/*
* Unix SMB/CIFS implementation.
* account policy storage
* Copyright (C) Jean Fran�ois Micouleau 1998-2001.
* Copyright (C) Andrew Bartlett 2002
*
* 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"
static TDB_CONTEXT *tdb;
#define DATABASE_VERSION 2
extern DOM_SID global_sid_World;
extern DOM_SID global_sid_Builtin_Administrators;
extern DOM_SID global_sid_Builtin_Account_Operators;
extern DOM_SID global_sid_Builtin_Server_Operators;
extern DOM_SID global_sid_Builtin_Print_Operators;
extern DOM_SID global_sid_Builtin_Backup_Operators;
/****************************************************************************
Set default for a field if it is empty
****************************************************************************/
static void set_default_on_empty(int field, uint32 value)
{
if (account_policy_get(field, NULL))
return;
account_policy_set(field, value);
return;
}
/****************************************************************************
Open the account policy tdb.
****************************************************************************/
BOOL init_account_policy(void)
{
const char *vstring = "INFO/version";
uint32 version;
if (tdb)
return True;
tdb = tdb_open_log(lock_path("account_policy.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
if (!tdb) {
DEBUG(0,("Failed to open account policy database\n"));
return False;
}
/* handle a Samba upgrade */
tdb_lock_bystring(tdb, vstring,0);
if (!tdb_fetch_uint32(tdb, vstring, &version) || version != DATABASE_VERSION) {
tdb_store_uint32(tdb, vstring, DATABASE_VERSION);
set_default_on_empty(
AP_MIN_PASSWORD_LEN,
MINPASSWDLENGTH);/* 5 chars minimum */
set_default_on_empty(
AP_PASSWORD_HISTORY,
0); /* don't keep any old password */
set_default_on_empty(
AP_USER_MUST_LOGON_TO_CHG_PASS,
0); /* don't force user to logon */
set_default_on_empty(
AP_MAX_PASSWORD_AGE,
(uint32)-1); /* don't expire */
set_default_on_empty(
AP_MIN_PASSWORD_AGE,
0); /* 0 days */
set_default_on_empty(
AP_LOCK_ACCOUNT_DURATION,
30); /* lockout for 30 minutes */
set_default_on_empty(
AP_RESET_COUNT_TIME,
30); /* reset after 30 minutes */
set_default_on_empty(
AP_BAD_ATTEMPT_LOCKOUT,
0); /* don't lockout */
set_default_on_empty(
AP_TIME_TO_LOGOUT,
-1); /* don't force logout */
set_default_on_empty(
AP_REFUSE_MACHINE_PW_CHANGE,
0); /* allow machine pw changes */
}
tdb_unlock_bystring(tdb, vstring);
/* These exist by default on NT4 in [HKLM\SECURITY\Policy\Accounts] */
privilege_create_account( &global_sid_World );
privilege_create_account( &global_sid_Builtin_Administrators );
privilege_create_account( &global_sid_Builtin_Account_Operators );
privilege_create_account( &global_sid_Builtin_Server_Operators );
privilege_create_account( &global_sid_Builtin_Print_Operators );
privilege_create_account( &global_sid_Builtin_Backup_Operators );
return True;
}
static const struct {
int field;
const char *string;
} account_policy_names[] = {
{AP_MIN_PASSWORD_LEN, "min password length"},
{AP_PASSWORD_HISTORY, "password history"},
{AP_USER_MUST_LOGON_TO_CHG_PASS, "user must logon to change password"},
{AP_MAX_PASSWORD_AGE, "maximum password age (seconds since 1970)"},
{AP_MIN_PASSWORD_AGE,"minimum password age (seconds since 1970)"},
{AP_LOCK_ACCOUNT_DURATION, "lockout duration"},
{AP_RESET_COUNT_TIME, "reset count minutes"},
{AP_BAD_ATTEMPT_LOCKOUT, "bad lockout attempt"},
{AP_TIME_TO_LOGOUT, "disconnect time"},
{AP_REFUSE_MACHINE_PW_CHANGE, "refuse machine password change"},
{0, NULL}
};
char *account_policy_names_list(void)
{
char *nl, *p;
int i;
size_t len = 0;
for (i=0; account_policy_names[i].string; i++) {
len += strlen(account_policy_names[i].string) + 1;
}
len++;
nl = SMB_MALLOC(len);
if (!nl) {
return NULL;
}
p = nl;
for (i=0; account_policy_names[i].string; i++) {
memcpy(p, account_policy_names[i].string, strlen(account_policy_names[i].string) + 1);
p[strlen(account_policy_names[i].string)] = '\n';
p += strlen(account_policy_names[i].string) + 1;
}
*p = '\0';
return nl;
}
/****************************************************************************
Get the account policy name as a string from its #define'ed number
****************************************************************************/
static const char *decode_account_policy_name(int field)
{
int i;
for (i=0; account_policy_names[i].string; i++) {
if (field == account_policy_names[i].field)
return account_policy_names[i].string;
}
return NULL;
}
/****************************************************************************
Get the account policy name as a string from its #define'ed number
****************************************************************************/
int account_policy_name_to_fieldnum(const char *name)
{
int i;
for (i=0; account_policy_names[i].string; i++) {
if (strcmp(name, account_policy_names[i].string) == 0)
return account_policy_names[i].field;
}
return 0;
}
/****************************************************************************
****************************************************************************/
BOOL account_policy_get(int field, uint32 *value)
{
fstring name;
uint32 regval;
if(!init_account_policy())return False;
if (value)
*value = 0;
fstrcpy(name, decode_account_policy_name(field));
if (!*name) {
DEBUG(1, ("account_policy_get: Field %d is not a valid account policy type! Cannot get, returning 0.\n", field));
return False;
}
if (!tdb_fetch_uint32(tdb, name, ®val)) {
DEBUG(1, ("account_policy_get: tdb_fetch_uint32 failed for field %d (%s), returning 0\n", field, name));
return False;
}
if (value)
*value = regval;
DEBUG(10,("account_policy_get: %s:%d\n", name, regval));
return True;
}
/****************************************************************************
****************************************************************************/
BOOL account_policy_set(int field, uint32 value)
{
fstring name;
if(!init_account_policy())return False;
fstrcpy(name, decode_account_policy_name(field));
if (!*name) {
DEBUG(1, ("Field %d is not a valid account policy type! Cannot set.\n", field));
return False;
}
if (!tdb_store_uint32(tdb, name, value)) {
DEBUG(1, ("tdb_store_uint32 failed for field %d (%s) on value %u", field, name, value));
return False;
}
DEBUG(10,("account_policy_set: %s:%d\n", name, value));
return True;
}
/****************************************************************************
****************************************************************************/
TDB_CONTEXT *get_account_pol_tdb( void )
{
if ( !tdb ) {
if ( !init_account_policy() )
return NULL;
}
return tdb;
}