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snmp_ifmib.py
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snmp_ifmib.py
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#!/usr/bin/env python3
#
# Copyright (C) 2018 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# File: snmp_ifmib.py
# Purpose:
# Show SNMP MIB information
# Used by the "run show snmp mib" commands.
import sys
import argparse
import netifaces
import subprocess
from vyos.config import Config
parser = argparse.ArgumentParser(description='Retrieve SNMP interfaces information')
parser.add_argument('--ifindex', action='store', nargs='?', const='all', help='Show interface index')
parser.add_argument('--ifalias', action='store', nargs='?', const='all', help='Show interface aliase')
parser.add_argument('--ifdescr', action='store', nargs='?', const='all', help='Show interface description')
def show_ifindex(i):
proc = subprocess.Popen(['/bin/ip', 'link', 'show', i], stdout=subprocess.PIPE)
(out, err) = proc.communicate()
# convert output to string
string = out.decode("utf-8")
index = 'ifIndex = ' + string.split(':')[0]
return index.replace('\n', '')
def show_ifalias(i):
proc = subprocess.Popen(['/bin/ip', 'link', 'show', i], stdout=subprocess.PIPE)
(out, err) = proc.communicate()
# convert output to string
string = out.decode("utf-8")
if 'alias' in string:
alias = 'ifAlias = ' + string.split('alias')[1].lstrip()
else:
alias = 'ifAlias = ' + i
return alias.replace('\n', '')
def show_ifdescr(i):
ven_id = ''
dev_id = ''
try:
with open(r'/sys/class/net/' + i + '/device/vendor', 'r') as f:
ven_id = f.read().replace('\n', '')
except FileNotFoundError:
pass
try:
with open(r'/sys/class/net/' + i + '/device/device', 'r') as f:
dev_id = f.read().replace('\n', '')
except FileNotFoundError:
pass
if ven_id == '' and dev_id == '':
ret = 'ifDescr = {0}'.format(i)
return ret
device = str(ven_id) + ':' + str(dev_id)
proc = subprocess.Popen(['/usr/bin/lspci', '-mm', '-d', device], stdout=subprocess.PIPE)
(out, err) = proc.communicate()
# convert output to string
string = out.decode("utf-8").split('"')
vendor = string[3]
device = string[5]
ret = 'ifDescr = {0} {1}'.format(vendor, device)
return ret.replace('\n', '')
if __name__ == '__main__':
args = parser.parse_args()
# Do nothing if service is not configured
c = Config()
if not c.exists_effective('service snmp'):
print("SNMP service is not configured")
sys.exit(0)
if args.ifindex:
if args.ifindex == 'all':
for i in netifaces.interfaces():
print('{0}: {1}'.format(i, show_ifindex(i)))
else:
print('{0}: {1}'.format(args.ifindex, show_ifindex(args.ifindex)))
elif args.ifalias:
if args.ifalias == 'all':
for i in netifaces.interfaces():
print('{0}: {1}'.format(i, show_ifalias(i)))
else:
print('{0}: {1}'.format(args.ifalias, show_ifalias(args.ifalias)))
elif args.ifdescr:
if args.ifdescr == 'all':
for i in netifaces.interfaces():
print('{0}: {1}'.format(i, show_ifdescr(i)))
else:
print('{0}: {1}'.format(args.ifdescr, show_ifdescr(args.ifdescr)))
else:
#eth0: ifIndex = 2
# ifAlias = NET-MYBLL-MUCI-BACKBONE
# ifDescr = VMware VMXNET3 Ethernet Controller
#lo: ifIndex = 1
for i in netifaces.interfaces():
print('{0}:\t{1}'.format(i, show_ifindex(i)))
print('\t{0}'.format(show_ifalias(i)))
print('\t{0}'.format(show_ifdescr(i)))
sys.exit(1)

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