145 lines
3.3 KiB
PHP
145 lines
3.3 KiB
PHP
<?php
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/**
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* Piwik - free/libre analytics platform
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*
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* @link http://piwik.org
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* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
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*
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*/
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namespace Piwik\Session\SaveHandler;
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use Piwik\Db;
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use Zend_Session;
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use Zend_Session_SaveHandler_Interface;
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/**
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* Database-backed session save handler
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*
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*/
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class DbTable implements Zend_Session_SaveHandler_Interface
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{
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protected $config;
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protected $maxLifetime;
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/**
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* @param array $config
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*/
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public function __construct($config)
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{
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$this->config = $config;
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$this->maxLifetime = ini_get('session.gc_maxlifetime');
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}
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/**
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* Destructor
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*
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* @return void
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*/
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public function __destruct()
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{
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Zend_Session::writeClose();
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}
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/**
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* Open Session - retrieve resources
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*
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* @param string $save_path
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* @param string $name
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* @return boolean
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*/
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public function open($save_path, $name)
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{
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Db::get()->getConnection();
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return true;
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}
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/**
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* Close Session - free resources
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*
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* @return boolean
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*/
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public function close()
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{
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return true;
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}
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/**
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* Read session data
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*
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* @param string $id
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* @return string
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*/
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public function read($id)
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{
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$sql = 'SELECT ' . $this->config['dataColumn'] . ' FROM ' . $this->config['name']
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. ' WHERE ' . $this->config['primary'] . ' = ?'
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. ' AND ' . $this->config['modifiedColumn'] . ' + ' . $this->config['lifetimeColumn'] . ' >= ?';
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$result = Db::get()->fetchOne($sql, array($id, time()));
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if (!$result) {
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$result = '';
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}
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return $result;
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}
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/**
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* Write Session - commit data to resource
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*
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* @param string $id
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* @param mixed $data
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* @return boolean
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*/
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public function write($id, $data)
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{
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$sql = 'INSERT INTO ' . $this->config['name']
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. ' (' . $this->config['primary'] . ','
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. $this->config['modifiedColumn'] . ','
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. $this->config['lifetimeColumn'] . ','
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. $this->config['dataColumn'] . ')'
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. ' VALUES (?,?,?,?)'
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. ' ON DUPLICATE KEY UPDATE '
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. $this->config['modifiedColumn'] . ' = ?,'
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. $this->config['lifetimeColumn'] . ' = ?,'
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. $this->config['dataColumn'] . ' = ?';
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Db::get()->query($sql, array($id, time(), $this->maxLifetime, $data, time(), $this->maxLifetime, $data));
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return true;
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}
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/**
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* Destroy Session - remove data from resource for
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* given session id
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*
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* @param string $id
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* @return boolean
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*/
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public function destroy($id)
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{
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$sql = 'DELETE FROM ' . $this->config['name'] . ' WHERE ' . $this->config['primary'] . ' = ?';
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Db::get()->query($sql, array($id));
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return true;
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}
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/**
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* Garbage Collection - remove old session data older
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* than $maxlifetime (in seconds)
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*
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* @param int $maxlifetime timestamp in seconds
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* @return bool always true
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*/
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public function gc($maxlifetime)
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{
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$sql = 'DELETE FROM ' . $this->config['name']
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. ' WHERE ' . $this->config['modifiedColumn'] . ' + ' . $this->config['lifetimeColumn'] . ' < ?';
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Db::get()->query($sql, array(time()));
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return true;
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}
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}
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