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/* message role, for libreswan
*
* Copyright (C) 1997 Angelos D. Keromytis.
* Copyright (C) 1998-2002,2013 D. Hugh Redelmeier <hugh@mimosa.com>
* Copyright (C) 2012-2019 Paul Wouters <pwouters@redhat.com>
* Copyright (C) 2012 Philippe Vouters <philippe.vouters@laposte.net>
* Copyright (C) 2013 David McCullough <ucdevel@gmail.com>
* Copyright (C) 2013 Matt Rogers <mrogers@redhat.com>
* Copyright (C) 2016-2019 Andrew Cagney <cagney@gnu.org>
* Copyright (C) 2017-2018 Sahana Prasad <sahana.prasad07@gmail.com>
* Copyright (C) 2017 Vukasin Karadzic <vukasin.karadzic@gmail.com>
* Copyright (C) 2019-2019 Andrew Cagney <cagney@gnu.org>
* Copyright (C) 2020 Yulia Kuzovkova <ukuzovkova@gmail.com>
*
* This program 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 2 of the License, or (at your
* option) any later version. See <https://www.gnu.org/licenses/gpl2.txt>.
*
* This program 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.
*
*/
#ifndef MESSAGE_ROLE_H
#define MESSAGE_ROLE_H
/*
* The IKEv2 message role. Is this message a request or a response
* (to a request) as determined by the IKEv2 "R (Response)" flag.
*
* Since either end can initiate a request either end can set the
* R(Response) flag.
*
* During a CHILD_SA exchange it is the request initiator (receives
* the MESSAGE_RESPONSE) and request responder (receives the
* MESSAGE_REQUEST), and not the original (IKE SA) initiator /
* responder that determine how crypto material is carved up.
*/
enum message_role {
#define MESSAGE_ROLE_FLOOR NO_MESSAGE
NO_MESSAGE = 0,
MESSAGE_REQUEST = 1, /* MSG_R missing */
MESSAGE_RESPONSE = 2, /* MSR_R present */
#define MESSAGE_ROLE_ROOF (MESSAGE_RESPONSE+1)
};
extern const struct enum_names message_role_names;
#endif
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