1 files changed, 371 insertions, 0 deletions
diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/SecureViewerDialog.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/SecureViewerDialog.java
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--- /dev/null
+++ b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/SecureViewerDialog.java
@@ -0,0 +1,371 @@
+/*
+ * Copyright 2008 Federal Chancellery Austria and
+ * Graz University of Technology
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package at.gv.egiz.bku.gui;
+
+import at.gv.egiz.stal.HashDataInput;
+import java.awt.Container;
+import java.awt.Cursor;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.Frame;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.io.BufferedOutputStream;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.nio.charset.Charset;
+import java.text.MessageFormat;
+import java.util.ResourceBundle;
+import javax.swing.GroupLayout;
+import javax.swing.ImageIcon;
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JEditorPane;
+import javax.swing.JFileChooser;
+import javax.swing.JLabel;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.LayoutStyle;
+import javax.swing.SwingUtilities;
+import javax.swing.text.Document;
+import javax.swing.text.EditorKit;
+import javax.swing.text.StyledEditorKit;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ *
+ * @author Clemens Orthacker <clemens.orthacker@iaik.tugraz.at>
+ */
+public class SecureViewerDialog extends JDialog implements ActionListener {
+
+  public static final String PLAINTEXT_FONT = "Monospaced";
+  public static final Dimension VIEWER_DIMENSION = new Dimension(600, 400);
+  protected static final Log log = LogFactory.getLog(SecureViewerDialog.class);
+
+//  private static SecureViewerDialog dialog;
+  protected ResourceBundle messages;
+  protected JEditorPane viewer;
+  protected JLabel viewerLabel;
+  protected JScrollPane scrollPane;
+  protected HashDataInput content; //remember for save dialog
+
+  /**
+   * Create and display a modal SecureViewer dialog.
+   * This method blocks until the dialog's close button is pressed.
+   * 
+   * @param owner, dialog is positioned relative to its owner
+   * (if null, at default location of native windowing system)
+   */
+//  public static void showDataToBeSigned(HashDataInput dataToBeSigned,
+//          ResourceBundle messages,
+//          ActionListener saveListener, String saveCommand,
+//          ActionListener helpListener) {
+//
+////      Frame ownerFrame = (owner != null) ?
+////        JOptionPane.getFrameForComponent(owner) :
+////        null;
+//    dialog = new SecureViewerDialog(null, messages,
+//            saveListener, saveCommand, helpListener);
+//    dialog.setContent(dataToBeSigned);
+//    dialog.setVisible(true);
+//  }
+  public SecureViewerDialog(Frame owner, ResourceBundle messages,
+//          ActionListener saveListener, String saveCommand,
+          ActionListener helpListener) {
+    super(owner, messages.getString(BKUGUIFacade.WINDOWTITLE_VIEWER), true);
+    this.messages = messages;
+
+    initContentPane(VIEWER_DIMENSION,
+            createViewerPanel(helpListener),
+            createButtonPanel()); //saveListener, saveCommand));
+
+    pack();
+    if (owner != null) {
+      setLocationRelativeTo(owner);
+    } else {
+      setLocationByPlatform(true);
+    }
+  }
+
+  private void initContentPane(Dimension preferredSize,
+          JPanel viewerPanel, JPanel buttonPanel) {
+    Container contentPane = getContentPane();
+    contentPane.setPreferredSize(preferredSize);
+
+    GroupLayout mainLayout = new GroupLayout(contentPane);
+    contentPane.setLayout(mainLayout);
+
+    mainLayout.setHorizontalGroup(
+            mainLayout.createSequentialGroup().addContainerGap().addGroup(
+            mainLayout.createParallelGroup(GroupLayout.Alignment.LEADING).addComponent(viewerPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addComponent(buttonPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)).addContainerGap());
+    mainLayout.setVerticalGroup(
+            mainLayout.createSequentialGroup().addContainerGap().addComponent(viewerPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED).addComponent(buttonPanel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addContainerGap());
+  }
+
+  /**
+   * @param helpListener may be null
+   */
+  private JPanel createViewerPanel(final ActionListener helpListener) {
+    viewer = new JEditorPane();
+    viewer.setEditable(false);
+
+    scrollPane = new JScrollPane();
+
+    JPanel viewerPanel = new JPanel();
+    GroupLayout viewerPanelLayout = new GroupLayout(viewerPanel);
+    viewerPanel.setLayout(viewerPanelLayout);
+
+    GroupLayout.SequentialGroup infoHorizontal = viewerPanelLayout.createSequentialGroup();
