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//
// ========================================================================
// Copyright (c) 1995-2013 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.rewrite.handler;
import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.http.HttpHeader;
import org.eclipse.jetty.http.HttpHeaderValue;
import org.eclipse.jetty.util.ArrayTernaryTrie;
import org.eclipse.jetty.util.StringMap;
import org.eclipse.jetty.util.Trie;
/**
* MSIE (Microsoft Internet Explorer) SSL Rule.
* Disable keep alive for SSL from IE5 or IE6 on Windows 2000.
*
*
*
*/
public class MsieSslRule extends Rule
{
private static final int IEv5 = '5';
private static final int IEv6 = '6';
private static Trie<Boolean> __IE6_BadOS = new ArrayTernaryTrie<>();
{
__IE6_BadOS.put("NT 5.01", Boolean.TRUE);
__IE6_BadOS.put("NT 5.0",Boolean.TRUE);
__IE6_BadOS.put("NT 4.0",Boolean.TRUE);
__IE6_BadOS.put("98",Boolean.TRUE);
__IE6_BadOS.put("98; Win 9x 4.90",Boolean.TRUE);
__IE6_BadOS.put("95",Boolean.TRUE);
__IE6_BadOS.put("CE",Boolean.TRUE);
}
public MsieSslRule()
{
_handling = false;
_terminating = false;
}
@Override
public String matchAndApply(String target, HttpServletRequest request, HttpServletResponse response) throws IOException
{
if (request.isSecure())
{
String user_agent = request.getHeader(HttpHeader.USER_AGENT.asString());
if (user_agent!=null)
{
int msie=user_agent.indexOf("MSIE");
if (msie>0 && user_agent.length()-msie>5)
{
// Get Internet Explorer Version
int ieVersion = user_agent.charAt(msie+5);
if ( ieVersion<=IEv5)
{
response.setHeader(HttpHeader.CONNECTION.asString(), HttpHeaderValue.CLOSE.asString());
return target;
}
if (ieVersion==IEv6)
{
int windows = user_agent.indexOf("Windows",msie+5);
if (windows>0)
{
int end=user_agent.indexOf(')',windows+8);
if(end<0 || __IE6_BadOS.get(user_agent,windows+8,end-windows-8)!=null)
{
response.setHeader(HttpHeader.CONNECTION.asString(), HttpHeaderValue.CLOSE.asString());
return target;
}
}
}
}
}
}
return null;
}
}
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