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and the maximum amount of user data that may be fitted into that.
This is used in the new SASL code, to correctly honour SASL buffer sizes.
Andrew Bartlett
this isn't supported, fallback to NTLM.
Also, where we get a failure as 'logon failure', try and do a '3
tries' for the password, like we already do for CIFS. (Incomplete:
needs a mapping between RPC errors and the logon failure NTSTATUS).
Because we don't yet support Kerberos sign/seal to win2k3 SP1 for
DCE/RPC, disable this (causing SPNEGO to negotiate NTLM) when kerberos
isn't demanded.
Andrew Bartlett
We do need the gsskrb5_get_initiator_subkey() routine. But we should
ensure that we do always get a valid key, to prevent any segfaults.
Without this code, we get a different session key compared with
Win2k3, and so kerberised smb signing fails.
Andrew Bartlett
responses...
Also trust OpenLDAP to be pedantic about it, breaking connections to AD.
In any case, we now get this 'right' (by nasty overloading hacks, but
hey), and we can now use system-supplied OpenLDAP libs and SASL/GSSAPI
to talk to Samba4.
Andrew Bartlett
GSSAPI differs from GSS-SPNEGO in an additional 3 packets, negotiating
a buffer size and what integrity protection/privacy should be used.
I worked off draft-ietf-sasl-gssapi-03, and this works against Win2k3.
I'm doing this in the hope that Apple clients as well as SASL-based
LDAP tools may get a bit further.
I still can't get ldapsearch to work, it fails with the ever-helpful
'Local error'.
Andrew Bartlett
From here we can add tests to Samba for kerberos, forcing it on and
off. In the process, I also remove the dependency of credentials on
GENSEC.
This also picks up on the idea of bringing 'set_boolean' into general
code from jpeach's cifsdd patch.
Andrew Bartlett
gsskrb5_get_initiator_subkey() routine is bougs. We can indeed use
gss_krb5_get_subkey().
This is fortunate, as there was a segfault bug in 'initiator' version.
Andrew Bartlett
This merges Samba4 up to current lorikeet-heimdal, which includes a
replacement for some Samba-specific hacks.
In particular, the credentials system now supplies GSS client and
server credentials. These are imported into GSS with
gss_krb5_import_creds(). Unfortunetly this can't take an MEMORY
keytab, so we now create a FILE based keytab as provision and join
time.
Because the keytab is now created in advance, we don't spend .4s at
negprot doing sha1 s2k calls. Also, because the keytab is read in
real time, any change in the server key will be correctly picked up by
the the krb5 code.
To mark entries in the secrets which should be exported to a keytab,
there is a new kerberosSecret objectClass. The new routine
cli_credentials_update_all_keytabs() searches for these, and updates
the keytabs.
This is called in the provision.js via the ejs wrapper
credentials_update_all_keytabs().
We can now (in theory) use a system-provided /etc/krb5.keytab, if
krb5Keytab: FILE:/etc/krb5.keytab
is added to the secrets.ldb record. By default the attribute
privateKeytab: secrets.keytab
is set, pointing to allow the whole private directory to be moved
without breaking the internal links.
We now put the PAC in the AS-REP, so that the client has it in the
TGT. We then validate it (and re-sign it) on a TGS-REQ, ie when the
client wants a ticket.
This should also allow us to interop with windows KDCs.
If we get an invalid PAC at the TGS stage, we just drop it.
I'm slowly trying to move the application logic out of hdb-ldb.c, and
back in with the rest of Samba's auth system, for consistancy. This
continues that trend.
Andrew Bartlett
determining a mechanism to use.
Currently it doesn't to fallbacks like SPNEGO does, but this could be
added (to GENSEC, not to here).
This also adds a new function to GENSEC, which returns a list of SASL
names in our preference order (currently determined by the build
system of all things...).
Also make the similar function used for OIDs in SPNEGO do the same.
This is all a very long-winded way of moving from a hard-coded NTLM to
GSS-SPNEGO in our SASL client...
Andrew Bartlett
DCE_STYLE modified version, and add parametric options to control
delegation.
It turns out the only remaining issue is sending delegated credentials
to a windows server, probably due to the bug lha mentions in his blog
(using the wrong key).
If I turn delgation on in smbclient, but off in smbd, I can proxy a
cifs session.
