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Server.c
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Server.c
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// Copyright DarkNeutrino 2021
#include <Server/Commands/Commands.h>
#include <Server/Console.h>
#include <Server/Gamemodes/Gamemodes.h>
#include <Server/Map.h>
#include <Server/Master.h>
#include <Server/Packets/Packets.h>
#include <Server/ParseConvert.h>
#include <Server/Ping.h>
#include <Server/Player.h>
#include <Server/Server.h>
#include <Server/Structs/GrenadeStruct.h>
#include <Server/Structs/ServerStruct.h>
#include <Server/Structs/StartStruct.h>
#include <Util/Checks/PlayerChecks.h>
#include <Util/Checks/PositionChecks.h>
#include <Util/Compress.h>
#include <Util/DataStream.h>
#include <Util/Enums.h>
#include <Util/JSONHelpers.h>
#include <Util/Line.h>
#include <Util/Log.h>
#include <Util/Nanos.h>
#include <Util/Physics.h>
#include <Util/Queue.h>
#include <Util/Types.h>
#include <Util/Uthash.h>
#include <Util/Utlist.h>
#include <libmapvxl/libmapvxl.h>
#include <stddef.h>
#include <stdio.h>
// Include stdio before readline cause it needs it for some reason
#include <enet/enet.h>
#include <errno.h>
#include <json-c/json.h>
#include <json-c/json_object.h>
#include <json-c/json_types.h>
#include <json-c/json_util.h>
#include <math.h>
#include <pthread.h>
#include <readline/history.h>
#include <readline/readline.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
server_t server;
pthread_mutex_t server_lock;
server_t* get_server(void)
{
return &server; // Needed when we cant pass Server as argument into function
}
static void _string_nodes_free(string_node_t* root)
{
string_node_t *el, *tmp;
DL_FOREACH_SAFE(root, el, tmp)
{
free(el->string);
DL_DELETE(root, el);
free(el);
}
}
static void* _calculate_physics(void)
{
server.global_timers.update_time = get_nanos();
if (server.global_timers.update_time - server.global_timers.last_update_time >= (NANO_60TPS)) {
update_movement_and_grenades(&server);
server.global_timers.last_update_time = get_nanos();
}
return 0;
}
static void _server_init(server_t* server,
uint32_t connections,
const char* serverName,
const char* team1Name,
const char* team2Name,
uint8_t* team1_color,
uint8_t* team2_color,
uint8_t gamemode,
uint8_t reset)
{
server->global_timers.update_time = server->global_timers.last_update_time = get_nanos();
if (reset == 0) {
server->protocol.num_players = 0;
server->protocol.max_players = (connections <= 32) ? connections : 32;
}
server->s_map.compressed_map = NULL;
server->s_map.compressed_size = 0;
server->protocol.input_flags = 0;
char vxl_map[64];
uint8_t index;
if (reset == 0) {
srand(time(NULL));
}
index = rand() % server->s_map.map_count;
server->s_map.current_map = server->s_map.map_list;
for (int i = 0; i <= index; ++i) {
if (server->s_map.current_map->next != NULL) {
server->s_map.current_map = server->s_map.current_map->next;
} else {
break; // Safety if we by some magical reason go beyond the list
}
}
snprintf(
server->map_name, fmin(strlen(server->s_map.current_map->string) + 1, 20), "%s", server->s_map.current_map->string);
LOG_STATUS("Selecting %s as map", server->map_name);
snprintf(vxl_map, 64, "%s.vxl", server->s_map.current_map->string);
LOG_STATUS("Loading spawn ranges from map file");
char mapConfig[64];
snprintf(mapConfig, 64, "%s.json", server->s_map.current_map->string);
struct json_object* parsed_map_json;
parsed_map_json = json_object_from_file(mapConfig);
int team1_start[2];
int team2_start[2];
int team1_end[2];
int team2_end[2];
int fog_color[3];
int map_size[3];
const char* author;
READ_INT_ARR_FROM_JSON(parsed_map_json, team1_start, team1_start, "team1 start", ((int[]){0, 0}), 2, 0)
READ_INT_ARR_FROM_JSON(parsed_map_json, team1_end, team1_end, "team1 end", ((int[]){10, 10}), 2, 0)
READ_INT_ARR_FROM_JSON(parsed_map_json, team2_start, team2_start, "team2 start", ((int[]){20, 20}), 2, 0)
READ_INT_ARR_FROM_JSON(parsed_map_json, team2_end, team2_end, "team2 end", ((int[]){30, 30}), 2, 0)
READ_INT_ARR_FROM_JSON(parsed_map_json, fog_color, fog_color, "fog color", ((int[]){128, 232, 255}), 3, 0)
READ_INT_ARR_FROM_JSON(parsed_map_json, map_size, map_size, "map size", ((int[]){512, 512, 64}), 3, 1)
READ_STR_FROM_JSON(parsed_map_json, author, author, "author", "Unknown", 0)
(void) author;
json_object_put(parsed_map_json);
if (map_load(server, vxl_map, map_size) == 0) {
return;
}
vector3i_t team1_start_range = {team1_start[0], team1_start[1], 1};
vector3i_t team1_end_range = {team1_end[0], team1_end[1], 1};
vector3i_t team2_start_range = {team2_start[0], team2_start[1], 1};
vector3i_t team2_end_range = {team2_end[0], team2_end[1], 1};
if (valid_pos_v3i(server, team1_start_range) == 0 || valid_pos_v3i(server, team2_start_range) == 0 ||
valid_pos_v3i(server, team1_end_range) == 0 || valid_pos_v3i(server, team2_end_range) == 0)
{
LOG_ERROR("Map spawn ranges are outside of map limits");
exit(EXIT_FAILURE);
}
if (reset) {
vector3f_t empty = {0, 0, 0};
vector3f_t forward = {1, 0, 0};
vector3f_t height = {0, 0, 1};
vector3f_t strafe = {0, 1, 0};
player_t * player, *tmp;
HASH_ITER(hh, server->players, player, tmp)
{
init_player(server, player, reset, 0, empty, forward, strafe, height);
}
}
server->global_ab = 1;
server->global_ak = 1;
server->protocol.spawns[0].from.x = team1_start[0];
server->protocol.spawns[0].from.y = team1_start[1];
server->protocol.spawns[0].to.x = team1_end[0];
server->protocol.spawns[0].to.y = team1_end[1];
server->protocol.spawns[1].from.x = team2_start[0];
server->protocol.spawns[1].from.y = team2_start[1];
server->protocol.spawns[1].to.x = team2_end[0];
server->protocol.spawns[1].to.y = team2_end[1];
server->protocol.color_fog.r = fog_color[0];
server->protocol.color_fog.g = fog_color[1];
server->protocol.color_fog.b = fog_color[2];
server->protocol.color_team[0].b = team1_color[B_CHANNEL];
server->protocol.color_team[0].g = team1_color[G_CHANNEL];
server->protocol.color_team[0].r = team1_color[R_CHANNEL];
server->protocol.color_team[1].b = team2_color[B_CHANNEL];
server->protocol.color_team[1].g = team2_color[G_CHANNEL];
server->protocol.color_team[1].r = team2_color[R_CHANNEL];
memcpy(server->protocol.name_team[0], team1Name, strlen(team1Name));
memcpy(server->protocol.name_team[1], team2Name, strlen(team2Name));
server->protocol.name_team[0][strlen(team1Name)] = '\0';
server->protocol.name_team[1][strlen(team2Name)] = '\0';
memcpy(server->server_name, serverName, strlen(serverName));
server->server_name[strlen(serverName)] = '\0';
gamemode_init(server, gamemode);
}
void server_reset(server_t* server)
{
_server_init(server,
server->protocol.max_players,
server->server_name,
server->protocol.name_team[0],
server->protocol.name_team[1],
server->protocol.color_team[0].arr,
server->protocol.color_team[1].arr,
server->protocol.current_gamemode,
1);
}
static void* _world_update(void)
{
player_t *player, *tmp;
HASH_ITER(hh, server.players, player, tmp)
{
on_player_update(&server, player);
if (is_past_join_screen(player)) {
uint64_t time = get_nanos();
if (time - player->timers.time_since_last_wu >= (uint64_t) (NANO_IN_SECOND / player->ups)) {
send_world_update(&server, player);
player->timers.time_since_last_wu = get_nanos();
}
}
}
return 0;
}
static void _server_update(server_t* server, int timeout)
{
ENetEvent event;
while (enet_host_service(server->host, &event, timeout) > 0) {
uint8_t player_id;
switch (event.type) {
case ENET_EVENT_TYPE_NONE:
LOG_STATUS("Event of type none received. Ignoring");
break;
case ENET_EVENT_TYPE_CONNECT:
on_new_player_connection(server, &event);
break;
case ENET_EVENT_TYPE_DISCONNECT:
player_id = (uint8_t) ((size_t) event.peer->data);
if (player_id != server->protocol.max_players - 1) {
player_t* player;
HASH_FIND(hh, server->players, &player_id, sizeof(player_id), player);
if (player == NULL) {
LOG_ERROR("Server tried to disconnect non existent player!");
return;
}
send_intel_drop(server, player);
send_player_left(server, player);
vector3f_t empty = {0, 0, 0};
vector3f_t forward = {1, 0, 0};
