samba-mirror/source3/sam/idmap_util.c

/* 
   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

#if 0	/* NOT USED */

/**********************************************************************
 Get the free RID base if idmap is configured, otherwise return 0
**********************************************************************/

uint32 idmap_get_free_rid_base(void)
{
	uint32 low, high;
	if (idmap_get_free_rid_range(&low, &high)) {
		return low;
	}
	return 0;
}

/**********************************************************************
**********************************************************************/

BOOL idmap_check_ugid_is_in_free_range(uint32 id)
{
	uint32 low, high;

	if (!idmap_get_free_ugid_range(&low, &high)) {
		return False;
	}
	if (id < low || id > high) {
		return False;
	}
	return True;
}

/**********************************************************************
**********************************************************************/

BOOL idmap_check_rid_is_in_free_range(uint32 rid)
{
	uint32 low, high;

	if (!idmap_get_free_rid_range(&low, &high)) {
		return False;
	}
	if (rid < algorithmic_rid_base()) {
		return True;
	}

	if (rid < low || rid > high) {
		return False;
	}

	return True;
}

/**********************************************************************
 if it is a foreign SID or if the SID is in the free range, return true
**********************************************************************/

BOOL idmap_check_sid_is_in_free_range(const DOM_SID *sid)
{
	if (sid_compare_domain(get_global_sam_sid(), sid) == 0) {
	
		uint32 rid;

		if (sid_peek_rid(sid, &rid)) {
			return idmap_check_rid_is_in_free_range(rid);
		}

		return False;
	}

	return True;
}

#endif	/* NOT USED */

/*****************************************************************
 Returns SID pointer.
*****************************************************************/  

NTSTATUS idmap_uid_to_sid(DOM_SID *sid, uid_t uid, int flags)
{
	unid_t id;

	DEBUG(10,("idmap_uid_to_sid: uid = [%lu]\n", (unsigned long)uid));

	flags |= ID_USERID;
	id.uid = uid;
	
	return idmap_get_sid_from_id(sid, id, flags);
}

/*****************************************************************
 Group mapping is used for gids that maps to Wellknown SIDs
 Returns SID pointer.
*****************************************************************/  

NTSTATUS idmap_gid_to_sid(DOM_SID *sid, gid_t gid, int flags)
{
	unid_t id;

	DEBUG(10,("idmap_gid_to_sid: gid = [%lu]\n", (unsigned long)gid));

	flags |= ID_GROUPID;
	id.gid = gid;

	return idmap_get_sid_from_id(sid, id, flags);
}

/*****************************************************************
 if it is a foreign sid or it is in idmap rid range check idmap,
 otherwise falls back to the legacy algorithmic mapping.
 Returns True if this name is a user sid and the conversion
 was done correctly, False if not.
*****************************************************************/  

NTSTATUS idmap_sid_to_uid(const DOM_SID *sid, uid_t *uid, uint32 flags)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
	unid_t id;

	DEBUG(10,("idmap_sid_to_uid: sid = [%s]\n", sid_string_static(sid)));

	flags |= ID_USERID;

	ret = idmap_get_id_from_sid(&id, (int *)&flags, sid);
	
	if ( NT_STATUS_IS_OK(ret) ) {
		DEBUG(10,("idmap_sid_to_uid: uid = [%lu]\n", (unsigned long)id.uid));
		*uid = id.uid;
	} 

	return ret;

}

/*****************************************************************
 *THE CANONICAL* convert SID to gid function.
 if it is a foreign sid or it is in idmap rid range check idmap,
 otherwise falls back to the legacy algorithmic mapping.
 Group mapping is used for gids that maps to Wellknown SIDs
 Returns True if this name is a user sid and the conversion
 was done correctly, False if not.
*****************************************************************/  

NTSTATUS idmap_sid_to_gid(const DOM_SID *sid, gid_t *gid, uint32 flags)
{
	NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
	unid_t id;

	DEBUG(10,("sid_to_gid: sid = [%s]\n", sid_string_static(sid)));

	flags |= ID_GROUPID;

	ret = idmap_get_id_from_sid(&id, (int *)&flags, sid);
	
	if ( NT_STATUS_IS_OK(ret) ) 
	{
		DEBUG(10,("idmap_sid_to_gid: gid = [%lu]\n", (unsigned long)id.gid));
		*gid = id.gid;
	}

	return ret;
}