-/*
+/*
* Unix SMB/CIFS implementation.
* account policy storage
* Copyright (C) Jean François Micouleau 1998-2001.
- *
+ * Copyright (C) Andrew Bartlett 2002
+ * Copyright (C) Guenther Deschner 2004-2005
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-static TDB_CONTEXT *tdb; /* used for driver files */
+static struct db_context *db;
-#define DATABASE_VERSION 1
+/* cache all entries for 60 seconds for to save ldap-queries (cache is updated
+ * after this period if admins do not use pdbedit or usermanager but manipulate
+ * ldap directly) - gd */
+
+#define DATABASE_VERSION 3
+#define AP_TTL 60
+
+
+struct ap_table {
+ int field;
+ const char *string;
+ uint32 default_val;
+ const char *description;
+ const char *ldap_attr;
+};
+
+static const struct ap_table account_policy_names[] = {
+ {AP_MIN_PASSWORD_LEN, "min password length", MINPASSWDLENGTH,
+ "Minimal password length (default: 5)",
+ "sambaMinPwdLength" },
+
+ {AP_PASSWORD_HISTORY, "password history", 0,
+ "Length of Password History Entries (default: 0 => off)",
+ "sambaPwdHistoryLength" },
+
+ {AP_USER_MUST_LOGON_TO_CHG_PASS, "user must logon to change password", 0,
+ "Force Users to logon for password change (default: 0 => off, 2 => on)",
+ "sambaLogonToChgPwd" },
+
+ {AP_MAX_PASSWORD_AGE, "maximum password age", (uint32) -1,
+ "Maximum password age, in seconds (default: -1 => never expire passwords)",
+ "sambaMaxPwdAge" },
+
+ {AP_MIN_PASSWORD_AGE,"minimum password age", 0,
+ "Minimal password age, in seconds (default: 0 => allow immediate password change)",
+ "sambaMinPwdAge" },
+
+ {AP_LOCK_ACCOUNT_DURATION, "lockout duration", 30,
+ "Lockout duration in minutes (default: 30, -1 => forever)",
+ "sambaLockoutDuration" },
+
+ {AP_RESET_COUNT_TIME, "reset count minutes", 30,
+ "Reset time after lockout in minutes (default: 30)",
+ "sambaLockoutObservationWindow" },
+
+ {AP_BAD_ATTEMPT_LOCKOUT, "bad lockout attempt", 0,
+ "Lockout users after bad logon attempts (default: 0 => off)",
+ "sambaLockoutThreshold" },
+
+ {AP_TIME_TO_LOGOUT, "disconnect time", (uint32) -1,
+ "Disconnect Users outside logon hours (default: -1 => off, 0 => on)",
+ "sambaForceLogoff" },
+
+ {AP_REFUSE_MACHINE_PW_CHANGE, "refuse machine password change", 0,
+ "Allow Machine Password changes (default: 0 => off)",
+ "sambaRefuseMachinePwdChange" },
+
+ {0, NULL, 0, "", NULL}
+};
+
+void account_policy_names_list(const char ***names, int *num_names)
+{
+ const char **nl;
+ int i, count;
+
+ for (count=0; account_policy_names[count].string; count++) {
+ }
+ nl = SMB_MALLOC_ARRAY(const char *, count);
+ if (!nl) {
+ *num_names = 0;
+ return;
+ }
+ for (i=0; account_policy_names[i].string; i++) {
+ nl[i] = account_policy_names[i].string;
+ }
+ *num_names = count;
+ *names = nl;
+ return;
+}
/****************************************************************************
- Open the account policy tdb.
