salt/tests/unit/utils/test_network.py

# -*- coding: utf-8 -*-
# Import Python libs
from __future__ import absolute_import, unicode_literals, print_function
import logging
import socket
import textwrap

# Import Salt Testing libs
from tests.support.unit import TestCase
from tests.support.mock import (
    MagicMock,
    mock_open,
    create_autospec,
    patch,
)

# Import salt libs
import salt.utils.network as network
import salt.exceptions
from salt._compat import ipaddress

log = logging.getLogger(__name__)

LINUX = '''\
eth0      Link encap:Ethernet  HWaddr e0:3f:49:85:6a:af
          inet addr:10.10.10.56  Bcast:10.10.10.255  Mask:255.255.252.0
          inet6 addr: fe80::e23f:49ff:fe85:6aaf/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:643363 errors:0 dropped:0 overruns:0 frame:0
          TX packets:196539 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:386388355 (368.4 MiB)  TX bytes:25600939 (24.4 MiB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:548901 errors:0 dropped:0 overruns:0 frame:0
          TX packets:548901 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:613479895 (585.0 MiB)  TX bytes:613479895 (585.0 MiB)
'''

FREEBSD = '''
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO>
        ether 00:30:48:ff:ff:ff
        inet 10.10.10.250 netmask 0xffffffe0 broadcast 10.10.10.255
        inet 10.10.10.56 netmask 0xffffffc0 broadcast 10.10.10.63
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
em1: flags=8c02<BROADCAST,OACTIVE,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO>
        ether 00:30:48:aa:aa:aa
        media: Ethernet autoselect
        status: no carrier
plip0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> metric 0 mtu 1500
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
        options=3<RXCSUM,TXCSUM>
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x8
        inet6 ::1 prefixlen 128
        inet 127.0.0.1 netmask 0xff000000
        nd6 options=3<PERFORMNUD,ACCEPT_RTADV>
tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1500
        options=80000<LINKSTATE>
        inet 10.12.0.1 --> 10.12.0.2 netmask 0xffffffff
        Opened by PID 1964
'''

SOLARIS = '''\
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
net0: flags=100001100943<UP,BROADCAST,RUNNING,PROMISC,MULTICAST,ROUTER,IPv4,PHYSRUNNING> mtu 1500 index 2
        inet 10.10.10.38 netmask ffffffe0 broadcast 10.10.10.63
ilbint0: flags=110001100843<UP,BROADCAST,RUNNING,MULTICAST,ROUTER,IPv4,VRRP,PHYSRUNNING> mtu 1500 index 3
        inet 10.6.0.11 netmask ffffff00 broadcast 10.6.0.255
ilbext0: flags=110001100843<UP,BROADCAST,RUNNING,MULTICAST,ROUTER,IPv4,VRRP,PHYSRUNNING> mtu 1500 index 4
        inet 10.10.11.11 netmask ffffffe0 broadcast 10.10.11.31
ilbext0:1: flags=110001100843<UP,BROADCAST,RUNNING,MULTICAST,ROUTER,IPv4,VRRP,PHYSRUNNING> mtu 1500 index 4
        inet 10.10.11.12 netmask ffffffe0 broadcast 10.10.11.31
vpn0: flags=1000011008d1<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST,ROUTER,IPv4,PHYSRUNNING> mtu 1480 index 5
        inet tunnel src 10.10.11.12 tunnel dst 10.10.5.5
        tunnel hop limit 64
        inet 10.6.0.14 --> 10.6.0.15 netmask ff000000
lo0: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1
        inet6 ::1/128
net0: flags=120002004941<UP,RUNNING,PROMISC,MULTICAST,DHCP,IPv6,PHYSRUNNING> mtu 1500 index 2
        inet6 fe80::221:9bff:fefd:2a22/10
ilbint0: flags=120002000840<RUNNING,MULTICAST,IPv6,PHYSRUNNING> mtu 1500 index 3
        inet6 ::/0
ilbext0: flags=120002000840<RUNNING,MULTICAST,IPv6,PHYSRUNNING> mtu 1500 index 4
        inet6 ::/0
vpn0: flags=120002200850<POINTOPOINT,RUNNING,MULTICAST,NONUD,IPv6,PHYSRUNNING> mtu 1480 index 5
        inet tunnel src 10.10.11.12 tunnel dst 10.10.5.5
        tunnel hop limit 64
        inet6 ::/0 --> fe80::b2d6:7c10
'''

