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.jsp;
20
21 import java.io.IOException;
22 import java.nio.file.Files;
23 import java.nio.file.Path;
24 import java.nio.file.Paths;
25
26 import javax.servlet.RequestDispatcher;
27 import javax.servlet.ServletException;
28 import javax.servlet.http.HttpServletRequest;
29 import javax.servlet.http.HttpServletResponse;
30
31 import org.apache.jasper.servlet.JspServlet;
32
33
34 /**
35 * JettyJspServlet
36 *
37 * Wrapper for the jsp servlet that handles receiving requests mapped from
38 * jsp-property-groups. Mappings could be wildcard urls like "/*", which would
39 * include welcome files, but we need those to be handled by the DefaultServlet.
40 */
41 public class JettyJspServlet extends JspServlet
42 {
43
44 /**
45 *
46 */
47 private static final long serialVersionUID = -5387857473125086791L;
48
49
50
51
52
53 @Override
54 public void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
55 {
56 HttpServletRequest request = null;
57 if (req instanceof HttpServletRequest)
58 request = (HttpServletRequest)req;
59 else
60 throw new ServletException("Request not HttpServletRequest");
61
62 String servletPath=null;
63 String pathInfo=null;
64 if (request.getAttribute(RequestDispatcher.INCLUDE_REQUEST_URI)!=null)
65 {
66 servletPath=(String)request.getAttribute(RequestDispatcher.INCLUDE_SERVLET_PATH);
67 pathInfo=(String)request.getAttribute(RequestDispatcher.INCLUDE_PATH_INFO);
68 if (servletPath==null)
69 {
70 servletPath=request.getServletPath();
71 pathInfo=request.getPathInfo();
72 }
73 }
74 else
75 {
76 servletPath = request.getServletPath();
77 pathInfo = request.getPathInfo();
78 }
79
80 String pathInContext = addPaths(servletPath,pathInfo);
81
82 String jspFile = getInitParameter("jspFile");
83
84 //if this is a forced-path from a jsp-file, we want the jsp servlet to handle it,
85 //otherwise the default servlet might handle it
86 if (jspFile == null)
87 {
88 if (pathInContext != null && pathInContext.endsWith("/"))
89 {
90 //dispatch via forward to the default servlet
91 getServletContext().getNamedDispatcher("default").forward(req, resp);
92 return;
93 }
94 else
95 {
96 //check if it resolves to a directory
97 String realPath = getServletContext().getRealPath(pathInContext);
98 if (realPath != null)
99 {
100 Path asPath = Paths.get(realPath);
101 if (Files.exists(asPath) && Files.isDirectory(asPath))
102 {
103 //dispatch via forward to the default servlet
104 getServletContext().getNamedDispatcher("default").forward(req, resp);
105 return;
106 }
107 }
108 }
109 }
110
111 //fall through to the normal jsp servlet handling
112 super.service(req, resp);
113 }
114
115 /**
116 * @param servletPath the servletPath of the request
117 * @param pathInfo the pathInfo of the request
118 * @return servletPath with pathInfo appended
119 */
120 private String addPaths(String servletPath, String pathInfo)
121 {
122 if (servletPath.length()==0)
123 return pathInfo;
124
125 if (pathInfo==null)
126 return servletPath;
127
128 return servletPath+pathInfo;
129 }
130 }