def test_multinic_iptables(self, mock_secrule):
mock_secrule.return_value = objects.SecurityGroupRuleList()
ipv4_rules_per_addr = 1
ipv4_addr_per_network = 2
ipv6_rules_per_addr = 1
ipv6_addr_per_network = 1
networks_count = 5
instance_ref = self._create_instance_ref()
instance_ref.security_groups = objects.SecurityGroupList()
network_info = _fake_network_info(self, networks_count,
ipv4_addr_per_network)
network_info[0]['network']['subnets'][0]['meta']['dhcp_server'] = \
'1.1.1.1'
ipv4_len = len(self.fw.iptables.ipv4['filter'].rules)
ipv6_len = len(self.fw.iptables.ipv6['filter'].rules)
inst_ipv4, inst_ipv6 = self.fw.instance_rules(instance_ref,
network_info)
self.fw.prepare_instance_filter(instance_ref, network_info)
ipv4 = self.fw.iptables.ipv4['filter'].rules
ipv6 = self.fw.iptables.ipv6['filter'].rules
ipv4_network_rules = len(ipv4) - len(inst_ipv4) - ipv4_len
ipv6_network_rules = len(ipv6) - len(inst_ipv6) - ipv6_len
# Extra rules are for the DHCP request
rules = (ipv4_rules_per_addr * ipv4_addr_per_network *
networks_count) + 2
self.assertEqual(ipv4_network_rules, rules)
self.assertEqual(
ipv6_network_rules,
ipv6_rules_per_addr * ipv6_addr_per_network * networks_count)
def _fake_secrule(ctxt, id):
if id == secgroup.id:
rules = objects.SecurityGroupRuleList()
rules.objects.extend([r1, r2, r3, r4, r5])
return rules
else:
return []
def test_unfilter_instance_undefines_nwfilter(self, mock_secrule,
mock_instlist, mock_define,
mock_lookup):
fakefilter = NWFilterFakes()
mock_lookup.side_effect = fakefilter.nwfilterLookupByName
mock_define.side_effect = fakefilter.filterDefineXMLMock
instance_ref = self._create_instance_ref()
instance_ref.security_groups = objects.SecurityGroupList()
mock_secrule.return_value = objects.SecurityGroupRuleList()
network_info = _fake_network_info(self, 1)
self.fw.setup_basic_filtering(instance_ref, network_info)
self.fw.prepare_instance_filter(instance_ref, network_info)
self.fw.apply_instance_filter(instance_ref, network_info)
original_filter_count = len(fakefilter.filters)
self.fw.unfilter_instance(instance_ref, network_info)
# should undefine just the instance filter
self.assertEqual(original_filter_count - len(fakefilter.filters), 1)
def test_static_filters(self, mock_secrule, mock_instlist):
UUID = "2674993b-6adb-4733-abd9-a7c10cc1f146"
SRC_UUID = "0e0a76b2-7c52-4bc0-9a60-d83017e42c1a"
instance_ref = self._create_instance_ref(UUID)
src_instance_ref = self._create_instance_ref(SRC_UUID)
secgroup = objects.SecurityGroup(id=1,
user_id='fake',
project_id='fake',
name='testgroup',
description='test group')
src_secgroup = objects.SecurityGroup(id=2,
user_id='fake',
project_id='fake',
name='testsourcegroup',
description='src group')
r1 = objects.SecurityGroupRule(parent_group_id=secgroup.id,
protocol='icmp',
from_port=-1,
to_port=-1,
cidr='192.168.11.0/24',
grantee_group=None)
r2 = objects.SecurityGroupRule(parent_group_id=secgroup.id,
protocol='icmp',
from_port=8,
to_port=-1,
cidr='192.168.11.0/24',
grantee_group=None)
r3 = objects.SecurityGroupRule(parent_group_id=secgroup.id,
protocol='tcp',
from_port=80,
to_port=81,
cidr='192.168.10.0/24',
grantee_group=None)
r4 = objects.SecurityGroupRule(parent_group_id=secgroup.id,
protocol='tcp',
from_port=80,
to_port=81,
cidr=None,
grantee_group=src_secgroup,
group_id=src_secgroup.id)
r5 = objects.SecurityGroupRule(parent_group_id=secgroup.id,
protocol=None,
cidr=None,
grantee_group=src_secgroup,
group_id=src_secgroup.id)
secgroup_list = objects.SecurityGroupList()
secgroup_list.objects.append(secgroup)
src_secgroup_list = objects.SecurityGroupList()
src_secgroup_list.objects.append(src_secgroup)
instance_ref.security_groups = secgroup_list
src_instance_ref.security_groups = src_secgroup_list
mock_secrule.return_value = objects.SecurityGroupRuleList(
objects=[r1, r2, r3, r4, r5])
def _fake_instlist(ctxt, id):
if id == src_secgroup.id:
insts = objects.InstanceList()
insts.objects.append(src_instance_ref)
return insts
else:
insts = objects.InstanceList()
insts.objects.append(instance_ref)
return insts
mock_instlist.side_effect = _fake_instlist
def fake_iptables_execute(*cmd, **kwargs):
process_input = kwargs.get('process_input', None)
if cmd == ('ip6tables-save', '-c'):
return '\n'.join(self.in6_filter_rules), None
if cmd == ('iptables-save', '-c'):
return '\n'.join(self.in_rules), None
if cmd == ('iptables-restore', '-c'):
lines = process_input.split('\n')
if '*filter' in lines:
self.out_rules = lines
return '', ''
if cmd == (
'ip6tables-restore',
'-c',
):
lines = process_input.split('\n')
if '*filter' in lines:
