forked from Green-Sky/tomato
ff3512a77e
f785959eace chore: add to_string functions for netprof enums a95b7957288 cleanup: Heap allocate network profile objects a3c80149edd feat: Implement Tox network profiler ac812871a2e feat: implement the last 2 missing network struct functions and make use of them 29d1043be0b test: friend request test now tests min/max message sizes 93aafd78c1f fix: friend requests with very long messages are no longer dropped 819aa2b2618 feat: Add option to disable DNS lookups in toxcore. 0ac23cee035 fix: windows use of REUSEADDR 7d2811d302d chore(ci): make bazel server shutdown faster 1dc399ba20d chore: Use vcpkg instead of conan in the MSVC build. 14d823165d9 chore: Migrate to conan 2. bdd17c16787 cleanup: Allocate logger using tox memory allocator. b396c061515 chore(deps): bump third_party/cmp from `2ac6bca` to `52bfcfa` 2e94da60d09 feat(net): add missing connect to network struct 41fb1839c7b chore: Add check to ensure version numbers agree. 934a8301113 chore: Release 0.2.20 3acef4bf044 fix: Add missing free in dht_get_nodes_response event. git-subtree-dir: external/toxcore/c-toxcore git-subtree-split: f785959eacebc59590f756b133b52601c335a1d1
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 © 2016-2018 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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