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neutron/neutron/tests/unit/agent/linux/test_iptables_firewall.py

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# Copyright 2012, Nachi Ueno, NTT MCL, Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import copy
import mock
from neutron_lib import constants
from neutron_lib import exceptions
from oslo_config import cfg
import testtools
from neutron.agent import firewall
from neutron.agent.linux import ip_conntrack
from neutron.agent.linux import ipset_manager
from neutron.agent.linux import iptables_comments as ic
from neutron.agent.linux import iptables_firewall
from neutron.common import utils
from neutron.conf.agent import common as agent_config
from neutron.conf.agent import securitygroups_rpc as security_config
from neutron.tests import base
from neutron.tests.unit.api.v2 import test_base
_uuid = test_base._uuid
# TODO(mangelajo): replace all 'IPv4', 'IPv6' to constants
FAKE_PREFIX = {'IPv4': '10.0.0.0/24',
'IPv6': 'fe80::/48'}
FAKE_IP = {'IPv4': '10.0.0.1',
'IPv6': 'fe80::1'}
# TODO(mangelajo): replace all '*_sgid' strings for the constants
FAKE_SGID = 'fake_sgid'
OTHER_SGID = 'other_sgid'
_IPv6 = constants.IPv6
_IPv4 = constants.IPv4
RAW_TABLE_OUTPUT = """
# Generated by iptables-save v1.4.21 on Fri Jul 31 16:13:28 2015
*raw
:PREROUTING ACCEPT [11561:3470468]
:OUTPUT ACCEPT [11504:4064044]
:neutron-openvswi-OUTPUT - [0:0]
:neutron-openvswi-PREROUTING - [0:0]
-A PREROUTING -j neutron-openvswi-PREROUTING
-A OUTPUT -j neutron-openvswi-OUTPUT
-A neutron-openvswi-PREROUTING -m physdev --physdev-in qvbe804433b-61 -j CT --zone 4097
-A neutron-openvswi-PREROUTING -m physdev --physdev-in tape804433b-61 -j CT --zone 4097
-A neutron-openvswi-PREROUTING -m physdev --physdev-in qvb95c24827-02 -j CT --zone 4098
-A neutron-openvswi-PREROUTING -m physdev --physdev-in tap95c24827-02 -j CT --zone 4098
-A neutron-openvswi-PREROUTING -m physdev --physdev-in qvb61634509-31 -j CT --zone 4098
-A neutron-openvswi-PREROUTING -m physdev --physdev-in tap61634509-31 -j CT --zone 4098
-A neutron-openvswi-PREROUTING -m physdev --physdev-in qvb8f46cf18-12 -j CT --zone 4105
-A neutron-openvswi-PREROUTING -m physdev --physdev-in tap8f46cf18-12 -j CT --zone 4105
COMMIT
# Completed on Fri Jul 31 16:13:28 2015
""" # noqa
class BaseIptablesFirewallTestCase(base.BaseTestCase):
def setUp(self):
super(BaseIptablesFirewallTestCase, self).setUp()
mock.patch('eventlet.spawn_n').start()
security_config.register_securitygroups_opts()
agent_config.register_root_helper(cfg.CONF)
cfg.CONF.set_override('comment_iptables_rules', False, 'AGENT')
self.utils_exec_p = mock.patch(
'neutron.agent.linux.utils.execute')
self.utils_exec = self.utils_exec_p.start()
self.iptables_cls_p = mock.patch(
'neutron.agent.linux.iptables_manager.IptablesManager')
iptables_cls = self.iptables_cls_p.start()
self.iptables_inst = mock.Mock()
self.v4filter_inst = mock.Mock()
self.v6filter_inst = mock.Mock()
self.iptables_inst.ipv4 = {'filter': self.v4filter_inst,
'raw': self.v4filter_inst
}
self.iptables_inst.ipv6 = {'filter': self.v6filter_inst,
'raw': self.v6filter_inst
}
iptables_cls.return_value = self.iptables_inst
self.iptables_inst.get_rules_for_table.return_value = (
RAW_TABLE_OUTPUT.splitlines())
self.firewall = iptables_firewall.IptablesFirewallDriver()
self.firewall.iptables = self.iptables_inst
# don't mess with sysctl knobs in unit tests
self.firewall._enabled_netfilter_for_bridges = True
# initial data has 1, 2, and 9 in use, see RAW_TABLE_OUTPUT above.
self._dev_zone_map = {'61634509-31': 4098, '8f46cf18-12': 4105,
'95c24827-02': 4098, 'e804433b-61': 4097}
get_rules_for_table_func = lambda x: RAW_TABLE_OUTPUT.split('\n')
filtered_ports = {port_id: self._fake_port()
for port_id in self._dev_zone_map}
self.firewall.ipconntrack = ip_conntrack.IpConntrackManager(
get_rules_for_table_func, filtered_ports=filtered_ports,
unfiltered_ports=dict())
def _fake_port(self):
return {'device': 'tapfake_dev',
'mac_address': 'ff:ff:ff:ff:ff:ff',
'network_id': 'fake_net',
'fixed_ips': [FAKE_IP['IPv4'],
FAKE_IP['IPv6']]}
class IptablesFirewallTestCase(BaseIptablesFirewallTestCase):
def test_prepare_port_filter_with_no_sg(self):
port = self._fake_port()
self.firewall.prepare_port_filter(port)
calls = [mock.call.add_chain('sg-fallback'),
mock.call.add_rule(
'sg-fallback', '-j DROP',
comment=ic.UNMATCH_DROP),
mock.call.add_chain('sg-chain'),
mock.call.add_rule('PREROUTING', mock.ANY, # zone set
comment=None),
mock.call.add_rule('PREROUTING', mock.ANY, # zone set
comment=None),
mock.call.add_rule('PREROUTING', mock.ANY, # zone set
comment=None),
mock.call.add_chain('ifake_dev'),
mock.call.add_rule('FORWARD',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j $sg-chain',
top=True, comment=ic.VM_INT_SG),
mock.call.add_rule('sg-chain',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j $ifake_dev',
top=False, comment=ic.SG_TO_VM_SG),
mock.call.add_rule(
'ifake_dev',
'-m state --state RELATED,ESTABLISHED -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ifake_dev',
'-m state --state INVALID -j DROP',
top=False, comment=None),
mock.call.add_rule('ifake_dev',
'-j $sg-fallback',
top=False, comment=None),
mock.call.add_chain('ofake_dev'),
mock.call.add_rule('FORWARD',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $sg-chain',
top=True, comment=ic.VM_INT_SG),
mock.call.add_rule('sg-chain',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $ofake_dev',
top=False, comment=ic.SG_TO_VM_SG),
mock.call.add_rule('INPUT',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $ofake_dev',
top=False, comment=ic.INPUT_TO_SG),
mock.call.add_chain('sfake_dev'),
mock.call.add_rule(
'sfake_dev',
'-s 10.0.0.1/32 -m mac --mac-source FF:FF:FF:FF:FF:FF '
'-j RETURN',
comment=ic.PAIR_ALLOW),
mock.call.add_rule(
'sfake_dev', '-j DROP',
comment=ic.PAIR_DROP),
mock.call.add_rule(
'ofake_dev',
'-s 0.0.0.0/32 -d 255.255.255.255/32 -p udp -m udp '
'--sport 68 --dport 67 -j RETURN',
top=False, comment=None),
mock.call.add_rule('ofake_dev', '-j $sfake_dev',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 68 --dport 67 -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 67 --dport 68 -j DROP',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-m state --state RELATED,ESTABLISHED -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-m state --state INVALID -j DROP',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-j $sg-fallback',
top=False, comment=None),
mock.call.add_rule('sg-chain', '-j ACCEPT')]
self.v4filter_inst.assert_has_calls(calls)
def test_filter_ipv4_ingress(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress'}
ingress = mock.call.add_rule('ifake_dev', '-j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'source_ip_prefix': prefix}
ingress = mock.call.add_rule(
'ifake_dev', '-s %s -j RETURN' % prefix, top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_tcp(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'tcp'}
ingress = mock.call.add_rule(
'ifake_dev', '-p tcp -j RETURN', top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_tcp_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'tcp',
'source_ip_prefix': prefix}
ingress = mock.call.add_rule('ifake_dev',
'-s %s -p tcp -j RETURN' % prefix,
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_icmp(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'icmp'}
ingress = mock.call.add_rule('ifake_dev', '-p icmp -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_icmp_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'icmp',
'source_ip_prefix': prefix}
ingress = mock.call.add_rule(
'ifake_dev', '-s %s -p icmp -j RETURN' % prefix,
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_tcp_port(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'tcp',
'port_range_min': 10,
'port_range_max': 10}
ingress = mock.call.add_rule('ifake_dev',
'-p tcp -m tcp --dport 10 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_bad_vrrp_with_dport(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'vrrp',
