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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
This kills off the offending code in smbpasswd -j -Uab%c
In the process we have changed from unsing compelatly random passwords
to random, 15 char ascii strings. While this does produce a decrese in
entropy, it is still vastly greater than we need, considering the application.
In the meantime this allows us to actually *type* the machine account
password duruign debugging.
This code also adds a 'check' step to the join, confirming that the
stored password does indeed do somthing of value :-)
Andrew Bartlett
This commit gets rid of all our old codepage handling and replaces it with
iconv. All internal strings in Samba are now in "unix" charset, which may
be multi-byte. See internals.doc and my posting to samba-technical for
a more complete explanation.
back to working order. The main change is that the cli_*() RPC
functions from libsmb/*.c now should accept a struct cli_state*.
The reason for this is that rpcclient should establish the
connection to the server at startup so that it is not necessary
to keep the clear test or password hash in memory for each command.
enumports and enumprinters now works as well. lsa* functions
have been tested. SAMR calls may or may not work (one of the core
dumps I know), but it compiles :-)
jerry
semi-connection and a rpcclient prompt, but no functionality there yet.
Will be a few more days on that.
These files changed only with the addition of some support functions
from TNG
--jerry
libsmb/clilist.c:
rpc_server/srv_spoolss_nt.c:
smbd/trans2.c: Changed unistr_to_ascii to unistr_to_dos - do codepage conversion.
msdfs/msdfs.c: Removed stub unistr_to_dos.
libsmb/pwd_cache.c: Removed obfuscation functions as they don't do anything and
don't add any security.
Jeremy.
moved smb-agent over to a single-process model instead of fork()
in order to reuse client connections. except, of course, you
can't do a select() on the same socket connections! argh!
ideas from ssh-agent.
the intent is to be able to share smb sessions using cli_net_use_add()
across multiple processes, where one process knows the target server
name, user name and domain, but not the smb password.
from previous lsaquery command. over-ridden from DOMAIN\username
2) initialisation of cli_state is a little more specific: sets use_ntlmv2
to Auto. this can always be over-ridden.
3) fixed reusage of ntlmssp_cli_flgs which was being a pain
4) added pwd_compare() function then fixed bug in cli_use where NULL
domain name was making connections multiply unfruitfully
5) type-casting of mallocs and Reallocs that cause ansi-c compilers to bitch
have we got. and what data do we have. hmm.. i wonder what the NTLMv2
user session key can be... hmmm... weell.... there's some hidden data
here, generated from the user password that doesn't go over-the-wire,
so that's _got_ to be involved. and... that bit of data took a lot of
computation to produce, so it's probably _also_ involved... and md4 no, md5?
no, how about hmac_md5 yes let's try that one (the other's didn't work)
oh goodie, it worked!
i love it when this sort of thing happens. took all of fifteen minutes to
guess it. tried concatenating client and server challenges. tried
concatenating _random_ bits of client and server challenges. tried
md5 of the above. tried hmac_md5 of the above. eventually, it boils down
to this:
kr = MD4(NT#,username,domainname)
hmacntchal=hmac_md5(kr, nt server challenge)
sess_key = hmac_md5(kr, hmacntchal);
a problem i was having.
- added rudimentary CAP_STATUS32 support for same reason.
- added hard-coded, copy-the-same-data-from-over-the-wire version of
CAP_EXTENDED_SECURITY, which is a security-blob to encapsulate
GSSAPI which encodes
SPNEGO which is used to negotiate
Kerberos or NTLMSSP. i have implemented
NTLMSSP which negotiates
NTLMv1 or NTLMv2 and 40-bit or 128-bit etc. i have implemented
NTLMv1 / 40-bit.
*whew*.
Changes to get Samba to compile cleanly with the IRIX compiler
with the options : -fullwarn -woff 1209,1174 (the -woff options
are to turn off warnings about unused function parameters and
controlling loop expressions being constants).
Split prototype generation as we hit a limit in IRIX nawk.
Removed "." code in smbd/filename.c (yet again :-).
Jeremy.
