1 files changed, 158 insertions, 0 deletions
diff --git a/jetty-server/src/main/java/org/eclipse/jetty/server/handler/MovedContextHandler.java b/jetty-server/src/main/java/org/eclipse/jetty/server/handler/MovedContextHandler.java
new file mode 100644
index 0000000000..8854a5c6e5
--- /dev/null
+++ b/jetty-server/src/main/java/org/eclipse/jetty/server/handler/MovedContextHandler.java
@@ -0,0 +1,158 @@
+// ========================================================================
+// Copyright (c) 2006-2009 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.server.handler;
+
+import java.io.IOException;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.eclipse.jetty.http.HttpHeaders;
+import org.eclipse.jetty.server.HandlerContainer;
+import org.eclipse.jetty.server.HttpConnection;
+import org.eclipse.jetty.server.Request;
+import org.eclipse.jetty.util.URIUtil;
+
+/* ------------------------------------------------------------ */
+/** Moved ContextHandler.
+ * This context can be used to replace a context that has changed
+ * location.  Requests are redirected (either to a fixed URL or to a
+ * new context base). 
+ */
+public class MovedContextHandler extends ContextHandler
+{
+    String _newContextURL;
+    boolean _discardPathInfo;
+    boolean _discardQuery;
+    boolean _permanent;
+    Redirector _redirector;
+    String _expires;
+
+    public MovedContextHandler()
+    {
+        _redirector=new Redirector();
+        addHandler(_redirector);
+        setAllowNullPathInfo(true);
+    }
+    
+    public MovedContextHandler(HandlerContainer parent, String contextPath, String newContextURL)
+    {
+        super(parent,contextPath);
+        _newContextURL=newContextURL;
+        _redirector=new Redirector();
+        addHandler(_redirector);
+    }
+
+    public boolean isDiscardPathInfo()
+    {
+        return _discardPathInfo;
+    }
+
+    public void setDiscardPathInfo(boolean discardPathInfo)
+    {
+        _discardPathInfo = discardPathInfo;
+    }
+
+    public String getNewContextURL()
+    {
+        return _newContextURL;
+    }
+
+    public void setNewContextURL(String newContextURL)
+    {
+        _newContextURL = newContextURL;
+    }
+
+    public boolean isPermanent()
+    {
+        return _permanent;
+    }
+
+    public void setPermanent(boolean permanent)
+    {
+        _permanent = permanent;
+    }
+
+    public boolean isDiscardQuery()
+    {
+        return _discardQuery;
+    }
+
+    public void setDiscardQuery(boolean discardQuery)
+    {
+        _discardQuery = discardQuery;
+    }
+    
+    private class Redirector extends AbstractHandler
+    {
+        public void handle(String target, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
+        {
+            if (_newContextURL==null)
+                return;
+            
+            Request base_request=(request instanceof Request)?(Request)request:HttpConnection.getCurrentConnection().getRequest();
+            
+            String url = _newContextURL;
+            if (!_discardPathInfo && request.getPathInfo()!=null)
+                url=URIUtil.addPaths(url, request.getPathInfo());
+            if (!_discardQuery && request.getQueryString()!=null)
+                url+="?"+request.getQueryString();
+            
+            response.sendRedirect(url);
+
+            String path=_newContextURL;
+            if (!_discardPathInfo && request.getPathInfo()!=null)
+                path=URIUtil.addPaths(path, request.getPathInfo());
+            
+            StringBuilder location = URIUtil.hasScheme(path)?new StringBuilder():base_request.getRootURL();
+
+            location.append(path);
+            if (!_discardQuery && request.getQueryString()!=null)
+            {
+                location.append('?');
+                location.append(request.getQueryString());
+            }
+            
+            response.setHeader(HttpHeaders.LOCATION,location.toString());
+
+            if (_expires!=null)
+                response.setHeader(HttpHeaders.EXPIRES,_expires);
+            
+            response.setStatus(_permanent?HttpServletResponse.SC_MOVED_PERMANENTLY:HttpServletResponse.SC_FOUND);
+            response.setContentLength(0);
+            base_request.setHandled(true);
+        }
+        
+    }
+
+    /* ------------------------------------------------------------ */
+    /**
+     * @return the expires header value or null if no expires header
+     */
+    public String getExpires()
+    {
+        return _expires;
+    }
+
+    /* ------------------------------------------------------------ */
+    /**
+     * @param expires the expires header value or null if no expires header
+     */
+    public void setExpires(String expires)
+    {
+        _expires = expires;
+    }
+
+}