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Server.c
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Server.c
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// Copyright DarkNeutrino 2021
#include "Server.h"
#include "../Extern/libmapvxl/libmapvxl.h"
#include "Commands.h"
#include "Gamemodes.h"
#include "Map.h"
#include "Master.h"
#include "Packets.h"
#include "ParseConvert.h"
#include "Ping.h"
#include "Protocol.h"
#include "Structs.h"
#include "Util/Compress.h"
#include "Util/DataStream.h"
#include "Util/Enums.h"
#include "Util/JSONHelpers.h"
#include "Util/Line.h"
#include "Util/Queue.h"
#include "Util/Types.h"
#include "Util/Utlist.h"
#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 <stdio.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 server;
pthread_mutex_t serverLock;
volatile int ctrlc = 0;
Server* getServer()
{
return &server; // Needed when we cant pass Server as argument into function
}
static void freeStringNodes(stringNode* root)
{
stringNode *el, *tmp;
DL_FOREACH_SAFE(root, el, tmp)
{
free(el->string);
DL_DELETE(root, el);
free(el);
}
}
static void forPlayers()
{
for (int playerID = 0; playerID < server.protocol.maxPlayers; ++playerID) {
if (isPastJoinScreen(&server, playerID)) {
uint64 timeNow = getNanos();
if (server.player[playerID].primary_fire == 1 && server.player[playerID].reloading == 0) {
if (server.player[playerID].weaponClip > 0) {
uint64 milliseconds = 0;
switch (server.player[playerID].weapon) {
case WEAPON_RIFLE:
{
milliseconds = 500;
break;
}
case WEAPON_SMG:
{
milliseconds = 100;
break;
}
case WEAPON_SHOTGUN:
{
milliseconds = 1000;
break;
}
}
if (diffIsOlderThen(
timeNow, &server.player[playerID].timers.sinceLastWeaponInput, NANO_IN_MILLI * milliseconds)) {
server.player[playerID].weaponClip--;
}
}
} else if (server.player[playerID].primary_fire == 0 && server.player[playerID].reloading == 1) {
switch (server.player[playerID].weapon) {
case WEAPON_RIFLE:
case WEAPON_SMG:
{
if (diffIsOlderThen(
timeNow, &server.player[playerID].timers.sinceReloadStart, NANO_IN_MILLI * (uint64) 2500)) {
uint8 defaultAmmo = RIFLE_DEFAULT_CLIP;
if (server.player[playerID].weapon == WEAPON_SMG) {
defaultAmmo = SMG_DEFAULT_CLIP;
}
double newReserve = fmax(0,
server.player[playerID].weaponReserve -
(defaultAmmo - server.player[playerID].weaponClip));
server.player[playerID].weaponClip += server.player[playerID].weaponReserve - newReserve;
server.player[playerID].weaponReserve = newReserve;
server.player[playerID].reloading = 0;
sendWeaponReload(&server, playerID, 0, 0, 0);
}
break;
}
case WEAPON_SHOTGUN:
{
if (diffIsOlderThen(
timeNow, &server.player[playerID].timers.sinceReloadStart, NANO_IN_MILLI * (uint64) 500)) {
if (server.player[playerID].weaponReserve == 0 || server.player[playerID].weaponClip == SHOTGUN_DEFAULT_CLIP) {
server.player[playerID].reloading = 0;
break;
}
server.player[playerID].weaponClip++;
server.player[playerID].weaponReserve--;
if (server.player[playerID].weaponClip == SHOTGUN_DEFAULT_CLIP) {
server.player[playerID].reloading = 0;
}
sendWeaponReload(&server, playerID, 0, 0, 0);
}
break;
}
}
}
if (diffIsOlderThen(timeNow,
&server.player[playerID].timers.sincePeriodicMessage,
(uint64) (server.periodicDelays[server.player[playerID].periodicDelayIndex] * 60) *
NANO_IN_SECOND))
{
stringNode* message;
DL_FOREACH(server.periodicMessages, message)
{
sendServerNotice(&server, playerID, 0, message->string);
}
server.player[playerID].periodicDelayIndex = fmin(server.player[playerID].periodicDelayIndex + 1, 4);
}
} else if (isPastStateData(&server, playerID)) {
}
}
}
static void* calculatePhysics()
{
server.globalTimers.updateTime = getNanos();
if (server.globalTimers.updateTime - server.globalTimers.lastUpdateTime >= (1000000000 / 60)) {
updateMovementAndGrenades(&server);
