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Charlie Root
2023-03-20 12:18:38 +01:00
commit a096ce07cf
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dotclear._no/inc/libs/clearbricks/session.db/class.session.db.php Normal file
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<?php
/**
* @class sessionDB
* @brief Database Session Handler
*
* This class allows you to handle session data in database.
*
* @package Clearbricks
* @subpackage Session
*
* @copyright Olivier Meunier & Association Dotclear
* @copyright GPL-2.0-only
*/
class sessionDB
{
private $con;
private $table;
private $cookie_name;
private $cookie_path;
private $ttl = '-120 minutes';
private $transient = false;
/**
* Constructor
*
* This method creates an instance of sessionDB class.
*
* @param dbLayer &$con dbLayer inherited database instance
* @param string $table Table name
* @param string $cookie_name Session cookie name
* @param string $cookie_path Session cookie path
* @param string $cookie_domain Session cookie domaine
* @param boolean $cookie_secure Session cookie is available only through SSL if true
* @param string $ttl TTL (default -120 minutes)
* @param boolean $transient Transient session : no db optimize on session destruction if true
*/
public function __construct($con, $table, $cookie_name,
$cookie_path = null, $cookie_domain = null, $cookie_secure = false, $ttl = null, $transient = 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 = $cookie_secure;
if (!is_null($ttl)) {
$this->ttl = $ttl;
}
$this->transient = $transient;
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', $this->cookie_secure);
}
}
/**
* Destructor
*
* This method calls session_write_close PHP function.
*/
public function __destruct()
{
if (isset($_SESSION)) {
session_write_close();
}
}
/**
* Session Start
*/
public function start()
{
session_set_save_handler(
[&$this, '_open'],
[&$this, '_close'],
[&$this, '_read'],
[&$this, '_write'],
[&$this, '_destroy'],
[&$this, '_gc']
);
if (isset($_SESSION) && session_name() != $this->cookie_name) {
$this->destroy();
}
if (!isset($_COOKIE[$this->cookie_name])) {
session_id(sha1(uniqid(rand(), true)));
}
session_name($this->cookie_name);
session_start();
}
/**
* Session Destroy
*
* This method destroies all session data and removes cookie.
*/
public function destroy()
{
$_SESSION = [];
session_unset();
session_destroy();
call_user_func_array('setcookie', $this->getCookieParameters(false, -600));
}
/**
* Session Transient
*
* This method set the transient flag of the session
*
* @param boolean $transient Session transient flag
*/
public function setTransientSession($transient = false)
{
$this->transient = $transient;
}
/**
* Session Cookie
*
* This method returns an array of all session cookie parameters.
*
* @param mixed $value Cookie value
* @param integer $expire Cookie expiration timestamp
*/
public function getCookieParameters($value = null, $expire = 0)
{
return [
session_name(),
$value,
$expire,
$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);
if (!$this->transient) {
$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;
}
return $id;
}
}