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<?php |
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/** |
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* OpauthController |
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* Wraps around Opauth for handling callbacks. |
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* The SS equivalent of "index.php" and "callback.php" in the Opauth package. |
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* @author Will Morgan <@willmorgan> |
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* @author Dan Hensby <@dhensby> |
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* @copyright Copyright (c) 2013, Better Brief LLP |
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*/ |
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class OpauthController extends ContentController { |
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private static |
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$allowed_actions = array( |
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'index', |
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'finished', |
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'profilecompletion', |
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'RegisterForm', |
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), |
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$url_handlers = array( |
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'finished' => 'finished', |
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); |
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/** |
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* Bitwise indicators to extensions what sort of action is happening |
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*/ |
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const |
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/** |
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* LOGIN = already a user with an OAuth ID |
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*/ |
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AUTH_FLAG_LOGIN = 2, |
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/** |
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* LINK = already a user, linking a new OAuth ID |
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*/ |
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AUTH_FLAG_LINK = 4, |
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/** |
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* REGISTER = new user, linking OAuth ID |
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*/ |
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AUTH_FLAG_REGISTER = 8; |
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protected |
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$registerForm; |
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/** |
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* Fake a Page_Controller by using that class as a failover |
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*/ |
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public function __construct($dataRecord = null) { |
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if(class_exists('Page_Controller')) { |
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$dataRecord = new Page_Controller($dataRecord); |
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} |
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parent::__construct($dataRecord); |
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} |
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/** |
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* This function only catches the request to pass it straight on. |
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* Opauth uses the last segment of the URL to identify the auth method. |
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* In _routes.yml we enforce a $Strategy request parameter to enforce this. |
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* Equivalent to "index.php" in the Opauth package. |
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* @todo: Validate the strategy works before delegating to Opauth. |
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*/ |
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public function index(SS_HTTPRequest $request) { |
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$strategy = $request->param('Strategy'); |
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$method = $request->param('StrategyMethod'); |
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if(!isset($strategy)) { |
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return Security::permissionFailure($this); |
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} |
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// If there is no method then we redirect (not a callback) |
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if(!isset($method)) { |
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// Redirects: |
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OpauthAuthenticator::opauth(true); |
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} |
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else { |
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return $this->oauthCallback($request); |
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} |
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} |
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/** |
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* This is executed when the Oauth provider redirects back to us |
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* Opauth handles everything sent back in this request. |
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*/ |
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protected function oauthCallback(SS_HTTPRequest $request) { |
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// Set up and run opauth with the correct params from the strategy: |
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OpauthAuthenticator::opauth(true, array( |
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'strategy' => $request->param('Strategy'), |
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'action' => $request->param('StrategyMethod'), |
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)); |
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} |
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/** |
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* Equivalent to "callback.php" in the Opauth package. |
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* If there is a problem with the response, we throw an HTTP error. |
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* When done validating, we return back to the Authenticator continue auth. |
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* @throws SS_HTTPResponse_Exception if any validation errors |
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*/ |
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public function finished(SS_HTTPRequest $request) { |
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$opauth = OpauthAuthenticator::opauth(false); |
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$response = $this->getOpauthResponse(); |
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if (!$response) { |
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$response = array(); |
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} |
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// Clear the response as it is only to be read once (if Session) |
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Session::clear('opauth'); |
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// Handle all Opauth validation in this handy function |
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try { |
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$this->validateOpauthResponse($opauth, $response); |
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} |
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catch(OpauthValidationException $e) { |
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return $this->handleOpauthException($e); |
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} |
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$identity = OpauthIdentity::factory($response); |
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$member = $identity->findOrCreateMember(); |
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// If the member exists, associate it with the identity and log in |
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if($member->isInDB() && $member->validate()->valid()) { |
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if(!$identity->exists()) { |
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$identity->write(); |
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$flag = self::AUTH_FLAG_LINK; |
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} |
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else { |
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$flag = self::AUTH_FLAG_LOGIN; |
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} |
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Session::set('OpauthIdentityID', $identity->ID); |
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} |
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else { |
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$flag = self::AUTH_FLAG_REGISTER; |
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// Write the identity |
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$identity->write(); |
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// Keep a note of the identity ID |
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Session::set('OpauthIdentityID', $identity->ID); |
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// Even if written, check validation - we might not have full fields |
