luksrku/global.h

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/*
luksrku - Tool to remotely unlock LUKS disks using TLS.
Copyright (C) 2016-2016 Johannes Bauer
This file is part of luksrku.
luksrku 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; this program is ONLY licensed under
version 3 of the License, later versions are explicitly excluded.
luksrku 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 luksrku; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Johannes Bauer <JohannesBauer@gmx.de>
*/
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#ifndef __GLOBAL_H__
#define __GLOBAL_H__
/* Magic is the prefix of announcement packages. It is the MD5SUM over the
* CLIENT_PSK_IDENTITY. This only changes when the protocol that is spoken
* changes. */
#define CLIENT_PSK_IDENTITY "luksrku v2"
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#define CLIENT_ANNOUNCE_MAGIC { 0x46, 0xf2, 0xf6, 0xc6, 0x63, 0x12, 0x2e, 0x00, 0xa0, 0x8a, 0xae, 0x42, 0x0c, 0x51, 0xf5, 0x65 }
/* Size in bytes of the PSK that is used for TLS */
#define PSK_SIZE_BYTES 32
/* How many volumes every host may contain */
#define MAX_VOLUMES_PER_HOST 8
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/* How long a passphrase is (this is raw binary, not text) */
#define PASSPHRASE_SIZE_BYTES 32
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/* How long a passphrase is in it's encoded form, storing it as a character array */
#define PASSPHRASE_TEXT_SIZE_BYTES ((((PASSPHRASE_SIZE_BYTES + 2) / 3) * 4) + 1)
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/* How long in characters a cryptsetup device name mapping may be */
#define MAX_DEVMAPPER_NAME_LENGTH 63
/* How long in characters a cryptsetup device name mapping may be */
#define MAX_DESCRIPTION_LENGTH 63
/* Number of characters a user-defined passphrase may be long */
#define MAX_PASSPHRASE_LENGTH 255
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/* In what interval the server should broadcast that it's waiting for unlocking */
#define WAITING_MESSAGE_BROADCAST_INTERVAL_MILLISECONDS 1000
#define BLACKLIST_ENTRY_COUNT 16
#define BLACKLIST_ENTRY_TIMEOUT_SECS 120
#define staticassert(cond) _Static_assert((cond), #cond)
#endif