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5012893c1d
This change renames directories in preparation for the great package rename. The repository is now in a broken state because the code itself hasn't been updated. However this should ensure that git correctly preserves history for each file.
88 lines
3.3 KiB
Java
88 lines
3.3 KiB
Java
// Copyright 2016 The Domain Registry 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 com.google.domain.registry.whois;
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import static com.google.domain.registry.request.Action.Method.POST;
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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 com.google.domain.registry.request.Action;
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import com.google.domain.registry.request.Response;
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import com.google.domain.registry.util.Clock;
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import com.google.domain.registry.util.FormattingLogger;
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import org.joda.time.DateTime;
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import java.io.Reader;
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import javax.inject.Inject;
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/**
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* HTTP request handler for WHOIS protocol requests sent to us by a proxy.
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*
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* <p>All commands and responses conform to the WHOIS spec as defined in RFC 3912. Commands must
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* be sent via an HTTP POST in the request body.
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*
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* <p>This servlet is meant to serve as a low level interface for the proxy app which forwards us
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* requests received on port 43. However this interface is technically higher level because it
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* sends back proper HTTP error codes such as 200, 400, 500, etc. These are discarded by the proxy
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* because WHOIS specifies no manner for differentiating successful and erroneous requests.
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*
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* @see WhoisHttpServer
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* @see <a href="http://www.ietf.org/rfc/rfc3912.txt">RFC 3912: WHOIS Protocol Specification</a>
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*/
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@Action(path = "/_dr/whois", method = POST)
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public class WhoisServer implements Runnable {
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private static final FormattingLogger logger = FormattingLogger.getLoggerForCallerClass();
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/** WHOIS doesn't define an encoding, nor any way to specify an encoding in the protocol. */
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static final MediaType CONTENT_TYPE = MediaType.PLAIN_TEXT_UTF_8;
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/**
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* As stated above, this is the low level interface intended for port 43, and as such, it
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* always prefers ASCII.
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*/
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static final boolean PREFER_UNICODE = false;
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@Inject Clock clock;
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@Inject Reader input;
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@Inject Response response;
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@Inject WhoisServer() {}
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@Override
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public void run() {
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String responseText;
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DateTime now = clock.nowUtc();
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try {
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responseText = new WhoisReader(input, now)
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.readCommand()
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.executeQuery(now)
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.getPlainTextOutput(PREFER_UNICODE);
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} catch (WhoisException e) {
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responseText = e.getPlainTextOutput(PREFER_UNICODE);
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} catch (Throwable t) {
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logger.severe(t, "WHOIS request crashed");
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responseText = "Internal Server Error";
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}
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// Note that we always return 200 (OK) even if an error was hit. This is because returning an
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// non-OK HTTP status code will cause the proxy server to silently close the connection. Since
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// WHOIS has no way to return errors, it's better to convert any such errors into strings and
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// return them directly.
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response.setStatus(SC_OK);
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response.setContentType(CONTENT_TYPE);
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response.setPayload(responseText);
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}
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}
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