[bs-138] Make it easy to secure only the management endpoints

Example: web UI with publicly available static assets

    # application.properties:
    security.ignored: /css/**,/script/**

Example: web UI with publicly available everything, but secure
management endpoints.

    # application.properties:
    # Empty path for basic security (default is /**)
    security.basic.path=

[Fixes #50721675]

spring-bootstrap-actuator/docs/Features.md

@@ -168,6 +168,27 @@ a jar which wraps `SpringApplication`:
 
     $ java -jar myproject.jar --spring.config.name=myproject
 
+## Providing Defaults for Externalized Configuration
+
+For `@ConfigurationProperties` beans that are provided by the
+framework itself you can always change the values that are bound to it
+by changing `application.properties`.  But it is sometimes also useful
+to change the default values imperatively in Java, so get more control
+over the process.  You can do this by declaring a bean of the same
+type in your application context, e.g. for the server properties:
+
+    @AssertMissingBean(ServerProperties.class)
+    @Bean
+    public ServerProperties serverProperties() {
+        ServerProperties server = new ServerProperties();
+        server.setPort(8888);
+        return server;
+    }
+
+Note the use of `@AssertMissingBean` to guard against any mistakes
+where the bean is already defined (and therefore might already have
+been bound).
+
 ## Server Configuration
 
 The `ServerProperties` are bound to application properties, and
@@ -337,9 +358,13 @@ every request in the main server (and the management server if it is
 running on the same port).  There is a single account by default, and
 you can test it like this:
 
-    $ mvn user:password@localhost:8080/info
+    $ mvn user:password@localhost:8080/metrics
     ... stuff comes out
 
+If the management server is running on a different port it is
+unsecured by default.  If you want to secure it you can add a security
+auto configuration explicitly
+
 ## Security - HTTPS
 
 Ensuring that all your main endpoints are only available over HTTPS is
@@ -357,10 +382,14 @@ entries to `application.properties`, e.g.
     server.tomcat.remote_ip_header: x-forwarded-for
     server.tomcat.protocol_header: x-forwarded-proto
     
-(Or you can add the `RemoteIpValve` yourself by adding a
+(The presence of either of those properties will switch on the
+valve. Or you can add the `RemoteIpValve` yourself by adding a
 `TomcatEmbeddedServletContainerFactory` bean.)
 
-TODO: Spring Security configuration for 'require channel'.
+Spring Security can also be configured to require a secure channel for
+all (or some requests). To switch that on in an Actuator application
+you just need to set `security.require_https: true` in
+`application.properties`.
 
 ## Audit Events
 

spring-bootstrap-actuator/src/main/java/org/springframework/bootstrap/actuate/autoconfigure/ManagementServerConfiguration.java

@@ -16,12 +16,22 @@
 
 package org.springframework.bootstrap.actuate.autoconfigure;
 
+import java.io.IOException;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+
+import org.springframework.beans.factory.BeanFactory;
 import org.springframework.beans.factory.HierarchicalBeanFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.bootstrap.actuate.endpoint.error.ErrorEndpoint;
 import org.springframework.bootstrap.actuate.properties.ManagementServerProperties;
 import org.springframework.bootstrap.context.annotation.ConditionalOnBean;
+import org.springframework.bootstrap.context.annotation.ConditionalOnClass;
 import org.springframework.bootstrap.context.embedded.ConfigurableEmbeddedServletContainerFactory;
 import org.springframework.bootstrap.context.embedded.EmbeddedServletContainerCustomizer;
 import org.springframework.bootstrap.context.embedded.EmbeddedServletContainerFactory;
@@ -31,8 +41,10 @@ import org.springframework.bootstrap.context.embedded.tomcat.TomcatEmbeddedServl
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
 import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
 import org.springframework.stereotype.Component;
+import org.springframework.web.filter.GenericFilterBean;
 import org.springframework.web.servlet.DispatcherServlet;
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
 
@@ -43,6 +55,7 @@ import org.springframework.web.servlet.config.annotation.EnableWebMvc;
  */
 @Configuration
 @EnableWebMvc
+@Import(ManagementSecurityConfiguration.class)
 public class ManagementServerConfiguration {
 
