Add steamclient loader based on the one Rat431 made for his ColdAPI steam emulator.

Readme_experimental_steamclient.txt

@@ -0,0 +1,4 @@
+This is a build of the experimental version of my emu in steamclient mode with an included loader. See both the regular and experimental readmes for how to configure it.
+Note that all emu config files should be put beside the steamclient dll. You do not need to put a steam_interfaces.txt file for the steamclient version of the emu.
+
+To use the loader, put both steamclient dlls and the loader in a folder and edit the config file. Make sure you put the right appid in the ini file.

build_win_release.bat

@@ -2,6 +2,7 @@
 cd /d "%~dp0"
 del /Q /S release\*
 rmdir /S /Q release\experimental
+rmdir /S /Q release\experimental_steamclient
 rmdir /S /Q release\lobby_connect
 rmdir /S /Q release
 mkdir release
@@ -18,5 +19,6 @@ cl /LD /DEMU_RELEASE_BUILD /DNDEBUG /I%PROTOBUF_X64_DIRECTORY%\include\ dll/*.cp
 copy Readme_release.txt release\Readme.txt
 xcopy /s files_example\* release\
 call build_win_release_experimental.bat
+call build_win_release_experimental_steamclient.bat
 call build_win_lobby_connect.bat
 call build_win_find_interfaces.bat

build_win_release_experimental_steamclient.bat

@@ -0,0 +1,16 @@
+@echo off
+cd /d "%~dp0"
+mkdir release\experimental_steamclient
+del /Q release\experimental_steamclient\*
+call build_set_protobuf_directories.bat
+"%PROTOC_X86_EXE%" -I.\dll\ --cpp_out=.\dll\ .\dll\net.proto
+call build_env_x86.bat
+cl dll/rtlgenrandom.c dll/rtlgenrandom.def
+cl /LD /DEMU_RELEASE_BUILD /DEMU_EXPERIMENTAL_BUILD /DSTEAMCLIENT_DLL /DCONTROLLER_SUPPORT /DNDEBUG /I%PROTOBUF_X86_DIRECTORY%\include\ dll/*.cpp dll/*.cc detours/*.cpp controller/gamepad.c "%PROTOBUF_X86_LIBRARY%" Iphlpapi.lib Ws2_32.lib rtlgenrandom.lib Shell32.lib /EHsc /MP12 /Ox /link /debug:none /OUT:release\experimental_steamclient\steamclient.dll
+"%PROTOC_X64_EXE%" -I.\dll\ --cpp_out=.\dll\ .\dll\net.proto
+cl steamclient_loader/*.cpp advapi32.lib user32.lib /EHsc /MP12 /Ox /link /debug:none /OUT:release\experimental_steamclient\steamclient_loader.exe
+copy steamclient_loader\ColdClientLoader.ini release\experimental_steamclient\
+call build_env_x64.bat
+cl dll/rtlgenrandom.c dll/rtlgenrandom.def
+cl /LD /DEMU_RELEASE_BUILD /DEMU_EXPERIMENTAL_BUILD /DSTEAMCLIENT_DLL /DCONTROLLER_SUPPORT /DNDEBUG /I%PROTOBUF_X64_DIRECTORY%\include\ dll/*.cpp dll/*.cc detours/*.cpp controller/gamepad.c "%PROTOBUF_X64_LIBRARY%" Iphlpapi.lib Ws2_32.lib rtlgenrandom.lib Shell32.lib /EHsc /MP12 /Ox /link /debug:none /OUT:release\experimental_steamclient\steamclient64.dll
+copy Readme_experimental_steamclient.txt release\experimental_steamclient\Readme.txt

