org.springframework.security.authorization.method.PreAuthorizeReactiveAuthorizationManager 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 org.aopalliance.intercept.MethodInvocation;
import reactor.core.publisher.Mono;
import org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler;
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.ReactiveAuthorizationManager;
import org.springframework.security.core.Authentication;
import org.springframework.util.Assert;
/**
* A {@link ReactiveAuthorizationManager} which can determine if an {@link Authentication}
* has access to the {@link MethodInvocation} by evaluating an expression from the
* {@link PreAuthorize} annotation.
*
* @author Evgeniy Cheban
* @since 5.8
*/
public final class PreAuthorizeReactiveAuthorizationManager implements ReactiveAuthorizationManager {
private final PreAuthorizeExpressionAttributeRegistry registry;
public PreAuthorizeReactiveAuthorizationManager() {
this(new DefaultMethodSecurityExpressionHandler());
}
public PreAuthorizeReactiveAuthorizationManager(MethodSecurityExpressionHandler expressionHandler) {
Assert.notNull(expressionHandler, "expressionHandler cannot be null");
this.registry = new PreAuthorizeExpressionAttributeRegistry(expressionHandler);
}
/**
* Determines if an {@link Authentication} has access to the {@link MethodInvocation}
* by evaluating an expression from the {@link PreAuthorize} annotation.
* @param authentication the {@link Mono} of the {@link Authentication} to check
* @param mi the {@link MethodInvocation} to check
* @return a {@link Mono} of the {@link AuthorizationDecision} or an empty
* {@link Mono} if the {@link PreAuthorize} annotation is not present
*/
@Override
public Mono check(Mono authentication, MethodInvocation mi) {
ExpressionAttribute attribute = this.registry.getAttribute(mi);
if (attribute == ExpressionAttribute.NULL_ATTRIBUTE) {
return Mono.empty();
}
// @formatter:off
return authentication
.map((auth) -> this.registry.getExpressionHandler().createEvaluationContext(auth, mi))
.flatMap((ctx) -> ReactiveExpressionUtils.evaluateAsBoolean(attribute.getExpression(), ctx))
.map((granted) -> new ExpressionAttributeAuthorizationDecision(granted, attribute));
// @formatter:on
}
}