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 "dbwrap/dbwrap.h"
26 #include "dbwrap/dbwrap_open.h"
27 #include "../libcli/security/security.h"
28 #include "lib/privileges.h"
30 static struct db_context *db;
32 /* cache all entries for 60 seconds for to save ldap-queries (cache is updated
33 * after this period if admins do not use pdbedit or usermanager but manipulate
34 * ldap directly) - gd */
36 #define DATABASE_VERSION 3
41 enum pdb_policy_type type;
44 const char *description;
45 const char *ldap_attr;
48 static const struct ap_table account_policy_names[] = {
49 {PDB_POLICY_MIN_PASSWORD_LEN, "min password length", MINPASSWDLENGTH,
50 "Minimal password length (default: 5)",
51 "sambaMinPwdLength" },
53 {PDB_POLICY_PASSWORD_HISTORY, "password history", 0,
54 "Length of Password History Entries (default: 0 => off)",
55 "sambaPwdHistoryLength" },
57 {PDB_POLICY_USER_MUST_LOGON_TO_CHG_PASS, "user must logon to change password", 0,
58 "Force Users to logon for password change (default: 0 => off, 2 => on)",
59 "sambaLogonToChgPwd" },
61 {PDB_POLICY_MAX_PASSWORD_AGE, "maximum password age", (uint32) -1,
62 "Maximum password age, in seconds (default: -1 => never expire passwords)",
65 {PDB_POLICY_MIN_PASSWORD_AGE,"minimum password age", 0,
66 "Minimal password age, in seconds (default: 0 => allow immediate password change)",
69 {PDB_POLICY_LOCK_ACCOUNT_DURATION, "lockout duration", 30,
70 "Lockout duration in minutes (default: 30, -1 => forever)",
71 "sambaLockoutDuration" },
73 {PDB_POLICY_RESET_COUNT_TIME, "reset count minutes", 30,
74 "Reset time after lockout in minutes (default: 30)",
75 "sambaLockoutObservationWindow" },
77 {PDB_POLICY_BAD_ATTEMPT_LOCKOUT, "bad lockout attempt", 0,
78 "Lockout users after bad logon attempts (default: 0 => off)",
79 "sambaLockoutThreshold" },
81 {PDB_POLICY_TIME_TO_LOGOUT, "disconnect time", (uint32) -1,
82 "Disconnect Users outside logon hours (default: -1 => off, 0 => on)",
85 {PDB_POLICY_REFUSE_MACHINE_PW_CHANGE, "refuse machine password change", 0,
86 "Allow Machine Password changes (default: 0 => off)",
87 "sambaRefuseMachinePwdChange" },
89 {0, NULL, 0, "", NULL}
92 void account_policy_names_list(const char ***names, int *num_names)
97 for (count=0; account_policy_names[count].string; count++) {
99 nl = SMB_MALLOC_ARRAY(const char *, count);
104 for (i=0; account_policy_names[i].string; i++) {
105 nl[i] = account_policy_names[i].string;
112 /****************************************************************************
113 Get the account policy name as a string from its #define'ed number
114 ****************************************************************************/
116 const char *decode_account_policy_name(enum pdb_policy_type type)
119 for (i=0; account_policy_names[i].string; i++) {
120 if (type == account_policy_names[i].type) {
121 return account_policy_names[i].string;
127 /****************************************************************************
128 Get the account policy LDAP attribute as a string from its #define'ed number
129 ****************************************************************************/
131 const char *get_account_policy_attr(enum pdb_policy_type type)
134 for (i=0; account_policy_names[i].type; i++) {
135 if (type == account_policy_names[i].type) {
136 return account_policy_names[i].ldap_attr;
142 /****************************************************************************
143 Get the account policy description as a string from its #define'ed number
144 ****************************************************************************/
146 const char *account_policy_get_desc(enum pdb_policy_type type)
149 for (i=0; account_policy_names[i].string; i++) {
150 if (type == account_policy_names[i].type) {
151 return account_policy_names[i].description;
157 /****************************************************************************
158 Get the account policy name as a string from its #define'ed number
159 ****************************************************************************/
161 enum pdb_policy_type account_policy_name_to_typenum(const char *name)
164 for (i=0; account_policy_names[i].string; i++) {
165 if (strcmp(name, account_policy_names[i].string) == 0) {
166 return account_policy_names[i].type;
172 /*****************************************************************************
173 Get default value for account policy
174 *****************************************************************************/
176 bool account_policy_get_default(enum pdb_policy_type type, uint32_t *val)
179 for (i=0; account_policy_names[i].type; i++) {
180 if (account_policy_names[i].type == type) {
181 *val = account_policy_names[i].default_val;
185 DEBUG(0,("no default for account_policy index %d found. This should never happen\n",
190 /*****************************************************************************
191 Set default for a type if it is empty
192 *****************************************************************************/
194 static bool account_policy_set_default_on_empty(enum pdb_policy_type type)
199 if (!account_policy_get(type, &value) &&
200 !account_policy_get_default(type, &value)) {
204 return account_policy_set(type, value);
207 /*****************************************************************************
