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.messageboards.action;
24  
25  import com.liferay.documentlibrary.service.DLLocalServiceUtil;
26  import com.liferay.portal.kernel.util.ParamUtil;
27  import com.liferay.portal.model.CompanyConstants;
28  import com.liferay.portal.struts.ActionConstants;
29  import com.liferay.portal.struts.PortletAction;
30  import com.liferay.portal.util.MimeTypesUtil;
31  import com.liferay.portlet.ActionResponseImpl;
32  import com.liferay.portlet.messageboards.model.MBMessage;
33  import com.liferay.portlet.messageboards.service.MBMessageServiceUtil;
34  import com.liferay.util.servlet.ServletResponseUtil;
35  
36  import java.io.InputStream;
37  
38  import javax.portlet.ActionRequest;
39  import javax.portlet.ActionResponse;
40  import javax.portlet.PortletConfig;
41  
42  import javax.servlet.http.HttpServletRequest;
43  import javax.servlet.http.HttpServletResponse;
44  import javax.servlet.jsp.PageContext;
45  
46  import org.apache.struts.action.ActionForm;
47  import org.apache.struts.action.ActionForward;
48  import org.apache.struts.action.ActionMapping;
49  
50  /**
51   * <a href="GetMessageAttachmentAction.java.html"><b><i>View Source</i></b></a>
52   *
53   * @author Brian Wing Shun Chan
54   *
55   */
56  public class GetMessageAttachmentAction extends PortletAction {
57  
58      public ActionForward strutsExecute(
59              ActionMapping mapping, ActionForm form, HttpServletRequest req,
60              HttpServletResponse res)
61          throws Exception {
62  
63          try {
64              long messageId = ParamUtil.getLong(req, "messageId");
65              String fileName = ParamUtil.getString(req, "attachment");
66  
67              getFile(messageId, fileName, res);
68  
69              return null;
70          }
71          catch (Exception e) {
72              req.setAttribute(PageContext.EXCEPTION, e);
73  
74              return mapping.findForward(ActionConstants.COMMON_ERROR);
75          }
76      }
77  
78      public void processAction(
79              ActionMapping mapping, ActionForm form, PortletConfig config,
80              ActionRequest req, ActionResponse res)
81          throws Exception {
82  
83          long messageId = ParamUtil.getLong(req, "messageId");
84          String fileName = ParamUtil.getString(req, "attachment");
85  
86          HttpServletResponse httpRes =
87              ((ActionResponseImpl)res).getHttpServletResponse();
88  
89          getFile(messageId, fileName, httpRes);
90  
91          setForward(req, ActionConstants.COMMON_NULL);
92      }
93  
94      protected void getFile(
95              long messageId, String fileName, HttpServletResponse res)
96          throws Exception {
97  
98          InputStream is = null;
99  
100         try {
101             MBMessage message = MBMessageServiceUtil.getMessage(messageId);
102 
103             is = DLLocalServiceUtil.getFileAsStream(
104                 message.getCompanyId(), CompanyConstants.SYSTEM,
105                 message.getAttachmentsDir() + "/" + fileName);
106 
107             String contentType = MimeTypesUtil.getContentType(fileName);
108 
109             ServletResponseUtil.sendFile(res, fileName, is, contentType);
110         }
111         finally {
112             ServletResponseUtil.cleanUp(is);
113         }
114     }
115 
116     protected boolean isCheckMethodOnProcessAction() {
117         return _CHECK_METHOD_ON_PROCESS_ACTION;
118     }
119 
120     private static final boolean _CHECK_METHOD_ON_PROCESS_ACTION = false;
121 
122 }