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#!/usr/bin/env python3
#
# Copyright (C) 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 sys
from collections import OrderedDict
from hurry import filesize
from re import split as re_split
from tabulate import tabulate
from vyos.util import call
from vyos.util import convert_data
from vyos.util import seconds_to_human
import vyos.opmode
SWANCTL_CONF = '/etc/swanctl/swanctl.conf'
def _convert(text):
return int(text) if text.isdigit() else text.lower()
def _alphanum_key(key):
return [_convert(c) for c in re_split('([0-9]+)', str(key))]
def _get_vici_sas():
from vici import Session as vici_session
session = vici_session()
sas = list(session.list_sas())
return sas
def _get_raw_data_sas():
get_sas = _get_vici_sas()
sas = convert_data(get_sas)
return sas
def _get_formatted_output_sas(sas):
sa_data = []
for sa in sas:
for parent_sa in sa.values():
# create an item for each child-sa
for child_sa in parent_sa.get('child-sas', {}).values():
# prepare a list for output data
sa_out_name = sa_out_state = sa_out_uptime = sa_out_bytes = sa_out_packets = sa_out_remote_addr = sa_out_remote_id = sa_out_proposal = 'N/A'
# collect raw data
sa_name = child_sa.get('name')
sa_state = child_sa.get('state')
sa_uptime = child_sa.get('install-time')
sa_bytes_in = child_sa.get('bytes-in')
sa_bytes_out = child_sa.get('bytes-out')
sa_packets_in = child_sa.get('packets-in')
sa_packets_out = child_sa.get('packets-out')
sa_remote_addr = parent_sa.get('remote-host')
sa_remote_id = parent_sa.get('remote-id')
sa_proposal_encr_alg = child_sa.get('encr-alg')
sa_proposal_integ_alg = child_sa.get('integ-alg')
sa_proposal_encr_keysize = child_sa.get('encr-keysize')
sa_proposal_dh_group = child_sa.get('dh-group')
# format data to display
if sa_name:
sa_out_name = sa_name
if sa_state:
if sa_state == 'INSTALLED':
sa_out_state = 'up'
else:
sa_out_state = 'down'
if sa_uptime:
sa_out_uptime = seconds_to_human(sa_uptime)
if sa_bytes_in and sa_bytes_out:
bytes_in = filesize.size(int(sa_bytes_in))
bytes_out = filesize.size(int(sa_bytes_out))
sa_out_bytes = f'{bytes_in}/{bytes_out}'
if sa_packets_in and sa_packets_out:
packets_in = filesize.size(int(sa_packets_in),
system=filesize.si)
packets_out = filesize.size(int(sa_packets_out),
system=filesize.si)
packets_str = f'{packets_in}/{packets_out}'
sa_out_packets = re.sub(r'B', r'', packets_str)
if sa_remote_addr:
sa_out_remote_addr = sa_remote_addr
if sa_remote_id:
sa_out_remote_id = sa_remote_id
# format proposal
if sa_proposal_encr_alg:
sa_out_proposal = sa_proposal_encr_alg
if sa_proposal_encr_keysize:
sa_proposal_encr_keysize_str = sa_proposal_encr_keysize
sa_out_proposal = f'{sa_out_proposal}_{sa_proposal_encr_keysize_str}'
if sa_proposal_integ_alg:
sa_proposal_integ_alg_str = sa_proposal_integ_alg
sa_out_proposal = f'{sa_out_proposal}/{sa_proposal_integ_alg_str}'
if sa_proposal_dh_group:
sa_proposal_dh_group_str = sa_proposal_dh_group
sa_out_proposal = f'{sa_out_proposal}/{sa_proposal_dh_group_str}'
# add a new item to output data
sa_data.append([
sa_out_name, sa_out_state, sa_out_uptime, sa_out_bytes,
sa_out_packets, sa_out_remote_addr, sa_out_remote_id,
sa_out_proposal
])
headers = [
"Connection", "State", "Uptime", "Bytes In/Out", "Packets In/Out",
"Remote address", "Remote ID", "Proposal"
]
sa_data = sorted(sa_data, key=_alphanum_key)
output = tabulate(sa_data, headers)
return output
def get_peer_connections(peer, tunnel, return_all = False):
search = rf'^[\s]*({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: str, tunnel:str):
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'sudo /usr/sbin/ipsec down {conn}{{*}}', timeout = 10)
call(f'sudo /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 show_sa(raw: bool):
sa_data = _get_raw_data_sas()
if raw:
return sa_data
return _get_formatted_output_sas(sa_data)
if __name__ == '__main__':
try:
res = vyos.opmode.run(sys.modules[__name__])
if res:
print(res)
except (ValueError, vyos.opmode.Error) as e:
print(e)
sys.exit(1)
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