Change to luajit

Decreases the likelyhood of lua stack corruption.

---

By creating this pull request, I understand that code that is AI
generated or otherwise automatically generated may be rejected without
further discussion.
I declare that I fully understand all code I pushed into this PR, and
wrote all this code myself and own the rights to this code.

.github/workflows/linux.yml

@@ -19,8 +19,6 @@ jobs:
     strategy:
       matrix:
         include:
-          - distro: debian
-            version: 11
           - distro: debian
             version: 12
           - distro: ubuntu
@@ -48,6 +46,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: 'recursive'
+          fetch-depth: 0
 
       - name: Git config safe directory
         shell: bash
@@ -90,8 +89,6 @@ jobs:
     strategy:
       matrix:
         include:
-          - distro: debian
-            version: 11
           - distro: debian
             version: 12
           - distro: ubuntu
@@ -119,6 +116,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: 'recursive'
+          fetch-depth: 0
 
       - name: Git config safe directory
         shell: bash

.github/workflows/release.yml

@@ -38,8 +38,6 @@ jobs:
     strategy:
       matrix:
         include:
-          - distro: debian
-            version: 11
           - distro: debian
             version: 12
           - distro: ubuntu
@@ -67,6 +65,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: 'recursive'
+          fetch-depth: 0
 
       - name: Git config safe directory
         shell: bash
@@ -109,8 +108,6 @@ jobs:
     strategy:
       matrix:
         include:
-          - distro: debian
-            version: 11
           - distro: debian
             version: 12
           - distro: ubuntu
@@ -141,6 +138,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: 'recursive'
+          fetch-depth: 0
 
       - name: Git config safe directory
         shell: bash
@@ -194,6 +192,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: 'recursive'
+          fetch-depth: 0
 
       - name: Create Build Environment
         shell: bash

.github/workflows/windows.yml

@@ -26,6 +26,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: 'recursive'
+          fetch-depth: 0
 
       - name: Setup vcpkg
         uses: lukka/run-vcpkg@v11

CMakeLists.txt

@@ -80,14 +80,15 @@ set(PRJ_SOURCES
     src/ChronoWrapper.cpp
 )
 
-find_package(Lua REQUIRED)
+# fix for sol2
+find_path(LUAJIT_INCLUDE_DIR lua.hpp PATH_SUFFIXES luajit)
 
 # set the source file containing main()
 set(PRJ_MAIN src/main.cpp)
 # set the source file containing the test's main
 set(PRJ_TEST_MAIN test/test_main.cpp)
 # set include paths not part of libraries
-set(PRJ_INCLUDE_DIRS ${LUA_INCLUDE_DIR})
+set(PRJ_INCLUDE_DIRS ${LUAJIT_INCLUDE_DIR})
 # set compile features (e.g. standard version)
 set(PRJ_COMPILE_FEATURES cxx_std_20)
 # set #defines (test enable/disable not included here)
@@ -105,9 +106,11 @@ set(PRJ_LIBRARIES
     libzip::zip
     OpenSSL::SSL OpenSSL::Crypto
     CURL::libcurl
-    ${LUA_LIBRARIES}
+    lua51
 )
 
+link_directories(${VCPKG_INSTALLED_DIR}/${VCPKG_TARGET_TRIPLET}/lib)
+
 # add dependency find_package calls and similar here
 find_package(fmt CONFIG REQUIRED)
 find_package(OpenSSL REQUIRED)
@@ -148,7 +151,8 @@ if(UNIX)
 endif(UNIX)
 
 if (WIN32)
-    add_compile_options("-D_WIN32_WINNT=0x0601")
+    add_compile_definitions(_WIN32_WINNT=0x0A00)
+
     add_compile_options("/bigobj")
 endif(WIN32)
 

include/Client.h

@@ -24,6 +24,7 @@
 #include <queue>
 #include <string>
 #include <unordered_set>
+#include <utility>
 
 #include "BoostAliases.h"
 #include "Common.h"
@@ -56,14 +57,14 @@ public:
     ~TClient();
     TClient& operator=(const TClient&) = delete;
 
-    void AddNewCar(int Ident, const std::string& Data);
+    void AddNewCar(int Ident, const nlohmann::json& Data);
-    void SetCarData(int Ident, const std::string& Data);
+    void SetCarData(int Ident, const nlohmann::json& Data);
     void SetCarPosition(int Ident, const std::string& Data);
     TVehicleDataLockPair GetAllCars();
     void SetName(const std::string& Name) { mName = Name; }
     void SetRoles(const std::string& Role) { mRole = Role; }
     void SetIdentifier(const std::string& key, const std::string& value) { mIdentifiers[key] = value; }
-    std::string GetCarData(int Ident);
+    nlohmann::json GetCarData(int Ident);
     std::string GetCarPositionRaw(int Ident);
     void SetUDPAddr(const ip::udp::endpoint& Addr) { mUDPAddress = Addr; }
     void SetTCPSock(ip::tcp::socket&& CSock) { mSocket = std::move(CSock); }
@@ -101,6 +102,8 @@ public:
     [[nodiscard]] TServer& Server() const;
     void UpdatePingTime();
     int SecondsSinceLastPing();
+    void SetMagic(std::vector<uint8_t> magic) { mMagic = std::move(magic); }
+    [[nodiscard]] const std::vector<uint8_t>& GetMagic() const { return mMagic; }
 
