BeamMP-Server/src/Lua/LuaSystem.cpp
2020-11-08 02:50:17 +01:00

665 lines
21 KiB
C++

///
/// Created by Anonymous275 on 5/19/2020
///
#include "Lua/LuaSystem.hpp"
#include "Client.hpp"
#include "Logger.h"
#include "Network.h"
#include "Security/Enc.h"
#include "Settings.h"
#include "UnixCompat.h"
#include <future>
#include <iostream>
#include <utility>
#include <optional>
std::unique_ptr<LuaArg> CreateArg(lua_State* L, int T, int S) {
if (S > T)
return nullptr;
std::unique_ptr<LuaArg> temp(new LuaArg);
for (int C = S; C <= T; C++) {
if (lua_isstring(L, C)) {
temp->args.emplace_back(std::string(lua_tostring(L, C)));
} else if (lua_isinteger(L, C)) {
temp->args.emplace_back(int(lua_tointeger(L, C)));
} else if (lua_isboolean(L, C)) {
temp->args.emplace_back(bool(lua_toboolean(L, C)));
} else if (lua_isnumber(L, C)) {
temp->args.emplace_back(float(lua_tonumber(L, C)));
}
}
return temp;
}
void ClearStack(lua_State* L) {
lua_settop(L, 0);
}
std::optional<std::reference_wrapper<Lua>> GetScript(lua_State* L) {
for (auto& Script : PluginEngine) {
if (Script->GetState() == L)
return *Script;
}
return std::nullopt;
}
void SendError(lua_State* L, const std::string& msg) {
Assert(L);
auto MaybeS = GetScript(L);
std::string a;
if (!MaybeS.has_value()) {
a = Sec("_Console");
} else {
Lua& S = MaybeS.value();
a = S.GetFileName().substr(S.GetFileName().find('\\'));
}
warn(a + Sec(" | Incorrect Call of ") + msg);
}
int Trigger(Lua* lua, const std::string& R, std::unique_ptr<LuaArg> arg) {
std::lock_guard<std::mutex> lockGuard(lua->Lock);
std::packaged_task<int(std::unique_ptr<LuaArg>)> task([lua, R](std::unique_ptr<LuaArg> arg) { return CallFunction(lua, R, std::move(arg)); });
std::future<int> f1 = task.get_future();
std::thread t(std::move(task), std::move(arg));
t.detach();
auto status = f1.wait_for(std::chrono::seconds(5));
if (status != std::future_status::timeout)
return f1.get();
SendError(lua->GetState(), R + " took too long to respond");
return 0;
}
int FutureWait(Lua* lua, const std::string& R, std::unique_ptr<LuaArg> arg, bool Wait) {
Assert(lua);
std::packaged_task<int(std::unique_ptr<LuaArg>)> task([lua, R](std::unique_ptr<LuaArg> arg) { return Trigger(lua, R, std::move(arg)); });
std::future<int> f1 = task.get_future();
std::thread t(std::move(task), std::move(arg));
t.detach();
int T = 0;
if (Wait)
T = 6;
auto status = f1.wait_for(std::chrono::seconds(T));
if (status != std::future_status::timeout)
return f1.get();
return 0;
}
int TriggerLuaEvent(const std::string& Event, bool local, Lua* Caller, std::unique_ptr<LuaArg> arg, bool Wait) {
int R = 0;
for (auto& Script : PluginEngine) {
if (Script->IsRegistered(Event)) {
if (local) {
if (Script->GetPluginName() == Caller->GetPluginName()) {
R += FutureWait(Script.get(), Script->GetRegistered(Event), std::move(arg), Wait);
}
} else
R += FutureWait(Script.get(), Script->GetRegistered(Event), std::move(arg), Wait);
}
}
return R;
}
bool ConsoleCheck(lua_State* L, int r) {
if (r != LUA_OK) {
std::string msg = lua_tostring(L, -1);
warn(Sec("_Console | ") + msg);
return false;
}
return true;
}
bool CheckLua(lua_State* L, int r) {
if (r != LUA_OK) {
std::string msg = lua_tostring(L, -1);
auto MaybeS = GetScript(L);
if (MaybeS.has_value()) {
Lua& S = MaybeS.value();
std::string a = S.GetFileName().substr(S.GetFileName().find('\\'));
warn(a + " | " + msg);
return false;
}
// What the fuck, what do we do?!
