1060 lines
42 KiB
Python
1060 lines
42 KiB
Python
# Copyright 2012 Locaweb.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import sys
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import mock
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from oslo_config import cfg
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import testtools
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from neutron.agent.linux import iptables_comments as ic
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from neutron.agent.linux import iptables_manager
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from neutron.common import constants
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from neutron.common import exceptions as n_exc
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from neutron.tests import base
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from neutron.tests import tools
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IPTABLES_ARG = {'bn': iptables_manager.binary_name,
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'snat_out_comment': ic.SNAT_OUT,
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'filter_rules': '',
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'mark': constants.ROUTER_MARK_MASK}
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NAT_TEMPLATE = ('# Generated by iptables_manager\n'
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'*nat\n'
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':OUTPUT - [0:0]\n'
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':POSTROUTING - [0:0]\n'
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':PREROUTING - [0:0]\n'
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':neutron-postrouting-bottom - [0:0]\n'
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':%(bn)s-OUTPUT - [0:0]\n'
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':%(bn)s-POSTROUTING - [0:0]\n'
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':%(bn)s-PREROUTING - [0:0]\n'
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':%(bn)s-float-snat - [0:0]\n'
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':%(bn)s-snat - [0:0]\n'
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'-I OUTPUT 1 -j %(bn)s-OUTPUT\n'
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'-I POSTROUTING 1 -j %(bn)s-POSTROUTING\n'
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'-I POSTROUTING 2 -j neutron-postrouting-bottom\n'
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'-I PREROUTING 1 -j %(bn)s-PREROUTING\n'
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'-I neutron-postrouting-bottom 1 -j %(bn)s-snat\n'
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'-I %(bn)s-snat 1 -j '
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'%(bn)s-float-snat\n'
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'COMMIT\n'
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'# Completed by iptables_manager\n')
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NAT_DUMP = NAT_TEMPLATE % IPTABLES_ARG
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FILTER_TEMPLATE = ('# Generated by iptables_manager\n'
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'*filter\n'
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':FORWARD - [0:0]\n'
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':INPUT - [0:0]\n'
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':OUTPUT - [0:0]\n'
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':neutron-filter-top - [0:0]\n'
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':%(bn)s-FORWARD - [0:0]\n'
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':%(bn)s-INPUT - [0:0]\n'
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':%(bn)s-OUTPUT - [0:0]\n'
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':%(bn)s-local - [0:0]\n'
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'-I FORWARD 1 -j neutron-filter-top\n'
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'-I FORWARD 2 -j %(bn)s-FORWARD\n'
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'-I INPUT 1 -j %(bn)s-INPUT\n'
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'-I OUTPUT 1 -j neutron-filter-top\n'
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'-I OUTPUT 2 -j %(bn)s-OUTPUT\n'
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'-I neutron-filter-top 1 -j %(bn)s-local\n'
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'COMMIT\n'
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'# Completed by iptables_manager\n')
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FILTER_DUMP = FILTER_TEMPLATE % IPTABLES_ARG
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FILTER_WITH_RULES_TEMPLATE = (
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'# Generated by iptables_manager\n'
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'*filter\n'
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':FORWARD - [0:0]\n'
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':INPUT - [0:0]\n'
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':OUTPUT - [0:0]\n'
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':neutron-filter-top - [0:0]\n'
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':%(bn)s-FORWARD - [0:0]\n'
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':%(bn)s-INPUT - [0:0]\n'
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':%(bn)s-OUTPUT - [0:0]\n'
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':%(bn)s-filter - [0:0]\n'
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':%(bn)s-local - [0:0]\n'
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'-I FORWARD 1 -j neutron-filter-top\n'
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'-I FORWARD 2 -j %(bn)s-FORWARD\n'
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'-I INPUT 1 -j %(bn)s-INPUT\n'
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'-I OUTPUT 1 -j neutron-filter-top\n'
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'-I OUTPUT 2 -j %(bn)s-OUTPUT\n'
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'-I neutron-filter-top 1 -j %(bn)s-local\n'
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'%(filter_rules)s'
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'COMMIT\n'
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'# Completed by iptables_manager\n')
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COMMENTED_NAT_DUMP = (
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'# Generated by iptables_manager\n'
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'*nat\n'
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':OUTPUT - [0:0]\n'
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':POSTROUTING - [0:0]\n'
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':PREROUTING - [0:0]\n'
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':neutron-postrouting-bottom - [0:0]\n'
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':%(bn)s-OUTPUT - [0:0]\n'
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':%(bn)s-POSTROUTING - [0:0]\n'
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':%(bn)s-PREROUTING - [0:0]\n'
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':%(bn)s-float-snat - [0:0]\n'
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':%(bn)s-snat - [0:0]\n'
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'-I OUTPUT 1 -j %(bn)s-OUTPUT\n'
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'-I POSTROUTING 1 -j %(bn)s-POSTROUTING\n'
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'-I POSTROUTING 2 -j neutron-postrouting-bottom\n'
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'-I PREROUTING 1 -j %(bn)s-PREROUTING\n'
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'-I neutron-postrouting-bottom 1 '
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'-m comment --comment "%(snat_out_comment)s" -j %(bn)s-snat\n'
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'-I %(bn)s-snat 1 -j '
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'%(bn)s-float-snat\n'
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'COMMIT\n'
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'# Completed by iptables_manager\n' % IPTABLES_ARG)
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TRAFFIC_COUNTERS_DUMP = (
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'Chain OUTPUT (policy ACCEPT 400 packets, 65901 bytes)\n'
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' pkts bytes target prot opt in out source'
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' destination \n'
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' 400 65901 chain1 all -- * * 0.0.0.0/0'
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' 0.0.0.0/0 \n'
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' 400 65901 chain2 all -- * * 0.0.0.0/0'
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' 0.0.0.0/0 \n')
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class IptablesTestCase(base.BaseTestCase):
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def test_get_binary_name_in_unittest(self):
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# Corresponds to sys.argv content when running python -m unittest class
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with mock.patch('sys.argv', ['python -m unittest', 'class']):
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binary_name = iptables_manager.get_binary_name()
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self.assertEqual('python_-m_unitte', binary_name)
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class IptablesCommentsTestCase(base.BaseTestCase):
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def setUp(self):
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super(IptablesCommentsTestCase, self).setUp()
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cfg.CONF.set_override('comment_iptables_rules', True, 'AGENT')
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self.iptables = iptables_manager.IptablesManager()
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self.execute = mock.patch.object(self.iptables, "execute").start()
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def test_comments_short_enough(self):
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for attr in dir(ic):
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if not attr.startswith('__') and len(getattr(ic, attr)) > 255:
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self.fail("Iptables comment %s is longer than 255 characters."
