72 lines
3.0 KiB
C
72 lines
3.0 KiB
C
/*
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* Copyright (c) 2021 Daniel Hope (www.floorsense.nz)
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* Copyright (c) 2024 Simone Rossetto <simros85@gmail.com>
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* Copyright (c) 2025 Stephan Hadinger
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* 3. Neither the name of "Floorsense Ltd", "Agile Workspace Ltd" nor the names of
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* its contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Author: Daniel Hope <daniel.hope@smartalock.com>
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*/
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#ifndef _WIREGUARD_PLATFORM_H_
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#define _WIREGUARD_PLATFORM_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#define WIREGUARD_MAX_PEERS (1)
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#define WIREGUARD_MAX_SRC_IPS (4) // TASMOTA
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// Per device limit on accepting (valid) initiation requests - per peer
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#define MAX_INITIATIONS_PER_SECOND (2)
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// The number of milliseconds since system boot - for LwIP systems this could be sys_now()
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uint32_t wireguard_sys_now();
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// Fill the supplied buffer with random data - random data is used for generating new session keys periodically
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void wireguard_random_bytes(void *bytes, size_t size);
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// Get the current time in tai64n format - 8 byte seconds, 4 byte nano sub-second - see https://cr.yp.to/libtai/tai64.html for details
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// Output buffer passed is 12 bytes
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// The Wireguard implementation doesn't strictly need this to be a time, but instead an increasing value
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// The remote end of the Wireguard tunnel will use this value in handshake replay detection
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void wireguard_tai64n_now(uint8_t *output);
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// Is the system under load - i.e. should we generate cookie reply message in response to initiation messages
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bool wireguard_is_under_load();
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#ifdef __cplusplus
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}
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#endif
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#endif /* _WIREGUARD_PLATFORM_H_ */
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