3b6bb15e86
d9b8fa6098d fix: Fake broadcast address for 127.x.x.x aa649165a57 chore: Add code for future netprof TCP testing 9e5693de5ac chore: add to_string functions for netprof enums 52d915e6a90 cleanup: Heap allocate network profile objects 80fabd4a729 feat: Implement Tox network profiler 05abe083cb6 cleanup: Some random cleanups, mostly related to mem. 5cca24513b8 cleanup: Check that onion IP/Port packing worked. e092ecd1244 cleanup: Use tox memory allocator in some more places. 3cfe41c7587 fix: Avoid `memcpy`-ing structs into onion ping id data. e32ac001938 fix: Add more information on why the frame was not sent. ab887003687 fix: Allow TCP connections to fail `connect` calls. 7603170e663 refactor: Use tox memory in group connection allocations. 5bd8a85eb89 cleanup: Align internal logger with external on type of source line. e9bf524d9e1 cleanup: Add missing `#include` to sort_test.cc. d10c966b998 feat: Add `to_string` functions for toxencryptsave errors. 7bfd0dc8003 docs: Update the docs for group join functions 380dde9f2ae test: Add more logging to TCP connection constructor. 0f12f384c8c cleanup: Reduce stack frame sizes to below 4096 bytes. bc43cec0626 chore: Happy new year! fbe78f1702e cleanup: Add a `TOX_HIDE_DEPRECATED` check to hide deprecated symbols. 44d9da07e77 refactor: Use tox memory for group moderation/pack allocations. 7f26d520168 refactor: Use tox memory in group chats allocations. 2f62f3d0e77 refactor: Use tox Memory for group allocations. 8a968162041 chore: Add dispatch/events headers to bazel export. 2bbfb35abf6 docs: Output the error code string instead of int. in toxav logging d55d0e4eaef cleanup: Remove redundant code for checking if group exists 2a6dc643338 chore: Upgrade dependencies for websockify. fc0650601c1 fix: Allow peers to reconnect to group chats using a password git-subtree-dir: external/toxcore/c-toxcore git-subtree-split: d9b8fa6098de6c074038b6664d2572627540b148
130 lines
4.7 KiB
C
130 lines
4.7 KiB
C
/* SPDX-License-Identifier: GPL-3.0-or-later
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* Copyright © 2019-2025 The TokTok team.
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*/
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#ifndef C_TOXCORE_TOXCORE_FORWARDING_H
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#define C_TOXCORE_TOXCORE_FORWARDING_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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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SENDBACK_IPPORT 0
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#define SENDBACK_FORWARD 1
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#define SENDBACK_TCP 2
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#define MAX_SENDBACK_SIZE (0xff - 1)
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#define MAX_FORWARD_DATA_SIZE (MAX_UDP_PACKET_SIZE - (1 + 1 + MAX_SENDBACK_SIZE))
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#define MAX_FORWARD_CHAIN_LENGTH 4
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#define MAX_PACKED_IPPORT_SIZE (1 + SIZE_IP6 + sizeof(uint16_t))
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typedef struct Forwarding Forwarding;
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non_null()
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DHT *forwarding_get_dht(const Forwarding *forwarding);
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/**
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* @brief Send data to forwarder for forwarding via chain of dht nodes.
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* Destination is last key in the chain.
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*
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* @param data Must be of length at most MAX_FORWARD_DATA_SIZE.
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* @param chain_length Number of intermediate nodes in chain.
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* Must be at least 1 and at most MAX_FORWARD_CHAIN_LENGTH.
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* @param chain_keys Public keys of chain nodes. Must be of length
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* `chain_length * CRYPTO_PUBLIC_KEY_SIZE`.
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*
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* @return true on success, false otherwise.
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*/
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non_null()
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bool send_forward_request(const Networking_Core *net, const IP_Port *forwarder,
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const uint8_t *chain_keys, uint16_t chain_length,
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const uint8_t *data, uint16_t data_length);
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/** Returns size of packet written by create_forward_chain_packet. */
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uint16_t forward_chain_packet_size(uint16_t chain_length, uint16_t data_length);
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/**
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* @brief Create forward request packet for forwarding data via chain of dht nodes.
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* Destination is last key in the chain.
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*
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* @param data Must be of length at most MAX_FORWARD_DATA_SIZE.
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* @param chain_length Number of intermediate nodes in chain.
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* Must be at least 1 and at most MAX_FORWARD_CHAIN_LENGTH.
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* @param chain_keys Public keys of chain nodes. Must be of length
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* `chain_length * CRYPTO_PUBLIC_KEY_SIZE`.
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* @param packet Must be of size at least
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* `forward_chain_packet_size(chain_length, data_length)` bytes.
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*
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* @return true on success, false otherwise.
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*/
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non_null()
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bool create_forward_chain_packet(const uint8_t *chain_keys, uint16_t chain_length,
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const uint8_t *data, uint16_t data_length,
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uint8_t *packet);
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/**
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* @brief Send reply to forwarded packet via forwarder.
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* @param sendback Must be of size at most MAX_SENDBACK_SIZE.
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* @param data Must be of size at most MAX_FORWARD_DATA_SIZE.
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*
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* @return true on success, false otherwise.
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*/
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non_null()
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bool forward_reply(const Networking_Core *net, const IP_Port *forwarder,
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const uint8_t *sendback, uint16_t sendback_length,
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const uint8_t *data, uint16_t length);
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/**
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* @brief Set callback to handle a forwarded request.
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* To reply to the packet, callback should use `forward_reply()` to send a reply
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* forwarded via forwarder, passing the provided sendback.
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*/
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typedef void forwarded_request_cb(void *object, const IP_Port *forwarder, const uint8_t *sendback,
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uint16_t sendback_length, const uint8_t *data,
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uint16_t length, void *userdata);
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non_null(1) nullable(2, 3)
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void set_callback_forwarded_request(Forwarding *forwarding, forwarded_request_cb *function, void *object);
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/** @brief Set callback to handle a forwarded response. */
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typedef void forwarded_response_cb(void *object, const uint8_t *data, uint16_t length, void *userdata);
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non_null(1) nullable(2, 3)
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void set_callback_forwarded_response(Forwarding *forwarding, forwarded_response_cb *function, void *object);
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/** @brief Send forwarding packet to dest with given sendback data and data. */
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non_null(1, 2, 5) nullable(3)
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bool send_forwarding(const Forwarding *forwarding, const IP_Port *dest,
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const uint8_t *sendback_data, uint16_t sendback_data_len,
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const uint8_t *data, uint16_t length);
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typedef bool forward_reply_cb(void *object, const uint8_t *sendback_data, uint16_t sendback_data_len,
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const uint8_t *data, uint16_t length);
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/**
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* @brief Set callback to handle a forward reply with an otherwise unhandled
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* sendback.
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*/
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non_null(1) nullable(2, 3)
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void set_callback_forward_reply(Forwarding *forwarding, forward_reply_cb *function, void *object);
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non_null()
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Forwarding *new_forwarding(const Logger *log, const Memory *mem, const Random *rng, const Mono_Time *mono_time, DHT *dht);
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nullable(1)
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void kill_forwarding(Forwarding *forwarding);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* C_TOXCORE_TOXCORE_FORWARDING_H */
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