From 07e25da5bf26d46aad4f1d2eb19b260789182004 Mon Sep 17 00:00:00 2001
From: Simon Kelley <simon@thekelleys.org.uk>
Date: Sun, 16 Dec 2018 18:21:58 +0000
Subject: [PATCH 13/30] Treat DS and DNSKEY queries being forwarded the same as
 those locally originated.

The queries will not be forwarded to a server for a domain, unless
there's a trust anchor provided for that domain. This allows, especially,
suitable proof of non-existance for DS records to come from
the parent domain for domains which are not signed.

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
---
 src/rfc1035.c | 7 +++++++
 1 file changed, 7 insertions(+)

--- a/src/rfc1035.c
+++ b/src/rfc1035.c
@@ -916,6 +916,13 @@ unsigned int extract_request(struct dns_
       if (qtype == T_ANY)
 	return  F_IPV4 | F_IPV6;
     }
+
+  /* F_DNSSECOK as agument to search_servers() inhibits forwarding
+     to servers for domains without a trust anchor. This make the
+     behaviour for DS and DNSKEY queries we forward the same
+     as for DS and DNSKEY queries we originate. */
+  if (qtype == T_DS || qtype == T_DNSKEY)
+    return F_DNSSECOK;
   
   return F_QUERY;
 }
