mirror of
https://github.com/google/nomulus
synced 2026-01-11 00:10:36 +00:00
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.
77 lines
2.7 KiB
Java
77 lines
2.7 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.security;
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import static com.google.common.base.Preconditions.checkNotNull;
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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.domain.registry.request.HttpException;
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import java.io.IOException;
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import java.util.Map;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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/**
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* Secure servlet that speaks JSON for both input and output.
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*
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* <p>This servlet accepts only JSON inputs (using the payload) and returns only JSON
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* responses, using and various security best practices such as a parser breaker,
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* {@code Content-Disposition: attachment}, etc.
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*
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* @see JsonHttp
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*/
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public abstract class JsonTransportServlet extends XsrfProtectedServlet {
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protected JsonTransportServlet(String xsrfScope, boolean requireAdmin) {
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super(xsrfScope, requireAdmin);
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}
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/**
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* Verify that this is a well-formed request and then execute it. A well-formed request will have
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* either a JSON string in the "json" param that evaluates to a map, or nothing in "json".
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*/
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@Override
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protected final void doPost(HttpServletRequest req, HttpServletResponse rsp) throws IOException {
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Map<String, ?> input = JsonHttp.read(req);
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if (input == null) {
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rsp.sendError(SC_BAD_REQUEST, "Malformed JSON");
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return;
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}
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Map<String, ?> output;
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try {
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output = doJsonPost(req, input);
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} catch (HttpException e) {
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e.send(rsp);
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return;
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}
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checkNotNull(output, "doJsonPost() returned null");
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rsp.setStatus(SC_OK);
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JsonHttp.write(rsp, output);
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}
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/**
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* Handler for HTTP POST requests.
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*
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* @param req Servlet request object.
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* @param input JSON request object or empty if none was provided.
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* @return an arbitrary JSON object. Must not be {@code null}.
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* @throws HttpException in order to send a non-200 status code / message to the client.
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*/
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public abstract Map<String, Object> doJsonPost(HttpServletRequest req, Map<String, ?> input);
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}
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