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<?php |
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/** |
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* Copyright 2017 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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namespace Facebook\Helper; |
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use Facebook\Facebook; |
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use Facebook\Application; |
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use Facebook\Client; |
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use Facebook\SignedRequest; |
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use Facebook\Authentication\AccessToken; |
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use Facebook\Authentication\OAuth2Client; |
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/** |
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* @package Facebook |
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*/ |
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abstract class SignedRequestFromInputHelper |
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{ |
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/** |
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* @var null|SignedRequest the SignedRequest entity |
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*/ |
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protected $signedRequest; |
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/** |
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* @var Application the Application entity |
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*/ |
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protected $app; |
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/** |
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* @var OAuth2Client The OAuth 2.0 client service. |
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*/ |
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protected $oAuth2Client; |
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/** |
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* Initialize the helper and process available signed request data. |
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* |
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* @param Application $app the Application entity |
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* @param Client $client the client to make HTTP requests |
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* @param string $graphVersion the version of Graph to use |
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*/ |
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public function __construct(Application $app, Client $client, $graphVersion) |
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{ |
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$this->app = $app; |
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$this->oAuth2Client = new OAuth2Client($this->app, $client, $graphVersion); |
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$this->instantiateSignedRequest(); |
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} |
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/** |
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* Instantiates a new SignedRequest entity. |
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* |
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* @param null|string |
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* @param null|mixed $rawSignedRequest |
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*/ |
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public function instantiateSignedRequest($rawSignedRequest = null) |
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{ |
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$rawSignedRequest = $rawSignedRequest ?: $this->getRawSignedRequest(); |
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if (!$rawSignedRequest) { |
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return; |
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} |
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$this->signedRequest = new SignedRequest($this->app, $rawSignedRequest); |
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} |
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/** |
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* Returns an AccessToken entity from the signed request. |
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* |
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* @throws \Facebook\Exception\SDKException |
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* |
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* @return null|AccessToken |
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*/ |
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public function getAccessToken() |
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{ |
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if ($this->signedRequest && $this->signedRequest->hasOAuthData()) { |
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$code = $this->signedRequest->get('code'); |
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$accessToken = $this->signedRequest->get('oauth_token'); |
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if ($code && !$accessToken) { |
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return $this->oAuth2Client->getAccessTokenFromCode($code); |
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} |
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$expiresAt = $this->signedRequest->get('expires', 0); |
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return new AccessToken($accessToken, $expiresAt); |
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} |
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return null; |
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} |
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/** |
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* Returns the SignedRequest entity. |
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* |
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* @return null|SignedRequest |
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*/ |
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public function getSignedRequest() |
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{ |
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return $this->signedRequest; |
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} |
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/** |
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* Returns the user_id if available. |
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* |
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* @return null|string |
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*/ |
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public function getUserId() |
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{ |
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return $this->signedRequest ? $this->signedRequest->getUserId() : null; |
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} |
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/** |
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* Get raw signed request from input. |
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* |
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* @return null|string |
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*/ |
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abstract public function getRawSignedRequest(); |
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/** |
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* Get raw signed request from POST input. |
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* |
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* @return null|string |
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*/ |
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public function getRawSignedRequestFromPost() |
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{ |
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if (isset($_POST['signed_request'])) { |
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return $_POST['signed_request']; |
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} |
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return null; |
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} |
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/** |
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* Get raw signed request from cookie set from the Javascript SDK. |
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* |
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* @return null|string |
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*/ |
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public function getRawSignedRequestFromCookie() |
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{ |
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if (isset($_COOKIE['fbsr_' . $this->app->getId()])) { |
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return $_COOKIE['fbsr_' . $this->app->getId()]; |
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} |
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return null; |
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} |
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} |
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facebook /
php-graph-sdk
