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1 | <?php |
2 | /* | |
3 | +--------------------------------------------------------------------+ | |
06b69b18 | 4 | | CiviCRM version 4.5 | |
6a488035 | 5 | +--------------------------------------------------------------------+ |
06b69b18 | 6 | | Copyright CiviCRM LLC (c) 2004-2014 | |
6a488035 TO |
7 | +--------------------------------------------------------------------+ |
8 | | This file is a part of CiviCRM. | | |
9 | | | | |
10 | | CiviCRM is free software; you can copy, modify, and distribute it | | |
11 | | under the terms of the GNU Affero General Public License | | |
12 | | Version 3, 19 November 2007 and the CiviCRM Licensing Exception. | | |
13 | | | | |
14 | | CiviCRM is distributed in the hope that it will be useful, but | | |
15 | | WITHOUT ANY WARRANTY; without even the implied warranty of | | |
16 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | | |
17 | | See the GNU Affero General Public License for more details. | | |
18 | | | | |
19 | | You should have received a copy of the GNU Affero General Public | | |
20 | | License and the CiviCRM Licensing Exception along | | |
21 | | with this program; if not, contact CiviCRM LLC | | |
22 | | at info[AT]civicrm[DOT]org. If you have questions about the | | |
23 | | GNU Affero General Public License or the licensing of CiviCRM, | | |
24 | | see the CiviCRM license FAQ at http://civicrm.org/licensing | | |
25 | +--------------------------------------------------------------------+ | |
26 | */ | |
27 | ||
28 | /** | |
29 | * | |
30 | * @package CRM | |
06b69b18 | 31 | * @copyright CiviCRM LLC (c) 2004-2014 |
6a488035 TO |
32 | * $Id$ |
33 | * | |
34 | */ | |
35 | class CRM_Utils_ReCAPTCHA { | |
36 | ||
37 | protected $_captcha = NULL; | |
38 | ||
39 | protected $_name = NULL; | |
40 | ||
41 | protected $_url = NULL; | |
42 | ||
43 | protected $_phrase = NULL; | |
44 | ||
45 | /** | |
46 | * We only need one instance of this object. So we use the singleton | |
47 | * pattern and cache the instance in this variable | |
48 | * | |
49 | * @var object | |
50 | * @static | |
51 | */ | |
52 | static private $_singleton = NULL; | |
53 | ||
54 | /** | |
55 | * singleton function used to manage this object | |
56 | * | |
57 | * @param string the key to permit session scope's | |
58 | * | |
59 | * @return object | |
60 | * @static | |
61 | * | |
62 | */ | |
63 | static function &singleton() { | |
64 | if (self::$_singleton === NULL) { | |
65 | self::$_singleton = new CRM_Utils_ReCAPTCHA(); | |
66 | } | |
67 | return self::$_singleton; | |
68 | } | |
69 | ||
5bc392e6 EM |
70 | /** |
71 | * | |
72 | */ | |
6a488035 TO |
73 | function __construct() {} |
74 | ||
75 | /** | |
76 | * Add element to form | |
77 | * | |
78 | */ | |
79 | static function add(&$form) { | |
80 | $error = NULL; | |
81 | $config = CRM_Core_Config::singleton(); | |
82 | $useSSL = FALSE; | |
d2485799 | 83 | if ( !function_exists( 'recaptcha_get_html' ) ) { |
14e15f46 | 84 | require_once 'packages/recaptcha/recaptchalib.php'; |
d2485799 | 85 | } |
6a488035 TO |
86 | |
87 | // See if we are using SSL | |
88 | if (CRM_Utils_System::isSSL()) { | |
89 | $useSSL = TRUE; | |
90 | } | |
91 | $html = recaptcha_get_html($config->recaptchaPublicKey, $error, $useSSL); | |
92 | ||
93 | $form->assign('recaptchaHTML', $html); | |
94 | $form->assign('recaptchaOptions', $config->recaptchaOptions); | |
95 | $form->add( | |
96 | 'text', | |
97 | 'recaptcha_challenge_field', | |
98 | NULL, | |
99 | NULL, | |
100 | TRUE | |
101 | ); | |
102 | $form->add( | |
103 | 'hidden', | |
104 | 'recaptcha_response_field', | |
105 | 'manual_challenge' | |
106 | ); | |
107 | ||
108 | $form->registerRule('recaptcha', 'callback', 'validate', 'CRM_Utils_ReCAPTCHA'); | |
109 | $form->addRule( | |
110 | 'recaptcha_challenge_field', | |
111 | ts('Input text must match the phrase in the image. Please review the image and re-enter matching text.'), | |
112 | 'recaptcha', | |
113 | $form | |
114 | ); | |
115 | } | |
116 | ||
5bc392e6 EM |
117 | /** |
118 | * @param $value | |
119 | * @param $form | |
120 | * | |
121 | * @return mixed | |
122 | */ | |
6a488035 TO |
123 | static function validate($value, $form) { |
124 | $config = CRM_Core_Config::singleton(); | |
125 | ||
126 | $resp = recaptcha_check_answer($config->recaptchaPrivateKey, | |
127 | $_SERVER['REMOTE_ADDR'], | |
128 | $_POST["recaptcha_challenge_field"], | |
129 | $_POST["recaptcha_response_field"] | |
130 | ); | |
131 | return $resp->is_valid; | |
132 | } | |
133 | } | |
134 |