 private:
     void InsertVehicle(int ID, const std::string& Data);
@@ -125,6 +128,7 @@ private:
     std::string mDID;
     int mID = -1;
     std::chrono::time_point<std::chrono::high_resolution_clock> mLastPingTime = std::chrono::high_resolution_clock::now();
+    std::vector<uint8_t> mMagic;
 };
 
 std::optional<std::weak_ptr<TClient>> GetClient(class TServer& Server, int ID);

include/Common.h

@@ -74,7 +74,7 @@ public:
     static TConsole& Console() { return mConsole; }
     static std::string ServerVersionString();
     static const Version& ServerVersion() { return mVersion; }
-    static Version ClientMinimumVersion() { return Version { 2, 2, 0 }; }
+    static Version ClientMinimumVersion() { return Version { 2, 7, 0 }; }
     static std::string PPS() { return mPPS; }
     static void SetPPS(const std::string& NewPPS) { mPPS = NewPPS; }
 
@@ -86,6 +86,8 @@ public:
         };
     }
 
+    static std::string GetServerCheckUrl() { return "https://check.beammp.com"; }
+
     static std::string GetBackendUrlForAuth() { return "https://auth.beammp.com"; }
     static std::string GetBackendUrlForSocketIO() { return "https://backend.beammp.com"; }
     static void CheckForUpdates();
@@ -127,7 +129,7 @@ private:
     static inline std::mutex mShutdownHandlersMutex {};
     static inline std::deque<TShutdownHandler> mShutdownHandlers {};
 
-    static inline Version mVersion { 3, 8, 4 };
+    static inline Version mVersion { 3, 9, 0 };
 };
 
 void SplitString(std::string const& str, const char delim, std::vector<std::string>& out);

include/LuaAPI.h

@@ -36,6 +36,7 @@ namespace MP {
     std::pair<bool, std::string> DropPlayer(int ID, std::optional<std::string> MaybeReason);
     std::pair<bool, std::string> SendChatMessage(int ID, const std::string& Message);
     std::pair<bool, std::string> SendNotification(int ID, const std::string& Message, const std::string& Icon, const std::string& Category);
+    std::pair<bool, std::string> ConfirmationDialog(int ID, const std::string& Title, const std::string& Body, const sol::table& buttons, const std::string& InteractionID, const bool& warning = false, const bool& reportToServer = true, const bool& reportToExtensions = true);
     std::pair<bool, std::string> RemoveVehicle(int PlayerID, int VehicleID);
     void Set(int ConfigID, sol::object NewValue);
     TLuaValue Get(int ConfigID);

include/TConsole.h

@@ -61,6 +61,7 @@ private:
     void Command_Version(const std::string& cmd, const std::vector<std::string>& args);
     void Command_ProtectMod(const std::string& cmd, const std::vector<std::string>& args);
     void Command_ReloadMods(const std::string& cmd, const std::vector<std::string>& args);
+    void Command_NetTest(const std::string& cmd, const std::vector<std::string>& args);
 
     void Command_Say(const std::string& FullCommand);
     bool EnsureArgsCount(const std::vector<std::string>& args, size_t n);
@@ -81,6 +82,7 @@ private:
         { "version", [this](const auto& a, const auto& b) { Command_Version(a, b); } },
         { "protectmod", [this](const auto& a, const auto& b) { Command_ProtectMod(a, b); } },
         { "reloadmods", [this](const auto& a, const auto& b) { Command_ReloadMods(a, b); } },
+        { "nettest", [this](const auto& a, const auto& b) { Command_NetTest(a, b); } },
     };
 
     std::unique_ptr<Commandline> mCommandline { nullptr };

include/TLuaEngine.h

@@ -192,9 +192,7 @@ public:
         for (const auto& Event : mLuaEvents.at(EventName)) {
             for (const auto& Function : Event.second) {
                 if (Event.first != IgnoreId) {
-                    auto Result = EnqueueFunctionCall(Event.first, Function, Arguments, EventName);
+                    Results.push_back(EnqueueFunctionCall(Event.first, Function, Arguments, EventName));
-                    Results.push_back(Result);
-                    AddResultToCheck(Result);
                 }
             }
         }

include/TServer.h

@@ -44,7 +44,7 @@ public:
     void ForEachClient(const std::function<bool(std::weak_ptr<TClient>)>& Fn);
     size_t ClientCount() const;
 
-    void GlobalParser(const std::weak_ptr<TClient>& Client, std::vector<uint8_t>&& Packet, TPPSMonitor& PPSMonitor, TNetwork& Network);
+    void GlobalParser(const std::weak_ptr<TClient>& Client, std::vector<uint8_t>&& Packet, TPPSMonitor& PPSMonitor, TNetwork& Network, bool udp);
     static void HandleEvent(TClient& c, const std::string& Data);
     RWMutex& GetClientMutex() const { return mClientsMutex; }
 

include/VehicleData.h

@@ -18,11 +18,12 @@
 
 #pragma once
 
+#include <nlohmann/json.hpp>
 #include <string>
 
 class TVehicleData final {
 public:
-    TVehicleData(int ID, std::string Data);
+    TVehicleData(int ID, nlohmann::json Data);
     ~TVehicleData();
     // We cannot delete this, since vector needs to be able to copy when it resizes.
     // Deleting this causes some wacky template errors which are hard to decipher,
@@ -32,14 +33,16 @@ public:
     [[nodiscard]] bool IsInvalid() const { return mID == -1; }
     [[nodiscard]] int ID() const { return mID; }
 
