forked from Green-Sky/tomato
596ea37298
e58eb27a8 fix(toxav): remove extra copy of video frame on encode Tested and works, but there might be alignment issues and other stuff. 206ea3530 refactor: Explicitly pass dependencies to constructors. 7cefa93cf fix(toxencryptsave): Wipe salt and passkey after usage. 7c3be2342 refactor: Add file/line to tox-bootstrapd logging. f84e8cdce refactor: Move loglogdata out of network.c. 390f7db06 refactor: Move random and memory OS-specifics to `os_*` files. REVERT: 640e6cace fix(toxav): remove extra copy of video frame on encode Tested and works, but there might be alignment issues and other stuff. git-subtree-dir: external/toxcore/c-toxcore git-subtree-split: e58eb27a84f9fa0cd996868e079f39e90a5c04b6
68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-3.0-or-later
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* Copyright © 2020-2025 The TokTok team.
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*/
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#ifndef C_TOXCORE_TOXCORE_ANNOUNCE_H
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#define C_TOXCORE_TOXCORE_ANNOUNCE_H
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#include <stdint.h>
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#include "DHT.h"
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#include "attributes.h"
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#include "crypto_core.h"
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#include "forwarding.h"
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#include "logger.h"
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#include "mem.h"
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#include "mono_time.h"
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#include "network.h"
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#define MAX_ANNOUNCEMENT_SIZE 512
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typedef void announce_on_retrieve_cb(void *_Nullable object, const uint8_t *_Nullable data, uint16_t length);
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uint8_t announce_response_of_request_type(uint8_t request_type);
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typedef struct Announcements Announcements;
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Announcements *_Nullable new_announcements(const Logger *_Nonnull log, const Memory *_Nonnull mem, const Random *_Nonnull rng, const Mono_Time *_Nonnull mono_time, Forwarding *_Nonnull forwarding,
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DHT *_Nonnull dht, Networking_Core *_Nonnull net);
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/**
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* @brief If data is stored, run `on_retrieve_callback` on it.
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*
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* @return true if data is stored, false otherwise.
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*/
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bool announce_on_stored(const Announcements *_Nonnull announce, const uint8_t *_Nonnull data_public_key,
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announce_on_retrieve_cb *_Nullable on_retrieve_callback, void *_Nullable object);
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void announce_set_synch_offset(Announcements *_Nonnull announce, int32_t synch_offset);
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void kill_announcements(Announcements *_Nullable announce);
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/* The declarations below are not public, they are exposed only for tests. */
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/** @private
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* Return xor of first ANNOUNCE_BUCKET_PREFIX_LENGTH bits from one bit after
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* base and pk first differ
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*/
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uint16_t announce_get_bucketnum(const uint8_t *_Nonnull base, const uint8_t *_Nonnull pk);
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/** @private */
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bool announce_store_data(Announcements *_Nonnull announce, const uint8_t *_Nonnull data_public_key,
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const uint8_t *_Nullable data, uint32_t length, uint32_t timeout);
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/** @private */
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#define MAX_MAX_ANNOUNCEMENT_TIMEOUT 900
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#define MIN_MAX_ANNOUNCEMENT_TIMEOUT 10
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#define MAX_ANNOUNCEMENT_TIMEOUT_UPTIME_RATIO 4
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/** @private
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* For efficient lookup and updating, entries are stored as a hash table keyed
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* to the first ANNOUNCE_BUCKET_PREFIX_LENGTH bits starting from one bit after
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* the first bit in which data public key first differs from the dht key, with
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* (2-adically) closest keys preferentially stored within a given bucket. A
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* given key appears at most once (even if timed out).
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*/
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#define ANNOUNCE_BUCKET_SIZE 8
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#define ANNOUNCE_BUCKET_PREFIX_LENGTH 5
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#define ANNOUNCE_BUCKETS 32 // ANNOUNCE_BUCKETS = 2 ** ANNOUNCE_BUCKET_PREFIX_LENGTH
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#endif /* C_TOXCORE_TOXCORE_ANNOUNCE_H */
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