From fcbf18c92918ce5e81d0aab62a7aed5c2245ea4d Mon Sep 17 00:00:00 2001
From: Eneas U de Queiroz <cote2004-github@yahoo.com>
Date: Fri, 1 Jun 2018 11:17:28 -0300
Subject: [PATCH] Add compatibility with openssl 1.1.0

Minor adjustments were needed:
* Openssl 1.1 libs do not need to be initialized.
* TLSv*_method became TLS_*_method.

Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>
Upstream: https://github.com/networkupstools/nut/pull/558/
[added check for libressl]
Signed-off-by: Patrick Havelange <patrick.havelange@essensium.com>
---
 clients/upsclient.c        | 5 ++++-
 m4/nut_check_libopenssl.m4 | 2 +-
 server/netssl.c            | 7 +++++--
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/clients/upsclient.c b/clients/upsclient.c
index b90587b0..053d60fb 100644
--- a/clients/upsclient.c
+++ b/clients/upsclient.c
@@ -316,10 +316,13 @@ int upscli_init(int certverify, const char *certpath,
 	
 #ifdef WITH_OPENSSLdefined(LIBRESSL_VERSION_NUMBER)
 	
+# if (OPENSSL_VERSION_NUMBER < 0x10100000L) || defined(LIBRESSL_VERSION_NUMBER)
 	SSL_library_init();
 	SSL_load_error_strings();
+#  define TLS_client_method TLSv1_client_method
+# endif /* OPENSSL_VERSION_NUMBER < 0x10100000L */
 
-	ssl_method = TLSv1_client_method();
+	ssl_method = TLS_client_method();
 
 	if (!ssl_method) {
 		return 0;
diff --git a/m4/nut_check_libopenssl.m4 b/m4/nut_check_libopenssl.m4
index 1b875077..7eb401cd 100644
--- a/m4/nut_check_libopenssl.m4
+++ b/m4/nut_check_libopenssl.m4
@@ -58,7 +58,7 @@ if test -z "${nut_have_libopenssl_seen}"; then
 
 	dnl check if openssl is usable
 	AC_CHECK_HEADERS(openssl/ssl.h, [nut_have_openssl=yes], [nut_have_openssl=no], [AC_INCLUDES_DEFAULT])
-	AC_CHECK_FUNCS(SSL_library_init, [], [nut_have_openssl=no])
+	AC_CHECK_FUNCS(SSL_CTX_new, [], [nut_have_openssl=no])
 
 	if test "${nut_have_openssl}" = "yes"; then
 		nut_with_ssl="yes"
diff --git a/server/netssl.c b/server/netssl.c
index c2f40989..0289e296 100644
--- a/server/netssl.c
+++ b/server/netssl.c
@@ -387,12 +387,15 @@ void ssl_init(void)
 
 #ifdef WITH_OPENSSL
 
+# if (OPENSSL_VERSION_NUMBER < 0x10100000L) || defined(LIBRESSL_VERSION_NUMBER)
 	SSL_load_error_strings();
 	SSL_library_init();
+#  define TLS_server_method TLSv1_server_method
+# endif /* OPENSSL_VERSION_NUMBER < 0x10100000L */
 
-	if ((ssl_method = TLSv1_server_method()) == NULL) {
+	if ((ssl_method = TLS_server_method()) == NULL) {
 		ssl_debug();
-		fatalx(EXIT_FAILURE, "TLSv1_server_method failed");
+		fatalx(EXIT_FAILURE, "TLS_server_method failed");
 	}
 
 	if ((ssl_ctx = SSL_CTX_new(ssl_method)) == NULL) {
-- 
2.16.1