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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  namespace mod_bigbluebuttonbn\form;
  18  defined('MOODLE_INTERNAL') || die;
  19  global $CFG;
  20  require_once($CFG->libdir . '/formslib.php');
  21  
  22  /**
  23   * Guest login form.
  24   *
  25   * @package   mod_bigbluebuttonbn
  26   * @copyright 2022 onwards, Blindside Networks Inc
  27   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  28   * @author    Laurent David  (laurent [at] call-learning [dt] fr)
  29   */
  30  class guest_login extends \moodleform {
  31  
  32      /**
  33       * Form definition
  34       */
  35      protected function definition() {
  36          global $USER;
  37  
  38          $mform = $this->_form;
  39          $mform->addElement('text', 'username',
  40              get_string('guestaccess_username', 'mod_bigbluebuttonbn'));
  41          $mform->setType('username', PARAM_NOTAGS);
  42          $mform->addRule('username',
  43              get_string('required'), 'required', null, 'client');
  44  
  45          if (isloggedin() && !isguestuser()) {
  46              $mform->setConstant('username', fullname($USER));
  47              $mform->freeze('username');
  48          }
  49  
  50          $mform->addElement('password', 'password',
  51              get_string('guestaccess_password', 'mod_bigbluebuttonbn'));
  52          $mform->setType('password', PARAM_RAW);
  53          $mform->addRule('password',
  54              get_string('required'), 'required', null, 'client');
  55          $mform->addElement('hidden', 'uid', $this->_customdata['uid']);
  56          $mform->setType('uid', PARAM_ALPHANUMEXT);
  57  
  58          $this->add_action_buttons(false, get_string('guestaccess_join_meeting', 'mod_bigbluebuttonbn'));
  59      }
  60  
  61      /**
  62       * Validate form
  63       *
  64       * @param array $data
  65       * @param array $files
  66       * @return array
  67       * @throws \coding_exception
  68       */
  69      public function validation($data, $files): array {
  70          $errors = parent::validation($data, $files);
  71          $instance = $this->_customdata['instance'];
  72          if ($data['password'] != $instance->get_guest_access_password()) {
  73              $errors['password'] = get_string('guestaccess_meeting_invalid_password', 'mod_bigbluebuttonbn');
  74          }
  75          return $errors;
  76      }
  77  }
  78