# # The Qubes OS Project, https://www.qubes-os.org/ # # Copyright (C) 2015-2020 # Marek Marczykowski-Górecki # Copyright (C) 2015 Wojtek Porczyk # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 of the License, or (at your option) any later version. # # This library 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 # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, see . # import asyncio import subprocess import sys import time import unittest from distutils import spawn import qubes.firewall import qubes.tests import qubes.vm from qubes.tests.integ.network import VmNetworkingMixin # noinspection PyAttributeOutsideInit,PyPep8Naming class VmIPv6NetworkingMixin(VmNetworkingMixin): test_ip6 = '2000:abcd::1' ping6_cmd = 'ping6 -W 1 -n -c 1 {target}' def setUp(self): super(VmIPv6NetworkingMixin, self).setUp() self.ping6_ip = self.ping6_cmd.format(target=self.test_ip6) self.ping6_name = self.ping6_cmd.format(target=self.test_name) def tearDown(self): # collect more info on failure (ipv4 info collected in parent) if self._outcome and not self._outcome.success: for vm in (self.testnetvm, self.testvm1, getattr(self, 'proxy', None)): if vm is None: continue self._run_cmd_and_log_output(vm, 'ip -6 r') self._run_cmd_and_log_output(vm, 'ip6tables -vnL') self._run_cmd_and_log_output(vm, 'ip6tables -vnL -t nat') self._run_cmd_and_log_output(vm, 'nft list table ip6 qubes-firewall') super().tearDown() def configure_netvm(self): ''' :type self: qubes.tests.SystemTestCase | VmIPv6NetworkingMixin ''' self.testnetvm.features['ipv6'] = True super(VmIPv6NetworkingMixin, self).configure_netvm() def run_netvm_cmd(cmd): try: self.loop.run_until_complete( self.testnetvm.run_for_stdio(cmd, user='root')) except subprocess.CalledProcessError as e: self.fail("Command '%s' failed: %s%s" % (cmd, e.stdout.decode(), e.stderr.decode())) run_netvm_cmd("ip addr add {}/128 dev test0".format(self.test_ip6)) run_netvm_cmd( "ip6tables -I INPUT -d {} -j ACCEPT".format(self.test_ip6)) # ignore failure self.run_cmd(self.testnetvm, "while pkill dnsmasq; do sleep 1; done") run_netvm_cmd( "dnsmasq -a {ip} -A /{name}/{ip} -A /{name}/{ip6} -i test0 -z". format(ip=self.test_ip, ip6=self.test_ip6, name=self.test_name)) def test_500_ipv6_simple_networking(self): ''' :type self: qubes.tests.SystemTestCase | VmIPv6NetworkingMixin ''' self.loop.run_until_complete(self.testvm1.start()) self.assertEqual(self.run_cmd(self.testvm1, self.ping6_ip), 0) self.assertEqual(self.run_cmd(self.testvm1, self.ping6_name), 0) def test_510_ipv6_simple_proxyvm(self): ''' :type self: qubes.tests.SystemTestCase | VmIPv6NetworkingMixin ''' self.proxy = self.app.add_new_vm(qubes.vm.appvm.AppVM, name=self.make_vm_name('proxy'), label='red') self.proxy.provides_network = True self.proxy.netvm = self.testnetvm self.loop.run_until_complete(self.proxy.create_on_disk()) self.testvm1.netvm = self.proxy self.app.save() self.loop.run_until_complete(self.testvm1.start()) self.assertTrue(self.proxy.is_running()) self.assertEqual(self.run_cmd(self.proxy, self.ping6_ip), 0, "Ping by IP from ProxyVM failed") self.assertEqual(self.run_cmd(self.proxy, self.ping6_name), 0, "Ping by name from ProxyVM failed") self.assertEqual(self.run_cmd(self.testvm1, self.ping6_ip), 0, "Ping by IP from AppVM failed") self.assertEqual(self.run_cmd(self.testvm1, self.ping6_name), 0, "Ping by IP from AppVM failed") @qubes.tests.expectedFailureIfTemplate('debian-7') @unittest.skipUnless(spawn.find_executable('xdotool'), "xdotool not installed") def