server.globalTimers.lastUpdateTime = getNanos();
}
return 0;
}
static void ServerInit(Server* server,
uint32 connections,
const char* serverName,
const char* team1Name,
const char* team2Name,
uint8* team1Color,
uint8* team2Color,
uint8 gamemode,
uint8 reset)
{
server->globalTimers.updateTime = server->globalTimers.lastUpdateTime = getNanos();
if (reset == 0) {
server->protocol.numPlayers = 0;
server->protocol.maxPlayers = (connections <= 32) ? connections : 32;
}
server->map.compressedMap = NULL;
server->map.compressedSize = 0;
server->protocol.inputFlags = 0;
char vxlMap[64];
uint8 index;
if (reset == 0) {
srand(time(NULL));
}
index = rand() % server->map.mapCount;
server->map.currentMap = server->map.mapList;
for (int i = 0; i <= index; ++i) {
if (server->map.currentMap->next != NULL) {
server->map.currentMap = server->map.currentMap->next;
} else {
break; // Safety if we by some magical reason go beyond the list
}
}
snprintf(
server->mapName, fmin(strlen(server->map.currentMap->string) + 1, 20), "%s", server->map.currentMap->string);
LOG_STATUS("Selecting %s as map", server->mapName);
snprintf(vxlMap, 64, "%s.vxl", server->map.currentMap->string);
LOG_STATUS("Loading spawn ranges from map file");
char mapConfig[64];
snprintf(mapConfig, 64, "%s.json", server->map.currentMap->string);
struct json_object* parsed_map_json;
parsed_map_json = json_object_from_file(mapConfig);
int team1Start[2];
int team2Start[2];
int team1End[2];
int team2End[2];
int mapSize[3];
const char* author;
READ_INT_ARR_FROM_JSON(parsed_map_json, team1Start, team1_start, "team1 start", ((int[]){0, 0}), 2, 0)
READ_INT_ARR_FROM_JSON(parsed_map_json, team1End, team1_end, "team1 end", ((int[]){10, 10}), 2, 0)
READ_INT_ARR_FROM_JSON(parsed_map_json, team2Start, team2_start, "team2 start", ((int[]){20, 20}), 2, 0)
READ_INT_ARR_FROM_JSON(parsed_map_json, team2End, team2_end, "team2 end", ((int[]){30, 30}), 2, 0)
READ_INT_ARR_FROM_JSON(parsed_map_json, mapSize, 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 (LoadMap(server, vxlMap, mapSize) == 0) {
return;
}
Vector3f empty = {0, 0, 0};
Vector3f forward = {1, 0, 0};
Vector3f height = {0, 0, 1};
Vector3f strafe = {0, 1, 0};
for (uint32 i = 0; i < server->protocol.maxPlayers; ++i) {
initPlayer(server, i, reset, 0, empty, forward, strafe, height);
}
server->globalAB = 1;
server->globalAK = 1;
server->protocol.spawns[0].from.x = team1Start[0];
server->protocol.spawns[0].from.y = team1Start[1];
server->protocol.spawns[0].to.x = team1End[0];
server->protocol.spawns[0].to.y = team1End[1];
server->protocol.spawns[1].from.x = team2Start[0];
server->protocol.spawns[1].from.y = team2Start[1];
server->protocol.spawns[1].to.x = team2End[0];
server->protocol.spawns[1].to.y = team2End[1];
server->protocol.colorFog.colorArray[0] = 0x80;
server->protocol.colorFog.colorArray[1] = 0xE8;
server->protocol.colorFog.colorArray[2] = 0xFF;
server->protocol.colorTeam[0].colorArray[B_CHANNEL] = team1Color[B_CHANNEL];
server->protocol.colorTeam[0].colorArray[G_CHANNEL] = team1Color[G_CHANNEL];
server->protocol.colorTeam[0].colorArray[R_CHANNEL] = team1Color[R_CHANNEL];
server->protocol.colorTeam[1].colorArray[B_CHANNEL] = team2Color[B_CHANNEL];
server->protocol.colorTeam[1].colorArray[G_CHANNEL] = team2Color[G_CHANNEL];
server->protocol.colorTeam[1].colorArray[R_CHANNEL] = team2Color[R_CHANNEL];
memcpy(server->protocol.nameTeam[0], team1Name, strlen(team1Name));
memcpy(server->protocol.nameTeam[1], team2Name, strlen(team2Name));
server->protocol.nameTeam[0][strlen(team1Name)] = '\0';
server->protocol.nameTeam[1][strlen(team2Name)] = '\0';
memcpy(server->serverName, serverName, strlen(serverName));
server->serverName[strlen(serverName)] = '\0';
initGameMode(server, gamemode);
}
void ServerReset(Server* server)
{
ServerInit(server,
server->protocol.maxPlayers,
