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# Copyright (C) 2013 Nippon Telegraph and Telephone Corporation.
# Copyright (C) 2013 YAMAMOTO Takashi <yamamoto at valinux co jp>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import netaddr
class AddressConverter(object):
def __init__(self, addr, strat, fallback=None, **kwargs):
self._addr = addr
self._strat = strat
self._fallback = fallback
self._addr_kwargs = kwargs
def text_to_bin(self, text):
try:
return self._addr(text, **self._addr_kwargs).packed
except Exception as e:
if self._fallback is None:
raise e
# text_to_bin is expected to return binary string under
# normal circumstances. See ofproto.oxx_fields._from_user.
ip = self._fallback(text, **self._addr_kwargs)
return ip.ip.packed, ip.netmask.packed
def bin_to_text(self, bin):
return str(self._addr(self._strat.packed_to_int(bin),
**self._addr_kwargs))
ipv4 = AddressConverter(netaddr.IPAddress, netaddr.strategy.ipv4,
fallback=netaddr.IPNetwork, version=4)
ipv6 = AddressConverter(netaddr.IPAddress, netaddr.strategy.ipv6,
fallback=netaddr.IPNetwork, version=6)
class mac_mydialect(netaddr.mac_unix):
word_fmt = '%.2x'
mac = AddressConverter(netaddr.EUI, netaddr.strategy.eui48, version=48,
dialect=mac_mydialect)
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