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resolved: when synthesizing NODATA from cached NSEC bitmaps, honour CNAME/DNAME 

When an RR type is not set in an NSEC, then the CNAME/DNAME types might
still be, hence check them too.

Otherwise we might end up refusing resolving of CNAME'd RRs if we cached
an NSEC before.
This commit is contained in:
Lennart Poettering 2015-12-03 21:03:00 +01:00
parent 2cd8727718
commit 3ba27cd339
1 changed files with 3 additions and 1 deletions
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4
src/resolve/resolved-dns-cache.c
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@ -636,7 +636,9 @@ int dns_cache_lookup(DnsCache *c, DnsResourceKey *key, int *rcode, DnsAnswer **r
*ret = NULL;
*rcode = DNS_RCODE_SUCCESS;
return !bitmap_isset(nsec->nsec.types, key->type);
return !bitmap_isset(nsec->nsec.types, key->type) &&
!bitmap_isset(nsec->nsec.types, DNS_TYPE_CNAME) &&
!bitmap_isset(nsec->nsec.types, DNS_TYPE_DNAME);
}
log_debug("%s cache hit for %s",