org.springframework.security.access.vote.UnanimousBased 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
*
* 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.access.vote;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.springframework.security.access.AccessDecisionVoter;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.core.Authentication;
/**
* Simple concrete implementation of
* {@link org.springframework.security.access.AccessDecisionManager} that requires all
* voters to abstain or grant access.
*/
public class UnanimousBased extends AbstractAccessDecisionManager {
public UnanimousBased(List> decisionVoters) {
super(decisionVoters);
}
/**
* This concrete implementation polls all configured {@link AccessDecisionVoter}s for
* each {@link ConfigAttribute} and grants access if only grant (or abstain)
* votes were received.
*
* Other voting implementations usually pass the entire list of
* ConfigAttributes to the AccessDecisionVoter. This
* implementation differs in that each AccessDecisionVoter knows only
* about a single ConfigAttribute at a time.
*
* If every AccessDecisionVoter abstained from voting, the decision will
* be based on the {@link #isAllowIfAllAbstainDecisions()} property (defaults to
* false).
* @param authentication the caller invoking the method
* @param object the secured object
* @param attributes the configuration attributes associated with the method being
* invoked
* @throws AccessDeniedException if access is denied
*/
@Override
@SuppressWarnings({ "rawtypes", "unchecked" })
public void decide(Authentication authentication, Object object, Collection attributes)
throws AccessDeniedException {
int grant = 0;
List singleAttributeList = new ArrayList<>(1);
singleAttributeList.add(null);
for (ConfigAttribute attribute : attributes) {
singleAttributeList.set(0, attribute);
for (AccessDecisionVoter voter : getDecisionVoters()) {
int result = voter.vote(authentication, object, singleAttributeList);
switch (result) {
case AccessDecisionVoter.ACCESS_GRANTED:
grant++;
break;
case AccessDecisionVoter.ACCESS_DENIED:
throw new AccessDeniedException(
this.messages.getMessage("AbstractAccessDecisionManager.accessDenied", "Access is denied"));
default:
break;
}
}
}
// To get this far, there were no deny votes
if (grant > 0) {
return;
}
// To get this far, every AccessDecisionVoter abstained
checkAllowIfAllAbstainDecisions();
}
}