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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors. You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
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have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
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To protect your rights, we need to prevent others from denying you
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For example, if you distribute copies of such a program, whether
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work thus licensed is called the contributor's "contributor version".
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and the Corresponding Source of the work is not available for anyone
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available, or (2) arrange to deprive yourself of the benefit of the
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consistent with the requirements of this License, to extend the patent
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in a country, would infringe one or more identifiable patents in that
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conditioned on the non-exercise of one or more of the rights that are
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work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
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parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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FreeIPA Scripts
===============
This repository contains a small collection of scripts written to migrate my
existing LDAP/DNS setup (MacOS Server) to [FreeIPA](https://www.freeipa.org)
and manage my setup afterwards. These scripts provide functionality unavailable
in the FreeIPA command line tools. They use the FreeIPA API as much as possible
as I didn't like the provided alternatives for migration to directly update the
FreeIPA LDAP database. Most of these script / commands are meant to synchronize
between an existing situation and FreeIPA and are safe to run multiple times.
As side-effect, this also makes them suitable to support a gradual migration
over time (where a source system is still in production until final cut-over)
The latest versions, documentation and a bug tracker are available on my
[GitLab instance](https://gitlab.lindenaar.net/scripts/freeipa)
Copyright (c) 2018 Frederik Lindenaar. free for distribution under the GNU
General Public License, see [below](#license)
Contents
========
This repository contains the following scripts:
* [users2freeipa.py](#users2freeipa)
is a migration script to transfer/synchronize LDAP users to/with FreeIPA
* [freeipa-dns.py](#freeipadns)
is a script providing functionality not available in FreeIPA itself to
migrate/synchronize and maintain DNS zones in FreeIPA
<a name=users2freeipa>users2freeipa.py</a>
---------------------------------------------
This script uses LDAP to obtain users from a MacOS Server (or other LDAP)
server and synchronizes the results with the users registered in FreeIPA.
Since it synchronizes data it is safe to run multiple times and users can be
imported also as stage users initially.
The intent is to migrate user data and to not drag on a legacy setup. For
this reason, the script will create new user and group IDs and not copy homedir
and shell information by default. For the IDs, the legacy information can be
stored in an FreeIPA ID View so it remains available, other items can be copied
over using command line options. Passwords can be copied-over (if available in
a usable format), and the script also supports having FreeIPA generate random
passwords and store these in a file for further processing/sharing with users.
Users can be copied from an existing (generic) LDAP database and a MacOS Server
OpenDirectory-flavor LDAP server. In this case, additional information (e.g.
Apple's generatedUID) will be copied over as well. Please note that this does
require customizing the FreeIPA LDAP schema, which the script will check for
and can install (option ```-U```). As the setup is modular it should be easy
to tweak or add other migrations.
By default all users will be migrated/synchronized, but it is also possible to
limit this to specific user(s) or group(s) or specifically exclude specific
users or groups. An example to copy all users in the group ```workgroup```
except ```admin``` from an Apple MacOS OpenDirectory server:
~~~
./users2freeipa.py -v -O -U -c "Legacy LDAP" -g workgroup -x admin -G \
-P -p passwords.txt ldap://ldap.mydomain.tld
~~~
This will also install the OpenDirectory-specific schema customization, create
groups and copy group memberships, copy usuable passwords and ensure that all
users have a password (storing generated passwords to ```passwords.txt```)
Before running a production user migration, it is important to have FreeIPA
setup and configured correctly so that the right defaults are used for new
users. Best is to start with a single user and add that as a stage user (please
note that this will not yet assign userIDs, group memberships and a password
as FreeIPA does not yet support that) and use an ID View to store legacy data.
For all available command-line options, run ```users2freeipa.py -h```
<a name=freeipadns>freeipa-dns.py</a>
----------------------------------------------------------------
This script provides functionality not provided by FreeIPA to migrate and/or
synchronize / maintain DNS data in FreeIPA. Currently the following commands
are implemented:
* axfr - import/synchronize a DNS zone in FreeIPA using a zone-xfer.
for example, to migrate / synchronize fromain ```domain.tld``` from DNS
server ```192.168.1.53``` without checking DNS overlap, issue the command:
~~~
./freeipa-dns.py -v axfr -T 172.1.2.53 -n -f none 192.168.1.53 domain.tld
~~~
in addition, this will ensure zone-xfers are allowed from ```172.1.2.53```
and disable forwarding in FreeIPA.
* copy - copy a DNS record in FreeIPA within or between zones
for example, to copy ```A``` and ```AAAA``` from host ```wwww.domain.tld```
to the domain ```domain.tld``` itself, issue the command:
~~~
./freeipa-dns.py -v copy -l A AAAA wwww.domain.tld -T domain.tld
~~~
* move - move a DNS record in FreeIPA from one one to another
for example, to move ```host1.int``` in zone ```domain.tld``` to ```host```
in zone ```int.domain.tld``` issue the command:
~~~
./freeipa-dns.py -v move -z domain.tld host.int host.int.domain.tld
~~~
* serial - update (set) zone serial(s) in FreeIPA, supporting both RFC1912
style serials (YYYYMMDD##) based on current date and setting the serial to
a specific value. To set the serial of a zone to revision 2 of today for
zones ```zone1.mydomain.tld``` and ```zone2.mydomain.tld```, run:
~~~~
./freeipa-dns.py -v serial -t 2 zone1.mydomain.tld zone2.mydomain.tld
~~~~
by default this command will set the serial to a larger value (which can be
overridden with the ```-f```/```--force``` flag)
* generate - generate number-range DNS records/attributes in FreeIPA
This is meant to generate series of hosts or attributes, for example, to
generate hosts ```dhcp-01``` to ```dhcp-10``` in zone ```int.mydomain.tld```
with ip addresses starting from ```192.168.2.100``` issue to command:
~~~
./freeipa-dns.py -v generate int.mydomain.tld dhcp-%02d -4 192.168.2.100 \
--auto-increment-a -n 5
~~~
it can also be used to generate a farm of web servers in different subnets
with the command:
~~~
./freeipa-dns.py -v generate int.mydomain.tld www -4 192.168.%d.80 -n 5
~~~
* reverse-ptr - create/update reverse DNS (PTR) entries in FreeIPA
With this command reverse-zones can be automatically maintained. it scans
the zones in FreeIPA for ```A``` and ```AAAA``` records and creates the
corresponding records in the ```in-addr.arpa``` and ```ip6.arpa``` zones.
The reverse zones must exist, and can also be created with this command by:
~~~
./freeipa-dns.py -v reverse-ptr -n -p -c 10. 10.100 192.168 2001:0db8:85a3
~~~
which will create the reverse zones for prefixes 10.* 10.100.* 192.168.*
and ipv6 prefix 2001:0db8:85a3. Reverse (PTR) records will automatically be
created in the correct zone with the following command:
~~~
./freeipa-dns.py -v reverse-ptr -a
~~~
by default, the command will not overwrite existing records, (which can be
overridden with the ```-o```/```--override``` flag). To force a PTR record
to point to a specific host, e.g. ```www.mydomain.tld``` run the command:
~~~
./freeipa-dns.py -v reverse-ptr -o -z mydomain.tld -H www
~~~
for available commands run ```freeipa-dns.py -h``` and to get an overview of
the available options for each commmand run ```freeipa-dns.py <command> -h```
<a name="license">License</a>
-----------------------------
These scripts, documentation & configration examples are free software: you can
redistribute and/or modify it under the terms of the GNU General Public License
as published by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
This script, documenatation and configuration examples are distributed in the
hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, download it from <http://www.gnu.org/licenses/>.

597
freeipa-dns.py Executable file
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#! /usr/bin/env python3
#
# freeipa-dns.py - python script to migrate and maintain DNS domains in FreeIPA
#
# Version 1.0, latest version, documentation and bugtracker available at:
# https://gitlab.lindenaar.net/scripts/freeipa
#
# Copyright (c) 2018 Frederik Lindenaar
#
# This script is free software,you can redistribute and/or modify it under the
# terms of version 3 of the GNU General Public License as published by the Free
# Software Foundation, or (at your option) any later version of the license.
#
# This script is distributed in the hope that it will be useful but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, visit <http://www.gnu.org/licenses/> to download it.
