--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/security/krb5/internal/KerberosTime.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,345 @@
+/*
+ * 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. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ *
+ * (C) Copyright IBM Corp. 1999 All Rights Reserved.
+ * Copyright 1997 The Open Group Research Institute. All rights reserved.
+ */
+
+package sun.security.krb5.internal;
+
+import java.util.TimeZone;
+import sun.security.util.*;
+import sun.security.krb5.Config;
+import sun.security.krb5.KrbException;
+import sun.security.krb5.Asn1Exception;
+import java.util.Date;
+import java.util.GregorianCalendar;
+import java.util.Calendar;
+import java.io.IOException;
+
+/**
+ * Implements the ASN.1 KerberosTime type.
+ *
+ * <xmp>
+ * KerberosTime ::= GeneralizedTime -- with no fractional seconds
+ * </xmp>
+ *
+ * The timestamps used in Kerberos are encoded as GeneralizedTimes. A
+ * KerberosTime value shall not include any fractional portions of the
+ * seconds. As required by the DER, it further shall not include any
+ * separators, and it shall specify the UTC time zone (Z).
+ *
+ * <p>
+ * This definition reflects the Network Working Group RFC 4120
+ * specification available at
+ * <a href="http://www.ietf.org/rfc/rfc4120.txt">
+ * http://www.ietf.org/rfc/rfc4120.txt</a>.
+ */
+
+public class KerberosTime implements Cloneable {
+
+ private long kerberosTime; // milliseconds since epoch, a Date.getTime() value
+ private static long syncTime;
+ private static boolean DEBUG = Krb5.DEBUG;
+
+ public static final boolean NOW = true;
+ public static final boolean UNADJUSTED_NOW = false;
+
+ //defaults to zero instead of now; use setNow() for current time
+ public KerberosTime() {
+ kerberosTime = 0;
+ }
+
+ public KerberosTime(long time) {
+ kerberosTime = time;
+ }
+
+
+ public Object clone() {
+ return new KerberosTime(kerberosTime);
+ }
+
+ // This constructor is used in the native code
+ // src/windows/native/sun/security/krb5/NativeCreds.c
+ public KerberosTime(String time) throws Asn1Exception {
+ kerberosTime = toKerberosTime(time);
+ }
+
+ /**
+ * Constructs a KerberosTime object.
+ * @param encoding a DER-encoded data.
+ * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.
+ * @exception IOException if an I/O error occurs while reading encoded data.
+ */
+ public KerberosTime(DerValue encoding) throws Asn1Exception, IOException {
+ GregorianCalendar calendar = new GregorianCalendar();
+ Date temp = encoding.getGeneralizedTime();
+ kerberosTime = temp.getTime();
+ }
+
+ private static long toKerberosTime(String time) throws Asn1Exception {
+ // this method only used by KerberosTime class.
+
+ // ASN.1 GeneralizedTime format:
+
+ // "19700101000000Z"
+ // | | | | | | |
+ // 0 4 6 8 | | |
+ // 10 | |
+ // 12 |
+ // 14
+
+ if (time.length() != 15)
+ throw new Asn1Exception(Krb5.ASN1_BAD_TIMEFORMAT);
+ if (time.charAt(14) != 'Z')
+ throw new Asn1Exception(Krb5.ASN1_BAD_TIMEFORMAT);
+ int year = Integer.parseInt(time.substring(0, 4));
+ Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+ calendar.clear(); // so that millisecond is zero
+ calendar.set(year,
+ Integer.parseInt(time.substring(4, 6)) - 1,
+ Integer.parseInt(time.substring(6, 8)),
+ Integer.parseInt(time.substring(8, 10)),
+ Integer.parseInt(time.substring(10, 12)),
+ Integer.parseInt(time.substring(12, 14)));
+
+ //The Date constructor assumes the setting are local relative
+ //and converts the time to UTC before storing it. Since we
+ //want the internal representation to correspond to local
+ //and not UTC time we subtract the UTC time offset.
+ return (calendar.getTime().getTime());
+
+ }
+
+ // should be moved to sun.security.krb5.util class
+ public static String zeroPad(String s, int length) {
+ StringBuffer temp = new StringBuffer(s);
+ while (temp.length() < length)
+ temp.insert(0, '0');
+ return temp.toString();
+ }
+
+ public KerberosTime(Date time) {
+ kerberosTime = time.getTime(); // (time.getTimezoneOffset() * 60000L);
+ }
+
+ public KerberosTime(boolean initToNow) {
+ if (initToNow) {
+ Date temp = new Date();
+ setTime(temp);
+ }
+ else
+ kerberosTime = 0;
+ }
+
+ /**
+ * Returns a string representation of KerberosTime object.
+ * @return a string representation of this object.
+ */
+ public String toGeneralizedTimeString() {
+ Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+ calendar.clear();
+
+ calendar.setTimeInMillis(kerberosTime);
+ return zeroPad(Integer.toString(calendar.get(Calendar.YEAR)), 4) +
+ zeroPad(Integer.toString(calendar.get(Calendar.MONTH) + 1), 2) +
+ zeroPad(Integer.toString(calendar.get(Calendar.DAY_OF_MONTH)), 2) +
+ zeroPad(Integer.toString(calendar.get(Calendar.HOUR_OF_DAY)), 2) +
+ zeroPad(Integer.toString(calendar.get(Calendar.MINUTE)), 2) +
+ zeroPad(Integer.toString(calendar.get(Calendar.SECOND)), 2) + 'Z';
+
+ }
+
+ /**
+ * Encodes this object to a byte array.
