Kotlin conversion: DetachedVerifyExternal
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// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package sop.external.operation;
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import sop.Verification;
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import sop.exception.SOPGPException;
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import sop.external.ExternalSOP;
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import sop.operation.DetachedVerify;
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import sop.operation.VerifySignatures;
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import sop.util.UTCUtil;
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import javax.annotation.Nonnull;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Properties;
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import java.util.Set;
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/**
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* Implementation of the {@link DetachedVerify} operation using an external SOP binary.
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*/
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public class DetachedVerifyExternal implements DetachedVerify {
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private final List<String> commandList = new ArrayList<>();
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private final List<String> envList;
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private final Set<InputStream> certs = new HashSet<>();
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private InputStream signatures;
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private int certCounter = 0;
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public DetachedVerifyExternal(String binary, Properties environment) {
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commandList.add(binary);
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commandList.add("verify");
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envList = ExternalSOP.propertiesToEnv(environment);
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}
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@Override
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@Nonnull
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public DetachedVerify notBefore(@Nonnull Date timestamp) throws SOPGPException.UnsupportedOption {
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commandList.add("--not-before=" + UTCUtil.formatUTCDate(timestamp));
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return this;
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}
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@Override
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@Nonnull
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public DetachedVerify notAfter(@Nonnull Date timestamp) throws SOPGPException.UnsupportedOption {
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commandList.add("--not-after=" + UTCUtil.formatUTCDate(timestamp));
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return this;
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}
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@Override
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@Nonnull
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public DetachedVerify cert(@Nonnull InputStream cert) throws SOPGPException.BadData {
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this.certs.add(cert);
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return this;
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}
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@Override
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@Nonnull
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public VerifySignatures signatures(@Nonnull InputStream signatures) throws SOPGPException.BadData {
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this.signatures = signatures;
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return this;
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}
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@Override
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@Nonnull
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public List<Verification> data(@Nonnull InputStream data) throws IOException, SOPGPException.NoSignature, SOPGPException.BadData {
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commandList.add("@ENV:SIGNATURE");
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envList.add("SIGNATURE=" + ExternalSOP.readString(signatures));
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for (InputStream cert : certs) {
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String envVar = "CERT_" + certCounter++;
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commandList.add("@ENV:" + envVar);
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envList.add(envVar + "=" + ExternalSOP.readString(cert));
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}
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String[] command = commandList.toArray(new String[0]);
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String[] env = envList.toArray(new String[0]);
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try {
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Process process = Runtime.getRuntime().exec(command, env);
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OutputStream processOut = process.getOutputStream();
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InputStream processIn = process.getInputStream();
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byte[] buf = new byte[4096];
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int r;
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while ((r = data.read(buf)) > 0) {
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processOut.write(buf, 0, r);
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}
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data.close();
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processOut.close();
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BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(processIn));
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List<Verification> verifications = new ArrayList<>();
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String line = null;
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while ((line = bufferedReader.readLine()) != null) {
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verifications.add(Verification.fromString(line));
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}
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ExternalSOP.finish(process);
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return verifications;
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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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90
external-sop/src/main/kotlin/sop/external/operation/DetachedVerifyExternal.kt
vendored
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90
external-sop/src/main/kotlin/sop/external/operation/DetachedVerifyExternal.kt
vendored
Normal file
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@ -0,0 +1,90 @@
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// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package sop.external.operation
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import java.io.BufferedReader
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import java.io.IOException
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import java.io.InputStream
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import java.io.InputStreamReader
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import java.util.*
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import sop.Verification
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import sop.Verification.Companion.fromString
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import sop.exception.SOPGPException
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import sop.external.ExternalSOP
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import sop.external.ExternalSOP.Companion.finish
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import sop.operation.DetachedVerify
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import sop.operation.VerifySignatures
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import sop.util.UTCUtil
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/** Implementation of the [DetachedVerify] operation using an external SOP binary. */
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class DetachedVerifyExternal(binary: String, environment: Properties) : DetachedVerify {
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private val commandList = mutableListOf(binary, "verify")
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private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
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private var signatures: InputStream? = null
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private val certs: MutableSet<InputStream> = mutableSetOf()
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private var argCounter = 0
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override fun signatures(signatures: InputStream): VerifySignatures = apply {
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this.signatures = signatures
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}
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override fun notBefore(timestamp: Date): DetachedVerify = apply {
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commandList.add("--not-before=${UTCUtil.formatUTCDate(timestamp)}")
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}
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override fun notAfter(timestamp: Date): DetachedVerify = apply {
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commandList.add("--not-after=${UTCUtil.formatUTCDate(timestamp)}")
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}
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override fun cert(cert: InputStream): DetachedVerify = apply { this.certs.add(cert) }
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override fun data(data: InputStream): List<Verification> {
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// Signature
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if (signatures == null) {
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throw SOPGPException.MissingArg("Missing argument: signatures cannot be null.")
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}
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commandList.add("@ENV:SIGNATURE")
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envList.add("SIGNATURE=${ExternalSOP.readString(signatures!!)}")
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// Certs
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for (cert in certs) {
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commandList.add("@ENV:CERT_$argCounter")
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envList.add("CERT_$argCounter=${ExternalSOP.readString(cert)}")
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argCounter += 1
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}
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try {
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val process =
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Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
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val processOut = process.outputStream
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val processIn = process.inputStream
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val buf = ByteArray(4096)
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var r: Int
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while (data.read(buf).also { r = it } > 0) {
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processOut.write(buf, 0, r)
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}
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data.close()
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processOut.close()
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val bufferedReader = BufferedReader(InputStreamReader(processIn))
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val verifications: MutableList<Verification> = ArrayList()
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var line: String?
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while (bufferedReader.readLine().also { line = it } != null) {
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verifications.add(fromString(line!!))
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}
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finish(process)
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return verifications
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} catch (e: IOException) {
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throw RuntimeException(e)
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}
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}
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}
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