Java tutorial
/* * Copyright 2006-2017 ICEsoft Technologies Canada Corp. * * 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 org.icepdf.ri.common.views.annotations.signatures; import org.bouncycastle.asn1.ASN1ObjectIdentifier; import org.bouncycastle.asn1.x500.X500Name; import org.bouncycastle.asn1.x500.style.BCStyle; import org.icepdf.core.util.HexDumper; import org.icepdf.ri.common.EscapeJDialog; import org.icepdf.ri.common.utility.signatures.SignatureUtilities; import org.icepdf.ri.images.Images; import javax.swing.*; import javax.swing.event.ListSelectionEvent; import javax.swing.event.ListSelectionListener; import javax.swing.event.TreeSelectionEvent; import javax.swing.event.TreeSelectionListener; import javax.swing.table.DefaultTableModel; import javax.swing.tree.DefaultMutableTreeNode; import javax.swing.tree.DefaultTreeCellRenderer; import javax.swing.tree.TreeSelectionModel; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.security.MessageDigest; import java.security.cert.Certificate; import java.security.cert.X509Certificate; import java.text.MessageFormat; import java.util.Collection; import java.util.ResourceBundle; /** * CertificatePropertiesDialog takes a certificate chain and displays each certificate in a summery view. Certificates * can be easily viewed and selected via a jTree component hierarchy. */ public class CertificatePropertiesDialog extends EscapeJDialog { protected static ResourceBundle messageBundle; private Collection<Certificate> certs; public CertificatePropertiesDialog(Frame parent, ResourceBundle messageBundle, Collection<Certificate> certs) { super(parent, true); CertificatePropertiesDialog.messageBundle = messageBundle; this.certs = certs; buildUI(); } public CertificatePropertiesDialog(JDialog parent, ResourceBundle messageBundle, Collection<Certificate> certs) { super(parent, true); CertificatePropertiesDialog.messageBundle = messageBundle; this.certs = certs; buildUI(); } private void buildUI() { setTitle(messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.title")); getContentPane().setLayout(new BorderLayout()); Certificate[] certArray = new Certificate[certs.size()]; int i = 0; for (Certificate certificate : certs) { certArray[i] = certificate; i++; } getContentPane().add(getComponents(certArray), BorderLayout.CENTER); JPanel buttonPanel = new JPanel(); buttonPanel.setLayout(new FlowLayout(FlowLayout.TRAILING)); JButton closeButton = new JButton( messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.closeButton.label")); closeButton.setMnemonic("viewer.utilityPane.signatures.cert.dialog.closeButton.mnemonic".charAt(0)); closeButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { setVisible(false); } }); buttonPanel.add(closeButton); getContentPane().add(buttonPanel, BorderLayout.SOUTH); setSize(new Dimension(760, 450)); setLocationRelativeTo(getParent()); setResizable(true); } /** * builds out the dialog components, mainly the tree and info panel. */ private JComponent getComponents(Certificate[] certificateChain) { if (certificateChain.length > 0) { final JTable certificateInfoTable = new JTable(); final JTextArea propteryValueTextAea = new JTextArea(); // Build certificate chain into a tree hierarchy. final JTree certChainTree = buildCertChainTree(certificateChain); certChainTree.addTreeSelectionListener(new TreeSelectionListener() { public void valueChanged(TreeSelectionEvent e) { DefaultMutableTreeNode node = (DefaultMutableTreeNode) certChainTree .getLastSelectedPathComponent(); if (node != null) { CertificateInfo certInfo = (CertificateInfo) node.getUserObject(); // Show certificate in the cert info panel showCertificateInfo(certInfo.getCertificate(), certificateInfoTable, propteryValueTextAea); } } }); // Build certificate info table showCertificateInfo((X509Certificate) certificateChain[0], certificateInfoTable, propteryValueTextAea); certificateInfoTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); ListSelectionModel selectionModel = certificateInfoTable.getSelectionModel(); selectionModel.addListSelectionListener(new ListSelectionListener() { public void valueChanged(ListSelectionEvent e) { int row = certificateInfoTable.getSelectedRow(); if (row >= 0) { String value = (String) certificateInfoTable.getValueAt(row, 1); // Update text area when selection changes propteryValueTextAea.setText(value); propteryValueTextAea.repaint(); } } }); // main properties view. propteryValueTextAea.setLineWrap(false); propteryValueTextAea.setEditable(false); propteryValueTextAea.setRows(10); propteryValueTextAea.setColumns(40); // Get font from ResourceManager, and create new font Font fixedWidthFont = new java.awt.Font("Monospaced", java.awt.Font.PLAIN, 12); propteryValueTextAea.setFont(fixedWidthFont); // Select last row by default certificateInfoTable.setRowSelectionInterval(8, 8); // Create cert info panel JScrollPane scrollPane = new JScrollPane(certificateInfoTable); JSplitPane panelInfo = new JSplitPane(JSplitPane.VERTICAL_SPLIT); panelInfo.setDividerLocation(175); panelInfo.setTopComponent(scrollPane); panelInfo.setBottomComponent(new JScrollPane(propteryValueTextAea)); JSplitPane panel = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT); panel.