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<?php
/**
* ChronoCMS version 1.0
* Copyright (c) 2012 ChronoCMS.com, All rights reserved.
* Author: (ChronoCMS.com Team)
* license: Please read LICENSE.txt
* Visit http://www.ChronoCMS.com for regular updates and information.
**/
namespace GCore\Libs;
/* @copyright:ChronoEngine.com @license:GPLv2 */defined('_JEXEC') or die('Restricted access');
defined("GCORE_SITE") or die;
class Session {
protected static $instance;
var $_active = false;
var $_expired = false;
var $_destroyed = false;
var $_data = array();
var $_handler = null;
var $_lifetime = 15;
var $_encrypted = false;
var $_secure = false;
function __construct($handler = 'php', $params = array()){
if(\GCore\C::get('GSITE_PLATFORM') == ''){
$this->_initialize();
$this->_setParams($params);
$this->_setCookies();
$handler = !empty($handler) ? $handler : Base::getConfig('session_handler', 'php');
$params = !empty($params) ? $params : array('lifetime' => Base::getConfig('session_lifetime', 15));
//load handler
$this->_handler = SessionHandler::getInstance($handler, $params);
}
$this->_start();
$this->_data = &$_SESSION;
if(\GCore\C::get('GSITE_PLATFORM') == ''){
$this->_sync();
$this->_validate();
}
}
function __destruct(){
$this->close();
}
protected function _start($id = null){
if(!$this->_active AND !$this->get_id()){
if(!empty($id)){
session_id($id);
}
session_start();
$this->_active = true;
return true;
}
}
protected function _sync(){
if($this->is_alive()){
$last_active = $this->get('system.now', time(), 'gcore__system');
if($last_active + ($this->_lifetime * 60) < time()){
//session expired
$this->_expired = true;
$this->restart();
}
$this->set('system.last', $last_active, 'gcore__system');
$this->set('system.now', time(), 'gcore__system');
}
}
protected function _validate(){
$agent = $this->get('user.agent', null, 'gcore__system');
if(is_null($agent)){
$this->set('user.agent', $_SERVER['HTTP_USER_AGENT'], 'gcore__system');
return true;
}
if($agent != $_SERVER['HTTP_USER_AGENT']){
//incorrect agent
$this->restart();
}
}
protected function _initialize(){
if(session_id()){
session_unset();
session_destroy();
}
session_cache_limiter(false);
ini_set('session.save_handler', 'files');
ini_set('session.use_trans_sid', 0);
ini_set('session.use_only_cookies', '1');
}
protected function _setParams($params){
if(isset($params['name'])){
session_name($params['name']);
}else{
session_name(md5('gcore_'.GCORE_SITE.Base::getConfig('secret_token')));
}
if(isset($params['id'])){
session_id($params['id']);
}
if(isset($params['lifetime'])){
$this->_lifetime = $params['lifetime'];
}
ini_set('session.gc_maxlifetime', $this->_lifetime * 60);
if(!empty($params['encrypted'])){
$this->_encrypted = true;
}
if(!empty($params['secure'])){
$this->_secure = true;
}
}
protected function _setCookies(){
$cookie = session_get_cookie_params();
if ($this->_secure){
$cookie['secure'] = true;
}
if(strlen(Base::getConfig('cookie_domain', '')) > 0){
$cookie['domain'] = Base::getConfig('cookie_domain', '');
}
if(strlen(Base::getConfig('cookie_path', '')) > 0){
$cookie['path'] = Base::getConfig('cookie_path', '');
}
session_set_cookie_params($cookie['lifetime'], $cookie['path'], $cookie['domain'], $cookie['secure']);
}
public static function getInstance($handler = null, $params = array()){
if(!is_object(self::$instance)){
self::$instance = new Session($handler, $params);
}
return self::$instance;
}
function get_name(){
return session_name();
}
function get_id(){
return session_id();
}
function is_alive(){
if(\GCore\C::get('GSITE_PLATFORM') == ''){
if(!$this->_active OR $this->_expired OR $this->_destroyed){
return false;
}
}
return true;
}
function get($name, $default = null, $namespace = 'gcore'){
if(!$this->is_alive()){
return null;
}
$value = Arr::getVal($this->_data, explode('.', $namespace.'.'.$name));
if($value !== null){
return $value;
}
return $default;
}
function set($name, $value = null, $namespace = 'gcore'){
if(!$this->is_alive()){
return null;
}
$this->_data = Arr::setVal($this->_data, explode('.', $namespace.'.'.$name), $value);
return true;
}
function has($name, $namespace = 'gcore'){
if(!$this->is_alive()){
return null;
}
return (Arr::getVal($this->_data, explode('.', $namespace.'.'.$name)) !== null);
}
function clear($name, $namespace = 'gcore'){
if(!$this->is_alive()){
return null;
}
$this->_data = Arr::setVal($this->_data, explode('.', $namespace.'.'.$name), null);
return true;
}
function setFlash($type, $msg = '', $group = ''){
$flashes = $this->get('__FLASH__', array());
$path = array($type);
if(!empty($group)){
$path = array($type, $group);
}
$type_msgs = Arr::getVal($flashes, $path, array());
$type_msgs = array_merge($type_msgs, (array)$msg);
return $this->set('__FLASH__', Arr::setVal($flashes, $path, $type_msgs));
}
function getFlash($type = null){
$flashes = $this->get('__FLASH__', array());
$this->clear('__FLASH__');
if(!empty($type)){
if(!empty($flashes[$type])){
return $flashes[$type];
}
return array();
}else{
//get all
return $flashes;
}
}
function close(){
session_write_close();
}
function regenerate(){
session_regenerate_id(true);
}
function destroy(){
if($this->_destroyed === false){
if ($this->_destroyed = $this->_destroy()){
$this->_data = array();
}
}
return $this->_destroyed;
}
protected function _destroy(){
session_destroy();
$return = !session_id();
if($return AND isset($_COOKIE[session_name()])){
//remove any session presence in the cookies
setcookie(session_name(), '', 0, Base::getConfig('cookie_path', ''), Base::getConfig('cookie_domain', ''));
}
return $return;
}
function restart(){
if($this->_destroyed === false){
$this->destroy();
}
$this->_reset_flags();
return $this->_restart();
}
protected function _restart(){
$this->regenerate();
$return = $this->_start(Str::rand());
$this->_sync();
$this->_data = &$_SESSION;
return $return;
}
protected function _reset_flags(){
$this->_destroyed = false;
$this->_expired = false;
$this->_active = false;
}
}
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