NETBSD = '''\
vioif0: flags=0x8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
        ec_capabilities=1<VLAN_MTU>
        ec_enabled=0
        address: 00:a0:98:e6:83:18
        inet 192.168.1.80/24 broadcast 192.168.1.255 flags 0x0
        inet6 fe80::2a0:98ff:fee6:8318%vioif0/64 flags 0x0 scopeid 0x1
lo0: flags=0x8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33624
        inet 127.0.0.1/8 flags 0x0
        inet6 ::1/128 flags 0x20<NODAD>
        inet6 fe80::1%lo0/64 flags 0x0 scopeid 0x2
'''

FREEBSD_SOCKSTAT = '''\
USER    COMMAND     PID     FD  PROTO  LOCAL ADDRESS    FOREIGN ADDRESS
root    python2.7   1294    41  tcp4   127.0.0.1:61115  127.0.0.1:4506
'''

FREEBSD_SOCKSTAT_WITH_FAT_PID = '''\
USER     COMMAND    PID   FD PROTO  LOCAL ADDRESS    FOREIGN ADDRESS
salt-master python2.781106 35 tcp4  127.0.0.1:61115  127.0.0.1:4506
'''

NETLINK_SS = '''
State      Recv-Q Send-Q               Local Address:Port                 Peer Address:Port
ESTAB      0      0                    127.0.0.1:56726                    127.0.0.1:4505
ESTAB      0      0                    ::ffff:1.2.3.4:5678                ::ffff:1.2.3.4:4505
'''

IPV4_SUBNETS = {True: ('10.10.0.0/24',),
                False: ('10.10.0.0', '10.10.0.0/33', 'FOO', 9, '0.9.800.1000/24')}
IPV6_SUBNETS = {True: ('::1/128',),
                False: ('::1', '::1/129', 'FOO', 9, 'aj01::feac/64')}


class NetworkTestCase(TestCase):

    def test_sanitize_host(self):
        ret = network.sanitize_host('10.1./2.$3')
        self.assertEqual(ret, '10.1.2.3')

    def test_host_to_ips(self):
        '''
        NOTE: When this test fails it's usually because the IP address has
        changed. In these cases, we just need to update the IP address in the
        assertion.
        '''
        def _side_effect(host, *args):
            try:
                return {
                    'github.com': [
                        (2, 1, 6, '', ('192.30.255.112', 0)),
                        (2, 1, 6, '', ('192.30.255.113', 0)),
                    ],
                    'ipv6host.foo': [
                        (socket.AF_INET6, 1, 6, '', ('2001:a71::1', 0, 0, 0)),
                    ],
                }[host]
            except KeyError:
                raise socket.gaierror(-2, 'Name or service not known')

        getaddrinfo_mock = MagicMock(side_effect=_side_effect)
        with patch.object(socket, 'getaddrinfo', getaddrinfo_mock):
            # Test host that can be resolved
            ret = network.host_to_ips('github.com')
            self.assertEqual(ret, ['192.30.255.112', '192.30.255.113'])
            # Test ipv6
            ret = network.host_to_ips('ipv6host.foo')
            self.assertEqual(ret, ['2001:a71::1'])
            # Test host that can't be resolved
            ret = network.host_to_ips('someothersite.com')
            self.assertEqual(ret, None)

    def test_generate_minion_id(self):
        self.assertTrue(network.generate_minion_id())

    def test__generate_minion_id_with_unicode_in_etc_hosts(self):
        '''
        Test that unicode in /etc/hosts doesn't raise an error when
        _generate_minion_id() helper is called to gather the hosts.
        '''
        content = textwrap.dedent('''\
        # 以下为主机名解析
        ## ccc
        127.0.0.1       localhost thisismyhostname     # 本机
        ''')
        fopen_mock = mock_open(read_data={'/etc/hosts': content})
        with patch('salt.utils.files.fopen', fopen_mock):
            assert 'thisismyhostname' in network._generate_minion_id()

    def test_is_ip(self):
        self.assertTrue(network.is_ip('10.10.0.3'))
        self.assertFalse(network.is_ip('0.9.800.1000'))
        # Check 16-char-long unicode string
        # https://github.com/saltstack/salt/issues/51258
        self.assertFalse(network.is_ipv6('sixteen-char-str'))

