167 lines
7.4 KiB
Python
167 lines
7.4 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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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"); 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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"""
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Unit Tests for network code
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"""
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import IPy
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import os
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from nova import test
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from nova.network import linux_net
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class IptablesManagerTestCase(test.TestCase):
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sample_filter = ['#Generated by iptables-save on Fri Feb 18 15:17:05 2011',
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'*filter',
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':INPUT ACCEPT [2223527:305688874]',
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':FORWARD ACCEPT [0:0]',
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':OUTPUT ACCEPT [2172501:140856656]',
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':nova-compute-FORWARD - [0:0]',
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':nova-compute-INPUT - [0:0]',
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':nova-compute-local - [0:0]',
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':nova-compute-OUTPUT - [0:0]',
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':nova-filter-top - [0:0]',
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'-A FORWARD -j nova-filter-top ',
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'-A OUTPUT -j nova-filter-top ',
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'-A nova-filter-top -j nova-compute-local ',
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'-A INPUT -j nova-compute-INPUT ',
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'-A OUTPUT -j nova-compute-OUTPUT ',
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'-A FORWARD -j nova-compute-FORWARD ',
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'-A INPUT -i virbr0 -p udp -m udp --dport 53 -j ACCEPT ',
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'-A INPUT -i virbr0 -p tcp -m tcp --dport 53 -j ACCEPT ',
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'-A INPUT -i virbr0 -p udp -m udp --dport 67 -j ACCEPT ',
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'-A INPUT -i virbr0 -p tcp -m tcp --dport 67 -j ACCEPT ',
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'-A FORWARD -s 192.168.122.0/24 -i virbr0 -j ACCEPT ',
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'-A FORWARD -i virbr0 -o virbr0 -j ACCEPT ',
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'-A FORWARD -o virbr0 -j REJECT --reject-with '
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'icmp-port-unreachable ',
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'-A FORWARD -i virbr0 -j REJECT --reject-with '
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'icmp-port-unreachable ',
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'COMMIT',
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'# Completed on Fri Feb 18 15:17:05 2011']
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sample_nat = ['# Generated by iptables-save on Fri Feb 18 15:17:05 2011',
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'*nat',
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':PREROUTING ACCEPT [3936:762355]',
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':INPUT ACCEPT [2447:225266]',
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':OUTPUT ACCEPT [63491:4191863]',
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':POSTROUTING ACCEPT [63112:4108641]',
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':nova-compute-OUTPUT - [0:0]',
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':nova-compute-floating-ip-snat - [0:0]',
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':nova-compute-SNATTING - [0:0]',
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':nova-compute-PREROUTING - [0:0]',
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':nova-compute-POSTROUTING - [0:0]',
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':nova-postrouting-bottom - [0:0]',
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'-A PREROUTING -j nova-compute-PREROUTING ',
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'-A OUTPUT -j nova-compute-OUTPUT ',
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'-A POSTROUTING -j nova-compute-POSTROUTING ',
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'-A POSTROUTING -j nova-postrouting-bottom ',
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'-A nova-postrouting-bottom -j nova-compute-SNATTING ',
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'-A nova-compute-SNATTING -j nova-compute-floating-ip-snat ',
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'COMMIT',
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'# Completed on Fri Feb 18 15:17:05 2011']
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def setUp(self):
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super(IptablesManagerTestCase, self).setUp()
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self.manager = linux_net.IptablesManager()
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def test_filter_rules_are_wrapped(self):
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current_lines = self.sample_filter
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table = self.manager.ipv4['filter']
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table.add_rule('FORWARD', '-s 1.2.3.4/5 -j DROP')
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new_lines = self.manager._modify_rules(current_lines, table)
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self.assertTrue('-A run_tests.py-FORWARD '
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'-s 1.2.3.4/5 -j DROP' in new_lines)
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table.remove_rule('FORWARD', '-s 1.2.3.4/5 -j DROP')
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new_lines = self.manager._modify_rules(current_lines, table)
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self.assertTrue('-A run_tests.py-FORWARD '
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'-s 1.2.3.4/5 -j DROP' not in new_lines)
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def test_nat_rules(self):
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current_lines = self.sample_nat
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new_lines = self.manager._modify_rules(current_lines,
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self.manager.ipv4['nat'])
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for line in [':nova-compute-OUTPUT - [0:0]',
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':nova-compute-floating-ip-snat - [0:0]',
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':nova-compute-SNATTING - [0:0]',
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':nova-compute-PREROUTING - [0:0]',
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':nova-compute-POSTROUTING - [0:0]']:
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self.assertTrue(line in new_lines, "One of nova-compute's chains "
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"went missing.")
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seen_lines = set()
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for line in new_lines:
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line = line.strip()
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self.assertTrue(line not in seen_lines,
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"Duplicate line: %s" % line)
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seen_lines.add(line)
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last_postrouting_line = ''
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for line in new_lines:
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if line.startswith('-A POSTROUTING'):
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last_postrouting_line = line
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self.assertTrue('-j nova-postrouting-bottom' in last_postrouting_line,
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"Last POSTROUTING rule does not jump to "
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"nova-postouting-bottom: %s" % last_postrouting_line)
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for chain in ['POSTROUTING', 'PREROUTING', 'OUTPUT']:
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self.assertTrue('-A %s -j run_tests.py-%s' \
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% (chain, chain) in new_lines,
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"Built-in chain %s not wrapped" % (chain,))
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def test_filter_rules(self):
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current_lines = self.sample_filter
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new_lines = self.manager._modify_rules(current_lines,
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self.manager.ipv4['filter'])
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for line in [':nova-compute-FORWARD - [0:0]',
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':nova-compute-INPUT - [0:0]',
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':nova-compute-local - [0:0]',
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':nova-compute-OUTPUT - [0:0]']:
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self.assertTrue(line in new_lines, "One of nova-compute's chains"
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" went missing.")
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seen_lines = set()
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for line in new_lines:
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line = line.strip()
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self.assertTrue(line not in seen_lines,
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"Duplicate line: %s" % line)
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seen_lines.add(line)
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for chain in ['FORWARD', 'OUTPUT']:
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for line in new_lines:
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if line.startswith('-A %s' % chain):
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self.assertTrue('-j nova-filter-top' in line,
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"First %s rule does not "
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"jump to nova-filter-top" % chain)
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break
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self.assertTrue('-A nova-filter-top '
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'-j run_tests.py-local' in new_lines,
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"nova-filter-top does not jump to wrapped local chain")
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for chain in ['INPUT', 'OUTPUT', 'FORWARD']:
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self.assertTrue('-A %s -j run_tests.py-%s' \
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% (chain, chain) in new_lines,
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"Built-in chain %s not wrapped" % (chain,))
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