/*
 * CDE - Common Desktop Environment
 *
 * Copyright (c) 1993-2012, The Open Group. All rights reserved.
 *
 * These libraries and programs are free software; you can
 * redistribute them and/or modify them under the terms of the GNU
 * Lesser General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * These libraries and programs are distributed in the hope that
 * they will be useful, but WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with these librararies and programs; if not, write
 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
 * Floor, Boston, MA 02110-1301 USA
 */
/* $XConsortium: struid.c /main/3 1995/11/01 18:51:23 rswiston $ */
/***************************************************************
*                                                              *
*                      AT&T - PROPRIETARY                      *
*                                                              *
*         THIS IS PROPRIETARY SOURCE CODE LICENSED BY          *
*                          AT&T CORP.                          *
*                                                              *
*                Copyright (c) 1995 AT&T Corp.                 *
*                     All Rights Reserved                      *
*                                                              *
*           This software is licensed by AT&T Corp.            *
*       under the terms and conditions of the license in       *
*       http://www.research.att.com/orgs/ssr/book/reuse        *
*                                                              *
*               This software was created by the               *
*           Software Engineering Research Department           *
*                    AT&T Bell Laboratories                    *
*                                                              *
*               For further information contact                *
*                     gsf@research.att.com                     *
*                                                              *
***************************************************************/

/* : : generated by proto : : */

#if !defined(__PROTO__)
#if defined(__STDC__) || defined(__cplusplus) || defined(_proto) || defined(c_plusplus)
#if defined(__cplusplus)
#define __MANGLE__	"C"
#else
#define __MANGLE__
#endif
#define __STDARG__
#define __PROTO__(x)	x
#define __OTORP__(x)
#define __PARAM__(n,o)	n
#if !defined(__STDC__) && !defined(__cplusplus)
#if !defined(c_plusplus)
#define const
#endif
#define signed
#define void		int
#define volatile
#define __V_		char
#else
#define __V_		void
#endif
#else
#define __PROTO__(x)	()
#define __OTORP__(x)	x
#define __PARAM__(n,o)	o
#define __MANGLE__
#define __V_		char
#define const
#define signed
#define void		int
#define volatile
#endif
#if defined(__cplusplus) || defined(c_plusplus)
#define __VARARG__	...
#else
#define __VARARG__
#endif
#if defined(__STDARG__)
#define __VA_START__(p,a)	va_start(p,a)
#else
#define __VA_START__(p,a)	va_start(p)
#endif
#endif
#if defined(__STDPP__directive) && defined(__STDPP__hide)
__STDPP__directive pragma pp:hide getpwnam getpwuid
#else
#define getpwnam	______getpwnam
#define getpwuid	______getpwuid
#endif

#include <ast.h>
#include <hash.h>
/* on linux pwd.h can include FILE without stdio.h which clashes with sfio_t */
#if defined(linux)
 #ifndef __FILE_defined
  #define __FILE_defined 1
 #endif
#endif
#include <pwd.h>

#if defined(__STDPP__directive) && defined(__STDPP__hide)
__STDPP__directive pragma pp:nohide getpwnam getpwuid
#else
#undef	getpwnam
#undef	getpwuid
#endif

extern __MANGLE__ struct passwd*	getpwnam __PROTO__((const char*));
extern __MANGLE__ struct passwd*	getpwuid __PROTO__((uid_t));

typedef struct
{
	HASH_HEADER;
	int	id;
} bucket;

/*
 * return uid number given uid name
 * -1 on first error for a given name
 * -2 on subsequent errors for a given name
 */

int
struid __PARAM__((const char* name), (name)) __OTORP__(const char* name;){
	register struct passwd*	pw;
	register bucket*	b;
	char*			e;

	static Hash_table_t*	uidtab;

	if (!uidtab && !(uidtab = hashalloc(NiL, HASH_set, HASH_ALLOCATE, HASH_name, "uidnam", 0))) return(-1);
	if (b = (bucket*)hashlook(uidtab, name, HASH_LOOKUP|HASH_FIXED, (char*)sizeof(bucket))) return(b->id);
	if (!(b = (bucket*)hashlook(uidtab, NiL, HASH_CREATE|HASH_FIXED, (char*)sizeof(bucket)))) return(-1);
	if (pw = getpwnam(name)) return(b->id = pw->pw_uid);
	b->id = strtol(name, &e, 0);
	if (!*e && getpwuid(b->id)) return(b->id);
	b->id = -2;
	return(-1);
}