+Get the account policy name as a string from its #define'ed number
****************************************************************************/
-BOOL init_account_policy(void)
+const char *decode_account_policy_name(int field)
{
- static pid_t local_pid;
- char *vstring = "INFO/version";
+ int i;
+ for (i=0; account_policy_names[i].string; i++) {
+ if (field == account_policy_names[i].field) {
+ return account_policy_names[i].string;
+ }
+ }
+ return NULL;
+}
- if (tdb && local_pid == sys_getpid())
- return True;
- tdb = tdb_open_log(lock_path("account_policy.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
- if (!tdb) {
- DEBUG(0,("Failed to open account policy database\n"));
+/****************************************************************************
+Get the account policy LDAP attribute as a string from its #define'ed number
+****************************************************************************/
+
+const char *get_account_policy_attr(int field)
+{
+ int i;
+ for (i=0; account_policy_names[i].field; i++) {
+ if (field == account_policy_names[i].field) {
+ return account_policy_names[i].ldap_attr;
+ }
+ }
+ return NULL;
+}
+
+/****************************************************************************
+Get the account policy description as a string from its #define'ed number
+****************************************************************************/
+
+const char *account_policy_get_desc(int field)
+{
+ int i;
+ for (i=0; account_policy_names[i].string; i++) {
+ if (field == account_policy_names[i].field) {
+ return account_policy_names[i].description;
+ }
+ }
+ return NULL;
+}
+
+/****************************************************************************
+Get the account policy name as a string from its #define'ed number
+****************************************************************************/
+
+int account_policy_name_to_fieldnum(const char *name)
+{
+ int i;
+ for (i=0; account_policy_names[i].string; i++) {
+ if (strcmp(name, account_policy_names[i].string) == 0) {
+ return account_policy_names[i].field;
+ }
+ }
+ return 0;
+}
+
+/*****************************************************************************
+Get default value for account policy
+*****************************************************************************/
+
+bool account_policy_get_default(int account_policy, uint32 *val)
+{
+ int i;
+ for (i=0; account_policy_names[i].field; i++) {
+ if (account_policy_names[i].field == account_policy) {
+ *val = account_policy_names[i].default_val;
+ return True;
+ }
+ }
+ DEBUG(0,("no default for account_policy index %d found. This should never happen\n",
+ account_policy));
+ return False;
+}
+
+/*****************************************************************************
+ Set default for a field if it is empty
+*****************************************************************************/
+
+static bool account_policy_set_default_on_empty(int account_policy)
+{
+
+ uint32 value;
+
+ if (!account_policy_get(account_policy, &value) &&
+ !account_policy_get_default(account_policy, &value)) {
return False;
}
- local_pid = sys_getpid();
+ return account_policy_set(account_policy, value);
+}
+
+/*****************************************************************************
+ Open the account policy tdb.
+***`*************************************************************************/
+
+bool init_account_policy(void)
+{
+
+ const char *vstring = "INFO/version";
+ uint32 version;
+ int i;
+
+ if (db != NULL) {
+ return True;
+ }
+
+ db = db_open(NULL, state_path("account_policy.tdb"), 0, TDB_DEFAULT,
+ O_RDWR, 0600);
+
+ if (db == NULL) { /* the account policies files does not exist or open
+ * failed, try to create a new one */
+ db = db_open(NULL, state_path("account_policy.tdb"), 0,
+ TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
+ if (db == NULL) {
+ DEBUG(0,("Failed to open account policy database\n"));
+ return False;
+ }
+ }
+
