source: vendor/3.6.9/source3/winbindd/idmap_passdb.c

/* 
   Unix SMB/CIFS implementation.

   idmap PASSDB backend

   Copyright (C) Simo Sorce 2006

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "idmap.h"
#include "passdb.h"

#undef DBGC_CLASS
#define DBGC_CLASS DBGC_IDMAP

/*****************************
 Initialise idmap database. 
*****************************/

static NTSTATUS idmap_pdb_init(struct idmap_domain *dom)
{       
        return NT_STATUS_OK;
}

/**********************************
 lookup a set of unix ids. 
**********************************/

static NTSTATUS idmap_pdb_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
{
        int i;

        for (i = 0; ids[i]; i++) {

                /* unmapped by default */
                ids[i]->status = ID_UNMAPPED;

                switch (ids[i]->xid.type) {
                case ID_TYPE_UID:
                        if (pdb_uid_to_sid((uid_t)ids[i]->xid.id, ids[i]->sid)) {
                                ids[i]->status = ID_MAPPED;
                        }
                        break;
                case ID_TYPE_GID:
                        if (pdb_gid_to_sid((gid_t)ids[i]->xid.id, ids[i]->sid)) {
                                ids[i]->status = ID_MAPPED;
                        }
                        break;
                default: /* ?? */
                        ids[i]->status = ID_UNKNOWN;
                }
        }

        return NT_STATUS_OK;
}

/**********************************
 lookup a set of sids. 
**********************************/

static NTSTATUS idmap_pdb_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
{
        int i;

        for (i = 0; ids[i]; i++) {
                enum lsa_SidType type;
                union unid_t id;

                if (pdb_sid_to_id(ids[i]->sid, &id, &type)) {
                        switch (type) {
                        case SID_NAME_USER:
                                ids[i]->xid.id = id.uid;
                                ids[i]->xid.type = ID_TYPE_UID;
                                ids[i]->status = ID_MAPPED;
                                break;

                        case SID_NAME_DOM_GRP:
                        case SID_NAME_ALIAS:
                        case SID_NAME_WKN_GRP:
                                ids[i]->xid.id = id.gid;
                                ids[i]->xid.type = ID_TYPE_GID;
                                ids[i]->status = ID_MAPPED;
                                break;

                        default: /* ?? */
                                /* make sure it is marked as unmapped */
                                ids[i]->status = ID_UNKNOWN;
                                break;
                        }
                } else {
                        /* Query Failed */
                        ids[i]->status = ID_UNMAPPED;
                }
        }

        return NT_STATUS_OK;
}

/**********************************
 Close the idmap tdb instance
**********************************/

static struct idmap_methods passdb_methods = {

        .init = idmap_pdb_init,
        .unixids_to_sids = idmap_pdb_unixids_to_sids,
        .sids_to_unixids = idmap_pdb_sids_to_unixids,
};

NTSTATUS idmap_passdb_init(void)
{
        return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "passdb", &passdb_methods);
}