Your IP : 216.73.216.108
<?php
# ***** BEGIN LICENSE BLOCK *****
# This file is part of Clearbricks.
# Copyright (c) 2006 Olivier Meunier and contributors. All rights
# reserved.
#
# Clearbricks is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# Clearbricks is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Clearbricks; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# ***** END LICENSE BLOCK *****
class sessionDB
{
private $con;
private $table;
private $cookie_name;
private $cookie_path;
private $ttl = '-120 minutes';
public function __construct(&$con,$table,$cookie_name,$cookie_path=null,$cookie_domain=null,$cookie_secure=false)
{
$this->con =& $con;
$this->table = $table;
$this->cookie_name = $cookie_name;
$this->cookie_path = is_null($cookie_path) ? '/' : $cookie_path;
$this->cookie_domain = $cookie_domain;
$this->cookie_secure = $cookie_secure;
if(function_exists('ini_set'))
{
@ini_set('session.use_cookies','1');
@ini_set('session.use_only_cookies','1');
@ini_set('url_rewriter.tags','');
@ini_set('session.use_trans_sid','0');
@ini_set('session.cookie_path',$this->cookie_path);
@ini_set('session.cookie_domain',$this->cookie_domain);
@ini_set('session.cookie_secure',$this->cookie_secure);
}
}
public function __destruct()
{
if (isset($_SESSION)) {
session_write_close();
}
}
public function start()
{
session_set_save_handler(
array(&$this, '_open'),
array(&$this, '_close'),
array(&$this, '_read'),
array(&$this, '_write'),
array(&$this, '_destroy'),
array(&$this, '_gc')
);
if (!isset($_COOKIE[$this->cookie_name])) {
session_id(sha1(uniqid(rand(),true)));
}
session_name($this->cookie_name);
session_start();
}
public function destroy()
{
$_SESSION = array();
session_unset();
session_destroy();
setcookie(session_name(),false,-600,$this->cookie_path,$this->cookie_domain,$this->cookie_secure);
}
public function _open($path,$name)
{
return true;
}
public function _close()
{
$this->_gc();
return true;
}
public function _read($ses_id)
{
$strReq = 'SELECT ses_value FROM '.$this->table.' '.
'WHERE ses_id = \''.$this->checkID($ses_id).'\' ';
$rs = $this->con->select($strReq);
if ($rs->isEmpty()) {
return '';
} else {
return $rs->f('ses_value');
}
}
public function _write($ses_id, $data)
{
$strReq = 'SELECT ses_id '.
'FROM '.$this->table.' '.
"WHERE ses_id = '".$this->checkID($ses_id)."' ";
$rs = $this->con->select($strReq);
$cur = $this->con->openCursor($this->table);
$cur->ses_time = (string) time();
$cur->ses_value = (string) $data;
if (!$rs->isEmpty())
{
$cur->update("WHERE ses_id = '".$this->checkID($ses_id)."' ");
}
else
{
$cur->ses_id = (string) $this->checkID($ses_id);
$cur->ses_start = (string) time();
$cur->insert();
}
return true;
}
public function _destroy($ses_id)
{
$strReq = 'DELETE FROM '.$this->table.' '.
'WHERE ses_id = \''.$this->checkID($ses_id).'\' ';
$this->con->execute($strReq);
$this->_optimize();
return true;
}
public function _gc()
{
$ses_life = strtotime($this->ttl);
$strReq = 'DELETE FROM '.$this->table.' '.
'WHERE ses_time < '.$ses_life.' ';
$this->con->execute($strReq);
if ($this->con->changes() > 0) {
$this->_optimize();
}
return true;
}
private function _optimize()
{
$this->con->vacuum($this->table);
}
private function checkID($id)
{
if (!preg_match('/^([0-9a-f]{40})$/i',$id)) {
return null;
}
return $id;
}
}
?>