'port_range_min': 10,
'port_range_max': 10}
# Dest port isn't support with VRRP, so don't send it
# down to iptables.
ingress = mock.call.add_rule('ifake_dev',
'-p vrrp -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_tcp_port_by_num(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': '6',
'port_range_min': 10,
'port_range_max': 10}
ingress = mock.call.add_rule('ifake_dev',
'-p tcp -m tcp --dport 10 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_tcp_mport(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'tcp',
'port_range_min': 10,
'port_range_max': 100}
ingress = mock.call.add_rule(
'ifake_dev',
'-p tcp -m tcp -m multiport --dports 10:100 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_tcp_mport_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'tcp',
'port_range_min': 10,
'port_range_max': 100,
'source_ip_prefix': prefix}
ingress = mock.call.add_rule(
'ifake_dev',
'-s %s -p tcp -m tcp -m multiport --dports 10:100 '
'-j RETURN' % prefix, top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_udp(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'udp'}
ingress = mock.call.add_rule(
'ifake_dev', '-p udp -j RETURN', top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_udp_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'udp',
'source_ip_prefix': prefix}
ingress = mock.call.add_rule('ifake_dev',
'-s %s -p udp -j RETURN' % prefix,
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_udp_port(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'udp',
'port_range_min': 10,
'port_range_max': 10}
ingress = mock.call.add_rule('ifake_dev',
'-p udp -m udp --dport 10 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_udp_mport(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'udp',
'port_range_min': 10,
'port_range_max': 100}
ingress = mock.call.add_rule(
'ifake_dev',
'-p udp -m udp -m multiport --dports 10:100 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_udp_mport_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'udp',
'port_range_min': 10,
'port_range_max': 100,
'source_ip_prefix': prefix}
ingress = mock.call.add_rule(
'ifake_dev',
'-s %s -p udp -m udp -m multiport --dports 10:100 '
'-j RETURN' % prefix, top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_dccp_port(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'dccp',
'port_range_min': 10,
'port_range_max': 10}
ingress = mock.call.add_rule('ifake_dev',
'-p dccp -m dccp --dport 10 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_sctp_port(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'sctp',
'port_range_min': 10,
'port_range_max': 10}
ingress = mock.call.add_rule('ifake_dev',
'-p sctp -m sctp --dport 10 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_udplite_port(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'udplite',
'port_range_min': 10,
'port_range_max': 10}
ingress = mock.call.add_rule(
'ifake_dev',
'-p udplite -m multiport --dports 10 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_udplite_mport(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'udplite',
'port_range_min': 10,
'port_range_max': 100}
ingress = mock.call.add_rule(
'ifake_dev',
'-p udplite -m multiport --dports 10:100 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_protocol_blank(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': ''}
ingress = mock.call.add_rule('ifake_dev', '-j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_protocol_zero(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': '0'}
ingress = mock.call.add_rule('ifake_dev', '-j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_protocol_encap(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': 'encap'}
ingress = mock.call.add_rule('ifake_dev',
'-p encap -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_protocol_encap_by_num(self):
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': '98'}
ingress = mock.call.add_rule('ifake_dev',
'-p encap -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_ingress_protocol_999_local(self):
# There is no protocol 999, so let's return a mapping
# that says there is and make sure the rule is created
# using the name and not the number.
rule = {'ethertype': 'IPv4',
'direction': 'ingress',
'protocol': '999'}
ingress = mock.call.add_rule('ifake_dev',
'-p fooproto -j RETURN',
top=False, comment=None)
egress = None
with mock.patch.object(self.firewall,
'_local_protocol_name_map') as lpnm:
lpnm.return_value = {'999': 'fooproto'}
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress(self):
rule = {'ethertype': 'IPv4',
'direction': 'egress'}
egress = mock.call.add_rule('ofake_dev', '-j RETURN',
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_dest_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev', '-d %s -j RETURN' % prefix, top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_source_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'source_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev', '-s %s -j RETURN' % prefix, top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_tcp(self):
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'tcp'}
egress = mock.call.add_rule(
'ofake_dev', '-p tcp -j RETURN', top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_tcp_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'tcp',
'dest_ip_prefix': prefix}
egress = mock.call.add_rule('ofake_dev',
'-d %s -p tcp -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_icmp(self):
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'icmp'}
egress = mock.call.add_rule('ofake_dev', '-p icmp -j RETURN',
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_icmp_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'icmp',
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev', '-d %s -p icmp -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_icmp_type(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'icmp',
'port_range_min': 8,
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p icmp -m icmp --icmp-type 8 -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_icmp_type_name(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'icmp',
'port_range_min': 'echo-request',
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p icmp -m icmp --icmp-type echo-request '
'-j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_icmp_type_code(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'icmp',
'port_range_min': 8,
'port_range_max': 0,
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p icmp -m icmp --icmp-type 8/0 -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_icmp_type_code_protocol_num(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': '1',
'port_range_min': 8,
'port_range_max': 0,
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p icmp -m icmp --icmp-type 8/0 -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_tcp_port(self):
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'tcp',
'port_range_min': 10,
'port_range_max': 10}
egress = mock.call.add_rule('ofake_dev',
'-p tcp -m tcp --dport 10 -j RETURN',
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_tcp_mport(self):
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'tcp',
'port_range_min': 10,
'port_range_max': 100}
egress = mock.call.add_rule(
'ofake_dev',
'-p tcp -m tcp -m multiport --dports 10:100 -j RETURN',
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_tcp_mport_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'tcp',
'port_range_min': 10,
'port_range_max': 100,
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p tcp -m tcp -m multiport --dports 10:100 '
'-j RETURN' % prefix, top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_udp(self):
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'udp'}
egress = mock.call.add_rule(
'ofake_dev', '-p udp -j RETURN', top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_udp_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'udp',
'dest_ip_prefix': prefix}
egress = mock.call.add_rule('ofake_dev',
'-d %s -p udp -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_udp_port(self):
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'udp',
'port_range_min': 10,
'port_range_max': 10}
egress = mock.call.add_rule('ofake_dev',
'-p udp -m udp --dport 10 -j RETURN',
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_udp_mport(self):
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'udp',
'port_range_min': 10,
'port_range_max': 100}
egress = mock.call.add_rule(
'ofake_dev',
'-p udp -m udp -m multiport --dports 10:100 -j RETURN',
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv4_egress_udp_mport_prefix(self):
prefix = FAKE_PREFIX['IPv4']
rule = {'ethertype': 'IPv4',
'direction': 'egress',
'protocol': 'udp',
'port_range_min': 10,
'port_range_max': 100,
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p udp -m udp -m multiport --dports 10:100 '
'-j RETURN' % prefix, top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress(self):
rule = {'ethertype': 'IPv6',
'direction': 'ingress'}
ingress = mock.call.add_rule('ifake_dev', '-j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress_prefix(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'source_ip_prefix': prefix}
ingress = mock.call.add_rule(
'ifake_dev', '-s %s -j RETURN' % prefix, top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress_tcp(self):
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'protocol': 'tcp'}
ingress = mock.call.add_rule(
'ifake_dev', '-p tcp -j RETURN', top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress_tcp_prefix(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'protocol': 'tcp',
