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<?php
namespace {
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Session
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Namespace.php 23775 2011-03-01 17:25:24Z ralph $
* @since Preview Release 0.2
*/
/**
* @see Zend_Session
*/
// require_once 'Zend/Session.php';
/**
* @see Zend_Session_Abstract
*/
// require_once 'Zend/Session/Abstract.php';
/**
* Zend_Session_Namespace
*
* @category Zend
* @package Zend_Session
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Session_Namespace extends \Zend_Session_Abstract implements \IteratorAggregate
{
/**
* used as option to constructor to prevent additional instances to the same namespace
*/
const SINGLE_INSTANCE = \true;
/**
* Namespace - which namespace this instance of zend-session is saving-to/getting-from
*
* @var string
*/
protected $_namespace = "Default";
/**
* Namespace locking mechanism
*
* @var array
*/
protected static $_namespaceLocks = array();
/**
* Single instance namespace array to ensure data security.
*
* @var array
*/
protected static $_singleInstances = array();
/**
* resetSingleInstance()
*
* @param string $namespaceName
* @return null
*/
public static function resetSingleInstance($namespaceName = null)
{
if ($namespaceName != null) {
if (\array_key_exists($namespaceName, self::$_singleInstances)) {
unset(self::$_singleInstances[$namespaceName]);
}
return;
}
self::$_singleInstances = array();
return;
}
/**
* __construct() - Returns an instance object bound to a particular, isolated section
* of the session, identified by $namespace name (defaulting to 'Default').
* The optional argument $singleInstance will prevent construction of additional
* instance objects acting as accessors to this $namespace.
*
* @param string $namespace - programmatic name of the requested namespace
* @param bool $singleInstance - prevent creation of additional accessor instance objects for this namespace
* @return void
*/
public function __construct($namespace = 'Default', $singleInstance = \false)
{
if ($namespace === '') {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception('Session namespace must be a non-empty string.');
}
if ($namespace[0] == "_") {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception('Session namespace must not start with an underscore.');
}
if (\preg_match('#(^[0-9])#i', $namespace[0])) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception('Session namespace must not start with a number.');
}
if (isset(self::$_singleInstances[$namespace])) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception("A session namespace object already exists for this namespace ('{$namespace}'), and no additional accessors (session namespace objects) for this namespace are permitted.");
}
if ($singleInstance === \true) {
self::$_singleInstances[$namespace] = \true;
}
$this->_namespace = $namespace;
// Process metadata specific only to this namespace.
\Zend_Session::start(\true);
// attempt auto-start (throws exception if strict option set)
if (self::$_readable === \false) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception(self::_THROW_NOT_READABLE_MSG);
}
if (!isset($_SESSION['__ZF'])) {
return;
// no further processing needed
}
// do not allow write access to namespaces, after stop() or writeClose()
if (parent::$_writable === \true) {
if (isset($_SESSION['__ZF'][$namespace])) {
// Expire Namespace by Namespace Hop (ENNH)
if (isset($_SESSION['__ZF'][$namespace]['ENNH'])) {
$_SESSION['__ZF'][$namespace]['ENNH']--;
if ($_SESSION['__ZF'][$namespace]['ENNH'] === 0) {
if (isset($_SESSION[$namespace])) {
self::$_expiringData[$namespace] = $_SESSION[$namespace];
unset($_SESSION[$namespace]);
}
unset($_SESSION['__ZF'][$namespace]);
}
}
// Expire Namespace Variables by Namespace Hop (ENVNH)
if (isset($_SESSION['__ZF'][$namespace]['ENVNH'])) {
foreach ($_SESSION['__ZF'][$namespace]['ENVNH'] as $variable => $hops) {
$_SESSION['__ZF'][$namespace]['ENVNH'][$variable]--;
if ($_SESSION['__ZF'][$namespace]['ENVNH'][$variable] === 0) {
if (isset($_SESSION[$namespace][$variable])) {
self::$_expiringData[$namespace][$variable] = $_SESSION[$namespace][$variable];
unset($_SESSION[$namespace][$variable]);
}
unset($_SESSION['__ZF'][$namespace]['ENVNH'][$variable]);
}
}
if (empty($_SESSION['__ZF'][$namespace]['ENVNH'])) {
unset($_SESSION['__ZF'][$namespace]['ENVNH']);
}
}
}
if (empty($_SESSION['__ZF'][$namespace])) {
unset($_SESSION['__ZF'][$namespace]);
}
if (empty($_SESSION['__ZF'])) {
unset($_SESSION['__ZF']);
}
}
}
/**
* getIterator() - return an iteratable object for use in foreach and the like,
* this completes the IteratorAggregate interface
*
* @return ArrayObject - iteratable container of the namespace contents
*/
public function getIterator() : \ArrayObject
{
return new \ArrayObject(parent::_namespaceGetAll($this->_namespace));
}
/**
* lock() - mark a session/namespace as readonly
*
* @return void
*/
public function lock()
{
self::$_namespaceLocks[$this->_namespace] = \true;
}
/**
* unlock() - unmark a session/namespace to enable read & write
*
* @return void
*/
public function unlock()
{
unset(self::$_namespaceLocks[$this->_namespace]);
}
/**
* unlockAll() - unmark all session/namespaces to enable read & write
*
* @return void
*/
public static function unlockAll()
{
self::$_namespaceLocks = array();
}
/**
* isLocked() - return lock status, true if, and only if, read-only
*
* @return bool
*/
public function isLocked()
{
return isset(self::$_namespaceLocks[$this->_namespace]);
}
/**
* unsetAll() - unset all variables in this namespace
*
* @return true
*/
public function unsetAll()
{
return parent::_namespaceUnset($this->_namespace);
}
/**
* __get() - method to get a variable in this object's current namespace
*
* @param string $name - programmatic name of a key, in a <key,value> pair in the current namespace
* @return mixed
*/
public function &__get($name)
{
if ($name === '') {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception("The '{$name}' key must be a non-empty string");
}
return parent::_namespaceGet($this->_namespace, $name);
}
/**
* __set() - method to set a variable/value in this object's namespace
*
* @param string $name - programmatic name of a key, in a <key,value> pair in the current namespace
* @param mixed $value - value in the <key,value> pair to assign to the $name key
* @throws Zend_Session_Exception
* @return true
*/
public function __set($name, $value)
{
if (isset(self::$_namespaceLocks[$this->_namespace])) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception('This session/namespace has been marked as read-only.');
}
if ($name === '') {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception("The '{$name}' key must be a non-empty string");
}
if (parent::$_writable === \false) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception(parent::_THROW_NOT_WRITABLE_MSG);
}
$name = (string) $name;
$_SESSION[$this->_namespace][$name] = $value;
}
/**
* apply() - enables applying user-selected function, such as array_merge() to the namespace
* Parameters following the $callback argument are passed to the callback function.