self.out6_rules = lines
return '', ''
network_model = _fake_network_info(self, 1)
linux_net.iptables_manager.execute = fake_iptables_execute
self.stubs.Set(compute_utils, 'get_nw_info_for_instance',
lambda instance: network_model)
self.fw.prepare_instance_filter(instance_ref, network_model)
self.fw.apply_instance_filter(instance_ref, network_model)
in_rules = filter(lambda l: not l.startswith('#'), self.in_rules)
for rule in in_rules:
if 'nova' not in rule:
self.assertIn(rule, self.out_rules,
'Rule went missing: %s' % rule)
instance_chain = None
for rule in self.out_rules:
# This is pretty crude, but it'll do for now
# last two octets change
if re.search('-d 192.168.[0-9]{1,3}.[0-9]{1,3} -j', rule):
instance_chain = rule.split(' ')[-1]
break
self.assertTrue(instance_chain, "The instance chain wasn't added")
security_group_chain = None
for rule in self.out_rules:
# This is pretty crude, but it'll do for now
if '-A %s -j' % instance_chain in rule:
security_group_chain = rule.split(' ')[-1]
break
self.assertTrue(security_group_chain,
"The security group chain wasn't added")
regex = re.compile('\[0\:0\] -A .* -j ACCEPT -p icmp '
'-s 192.168.11.0/24')
self.assertGreater(len(filter(regex.match, self.out_rules)), 0,
"ICMP acceptance rule wasn't added")
regex = re.compile('\[0\:0\] -A .* -j ACCEPT -p icmp -m icmp '
'--icmp-type 8 -s 192.168.11.0/24')
self.assertGreater(len(filter(regex.match, self.out_rules)), 0,
"ICMP Echo Request acceptance rule wasn't added")
for ip in network_model.fixed_ips():
if ip['version'] != 4:
continue
regex = re.compile('\[0\:0\] -A .* -j ACCEPT -p tcp -m multiport '
'--dports 80:81 -s %s' % ip['address'])
self.assertGreater(len(filter(regex.match, self.out_rules)), 0,
"TCP port 80/81 acceptance rule wasn't added")
regex = re.compile('\[0\:0\] -A .* -j ACCEPT -s '
'%s' % ip['address'])
self.assertGreater(
len(filter(regex.match, self.out_rules)), 0,
"Protocol/port-less acceptance rule"
" wasn't added")
regex = re.compile('\[0\:0\] -A .* -j ACCEPT -p tcp '
'-m multiport --dports 80:81 -s 192.168.10.0/24')
self.assertGreater(len(filter(regex.match, self.out_rules)), 0,
"TCP port 80/81 acceptance rule wasn't added")
def test_provider_firewall_rules(self, mock_secrule, mock_fwrules):
mock_secrule.return_value = objects.SecurityGroupRuleList()
# setup basic instance data
instance_ref = self._create_instance_ref()
instance_ref.security_groups = objects.SecurityGroupList()
# FRAGILE: peeks at how the firewall names chains
chain_name = 'inst-%s' % instance_ref['id']
# create a firewall via setup_basic_filtering like libvirt_conn.spawn
# should have a chain with 0 rules
network_info = _fake_network_info(self, 1)
self.fw.setup_basic_filtering(instance_ref, network_info)
self.assertIn('provider', self.fw.iptables.ipv4['filter'].chains)
rules = [
rule for rule in self.fw.iptables.ipv4['filter'].rules
if rule.chain == 'provider'
]
self.assertEqual(0, len(rules))
# add a rule angd send the update message, check for 1 rule
mock_fwrules.return_value = [{
'protocol': 'tcp',
'cidr': '10.99.99.99/32',
'from_port': 1,
'to_port': 65535
}]
self.fw.refresh_provider_fw_rules()
rules = [
rule for rule in self.fw.iptables.ipv4['filter'].rules
if rule.chain == 'provider'
]
self.assertEqual(1, len(rules))
# Add another, refresh, and make sure number of rules goes to two
mock_fwrules.return_value = [{
'protocol': 'tcp',
'cidr': '10.99.99.99/32',
'from_port': 1,
'to_port': 65535
}, {
'protocol': 'udp',
'cidr': '10.99.99.99/32',
'from_port': 1,
'to_port': 65535
}]
self.fw.refresh_provider_fw_rules()
rules = [
rule for rule in self.fw.iptables.ipv4['filter'].rules
if rule.chain == 'provider'
]
self.assertEqual(2, len(rules))
# create the instance filter and make sure it has a jump rule
self.fw.prepare_instance_filter(instance_ref, network_info)
self.fw.apply_instance_filter(instance_ref, network_info)
inst_rules = [
rule for rule in self.fw.iptables.ipv4['filter'].rules
if rule.chain == chain_name
]
jump_rules = [rule for rule in inst_rules if '-j' in rule.rule]
provjump_rules = []
# IptablesTable doesn't make rules unique internally
for rule in jump_rules:
if 'provider' in rule.rule and rule not in provjump_rules:
provjump_rules.append(rule)
self.assertEqual(1, len(provjump_rules))
# remove a rule from the db, cast to compute to refresh rule
mock_fwrules.return_value = [{
'protocol': 'udp',
'cidr': '10.99.99.99/32',
'from_port': 1,
'to_port': 65535
}]
self.fw.refresh_provider_fw_rules()
rules = [
rule for rule in self.fw.iptables.ipv4['filter'].rules
if rule.chain == 'provider'
]
self.assertEqual(1, len(rules))
