Refactoring to support "after invocation" processing.
This commit is contained in:
Ben Alex
parent
03a530b36b
commit
5f6aa9c49e
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@ -0,0 +1,103 @@
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/* Copyright 2004 Acegi Technology Pty Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.sf.acegisecurity;
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/**
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* Reviews the <code>Object</code> returned from a secure object invocation,
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* being able to modify the <code>Object</code> or throw an {@link
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* AccessDeniedException}.
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*
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* <p>
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* Typically used to ensure the principal is permitted to access the domain
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* object instance returned by a service layer bean. Can also be used to
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* mutate the domain object instance so the principal is only able to access
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* authorised bean properties or <code>Collection</code> elements. Often used
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* in conjunction with an {@link net.sf.acegisecurity.acl.AclManager} to
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* obtain the access control list applicable for the domain object instance.
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* </p>
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*
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* <p>
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* Special consideration should be given to using an
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* <code>AfterInvocationManager</code> on bean methods that modify a database.
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* Typically an <code>AfterInvocationManager</code> is used with read-only
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* methods, such as <code>public DomainObject getById(id)</code>. If used with
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* methods that modify a database, a transaction manager should be used to
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* ensure any <code>AccessDeniedException</code> will cause a rollback of the
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* changes made by the transaction.
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* </p>
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*
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* @author Ben Alex
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* @version $Id$
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*/
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public interface AfterInvocationManager {
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//~ Methods ================================================================
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/**
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* Given the details of a secure object invocation including its returned
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* <code>Object</code>, make an access control decision or optionally
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* modify the returned <code>Object</code>.
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*
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* @param authentication the caller that invoked the method
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* @param object the secured object that was called
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* @param config the configuration attributes associated with the secured
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* object that was invoked
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* @param returnedObject the <code>Object</code> that was returned from the
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* secure object invocation
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*
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* @return the <code>Object</code> that will ultimately be returned to the
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* caller (if an implementation does not wish to modify the object
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* to be returned to the caller, the implementation should simply
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* return the same object it was passed by the
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* <code>returnedObject</code> method argument)
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*
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* @throws AccessDeniedException if access is denied
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*/
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public Object decide(Authentication authentication, Object object,
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ConfigAttributeDefinition config, Object returnedObject)
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throws AccessDeniedException;
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/**
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* Indicates whether this <code>AfterInvocationManager</code> is able to
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* process "after invocation" requests presented with the passed
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* <code>ConfigAttribute</code>.
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*
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* <p>
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* This allows the <code>AbstractSecurityInterceptor</code> to check every
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* configuration attribute can be consumed by the configured
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* <code>AccessDecisionManager</code> and/or <code>RunAsManager</code>
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* and/or <code>AfterInvocationManager</code>.
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* </p>
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*
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* @param attribute a configuration attribute that has been configured
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* against the <code>AbstractSecurityInterceptor</code>
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*
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* @return true if this <code>AfterInvocationManager</code> can support the
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* passed configuration attribute
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*/
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public boolean supports(ConfigAttribute attribute);
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/**
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* Indicates whether the <code>AfterInvocationManager</code> implementation
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* is able to provide access control decisions for the indicated secured
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* object type.
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*
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* @param clazz the class that is being queried
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*
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* @return <code>true</code> if the implementation can process the
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* indicated class
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*/
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public boolean supports(Class clazz);
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}
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@ -17,6 +17,7 @@ package net.sf.acegisecurity.intercept;
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import net.sf.acegisecurity.AccessDecisionManager;
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import net.sf.acegisecurity.AccessDeniedException;
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import net.sf.acegisecurity.AfterInvocationManager;
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import net.sf.acegisecurity.Authentication;
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import net.sf.acegisecurity.AuthenticationCredentialsNotFoundException;
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import net.sf.acegisecurity.AuthenticationException;
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@ -74,7 +75,7 @@ import java.util.Set;
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* For an invocation that is secured (there is a
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* <code>ConfigAttributeDefinition</code> for the secure object invocation):
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*
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* <ol>
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* <ol type="a">
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* <li>
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* Authenticate the request against the configured {@link
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* AuthenticationManager}, replacing the <code>Authentication</code> object on
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@ -103,6 +104,11 @@ import java.util.Set;
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* object, return the <code>ContextHolder</code> to the object that existed
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* after the call to <code>AuthenticationManager</code>.