    def test_is_ipv4(self):
        self.assertTrue(network.is_ipv4('10.10.0.3'))
        self.assertFalse(network.is_ipv4('10.100.1'))
        self.assertFalse(network.is_ipv4('2001:db8:0:1:1:1:1:1'))
        # Check 16-char-long unicode string
        # https://github.com/saltstack/salt/issues/51258
        self.assertFalse(network.is_ipv4('sixteen-char-str'))

    def test_is_ipv6(self):
        self.assertTrue(network.is_ipv6('2001:db8:0:1:1:1:1:1'))
        self.assertTrue(network.is_ipv6('0:0:0:0:0:0:0:1'))
        self.assertTrue(network.is_ipv6('::1'))
        self.assertTrue(network.is_ipv6('::'))
        self.assertTrue(network.is_ipv6('2001:0db8:85a3:0000:0000:8a2e:0370:7334'))
        self.assertTrue(network.is_ipv6('2001:0db8:85a3::8a2e:0370:7334'))
        self.assertFalse(network.is_ipv6('2001:0db8:0370:7334'))
        self.assertFalse(network.is_ipv6('2001:0db8:::0370:7334'))
        self.assertFalse(network.is_ipv6('10.0.1.2'))
        self.assertFalse(network.is_ipv6('2001.0db8.85a3.0000.0000.8a2e.0370.7334'))
        # Check 16-char-long unicode string
        # https://github.com/saltstack/salt/issues/51258
        self.assertFalse(network.is_ipv6('sixteen-char-str'))

    def test_parse_host_port(self):
        _ip = ipaddress.ip_address
        good_host_ports = {
            '10.10.0.3': (_ip('10.10.0.3').compressed, None),
            '10.10.0.3:1234': (_ip('10.10.0.3').compressed, 1234),
            '2001:0db8:85a3::8a2e:0370:7334': (_ip('2001:0db8:85a3::8a2e:0370:7334').compressed, None),
            '[2001:0db8:85a3::8a2e:0370:7334]:1234': (_ip('2001:0db8:85a3::8a2e:0370:7334').compressed, 1234),
            '2001:0db8:85a3::7334': (_ip('2001:0db8:85a3::7334').compressed, None),
            '[2001:0db8:85a3::7334]:1234': (_ip('2001:0db8:85a3::7334').compressed, 1234)
        }
        bad_host_ports = [
            '10.10.0.3/24',
            '10.10.0.3::1234',
            '2001:0db8:0370:7334',
            '2001:0db8:0370::7334]:1234',
            '2001:0db8:0370:0:a:b:c:d:1234'
        ]
        for host_port, assertion_value in good_host_ports.items():
            host = port = None
            host, port = network.parse_host_port(host_port)
            self.assertEqual((host, port), assertion_value)

        for host_port in bad_host_ports:
            try:
                self.assertRaises(ValueError, network.parse_host_port, host_port)
            except AssertionError as _e_:
                log.error('bad host_port value: "%s" failed to trigger ValueError exception', host_port)
                raise _e_

    def test_dns_check(self):
        hosts = [
            {'host': '10.10.0.3',
             'port': '',
             'mocked': [(2, 1, 6, '', ('10.10.0.3', 0))],
             'ret': '10.10.0.3'},
            {'host': '10.10.0.3',
             'port': '1234',
             'mocked': [(2, 1, 6, '', ('10.10.0.3', 0))],
             'ret': '10.10.0.3'},
            {'host': '2001:0db8:85a3::8a2e:0370:7334',
             'port': '',
             'mocked': [(10, 1, 6, '', ('2001:db8:85a3::8a2e:370:7334', 0, 0, 0))],
             'ret': '[2001:db8:85a3::8a2e:370:7334]'},
            {'host': '2001:0db8:85a3::8a2e:370:7334',
             'port': '1234',
             'mocked': [(10, 1, 6, '', ('2001:db8:85a3::8a2e:370:7334', 0, 0, 0))],
             'ret': '[2001:db8:85a3::8a2e:370:7334]'},
            {'host': 'salt-master',
             'port': '1234',
             'mocked': [(2, 1, 6, '', ('127.0.0.1', 0))],
             'ret': '127.0.0.1'},
        ]
        for host in hosts:
            with patch.object(socket, 'getaddrinfo', create_autospec(socket.getaddrinfo, return_value=host['mocked'])):
                with patch('socket.socket', create_autospec(socket.socket)):
                    ret = network.dns_check(host['host'], host['port'])
                    self.assertEqual(ret, host['ret'])

