| 1 |
efrain |
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 |
/**
|
|
|
19 |
* recaptcha type form element
|
|
|
20 |
*
|
|
|
21 |
* Contains HTML class for a recaptcha type element
|
|
|
22 |
*
|
|
|
23 |
* @package core_form
|
|
|
24 |
* @copyright 2008 Nicolas Connault <nicolasconnault@gmail.com>
|
|
|
25 |
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
|
26 |
*/
|
|
|
27 |
|
|
|
28 |
require_once('HTML/QuickForm/input.php');
|
|
|
29 |
require_once('templatable_form_element.php');
|
|
|
30 |
|
|
|
31 |
/**
|
|
|
32 |
* recaptcha type form element
|
|
|
33 |
*
|
|
|
34 |
* HTML class for a recaptcha type element
|
|
|
35 |
*
|
|
|
36 |
* @package core_form
|
|
|
37 |
* @category form
|
|
|
38 |
* @copyright 2008 Nicolas Connault <nicolasconnault@gmail.com>
|
|
|
39 |
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
|
40 |
*/
|
|
|
41 |
class MoodleQuickForm_recaptcha extends HTML_QuickForm_input implements templatable {
|
|
|
42 |
use templatable_form_element {
|
|
|
43 |
export_for_template as export_for_template_base;
|
|
|
44 |
}
|
|
|
45 |
|
|
|
46 |
/** @var string html for help button, if empty then no help */
|
|
|
47 |
var $_helpbutton='';
|
|
|
48 |
|
|
|
49 |
/**
|
|
|
50 |
* constructor
|
|
|
51 |
*
|
|
|
52 |
* @param string $elementName (optional) name of the recaptcha element
|
|
|
53 |
* @param string $elementLabel (optional) label for recaptcha element
|
|
|
54 |
* @param mixed $attributes (optional) Either a typical HTML attribute string
|
|
|
55 |
* or an associative array
|
|
|
56 |
*/
|
|
|
57 |
public function __construct($elementName = null, $elementLabel = null, $attributes = null) {
|
|
|
58 |
parent::__construct($elementName, $elementLabel, $attributes);
|
|
|
59 |
$this->_type = 'recaptcha';
|
|
|
60 |
}
|
|
|
61 |
|
|
|
62 |
/**
|
|
|
63 |
* Old syntax of class constructor. Deprecated in PHP7.
|
|
|
64 |
*
|
|
|
65 |
* @deprecated since Moodle 3.1
|
|
|
66 |
*/
|
|
|
67 |
public function MoodleQuickForm_recaptcha($elementName = null, $elementLabel = null, $attributes = null) {
|
|
|
68 |
debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
|
|
|
69 |
self::__construct($elementName, $elementLabel, $attributes);
|
|
|
70 |
}
|
|
|
71 |
|
|
|
72 |
/**
|
|
|
73 |
* Returns the reCAPTCHA element in HTML
|
|
|
74 |
*
|
|
|
75 |
* @return string The HTML to render
|
|
|
76 |
*/
|
|
|
77 |
public function toHtml() {
|
|
|
78 |
global $CFG;
|
|
|
79 |
require_once($CFG->libdir . '/recaptchalib_v2.php');
|
|
|
80 |
|
|
|
81 |
return recaptcha_get_challenge_html(RECAPTCHA_API_URL, $CFG->recaptchapublickey);
|
|
|
82 |
}
|
|
|
83 |
|
|
|
84 |
/**
|
|
|
85 |
* get html for help button
|
|
|
86 |
*
|
|
|
87 |
* @return string html for help button
|
|
|
88 |
*/
|
|
|
89 |
function getHelpButton(){
|
|
|
90 |
return $this->_helpbutton;
|
|
|
91 |
}
|
|
|
92 |
|
|
|
93 |
/**
|
|
|
94 |
* Checks recaptcha response with Google.
|
|
|
95 |
*
|
|
|
96 |
* @param string $responsestr
|
|
|
97 |
* @return bool
|
|
|
98 |
*/
|
|
|
99 |
public function verify($responsestr) {
|
|
|
100 |
global $CFG;
|
|
|
101 |
require_once($CFG->libdir . '/recaptchalib_v2.php');
|
|
|
102 |
|
|
|
103 |
$response = recaptcha_check_response(RECAPTCHA_VERIFY_URL, $CFG->recaptchaprivatekey,
|
|
|
104 |
getremoteaddr(), $responsestr);
|
|
|
105 |
if (!$response['isvalid']) {
|
|
|
106 |
$attributes = $this->getAttributes();
|
|
|
107 |
$attributes['error_message'] = $response['error'];
|
|
|
108 |
$this->setAttributes($attributes);
|
|
|
109 |
return $response['error'];
|
|
|
110 |
}
|
|
|
111 |
return true;
|
|
|
112 |
}
|
|
|
113 |
|
|
|
114 |
public function export_for_template(renderer_base $output) {
|
|
|
115 |
$context = $this->export_for_template_base($output);
|
|
|
116 |
$context['html'] = $this->toHtml();
|
|
|
117 |
return $context;
|
|
|
118 |
}
|
|
|
119 |
|
|
|
120 |
/**
|
|
|
121 |
* Get force LTR option.
|
|
|
122 |
*
|
|
|
123 |
* @return bool
|
|
|
124 |
*/
|
|
|
125 |
public function get_force_ltr() {
|
|
|
126 |
return true;
|
|
|
127 |
}
|
|
|
128 |
|
|
|
129 |
}
|