--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/security/krb5/internal/LastReq.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,137 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ *
+ *  (C) Copyright IBM Corp. 1999 All Rights Reserved.
+ *  Copyright 1997 The Open Group Research Institute.  All rights reserved.
+ */
+
+package sun.security.krb5.internal;
+
+import sun.security.util.*;
+import sun.security.krb5.Asn1Exception;
+import java.util.Vector;
+import java.io.IOException;
+
+/**
+ * Implements the ASN.1 LastReq type.
+ *
+ * <xmp>
+ * LastReq         ::=     SEQUENCE OF SEQUENCE {
+ *         lr-type         [0] Int32,
+ *         lr-value        [1] KerberosTime
+ * }
+ * </xmp>
+ *
+ * <p>
+ * This definition reflects the Network Working Group RFC 4120
+ * specification available at
+ * <a href="http://www.ietf.org/rfc/rfc4120.txt">
+ * http://www.ietf.org/rfc/rfc4120.txt</a>.
+ */
+
+public class LastReq {
+    private LastReqEntry[] entry = null;
+
+    public LastReq(LastReqEntry[] entries) throws IOException {
+        if (entries != null) {
+            entry = new LastReqEntry[entries.length];
+            for (int i = 0; i < entries.length; i++) {
+                if (entries[i] == null) {
+                    throw new IOException("Cannot create a LastReqEntry");
+                } else {
+                    entry[i] = (LastReqEntry)entries[i].clone();
+                }
+            }
+        }
+
+    }
+
+    /**
+     * Constructs a LastReq object.
+     * @param encoding a Der-encoded data.
+     * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.
+     * @exception IOException if an I/O error occurs while reading encoded data.
+     */
+
+    public LastReq(DerValue encoding) throws Asn1Exception, IOException {
+        Vector<LastReqEntry> v= new Vector<LastReqEntry> ();
+        if (encoding.getTag() != DerValue.tag_Sequence) {
+            throw new Asn1Exception(Krb5.ASN1_BAD_ID);
+        }
+        while (encoding.getData().available() > 0) {
+            v.addElement(new LastReqEntry(encoding.getData().getDerValue()));
+        }
+        if (v.size() > 0) {
+            entry = new LastReqEntry[v.size()];
+            v.copyInto(entry);
+        }
+    }
+
+    /**
+     * Encodes an LastReq object.
+     * @return the byte array of encoded LastReq object.
+     * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.
+     * @exception IOException if an I/O error occurs while reading encoded data.
+     */
+    public byte[] asn1Encode() throws Asn1Exception, IOException {
+        DerOutputStream bytes = new DerOutputStream();
+        if (entry != null && entry.length > 0) {
+            DerOutputStream temp = new DerOutputStream();
+            for (int i = 0; i < entry.length; i++)
+                temp.write(entry[i].asn1Encode());
+            bytes.write(DerValue.tag_Sequence, temp);
+            return bytes.toByteArray();
+        }
+        return null;
+    }
+
+    /**
+     * Parse (unmarshal) a last request from a DER input stream.  This form
+     * parsing might be used when expanding a value which is part of
+     * a constructed sequence and uses explicitly tagged type.
+     *
+     * @exception Asn1Exception on error.
+     * @param data the Der input stream value, which contains one or more marshaled value.
+     * @param explicitTag tag number.
+     * @param optional indicates if this data field is optional
+     * @return an instance of LastReq.
+     *
+     */
+
+    public static LastReq parse(DerInputStream data, byte explicitTag, boolean optional) throws Asn1Exception, IOException {
+        if ((optional) && (((byte)data.peekByte() & (byte)0x1F) != explicitTag))
+            return null;
+        DerValue der = data.getDerValue();
+        if (explicitTag != (der.getTag() & (byte)0x1F))  {
+            throw new Asn1Exception(Krb5.ASN1_BAD_ID);
+        }
+        else {
+            DerValue subDer = der.getData().getDerValue();
+            return new LastReq(subDer);
+        }
+    }
+
+}