test_520_ipv6_simple_proxyvm_nm(self): ''' :type self: qubes.tests.SystemTestCase | VmIPv6NetworkingMixin ''' self.proxy = self.app.add_new_vm(qubes.vm.appvm.AppVM, name=self.make_vm_name('proxy'), label='red') self.proxy.provides_network = True self.loop.run_until_complete(self.proxy.create_on_disk()) self.proxy.netvm = self.testnetvm self.proxy.features['service.network-manager'] = True self.testvm1.netvm = self.proxy self.app.save() self.loop.run_until_complete(self.testvm1.start()) self.assertTrue(self.proxy.is_running()) self.assertEqual(self.run_cmd(self.testvm1, self.ping6_ip), 0, "Ping by IP failed") self.assertEqual(self.run_cmd(self.testvm1, self.ping6_name), 0, "Ping by name failed") # reconnect to make sure that device was configured by NM self.assertEqual( self.run_cmd(self.proxy, "nmcli device disconnect eth0", user="user"), 0, "Failed to disconnect eth0 using nmcli") self.assertNotEqual(self.run_cmd(self.testvm1, self.ping6_ip), 0, "Network should be disabled, but apparently it isn't") self.assertEqual( self.run_cmd(self.proxy, 'nmcli connection up "VM uplink eth0" ifname eth0', user="user"), 0, "Failed to connect eth0 using nmcli") self.assertEqual(self.run_cmd(self.proxy, "nm-online", user="user"), 0, "Failed to wait for NM connection") # wait for duplicate-address-detection to complete - by default it has # 1s timeout time.sleep(2) # check for nm-applet presence self.assertEqual(subprocess.call([ 'xdotool', 'search', '--class', '{}:nm-applet'.format( self.proxy.name)], stdout=subprocess.DEVNULL), 0, "nm-applet window not found") self.assertEqual(self.run_cmd(self.testvm1, self.ping6_ip), 0, "Ping by IP failed (after NM reconnection") self.assertEqual(self.run_cmd(self.testvm1, self.ping6_name), 0, "Ping by name failed (after NM reconnection)") def test_530_ipv6_firewallvm_firewall(self): ''' :type self: qubes.tests.SystemTestCase | VmIPv6NetworkingMixin ''' self.proxy = self.app.add_new_vm(qubes.vm.appvm.AppVM, name=self.make_vm_name('proxy'), label='red') self.proxy.provides_network = True self.loop.run_until_complete(self.proxy.create_on_disk()) self.proxy.netvm = self.testnetvm self.testvm1.netvm = self.proxy self.app.save() # block all for first self.testvm1.firewall.rules = [qubes.firewall.Rule(action='drop')] self.testvm1.firewall.save() self.loop.run_until_complete(self.testvm1.start()) self.assertTrue(self.proxy.is_running()) server = self.loop.run_until_complete(self.testnetvm.run( 'socat TCP6-LISTEN:1234,fork EXEC:/bin/uname')) try: self.assertEqual(self.run_cmd(self.proxy, self.ping6_ip), 0, "Ping by IP from ProxyVM failed") self.assertEqual(self.run_cmd(self.proxy, self.ping6_name), 0, "Ping by name from ProxyVM failed") self.assertNotEqual(self.run_cmd(self.testvm1, self.ping6_ip), 0, "Ping by IP should be blocked") client6_cmd = "socat TCP:[{}]:1234 -".format(self.test_ip6) client4_cmd = "socat TCP:{}:1234 -".format(self.test_ip) self.assertNotEqual(self.run_cmd(self.testvm1, client6_cmd), 0, "TCP connection should be blocked") # block all except ICMP self.testvm1.firewall.rules = [( qubes.firewall.Rule(None, action='accept', proto='icmp') )] self.testvm1.firewall.save() # Ugly hack b/c there is no feedback when the rules are actually # applied time.sleep(3) self.assertEqual(self.run_cmd(self.testvm1, self.ping6_ip), 0, "Ping by IP failed (should be allowed now)") self.assertNotEqual(self.run_cmd(self.testvm1, self.ping6_name), 0, "Ping by name should be blocked") # all TCP still blocked self.testvm1.firewall.rules = [ qubes.firewall.Rule(None, action='accept', proto='icmp'), qubes.firewall.Rule(None, action='accept', specialtarget='dns'), ] self.testvm1.firewall.save() # Ugly hack b/c there is no feedback when the rules are actually # applied time.sleep(3) self.assertEqual(self.run_cmd(self.testvm1, self.ping6_name), 0, "Ping by name failed (should be allowed now)") self.assertNotEqual(self.run_cmd(self.testvm1, client6_cmd), 0, "TCP connection should be blocked") # block all except target self.testvm1.firewall.rules = [ qubes.firewall.Rule(None, action='accept', dsthost=self.test_ip6, proto='tcp', dstports=1234), ] self.testvm1.firewall.save() # Ugly hack b/c there is no feedback when the rules are actually # applied time.sleep(3) self.assertEqual(self.run_cmd(self.testvm1, client6_cmd), 0, "TCP connection failed (should be allowed now)") # block all except target - by name self.testvm1.firewall.rules = [ qubes.firewall.Rule(None, action='accept', dsthost=self.test_name, proto='tcp', dstports=1234), ] self.testvm1.firewall.save() # Ugly hack b/c there is no feedback when the rules are actually # applied time.sleep(3) self.assertEqual(self.run_cmd(self.testvm1, client6_cmd), 0, "TCP (IPv6) connection failed (should be allowed now)") self.assertEqual(self.run_cmd(self.testvm1, client4_cmd), 0, "TCP (IPv4) connection failed (should be allowed now)") # allow all except target self.testvm1.firewall.rules = [ qubes.firewall.Rule(None, action='drop', dsthost=self.test_ip6, proto='tcp', dstports=1234), qubes.firewall.Rule(action='accept'), ] self.testvm1.firewall.save() # Ugly hack b/c there is no feedback when the rules are actually # applied time.sleep(3) self.assertNotEqual(self.run_cmd(self.testvm1, client6_cmd), 0, "TCP connection should be blocked") finally: server.terminate() self.loop.run_until_complete(server.wait()) def test_540_ipv6_inter_vm(self): ''' :type self: qubes.tests.SystemTestCase | VmIPv6NetworkingMixin ''' self.proxy = self.app.add_new_vm(qubes.vm.appvm.AppVM, name=self.make_vm_name('proxy'), label='red') self.loop.run_until_complete(self.proxy.create_on_disk()) self.proxy.provides_network = True self.proxy.netvm = self.testnetvm self.testvm1.netvm = self.proxy self.testvm2 = self.app.add_new_vm(qubes.vm.appvm.AppVM, name=self.make_vm_name('vm2'), label='red') self.loop.run_until_complete(self.testvm2.create_on_disk()) self.testvm2.netvm = self.proxy self.app.save() self.loop.run_until_complete(asyncio.gather( self.testvm1.start(), self.testvm2.start())) self.assertNotEqual(self.run_cmd(self.testvm1, self.ping_cmd.format(target=self.testvm2.ip6)), 0) self.testvm2.netvm = self.testnetvm self.assertNotEqual(self.run_cmd(self.testvm1, self.ping_cmd.format(target=self.testvm2.ip6)), 0) self.assertNotEqual(self.run_cmd(self.testvm2, self.ping_cmd.format(target=self.testvm1.ip6)), 0) self.testvm1.netvm = self.testnetvm self.assertNotEqual(self.run_cmd(self.testvm1, self.ping_cmd.format(target=self.testvm2.ip6)), 0) self.assertNotEqual(self.run_cmd(self.testvm2, self.ping_cmd.format(target=self.testvm1.ip6)), 0) def test_550_ipv6_spoof_ip(self): '''Test if VM IP spoofing is blocked :type self: qubes.tests.SystemTestCase | VmIPv6NetworkingMixin ''' self.loop.run_until_complete(self.testvm1.start()) self.assertEqual(self.run_cmd(self.testvm1, self.ping6_ip), 0) # add a simple rule counting packets self.assertEqual(self.run_cmd(self.testnetvm, 'ip6tables -I INPUT -i vif+ ! -s {} -p icmpv6 -j LOG'.format( self.testvm1.ip6)), 0) self.loop.run_until_complete(self.testvm1.run_for_stdio( 