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5), scrollPane.getBorder())); panel.setDividerLocation(200); scrollPane = new JScrollPane(certChainTree); panel.setLeftComponent(scrollPane); panel.setRightComponent(panelInfo); return panel; } return new JPanel(); } /** * Break down DN string into an array used for message format. * Organization: {0}\n Organization Unit :{1}\n Common Name: {2}\n Local: {3}\n State: {4}\n Country:{5}\n Email: {6} */ private Object[] formatDNString(X500Name rdName) { Object[] output = new Object[7]; output[0] = parseRelativeDistinguishedName(rdName, BCStyle.O); output[1] = parseRelativeDistinguishedName(rdName, BCStyle.OU); output[2] = parseRelativeDistinguishedName(rdName, BCStyle.CN); output[3] = parseRelativeDistinguishedName(rdName, BCStyle.L); output[4] = parseRelativeDistinguishedName(rdName, BCStyle.ST); output[5] = parseRelativeDistinguishedName(rdName, BCStyle.C); output[6] = parseRelativeDistinguishedName(rdName, BCStyle.EmailAddress); return output; } protected static String parseRelativeDistinguishedName(X500Name rdName, ASN1ObjectIdentifier commonCode) { String rdn = SignatureUtilities.parseRelativeDistinguishedName(rdName, commonCode); if (rdn != null) { return rdn; } return messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.notAvailable.label"); } /** * Method to reflect certificate chain in the tree view */ private JTree buildCertChainTree(Certificate cert[]) { DefaultMutableTreeNode root = null; DefaultMutableTreeNode currentNode = null; for (Certificate aCert : cert) { DefaultMutableTreeNode childNode = new DefaultMutableTreeNode( new CertificateInfo((X509Certificate) aCert, messageBundle)); if (root == null) { root = childNode; currentNode = childNode; } else { currentNode.add(childNode); currentNode = childNode; } } JTree tree = new JTree(root); // Disable HTML to disable anchor click out. DefaultTreeCellRenderer customCellRenderer = new DefaultTreeCellRenderer(); customCellRenderer.putClientProperty("html.disable", Boolean.TRUE); customCellRenderer.setOpenIcon(new ImageIcon(Images.get("page.gif"))); customCellRenderer.setClosedIcon(new ImageIcon(Images.get("page.gif"))); customCellRenderer.setLeafIcon(new ImageIcon(Images.get("page.gif"))); tree.setCellRenderer(customCellRenderer); // Allow single node selection only tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION); tree.setRootVisible(true); tree.setShowsRootHandles(true); tree.setScrollsOnExpand(true); return tree; } /** * Converts a byte to hex digit and writes to the supplied buffer */ private void byte2hex(byte b, StringBuffer buf) { char[] hexChars = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; int high = ((b & 0xf0) >> 4); int low = (b & 0x0f); buf.append(hexChars[high]); buf.append(hexChars[low]); } /** * Converts a byte array to hex string */ private String toHexString(byte[] block) { StringBuffer buf = new StringBuffer(); int len = block.length; for (int i = 0; i < len; i++) { byte2hex(block[i], buf); if (i < len - 1) { buf.append(":"); } } return buf.toString(); } /** * Gets the requested finger print of the certificate. */ private String getCertFingerPrint(String mdAlg, X509Certificate cert) throws Exception { byte[] encCertInfo = cert.getEncoded(); MessageDigest md = MessageDigest.getInstance(mdAlg); byte[] digest = md.digest(encCertInfo); return toHexString(digest); } /** * Method to reflect table data based on the certificate */ private void showCertificateInfo(X509Certificate cert, JTable certInfoTable, JTextArea textArea) { MessageFormat formatter = new MessageFormat( messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.version.value")); String certVersion = formatter.format(new Object[] { String.valueOf(cert.getVersion()) }); formatter.applyPattern( messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.serialNumber.value")); String serialNumber = formatter.format(new