--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpFoundation\Session\Storage\Proxy;
+
+/**
+ * AbstractProxy.
+ *
+ * @author Drak <drak@zikula.org>
+ */
+abstract class AbstractProxy
+{
+ /**
+ * Flag if handler wraps an internal PHP session handler (using \SessionHandler).
+ *
+ * @var bool
+ */
+ protected $wrapper = false;
+
+ /**
+ * @var bool
+ */
+ protected $active = false;
+
+ /**
+ * @var string
+ */
+ protected $saveHandlerName;
+
+ /**
+ * Gets the session.save_handler name.
+ *
+ * @return string
+ */
+ public function getSaveHandlerName()
+ {
+ return $this->saveHandlerName;
+ }
+
+ /**
+ * Is this proxy handler and instance of \SessionHandlerInterface.
+ *
+ * @return bool
+ */
+ public function isSessionHandlerInterface()
+ {
+ return $this instanceof \SessionHandlerInterface;
+ }
+
+ /**
+ * Returns true if this handler wraps an internal PHP session save handler using \SessionHandler.
+ *
+ * @return bool
+ */
+ public function isWrapper()
+ {
+ return $this->wrapper;
+ }
+
+ /**
+ * Has a session started?
+ *
+ * @return bool
+ */
+ public function isActive()
+ {
+ if (PHP_VERSION_ID >= 50400) {
+ return $this->active = \PHP_SESSION_ACTIVE === session_status();
+ }
+
+ return $this->active;
+ }
+
+ /**
+ * Sets the active flag.
+ *
+ * Has no effect under PHP 5.4+ as status is detected
+ * automatically in isActive()
+ *
+ * @internal
+ *
+ * @param bool $flag
+ *
+ * @throws \LogicException
+ */
+ public function setActive($flag)
+ {
+ if (PHP_VERSION_ID >= 50400) {
+ throw new \LogicException('This method is disabled in PHP 5.4.0+');
+ }
+
+ $this->active = (bool) $flag;
+ }
+
+ /**
+ * Gets the session ID.
+ *
+ * @return string
+ */
+ public function getId()
+ {
+ return session_id();
+ }
+
+ /**
+ * Sets the session ID.
+ *
+ * @param string $id
+ *
+ * @throws \LogicException
+ */
+ public function setId($id)
+ {
+ if ($this->isActive()) {
+ throw new \LogicException('Cannot change the ID of an active session');
+ }
+
+ session_id($id);
+ }
+
+ /**
+ * Gets the session name.
+ *
+ * @return string
+ */
+ public function getName()
+ {
+ return session_name();
+ }
+
+ /**
+ * Sets the session name.
+ *
+ * @param string $name
+ *
+ * @throws \LogicException
+ */
+ public function setName($name)
+ {
+ if ($this->isActive()) {
+ throw new \LogicException('Cannot change the name of an active session');
+ }
+
+ session_name($name);
+ }
+}