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From jburwell <...@git.apache.org>
Subject [GitHub] cloudstack pull request #1663: [LTS/blocker] CLOUDSTACK-6432: Prevent DNS re...
Date Mon, 29 Aug 2016 02:13:54 GMT
Github user jburwell commented on a diff in the pull request:

    https://github.com/apache/cloudstack/pull/1663#discussion_r76546049
  
    --- Diff: test/integration/smoke/test_router_dns.py ---
    @@ -0,0 +1,286 @@
    +# Licensed to the Apache Software Foundation (ASF) under one
    +# or more contributor license agreements.  See the NOTICE file
    +# distributed with this work for additional information
    +# regarding copyright ownership.  The ASF licenses this file
    +# to you under the Apache License, Version 2.0 (the
    +# "License"); you may not use this file except in compliance
    +# with the License.  You may obtain a copy of the License at
    +#
    +#   http://www.apache.org/licenses/LICENSE-2.0
    +#
    +# Unless required by applicable law or agreed to in writing,
    +# software distributed under the License is distributed on an
    +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    +# KIND, either express or implied.  See the License for the
    +# specific language governing permissions and limitations
    +# under the License.
    +
    +import logging
    +import dns.resolver
    +
    +from nose.plugins.attrib import attr
    +from marvin.cloudstackTestCase import cloudstackTestCase
    +from marvin.lib.utils import cleanup_resources
    +from marvin.lib.base import (ServiceOffering,
    +                             VirtualMachine,
    +                             Account,
    +                             NATRule,
    +                             FireWallRule,
    +                             NetworkOffering,
    +                             Network)
    +from marvin.lib.common import (get_zone,
    +                               get_template,
    +                               get_domain,
    +                               list_routers,
    +                               list_nat_rules,
    +                               list_publicIP)
    +
    +
    +class TestRouterDns(cloudstackTestCase):
    +
    +    @classmethod
    +    def setUpClass(cls):
    +        cls.logger = logging.getLogger('TestRouterDns')
    +        cls.stream_handler = logging.StreamHandler()
    +        cls.logger.setLevel(logging.DEBUG)
    +        cls.logger.addHandler(cls.stream_handler)
    +
    +        cls.testClient = super(TestRouterDns, cls).getClsTestClient()
    +        cls.api_client = cls.testClient.getApiClient()
    +        cls.services = cls.testClient.getParsedTestDataConfig()
    +
    +        cls.domain = get_domain(cls.api_client)
    +        cls.zone = get_zone(cls.api_client, cls.testClient.getZoneForTests())
    +        cls.services['mode'] = cls.zone.networktype
    +        cls.template = get_template(
    +            cls.api_client,
    +            cls.zone.id,
    +            cls.services["ostype"]
    +        )
    +        cls.services["virtual_machine"]["zoneid"] = cls.zone.id
    +
    +        cls.logger.debug("Creating Admin Account for domain %s on zone %s" % (cls.domain.id,
cls.zone.id))
    +        cls.account = Account.create(
    +            cls.api_client,
    +            cls.services["account"],
    +            admin=True,
    +            domainid=cls.domain.id
    +        )
    +
    +        cls.logger.debug("Creating Service Offering on zone %s" % (cls.zone.id))
    +        cls.service_offering = ServiceOffering.create(
    +            cls.api_client,
    +            cls.services["service_offering"]
    +        )
    +
    +        cls.logger.debug("Creating Network Offering on zone %s" % (cls.zone.id))
    +        cls.services["isolated_network_offering"]["egress_policy"] = "true"
    +        cls.network_offering = NetworkOffering.create(cls.api_client,
    +                                                       cls.services["isolated_network_offering"],
    +                                                       conservemode=True)
    +        cls.network_offering.update(cls.api_client, state='Enabled')
    +
    +        cls.logger.debug("Creating Network for Account %s using offering %s" % (cls.account.name,
cls.network_offering.id))
    +        cls.network = Network.create(cls.api_client,
    +                                      cls.services["network"],
    +                                      accountid=cls.account.name,
    +                                      domainid=cls.account.domainid,
    +                                      networkofferingid=cls.network_offering.id,
    +                                      zoneid=cls.zone.id)
    +
    +        cls.logger.debug("Creating guest VM for Account %s using offering %s" % (cls.account.name,
cls.service_offering.id))
    +        cls.vm = VirtualMachine.create(cls.api_client,
    +                                         cls.services["virtual_machine"],
    +                                         templateid=cls.template.id,
    +                                         accountid=cls.account.name,
    +                                         domainid=cls.domain.id,
    +                                         serviceofferingid=cls.service_offering.id,
    +                                         networkids=[str(cls.network.id)])
    +        cls.vm.password = "password"
    +
    +        cls.services["natrule1"] = {
    +            "privateport": 22,
    +            "publicport": 22,
    +            "protocol": "TCP"
    +        }
    +
    +        cls.services["configurableData"] = {
    +            "host": {
    +                "password": "password",
    +                "username": "root",
    +                "port": 22
    +            },
    +            "input": "INPUT",
    +            "forward": "FORWARD"
    +        }
    +
    +        cls._cleanup = [
    +            cls.vm,
    +            cls.network,
    +            cls.network_offering,
    +            cls.service_offering,