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% attr)
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def test_reordering_of_jump_rule_comments(self):
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# jump at the start
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self.assertEqual(
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'-m comment --comment "aloha" -j sg-chain',
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iptables_manager.comment_rule('-j sg-chain', 'aloha'))
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# jump in the middle
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self.assertEqual(
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'-s source -m comment --comment "aloha" -j sg-chain',
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iptables_manager.comment_rule('-s source -j sg-chain', 'aloha'))
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# no jump rule
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self.assertEqual(
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'-s source -m comment --comment "aloha"',
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iptables_manager.comment_rule('-s source', 'aloha'))
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def test_add_filter_rule(self):
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iptables_args = {}
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iptables_args.update(IPTABLES_ARG)
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filter_rules = ('-I %(bn)s-INPUT 1 -s 0/0 -d 192.168.0.2 -j '
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'%(bn)s-filter\n-I %(bn)s-filter 1 -j DROP\n'
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% iptables_args)
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iptables_args['filter_rules'] = filter_rules
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filter_dump_mod = FILTER_WITH_RULES_TEMPLATE % iptables_args
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raw_dump = _generate_raw_dump(IPTABLES_ARG)
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mangle_dump = _generate_mangle_dump(IPTABLES_ARG)
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expected_calls_and_values = [
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(mock.call(['iptables-save'],
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run_as_root=True),
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''),
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(mock.call(['iptables-restore', '-n'],
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process_input=(filter_dump_mod + mangle_dump +
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COMMENTED_NAT_DUMP + raw_dump),
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run_as_root=True),
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None),
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(mock.call(['iptables-save'],
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run_as_root=True),
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''),
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(mock.call(['iptables-restore', '-n'],
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process_input=(FILTER_DUMP + mangle_dump +
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COMMENTED_NAT_DUMP + raw_dump),
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run_as_root=True
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),
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None),
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]
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tools.setup_mock_calls(self.execute, expected_calls_and_values)
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self.iptables.ipv4['filter'].add_chain('filter')
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self.iptables.ipv4['filter'].add_rule('filter', '-j DROP')
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self.iptables.ipv4['filter'].add_rule('INPUT',
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'-s 0/0 -d 192.168.0.2 -j'
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' %(bn)s-filter' % IPTABLES_ARG)
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self.iptables.apply()
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self.iptables.ipv4['filter'].remove_rule('filter', '-j DROP')
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self.iptables.ipv4['filter'].remove_rule('INPUT',
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'-s 0/0 -d 192.168.0.2 -j'
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' %(bn)s-filter'
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% IPTABLES_ARG)
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self.iptables.ipv4['filter'].remove_chain('filter')
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self.iptables.apply()
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tools.verify_mock_calls(self.execute, expected_calls_and_values)
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def _generate_mangle_dump(iptables_args):
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return ('# Generated by iptables_manager\n'
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'*mangle\n'
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':FORWARD - [0:0]\n'
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':INPUT - [0:0]\n'
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':OUTPUT - [0:0]\n'
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':POSTROUTING - [0:0]\n'
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':PREROUTING - [0:0]\n'
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':%(bn)s-FORWARD - [0:0]\n'
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':%(bn)s-INPUT - [0:0]\n'
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':%(bn)s-OUTPUT - [0:0]\n'
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':%(bn)s-POSTROUTING - [0:0]\n'
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':%(bn)s-PREROUTING - [0:0]\n'
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':%(bn)s-mark - [0:0]\n'
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'-I FORWARD 1 -j %(bn)s-FORWARD\n'
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'-I INPUT 1 -j %(bn)s-INPUT\n'
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'-I OUTPUT 1 -j %(bn)s-OUTPUT\n'
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'-I POSTROUTING 1 -j %(bn)s-POSTROUTING\n'
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'-I PREROUTING 1 -j %(bn)s-PREROUTING\n'
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'-I %(bn)s-PREROUTING 1 -j %(bn)s-mark\n'
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'COMMIT\n'
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'# Completed by iptables_manager\n' % iptables_args)
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def _generate_raw_dump(iptables_args):
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return ('# Generated by iptables_manager\n'
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'*raw\n'
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':OUTPUT - [0:0]\n'
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':PREROUTING - [0:0]\n'
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':%(bn)s-OUTPUT - [0:0]\n'
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':%(bn)s-PREROUTING - [0:0]\n'
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'-I OUTPUT 1 -j %(bn)s-OUTPUT\n'
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'-I PREROUTING 1 -j %(bn)s-PREROUTING\n'
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'COMMIT\n'
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'# Completed by iptables_manager\n' % iptables_args)
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MANGLE_DUMP = _generate_mangle_dump(IPTABLES_ARG)
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RAW_DUMP = _generate_raw_dump(IPTABLES_ARG)
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class IptablesManagerStateFulTestCase(base.BaseTestCase):
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def setUp(self):
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super(IptablesManagerStateFulTestCase, self).setUp()
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cfg.CONF.set_override('comment_iptables_rules', False, 'AGENT')
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self.iptables = iptables_manager.IptablesManager()
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self.execute = mock.patch.object(self.iptables, "execute").start()
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def test_binary_name(self):
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expected = os.path.basename(sys.argv[0])[:16]
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self.assertEqual(expected, iptables_manager.binary_name)
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def test_get_chain_name(self):
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name = '0123456789' * 5
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# 28 chars is the maximum length of iptables chain name.
