source3/passdb/util_wellknown.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Lookup routines for well-known SIDs
   4    Copyright (C) Andrew Tridgell 1992-1998
   5    Copyright (C) Luke Kenneth Caseson Leighton 1998-1999
   6    Copyright (C) Jeremy Allison  1999
   7    Copyright (C) Volker Lendecke 2005
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "../libcli/security/dom_sid.h"
  25
  26 struct rid_name_map {
  27         uint32 rid;
  28         const char *name;
  29 };
  30
  31 struct sid_name_map_info
  32 {
  33         const struct dom_sid *sid;
  34         const char *name;
  35         const struct rid_name_map *known_users;
  36 };
  37
  38 static const struct rid_name_map everyone_users[] = {
  39         { 0, "Everyone" },
  40         { 0, NULL}};
  41
  42 static const struct rid_name_map creator_owner_users[] = {
  43         { 0, "Creator Owner" },
  44         { 1, "Creator Group" },
  45         { 0, NULL}};
  46
  47 static const struct rid_name_map nt_authority_users[] = {
  48         {  1, "Dialup" },
  49         {  2, "Network"},
  50         {  3, "Batch"},
  51         {  4, "Interactive"},
  52         {  6, "Service"},
  53         {  7, "AnonymousLogon"},
  54         {  7, "Anonymous Logon"},
  55         {  8, "Proxy"},
  56         {  9, "ServerLogon"},
  57         { 10, "Self"},
  58         { 11, "Authenticated Users"},
  59         { 12, "Restricted"},
  60         { 13, "Terminal Server User"},
  61         { 14, "Remote Interactive Logon"},
  62         { 15, "This Organization"},
  63         { 18, "SYSTEM"},
  64         { 19, "Local Service"},
  65         { 20, "Network Service"},
  66         {  0,  NULL}};
  67
  68 static struct sid_name_map_info special_domains[] = {
  69         { &global_sid_World_Domain, "", everyone_users },
  70         { &global_sid_Creator_Owner_Domain, "", creator_owner_users },
  71         { &global_sid_NT_Authority, "NT Authority", nt_authority_users },
  72         { NULL, NULL, NULL }};
  73
  74 bool sid_check_is_wellknown_domain(const struct dom_sid *sid, const char **name)
  75 {
  76         int i;
  77
  78         for (i=0; special_domains[i].sid != NULL; i++) {
  79                 if (dom_sid_equal(sid, special_domains[i].sid)) {
  80                         if (name != NULL) {
  81                                 *name = special_domains[i].name;
  82                         }
  83                         return True;
  84                 }
  85         }
  86         return False;
  87 }
  88
  89 bool sid_check_is_in_wellknown_domain(const struct dom_sid *sid)
  90 {
  91         struct dom_sid dom_sid;
  92         uint32 rid;
  93
  94         sid_copy(&dom_sid, sid);
  95         sid_split_rid(&dom_sid, &rid);
  96
  97         return sid_check_is_wellknown_domain(&dom_sid, NULL);
  98 }
  99
 100 /**************************************************************************
 101  Looks up a known username from one of the known domains.
 102 ***************************************************************************/
 103
 104 bool lookup_wellknown_sid(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
 105                           const char **domain, const char **name)
 106 {
 107         int i;
 108         struct dom_sid dom_sid;
 109         uint32 rid;
 110         const struct rid_name_map *users = NULL;
 111
 112         sid_copy(&dom_sid, sid);
 113         if (!sid_split_rid(&dom_sid, &rid)) {
 114                 DEBUG(2, ("Could not split rid from SID\n"));
 115                 return False;
 116         }
 117
 118         for (i=0; special_domains[i].sid != NULL; i++) {
 119                 if (dom_sid_equal(&dom_sid, special_domains[i].sid)) {
 120                         *domain = talloc_strdup(mem_ctx,
 121                                                 special_domains[i].name);
 122                         users = special_domains[i].known_users;
 123                         break;
 124                 }
 125         }
 126
 127         if (users == NULL) {
 128                 DEBUG(10, ("SID %s is no special sid\n", sid_string_dbg(sid)));
 129                 return False;
 130         }
 131
 132         for (i=0; users[i].name != NULL; i++) {
 133                 if (rid == users[i].rid) {
 134                         *name = talloc_strdup(mem_ctx, users[i].name);
 135                         return True;
 136                 }
 137         }
 138
 139         DEBUG(10, ("RID of special SID %s not found\n", sid_string_dbg(sid)));
 140
 141         return False;
 142 }
 143
 144 /**************************************************************************
 145  Try and map a name to one of the well known SIDs.
 146 ***************************************************************************/
 147
 148 bool lookup_wellknown_name(TALLOC_CTX *mem_ctx, const char *name,
 149                            struct dom_sid *sid, const char **domain)
 150 {
 151         int i, j;
 152
 153         DEBUG(10,("map_name_to_wellknown_sid: looking up %s\n", name));
 154
 155         for (i=0; special_domains[i].sid != NULL; i++) {
 156                 const struct rid_name_map *users =
 157                         special_domains[i].known_users;
 158
 159                 if (users == NULL)
 160                         continue;
 161
 162                 for (j=0; users[j].name != NULL; j++) {
 163                         if ( strequal(users[j].name, name) ) {
 164                                 sid_compose(sid, special_domains[i].sid,
 165                                             users[j].rid);
 166                                 *domain = talloc_strdup(
 167                                         mem_ctx, special_domains[i].name);
 168                                 return True;
 169                         }
 170                 }
 171         }
 172
 173         return False;
 174 }