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/* Copyright (C) 2011 [Gobierno de Espana]
* This file is part of "Cliente @Firma".
* "Cliente @Firma" is free software; you can redistribute it and/or modify it under the terms of:
* - the GNU General Public License as published by the Free Software Foundation;
* either version 2 of the License, or (at your option) any later version.
* - or The European Software License; either version 1.1 or (at your option) any later version.
* You may contact the copyright holder at: [email protected]
*/
package es.gob.afirma.standalone.ui.hash;
import java.awt.Container;
import java.awt.Cursor;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.NoSuchAlgorithmException;
import java.util.logging.Logger;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingWorker;
import es.gob.afirma.core.AOCancelledOperationException;
import es.gob.afirma.core.misc.AOUtil;
import es.gob.afirma.core.misc.Base64;
import es.gob.afirma.core.misc.Platform;
import es.gob.afirma.core.ui.AOUIFactory;
import es.gob.afirma.standalone.AutoFirmaUtil;
import es.gob.afirma.standalone.SimpleAfirmaMessages;
import es.gob.afirma.standalone.ui.CommonWaitDialog;
/** Diálogo para la comprobación de huellas digitales. */
public final class CheckHashDialog extends JDialog implements KeyListener {
private static final long serialVersionUID = 2431770911918905439L;
private static final int SIZE_WAIT = 50000000; //Tamano en bytes
private final JTextField textFieldHash = new JTextField();
void setTextFieldHashText(final String text) {
this.textFieldHash.setText(text);
}
String getTextFieldHashText() {
return this.textFieldHash.getText();
}
private final JTextField textFieldData = new JTextField();
void setTextFieldDataText(final String text) {
this.textFieldData.setText(text);
}
String getTextFieldDataText() {
return this.textFieldData.getText();
}
private CheckHashDialog(final Frame parent) {
super(parent);
setModalityType(ModalityType.APPLICATION_MODAL);
createUI(parent);
}
void createUI(final Frame parent) {
final Container c = getContentPane();
final GridBagLayout gbl = new GridBagLayout();
c.setLayout(gbl);
final GridBagConstraints gbc = new GridBagConstraints();
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1.0;
gbc.gridy = 0;
gbc.insets = new Insets(5,15,0,10);
setIconImage(
AutoFirmaUtil.getDefaultDialogsIcon()
);
setTitle(SimpleAfirmaMessages.getString("CheckHashDialog.0")); //$NON-NLS-1$
final JButton checkButton = new JButton(SimpleAfirmaMessages.getString("CheckHashDialog.1")); //$NON-NLS-1$
checkButton.addKeyListener(this);
checkButton.setMnemonic('C');
checkButton.setEnabled(false);
checkButton.addActionListener(
new ActionListener() {
@Override
public void actionPerformed(final ActionEvent e) {
CheckHashDialog.this.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
try {
if (checkHash(getTextFieldHashText(), getTextFieldDataText())) {
AOUIFactory.showMessageDialog(
CheckHashDialog.this,
SimpleAfirmaMessages.getString("CheckHashDialog.2"), //$NON-NLS-1$
SimpleAfirmaMessages.getString("CheckHashDialog.3"), //$NON-NLS-1$
JOptionPane.INFORMATION_MESSAGE
);
}
else {
AOUIFactory.showMessageDialog(
CheckHashDialog.this,
SimpleAfirmaMessages.getString("CheckHashDialog.4"), //$NON-NLS-1$
SimpleAfirmaMessages.getString("CheckHashDialog.5"), //$NON-NLS-1$
JOptionPane.WARNING_MESSAGE
);
}
}
catch(final OutOfMemoryError ooe) {
AOUIFactory.showErrorMessage(
parent,
SimpleAfirmaMessages.getString("CreateHashDialog.18"), //$NON-NLS-1$
SimpleAfirmaMessages.getString("CreateHashDialog.14"), //$NON-NLS-1$
JOptionPane.ERROR_MESSAGE
);
Logger.getLogger("es.gob.afirma").severe( //$NON-NLS-1$
"Fichero demasiado grande: " + ooe //$NON-NLS-1$
);
return;
}
catch(final Exception ex) {
Logger.getLogger("es.gob.afirma").severe( //$NON-NLS-1$
"No ha sido posible comprobar las huellas digitales: " + ex //$NON-NLS-1$
);
AOUIFactory.showErrorMessage(
CheckHashDialog.this,
SimpleAfirmaMessages.getString("CheckHashDialog.6"), //$NON-NLS-1$
SimpleAfirmaMessages.getString("CheckHashDialog.7"), //$NON-NLS-1$
JOptionPane.ERROR_MESSAGE
);
}
finally {
