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1 <?php 2 // This file is part of Moodle - http://moodle.org/ 3 // 4 // Moodle is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // Moodle is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License 15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>. 16 // 17 // This file is part of BasicLTI4Moodle 18 // 19 // BasicLTI4Moodle is an IMS BasicLTI (Basic Learning Tools for Interoperability) 20 // consumer for Moodle 1.9 and Moodle 2.0. BasicLTI is a IMS Standard that allows web 21 // based learning tools to be easily integrated in LMS as native ones. The IMS BasicLTI 22 // specification is part of the IMS standard Common Cartridge 1.1 Sakai and other main LMS 23 // are already supporting or going to support BasicLTI. This project Implements the consumer 24 // for Moodle. Moodle is a Free Open source Learning Management System by Martin Dougiamas. 25 // BasicLTI4Moodle is a project iniciated and leaded by Ludo(Marc Alier) and Jordi Piguillem 26 // at the GESSI research group at UPC. 27 // SimpleLTI consumer for Moodle is an implementation of the early specification of LTI 28 // by Charles Severance (Dr Chuck) htp://dr-chuck.com , developed by Jordi Piguillem in a 29 // Google Summer of Code 2008 project co-mentored by Charles Severance and Marc Alier. 30 // 31 // BasicLTI4Moodle is copyright 2009 by Marc Alier Forment, Jordi Piguillem and Nikolas Galanis 32 // of the Universitat Politecnica de Catalunya http://www.upc.edu 33 // Contact info: Marc Alier Forment granludo @ gmail.com or marc.alier @ upc.edu. 34 35 /** 36 * This file contains a Trivial memory-based store - no support for tokens 37 * 38 * @package mod_lti 39 * @copyright IMS Global Learning Consortium 40 * 41 * @author Charles Severance csev@umich.edu 42 * 43 * @license http://www.apache.org/licenses/LICENSE-2.0 44 */ 45 46 namespace moodle\mod\lti; // Using a namespace as the basicLTI module imports classes with the same names. 47 48 defined('MOODLE_INTERNAL') || die; 49 50 /** 51 * A Trivial memory-based store - no support for tokens. 52 */ 53 class TrivialOAuthDataStore extends OAuthDataStore { 54 55 /** @var array $consumers Array of tool consumer keys and secrets */ 56 private $consumers = array(); 57 58 /** 59 * Add a consumer to the array 60 * 61 * @param string $consumerkey Consumer key 62 * @param string $consumersecret Consumer secret 63 */ 64 public function add_consumer($consumerkey, $consumersecret) { 65 $this->consumers[$consumerkey] = $consumersecret; 66 } 67 68 /** 69 * Get OAuth consumer given its key 70 * 71 * @param string $consumerkey Consumer key 72 * 73 * @return moodle\mod\lti\OAuthConsumer OAuthConsumer object 74 */ 75 public function lookup_consumer($consumerkey) { 76 if (strpos($consumerkey, "http://" ) === 0) { 77 $consumer = new OAuthConsumer($consumerkey, "secret", null); 78 return $consumer; 79 } 80 if ( $this->consumers[$consumerkey] ) { 81 $consumer = new OAuthConsumer($consumerkey, $this->consumers[$consumerkey], null); 82 return $consumer; 83 } 84 return null; 85 } 86 87 /** 88 * Create a dummy OAuthToken object for a consumer 89 * 90 * @param moodle\mod\lti\OAuthConsumer $consumer Consumer 91 * @param string $tokentype Type of token 92 * @param string $token Token ID 93 * 94 * @return moodle\mod\lti\OAuthToken OAuthToken object 95 */ 96 public function lookup_token($consumer, $tokentype, $token) { 97 return new OAuthToken($consumer, ''); 98 } 99 100 /** 101 * Nonce values are not checked so just return a null 102 * 103 * @param moodle\mod\lti\OAuthConsumer $consumer Consumer 104 * @param string $token Token ID 105 * @param string $nonce Nonce value 106 * @param string $timestamp Timestamp 107 * 108 * @return null 109 */ 110 public function lookup_nonce($consumer, $token, $nonce, $timestamp) { 111 // Should add some clever logic to keep nonces from 112 // being reused - for now we are really trusting 113 // that the timestamp will save us. 114 return null; 115 } 116 117 /** 118 * Tokens are not used so just return a null. 119 * 120 * @param moodle\mod\lti\OAuthConsumer $consumer Consumer 121 * 122 * @return null 123 */ 124 public function new_request_token($consumer) { 125 return null; 126 } 127 128 /** 129 * Tokens are not used so just return a null. 130 * 131 * @param string $token Token ID 132 * @param moodle\mod\lti\OAuthConsumer $consumer Consumer 133 * 134 * @return null 135 */ 136 public function new_access_token($token, $consumer) { 137 return null; 138 } 139 }
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