script links can't contain @

lib/Properties.hs

@@ -143,7 +143,9 @@ checkMapProperty p@(Property name _) = case name of
   _ | T.toLower name == "script" ->
       unwrapString p $ \str ->
         unless (("https://static.rc3.world/scripts" `isPrefixOf` str) &&
-                (not $ "/../" `isInfixOf` str))
+                (not $ "/../" `isInfixOf` str) &&
+                (not $ "%" `isInfixOf` str) &&
+                (not $ "@" `isInfixOf` str))
         $ forbid "only scripts hosted on static.rc3.world are allowed."
     | name `elem` ["jitsiRoom", "bbbRoom", "playAudio", "openWebsite"
                   , "url", "exitUrl", "silent", "getBadge"]