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/*
Unix SMB/CIFS implementation.
ID Mapping
Copyright (C) Simo Sorce 2003
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.*/
#include "includes.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_IDMAP
/*****************************************************************
*THE CANONICAL* convert uid_t to SID function.
Tries winbind first - then uses local lookup.
Returns SID pointer.
*****************************************************************/
DOM_SID *uid_to_sid(DOM_SID *psid, uid_t uid)
{
unid_t id;
DEBUG(10,("uid_to_sid: uid = [%d]\n", uid));
id.uid = uid;
if (NT_STATUS_IS_OK(idmap_get_sid_from_id(psid, id, ID_USERID))) {
DEBUG(10, ("uid_to_sid: sid = [%s]\n", sid_string_static(psid)));
return psid;
}
/* If mapping is not found in idmap try with traditional method,
then stores the result in idmap.
We may add a switch in future to allow smooth migrations to
idmap-only db ---Simo */
sid_copy(psid, get_global_sam_sid());
sid_append_rid(psid, fallback_pdb_uid_to_user_rid(uid));
DEBUG(10,("uid_to_sid: algorithmic %u -> %s\n", (unsigned int)uid, sid_string_static(psid)));
return psid;
}
/*****************************************************************
*THE CANONICAL* convert gid_t to SID function.
Tries winbind first - then uses local lookup.
Returns SID pointer.
*****************************************************************/
DOM_SID *gid_to_sid(DOM_SID *psid, gid_t gid)
{
GROUP_MAP map;
unid_t id;
DEBUG(10,("gid_to_sid: gid = [%d]\n", gid));
id.gid = gid;
if (NT_STATUS_IS_OK(idmap_get_sid_from_id(psid, id, ID_GROUPID))) {
DEBUG(10, ("gid_to_sid: sid = [%s]\n", sid_string_static(psid)));
return psid;
}
/* If mapping is not found in idmap try with traditional method,
then stores the result in idmap.
We may add a switch in future to allow smooth migrations to
idmap-only db ---Simo */
if (pdb_getgrgid(&map, gid, MAPPING_WITHOUT_PRIV)) {
sid_copy(psid, &map.sid);
} else {
sid_copy(psid, get_global_sam_sid());
sid_append_rid(psid, pdb_gid_to_group_rid(gid));
}
DEBUG(10,("gid_to_sid: algorithmic %u -> %s\n", (unsigned int)gid, sid_string_static(psid)));
return psid;
}
/*****************************************************************
*THE CANONICAL* convert SID to uid function.
Tries winbind first - then uses local lookup.
Returns True if this name is a user sid and the conversion
was done correctly, False if not. sidtype is set by this function.
*****************************************************************/
BOOL sid_to_uid(const DOM_SID *psid, uid_t *puid, enum SID_NAME_USE *sidtype)
{
unid_t id;
int type;
DEBUG(10,("sid_to_uid: sid = [%s]\n", sid_string_static(psid)));
*sidtype = SID_NAME_USER;
type = ID_USERID;
if (NT_STATUS_IS_OK(idmap_get_id_from_sid(&id, &type, psid))) {
DEBUG(10,("sid_to_uid: uid = [%d]\n", id.uid));
*puid = id.uid;
return True;
}
if (sid_compare_domain(get_global_sam_sid(), psid) == 0) {
BOOL result;
uint32 rid;
DEBUG(10,("sid_to_uid: sid is local [%s]\n", sid_string_static(get_global_sam_sid())));
if (!sid_peek_rid(psid, &rid)) {
DEBUG(0, ("sid_to_uid: Error extracting RID from SID\n!"));
return False;
}
if (!pdb_rid_is_user(rid)) {
DEBUG(3, ("sid_to_uid: RID %u is *NOT* a user\n", (unsigned)rid));
return False;
}
*puid = fallback_pdb_user_rid_to_uid(rid);
return True;
}
return False;
}
/*****************************************************************
*THE CANONICAL* convert SID to gid function.
Tries winbind first - then uses local lookup.
Returns True if this name is a user sid and the conversion
was done correctly, False if not.
*****************************************************************/
BOOL sid_to_gid(const DOM_SID *psid, gid_t *pgid, enum SID_NAME_USE *sidtype)
{
unid_t id;
int type;
DEBUG(10,("sid_to_gid: sid = [%s]\n", sid_string_static(psid)));
*sidtype = SID_NAME_ALIAS;
type = ID_GROUPID;
if (NT_STATUS_IS_OK(idmap_get_id_from_sid(&id, &type, psid))) {
DEBUG(10,("sid_to_gid: gid = [%d]\n", id.gid));
*pgid = id.gid;
return True;
}
if (sid_compare_domain(get_global_sam_sid(), psid) == 0) {
GROUP_MAP map;
BOOL result;
if (pdb_getgrsid(&map, *psid, MAPPING_WITHOUT_PRIV)) {
/* the SID is in the mapping table but not mapped */
if (map.gid==(gid_t)-1)
return False;
*pgid = map.gid;
*sidtype = map.sid_name_use;
return True;
} else {
uint32 rid;
if (!sid_peek_rid(psid, &rid)) {
DEBUG(0, ("sid_to_gid: Error extracting RID from SID\n!"));
return False;
}
if (pdb_rid_is_user(rid)) {
DEBUG(3, ("sid_to_gid: RID %u is *NOT* a group\n", (unsigned)rid));
return False;
}
*pgid = pdb_group_rid_to_gid(rid);
*sidtype = SID_NAME_ALIAS;
}
}
return False;
}
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