54c0a3c874
640e6cace fix(toxav): remove extra copy of video frame on encode Tested and works, but there might be alignment issues and other stuff. 6f7f51554 chore(toxav): use realtime deadline for vp8 encoder Technically all this does is choose a quality based on frame duration, which we always set to 1, and as such is always realtime. (In same timebase as pts, which we use as a frame counter...) 5047ae5a2 chore: make the source tarball exhibit the old behavior 14804a4b8 chore: Fix sonar-scan CI action. e2db7d946 cleanup: Exclude lan_discovery test from running on macos, instead of excluding it from the project. 3accade67 chore: Fix CI, disabling some tests that no longer run on CI. ef8d767e6 cleanup: Fix comment formatting errors. 34ec822da cleanup: Fix some clang-19 format warnings. 40b3f0b46 refactor: Use clang's nullability qualifiers instead of attributes. f81e30679 refactor: Use per-parameter nullability annotations. REVERT: 1701691d5 chore(toxav): use realtime deadline for vp8 encoder Technically all this does is choose a quality based on frame duration, which we always set to 1, and as such is always realtime. (In same timebase as pts, which we use as a frame counter...) REVERT: a87505867 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: 640e6cace81b4412c45977b94eb9c41e53c54035
147 lines
5.6 KiB
C
147 lines
5.6 KiB
C
/* SPDX-License-Identifier: GPL-3.0-or-later
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* Copyright © 2016-2025 The TokTok team.
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* Copyright © 2013 Tox project.
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*/
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/**
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* Implementation of the onion part of docs/Prevent_Tracking.txt
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*/
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#ifndef C_TOXCORE_TOXCORE_ONION_H
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#define C_TOXCORE_TOXCORE_ONION_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 "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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#include "shared_key_cache.h"
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typedef int onion_recv_1_cb(void *_Nullable object, const IP_Port *_Nonnull dest, const uint8_t *_Nonnull data, uint16_t length);
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typedef struct Onion {
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const Logger *_Nonnull log;
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const Mono_Time *_Nonnull mono_time;
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const Random *_Nonnull rng;
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const Memory *_Nonnull mem;
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DHT *_Nonnull dht;
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Networking_Core *_Nonnull net;
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uint8_t secret_symmetric_key[CRYPTO_SYMMETRIC_KEY_SIZE];
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uint64_t timestamp;
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Shared_Key_Cache *_Nonnull shared_keys_1;
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Shared_Key_Cache *_Nonnull shared_keys_2;
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Shared_Key_Cache *_Nonnull shared_keys_3;
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onion_recv_1_cb *_Nullable recv_1_function;
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void *_Nullable callback_object;
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} Onion;
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#define ONION_MAX_PACKET_SIZE 1400
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#define ONION_RETURN_1 (CRYPTO_NONCE_SIZE + SIZE_IPPORT + CRYPTO_MAC_SIZE)
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#define ONION_RETURN_2 (CRYPTO_NONCE_SIZE + SIZE_IPPORT + CRYPTO_MAC_SIZE + ONION_RETURN_1)
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#define ONION_RETURN_3 (CRYPTO_NONCE_SIZE + SIZE_IPPORT + CRYPTO_MAC_SIZE + ONION_RETURN_2)
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#define ONION_SEND_BASE (CRYPTO_PUBLIC_KEY_SIZE + SIZE_IPPORT + CRYPTO_MAC_SIZE)
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#define ONION_SEND_3 (CRYPTO_NONCE_SIZE + ONION_SEND_BASE + ONION_RETURN_2)
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#define ONION_SEND_2 (CRYPTO_NONCE_SIZE + ONION_SEND_BASE*2 + ONION_RETURN_1)
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#define ONION_SEND_1 (CRYPTO_NONCE_SIZE + ONION_SEND_BASE*3)
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#define ONION_MAX_DATA_SIZE (ONION_MAX_PACKET_SIZE - (ONION_SEND_1 + 1))
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#define ONION_RESPONSE_MAX_DATA_SIZE (ONION_MAX_PACKET_SIZE - (1 + ONION_RETURN_3))
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#define ONION_PATH_LENGTH 3
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typedef struct Onion_Path {
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uint8_t shared_key1[CRYPTO_SHARED_KEY_SIZE];
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uint8_t shared_key2[CRYPTO_SHARED_KEY_SIZE];
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uint8_t shared_key3[CRYPTO_SHARED_KEY_SIZE];
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uint8_t public_key1[CRYPTO_PUBLIC_KEY_SIZE];
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uint8_t public_key2[CRYPTO_PUBLIC_KEY_SIZE];
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uint8_t public_key3[CRYPTO_PUBLIC_KEY_SIZE];
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IP_Port ip_port1;
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uint8_t node_public_key1[CRYPTO_PUBLIC_KEY_SIZE];
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IP_Port ip_port2;
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uint8_t node_public_key2[CRYPTO_PUBLIC_KEY_SIZE];
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IP_Port ip_port3;
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uint8_t node_public_key3[CRYPTO_PUBLIC_KEY_SIZE];
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uint32_t path_num;
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} Onion_Path;
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/** @brief Create a new onion path.