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self.assertEqual(iptables_manager.get_chain_name(name, wrap=False),
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name[:28])
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# 11 chars is the maximum length of chain name of iptable_manager
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# if binary_name is prepended.
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self.assertEqual(iptables_manager.get_chain_name(name, wrap=True),
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name[:11])
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def test_defer_apply_with_exception(self):
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self.iptables._apply = mock.Mock(side_effect=Exception)
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with testtools.ExpectedException(n_exc.IpTablesApplyException):
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with self.iptables.defer_apply():
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pass
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def _extend_with_ip6tables_filter(self, expected_calls, filter_dump):
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expected_calls.insert(2, (
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mock.call(['ip6tables-save'],
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run_as_root=True),
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''))
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expected_calls.insert(3, (
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mock.call(['ip6tables-restore', '-n'],
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process_input=filter_dump,
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run_as_root=True),
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None))
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expected_calls.extend([
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(mock.call(['ip6tables-save'],
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run_as_root=True),
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''),
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(mock.call(['ip6tables-restore', '-n'],
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process_input=filter_dump,
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run_as_root=True),
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None)])
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def _test_add_and_remove_chain_custom_binary_name_helper(self, use_ipv6):
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bn = ("xbcdef" * 5)
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self.iptables = iptables_manager.IptablesManager(
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binary_name=bn,
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use_ipv6=use_ipv6)
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self.execute = mock.patch.object(self.iptables, "execute").start()
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iptables_args = {'bn': bn[:16], 'filter_rules': ''}
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filter_dump = FILTER_WITH_RULES_TEMPLATE % iptables_args
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filter_dump_ipv6 = FILTER_TEMPLATE % iptables_args
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filter_dump_mod = filter_dump
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nat_dump = NAT_TEMPLATE % iptables_args
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raw_dump = _generate_raw_dump(iptables_args)
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mangle_dump = _generate_mangle_dump(iptables_args)
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expected_calls_and_values = [
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(mock.call(['iptables-save'],
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run_as_root=True),
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''),
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(mock.call(['iptables-restore', '-n'],
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process_input=(filter_dump_mod + mangle_dump +
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nat_dump + raw_dump),
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run_as_root=True),
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None),
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(mock.call(['iptables-save'],
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run_as_root=True),
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''),
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(mock.call(['iptables-restore', '-n'],
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process_input=(filter_dump + mangle_dump +
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nat_dump + raw_dump),
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run_as_root=True),
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None),
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]
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if use_ipv6:
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self._extend_with_ip6tables_filter(expected_calls_and_values,
