Check stub dialup option values.

lib/dns/config/confzone.c

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: confzone.c,v 1.65 2000/11/25 02:43:51 marka Exp $ */
+/* $Id: confzone.c,v 1.66 2000/11/28 03:22:55 marka Exp $ */
 
 #include <config.h>
 
@@ -1690,6 +1690,14 @@ dns_c_zone_setdialup(dns_c_zone_t *zone, dns_dialuptype_t newval) {
 		break;
 
 	case dns_c_zone_stub:
+		if (newval == dns_dialuptype_notify ||
+		    newval == dns_dialuptype_notifypassive) {
+			isc_log_write(dns_lctx, DNS_LOGCATEGORY_CONFIG,
+				      DNS_LOGMODULE_CONFIG, ISC_LOG_CRITICAL,
+				      "non-stub dialup option '%s'",
+				      dialup_totext(newval));
+			return (ISC_R_FAILURE);
+		}
 		zone->u.tzone.dialup = newval;
 		existed = DNS_C_CHECKBIT(TZ_DIALUP_BIT,
 					 &zone->u.tzone.setflags);