diff options
| -rwxr-xr-x | smoketest/scripts/cli/test_cgnat.py | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/smoketest/scripts/cli/test_cgnat.py b/smoketest/scripts/cli/test_cgnat.py new file mode 100755 index 000000000..c65c58820 --- /dev/null +++ b/smoketest/scripts/cli/test_cgnat.py @@ -0,0 +1,99 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 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 os +import unittest + +from base_vyostest_shim import VyOSUnitTestSHIM +from vyos.configsession import ConfigSessionError + + +base_path = ['nat', 'cgnat'] +nftables_cgnat_config = '/run/nftables-cgnat.nft' + + +class TestCGNAT(VyOSUnitTestSHIM.TestCase): + @classmethod + def setUpClass(cls): + super(TestCGNAT, 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(nftables_cgnat_config)) + + def test_cgnat(self): + internal_name = 'vyos-int-01' + external_name = 'vyos-ext-01' + internal_net = '100.64.0.0/29' + external_net = '192.0.2.1-192.0.2.2' + external_ports = '40000-60000' + ports_per_subscriber = '5000' + rule = '100' + + nftables_search = [ + ['map tcp_nat_map'], + ['map udp_nat_map'], + ['map icmp_nat_map'], + ['map other_nat_map'], + ['100.64.0.0 : 192.0.2.1 . 40000-44999'], + ['100.64.0.1 : 192.0.2.1 . 45000-49999'], + ['100.64.0.2 : 192.0.2.1 . 50000-54999'], + ['100.64.0.3 : 192.0.2.1 . 55000-59999'], + ['100.64.0.4 : 192.0.2.2 . 40000-44999'], + ['100.64.0.5 : 192.0.2.2 . 45000-49999'], + ['100.64.0.6 : 192.0.2.2 . 50000-54999'], + ['100.64.0.7 : 192.0.2.2 . 55000-59999'], + ['chain POSTROUTING'], + ['type nat hook postrouting priority srcnat'], + ['ip protocol tcp counter snat ip to ip saddr map @tcp_nat_map'], + ['ip protocol udp counter snat ip to ip saddr map @udp_nat_map'], + ['ip protocol icmp counter snat ip to ip saddr map @icmp_nat_map'], + ['counter snat ip to ip saddr map @other_nat_map'], + ] + + self.cli_set(base_path + ['pool', 'external', external_name, 'external-port-range', external_ports]) + self.cli_set(base_path + ['pool', 'external', external_name, 'range', external_net]) + + # allocation out of the available ports + with self.assertRaises(ConfigSessionError): + self.cli_set(base_path + ['pool', 'external', external_name, 'per-user-limit', 'port', '8000']) + self.cli_commit() + self.cli_set(base_path + ['pool', 'external', external_name, 'per-user-limit', 'port', ports_per_subscriber]) + + # internal pool not set + with self.assertRaises(ConfigSessionError): + self.cli_commit() + self.cli_set(base_path + ['pool', 'internal', internal_name, 'range', internal_net]) + + self.cli_set(base_path + ['rule', rule, 'source', 'pool', internal_name]) + # non-exist translation pool + with self.assertRaises(ConfigSessionError): + self.cli_set(base_path + ['rule', rule, 'translation', 'pool', 'fake-pool']) + self.cli_commit() + + self.cli_set(base_path + ['rule', rule, 'translation', 'pool', external_name]) + self.cli_commit() + + self.verify_nftables(nftables_search, 'ip cgnat', inverse=False, args='-s') + + +if __name__ == '__main__': + unittest.main(verbosity=2) |