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<?php
namespace Nextend\Framework\Session;
use Nextend\Framework\Plugin;
use Nextend\Framework\Request\Request;
abstract class AbstractStorage {
protected static $expire = 86400; // 1 day
protected static $salt = 'nextendSalt';
protected $hash;
protected $storage = array();
public $storageChanged = false;
public function __construct($userIdentifier) {
$this->register();
$cookie = Request::$COOKIE->getCmd('nextendsession');
if ($cookie === '' || substr($cookie, 0, 2) != 'n2' || !preg_match('/^[a-f0-9]{32}$/', substr($cookie, 2))) {
$this->hash = 'n2' . md5(self::$salt . $userIdentifier);
setcookie('nextendsession', $this->hash, time() + self::$expire, Request::$SERVER->getVar('HTTP_HOST'));
Request::$COOKIE->set('nextendsession', $this->hash);
} else {
$this->hash = $cookie;
}
$this->load();
}
/**
* Load the whole session
* $this->storage = json_decode(result for $this->hash);
*/
protected abstract function load();
/**
* Store the whole session
* $this->hash json_encode($this->storage);
*/
protected abstract function store();
public function get($key, $default = '') {
return isset($this->storage[$key]) ? $this->storage[$key] : $default;
}
public function set($key, $value) {
$this->storageChanged = true;
$this->storage[$key] = $value;
}
public function delete($key) {
$this->storageChanged = true;
unset($this->storage[$key]);
}
/**
* Register our method for PHP shut down
*/
protected function register() {
Plugin::addAction('exit', array(
$this,
'shutdown'
));
}
/**
* When PHP shuts down, we have to save our session's data if the data changed
*/
public function shutdown() {
Plugin::doAction('beforeSessionSave');
if ($this->storageChanged) {
$this->store();
}
}
}