        def visit_Call(self, call):
            if call.func.id not in CALL_WHITELIST:
                raise Exception("invalid function: %s" % call.func.id)
The software constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.