2 * Unix SMB/CIFS implementation.
3 * account policy storage
4 * Copyright (C) Jean François Micouleau 1998-2001.
5 * Copyright (C) Andrew Bartlett 2002
6 * Copyright (C) Guenther Deschner 2004-2005
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 3 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, see <http://www.gnu.org/licenses/>.
24 #include "../libcli/security/security.h"
25 static struct db_context
*db
;
27 /* cache all entries for 60 seconds for to save ldap-queries (cache is updated
28 * after this period if admins do not use pdbedit or usermanager but manipulate
29 * ldap directly) - gd */
31 #define DATABASE_VERSION 3
36 enum pdb_policy_type type
;
39 const char *description
;
40 const char *ldap_attr
;
43 static const struct ap_table account_policy_names
[] = {
44 {PDB_POLICY_MIN_PASSWORD_LEN
, "min password length", MINPASSWDLENGTH
,
45 "Minimal password length (default: 5)",
46 "sambaMinPwdLength" },
48 {PDB_POLICY_PASSWORD_HISTORY
, "password history", 0,
49 "Length of Password History Entries (default: 0 => off)",
50 "sambaPwdHistoryLength" },
52 {PDB_POLICY_USER_MUST_LOGON_TO_CHG_PASS
, "user must logon to change password", 0,
53 "Force Users to logon for password change (default: 0 => off, 2 => on)",
54 "sambaLogonToChgPwd" },
56 {PDB_POLICY_MAX_PASSWORD_AGE
, "maximum password age", (uint32
) -1,
57 "Maximum password age, in seconds (default: -1 => never expire passwords)",
60 {PDB_POLICY_MIN_PASSWORD_AGE
,"minimum password age", 0,
61 "Minimal password age, in seconds (default: 0 => allow immediate password change)",
64 {PDB_POLICY_LOCK_ACCOUNT_DURATION
, "lockout duration", 30,
65 "Lockout duration in minutes (default: 30, -1 => forever)",
66 "sambaLockoutDuration" },
68 {PDB_POLICY_RESET_COUNT_TIME
, "reset count minutes", 30,
69 "Reset time after lockout in minutes (default: 30)",
70 "sambaLockoutObservationWindow" },
72 {PDB_POLICY_BAD_ATTEMPT_LOCKOUT
, "bad lockout attempt", 0,
73 "Lockout users after bad logon attempts (default: 0 => off)",
74 "sambaLockoutThreshold" },
76 {PDB_POLICY_TIME_TO_LOGOUT
, "disconnect time", (uint32
) -1,
77 "Disconnect Users outside logon hours (default: -1 => off, 0 => on)",
80 {PDB_POLICY_REFUSE_MACHINE_PW_CHANGE
, "refuse machine password change", 0,
81 "Allow Machine Password changes (default: 0 => off)",
82 "sambaRefuseMachinePwdChange" },
84 {0, NULL
, 0, "", NULL
}
87 void account_policy_names_list(const char ***names
, int *num_names
)
92 for (count
=0; account_policy_names
[count
].string
; count
++) {
94 nl
= SMB_MALLOC_ARRAY(const char *, count
);
99 for (i
=0; account_policy_names
[i
].string
; i
++) {
100 nl
[i
] = account_policy_names
[i
].string
;
107 /****************************************************************************
108 Get the account policy name as a string from its #define'ed number
109 ****************************************************************************/
111 const char *decode_account_policy_name(enum pdb_policy_type type
)
114 for (i
=0; account_policy_names
[i
].string
; i
++) {
115 if (type
== account_policy_names
[i
].type
) {
116 return account_policy_names
[i
].string
;
122 /****************************************************************************
123 Get the account policy LDAP attribute as a string from its #define'ed number
124 ****************************************************************************/
126 const char *get_account_policy_attr(enum pdb_policy_type type
)
129 for (i
=0; account_policy_names
[i
].type
; i
++) {
130 if (type
== account_policy_names
[i
].type
) {
131 return account_policy_names
[i
].ldap_attr
;
137 /****************************************************************************
138 Get the account policy description as a string from its #define'ed number
