001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.apache.bridges.struts;
016    
017    import com.liferay.portal.kernel.servlet.PipingServletResponse;
018    import com.liferay.portal.kernel.util.CharPool;
019    import com.liferay.portal.kernel.util.JavaConstants;
020    import com.liferay.portal.kernel.util.StringPool;
021    import com.liferay.portal.model.Portlet;
022    import com.liferay.portal.model.PortletApp;
023    import com.liferay.portlet.PortletRequestImpl;
024    import com.liferay.portlet.PortletResponseImpl;
025    import com.liferay.portlet.PortletServletRequest;
026    import com.liferay.portlet.PortletServletResponse;
027    
028    import java.io.IOException;
029    import java.io.PrintWriter;
030    
031    import java.util.Set;
032    
033    import javax.portlet.PortletRequest;
034    import javax.portlet.PortletResponse;
035    
036    import javax.servlet.RequestDispatcher;
037    import javax.servlet.ServletException;
038    import javax.servlet.ServletRequest;
039    import javax.servlet.ServletResponse;
040    import javax.servlet.http.HttpServletRequest;
041    import javax.servlet.http.HttpServletResponse;
042    
043    /**
044     * @author Michael Young
045     * @author Brian Myunghun Kim
046     * @author Brian Wing Shun Chan
047     * @author Deepak Gothe
048     */
049    public class LiferayRequestDispatcher implements RequestDispatcher {
050    
051            public LiferayRequestDispatcher(
052                    RequestDispatcher requestDispatcher, String path) {
053    
054                    _requestDispatcher = requestDispatcher;
055                    _path = path;
056            }
057    
058            @Override
059            public void forward(
060                            ServletRequest servletRequest, ServletResponse servletResponse)
061                    throws IOException, ServletException {
062    
063                    PortletRequest portletRequest =
064                            (PortletRequest)servletRequest.getAttribute(
065                                    JavaConstants.JAVAX_PORTLET_REQUEST);
066    
067                    if (portletRequest != null) {
068                            invoke(servletRequest, servletResponse, false);
069                    }
070                    else {
071                            _requestDispatcher.forward(servletRequest, servletResponse);
072                    }
073            }
074    
075            /**
076             * @deprecated {@link #forward(ServletRequest, ServletResponse)}
077             */
078            public void forward(
079                            ServletRequest servletRequest, ServletResponse servletResponse,
080                            boolean named)
081                    throws IOException, ServletException {
082    
083                    forward(servletRequest, servletResponse);
084            }
085    
086            @Override
087            public void include(
088                            ServletRequest servletRequest, ServletResponse servletResponse)
089                    throws IOException, ServletException {
090    
091                    PortletRequest portletRequest =
092                            (PortletRequest)servletRequest.getAttribute(
093                                    JavaConstants.JAVAX_PORTLET_REQUEST);
094    
095                    if (portletRequest != null) {
096                            invoke(servletRequest, servletResponse, true);
097                    }
098                    else {
099                            _requestDispatcher.include(servletRequest, servletResponse);
100                    }
101            }
102    
103            /**
104             * @deprecated {@link #include(ServletRequest, ServletResponse)}
105             */
106            public void include(
107                            ServletRequest servletRequest, ServletResponse servletResponse,
108                            boolean named)
109                    throws IOException, ServletException {
110    
111                    include(servletRequest, servletResponse);
112            }
113    
114            public void invoke(
115                            ServletRequest servletRequest, ServletResponse servletResponse,
116                            boolean include)
117                    throws IOException, ServletException {
118    
119                    String pathInfo = null;
120                    String queryString = null;
121                    String requestURI = null;
122                    String servletPath = null;
123    
124                    PortletRequest portletRequest =
125                            (PortletRequest)servletRequest.getAttribute(
126                                    JavaConstants.JAVAX_PORTLET_REQUEST);
127    
128                    PortletResponse portletResponse =
129                            (PortletResponse)servletRequest.getAttribute(
130                                    JavaConstants.JAVAX_PORTLET_RESPONSE);
131    
132                    if (_path != null) {
133                            String pathNoQueryString = _path;
134    
135                            int pos = _path.indexOf(CharPool.QUESTION);
136    
137                            if (pos != -1) {
138                                    pathNoQueryString = _path.substring(0, pos);
139                                    queryString = _path.substring(pos + 1);
140                            }
141    
