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/*
Unix SMB/Netbios implementation.
Version 1.9.
change a password in a local smbpasswd file
Copyright (C) Andrew Tridgell 1998
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"
/*************************************************************
add a new user to the local smbpasswd file
*************************************************************/
static BOOL add_new_user(char *user_name, uid_t uid,
uint16 acb_info,
uchar *new_p16, uchar *new_nt_p16)
{
struct smb_passwd new_smb_pwent;
pwdb_init_smb(&new_smb_pwent);
/* Create a new smb passwd entry and set it to the given password. */
new_smb_pwent.unix_uid = uid;
new_smb_pwent.nt_name = user_name;
new_smb_pwent.smb_passwd = NULL;
new_smb_pwent.smb_nt_passwd = NULL;
new_smb_pwent.acct_ctrl = acb_info;
if (IS_BITS_CLR_ALL(acb_info, ACB_DISABLED | ACB_PWNOTREQ))
{
new_smb_pwent.smb_passwd = new_p16;
new_smb_pwent.smb_nt_passwd = new_nt_p16;
}
return add_smbpwd_entry(&new_smb_pwent);
}
/*************************************************************
change a password entry in the local smbpasswd file.
when modifying an account, set acb_mask to those bits that
require changing (to zero or one) and set acb_info to the
value required in those bits. all bits NOT set in acb_mask
will NOT be modified.
when _adding_ an account, acb_mask must be set to 0xFFFF and
it is ignored, btw :-)
*************************************************************/
BOOL local_password_change(char *user_name,
BOOL add_user,
uint16 acb_info, uint16 acb_mask,
char *new_passwd,
char *err_str, size_t err_str_len,
char *msg_str, size_t msg_str_len)
{
const struct passwd *pwd;
struct smb_passwd *smb_pwent;
static struct smb_passwd new_pwent;
static uchar new_p16[16];
static uchar new_nt_p16[16];
fstring unix_name;
uid_t unix_uid;
*err_str = '\0';
*msg_str = '\0';
pwd = Get_Pwnam(user_name, False);
/*
* Check for a trust account.
*/
if ((acb_info & acb_mask) != acb_info)
{
slprintf(err_str, err_str_len - 1, "programmer error: acb_info (%x) requests bits to be set outside of acb_mask (%x) range\n", acb_info, acb_mask);
}
if (pwd == NULL)
{
if (!IS_BITS_SET_ALL(acb_info, ACB_NORMAL))
{
slprintf(err_str, err_str_len - 1, "User %s does not \
exist in system password file (usually /etc/passwd). \
Cannot add trust account without a valid system user.\n", user_name);
}
else
{
slprintf(err_str, err_str_len - 1, "User %s does not \
exist in system password file (usually /etc/passwd).\n", user_name);
}
return False;
}
unix_uid = pwd->pw_uid;
fstrcpy(unix_name, pwd->pw_name);
/* Calculate the MD4 hash (NT compatible) of the new password. */
nt_lm_owf_gen(new_passwd, new_nt_p16, new_p16);
/* Get the smb passwd entry for this user */
smb_pwent = getsmbpwnam(user_name);
if (smb_pwent == NULL)
{
if (!add_user)
{
slprintf(err_str, err_str_len-1,
"Failed to find entry for user %s.\n", unix_name);
return False;
}
if (add_new_user(user_name, unix_uid, acb_info,
new_p16, new_nt_p16))
{
slprintf(msg_str, msg_str_len-1, "Added user %s.\n", user_name);
return True;
}
else
{
slprintf(err_str, err_str_len-1, "Failed to add entry for user %s.\n", user_name);
return False;
}
}
else
{
/* the entry already existed */
add_user = False;
}
/*
* We are root - just write the new password
* and the valid last change time.
*/
memcpy(&new_pwent, smb_pwent, sizeof(new_pwent));
new_pwent.nt_name = user_name;
new_pwent.acct_ctrl &= ~acb_mask;
new_pwent.acct_ctrl |= (acb_info & acb_mask);
new_pwent.smb_passwd = NULL;
new_pwent.smb_nt_passwd = NULL;
if (IS_BITS_CLR_ALL(acb_info, ACB_DISABLED | ACB_PWNOTREQ))
{
new_pwent.smb_passwd = new_p16;
new_pwent.smb_nt_passwd = new_nt_p16;
}
if (!mod_smbpwd_entry(&new_pwent, True))
{
slprintf(err_str, err_str_len-1, "Failed to modify entry for user %s.\n",
unix_name);
return False;
}
return True;
}
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