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test_interfaces_pppoe.py
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test_interfaces_pppoe.py
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#!/usr/bin/env python3
#
# Copyright (C) 2019-2020 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 os
import unittest
from psutil import process_iter
from vyos.configsession import ConfigSession, ConfigSessionError
from vyos.util import read_file
config_file = '/etc/ppp/peers/{}'
dhcp6c_config_file = '/run/dhcp6c/dhcp6c.{}.conf'
base_path = ['interfaces', 'pppoe']
def get_config_value(interface, key):
with open(config_file.format(interface), 'r') as f:
for line in f:
if line.startswith(key):
return list(line.split())
return []
def get_dhcp6c_config_value(interface, key):
tmp = read_file(dhcp6c_config_file.format(interface))
tmp = re.findall(r'\n?{}\s+(.*)'.format(key), tmp)
out = []
for item in tmp:
out.append(item.replace(';',''))
return out
class PPPoEInterfaceTest(unittest.TestCase):
def setUp(self):
self.session = ConfigSession(os.getpid())
self._interfaces = ['pppoe10', 'pppoe20', 'pppoe30']
self._source_interface = 'eth0'
def tearDown(self):
self.session.delete(base_path)
self.session.commit()
del self.session
def test_pppoe_client(self):
# Check if PPPoE dialer can be configured and runs
for interface in self._interfaces:
user = 'VyOS-user-' + interface
passwd = 'VyOS-passwd-' + interface
mtu = '1400'
self.session.set(base_path + [interface, 'authentication', 'user', user])
self.session.set(base_path + [interface, 'authentication', 'password', passwd])
self.session.set(base_path + [interface, 'default-route', 'auto'])
self.session.set(base_path + [interface, 'mtu', mtu])
self.session.set(base_path + [interface, 'no-peer-dns'])
# check validate() - a source-interface is required
with self.assertRaises(ConfigSessionError):
self.session.commit()
self.session.set(base_path + [interface, 'source-interface', self._source_interface])
# commit changes
self.session.commit()
# verify configuration file(s)
for interface in self._interfaces:
user = 'VyOS-user-' + interface
password = 'VyOS-passwd-' + interface
tmp = get_config_value(interface, 'mtu')[1]
self.assertEqual(tmp, mtu)
tmp = get_config_value(interface, 'user')[1].replace('"', '')
self.assertEqual(tmp, user)
tmp = get_config_value(interface, 'password')[1].replace('"', '')
self.assertEqual(tmp, password)
tmp = get_config_value(interface, 'ifname')[1]
self.assertEqual(tmp, interface)
# Check if ppp process is running in the interface in question
running = False
for p in process_iter():
if "pppd" in p.name():
if interface in p.cmdline():
running = True
self.assertTrue(running)
def test_pppoe_clent_disabled_interface(self):
# Check if PPPoE Client can be disabled
for interface in self._interfaces:
self.session.set(base_path + [interface, 'authentication', 'user', 'vyos'])
self.session.set(base_path + [interface, 'authentication', 'password', 'vyos'])
self.session.set(base_path + [interface, 'source-interface', self._source_interface])
self.session.set(base_path + [interface, 'disable'])
self.session.commit()
# Validate PPPoE client process
running = False
for interface in self._interfaces:
for proc in process_iter():
if interface in proc.cmdline():
running = True
self.assertFalse(running)
def test_pppoe_dhcpv6pd(self):
# Check if PPPoE dialer can be configured with DHCPv6-PD
address = '1'
sla_id = '0'
sla_len = '8'
for interface in self._interfaces:
self.session.set(base_path + [interface, 'authentication', 'user', 'vyos'])
self.session.set(base_path + [interface, 'authentication', 'password', 'vyos'])
self.session.set(base_path + [interface, 'default-route', 'none'])
self.session.set(base_path + [interface, 'no-peer-dns'])
self.session.set(base_path + [interface, 'source-interface', self._source_interface])
self.session.set(base_path + [interface, 'ipv6', 'address', 'autoconf'])
# prefix delegation stuff
dhcpv6_pd_base = base_path + [interface, 'dhcpv6-options', 'pd', '0']
self.session.set(dhcpv6_pd_base + ['length', '56'])
self.session.set(dhcpv6_pd_base + ['interface', self._source_interface, 'address', address])
self.session.set(dhcpv6_pd_base + ['interface', self._source_interface, 'sla-id', sla_id])
# commit changes
self.session.commit()
# verify "normal" PPPoE value - 1492 is default MTU
tmp = get_config_value(interface, 'mtu')[1]
self.assertEqual(tmp, '1492')
tmp = get_config_value(interface, 'user')[1].replace('"', '')
self.assertEqual(tmp, 'vyos')
tmp = get_config_value(interface, 'password')[1].replace('"', '')
self.assertEqual(tmp, 'vyos')
for param in ['+ipv6', 'ipv6cp-use-ipaddr']:
tmp = get_config_value(interface, param)[0]
self.assertEqual(tmp, param)
# verify DHCPv6 prefix delegation
# will return: ['delegation', '::/56 infinity;']
tmp = get_dhcp6c_config_value(interface, 'prefix')[1].split()[0] # mind the whitespace
self.assertEqual(tmp, '::/56')
tmp = get_dhcp6c_config_value(interface, 'prefix-interface')[0].split()[0]
self.assertEqual(tmp, self._source_interface)
tmp = get_dhcp6c_config_value(interface, 'ifid')[0]
self.assertEqual(tmp, address)
tmp = get_dhcp6c_config_value(interface, 'sla-id')[0]
self.assertEqual(tmp, sla_id)
tmp = get_dhcp6c_config_value(interface, 'sla-len')[0]
self.assertEqual(tmp, sla_len)
# Check if ppp process is running in the interface in question
running = False
for p in process_iter():
if "pppd" in p.name():
running = True
self.assertTrue(running)
# We can not check if wide-dhcpv6 process is running as it is started
# after the PPP interface gets a link to the ISP - but we can see if
# it would be started by the scripts
tmp = read_file(f'/etc/ppp/ipv6-up.d/1000-vyos-pppoe-{interface}')
tmp = re.findall(f'systemctl restart dhcp6c@{interface}.service', tmp)
self.assertTrue(tmp)
if __name__ == '__main__':
unittest.main(verbosity=2)

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