#!/usr/bin/env python3 # # Copyright (C) 2020-2021 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 . import os import re import unittest from base_interfaces_test import BasicInterfaceTest from netifaces import interfaces from vyos.configsession import ConfigSessionError from vyos.ifconfig import Section from vyos.util import cmd from vyos.util import read_file from vyos.util import process_named_running def get_config_value(interface, key): tmp = read_file(f'/run/wpa_supplicant/{interface}.conf') tmp = re.findall(r'\n?{}=(.*)'.format(key), tmp) return tmp[0] def get_cipher(interface): """ Returns the used encapsulation protocol for given interface. If interface does not exist, None is returned. """ if not os.path.exists(f'/sys/class/net/{interface}'): return None from json import loads tmp = loads(cmd(f'ip -d -j link show {interface}'))[0] return tmp['linkinfo']['info_data']['cipher_suite'].lower() class MACsecInterfaceTest(BasicInterfaceTest.BaseTest): @classmethod def setUpClass(cls): cls._test_ip = True cls._test_ipv6 = True cls._base_path = ['interfaces', 'macsec'] cls._options = { 'macsec0': ['source-interface eth0', 'security cipher gcm-aes-128'] } # if we have a physical eth1 interface, add a second macsec instance if 'eth1' in Section.interfaces('ethernet'): macsec = { 'macsec1': [f'source-interface eth1', 'security cipher gcm-aes-128'] } cls._options.update(macsec) cls._interfaces = list(cls._options) def test_macsec_encryption(self): # MACsec can be operating in authentication and encryption mode - both # using different mandatory settings, lets test encryption as the basic # authentication test has been performed using the base class tests mak_cak = '232e44b7fda6f8e2d88a07bf78a7aff4' mak_ckn = '40916f4b23e3d548ad27eedd2d10c6f98c2d21684699647d63d41b500dfe8836' replay_window = '64' for interface, option_value in self._options.items(): for option in option_value: if option.split()[0] == 'source-interface': src_interface = option.split()[1] self.session.set(self._base_path + [interface] + option.split()) # Encrypt link self.session.set(self._base_path + [interface, 'security', 'encrypt']) # check validate() - Physical source interface MTU must be higher then our MTU self.session.set(self._base_path + [interface, 'mtu', '1500']) with self.assertRaises(ConfigSessionError): self.session.commit() self.session.delete(self._base_path + [interface, 'mtu']) # check validate() - MACsec security keys mandartory when encryption is enabled with self.assertRaises(ConfigSessionError): self.session.commit() self.session.set(self._base_path + [interface, 'security', 'mka', 'cak', mak_cak]) # check validate() - MACsec security keys mandartory when encryption is enabled with self.assertRaises(ConfigSessionError): self.session.commit() self.session.set(self._base_path + [interface, 'security', 'mka', 'ckn', mak_ckn]) self.session.set(self._base_path + [interface, 'security', 'replay-window', replay_window]) # final commit of settings self.session.commit() tmp = get_config_value(src_interface, 'macsec_integ_only') self.assertTrue("0" in tmp) tmp = get_config_value(src_interface, 'mka_cak') self.assertTrue(mak_cak in tmp) tmp = get_config_value(src_interface, 'mka_ckn') self.assertTrue(mak_ckn in tmp) # check that the default priority of 255 is programmed tmp = get_config_value(src_interface, 'mka_priority') self.assertTrue("255" in tmp) tmp = get_config_value(src_interface, 'macsec_replay_window') self.assertTrue(replay_window in tmp) tmp = read_file(f'/sys/class/net/{interface}/mtu') self.assertEqual(tmp, '1460') # Check for running process self.assertTrue(process_named_running('wpa_supplicant')) def test_macsec_gcm_aes_128(self): interface = 'macsec1' cipher = 'gcm-aes-128' self.session.set(self._base_path + [interface]) # check validate() - source interface is mandatory with self.assertRaises(ConfigSessionError): self.session.commit() self.session.set(self._base_path + [interface, 'source-interface', 'eth0']) # check validate() - cipher is mandatory with self.assertRaises(ConfigSessionError): self.session.commit() self.session.set(self._base_path + [interface, 'security', 'cipher', cipher]) # final commit and verify self.session.commit() self.assertIn(interface, interfaces()) self.assertIn(interface, interfaces()) self.assertEqual(cipher, get_cipher(interface)) def test_macsec_gcm_aes_256(self): interface = 'macsec4' cipher = 'gcm-aes-256' self.session.set(self._base_path + [interface]) # check validate() - source interface is mandatory with self.assertRaises(ConfigSessionError): self.session.commit() self.session.set(self._base_path + [interface, 'source-interface', 'eth0']) # check validate() - cipher is mandatory with self.assertRaises(ConfigSessionError): self.session.commit() self.session.set(self._base_path + [interface, 'security', 'cipher', cipher]) # final commit and verify self.session.commit() self.assertIn(interface, interfaces()) self.assertEqual(cipher, get_cipher(interface)) def test_macsec_source_interface(self): # Ensure source-interface can bot be part of any other bond or bridge base_bridge = ['interfaces', 'bridge', 'br200'] base_bond = ['interfaces', 'bonding', 'bond200'] for interface, option_value in self._options.items(): for option in option_value: self.session.set(self._base_path + [interface] + option.split()) if option.split()[0] == 'source-interface': src_interface = option.split()[1] self.session.set(base_bridge + ['member', 'interface', src_interface]) # check validate() - Source interface must not already be a member of a bridge with self.assertRaises(ConfigSessionError): self.session.commit() self.session.delete(base_bridge) self.session.set(base_bond + ['member', 'interface', src_interface]) # check validate() - Source interface must not already be a member of a bridge with self.assertRaises(ConfigSessionError): self.session.commit() self.session.delete(base_bond) # final commit and verify self.session.commit() self.assertIn(interface, interfaces()) if __name__ == '__main__': unittest.main(verbosity=2)