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- /*
- * 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/command.h>
- #include <grub/dl.h>
- #include <grub/i18n.h>
- 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;
- }
- static grub_err_t
- grub_cmd_password (grub_command_t cmd __attribute__ ((unused)),
- int argc, char **args)
- {
- grub_err_t err;
- char *pass;
- int copylen;
- if (argc != 2)
- return grub_error (GRUB_ERR_BAD_ARGUMENT, "two arguments expected");
- pass = grub_zalloc (GRUB_AUTH_MAX_PASSLEN);
- if (!pass)
- return grub_errno;
- copylen = grub_strlen (args[1]);
- if (copylen >= GRUB_AUTH_MAX_PASSLEN)
- copylen = GRUB_AUTH_MAX_PASSLEN - 1;
- grub_memcpy (pass, args[1], copylen);
- err = grub_auth_register_authentication (args[0], check_password, pass);
- if (err)
- {
- grub_free (pass);
- return err;
- }
- grub_dl_ref (my_mod);
- return GRUB_ERR_NONE;
- }
- 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);
- }
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