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 2 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, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 static TDB_CONTEXT *tdb;
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
31 #define AP_LASTSET "LAST_CACHE_UPDATE"
32 #define AP_MIGRATED "ACCOUNT POLICIES WERE MIGRATED TO PASSDB"
35 extern DOM_SID global_sid_World;
36 extern DOM_SID global_sid_Builtin_Administrators;
37 extern DOM_SID global_sid_Builtin_Account_Operators;
38 extern DOM_SID global_sid_Builtin_Server_Operators;
39 extern DOM_SID global_sid_Builtin_Print_Operators;
40 extern DOM_SID global_sid_Builtin_Backup_Operators;
50 static const struct ap_table account_policy_names[] = {
51 {AP_MIN_PASSWORD_LEN, "min password length", MINPASSWDLENGTH,
52 "Minimal password length (default: 5)"},
53 {AP_PASSWORD_HISTORY, "password history", 0,
54 "Length of Password History Entries (default: 0 => off)" },
55 {AP_USER_MUST_LOGON_TO_CHG_PASS, "user must logon to change password", 0,
56 "Force Users to logon for password change (default: 0 => off, 2 => on)"},
57 {AP_MAX_PASSWORD_AGE, "maximum password age", (uint32)-1,
58 "Maximum password age, in seconds (default: -1 => never expire passwords)"},
59 {AP_MIN_PASSWORD_AGE,"minimum password age", 0,
60 "Minimal password age, in seconds (default: 0 => allow immediate password change)"},
61 {AP_LOCK_ACCOUNT_DURATION, "lockout duration", 30,
62 "Lockout duration in minutes (default: 30, -1 => forever)"},
63 {AP_RESET_COUNT_TIME, "reset count minutes", 30,
64 "Reset time after lockout in minutes (default: 30)"},
65 {AP_BAD_ATTEMPT_LOCKOUT, "bad lockout attempt", 0,
66 "Lockout users after bad logon attempts (default: 0 => off)"},
67 {AP_TIME_TO_LOGOUT, "disconnect time", -1,
68 "Disconnect Users outside logon hours (default: -1 => off, 0 => on)"},
69 {AP_REFUSE_MACHINE_PW_CHANGE, "refuse machine password change", 0,
70 "Allow Machine Password changes (default: 0 => off)"},
74 char *account_policy_names_list(void)
80 for (i=0; account_policy_names[i].string; i++) {
81 len += strlen(account_policy_names[i].string) + 1;
89 for (i=0; account_policy_names[i].string; i++) {
90 memcpy(p, account_policy_names[i].string, strlen(account_policy_names[i].string) + 1);
91 p[strlen(account_policy_names[i].string)] = '\n';
92 p += strlen(account_policy_names[i].string) + 1;
98 /****************************************************************************
99 Get the account policy name as a string from its #define'ed number
100 ****************************************************************************/
102 const char *decode_account_policy_name(int field)
105 for (i=0; account_policy_names[i].string; i++) {
106 if (field == account_policy_names[i].field)
107 return account_policy_names[i].string;
113 /****************************************************************************
114 Get the account policy comment as a string from its #define'ed number
115 ****************************************************************************/
117 const char *account_policy_get_comment(int field)
120 for (i=0; account_policy_names[i].string; i++) {
121 if (field == account_policy_names[i].field)
122 return account_policy_names[i].comment;
128 /****************************************************************************
129 Get the account policy name as a string from its #define'ed number
130 ****************************************************************************/
132 int account_policy_name_to_fieldnum(const char *name)
135 for (i=0; account_policy_names[i].string; i++) {
136 if (strcmp(name, account_policy_names[i].string) == 0)
137 return account_policy_names[i].field;
143 /*****************************************************************************
144 Update LAST-Set counter inside the cache
145 *****************************************************************************/
147 static BOOL account_policy_cache_timestamp(uint32 *value, BOOL update)
153 slprintf(key, sizeof(key)-1, "%s", AP_LASTSET);
155 if (!init_account_policy())
158 if (!tdb_fetch_uint32(tdb, key, &val) && !update) {
159 DEBUG(10,("failed to get last set timestamp of cache\n"));
165 DEBUG(10, ("account policy cache lastset was: %s\n", http_timestring(val)));
171 if (!tdb_store_uint32(tdb, key, (uint32)now)) {
172 DEBUG(1, ("tdb_store_uint32 failed for %s\n", key));
175 DEBUG(10, ("account policy cache lastset now: %s\n", http_timestring(now)));
182 /*****************************************************************************
183 Get default value for account policy
184 *****************************************************************************/
186 BOOL account_policy_get_default(int account_policy, uint32 *val)
189 for (i=0; account_policy_names[i].field; i++) {
190 if (account_policy_names[i].field == account_policy) {
191 *val = account_policy_names[i].default_val;
195 DEBUG(0,("no default for account_policy index %d found. This should never happen\n",
200 /*****************************************************************************
201 Set default for a field if it is empty
202 *****************************************************************************/
204 static BOOL account_policy_set_default_on_empty(int account_policy)
209 if (!account_policy_get(account_policy, &value) &&
210 !account_policy_get_default(account_policy, &value)) {
214 return account_policy_set(account_policy, value);
217 /*****************************************************************************
218 Check migration success, set marker if required
219 *****************************************************************************/
221 static BOOL already_migrated_account_policies(BOOL store_migration_success)
226 slprintf(key, sizeof(key)-1, "%s", AP_MIGRATED);
228 if (tdb_fetch_uint32(tdb, key, &value)) {
232 if (store_migration_success) {
234 if (!tdb_store_uint32(tdb, key, 1)) {
235 DEBUG(1, ("tdb_store_uint32 failed for %s\n", key));
244 /*****************************************************************************
245 Migrate account policies to passdb
246 *****************************************************************************/
248 static BOOL migrate_account_policy_names_to_passdb(void)
253 if (already_migrated_account_policies(False)) {
257 DEBUG(1,("start migrating account policies into passdb\n"));
259 for (i=1; decode_account_policy_name(i) != NULL; i++) {
263 if (pdb_get_account_policy(i, &tmp_val)) {
264 DEBUG(10,("account policy already in passdb\n"));
268 if (!got_pol && !account_policy_get(i, &tmp_val)) {
269 DEBUG(0,("very weird: could not get value for account policy\n"));
273 DEBUGADD(1,("\tmigrating account policy (#%d: %s with value: %d) to passdb\n",
274 i, decode_account_policy_name(i), tmp_val));
276 /* set policy via new passdb api */
277 if (!pdb_set_account_policy(i, tmp_val)) {
278 DEBUG(0,("failed to set account_policy\n"));
284 if (!already_migrated_account_policies(True)) {
285 DEBUG(0,("could not store marker for account policy migration in the tdb\n"));
289 DEBUGADD(1,("succesfully migrated account policies into passdb\n"));
294 /*****************************************************************************