"""
migrate/synchronize and maintain DNS domain(s) with FreeIPA.
This script provides functionality not provided by FreeIPA to migrate and/or
synchronize / maintain DNS data in FreeIPA. Currently the following commands
are implemented:
axfr import/synchronize a DNS zone in FreeIPA using a zone-xfer
copy copy a DNS record in FreeIPA within or between zones
move move a DNS record in FreeIPA from one one to another
serial update (set) zone serial(s) in FreeIPA
generate generate number-range DNS records/attributes in FreeIPA
reverse-ptr create/update reverse DNS (PTR) entries in FreeIPA
for available commands run 'freeipa-dns.py -h and to get an overview of
the available options for each commmand run 'freeipa-dns.py <command> -h'
"""
import os, logging
from datetime import date
from argparse import ArgumentParser, FileType, \
_StoreAction as StoreAction, _StoreConstAction as StoreConstAction
import dns.query
import dns.zone
from dns.rdatatype import SOA, HINFO
from dns.exception import DNSException
from ipalib import api
from ipalib.errors import PublicError, AuthenticationError, NotFound
VERSION="1.0"
PROG_NAME=os.path.splitext(os.path.basename(__file__))[0]
PROG_VERSION=PROG_NAME + ' ' + VERSION
LOG_FORMAT='%(levelname)s - %(message)s'
LOG_FORMAT_FILE='%(asctime)s - ' + LOG_FORMAT
logger = logging.getLogger(PROG_NAME)
##################[ Action to immediately set the log level ]##################
class SetLogLevel(StoreConstAction):
"""ArgumentParser action to set log level to provided const value"""
def __call__(self, parser, namespace, values, option_string=None):
logging.getLogger(PROG_NAME).setLevel(self.const)
####################[ Action to immediately log to a file ]####################
class SetLogFile(StoreAction):
"""ArgumentParser action to log to file (sets up FileHandler accordingly)"""
def __call__(self, parser, namespace, values, option_string=None):
super(SetLogFile, self).__call__(parser,namespace,values,option_string)
formatter = logging.Formatter(LOG_FORMAT_FILE)
handler = logging.FileHandler(values)
handler.setFormatter(formatter)
logger = logging.getLogger(PROG_NAME)
logger.propagate = False
logger.addHandler(handler)
def get_zone_opts(args):
return {
'dnsttl': None if args.ttl is None else str(args.ttl),
'dnsdefaultttl': None if args.default_ttl is None else str(args.default_ttl),
'idnsforwardpolicy':args.forward_policy,
'idnsforwarders': args.forwarder,
'idnsallowquery': ';'.join(args.allow_query)+';' if args.allow_query else None,
'idnsallowtransfer':';'.join(args.allow_transfer)+';' if args.allow_transfer else None,
'idnsallowsyncptr': args.create_reverse_ptr,
}, {
'skip_nameserver_check':args.no_ns_check,
'skip_overlap_check': args.no_ns_check,
}, {
'force': args.no_ns_check,
}
############################[ AXFR implementation ]############################
def process_zone(api, dnszone, args):
"""Process a single DNS Zone and synchronize with FreeIPA using its API"""
domain = args.merge_zone if args.merge_zone else str(dnszone.origin)
logger.info('processing DNS domain %s to %s', str(dnszone.origin), domain)
soa_data = dnszone.get_rdataset(dnszone.origin, SOA)[0]
zone_opts, add_opts, mod_opts = get_zone_opts(args)
try:
ipa_data = api.Command.dnszone_show(domain, all=True)['result']
updates = { key: str(soa_value) for key, ipa_value in (
(k, v[0]) for k,v in ipa_data.items() if k.startswith('idnssoa')
) for soa_value in ( getattr(soa_data, key[7:]), )
if ( int(soa_value) > int(ipa_value) if key == 'idnssoaserial'
else str(soa_value) != str(ipa_value) )
}
updates.update((key, value) for key,value in zone_opts.items()
if value is not None and not (key in ipa_data and
value in ipa_data[key] if isinstance(value, str)
else set(value).issubset(ipa_data.get(key))))
if updates:
logger.info('updating existing domain %s in FreeIPA', domain)
logger.debug('updating domain %s with %s', domain, updates)
api.Command.dnszone_mod(domain, **mod_opts, **updates)
else:
logger.debug('no updates for existing domain %s in FreeIPA', domain)
except NotFound:
logger.info('creating new domain %s in FreeIPA', domain)
response = api.Command.dnszone_add(domain, **zone_opts, **add_opts, **{
'idnssoa'+key: str(getattr(soa_data, key)) for key in [
'mname','rname','serial','refresh','retry','expire','minimum']})
print(response)
api.Command.dnsrecord_del(domain, '@',
nsrecord=response['result']['nsrecord'])
recordname = lambda x: dns.rdatatype.to_text(x.rdtype).lower()+'record'
optionchecks = tuple((key, datafield) for key, argopt, datafield in (
('force', 'no_ns_check', 'nsrecord'),
('a_extra_create_reverse', 'create_reverse_ptr', 'arecord'),
('aaaa_extra_create_reverse', 'create_reverse_ptr', 'aaaarecord')
) if getattr(args, argopt) )
options = lambda data: { k: True for k, f in optionchecks if f in data }
for rname, rdataset in dnszone.items():
name = str(rname)
dns_data = { recordname(rdatas[0]): tuple(map(str, rdatas))
for rdatas in rdataset.rdatasets
if rdatas[0].rdtype not in (SOA, HINFO) }
try:
ipa_data = api.Command.dnsrecord_show(domain, name)['result']
dns_data={ key: value for key, value in dns_data.items() if not (
key in ipa_data and set(value).issubset(ipa_data[key]))}
if dns_data:
logger.info('updating %s in domain %s in FreeIPA', name, domain)
except NotFound:
logger.info('adding %s to domain %s in FreeIPA', name, domain)
finally:
if dns_data:
dns_data.update(options(dns_data))
logger.debug(dns_data)
api.Command.dnsrecord_add(domain, name, **dns_data)
else:
logger.debug('no updates for entry %s', name)
def axfr(api, args):
for domain in args.dnszone:
logger.info('performing zone-xfer for domain %s', domain)
axfr_request = dns.query.xfr(args.dnsserver, domain,
source=args.source_address, relativize=args.relativize)
dnszone = dns.zone.from_xfr(axfr_request, relativize=args.relativize)
process_zone(api, dnszone, args)
############################[ COPY implementation ]############################
def copy(api, args, remove=False):
"""Copy a DNS Record in FreeIPA and optionally remove the source values"""
src_record, src_zone = ('@', args.source_record) if args.source_zone else \
(args.source_record, args.source_zone_name) if args.source_zone_name else \
args.source_record.split('.', 1)
dst_record, dst_zone = ('@', args.target_record) if args.target_zone else \
(args.target_record, args.target_zone_name) if args.target_zone_name else \
args.target_record.split('.', 1)
logger.debug('%s %s in %s to %s in %s', 'Moving' if remove else 'Copying',
src_record, src_zone, dst_record, dst_zone)
src_data = { key:value for key,value in
api.Command.dnsrecord_show(src_zone, src_record)['result'].items()
if key.endswith('record') and
(not args.limit_records or key[:-6].upper() in args.limit_records) }
logger.debug("obtained source data from %s in domain %s,%s", src_record, src_zone, src_data)
try:
dst_data = api.Command.dnsrecord_show(dst_zone, dst_record)['result']
if not args.merge:
