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tox.c
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/* SPDX-License-Identifier: GPL-3.0-or-later
* Copyright © 2016-2018 The TokTok team.
* Copyright © 2013 Tox project.
*/
/*
* The Tox public API.
*/
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE 600
#endif
#include "tox.h"
#include "tox_private.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "Messenger.h"
#include "group.h"
#include "logger.h"
#include "mono_time.h"
#include "net_crypto.h"
#include "../toxencryptsave/defines.h"
#include <errno.h>
#if !defined(HAVE_LIBEV)
#if defined (WIN32) || defined(_WIN32) || defined(__WIN32__)
#include <winsock2.h>
#else
#include <sys/select.h>
#endif // WIN32 || _WIN32 || __WIN32__
#endif // !HAVE_LIBEV
#define SET_ERROR_PARAMETER(param, x) \
do { \
if (param) { \
*param = x; \
} \
} while (0)
static_assert(TOX_HASH_LENGTH == CRYPTO_SHA256_SIZE,
"TOX_HASH_LENGTH is assumed to be equal to CRYPTO_SHA256_SIZE");
static_assert(FILE_ID_LENGTH == CRYPTO_SYMMETRIC_KEY_SIZE,
"FILE_ID_LENGTH is assumed to be equal to CRYPTO_SYMMETRIC_KEY_SIZE");
static_assert(TOX_FILE_ID_LENGTH == CRYPTO_SYMMETRIC_KEY_SIZE,
"TOX_FILE_ID_LENGTH is assumed to be equal to CRYPTO_SYMMETRIC_KEY_SIZE");
static_assert(TOX_FILE_ID_LENGTH == TOX_HASH_LENGTH,
"TOX_FILE_ID_LENGTH is assumed to be equal to TOX_HASH_LENGTH");
static_assert(TOX_PUBLIC_KEY_SIZE == CRYPTO_PUBLIC_KEY_SIZE,
"TOX_PUBLIC_KEY_SIZE is assumed to be equal to CRYPTO_PUBLIC_KEY_SIZE");
static_assert(TOX_SECRET_KEY_SIZE == CRYPTO_SECRET_KEY_SIZE,
"TOX_SECRET_KEY_SIZE is assumed to be equal to CRYPTO_SECRET_KEY_SIZE");
static_assert(TOX_MAX_NAME_LENGTH == MAX_NAME_LENGTH,
"TOX_MAX_NAME_LENGTH is assumed to be equal to MAX_NAME_LENGTH");
static_assert(TOX_MAX_STATUS_MESSAGE_LENGTH == MAX_STATUSMESSAGE_LENGTH,
"TOX_MAX_STATUS_MESSAGE_LENGTH is assumed to be equal to MAX_STATUSMESSAGE_LENGTH");
struct Tox {
// XXX: Messenger *must* be the first member, because toxav casts its
// `Tox *` to `Messenger **`.
