mirror of
https://github.com/overcuriousity/autopsy-flatpak.git
synced 2025-07-18 02:27:42 +00:00
hex/string viewer handle case when file offset could not be read, which can happen e.g. for deleted content
This commit is contained in:
adam-m
parent
2cadfadfa9
commit
5b21911756
@ -39,44 +39,47 @@ import org.sleuthkit.datamodel.TskException;
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/**
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* Hex view of file contents.
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*/
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@ServiceProvider(service = DataContentViewer.class, position=1)
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@ServiceProvider(service = DataContentViewer.class, position = 1)
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public class DataContentViewerHex extends javax.swing.JPanel implements DataContentViewer {
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private static long currentOffset = 0;
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private static final long pageLength = 16384;
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private final byte[] data = new byte[(int)pageLength];
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private final byte[] data = new byte[(int) pageLength];
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private static int currentPage = 1;
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private Content dataSource;
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// for error handling
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private String className = this.getClass().toString();
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/** Creates new form DataContentViewerHex */
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/**
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* Creates new form DataContentViewerHex
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*/
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public DataContentViewerHex() {
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initComponents();
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customizeComponents();
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this.resetComponent();
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}
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private void customizeComponents(){
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private void customizeComponents() {
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outputViewPane.setComponentPopupMenu(rightClickMenu);
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ActionListener actList = new ActionListener(){
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ActionListener actList = new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e){
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public void actionPerformed(ActionEvent e) {
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JMenuItem jmi = (JMenuItem) e.getSource();
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if(jmi.equals(copyMenuItem))
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if (jmi.equals(copyMenuItem)) {
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outputViewPane.copy();
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else if(jmi.equals(selectAllMenuItem))
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} else if (jmi.equals(selectAllMenuItem)) {
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outputViewPane.selectAll();
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}
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}
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};
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copyMenuItem.addActionListener(actList);
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selectAllMenuItem.addActionListener(actList);
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}
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/** This method is called from within the constructor to
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* initialize the form.
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* WARNING: Do NOT modify this code. The content of this method is
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* always regenerated by the Form Editor.
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/**
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* This method is called from within the constructor to initialize the form.
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* WARNING: Do NOT modify this code. The content of this method is always
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* regenerated by the Form Editor.
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*/
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@SuppressWarnings("unchecked")
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// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
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@ -257,7 +260,7 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
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private void goToPageTextFieldActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_goToPageTextFieldActionPerformed
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String pageNumberStr = goToPageTextField.getText();
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int pageNumber = 0;
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int maxPage = Math.round((dataSource.getSize()-1) / pageLength) + 1;
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int maxPage = Math.round((dataSource.getSize() - 1) / pageLength) + 1;
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try {
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pageNumber = Integer.parseInt(pageNumberStr);
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} catch (NumberFormatException ex) {
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@ -268,12 +271,11 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
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"Invalid page number", JOptionPane.WARNING_MESSAGE);
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return;
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}
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currentOffset = (pageNumber-1) * pageLength;
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currentOffset = (pageNumber - 1) * pageLength;
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currentPage = pageNumber;
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currentPageLabel.setText(Integer.toString(currentPage));
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setDataView(dataSource, currentOffset, false);
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}//GEN-LAST:event_goToPageTextFieldActionPerformed
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// Variables declaration - do not modify//GEN-BEGIN:variables
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private javax.swing.JMenuItem copyMenuItem;
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private javax.swing.JLabel currentPageLabel;
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@ -300,23 +302,39 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
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* @param reset whether to reset the dataView or not
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*/
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public void setDataView(Content dataSource, long offset, boolean reset) {
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if (dataSource == null) {
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return;
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}
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// change the cursor to "waiting cursor" for this operation
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this.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
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try {
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try {
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this.dataSource = dataSource;
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int bytesRead =0;
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this.dataSource = dataSource;
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String errorText = null;
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Boolean setVisible = false;
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int bytesRead = 0;
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if (!reset && dataSource.getSize() > 0) {
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try {
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bytesRead = dataSource.read(data, offset, pageLength); // read the data
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} catch (TskException ex) {
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setVisible = true;
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errorText = "(offset " + currentOffset + "-" + (currentOffset + pageLength)
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+ " could not be read)";
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Logger.getLogger(this.className).log(Level.WARNING, "Error while trying to show the hex content.", ex);
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}
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}
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// set the data on the bottom and show it
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Boolean setVisible = false;
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if (bytesRead > 0) {
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setVisible = true;
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}
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else {
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errorText = "(offset " + currentOffset + "-" + (currentOffset + pageLength)
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+ " could not be read)";
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setVisible = true;
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}
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// disable or enable the next button
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if (!reset && offset + pageLength < dataSource.getSize()) {
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@ -333,14 +351,20 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
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}
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if (setVisible) {
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int totalPage = Math.round((dataSource.getSize()-1) / pageLength) + 1;
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int totalPage = Math.round((dataSource.getSize() - 1) / pageLength) + 1;