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$validationResult = $member->validate(); |
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if(!$validationResult->valid()) { |
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// Set up the register form before it's output |
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$regForm = $this->RegisterForm(); |
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$regForm->loadDataFrom($member); |
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$regForm->setSessionData($member); |
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$regForm->validate(); |
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return $this->redirect($this->Link('profilecompletion')); |
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} |
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else { |
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$member->extend('onBeforeOpauthRegister'); |
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$member->write(); |
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$identity->MemberID = $member->ID; |
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$identity->write(); |
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} |
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} |
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return $this->loginAndRedirect($member, $identity, $flag); |
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} |
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/** |
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* @param Member |
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* @param OpauthIdentity |
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* @param int $mode One or more AUTH_FLAGs. |
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*/ |
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protected function loginAndRedirect(Member $member, OpauthIdentity $identity, $mode) { |
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// Back up the BackURL as Member::logIn regenerates the session |
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$backURL = Session::get('BackURL'); |
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// Check if we can log in: |
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$canLogIn = $member->canLogIn(); |
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if(!$canLogIn->valid()) { |
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$extendedURLs = $this->extend('getCantLoginBackURL', $member, $identity, $canLogIn, $mode); |
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if(count($extendedURLs)) { |
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$redirectURL = array_pop($extendedURLs); |
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$this->redirect($redirectURL, 302); |
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return; |
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} |
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Security::permissionFailure($this, $canLogIn->message()); |
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return; |
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} |
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// Decide where to go afterwards... |
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if(!empty($backURL)) { |
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$redirectURL = $backURL; |
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} |
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else { |
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$redirectURL = Security::config()->default_login_dest; |
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} |
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$extendedURLs = $this->extend('getSuccessBackURL', $member, $identity, $redirectURL, $mode); |
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if(count($extendedURLs)) { |
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$redirectURL = array_pop($extendedURLs); |
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} |
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$member->logIn(); |
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// Clear any identity ID |
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Session::clear('OpauthIdentityID'); |
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// Clear the BackURL |
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Session::clear('BackURL'); |
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return $this->redirect($redirectURL); |
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} |
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public function profilecompletion(SS_HTTPRequest $request = null) { |
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if(!Session::get('OpauthIdentityID')) { |
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Security::permissionFailure($this); |
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} |
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// Redirect to complete register step by adding in extra info |
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return $this->renderWith(array( |
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'OpauthController_profilecompletion', |
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'Security_profilecompletion', |
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'Page', |
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) |
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); |
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} |
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public function RegisterForm(SS_HTTPRequest $request = null, Member $member = null, $result = null) { |
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if(!isset($this->registerForm)) { |
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$form = Injector::inst()->create('OpauthRegisterForm', $this, 'RegisterForm', $result); |
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$form->populateFromSources($request, $member, $result); |
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// Set manually the form action due to how routing works |
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$form->setFormAction(Controller::join_links( |
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self::config()->opauth_path, |
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'RegisterForm' |
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)); |
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$this->registerForm = $form; |
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} |
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else { |
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$this->registerForm->populateFromSources($request, $member, $result); |
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} |
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return $this->registerForm; |
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} |
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public function doCompleteRegister($data, $form, $request) { |
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$member = new Member(); |
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$form->saveInto($member); |
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$identityID = Session::get('OpauthIdentityID'); |
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$identity = DataObject::get_by_id('OpauthIdentity', $identityID); |
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$validationResult = $member->validate(); |
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$existing = Member::get()->filter('Email', $member->Email)->first(); |
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$emailCollision = $existing && $existing->exists(); |
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// If not valid then we have to manually transpose errors to the form |
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if(!$validationResult->valid() || $emailCollision) { |
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$errors = $validationResult->messageList(); |
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$form->setRequiredFields($errors); |
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// Mandatory check on the email address |
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if($emailCollision) { |
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$form->addErrorMessage('Email', _t( |
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'OpauthRegisterForm.ERROREMAILTAKEN', |
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'It looks like this email has already been used' |
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), 'required'); |
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} |
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return $this->redirect('profilecompletion'); |
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} |
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// If valid then write and redirect |
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else { |
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$member->extend('onBeforeOpauthRegister'); |
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$member->write(); |
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$identity->MemberID = $member->ID; |
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$identity->write(); |
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return $this->loginAndRedirect($member, $identity, self::AUTH_FLAG_REGISTER); |
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} |
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} |
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/** |
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* Returns the response from the Oauth callback. |
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* @throws InvalidArugmentException |
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* @return array The response |
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*/ |