logger.error("Destination record %s already exists in zone %s", dst_record, dst_zone)
exit(1)
updates = { key: value for key, value in src_data.items()
if not (key in dst_data and set(value).issubset(dst_data[key]))
}
if updates:
logger.info('updating %s in domain %s in FreeIPA', dst_record, dst_zone)
except NotFound:
logger.info('creating %s in domain %s in FreeIPA', dst_record, dst_zone)
updates = src_data
if updates:
logger.debug(updates)
api.Command.dnsrecord_add(dst_zone, dst_record, **updates)['result']
else:
logger.debug('no updates for entry %s in domain %s', dst_record, dst_zone)
if remove and src_data:
if not args.limit_records:
logger.info('removing %s from domain %s in FreeIPA', src_record, src_zone)
api.Command.dnsrecord_delentry(src_zone, (src_record,))
else:
logger.info('removing attributes %s from %s in domain %s in FreeIPA',
args.limit_records, src_record, src_zone)
api.Command.dnsrecord_del(src_zone, src_record, **src_data)
############################[ MOVE implementation ]############################
def move(api, args):
"""Move a DNS Record from one DNS zone in FreeIPA to another or rename it"""
copy(api, args, True)
###########################[ SERIAL implementation ]###########################
def serial(api, args, date=date.today()):
"""Set the SOA serial number of a DNS zone to specified or RFC1912 value"""
serial = int(args.serial if args.serial else '%04d%02d%02d%02d'%(date.year,
0 if args.year_revision is not False else date.month,
0 if args.today_revision is False else date.day,
args.year_revision if args.year_revision else
args.month_revision if args.month_revision else
args.today_revision if args.today_revision else 0))
for domain in args.dnszone:
ipa_serial = int(
api.Command.dnszone_show(domain)['result']['idnssoaserial'][0])
if ipa_serial > serial and not (args.force or args.ignore_greater):
logger.error('current serial %s of %s is greater than target (%s)',
ipa_serial, domain, serial)
exit(1)
elif serial > ipa_serial or (args.force and serial != ipa_serial):
logger.info('updating serial of %s to %s', domain, serial)
api.Command.dnszone_mod(domain, idnssoaserial=serial)
##########################[ GENERATE implementation ]##########################
def generate(api, args):
"""Generate DNS records / set DNS attributes based on a number range """
records = { key: value for key in dir(args) if key.endswith('record')
for value in (getattr(args, key),) if value is not None }
dynamic = [k for k, v in records.items() if any(map(lambda x: '%' in x, v))]
autoincrement = { key: {'sep':':', 'maxvalue':65535, 'base':16, 'fmt':'%x'}
if key == 'aaaarecord' else {} for key in records.keys()
if getattr(args, 'auto_increment_'+key[:-6]) }
def increment(value, sep='.', maxvalue=255, base=10, fmt='%d'):
rest, _, value = value.rpartition(sep)
value = 1 if value == '' or value == 'None' else int(value, base) + 1
return rest + sep + fmt % value if value < maxvalue else \
increment(rest, sep, maxvalue, base, fmt) + sep + 1
for number in range(args.start, args.end+1 if args.end else args.start+args.number):
name = args.template % number if '%' in args.template else args.template
if number > args.start:
for key, params in autoincrement.items():
records[key] = list(map(lambda x: x if '%' in x else \
increment(x, **params), records[key]))
dst_data = records.copy()
for key in dynamic:
dst_data[key] = list(map(lambda x: x%number if '%' in x else x, records[key]))
try:
ipa_data = api.Command.dnsrecord_show(args.dnszone, name)['result']
updates = { key: value for key, value in dst_data.items()
if not (key in ipa_data and set(value).issubset(ipa_data[key]))}
if updates:
logger.info('updating %s in domain %s in FreeIPA', name, args.dnszone)
logger.debug(updates)
api.Command.dnsrecord_mod(args.dnszone, name, **updates)
else:
logger.debug('no updates for entry %s in domain %s', name, args.dnszone)
except NotFound:
logger.info('creating %s in domain %s in FreeIPA', name, args.dnszone)
logger.debug(updates)
api.Command.dnsrecord_add(args.dnszone, name, **dst_data)
#########################[ REVERSEPTR implementation ]#########################
def reverseptr(api, args):
rev_zones, ipv4_rev_zones, ipv6_rev_zones = {}, {}, {}
logger.info('Fetching existing reverse PTR domains')
for revzone in (zone for d in
api.Command.dnszone_find('.arpa.',pkey_only=True)['result']
for zone in map(str, d['idnsname']) if zone.endswith('.arpa.')):
prefix, _, type = revzone[:-6].rpartition('.')
if type == 'ip6':
if not args.ipv6:
continue
reverse = lambda v: ''.join(reversed(v.replace('.','')))
prefix = reverse(prefix)
ipv6_rev_zones[prefix] = revzone
else:
if not args.ipv4:
continue
reverse = lambda v: '.'.join(reversed(v.split('.')))
prefix = reverse(prefix) + '.'
ipv4_rev_zones[prefix] = revzone
if args.dnszone or args.all_zones:
logger.debug('Loading reverse PTR domain %s for %s*',revzone,prefix)
rev_zones[prefix] = { prefix+reverse(str(ptr)): host
for d in api.Command.dnsrecord_find(revzone)['result']
for ptr in d['idnsname'] for host in d.get('ptrrecord', ())}
else:
rev_zones[prefix] = {}
for revprefix in args.create_revprefix:
try:
if ':' in revprefix and args.ipv6:
revtype = 'ipv6 '
revprefix = revprefix.strip(': \t\r\n')
revprefix = ''.join([ '%04x' % int(w,16)
for w in revprefix.split(':',7) ])
ipv6_rev_zones[revprefix] = revzone = \
'.'.join(reversed(revprefix)) + '.ip6.arpa.'
elif '.' in revprefix and args.ipv4:
revtype = 'ipv4 '
revprefix = revprefix.strip('. \t\r\n')
if revprefix.count('.') > 3 or any(map(lambda x: x<0 or x>255,
map(int, revprefix.split('.')))):
raise ValueError('not a valid IPv4 value')
revzone = '.'.join(reversed(revprefix.split('.'))) + '.in-addr.arpa.'
revprefix += '.'
ipv4_rev_zones[revprefix] = revzone
else:
revtype = ''
raise ValueError('unsupported reverse zone prefix')
except ValueError as e:
logger.critical('Error: %sreverse zone prefix %s is not valid: %s',
revtype, revprefix, e)
exit(1)
else:
if revprefix in rev_zones:
logger.debug('%sreverse zone %s exists', revtype, revprefix)
else:
logger.info('Creating %sreverse zone %s for %s*',
revtype, revzone, revprefix)
zone_opts, add_opts, _ = get_zone_opts(args)
api.Command.dnszone_add(revzone, **zone_opts, **add_opts)
rev_zones[revprefix] = {}
revattrs = [ ('arecord', ipv4_rev_zones, sorted(ipv4_rev_zones), str,
lambda t,v: '.'.join(reversed(v[len(t):].split('.')))) ] if args.ipv4 else []
if args.ipv6:
revattrs.append( ('aaaarecord', ipv6_rev_zones, sorted(ipv6_rev_zones),
lambda v: ''.join([ '0000' * (8-v.count(':')) if w == ''
else '%04x' % int(w, 16) for w in v.split(':') ]),
lambda t,v: '.'.join(reversed(v[len(t):]))) )
excluded_zones = map(lambda x: x.strip(':.\t\r\n')+'.', args.exclude_zone)
for zone in (z for z in ((n for d in
api.Command.dnszone_find(pkey_only=True, idnszoneactive=True)['result']
for n in map(str, d['idnsname'])) if args.all_zones
else map(lambda x: x.strip(':.\t\r\n')+'.', args.dnszone))
if not (z.endswith('in-addr.arpa.') or z.endswith('ip6.arpa.')
