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/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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*
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* (C) Copyright IBM Corp. 1999 All Rights Reserved.
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* Copyright 1997 The Open Group Research Institute. All rights reserved.
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*/
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package sun.security.krb5.internal.util;
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import java.io.IOException;
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import java.util.Arrays;
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import sun.security.krb5.internal.Krb5;
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import sun.security.util.BitArray;
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import sun.security.util.DerOutputStream;
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/**
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* A wrapper class around sun.security.util.BitArray, so that KDCOptions,
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* TicketFlags and ApOptions in krb5 classes can utilize some functions
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* in BitArray classes.
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*
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* The data type is defined in RFC 4120 as:
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*
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* 5.2.8. KerberosFlags
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*
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* For several message types, a specific constrained bit string type,
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* KerberosFlags, is used.
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*
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* KerberosFlags ::= BIT STRING (SIZE (32..MAX))
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* -- minimum number of bits shall be sent,
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* -- but no fewer than 32
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*
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* @author Yanni Zhang
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*/
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public class KerberosFlags {
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BitArray bits;
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// This constant is used by child classes.
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protected static final int BITS_PER_UNIT = 8;
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public KerberosFlags(int length) throws IllegalArgumentException {
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bits = new BitArray(length);
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}
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public KerberosFlags(int length, byte[] a) throws IllegalArgumentException {
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bits = new BitArray(length, a);
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if (length != Krb5.KRB_FLAGS_MAX+1) {
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bits = new BitArray(Arrays.copyOf(bits.toBooleanArray(), Krb5.KRB_FLAGS_MAX+1));
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}
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}
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public KerberosFlags(boolean[] bools) {
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bits = new BitArray((bools.length==Krb5.KRB_FLAGS_MAX+1)?
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bools:
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Arrays.copyOf(bools, Krb5.KRB_FLAGS_MAX+1));
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}
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public void set(int index, boolean value) {
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bits.set(index, value);
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}
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public boolean get(int index) {
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return bits.get(index);
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}
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public boolean[] toBooleanArray() {
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return bits.toBooleanArray();
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}
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/**
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* Writes the encoded data.
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*
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* @exception IOException if an I/O error occurs while reading encoded data.
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* @return an byte array of encoded KDCOptions.
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*/
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public byte[] asn1Encode() throws IOException {
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DerOutputStream out = new DerOutputStream();
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out.putUnalignedBitString(bits);
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return out.toByteArray();
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}
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public String toString() {
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return bits.toString();
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}
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}
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