When looking through the topology of a trusted forest, we should support
all types of forest trust records. Since Samba Python bindings parse the
data into a typed structure, a type of the record has to be taken into
account or there will be type mismatch when accessing elements of the
union:
typedef [switch_type(lsa_ForestTrustRecordType)] union {
[case(LSA_FOREST_TRUST_TOP_LEVEL_NAME)] lsa_StringLarge top_level_name;
[case(LSA_FOREST_TRUST_TOP_LEVEL_NAME_EX)] lsa_StringLarge top_level_name_ex;
[case(LSA_FOREST_TRUST_DOMAIN_INFO)] lsa_ForestTrustDomainInfo domain_info;
[default] lsa_ForestTrustBinaryData data;
} lsa_ForestTrustData;
typedef struct {
lsa_ForestTrustRecordFlags flags;
lsa_ForestTrustRecordType type;
NTTIME_hyper time;
[switch_is(type)] lsa_ForestTrustData forest_trust_data;
} lsa_ForestTrustRecord;
typedef [public] struct {
[range(0,4000)] uint32 count;
[size_is(count)] lsa_ForestTrustRecord **entries;
} lsa_ForestTrustInformation;
Each entry in the lsa_ForestTrustInformation has forest_trust_data
member but its content depends on the value of a type member
(forest_trust_data is a union of all possible structures).
Previously we assumed only TLN or TLN exclusion record which were
of the same type (lsa_StringLarge). Access to forest_trust_data.string
fails when forest_trust_data's type is lsa_ForestTrustDomainInfo as it
has no string member.
Fix the code by properly accessing the dns_domain_name from the
lsa_ForestTrustDomainInfo structure.
Fixes: https://pagure.io/freeipa/issue/7828
Reviewed-By: Christian Heimes <cheimes@redhat.com>
pylint 2.2.0 has a new checker for unnecessary pass statements. There is
no need to have a pass statement in functions or classes with a doc
string.
Fixes: https://pagure.io/freeipa/issue/7772
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Thomas Woerner <twoerner@redhat.com>
Python 2 had old style and new style classes. Python 3 has only new
style classes. There is no point to subclass from object any more.
See: https://pagure.io/freeipa/issue/7715
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>
Fix the following violations aiming to support Pylint 2.0
- `unneeded-not` (C0113):
Consider changing "not item in items" to "item not in items" used
when a boolean expression contains an unneeded negation.
- `useless-import-alias` (C0414):
Import alias does not rename original package Used when an import
alias is same as original package.e.g using import numpy as numpy
instead of import numpy as np
- `raising-format-tuple` (W0715):
Exception arguments suggest string formatting might be intended Used
when passing multiple arguments to an exception constructor, the
first of them a string literal containing what appears to be
placeholders intended for formatting
- `bad-continuation` (C0330):
This was already included on the disable list, although with current
version of pylint (2.0.0.dev2) violations at the end of the files
are not being ignored.
See: https://github.com/PyCQA/pylint/issues/2278
- `try-except-raise` (E0705):
The except handler raises immediately Used when an except handler
uses raise as its first or only operator. This is useless because it
raises back the exception immediately. Remove the raise operator or
the entire try-except-raise block!
- `consider-using-set-comprehension` (R1718):
Consider using a set comprehension Although there is nothing
syntactically wrong with this code, it is hard to read and can be
simplified to a set comprehension.Also it is faster since you don't
need to create another transient list
- `dict-keys-not-iterating` (W1655):
dict.keys referenced when not iterating Used when dict.keys is
referenced in a non-iterating context (returns an iterator in
Python 3)
- `comprehension-escape` (W1662):
Using a variable that was bound inside a comprehension Emitted when
using a variable, that was bound in a comprehension handler, outside
of the comprehension itself. On Python 3 these variables will be
deleted outside of the comprehension.