server->serverName,
server->protocol.nameTeam[0],
server->protocol.nameTeam[1],
server->protocol.colorTeam[0].colorArray,
server->protocol.colorTeam[1].colorArray,
server->protocol.currentGameMode,
1);
}
static void SendJoiningData(Server* server, uint8 playerID)
{
LOG_INFO("Sending state to %s (#%hhu)", server->player[playerID].name, playerID);
for (uint8 i = 0; i < server->protocol.maxPlayers; ++i) {
if (i != playerID && isPastJoinScreen(server, i)) {
sendExistingPlayer(server, playerID, i);
}
}
sendStateData(server, playerID);
}
static uint8 OnConnect(Server* server)
{
if (server->protocol.numPlayers == server->protocol.maxPlayers) {
return 0xFF;
}
uint8 playerID;
for (playerID = 0; playerID < server->protocol.maxPlayers; ++playerID) {
if (server->player[playerID].state == STATE_DISCONNECTED) {
server->player[playerID].state = STATE_STARTING_MAP;
break;
}
}
server->protocol.numPlayers++;
return playerID;
}
static void OnPlayerUpdate(Server* server, uint8 playerID)
{
switch (server->player[playerID].state) {
case STATE_STARTING_MAP:
sendMapStart(server, playerID);
break;
case STATE_LOADING_CHUNKS:
sendMapChunks(server, playerID);
break;
case STATE_JOINING:
SendJoiningData(server, playerID);
break;
case STATE_SPAWNING:
server->player[playerID].HP = 100;
server->player[playerID].grenades = 3;
server->player[playerID].blocks = 50;
server->player[playerID].item = 2;
server->player[playerID].input = 0;
server->player[playerID].movForward = 0;
server->player[playerID].movBackwards = 0;
server->player[playerID].movLeft = 0;
server->player[playerID].movRight = 0;
server->player[playerID].jumping = 0;
server->player[playerID].crouching = 0;
server->player[playerID].sneaking = 0;
server->player[playerID].sprinting = 0;
server->player[playerID].primary_fire = 0;
server->player[playerID].secondary_fire = 0;
server->player[playerID].alive = 1;
server->player[playerID].reloading = 0;
SetPlayerRespawnPoint(server, playerID);
SendRespawn(server, playerID);
LOG_INFO("Player %s (#%hhu) spawning at: %f %f %f",
server->player[playerID].name,
playerID,
server->player[playerID].movement.position.x,
server->player[playerID].movement.position.y,
server->player[playerID].movement.position.z);
break;
case STATE_WAITING_FOR_RESPAWN:
{
if (time(NULL) - server->player[playerID].timers.startOfRespawnWait >= server->player[playerID].respawnTime)
{
server->player[playerID].state = STATE_SPAWNING;
}
break;
}
case STATE_READY:
// send data
if (server->master.enableMasterConnection == 1) {
if (server->player[playerID].toldToMaster == 0) {
updateMaster(server);
server->player[playerID].toldToMaster = 1;
}
}
break;
default:
// disconnected
break;
}
}
static void* WorldUpdate()
{
for (uint8 playerID = 0; playerID < server.protocol.maxPlayers; ++playerID) {
OnPlayerUpdate(&server, playerID);
if (isPastJoinScreen(&server, playerID)) {
uint64 time = getNanos();
if (time - server.player[playerID].timers.timeSinceLastWU >=
(uint64) (NANO_IN_SECOND / server.player[playerID].ups)) {
SendWorldUpdate(&server, playerID);
server.player[playerID].timers.timeSinceLastWU = getNanos();
}
}
}
return 0;
}
static void ServerUpdate(Server* server, int timeout)
{
ENetEvent event;
while (enet_host_service(server->host, &event, timeout) > 0) {
uint8 bannedUser = 0;
uint8 playerID;
switch (event.type) {
case ENET_EVENT_TYPE_NONE:
LOG_STATUS("Event of type none received. Ignoring");
break;
case ENET_EVENT_TYPE_CONNECT:
if (event.data != VERSION_0_75) {
enet_peer_disconnect_now(event.peer, REASON_WRONG_PROTOCOL_VERSION);
break;
}
struct json_object* root = json_object_from_file("Bans.json");
if (root == NULL) {
FILE* fp;
fp = fopen("Bans.json", "w+");
if (fp == NULL) {
perror("Unable to open/create Bans.json with error: ");
exit(EXIT_FAILURE);
}
fclose(fp);
root = json_object_new_object();