    def test_dns_check_ipv6_filter(self):
        # raise exception to skip everything after the getaddrinfo call
        with patch.object(socket, 'getaddrinfo',
                          create_autospec(socket.getaddrinfo, side_effect=Exception)) as getaddrinfo:
            for ipv6, param in [
                (None, socket.AF_UNSPEC),
                (True, socket.AF_INET6),
                (False, socket.AF_INET),
            ]:
                with self.assertRaises(Exception):
                    network.dns_check('foo', '1', ipv6=ipv6)
                getaddrinfo.assert_called_with('foo', '1', param, socket.SOCK_STREAM)

    def test_dns_check_errors(self):
        with patch.object(socket, 'getaddrinfo', create_autospec(socket.getaddrinfo, return_value=[])):
            with self.assertRaisesRegex(salt.exceptions.SaltSystemExit,
                                        "DNS lookup or connection check of 'foo' failed"):
                network.dns_check('foo', '1')

        with patch.object(socket, 'getaddrinfo', create_autospec(socket.getaddrinfo, side_effect=TypeError)):
            with self.assertRaisesRegex(salt.exceptions.SaltSystemExit,
                                        "Invalid or unresolveable address"):
                network.dns_check('foo', '1')

    def test_test_addrs(self):
        # subset of real data from getaddrinfo against saltstack.com
        addrinfo = [(30, 2, 17, '', ('2600:9000:21eb:a800:8:1031:abc0:93a1', 0, 0, 0)),
                    (30, 1, 6, '', ('2600:9000:21eb:a800:8:1031:abc0:93a1', 0, 0, 0)),
                    (30, 2, 17, '', ('2600:9000:21eb:b400:8:1031:abc0:93a1', 0, 0, 0)),
                    (30, 1, 6, '', ('2600:9000:21eb:b400:8:1031:abc0:93a1', 0, 0, 0)),
                    (2, 1, 6, '', ('13.35.99.52', 0)), (2, 2, 17, '', ('13.35.99.85', 0)),
                    (2, 1, 6, '', ('13.35.99.85', 0)), (2, 2, 17, '', ('13.35.99.122', 0))]
        with patch('socket.socket', create_autospec(socket.socket)) as s:
            # we connect to the first address
            addrs = network._test_addrs(addrinfo, 80)
            self.assertTrue(len(addrs) == 1)
            self.assertTrue(addrs[0] == addrinfo[0][4][0])

            # the first lookup fails, succeeds on next check
            s.side_effect = [socket.error, MagicMock()]
            addrs = network._test_addrs(addrinfo, 80)
            self.assertTrue(len(addrs) == 1)
            self.assertTrue(addrs[0] == addrinfo[2][4][0])

            # nothing can connect, but we've eliminated duplicates
            s.side_effect = socket.error
            addrs = network._test_addrs(addrinfo, 80)
            self.assertTrue(len(addrs) == 5)

    def test_is_subnet(self):
        for subnet_data in (IPV4_SUBNETS, IPV6_SUBNETS):
            for item in subnet_data[True]:
                log.debug('Testing that %s is a valid subnet', item)
                self.assertTrue(network.is_subnet(item))
            for item in subnet_data[False]:
                log.debug('Testing that %s is not a valid subnet', item)
                self.assertFalse(network.is_subnet(item))

    def test_is_ipv4_subnet(self):
        for item in IPV4_SUBNETS[True]:
            log.debug('Testing that %s is a valid subnet', item)
            self.assertTrue(network.is_ipv4_subnet(item))
        for item in IPV4_SUBNETS[False]:
            log.debug('Testing that %s is not a valid subnet', item)
            self.assertFalse(network.is_ipv4_subnet(item))

    def test_is_ipv6_subnet(self):
        for item in IPV6_SUBNETS[True]:
            log.debug('Testing that %s is a valid subnet', item)
            self.assertTrue(network.is_ipv6_subnet(item))
        for item in IPV6_SUBNETS[False]:
            log.debug('Testing that %s is not a valid subnet', item)
            self.assertFalse(network.is_ipv6_subnet(item))

    def test_cidr_to_ipv4_netmask(self):
        self.assertEqual(network.cidr_to_ipv4_netmask(24), '255.255.255.0')
        self.assertEqual(network.cidr_to_ipv4_netmask(21), '255.255.248.0')
        self.assertEqual(network.cidr_to_ipv4_netmask(17), '255.255.128.0')
        self.assertEqual(network.cidr_to_ipv4_netmask(9), '255.128.0.0')
        self.assertEqual(network.cidr_to_ipv4_netmask(36), '')
        self.assertEqual(network.cidr_to_ipv4_netmask('lol'), '')

