Add Authorization Proxy Support

Closes spring-projectsgh-14596

config/src/main/java/org/springframework/security/config/annotation/method/configuration/AuthorizationProxyConfiguration.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2002-2024 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.config.annotation.method.configuration;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.aop.framework.AopInfrastructureBean;
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Role;
+import org.springframework.core.annotation.AnnotationAwareOrderComparator;
+import org.springframework.security.authorization.AuthorizationAdvisorProxyFactory;
+import org.springframework.security.authorization.method.AuthorizationAdvisor;
+
+@Configuration(proxyBeanMethods = false)
+final class AuthorizationProxyConfiguration implements AopInfrastructureBean {
+
+	@Bean
+	@Role(BeanDefinition.ROLE_INFRASTRUCTURE)
+	static AuthorizationAdvisorProxyFactory authorizationProxyFactory(ObjectProvider<AuthorizationAdvisor> provider) {
+		List<AuthorizationAdvisor> advisors = new ArrayList<>();
+		provider.forEach(advisors::add);
+		AnnotationAwareOrderComparator.sort(advisors);
+		return new AuthorizationAdvisorProxyFactory(advisors);
+	}
+
+}

config/src/main/java/org/springframework/security/config/annotation/method/configuration/Jsr250MethodSecurityConfiguration.java

@@ -20,6 +20,7 @@
 import org.aopalliance.intercept.MethodInterceptor;
 import org.aopalliance.intercept.MethodInvocation;
 
+import org.springframework.aop.framework.AopInfrastructureBean;
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.context.annotation.Bean;
@@ -48,7 +49,7 @@
  */
 @Configuration(proxyBeanMethods = false)
 @Role(BeanDefinition.ROLE_INFRASTRUCTURE)
-final class Jsr250MethodSecurityConfiguration implements ImportAware {
+final class Jsr250MethodSecurityConfiguration implements ImportAware, AopInfrastructureBean {
 
 	private int interceptorOrderOffset;
 

config/src/main/java/org/springframework/security/config/annotation/method/configuration/MethodSecuritySelector.java

@@ -56,6 +56,7 @@ public String[] selectImports(@NonNull AnnotationMetadata importMetadata) {
 		if (annotation.jsr250Enabled()) {
 			imports.add(Jsr250MethodSecurityConfiguration.class.getName());
 		}
+		imports.add(AuthorizationProxyConfiguration.class.getName());
 		return imports.toArray(new String[0]);
 	}
 

config/src/main/java/org/springframework/security/config/annotation/method/configuration/PrePostMethodSecurityConfiguration.java

@@ -27,7 +27,6 @@
 import org.jetbrains.annotations.Nullable;
 
 import org.springframework.aop.Pointcut;
-import org.springframework.aop.PointcutAdvisor;
 import org.springframework.aop.framework.AopInfrastructureBean;
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.beans.factory.config.BeanDefinition;
@@ -36,14 +35,14 @@
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.ImportAware;
 import org.springframework.context.annotation.Role;
-import org.springframework.core.Ordered;
 import org.springframework.core.type.AnnotationMetadata;
 import org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler;
 import org.springframework.security.access.expression.method.MethodSecurityExpressionHandler;
 import org.springframework.security.access.hierarchicalroles.NullRoleHierarchy;
 import org.springframework.security.access.hierarchicalroles.RoleHierarchy;
 import org.springframework.security.authorization.AuthorizationEventPublisher;
 import org.springframework.security.authorization.AuthorizationManager;
+import org.springframework.security.authorization.method.AuthorizationAdvisor;
 import org.springframework.security.authorization.method.AuthorizationManagerAfterMethodInterceptor;
 import org.springframework.security.authorization.method.AuthorizationManagerBeforeMethodInterceptor;
 import org.springframework.security.authorization.method.PostAuthorizeAuthorizationManager;
@@ -65,7 +64,7 @@
  */
 @Configuration(proxyBeanMethods = false)
 @Role(BeanDefinition.ROLE_INFRASTRUCTURE)
-final class PrePostMethodSecurityConfiguration implements ImportAware {
+final class PrePostMethodSecurityConfiguration implements ImportAware, AopInfrastructureBean {
 
 	private int interceptorOrderOffset;
 