+ * @return a byte array of encoded data.
+ * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.
+ * @exception IOException if an I/O error occurs while reading encoded data.
+ */
+ public byte[] asn1Encode() throws Asn1Exception, IOException {
+ DerOutputStream out = new DerOutputStream();
+ out.putGeneralizedTime(this.toDate());
+ return out.toByteArray();
+ }
+
+ public long getTime() {
+ return kerberosTime;
+ }
+
+
+ public void setTime(Date time) {
+ kerberosTime = time.getTime(); // (time.getTimezoneOffset() * 60000L);
+ }
+
+ public void setTime(long time) {
+ kerberosTime = time;
+ }
+
+ public Date toDate() {
+ Date temp = new Date(kerberosTime);
+ temp.setTime(temp.getTime());
+ return temp;
+ }
+
+ public void setNow() {
+ Date temp = new Date();
+ setTime(temp);
+ }
+
+ public int getMicroSeconds() {
+ Long temp_long = new Long((kerberosTime % 1000L) * 1000L);
+ return temp_long.intValue();
+ }
+
+ public void setMicroSeconds(int usec) {
+ Integer temp_int = new Integer(usec);
+ long temp_long = temp_int.longValue() / 1000L;
+ kerberosTime = kerberosTime - (kerberosTime % 1000L) + temp_long;
+ }
+
+ public void setMicroSeconds(Integer usec) {
+ if (usec != null) {
+ long temp_long = usec.longValue() / 1000L;
+ kerberosTime = kerberosTime - (kerberosTime % 1000L) + temp_long;
+ }
+ }
+
+ public boolean inClockSkew(int clockSkew) {
+ KerberosTime now = new KerberosTime(KerberosTime.NOW);
+
+ if (java.lang.Math.abs(kerberosTime - now.kerberosTime) >
+ clockSkew * 1000L)
+ return false;
+ return true;
+ }
+
+ public boolean inClockSkew() {
+ return inClockSkew(getDefaultSkew());
+ }
+
+ public boolean inClockSkew(int clockSkew, KerberosTime now) {
+ if (java.lang.Math.abs(kerberosTime - now.kerberosTime) >
+ clockSkew * 1000L)
+ return false;
+ return true;
+ }
+
+ public boolean inClockSkew(KerberosTime time) {
+ return inClockSkew(getDefaultSkew(), time);
+ }
+
+ public boolean greaterThanWRTClockSkew(KerberosTime time, int clockSkew) {
+ if ((kerberosTime - time.kerberosTime) > clockSkew * 1000L)
+ return true;
+ return false;
+ }
+
+ public boolean greaterThanWRTClockSkew(KerberosTime time) {
+ return greaterThanWRTClockSkew(time, getDefaultSkew());
+ }
+
+ public boolean greaterThan(KerberosTime time) {
+ return kerberosTime > time.kerberosTime;
+ }
+
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+
+ if (!(obj instanceof KerberosTime)) {
+ return false;
+ }
+
+ return kerberosTime == ((KerberosTime)obj).kerberosTime;
+ }
+
+ public int hashCode() {
+ return 37 * 17 + (int)(kerberosTime ^ (kerberosTime >>> 32));
+ }
+
+ public boolean isZero() {
+ return kerberosTime == 0;
+ }
+
+ public int getSeconds() {
+ Long temp_long = new Long(kerberosTime / 1000L);
+ return temp_long.intValue();
+ }
+
+ public void setSeconds(int sec) {
+ Integer temp_int = new Integer(sec);
+ kerberosTime = temp_int.longValue() * 1000L;
+ }
+
+ /**
+ * Parse (unmarshal) a kerberostime from a DER input stream. This form
+ * parsing might be used when expanding a value which is part of
+ * a constructed sequence and uses explicitly tagged type.
+ *
+ * @exception Asn1Exception on error.
+ * @param data the Der input stream value, which contains one or more marshaled value.
+ * @param explicitTag tag number.
+ * @param optional indicates if this data field is optional
+ * @return an instance of KerberosTime.
+ *
+ */
+ public static KerberosTime parse(DerInputStream data, byte explicitTag, boolean optional) throws Asn1Exception, IOException {
+ if ((optional) && (((byte)data.peekByte() & (byte)0x1F)!= explicitTag))
+ return null;
+ DerValue der = data.getDerValue();
+ if (explicitTag != (der.getTag() & (byte)0x1F)) {
+ throw new Asn1Exception(Krb5.ASN1_BAD_ID);
+ }
+ else {
+ DerValue subDer = der.getData().getDerValue();
+ return new KerberosTime(subDer);
+ }
+ }
+
+ public static int getDefaultSkew() {
+ int tdiff = Krb5.DEFAULT_ALLOWABLE_CLOCKSKEW;
+ try {
+ Config c = Config.getInstance();
+ if ((tdiff = c.getDefaultIntValue("clockskew",
+ "libdefaults")) == Integer.MIN_VALUE) { //value is not defined
+ tdiff = Krb5.DEFAULT_ALLOWABLE_CLOCKSKEW;
+ }
+ } catch (KrbException e) {
+ if (DEBUG) {
+ System.out.println("Exception in getting clockskew from " +
+ "Configuration " +
+ "using default value " +
+ e.getMessage());
+ }
+ }
+ return tdiff;
+ }
+
+ public String toString() {
+ return toGeneralizedTimeString();
+ }
+}