1   /**
2    * Copyright (c) 2000-2009 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.webdav.methods;
24  
25  import com.liferay.portal.webdav.Resource;
26  import com.liferay.portal.webdav.WebDAVException;
27  import com.liferay.portal.webdav.WebDAVRequest;
28  import com.liferay.portal.webdav.WebDAVStorage;
29  
30  import javax.servlet.http.HttpServletResponse;
31  
32  /**
33   * <a href="HeadMethodImpl.java.html"><b><i>View Source</i></b></a>
34   *
35   * @author Brian Wing Shun Chan
36   * @author Alexander Chow
37   *
38   */
39  public class HeadMethodImpl implements Method {
40  
41      public int process(WebDAVRequest webDavRequest) throws WebDAVException {
42          try {
43              WebDAVStorage storage = webDavRequest.getWebDAVStorage();
44              HttpServletResponse response =
45                  webDavRequest.getHttpServletResponse();
46  
47              Resource resource = storage.getResource(webDavRequest);
48  
49              int status = HttpServletResponse.SC_NOT_FOUND;
50  
51              if (resource == null) {
52                  response.sendError(
53                      HttpServletResponse.SC_NOT_FOUND, webDavRequest.getPath());
54              }
55              else {
56                  if (!resource.isCollection()) {
57                      response.setContentLength(resource.getSize());
58                  }
59  
60                  status = HttpServletResponse.SC_OK;
61              }
62  
63              return status;
64          }
65          catch (Exception e) {
66              throw new WebDAVException(e);
67          }
68      }
69  
70  }