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Thomas Woerner 77803587d6 DNSResolver: Fix use of nameservers with ports 
IPA DNS zone and forwardzone commands allow to use nameservers with ports
as "SERVER_IP port PORT_NUMBER". bind is supporting this syntax, but the
Resolver in dnspython that is used to verify the list of forwarders
(nameservers) is only allowing to have IP addresses in this list. With
dnspython version 2.20 there is a new validator in dns.resolver.BaseResolver
that ensures this.

Refs:
- https://bind9.readthedocs.io/en/v9_18_4/reference.html#zone-statement-grammar
- https://github.com/rthalley/dnspython/blob/master/dns/resolver.py#L1094

ipapython/dnsutil.DNSResolver derives from dns.resolver.Resolver. The setter
for nameservers has been overloaded in the DNSResolver class to split out
the port numbers into the nameserver_ports dict { SERVER_IP: PORT_NUMBER }.
After the setter for nameservers succeeded, nameserver_ports is set.
nameserver_ports is used in the resolve() method of dns.resolver.Resolver.

Additional tests have been added to verify that nameservers and also
nameserver_ports are properly set and also valid.

Fixes: https://pagure.io/freeipa/issue/9158

Signed-off-by: Thomas Woerner <twoerner@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
2022-08-16 13:49:40 +02:00
..
install pylint: Fix arguments-renamed 2022-03-11 13:37:08 -05:00
__init__.py Rename ipa-python directory to ipapython so it is a real python library 2009-02-09 14:35:15 -05:00
admintool.py pylint: Fix useless-suppression 2022-03-11 13:37:08 -05:00
certdb.py pylint: Fix consider-using-in 2022-03-11 13:37:08 -05:00
config.py Unify access to FQDN 2020-10-26 17:11:19 +11:00
cookie.py pylint: Skip unused-private-member for unsupported cases 2022-03-11 13:37:08 -05:00
directivesetter.py Grammar: whitespace is a word 2020-06-23 10:16:29 +02:00
dn_ctypes.py Load libldap_r-*.so.2 2019-05-14 12:27:55 +02:00
dn.py Removes several pylint warnings. 2019-09-27 09:38:32 +02:00
dnsutil.py DNSResolver: Fix use of nameservers with ports 2022-08-16 13:49:40 +02:00
dogtag.py pylint: Fix useless-suppression 2022-03-11 13:37:08 -05:00
errors.py Replace StandardError with Exception 2015-09-30 10:51:36 +02:00
fqdn.py Easier to use ipa_gethostfqdn() 2020-10-26 17:11:19 +11:00
graph.py Py3: Remove subclassing from object 2018-09-27 11:49:04 +02:00
ipa_log_manager.py Remove deprecated object logger 2019-04-23 12:55:35 +02:00
ipachangeconf.py pylint: Fix useless-suppression 2022-03-11 13:37:08 -05:00
ipaldap.py Add switch for LDAP cache debug output 2022-06-14 15:56:21 +03:00
ipautil.py dnssec daemons: read the dns context config file for debug state 2022-06-02 11:17:57 +02:00
ipavalidate.py Change FreeIPA license to GPLv3+ 2010-12-20 17:19:53 -05:00
kerberos.py Py3: Replace six.bytes_type with bytes 2018-09-27 16:11:18 +02:00
kernel_keyring.py Don't configure KEYRING ccache in containers 2019-01-18 11:33:11 +01:00
Makefile.am ipapython: fix DEFAULT_PLUGINS in version.py 2017-03-09 18:39:48 +01:00
nsslib.py Remove ipapython.nsslib as it is not used anymore 2017-03-01 09:43:41 +00:00
README Replace DNS client based on acutil with python-dns 2012-05-24 13:55:56 +02:00
session_storage.py Fix pylint warnings inconsistent-return-statements 2017-12-18 11:51:14 +01:00
setup.cfg Port all setup.py to setuptools 2016-10-20 18:43:37 +02:00
setup.py Add helpers for resolve1 and nameservers 2020-09-23 16:44:26 +02:00
ssh.py pylint: Fix useless-suppression 2022-03-11 13:37:08 -05:00
version.py.in Manually reformat ipapython/version.py.in 2020-05-05 10:42:46 +02:00

README 

This is a set of libraries common to IPA clients and servers though mostly
geared currently towards command-line tools.

A brief overview:

config.py - identify the IPA server domain and realm. It uses python-dns to
            try to detect this information first and will fall back to
            /etc/ipa/default.conf if that fails.

ipautil.py - helper functions

entity.py - entity is the main data type. User and Group extend this class
            (but don't add anything currently).

ipavalidate.py - basic data validation routines