1 files changed, 186 insertions, 0 deletions
diff --git a/smoketest/scripts/cli/test_nat66.py b/smoketest/scripts/cli/test_nat66.py
new file mode 100755
index 000000000..dca92c97d
--- /dev/null
+++ b/smoketest/scripts/cli/test_nat66.py
@@ -0,0 +1,186 @@
+#!/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 base_vyostest_shim import VyOSUnitTestSHIM
+
+from vyos.configsession import ConfigSession
+from vyos.configsession import ConfigSessionError
+from vyos.util import cmd
+from vyos.util import dict_search
+
+base_path = ['nat66']
+src_path = base_path + ['source']
+dst_path = base_path + ['destination']
+
+class TestNAT66(VyOSUnitTestSHIM.TestCase):
+    def setUp(self):
+        # ensure we can also run this test on a live system - so lets clean
+        # out the current configuration :)
+        self.cli_delete(base_path)
+
+    def tearDown(self):
+        self.cli_delete(base_path)
+        self.cli_commit()
+
+    def test_source_nat66(self):
+        source_prefix = 'fc00::/64'
+        translation_prefix = 'fc01::/64'
+        self.cli_set(src_path + ['rule', '1', 'outbound-interface', 'eth1'])
+        self.cli_set(src_path + ['rule', '1', 'source', 'prefix', source_prefix])
+        self.cli_set(src_path + ['rule', '1', 'translation', 'address', translation_prefix])
+
+        # check validate() - outbound-interface must be defined
+        self.cli_commit()
+
+        tmp = cmd('sudo nft -j list table ip6 nat')
+        data_json = jmespath.search('nftables[?rule].rule[?chain]', json.loads(tmp))
+
+        for idx in range(0, len(data_json)):
+            data = data_json[idx]
+
+            self.assertEqual(data['chain'], 'POSTROUTING')
+            self.assertEqual(data['family'], 'ip6')
+            self.assertEqual(data['table'], 'nat')
+
+            iface = dict_search('match.right', data['expr'][0])
+            address = dict_search('match.right.prefix.addr', data['expr'][2])
+            mask = dict_search('match.right.prefix.len', data['expr'][2])
+            translation_address = dict_search('snat.addr.prefix.addr', data['expr'][3])
+            translation_mask = dict_search('snat.addr.prefix.len', data['expr'][3])
+
+            self.assertEqual(iface, 'eth1')
+            # check for translation address
+            self.assertEqual(f'{translation_address}/{translation_mask}', translation_prefix)
+            self.assertEqual(f'{address}/{mask}', source_prefix)
+
+    def test_source_nat66_address(self):
+        source_prefix = 'fc00::/64'
+        translation_address = 'fc00::1'
+        self.cli_set(src_path + ['rule', '1', 'outbound-interface', 'eth1'])
+        self.cli_set(src_path + ['rule', '1', 'source', 'prefix', source_prefix])
+        self.cli_set(src_path + ['rule', '1', 'translation', 'address', translation_address])
+
+        # check validate() - outbound-interface must be defined
+        self.cli_commit()
+
+        tmp = cmd('sudo nft -j list table ip6 nat')
+        data_json = jmespath.search('nftables[?rule].rule[?chain]', json.loads(tmp))
+
+        for idx in range(0, len(data_json)):
+            data = data_json[idx]
+
+            self.assertEqual(data['chain'], 'POSTROUTING')
+            self.assertEqual(data['family'], 'ip6')
+            self.assertEqual(data['table'], 'nat')
+
+            iface = dict_search('match.right', data['expr'][0])
+            address = dict_search('match.right.prefix.addr', data['expr'][2])
+            mask = dict_search('match.right.prefix.len', data['expr'][2])
+            snat_address = dict_search('snat.addr', data['expr'][3])
+
+            self.assertEqual(iface, 'eth1')
+            # check for translation address
+            self.assertEqual(snat_address, translation_address)
+            self.assertEqual(f'{address}/{mask}', source_prefix)
+
+    def test_destination_nat66(self):
+        destination_address = 'fc00::1'
+        translation_address = 'fc01::1'
+        self.cli_set(dst_path + ['rule', '1', 'inbound-interface', 'eth1'])
+        self.cli_set(dst_path + ['rule', '1', 'destination', 'address', destination_address])
+        self.cli_set(dst_path + ['rule', '1', 'translation', 'address', translation_address])
+
+        # check validate() - outbound-interface must be defined
+        self.cli_commit()
+
+        tmp = cmd('sudo nft -j list table ip6 nat')
+        data_json = jmespath.search('nftables[?rule].rule[?chain]', json.loads(tmp))
+
+        for idx in range(0, len(data_json)):
+            data = data_json[idx]
+
+            self.assertEqual(data['chain'], 'PREROUTING')
+            self.assertEqual(data['family'], 'ip6')
+            self.assertEqual(data['table'], 'nat')
+
+            iface = dict_search('match.right', data['expr'][0])
+            dnat_addr = dict_search('dnat.addr', data['expr'][3])
+
+            self.assertEqual(dnat_addr, translation_address)
+            self.assertEqual(iface, 'eth1')
+
+    def test_destination_nat66_prefix(self):
+        destination_prefix = 'fc00::/64'
+        translation_prefix = 'fc01::/64'
+        self.cli_set(dst_path + ['rule', '1', 'inbound-interface', 'eth1'])
+        self.cli_set(dst_path + ['rule', '1', 'destination', 'address', destination_prefix])
+        self.cli_set(dst_path + ['rule', '1', 'translation', 'address', translation_prefix])
+
+        # check validate() - outbound-interface must be defined
+        self.cli_commit()
+
+        tmp = cmd('sudo nft -j list table ip6 nat')
+        data_json = jmespath.search('nftables[?rule].rule[?chain]', json.loads(tmp))
+
+        for idx in range(0, len(data_json)):
+            data = data_json[idx]
+
+            self.assertEqual(data['chain'], 'PREROUTING')
+            self.assertEqual(data['family'], 'ip6')
+            self.assertEqual(data['table'], 'nat')
+
+            iface = dict_search('match.right', data['expr'][0])
+            translation_address = dict_search('dnat.addr.prefix.addr', data['expr'][3])
+            translation_mask = dict_search('dnat.addr.prefix.len', data['expr'][3])
+
+            self.assertEqual(f'{translation_address}/{translation_mask}', translation_prefix)
+            self.assertEqual(iface, 'eth1')
+
+    def test_source_nat66_required_translation_prefix(self):
+        # T2813: Ensure translation address is specified
+        rule = '5'
+        source_prefix = 'fc00::/64'
+        self.cli_set(src_path + ['rule', rule, 'source', 'prefix', source_prefix])
+
+        # check validate() - outbound-interface must be defined
+        with self.assertRaises(ConfigSessionError):
+            self.cli_commit()
+        self.cli_set(src_path + ['rule', rule, 'outbound-interface', 'eth0'])
+
+        # check validate() - translation address not specified
+        with self.assertRaises(ConfigSessionError):
+            self.cli_commit()
+
+        self.cli_set(src_path + ['rule', rule, 'translation', 'address', 'masquerade'])
+        self.cli_commit()
+
+    def test_nat66_no_rules(self):
+        # T3206: deleting all rules but keep the direction 'destination' or
+        # 'source' resulteds in KeyError: 'rule'.
+        #
+        # Test that both 'nat destination' and 'nat source' nodes can exist
+        # without any rule
+        self.cli_set(src_path)
+        self.cli_set(dst_path)
+        self.cli_commit()
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)