3 +--------------------------------------------------------------------+
4 | CiviCRM version 4.7 |
5 +--------------------------------------------------------------------+
6 | Copyright CiviCRM LLC (c) 2004-2016 |
7 +--------------------------------------------------------------------+
8 | This file is a part of CiviCRM. |
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. |
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. |
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 +--------------------------------------------------------------------+
31 * @copyright CiviCRM LLC (c) 2004-2016
33 class CRM_Utils_ReCAPTCHA
{
35 protected $_captcha = NULL;
37 protected $_name = NULL;
39 protected $_url = NULL;
41 protected $_phrase = NULL;
46 * We only need one instance of this object. So we use the singleton
47 * pattern and cache the instance in this variable
49 * @var CRM_Utils_ReCAPTCHA
51 static private $_singleton = NULL;
54 * Singleton function used to manage this object.
58 public static function &singleton() {
59 if (self
::$_singleton === NULL) {
60 self
::$_singleton = new CRM_Utils_ReCAPTCHA();
62 return self
::$_singleton;
66 * Add element to form.
68 * @param CRM_Core_Form $form
70 public static function add(&$form) {
72 $config = CRM_Core_Config
::singleton();
74 if (!function_exists('recaptcha_get_html')) {
75 require_once 'packages/recaptcha/recaptchalib.php';
78 // See if we are using SSL
79 if (CRM_Utils_System
::isSSL()) {
82 $html = recaptcha_get_html($config->recaptchaPublicKey
, $error, $useSSL);
84 $form->assign('recaptchaHTML', $html);
85 $form->assign('recaptchaOptions', $config->recaptchaOptions
);
88 'g-recaptcha-response',
93 $form->registerRule('recaptcha', 'callback', 'validate', 'CRM_Utils_ReCAPTCHA');
94 if ($form->isSubmitted() && empty($form->_submitValues
['g-recaptcha-response'])) {
95 $form->setElementError(
96 'g-recaptcha-response',
97 ts('Input text must match the phrase in the image. Please review the image and re-enter matching text.')