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*
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* Create a new onion path out of nodes (nodes is a list of ONION_PATH_LENGTH nodes)
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*
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* new_path must be an empty memory location of at least Onion_Path size.
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*
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* return -1 on failure.
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* return 0 on success.
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*/
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int create_onion_path(const Random *_Nonnull rng, const DHT *_Nonnull dht, Onion_Path *_Nonnull new_path, const Node_format *_Nonnull nodes);
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/** @brief Dump nodes in onion path to nodes of length num_nodes.
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*
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* return -1 on failure.
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* return 0 on success.
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*/
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int onion_path_to_nodes(Node_format *_Nonnull nodes, unsigned int num_nodes, const Onion_Path *_Nonnull path);
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/** @brief Create a onion packet.
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*
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* Use Onion_Path path to create packet for data of length to dest.
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* Maximum length of data is ONION_MAX_DATA_SIZE.
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* packet should be at least ONION_MAX_PACKET_SIZE big.
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*
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* return -1 on failure.
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* return length of created packet on success.
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*/
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int create_onion_packet(const Memory *_Nonnull mem, const Random *_Nonnull rng, uint8_t *_Nonnull packet, uint16_t max_packet_length, const Onion_Path *_Nonnull path,
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const IP_Port *_Nonnull dest, const uint8_t *_Nonnull data, uint16_t length);
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/** @brief Create a onion packet to be sent over tcp.
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*
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* Use Onion_Path path to create packet for data of length to dest.
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* Maximum length of data is ONION_MAX_DATA_SIZE.
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* packet should be at least ONION_MAX_PACKET_SIZE big.
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*
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* return -1 on failure.
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* return length of created packet on success.
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*/
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int create_onion_packet_tcp(const Memory *_Nonnull mem, const Random *_Nonnull rng, uint8_t *_Nonnull packet, uint16_t max_packet_length, const Onion_Path *_Nonnull path,
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const IP_Port *_Nonnull dest, const uint8_t *_Nonnull data, uint16_t length);
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/** @brief Create and send a onion response sent initially to dest with.
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* Maximum length of data is ONION_RESPONSE_MAX_DATA_SIZE.
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*
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* return -1 on failure.
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* return 0 on success.
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*/
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int send_onion_response(const Logger *_Nonnull log, const Networking_Core *_Nonnull net, const IP_Port *_Nonnull dest, const uint8_t *_Nonnull data, uint16_t length,
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const uint8_t *_Nonnull ret);
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/** @brief Function to handle/send received decrypted versions of the packet created by create_onion_packet.
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*
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* return 0 on success.
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* return 1 on failure.
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*
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* Used to handle these packets that are received in a non traditional way (by TCP for example).
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*
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* Source family must be set to something else than TOX_AF_INET6 or TOX_AF_INET so that the callback gets called
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* when the response is received.
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*/
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int onion_send_1(const Onion *_Nonnull onion, const uint8_t *_Nonnull plain, uint16_t len, const IP_Port *_Nonnull source, const uint8_t *_Nonnull nonce);
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/** Set the callback to be called when the dest ip_port doesn't have TOX_AF_INET6 or TOX_AF_INET as the family. */
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void set_callback_handle_recv_1(Onion *_Nonnull onion, onion_recv_1_cb *_Nullable function, void *_Nullable object);
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Onion *_Nullable new_onion(const Logger *_Nonnull log, const Memory *_Nonnull mem, const Mono_Time *_Nonnull mono_time, const Random *_Nonnull rng, DHT *_Nonnull dht);
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void kill_onion(Onion *_Nullable onion);
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#endif /* C_TOXCORE_TOXCORE_ONION_H */
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