Autopsy  4.5.0
Graphical digital forensics platform for The Sleuth Kit and other tools.
FileViewer.java
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1 /*
2  * Autopsy Forensic Browser
3  *
4  * Copyright 2018 Basis Technology Corp.
5  * Contact: carrier <at> sleuthkit <dot> org
6  *
7  * Licensed under the Apache License, Version 2.0 (the "License");
8  * you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at
10  *
11  * http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing, software
14  * distributed under the License is distributed on an "AS IS" BASIS,
15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  * See the License for the specific language governing permissions and
17  * limitations under the License.
18  */
19 package org.sleuthkit.autopsy.contentviewers;
20 
21 import com.google.common.base.Strings;
22 import java.awt.Component;
23 import java.util.HashMap;
24 import java.util.Map;
25 import java.util.logging.Level;
26 import org.openide.nodes.Node;
27 import org.openide.util.NbBundle;
28 import org.openide.util.lookup.ServiceProvider;
32 import org.sleuthkit.datamodel.AbstractFile;
33 
37 @ServiceProvider(service = DataContentViewer.class, position = 5)
38 public class FileViewer extends javax.swing.JPanel implements DataContentViewer {
39 
40  private static final int CONFIDENCE_LEVEL = 7;
41  private static final long serialVersionUID = 1L;
42  private static final Logger LOGGER = Logger.getLogger(FileViewer.class.getName());
43 
44  private final Map<String, FileTypeViewer> mimeTypeToViewerMap = new HashMap<>();
45 
46  // TBD: This hardcoded list of viewers should be replaced with a dynamic lookup
47  private static final FileTypeViewer[] KNOWN_VIEWERS = new FileTypeViewer[]{
48  // new JPEGViewerDummy(), // this if for testing only
49  new SQLiteViewer()
50  };
51 
52  private FileTypeViewer lastViewer;
53 
57  public FileViewer() {
58 
59  // init the mimetype to viewer map
60  for (FileTypeViewer cv : KNOWN_VIEWERS) {
61  cv.getSupportedMIMETypes().forEach((mimeType) -> {
62  if (mimeTypeToViewerMap.containsKey(mimeType) == false) {
63  mimeTypeToViewerMap.put(mimeType, cv);
64  } else {
65  LOGGER.log(Level.WARNING, "Duplicate viewer for mimtype: {0}", mimeType); //NON-NLS
66  }
67  });
68  }
69 
70  initComponents();
71 
72  LOGGER.log(Level.INFO, "Created ApplicationContentViewer instance: {0}", this); //NON-NLS
73  }
74 
82  private FileTypeViewer getSupportingViewer(String mimeType) {
83  return mimeTypeToViewerMap.get(mimeType);
84  }
85 
91  @SuppressWarnings("unchecked")
92  // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
93  private void initComponents() {
94 
95  setLayout(new javax.swing.OverlayLayout(this));
96  }// </editor-fold>//GEN-END:initComponents
97 
98 
99  // Variables declaration - do not modify//GEN-BEGIN:variables
100  // End of variables declaration//GEN-END:variables
101 
102  @Override
103  public void setNode(Node selectedNode) {
104 
105  resetComponent();
106 
107  if (selectedNode == null) {
108  return;
109  }
110 
111  AbstractFile file = selectedNode.getLookup().lookup(AbstractFile.class);
112  if (file == null) {
113  return;
114  }
115 
116  String mimeType = file.getMIMEType();
117  if (Strings.isNullOrEmpty(mimeType)) {
118  LOGGER.log(Level.INFO, "Mimetype not known for file: {0}", file.getName()); //NON-NLS
119  try {
120  FileTypeDetector fileTypeDetector = new FileTypeDetector();
121  mimeType = fileTypeDetector.getMIMEType(file);
123  LOGGER.log(Level.SEVERE, "Failed to initialize FileTypeDetector.", ex); //NON-NLS
124  return;
125  }
126  }
127 
128  if (mimeType.equalsIgnoreCase("application/octet-stream")) {
129  return;
130  }
131  else {
132  FileTypeViewer viewer = getSupportingViewer(mimeType);
133  if (viewer != null) {
134  lastViewer = viewer;
135 
136  viewer.setFile(file);
137  this.removeAll();
138  this.add(viewer.getComponent());
139  this.repaint();
140  }
141  }
142 
143  }
144 
145  @Override
146  @NbBundle.Messages("ApplicationContentViewer.title=Application")
147  public String getTitle() {
148  return Bundle.ApplicationContentViewer_title();
149  }
150 
151  @Override
152  @NbBundle.Messages("ApplicationContentViewer.toolTip=Displays file contents.")
153  public String getToolTip() {
154  return Bundle.ApplicationContentViewer_toolTip();
155  }
156 
157  @Override
158  public DataContentViewer createInstance() {
159  return new FileViewer();
160  }
161 
162  @Override
163  public Component getComponent() {
164  return this;
165  }
166 
167  @Override
168  public void resetComponent() {
169 
170  if (lastViewer != null) {
171  lastViewer.resetComponent();
172  }
173  this.removeAll();
174  lastViewer = null;
175  }
176 
177  @Override
178  public boolean isSupported(Node node) {
179 
180  if (node == null) {
181  return false;
182  }
183 
184  AbstractFile aFile = node.getLookup().lookup(AbstractFile.class);
185  if (aFile == null) {
186  return false;
187  }
188 
189  String mimeType = aFile.getMIMEType();
190  if (Strings.isNullOrEmpty(mimeType)) {
191  LOGGER.log(Level.INFO, "Mimetype not known for file: {0}", aFile.getName()); //NON-NLS
192  try {
193  FileTypeDetector fileTypeDetector = new FileTypeDetector();
194  mimeType = fileTypeDetector.getMIMEType(aFile);
196  LOGGER.log(Level.SEVERE, "Failed to initialize FileTypeDetector.", ex); //NON-NLS
197  return false;
198  }
199  }
200 
201  if (mimeType.equalsIgnoreCase("application/octet-stream")) {
202  return false;
203  } else {
204  return (getSupportingViewer(mimeType) != null);
205  }
206 
207  }
208 
209  @Override
210  public int isPreferred(Node node) {
211  AbstractFile file = node.getLookup().lookup(AbstractFile.class);
212  String mimeType = file.getMIMEType();
213 
214  if (Strings.isNullOrEmpty(mimeType)) {
215  LOGGER.log(Level.INFO, "Mimetype not known for file: {0}", file.getName()); //NON-NLS
216  try {
217  FileTypeDetector fileTypeDetector = new FileTypeDetector();
218  mimeType = fileTypeDetector.getMIMEType(file);
220  LOGGER.log(Level.SEVERE, "Failed to initialize FileTypeDetector.", ex); //NON-NLS
221  return 0;
222  }
223  }
224 
225  if (mimeType.equalsIgnoreCase("application/octet-stream")) {
226  return 0;
227  } else {
228  if (null != getSupportingViewer(mimeType)) {
229  return CONFIDENCE_LEVEL;
230  }
231  }
232 
233  return 0;
234  }
235 }
FileTypeViewer getSupportingViewer(String mimeType)
Definition: FileViewer.java:82
synchronized static Logger getLogger(String name)
Definition: Logger.java:124

Copyright © 2012-2016 Basis Technology. Generated on: Tue Feb 20 2018
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