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totalPageLabel.setText(Integer.toString(totalPage));
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currentPageLabel.setText(Integer.toString(currentPage));
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setComponentsVisibility(true); // shows the components that not needed
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// set the output view
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int showLength = bytesRead<pageLength?bytesRead:(int)pageLength;
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int showLength = bytesRead < pageLength ? bytesRead : (int) pageLength;
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if (errorText == null) {
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outputViewPane.setText(DataConversion.byteArrayToHex(data, showLength, offset, outputViewPane.getFont()));
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}
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else {
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outputViewPane.setText(errorText);
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}
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} else {
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// reset or hide the labels
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totalPageLabel.setText("");
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@ -350,18 +374,14 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
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}
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outputViewPane.moveCaretPosition(0);
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} catch (TskException ex) {
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// TODO: maybe make this error bubble up further
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Logger.getLogger(this.className).log(Level.WARNING, "Error while trying to show the hex content.", ex);
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}
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} finally {
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this.setCursor(null);
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}
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}
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@Override
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public void setNode(Node selectedNode) {
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if(!isSupported(selectedNode)) {
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if (!isSupported(selectedNode)) {
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setDataView(null, 0, true);
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return;
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}
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@ -423,21 +443,21 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
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@Override
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public boolean isSupported(Node node) {
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if(node == null) {
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if (node == null) {
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return false;
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}
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FsContent fsContent = node.getLookup().lookup(FsContent.class);
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LayoutFile lc = node.getLookup().lookup(LayoutFile.class);
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if(fsContent != null && fsContent.getSize() != 0)
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return true;
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if(lc != null && lc.getSize() != 0)
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Content content = node.getLookup().lookup(Content.class);
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if (content != null && content.getSize() != 0) {
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return true;
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}
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return false;
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}
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@Override
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public int isPreferred(Node node, boolean isSupported) {
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if(isSupported) {
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if (isSupported) {
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return 1;
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} else {
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return 0;
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@ -450,12 +470,13 @@ public class DataContentViewerHex extends javax.swing.JPanel implements DataCont
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}
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/* Show the right click menu only if evt is the correct mouse event */
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private void maybeShowPopup(java.awt.event.MouseEvent evt){
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if(evt.isPopupTrigger()){
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private void maybeShowPopup(java.awt.event.MouseEvent evt) {
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if (evt.isPopupTrigger()) {
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rightClickMenu.setLocation(evt.getLocationOnScreen());
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rightClickMenu.setVisible(true);
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copyMenuItem.setEnabled(outputViewPane.getSelectedText() != null);
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}else
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} else {
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rightClickMenu.setVisible(false);
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}
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}
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}
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@ -44,38 +44,40 @@ import org.sleuthkit.datamodel.TskException;
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/**
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* Viewer displays strings extracted from contents.
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*/
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@ServiceProvider(service = DataContentViewer.class, position=2)
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@ServiceProvider(service = DataContentViewer.class, position = 2)
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public class DataContentViewerString extends javax.swing.JPanel implements DataContentViewer {
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private static long currentOffset = 0;
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private static final long pageLength = 16384;
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private final byte[] data = new byte[(int)pageLength];
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private final byte[] data = new byte[(int) pageLength];
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private static int currentPage = 1;
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private Content dataSource;
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// for error handling
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private String className = this.getClass().toString();
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//string extract utility
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private final StringExtract stringExtract = new StringExtract();
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/** Creates new form DataContentViewerString */
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/**
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* Creates new form DataContentViewerString
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*/
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public DataContentViewerString() {
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initComponents();
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customizeComponents();
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this.resetComponent();
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}
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private void customizeComponents(){
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private void customizeComponents() {
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outputViewPane.setComponentPopupMenu(rightClickMenu);
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ActionListener actList = new ActionListener(){
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ActionListener actList = new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e){
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public void actionPerformed(ActionEvent e) {
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JMenuItem jmi = (JMenuItem) e.getSource();
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if(jmi.equals(copyMenuItem))
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if (jmi.equals(copyMenuItem)) {
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outputViewPane.copy();
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else if(jmi.equals(selectAllMenuItem))
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} else if (jmi.equals(selectAllMenuItem)) {
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outputViewPane.selectAll();
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}
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}
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};
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copyMenuItem.addActionListener(actList);
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selectAllMenuItem.addActionListener(actList);
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@ -87,10 +89,10 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
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}
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/** This method is called from within the constructor to
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* initialize the form.
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* WARNING: Do NOT modify this code. The content of this method is
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* always regenerated by the Form Editor.
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/**
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* This method is called from within the constructor to initialize the form.
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* WARNING: Do NOT modify this code. The content of this method is always
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* regenerated by the Form Editor.
