def handle_mail(state: State, arguments: str) -> Reply:
if arguments[:5].upper() != "FROM:":
return handle_wrong_arguments()
try:
path, rest = parse_reverse_path(arguments[5:])
except ValueError as exc:
return handle_wrong_arguments(str(exc))
if not is_valid_smtp_arguments(rest):
return handle_wrong_arguments()
if not state.greeted:
return handle_no_greeting()
if not state.mail_allowed:
return handle_bad_command_sequence()
state.clear()
state.reverse_path = path
return SMTPStatus.OK, "Sender OK"
def handle_rset(state: State, arguments: str) -> Reply:
if arguments:
return handle_unexpected_arguments()
state.clear()
return SMTPStatus.OK, "OK"