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() ) {