source/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         const char *vstring = "INFO/version";
  34         uint32 version;
  35
  36         if (tdb)
  37                 return True;
  38         tdb = tdb_open_log(lock_path("account_policy.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
  39         if (!tdb) {
  40                 DEBUG(0,("Failed to open account policy database\n"));
  41                 return False;
  42         }
  43
  44         /* handle a Samba upgrade */
  45         tdb_lock_bystring(tdb, vstring,0);
  46         if (!tdb_fetch_uint32(tdb, vstring, &version) || version != DATABASE_VERSION) {
  47                 tdb_traverse(tdb, tdb_traverse_delete_fn, NULL);
  48                 tdb_store_uint32(tdb, vstring, DATABASE_VERSION);
  49
  50                 account_policy_set(AP_MIN_PASSWORD_LEN, MINPASSWDLENGTH);   /* 5 chars minimum             */
  51                 account_policy_set(AP_PASSWORD_HISTORY, 0);                 /* don't keep any old password */
  52                 account_policy_set(AP_USER_MUST_LOGON_TO_CHG_PASS, 0);      /* don't force user to logon   */
  53                 account_policy_set(AP_MAX_PASSWORD_AGE, (uint32)-1);        /* don't expire                */
  54                 account_policy_set(AP_MIN_PASSWORD_AGE, 0);                 /* 0 days                      */
  55                 account_policy_set(AP_LOCK_ACCOUNT_DURATION, 30);           /* lockout for 30 minutes      */
  56                 account_policy_set(AP_RESET_COUNT_TIME, 30);                /* reset after 30 minutes      */
  57                 account_policy_set(AP_BAD_ATTEMPT_LOCKOUT, 0);              /* don't lockout               */
  58                 account_policy_set(AP_TIME_TO_LOGOUT, -1);                  /* don't force logout          */
  59         }
  60         tdb_unlock_bystring(tdb, vstring);
  61
  62         return True;
  63 }
  64
  65 static const struct {
  66         int field;
  67         const char *string;
  68 } account_policy_names[] = {
  69         {AP_MIN_PASSWORD_LEN, "min password length"},
  70         {AP_PASSWORD_HISTORY, "password history"},
  71         {AP_USER_MUST_LOGON_TO_CHG_PASS, "user must logon to change password"},
  72         {AP_MAX_PASSWORD_AGE, "maximum password age"},
  73         {AP_MIN_PASSWORD_AGE,"minimum password age"},
  74         {AP_LOCK_ACCOUNT_DURATION, "lockout duration"},
  75         {AP_RESET_COUNT_TIME, "reset count minutes"},
  76         {AP_BAD_ATTEMPT_LOCKOUT, "bad lockout attempt"},
  77         {AP_TIME_TO_LOGOUT, "disconnect time"},
  78         {0, NULL}
  79 };
  80
  81 char *account_policy_names_list(void)
  82 {
  83         char *nl, *p;
  84         int i;
  85         size_t len = 0;
  86
  87         for (i=0; account_policy_names[i].string; i++) {
  88                 len += strlen(account_policy_names[i].string) + 1;
  89         }
  90         len++;
  91         nl = SMB_MALLOC(len);
  92         if (!nl) {
  93                 return NULL;
  94         }
  95         p = nl;
  96         for (i=0; account_policy_names[i].string; i++) {
  97                 memcpy(p, account_policy_names[i].string, strlen(account_policy_names[i].string) + 1);
  98                 p[strlen(account_policy_names[i].string)] = '\n';
  99                 p += strlen(account_policy_names[i].string) + 1;
 100         }
 101         *p = '\0';
 102         return nl;
 103 }
 104
 105 /****************************************************************************
 106 Get the account policy name as a string from its #define'ed number
 107 ****************************************************************************/
 108
 109 static const char *decode_account_policy_name(int field)
 110 {
 111         int i;
 112         for (i=0; account_policy_names[i].string; i++) {
 113                 if (field == account_policy_names[i].field)
 114                         return account_policy_names[i].string;
 115         }
 116         return NULL;
 117
 118 }
 119
 120 /****************************************************************************
 121 Get the account policy name as a string from its #define'ed number
 122 ****************************************************************************/
 123
 124 int account_policy_name_to_fieldnum(const char *name)
 125 {
 126         int i;
 127         for (i=0; account_policy_names[i].string; i++) {
 128                 if (strcmp(name, account_policy_names[i].string) == 0)
 129                         return account_policy_names[i].field;
 130         }
 131         return 0;
 132
 133 }
 134
 135 /****************************************************************************
 136 ****************************************************************************/
 137
 138 BOOL account_policy_get(int field, uint32 *value)
 139 {
 140         fstring name;
 141
 142         if(!init_account_policy())return False;
 143
 144         *value = 0;
 145
 146         fstrcpy(name, decode_account_policy_name(field));
 147         if (!*name) {
 148                 DEBUG(1, ("account_policy_get: Field %d is not a valid account policy type!  Cannot get, returning 0.\n", field));
 149                 return False;
 150         }
 151         if (!tdb_fetch_uint32(tdb, name, value)) {
 152                 DEBUG(1, ("account_policy_get: tdb_fetch_uint32 failed for field %d (%s), returning 0\n", field, name));
 153                 return False;
 154         }
 155         DEBUG(10,("account_policy_get: %s:%d\n", name, *value));
 156         return True;
 157 }
 158
 159
 160 /****************************************************************************
 161 ****************************************************************************/
 162 BOOL account_policy_set(int field, uint32 value)
 163 {
 164         fstring name;
 165
 166         if(!init_account_policy())return False;
 167
 168         fstrcpy(name, decode_account_policy_name(field));
 169         if (!*name) {
 170                 DEBUG(1, ("Field %d is not a valid account policy type!  Cannot set.\n", field));
 171                 return False;
 172         }
 173
 174         if (!tdb_store_uint32(tdb, name, value)) {
 175                 DEBUG(1, ("tdb_store_uint32 failed for field %d (%s) on value %u", field, name, value));
 176                 return False;
 177         }
 178
 179         DEBUG(10,("account_policy_set: %s:%d\n", name, value));
 180
 181         return True;
 182 }