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filter_dump_ipv6 + raw_dump)
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tools.setup_mock_calls(self.execute, expected_calls_and_values)
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self.iptables.ipv4['filter'].add_chain('filter')
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self.iptables.apply()
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self.iptables.ipv4['filter'].empty_chain('filter')
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self.iptables.apply()
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tools.verify_mock_calls(self.execute, expected_calls_and_values)
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def test_add_and_remove_chain_custom_binary_name(self):
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self._test_add_and_remove_chain_custom_binary_name_helper(False)
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def test_add_and_remove_chain_custom_binary_name_with_ipv6(self):
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self._test_add_and_remove_chain_custom_binary_name_helper(True)
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def _test_empty_chain_custom_binary_name_helper(self, use_ipv6):
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bn = ("xbcdef" * 5)[:16]
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self.iptables = iptables_manager.IptablesManager(
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binary_name=bn,
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use_ipv6=use_ipv6)
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self.execute = mock.patch.object(self.iptables, "execute").start()
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iptables_args = {'bn': bn}
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filter_dump = FILTER_TEMPLATE % iptables_args
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filter_rules = ('-I %(bn)s-filter 1 -s 0/0 -d 192.168.0.2\n'
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% iptables_args)
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iptables_args['filter_rules'] = filter_rules
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filter_dump_mod = FILTER_WITH_RULES_TEMPLATE % iptables_args
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nat_dump = NAT_TEMPLATE % iptables_args
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raw_dump = _generate_raw_dump(iptables_args)
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mangle_dump = _generate_mangle_dump(iptables_args)
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expected_calls_and_values = [
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(mock.call(['iptables-save'],
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run_as_root=True),
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''),
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(mock.call(['iptables-restore', '-n'],
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process_input=(filter_dump_mod + mangle_dump +
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nat_dump + raw_dump),
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run_as_root=True),
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None),
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(mock.call(['iptables-save'],
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run_as_root=True),
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''),
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(mock.call(['iptables-restore', '-n'],
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process_input=(filter_dump + mangle_dump +
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nat_dump + raw_dump),
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run_as_root=True),
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None),
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]
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if use_ipv6:
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self._extend_with_ip6tables_filter(expected_calls_and_values,
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filter_dump + raw_dump)
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tools.setup_mock_calls(self.execute, expected_calls_and_values)
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self.iptables.ipv4['filter'].add_chain('filter')
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self.iptables.ipv4['filter'].add_rule('filter',
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'-s 0/0 -d 192.168.0.2')
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self.iptables.apply()
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self.iptables.ipv4['filter'].remove_chain('filter')
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self.iptables.apply()
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tools.verify_mock_calls(self.execute, expected_calls_and_values)
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def test_empty_chain_custom_binary_name(self):
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self._test_empty_chain_custom_binary_name_helper(False)
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def test_empty_chain_custom_binary_name_with_ipv6(self):
