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test_nat64.py
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test_nat64.py
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#!/usr/bin/env python3
#
# Copyright (C) 2023-2024 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 json
import os
import unittest
from base_vyostest_shim import VyOSUnitTestSHIM
base_path = ['nat64']
src_path = base_path + ['source']
jool_nat64_config = '/run/jool/instance-100.json'
class TestNAT64(VyOSUnitTestSHIM.TestCase):
@classmethod
def setUpClass(cls):
super(TestNAT64, cls).setUpClass()
# ensure we can also run this test on a live system - so lets clean
# out the current configuration :)
cls.cli_delete(cls, base_path)
def tearDown(self):
self.cli_delete(base_path)
self.cli_commit()
self.assertFalse(os.path.exists(jool_nat64_config))
def test_snat64(self):
rule = '100'
translation_rule = '10'
prefix_v6 = '64:ff9b::/96'
pool = '192.0.2.10'
pool_port = '1-65535'
self.cli_set(src_path + ['rule', rule, 'source', 'prefix', prefix_v6])
self.cli_set(
src_path
+ ['rule', rule, 'translation', 'pool', translation_rule, 'address', pool]
)
self.cli_set(
src_path
+ ['rule', rule, 'translation', 'pool', translation_rule, 'port', pool_port]
)
self.cli_commit()
# Load the JSON file
with open(f'/run/jool/instance-{rule}.json', 'r') as json_file:
config_data = json.load(json_file)
# Assertions based on the content of the JSON file
self.assertEqual(config_data['instance'], f'instance-{rule}')
self.assertEqual(config_data['framework'], 'netfilter')
self.assertEqual(config_data['global']['pool6'], prefix_v6)
self.assertTrue(config_data['global']['manually-enabled'])
# Check the pool4 entries
pool4_entries = config_data.get('pool4', [])
self.assertIsInstance(pool4_entries, list)
self.assertGreater(len(pool4_entries), 0)
for entry in pool4_entries:
self.assertIn('protocol', entry)
self.assertIn('prefix', entry)
self.assertIn('port range', entry)
protocol = entry['protocol']
prefix = entry['prefix']
port_range = entry['port range']
if protocol == 'ICMP':
self.assertEqual(prefix, pool)
self.assertEqual(port_range, pool_port)
elif protocol == 'UDP':
self.assertEqual(prefix, pool)
self.assertEqual(port_range, pool_port)
elif protocol == 'TCP':
self.assertEqual(prefix, pool)
self.assertEqual(port_range, pool_port)
else:
self.fail(f'Unexpected protocol: {protocol}')
if __name__ == '__main__':
unittest.main(verbosity=2)

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