+ version = dbwrap_fetch_int32(db, vstring);
+ if (version == DATABASE_VERSION) {
+ return true;
+ }
/* handle a Samba upgrade */
- tdb_lock_bystring(tdb, vstring);
- if (tdb_fetch_int32(tdb, vstring) != DATABASE_VERSION) {
- tdb_traverse(tdb, tdb_traverse_delete_fn, NULL);
- tdb_store_int32(tdb, vstring, DATABASE_VERSION);
-
- account_policy_set(AP_MIN_PASSWORD_LEN, MINPASSWDLENGTH); /* 5 chars minimum */
- account_policy_set(AP_PASSWORD_HISTORY, 0); /* don't keep any old password */
- account_policy_set(AP_USER_MUST_LOGON_TO_CHG_PASS, 0); /* don't force user to logon */
- account_policy_set(AP_MAX_PASSWORD_AGE, MAX_PASSWORD_AGE); /* 21 days */
- account_policy_set(AP_MIN_PASSWORD_AGE, 0); /* 0 days */
- account_policy_set(AP_LOCK_ACCOUNT_DURATION, 0); /* lockout for 0 minutes */
- account_policy_set(AP_RESET_COUNT_TIME, 0); /* reset immediatly */
- account_policy_set(AP_BAD_ATTEMPT_LOCKOUT, 0); /* don't lockout */
- account_policy_set(AP_TIME_TO_LOGOUT, -1); /* don't force logout */
- }
- tdb_unlock_bystring(tdb, vstring);
+
+ if (db->transaction_start(db) != 0) {
+ DEBUG(0, ("transaction_start failed\n"));
+ TALLOC_FREE(db);
+ return false;
+ }
+
+ version = dbwrap_fetch_int32(db, vstring);
+ if (version == DATABASE_VERSION) {
+ /*
+ * Race condition
+ */
+ if (db->transaction_cancel(db)) {
+ smb_panic("transaction_cancel failed");
+ }
+ return true;
+ }
+
+ if (version != DATABASE_VERSION) {
+ if (dbwrap_store_uint32(db, vstring, DATABASE_VERSION) != 0) {
+ DEBUG(0, ("dbwrap_store_uint32 failed\n"));
+ goto cancel;
+ }
+
+ for (i=0; account_policy_names[i].field; i++) {
+
+ if (!account_policy_set_default_on_empty(account_policy_names[i].field)) {
+ DEBUG(0,("failed to set default value in account policy tdb\n"));
+ goto cancel;
+ }
+ }
+ }
+
+ /* These exist by default on NT4 in [HKLM\SECURITY\Policy\Accounts] */
+
+ privilege_create_account( &global_sid_World );
+ privilege_create_account( &global_sid_Builtin_Account_Operators );
+ privilege_create_account( &global_sid_Builtin_Server_Operators );
+ privilege_create_account( &global_sid_Builtin_Print_Operators );
+ privilege_create_account( &global_sid_Builtin_Backup_Operators );
+
+ /* BUILTIN\Administrators get everything -- *always* */
+
+ if ( lp_enable_privileges() ) {
+ if ( !grant_all_privileges( &global_sid_Builtin_Administrators ) ) {
+ DEBUG(1,("init_account_policy: Failed to grant privileges "
+ "to BUILTIN\\Administrators!\n"));
+ }
+ }
+
+ if (db->transaction_commit(db) != 0) {
+ DEBUG(0, ("transaction_commit failed\n"));
+ TALLOC_FREE(db);
+ return false;
+ }
return True;
+
+ cancel:
+ if (db->transaction_cancel(db)) {
+ smb_panic("transaction_cancel failed");
+ }
+ TALLOC_FREE(db);
+
+ return false;
}
-/****************************************************************************
-****************************************************************************/
+/*****************************************************************************
+Get an account policy (from tdb)
+*****************************************************************************/
-static char *decode_account_policy_name(int field)
+bool account_policy_get(int field, uint32 *value)
{
- switch (field) {
- case AP_MIN_PASSWORD_LEN:
- return "min password length";
- case AP_PASSWORD_HISTORY:
- return "password history";
- case AP_USER_MUST_LOGON_TO_CHG_PASS:
- return "user must logon to change password";
- case AP_MAX_PASSWORD_AGE:
- return "maximum password age";
- case AP_MIN_PASSWORD_AGE:
- return "minimum password age";
- case AP_LOCK_ACCOUNT_DURATION:
- return "lockout duration";
- case AP_RESET_COUNT_TIME:
- return "reset count minutes";
- case AP_BAD_ATTEMPT_LOCKOUT:
- return "bad lockout attempt";
- case AP_TIME_TO_LOGOUT:
- return "disconnect time";
- default:
- return "undefined value";
+ const char *name;
+ uint32 regval;
+
+ if (!init_account_policy()) {
+ return False;
+ }
+
+ if (value) {
+ *value = 0;
+ }
+
+ name = decode_account_policy_name(field);
+ if (name == NULL) {
