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_t 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 local_authority_users[] = {
  43         { 0, "Local" },
  44         { 1, "Console Logon" },
  45         { 0, NULL}};
  46
  47 static const struct rid_name_map creator_owner_users[] = {
  48         { 0, "Creator Owner" },
  49         { 1, "Creator Group" },
  50         { 2, "Creator Owner Server" },
  51         { 3, "Creator Group Server" },
  52         { 4, "Owner Rights" },
  53         { 0, NULL}};
  54
  55 static const struct rid_name_map nt_authority_users[] = {
  56         {  1, "Dialup" },
  57         {  2, "Network"},
  58         {  3, "Batch"},
  59         {  4, "Interactive"},
  60         {  6, "Service"},
  61         {  7, "Anonymous Logon"},
  62         {  8, "Proxy"},
  63         {  9, "Enterprise Domain Controllers"},
  64         { 10, "Self"},
  65         { 11, "Authenticated Users"},
  66         { 12, "Restricted"},
  67         { 13, "Terminal Server User"},
  68         { 14, "Remote Interactive Logon"},
  69         { 15, "This Organization"},
  70         { 17, "IUSR"},
  71         { 18, "SYSTEM"},
  72         { 19, "Local Service"},
  73         { 20, "Network Service"},
  74         {  0,  NULL}};
  75
  76 static struct sid_name_map_info special_domains[] = {
  77         { &global_sid_World_Domain, "", everyone_users },
  78         { &global_sid_Local_Authority, "", local_authority_users },
  79         { &global_sid_Creator_Owner_Domain, "", creator_owner_users },
  80         { &global_sid_NT_Authority, "NT Authority", nt_authority_users },
  81         { NULL, NULL, NULL }};
  82
  83 bool sid_check_is_wellknown_domain(const struct dom_sid *sid, const char **name)
  84 {
  85         int i;
  86
  87         for (i=0; special_domains[i].sid != NULL; i++) {
  88                 if (dom_sid_equal(sid, special_domains[i].sid)) {
  89                         if (name != NULL) {
  90                                 *name = special_domains[i].name;
  91                         }
  92                         return True;
  93                 }
  94         }
  95         return False;
  96 }
  97
  98 bool sid_check_is_in_wellknown_domain(const struct dom_sid *sid)
  99 {
 100         struct dom_sid dom_sid;
 101
 102         sid_copy(&dom_sid, sid);
 103         sid_split_rid(&dom_sid, NULL);
 104
 105         return sid_check_is_wellknown_domain(&dom_sid, NULL);
 106 }
 107
 108 /**************************************************************************
 109  Looks up a known username from one of the known domains.
 110 ***************************************************************************/
 111
 112 bool lookup_wellknown_sid(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
 113                           const char **domain, const char **name)
 114 {
 115         int i;
 116         struct dom_sid dom_sid;
 117         uint32_t rid;
 118         const struct rid_name_map *users = NULL;
 119         struct dom_sid_buf buf;
 120
 121         sid_copy(&dom_sid, sid);
 122         if (!sid_split_rid(&dom_sid, &rid)) {
 123                 DEBUG(2, ("Could not split rid from SID\n"));
 124                 return False;
 125         }
 126
 127         for (i=0; special_domains[i].sid != NULL; i++) {
 128                 if (dom_sid_equal(&dom_sid, special_domains[i].sid)) {
 129                         *domain = talloc_strdup(mem_ctx,
 130                                                 special_domains[i].name);
 131                         users = special_domains[i].known_users;
 132                         break;
 133                 }
 134         }
 135
 136         if (users == NULL) {
 137                 DEBUG(10, ("SID %s is no special sid\n",
 138                            dom_sid_str_buf(sid, &buf)));
 139                 return False;
 140         }
 141
 142         for (i=0; users[i].name != NULL; i++) {
 143                 if (rid == users[i].rid) {
 144                         *name = talloc_strdup(mem_ctx, users[i].name);
 145                         return True;
 146                 }
 147         }
 148
 149         DEBUG(10, ("RID of special SID %s not found\n",
 150                    dom_sid_str_buf(sid, &buf)));
 151
 152         return False;
 153 }
 154
 155 /**************************************************************************
 156  Try and map a name to one of the well known SIDs.
 157 ***************************************************************************/
 158
 159 bool lookup_wellknown_name(TALLOC_CTX *mem_ctx, const char *name,
 160                            struct dom_sid *sid, const char **pdomain)
 161 {
 162         int i, j;
 163         const char *domain = *pdomain;
 164
 165         DEBUG(10,("map_name_to_wellknown_sid: looking up %s\\%s\n", domain, name));
 166
 167         for (i=0; special_domains[i].sid != NULL; i++) {
 168                 const struct rid_name_map *users =
 169                         special_domains[i].known_users;
 170
 171                 if (domain[0] != '\0') {
 172                         if (!strequal(domain, special_domains[i].name)) {
 173                                 continue;
 174                         }
 175                 }
 176
 177                 if (users == NULL)
 178                         continue;
 179
 180                 for (j=0; users[j].name != NULL; j++) {
 181                         if ( strequal(users[j].name, name) ) {
 182                                 sid_compose(sid, special_domains[i].sid,
 183                                             users[j].rid);
 184                                 *pdomain = talloc_strdup(
 185                                         mem_ctx, special_domains[i].name);
 186                                 return True;
 187                         }
 188                 }
 189         }
 190
 191         return False;
 192 }