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vpn_ike_sa.py
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vpn_ike_sa.py
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#!/usr/bin/env python3
#
# Copyright (C) 2021 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/>.
import argparse
import re
import sys
import vici
from vyos.util import process_named_running
ike_sa_peer_prefix = """\
Peer ID / IP Local ID / IP
------------ -------------"""
ike_sa_tunnel_prefix = """
State IKEVer Encrypt Hash D-H Group NAT-T A-Time L-Time
----- ------ ------- ---- --------- ----- ------ ------"""
def s(byte_string):
return str(byte_string, 'utf-8')
def ike_sa(peer, nat):
session = vici.Session()
sas = session.list_sas()
peers = []
for conn in sas:
for name, sa in conn.items():
if name.startswith('peer_') and name in peers:
continue
if nat and 'nat-local' not in sa:
continue
peers.append(name)
remote_str = f'{s(sa["remote-host"])} {s(sa["remote-id"])}' if s(sa['remote-id']) != '%any' else s(sa["remote-host"])
local_str = f'{s(sa["local-host"])} {s(sa["local-id"])}' if s(sa['local-id']) != '%any' else s(sa["local-host"])
print(ike_sa_peer_prefix)
print('%-39s %-39s' % (remote_str, local_str))
state = 'up' if 'state' in sa and s(sa['state']) == 'ESTABLISHED' else 'down'
version = 'IKEv' + s(sa['version'])
encryption = f'{s(sa["encr-alg"])}' if 'encr-alg' in sa else 'n/a'
if 'encr-keysize' in sa:
encryption += '_' + s(sa["encr-keysize"])
integrity = s(sa['integ-alg']) if 'integ-alg' in sa else 'n/a'
dh_group = s(sa['dh-group']) if 'dh-group' in sa else 'n/a'
natt = 'yes' if 'nat-local' in sa and s(sa['nat-local']) == 'yes' else 'no'
atime = s(sa['established']) if 'established' in sa else '0'
ltime = s(sa['rekey-time']) if 'rekey_time' in sa else '0'
print(ike_sa_tunnel_prefix)
print(' %-6s %-6s %-12s %-13s %-14s %-6s %-7s %-7s\n' % (state, version, encryption, integrity, dh_group, natt, atime, ltime))
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('--peer', help='Peer name', required=False)
parser.add_argument('--nat', help='NAT Traversal', required=False)
args = parser.parse_args()
if not process_named_running('charon-systemd'):
print("IPsec Process NOT Running")
sys.exit(0)
ike_sa(args.peer, args.nat)

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