or z in excluded_zones)):
logger.info('Processing DNS zone %s', zone)
for record in ( api.Command.dnsrecord_show(zone, host)['result']
for host in args.host) if args.host \
else api.Command.dnsrecord_find(zone)['result']:
recordname = str(record['idnsname'][0])
recordname = zone if recordname=='@' else '%s.%s'%(recordname,zone)
for revattr,revzones,revzonelist,revconvert,revformat in revattrs:
for ipaddr in record.get(revattr, ()):
revaddr = revconvert(ipaddr)
try:
*oldrevs, revtarget = [ rz for rz in revzonelist
if revaddr.startswith(rz) ]
except ValueError:
logger.debug('Skipping %s (%s): no reverse DNS zone',
ipaddr, recordname)
else:
reventry = revformat(revtarget, revaddr)
revzone = revzones[revtarget]
currrev = rev_zones[revtarget].get(revaddr)
if currrev == recordname:
logger.debug('no update for %s (%s) in %s',
reventry, recordname, revzone)
elif currrev and not args.overwrite:
logger.warn('not updating %s (%s) in %s pointing to'
' %s', reventry, recordname, revzone, currrev)
else:
action = 'modifying' if currrev else 'adding'
logger.info('%s %s (%s) to %s', action, reventry,
recordname, revzone)
getattr(api.Command, 'dnsrecord_%s' % action[:3])(
revzone, reventry, ptrrecord=recordname)
rev_zones[revtarget][revaddr] = recordname
for revzone, reventry, oldentry in ( (revzones[r],
revformat(r, revaddr), o) for r in oldrevs
for o in (rev_zones[r].get(revaddr),) if o):
logger.info('removing %s (%s) from %s', reventry,
oldentry, revzone)
api.Command.dnsrecord_delentry(revzone, reventry)
##########################[ Command-line processing ]##########################
def parse_args():
"""Parse command line and get parameters from environment if not set"""
record_types = (
('A', '4', 'IPv4 address'),
('AAAA', '6', 'IPv6 address'),
('CNAME', 'c', 'canonical name (alias)'),
('MX', 'm', 'Mail Exchange (priority + server)'),
('NS', 'N', 'Nameserver name'),
('PTR', 'p', 'Reverse address Pointer'),
('SRV', 'V', 'Service record (priority+port+server)'),
('TXT', 't', 'Text record'),
('SSHFP', 'H', 'SSH Fingerprint (priority+type+fingerprint)'),
)
parser = ArgumentParser(
description='Migrate or synchronize a DNS zone in FreeIPA with DNS',
)
parser.add_argument('-V', '--version',action="version",version=PROG_VERSION)
pgroup = parser.add_mutually_exclusive_group(required=False)
pgroup.add_argument('-q', '--quiet', action=SetLogLevel, const=logging.CRITICAL,
default=logging.CRITICAL, help='quiet (only fatal errors)')
pgroup.add_argument('-v', '--verbose', action=SetLogLevel, const=logging.INFO,
help='more verbose output')
pgroup.add_argument('-d', '--debug', action=SetLogLevel, const=logging.DEBUG,
help='debug output')
parser.add_argument('-l', '--logfile', action=SetLogFile,
help='send logging output to logfile')
zoneoptionsparser = ArgumentParser(add_help=False)
zoneoptionsparser.add_argument('-n', '--no-ns-check', action='store_true',
help='force zone/record creation in case NS not in DNS')
zoneoptionsparser.add_argument('-p', '--create-reverse-ptr', action='store_true',
help='Enable updating reverse records for created zone(s)')
zoneoptionsparser.add_argument('-f','--forward-policy',choices=('first','only','none'),
default='first', help='Set forward policy for created zone(s)')
zoneoptionsparser.add_argument('-F', '--forwarder', nargs="+",
help='Set IP addresses to forward queries for created zone(s)')
zoneoptionsparser.add_argument('-Q', '--allow-query', nargs="+", default=(),
help='Set IP addresses/ranges that can query created zone(s)')
zoneoptionsparser.add_argument('-T', '--allow-transfer', nargs="+", default=(),
help='Set IP addresses/ranges that can transfer created zone(s)')
zoneoptionsparser.add_argument('-t', '--ttl', type=int,
help='Set TTL for SOA record of created zone(s)')
zoneoptionsparser.add_argument('-D', '--default-ttl', type=int,
help='Set default TTL for records in created zone(s)')
subparser = parser.add_subparsers(title='Available commands', dest='command')
subparser.required=True
cmdparser = subparser.add_parser('axfr', parents=[zoneoptionsparser],
help='import or synchronize an DNS zone in FreeIPA with the '
'result of a zone-xfer',
description='Migrate or synchronize a DNS zone in FreeIPA with '
'an external DNS server. Since it synchronizes data it is '
'safe to run multiple times for a domain.',
epilog='Please note that this uses a domain-xfer to fetch DNS '
'zone(s) so the DNS server must allow a Zone Transfer '
'for the domain from the host running the script for '
'this command to work')
cmdparser.set_defaults(func=axfr, cmdparser=cmdparser)
cmdparser.add_argument('-s', '--source-address',
help='perform the zone-xfr from specified address')
pgroup = cmdparser.add_mutually_exclusive_group(required=False)
pgroup.add_argument('-r', '--relativize', action='store_true', default=True,
help='store DNS records relative to zone origin')
pgroup.add_argument('-a','--absolute',action='store_false',dest='relativize',
help='store DNS records with absolute DNS domain')
cmdparser.add_argument('-m', '--merge-zone',
help='merge DNSZONE(s) into MERGE_ZONE')
cmdparser.add_argument('dnsserver', help='DNS Server to request the zone from')
cmdparser.add_argument('dnszone', nargs='+', help='DNS Zone to synchronize')
commonparser = ArgumentParser(add_help=False)
commonparser.add_argument('-m', '--merge', action='store_true',
help='merge SRC_RECORD into DST_RECORD (default is '
'to fail when DST_RECORD exists)')
commonparser.add_argument('-l', '--limit-records', nargs='+',
choices=list(map(lambda x:x[0], record_types)),
help='only move specified record types (default is to move all)')
pgroup = commonparser.add_mutually_exclusive_group(required=False)
pgroup.add_argument('-z', '--source-zone-name',
help='DNS zone to move SRC_RECORD from (will use SRC_RECORD if not provided)')
pgroup.add_argument('-Z', '--source-zone', action='store_true',
help='move attributes from DNS zone SRC_RECORD itself')
pgroup = commonparser.add_mutually_exclusive_group(required=False)
pgroup.add_argument('-t', '--target-zone-name',
help='new name for SRC_RECORD in DST_RECORD')
pgroup.add_argument('-T', '--target-zone', action='store_true',
help='move attributes from to DNS zone SRC_RECORD itself')
commonparser.add_argument('source_record', help='source record(s) to move')
commonparser.add_argument('target_record', help='DNS Zone to move records to')
cmdparser = subparser.add_parser('copy',parents=[commonparser],
help='Copy a DNS record in FreeIPA within or between zones')
cmdparser.set_defaults(func=copy, cmdparser=cmdparser)
cmdparser = subparser.add_parser('move',parents=[commonparser],
help='Move a DNS record in FreeIPA from one one to another')
cmdparser.set_defaults(func=move, cmdparser=cmdparser)
cmdparser = subparser.add_parser('serial',
help='update (set) zone serial(s) in FreeIPA')
cmdparser.set_defaults(func=serial, cmdparser=cmdparser)
pgroup = cmdparser.add_mutually_exclusive_group(required=False)
pgroup.add_argument('-f', '--force', action='store_true',
help='force setting the SOA serial, even when smaller '
'(default is to only update to larger value)')
pgroup.add_argument('-i', '--ignore-greater', action='store_true',
help='silently ignore exisging larger SOA serials '
'(default is to abort if existing serial is larger)')
pgroup = cmdparser.add_mutually_exclusive_group(required=True)
generate_RFC1912 = 'generate RFC1912-format serial based on %s'
pgroup.add_argument('-y', '--current-year', type=int,
dest='year_revision', nargs='?', default=False,
help=generate_RFC1912 % 'current year (YYYY######)')
pgroup.add_argument('-m', '--current-month', type=int,
dest='month_revision', nargs='?', default=False,
help=generate_RFC1912 % 'current year & month (YYYYMM####)')
pgroup.add_argument('-t', '--today', type=int,
dest='today_revision', nargs='?', default=False,
help=generate_RFC1912 % 'current date (YYYYMMDD##)')
pgroup.add_argument('-s', '--serial', type=int,
help='serial value to use (must be a 32-bit integer)')
cmdparser.add_argument('dnszone', nargs='+',
help='DNS Zone to update serial for')
cmdparser = subparser.add_parser('generate',
help='generate number-range DNS records/attributes in FreeIPA',
epilog='(*) %s/%d will be replaced with the sequence numnber, specify'
' #leading zeros like with printf, i.e. %02d = 2 leading zeros')
cmdparser.set_defaults(func=generate, cmdparser=cmdparser)
cmdparser.add_argument('-s', '--start', type=int, default=1,
help='start (first) value of the numner range to generate, defaults to 1')
pgroup = cmdparser.add_mutually_exclusive_group(required=True)
pgroup.add_argument('-e', '--end', type=int,
help='end (last) value of the numner range to generate')
pgroup.add_argument('-n', '--number', type=int,
help='number of entries to generate')
for record, option, description in record_types:
cmdparser.add_argument('-'+option, '--'+record.lower()+'record',
nargs='+', help='set %s for record (*)' % description)
if option in ('4', '6'):
cmdparser.add_argument('--auto-increment-'+record.lower(),
action='store_true', help='Automatically increment %s values without a pattern' % description)
cmdparser.add_argument('dnszone', help='DNS Zone to generate records in')
cmdparser.add_argument('template', help='template for the name of the generated records (*)')
cmdparser = subparser.add_parser('reverse-ptr', parents=[zoneoptionsparser],
help='create/update reverse DNS (PTR) entries in FreeIPA',
description='Generate IPv4/IPv6 reverse PTR zones and records.')