'source_ip_prefix': prefix}
ingress = mock.call.add_rule('ifake_dev',
'-s %s -p tcp -j RETURN' % prefix,
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress_tcp_port(self):
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'protocol': 'tcp',
'port_range_min': 10,
'port_range_max': 10}
ingress = mock.call.add_rule('ifake_dev',
'-p tcp -m tcp --dport 10 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress_icmp(self):
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'protocol': 'icmp'}
ingress = mock.call.add_rule(
'ifake_dev', '-p ipv6-icmp -j RETURN', top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress_icmp_prefix(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'protocol': 'icmp',
'source_ip_prefix': prefix}
ingress = mock.call.add_rule(
'ifake_dev', '-s %s -p ipv6-icmp -j RETURN' % prefix,
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress_tcp_mport(self):
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'protocol': 'tcp',
'port_range_min': 10,
'port_range_max': 100}
ingress = mock.call.add_rule(
'ifake_dev',
'-p tcp -m tcp -m multiport --dports 10:100 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def _test_filter_ingress_tcp_min_port_0(self, ethertype):
rule = {'ethertype': ethertype,
'direction': 'ingress',
'protocol': 'tcp',
'port_range_min': 0,
'port_range_max': 100}
ingress = mock.call.add_rule(
'ifake_dev',
'-p tcp -m tcp -m multiport --dports 0:100 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ingress_tcp_min_port_0_for_ipv4(self):
self._test_filter_ingress_tcp_min_port_0('IPv4')
def test_filter_ingress_tcp_min_port_0_for_ipv6(self):
self._test_filter_ingress_tcp_min_port_0('IPv6')
def test_filter_ipv6_ingress_tcp_mport_prefix(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'protocol': 'tcp',
'port_range_min': 10,
'port_range_max': 100,
'source_ip_prefix': prefix}
ingress = mock.call.add_rule(
'ifake_dev',
'-s %s -p tcp -m tcp -m multiport --dports 10:100 '
'-j RETURN' % prefix, top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress_udp(self):
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'protocol': 'udp'}
ingress = mock.call.add_rule(
'ifake_dev', '-p udp -j RETURN', top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress_udp_prefix(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'protocol': 'udp',
'source_ip_prefix': prefix}
ingress = mock.call.add_rule('ifake_dev',
'-s %s -p udp -j RETURN' % prefix,
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress_udp_port(self):
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'protocol': 'udp',
'port_range_min': 10,
'port_range_max': 10}
ingress = mock.call.add_rule('ifake_dev',
'-p udp -m udp --dport 10 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress_udp_mport(self):
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'protocol': 'udp',
'port_range_min': 10,
'port_range_max': 100}
ingress = mock.call.add_rule(
'ifake_dev',
'-p udp -m udp -m multiport --dports 10:100 -j RETURN',
top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_ingress_udp_mport_prefix(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'ingress',
'protocol': 'udp',
'port_range_min': 10,
'port_range_max': 100,
'source_ip_prefix': prefix}
ingress = mock.call.add_rule(
'ifake_dev',
'-s %s -p udp -m udp -m multiport --dports 10:100 '
'-j RETURN' % prefix, top=False, comment=None)
egress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress(self):
rule = {'ethertype': 'IPv6',
'direction': 'egress'}
egress = mock.call.add_rule('ofake_dev', '-j RETURN',
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_prefix(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev', '-d %s -j RETURN' % prefix, top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_tcp(self):
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'tcp'}
egress = mock.call.add_rule(
'ofake_dev', '-p tcp -j RETURN', top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_tcp_prefix(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'tcp',
'dest_ip_prefix': prefix}
egress = mock.call.add_rule('ofake_dev',
'-d %s -p tcp -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_icmp(self):
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'icmp'}
egress = mock.call.add_rule(
'ofake_dev', '-p ipv6-icmp -j RETURN', top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_icmp_prefix(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'icmp',
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev', '-d %s -p ipv6-icmp -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_icmp_type(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'icmp',
'port_range_min': 8,
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p ipv6-icmp -m icmp6 --icmpv6-type 8 -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_icmp_type_name(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'icmp',
'port_range_min': 'echo-request',
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p ipv6-icmp -m icmp6 --icmpv6-type echo-request '
'-j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_icmp_type_code(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'icmp',
'port_range_min': 8,
'port_range_max': 0,
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p ipv6-icmp -m icmp6 --icmpv6-type 8/0 -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_icmp_type_code_protocol_num(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': '58',
'port_range_min': 8,
'port_range_max': 0,
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p ipv6-icmp -m icmp6 --icmpv6-type 8/0 -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_icmp_type_code_protocol_legacy_name(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'icmpv6',
'port_range_min': 8,
'port_range_max': 0,
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p ipv6-icmp -m icmp6 --icmpv6-type 8/0 -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_tcp_port(self):
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'tcp',
'port_range_min': 10,
'port_range_max': 10}
egress = mock.call.add_rule('ofake_dev',
'-p tcp -m tcp --dport 10 -j RETURN',
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_tcp_mport(self):
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'tcp',
'port_range_min': 10,
'port_range_max': 100}
egress = mock.call.add_rule(
'ofake_dev',
'-p tcp -m tcp -m multiport --dports 10:100 -j RETURN',
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_tcp_mport_prefix(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'tcp',
'port_range_min': 10,
'port_range_max': 100,
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p tcp -m tcp -m multiport --dports 10:100 '
'-j RETURN' % prefix, top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_udp(self):
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'udp'}
egress = mock.call.add_rule(
'ofake_dev', '-p udp -j RETURN', top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_udp_prefix(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'udp',
'dest_ip_prefix': prefix}
egress = mock.call.add_rule('ofake_dev',
'-d %s -p udp -j RETURN' % prefix,
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_udp_port(self):
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'udp',
'port_range_min': 10,
'port_range_max': 10}
egress = mock.call.add_rule('ofake_dev',
'-p udp -m udp --dport 10 -j RETURN',
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_udp_mport(self):
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'udp',
'port_range_min': 10,
'port_range_max': 100}
egress = mock.call.add_rule(
'ofake_dev',
'-p udp -m udp -m multiport --dports 10:100 -j RETURN',
top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def test_filter_ipv6_egress_udp_mport_prefix(self):
prefix = FAKE_PREFIX['IPv6']
rule = {'ethertype': 'IPv6',
'direction': 'egress',
'protocol': 'udp',
'port_range_min': 10,
'port_range_max': 100,
'dest_ip_prefix': prefix}
egress = mock.call.add_rule(
'ofake_dev',
'-d %s -p udp -m udp -m multiport --dports 10:100 '
'-j RETURN' % prefix, top=False, comment=None)
ingress = None
self._test_prepare_port_filter(rule, ingress, egress)
def _test_process_trusted_ports(self, configured):
port = self._fake_port()
port['id'] = 'tapfake_dev'
calls = [
mock.call.add_chain('sg-fallback'),
mock.call.add_rule('sg-fallback',
'-j DROP', comment=ic.UNMATCH_DROP)]
if configured:
self.firewall.trusted_ports.append(port['id'])
else:
calls.append(
mock.call.add_rule('FORWARD',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j ACCEPT',
top=False, comment=ic.TRUSTED_ACCEPT))
calls.append(
mock.call.add_rule('FORWARD',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j ACCEPT',
top=False, comment=ic.TRUSTED_ACCEPT))
self.firewall.process_trusted_ports([port['id']])
for filter_inst in [self.v4filter_inst, self.v6filter_inst]:
comb = zip(calls, filter_inst.mock_calls)
for (l, r) in comb:
self.assertEqual(l, r)
filter_inst.assert_has_calls(calls)
self.assertIn(port['id'], self.firewall.trusted_ports)
def test_process_trusted_ports(self):
self._test_process_trusted_ports(False)
def test_process_trusted_ports_already_configured(self):
self._test_process_trusted_ports(True)
def _test_remove_trusted_ports(self, configured):
port = self._fake_port()
port['id'] = 'tapfake_dev'
calls = [
mock.call.add_chain('sg-fallback'),
mock.call.add_rule('sg-fallback',
'-j DROP', comment=ic.UNMATCH_DROP)]
if configured:
self.firewall.trusted_ports.append(port['id'])
calls.append(
mock.call.remove_rule('FORWARD',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j ACCEPT'))
calls.append(
mock.call.remove_rule('FORWARD',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j ACCEPT'))
