tomato/toxcore/events/friend_lossy_packet.c

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/* SPDX-License-Identifier: GPL-3.0-or-later
* Copyright © 2022 The TokTok team.
*/
#include "events_alloc.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "../bin_pack.h"
#include "../bin_unpack.h"
#include "../ccompat.h"
#include "../tox.h"
#include "../tox_events.h"
/*****************************************************
*
* :: struct and accessors
*
*****************************************************/
struct Tox_Event_Friend_Lossy_Packet {
uint32_t friend_number;
uint8_t *data;
uint32_t data_length;
};
non_null()
static void tox_event_friend_lossy_packet_construct(Tox_Event_Friend_Lossy_Packet *friend_lossy_packet)
{
*friend_lossy_packet = (Tox_Event_Friend_Lossy_Packet) {
0
};
}
non_null()
static void tox_event_friend_lossy_packet_destruct(Tox_Event_Friend_Lossy_Packet *friend_lossy_packet)
{
free(friend_lossy_packet->data);
}
non_null()
static void tox_event_friend_lossy_packet_set_friend_number(Tox_Event_Friend_Lossy_Packet *friend_lossy_packet,
uint32_t friend_number)
{
assert(friend_lossy_packet != nullptr);
friend_lossy_packet->friend_number = friend_number;
}
uint32_t tox_event_friend_lossy_packet_get_friend_number(const Tox_Event_Friend_Lossy_Packet *friend_lossy_packet)
{
assert(friend_lossy_packet != nullptr);
return friend_lossy_packet->friend_number;
}
non_null()
static bool tox_event_friend_lossy_packet_set_data(Tox_Event_Friend_Lossy_Packet *friend_lossy_packet,
const uint8_t *data, uint32_t data_length)
{
assert(friend_lossy_packet != nullptr);
if (friend_lossy_packet->data != nullptr) {
free(friend_lossy_packet->data);
friend_lossy_packet->data = nullptr;
friend_lossy_packet->data_length = 0;
}
friend_lossy_packet->data = (uint8_t *)malloc(data_length);
if (friend_lossy_packet->data == nullptr) {
return false;
}
memcpy(friend_lossy_packet->data, data, data_length);
friend_lossy_packet->data_length = data_length;
return true;
}
uint32_t tox_event_friend_lossy_packet_get_data_length(const Tox_Event_Friend_Lossy_Packet *friend_lossy_packet)
{
assert(friend_lossy_packet != nullptr);
return friend_lossy_packet->data_length;
}
const uint8_t *tox_event_friend_lossy_packet_get_data(const Tox_Event_Friend_Lossy_Packet *friend_lossy_packet)
{
assert(friend_lossy_packet != nullptr);
return friend_lossy_packet->data;
}
non_null()
static bool tox_event_friend_lossy_packet_pack(
const Tox_Event_Friend_Lossy_Packet *event, Bin_Pack *bp)
{
assert(event != nullptr);
return bin_pack_array(bp, 2)
&& bin_pack_u32(bp, TOX_EVENT_FRIEND_LOSSY_PACKET)
&& bin_pack_array(bp, 2)
&& bin_pack_u32(bp, event->friend_number)
&& bin_pack_bin(bp, event->data, event->data_length);
}
non_null()
static bool tox_event_friend_lossy_packet_unpack(
Tox_Event_Friend_Lossy_Packet *event, Bin_Unpack *bu)
{
assert(event != nullptr);
if (!bin_unpack_array_fixed(bu, 2)) {
return false;
}
return bin_unpack_u32(bu, &event->friend_number)
&& bin_unpack_bin(bu, &event->data, &event->data_length);
}
/*****************************************************
*
* :: add/clear/get
*
*****************************************************/
non_null()
static Tox_Event_Friend_Lossy_Packet *tox_events_add_friend_lossy_packet(Tox_Events *events)
{
if (events->friend_lossy_packet_size == UINT32_MAX) {
return nullptr;
}
if (events->friend_lossy_packet_size == events->friend_lossy_packet_capacity) {
const uint32_t new_friend_lossy_packet_capacity = events->friend_lossy_packet_capacity * 2 + 1;
Tox_Event_Friend_Lossy_Packet *new_friend_lossy_packet = (Tox_Event_Friend_Lossy_Packet *)realloc(
events->friend_lossy_packet, new_friend_lossy_packet_capacity * sizeof(Tox_Event_Friend_Lossy_Packet));
if (new_friend_lossy_packet == nullptr) {
return nullptr;
}
events->friend_lossy_packet = new_friend_lossy_packet;
events->friend_lossy_packet_capacity = new_friend_lossy_packet_capacity;
}
Tox_Event_Friend_Lossy_Packet *const friend_lossy_packet =
&events->friend_lossy_packet[events->friend_lossy_packet_size];
tox_event_friend_lossy_packet_construct(friend_lossy_packet);
++events->friend_lossy_packet_size;
return friend_lossy_packet;
}
void tox_events_clear_friend_lossy_packet(Tox_Events *events)
{
if (events == nullptr) {
return;
}
for (uint32_t i = 0; i < events->friend_lossy_packet_size; ++i) {
tox_event_friend_lossy_packet_destruct(&events->friend_lossy_packet[i]);
}
free(events->friend_lossy_packet);
events->friend_lossy_packet = nullptr;
events->friend_lossy_packet_size = 0;
events->friend_lossy_packet_capacity = 0;
}
uint32_t tox_events_get_friend_lossy_packet_size(const Tox_Events *events)
{
if (events == nullptr) {
return 0;
}
return events->friend_lossy_packet_size;
}
const Tox_Event_Friend_Lossy_Packet *tox_events_get_friend_lossy_packet(const Tox_Events *events, uint32_t index)
{
assert(index < events->friend_lossy_packet_size);
assert(events->friend_lossy_packet != nullptr);
return &events->friend_lossy_packet[index];
}
bool tox_events_pack_friend_lossy_packet(const Tox_Events *events, Bin_Pack *bp)
{
const uint32_t size = tox_events_get_friend_lossy_packet_size(events);
for (uint32_t i = 0; i < size; ++i) {
if (!tox_event_friend_lossy_packet_pack(tox_events_get_friend_lossy_packet(events, i), bp)) {
return false;
}
}
return true;
}
bool tox_events_unpack_friend_lossy_packet(Tox_Events *events, Bin_Unpack *bu)
{
Tox_Event_Friend_Lossy_Packet *event = tox_events_add_friend_lossy_packet(events);
if (event == nullptr) {
return false;
}
return tox_event_friend_lossy_packet_unpack(event, bu);
}
/*****************************************************
*
* :: event handler
*
*****************************************************/
void tox_events_handle_friend_lossy_packet(Tox *tox, uint32_t friend_number, const uint8_t *data, size_t length,
void *user_data)
{
Tox_Events_State *state = tox_events_alloc(user_data);
assert(state != nullptr);
if (state->events == nullptr) {
return;
}
Tox_Event_Friend_Lossy_Packet *friend_lossy_packet = tox_events_add_friend_lossy_packet(state->events);
if (friend_lossy_packet == nullptr) {
state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;
return;
}
tox_event_friend_lossy_packet_set_friend_number(friend_lossy_packet, friend_number);
tox_event_friend_lossy_packet_set_data(friend_lossy_packet, data, length);
}