org.bouncycastle.asn1.cms.Time Maven / Gradle / Ivy
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package org.bouncycastle.asn1.cms;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.SimpleTimeZone;
import org.bouncycastle.asn1.ASN1Choice;
import org.bouncycastle.asn1.ASN1GeneralizedTime;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.ASN1UTCTime;
import org.bouncycastle.asn1.DERGeneralizedTime;
import org.bouncycastle.asn1.DERUTCTime;
import org.bouncycastle.asn1.LocaleUtil;
/**
* RFC 5652:
* Dual-mode timestamp format producing either UTCTIme or GeneralizedTime.
*
*
* Time ::= CHOICE {
* utcTime UTCTime,
* generalTime GeneralizedTime }
*
* This has a constructor using java.util.Date for input which generates * a {@link org.bouncycastle.asn1.DERUTCTime DERUTCTime} object if the * supplied datetime is in range 1950-01-01-00:00:00 UTC until 2049-12-31-23:59:60 UTC. * If the datetime value is outside that range, the generated object will be * {@link org.bouncycastle.asn1.DERGeneralizedTime DERGeneralizedTime}. */ public class Time extends ASN1Object implements ASN1Choice { ASN1Primitive time; public static Time getInstance( ASN1TaggedObject obj, boolean explicit) { if (!explicit) { throw new IllegalArgumentException("choice item must be explicitly tagged"); } return getInstance(obj.getExplicitBaseObject()); } private Time( ASN1Primitive time) { if (!(time instanceof ASN1UTCTime) && !(time instanceof ASN1GeneralizedTime)) { throw new IllegalArgumentException("unknown object passed to Time"); } this.time = time; } /** * Creates a time object from a given date - if the date is between 1950 * and 2049 a UTCTime object is generated, otherwise a GeneralizedTime * is used. * * @param time a date object representing the time of interest. */ public Time( Date time) { SimpleTimeZone tz = new SimpleTimeZone(0, "Z"); SimpleDateFormat dateF = new SimpleDateFormat("yyyyMMddHHmmss", LocaleUtil.EN_Locale); dateF.setTimeZone(tz); String d = dateF.format(time) + "Z"; int year = Integer.parseInt(d.substring(0, 4)); if (year < 1950 || year > 2049) { this.time = new DERGeneralizedTime(d); } else { this.time = new DERUTCTime(d.substring(2)); } } /** * Creates a time object from a given date and locale - if the date is between 1950 * and 2049 a UTCTime object is generated, otherwise a GeneralizedTime * is used. You may need to use this constructor if the default locale * doesn't use a Gregorian calender so that the GeneralizedTime produced is compatible with other ASN.1 implementations. * * @param time a date object representing the time of interest. * @param locale an appropriate Locale for producing an ASN.1 GeneralizedTime value. */ public Time( Date time, Locale locale) { SimpleTimeZone tz = new SimpleTimeZone(0, "Z"); SimpleDateFormat dateF = new SimpleDateFormat("yyyyMMddHHmmss", locale); dateF.setTimeZone(tz); String d = dateF.format(time) + "Z"; int year = Integer.parseInt(d.substring(0, 4)); if (year < 1950 || year > 2049) { this.time = new DERGeneralizedTime(d); } else { this.time = new DERUTCTime(d.substring(2)); } } /** * Return a Time object from the given object. *
* Accepted inputs:
*
* null → null
* {@link Time} object
* {@link org.bouncycastle.asn1.DERUTCTime DERUTCTime} object
* {@link org.bouncycastle.asn1.DERGeneralizedTime DERGeneralizedTime} object
*
*
* @param obj the object we want converted.
* @exception IllegalArgumentException if the object cannot be converted.
*/
public static Time getInstance(
Object obj)
{
if (obj == null || obj instanceof Time)
{
return (Time)obj;
}
else if (obj instanceof ASN1UTCTime)
{
return new Time((ASN1UTCTime)obj);
}
else if (obj instanceof ASN1GeneralizedTime)
{
return new Time((ASN1GeneralizedTime)obj);
}
throw new IllegalArgumentException("unknown object in factory: " + obj.getClass().getName());
}
/**
* Get the date and time as a String in full form century format.
*/
public String getTime()
{
if (time instanceof ASN1UTCTime)
{
return ((ASN1UTCTime)time).getAdjustedTime();
}
else
{
return ((ASN1GeneralizedTime)time).getTime();
}
}
/**
* Get java.util.Date version of date+time.
*/
public Date getDate()
{
try
{
if (time instanceof ASN1UTCTime)
{
return ((ASN1UTCTime)time).getAdjustedDate();
}
else
{
return ((ASN1GeneralizedTime)time).getDate();
}
}
catch (ParseException e)
{ // this should never happen
throw new IllegalStateException("invalid date string: " + e.getMessage());
}
}
/**
* Produce an object suitable for an ASN1OutputStream.
*/
public ASN1Primitive toASN1Primitive()
{
return time;
}
}