-    [[nodiscard]] std::string Data() const { return mData; }
+    [[nodiscard]] nlohmann::json Data() const { return mData; }
-    void SetData(const std::string& Data) { mData = Data; }
+    [[nodiscard]] std::string DataAsPacket(const std::string& Role, const std::string& Name, int ID) const;
+
+    void SetData(const nlohmann::json& Data) { mData = Data; }
 
     bool operator==(const TVehicleData& v) const { return mID == v.mID; }
 
 private:
     int mID { -1 };
-    std::string mData;
+    nlohmann::json mData;
 };
 
 // TODO: unused now, remove?

src/Client.cpp

@@ -57,7 +57,7 @@ int TClient::GetOpenCarID() const {
     return OpenID;
 }
 
-void TClient::AddNewCar(int Ident, const std::string& Data) {
+void TClient::AddNewCar(int Ident, const nlohmann::json& Data) {
     std::unique_lock lock(mVehicleDataMutex);
     mVehicleData.emplace_back(Ident, Data);
 }
@@ -98,7 +98,7 @@ void TClient::SetCarPosition(int Ident, const std::string& Data) {
     mVehiclePosition[size_t(Ident)] = Data;
 }
 
-std::string TClient::GetCarData(int Ident) {
+nlohmann::json TClient::GetCarData(int Ident) {
     { // lock
         std::unique_lock lock(mVehicleDataMutex);
         for (auto& v : mVehicleData) {
@@ -108,10 +108,10 @@ std::string TClient::GetCarData(int Ident) {
         }
     } // unlock
     DeleteCar(Ident);
-    return "";
+    return nlohmann::detail::value_t::null;
 }
 
-void TClient::SetCarData(int Ident, const std::string& Data) {
+void TClient::SetCarData(int Ident, const nlohmann::json& Data) {
     { // lock
         std::unique_lock lock(mVehicleDataMutex);
         for (auto& v : mVehicleData) {

src/LuaAPI.cpp

@@ -241,6 +241,48 @@ std::pair<bool, std::string> LuaAPI::MP::SendNotification(int ID, const std::str
     return Result;
 }
 
+std::pair<bool, std::string> LuaAPI::MP::ConfirmationDialog(int ID, const std::string& Title, const std::string& Body, const sol::table& buttons, const std::string& InteractionID, const bool& warning, const bool& reportToServer, const bool& reportToExtensions) {
+    std::pair<bool, std::string> Result;
+
+    const nlohmann::json PacketBody = {
+        { "title", Title },
+        { "body", Body },
+        { "buttons", nlohmann::json::parse(JsonEncode(buttons), nullptr, false) },
+        { "interactionID", InteractionID },
+        { "class", warning ? "experimental" : "" },
+        { "reportToServer", reportToServer },
+        { "reportToExtensions", reportToExtensions }
+    };
+
+    std::string Packet = "D" + PacketBody.dump();
+    if (ID == -1) {
+        Engine->Network().SendToAll(nullptr, StringToVector(Packet), true, true);
+        Result.first = true;
+    } else {
+        auto MaybeClient = GetClient(Engine->Server(), ID);
+        if (MaybeClient) {
+            auto c = MaybeClient.value().lock();
+            if (!c->IsSynced()) {
+                Result.first = false;
+                Result.second = "Player is not synced yet";
+                return Result;
+            }
+            if (!Engine->Network().Respond(*c, StringToVector(Packet), true)) {
+                beammp_errorf("Failed to send confirmation dialog to player (id {}) - did the player disconnect?", ID);
+                Result.first = false;
+                Result.second = "Failed to send packet";
+            }
+            Result.first = true;
+        } else {
+            beammp_lua_error("ConfirmationDialog invalid argument [1] invalid ID");
+            Result.first = false;
+            Result.second = "Invalid Player ID";
+        }
+        return Result;
+    }
+    return Result;
+}
+
 std::pair<bool, std::string> LuaAPI::MP::RemoveVehicle(int PID, int VID) {
     std::pair<bool, std::string> Result;
     auto MaybeClient = GetClient(Engine->Server(), PID);
@@ -251,7 +293,7 @@ std::pair<bool, std::string> LuaAPI::MP::RemoveVehicle(int PID, int VID) {
         return Result;
     }
     auto c = MaybeClient.value().lock();
-    if (!c->GetCarData(VID).empty()) {
+    if (c->GetCarData(VID) != nlohmann::detail::value_t::null) {
         std::string Destroy = "Od:" + std::to_string(PID) + "-" + std::to_string(VID);
         LuaAPI::MP::Engine->ReportErrors(LuaAPI::MP::Engine->TriggerEvent("onVehicleDeleted", "", PID, VID));
         Engine->Network().SendToAll(nullptr, StringToVector(Destroy), true, true);

src/TConsole.cpp

@@ -24,6 +24,7 @@
 #include "CustomAssert.h"
 #include "LuaAPI.h"
 #include "TLuaEngine.h"
+#include "Http.h"
 
