fix tls1.3 in nginx

Author: JSroka7

server/plugins-available/nginx_plugin.inc.php

@@ -1631,8 +1631,11 @@ function update($event_name, $data) {
 		// set logging variable
 		$vhost_data['logging'] = $web_config['logging'];
 
-         // Provide TLS 1.3 support if Nginx version is >= 1.13.0 and when it was linked against OpenSSL(>=1.1.1) at build time.
-		if((version_compare($app->system->getnginxversion(true), '1.13.0', '>=') && version_compare($app->system->getopensslversion(true), '1.1.1', '>='))) {
+		// Provide TLS 1.3 support if Nginx version is >= 1.13.0 and when it was linked against OpenSSL(>=1.1.1) at build time and when it was linked against OpenSSL(>=1.1.1) at runtime.
+		$nginx_openssl_ver = $app->system->exec_safe('nginx -V 2>&1 | grep OpenSSL | sed \'s/.*built\([a-zA-Z ]*\)OpenSSL \([0-9.]*\).*/\2/\'');
+		if(version_compare($app->system->getnginxversion(true), '1.13.0', '>=')
+			&& version_compare($nginx_openssl_ver, '1.1.1', '>=')
+			&& version_compare($app->system->getopensslversion(true), '1.1.1', '>=')) {
 			$app->log('Enable TLS 1.3 for: '.$domain, LOGLEVEL_DEBUG);
 			$vhost_data['tls13_supported'] = "y";
 		}