FreeIPA's Python and C code used different approaches to get the FQDN of
the host. Some places assumed that gethostname() returns a FQDN. Other
code paths used glibc's resolver to resolve the current node name to a
FQDN.
Python code now uses the ipalib.constants.FQDN where a fully qualified
domain name is expected. The variable is initialized only once and avoids
potential DNS lookups.
C code uses a new helper function ipa_gethostfqdn() in util package. The
function implements similar logic as gethostfqdn() except it uses more
modern getaddrinfo(). The result is cached as well.
Fixes: https://pagure.io/freeipa/issue/8501
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Fraser Tweedale <ftweedal@redhat.com>
`dnspython` 2.0.0 has many changes and several deprecations like:
```
> dns.resolver.resolve() has been added, allowing control of whether
search lists are used. dns.resolver.query() is retained for backwards
compatibility, but deprecated. The default for search list behavior can
be set at in the resolver object with the use_search_by_default
parameter. The default is False.
> dns.resolver.resolve_address() has been added, allowing easy
address-to-name lookups.
```
The new class `DNSResolver`:
- provides the compatibility layer
- defaults the previous behavior (the search list configured in the
system's resolver configuration is used for relative names)
- defaults lifetime to 15sec (determines the number of seconds
to spend trying to get an answer to the question)
Fixes: https://pagure.io/freeipa/issue/8383
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
New Pylint (2.4.3) catches several new 'true problems'. At the same
time, it warns about things that are massively and reasonably
employed in FreeIPA.
list of fixed:
- no-else-continue
- redeclared-assigned-name
- no-else-break
- unnecessary-comprehension
- using-constant-test (false positive)
list of ignored (responsibility of contributors and reviewers):
- import-outside-toplevel
Fixes: https://pagure.io/freeipa/issue/8102
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Fraser Tweedale <ftweedal@redhat.com>
For debugging and testing make it possible to run a simple domain
discovery from the command line
```
$ python3 -m ipaclient.discovery demo1.freeipa.org
realm DEMO1.FREEIPA.ORG (Discovered from LDAP DNS records in ipa.demo1.freeipa.org)
domain demo1.freeipa.org (Discovered LDAP SRV records from demo1.freeipa.org)
basedn dc=demo1,dc=freeipa,dc=org (From IPA server ldap://ipa.demo1.freeipa.org:389)
server ipa.demo1.freeipa.org (Discovered from LDAP DNS records in ipa.demo1.freeipa.org)
servers ['ipa.demo1.freeipa.org']
Success
$ python3 -m ipaclient.discovery freeipa.org
realm None
domain None
basedn None
server None
servers []
NO_LDAP_SERVER
```
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
ipaclient.discover.IPADiscovery skips LDAP discovery when python-ldap is
not present.
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Since commit 905ab93, ipa-server-install refuses single-label domains,
but older IPA server versions could be installed with a single-label
domain/realm.
ipa-client-install is already refusing single-label domain/realm when
provided to the CLI with --domain / --realm but does not perform the same
check when the domain is discovered.
This commit adds a check to domain names automatically discovered and skips
single-label domains. Same check for realm names.
Fixes: https://pagure.io/freeipa/issue/7598
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
Since the moved code is detected as new/modified code, make fastlint is
complaining about PEP 8 violations.
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
The ipaclient PyPI package does not ship the ipaclient.install
subpackage. The ipaclient.install.ipadiscovery module with IPADiscovery
is now available as ipaclient.discovery, so it can be used by consumers
of PyPI packages.
The module ipaclient.install.ipadiscovery provides a backwards
compatibility shim with deprecation warning.
Fixes: https://pagure.io/freeipa/issue/7861
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
