1 files changed, 29 insertions, 0 deletions
diff --git a/lib/crypto/qolmsession.cpp b/lib/crypto/qolmsession.cpp
new file mode 100644
index 00000000..afa42728
--- /dev/null
+++ b/lib/crypto/qolmsession.cpp
@@ -0,0 +1,29 @@
+// SPDX-FileCopyrightText: 2021 Carl Schwan <carlschwan@kde.org>
+//
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
+#include "crypto/qolmsession.h"
+
+using namespace Quotient;
+
+std::optional<OlmMessage> fromTypeAndCipthertext(size_t messageType, const QByteArray &ciphertext)
+{
+    if (messageType == OLM_MESSAGE_TYPE_PRE_KEY) {
+        return PreKeyMessage { ciphertext };
+    } else if (messageType == OLM_MESSAGE_TYPE_MESSAGE) {
+        return Message { ciphertext };
+    }
+    return std::nullopt;
+}
+
+std::pair<OlmMessageType, QByteArray> toPair(const OlmMessage &message)
+{
+    return std::visit([](auto &arg) {
+        using T = std::decay_t<decltype(arg)>;
+        if constexpr (std::is_same_v<T, Message>) {
+            return std::make_pair<OlmMessageType, QByteArray>(MessageType, QByteArray(arg.message));
+        } else if constexpr (std::is_same_v<T, PreKeyMessage>) {
+            return std::make_pair<OlmMessageType, QByteArray>(PreKeyType, QByteArray(arg.message));
+        }
+    }, message);
+}