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70b13596e4
This is a 'green' Flogger migration CL. Green CLs are intended to be as safe as possible and should be easy to review and submit. No changes should be necessary to the code itself prior to submission, but small changes to BUILD files may be required. Changes within files are completely independent of each other, so this CL can be safely split up for review using tools such as Rosie. For more information, see [] Base CL: 197826149 ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=198560170
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.flogger.FluentLogger;
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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 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 FluentLogger logger = FluentLogger.forEnclosingClass();
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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.setContentType(APPLICATION_EPP_XML);
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response.setPayload(new String(marshalWithLenientRetry(eppOutput), UTF_8));
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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.atWarning().withCause(e).log("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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