--- /dev/null
+/*
+ * 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
+ * (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.
+ */
+
+#include "includes.h"
+static TDB_CONTEXT *tdb;
+
+/* 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_LASTSET "LAST_CACHE_UPDATE"
+#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}
+};
+
+char *account_policy_names_list(void)
+{
+ char *nl, *p;
+ int i;
+ size_t len = 0;
+
+ for (i=0; account_policy_names[i].string; i++) {
+ len += strlen(account_policy_names[i].string) + 1;
+ }
+ len++;
+ nl = SMB_MALLOC(len);
+ if (!nl) {
+ return NULL;
+ }
+ p = nl;
+ for (i=0; account_policy_names[i].string; i++) {
+ memcpy(p, account_policy_names[i].string, strlen(account_policy_names[i].string) + 1);
+ p[strlen(account_policy_names[i].string)] = '\n';
+ p += strlen(account_policy_names[i].string) + 1;
+ }
+ *p = '\0';
+ return nl;
+}
+
+/****************************************************************************
+Get the account policy name as a string from its #define'ed number
+****************************************************************************/
+
+const char *decode_account_policy_name(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].string;
+ }
+ }
+ return NULL;
+}
+
+/****************************************************************************
+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;
+}
+
+/*****************************************************************************
+Update LAST-Set counter inside the cache
+*****************************************************************************/
+
+static BOOL account_policy_cache_timestamp(uint32 *value, BOOL update,
+ const char *ap_name)
+{
+ pstring key;
+ uint32 val = 0;
+ time_t now;
+
+ if (ap_name == NULL)
+ return False;
+
+ slprintf(key, sizeof(key)-1, "%s/%s", ap_name, AP_LASTSET);
+
+ if (!init_account_policy()) {
+ return False;
+ }
+
+ if (!tdb_fetch_uint32(tdb, key, &val) && !update) {
+ DEBUG(10,("failed to get last set timestamp of cache\n"));
+ return False;
+ }
+
+ *value = val;
+
+ DEBUG(10, ("account policy cache lastset was: %s\n", http_timestring(val)));
+
+ if (update) {
+
+ now = time(NULL);
+
+ if (!tdb_store_uint32(tdb, key, (uint32)now)) {
+ DEBUG(1, ("tdb_store_uint32 failed for %s\n", key));
+ return False;
+ }
+ DEBUG(10, ("account policy cache lastset now: %s\n", http_timestring(now)));
+ *value = now;
+ }
+
+ return True;
+}
+
+/*****************************************************************************
+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;
+ }
+
+ 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 (tdb) {
+ 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"));
+ return False;
+ }
+
+ /* handle a Samba upgrade */
+ tdb_lock_bystring(tdb, vstring,0);
+ if (!tdb_fetch_uint32(tdb, vstring, &version) || version != DATABASE_VERSION) {
+
+ tdb_store_uint32(tdb, vstring, DATABASE_VERSION);
+
+ 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"));
+ return False;
+ }
+ }
+ }
+
+ tdb_unlock_bystring(tdb, vstring);
+
+ /* These exist by default on NT4 in [HKLM\SECURITY\Policy\Accounts] */
+
+ privilege_create_account( &global_sid_World );
+ privilege_create_account( &global_sid_Builtin_Administrators );
+ 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 );
+
+ return True;
+}
+
+/*****************************************************************************
+Get an account policy (from tdb)
+*****************************************************************************/
+
+BOOL account_policy_get(int field, uint32 *value)
+{
+ fstring name;
+ uint32 regval;
+
+ if (!init_account_policy()) {
+ return False;
+ }
+
+ if (value) {
+ *value = 0;
+ }
+
+ fstrcpy(name, decode_account_policy_name(field));
+ if (!*name) {
+ DEBUG(1, ("account_policy_get: Field %d is not a valid account policy type! Cannot get, returning 0.\n", field));
+ return False;
+ }
+
+ if (!tdb_fetch_uint32(tdb, 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_set(int field, uint32 value)
+{
+ fstring name;
+
+ if (!init_account_policy()) {
+ return False;
+ }
+
+ fstrcpy(name, decode_account_policy_name(field));
+ if (!*name) {
+ DEBUG(1, ("Field %d is not a valid account policy type! Cannot set.\n", field));
+ return False;
+ }
+
+ if (!tdb_store_uint32(tdb, name, value)) {
+ DEBUG(1, ("tdb_store_uint32 failed for field %d (%s) on value %u\n", field, name, value));
+ return False;
+ }
+
+ DEBUG(10,("account_policy_set: name: %s, value: %d\n", name, value));
+
+ return True;
+}
+
+/****************************************************************************
+Set an account policy in the cache
+****************************************************************************/
+
+BOOL cache_account_policy_set(int field, uint32 value)
+{
+ uint32 lastset;
+ const char *policy_name = NULL;
+
+ 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,("cache_account_policy_set: updating account pol cache\n"));
+
+ if (!account_policy_set(field, value)) {
+ return False;
+ }
+
+ if (!account_policy_cache_timestamp(&lastset, True, policy_name))
+ {
+ DEBUG(10,("cache_account_policy_set: failed to get lastest cache update timestamp\n"));
+ return False;
+ }
+
+ DEBUG(10,("cache_account_policy_set: cache valid until: %s\n", http_timestring(lastset+AP_TTL)));
+
+ return True;
+}
+
+/*****************************************************************************
+Check whether account policies have been migrated to passdb
+*****************************************************************************/
+
+BOOL account_policy_migrated(BOOL init)
+{
+ pstring key;
+ uint32 val;
+ time_t now;
+
+ slprintf(key, sizeof(key)-1, "AP_MIGRATED_TO_PASSDB");
+
+ if (!init_account_policy()) {
+ return False;
+ }
+
+ if (init) {
+ now = time(NULL);
+
+ if (!tdb_store_uint32(tdb, key, (uint32)now)) {
+ DEBUG(1, ("tdb_store_uint32 failed for %s\n", key));
+ return False;
+ }
+
+ return True;
+ }
+
+ if (!tdb_fetch_uint32(tdb, key, &val)) {
+ return False;
+ }
+
+ return True;
+}
+
+/*****************************************************************************
+ Remove marker that informs that account policies have been migrated to passdb
+*****************************************************************************/
+
+BOOL remove_account_policy_migrated(void)
+{
+ if (!init_account_policy()) {
+ return False;
+ }
+
+ return tdb_delete_bystring(tdb, "AP_MIGRATED_TO_PASSDB");
+}
+
+
+/*****************************************************************************
+Get an account policy from the cache
+*****************************************************************************/
+
+BOOL cache_account_policy_get(int field, uint32 *value)
+{
+ uint32 lastset;
+
+ if (!account_policy_cache_timestamp(&lastset, False,
+ decode_account_policy_name(field)))
+ {
+ DEBUG(10,("cache_account_policy_get: failed to get latest cache update timestamp\n"));
+ return False;
+ }
+
+ if ((lastset + AP_TTL) < (uint32)time(NULL) ) {
+ DEBUG(10,("cache_account_policy_get: no valid cache entry (cache expired)\n"));
+ return False;
+ }
+
+ return account_policy_get(field, value);
+}
+
+
+/****************************************************************************
+****************************************************************************/
+
+TDB_CONTEXT *get_account_pol_tdb( void )
+{
+
+ if ( !tdb ) {
+ if ( !init_account_policy() ) {
+ return NULL;
+ }
+ }
+
+ return tdb;
+}
+
projects / samba / blobdiff