 #include <ctime>
 #include <lua.hpp>
@@ -159,7 +160,7 @@ void TConsole::ChangeToRegularConsole() {
 }
 
 bool TConsole::EnsureArgsCount(const std::vector<std::string>& args, size_t n) {
-    if (n == 0 && args.size() != 0) {
+    if (n == 0 && !args.empty()) {
         Application::Console().WriteRaw("This command expects no arguments.");
         return false;
     } else if (args.size() != n) {
@@ -197,7 +198,7 @@ void TConsole::Command_Lua(const std::string&, const std::vector<std::string>& a
         } else {
             Application::Console().WriteRaw("Lua state '" + NewStateId + "' is not a known state. Didn't switch to Lua.");
         }
-    } else if (args.size() == 0) {
+    } else if (args.empty()) {
         ChangeToLuaConsole(mDefaultStateId);
     }
 }
@@ -259,8 +260,7 @@ void TConsole::Command_Version(const std::string& cmd, const std::vector<std::st
 
     Application::Console().WriteRaw("Platform: " + platform);
     Application::Console().WriteRaw("Server:   v" + Application::ServerVersionString());
-    std::string lua_version = fmt::format("Lua:      v{}.{}.{}", LUA_VERSION_MAJOR, LUA_VERSION_MINOR, LUA_VERSION_RELEASE);
+    Application::Console().WriteRaw(LUA_RELEASE);
-    Application::Console().WriteRaw(lua_version);
     std::string openssl_version = fmt::format("OpenSSL:  v{}.{}.{}", OPENSSL_VERSION_MAJOR, OPENSSL_VERSION_MINOR, OPENSSL_VERSION_PATCH);
     Application::Console().WriteRaw(openssl_version);
 }
@@ -291,6 +291,30 @@ void TConsole::Command_ReloadMods(const std::string& cmd, const std::vector<std:
     Application::Console().WriteRaw("Mods reloaded.");
 }
 
+void TConsole::Command_NetTest(const std::string& cmd, const std::vector<std::string>& args) {
+    unsigned int status = 0;
+
+    std::string T = Http::GET(
+    Application::GetServerCheckUrl() + "/api/v2/beammp/" + std::to_string(Application::Settings.getAsInt(Settings::Key::General_Port)), &status
+        );
+
+    beammp_debugf("Status and response from Server Check API: {0}, {1}", status, T);
+
+    auto Doc = nlohmann::json::parse(T, nullptr, false);
+
+    if (Doc.is_discarded() || !Doc.is_object()) {
+        beammp_warn("Failed to parse Server Check API response, however the server will most likely still work correctly.");
+    } else {
+        std::string status = Doc["status"];
+        std::string details = "Response from Server Check API: " + std::string(Doc["details"]);
+        if (status == "ok") {
+            beammp_info(details);
+        } else {
+            beammp_warn(details);
+        }
+    }
+}
+
 void TConsole::Command_Kick(const std::string&, const std::vector<std::string>& args) {
     if (!EnsureArgsCount(args, 1, size_t(-1))) {
         return;
@@ -398,7 +422,7 @@ void TConsole::Command_Settings(const std::string&, const std::vector<std::strin
         settings set <category> <setting> <value>   sets specified setting to value
         )";
 
-    if (args.size() == 0) {
+    if (args.empty()) {
         beammp_errorf("No arguments specified for command 'settings'!");
         Application::Console().WriteRaw("BeamMP-Server Console: " + std::string(sHelpString));
         return;
@@ -680,7 +704,7 @@ void TConsole::RunAsCommand(const std::string& cmd, bool IgnoreNotACommand) {
             }
         }
     }
-    if (NonNilFutures.size() == 0) {
+    if (NonNilFutures.empty()) {
         if (!IgnoreNotACommand) {
             Application::Console().WriteRaw("Error: Unknown command: '" + cmd + "'. Type 'help' to see a list of valid commands.");
         }

src/TLuaEngine.cpp

@@ -30,16 +30,12 @@
 #include <condition_variable>
 #include <fmt/core.h>
 #include <nlohmann/json.hpp>
-#include <optional>
 #include <random>
-#include <sol/stack_core.hpp>
 #include <thread>
 #include <tuple>
 
 TLuaEngine* LuaAPI::MP::Engine;
 
-static sol::protected_function AddTraceback(sol::state_view StateView, sol::protected_function RawFn);
-
 TLuaEngine::TLuaEngine()
     : mResourceServerPath(fs::path(Application::Settings.getAsString(Settings::Key::General_ResourceFolder)) / "Server") {
     Application::SetSubsystemStatus("LuaEngine", Application::Status::Starting);
@@ -69,7 +65,7 @@ TEST_CASE("TLuaEngine ctor & dtor") {
 void TLuaEngine::operator()() {
     RegisterThread("LuaEngine");
     // lua engine main thread
-    beammp_infof("Lua v{}.{}.{}", LUA_VERSION_MAJOR, LUA_VERSION_MINOR, LUA_VERSION_RELEASE);
+    beammp_infof(LUA_RELEASE);
     CollectAndInitPlugins();
 
