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.MimeTypesUtil;
27  import com.liferay.portal.kernel.util.ParamUtil;
28  import com.liferay.portal.model.CompanyConstants;
29  import com.liferay.portal.struts.ActionConstants;
30  import com.liferay.portal.struts.PortletAction;
31  import com.liferay.portal.util.PortalUtil;
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  
45  import org.apache.struts.action.ActionForm;
46  import org.apache.struts.action.ActionForward;
47  import org.apache.struts.action.ActionMapping;
48  
49  /**
50   * <a href="GetMessageAttachmentAction.java.html"><b><i>View Source</i></b></a>
51   *
52   * @author Brian Wing Shun Chan
53   *
54   */
55  public class GetMessageAttachmentAction extends PortletAction {
56  
57      public ActionForward strutsExecute(
58              ActionMapping mapping, ActionForm form, HttpServletRequest request,
59              HttpServletResponse response)
60          throws Exception {
61  
62          try {
63              long messageId = ParamUtil.getLong(request, "messageId");
64              String fileName = ParamUtil.getString(request, "attachment");
65  
66              getFile(messageId, fileName, response);
67  
68              return null;
69          }
70          catch (Exception e) {
71              PortalUtil.sendError(e, request, response);
72  
73              return null;
74          }
75      }
76  
77      public void processAction(
78              ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
79              ActionRequest actionRequest, ActionResponse actionResponse)
80          throws Exception {
81  
82          try {
83              long messageId = ParamUtil.getLong(actionRequest, "messageId");
84              String fileName = ParamUtil.getString(actionRequest, "attachment");
85  
86              HttpServletResponse response = PortalUtil.getHttpServletResponse(
87                  actionResponse);
88  
89              getFile(messageId, fileName, response);
90  
91              setForward(actionRequest, ActionConstants.COMMON_NULL);
92          }
93          catch (Exception e) {
94              PortalUtil.sendError(e, actionRequest, actionResponse);
95          }
96      }
97  
98      protected void getFile(
99              long messageId, String fileName, HttpServletResponse response)
100         throws Exception {
101 
102         InputStream is = null;
103 
104         try {
105             MBMessage message = MBMessageServiceUtil.getMessage(messageId);
106 
107             is = DLLocalServiceUtil.getFileAsStream(
108                 message.getCompanyId(), CompanyConstants.SYSTEM,
109                 message.getAttachmentsDir() + "/" + fileName);
110 
111             String contentType = MimeTypesUtil.getContentType(fileName);
112 
113             ServletResponseUtil.sendFile(response, fileName, is, contentType);
114         }
115         finally {
116             ServletResponseUtil.cleanUp(is);
117         }
118     }
119 
120     protected boolean isCheckMethodOnProcessAction() {
121         return _CHECK_METHOD_ON_PROCESS_ACTION;
122     }
123 
124     private static final boolean _CHECK_METHOD_ON_PROCESS_ACTION = false;
125 
126 }