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bind/bin/tests/system/rollover-algo-csk/tests_rollover_algo_csk_reconfig.py

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# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
#
# SPDX-License-Identifier: MPL-2.0
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, you can obtain one at https://mozilla.org/MPL/2.0/.
#
# See the COPYRIGHT file distributed with this work for additional
# information regarding copyright ownership.
# pylint: disable=redefined-outer-name,unused-import
import pytest
import isctest
from isctest.kasp import KeyTimingMetadata
from isctest.util import param
from rollover.common import (
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pytestmark,
alg,
size,
CDSS,
ALGOROLL_CONFIG,
ALGOROLL_IPUB,
ALGOROLL_IPUBC,
ALGOROLL_IRET,
ALGOROLL_IRETKSK,
ALGOROLL_KEYTTLPROP,
ALGOROLL_OFFSETS,
ALGOROLL_OFFVAL,
DURATION,
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TIMEDELTA,
)
CONFIG = ALGOROLL_CONFIG
POLICY = "csk-algoroll"
TIME_PASSED = 0 # set in reconfigure() fixture
@pytest.fixture(scope="module", autouse=True)
def reconfigure(ns6, templates):
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global TIME_PASSED # pylint: disable=global-statement
isctest.kasp.wait_keymgr_done(ns6, "step1.csk-algorithm-roll.kasp")
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templates.render("ns6/named.conf", {"csk_roll": True})
start_time = KeyTimingMetadata.now()
ns6.reconfigure()
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# Calculate time passed to correctly check for next key events.
TIME_PASSED = KeyTimingMetadata.now().value - start_time.value
@pytest.mark.parametrize(
"tld",
[
param("kasp"),
param("manual"),
],
)
def test_algoroll_csk_reconfig_step1(tld, ns6, alg, size):
zone = f"step1.csk-algorithm-roll.{tld}"
policy = f"{POLICY}-{tld}"
isctest.kasp.wait_keymgr_done(ns6, zone, reconfig=True)
if tld == "manual":
# Same as initial.
step = {
"zone": zone,
"cdss": CDSS,
"keyprops": [
f"csk 0 8 2048 goal:omnipresent dnskey:omnipresent krrsig:omnipresent zrrsig:omnipresent ds:omnipresent offset:{-DURATION['P7D']}",
],
"manual-mode": True,
"nextev": None,
}
keys = isctest.kasp.check_rollover_step(ns6, CONFIG, policy, step)
# Check logs.
tag = keys[0].key.tag
msg1 = f"keymgr-manual-mode: block retire DNSKEY {zone}/RSASHA256/{tag} (CSK)"
msg2 = f"keymgr-manual-mode: block new key generation for zone {zone} (policy {policy})"
ns6.log.expect(msg1)
ns6.log.expect(msg2)
# Force step.
with ns6.watch_log_from_here() as watcher:
ns6.rndc(f"dnssec -step {zone}")
watcher.wait_for_line(f"keymgr: {zone} done")
# Check state after step.
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step = {
"zone": zone,
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"cdss": CDSS,
"keyprops": [
# The RSASHA keys are outroducing.
f"csk 0 8 2048 goal:hidden dnskey:omnipresent krrsig:omnipresent zrrsig:omnipresent ds:omnipresent offset:{ALGOROLL_OFFVAL}",
# The ECDSAP256SHA256 keys are introducing.
f"csk 0 {alg} {size} goal:omnipresent dnskey:rumoured krrsig:rumoured zrrsig:rumoured ds:hidden",
],
# Next key event is when the ecdsa256 keys have been propagated.
"nextev": ALGOROLL_IPUB,
}
isctest.kasp.check_rollover_step(ns6, CONFIG, policy, step)
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@pytest.mark.parametrize(
"tld",
[
param("kasp"),
param("manual"),
],
)
def test_algoroll_csk_reconfig_step2(tld, ns6, alg, size):
zone = f"step2.csk-algorithm-roll.{tld}"
policy = f"{POLICY}-{tld}"
isctest.kasp.wait_keymgr_done(ns6, zone, reconfig=True)
