Github user bostko commented on a diff in the pull request:

    https://github.com/apache/brooklyn-server/pull/519#discussion_r96633651
  
    --- Diff: 
rest/rest-server/src/test/java/org/apache/brooklyn/rest/CorsFilterLauncherTest.java
 ---
    @@ -0,0 +1,168 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you 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.apache.brooklyn.rest;
    +
    +import com.google.common.collect.ImmutableList;
    +import com.google.common.collect.ImmutableMap;
    +import org.apache.brooklyn.api.mgmt.ManagementContext;
    +import org.apache.brooklyn.core.BrooklynFeatureEnablement;
    +import org.apache.brooklyn.core.test.entity.LocalManagementContextForTests;
    +import org.apache.brooklyn.rest.filter.CorsImplSupplierFilter;
    +import org.apache.brooklyn.util.http.HttpTool;
    +import org.apache.brooklyn.util.http.HttpToolResponse;
    +import org.apache.http.client.HttpClient;
    +import org.apache.http.client.methods.HttpUriRequest;
    +import org.apache.http.client.methods.RequestBuilder;
    +import org.apache.http.impl.client.HttpClients;
    +import org.testng.annotations.Test;
    +
    +import javax.ws.rs.core.HttpHeaders;
    +import java.io.IOException;
    +import java.net.URI;
    +import java.util.List;
    +
    +import static 
org.apache.brooklyn.rest.CsrfTokenFilterLauncherTest.assertOkayResponse;
    +import static org.apache.cxf.rs.security.cors.CorsHeaderConstants.*;
    +import static org.testng.Assert.assertEquals;
    +import static org.testng.Assert.assertNull;
    +
    +/**
    + * If brooklyn.experimental.feature.corsCxfFeature.allowedOrigins is not 
supplied then allowedOrigins will be all domains.
    + */
    +public class CorsFilterLauncherTest extends 
BrooklynRestApiLauncherTestFixture {
    +    @Test
    +    public void testEnabledCorsSendsBasicAllowResponse() throws 
IOException {
    +        
BrooklynFeatureEnablement.enable(BrooklynFeatureEnablement.FEATURE_CORS_CXF_PROPERTY);
    +        final String shouldAllowOrigin = "http://foo.bar.com";;
    +        BrooklynRestApiLauncher apiLauncher = baseLauncher()
    +                .withoutJsgui();
    +        ManagementContext mgmt = 
LocalManagementContextForTests.builder(true)
    +                .useAdditionalProperties(ImmutableMap.<String, Object>of(
    +                        
BrooklynFeatureEnablement.FEATURE_CORS_CXF_PROPERTY, true,
    +                        CorsImplSupplierFilter.ALLOWED_ORIGINS.getName(), 
ImmutableList.of(shouldAllowOrigin))
    +                ).build();
    +        apiLauncher.managementContext(mgmt);
    +        useServerForTest(apiLauncher.start());
    +    
    +        // preflight request
    +        HttpClient client = client();
    +        HttpToolResponse response = HttpTool.execAndConsume(client, 
httpOptionsRequest("server/status", "GET", shouldAllowOrigin));
    +        assertAcAllowOrigin(response, shouldAllowOrigin, "GET");
    +        assertOkayResponse(response, "");
    +    
    +        HttpUriRequest httpRequest = RequestBuilder.get(getBaseUriRest() + 
"server/status")
    +                .addHeader("Origin", shouldAllowOrigin)
    +                .addHeader(HEADER_AC_REQUEST_METHOD, "GET")
    +                .build();
    +        response = HttpTool.execAndConsume(client, httpRequest);
    +        assertAcAllowOrigin(response, shouldAllowOrigin, "GET", false);
    +        assertOkayResponse(response, "MASTER");
    +        
    +        // preflight request
    +        response = HttpTool.execAndConsume(client, 
httpOptionsRequest("script/groovy", "POST", shouldAllowOrigin));
    +        assertAcAllowOrigin(response, shouldAllowOrigin, "POST");
    +        assertOkayResponse(response, "");
    +        
    +        response = HttpTool.httpPost(
    +                client, URI.create(getBaseUriRest() + "script/groovy"),
    +                ImmutableMap.<String,String>of(
    +                        "Origin", shouldAllowOrigin,
    +                        HttpHeaders.CONTENT_TYPE, "application/text"),
    +                "return 0;".getBytes());
    +        assertAcAllowOrigin(response, shouldAllowOrigin, "POST", false);
    +        assertOkayResponse(response, "{\"result\":\"0\"}");
    +    
    +        final String thirdPartyOrigin = "http://foo.bar1.com";;
    +    
    +        // preflight request
    +        response = HttpTool.execAndConsume(client, 
httpOptionsRequest("server/status", "GET", thirdPartyOrigin));
    +        assertAcNotAllowOrigin(response);
    +        assertOkayResponse(response, "");
    +    
    +        // preflight request
    +        response = HttpTool.execAndConsume(client, 
httpOptionsRequest("script/groovy", "POST", thirdPartyOrigin));
    +        assertAcNotAllowOrigin(response);
    +        assertOkayResponse(response, "");
    +    
    +        response = HttpTool.httpPost(
    +                client, URI.create(getBaseUriRest() + "script/groovy"),
    +                ImmutableMap.<String,String>of(
    +                        "Origin", thirdPartyOrigin,
    +                        HttpHeaders.CONTENT_TYPE, "application/text"),
    +                "return 0;".getBytes());
    +        assertAcNotAllowOrigin(response);
    +        assertOkayResponse(response, "{\"result\":\"0\"}");
    +    }
    +    
    +    @Test
    +    public void testCorsIsDisabled() throws IOException {
    +        
BrooklynFeatureEnablement.disable(BrooklynFeatureEnablement.FEATURE_CORS_CXF_PROPERTY);
    +        final String shouldAllowOrigin = "http://foo.bar.com";;
    +        BrooklynRestApiLauncher apiLauncher = baseLauncher()
    +                .withoutJsgui();
    +        ManagementContext mgmt = 
LocalManagementContextForTests.builder(true)
    +                .useAdditionalProperties(ImmutableMap.<String, Object>of(
    +                        
BrooklynFeatureEnablement.FEATURE_CORS_CXF_PROPERTY, false)
    +                ).build();
    +        apiLauncher.managementContext(mgmt);
    +        useServerForTest(apiLauncher.start());
    +    
    +        HttpClient client = client();
    +        HttpToolResponse response = HttpTool.execAndConsume(client, 
httpOptionsRequest("server/status", "GET", shouldAllowOrigin));
    +        assertNull(response.getHeaderLists().get(HEADER_AC_ALLOW_ORIGIN), 
"Access Control Header should not be available.");
    +        assertOkayResponse(response, "");
    +    
    +        response = HttpTool.execAndConsume(client, 
httpOptionsRequest("script/groovy", shouldAllowOrigin, "POST"));
    +        assertNull(response.getHeaderLists().get(HEADER_AC_ALLOW_ORIGIN), 
"Access Control Header should not be available.");
    +        assertOkayResponse(response, "");
    --- End diff --
    
    @geomacy that's right.


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