diff options
Diffstat (limited to 'lib/group-member.c')
-rw-r--r-- | lib/group-member.c | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/lib/group-member.c b/lib/group-member.c deleted file mode 100644 index 7b189f241..000000000 --- a/lib/group-member.c +++ /dev/null @@ -1,133 +0,0 @@ -/* group-member.c -- determine whether group id is in calling user's group list - Copyright (C) 1994, 1997, 1998, 2003, 2005 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 2, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include "group-member.h" - -#include <stdbool.h> -#include <stdio.h> -#include <sys/types.h> -#include <stdlib.h> - -#include <unistd.h> - -#include "xalloc.h" - -struct group_info - { - int n_groups; - GETGROUPS_T *group; - }; - -#if HAVE_GETGROUPS - -static void -free_group_info (struct group_info const *g) -{ - free (g->group); -} - -static bool -get_group_info (struct group_info *gi) -{ - int n_groups; - int n_group_slots = getgroups (0, NULL); - GETGROUPS_T *group; - - if (n_group_slots < 0) - return false; - - /* Avoid xnmalloc, as it goes awry when SIZE_MAX < n_group_slots. */ - if (xalloc_oversized (n_group_slots, sizeof *group)) - xalloc_die (); - group = xmalloc (n_group_slots * sizeof *group); - n_groups = getgroups (n_group_slots, group); - - /* In case of error, the user loses. */ - if (n_groups < 0) - { - free (group); - return false; - } - - gi->n_groups = n_groups; - gi->group = group; - - return true; -} - -#endif /* not HAVE_GETGROUPS */ - -/* Return non-zero if GID is one that we have in our groups list. - If there is no getgroups function, return non-zero if GID matches - either of the current or effective group IDs. */ - -int -group_member (gid_t gid) -{ -#ifndef HAVE_GETGROUPS - return ((gid == getgid ()) || (gid == getegid ())); -#else - int i; - int found; - struct group_info gi; - - if (! get_group_info (&gi)) - return 0; - - /* Search through the list looking for GID. */ - found = 0; - for (i = 0; i < gi.n_groups; i++) - { - if (gid == gi.group[i]) - { - found = 1; - break; - } - } - - free_group_info (&gi); - - return found; -#endif /* HAVE_GETGROUPS */ -} - -#ifdef TEST - -char *program_name; - -int -main (int argc, char **argv) -{ - int i; - - program_name = argv[0]; - - for (i=1; i<argc; i++) - { - gid_t gid; - - gid = atoi (argv[i]); - printf ("%d: %s\n", gid, group_member (gid) ? "yes" : "no"); - } - exit (0); -} - -#endif /* TEST */ |