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+<?php
+
+/**
+ * This file supplies a dumb store backend for OpenID servers and
+ * consumers.
+ *
+ * PHP versions 4 and 5
+ *
+ * LICENSE: See the COPYING file included in this distribution.
+ *
+ * @package OpenID
+ * @author JanRain, Inc. <openid@janrain.com>
+ * @copyright 2005-2008 Janrain, Inc.
+ * @license http://www.apache.org/licenses/LICENSE-2.0 Apache
+ */
+
+/**
+ * Import the interface for creating a new store class.
+ */
+require_once 'Auth/OpenID/Interface.php';
+require_once 'Auth/OpenID/HMAC.php';
+
+/**
+ * This is a store for use in the worst case, when you have no way of
+ * saving state on the consumer site. Using this store makes the
+ * consumer vulnerable to replay attacks, as it's unable to use
+ * nonces. Avoid using this store if it is at all possible.
+ *
+ * Most of the methods of this class are implementation details.
+ * Users of this class need to worry only about the constructor.
+ *
+ * @package OpenID
+ */
+class Auth_OpenID_DumbStore extends Auth_OpenID_OpenIDStore {
+
+ /**
+ * Creates a new {@link Auth_OpenID_DumbStore} instance. For the security
+ * of the tokens generated by the library, this class attempts to
+ * at least have a secure implementation of getAuthKey.
+ *
+ * When you create an instance of this class, pass in a secret
+ * phrase. The phrase is hashed with sha1 to make it the correct
+ * length and form for an auth key. That allows you to use a long
+ * string as the secret phrase, which means you can make it very
+ * difficult to guess.
+ *
+ * Each {@link Auth_OpenID_DumbStore} instance that is created for use by
+ * your consumer site needs to use the same $secret_phrase.
+ *
+ * @param string secret_phrase The phrase used to create the auth
+ * key returned by getAuthKey
+ */
+ function Auth_OpenID_DumbStore($secret_phrase)
+ {
+ $this->auth_key = Auth_OpenID_SHA1($secret_phrase);
+ }
+
+ /**
+ * This implementation does nothing.
+ */
+ function storeAssociation($server_url, $association)
+ {
+ }
+
+ /**
+ * This implementation always returns null.
+ */
+ function getAssociation($server_url, $handle = null)
+ {
+ return null;
+ }
+
+ /**
+ * This implementation always returns false.
+ */
+ function removeAssociation($server_url, $handle)
+ {
+ return false;
+ }
+
+ /**
+ * In a system truly limited to dumb mode, nonces must all be
+ * accepted. This therefore always returns true, which makes
+ * replay attacks feasible.
+ */
+ function useNonce($server_url, $timestamp, $salt)
+ {
+ return true;
+ }
+
+ /**
+ * This method returns the auth key generated by the constructor.
+ */
+ function getAuthKey()
+ {
+ return $this->auth_key;
+ }
+}
+