tiramisu/tiramisu/option/broadcastoption.py

68 lines
2.7 KiB
Python

# -*- coding: utf-8 -*-
# Copyright (C) 2017-2019 Team tiramisu (see AUTHORS for all contributors)
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# The original `Config` design model is unproudly borrowed from
# the rough pypy's guys: http://codespeak.net/svn/pypy/dist/pypy/config/
# the whole pypy projet is under MIT licence
# ____________________________________________________________
from ipaddress import ip_address, IPv4Address, ip_network
from ..error import ConfigError
from ..setting import undefined, Undefined, OptionBag
from ..i18n import _
from .option import Option
class BroadcastOption(Option):
__slots__ = tuple()
_display_name = _('broadcast address')
def _validate(self,
value: str,
option_bag: OptionBag,
current_opt: Option=Undefined) -> None:
if not isinstance(value, str):
raise ValueError(_('invalid string'))
if value.count('.') != 3:
raise ValueError()
for val in value.split('.'):
if val.startswith("0") and len(val) > 1:
raise ValueError()
try:
if not isinstance(ip_address(value), IPv4Address):
raise ValueError()
except ValueError:
raise ValueError()
def _cons_broadcast(self,
current_opt,
opts,
vals,
warnings_only,
context):
if len(vals) != 3:
raise ConfigError(_('invalid len for vals'))
if None in vals:
return
broadcast, network, netmask = vals
if ip_network('{0}/{1}'.format(network, netmask)).broadcast_address != ip_address(broadcast):
raise ValueError(_('broadcast "{4}" invalid with network {0}/{1} ("{2}"/"{3}")'
'').format(network,
netmask,
opts[1].impl_get_display_name(),
opts[2].impl_get_display_name(),
broadcast))