81 lines
3.1 KiB
Python
81 lines
3.1 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2017 Team tiramisu (see AUTHORS for all contributors)
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published by the
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# Free Software Foundation, either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# The original `Config` design model is unproudly borrowed from
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# the rough pypy's guys: http://codespeak.net/svn/pypy/dist/pypy/config/
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# the whole pypy projet is under MIT licence
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# ____________________________________________________________
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from IPy import IP
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from ..error import ConfigError
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from ..setting import undefined
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from ..i18n import _
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from .option import Option
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class NetmaskOption(Option):
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"represents the choice of a netmask"
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__slots__ = tuple()
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_display_name = _('netmask address')
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def _validate(self, value, context=undefined, current_opt=undefined):
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err = self._impl_valid_unicode(value)
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if err:
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return err
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if value.count('.') != 3:
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return ValueError()
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for val in value.split('.'):
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if val.startswith("0") and len(val) > 1:
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return ValueError()
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try:
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IP('0.0.0.0/{0}'.format(value))
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except ValueError:
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return ValueError()
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def _cons_network_netmask(self, current_opt, opts, vals, warnings_only):
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#opts must be (netmask, network) options
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if None in vals:
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return
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return self.__cons_netmask(opts, vals[0], vals[1], False, warnings_only)
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def _cons_ip_netmask(self, current_opt, opts, vals, warnings_only):
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#opts must be (netmask, ip) options
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if None in vals:
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return
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return self.__cons_netmask(opts, vals[0], vals[1], True, warnings_only)
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def __cons_netmask(self, opts, val_netmask, val_ipnetwork, make_net,
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warnings_only):
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if len(opts) != 2:
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return ConfigError(_('invalid len for opts'))
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msg = None
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try:
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ip = IP('{0}/{1}'.format(val_ipnetwork, val_netmask),
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make_net=make_net)
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#if cidr == 32, ip same has network
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if make_net and ip.prefixlen() != 32:
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val_ip = IP(val_ipnetwork)
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if ip.net() == val_ip:
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msg = _("this is a network with netmask {0} ({1})")
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if ip.broadcast() == val_ip:
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msg = _("this is a broadcast with netmask {0} ({1})")
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except ValueError:
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if not make_net:
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msg = _('with netmask {0} ({1})')
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if msg is not None:
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return ValueError(msg.format(val_netmask, opts[1].impl_getname()))
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