Check whether certificate file exists

Author: iazema

default-wp-saml-auth.php

@@ -30,7 +30,7 @@
 namespace BEAPI\Plugin_Defaults\Wp_Saml_Auth;
 
 // Constants to be defined as env vars
-if ( ! defined( 'SAML_IDP_ENTITY_ID' ) || ! defined( 'SAML_IDP_URL' ) || ! defined( 'SAML_LOGOUT_URL' ) || ! defined( 'SAML_CERT_PATH' ) ) {
+if ( ! defined( 'SAML_IDP_ENTITY_ID' ) || ! defined( 'SAML_IDP_URL' ) || ! defined( 'SAML_LOGOUT_URL' ) || ! defined( 'SAML_CERT_PATH' ) || ! file_exists( SAML_CERT_PATH ) ) {
 	return;
 }