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* </li>
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* <li>
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* If an <code>AfterInvocationManager</code> is defined, invoke the invocation
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* manager and allow it to replace the object due to be returned to the
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* caller.
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* </li>
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* </ol>
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*
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* </li>
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@ -110,7 +116,7 @@ import java.util.Set;
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* For an invocation that is public (there is no
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* <code>ConfigAttributeDefinition</code> for the secure object invocation):
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*
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* <ol>
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* <ol type="a">
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* <li>
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* If the <code>ContextHolder</code> contains a <code>SecureContext</code>, set
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* the <code>isAuthenticated</code> flag on the <code>Authentication</code>
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@ -128,9 +134,9 @@ import java.util.Set;
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*
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* </li>
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* <li>
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* Control again returns to the concrete subclass, which will return to the
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* caller any result or exception that occurred when it proceeded with the
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* execution of the secure object.
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* Control again returns to the concrete subclass, along with the
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* <code>Object</code> that should be returned to the caller. The subclass
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* will then return that result or exception to the original caller.
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* </li>
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* </ol>
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* </p>
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@ -147,6 +153,7 @@ public abstract class AbstractSecurityInterceptor implements InitializingBean,
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//~ Instance fields ========================================================
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private AccessDecisionManager accessDecisionManager;
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private AfterInvocationManager afterInvocationManager;
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private ApplicationContext context;
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private AuthenticationManager authenticationManager;
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private RunAsManager runAsManager = new NullRunAsManager();
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@ -154,11 +161,30 @@ public abstract class AbstractSecurityInterceptor implements InitializingBean,
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//~ Methods ================================================================
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public void setAfterInvocationManager(
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AfterInvocationManager afterInvocationManager) {
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this.afterInvocationManager = afterInvocationManager;
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}
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public AfterInvocationManager getAfterInvocationManager() {
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return afterInvocationManager;
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}
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public void setApplicationContext(ApplicationContext applicationContext)
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throws BeansException {
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this.context = applicationContext;
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}
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/**
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* Indicates the type of secure objects the subclass will be presenting to
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* the abstract parent for processing. This is used to ensure
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* collaborators wired to the <code>AbstractSecurityInterceptor</code> all
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* support the indicated secure object class.
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*
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* @return the type of secure object the subclass provides services for
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*/
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public abstract Class getSecureObjectClass();
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public abstract ObjectDefinitionSource obtainObjectDefinitionSource();
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public void setAccessDecisionManager(
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@ -223,51 +249,116 @@ public abstract class AbstractSecurityInterceptor implements InitializingBean,
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logger.warn(
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"Could not validate configuration attributes as the MethodDefinitionSource did not return a ConfigAttributeDefinition Iterator");
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}
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} else {
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Set set = new HashSet();
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return;
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}
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while (iter.hasNext()) {
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ConfigAttributeDefinition def = (ConfigAttributeDefinition) iter
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.next();
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Iterator attributes = def.getConfigAttributes();
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Set set = new HashSet();
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while (attributes.hasNext()) {
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ConfigAttribute attr = (ConfigAttribute) attributes
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.next();
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while (iter.hasNext()) {
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ConfigAttributeDefinition def = (ConfigAttributeDefinition) iter
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.next();
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Iterator attributes = def.getConfigAttributes();
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while (attributes.hasNext()) {
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ConfigAttribute attr = (ConfigAttribute) attributes.next();
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if (!this.runAsManager.supports(attr)
