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Kotlin conversion: InlineDetachExternal

This commit is contained in:
Paul Schaub 2023-11-15 17:47:37 +01:00
parent 9b79a49bb5
commit f181453004
Signed by: vanitasvitae
GPG Key ID: 62BEE9264BF17311
2 changed files with 82 additions and 106 deletions
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106
external-sop/src/main/java/sop/external/operation/InlineDetachExternal.java vendored
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@ -1,106 +0,0 @@
// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package sop.external.operation;
import sop.ReadyWithResult;
import sop.Signatures;
import sop.exception.SOPGPException;
import sop.external.ExternalSOP;
import sop.operation.InlineDetach;
import javax.annotation.Nonnull;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
/**
* Implementation of the {@link InlineDetach} operation using an external SOP binary.
*/
public class InlineDetachExternal implements InlineDetach {
private final ExternalSOP.TempDirProvider tempDirProvider;
private final List<String> commandList = new ArrayList<>();
private final List<String> envList;
public InlineDetachExternal(String binary, Properties environment, ExternalSOP.TempDirProvider tempDirProvider) {
this.tempDirProvider = tempDirProvider;
commandList.add(binary);
commandList.add("inline-detach");
envList = ExternalSOP.propertiesToEnv(environment);
}
@Override
@Nonnull
public InlineDetach noArmor() {
commandList.add("--no-armor");
return this;
}
@Override
@Nonnull
public ReadyWithResult<Signatures> message(@Nonnull InputStream messageInputStream) throws IOException, SOPGPException.BadData {
File tempDir = tempDirProvider.provideTempDirectory();
File signaturesOut = new File(tempDir, "signatures");
signaturesOut.delete();
commandList.add("--signatures-out=" + signaturesOut.getAbsolutePath());
String[] command = commandList.toArray(new String[0]);
String[] env = envList.toArray(new String[0]);
try {
Process process = Runtime.getRuntime().exec(command, env);
OutputStream processOut = process.getOutputStream();
InputStream processIn = process.getInputStream();
return new ReadyWithResult<Signatures>() {
@Override
public Signatures writeTo(@Nonnull OutputStream outputStream) throws IOException {
byte[] buf = new byte[4096];
int r;
while ((r = messageInputStream.read(buf)) > 0) {
processOut.write(buf, 0, r);
}
messageInputStream.close();
processOut.close();
while ((r = processIn.read(buf)) > 0) {
outputStream.write(buf, 0 , r);
}
processIn.close();
outputStream.close();
ExternalSOP.finish(process);
FileInputStream signaturesOutIn = new FileInputStream(signaturesOut);
ByteArrayOutputStream signaturesBuffer = new ByteArrayOutputStream();
while ((r = signaturesOutIn.read(buf)) > 0) {
signaturesBuffer.write(buf, 0, r);
}
signaturesOutIn.close();
signaturesOut.delete();
final byte[] sigBytes = signaturesBuffer.toByteArray();
return new Signatures() {
@Override
public void writeTo(@Nonnull OutputStream signatureOutputStream) throws IOException {
signatureOutputStream.write(sigBytes);
}
};
}
};
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}

82
external-sop/src/main/kotlin/sop/external/operation/InlineDetachExternal.kt vendored Normal file
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@ -0,0 +1,82 @@
// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package sop.external.operation
import java.io.*
import java.util.*
import sop.ReadyWithResult
import sop.Signatures
import sop.external.ExternalSOP
import sop.external.ExternalSOP.Companion.finish
import sop.operation.InlineDetach
/** Implementation of the [InlineDetach] operation using an external SOP binary. */
class InlineDetachExternal(
binary: String,
environment: Properties,
private val tempDirProvider: ExternalSOP.TempDirProvider
) : InlineDetach {
private val commandList = mutableListOf(binary, "inline-detach")
private val envList = ExternalSOP.propertiesToEnv(environment)
override fun noArmor(): InlineDetach = apply { commandList.add("--no-armor") }
override fun message(messageInputStream: InputStream): ReadyWithResult<Signatures> {
val tempDir = tempDirProvider.provideTempDirectory()
val signaturesOut = File(tempDir, "signatures")
signaturesOut.delete()
commandList.add("--signatures-out=${signaturesOut.absolutePath}")
try {
val process =
Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
val processOut = process.outputStream
val processIn = process.inputStream
return object : ReadyWithResult<Signatures>() {
override fun writeTo(outputStream: OutputStream): Signatures {
val buf = ByteArray(4096)
var r: Int
while (messageInputStream.read(buf).also { r = it } > 0) {
processOut.write(buf, 0, r)
}
messageInputStream.close()
processOut.close()
while (processIn.read(buf).also { r = it } > 0) {
outputStream.write(buf, 0, r)
}
processIn.close()
outputStream.close()
finish(process)
val signaturesOutIn = FileInputStream(signaturesOut)
val signaturesBuffer = ByteArrayOutputStream()
while (signaturesOutIn.read(buf).also { r = it } > 0) {
signaturesBuffer.write(buf, 0, r)
}
signaturesOutIn.close()
signaturesOut.delete()
val sigBytes = signaturesBuffer.toByteArray()
return object : Signatures() {
@Throws(IOException::class)
override fun writeTo(outputStream: OutputStream) {
outputStream.write(sigBytes)
}
}
}
}
} catch (e: IOException) {
throw RuntimeException(e)
}
}
}