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Differences Between: [Versions 310 and 403] [Versions 39 and 403]

   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   * Self enrol plugin implementation.
  19   *
  20   * @package    enrol_self
  21   * @copyright  2010 Petr Skoda  {@link http://skodak.org}
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  defined('MOODLE_INTERNAL') || die();
  26  
  27  require_once("$CFG->libdir/formslib.php");
  28  require_once($CFG->dirroot . '/enrol/locallib.php');
  29  
  30  /**
  31   * Check if the given password match a group enrolment key in the specified course.
  32   *
  33   * @param  int $courseid            course id
  34   * @param  string $enrolpassword    enrolment password
  35   * @return bool                     True if match
  36   * @since  Moodle 3.0
  37   */
  38  function enrol_self_check_group_enrolment_key($courseid, $enrolpassword) {
  39      global $DB;
  40  
  41      $found = false;
  42      $groups = $DB->get_records('groups', array('courseid' => $courseid), 'id ASC', 'id, enrolmentkey');
  43  
  44      foreach ($groups as $group) {
  45          if (empty($group->enrolmentkey)) {
  46              continue;
  47          }
  48          if ($group->enrolmentkey === $enrolpassword) {
  49              $found = true;
  50              break;
  51          }
  52      }
  53      return $found;
  54  }
  55  
  56  class enrol_self_enrol_form extends moodleform {
  57      protected $instance;
  58      protected $toomany = false;
  59  
  60      /**
  61       * Overriding this function to get unique form id for multiple self enrolments.
  62       *
  63       * @return string form identifier
  64       */
  65      protected function get_form_identifier() {
  66          $formid = $this->_customdata->id.'_'.get_class($this);
  67          return $formid;
  68      }
  69  
  70      public function definition() {
  71          global $USER, $OUTPUT, $CFG;
  72          $mform = $this->_form;
  73          $instance = $this->_customdata;
  74          $this->instance = $instance;
  75          $plugin = enrol_get_plugin('self');
  76  
  77          $heading = $plugin->get_instance_name($instance);
  78          $mform->addElement('header', 'selfheader', $heading);
  79  
  80          if ($instance->password) {
  81              // Change the id of self enrolment key input as there can be multiple self enrolment methods.
  82              $mform->addElement('password', 'enrolpassword', get_string('password', 'enrol_self'),
  83                      array('id' => 'enrolpassword_'.$instance->id));
  84              $context = context_course::instance($this->instance->courseid);
  85              $userfieldsapi = \core_user\fields::for_userpic();
  86              $ufields = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
  87              $keyholders = get_users_by_capability($context, 'enrol/self:holdkey', $ufields);
  88              $keyholdercount = 0;
  89              foreach ($keyholders as $keyholder) {
  90                  $keyholdercount++;
  91                  if ($keyholdercount === 1) {
  92                      $mform->addElement('static', 'keyholder', '', get_string('keyholder', 'enrol_self'));
  93                  }
  94                  $keyholdercontext = context_user::instance($keyholder->id);
  95                  if ($USER->id == $keyholder->id || has_capability('moodle/user:viewdetails', context_system::instance()) ||
  96                          has_coursecontact_role($keyholder->id)) {
  97                      $profilelink = '<a href="' . $CFG->wwwroot . '/user/view.php?id=' . $keyholder->id . '&amp;course=' .
  98                      $this->instance->courseid . '">' . fullname($keyholder) . '</a>';
  99                  } else {
 100                      $profilelink = fullname($keyholder);
 101                  }
 102                  $profilepic = $OUTPUT->user_picture($keyholder, array('size' => 35, 'courseid' => $this->instance->courseid));
 103                  $mform->addElement('static', 'keyholder'.$keyholdercount, '', $profilepic . $profilelink);
 104              }
 105  
 106          } else {
 107              $mform->addElement('static', 'nokey', '', get_string('nopassword', 'enrol_self'));
 108          }
 109  
 110          $this->add_action_buttons(false, get_string('enrolme', 'enrol_self'));
 111  
 112          $mform->addElement('hidden', 'id');
 113          $mform->setType('id', PARAM_INT);
 114          $mform->setDefault('id', $instance->courseid);
 115  
 116          $mform->addElement('hidden', 'instance');
 117          $mform->setType('instance', PARAM_INT);
 118          $mform->setDefault('instance', $instance->id);
 119      }
 120  
 121      public function validation($data, $files) {
 122          global $DB, $CFG;
 123  
 124          $errors = parent::validation($data, $files);
 125          $instance = $this->instance;
 126  
 127          if ($this->toomany) {
 128              $errors['notice'] = get_string('error');
 129              return $errors;
 130          }
 131  
 132          if ($instance->password) {
 133              if ($data['enrolpassword'] !== $instance->password) {
 134                  if ($instance->customint1) {
 135                      // Check group enrolment key.
 136                      if (!enrol_self_check_group_enrolment_key($instance->courseid, $data['enrolpassword'])) {
 137                          // We can not hint because there are probably multiple passwords.
 138                          $errors['enrolpassword'] = get_string('passwordinvalid', 'enrol_self');
 139                      }
 140  
 141                  } else {
 142                      $plugin = enrol_get_plugin('self');
 143                      if ($plugin->get_config('showhint')) {
 144                          $hint = core_text::substr($instance->password, 0, 1);
 145                          $errors['enrolpassword'] = get_string('passwordinvalidhint', 'enrol_self', $hint);
 146                      } else {
 147                          $errors['enrolpassword'] = get_string('passwordinvalid', 'enrol_self');
 148                      }
 149                  }
 150              }
 151          }
 152  
 153          return $errors;
 154      }
 155  }