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can be taken out of it, so I decided to commit this in one lump. It changes
the passdb enumerating functions to use ldap paged results where possible. In
particular the samr calls querydispinfo, enumdomusers and friends have
undergone significant internal changes. I have tested this extensively with
rpcclient and a bit with usrmgr.exe. More tests and the merge to trunk will
follow later.
The code is based on a first implementation by Günther Deschner, but has
evolved quite a bit since then.
Volker
Could someone else please look at this patch, verifying that I did not break
the ldapsam:trusted = False fallback to the old behaviour? It works fine for
me, but you never know. You're certainly free to review the new code as well :-)
Thanks,
Volker
* make sure to apply the rights_mask and not just the saved
bits from the mask in access_check_samr_object()
* allow root to grant/revoke privileges (in addition to Domain
Admins) as suggested by Volker.
Tested machine joins from XP, 2K, and NT4 with and without
pre-existing machine trust accounts. Also tested basic file
operations using cmd.exe and explorer.exe after changing the
STANDARD_RIGHTS_WRITE_ACCESS bitmask.
* added SE_PRIV checks to access_check_samr_object() in order
to deal with the run-time security descriptor and their
interaction with user rights
* Reordered original patch in _samr_set_userinfo[2] to still
allow root/administrative password changes for users and machines.
Does automated migration from account_policy.tdb v1 and v2 and offers a
pdbedit-Migration interface. Jerry, please feel free to revert that if
you have other plans.
Guenther
* define some const SE_PRIV structure for use when
you need a SE_PRIV* to a privilege
* fix an annoying compiler warngin in smbfilter.c
* translate SIDs to names in 'net rpc rights list accounts'
* fix a seg fault in cli_lsa_enum_account_rights caused by
me forgetting the precedence of * vs. []
This allows the ldap-backend to search much more effeciently. Machines
will be searched in the ldap_machine_suffix and users in the
ldap_users_suffix. (Note that we already use the ldap_group_suffix in
ldapsam_setsamgrent for quite some time).
Using the specific ldap-bases becomes notably important in large
domains: On my testmachine "net rpc trustdom list" has to search through
40k accounts just to list 3 interdomain-trust-accounts, similiar effects
show up the non-user query_dispinfo-calls, etc.
Also renamed all_machines to only_machines in load_sampwd_entries()
since that reflects better what is really meant.
Guenther
* rewrote the tdb layout of privilege records in account_pol.tdb
(allow for 128 bits instead of 32 bit flags)
* migrated to using SE_PRIV structure instead of the PRIVILEGE_SET
structure. The latter is now used for parsing routines mainly.
Still need to incorporate some client support into 'net' so
for setting privileges. And make use of the SeAddUserPrivilege
right.
(based on Simo's code in trunk). Rewritten with the
following changes:
* privilege set is based on a 32-bit mask instead of strings
(plans are to extend this to a 64 or 128-bit mask before
the next 3.0.11preX release).
* Remove the privilege code from the passdb API
(replication to come later)
* Only support the minimum amount of privileges that make
sense.
* Rewrite the domain join checks to use the SeMachineAccountPrivilege
instead of the 'is a member of "Domain Admins"?' check that started
all this.
Still todo:
* Utilize the SePrintOperatorPrivilege in addition to the 'printer admin'
parameter
* Utilize the SeAddUserPrivilege for adding users and groups
* Fix some of the hard coded _lsa_*() calls
* Start work on enough of SAM replication to get privileges from one
Samba DC to another.
* Come up with some management tool for manipultaing privileges
instead of user manager since it is buggy when run on a 2k client
(haven't tried xp). Works ok on NT4.
set the value "forcibly disconnect remote users from server when logon
hours expire" to "no", instead take the value from our account-policy
storage.
Guenther
based on samba4-idl.
This saves us an enormous amount of totally unnecessary ldap-traffic
when several hundreds of winbind-daemons query a Samba3 DC just to get
the fake SAM-sequence-number (time(NULL)) by enumerating all users, all
groups and all aliases when query-dom-info level 2 is used.
Note that we apparently never get the sequence number right (we parse a
uint32, although it's a uint64, at least in samba4 idl). For the time
being, I would propose to stay with that behaviour.
Guenther
comment string and not an unknown 12 byte structure...
Found after abartlet's smbtorture extended this string to
"Tortured by Samba4: Fri Nov 26 15:40:18 2004 CET"
;-))
Volker
abartlet, I'd like to ask you to take a severe look at this!
We have solved the problem to find the global groups a user is in twice: Once
in auth_util.c and another time for the corresponding samr call. The attached
patch unifies these and sends them through the passdb backend (new function
pdb_enum_group_memberships). Thus it gives pdb_ldap.c the chance to further
optimize the corresponding call if the samba and posix accounts are unified by
issuing a specialized ldap query.
The parameter to activate this ldapsam behaviour is
ldapsam:trusted = yes
Volker
not exactly match what you would expect.
XP workstations during login actually do this, so we should better become a
bit more correct. The LDAP query issued is not really fully optimal, but it is
a lot faster and more correct than what was there before. The change in
passdb.h makes it possible that queryuseraliases is done with a single ldap
query.
Volker
