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/* * Copyright (c) 1997, 2006, 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.security.cert.*;import java.util.Date;import java.util.Enumeration; import sun.security.util.*; /** * This class defines the interval for which the certificate is valid. * * @author Amit Kapoor * @author Hemma Prafullchandra * @see CertAttrSet */public class CertificateValidity implements CertAttrSet<String> {    /**     * Identifier for this attribute, to be used with the     * get, set, delete methods of Certificate, x509 type.     */    public static final String IDENT = "x509.info.validity";    /**     * Sub attributes name for this CertAttrSet.     */    public static final String NAME = "validity";    public static final String NOT_BEFORE = "notBefore";    public static final String NOT_AFTER = "notAfter";    private static final long YR_2050 = 2524636800000L;     // Private data members    private Date        notBefore;    private Date        notAfter;     // Returns the first time the certificate is valid.    private Date getNotBefore() {        return (new Date(notBefore.getTime()));    }     // Returns the last time the certificate is valid.    private Date getNotAfter() {       return (new Date(notAfter.getTime()));    }     // Construct the class from the DerValue    private void construct(DerValue derVal) throws IOException {        if (derVal.tag != DerValue.tag_Sequence) {            throw new IOException("Invalid encoded CertificateValidity, " +                                  "starting sequence tag missing.");        }        // check if UTCTime encoded or GeneralizedTime        if (derVal.data.available() == 0)            throw new IOException("No data encoded for CertificateValidity");         DerInputStream derIn = new DerInputStream(derVal.toByteArray());        DerValue[] seq = derIn.getSequence(2);        if (seq.length != 2)            throw new IOException("Invalid encoding for CertificateValidity");         if (seq[0].tag == DerValue.tag_UtcTime) {            notBefore = derVal.data.getUTCTime();        } else if (seq[0].tag == DerValue.tag_GeneralizedTime) {            notBefore = derVal.data.getGeneralizedTime();        } else {            throw new IOException("Invalid encoding for CertificateValidity");        }         if (seq[1].tag == DerValue.tag_UtcTime) {            notAfter = derVal.data.getUTCTime();        } else if (seq[1].tag == DerValue.tag_GeneralizedTime) {            notAfter = derVal.data.getGeneralizedTime();        } else {            throw new IOException("Invalid encoding for CertificateValidity");        }    }     /**     * Default constructor for the class.     */    public CertificateValidity() { }     /**     * The default constructor for this class for the specified interval.     *     * @param notBefore the date and time before which the certificate     *                   is not valid.     * @param notAfter the date and time after which the certificate is     *                  not valid.     */    public CertificateValidity(Date notBefore, Date notAfter) {        this.notBefore = notBefore;        this.notAfter = notAfter;    }     /**     * Create the object, decoding the values from the passed DER stream.     *     * @param in the DerInputStream to read the CertificateValidity from.     * @exception IOException on decoding errors.     */    public CertificateValidity(DerInputStream in) throws IOException {        DerValue derVal = in.getDerValue();        construct(derVal);    }     /**     * Return the validity period as user readable string.     */    public String toString() {        if (notBefore == null || notAfter == null)            return "";        return ("Validity: [From: " + notBefore.toString() +             ",\n               To: " + notAfter.toString() + "]");    }     /**     * Encode the CertificateValidity period in DER form to the stream.     *     * @param out the OutputStream to marshal the contents to.     * @exception IOException on errors.     */    public void encode(OutputStream out) throws IOException {         // in cases where default constructor is used check for        // null values        if (notBefore == null || notAfter == null) {            throw new IOException("CertAttrSet:CertificateValidity:" +                                  " null values to encode.\n");        }        DerOutputStream pair = new DerOutputStream();         if (notBefore.getTime() < YR_2050) {            pair.putUTCTime(notBefore);        } else            pair.putGeneralizedTime(notBefore);         if (notAfter.getTime() < YR_2050) {            pair.putUTCTime(notAfter);        } else {            pair.putGeneralizedTime(notAfter);        }        DerOutputStream seq = new DerOutputStream();        seq.write(DerValue.tag_Sequence, pair);         out.write(seq.toByteArray());    }     /**     * Set the attribute value.     */    public void set(String name, Object obj) throws IOException {        if (!(obj instanceof Date)) {            throw new IOException("Attribute must be of type Date.");        }        if (name.equalsIgnoreCase(NOT_BEFORE)) {            notBefore = (Date)obj;        } else if (name.equalsIgnoreCase(NOT_AFTER)) {            notAfter = (Date)obj;        } else {            throw new IOException("Attribute name not recognized by " +                            "CertAttrSet: CertificateValidity.");        }    }     /**     * Get the attribute value.     */    public Object get(String name) throws IOException {        if (name.equalsIgnoreCase(NOT_BEFORE)) {            return (getNotBefore());        } else if (name.equalsIgnoreCase(NOT_AFTER)) {            return (getNotAfter());        } else {            throw new IOException("Attribute name not recognized by " +                            "CertAttrSet: CertificateValidity.");        }    }     /**     * Delete the attribute value.     */    public void delete(String name) throws IOException {        if (name.equalsIgnoreCase(NOT_BEFORE)) {            notBefore = null;        } else if (name.equalsIgnoreCase(NOT_AFTER)) {            notAfter = null;        } else {            throw new IOException("Attribute name not recognized by " +                            "CertAttrSet: CertificateValidity.");        }    }     /**     * Return an enumeration of names of attributes existing within this     * attribute.     */    public Enumeration<String> getElements() {        AttributeNameEnumeration elements = new AttributeNameEnumeration();        elements.addElement(NOT_BEFORE);        elements.addElement(NOT_AFTER);         return (elements.elements());    }     /**     * Return the name of this attribute.     */    public String getName() {        return (NAME);    }     /**     * Verify that the current time is within the validity period.     *     * @exception CertificateExpiredException if the certificate has expired.     * @exception CertificateNotYetValidException if the certificate is not     * yet valid.     */    public void valid()    throws CertificateNotYetValidException, CertificateExpiredException {        Date now = new Date();        valid(now);    }     /**     * Verify that the passed time is within the validity period.     * @param now the Date against which to compare the validity     * period.     *     * @exception CertificateExpiredException if the certificate has expired     * with respect to the <code>Date</code> supplied.     * @exception CertificateNotYetValidException if the certificate is not     * yet valid with respect to the <code>Date</code> supplied.     *     */    public void valid(Date now)    throws CertificateNotYetValidException, CertificateExpiredException {        /*         * we use the internal Dates rather than the passed in Date         * because someone could override the Date methods after()         * and before() to do something entirely different.         */        if (notBefore.after(now)) {            throw new CertificateNotYetValidException("NotBefore: " +                                                      notBefore.toString());        }        if (notAfter.before(now)) {            throw new CertificateExpiredException("NotAfter: " +                                                  notAfter.toString());        }    }}