 	@Bean
@@ -100,3 +113,28 @@ public class ManagementServerConfiguration {
 	}
 
 }
+
+@Configuration
+@ConditionalOnClass(name = {
+		"org.springframework.security.config.annotation.web.EnableWebSecurity",
+		"javax.servlet.Filter" })
+class ManagementSecurityConfiguration {
+
+	@Bean
+	// TODO: enable and get rid of the empty filter when @ConditionalOnBean works
+	// @ConditionalOnBean(name = "springSecurityFilterChain")
+	public Filter springSecurityFilterChain(HierarchicalBeanFactory beanFactory) {
+		BeanFactory parent = beanFactory.getParentBeanFactory();
+		if (parent != null && parent.containsBean("springSecurityFilterChain")) {
+			return parent.getBean("springSecurityFilterChain", Filter.class);
+		}
+		return new GenericFilterBean() {
+			@Override
+			public void doFilter(ServletRequest request, ServletResponse response,
+					FilterChain chain) throws IOException, ServletException {
+				chain.doFilter(request, response);
+			}
+		};
+	}
+
+}

spring-bootstrap-actuator/src/main/java/org/springframework/bootstrap/actuate/autoconfigure/SecurityAutoConfiguration.java

@@ -16,6 +16,11 @@
 
 package org.springframework.bootstrap.actuate.autoconfigure;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.springframework.beans.factory.BeanFactoryUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.bootstrap.actuate.properties.EndpointsProperties;
 import org.springframework.bootstrap.actuate.properties.SecurityProperties;
@@ -23,11 +28,16 @@ import org.springframework.bootstrap.context.annotation.ConditionalOnClass;
 import org.springframework.bootstrap.context.annotation.ConditionalOnMissingBean;
 import org.springframework.bootstrap.context.annotation.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Condition;
+import org.springframework.context.annotation.ConditionContext;
+import org.springframework.context.annotation.Conditional;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.core.type.AnnotatedTypeMetadata;
 import org.springframework.security.authentication.AuthenticationEventPublisher;
 import org.springframework.security.authentication.AuthenticationManager;
 import org.springframework.security.authentication.DefaultAuthenticationEventPublisher;
 import org.springframework.security.authentication.ProviderManager;
+import org.springframework.security.config.BeanIds;
 import org.springframework.security.config.annotation.authentication.AuthenticationManagerBuilder;
 import org.springframework.security.config.annotation.web.EnableWebSecurity;
 import org.springframework.security.config.annotation.web.HttpConfiguration;
@@ -58,6 +68,7 @@ public class SecurityAutoConfiguration {
 	}
 
 	@Bean
+	@ConditionalOnMissingBean({ BoostrapWebSecurityConfigurerAdapter.class })
 	public WebSecurityConfigurerAdapter webSecurityConfigurerAdapter() {
 		return new BoostrapWebSecurityConfigurerAdapter();
 	}
@@ -76,20 +87,42 @@ public class SecurityAutoConfiguration {
 
 		@Override
 		protected void configure(HttpConfiguration http) throws Exception {
+
 			if (this.security.isRequireSsl()) {
-				http.requiresChannel().antMatchers("/**").requiresSecure();
+				http.requiresChannel().anyRequest().requiresSecure();
 			}
+
 			if (this.security.getBasic().isEnabled()) {
-				HttpConfiguration matcher = http.antMatcher(this.security.getBasic()
-						.getPath());
-				matcher.authenticationEntryPoint(entryPoint()).antMatcher("/**")
-						.httpBasic().authenticationEntryPoint(entryPoint()).and()
-						.anonymous().disable();
-				matcher.authorizeUrls().antMatchers("/**")
+
+				String[] paths = getSecurePaths();
+
+				HttpConfiguration matcher = http.requestMatchers().antMatchers(paths);
+				matcher.authenticationEntryPoint(entryPoint()).httpBasic()
+						.authenticationEntryPoint(entryPoint()).and().anonymous()
+						.disable();
+				matcher.authorizeUrls().anyRequest()
 						.hasRole(this.security.getBasic().getRole());
+
 			}
+
 			// No cookies for service endpoints by default
 			http.sessionManagement().sessionCreationPolicy(this.security.getSessions());
+
+		}
+
+		private String[] getSecurePaths() {
+			List<String> list = new ArrayList<String>();
+			for (String path : this.security.getBasic().getPath()) {
+				path = path == null ? "" : path.trim();
+				if (path.equals("/**")) {
+					return new String[] { path };
+				}
+				if (!path.equals("")) {
+					list.add(path);
+				}
+			}
+			list.addAll(Arrays.asList(this.endpoints.getSecurePaths()));
+			return list.toArray(new String[list.size()]);
 		}
 
 		private AuthenticationEntryPoint entryPoint() {
@@ -100,9 +133,8 @@ public class SecurityAutoConfiguration {
 
