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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   * Set password form definition.
  19   *
  20   * @package    core
  21   * @subpackage auth
  22   * @copyright  2006 Petr Skoda {@link http://skodak.org}
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  require_once($CFG->libdir.'/formslib.php');
  29  require_once($CFG->dirroot.'/user/lib.php');
  30  
  31  /**
  32   * Set forgotten password form definition.
  33   *
  34   * @package    core
  35   * @subpackage auth
  36   * @copyright  2006 Petr Skoda {@link http://skodak.org}
  37   * @copyright  2013 Peter Bulmer
  38   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  39   */
  40  class login_set_password_form extends moodleform {
  41  
  42      /**
  43       * Define the set password form.
  44       */
  45      public function definition() {
  46          global $CFG;
  47          // Prepare a string showing whether the site wants login password autocompletion to be available to user.
  48          if (empty($CFG->loginpasswordautocomplete)) {
  49              $autocomplete = 'autocomplete="on"';
  50          } else {
  51              $autocomplete = '';
  52          }
  53  
  54          $mform = $this->_form;
  55          $mform->setDisableShortforms(true);
  56          $mform->addElement('header', 'setpassword', get_string('setpassword'), '');
  57  
  58          // Include the username in the form so browsers will recognise that a password is being set.
  59          $mform->addElement('text', 'username', '', 'style="display: none;" ' . $autocomplete);
  60          $mform->setType('username', PARAM_RAW);
  61          // Token gives authority to change password.
  62          $mform->addElement('hidden', 'token', '');
  63          $mform->setType('token', PARAM_ALPHANUM);
  64  
  65          // Visible elements.
  66          $mform->addElement('static', 'username2', get_string('username'));
  67  
  68          $policies = array();
  69          if (!empty($CFG->passwordpolicy)) {
  70              $policies[] = print_password_policy();
  71          }
  72          if (!empty($CFG->passwordreuselimit) and $CFG->passwordreuselimit > 0) {
  73              $policies[] = get_string('informminpasswordreuselimit', 'auth', $CFG->passwordreuselimit);
  74          }
  75          if ($policies) {
  76              $mform->addElement('static', 'passwordpolicyinfo', '', implode('<br />', $policies));
  77          }
  78          $mform->addElement('password', 'password', get_string('newpassword'), $autocomplete);
  79          $mform->addRule('password', get_string('required'), 'required', null, 'client');
  80          $mform->setType('password', PARAM_RAW);
  81  
  82          $strpasswordagain = get_string('newpassword') . ' (' . get_string('again') . ')';
  83          $mform->addElement('password', 'password2', $strpasswordagain, $autocomplete);
  84          $mform->addRule('password2', get_string('required'), 'required', null, 'client');
  85          $mform->setType('password2', PARAM_RAW);
  86  
  87          $this->add_action_buttons(true);
  88      }
  89  
  90      /**
  91       * Perform extra password change validation.
  92       * @param array $data submitted form fields.
  93       * @param array $files submitted with the form.
  94       * @return array errors occuring during validation.
  95       */
  96      public function validation($data, $files) {
  97          $user = $this->_customdata;
  98  
  99          $errors = parent::validation($data, $files);
 100  
 101          // Ignore submitted username.
 102          if ($data['password'] !== $data['password2']) {
 103              $errors['password'] = get_string('passwordsdiffer');
 104              $errors['password2'] = get_string('passwordsdiffer');
 105              return $errors;
 106          }
 107  
 108          $errmsg = ''; // Prevents eclipse warnings.
 109          if (!check_password_policy($data['password'], $errmsg)) {
 110              $errors['password'] = $errmsg;
 111              $errors['password2'] = $errmsg;
 112              return $errors;
 113          }
 114  
 115          if (user_is_previously_used_password($user->id, $data['password'])) {
 116              $errors['password'] = get_string('errorpasswordreused', 'core_auth');
 117              $errors['password2'] = get_string('errorpasswordreused', 'core_auth');
 118          }
 119  
 120          return $errors;
 121      }
 122  }