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/*
* OpenVPN -- An application to securely tunnel IP networks
* over a single TCP/UDP port, with support for SSL/TLS-based
* session authentication and key exchange,
* packet encryption, packet authentication, and
* packet compression.
*
* Copyright (C) 2022-2024 Antonio Quartulli <a@unstable.cc>
* Copyright (C) 2022-2024 OpenVPN Inc <sales@openvpn.net>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING included with this
* distribution); if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef DCO_INTERNAL_H
#define DCO_INTERNAL_H
#if defined(ENABLE_DCO)
#include "dco_freebsd.h"
#include "dco_linux.h"
#include "dco_win.h"
/**
* This file contains the internal DCO API definition.
* It is expected that this file is included only in dco.h.
* The OpenVPN code should never directly include this file
*/
static inline dco_cipher_t
dco_get_cipher(const char *cipher)
{
if (strcmp(cipher, "AES-256-GCM") == 0 || strcmp(cipher, "AES-128-GCM") == 0
|| strcmp(cipher, "AES-192-GCM") == 0)
{
return OVPN_CIPHER_ALG_AES_GCM;
}
else if (strcmp(cipher, "CHACHA20-POLY1305") == 0)
{
return OVPN_CIPHER_ALG_CHACHA20_POLY1305;
}
else
{
msg(M_FATAL, "DCO: provided unsupported cipher: %s", cipher);
}
}
/**
* The following are the DCO APIs used to control the driver.
* They are implemented by dco_linux.c
*/
int dco_new_peer(dco_context_t *dco, unsigned int peerid, int sd,
struct sockaddr *localaddr, struct sockaddr *remoteaddr,
struct in_addr *remote_in4, struct in6_addr *remote_in6);
int dco_del_peer(dco_context_t *dco, unsigned int peerid);
int dco_new_key(dco_context_t *dco, unsigned int peerid, int keyid,
dco_key_slot_t slot,
const uint8_t *encrypt_key, const uint8_t *encrypt_iv,
const uint8_t *decrypt_key, const uint8_t *decrypt_iv,
const char *ciphername);
int dco_del_key(dco_context_t *dco, unsigned int peerid, dco_key_slot_t slot);
int dco_swap_keys(dco_context_t *dco, unsigned int peerid);
#endif /* defined(ENABLE_DCO) */
#endif /* ifndef DCO_INTERNAL_H */
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