| /* |
| * Copyright (c) 2000, 2011, 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.PrincipalName; |
| import sun.security.krb5.KrbException; |
| import sun.security.krb5.Asn1Exception; |
| import sun.security.util.*; |
| |
| import java.net.*; |
| import java.util.*; |
| import java.io.IOException; |
| import sun.security.krb5.internal.ccache.CCacheOutputStream; |
| |
| /** |
| * Implements the ASN.1 HostAddresses type. |
| * |
| * <pre>{@code |
| * HostAddresses -- NOTE: subtly different from rfc1510, |
| * -- but has a value mapping and encodes the same |
| * ::= SEQUENCE OF HostAddress |
| * |
| * HostAddress ::= SEQUENCE { |
| * addr-type [0] Int32, |
| * address [1] OCTET STRING |
| * } |
| * }</pre> |
| * |
| * <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 HostAddresses implements Cloneable { |
| private static boolean DEBUG = sun.security.krb5.internal.Krb5.DEBUG; |
| private HostAddress[] addresses = null; |
| private volatile int hashCode = 0; |
| |
| public HostAddresses(HostAddress[] new_addresses) throws IOException { |
| if (new_addresses != null) { |
| addresses = new HostAddress[new_addresses.length]; |
| for (int i = 0; i < new_addresses.length; i++) { |
| if (new_addresses[i] == null) { |
| throw new IOException("Cannot create a HostAddress"); |
| } else { |
| addresses[i] = (HostAddress)new_addresses[i].clone(); |
| } |
| } |
| } |
| } |
| |
| public HostAddresses() throws UnknownHostException { |
| addresses = new HostAddress[1]; |
| addresses[0] = new HostAddress(); |
| } |
| |
| private HostAddresses(int dummy) {} |
| |
| public HostAddresses(PrincipalName serverPrincipal) |
| throws UnknownHostException, KrbException { |
| |
| String[] components = serverPrincipal.getNameStrings(); |
| |
| if (serverPrincipal.getNameType() != PrincipalName.KRB_NT_SRV_HST || |
| components.length < 2) |
| throw new KrbException(Krb5.KRB_ERR_GENERIC, "Bad name"); |
| |
| String host = components[1]; |
| InetAddress[] addr = InetAddress.getAllByName(host); |
| HostAddress[] hAddrs = new HostAddress[addr.length]; |
| |
| for (int i = 0; i < addr.length; i++) { |
| hAddrs[i] = new HostAddress(addr[i]); |
| } |
| |
| addresses = hAddrs; |
| } |
| |
| public Object clone() { |
| HostAddresses new_hostAddresses = new HostAddresses(0); |
| if (addresses != null) { |
| new_hostAddresses.addresses = new HostAddress[addresses.length]; |
| for (int i = 0; i < addresses.length; i++) { |
| new_hostAddresses.addresses[i] = |
| (HostAddress)addresses[i].clone(); |
| } |
| } |
| return new_hostAddresses; |
| } |
| |
| public boolean inList(HostAddress addr) { |
| if (addresses != null) { |
| for (int i = 0; i < addresses.length; i++) |
| if (addresses[i].equals(addr)) |
| return true; |
| } |
| return false; |
| } |
| |
| public int hashCode() { |
| if (hashCode == 0) { |
| int result = 17; |
| if (addresses != null) { |
| for (int i=0; i < addresses.length; i++) { |
| result = 37*result + addresses[i].hashCode(); |
| } |
| } |
| hashCode = result; |
| } |
| return hashCode; |
| |
| } |
| |
| |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (!(obj instanceof HostAddresses)) { |
| return false; |
| } |
| |
| HostAddresses addrs = (HostAddresses)obj; |
| if ((addresses == null && addrs.addresses != null) || |
| (addresses != null && addrs.addresses == null)) |
| return false; |
| if (addresses != null && addrs.addresses != null) { |
| if (addresses.length != addrs.addresses.length) |
| return false; |
| for (int i = 0; i < addresses.length; i++) |
| if (!addresses[i].equals(addrs.addresses[i])) |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * Constructs a new <code>HostAddresses</code> object. |
| * @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 HostAddresses(DerValue encoding) |
| throws Asn1Exception, IOException { |
| Vector<HostAddress> tempAddresses = new Vector<>(); |
| DerValue der = null; |
| while (encoding.getData().available() > 0) { |
| der = encoding.getData().getDerValue(); |
