root/source4/dsdb/samdb/samdb_privilege.c

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DEFINITIONS

This source file includes following definitions.
  1. samdb_privilege_setup_sid
  2. samdb_privilege_setup

   1 /* 
   2    Unix SMB/CIFS implementation.
   3 
   4    manipulate privilege records in samdb
   5 
   6    Copyright (C) Andrew Tridgell 2004
   7    
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12    
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17    
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21 
  22 #include "includes.h"
  23 #include "libcli/ldap/ldap_ndr.h"
  24 #include "dsdb/samdb/samdb.h"
  25 #include "auth/auth.h"
  26 #include "libcli/security/security.h"
  27 #include "../lib/util/util_ldb.h"
  28 #include "param/param.h"
  29 
  30 /*
  31   add privilege bits for one sid to a security_token
  32 */
  33 static NTSTATUS samdb_privilege_setup_sid(void *samctx, TALLOC_CTX *mem_ctx,
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  34                                           struct security_token *token,
  35                                           const struct dom_sid *sid)
  36 {
  37         const char * const attrs[] = { "privilege", NULL };
  38         struct ldb_message **res = NULL;
  39         struct ldb_message_element *el;
  40         int ret, i;
  41         char *sidstr;
  42 
  43         sidstr = ldap_encode_ndr_dom_sid(mem_ctx, sid);
  44         NT_STATUS_HAVE_NO_MEMORY(sidstr);
  45 
  46         ret = gendb_search(samctx, mem_ctx, NULL, &res, attrs, "objectSid=%s", sidstr);
  47         talloc_free(sidstr);
  48         if (ret != 1) {
  49                 /* not an error to not match */
  50                 return NT_STATUS_OK;
  51         }
  52 
  53         el = ldb_msg_find_element(res[0], "privilege");
  54         if (el == NULL) {
  55                 return NT_STATUS_OK;
  56         }
  57 
  58         for (i=0;i<el->num_values;i++) {
  59                 const char *priv_str = (const char *)el->values[i].data;
  60                 enum sec_privilege privilege = sec_privilege_id(priv_str);
  61                 if (privilege == -1) {
  62                         DEBUG(1,("Unknown privilege '%s' in samdb\n",
  63                                  priv_str));
  64                         continue;
  65                 }
  66                 security_token_set_privilege(token, privilege);
  67         }
  68 
  69         return NT_STATUS_OK;
  70 }
  71 
  72 /*
  73   setup the privilege mask for this security token based on our
  74   local SAM
  75 */
  76 NTSTATUS samdb_privilege_setup(struct tevent_context *ev_ctx, 
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  77                                struct loadparm_context *lp_ctx, struct security_token *token)
  78 {
  79         void *samctx;
  80         TALLOC_CTX *mem_ctx;
  81         int i;
  82         NTSTATUS status;
  83 
  84         /* Shortcuts to prevent recursion and avoid lookups */
  85         if (token->user_sid == NULL) {
  86                 token->privilege_mask = 0;
  87                 return NT_STATUS_OK;
  88         }
  89 
  90         if (security_token_is_system(token)) {
  91                 token->privilege_mask = ~0;
  92                 return NT_STATUS_OK;
  93         }
  94 
  95         if (security_token_is_anonymous(token)) {
  96                 token->privilege_mask = 0;
  97                 return NT_STATUS_OK;
  98         }
  99 
 100         mem_ctx = talloc_new(token);
 101         samctx = samdb_connect(mem_ctx, ev_ctx, lp_ctx, system_session(mem_ctx, lp_ctx));
 102         if (samctx == NULL) {
 103                 talloc_free(mem_ctx);
 104                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 105         }
 106 
 107         token->privilege_mask = 0;
 108         
 109         for (i=0;i<token->num_sids;i++) {
 110                 status = samdb_privilege_setup_sid(samctx, mem_ctx,
 111                                                    token, token->sids[i]);
 112                 if (!NT_STATUS_IS_OK(status)) {
 113                         talloc_free(mem_ctx);
 114                         return status;
 115                 }
 116         }
 117 
 118         talloc_free(mem_ctx);
 119 
 120         return NT_STATUS_OK;    
 121 }

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