MUC: Ensure allow MUC PM setting has valid value (fixes #1933) In case allow PM is set to "affiliated" or something other than a valid role name, but the user is not affiliated, the valid_roles lookup would return nil, triggering a comparison error. This ensures that the setting is validated going in and out of the database and that the "affiliated" case proceeds correctly. Also adds a compat mapping for the value "anyone", used in XEP-0045 and submitted by default by Gajim.

-- Enables SQL query logging
--
-- luacheck: ignore 213/uri

module:set_global();

local engines = module:shared("/*/sql/connections");

for uri, engine in pairs(engines) do
	engine:debug(true);
end

setmetatable(engines, {
	__newindex = function (t, uri, engine)
		engine:debug(true);
		rawset(t, uri, engine);
	end
});

function module.unload()
	setmetatable(engines, nil);
	for uri, engine in pairs(engines) do
		engine:debug(false);
	end
end