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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  /**
  18   * Handle the return from the Tool Provider after registering a tool proxy.
  19   *
  20   * @package mod_lti
  21   * @copyright  2015 Ryan Wyllie
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  require_once('../../config.php');
  26  require_once($CFG->dirroot.'/mod/lti/lib.php');
  27  require_once($CFG->dirroot.'/mod/lti/locallib.php');
  28  
  29  $status = optional_param('status', '', PARAM_TEXT);
  30  $msg = optional_param('lti_msg', '', PARAM_TEXT);
  31  $err = optional_param('lti_errormsg', '', PARAM_TEXT);
  32  $id = optional_param('id', 0, PARAM_INT);
  33  
  34  // No guest autologin.
  35  require_sesskey();
  36  require_login(0, false);
  37  
  38  $systemcontext = context_system::instance();
  39  require_capability('moodle/site:config', $systemcontext);
  40  
  41  $pageurl = new moodle_url('/mod/lti/externalregistrationreturn.php');
  42  $PAGE->set_context($systemcontext);
  43  $PAGE->set_url($pageurl);
  44  $PAGE->set_pagelayout('maintenance');
  45  $output = $PAGE->get_renderer('mod_lti');
  46  echo $output->header();
  47  
  48  // Check status and lti_errormsg.
  49  if ($status !== 'success' && empty($err)) {
  50      // We have a failed status and an empty lti_errormsg. Check if we can use lti_msg.
  51      if (!empty($msg)) {
  52          // The lti_msg attribute is set, use this as the error message.
  53          $err = $msg;
  54      } else {
  55          // Otherwise, use our generic error message.
  56          $err = get_string('failedtocreatetooltype', 'mod_lti');
  57      }
  58  }
  59  $params = array('message' => s($msg), 'error' => s($err), 'id' => $id, 'status' => s($status));
  60  
  61  $page = new \mod_lti\output\external_registration_return_page();
  62  echo $output->render($page);
  63  
  64  $PAGE->requires->js_call_amd('mod_lti/external_registration_return', 'init', $params);
  65  echo $output->footer();