* Caveat: ignores members expiring now.
*
* Example:
* $namespace->apply('array_merge', array('tree' => 'apple', 'fruit' => 'peach'), array('flower' => 'rose'));
* $namespace->apply('count');
*
* @param string|array $callback - callback function
*/
public function apply($callback)
{
$arg_list = \func_get_args();
$arg_list[0] = $_SESSION[$this->_namespace];
return \call_user_func_array($callback, $arg_list);
}
/**
* applySet() - enables applying user-selected function, and sets entire namespace to the result
* Result of $callback must be an array.
* Parameters following the $callback argument are passed to the callback function.
* Caveat: ignores members expiring now.
*
* Example:
* $namespace->applySet('array_merge', array('tree' => 'apple', 'fruit' => 'peach'), array('flower' => 'rose'));
*
* @param string|array $callback - callback function
*/
public function applySet($callback)
{
$arg_list = \func_get_args();
$arg_list[0] = $_SESSION[$this->_namespace];
$result = \call_user_func_array($callback, $arg_list);
if (!\is_array($result)) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception('Result must be an array. Got: ' . \gettype($result));
}
$_SESSION[$this->_namespace] = $result;
return $result;
}
/**
* __isset() - determine if a variable in this object's namespace is set
*
* @param string $name - programmatic name of a key, in a <key,value> pair in the current namespace
* @return bool
*/
public function __isset($name)
{
if ($name === '') {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception("The '{$name}' key must be a non-empty string");
}
return parent::_namespaceIsset($this->_namespace, $name);
}
/**
* __unset() - unset a variable in this object's namespace.
*
* @param string $name - programmatic name of a key, in a <key,value> pair in the current namespace
* @return true
*/
public function __unset($name)
{
if ($name === '') {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception("The '{$name}' key must be a non-empty string");
}
return parent::_namespaceUnset($this->_namespace, $name);
}
/**
* setExpirationSeconds() - expire the namespace, or specific variables after a specified
* number of seconds
*
* @param int $seconds - expires in this many seconds
* @param mixed $variables - OPTIONAL list of variables to expire (defaults to all)
* @throws Zend_Session_Exception
* @return void
*/
public function setExpirationSeconds($seconds, $variables = null)
{
if (parent::$_writable === \false) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception(parent::_THROW_NOT_WRITABLE_MSG);
}
if ($seconds <= 0) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception('Seconds must be positive.');
}
if ($variables === null) {
// apply expiration to entire namespace
$_SESSION['__ZF'][$this->_namespace]['ENT'] = \time() + $seconds;
} else {
if (\is_string($variables)) {
$variables = array($variables);
}
foreach ($variables as $variable) {
if (!empty($variable)) {
$_SESSION['__ZF'][$this->_namespace]['ENVT'][$variable] = \time() + $seconds;
}
}
}
}
/**
* setExpirationHops() - expire the namespace, or specific variables after a specified
* number of page hops
*
* @param int $hops - how many "hops" (number of subsequent requests) before expiring
* @param mixed $variables - OPTIONAL list of variables to expire (defaults to all)
* @param boolean $hopCountOnUsageOnly - OPTIONAL if set, only count a hop/request if this namespace is used
* @throws Zend_Session_Exception
* @return void
*/
public function setExpirationHops($hops, $variables = null, $hopCountOnUsageOnly = \false)
{
if (parent::$_writable === \false) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception(parent::_THROW_NOT_WRITABLE_MSG);
}
if ($hops <= 0) {
/**
* @see Zend_Session_Exception
*/
// require_once 'Zend/Session/Exception.php';
throw new \Zend_Session_Exception('Hops must be positive number.');
}
if ($variables === null) {
// apply expiration to entire namespace
if ($hopCountOnUsageOnly === \false) {
$_SESSION['__ZF'][$this->_namespace]['ENGH'] = $hops;
} else {
$_SESSION['__ZF'][$this->_namespace]['ENNH'] = $hops;
}
} else {
if (\is_string($variables)) {
$variables = array($variables);
}
foreach ($variables as $variable) {
if (!empty($variable)) {
if ($hopCountOnUsageOnly === \false) {
$_SESSION['__ZF'][$this->_namespace]['ENVGH'][$variable] = $hops;
} else {
$_SESSION['__ZF'][$this->_namespace]['ENVNH'][$variable] = $hops;
}
}
}
}
}
/**
* Returns the namespace name
*
* @return string
*/
public function getNamespace()
{
return $this->_namespace;
}
}
}