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
122 lines
3.7 KiB
C
122 lines
3.7 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 © 2014 Tox project.
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*/
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#ifndef C_TOXCORE_TOXCORE_TCP_COMMON_H
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#define C_TOXCORE_TOXCORE_TCP_COMMON_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 "net_profile.h"
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#include "network.h"
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typedef struct TCP_Priority_List TCP_Priority_List;
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struct TCP_Priority_List {
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TCP_Priority_List *next;
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uint16_t size;
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uint16_t sent;
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uint8_t *data;
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};
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non_null(1) nullable(2)
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void wipe_priority_list(const Memory *mem, TCP_Priority_List *p);
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#define NUM_RESERVED_PORTS 16
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#define NUM_CLIENT_CONNECTIONS (256 - NUM_RESERVED_PORTS)
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typedef enum Tcp_Packet {
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TCP_PACKET_ROUTING_REQUEST = 0,
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TCP_PACKET_ROUTING_RESPONSE = 1,
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TCP_PACKET_CONNECTION_NOTIFICATION = 2,
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TCP_PACKET_DISCONNECT_NOTIFICATION = 3,
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TCP_PACKET_PING = 4,
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TCP_PACKET_PONG = 5,
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TCP_PACKET_OOB_SEND = 6,
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TCP_PACKET_OOB_RECV = 7,
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TCP_PACKET_ONION_REQUEST = 8,
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TCP_PACKET_ONION_RESPONSE = 9,
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TCP_PACKET_FORWARD_REQUEST = 10,
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TCP_PACKET_FORWARDING = 11,
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} Tcp_Packet;
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#define TCP_HANDSHAKE_PLAIN_SIZE (CRYPTO_PUBLIC_KEY_SIZE + CRYPTO_NONCE_SIZE)
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#define TCP_SERVER_HANDSHAKE_SIZE (CRYPTO_NONCE_SIZE + TCP_HANDSHAKE_PLAIN_SIZE + CRYPTO_MAC_SIZE)
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#define TCP_CLIENT_HANDSHAKE_SIZE (CRYPTO_PUBLIC_KEY_SIZE + TCP_SERVER_HANDSHAKE_SIZE)
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#define TCP_MAX_OOB_DATA_LENGTH 1024
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/** frequency to ping connected nodes and timeout in seconds */
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#define TCP_PING_FREQUENCY 30
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#define TCP_PING_TIMEOUT 10
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#define MAX_PACKET_SIZE 2048
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typedef struct TCP_Connection {
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const Memory *mem;
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const Random *rng;
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const Network *ns;
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Socket sock;
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IP_Port ip_port; // for debugging.
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uint8_t sent_nonce[CRYPTO_NONCE_SIZE]; /* Nonce of sent packets. */
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uint8_t shared_key[CRYPTO_SHARED_KEY_SIZE];
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uint8_t last_packet[2 + MAX_PACKET_SIZE];
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uint16_t last_packet_length;
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uint16_t last_packet_sent;
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TCP_Priority_List *priority_queue_start;
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TCP_Priority_List *priority_queue_end;
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// This is a shared pointer to the parent's respective Net_Profile object
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// (either TCP_Server for TCP server packets or TCP_Connections for TCP client packets).
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Net_Profile *net_profile;
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} TCP_Connection;
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/**
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* @retval 0 if pending data was sent completely
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* @retval -1 if it wasn't
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*/
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non_null()
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int send_pending_data_nonpriority(const Logger *logger, TCP_Connection *con);
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/**
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* @retval 0 if pending data was sent completely
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* @retval -1 if it wasn't
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*/
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non_null()
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int send_pending_data(const Logger *logger, TCP_Connection *con);
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/**
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* @retval 1 on success.
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* @retval 0 if could not send packet.
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* @retval -1 on failure (connection must be killed).
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*/
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non_null()
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int write_packet_tcp_secure_connection(
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const Logger *logger, TCP_Connection *con, const uint8_t *data, uint16_t length,
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bool priority);
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/** @brief Read length bytes from socket.
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*
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* return length on success
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* return -1 on failure/no data in buffer.
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*/
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non_null()
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int read_tcp_packet(
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const Logger *logger, const Memory *mem, const Network *ns, Socket sock, uint8_t *data, uint16_t length, const IP_Port *ip_port);
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/**
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* @return length of received packet on success.
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* @retval 0 if could not read any packet.
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* @retval -1 on failure (connection must be killed).
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*/
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non_null()
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int read_packet_tcp_secure_connection(
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const Logger *logger, const Memory *mem, const Network *ns,
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Socket sock, uint16_t *next_packet_length,
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const uint8_t *shared_key, uint8_t *recv_nonce, uint8_t *data,
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uint16_t max_len, const IP_Port *ip_port);
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#endif /* C_TOXCORE_TOXCORE_TCP_COMMON_H */
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