2011-09-07 03:17:12 -05:00
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#! /usr/bin/python
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#
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# Authors: Sumit Bose <sbose@redhat.com>
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# Based on ipa-server-install by Karl MacMillan <kmacmillan@mentalrootkit.com>
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# and ipa-dns-install by Martin Nagy
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#
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# Copyright (C) 2011 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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from ipaserver.plugins.ldap2 import ldap2
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from ipaserver.install import adtrustinstance
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from ipaserver.install.installutils import *
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2012-07-13 10:12:48 -05:00
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from ipaserver.install import service
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2011-09-07 03:17:12 -05:00
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from ipapython import version
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from ipapython import ipautil, sysrestore
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from ipalib import api, errors, util
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from ipapython.config import IPAOptionParser
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import krbV
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import ldap
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2011-11-15 13:39:31 -06:00
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from ipapython.ipa_log_manager import *
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Use DN objects instead of strings
* Convert every string specifying a DN into a DN object
* Every place a dn was manipulated in some fashion it was replaced by
the use of DN operators
* Add new DNParam parameter type for parameters which are DN's
* DN objects are used 100% of the time throughout the entire data
pipeline whenever something is logically a dn.
* Many classes now enforce DN usage for their attributes which are
dn's. This is implmented via ipautil.dn_attribute_property(). The
only permitted types for a class attribute specified to be a DN are
either None or a DN object.
* Require that every place a dn is used it must be a DN object.
This translates into lot of::
assert isinstance(dn, DN)
sprinkled through out the code. Maintaining these asserts is
valuable to preserve DN type enforcement. The asserts can be
disabled in production.
The goal of 100% DN usage 100% of the time has been realized, these
asserts are meant to preserve that.
The asserts also proved valuable in detecting functions which did
not obey their function signatures, such as the baseldap pre and
post callbacks.
* Moved ipalib.dn to ipapython.dn because DN class is shared with all
components, not just the server which uses ipalib.
* All API's now accept DN's natively, no need to convert to str (or
unicode).
* Removed ipalib.encoder and encode/decode decorators. Type conversion
is now explicitly performed in each IPASimpleLDAPObject method which
emulates a ldap.SimpleLDAPObject method.
* Entity & Entry classes now utilize DN's
* Removed __getattr__ in Entity & Entity clases. There were two
problems with it. It presented synthetic Python object attributes
based on the current LDAP data it contained. There is no way to
validate synthetic attributes using code checkers, you can't search
the code to find LDAP attribute accesses (because synthetic
attriutes look like Python attributes instead of LDAP data) and
error handling is circumscribed. Secondly __getattr__ was hiding
Python internal methods which broke class semantics.
* Replace use of methods inherited from ldap.SimpleLDAPObject via
IPAdmin class with IPAdmin methods. Directly using inherited methods
was causing us to bypass IPA logic. Mostly this meant replacing the
use of search_s() with getEntry() or getList(). Similarly direct
access of the LDAP data in classes using IPAdmin were replaced with
calls to getValue() or getValues().
* Objects returned by ldap2.find_entries() are now compatible with
either the python-ldap access methodology or the Entity/Entry access
methodology.
* All ldap operations now funnel through the common
IPASimpleLDAPObject giving us a single location where we interface
to python-ldap and perform conversions.
* The above 4 modifications means we've greatly reduced the
proliferation of multiple inconsistent ways to perform LDAP
operations. We are well on the way to having a single API in IPA for
doing LDAP (a long range goal).
* All certificate subject bases are now DN's
* DN objects were enhanced thusly:
- find, rfind, index, rindex, replace and insert methods were added
- AVA, RDN and DN classes were refactored in immutable and mutable
variants, the mutable variants are EditableAVA, EditableRDN and
EditableDN. By default we use the immutable variants preserving
important semantics. To edit a DN cast it to an EditableDN and
cast it back to DN when done editing. These issues are fully
described in other documentation.