Messenger *m;
Mono_Time *mono_time;
pthread_mutex_t *mutex;
tox_self_connection_status_cb *self_connection_status_callback;
tox_friend_name_cb *friend_name_callback;
tox_friend_status_message_cb *friend_status_message_callback;
tox_friend_status_cb *friend_status_callback;
tox_friend_connection_status_cb *friend_connection_status_callback;
tox_friend_typing_cb *friend_typing_callback;
tox_friend_read_receipt_cb *friend_read_receipt_callback;
tox_friend_request_cb *friend_request_callback;
tox_friend_message_cb *friend_message_callback;
tox_file_recv_control_cb *file_recv_control_callback;
tox_file_chunk_request_cb *file_chunk_request_callback;
tox_file_recv_cb *file_recv_callback;
tox_file_recv_chunk_cb *file_recv_chunk_callback;
tox_conference_invite_cb *conference_invite_callback;
tox_conference_connected_cb *conference_connected_callback;
tox_conference_message_cb *conference_message_callback;
tox_conference_title_cb *conference_title_callback;
tox_conference_peer_name_cb *conference_peer_name_callback;
tox_conference_peer_list_changed_cb *conference_peer_list_changed_callback;
tox_friend_lossy_packet_cb *friend_lossy_packet_callback_per_pktid[UINT8_MAX + 1];
tox_friend_lossless_packet_cb *friend_lossless_packet_callback_per_pktid[UINT8_MAX + 1];
tox_loop_begin_cb *loop_begin_callback;
tox_loop_end_cb *loop_end_callback;
void *toxav_object; // workaround to store a ToxAV object (setter and getter functions are available)
};
static void lock(const Tox *tox)
{
if (tox->mutex != nullptr) {
pthread_mutex_lock(tox->mutex);
}
}
static void unlock(const Tox *tox)
{
if (tox->mutex != nullptr) {
pthread_mutex_unlock(tox->mutex);
}
}
struct Tox_Userdata {
Tox *tox;
void *user_data;
};
static void tox_self_connection_status_handler(Messenger *m, unsigned int connection_status, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->self_connection_status_callback != nullptr) {
tox_data->tox->self_connection_status_callback(tox_data->tox, (Tox_Connection)connection_status, tox_data->user_data);
}
}
static void tox_friend_name_handler(Messenger *m, uint32_t friend_number, const uint8_t *name, size_t length,
void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->friend_name_callback != nullptr) {
tox_data->tox->friend_name_callback(tox_data->tox, friend_number, name, length, tox_data->user_data);
}
}
static void tox_friend_status_message_handler(Messenger *m, uint32_t friend_number, const uint8_t *message,
size_t length, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->friend_status_message_callback != nullptr) {
tox_data->tox->friend_status_message_callback(tox_data->tox, friend_number, message, length, tox_data->user_data);
}
}
static void tox_friend_status_handler(Messenger *m, uint32_t friend_number, unsigned int status, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->friend_status_callback != nullptr) {
tox_data->tox->friend_status_callback(tox_data->tox, friend_number, (Tox_User_Status)status, tox_data->user_data);
}
}
static void tox_friend_connection_status_handler(Messenger *m, uint32_t friend_number, unsigned int connection_status,
void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->friend_connection_status_callback != nullptr) {
tox_data->tox->friend_connection_status_callback(tox_data->tox, friend_number, (Tox_Connection)connection_status,
tox_data->user_data);
}
}
static void tox_friend_typing_handler(Messenger *m, uint32_t friend_number, bool is_typing, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->friend_typing_callback != nullptr) {
tox_data->tox->friend_typing_callback(tox_data->tox, friend_number, is_typing, tox_data->user_data);
}
}
static void tox_friend_read_receipt_handler(Messenger *m, uint32_t friend_number, uint32_t message_id, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->friend_read_receipt_callback != nullptr) {
tox_data->tox->friend_read_receipt_callback(tox_data->tox, friend_number, message_id, tox_data->user_data);
}
}
static void tox_friend_request_handler(Messenger *m, const uint8_t *public_key, const uint8_t *message, size_t length,
void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->friend_request_callback != nullptr) {
tox_data->tox->friend_request_callback(tox_data->tox, public_key, message, length, tox_data->user_data);
}
}
static void tox_friend_message_handler(Messenger *m, uint32_t friend_number, unsigned int type, const uint8_t *message,
size_t length, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->friend_message_callback != nullptr) {
tox_data->tox->friend_message_callback(tox_data->tox, friend_number, (Tox_Message_Type)type, message, length,
tox_data->user_data);
}
}
static void tox_file_recv_control_handler(Messenger *m, uint32_t friend_number, uint32_t file_number,
unsigned int control, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->file_recv_control_callback != nullptr) {
tox_data->tox->file_recv_control_callback(tox_data->tox, friend_number, file_number, (Tox_File_Control)control,
tox_data->user_data);
}
}
static void tox_file_chunk_request_handler(Messenger *m, uint32_t friend_number, uint32_t file_number,
uint64_t position, size_t length, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->file_chunk_request_callback != nullptr) {
tox_data->tox->file_chunk_request_callback(tox_data->tox, friend_number, file_number, position, length,
tox_data->user_data);
}
}
static void tox_file_recv_handler(Messenger *m, uint32_t friend_number, uint32_t file_number, uint32_t kind,
uint64_t file_size, const uint8_t *filename, size_t filename_length, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->file_recv_callback != nullptr) {
tox_data->tox->file_recv_callback(tox_data->tox, friend_number, file_number, kind, file_size, filename, filename_length,
tox_data->user_data);
}
}
static void tox_file_recv_chunk_handler(Messenger *m, uint32_t friend_number, uint32_t file_number, uint64_t position,
const uint8_t *data, size_t length, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->file_recv_chunk_callback != nullptr) {
tox_data->tox->file_recv_chunk_callback(tox_data->tox, friend_number, file_number, position, data, length,
tox_data->user_data);
}
}
static void tox_conference_invite_handler(Messenger *m, uint32_t friend_number, int type, const uint8_t *cookie,
size_t length, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->conference_invite_callback != nullptr) {
tox_data->tox->conference_invite_callback(tox_data->tox, friend_number, (Tox_Conference_Type)type, cookie, length,
tox_data->user_data);
}
}
static void tox_conference_connected_handler(Messenger *m, uint32_t conference_number, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->conference_connected_callback != nullptr) {
tox_data->tox->conference_connected_callback(tox_data->tox, conference_number, tox_data->user_data);
}
}
static void tox_conference_message_handler(Messenger *m, uint32_t conference_number, uint32_t peer_number, int type,
const uint8_t *message, size_t length, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->conference_message_callback != nullptr) {
tox_data->tox->conference_message_callback(tox_data->tox, conference_number, peer_number, (Tox_Message_Type)type,
message, length, tox_data->user_data);
}
}
static void tox_conference_title_handler(Messenger *m, uint32_t conference_number, uint32_t peer_number,
const uint8_t *title, size_t length, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->conference_title_callback != nullptr) {
tox_data->tox->conference_title_callback(tox_data->tox, conference_number, peer_number, title, length,
tox_data->user_data);
}
}
static void tox_conference_peer_name_handler(Messenger *m, uint32_t conference_number, uint32_t peer_number,
const uint8_t *name, size_t length, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->conference_peer_name_callback != nullptr) {
tox_data->tox->conference_peer_name_callback(tox_data->tox, conference_number, peer_number, name, length,
tox_data->user_data);
}
}
static void tox_conference_peer_list_changed_handler(Messenger *m, uint32_t conference_number, void *user_data)
{
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->conference_peer_list_changed_callback != nullptr) {
tox_data->tox->conference_peer_list_changed_callback(tox_data->tox, conference_number, tox_data->user_data);
}
}
static void tox_friend_lossy_packet_handler(Messenger *m, uint32_t friend_number, uint8_t packet_id,
const uint8_t *data, size_t length, void *user_data)
{
assert(data != nullptr);
assert(length > 0);
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->friend_lossy_packet_callback_per_pktid[packet_id] != nullptr) {
tox_data->tox->friend_lossy_packet_callback_per_pktid[packet_id](tox_data->tox, friend_number, data, length,
tox_data->user_data);
}
}
static void tox_friend_lossless_packet_handler(Messenger *m, uint32_t friend_number, uint8_t packet_id,
const uint8_t *data, size_t length, void *user_data)
{
assert(data != nullptr);
assert(length > 0);
struct Tox_Userdata *tox_data = (struct Tox_Userdata *)user_data;
if (tox_data->tox->friend_lossless_packet_callback_per_pktid[packet_id] != nullptr) {
tox_data->tox->friend_lossless_packet_callback_per_pktid[packet_id](tox_data->tox, friend_number, data, length,
tox_data->user_data);
}
}
bool tox_version_is_compatible(uint32_t major, uint32_t minor, uint32_t patch)
{
return TOX_VERSION_IS_API_COMPATIBLE(major, minor, patch);
}
static State_Load_Status state_load_callback(void *outer, const uint8_t *data, uint32_t length, uint16_t type)
{
const Tox *tox = (const Tox *)outer;
State_Load_Status status = STATE_LOAD_STATUS_CONTINUE;
if (messenger_load_state_section(tox->m, data, length, type, &status)
|| conferences_load_state_section(tox->m->conferences_object, data, length, type, &status)) {
return status;
}
if (type == STATE_TYPE_END) {
if (length != 0) {
return STATE_LOAD_STATUS_ERROR;
}
return STATE_LOAD_STATUS_END;
}
LOGGER_ERROR(tox->m->log, "Load state: contains unrecognized part (len %u, type %u)",
length, type);
return STATE_LOAD_STATUS_CONTINUE;
}
/* Load tox from data of size length. */
static int tox_load(Tox *tox, const uint8_t *data, uint32_t length)
{
uint32_t data32[2];
const uint32_t cookie_len = sizeof(data32);
if (length < cookie_len) {
return -1;
}
memcpy(data32, data, sizeof(uint32_t));
lendian_bytes_to_host32(data32 + 1, data + sizeof(uint32_t));
if (data32[0] != 0 || data32[1] != STATE_COOKIE_GLOBAL) {
return -1;
}
return state_load(tox->m->log, state_load_callback, tox, data + cookie_len,
length - cookie_len, STATE_COOKIE_TYPE);
}
Tox *tox_new(const struct Tox_Options *options, Tox_Err_New *error)
{
Tox *tox = (Tox *)calloc(1, sizeof(Tox));
if (tox == nullptr) {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_MALLOC);
return nullptr;
}
Messenger_Options m_options = {0};
bool load_savedata_sk = false;
bool load_savedata_tox = false;
struct Tox_Options *default_options = nullptr;
if (options == nullptr) {
Tox_Err_Options_New err;
default_options = tox_options_new(&err);
switch (err) {
case TOX_ERR_OPTIONS_NEW_OK: {
break;
}
case TOX_ERR_OPTIONS_NEW_MALLOC: {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_MALLOC);
free(tox);
return nullptr;
}
}
}
const struct Tox_Options *const opts = options != nullptr ? options : default_options;
assert(opts != nullptr);
if (tox_options_get_savedata_type(opts) != TOX_SAVEDATA_TYPE_NONE) {
if (tox_options_get_savedata_data(opts) == nullptr || tox_options_get_savedata_length(opts) == 0) {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_LOAD_BAD_FORMAT);
tox_options_free(default_options);
free(tox);
return nullptr;
}
}
if (tox_options_get_savedata_type(opts) == TOX_SAVEDATA_TYPE_SECRET_KEY) {
if (tox_options_get_savedata_length(opts) != TOX_SECRET_KEY_SIZE) {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_LOAD_BAD_FORMAT);
tox_options_free(default_options);
free(tox);
return nullptr;
}
load_savedata_sk = true;
} else if (tox_options_get_savedata_type(opts) == TOX_SAVEDATA_TYPE_TOX_SAVE) {
if (tox_options_get_savedata_length(opts) < TOX_ENC_SAVE_MAGIC_LENGTH) {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_LOAD_BAD_FORMAT);
tox_options_free(default_options);
free(tox);
return nullptr;
}
if (memcmp(tox_options_get_savedata_data(opts), TOX_ENC_SAVE_MAGIC_NUMBER, TOX_ENC_SAVE_MAGIC_LENGTH) == 0) {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_LOAD_ENCRYPTED);
tox_options_free(default_options);
free(tox);
return nullptr;
}
load_savedata_tox = true;
}
m_options.ipv6enabled = tox_options_get_ipv6_enabled(opts);
m_options.udp_disabled = !tox_options_get_udp_enabled(opts);
m_options.port_range[0] = tox_options_get_start_port(opts);
m_options.port_range[1] = tox_options_get_end_port(opts);
m_options.tcp_server_port = tox_options_get_tcp_port(opts);
m_options.hole_punching_enabled = tox_options_get_hole_punching_enabled(opts);
m_options.local_discovery_enabled = tox_options_get_local_discovery_enabled(opts);
m_options.log_callback = (logger_cb *)tox_options_get_log_callback(opts);
m_options.log_context = tox;
m_options.log_user_data = tox_options_get_log_user_data(opts);
switch (tox_options_get_proxy_type(opts)) {
case TOX_PROXY_TYPE_HTTP: {
m_options.proxy_info.proxy_type = TCP_PROXY_HTTP;
break;
}
case TOX_PROXY_TYPE_SOCKS5: {
m_options.proxy_info.proxy_type = TCP_PROXY_SOCKS5;
break;
}
case TOX_PROXY_TYPE_NONE: {
m_options.proxy_info.proxy_type = TCP_PROXY_NONE;
break;
}
default: {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_PROXY_BAD_TYPE);
tox_options_free(default_options);
free(tox);
return nullptr;
}
}
if (m_options.proxy_info.proxy_type != TCP_PROXY_NONE) {
if (tox_options_get_proxy_port(opts) == 0) {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_PROXY_BAD_PORT);
tox_options_free(default_options);
free(tox);
return nullptr;
}
ip_init(&m_options.proxy_info.ip_port.ip, m_options.ipv6enabled);
if (m_options.ipv6enabled) {
m_options.proxy_info.ip_port.ip.family = net_family_unspec;
}
if (addr_resolve_or_parse_ip(tox_options_get_proxy_host(opts), &m_options.proxy_info.ip_port.ip, nullptr) == 0) {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_PROXY_BAD_HOST);
// TODO(irungentoo): TOX_ERR_NEW_PROXY_NOT_FOUND if domain.
tox_options_free(default_options);
free(tox);
return nullptr;
}
m_options.proxy_info.ip_port.port = net_htons(tox_options_get_proxy_port(opts));
}
tox->mono_time = mono_time_new();
if (tox->mono_time == nullptr) {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_MALLOC);
tox_options_free(default_options);
free(tox);
return nullptr;
}
if (tox_options_get_experimental_thread_safety(opts)) {
tox->mutex = (pthread_mutex_t *)malloc(sizeof(pthread_mutex_t));
if (tox->mutex == nullptr) {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_MALLOC);
tox_options_free(default_options);
free(tox);
return nullptr;
}
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
pthread_mutex_init(tox->mutex, &attr);
} else {
tox->mutex = nullptr;
}
lock(tox);
unsigned int m_error;
tox->m = new_messenger(tox->mono_time, &m_options, &m_error);
// TODO(iphydf): Clarify this code, check for NULL before new_groupchats, so
// new_groupchats can assume m is non-NULL.
if (!new_groupchats(tox->mono_time, tox->m)) {
kill_messenger(tox->m);
if (m_error == MESSENGER_ERROR_PORT) {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_PORT_ALLOC);
} else if (m_error == MESSENGER_ERROR_TCP_SERVER) {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_PORT_ALLOC);
} else {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_MALLOC);
}
mono_time_free(tox->mono_time);
tox_options_free(default_options);
unlock(tox);
if (tox->mutex != nullptr) {
pthread_mutex_destroy(tox->mutex);
}
free(tox->mutex);
free(tox);
return nullptr;
}
if (load_savedata_tox
&& tox_load(tox, tox_options_get_savedata_data(opts), tox_options_get_savedata_length(opts)) == -1) {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_LOAD_BAD_FORMAT);
} else if (load_savedata_sk) {
load_secret_key(tox->m->net_crypto, tox_options_get_savedata_data(opts));
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_OK);
} else {
SET_ERROR_PARAMETER(error, TOX_ERR_NEW_OK);
}
m_callback_namechange(tox->m, tox_friend_name_handler);
m_callback_core_connection(tox->m, tox_self_connection_status_handler);
m_callback_statusmessage(tox->m, tox_friend_status_message_handler);
m_callback_userstatus(tox->m, tox_friend_status_handler);
m_callback_connectionstatus(tox->m, tox_friend_connection_status_handler);
m_callback_typingchange(tox->m, tox_friend_typing_handler);
m_callback_read_receipt(tox->m, tox_friend_read_receipt_handler);
m_callback_friendrequest(tox->m, tox_friend_request_handler);
m_callback_friendmessage(tox->m, tox_friend_message_handler);
callback_file_control(tox->m, tox_file_recv_control_handler);
callback_file_reqchunk(tox->m, tox_file_chunk_request_handler);
callback_file_sendrequest(tox->m, tox_file_recv_handler);
callback_file_data(tox->m, tox_file_recv_chunk_handler);
g_callback_group_invite(tox->m->conferences_object, tox_conference_invite_handler);
g_callback_group_connected(tox->m->conferences_object, tox_conference_connected_handler);
g_callback_group_message(tox->m->conferences_object, tox_conference_message_handler);
g_callback_group_title(tox->m->conferences_object, tox_conference_title_handler);
g_callback_peer_name(tox->m->conferences_object, tox_conference_peer_name_handler);
g_callback_peer_list_changed(tox->m->conferences_object, tox_conference_peer_list_changed_handler);
custom_lossy_packet_registerhandler(tox->m, tox_friend_lossy_packet_handler);
custom_lossless_packet_registerhandler(tox->m, tox_friend_lossless_packet_handler);
tox_options_free(default_options);
unlock(tox);
return tox;
}
void tox_kill(Tox *tox)
{
if (tox == nullptr) {
return;
}
lock(tox);
LOGGER_ASSERT(tox->m->log, tox->m->msi_packet == nullptr, "Attempted to kill tox while toxav is still alive");
tox_loop_stop(tox);
kill_groupchats(tox->m->conferences_object);
kill_messenger(tox->m);
mono_time_free(tox->mono_time);
unlock(tox);
if (tox->mutex != nullptr) {
pthread_mutex_destroy(tox->mutex);
free(tox->mutex);
}
free(tox);
}
static uint32_t end_size(void)
{
return 2 * sizeof(uint32_t);
}
static void end_save(uint8_t *data)
{
state_write_section_header(data, STATE_COOKIE_TYPE, 0, STATE_TYPE_END);
}
size_t tox_get_savedata_size(const Tox *tox)
{
assert(tox != nullptr);
lock(tox);
size_t ret = 2 * sizeof(uint32_t)
+ messenger_size(tox->m)
+ conferences_size(tox->m->conferences_object)
+ end_size();
unlock(tox);
return ret;
}
void tox_get_savedata(const Tox *tox, uint8_t *savedata)
{
assert(tox != nullptr);
if (savedata == nullptr) {
return;
}
memset(savedata, 0, tox_get_savedata_size(tox));
lock(tox);
const uint32_t size32 = sizeof(uint32_t);
// write cookie
memset(savedata, 0, size32);
savedata += size32;
host_to_lendian_bytes32(savedata, STATE_COOKIE_GLOBAL);
savedata += size32;
savedata = messenger_save(tox->m, savedata);
savedata = conferences_save(tox->m->conferences_object, savedata);
end_save(savedata);
unlock(tox);
}
bool tox_bootstrap(Tox *tox, const char *host, uint16_t port, const uint8_t *public_key, Tox_Err_Bootstrap *error)
{
assert(tox != nullptr);
if (!host || !public_key) {
SET_ERROR_PARAMETER(error, TOX_ERR_BOOTSTRAP_NULL);
return 0;
}
if (port == 0) {
SET_ERROR_PARAMETER(error, TOX_ERR_BOOTSTRAP_BAD_PORT);
return 0;
}
IP_Port *root;
const int32_t count = net_getipport(host, &root, TOX_SOCK_DGRAM);
if (count == -1) {
net_freeipport(root);
SET_ERROR_PARAMETER(error, TOX_ERR_BOOTSTRAP_BAD_HOST);
return 0;
}
lock(tox);
for (int32_t i = 0; i < count; ++i) {
root[i].port = net_htons(port);
onion_add_bs_path_node(tox->m->onion_c, root[i], public_key);
if (!tox->m->options.udp_disabled) {
dht_bootstrap(tox->m->dht, root[i], public_key);
}
}
unlock(tox);
net_freeipport(root);
if (count) {
SET_ERROR_PARAMETER(error, TOX_ERR_BOOTSTRAP_OK);
return 1;
}
SET_ERROR_PARAMETER(error, TOX_ERR_BOOTSTRAP_BAD_HOST);
return 0;
}
bool tox_add_tcp_relay(Tox *tox, const char *host, uint16_t port, const uint8_t *public_key,
Tox_Err_Bootstrap *error)
{
assert(tox != nullptr);
if (!host || !public_key) {
SET_ERROR_PARAMETER(error, TOX_ERR_BOOTSTRAP_NULL);
return 0;
}
if (port == 0) {
SET_ERROR_PARAMETER(error, TOX_ERR_BOOTSTRAP_BAD_PORT);
return 0;
}
IP_Port *root;
const int32_t count = net_getipport(host, &root, TOX_SOCK_STREAM);
if (count == -1) {
net_freeipport(root);
SET_ERROR_PARAMETER(error, TOX_ERR_BOOTSTRAP_BAD_HOST);
return 0;
}
lock(tox);
for (int32_t i = 0; i < count; ++i) {
root[i].port = net_htons(port);
add_tcp_relay(tox->m->net_crypto, root[i], public_key);
}
unlock(tox);
net_freeipport(root);
if (count) {
SET_ERROR_PARAMETER(error, TOX_ERR_BOOTSTRAP_OK);
return 1;
}
SET_ERROR_PARAMETER(error, TOX_ERR_BOOTSTRAP_BAD_HOST);
return 0;
}
Tox_Connection tox_self_get_connection_status(const Tox *tox)
{
assert(tox != nullptr);
lock(tox);
const unsigned int ret = onion_connection_status(tox->m->onion_c);
unlock(tox);
if (ret == 2) {
return TOX_CONNECTION_UDP;
}
if (ret == 1) {
return TOX_CONNECTION_TCP;
}
return TOX_CONNECTION_NONE;
}
void tox_callback_self_connection_status(Tox *tox, tox_self_connection_status_cb *callback)
{
assert(tox != nullptr);
tox->self_connection_status_callback = callback;
}
uint32_t tox_iteration_interval(const Tox *tox)
{
assert(tox != nullptr);
lock(tox);
uint32_t ret = messenger_run_interval(tox->m);
unlock(tox);
return ret;
}
void tox_iterate(Tox *tox, void *user_data)
{
assert(tox != nullptr);
lock(tox);
mono_time_update(tox->mono_time);
struct Tox_Userdata tox_data = { tox, user_data };
do_messenger(tox->m, &tox_data);
do_groupchats(tox->m->conferences_object, &tox_data);
unlock(tox);
}
void tox_callback_loop_begin(Tox *tox, tox_loop_begin_cb *callback)
{
assert(tox != nullptr);
tox->loop_begin_callback = callback;
}
void tox_callback_loop_end(Tox *tox, tox_loop_end_cb *callback)
