370 lines
14 KiB
Python
370 lines
14 KiB
Python
# Copyright 2015 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from neutron_lib import constants
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from oslo_utils import uuidutils
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from neutron.cmd.sanity import checks
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from neutron.common import utils as common_utils
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from neutron.tests.common import net_helpers
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from neutron.tests.fullstack import base
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from neutron.tests.fullstack.resources import environment
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from neutron.tests.fullstack.resources import machine
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from neutron.tests.unit import testlib_api
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load_tests = testlib_api.module_load_tests
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class OVSVersionChecker(object):
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conntrack_supported = None
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@classmethod
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def supports_ovsfirewall(cls):
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if cls.conntrack_supported is None:
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cls.conntrack_supported = checks.ovs_conntrack_supported()
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return cls.conntrack_supported
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class BaseSecurityGroupsSameNetworkTest(base.BaseFullStackTestCase):
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of_interface = None
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def setUp(self):
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host_descriptions = [
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environment.HostDescription(
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of_interface=self.of_interface,
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l2_agent_type=self.l2_agent_type,
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firewall_driver=self.firewall_driver,
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dhcp_agent=True) for _ in range(2)]
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env = environment.Environment(
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environment.EnvironmentDescription(
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network_type=self.network_type),
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host_descriptions)
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super(BaseSecurityGroupsSameNetworkTest, self).setUp(env)
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if (self.firewall_driver == 'openvswitch' and
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not OVSVersionChecker.supports_ovsfirewall()):
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self.skipTest("Open vSwitch firewall_driver doesn't work "
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"with this version of ovs.")
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def assert_connection(self, *args, **kwargs):
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netcat = net_helpers.NetcatTester(*args, **kwargs)
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try:
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self.assertTrue(netcat.test_connectivity())
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finally:
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netcat.stop_processes()
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def assert_no_connection(self, *args, **kwargs):
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netcat = net_helpers.NetcatTester(*args, **kwargs)
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try:
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self.assertRaises(RuntimeError, netcat.test_connectivity)
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finally:
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netcat.stop_processes()
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class TestSecurityGroupsSameNetwork(BaseSecurityGroupsSameNetworkTest):
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network_type = 'vxlan'
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scenarios = [
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('ovs-hybrid', {
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'firewall_driver': 'iptables_hybrid',
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'of_interface': 'native',
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'l2_agent_type': constants.AGENT_TYPE_OVS}),
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('ovs-openflow-cli', {
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'firewall_driver': 'openvswitch',
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'of_interface': 'ovs-ofctl',
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'l2_agent_type': constants.AGENT_TYPE_OVS}),
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('ovs-openflow-native', {
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'firewall_driver': 'openvswitch',
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'of_interface': 'native',
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'l2_agent_type': constants.AGENT_TYPE_OVS}),
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('linuxbridge-iptables', {
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'firewall_driver': 'iptables',
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'l2_agent_type': constants.AGENT_TYPE_LINUXBRIDGE})]
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# NOTE(toshii): As a firewall_driver can interfere with others,
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# the recommended way to add test is to expand this method, not
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# adding another.
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def test_securitygroup(self):
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"""Tests if a security group rules are working, by confirming
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that 0. traffic is allowed when port security is disabled,
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1. connection from outside of allowed security group is blocked
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2. connection from allowed security group is permitted
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3. traffic not explicitly allowed (eg. ICMP) is blocked,
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4. a security group update takes effect,
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5. a remote security group member addition works, and
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6. an established connection stops by deleting a SG rule.
