jdk/src/share/classes/sun/security/krb5/internal/KerberosTime.java - platform/libcore - Gitiles

 /*
  * 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();
     }
 }
	/*
	* 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();
	}
	}