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<?php
/**
* This file specifies the interface for PHP OpenID store implementations.
*
* 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
*/
/**
* This is the interface for the store objects the OpenID library
* uses. It is a single class that provides all of the persistence
* mechanisms that the OpenID library needs, for both servers and
* consumers. If you want to create an SQL-driven store, please see
* then {@link Auth_OpenID_SQLStore} class.
*
* Change: Version 2.0 removed the storeNonce, getAuthKey, and isDumb
* methods, and changed the behavior of the useNonce method to support
* one-way nonces.
*
* @package OpenID
* @author JanRain, Inc. <openid@janrain.com>
*/
class Auth_OpenID_OpenIDStore {
/**
* This method puts an Association object into storage,
* retrievable by server URL and handle.
*
* @param string $server_url The URL of the identity server that
* this association is with. Because of the way the server portion
* of the library uses this interface, don't assume there are any
* limitations on the character set of the input string. In
* particular, expect to see unescaped non-url-safe characters in
* the server_url field.
*
* @param Auth_OpenID_Association $association The Association to store.
*/
function storeAssociation($server_url, $association)
{
trigger_error("Auth_OpenID_OpenIDStore::storeAssociation not implemented", E_USER_ERROR);
}
/**
* Remove expired nonces from the store.
*
* Discards any nonce from storage that is old enough that its
* timestamp would not pass useNonce().
*
* This method is not called in the normal operation of the
* library. It provides a way for store admins to keep their
* storage from filling up with expired data.
*
* @return int the number of nonces expired
*/
function cleanupNonces()
{
trigger_error("Auth_OpenID_OpenIDStore::cleanupNonces not implemented", E_USER_ERROR);
return 0;
}
/**
* Remove expired associations from the store.
*
* This method is not called in the normal operation of the
* library. It provides a way for store admins to keep their
* storage from filling up with expired data.
*
* @return int the number of associations expired.
*/
function cleanupAssociations()
{
trigger_error("Auth_OpenID_OpenIDStore::cleanupAssociations not implemented", E_USER_ERROR);
return 0;
}
/**
* Shortcut for cleanupNonces(), cleanupAssociations().
*
* This method is not called in the normal operation of the
* library. It provides a way for store admins to keep their
* storage from filling up with expired data.
* @return array
*/
function cleanup()
{
return array($this->cleanupNonces(), $this->cleanupAssociations());
}
/**
* Report whether this storage supports cleanup
*/
function supportsCleanup()
{
return true;
}
/**
* This method returns an Association object from storage that
* matches the server URL and, if specified, handle. It returns
* null if no such association is found or if the matching
* association is expired.
*
* If no handle is specified, the store may return any association
* which matches the server URL. If multiple associations are
* valid, the recommended return value for this method is the one
* most recently issued.
*
* This method is allowed (and encouraged) to garbage collect
* expired associations when found. This method must not return
* expired associations.
*
* @param string $server_url The URL of the identity server to get
* the association for. Because of the way the server portion of
* the library uses this interface, don't assume there are any
* limitations on the character set of the input string. In
* particular, expect to see unescaped non-url-safe characters in
* the server_url field.
*
* @param mixed $handle This optional parameter is the handle of
* the specific association to get. If no specific handle is
* provided, any valid association matching the server URL is
* returned.
*
* @return Auth_OpenID_Association The Association for the given identity server.
*/
function getAssociation($server_url, $handle = null)
{
trigger_error("Auth_OpenID_OpenIDStore::getAssociation not implemented", E_USER_ERROR);
return null;
}
/**
* This method removes the matching association if it's found, and
* returns whether the association was removed or not.
*
* @param string $server_url The URL of the identity server the
* association to remove belongs to. Because of the way the server
* portion of the library uses this interface, don't assume there
* are any limitations on the character set of the input
* string. In particular, expect to see unescaped non-url-safe
* characters in the server_url field.
*
* @param string $handle This is the handle of the association to
* remove. If there isn't an association found that matches both
* the given URL and handle, then there was no matching handle
* found.
*
* @return mixed Returns whether or not the given association existed.
*/
function removeAssociation($server_url, $handle)
{
trigger_error("Auth_OpenID_OpenIDStore::removeAssociation not implemented", E_USER_ERROR);
return null;
}
/**
* Called when using a nonce.
*
* This method should return C{True} if the nonce has not been
* used before, and store it for a while to make sure nobody
* tries to use the same value again. If the nonce has already
* been used, return C{False}.
*
* Change: In earlier versions, round-trip nonces were used and a
* nonce was only valid if it had been previously stored with
* storeNonce. Version 2.0 uses one-way nonces, requiring a
* different implementation here that does not depend on a
* storeNonce call. (storeNonce is no longer part of the
* interface.
*
* @param string $server_url
* @param int $timestamp
* @param string $salt
* @return bool Whether or not the nonce was valid.
*/
function useNonce($server_url, $timestamp, $salt)
{
trigger_error("Auth_OpenID_OpenIDStore::useNonce not implemented", E_USER_ERROR);
return false;
}
/**
* Removes all entries from the store; implementation is optional.
*/
function reset()
{
}
}
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