Kotlin conversion: InlineVerifyExternal

external-sop/src/main/kotlin/sop/external/operation/InlineVerifyExternal.kt

@@ -0,0 +1,91 @@
+// 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.Verification
+import sop.Verification.Companion.fromString
+import sop.external.ExternalSOP
+import sop.external.ExternalSOP.Companion.finish
+import sop.operation.InlineVerify
+import sop.util.UTCUtil
+
+/** Implementation of the [InlineVerify] operation using an external SOP binary. */
+class InlineVerifyExternal(
+    binary: String,
+    environment: Properties,
+    private val tempDirProvider: ExternalSOP.TempDirProvider
+) : InlineVerify {
+
+    private val commandList = mutableListOf(binary, "inline-verify")
+    private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
+
+    private var argCounter = 0
+
+    override fun data(data: InputStream): ReadyWithResult<List<Verification>> {
+        val tempDir = tempDirProvider.provideTempDirectory()
+
+        val verificationsOut = File(tempDir, "verifications-out")
+        verificationsOut.delete()
+        commandList.add("--verifications-out=${verificationsOut.absolutePath}")
+
+        try {
+            val process =
+                Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
+            val processOut = process.outputStream
+            val processIn = process.inputStream
+
+            return object : ReadyWithResult<List<Verification>>() {
+                override fun writeTo(outputStream: OutputStream): List<Verification> {
+                    val buf = ByteArray(4096)
+                    var r: Int
+                    while (data.read(buf).also { r = it } > 0) {
+                        processOut.write(buf, 0, r)
+                    }
+
+                    data.close()
+                    processOut.close()
+
+                    while (processIn.read(buf).also { r = it } > 0) {
+                        outputStream.write(buf, 0, r)
+                    }
+
+                    processIn.close()
+                    outputStream.close()
+
+                    finish(process)
+
+                    val verificationsOutIn = FileInputStream(verificationsOut)
+                    val reader = BufferedReader(InputStreamReader(verificationsOutIn))
+                    val verificationList: MutableList<Verification> = mutableListOf()
+                    var line: String
+                    while (reader.readLine().also { line = it } != null) {
+                        verificationList.add(fromString(line.trim()))
+                    }
+
+                    return verificationList
+                }
+            }
+        } catch (e: IOException) {
+            throw RuntimeException(e)
+        }
+    }
+
+    override fun notBefore(timestamp: Date): InlineVerify = apply {
+        commandList.add("--not-before=${UTCUtil.formatUTCDate(timestamp)}")
+    }
+
+    override fun notAfter(timestamp: Date): InlineVerify = apply {
+        commandList.add("--not-after=${UTCUtil.formatUTCDate(timestamp)}")
+    }
+
+    override fun cert(cert: InputStream): InlineVerify = apply {
+        commandList.add("@ENV:CERT_$argCounter")
+        envList.add("CERT_$argCounter=${ExternalSOP.readString(cert)}")
+        argCounter += 1
+    }
+}