json_object_object_add(root, "Bans", json_object_new_array());
json_object_to_file("Bans.json", root);
}
IPStruct hostIP;
hostIP.CIDR = 24;
hostIP.Union.ip32 = event.peer->address.host;
struct json_object* array;
json_object_object_get_ex(root, "Bans", &array);
int count = json_object_array_length(array);
for (int i = 0; i < count; ++i) {
struct json_object* objectAtIndex = json_object_array_get_idx(array, i);
const char* IP;
const char* startOfRangeString;
const char* endOfRangeString;
READ_STR_FROM_JSON(
objectAtIndex, startOfRangeString, start_of_range, "start of range", "0.0.0.0", 1);
READ_STR_FROM_JSON(objectAtIndex, endOfRangeString, end_of_range, "end of range", "0.0.0.0", 1);
READ_STR_FROM_JSON(objectAtIndex, IP, IP, "IP", "0.0.0.0", 1);
IPStruct ipStruct;
IPStruct startOfRange, endOfRange;
if (formatStringToIP((char*) IP, &ipStruct) &&
(formatStringToIP((char*) startOfRangeString, &startOfRange) &&
formatStringToIP((char*) endOfRangeString, &endOfRange)))
{
if (IPInRange(hostIP, ipStruct, startOfRange, endOfRange)) {
const char* nameOfPlayer;
const char* reason;
double time = 0.0f;
uint64 timeNow = getNanos();
READ_STR_FROM_JSON(objectAtIndex, nameOfPlayer, Name, "Name", "Deuce", 0);
READ_STR_FROM_JSON(objectAtIndex, reason, Reason, "Reason", "None", 0);
READ_DOUBLE_FROM_JSON(objectAtIndex, time, Time, "Time", 0.0f, 0);
if (((long double) timeNow / NANO_IN_MINUTE) > time && time != 0) {
json_object_array_del_idx(array, i, 1);
json_object_to_file("Bans.json", root);
continue; // Continue searching for bans and delete all the old ones that match host IP
// or its range
} else {
enet_peer_disconnect(event.peer, REASON_BANNED);
LOG_WARNING("Banned user %s tried to join with IP: %hhu.%hhu.%hhu.%hhu Banned for: %s",
nameOfPlayer,
hostIP.Union.ip[0],
hostIP.Union.ip[1],
hostIP.Union.ip[2],
hostIP.Union.ip[3],
reason);
bannedUser = 1;
event.peer->data = (void*) ((size_t) server->protocol.maxPlayers - 1);
break;
}
}
}
}
json_object_put(root);
if (bannedUser) {
break;
}
// check peer
// ...
// find next free ID
playerID = OnConnect(server);
if (playerID == 0xFF) {
enet_peer_disconnect_now(event.peer, REASON_SERVER_FULL);
LOG_WARNING("Server full. Kicking player");
break;
}
server->player[playerID].peer = event.peer;
event.peer->data = (void*) ((size_t) playerID);
server->player[playerID].HP = 100;
server->player[playerID].ipStruct.Union.ip32 = event.peer->address.host;
formatIPToString(server->player[playerID].name, server->player[playerID].ipStruct);
snprintf(server->player[playerID].name, 6, "Limbo");
char ipString[17];
formatIPToString(ipString, server->player[playerID].ipStruct);
LOG_INFO("Player %s (%s, #%hhu) connected", server->player[playerID].name, ipString, playerID);
server->player[playerID].timers.sincePeriodicMessage = getNanos();
server->player[playerID].currentPeriodicMessage = server->periodicMessages;
server->player[playerID].periodicDelayIndex = 0;
break;
case ENET_EVENT_TYPE_DISCONNECT:
playerID = (uint8) ((size_t) event.peer->data);
if (playerID != server->protocol.maxPlayers - 1) {
sendIntelDrop(server, playerID);
sendPlayerLeft(server, playerID);
Vector3f empty = {0, 0, 0};
Vector3f forward = {1, 0, 0};
Vector3f height = {0, 0, 1};
Vector3f strafe = {0, 1, 0};
initPlayer(server, playerID, 0, 1, empty, forward, strafe, height);
server->protocol.numPlayers--;
server->protocol.teamUserCount[server->player[playerID].team]--;
if (server->master.enableMasterConnection == 1) {
updateMaster(server);
}
}
break;
case ENET_EVENT_TYPE_RECEIVE:
{
DataStream stream = {event.packet->data, event.packet->dataLength, 0};
playerID = (uint8) ((size_t) event.peer->data);
OnPacketReceived(server, playerID, &stream, event);
enet_packet_destroy(event.packet);
break;
}
}
}
}
void ReadlineNewLine(int signal)
{
