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Long Term Support Release
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 /** 18 * This file contains a controller for receiving LTI service requests 19 * 20 * @package mod_lti 21 * @copyright 2014 Vital Source Technologies http://vitalsource.com 22 * @author Stephen Vickers 23 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 24 */ 25 26 define('NO_DEBUG_DISPLAY', true); 27 define('NO_MOODLE_COOKIES', true); 28 29 require_once(__DIR__ . '/../../config.php'); 30 require_once($CFG->dirroot . '/mod/lti/locallib.php'); 31 32 33 $response = new \mod_lti\local\ltiservice\response(); 34 35 $isget = $response->get_request_method() === mod_lti\local\ltiservice\resource_base::HTTP_GET; 36 $isdelete = $response->get_request_method() === mod_lti\local\ltiservice\resource_base::HTTP_DELETE; 37 38 if ($isget) { 39 $response->set_accept(isset($_SERVER['HTTP_ACCEPT']) ? $_SERVER['HTTP_ACCEPT'] : ''); 40 } else { 41 $response->set_content_type(isset($_SERVER['CONTENT_TYPE']) ? explode(';', $_SERVER['CONTENT_TYPE'], 2)[0] : ''); 42 } 43 44 $ok = false; 45 $path = isset($_SERVER['PATH_INFO']) ? $_SERVER['PATH_INFO'] : ''; 46 47 $accept = $response->get_accept(); 48 $contenttype = $response->get_content_type(); 49 50 $services = lti_get_services(); 51 foreach ($services as $service) { 52 $resources = $service->get_resources(); 53 foreach ($resources as $resource) { 54 if (($isget && !empty($accept) && (strpos($accept, '*/*') === false) && 55 !in_array($accept, $resource->get_formats())) || 56 ((!$isget && !$isdelete) && !in_array($contenttype, $resource->get_formats()))) { 57 continue; 58 } 59 $template = $resource->get_template(); 60 $template = preg_replace('/{config_type}/', '(toolproxy|tool)', $template); 61 $template = preg_replace('/\{[a-zA-Z_]+\}/', '[^/]+', $template); 62 $template = preg_replace('/\(([0-9a-zA-Z_\-,\/]+)\)/', '(\\1|)', $template); 63 $template = str_replace('/', '\/', $template); 64 if (preg_match("/^{$template}$/", $path) === 1) { 65 $ok = true; 66 break 2; 67 } 68 } 69 } 70 if (!$ok) { 71 $response->set_code(400); 72 $response->set_reason("No handler found for {$path} {$accept} {$contenttype}"); 73 } else { 74 $body = file_get_contents('php://input'); 75 $response->set_request_data($body); 76 if (in_array($response->get_request_method(), $resource->get_methods())) { 77 $resource->execute($response); 78 } else { 79 $response->set_code(405); 80 } 81 } 82 $response->send();
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