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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 os
import jmespath
import json
import unittest
from vyos.configsession import ConfigSession
from vyos.util import cmd
base_path = ['nat66']
snat_pattern = 'nftables[?rule].rule[?chain].{chain: chain, comment: comment, prefix: { network: expr[].match.right.prefix.addr | [0], prefix: expr[].match.right.prefix.len | [0]},saddr: {network: expr[].snat.addr.prefix.addr | [0], prefix: expr[].snat.addr.prefix.len | [0]}}'
class TestNAT66(unittest.TestCase):
def setUp(self):
# ensure we can also run this test on a live system - so lets clean
# out the current configuration :)
self.session = ConfigSession(os.getpid())
self.session.delete(base_path)
def tearDown(self):
self.session.delete(base_path)
self.session.commit()
def test_source_nat66(self):
path = base_path + ['source']
source_prefix = 'fc00::/64'
translation_prefix = 'fc00:2::/64'
self.session.set(path + ['rule', '1', 'outbound-interface', 'eth1'])
self.session.set(path + ['rule', '1', 'source', 'prefix', source_prefix])
self.session.set(path + ['rule', '1', 'translation', 'prefix', translation_prefix])
# check validate() - outbound-interface must be defined
self.session.commit()
tmp = cmd('sudo nft -j list table ip6 nat')
nftable_json = json.loads(tmp)
condensed_json = jmespath.search(snat_pattern, nftable_json)[0]
self.assertEqual(condensed_json['comment'], 'NPT-NAT-1')
self.assertEqual(condensed_json['prefix']['network'], source_prefix.split('/')[0])
self.assertEqual(str(condensed_json['prefix']['prefix']), source_prefix.split('/')[1])
self.assertEqual(condensed_json['saddr']['network'], translation_prefix.split('/')[0])
self.assertEqual(str(condensed_json['saddr']['prefix']), translation_prefix.split('/')[1])
if __name__ == '__main__':
unittest.main(verbosity=2)
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