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diff --git a/program/lib/Roundcube/rcube_session_db.php b/program/lib/Roundcube/rcube_session_db.php
index 4d94f43ff..a814c2b9b 100644
--- a/program/lib/Roundcube/rcube_session_db.php
+++ b/program/lib/Roundcube/rcube_session_db.php
@@ -1,174 +1,175 @@
<?php
/*
+-----------------------------------------------------------------------+
| This file is part of the Roundcube Webmail client |
| Copyright (C) 2005-2014, The Roundcube Dev Team |
| Copyright (C) 2011, Kolab Systems AG |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
| See the README file for a full license statement. |
| |
| PURPOSE: |
| Provide database supported session management |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
| Author: Aleksander Machniak <alec@alec.pl> |
| Author: Cor Bosman <cor@roundcu.be> |
+-----------------------------------------------------------------------+
*/
/**
* Class to provide database session storage
*
* @package Framework
* @subpackage Core
* @author Thomas Bruederli <roundcube@gmail.com>
* @author Aleksander Machniak <alec@alec.pl>
* @author Cor Bosman <cor@roundcu.be>
*/
class rcube_session_db extends rcube_session
{
private $db;
private $table_name;
/**
* @param Object $config
*/
public function __construct($config)
{
parent::__construct($config);
// get db instance
$this->db = rcube::get_instance()->get_dbh();
// session table name
$this->table_name = $this->db->table_name('session', true);
// register sessions handler
$this->register_session_handler();
// register db gc handler
$this->register_gc_handler(array($this, 'gc_db'));
}
/**
* @param $save_path
* @param $session_name
* @return bool
*/
public function open($save_path, $session_name)
{
return true;
}
/**
* @return bool
*/
public function close()
{
return true;
}
/**
* Handler for session_destroy()
*
* @param $key
* @return bool
*/
public function destroy($key)
{
if ($key) {
$this->db->query("DELETE FROM {$this->table_name} WHERE `sess_id` = ?", $key);
}
return true;
}
/**
* Read session data from database
*
* @param string Session ID
*
* @return string Session vars
*/
public function read($key)
{
$sql_result = $this->db->query(
"SELECT `vars`, `ip`, `changed`, " . $this->db->now() . " AS ts"
. " FROM {$this->table_name} WHERE `sess_id` = ?", $key);
if ($sql_result && ($sql_arr = $this->db->fetch_assoc($sql_result))) {
$this->time_diff = time() - strtotime($sql_arr['ts']);
$this->changed = strtotime($sql_arr['changed']);
$this->ip = $sql_arr['ip'];
$this->vars = base64_decode($sql_arr['vars']);
$this->key = $key;
return !empty($this->vars) ? (string) $this->vars : '';
}
return null;
}
/**
* insert new data into db session store
*
* @param $key
* @param $vars
* @return bool
*/
public function write($key, $vars)
{
$now = $this->db->now();
$this->db->query("INSERT INTO {$this->table_name}"
. " (`sess_id`, `vars`, `ip`, `created`, `changed`)"
. " VALUES (?, ?, ?, $now, $now)",
$key, base64_encode($vars), (string)$this->ip);
return true;
}
/**
* update session data
*
* @param $key
* @param $newvars
* @param $oldvars
*
* @return bool
*/
public function update($key, $newvars, $oldvars)
{
- $now = $this->db->now();
+ $now = $this->db->now();
+ $ts = microtime(true);
// if new and old data are not the same, update data
// else update expire timestamp only when certain conditions are met
if ($newvars !== $oldvars) {
$this->db->query("UPDATE {$this->table_name} "
. "SET `changed` = $now, `vars` = ? WHERE `sess_id` = ?",
base64_encode($newvars), $key);
}
else if ($ts - $this->changed + $this->time_diff > $this->lifetime / 2) {
$this->db->query("UPDATE {$this->table_name} SET `changed` = $now"
. " WHERE `sess_id` = ?", $key);
}
return true;
}
/**
* Clean up db sessions.
*/
public function gc_db()
{
// just clean all old sessions when this GC is called
$this->db->query("DELETE FROM " . $this->db->table_name('session')
. " WHERE changed < " . $this->db->now(-$this->gc_enabled));
$this->log("Session GC (DB): remove records < " . date('Y-m-d H:i:s', time() - $this->gc_enabled) . '; rows = ' . intval($this->db->affected_rows()));
}
}
\ No newline at end of file

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