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<?php |
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/** |
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* Copyright 2016 Facebook, Inc. |
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* |
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* You are hereby granted a non-exclusive, worldwide, royalty-free license to |
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* use, copy, modify, and distribute this software in source code or binary |
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* form for use in connection with the web services and APIs provided by |
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* Facebook. |
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* |
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* As with any software that integrates with the Facebook platform, your use |
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* of this software is subject to the Facebook Developer Principles and |
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* Policies [http://developers.facebook.com/policy/]. This copyright notice |
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* shall be included in 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 |
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* THE 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 |
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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* DEALINGS IN THE SOFTWARE. |
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* |
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*/ |
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namespace Facebook\HttpClients; |
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use Facebook\Http\GraphRawResponse; |
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use Facebook\Exceptions\FacebookSDKException; |
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/** |
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* Class FacebookCurlHttpClient |
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* |
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* @package Facebook |
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*/ |
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class FacebookCurlHttpClient implements FacebookHttpClientInterface |
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{ |
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/** |
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* @var string The client error message |
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*/ |
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protected $curlErrorMessage = ''; |
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/** |
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* @var int The curl client error code |
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*/ |
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protected $curlErrorCode = 0; |
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/** |
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* @var string|boolean The raw response from the server |
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*/ |
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protected $rawResponse; |
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/** |
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* @var FacebookCurl Procedural curl as object |
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*/ |
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protected $facebookCurl; |
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/** |
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* @param FacebookCurl|null Procedural curl as object |
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*/ |
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public function __construct(FacebookCurl $facebookCurl = null) |
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{ |
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$this->facebookCurl = $facebookCurl ?: new FacebookCurl(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function send($url, $method, $body, array $headers, $timeOut) |
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{ |
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$this->openConnection($url, $method, $body, $headers, $timeOut); |
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$this->sendRequest(); |
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if ($curlErrorCode = $this->facebookCurl->errno()) { |
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throw new FacebookSDKException($this->facebookCurl->error(), $curlErrorCode); |
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} |
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// Separate the raw headers from the raw body |
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list($rawHeaders, $rawBody) = $this->extractResponseHeadersAndBody(); |
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$this->closeConnection(); |
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return new GraphRawResponse($rawHeaders, $rawBody); |
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} |
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/** |
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* Opens a new curl connection. |
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* |
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* @param string $url The endpoint to send the request to. |
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* @param string $method The request method. |
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* @param string $body The body of the request. |
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* @param array $headers The request headers. |
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* @param int $timeOut The timeout in seconds for the request. |
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*/ |
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public function openConnection($url, $method, $body, array $headers, $timeOut) |
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{ |
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$options = [ |
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CURLOPT_CUSTOMREQUEST => $method, |
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CURLOPT_HTTPHEADER => $this->compileRequestHeaders($headers), |
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CURLOPT_URL => $url, |
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CURLOPT_CONNECTTIMEOUT => 10, |
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CURLOPT_TIMEOUT => $timeOut, |
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CURLOPT_RETURNTRANSFER => true, // Follow 301 redirects |
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CURLOPT_HEADER => true, // Enable header processing |
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CURLOPT_SSL_VERIFYHOST => 2, |
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CURLOPT_SSL_VERIFYPEER => true, |
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CURLOPT_CAINFO => __DIR__ . '/certs/DigiCertHighAssuranceEVRootCA.pem', |
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]; |
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if ($method !== "GET") { |
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$options[CURLOPT_POSTFIELDS] = $body; |
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} |
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$this->facebookCurl->init(); |
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$this->facebookCurl->setoptArray($options); |
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} |
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/** |
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* Closes an existing curl connection |
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*/ |
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public function closeConnection() |
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{ |
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$this->facebookCurl->close(); |
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} |
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/** |
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* Send the request and get the raw response from curl |
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*/ |
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public function sendRequest() |
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{ |
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$this->rawResponse = $this->facebookCurl->exec(); |
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} |
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/** |
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* Compiles the request headers into a curl-friendly format. |
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* |
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* @param array $headers The request headers. |
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* |
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* @return array |
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*/ |
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public function compileRequestHeaders(array $headers) |
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{ |
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$return = []; |
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foreach ($headers as $key => $value) { |
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$return[] = $key . ': ' . $value; |
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} |
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return $return; |
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} |
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/** |
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* Extracts the headers and the body into a two-part array |
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* |
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* @return array |
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*/ |
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public function extractResponseHeadersAndBody() |
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{ |
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$parts = explode("\r\n\r\n", $this->rawResponse); |
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$rawBody = array_pop($parts); |
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$rawHeaders = implode("\r\n\r\n", $parts); |
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return [trim($rawHeaders), trim($rawBody)]; |
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} |
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} |
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