source/nsswitch/idmap_passdb.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    idmap PASSDB backend
   5
   6    Copyright (C) Simo Sorce 2006
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24
  25 #undef DBGC_CLASS
  26 #define DBGC_CLASS DBGC_IDMAP
  27
  28 /*****************************
  29  Initialise idmap database.
  30 *****************************/
  31
  32 static NTSTATUS idmap_pdb_init(struct idmap_domain *dom)
  33 {
  34         dom->initialized = True;
  35         return NT_STATUS_OK;
  36 }
  37
  38 /**********************************
  39  lookup a set of unix ids.
  40 **********************************/
  41
  42 static NTSTATUS idmap_pdb_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
  43 {
  44         int i;
  45
  46         if (! dom->initialized) {
  47                 return NT_STATUS_UNSUCCESSFUL;
  48         }
  49
  50         for (i = 0; ids[i]; i++) {
  51
  52                 /* unmapped by default */
  53                 ids[i]->status = ID_UNMAPPED;
  54
  55                 switch (ids[i]->xid.type) {
  56                 case ID_TYPE_UID:
  57                         if (pdb_uid_to_sid((uid_t)ids[i]->xid.id, ids[i]->sid)) {
  58                                 ids[i]->status = ID_MAPPED;
  59                         }
  60                         break;
  61                 case ID_TYPE_GID:
  62                         if (pdb_gid_to_sid((gid_t)ids[i]->xid.id, ids[i]->sid)) {
  63                                 ids[i]->status = ID_MAPPED;
  64                         }
  65                         break;
  66                 default: /* ?? */
  67                         ids[i]->status = ID_UNKNOWN;
  68                 }
  69         }
  70
  71         return NT_STATUS_OK;
  72 }
  73
  74 /**********************************
  75  lookup a set of sids.
  76 **********************************/
  77
  78 static NTSTATUS idmap_pdb_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
  79 {
  80         int i;
  81
  82         if (! dom->initialized) {
  83                 return NT_STATUS_UNSUCCESSFUL;
  84         }
  85
  86         for (i = 0; ids[i]; i++) {
  87                 enum lsa_SidType type;
  88                 union unid_t id;
  89
  90                 if (pdb_sid_to_id(ids[i]->sid, &id, &type)) {
  91                         switch (type) {
  92                         case SID_NAME_USER:
  93                                 ids[i]->xid.id = id.uid;
  94                                 ids[i]->xid.type = ID_TYPE_UID;
  95                                 ids[i]->status = ID_MAPPED;
  96                                 break;
  97
  98                         case SID_NAME_DOM_GRP:
  99                         case SID_NAME_ALIAS:
 100                         case SID_NAME_WKN_GRP:
 101                                 ids[i]->xid.id = id.gid;
 102                                 ids[i]->xid.type = ID_TYPE_GID;
 103                                 ids[i]->status = ID_MAPPED;
 104                                 break;
 105
 106                         default: /* ?? */
 107                                 /* make sure it is marked as unmapped */
 108                                 ids[i]->status = ID_UNKNOWN;
 109                                 break;
 110                         }
 111                 } else {
 112                         /* Query Failed */
 113                         ids[i]->status = ID_UNMAPPED;
 114                 }
 115         }
 116
 117         return NT_STATUS_OK;
 118 }
 119
 120 /**********************************
 121  Close the idmap tdb instance
 122 **********************************/
 123
 124 static NTSTATUS idmap_pdb_close(struct idmap_domain *dom)
 125 {
 126         return NT_STATUS_OK;
 127 }
 128
 129 static struct idmap_methods passdb_methods = {
 130
 131         .init = idmap_pdb_init,
 132         .unixids_to_sids = idmap_pdb_unixids_to_sids,
 133         .sids_to_unixids = idmap_pdb_sids_to_unixids,
 134         .close_fn =idmap_pdb_close
 135 };
 136
 137 NTSTATUS idmap_passdb_init(void)
 138 {
 139         return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "passdb", &passdb_methods);
 140 }