Issue: https://pagure.io/freeipa/issue/7614
Signed-off-by: Armando Neto <abiagion@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Aiming to support pylint 2.0 some functions and methods must have their
return statements updated in order to fix two new violations:
- `useless-return` (R1711):
Useless return at end of function or method Emitted when a single
"return" or "return None" statement is found at the end of function
or method definition. This statement can safely be removed because
Python will implicitly return None
- `inconsistent-return-statements` (R1710):
Either all return statements in a function should return an
expression, or none of them should. According to PEP8, if any return
statement returns an expression, any return statements where no value
is returned should explicitly state this as return None, and an
explicit return statement should be present at the end of the
function (if reachable)
Issue: https://pagure.io/freeipa/issue/7614
Signed-off-by: Armando Neto <abiagion@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
When AD forest A has a trust with a forest B that claims ownership
of a domain name (TLN) owned by an IPA forest, we need to build
exclusion record for that specific TLN, not our domain name.
Use realmdomains to find a correct exclusion entry to build.
Fixes: https://pagure.io/freeipa/issue/7370
Reviewed-By: Armando Neto <abiagion@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
Translation objects have support for format(). This allows to
get rid of unicode() which is deprecated in Python3.
Fixes: https://pagure.io/freeipa/issue/7586
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
On multiple occasions, SRV query answers were not properly sorted by
priority. Records with same priority weren't randomized and shuffled.
This caused FreeIPA to contact the same remote peer instead of
distributing the load across all available servers.
Two new helper functions now take care of SRV queries. sort_prio_weight()
sorts SRV and URI records. query_srv() combines SRV lookup with
sort_prio_weight().
Fixes: https://pagure.io/freeipa/issue/7475
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
LDAP connections no longer depend on sane settings in global ldap.conf
and use good default settings for cert validation, CA, and SASL canonization.
https://pagure.io/freeipa/issue/7418
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>
Add absolute_import from __future__ so that pylint
does not fail and to achieve python3 behavior in
python2.
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Replace all ldap.initialize() calls with a helper function
ldap_initialize(). It handles cacert and cert validation correctly. It
also provides a unique place to handle python-ldap 3.0 bytes warnings in
the future.
Fixes: https://pagure.io/freeipa/issue/7411
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Quite often users choose wrong type of trust on Active Directory side
when setting up a trust to freeIPA. The trust type supported by freeIPA
is just a normal forest trust to another Active Directory. However,
some people follow old internet recipes that force using a trust to MIT
Kerberos realm.
This is a wrong type of trust. Unfortunately, when someone used MIT
Kerberos realm trust, there is no way to programmatically remote the
trust from freeIPA side. As result, we have to detect such situation and
report an error.
To do proper reporting, we need reuse some constants and trust type
names we use in IPA CLI/Web UI. These common components were moved to
a separate ipaserver/dcerpc_common.py module that is imported by both
ipaserver/plugins/trust.py and ipaserver/dcerpc.py.
Fixes https://pagure.io/freeipa/issue/7264
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Thierry Bordaz <tbordaz@redhat.com>
Replace python3-pyldap with python3-ldap.
Remove some old code for compatibility with very old python-ldap.
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
When definining a topology of a forest to be visible over a cross-forest
trust, we set *.<forest name> as all-catch top level name already.
This means that all DNS subdomains of the forest will already be matched
by this top level name (TLN). If we add more TLNs for subdomains, Active
Directory will respond with NT_STATUS_INVALID_PARAMETER.
Filter out all subdomains of the forest root domain. All other realm
domains will be added with explicit TLN records.
Also filter out single label domains. These aren't possible to add as
TLNs to Windows Server 2016 as it considers them incorrect. Given that
we do not allow single lable domains as part of freeIPA installs, this
is another layer of protection here.
Fixes https://pagure.io/freeipa/issue/6666
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Disable unbalanced-tuple-unpacking for RuntimeException thrown
by samba since this one should always contain two members.
https://pagure.io/freeipa/issue/6874
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
assess_dcerpc_exception was used in multiple places with a pre-step
which was rather common. Move this to one spot.
