<?php
/**
* This is a PHP library that handles calling reCAPTCHA.
*
* @copyright Copyright (c) 2015, Google Inc.
* @link https://www.google.com/recaptcha
*
* 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.
*/
namespace ReCaptcha\RequestMethod;
use ReCaptcha\ReCaptcha;
use ReCaptcha\RequestMethod;
use ReCaptcha\RequestParameters;
/**
* Sends a POST request to the reCAPTCHA service, but makes use of fsockopen()
* instead of get_file_contents(). This is to account for people who may be on
* servers where allow_url_open is disabled.
*/
class SocketPost implements RequestMethod
{
/**
* Socket to the reCAPTCHA service
* @var Socket
*/
private $socket;
/**
* Only needed if you want to override the defaults
*
* @param \ReCaptcha\RequestMethod\Socket $socket optional socket, injectable for testing
* @param string $siteVerifyUrl URL for reCAPTCHA sitevrerify API
*/
public function __construct(Socket $socket = null, $siteVerifyUrl = null)
{
$this->socket = (is_null($socket)) ? new Socket() : $socket;
$this->siteVerifyUrl = (is_null($siteVerifyUrl)) ? ReCaptcha::SITE_VERIFY_URL : $siteVerifyUrl;
}
/**
* Submit the POST request with the specified parameters.
*
* @param RequestParameters $params Request parameters
* @return string Body of the reCAPTCHA response
*/
public function submit(RequestParameters $params)
{
$errno = 0;
$errstr = '';
$urlParsed = parse_url($this->siteVerifyUrl);
if (false === $this->socket->fsockopen('ssl://' . $urlParsed['host'], 443, $errno, $errstr, 30)) {
return '{"success": false, "error-codes": ["'.ReCaptcha::E_CONNECTION_FAILED.'"]}';
}
$content = $params->toQueryString();
$request = "POST " . $urlParsed['path'] . " HTTP/1.1\r\n";
$request .= "Host: " . $urlParsed['host'] . "\r\n";
$request .= "Content-Type: application/x-www-form-urlencoded\r\n";
$request .= "Content-length: " . strlen($content) . "\r\n";
$request .= "Connection: close\r\n\r\n";
$request .= $content . "\r\n\r\n";
$this->socket->fwrite($request);
$response = '';
while (!$this->socket->feof()) {
$response .= $this->socket->fgets(4096);
}
$this->socket->fclose();
if (0 !== strpos($response, 'HTTP/1.1 200 OK')) {
return '{"success": false, "error-codes": ["'.ReCaptcha::E_BAD_RESPONSE.'"]}';
}
$parts = preg_split("#\n\s*\n#Uis", $response);
return $parts[1];
}
}