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An Open Source JavaFX PDF Viewer
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2016 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* JavaFXSummary.java
* ---------------
*/
package org.jpedal.objects.acroforms.javafx;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.utils.LogWriter;
public class JavaFXSummary extends javafx.scene.layout.Pane{
private final Stage frame;
private final PdfObject sigObject;
private static TextField signedByBox = new TextField();
private static TextField reasonBox = new TextField();
private static TextField dateBox = new TextField();
private static TextField locationBox = new TextField();
public void setValues(final String signName, final String reason, final String location){
signedByBox.setText(signName);
reasonBox.setText(reason);
final String rawDate = sigObject.getTextStreamValue(PdfDictionary.M);
final StringBuilder date = new StringBuilder(rawDate);
date.delete(0, 2);
date.insert(4, '/');
date.insert(7, '/');
date.insert(10, ' ');
date.insert(13, ':');
date.insert(16, ':');
date.insert(19, ' ');
dateBox.setText(date.toString());
locationBox.setText(location);
}
/**
* Creates new form Signatures
*
* @param sig
*/
public JavaFXSummary(final Stage stage, final PdfObject sig) {
this.frame = stage;
this.sigObject = sig;
initComponents();
}
/**
* 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.
*/
//
private void initComponents() {
final Label locationLbl = new Label();
final Label signedByLbl = new Label();
final Label reasonLbl = new Label();
final Label dateLbl = new Label();
final Button showCertificateButton = new Button();
final Button closeButton = new Button();
locationBox = new TextField();
signedByBox = new TextField();
reasonBox = new TextField();
dateBox = new TextField();
locationLbl.setText("Location: ");
signedByLbl.setText("Signed by: ");
reasonLbl.setText("Reason: ");
dateLbl.setText("Date: ");
closeButton.setText("Close");
showCertificateButton.setText("Show Certificate...");
locationBox.setEditable(false);
reasonBox.setEditable(false);
dateBox.setEditable(false);
signedByBox.setEditable(false);
reasonBox.setPrefWidth(400);
final byte[] bytes = sigObject.getTextStreamValueAsByte(PdfDictionary.Cert);
if (bytes == null) {
showCertificateButton.setDisable(true);
} else {
showCertificateButton.setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent t) {
showCertificate();
}
});
}
closeButton.setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent t) {
frame.close();
}
});
final VBox left = new VBox(20);
left.getChildren().addAll(signedByLbl, reasonLbl, dateLbl, locationLbl);
final VBox middle = new VBox(8);
middle.getChildren().addAll(signedByBox, reasonBox, dateBox, locationBox);
middle.setPadding(new Insets(3, 0, 3, 0));
final HBox location = new HBox();
location.getChildren().addAll(locationLbl, locationBox);
locationBox.setAlignment(Pos.BOTTOM_CENTER);
location.setAlignment(Pos.BOTTOM_CENTER);
location.setPadding(new Insets(0, 0, 3, 0));
final StackPane right = new StackPane();
right.getChildren().addAll(showCertificateButton, closeButton);
StackPane.setAlignment(closeButton, Pos.BOTTOM_RIGHT);
StackPane.setAlignment(showCertificateButton, Pos.TOP_RIGHT);
final HBox box = new HBox(3);
box.getChildren().addAll(left, middle, location, right);
this.getChildren().add(box);
}
private void showCertificate(){
final Stage certificateStage = new Stage();
final CertificateHolderFX ch = new CertificateHolderFX(certificateStage);
try {
final byte[] bytes = sigObject.getTextStreamValueAsByte(PdfDictionary.Cert);
final InputStream bais = new ByteArrayInputStream(bytes);
final CertificateFactory cf = CertificateFactory.getInstance("X.509");
final X509Certificate signingCertificate = (X509Certificate) cf.generateCertificate(bais);
bais.close();
final DateFormat format1 = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss z");
final Date notBefore = signingCertificate.getNotBefore();
final Date notAfter = signingCertificate.getNotAfter();
final String publicKey = byteToHex(signingCertificate.getPublicKey().getEncoded());
final String x509Data = byteToHex(signingCertificate.getEncoded());
final String sha1Digest = byteToHex(getDigest(bytes, "SHA1"));
final String md5Digest = byteToHex(getDigest(bytes, "MD5"));
String keyDescription = signingCertificate.getPublicKey().toString();
final int keyDescriptionEnd = keyDescription.indexOf('\n');
if (keyDescriptionEnd != -1) {
keyDescription = keyDescription.substring(0, keyDescriptionEnd);
}
ch.setValues(sigObject.getTextStreamValue(PdfDictionary.Name), signingCertificate.getVersion(), signingCertificate.getSigAlgName(),
signingCertificate.getSubjectX500Principal().toString(),
signingCertificate.getIssuerX500Principal().toString(),
signingCertificate.getSerialNumber(),
format1.format(notBefore),
format1.format(notAfter),
keyDescription, publicKey, x509Data, sha1Digest, md5Digest);
}catch(final Exception e){
LogWriter.writeLog("Exception: " + e.getMessage());
}
}
/**
* @param bytes
* @return
* @throws NoSuchAlgorithmException
*/
private static byte[] getDigest(final byte[] bytes, final String algorithm) throws NoSuchAlgorithmException {
final MessageDigest sha1 = MessageDigest.getInstance(algorithm);
sha1.update(bytes);
return sha1.digest();
}
/**
* @return
*/
private static String byteToHex(final byte[] bytes) {
StringBuilder hex = new StringBuilder();
for (final byte aByte : bytes) {
String singleByte = Integer.toHexString(aByte);
if (singleByte.startsWith("ffffff")) {
singleByte = singleByte.substring(6, singleByte.length());
} else if (singleByte.length() == 1) {
singleByte = '0' + singleByte;
}
singleByte = singleByte.toUpperCase();
hex.append(singleByte).append(' ');
}
return hex.toString();
}
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