(void) signal; // To prevent a warning about unused variable
ctrlc = 1;
printf("\n");
LOG_INFO("Are you sure you want to exit? (Y/n)");
if (write(STDIN_FILENO, "\n", sizeof("\n")) != sizeof("\n")) {
LOG_DEBUG("epic write fail");
}
rl_replace_line("", 0);
rl_on_new_line();
rl_redisplay();
}
void StopServer()
{
server.running = 0;
}
static void* serverConsole(void* arg)
{
(void) arg;
char* buf;
while ((buf = readline("\x1B[0;34mConsole> \x1B[0;37m")) != NULL) {
if (ctrlc) { // "Are you sure?" prompt
if (strcmp("n", buf) != 0) {
break;
}
ctrlc = 0;
} else if (strlen(buf) > 0) {
add_history(buf);
pthread_mutex_lock(&serverLock);
handleCommands(&server, 255, buf, 1);
pthread_mutex_unlock(&serverLock);
}
free(buf);
}
rl_clear_history();
StopServer();
sleep(5); // wait 5 seconds for the server to stop
// if this thread is not dead at this point, then we need to stop the server by force >:)
LOG_ERROR("Server did not respond for 5 seconds. Killing it with fire...");
exit(-1);
return 0;
}
void StartServer(uint16 port,
uint32 connections,
uint32 channels,
uint32 inBandwidth,
uint32 outBandwidth,
uint8 master,
stringNode* mapList,
uint8 mapCount,
stringNode* welcomeMessageList,
uint8 welcomeMessageListLen,
stringNode* periodicMessageList,
uint8 periodicMessageListLen,
uint8* periodicDelays,
const char* managerPasswd,
const char* adminPasswd,
const char* modPasswd,
const char* guardPasswd,
const char* trustedPasswd,
const char* serverName,
const char* team1Name,
const char* team2Name,
uint8* team1Color,
uint8* team2Color,
uint8 gamemode)
{
server.globalTimers.timeSinceStart = getNanos();
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(&serverLock, NULL) != 0) {
LOG_ERROR("Server mutex failed to initialize");
exit(EXIT_FAILURE);
}
ENetAddress address;
address.host = ENET_HOST_ANY;
address.port = port;
LOG_STATUS("Creating server at port %d", port);
server.host = enet_host_create(&address, connections, channels, inBandwidth, outBandwidth);
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 = port;
server.host->intercept = &rawUdpInterceptCallback;
LOG_STATUS("Intializing server");
server.running = 1;
server.map.mapList = mapList;
server.map.mapCount = mapCount;
server.welcomeMessages = welcomeMessageList;
server.welcomeMessageCount = welcomeMessageListLen;
server.periodicMessages = periodicMessageList;
server.periodicMessageCount = periodicMessageListLen;
server.periodicDelays = periodicDelays;
ServerInit(&server, connections, serverName, team1Name, team2Name, team1Color, team2Color, gamemode, 0);
populateCommands(&server);
server.master.enableMasterConnection = master;
server.managerPasswd = managerPasswd;
server.adminPasswd = adminPasswd;
server.modPasswd = modPasswd;
server.guardPasswd = guardPasswd;
server.trustedPasswd = trustedPasswd;
if (server.running) {
LOG_STATUS("Server started");
}
if (server.master.enableMasterConnection == 1) {
ConnectMaster(&server, port);
}
server.master.timeSinceLastSend = time(NULL);
pthread_t masterThread;
pthread_create(&masterThread, NULL, keepMasterAlive, (void*) &server);
pthread_detach(masterThread);
rl_catch_signals = 0;
pthread_t console;
pthread_create(&console, NULL, serverConsole, NULL);
pthread_detach(console);
signal(SIGINT, ReadlineNewLine);
while (server.running) {
pthread_mutex_lock(&serverLock);
calculatePhysics();
ServerUpdate(&server, 0);
WorldUpdate();
forPlayers();
pthread_mutex_unlock(&serverLock);
sleep(0);
}
while (server.map.compressedMap) {
server.map.compressedMap = Pop(server.map.compressedMap);
}
free(server.map.compressedMap);
freeCommands(&server);
freeStringNodes(server.welcomeMessages);
freeStringNodes(server.map.mapList);
freeStringNodes(server.periodicMessages);
mapvxlFree(&server.map.map);
pthread_mutex_destroy(&serverLock);
printf("\n");
LOG_STATUS("Exiting");
enet_host_destroy(server.host);
}