spring security AuthorityGranter 源码
spring security AuthorityGranter 代码
文件路径：/core/src/main/java/org/springframework/security/authentication/jaas/AuthorityGranter.java
/*
* 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
*
* https://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.authentication.jaas;
import java.security.Principal;
import java.util.Set;
/**
* The AuthorityGranter interface is used to map a given principal to role names.
* <p>
* If a Windows NT login module were to be used from JAAS, an AuthrityGranter
* implementation could be created to map a NT Group Principal to a ROLE_USER role for
* instance.
*
* @author Ray Krueger
*/
public interface AuthorityGranter {
/**
* The grant method is called for each principal returned from the LoginContext
* subject. If the AuthorityGranter wishes to grant any authorities, it should return
* a java.util.Set containing the role names it wishes to grant, such as ROLE_USER. If
* the AuthrityGranter does not wish to grant any authorities it should return null.
* <p>
* The set may contain any object as all objects in the returned set will be passed to
* the JaasGrantedAuthority constructor using toString().
* @param principal One of the principals from the
* LoginContext.getSubect().getPrincipals() method.
* @return the role names to grant, or null, meaning no roles should be granted to the
* principal.
*/
Set<String> grant(Principal principal);
}
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