/* userspec.c -- Parse a user and group string.
- Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1989-1992, 1997, 1998 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
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. */
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
-\f
-#ifdef HAVE_CONFIG_H
-#include <config.h>
+
+#if HAVE_CONFIG_H
+# include <config.h>
#endif
#ifdef __GNUC__
# define alloca __builtin_alloca
#else
-# ifdef HAVE_ALLOCA_H
+# if HAVE_ALLOCA_H
# include <alloca.h>
# else
# ifdef _AIX
- #pragma alloca
+ # pragma alloca
# else
char *alloca ();
# endif
#include <pwd.h>
#include <grp.h>
-#ifdef HAVE_STRING_H
+#if HAVE_STRING_H
# include <string.h>
#else
# include <strings.h>
# endif
#endif
-#ifdef STDC_HEADERS
+#if STDC_HEADERS
# include <stdlib.h>
#endif
-#ifdef HAVE_UNISTD_H
+#if HAVE_UNISTD_H
# include <unistd.h>
#endif
struct group *getgrgid ();
#endif
-#ifdef _POSIX_SOURCE
-#define endpwent()
-#define endgrent()
+#ifndef HAVE_ENDGRENT
+# define endgrent() ((void) 0)
+#endif
+
+#ifndef HAVE_ENDPWENT
+# define endpwent() ((void) 0)
#endif
/* Perform the equivalent of the statement `dest = strdup (src);',
#define isdigit(c) ((c) >= '0' && (c) <= '9')
+#ifndef strdup
char *strdup ();
+#endif
/* Return nonzero if STR represents an unsigned decimal integer,
otherwise return 0. */
static int
-isnumber (str)
- const char *str;
+is_number (const char *str)
{
for (; *str; str++)
if (!isdigit (*str))
Return NULL if successful, a static error message string if not. */
const char *
-parse_user_spec (spec_arg, uid, gid, username_arg, groupname_arg)
- const char *spec_arg;
- uid_t *uid;
- gid_t *gid;
- char **username_arg, **groupname_arg;
+parse_user_spec (const char *spec_arg, uid_t *uid, gid_t *gid,
+ char **username_arg, char **groupname_arg)
{
static const char *tired = "virtual memory exhausted";
const char *error_msg;
if (u == NULL && g == NULL)
return "can not omit both user and group";
+#ifdef __DJGPP__
+ /* Pretend that we are the user U whose group is G. This makes
+ pwd and grp functions ``know'' about the UID and GID of these. */
+ if (u && !is_number (u))
+ setenv ("USER", u, 1);
+ if (g && !is_number (g))
+ setenv ("GROUP", g, 1);
+#endif
+
if (u != NULL)
{
pwd = getpwnam (u);
if (pwd == NULL)
{
- if (!isnumber (u))
+ if (!is_number (u))
error_msg = "invalid user";
else
{
grp = getgrnam (g);
if (grp == NULL)
{
- if (!isnumber (g))
+ if (!is_number (g))
error_msg = "invalid group";
else
*gid = atoi (g);
#ifdef TEST
-#define NULL_CHECK(s) ((s) == NULL ? "(null)" : (s))
+# define NULL_CHECK(s) ((s) == NULL ? "(null)" : (s))
int
main (int argc, char **argv)