Fix health endpoint security

Commit b02aba4c has renamed `management.security.role` to
`management.security.roles`. Unfortunately, the `HealthMvcEndpoint`
was still looking at the old property.

This commit makes sure that the proper key is used and any custom
role is applied rather than an unconditional `ADMIN` role.

See gh-6540

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/mvc/HealthMvcEndpoint.java

@@ -17,7 +17,10 @@
 package org.springframework.boot.actuate.endpoint.mvc;
 
 import java.security.Principal;
+import java.util.Arrays;
+import java.util.Collections;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 import org.springframework.boot.actuate.endpoint.HealthEndpoint;
@@ -35,6 +38,7 @@ import org.springframework.security.core.Authentication;
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.util.Assert;
 import org.springframework.util.ClassUtils;
+import org.springframework.util.StringUtils;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.ResponseBody;
 
@@ -45,6 +49,7 @@ import org.springframework.web.bind.annotation.ResponseBody;
  * @author Dave Syer
  * @author Andy Wilkinson
  * @author Phillip Webb
+ * @author Eddú Meléndez
  * @since 1.1.0
  */
 @ConfigurationProperties(prefix = "endpoints.health")
@@ -184,11 +189,17 @@ public class HealthMvcEndpoint extends AbstractEndpointMvcAdapter<HealthEndpoint
 		}
 		if (isSpringSecurityAuthentication(principal)) {
 			Authentication authentication = (Authentication) principal;
-			String role = this.roleResolver.getProperty("role", "ROLE_ADMIN");
+			List<String> roles = Arrays.asList(StringUtils.trimArrayElements(StringUtils
+					.commaDelimitedListToStringArray(this.roleResolver.getProperty("roles"))));
+			if (roles.isEmpty()) {
+				roles = Collections.singletonList("ROLE_ADMIN");
+			}
 			for (GrantedAuthority authority : authentication.getAuthorities()) {
 				String name = authority.getAuthority();
-				if (role.equals(name) || ("ROLE_" + role).equals(name)) {
-					return true;
+				for (String role : roles) {
+					if (role.equals(name) || ("ROLE_" + role).equals(name)) {
+						return true;
+					}
 				}
 			}
 		}

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/mvc/HealthMvcEndpointTests.java

@@ -42,6 +42,7 @@ import static org.mockito.Mockito.mock;
  * @author Christian Dupuis
  * @author Dave Syer
  * @author Andy Wilkinson
+ * @author Eddú Meléndez
  */
 public class HealthMvcEndpointTests {
 
@@ -49,6 +50,10 @@ public class HealthMvcEndpointTests {
 			Collections.<String, Object>singletonMap("endpoints.health.sensitive",
 					"false"));
 
+	private static final PropertySource<?> SECURITY_ROLES = new MapPropertySource("test",
+			Collections.<String, Object>singletonMap("management.security.roles",
+					"HERO, USER"));
+
 	private HealthEndpoint endpoint = null;
 
 	private HealthMvcEndpoint mvc = null;
@@ -140,6 +145,19 @@ public class HealthMvcEndpointTests {
 		assertThat(((Health) result).getDetails().get("foo")).isNull();
 	}
 
+	@Test
+	public void secureCustomRole() {
+		this.mvc = new HealthMvcEndpoint(this.endpoint, false);
+		this.mvc.setEnvironment(this.environment);
+		this.environment.getPropertySources().addLast(SECURITY_ROLES);
+		given(this.endpoint.invoke())
+				.willReturn(new Health.Builder().up().withDetail("foo", "bar").build());
+		Object result = this.mvc.invoke(this.user);
+		assertThat(result instanceof Health).isTrue();
+		assertThat(((Health) result).getStatus() == Status.UP).isTrue();
+		assertThat(((Health) result).getDetails().get("foo")).isEqualTo("bar");
+	}
+
 	@Test
 	public void healthIsCached() {
 		given(this.endpoint.getTimeToLive()).willReturn(10000L);