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Each attribute we request from LDB comes with a small cost, so don't
lookup any more than we must for the (very) frequent krbtgt lookup
case. Similarly, we don't need to build a PAC for a server (as a
target), so don't ask for the PAC attributes here either.
Andrew Bartlett
The previous code only allowed an KRB5_NT_ENTERPRISE name (an e-mail
list user principal name) in an AS-REQ. Evidence from the wild
(Win2k8 reportadely) indicates that this is instead valid for all
types of requests.
While this is now handled in heimdal/kdc/misc.c, a flag is now defined
in Heimdal's hdb so that we can take over this handling in future (once we start
using a system Heimdal, and if we find out there is more to be done
here).
Andrew Bartlett
The function LDB_lookup_principal() has been eliminated, and it's
contents spread back to it's callers. Removing the abstraction makes
the code clearer.
Also ensure we never pass unescaped user input to a LDB search
function.
Andrew Bartlett
This requires a rework on Heimdal's windc plugin layer, as we want
full control over what tickets Heimdal will issue. (In particular, in
case our requirements become more complex in future).
The original problem was that Heimdal's check would permit the ticket,
but Samba would then deny it, not knowing it was for kadmin/changepw
Also (in hdb-samba4) be a bit more careful on what entries we will
make the 'change_pw' service mark that this depends on.
Andrew Bartlett
Also including the supporting changes required to pass make test
A number of heimdal functions and constants have changed since we last
imported a tree (for the better, but inconvenient for us).
Andrew Bartlett
Logs showed that every SAM authentication was causing a non-indexed
ldb search for member=XXX. This was previously indexed in Samba4, but
since we switched to using the indexes from the full AD schema it now
isn't.
The fix is to use the extended DN operations to allow us to ask the
server for the memberOf attribute instead, with with the SIDs attached
to the result. This also means one less search on every
authentication.
The patch is made more complex by the fact that some common routines
use the result of these user searches, so we had to update all
searches that uses user_attrs and those common routines to make sure
they all returned a ldb_message with a memberOf filled in and the SIDs
attached.
It turns out (seen in MS-SAMR 3.1.1.7.1 for example) that the primary
way the krbtgt account is recognised as special is that RID. This
should fix issues such as 'password expired' on the kpasswd service.
Andrew Bartlett
A single AD server can only host a single domain, so don't stuff about
with looking up our crossRef record in the cn=Partitions container.
We instead trust that lp_realm() and lp_workgroup() works correctly.
Andrew Bartlett
When starting GENSEC on the server, the auth subsystem context must be
passed in, which now includes function pointers to the key elements.
This should (when the other dependencies are fixed up) allow GENSEC to
exist as a client or server library without bundling in too much of
our server code.
Andrew Bartlett
This uses a virtual attribute 'clearTextPassword' (name chosen to
match references in MS-SAMR) that contains the length-limited blob
containing an allegidly UTF16 password. This ensures we do no
validation or filtering of the password before we get a chance to MD4
it. We can then do the required munging into UTF8, and in future
implement the rules Microsoft has provided us with for invalid inputs.
All layers in the process now deal with the strings as length-limited
inputs, incluing the krb5 string2key calls.
This commit also includes a small change to samdb_result_passwords()
to ensure that LM passwords are not returned to the application logic
if LM authentication is disabled.
The objectClass module has been modified to allow the
clearTextPassword attribute to pass down the stack.
Andrew Bartlett
This avoids one more custom patch to the Heimdal code, and provides a
more standard way to produce hdb plugins in future.
I've renamed from hdb_ldb to hdb_samba4 as it really is not generic
ldb.
Andrew Bartlett
This is implemented by means of a message to the KDC, to avoid having
to link most of the KDC into netlogon.
Andrew Bartlett
(This used to be commit 82fcd7941f)
This uses Heimdal's PAC parsing code in the:
- LOCAL-PAC test
- gensec_gssapi server
- KDC (where is was already used, the support code refactored from here)
In addition, the service and KDC checksums are recorded in the struct
auth_serversupplied_info, allowing them to be extracted for validation
across NETLOGON.
Andrew Bartlett
(This used to be commit 418b440a7b)