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&& !this.accessDecisionManager.supports(attr)) {
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set.add(attr);
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if (!this.runAsManager.supports(attr)
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&& !this.accessDecisionManager.supports(attr)
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&& ((this.afterInvocationManager == null)
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|| !this.afterInvocationManager.supports(attr))) {
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set.add(attr);
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}
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}
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}
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}
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if (set.size() == 0) {
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if (logger.isInfoEnabled()) {
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logger.info("Validated configuration attributes");
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if (set.size() == 0) {
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if (logger.isInfoEnabled()) {
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logger.info("Validated configuration attributes");
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}
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} else {
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throw new IllegalArgumentException(
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"Unsupported configuration attributes: "
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+ set.toString());
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}
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} else {
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throw new IllegalArgumentException(
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"Unsupported configuration attributes: " + set.toString());
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}
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}
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if (getSecureObjectClass() == null) {
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throw new IllegalArgumentException(
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"Subclass must provide a non-null response to getSecureObjectClass()");
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}
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if (!this.accessDecisionManager.supports(getSecureObjectClass())) {
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throw new IllegalArgumentException(
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"AccessDecisionManager does not support secure object class: "
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+ getSecureObjectClass());
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}
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boolean result = this.obtainObjectDefinitionSource().supports(getSecureObjectClass());
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if (!result) {
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throw new IllegalArgumentException(
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"ObjectDefinitionSource does not support secure object class: "
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+ getSecureObjectClass());
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}
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if (!this.runAsManager.supports(getSecureObjectClass())) {
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throw new IllegalArgumentException(
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"RunAsManager does not support secure object class: "
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+ getSecureObjectClass());
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}
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if ((this.afterInvocationManager != null)
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&& !this.afterInvocationManager.supports(getSecureObjectClass())) {
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throw new IllegalArgumentException(
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"AfterInvocationManager does not support secure object class: "
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+ getSecureObjectClass());
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}
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if (!this.obtainObjectDefinitionSource().supports(getSecureObjectClass())) {
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throw new IllegalArgumentException(
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"ObjectDefinitionSource does not support secure object class: "
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+ getSecureObjectClass());
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}
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}
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protected void afterInvocation(InterceptorStatusToken token) {
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/**
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* Completes the work of the <code>AbstractSecurityInterceptor</code> after
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* the secure object invocation has been complete
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*
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* @param token as returned by the {@link #beforeInvocation(Object)}}
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* method
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* @param returnedObject any object returned from the secure object
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* invocation (may be<code>null</code>)
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*
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* @return the object the secure object invocation should ultimately return
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* to its caller (may be <code>null</code>)
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*/
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protected Object afterInvocation(InterceptorStatusToken token,
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Object returnedObject) {
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if (token == null) {
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return;
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// public object
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return returnedObject;
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}
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if (logger.isDebugEnabled()) {
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logger.debug("Reverting to original Authentication: "
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+ token.getAuthenticated().toString());
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if (token.isContextHolderRefreshRequired()) {
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if (logger.isDebugEnabled()) {
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logger.debug("Reverting to original Authentication: "
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+ token.getAuthentication().toString());
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}
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SecureContext secureContext = (SecureContext) ContextHolder
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.getContext();
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secureContext.setAuthentication(token.getAuthentication());