steamclient_loader/ColdClientLoader.cpp

@@ -0,0 +1,216 @@
+// My own modified version of ColdClientLoader originally written by Rat431
+
+#define WIN32_LEAN_AND_MEAN             // Exclude rarely-used stuff from Windows headers
+// Windows Header Files
+#include <windows.h>
+// C RunTime Header Files
+#include <stdlib.h>
+#include <malloc.h>
+#include <memory.h>
+#include <tchar.h>
+
+bool IsNotRelativePathOrRemoveFileName(CHAR* output, bool Remove)
+{
+	int LG = lstrlenA(output);
+	for (int i = LG; i > 0; i--) {
+		if (output[i] == '\\') {
+			if(Remove)
+				RtlFillMemory(&output[i], LG - i, NULL);
+			return true;
+		}
+	}
+	return false;
+}
+
+int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPWSTR lpCmdLine, _In_ int nCmdShow)
+{
+	CHAR CurrentDirectory[MAX_PATH] = { 0 };
+	CHAR Client64Path[MAX_PATH] = { 0 };
+	CHAR ClientPath[MAX_PATH] = { 0 };
+	CHAR ExeFile[MAX_PATH] = { 0 };
+	CHAR ExeRunDir[MAX_PATH] = { 0 };
+	CHAR ExeCommandLine[300] = { 0 };
+	CHAR AppId[128] = { 0 };
+
+	STARTUPINFOA info = { sizeof(info) };
+	PROCESS_INFORMATION processInfo;
+
+	int Length = GetModuleFileNameA(GetModuleHandleA(NULL), CurrentDirectory, sizeof(CurrentDirectory)) + 1;
+	for (int i = Length; i > 0; i--) {
+		if (CurrentDirectory[i] == '\\') {
+			lstrcpyA(&CurrentDirectory[i + 1], "ColdClientLoader.ini");
+			break;
+		}
+	}
+	if (GetFileAttributesA(CurrentDirectory) == INVALID_FILE_ATTRIBUTES) {
+		MessageBoxA(NULL, "Couldn't find the configuration file(ColdClientLoader.ini).", "ColdClientLoader", MB_ICONERROR);
+		ExitProcess(NULL);
+	}
+
+	GetPrivateProfileStringA("SteamClient", "SteamClient64Dll", "", Client64Path, MAX_PATH, CurrentDirectory);
+	GetPrivateProfileStringA("SteamClient", "SteamClientDll", "", ClientPath, MAX_PATH, CurrentDirectory);
+	GetPrivateProfileStringA("SteamClient", "Exe", NULL, ExeFile, MAX_PATH, CurrentDirectory);
+	GetPrivateProfileStringA("SteamClient", "ExeRunDir", NULL, ExeRunDir, MAX_PATH, CurrentDirectory);
+	GetPrivateProfileStringA("SteamClient", "ExeCommandLine", NULL, ExeCommandLine, 300, CurrentDirectory);
+	GetPrivateProfileStringA("SteamClient", "AppId", NULL, AppId, sizeof(AppId), CurrentDirectory);
+
+	if (AppId[0]) {
+		SetEnvironmentVariableA("SteamAppId", AppId);
+		SetEnvironmentVariableA("SteamGameId", AppId);
+	}
+
+	CHAR TMP[MAX_PATH] = { 0 };
+	if (!IsNotRelativePathOrRemoveFileName(Client64Path, false)) {
+		ZeroMemory(TMP, sizeof(TMP));
+		lstrcpyA(TMP, Client64Path);
+		ZeroMemory(Client64Path, sizeof(Client64Path));
+		GetFullPathNameA(TMP, MAX_PATH, Client64Path, NULL);
+	}
+	if (!IsNotRelativePathOrRemoveFileName(ClientPath, false)) {
+		ZeroMemory(TMP, sizeof(TMP));
+		lstrcpyA(TMP, ClientPath);
+		ZeroMemory(ClientPath, sizeof(ClientPath));
+		GetFullPathNameA(TMP, MAX_PATH, ClientPath, NULL);
+	}
+	if (!IsNotRelativePathOrRemoveFileName(ExeFile, false)) {
+		ZeroMemory(TMP, sizeof(TMP));
+		lstrcpyA(TMP, ExeFile);
