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 static struct db_context *db;
26 /* cache all entries for 60 seconds for to save ldap-queries (cache is updated
27 * after this period if admins do not use pdbedit or usermanager but manipulate
28 * ldap directly) - gd */
30 #define DATABASE_VERSION 3
35 enum pdb_policy_type type;
38 const char *description;
39 const char *ldap_attr;
42 static const struct ap_table account_policy_names[] = {
43 {PDB_POLICY_MIN_PASSWORD_LEN, "min password length", MINPASSWDLENGTH,
44 "Minimal password length (default: 5)",
45 "sambaMinPwdLength" },
47 {PDB_POLICY_PASSWORD_HISTORY, "password history", 0,
48 "Length of Password History Entries (default: 0 => off)",
49 "sambaPwdHistoryLength" },
51 {PDB_POLICY_USER_MUST_LOGON_TO_CHG_PASS, "user must logon to change password", 0,
52 "Force Users to logon for password change (default: 0 => off, 2 => on)",
53 "sambaLogonToChgPwd" },
55 {PDB_POLICY_MAX_PASSWORD_AGE, "maximum password age", (uint32) -1,
56 "Maximum password age, in seconds (default: -1 => never expire passwords)",
59 {PDB_POLICY_MIN_PASSWORD_AGE,"minimum password age", 0,
60 "Minimal password age, in seconds (default: 0 => allow immediate password change)",
63 {PDB_POLICY_LOCK_ACCOUNT_DURATION, "lockout duration", 30,
64 "Lockout duration in minutes (default: 30, -1 => forever)",
65 "sambaLockoutDuration" },
67 {PDB_POLICY_RESET_COUNT_TIME, "reset count minutes", 30,
68 "Reset time after lockout in minutes (default: 30)",
69 "sambaLockoutObservationWindow" },
71 {PDB_POLICY_BAD_ATTEMPT_LOCKOUT, "bad lockout attempt", 0,
72 "Lockout users after bad logon attempts (default: 0 => off)",
73 "sambaLockoutThreshold" },
75 {PDB_POLICY_TIME_TO_LOGOUT, "disconnect time", (uint32) -1,
76 "Disconnect Users outside logon hours (default: -1 => off, 0 => on)",
79 {PDB_POLICY_REFUSE_MACHINE_PW_CHANGE, "refuse machine password change", 0,
80 "Allow Machine Password changes (default: 0 => off)",
81 "sambaRefuseMachinePwdChange" },
83 {0, NULL, 0, "", NULL}
86 void account_policy_names_list(const char ***names, int *num_names)
91 for (count=0; account_policy_names[count].string; count++) {
93 nl = SMB_MALLOC_ARRAY(const char *, count);
98 for (i=0; account_policy_names[i].string; i++) {
99 nl[i] = account_policy_names[i].string;
106 /****************************************************************************
107 Get the account policy name as a string from its #define'ed number
108 ****************************************************************************/
110 const char *decode_account_policy_name(enum pdb_policy_type type)
113 for (i=0; account_policy_names[i].string; i++) {
114 if (type == account_policy_names[i].type) {
115 return account_policy_names[i].string;
121 /****************************************************************************
122 Get the account policy LDAP attribute as a string from its #define'ed number
123 ****************************************************************************/
125 const char *get_account_policy_attr(enum pdb_policy_type type)
128 for (i=0; account_policy_names[i].type; i++) {
129 if (type == account_policy_names[i].type) {
130 return account_policy_names[i].ldap_attr;
136 /****************************************************************************
137 Get the account policy description as a string from its #define'ed number
138 ****************************************************************************/
140 const char *account_policy_get_desc(enum pdb_policy_type type)
143 for (i=0; account_policy_names[i].string; i++) {
144 if (type == account_policy_names[i].type) {
145 return account_policy_names[i].description;
151 /****************************************************************************
152 Get the account policy name as a string from its #define'ed number
153 ****************************************************************************/
155 enum pdb_policy_type account_policy_name_to_typenum(const char *name)
158 for (i=0; account_policy_names[i].string; i++) {
159 if (strcmp(name, account_policy_names[i].string) == 0) {
160 return account_policy_names[i].type;
166 /*****************************************************************************
167 Get default value for account policy
168 *****************************************************************************/
170 bool account_policy_get_default(enum pdb_policy_type type, uint32_t *val)
173 for (i=0; account_policy_names[i].type; i++) {
174 if (account_policy_names[i].type == type) {
175 *val = account_policy_names[i].default_val;
179 DEBUG(0,("no default for account_policy index %d found. This should never happen\n",
184 /*****************************************************************************
185 Set default for a type if it is empty
186 *****************************************************************************/
188 static bool account_policy_set_default_on_empty(enum pdb_policy_type type)
193 if (!account_policy_get(type, &value) &&
194 !account_policy_get_default(type, &value)) {
198 return account_policy_set(type, value);
201 /*****************************************************************************