AssertNotReachable();
}
return true;
}
int lua_RegisterEvent(lua_State* L) {
int Args = lua_gettop(L);
auto MaybeScript = GetScript(L);
Assert(MaybeScript.has_value());
Lua& Script = MaybeScript.value();
if (Args == 2 && lua_isstring(L, 1) && lua_isstring(L, 2)) {
Script.RegisterEvent(lua_tostring(L, 1), lua_tostring(L, 2));
} else
SendError(L, Sec("RegisterEvent invalid argument count expected 2 got ") + std::to_string(Args));
return 0;
}
int lua_TriggerEventL(lua_State* L) {
int Args = lua_gettop(L);
auto MaybeScript = GetScript(L);
Assert(MaybeScript.has_value());
Lua& Script = MaybeScript.value();
if (Args > 0) {
if (lua_isstring(L, 1)) {
TriggerLuaEvent(lua_tostring(L, 1), true, &Script, CreateArg(L, Args, 2), false);
} else
SendError(L, Sec("TriggerLocalEvent wrong argument [1] need string"));
} else {
SendError(L, Sec("TriggerLocalEvent not enough arguments expected 1 got 0"));
}
return 0;
}
int lua_TriggerEventG(lua_State* L) {
int Args = lua_gettop(L);
auto MaybeScript = GetScript(L);
Assert(MaybeScript.has_value());
Lua& Script = MaybeScript.value();
if (Args > 0) {
if (lua_isstring(L, 1)) {
TriggerLuaEvent(lua_tostring(L, 1), false, &Script, CreateArg(L, Args, 2), false);
} else
SendError(L, Sec("TriggerGlobalEvent wrong argument [1] need string"));
} else
SendError(L, Sec("TriggerGlobalEvent not enough arguments"));
return 0;
}
char* ThreadOrigin(Lua* lua) {
std::string T = "Thread in " + lua->GetFileName().substr(lua->GetFileName().find('\\'));
char* Data = new char[T.size() + 1];
ZeroMemory(Data, T.size() + 1);
memcpy(Data, T.c_str(), T.size());
return Data;
}
void SafeExecution(Lua* lua, const std::string& FuncName) {
lua_State* luaState = lua->GetState();
lua_getglobal(luaState, FuncName.c_str());
if (lua_isfunction(luaState, -1)) {
char* Origin = ThreadOrigin(lua);
#ifdef WIN32
__try {
int R = lua_pcall(luaState, 0, 0, 0);
CheckLua(luaState, R);
} __except (Handle(GetExceptionInformation(), Origin)) {
}
#else // unix
int R = lua_pcall(luaState, 0, 0, 0);
CheckLua(luaState, R);
#endif // WIN32
delete[] Origin;
}
ClearStack(luaState);
}
void ExecuteAsync(Lua* lua, const std::string& FuncName) {
std::lock_guard<std::mutex> lockGuard(lua->Lock);
SafeExecution(lua, FuncName);
}
void CallAsync(Lua* lua, const std::string& Func, int U) {
DebugPrintTID();
lua->SetStopThread(false);
int D = 1000 / U;
while (!lua->GetStopThread()) {
ExecuteAsync(lua, Func);
std::this_thread::sleep_for(std::chrono::milliseconds(D));
}
}
int lua_StopThread(lua_State* L) {
auto MaybeScript = GetScript(L);
Assert(MaybeScript.has_value());
// ugly, but whatever, this is safe as fuck
MaybeScript.value().get().SetStopThread(true);
return 0;
}
int lua_CreateThread(lua_State* L) {
int Args = lua_gettop(L);
if (Args > 1) {
if (lua_isstring(L, 1)) {
std::string STR = lua_tostring(L, 1);
if (lua_isinteger(L, 2) || lua_isnumber(L, 2)) {
int U = int(lua_tointeger(L, 2));
if (U > 0 && U < 501) {
auto MaybeScript = GetScript(L);
Assert(MaybeScript.has_value());
Lua& Script = MaybeScript.value();
std::thread t1(CallAsync, &Script, STR, U);
t1.detach();
} else
SendError(L, Sec("CreateThread wrong argument [2] number must be between 1 and 500"));
} else
SendError(L, Sec("CreateThread wrong argument [2] need number"));
} else
SendError(L, Sec("CreateThread wrong argument [1] need string"));
} else
SendError(L, Sec("CreateThread not enough arguments"));
return 0;
}
int lua_Sleep(lua_State* L) {
if (lua_isnumber(L, 1)) {
int t = int(lua_tonumber(L, 1));
std::this_thread::sleep_for(std::chrono::milliseconds(t));
} else {
SendError(L, Sec("Sleep not enough arguments"));
return 0;
}
return 1;
}
