--- /dev/null
+#!/usr/bin/env python3
+#
+# networkd integration test
+# This uses temporary configuration in /run and temporary veth devices, and
+# does not write anything on disk or change any system configuration;
+# but it assumes (and checks at the beginning) that networkd is not currently
+# running.
+# This can be run on a normal installation, in QEMU, nspawn, or LXC.
+# ATTENTION: This uses the *installed* networkd, not the one from the built
+# source tree.
+#
+# (C) 2015 Canonical Ltd.
+# Author: Martin Pitt <martin.pitt@ubuntu.com>
+#
+# systemd 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.
+
+# systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
+
+import os
+import sys
+import time
+import unittest
+import tempfile
+import subprocess
+import shutil
+
+networkd_active = subprocess.call(['systemctl', 'is-active', '--quiet',
+ 'systemd-networkd']) == 0
+have_dnsmasq = shutil.which('dnsmasq')
+
+
+@unittest.skipIf(networkd_active,
+ 'networkd is already active')
+class ClientTestBase:
+ def setUp(self):
+ self.iface = 'test_eth42'
+ self.if_router = 'router_eth42'
+ self.workdir_obj = tempfile.TemporaryDirectory()
+ self.workdir = self.workdir_obj.name
+ self.config = '/run/systemd/network/test_eth42.network'
+ os.makedirs(os.path.dirname(self.config), exist_ok=True)
+
+ # avoid "Failed to open /dev/tty" errors in containers
+ os.environ['SYSTEMD_LOG_TARGET'] = 'journal'
+
+ # determine path to systemd-networkd-wait-online
+ for p in ['/usr/lib/systemd/systemd-networkd-wait-online',
+ '/lib/systemd/systemd-networkd-wait-online']:
+ if os.path.exists(p):
+ self.networkd_wait_online = p
+ break
+ else:
+ self.fail('systemd-networkd-wait-online not found')
+
+ # get current journal cursor
+ out = subprocess.check_output(['journalctl', '-b', '--quiet',
+ '--no-pager', '-n0', '--show-cursor'],
+ universal_newlines=True)
+ self.assertTrue(out.startswith('-- cursor:'))
+ self.journal_cursor = out.split()[-1]
+
+ def tearDown(self):
+ self.shutdown_iface()
+ if os.path.exists(self.config):
+ os.unlink(self.config)
+ subprocess.call(['systemctl', 'stop', 'systemd-networkd'])
+
+ def show_journal(self, unit):
+ '''Show journal of given unit since start of the test'''
+
+ print('---- %s ----' % unit)
+ sys.stdout.flush()
+ subprocess.call(['journalctl', '-b', '--no-pager', '--quiet',
+ '--cursor', self.journal_cursor, '-u', unit])
+
+ def create_iface(self, ipv6=False):
+ '''Create test interface with DHCP server behind it'''
+
+ raise NotImplementedError('must be implemented by a subclass')
+
+ def shutdown_iface(self):
+ '''Remove test interface and stop DHCP server'''
+
+ raise NotImplementedError('must be implemented by a subclass')
+
+ def print_server_log(self):
+ '''Print DHCP server log for debugging failures'''
+
+ raise NotImplementedError('must be implemented by a subclass')
+
+ def do_test(self, coldplug=True, ipv6=False, extra_opts='',
+ online_timeout=10, dhcp_mode='yes'):
+ with open(self.config, 'w') as f:
+ f.write('''[Match]
+Name=%s
+[Network]
+DHCP=%s
+%s''' % (self.iface, dhcp_mode, extra_opts))
+
+ if coldplug:
+ # create interface first, then start networkd
+ self.create_iface(ipv6=ipv6)
+ subprocess.check_call(['systemctl', 'start', 'systemd-networkd'])
+ else:
+ # start networkd first, then create interface
+ subprocess.check_call(['systemctl', 'start', 'systemd-networkd'])
+ self.create_iface(ipv6=ipv6)
+
+ try:
+ subprocess.check_call([self.networkd_wait_online, '--interface',
+ self.iface, '--timeout=%i' % online_timeout])
+
+ if ipv6:
+ # check iface state and IP 6 address; FIXME: we need to wait a bit
+ # longer, as the iface is "configured" already with IPv4 *or*
+ # IPv6, but we want to wait for both
+ for timeout in range(10):
+ out = subprocess.check_output(['ip', 'a', 'show', 'dev', self.iface])
+ if b'state UP' in out and b'inet6 2600' in out and b'inet 192.168' in out:
+ break
+ time.sleep(1)
+ else:
+ self.fail('timed out waiting for IPv6 configuration')
+
+ self.assertRegex(out, b'inet6 2600::.* scope global .*dynamic')