CheckHashDialog.this.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
}
}
}
);
this.textFieldHash.addKeyListener(this);
this.textFieldHash.setEditable(false);
this.textFieldHash.setFocusable(false);
this.textFieldHash.setColumns(10);
final JLabel textFieldHashLabel = new JLabel(SimpleAfirmaMessages.getString("CheckHashDialog.8")); //$NON-NLS-1$
textFieldHashLabel.setLabelFor(this.textFieldHash);
textFieldHashLabel.addKeyListener(this);
final JButton textFieldHashButton = new JButton(SimpleAfirmaMessages.getString("CheckHashDialog.9")); //$NON-NLS-1$
textFieldHashButton.addKeyListener(this);
textFieldHashButton.setMnemonic('x');
textFieldHashButton.addActionListener(
new ActionListener() {
@Override
public void actionPerformed(final ActionEvent ae) {
try {
setTextFieldHashText(
AOUIFactory.getLoadFiles(
SimpleAfirmaMessages.getString("CheckHashDialog.10"), //$NON-NLS-1$
null,
null,
new String[] { "hash", "hashb64", "hexhash" }, //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
SimpleAfirmaMessages.getString("CheckHashDialog.14"), //$NON-NLS-1$
false,
false,
AutoFirmaUtil.getDefaultDialogsIcon(),
CheckHashDialog.this
)[0].getAbsolutePath()
);
final String dataFile = getTextFieldDataText();
if (!(dataFile == null) && !dataFile.isEmpty()) {
checkButton.setEnabled(true);
}
}
catch(final AOCancelledOperationException ex) {
// Operacion cancelada por el usuario
}
}
}
);
this.textFieldData.addKeyListener(this);
this.textFieldData.setEditable(false);
this.textFieldData.setFocusable(false);
this.textFieldData.setColumns(10);
final JLabel textFieldDataLabel = new JLabel(SimpleAfirmaMessages.getString("CheckHashDialog.11")); //$NON-NLS-1$
textFieldDataLabel.setLabelFor(this.textFieldData);
textFieldDataLabel.addKeyListener(this);
final JButton textFieldDataButton = new JButton(SimpleAfirmaMessages.getString("CheckHashDialog.12")); //$NON-NLS-1$
textFieldDataButton.addKeyListener(this);
textFieldDataButton.setMnemonic('E');
textFieldDataButton.addActionListener(
new ActionListener() {
@Override
public void actionPerformed(final ActionEvent ae) {
try {
setTextFieldDataText(
AOUIFactory.getLoadFiles(
SimpleAfirmaMessages.getString("CheckHashDialog.13"), //$NON-NLS-1$
null,
null,
null,
SimpleAfirmaMessages.getString("CheckHashDialog.14"), //$NON-NLS-1$
false,
false,
AutoFirmaUtil.getDefaultDialogsIcon(),
CheckHashDialog.this
)[0].getAbsolutePath()
);
final String hashFile = getTextFieldHashText();
if (!(hashFile == null) && !hashFile.isEmpty()) {
checkButton.setEnabled(true);
}
}
catch(final AOCancelledOperationException ex) {
// Operacion cancelada por el usuario
}
}
}
);
final JButton exitButton = new JButton(
SimpleAfirmaMessages.getString("CheckHashDialog.15") //$NON-NLS-1$
);
exitButton.setMnemonic('C');
exitButton.addActionListener(
new ActionListener () {
@Override
public void actionPerformed( final ActionEvent e ) {
CheckHashDialog.this.setVisible(false);
CheckHashDialog.this.dispose();
}
}
);
exitButton.getAccessibleContext().setAccessibleDescription(
SimpleAfirmaMessages.getString("CheckHashDialog.16") //$NON-NLS-1$
);
exitButton.addKeyListener(this);
final JPanel panel = new JPanel();
panel.setLayout(new FlowLayout(FlowLayout.RIGHT));
// En Mac OS X el orden de los botones es distinto
if (Platform.OS.MACOSX.equals(Platform.getOS())) {
panel.add(exitButton);
panel.add(checkButton);
}
else {
panel.add(checkButton);
panel.add(exitButton);
}
c.add(textFieldDataLabel, gbc);
gbc.gridy++;
gbc.insets = new Insets(5,10,0,10);
c.add(this.textFieldData, gbc);
gbc.weightx = 0;
c.add(textFieldDataButton, gbc);
gbc.insets = new Insets(30,15,0,10);
gbc.weightx = 1.0;
gbc.gridy++;
c.add(textFieldHashLabel, gbc);
gbc.insets = new Insets(5,10,0,10);
gbc.gridy++;
c.add(this.textFieldHash, gbc);
gbc.weightx = 0;
c.add(textFieldHashButton, gbc);
gbc.gridy++;
gbc.insets = new Insets(30,10,0,10);
gbc.gridwidth = GridBagConstraints.REMAINDER;
c.add(panel, gbc);
}
static boolean checkHash(final String fileNameHash, final String fileNameData) {
if (fileNameHash == null || fileNameHash.isEmpty() || fileNameData == null || fileNameData.isEmpty()) {
throw new IllegalArgumentException();
}
// Se crea la ventana de espera.
