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.portlet.wiki.action;
24  
25  import com.liferay.portal.kernel.servlet.SessionErrors;
26  import com.liferay.portal.kernel.util.StringPool;
27  import com.liferay.portal.security.auth.PrincipalException;
28  import com.liferay.portal.security.permission.ActionKeys;
29  import com.liferay.portal.security.permission.PermissionChecker;
30  import com.liferay.portal.struts.PortletAction;
31  import com.liferay.portal.theme.ThemeDisplay;
32  import com.liferay.portal.util.PropsKeys;
33  import com.liferay.portal.util.PropsUtil;
34  import com.liferay.portal.util.WebKeys;
35  import com.liferay.portlet.wiki.NoSuchNodeException;
36  import com.liferay.portlet.wiki.NoSuchPageException;
37  import com.liferay.portlet.wiki.model.WikiNode;
38  import com.liferay.portlet.wiki.service.WikiNodeLocalServiceUtil;
39  import com.liferay.portlet.wiki.service.permission.WikiNodePermission;
40  import com.liferay.portlet.wiki.util.WikiUtil;
41  
42  import java.util.List;
43  
44  import javax.portlet.PortletConfig;
45  import javax.portlet.RenderRequest;
46  import javax.portlet.RenderResponse;
47  
48  import org.apache.struts.action.ActionForm;
49  import org.apache.struts.action.ActionForward;
50  import org.apache.struts.action.ActionMapping;
51  
52  /**
53   * <a href="ViewPageAction.java.html"><b><i>View Source</i></b></a>
54   *
55   * @author Brian Wing Shun Chan
56   * @author Jorge Ferrer
57   *
58   */
59  public class ViewPageAction extends PortletAction {
60  
61      public ActionForward render(
62              ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
63              RenderRequest renderRequest, RenderResponse renderResponse)
64          throws Exception {
65  
66          try {
67              getNode(renderRequest);
68              ActionUtil.getPage(renderRequest);
69          }
70          catch (Exception e) {
71              if (e instanceof NoSuchNodeException ||
72                  e instanceof NoSuchPageException ||
73                  e instanceof PrincipalException) {
74  
75                  SessionErrors.add(renderRequest, e.getClass().getName());
76  
77                  return mapping.findForward("portlet.wiki.error");
78              }
79              else {
80                  throw e;
81              }
82          }
83  
84          return mapping.findForward(
85              getForward(renderRequest, "portlet.wiki.view_page"));
86      }
87  
88      protected void getNode(RenderRequest renderRequest) throws Exception {
89          ActionUtil.getNode(renderRequest);
90  
91          WikiNode node = (WikiNode)renderRequest.getAttribute(WebKeys.WIKI_NODE);
92  
93          if (node != null) {
94              return;
95          }
96  
97          ThemeDisplay themeDisplay = (ThemeDisplay)renderRequest.getAttribute(
98              WebKeys.THEME_DISPLAY);
99  
100         List<WikiNode> nodes = WikiUtil.getNodes(renderRequest);
101 
102         if (nodes.size() == 0) {
103             String nodeName = PropsUtil.get(PropsKeys.WIKI_INITIAL_NODE_NAME);
104 
105             node = WikiNodeLocalServiceUtil.addNode(
106                 themeDisplay.getUserId(), themeDisplay.getPlid(), nodeName,
107                 StringPool.BLANK, true, true);
108         }
109         else {
110             PermissionChecker permissionChecker =
111                 themeDisplay.getPermissionChecker();
112 
113             for (WikiNode curNode : nodes) {
114                 if (WikiNodePermission.contains(
115                         permissionChecker, curNode.getNodeId(),
116                         ActionKeys.VIEW)) {
117 
118                     node = curNode;
119 
120                     break;
121                 }
122             }
123 
124             if (node == null) {
125                 throw new PrincipalException();
126             }
127         }
128 
129         renderRequest.setAttribute(WebKeys.WIKI_NODE, node);
130     }
131 
132     protected boolean isCheckMethodOnProcessAction() {
133         return false;
134     }
135 
136 }