# manual-mode: Nothing changing in the zone, no 'dnssec -step' required.
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step = {
"zone": zone,
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"cdss": CDSS,
"keyprops": [
# The RSASHA keys are outroducing, but need to stay present
# until the new algorithm chain of trust has been established.
# Thus the expected key states of these keys stay the same.
f"csk 0 8 2048 goal:hidden dnskey:omnipresent krrsig:omnipresent zrrsig:omnipresent ds:omnipresent offset:{ALGOROLL_OFFVAL}",
# The ECDSAP256SHA256 keys are introducing. The DNSKEY RRset is
# omnipresent, but the zone signatures are not.
f"csk 0 {alg} {size} goal:omnipresent dnskey:omnipresent krrsig:omnipresent zrrsig:rumoured ds:hidden offset:{ALGOROLL_OFFSETS['step2']}",
],
# Next key event is when all zone signatures are signed with the
# new algorithm. This is the child publication interval, minus
# the publication interval has already passed. Also, prevent
# intermittent false positives on slow platforms by subtracting
# the time passed between key creation and invoking 'rndc reconfig'.
"nextev": ALGOROLL_IPUBC - ALGOROLL_IPUB - TIME_PASSED,
}
isctest.kasp.check_rollover_step(ns6, CONFIG, policy, step)
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@pytest.mark.parametrize(
"tld",
[
param("kasp"),
param("manual"),
],
)
def test_algoroll_csk_reconfig_step3(tld, ns6, alg, size):
zone = f"step3.csk-algorithm-roll.{tld}"
policy = f"{POLICY}-{tld}"
isctest.kasp.wait_keymgr_done(ns6, zone, reconfig=True)
if tld == "manual":
# Same as step 2, but the zone signatures have become OMNIPRESENT.
step = {
"zone": zone,
"cdss": CDSS,
"keyprops": [
f"csk 0 8 2048 goal:hidden dnskey:omnipresent krrsig:omnipresent zrrsig:omnipresent ds:omnipresent offset:{ALGOROLL_OFFVAL}",
f"csk 0 {alg} {size} goal:omnipresent dnskey:omnipresent krrsig:omnipresent zrrsig:omnipresent ds:hidden offset:{ALGOROLL_OFFSETS['step3']}",
],
"manual-mode": True,
"nextev": None,
}
keys = isctest.kasp.check_rollover_step(ns6, CONFIG, policy, step)
# Check logs.
tag = keys[1].key.tag
msg = f"keymgr-manual-mode: block transition CSK {zone}/ECDSAP256SHA256/{tag} type DS state HIDDEN to state RUMOURED"
ns6.log.expect(msg)
# Force step.
with ns6.watch_log_from_here() as watcher:
ns6.rndc(f"dnssec -step {zone}")
watcher.wait_for_line(f"keymgr: {zone} done")
# Check logs.
tag = keys[0].key.tag
msg = f"keymgr-manual-mode: block transition CSK {zone}/RSASHA256/{tag} type DS state OMNIPRESENT to state UNRETENTIVE"
if msg in ns6.log:
# Force step.
isctest.log.debug(
f"keymgr-manual-mode blocking transition CSK {zone}/RSASHA256/{tag} type DS state OMNIPRESENT to state UNRETENTIVE, step again"
)
with ns6.watch_log_from_here() as watcher:
ns6.rndc(f"dnssec -step {zone}")
watcher.wait_for_line(f"keymgr: {zone} done")
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step = {
"zone": zone,
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"cdss": CDSS,
"keyprops": [
# The DS can be swapped.
f"csk 0 8 2048 goal:hidden dnskey:omnipresent krrsig:omnipresent zrrsig:omnipresent ds:unretentive offset:{ALGOROLL_OFFVAL}",
f"csk 0 {alg} {size} goal:omnipresent dnskey:omnipresent krrsig:omnipresent zrrsig:omnipresent ds:rumoured offset:{ALGOROLL_OFFSETS['step3']}",
],
# Next key event is when the DS becomes OMNIPRESENT. This happens
# after the publication interval of the parent side.
"nextev": ALGOROLL_IRETKSK - TIME_PASSED,
}
isctest.kasp.check_rollover_step(ns6, CONFIG, policy, step)
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@pytest.mark.parametrize(
"tld",
[
param("kasp"),
param("manual"),
],
)
def test_algoroll_csk_reconfig_step4(tld, ns6, alg, size):
zone = f"step4.csk-algorithm-roll.{tld}"
policy = f"{POLICY}-{tld}"
isctest.kasp.wait_keymgr_done(ns6, zone, reconfig=True)
if tld == "manual":
