| /* |
| * Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved. |
| * 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.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.krb5.Config; |
| import sun.security.krb5.Asn1Exception; |
| import sun.security.util.*; |
| import java.net.InetAddress; |
| import java.net.Inet4Address; |
| import java.net.Inet6Address; |
| import java.net.UnknownHostException; |
| import java.io.IOException; |
| |
| /** |
| * Implements the ASN.1 HostAddress type. |
| * |
| * <xmp> |
| * HostAddress ::= SEQUENCE { |
| * addr-type [0] Int32, |
| * address [1] OCTET STRING |
| * } |
| * </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 HostAddress implements Cloneable { |
| int addrType; |
| byte[] address = null; |
| |
| private static InetAddress localInetAddress; //caches local inet address |
| private static final boolean DEBUG = sun.security.krb5.internal.Krb5.DEBUG; |
| private volatile int hashCode = 0; |
| |
| private HostAddress(int dummy) {} |
| |
| public Object clone() { |
| HostAddress new_hostAddress = new HostAddress(0); |
| new_hostAddress.addrType = addrType; |
| if (address != null) { |
| new_hostAddress.address = address.clone(); |
| } |
| return new_hostAddress; |
| } |
| |
| |
| public int hashCode() { |
| if (hashCode == 0) { |
| int result = 17; |
| result = 37*result + addrType; |
| if (address != null) { |
| for (int i=0; i < address.length; i++) { |
| result = 37*result + address[i]; |
| } |
| } |
| hashCode = result; |
| } |
| return hashCode; |
| |
| } |
| |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (!(obj instanceof HostAddress)) { |
| return false; |
| } |
| |
| HostAddress h = (HostAddress)obj; |
| if (addrType != h.addrType || |
| (address != null && h.address == null) || |
| (address == null && h.address != null)) |
| return false; |
| if (address != null && h.address != null) { |
| if (address.length != h.address.length) |
| return false; |
| for (int i = 0; i < address.length; i++) |
| if (address[i] != h.address[i]) |
| return false; |
| } |
| return true; |
| } |
| |
| private static synchronized InetAddress getLocalInetAddress() |
| throws UnknownHostException { |
| |
| if (localInetAddress == null) { |
| localInetAddress = InetAddress.getLocalHost(); |
| } |
| if (localInetAddress == null) { |
| throw new UnknownHostException(); |
| } |
| return (localInetAddress); |
| } |
| |
| /** |
| * Gets the InetAddress of this HostAddress. |
| * @return the IP address for this specified host. |
| * @exception if no IP address for the host could be found. |
| * |
| */ |
| public InetAddress getInetAddress() throws UnknownHostException { |
| // the type of internet addresses is 2. |
| if (addrType == Krb5.ADDRTYPE_INET || |
| addrType == Krb5.ADDRTYPE_INET6) { |
| return (InetAddress.getByAddress(address)); |
| } else { |
| // if it is other type (ISO address, XNS address, etc) |
| return null; |
| } |
| } |
| |
| private int getAddrType(InetAddress inetAddress) { |
| int addressType = 0; |
| if (inetAddress instanceof Inet4Address) |
| addressType = Krb5.ADDRTYPE_INET; |
| else if (inetAddress instanceof Inet6Address) |
| addressType = Krb5.ADDRTYPE_INET6; |
| return (addressType); |
| } |
| |
| // implicit default not in Config.java |
| public HostAddress() throws UnknownHostException { |
| InetAddress inetAddress = getLocalInetAddress(); |
| addrType = getAddrType(inetAddress); |
| address = inetAddress.getAddress(); |
| } |
| |
| /** |
| * Creates a HostAddress from the specified address and address type. |
| * |
| * @param new_addrType the value of the address type which matches the defined |
| * address family constants in the Berkeley Standard |
| * Distributions of Unix. |
| * @param new_address network address. |
| * @exception KrbApErrException if address type and address length do not match defined value. |
| * |
| */ |
| public HostAddress(int new_addrType, byte[] new_address) |
| throws KrbApErrException, UnknownHostException { |
| switch(new_addrType) { |
| case Krb5.ADDRTYPE_INET: //Internet address |
| if (new_address.length != 4) |
| throw new KrbApErrException(0, "Invalid Internet address"); |
| break; |
| case Krb5.ADDRTYPE_CHAOS: |
| if (new_address.length != 2) //CHAOSnet address |
| throw new KrbApErrException(0, "Invalid CHAOSnet address"); |
| break; |
| case Krb5.ADDRTYPE_ISO: // ISO address |
| break; |
| case Krb5.ADDRTYPE_IPX: // XNS address |
| if (new_address.length != 6) |
| throw new KrbApErrException(0, "Invalid XNS address"); |
| break; |
| case Krb5.ADDRTYPE_APPLETALK: //AppleTalk DDP address |
| if (new_address.length != 3) |
| throw new KrbApErrException(0, "Invalid DDP address"); |
| break; |
| case Krb5.ADDRTYPE_DECNET: //DECnet Phase IV address |
| if (new_address.length != 2) |
| throw new KrbApErrException(0, "Invalid DECnet Phase IV address"); |
| break; |
| case Krb5.ADDRTYPE_INET6: //Internet IPv6 address |
| if (new_address.length != 16) |
| throw new KrbApErrException(0, "Invalid Internet IPv6 address"); |
| break; |
| } |
| |
| addrType = new_addrType; |
| if (new_address != null) { |
| address = new_address.clone(); |
| } |
| if (DEBUG) { |
| if (addrType == Krb5.ADDRTYPE_INET || |
| addrType == Krb5.ADDRTYPE_INET6) { |
| System.out.println("Host address is " + |
| InetAddress.getByAddress(address)); |
| } |
| } |
| } |
| |
| public HostAddress(InetAddress inetAddress) { |
| addrType = getAddrType(inetAddress); |
| address = inetAddress.getAddress(); |
| } |
| |
| /** |
| * Constructs a host address from a single DER-encoded value. |
| * @param encoding a single DER-encoded value. |
| * @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 HostAddress(DerValue encoding) throws Asn1Exception, IOException { |
| DerValue der = encoding.getData().getDerValue(); |
| if ((der.getTag() & (byte)0x1F) == (byte)0x00) { |
| addrType = der.getData().getBigInteger().intValue(); |
| } |
| else |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| der = encoding.getData().getDerValue(); |
| if ((der.getTag() & (byte)0x1F) == (byte)0x01) { |
| address = der.getData().getOctetString(); |
| } |
| else |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| if (encoding.getData().available() > 0) |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| } |
| |
| /** |
| * Encodes a HostAddress object. |
| * @return a byte array of encoded HostAddress 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(); |
| DerOutputStream temp = new DerOutputStream(); |
| temp.putInteger(this.addrType); |
| bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), temp); |
| temp = new DerOutputStream(); |
| temp.putOctetString(address); |
| bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), temp); |
| temp = new DerOutputStream(); |
| temp.write(DerValue.tag_Sequence, bytes); |
| return temp.toByteArray(); |
| } |
| |
| /** |
| * Parses (unmarshal) a host address 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. |
| * @exception IOException if an I/O error occurs while reading encoded data. |
| * @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 HostAddress. |
| * |
| */ |
| public static HostAddress 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 HostAddress(subDer); |
| } |
| } |
| |
| } |