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7. test other protocol functionality by using SCTP protocol
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8. test two vms with same mac on the same host in different
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networks
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"""
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index_to_sg = [0, 0, 1]
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if self.firewall_driver == 'iptables_hybrid':
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# The iptables_hybrid driver lacks isolation between agents
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index_to_host = [0] * 3
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else:
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index_to_host = [0, 1, 1]
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tenant_uuid = uuidutils.generate_uuid()
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network = self.safe_client.create_network(tenant_uuid)
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self.safe_client.create_subnet(
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tenant_uuid, network['id'], '20.0.0.0/24')
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sgs = [self.safe_client.create_security_group(tenant_uuid)
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for i in range(2)]
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ports = [
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self.safe_client.create_port(tenant_uuid, network['id'],
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self.environment.hosts[host].hostname,
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security_groups=[],
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port_security_enabled=False)
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for host in index_to_host]
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self.safe_client.create_security_group_rule(
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tenant_uuid, sgs[0]['id'],
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remote_group_id=sgs[0]['id'], direction='ingress',
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ethertype=constants.IPv4,
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protocol=constants.PROTO_NAME_TCP,
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port_range_min=3333, port_range_max=3333)
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vms = [
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self.useFixture(
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machine.FakeFullstackMachine(
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self.environment.hosts[host],
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network['id'],
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tenant_uuid,
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self.safe_client,
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neutron_port=ports[port],
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use_dhcp=True))
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for port, host in enumerate(index_to_host)]
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for vm in vms:
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vm.block_until_boot()
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# 0. check that traffic is allowed when port security is disabled
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self.assert_connection(
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vms[1].namespace, vms[0].namespace, vms[0].ip, 3333,
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net_helpers.NetcatTester.TCP)
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self.assert_connection(
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vms[2].namespace, vms[0].namespace, vms[0].ip, 3333,
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net_helpers.NetcatTester.TCP)
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net_helpers.assert_ping(vms[0].namespace, vms[1].ip)
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net_helpers.assert_ping(vms[0].namespace, vms[2].ip)
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net_helpers.assert_ping(vms[1].namespace, vms[2].ip)
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# Apply security groups to the ports
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for port, sg in zip(ports, index_to_sg):
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self.safe_client.client.update_port(
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port['id'],
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body={'port': {'port_security_enabled': True,
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'security_groups': [sgs[sg]['id']]}})
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# 1. connection from outside of allowed security group is blocked
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netcat = net_helpers.NetcatTester(
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vms[2].namespace, vms[0].namespace, vms[0].ip, 3333,
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net_helpers.NetcatTester.TCP)
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# Wait until port update takes effect on the ports
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common_utils.wait_until_true(
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netcat.test_no_connectivity,
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exception=AssertionError(
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"Still can connect to the VM from different host.")
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)
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netcat.stop_processes()
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# 2. check if connection from allowed security group is permitted
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self.assert_connection(
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vms[1].namespace, vms[0].namespace, vms[0].ip, 3333,
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net_helpers.NetcatTester.TCP)
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# 3. check if traffic not explicitly allowed (eg. ICMP) is blocked
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net_helpers.assert_no_ping(vms[0].namespace, vms[1].ip)
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net_helpers.assert_no_ping(vms[0].namespace, vms[2].ip)
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net_helpers.assert_no_ping(vms[1].namespace, vms[2].ip)
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# 4. check if a security group update takes effect
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self.assert_no_connection(
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vms[1].namespace, vms[0].namespace, vms[0].ip, 3344,
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net_helpers.NetcatTester.TCP)
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self.safe_client.create_security_group_rule(
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tenant_uuid, sgs[0]['id'],
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remote_group_id=sgs[0]['id'], direction='ingress',
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ethertype=constants.IPv4,
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protocol=constants.PROTO_NAME_TCP,
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port_range_min=3344, port_range_max=3344)
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self.assert_connection(
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vms[1].namespace, vms[0].namespace, vms[0].ip, 3344,
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net_helpers.NetcatTester.TCP)
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# 5. check if a remote security group member addition works
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rule2 = self.safe_client.create_security_group_rule(
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tenant_uuid, sgs[0]['id'],
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remote_group_id=sgs[1]['id'], direction='ingress',
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ethertype=constants.IPv4,
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protocol=constants.PROTO_NAME_TCP,
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port_range_min=3355, port_range_max=3355)
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self.assert_connection(
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vms[2].namespace, vms[0].namespace, vms[0].ip, 3355,
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net_helpers.NetcatTester.TCP)
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# 6. check if an established connection stops by deleting
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# the supporting SG rule.