 		@Override
 		public void configure(WebSecurityBuilder builder) throws Exception {
-			builder.ignoring().antMatchers(this.endpoints.getHealth().getPath(),
-					this.endpoints.getInfo().getPath(),
-					this.endpoints.getError().getPath());
+			builder.ignoring().antMatchers(this.security.getIgnored())
+					.antMatchers(this.endpoints.getOpenPaths());
 		}
 
 		@Override
@@ -117,7 +149,7 @@ public class SecurityAutoConfiguration {
 
 	}
 
-	@ConditionalOnMissingBean(AuthenticationManager.class)
+	@Conditional(NoUserSuppliedAuthenticationManager.class)
 	@Configuration
 	public static class AuthenticationManagerConfiguration {
 
@@ -130,4 +162,21 @@ public class SecurityAutoConfiguration {
 
 	}
 
+	private static class NoUserSuppliedAuthenticationManager implements Condition {
+
+		@Override
+		public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
+			String[] beans = BeanFactoryUtils.beanNamesForTypeIncludingAncestors(
+					context.getBeanFactory(), AuthenticationManager.class, false, false);
+			for (String bean : beans) {
+				if (!BeanIds.AUTHENTICATION_MANAGER.equals(bean)) {
+					// Not the one supplied by Spring Security automatically
+					return false;
+				}
+			}
+			return true;
+		}
+
+	}
+
 }

spring-bootstrap-actuator/src/main/java/org/springframework/bootstrap/actuate/properties/SecurityProperties.java

@@ -33,7 +33,8 @@ public class SecurityProperties {
 
 	private SessionCreationPolicy sessions = SessionCreationPolicy.stateless;
 
-	private String[] ignored = new String[0];
+	private String[] ignored = new String[] { "/css/**", "/js/**", "/images/**",
+			"/**/favicon.ico" };
 
 	public SessionCreationPolicy getSessions() {
 		return this.sessions;
@@ -73,7 +74,7 @@ public class SecurityProperties {
 
 		private String realm = "Spring";
 
-		private String path = "/**";
+		private String[] path = new String[] { "/**" };
 
 		private String role = "USER";
 
@@ -93,12 +94,12 @@ public class SecurityProperties {
 			this.realm = realm;
 		}
 
-		public String getPath() {
+		public String[] getPath() {
 			return this.path;
 		}
 
-		public void setPath(String path) {
-			this.path = path;
+		public void setPath(String... paths) {
+			this.path = paths;
 		}
 
 		public String getRole() {

spring-bootstrap-actuator/src/test/java/org/springframework/bootstrap/actuate/autoconfigure/ManagementConfigurationTests.java

@@ -16,6 +16,7 @@
 
 package org.springframework.bootstrap.actuate.autoconfigure;
 
+import javax.servlet.Filter;
 import javax.servlet.Servlet;
 import javax.servlet.ServletContext;
 import javax.servlet.ServletException;
@@ -133,6 +134,14 @@ public class ManagementConfigurationTests {
 						public Dynamic addServlet(String servletName, Servlet servlet) {
 							return Mockito.mock(Dynamic.class);
 						}
+
+						@Override
+						public javax.servlet.FilterRegistration.Dynamic addFilter(
+								String filterName, Filter filter) {
+							// TODO: remove this when @ConditionalOnBean works
+							return Mockito
+									.mock(javax.servlet.FilterRegistration.Dynamic.class);
+						}
 					};
 					for (ServletContextInitializer initializer : initializers) {
 						try {

