Win32 C++ How to get current application Service Name - winapi

Question

Assuming my code (DLL) already runs inside application that runs as service.
How to find the service name ?
I would like more elegant way than getting process path and enumerating services in registry.

Answer 1

I would suggest using GetCurrentProcessId to get the process ID of the service you're running in. Then use EnumServiceStatusEx to enumerate the services (without having to use the registry yourself).
You can match the process id from ENUM_SERVICE_STATUS_PROCESS.ServiceStatusProcess.dwProcessId to your current process ID and get the name. For example:
void enumerateServices( DWORD processId )
{
SC_HANDLE hSCM = OpenSCManager(NULL, NULL,
SC_MANAGER_ENUMERATE_SERVICE | SC_MANAGER_CONNECT);
if (hSCM == NULL)
{
return;
}
DWORD bufferSize = 0;
DWORD requiredBufferSize = 0;
DWORD totalServicesCount = 0;
EnumServicesStatusEx( hSCM,
SC_ENUM_PROCESS_INFO,
SERVICE_WIN32,
SERVICE_STATE_ALL,
nullptr,
bufferSize,
&requiredBufferSize,
&totalServicesCount,
nullptr,
nullptr );
std::vector<BYTE> buffer( requiredBufferSize );
EnumServicesStatusEx( hSCM,
SC_ENUM_PROCESS_INFO,
SERVICE_WIN32,
SERVICE_STATE_ALL,
buffer.data(),
buffer.size(),
&requiredBufferSize,
&totalServicesCount,
nullptr,
nullptr );
LPENUM_SERVICE_STATUS_PROCESS services =
reinterpret_cast<LPENUM_SERVICE_STATUS_PROCESS>( buffer.data() );
for ( unsigned int i = 0; i < totalServicesCount; ++i )
{
ENUM_SERVICE_STATUS_PROCESS service = services[i];
if ( service.ServiceStatusProcess.dwProcessId == processId )
{
// This is your service.
std::wcout << service.lpServiceName << L"PID: " <<
service.ServiceStatusProcess.dwProcessId << std::endl;
}
}
( void )CloseServiceHandle( hSCM );
}
Usual disclaimers about error handling apply. I've also not properly checked buffer sizes, etc.