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index_to_host.append(index_to_host[2])
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index_to_sg.append(1)
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ports.append(
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self.safe_client.create_port(tenant_uuid, network['id'],
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self.environment.hosts[
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index_to_host[3]].hostname,
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security_groups=[sgs[1]['id']]))
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vms.append(
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self.useFixture(
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machine.FakeFullstackMachine(
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self.environment.hosts[index_to_host[3]],
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network['id'],
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tenant_uuid,
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self.safe_client,
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neutron_port=ports[3],
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use_dhcp=True)))
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vms[3].block_until_boot()
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netcat = net_helpers.NetcatTester(vms[3].namespace,
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vms[0].namespace, vms[0].ip, 3355,
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net_helpers.NetcatTester.TCP)
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self.addCleanup(netcat.stop_processes)
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self.assertTrue(netcat.test_connectivity())
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self.client.delete_security_group_rule(rule2['id'])
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common_utils.wait_until_true(lambda: netcat.test_no_connectivity(),
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sleep=8)
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netcat.stop_processes()
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# 7. check SCTP is supported by security group
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self.assert_no_connection(
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vms[1].namespace, vms[0].namespace, vms[0].ip, 3366,
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net_helpers.NetcatTester.SCTP)
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self.safe_client.create_security_group_rule(
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tenant_uuid, sgs[0]['id'],
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remote_group_id=sgs[0]['id'], direction='ingress',
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ethertype=constants.IPv4,
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protocol=constants.PROTO_NUM_SCTP,
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port_range_min=3366, port_range_max=3366)
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self.assert_connection(
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vms[1].namespace, vms[0].namespace, vms[0].ip, 3366,
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net_helpers.NetcatTester.SCTP)
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# 8. test two vms with same mac on the same host in different networks
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self._test_overlapping_mac_addresses()
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def _create_vm_on_host(
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self, project_id, network_id, sg_id, host, mac_address=None):
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if mac_address:
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port = self.safe_client.create_port(
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project_id, network_id, host.hostname,
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security_groups=[sg_id], mac_address=mac_address)
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else:
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port = self.safe_client.create_port(
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project_id, network_id, host.hostname,
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security_groups=[sg_id])
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return self.useFixture(
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machine.FakeFullstackMachine(
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host, network_id, project_id, self.safe_client,
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neutron_port=port))
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def _create_three_vms_first_has_static_mac(
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self, project_id, allowed_port, subnet_cidr):
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"""Create three vms.
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First VM has a static mac and is placed on first host. Second VM is
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placed on the first host and third VM is placed on second host.
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"""
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network = self.safe_client.create_network(project_id)
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self.safe_client.create_subnet(
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project_id, network['id'], subnet_cidr)
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sg = self.safe_client.create_security_group(project_id)
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self.safe_client.create_security_group_rule(
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project_id, sg['id'],
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direction='ingress',
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ethertype=constants.IPv4,
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protocol=constants.PROTO_NAME_TCP,
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port_range_min=allowed_port, port_range_max=allowed_port)
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vms = [self._create_vm_on_host(
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project_id, network['id'], sg['id'], self.environment.hosts[0],
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mac_address="fa:16:3e:de:ad:fe")]
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if self.firewall_driver == 'iptables_hybrid':
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# iptables lack isolation between agents, use only a single host
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vms.extend([
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self._create_vm_on_host(
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project_id, network['id'], sg['id'],
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self.environment.hosts[0])
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for _ in range(2)])
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else:
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vms.extend([
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self._create_vm_on_host(
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project_id, network['id'], sg['id'], host)
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for host in self.environment.hosts[:2]])
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map(lambda vm: vm.block_until_boot(), vms)
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return vms
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def verify_connectivity_between_vms(self, src_vm, dst_vm, protocol, port):
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self.assert_connection(
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src_vm.namespace, dst_vm.namespace, dst_vm.ip, port,
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protocol)
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def verify_no_connectivity_between_vms(
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self, src_vm, dst_vm, protocol, port):
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self.assert_no_connection(
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src_vm.namespace, dst_vm.namespace, dst_vm.ip, port, protocol)
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def _test_overlapping_mac_addresses(self):
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project1 = uuidutils.generate_uuid()
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p1_allowed = 4444
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project2 = uuidutils.generate_uuid()
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p2_allowed = 4445
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p1_vms = self._create_three_vms_first_has_static_mac(
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project1, p1_allowed, '20.0.2.0/24')
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p2_vms = self._create_three_vms_first_has_static_mac(
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project2, p2_allowed, '20.0.3.0/24')
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have_connectivity = [
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(p1_vms[0], p1_vms[1], p1_allowed),
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(p1_vms[1], p1_vms[2], p1_allowed),
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(p2_vms[0], p2_vms[1], p2_allowed),
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(p2_vms[1], p2_vms[2], p2_allowed),
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]
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for vm1, vm2, port in have_connectivity:
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self.verify_connectivity_between_vms(
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vm1, vm2, net_helpers.NetcatTester.TCP, port)
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self.verify_connectivity_between_vms(
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vm2, vm1, net_helpers.NetcatTester.TCP, port)
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self.verify_no_connectivity_between_vms(
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vm1, vm2, net_helpers.NetcatTester.TCP, port + 1)
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self.verify_no_connectivity_between_vms(
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vm2, vm1, net_helpers.NetcatTester.TCP, port + 1)
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