Fix bug when resulted in NXDOMAIN answers instead of NODATA.

check_for_local_domain() was broken due to new code matching F_*
bits in cache entries for DNSSEC. Because F_DNSKEY | F_DS is
used to match RRSIG entries, cache_find_by_name() insists on an exact match
of those bits. So adding F_DS to the bits that check_for_local_domain()
sends to cache_find_by_name() won't result in DS records as well
as the others, it results in only DS records. Add a new bit, F_NSIGMATCH
which suitably changes the behaviour of cache_find_by_name().
This commit is contained in:
Simon Kelley
2014-09-18 21:48:51 +01:00
parent 10cfc0ddb3
commit 288df49c96
4 changed files with 12 additions and 3 deletions

View File

@@ -636,7 +636,7 @@ struct crec *cache_find_by_name(struct crec *crecp, char *name, time_t now, unsi
{
if ((crecp->flags & F_FORWARD) &&
#ifdef HAVE_DNSSEC
((crecp->flags & (F_DNSKEY | F_DS)) == (prot & (F_DNSKEY | F_DS))) &&
(((crecp->flags & (F_DNSKEY | F_DS)) == (prot & (F_DNSKEY | F_DS))) || (prot & F_NSIGMATCH)) &&
#endif
(crecp->flags & prot) &&
hostname_isequal(cache_get_name(crecp), name))
@@ -696,7 +696,7 @@ struct crec *cache_find_by_name(struct crec *crecp, char *name, time_t now, unsi
if (ans &&
(ans->flags & F_FORWARD) &&
#ifdef HAVE_DNSSEC
((ans->flags & (F_DNSKEY | F_DS)) == (prot & (F_DNSKEY | F_DS))) &&
(((ans->flags & (F_DNSKEY | F_DS)) == (prot & (F_DNSKEY | F_DS))) || (prot & F_NSIGMATCH)) &&
#endif
(ans->flags & prot) &&
hostname_isequal(cache_get_name(ans), name))