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b0e062d725
The proxy can then use this information to terminate client connection. This is conformant to RFC 5734 which requires the server to disconnect upon responding to EPP logout request: https://tools.ietf.org/html/rfc5734#section-2 We cannot set "Connection: close" because it is stripped away by App Engine: https://cloud.google.com/appengine/docs/standard/java/how-requests-are-handled#headers_removed ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=173904515
78 lines
3.4 KiB
Java
78 lines
3.4 KiB
Java
// Copyright 2017 The Nomulus Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.flows;
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import static google.registry.flows.EppXmlTransformer.marshalWithLenientRetry;
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import static google.registry.model.eppoutput.Result.Code.SUCCESS_AND_CLOSE;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import static javax.servlet.http.HttpServletResponse.SC_BAD_REQUEST;
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import static javax.servlet.http.HttpServletResponse.SC_OK;
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import com.google.common.net.MediaType;
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import google.registry.model.eppoutput.EppOutput;
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import google.registry.request.Response;
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import google.registry.util.FormattingLogger;
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import javax.inject.Inject;
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/** Handle an EPP request and response. */
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public class EppRequestHandler {
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private static final MediaType APPLICATION_EPP_XML =
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MediaType.create("application", "epp+xml").withCharset(UTF_8);
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private static final FormattingLogger logger = FormattingLogger.getLoggerForCallerClass();
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@Inject EppController eppController;
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@Inject Response response;
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@Inject
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EppRequestHandler() {}
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/** Handle an EPP request and write out a servlet response. */
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public void executeEpp(
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SessionMetadata sessionMetadata,
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TransportCredentials credentials,
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EppRequestSource eppRequestSource,
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boolean isDryRun,
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boolean isSuperuser,
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byte[] inputXmlBytes) {
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try {
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EppOutput eppOutput =
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eppController.handleEppCommand(
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sessionMetadata, credentials, eppRequestSource, isDryRun, isSuperuser, inputXmlBytes);
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response.setPayload(new String(marshalWithLenientRetry(eppOutput), UTF_8));
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response.setContentType(APPLICATION_EPP_XML);
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// Note that we always return 200 (OK) even if the EppController returns an error response.
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// This is because returning a non-OK HTTP status code will cause the proxy server to
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// silently close the connection without returning any data. The only time we will ever return
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// a non-OK status (400) is if we fail to muster even an EPP error response message. In that
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// case it's better to close the connection than to return garbage.
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response.setStatus(SC_OK);
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// Per RFC 5734, a server receiving a logout command must end the EPP session and close the
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// TCP connection. Since the app itself only gets HttpServletRequest and is not aware of TCP
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// sessions, it simply sets the HTTP response header to indicate the connection should be
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// closed by the proxy. Whether the EPP proxy actually terminates the connection with the
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// client is up to its implementation.
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// See: https://tools.ietf.org/html/rfc5734#section-2
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if (eppOutput.isResponse()
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&& eppOutput.getResponse().getResult().getCode() == SUCCESS_AND_CLOSE) {
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response.setHeader("Epp-Session", "close");
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}
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} catch (Exception e) {
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logger.warning(e, "handleEppCommand general exception");
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response.setStatus(SC_BAD_REQUEST);
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}
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}
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}
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