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ContextHolder.setContext(secureContext);
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}
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SecureContext secureContext = (SecureContext) ContextHolder.getContext();
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secureContext.setAuthentication(token.getAuthenticated());
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ContextHolder.setContext(secureContext);
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if (afterInvocationManager != null) {
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returnedObject = afterInvocationManager.decide(token
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.getAuthentication(), token.getSecureObject(),
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token.getAttr(), returnedObject);
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}
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return returnedObject;
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}
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protected InterceptorStatusToken beforeInvocation(Object object) {
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@ -275,10 +366,11 @@ public abstract class AbstractSecurityInterceptor implements InitializingBean,
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throw new IllegalArgumentException("Object was null");
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}
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if (!this.obtainObjectDefinitionSource().supports(object.getClass())) {
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if (!getSecureObjectClass().isAssignableFrom(object.getClass())) {
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throw new IllegalArgumentException(
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"ObjectDefinitionSource does not support objects of type "
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+ object.getClass());
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"Security invocation attempted for object " + object
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+ " but AbstractSecurityInterceptor only configured to support secure objects of type: "
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+ getSecureObjectClass());
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}
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ConfigAttributeDefinition attr = this.obtainObjectDefinitionSource()
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@ -365,7 +457,8 @@ public abstract class AbstractSecurityInterceptor implements InitializingBean,
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"RunAsManager did not change Authentication object");
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}
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return null; // no further work post-invocation
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return new InterceptorStatusToken(authenticated, false, attr,
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object); // no further work post-invocation
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} else {
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if (logger.isDebugEnabled()) {
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logger.debug("Switching to RunAs Authentication: "
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@ -375,10 +468,8 @@ public abstract class AbstractSecurityInterceptor implements InitializingBean,
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context.setAuthentication(runAs);
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ContextHolder.setContext((Context) context);
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InterceptorStatusToken token = new InterceptorStatusToken();
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token.setAuthenticated(authenticated);
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return token; // revert to token.Authenticated post-invocation
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return new InterceptorStatusToken(authenticated, true, attr,
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object); // revert to token.Authenticated post-invocation
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}
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} else {
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if (logger.isDebugEnabled()) {
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@ -16,6 +16,7 @@
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package net.sf.acegisecurity.intercept;
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import net.sf.acegisecurity.Authentication;
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import net.sf.acegisecurity.ConfigAttributeDefinition;
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/**
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@ -23,14 +24,9 @@ import net.sf.acegisecurity.Authentication;
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*
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* <P>
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* This class reflects the status of the security interception, so that the
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* final call to <code>AbstractSecurityInterceptor</code> can tidy up
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* correctly.
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* </p>
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*
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* <P>
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* Whilst this class currently only wraps a single object, it has been modelled
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* as a class so that future changes to the operation of
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* <code>AbstractSecurityInterceptor</code> are abstracted from subclasses.
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* final call to {@link
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* net.sf.acegisecurity.intercept.AbstractSecurityInterceptor#afterInvocation(InterceptorStatusToken,
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* Object)} can tidy up correctly.
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* </p>
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*
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* @author Ben Alex
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@ -39,15 +35,41 @@ import net.sf.acegisecurity.Authentication;
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public class InterceptorStatusToken {
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//~ Instance fields ========================================================
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private Authentication authenticated;
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private Authentication authentication;
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private ConfigAttributeDefinition attr;
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private Object secureObject;
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private boolean contextHolderRefreshRequired;
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//~ Constructors ===========================================================
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public InterceptorStatusToken(Authentication authentication,
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boolean contextHolderRefreshRequired, ConfigAttributeDefinition attr,
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Object secureObject) {
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this.authentication = authentication;
