extern int ct_sip_parse_address_param(const struct nf_conn *ct, const char *dptr,
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unsigned int dataoff, unsigned int datalen,
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const char *name,
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unsigned int *matchoff, unsigned int *matchlen,
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union nf_inet_addr *addr);
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extern int ct_sip_parse_numerical_param(const struct nf_conn *ct, const char *dptr,
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unsigned int off, unsigned int datalen,
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const char *name,
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unsigned int *matchoff, unsigned int *matchen,
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unsigned int *val);
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extern int ct_sip_get_sdp_header(const struct nf_conn *ct, const char *dptr,
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unsigned int dataoff, unsigned int datalen,
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