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/>.
23 #include "system/filesys.h"
25 #include "../libcli/security/security.h"
26 static struct db_context *db;
28 /* cache all entries for 60 seconds for to save ldap-queries (cache is updated
29 * after this period if admins do not use pdbedit or usermanager but manipulate
30 * ldap directly) - gd */
32 #define DATABASE_VERSION 3
37 enum pdb_policy_type type;
40 const char *description;
41 const char *ldap_attr;
44 static const struct ap_table account_policy_names[] = {
45 {PDB_POLICY_MIN_PASSWORD_LEN, "min password length", MINPASSWDLENGTH,
46 "Minimal password length (default: 5)",
47 "sambaMinPwdLength" },
49 {PDB_POLICY_PASSWORD_HISTORY, "password history", 0,
50 "Length of Password History Entries (default: 0 => off)",
51 "sambaPwdHistoryLength" },
53 {PDB_POLICY_USER_MUST_LOGON_TO_CHG_PASS, "user must logon to change password", 0,
54 "Force Users to logon for password change (default: 0 => off, 2 => on)",
55 "sambaLogonToChgPwd" },
57 {PDB_POLICY_MAX_PASSWORD_AGE, "maximum password age", (uint32) -1,
58 "Maximum password age, in seconds (default: -1 => never expire passwords)",
61 {PDB_POLICY_MIN_PASSWORD_AGE,"minimum password age", 0,
62 "Minimal password age, in seconds (default: 0 => allow immediate password change)",
65 {PDB_POLICY_LOCK_ACCOUNT_DURATION, "lockout duration", 30,
66 "Lockout duration in minutes (default: 30, -1 => forever)",
67 "sambaLockoutDuration" },
69 {PDB_POLICY_RESET_COUNT_TIME, "reset count minutes", 30,
70 "Reset time after lockout in minutes (default: 30)",
71 "sambaLockoutObservationWindow" },
73 {PDB_POLICY_BAD_ATTEMPT_LOCKOUT, "bad lockout attempt", 0,
74 "Lockout users after bad logon attempts (default: 0 => off)",
75 "sambaLockoutThreshold" },
77 {PDB_POLICY_TIME_TO_LOGOUT, "disconnect time", (uint32) -1,
78 "Disconnect Users outside logon hours (default: -1 => off, 0 => on)",
81 {PDB_POLICY_REFUSE_MACHINE_PW_CHANGE, "refuse machine password change", 0,
82 "Allow Machine Password changes (default: 0 => off)",
83 "sambaRefuseMachinePwdChange" },
85 {0, NULL, 0, "", NULL}
88 void account_policy_names_list(const char ***names, int *num_names)
93 for (count=0; account_policy_names[count].string; count++) {
95 nl = SMB_MALLOC_ARRAY(const char *, count);
100 for (i=0; account_policy_names[i].string; i++) {
101 nl[i] = account_policy_names[i].string;
108 /****************************************************************************
109 Get the account policy name as a string from its #define'ed number
110 ****************************************************************************/
112 const char *decode_account_policy_name(enum pdb_policy_type type)
115 for (i=0; account_policy_names[i].string; i++) {
116 if (type == account_policy_names[i].type) {
117 return account_policy_names[i].string;
123 /****************************************************************************
124 Get the account policy LDAP attribute as a string from its #define'ed number
125 ****************************************************************************/
127 const char *get_account_policy_attr(enum pdb_policy_type type)
130 for (i=0; account_policy_names[i].type; i++) {
131 if (type == account_policy_names[i].type) {
132 return account_policy_names[i].ldap_attr;
138 /****************************************************************************
139 Get the account policy description as a string from its #define'ed number
140 ****************************************************************************/
142 const char *account_policy_get_desc(enum pdb_policy_type type)
145 for (i=0; account_policy_names[i].string; i++) {
146 if (type == account_policy_names[i].type) {
147 return account_policy_names[i].description;
153 /****************************************************************************
154 Get the account policy name as a string from its #define'ed number
155 ****************************************************************************/
157 enum pdb_policy_type account_policy_name_to_typenum(const char *name)
160 for (i=0; account_policy_names[i].string; i++) {
161 if (strcmp(name, account_policy_names[i].string) == 0) {
162 return account_policy_names[i].type;
168 /*****************************************************************************
169 Get default value for account policy
170 *****************************************************************************/
172 bool account_policy_get_default(enum pdb_policy_type type, uint32_t *val)
175 for (i=0; account_policy_names[i].type; i++) {
176 if (account_policy_names[i].type == type) {
177 *val = account_policy_names[i].default_val;
181 DEBUG(0,("no default for account_policy index %d found. This should never happen\n",
186 /*****************************************************************************
187 Set default for a type if it is empty
188 *****************************************************************************/
190 static bool account_policy_set_default_on_empty(enum pdb_policy_type type)
195 if (!account_policy_get(type, &value) &&
196 !account_policy_get_default(type, &value)) {
200 return account_policy_set(type, value);
203 /*****************************************************************************