     Application::SetSubsystemStatus("LuaEngine", Application::Status::Good);
@@ -131,7 +127,7 @@ void TLuaEngine::operator()() {
                 }
             }
         }
-        if (mLuaStates.size() == 0) {
+        if (mLuaStates.empty()) {
             beammp_trace("No Lua states, event loop running extremely sparsely");
             Application::SleepSafeSeconds(10);
         } else {
@@ -496,7 +492,6 @@ sol::table TLuaEngine::StateThreadData::Lua_TriggerGlobalEvent(const std::string
     sol::variadic_results LocalArgs = JsonStringToArray(Str);
     for (const auto& Handler : MyHandlers) {
         auto Fn = mStateView[Handler];
-        Fn = AddTraceback(mStateView, Fn);
         if (Fn.valid()) {
             auto LuaResult = Fn(LocalArgs);
             auto Result = std::make_shared<TLuaResult>();
@@ -505,9 +500,7 @@ sol::table TLuaEngine::StateThreadData::Lua_TriggerGlobalEvent(const std::string
                 Result->Result = LuaResult;
             } else {
                 Result->Error = true;
-                sol::error Err = LuaResult;
+                Result->ErrorMessage = "Function result in TriggerGlobalEvent was invalid";
-                Result->ErrorMessage = Err.what();
-                beammp_errorf("An error occured while executing local event handler \"{}\" for event \"{}\": {}", Handler, EventName, Result->ErrorMessage);
             }
             Result->MarkAsReady();
             Return.push_back(Result);
@@ -668,7 +661,7 @@ sol::table TLuaEngine::StateThreadData::Lua_GetPlayerVehicles(int ID) {
         sol::state_view StateView(mState);
         sol::table Result = StateView.create_table();
         for (const auto& v : VehicleData) {
-            Result[v.ID()] = v.Data().substr(3);
+            Result[v.ID()] = v.DataAsPacket(Client->GetRoles(), Client->GetName(), Client->GetID()).substr(3);
         }
         return Result;
     } else
@@ -876,6 +869,12 @@ TLuaEngine::StateThreadData::StateThreadData(const std::string& Name, TLuaStateI
             beammp_lua_error("SendNotification expects 2, 3 or 4 arguments.");
         }
     });
+    MPTable.set_function("ConfirmationDialog", sol::overload(
+        &LuaAPI::MP::ConfirmationDialog,
+        [&](const int& ID, const std::string& Title, const std::string& Body, const sol::table& Buttons, const std::string& InteractionID) {
+            LuaAPI::MP::ConfirmationDialog(ID, Title, Body, Buttons, InteractionID);
+        }
+    ));
     MPTable.set_function("GetPlayers", [&]() -> sol::table {
         return Lua_GetPlayers();
     });
@@ -1083,21 +1082,6 @@ void TLuaEngine::StateThreadData::RegisterEvent(const std::string& EventName, co
     mEngine->RegisterEvent(EventName, mStateId, FunctionName);
 }
 
-static sol::protected_function AddTraceback(sol::state_view StateView, sol::protected_function RawFn) {
-    StateView["INTERNAL_ERROR_HANDLER"] = [](lua_State *L) {
-        auto Error = sol::stack::get<std::optional<std::string>>(L);
-        std::string ErrorString = "<Unknown error>";
-        if (Error.has_value()) {
-            ErrorString = Error.value();
-        }
-        auto DebugTracebackFn = sol::state_view(L).globals().get<sol::table>("debug").get<sol::protected_function>("traceback");
-        // 2 = start collecting the trace one above the current function (1=current function)
-        std::string Traceback = DebugTracebackFn(ErrorString, 2);
-        return sol::stack::push(L, Traceback);
-    };
-    return sol::protected_function(RawFn, StateView["INTERNAL_ERROR_HANDLER"]);
-}
-
 void TLuaEngine::StateThreadData::operator()() {
     RegisterThread("Lua:" + mStateId);
     while (!Application::IsShuttingDown()) {
@@ -1162,8 +1146,8 @@ void TLuaEngine::StateThreadData::operator()() {
                 // TODO: Use TheQueuedFunction.EventName for errors, warnings, etc
                 Result->StateId = mStateId;
                 sol::state_view StateView(mState);
-                auto RawFn = StateView[FnName];
+                auto Fn = StateView[FnName];
-                if (RawFn.valid() && RawFn.get_type() == sol::type::function) {
+                if (Fn.valid() && Fn.get_type() == sol::type::function) {
                     std::vector<sol::object> LuaArgs;
                     for (const auto& Arg : Args) {
                         if (Arg.valueless_by_exception()) {
@@ -1198,7 +1182,6 @@ void TLuaEngine::StateThreadData::operator()() {
                             break;
                         }
                     }
-                    auto Fn = AddTraceback(StateView, RawFn);
                     auto Res = Fn(sol::as_args(LuaArgs));
                     if (Res.valid()) {
                         Result->Error = false;

src/TNetwork.cpp

@@ -32,6 +32,8 @@
 #include <boost/asio/ip/address_v6.hpp>
 #include <boost/asio/ip/v6_only.hpp>
 #include <cstring>
+#include <openssl/err.h>
+#include <openssl/rand.h>
 #include <zlib.h>
 
 typedef boost::asio::detail::socket_option::integer<SOL_SOCKET, SO_RCVTIMEO> rcv_timeout_option;
@@ -146,23 +148,30 @@ void TNetwork::UDPServerMain() {
                 }
 
