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8ec2eaf39c
Second step of RDE encoding refactoring. Creates a single OutputStream encode RyDE files. This replaces the 5 OutputStreams that were needed before. Also removes all the factories that were injected. It's an encoding, there's no point in injecting it. Finally, removed the buffer-size configuration and replaced with a static final const value in each individual OutputStream. This doesn't yet include a decoder (InputStream). And there's still a lot of overlap between the Ryde and the Ghostryde code. Both of those are left for the next CLs. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=204898369
65 lines
2.4 KiB
Java
65 lines
2.4 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.rde;
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import static com.google.common.base.Preconditions.checkArgument;
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import static org.bouncycastle.openpgp.PGPLiteralData.BINARY;
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import google.registry.util.ImprovedOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import javax.annotation.WillNotClose;
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import org.bouncycastle.openpgp.PGPLiteralDataGenerator;
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import org.joda.time.DateTime;
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/**
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* OpenPGP literal data layer generator that wraps {@link OutputStream}.
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*
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* <p>OpenPGP messages are like an onion; there can be many layers like compression and encryption.
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* It's important to wrap out plaintext in a literal data layer such as this so the code that's
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* unwrapping the onion knows when to stop.
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*
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* <p>According to escrow spec, the PGP message should contain a single tar file.
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*/
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public class RydePgpFileOutputStream extends ImprovedOutputStream {
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private static final int BUFFER_SIZE = 64 * 1024;
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/**
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* Creates a new instance for a particular file.
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*
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* @param os is the upstream {@link OutputStream} which is not closed by this object
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* @throws IllegalArgumentException if {@code filename} isn't a {@code .tar} file
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* @throws RuntimeException to rethrow {@link IOException}
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*/
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public RydePgpFileOutputStream(
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@WillNotClose OutputStream os,
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DateTime modified,
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String filename) {
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super("RydePgpFileOutputStream", createDelegate(os, modified, filename));
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}
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private static OutputStream
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createDelegate(OutputStream os, DateTime modified, String filename) {
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try {
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checkArgument(filename.endsWith(".tar"),
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"Ryde PGP message should contain a tar file.");
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return new PGPLiteralDataGenerator().open(
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os, BINARY, filename, modified.toDate(), new byte[BUFFER_SIZE]);
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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}
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