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length, use the amount the wapped message expanded by.
This works, because GSSAPI doesn't do AEAD (signing of headers), and
so changing the signature length after the fact is valid.
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
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
event_context for the socket_connect() call, so that when things that
use dcerpc are running alongside anything else it doesn't block the
whole process during a connect.
Then of course I needed to change any code that created a dcerpc
connection (such as the auth code) to also take an event context, and
anything that called that and so on .... thus the size of the patch.
There were 3 places where I punted:
- abartlet wanted me to add a gensec_set_event_context() call
instead of adding it to the gensec init calls. Andrew, my
apologies for not doing this. I didn't do it as adding a new
parameter allowed me to catch all the callers with the
compiler. Now that its done, we could go back and use
gensec_set_event_context()
- the ejs code calls auth initialisation, which means it should pass
in the event context from the web server. I punted on that. Needs fixing.
- I used a NULL event context in dcom_get_pipe(). This is equivalent
to what we did already, but should be fixed to use a callers event
context. Jelmer, can you think of a clean way to do that?
I also cleaned up a couple of things:
- libnet_context_destroy() makes no sense. I removed it.
- removed some unused vars in various places
server code. This fixes a number of memory leaks I found when testing
with valgrind and smbtorture, as the cascading effect of a
talloc_free() ensures that anything derived from the top level object
is destroyed on disconnect.
NTLM sign
NTLM sign+seal
NTLM2 sign
NTLM2 sign+seal
and all of the above both with and without key exchange
the NTLM2 seal case is ugly and involves an extra data copy, which
some API changes in gensec or the ndr layer might avoid in future.
'authenticated' connections.
Fix kerberos session key issues - we need to call the
routine for extracting the session key, not just read the cache.
Andrew Bartlett
This means that 'require NTLMv2 session security' now works for RPC
pipe signing. We don't yet have sealing, but it can't be much further.
This is almost all tridge's code, munged into a form that can work
with the GENSEC API.
This commit also includes more lsakey fixes - that key is used for all
DCE-RPC level authenticated connections, even over CIFS/ncacn_np.
No doubt I missed something, but I'm going to get some sleep :-)
Andrew Bartlett
The bug (found by tridge) is that Win2k3 is being tighter about the
NTLMSSP flags. If we don't negotiate sealing, we can't use it.
We now have a way to indicate to the GENSEC implementation mechanisms
what things we want for a connection.
Andrew Bartlett
This implements gensec for Samba's server side, and brings gensec up
to the standards of a full subsystem.
This means that use of the subsystem is by gensec_* functions, not
function pointers in structures (this is internal). This causes
changes in all the existing gensec users.
Our RPC server no longer contains it's own generalised security
scheme, and now calls gensec directly.
Gensec has also taken over the role of auth/auth_ntlmssp.c
An important part of gensec, is the output of the 'session_info'
struct. This is now reference counted, so that we can correctly free
it when a pipe is closed, no matter if it was inherited, or created by
per-pipe authentication.
The schannel code is reworked, to be in the same file for client and
server.
ntlm_auth is reworked to use gensec.
The major problem with this code is the way it relies on subsystem
auto-initialisation. The primary reason for this commit now.is to
allow these problems to be looked at, and fixed.
There are problems with the new code:
- I've tested it with smbtorture, but currently don't have VMware and
valgrind working (this I'll fix soon).
- The SPNEGO code is client-only at this point.
- We still do not do kerberos.
Andrew Bartlett
I made it much more generic, and we should be able to add a
module interface to this code, so that other DCERPC_AUTH types can be added
via modules...
metze
names rather than our crazy naming scheme. So DES is now called
des_crypt() rather than smbhash()
- added the code from the solution of the ADS crypto challenge that
allows Samba to correctly handle a 128 bit session key in all of the
netr_ServerAuthenticateX() varients. A huge thanks to Luke Howard
from PADL for solving this one!
- restructured the server side rpc authentication to allow for other
than NTLMSSP sign and seal. This commit just adds the structure, the
next commit will add schannel server side support.
- added 128 bit session key support to our client side code, and
testing against w2k3 with smbtorture. Works well.
Samba's NTLMSSP code is now fully talloc based, which should go a long
way to cleaning up the memory leaks in this code. This also avoids a
lot of extra copies of data, as we now allocate the 'return' blobs on
a caller-supplied context.
I have also been doing a lot of work towards NTLM2 signing and
sealing. I have this working for sealing, but not for the verifier
(MD5 integrity check on the stream) which is still incorrect.
(I can aim a rpcecho sinkdata from a Win2k3 box to my server, and the
data arrives intact, but the signature check fails. It does however
match the test values I have...).
The new torture test is cludged in - when we get a unit test suite
back, I'll happliy put it in the 'right' place....
Andrew Bartlett
