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<?php declare(strict_types = 0);
/*
** Zabbix
** Copyright (C) 2001-2023 Zabbix SIA
**
** This program 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.
**
** This program 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 this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
/**
* Session wrapper uses cookie for session store.
*/
class CCookieSession implements SessionHandlerInterface {
/**
* Cookie name.
*/
public const COOKIE_NAME = ZBX_SESSION_NAME;
/**
* Class constructor. Set session handlers and start session.
*/
public function __construct() {
// Set use standard cookie PHPSESSID to false.
ini_set('session.use_cookies', '0');
session_set_save_handler([$this, 'open'], [$this, 'close'], [$this, 'read'], [$this, 'write'],
[$this, 'destroy'], [$this, 'gc']
);
}
/**
* @inheritDoc
*
* @return boolean
*/
public function close(): bool {
echo ob_get_clean();
return true;
}
/**
* @inheritDoc
*
* @param string $id
*
* @return boolean
*/
public function destroy($id): bool {
return CCookieHelper::unset(self::COOKIE_NAME);
}
/**
* @inheritDoc
*
* @param integer $maxlifetime
*
* @return integer
*/
#[\ReturnTypeWillChange]
public function gc($maxlifetime) {
return true;
}
/**
* @inheritDoc
*
* @param string $path
* @param string $name
*
* @return boolean
*/
public function open($path, $name): bool {
ob_start();
return session_status() === PHP_SESSION_ACTIVE;
}
/**
* @inheritDoc
*
* @param string $id
*
* @return string
*/
#[\ReturnTypeWillChange]
public function read($id) {
$session_data = json_decode($this->parseData(), true);
if (!is_array($session_data)) {
return '';
}
foreach ($session_data as $key => $value) {
CSessionHelper::set($key, $value);
}
return session_encode();
}
/**
* @inheritDoc
*
* @param string $id
* @param string $data
*
* @return boolean
*/
public function write($id, $data): bool {
session_decode($data);
$data = $this->prepareData(CSessionHelper::getAll());
return CCookieHelper::set(self::COOKIE_NAME, $data,
$this->isAutologinEnabled() ? time() + SEC_PER_MONTH : 0
);
}
/**
* Run session_start.
*
* @param string $sessionid
*
* @return boolean
*/
public function session_start(string $sessionid): bool {
if (headers_sent() || session_status() !== PHP_SESSION_NONE) {
return false;
}
session_id($sessionid);
return session_start();
}
/**
* Extract session id from session data.
*
* @return string|null
*/
public function extractSessionId(): ?string {
$session_data = $this->parseData();
if ($session_data === '') {
return null;
}
$session_data = json_decode($session_data, true);
if (!is_array($session_data) || !array_key_exists('sessionid', $session_data)) {
return null;
}
return $session_data['sessionid'];
}
/**
* Prepare session data.
*
* @param array $data
*
* @return string
*/
protected function prepareData(array $data): string {
return base64_encode(json_encode($data));
}
/**
* Parse session data.
*
* @return string
*/
protected function parseData(): string {
if (CCookieHelper::has(self::COOKIE_NAME)) {
return base64_decode(CCookieHelper::get(self::COOKIE_NAME));
}
return '';
}
protected function isAutologinEnabled(): bool {
return (CWebUser::$data['autologin'] === '1');
}
}
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