feature: auto updater

src/Components/Loader.cpp

@@ -59,6 +59,7 @@
 #include "Modules/Threading.hpp"
 #include "Modules/Toast.hpp"
 #include "Modules/UIFeeder.hpp"
+#include "Modules/Updater.hpp"
 #include "Modules/VisionFile.hpp"
 #include "Modules/Voice.hpp"
 #include "Modules/Vote.hpp"
@@ -172,6 +173,7 @@ namespace Components
 		Register(new Threading());
 		Register(new Toast());
 		Register(new UIFeeder());
+		Register(new Updater());
 		Register(new VisionFile());
 		Register(new Voice());
 		Register(new Vote());

src/Components/Modules/QuickPatch.cpp

@@ -246,9 +246,10 @@ namespace Components
 
 		auto workingDir = std::filesystem::current_path().string();
 		const std::string binary = *Game::sys_exitCmdLine;
+		const std::string command = binary == "iw4x-sp.exe" ? "iw4x-sp" : "iw4x";
 
 		SetEnvironmentVariableA("MW2_INSTALL", workingDir.data());
-		Utils::Library::LaunchProcess(binary, "-singleplayer", workingDir);
+		Utils::Library::LaunchProcess(binary, std::format("{} --pass \"{}\"", command, GetCommandLineA()), workingDir);
 	}
 
 	__declspec(naked) void QuickPatch::SND_GetAliasOffset_Stub()
@@ -320,7 +321,7 @@ namespace Components
 
 		Utils::Hook::Set<void(*)(Game::XAssetHeader, void*)>(0x51FCDD, QuickPatch::R_AddImageToList_Hk);
 
-		Utils::Hook::Set<const char*>(0x41DB8C, "iw4-sp.exe");
+		Utils::Hook::Set<const char*>(0x41DB8C, "iw4x-sp.exe");
 		Utils::Hook(0x4D6989, QuickPatch::Sys_SpawnQuitProcess_Hk, HOOK_CALL).install()->quick();
 
 		// Fix crash as nullptr goes unchecked

src/Components/Modules/Singleton.cpp

@@ -6,6 +6,8 @@
 
 namespace Components
 {
+	HANDLE Singleton::Mutex;
+
 	bool Singleton::FirstInstance = true;
 
 	bool Singleton::IsFirstInstance()
@@ -13,6 +15,14 @@ namespace Components
 		return FirstInstance;
 	}
 
+	void Singleton::preDestroy()
+	{
+		if (INVALID_HANDLE_VALUE != Mutex)
+		{
+			CloseHandle(Mutex);
+		}
+	}
+
 	Singleton::Singleton()
 	{
 		if (Flags::HasFlag("version"))
@@ -31,7 +41,8 @@ namespace Components
 
 		if (Loader::IsPerformingUnitTests() || Dedicated::IsEnabled() || ZoneBuilder::IsEnabled()) return;
 
-		FirstInstance = (CreateMutexA(nullptr, FALSE, "iw4x_mutex") && GetLastError() != ERROR_ALREADY_EXISTS);
+		Mutex = CreateMutexA(nullptr, FALSE, "iw4x_mutex");
+		FirstInstance = ((INVALID_HANDLE_VALUE != Mutex) && GetLastError() != ERROR_ALREADY_EXISTS);
 
 		if (!FirstInstance && !ConnectProtocol::Used() && MessageBoxA(nullptr, "Do you want to start another instance?\nNot all features will be available!", "Game already running", MB_ICONEXCLAMATION | MB_YESNO) == IDNO)
 		{

src/Components/Modules/Singleton.hpp

@@ -7,9 +7,12 @@ namespace Components
 	public:
 		Singleton();
 
+		void preDestroy() override;
+
 		static bool IsFirstInstance();
 
