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/* Remove authentication from selected processes
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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <hurd.h>
#include <argp.h>
#include <error.h>
#include <version.h>
#include "frobauth.h"
const char *argp_program_version = STANDARD_HURD_VERSION (rmauth);
static const struct argp_option options[] =
{
#ifndef UNSU
{"save", 's', 0, 0, "Save removed effective ids as available ids"},
#endif
{ 0 }
};
#ifdef UNSU
static struct argp_child child_argps[] = {{ &frobauth_posix_argp }, { 0 }};
#else
static struct argp_child child_argps[] = {{ &frobauth_ea_argp }, { 0 }};
#endif
static char doc[] =
"Remove user/group ids from the authentication of selected processes";
void
main (int argc, char *argv[])
{
int save = 0; /* save effective ids */
struct frobauth frobauth = FROBAUTH_INIT;
error_t parse_opt (int key, char *arg, struct argp_state *state)
{
switch (key)
{
case 's': save = 1; break;
case ARGP_KEY_INIT:
state->child_inputs[0] = state->input; break;
default:
return ARGP_ERR_UNKNOWN;
}
return 0;
}
/* Modify UGIDS, to be what PID's new authentication should be, UGIDS is
what the user specified. */
error_t modify (struct ugids *ugids, const struct ugids *remove,
pid_t pid, void *hook)
{
error_t err = 0;
struct ugids saved = UGIDS_INIT;
if (save)
ugids_set (&saved, ugids);
err = ugids_subtract (ugids, remove);
if (save)
{
ugids_subtract (&saved, ugids);
ugids_save (&saved);
ugids_merge (ugids, &saved);
}
return err;
}
void print_info (const struct ugids *new,
const struct ugids *old,
const struct ugids *removed,
pid_t pid, void *hook)
{
char *delta_rep;
struct ugids delta = UGIDS_INIT;
ugids_set (&delta, old);
ugids_subtract (&delta, new);
delta_rep = ugids_rep (&delta, 1, 1, 0, 0, 0);
printf ("%d: Removed %s\n", pid, delta_rep);
free (delta_rep);
ugids_fini (&delta);
}
struct argp argp = { options, parse_opt, 0, doc, child_argps };
#ifdef UNSU
frobauth.default_user = 0;
#endif
frobauth.require_ids = 1;
/* Parse our command line. This shouldn't ever return an error. */
argp_parse (&argp, argc, argv, 0, 0, &frobauth);
if (frobauth_modify (&frobauth, 0, 0, modify, print_info, 0))
exit (0);
else
exit (1);
}
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