139 ****************************************************************************/
141 const char *account_policy_get_desc(enum pdb_policy_type type
)
144 for (i
=0; account_policy_names
[i
].string
; i
++) {
145 if (type
== account_policy_names
[i
].type
) {
146 return account_policy_names
[i
].description
;
152 /****************************************************************************
153 Get the account policy name as a string from its #define'ed number
154 ****************************************************************************/
156 enum pdb_policy_type
account_policy_name_to_typenum(const char *name
)
159 for (i
=0; account_policy_names
[i
].string
; i
++) {
160 if (strcmp(name
, account_policy_names
[i
].string
) == 0) {
161 return account_policy_names
[i
].type
;
167 /*****************************************************************************
168 Get default value for account policy
169 *****************************************************************************/
171 bool account_policy_get_default(enum pdb_policy_type type
, uint32_t *val
)
174 for (i
=0; account_policy_names
[i
].type
; i
++) {
175 if (account_policy_names
[i
].type
== type
) {
176 *val
= account_policy_names
[i
].default_val
;
180 DEBUG(0,("no default for account_policy index %d found. This should never happen\n",
185 /*****************************************************************************
186 Set default for a type if it is empty
187 *****************************************************************************/
189 static bool account_policy_set_default_on_empty(enum pdb_policy_type type
)
194 if (!account_policy_get(type
, &value
) &&
195 !account_policy_get_default(type
, &value
)) {
199 return account_policy_set(type
, value
);
202 /*****************************************************************************
203 Open the account policy tdb.
204 ***`*************************************************************************/
206 bool init_account_policy(void)
209 const char *vstring
= "INFO/version";
217 db
= db_open(NULL
, state_path("account_policy.tdb"), 0, TDB_DEFAULT
,
220 if (db
== NULL
) { /* the account policies files does not exist or open
221 * failed, try to create a new one */
222 db
= db_open(NULL
, state_path("account_policy.tdb"), 0,
223 TDB_DEFAULT
, O_RDWR
|O_CREAT
, 0600);
225 DEBUG(0,("Failed to open account policy database\n"));
230 version
= dbwrap_fetch_int32(db
, vstring
);
231 if (version
== DATABASE_VERSION
) {
235 /* handle a Samba upgrade */
237 if (db
->transaction_start(db
) != 0) {
238 DEBUG(0, ("transaction_start failed\n"));
243 version
= dbwrap_fetch_int32(db
, vstring
);
244 if (version
== DATABASE_VERSION
) {
248 if (db
->transaction_cancel(db
)) {
249 smb_panic("transaction_cancel failed");
254 if (version
!= DATABASE_VERSION
) {
255 if (dbwrap_store_uint32(db
, vstring
, DATABASE_VERSION
) != 0) {
256 DEBUG(0, ("dbwrap_store_uint32 failed\n"));
260 for (i
=0; account_policy_names
[i
].type
; i
++) {
262 if (!account_policy_set_default_on_empty(account_policy_names
[i
].type
)) {
263 DEBUG(0,("failed to set default value in account policy tdb\n"));
269 /* These exist by default on NT4 in [HKLM\SECURITY\Policy\Accounts] */
271 privilege_create_account( &global_sid_World
);
272 privilege_create_account( &global_sid_Builtin_Account_Operators
);
273 privilege_create_account( &global_sid_Builtin_Server_Operators
);
274 privilege_create_account( &global_sid_Builtin_Print_Operators
);
275 privilege_create_account( &global_sid_Builtin_Backup_Operators
);
277 /* BUILTIN\Administrators get everything -- *always* */
279 if ( lp_enable_privileges() ) {
280 if ( !grant_all_privileges( &global_sid_Builtin_Administrators
