source/lib/util_reg_smbconf.c

   1 /*
   2  * Unix SMB/CIFS implementation.
   3  * Registry helper routines
   4  * Copyright (C) Michael Adam 2007
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program; if not, write to the Free Software Foundation, Inc., 675
  18  * Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include "includes.h"
  22
  23 extern REGISTRY_OPS smbconf_reg_ops;
  24
  25 /*
  26  * create a fake token just with enough rights to
  27  * locally access the registry.
  28  */
  29 NT_USER_TOKEN *registry_create_admin_token(TALLOC_CTX *mem_ctx)
  30 {
  31         NT_USER_TOKEN *token = NULL;
  32
  33         /* fake a user token: builtin administrators sid and the
  34          * disk operators privilege is all we need to access the
  35          * registry... */
  36         if (!(token = TALLOC_ZERO_P(mem_ctx, NT_USER_TOKEN))) {
  37                 DEBUG(1, ("talloc failed\n"));
  38                 goto done;
  39         }
  40         token->privileges = se_disk_operators;
  41         if (!add_sid_to_array(token, &global_sid_Builtin_Administrators,
  42                          &token->user_sids, &token->num_sids)) {
  43                 DEBUG(1, ("Error adding builtin administrators sid "
  44                           "to fake token.\n"));
  45                 goto done;
  46         }
  47 done:
  48         return token;
  49 }
  50
  51 /*
  52  * init the smbconf portion of the registry.
  53  * for use in places where not the whole registry is needed,
  54  * e.g. utils/net_conf.c and loadparm.c
  55  */
  56 BOOL registry_init_regdb(void)
  57 {
  58         BOOL ret = False;
  59         int saved_errno = 0;
  60         static REGISTRY_HOOK smbconf_reg_hook = {KEY_SMBCONF, &smbconf_reg_ops};
  61
  62         DEBUG(10, ("registry_init_regdb called\n"));
  63
  64         if (!regdb_init()) {
  65                 saved_errno = errno;
  66                 DEBUG(1, ("Can't open the registry"));
  67                 if (saved_errno) {
  68                         DEBUGADD(1, (": %s", strerror(saved_errno)));
  69                 }
  70                 DEBUGADD(1, (".\n"));
  71                 goto done;
  72         }
  73         reghook_cache_init();
  74         if (!reghook_cache_add(&smbconf_reg_hook)) {
  75                 DEBUG(1, ("Error adding smbconf reghooks to reghook cache.\n"));
  76                 goto done;
  77         }
  78
  79         ret = True;
  80
  81 done:
  82         return ret;
  83 }