From c5f7af9118a1426c5865c63f3c25498e0e4fb2c6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Damir=20Jeli=C4=87?= <poljar@termina.org.uk>
Date: Fri, 10 Apr 2020 09:58:13 +0200
Subject: [PATCH] crypto: Recreate group sessions if they are expired.

---
 src/crypto/machine.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/crypto/machine.rs b/src/crypto/machine.rs
index 1bdf2bf2..c00c4248 100644
--- a/src/crypto/machine.rs
+++ b/src/crypto/machine.rs
@@ -935,6 +935,18 @@ impl OlmMachine {
         }
 
         let megolm_session = self.outbound_group_session.get(room_id).unwrap();
+
+        let megolm_session = if megolm_session.expired() {
+            self.create_outbound_group_session(room_id).await?;
+            self.outbound_group_session.get(room_id).unwrap()
+        } else {
+            megolm_session
+        };
+
+        if megolm_session.shared() {
+            panic!("Session is already shared");
+        }
+
         let session_id = megolm_session.session_id().to_owned();
         megolm_session.mark_as_shared();