From ba731a422ab3eb3c31d85d3683338abadb5a800b Mon Sep 17 00:00:00 2001
From: Peter van Dijk <peter.van.dijk@powerdns.com>
Date: Wed, 26 Jan 2022 13:24:25 +0100
Subject: [PATCH] auth lmdb: add a UUID to newly created databases

---
 modules/lmdbbackend/lmdbbackend.cc | 9 +++++++++
 pdns/Makefile.am                   | 1 +
 2 files changed, 10 insertions(+)

diff --git a/modules/lmdbbackend/lmdbbackend.cc b/modules/lmdbbackend/lmdbbackend.cc
index 03b3fb38a8..7c3173a174 100644
--- a/modules/lmdbbackend/lmdbbackend.cc
+++ b/modules/lmdbbackend/lmdbbackend.cc
@@ -34,11 +34,13 @@
 #include "pdns/version.hh"
 #include "pdns/arguments.hh"
 #include "pdns/lock.hh"
+#include "pdns/uuid-utils.hh"
 #include <boost/archive/binary_oarchive.hpp>
 #include <boost/archive/binary_iarchive.hpp>
 #include <boost/serialization/vector.hpp>
 #include <boost/serialization/string.hpp>
 #include <boost/serialization/utility.hpp>
+#include <boost/uuid/uuid_serialize.hpp>
 
 #include <boost/iostreams/device/back_inserter.hpp>
 
@@ -115,6 +117,13 @@ LMDBBackend::LMDBBackend(const std::string& suffix)
         txn->put(pdnsdbi, "shards", s_shards);
       }
 
+      MDBOutVal gotuuid;
+      if (txn->get(pdnsdbi, "uuid", gotuuid)) {
+        const auto uuid = getUniqueID();
+        const string uuids(uuid.begin(), uuid.end());
+        txn->put(pdnsdbi, "uuid", uuids);
+      }
+
       txn->commit();
 
       if (schemaversion < 3) {
diff --git a/pdns/Makefile.am b/pdns/Makefile.am
index 431ff8cfd6..43656a7d41 100644
--- a/pdns/Makefile.am
+++ b/pdns/Makefile.am
@@ -378,6 +378,7 @@ pdnsutil_SOURCES = \
 	tsigutils.hh tsigutils.cc \
 	ueberbackend.cc \
 	unix_utility.cc \
+	uuid-utils.hh uuid-utils.cc \
 	zonemd.hh zonemd.cc \
 	zoneparser-tng.cc
 
-- 
2.47.2