<?php
/**
* This is a PHP library that handles calling reCAPTCHA.
*
* BSD 3-Clause License
* @copyright (c) 2019, Google Inc.
* @link https://www.google.com/recaptcha
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
namespace ReCaptcha\RequestMethod;
use ReCaptcha\ReCaptcha;
use ReCaptcha\RequestMethod;
use ReCaptcha\RequestParameters;
/**
* Sends cURL request to the reCAPTCHA service.
* Note: this requires the cURL extension to be enabled in PHP
* @see http://php.net/manual/en/book.curl.php
*/
class CurlPost implements RequestMethod
{
/**
* Curl connection to the reCAPTCHA service
* @var Curl
*/
private $curl;
/**
* URL for reCAPTCHA siteverify API
* @var string
*/
private $siteVerifyUrl;
/**
* Only needed if you want to override the defaults
*
* @param Curl $curl Curl resource
* @param string $siteVerifyUrl URL for reCAPTCHA siteverify API
*/
public function __construct(Curl $curl = null, $siteVerifyUrl = null)
{
$this->curl = (is_null($curl)) ? new Curl() : $curl;
$this->siteVerifyUrl = (is_null($siteVerifyUrl)) ? ReCaptcha::SITE_VERIFY_URL : $siteVerifyUrl;
}
/**
* Submit the cURL request with the specified parameters.
*
* @param RequestParameters $params Request parameters
* @return string Body of the reCAPTCHA response
*/
public function submit(RequestParameters $params)
{
$handle = $this->curl->init($this->siteVerifyUrl);
$options = array(
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => $params->toQueryString(),
CURLOPT_HTTPHEADER => array(
'Content-Type: application/x-www-form-urlencoded'
),
CURLINFO_HEADER_OUT => false,
CURLOPT_HEADER => false,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_SSL_VERIFYPEER => true
);
$this->curl->setoptArray($handle, $options);
$response = $this->curl->exec($handle);
$this->curl->close($handle);
if ($response !== false) {
return $response;
}
return '{"success": false, "error-codes": ["'.ReCaptcha::E_CONNECTION_FAILED.'"]}';
}
}