Importing upstream Jetty jetty-9.2.1.v20140609

[gigi.git] / lib / jetty / org / eclipse / jetty / security / HashCrossContextPsuedoSession.java

diff --git a/lib/jetty/org/eclipse/jetty/security/HashCrossContextPsuedoSession.java b/lib/jetty/org/eclipse/jetty/security/HashCrossContextPsuedoSession.java
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+++ b/lib/jetty/org/eclipse/jetty/security/HashCrossContextPsuedoSession.java
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+//
+//  ========================================================================
+//  Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
+//  ------------------------------------------------------------------------
+//  All rights reserved. This program and the accompanying materials
+//  are made available under the terms of the Eclipse Public License v1.0
+//  and Apache License v2.0 which accompanies this distribution.
+//
+//      The Eclipse Public License is available at
+//      http://www.eclipse.org/legal/epl-v10.html
+//
+//      The Apache License v2.0 is available at
+//      http://www.opensource.org/licenses/apache2.0.php
+//
+//  You may elect to redistribute this code under either of these licenses.
+//  ========================================================================
+//
+
+package org.eclipse.jetty.security;
+
+import java.security.SecureRandom;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Random;
+
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ * @version $Rev: 4660 $ $Date: 2009-02-25 17:29:53 +0100 (Wed, 25 Feb 2009) $
+ */
+public class HashCrossContextPsuedoSession<T> implements CrossContextPsuedoSession<T>
+{
+    private final String _cookieName;
+
+    private final String _cookiePath;
+
+    private final Random _random = new SecureRandom();
+
+    private final Map<String, T> _data = new HashMap<String, T>();
+
+    public HashCrossContextPsuedoSession(String cookieName, String cookiePath)
+    {
+        this._cookieName = cookieName;
+        this._cookiePath = cookiePath == null ? "/" : cookiePath;
+    }
+
+    public T fetch(HttpServletRequest request)
+    {
+        Cookie[] cookies = request.getCookies();
+        if (cookies == null)
+            return null;
+        
+        for (Cookie cookie : cookies)
+        {
+            if (_cookieName.equals(cookie.getName()))
+            {
+                String key = cookie.getValue();
+                return _data.get(key);
+            }
+        }
+        return null;
+    }
+
+    public void store(T datum, HttpServletResponse response)
+    {
+        String key;
+
+        synchronized (_data)
+        {
+            // Create new ID
+            while (true)
+            {
+                key = Long.toString(Math.abs(_random.nextLong()), 30 + (int) (System.currentTimeMillis() % 7));
+                if (!_data.containsKey(key)) break;
+            }
+
+            _data.put(key, datum);
+        }
+
+        Cookie cookie = new Cookie(_cookieName, key);
+        cookie.setPath(_cookiePath);
+        response.addCookie(cookie);
+    }
+
+    public void clear(HttpServletRequest request)
+    {
+        for (Cookie cookie : request.getCookies())
+        {
+            if (_cookieName.equals(cookie.getName()))
+            {
+                String key = cookie.getValue();
+                _data.remove(key);
+                break;
+            }
+        }
+    }
+}