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/* Verify user/group passwords
Copyright (C) 1997 Free Software Foundation, Inc.
Written by Miles Bader <miles@gnu.ai.mit.edu>
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <stdlib.h>
#include <string.h>
#include <hurd.h>
#include <ctype.h>
#include <unistd.h>
#include <argp.h>
#include <pwd.h>
#include <grp.h>
#include "ugids.h"
/* Verify that we have the right to the ids in UGIDS, given that we already
possess those in HAVE_UIDS and HAVE_GIDS, asking for passwords (with
GETPASS, which defaults to the standard libc function getpass) where
necessary. 0 is returned if access should be allowed, otherwise
EINVAL if an incorrect password was entered, or an error relating to
resource failure. */
error_t
ugids_verify (const struct ugids *ugids,
const struct idvec *have_uids, const struct idvec *have_gids,
char *(*getpass_fn)(const char *prompt))
{
error_t err;
struct idvec check_uids = IDVEC_INIT; /* User-ids to verify. */
struct idvec check_gids = IDVEC_INIT; /* group-ids to verify. */
err = idvec_merge (&check_uids, &ugids->eff_uids);
if (! err)
err = idvec_merge (&check_uids, &ugids->avail_uids);
if (! err)
err = idvec_merge (&check_gids, &ugids->eff_gids);
if (! err)
err = idvec_merge (&check_gids, &ugids->avail_gids);
if (! err)
err = idvec_verify (&check_uids, &check_gids, have_uids, have_gids,
getpass_fn);
idvec_fini (&check_uids);
idvec_fini (&check_gids);
return err;
}
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