Christian Heimes
3a8f0bb16b
With shorter TTL, several named restarts are no longer necessary to make tests pass. The test case TestZoneSigningWithoutNamedRestart is no longer relevant, too. Modification of the root zone and disabling/enabling signing still seems to need a restart. I have marked those cases as TODO. See: https://pagure.io/freeipa/issue/5348 Signed-off-by: Christian Heimes <cheimes@redhat.com> Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
553 lines
19 KiB
Python
553 lines
19 KiB
Python
#
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# Copyright (C) 2015 FreeIPA Contributors see COPYING for license
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#
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from __future__ import absolute_import
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import logging
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import time
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import dns.dnssec
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import dns.resolver
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import dns.name
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from ipatests.test_integration.base import IntegrationTest
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from ipatests.pytest_plugins.integration import tasks
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from ipaplatform.paths import paths
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logger = logging.getLogger(__name__)
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# Sleep 5 seconds at most when waiting for LDAP updates
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# for DNSSEC changes. Test zones should be updated with 1 second TTL
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DNSSEC_SLEEP = 5
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test_zone = "dnssec.test."
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test_zone_repl = "dnssec-replica.test."
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root_zone = "."
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example_test_zone = "example.test."
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example2_test_zone = "example2.test."
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example3_test_zone = "example3.test."
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def resolve_with_dnssec(nameserver, query, rtype="SOA"):
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res = dns.resolver.Resolver()
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res.nameservers = [nameserver]
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res.lifetime = 10 # wait max 10 seconds for reply
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# enable Authenticated Data + Checking Disabled flags
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res.set_flags(dns.flags.AD | dns.flags.CD)
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# enable EDNS v0 + enable DNSSEC-Ok flag
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res.use_edns(0, dns.flags.DO, 0)
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ans = res.query(query, rtype)
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return ans
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def get_RRSIG_record(nameserver, query, rtype="SOA"):
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ans = resolve_with_dnssec(nameserver, query, rtype=rtype)
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return ans.response.find_rrset(
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ans.response.answer, dns.name.from_text(query),
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dns.rdataclass.IN, dns.rdatatype.RRSIG,
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dns.rdatatype.from_text(rtype))
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def is_record_signed(nameserver, query, rtype="SOA"):
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try:
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get_RRSIG_record(nameserver, query, rtype=rtype)
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except KeyError:
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return False
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except dns.exception.DNSException:
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return False
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return True
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def wait_until_record_is_signed(nameserver, record, rtype="SOA",
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timeout=100):
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"""
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Returns True if record is signed, or False on timeout
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:param nameserver: nameserver to query
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:param record: query
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:param rtype: record type
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:param timeout:
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:return: True if records is signed, False if timeout
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"""
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logger.info("Waiting for signed %s record of %s from server %s (timeout "
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"%s sec)", rtype, record, nameserver, timeout)
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wait_until = time.time() + timeout
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while time.time() < wait_until:
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if is_record_signed(nameserver, record, rtype=rtype):
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return True
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time.sleep(1)
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return False
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def dnszone_add_dnssec(host, test_zone):
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"""Add dnszone with dnssec and short TTL
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"""
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args = [
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"ipa",
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"dnszone-add", test_zone,
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"--skip-overlap-check",
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"--dnssec", "true",
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"--ttl", "1",
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"--default-ttl", "1",
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]
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return host.run_command(args)
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class TestInstallDNSSECLast(IntegrationTest):
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"""Simple DNSSEC test
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Install a server and a replica with DNS, then reinstall server
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as DNSSEC master
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"""
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num_replicas = 1
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topology = 'star'