Client* GetClient(int ID) {
for (auto& c : CI->Clients) {
if (c != nullptr && c->GetID() == ID) {
return c.get();
}
}
return nullptr;
}
int lua_isConnected(lua_State* L) {
if (lua_isnumber(L, 1)) {
int ID = int(lua_tonumber(L, 1));
Client* c = GetClient(ID);
if (c != nullptr)
lua_pushboolean(L, c->isConnected);
else
return 0;
} else {
SendError(L, Sec("isConnected not enough arguments"));
return 0;
}
return 1;
}
int lua_GetPlayerName(lua_State* L) {
if (lua_isnumber(L, 1)) {
int ID = int(lua_tonumber(L, 1));
Client* c = GetClient(ID);
if (c != nullptr)
lua_pushstring(L, c->GetName().c_str());
else
return 0;
} else {
SendError(L, Sec("GetPlayerName not enough arguments"));
return 0;
}
return 1;
}
int lua_GetPlayerCount(lua_State* L) {
lua_pushinteger(L, CI->Size());
return 1;
}
int lua_GetDID(lua_State* L) {
if (lua_isnumber(L, 1)) {
int ID = int(lua_tonumber(L, 1));
Client* c = GetClient(ID);
if (c != nullptr)
lua_pushstring(L, c->GetDID().c_str());
else
return 0;
} else {
SendError(L, Sec("GetDID not enough arguments"));
return 0;
}
return 1;
}
int lua_GetAllPlayers(lua_State* L) {
lua_newtable(L);
int i = 1;
for (auto& c : CI->Clients) {
if (c == nullptr)
continue;
lua_pushinteger(L, c->GetID());
lua_pushstring(L, c->GetName().c_str());
lua_settable(L, -3);
i++;
}
if (CI->Clients.empty())
return 0;
return 1;
}
int lua_GetCars(lua_State* L) {
if (lua_isnumber(L, 1)) {
int ID = int(lua_tonumber(L, 1));
Client* c = GetClient(ID);
if (c != nullptr) {
int i = 1;
for (VData* v : c->GetAllCars()) {
if (v != nullptr) {
lua_pushinteger(L, v->ID);
lua_pushstring(L, v->Data.substr(3).c_str());
lua_settable(L, -3);
i++;
}
}
if (c->GetAllCars().empty())
return 0;
} else
return 0;
} else {
SendError(L, Sec("GetPlayerVehicles not enough arguments"));
return 0;
}
return 1;
}
int lua_dropPlayer(lua_State* L) {
int Args = lua_gettop(L);
if (lua_isnumber(L, 1)) {
int ID = int(lua_tonumber(L, 1));
Client* c = GetClient(ID);
if (c == nullptr)
return 0;
if (c->GetRole() == Sec("MDEV"))
return 0;
std::string Reason;
if (Args > 1 && lua_isstring(L, 2)) {
Reason = std::string(Sec(" Reason : ")) + lua_tostring(L, 2);
}
Respond(c, "C:Server:You have been Kicked from the server! " + Reason, true);
c->SetStatus(-2);
closesocket(c->GetTCPSock());
} else
SendError(L, Sec("DropPlayer not enough arguments"));
return 0;
}
int lua_sendChat(lua_State* L) {
if (lua_isinteger(L, 1) || lua_isnumber(L, 1)) {
if (lua_isstring(L, 2)) {
int ID = int(lua_tointeger(L, 1));
if (ID == -1) {
std::string Packet = "C:Server: " + std::string(lua_tostring(L, 2));
SendToAll(nullptr, Packet, true, true);
} else {
Client* c = GetClient(ID);
if (c != nullptr) {
if (!c->isSynced)
return 0;
std::string Packet = "C:Server: " + std::string(lua_tostring(L, 2));
Respond(c, Packet, true);
} else
SendError(L, Sec("SendChatMessage invalid argument [1] invalid ID"));
}
} else
SendError(L, Sec("SendChatMessage invalid argument [2] expected string"));
} else
SendError(L, Sec("SendChatMessage invalid argument [1] expected number"));
return 0;
}
int lua_RemoveVehicle(lua_State* L) {
int Args = lua_gettop(L);
if (Args != 2) {
SendError(L, Sec("RemoveVehicle invalid argument count expected 2 got ") + std::to_string(Args));
return 0;
}
if ((lua_isinteger(L, 1) || lua_isnumber(L, 1)) && (lua_isinteger(L, 2) || lua_isnumber(L, 2))) {
int PID = int(lua_tointeger(L, 1));
int VID = int(lua_tointeger(L, 2));
Client* c = GetClient(PID);
if (c == nullptr) {
SendError(L, Sec("RemoveVehicle invalid Player ID"));
return 0;
}
if (c->GetRole() == "MDEV")
return 0;
if (!c->GetCarData(VID).empty()) {
std::string Destroy = "Od:" + std::to_string(PID) + "-" + std::to_string(VID);