) ) {
281 DEBUG(1,("init_account_policy: Failed to grant privileges "
282 "to BUILTIN\\Administrators!\n"));
286 if (db
->transaction_commit(db
) != 0) {
287 DEBUG(0, ("transaction_commit failed\n"));
295 if (db
->transaction_cancel(db
)) {
296 smb_panic("transaction_cancel failed");
303 /*****************************************************************************
304 Get an account policy (from tdb)
305 *****************************************************************************/
307 bool account_policy_get(enum pdb_policy_type type
, uint32_t *value
)
312 if (!init_account_policy()) {
320 name
= decode_account_policy_name(type
);
322 DEBUG(1, ("account_policy_get: Field %d is not a valid account policy type! Cannot get, returning 0.\n", type
));
326 if (!dbwrap_fetch_uint32(db
, name
, ®val
)) {
327 DEBUG(1, ("account_policy_get: tdb_fetch_uint32 failed for type %d (%s), returning 0\n", type
, name
));
335 DEBUG(10,("account_policy_get: name: %s, val: %d\n", name
, regval
));
340 /****************************************************************************
341 Set an account policy (in tdb)
342 ****************************************************************************/
344 bool account_policy_set(enum pdb_policy_type type
, uint32_t value
)
349 if (!init_account_policy()) {
353 name
= decode_account_policy_name(type
);
355 DEBUG(1, ("Field %d is not a valid account policy type! Cannot set.\n", type
));
359 status
= dbwrap_trans_store_uint32(db
, name
, value
);
360 if (!NT_STATUS_IS_OK(status
)) {
361 DEBUG(1, ("store_uint32 failed for type %d (%s) on value "
362 "%u: %s\n", type
, name
, value
, nt_errstr(status
)));
366 DEBUG(10,("account_policy_set: name: %s, value: %d\n", name
, value
));
371 /****************************************************************************
372 Set an account policy in the cache
373 ****************************************************************************/
375 bool cache_account_policy_set(enum pdb_policy_type type
, uint32_t value
)
377 const char *policy_name
= NULL
;
378 char *cache_key
= NULL
;
379 char *cache_value
= NULL
;
382 policy_name
= decode_account_policy_name(type
);
383 if (policy_name
== NULL
) {
384 DEBUG(0,("cache_account_policy_set: no policy found\n"));
388 if (asprintf(&cache_key
, "ACCT_POL/%s", policy_name
) < 0) {
389 DEBUG(0, ("asprintf failed\n"));
393 if (asprintf(&cache_value
, "%lu\n", (unsigned long)value
) < 0) {
394 DEBUG(0, ("asprintf failed\n"));
398 DEBUG(10,("cache_account_policy_set: updating account pol cache\n"));
400 ret
= gencache_set(cache_key
, cache_value
, time(NULL
)+AP_TTL
);
403 SAFE_FREE(cache_key
);
404 SAFE_FREE(cache_value
);
408 /*****************************************************************************
409 Get an account policy from the cache
410 *****************************************************************************/
412 bool cache_account_policy_get(enum pdb_policy_type type
, uint32_t *value
)
414 const char *policy_name
= NULL
;
415 char *cache_key
= NULL
;
416 char *cache_value
= NULL
;
419 policy_name
= decode_account_policy_name(type
);
420 if (policy_name
== NULL
) {
421 DEBUG(0,("cache_account_policy_set: no policy found\n"));
425 if (asprintf(&cache_key
, "ACCT_POL/%s", policy_name
) < 0) {
426 DEBUG(0, ("asprintf failed\n"));
430 if (gencache_get(cache_key
, &cache_value
, NULL
)) {
431 uint32 tmp
= strtoul(cache_value
, NULL
, 10);
437 SAFE_FREE(cache_key
);
438 SAFE_FREE(cache_value
);
442 /****************************************************************************
443 ****************************************************************************/
445 struct db_context
*get_account_pol_db( void )
449 if ( !init_account_policy() ) {