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test_service_dhcp-relay.py
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test_service_dhcp-relay.py
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#!/usr/bin/env python3
#
# Copyright (C) 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 vyos.configsession import ConfigSession
from vyos.configsession import ConfigSessionError
from vyos.ifconfig import Section
from vyos.util import cmd
from vyos.util import process_named_running
from vyos.util import read_file
PROCESS_NAME = 'dhcrelay'
RELAY_CONF = '/run/dhcp-relay/dhcrelay.conf'
base_path = ['service', 'dhcp-relay']
def get_config_value(key):
tmp = read_file(SSHD_CONF)
tmp = re.findall(f'\n?{key}\s+(.*)', tmp)
return tmp
class TestServiceDHCPRelay(unittest.TestCase):
def setUp(self):
self.session = ConfigSession(os.getpid())
# ensure we can also run this test on a live system - so lets clean
# out the current configuration :)
self.session.delete(base_path)
def tearDown(self):
self.session.delete(base_path)
self.session.commit()
del self.session
def test_relay_default(self):
max_size = '800'
hop_count = '20'
agents_packets = 'append'
servers = ['192.0.2.1', '192.0.2.2']
self.session.set(base_path + ['interface', 'lo'])
# check validate() - DHCP relay does not support the loopback interface
with self.assertRaises(ConfigSessionError):
self.session.commit()
self.session.delete(base_path + ['interface', 'lo'])
# activate DHCP relay on all ethernet interfaces
for tmp in Section.interfaces("ethernet"):
self.session.set(base_path + ['interface', tmp])
# check validate() - No DHCP relay server(s) configured
with self.assertRaises(ConfigSessionError):
self.session.commit()
for server in servers:
self.session.set(base_path + ['server', server])
self.session.set(base_path + ['relay-options', 'max-size', max_size])
self.session.set(base_path + ['relay-options', 'hop-count', hop_count])
self.session.set(base_path + ['relay-options', 'relay-agents-packets', agents_packets])
# commit changes
self.session.commit()
# Check configured port
config = read_file(RELAY_CONF)
# Test configured relay interfaces
for tmp in Section.interfaces("ethernet"):
self.assertIn(f'-i {tmp}', config)
# Test relay servers
for server in servers:
self.assertIn(f' {server}', config)
# Test max-size
self.assertIn(f'-A {max_size}', config)
# Hop count
self.assertIn(f'-c {hop_count}', config)
# relay-agents-packets
self.assertIn(f'-a -m {agents_packets}', config)
# Check for running process
self.assertTrue(process_named_running(PROCESS_NAME))
if __name__ == '__main__':
unittest.main()

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