Do not decrease MUC admin's role/affiliation

diff --git a/src/mod_muc/mod_muc_room.erl b/src/mod_muc/mod_muc_room.erl
index bf60f72e586a40c724e4d7002e6a6b786f39d710..f5a1f4a4e06d7859a78fe66f8765d77fd92aefbf 100644 (file)
--- a/src/mod_muc/mod_muc_room.erl
+++ b/src/mod_muc/mod_muc_room.erl
@@ -2519,6 +2519,11 @@ can_change_ra(_FAffiliation, _FRole,
     %% A room owner tries to add as persistent owner a
     %% participant that is already owner because he is MUC admin
     true;
+can_change_ra(_FAffiliation, _FRole,
+              _TAffiliation, _TRole,
+              _RoleorAffiliation, _Value, owner) ->
+    %% Nobody can decrease MUC admin's role/affiliation
+    false;
 can_change_ra(_FAffiliation, _FRole,
              TAffiliation, _TRole,
              affiliation, Value, _ServiceAf)