org.acegisecurity.providers.dao.salt.ReflectionSaltSource Maven / Gradle / Ivy
/* 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.acegisecurity.providers.dao.salt;
import org.acegisecurity.AuthenticationServiceException;
import org.acegisecurity.providers.dao.SaltSource;
import org.acegisecurity.userdetails.UserDetails;
import org.springframework.beans.factory.InitializingBean;
import java.lang.reflect.Method;
/**
* Obtains a salt from a specified property of the {@link org.acegisecurity.userdetails.User} object.This allows
* you to subclass User
and provide an additional bean getter for a salt. You should use a synthetic
* value that does not change, such as a database primary key. Do not use username
if it is likely to
* change.
*
* @author Ben Alex
* @version $Id: ReflectionSaltSource.java 1519 2006-05-29 15:06:32Z benalex $
*/
public class ReflectionSaltSource implements SaltSource, InitializingBean {
//~ Instance fields ================================================================================================
private String userPropertyToUse;
//~ Methods ========================================================================================================
public void afterPropertiesSet() throws Exception {
if ((this.getUserPropertyToUse() == null) || "".equals(this.getUserPropertyToUse())) {
throw new IllegalArgumentException("A userPropertyToUse must be set");
}
}
/**
* Performs reflection on the passed User
to obtain the salt.The property identified by
* userPropertyToUse
must be available from the passed User
object. If it is not
* available, an {@link AuthenticationServiceException} will be thrown.
*
* @param user which contains the method identified by userPropertyToUse
*
* @return the result of invoking user.userPropertyToUse()
*
* @throws AuthenticationServiceException if reflection fails
*/
public Object getSalt(UserDetails user) {
try {
Method reflectionMethod = user.getClass().getMethod(this.userPropertyToUse, new Class[] {});
return reflectionMethod.invoke(user, new Object[] {});
} catch (Exception exception) {
throw new AuthenticationServiceException(exception.getMessage(), exception);
}
}
public String getUserPropertyToUse() {
return userPropertyToUse;
}
/**
* The method name to call to obtain the salt. If your UserDetails
contains a
* UserDetails.getSalt()
method, you should set this property to getSalt
.
*
* @param userPropertyToUse the name of the getter to call to obtain the salt from the
* UserDetails
*/
public void setUserPropertyToUse(String userPropertyToUse) {
this.userPropertyToUse = userPropertyToUse;
}
}
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