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1   //
2   //  ========================================================================
3   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
4   //  ------------------------------------------------------------------------
5   //  All rights reserved. This program and the accompanying materials
6   //  are made available under the terms of the Eclipse Public License v1.0
7   //  and Apache License v2.0 which accompanies this distribution.
8   //
9   //      The Eclipse Public License is available at
10  //      http://www.eclipse.org/legal/epl-v10.html
11  //
12  //      The Apache License v2.0 is available at
13  //      http://www.opensource.org/licenses/apache2.0.php
14  //
15  //  You may elect to redistribute this code under either of these licenses.
16  //  ========================================================================
17  //
18  
19  package org.eclipse.jetty.servlet;
20  
21  import java.io.IOException;
22  
23  import javax.servlet.GenericServlet;
24  import javax.servlet.ServletException;
25  import javax.servlet.ServletRequest;
26  import javax.servlet.ServletResponse;
27  import javax.servlet.http.HttpServletRequest;
28  
29  import org.eclipse.jetty.server.Dispatcher;
30  import org.eclipse.jetty.server.handler.ContextHandler;
31  import org.eclipse.jetty.util.URIUtil;
32  import org.eclipse.jetty.util.resource.Resource;
33  
34  
35  /* ------------------------------------------------------------ */
36  /** Servlet handling JSP Property Group mappings
37   * <p>
38   * This servlet is mapped to by any URL pattern for a JSP property group. 
39   * Resources handled by this servlet that are not directories will be passed
40   * directly to the JSP servlet.    Resources that are directories will be 
41   * passed directly to the default servlet.
42   */
43  public class JspPropertyGroupServlet extends GenericServlet
44  {
45      private static final long serialVersionUID = 3681783214726776945L;
46      
47      public final static String NAME = "__org.eclipse.jetty.servlet.JspPropertyGroupServlet__";
48      private final ServletHandler _servletHandler;
49      private final ContextHandler _contextHandler;
50      private ServletHolder _dftServlet;
51      private ServletHolder _jspServlet;
52      private boolean _starJspMapped;
53      
54      public JspPropertyGroupServlet(ContextHandler context, ServletHandler servletHandler)
55      {
56          _contextHandler=context;
57          _servletHandler=servletHandler;        
58      }
59      
60      @Override
61      public void init() throws ServletException
62      {            
63          String jsp_name = "jsp";
64          ServletMapping servlet_mapping =_servletHandler.getServletMapping("*.jsp");
65          if (servlet_mapping!=null)
66          {
67              _starJspMapped=true;
68             
69              //now find the jsp servlet, ignoring the mapping that is for ourself
70              ServletMapping[] mappings = _servletHandler.getServletMappings();
71              for (ServletMapping m:mappings)
72              {
73                  String[] paths = m.getPathSpecs();
74                  if (paths!=null)
75                  {
76                      for (String path:paths)
77                      {
78                          if ("*.jsp".equals(path) && !NAME.equals(m.getServletName()))
79                              servlet_mapping = m;
80                      }
81                  }
82              }
83              
84              jsp_name=servlet_mapping.getServletName();
85          }
86          _jspServlet=_servletHandler.getServlet(jsp_name);
87          
88          String dft_name="default";
89          ServletMapping default_mapping=_servletHandler.getServletMapping("/");
90          if (default_mapping!=null)
91              dft_name=default_mapping.getServletName();
92          _dftServlet=_servletHandler.getServlet(dft_name);
93      }
94  
95      @Override
96      public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException
97      {           
98          HttpServletRequest request = null;
99          if (req instanceof HttpServletRequest)
100             request = (HttpServletRequest)req;
101         else
102             throw new ServletException("Request not HttpServletRequest");
103 
104         String servletPath=null;
105         String pathInfo=null;
106         if (request.getAttribute(Dispatcher.INCLUDE_REQUEST_URI)!=null)
107         {
108             servletPath=(String)request.getAttribute(Dispatcher.INCLUDE_SERVLET_PATH);
109             pathInfo=(String)request.getAttribute(Dispatcher.INCLUDE_PATH_INFO);
110             if (servletPath==null)
111             {
112                 servletPath=request.getServletPath();
113                 pathInfo=request.getPathInfo();
114             }
115         }
116         else
117         {
118             servletPath = request.getServletPath();
119             pathInfo = request.getPathInfo();
120         }
121         
122         String pathInContext=URIUtil.addPaths(servletPath,pathInfo);
123         
124         if (pathInContext.endsWith("/"))
125         {
126             _dftServlet.getServlet().service(req,res);
127         }
128         else if (_starJspMapped && pathInContext.toLowerCase().endsWith(".jsp"))
129         {
130             _jspServlet.getServlet().service(req,res);
131         }
132         else
133         {
134          
135             Resource resource = _contextHandler.getResource(pathInContext);
136             if (resource!=null && resource.isDirectory())
137                 _dftServlet.getServlet().service(req,res);
138             else
139                 _jspServlet.getServlet().service(req,res);
140         }
141         
142     }
143 
144 }