From 5142187d26acf1fca4e229e175a4153c6ad378d6 Mon Sep 17 00:00:00 2001
From: Chris Ridd <chris.ridd@forgerock.com>
Date: Wed, 08 Aug 2012 15:44:32 +0000
Subject: [PATCH] Fix OPENDJ-559 UTCTimeSyntax parses 32... as 1932

---
 opendj3/opendj-ldap-sdk/src/main/java/org/forgerock/opendj/ldap/schema/UTCTimeSyntaxImpl.java |   38 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/opendj3/opendj-ldap-sdk/src/main/java/org/forgerock/opendj/ldap/schema/UTCTimeSyntaxImpl.java b/opendj3/opendj-ldap-sdk/src/main/java/org/forgerock/opendj/ldap/schema/UTCTimeSyntaxImpl.java
index 3f7c0d4..4089c10 100644
--- a/opendj3/opendj-ldap-sdk/src/main/java/org/forgerock/opendj/ldap/schema/UTCTimeSyntaxImpl.java
+++ b/opendj3/opendj-ldap-sdk/src/main/java/org/forgerock/opendj/ldap/schema/UTCTimeSyntaxImpl.java
@@ -22,6 +22,7 @@
  *
  *
  *      Copyright 2009 Sun Microsystems, Inc.
+ *      Portions copyright 2012 ForgeRock AS
  */
 
 package org.forgerock.opendj.ldap.schema;
@@ -30,6 +31,7 @@
 import static org.forgerock.opendj.ldap.schema.SchemaConstants.*;
 
 import java.text.SimpleDateFormat;
+import java.util.Calendar;
 import java.util.Date;
 import java.util.TimeZone;
 
@@ -62,6 +64,12 @@
      */
     private final static SimpleDateFormat DATE_FORMAT;
 
+    /**
+     * The date formatter needs help converting 2-digit years.
+     */
+    private static Date datum1900;
+    private static Date datum2000;
+
     /*
      * Create the date formatter that will be used to construct and parse
      * normalized UTC time values.
@@ -71,6 +79,15 @@
         DATE_FORMAT.setLenient(false);
         DATE_FORMAT.setTimeZone(TimeZone.getTimeZone(TIME_ZONE_UTC));
 
+        Calendar cal = Calendar.getInstance(TimeZone.getTimeZone(TIME_ZONE_UTC));
+        cal.clear();
+        cal.set(1900, 0, 1);
+        datum1900 = cal.getTime();
+
+        cal.clear();
+        cal.set(2000, 0, 1);
+        datum2000 = cal.getTime();
+
         DATE_FORMAT_LOCK = new Object();
     }
 
@@ -104,6 +121,27 @@
     static Date decodeUTCTimeValue(final String valueString) throws DecodeException {
         try {
             synchronized (DATE_FORMAT_LOCK) {
+                // RFC 3280 4.1.2.5.1. defines the datum we need to
+                // set for the parser.
+                switch (valueString.charAt(0)) {
+                case '0':
+                case '1':
+                case '2':
+                case '3':
+                case '4':
+                    // 00-49
+                    DATE_FORMAT.set2DigitYearStart(datum2000);
+                    break;
+                case '5':
+                case '6':
+                case '7':
+                case '8':
+                case '9':
+                default:
+                    // 50-99
+                    DATE_FORMAT.set2DigitYearStart(datum1900);
+                    break;
+                }
                 return DATE_FORMAT.parse(valueString);
             }
         } catch (final Exception e) {

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