204 Open the account policy tdb.
205 ***`*************************************************************************/
207 bool init_account_policy(void)
210 const char *vstring = "INFO/version";
218 db = db_open(NULL, state_path("account_policy.tdb"), 0, TDB_DEFAULT,
221 if (db == NULL) { /* the account policies files does not exist or open
222 * failed, try to create a new one */
223 db = db_open(NULL, state_path("account_policy.tdb"), 0,
224 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
226 DEBUG(0,("Failed to open account policy database\n"));
231 version = dbwrap_fetch_int32(db, vstring);
232 if (version == DATABASE_VERSION) {
236 /* handle a Samba upgrade */
238 if (db->transaction_start(db) != 0) {
239 DEBUG(0, ("transaction_start failed\n"));
244 version = dbwrap_fetch_int32(db, vstring);
245 if (version == DATABASE_VERSION) {
249 if (db->transaction_cancel(db)) {
250 smb_panic("transaction_cancel failed");
255 if (version != DATABASE_VERSION) {
256 if (dbwrap_store_uint32(db, vstring, DATABASE_VERSION) != 0) {
257 DEBUG(0, ("dbwrap_store_uint32 failed\n"));
261 for (i=0; account_policy_names[i].type; i++) {
263 if (!account_policy_set_default_on_empty(account_policy_names[i].type)) {
264 DEBUG(0,("failed to set default value in account policy tdb\n"));
270 /* These exist by default on NT4 in [HKLM\SECURITY\Policy\Accounts] */
272 privilege_create_account( &global_sid_World );
273 privilege_create_account( &global_sid_Builtin_Account_Operators );
274 privilege_create_account( &global_sid_Builtin_Server_Operators );
275 privilege_create_account( &global_sid_Builtin_Print_Operators );
276 privilege_create_account( &global_sid_Builtin_Backup_Operators );
278 /* BUILTIN\Administrators get everything -- *always* */
280 if ( lp_enable_privileges() ) {
281 if ( !grant_all_privileges( &global_sid_Builtin_Administrators ) ) {
282 DEBUG(1,("init_account_policy: Failed to grant privileges "
283 "to BUILTIN\\Administrators!\n"));
287 if (db->transaction_commit(db) != 0) {
288 DEBUG(0, ("transaction_commit failed\n"));
296 if (db->transaction_cancel(db)) {
297 smb_panic("transaction_cancel failed");
304 /*****************************************************************************
305 Get an account policy (from tdb)
306 *****************************************************************************/
308 bool account_policy_get(enum pdb_policy_type type, uint32_t *value)
313 if (!init_account_policy()) {
321 name = decode_account_policy_name(type);
323 DEBUG(1, ("account_policy_get: Field %d is not a valid account policy type! Cannot get, returning 0.\n", type));
327 if (!dbwrap_fetch_uint32(db, name, ®val)) {
328 DEBUG(1, ("account_policy_get: tdb_fetch_uint32 failed for type %d (%s), returning 0\n", type, name));
336 DEBUG(10,("account_policy_get: name: %s, val: %d\n", name, regval));
341 /****************************************************************************
342 Set an account policy (in tdb)
343 ****************************************************************************/
345 bool account_policy_set(enum pdb_policy_type type, uint32_t value)
350 if (!init_account_policy()) {
354 name = decode_account_policy_name(type);
356 DEBUG(1, ("Field %d is not a valid account policy type! Cannot set.\n", type));
360 status = dbwrap_trans_store_uint32(db, name, value);
361 if (!NT_STATUS_IS_OK(status)) {
362 DEBUG(1, ("store_uint32 failed for type %d (%s) on value "
363 "%u: %s\n", type, name, value, nt_errstr(status)));
367 DEBUG(10,("account_policy_set: name: %s, value: %d\n", name, value));
372 /****************************************************************************
373 Set an account policy in the cache
374 ****************************************************************************/
376 bool cache_account_policy_set(enum pdb_policy_type type, uint32_t value)
378 const char *policy_name = NULL;
379 char *cache_key = NULL;
380 char *cache_value = NULL;
383 policy_name = decode_account_policy_name(type);
384 if (policy_name == NULL) {
385 DEBUG(0,("cache_account_policy_set: no policy found\n"));
389 if (asprintf(&cache_key, "ACCT_POL/%s", policy_name) < 0) {
390 DEBUG(0, ("asprintf failed\n"));
394 if (asprintf(&cache_value, "%lu\n", (unsigned long)value) < 0) {
395 DEBUG(0, ("asprintf failed\n"));
399 DEBUG(10,("cache_account_policy_set: updating account pol cache\n"));
401 ret = gencache_set(cache_key, cache_value, time(NULL)+AP_TTL);
404 SAFE_FREE(cache_key);
405 SAFE_FREE(cache_value);
409 /*****************************************************************************
410 Get an account policy from the cache
411 *****************************************************************************/
413 bool cache_account_policy_get(enum pdb_policy_type type, uint32_t *value)
415 const char *policy_name = NULL;
416 char *cache_key = NULL;
417 char *cache_value = NULL;
420 policy_name = decode_account_policy_name(type);
421 if (policy_name == NULL) {
422 DEBUG(0,("cache_account_policy_set: no policy found\n"));
426 if (asprintf(&cache_key, "ACCT_POL/%s", policy_name) < 0) {
427 DEBUG(0, ("asprintf failed\n"));
431 if (gencache_get(cache_key, &cache_value, NULL)) {
432 uint32 tmp = strtoul(cache_value, NULL, 10);
438 SAFE_FREE(cache_key);
439 SAFE_FREE(cache_value);
443 /****************************************************************************
444 ****************************************************************************/
446 struct db_context *get_account_pol_db( void )
450 if ( !init_account_policy() ) {