- first_key_match was removed
- DN equalty comparison permits comparison to a basestring
* Fixed ldapupdate to work with DN's. This work included:
- Enhance test_updates.py to do more checking after applying
update. Add test for update_from_dict(). Convert code to use
unittest classes.
- Consolidated duplicate code.
- Moved code which should have been in the class into the class.
- Fix the handling of the 'deleteentry' update action. It's no longer
necessary to supply fake attributes to make it work. Detect case
where subsequent update applies a change to entry previously marked
for deletetion. General clean-up and simplification of the
'deleteentry' logic.
- Rewrote a couple of functions to be clearer and more Pythonic.
- Added documentation on the data structure being used.
- Simplfy the use of update_from_dict()
* Removed all usage of get_schema() which was being called prior to
accessing the .schema attribute of an object. If a class is using
internal lazy loading as an optimization it's not right to require
users of the interface to be aware of internal
optimization's. schema is now a property and when the schema
property is accessed it calls a private internal method to perform
the lazy loading.
* Added SchemaCache class to cache the schema's from individual
servers. This was done because of the observation we talk to
different LDAP servers, each of which may have it's own
schema. Previously we globally cached the schema from the first
server we connected to and returned that schema in all contexts. The
cache includes controls to invalidate it thus forcing a schema
refresh.
* Schema caching is now senstive to the run time context. During
install and upgrade the schema can change leading to errors due to
out-of-date cached schema. The schema cache is refreshed in these
contexts.
* We are aware of the LDAP syntax of all LDAP attributes. Every
attribute returned from an LDAP operation is passed through a
central table look-up based on it's LDAP syntax. The table key is
the LDAP syntax it's value is a Python callable that returns a
Python object matching the LDAP syntax. There are a handful of LDAP
attributes whose syntax is historically incorrect
(e.g. DistguishedNames that are defined as DirectoryStrings). The
table driven conversion mechanism is augmented with a table of
hard coded exceptions.
Currently only the following conversions occur via the table:
- dn's are converted to DN objects
- binary objects are converted to Python str objects (IPA
convention).
- everything else is converted to unicode using UTF-8 decoding (IPA
convention).
However, now that the table driven conversion mechanism is in place
it would be trivial to do things such as converting attributes
which have LDAP integer syntax into a Python integer, etc.
* Expected values in the unit tests which are a DN no longer need to
use lambda expressions to promote the returned value to a DN for
equality comparison. The return value is automatically promoted to
a DN. The lambda expressions have been removed making the code much
simpler and easier to read.
* Add class level logging to a number of classes which did not support
logging, less need for use of root_logger.
* Remove ipaserver/conn.py, it was unused.
* Consolidated duplicate code wherever it was found.
* Fixed many places that used string concatenation to form a new
string rather than string formatting operators. This is necessary
because string formatting converts it's arguments to a string prior
to building the result string. You can't concatenate a string and a
non-string.
* Simplify logic in rename_managed plugin. Use DN operators to edit
dn's.
* The live version of ipa-ldap-updater did not generate a log file.
The offline version did, now both do.
