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#!/usr/bin/env python3
#
# Copyright (c) 2016 Cisco and/or its affiliates.
# 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 binascii
def mac_pton(s):
'''Convert MAC address as text to binary'''
return binascii.unhexlify(s.replace(':', ''))
def mac_ntop(binary):
'''Convert MAC address as binary to text'''
x = b':'.join(binascii.hexlify(binary)[i:i + 2]
for i in range(0, 12, 2))
return str(x.decode('ascii'))
class MACAddress():
def __init__(self, mac):
'''MAC Address as a text-string (aa:bb:cc:dd:ee:ff) or 6 bytes'''
# Of course Python 2 doesn't distinguish str from bytes
if type(mac) is bytes and len(mac) == 6:
self.mac_binary = mac
self.mac_string = mac_ntop(mac)
else:
self.mac_binary = mac_pton(mac)
self.mac_string = mac
@property
def packed(self):
return self.mac_binary
def __len__(self):
return 6
def __str__(self):
return self.mac_string
def __repr__(self):
return '%s(%s)' % (self.__class__.__name__, self.mac_string)
def __eq__(self, other):
if not isinstance(other, MACAddress):
try:
# if it looks like a mac address, we'll take it.
# (allows for equality with scapy hw-addresses)
return self.mac_binary == MACAddress(other).mac_binary
except Exception:
return NotImplemented
return self.mac_binary == other.mac_binary
def __ne__(self, other):
return not self == other
def __hash__(self):
return hash(self.mac_binary)
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