Make NameID optional

Author: pitbulk

onelogin-saml-sso/php/functions.php

@@ -167,7 +167,12 @@ function saml_acs() {
 	$attrs = $auth->getAttributes();
 
 	if (empty($attrs)) {
-		$username = $auth->getNameId();
+		$nameid = $auth->getNameId();
+		if (empty($nameid)) {
+			echo __("The SAMLResponse may contain NameID or AttributeStatement");
+			exit();
+		}
+		$username = $nameid;
 		$email = $username;
 	} else {
 		$usernameMapping = get_option('onelogin_saml_attr_mapping_username');

onelogin-saml-sso/php/settings.php

@@ -97,6 +97,7 @@
         'wantMessagesSigned' => $opt['wantMessagesSigned'] == 'on'? true: false,
         'wantAssertionsSigned' => $opt['wantAssertionsSigned'] == 'on'? true: false,
         'wantAssertionsEncrypted' => $opt['wantAssertionsEncrypted'] == 'on'? true: false,
+        'wantNameId' => false,
         'requestedAuthnContext' => $opt['requestedAuthnContext'],
         'relaxDestinationValidation' => true,
         'lowercaseUrlencoding' => get_option('