+    GroupLayout.ParallelGroup infoVertical = viewerPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING);
+
+    viewerLabel = new JLabel();
+    viewerLabel.setFont(viewerLabel.getFont().deriveFont(viewerLabel.getFont().getStyle() | java.awt.Font.BOLD));
+//    viewerLabel.setLabelFor(viewer);
+
+    infoHorizontal.addComponent(viewerLabel);
+    infoVertical.addComponent(viewerLabel);
+
+    if (helpListener != null) {
+      JLabel helpLabel = new JLabel();
+      helpLabel.setIcon(new ImageIcon(getClass().getResource(BKUGUIFacade.HELP_IMG)));
+      helpLabel.getAccessibleContext().setAccessibleName(messages.getString(BKUGUIFacade.ALT_HELP));
+      helpLabel.addMouseListener(new MouseAdapter() {
+
+        @Override
+        public void mouseClicked(MouseEvent arg0) {
+          ActionEvent e = new ActionEvent(this, ActionEvent.ACTION_PERFORMED, BKUGUIFacade.HELP_HASHDATAVIEWER);
+          helpListener.actionPerformed(e);
+        }
+      });
+      helpLabel.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
+
+      infoHorizontal.addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED, 0, Short.MAX_VALUE).addComponent(helpLabel);
+      infoVertical.addComponent(helpLabel);
+    }
+
+    viewerPanelLayout.setHorizontalGroup(
+            viewerPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(infoHorizontal).addComponent(scrollPane));
+    viewerPanelLayout.setVerticalGroup(
+            viewerPanelLayout.createSequentialGroup().addGroup(infoVertical).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(scrollPane));
+
+    return viewerPanel;
+  }
+
+  /**
+   * Sets the hashdataInput to be displayed and makes the dialog visible.
+   * This method blocks until the dialog's close button is pressed.
+   * 
+   * @param mimeType defaults to text/plain if null
+   * @param encoding must be null if document contains charset declaration (e.g. HTML page), otherwise the parser crashes
+
+   * @param hashDataInput
+   */
+  public void setContent(HashDataInput hashDataInput) {
+
+    this.content = null;
+
+    String mimeType = hashDataInput.getMimeType();
+    if (mimeType == null) {
+      mimeType = "text/plain";
+    }
+    log.debug("secure viewer mime type: " + mimeType);
+    // loads editorkit for text/plain if unrecognized
+    viewer.setContentType(mimeType);
+
+    if ("text/plain".equals(mimeType)) {
+      viewer.setEditorKit(new StyledEditorKit());
+      viewer.setFont(new Font(PLAINTEXT_FONT, viewer.getFont().getStyle(), viewer.getFont().getSize()));
+//    } else if ("text/html".equals(mimeType)) {
+//      viewer.setEditorKit(new RestrictedHTMLEditorKit());
+    } else if ("application/xhtml+xml".equals(mimeType)) {
+      viewer.setContentType("text/html");
+    }
+
+    EditorKit editorKit = viewer.getEditorKit();
+    Document document = editorKit.createDefaultDocument();
+//    document.putProperty("IgnoreCharsetDirective", new Boolean(true));
+
+    try {
+      Charset cs = (hashDataInput.getEncoding() == null) ? Charset.forName("UTF-8") : Charset.forName(hashDataInput.getEncoding());
+      log.debug("secure viewer encoding: " + cs.toString());
+
+      InputStreamReader isr = new InputStreamReader(hashDataInput.getHashDataInput(), cs);
+      Reader contentReader = new BufferedReader(isr);
+      viewer.read(contentReader, document);
+      contentReader.close();
+
+      this.content = hashDataInput;
+
+//    } catch (IllegalCharsetNameException ex) {
+//    } catch (UnsupportedCharsetException ex) {
+    } catch (Exception ex) {
+      log.error(ex.getMessage(), ex);
+      String p = messages.getString(BKUGUIFacade.ERR_VIEWER);
+      viewer.setText(MessageFormat.format(p, ex.getMessage()));
+    }
+    viewer.setCaretPosition(0);
+
+    scrollPane.setViewportView(viewer);
+    scrollPane.setPreferredSize(viewer.getPreferredSize());
+    scrollPane.setAlignmentX(LEFT_ALIGNMENT);
+
+    if ("application/xhtml+xml".equals(mimeType)) {
+      viewerLabel.setText(messages.getString(BKUGUIFacade.WARNING_XHTML));
+    } else {
+      viewerLabel.setText("");
+    }
+
+    setVisible(true);
+  }
+
+  private JPanel createButtonPanel() { //ActionListener saveListener, String saveCommand) {
+    JButton closeButton = new JButton();
+    closeButton.setText(messages.getString(BKUGUIFacade.BUTTON_CLOSE));
+    closeButton.setActionCommand("close");
+    closeButton.addActionListener(this);
+    
+    JButton saveButton = new JButton();
+    saveButton.setText(messages.getString(BKUGUIFacade.BUTTON_SAVE));
+    saveButton.setActionCommand("save");
+    saveButton.addActionListener(this);
+
+    int buttonSize = closeButton.getPreferredSize().width;
+    if (saveButton.getPreferredSize().width > buttonSize) {
+      buttonSize = saveButton.getPreferredSize().width;
+    }
+