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@classmethod
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def install(cls, mh):
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tasks.install_master(cls.master, setup_dns=True)
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tasks.install_replica(cls.master, cls.replicas[0], setup_dns=True)
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def test_install_dnssec_master(self):
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"""Both master and replica have DNS installed"""
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args = [
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"ipa-dns-install",
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"--dnssec-master",
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"--forwarder", self.master.config.dns_forwarder,
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"-U",
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]
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self.master.run_command(args)
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def test_if_zone_is_signed_master(self):
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# add zone with enabled DNSSEC signing on master
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dnszone_add_dnssec(self.master, test_zone)
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# test master
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assert wait_until_record_is_signed(
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self.master.ip, test_zone, timeout=100
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), "Zone %s is not signed (master)" % test_zone
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# test replica
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assert wait_until_record_is_signed(
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self.replicas[0].ip, test_zone, timeout=200
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), "DNS zone %s is not signed (replica)" % test_zone
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def test_if_zone_is_signed_replica(self):
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# add zone with enabled DNSSEC signing on replica
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dnszone_add_dnssec(self.replicas[0], test_zone_repl)
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# test replica
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assert wait_until_record_is_signed(
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self.replicas[0].ip, test_zone_repl, timeout=300
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), "Zone %s is not signed (replica)" % test_zone_repl
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# we do not need to wait, on master zones should be singed faster
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# than on replicas
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assert wait_until_record_is_signed(
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self.master.ip, test_zone_repl, timeout=5
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), "DNS zone %s is not signed (master)" % test_zone
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def test_disable_reenable_signing_master(self):
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dnskey_old = resolve_with_dnssec(self.master.ip, test_zone,
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rtype="DNSKEY").rrset
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# disable DNSSEC signing of zone on master
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args = [
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"ipa",
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"dnszone-mod", test_zone,
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"--dnssec", "false",
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]
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self.master.run_command(args)
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time.sleep(DNSSEC_SLEEP)
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# test master
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assert not is_record_signed(
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self.master.ip, test_zone
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), "Zone %s is still signed (master)" % test_zone
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# test replica
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assert not is_record_signed(
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self.replicas[0].ip, test_zone
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), "DNS zone %s is still signed (replica)" % test_zone
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# reenable DNSSEC signing
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args = [
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"ipa",
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"dnszone-mod", test_zone,
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"--dnssec", "true",
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]
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self.master.run_command(args)
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# TODO: test require restart
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tasks.restart_named(self.master, self.replicas[0])
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# test master
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assert wait_until_record_is_signed(
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self.master.ip, test_zone, timeout=100
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), "Zone %s is not signed (master)" % test_zone
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# test replica
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assert wait_until_record_is_signed(
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self.replicas[0].ip, test_zone, timeout=200
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), "DNS zone %s is not signed (replica)" % test_zone
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dnskey_new = resolve_with_dnssec(self.master.ip, test_zone,
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rtype="DNSKEY").rrset
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assert dnskey_old != dnskey_new, "DNSKEY should be different"
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def test_disable_reenable_signing_replica(self):
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dnskey_old = resolve_with_dnssec(self.replicas[0].ip, test_zone_repl,
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rtype="DNSKEY").rrset
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# disable DNSSEC signing of zone on replica
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args = [
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"ipa",
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"dnszone-mod", test_zone_repl,
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"--dnssec", "false",
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]
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self.master.run_command(args)
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time.sleep(DNSSEC_SLEEP)
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# test master
