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Merge pull request #43 from iconnewmedia-de/lti13
adds support for LTI version 1.3
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,189 @@ | ||
| <?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 responds to a login authentication request | ||
| * | ||
| * @package mod_lti | ||
| * @copyright 2019 Stephen Vickers | ||
| * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
| */ | ||
|
|
||
| require_once(__DIR__ . '/../../config.php'); | ||
| require_once($CFG->dirroot . '/mod/lti/locallib.php'); | ||
| require_once(__DIR__ . '/locallib.php'); | ||
| global $_POST, $_SERVER; | ||
| if (!isloggedin() && empty($_POST['repost'])) { | ||
| header_remove("Set-Cookie"); | ||
| $PAGE->set_pagelayout('popup'); | ||
| $PAGE->set_context(context_system::instance()); | ||
| $output = $PAGE->get_renderer('mod_lti'); | ||
| $page = new \mod_lti\output\repost_crosssite_page($_SERVER['REQUEST_URI'], $_POST); | ||
| echo $output->header(); | ||
| echo $output->render($page); | ||
| echo $output->footer(); | ||
| return; | ||
| } | ||
|
|
||
| $scope = optional_param('scope', '', PARAM_TEXT); | ||
| $responsetype = optional_param('response_type', '', PARAM_TEXT); | ||
| $clientid = optional_param('client_id', '', PARAM_TEXT); | ||
| $redirecturi = optional_param('redirect_uri', '', PARAM_URL); | ||
| $loginhint = optional_param('login_hint', '', PARAM_TEXT); | ||
| $ltimessagehintenc = optional_param('lti_message_hint', '', PARAM_TEXT); | ||
| $ltimessagehintenc = htmlspecialchars_decode(urldecode($ltimessagehintenc)); | ||
| $state = optional_param('state', '', PARAM_TEXT); | ||
| $responsemode = optional_param('response_mode', '', PARAM_TEXT); | ||
| $nonce = optional_param('nonce', '', PARAM_TEXT); | ||
| $prompt = optional_param('prompt', '', PARAM_TEXT); | ||
| $typeid = block_onlinesurvey_get_lti_typeid(); | ||
|
|
||
| $ok = !empty($scope) && !empty($responsetype) && !empty($clientid) && | ||
| !empty($redirecturi) && !empty($loginhint) && | ||
| !empty($nonce); | ||
|
|
||
| if (!$ok) { | ||
| $error = 'invalid_request'; | ||
| } | ||
| $ltimessagehint = json_decode($ltimessagehintenc); | ||
| $ok = $ok && isset($ltimessagehint->launchid); | ||
| if (!$ok) { | ||
| $error = 'invalid_request'; | ||
| $desc = 'No launch id in LTI hint'; | ||
| } | ||
| if ($ok && ($scope !== 'openid')) { | ||
| $ok = false; | ||
| $error = 'invalid_scope'; | ||
| } | ||
| if ($ok && ($responsetype !== 'id_token')) { | ||
| $ok = false; | ||
| $error = 'unsupported_response_type'; | ||
| } | ||
| if ($ok) { | ||
| $launchid = $ltimessagehint->launchid; | ||
| list($messagetype, $foruserid, $titleb64, $textb64) = explode(',', $SESSION->$launchid, 7); | ||
| unset($SESSION->$launchid); | ||
| $config = lti_get_type_type_config($typeid); | ||
| $ok = ($clientid === $config->lti_clientid); | ||
| if (!$ok) { | ||
| $error = 'unauthorized_client'; | ||
| } | ||
| } | ||
| if ($ok && ($loginhint !== $USER->id)) { | ||
| $ok = false; | ||
| $error = 'access_denied'; | ||
| } | ||
|
|
||
| // If we're unable to load up config; we cannot trust the redirect uri for POSTing to. | ||
| if (empty($config)) { | ||
| throw new moodle_exception('invalidrequest', 'error'); | ||
| } else { | ||
| $uris = array_map("trim", explode("\n", $config->lti_redirectionuris)); | ||
| if (!in_array($redirecturi, $uris)) { | ||
| throw new moodle_exception('invalidrequest', 'error'); | ||
| } | ||
| } | ||
| if ($ok) { | ||
| if (isset($responsemode)) { | ||
| $ok = ($responsemode === 'form_post'); | ||
| if (!$ok) { | ||
| $error = 'invalid_request'; | ||
| $desc = 'Invalid response_mode'; | ||
| } | ||
| } else { | ||
| $ok = false; | ||
| $error = 'invalid_request'; | ||
| $desc = 'Missing response_mode'; | ||
| } | ||
| } | ||
| if ($ok && !empty($prompt) && ($prompt !== 'none')) { | ||
| $ok = false; | ||
| $error = 'invalid_request'; | ||
| $desc = 'Invalid prompt'; | ||
| } | ||
| if (isset($state)) { | ||
| $SESSION->lti_state = $state; | ||
| } else { | ||
| $state = $SESSION->lti_state; | ||
| } | ||
| if ($ok) { | ||
| $config = get_config('block_onlinesurvey'); | ||