+ self.assertRegex(out, b'inet6 fe80::.* scope link')
+ else:
+ # should have link-local address on IPv6 only
+ out = subprocess.check_output(['ip', '-6', 'a', 'show', 'dev', self.iface])
+ self.assertRegex(out, b'inet6 fe80::.* scope link')
+ self.assertNotIn(b'scope global', out)
+
+ # should have IPv4 address
+ out = subprocess.check_output(['ip', '-4', 'a', 'show', 'dev', self.iface])
+ self.assertIn(b'state UP', out)
+ self.assertRegex(out, b'inet 192.168.5.\d+/.* scope global dynamic')
+
+ # check networkctl state
+ out = subprocess.check_output(['networkctl'])
+ self.assertRegex(out, ('%s\s+ether\s+routable\s+unmanaged' % self.if_router).encode())
+ self.assertRegex(out, ('%s\s+ether\s+routable\s+configured' % self.iface).encode())
+
+ out = subprocess.check_output(['networkctl', 'status', self.iface])
+ self.assertRegex(out, b'Type:\s+ether')
+ self.assertRegex(out, b'State:\s+routable.*configured')
+ self.assertRegex(out, b'Address:\s+192.168.5.\d+')
+ if ipv6:
+ self.assertRegex(out, b'2600::')
+ else:
+ self.assertNotIn(b'2600::', out)
+ self.assertRegex(out, b'fe80::')
+ self.assertRegex(out, b'Gateway:\s+192.168.5.1')
+ self.assertRegex(out, b'DNS:\s+192.168.5.1')
+ except (AssertionError, subprocess.CalledProcessError):
+ # show networkd status, journal, and DHCP server log on failure
+ with open(self.config) as f:
+ print('\n---- %s ----\n%s' % (self.config, f.read()))
+ print('---- interface status ----')
+ sys.stdout.flush()
+ subprocess.call(['ip', 'a', 'show', 'dev', self.iface])
+ print('---- networkctl status %s ----' % self.iface)
+ sys.stdout.flush()
+ subprocess.call(['networkctl', 'status', self.iface])
+ self.show_journal('systemd-networkd.service')
+ self.print_server_log()
+ raise
+
+ # verify resolv.conf if it gets dynamically managed
+ if os.path.islink('/etc/resolv.conf'):
+ for timeout in range(50):
+ with open('/etc/resolv.conf') as f:
+ contents = f.read()
+ if 'nameserver 192.168.5.1\n' in contents:
+ break
+ # resolv.conf can have at most three nameservers; if we already
+ # have three different ones, that's also okay
+ if contents.count('nameserver ') >= 3:
+ break
+ time.sleep(0.1)
+ else:
+ self.fail('nameserver 192.168.5.1 not found in /etc/resolv.conf')
+
+ if not coldplug:
+ # check post-down.d hook
+ self.shutdown_iface()
+
+ def test_coldplug_dhcp_yes_ip4(self):
+ # we have a 12s timeout on RA, so we need to wait longer
+ self.do_test(coldplug=True, ipv6=False, online_timeout=15)
+
+ def test_coldplug_dhcp_yes_ip4_no_ra(self):
+ # with disabling RA explicitly things should be fast
+ self.do_test(coldplug=True, ipv6=False,
+ extra_opts='IPv6AcceptRouterAdvertisements=False')
+
+ def test_coldplug_dhcp_ip4_only(self):
+ # we have a 12s timeout on RA, so we need to wait longer
+ self.do_test(coldplug=True, ipv6=False, dhcp_mode='ipv4',
+ online_timeout=15)
+
+ def test_coldplug_dhcp_ip4_only_no_ra(self):
+ # with disabling RA explicitly things should be fast
+ self.do_test(coldplug=True, ipv6=False, dhcp_mode='ipv4',
+ extra_opts='IPv6AcceptRouterAdvertisements=False')
+
+ def test_coldplug_dhcp_ip6(self):
+ self.do_test(coldplug=True, ipv6=True)
+
+ def test_hotplug_dhcp_ip4(self):
+ # With IPv4 only we have a 12s timeout on RA, so we need to wait longer
+ self.do_test(coldplug=False, ipv6=False, online_timeout=15)
+
+ def test_hotplug_dhcp_ip6(self):
+ self.do_test(coldplug=False, ipv6=True)
+
+
+@unittest.skipUnless(have_dnsmasq, 'dnsmasq not installed')
+class DnsmasqClientTest(ClientTestBase, unittest.TestCase):
+ '''Test networkd client against dnsmasq'''
+
+ def setUp(self):
+ super().setUp()
+ self.dnsmasq = None
+
+ def create_iface(self, ipv6=False):
+ '''Create test interface with DHCP server behind it'''
+
+ # add veth pair
+ subprocess.check_call(['ip', 'link', 'add', 'name', self.iface, 'type',
+ 'veth', 'peer', 'name', self.if_router])
+
+ # give our router an IP
+ subprocess.check_call(['ip', 'a', 'flush', 'dev', self.if_router])
+ subprocess.check_call(['ip', 'a', 'add', '192.168.5.1/24', 'dev', self.if_router])
