Rename module to external-sop and make backend in tests configurable

external-sop/src/main/java/sop/external/ExternalSOP.java

@@ -0,0 +1,91 @@
+// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.external;
+
+import sop.SOP;
+import sop.external.operation.ExtractCertExternal;
+import sop.external.operation.GenerateKeyExternal;
+import sop.external.operation.VersionExternal;
+import sop.operation.Armor;
+import sop.operation.Dearmor;
+import sop.operation.Decrypt;
+import sop.operation.DetachedSign;
+import sop.operation.DetachedVerify;
+import sop.operation.Encrypt;
+import sop.operation.ExtractCert;
+import sop.operation.GenerateKey;
+import sop.operation.InlineDetach;
+import sop.operation.InlineSign;
+import sop.operation.InlineVerify;
+import sop.operation.Version;
+
+public class ExternalSOP implements SOP {
+
+    private final String binaryName;
+
+    public ExternalSOP(String binaryName) {
+        this.binaryName = binaryName;
+    }
+
+    @Override
+    public Version version() {
+        return new VersionExternal(binaryName);
+    }
+
+    @Override
+    public GenerateKey generateKey() {
+        return new GenerateKeyExternal(binaryName);
+    }
+
+    @Override
+    public ExtractCert extractCert() {
+        return new ExtractCertExternal(binaryName);
+    }
+
+    @Override
+    public DetachedSign detachedSign() {
+        return null;
+    }
+
+    @Override
+    public InlineSign inlineSign() {
+        return null;
+    }
+
+    @Override
+    public DetachedVerify detachedVerify() {
+        return null;
+    }
+
+    @Override
+    public InlineVerify inlineVerify() {
+        return null;
+    }
+
+    @Override
+    public InlineDetach inlineDetach() {
+        return null;
+    }
+
+    @Override
+    public Encrypt encrypt() {
+        return null;
+    }
+
+    @Override
+    public Decrypt decrypt() {
+        return null;
+    }
+
+    @Override
+    public Armor armor() {
+        return null;
+    }
+
+    @Override
+    public Dearmor dearmor() {
+        return null;
+    }
+}