1 /* 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. Oracle designates this 7 * particular file as subject to the "Classpath" exception as provided 8 * by Oracle in the LICENSE file that accompanied this code. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 */ 24 25 /* 26 * 27 * (C) Copyright IBM Corp. 1999 All Rights Reserved. 28 * Copyright 1997 The Open Group Research Institute. All rights reserved. 29 */ 30 31 package sun.security.krb5.internal.util; 32 33 import java.io.IOException; 34 import java.util.Arrays; 35 import sun.security.krb5.internal.Krb5; 36 import sun.security.util.BitArray; 37 import sun.security.util.DerOutputStream; 38 39 /** 40 * A wrapper class around sun.security.util.BitArray, so that KDCOptions, 41 * TicketFlags and ApOptions in krb5 classes can utilize some functions 42 * in BitArray classes. 43 * 44 * The data type is defined in RFC 4120 as: 45 * 46 * 5.2.8. KerberosFlags 47 * 48 * For several message types, a specific constrained bit string type, 49 * KerberosFlags, is used. 50 * 51 * KerberosFlags ::= BIT STRING (SIZE (32..MAX)) 52 * -- minimum number of bits shall be sent, 53 * -- but no fewer than 32 54 * 55 * @author Yanni Zhang 56 */ 57 public class KerberosFlags { 58 BitArray bits; 59 60 // This constant is used by child classes. 61 protected static final int BITS_PER_UNIT = 8; 62 KerberosFlags(int length)63 public KerberosFlags(int length) throws IllegalArgumentException { 64 bits = new BitArray(length); 65 } 66 KerberosFlags(int length, byte[] a)67 public KerberosFlags(int length, byte[] a) throws IllegalArgumentException { 68 bits = new BitArray(length, a); 69 if (length != Krb5.KRB_FLAGS_MAX+1) { 70 bits = new BitArray(Arrays.copyOf(bits.toBooleanArray(), Krb5.KRB_FLAGS_MAX+1)); 71 } 72 } 73 KerberosFlags(boolean[] bools)74 public KerberosFlags(boolean[] bools) { 75 bits = new BitArray((bools.length==Krb5.KRB_FLAGS_MAX+1)? 76 bools: 77 Arrays.copyOf(bools, Krb5.KRB_FLAGS_MAX+1)); 78 } 79 set(int index, boolean value)80 public void set(int index, boolean value) { 81 bits.set(index, value); 82 } 83 get(int index)84 public boolean get(int index) { 85 return bits.get(index); 86 } 87 toBooleanArray()88 public boolean[] toBooleanArray() { 89 return bits.toBooleanArray(); 90 } 91 92 /** 93 * Writes the encoded data. 94 * 95 * @exception IOException if an I/O error occurs while reading encoded data. 96 * @return an byte array of encoded KDCOptions. 97 */ asn1Encode()98 public byte[] asn1Encode() throws IOException { 99 DerOutputStream out = new DerOutputStream(); 100 out.putUnalignedBitString(bits); 101 return out.toByteArray(); 102 } 103 toString()104 public String toString() { 105 return bits.toString(); 106 } 107 } 108