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vpn_ipsec.py
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#!/usr/bin/env python3
#
# Copyright (C) 2021-2022 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 re
import argparse
from subprocess import TimeoutExpired
from vyos.util import call
SWANCTL_CONF = '/etc/swanctl/swanctl.conf'
def get_peer_connections(peer, tunnel, return_all = False):
search = rf'^[\s]*(peer_{peer}_(tunnel_[\d]+|vti)).*'
matches = []
with open(SWANCTL_CONF, 'r') as f:
for line in f.readlines():
result = re.match(search, line)
if result:
suffix = f'tunnel_{tunnel}' if tunnel.isnumeric() else tunnel
if return_all or (result[2] == suffix):
matches.append(result[1])
return matches
def reset_peer(peer, tunnel):
if not peer:
print('Invalid peer, aborting')
return
conns = get_peer_connections(peer, tunnel, return_all = (not tunnel or tunnel == 'all'))
if not conns:
print('Tunnel(s) not found, aborting')
return
result = True
for conn in conns:
try:
call(f'/usr/sbin/ipsec down {conn}{{*}}', timeout = 10)
call(f'/usr/sbin/ipsec up {conn}', timeout = 10)
except TimeoutExpired as e:
print(f'Timed out while resetting {conn}')
result = False
print('Peer reset result: ' + ('success' if result else 'failed'))
def get_profile_connection(profile, tunnel = None):
search = rf'(dmvpn-{profile}-[\w]+)' if tunnel == 'all' else rf'(dmvpn-{profile}-{tunnel})'
with open(SWANCTL_CONF, 'r') as f:
for line in f.readlines():
result = re.search(search, line)
if result:
return result[1]
return None
def reset_profile(profile, tunnel):
if not profile:
print('Invalid profile, aborting')
return
if not tunnel:
print('Invalid tunnel, aborting')
return
conn = get_profile_connection(profile)
if not conn:
print('Profile not found, aborting')
return
call(f'/usr/sbin/ipsec down {conn}')
result = call(f'/usr/sbin/ipsec up {conn}')
print('Profile reset result: ' + ('success' if result == 0 else 'failed'))
def debug_peer(peer, tunnel):
peer = peer.replace(':', '-')
if not peer or peer == "all":
debug_commands = [
"ipsec statusall",
"swanctl -L",
"swanctl -l",
"swanctl -P",
"ip x sa show",
"ip x policy show",
"ip tunnel show",
"ip address",
"ip rule show",
"ip route | head -100",
"ip route show table 220"
]
for debug_cmd in debug_commands:
print(f'\n### {debug_cmd} ###')
call(debug_cmd)
return
if not tunnel or tunnel == 'all':
tunnel = ''
conns = get_peer_connections(peer, tunnel, return_all = (tunnel == '' or tunnel == 'all'))
if not conns:
print('Peer not found, aborting')
return
for conn in conns:
call(f'/usr/sbin/ipsec statusall | grep {conn}')
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('--action', help='Control action', required=True)
parser.add_argument('--name', help='Name for peer reset', required=False)
parser.add_argument('--tunnel', help='Specific tunnel of peer', required=False)
args = parser.parse_args()
if args.action == 'reset-peer':
reset_peer(args.name, args.tunnel)
elif args.action == "reset-profile":
reset_profile(args.name, args.tunnel)
elif args.action == "vpn-debug":
debug_peer(args.name, args.tunnel)

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