+#!/usr/bin/env python
+#
+# 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)
Code Review / vpp.git / commitdiff