| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.kerby.kerberos.kerb.spec.base; |
| |
| import org.apache.kerby.asn1.type.Asn1BitString; |
| import org.apache.kerby.kerberos.kerb.spec.KrbEnum; |
| |
| import java.io.IOException; |
| |
| /** |
| KrbFlags ::= BIT STRING (SIZE (32..MAX)) |
| -- minimum number of bits shall be sent, |
| -- but no fewer than 32 |
| */ |
| public class KrbFlags extends Asn1BitString { |
| private static final int MAX_SIZE = 32; |
| private static final int MASK; |
| |
| static { |
| int maskBuilder = 0; |
| for (int i = 0; i < MAX_SIZE; i++) { |
| maskBuilder = maskBuilder << 1; |
| maskBuilder |= 0x00000001; |
| } |
| MASK = maskBuilder; |
| } |
| |
| private int flags; |
| |
| public KrbFlags() { |
| this(0); |
| } |
| |
| public KrbFlags(int value) { |
| super(); |
| setFlags(value); |
| } |
| |
| public void setFlags(int flags) { |
| this.flags = flags; |
| flags2Value(); |
| } |
| |
| public int getFlags() { |
| return flags; |
| } |
| |
| public boolean isFlagSet(int flag) { |
| return (flags & flag) != 0; |
| } |
| |
| public void setFlag(int flag) { |
| setFlags(flags | flag); |
| } |
| |
| public void clearFlag(int flag) { |
| setFlags(flags & (MASK ^ flag)); |
| } |
| |
| public void clear() { |
| setFlags(0); |
| } |
| |
| public boolean isFlagSet(KrbEnum flag) { |
| return isFlagSet(flag.getValue()); |
| } |
| |
| public void setFlag(KrbEnum flag) { |
| setFlag(flag.getValue()); |
| } |
| |
| public void setFlag(KrbEnum flag, boolean isSet) { |
| if (isSet) { |
| setFlag(flag.getValue()); |
| } else { |
| clearFlag(flag.getValue()); |
| } |
| } |
| |
| public void clearFlag(KrbEnum flag) { |
| clearFlag(flag.getValue()); |
| } |
| |
| private void flags2Value() { |
| byte[] bytes = new byte[4]; |
| bytes[0] = (byte) (flags >> 24); |
| bytes[1] = (byte) ((flags >> 16) & 0xFF); |
| bytes[2] = (byte) ((flags >> 8) & 0xFF); |
| bytes[3] = (byte) (flags & 0xFF); |
| |
| setValue(bytes); |
| } |
| |
| @Override |
| protected void toValue() throws IOException { |
| |
| super.toValue(); |
| |
| if (getPadding() != 0 || getValue().length != 4) { |
| throw new IOException("Bad bitstring decoded as invalid krb flags"); |
| } |
| |
| byte[] valueBytes = getValue(); |
| flags = ((valueBytes[0] & 0xFF) << 24) | ((valueBytes[1] & 0xFF) << 16) |
| | ((valueBytes[2] & 0xFF) << 8) | (0xFF & valueBytes[3]); |
| } |
| } |