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#!/usr/bin/env python3
#
# Copyright (C) 2020-2021 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 os
import argparse
from psutil import process_iter
from vyos.util import call
from vyos.util import DEVNULL
from vyos.util import is_wwan_connected
def check_ppp_interface(interface):
if not os.path.isfile(f'/etc/ppp/peers/{interface}'):
print(f'Interface {interface} does not exist!')
exit(1)
def check_ppp_running(interface):
""" Check if PPP process is running in the interface in question """
for p in process_iter():
if "pppd" in p.name():
if interface in p.cmdline():
return True
return False
def connect(interface):
""" Connect dialer interface """
if interface.startswith('ppp'):
check_ppp_interface(interface)
# Check if interface is already dialed
if os.path.isdir(f'/sys/class/net/{interface}'):
print(f'Interface {interface}: already connected!')
elif check_ppp_running(interface):
print(f'Interface {interface}: connection is beeing established!')
else:
print(f'Interface {interface}: connecting...')
call(f'systemctl restart ppp@{interface}.service')
elif interface.startswith('wwan'):
if is_wwan_connected(interface):
print(f'Interface {interface}: already connected!')
else:
call(f'VYOS_TAGNODE_VALUE={interface} /usr/libexec/vyos/conf_mode/interfaces-wwan.py')
else:
print(f'Unknown interface {interface}, can not connect. Aborting!')
def disconnect(interface):
""" Disconnect dialer interface """
if interface.startswith('ppp'):
check_ppp_interface(interface)
# Check if interface is already down
if not check_ppp_running(interface):
print(f'Interface {interface}: connection is already down')
else:
print(f'Interface {interface}: disconnecting...')
call(f'systemctl stop ppp@{interface}.service')
elif interface.startswith('wwan'):
if not is_wwan_connected(interface):
print(f'Interface {interface}: connection is already down')
else:
modem = interface.lstrip('wwan')
call(f'mmcli --modem {modem} --simple-disconnect', stdout=DEVNULL)
else:
print(f'Unknown interface {interface}, can not disconnect. Aborting!')
def main():
parser = argparse.ArgumentParser()
group = parser.add_mutually_exclusive_group()
group.add_argument("--connect", help="Bring up a connection-oriented network interface", action="store")
group.add_argument("--disconnect", help="Take down connection-oriented network interface", action="store")
args = parser.parse_args()
if args.connect:
connect(args.connect)
elif args.disconnect:
disconnect(args.disconnect)
else:
parser.print_help()
exit(0)
if __name__ == '__main__':
main()
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