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Create shared mem mapping in steamclient_loader.

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The mapping and it's event object are needed by some games.
This commit is contained in:
redpolline 2022-03-24 02:57:55 -04:00
parent 9cee5004d7
commit d29103bf79
1 changed files with 38 additions and 0 deletions
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38
steamclient_loader/ColdClientLoader.cpp
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@ -32,6 +32,9 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
WCHAR ExeRunDir[MAX_PATH] = { 0 };
WCHAR ExeCommandLine[4096] = { 0 };
WCHAR AppId[128] = { 0 };
HANDLE SharedMemFileMap = 0;
HANDLE SharedMemFileView = 0;
HANDLE SharedMemFileLock = 0;
STARTUPINFOW info = { sizeof(info) };
PROCESS_INFORMATION processInfo;
@ -100,11 +103,38 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
return 0;
}
// Create shared mem map.
SharedMemFileMap = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, 1024, L"Local\\SteamStart_SharedMemFile");
if (!SharedMemFileMap)
{
MessageBoxA(NULL, "Unable to create shared memory mapping.", "ColdClientLoader", MB_ICONERROR);
return 0;
}
SharedMemFileView = MapViewOfFile(SharedMemFileMap, SECTION_ALL_ACCESS, 0, 0, 0);
if (!SharedMemFileView)
{
MessageBoxA(NULL, "Unable to create view of shared memory mapping.", "ColdClientLoader", MB_ICONERROR);
CloseHandle(SharedMemFileMap);
return 0;
}
SharedMemFileLock = CreateEventW(NULL, FALSE, FALSE, L"Local\\SteamStart_SharedMemLock");
if (!SharedMemFileLock)
{
MessageBoxA(NULL, "Unable to create lock for shared memory mapping.", "ColdClientLoader", MB_ICONERROR);
CloseHandle(SharedMemFileView);
CloseHandle(SharedMemFileMap);
return 0;
}
SetEvent(SharedMemFileLock);
WCHAR CommandLine[8192];
_snwprintf(CommandLine, _countof(CommandLine), L"\"%ls\" %ls", ExeFile, ExeCommandLine);
if (!ExeFile[0] || !CreateProcessW(ExeFile, CommandLine, NULL, NULL, TRUE, CREATE_SUSPENDED, NULL, ExeRunDir, &info, &processInfo))
{
MessageBoxA(NULL, "Unable to load the requested EXE file.", "ColdClientLoader", MB_ICONERROR);
CloseHandle(SharedMemFileLock);
CloseHandle(SharedMemFileView);
CloseHandle(SharedMemFileMap);
return 0;
}
HKEY Registrykey;
@ -130,6 +160,9 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
{
MessageBoxA(NULL, "Unable to patch Steam process informations on the Windows registry.", "ColdClientLoader", MB_ICONERROR);
TerminateProcess(processInfo.hProcess, NULL);
CloseHandle(SharedMemFileLock);
CloseHandle(SharedMemFileView);
CloseHandle(SharedMemFileMap);
return 0;
}
}
@ -175,5 +208,10 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
}
}
// Close the SharedMem handles.
CloseHandle(SharedMemFileLock);
CloseHandle(SharedMemFileView);
CloseHandle(SharedMemFileMap);
return 0;
}