Object[] { String.valueOf(cert.getSerialNumber()) }); formatter.applyPattern( messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.signatureAlgorithm.value")); String signatureAlgorithm = formatter.format(new Object[] { cert.getSigAlgName() }); formatter.applyPattern( messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.issuer.value")); String issuer = formatter.format(formatDNString(new X500Name(cert.getIssuerDN().toString()))); formatter.applyPattern( messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.validity.value")); String validity = formatter.format(new Object[] { cert.getNotBefore(), cert.getNotAfter() }); formatter.applyPattern( messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.subject.value")); String subject = formatter.format(formatDNString(new X500Name(cert.getSubjectDN().toString()))); String signature = new HexDumper().dump(cert.getSignature()); String md5 = null; String sha1 = null; try { formatter.applyPattern( messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.md5.value")); md5 = formatter.format(new Object[] { getCertFingerPrint("MD5", cert) }); formatter.applyPattern( messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.sha1.value")); sha1 = formatter.format(new Object[] { getCertFingerPrint("SHA1", cert) }); } catch (Throwable e) { // eat any errors. } Object[][] data = { { messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.version.label"), certVersion }, { messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.serialNumber.label"), serialNumber }, { messageBundle .getString("viewer.utilityPane.signatures.cert.dialog.info.signatureAlgorithm.label"), signatureAlgorithm }, { messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.issuer.label"), issuer }, { messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.validity.label"), validity }, { messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.subject.label"), subject }, { messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.signature.label"), signature }, { messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.md5.label"), md5 }, { messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.sha1.label"), sha1 } }; String[] columnNames = { messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.column1.label"), messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.column2.label") }; certInfoTable.setModel(new DefaultTableModel(data, columnNames) { public boolean isCellEditable(int row, int col) { return false; } }); // Select last row by default certInfoTable.setRowSelectionInterval(8, 8); certInfoTable.repaint(); textArea.repaint(); } } class CertificateInfo { private X509Certificate cert; private ResourceBundle messageBundle; CertificateInfo(X509Certificate cert, ResourceBundle messageBundle) { this.cert = cert; this.messageBundle = messageBundle; } public X509Certificate getCertificate() { return cert; } /** * Extrace CN from DN in the certificate. * * @param cert X509 certificate * @return CN */ private String extractAliasName(X509Certificate cert) { String subjectName = messageBundle .getString("viewer.utilityPane.signatures.cert.dialog.info.unknownSubject.label"); String issuerName = messageBundle .getString("viewer.utilityPane.signatures.cert.dialog.info.unknownIssuer.label"); // Extract CN from the DN for each certificate try { X500Name principal = new X500Name(cert.getSubjectDN().toString()); X500Name principalIssuer = new X500Name(cert.getIssuerDN().toString()); // Extract subject name subjectName = CertificatePropertiesDialog.parseRelativeDistinguishedName(principal, BCStyle.CN); if (subjectName == null) { subjectName = CertificatePropertiesDialog.parseRelativeDistinguishedName(principal, BCStyle.O); } if (subjectName == null) { subjectName = messageBundle .getString("viewer.utilityPane.signatures.cert.dialog.info.unknownSubject.label"); } // Extract issuer name issuerName = CertificatePropertiesDialog.parseRelativeDistinguishedName(principalIssuer, BCStyle.CN); if (issuerName == null) { issuerName = CertificatePropertiesDialog.parseRelativeDistinguishedName(principalIssuer, BCStyle.O); } if (issuerName == null) { issuerName = messageBundle .getString("viewer.utilityPane.signatures.cert.dialog.info.unknownIssuer.label"); } } catch (Exception e) { e.printStackTrace(); } // Add Subject name and Issuer name in the return string MessageFormat messageFormat = new MessageFormat( messageBundle.getString("viewer.utilityPane.signatures.cert.dialog.info.certificateInfo.label")); Object[] args = { subjectName, issuerName }; return messageFormat.format(args); } public String toString() { return extractAliasName(cert); } }