# Same as step 3, but the DS has become HIDDEN/OMNIPRESENT.
step = {
"zone": zone,
"cdss": CDSS,
"keyprops": [
f"csk 0 8 2048 goal:hidden dnskey:omnipresent krrsig:omnipresent zrrsig:omnipresent ds:hidden offset:{ALGOROLL_OFFVAL}",
f"csk 0 {alg} {size} goal:omnipresent dnskey:omnipresent krrsig:omnipresent zrrsig:omnipresent ds:omnipresent offset:{ALGOROLL_OFFSETS['step4']}",
],
"manual-mode": True,
"nextev": None,
}
keys = isctest.kasp.check_rollover_step(ns6, CONFIG, policy, step)
# Check logs.
tag = keys[0].key.tag
msg = f"keymgr-manual-mode: block transition CSK {zone}/RSASHA256/{tag} type DNSKEY state OMNIPRESENT to state UNRETENTIVE"
ns6.log.expect(msg)
# Force step.
with ns6.watch_log_from_here() as watcher:
ns6.rndc(f"dnssec -step {zone}")
watcher.wait_for_line(f"keymgr: {zone} done")
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step = {
"zone": zone,
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"cdss": CDSS,
"keyprops": [
# The old DS is HIDDEN, we can remove the old algorithm records.
f"csk 0 8 2048 goal:hidden dnskey:unretentive krrsig:unretentive zrrsig:unretentive ds:hidden offset:{ALGOROLL_OFFVAL}",
f"csk 0 {alg} {size} goal:omnipresent dnskey:omnipresent krrsig:omnipresent zrrsig:omnipresent ds:omnipresent offset:{ALGOROLL_OFFSETS['step4']}",
],
# Next key event is when the old DNSKEY becomes HIDDEN.
# This happens after the DNSKEY TTL plus zone propagation delay.
"nextev": ALGOROLL_KEYTTLPROP,
}
isctest.kasp.check_rollover_step(ns6, CONFIG, policy, step)
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@pytest.mark.parametrize(
"tld",
[
param("kasp"),
param("manual"),
],
)
def test_algoroll_csk_reconfig_step5(tld, ns6, alg, size):
zone = f"step5.csk-algorithm-roll.{tld}"
policy = f"{POLICY}-{tld}"
isctest.kasp.wait_keymgr_done(ns6, zone, reconfig=True)
# manual-mode: Nothing changing in the zone, no 'dnssec -step' required.
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step = {
"zone": zone,
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"cdss": CDSS,
"keyprops": [
# The DNSKEY becomes HIDDEN.
f"csk 0 8 2048 goal:hidden dnskey:hidden krrsig:hidden zrrsig:unretentive ds:hidden offset:{ALGOROLL_OFFVAL}",
f"csk 0 {alg} {size} goal:omnipresent dnskey:omnipresent krrsig:omnipresent zrrsig:omnipresent ds:omnipresent offset:{ALGOROLL_OFFSETS['step5']}",
],
# Next key event is when the RSASHA signatures become HIDDEN.
# This happens after the max-zone-ttl plus zone propagation delay
# minus the time already passed since the UNRETENTIVE state has
# been reached. Prevent intermittent false positives on slow
# platforms by subtracting the number of seconds which passed
# between key creation and invoking 'rndc reconfig'.
"nextev": ALGOROLL_IRET - ALGOROLL_IRETKSK - ALGOROLL_KEYTTLPROP - TIME_PASSED,
}
isctest.kasp.check_rollover_step(ns6, CONFIG, policy, step)
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@pytest.mark.parametrize(
"tld",
[
param("kasp"),
param("manual"),
],
)
def test_algoroll_csk_reconfig_step6(tld, ns6, alg, size):
zone = f"step6.csk-algorithm-roll.{tld}"
policy = f"{POLICY}-{tld}"
isctest.kasp.wait_keymgr_done(ns6, zone, reconfig=True)
# manual-mode: Nothing changing in the zone, no 'dnssec -step' required.
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step = {
"zone": zone,
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"cdss": CDSS,
"keyprops": [
# The zone signatures are now HIDDEN.
f"csk 0 8 2048 goal:hidden dnskey:hidden krrsig:hidden zrrsig:hidden ds:hidden offset:{ALGOROLL_OFFVAL}",
f"csk 0 {alg} {size} goal:omnipresent dnskey:omnipresent krrsig:omnipresent zrrsig:omnipresent ds:omnipresent offset:{ALGOROLL_OFFSETS['step6']}",
],
# Next key event is never since we established the policy and the
# keys have an unlimited lifetime. Fallback to the default
# loadkeys interval.
"nextev": TIMEDELTA["PT1H"],
}
isctest.kasp.check_rollover_step(ns6, CONFIG, policy, step)