8c7c0e5870
Now we're receiving the client broadcasts on the server side and checking if they match the magic number we're expecting.
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/*
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luksrku - Tool to remotely unlock LUKS disks using TLS.
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Copyright (C) 2016-2016 Johannes Bauer
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This file is part of luksrku.
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luksrku 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; this program is ONLY licensed under
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version 3 of the License, later versions are explicitly excluded.
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luksrku 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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You should have received a copy of the GNU General Public License
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along with luksrku; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Johannes Bauer <JohannesBauer@gmx.de>
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*/
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#ifndef __MSG_H__
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#define __MSG_H__
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#include <stdint.h>
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#include "global.h"
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/* Magic is the prefix of announcement packages. It is the MD5SUM over the
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* string "luksrku v2". This only changes when the protocol that is spoken
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* changes. */
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#define UDP_MESSAGE_MAGIC_SIZE 16
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#define UDP_MESSAGE_MAGIC (const uint8_t[UDP_MESSAGE_MAGIC_SIZE]){ 0x46, 0xf2, 0xf6, 0xc6, 0x63, 0x12, 0x2e, 0x00, 0xa0, 0x8a, 0xae, 0x42, 0x0c, 0x51, 0xf5, 0x65 }
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struct udp_query_t {
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uint8_t magic[UDP_MESSAGE_MAGIC_SIZE];
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uint8_t host_uuid[16];
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} __attribute__ ((packed));
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struct udp_response_t {
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uint8_t magic[UDP_MESSAGE_MAGIC_SIZE];
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} __attribute__ ((packed));
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struct msg_t {
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uint8_t volume_uuid[16];
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uint8_t luks_passphrase_raw[LUKS_PASSPHRASE_RAW_SIZE_BYTES];
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} __attribute__ ((packed));
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staticassert(sizeof(struct msg_t) == 16 + LUKS_PASSPHRASE_RAW_SIZE_BYTES);
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#endif
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