    def test_number_of_set_bits_to_ipv4_netmask(self):
        set_bits_to_netmask = network._number_of_set_bits_to_ipv4_netmask(0xffffff00)
        self.assertEqual(set_bits_to_netmask, '255.255.255.0')
        set_bits_to_netmask = network._number_of_set_bits_to_ipv4_netmask(0xffff6400)

    def test_hex2ip(self):
        self.assertEqual(network.hex2ip('0x4A7D2B63'), '74.125.43.99')
        self.assertEqual(network.hex2ip('0x4A7D2B63', invert=True), '99.43.125.74')
        self.assertEqual(network.hex2ip('00000000000000000000FFFF7F000001'), '127.0.0.1')
        self.assertEqual(network.hex2ip('0000000000000000FFFF00000100007F', invert=True), '127.0.0.1')
        self.assertEqual(network.hex2ip('20010DB8000000000000000000000000'), '2001:db8::')
        self.assertEqual(network.hex2ip('B80D0120000000000000000000000000', invert=True), '2001:db8::')

    def test_interfaces_ifconfig_linux(self):
        interfaces = network._interfaces_ifconfig(LINUX)
        self.assertEqual(interfaces,
                         {'eth0': {'hwaddr': 'e0:3f:49:85:6a:af',
                                   'inet': [{'address': '10.10.10.56',
                                             'broadcast': '10.10.10.255',
                                             'netmask': '255.255.252.0'}],
                                   'inet6': [{'address': 'fe80::e23f:49ff:fe85:6aaf',
                                              'prefixlen': '64',
                                              'scope': 'link'}],
                                   'up': True},
                          'lo': {'inet': [{'address': '127.0.0.1',
                                           'netmask': '255.0.0.0'}],
                                 'inet6': [{'address': '::1',
                                            'prefixlen': '128',
                                            'scope': 'host'}],
                                 'up': True}}
        )

    def test_interfaces_ifconfig_freebsd(self):
        interfaces = network._interfaces_ifconfig(FREEBSD)
        self.assertEqual(interfaces,
                         {'': {'up': False},
                          'em0': {'hwaddr': '00:30:48:ff:ff:ff',
                                  'inet': [{'address': '10.10.10.250',
                                            'broadcast': '10.10.10.255',
                                            'netmask': '255.255.255.224'},
                                           {'address': '10.10.10.56',
                                            'broadcast': '10.10.10.63',
                                            'netmask': '255.255.255.192'}],
                                  'up': True},
                          'em1': {'hwaddr': '00:30:48:aa:aa:aa',
                                  'up': False},
                          'lo0': {'inet': [{'address': '127.0.0.1',
                                            'netmask': '255.0.0.0'}],
                                  'inet6': [{'address': 'fe80::1',
                                             'prefixlen': '64',
                                             'scope': '0x8'},
                                            {'address': '::1',
                                             'prefixlen': '128',
                                             'scope': None}],
                                  'up': True},
                          'plip0': {'up': False},
                          'tun0': {'inet': [{'address': '10.12.0.1',
                                             'netmask': '255.255.255.255'}],
                                   'up': True}}

        )

    def test_interfaces_ifconfig_solaris(self):
        with patch('salt.utils.platform.is_sunos', lambda: True):
            interfaces = network._interfaces_ifconfig(SOLARIS)
            expected_interfaces = {'ilbint0':
                                       {'inet6': [],
                                        'inet': [{'broadcast': '10.6.0.255',
                                                  'netmask': '255.255.255.0',
                                                  'address': '10.6.0.11'}],
                                        'up': True},
                                   'lo0':
                                       {'inet6': [{'prefixlen': '128',
                                                   'address': '::1'}],
                                       'inet': [{'netmask': '255.0.0.0',
                                                 'address': '127.0.0.1'}],
                                        'up': True},
                                   'ilbext0': {'inet6': [],
                                               'inet': [{'broadcast': '10.10.11.31',
                                                         'netmask': '255.255.255.224',
                                                         'address': '10.10.11.11'},
                                                        {'broadcast': '10.10.11.31',
                                                         'netmask': '255.255.255.224',
                                                         'address': '10.10.11.12'}],
                                               'up': True},
                                   'vpn0': {'inet6': [],
                                            'inet': [{'netmask': '255.0.0.0',
                                                      'address': '10.6.0.14'}],
                                            'up': True},
                                   'net0': {'inet6': [{'prefixlen': '10',
                                                       'address': 'fe80::221:9bff:fefd:2a22'}],
                                   'inet': [{'broadcast': '10.10.10.63',
                                             'netmask': '255.255.255.224',
                                             'address': '10.10.10.38'}],
                                            'up': True}}
            self.assertEqual(interfaces, expected_interfaces)

