1<?php
2/**
3 * Copyright 2017 Facebook, Inc.
4 *
5 * You are hereby granted a non-exclusive, worldwide, royalty-free license to
6 * use, copy, modify, and distribute this software in source code or binary
7 * form for use in connection with the web services and APIs provided by
8 * Facebook.
9 *
10 * As with any software that integrates with the Facebook platform, your use
11 * of this software is subject to the Facebook Developer Principles and
12 * Policies [http://developers.facebook.com/policy/]. This copyright notice
13 * shall be included in all copies or substantial portions of the software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 */
24namespace Facebook\HttpClients;
25
26use Facebook\Http\GraphRawResponse;
27use Facebook\Exceptions\FacebookSDKException;
28
29use GuzzleHttp\Client;
30use GuzzleHttp\Message\ResponseInterface;
31use GuzzleHttp\Ring\Exception\RingException;
32use GuzzleHttp\Exception\RequestException;
33
34class FacebookGuzzleHttpClient implements FacebookHttpClientInterface
35{
36    /**
37     * @var \GuzzleHttp\Client The Guzzle client.
38     */
39    protected $guzzleClient;
40
41    /**
42     * @param \GuzzleHttp\Client|null The Guzzle client.
43     */
44    public function __construct(Client $guzzleClient = null)
45    {
46        $this->guzzleClient = $guzzleClient ?: new Client();
47    }
48
49    /**
50     * @inheritdoc
51     */
52    public function send($url, $method, $body, array $headers, $timeOut)
53    {
54        $options = [
55            'headers' => $headers,
56            'body' => $body,
57            'timeout' => $timeOut,
58            'connect_timeout' => 10,
59            'verify' => __DIR__ . '/certs/DigiCertHighAssuranceEVRootCA.pem',
60        ];
61        $request = $this->guzzleClient->createRequest($method, $url, $options);
62
63        try {
64            $rawResponse = $this->guzzleClient->send($request);
65        } catch (RequestException $e) {
66            $rawResponse = $e->getResponse();
67
68            if ($e->getPrevious() instanceof RingException || !$rawResponse instanceof ResponseInterface) {
69                throw new FacebookSDKException($e->getMessage(), $e->getCode());
70            }
71        }
72
73        $rawHeaders = $this->getHeadersAsString($rawResponse);
74        $rawBody = $rawResponse->getBody();
75        $httpStatusCode = $rawResponse->getStatusCode();
76
77        return new GraphRawResponse($rawHeaders, $rawBody, $httpStatusCode);
78    }
79
80    /**
81     * Returns the Guzzle array of headers as a string.
82     *
83     * @param ResponseInterface $response The Guzzle response.
84     *
85     * @return string
86     */
87    public function getHeadersAsString(ResponseInterface $response)
88    {
89        $headers = $response->getHeaders();
90        $rawHeaders = [];
91        foreach ($headers as $name => $values) {
92            $rawHeaders[] = $name . ": " . implode(", ", $values);
93        }
94
95        return implode("\r\n", $rawHeaders);
96    }
97}
98