0N/A/*
2362N/A * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
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0N/A */
0N/A
0N/Apackage sun.security.x509;
0N/A
0N/Aimport java.io.IOException;
0N/Aimport java.io.InputStream;
0N/Aimport java.io.OutputStream;
0N/Aimport java.util.Enumeration;
0N/A
0N/Aimport sun.security.util.*;
0N/A
0N/A/**
0N/A * This class defines the version of the X509 Certificate.
0N/A *
0N/A * @author Amit Kapoor
0N/A * @author Hemma Prafullchandra
0N/A * @see CertAttrSet
0N/A */
0N/Apublic class CertificateVersion implements CertAttrSet<String> {
0N/A /**
0N/A * X509Certificate Version 1
0N/A */
0N/A public static final int V1 = 0;
0N/A /**
0N/A * X509Certificate Version 2
0N/A */
0N/A public static final int V2 = 1;
0N/A /**
0N/A * X509Certificate Version 3
0N/A */
0N/A public static final int V3 = 2;
0N/A /**
0N/A * Identifier for this attribute, to be used with the
0N/A * get, set, delete methods of Certificate, x509 type.
0N/A */
0N/A public static final String IDENT = "x509.info.version";
0N/A /**
0N/A * Sub attributes name for this CertAttrSet.
0N/A */
0N/A public static final String NAME = "version";
0N/A public static final String VERSION = "number";
0N/A
0N/A // Private data members
0N/A int version = V1;
0N/A
0N/A // Returns the version number.
0N/A private int getVersion() {
0N/A return(version);
0N/A }
0N/A
0N/A // Construct the class from the passed DerValue
0N/A private void construct(DerValue derVal) throws IOException {
0N/A if (derVal.isConstructed() && derVal.isContextSpecific()) {
0N/A derVal = derVal.data.getDerValue();
0N/A version = derVal.getInteger();
0N/A if (derVal.data.available() != 0) {
0N/A throw new IOException("X.509 version, bad format");
0N/A }
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * The default constructor for this class,
0N/A * sets the version to 0 (i.e. X.509 version 1).
0N/A */
0N/A public CertificateVersion() {
0N/A version = V1;
0N/A }
0N/A
0N/A /**
0N/A * The constructor for this class for the required version.
0N/A *
0N/A * @param version the version for the certificate.
0N/A * @exception IOException if the version is not valid.
0N/A */
0N/A public CertificateVersion(int version) throws IOException {
0N/A
0N/A // check that it is a valid version
0N/A if (version == V1 || version == V2 || version == V3)
0N/A this.version = version;
0N/A else {
0N/A throw new IOException("X.509 Certificate version " +
0N/A version + " not supported.\n");
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * Create the object, decoding the values from the passed DER stream.
0N/A *
0N/A * @param in the DerInputStream to read the CertificateVersion from.
0N/A * @exception IOException on decoding errors.
0N/A */
0N/A public CertificateVersion(DerInputStream in) throws IOException {
0N/A version = V1;
0N/A DerValue derVal = in.getDerValue();
0N/A
0N/A construct(derVal);
0N/A }
0N/A
0N/A /**
0N/A * Create the object, decoding the values from the passed stream.
0N/A *
0N/A * @param in the InputStream to read the CertificateVersion from.
0N/A * @exception IOException on decoding errors.
0N/A */
0N/A public CertificateVersion(InputStream in) throws IOException {
0N/A version = V1;
0N/A DerValue derVal = new DerValue(in);
0N/A
0N/A construct(derVal);
0N/A }
0N/A
0N/A /**
0N/A * Create the object, decoding the values from the passed DerValue.
0N/A *
0N/A * @param val the Der encoded value.
0N/A * @exception IOException on decoding errors.
0N/A */
0N/A public CertificateVersion(DerValue val) throws IOException {
0N/A version = V1;
0N/A
0N/A construct(val);
0N/A }
0N/A
0N/A /**
0N/A * Return the version number of the certificate.
0N/A */
0N/A public String toString() {
0N/A return("Version: V" + (version+1));
0N/A }
0N/A
0N/A /**
0N/A * Encode the CertificateVersion period in DER form to the stream.
0N/A *
0N/A * @param out the OutputStream to marshal the contents to.
0N/A * @exception IOException on errors.
0N/A */
0N/A public void encode(OutputStream out) throws IOException {
0N/A // Nothing for default
0N/A if (version == V1) {
0N/A return;
0N/A }
0N/A DerOutputStream tmp = new DerOutputStream();
0N/A tmp.putInteger(version);
0N/A
0N/A DerOutputStream seq = new DerOutputStream();
0N/A seq.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0),
0N/A tmp);
0N/A
0N/A out.write(seq.toByteArray());
0N/A }
0N/A
0N/A /**
0N/A * Set the attribute value.
0N/A */
0N/A public void set(String name, Object obj) throws IOException {
0N/A if (!(obj instanceof Integer)) {
0N/A throw new IOException("Attribute must be of type Integer.");
0N/A }
0N/A if (name.equalsIgnoreCase(VERSION)) {
0N/A version = ((Integer)obj).intValue();
0N/A } else {
0N/A throw new IOException("Attribute name not recognized by " +
0N/A "CertAttrSet: CertificateVersion.");
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * Get the attribute value.
0N/A */
0N/A public Object get(String name) throws IOException {
0N/A if (name.equalsIgnoreCase(VERSION)) {
0N/A return(new Integer(getVersion()));
0N/A } else {
0N/A throw new IOException("Attribute name not recognized by " +
0N/A "CertAttrSet: CertificateVersion.");
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * Delete the attribute value.
0N/A */
0N/A public void delete(String name) throws IOException {
0N/A if (name.equalsIgnoreCase(VERSION)) {
0N/A version = V1;
0N/A } else {
0N/A throw new IOException("Attribute name not recognized by " +
0N/A "CertAttrSet: CertificateVersion.");
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * Return an enumeration of names of attributes existing within this
0N/A * attribute.
0N/A */
0N/A public Enumeration<String> getElements() {
0N/A AttributeNameEnumeration elements = new AttributeNameEnumeration();
0N/A elements.addElement(VERSION);
0N/A
0N/A return (elements.elements());
0N/A }
0N/A
0N/A /**
0N/A * Return the name of this attribute.
0N/A */
0N/A public String getName() {
0N/A return(NAME);
0N/A }
0N/A
0N/A /**
0N/A * Compare versions.
0N/A */
0N/A public int compare(int vers) {
0N/A return(version - vers);
0N/A }
0N/A}