Add security package with basic infrastructure

Closes gh-80, gh-82

Author: rstoyanchev

build.gradle

@@ -38,6 +38,7 @@ configure(moduleProjects) {
 			mavenBom "io.projectreactor:reactor-bom:2020.0.7"
 			mavenBom "org.springframework:spring-framework-bom:5.3.7"
 			mavenBom "org.springframework.data:spring-data-bom:2021.0.1"
+			mavenBom "org.springframework.security:spring-security-bom:5.5.0"
 			mavenBom "org.junit:junit-bom:5.7.2"
 		}
 		dependencies {

samples/webflux-security/src/main/java/io/spring/sample/graphql/SecurityConfig.java

@@ -17,6 +17,7 @@
 
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.graphql.security.ReactiveSecurityDataFetcherExceptionResolver;
 import org.springframework.security.config.annotation.method.configuration.EnableReactiveMethodSecurity;
 import org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity;
 import org.springframework.security.config.web.server.ServerHttpSecurity;
@@ -52,4 +53,9 @@ public MapReactiveUserDetailsService userDetailsService() {
 		return new MapReactiveUserDetailsService(rob, admin);
 	}
 
+	@Bean
+	public ReactiveSecurityDataFetcherExceptionResolver dataFetcherExceptionResolver() {
+		return new ReactiveSecurityDataFetcherExceptionResolver();
+	}
+
 }

samples/webflux-security/src/main/java/io/spring/sample/graphql/SecurityDataFetcherExceptionResolver.java

@@ -16,13 +16,28 @@
 
 package io.spring.sample.graphql;
 
+import java.time.Duration;
+
+import reactor.core.publisher.Mono;
+
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.graphql.web.WebInterceptor;
 
 @SpringBootApplication
 public class SampleApplication {
 
 	public static void main(String[] args) {
 		SpringApplication.run(SampleApplication.class, args);
 	}
+
+	@Bean
+	public WebInterceptor interceptor() {
+		return (input, next) -> {
+			// Switch threads to prove ThreadLocal context propagation works
+			return Mono.delay(Duration.ofMillis(10)).flatMap(aLong -> next.handle(input));
+		};
+	}
+
 }

samples/webmvc-http-security/src/main/java/io/spring/sample/graphql/SampleApplication.java

@@ -2,6 +2,9 @@
 
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.graphql.execution.ThreadLocalAccessor;
+import org.springframework.graphql.security.SecurityContextThreadLocalAccessor;
+import org.springframework.graphql.security.SecurityDataFetcherExceptionResolver;
 import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
@@ -38,4 +41,14 @@ public static InMemoryUserDetailsManager userDetailsService() {
 		return new InMemoryUserDetailsManager(rob, admin);
 	}
 
+	@Bean
+	public SecurityDataFetcherExceptionResolver dataFetcherExceptionResolver() {
+		return new SecurityDataFetcherExceptionResolver();
+	}
+
+	@Bean
+	public ThreadLocalAccessor threadLocalAccessor() {
+		return new SecurityContextThreadLocalAccessor();
+	}
+
 }

samples/webmvc-http-security/src/main/java/io/spring/sample/graphql/SecurityConfig.java

@@ -11,6 +11,8 @@ dependencies {
 	compileOnly 'org.springframework:spring-websocket'
 	compileOnly 'javax.servlet:javax.servlet-api:4.0.1'
 