final CommonWaitDialog dialog = new CommonWaitDialog(
null,
SimpleAfirmaMessages.getString("CreateHashFiles.21"), //$NON-NLS-1$
SimpleAfirmaMessages.getString("CreateHashFiles.22") //$NON-NLS-1$
);
// Arrancamos el proceso en un hilo aparte
final SwingWorker worker = new SwingWorker() {
@Override
protected Boolean doInBackground() throws Exception {
byte[] hashBytes;
try (InputStream fis = new FileInputStream(fileNameHash)) {
hashBytes = AOUtil.getDataFromInputStream(fis);
}
if (Base64.isBase64(hashBytes)) {
hashBytes = Base64.decode(hashBytes, 0, hashBytes.length, false);
}
else if(isHexa(hashBytes)) {
hashBytes = hexStringToByteArray(
new String(hashBytes).substring(0, hashBytes.length -1)
);
}
try {
return Boolean.valueOf(
arrayEquals(
hashBytes,
HashUtil.getFileHash(
getHashAlgorithm(hashBytes),
fileNameData
)
)
);
}
catch (final NoSuchAlgorithmException e) {
throw new IOException(e);
}
}
@Override
protected void done() {
super.done();
dialog.dispose();
}
};
worker.execute();
if (new File(fileNameData).length() > SIZE_WAIT) {
// Se muestra la ventana de espera
dialog.setVisible(true);
}
try {
return worker.get().booleanValue();
}
catch (final Exception e) {
Logger.getLogger("es.gob.afirma").severe( //$NON-NLS-1$
"Error en el proceso en segundo plano de comparacion de huellas: " + e //$NON-NLS-1$
);
return false;
}
}
static String getHashAlgorithm(final byte[] hash) {
if (hash == null || hash.length < 1) {
throw new IllegalArgumentException("La huella no puede ser nula ni vacia"); //$NON-NLS-1$
}
if (hash.length == 20) {
return "SHA-1"; //$NON-NLS-1$
}
return "SHA-" + Integer.toString(hash.length*8); //$NON-NLS-1$
}
/** Comprueba si dos arrays de octetos son iguales.
* @param v Primer array de octetos
* @param w Segundo array de octetos
* @return true si los arrays son iguales, false en caso contrario */
static boolean arrayEquals(final byte[] v, final byte[] w) {
return arrayEquals(v, 0, v.length, w, 0, w.length);
}
/** Comprueba si dos arrays de octetos son iguales.
* @param v Primer array de octetos
* @param vOffset Desplazamiento (offset) de inicio para el primer array
* @param vLen Longitud de los datos en el primer array
* @param w Segundo array de octetos
* @param wOffset Desplazamiento (offset) de inicio para el segundo array
* @param wLen Longitud de los datos en el segundo array
* @return true si los arrays son iguales en longitudes y valores comparados desde
* los respectivos desplazamientos, false en caso contrario */
private static boolean arrayEquals(final byte[] v, final int vOffset, final int vLen, final byte[] w, final int wOffset, final int wLen) {
if (vLen != wLen || v.length < vOffset + vLen || w.length < wOffset + wLen) {
return false;
}
for (int i = 0; i < vLen; i++) {
if (v[i + vOffset] != w[i + wOffset]) {
return false;
}
}
return true;
}
@Override
public void keyTyped(final KeyEvent e) { /* Vacio */ }
@Override
public void keyPressed(final KeyEvent e) { /* Vacio */ }
@Override
public void keyReleased(final KeyEvent ke) {
// En Mac no cerramos los dialogos con Escape
if (ke != null && ke.getKeyCode() == KeyEvent.VK_ESCAPE && !Platform.OS.MACOSX.equals(Platform.getOS())) {
CheckHashDialog.this.setVisible(false);
CheckHashDialog.this.dispose();
}
}
/** Inicia el proceso de comprobación de huella digital.
* @param parent Componente padre para la modalidad. */
public static void launch(final Frame parent) {
final CheckHashDialog chkd = new CheckHashDialog(parent);
chkd.setSize(600, 250);
chkd.setResizable(false);
chkd.setLocationRelativeTo(parent);
chkd.setVisible(true);
}
static byte[] hexStringToByteArray(final String s) {
final int len = s.length();
final byte[] data = new byte[len / 2];
for (int i = 0; i < len; i += 2) {
data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s.charAt(i+1), 16));
}
return data;
}
static boolean isHexa(final byte[] data) {
if (data == null || data.length == 0) {
return false;
}
final String strData = new String(data);
return strData.endsWith("h") && //$NON-NLS-1$
strData.substring(0, strData.length() - 1).matches("^[0-9a-fA-F]+$") && //$NON-NLS-1$
(data.length - 1) % 2 == 0;
}
}