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assert not is_record_signed(
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self.master.ip, test_zone_repl
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), "Zone %s is still signed (master)" % test_zone_repl
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# test replica
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assert not is_record_signed(
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self.replicas[0].ip, test_zone_repl
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), "DNS zone %s is still signed (replica)" % test_zone_repl
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# reenable DNSSEC signing
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args = [
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"ipa",
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"dnszone-mod", test_zone_repl,
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"--dnssec", "true",
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]
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self.master.run_command(args)
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# TODO: test require restart
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tasks.restart_named(self.master, self.replicas[0])
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# test master
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assert wait_until_record_is_signed(
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self.master.ip, test_zone_repl, timeout=100
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), "Zone %s is not signed (master)" % test_zone_repl
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# test replica
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assert wait_until_record_is_signed(
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self.replicas[0].ip, test_zone_repl, timeout=200
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), "DNS zone %s is not signed (replica)" % test_zone_repl
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dnskey_new = resolve_with_dnssec(self.replicas[0].ip, test_zone_repl,
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rtype="DNSKEY").rrset
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assert dnskey_old != dnskey_new, "DNSKEY should be different"
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class TestInstallDNSSECFirst(IntegrationTest):
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"""Simple DNSSEC test
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Install the server with DNSSEC and then install the replica with DNS
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"""
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num_replicas = 1
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topology = 'star'
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@classmethod
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def install(cls, mh):
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tasks.install_master(cls.master, setup_dns=False)
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args = [
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"ipa-dns-install",
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"--dnssec-master",
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"--forwarder", cls.master.config.dns_forwarder,
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"-U",
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]
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cls.master.run_command(args)
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tasks.install_replica(cls.master, cls.replicas[0], setup_dns=True)
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# backup trusted key
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tasks.backup_file(cls.master, paths.DNSSEC_TRUSTED_KEY)
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tasks.backup_file(cls.replicas[0], paths.DNSSEC_TRUSTED_KEY)
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@classmethod
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def uninstall(cls, mh):
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# restore trusted key
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tasks.restore_files(cls.master)
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tasks.restore_files(cls.replicas[0])
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super(TestInstallDNSSECFirst, cls).uninstall(mh)
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def test_sign_root_zone(self):
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dnszone_add_dnssec(self.master, root_zone)
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# make BIND happy: add the glue record and delegate zone
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args = [
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"ipa", "dnsrecord-add", root_zone, self.master.hostname,
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"--a-rec=" + self.master.ip
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]
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self.master.run_command(args)
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args = [
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"ipa", "dnsrecord-add", root_zone, self.replicas[0].hostname,
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"--a-rec=" + self.replicas[0].ip
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]
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self.master.run_command(args)
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time.sleep(DNSSEC_SLEEP)
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args = [
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"ipa", "dnsrecord-add", root_zone, self.master.domain.name,
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"--ns-rec=" + self.master.hostname
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]
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self.master.run_command(args)
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# test master
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assert wait_until_record_is_signed(
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self.master.ip, root_zone, timeout=100
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), "Zone %s is not signed (master)" % root_zone
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# test replica
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assert wait_until_record_is_signed(
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self.replicas[0].ip, root_zone, timeout=300
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), "Zone %s is not signed (replica)" % root_zone
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def test_chain_of_trust(self):
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"""
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Validate signed DNS records, using our own signed root zone
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:return:
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"""
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dnszone_add_dnssec(self.master, example_test_zone)
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# delegation
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args = [