                 if (Client->GetID() == ID) {
-                    // not initialized yet
+                    if (Client->GetUDPAddr() == ip::udp::endpoint {} && !Client->IsUDPConnected() && !Client->GetMagic().empty()) {
-                    if (Client->GetUDPAddr() == ip::udp::endpoint {} || !Client->IsUDPConnected()) {
+                        if (Data.size() != 66) {
-                        // same IP (just a sanity check)
+                            beammp_debugf("Invalid size for UDP value. IP: {} ID: {}", remote_client_ep.address().to_string(), ID);
-                        if (remote_client_ep.address() == Client->GetTCPSock().remote_endpoint().address()) {
-                            Client->SetUDPAddr(remote_client_ep);
-                            Client->SetIsUDPConnected(true);
-                            beammp_debugf("UDP connected for client {}", ID);
-                        } else {
-                            beammp_debugf("Denied initial UDP packet due to IP mismatch");
                             return false;
                         }
+
+                        const std::vector Magic(Data.begin() + 2, Data.end());
+
+                        if (Magic != Client->GetMagic()) {
+                            beammp_debugf("Invalid value for UDP IP: {} ID: {}", remote_client_ep.address().to_string(), ID);
+                            return false;
+                        }
+
+                        Client->SetMagic({});
+                        Client->SetUDPAddr(remote_client_ep);
+                        Client->SetIsUDPConnected(true);
+                        return false;
                     }
+
                     if (Client->GetUDPAddr() == remote_client_ep) {
                         Data.erase(Data.begin(), Data.begin() + 2);
-                        mServer.GlobalParser(ClientPtr, std::move(Data), mPPSMonitor, *this);
+                        mServer.GlobalParser(ClientPtr, std::move(Data), mPPSMonitor, *this, true);
                     } else {
-                        beammp_debugf("Ignored UDP packet due to remote address mismatch");
+                        beammp_debugf("Ignored UDP packet for Client {} due to remote address mismatch. Source: {}, Client: {}", ID, remote_client_ep.address().to_string(), Client->GetUDPAddr().address().to_string());
                         return false;
                     }
                 }
@@ -234,10 +243,11 @@ void TNetwork::TCPServerMain() {
             ip::tcp::socket ClientSocket = Acceptor.accept(ClientEp, ec);
             if (ec) {
                 beammp_errorf("Failed to accept() new client: {}", ec.message());
+                continue;
             }
             TConnection Conn { std::move(ClientSocket), ClientEp };
             std::thread ID(&TNetwork::Identify, this, std::move(Conn));
-            ID.detach(); // TODO: Add to a queue and attempt to join periodically
+            ID.detach();
         } catch (const std::exception& e) {
             beammp_errorf("Exception in accept routine: {}", e.what());
         }
@@ -660,7 +670,7 @@ void TNetwork::TCPClient(const std::weak_ptr<TClient>& c) {
             Client->Disconnect("TCPRcv failed");
             break;
         }
-        mServer.GlobalParser(c, std::move(res), mPPSMonitor, *this);
+        mServer.GlobalParser(c, std::move(res), mPPSMonitor, *this, false);
     }
 
     if (QueueSync.joinable())
@@ -751,6 +761,18 @@ void TNetwork::OnConnect(const std::weak_ptr<TClient>& c) {
     SyncResources(*LockedClient);
     if (LockedClient->IsDisconnected())
         return;
+    std::vector<unsigned char> buf(64);
+    int ret = RAND_bytes(buf.data(), buf.size());
+    if (ret != 1) {
+        unsigned long error = ERR_get_error();
+        beammp_errorf("RAND_bytes failed with error code {}", error);
+        beammp_assert(ret != 1);
+        return;
+    }
+
+    LockedClient->SetMagic(buf);
+    buf.insert(buf.begin(), 'U');
+    (void)Respond(*LockedClient, buf, true);
     (void)Respond(*LockedClient, StringToVector("M" + Application::Settings.getAsString(Settings::Key::General_Map)), true); // Send the Map on connect
     beammp_info(LockedClient->GetName() + " : Connected");
     LuaAPI::MP::Engine->ReportErrors(LuaAPI::MP::Engine->TriggerEvent("onPlayerJoining", "", LockedClient->GetID()));
@@ -974,7 +996,7 @@ bool TNetwork::SyncClient(const std::weak_ptr<TClient>& c) {
                     res = false;
                     return false;
                 }
-                res = Respond(*LockedClient, StringToVector(v.Data()), true, true);
+                res = Respond(*LockedClient, StringToVector(v.DataAsPacket(client->GetRoles(), client->GetName(), client->GetID())), true, true);
             }
         }
 

src/TServer.cpp

@@ -161,7 +161,7 @@ size_t TServer::ClientCount() const {
     return mClients.size();
 }
 
-void TServer::GlobalParser(const std::weak_ptr<TClient>& Client, std::vector<uint8_t>&& Packet, TPPSMonitor& PPSMonitor, TNetwork& Network) {
+void TServer::GlobalParser(const std::weak_ptr<TClient>& Client, std::vector<uint8_t>&& Packet, TPPSMonitor& PPSMonitor, TNetwork& Network, bool udp) {
     constexpr std::string_view ABG = "ABG:";
     if (Packet.size() >= ABG.size() && std::equal(Packet.begin(), Packet.begin() + ABG.size(), ABG.begin(), ABG.end())) {
         Packet.erase(Packet.begin(), Packet.begin() + ABG.size());
@@ -195,12 +195,29 @@ void TServer::GlobalParser(const std::weak_ptr<TClient>& Client, std::vector<uin
 
