org.acegisecurity.RunAsManager Maven / Gradle / Ivy
/* Copyright 2004, 2005 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;
/**
* Creates a new temporary {@link Authentication} object for the current secure
* object invocation only.
*
*
* This interface permits implementations to replace the
* Authentication object that applies to the current secure
* object invocation only. The {@link
* org.acegisecurity.intercept.AbstractSecurityInterceptor} will replace
* the Authentication object held in the
* {@link org.acegisecurity.context.SecurityContext SecurityContext}
* for the duration of the secure object callback only, returning it to
* the original Authentication object when the callback ends.
*
*
*
* This is provided so that systems with two layers of objects can be
* established. One layer is public facing and has normal secure methods with
* the granted authorities expected to be held by external callers. The other
* layer is private, and is only expected to be called by objects within the
* public facing layer. The objects in this private layer still need security
* (otherwise they would be public methods) and they also need security in
* such a manner that prevents them being called directly by external callers.
* The objects in the private layer would be configured to require granted
* authorities never granted to external callers. The
* RunAsManager interface provides a mechanism to elevate
* security in this manner.
*
*
*
* It is expected implementations will provide a corresponding concrete
* Authentication and AuthenticationProvider so that
* the replacement Authentication object can be authenticated.
* Some form of security will need to be implemented to ensure the
* AuthenticationProvider only accepts
* Authentication objects created by an authorized concrete
* implementation of RunAsManager.
*
*
* @author Ben Alex
* @version $Id: RunAsManager.java,v 1.7 2005/11/17 00:55:49 benalex Exp $
*/
public interface RunAsManager {
//~ Methods ================================================================
/**
* Returns a replacement Authentication object for the current
* secure object invocation, or null if replacement not
* required.
*
* @param authentication the caller invoking the secure object
* @param object the secured object being called
* @param config the configuration attributes associated with the secure
* object being invoked
*
* @return a replacement object to be used for duration of the secure
* object invocation, or null if the
* Authentication should be left as is
*/
public Authentication buildRunAs(Authentication authentication,
Object object, ConfigAttributeDefinition config);
/**
* Indicates whether this RunAsManager is able to process the
* passed ConfigAttribute.
*
*
* This allows the AbstractSecurityInterceptor to check every
* configuration attribute can be consumed by the configured
* AccessDecisionManager and/or RunAsManager
* and/or AfterInvocationManager.
*
*
* @param attribute a configuration attribute that has been configured
* against the AbstractSecurityInterceptor
*
* @return true if this RunAsManager can support
* the passed configuration attribute
*/
public boolean supports(ConfigAttribute attribute);
/**
* Indicates whether the RunAsManager implementation is able
* to provide run-as replacement for the indicated secure object type.
*
* @param clazz the class that is being queried
*
* @return true if the implementation can process the indicated class
*/
public boolean supports(Class clazz);
}