93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/auth.h>
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#include <grub/crypto.h>
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#include <grub/list.h>
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#include <grub/mm.h>
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#include <grub/misc.h>
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#include <grub/env.h>
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#include <grub/normal.h>
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#include <grub/dl.h>
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#include <grub/i18n.h>
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GRUB_MOD_LICENSE ("GPLv3+");
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static grub_dl_t my_mod;
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static grub_err_t
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check_password (const char *user, const char *entered,
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void *password)
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{
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if (grub_crypto_memcmp (entered, password, GRUB_AUTH_MAX_PASSLEN) != 0)
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return GRUB_ACCESS_DENIED;
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grub_auth_authenticate (user);
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return GRUB_ERR_NONE;
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}
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grub_err_t
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grub_normal_set_password (const char *user, const char *password)
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{
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grub_err_t err;
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char *pass;
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int copylen;
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pass = grub_zalloc (GRUB_AUTH_MAX_PASSLEN);
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if (!pass)
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return grub_errno;
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copylen = grub_strlen (password);
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if (copylen >= GRUB_AUTH_MAX_PASSLEN)
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copylen = GRUB_AUTH_MAX_PASSLEN - 1;
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grub_memcpy (pass, password, copylen);
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err = grub_auth_register_authentication (user, check_password, pass);
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if (err)
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{
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grub_free (pass);
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return err;
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}
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grub_dl_ref (my_mod);
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_cmd_password (grub_command_t cmd __attribute__ ((unused)),
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int argc, char **args)
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{
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if (argc != 2)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("two arguments expected"));
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return grub_normal_set_password (args[0], args[1]);
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}
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static grub_command_t cmd;
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GRUB_MOD_INIT(password)
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{
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my_mod = mod;
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cmd = grub_register_command ("password", grub_cmd_password,
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N_("USER PASSWORD"),
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N_("Set user password (plaintext). "
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"Unrecommended and insecure."));
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}
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GRUB_MOD_FINI(password)
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{
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grub_unregister_command (cmd);
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}
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