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hex/string viewer handle case when file offset could not be read, which can happen e.g. for deleted content

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This commit is contained in:
adam-m 2013-01-31 16:16:12 -05:00
parent 2cadfadfa9
commit 5b21911756
2 changed files with 232 additions and 197 deletions
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69
Core/src/org/sleuthkit/autopsy/corecomponents/DataContentViewerHex.java
View File

@ -50,7 +50,9 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
// for error handling
private String className = this.getClass().toString();
/** Creates new form DataContentViewerHex */
/**
* Creates new form DataContentViewerHex
*/
public DataContentViewerHex() {
initComponents();
customizeComponents();
@ -63,20 +65,21 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
@Override
public void actionPerformed(ActionEvent e) {
JMenuItem jmi = (JMenuItem) e.getSource();
if(jmi.equals(copyMenuItem))
if (jmi.equals(copyMenuItem)) {
outputViewPane.copy();
else if(jmi.equals(selectAllMenuItem))
} else if (jmi.equals(selectAllMenuItem)) {
outputViewPane.selectAll();
}
}
};
copyMenuItem.addActionListener(actList);
selectAllMenuItem.addActionListener(actList);
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
@ -273,7 +276,6 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
currentPageLabel.setText(Integer.toString(currentPage));
setDataView(dataSource, currentOffset, false);
}//GEN-LAST:event_goToPageTextFieldActionPerformed
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JMenuItem copyMenuItem;
private javax.swing.JLabel currentPageLabel;
@ -300,23 +302,39 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
* @param reset whether to reset the dataView or not
*/
public void setDataView(Content dataSource, long offset, boolean reset) {
if (dataSource == null) {
return;
}
// change the cursor to "waiting cursor" for this operation
this.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
try {
try {
this.dataSource = dataSource;
String errorText = null;
Boolean setVisible = false;
int bytesRead = 0;
if (!reset && dataSource.getSize() > 0) {
try {
bytesRead = dataSource.read(data, offset, pageLength); // read the data
} catch (TskException ex) {
setVisible = true;
errorText = "(offset " + currentOffset + "-" + (currentOffset + pageLength)
+ " could not be read)";
Logger.getLogger(this.className).log(Level.WARNING, "Error while trying to show the hex content.", ex);
}
}
// set the data on the bottom and show it
Boolean setVisible = false;
if (bytesRead > 0) {
setVisible = true;
}
else {
errorText = "(offset " + currentOffset + "-" + (currentOffset + pageLength)
+ " could not be read)";
setVisible = true;
}
// disable or enable the next button
if (!reset && offset + pageLength < dataSource.getSize()) {
@ -340,7 +358,13 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
// set the output view
int showLength = bytesRead < pageLength ? bytesRead : (int) pageLength;
if (errorText == null) {
outputViewPane.setText(DataConversion.byteArrayToHex(data, showLength, offset, outputViewPane.getFont()));
}
else {
outputViewPane.setText(errorText);
}
} else {
// reset or hide the labels
totalPageLabel.setText("");
@ -350,13 +374,9 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
}
outputViewPane.moveCaretPosition(0);
} catch (TskException ex) {
// TODO: maybe make this error bubble up further
Logger.getLogger(this.className).log(Level.WARNING, "Error while trying to show the hex content.", ex);
}
} finally {
this.setCursor(null);
}
}
@Override
@ -426,12 +446,12 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
if (node == null) {
return false;
}
FsContent fsContent = node.getLookup().lookup(FsContent.class);
LayoutFile lc = node.getLookup().lookup(LayoutFile.class);
if(fsContent != null && fsContent.getSize() != 0)
return true;
if(lc != null && lc.getSize() != 0)
Content content = node.getLookup().lookup(Content.class);
if (content != null && content.getSize() != 0) {
return true;
}
return false;
}
@ -455,7 +475,8 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
rightClickMenu.setLocation(evt.getLocationOnScreen());
rightClickMenu.setVisible(true);
copyMenuItem.setEnabled(outputViewPane.getSelectedText() != null);
}else
} else {
rightClickMenu.setVisible(false);
}
}
}

