source/winbindd/idmap_util.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    ID Mapping
   4    Copyright (C) Simo Sorce 2003
   5    Copyright (C) Jeremy Allison 2006
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.*/
  19
  20 #include "includes.h"
  21
  22 #undef DBGC_CLASS
  23 #define DBGC_CLASS DBGC_IDMAP
  24
  25 /*****************************************************************
  26  Returns the SID mapped to the given UID.
  27  If mapping is not possible returns an error.
  28 *****************************************************************/
  29
  30 NTSTATUS idmap_uid_to_sid(DOM_SID *sid, uid_t uid)
  31 {
  32         NTSTATUS ret;
  33         struct id_map map;
  34         struct id_map *maps[2];
  35
  36         DEBUG(10,("uid = [%lu]\n", (unsigned long)uid));
  37
  38         map.sid = sid;
  39         map.xid.type = ID_TYPE_UID;
  40         map.xid.id = uid;
  41
  42         maps[0] = &map;
  43         maps[1] = NULL;
  44
  45         ret = idmap_unixids_to_sids(maps);
  46         if ( ! NT_STATUS_IS_OK(ret)) {
  47                 DEBUG(10, ("error mapping uid [%lu]\n", (unsigned long)uid));
  48                 return ret;
  49         }
  50
  51         if (map.status != ID_MAPPED) {
  52                 DEBUG(10, ("uid [%lu] not mapped\n", (unsigned long)uid));
  53                 return NT_STATUS_NONE_MAPPED;
  54         }
  55
  56         return NT_STATUS_OK;
  57 }
  58
  59 /*****************************************************************
  60  Returns SID mapped to the given GID.
  61  If mapping is not possible returns an error.
  62 *****************************************************************/
  63
  64 NTSTATUS idmap_gid_to_sid(DOM_SID *sid, gid_t gid)
  65 {
  66         NTSTATUS ret;
  67         struct id_map map;
  68         struct id_map *maps[2];
  69
  70         DEBUG(10,("gid = [%lu]\n", (unsigned long)gid));
  71
  72         map.sid = sid;
  73         map.xid.type = ID_TYPE_GID;
  74         map.xid.id = gid;
  75
  76         maps[0] = &map;
  77         maps[1] = NULL;
  78
  79         ret = idmap_unixids_to_sids(maps);
  80         if ( ! NT_STATUS_IS_OK(ret)) {
  81                 DEBUG(10, ("error mapping gid [%lu]\n", (unsigned long)gid));
  82                 return ret;
  83         }
  84
  85         if (map.status != ID_MAPPED) {
  86                 DEBUG(10, ("gid [%lu] not mapped\n", (unsigned long)gid));
  87                 return NT_STATUS_NONE_MAPPED;
  88         }
  89
  90         return NT_STATUS_OK;
  91 }
  92
  93 /*****************************************************************
  94  Returns the UID mapped to the given SID.
  95  If mapping is not possible or SID maps to a GID returns an error.
  96 *****************************************************************/
  97
  98 NTSTATUS idmap_sid_to_uid(DOM_SID *sid, uid_t *uid)
  99 {
 100         NTSTATUS ret;
 101         struct id_map map;
 102         struct id_map *maps[2];
 103
 104         DEBUG(10,("idmap_sid_to_uid: sid = [%s]\n", sid_string_dbg(sid)));
 105
 106         map.sid = sid;
 107         map.xid.type = ID_TYPE_UID;
 108
 109         maps[0] = &map;
 110         maps[1] = NULL;
 111
 112         ret = idmap_sids_to_unixids(maps);
 113         if ( ! NT_STATUS_IS_OK(ret)) {
 114                 DEBUG(10, ("error mapping sid [%s] to uid\n",
 115                            sid_string_dbg(sid)));
 116                 return ret;
 117         }
 118
 119         if ((map.status != ID_MAPPED) || (map.xid.type != ID_TYPE_UID)) {
 120                 DEBUG(10, ("sid [%s] not mapped to an uid [%u,%u,%u]\n",
 121                            sid_string_dbg(sid),
 122                            map.status,
 123                            map.xid.type,
 124                            map.xid.id));
 125                 return NT_STATUS_NONE_MAPPED;
 126         }
 127
 128         *uid = map.xid.id;
 129
 130         return NT_STATUS_OK;
 131 }
 132
 133 /*****************************************************************
 134  Returns the GID mapped to the given SID.
 135  If mapping is not possible or SID maps to a UID returns an error.
 136 *****************************************************************/
 137
 138 NTSTATUS idmap_sid_to_gid(DOM_SID *sid, gid_t *gid)
 139 {
 140         NTSTATUS ret;
 141         struct id_map map;
 142         struct id_map *maps[2];
 143
 144         DEBUG(10,("idmap_sid_to_gid: sid = [%s]\n", sid_string_dbg(sid)));
 145
 146         map.sid = sid;
 147         map.xid.type = ID_TYPE_GID;
 148
 149         maps[0] = &map;
 150         maps[1] = NULL;
 151
 152         ret = idmap_sids_to_unixids(maps);
 153         if ( ! NT_STATUS_IS_OK(ret)) {
 154                 DEBUG(10, ("error mapping sid [%s] to gid\n",
 155                            sid_string_dbg(sid)));
 156                 return ret;
 157         }
 158
 159         if ((map.status != ID_MAPPED) || (map.xid.type != ID_TYPE_GID)) {
 160                 DEBUG(10, ("sid [%s] not mapped to a gid [%u,%u]\n",
 161                            sid_string_dbg(sid),
 162                            map.status,
 163                            map.xid.type));
 164                 return NT_STATUS_NONE_MAPPED;
 165         }
 166
 167         *gid = map.xid.id;
 168
 169         return NT_STATUS_OK;
 170 }