cpp: Add interactor to add existing subkeys to other keys

* lang/cpp/src/gpgaddexistingsubkeyeditinteractor.cpp,
lang/cpp/src/gpgaddexistingsubkeyeditinteractor.h: New.
* lang/cpp/src/Makefile.am: Add new files.
--

GnuPG-bug-id: 5770

1 files changed, 59 insertions, 0 deletions

diff --git a/lang/cpp/src/gpgaddexistingsubkeyeditinteractor.h b/lang/cpp/src/gpgaddexistingsubkeyeditinteractor.h
new file mode 100644
index 00000000..c30f18e4
--- /dev/null
+++ b/lang/cpp/src/gpgaddexistingsubkeyeditinteractor.h
@@ -0,0 +1,59 @@
+/*
+  gpgaddexistingsubkeyeditinteractor.h - Edit Interactor to add an existing subkey to an OpenPGP key
+  Copyright (c) 2022 g10 Code GmbH
+  Software engineering by Ingo Klöcker <[email protected]>
+
+  This file is part of GPGME++.
+
+  GPGME++ is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Library General Public
+  License as published by the Free Software Foundation; either
+  version 2 of the License, or (at your option) any later version.
+
+  GPGME++ is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU Library General Public License for more details.
+
+  You should have received a copy of the GNU Library General Public License
+  along with GPGME++; see the file COPYING.LIB.  If not, write to the
+  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+*/
+
+#ifndef __GPGMEPP_GPGADDEXISTINGSUBKEYEDITINTERACTOR_H__
+#define __GPGMEPP_GPGADDEXISTINGSUBKEYEDITINTERACTOR_H__
+
+#include "editinteractor.h"
+
+#include <memory>
+
+namespace GpgME
+{
+
+class GPGMEPP_EXPORT GpgAddExistingSubkeyEditInteractor : public EditInteractor
+{
+public:
+    /** Edit interactor to add the existing subkey with keygrip \a keygrip
+     *  to the key a key edit operation is working on.
+     **/
+    explicit GpgAddExistingSubkeyEditInteractor(const std::string &keygrip);
+    ~GpgAddExistingSubkeyEditInteractor() override;
+
+    /** Sets the validity period of the added subkey. Use "0" for no expiration
+     *  or a simplified ISO date string ("yyyymmddThhmmss") for setting an
+     *  expiration date. */
+    void setExpiry(const std::string &timeString);
+
+private:
+    const char *action(Error &err) const override;
+    unsigned int nextState(unsigned int statusCode, const char *args, Error &err) const override;
+
+private:
+    class Private;
+    const std::unique_ptr<Private> d;
+};
+
+} // namespace GpgME
+
+#endif // __GPGMEPP_GPGADDEXISTINGSUBKEYEDITINTERACTOR_H__