From 82cffec29937e4449a75040485d5188f429b7b1e Mon Sep 17 00:00:00 2001
From: Tobias Fella <fella@posteo.de>
Date: Wed, 10 Nov 2021 16:29:11 +0100
Subject: Try decrypting existing messages when a new key is added

---
 lib/room.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'lib/room.cpp')

diff --git a/lib/room.cpp b/lib/room.cpp
index 688ba5d4..6c5a9d33 100644
--- a/lib/room.cpp
+++ b/lib/room.cpp
@@ -1596,6 +1596,14 @@ void Room::handleRoomKeyEvent(const RoomKeyEvent& roomKeyEvent,
                                   roomKeyEvent.sessionKey())) {
         qCWarning(E2EE) << "added new inboundGroupSession:"
                       << d->groupSessions.size();
+        for (unsigned long int i = 0; i < d->timeline.size(); i++) {
+            if (auto encryptedEvent = d->timeline[i].viewAs<EncryptedEvent>()) {
+                auto decrypted = decryptMessage(*encryptedEvent);
+                if(decrypted) {
+                    d->timeline[i].replaceEvent(std::move(decrypted));
+                }
+            }
+        }
     }
 #endif // Quotient_E2EE_ENABLED
 }
-- 
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