| /* |
| * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.x509; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.math.BigInteger; |
| import java.util.Enumeration; |
| |
| import sun.security.util.*; |
| |
| /** |
| * Represent the CRL Number Extension. |
| * |
| * <p>This extension, if present, conveys a monotonically increasing |
| * sequence number for each CRL issued by a given CA through a specific |
| * CA X.500 Directory entry or CRL distribution point. This extension |
| * allows users to easily determine when a particular CRL supersedes |
| * another CRL. |
| * |
| * @author Hemma Prafullchandra |
| * @see Extension |
| * @see CertAttrSet |
| */ |
| public class CRLNumberExtension extends Extension |
| implements CertAttrSet<String> { |
| |
| /** |
| * Attribute name. |
| */ |
| public static final String NAME = "CRLNumber"; |
| public static final String NUMBER = "value"; |
| |
| private static final String LABEL = "CRL Number"; |
| |
| private BigInteger crlNumber = null; |
| private String extensionName; |
| private String extensionLabel; |
| |
| // Encode this extension value |
| private void encodeThis() throws IOException { |
| if (crlNumber == null) { |
| this.extensionValue = null; |
| return; |
| } |
| DerOutputStream os = new DerOutputStream(); |
| os.putInteger(this.crlNumber); |
| this.extensionValue = os.toByteArray(); |
| } |
| |
| /** |
| * Create a CRLNumberExtension with the integer value . |
| * The criticality is set to false. |
| * |
| * @param crlNum the value to be set for the extension. |
| */ |
| public CRLNumberExtension(int crlNum) throws IOException { |
| this(PKIXExtensions.CRLNumber_Id, false, BigInteger.valueOf(crlNum), |
| NAME, LABEL); |
| } |
| |
| /** |
| * Create a CRLNumberExtension with the BigInteger value . |
| * The criticality is set to false. |
| * |
| * @param crlNum the value to be set for the extension. |
| */ |
| public CRLNumberExtension(BigInteger crlNum) throws IOException { |
| this(PKIXExtensions.CRLNumber_Id, false, crlNum, NAME, LABEL); |
| } |
| |
| /** |
| * Creates the extension (also called by the subclass). |
| */ |
| protected CRLNumberExtension(ObjectIdentifier extensionId, |
| boolean isCritical, BigInteger crlNum, String extensionName, |
| String extensionLabel) throws IOException { |
| |
| this.extensionId = extensionId; |
| this.critical = isCritical; |
| this.crlNumber = crlNum; |
| this.extensionName = extensionName; |
| this.extensionLabel = extensionLabel; |
| encodeThis(); |
| } |
| |
| /** |
| * Create the extension from the passed DER encoded value of the same. |
| * |
| * @param critical true if the extension is to be treated as critical. |
| * @param value an array of DER encoded bytes of the actual value. |
| * @exception ClassCastException if value is not an array of bytes |
| * @exception IOException on error. |
| */ |
| public CRLNumberExtension(Boolean critical, Object value) |
| throws IOException { |
| this(PKIXExtensions.CRLNumber_Id, critical, value, NAME, LABEL); |
| } |
| |
| /** |
| * Creates the extension (also called by the subclass). |
| */ |
| protected CRLNumberExtension(ObjectIdentifier extensionId, |
| Boolean critical, Object value, String extensionName, |
| String extensionLabel) throws IOException { |
| |
| this.extensionId = extensionId; |
| this.critical = critical.booleanValue(); |
| this.extensionValue = (byte[]) value; |
| DerValue val = new DerValue(this.extensionValue); |
| this.crlNumber = val.getBigInteger(); |
| this.extensionName = extensionName; |
| this.extensionLabel = extensionLabel; |
| } |
| |
| /** |
| * Set the attribute value. |
| */ |
| public void set(String name, Object obj) throws IOException { |
| if (name.equalsIgnoreCase(NUMBER)) { |
| if (!(obj instanceof BigInteger)) { |
| throw new IOException("Attribute must be of type BigInteger."); |
| } |
| crlNumber = (BigInteger)obj; |
| } else { |
| throw new IOException("Attribute name not recognized by" |
| + " CertAttrSet:" + extensionName + "."); |
| } |
| encodeThis(); |
| } |
| |
| /** |
| * Get the attribute value. |
| */ |
| public BigInteger get(String name) throws IOException { |
| if (name.equalsIgnoreCase(NUMBER)) { |
| return crlNumber; |
| } else { |
| throw new IOException("Attribute name not recognized by" + |
| " CertAttrSet:" + extensionName + '.'); |
| } |
| } |
| |
| /** |
| * Delete the attribute value. |
| */ |
| public void delete(String name) throws IOException { |
| if (name.equalsIgnoreCase(NUMBER)) { |
| crlNumber = null; |
| } else { |
| throw new IOException("Attribute name not recognized by" |
| + " CertAttrSet:" + extensionName + "."); |
| } |
| encodeThis(); |
| } |
| |
| /** |
| * Returns a printable representation of the CRLNumberExtension. |
| */ |
| public String toString() { |
| String s = super.toString() + extensionLabel + ": " + |
| ((crlNumber == null) ? "" : Debug.toHexString(crlNumber)) |
| + "\n"; |
| return (s); |
| } |
| |
| /** |
| * Write the extension to the DerOutputStream. |
| * |
| * @param out the DerOutputStream to write the extension to. |
| * @exception IOException on encoding errors. |
| */ |
| public void encode(OutputStream out) throws IOException { |
| DerOutputStream tmp = new DerOutputStream(); |
| encode(out, PKIXExtensions.CRLNumber_Id, true); |
| } |
| |
| /** |
| * Write the extension to the DerOutputStream. |
| * (Also called by the subclass) |
| */ |
| protected void encode(OutputStream out, ObjectIdentifier extensionId, |
| boolean isCritical) throws IOException { |
| |
| DerOutputStream tmp = new DerOutputStream(); |
| |
| if (this.extensionValue == null) { |
| this.extensionId = extensionId; |
| this.critical = isCritical; |
| encodeThis(); |
| } |
| super.encode(tmp); |
| out.write(tmp.toByteArray()); |
| } |
| |
| /** |
| * Return an enumeration of names of attributes existing within this |
| * attribute. |
| */ |
| public Enumeration<String> getElements() { |
| AttributeNameEnumeration elements = new AttributeNameEnumeration(); |
| elements.addElement(NUMBER); |
| return (elements.elements()); |
| } |
| |
| /** |
| * Return the name of this attribute. |
| */ |
| public String getName() { |
| return (extensionName); |
| } |
| } |