src/org/bouncycastle/asn1/x509/Time.java

   1 package org.bouncycastle.asn1.x509;
   2
   3 import java.util.Date;
   4 import java.util.SimpleTimeZone;
   5 import java.text.ParsePosition;
   6 import java.text.SimpleDateFormat;
   7
   8 import org.bouncycastle.asn1.*;
   9
  10 public class Time
  11     implements DEREncodable
  12 {
  13     DERObject   time;
  14
  15     public static Time getInstance(
  16         ASN1TaggedObject obj,
  17         boolean          explicit)
  18     {
  19         return getInstance(obj.getObject());
  20     }
  21
  22     public Time(
  23         DERObject   time)
  24     {
  25         if (!(time instanceof DERUTCTime)
  26             && !(time instanceof DERGeneralizedTime))
  27         {
  28             throw new IllegalArgumentException("unknown object passed to Time");
  29         }
  30
  31         this.time = time;
  32     }
  33
  34     /**
  35      * creates a time object from a given date - if the date is between 1950
  36      * and 2049 a UTCTime object is generated, otherwise a GeneralizedTime
  37      * is used.
  38      */
  39     public Time(
  40         Date    date)
  41     {
  42         SimpleTimeZone      tz = new SimpleTimeZone(0, "Z");
  43         SimpleDateFormat    dateF = new SimpleDateFormat("yyyyMMddHHmmss");
  44
  45         dateF.setTimeZone(tz);
  46
  47         String  d = dateF.format(date) + "Z";
  48         int     year = Integer.parseInt(d.substring(0, 4));
  49
  50         if (year < 1950 || year > 2049)
  51         {
  52             time = new DERGeneralizedTime(d);
  53         }
  54         else
  55         {
  56             time = new DERUTCTime(d.substring(2));
  57         }
  58     }
  59
  60     public static Time getInstance(
  61         Object  obj)
  62     {
  63         if (obj instanceof Time)
  64         {
  65             return (Time)obj;
  66         }
  67         else if (obj instanceof DERUTCTime)
  68         {
  69             return new Time((DERUTCTime)obj);
  70         }
  71         else if (obj instanceof DERGeneralizedTime)
  72         {
  73             return new Time((DERGeneralizedTime)obj);
  74         }
  75
  76         throw new IllegalArgumentException("unknown object in factory");
  77     }
  78
  79     public String getTime()
  80     {
  81         if (time instanceof DERUTCTime)
  82         {
  83             return ((DERUTCTime)time).getAdjustedTime();
  84         }
  85         else
  86         {
  87             return ((DERGeneralizedTime)time).getTime();
  88         }
  89     }
  90
  91     public Date getDate()
  92     {
  93         SimpleDateFormat dateF = new SimpleDateFormat("yyyyMMddHHmmssz");
  94
  95         return dateF.parse(this.getTime(), new ParsePosition(0));
  96     }
  97
  98     /**
  99      * <pre>
 100      * Time ::= CHOICE {
 101      *             utcTime        UTCTime,
 102      *             generalTime    GeneralizedTime }
 103      * </pre>
 104      */
 105     public DERObject getDERObject()
 106     {
 107         return time;
 108     }
 109 }