https://fedorahosted.org/freeipa/ticket/1670
https://fedorahosted.org/freeipa/ticket/1671
https://fedorahosted.org/freeipa/ticket/1672
https://fedorahosted.org/freeipa/ticket/1673
https://fedorahosted.org/freeipa/ticket/1674
https://fedorahosted.org/freeipa/ticket/1392
https://fedorahosted.org/freeipa/ticket/2872
2012-05-13 06:36:35 -05:00
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from ipapython.dn import DN
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2011-09-07 03:17:12 -05:00
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2012-05-31 07:34:09 -05:00
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log_file_name = "/var/log/ipaserver-install.log"
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2011-09-07 03:17:12 -05:00
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def parse_options():
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parser = IPAOptionParser(version=version.VERSION)
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parser.add_option("-d", "--debug", dest="debug", action="store_true",
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default=False, help="print debugging information")
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parser.add_option("--ip-address", dest="ip_address",
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type="ip", ip_local=True, help="Master Server IP Address")
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parser.add_option("--netbios-name", dest="netbios_name",
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help="NetBIOS name of the IPA domain")
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2011-10-13 05:01:57 -05:00
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parser.add_option("--no-msdcs", dest="no_msdcs", action="store_true",
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default=False, help="Do not create DNS service records " \
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"for Windows in managed DNS server")
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2012-06-12 10:53:36 -05:00
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parser.add_option("--rid-base", dest="rid_base", type=int, default=1000,
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help="Start value for mapping UIDs and GIDs to RIDs")
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parser.add_option("--secondary-rid-base", dest="secondary_rid_base",
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type=int, default=100000000,
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help="Start value of the secondary range for mapping " \
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"UIDs and GIDs to RIDs")
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2011-09-07 03:17:12 -05:00
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parser.add_option("-U", "--unattended", dest="unattended", action="store_true",
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default=False, help="unattended installation never prompts the user")
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2012-08-17 07:26:58 -05:00
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parser.add_option("-a", "--admin-password",
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sensitive=True, dest="admin_password",
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help="admin user kerberos password")
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parser.add_option("-A", "--admin-name",
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sensitive=True, dest="admin_name", default='admin',
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help="admin user principal")
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2012-10-02 15:11:17 -05:00
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parser.add_option("--add-sids", dest="add_sids", action="store_true",
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default=False, help="Add SIDs for existing users and" \
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"groups as the final step")
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2011-09-07 03:17:12 -05:00
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options, args = parser.parse_args()
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safe_options = parser.get_safe_opts(options)
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return safe_options, options
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def netbios_name_error(name):
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2012-10-29 15:43:56 -05:00
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print "\nIllegal NetBIOS name [%s].\n" % name
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2011-09-07 03:17:12 -05:00
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print "Up to 15 characters and only uppercase ASCII letter and digits are allowed."
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def read_netbios_name(netbios_default):
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netbios_name = ""
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print "Enter the NetBIOS name for the IPA domain."
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print "Only up to 15 uppercase ASCII letters and digits are allowed."
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print "Example: EXAMPLE."
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print ""
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print ""
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if not netbios_default:
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netbios_default = "EXAMPLE"
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while True:
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netbios_name = ipautil.user_input("NetBIOS domain name", netbios_default, allow_empty = False)
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print ""
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if adtrustinstance.check_netbios_name(netbios_name):
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break
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netbios_name_error(netbios_name)
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return netbios_name
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2012-08-17 07:26:58 -05:00
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def read_admin_password(admin_name):
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print "Configuring cross-realm trusts for IPA server requires password for user '%s'." % (admin_name)
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print "This user is a regular system account used for IPA server administration."
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print ""
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admin_password = read_password(admin_name, confirm=False, validate=None)
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return admin_password
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2012-10-29 15:43:56 -05:00
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def set_and_check_netbios_name(netbios_name, unattended):
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"""
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Depending if trust in already configured or not a given NetBIOS domain
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name must be handled differently.
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If trust is not configured the given NetBIOS is used or the NetBIOS is
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generated if none was given on the command line.
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If trust is already configured the given NetBIOS name is used to reset
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the stored NetBIOS name it it differs from the current one.
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"""
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flat_name_attr = 'ipantflatname'
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cur_netbios_name = None
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gen_netbios_name = None
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reset_netbios_name = False
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dom_dn = None
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try:
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(dom_dn, entry) = api.Backend.ldap2.get_entry(DN(('cn', api.env.domain),
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api.env.container_cifsdomains,
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ipautil.realm_to_suffix(api.env.realm)),
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[flat_name_attr])
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except errors.NotFound:
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# trust not configured
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pass
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else:
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cur_netbios_name = entry.get(flat_name_attr)[0]
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if cur_netbios_name and not netbios_name:
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# keep the current NetBIOS name
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netbios_name = cur_netbios_name
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reset_netbios_name = False
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elif cur_netbios_name and cur_netbios_name != netbios_name:
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# change the NetBIOS name
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print "Current NetBIOS domain name is %s, new name is %s.\n" % \
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(cur_netbios_name, netbios_name)
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print "Please note that changing the NetBIOS name might " \
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"break existing trust relationships."