    +            cls.account
    +        ]
    +
    +    @classmethod
    +    def tearDownClass(cls):
    +        try:
    +            cleanup_resources(cls.api_client, cls._cleanup)
    +        except Exception as e:
    +            raise Exception("Warning: Exception during cleanup : %s" % e)
    +
    +    def setUp(self):
    +        self.apiclient = self.testClient.getApiClient()
    +        self.cleanup = []
    +
    +    def tearDown(self):
    +        try:
    +            cleanup_resources(self.apiclient, self.cleanup)
    +        except Exception as e:
    +            raise Exception("Warning: Exception during cleanup : %s" % e)
    +
    +
    +    @attr(tags=["advanced", "advancedns", "ssh"], required_hardware="true")
    +    def test_router_dns_externalipquery(self):
    +        """Checks that non-guest network IPs cannot access VR DNS"""
    +
    +        self.logger.debug("Starting test_router_dns_externalips...")
    +        routers = list_routers(
    +            self.apiclient,
    +            account=self.account.name,
    +            domainid=self.account.domainid
    +        )
    +
    +        self.assertEqual(
    +            isinstance(routers, list),
    +            True,
    +            "Check for list routers response return valid data"
    +        )
    +
    +        self.assertNotEqual(
    +            len(routers),
    +            0,
    +            "Check list router response"
    +        )
    +
    +        router = routers[0]
    +
    +        self.assertEqual(
    +            router.state,
    +            'Running',
    +            "Check list router response for router state"
    +        )
    +
    +        public_ips = list_publicIP(
    +            self.apiclient,
    +            account=self.account.name,
    +            domainid=self.account.domainid,
    +            zoneid=self.zone.id
    +        )
    +
    +        self.assertEqual(
    +            isinstance(public_ips, list),
    +            True,
    +            "Check for list public IPs response return valid data"
    +        )
    +
    +        public_ip = public_ips[0]
    +        self.logger.debug("Querying VR DNS IP: " + public_ip.ipaddress)
    +        resolver = dns.resolver.Resolver()
    +        resolver.namerservers = [public_ip.ipaddress]
    +        try:
    +            resolver.query('google.com', 'A')
    +            self.fail("Non-guest network IPs are able to access VR DNS, failing.")
    +        except:
    +            self.logger.debug("VR DNS query failed from non-guest network IP as expected")
    +
    +
    +    @attr(tags=["advanced", "advancedns", "ssh"], required_hardware="true")
    +    def test_router_dns_guestipquery(self):
    +        """Checks that guest VM can query VR DNS"""
    +
    +        self.logger.debug("Starting test_router_dns_guestipquery...")
    +        routers = list_routers(
    +            self.apiclient,
    +            account=self.account.name,
    +            domainid=self.account.domainid
    +        )
    +
    +        self.assertEqual(
    +            isinstance(routers, list),
    +            True,
    +            "Check for list routers response return valid data"
    +        )
    +
    +        self.assertNotEqual(
    +            len(routers),
    +            0,
    +            "Check list router response"
    +        )
    +
    +        router = routers[0]
    +
    +        self.assertEqual(
    +            router.state,
    +            'Running',
    +            "Check list router response for router state"
    +        )
    +
    +        public_ips = list_publicIP(
    +            self.apiclient,
    +            account=self.account.name,
    +            domainid=self.account.domainid,
    +            zoneid=self.zone.id
    +        )
    +
    +        self.assertEqual(
    +            isinstance(public_ips, list),
    +            True,
    +            "Check for list public IPs response return valid data"
    +        )
    +
    +        public_ip = public_ips[0]
    +
    +        self.logger.debug("Creating Firewall rule for VM ID: %s" % self.vm.id)
    +        FireWallRule.create(
    +            self.apiclient,
    +            ipaddressid=public_ip.id,
    +            protocol=self.services["natrule1"]["protocol"],
    +            cidrlist=['0.0.0.0/0'],
    +            startport=self.services["natrule1"]["publicport"],
    +            endport=self.services["natrule1"]["publicport"]
    +        )
    +
    +        self.logger.debug("Creating NAT rule for VM ID: %s" % self.vm.id)
    +        nat_rule1 = NATRule.create(
    +            self.apiclient,
    +            self.vm,
    +            self.services["natrule1"],
    +            public_ip.id
    +        )
    +        nat_rules = list_nat_rules(
    +            self.apiclient,
    +            id=nat_rule1.id
    +        )
    +        self.assertEqual(
    +            isinstance(nat_rules, list),
    +            True,
    +            "Check for list NAT rules response return valid data"
    +        )
    +        self.assertEqual(
    +            nat_rules[0].state,
    +            'Active',
    +            "Check list port forwarding rules"
    +        )
    +
    +        result = None
    +        try:
    +            self.logger.debug("SSH into guest VM with IP: %s" % nat_rule1.ipaddress)
    +            ssh = self.vm.get_ssh_client(ipaddress=nat_rule1.ipaddress, port=self.services['natrule1']["publicport"],
retries=8)
    +            result = str(ssh.execute("nslookup google.com"))
    +        except Exception as e:
    +            self.fail("Failed to SSH into VM - %s due to exception: %s" % (nat_rule1.ipaddress,
e))
    +
    +        self.assertTrue(result is not None and "google.com" in result and "#53" in result,
    --- End diff --
    
    Minor nit: Consider breaking up into three asserts with more detailed messages to improve
the isolation of a failure


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