source3/lib/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/security.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         { 2, "Creator Owner Server" },
  46         { 3, "Creator Group Server" },
  47         { 4, "Owner Rights" },
  48         { 0, NULL}};
  49
  50 static const struct rid_name_map nt_authority_users[] = {
  51         {  1, "Dialup" },
  52         {  2, "Network"},
  53         {  3, "Batch"},
  54         {  4, "Interactive"},
  55         {  6, "Service"},
  56         {  7, "Anonymous Logon"},
  57         {  8, "Proxy"},
  58         {  9, "Enterprise Domain Controllers"},
  59         { 10, "Self"},
  60         { 11, "Authenticated Users"},
  61         { 12, "Restricted"},
  62         { 13, "Terminal Server User"},
  63         { 14, "Remote Interactive Logon"},
  64         { 15, "This Organization"},
  65         { 17, "IUSR"},
  66         { 18, "SYSTEM"},
  67         { 19, "Local Service"},
  68         { 20, "Network Service"},
  69         {  0,  NULL}};
  70
  71 static struct sid_name_map_info special_domains[] = {
  72         { &global_sid_World_Domain, "", everyone_users },
  73         { &global_sid_Creator_Owner_Domain, "", creator_owner_users },
  74         { &global_sid_NT_Authority, "NT Authority", nt_authority_users },
  75         { NULL, NULL, NULL }};
  76
  77 bool sid_check_is_wellknown_domain(const struct dom_sid *sid, const char **name)
  78 {
  79         int i;
  80
  81         for (i=0; special_domains[i].sid != NULL; i++) {
  82                 if (dom_sid_equal(sid, special_domains[i].sid)) {
  83                         if (name != NULL) {
  84                                 *name = special_domains[i].name;
  85                         }
  86                         return True;
  87                 }
  88         }
  89         return False;
  90 }
  91
  92 bool sid_check_is_in_wellknown_domain(const struct dom_sid *sid)
  93 {
  94         struct dom_sid dom_sid;
  95
  96         sid_copy(&dom_sid, sid);
  97         sid_split_rid(&dom_sid, NULL);
  98
  99         return sid_check_is_wellknown_domain(&dom_sid, NULL);
 100 }
 101
 102 /**************************************************************************
 103  Looks up a known username from one of the known domains.
 104 ***************************************************************************/
 105
 106 bool lookup_wellknown_sid(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
 107                           const char **domain, const char **name)
 108 {
 109         int i;
 110         struct dom_sid dom_sid;
 111         uint32 rid;
 112         const struct rid_name_map *users = NULL;
 113
 114         sid_copy(&dom_sid, sid);
 115         if (!sid_split_rid(&dom_sid, &rid)) {
 116                 DEBUG(2, ("Could not split rid from SID\n"));
 117                 return False;
 118         }
 119
 120         for (i=0; special_domains[i].sid != NULL; i++) {
 121                 if (dom_sid_equal(&dom_sid, special_domains[i].sid)) {
 122                         *domain = talloc_strdup(mem_ctx,
 123                                                 special_domains[i].name);
 124                         users = special_domains[i].known_users;
 125                         break;
 126                 }
 127         }
 128
 129         if (users == NULL) {
 130                 DEBUG(10, ("SID %s is no special sid\n", sid_string_dbg(sid)));
 131                 return False;
 132         }
 133
 134         for (i=0; users[i].name != NULL; i++) {
 135                 if (rid == users[i].rid) {
 136                         *name = talloc_strdup(mem_ctx, users[i].name);
 137                         return True;
 138                 }
 139         }
 140
 141         DEBUG(10, ("RID of special SID %s not found\n", sid_string_dbg(sid)));
 142
 143         return False;
 144 }
 145
 146 /**************************************************************************
 147  Try and map a name to one of the well known SIDs.
 148 ***************************************************************************/
 149
 150 bool lookup_wellknown_name(TALLOC_CTX *mem_ctx, const char *name,
 151                            struct dom_sid *sid, const char **domain)
 152 {
 153         int i, j;
 154
 155         DEBUG(10,("map_name_to_wellknown_sid: looking up %s\n", name));
 156
 157         for (i=0; special_domains[i].sid != NULL; i++) {
 158                 const struct rid_name_map *users =
 159                         special_domains[i].known_users;
 160
 161                 if (users == NULL)
 162                         continue;
 163
 164                 for (j=0; users[j].name != NULL; j++) {
 165                         if ( strequal(users[j].name, name) ) {
 166                                 sid_compose(sid, special_domains[i].sid,
 167                                             users[j].rid);
 168                                 *domain = talloc_strdup(
 169                                         mem_ctx, special_domains[i].name);
 170                                 return True;
 171                         }
 172                 }
 173         }
 174
 175         return False;
 176 }