cmdparser.set_defaults(func=reverseptr, cmdparser=cmdparser)
pgroup = cmdparser.add_mutually_exclusive_group(required=False)
pgroup.add_argument('-4', '--ipv4', action='store_false', dest='ipv6', default=True,
help='process only ipv4 addresses')
pgroup.add_argument('-6', '--ipv6', action='store_false', dest='ipv4', default=True,
help='process only ipv6 addresses')
cmdparser.add_argument('-o', '--override', action='store_true',
help='overwrite existing reverse PTR records (default is to only add new mappings)')
cmdparser.add_argument('-c', '--create_revprefix', nargs='+', default=(),
help='create reverse zone for IPv4/IPv6 prefix '
'(must contain either . or :, e.g. 10. 192.168 2001:0db8:85a3)')
pgroup = cmdparser.add_mutually_exclusive_group(required=False)
pgroup.add_argument('-a', '--all-zones', action='store_true',
help='process all enabled zones in FreeIPA')
pgroup.add_argument('-z', '--dnszone', nargs='+', default=(),
help='DNS zone(s) to generate reverse pointer records for')
cmdparser.add_argument('-H', '--host', nargs='+',
help='DNS host(s) to generate reverse pointer records for within each DNSZONE')
cmdparser.add_argument('-x', '--exclude-zone', nargs='+', default=(),
help='exclude specified zones')
return parser.parse_args()
###############################################################################
if __name__ == '__main__':
logging.basicConfig(format=LOG_FORMAT)
args = parse_args()
try:
logger.debug('connecting to FreeIPA')
if api.isdone('finalize') is False:
api.bootstrap_with_global_options(context='api')
api.finalize()
api.Backend.rpcclient.connect()
args.func(api, args)
exit(0)
except DNSException as e:
logger.critical("Domain %s cannot be downloaded,%s", domain, e)
except AuthenticationError:
logger.critical("Unable to authenticate to FreeIPA, make sure you have a valid Kerberos ticket!")
except PublicError as e:
logger.critical("error while communicating with FreeIPA: %s", e)
exit(1)

632
users2freeipa.py Executable file
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#! /usr/bin/env python3
#
# usersfreeipa.py - python script to migrate/synchronize LDAP users with FreeIPA
#
# Version 1.0, latest version, documentation and bugtracker available at:
# https://gitlab.lindenaar.net/scripts/freeipa
#
# Copyright (c) 2018 Frederik Lindenaar
#
# This script is free software: you can redistribute and/or modify it under the
# terms of version 3 of the GNU General Public License as published by the Free
# Software Foundation, or (at your option) any later version of the license.
#
# This script is distributed in the hope that it will be useful but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, visit <http://www.gnu.org/licenses/> to download it.
"""
migrate/synchronize LDAP users with FreeIPA.
This script uses LDAP to obtain users from a MacOS Server (or other LDAP)
server and synchronizes the results with the users registered in FreeIPA.
Since it synchronizes data it is safe to run multiple times.
for available command-line options, run 'users2freeipa.py -h'
"""
import os, logging
from argparse import ArgumentParser, FileType, \
_StoreAction as StoreAction, _StoreConstAction as StoreConstAction
from base64 import b64encode
from getpass import getpass
from ipalib import api
from ipalib.errors import PublicError, AuthenticationError, NotFound
from ldap import LDAPError, SCOPE_SUBTREE, MOD_ADD, MOD_DELETE
from ldap.filter import escape_filter_chars
from ldap.ldapobject import LDAPObject
from ldap.resiter import ResultProcessor
VERSION="1.0"
PROG_NAME=os.path.splitext(os.path.basename(__file__))[0]
PROG_VERSION=PROG_NAME + ' ' + VERSION
LOG_FORMAT='%(levelname)s - %(message)s'
LOG_FORMAT_FILE='%(asctime)s - ' + LOG_FORMAT
logger = logging.getLogger(PROG_NAME)
##################[ Action to immediately set the log level ]##################
class SetLogLevel(StoreConstAction):
"""ArgumentParser action to set log level to provided const value"""
def __call__(self, parser, namespace, values, option_string=None):
logging.getLogger(PROG_NAME).setLevel(self.const)
####################[ Action to immediately log to a file ]####################
class SetLogFile(StoreAction):
"""ArgumentParser action to log to file (sets up FileHandler accordingly)"""
def __call__(self, parser, namespace, values, option_string=None):
super(SetLogFile, self).__call__(parser,namespace,values,option_string)
formatter = logging.Formatter(LOG_FORMAT_FILE)
handler = logging.FileHandler(values)
handler.setFormatter(formatter)
logger = logging.getLogger(PROG_NAME)
logger.propagate = False
logger.addHandler(handler)
#################[ Generic LDAP Connection / ResultProcessor ]#################
class custom_attr(str): pass
class LDAPConnection(LDAPObject,ResultProcessor):
"""LDAPConnection implements the LDAP-specifics to migrate LDAP to FreeIPA
This class holds a generic implementation of the functionality needed to
migrate from a generic () LDAP server to FreeIPA. It is intended to be
subclassed to add the instance-specific parameters for implementation.