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self._test_empty_chain_custom_binary_name_helper(True)
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def _test_add_and_remove_chain_helper(self, use_ipv6):
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self.iptables = iptables_manager.IptablesManager(
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use_ipv6=use_ipv6)
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self.execute = mock.patch.object(self.iptables, "execute").start()
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filter_dump_mod = FILTER_WITH_RULES_TEMPLATE % IPTABLES_ARG
|
|
|
|
expected_calls_and_values = [
|
|
(mock.call(['iptables-save'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables-restore', '-n'],
|
|
process_input=(filter_dump_mod + MANGLE_DUMP +
|
|
NAT_DUMP + RAW_DUMP),
|
|
run_as_root=True),
|
|
None),
|
|
(mock.call(['iptables-save'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables-restore', '-n'],
|
|
process_input=(FILTER_DUMP + MANGLE_DUMP + NAT_DUMP +
|
|
RAW_DUMP),
|
|
run_as_root=True),
|
|
None),
|
|
]
|
|
if use_ipv6:
|
|
self._extend_with_ip6tables_filter(expected_calls_and_values,
|
|
FILTER_DUMP + RAW_DUMP)
|
|
|
|
tools.setup_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
self.iptables.ipv4['filter'].add_chain('filter')
|
|
self.iptables.apply()
|
|
|
|
self.iptables.ipv4['filter'].remove_chain('filter')
|
|
self.iptables.apply()
|
|
|
|
tools.verify_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
def test_add_and_remove_chain(self):
|
|
self._test_add_and_remove_chain_helper(False)
|
|
|
|
def test_add_and_remove_chain_with_ipv6(self):
|
|
self._test_add_and_remove_chain_helper(True)
|
|
|
|
def _test_add_filter_rule_helper(self, use_ipv6):
|
|
self.iptables = iptables_manager.IptablesManager(
|
|
use_ipv6=use_ipv6)
|
|
self.execute = mock.patch.object(self.iptables, "execute").start()
|
|
|
|
iptables_args = {}
|
|
iptables_args.update(IPTABLES_ARG)
|
|
filter_rules = ('-I %(bn)s-INPUT 1 -s 0/0 -d 192.168.0.2 -j '
|
|
'%(bn)s-filter\n-I %(bn)s-filter 1 -j DROP\n'
|
|
% iptables_args)
|
|
iptables_args['filter_rules'] = filter_rules
|
|
filter_dump_mod = FILTER_WITH_RULES_TEMPLATE % iptables_args
|
|
|
|
raw_dump = RAW_DUMP % IPTABLES_ARG
|
|
|
|
expected_calls_and_values = [
|
|
(mock.call(['iptables-save'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables-restore', '-n'],
|
|
process_input=(filter_dump_mod + MANGLE_DUMP +
|
|
NAT_DUMP + RAW_DUMP),
|
|
run_as_root=True),
|
|
None),
|
|
(mock.call(['iptables-save'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables-restore', '-n'],
|
|
process_input=(FILTER_DUMP + MANGLE_DUMP + NAT_DUMP +
|
|
RAW_DUMP),
|
|
run_as_root=True
|
|
),
|
|
None),
|
|
]
|
|
if use_ipv6:
|
|
self._extend_with_ip6tables_filter(expected_calls_and_values,
|
|
FILTER_DUMP + raw_dump)
|
|
|
|
tools.setup_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
self.iptables.ipv4['filter'].add_chain('filter')
|
|
self.iptables.ipv4['filter'].add_rule('filter', '-j DROP')
|
|
self.iptables.ipv4['filter'].add_rule('INPUT',
|
|
'-s 0/0 -d 192.168.0.2 -j'
|
|
' %(bn)s-filter' % IPTABLES_ARG)
|
|
self.iptables.apply()
|
|
|
|
self.iptables.ipv4['filter'].remove_rule('filter', '-j DROP')
|
|
self.iptables.ipv4['filter'].remove_rule('INPUT',
|
|
'-s 0/0 -d 192.168.0.2 -j'
|
|
' %(bn)s-filter'
|
|
% IPTABLES_ARG)
|
|
self.iptables.ipv4['filter'].remove_chain('filter')
|
|
|
|
self.iptables.apply()
|
|
|
|
tools.verify_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
def test_add_filter_rule(self):
|
|
self._test_add_filter_rule_helper(False)
|
|
|
|
def test_add_filter_rule_with_ipv6(self):
|
|
self._test_add_filter_rule_helper(True)
|
|
|
|
def _test_rule_with_wrap_target_helper(self, use_ipv6):
|
|
self.iptables = iptables_manager.IptablesManager(
|
|
use_ipv6=use_ipv6)
|
|
self.execute = mock.patch.object(self.iptables, "execute").start()
|
|
|
|
name = '0123456789' * 5
|
|
wrap = "%s-%s" % (iptables_manager.binary_name,
|
|
iptables_manager.get_chain_name(name))
|
|
|
|
iptables_args = {'bn': iptables_manager.binary_name,
|
|
'wrap': wrap}
|
|
|
|
filter_dump_mod = ('# Generated by iptables_manager\n'
|
|
'*filter\n'
|
|
':FORWARD - [0:0]\n'
|
|
':INPUT - [0:0]\n'
|
|
':OUTPUT - [0:0]\n'
|
|
':neutron-filter-top - [0:0]\n'
|
|
':%(wrap)s - [0:0]\n'
|
|
':%(bn)s-FORWARD - [0:0]\n'
|
|
':%(bn)s-INPUT - [0:0]\n'
|
|
':%(bn)s-OUTPUT - [0:0]\n'
|
|
':%(bn)s-local - [0:0]\n'
|
|
'-I FORWARD 1 -j neutron-filter-top\n'
|
|
'-I FORWARD 2 -j %(bn)s-FORWARD\n'
|
|
'-I INPUT 1 -j %(bn)s-INPUT\n'
|
|
'-I OUTPUT 1 -j neutron-filter-top\n'
|
|
'-I OUTPUT 2 -j %(bn)s-OUTPUT\n'
|
|
'-I neutron-filter-top 1 -j %(bn)s-local\n'
|
|
'-I %(bn)s-INPUT 1 -s 0/0 -d 192.168.0.2 -j '
|
|
'%(wrap)s\n'
|
|
'COMMIT\n'
|
|
'# Completed by iptables_manager\n'
|
|
% iptables_args)
|
|
|
|
raw_dump = RAW_DUMP % IPTABLES_ARG
|
|
|
|
expected_calls_and_values = [
|
|
(mock.call(['iptables-save'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables-restore', '-n'],
|
|
process_input=(filter_dump_mod + MANGLE_DUMP +
|
|
NAT_DUMP + RAW_DUMP),
|
|
run_as_root=True),
|
|
None),
|
|
(mock.call(['iptables-save'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables-restore', '-n'],
|
|
process_input=(FILTER_DUMP + MANGLE_DUMP +
