1 /*
   2  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.security.auth;
  27 
  28 /**
  29  * <p> This class extends <code>NTSid</code>
  30  * and represents a Windows NT user's domain SID.
  31  *
  32  * <p> An NT user only has a domain SID if in fact they are logged
  33  * into an NT domain.  If the user is logged into a workgroup or
  34  * just a standalone configuration, they will NOT have a domain SID.
  35  *
  36  * <p> Principals such as this <code>NTSidDomainPrincipal</code>
  37  * may be associated with a particular <code>Subject</code>
  38  * to augment that <code>Subject</code> with an additional
  39  * identity.  Refer to the <code>Subject</code> class for more information
  40  * on how to achieve this.  Authorization decisions can then be based upon
  41  * the Principals associated with a <code>Subject</code>.
  42  *
  43  * @see java.security.Principal
  44  * @see javax.security.auth.Subject
  45  */
  46 public class NTSidDomainPrincipal extends NTSid {
  47 
  48     private static final long serialVersionUID = 5247810785821650912L;
  49 
  50     /**
  51      * Create an <code>NTSidDomainPrincipal</code> with a Windows NT SID.
  52      *
  53      * <p>
  54      *
  55      * @param name a string version of the Windows NT SID for this
  56      *                  user's domain.<p>
  57      *
  58      * @exception NullPointerException if the <code>name</code>
  59      *                  is <code>null</code>.
  60      */
  61     public NTSidDomainPrincipal(String name) {
  62         super(name);
  63     }
  64 
  65     /**
  66      * Return a string representation of this <code>NTSidDomainPrincipal</code>.
  67      *
  68      * <p>
  69      *
  70      * @return a string representation of this
  71      *          <code>NTSidDomainPrincipal</code>.
  72      */
  73     public String toString() {
  74         java.text.MessageFormat form = new java.text.MessageFormat
  75                 (sun.security.util.ResourcesMgr.getString
  76                         ("NTSidDomainPrincipal.name",
  77                         "sun.security.util.AuthResources"));
  78         Object[] source = {getName()};
  79         return form.format(source);
  80     }
  81 
  82     /**
  83      * Compares the specified Object with this <code>NTSidDomainPrincipal</code>
  84      * for equality.  Returns true if the given object is also a
  85      * <code>NTSidDomainPrincipal</code> and the two NTSidDomainPrincipals
  86      * have the same SID.
  87      *
  88      * <p>
  89      *
  90      * @param o Object to be compared for equality with this
  91      *          <code>NTSidDomainPrincipal</code>.
  92      *
  93      * @return true if the specified Object is equal equal to this
  94      *          <code>NTSidDomainPrincipal</code>.
  95      */
  96     public boolean equals(Object o) {
  97             if (o == null)
  98                 return false;
  99 
 100         if (this == o)
 101             return true;
 102 
 103         if (!(o instanceof NTSidDomainPrincipal))
 104             return false;
 105 
 106         return super.equals(o);
 107     }
 108 }