    def test_interfaces_ifconfig_netbsd(self):
        interfaces = network._netbsd_interfaces_ifconfig(NETBSD)
        self.assertEqual(interfaces,
                          {'lo0': {'inet': [{'address': '127.0.0.1', 'netmask': '255.0.0.0'}],
                                   'inet6': [{'address': 'fe80::1',
                                               'prefixlen': '64',
                                               'scope': 'lo0'}],
                                   'up': True},
                           'vioif0': {'hwaddr': '00:a0:98:e6:83:18',
                                      'inet': [{'address': '192.168.1.80',
                                                 'broadcast': '192.168.1.255',
                                                 'netmask': '255.255.255.0'}],
                                      'inet6': [{'address': 'fe80::2a0:98ff:fee6:8318',
                                                  'prefixlen': '64',
                                                  'scope': 'vioif0'}],
                                      'up': True}}
        )

    def test_freebsd_remotes_on(self):
        with patch('salt.utils.platform.is_sunos', lambda: False):
            with patch('salt.utils.platform.is_freebsd', lambda: True):
                with patch('subprocess.check_output',
                           return_value=FREEBSD_SOCKSTAT):
                    remotes = network._freebsd_remotes_on('4506', 'remote')
                    self.assertEqual(remotes, set(['127.0.0.1']))

    def test_freebsd_remotes_on_with_fat_pid(self):
        with patch('salt.utils.platform.is_sunos', lambda: False):
            with patch('salt.utils.platform.is_freebsd', lambda: True):
                with patch('subprocess.check_output',
                           return_value=FREEBSD_SOCKSTAT_WITH_FAT_PID):
                    remotes = network._freebsd_remotes_on('4506', 'remote')
                    self.assertEqual(remotes, set(['127.0.0.1']))

    def test_generate_minion_id_distinct(self):
        '''
        Test if minion IDs are distinct in the pool.

        :return:
        '''
        with patch('platform.node', MagicMock(return_value='nodename')), \
                patch('socket.gethostname', MagicMock(return_value='hostname')), \
                patch('socket.getfqdn', MagicMock(return_value='hostname.domainname.blank')), \
                patch('socket.getaddrinfo', MagicMock(return_value=[(2, 3, 0, 'attrname', ('127.0.1.1', 0))])), \
                patch('salt.utils.files.fopen', mock_open()), \
                patch('salt.utils.network.ip_addrs', MagicMock(return_value=['1.2.3.4', '5.6.7.8'])):
            self.assertEqual(network._generate_minion_id(),
                             ['hostname.domainname.blank', 'nodename', 'hostname', '1.2.3.4', '5.6.7.8'])

    def test_generate_minion_id_127_name(self):
        '''
        Test if minion IDs can be named 127.foo

        :return:
        '''
        with patch('platform.node', MagicMock(return_value='127')), \
                patch('socket.gethostname', MagicMock(return_value='127')), \
                patch('socket.getfqdn', MagicMock(return_value='127.domainname.blank')), \
                patch('socket.getaddrinfo', MagicMock(return_value=[(2, 3, 0, 'attrname', ('127.0.1.1', 0))])), \
                patch('salt.utils.files.fopen', mock_open()), \
                patch('salt.utils.network.ip_addrs', MagicMock(return_value=['1.2.3.4', '5.6.7.8'])):
            self.assertEqual(network._generate_minion_id(),
                             ['127.domainname.blank', '127', '1.2.3.4', '5.6.7.8'])

    def test_generate_minion_id_127_name_startswith(self):
        '''
        Test if minion IDs can be named starting from "127"

