2 * Copyright (c) 2001-2007 Sun Microsystems, Inc. All rights reserved.
4 * The Sun Project JXTA(TM) Software License
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
16 * 3. The end-user documentation included with the redistribution, if any, must
17 * include the following acknowledgment: "This product includes software
18 * developed by Sun Microsystems, Inc. for JXTA(TM) technology."
19 * Alternately, this acknowledgment may appear in the software itself, if
20 * and wherever such third-party acknowledgments normally appear.
22 * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
23 * not be used to endorse or promote products derived from this software
24 * without prior written permission. For written permission, please contact
25 * Project JXTA at http://www.jxta.org.
27 * 5. Products derived from this software may not be called "JXTA", nor may
28 * "JXTA" appear in their name, without prior written permission of Sun.
30 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
31 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
32 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SUN
33 * MICROSYSTEMS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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35 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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39 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41 * JXTA is a registered trademark of Sun Microsystems, Inc. in the United
42 * States and other countries.
44 * Please see the license information page at :
45 * <http://www.jxta.org/project/www/license.html> for instructions on use of
46 * the license in source files.
48 * ====================================================================
50 * This software consists of voluntary contributions made by many individuals
51 * on behalf of Project JXTA. For more information on Project JXTA, please see
52 * http://www.jxta.org.
54 * This license is based on the BSD license adopted by the Apache Foundation.
57 package net.jxta.impl.id.CBID;
60 import net.jxta.impl.id.UUID.IDBytes;
61 import net.jxta.impl.id.UUID.UUID;
62 import net.jxta.impl.id.UUID.UUIDFactory;
64 import java.security.MessageDigest;
65 import java.security.NoSuchAlgorithmException;
66 import java.security.ProviderException;
67 import java.util.logging.Logger;
71 * An implementation of the {@link net.jxta.peer.PeerID} ID Type.
73 public class PeerID extends net.jxta.impl.id.UUID.PeerID {
78 private static final transient Logger LOG = Logger.getLogger(PeerID.class.getName());
81 * Used only internally.
88 * See {@link net.jxta.id.IDFactory.Instantiator#newPeerID(net.jxta.peergroup.PeerGroupID)}.
90 * @param groupID the PeerGroupID
92 public PeerID(PeerGroupID groupID) {
93 this(groupID.getUUID(), UUIDFactory.newUUID());
97 * Intializes contents from provided ID.
99 * @param id the ID data
101 protected PeerID(IDBytes id) {
106 * See {@link net.jxta.id.IDFactory.Instantiator#newPeerID(net.jxta.peergroup.PeerGroupID,byte[])}.
108 * @param groupID the PeerGroupID
109 * @param seed the seed
111 public PeerID(PeerGroupID groupID, byte[] seed) {
114 UUID groupUUID = groupID.getUUID();
116 id.longIntoBytes(PeerID.groupIdOffset, groupUUID.getMostSignificantBits());
117 id.longIntoBytes(PeerID.groupIdOffset + 8, groupUUID.getLeastSignificantBits());
119 MessageDigest digester = null;
122 digester = MessageDigest.getInstance("SHA-1");
123 } catch (NoSuchAlgorithmException caught) {
127 if (digester == null) {
128 throw new ProviderException("SHA1 digest algorithm not found");
131 byte[] digest = digester.digest(seed);
133 // we keep only the 128 most significant bits
134 byte[] buf16 = new byte[16];
136 System.arraycopy(digest, 0, buf16, 0, 16);
138 UUID peerCBID = new UUID(buf16);
140 id.longIntoBytes(PeerID.idOffset, peerCBID.getMostSignificantBits());
141 id.longIntoBytes(PeerID.idOffset + 8, peerCBID.getLeastSignificantBits());
145 * Creates a PeerID. A PeerGroupID is provided
147 * @param groupUUID the group to which this will belong.
148 * @param peerUUID id of this peer
150 protected PeerID(UUID groupUUID, UUID peerUUID) {
151 super(groupUUID, peerUUID);
158 public String getIDFormat() {
159 return IDFormat.INSTANTIATOR.getSupportedIDFormat();
166 public net.jxta.id.ID getPeerGroupID() {
167 UUID groupCBID = new UUID(id.bytesIntoLong(PeerID.groupIdOffset), id.bytesIntoLong(PeerID.groupIdOffset + 8));
169 PeerGroupID groupID = new PeerGroupID(groupCBID);
171 // convert to the generic world PGID as necessary
172 return IDFormat.translateToWellKnown(groupID);
176 * Returns the UUID associated with this PeerID.
178 * @return The UUID associated with this PeerID.
180 public UUID getUUID() {
181 return new UUID(id.bytesIntoLong(PeerID.idOffset), id.bytesIntoLong(PeerID.idOffset + 8));