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/*
Unix SMB/Netbios implementation.
Version 3.0
Winbind daemon - pam auuth funcions
Copyright (C) Andrew Tridgell 2000
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "winbindd.h"
/************************************************************************
form a key for fetching a domain trust password
************************************************************************/
static char *trust_keystr(char *domain)
{
static fstring keystr;
slprintf(keystr,sizeof(keystr),"%s/%s", SECRETS_MACHINE_ACCT_PASS, domain);
return keystr;
}
/************************************************************************
Routine to get the trust account password for a domain.
The user of this function must have locked the trust password file.
************************************************************************/
static BOOL _get_trust_account_password(char *domain, unsigned char *ret_pwd, time_t *pass_last_set_time)
{
struct machine_acct_pass *pass;
size_t size;
if (!(pass = secrets_fetch(trust_keystr(domain), &size)) ||
size != sizeof(*pass)) return False;
if (pass_last_set_time) *pass_last_set_time = pass->mod_time;
memcpy(ret_pwd, pass->hash, 16);
free(pass);
return True;
}
/* Return a password structure from a username. Specify whether cached data
can be returned. */
enum winbindd_result winbindd_pam_auth(struct winbindd_cli_state *state)
{
NET_USER_INFO_3 info3;
uchar ntpw[16];
uchar lmpw[16];
uchar trust_passwd[16];
uint32 status;
fstring server;
fstring name_domain, name_user;
extern pstring global_myname;
DEBUG(1,("winbindd_pam_auth user=%s\n",
state->request.data.auth.user));
/* Parse domain and username */
parse_domain_user(state->request.data.auth.user, name_domain, name_user);
/* don't allow the null domain */
if (strcmp(name_domain,"") == 0) return WINBINDD_ERROR;
ZERO_STRUCT(info3);
if (!_get_trust_account_password(lp_workgroup(), trust_passwd, NULL)) return WINBINDD_ERROR;
nt_lm_owf_gen(state->request.data.auth.pass, ntpw, lmpw);
slprintf(server, sizeof(server), "\\\\%s", server_state.controller);
status = domain_client_validate_backend(server,
name_user, name_domain,
global_myname, SEC_CHAN_WKSTA,
trust_passwd,
NULL,
lmpw, sizeof(lmpw),
ntpw, sizeof(ntpw), &info3);
if (status != NT_STATUS_NOPROBLEMO) return WINBINDD_ERROR;
return WINBINDD_OK;
}
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