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factored-out nss_winbind.[ch]. I took tridge's public domain license comment
for the nss_winbind.[ch].
This is probably not the last word on that extension, but as it is quite
non-intrusive to the main samba code, I would like to give it a start.
Volker
The reason for this are:
(a) the set_dc_type_and_flags() cannot tell the different
between connecting to an NT4 domain and an NT4 BDC
of a mixed mode domain.
(b) the connection management for the rpc backend only
provides on named pipe per cli_state. So it is possible
to connect to an NT4 BDC for netlogon and an AD mixed mode
DC for lsarpc. RPC is the lowest common demonimator here.
(c) Issue with the sequence number value between the
highestCommittedUSN LDAP attribute and the seq_num returned
via RPC.
We will revisit this later, but the changes need to make this
work right now are too broad and risky.
domains, this patch ensures that we always use the ADS backend when
security=ADS, and the remote server is capable.
The routines used for this behaviour have been upgraded to modern Samba
codeing standards.
This is a change in behaviour for mixed mode domains, and if the trusted
domain cannot be reached with our current krb5.conf file, we will show
that domain as disconnected.
This is in line with existing behaviour for native mode domains, and for
our primary domain.
As a consequence of testing this patch, I found that our kerberos error
handling was well below par - we would often throw away useful error
values. These changes move more routines to ADS_STATUS to return
kerberos errors.
Also found when valgrinding the setup, fix a few memory leaks.
While sniffing the resultant connections, I noticed we would query our
list of trusted domains twice - so I have reworked some of the code to
avoid that.
Andrew Bartlett
While machine accounts cannot use an NTLM login (NT4 style), they are
otherwise full and valid members of the domain, and expect to be able to
use kerberos to connect to CIFS servers.
This means that the LocalSystem account, used by various services, can
perform things like backups, without the admin needing to enter further
passwords.
This particular issue (bug 722) has started to come up a lot on the lists.
I have only enabled it for winbindd-based systems, as the macros use use
to call the 'add user script' will strip the $ from the username for
security reasons.
Andrew Bartlett
DNS names (realms) from NetBIOS domain names.
Until now, we would experience delays as we broadcast lookups for DNS names
onto the local network segments.
Now if DNS comes back negative, we fall straight back to looking up the
short name.
Andrew Bartlett
rpc_parse/parse_lsa.c:
nsswitch/winbindd_rpc.c:
nsswitch/winbindd.h:
- Add const
libads/ads_ldap.c:
- Cleanup function for use
nsswitch/winbindd_ads.c:
- Use new utility function ads_sid_to_dn
- Don't search for 'dn=', rather call the ads_search_retry_dn()
nsswitch/winbindd_ads.c:
include/rpc_ds.h:
rpc_client/cli_ds.c:
- Fixup braindamage in cli_ds_enum_domain_trusts():
- This function was returning a UNISTR2 up to the caller, and
was doing nasty (invalid, per valgrind) things with memcpy()
- Create a new structure that represents this informaiton in a useful way
and use talloc.
Andrew Bartlett
This introduces range retrieval of ADS attributes.
VL rewrote most of Gnther's patch, partly to remove code duplication and
partly to get the retrieval of members in one rush, not interrupted by the
lookups for the DN.
I rewrote that patch, to ensure that we can keep an eye on the USN
(sequence number) of the entry - this allows us to ensure the read was
atomic.
In particular, the range retrieval is now generic, for strings. It
could easily be made generic for any attribute type, if need be.
Andrew Bartlett
session setup. After talking to jht and abartlet I made this unconditional, no
additional parameter.
Jerry: This is a change in behaviour, but I think it is necessary.
Volker
This introduces range retrieval of ADS attributes.
I've rewritten most of Gnther's patch, partly to remove code duplication and
partly to get the retrieval of members in one rush, not interrupted by the
lookups for the DN.
Andrew, you told me that you would like to see a check whether the AD sequence
number is the same before and after the retrieval to achieve atomicity. This
would be trivial to add, but I'm not sure that we want this, as this adds two
roundtrips to every membership query. We can not know before the first query
whether we get additional range values, and at that point it's too late to ask
for the USN.
