2003/02/12 06:21:04

[org.ibex.core.git] / src / org / bouncycastle / asn1 / x509 / Time.java

diff --git a/src/org/bouncycastle/asn1/x509/Time.java b/src/org/bouncycastle/asn1/x509/Time.java
new file mode 100644 (file)
index 0000000..77c72bf
--- /dev/null
+++ b/src/org/bouncycastle/asn1/x509/Time.java
@@ -0,0 +1,109 @@
+package org.bouncycastle.asn1.x509;
+
+import java.util.Date;
+import java.util.SimpleTimeZone;
+import java.text.ParsePosition;
+import java.text.SimpleDateFormat;
+
+import org.bouncycastle.asn1.*;
+
+public class Time
+    implements DEREncodable
+{
+    DERObject   time;
+
+    public static Time getInstance(
+        ASN1TaggedObject obj,
+        boolean          explicit)
+    {
+        return getInstance(obj.getObject());
+    }
+
+    public Time(
+        DERObject   time)
+    {
+        if (!(time instanceof DERUTCTime)
+            && !(time instanceof DERGeneralizedTime))
+        {
+            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.
+     */
+    public Time(
+        Date    date)
+    {
+        SimpleTimeZone      tz = new SimpleTimeZone(0, "Z");
+        SimpleDateFormat    dateF = new SimpleDateFormat("yyyyMMddHHmmss");
+
+        dateF.setTimeZone(tz);
+
+        String  d = dateF.format(date) + "Z";
+        int     year = Integer.parseInt(d.substring(0, 4));
+
+        if (year < 1950 || year > 2049)
+        {
+            time = new DERGeneralizedTime(d);
+        }
+        else
+        {
+            time = new DERUTCTime(d.substring(2));
+        }
+    }
+
+    public static Time getInstance(
+        Object  obj)
+    {
+        if (obj instanceof Time)
+        {
+            return (Time)obj;
+        }
+        else if (obj instanceof DERUTCTime)
+        {
+            return new Time((DERUTCTime)obj);
+        }
+        else if (obj instanceof DERGeneralizedTime)
+        {
+            return new Time((DERGeneralizedTime)obj);
+        }
+
+        throw new IllegalArgumentException("unknown object in factory");
+    }
+
+    public String getTime()
+    {
+        if (time instanceof DERUTCTime)
+        {
+            return ((DERUTCTime)time).getAdjustedTime();
+        }
+        else
+        {
+            return ((DERGeneralizedTime)time).getTime();
+        }
+    }
+
+    public Date getDate()
+    {
+        SimpleDateFormat dateF = new SimpleDateFormat("yyyyMMddHHmmssz");
+
+        return dateF.parse(this.getTime(), new ParsePosition(0));
+    }
+
+    /**
+     * <pre>
+     * Time ::= CHOICE {
+     *             utcTime        UTCTime,
+     *             generalTime    GeneralizedTime }
+     * </pre>
+     */
+    public DERObject getDERObject()
+    {
+        return time;
+    }
+}