self.firewall.remove_trusted_ports([port['id']])
for filter_inst in [self.v4filter_inst, self.v6filter_inst]:
comb = zip(calls, filter_inst.mock_calls)
for (l, r) in comb:
self.assertEqual(l, r)
filter_inst.assert_has_calls(calls)
self.assertNotIn(port['id'], self.firewall.trusted_ports)
def test_remove_trusted_ports(self):
self._test_remove_trusted_ports(True)
def test_process_remove_ports_not_configured(self):
self._test_remove_trusted_ports(False)
def _test_prepare_port_filter(self,
rule,
ingress_expected_call=None,
egress_expected_call=None):
port = self._fake_port()
ethertype = rule['ethertype']
prefix = utils.ip_to_cidr(FAKE_IP[ethertype])
filter_inst = self.v4filter_inst
dhcp_rule = [mock.call.add_rule(
'ofake_dev',
'-s 0.0.0.0/32 -d 255.255.255.255/32 -p udp -m udp '
'--sport 68 --dport 67 -j RETURN',
top=False, comment=None)]
if ethertype == 'IPv6':
filter_inst = self.v6filter_inst
dhcp_rule = [mock.call.add_rule('ofake_dev',
'-s ::/128 -d ff02::/16 '
'-p ipv6-icmp -m icmp6 '
'--icmpv6-type %s -j RETURN' %
icmp6_type, top=False,
comment=None) for icmp6_type
in constants.ICMPV6_ALLOWED_UNSPEC_ADDR_TYPES]
sg = [rule]
port['security_group_rules'] = sg
self.firewall.prepare_port_filter(port)
calls = [mock.call.add_chain('sg-fallback'),
mock.call.add_rule(
'sg-fallback',
'-j DROP',
comment=ic.UNMATCH_DROP),
mock.call.add_chain('sg-chain'),
mock.call.add_rule('PREROUTING', mock.ANY, # zone set
comment=None),
mock.call.add_rule('PREROUTING', mock.ANY, # zone set
comment=None),
mock.call.add_rule('PREROUTING', mock.ANY, # zone set
comment=None),
mock.call.add_chain('ifake_dev'),
mock.call.add_rule('FORWARD',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j $sg-chain',
top=True, comment=ic.VM_INT_SG),
mock.call.add_rule('sg-chain',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j $ifake_dev',
top=False, comment=ic.SG_TO_VM_SG)
]
if ethertype == 'IPv6':
for icmp6_type in firewall.ICMPV6_ALLOWED_INGRESS_TYPES:
calls.append(
mock.call.add_rule('ifake_dev',
'-p ipv6-icmp -m icmp6 --icmpv6-type '
'%s -j RETURN' %
icmp6_type, top=False, comment=None))
calls += [
mock.call.add_rule(
'ifake_dev',
'-m state --state RELATED,ESTABLISHED -j RETURN',
top=False, comment=None
)
]
if ingress_expected_call:
calls.append(ingress_expected_call)
calls += [mock.call.add_rule(
'ifake_dev',
'-m state --state INVALID -j DROP',
top=False, comment=None),
mock.call.add_rule('ifake_dev',
'-j $sg-fallback',
top=False, comment=None),
mock.call.add_chain('ofake_dev'),
mock.call.add_rule('FORWARD',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $sg-chain',
top=True, comment=ic.VM_INT_SG),
mock.call.add_rule('sg-chain',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $ofake_dev',
top=False, comment=ic.SG_TO_VM_SG),
mock.call.add_rule('INPUT',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $ofake_dev',
top=False, comment=ic.INPUT_TO_SG),
mock.call.add_chain('sfake_dev'),
mock.call.add_rule(
'sfake_dev',
'-s %s -m mac --mac-source FF:FF:FF:FF:FF:FF -j RETURN'
% prefix,
comment=ic.PAIR_ALLOW)]
if ethertype == 'IPv6':
calls.append(mock.call.add_rule('sfake_dev',
'-s fe80::fdff:ffff:feff:ffff/128 -m mac '
'--mac-source FF:FF:FF:FF:FF:FF -j RETURN',
comment=ic.PAIR_ALLOW))
calls.append(mock.call.add_rule('sfake_dev', '-j DROP',
comment=ic.PAIR_DROP))
calls += dhcp_rule
calls.append(mock.call.add_rule('ofake_dev', '-j $sfake_dev',
top=False, comment=None))
if ethertype == 'IPv4':
calls.append(mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 68 --dport 67 -j RETURN',
top=False, comment=None))
calls.append(mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 67 --dport 68 -j DROP',
top=False, comment=None))
if ethertype == 'IPv6':
calls.append(mock.call.add_rule('ofake_dev',
'-p ipv6-icmp -m icmp6 '
'--icmpv6-type %s -j DROP' %
constants.ICMPV6_TYPE_RA,
top=False, comment=None))
calls.append(mock.call.add_rule('ofake_dev',
'-p ipv6-icmp -j RETURN',
top=False, comment=None))
calls.append(mock.call.add_rule('ofake_dev', '-p udp -m udp '
'--sport 546 --dport 547 '
'-j RETURN',
top=False, comment=None))
calls.append(mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 547 --dport 546 -j DROP',
top=False, comment=None))
calls += [
mock.call.add_rule(
'ofake_dev',
'-m state --state RELATED,ESTABLISHED -j RETURN',
top=False, comment=None),
]
if egress_expected_call:
calls.append(egress_expected_call)
calls += [mock.call.add_rule(
'ofake_dev',
'-m state --state INVALID -j DROP',
top=False, comment=None),
mock.call.add_rule('ofake_dev',
'-j $sg-fallback',
top=False, comment=None),
mock.call.add_rule('sg-chain', '-j ACCEPT')]
comb = zip(calls, filter_inst.mock_calls)
for (l, r) in comb:
self.assertEqual(l, r)
filter_inst.assert_has_calls(calls)
def _test_remove_conntrack_entries(self, ethertype, protocol, direction,
ct_zone):
port = self._fake_port()
port['security_groups'] = 'fake_sg_id'
self.firewall.filtered_ports[port['device']] = port
self.firewall.updated_rule_sg_ids = set(['fake_sg_id'])
self.firewall.sg_rules['fake_sg_id'] = [
{'direction': direction, 'ethertype': ethertype,
'protocol': protocol}]
with mock.patch.dict(self.firewall.ipconntrack._device_zone_map,
{port['network_id']: ct_zone}):
self.firewall.filter_defer_apply_on()
self.firewall.sg_rules['fake_sg_id'] = []
self.firewall.filter_defer_apply_off()
if not ct_zone:
self.assertFalse(self.utils_exec.called)
return
# process conntrack updates in the queue
while not self.firewall.ipconntrack._queue.empty():
self.firewall.ipconntrack._process_queue()
cmd = ['conntrack', '-D']
if protocol:
cmd.extend(['-p', protocol])
if ethertype == 'IPv4':
cmd.extend(['-f', 'ipv4'])
if direction == 'ingress':
cmd.extend(['-d', '10.0.0.1'])
else:
cmd.extend(['-s', '10.0.0.1'])
else:
cmd.extend(['-f', 'ipv6'])
if direction == 'ingress':
cmd.extend(['-d', 'fe80::1'])
else:
cmd.extend(['-s', 'fe80::1'])
cmd.extend(['-w', ct_zone])
calls = [
mock.call(cmd, run_as_root=True, check_exit_code=True,
extra_ok_codes=[1])]
self.utils_exec.assert_has_calls(calls)
def test_remove_conntrack_entries_for_delete_rule_ipv4(self):
for direction in ['ingress', 'egress']:
for pro in [None, 'tcp', 'icmp', 'udp']:
self._test_remove_conntrack_entries(
'IPv4', pro, direction, ct_zone=10)
def test_remove_conntrack_entries_for_delete_rule_ipv4_no_ct_zone(self):
for direction in ['ingress', 'egress']:
for pro in [None, 'tcp', 'icmp', 'udp']:
self._test_remove_conntrack_entries(
'IPv4', pro, direction, ct_zone=None)
def test_remove_conntrack_entries_for_delete_rule_ipv6(self):
for direction in ['ingress', 'egress']:
for pro in [None, 'tcp', 'icmp', 'udp']:
self._test_remove_conntrack_entries(
'IPv6', pro, direction, ct_zone=10)
def test_remove_conntrack_entries_for_delete_rule_ipv6_no_ct_zone(self):
for direction in ['ingress', 'egress']:
for pro in [None, 'tcp', 'icmp', 'udp']:
self._test_remove_conntrack_entries(
'IPv6', pro, direction, ct_zone=None)
def test_remove_conntrack_entries_for_port_sec_group_change(self):
self._test_remove_conntrack_entries_for_port_sec_group_change(
ct_zone=10)
def test_remove_conntrack_entries_for_port_sec_group_change_no_ct_zone(
self):
self._test_remove_conntrack_entries_for_port_sec_group_change(
ct_zone=None)
def _get_expected_conntrack_calls(self, ips, ct_zone):
expected_calls = []
for ip_item in ips:
proto = ip_item[0]
ip = ip_item[1]
for direction in ['-d', '-s']:
cmd = ['conntrack', '-D', '-f', proto, direction, ip]
if ct_zone:
cmd.extend(['-w', ct_zone])
expected_calls.append(
mock.call(cmd, run_as_root=True, check_exit_code=True,
extra_ok_codes=[1]))
return expected_calls
def _test_remove_conntrack_entries_for_port_sec_group_change(self,
ct_zone):
port = self._fake_port()
port['security_groups'] = ['fake_sg_id']
self.firewall.filtered_ports[port['device']] = port
self.firewall.updated_sg_members = set(['tapfake_dev'])
with mock.patch.dict(self.firewall.ipconntrack._device_zone_map,
{port['network_id']: ct_zone}):
self.firewall.filter_defer_apply_on()
new_port = copy.deepcopy(port)
new_port['security_groups'] = ['fake_sg_id2']
self.firewall.filtered_ports[port['device']] = new_port
self.firewall.filter_defer_apply_off()
if not ct_zone:
self.assertFalse(self.utils_exec.called)
return
# process conntrack updates in the queue
while not self.firewall.ipconntrack._queue.empty():
self.firewall.ipconntrack._process_queue()
calls = self._get_expected_conntrack_calls(
[('ipv4', '10.0.0.1'), ('ipv6', 'fe80::1')], ct_zone)
self.utils_exec.assert_has_calls(calls)
def test_remove_conntrack_entries_for_sg_member_changed_ipv4(self):
for direction in ['ingress', 'egress']:
self._test_remove_conntrack_entries_sg_member_changed(
'IPv4', direction, ct_zone=10)
def test_remove_conntrack_entries_for_sg_member_changed_ipv4_no_ct_zone(
self):
for direction in ['ingress', 'egress']:
self._test_remove_conntrack_entries_sg_member_changed(
'IPv4', direction, ct_zone=None)
def test_remove_conntrack_entries_for_sg_member_changed_ipv6(self):
for direction in ['ingress', 'egress']:
self._test_remove_conntrack_entries_sg_member_changed(
'IPv6', direction, ct_zone=10)
def test_remove_conntrack_entries_for_sg_member_changed_ipv6_no_ct_zone(
self):
for direction in ['ingress', 'egress']:
self._test_remove_conntrack_entries_sg_member_changed(
'IPv6', direction, ct_zone=None)
def _test_remove_conntrack_entries_sg_member_changed(self, ethertype,
direction, ct_zone):
port = self._fake_port()
port['security_groups'] = ['fake_sg_id']
port['security_group_source_groups'] = ['fake_sg_id2']
port['security_group_rules'] = [{'security_group_id': 'fake_sg_id',
'direction': direction,