+    JPanel buttonPanel = new JPanel();
+    GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
+    buttonPanel.setLayout(buttonPanelLayout);
+
+    buttonPanelLayout.setHorizontalGroup(
+            buttonPanelLayout.createSequentialGroup().addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addComponent(saveButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(closeButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
+    buttonPanelLayout.setVerticalGroup(
+            buttonPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE).addComponent(saveButton).addComponent(closeButton));
+
+    return buttonPanel;
+  }
+
+  @Override
+  public void actionPerformed(ActionEvent e) {
+    if ("close".equals(e.getActionCommand())) {
+//    SecureViewerDialog.dialog.setVisible(false);
+      log.trace("closing secure viewer");
+      setVisible(false);
+      log.trace("secure viewer closed");
+    } else if ("save".equals(e.getActionCommand())) {
+      log.trace("display secure viewer save dialog");
+      showSaveDialog(content, null, null);
+      log.trace("done secure viewer save");
+    } else {
+      log.warn("unknown action command " + e.getActionCommand());
+    }
+  }
+
+  private void showSaveDialog(final HashDataInput hashDataInput,
+          final ActionListener okListener, final String okCommand) {
+
+    log.debug("scheduling save dialog [" + Thread.currentThread().getName() + "]");
+
+    SwingUtilities.invokeLater(new Runnable() {
+
+      @Override
+      public void run() {
+
+        log.debug("show save dialog [" + Thread.currentThread().getName() + "]");
+
+        String userHome = System.getProperty("user.home");
+
+        JFileChooser fileDialog = new JFileChooser(userHome);
+        fileDialog.setMultiSelectionEnabled(false);
+        fileDialog.setDialogType(JFileChooser.SAVE_DIALOG);
+        fileDialog.setFileHidingEnabled(true);
+        fileDialog.setDialogTitle(messages.getString(BKUGUIFacade.WINDOWTITLE_SAVE));
+        fileDialog.setFileSelectionMode(JFileChooser.FILES_ONLY);
+        String mimeType = hashDataInput.getMimeType();
+        MimeFilter mimeFilter = new MimeFilter(mimeType, messages);
+        fileDialog.setFileFilter(mimeFilter);
+        String filename = messages.getString(BKUGUIFacade.SAVE_HASHDATAINPUT_PREFIX) +
+                MimeFilter.getExtension(mimeType);
+        fileDialog.setSelectedFile(new File(userHome, filename));
+
+        //parent contentPane -> placed over applet
+        switch (fileDialog.showSaveDialog(fileDialog)) {
+          case JFileChooser.APPROVE_OPTION:
+            File file = fileDialog.getSelectedFile();
+            String id = hashDataInput.getReferenceId();
+            if (file.exists()) {
+              String msgPattern = messages.getString(BKUGUIFacade.MESSAGE_OVERWRITE);
+              int overwrite = JOptionPane.showConfirmDialog(fileDialog,
+                      MessageFormat.format(msgPattern, file),
+                      messages.getString(BKUGUIFacade.WINDOWTITLE_OVERWRITE),
+                      JOptionPane.OK_CANCEL_OPTION);
+              if (overwrite != JOptionPane.OK_OPTION) {
+                return;
+              }
+            }
+            if (log.isDebugEnabled()) {
+              log.debug("writing hashdata input " + id + " (" + mimeType + ") to file " + file);
+            }
+            FileOutputStream fos = null;
+            try {
+              fos = new FileOutputStream(file);
+              BufferedOutputStream bos = new BufferedOutputStream(fos);
+              InputStream hdi = hashDataInput.getHashDataInput();
+              int b;
+              while ((b = hdi.read()) != -1) {
+                bos.write(b);
+              }
+              bos.flush();
+              bos.close();
+            } catch (IOException ex) {
+              log.error("Failed to write " + file + ": " + ex.getMessage());
+              log.debug(ex);
+              String errPattern = messages.getString(BKUGUIFacade.ERR_WRITE_HASHDATA);
+              JOptionPane.showMessageDialog(fileDialog,
+                      MessageFormat.format(errPattern, ex.getMessage()),
+                      messages.getString(BKUGUIFacade.WINDOWTITLE_ERROR),
+                      JOptionPane.ERROR_MESSAGE);
+            } finally {
+              try {
+                if (fos != null) {
+                  fos.close();
+                }
+              } catch (IOException ex) {
+              }
+            }
+            break;
+          case JFileChooser.CANCEL_OPTION:
+            log.debug("cancelled save dialog");
+            break;
+        }
+        if (okListener != null) {
+          okListener.actionPerformed(new ActionEvent(fileDialog, ActionEvent.ACTION_PERFORMED, okCommand));
+        }
+      }
+    });
+  }
+}