[NETFILTER]: nf_nat_sip: get rid of text based header translation
Use the URI parsing helper to get the numerical addresses and get rid of the
text based header translation.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index a74d76a..f20fa2d 100644
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -151,10 +151,12 @@
*/
int ct_sip_parse_request(const struct nf_conn *ct,
const char *dptr, unsigned int datalen,
- unsigned int *matchoff, unsigned int *matchlen)
+ unsigned int *matchoff, unsigned int *matchlen,
+ union nf_inet_addr *addr, __be16 *port)
{
- const char *start = dptr, *limit = dptr + datalen;
+ const char *start = dptr, *limit = dptr + datalen, *end;
unsigned int mlen;
+ unsigned int p;
int shift = 0;
/* Skip method and following whitespace */
@@ -173,10 +175,25 @@
if (strnicmp(dptr, "sip:", strlen("sip:")) == 0)
break;
}
- *matchlen = skp_epaddr_len(ct, dptr, limit, &shift);
- if (!*matchlen)
+ if (!skp_epaddr_len(ct, dptr, limit, &shift))
return 0;
- *matchoff = dptr - start + shift;
+ dptr += shift;
+
+ if (!parse_addr(ct, dptr, &end, addr, limit))
+ return -1;
+ if (end < limit && *end == ':') {
+ end++;
+ p = simple_strtoul(end, (char **)&end, 10);
+ if (p < 1024 || p > 65535)
+ return -1;
+ *port = htons(p);
+ } else
+ *port = htons(SIP_PORT);
+
+ if (end == dptr)
+ return 0;
+ *matchoff = dptr - start;
+ *matchlen = end - dptr;
return 1;
}
EXPORT_SYMBOL_GPL(ct_sip_parse_request);