|
|
NAT_DUMP + RAW_DUMP),
|
|
run_as_root=True),
|
|
None),
|
|
]
|
|
if use_ipv6:
|
|
self._extend_with_ip6tables_filter(expected_calls_and_values,
|
|
FILTER_DUMP + raw_dump)
|
|
|
|
tools.setup_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
self.iptables.ipv4['filter'].add_chain(name)
|
|
self.iptables.ipv4['filter'].add_rule('INPUT',
|
|
'-s 0/0 -d 192.168.0.2 -j'
|
|
' $%s' % name)
|
|
self.iptables.apply()
|
|
|
|
self.iptables.ipv4['filter'].remove_rule('INPUT',
|
|
'-s 0/0 -d 192.168.0.2 -j'
|
|
' $%s' % name)
|
|
self.iptables.ipv4['filter'].remove_chain(name)
|
|
|
|
self.iptables.apply()
|
|
|
|
tools.verify_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
def test_rule_with_wrap_target(self):
|
|
self._test_rule_with_wrap_target_helper(False)
|
|
|
|
def test_rule_with_wrap_target_with_ipv6(self):
|
|
self._test_rule_with_wrap_target_helper(True)
|
|
|
|
def _test_add_mangle_rule_helper(self, use_ipv6):
|
|
self.iptables = iptables_manager.IptablesManager(
|
|
use_ipv6=use_ipv6)
|
|
self.execute = mock.patch.object(self.iptables, "execute").start()
|
|
|
|
mangle_dump_mod = (
|
|
'# Generated by iptables_manager\n'
|
|
'*mangle\n'
|
|
':FORWARD - [0:0]\n'
|
|
':INPUT - [0:0]\n'
|
|
':OUTPUT - [0:0]\n'
|
|
':POSTROUTING - [0:0]\n'
|
|
':PREROUTING - [0:0]\n'
|
|
':%(bn)s-FORWARD - [0:0]\n'
|
|
':%(bn)s-INPUT - [0:0]\n'
|
|
':%(bn)s-OUTPUT - [0:0]\n'
|
|
':%(bn)s-POSTROUTING - [0:0]\n'
|
|
':%(bn)s-PREROUTING - [0:0]\n'
|
|
':%(bn)s-mangle - [0:0]\n'
|
|
':%(bn)s-mark - [0:0]\n'
|
|
'-I FORWARD 1 -j %(bn)s-FORWARD\n'
|
|
'-I INPUT 1 -j %(bn)s-INPUT\n'
|
|
'-I OUTPUT 1 -j %(bn)s-OUTPUT\n'
|
|
'-I POSTROUTING 1 -j %(bn)s-POSTROUTING\n'
|
|
'-I PREROUTING 1 -j %(bn)s-PREROUTING\n'
|
|
'-I %(bn)s-PREROUTING 1 -j %(bn)s-mark\n'
|
|
'-I %(bn)s-PREROUTING 2 -j MARK --set-xmark 0x1/%(mark)s\n'
|
|
'COMMIT\n'
|
|
'# Completed by iptables_manager\n' % IPTABLES_ARG)
|
|
|
|
expected_calls_and_values = [
|
|
(mock.call(['iptables-save'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables-restore', '-n'],
|
|
process_input=(FILTER_DUMP + mangle_dump_mod +
|
|
NAT_DUMP + RAW_DUMP),
|
|
run_as_root=True),
|
|
None),
|
|
(mock.call(['iptables-save'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables-restore', '-n'],
|
|
process_input=(FILTER_DUMP + MANGLE_DUMP +
|
|
NAT_DUMP + RAW_DUMP),
|
|
run_as_root=True),
|
|
None),
|
|
]
|
|
if use_ipv6:
|
|
self._extend_with_ip6tables_filter(expected_calls_and_values,
|
|
FILTER_DUMP + RAW_DUMP)
|
|
|
|
tools.setup_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
self.iptables.ipv4['mangle'].add_chain('mangle')
|
|
self.iptables.ipv4['mangle'].add_rule(
|
|
'PREROUTING',
|
|
'-j MARK --set-xmark 0x1/%s' % constants.ROUTER_MARK_MASK)
|
|
|
|
self.iptables.apply()
|
|
|
|
self.iptables.ipv4['mangle'].remove_rule(
|
|
'PREROUTING',
|
|
'-j MARK --set-xmark 0x1/%s' % constants.ROUTER_MARK_MASK)
|
|
self.iptables.ipv4['mangle'].remove_chain('mangle')
|
|
|
|
self.iptables.apply()
|
|
|
|
tools.verify_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
def test_add_mangle_rule(self):
|
|
self._test_add_mangle_rule_helper(False)
|
|
|
|
def test_add_mangle_rule_with_ipv6(self):
|
|
self._test_add_mangle_rule_helper(True)
|
|
|
|
def _test_add_nat_rule_helper(self, use_ipv6):
|
|
self.iptables = iptables_manager.IptablesManager(
|
|
use_ipv6=use_ipv6)
|
|
self.execute = mock.patch.object(self.iptables, "execute").start()
|
|
|
|
nat_dump = NAT_TEMPLATE % IPTABLES_ARG
|
|
|
|
nat_dump_mod = ('# Generated by iptables_manager\n'
|
|
'*nat\n'
|
|
':OUTPUT - [0:0]\n'
|
|
':POSTROUTING - [0:0]\n'
|
|
':PREROUTING - [0:0]\n'
|
|
':neutron-postrouting-bottom - [0:0]\n'
|
|
':%(bn)s-OUTPUT - [0:0]\n'
|
|
':%(bn)s-POSTROUTING - [0:0]\n'
|
|
':%(bn)s-PREROUTING - [0:0]\n'
|
|
':%(bn)s-float-snat - [0:0]\n'
|
|
':%(bn)s-nat - [0:0]\n'
|
|
':%(bn)s-snat - [0:0]\n'
|
|
'-I OUTPUT 1 -j %(bn)s-OUTPUT\n'
|
|
'-I POSTROUTING 1 -j %(bn)s-POSTROUTING\n'
|
|
'-I POSTROUTING 2 -j neutron-postrouting-bottom\n'
|
|
'-I PREROUTING 1 -j %(bn)s-PREROUTING\n'
|
|
'-I neutron-postrouting-bottom 1 -j %(bn)s-snat\n'
|
|
'-I %(bn)s-PREROUTING 1 -d 192.168.0.3 -j '
|
|
'%(bn)s-nat\n'
|
|
'-I %(bn)s-nat 1 -p tcp --dport 8080 -j '
|
|
'REDIRECT --to-port 80\n'
|
|
'-I %(bn)s-snat 1 -j %(bn)s-float-snat\n'
|
|
'COMMIT\n'
|
|
'# Completed by iptables_manager\n' % IPTABLES_ARG)
|
|
|
|
raw_dump = RAW_DUMP % IPTABLES_ARG
|
|
|
|
expected_calls_and_values = [
|
|
(mock.call(['iptables-save'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables-restore', '-n'],
|
|
process_input=(FILTER_DUMP + MANGLE_DUMP +
|
|
nat_dump_mod + RAW_DUMP),
|
|
run_as_root=True),
|
|
None),
|
|
(mock.call(['iptables-save'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables-restore', '-n'],
|
|
process_input=(FILTER_DUMP + MANGLE_DUMP + nat_dump +
|
|
RAW_DUMP),
|
|
run_as_root=True),
|
|
None),
|
|
]
|
|
if use_ipv6:
|
|
self._extend_with_ip6tables_filter(expected_calls_and_values,
|
|
FILTER_DUMP + raw_dump)
|
|
|
|
tools.setup_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
self.iptables.ipv4['nat'].add_chain('nat')
|
|
self.iptables.ipv4['nat'].add_rule('PREROUTING',
|
|
'-d 192.168.0.3 -j '
|
|
'%(bn)s-nat' % IPTABLES_ARG)
|
|
self.iptables.ipv4['nat'].add_rule('nat',
