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-rwxr-xr-xsmoketest/scripts/cli/test_cgnat.py99
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)