SendToAll(nullptr, Destroy, true, true);
c->DeleteCar(VID);
}
} else
SendError(L, Sec("RemoveVehicle invalid argument expected number"));
return 0;
}
int lua_HWID(lua_State* L) {
lua_pushinteger(L, -1);
return 1;
}
int lua_RemoteEvent(lua_State* L) {
int Args = lua_gettop(L);
if (Args != 3) {
SendError(L, Sec("TriggerClientEvent invalid argument count expected 3 got ") + std::to_string(Args));
return 0;
}
if (!lua_isnumber(L, 1)) {
SendError(L, Sec("TriggerClientEvent invalid argument [1] expected number"));
return 0;
}
if (!lua_isstring(L, 2)) {
SendError(L, Sec("TriggerClientEvent invalid argument [2] expected string"));
return 0;
}
if (!lua_isstring(L, 3)) {
SendError(L, Sec("TriggerClientEvent invalid argument [3] expected string"));
return 0;
}
int ID = int(lua_tointeger(L, 1));
std::string Packet = "E:" + std::string(lua_tostring(L, 2)) + ":" + std::string(lua_tostring(L, 3));
if (ID == -1)
SendToAll(nullptr, Packet, true, true);
else {
Client* c = GetClient(ID);
if (c == nullptr) {
SendError(L, Sec("TriggerClientEvent invalid Player ID"));
return 0;
}
Respond(c, Packet, true);
}
return 0;
}
int lua_ServerExit(lua_State*) {
_Exit(0);
}
int lua_Set(lua_State* L) {
int Args = lua_gettop(L);
if (Args != 2) {
SendError(L, Sec("set invalid argument count expected 2 got ") + std::to_string(Args));
return 0;
}
if (!lua_isnumber(L, 1)) {
SendError(L, Sec("set invalid argument [1] expected number"));
return 0;
}
auto MaybeSrc = GetScript(L);
std::string Name;
if (!MaybeSrc.has_value()) {
Name = Sec("_Console");
} else {
Name = MaybeSrc.value().get().GetPluginName();
}
int C = int(lua_tointeger(L, 1));
switch (C) {
case 0: //debug
if (lua_isboolean(L, 2)) {
Debug = lua_toboolean(L, 2);
info(Name + Sec(" | Debug -> ") + (Debug ? "true" : "false"));
} else
SendError(L, Sec("set invalid argument [2] expected boolean for ID : 0"));
break;
case 1: //private
if (lua_isboolean(L, 2)) {
Private = lua_toboolean(L, 2);
info(Name + Sec(" | Private -> ") + (Private ? "true" : "false"));
} else
SendError(L, Sec("set invalid argument [2] expected boolean for ID : 1"));
break;
case 2: //max cars
if (lua_isnumber(L, 2)) {
MaxCars = int(lua_tointeger(L, 2));
info(Name + Sec(" | MaxCars -> ") + std::to_string(MaxCars));
} else
SendError(L, Sec("set invalid argument [2] expected number for ID : 2"));
break;
case 3: //max players
if (lua_isnumber(L, 2)) {
MaxPlayers = int(lua_tointeger(L, 2));
info(Name + Sec(" | MaxPlayers -> ") + std::to_string(MaxPlayers));
} else
SendError(L, Sec("set invalid argument [2] expected number for ID : 3"));
break;
case 4: //Map
if (lua_isstring(L, 2)) {
MapName = lua_tostring(L, 2);
info(Name + Sec(" | MapName -> ") + MapName);
} else
SendError(L, Sec("set invalid argument [2] expected string for ID : 4"));
break;
case 5: //Name
if (lua_isstring(L, 2)) {
ServerName = lua_tostring(L, 2);
info(Name + Sec(" | ServerName -> ") + ServerName);
} else
SendError(L, Sec("set invalid argument [2] expected string for ID : 5"));
break;
case 6: //Desc
if (lua_isstring(L, 2)) {
ServerDesc = lua_tostring(L, 2);
info(Name + Sec(" | ServerDesc -> ") + ServerDesc);
} else
SendError(L, Sec("set invalid argument [2] expected string for ID : 6"));
break;
default:
warn(Sec("Invalid config ID : ") + std::to_string(C));
break;
}
return 0;
}
extern "C" {
int lua_Print(lua_State* L) {
int Arg = lua_gettop(L);
for (int i = 1; i <= Arg; i++) {
ConsoleOut(lua_tostring(L, i) + std::string("\n"));
}
return 0;
}
}
Lua::Lua(const std::string& PluginName, const std::string& FileName, fs::file_time_type LastWrote, bool Console)
: luaState(luaL_newstate()) {
Assert(luaState);
