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<?php |
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/** |
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* @author Tharanga Kothalawala <[email protected]> |
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* @date 30-12-2018 |
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*/ |
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namespace TSK\SSO\ThirdParty\Facebook; |
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use TSK\SSO\Storage\ThirdPartyStorageRepository; |
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use TSK\SSO\ThirdParty; |
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use TSK\SSO\ThirdParty\CommonAccessToken; |
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use TSK\SSO\ThirdParty\Exception\NoThirdPartyEmailFoundException; |
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use TSK\SSO\ThirdParty\Exception\ThirdPartyConnectionFailedException; |
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use TSK\SSO\ThirdParty\ThirdPartyUser; |
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use TSK\SSO\ThirdParty\VendorConnection; |
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use Facebook\Exceptions\FacebookResponseException; |
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use Facebook\Exceptions\FacebookSDKException; |
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use Facebook\Facebook; |
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/** |
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* @codeCoverageIgnore |
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* @package TSK\SSO\ThirdParty\Facebook |
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* @see https://developers.facebook.com/docs/php/api/5.0.0 |
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*/ |
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class FacebookConnection implements VendorConnection |
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{ |
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/** |
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* @var FacebookApiConfiguration |
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*/ |
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private $facebookApiConfiguration; |
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/** |
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* @var ThirdPartyStorageRepository |
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*/ |
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private $storageRepository; |
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/** |
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* @var Facebook |
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*/ |
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private $facebook; |
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/** |
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* @param FacebookApiConfiguration $facebookApiConfiguration |
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* @param ThirdPartyStorageRepository $storageRepository |
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*/ |
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public function __construct( |
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FacebookApiConfiguration $facebookApiConfiguration, |
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ThirdPartyStorageRepository $storageRepository |
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) { |
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$this->facebookApiConfiguration = $facebookApiConfiguration; |
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$this->storageRepository = $storageRepository; |
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$this->facebook = new Facebook(array( |
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'app_id' => $this->facebookApiConfiguration->appId(), |
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'app_secret' => $this->facebookApiConfiguration->appSecret(), |
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'default_graph_version' => $this->facebookApiConfiguration->apiVersion(), |
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)); |
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} |
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/** |
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* Use this to get a link to redirect a user to the facebook login page. |
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* |
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* @return string |
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*/ |
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public function getGrantUrl() |
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{ |
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$params = array('req_perms' => $this->facebookApiConfiguration->appPermissions()); |
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$helper = $this->facebook->getRedirectLoginHelper(); |
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return $helper->getLoginUrl($this->facebookApiConfiguration->redirectUrl(), $params); |
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} |
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/** |
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* Grants a new access token |
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* |
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* @return CommonAccessToken |
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* @throws ThirdPartyConnectionFailedException |
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*/ |
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public function grantNewAccessToken() |
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{ |
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$helper = $this->facebook->getRedirectLoginHelper(); |
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try { |
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$accessToken = $helper->getAccessToken($this->facebookApiConfiguration->redirectUrl()); |
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$oAuth2Client = $this->facebook->getOAuth2Client(); |
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$accessToken = $oAuth2Client->getLongLivedAccessToken($accessToken); |
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return new CommonAccessToken($accessToken->getValue(), ThirdParty::FACEBOOK); |
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} catch (FacebookResponseException $ex) { |
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throw new ThirdPartyConnectionFailedException( |
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'Graph returned an error: ' . $ex->getMessage(), |
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$ex->getCode(), |
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$ex |
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); |
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} catch (FacebookSDKException $ex) { |
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throw new ThirdPartyConnectionFailedException( |
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'Facebook SDK returned an error: ' . $ex->getMessage(), |
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$ex->getCode(), |
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$ex |
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); |
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} |
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} |
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/** |
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* Use this to retrieve the current user's third party user data using there existing granted access token |
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* |
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* @param CommonAccessToken $accessToken |
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* @return ThirdPartyUser |
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* @throws NoThirdPartyEmailFoundException |
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* @throws ThirdPartyConnectionFailedException |
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*/ |
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public function getSelf(CommonAccessToken $accessToken) |
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{ |
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try { |
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$response = $this->facebook->get('/me?fields=id,first_name,last_name,email,gender', $accessToken->token()); |
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$graphUser = $response->getGraphUser(); |
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$thirdPartyEmail = $graphUser->getEmail(); |
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if (empty($thirdPartyEmail)) { |
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throw new NoThirdPartyEmailFoundException('An email address cannot be found from vendor'); |
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} |
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return new ThirdPartyUser( |
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$graphUser->getId(), |
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sprintf('%s %s', $graphUser->getFirstName(), $graphUser->getLastName()), |
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$thirdPartyEmail, |
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"http://graph.facebook.com/{$graphUser->getId()}/picture", |
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$graphUser->getGender() |
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); |
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} catch (FacebookResponseException $ex) { |
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throw new ThirdPartyConnectionFailedException( |
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'Graph returned an error: ' . $ex->getMessage(), |
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$ex->getCode(), |
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$ex |
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); |
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} catch (FacebookSDKException $ex) { |
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throw new ThirdPartyConnectionFailedException( |
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'Facebook SDK returned an error: ' . $ex->getMessage(), |
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$ex->getCode(), |
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$ex |
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); |
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} |
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} |
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/** |
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* Use this to revoke the access to the third party data. |
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* This will completely remove the access from the vendor side. |
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* |
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* @param CommonAccessToken $accessToken |
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* @return bool |
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*/ |
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public function revokeAccess(CommonAccessToken $accessToken) |
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{ |
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$mappedUser = $this->storageRepository->getUser($accessToken->email(), ThirdParty::FACEBOOK); |
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if (is_null($mappedUser)) { |
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return false; |
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} |
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$vendorData = $mappedUser->decodedVendorData(); |
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if (empty($vendorData[ThirdPartyUser::ID])) { |
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return false; |
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} |
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try { |
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$this->facebook->delete( |
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sprintf('/%s/permissions', $vendorData[ThirdPartyUser::ID]), |
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array(), |
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$accessToken->token() |
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); |
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} catch (FacebookResponseException $ex) { |
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return false; |
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} |
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return true; |
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} |
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} |
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tharangakothalawala /
sso
