From 9c93337d9781d4d85d84d9442297a2013c492837 Mon Sep 17 00:00:00 2001
From: James Muehlner <james.muehlner@guac-dev.org>
Date: Sat, 30 Jul 2022 02:24:31 +0000
Subject: [PATCH] GUACAMOLE-1652: Migrate OpenSSL initialization to modern
 methods for OpenSSL >= 1.1.0.

---
 src/guacd/daemon.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/guacd/daemon.c b/src/guacd/daemon.c
index 2861cffe..8bf30351 100644
--- a/src/guacd/daemon.c
+++ b/src/guacd/daemon.c
@@ -381,10 +381,15 @@ int main(int argc, char* argv[]) {
         CRYPTO_set_locking_callback(guacd_openssl_locking_callback);
 #endif
 
-        /* Init SSL */
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+        /* Init OpenSSL for OpenSSL Versions < 1.1.0 */
         SSL_library_init();
         SSL_load_error_strings();
         ssl_context = SSL_CTX_new(SSLv23_server_method());
+#else
+        /* Set up OpenSSL for OpenSSL Versions >= 1.1.0 */
+        ssl_context = SSL_CTX_new(TLS_server_method());
+#endif
 
         /* Load key */
         if (config->key_file != NULL) {