202 Open the account policy tdb.
203 ***`*************************************************************************/
205 bool init_account_policy(void)
208 const char *vstring = "INFO/version";
216 db = db_open(NULL, state_path("account_policy.tdb"), 0, TDB_DEFAULT,
219 if (db == NULL) { /* the account policies files does not exist or open
220 * failed, try to create a new one */
221 db = db_open(NULL, state_path("account_policy.tdb"), 0,
222 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
224 DEBUG(0,("Failed to open account policy database\n"));
229 version = dbwrap_fetch_int32(db, vstring);
230 if (version == DATABASE_VERSION) {
234 /* handle a Samba upgrade */
236 if (db->transaction_start(db) != 0) {
237 DEBUG(0, ("transaction_start failed\n"));
242 version = dbwrap_fetch_int32(db, vstring);
243 if (version == DATABASE_VERSION) {
247 if (db->transaction_cancel(db)) {
248 smb_panic("transaction_cancel failed");
253 if (version != DATABASE_VERSION) {
254 if (dbwrap_store_uint32(db, vstring, DATABASE_VERSION) != 0) {
255 DEBUG(0, ("dbwrap_store_uint32 failed\n"));
259 for (i=0; account_policy_names[i].type; i++) {
261 if (!account_policy_set_default_on_empty(account_policy_names[i].type)) {
262 DEBUG(0,("failed to set default value in account policy tdb\n"));
268 /* These exist by default on NT4 in [HKLM\SECURITY\Policy\Accounts] */
270 privilege_create_account( &global_sid_World );
271 privilege_create_account( &global_sid_Builtin_Account_Operators );
272 privilege_create_account( &global_sid_Builtin_Server_Operators );
273 privilege_create_account( &global_sid_Builtin_Print_Operators );
274 privilege_create_account( &global_sid_Builtin_Backup_Operators );
276 /* BUILTIN\Administrators get everything -- *always* */
278 if ( lp_enable_privileges() ) {
279 if ( !grant_all_privileges( &global_sid_Builtin_Administrators ) ) {
280 DEBUG(1,("init_account_policy: Failed to grant privileges "
281 "to BUILTIN\\Administrators!\n"));
285 if (db->transaction_commit(db) != 0) {
286 DEBUG(0, ("transaction_commit failed\n"));
294 if (db->transaction_cancel(db)) {
295 smb_panic("transaction_cancel failed");
302 /*****************************************************************************
303 Get an account policy (from tdb)
304 *****************************************************************************/
306 bool account_policy_get(enum pdb_policy_type type, uint32_t *value)
311 if (!init_account_policy()) {
319 name = decode_account_policy_name(type);
321 DEBUG(1, ("account_policy_get: Field %d is not a valid account policy type! Cannot get, returning 0.\n", type));
325 if (!dbwrap_fetch_uint32(db, name, ®val)) {
326 DEBUG(1, ("account_policy_get: tdb_fetch_uint32 failed for type %d (%s), returning 0\n", type, name));
334 DEBUG(10,("account_policy_get: name: %s, val: %d\n", name, regval));
339 /****************************************************************************
340 Set an account policy (in tdb)
341 ****************************************************************************/
343 bool account_policy_set(enum pdb_policy_type type, uint32_t value)
348 if (!init_account_policy()) {
352 name = decode_account_policy_name(type);
354 DEBUG(1, ("Field %d is not a valid account policy type! Cannot set.\n", type));
358 status = dbwrap_trans_store_uint32(db, name, value);
359 if (!NT_STATUS_IS_OK(status)) {
360 DEBUG(1, ("store_uint32 failed for type %d (%s) on value "
361 "%u: %s\n", type, name, value, nt_errstr(status)));
365 DEBUG(10,("account_policy_set: name: %s, value: %d\n", name, value));
370 /****************************************************************************
371 Set an account policy in the cache
372 ****************************************************************************/
374 bool cache_account_policy_set(enum pdb_policy_type type, uint32_t value)
376 const char *policy_name = NULL;
377 char *cache_key = NULL;
378 char *cache_value = NULL;
381 policy_name = decode_account_policy_name(type);
382 if (policy_name == NULL) {
383 DEBUG(0,("cache_account_policy_set: no policy found\n"));
387 if (asprintf(&cache_key, "ACCT_POL/%s", policy_name) < 0) {
388 DEBUG(0, ("asprintf failed\n"));
392 if (asprintf(&cache_value, "%lu\n", (unsigned long)value) < 0) {
393 DEBUG(0, ("asprintf failed\n"));
397 DEBUG(10,("cache_account_policy_set: updating account pol cache\n"));
399 ret = gencache_set(cache_key, cache_value, time(NULL)+AP_TTL);
402 SAFE_FREE(cache_key);
403 SAFE_FREE(cache_value);
407 /*****************************************************************************
408 Get an account policy from the cache
409 *****************************************************************************/
411 bool cache_account_policy_get(enum pdb_policy_type type, uint32_t *value)
413 const char *policy_name = NULL;
414 char *cache_key = NULL;
415 char *cache_value = NULL;
418 policy_name = decode_account_policy_name(type);
419 if (policy_name == NULL) {
420 DEBUG(0,("cache_account_policy_set: no policy found\n"));
424 if (asprintf(&cache_key, "ACCT_POL/%s", policy_name) < 0) {
425 DEBUG(0, ("asprintf failed\n"));
429 if (gencache_get(cache_key, &cache_value, NULL)) {
430 uint32 tmp = strtoul(cache_value, NULL, 10);
436 SAFE_FREE(cache_key);
437 SAFE_FREE(cache_value);
441 /****************************************************************************
442 ****************************************************************************/
444 struct db_context *get_account_pol_db( void )
448 if ( !init_account_policy() ) {