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caclulate nlabels and set *chainingp correctly

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This commit is contained in:
Evan Hunt 2018-07-24 10:18:58 -07:00
parent 9d7ad52506
commit 3f907b8bee
2 changed files with 5 additions and 3 deletions
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1
bin/tests/system/resolver/tests.sh
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@ -204,6 +204,7 @@ n=`expr $n + 1`
echo_i "checking DNAME target filtering (deny) ($n)"
ret=0
$DIG $DIGOPTS +tcp foo.baddname.example.net @10.53.0.1 a > dig.out.ns1.test${n} || ret=1
grep "DNAME target foo.baddname.example.org denied for foo.baddname.example.net/IN" ns1/named.run >/dev/null || ret=1
grep "status: SERVFAIL" dig.out.ns1.test${n} > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`

7
lib/dns/resolver.c
View file

@ -6640,13 +6640,14 @@ is_answertarget_allowed(fetchctx_t *fctx, dns_name_t *qname, dns_name_t *rname,
RUNTIME_CHECK(result == ISC_R_SUCCESS);
dns_name_init(&prefix, NULL);
tname = dns_fixedname_initname(&fixed);
nlabels = dns_name_countlabels(qname) -
dns_name_countlabels(rname);
INSIST(nlabels > 0);
nlabels = dns_name_countlabels(rname);
dns_name_split(qname, nlabels, &prefix, NULL);
result = dns_name_concatenate(&prefix, &dname.dname, tname,
NULL);
if (result == DNS_R_NAMETOOLONG) {
if (chainingp != NULL) {
*chainingp = true;
}
return (true);
}
RUNTIME_CHECK(result == ISC_R_SUCCESS);