| /* |
| * 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.servicecomb.it.edge.encrypt.filter; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.util.concurrent.CompletableFuture; |
| |
| import org.apache.servicecomb.common.rest.filter.HttpServerFilter; |
| import org.apache.servicecomb.core.Invocation; |
| import org.apache.servicecomb.foundation.vertx.http.HttpServletRequestEx; |
| import org.apache.servicecomb.foundation.vertx.http.HttpServletResponseEx; |
| import org.apache.servicecomb.it.authentication.encrypt.Hcr; |
| import org.apache.servicecomb.it.edge.EdgeConst; |
| import org.apache.servicecomb.it.edge.encrypt.EncryptContext; |
| import org.apache.servicecomb.swagger.invocation.Response; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.hash.Hasher; |
| import com.google.common.hash.Hashing; |
| |
| import io.vertx.core.buffer.Buffer; |
| |
| public class EdgeSignatureResponseFilter implements HttpServerFilter { |
| private static final Logger LOGGER = LoggerFactory.getLogger(EdgeSignatureResponseFilter.class); |
| |
| @Override |
| public int getOrder() { |
| return 10000; |
| } |
| |
| @Override |
| public Response afterReceiveRequest(Invocation invocation, HttpServletRequestEx requestEx) { |
| return null; |
| } |
| |
| @Override |
| public CompletableFuture<Void> beforeSendResponseAsync(Invocation invocation, HttpServletResponseEx responseEx) { |
| if (invocation == null) { |
| return CompletableFuture.completedFuture(null); |
| } |
| |
| EncryptContext encryptContext = (EncryptContext) invocation.getHandlerContext().get(EdgeConst.ENCRYPT_CONTEXT); |
| if (encryptContext == null) { |
| return CompletableFuture.completedFuture(null); |
| } |
| Hcr hcr = encryptContext.getHcr(); |
| |
| // bad practice: it's better to set signature in response header |
| Buffer bodyBuffer = responseEx.getBodyBuffer(); |
| String body = bodyBuffer.toString(); |
| if (body.endsWith("}")) { |
| Hasher hasher = Hashing.sha256().newHasher(); |
| hasher.putString(hcr.getSignatureKey(), StandardCharsets.UTF_8); |
| hasher.putString(body, StandardCharsets.UTF_8); |
| String signature = hasher.hash().toString(); |
| LOGGER.info("beforeSendResponse signature: {}", signature); |
| |
| body = body.substring(0, body.length() - 1) + ",\"signature\":\"" + signature + "\"}"; |
| responseEx.setBodyBuffer(Buffer.buffer(body)); |
| } |
| return CompletableFuture.completedFuture(null); |
| } |
| } |