208 Open the account policy tdb.
209 ***`*************************************************************************/
211 bool init_account_policy(void)
214 const char *vstring = "INFO/version";
222 db = db_open(NULL, state_path("account_policy.tdb"), 0, TDB_DEFAULT,
225 if (db == NULL) { /* the account policies files does not exist or open
226 * failed, try to create a new one */
227 db = db_open(NULL, state_path("account_policy.tdb"), 0,
228 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
230 DEBUG(0,("Failed to open account policy database\n"));
235 version = dbwrap_fetch_int32(db, vstring);
236 if (version == DATABASE_VERSION) {
240 /* handle a Samba upgrade */
242 if (db->transaction_start(db) != 0) {
243 DEBUG(0, ("transaction_start failed\n"));
248 version = dbwrap_fetch_int32(db, vstring);
249 if (version == DATABASE_VERSION) {
253 if (db->transaction_cancel(db)) {
254 smb_panic("transaction_cancel failed");
259 if (version != DATABASE_VERSION) {
260 if (dbwrap_store_uint32(db, vstring, DATABASE_VERSION) != 0) {
261 DEBUG(0, ("dbwrap_store_uint32 failed\n"));
265 for (i=0; account_policy_names[i].type; i++) {
267 if (!account_policy_set_default_on_empty(account_policy_names[i].type)) {
268 DEBUG(0,("failed to set default value in account policy tdb\n"));
274 /* These exist by default on NT4 in [HKLM\SECURITY\Policy\Accounts] */
276 privilege_create_account( &global_sid_World );
277 privilege_create_account( &global_sid_Builtin_Account_Operators );
278 privilege_create_account( &global_sid_Builtin_Server_Operators );
279 privilege_create_account( &global_sid_Builtin_Print_Operators );
280 privilege_create_account( &global_sid_Builtin_Backup_Operators );
282 /* BUILTIN\Administrators get everything -- *always* */
284 if ( lp_enable_privileges() ) {
285 if ( !grant_all_privileges( &global_sid_Builtin_Administrators ) ) {
286 DEBUG(1,("init_account_policy: Failed to grant privileges "
287 "to BUILTIN\\Administrators!\n"));
291 if (db->transaction_commit(db) != 0) {
292 DEBUG(0, ("transaction_commit failed\n"));
300 if (db->transaction_cancel(db)) {
301 smb_panic("transaction_cancel failed");
308 /*****************************************************************************
309 Get an account policy (from tdb)
310 *****************************************************************************/
312 bool account_policy_get(enum pdb_policy_type type, uint32_t *value)
317 if (!init_account_policy()) {
325 name = decode_account_policy_name(type);
327 DEBUG(1, ("account_policy_get: Field %d is not a valid account policy type! Cannot get, returning 0.\n", type));
331 if (!dbwrap_fetch_uint32(db, name, ®val)) {
332 DEBUG(1, ("account_policy_get: tdb_fetch_uint32 failed for type %d (%s), returning 0\n", type, name));
340 DEBUG(10,("account_policy_get: name: %s, val: %d\n", name, regval));
345 /****************************************************************************
346 Set an account policy (in tdb)
347 ****************************************************************************/
349 bool account_policy_set(enum pdb_policy_type type, uint32_t value)
354 if (!init_account_policy()) {
358 name = decode_account_policy_name(type);
360 DEBUG(1, ("Field %d is not a valid account policy type! Cannot set.\n", type));
364 status = dbwrap_trans_store_uint32(db, name, value);
365 if (!NT_STATUS_IS_OK(status)) {
366 DEBUG(1, ("store_uint32 failed for type %d (%s) on value "
367 "%u: %s\n", type, name, value, nt_errstr(status)));
371 DEBUG(10,("account_policy_set: name: %s, value: %d\n", name, value));
376 /****************************************************************************
377 Set an account policy in the cache
378 ****************************************************************************/
380 bool cache_account_policy_set(enum pdb_policy_type type, uint32_t value)
382 const char *policy_name = NULL;
383 char *cache_key = NULL;
384 char *cache_value = NULL;
387 policy_name = decode_account_policy_name(type);
388 if (policy_name == NULL) {
389 DEBUG(0,("cache_account_policy_set: no policy found\n"));
393 if (asprintf(&cache_key, "ACCT_POL/%s", policy_name) < 0) {
394 DEBUG(0, ("asprintf failed\n"));
398 if (asprintf(&cache_value, "%lu\n", (unsigned long)value) < 0) {
399 DEBUG(0, ("asprintf failed\n"));
403 DEBUG(10,("cache_account_policy_set: updating account pol cache\n"));
405 ret = gencache_set(cache_key, cache_value, time(NULL)+AP_TTL);
408 SAFE_FREE(cache_key);
409 SAFE_FREE(cache_value);
413 /*****************************************************************************
414 Get an account policy from the cache
415 *****************************************************************************/
417 bool cache_account_policy_get(enum pdb_policy_type type, uint32_t *value)
419 const char *policy_name = NULL;
420 char *cache_key = NULL;
421 char *cache_value = NULL;
424 policy_name = decode_account_policy_name(type);
425 if (policy_name == NULL) {
426 DEBUG(0,("cache_account_policy_set: no policy found\n"));
430 if (asprintf(&cache_key, "ACCT_POL/%s", policy_name) < 0) {
431 DEBUG(0, ("asprintf failed\n"));
435 if (gencache_get(cache_key, &cache_value, NULL)) {
436 uint32 tmp = strtoul(cache_value, NULL, 10);
442 SAFE_FREE(cache_key);
443 SAFE_FREE(cache_value);
447 /****************************************************************************
448 ****************************************************************************/
450 struct db_context *get_account_pol_db( void )
454 if ( !init_account_policy() ) {