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From 4fdab0c94c4e17e42e5f38a0e671bea39bcc9b74 Mon Sep 17 00:00:00 2001
From: Anuja More <amore@redhat.com>
Date: Mon, 9 Aug 2021 20:57:22 +0530
Subject: [PATCH] ipatests: Test unsecure nsupdate.
The test configures an external bind server on the ipa-server
(not the IPA-embedded DNS server) that allows unauthenticated nsupdates.
When the IPA client is registered using ipa-client-install,
DNS records are added for the client in the bind server using nsupdate.
The first try is using GSS-TIG but fails as expected, and the client
installer then tries with unauthenticated nsupdate.
Related : https://pagure.io/freeipa/issue/8402
Signed-off-by: Anuja More <amore@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>
---
.../test_installation_client.py | 118 ++++++++++++++++++
1 file changed, 118 insertions(+)
diff --git a/ipatests/test_integration/test_installation_client.py b/ipatests/test_integration/test_installation_client.py
index fa59a5255..014b0f6ab 100644
--- a/ipatests/test_integration/test_installation_client.py
+++ b/ipatests/test_integration/test_installation_client.py
@@ -8,10 +8,15 @@ Module provides tests for various options of ipa-client-install.
from __future__ import absolute_import
+import pytest
+import re
import shlex
+import textwrap
+from ipaplatform.paths import paths
from ipatests.test_integration.base import IntegrationTest
from ipatests.pytest_ipa.integration import tasks
+from ipatests.pytest_ipa.integration.firewall import Firewall
class TestInstallClient(IntegrationTest):
@@ -70,3 +75,116 @@ class TestInstallClient(IntegrationTest):
extra_args=['--ssh-trust-dns'])
result = self.clients[0].run_command(['cat', '/etc/ssh/ssh_config'])
assert 'HostKeyAlgorithms' not in result.stdout_text
+
+
+class TestClientInstallBind(IntegrationTest):
+ """
+ The test configures an external bind server on the ipa-server
+ (not the IPA-embedded DNS server) that allows unauthenticated nsupdates.
+ When the IPA client is registered using ipa-client-install,
+ DNS records are added for the client in the bind server using nsupdate.
+ The first try is using GSS-TIG but fails as expected, and the client
+ installer then tries with unauthenticated nsupdate.
+ """
+
+ num_clients = 1
+
+ @classmethod
+ def install(cls, mh):
+ cls.client = cls.clients[0]
+
+ @pytest.fixture
+ def setup_bindserver(self):
+ bindserver = self.master
+ named_conf_backup = tasks.FileBackup(self.master, paths.NAMED_CONF)
+ # create a zone in the BIND server that is identical to the IPA
+ add_zone = textwrap.dedent("""
+ zone "{domain}" IN {{ type master;
+ file "{domain}.db"; allow-query {{ any; }};
+ allow-update {{ any; }}; }};
+ """).format(domain=bindserver.domain.name)
+
+ namedcfg = bindserver.get_file_contents(
+ paths.NAMED_CONF, encoding='utf-8')
+ namedcfg += '\n' + add_zone
+ bindserver.put_file_contents(paths.NAMED_CONF, namedcfg)
+
+ def update_contents(path, pattern, replace):
+ contents = bindserver.get_file_contents(path, encoding='utf-8')
+ namedcfg_query = re.sub(pattern, replace, contents)
+ bindserver.put_file_contents(path, namedcfg_query)
+
+ update_contents(paths.NAMED_CONF, 'localhost;', 'any;')
+ update_contents(paths.NAMED_CONF, "listen-on port 53 { 127.0.0.1; };",
+ "#listen-on port 53 { 127.0.0.1; };")
+ update_contents(paths.NAMED_CONF, "listen-on-v6 port 53 { ::1; };",
+ "#listen-on-v6 port 53 { ::1; };")
+
+ add_records = textwrap.dedent("""
+ @ IN SOA {fqdn}. root.{domain}. (
+ 1001 ;Serial
+ 3H ;Refresh
+ 15M ;Retry
+ 1W ;Expire
+ 1D ;Minimum 1D
+ )
+ @ IN NS {fqdn}.
+ ns1 IN A {bindserverip}
+ _kerberos.{domain}. IN TXT {zoneupper}
+ {fqdn}. IN A {bindserverip}
+ ipa-ca.{domain}. IN A {bindserverip}
+ _kerberos-master._tcp.{domain}. IN SRV 0 100 88 {fqdn}.
+ _kerberos-master._udp.{domain}. IN SRV 0 100 88 {fqdn}.
+ _kerberos._tcp.{domain}. IN SRV 0 100 88 {fqdn}.
+ _kerberos._udp.{domain}. IN SRV 0 100 88 {fqdn}.
+ _kpasswd._tcp.{domain}. IN SRV 0 100 464 {fqdn}.
+ _kpasswd._udp.{domain}. IN SRV 0 100 464 {fqdn}.
+ _ldap._tcp.{domain}. IN SRV 0 100 389 {fqdn}.
+ """).format(
+ fqdn=bindserver.hostname,
+ domain=bindserver.domain.name,
+ bindserverip=bindserver.ip,
+ zoneupper=bindserver.domain.name.upper()
+ )
+ bindserverdb = "/var/named/{0}.db".format(bindserver.domain.name)
+ bindserver.put_file_contents(bindserverdb, add_records)
+ bindserver.run_command(['systemctl', 'start', 'named'])
+ Firewall(bindserver).enable_services(["dns"])
+ yield
+ named_conf_backup.restore()
+ bindserver.run_command(['rm', '-rf', bindserverdb])
+
+ def test_client_nsupdate(self, setup_bindserver):
+ """Test secure nsupdate failed, then try unsecure nsupdate..
+
+ Test to verify when bind is configured with dynamic update policy,
+ and during client-install 'nsupdate -g' fails then it should run with
+ second call using unauthenticated nsupdate.
+
+ Related : https://pagure.io/freeipa/issue/8402
+ """
+ # with pre-configured bind server, install ipa-server without dns.
+ tasks.install_master(self.master, setup_dns=False)
+ self.client.resolver.backup()
+ self.client.resolver.setup_resolver(
+ self.master.ip, self.master.domain.name)
+ try:
+ self.client.run_command(['ipa-client-install', '-U',
+ '--domain', self.client.domain.name,
+ '--realm', self.client.domain.realm,
+ '-p', self.client.config.admin_name,
+ '-w', self.client.config.admin_password,
+ '--server', self.master.hostname])
+ # call unauthenticated nsupdate if GSS-TSIG nsupdate failed.
+ str1 = "nsupdate (GSS-TSIG) failed"
+ str2 = "'/usr/bin/nsupdate', '/etc/ipa/.dns_update.txt'"
+ client_log = self.client.get_file_contents(
+ paths.IPACLIENT_INSTALL_LOG, encoding='utf-8'
+ )
+ assert str1 in client_log and str2 in client_log
+ dig_after = self.client.run_command(
+ ['dig', '@{0}'.format(self.master.ip), self.client.hostname,
+ '-t', 'SSHFP'])
+ assert "ANSWER: 0" not in dig_after.stdout_text.strip()
+ finally:
+ self.client.resolver.restore()
--
2.31.1
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