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"ipa", "dnsrecord-add", root_zone, example_test_zone,
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"--ns-rec=" + self.master.hostname
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]
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self.master.run_command(args)
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# TODO: test require restart
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tasks.restart_named(self.master, self.replicas[0])
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# wait until zone is signed
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assert wait_until_record_is_signed(
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self.master.ip, example_test_zone, timeout=100
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), "Zone %s is not signed (master)" % example_test_zone
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# wait until zone is signed
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assert wait_until_record_is_signed(
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self.replicas[0].ip, example_test_zone, timeout=200
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), "Zone %s is not signed (replica)" % example_test_zone
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# GET DNSKEY records from zone
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ans = resolve_with_dnssec(self.master.ip, example_test_zone,
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rtype="DNSKEY")
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dnskey_rrset = ans.response.get_rrset(
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ans.response.answer,
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dns.name.from_text(example_test_zone),
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dns.rdataclass.IN,
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dns.rdatatype.DNSKEY)
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assert dnskey_rrset, "No DNSKEY records received"
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logger.debug("DNSKEY records returned: %s", dnskey_rrset.to_text())
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# generate DS records
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ds_records = []
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for key_rdata in dnskey_rrset:
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if key_rdata.flags != 257:
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continue # it is not KSK
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ds_records.append(dns.dnssec.make_ds(example_test_zone, key_rdata,
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'sha256'))
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assert ds_records, ("No KSK returned from the %s zone" %
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example_test_zone)
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logger.debug("DS records for %s created: %r", example_test_zone,
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ds_records)
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# add DS records to root zone
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args = [
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"ipa", "dnsrecord-add", root_zone, example_test_zone,
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# DS record requires to coexists with NS
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"--ns-rec", self.master.hostname,
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]
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for ds in ds_records:
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args.append("--ds-rec")
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args.append(ds.to_text())
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self.master.run_command(args)
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# wait until DS records it replicated
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assert wait_until_record_is_signed(
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self.replicas[0].ip, example_test_zone, timeout=100,
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rtype="DS"
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), "No DS record of '%s' returned from replica" % example_test_zone
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# extract DSKEY from root zone
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ans = resolve_with_dnssec(self.master.ip, root_zone,
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rtype="DNSKEY")
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dnskey_rrset = ans.response.get_rrset(ans.response.answer,
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dns.name.from_text(root_zone),
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dns.rdataclass.IN,
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dns.rdatatype.DNSKEY)
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assert dnskey_rrset, "No DNSKEY records received"
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logger.debug("DNSKEY records returned: %s", dnskey_rrset.to_text())
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# export trust keys for root zone
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root_key_rdatas = []
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for key_rdata in dnskey_rrset:
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if key_rdata.flags != 257:
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continue # it is not KSK
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root_key_rdatas.append(key_rdata)
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assert root_key_rdatas, "No KSK returned from the root zone"
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root_keys_rrset = dns.rrset.from_rdata_list(dnskey_rrset.name,
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dnskey_rrset.ttl,
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root_key_rdatas)
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logger.debug("Root zone trusted key: %s", root_keys_rrset.to_text())
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# set trusted key for our root zone
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self.master.put_file_contents(paths.DNSSEC_TRUSTED_KEY,
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root_keys_rrset.to_text() + '\n')
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self.replicas[0].put_file_contents(paths.DNSSEC_TRUSTED_KEY,
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root_keys_rrset.to_text() + '\n')
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# verify signatures
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time.sleep(DNSSEC_SLEEP)
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args = [
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"drill", "@localhost", "-k",
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paths.DNSSEC_TRUSTED_KEY, "-S",
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example_test_zone, "SOA"
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]
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# test if signature chains are valid
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self.master.run_command(args)
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self.replicas[0].run_command(args)
