Facebook login implemented
This commit is contained in:
Joey Lai
210
website/queries/Facebook/HttpClients/FacebookCurlHttpClient.php
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210
website/queries/Facebook/HttpClients/FacebookCurlHttpClient.php
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<?php
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/**
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* Copyright 2014 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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* @const Curl Version which is unaffected by the proxy header length error.
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*/
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const CURL_PROXY_QUIRK_VER = 0x071E00;
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/**
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* @const "Connection Established" header text
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*/
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const CONNECTION_ESTABLISHED = "HTTP/1.0 200 Connection established\r\n\r\n";
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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 $return;
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}
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/**
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* Extracts the headers and the body into a two-part array
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*
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* @return array
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*/
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public function extractResponseHeadersAndBody()
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{
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$headerSize = $this->getHeaderSize();
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$rawHeaders = mb_substr($this->rawResponse, 0, $headerSize);
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$rawBody = mb_substr($this->rawResponse, $headerSize);
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return [trim($rawHeaders), trim($rawBody)];
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}
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/**
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* Return proper header size
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*
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* @return integer
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*/
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private function getHeaderSize()
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{
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$headerSize = $this->facebookCurl->getinfo(CURLINFO_HEADER_SIZE);
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// This corrects a Curl bug where header size does not account
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// for additional Proxy headers.
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if ($this->needsCurlProxyFix()) {
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// Additional way to calculate the request body size.
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if (preg_match('/Content-Length: (\d+)/', $this->rawResponse, $m)) {
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$headerSize = mb_strlen($this->rawResponse) - $m[1];
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} elseif (stripos($this->rawResponse, self::CONNECTION_ESTABLISHED) !== false) {
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$headerSize += mb_strlen(self::CONNECTION_ESTABLISHED);
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}
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}
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return $headerSize;
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}
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/**
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* Detect versions of Curl which report incorrect header lengths when
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* using Proxies.
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*
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* @return boolean
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*/
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private function needsCurlProxyFix()
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{
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$ver = $this->facebookCurl->version();
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$version = $ver['version_number'];
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return $version < self::CURL_PROXY_QUIRK_VER;
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}
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}
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