0N/A/*
2362N/A * Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
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2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
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0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
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0N/A */
0N/A
0N/A/*
0N/A *
0N/A * (C) Copyright IBM Corp. 1999 All Rights Reserved.
0N/A * Copyright 1997 The Open Group Research Institute. All rights reserved.
0N/A */
0N/A
0N/Apackage sun.security.krb5.internal.util;
0N/A
0N/Aimport java.io.BufferedInputStream;
0N/Aimport java.io.InputStream;
0N/Aimport java.io.IOException;
0N/A
0N/A/**
0N/A * This class implements a buffered input stream. It provides methods to read a chunck
0N/A * of data from underlying data stream.
0N/A *
0N/A * @author Yanni Zhang
0N/A *
0N/A */
0N/Apublic class KrbDataInputStream extends BufferedInputStream{
0N/A private boolean bigEndian = true;
0N/A
0N/A public void setNativeByteOrder() {
0N/A if (java.nio.ByteOrder.nativeOrder().
0N/A equals(java.nio.ByteOrder.BIG_ENDIAN)) {
0N/A bigEndian = true;
0N/A } else {
0N/A bigEndian = false;
0N/A }
0N/A }
0N/A public KrbDataInputStream(InputStream is){
0N/A super(is);
0N/A }
0N/A /**
0N/A * Reads up to the specific number of bytes from this input stream.
0N/A * @param num the number of bytes to be read.
0N/A * @return the int value of this byte array.
0N/A * @exception IOException.
0N/A */
0N/A public int read(int num) throws IOException{
0N/A byte[] bytes = new byte[num];
0N/A read(bytes, 0, num);
0N/A int result = 0;
0N/A for (int i = 0; i < num; i++) {
0N/A if (bigEndian) {
0N/A result |= (bytes[i] & 0xff) << (num - i - 1) * 8;
0N/A } else {
0N/A result |= (bytes[i] & 0xff) << i * 8;
0N/A }
0N/A }
0N/A return result;
0N/A }
0N/A
0N/A public int readVersion() throws IOException {
0N/A // always read in big-endian mode
0N/A int result = (read() & 0xff) << 8;
0N/A return result | (read() & 0xff);
0N/A }
0N/A}