109 lines
4 KiB
PHP
109 lines
4 KiB
PHP
|
<?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 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 siteverify 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/1.0\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/1.0 200 OK')) {
|
||
|
return '{"success": false, "error-codes": ["'.ReCaptcha::E_BAD_RESPONSE.'"]}';
|
||
|
}
|
||
|
|
||
|
$parts = preg_split("#\n\s*\n#Uis", $response);
|
||
|
|
||
|
return $parts[1];
|
||
|
}
|
||
|
}
|