Add support for additional user name principal suffixes from
trusted Active Directory forests. UPN suffixes are property
of the forest and as such are associated with the forest root
domain.
FreeIPA stores UPN suffixes as ipaNTAdditionalSuffixes multi-valued
attribute of ipaNTTrustedDomain object class.
In order to look up UPN suffixes, netr_DsRGetForestTrustInformation
LSA RPC call is used instead of netr_DsrEnumerateDomainTrusts.
For more details on UPN and naming in Active Directory see
https://technet.microsoft.com/en-us/library/cc739093%28v=ws.10%29.aspxhttps://fedorahosted.org/freeipa/ticket/5354
Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>
External trust is a trust that can be created between Active Directory
domains that are in different forests or between an Active Directory
domain. Since FreeIPA does not support non-Kerberos means of
communication, external trust to Windows NT 4.0 or earlier domains is
not supported.
The external trust is not transitive and can be established to any
domain in another forest. This means no access beyond the external
domain is possible via the trust link.
Resolves: https://fedorahosted.org/freeipa/ticket/5743
Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>
Iteration over indexes without calling enumeration fuction is not pythonic and should not be used.
In this case iteration can be replaced by list comprehension. Fixing this allows to enable
pylint consider-using-enumerate check.
Reviewed-By: Petr Spacek <pspacek@redhat.com>
Reviewed-By: Lukas Slebodnik <lslebodn@redhat.com>
Commit enables check and also fixes:
ipaserver/dcerpc.py:718: [W0150(lost-exception),
DomainValidator.__search_in_dc] return statement in finally block may
swallow exception)
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
Wildcard imports should not be used.
Check for wildcard imports has been enabled in pylint.
Pylint note: options 'wildcard-import' causes too much false positive
results, so instead it I used 'unused-wildcard-import' option which has almost
the same effect.
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
The ipautil.run function now returns an object with returncode and
output are accessible as attributes.
The stdout and stderr of all commands are logged (unless skip_output is given).
The stdout/stderr contents must be explicitly requested with a keyword
argument, otherwise they are None.
This is because in Python 3, the output needs to be decoded, and that can
fail if it's not decodable (human-readable) text.
The raw (bytes) output is always available from the result object,
as is "leniently" decoded output suitable for logging.
All calls are changed to reflect this.
A use of Popen in cainstance is changed to ipautil.run.
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
The six way of doing this is to replace all occurences of "unicode"
with "six.text_type". However, "unicode" is non-ambiguous and
(arguably) easier to read. Also, using it makes the patches smaller,
which should help with backporting.
Reviewed-By: Petr Viktorin <pviktori@redhat.com>
For Windows Server 2012R2 and others which force SMB2 protocol use
we have to specify right DCE RPC binding options.
For using SMB1 protocol we have to omit specifying SMB2 protocol and
anything else or otherwise SMB1 would be considered a pipe to connect
to. This is by design of a binding string format.
https://fedorahosted.org/freeipa/ticket/5183
Reviewed-By: Tomas Babej <tbabej@redhat.com>
It's possible for AD to contact a wrong IPA server in case the DNS
SRV records on the AD sides are not properly configured.
Mention this case in the error message as well.
https://fedorahosted.org/freeipa/ticket/5013
Reviewed-By: Petr Vobornik <pvoborni@redhat.com>
One-way trust is the default now, use 'trust add --two-way ' to
force bidirectional trust
https://fedorahosted.org/freeipa/ticket/4959
In case of one-way trust we cannot authenticate using cross-realm TGT
against an AD DC. We have to use trusted domain object from within AD
domain and access to this object is limited to avoid compromising the whole
trust configuration.
Instead, IPA framework can call out to oddjob daemon and ask it to
run the script which can have access to the TDO object. This script
(com.redhat.idm.trust-fetch-domains) is using cifs/ipa.master principal
to retrieve TDO object credentials from IPA LDAP if needed and then
authenticate against AD DCs using the TDO object credentials.
The script pulls the trust topology out of AD DCs and updates IPA LDAP
store. Then IPA framework can pick the updated data from the IPA LDAP
under normal access conditions.
Part of https://fedorahosted.org/freeipa/ticket/4546
Reviewed-By: Tomas Babej <tbabej@redhat.com>
With Samba 4.2 there is a bug that prevents Samba to consider Kerberos
credentials used by IPA httpd process when talking to smbd. As result,
LSA RPC connection is seen as anonymous by Samba client code and we cannot
derive session key to use for encrypting trust secrets before transmitting
them.
