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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   * Guest access implementation
  19   *
  20   * @package   mod_bigbluebuttonbn
  21   * @copyright 2022 onwards, Blindside Networks Inc
  22   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   * @author    Laurent David  (laurent [at] call-learning [dt] fr)
  24   */
  25  
  26  use mod_bigbluebuttonbn\form\guest_login;
  27  use mod_bigbluebuttonbn\local\exceptions\server_not_available_exception;
  28  use mod_bigbluebuttonbn\local\proxy\bigbluebutton_proxy;
  29  use mod_bigbluebuttonbn\meeting;
  30  use mod_bigbluebuttonbn\plugin;
  31  
  32  require(__DIR__.'/../../config.php');
  33  global $PAGE, $OUTPUT, $DB, $SITE;
  34  // Note here that we do not use require_login as the $CFG->forcelogin would prevent guest user from accessing this page.
  35  $PAGE->set_course($SITE); // Intialise the page and run through the setup.
  36  $uid = required_param('uid', PARAM_ALPHANUMEXT);
  37  
  38  $bbid = $DB->get_field('bigbluebuttonbn', 'id', ['guestlinkuid' => trim($uid)]);
  39  if (empty($bbid)) {
  40      throw new moodle_exception('guestaccess_activitynotfound', 'mod_bigbluebuttonbn');
  41  }
  42  $instance = \mod_bigbluebuttonbn\instance::get_from_instanceid($bbid);
  43  // Prevent access to this page if the guest access has been disabled on this instance.
  44  if (!$instance->is_guest_allowed()) {
  45      throw new moodle_exception('guestaccess_feature_disabled', 'mod_bigbluebuttonbn');
  46  }
  47  
  48  // Get the guest matching guest access link.
  49  $PAGE->set_url('/mod/bigbluebuttonbn/guest.php', ['uid' => $uid]);
  50  $title = $instance->get_course()->shortname . ': ' . format_string($instance->get_meeting_name());
  51  $PAGE->set_title($title);
  52  $PAGE->set_heading($title);
  53  $PAGE->set_pagelayout('standard');
  54  $form = new guest_login(null, ['uid' => $uid, 'instance' => $instance]);
  55  // Specific for the tests: we allow to set the password in the form here.
  56  if (defined('BEHAT_SITE_RUNNING')) {
  57      $form->set_data(['password' => optional_param('password', '', PARAM_RAW)]);
  58  }
  59  
  60  if ($data = $form->get_data()) {
  61      $username = $data->username;
  62      try {
  63          $meeting = new meeting($instance);
  64          // As the meeting doesn't exist, we raise an exception.
  65          if (!empty($meeting->get_meeting_info()->createtime)) {
  66              $url = $meeting->get_guest_join_url($username);
  67              redirect($url);
  68          } else {
  69              \core\notification::add(
  70                  get_string('guestaccess_meeting_not_started', 'mod_bigbluebuttonbn'),
  71                  \core\output\notification::NOTIFY_ERROR
  72              );
  73          }
  74      } catch (server_not_available_exception $e) {
  75          bigbluebutton_proxy::handle_server_not_available($instance);
  76      }
  77  }
  78  echo $OUTPUT->header();
  79  echo $form->render();
  80  echo $OUTPUT->footer();