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<?php
/* The OpenID library relies on manual loading of classes. */
require_once('Auth/OpenID/Interface.php');
require_once('Auth/OpenID/Association.php');
/**
* Implementation of Auth_OpenID_OpenIDStore which saves the state in
* an state-array.
*
* @package simpleSAMLphp
* @version $Id$
*/
class sspmod_openid_StateStore extends Auth_OpenID_OpenIDStore{
/**
* Reference to the state array.
*/
private $state;
/**
* Reference to the array with associations in the state array.
*/
private $associations;
/**
* Initializes the store object.
*
* @param array &$state Reference to the state array.
*/
public function __construct(&$state) {
assert('is_array($state)');
$this->state =& $state;
if (!array_key_exists('openid:Assocs', $state)) {
$state['openid:Assocs'] = array();
}
$this->associations =& $state['openid:Assocs'];
}
/**
* Determine whether a given nonce can be used.
*
* This implementation accepts all nonces, and relies on the state array
* being invalidated when login completes to prevent replay attacks.
*
* @return bool This function always returns TRUE.
*/
public function useNonce($server_url, $timestamp, $salt) {
return TRUE;
}
/**
* Retrieve all associations for a given server.
*
* The associations are returned as an associative array with the
* association handle as the index and the association object as
* the value.
*
* @param string $server_url The server.
* @return array Associative array with associations.
*/
private function getServerAssociations($server_url) {
assert('is_string($server_url)');
if (!array_key_exists($server_url, $this->associations)) {
return array();
}
$ret = array();
foreach ($this->associations[$server_url] as $handle => $association) {
$association = Auth_OpenID_Association::deserialize(
'Auth_OpenID_Association', $association);
if ($association === NULL) {
continue;
}
if ($association->getExpiresIn() == 0) {
continue;
}
$ret[$handle] = $association;
}
return $ret;
}
/**
* Retrieve an association with the given handle.
*
* @param string $server_url The server.
* @param string $handle The handle of the association.
* @return Auth_OpenID_Association|NULL The association object, if it is found.
*/
private function readAssociation($server_url, $handle) {
assert('is_string($server_url)');
assert('is_string($handle)');
$sassoc = $this->getServerAssociations($server_url);
if (!array_key_exists($handle, $sassoc)) {
return NULL;
}
return $sassoc[$handle];
}
/**
* Retrieve an association.
*
* This function retrieves an association with the given handle, or the most
* recent association if no handle is given.
*
* @param string $server_url The server.
* @param string|NULL $handle The association handle.
* @return Auth_OpenID_Association|NULL The association object, if it is found.
*/
public function getAssociation($server_url, $handle = NULL) {
assert('is_string($server_url)');
assert('is_null($handle) || is_string($handle)');
if ($handle !== NULL) {
return $this->readAssociation($server_url, $handle);
}
/* $handle is NULL - we should retrieve the most recent association. */
$sassoc = $this->getServerAssociations($server_url);
$recentAssoc = NULL;
foreach ($sassoc as $handle => $association) {
if ($recentAssoc === NULL) {
/* No $recentAssoc - this is the most recent association. */
$recentAssoc = $association;
continue;
}
if ($association->issued > $recentAssoc->issued) {
/* More recently issued than $recentAssoc. */
$recentAssoc = $association;
}
}
return $recentAssoc;
}
/**
* Store an association.
*
* This function stores an association.
* @param string $server_url The server.
* @param Auth_OpenID_Association $association The association which should be stored.
* @return bool TRUE if the association is stored, FALSE if not.
*/
public function storeAssociation($server_url, Auth_OpenID_Association $association) {
assert('is_string($server_url)');
if (!array_key_exists($server_url, $this->associations)) {
$this->associations[$server_url] = array();
}
$handle = $association->handle;
assert('is_string($handle)');
$this->associations[$server_url][$handle] = $association->serialize();
/* We rely on saveState saving with the same id as before. */
SimpleSAML_Auth_State::saveState($this->state, 'openid:auth');
return TRUE;
}
}
?>
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