This also fixes pylint warning about unbalanced unpacking.
https://pagure.io/freeipa/issue/6874
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Make 'ipa trust-add' work under Python 3. One needs patches from
https://lists.samba.org/archive/samba-technical/2017-July/121746.html
to Samba too.
Since we haven't switched whole ipa server environment to Python 3 yet,
following packages need to be installed to make trust code working under
Python 3:
- python3-libsss_nss_idmap
- python3-sss
- python3-samba
- python3-mod_wsgi
Fixes: https://pagure.io/freeipa/issue/4985
Reviewed-By: Martin Basti <mbasti@redhat.com>
Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>
Remove logger arguments in all functions and logger attributes in all
objects, with the exception of API object logger, which is now deprecated.
Replace affected logger calls with module-level logger calls.
Reviewed-By: Martin Basti <mbasti@redhat.com>
Samba error code reporting changes from version to version but we also
did not provide proper input into DCE RPC error processing method we
have.
Unify error processing and add few more fallback entries.
With Samba 4.7 we'll have to change it again because error code
processing for Samba Python modules will change with introduction of
samba.ntstatus and samba.werror modules.
Note that this commit also changes a message returned for error code
-1073741772 (NT_STATUS_OBJECT_NOT_FOUND) because it is more general one.
Fixes https://pagure.io/freeipa/issue/6859
Reviewed-By: Martin Basti <mbasti@redhat.com>
Samba Python bindings provide samba.arcfour_encrypt(key, data). Instead
of implementing own wrapper, use Samba's.
In future Samba versions this wrapper will be FIPS 140-2 compatible.
Fixes https://pagure.io/freeipa/issue/6697
Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>
The framework will not have direct access to the keytab anymore.
This function was used in two places, to fetch the domain list and to
re-initialize the PAC when enabling or disabling a domain trust.
The domian list is normally fetched via oddjob anyway so this use is
not necesary anymore, and the MS-PAC re-initialization can be moved
later to oddjob if needed.
https://fedorahosted.org/freeipa/ticket/5959
Signed-off-by: Simo Sorce <simo@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
We do not want to generate runtime directories just because the packages
are installed, but only if the server is actually setup and run. Also this
will be needed later because we will create a user at install time and some
tmpfiles will need to be owned by this user.
As we are changing this code also rationalize the directory structure and
move it from the http rundir to the ipa specific rundir.
https://fedorahosted.org/freeipa/ticket/5959
Signed-off-by: Simo Sorce <simo@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
SHARE_DIR and PLUGIN_SHARE_DIR depend on ipaplatform.
Replace all uses of SHARE_DIR with paths.USR_SHARE_IPA_DIR and remove
both SHARE_DIR and PLUGIN_SHARE_DIR.
https://fedorahosted.org/freeipa/ticket/6474
Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>
Python 3 Samba bindings are not available yet. Let's silence the
warnings to make pylint pass under Python 3.
https://fedorahosted.org/freeipa/ticket/4985
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Martin Basti <mbasti@redhat.com>
* move IPAdmin methods to LDAPClient
* add extra arguments (cacert, sasl_nocanon) to LDAPClient.__init__()
* add host, port, _protocol to LDAPClient (parsed from ldap_uri)
* create get_ldap_uri() method to create ldap_uri from former
IPAdmin.__init__() arguments
* replace IPAdmin with LDAPClient + get_ldap_uri()
* remove ununsed function argument hostname from
enable_replication_version_checking()
https://fedorahosted.org/freeipa/ticket/6461
Reviewed-By: Martin Basti <mbasti@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
* Rename do_sasl_gssapi_bind to gssapi_bind
https://fedorahosted.org/freeipa/ticket/6461
Reviewed-By: Martin Basti <mbasti@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
Check for import errors with pylint to make sure new python package
dependencies are not overlooked.
https://fedorahosted.org/freeipa/ticket/6418
Reviewed-By: Petr Spacek <pspacek@redhat.com>
Reviewed-By: Martin Basti <mbasti@redhat.com>
The original approach with __path__ implemented
by 8f98fa1bd5 broke Pylint:
We decided to resort back to symlinks as it is easiest solution
which does not break pylint in weird ways.