+		ZeroMemory(ExeFile, sizeof(ExeFile));
+		GetFullPathNameA(TMP, MAX_PATH, ExeFile, NULL);
+	}
+	if (!IsNotRelativePathOrRemoveFileName(ExeRunDir, false)) {
+		ZeroMemory(TMP, sizeof(TMP));
+		lstrcpyA(TMP, ExeRunDir);
+		ZeroMemory(ExeRunDir, sizeof(ExeRunDir));
+		GetFullPathNameA(TMP, MAX_PATH, ExeRunDir, NULL);
+	}
+
+	if (GetFileAttributesA(Client64Path) == INVALID_FILE_ATTRIBUTES) {
+		MessageBoxA(NULL, "Couldn't find the requested SteamClient64Dll.", "ColdClientLoader", MB_ICONERROR);
+		ExitProcess(NULL);
+	}
+
+	if (GetFileAttributesA(ClientPath) == INVALID_FILE_ATTRIBUTES) {
+		MessageBoxA(NULL, "Couldn't find the requested SteamClientDll.", "ColdClientLoader", MB_ICONERROR);
+		ExitProcess(NULL);
+	}
+
+	if (GetFileAttributesA(ExeFile) == INVALID_FILE_ATTRIBUTES) {
+		MessageBoxA(NULL, "Couldn't find the requested Exe file.", "ColdClientLoader", MB_ICONERROR);
+		ExitProcess(NULL);
+	}
+
+	if (ExeFile[0] != NULL && CreateProcessA(ExeFile, ExeCommandLine, NULL, NULL, TRUE, CREATE_SUSPENDED, NULL, ExeRunDir, &info, &processInfo))
+	{
+
+	}
+	else
+	{
+		MessageBoxA(NULL, "Unable to load the requested EXE file.", "ColdClientLoader", MB_ICONERROR);
+		ExitProcess(NULL);
+	}
+	HKEY Registrykey;
+	// Declare some variables to be used for Steam registry.
+	DWORD UserId = 0x03100004771F810D & 0xffffffff;
+	DWORD ProcessID = GetCurrentProcessId();
+
+	if (RegOpenKeyExA(HKEY_CURRENT_USER, "Software\\Valve\\Steam\\ActiveProcess", 0, KEY_ALL_ACCESS, &Registrykey) != ERROR_SUCCESS)
+	{
+		if (RegCreateKeyExA(HKEY_CURRENT_USER, "Software\\Valve\\Steam\\ActiveProcess", 0, 0, REG_OPTION_NON_VOLATILE,
+			KEY_ALL_ACCESS, NULL, &Registrykey, NULL) != ERROR_SUCCESS)
+		{
+			MessageBoxA(NULL, "Unable to patch Steam process informations on the Windows registry.", "ColdClientLoader", MB_ICONERROR);
+			TerminateProcess(processInfo.hProcess, NULL);
+			ExitProcess(NULL);
+		}
+		else
+		{
+
+			// Set values to Windows registry.
+			RegSetValueExA(Registrykey, "ActiveUser", NULL, REG_DWORD, (LPBYTE)& UserId, sizeof(DWORD));
+			RegSetValueExA(Registrykey, "pid", NULL, REG_DWORD, (LPBYTE)& ProcessID, sizeof(DWORD));
+
+			{
+				// Before saving to the registry check again if the path was valid and if the file exist
+				if (GetFileAttributesA(ClientPath) != INVALID_FILE_ATTRIBUTES) {
+					RegSetValueExA(Registrykey, "SteamClientDll", NULL, REG_SZ, (LPBYTE)ClientPath, (DWORD)lstrlenA(ClientPath) + 1);
+				}
+				else {
+					RegSetValueExA(Registrykey, "SteamClientDll", NULL, REG_SZ, (LPBYTE)"", (DWORD)lstrlenA(ClientPath) + 1);
+				}
+				if (GetFileAttributesA(Client64Path) != INVALID_FILE_ATTRIBUTES) {
+					RegSetValueExA(Registrykey, "SteamClientDll64", NULL, REG_SZ, (LPBYTE)Client64Path, (DWORD)lstrlenA(Client64Path) + 1);
+				}
+				else {
+					RegSetValueExA(Registrykey, "SteamClientDll64", NULL, REG_SZ, (LPBYTE)"", (DWORD)lstrlenA(Client64Path) + 1);
+				}
+			}
