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/*
Unix SMB/Netbios implementation.
Version 1.9.
Authentication utility functions
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Andrew Bartlett 2001
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 "includes.h"
extern int DEBUGLEVEL;
/* Data to do lanman1/2 password challenge. */
static unsigned char saved_challenge[8];
static BOOL challenge_sent=False;
/*******************************************************************
Get the next challenge value - no repeats.
********************************************************************/
void generate_next_challenge(char *challenge)
{
unsigned char buf[8];
generate_random_buffer(buf,8,False);
memcpy(saved_challenge, buf, 8);
memcpy(challenge,buf,8);
challenge_sent = True;
}
/*******************************************************************
set the last challenge sent, usually from a password server
********************************************************************/
BOOL set_challenge(unsigned char *challenge)
{
memcpy(saved_challenge,challenge,8);
challenge_sent = True;
return(True);
}
/*******************************************************************
get the last challenge sent
********************************************************************/
BOOL last_challenge(unsigned char *challenge)
{
if (!challenge_sent) return(False);
memcpy(challenge,saved_challenge,8);
return(True);
}
/****************************************************************************
Create a UNIX user on demand.
****************************************************************************/
static int smb_create_user(char *unix_user, char *homedir)
{
pstring add_script;
int ret;
pstrcpy(add_script, lp_adduser_script());
if (! *add_script) return -1;
all_string_sub(add_script, "%u", unix_user, sizeof(pstring));
if (homedir)
all_string_sub(add_script, "%H", homedir, sizeof(pstring));
ret = smbrun(add_script,NULL);
DEBUG(3,("smb_create_user: Running the command `%s' gave %d\n",add_script,ret));
return ret;
}
/****************************************************************************
Delete a UNIX user on demand.
****************************************************************************/
static int smb_delete_user(char *unix_user)
{
pstring del_script;
int ret;
pstrcpy(del_script, lp_deluser_script());
if (! *del_script) return -1;
all_string_sub(del_script, "%u", unix_user, sizeof(pstring));
ret = smbrun(del_script,NULL);
DEBUG(3,("smb_delete_user: Running the command `%s' gave %d\n",del_script,ret));
return ret;
}
/****************************************************************************
Add and Delete UNIX users on demand, based on NT_STATUS codes.
****************************************************************************/
void smb_user_control(char *unix_user, uint32 nt_status)
{
struct passwd *pwd=NULL;
if(nt_status == NT_STATUS_NOPROBLEMO) {
/*
* User validated ok against Domain controller.
* If the admin wants us to try and create a UNIX
* user on the fly, do so.
*/
if(lp_adduser_script() && !(pwd = smb_getpwnam(unix_user,True)))
smb_create_user(unix_user, NULL);
if(lp_adduser_script() && pwd) {
SMB_STRUCT_STAT st;
/*
* Also call smb_create_user if the users home directory
* doesn't exist. Used with winbindd to allow the script to
* create the home directory for a user mapped with winbindd.
*/
if (pwd->pw_dir && (sys_stat(pwd->pw_dir, &st) == -1) && (errno == ENOENT))
smb_create_user(unix_user, pwd->pw_dir);
}
} else if (nt_status == NT_STATUS_NO_SUCH_USER) {
/*
* User failed to validate ok against Domain controller.
* If the failure was "user doesn't exist" and admin
* wants us to try and delete that UNIX user on the fly,
* do so.
*/
if(lp_deluser_script() && smb_getpwnam(unix_user,True))
smb_delete_user(unix_user);
}
}
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