blocks/login/block_login.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  * Login block
  19  *
  20  * @package   block_login
  21  * @copyright 1999 onwards Martin Dougiamas  {@link http://moodle.com}
  22  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 class block_login extends block_base {
  26     function init() {
  27         $this->title = get_string('pluginname', 'block_login');
  28     }
  29
  30     function applicable_formats() {
  31         return array('site' => true);
  32     }
  33
  34     function get_content() {
  35         global $USER, $CFG, $SESSION, $OUTPUT;
  36         require_once($CFG->libdir . '/authlib.php');
  37
  38         $wwwroot = '';
  39         $signup = '';
  40
  41         if ($this->content !== NULL) {
  42             return $this->content;
  43         }
  44
  45         $wwwroot = $CFG->wwwroot;
  46
  47         if (signup_is_enabled()) {
  48             $signup = $wwwroot . '/login/signup.php';
  49         }
  50         // TODO: now that we have multiauth it is hard to find out if there is a way to change password
  51         $forgot = $wwwroot . '/login/forgot_password.php';
  52
  53
  54         $username = get_moodle_cookie();
  55
  56         $this->content = new stdClass();
  57         $this->content->footer = '';
  58         $this->content->text = '';
  59
  60         if (!isloggedin() or isguestuser()) {   // Show the block
  61             if (empty($CFG->authloginviaemail)) {
  62                 $strusername = get_string('username');
  63             } else {
  64                 $strusername = get_string('usernameemail');
  65             }
  66
  67             $this->content->text .= "\n".'<form class="loginform" id="login" method="post" action="'.get_login_url().'">';
  68
  69             $this->content->text .= '<div class="mb-3">';
  70             $this->content->text .= '<label for="login_username">'.$strusername.'</label>';
  71             $this->content->text .= '<input type="text" name="username" id="login_username" ';
  72             $this->content->text .= ' class="form-control" value="'.s($username).'" autocomplete="username"/></div>';
  73
  74             $this->content->text .= '<div class="mb-3"><label for="login_password">'.get_string('password').'</label>';
  75
  76             $this->content->text .= '<input type="password" name="password" id="login_password" ';
  77             $this->content->text .= ' class="form-control" value="" autocomplete="current-password"/>';
  78             $this->content->text .= '</div>';
  79
  80             // ReCaptcha.
  81             if (login_captcha_enabled()) {
  82                 require_once($CFG->libdir . '/recaptchalib_v2.php');
  83                 $this->content->text .= '<div class="mb-3">';
  84                 $this->content->text .= recaptcha_get_challenge_html(RECAPTCHA_API_URL, $CFG->recaptchapublickey,
  85                     current_language(), true);
  86                 $this->content->text .= '</div>';
  87             }
  88
  89             $this->content->text .= '<div class="mb-3">';
  90             $this->content->text .= '<input type="submit" class="btn btn-primary btn-block" value="'.get_string('login').'" />';
  91             $this->content->text .= '</div>';
  92             $this->content->text .= '<input type="hidden" name="logintoken" value="'.s(\core\session\manager::get_login_token()).'" />';
  93
  94             $this->content->text .= "</form>\n";
  95
  96             if (!empty($signup)) {
  97                 $this->content->text .= '<div><a href="'.$signup.'">'.get_string('startsignup').'</a></div>';
  98             }
  99             if (!empty($forgot)) {
 100                 $this->content->text .= '<div><a href="'.$forgot.'">'.get_string('forgotaccount').'</a></div>';
 101             }
 102
 103             $authsequence = get_enabled_auth_plugins(); // Get all auths, in sequence.
 104             $potentialidps = array();
 105             foreach ($authsequence as $authname) {
 106                 $authplugin = get_auth_plugin($authname);
 107                 $potentialidps = array_merge($potentialidps, $authplugin->loginpage_idp_list($this->page->url->out(false)));
 108             }
 109
 110             if (!empty($potentialidps)) {
 111                 $this->content->text .= '<div class="potentialidps">';
 112                 $this->content->text .= '<h6>' . get_string('potentialidps', 'auth') . '</h6>';
 113                 $this->content->text .= '<div class="potentialidplist">';
 114                 foreach ($potentialidps as $idp) {
 115                     $this->content->text .= '<div class="potentialidp">';
 116                     $this->content->text .= '<a class="btn btn-secondary btn-block" ';
 117                     $this->content->text .= 'href="' . $idp['url']->out() . '" title="' . s($idp['name']) . '">';
 118                     if (!empty($idp['iconurl'])) {
 119                         $this->content->text .= '<img src="' . s($idp['iconurl']) . '" width="24" height="24" class="mr-1"/>';
 120                     }
 121                     $this->content->text .= s($idp['name']) . '</a></div>';
 122                 }
 123                 $this->content->text .= '</div>';
 124                 $this->content->text .= '</div>';
 125             }
 126         }
 127
 128         return $this->content;
 129     }
 130 }