/* incl_ugid.h -- uid/gid handling defs

   Copyright 2009 Free Software Foundation, Inc.

   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/>.  */

extern	void	rgrpfile();
extern	void	rpwfile();
extern	void	un_rpwfile();
extern	void	dump_pwfile();
extern	void	produser();
extern	int	isvuser(const uid_t);
extern	int_ugid_t	lookup_gname(const char *);
extern	int_ugid_t	lookup_uname(const char *);
extern	char	*homedof(const int_ugid_t);
extern	char	*prin_uname(const uid_t);
extern	char	*prin_gname(const gid_t);
extern	char	*unameproc(char *, const char *, const uid_t);
extern	char	**gen_glist(const char *);
extern	char	**gen_ulist(const char *);
#ifdef	HAVE_GETGROUPS
extern	int	get_suppgrps(const uid_t, gid_t **);
extern	char	Requires_suppgrps;
#endif

extern	char	Using_dumpfile;

/* Unknown user and groups */

#define	UNKNOWN_UID	(-1)
#define	UNKNOWN_GID	(-1)

extern	uid_t	Daemuid,
		Realuid,
		Effuid;
extern	gid_t	Realgid;
extern	int_ugid_t	lastgid;

extern	ULONG	Fileprivs;

/* Check that uid assignments make sense */

#ifdef	HAVE_SETEUID
#if	defined(NHONSUID) || defined(DEBUG)
#define	INIT_DAEMUID	if  ((LONG) (chk_uid = lookup_uname(BATCHUNAME)) == UNKNOWN_UID)\
				Daemuid = ROOTID;\
			else  {\
				Daemuid = chk_uid;\
				seteuid(Realuid);\
			}

#define	SCRAMBLID_CHECK	if  (Realuid != ROOTID  &&  Effuid != Daemuid  &&  Effuid != ROOTID)  {\
				print_error(8000);\
				exit(E_SETUP);\
			}
#else  /* HAVE_SETEUID normal case no debug */
#define	INIT_DAEMUID	Daemuid = Effuid; seteuid(Realuid);
#define	SCRAMBLID_CHECK
#endif /* No-honour setuid or debug */

#define	SWAP_TO(ID) seteuid(ID)

#else  /* !HAVE_SETEUID */
#ifdef	ID_SWAP
#if	defined(NHONSUID) || defined(DEBUG)
#define	INIT_DAEMUID	if  ((LONG) (chk_uid = lookup_uname(BATCHUNAME)) == UNKNOWN_UID)\
				Daemuid = ROOTID;\
			else  {\
				Daemuid = chk_uid;\
				if  (Effuid != ROOTID)\
					setuid(Realuid);\
			}

#define	SCRAMBLID_CHECK	if  (Realuid != ROOTID  &&  Effuid != Daemuid  &&  Effuid != ROOTID)  {\
				print_error(8000);\
				exit(E_SETUP);\
			}

#define	SWAP_TO(ID) if (Daemuid != ROOTID && Realuid != ROOTID && Effuid != ROOTID) setuid(ID)

#else  /* Not no-honour setuid or debug */

#define	INIT_DAEMUID	Daemuid = Effuid;if  (Daemuid != ROOTID) setuid(Realuid);
#define	SCRAMBLID_CHECK

#define	SWAP_TO(ID) if (Daemuid != ROOTID && Realuid != ROOTID) setuid(ID)
#endif /* No-honour setuid or debug */

#else  /* No ID_SWAP */

#define	INIT_DAEMUID	Daemuid = Effuid;
#define	SCRAMBLID_CHECK
#define	SWAP_TO(ID)
#endif
#endif /* ! HAVE_SETEUID */
