From a9e6e11d1f7d819159d0cad261545e3732158fc1 Mon Sep 17 00:00:00 2001
From: Andrew Ferrazzutti <andrewf@element.io>
Date: Fri, 14 Oct 2022 02:25:46 -0400
Subject: [PATCH] Block post-join actions on crypto setup

Requires https://github.com/turt2live/matrix-bot-sdk/pull/269
---
 src/Bridge.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Bridge.ts b/src/Bridge.ts
index bca441bd0..171789c69 100644
--- a/src/Bridge.ts
+++ b/src/Bridge.ts
@@ -905,6 +905,12 @@ export class Bridge {
             return;
         }
 
+        if (this.config.encryption) {
+            // Ensure crypto is aware of all members of this room before posting any messages,
+            // so that the bot can share room keys to all recipients first.
+            await this.as.botClient.crypto.onRoomJoin(roomId);
+        }
+
         const adminAccountData = await this.as.botIntent.underlyingClient.getSafeRoomAccountData<AdminAccountData>(
             BRIDGE_ROOM_TYPE, roomId,
         );