mirror of https://github.com/BOINC/boinc.git
122 lines
3.7 KiB
PHP
122 lines
3.7 KiB
PHP
<?php
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/**
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* This is a PHP library that handles calling reCAPTCHA.
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*
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* @copyright Copyright (c) 2015, Google Inc.
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* @link http://www.google.com/recaptcha
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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namespace ReCaptcha\RequestMethod;
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use ReCaptcha\RequestMethod;
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use ReCaptcha\RequestParameters;
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/**
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* Sends a POST request to the reCAPTCHA service, but makes use of fsockopen()
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* instead of get_file_contents(). This is to account for people who may be on
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* servers where allow_furl_open is disabled.
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*/
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class SocketPost implements RequestMethod
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{
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/**
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* reCAPTCHA service host.
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* @const string
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*/
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const RECAPTCHA_HOST = 'www.google.com';
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/**
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* @const string reCAPTCHA service path
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*/
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const SITE_VERIFY_PATH = '/recaptcha/api/siteverify';
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/**
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* @const string Bad request error
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*/
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const BAD_REQUEST = '{"success": false, "error-codes": ["invalid-request"]}';
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/**
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* @const string Bad response error
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*/
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const BAD_RESPONSE = '{"success": false, "error-codes": ["invalid-response"]}';
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/**
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* Socket to the reCAPTCHA service
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* @var Socket
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*/
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private $socket;
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/**
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* Constructor
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*
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* @param \ReCaptcha\RequestMethod\Socket $socket optional socket, injectable for testing
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*/
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public function __construct(Socket $socket = null)
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{
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if (!is_null($socket)) {
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$this->socket = $socket;
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} else {
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$this->socket = new Socket();
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}
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}
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/**
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* Submit the POST request with the specified parameters.
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*
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* @param RequestParameters $params Request parameters
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* @return string Body of the reCAPTCHA response
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*/
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public function submit(RequestParameters $params)
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{
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$errno = 0;
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$errstr = '';
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if (false === $this->socket->fsockopen('ssl://' . self::RECAPTCHA_HOST, 443, $errno, $errstr, 30)) {
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return self::BAD_REQUEST;
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}
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$content = $params->toQueryString();
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$request = "POST " . self::SITE_VERIFY_PATH . " HTTP/1.1\r\n";
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$request .= "Host: " . self::RECAPTCHA_HOST . "\r\n";
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$request .= "Content-Type: application/x-www-form-urlencoded\r\n";
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$request .= "Content-length: " . strlen($content) . "\r\n";
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$request .= "Connection: close\r\n\r\n";
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$request .= $content . "\r\n\r\n";
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$this->socket->fwrite($request);
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$response = '';
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while (!$this->socket->feof()) {
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$response .= $this->socket->fgets(4096);
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}
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$this->socket->fclose();
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if (0 !== strpos($response, 'HTTP/1.1 200 OK')) {
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return self::BAD_RESPONSE;
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}
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$parts = preg_split("#\n\s*\n#Uis", $response);
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return $parts[1];
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}
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}
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