spring-bootstrap-actuator/src/test/java/org/springframework/bootstrap/actuate/properties/SecurityPropertiesTests.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2012-2013 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
+ *
+ *      http://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.bootstrap.actuate.properties;
+
+import java.util.Collections;
+
+import org.junit.Test;
+import org.springframework.beans.MutablePropertyValues;
+import org.springframework.bootstrap.bind.RelaxedDataBinder;
+import org.springframework.core.convert.support.DefaultConversionService;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+
+/**
+ * @author Dave Syer
+ * 
+ */
+public class SecurityPropertiesTests {
+
+	@Test
+	public void testBindingIgnoredSingleValued() {
+		SecurityProperties security = new SecurityProperties();
+		RelaxedDataBinder binder = new RelaxedDataBinder(security, "security");
+		binder.bind(new MutablePropertyValues(Collections.singletonMap(
+				"security.ignored", "/css/**")));
+		assertFalse(binder.getBindingResult().hasErrors());
+		assertEquals(1, security.getIgnored().length);
+	}
+
+	@Test
+	public void testBindingIgnoredMultiValued() {
+		SecurityProperties security = new SecurityProperties();
+		RelaxedDataBinder binder = new RelaxedDataBinder(security, "security");
+		binder.setConversionService(new DefaultConversionService());
+		binder.bind(new MutablePropertyValues(Collections.singletonMap(
+				"security.ignored", "/css/**,/images/**")));
+		assertFalse(binder.getBindingResult().hasErrors());
+		assertEquals(2, security.getIgnored().length);
+	}
+
+}

spring-bootstrap-cli/src/main/java/org/springframework/bootstrap/cli/compiler/autoconfigure/SpringBootstrapCompilerAutoConfiguration.java

@@ -74,6 +74,7 @@ public class SpringBootstrapCompilerAutoConfiguration extends CompilerAutoConfig
 				"org.springframework.context.annotation.Bean",
 				"org.springframework.context.ApplicationContext",
 				"org.springframework.context.MessageSource",
+				"org.springframework.core.annotation.Order",
 				"org.springframework.core.io.ResourceLoader",
 				"org.springframework.bootstrap.CommandLineRunner",
 				"org.springframework.bootstrap.context.annotation.EnableAutoConfiguration");

spring-bootstrap-samples/spring-bootstrap-actuator-sample/src/test/java/org/springframework/bootstrap/sample/test/ManagementAddressServiceBootstrapApplicationTests.java

@@ -28,7 +28,6 @@ import org.springframework.web.client.DefaultResponseErrorHandler;
 import org.springframework.web.client.RestTemplate;
 
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
 
 /**
  * Integration tests for separate management and main service ports.
@@ -83,10 +82,7 @@ public class ManagementAddressServiceBootstrapApplicationTests {
 		@SuppressWarnings("rawtypes")
 		ResponseEntity<Map> entity = getRestTemplate().getForEntity(
 				"http://localhost:" + managementPort + "/metrics", Map.class);
-		assertEquals(HttpStatus.OK, entity.getStatusCode());
-		@SuppressWarnings("unchecked")
-		Map<String, Object> body = entity.getBody();
-		assertTrue("Wrong body: " + body, body.containsKey("counter.status.200.root"));
+		assertEquals(HttpStatus.UNAUTHORIZED, entity.getStatusCode());
 	}
 
 	@Test

spring-bootstrap-samples/spring-bootstrap-actuator-ui-sample/src/main/java/org/springframework/bootstrap/sample/ui/ActuatorUiBootstrapApplication.java

@@ -4,19 +4,14 @@ import java.util.Date;
 import java.util.Map;
 
 import org.springframework.bootstrap.SpringApplication;
-import org.springframework.bootstrap.actuate.autoconfigure.ConditionalOnManagementContext;
-import org.springframework.bootstrap.actuate.autoconfigure.ManagementAutoConfiguration;
-import org.springframework.bootstrap.actuate.autoconfigure.SecurityAutoConfiguration;
-import org.springframework.bootstrap.context.annotation.ConditionalOnExpression;
+import org.springframework.bootstrap.actuate.properties.SecurityProperties;
 import org.springframework.bootstrap.context.annotation.EnableAutoConfiguration;
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.context.annotation.Import;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 
-@EnableAutoConfiguration(exclude = { SecurityAutoConfiguration.class,
-		ManagementAutoConfiguration.class })
+@EnableAutoConfiguration
 @ComponentScan
 @Controller
 public class ActuatorUiBootstrapApplication {
@@ -33,19 +28,11 @@ public class ActuatorUiBootstrapApplication {
 		SpringApplication.run(ActuatorUiBootstrapApplication.class, args);
 	}
 
-	@Configuration
-	@ConditionalOnExpression("${server.port:8080} != ${management.port:${server.port:8080}}")
-	@Import(ManagementAutoConfiguration.class)
-	protected static class ManagementConfiguration {
-
-	}
-
-	@Configuration
-	@ConditionalOnExpression("${server.port:8080} != ${management.port:${server.port:8080}}")
-	@ConditionalOnManagementContext
-	@Import(SecurityAutoConfiguration.class)
-	protected static class ManagementSecurityConfiguration {
-
+	@Bean
+	public SecurityProperties securityProperties() {
+		SecurityProperties security = new SecurityProperties();
+		security.getBasic().setPath(""); // empty
+		return security;
 	}
 
