1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.servlet;
24  
25  import com.liferay.portal.NoSuchGroupException;
26  import com.liferay.portal.NoSuchLayoutException;
27  import com.liferay.portal.NoSuchUserException;
28  import com.liferay.portal.kernel.util.GetterUtil;
29  import com.liferay.portal.kernel.util.StringPool;
30  import com.liferay.portal.kernel.util.Validator;
31  import com.liferay.portal.model.Group;
32  import com.liferay.portal.model.User;
33  import com.liferay.portal.service.GroupLocalServiceUtil;
34  import com.liferay.portal.service.UserLocalServiceUtil;
35  import com.liferay.portal.struts.LastPath;
36  import com.liferay.portal.util.PortalInstances;
37  import com.liferay.portal.util.PortalUtil;
38  import com.liferay.portal.util.WebKeys;
39  
40  import java.io.IOException;
41  
42  import java.util.Map;
43  
44  import javax.servlet.RequestDispatcher;
45  import javax.servlet.ServletConfig;
46  import javax.servlet.ServletContext;
47  import javax.servlet.ServletException;
48  import javax.servlet.http.HttpServlet;
49  import javax.servlet.http.HttpServletRequest;
50  import javax.servlet.http.HttpServletResponse;
51  
52  import org.apache.commons.logging.Log;
53  import org.apache.commons.logging.LogFactory;
54  
55  /**
56   * <a href="FriendlyURLServlet.java.html"><b><i>View Source</i></b></a>
57   *
58   * @author Brian Wing Shun Chan
59   * @author Jorge Ferrer
60   *
61   */
62  public class FriendlyURLServlet extends HttpServlet {
63  
64      public void init(ServletConfig config) throws ServletException {
65          super.init(config);
66  
67          _private = GetterUtil.getBoolean(config.getInitParameter("private"));
68          _user = GetterUtil.getBoolean(config.getInitParameter("user"));
69      }
70  
71      public void service(HttpServletRequest req, HttpServletResponse res)
72          throws IOException, ServletException {
73  
74          ServletContext ctx = getServletContext();
75  
76          // Do not set the entire full main path. See LEP-456.
77  
78          //String mainPath = (String)ctx.getAttribute(WebKeys.MAIN_PATH);
79          String mainPath = PortalUtil.PATH_MAIN;
80  
81          String friendlyURLPath = null;
82  
83          if (_private) {
84              if (_user) {
85                  friendlyURLPath = PortalUtil.getPathFriendlyURLPrivateUser();
86              }
87              else {
88                  friendlyURLPath = PortalUtil.getPathFriendlyURLPrivateGroup();
89              }
90          }
91          else {
92              friendlyURLPath = PortalUtil.getPathFriendlyURLPublic();
93          }
94  
95          req.setAttribute(
96              WebKeys.FRIENDLY_URL, friendlyURLPath + req.getPathInfo());
97  
98          String redirect = mainPath;
99  
100         try {
101             redirect = getRedirect(
102                 req, req.getPathInfo(), mainPath, req.getParameterMap());
103 
104             if (req.getAttribute(WebKeys.LAST_PATH) == null) {
105                 LastPath lastPath = new LastPath(
106                     friendlyURLPath, req.getPathInfo(), req.getParameterMap());
107 
108                 req.setAttribute(WebKeys.LAST_PATH, lastPath);
109             }
110         }
111         catch (NoSuchLayoutException nsle) {
112             _log.warn(nsle);
113 
114             PortalUtil.sendError(
115                 HttpServletResponse.SC_NOT_FOUND, nsle, req, res);
116 
117             return;
118         }
119         catch (Exception e) {
120             if (_log.isWarnEnabled()) {
121                 _log.warn(e);
122             }
123         }
124 
125         if (Validator.isNull(redirect)) {
126             redirect = mainPath;
127         }
128 
129         if (_log.isDebugEnabled()) {
130             _log.debug("Redirect " + redirect);
131         }
132 
133         if (redirect.startsWith(StringPool.SLASH)) {
134             RequestDispatcher rd = ctx.getRequestDispatcher(redirect);
135 
136             if (rd != null) {
137                 rd.forward(req, res);
138             }
139         }
140         else {
141             res.sendRedirect(redirect);
142         }
143     }
144 
145     protected String getRedirect(
146             HttpServletRequest req, String path, String mainPath, Map params)
147         throws Exception {
148 
149         if (Validator.isNull(path)) {
150             return mainPath;
151         }
152 
153         if (!path.startsWith(StringPool.SLASH)) {
154             return mainPath;
155         }
156 
157         // Group friendly URL
158 
159         String friendlyURL = null;
160 
161         int pos = path.indexOf(StringPool.SLASH, 1);
162 
163         if (pos != -1) {
164             friendlyURL = path.substring(0, pos);
165         }
166         else {
167             if (path.length() > 1) {
168                 friendlyURL = path.substring(0, path.length());
169             }
170         }
171 
172         if (Validator.isNull(friendlyURL)) {
173             return mainPath;
174         }
175 
176         long companyId = PortalInstances.getCompanyId(req);
177 
178         Group group = null;
179 
180         try {
181             group = GroupLocalServiceUtil.getFriendlyURLGroup(
182                 companyId, friendlyURL);
183         }
184         catch (NoSuchGroupException nsge) {
185         }
186 
187         if (group == null) {
188             String screenName = friendlyURL.substring(1);
189 
190             if (_user || !Validator.isNumber(screenName)) {
191                 try {
192                     User user = UserLocalServiceUtil.getUserByScreenName(
193                         companyId, screenName);
194 
195                     group = user.getGroup();
196                 }
197                 catch (NoSuchUserException nsue) {
198                     if (_log.isWarnEnabled()) {
199                         _log.warn(
200                             "No user exists with friendly URL " + screenName);
201                     }
202                 }
203             }
204             else {
205                 long groupId = GetterUtil.getLong(screenName);
206 
207                 try {
208                     group = GroupLocalServiceUtil.getGroup(groupId);
209                 }
210                 catch (NoSuchGroupException nsge) {
211                     if (_log.isDebugEnabled()) {
212                         _log.debug(
213                             "No group exists with friendly URL " + groupId +
214                                 ". Try fetching by screen name instead.");
215                     }
216 
217                     try {
218                         User user = UserLocalServiceUtil.getUserByScreenName(
219                             companyId, screenName);
220 
221                         group = user.getGroup();
222                     }
223                     catch (NoSuchUserException nsue) {
224                         if (_log.isWarnEnabled()) {
225                             _log.warn(
226                                 "No user or group exists with friendly URL " +
227                                     groupId);
228                         }
229                     }
230                 }
231             }
232         }
233 
234         if (group == null) {
235             return mainPath;
236         }
237 
238         // Layout friendly URL
239 
240         friendlyURL = null;
241 
242         if ((pos != -1) && ((pos + 1) != path.length())) {
243             friendlyURL = path.substring(pos, path.length());
244         }
245 
246         return PortalUtil.getLayoutActualURL(
247             group.getGroupId(), _private, mainPath, friendlyURL, params);
248     }
249 
250     private static Log _log = LogFactory.getLog(FriendlyURLServlet.class);
251 
252     private boolean _private;
253     private boolean _user;
254 
255 }