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- Veröffentlicht
- 06.01.2017
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ReCaptcha.php
01 <?php
02 /**
03 * This is a PHP library that handles calling reCAPTCHA.
04 *
05 * @copyright Copyright (c) 2015, Google Inc.
06 * @link http://www.google.com/recaptcha
07 *
08 * Permission is hereby granted, free of charge, to any person obtaining a copy
09 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 */
26
27 namespace ReCaptcha;
28
29 /**
30 * reCAPTCHA client.
31 */
32 class ReCaptcha
33 {
34 /**
35 * Version of this client library.
36 * @const string
37 */
38 const VERSION = 'php_1.1.2';
39
40 /**
41 * Shared secret for the site.
42 * @var type string
43 */
44 private $secret;
45
46 /**
47 * Method used to communicate with service. Defaults to POST request.
48 * @var RequestMethod
49 */
50 private $requestMethod;
51
52 /**
53 * Create a configured instance to use the reCAPTCHA service.
54 *
55 * @param string $secret shared secret between site and reCAPTCHA server.
56 * @param RequestMethod $requestMethod method used to send the request. Defaults to POST.
57 */
58 public function __construct($secret, RequestMethod $requestMethod = null)
59 {
60 if (empty($secret)) {
61 throw new \RuntimeException('No secret provided');
62 }
63
64 if (!is_string($secret)) {
65 throw new \RuntimeException('The provided secret must be a string');
66 }
67
68 $this->secret = $secret;
69
70 if (!is_null($requestMethod)) {
71 $this->requestMethod = $requestMethod;
72 } else {
73 $this->requestMethod = new RequestMethod\Post();
74 }
75 }
76
77 /**
78 * Calls the reCAPTCHA siteverify API to verify whether the user passes
79 * CAPTCHA test.
80 *
81 * @param string $response The value of 'g-recaptcha-response' in the submitted form.
82 * @param string $remoteIp The end user's IP address.
83 * @return Response Response from the service.
84 */
85 public function verify($response, $remoteIp = null)
86 {
87 // Discard empty solution submissions
88 if (empty($response)) {
89 $recaptchaResponse = new Response(false, array('missing-input-response'));
90 return $recaptchaResponse;
91 }
92
93 $params = new RequestParameters($this->secret, $response, $remoteIp, self::VERSION);
94 $rawResponse = $this->requestMethod->submit($params);
95 return Response::fromJson($rawResponse);
96 }
97 }
98