78
Core/src/org/sleuthkit/autopsy/corecomponents/DataContentViewerString.java
View File

@ -54,11 +54,12 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
private Content dataSource;
// for error handling
private String className = this.getClass().toString();
//string extract utility
private final StringExtract stringExtract = new StringExtract();
/** Creates new form DataContentViewerString */
/**
* Creates new form DataContentViewerString
*/
public DataContentViewerString() {
initComponents();
customizeComponents();
@ -71,11 +72,12 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
@Override
public void actionPerformed(ActionEvent e) {
JMenuItem jmi = (JMenuItem) e.getSource();
if(jmi.equals(copyMenuItem))
if (jmi.equals(copyMenuItem)) {
outputViewPane.copy();
else if(jmi.equals(selectAllMenuItem))
} else if (jmi.equals(selectAllMenuItem)) {
outputViewPane.selectAll();
}
}
};
copyMenuItem.addActionListener(actList);
selectAllMenuItem.addActionListener(actList);
@ -87,10 +89,10 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
@ -296,7 +298,6 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
setDataView(dataSource, currentOffset, false);
}
}//GEN-LAST:event_languageComboActionPerformed
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JMenuItem copyMenuItem;
private javax.swing.JLabel currentPageLabel;
@ -325,21 +326,30 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
* @param reset whether to reset the dataView or not
*/
public void setDataView(Content dataSource, long offset, boolean reset) {
if (dataSource == null) {
return;
}
// change the cursor to "waiting cursor" for this operation
this.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
try {
try {
this.dataSource = dataSource;
int bytesRead = 0;
if (!reset && dataSource.getSize() > 0) {
bytesRead = dataSource.read(data, offset, pageLength); // read the data
}
// set the data on the bottom and show it
String text = "";
Boolean setVisible = false;
if (!reset && dataSource.getSize() > 0) {
try {
bytesRead = dataSource.read(data, offset, pageLength); // read the data
} catch (TskException ex) {
text = "(offset " + currentOffset + "-" + (currentOffset + pageLength)
+ " could not be read)";
setVisible = true;
Logger logger = Logger.getLogger(this.className);
logger.log(Level.WARNING, "Error while trying to show the String content.", ex);
}
}
if (bytesRead > 0) {
//text = DataConversion.getString(data, bytesRead, 4);
@ -353,6 +363,10 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
}
setVisible = true;
} else {
text = "(offset " + currentOffset + "-" + (currentOffset + pageLength)
+ " could not be read)";
setVisible = true;
}
// disable or enable the next button
@ -383,13 +397,9 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
setComponentsVisibility(false); // hides the components that not needed
}
outputViewPane.moveCaretPosition(0);
} catch (TskException ex) {
Logger logger = Logger.getLogger(this.className);
logger.log(Level.WARNING, "Error while trying to show the String content.", ex);
}
} finally {
this.setCursor(null);
}
}
/**
@ -421,11 +431,11 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
if (selectedNode != null) {
Lookup lookup = selectedNode.getLookup();
Content content = lookup.lookup(Content.class);
if (content != null) {
if (content
!= null) {
this.setDataView(content, 0, false);
return;
}
else{
} else {
StringContent scontent = selectedNode.getLookup().lookup(StringContent.class);
if (scontent != null) {
this.setDataView(scontent);
@ -433,7 +443,6 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
}
}
}
this.setDataView(null, 0, true);
}
@ -469,13 +478,17 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
public boolean isSupported(Node node) {
if (node == null) {
return false;
}
FsContent fsContent = node.getLookup().lookup(FsContent.class);
LayoutFile lc = node.getLookup().lookup(LayoutFile.class);
if(fsContent != null && fsContent.getSize() != 0)
return true;
if(lc != null && lc.getSize() != 0)
Content content = node.getLookup().lookup(Content.class);
if (content
!= null && content.getSize()
!= 0) {
return true;
}
return false;
}
@ -523,7 +536,8 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
rightClickMenu.setLocation(evt.getLocationOnScreen());
rightClickMenu.setVisible(true);
copyMenuItem.setEnabled(outputViewPane.getSelectedText() != null);
}else
} else {
rightClickMenu.setVisible(false);
}
}
}