Migrates token relay from spring-cloud-security.

pom.xml

@@ -123,6 +123,7 @@
 		<module>spring-cloud-gateway-mvc</module>
 		<module>spring-cloud-gateway-webflux</module>
 		<module>spring-cloud-gateway-server</module>
+		<module>spring-cloud-gateway-server-security</module>
 		<module>spring-cloud-starter-gateway</module>
 		<module>spring-cloud-gateway-sample</module>
 		<module>docs</module>

spring-cloud-gateway-dependencies/pom.xml

@@ -37,6 +37,11 @@
 				<artifactId>spring-cloud-gateway-server</artifactId>
 				<version>${project.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>org.springframework.cloud</groupId>
+				<artifactId>spring-cloud-gateway-server-security</artifactId>
+				<version>${project.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>org.springframework.cloud</groupId>
 				<artifactId>spring-cloud-starter-gateway</artifactId>

spring-cloud-gateway-server-security/pom.xml

@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xmlns="http://maven.apache.org/POM/4.0.0"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<parent>
+		<groupId>org.springframework.cloud</groupId>
+		<artifactId>spring-cloud-gateway</artifactId>
+		<version>3.0.0-SNAPSHOT</version>
+		<relativePath>..</relativePath> <!-- lookup parent from repository -->
+	</parent>
+	<artifactId>spring-cloud-gateway-server-security</artifactId>
+	<packaging>jar</packaging>
+	<name>Spring Cloud Gateway Server Security</name>
+	<description>Spring Cloud Gateway Server Security</description>
+	<properties>
+		<main.basedir>${basedir}/..</main.basedir>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-gateway-server</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-oauth2-client</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-configuration-processor</artifactId>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-devtools</artifactId>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-autoconfigure-processor</artifactId>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-webflux</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.junit.vintage</groupId>
+			<artifactId>junit-vintage-engine</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.junit-pioneer</groupId>
+			<artifactId>junit-pioneer</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-test-support</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>io.projectreactor</groupId>
+			<artifactId>reactor-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.assertj</groupId>
+			<artifactId>assertj-core</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+</project>

spring-cloud-gateway-server-security/src/main/java/org/springframework/cloud/gateway/security/TokenRelayAutoConfiguration.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2013-2014 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.cloud.gateway.security;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication.Type;
+import org.springframework.boot.autoconfigure.security.SecurityProperties;
+import org.springframework.cloud.gateway.filter.GatewayFilter;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.oauth2.client.OAuth2AuthorizedClient;
+import org.springframework.security.oauth2.client.ReactiveOAuth2AuthorizedClientManager;
+import org.springframework.security.oauth2.client.ReactiveOAuth2AuthorizedClientProvider;
+import org.springframework.security.oauth2.client.ReactiveOAuth2AuthorizedClientProviderBuilder;
+import org.springframework.security.oauth2.client.registration.ReactiveClientRegistrationRepository;
+import org.springframework.security.oauth2.client.web.DefaultReactiveOAuth2AuthorizedClientManager;
+import org.springframework.security.oauth2.client.web.server.ServerOAuth2AuthorizedClientRepository;
+import org.springframework.security.web.server.SecurityWebFilterChain;
+
+/**
+ * @author Dave Syer
+ *
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnProperty(name = "spring.cloud.gateway.enabled", matchIfMissing = true)
+@ConditionalOnClass({ GatewayFilter.class, OAuth2AuthorizedClient.class, SecurityWebFilterChain.class,
+		SecurityProperties.class })
+@ConditionalOnWebApplication(type = Type.REACTIVE)
+public class TokenRelayAutoConfiguration {
+
+	@Bean
+	public TokenRelayGatewayFilterFactory tokenRelayGatewayFilterFactory(
+			ReactiveOAuth2AuthorizedClientManager clientManager) {
+		return new TokenRelayGatewayFilterFactory(clientManager);
+	}
+
+	@Bean
+	public ReactiveOAuth2AuthorizedClientManager gatewayReactiveOAuth2AuthorizedClientManager(
+			ReactiveClientRegistrationRepository clientRegistrationRepository,
+			ServerOAuth2AuthorizedClientRepository authorizedClientRepository) {
+		ReactiveOAuth2AuthorizedClientProvider authorizedClientProvider = ReactiveOAuth2AuthorizedClientProviderBuilder
+				.builder().authorizationCode().refreshToken().build();
+		DefaultReactiveOAuth2AuthorizedClientManager authorizedClientManager = new DefaultReactiveOAuth2AuthorizedClientManager(
+				clientRegistrationRepository, authorizedClientRepository);
+		authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider);
+		return authorizedClientManager;
+	}
+
+}

