/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/auth.h>
#include <grub/crypto.h>
#include <grub/list.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/env.h>
#include <grub/normal.h>
#include <grub/dl.h>
#include <grub/i18n.h>
GRUB_MOD_LICENSE ("GPLv3+");
static grub_dl_t my_mod;
static grub_err_t
check_password (const char *user, const char *entered,
void *password)
{
if (grub_crypto_memcmp (entered, password, GRUB_AUTH_MAX_PASSLEN) != 0)
return GRUB_ACCESS_DENIED;
grub_auth_authenticate (user);
return GRUB_ERR_NONE;
}
grub_err_t
grub_normal_set_password (const char *user, const char *password)
{
grub_err_t err;
char *pass;
int copylen;
pass = grub_zalloc (GRUB_AUTH_MAX_PASSLEN);
if (!pass)
return grub_errno;
copylen = grub_strlen (password);
if (copylen >= GRUB_AUTH_MAX_PASSLEN)
copylen = GRUB_AUTH_MAX_PASSLEN - 1;
grub_memcpy (pass, password, copylen);
err = grub_auth_register_authentication (user, check_password, pass);
if (err)
{
grub_free (pass);
return err;
}
grub_dl_ref (my_mod);
return GRUB_ERR_NONE;
}
static grub_err_t
grub_cmd_password (grub_command_t cmd __attribute__ ((unused)),
int argc, char **args)
{
if (argc != 2)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "two arguments expected");
return grub_normal_set_password (args[0], args[1]);
}
static grub_command_t cmd;
GRUB_MOD_INIT(password)
{
my_mod = mod;
cmd = grub_register_command ("password", grub_cmd_password,
N_("USER PASSWORD"),
N_("Set user password (plaintext). "
"Unrecommended and insecure."));
}
GRUB_MOD_FINI(password)
{
grub_unregister_command (cmd);
}