119 lines
3.6 KiB
PHP
119 lines
3.6 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2013 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT);
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*
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*/
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use Zend\ServiceManager\ServiceLocatorAwareInterface;
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use oat\oatbox\service\ServiceManager;
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/**
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* Represents a Session on Generis.
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*
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* @access private
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* @author Joel Bout, <joel@taotesting.com>
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* @package generis
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*/
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abstract class common_session_SessionManager
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{
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const PHPSESSION_SESSION_KEY = 'common_session_Session';
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private static $session = null;
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/**
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* Retrurns the current session
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*
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* @throws common_exception_Error
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* @return common_session_Session
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*/
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public static function getSession()
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{
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if (is_null(self::$session)) {
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if (PHPSession::singleton()->hasAttribute(self::PHPSESSION_SESSION_KEY)) {
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$session = PHPSession::singleton()->getAttribute(self::PHPSESSION_SESSION_KEY);
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if (! $session instanceof common_session_Session) {
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throw new common_exception_Error('Non session stored in php-session');
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}
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self::$session = $session;
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} else {
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self::$session = new common_session_AnonymousSession();
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}
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}
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if (self::$session instanceof ServiceLocatorAwareInterface) {
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self::$session->setServiceLocator(ServiceManager::getServiceManager());
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}
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return self::$session;
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}
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/**
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* Starts a new session and stores it in the session if stateful
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*
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* @param common_session_Session $session
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* @return boolean
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*/
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public static function startSession(common_session_Session $session)
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{
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self::$session = $session;
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// do not start session in cli mode (testcase script)
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if (PHP_SAPI != 'cli') {
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if ($session instanceof common_session_StatefulSession) {
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// start session if not yet started
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if (session_id() === '') {
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session_name(GENERIS_SESSION_NAME);
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session_start();
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} else {
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// prevent session fixation.
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session_regenerate_id();
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}
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PHPSession::singleton()->setAttribute(self::PHPSESSION_SESSION_KEY, $session);
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}
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}
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return true;
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}
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/**
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* Ends the session by replacing it with an anonymous session
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*
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* @return boolean
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*/
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public static function endSession()
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{
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// clean session data.
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if (session_id() != '') {
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session_destroy();
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}
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return self::startSession(new common_session_AnonymousSession());
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}
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/**
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* Is the current session anonymous or associated to a user?
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*
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* @return boolean
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*/
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public static function isAnonymous()
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{
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return is_null(self::getSession()->getUserUri());
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}
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}
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