|
|
'-p tcp --dport 8080' +
|
|
' -j REDIRECT --to-port 80')
|
|
|
|
self.iptables.apply()
|
|
|
|
self.iptables.ipv4['nat'].remove_rule('nat',
|
|
'-p tcp --dport 8080 -j'
|
|
' REDIRECT --to-port 80')
|
|
self.iptables.ipv4['nat'].remove_rule('PREROUTING',
|
|
'-d 192.168.0.3 -j '
|
|
'%(bn)s-nat' % IPTABLES_ARG)
|
|
self.iptables.ipv4['nat'].remove_chain('nat')
|
|
|
|
self.iptables.apply()
|
|
|
|
tools.verify_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
def test_add_nat_rule(self):
|
|
self._test_add_nat_rule_helper(False)
|
|
|
|
def test_add_nat_rule_with_ipv6(self):
|
|
self._test_add_nat_rule_helper(True)
|
|
|
|
def _test_add_raw_rule_helper(self, use_ipv6):
|
|
self.iptables = iptables_manager.IptablesManager(
|
|
use_ipv6=use_ipv6)
|
|
self.execute = mock.patch.object(self.iptables, "execute").start()
|
|
|
|
raw_dump_mod = ('# Generated by iptables_manager\n'
|
|
'*raw\n'
|
|
':OUTPUT - [0:0]\n'
|
|
':PREROUTING - [0:0]\n'
|
|
':%(bn)s-OUTPUT - [0:0]\n'
|
|
':%(bn)s-PREROUTING - [0:0]\n'
|
|
':%(bn)s-raw - [0:0]\n'
|
|
'-I OUTPUT 1 -j %(bn)s-OUTPUT\n'
|
|
'-I PREROUTING 1 -j %(bn)s-PREROUTING\n'
|
|
'-I %(bn)s-PREROUTING 1 -j CT --notrack\n'
|
|
'COMMIT\n'
|
|
'# Completed by iptables_manager\n'
|
|
% IPTABLES_ARG)
|
|
|
|
expected_calls_and_values = [
|
|
(mock.call(['iptables-save'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables-restore', '-n'],
|
|
process_input=(FILTER_DUMP + MANGLE_DUMP + NAT_DUMP +
|
|
raw_dump_mod),
|
|
run_as_root=True),
|
|
None),
|
|
(mock.call(['iptables-save'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables-restore', '-n'],
|
|
process_input=(FILTER_DUMP + MANGLE_DUMP + NAT_DUMP +
|
|
RAW_DUMP),
|
|
run_as_root=True),
|
|
None),
|
|
]
|
|
if use_ipv6:
|
|
self._extend_with_ip6tables_filter(expected_calls_and_values,
|
|
FILTER_DUMP + RAW_DUMP)
|
|
|
|
tools.setup_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
self.iptables.ipv4['raw'].add_chain('raw')
|
|
self.iptables.ipv4['raw'].add_rule('PREROUTING',
|
|
'-j CT --notrack')
|
|
|
|
self.iptables.apply()
|
|
|
|
self.iptables.ipv4['raw'].remove_rule('PREROUTING',
|
|
'-j CT --notrack')
|
|
self.iptables.ipv4['raw'].remove_chain('raw')
|
|
|
|
self.iptables.apply()
|
|
|
|
tools.verify_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
def test_add_raw_rule(self):
|
|
self._test_add_raw_rule_helper(False)
|
|
|
|
def test_add_raw_rule_with_ipv6(self):
|
|
self._test_add_raw_rule_helper(True)
|
|
|
|
def test_add_rule_to_a_nonexistent_chain(self):
|
|
self.assertRaises(LookupError, self.iptables.ipv4['filter'].add_rule,
|
|
'nonexistent', '-j DROP')
|
|
|
|
def test_remove_nonexistent_chain(self):
|
|
with mock.patch.object(iptables_manager, "LOG") as log:
|
|
self.iptables.ipv4['filter'].remove_chain('nonexistent')
|
|
log.debug.assert_called_once_with(
|
|
'Attempted to remove chain %s which does not exist',
|
|
'nonexistent')
|
|
|
|
def test_remove_nonexistent_rule(self):
|
|
with mock.patch.object(iptables_manager, "LOG") as log:
|
|
self.iptables.ipv4['filter'].remove_rule('nonexistent', '-j DROP')
|
|
log.warn.assert_called_once_with(
|
|
'Tried to remove rule that was not there: '
|
|
'%(chain)r %(rule)r %(wrap)r %(top)r',
|
|
{'wrap': True, 'top': False, 'rule': '-j DROP',
|
|
'chain': 'nonexistent'})
|
|
|
|
def test_iptables_failure_with_no_failing_line_number(self):
|
|
with mock.patch.object(iptables_manager, "LOG") as log:
|
|
# generate Runtime errors on iptables-restore calls
|
|
def iptables_restore_failer(*args, **kwargs):
|
|
if 'iptables-restore' in args[0]:
|
|
self.input_lines = kwargs['process_input'].split('\n')
|
|
# don't provide a specific failure message so all lines
|
|
# are logged
|
|
raise RuntimeError()
|
|
return FILTER_DUMP
|
|
self.execute.side_effect = iptables_restore_failer
|
|
# _apply_synchronized calls iptables-restore so it should raise
|
|
# a RuntimeError
|
|
self.assertRaises(RuntimeError,
|
|
self.iptables._apply_synchronized)
|
|
# The RuntimeError should have triggered a log of the input to the
|
|
# process that it failed to execute. Verify by comparing the log
|
|
# call to the 'process_input' arg given to the failed iptables-restore
|
|
# call.
|
|
# Failure without a specific line number in the error should cause
|
|
# all lines to be logged with numbers.
|
|
logged = ['%7d. %s' % (n, l)
|
|
for n, l in enumerate(self.input_lines, 1)]
|
|
log.error.assert_called_once_with(_(
|
|
'IPTablesManager.apply failed to apply the '
|
|
'following set of iptables rules:\n%s'),
|
|
'\n'.join(logged)
|
|
)
|
|
|
|
def test_iptables_failure_on_specific_line(self):
|
|
with mock.patch.object(iptables_manager, "LOG") as log:
|
|
# generate Runtime errors on iptables-restore calls
|
|
def iptables_restore_failer(*args, **kwargs):
|
|
if 'iptables-restore' in args[0]:
|
|
self.input_lines = kwargs['process_input'].split('\n')
|
|
# pretend line 11 failed
|
|
msg = ("Exit code: 1\nStdout: ''\n"
|
|
"Stderr: 'iptables-restore: line 11 failed\n'")
|
|
raise RuntimeError(msg)
|
|
return FILTER_DUMP
|
|
self.execute.side_effect = iptables_restore_failer
|
|
# _apply_synchronized calls iptables-restore so it should raise
|
|
# a RuntimeError
|
|
self.assertRaises(RuntimeError,
|
|
self.iptables._apply_synchronized)
