Your IP : 216.73.216.131
<?php
/**
* @package Komento
* @copyright Copyright (C) 2012 Stack Ideas Private Limited. All rights reserved.
* @license GNU/GPL, see LICENSE.php
*
* Komento is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
defined('_JEXEC') or die('Restricted access');
/*
* This is a PHP library that handles calling reCAPTCHA.
* - Documentation and latest version
* http://recaptcha.net/plugins/php/
* - Get a reCAPTCHA API Key
* https://www.google.com/recaptcha/admin/create
* - Discussion group
* http://groups.google.com/group/recaptcha
*
* Copyright (c) 2007 reCAPTCHA -- http://recaptcha.net
* AUTHORS:
* Mike Crawford
* Ben Maurer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
class KomentoRecaptcha extends JObject
{
const RECAPTCHA_API_SERVER = "http://www.google.com/recaptcha/api";
const RECAPTCHA_API_SECURE_SERVER = "https://www.google.com/recaptcha/api";
const RECAPTCHA_VERIFY_SERVER = "www.google.com";
public function verify( $data, $params = array() )
{
if ( !array_key_exists('recaptcha_challenge_field', $data)
|| !array_key_exists('recaptcha_response_field', $data)
|| empty($data['recaptcha_challenge_field'])
|| empty($data['recaptcha_response_field']) )
{
$this->setError( JText::_('COM_KOMENTO_RECAPTCHA_INVALID_RESPONSE') );
return false;
}
$config = Komento::getConfig();
$privatekey = $config->get( 'antispam_recaptcha_private_key' );
$remoteip = JRequest::getVar('REMOTE_ADDR', '', 'SERVER');
// if ($remoteip)
// {
// $this->setError( 'For security reasons, you must pass the remote ip to reCAPTCHA' );
// return false;
// }
if (empty($privatekey))
{
$this->setError( 'To use reCAPTCHA you must get an API key from <a href="https://www.google.com/recaptcha/admin/create">https://www.google.com/recaptcha/admin/create</a>' );
return false;
}
$params = array(
'privatekey' => $privatekey,
'remoteip' => $remoteip,
'challenge' => $data['recaptcha_challenge_field'],
'response' => $data['recaptcha_response_field']
) + $params;
$response = $this->_recaptcha_http_post( self::RECAPTCHA_VERIFY_SERVER, "/recaptcha/api/verify", $params );
$answers = explode ("\n", $response [1]);
if (trim($answers[0]) != 'true')
{
$this->setError( $answers [1] );
return false;
}
return true;
}
public function getHTML()
{
$template = Komento::getTheme();
$config = Komento::getConfig();
$publicKey = $config->get( 'antispam_recaptcha_public_key' );
$language = $config->get( 'antispam_recaptcha_lang', 'en' );
$theme = $config->get( 'antispam_recaptcha_theme', 'clean' );
$server = $config->get( 'antispam_recaptcha_ssl' ) ? self::RECAPTCHA_API_SECURE_SERVER : self::RECAPTCHA_API_SERVER;
$template->set( 'server', $server );
$template->set( 'publicKey', $publicKey );
$template->set( 'language', $language );
$template->set( 'theme', $theme );
// Use AJAX method to prevent operation aborted problems with IE
return $template->fetch( 'comment/recaptcha.php' );
}
/**
* Encodes the given data into a query string format
* @param $data - array of string elements to be encoded
* @return string - encoded request
*/
private function _recaptcha_qsencode( $data )
{
$req = "";
foreach ($data as $key => $value)
{
$req .= $key . '=' . urlencode( stripslashes($value) ) . '&';
}
// Cut the last '&'
$req = rtrim($req, '&');
return $req;
}
/**
* Submits an HTTP POST to a reCAPTCHA server
* @param string $host
* @param string $path
* @param array $data
* @param int port
* @return array response
*/
private function _recaptcha_http_post($host, $path, $data, $port = 80)
{
$req = $this->_recaptcha_qsencode ($data);
$http_request = "POST $path HTTP/1.0\r\n";
$http_request .= "Host: $host\r\n";
$http_request .= "Content-Type: application/x-www-form-urlencoded;\r\n";
$http_request .= "Content-Length: " . strlen($req) . "\r\n";
$http_request .= "User-Agent: reCAPTCHA/PHP\r\n";
$http_request .= "\r\n";
$http_request .= $req;
$response = '';
if( false == ( $fs = @fsockopen($host, $port, $errno, $errstr, 10) ) ) {
die ('Could not open socket');
}
fwrite($fs, $http_request);
while ( !feof($fs) )
{
$response .= fgets($fs, 1160); // One TCP-IP packet
}
fclose($fs);
$response = explode("\r\n\r\n", $response, 2);
return $response;
}
public static function getReloadSyntax()
{
return 'Recaptcha.reload();';
}
}