+	compileOnly 'org.springframework.security:spring-security-core'
+
 	compileOnly 'com.querydsl:querydsl-core:4.4.0'
 	compileOnly 'org.springframework.data:spring-data-commons'
 

samples/webmvc-http-security/src/main/java/io/spring/sample/graphql/SecurityDataFetcherExceptionResolver.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2002-2021 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.graphql.security;
+
+import graphql.GraphQLError;
+import graphql.GraphqlErrorBuilder;
+import graphql.schema.DataFetchingEnvironment;
+
+import org.springframework.graphql.execution.ErrorType;
+import org.springframework.security.authentication.AuthenticationTrustResolver;
+import org.springframework.security.authentication.AuthenticationTrustResolverImpl;
+import org.springframework.security.core.context.SecurityContext;
+import org.springframework.util.Assert;
+
+/**
+ * Package private delegate class shared by the reactive and non-reactive resolver types.
+ *
+ * @author Rossen Stoyanchev
+ * @since 1.0.0
+ */
+class ExceptionResolverDelegate {
+
+	private AuthenticationTrustResolver resolver = new AuthenticationTrustResolverImpl();
+
+
+	public void setAuthenticationTrustResolver(AuthenticationTrustResolver resolver) {
+		Assert.notNull(resolver, "AuthenticationTrustResolver is required");
+		this.resolver = resolver;
+	}
+
+	public GraphQLError resolveUnauthorized(DataFetchingEnvironment environment) {
+		return GraphqlErrorBuilder.newError(environment)
+				.errorType(ErrorType.UNAUTHORIZED)
+				.message("Unauthorized")
+				.build();
+	}
+
+	public GraphQLError resolveAccessDenied(DataFetchingEnvironment env, SecurityContext securityContext) {
+		return this.resolver.isAnonymous(securityContext.getAuthentication()) ?
+				resolveUnauthorized(env) :
+				GraphqlErrorBuilder.newError(env)
+						.errorType(ErrorType.FORBIDDEN)
+						.message("Forbidden")
+						.build();
+	}
+
+}

spring-graphql/build.gradle

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2002-2021 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.graphql.security;
+
+import java.util.Collections;
+import java.util.List;
+
+import graphql.GraphQLError;
+import graphql.schema.DataFetchingEnvironment;
+import reactor.core.publisher.Mono;
+
+import org.springframework.graphql.execution.DataFetcherExceptionResolver;
+import org.springframework.security.access.AccessDeniedException;
+import org.springframework.security.authentication.AuthenticationTrustResolver;
+import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.core.context.ReactiveSecurityContextHolder;
+
+/**
+ * Reactive
+ * {@link org.springframework.graphql.execution.DataFetcherExceptionResolver}
+ * for Spring Security exceptions. For use in applications with a reactive
+ * transport (e.g. WebFlux HTTP endpoint).
+ *
+ * @author Rob Winch
+ * @author Rossen Stoyanchev
+ * @since 1.0.0
+ */
+public class ReactiveSecurityDataFetcherExceptionResolver implements DataFetcherExceptionResolver {
+
+	private final ExceptionResolverDelegate resolverDelegate = new ExceptionResolverDelegate();
+
+
+	/**
+	 * Set the resolver to use to check if an authentication is anonymous that
+	 * in turn determines whether {@code AccessDeniedException} is classified
+	 * as "unauthorized" or "forbidden".
+	 * @param resolver the resolver to use
+	 */
+	public void setAuthenticationTrustResolver(AuthenticationTrustResolver resolver) {
+		this.resolverDelegate.setAuthenticationTrustResolver(resolver);
+	}
+
+
+	@Override
+	public Mono<List<GraphQLError>> resolveException(Throwable ex, DataFetchingEnvironment env) {
+		if (ex instanceof AuthenticationException) {
+			GraphQLError error = this.resolverDelegate.resolveUnauthorized(env);
+			return Mono.just(Collections.singletonList(error));
+		}
+		if (ex instanceof AccessDeniedException) {
+			return ReactiveSecurityContextHolder.getContext()
+					.map(context -> {
+						GraphQLError error = this.resolverDelegate.resolveAccessDenied(env, context);
+						return Collections.singletonList(error);
+					})
+					.switchIfEmpty(Mono.fromCallable(() -> {
+						GraphQLError error = this.resolverDelegate.resolveUnauthorized(env);
+						return Collections.singletonList(error);
+					}));
+		}
+		return Mono.empty();
+	}
+
+}