     // V to Y
     if (Code <= 89 && Code >= 86) {
+        int PID = -1;
+        int VID = -1;
+
+        auto pidVidPart = StringPacket.substr(3);
+        auto MaybePidVid = GetPidVid(pidVidPart.substr(0, pidVidPart.find(':')));
+        if (MaybePidVid) {
+            std::tie(PID, VID) = MaybePidVid.value();
+        }
+
+        if (PID == -1 || VID == -1 || PID != LockedClient->GetID()) {
+            return;
+        }
+
         PPSMonitor.IncrementInternalPPS();
         Network.SendToAll(LockedClient.get(), Packet, false, false);
         return;
     }
     switch (Code) {
     case 'H': // initial connection
+        if (udp) {
+            beammp_debugf("Received 'H' packet over UDP from client '{}' ({}), ignoring it", LockedClient->GetName(), LockedClient->GetID());
+            return;
+        }
         if (!Network.SyncClient(Client)) {
             // TODO handle
         }
@@ -214,12 +231,20 @@ void TServer::GlobalParser(const std::weak_ptr<TClient>& Client, std::vector<uin
         }
         return;
     case 'O':
+        if (udp) {
+            beammp_debugf("Received 'O' packet over UDP from client '{}' ({}), ignoring it", LockedClient->GetName(), LockedClient->GetID());
+            return;
+        }
         if (Packet.size() > 1000) {
             beammp_debug(("Received data from: ") + LockedClient->GetName() + (" Size: ") + std::to_string(Packet.size()));
         }
         ParseVehicle(*LockedClient, StringPacket, Network);
         return;
     case 'C': {
+        if (udp) {
+            beammp_debugf("Received 'C' packet over UDP from client '{}' ({}), ignoring it", LockedClient->GetName(), LockedClient->GetID());
+            return;
+        }
         if (Packet.size() < 4 || std::find(Packet.begin() + 3, Packet.end(), ':') == Packet.end())
             break;
         const auto PacketAsString = std::string(reinterpret_cast<const char*>(Packet.data()), Packet.size());
@@ -232,6 +257,10 @@ void TServer::GlobalParser(const std::weak_ptr<TClient>& Client, std::vector<uin
             beammp_debugf("Empty chat message received from '{}' ({}), ignoring it", LockedClient->GetName(), LockedClient->GetID());
             return;
         }
+        if (Message.size() > 500) {
+           beammp_debugf("Chat message too long from '{}' ({}), ignoring it", LockedClient->GetName(), LockedClient->GetID());
+           return;
+        }
         auto Futures = LuaAPI::MP::Engine->TriggerEvent("onChatMessage", "", LockedClient->GetID(), LockedClient->GetName(), Message);
         TLuaEngine::WaitForAll(Futures);
         LogChatMessage(LockedClient->GetName(), LockedClient->GetID(), PacketAsString.substr(PacketAsString.find(':', 3) + 1));
@@ -250,16 +279,35 @@ void TServer::GlobalParser(const std::weak_ptr<TClient>& Client, std::vector<uin
         return;
     }
     case 'E':
+        if (udp) {
+            beammp_debugf("Received 'E' packet over UDP from client '{}' ({}), ignoring it", LockedClient->GetName(), LockedClient->GetID());
+            return;
+        }
         HandleEvent(*LockedClient, StringPacket);
         return;
     case 'N':
         Network.SendToAll(LockedClient.get(), Packet, false, true);
         return;
-    case 'Z': // position packet
+    case 'Z': { // position packet
         PPSMonitor.IncrementInternalPPS();
+
+        int PID = -1;
+        int VID = -1;
+
+        auto pidVidPart = StringPacket.substr(3);
+        auto MaybePidVid = GetPidVid(pidVidPart.substr(0, pidVidPart.find(':')));
+        if (MaybePidVid) {
+            std::tie(PID, VID) = MaybePidVid.value();
+        }
+
+        if (PID == -1 || VID == -1 || PID != LockedClient->GetID()) {
+            return;
+        }
+
         Network.SendToAll(LockedClient.get(), Packet, false, false);
         HandlePosition(*LockedClient, StringPacket);
         return;
+    }
     default:
         return;
     }
@@ -278,6 +326,15 @@ void TServer::HandleEvent(TClient& c, const std::string& RawData) {
     }
     std::string Name = RawData.substr(2, NameDataSep - 2);
     std::string Data = RawData.substr(NameDataSep + 1);
+
+    std::vector<std::string> exclude = {"onInit", "onFileChanged","onVehicleDeleted","onConsoleInput","onPlayerAuth","postPlayerAuth", "onPlayerDisconnect",
+    "onPlayerConnecting","onPlayerJoining","onPlayerJoin","onChatMessage","postChatMessage","onVehicleSpawn","postVehicleSpawn","onVehicleEdited", "postVehicleEdited",
+    "onVehicleReset","onVehiclePaintChanged","onShutdown"};
+
+    if (std::ranges::find(exclude, Name) != exclude.end()) {
+        beammp_debugf("Excluded event triggered by client '{}' ({}): '{}', ignoring.", c.GetName(), c.GetID(), Name);
+        return;
+    }
     LuaAPI::MP::Engine->ReportErrors(LuaAPI::MP::Engine->TriggerEvent(Name, "", c.GetID(), Data));
 }
 
