commit vendor

vendor/sabre/dav/lib/DAV/Auth/Backend/BackendInterface.php

@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Sabre\DAV\Auth\Backend;
+
+use Sabre\HTTP\RequestInterface;
+use Sabre\HTTP\ResponseInterface;
+
+/**
+ * This is the base class for any authentication object.
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+interface BackendInterface
+{
+    /**
+     * When this method is called, the backend must check if authentication was
+     * successful.
+     *
+     * The returned value must be one of the following
+     *
+     * [true, "principals/username"]
+     * [false, "reason for failure"]
+     *
+     * If authentication was successful, it's expected that the authentication
+     * backend returns a so-called principal url.
+     *
+     * Examples of a principal url:
+     *
+     * principals/admin
+     * principals/user1
+     * principals/users/joe
+     * principals/uid/123457
+     *
+     * If you don't use WebDAV ACL (RFC3744) we recommend that you simply
+     * return a string such as:
+     *
+     * principals/users/[username]
+     *
+     * @return array
+     */
+    public function check(RequestInterface $request, ResponseInterface $response);
+
+    /**
+     * This method is called when a user could not be authenticated, and
+     * authentication was required for the current request.
+     *
+     * This gives you the opportunity to set authentication headers. The 401
+     * status code will already be set.
+     *
+     * In this case of Basic Auth, this would for example mean that the
+     * following header needs to be set:
+     *
+     * $response->addHeader('WWW-Authenticate', 'Basic realm=SabreDAV');
+     *
+     * Keep in mind that in the case of multiple authentication backends, other
+     * WWW-Authenticate headers may already have been set, and you'll want to
+     * append your own WWW-Authenticate header instead of overwriting the
+     * existing one.
+     */
+    public function challenge(RequestInterface $request, ResponseInterface $response);
+}