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class TestMigrateDNSSECMaster(IntegrationTest):
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"""test DNSSEC master migration
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Install a server and a replica with DNS, then reinstall server
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as DNSSEC master
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Test:
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* migrate dnssec master to replica
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* create new zone
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* verify if zone is signed on all replicas
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* add new replica
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* add new zone
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* test if new zone is signed on all replicas
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"""
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num_replicas = 2
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topology = 'star'
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@classmethod
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def install(cls, mh):
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tasks.install_master(cls.master, setup_dns=True)
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args = [
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"ipa-dns-install",
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"--dnssec-master",
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"--forwarder", cls.master.config.dns_forwarder,
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"-U",
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]
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cls.master.run_command(args)
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tasks.install_replica(cls.master, cls.replicas[0], setup_dns=True)
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def test_migrate_dnssec_master(self):
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"""Both master and replica have DNS installed"""
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backup_filename = "/var/lib/ipa/ipa-kasp.db.backup"
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replica_backup_filename = "/tmp/ipa-kasp.db.backup"
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# add test zone
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dnszone_add_dnssec(self.master, example_test_zone)
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# wait until zone is signed
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assert wait_until_record_is_signed(
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self.master.ip, example_test_zone, timeout=100
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), "Zone %s is not signed (master)" % example_test_zone
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# wait until zone is signed
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assert wait_until_record_is_signed(
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self.replicas[0].ip, example_test_zone, timeout=200
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), "Zone %s is not signed (replica)" % example_test_zone
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dnskey_old = resolve_with_dnssec(self.master.ip, example_test_zone,
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rtype="DNSKEY").rrset
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# migrate dnssec master to replica
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args = [
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"ipa-dns-install",
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"--disable-dnssec-master",
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"--forwarder", self.master.config.dns_forwarder,
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"--force",
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"-U",
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]
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self.master.run_command(args)
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# move content of "ipa-kasp.db.backup" to replica
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kasp_db_backup = self.master.get_file_contents(backup_filename)
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self.replicas[0].put_file_contents(replica_backup_filename,
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kasp_db_backup)
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args = [
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"ipa-dns-install",
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"--dnssec-master",
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"--kasp-db", replica_backup_filename,
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"--forwarder", self.master.config.dns_forwarder,
|
|
"-U",
|
|
]
|
|
self.replicas[0].run_command(args)
|
|
|
|
# wait until zone is signed
|
|
assert wait_until_record_is_signed(
|
|
self.master.ip, example_test_zone, timeout=100
|
|
), "Zone %s is not signed after migration (master)" % example_test_zone
|
|
# wait until zone is signed
|
|
assert wait_until_record_is_signed(
|
|
self.replicas[0].ip, example_test_zone, timeout=200
|
|
), "Zone %s is not signed after migration (replica)" % example_test_zone
|
|
|
|
# test if dnskey are the same
|
|
dnskey_new = resolve_with_dnssec(self.master.ip, example_test_zone,
|
|
rtype="DNSKEY").rrset
|
|
assert dnskey_old == dnskey_new, "DNSKEY should be the same"
|
|
|
|
# add test zone
|
|
dnszone_add_dnssec(self.replicas[0], example2_test_zone)
|
|
# wait until zone is signed
|
|
assert wait_until_record_is_signed(
|
|
self.replicas[0].ip, example2_test_zone, timeout=100
|
|
), ("Zone %s is not signed after migration (replica - dnssec master)"
|
|
% example2_test_zone)
|
|
# wait until zone is signed
|
|
assert wait_until_record_is_signed(
|
|
self.master.ip, example2_test_zone, timeout=200
|
|
), ("Zone %s is not signed after migration (master)"
|
|
% example2_test_zone)
|
|
|
|
# add new replica
|
|
tasks.install_replica(self.master, self.replicas[1], setup_dns=True)
|
|
|
|
# test if originial zones are signed on new replica
|
|
# wait until zone is signed
|
|
assert wait_until_record_is_signed(
|
|
self.replicas[1].ip, example_test_zone, timeout=200
|
|
), ("Zone %s is not signed (new replica)"
|
|
% example_test_zone)
|
|
# wait until zone is signed
|
|
assert wait_until_record_is_signed(
|
|
self.replicas[1].ip, example2_test_zone, timeout=200
|
|
), ("Zone %s is not signed (new replica)"
|
|
% example2_test_zone)
|
|
|
|
# add new zone to new replica
|
|
dnszone_add_dnssec(self.replicas[0], example3_test_zone)
|
|
# wait until zone is signed
|
|
assert wait_until_record_is_signed(
|
|
self.replicas[1].ip, example3_test_zone, timeout=200
|
|
), ("Zone %s is not signed (new replica)"
|
|
% example3_test_zone)
|
|
assert wait_until_record_is_signed(
|
|
self.replicas[0].ip, example3_test_zone, timeout=200
|
|
), ("Zone %s is not signed (replica)"
|
|
% example3_test_zone)
|
|
# wait until zone is signed
|
|
assert wait_until_record_is_signed(
|
|
self.master.ip, example3_test_zone, timeout=200
|
|
), ("Zone %s is not signed (master)"
|
|
% example3_test_zone)
|