From 3e3a508cddeafa0ab81d046a39ed6fc5b0d2ee11 Mon Sep 17 00:00:00 2001
From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Wed, 18 Jan 2023 14:58:55 +0100
Subject: [PATCH] dnsdist: Gracefully handle a failure to create a TLS server
 context

---
 pdns/libssl.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pdns/libssl.cc b/pdns/libssl.cc
index 6026bdba3f..4c1fa51174 100644
--- a/pdns/libssl.cc
+++ b/pdns/libssl.cc
@@ -806,6 +806,11 @@ std::unique_ptr<SSL_CTX, void(*)(SSL_CTX*)> libssl_init_server_context(const TLS
 {
   auto ctx = std::unique_ptr<SSL_CTX, void(*)(SSL_CTX*)>(SSL_CTX_new(SSLv23_server_method()), SSL_CTX_free);
 
+  if (!ctx) {
+    ERR_print_errors_fp(stderr);
+    throw std::runtime_error("Error creating an OpenSSL server context");
+  }
+
   int sslOptions =
     SSL_OP_NO_SSLv2 |
     SSL_OP_NO_SSLv3 |
-- 
2.47.2