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/*
* OpenVPN -- An application to securely tunnel IP networks
* over a single UDP port, with support for SSL/TLS-based
* session authentication and key exchange,
* packet encryption, packet authentication, and
* packet compression.
* |
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* Copyright (C) 2002-2018 OpenVPN Inc <sales@openvpn.net> |
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*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* 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.
* |
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* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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*/
/*
* Each session is identified by a random 8-byte session identifier.
*
* For efficiency, the session id is only transmitted over the control
* channel (which only sees traffic occasionally when keys are being
* negotiated).
*/
#ifndef SESSION_ID_H
#define SESSION_ID_H
#include "basic.h"
#include "buffer.h"
struct session_id
{ |
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uint8_t id[8]; |
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};
extern const struct session_id x_session_id_zero;
|
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#define SID_SIZE (sizeof(x_session_id_zero.id)) |
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static inline bool |
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session_id_equal(const struct session_id *sid1,
const struct session_id *sid2) |
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{ |
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return !memcmp(sid1->id, sid2->id, SID_SIZE); |
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}
static inline bool |
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session_id_defined(const struct session_id *sid1) |
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{ |
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return memcmp(sid1->id, &x_session_id_zero.id, SID_SIZE) != 0; |
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}
static inline bool |
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session_id_read(struct session_id *sid, struct buffer *buf) |
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{ |
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return buf_read(buf, sid->id, SID_SIZE); |
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}
static inline bool |
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session_id_write_prepend(const struct session_id *sid, struct buffer *buf) |
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{ |
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return buf_write_prepend(buf, sid->id, SID_SIZE); |
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}
static inline bool |
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session_id_write(const struct session_id *sid, struct buffer *buf) |
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{ |
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return buf_write(buf, sid->id, SID_SIZE); |
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}
|
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void session_id_random(struct session_id *sid); |
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|
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const char *session_id_print(const struct session_id *sid, struct gc_arena *gc); |
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#endif /* SESSION_ID_H */ |