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129 lines
3.9 KiB
129 lines
3.9 KiB
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* recaptcha type form element
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*
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* Contains HTML class for a recaptcha type element
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*
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* @package core_form
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* @copyright 2008 Nicolas Connault <nicolasconnault@gmail.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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require_once('HTML/QuickForm/input.php');
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require_once('templatable_form_element.php');
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/**
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* recaptcha type form element
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*
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* HTML class for a recaptcha type element
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*
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* @package core_form
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* @category form
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* @copyright 2008 Nicolas Connault <nicolasconnault@gmail.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class MoodleQuickForm_recaptcha extends HTML_QuickForm_input implements templatable {
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use templatable_form_element {
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export_for_template as export_for_template_base;
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}
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/** @var string html for help button, if empty then no help */
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var $_helpbutton='';
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/**
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* constructor
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*
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* @param string $elementName (optional) name of the recaptcha element
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* @param string $elementLabel (optional) label for recaptcha element
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* @param mixed $attributes (optional) Either a typical HTML attribute string
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* or an associative array
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*/
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public function __construct($elementName = null, $elementLabel = null, $attributes = null) {
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parent::__construct($elementName, $elementLabel, $attributes);
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$this->_type = 'recaptcha';
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}
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/**
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* Old syntax of class constructor. Deprecated in PHP7.
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*
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* @deprecated since Moodle 3.1
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*/
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public function MoodleQuickForm_recaptcha($elementName = null, $elementLabel = null, $attributes = null) {
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debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
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self::__construct($elementName, $elementLabel, $attributes);
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}
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/**
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* Returns the reCAPTCHA element in HTML
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*
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* @return string The HTML to render
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*/
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public function toHtml() {
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global $CFG;
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require_once($CFG->libdir . '/recaptchalib_v2.php');
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return recaptcha_get_challenge_html(RECAPTCHA_API_URL, $CFG->recaptchapublickey);
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}
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/**
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* get html for help button
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*
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* @return string html for help button
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*/
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function getHelpButton(){
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return $this->_helpbutton;
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}
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/**
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* Checks recaptcha response with Google.
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*
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* @param string $responsestr
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* @return bool
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*/
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public function verify($responsestr) {
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global $CFG;
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require_once($CFG->libdir . '/recaptchalib_v2.php');
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$response = recaptcha_check_response(RECAPTCHA_VERIFY_URL, $CFG->recaptchaprivatekey,
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getremoteaddr(), $responsestr);
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if (!$response['isvalid']) {
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$attributes = $this->getAttributes();
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$attributes['error_message'] = $response['error'];
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$this->setAttributes($attributes);
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return $response['error'];
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}
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return true;
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}
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public function export_for_template(renderer_base $output) {
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$context = $this->export_for_template_base($output);
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$context['html'] = $this->toHtml();
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return $context;
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}
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/**
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* Get force LTR option.
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*
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* @return bool
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*/
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public function get_force_ltr() {
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return true;
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}
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}
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