|
|
# The RuntimeError should have triggered a log of the input to the
|
|
# process that it failed to execute. Verify by comparing the log
|
|
# call to the 'process_input' arg given to the failed iptables-restore
|
|
# call.
|
|
# Line 11 of the input was marked as failing so lines (11 - context)
|
|
# to (11 + context) should be logged
|
|
ctx = iptables_manager.IPTABLES_ERROR_LINES_OF_CONTEXT
|
|
log_start = max(0, 11 - ctx)
|
|
log_end = 11 + ctx
|
|
logged = ['%7d. %s' % (n, l)
|
|
for n, l in enumerate(self.input_lines[log_start:log_end],
|
|
log_start + 1)]
|
|
log.error.assert_called_once_with(_(
|
|
'IPTablesManager.apply failed to apply the '
|
|
'following set of iptables rules:\n%s'),
|
|
'\n'.join(logged)
|
|
)
|
|
|
|
def test_get_traffic_counters_chain_notexists(self):
|
|
with mock.patch.object(iptables_manager, "LOG") as log:
|
|
acc = self.iptables.get_traffic_counters('chain1')
|
|
self.assertIsNone(acc)
|
|
self.assertEqual(0, self.execute.call_count)
|
|
log.warn.assert_called_once_with(
|
|
'Attempted to get traffic counters of chain %s which '
|
|
'does not exist', 'chain1')
|
|
|
|
def _test_get_traffic_counters_helper(self, use_ipv6):
|
|
self.iptables = iptables_manager.IptablesManager(
|
|
use_ipv6=use_ipv6)
|
|
self.execute = mock.patch.object(self.iptables, "execute").start()
|
|
exp_packets = 800
|
|
exp_bytes = 131802
|
|
|
|
expected_calls_and_values = [
|
|
(mock.call(['iptables', '-t', 'filter', '-L', 'OUTPUT',
|
|
'-n', '-v', '-x'],
|
|
run_as_root=True),
|
|
TRAFFIC_COUNTERS_DUMP),
|
|
(mock.call(['iptables', '-t', 'raw', '-L', 'OUTPUT', '-n',
|
|
'-v', '-x'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables', '-t', 'mangle', '-L', 'OUTPUT', '-n',
|
|
'-v', '-x'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables', '-t', 'nat', '-L', 'OUTPUT', '-n',
|
|
'-v', '-x'],
|
|
run_as_root=True),
|
|
''),
|
|
]
|
|
if use_ipv6:
|
|
expected_calls_and_values.append(
|
|
(mock.call(['ip6tables', '-t', 'raw', '-L', 'OUTPUT',
|
|
'-n', '-v', '-x'], run_as_root=True),
|
|
''))
|
|
expected_calls_and_values.append(
|
|
(mock.call(['ip6tables', '-t', 'filter', '-L', 'OUTPUT',
|
|
'-n', '-v', '-x'],
|
|
run_as_root=True),
|
|
TRAFFIC_COUNTERS_DUMP))
|
|
exp_packets *= 2
|
|
exp_bytes *= 2
|
|
|
|
tools.setup_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
acc = self.iptables.get_traffic_counters('OUTPUT')
|
|
self.assertEqual(acc['pkts'], exp_packets)
|
|
self.assertEqual(acc['bytes'], exp_bytes)
|
|
|
|
tools.verify_mock_calls(self.execute, expected_calls_and_values,
|
|
any_order=True)
|
|
|
|
def test_get_traffic_counters(self):
|
|
self._test_get_traffic_counters_helper(False)
|
|
|
|
def test_get_traffic_counters_with_ipv6(self):
|
|
self._test_get_traffic_counters_helper(True)
|
|
|
|
def _test_get_traffic_counters_with_zero_helper(self, use_ipv6):
|
|
self.iptables = iptables_manager.IptablesManager(
|
|
use_ipv6=use_ipv6)
|
|
self.execute = mock.patch.object(self.iptables, "execute").start()
|
|
exp_packets = 800
|
|
exp_bytes = 131802
|
|
|
|
expected_calls_and_values = [
|
|
(mock.call(['iptables', '-t', 'filter', '-L', 'OUTPUT',
|
|
'-n', '-v', '-x', '-Z'],
|
|
run_as_root=True),
|
|
TRAFFIC_COUNTERS_DUMP),
|
|
(mock.call(['iptables', '-t', 'raw', '-L', 'OUTPUT', '-n',
|
|
'-v', '-x', '-Z'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables', '-t', 'mangle', '-L', 'OUTPUT', '-n',
|
|
'-v', '-x', '-Z'],
|
|
run_as_root=True),
|
|
''),
|
|
(mock.call(['iptables', '-t', 'nat', '-L', 'OUTPUT', '-n',
|
|
'-v', '-x', '-Z'],
|
|
run_as_root=True),
|
|
'')
|
|
]
|
|
if use_ipv6:
|
|
expected_calls_and_values.append(
|
|
(mock.call(['ip6tables', '-t', 'raw', '-L', 'OUTPUT',
|
|
'-n', '-v', '-x', '-Z'], run_as_root=True),
|
|
''))
|
|
expected_calls_and_values.append(
|
|
(mock.call(['ip6tables', '-t', 'filter', '-L', 'OUTPUT',
|
|
'-n', '-v', '-x', '-Z'],
|
|
run_as_root=True),
|
|
TRAFFIC_COUNTERS_DUMP))
|
|
exp_packets *= 2
|
|
exp_bytes *= 2
|
|
|
|
tools.setup_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
acc = self.iptables.get_traffic_counters('OUTPUT', zero=True)
|
|
self.assertEqual(acc['pkts'], exp_packets)
|
|
self.assertEqual(acc['bytes'], exp_bytes)
|
|
|
|
tools.verify_mock_calls(self.execute, expected_calls_and_values,
|
|
any_order=True)
|
|
|
|
def test_get_traffic_counters_with_zero(self):
|
|
self._test_get_traffic_counters_with_zero_helper(False)
|
|
|
|
def test_get_traffic_counters_with_zero_with_ipv6(self):
|
|
self._test_get_traffic_counters_with_zero_helper(True)
|
|
|
|
|
|
class IptablesManagerStateLessTestCase(base.BaseTestCase):
|
|
|
|
def setUp(self):
|
|
super(IptablesManagerStateLessTestCase, self).setUp()
|
|
cfg.CONF.set_override('comment_iptables_rules', False, 'AGENT')
|
|
self.iptables = (iptables_manager.IptablesManager(state_less=True))
|
|
|
|
def test_nat_not_found(self):
|
|
self.assertNotIn('nat', self.iptables.ipv4)
|
|
|
|
def test_mangle_not_found(self):
|
|
self.assertNotIn('mangle', self.iptables.ipv4)
|