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if unattended:
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reset_netbios_name = True
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print "NetBIOS domain name will be changed to %s.\n" % \
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netbios_name
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else:
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print "Say 'yes' if the NetBIOS shall be changed and " \
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"'no' if the old one shall be kept."
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reset_netbios_name = ipautil.user_input(
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'Do you want to reset the NetBIOS domain name?',
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default = False, allow_empty = False)
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if not reset_netbios_name:
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netbios_name = cur_netbios_name
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elif cur_netbios_name and cur_netbios_name == netbios_name:
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# keep the current NetBIOS name
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reset_netbios_name = False
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elif not cur_netbios_name:
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if not netbios_name:
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gen_netbios_name = adtrustinstance.make_netbios_name(api.env.domain)
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if dom_dn:
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# Fix existing trust configuration
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print "Trust is configured but no NetBIOS domain name found, " \
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"setting it now."
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reset_netbios_name = True
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else:
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# initial trust configuration
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reset_netbios_name = False
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else:
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# all possible cases should be covered above
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raise Exception('Unexpected state while checking NetBIOS domain name')
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if not adtrustinstance.check_netbios_name(netbios_name):
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if unattended:
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netbios_name_error(netbios_name)
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sys.exit("Aborting installation.")
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else:
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if netbios_name:
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netbios_name_error(netbios_name)
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netbios_name = None
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if not unattended and not netbios_name:
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netbios_name = read_netbios_name(gen_netbios_name)
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return (netbios_name, reset_netbios_name)
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2012-08-17 07:26:58 -05:00
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def ensure_admin_kinit(admin_name, admin_password):
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try:
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ipautil.run(['kinit', admin_name], stdin=admin_password+'\n')
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except ipautil.CalledProcessError, e:
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print "There was error to automatically re-kinit your admin user ticket."
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return False
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return True
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2011-09-07 03:17:12 -05:00
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def main():
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safe_options, options = parse_options()
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if os.getegid() != 0:
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sys.exit("Must be root to setup AD trusts on server")
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2012-05-31 07:34:09 -05:00
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standard_logging_setup(log_file_name, debug=options.debug, filemode='a')
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print "\nThe log file for this installation can be found in %s" % log_file_name
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2011-09-07 03:17:12 -05:00
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2011-11-15 13:39:31 -06:00
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root_logger.debug('%s was invoked with options: %s' % (sys.argv[0], safe_options))
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root_logger.debug("missing options might be asked for interactively later\n")
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2011-09-07 03:17:12 -05:00
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2012-07-13 10:12:48 -05:00
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check_server_configuration()
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2011-09-07 03:17:12 -05:00
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global fstore
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fstore = sysrestore.FileStore('/var/lib/ipa/sysrestore')
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print "=============================================================================="
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print "This program will setup components needed to establish trust to AD domains for"
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print "the FreeIPA Server."
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print ""
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print "This includes:"
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print " * Configure Samba"
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print " * Add trust related objects to FreeIPA LDAP server"
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#TODO:
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#print " * Add a SID to all users and Posix groups"
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print ""
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print "To accept the default shown in brackets, press the Enter key."
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print ""
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# Check if samba packages are installed
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2011-11-07 05:59:20 -06:00
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if not adtrustinstance.check_inst():
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2011-09-07 03:17:12 -05:00
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sys.exit("Aborting installation.")
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# Initialize the ipalib api
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cfg = dict(
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in_server=True,
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debug=options.debug,
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)
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api.bootstrap(**cfg)
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api.finalize()
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if adtrustinstance.ipa_smb_conf_exists():
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if not options.unattended:
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while True:
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print "IPA generated smb.conf detected."
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if not ipautil.user_input("Overwrite smb.conf?", default = False, allow_empty = False):
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sys.exit("Aborting installation.")
