If there are multiple SOA RRs, and we look for a suitable one covering
our request, then make sure to pick the one that is furthest away from
the root name, not just the first one we encounter.
}
int dns_answer_find_soa(DnsAnswer *a, const DnsResourceKey *key, DnsResourceRecord **ret, DnsAnswerFlags *flags) {
- DnsResourceRecord *rr;
- DnsAnswerFlags rr_flags;
+ DnsResourceRecord *rr, *soa = NULL;
+ DnsAnswerFlags rr_flags, soa_flags = 0;
int r;
assert(key);
if (r < 0)
return r;
if (r > 0) {
- if (ret)
- *ret = rr;
- if (flags)
- *flags = rr_flags;
- return 1;
+
+ if (soa) {
+ r = dns_name_endswith(DNS_RESOURCE_KEY_NAME(rr->key), DNS_RESOURCE_KEY_NAME(soa->key));
+ if (r < 0)
+ return r;
+ if (r > 0)
+ continue;
+ }
+
+ soa = rr;
+ soa_flags = rr_flags;
}
}
- return 0;
+ if (!soa)
+ return 0;
+
+ if (ret)
+ *ret = soa;
+ if (flags)
+ *flags = soa_flags;
+
+ return 1;
}
int dns_answer_find_cname_or_dname(DnsAnswer *a, const DnsResourceKey *key, DnsResourceRecord **ret, DnsAnswerFlags *flags) {