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456f51bcbe
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 used to be commit 5472ddc9ea)
133 lines
4.2 KiB
C
133 lines
4.2 KiB
C
/*
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Unix SMB/CIFS implementation.
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Password cacheing. obfuscation is planned
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Copyright (C) Luke Kenneth Casson Leighton 1996-1998
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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/****************************************************************************
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Initialises a password structure.
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****************************************************************************/
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static void pwd_init(struct pwd_info *pwd)
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{
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memset((char *)pwd->password , '\0', sizeof(pwd->password ));
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memset((char *)pwd->smb_lm_pwd, '\0', sizeof(pwd->smb_lm_pwd));
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memset((char *)pwd->smb_nt_pwd, '\0', sizeof(pwd->smb_nt_pwd));
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memset((char *)pwd->smb_lm_owf, '\0', sizeof(pwd->smb_lm_owf));
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memset((char *)pwd->smb_nt_owf, '\0', sizeof(pwd->smb_nt_owf));
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pwd->null_pwd = True; /* safest option... */
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pwd->cleartext = False;
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pwd->crypted = False;
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}
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/****************************************************************************
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Makes lm and nt hashed passwords.
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****************************************************************************/
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static void pwd_make_lm_nt_16(struct pwd_info *pwd, const char *clr)
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{
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pwd_init(pwd);
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nt_lm_owf_gen(clr, pwd->smb_nt_pwd, pwd->smb_lm_pwd);
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pwd->null_pwd = False;
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pwd->crypted = False;
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}
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/****************************************************************************
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Stores a cleartext password.
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****************************************************************************/
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void pwd_set_cleartext(struct pwd_info *pwd, const char *clr)
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{
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pwd_make_lm_nt_16(pwd, clr);
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fstrcpy(pwd->password, clr);
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pwd->cleartext = True;
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}
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/****************************************************************************
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Gets a cleartext password.
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****************************************************************************/
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void pwd_get_cleartext(struct pwd_info *pwd, fstring clr)
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{
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if (pwd->cleartext)
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fstrcpy(clr, pwd->password);
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else
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clr[0] = 0;
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}
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/****************************************************************************
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Gets lm and nt hashed passwords.
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****************************************************************************/
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void pwd_get_lm_nt_16(struct pwd_info *pwd, uchar lm_pwd[16], uchar nt_pwd[16])
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{
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if (lm_pwd != NULL)
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memcpy(lm_pwd, pwd->smb_lm_pwd, 16);
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if (nt_pwd != NULL)
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memcpy(nt_pwd, pwd->smb_nt_pwd, 16);
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}
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/****************************************************************************
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Makes lm and nt OWF crypts.
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****************************************************************************/
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void pwd_make_lm_nt_owf(struct pwd_info *pwd, uchar cryptkey[8])
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{
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#ifdef DEBUG_PASSWORD
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DEBUG(100,("client cryptkey: "));
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dump_data(100, (char *)cryptkey, 8);
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#endif
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SMBOWFencrypt(pwd->smb_nt_pwd, cryptkey, pwd->smb_nt_owf);
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#ifdef DEBUG_PASSWORD
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DEBUG(100,("nt_owf_passwd: "));
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dump_data(100, (char *)pwd->smb_nt_owf, sizeof(pwd->smb_nt_owf));
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DEBUG(100,("nt_sess_pwd: "));
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dump_data(100, (char *)pwd->smb_nt_pwd, sizeof(pwd->smb_nt_pwd));
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#endif
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SMBOWFencrypt(pwd->smb_lm_pwd, cryptkey, pwd->smb_lm_owf);
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#ifdef DEBUG_PASSWORD
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DEBUG(100,("lm_owf_passwd: "));
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dump_data(100, (char *)pwd->smb_lm_owf, sizeof(pwd->smb_lm_owf));
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DEBUG(100,("lm_sess_pwd: "));
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dump_data(100, (char *)pwd->smb_lm_pwd, sizeof(pwd->smb_lm_pwd));
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#endif
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pwd->crypted = True;
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}
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/****************************************************************************
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Gets lm and nt crypts.
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****************************************************************************/
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void pwd_get_lm_nt_owf(struct pwd_info *pwd, uchar lm_owf[24], uchar nt_owf[24])
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{
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if (lm_owf != NULL)
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memcpy(lm_owf, pwd->smb_lm_owf, 24);
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if (nt_owf != NULL)
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memcpy(nt_owf, pwd->smb_nt_owf, 24);
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}
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