From b73bd2859ca9c3209f6da9c29346b95548b6b8c9 Mon Sep 17 00:00:00 2001
From: Nicolas Werner <nicolas.werner@hotmail.de>
Date: Sat, 7 Aug 2021 23:54:35 +0200
Subject: Protect against replay attacks

---
 src/Olm.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/Olm.h')

diff --git a/src/Olm.h b/src/Olm.h
index ac1a1617..ab86ca00 100644
--- a/src/Olm.h
+++ b/src/Olm.h
@@ -81,9 +81,11 @@ encrypt_group_message(const std::string &room_id,
                       const std::string &device_id,
                       nlohmann::json body);
 
+//! Decrypt an event. Use dont_write_db to prevent db writes when already in a write transaction.
 DecryptionResult
 decryptEvent(const MegolmSessionIndex &index,
-             const mtx::events::EncryptedEvent<mtx::events::msg::Encrypted> &event);
+             const mtx::events::EncryptedEvent<mtx::events::msg::Encrypted> &event,
+             bool dont_write_db = false);
 crypto::Trust
 calculate_trust(const std::string &user_id, const std::string &curve25519);
 
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