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<?php
/**
* Kunena Component
* @package Kunena.Framework
*
* @copyright (C) 2008 - 2014 Kunena Team. All rights reserved.
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
* @link http://www.kunena.org
**/
defined ( '_JEXEC' ) or die ();
/**
* Class KunenaSession
*/
class KunenaSession extends JObject
{
protected $_exists = false;
protected $_sessiontimeout = false;
private static $_instance;
public function __construct($identifier)
{
$this->load($identifier);
$now = JFactory::getDate()->toUnix();
if (!$this->currvisit) {
// For new users new indication displays 14 days
$this->lasttime = $now - 14*24*60*60; // 14 days ago
$this->currvisit = $now;
$this->readtopics = 0;
} else {
// For existing users new indication expires after 2 months
$monthAgo = $now - 61*24*60*60;
$this->lasttime = ($this->lasttime > $monthAgo ? $this->lasttime : $monthAgo);
}
}
public static function getInstance( $update=false, $userid = null )
{
if (!self::$_instance) {
$my = JFactory::getUser();
self::$_instance = new KunenaSession($userid !== null ? $userid : $my->id);
if ($update) self::$_instance->updateSessionInfo();
}
return self::$_instance;
}
/**
* Method to get the session table object
*
* This function uses a static variable to store the table name of the session table to
* it instantiates. You can call this function statically to set the table name if
* needed.
*
* @access public
* @param string $type The session table name to be used
* @param string $prefix The session table prefix to be used
* @return object The session table object
* @since 1.5
*/
public function getTable($type = 'KunenaSessions', $prefix = 'Table')
{
static $tabletype = null;
//Set a custom table type is defined
if ($tabletype === null || $type != $tabletype['name'] || $prefix != $tabletype['prefix']) {
$tabletype['name'] = $type;
$tabletype['prefix'] = $prefix;
}
// Create the user table object
return JTable::getInstance($tabletype['name'], $tabletype['prefix']);
}
/**
* Method to load a KunenaSession object by userid
*
* @access public
* @param int $userid The user id of the user to load
* @return boolean True on success
* @since 1.5
*/
public function load($userid)
{
// Create the user table object
$table = $this->getTable();
// Load the KunenaTableUser object based on the user id
if ($table->load($userid)) {
$this->_exists = true;
}
// Assuming all is well at this point lets bind the data
$this->setProperties($table->getProperties());
$this->userid = $userid;
return true;
}
/**
* Method to save the KunenaSession object to the database
*
* @access public
* @param boolean $updateOnly Save the object only if not a new session
* @return boolean True on success
* @since 1.5
*/
public function save($updateOnly = false)
{
// Do not save session for anonymous users
if (!$this->userid) {
return false;
}
// Create the user table object
$table = $this->getTable();
$table->bind($this->getProperties());
$table->exists($this->_exists);
// Check and store the object.
if (!$table->check()) {
$this->setError($table->getError());
return false;
}
//are we creating a new user
$isnew = !$this->_exists;
// If we aren't allowed to create new users return
if ($isnew && $updateOnly) {
return true;
}
//Store the user data in the database
if (!$result = $table->store()) {
$this->setError($table->getError());
}
// Set the id for the JUser object in case we created a new user.
if (empty($this->userid)) {
$this->userid = $table->get('userid');
}
return $result;
}
/**
* Method to delete the KunenaSession object from the database
*
* @access public
* @return boolean True on success
* @since 1.5
*/
public function delete()
{
// Create the user table object
$table = $this->getTable();
$result = $table->delete($this->userid);
if (!$result) {
$this->setError($table->getError());
}
return $result;
}
public function isNewUser()
{
return !$this->_exists;
}
public function isNewSession()
{
// perform session timeout check
$lifetime = max(intval(JFactory::getConfig()->get( 'config.lifetime' ))*60, intval(KunenaFactory::getConfig ()->sessiontimeout));
$this->_sessiontimeout = ($this->currvisit + $lifetime < JFactory::getDate()->toUnix());
return $this->_sessiontimeout;
}
public function markAllCategoriesRead()
{
$this->lasttime = JFactory::getDate()->toUnix();
$this->readtopics = 0;
}
public function updateSessionInfo()
{
// If this is a new session, reset the lasttime colum with the timestamp
// of the last saved currvisit - only after that can we reset currvisit to now before the store
if ($this->isNewSession())
{
$this->lasttime = $this->currvisit;
$this->readtopics = 0;
}
$this->currvisit = JFactory::getDate()->toUnix();
}
}