diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/OpenId/Extension.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/OpenId/Extension.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,137 @@
+<?php
+
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_OpenId
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Extension.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+/**
+ * Abstract extension class for Zend_OpenId
+ *
+ * @category   Zend
+ * @package    Zend_OpenId
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+abstract class Zend_OpenId_Extension
+{
+
+    /**
+     * Calls given function with given argument for all extensions
+     *
+     * @param mixed $extensions list of extensions or one extension
+     * @param string $func function to be called
+     * @param mixed &$params argument to pass to given funcion
+     * @return bool
+     */
+    static public function forAll($extensions, $func, &$params)
+    {
+        if ($extensions !== null) {
+            if (is_array($extensions)) {
+                foreach ($extensions as $ext) {
+                    if ($ext instanceof Zend_OpenId_Extension) {
+                        if (!$ext->$func($params)) {
+                            return false;
+                        }
+                    } else {
+                        return false;
+                    }
+                }
+            } else if (!is_object($extensions) ||
+                       !($extensions instanceof Zend_OpenId_Extension) ||
+                       !$extensions->$func($params)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Method to add additional data to OpenId 'checkid_immediate' or
+     * 'checkid_setup' request. This method addes nothing but inherited class
+     * may add additional data into request.
+     *
+     * @param array &$params request's var/val pairs
+     * @return bool
+     */
+    public function prepareRequest(&$params)
+    {
+        return true;
+    }
+
+    /**
+     * Method to parse OpenId 'checkid_immediate' or 'checkid_setup' request
+     * and initialize object with passed data. This method parses nothing but
+     * inherited class may override this method to do somthing.
+     *
+     * @param array $params request's var/val pairs
+     * @return bool
+     */
+    public function parseRequest($params)
+    {
+        return true;
+    }
+
+    /**
+     * Method to add additional data to OpenId 'id_res' response. This method
+     * addes nothing but inherited class may add additional data into response.
+     *
+     * @param array &$params response's var/val pairs
+     * @return bool
+     */
+    public function prepareResponse(&$params)
+    {
+        return true;
+    }
+
+    /**
+     * Method to parse OpenId 'id_res' response and initialize object with
+     * passed data. This method parses nothing but inherited class may override
+     * this method to do somthing.
+     *
+     * @param array $params response's var/val pairs
+     * @return bool
+     */
+    public function parseResponse($params)
+    {
+        return true;
+    }
+
+    /**
+     * Method to prepare data to store it in trusted servers database.
+     *
+     * @param array &$data data to be stored in tusted servers database
+     * @return bool
+     */
+    public function getTrustData(&$data)
+    {
+        return true;
+    }
+
+    /**
+     * Method to check if data from trusted servers database is enough to
+     * sutisfy request.
+     *
+     * @param array $data data from tusted servers database
+     * @return bool
+     */
+    public function checkTrustData($data)
+    {
+        return true;
+    }
+}