Parameters and LDAP attributes steering the migration to FreeIPA are in
the below attributes (to be overrided by implementation subclasses):
FreeIPA LDAP Schema customizations (used by check_schema)
SCHEMA_ATTRIBUTES: custom attribute mapping (oid:definiton)
SCHEMA_OBJECTCLASSES: custom objectclass mapping (oid:definiton)
LDAP search parameters:
USER_SUBTREE: LDAP users subtree (relative to baseDN)
USER_OBJECTCLASS: objectclasses for searching users
USER_LOGINATTR: user login / (unique) key attribute
USER_MAPPING: mapping for LDAP attributes to FreeIPA
(LDAP attr: (FreeIPA attr, convert_func))
GROUP_SUBTREE: LDAP groups subtree (relative to baseDN)
GROUP_OBJECTCLASS: objectclasses for searching group(member)s
GROUP_NAMEATTR: group name / (unique) key attribute
GROUP_DESCATTR: group description attribute
GROUP_GIDATTR: group gid attribute
GROUP_MEMBERATTR: group member attribute with member logins
"""
@staticmethod
def ldaplist2ipa(valuelist): return tuple(map(bytes.decode, valuelist))
@staticmethod
def ldapstr2ipa(valuelist, default=()):
return ' '.join(map(bytes.decode, valuelist if valuelist else default))
FREEIPA_SCHEMA_DN = 'cn=schema'
SCHEMA_ATTRIBUTES = { }
SCHEMA_OBJECTCLASSES = { }
USER_OBJECTCLASS = ( 'posixAccount', 'shadowAccount' )
USER_SUBTREE = 'cn=users'
USER_LOGINATTR = 'uid'
USER_MAPPING = { # based on http://www.zytrax.com/books/ldap/ape/
USER_LOGINATTR: (USER_LOGINATTR, ldaplist2ipa.__func__),
'userPassword': ('userpassword', ldapstr2ipa.__func__),
'uidNumber': ('uidnumber', ldapstr2ipa.__func__),
'gidNumber': ('gidnumber', ldapstr2ipa.__func__),
'gecos': ('gecos', ldapstr2ipa.__func__),
'homeDirectory': ('homedirectory', ldapstr2ipa.__func__),
'loginShell': ('loginshell', ldapstr2ipa.__func__),
'givenName': ('givenname', ldapstr2ipa.__func__),
'sn': ('sn', ldapstr2ipa.__func__),
'cn': ('cn', ldapstr2ipa.__func__),
'displayname': ('displayname', ldapstr2ipa.__func__),
'initials': ('initials', ldapstr2ipa.__func__),
'title': ('title', ldapstr2ipa.__func__),
'mail': ('mail', ldaplist2ipa.__func__),
'street': ('street', ldapstr2ipa.__func__),
'l': ('l', ldapstr2ipa.__func__),
'st': ('st', ldapstr2ipa.__func__),
'postalCode': ('postalcode', ldapstr2ipa.__func__),
'telephonenumber': ('telephonenumber', ldaplist2ipa.__func__),
'mobile': ('mobile', ldaplist2ipa.__func__),
'pager': ('pager', ldaplist2ipa.__func__),
'facsimiletelephonenumber':('facsimiletelephonenumber',ldaplist2ipa.__func__),
'carlicense': ('carlicense', ldaplist2ipa.__func__),
'ou': ('ou', ldapstr2ipa.__func__),
'departmentNumber': ('departmentnumber',ldaplist2ipa.__func__),
'employeeNumber ': ('employeenumber', ldapstr2ipa.__func__),
'employeeType': ('employeetype', ldapstr2ipa.__func__),
'manager': ('manager', ldapstr2ipa.__func__),
'userCertificate': ('usercertificate', ldaplist2ipa.__func__),
'preferredLanguage':('preferredlanguage',ldapstr2ipa.__func__),
}
GROUP_OBJECTCLASS = ( 'posixGroup', )
GROUP_SUBTREE = 'cn=groups'
GROUP_NAMEATTR = 'cn'
GROUP_DESCATTR = GROUP_NAMEATTR
GROUP_GIDATTR = 'gidNumber'
GROUP_MEMBERATTR = 'memberUid'
@staticmethod
def attrfilters(valuelist, attr, cmp='='):
"""convert a value list into an LDAP-escaped attr=value filter list"""
return set(map(lambda x:attr + cmp + escape_filter_chars(x), valuelist))
@staticmethod
def filters2str(*filters, operator, default=''):
"""convert a list of filters to a single filter(string) with operator"""
result = set('(%s)' % f if f[0]!='(' else f for f in filters if f)
return '(' + operator + ''.join(result) + ')' if len(result) > 1 else \
result.pop() if result else default
@staticmethod
def notfilter(fstr):
"""Create a negative (NOT) LDAP filter based on a filter (string)"""
return '' if not fstr else ('(!%s)' if fstr[0]=='(' else '(!(%s))')%fstr
def objectclassfilter(self, *objclasses, operator='|', cmp='=', default=''):
"""Generates an LDAP filter to retrieve specific objectclass(es)"""
objclsfilter = self.attrfilters(objclasses, 'objectClass', cmp)
return self.filters2str(*objclsfilter,operator=operator,default=default)
def usersfilter(self, *users, operator='|', cmp='=', default=''):
"""Generates an LDAP filter to retrieve users based on login name(s)"""
userfilter = self.attrfilters(users,self.USER_LOGINATTR,cmp)
return self.filters2str(*userfilter, operator=operator, default=default)
def groupsfilter(self, *groups, operator='|', cmp='=', default=''):
"""Generates an LDAP filter to retrieve groups based on group name(s)"""
groupfilter = self.attrfilters(groups, self.GROUP_NAMEATTR, cmp)
return self.filters2str(*groupfilter, operator=operator, default=default)
def groupmemberfilter(self, *members, operator='|', cmp='=', default=''):
"""Generates an LDAP filter to retrieve groups based on their members"""
memberfilter = self.attrfilters(members, self.GROUP_MEMBERATTR, cmp)
return self.filters2str(*memberfilter,operator=operator,default=default)
def __init__(self, server, basedn=None):
"""Initialize connection to server, get server basedn unless provided"""
super(LDAPConnection, self).__init__(server)
self._basedn = basedn if basedn else self.get_naming_contexts()[0].decode()
logger.debug('Connected to %s, base_dn=%s', server, self._basedn)
def check_schema(self, exists=True, update_schema=False):
"""Check if schema customizations are present in the FreeIPA LDAP
server (or not, depending on 'exists') and apply the changes if
'update_schema'. Returns whether the desired state is present.
"""
if not self.SCHEMA_ATTRIBUTES and not self.SCHEMA_OBJECTCLASSES:
return True
logger.debug('Checking LDAP schema customizations presence in FreeIPA')
operation = MOD_ADD if exists else MOD_DELETE
config = { 'attributeTypes': self.SCHEMA_ATTRIBUTES,
'objectClasses': self.SCHEMA_OBJECTCLASSES }
ipa_ldap = LDAPObject('ldap:///')
ipa_schema = ipa_ldap.read_s(self.FREEIPA_SCHEMA_DN, attrlist=config.keys())
updates = [ (operation, key, value) for key, cfg in config.items()
for cur in ({v.split(b' ')[1]: v for v in ipa_schema[key]},)
for value in ([ d for o,d in cfg.items() if o not in cur ] \
if exists else [cur[o] for o in cfg if o in cur],) if value]
if updates and update_schema:
updates = sorted(updates, key=lambda x: x[1], reverse=not exists)
logger.info('%sing LDAP schema customizations in FreeIPA',
'Add' if exists else 'Delet')
logger.debug('LDAP Schema changes: %s', updates)
ipa_ldap.bind_s('cn=directory manager',
getpass('FreeIPA diradmin password: '))
ipa_ldap.modify_s(self.FREEIPA_SCHEMA_DN, updates)
elif updates:
logger.debug('Not %sing LDAP schema customizations in FreeIPA',
'add' if exists else 'delet')
else:
logger.debug('LDAP schema customizations are %s in FreeIPA',
'present' if exists else 'absent')
ipa_ldap.unbind()
return(not updates or update_schema)
def search(self, base, *args, relativebase=True, **kwargs):
"""Search using LDAPObject.search(), adding baseddn to base if needed"""
if relativebase and not base.endswith(self._basedn):
base += ',' + self._basedn
return super(LDAPConnection, self).search(base, *args, **kwargs)
def get_group_members(self, *group):
"""Returns set with users that are member of the provided group(s)"""
if not group:
return set()
filter=self.filters2str(self.objectclassfilter(*self.GROUP_OBJECTCLASS),
self.groupsfilter(*groups), operator='&')
logger.debug('Searching %s members with LDAP filter: %s',group,filter)
attrs = (self.GROUP_MEMBERATTR,)
msg_id = self.search(self.GROUP_SUBTREE, SCOPE_SUBTREE, filter, attrs)
return set(user.decode() for _,res_data,_,_ in ldap.allresults(msg_id)
for _, entry in res_data
for userlist in entry.values()
for user in userlist)
def get_user_groups(self, user, groups=()):
"""Returns list of groups that the specified user is member of.
checks the list of groups, if provided, or all groups
"""
filter=self.filters2str(self.objectclassfilter(*self.GROUP_OBJECTCLASS),
self.groupmemberfilter(user),
self.groupsfilter(*groups), operator='&')
logger.debug('Searching user\'s groups with LDAP filter: %s', filter)
attrs = (self.GROUP_NAMEATTR,self.GROUP_GIDATTR,self.GROUP_DESCATTR)
msg_id = self.search(self.GROUP_SUBTREE, SCOPE_SUBTREE, filter, attrs)
return [ (self.ldapstr2ipa(entry[self.GROUP_NAMEATTR]),
self.ldapstr2ipa(entry[self.GROUP_GIDATTR]),
self.ldapstr2ipa(entry.get(self.GROUP_DESCATTR,
entry[self.GROUP_NAMEATTR])) )
for _,res_data,_,_ in ldap.allresults(msg_id)
for dn, entry in res_data ]
def get_users(self, *users, excl_users=(), customfilter='', attrs=None):
"""Returns an generator to iterate over LDAP users mapped to FreeIPA.
