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<?php |
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namespace SilverStripe\Security\MemberAuthenticator; |
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use SilverStripe\Control\Controller; |
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use SilverStripe\Control\Director; |
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use SilverStripe\Control\HTTPResponse; |
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use SilverStripe\Control\RequestHandler; |
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use SilverStripe\Core\Injector\Injector; |
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use SilverStripe\ORM\ValidationResult; |
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use SilverStripe\Security\IdentityStore; |
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use SilverStripe\Security\LogoutForm; |
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use SilverStripe\Security\Member; |
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use SilverStripe\Security\Security; |
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use SilverStripe\Security\SecurityToken; |
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/** |
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* Class LogoutHandler handles logging out Members from their session and/or cookie. |
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* The logout process destroys all traces of the member on the server (not the actual computer user |
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* at the other end of the line, don't worry) |
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* |
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*/ |
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class LogoutHandler extends RequestHandler |
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{ |
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/** |
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* @var array |
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*/ |
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private static $url_handlers = [ |
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'' => 'logout' |
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]; |
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/** |
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* @var array |
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*/ |
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private static $allowed_actions = [ |
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'logout', |
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'LogoutForm' |
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]; |
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/** |
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* Log out form handler method |
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* |
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* This method is called when the user clicks on "logout" on the form |
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* created when the parameter <i>$checkCurrentUser</i> of the |
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* {@link __construct constructor} was set to TRUE and the user was |
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* currently logged in. |
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* |
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* @return array|HTTPResponse |
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*/ |
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public function logout() |
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{ |
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$member = Security::getCurrentUser(); |
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// If the user doesn't have a security token, show them a form where they can get one. |
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// This protects against nuisance CSRF attacks to log out users. |
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if ($member && !SecurityToken::inst()->checkRequest($this->getRequest())) { |
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Security::singleton()->setSessionMessage( |
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_t( |
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'SilverStripe\\Security\\Security.CONFIRMLOGOUT', |
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"Please click the button below to confirm that you wish to log out." |
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), |
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ValidationResult::TYPE_WARNING |
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); |
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return [ |
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'Form' => $this->logoutForm() |
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]; |
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} |
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return $this->doLogOut($member); |
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} |
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/** |
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* @return LogoutForm |
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*/ |
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public function logoutForm() |
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{ |
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return LogoutForm::create($this); |
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} |
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/** |
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* @param Member $member |
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* @return HTTPResponse |
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*/ |
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public function doLogOut($member) |
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{ |
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$this->extend('beforeLogout'); |
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if ($member instanceof Member) { |
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Injector::inst()->get(IdentityStore::class)->logOut($this->getRequest()); |
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} |
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if (Security::getCurrentUser()) { |
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$this->extend('failedLogout'); |
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} else { |
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$this->extend('afterLogout'); |
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} |
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return $this->redirectAfterLogout(); |
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} |
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/** |
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* @return HTTPResponse |
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*/ |
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protected function redirectAfterLogout() |
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{ |
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$backURL = $this->getBackURL(); |
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if ($backURL) { |
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return $this->redirect($backURL); |
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} |
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$link = Security::config()->get('login_url'); |
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$referer = $this->getReturnReferer(); |
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if ($referer) { |
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$link = Controller::join_links($link, '?' . http_build_query([ |
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'BackURL' => Director::makeRelative($referer) |
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])); |
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} |
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return $this->redirect($link); |
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} |
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} |
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silverstripe /
silverstripe-framework
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