source3/registry/reg_init_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 3 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, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "includes.h"
  21
  22 #undef DBGC_CLASS
  23 #define DBGC_CLASS DBGC_REGISTRY
  24
  25 extern REGISTRY_OPS smbconf_reg_ops;
  26
  27 /*
  28  * create a fake token just with enough rights to
  29  * locally access the registry:
  30  *
  31  * - builtin administrators sid
  32  * - disk operators privilege
  33  */
  34 NTSTATUS registry_create_admin_token(TALLOC_CTX *mem_ctx,
  35                                      NT_USER_TOKEN **ptoken)
  36 {
  37         NTSTATUS status;
  38         NT_USER_TOKEN *token = NULL;
  39
  40         if (ptoken == NULL) {
  41                 return NT_STATUS_INVALID_PARAMETER;
  42         }
  43
  44         token = TALLOC_ZERO_P(mem_ctx, NT_USER_TOKEN);
  45         if (token == NULL) {
  46                 DEBUG(1, ("talloc failed\n"));
  47                 status = NT_STATUS_NO_MEMORY;
  48                 goto done;
  49         }
  50         token->privileges = se_disk_operators;
  51         status = add_sid_to_array(token, &global_sid_Builtin_Administrators,
  52                                   &token->user_sids, &token->num_sids);
  53         if (!NT_STATUS_IS_OK(status)) {
  54                 DEBUG(1, ("Error adding builtin administrators sid "
  55                           "to fake token.\n"));
  56                 goto done;
  57         }
  58
  59         *ptoken = token;
  60
  61 done:
  62         return status;
  63 }
  64
  65 /*
  66  * init the smbconf portion of the registry.
  67  * for use in places where not the whole registry is needed,
  68  * e.g. utils/net_conf.c and loadparm.c
  69  */
  70 bool registry_init_smbconf(void)
  71 {
  72         bool ret = false;
  73         int saved_errno = 0;
  74         static REGISTRY_HOOK smbconf_reg_hook = {KEY_SMBCONF, &smbconf_reg_ops};
  75
  76         DEBUG(10, ("registry_init_smbconf called\n"));
  77
  78         if (!regdb_init()) {
  79                 saved_errno = errno;
  80                 DEBUG(1, ("Can't open the registry"));
  81                 if (saved_errno) {
  82                         DEBUGADD(1, (": %s", strerror(saved_errno)));
  83                 }
  84                 DEBUGADD(1, (".\n"));
  85                 goto done;
  86         }
  87         if (!init_registry_key(KEY_SMBCONF)) {
  88                 DEBUG(1, ("Could not initialize registry key '%s'\n",
  89                           KEY_SMBCONF));
  90                 goto done;
  91         }
  92         reghook_cache_init();
  93         if (!reghook_cache_add(&smbconf_reg_hook)) {
  94                 DEBUG(1, ("Error adding smbconf reghooks to reghook cache.\n"));
  95                 goto done;
  96         }
  97
  98         ret = true;
  99
 100 done:
 101         regdb_close();
 102         return ret;
 103 }