001    /**
002     * Copyright (c) 2000-2011 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
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            public void forward(
059                            ServletRequest servletRequest, ServletResponse servletResponse)
060                    throws IOException, ServletException {
061    
062                    forward(servletRequest, servletResponse, false);
063            }
064    
065            public void forward(
066                            ServletRequest servletRequest, ServletResponse servletResponse,
067                            boolean named)
068                    throws IOException, ServletException {
069    
070                    PortletRequest portletRequest =
071                            (PortletRequest)servletRequest.getAttribute(
072                                    JavaConstants.JAVAX_PORTLET_REQUEST);
073    
074                    if (portletRequest != null) {
075                            invoke(servletRequest, servletResponse, named, false);
076                    }
077                    else {
078                            _requestDispatcher.forward(servletRequest, servletResponse);
079                    }
080            }
081    
082            public void include(
083                            ServletRequest servletRequest, ServletResponse servletResponse)
084                    throws IOException, ServletException {
085    
086                    include(servletRequest, servletResponse, false);
087            }
088    
089            public void include(
090                            ServletRequest servletRequest, ServletResponse servletResponse,
091                            boolean named)
092                    throws IOException, ServletException {
093    
094                    PortletRequest portletRequest =
095                            (PortletRequest)servletRequest.getAttribute(
096                                    JavaConstants.JAVAX_PORTLET_REQUEST);
097    
098                    if (portletRequest != null) {
099                            invoke(servletRequest, servletResponse, named, true);
100                    }
101                    else {
102                            _requestDispatcher.include(servletRequest, servletResponse);
103                    }
104            }
105    
106            public void invoke(
107                            ServletRequest servletRequest, ServletResponse servletResponse,
108                            boolean named, boolean include)
109                    throws IOException, ServletException {
110    
111                    String pathInfo = null;
112                    String queryString = null;
113                    String requestURI = null;
114                    String servletPath = null;
115    
116                    PortletRequest portletRequest =
117                            (PortletRequest)servletRequest.getAttribute(
118                                    JavaConstants.JAVAX_PORTLET_REQUEST);
119    
120                    PortletResponse portletResponse =
121                            (PortletResponse)servletRequest.getAttribute(
122                                    JavaConstants.JAVAX_PORTLET_RESPONSE);
123    
124                    if (_path != null) {
125                            String pathNoQueryString = _path;
126    
127                            int pos = _path.indexOf(CharPool.QUESTION);
128    
129                            if (pos != -1) {
130                                    pathNoQueryString = _path.substring(0, pos);
131                                    queryString = _path.substring(pos + 1, _path.length());
132                            }
133    
134                            Set<String> servletURLPatterns = getServletURLPatterns(
135                                    servletRequest, portletRequest, portletResponse);
136    
137                            for (String urlPattern : servletURLPatterns) {
138                                    if (urlPattern.endsWith("/*")) {
139                                            pos = urlPattern.indexOf("/*");
140    
141                                            urlPattern = urlPattern.substring(0, pos);
142    
143                                            if (pathNoQueryString.startsWith(urlPattern)) {
144                                                    pathInfo = pathNoQueryString.substring(
145                                                            urlPattern.length());
146                                                    servletPath = urlPattern;
147    
148                                                    break;
149                                            }
150                                    }
151                            }
152    
153                            if ((pathInfo == null) && (servletPath == null)) {
154                                    pathInfo = StringPool.BLANK;
155                                    servletPath = pathNoQueryString;
156                            }
157    
158                            requestURI = portletRequest.getContextPath() + pathNoQueryString;
159                    }
160    
161                    HttpServletRequest portletServletRequest = getPortletServletRequest(
162                            servletRequest, portletRequest, pathInfo, queryString, requestURI,
163                            servletPath, named, include);
164    
165                    HttpServletResponse portletServletResponse =
166                            getPortletServletResponse(
167                                    servletResponse, portletRequest, portletResponse, include);
168    
169                    if (include) {
170                            _requestDispatcher.include(
171                                    portletServletRequest, portletServletResponse);
172                    }
173                    else {
174                            _requestDispatcher.forward(
175                                    portletServletRequest, portletServletResponse);
176                    }
177            }
178    
179            protected HttpServletRequest getPortletServletRequest(
180                    ServletRequest servletRequest, PortletRequest portletRequest,
181                    String pathInfo, String queryString, String requestURI,
182                    String servletPath, boolean named, boolean include) {
183    
184                    HttpServletRequest request = (HttpServletRequest)servletRequest;
185    
186                    PortletRequestImpl portletRequestImpl =
187                            (PortletRequestImpl)portletRequest;
188    
189                    return new PortletServletRequest(
190                            request, portletRequestImpl, pathInfo, queryString, requestURI,
191                            servletPath, named, include);
192            }
193    
194            protected HttpServletResponse getPortletServletResponse(
195                            ServletResponse servletResponse, PortletRequest portletRequest,
196                            PortletResponse portletResponse, boolean include)
197                    throws IOException {
198    
199                    HttpServletResponse response = (HttpServletResponse)servletResponse;
200    
201                    PortletResponseImpl portletResponseImpl =
202                            (PortletResponseImpl)portletResponse;
203    
204                    HttpServletResponse httpServletResponse = new PortletServletResponse(
205                            response, portletResponseImpl, include);
206    
207                    PrintWriter printWriter = servletResponse.getWriter();
208    
209                    if (printWriter != null) {
210                            httpServletResponse = new PipingServletResponse(
211                                    httpServletResponse, printWriter);
212                    }
213    
214                    return httpServletResponse;
215            }
216    
217            protected Set<String> getServletURLPatterns(
218                    ServletRequest servletRequest, PortletRequest portletRequest,
219                    PortletResponse portletResponse) {
220    
221                    PortletRequestImpl portletRequestImpl =
222                            (PortletRequestImpl)portletRequest;
223    
224                    Portlet portlet = portletRequestImpl.getPortlet();
225    
226                    PortletApp portletApp = portlet.getPortletApp();
227    
228                    return portletApp.getServletURLPatterns();
229            }
230    
231            private RequestDispatcher _requestDispatcher;
232            private String _path;
233    
234    }