source/nsswitch/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 2 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, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.*/
  20
  21 #include "includes.h"
  22
  23 #undef DBGC_CLASS
  24 #define DBGC_CLASS DBGC_IDMAP
  25
  26 /*****************************************************************
  27  Returns the SID mapped to the given UID.
  28  If mapping is not possible returns an error.
  29 *****************************************************************/
  30
  31 NTSTATUS idmap_uid_to_sid(DOM_SID *sid, uid_t uid)
  32 {
  33         NTSTATUS ret;
  34         struct id_map map;
  35         struct id_map *maps[2];
  36
  37         DEBUG(10,("uid = [%lu]\n", (unsigned long)uid));
  38
  39         map.sid = sid;
  40         map.xid.type = ID_TYPE_UID;
  41         map.xid.id = uid;
  42
  43         maps[0] = &map;
  44         maps[1] = NULL;
  45
  46         ret = idmap_unixids_to_sids(maps);
  47         if ( ! NT_STATUS_IS_OK(ret)) {
  48                 DEBUG(10, ("error mapping uid [%lu]\n", (unsigned long)uid));
  49                 return ret;
  50         }
  51
  52         if (map.status != ID_MAPPED) {
  53                 DEBUG(10, ("uid [%lu] not mapped\n", (unsigned long)uid));
  54                 return NT_STATUS_NONE_MAPPED;
  55         }
  56
  57         return NT_STATUS_OK;
  58 }
  59
  60 /*****************************************************************
  61  Returns SID mapped to the given GID.
  62  If mapping is not possible returns an error.
  63 *****************************************************************/
  64
  65 NTSTATUS idmap_gid_to_sid(DOM_SID *sid, gid_t gid)
  66 {
  67         NTSTATUS ret;
  68         struct id_map map;
  69         struct id_map *maps[2];
  70
  71         DEBUG(10,("gid = [%lu]\n", (unsigned long)gid));
  72
  73         map.sid = sid;
  74         map.xid.type = ID_TYPE_GID;
  75         map.xid.id = gid;
  76
  77         maps[0] = &map;
  78         maps[1] = NULL;
  79
  80         ret = idmap_unixids_to_sids(maps);
  81         if ( ! NT_STATUS_IS_OK(ret)) {
  82                 DEBUG(10, ("error mapping gid [%lu]\n", (unsigned long)gid));
  83                 return ret;
  84         }
  85
  86         if (map.status != ID_MAPPED) {
  87                 DEBUG(10, ("gid [%lu] not mapped\n", (unsigned long)gid));
  88                 return NT_STATUS_NONE_MAPPED;
  89         }
  90
  91         return NT_STATUS_OK;
  92 }
  93
  94 /*****************************************************************
  95  Returns the UID mapped to the given SID.
  96  If mapping is not possible or SID maps to a GID returns an error.
  97 *****************************************************************/
  98
  99 NTSTATUS idmap_sid_to_uid(DOM_SID *sid, uid_t *uid)
 100 {
 101         NTSTATUS ret;
 102         struct id_map map;
 103         struct id_map *maps[2];
 104
 105         DEBUG(10,("idmap_sid_to_uid: sid = [%s]\n", sid_string_static(sid)));
 106
 107         map.sid = sid;
 108         map.xid.type = ID_TYPE_UID;
 109
 110         maps[0] = &map;
 111         maps[1] = NULL;
 112
 113         ret = idmap_sids_to_unixids(maps);
 114         if ( ! NT_STATUS_IS_OK(ret)) {
 115                 DEBUG(10, ("error mapping sid [%s] to uid\n",
 116                            sid_string_static(sid)));
 117                 return ret;
 118         }
 119
 120         if ((map.status != ID_MAPPED) || (map.xid.type != ID_TYPE_UID)) {
 121                 DEBUG(10, ("sid [%s] not mapped to an uid [%u,%u,%u]\n",
 122                            sid_string_static(sid),
 123                            map.status,
 124                            map.xid.type,
 125                            map.xid.id));
 126                 return NT_STATUS_NONE_MAPPED;
 127         }
 128
 129         *uid = map.xid.id;
 130
 131         return NT_STATUS_OK;
 132 }
 133
 134 /*****************************************************************
 135  Returns the GID mapped to the given SID.
 136  If mapping is not possible or SID maps to a UID returns an error.
 137 *****************************************************************/
 138
 139 NTSTATUS idmap_sid_to_gid(DOM_SID *sid, gid_t *gid)
 140 {
 141         NTSTATUS ret;
 142         struct id_map map;
 143         struct id_map *maps[2];
 144
 145         DEBUG(10,("idmap_sid_to_gid: sid = [%s]\n", sid_string_static(sid)));
 146
 147         map.sid = sid;
 148         map.xid.type = ID_TYPE_GID;
 149
 150         maps[0] = &map;
 151         maps[1] = NULL;
 152
 153         ret = idmap_sids_to_unixids(maps);
 154         if ( ! NT_STATUS_IS_OK(ret)) {
 155                 DEBUG(10, ("error mapping sid [%s] to gid\n",
 156                            sid_string_static(sid)));
 157                 return ret;
 158         }
 159
 160         if ((map.status != ID_MAPPED) || (map.xid.type != ID_TYPE_GID)) {
 161                 DEBUG(10, ("sid [%s] not mapped to an gid [%u,%u,%u]\n",
 162                            sid_string_static(sid),
 163                            map.status,
 164                            map.xid.type,
 165                            map.xid.id));
 166                 return NT_STATUS_NONE_MAPPED;
 167         }
 168
 169         *gid = map.xid.id;
 170
 171         return NT_STATUS_OK;
 172 }