From 6025b6016517c6d898d8957d1d7e03ba71431912 Mon Sep 17 00:00:00 2001
From: tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Fri, 1 Dec 2006 12:20:24 +0000
Subject: Initial import of release 2.2.

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@4 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 src/main/java/com/lowagie/bc/asn1/DERUTCTime.java | 183 ++++++++++++++++++++++
 1 file changed, 183 insertions(+)
 create mode 100644 src/main/java/com/lowagie/bc/asn1/DERUTCTime.java

(limited to 'src/main/java/com/lowagie/bc/asn1/DERUTCTime.java')

diff --git a/src/main/java/com/lowagie/bc/asn1/DERUTCTime.java b/src/main/java/com/lowagie/bc/asn1/DERUTCTime.java
new file mode 100644
index 0000000..200b23e
--- /dev/null
+++ b/src/main/java/com/lowagie/bc/asn1/DERUTCTime.java
@@ -0,0 +1,183 @@
+package com.lowagie.bc.asn1;
+
+import java.io.IOException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.SimpleTimeZone;
+
+/**
+ * UTC time object.
+ */
+public class DERUTCTime
+    extends DERObject
+{
+    String      time;
+
+    /**
+     * return an UTC Time from the passed in object.
+     *
+     * @exception IllegalArgumentException if the object cannot be converted.
+     */
+    public static DERUTCTime getInstance(
+        Object  obj)
+    {
+        if (obj == null || obj instanceof DERUTCTime)
+        {
+            return (DERUTCTime)obj;
+        }
+
+        if (obj instanceof ASN1OctetString)
+        {
+            return new DERUTCTime(((ASN1OctetString)obj).getOctets());
+        }
+
+        throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName());
+    }
+
+    /**
+     * return an UTC Time from a tagged object.
+     *
+     * @param obj the tagged object holding the object we want
+     * @param explicit true if the object is meant to be explicitly
+     *              tagged false otherwise.
+     * @exception IllegalArgumentException if the tagged object cannot
+     *               be converted.
+     */
+    public static DERUTCTime getInstance(
+        ASN1TaggedObject obj,
+        boolean          explicit)
+    {
+        return getInstance(obj.getObject());
+    }
+    
+    /**
+     * The correct format for this is YYMMDDHHMMSSZ (it used to be that seconds were
+     * never encoded. When you're creating one of these objects from scratch, that's
+     * what you want to use, otherwise we'll try to deal with whatever gets read from
+     * the input stream... (this is why the input format is different from the getTime()
+     * method output).
+     * <p>
+     *
+     * @param time the time string.
+     */
+    public DERUTCTime(
+        String  time)
+    {
+        this.time = time;
+    }
+
+    /**
+     * base constructer from a java.util.date object
+     */
+    public DERUTCTime(
+        Date time)
+    {
+        SimpleDateFormat dateF = new SimpleDateFormat("yyMMddHHmmss'Z'");
+
+        dateF.setTimeZone(new SimpleTimeZone(0,"Z"));
+
+        this.time = dateF.format(time);
+    }
+
+    DERUTCTime(
+        byte[]  bytes)
+    {
+        //
+        // explicitly convert to characters
+        //
+        char[]  dateC = new char[bytes.length];
+
+        for (int i = 0; i != dateC.length; i++)
+        {
+            dateC[i] = (char)(bytes[i] & 0xff);
+        }
+
+        this.time = new String(dateC);
+    }
+
+    /**
+     * return the time - always in the form of 
+     *  YYMMDDhhmmssGMT(+hh:mm|-hh:mm).
+     * <p>
+     * Normally in a certificate we would expect "Z" rather than "GMT",
+     * however adding the "GMT" means we can just use:
+     * <pre>
+     *     dateF = new SimpleDateFormat("yyMMddHHmmssz");
+     * </pre>
+     * To read in the time and get a date which is compatible with our local
+     * time zone.
+     * <p>
+     * <b>Note:</b> In some cases, due to the local date processing, this
+     * may lead to unexpected results. If you want to stick the normal
+     * convention of 1950 to 2049 use the getAdjustedTime() method.
+     */
+    public String getTime()
+    {
+        //
+        // standardise the format.
+        //
+        if (time.length() == 11)
+        {
+            return time.substring(0, 10) + "00GMT+00:00";
+        }
+        else if (time.length() == 13)
+        {
+            return time.substring(0, 12) + "GMT+00:00";
+        }
+        else if (time.length() == 17)
+        {
+            return time.substring(0, 12) + "GMT" + time.substring(12, 15) + ":" + time.substring(15, 17);
+        }
+
+        return time;
+    }
+
+    /**
+     * return the time as an adjusted date with a 4 digit year. This goes
+     * in the range of 1950 - 2049.
+     */
+    public String getAdjustedTime()
+    {
+        String   d = this.getTime();
+
+        if (d.charAt(0) < '5')
+        {
+            return "20" + d;
+        }
+        else
+        {
+            return "19" + d;
+        }
+    }
+
+    private byte[] getOctets()
+    {
+        char[]  cs = time.toCharArray();
+        byte[]  bs = new byte[cs.length];
+
+        for (int i = 0; i != cs.length; i++)
+        {
+            bs[i] = (byte)cs[i];
+        }
+
+        return bs;
+    }
+
+    void encode(
+        DEROutputStream  out)
+        throws IOException
+    {
+        out.writeEncoded(UTC_TIME, this.getOctets());
+    }
+    
+    public boolean equals(
+        Object  o)
+    {
+        if ((o == null) || !(o instanceof DERUTCTime))
+        {
+            return false;
+        }
+
+        return time.equals(((DERUTCTime)o).time);
+    }
+}
-- 
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