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this.contextHolderRefreshRequired = contextHolderRefreshRequired;
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this.attr = attr;
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this.secureObject = secureObject;
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}
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protected InterceptorStatusToken() {
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throw new IllegalArgumentException("Cannot use default constructor");
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}
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//~ Methods ================================================================
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public void setAuthenticated(Authentication authenticated) {
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this.authenticated = authenticated;
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public ConfigAttributeDefinition getAttr() {
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return attr;
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}
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public Authentication getAuthenticated() {
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return authenticated;
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public Authentication getAuthentication() {
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return authentication;
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}
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public boolean isContextHolderRefreshRequired() {
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return contextHolderRefreshRequired;
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}
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public Object getSecureObject() {
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return secureObject;
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}
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}
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|
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@ -58,18 +58,8 @@ public class MethodSecurityInterceptor extends AbstractSecurityInterceptor
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return this.objectDefinitionSource;
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}
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public void afterPropertiesSet() {
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super.afterPropertiesSet();
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if (!this.getAccessDecisionManager().supports(MethodInvocation.class)) {
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throw new IllegalArgumentException(
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"AccessDecisionManager does not support MethodInvocation");
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}
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if (!this.getRunAsManager().supports(MethodInvocation.class)) {
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throw new IllegalArgumentException(
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"RunAsManager does not support MethodInvocation");
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}
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public Class getSecureObjectClass() {
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return MethodInvocation.class;
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}
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/**
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@ -83,13 +73,13 @@ public class MethodSecurityInterceptor extends AbstractSecurityInterceptor
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* @throws Throwable if any error occurs
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*/
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public Object invoke(MethodInvocation mi) throws Throwable {
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Object result;
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Object result = null;
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InterceptorStatusToken token = super.beforeInvocation(mi);
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try {
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result = mi.proceed();
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} finally {
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super.afterInvocation(token);
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result = super.afterInvocation(token, result);
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}
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||||
return result;
|
||||
|
|
|
|||
|
|
@ -35,7 +35,7 @@ import org.aspectj.lang.JoinPoint;
|
|||
* </p>
|
||||
*
|
||||
* <p>
|
||||
* The secure object type is <code>org.aspectj.lang.JointPoint</code>, which is
|
||||
* The secure object type is <code>org.aspectj.lang.JoinPoint</code>, which is
|
||||
* passed from the relevant <code>around()</code> advice. The
|
||||
* <code>around()</code> advice also passes an anonymous implementation of
|
||||
* {@link AspectJCallback} which contains the call for AspectJ to continue
|
||||
|
|
@ -64,18 +64,8 @@ public class AspectJSecurityInterceptor extends AbstractSecurityInterceptor {
|
|||
return this.objectDefinitionSource;
|
||||
}
|
||||
|
||||
public void afterPropertiesSet() {
|
||||
super.afterPropertiesSet();
|
||||
|
||||
if (!this.getAccessDecisionManager().supports(JoinPoint.class)) {
|
||||
throw new IllegalArgumentException(
|
||||
"AccessDecisionManager does not support JointPoint");
|
||||
}
|
||||
|
||||
if (!this.getRunAsManager().supports(JoinPoint.class)) {
|
||||
throw new IllegalArgumentException(
|
||||
"RunAsManager does not support JointPoint");
|
||||
}
|
||||
public Class getSecureObjectClass() {
|
||||
return JoinPoint.class;
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -91,13 +81,13 @@ public class AspectJSecurityInterceptor extends AbstractSecurityInterceptor {
|
|||
* @return The returned value from the method invocation
|
||||
*/
|
||||
public Object invoke(JoinPoint jp, AspectJCallback advisorProceed) {
|
||||
Object result;
|
||||
Object result = null;
|
||||
InterceptorStatusToken token = super.beforeInvocation(jp);
|
||||
|
||||
try {
|
||||
result = advisorProceed.proceedWithObject();
|
||||
} finally {
|
||||
super.afterInvocation(token);
|
||||
result = super.afterInvocation(token, result);
|
||||
}
|
||||
|
||||
return result;
|
||||
|
|
|
|||
|
|
@ -59,18 +59,8 @@ public class FilterSecurityInterceptor extends AbstractSecurityInterceptor {
|
|||
return this.objectDefinitionSource;
|
||||
}
|
||||
|
||||
public void afterPropertiesSet() {
|
||||
super.afterPropertiesSet();
|
||||
|
||||
if (!this.getAccessDecisionManager().supports(FilterInvocation.class)) {
|
||||
throw new IllegalArgumentException(
|
||||
"AccessDecisionManager does not support FilterInvocation");
|
||||
}
|
||||
|
||||
if (!this.getRunAsManager().supports(FilterInvocation.class)) {
|
||||
throw new IllegalArgumentException(
|
||||
"RunAsManager does not support FilterInvocation");
|
||||
}
|
||||
public Class getSecureObjectClass() {
|
||||
return FilterInvocation.class;
|
||||
}
|
||||
|
||||
public void invoke(FilterInvocation fi) throws Throwable {
|
||||
|
|
@ -79,7 +69,7 @@ public class FilterSecurityInterceptor extends AbstractSecurityInterceptor {
|
|||
try {
|
||||
fi.getChain().doFilter(fi.getRequest(), fi.getResponse());
|
||||
} finally {
|
||||
super.afterInvocation(token);
|
||||
super.afterInvocation(token, null);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue