Green Sky
b2ae9530a4
f1df709b87 feat: add ngc events 1b6c907235 refactor: Make event dispatch ordered by receive time. b7f9367f6f test: Upgrade cppcheck, fix some warnings. 766e62bc89 chore: Use `pkg_search_module` directly in cmake. 00ff078f91 cleanup: Use target_link_libraries directly in cmake. c58928cc89 chore: Add `IMPORTED_TARGET` to pkg-config packages. 895a6af122 cleanup: Remove NaCl support. 41dfb1c1c0 fix: unpack enum function names in event impl generator 447666d1a1 chore: Disable targets for cross-compilation. 572924e924 chore: Build a docker image with coverage info in it. 415cb78f5e cleanup: Some portability/warning fixes for Windows builds. 425216d9ec fix: Correct a use-after-free and fix some memory leaks. 4b1cfa3e08 refactor: Change all enum-like `#define` sequences into enums. d3c2704fa9 chore: Fix make_single_file to support core-only. 0ce46b644e refactor: Change the `TCP_PACKET_*` defines into an enum. 22cd38ad50 adopt event impl generation tool to #2392 f31ea1088a add the event impl generation tool 4e603bb613 refactor: Use `enum-from-int` rule from tokstyle. 19d8f180d6 chore: Update github actions `uses`. 6a895be0c7 test: Make esp32 build actually try to instantiate tox. 65d09c9bfb cleanup: Remove test net support. REVERT: e29e185c03 feat: add ngc events git-subtree-dir: external/toxcore/c-toxcore git-subtree-split: f1df709b8792da4c0e946d826b11df77d565064d
115 lines
3.4 KiB
C
115 lines
3.4 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 "crypto_core.h"
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#include "mem.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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} 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
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