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