 	private:
+		static HANDLE Mutex;
 		static bool FirstInstance;
 	};
 }

src/Components/Modules/Updater.cpp

@@ -0,0 +1,106 @@
+#include <STDInclude.hpp>
+
+#include "Updater.hpp"
+#include "Scheduler.hpp"
+
+#include <Utils/WebIO.hpp>
+
+#include <rapidjson/document.h>
+#include <rapidjson/prettywriter.h>
+#include <rapidjson/stringbuffer.h>
+
+namespace Components
+{
+	namespace
+	{
+		const Game::dvar_t* cl_updateAvailable;
+
+		// If they use the alterware-launcher once to install they will have this file
+		// If they don't, what are they waiting for?
+		constexpr auto* revisionFile = ".iw4xrevision";
+
+		void CheckForUpdate()
+		{
+			std::string revision;
+			if (!Utils::IO::ReadFile(revisionFile, &revision) || revision.empty())
+			{
+				Logger::Print(".iw4xrevision does not exist. Notifying the user an update is available\n");
+				Game::Dvar_SetBool(cl_updateAvailable, true);
+			}
+
+			const auto result = Utils::WebIO("IW4x", "https://api.github.com/repos/iw4x/iw4x-client/releases/latest").setTimeout(5000)->get();
+			if (result.empty())
+			{
+				// Nothing to do in this situation. We won't know if we need to update or not
+				Logger::Print("Could not fetch latest tag from GitHub\n");
+				return;
+			}
+
+			rapidjson::Document doc{};
+			const rapidjson::ParseResult parseResult = doc.Parse(result);
+			if (!parseResult || !doc.IsObject())
+			{
+				// Nothing to do in this situation. We won't know if we need to update or not
+				Logger::Print("GitHub sent an invalid reply\n");
+				return;
+			}
+
+			if (!doc.HasMember("tag_name") || !doc["tag_name"].IsString())
+			{
+				// Nothing to do in this situation. We won't know if we need to update or not
+				Logger::Print("GitHub sent an invalid reply\n");
+				return;
+			}
+
+			const auto* tag = doc["tag_name"].GetString();
+			if (revision != tag)
+			{
+				// A new version came out!
+				Game::Dvar_SetBool(cl_updateAvailable, true);
+			}
+		}
+
+		std::optional<std::string> GetLauncher()
+		{
+			if (Utils::IO::FileExists("alterware-launcher.exe"))
+			{
+				return "alterware-launcher.exe";
+			}
+
+			if (Utils::IO::FileExists("alterware-launcher-x86.exe"))
+			{
+				return "alterware-launcher-x86.exe";
+			}
+
+			if (Utils::IsWineEnvironment() && Utils::IO::FileExists("alterware-launcher"))
+			{
+				return "alterware-launcher";
+			}
+
+			return {};
+		}
+	}
+
+	Updater::Updater()
+	{
+		cl_updateAvailable = Game::Dvar_RegisterBool("cl_updateAvailable", false, Game::DVAR_NONE, "Whether an update is available or not");
+		Scheduler::Once(CheckForUpdate, Scheduler::Pipeline::ASYNC);
+
+		UIScript::Add("checkForUpdate", [](const UIScript::Token& /*token*/, const Game::uiInfo_s* /*info*/)
+		{
+			CheckForUpdate();
+		});
+
+		UIScript::Add("getAutoUpdate", [](const UIScript::Token& /*token*/, const Game::uiInfo_s* /*info*/)
+		{
+			if (const auto exe = GetLauncher(); exe.has_value())
+			{
+				Game::Sys_QuitAndStartProcess(exe.value().data());
+				return;
+			}
+
+			// No launcher was found on the system, time to tell them to download it from GitHub
+			Utils::OpenUrl("https://forum.alterware.dev/t/how-to-install-the-alterware-launcher/56");
+		});
+	}
+}

src/Components/Modules/Updater.hpp

@@ -0,0 +1,10 @@
+#pragma once
+
+namespace Components
+{
+	class Updater : public Component
+	{
+	public:
+		Updater();
+	};
+}

src/Game/System.cpp

@@ -25,6 +25,7 @@ namespace Game
 	Sys_SetValue_t Sys_SetValue = Sys_SetValue_t(0x4B2F50);
 	Sys_CreateFile_t Sys_CreateFile = Sys_CreateFile_t(0x4B2EF0);
 	Sys_OutOfMemErrorInternal_t Sys_OutOfMemErrorInternal = Sys_OutOfMemErrorInternal_t(0x4B2E60);
+	Sys_QuitAndStartProcess_t Sys_QuitAndStartProcess = Sys_QuitAndStartProcess_t(0x45FCF0);
 
 	char(*sys_exitCmdLine)[1024] = reinterpret_cast<char(*)[1024]>(0x649FB68);
 

src/Game/System.hpp

@@ -71,6 +71,9 @@ namespace Game
 	typedef void(*Sys_OutOfMemErrorInternal_t)(const char* filename, int line);
 	extern Sys_OutOfMemErrorInternal_t Sys_OutOfMemErrorInternal;
 
+	typedef void(*Sys_QuitAndStartProcess_t)(const char*);
+	extern Sys_QuitAndStartProcess_t Sys_QuitAndStartProcess;
+
 	extern char(*sys_exitCmdLine)[1024];
 
 	extern RTL_CRITICAL_SECTION* s_criticalSection;

src/Utils/Library.cpp

@@ -104,20 +104,20 @@ namespace Utils
 
 	void Library::LaunchProcess(const std::string& process, const std::string& commandLine, const std::string& currentDir)
 	{
-		STARTUPINFOA startup_info;
+		STARTUPINFOA startupInfo;
-		PROCESS_INFORMATION process_info;
+		PROCESS_INFORMATION processInfo;
 
-		ZeroMemory(&startup_info, sizeof(startup_info));
+		ZeroMemory(&startupInfo, sizeof(startupInfo));
-		ZeroMemory(&process_info, sizeof(process_info));
+		ZeroMemory(&processInfo, sizeof(processInfo));
-		startup_info.cb = sizeof(startup_info);
+		startupInfo.cb = sizeof(startupInfo);
 
 		CreateProcessA(process.data(), const_cast<char*>(commandLine.data()), nullptr,
 			nullptr, false, NULL, nullptr, currentDir.data(),
-			&startup_info, &process_info);
+			&startupInfo, &processInfo);
 
-		if (process_info.hThread && process_info.hThread != INVALID_HANDLE_VALUE)
+		if (processInfo.hThread && processInfo.hThread != INVALID_HANDLE_VALUE)
-			CloseHandle(process_info.hThread);
+			CloseHandle(processInfo.hThread);
-		if (process_info.hProcess && process_info.hProcess != INVALID_HANDLE_VALUE)
+		if (processInfo.hProcess && processInfo.hProcess != INVALID_HANDLE_VALUE)
-			CloseHandle(process_info.hProcess);
+			CloseHandle(processInfo.hProcess);
 	}
 }