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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   * Nologin authentication login - prevents user login.
  19   *
  20   * @package auth_nologin
  21   * @author Petr Skoda
  22   * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
  23   */
  24  
  25  defined('MOODLE_INTERNAL') || die();
  26  
  27  require_once($CFG->libdir.'/authlib.php');
  28  
  29  /**
  30   * Plugin for no authentication - disabled user.
  31   */
  32  class auth_plugin_nologin extends auth_plugin_base {
  33  
  34  
  35      /**
  36       * Constructor.
  37       */
  38      function auth_plugin_nologin() {
  39          $this->authtype = 'nologin';
  40      }
  41  
  42      /**
  43       * Do not allow any login.
  44       *
  45       */
  46      function user_login($username, $password) {
  47          return false;
  48      }
  49  
  50      /**
  51       * No password updates.
  52       */
  53      function user_update_password($user, $newpassword) {
  54          return false;
  55      }
  56  
  57      function prevent_local_passwords() {
  58          // just in case, we do not want to loose the passwords
  59          return false;
  60      }
  61  
  62      /**
  63       * No external data sync.
  64       *
  65       * @return bool
  66       */
  67      function is_internal() {
  68          //we do not know if it was internal or external originally
  69          return true;
  70      }
  71  
  72      /**
  73       * No changing of password.
  74       *
  75       * @return bool
  76       */
  77      function can_change_password() {
  78          return false;
  79      }
  80  
  81      /**
  82       * No password resetting.
  83       */
  84      function can_reset_password() {
  85          return false;
  86      }
  87  
  88      /**
  89       * Returns true if plugin can be manually set.
  90       *
  91       * @return bool
  92       */
  93      function can_be_manually_set() {
  94          return true;
  95      }
  96  }
  97  
  98