| require_login(); | ||
| $context = context_system::instance(); | ||
| $lti = get_config('block_onlinesurvey'); | ||
| list($endpoint, $params) = block_onlinesurvey_lti_get_launch_data($lti, $nonce, $messagetype, $foruserid); | ||
| $params['state'] = $state; | ||
| setcookie('state', $state, ['samesite' => 'None']); | ||
| setcookie('lti1p3_' . $state, $state, ['samesite' => 'None', 'path' => '/']); | ||
| } else { | ||
| $params['error'] = $error; | ||
| if (!empty($desc)) { | ||
| $params['error_description'] = $desc; | ||
| } | ||
| } | ||
|
|
||
| $params['lti1p3_' . $SESSION->lti_state] = $SESSION->lti_state; | ||
| if (isset($SESSION->lti_state)) { | ||
| setcookie('lti1p3_' . $SESSION->lti_state, $SESSION->lti_state); | ||
| block_onlinesurvey_remove_outdated_cookies($SESSION->lti_state); | ||
| } | ||
| unset($SESSION->lti_message_hint); | ||
| $config = block_onlinesurvey_get_launch_config(); | ||
| $return = block_onlinesurvey_lti_post_launch_html_curl($params, $redirecturi, $config); | ||
| if ($config->presentation == BLOCK_ONLINESURVEY_PRESENTATION_BRIEF) { | ||
| if (isset($SESSION->modalzoom)) { | ||
| $modalzoom = $SESSION->modalzoom; | ||
| unset($SESSION->modalzoom); | ||
| } else { | ||
| $modalzoom = optional_param('modalZoom', 0, PARAM_INT); | ||
| } | ||
| if (!$modalzoom) { | ||
| $return = block_onlinesurvey_get_summary($return, $config, $modalzoom, $foruserid); | ||
| $return .= '<link rel="stylesheet" href="' . $CFG->wwwroot . '/blocks/onlinesurvey/style/block_onlinesurvey_iframe_compact.css">'; | ||
| $return .= '<link rel="stylesheet" href="' . $CFG->wwwroot . '/blocks/onlinesurvey/lib/fonts/font-awesome-4.7.0/css/font-awesome.min.css">'; | ||
| } | ||
| } | ||
| if ($modalzoom || $config->presentation != BLOCK_ONLINESURVEY_PRESENTATION_BRIEF) { | ||
| $pathinfo = pathinfo($config->lti_url); | ||
| $base = $pathinfo['dirname']; | ||
| if (strpos($return, '<head>') !== false) { | ||
| $return = str_replace('<head>', '<head><base href="' . $base . '/" />', $return); | ||
| } else { | ||
| $return = str_replace('<html>', '<html><head><base href="' . $base . '/" /></head>', $return); | ||
| } | ||
| $return .= '<script> | ||
| // make iframe height match its content | ||
| var block_onlinesurvey_iframe_height = document.documentElement.offsetHeight + 40; | ||
| window.parent.parent.document.getElementById(\'block_onlinesurvey_contentframe\').style.height = block_onlinesurvey_iframe_height + \'px\'; | ||
| </script>'; | ||
| } | ||
| echo $return; | ||
| //$r = '<form action="' . $redirecturi . "\" name=\"ltiAuthForm\" id=\"ltiAuthForm\" " . | ||
| // "method=\"post\" enctype=\"application/x-www-form-urlencoded\">\n"; | ||
| //if (!empty($params)) { | ||
| // foreach ($params as $key => $value) { | ||
| // $key = htmlspecialchars($key, ENT_COMPAT); | ||
| // $value = htmlspecialchars($value, ENT_COMPAT); | ||
| // $r .= " <input type=\"hidden\" name=\"{$key}\" value=\"{$value}\"/>\n"; | ||
| // } | ||
| //} | ||
| //$r .= "</form>\n"; | ||
| //$r .= "<script type=\"text/javascript\">\n" . | ||
| // "//<![CDATA[\n" . | ||
| // "document.ltiAuthForm.submit();\n" . | ||
| // "//]]>\n" . | ||
| // "</script>\n"; | ||
| //echo $r; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| <?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 returns an array of available public keys | ||
| * | ||
| * @package mod_lti | ||
| * @copyright 2019 Stephen Vickers | ||
| * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
| */ | ||
| use block_onlinesurvey\local\ltiopenid\jwks_helper; | ||
|
|
||
| define('NO_DEBUG_DISPLAY', true); | ||
| define('NO_MOODLE_COOKIES', true); | ||
|
|
||
| require_once(__DIR__ . '/../../config.php'); | ||
| require_once(__DIR__ . '/classes/local/ltiopenid/jwks_helper.php'); | ||
|
|
||
| @header('Content-Type: application/json; charset=utf-8'); | ||
| try { | ||
| $jwks = jwks_helper::get_jwks(); | ||
| $json = json_encode($jwks, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT); | ||
| echo $json; | ||
| } catch(Exception $e) { | ||
| // nothing here yet | ||
| } |
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