'remote_group_id': 'fake_sg_id2',
'ethertype': ethertype}]
self.firewall.filtered_ports = {port['device']: port}
if ethertype == "IPv4":
ethertype = "ipv4"
members_add = {'IPv4': ['10.0.0.2', '10.0.0.3']}
members_after_delete = {'IPv4': ['10.0.0.3']}
else:
ethertype = "ipv6"
members_add = {'IPv6': ['fe80::2', 'fe80::3']}
members_after_delete = {'IPv6': ['fe80::3']}
with mock.patch.dict(self.firewall.ipconntrack._device_zone_map,
{port['network_id']: ct_zone}):
# add ['10.0.0.2', '10.0.0.3'] or ['fe80::2', 'fe80::3']
self.firewall.security_group_updated('sg_member', ['fake_sg_id2'])
self.firewall.update_security_group_members(
'fake_sg_id2', members_add)
# delete '10.0.0.2' or 'fe80::2'
self.firewall.security_group_updated('sg_member', ['fake_sg_id2'])
self.firewall.update_security_group_members(
'fake_sg_id2', members_after_delete)
# check conntrack deletion from '10.0.0.1' to '10.0.0.2' or
# from 'fe80::1' to 'fe80::2'
ips = {"ipv4": ['10.0.0.1', '10.0.0.2'],
"ipv6": ['fe80::1', 'fe80::2']}
calls = []
# process conntrack updates in the queue
while not self.firewall.ipconntrack._queue.empty():
self.firewall.ipconntrack._process_queue()
for direction in ['ingress', 'egress']:
direction = '-d' if direction == 'ingress' else '-s'
remote_ip_direction = '-s' if direction == '-d' else '-d'
conntrack_cmd = ['conntrack', '-D', '-f', ethertype,
direction, ips[ethertype][0]]
if not ct_zone:
continue
conntrack_cmd.extend(['-w', 10])
conntrack_cmd.extend([remote_ip_direction, ips[ethertype][1]])
calls.append(mock.call(conntrack_cmd,
run_as_root=True, check_exit_code=True,
extra_ok_codes=[1]))
self.utils_exec.assert_has_calls(calls)
def test_user_sg_rules_deduped_before_call_to_iptables_manager(self):
port = self._fake_port()
port['security_group_rules'] = [{'ethertype': 'IPv4',
'direction': 'ingress'}] * 2
self.firewall.prepare_port_filter(port)
rules = [''.join(c[1]) for c in self.v4filter_inst.add_rule.mock_calls]
self.assertEqual(len(set(rules)), len(rules))
def test_update_delete_port_filter(self):
port = self._fake_port()
port['security_group_rules'] = [{'ethertype': 'IPv4',
'direction': 'ingress'}]
self.firewall.prepare_port_filter(port)
port['security_group_rules'] = [{'ethertype': 'IPv4',
'direction': 'egress'}]
self.firewall.update_port_filter(port)
self.firewall.update_port_filter({'device': 'no-exist-device'})
self.firewall.remove_port_filter(port)
self.firewall.remove_port_filter({'device': 'no-exist-device'})
calls = [mock.call.add_chain('sg-fallback'),
mock.call.add_rule(
'sg-fallback',
'-j DROP',
comment=ic.UNMATCH_DROP),
mock.call.add_chain('sg-chain'),
mock.call.add_rule('PREROUTING', mock.ANY,
comment=None), # zone set
mock.call.add_rule('PREROUTING', mock.ANY,
comment=None), # zone set
mock.call.add_rule('PREROUTING', mock.ANY,
comment=None), # zone set
mock.call.add_chain('ifake_dev'),
mock.call.add_rule(
'FORWARD',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j $sg-chain',
top=True, comment=ic.VM_INT_SG),
mock.call.add_rule(
'sg-chain',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j $ifake_dev',
top=False, comment=ic.SG_TO_VM_SG),
mock.call.add_rule(
'ifake_dev',
'-m state --state RELATED,ESTABLISHED -j RETURN',
top=False, comment=None),
mock.call.add_rule('ifake_dev', '-j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ifake_dev',
'-m state --state INVALID -j DROP',
top=False, comment=None),
mock.call.add_rule('ifake_dev',
'-j $sg-fallback',
top=False, comment=None),
mock.call.add_chain('ofake_dev'),
mock.call.add_rule(
'FORWARD',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $sg-chain',
top=True, comment=ic.VM_INT_SG),
mock.call.add_rule(
'sg-chain',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $ofake_dev',
top=False, comment=ic.SG_TO_VM_SG),
mock.call.add_rule(
'INPUT',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $ofake_dev',
top=False, comment=ic.INPUT_TO_SG),
mock.call.add_chain('sfake_dev'),
mock.call.add_rule(
'sfake_dev',
'-s 10.0.0.1/32 -m mac --mac-source FF:FF:FF:FF:FF:FF '
'-j RETURN',
comment=ic.PAIR_ALLOW),
mock.call.add_rule(
'sfake_dev', '-j DROP',
comment=ic.PAIR_DROP),
mock.call.add_rule(
'ofake_dev',
'-s 0.0.0.0/32 -d 255.255.255.255/32 -p udp -m udp '
'--sport 68 --dport 67 -j RETURN',
top=False, comment=None),
mock.call.add_rule('ofake_dev', '-j $sfake_dev',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 68 --dport 67 -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 67 --dport 68 -j DROP',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-m state --state RELATED,ESTABLISHED -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev', '-m state --state INVALID -j DROP',
top=False, comment=None),
mock.call.add_rule('ofake_dev',
'-j $sg-fallback',
top=False, comment=None),
mock.call.add_rule('sg-chain', '-j ACCEPT'),
mock.call.remove_chain('ifake_dev'),
mock.call.remove_chain('ofake_dev'),
mock.call.remove_chain('sfake_dev'),
mock.call.remove_rule('PREROUTING', mock.ANY), # zone set
mock.call.remove_rule('PREROUTING', mock.ANY), # zone set
mock.call.remove_rule('PREROUTING', mock.ANY), # zone set
mock.call.remove_chain('sg-chain'),
mock.call.add_chain('sg-chain'),
mock.call.add_rule('PREROUTING', mock.ANY,
comment=None), # zone set
mock.call.add_rule('PREROUTING', mock.ANY,
comment=None), # zone set
mock.call.add_rule('PREROUTING', mock.ANY,
comment=None), # zone set
mock.call.add_chain('ifake_dev'),
mock.call.add_rule(
'FORWARD',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j $sg-chain',
top=True, comment=ic.VM_INT_SG),
mock.call.add_rule(
'sg-chain',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j $ifake_dev',
top=False, comment=ic.SG_TO_VM_SG),
mock.call.add_rule(
'ifake_dev',
'-m state --state RELATED,ESTABLISHED -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ifake_dev',
'-m state --state INVALID -j DROP',
top=False, comment=None),
mock.call.add_rule('ifake_dev',
'-j $sg-fallback',
top=False, comment=None),
mock.call.add_chain('ofake_dev'),
mock.call.add_rule(
'FORWARD',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $sg-chain',
top=True, comment=ic.VM_INT_SG),
mock.call.add_rule(
'sg-chain',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $ofake_dev',
top=False, comment=ic.SG_TO_VM_SG),
mock.call.add_rule(
'INPUT',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $ofake_dev',
top=False, comment=ic.INPUT_TO_SG),
mock.call.add_chain('sfake_dev'),
mock.call.add_rule(
'sfake_dev',
'-s 10.0.0.1/32 -m mac --mac-source FF:FF:FF:FF:FF:FF '
'-j RETURN',
comment=ic.PAIR_ALLOW),
mock.call.add_rule(
'sfake_dev', '-j DROP',
comment=ic.PAIR_DROP),
mock.call.add_rule(
'ofake_dev',
'-s 0.0.0.0/32 -d 255.255.255.255/32 -p udp -m udp '
'--sport 68 --dport 67 -j RETURN',
top=False, comment=None),
mock.call.add_rule('ofake_dev', '-j $sfake_dev',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 68 --dport 67 -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 67 --dport 68 -j DROP',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-m state --state RELATED,ESTABLISHED -j RETURN',
top=False, comment=None),
mock.call.add_rule('ofake_dev', '-j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-m state --state INVALID -j DROP',
top=False, comment=None),
mock.call.add_rule('ofake_dev',
'-j $sg-fallback',
top=False, comment=None),
mock.call.add_rule('sg-chain', '-j ACCEPT'),
mock.call.remove_chain('ifake_dev'),
mock.call.remove_chain('ofake_dev'),
mock.call.remove_chain('sfake_dev'),
mock.call.remove_rule('PREROUTING', mock.ANY), # zone set
mock.call.remove_rule('PREROUTING', mock.ANY), # zone set
mock.call.remove_rule('PREROUTING', mock.ANY), # zone set
mock.call.remove_chain('sg-chain'),
mock.call.add_chain('sg-chain')]
self.v4filter_inst.assert_has_calls(calls)
def test_delete_conntrack_from_delete_port(self):
self._test_delete_conntrack_from_delete_port(ct_zone=10)
def test_delete_conntrack_from_delete_port_no_ct_zone(self):
self._test_delete_conntrack_from_delete_port(ct_zone=None)
def _test_delete_conntrack_from_delete_port(self, ct_zone):
port = self._fake_port()
port['security_groups'] = ['fake_sg_id']
self.firewall.filtered_ports = {'tapfake_dev': port}
self.firewall.devices_with_updated_sg_members['fake_sg_id2'
] = ['tapfake_dev']
new_port = copy.deepcopy(port)
new_port['security_groups'] = ['fake_sg_id2']
new_port['device'] = ['tapfake_dev2']
new_port['fixed_ips'] = ['10.0.0.2', 'fe80::2']
self.firewall.sg_members['fake_sg_id2'] = {'IPv4': ['10.0.0.2'],
'IPv6': ['fe80::2']}
mock.patch.object(self.firewall.ipconntrack, 'get_device_zone',
return_value=ct_zone).start()
self.firewall.remove_port_filter(port)
if not ct_zone:
self.assertFalse(self.utils_exec.called)
return
# process conntrack updates in the queue
while not self.firewall.ipconntrack._queue.empty():
self.firewall.ipconntrack._process_queue()
calls = self._get_expected_conntrack_calls(
[('ipv4', '10.0.0.1'), ('ipv6', 'fe80::1')], ct_zone)
self.utils_exec.assert_has_calls(calls)
def test_remove_unknown_port(self):
port = self._fake_port()
self.firewall.remove_port_filter(port)
# checking no exception occurs
self.assertFalse(self.v4filter_inst.called)
def test_defer_apply(self):
with self.firewall.defer_apply():
pass
self.iptables_inst.assert_has_calls([mock.call.defer_apply_on(),
mock.call.defer_apply_off()])
def test_filter_defer_with_exception(self):
try:
with self.firewall.defer_apply():
raise Exception("same exception")
except Exception:
pass
self.iptables_inst.assert_has_calls([mock.call.defer_apply_on(),
mock.call.defer_apply_off()])
def _mock_chain_applies(self):
class CopyingMock(mock.MagicMock):
"""Copies arguments so mutable arguments can be asserted on.
