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the schannel code, but I've included that anyway. :-)
This patch revives the client-side NTLMSSP support for RPC named pipes
in Samba, and cleans up the client and server schannel code. The use of the
new code is enabled by the 'sign', 'seal' and 'schannel' commands in
rpcclient.
The aim was to prove that our separate NTLMSSP client library actually
implements NTLMSSP signing and sealing as per Microsoft's NTLMv1 implementation,
in the hope that knowing this will assist us in correctly implementing
NTLMSSP signing for SMB packets. (Still not yet functional)
This patch replaces the NTLMSSP implementation in rpc_client/cli_pipe.c with
calls to libsmb/ntlmssp.c. In the process, we have gained the ability to
use the more secure NT password, and the ability to sign-only, instead of
having to seal the pipe connection. (Previously we were limited to sealing,
and could only use the LM-password derived key).
Our new client-side NTLMSSP code also needed alteration to cope with our
comparatively simple server-side implementation. A future step is to replace
it with calls to the same NTLMSSP library.
Also included in this patch is the schannel 'sign only' patch I submitted to
the team earlier. While not enabled (and not functional, at this stage) the
work in this patch makes the code paths *much* easier to follow. I have also
included similar hooks in rpccleint to allow the use of schannel on *any* pipe.
rpcclient now defaults to not using schannel (or any other extra per-pipe
authenticiation) for any connection. The 'schannel' command enables schannel
for all pipes until disabled.
This code is also much more secure than the previous code, as changes to our
cli_pipe routines ensure that the authentication footer cannot be removed
by an attacker, and more error states are correctly handled.
(The same needs to be done to our server)
Andrew Bartlett
It can itself determine the length of the string it has to
transfer. Andrew B., could you take a look at the length calculation?
Is that safe?
Thanks,
Volker
discovered that our reply is short by 4 bytes since day 1 of this code.
Added a decode function to rpcclient too.
splitted the STRING2 fields filling while trying to understand the win9x
userlist bug. (didn't fix the bug, but the reply looks closer to NT).
J.F.
for setlinebuf which apparantly doesn't exist on HPUX 11.
include/byteorder.h:
rpc_parse/parse_prs.c:
Ding Dong the witch is dead ! :-). Ok, I'm happy 'cos I've finally deleted
all the *HORRIBLE* DBG_RW_XXX and RW_XXX macros from include/byteorder.h.
They were macros that included macros that had conditional macros included.
No one understood them (they were the cause of most of the bigendian issue
bugs). Finally, I went into parse_prs.c and inlined all of that stuff with
regular function calls. They're understandable, they're easy to edit and
they don't include macros !
JF - please look at the one comment I added (JF PLEASE CHECK). I have
tested this partly with IRIX (a bigendian system) running with AS/U on
a Solaris box in SGI's lab, and I've also confirmed these new changes
work with W2K (vmware) but there may be the odd bug lurking. Herb, if
you could re-checkout and test again with this code that would help.
Extra. Fixed bug spotted by the sharp eyes of JF - big endian unicode
packet would cause a early truncate of string parsing as we were checking for a char *
0, not a uint16 * 0.
Jeremy.
We were reading the endainness in the RPC header and then never propagating
it to the internal parse_structs used to parse the data.
Also removed the "align" argument to prs_init as it was *always* set to
4, and if needed can be set differently on a case by case basis.
Now ready for AS/U testing when Herb gets it set up :-).
Jeremy.
rpc_parse/parse_dfs.c: Had to add buffer overrun checking ! HOW DID THIS GET IN HERE !
rpc_parse/parse_prs.c: Ensure prs_alloc_mem does a memset of zero before returning.
Jeremy.
rewrote unistr2_to_ascii() to correct a bug seen on SGI boxes.
rpc_parse/parse_misc.c:
rpc_parse/parse_prs.c:
rewrote of BUFFER5 handling to NOT byteswap when it was already in
network byte order.
rpc_parse/parse_samr.c:
cleanup of samr_io_q_lookup_domain(), remove the over-parsing by 2
bytes.
rpc_server/srv_lsa.c:
UNISTR2 strings need to be NULL terminated to pleased W2K.
rpc_server/srv_spoolss_nt.c:
use snprintf instead of safe_strcpy as we want the string
truncated at 32 chars.
That should fix SUN and SGI box not able to act as printserver and the
problem with joining from a W2K wks.
J.F.
the trust domain list reply on netlogon pipe was wrong, interim hack until
we have full trust relationships.
changed some unistr2 to parse the ending NULL char.
added a prs_align_needed() function. much like a prs_align but with a
condition. needed for the unistr2 parsing.
J.F.
fix for the Win9x printer drivers.
Changed command names to add "command" string on the end for some consistancy
with the other scripting commands.
Added '%P' option to tdbpack/unpack to store long comment string.
Made port name be "Samba Printer Port" if no enum port script given.
Fixed prs_uint32_pre code to cope with null args.
Jeremy.
in the RPC code. This change was prompted by trying to save a long (>256)
character comment in the printer properties page.
The new system associates a TALLOC_CTX with the pipe struct, and frees
the pool on return of a complete PDU.
A global TALLOC_CTX is used for the odd buffer allocated in the BUFFERxx
code, and is freed in the main loop.
This code works with insure, and seems to be free of memory leaks and
crashes (so far) but there are probably the occasional problem with
code that uses UNISTRxx structs on the stack and expects them to contain
storage without doing a init_unistrXX().
This means that rpcclient will probably be horribly broken.
A TALLOC_CTX also needed associating with the struct cli_state also,
to make the prs_xx code there work.
The main interface change is the addition of a TALLOC_CTX to the
prs_init calls - used for dynamic allocation in the prs_XXX calls.
Now this is in place it should make dynamic allocation of all RPC
memory on unmarshall *much* easier to fix.
Jeremy.
- changed the default forms flag to 2
- all short architecture name are uppercased
- get_short_archi() is now case unsensitive
- the drivers TDB is indexed by archi/version/name
- implemented code to move drivers from the upload area to the download
area. Someone else need to look at that code.
- don't return anymore a default driver if it doesn't exist in the TDB.
Instead return an error.
- cleaned prs_unistr.
- #ifdef out jeremy's new SD parsing in printer_info_2
- removed the unused MANGLE_CODE
- #ifdef out the security checking in update_printer() as it doesn't work
for me.
Zap your ntdrivers.tdb, it won't work anymore.
J.F.
rpc_parse/parse_spoolss.c: Fixed the security descriptor marshalling in a INFO_2 struct.
for some reason SD's should be done inline after the info2, not
as the last buffer marshall.
rpc_server/srv_spoolss_nt.c: Removed extraneous ()'s.
Jeremy.