295 Open the account policy tdb.
296 ***`*************************************************************************/
298 BOOL init_account_policy(void)
301 const char *vstring = "INFO/version";
308 tdb = tdb_open_log(lock_path("account_policy.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
310 DEBUG(0,("Failed to open account policy database\n"));
314 /* handle a Samba upgrade */
315 tdb_lock_bystring(tdb, vstring,0);
316 if (!tdb_fetch_uint32(tdb, vstring, &version) || version != DATABASE_VERSION) {
318 tdb_store_uint32(tdb, vstring, DATABASE_VERSION);
320 for (i=0; account_policy_names[i].field; i++) {
322 if (!account_policy_set_default_on_empty(account_policy_names[i].field)) {
323 DEBUG(0,("failed to set default value in account policy tdb\n"));
329 if (!migrate_account_policy_names_to_passdb()) {
330 DEBUG(0,("Could not migrate account policy tdb to passdb.\n"));
334 tdb_unlock_bystring(tdb, vstring);
336 /* These exist by default on NT4 in [HKLM\SECURITY\Policy\Accounts] */
338 privilege_create_account( &global_sid_World );
339 privilege_create_account( &global_sid_Builtin_Administrators );
340 privilege_create_account( &global_sid_Builtin_Account_Operators );
341 privilege_create_account( &global_sid_Builtin_Server_Operators );
342 privilege_create_account( &global_sid_Builtin_Print_Operators );
343 privilege_create_account( &global_sid_Builtin_Backup_Operators );
348 /*****************************************************************************
350 *****************************************************************************/
352 BOOL account_policy_get(int field, uint32 *value)
357 if (!init_account_policy())
363 fstrcpy(name, decode_account_policy_name(field));
365 DEBUG(1, ("account_policy_get: Field %d is not a valid account policy type! Cannot get, returning 0.\n", field));
368 if (!tdb_fetch_uint32(tdb, name, ®val)) {
369 DEBUG(1, ("account_policy_get: tdb_fetch_uint32 failed for field %d (%s), returning 0\n", field, name));
375 DEBUG(10,("account_policy_get: %s:%d\n", name, regval));
380 /****************************************************************************
381 Get an account policy from a (migrated tdb)
382 ****************************************************************************/
384 BOOL account_policy_set(int field, uint32 value)
388 if (!init_account_policy())
391 fstrcpy(name, decode_account_policy_name(field));
393 DEBUG(1, ("Field %d is not a valid account policy type! Cannot set.\n", field));
397 if (!tdb_store_uint32(tdb, name, value)) {
398 DEBUG(1, ("tdb_store_uint32 failed for field %d (%s) on value %u\n", field, name, value));
402 DEBUG(10,("account_policy_set: %s:%d\n", name, value));
407 /****************************************************************************
408 Set an account policy in the cache
409 ****************************************************************************/
411 BOOL cache_account_policy_set(int field, uint32 value)
415 for (i=0; account_policy_names[i].field; i++) {
417 if (account_policy_names[i].field == field) {
419 DEBUG(10,("cache_account_policy_set: updating account pol cache\n"));
421 if (!account_policy_set(field, value)) {
425 if (!account_policy_cache_timestamp(&lastset, True)) {
426 DEBUG(10,("cache_account_policy_set: failed to get lastest cache update timestamp\n"));
430 DEBUG(10,("cache_account_policy_set: cache valid until: %s\n", http_timestring(lastset+AP_TTL)));
437 /*****************************************************************************
438 Get an account policy from the cache
439 *****************************************************************************/
441 BOOL cache_account_policy_get(int field, uint32 *value)
445 if (!account_policy_cache_timestamp(&lastset, False)) {
446 DEBUG(10,("cache_account_policy_get: failed to get latest cache update timestamp\n"));
450 if ((lastset + AP_TTL) < (uint32)time(NULL) ) {
451 DEBUG(10,("cache_account_policy_get: no valid cache entry (cache expired)\n"));
455 for (i=0; account_policy_names[i].field; i++) {
456 if (account_policy_names[i].field == field) {
457 return account_policy_get(field, value);
465 /****************************************************************************
466 ****************************************************************************/
468 TDB_CONTEXT *get_account_pol_tdb( void )
472 if ( !init_account_policy() )