@@ -175,8 +174,8 @@ public void setImportMetadata(AnnotationMetadata importMetadata) {
 		this.interceptorOrderOffset = annotation.offset();
 	}
 
-	private static final class DeferringMethodInterceptor<M extends Ordered & MethodInterceptor & PointcutAdvisor>
-			implements Ordered, MethodInterceptor, PointcutAdvisor, AopInfrastructureBean {
+	private static final class DeferringMethodInterceptor<M extends AuthorizationAdvisor>
+			implements AuthorizationAdvisor {
 
 		private final Pointcut pointcut;
 

config/src/main/java/org/springframework/security/config/annotation/method/configuration/SecuredMethodSecurityConfiguration.java

@@ -20,6 +20,7 @@
 import org.aopalliance.intercept.MethodInterceptor;
 import org.aopalliance.intercept.MethodInvocation;
 
+import org.springframework.aop.framework.AopInfrastructureBean;
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.context.annotation.Bean;
@@ -48,7 +49,7 @@
  */
 @Configuration(proxyBeanMethods = false)
 @Role(BeanDefinition.ROLE_INFRASTRUCTURE)
-final class SecuredMethodSecurityConfiguration implements ImportAware {
+final class SecuredMethodSecurityConfiguration implements ImportAware, AopInfrastructureBean {
 
 	private int interceptorOrderOffset;
 

config/src/test/java/org/springframework/security/config/annotation/method/configuration/AuthorizationProxyConfigurationTests.java

@@ -0,0 +1,92 @@
+/*
+ * Copyright 2002-2024 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.config.annotation.method.configuration;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.access.AccessDeniedException;
+import org.springframework.security.access.prepost.PostAuthorize;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.authorization.AuthorizationProxyFactory;
+import org.springframework.security.config.test.SpringTestContext;
+import org.springframework.security.config.test.SpringTestContextExtension;
+import org.springframework.security.test.context.annotation.SecurityTestExecutionListeners;
+import org.springframework.security.test.context.support.WithMockUser;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
+
+/**
+ * Tests for {@link PrePostMethodSecurityConfiguration}.
+ *
+ * @author Evgeniy Cheban
+ * @author Josh Cummings
+ */
+@ExtendWith({ SpringExtension.class, SpringTestContextExtension.class })
+@SecurityTestExecutionListeners
+public class AuthorizationProxyConfigurationTests {
+
+	public final SpringTestContext spring = new SpringTestContext(this);
+
+	@Autowired
+	AuthorizationProxyFactory proxyFactory;
+
+	@WithMockUser
+	@Test
+	public void proxyWhenNotPreAuthorizedThenDenies() {
+		this.spring.register(DefaultsConfig.class).autowire();
+		Toaster toaster = (Toaster) this.proxyFactory.proxy(new Toaster());
+		assertThatExceptionOfType(AccessDeniedException.class).isThrownBy(toaster::makeToast)
+			.withMessage("Access Denied");
+		assertThatExceptionOfType(AccessDeniedException.class).isThrownBy(toaster::extractBread)
+			.withMessage("Access Denied");
+	}
+
+	@WithMockUser(roles = "ADMIN")
+	@Test
+	public void proxyWhenPreAuthorizedThenAllows() {
+		this.spring.register(DefaultsConfig.class).autowire();
+		Toaster toaster = (Toaster) this.proxyFactory.proxy(new Toaster());
+		toaster.makeToast();
+		assertThat(toaster.extractBread()).isEqualTo("yummy");
+	}
+
+	@EnableMethodSecurity
+	@Configuration
+	static class DefaultsConfig {
+
+	}
+
+	static class Toaster {
+
+		@PreAuthorize("hasRole('ADMIN')")
+		void makeToast() {
+
+		}
+
+		@PostAuthorize("hasRole('ADMIN')")
+		String extractBread() {
+			return "yummy";
+		}
+
+	}
+
+}