/*
* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.security.acls.domain;
import org.springframework.security.acls.model.Sid;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.util.Assert;
/**
* Represents an <code>Authentication.getPrincipal()</code> as a <code>Sid</code>.
* <p>
* This is a basic implementation that simply uses the <code>String</code>-based principal
* for <code>Sid</code> comparison. More complex principal objects may wish to provide an
* alternative <code>Sid</code> implementation that uses some other identifier.
* </p>
*
* @author Ben Alex
*/
public class PrincipalSid implements Sid {
// ~ Instance fields
// ================================================================================================
private final String principal;
// ~ Constructors
// ===================================================================================================
public PrincipalSid(String principal) {
Assert.hasText(principal, "Principal required");
this.principal = principal;
}
public PrincipalSid(Authentication authentication) {
Assert.notNull(authentication, "Authentication required");
Assert.notNull(authentication.getPrincipal(), "Principal required");
if (authentication.getPrincipal() instanceof UserDetails) {
this.principal = ((UserDetails) authentication.getPrincipal()).getUsername();
}
else {
this.principal = authentication.getPrincipal().toString();
}
}
// ~ Methods
// ========================================================================================================
public boolean equals(Object object) {
if ((object == null) || !(object instanceof PrincipalSid)) {
return false;
}
// Delegate to getPrincipal() to perform actual comparison (both should be
// identical)
return ((PrincipalSid) object).getPrincipal().equals(this.getPrincipal());
}
public int hashCode() {
return this.getPrincipal().hashCode();
}
public String getPrincipal() {
return principal;
}
public String toString() {
return "PrincipalSid[" + this.principal + "]";
}
}