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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/>.
# This is a Python hook script which is invoked whenever a PPPoE session goes
# "ip-up". It will call into our vyos.ifconfig library and will then execute
# common tasks for the PPPoE interface. The reason we have to "hook" this is
# that we can not create a pppoeX interface in advance in linux and then connect
# pppd to this already existing interface.
from sys import argv
from sys import exit
from syslog import syslog
from syslog import openlog
from syslog import LOG_PID
from syslog import LOG_INFO
from vyos.configquery import ConfigTreeQuery
from vyos.ifconfig import PPPoEIf
from vyos.util import read_file
# When the ppp link comes up, this script is called with the following
# parameters
# $1 the interface name used by pppd (e.g. ppp3)
# $2 the tty device name
# $3 the tty device speed
# $4 the local IP address for the interface
# $5 the remote IP address
# $6 the parameter specified by the 'ipparam' option to pppd
if (len(argv) < 7):
exit(1)
interface = argv[6]
dialer_pid = read_file(f'/var/run/{interface}.pid')
openlog(ident=f'pppd[{dialer_pid}]', facility=LOG_INFO)
syslog('executing ' + argv[0])
conf = ConfigTreeQuery()
pppoe = conf.get_config_dict(['interfaces', 'pppoe', argv[6]],
get_first_key=True, key_mangling=('-', '_'))
pppoe['ifname'] = argv[6]
p = PPPoEIf(pppoe['ifname'])
p.update(pppoe)
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