+ DEBUG(1, ("account_policy_get: Field %d is not a valid account policy type! Cannot get, returning 0.\n", field));
+ return False;
+ }
+
+ if (!dbwrap_fetch_uint32(db, name, ®val)) {
+ DEBUG(1, ("account_policy_get: tdb_fetch_uint32 failed for field %d (%s), returning 0\n", field, name));
+ return False;
}
+
+ if (value) {
+ *value = regval;
+ }
+
+ DEBUG(10,("account_policy_get: name: %s, val: %d\n", name, regval));
+ return True;
}
/****************************************************************************
+Set an account policy (in tdb)
****************************************************************************/
-BOOL account_policy_get(int field, uint32 *value)
+
+bool account_policy_set(int field, uint32 value)
{
- fstring name;
+ const char *name;
+ NTSTATUS status;
+
+ if (!init_account_policy()) {
+ return False;
+ }
+
+ name = decode_account_policy_name(field);
+ if (name == NULL) {
+ DEBUG(1, ("Field %d is not a valid account policy type! Cannot set.\n", field));
+ return False;
+ }
+
+ status = dbwrap_trans_store_uint32(db, name, value);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("store_uint32 failed for field %d (%s) on value "
+ "%u: %s\n", field, name, value, nt_errstr(status)));
+ return False;
+ }
- init_account_policy();
+ DEBUG(10,("account_policy_set: name: %s, value: %d\n", name, value));
- fstrcpy(name, decode_account_policy_name(field));
- *value=tdb_fetch_int32(tdb, name);
- DEBUG(10,("account_policy_get: %s:%d\n", name, *value));
return True;
}
-
/****************************************************************************
+Set an account policy in the cache
****************************************************************************/
-BOOL account_policy_set(int field, uint32 value)
+
+bool cache_account_policy_set(int field, uint32 value)
{
- fstring name;
+ const char *policy_name = NULL;
+ char *cache_key = NULL;
+ char *cache_value = NULL;
+ bool ret = False;
+
+ policy_name = decode_account_policy_name(field);
+ if (policy_name == NULL) {
+ DEBUG(0,("cache_account_policy_set: no policy found\n"));
+ return False;
+ }
+
+ if (asprintf(&cache_key, "ACCT_POL/%s", policy_name) < 0) {
+ DEBUG(0, ("asprintf failed\n"));
+ goto done;
+ }
+
+ if (asprintf(&cache_value, "%lu\n", (unsigned long)value) < 0) {
+ DEBUG(0, ("asprintf failed\n"));
+ goto done;
+ }
+
+ DEBUG(10,("cache_account_policy_set: updating account pol cache\n"));
+
+ ret = gencache_set(cache_key, cache_value, time(NULL)+AP_TTL);
+
+ done:
+ SAFE_FREE(cache_key);
+ SAFE_FREE(cache_value);
+ return ret;
+}
- init_account_policy();
+/*****************************************************************************
+Get an account policy from the cache
+*****************************************************************************/
- fstrcpy(name, decode_account_policy_name(field));
- if ( tdb_store_int32(tdb, name, value)== -1)
+bool cache_account_policy_get(int field, uint32 *value)
+{
+ const char *policy_name = NULL;
+ char *cache_key = NULL;
+ char *cache_value = NULL;
+ bool ret = False;
+
+ policy_name = decode_account_policy_name(field);
+ if (policy_name == NULL) {
+ DEBUG(0,("cache_account_policy_set: no policy found\n"));
return False;
- DEBUG(10,("account_policy_set: %s:%d\n", name, value));
-
- return True;
+ }
+
+ if (asprintf(&cache_key, "ACCT_POL/%s", policy_name) < 0) {
+ DEBUG(0, ("asprintf failed\n"));
+ goto done;
+ }
+
+ if (gencache_get(cache_key, &cache_value, NULL)) {
+ uint32 tmp = strtoul(cache_value, NULL, 10);
+ *value = tmp;
+ ret = True;
+ }
+
+ done:
+ SAFE_FREE(cache_key);
+ SAFE_FREE(cache_value);
+ return ret;
+}
+
+/****************************************************************************
+****************************************************************************/
+
+struct db_context *get_account_pol_db( void )
+{
+
+ if ( db == NULL ) {
+ if ( !init_account_policy() ) {
+ return NULL;
+ }
+ }
+
+ return db;
}
git.samba.org / ira / wip.git / blobdiff