spring-cloud-gateway-server-security/src/main/java/org/springframework/cloud/gateway/security/TokenRelayGatewayFilterFactory.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2002-2018 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.cloud.gateway.security;
+
+import reactor.core.publisher.Mono;
+
+import org.springframework.cloud.gateway.filter.GatewayFilter;
+import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
+import org.springframework.security.oauth2.client.OAuth2AuthorizeRequest;
+import org.springframework.security.oauth2.client.OAuth2AuthorizedClient;
+import org.springframework.security.oauth2.client.ReactiveOAuth2AuthorizedClientManager;
+import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationToken;
+import org.springframework.security.oauth2.core.OAuth2AccessToken;
+import org.springframework.stereotype.Component;
+import org.springframework.web.server.ServerWebExchange;
+
+/**
+ * @author Joe Grandja
+ */
+@Component
+public class TokenRelayGatewayFilterFactory extends AbstractGatewayFilterFactory<Object> {
+
+	private final ReactiveOAuth2AuthorizedClientManager clientManager;
+
+	public TokenRelayGatewayFilterFactory(ReactiveOAuth2AuthorizedClientManager clientManager) {
+		super(Object.class);
+		this.clientManager = clientManager;
+	}
+
+	public GatewayFilter apply() {
+		return apply((Object) null);
+	}
+
+	@Override
+	public GatewayFilter apply(Object config) {
+		return (exchange, chain) -> exchange.getPrincipal()
+				// .log("token-relay-filter")
+				.filter(principal -> principal instanceof OAuth2AuthenticationToken)
+				.cast(OAuth2AuthenticationToken.class)
+				.flatMap(authentication -> authorizedClient(exchange, authentication))
+				.map(OAuth2AuthorizedClient::getAccessToken).map(token -> withBearerAuth(exchange, token))
+				// TODO: adjustable behavior if empty
+				.defaultIfEmpty(exchange).flatMap(chain::filter);
+	}
+
+	private Mono<OAuth2AuthorizedClient> authorizedClient(ServerWebExchange exchange,
+			OAuth2AuthenticationToken oauth2Authentication) {
+		String clientRegistrationId = oauth2Authentication.getAuthorizedClientRegistrationId();
+		OAuth2AuthorizeRequest request = OAuth2AuthorizeRequest.withClientRegistrationId(clientRegistrationId)
+				.principal(oauth2Authentication).build();
+		// TODO: use Mono.defer() for request above?
+		return clientManager.authorize(request);
+	}
+
+	private ServerWebExchange withBearerAuth(ServerWebExchange exchange, OAuth2AccessToken accessToken) {
+		return exchange.mutate().request(r -> r.headers(headers -> headers.setBearerAuth(accessToken.getTokenValue())))
+				.build();
+	}
+
+}

spring-cloud-gateway-server-security/src/main/resources/META-INF/spring.factories

@@ -0,0 +1,3 @@
+# Auto Configure
+org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
+org.springframework.cloud.gateway.security.TokenRelayAutoConfiguration

spring-cloud-gateway-server-security/src/test/java/org/springframework/cloud/gateway/security/TokenRelayAutoConfigurationTests.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2014-2018 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.cloud.gateway.security;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.security.oauth2.client.reactive.ReactiveOAuth2ClientAutoConfiguration;
+import org.springframework.boot.autoconfigure.security.reactive.ReactiveSecurityAutoConfiguration;
+import org.springframework.boot.test.context.runner.ReactiveWebApplicationContextRunner;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.oauth2.client.ReactiveOAuth2AuthorizedClientManager;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Spencer Gibb
+ *
+ */
+public class TokenRelayAutoConfigurationTests {
+
+	@Test
+	public void beansAreCreated() {
+		new ReactiveWebApplicationContextRunner()
+				.withConfiguration(AutoConfigurations.of(ReactiveSecurityAutoConfiguration.class,
+						ReactiveOAuth2ClientAutoConfiguration.class, TokenRelayAutoConfiguration.class))
+				.withPropertyValues(
+						"spring.security.oauth2.client.provider[testprovider].authorization-uri=http://localhost",
+						"spring.security.oauth2.client.provider[testprovider].token-uri=http://localhost/token",
+						"spring.security.oauth2.client.registration[test].provider=testprovider",
+						"spring.security.oauth2.client.registration[test].authorization-grant-type=authorization_code",
+						"spring.security.oauth2.client.registration[test].redirect-uri=http://localhost/redirect",
+						"spring.security.oauth2.client.registration[test].client-id=login-client")
+				.withUserConfiguration(TestConfig.class).withPropertyValues("debug=true").run(context -> {
+					assertThat(context).hasSingleBean(ReactiveOAuth2AuthorizedClientManager.class);
+					assertThat(context).hasSingleBean(TokenRelayGatewayFilterFactory.class);
+				});
+	}
+
+	@Configuration
+	protected static class TestConfig {
+
+	}
+
+}