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*/
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@SuppressWarnings("unchecked")
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// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
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@ -273,7 +275,7 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
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private void goToPageTextFieldActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_goToPageTextFieldActionPerformed
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String pageNumberStr = goToPageTextField.getText();
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int pageNumber;
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int maxPage = Math.round((dataSource.getSize()-1) / pageLength) + 1;
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int maxPage = Math.round((dataSource.getSize() - 1) / pageLength) + 1;
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try {
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pageNumber = Integer.parseInt(pageNumberStr);
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} catch (NumberFormatException ex) {
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@ -284,7 +286,7 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
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"Invalid page number", JOptionPane.WARNING_MESSAGE);
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return;
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}
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currentOffset = (pageNumber-1) * pageLength;
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currentOffset = (pageNumber - 1) * pageLength;
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currentPage = pageNumber;
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currentPageLabel.setText(Integer.toString(currentPage));
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setDataView(dataSource, currentOffset, false);
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@ -296,7 +298,6 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
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setDataView(dataSource, currentOffset, false);
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}
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}//GEN-LAST:event_languageComboActionPerformed
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// Variables declaration - do not modify//GEN-BEGIN:variables
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private javax.swing.JMenuItem copyMenuItem;
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private javax.swing.JLabel currentPageLabel;
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@ -325,21 +326,30 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
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* @param reset whether to reset the dataView or not
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*/
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public void setDataView(Content dataSource, long offset, boolean reset) {
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if (dataSource == null) {
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return;
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}
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// change the cursor to "waiting cursor" for this operation
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this.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
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try {
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try {
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this.dataSource = dataSource;
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int bytesRead = 0;
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if (!reset && dataSource.getSize() > 0) {
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bytesRead = dataSource.read(data, offset, pageLength); // read the data
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}
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// set the data on the bottom and show it
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String text = "";
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Boolean setVisible = false;
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if (!reset && dataSource.getSize() > 0) {
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try {
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bytesRead = dataSource.read(data, offset, pageLength); // read the data
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} catch (TskException ex) {
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text = "(offset " + currentOffset + "-" + (currentOffset + pageLength)
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+ " could not be read)";
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setVisible = true;
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Logger logger = Logger.getLogger(this.className);
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logger.log(Level.WARNING, "Error while trying to show the String content.", ex);
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}
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}
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if (bytesRead > 0) {
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//text = DataConversion.getString(data, bytesRead, 4);
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@ -353,6 +363,10 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
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}
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setVisible = true;
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} else {
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text = "(offset " + currentOffset + "-" + (currentOffset + pageLength)
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+ " could not be read)";
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setVisible = true;
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}
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// disable or enable the next button
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@ -370,7 +384,7 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
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}
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if (setVisible) {
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int totalPage = Math.round((dataSource.getSize()-1) / pageLength) + 1;
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int totalPage = Math.round((dataSource.getSize() - 1) / pageLength) + 1;
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totalPageLabel.setText(Integer.toString(totalPage));
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currentPageLabel.setText(Integer.toString(currentPage));
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outputViewPane.setText(text); // set the output view
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@ -383,13 +397,9 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
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setComponentsVisibility(false); // hides the components that not needed
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}
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outputViewPane.moveCaretPosition(0);
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} catch (TskException ex) {
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Logger logger = Logger.getLogger(this.className);
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logger.log(Level.WARNING, "Error while trying to show the String content.", ex);
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}
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} finally {
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this.setCursor(null);
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}
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}
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/**
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@ -414,26 +424,25 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
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@Override
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public void setNode(Node selectedNode) {
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if(!isSupported(selectedNode)) {
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if (!isSupported(selectedNode)) {
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setDataView(null, 0, true);
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return;
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}
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if (selectedNode != null) {
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Lookup lookup = selectedNode.getLookup();
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Content content = lookup.lookup(Content.class);
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if (content != null) {
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if (content
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!= null) {
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this.setDataView(content, 0, false);
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return;
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}
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else{
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} else {
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StringContent scontent = selectedNode.getLookup().lookup(StringContent.class);
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if(scontent != null){
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if (scontent != null) {
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this.setDataView(scontent);
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return;
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}
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}
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}
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this.setDataView(null, 0, true);
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}
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@ -467,21 +476,25 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
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@Override
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public boolean isSupported(Node node) {
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if(node == null) {
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if (node == null) {
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return false;
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}
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FsContent fsContent = node.getLookup().lookup(FsContent.class);
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LayoutFile lc = node.getLookup().lookup(LayoutFile.class);
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if(fsContent != null && fsContent.getSize() != 0)
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return true;
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if(lc != null && lc.getSize() != 0)
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Content content = node.getLookup().lookup(Content.class);
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if (content
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!= null && content.getSize()
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!= 0) {
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return true;
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}
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return false;
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}
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@Override
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public int isPreferred(Node node, boolean isSupported) {
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if(node != null && isSupported){
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if (node != null && isSupported) {
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return 1;
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} else {
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return 0;
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@ -518,12 +531,13 @@ public class DataContentViewerString extends javax.swing.JPanel implements DataC
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}
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/* Show the right click menu only if evt is the correct mouse event */
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private void maybeShowPopup(java.awt.event.MouseEvent evt){
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if(evt.isPopupTrigger()){
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private void maybeShowPopup(java.awt.event.MouseEvent evt) {
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if (evt.isPopupTrigger()) {
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rightClickMenu.setLocation(evt.getLocationOnScreen());
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rightClickMenu.setVisible(true);
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copyMenuItem.setEnabled(outputViewPane.getSelectedText() != null);
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}else
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} else {
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rightClickMenu.setVisible(false);
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}
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}
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}
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