 }

spring-bootstrap-samples/spring-bootstrap-actuator-ui-sample/src/test/java/org/springframework/bootstrap/sample/ui/ActuatorUiBootstrapApplicationTests.java

@@ -1,6 +1,7 @@
 package org.springframework.bootstrap.sample.ui;
 
 import java.io.IOException;
+import java.util.Map;
 import java.util.concurrent.Callable;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
@@ -68,6 +69,14 @@ public class ActuatorUiBootstrapApplicationTests {
 		assertTrue("Wrong body:\n" + entity.getBody(), entity.getBody().contains("body"));
 	}
 
+	@Test
+	public void testMetrics() throws Exception {
+		@SuppressWarnings("rawtypes")
+		ResponseEntity<Map> entity = getRestTemplate().getForEntity(
+				"http://localhost:8080/metrics", Map.class);
+		assertEquals(HttpStatus.UNAUTHORIZED, entity.getStatusCode());
+	}
+
 	private RestTemplate getRestTemplate() {
 		RestTemplate restTemplate = new RestTemplate();
 		restTemplate.setErrorHandler(new DefaultResponseErrorHandler() {

spring-bootstrap/src/main/java/org/springframework/bootstrap/context/annotation/PropertySourcesBindingPostProcessor.java

@@ -23,6 +23,7 @@ import org.springframework.bootstrap.bind.PropertiesConfigurationFactory;
 import org.springframework.bootstrap.context.annotation.EnableConfigurationPropertiesImportSelector.ConfigurationPropertiesHolder;
 import org.springframework.core.annotation.AnnotationUtils;
 import org.springframework.core.convert.ConversionService;
+import org.springframework.core.convert.support.DefaultConversionService;
 import org.springframework.core.env.PropertySources;
 import org.springframework.validation.Validator;
 
@@ -40,6 +41,8 @@ public class PropertySourcesBindingPostProcessor implements BeanPostProcessor {
 
 	private ConversionService conversionService;
 
+	private DefaultConversionService defaultConversionService = new DefaultConversionService();
+
 	/**
 	 * @param propertySources
 	 */
@@ -81,7 +84,10 @@ public class PropertySourcesBindingPostProcessor implements BeanPostProcessor {
 					target);
 			factory.setPropertySources(this.propertySources);
 			factory.setValidator(this.validator);
-			factory.setConversionService(this.conversionService);
+			// If no explicit conversion service is provided we add one so that (at least)
+			// comma-separated arrays of convertibles can be bound automatically
+			factory.setConversionService(this.conversionService == null ? this.defaultConversionService
+					: this.conversionService);
 			String targetName = null;
 			if (annotation != null) {
 				factory.setIgnoreInvalidFields(annotation.ignoreInvalidFields());

spring-bootstrap/src/test/java/org/springframework/bootstrap/context/annotation/EnableConfigurationPropertiesTests.java

@@ -48,6 +48,15 @@ public class EnableConfigurationPropertiesTests {
 		assertEquals("foo", this.context.getBean(TestProperties.class).getName());
 	}
 
+	@Test
+	public void testArrayPropertiesBinding() {
+		this.context.register(TestConfiguration.class);
+		TestUtils.addEnviroment(this.context, "name:foo", "array:1,2,3");
+		this.context.refresh();
+		assertEquals(1, this.context.getBeanNamesForType(TestProperties.class).length);
+		assertEquals(3, this.context.getBean(TestProperties.class).getArray().length);
+	}
+
 	@Test
 	public void testPropertiesBindingWithoutAnnotation() {
 		this.context.register(MoreConfiguration.class);
@@ -186,6 +195,7 @@ public class EnableConfigurationPropertiesTests {
 	@ConfigurationProperties
 	protected static class TestProperties {
 		private String name;
+		private int[] array;
 
 		public String getName() {
 			return this.name;
@@ -194,6 +204,14 @@ public class EnableConfigurationPropertiesTests {
 		public void setName(String name) {
 			this.name = name;
 		}
+
+		public void setArray(int... values) {
+			this.array = values;
+		}
+
+		public int[] getArray() {
+			return this.array;
+		}
 	}
 
 	protected static class MoreProperties {