From 1a6fd530e055a1dd579dc6ca95c274651105dc3a Mon Sep 17 00:00:00 2001
From: Aki Tuomi <cmouse@cmouse.fi>
Date: Fri, 29 May 2020 09:13:49 +0300
Subject: [PATCH] tinydnsbackend: Ignore duplicate SOA records

tinydns data format can generate multiple SOA records, so
ignore them to avoid listing same domain many times.
---
 modules/tinydnsbackend/tinydnsbackend.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/modules/tinydnsbackend/tinydnsbackend.cc b/modules/tinydnsbackend/tinydnsbackend.cc
index 1de99d5e02..b4d015fc60 100644
--- a/modules/tinydnsbackend/tinydnsbackend.cc
+++ b/modules/tinydnsbackend/tinydnsbackend.cc
@@ -163,9 +163,10 @@ void TinyDNSBackend::getAllDomains(vector<DomainInfo> *domains, bool include_dis
 
   d_cdbReader->searchAll();
   DNSResourceRecord rr;
+  std::unordered_set<DNSName> dupcheck;
 
   while (get(rr)) {
-    if (rr.qtype.getCode() == QType::SOA) {
+    if (rr.qtype.getCode() == QType::SOA && dupcheck.insert(rr.qname).second) {
       SOAData sd;
       fillSOAData(rr.content, sd);
 
-- 
2.47.2