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break
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# Check we have a public IP that is associated with the hostname
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2012-02-28 05:24:41 -06:00
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ip = None
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2011-09-07 03:17:12 -05:00
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try:
|
2012-03-27 04:50:48 -05:00
|
|
|
hostaddr = resolve_host(api.env.host)
|
|
|
|
if len(hostaddr) > 1:
|
|
|
|
print >> sys.stderr, "The server hostname resolves to more than one address:"
|
|
|
|
for addr in hostaddr:
|
|
|
|
print >> sys.stderr, " %s" % addr
|
|
|
|
|
|
|
|
if options.ip_address:
|
|
|
|
if str(options.ip_address) not in hostaddr:
|
|
|
|
print >> sys.stderr, "Address passed in --ip-address did not match any resolved"
|
|
|
|
print >> sys.stderr, "address!"
|
|
|
|
sys.exit(1)
|
|
|
|
print "Selected IP address:", str(options.ip_address)
|
|
|
|
ip = options.ip_address
|
|
|
|
else:
|
|
|
|
if options.unattended:
|
|
|
|
print >> sys.stderr, "Please use --ip-address option to specify the address"
|
|
|
|
sys.exit(1)
|
|
|
|
else:
|
|
|
|
ip = read_ip_address(api.env.host, fstore)
|
2011-09-07 03:17:12 -05:00
|
|
|
else:
|
2012-03-27 04:50:48 -05:00
|
|
|
ip = hostaddr and ipautil.CheckedIPAddress(hostaddr[0], match_local=True)
|
2011-09-07 03:17:12 -05:00
|
|
|
except Exception, e:
|
|
|
|
print "Error: Invalid IP Address %s: %s" % (ip, e)
|
2012-03-27 04:50:48 -05:00
|
|
|
print "Aborting installation"
|
|
|
|
sys.exit(1)
|
2011-09-07 03:17:12 -05:00
|
|
|
|
|
|
|
ip_address = str(ip)
|
2011-11-15 13:39:31 -06:00
|
|
|
root_logger.debug("will use ip_address: %s\n", ip_address)
|
2011-09-07 03:17:12 -05:00
|
|
|
|
|
|
|
if not options.unattended:
|
|
|
|
print ""
|
|
|
|
print "The following operations may take some minutes to complete."
|
|
|
|
print "Please wait until the prompt is returned."
|
|
|
|
print ""
|
|
|
|
|
2012-08-17 07:26:58 -05:00
|
|
|
admin_password = options.admin_password
|
|
|
|
if not (options.unattended or admin_password):
|
|
|
|
admin_password = read_admin_password(options.admin_name)
|
|
|
|
|
|
|
|
admin_kinited = None
|
|
|
|
if admin_password:
|
|
|
|
admin_kinited = ensure_admin_kinit(options.admin_name, admin_password)
|
|
|
|
if not admin_kinited:
|
|
|
|
print "Proceeding with credentials that existed before"
|
|
|
|
|
2012-07-13 10:12:48 -05:00
|
|
|
try:
|
|
|
|
ctx = krbV.default_context()
|
|
|
|
ccache = ctx.default_ccache()
|
|
|
|
principal = ccache.principal()
|
|
|
|
except krbV.Krb5Error, e:
|
|
|
|
sys.exit("Must have Kerberos credentials to setup AD trusts on server")
|
|
|
|
|
|
|
|
try:
|
|
|
|
api.Backend.ldap2.connect(ccache.name)
|
|
|
|
except errors.ACIError, e:
|
|
|
|
sys.exit("Outdated Kerberos credentials. Use kdestroy and kinit to update your ticket")
|
|
|
|
except errors.DatabaseError, e:
|
|
|
|
sys.exit("Cannot connect to the LDAP database. Please check if IPA is running")
|
