[feature/auth-refactor] Have a base auth class

PHPBB3-9734

phpBB/includes/auth/provider/base.php

@@ -0,0 +1,69 @@
+<?php
+/**
+*
+* @package auth
+* @copyright (c) 2013 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * Base authentication provider class that all other providers must implement.
+ *
+ * @package auth
+ */
+abstract class phpbb_auth_provider_base implements phpbb_auth_provider_interface
+{
+	/**
+	 * {@inheritdoc}
+	 */
+	public function init()
+	{
+		return;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	abstract public function login($username, $password);
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function autologin()
+	{
+		return;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function acp($new)
+	{
+		return;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function logout($data, $new_session)
+	{
+		return;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function validate_session($user)
+	{
+		return;
+	}
+}