source/sam/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 SID pointer.
  28 *****************************************************************/
  29
  30 NTSTATUS idmap_uid_to_sid(DOM_SID *sid, uid_t uid, int flags)
  31 {
  32         unid_t id;
  33
  34         DEBUG(10,("idmap_uid_to_sid: uid = [%lu]\n", (unsigned long)uid));
  35
  36         id.uid = uid;
  37
  38         return idmap_get_sid_from_id(sid, id, ID_USERID, flags);
  39 }
  40
  41 /*****************************************************************
  42  Group mapping is used for gids that maps to Wellknown SIDs
  43  Returns SID pointer.
  44 *****************************************************************/
  45
  46 NTSTATUS idmap_gid_to_sid(DOM_SID *sid, gid_t gid, int flags)
  47 {
  48         unid_t id;
  49
  50         DEBUG(10,("idmap_gid_to_sid: gid = [%lu]\n", (unsigned long)gid));
  51
  52         id.gid = gid;
  53
  54         return idmap_get_sid_from_id(sid, id, ID_GROUPID, flags);
  55 }
  56
  57 /*****************************************************************
  58  if it is a foreign sid or it is in idmap rid range check idmap,
  59  otherwise falls back to the legacy algorithmic mapping.
  60  Returns True if this name is a user sid and the conversion
  61  was done correctly, False if not.
  62 *****************************************************************/
  63
  64 NTSTATUS idmap_sid_to_uid(const DOM_SID *sid, uid_t *uid, int flags)
  65 {
  66         NTSTATUS ret;
  67         enum idmap_type id_type;
  68         unid_t id;
  69
  70         DEBUG(10,("idmap_sid_to_uid: sid = [%s]\n", sid_string_static(sid)));
  71
  72         /* For the LDAP and tdb backends we must *KNOW* what we're looking for.
  73            This interface design *SUCKS* ! JRA. */
  74
  75         id_type = ID_USERID;
  76         ret = idmap_get_id_from_sid(&id, &id_type, sid, flags);
  77
  78         if (!NT_STATUS_IS_OK(ret)) {
  79                 return ret;
  80         }
  81
  82         if (id_type != ID_USERID) {
  83                 return NT_STATUS_NONE_MAPPED;
  84         }
  85
  86         DEBUG(10,("idmap_sid_to_uid: uid = [%lu]\n", (unsigned long)id.uid));
  87         *uid = id.uid;
  88
  89         return NT_STATUS_OK;
  90 }
  91
  92 /*****************************************************************
  93  *THE CANONICAL* convert SID to gid function.
  94  if it is a foreign sid or it is in idmap rid range check idmap,
  95  otherwise falls back to the legacy algorithmic mapping.
  96  Group mapping is used for gids that maps to Wellknown SIDs
  97  Returns True if this name is a user sid and the conversion
  98  was done correctly, False if not.
  99 *****************************************************************/
 100
 101 NTSTATUS idmap_sid_to_gid(const DOM_SID *sid, gid_t *gid, int flags)
 102 {
 103         NTSTATUS ret;
 104         enum idmap_type id_type;
 105         unid_t id;
 106
 107         DEBUG(10,("sid_to_gid: sid = [%s]\n", sid_string_static(sid)));
 108
 109         /* For the LDAP and tdb backends we must *KNOW* what we're looking for.
 110            This interface design *SUCKS* ! JRA. */
 111
 112         id_type = ID_GROUPID;
 113         ret = idmap_get_id_from_sid(&id, &id_type, sid, flags);
 114
 115         if (!NT_STATUS_IS_OK(ret)) {
 116                 return ret;
 117         }
 118
 119         if (id_type != ID_GROUPID) {
 120                 return NT_STATUS_NONE_MAPPED;
 121         }
 122
 123         DEBUG(10,("idmap_sid_to_gid: gid = [%lu]\n", (unsigned long)id.gid));
 124         *gid = id.gid;
 125
 126         return NT_STATUS_OK;
 127 }