Copied verbatim from unittest.mock documentation.
"""
def __call__(self, *args, **kwargs):
args = copy.deepcopy(args)
kwargs = copy.deepcopy(kwargs)
return super(CopyingMock, self).__call__(*args, **kwargs)
# Need to use CopyingMock because _{setup,remove}_chains_apply are
# usually called with that's modified between calls (i.e.,
# self.firewall.filtered_ports).
chain_applies = CopyingMock()
self.firewall._setup_chains_apply = chain_applies.setup
self.firewall._remove_chains_apply = chain_applies.remove
return chain_applies
def test_mock_chain_applies(self):
chain_applies = self._mock_chain_applies()
port_prepare = {'device': 'd1', 'mac_address': 'prepare',
'network_id': 'fake_net'}
port_update = {'device': 'd1', 'mac_address': 'update',
'network_id': 'fake_net'}
self.firewall.prepare_port_filter(port_prepare)
self.firewall.update_port_filter(port_update)
self.firewall.remove_port_filter(port_update)
chain_applies.assert_has_calls([
mock.call.setup({'d1': port_prepare}, {}),
mock.call.remove({'d1': port_prepare}, {}),
mock.call.setup({'d1': port_update}, {}),
mock.call.remove({'d1': port_update}, {}),
mock.call.setup({}, {})])
def test_defer_chain_apply_need_pre_defer_copy(self):
chain_applies = self._mock_chain_applies()
port = self._fake_port()
device2port = {port['device']: port}
self.firewall.prepare_port_filter(port)
with self.firewall.defer_apply():
self.firewall.remove_port_filter(port)
chain_applies.assert_has_calls([mock.call.setup(device2port, {}),
mock.call.remove(device2port, {}),
mock.call.setup({}, {})])
def test_defer_chain_apply_coalesce_simple(self):
chain_applies = self._mock_chain_applies()
port = self._fake_port()
with self.firewall.defer_apply():
self.firewall.prepare_port_filter(port)
self.firewall.update_port_filter(port)
self.firewall.remove_port_filter(port)
chain_applies.assert_has_calls([mock.call.remove({}, {}),
mock.call.setup({}, {})])
def test_defer_chain_apply_coalesce_multiple_ports(self):
chain_applies = self._mock_chain_applies()
port1 = {'device': 'd1', 'mac_address': 'mac1', 'network_id': 'net1'}
port2 = {'device': 'd2', 'mac_address': 'mac2', 'network_id': 'net1'}
device2port = {'d1': port1, 'd2': port2}
with self.firewall.defer_apply():
self.firewall.prepare_port_filter(port1)
self.firewall.prepare_port_filter(port2)
chain_applies.assert_has_calls([mock.call.remove({}, {}),
mock.call.setup(device2port, {})])
def test_ip_spoofing_filter_with_multiple_ips(self):
port = {'device': 'tapfake_dev',
'mac_address': 'ff:ff:ff:ff:ff:ff',
'network_id': 'fake_net',
'fixed_ips': ['10.0.0.1', 'fe80::1', '10.0.0.2']}
self.firewall.prepare_port_filter(port)
calls = [mock.call.add_chain('sg-fallback'),
mock.call.add_rule(
'sg-fallback', '-j DROP',
comment=ic.UNMATCH_DROP),
mock.call.add_chain('sg-chain'),
mock.call.add_rule('PREROUTING', mock.ANY, # zone set
comment=None),
mock.call.add_rule('PREROUTING', mock.ANY, # zone set
comment=None),
mock.call.add_rule('PREROUTING', mock.ANY, # zone set
comment=None),
mock.call.add_chain('ifake_dev'),
mock.call.add_rule('FORWARD',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j $sg-chain',
top=True, comment=ic.VM_INT_SG),
mock.call.add_rule('sg-chain',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j $ifake_dev',
top=False, comment=ic.SG_TO_VM_SG),
mock.call.add_rule(
'ifake_dev',
'-m state --state RELATED,ESTABLISHED -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ifake_dev',
'-m state --state INVALID -j DROP',
top=False, comment=None),
mock.call.add_rule('ifake_dev',
'-j $sg-fallback',
top=False, comment=None),
mock.call.add_chain('ofake_dev'),
mock.call.add_rule('FORWARD',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $sg-chain',
top=True, comment=ic.VM_INT_SG),
mock.call.add_rule('sg-chain',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $ofake_dev',
top=False, comment=ic.SG_TO_VM_SG),
mock.call.add_rule('INPUT',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $ofake_dev',
top=False, comment=ic.INPUT_TO_SG),
mock.call.add_chain('sfake_dev'),
mock.call.add_rule(
'sfake_dev',
'-s 10.0.0.1/32 -m mac --mac-source FF:FF:FF:FF:FF:FF '
'-j RETURN',
comment=ic.PAIR_ALLOW),
mock.call.add_rule(
'sfake_dev',
'-s 10.0.0.2/32 -m mac --mac-source FF:FF:FF:FF:FF:FF '
'-j RETURN',
comment=ic.PAIR_ALLOW),
mock.call.add_rule(
'sfake_dev', '-j DROP',
comment=ic.PAIR_DROP),
mock.call.add_rule(
'ofake_dev',
'-s 0.0.0.0/32 -d 255.255.255.255/32 -p udp -m udp '
'--sport 68 --dport 67 -j RETURN',
top=False, comment=None),
mock.call.add_rule('ofake_dev', '-j $sfake_dev',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 68 --dport 67 -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 67 --dport 68 -j DROP',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-m state --state RELATED,ESTABLISHED -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-m state --state INVALID -j DROP',
top=False, comment=None),
mock.call.add_rule('ofake_dev',
'-j $sg-fallback',
top=False, comment=None),
mock.call.add_rule('sg-chain', '-j ACCEPT')]
self.v4filter_inst.assert_has_calls(calls)
def test_ip_spoofing_no_fixed_ips(self):
port = {'device': 'tapfake_dev',
'mac_address': 'ff:ff:ff:ff:ff:ff',
'network_id': 'fake_net',
'fixed_ips': []}
self.firewall.prepare_port_filter(port)
calls = [mock.call.add_chain('sg-fallback'),
mock.call.add_rule(
'sg-fallback', '-j DROP',
comment=ic.UNMATCH_DROP),
mock.call.add_chain('sg-chain'),
mock.call.add_rule('PREROUTING', mock.ANY, # zone set
comment=None),
mock.call.add_rule('PREROUTING', mock.ANY, # zone set
comment=None),
mock.call.add_rule('PREROUTING', mock.ANY, # zone set
comment=None),
mock.call.add_chain('ifake_dev'),
mock.call.add_rule('FORWARD',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j $sg-chain',
top=True, comment=ic.VM_INT_SG),
mock.call.add_rule('sg-chain',
'-m physdev --physdev-out tapfake_dev '
'--physdev-is-bridged -j $ifake_dev',
top=False, comment=ic.SG_TO_VM_SG),
mock.call.add_rule(
'ifake_dev',
'-m state --state RELATED,ESTABLISHED -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ifake_dev',
'-m state --state INVALID -j DROP',
top=False, comment=None),
mock.call.add_rule('ifake_dev', '-j $sg-fallback',
top=False, comment=None),
mock.call.add_chain('ofake_dev'),
mock.call.add_rule('FORWARD',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $sg-chain',
top=True, comment=ic.VM_INT_SG),
mock.call.add_rule('sg-chain',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $ofake_dev',
top=False, comment=ic.SG_TO_VM_SG),
mock.call.add_rule('INPUT',
'-m physdev --physdev-in tapfake_dev '
'--physdev-is-bridged -j $ofake_dev',
