064b77c742
Run 'find src -executable -type f', remove unnecessary executable bits from the source tree. Type: refactor Signed-off-by: Ray Kinsella <mdr@ashroe.eu> Change-Id: I070e22c8fb2ef8712bc3ea620727ee5ab3d9a9fb
105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
/*
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* Copyright (c) 2020 Doc.ai and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __included_wg_messages_h__
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#define __included_wg_messages_h__
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#include <stdint.h>
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#include <wireguard/wireguard_noise.h>
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#include <wireguard/wireguard_cookie.h>
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#define WG_TICK 0.01 /**< WG tick period (s) */
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#define WHZ (u32) (1/WG_TICK) /**< WG tick frequency */
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#define NOISE_KEY_LEN_BASE64 ((((NOISE_PUBLIC_KEY_LEN) + 2) / 3) * 4 + 1)
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#define noise_encrypted_len(plain_len) ((plain_len) + NOISE_AUTHTAG_LEN)
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enum limits
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{
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REKEY_TIMEOUT = 5,
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REKEY_TIMEOUT_JITTER = WHZ / 3,
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KEEPALIVE_TIMEOUT = 10,
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MAX_TIMER_HANDSHAKES = 90 / REKEY_TIMEOUT,
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MAX_PEERS = 1U << 20
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};
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#define foreach_wg_message_type \
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_(INVALID, "Invalid") \
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_(HANDSHAKE_INITIATION, "Handshake initiation") \
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_(HANDSHAKE_RESPONSE, "Handshake response") \
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_(HANDSHAKE_COOKIE, "Handshake cookie") \
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_(DATA, "Data") \
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typedef enum message_type
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{
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#define _(v,s) MESSAGE_##v,
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foreach_wg_message_type
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#undef _
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} message_type_t;
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typedef struct message_header
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{
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message_type_t type;
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} message_header_t;
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typedef struct message_handshake_initiation
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{
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message_header_t header;
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u32 sender_index;
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u8 unencrypted_ephemeral[NOISE_PUBLIC_KEY_LEN];
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u8 encrypted_static[noise_encrypted_len (NOISE_PUBLIC_KEY_LEN)];
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u8 encrypted_timestamp[noise_encrypted_len (NOISE_TIMESTAMP_LEN)];
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message_macs_t macs;
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} message_handshake_initiation_t;
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typedef struct message_handshake_response
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{
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message_header_t header;
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u32 sender_index;
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u32 receiver_index;
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u8 unencrypted_ephemeral[NOISE_PUBLIC_KEY_LEN];
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u8 encrypted_nothing[noise_encrypted_len (0)];
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message_macs_t macs;
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} message_handshake_response_t;
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typedef struct message_handshake_cookie
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{
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message_header_t header;
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u32 receiver_index;
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u8 nonce[COOKIE_NONCE_SIZE];
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u8 encrypted_cookie[noise_encrypted_len (COOKIE_MAC_SIZE)];
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} message_handshake_cookie_t;
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typedef struct message_data
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{
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message_header_t header;
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u32 receiver_index;
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u64 counter;
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u8 encrypted_data[];
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} message_data_t;
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#define message_data_len(plain_len) \
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(noise_encrypted_len(plain_len) + sizeof(message_data_t))
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#endif /* __included_wg_messages_h__ */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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