| tempAddresses.addElement(new HostAddress(der)); |
| } |
| if (tempAddresses.size() > 0) { |
| addresses = new HostAddress[tempAddresses.size()]; |
| tempAddresses.copyInto(addresses); |
| } |
| } |
| |
| |
| /** |
| * Encodes a <code>HostAddresses</code> object. |
| * @return byte array of encoded <code>HostAddresses</code> 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(); |
| |
| if (addresses != null && addresses.length > 0) { |
| for (int i = 0; i < addresses.length; i++) |
| bytes.write(addresses[i].asn1Encode()); |
| } |
| temp.write(DerValue.tag_Sequence, bytes); |
| return temp.toByteArray(); |
| } |
| |
| /** |
| * Parse (unmarshal) a <code>HostAddresses</code> 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 if an Asn1Exception occurs. |
| * @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 <code>HostAddresses</code>. |
| */ |
| public static HostAddresses 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 HostAddresses(subDer); |
| } |
| } |
| |
| /** |
| * Writes data field values in <code>HostAddresses</code> in FCC |
| * format to a <code>CCacheOutputStream</code>. |
| * |
| * @param cos a <code>CCacheOutputStream</code> to be written to. |
| * @exception IOException if an I/O exception occurs. |
| * @see sun.security.krb5.internal.ccache.CCacheOutputStream |
| */ |
| |
| public void writeAddrs(CCacheOutputStream cos) throws IOException { |
| if (addresses == null || addresses.length == 0) { |
| cos.write32(0); |
| return; |
| } |
| cos.write32(addresses.length); |
| for (int i = 0; i < addresses.length; i++) { |
| cos.write16(addresses[i].addrType); |
| cos.write32(addresses[i].address.length); |
| cos.write(addresses[i].address, 0, |
| addresses[i].address.length); |
| } |
| } |
| |
| |
| public InetAddress[] getInetAddresses() { |
| |
| if (addresses == null || addresses.length == 0) |
| return null; |
| |
| ArrayList<InetAddress> ipAddrs = new ArrayList<>(addresses.length); |
| |
| for (int i = 0; i < addresses.length; i++) { |
| try { |
| if ((addresses[i].addrType == Krb5.ADDRTYPE_INET) || |
| (addresses[i].addrType == Krb5.ADDRTYPE_INET6)) { |
| ipAddrs.add(addresses[i].getInetAddress()); |
| } |
| } catch (java.net.UnknownHostException e) { |
| // Should not happen since IP address given |
| return null; |
| } |
| } |
| |
| InetAddress[] retVal = new InetAddress[ipAddrs.size()]; |
| return ipAddrs.toArray(retVal); |
| |
| } |
| |
| /** |
| * Returns all the IP addresses of the local host. |
| */ |
| public static HostAddresses getLocalAddresses() throws IOException |
| { |
| Set<InetAddress> all = new LinkedHashSet<>(); |
| try { |
| if (DEBUG) { |
| System.out.println(">>> KrbKdcReq local addresses are:"); |
| } |
| String extra = Config.getInstance().getAll( |
| "libdefaults", "extra_addresses"); |
| if (extra != null) { |
| for (String s: extra.split("\\s+")) { |
| all.add(InetAddress.getByName(s)); |
| if (DEBUG) { |
| System.out.println(" extra_addresses: " |
| + InetAddress.getByName(s)); |
| } |
| } |
| } |
| for (NetworkInterface ni: |
| Collections.list(NetworkInterface.getNetworkInterfaces())) { |
| if (DEBUG) { |
| System.out.println(" NetworkInterface " + ni + ":"); |
| System.out.println(" " |
| + Collections.list(ni.getInetAddresses())); |
| } |
| all.addAll(Collections.list(ni.getInetAddresses())); |
| } |
| return new HostAddresses(all.toArray(new InetAddress[all.size()])); |
| } catch (Exception exc) { |
| throw new IOException(exc.toString()); |
| } |
| } |
| |
| /** |
| * Creates a new HostAddresses instance from the supplied list |
| * of InetAddresses. |
| */ |
| public HostAddresses(InetAddress[] inetAddresses) |
| { |
| if (inetAddresses == null) |
| { |
| addresses = null; |
| return; |
| } |
| |
| addresses = new HostAddress[inetAddresses.length]; |
| for (int i = 0; i < inetAddresses.length; i++) |
| addresses[i] = new HostAddress(inetAddresses[i]); |
| } |
| |
| @Override |
| public String toString() { |
| return Arrays.toString(addresses); |
| } |
| } |