@@ -328,8 +385,9 @@ void TServer::ParseVehicle(TClient& c, const std::string& Pckt, TNetwork& Networ
                 });
 
             bool SpawnConfirmed = false;
-            if (ShouldSpawn(c, CarJson, CarID) && !ShouldntSpawn) {
+            auto CarJsonDoc = nlohmann::json::parse(CarJson, nullptr, false);
-                c.AddNewCar(CarID, Packet);
+            if (ShouldSpawn(c, CarJson, CarID) && !ShouldntSpawn && !CarJsonDoc.is_discarded()) {
+                c.AddNewCar(CarID, CarJsonDoc);
                 Network.SendToAll(nullptr, StringToVector(Packet), true, true);
                 SpawnConfirmed = true;
             } else {
@@ -446,6 +504,17 @@ void TServer::ParseVehicle(TClient& c, const std::string& Pckt, TNetwork& Networ
             Data = Data.substr(Data.find('['));
             LuaAPI::MP::Engine->ReportErrors(LuaAPI::MP::Engine->TriggerEvent("onVehiclePaintChanged", "", c.GetID(), VID, Data));
             Network.SendToAll(&c, StringToVector(Packet), false, true);
+
+            auto CarData = c.GetCarData(VID);
+            if (CarData == nlohmann::detail::value_t::null)
+                return;
+
+            if (CarData.contains("vcf") && CarData.at("vcf").is_object())
+                if (CarData.at("vcf").contains("paints") && CarData.at("vcf").at("paints").is_array()) {
+                    CarData.at("vcf")["paints"] = nlohmann::json::parse(Data);
+                    c.SetCarData(VID, CarData);
+                }
+
         }
         return;
     }
@@ -461,42 +530,22 @@ void TServer::Apply(TClient& c, int VID, const std::string& pckt) {
         beammp_error("Malformed packet received, no '{' found");
         return;
     }
+
     std::string Packet = pckt.substr(FoundPos);
-    std::string VD = c.GetCarData(VID);
+    nlohmann::json VD = c.GetCarData(VID);
-    if (VD.empty()) {
+    if (VD == nlohmann::detail::value_t::null) {
         beammp_error("Tried to apply change to vehicle that does not exist");
         return;
     }
-    std::string Header = VD.substr(0, VD.find('{'));
 
-    FoundPos = VD.find('{');
+    nlohmann::json Pack = nlohmann::json::parse(Packet, nullptr, false);
-    if (FoundPos == std::string::npos) {
+
-        return;
+    if (Pack.is_discarded()) {
-    }
-    VD = VD.substr(FoundPos);
-    rapidjson::Document Veh, Pack;
-    Veh.Parse(VD.c_str());
-    if (Veh.HasParseError()) {
-        beammp_error("Could not get vehicle config!");
-        return;
-    }
-    Pack.Parse(Packet.c_str());
-    if (Pack.HasParseError() || Pack.IsNull()) {
         beammp_error("Could not get active vehicle config!");
         return;
     }
 
-    for (auto& M : Pack.GetObject()) {
+    c.SetCarData(VID, Pack);
-        if (Veh[M.name].IsNull()) {
-            Veh.AddMember(M.name, M.value, Veh.GetAllocator());
-        } else {
-            Veh[M.name] = Pack[M.name];
-        }
-    }
-    rapidjson::StringBuffer Buffer;
-    rapidjson::Writer<rapidjson::StringBuffer> writer(Buffer);
-    Veh.Accept(writer);
-    c.SetCarData(VID, Header + Buffer.GetString());
 }
 
 void TServer::InsertClient(const std::shared_ptr<TClient>& NewClient) {

src/VehicleData.cpp

@@ -21,7 +21,7 @@
 #include "Common.h"
 #include <utility>
 
-TVehicleData::TVehicleData(int ID, std::string Data)
+TVehicleData::TVehicleData(int ID, nlohmann::json Data)
     : mID(ID)
     , mData(std::move(Data)) {
     beammp_trace("vehicle " + std::to_string(mID) + " constructed");
@@ -30,3 +30,7 @@ TVehicleData::TVehicleData(int ID, std::string Data)
 TVehicleData::~TVehicleData() {
     beammp_trace("vehicle " + std::to_string(mID) + " destroyed");
 }
+
+std::string TVehicleData::DataAsPacket(const std::string& Role, const std::string& Name, const int ID) const {
+    return "Os:" + Role + ":" + Name + ":" + std::to_string(ID) + "-" + std::to_string(this->mID) + ":" + this->mData.dump();
+}

vcpkg.json

@@ -14,6 +14,14 @@
     "openssl",
     "rapidjson",
     "sol2",
-    "curl"
+    "curl",
-  ]
+    "luajit"
+  ],
+  "overrides": [
+    {
+      "name": "sol2",
+      "version": "3.3.1"
+    }
+  ],
+  "builtin-baseline": "5bf0c55239da398b8c6f450818c9e28d36bf9966"
 }