Additionally, rewrite of the SMB protocol support in Samba caused previously
working logic of choosing DCE RPC binding string to fail. We need to try
a different set of priorities until they fail or succeed.
Requires Samba fixes from https://bugzilla.redhat.com/show_bug.cgi?id=1219832
Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1219834
Reviewed-By: Tomas Babej <tbabej@redhat.com>
Trust validation requires AD DC to contact IPA server to verify that trust account
actually works. It can fail due to DNS or firewall issue or if AD DC was able to
resolve IPA master(s) via SRV records, it still may contact a replica that has
no trust data replicated yet.
In case AD DC still returns 'access denied', wait 5 seconds and try validation again.
Repeat validation until we hit a limit of 10 attempts, at which point raise
exception telling what's happening.
https://fedorahosted.org/freeipa/ticket/4764
Reviewed-By: Tomas Babej <tbabej@redhat.com>
Certain operations against AD domain controller can only be done if its
FSMO role is primary domain controller. We need to use writable DC and
PDC when creating trust and updating name suffix routing information.
https://fedorahosted.org/freeipa/ticket/4479
Reviewed-By: Sumit Bose <sbose@redhat.com>
Fixes trust add, since now datetime object is returned
for 'modifytimestamp', which cannot be split like a string.
Reviewed-By: Nathaniel McCallum <npmccallum@redhat.com>
Trusted domain SID could be obtained through different means. When it is
fetched from the AD DC via LDAP, it needs to be extracted from a default
context and explicitly converted to unicode.
https://fedorahosted.org/freeipa/ticket/4246
Reviewed-By: Martin Kosek <mkosek@redhat.com>
We attempt to delete the trust that might exist already. If there are not enough
privileges to do so, we wouldn't be able to create trust at the next step and it will fail.
However, failure to create trust will be due to the name collision as we already had
the trust with the same name before. Thus, raise access denied exception here
to properly indicate wrong access level instead of returning NT_STATUS_OBJECT_NAME_COLLISION.
https://fedorahosted.org/freeipa/ticket/4202
Reviewed-By: Martin Kosek <mkosek@redhat.com>
When AD administrator credentials passed, they stored in realm_passwd,
not realm_password in the options.
When passing credentials to ipaserver.dcerpc.fetch_domains(), make sure
to normalize them.
Additionally, force Samba auth module to use NTLMSSP in case we have
credentials because at the point when trust is established, KDC is not
yet ready to issue tickets to a service in the other realm due to
MS-PAC information caching effects. The logic is a bit fuzzy because
credentials code makes decisions on what to use based on the smb.conf
parameters and Python bindings to set parameters to smb.conf make it so
that auth module believes these parameters were overidden by the user
through the command line and ignore some of options. We have to do calls
in the right order to force NTLMSSP use instead of Kerberos.
Fixes https://fedorahosted.org/freeipa/ticket/4046
When we get NT_STATUS_INVALID_PARAMETER in response to establish
DCE RPC pipe with Kerberos, the most likely reason is clock skew.
Suggest that it is so in the error message.
https://fedorahosted.org/freeipa/ticket/4024
Since FreeIPA KDC supports adding MS-PAC to HTTP/ipa.server principal,
it is possible to use it when talking to the trusted AD DC.
Remove support for authenticating as trust account because it should not
really be used other than within Samba.
Add IPA CLI to manage trust domains.
ipa trust-fetch-domains <trust> -- fetch list of subdomains from AD side and add new ones to IPA
ipa trustdomain-find <trust> -- show all available domains
ipa trustdomain-del <trust> <domain> -- remove domain from IPA view about <trust>
ipa trustdomain-enable <trust> <domain> -- allow users from trusted domain to access resources in IPA
ipa trustdomain-disable <trust> <domain> -- disable access to resources in IPA from trusted domain
By default all discovered trust domains are allowed to access IPA resources
IPA KDC needs also information for authentication paths to subdomains in case they
are not hierarchical under AD forest trust root. This information is managed via capaths
section in krb5.conf. SSSD should be able to generate it once
ticket https://fedorahosted.org/sssd/ticket/2093 is resolved.
part of https://fedorahosted.org/freeipa/ticket/3909