This function obtains the list of users (all if not specified) and
support exclusion list and custom filters for further control
"""
filter=self.filters2str(self.objectclassfilter(*self.USER_OBJECTCLASS),
customfilter, self.usersfilter(*users),
self.notfilter(self.usersfilter(*excl_users)),
operator='&', default='(%s=*)'%self.USER_LOGINATTR)
logger.debug('Searching users with LDAP filter: %s', filter)
msg_id = self.search(self.USER_SUBTREE, SCOPE_SUBTREE, filter, attrs)
for res_type,res_data,res_msgid,res_controls in self.allresults(msg_id):
for dn, entry in res_data:
if logger.getEffectiveLevel() <= logging.DEBUG:
notmigrated = ', '.join(key for key in entry if key not in
(*self.USER_MAPPING.keys(), 'objectClass'))
if notmigrated:
logger.debug('Ignoring attributes: %s', notmigrated)
yield (dn, { ipa_key: conv(v) for k, v in entry.items()
if k in self.USER_MAPPING
for ipa_key, conv in (self.USER_MAPPING[k],) })
##################[ MacOS LDAP Connection / ResultProcessor ]##################
class MacOSLDAPConnection(LDAPConnection):
"""LDAPConnection subclass to migrate from Apple's OpenDirectory"""
# @staticmethod
# def binary2ipa(valuelist): return b64encode(valuelist[0]).decode()
SCHEMA_ATTRIBUTES = {
# Definition (and OID) taken from Apple MacOS Server OpenDirectory
b"1.3.6.1.4.1.63.1000.1.1.1.1.20":
b"( 1.3.6.1.4.1.63.1000.1.1.1.1.20 NAME ( 'apple-generateduid' )"
b" DESC 'generated unique ID' X-ORIGIN 'Apple Server OpenDirectoy'"
b" EQUALITY caseExactMatch SUBSTR caseExactSubstringsMatch"
b" SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE )",
}
SCHEMA_OBJECTCLASSES = {
# OID: iso.org.dod.internet.private.enterprise.lindenaar.2018.8.2.1.1
# https://www.iana.org/assignments/enterprise-numbers/enterprise-numbers
b"1.3.6.1.4.1.18143.2018.8.2.1.1":
b"( 1.3.6.1.4.1.18143.2018.8.2.1.1"
b" NAME 'openDirectoryPerson' SUP person STRUCTURAL"
b" MAY ( c $ apple-generateduid ) X-ORIGIN 'Extending FreeIPA' )"
}
USER_OBJECTCLASS = ( *LDAPConnection.USER_OBJECTCLASS, 'apple-user' )
USER_MAPPING = { **LDAPConnection.USER_MAPPING,
'objectClass': (custom_attr('objectclass'), lambda x: 'openDirectoryPerson'),
'c': (custom_attr('c'), LDAPConnection.ldapstr2ipa),
'apple-generateduid': (custom_attr('apple-generateduid'),LDAPConnection.ldapstr2ipa),
'apple-user-homeurl': LDAPConnection.USER_MAPPING['homeDirectory'],
# TODO: MacOS attribute: jpegPhoto
# 'jpegPhoto': (custom_attr('jpegphoto'), binary2ipa.__func__),
# TODO: migrate MacOS Passwords (not sure this is possible)
}
GROUP_OBJECTCLASS = ( *LDAPConnection.GROUP_OBJECTCLASS, 'apple-group' )
GROUP_DESCATTR = 'apple-group-realname'
###########[ Generic function to get/create/update FreeIPA entries ]###########
def ipa_update_create(api,entity,name,*keys,get_params={},add_params={},**data):
""" Generic function to create or update an entity and return it.
This will create or update the entity, with key *key so that it reflects
the values provided in the mapping **data.
Parameters:
api: FreeIPA API object to use
entity: name of the FreeIPA entity type to create/update
name: textual name of the entity for logging
keys: the FreeIPA key for this entity (1 or more values)
get_params: additional parameters when retrieving the entity
add_params: additional parameters/values when creating the entity
data: mapping containing the desired values for the entity
Returns the updated entity
"""
try:
ipa_data = getattr(api.Command, '%s_show' % entity)(*keys, **get_params)['result']
if data:
updates = { k:v for k, v in data.items() if not (k in ipa_data and v in ipa_data[k]) }
if updates:
logger.info('updating existing %s %s in FreeIPA', name, keys[-1])
return getattr(api.Command, '%s_mod' % entity)(*keys, **updates)['result']
else:
logger.debug('no updates for existing %s %s in FreeIPA', name, keys[-1])
else:
logger.debug('found existing %s %s in FreeIPA', name, keys[-1])
return ipa_data
except NotFound:
logger.info('creating new %s %s in FreeIPA', name, keys[-1])
return getattr(api.Command, '%s_add' % entity)(*keys, **data, **add_params)['result']
##########################[ Command-line processing ]##########################
def parse_args():
"""Parse command line and get parameters from environment if not set"""
parser = ArgumentParser(
description='Migrate or synchronize LDAP users with FreeIPA',
epilog='(*) unless specified FreeIPA defaults are used. %s is replaced '
'by the userID'
)
parser.add_argument('-V', '--version',action="version",version=PROG_VERSION)
pgroup = parser.add_mutually_exclusive_group(required=False)
pgroup.add_argument('-O', '--apple-opendirectory', action='store_const',
dest='ldapconnection', const=MacOSLDAPConnection,
default=LDAPConnection,
help='migrate from Apple\'s MacOS Server OpenDirectory')
parser.add_argument('ldapserver', help='LDAP Server to request users from')
parser.add_argument('-b', '--basedn', help='Base DN of source LDAP server, defaults to LDAP server')
parser.add_argument('-u', '--user', nargs='+', default=(),
help='user(s) to migrate/synchronize, defaults to all')
parser.add_argument('-g', '--member-of', nargs='+', dest='user_group', default=(),
help='migrate/synchronize members of group(s)')
parser.add_argument('-x', '--exclude-user', nargs='+', dest='x_user', default=(),
help='user(s) to exclude')
parser.add_argument('-X', '--exclude-group', nargs='+', dest='x_group', default=(),
help='exclude users in specified group(s)')
parser.add_argument('-f', '--filter', help='additional LDAP filter to apply')
parser.add_argument('-G', '--migrate-groups', nargs='*', dest='group',
help='migrate groups+membership for specified or all groups')
parser.add_argument('-H', '--migrate-homedir', nargs='?', dest='homedir', default="",
help='Migrate (if empty) or set homedir (*)')
parser.add_argument('-S', '--migrate-loginshell', nargs='?', dest='loginshell', default="",
help='Migrate (if empty) or set login shell (*)')
parser.add_argument('-P', '--migrate-password', action='store_true',
help='migrate passwords from LDAP (if present)')
parser.add_argument('-p', '--enforce-passwords', dest='password_logfile',
help='enforce users have passwords, file generated passwords')
parser.add_argument('-s', '--stage', action='store_true',
help='create new users as staged users')
parser.add_argument('-c', '--compatibility-view', dest='idview',
help='Maintain ID Compatibility view to preserve UID/GID/homedir/shell')
parser.add_argument('-U', '--update-schema', action='store_true',
help='Configure necessary LDAP schema customizations')
parser.add_argument('-C', '--cleanup-schema', action='store_true',
help='Remove applied LDAP schema customizations and exit')
pgroup = parser.add_mutually_exclusive_group(required=False)
pgroup.add_argument('-q', '--quiet', action=SetLogLevel, const=logging.CRITICAL,
default=logging.CRITICAL, help='quiet (only fatal errors)')
pgroup.add_argument('-v', '--verbose', action=SetLogLevel, const=logging.INFO,
help='more verbose output')
pgroup.add_argument('-d', '--debug', action=SetLogLevel, const=logging.DEBUG,
help='debug output')
parser.add_argument('-l', '--logfile', action=SetLogFile,
help='send logging output to logfile')
return parser.parse_args()
############################[ LDAPUser processing ]############################
def process_user(api, userid, user_data, stage=False, enforce_password=False):
"""Process a single LDAP user and synchronize with FreeIPA using its API"""
logger.info('processing LDAP user %s', userid)
try:
