feat: Allow auto request keys via key sharing requests

lib/encryption/key_manager.dart

@@ -226,7 +226,13 @@ class KeyManager {
   }
 
   /// Attempt auto-request for a key
-  void maybeAutoRequest(String roomId, String sessionId, String senderKey) {
+  void maybeAutoRequest(
+    String roomId,
+    String sessionId,
+    String senderKey, {
+    bool tryOnlineBackup = true,
+    bool onlineKeyBackupOnly = true,
+  }) {
     final room = client.getRoomById(roomId);
     final requestIdent = '$roomId|$sessionId|$senderKey';
     if (room != null &&
@@ -234,8 +240,13 @@ class KeyManager {
         !client.isUnknownSession) {
       // do e2ee recovery
       _requestedSessionIds.add(requestIdent);
-      runInRoot(
+      runInRoot(() => request(
-          () => request(room, sessionId, senderKey, onlineKeyBackupOnly: true));
+            room,
+            sessionId,
+            senderKey,
+            tryOnlineBackup: tryOnlineBackup,
+            onlineKeyBackupOnly: onlineKeyBackupOnly,
+          ));
     }
   }
 

lib/src/timeline.dart

@@ -333,14 +333,22 @@ class Timeline {
   }
 
   /// Request the keys for undecryptable events of this timeline
-  void requestKeys() {
+  void requestKeys({
+    bool tryOnlineBackup = true,
+    bool onlineKeyBackupOnly = true,
+  }) {
     for (final event in events) {
       if (event.type == EventTypes.Encrypted &&
           event.messageType == MessageTypes.BadEncrypted &&
           event.content['can_request_session'] == true) {
         try {
-          room.client.encryption?.keyManager.maybeAutoRequest(room.id,
+          room.client.encryption?.keyManager.maybeAutoRequest(
-              event.content['session_id'], event.content['sender_key']);
+            room.id,
+            event.content['session_id'],
+            event.content['sender_key'],
+            tryOnlineBackup: tryOnlineBackup,
+            onlineKeyBackupOnly: onlineKeyBackupOnly,
+          );
         } catch (_) {
           // dispose
         }