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protected function getOpauthResponse() { |
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$config = OpauthAuthenticator::get_opauth_config(); |
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$transportMethod = $config['callback_transport']; |
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switch($transportMethod) { |
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case 'session': |
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return $this->getResponseFromSession(); |
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case 'get': |
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case 'post': |
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return $this->getResponseFromRequest($transportMethod); |
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default: |
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throw new InvalidArgumentException('Invalid transport method: ' . $transportMethod); |
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} |
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} |
293
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294
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/** |
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* Validates the Oauth response for Opauth. |
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* @throws InvalidArgumentException |
297
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*/ |
298
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protected function validateOpauthResponse($opauth, $response) { |
299
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if(!empty($response['error'])) { |
300
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throw new OpauthValidationException('Oauth provider error', 1, $response['error']); |
301
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} |
302
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303
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// Required components within the response |
304
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$this->requireResponseComponents( |
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array('auth', 'timestamp', 'signature'), |
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$response |
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); |
308
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309
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// More required components within the auth section... |
310
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$this->requireResponseComponents( |
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array('provider', 'uid'), |
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$response['auth'] |
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); |
314
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315
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$invalidReason = ''; |
316
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317
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/** |
318
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* @todo: improve this signature check. it's a bit weak. |
319
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*/ |
320
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if(!$opauth->validate( |
321
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sha1(print_r($response['auth'], true)), |
322
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$response['timestamp'], |
323
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$response['signature'], |
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$invalidReason |
325
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)) { |
326
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throw new OpauthValidationException('Invalid auth response', 3, $invalidReason); |
327
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} |
328
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} |
329
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330
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/** |
331
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* Shorthand for quickly finding missing components and complaining about it |
332
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* @throws InvalidArgumentException |
333
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*/ |
334
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protected function requireResponseComponents(array $components, $response) { |
335
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foreach($components as $component) { |
336
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if(empty($response[$component])) { |
337
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throw new OpauthValidationException('Required component missing', 2, $component); |
338
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} |
339
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} |
340
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} |
341
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342
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/** |
343
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* @return array Opauth response from session |
344
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*/ |
345
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protected function getResponseFromSession() { |
346
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return Session::get('opauth'); |
347
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} |
348
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349
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/** |
350
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* @param OpauthValidationException $e |
351
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*/ |
352
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protected function handleOpauthException(OpauthValidationException $e) { |
353
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$data = $e->getData(); |
354
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$loginFormName = 'OpauthLoginForm_LoginForm'; |
355
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$message = ''; |
356
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switch($e->getCode()) { |
357
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case 1: // provider error |
358
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$message = _t( |
359
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'OpauthLoginForm.OAUTHFAILURE', |
360
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'There was a problem logging in with {provider}.', |
361
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array( |
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362
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'provider' => $data['provider'], |
363
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) |
364
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); |
365
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break; |
366
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case 2: // validation error |
367
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case 3: // invalid auth response |
368
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$message = _t( |
369
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'OpauthLoginForm.RESPONSEVALIDATIONFAILURE', |
370
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'There was a problem logging in - {message}', |
371
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array( |
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372
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'message' => $e->getMessage(), |
373
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) |
374
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); |
375
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break; |
376
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|
} |
377
|
|
|
// Set form message, redirect to login with permission failure |
378
|
|
|
Form::messageForForm($loginFormName, $message, 'bad'); |
379
|
|
|
// always redirect to login |
380
|
|
|
Security::permissionFailure($this, $message); |
381
|
|
|
} |
382
|
|
|
|
383
|
|
|
/** |
384
|
|
|
* Looks at $method (GET, POST, PUT etc) for the response. |
385
|
|
|
* @return array Opauth response |
386
|
|
|
*/ |
387
|
|
|
protected function getResponseFromRequest($method) { |
388
|
|
|
return unserialize(base64_decode($this->request->{$method.'Var'}('opauth'))); |
389
|
|
|
} |
390
|
|
|
|
391
|
|
|
public function Link($action = null) { |
392
|
|
|
return Controller::join_links( |
393
|
|
|
self::config()->opauth_path, |
394
|
|
|
$action |
395
|
|
|
); |
396
|
|
|
} |
397
|
|
|
|
398
|
|
|
/** |
399
|
|
|
* 'path' param for use in Opauth's config |
400
|
|
|
* MUST have trailling slash for Opauth needs |
401
|
|
|
* @return string |
402
|
|
|
*/ |
403
|
|
|
public static function get_path() { |
404
|
|
|
return Controller::join_links( |
405
|
|
|
self::config()->opauth_path, |
406
|
|
|
'strategy/' |
407
|
|
|
); |
408
|
|
|
} |
409
|
|
|
|
410
|
|
|
/** |
411
|
|
|
* 'callback_url' param for use in Opauth's config |
412
|
|
|
* MUST have trailling slash for Opauth needs |
413
|
|
|
* @return string |
414
|
|
|
*/ |
415
|
|
|
public static function get_callback_path() { |
416
|
|
|
return Controller::join_links( |
417
|
|
|
self::config()->opauth_path, |
418
|
|
|
'finished/' |
419
|
|
|
); |
420
|
|
|
} |
421
|
|
|
|
422
|
|
|
////**** Template variables ****//// |
423
|
|
|
function Title() { |
|
|
|
|
424
|
|
|
if($this->action == 'profilecompletion') { |
425
|
|
|
return _t('OpauthController.PROFILECOMPLETIONTITLE', 'Complete your profile'); |
426
|
|
|
} |
427
|
|
|
return _t('OpauthController.TITLE', 'Social Login'); |
428
|
|
|
} |
429
|
|
|
|
430
|
|
|
public function Form() { |
431
|
|
|
return $this->RegisterForm(); |
432
|
|
|
} |
433
|
|
|
////**** END Template variables ****//// |
434
|
|
|
|
435
|
|
|
} |
436
|
|
|
|
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.