if (!PluginName.empty()) {
SetPluginName(PluginName);
}
if (!FileName.empty()) {
SetFileName(FileName);
}
SetLastWrite(LastWrote);
_Console = Console;
Init();
}
Lua::Lua(bool Console)
: luaState(luaL_newstate()) {
_Console = Console;
Init();
}
void Lua::Execute(const std::string& Command) {
if (ConsoleCheck(luaState, luaL_dostring(luaState, Command.c_str()))) {
lua_settop(luaState, 0);
}
}
void Lua::Reload() {
if (CheckLua(luaState, luaL_dofile(luaState, _FileName.c_str()))) {
CallFunction(this, Sec("onInit"), nullptr);
}
}
std::string Lua::GetOrigin() {
return GetFileName().substr(GetFileName().find('\\'));
}
int CallFunction(Lua* lua, const std::string& FuncName, std::unique_ptr<LuaArg> Arg) {
lua_State* luaState = lua->GetState();
lua_getglobal(luaState, FuncName.c_str());
if (lua_isfunction(luaState, -1)) {
int Size = 0;
if (Arg != nullptr) {
Size = int(Arg->args.size());
Arg->PushArgs(luaState);
}
std::string Origin = lua->GetOrigin();
int R = lua_pcall(luaState, Size, 1, 0);
if (CheckLua(luaState, R)) {
if (lua_isnumber(luaState, -1)) {
return int(lua_tointeger(luaState, -1));
}
}
}
ClearStack(luaState);
return 0;
}
void Lua::SetPluginName(const std::string& Name) {
_PluginName = Name;
}
void Lua::SetFileName(const std::string& Name) {
_FileName = Name;
}
void Lua::Init() {
Assert(luaState);
luaL_openlibs(luaState);
lua_register(luaState, "TriggerGlobalEvent", lua_TriggerEventG);
lua_register(luaState, "TriggerLocalEvent", lua_TriggerEventL);
lua_register(luaState, "TriggerClientEvent", lua_RemoteEvent);
lua_register(luaState, "GetPlayerCount", lua_GetPlayerCount);
lua_register(luaState, "isPlayerConnected", lua_isConnected);
lua_register(luaState, "RegisterEvent", lua_RegisterEvent);
lua_register(luaState, "GetPlayerName", lua_GetPlayerName);
lua_register(luaState, "RemoveVehicle", lua_RemoveVehicle);
lua_register(luaState, "GetPlayerDiscordID", lua_GetDID);
lua_register(luaState, "GetPlayerVehicles", lua_GetCars);
lua_register(luaState, "CreateThread", lua_CreateThread);
lua_register(luaState, "SendChatMessage", lua_sendChat);
lua_register(luaState, "GetPlayers", lua_GetAllPlayers);
lua_register(luaState, "StopThread", lua_StopThread);
lua_register(luaState, "DropPlayer", lua_dropPlayer);
lua_register(luaState, "GetPlayerHWID", lua_HWID);
lua_register(luaState, "exit", lua_ServerExit);
lua_register(luaState, "Sleep", lua_Sleep);
lua_register(luaState, "print", lua_Print);
lua_register(luaState, "Set", lua_Set);
if (!_Console)
Reload();
}
void Lua::RegisterEvent(const std::string& Event, const std::string& FunctionName) {
_RegisteredEvents.insert(std::make_pair(Event, FunctionName));
}
void Lua::UnRegisterEvent(const std::string& Event) {
for (const std::pair<std::string, std::string>& a : _RegisteredEvents) {
if (a.first == Event) {
_RegisteredEvents.erase(a);
break;
}
}
}
bool Lua::IsRegistered(const std::string& Event) {
for (const std::pair<std::string, std::string>& a : _RegisteredEvents) {
if (a.first == Event)
return true;
}
return false;
}
std::string Lua::GetRegistered(const std::string& Event) const {
for (const std::pair<std::string, std::string>& a : _RegisteredEvents) {
if (a.first == Event)
return a.second;
}
return "";
}
std::string Lua::GetFileName() const {
return _FileName;
}
std::string Lua::GetPluginName() const {
return _PluginName;
}
lua_State* Lua::GetState() {
return luaState;
}
const lua_State* Lua::GetState() const {
return luaState;
}
void Lua::SetLastWrite(fs::file_time_type time) {
_LastWrote = time;
}
fs::file_time_type Lua::GetLastWrite() {
return _LastWrote;
}
Lua::~Lua() {
info("closing lua state");
lua_close(luaState);
}