vector3f_t height = {0, 0, 1};
vector3f_t strafe = {0, 1, 0};
init_player(server, player, 0, 1, empty, forward, strafe, height);
server->protocol.num_players--;
server->protocol.num_team_users[player->team]--;
if (server->master.enable_master_connection == 1) {
master_update(server);
}
grenade_t* elt;
uint32_t counter = 0;
DL_COUNT(player->grenade, elt, counter);
if (counter == 0) {
HASH_DEL(server->players, player);
HASH_SORT(server->players, player_sort);
free(player);
}
}
break;
case ENET_EVENT_TYPE_RECEIVE:
{
stream_t stream = {event.packet->data, event.packet->dataLength, 0};
player_id = ((size_t) event.peer->data) & 0xFF;
player_t* player;
HASH_FIND(hh, server->players, &player_id, sizeof(player_id), player);
if (player == NULL) {
LOG_ERROR("Could not find player with ID %hhu", player_id);
break;
}
on_packet_received(server, player, &stream);
enet_packet_destroy(event.packet);
break;
}
}
}
}
void stop_server(void)
{
server.running = 0;
}
void server_start(server_args args)
{
server.global_timers.time_since_start = get_nanos();
LOG_STATUS("Welcome to SpadesX server");
LOG_STATUS("Initializing ENet");
if (enet_initialize() != 0) {
LOG_ERROR("Failed to initalize ENet");
exit(EXIT_FAILURE);
}
atexit(enet_deinitialize);
if (pthread_mutex_init(&server_lock, NULL) != 0) {
LOG_ERROR("Server mutex failed to initialize");
exit(EXIT_FAILURE);
}
ENetAddress address;
address.host = ENET_HOST_ANY;
address.port = args.port;
LOG_STATUS("Creating server at port %d", args.port);
server.host = enet_host_create(&address, args.connections, args.channels, args.in_bandwidth, args.out_bandwidth);
if (server.host == NULL) {
LOG_ERROR("Failed to create server");
exit(EXIT_FAILURE);
}
if (enet_host_compress_with_range_coder(server.host) != 0) {
LOG_WARNING("Compress with range coder failed");
}
server.port = args.port;
server.host->intercept = &raw_udp_intercept_callback;
LOG_STATUS("Intializing server");
server.players = NULL;
server.running = 1;
server.s_map.map_list = args.map_list;
server.s_map.map_count = args.map_count;
server.welcome_messages = args.welcome_message_list;
server.welcome_messages_count = args.welcome_message_list_len;
server.periodic_messages = args.periodic_message_list;
server.periodic_message_count = args.periodic_message_list_len;
server.periodic_delays = args.periodic_delays;
_server_init(&server,
args.connections,
args.server_name,
args.team1_name,
args.team2_name,
args.team1_color,
args.team2_color,
args.gamemode,
0);
command_populate_all(&server);
init_packets(&server);
server.master.enable_master_connection = args.master;
server.manager_passwd = args.manager_password;
server.admin_passwd = args.admin_password;
server.mod_passwd = args.mod_password;
server.guard_passwd = args.guard_password;
server.trusted_passwd = args.trusted_password;
if (server.running) {
LOG_STATUS("Server started");
}
if (server.master.enable_master_connection == 1) {
master_connect(&server, args.port);
}
server.master.time_since_last_send = time(NULL);
pthread_t masterThread;
pthread_create(&masterThread, NULL, master_keep_alive, (void*) &server);
pthread_detach(masterThread);
rl_catch_signals = 0;
pthread_t console;
pthread_create(&console, NULL, server_console, (void*) &server);
pthread_detach(console);
signal(SIGINT, readline_new_line);
while (server.running) {
pthread_mutex_lock(&server_lock);
_calculate_physics();
_server_update(&server, 0);
_world_update();
for_players(&server);
pthread_mutex_unlock(&server_lock);
sleep(0);
}
queue_t *head, *tmp;
DL_FOREACH_SAFE(server.s_map.compressed_map, head, tmp)
{
free(head->block);
DL_DELETE(server.s_map.compressed_map, head);
free(head);
}
free(server.s_map.compressed_map);
free_all_commands(&server);
free_all_packets(&server);
free_all_players(&server);
_string_nodes_free(server.welcome_messages);
_string_nodes_free(server.s_map.map_list);
_string_nodes_free(server.periodic_messages);
mapvxl_free(&server.s_map.map);
pthread_mutex_destroy(&server_lock);
printf("\n");
LOG_STATUS("Exiting");
enet_host_destroy(server.host);
}