+			RegSetValueExA(Registrykey, "Universe", NULL, REG_SZ, (LPBYTE)"Public", (DWORD)lstrlenA("Public") + 1);
+
+			// Close the HKEY Handle.
+			RegCloseKey(Registrykey);
+
+			ResumeThread(processInfo.hThread);
+			WaitForSingleObject(processInfo.hThread, INFINITE);
+			CloseHandle(processInfo.hProcess);
+			CloseHandle(processInfo.hThread);
+			ExitProcess(NULL);
+		}
+	}
+	else
+	{
+		DWORD keyType = REG_SZ;
+		CHAR OrgSteamCDir[MAX_PATH] = { 0 };
+		CHAR OrgSteamCDir64[MAX_PATH] = { 0 };
+		DWORD Size1 = MAX_PATH;
+		DWORD Size2 = MAX_PATH;
+
+		// Get original values to restore later.
+		RegQueryValueExA(Registrykey, "SteamClientDll", 0, &keyType, (LPBYTE)& OrgSteamCDir, &Size1);
+		RegQueryValueExA(Registrykey, "SteamClientDll64", 0, &keyType, (LPBYTE)& OrgSteamCDir64, &Size2);
+
+		// Set values to Windows registry.
+		RegSetValueExA(Registrykey, "ActiveUser", NULL, REG_DWORD, (LPBYTE)& UserId, sizeof(DWORD));
+		RegSetValueExA(Registrykey, "pid", NULL, REG_DWORD, (LPBYTE)& ProcessID, sizeof(DWORD));
+
+
+		{
+			// Before saving to the registry check again if the path was valid and if the file exist
+			if (GetFileAttributesA(ClientPath) != INVALID_FILE_ATTRIBUTES) {
+				RegSetValueExA(Registrykey, "SteamClientDll", NULL, REG_SZ, (LPBYTE)ClientPath, (DWORD)lstrlenA(ClientPath) + 1);
+			}
+			else {
+				RegSetValueExA(Registrykey, "SteamClientDll", NULL, REG_SZ, (LPBYTE)"", (DWORD)lstrlenA(ClientPath) + 1);
+			}
+			if (GetFileAttributesA(Client64Path) != INVALID_FILE_ATTRIBUTES) {
+				RegSetValueExA(Registrykey, "SteamClientDll64", NULL, REG_SZ, (LPBYTE)Client64Path, (DWORD)lstrlenA(Client64Path) + 1);
+			}
+			else {
+				RegSetValueExA(Registrykey, "SteamClientDll64", NULL, REG_SZ, (LPBYTE)"", (DWORD)lstrlenA(Client64Path) + 1);
+			}
+		}
+		RegSetValueExA(Registrykey, "Universe", NULL, REG_SZ, (LPBYTE)"Public", (DWORD)lstrlenA("Public") + 1);
+
+		// Close the HKEY Handle.
+		RegCloseKey(Registrykey);
+
+		ResumeThread(processInfo.hThread);
+		WaitForSingleObject(processInfo.hThread, INFINITE);
+		CloseHandle(processInfo.hProcess);
+		CloseHandle(processInfo.hThread);
+
+		if (RegOpenKeyExA(HKEY_CURRENT_USER, "Software\\Valve\\Steam\\ActiveProcess", 0, KEY_ALL_ACCESS, &Registrykey) == ERROR_SUCCESS)
+		{
+			// Restore the values.
+			RegSetValueExA(Registrykey, "SteamClientDll", NULL, REG_SZ, (LPBYTE)OrgSteamCDir, (DWORD)lstrlenA(OrgSteamCDir) + 1);
+			RegSetValueExA(Registrykey, "SteamClientDll64", NULL, REG_SZ, (LPBYTE)OrgSteamCDir64, (DWORD)lstrlenA(OrgSteamCDir64) + 1);
+
+			// Close the HKEY Handle.
+			RegCloseKey(Registrykey);
+		}
+		ExitProcess(NULL);
+	}
+
+
+	return 1;
+}

steamclient_loader/ColdClientLoader.ini

@@ -0,0 +1,10 @@
+#My own modified version of ColdClientLoader originally by Rat431
+[SteamClient]
+Exe=game.exe
+ExeRunDir=.
+ExeCommandLine=
+#IMPORTANT:
+AppId=
+
+SteamClientDll=steamclient.dll
+SteamClient64Dll=steamclient64.dll