'ip -6 addr flush dev eth0 && ' 'ip -6 addr add {}/128 dev eth0 && ' 'ip -6 route add default via {} dev eth0'.format( str(self.testvm1.visible_ip6) + '1', str(self.testvm1.visible_gateway6)), user='root')) self.assertNotEqual(self.run_cmd(self.testvm1, self.ping6_ip), 0, "Spoofed ping should be blocked") try: (output, _) = self.loop.run_until_complete( self.testnetvm.run_for_stdio('ip6tables -nxvL INPUT', user='root')) except subprocess.CalledProcessError: self.fail('ip6tables -nxvL INPUT failed') output = output.decode().splitlines() packets = output[2].lstrip().split()[0] self.assertEquals(packets, '0', 'Some packet hit the INPUT rule') def test_710_ipv6_custom_ip_simple(self): '''Custom AppVM IP :type self: qubes.tests.SystemTestCase | VmIPv6NetworkingMixin ''' self.testvm1.ip6 = '2000:aaaa:bbbb::1' self.app.save() self.loop.run_until_complete(self.testvm1.start()) self.assertEqual(self.run_cmd(self.testvm1, self.ping6_ip), 0) self.assertEqual(self.run_cmd(self.testvm1, self.ping6_name), 0) def test_711_ipv6_custom_ip_proxy(self): '''Custom ProxyVM IP :type self: qubes.tests.SystemTestCase | VmIPv6NetworkingMixin ''' self.proxy = self.app.add_new_vm(qubes.vm.appvm.AppVM, name=self.make_vm_name('proxy'), label='red') self.loop.run_until_complete(self.proxy.create_on_disk()) self.proxy.provides_network = True self.proxy.netvm = self.testnetvm self.testvm1.ip6 = '2000:aaaa:bbbb::1' self.testvm1.netvm = self.proxy self.app.save() self.loop.run_until_complete(self.testvm1.start()) self.assertEqual(self.run_cmd(self.testvm1, self.ping6_ip), 0) self.assertEqual(self.run_cmd(self.testvm1, self.ping6_name), 0) def test_712_ipv6_custom_ip_firewall(self): '''Custom VM IP and firewall :type self: qubes.tests.SystemTestCase | VmIPv6NetworkingMixin ''' self.testvm1.ip6 = '2000:aaaa:bbbb::1' self.proxy = self.app.add_new_vm(qubes.vm.appvm.AppVM, name=self.make_vm_name('proxy'), label='red') self.proxy.provides_network = True self.loop.run_until_complete(self.proxy.create_on_disk()) self.proxy.netvm = self.testnetvm self.testvm1.netvm = self.proxy self.app.save() # block all but ICMP and DNS self.testvm1.firewall.rules = [ qubes.firewall.Rule(None, action='accept', proto='icmp'), qubes.firewall.Rule(None, action='accept', specialtarget='dns'), ] self.testvm1.firewall.save() self.loop.run_until_complete(self.testvm1.start()) self.assertTrue(self.proxy.is_running()) server = self.loop.run_until_complete(self.testnetvm.run( 'socat TCP6-LISTEN:1234,fork EXEC:/bin/uname')) try: self.assertEqual(self.run_cmd(self.proxy, self.ping6_ip), 0, "Ping by IP from ProxyVM failed") self.assertEqual(self.run_cmd(self.proxy, self.ping6_name), 0, "Ping by name from ProxyVM failed") self.assertEqual(self.run_cmd(self.testvm1, self.ping6_ip), 0, "Ping by IP should be allowed") self.assertEqual(self.run_cmd(self.testvm1, self.ping6_name), 0, "Ping by name should be allowed") client_cmd = "socat TCP:[{}]:1234 -".format(self.test_ip6) self.assertNotEqual(self.run_cmd(self.testvm1, client_cmd), 0, "TCP connection should be blocked") finally: server.terminate() self.loop.run_until_complete(server.wait()) def create_testcases_for_templates(): yield from qubes.tests.create_testcases_for_templates('VmIPv6Networking', VmIPv6NetworkingMixin, qubes.tests.SystemTestCase, module=sys.modules[__name__]) def load_tests(loader, tests, pattern): tests.addTests(loader.loadTestsFromNames( create_testcases_for_templates())) return tests qubes.tests.maybe_create_testcases_on_import(create_testcases_for_templates)