org.springframework.security.authorization.method.PreAuthorizeAuthorizationManager Maven / Gradle / Ivy
/*
* Copyright 2002-2022 the original author or authors.
*
* 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.authorization.method;
import java.util.function.Supplier;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.expression.EvaluationContext;
import org.springframework.security.access.expression.ExpressionUtils;
import org.springframework.security.access.expression.method.MethodSecurityExpressionHandler;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.security.authorization.AuthorizationDecision;
import org.springframework.security.authorization.AuthorizationManager;
import org.springframework.security.authorization.ExpressionAuthorizationDecision;
import org.springframework.security.core.Authentication;
/**
* An {@link AuthorizationManager} which can determine if an {@link Authentication} may
* invoke the {@link MethodInvocation} by evaluating an expression from the
* {@link PreAuthorize} annotation.
*
* @author Evgeniy Cheban
* @since 5.6
*/
public final class PreAuthorizeAuthorizationManager implements AuthorizationManager {
private PreAuthorizeExpressionAttributeRegistry registry = new PreAuthorizeExpressionAttributeRegistry();
/**
* Sets the {@link MethodSecurityExpressionHandler}.
* @param expressionHandler the {@link MethodSecurityExpressionHandler} to use
*/
public void setExpressionHandler(MethodSecurityExpressionHandler expressionHandler) {
this.registry = new PreAuthorizeExpressionAttributeRegistry(expressionHandler);
}
/**
* Determine if an {@link Authentication} has access to a method by evaluating an
* expression from the {@link PreAuthorize} annotation that the
* {@link MethodInvocation} specifies.
* @param authentication the {@link Supplier} of the {@link Authentication} to check
* @param mi the {@link MethodInvocation} to check
* @return an {@link AuthorizationDecision} or {@code null} if the
* {@link PreAuthorize} annotation is not present
*/
@Override
public AuthorizationDecision check(Supplier authentication, MethodInvocation mi) {
ExpressionAttribute attribute = this.registry.getAttribute(mi);
if (attribute == ExpressionAttribute.NULL_ATTRIBUTE) {
return null;
}
EvaluationContext ctx = this.registry.getExpressionHandler().createEvaluationContext(authentication, mi);
boolean granted = ExpressionUtils.evaluateAsBoolean(attribute.getExpression(), ctx);
return new ExpressionAuthorizationDecision(granted, attribute.getExpression());
}
}