        :return:
        '''
        with patch('platform.node', MagicMock(return_value='127890')), \
                patch('socket.gethostname', MagicMock(return_value='127890')), \
                patch('socket.getfqdn', MagicMock(return_value='127890.domainname.blank')), \
                patch('socket.getaddrinfo', MagicMock(return_value=[(2, 3, 0, 'attrname', ('127.0.1.1', 0))])), \
                patch('salt.utils.files.fopen', mock_open()), \
                patch('salt.utils.network.ip_addrs', MagicMock(return_value=['1.2.3.4', '5.6.7.8'])):
            self.assertEqual(network._generate_minion_id(),
                             ['127890.domainname.blank', '127890', '1.2.3.4', '5.6.7.8'])

    def test_generate_minion_id_duplicate(self):
        '''
        Test if IP addresses in the minion IDs are distinct in the pool

        :return:
        '''
        with patch('platform.node', MagicMock(return_value='hostname')), \
                patch('socket.gethostname', MagicMock(return_value='hostname')), \
                patch('socket.getfqdn', MagicMock(return_value='hostname')), \
                patch('socket.getaddrinfo', MagicMock(return_value=[(2, 3, 0, 'hostname', ('127.0.1.1', 0))])), \
                patch('salt.utils.files.fopen', mock_open()), \
                patch('salt.utils.network.ip_addrs', MagicMock(return_value=['1.2.3.4', '1.2.3.4', '1.2.3.4'])):
            self.assertEqual(network._generate_minion_id(), ['hostname', '1.2.3.4'])

    def test_generate_minion_id_platform_used(self):
        '''
        Test if platform.node is used for the first occurrence.
        The platform.node is most common hostname resolver before anything else.

        :return:
        '''
        with patch('platform.node', MagicMock(return_value='very.long.and.complex.domain.name')), \
                patch('socket.gethostname', MagicMock(return_value='hostname')), \
                patch('socket.getfqdn', MagicMock(return_value='')), \
                patch('socket.getaddrinfo', MagicMock(return_value=[(2, 3, 0, 'hostname', ('127.0.1.1', 0))])), \
                patch('salt.utils.files.fopen', mock_open()), \
                patch('salt.utils.network.ip_addrs', MagicMock(return_value=['1.2.3.4', '1.2.3.4', '1.2.3.4'])):
            self.assertEqual(network.generate_minion_id(), 'very.long.and.complex.domain.name')

    def test_generate_minion_id_platform_localhost_filtered(self):
        '''
        Test if localhost is filtered from the first occurrence.

        :return:
        '''
        with patch('platform.node', MagicMock(return_value='localhost')), \
                patch('socket.gethostname', MagicMock(return_value='pick.me')), \
                patch('socket.getfqdn', MagicMock(return_value='hostname.domainname.blank')), \
                patch('socket.getaddrinfo', MagicMock(return_value=[(2, 3, 0, 'hostname', ('127.0.1.1', 0))])), \
                patch('salt.utils.files.fopen', mock_open()), \
                patch('salt.utils.network.ip_addrs', MagicMock(return_value=['1.2.3.4', '1.2.3.4', '1.2.3.4'])):
            self.assertEqual(network.generate_minion_id(), 'hostname.domainname.blank')

    def test_generate_minion_id_platform_localhost_filtered_all(self):
        '''
        Test if any of the localhost is filtered from everywhere.

        :return:
        '''
        with patch('platform.node', MagicMock(return_value='localhost')), \
                patch('socket.gethostname', MagicMock(return_value='ip6-loopback')), \
                patch('socket.getfqdn', MagicMock(return_value='ip6-localhost')), \
                patch('socket.getaddrinfo', MagicMock(return_value=[(2, 3, 0, 'localhost', ('127.0.1.1', 0))])), \
                patch('salt.utils.files.fopen', mock_open()), \
                patch('salt.utils.network.ip_addrs', MagicMock(return_value=['127.0.0.1', '::1', 'fe00::0', 'fe02::1', '1.2.3.4'])):
            self.assertEqual(network.generate_minion_id(), '1.2.3.4')

    def test_generate_minion_id_platform_localhost_only(self):
        '''
        Test if there is no other choice but localhost.

        :return:
        '''
        with patch('platform.node', MagicMock(return_value='localhost')), \
                patch('socket.gethostname', MagicMock(return_value='ip6-loopback')), \
                patch('socket.getfqdn', MagicMock(return_value='ip6-localhost')), \
                patch('socket.getaddrinfo', MagicMock(return_value=[(2, 3, 0, 'localhost', ('127.0.1.1', 0))])), \
                patch('salt.utils.files.fopen', mock_open()), \
                patch('salt.utils.network.ip_addrs', MagicMock(return_value=['127.0.0.1', '::1', 'fe00::0', 'fe02::1'])):
            self.assertEqual(network.generate_minion_id(), 'localhost')

    def test_generate_minion_id_platform_fqdn(self):
        '''
        Test if fqdn is picked up.