+ if ipv6:
+ subprocess.check_call(['ip', 'a', 'add', '2600::1/64', 'dev', self.if_router])
+ subprocess.check_call(['ip', 'link', 'set', self.if_router, 'up'])
+
+ # add DHCP server
+ self.dnsmasq_log = os.path.join(self.workdir, 'dnsmasq.log')
+ lease_file = os.path.join(self.workdir, 'dnsmasq.leases')
+ if ipv6:
+ extra_opts = ['--enable-ra', '--dhcp-range=2600::10,2600::20']
+ else:
+ extra_opts = []
+ self.dnsmasq = subprocess.Popen(
+ ['dnsmasq', '--keep-in-foreground', '--log-queries',
+ '--log-facility=' + self.dnsmasq_log, '--conf-file=/dev/null',
+ '--dhcp-leasefile=' + lease_file, '--bind-interfaces',
+ '--interface=' + self.if_router, '--except-interface=lo',
+ '--dhcp-range=192.168.5.10,192.168.5.200'] + extra_opts)
+
+ def shutdown_iface(self):
+ '''Remove test interface and stop DHCP server'''
+
+ if self.if_router:
+ subprocess.check_call(['ip', 'link', 'del', 'dev', self.if_router])
+ self.if_router = None
+ if self.dnsmasq:
+ self.dnsmasq.kill()
+ self.dnsmasq.wait()
+ self.dnsmasq = None
+
+ def print_server_log(self):
+ '''Print DHCP server log for debugging failures'''
+
+ with open(self.dnsmasq_log) as f:
+ sys.stdout.write('\n\n---- dnsmasq log ----\n%s\n------\n\n' % f.read())
+
+
+class NetworkdClientTest(ClientTestBase, unittest.TestCase):
+ '''Test networkd client against networkd server'''
+
+ def setUp(self):
+ super().setUp()
+ self.dnsmasq = None
+
+ def create_iface(self, ipv6=False):
+ '''Create test interface with DHCP server behind it'''
+
+ # run "router-side" networkd in own mount namespace to shield it from
+ # "client-side" configuration and networkd
+ (fd, script) = tempfile.mkstemp(prefix='networkd-router.sh')
+ self.addCleanup(os.remove, script)
+ with os.fdopen(fd, 'w+') as f:
+ f.write('''#!/bin/sh -eu
+mkdir -p /run/systemd/network
+mkdir -p /run/systemd/netif
+mount -t tmpfs none /run/systemd/network
+mount -t tmpfs none /run/systemd/netif
+[ ! -e /run/dbus ] || mount -t tmpfs none /run/dbus
+# create router/client veth pair
+cat << EOF > /run/systemd/network/test.netdev
+[NetDev]
+Name=%(ifr)s
+Kind=veth
+
+[Peer]
+Name=%(ifc)s
+EOF
+
+cat << EOF > /run/systemd/network/test.network
+[Match]
+Name=%(ifr)s
+
+[Network]
+Address=192.168.5.1/24
+%(addr6)s
+DHCPServer=yes
+
+[DHCPServer]
+PoolOffset=10
+PoolSize=50
+DNS=192.168.5.1
+EOF
+
+# run networkd as in systemd-networkd.service
+exec $(systemctl cat systemd-networkd.service | sed -n '/^ExecStart=/ { s/^.*=//; p}')
+''' % {'ifr': self.if_router, 'ifc': self.iface, 'addr6': ipv6 and 'Address=2600::1/64' or ''})
+
+ os.fchmod(fd, 0o755)
+
+ subprocess.check_call(['systemd-run', '--unit=networkd-test-router.service',
+ '-p', 'InaccessibleDirectories=-/etc/systemd/network',
+ '-p', 'InaccessibleDirectories=-/run/systemd/network',
+ '-p', 'InaccessibleDirectories=-/run/systemd/netif',
+ '--service-type=notify', script])
+
+ # wait until devices got created
+ for timeout in range(50):
+ out = subprocess.check_output(['ip', 'a', 'show', 'dev', self.if_router])
+ if b'state UP' in out and b'scope global' in out:
+ break
+ time.sleep(0.1)
+
+ def shutdown_iface(self):
+ '''Remove test interface and stop DHCP server'''
+
+ if self.if_router:
+ subprocess.check_call(['systemctl', 'stop', 'networkd-test-router.service'])
+ # ensure failed transient unit does not stay around
+ subprocess.call(['systemctl', 'reset-failed', 'networkd-test-router.service'])
+ subprocess.call(['ip', 'link', 'del', 'dev', self.if_router])
+ self.if_router = None
+
+ def print_server_log(self):
+ '''Print DHCP server log for debugging failures'''
+
+ self.show_journal('networkd-test-router.service')
+
+ @unittest.skip('networkd does not have DHCPv6 server support')
+ def test_hotplug_dhcp_ip6(self):
+ pass
+
+ @unittest.skip('networkd does not have DHCPv6 server support')
+ def test_coldplug_dhcp_ip6(self):
+ pass
+
+
+if __name__ == '__main__':
+ unittest.main(testRunner=unittest.TextTestRunner(stream=sys.stdout,
+ verbosity=2))
projects / thirdparty / systemd.git / commitdiff
