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#!/usr/bin/env python3
###############################################################################
# Copyright (c) 2017 Koren Lev (Cisco Systems), Yaron Yogev (Cisco Systems) #
# and others #
# #
# All rights reserved. This program and the accompanying materials #
# are made available under the terms of the Apache License, Version 2.0 #
# which accompanies this distribution, and is available at #
# http://www.apache.org/licenses/LICENSE-2.0 #
###############################################################################
import sys
import subprocess
from binary_converter import binary2str
def nic_not_found(name: str, output: str):
print("Error finding NIC {}{}{}\n".format(name, ': ' if output else '',
output))
return 2
if len(sys.argv) < 2:
print('name of interface must be specified')
exit(2)
nic_name = str(sys.argv[1])
rc = 0
try:
cmd = 'ip link show | grep -A1 "^[0-9]\+: {}:"'.format(nic_name)
out = subprocess.check_output([cmd], stderr=subprocess.STDOUT, shell=True)
out = binary2str(out)
lines = out.splitlines()
if not lines:
rc = nic_not_found(nic_name, '')
else:
line = lines[0]
if ' state UP ' not in line:
rc = 2
print(out)
except subprocess.CalledProcessError as e:
rc = nic_not_found(nic_name, binary2str(e.output))
exit(rc)
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