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From 162e5e0062ce923c494cc64282f293f0ed64fc10 Mon Sep 17 00:00:00 2001
From: Sven Mueller <smu@google.com>
Date: Wed, 27 Feb 2019 21:17:37 +0000
Subject: [PATCH 34/57] Fix bug added in 2.80 non-terminal code which returns
NODATA instead of NXDOMAIN.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Thanks to Sven Muleller and Maciej Żenczykowski for work on this.
https://bugzilla.redhat.com/show_bug.cgi?id=1674067 refers.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
---
CHANGELOG | 5 +++++
src/cache.c | 1 +
2 files changed, 6 insertions(+)
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -21,6 +21,11 @@ version 2.81
correct error messages. Thanks to Christian Rosentreter
for reporting this.
+ Fix bug in DNS non-terminal code, added in 2.80, which could
+ sometimes cause a NODATA rather than an NXDOMAIN reply.
+ Thanks to Sven Mueller and Maciej Żenczykowski for spotting
+ and diagnosing the bug and providing patches.
+
version 2.80
Add support for RFC 4039 DHCP rapid commit. Thanks to Ashram Method
--- a/src/cache.c
+++ b/src/cache.c
@@ -790,6 +790,7 @@ int cache_find_non_terminal(char *name,
if (!is_outdated_cname_pointer(crecp) &&
!is_expired(now, crecp) &&
(crecp->flags & F_FORWARD) &&
+ !(crecp->flags & F_NXDOMAIN) &&
hostname_isequal(name, cache_get_name(crecp)))
return 1;
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