76 lines
2.5 KiB
Java
76 lines
2.5 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.commands;
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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 picocli.CommandLine;
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import java.io.IOException;
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import java.io.PushbackInputStream;
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import java.nio.charset.StandardCharsets;
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import java.util.Arrays;
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import static org.pgpainless.sop.Print.err_ln;
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@CommandLine.Command(name = "armor",
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description = "Add ASCII Armor to standard input",
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exitCodeOnInvalidInput = 37)
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public class Armor implements Runnable {
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private static final byte[] BEGIN_ARMOR = "-----BEGIN PGP".getBytes(StandardCharsets.UTF_8);
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private enum Label {
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auto,
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sig,
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key,
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cert,
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message
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}
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@CommandLine.Option(names = {"--label"}, description = "Label to be used in the header and tail of the armoring.", paramLabel = "{auto|sig|key|cert|message}")
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Label label;
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@CommandLine.Option(names = {"--allow-nested"}, description = "Allow additional armoring of already armored input")
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boolean allowNested = false;
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@Override
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public void run() {
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try (PushbackInputStream pbIn = new PushbackInputStream(System.in, BEGIN_ARMOR.length);
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ArmoredOutputStream armoredOutputStream = ArmoredOutputStreamFactory.get(System.out)) {
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// take a peek
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byte[] firstBytes = new byte[BEGIN_ARMOR.length];
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int readByteCount = pbIn.read(firstBytes);
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if (readByteCount != -1) {
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pbIn.unread(firstBytes, 0, readByteCount);
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}
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if (Arrays.equals(BEGIN_ARMOR, firstBytes) && !allowNested) {
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Streams.pipeAll(pbIn, System.out);
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} else {
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Streams.pipeAll(pbIn, armoredOutputStream);
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}
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} catch (IOException e) {
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err_ln("Input data cannot be ASCII armored.");
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err_ln(e.getMessage());
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System.exit(1);
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}
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}
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}
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