diff options
Diffstat (limited to 'smoketest/scripts/cli/test_nat.py')
| -rwxr-xr-x | smoketest/scripts/cli/test_nat.py | 141 |
1 files changed, 67 insertions, 74 deletions
diff --git a/smoketest/scripts/cli/test_nat.py b/smoketest/scripts/cli/test_nat.py index 408facfb3..5863409be 100755 --- a/smoketest/scripts/cli/test_nat.py +++ b/smoketest/scripts/cli/test_nat.py @@ -26,6 +26,7 @@ from vyos.util import dict_search base_path = ['nat'] src_path = base_path + ['source'] dst_path = base_path + ['destination'] +static_path = base_path + ['static'] class TestNAT(VyOSUnitTestSHIM.TestCase): @classmethod @@ -40,10 +41,24 @@ class TestNAT(VyOSUnitTestSHIM.TestCase): self.cli_delete(base_path) self.cli_commit() + def verify_nftables(self, nftables_search, table, inverse=False, args=''): + nftables_output = cmd(f'sudo nft {args} list table {table}') + + for search in nftables_search: + matched = False + for line in nftables_output.split("\n"): + if all(item in line for item in search): + matched = True + break + self.assertTrue(not matched if inverse else matched, msg=search) + def test_snat(self): rules = ['100', '110', '120', '130', '200', '210', '220', '230'] outbound_iface_100 = 'eth0' outbound_iface_200 = 'eth1' + + nftables_search = ['jump VYOS_PRE_SNAT_HOOK'] + for rule in rules: network = f'192.168.{rule}.0/24' # depending of rule order we check either for source address for NAT @@ -52,51 +67,16 @@ class TestNAT(VyOSUnitTestSHIM.TestCase): self.cli_set(src_path + ['rule', rule, 'source', 'address', network]) self.cli_set(src_path + ['rule', rule, 'outbound-interface', outbound_iface_100]) self.cli_set(src_path + ['rule', rule, 'translation', 'address', 'masquerade']) + nftables_search.append([f'saddr {network}', f'oifname "{outbound_iface_100}"', 'masquerade']) else: self.cli_set(src_path + ['rule', rule, 'destination', 'address', network]) self.cli_set(src_path + ['rule', rule, 'outbound-interface', outbound_iface_200]) self.cli_set(src_path + ['rule', rule, 'exclude']) + nftables_search.append([f'daddr {network}', f'oifname "{outbound_iface_200}"', 'return']) self.cli_commit() - tmp = cmd('sudo nft -j list chain ip nat POSTROUTING') - data_json = jmespath.search('nftables[?rule].rule[?chain]', json.loads(tmp)) - - for idx in range(0, len(data_json)): - data = data_json[idx] - if idx == 0: - self.assertEqual(data['chain'], 'POSTROUTING') - self.assertEqual(data['family'], 'ip') - self.assertEqual(data['table'], 'nat') - - jump_target = dict_search('jump.target', data['expr'][1]) - self.assertEqual(jump_target,'VYOS_PRE_SNAT_HOOK') - else: - rule = str(rules[idx - 1]) - network = f'192.168.{rule}.0/24' - - self.assertEqual(data['chain'], 'POSTROUTING') - self.assertEqual(data['comment'], f'SRC-NAT-{rule}') - self.assertEqual(data['family'], 'ip') - self.assertEqual(data['table'], 'nat') - - iface = dict_search('match.right', data['expr'][0]) - direction = dict_search('match.left.payload.field', data['expr'][1]) - address = dict_search('match.right.prefix.addr', data['expr'][1]) - mask = dict_search('match.right.prefix.len', data['expr'][1]) - - if int(rule) < 200: - self.assertEqual(direction, 'saddr') - self.assertEqual(iface, outbound_iface_100) - # check for masquerade keyword - self.assertIn('masquerade', data['expr'][3]) - else: - self.assertEqual(direction, 'daddr') - self.assertEqual(iface, outbound_iface_200) - # check for return keyword due to 'exclude' - self.assertIn('return', data['expr'][3]) - - self.assertEqual(f'{address}/{mask}', network) + self.verify_nftables(nftables_search, 'ip vyos_nat') def test_dnat(self): rules = ['100', '110', '120', '130', '200', '210', '220', '230'] @@ -105,56 +85,29 @@ class TestNAT(VyOSUnitTestSHIM.TestCase): inbound_proto_100 = 'udp' inbound_proto_200 = 'tcp' + nftables_search = ['jump VYOS_PRE_DNAT_HOOK'] + for rule in rules: port = f'10{rule}' self.cli_set(dst_path + ['rule', rule, 'source', 'port', port]) self.cli_set(dst_path + ['rule', rule, 'translation', 'address', '192.0.2.1']) self.cli_set(dst_path + ['rule', rule, 'translation', 'port', port]) + rule_search = [f'dnat to 192.0.2.1:{port}'] if int(rule) < 200: self.cli_set(dst_path + ['rule', rule, 'protocol', inbound_proto_100]) self.cli_set(dst_path + ['rule', rule, 'inbound-interface', inbound_iface_100]) + rule_search.append(f'{inbound_proto_100} sport {port}') + rule_search.append(f'iifname "{inbound_iface_100}"') else: self.cli_set(dst_path + ['rule', rule, 'protocol', inbound_proto_200]) self.cli_set(dst_path + ['rule', rule, 'inbound-interface', inbound_iface_200]) + rule_search.append(f'iifname "{inbound_iface_200}"') - self.cli_commit() - - tmp = cmd('sudo nft -j list chain ip nat PREROUTING') - data_json = jmespath.search('nftables[?rule].rule[?chain]', json.loads(tmp)) - - for idx in range(0, len(data_json)): - data = data_json[idx] - if idx == 0: - self.assertEqual(data['chain'], 'PREROUTING') - self.assertEqual(data['family'], 'ip') - self.assertEqual(data['table'], 'nat') + nftables_search.append(rule_search) - jump_target = dict_search('jump.target', data['expr'][1]) - self.assertEqual(jump_target,'VYOS_PRE_DNAT_HOOK') - else: + self.cli_commit() - rule = str(rules[idx - 1]) - port = int(f'10{rule}') - - self.assertEqual(data['chain'], 'PREROUTING') - self.assertEqual(data['comment'].split()[0], f'DST-NAT-{rule}') - self.assertEqual(data['family'], 'ip') - self.assertEqual(data['table'], 'nat') - - iface = dict_search('match.right', data['expr'][0]) - direction = dict_search('match.left.payload.field', data['expr'][1]) - protocol = dict_search('match.left.payload.protocol', data['expr'][1]) - dnat_addr = dict_search('dnat.addr', data['expr'][3]) - dnat_port = dict_search('dnat.port', data['expr'][3]) - - self.assertEqual(direction, 'sport') - self.assertEqual(dnat_addr, '192.0.2.1') - self.assertEqual(dnat_port, port) - if int(rule) < 200: - self.assertEqual(iface, inbound_iface_100) - self.assertEqual(protocol, inbound_proto_100) - else: - self.assertEqual(iface, inbound_iface_200) + self.verify_nftables(nftables_search, 'ip vyos_nat') def test_snat_required_translation_address(self): # T2813: Ensure translation address is specified @@ -193,8 +146,48 @@ class TestNAT(VyOSUnitTestSHIM.TestCase): # without any rule self.cli_set(src_path) self.cli_set(dst_path) + self.cli_set(static_path) + self.cli_commit() + + def test_dnat_without_translation_address(self): + self.cli_set(dst_path + ['rule', '1', 'inbound-interface', 'eth1']) + self.cli_set(dst_path + ['rule', '1', 'destination', 'port', '443']) + self.cli_set(dst_path + ['rule', '1', 'protocol', 'tcp']) + self.cli_set(dst_path + ['rule', '1', 'translation', 'port', '443']) + + self.cli_commit() + + nftables_search = [ + ['iifname "eth1"', 'tcp dport 443', 'dnat to :443'] + ] + + self.verify_nftables(nftables_search, 'ip vyos_nat') + + def test_static_nat(self): + dst_addr_1 = '10.0.1.1' + translate_addr_1 = '192.168.1.1' + dst_addr_2 = '203.0.113.0/24' + translate_addr_2 = '192.0.2.0/24' + ifname = 'eth0' + + self.cli_set(static_path + ['rule', '10', 'destination', 'address', dst_addr_1]) + self.cli_set(static_path + ['rule', '10', 'inbound-interface', ifname]) + self.cli_set(static_path + ['rule', '10', 'translation', 'address', translate_addr_1]) + + self.cli_set(static_path + ['rule', '20', 'destination', 'address', dst_addr_2]) + self.cli_set(static_path + ['rule', '20', 'inbound-interface', ifname]) + self.cli_set(static_path + ['rule', '20', 'translation', 'address', translate_addr_2]) + self.cli_commit() + nftables_search = [ + [f'iifname "{ifname}"', f'ip daddr {dst_addr_1}', f'dnat to {translate_addr_1}'], + [f'oifname "{ifname}"', f'ip saddr {translate_addr_1}', f'snat to {dst_addr_1}'], + [f'iifname "{ifname}"', f'dnat ip prefix to ip daddr map {{ {dst_addr_2} : {translate_addr_2} }}'], + [f'oifname "{ifname}"', f'snat ip prefix to ip daddr map {{ {translate_addr_2} : {dst_addr_2} }}'] + ] + + self.verify_nftables(nftables_search, 'ip vyos_nat') if __name__ == '__main__': unittest.main(verbosity=2) |