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<?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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SimpleMachines /
SMF2.1
