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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
//
// This file is part of BasicLTI4Moodle
//
// BasicLTI4Moodle is an IMS BasicLTI (Basic Learning Tools for Interoperability)
// consumer for Moodle 1.9 and Moodle 2.0. BasicLTI is a IMS Standard that allows web
// based learning tools to be easily integrated in LMS as native ones. The IMS BasicLTI
// specification is part of the IMS standard Common Cartridge 1.1 Sakai and other main LMS
// are already supporting or going to support BasicLTI. This project Implements the consumer
// for Moodle. Moodle is a Free Open source Learning Management System by Martin Dougiamas.
// BasicLTI4Moodle is a project iniciated and leaded by Ludo(Marc Alier) and Jordi Piguillem
// at the GESSI research group at UPC.
// SimpleLTI consumer for Moodle is an implementation of the early specification of LTI
// by Charles Severance (Dr Chuck) htp://dr-chuck.com , developed by Jordi Piguillem in a
// Google Summer of Code 2008 project co-mentored by Charles Severance and Marc Alier.
//
// BasicLTI4Moodle is copyright 2009 by Marc Alier Forment, Jordi Piguillem and Nikolas Galanis
// of the Universitat Politecnica de Catalunya http://www.upc.edu
// Contact info: Marc Alier Forment granludo @ gmail.com or marc.alier @ upc.edu.
/**
* This file contains a Trivial memory-based store - no support for tokens
*
* @package mod_lti
* @copyright IMS Global Learning Consortium
*
* @author Charles Severance csev@umich.edu
*
* @license http://www.apache.org/licenses/LICENSE-2.0
*/
namespace moodle\mod\lti; // Using a namespace as the basicLTI module imports classes with the same names.
defined('MOODLE_INTERNAL') || die;
/**
* A Trivial memory-based store - no support for tokens.
*/
class TrivialOAuthDataStore extends OAuthDataStore {
/** @var array $consumers Array of tool consumer keys and secrets */
private $consumers = array();
/**
* Add a consumer to the array
*
* @param string $consumerkey Consumer key
* @param string $consumersecret Consumer secret
*/
public function add_consumer($consumerkey, $consumersecret) {
$this->consumers[$consumerkey] = $consumersecret;
}
/**
* Get OAuth consumer given its key
*
* @param string $consumerkey Consumer key
*
* @return moodle\mod\lti\OAuthConsumer OAuthConsumer object
*/
public function lookup_consumer($consumerkey) {
if (strpos($consumerkey, "http://" ) === 0) {
$consumer = new OAuthConsumer($consumerkey, "secret", null);
return $consumer;
}
if ( $this->consumers[$consumerkey] ) {
$consumer = new OAuthConsumer($consumerkey, $this->consumers[$consumerkey], null);
return $consumer;
}
return null;
}
/**
* Create a dummy OAuthToken object for a consumer
*
* @param moodle\mod\lti\OAuthConsumer $consumer Consumer
* @param string $tokentype Type of token
* @param string $token Token ID
*
* @return moodle\mod\lti\OAuthToken OAuthToken object
*/
public function lookup_token($consumer, $tokentype, $token) {
return new OAuthToken($consumer, '');
}
/**
* Nonce values are not checked so just return a null
*
* @param moodle\mod\lti\OAuthConsumer $consumer Consumer
* @param string $token Token ID
* @param string $nonce Nonce value
* @param string $timestamp Timestamp
*
* @return null
*/
public function lookup_nonce($consumer, $token, $nonce, $timestamp) {
// Should add some clever logic to keep nonces from
// being reused - for now we are really trusting
// that the timestamp will save us.
return null;
}
/**
* Tokens are not used so just return a null.
*
* @param moodle\mod\lti\OAuthConsumer $consumer Consumer
*
* @return null
*/
public function new_request_token($consumer) {
return null;
}
/**
* Tokens are not used so just return a null.
*
* @param string $token Token ID
* @param moodle\mod\lti\OAuthConsumer $consumer Consumer
*
* @return null
*/
public function new_access_token($token, $consumer) {
return null;
}
}