added elfinder module

sites/all/libraries/elfinder/php/elFinderSession.php

@@ -0,0 +1,237 @@
+<?php
+
+/**
+ * elFinder - file manager for web.
+ * Session Wrapper Class.
+ *
+ * @package elfinder
+ * @author Naoki Sawada
+ **/
+
+class elFinderSession implements elFinderSessionInterface
+{
+	protected $started = false;
+	
+	protected $keys = array();
+	
+	protected $base64encode = false;
+	
+	protected $opts = array(
+		'base64encode' => false,
+		'keys' => array(
+			'default'   => 'elFinderCaches',
+			'netvolume' => 'elFinderNetVolumes'
+		)
+	);
+	
+	public function __construct($opts)
+	{
+		$this->opts = array_merge($this->opts, $opts);
+		$this->base64encode = !empty($this->opts['base64encode']);
+		$this->keys = $this->opts['keys'];
+		
+		return $this;
+	}
+	
+    /**
+     * {@inheritdoc}
+     */
+	public function start()
+	{
+		if (version_compare(PHP_VERSION, '5.4.0', '>=')) {
+			if (session_status() !== PHP_SESSION_ACTIVE) {
+				session_start();
+			}
+		} else {
+			set_error_handler(array($this, 'session_start_error'),  E_NOTICE);
+			session_start();
+			restore_error_handler();
+		}
+		$this->started = session_id()? true : false;
+		
+		return $this;
+	}
+	
+    /**
+     * {@inheritdoc}
+     */
+	public function close()
+	{
+		if ($this->started) {
+			session_write_close();
+		}
+		$this->started = false;
+		
+		return $this;
+	}
+	
+    /**
+     * {@inheritdoc}
+     */
+	public function get($key, $empty = null)
+	{
+		$closed = false;
+		if (! $this->started) {
+			$closed = true;
+			$this->start();
+		}
+		
+		$data = null;
+		
+		if ($this->started) {
+			$session =& $this->getSessionRef($key);
+			$data = $session;
+			if ($data && $this->base64encode) {
+				$data = $this->decodeData($data);
+			}
+		}
+		
+		$checkFn = null;
+		if (! is_null($empty)) {
+			if (is_string($empty)) {
+				$checkFn = 'is_string';
+			} elseif (is_array($empty)) {
+				$checkFn = 'is_array';
+			} elseif (is_object($empty)) {
+				$checkFn = 'is_object';
+			} elseif (is_float($empty)) {
+				$checkFn = 'is_float';
+			} elseif (is_int($empty)) {
+				$checkFn = 'is_int';
+			}
+		}
+		
+		if (is_null($data) || ($checkFn && ! $checkFn($data))) {
+			$session = $data = $empty;
+		}
+		
+		if ($closed) {
+			$this->close();
+		}
+
+		return $data;
+	}
+	
+    /**
+     * {@inheritdoc}
+     */
+	public function set($key, $data)
+	{
+		$closed = false;
+		if (! $this->started) {
+			$closed = true;
+			$this->start();
+		}
+		$session =& $this->getSessionRef($key);
+		if ($this->base64encode) {
+			$data = $this->encodeData($data);
+		}
+		$session = $data;
+		
+		if ($closed) {
+			$this->close();
+		}
+		
+		return $this;
+	}
+	
+    /**
+     * {@inheritdoc}
+     */
+	public function remove($key)
+	{
+		$closed = false;
+		if (! $this->started) {
+			$closed = true;
+			$this->start();
+		}
+
+		list($cat, $name) = array_pad(explode('.', $key, 2), 2, null);
+		if (is_null($name)) {
+			if (! isset($this->keys[$cat])) {
+				$name = $cat;
+				$cat = 'default';
+			}
+		}
+		if (isset($this->keys[$cat])) {
+			$cat = $this->keys[$cat];
+		} else {
+			$name = $cat . '.' . $name;
+			$cat = $this->keys['default'];
+		}
+		if (is_null($name)) {
+			unset($_SESSION[$cat]);
+		} else {
+			if (isset($_SESSION[$cat]) && is_array($_SESSION[$cat])) {
+				unset($_SESSION[$cat][$name]);
+			}
+		}
+
+		if ($closed) {
+			$this->close();
+		}
+		
+		return $this;
+	}
+	
+	protected function & getSessionRef($key)
+	{
+		$session = null;
+		if ($this->started) {
+			list($cat, $name) = array_pad(explode('.', $key, 2), 2, null);
+			if (is_null($name)) {
+				if (! isset($this->keys[$cat])) {
+					$name = $cat;
+					$cat = 'default';
+				}
+			}
+			if (isset($this->keys[$cat])) {
+				$cat = $this->keys[$cat];
+			} else {
+				$name = $cat . '.' . $name;
+				$cat = $this->keys['default'];
+			}
+			if (is_null($name)) {
+				if (! isset($_SESSION[$cat])) {
+					$_SESSION[$cat] = null;
+				}
+				$session =& $_SESSION[$cat];
+			} else {
+				if (! isset($_SESSION[$cat]) || ! is_array($_SESSION[$cat])) {
+					$_SESSION[$cat] = array();
+				}
+				if (! isset($_SESSION[$cat][$name])) {
+					$_SESSION[$cat][$name] = null;
+				}
+				$session =& $_SESSION[$cat][$name];
+			}
+		}
+		return $session;
+	}
+	
+	protected function encodeData($data)
+	{
+		if ($this->base64encode) {
+			$data = base64_encode(serialize($data));
+		}
+		return $data;
+	}
+	
+	protected function decodeData($data)
+	{
+		if ($this->base64encode) {
+			if (is_string($data)) {
+				if (($data = base64_decode($data)) !== false) {
+					$data = unserialize($data);
+				} else {
+					$data = null;
+				}
+			} else {
+				$data = null;
+			}
+		}
+		return $data;
+	}
+
+	protected function session_start_error($errno , $errstr) {}
+}