/*
* Copyright (c) 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.
*/
package com.sun.security.auth;
import java.security.Principal;
import javax.naming.InvalidNameException;
import javax.naming.ldap.LdapName;
/**
* A principal identified by a distinguished name as specified by
* <a href="http://ietf.org//rfc/rfc2253.txt">RFC 2253</a>.
*
* <p>
* After successful authentication, a user {@link java.security.Principal}
* can be associated with a particular {@link javax.security.auth.Subject}
* to augment that <code>Subject</code> with an additional identity.
* Authorization decisions can then be based upon the
* <code>Principal</code>s that are associated with a <code>Subject</code>.
*
* <p>
* This class is immutable.
*
* @since 1.6
*/
public final class LdapPrincipal implements Principal, java.io.Serializable {
private static final long serialVersionUID = 6820120005580754861L;
/**
* The principal's string name
*
* @serial
*/
private final String nameString;
/**
* The principal's name
*
* @serial
*/
private final LdapName name;
/**
* Creates an LDAP principal.
*
* @param name The principal's string distinguished name.
* @throws InvalidNameException If a syntax violation is detected.
* @exception NullPointerException If the <code>name</code> is
* <code>null</code>.
*/
public LdapPrincipal(String name) throws InvalidNameException {
if (name == null) {
throw new NullPointerException("null name is illegal");
}
this.name = getLdapName(name);
nameString = name;
}
/**
* Compares this principal to the specified object.
*
* @param object The object to compare this principal against.
* @return true if they are equal; false otherwise.
*/
public boolean equals(Object object) {
if (this == object) {
return true;
}
if (object instanceof LdapPrincipal) {
try {
return
name.equals(getLdapName(((LdapPrincipal)object).getName()));
} catch (InvalidNameException e) {
return false;
}
}
return false;
}
/**
* Computes the hash code for this principal.
*
* @return The principal's hash code.
*/
public int hashCode() {
return name.hashCode();
}
/**
* Returns the name originally used to create this principal.
*
* @return The principal's string name.
*/
public String getName() {
return nameString;
}
/**
* Creates a string representation of this principal's name in the format
* defined by <a href="http://ietf.org/rfc/rfc2253.txt">RFC 2253</a>.
* If the name has zero components an empty string is returned.
*
* @return The principal's string name.
*/
public String toString() {
return name.toString();
}
// Create an LdapName object from a string distinguished name.
private LdapName getLdapName(String name) throws InvalidNameException {
return new LdapName(name);
}
}