142                            Set<String> servletURLPatterns = getServletURLPatterns(
143                                    servletRequest, portletRequest, portletResponse);
144    
145                            for (String urlPattern : servletURLPatterns) {
146                                    if (urlPattern.endsWith("/*")) {
147                                            pos = urlPattern.indexOf("/*");
148    
149                                            urlPattern = urlPattern.substring(0, pos + 1);
150    
151                                            if (pathNoQueryString.startsWith(urlPattern)) {
152                                                    pathInfo = pathNoQueryString.substring(
153                                                            urlPattern.length());
154                                                    servletPath = urlPattern;
155    
156                                                    break;
157                                            }
158                                    }
159                            }
160    
161                            if ((pathInfo == null) && (servletPath == null)) {
162                                    pathInfo = StringPool.BLANK;
163                                    servletPath = pathNoQueryString;
164                            }
165    
166                            requestURI = portletRequest.getContextPath() + pathNoQueryString;
167                    }
168    
169                    HttpServletRequest portletServletRequest = getPortletServletRequest(
170                            servletRequest, portletRequest, pathInfo, queryString, requestURI,
171                            servletPath, include);
172    
173                    HttpServletResponse portletServletResponse = getPortletServletResponse(
174                            servletResponse, portletRequest, portletResponse, include);
175    
176                    if (include) {
177                            _requestDispatcher.include(
178                                    portletServletRequest, portletServletResponse);
179                    }
180                    else {
181                            _requestDispatcher.forward(
182                                    portletServletRequest, portletServletResponse);
183                    }
184            }
185    
186            /**
187             * @deprecated {@link #invoke(ServletRequest, ServletResponse, boolean)}
188             */
189            public void invoke(
190                            ServletRequest servletRequest, ServletResponse servletResponse,
191                            boolean named, boolean include)
192                    throws IOException, ServletException {
193    
194                    invoke(servletRequest, servletResponse, include);
195            }
196    
197            protected HttpServletRequest getPortletServletRequest(
198                    ServletRequest servletRequest, PortletRequest portletRequest,
199                    String pathInfo, String queryString, String requestURI,
200                    String servletPath, boolean include) {
201    
202                    HttpServletRequest request = (HttpServletRequest)servletRequest;
203                    boolean named = false;
204    
205                    PortletRequestImpl portletRequestImpl =
206                            PortletRequestImpl.getPortletRequestImpl(portletRequest);
207    
208                    return new PortletServletRequest(
209                            request, portletRequestImpl, pathInfo, queryString, requestURI,
210                            servletPath, named, include);
211            }
212    
213            protected HttpServletResponse getPortletServletResponse(
214                            ServletResponse servletResponse, PortletRequest portletRequest,
215                            PortletResponse portletResponse, boolean include)
216                    throws IOException {
217    
218                    HttpServletResponse response = (HttpServletResponse)servletResponse;
219    
220                    PortletResponseImpl portletResponseImpl =
221                            (PortletResponseImpl)portletResponse;
222    
223                    HttpServletResponse httpServletResponse = new PortletServletResponse(
224                            response, portletResponseImpl, include);
225    
226                    PrintWriter printWriter = servletResponse.getWriter();
227    
228                    if (printWriter != null) {
229                            httpServletResponse = new PipingServletResponse(
230                                    httpServletResponse, printWriter);
231                    }
232    
233                    return httpServletResponse;
234            }
235    
236            protected Set<String> getServletURLPatterns(
237                    ServletRequest servletRequest, PortletRequest portletRequest,
238                    PortletResponse portletResponse) {
239    
240                    PortletRequestImpl portletRequestImpl =
241                            PortletRequestImpl.getPortletRequestImpl(portletRequest);
242    
243                    Portlet portlet = portletRequestImpl.getPortlet();
244    
245                    PortletApp portletApp = portlet.getPortletApp();
246    
247                    return portletApp.getServletURLPatterns();
248            }
249    
250            private String _path;
251            private RequestDispatcher _requestDispatcher;
252    
253    }