top=False, comment=ic.INPUT_TO_SG),
mock.call.add_chain('sfake_dev'),
mock.call.add_rule(
'sfake_dev',
'-m mac --mac-source FF:FF:FF:FF:FF:FF -j RETURN',
comment=ic.PAIR_ALLOW),
mock.call.add_rule(
'sfake_dev', '-j DROP',
comment=ic.PAIR_DROP),
mock.call.add_rule(
'ofake_dev',
'-s 0.0.0.0/32 -d 255.255.255.255/32 -p udp -m udp '
'--sport 68 --dport 67 -j RETURN',
top=False, comment=None),
mock.call.add_rule('ofake_dev', '-j $sfake_dev',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 68 --dport 67 -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-p udp -m udp --sport 67 --dport 68 -j DROP',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-m state --state RELATED,ESTABLISHED -j RETURN',
top=False, comment=None),
mock.call.add_rule(
'ofake_dev',
'-m state --state INVALID -j DROP',
top=False, comment=None),
mock.call.add_rule('ofake_dev', '-j $sg-fallback',
top=False, comment=None),
mock.call.add_rule('sg-chain', '-j ACCEPT')]
self.v4filter_inst.assert_has_calls(calls)
class IptablesFirewallEnhancedIpsetTestCase(BaseIptablesFirewallTestCase):
def setUp(self):
super(IptablesFirewallEnhancedIpsetTestCase, self).setUp()
self.firewall.ipset = mock.Mock()
self.firewall.ipset.get_name.side_effect = (
ipset_manager.IpsetManager.get_name)
self.firewall.ipset.set_name_exists.return_value = True
self.firewall.ipset.set_members = mock.Mock(return_value=([], []))
def _fake_port(self, sg_id=FAKE_SGID):
return {'device': 'tapfake_dev',
'mac_address': 'ff:ff:ff:ff:ff:ff',
'network_id': 'fake_net',
'fixed_ips': [FAKE_IP['IPv4'],
FAKE_IP['IPv6']],
'security_groups': [sg_id],
'security_group_source_groups': [sg_id]}
def _fake_sg_rule_for_ethertype(self, ethertype, remote_group):
return {'direction': 'ingress', 'remote_group_id': remote_group,
'ethertype': ethertype}
def _fake_sg_rules(self, sg_id=FAKE_SGID, remote_groups=None):
remote_groups = remote_groups or {_IPv4: [FAKE_SGID],
_IPv6: [FAKE_SGID]}
rules = []
for ip_version, remote_group_list in remote_groups.items():
for remote_group in remote_group_list:
rules.append(self._fake_sg_rule_for_ethertype(ip_version,
remote_group))
return {sg_id: rules}
def _fake_sg_members(self, sg_ids=None):
return {sg_id: copy.copy(FAKE_IP) for sg_id in (sg_ids or [FAKE_SGID])}
def test_update_security_group_members(self):
sg_members = {'IPv4': ['10.0.0.1', '10.0.0.2'], 'IPv6': ['fe80::1']}
self.firewall.update_security_group_members('fake_sgid', sg_members)
calls = [
mock.call.set_members('fake_sgid', 'IPv4',
['10.0.0.1', '10.0.0.2']),
mock.call.set_members('fake_sgid', 'IPv6',
['fe80::1'])
]
self.firewall.ipset.assert_has_calls(calls, any_order=True)
def _setup_fake_firewall_members_and_rules(self, firewall):
firewall.sg_rules = self._fake_sg_rules()
firewall.pre_sg_rules = self._fake_sg_rules()
firewall.sg_members = self._fake_sg_members()
firewall.pre_sg_members = firewall.sg_members
def _prepare_rules_and_members_for_removal(self):
self._setup_fake_firewall_members_and_rules(self.firewall)
self.firewall.pre_sg_members[OTHER_SGID] = (
self.firewall.pre_sg_members[FAKE_SGID])
def test_determine_remote_sgs_to_remove(self):
self._prepare_rules_and_members_for_removal()
ports = [self._fake_port()]
self.assertEqual(
{_IPv4: set([OTHER_SGID]), _IPv6: set([OTHER_SGID])},
self.firewall._determine_remote_sgs_to_remove(ports))
def test_determine_remote_sgs_to_remove_ipv6_unreferenced(self):
self._prepare_rules_and_members_for_removal()
ports = [self._fake_port()]
self.firewall.sg_rules = self._fake_sg_rules(
remote_groups={_IPv4: [OTHER_SGID, FAKE_SGID],
_IPv6: [FAKE_SGID]})
self.assertEqual(
{_IPv4: set(), _IPv6: set([OTHER_SGID])},
self.firewall._determine_remote_sgs_to_remove(ports))
def test_get_remote_sg_ids_by_ipversion(self):
self.firewall.sg_rules = self._fake_sg_rules(
remote_groups={_IPv4: [FAKE_SGID], _IPv6: [OTHER_SGID]})
ports = [self._fake_port()]
self.assertEqual(
{_IPv4: set([FAKE_SGID]), _IPv6: set([OTHER_SGID])},
self.firewall._get_remote_sg_ids_sets_by_ipversion(ports))
def test_get_remote_sg_ids(self):
self.firewall.sg_rules = self._fake_sg_rules(
remote_groups={_IPv4: [FAKE_SGID, FAKE_SGID, FAKE_SGID],
_IPv6: [OTHER_SGID, OTHER_SGID, OTHER_SGID]})
port = self._fake_port()
self.assertEqual(
{_IPv4: set([FAKE_SGID]), _IPv6: set([OTHER_SGID])},
self.firewall._get_remote_sg_ids(port))
def test_determine_sg_rules_to_remove(self):
self.firewall.pre_sg_rules = self._fake_sg_rules(sg_id=OTHER_SGID)
ports = [self._fake_port()]
self.assertEqual(set([OTHER_SGID]),
self.firewall._determine_sg_rules_to_remove(ports))
def test_get_sg_ids_set_for_ports(self):
sg_ids = set([FAKE_SGID, OTHER_SGID])
ports = [self._fake_port(sg_id) for sg_id in sg_ids]
self.assertEqual(sg_ids,
self.firewall._get_sg_ids_set_for_ports(ports))
def test_remove_sg_members(self):
self.firewall.sg_members = self._fake_sg_members([FAKE_SGID,
OTHER_SGID])
remote_sgs_to_remove = {_IPv4: set([FAKE_SGID]),
_IPv6: set([FAKE_SGID, OTHER_SGID])}
self.firewall._remove_sg_members(remote_sgs_to_remove)
self.assertIn(OTHER_SGID, self.firewall.sg_members)
self.assertNotIn(FAKE_SGID, self.firewall.sg_members)
def test_remove_unused_security_group_info_clears_unused_rules(self):
self._setup_fake_firewall_members_and_rules(self.firewall)
self.firewall.prepare_port_filter(self._fake_port())
# create another SG which won't be referenced by any filtered port
fake_sg_rules = self.firewall.sg_rules['fake_sgid']
self.firewall.pre_sg_rules[OTHER_SGID] = fake_sg_rules
self.firewall.sg_rules[OTHER_SGID] = fake_sg_rules
# call the cleanup function, and check the unused sg_rules are out
self.firewall._remove_unused_security_group_info()
self.assertNotIn(OTHER_SGID, self.firewall.sg_rules)
def test_remove_unused_security_group_info(self):
self.firewall.sg_members = {OTHER_SGID: {_IPv4: [], _IPv6: []}}
self.firewall.pre_sg_members = self.firewall.sg_members
self.firewall.sg_rules = self._fake_sg_rules(
remote_groups={_IPv4: [FAKE_SGID], _IPv6: [FAKE_SGID]})
self.firewall.pre_sg_rules = self.firewall.sg_rules
port = self._fake_port()
self.firewall.filtered_ports['tapfake_dev'] = port
self.firewall._remove_unused_security_group_info()
self.assertNotIn(OTHER_SGID, self.firewall.sg_members)
def test_not_remove_used_security_group_info(self):
self.firewall.sg_members = {OTHER_SGID: {_IPv4: [], _IPv6: []}}
self.firewall.pre_sg_members = self.firewall.sg_members
self.firewall.sg_rules = self._fake_sg_rules(
remote_groups={_IPv4: [OTHER_SGID], _IPv6: [OTHER_SGID]})
self.firewall.pre_sg_rules = self.firewall.sg_rules
port = self._fake_port()
self.firewall.filtered_ports['tapfake_dev'] = port
