login/forgot_password.php

   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  * Forgot password routine.
  19  *
  20  * Finds the user and calls the appropriate routine for their authentication type.
  21  *
  22  * There are several pathways to/through this page, summarised below:
  23  * 1. User clicks the 'forgotten your username or password?' link on the login page.
  24  *  - No token is received, render the username/email search form.
  25  * 2. User clicks the link in the forgot password email
  26  *  - Token received as GET param, store the token in session, redirect to self
  27  * 3. Redirected from (2)
  28  *  - Fetch token from session, and continue to run the reset routine defined in 'core_login_process_password_set()'.
  29  *
  30  * @package    core
  31  * @subpackage auth
  32  * @copyright  1999 onwards Martin Dougiamas  http://dougiamas.com
  33  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  34  */
  35
  36 require('../config.php');
  37 require_once($CFG->libdir.'/authlib.php');
  38 require_once(__DIR__ . '/lib.php');
  39 require_once('forgot_password_form.php');
  40 require_once('set_password_form.php');
  41
  42 $token = optional_param('token', false, PARAM_ALPHANUM);
  43
  44 $PAGE->set_url('/login/forgot_password.php');
  45 $systemcontext = context_system::instance();
  46 $PAGE->set_context($systemcontext);
  47
  48 // setup text strings
  49 $strforgotten = get_string('passwordforgotten');
  50 $strlogin     = get_string('login');
  51
  52 $PAGE->navbar->add($strlogin, get_login_url());
  53 $PAGE->navbar->add($strforgotten);
  54 $PAGE->set_title($strforgotten);
  55 $PAGE->set_heading($COURSE->fullname);
  56
  57 // if alternatepasswordurl is defined, then we'll just head there
  58 if (!empty($CFG->forgottenpasswordurl)) {
  59     redirect($CFG->forgottenpasswordurl);
  60 }
  61
  62 // if you are logged in then you shouldn't be here!
  63 if (isloggedin() and !isguestuser()) {
  64     redirect($CFG->wwwroot.'/index.php', get_string('loginalready'), 5);
  65 }
  66
  67 // Fetch the token from the session, if present, and unset the session var immediately.
  68 $tokeninsession = false;
  69 if (!empty($SESSION->password_reset_token)) {
  70     $token = $SESSION->password_reset_token;
  71     unset($SESSION->password_reset_token);
  72     $tokeninsession = true;
  73 }
  74
  75 if (empty($token)) {
  76     // This is a new password reset request.
  77     // Process the request; identify the user & send confirmation email.
  78     core_login_process_password_reset_request();
  79 } else {
  80     // A token has been found, but not in the session, and not from a form post.
  81     // This must be the user following the original rest link, so store the reset token in the session and redirect to self.
  82     // The session var is intentionally used only during the lifespan of one request (the redirect) and is unset above.
  83     if (!$tokeninsession && $_SERVER['REQUEST_METHOD'] === 'GET') {
  84         $SESSION->password_reset_token = $token;
  85         redirect($CFG->wwwroot . '/login/forgot_password.php');
  86     } else {
  87         // Continue with the password reset process.
  88         core_login_process_password_set($token);
  89     }
  90 }