ipa_data = api.Command.user_show(userid, all=True)['result']
logger.debug('found active user %s', userid)
stage = False
except NotFound:
try:
ipa_data = api.Command.stageuser_show(userid, all=True)['result']
if stage:
logger.debug('found existing stage entry for user %s', userid)
else:
logger.info('activating stage user %s', userid)
api.Command.stageuser_activate(userid)
except NotFound:
ipa_data = { }
what = 'stageuser' if stage else 'user'
updates = user_data if not ipa_data else { key: value
for key, value in user_data.items() if not (key in ipa_data and
value in ipa_data[key] if isinstance(value, str)
else set(value).issubset(ipa_data[key])) }
if ipa_data.get('has_password') and 'userpassword' in updates:
logger.debug('Not replacing existing password for %s %s', what, userid)
del updates['userpassword']
elif enforce_password and not (stage or ipa_data.get('has_password')):
logger.info('Enforcing password for user %s in FreeIPA', userid)
updates['random'] = True
if updates or not ipa_data:
action = 'Upd' if ipa_data else 'Cre'
logger.info('%sating %s %s in FreeIPA', action, what, userid)
logger.debug('%sating %s %s with %s', action, what, userid, updates)
cust=[k+'='+v for k,v in updates.items() if isinstance(k, custom_attr)]
if cust:
updates = { 'addattr': cust if ipa_data else None, **{ k:v
for k,v in updates.items() if not isinstance(k, custom_attr) }}
command = getattr(api.Command, what + ('_mod' if ipa_data else '_add'))
ipa_data = command(userid, **updates)['result']
if cust and action == 'Cre':
getattr(api.Command, what + '_mod')(userid, addattr=cust)
else:
logger.debug('no updates for %s %s in FreeIPA', what, userid)
return ipa_data.get('memberof_group', ()), stage, \
ipa_data.get('randompassword')
#########################[ Get FreeIPA group members ]#########################
def get_group(api, group, gid, description, idview, group_cache={}):
try:
return group_cache[group]
except KeyError:
ipa_group = ipa_update_create(api, 'group', 'group', group,
add_params={'description': description})
result = group_cache[group] = ipa_group.get('member_user', [])
if idview: # Update or create idoverride for group?
ipa_update_create(api, 'idoverridegroup', 'GID override', idview,
group, gidnumber=gid, cn=group, add_params={
'description': "Added by %s while syncronizing %s with %s" \
% (PROG_NAME, group, args.ldapserver) })
return result
######################[ Update FreeIPA group membership ]######################
def group_commit(command, desc, group, updates):
logger.info('Updating FreeIPA group %s, %s: %s', group, desc, updates)
getattr(api.Command, command)(group, user=list(updates))
def group_queue(command, desc, groups, users, commit, maxqueue=0, queue={}):
if groups and users:
for group in (groups,) if isinstance(groups, str) else groups:
try:
queued = queue[group]
queued.update((users,) if isinstance(users, str) else users)
if not commit and len(queued) > maxqueue:
group_commit(command, desc, group, queued)
del queue[group]
except KeyError:
queue[group] = set((users,) if isinstance(users,str) else users)
if commit and queue:
for group, updates in queue.items():
group_commit(command, desc, group, updates)
queue.clear()
def group_add(api, groups=None, users=None, commit=False, maxq=100, queue={}):
group_queue('group_add_member', 'adding', groups, users, commit, maxq,queue)
def group_del(api, groups=None, users=None, commit=False, maxq=100, queue={}):
group_queue('group_remove_member','removing',groups,users,commit,maxq,queue)
###############################################################################
def attr_replace(data, attr, value, param=None):
"""Remove/overwrite data[option] based on value, return inital data[option].
parameters:
data - dict to update
option - attribute in data to update
value - if ''-->delete, if None-->no change, else overwrite with value
param - if value contains %s, it will be replaced by this value
"""
result = data.get(attr)
if value:
data[attr] = value % userid if '%s' in value else value
elif value == '' and result is not None:
del data[attr]
return result
def attr_remove(data, attr): return attr_replace(data, attr, '', None)
if __name__ == '__main__':
logging.basicConfig(format=LOG_FORMAT)
args = parse_args()
try:
logger.debug('connecting to FreeIPA')
if api.isdone('finalize') is False:
api.bootstrap_with_global_options(context='api')
api.finalize()
api.Backend.rpcclient.connect()
logger.info('Connecting to LDAP server %s', args.ldapserver)
ldap = args.ldapconnection(args.ldapserver, args.basedn)
if not ldap.check_schema(exists=not args.cleanup_schema,
update_schema=args.update_schema or args.cleanup_schema):
logger.error("Required LDAP schema customizations not in FreeIPA")
exit(1)
elif args.cleanup_schema:
print("LDAP schema customizations are removed from FreeIPA")
exit(0)
if args.idview: # Ensure IDView exists (if specified)
ipa_update_create(api, 'idview', 'Compatibility View', args.idview,
add_params={ 'description': 'Created by %s while syncronizing '
'with %s' % (PROG_NAME, args.ldapserver) })
logger.info('searching for users')
excl_users = ldap.get_group_members(*args.x_group) | set(args.x_user)
users = ldap.get_group_members(*args.user_group) | set(args.user)
for dn, user_data in ldap.get_users(*users, excl_users=excl_users,
customfilter=args.filter):
user, *aliases = attr_remove(user_data, 'uid')
if aliases:
logger.warn('ignoring additional userid\'s for user %s: %s',
user,', '.join(aliases))
if not args.migrate_password:
attr_remove(user_data, 'userpassword')
uid=attr_remove(user_data, 'uidnumber')
gid=attr_remove(user_data, 'gidnumber')
homedir=attr_replace(user_data,'homedirectory',args.homedir,user)
loginshell=attr_replace(user_data,'loginshell',args.loginshell,user)
in_groups, is_stage, password = process_user(api, user, user_data,
stage=args.stage, enforce_password=bool(args.password_logfile))
if password:
with open(args.password_logfile, 'a') as file:
print(user, password, user_data.get('givenname',''),
user_data.get('sn',''), user_data.get('cn',''),
','.join(user_data.get('mail','')), sep='\t', file=file)
if is_stage:
logger.debug('not processing group membership or ID overrides '
'for stage user %s', user)
continue
if args.idview: # Update or create the idoverride for the user?
ipa_update_create(api, 'idoverrideuser', 'UID/GID override',
args.idview, user, uidnumber=uid, gidnumber=gid,
homedirectory=homedir, loginshell=loginshell,
add_params={ 'description':
"Added by %s while syncronizing %s with %s"
% (PROG_NAME, user, args.ldapserver)})
if args.group is not None:
remaining_groups = list(in_groups) if not args.group else \
[ g for g in in_groups if g in args.group ]
for group, gid, desc in ldap.get_user_groups(user, args.group):
if user not in get_group(api,group,gid,desc,args.idview):
logger.debug('adding user %s to group %s', user, group)
group_add(api, group, user)
if group in remaining_groups:
remaining_groups.remove(group)
if remaining_groups:
logger.debug('removing user %s from group(s) %s', user,
', '.join(remaining_groups))
group_del(api, remaining_groups, user)
group_add(api, commit=True)
group_del(api, commit=True)
except LDAPError as e:
logger.critical("Error with LDAP commmunication: %s", e)
except AuthenticationError:
logger.critical("Unable to authenticate to FreeIPA, "
"make sure you have a valid Kerberos ticket!")
except PublicError as e:
logger.critical("error while communicating with FreeIPA: %s", e)
else:
exit(0)
exit(1)