self.firewall._remove_unused_security_group_info()
self.assertIn(OTHER_SGID, self.firewall.sg_members)
def test_remove_all_unused_info(self):
self._setup_fake_firewall_members_and_rules(self.firewall)
self.firewall.filtered_ports = {}
self.firewall._remove_unused_security_group_info()
self.assertFalse(self.firewall.sg_members)
self.assertFalse(self.firewall.sg_rules)
def test_single_fallback_accept_rule(self):
p1, p2 = self._fake_port(), self._fake_port()
self.firewall._setup_chains_apply(dict(p1=p1, p2=p2), {})
v4_adds = self.firewall.iptables.ipv4['filter'].add_rule.mock_calls
v6_adds = self.firewall.iptables.ipv6['filter'].add_rule.mock_calls
sg_chain_v4_accept = [call for call in v4_adds
if call == mock.call('sg-chain', '-j ACCEPT')]
sg_chain_v6_accept = [call for call in v6_adds
if call == mock.call('sg-chain', '-j ACCEPT')]
self.assertEqual(1, len(sg_chain_v4_accept))
self.assertEqual(1, len(sg_chain_v6_accept))
def test_remove_port_filter_with_destroy_ipset_chain(self):
self.firewall.sg_rules = self._fake_sg_rules()
port = self._fake_port()
self.firewall.pre_sg_members = {'fake_sgid': {
'IPv4': [],
'IPv6': []}}
sg_members = {'IPv4': ['10.0.0.1'], 'IPv6': ['fe80::1']}
self.firewall.update_security_group_members('fake_sgid', sg_members)
self.firewall.prepare_port_filter(port)
self.firewall.filter_defer_apply_on()
self.firewall.sg_members = {'fake_sgid': {
'IPv4': [],
'IPv6': []}}
self.firewall.pre_sg_members = {'fake_sgid': {
'IPv4': ['10.0.0.1'],
'IPv6': ['fe80::1']}}
self.firewall.remove_port_filter(port)
self.firewall.filter_defer_apply_off()
calls = [
mock.call.set_members('fake_sgid', 'IPv4', ['10.0.0.1']),
mock.call.set_members('fake_sgid', 'IPv6', ['fe80::1']),
mock.call.get_name('fake_sgid', 'IPv4'),
mock.call.set_name_exists('NIPv4fake_sgid'),
mock.call.get_name('fake_sgid', 'IPv6'),
mock.call.set_name_exists('NIPv6fake_sgid'),
mock.call.destroy('fake_sgid', 'IPv4'),
mock.call.destroy('fake_sgid', 'IPv6')]
self.firewall.ipset.assert_has_calls(calls, any_order=True)
def test_filter_defer_apply_off_with_sg_only_ipv6_rule(self):
self.firewall.sg_rules = self._fake_sg_rules()
self.firewall.pre_sg_rules = self._fake_sg_rules()
self.firewall.ipset_chains = {'IPv4fake_sgid': ['10.0.0.2'],
'IPv6fake_sgid': ['fe80::1']}
self.firewall.sg_members = {'fake_sgid': {
'IPv4': ['10.0.0.2'],
'IPv6': ['fe80::1']}}
self.firewall.pre_sg_members = {'fake_sgid': {
'IPv4': ['10.0.0.2'],
'IPv6': ['fe80::1']}}
self.firewall.sg_rules['fake_sgid'].remove(
{'direction': 'ingress', 'remote_group_id': 'fake_sgid',
'ethertype': 'IPv4'})
self.firewall.sg_rules.update()
self.firewall._defer_apply = True
port = self._fake_port()
self.firewall.filtered_ports['tapfake_dev'] = port
self.firewall._pre_defer_filtered_ports = {}
self.firewall._pre_defer_unfiltered_ports = {}
self.firewall.filter_defer_apply_off()
calls = [mock.call.destroy('fake_sgid', 'IPv4')]
self.firewall.ipset.assert_has_calls(calls, True)
def test_sg_rule_expansion_with_remote_ips(self):
other_ips = ['10.0.0.2', '10.0.0.3', '10.0.0.4']
self.firewall.sg_members = {'fake_sgid': {
'IPv4': [FAKE_IP['IPv4']] + other_ips,
'IPv6': [FAKE_IP['IPv6']]}}
port = self._fake_port()
rule = self._fake_sg_rule_for_ethertype(_IPv4, FAKE_SGID)
rules = self.firewall._expand_sg_rule_with_remote_ips(
rule, port, 'ingress')
self.assertEqual(list(rules),
[dict(list(rule.items()) +
[('source_ip_prefix', '%s/32' % ip)])
for ip in other_ips])
def test_build_ipv4v6_mac_ip_list(self):
mac_oth = 'ffff-ff0f-ffff'
mac_unix = 'FF:FF:FF:0F:FF:FF'
ipv4 = FAKE_IP['IPv4']
ipv6 = FAKE_IP['IPv6']
fake_ipv4_pair = []
fake_ipv4_pair.append((mac_unix, ipv4))
fake_ipv6_pair = []
fake_ipv6_pair.append((mac_unix, ipv6))
fake_ipv6_pair.append((mac_unix, 'fe80::fdff:ffff:fe0f:ffff'))
mac_ipv4_pairs = []
mac_ipv6_pairs = []
self.firewall._build_ipv4v6_mac_ip_list(mac_oth, ipv4,
mac_ipv4_pairs, mac_ipv6_pairs)
self.assertEqual(fake_ipv4_pair, mac_ipv4_pairs)
self.firewall._build_ipv4v6_mac_ip_list(mac_oth, ipv6,
mac_ipv4_pairs, mac_ipv6_pairs)
self.assertEqual(fake_ipv6_pair, mac_ipv6_pairs)
# ensure that LLA is not added again for another v6 addr
ipv62 = 'fe81::1'
self.firewall._build_ipv4v6_mac_ip_list(mac_oth, ipv62,
mac_ipv4_pairs, mac_ipv6_pairs)
fake_ipv6_pair.append((mac_unix, ipv62))
self.assertEqual(fake_ipv6_pair, mac_ipv6_pairs)
class OVSHybridIptablesFirewallTestCase(BaseIptablesFirewallTestCase):
def test__populate_initial_zone_map(self):
self.assertEqual(self._dev_zone_map,
self.firewall.ipconntrack._device_zone_map)
def test__generate_device_zone(self):
# initial data has 4097, 4098, and 4105 in use.
# we fill from top up first.
self.assertEqual(4106,
self.firewall.ipconntrack._generate_device_zone('test'))
# once it's maxed out, it scans for gaps
self.firewall.ipconntrack._device_zone_map['someport'] = (
ip_conntrack.MAX_CONNTRACK_ZONES)
for i in range(4099, 4105):
self.assertEqual(i,
self.firewall.ipconntrack._generate_device_zone(i))
# 4105 and 4106 are taken so next should be 4107
self.assertEqual(4107,
self.firewall.ipconntrack._generate_device_zone('p11'))
# take out zone 4097 and make sure it's selected
self.firewall.ipconntrack._device_zone_map.pop('e804433b-61')
self.assertEqual(4097,
self.firewall.ipconntrack._generate_device_zone('p1'))
# fill it up and then make sure an extra throws an error
for i in range(ip_conntrack.ZONE_START,
ip_conntrack.MAX_CONNTRACK_ZONES):
self.firewall.ipconntrack._device_zone_map['dev-%s' % i] = i
with testtools.ExpectedException(exceptions.CTZoneExhaustedError):
self.firewall.ipconntrack._find_open_zone()
# with it full, try again, this should trigger a cleanup
# and return 4097
self.assertEqual(ip_conntrack.ZONE_START,
self.firewall.ipconntrack._generate_device_zone('p12'))
self.assertEqual({'p12': ip_conntrack.ZONE_START},
self.firewall.ipconntrack._device_zone_map)
def test_get_device_zone(self):
dev = {'device': 'tap1234', 'network_id': '12345678901234567'}
# initial data has 4097, 4098, and 4105 in use.
self.assertEqual(4106, self.firewall.ipconntrack.get_device_zone(dev))
# should have been truncated to 11 chars
self._dev_zone_map.update({'12345678901': 4106})
self.assertEqual(self._dev_zone_map,
self.firewall.ipconntrack._device_zone_map)
def test_multiple_firewall_with_common_conntrack(self):
self.firewall1 = iptables_firewall.OVSHybridIptablesFirewallDriver()
self.firewall2 = iptables_firewall.OVSHybridIptablesFirewallDriver()
self.assertEqual(id(self.firewall1.ipconntrack),
id(self.firewall2.ipconntrack))
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