2011-09-07 03:17:12 -05:00
|
|
|
|
|
|
|
try:
|
2012-07-13 10:12:48 -05:00
|
|
|
user = api.Command.user_show(unicode(principal[0]))['result']
|
|
|
|
group = api.Command.group_show(u'admins')['result']
|
|
|
|
if not (user['uid'][0] in group['member_user'] and
|
|
|
|
group['cn'][0] in user['memberof_group']):
|
|
|
|
raise errors.RequirementError(name='admins group membership')
|
|
|
|
except errors.RequirementError, e:
|
|
|
|
sys.exit("Must have administrative privileges to setup AD trusts on server")
|
|
|
|
except Exception, e:
|
|
|
|
sys.exit("Unrecognized error during check of admin rights: %s" % (str(e)))
|
2011-09-07 03:17:12 -05:00
|
|
|
|
2012-10-29 15:43:56 -05:00
|
|
|
(netbios_name, reset_netbios_name) = \
|
|
|
|
set_and_check_netbios_name(options.netbios_name,
|
|
|
|
options.unattended)
|
|
|
|
|
2012-07-13 10:12:48 -05:00
|
|
|
smb = adtrustinstance.ADTRUSTInstance(fstore)
|
|
|
|
smb.realm = api.env.realm
|
|
|
|
smb.autobind = service.ENABLED
|
2011-09-07 03:17:12 -05:00
|
|
|
smb.setup(api.env.host, ip_address, api.env.realm, api.env.domain,
|
2012-10-29 15:43:56 -05:00
|
|
|
netbios_name, reset_netbios_name,
|
|
|
|
options.rid_base, options.secondary_rid_base,
|
2012-10-02 15:11:17 -05:00
|
|
|
options.no_msdcs, options.add_sids)
|
2012-06-12 10:53:36 -05:00
|
|
|
smb.find_local_id_range()
|
2011-09-07 03:17:12 -05:00
|
|
|
smb.create_instance()
|
|
|
|
|
2012-06-21 08:19:27 -05:00
|
|
|
print """
|
|
|
|
=============================================================================
|
|
|
|
Setup complete
|
|
|
|
|
|
|
|
You must make sure these network ports are open:
|
|
|
|
\tTCP Ports:
|
|
|
|
\t * 138: netbios-dgm
|
|
|
|
\t * 139: netbios-ssn
|
|
|
|
\t * 445: microsoft-ds
|
|
|
|
\tUDP Ports:
|
|
|
|
\t * 138: netbios-dgm
|
|
|
|
\t * 139: netbios-ssn
|
|
|
|
\t * 389: (C)LDAP
|
|
|
|
\t * 445: microsoft-ds
|
|
|
|
|
|
|
|
Additionally you have to make sure the FreeIPA LDAP server is not reachable
|
|
|
|
by any domain controller in the Active Directory domain by closing down
|
|
|
|
the following ports for these servers:
|
|
|
|
\tTCP Ports:
|
|
|
|
\t * 389, 636: LDAP/LDAPS
|
|
|
|
|
|
|
|
You may want to choose to REJECT the network packets instead of DROPing
|
|
|
|
them to avoid timeouts on the AD domain controllers.
|
|
|
|
|
|
|
|
=============================================================================
|
2012-08-17 07:26:58 -05:00
|
|
|
"""
|
|
|
|
if admin_password:
|
|
|
|
admin_kinited = ensure_admin_kinit(options.admin_name, admin_password)
|
|
|
|
|
|
|
|
if not admin_kinited:
|
|
|
|
print """
|
2012-06-21 08:19:27 -05:00
|
|
|
WARNING: you MUST re-kinit admin user before using 'ipa trust-*' commands
|
|
|
|
family in order to re-generate Kerberos tickets to include AD-specific
|
|
|
|
information"""
|
2011-09-07 03:17:12 -05:00
|
|
|
|
|
|
|
return 0
|
|
|
|
|
2012-05-31 07:34:09 -05:00
|
|
|
if __name__ == '__main__':
|
2012-07-13 10:12:48 -05:00
|
|
|
run_script(main, log_file_name=log_file_name,
|
2012-05-31 07:34:09 -05:00
|
|
|
operation_name='ipa-adtrust-install')
|