source3/lib/account_pol.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  account policy storage
   4  *  Copyright (C) Jean François Micouleau      1998-2001.
   5  *  Copyright (C) Andrew Bartlett              2002
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include "includes.h"
  23 static TDB_CONTEXT *tdb; /* used for driver files */
  24
  25 #define DATABASE_VERSION 1
  26
  27 /****************************************************************************
  28  Open the account policy tdb.
  29 ****************************************************************************/
  30
  31 BOOL init_account_policy(void)
  32 {
  33         static pid_t local_pid;
  34         char *vstring = "INFO/version";
  35         uint32 version;
  36
  37         if (tdb && local_pid == sys_getpid())
  38                 return True;
  39         tdb = tdb_open_log(lock_path("account_policy.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
  40         if (!tdb) {
  41                 DEBUG(0,("Failed to open account policy database\n"));
  42                 return False;
  43         }
  44
  45         local_pid = sys_getpid();
  46
  47         /* handle a Samba upgrade */
  48         tdb_lock_bystring(tdb, vstring);
  49         if (!tdb_fetch_uint32(tdb, vstring, &version) || version != DATABASE_VERSION) {
  50                 tdb_traverse(tdb, tdb_traverse_delete_fn, NULL);
  51                 tdb_store_uint32(tdb, vstring, DATABASE_VERSION);
  52
  53                 account_policy_set(AP_MIN_PASSWORD_LEN, MINPASSWDLENGTH);   /* 5 chars minimum             */
  54                 account_policy_set(AP_PASSWORD_HISTORY, 0);                 /* don't keep any old password */
  55                 account_policy_set(AP_USER_MUST_LOGON_TO_CHG_PASS, 0);      /* don't force user to logon   */
  56                 account_policy_set(AP_MAX_PASSWORD_AGE, MAX_PASSWORD_AGE);  /* 21 days                     */
  57                 account_policy_set(AP_MIN_PASSWORD_AGE, 0);                 /* 0 days                      */
  58                 account_policy_set(AP_LOCK_ACCOUNT_DURATION, 0);            /* lockout for 0 minutes       */
  59                 account_policy_set(AP_RESET_COUNT_TIME, 0);                 /* reset immediatly            */
  60                 account_policy_set(AP_BAD_ATTEMPT_LOCKOUT, 0);              /* don't lockout               */
  61                 account_policy_set(AP_TIME_TO_LOGOUT, -1);                  /* don't force logout          */
  62         }
  63         tdb_unlock_bystring(tdb, vstring);
  64
  65         return True;
  66 }
  67
  68 static const struct {
  69         int field;
  70         char *string;
  71 } account_policy_names[] = {
  72         {AP_MIN_PASSWORD_LEN, "min password length"},
  73         {AP_PASSWORD_HISTORY, "password history"},
  74         {AP_USER_MUST_LOGON_TO_CHG_PASS, "user must logon to change password"},
  75         {AP_MAX_PASSWORD_AGE, "maximum password age"},
  76         {AP_MIN_PASSWORD_AGE,"minimum password age"},
  77         {AP_LOCK_ACCOUNT_DURATION, "lockout duration"},
  78         {AP_RESET_COUNT_TIME, "reset count minutes"},
  79         {AP_BAD_ATTEMPT_LOCKOUT, "bad lockout attempt"},
  80         {AP_TIME_TO_LOGOUT, "disconnect time"},
  81         {0, NULL}
  82 };
  83
  84 /****************************************************************************
  85 Get the account policy name as a string from its #define'ed number
  86 ****************************************************************************/
  87
  88 static const char *decode_account_policy_name(int field)
  89 {
  90         int i;
  91         for (i=0; account_policy_names[i].string; i++) {
  92                 if (field == account_policy_names[i].field)
  93                         return account_policy_names[i].string;
  94         }
  95         return NULL;
  96
  97 }
  98
  99 /****************************************************************************
 100 Get the account policy name as a string from its #define'ed number
 101 ****************************************************************************/
 102
 103 int account_policy_name_to_fieldnum(const char *name)
 104 {
 105         int i;
 106         for (i=0; account_policy_names[i].string; i++) {
 107                 if (strcmp(name, account_policy_names[i].string) == 0)
 108                         return account_policy_names[i].field;
 109         }
 110         return 0;
 111
 112 }
 113
 114
 115 /****************************************************************************
 116 ****************************************************************************/
 117 BOOL account_policy_get(int field, uint32 *value)
 118 {
 119         fstring name;
 120
 121         init_account_policy();
 122
 123         *value = 0;
 124
 125         fstrcpy(name, decode_account_policy_name(field));
 126         if (!*name) {
 127                 DEBUG(1, ("account_policy_get: Field %d is not a valid account policy type!  Cannot get, returning 0.\n", field));
 128                 return False;
 129         }
 130         if (!tdb_fetch_uint32(tdb, name, value)) {
 131                 DEBUG(1, ("account_policy_get: tdb_fetch_uint32 failed for efild %d (%s), returning 0", field, name));
 132                 return False;
 133         }
 134         DEBUG(10,("account_policy_get: %s:%d\n", name, *value));
 135         return True;
 136 }
 137
 138
 139 /****************************************************************************
 140 ****************************************************************************/
 141 BOOL account_policy_set(int field, uint32 value)
 142 {
 143         fstring name;
 144
 145         init_account_policy();
 146
 147         fstrcpy(name, decode_account_policy_name(field));
 148         if (!*name) {
 149                 DEBUG(1, ("Field %d is not a valid account policy type!  Cannot set.\n", field));
 150                 return False;
 151         }
 152
 153         if (!tdb_store_uint32(tdb, name, value)) {
 154                 DEBUG(1, ("tdb_store_uint32 failed for field %d (%s) on value %u", field, name, value));
 155                 return False;
 156         }
 157
 158         DEBUG(10,("account_policy_set: %s:%d\n", name, value));
 159
 160         return True;
 161 }
 162