1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   *
12   *
13   */
14  
15  package com.liferay.portal.upload;
16  
17  import com.liferay.portal.kernel.util.FileUtil;
18  import com.liferay.portal.kernel.util.GetterUtil;
19  import com.liferay.portal.kernel.util.StringPool;
20  import com.liferay.portal.util.PropsUtil;
21  
22  import java.io.File;
23  
24  import org.apache.commons.fileupload.disk.DiskFileItem;
25  
26  /**
27   * <a href="LiferayFileItem.java.html"><b><i>View Source</i></b></a>
28   *
29   * @author Brian Wing Shun Chan
30   * @author Zongliang Li
31   * @author Harry Mark
32   */
33  public class LiferayFileItem extends DiskFileItem {
34  
35      public static final int THRESHOLD_SIZE = GetterUtil.getInteger(
36          PropsUtil.get(LiferayFileItem.class.getName() + ".threshold.size"));
37  
38      public LiferayFileItem(
39          String fieldName, String contentType, boolean isFormField,
40          String fileName, int sizeThreshold, File repository) {
41  
42          super(
43              fieldName, contentType, isFormField, fileName, sizeThreshold,
44              repository);
45  
46          _fileName = fileName;
47          _repository = repository;
48      }
49  
50      public String getFileName() {
51          if (_fileName == null) {
52              return null;
53          }
54  
55          int pos = _fileName.lastIndexOf("/");
56  
57          if (pos == -1) {
58              pos = _fileName.lastIndexOf("\\");
59          }
60  
61          if (pos == -1) {
62              return _fileName;
63          }
64          else {
65              return _fileName.substring(pos + 1, _fileName.length());
66          }
67      }
68  
69      public String getFullFileName() {
70          return _fileName;
71      }
72  
73      public String getFileNameExtension() {
74          return FileUtil.getExtension(_fileName);
75      }
76  
77      public String getString() {
78  
79          // Prevent serialization of uploaded content
80  
81          if (getSize() > THRESHOLD_SIZE) {
82              return StringPool.BLANK;
83          }
84  
85          if (_encodedString == null) {
86              return super.getString();
87          }
88          else {
89              return _encodedString;
90          }
91      }
92  
93      public void setString(String encode) {
94          try {
95              _encodedString = getString(encode);
96          }
97          catch (Exception e) {
98          }
99      }
100 
101     protected File getTempFile() {
102         String tempFileName = "upload_" + _getUniqueId();
103 
104         String extension = getFileNameExtension();
105 
106         if (extension != null) {
107             tempFileName += "." + extension;
108         }
109 
110         File tempFile = new File(_repository, tempFileName);
111 
112         tempFile.deleteOnExit();
113 
114         return tempFile;
115     }
116 
117     private static String _getUniqueId() {
118         int current;
119 
120         synchronized (LiferayFileItem.class) {
121             current = _counter++;
122         }
123 
124         String id = String.valueOf(current);
125 
126         if (current < 100000000) {
127             id = ("00000000" + id).substring(id.length());
128         }
129 
130         return id;
131     }
132 
133     private static int _counter = 0;
134 
135     private String _fileName;
136     private File _repository;
137     private String _encodedString;
138 
139 }