70 lines
2.3 KiB
Java
70 lines
2.3 KiB
Java
/*
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* Copyright 2020 Paul Schaub.
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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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*/
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package org.pgpainless.sop;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.PushbackInputStream;
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import java.nio.charset.Charset;
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import java.util.Arrays;
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import org.bouncycastle.bcpg.ArmoredOutputStream;
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import org.bouncycastle.util.io.Streams;
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import org.pgpainless.util.ArmoredOutputStreamFactory;
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import sop.Ready;
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import sop.enums.ArmorLabel;
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import sop.exception.SOPGPException;
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import sop.operation.Armor;
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public class ArmorImpl implements Armor {
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public static final byte[] ARMOR_START = "-----BEGIN PGP".getBytes(Charset.forName("UTF8"));
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boolean allowNested = false;
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@Override
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public Armor label(ArmorLabel label) throws SOPGPException.UnsupportedOption {
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throw new SOPGPException.UnsupportedOption();
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}
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@Override
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public Armor allowNested() throws SOPGPException.UnsupportedOption {
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allowNested = true;
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return this;
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}
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@Override
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public Ready data(InputStream data) throws SOPGPException.BadData {
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return new Ready() {
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@Override
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public void writeTo(OutputStream outputStream) throws IOException {
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PushbackInputStream pbIn = new PushbackInputStream(data, ARMOR_START.length);
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byte[] buffer = new byte[ARMOR_START.length];
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int read = pbIn.read(buffer);
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pbIn.unread(buffer, 0, read);
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if (!allowNested && Arrays.equals(ARMOR_START, buffer)) {
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Streams.pipeAll(pbIn, System.out);
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} else {
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ArmoredOutputStream armor = ArmoredOutputStreamFactory.get(System.out);
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Streams.pipeAll(pbIn, armor);
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armor.close();
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}
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}
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};
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}
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}
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