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<?php
/*
** Zabbix
** Copyright (C) 2001-2014 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, currently uses native PHP session.
*/
class CSession implements ArrayAccess {
/**
* Initialize session.
* Set cookie path to path to current URI without file.
*
* @throw Exception if cannot start session
*/
public function __construct() {
$path = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
// remove file name from path
$path = substr($path, 0, strrpos($path, '/') + 1);
session_set_cookie_params(0, $path, null, HTTPS);
if (!session_start()) {
throw new Exception('Cannot start session.');
}
}
/**
* Clears and implicitly flushes session.
*/
public function clear() {
$_SESSION = array();
session_write_close();
}
/**
* Sets session value by key offset.
*
* @param mixed $offset
* @param mixed $value
*/
public function offsetSet($offset, $value) {
$_SESSION[$offset] = $value;
}
/**
* Checks if session value exists (isset() calls).
*
* @param mixed $offset
*
* @return bool
*/
public function offsetExists($offset) {
return isset($_SESSION[$offset]);
}
/**
* Unsets session value (unset() calls).
*
* @param mixed $offset
*/
public function offsetUnset($offset) {
unset($_SESSION[$offset]);
}
/**
* Returns value stored in session.
*
* @param mixed $offset
*
* @return mixed|null
*/
public function offsetGet($offset) {
return isset($_SESSION[$offset]) ? $_SESSION[$offset] : null;
}
}
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