Tested with a group of 4000 members along with lots of small groups.
Volker
domains (in particular, the domain of the current machine, if it is not a PDC)
By changing the error codes, we now return values that PAM can correctly
use for better stacking of PAM modules - in particular of the password change
module.
This allows pam_winbind to co-exist with other pam modules for password changes.
Andrew Bartlett
our primary domain - new domains are added to the front of the list. :-(
Use a much more reliable 'flag test' instead. (note: changes winbind structures, make clean).
Andrew Bartlett
- Fill in the 'backup' idea of a domain, if the DC didn't supply one. This
doesn't seem to occour in reality, hence why we missed the typo.
lib/charcnv.c:
lib/smbldap.c:
libads/ldap.c:
libsmb/libsmbclient.c:
printing/nt_printing.c:
- all the callers to pull_utf8_allocate() pass a char ** as the first
parammeter, so don't make them all cast it to a void **
nsswitch/winbind_util.c:
- Allow for a more 'correct' view of when usernames should be qualified
in winbindd. If we are a PDC, or have 'winbind trusted domains only',
then for the authentication returns stip the domain portion.
- Fix valgrind warning about use of free()ed name when looking up our
local domain. lp_workgroup() is maniplated inside a procedure that
uses it's former value. Instead, use the fact that our local domain is
always the first in the list.
Andrew Bartlett
Instead of returning a name in DOMAIN\user format, we now return it in the
same way that nsswtich does - following the rules of 'winbind use default
domain', in the correct case and with the correct seperator.
This should help sites who are using Squid or the new SASL code I'm working
on, to match back to their unix usernames.
Andrew Bartlett
- NTLM2 support in the server
- KEY_EXCH support in the server
- variable length session keys.
In detail:
- NTLM2 is an extension of NTLMv1, that is compatible with existing
domain controllers (unlike NTLMv2, which requires a DC upgrade).
* This is known as 'NTLMv2 session security' *
(This is not yet implemented on the RPC pipes however, so there may
well still be issues for PDC setups, particuarly around password
changes. We do not fully understand the sign/seal implications of
NTLM2 on RPC pipes.)
This requires modifications to our authentication subsystem, as we
must handle the 'challege' input into the challenge-response algorithm
being changed. This also needs to be turned off for
'security=server', which does not support this.
- KEY_EXCH is another 'security' mechanism, whereby the session key
actually used by the server is sent by the client, rather than being
the shared-secret directly or indirectly.
- As both these methods change the session key, the auth subsystem
needed to be changed, to 'override' session keys provided by the
backend.
- There has also been a major overhaul of the NTLMSSP subsystem, to merge the 'client' and 'server' functions, so they both operate on a single structure. This should help the SPNEGO implementation.
- The 'names blob' in NTLMSSP is always in unicode - never in ascii.
Don't make an ascii version ever.
- The other big change is to allow variable length session keys. We
have always assumed that session keys are 16 bytes long - and padded
to this length if shorter. However, Kerberos session keys are 8 bytes
long, when the krb5 login uses DES.
* This fix allows SMB signging on machines not yet running MIT KRB5 1.3.1. *
- Add better DEBUG() messages to ntlm_auth, warning administrators of
misconfigurations that prevent access to the privileged pipe. This
should help reduce some of the 'it just doesn't work' issues.
- Fix data_blob_talloc() to behave the same way data_blob() does when
passed a NULL data pointer. (just allocate)
REMEMBER to make clean after this commit - I have changed plenty of data structures...
winbind functions to be accessed via NSS. This provides a much cleaner
way for applications that need (for example) to provide name->sid
mappings to do this via NSS rather than having to know the winbindd
pipe protocol (as this might change).
This patch also adds a varient of the winbindd_getgroups() call called
winbindd_getusersids() that provides direct SID->SIDs listing of a
users supplementary groups. This is enough to allow non-Samba
applications to do ACL checking.
A test program for the new functionality will be committed shortly.
I also added the 'wbinfo --user-sids' option to expose the new
function in wbinfo.