{
assert(tox != nullptr);
tox->loop_end_callback = callback;
}
#ifdef HAVE_LIBEV
static void tox_stop_loop_async(struct ev_loop *dispatcher, ev_async *listener, int events)
{
if (dispatcher == nullptr || listener == nullptr) {
return;
}
Tox_Userdata *tmp = (Tox_Userdata *)listener->data;
Messenger *m = tmp->tox->m;
if (net_ev_is_active(m->net)) {
net_ev_stop(m->net);
}
uint32_t len = tcp_connections_length(nc_get_tcp_c(m->net_crypto));
for (uint32_t i = 0; i < len; ++i) {
const TCP_con *conn = tcp_connections_connection_at(nc_get_tcp_c(m->net_crypto), i);
if (tcp_con_ev_is_active(conn->connection)) {
tcp_con_ev_stop(conn->connection);
}
}
ev_async_stop(dispatcher, listener);
ev_break(dispatcher, EVBREAK_ALL);
}
static void tox_do_iterate(struct ev_loop *dispatcher, ev_io *sock_listener, int events)
{
if (dispatcher == nullptr || sock_listener == nullptr) {
return;
}
Tox_Userdata *tmp = (Tox_Userdata *)sock_listener->data;
Tox *tox = tmp->tox;
Messenger *m = tox->m;
if (tmp->tox->loop_begin_callback) {
tmp->tox->loop_begin_callback(tmp->tox, tmp->user_data);
}
tox_iterate(tmp->tox, tmp->user_data);
if (!net_ev_is_active(m->net)) {
net_ev_listen(m->net, dispatcher, tox_do_iterate, tmp);
}
uint32_t len = tcp_connections_length(nc_get_tcp_c(m->net_crypto));
for (uint32_t i = 0; i < len; ++i) {
const TCP_con *conn = tcp_connections_connection_at(nc_get_tcp_c(m->net_crypto), i);
if (!tcp_con_ev_is_active(conn->connection)) {
tcp_con_ev_listen(conn->connection, dispatcher, tox_do_iterate, tmp);
}
}
if (tox->loop_end_callback) {
tox->loop_end_callback(tox, tmp->user_data);
}
}
#else
/**
* Gathers a list of every network file descriptor,
* where an activity is expected on.
*
* @param sockets a pointer to an array (the pointed array can be NULL).
* @param sockets_num the number of current known sockets (will be updated by the funciton).
*
* @return false if errors occurred, true otherwise.
*/
static bool tox_fds(Messenger *m, Socket **sockets, uint32_t *sockets_num)
{
assert(m != nullptr);
if (sockets == nullptr || sockets_num == nullptr) {
return false;
}
Socket *tmp_sockets = *sockets;
uint32_t len = tcp_connections_length(nc_get_tcp_c(m->net_crypto));
uint32_t fdcount = 1 + len;
if (fdcount != *sockets_num || tmp_sockets == nullptr) {
tmp_sockets = (Socket *)realloc(*sockets, fdcount * sizeof(Socket));
if (tmp_sockets == nullptr) {
return false;
}
*sockets = tmp_sockets;
*sockets_num = fdcount;
}
tmp_sockets[0] = net_sock(m->net);
uint32_t i = 0;
while (i < fdcount - 1 && i < len) {
const TCP_con *conn = tcp_connections_connection_at(nc_get_tcp_c(m->net_crypto), i);
++i;
if (conn != nullptr) {
tmp_sockets[i] = tcp_con_sock(conn->connection);
} else {
tmp_sockets[i] = (Socket) {
0
};
}
}
return true;
}
#endif
bool tox_loop(Tox *tox, void *user_data, Tox_Err_Loop *error)
{
assert(tox != nullptr);
Messenger *m = tox->m;
#ifdef HAVE_LIBEV
bool ret = true;
Tox_Userdata *tmp = (Tox_Userdata *) calloc(1, sizeof(Tox_Userdata));
if (tmp == nullptr) {
SET_ERROR_PARAMETER(error, TOX_ERR_LOOP_MALLOC);
return false;
}
tmp->tox = tox;
tmp->user_data = user_data;
ev_async_init(&m->stop_loop, tox_stop_loop_async);
m->stop_loop.data = tmp;
ev_async_start(m->dispatcher, &m->stop_loop);
ev_io stub_listener;
ev_init(&stub_listener, tox_do_iterate);
stub_listener.data = tmp;
tox_do_iterate(m->dispatcher, &stub_listener, 0);
// TODO(Ansa89): travis states that "ev_run" returns "void",
// but "man 3 ev" states it returns "bool"
#if 0
ret = !ev_run(m->dispatcher, 0);
if (ret) {
SET_ERROR_PARAMETER(error, TOX_ERR_LOOP_OK);
} else {
SET_ERROR_PARAMETER(error, TOX_ERR_LOOP_BREAK);