I can't wait till Heimdal 0.8, so I'll see if I can figure out the fix
myself :-)
Andrew Bartlett
of the gsskrb5_acquire_cred hack.
Add support for delegated credentials into the auth and credentials
subsystem, and specifically into gensec_gssapi.
Add the CIFS NTVFS handler as a consumer of delegated credentials,
when no user/domain/password is specified.
Andrew Bartlett
than doing ASN.1 parsing in Samba.
Also use the API function for getting a client from a ticket, rather
than just digging in the structure.
Andrew Bartlett
I'm sure this will not be the final resting place, but it will do for
now.
Use the cracknames code in auth/ for creating a server_info given a
principal name only (should avoid assumtions about spliting a
user@realm principal).
Andrew Bartlett
authentication. This pulls the creating of the keytab back to the
credentials code, and removes the special case of 'use keberos keytab
= yes' for now.
This allows (and requires) the callers to specify the credentials for
the server credentails to GENSEC. This allows kpasswdd (soon to be
added) to use a different set of kerberos credentials.
The 'use kerberos keytab' code will be moved into the credentials
layer, as the layers below now expect a keytab.
We also now allow for the old secret to be stored into the
credentials, allowing service password changes.
Andrew Bartlett
-Udomain\\user.
This will probably break in a few configurations, so please let me
know. I'll also work to have a way to inhibit kerberos/ntlmssp, as
this removes -k.
Andrew Bartlett
Samba to use the target principal name supplied in the mechTokenMIC of
an SPNEGO negTokenInit.
This isn't a great idea for security reasons, but is how Samba3 behaves,
and allows kerberos to function more often in some environments. It is
only available for CIFS session setups, due to the ordering of the
exchange.
Andrew Bartlett
data to be signed/sealed. We can use this to split the data from the
signature portion of the resultant wrapped packet.
This required merging the gsskrb5_wrap_size patch from
lorikeet-heimdal, and fixes AES encrption issues on DCE/RPC (we no
longer use a static 45 byte value).
This fixes one of the krb5 issues in my list.
Andrew Bartlett
with an aim to make the code simpiler and more correct.
Gone is the old (since the very early Samba 3.0 krb5 days) 'iterate over
all keytypes)' code in gensec_krb5, we now follow the approach used in
gensec_gssapi, and use a keytab.
I have also done a lot of work in the GSSAPI code, to try and reduce
the diff between us and upstream heimdal. It was becoming hard to
track patches in this code, and I also want this patch (the DCE_STYLE
support) to be in a 'manageable' state for when lha considers it for
merging. (metze assures me it still has memory leak problems, but
I've started to address some of that).
This patch also includes a simple update of other code to current
heimdal, as well as changes we need for better PAC verification.
On the PAC side of things we now match windows member servers by
checking the name and authtime on an incoming PAC. Not generating these
right was the cause of the PAC pain, and so now both the main code and
torture test validate this behaviour.
One thing doesn't work with this patch:
- the sealing of RPC pipes with kerberos, Samba -> Samba seems
broken. I'm pretty sure this is related to AES, and the need to break
apart the gss_wrap interface.
Andrew Bartlett
'MEMORY_WILDCARD' keytab type. (part of this checking is in effect a
merge from lorikeet-heimdal, where I removed this)
This is achieved by correctly using the GSSAPI gsskrb5_acquire_cred()
function, as this allows us to specify the target principal, regardless
of which alias the client may use.
This patch also tries to simplify some principal handling and fixes some
error cases.
Posted to samba-technical, reviewed by metze, and looked over by lha on IRC.
Andrew Bartlett
Kerberos CCACHE into the system.
This again allows the use of the system ccache when no username is
specified, and brings more code in common between gensec_krb5 and
gensec_gssapi.
It also has a side-effect that may (or may not) be expected: If there
is a ccache, even if it is not used (perhaps the remote server didn't
want kerberos), it will change the default username.
Andrew Bartlett
caused me pain (and covourty warnings).
Simply gensec_gssapi to assume the properties of lorikeet-heimdal,
rather than having #ifdef around critical features. This simplifies
the code rather a lot.
Andrew Bartlett
If we ever get problems with the kerberos code, it should show up as a
different signature in this PAC.
This involved returning more data from the pac functions, so changed
some callers and split up some functions.
Andrew Bartlett