        :return:
        '''
        with patch('platform.node', MagicMock(return_value='localhost')), \
                patch('socket.gethostname', MagicMock(return_value='ip6-loopback')), \
                patch('socket.getfqdn', MagicMock(return_value='pick.me')), \
                patch('socket.getaddrinfo', MagicMock(return_value=[(2, 3, 0, 'localhost', ('127.0.1.1', 0))])), \
                patch('salt.utils.files.fopen', mock_open()), \
                patch('salt.utils.network.ip_addrs', MagicMock(return_value=['127.0.0.1', '::1', 'fe00::0', 'fe02::1'])):
            self.assertEqual(network.generate_minion_id(), 'pick.me')

    def test_generate_minion_id_platform_localhost_addrinfo(self):
        '''
        Test if addinfo is picked up.

        :return:
        '''
        with patch('platform.node', MagicMock(return_value='localhost')), \
                patch('socket.gethostname', MagicMock(return_value='ip6-loopback')), \
                patch('socket.getfqdn', MagicMock(return_value='ip6-localhost')), \
                patch('socket.getaddrinfo', MagicMock(return_value=[(2, 3, 0, 'pick.me', ('127.0.1.1', 0))])), \
                patch('salt.utils.files.fopen', mock_open()), \
                patch('salt.utils.network.ip_addrs', MagicMock(return_value=['127.0.0.1', '::1', 'fe00::0', 'fe02::1'])):
            self.assertEqual(network.generate_minion_id(), 'pick.me')

    def test_generate_minion_id_platform_ip_addr_only(self):
        '''
        Test if IP address is the only what is used as a Minion ID in case no DNS name.

        :return:
        '''
        with patch('platform.node', MagicMock(return_value='localhost')), \
                patch('socket.gethostname', MagicMock(return_value='ip6-loopback')), \
                patch('socket.getfqdn', MagicMock(return_value='ip6-localhost')), \
                patch('socket.getaddrinfo', MagicMock(return_value=[(2, 3, 0, 'localhost', ('127.0.1.1', 0))])), \
                patch('salt.utils.files.fopen', mock_open()), \
                patch('salt.utils.network.ip_addrs', MagicMock(return_value=['127.0.0.1', '::1', 'fe00::0', 'fe02::1', '1.2.3.4'])):
            self.assertEqual(network.generate_minion_id(), '1.2.3.4')

    def test_gen_mac(self):
        with patch('random.randint', return_value=1) as random_mock:
            self.assertEqual(random_mock.return_value, 1)
            ret = network.gen_mac('00:16:3E')
            expected_mac = '00:16:3E:01:01:01'
            self.assertEqual(ret, expected_mac)

    def test_mac_str_to_bytes(self):
        self.assertRaises(ValueError, network.mac_str_to_bytes, '31337')
        self.assertRaises(ValueError, network.mac_str_to_bytes, '0001020304056')
        self.assertRaises(ValueError, network.mac_str_to_bytes, '00:01:02:03:04:056')
        self.assertRaises(ValueError, network.mac_str_to_bytes, 'a0:b0:c0:d0:e0:fg')
        self.assertEqual(b'\x10\x08\x06\x04\x02\x00', network.mac_str_to_bytes('100806040200'))
        self.assertEqual(b'\xf8\xe7\xd6\xc5\xb4\xa3', network.mac_str_to_bytes('f8e7d6c5b4a3'))

    def test_generate_minion_id_with_long_hostname(self):
        '''
        Validate the fix for:

        https://github.com/saltstack/salt/issues/51160
        '''
        long_name = 'localhost-abcdefghijklmnopqrstuvwxyz-abcdefghijklmnopqrstuvwxyz'
        with patch('socket.gethostname', MagicMock(return_value=long_name)):
            # An exception is raised if unicode is passed to socket.getfqdn
            minion_id = network.generate_minion_id()
        assert minion_id != '', minion_id

    def test_netlink_tool_remote_on(self):
        with patch('subprocess.check_output', return_value=NETLINK_SS):
            remotes = network._netlink_tool_remote_on('4505', 'remote')
            self.assertEqual(remotes, set(['127.0.0.1', '::ffff:1.2.3.4']))