This commit introduces configure --with-ipaplatform option.
https://fedorahosted.org/freeipa/ticket/6418
Reviewed-By: Lukas Slebodnik <lslebodn@redhat.com>
Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Unused variables may:
* make code less readable
* create dead code
* potentialy hide issues/errors
Enabled check should prevent to leave unused variable in code
Check is locally disabled for modules that fix is not clear or easy or have too many occurences of
unused variables
Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>
Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>
This allows for re-use of this method in cases where the caller can not or
wishes not to instantiate local Samba domain to retrieve information about
remote ones.
https://fedorahosted.org/freeipa/ticket/6057
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
When external trust is established, it is by definition is
non-transitive: it is not possible to obtain Kerberos tickets to any
service outside the trusted domain.
Reflect this reality by only accepting UPN suffixes from the external
trust -- since the trusted domain is a part of another forest and UPN
suffixes are forest-wide, there could be user accounts in the trusted
domain that use forest-wide UPN suffix but it will be impossible to
reach the forest root via the externally trusted domain.
Also, an argument to netr_DsRGetForestTrustInformation() has to be
either forest root domain name or None (NULL). Otherwise we'll get
an error as explained in MS-NRPC 3.5.4.7.5.
https://fedorahosted.org/freeipa/ticket/6021
Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>
For configuration where:
- AD example.com trusts IPA at ipa.example.com
- AD example.org trusts AD example.com
- a trust is tried to be established between ipa.example.com and
example.org,
there will be a trust topology conflict detected by example.org domain
controller because ipa.example.com DNS namespace overlaps with
example.com DNS namespace.
This type of trust topology conflict is documented in MS-ADTS 6.1.6.9.3.2
"Building Well-Formed msDS-TrustForestTrustInfo Message". A similar
conflict can arise for SID and NetBIOS namespaces. However, unlike SID
and NetBIOS namespaces, we can solve DNS namespace conflict
automatically if there are administrative credentials for example.org
available.
A manual sequence to solve the DNS namespace conflict is described in
https://msdn.microsoft.com/it-it/library/cc786254%28v=ws.10%29.aspx.
This sequence boils down to the following steps:
1. As an administrator of the example.org, you need to add an
exclusion entry for ipa.example.com in the properties of the trust to
example.com
2. Establish trust between ipa.example.com and example.org
It is important to add the exclusion entry before step 4 or there will
be conflict recorded which cannot be cleared easily right now due to a
combination of bugs in both IPA and Active Directory.
This patchset implements automated solution for the case when we have
access to the example.org's administrator credentials:
1. Attempt to establish trust and update trust topology information.
2. If trust topology conflict is detected as result of (1):
2.1. Fetch trust topology infromation for the conflicting forest
trust
2.2. Add exclusion entry to our domain to the trust topology obtained
in (2.1)
2.3. Update trust topology for the conflicting forest trust
3. Re-establish trust between ipa.example.com and example.org
We cannot do the same for shared secret trust and for external trust,
though:
1. For shared secret trust we don't have administrative credentials
in the forest reporting the conflict
2. For the external trust we cannot set topology information due to
MS-LSAD 3.1.4.7.16 because external trust is non-transitive by
definition and thus setting topology information will fail.
To test this logic one can use two Samba AD forests with FreeIPA
using a sub-domain of one of them.
Fixes: https://fedorahosted.org/freeipa/ticket/6076
Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>
Because Samba Python bindings provide long-named methods and constants,
sometimes it is impossible to fit into 80 columns without causing
damage to readability of the code. This patchset attempts to reduce
pep8 complaints to a minimum.
https://fedorahosted.org/freeipa/ticket/6076
Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>
The module is used only on the server, so there's no need to have it in
ipalib, which is shared by client and server.
https://fedorahosted.org/freeipa/ticket/5988
Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>
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>
