grub/commands/password.c
Vladimir 'phcoder' Serbinenko 607a3701db 2010-01-07 Vladimir Serbinenko <phcoder@gmail.com>
Merge crypto branch.

	* Makefile.in (pkglib_DATA):  Add crypto.lst.
	(crypto.lst): New target.
	* commands/hashsum.c: New file.
	* commands/password.c (check_password): Use grub_crypto_memcmp.
	* commands/password_pbkdf2.c: New file.
	* commands/xnu_uuid.c: Remove MD5. Use GRUB_MD_MD5.
	* conf/any-emu.rmk (grub_emu_SOURCES): Add lib/crypto.c,
	normal/crypto.c and lib/libgcrypt-grub/cipher/md5.c.
	(grub_emu_CFLAGS): Add -Wno-missing-field-initializers -Wno-error
	-I$(srcdir)/lib/libgcrypt_wrap.
	* conf/common.rmk (normal_mod_SOURCES): Add normal/crypto.c.
	(pkglib_MODULES): Add crypto.mod, hashsum.mod, pbkdf2.mod and
	password_pbkdf2.mod.
	(crypto_mod_SOURCES): New variable.
	(crypto_mod_CFLAGS): Likewise.
	(crypto_mod_LDFLAGS): Likewise.
	(hashsum_mod_SOURCES): New variable.
	(hashsum_mod_CFLAGS): Likewise.
	(hashsum_mod_LDFLAGS): Likewise.
	(pbkdf2_mod_SOURCES): New variable.
	(pbkdf2_mod_CFLAGS): Likewise.
	(pbkdf2_mod_LDFLAGS): Likewise.
	(password_pbkdf2_mod_SOURCES): New variable.
	(password_pbkdf2_mod_CFLAGS): Likewise.
	(password_pbkdf2_mod_LDFLAGS): Likewise.
	(bin_UTILITIES): Add grub-mkpasswd-pbkdf2.
	(grub_mkpasswd_pbkdf2_SOURCES): New variable.
	(grub_mkpasswd_pbkdf2_CFLAGS): Likewise.
	Include conf/gcry.rmk.
	* include/grub/auth.h: Rewritten.
	* include/grub/crypto.h: New file.
	* include/grub/disk.h (grub_disk_dev_id): Add GRUB_DISK_DEVICE_LUKS_ID.
	* include/grub/normal.h (read_crypto_list): New prototype.
	* lib/crypto.c: New file.
	* lib/libgcrypt_wrap/cipher_wrap.h: Likewise.
	* lib/pbkdf2.c: Likewise.
	* normal/auth.c (grub_auth_strcmp): Removed.
	(grub_iswordseparator): Likewise.
	(grub_auth_strword): Likewise.
	(is_authenticated): Use grub_strword.
	(grub_auth_check_authentication): Use grub_strcmp, grub_password_get
	and grub_strword. Pass entered password to authentication callback.
	* normal/crypto.c: New file.
	* normal/main.c: Call read_crypto_list.
	* util/grub-mkpasswd-pbkdf2.c: New file.
	* util/import_gcry.py: Generate crypto.lst. Add hash blocklen.
2010-01-07 01:13:01 +01:00

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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/normal.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);
}