1 files changed, 66 insertions, 0 deletions
diff --git a/lib/events/encryptedevent.h b/lib/events/encryptedevent.h
new file mode 100644
index 00000000..2f9e4422
--- /dev/null
+++ b/lib/events/encryptedevent.h
@@ -0,0 +1,66 @@
+#pragma once
+
+#include "roomevent.h"
+#include "e2ee.h"
+
+namespace QMatrixClient
+{
+    class Room;
+    /*
+     * While the specification states:
+     *
+     * "This event type is used when sending encrypted events.
+     * It can be used either within a room
+     * (in which case it will have all of the Room Event fields),
+     * or as a to-device event."
+     * "The encrypted payload can contain any message event."
+     * https://matrix.org/docs/spec/client_server/latest#id493
+     *
+     * -- for most of the cases the message event is the room message event.
+     * And even for the to-device events the context is for the room.
+     *
+     * So, to simplify integration to the timeline, EncryptedEvent is a RoomEvent inheritor.
+     * Strictly speaking though, it's not always a RoomEvent, but an Event in general.
+     * It's possible, because RoomEvent interface is similar to Event's one
+     * and doesn't add new restrictions, just provides additional features.
+     */
+    class EncryptedEvent : public RoomEvent
+    {
+        Q_GADGET
+    public:
+        DEFINE_EVENT_TYPEID("m.room.encrypted", EncryptedEvent)
+
+        /* In case with Olm, the encrypted content of the event is
+         * a map from the recipient Curve25519 identity key to ciphertext information */
+        explicit EncryptedEvent(const QJsonObject& ciphertext,
+                                const QString& senderKey);
+        /* In case with Megolm, device_id and session_id are required */
+        explicit EncryptedEvent(QByteArray ciphertext,
+                                const QString& senderKey,
+                                const QString& deviceId,
+                                const QString& sessionId);
+        explicit EncryptedEvent(const QJsonObject& obj);
+
+        QString algorithm() const
+        {
+            QString algo = content<QString>(AlgorithmKeyL);
+            if (!SupportedAlgorithms.contains(algo)) {
+                qWarning(MAIN) << "The EncryptedEvent's algorithm" << algo
+                               << "is not supported";
+            }
+            return  algo;
+        }
+        QByteArray ciphertext() const { return content<QString>(CiphertextKeyL).toLatin1(); }
+        QJsonObject ciphertext(const QString& identityKey) const
+        {
+            return content<QJsonObject>(CiphertextKeyL).value(identityKey).toObject();
+        }
+        QString senderKey() const { return content<QString>(SenderKeyKeyL); }
+
+        /* device_id and session_id are required with Megolm */
+        QString deviceId() const { return content<QString>(DeviceIdKeyL); }
+        QString sessionId() const { return content<QString>(SessionIdKeyL); }
+    };
+    REGISTER_EVENT_TYPE(EncryptedEvent)
+
+}  // namespace QMatrixClient