private bool CheckIfExistsInWindows(string serviceName)
{
if (string.IsNullOrWhiteSpace(serviceName))
{
return(false);
}
var managerHandle = Windows.OpenSCManagerW(
null,
null,
Windows.ServiceControlManagerAccessRight.Connect
);
if (managerHandle == IntPtr.Zero)
{
var errorCode = Marshal.GetLastWin32Error();
Log($"Can not open Windows service controller manager, error code: {errorCode}");
return(false);
}
var serviceHandle = Windows.OpenServiceW(
managerHandle,
serviceName,
Windows.ServiceAccessRight.QueryConfig
);
if (serviceHandle == IntPtr.Zero)
{
var errorCode = Marshal.GetLastWin32Error();
if (errorCode != (int)Windows.Error.ServiceDoesNotExist)
{
Log($"Can not open Windows service \"{serviceName}\", error code: {errorCode}");
}
return(false);
}
Windows.CloseServiceHandle(serviceHandle);
return(true);
}
private ServiceInfo ChangeStartTypeInWindows(
string serviceName,
StartType startType)
{
if (string.IsNullOrWhiteSpace(serviceName))
{
return(new ServiceInfo
{
ServiceName = serviceName,
ErrorCode = (int)Windows.Error.InvalidName,
ErrorMessage = $"Service name \"{serviceName}\" is invalid"
});
}
var managerHandle = Windows.OpenSCManagerW(
null,
null,
Windows.ServiceControlManagerAccessRight.Connect
);
if (managerHandle == IntPtr.Zero)
{
var errorCode = Marshal.GetLastWin32Error();
return(new ServiceInfo
{
ServiceName = serviceName,
ErrorCode = errorCode,
ErrorMessage = $"Can not open Windows service controller manager, error code: {errorCode}"
});
}
var serviceInfo = new ServiceInfo
{
ServiceName = serviceName,
StartType = startType
};
var serviceHandle = Windows.OpenServiceW(
managerHandle,
serviceName,
Windows.ServiceAccessRight.ChangeConfig |
Windows.ServiceAccessRight.QueryConfig |
Windows.ServiceAccessRight.QueryStatus
);
if (serviceHandle == IntPtr.Zero)
{
var errorCode = Marshal.GetLastWin32Error();
serviceInfo.ErrorCode = errorCode;
serviceInfo.ErrorMessage = $"Can not open Windows service \"{serviceName}\", error code: {errorCode}";
}
else
{
var success = Windows.ChangeServiceConfigW(
serviceHandle,
Windows.ServiceType.NoChange,
ConvertToWindows(startType),
Windows.ErrorControlType.NoChange,
null,
null,
IntPtr.Zero,
null,
null,
null,
null
);
if (!success)
{
var errorCode = Marshal.GetLastWin32Error();
serviceInfo.ErrorCode = errorCode;
serviceInfo.ErrorMessage = $"Can not change Windows service \"{serviceName}\" config, error code: {errorCode}";
}
serviceInfo = UpdateCurrentStateInWindows(serviceHandle, serviceInfo);
Windows.CloseServiceHandle(serviceHandle);
}
Windows.CloseServiceHandle(managerHandle);
return(serviceInfo);
}
private ServiceInfo QueryStartTypeInWindows(string serviceName)
{
if (string.IsNullOrWhiteSpace(serviceName))
{
return(new ServiceInfo
{
ServiceName = serviceName,
ErrorCode = (int)Windows.Error.InvalidName,
ErrorMessage = $"Service name \"{serviceName}\" is invalid"
});
}
var managerHandle = Windows.OpenSCManagerW(
null,
null,
Windows.ServiceControlManagerAccessRight.Connect
);
if (managerHandle == IntPtr.Zero)
{
var errorCode = Marshal.GetLastWin32Error();
return(new ServiceInfo
{
ServiceName = serviceName,
ErrorCode = errorCode,
ErrorMessage = $"Can not open Windows service controller manager, error code: {errorCode}"
});
}
var serviceInfo = new ServiceInfo
{
ServiceName = serviceName
};
var serviceHandle = Windows.OpenServiceW(
managerHandle,
serviceName,
Windows.ServiceAccessRight.QueryConfig | Windows.ServiceAccessRight.QueryStatus
);
if (serviceHandle == IntPtr.Zero)
{
var errorCode = Marshal.GetLastWin32Error();
serviceInfo.ErrorCode = errorCode;
serviceInfo.ErrorMessage = $"Can not open Windows service \"{serviceName}\", error code: {errorCode}";
}
else
{
const uint bytesAllocated = 8192;
var serviceConfigPtr = Marshal.AllocHGlobal((int)bytesAllocated);
try
{
uint bytes = 0;
var success = Windows.QueryServiceConfigW(
serviceHandle,
serviceConfigPtr,
bytesAllocated,
ref bytes
);
if (success)
{
var serviceConfig = (Windows.QueryServiceConfig)Marshal.PtrToStructure(
serviceConfigPtr,
typeof(Windows.QueryServiceConfig)
);
serviceInfo.StartType = ConvertFromWindows(serviceConfig.dwStartType);
}
else
{
var errorCode = Marshal.GetLastWin32Error();
serviceInfo.ErrorCode = errorCode;
serviceInfo.ErrorMessage = $"Can not query Windows service \"{serviceName}\" config, error code: {errorCode}";
}
}
catch (Exception e)
{
Log($"Can not query Windows service \"{serviceName}\" start type: {e.Message}");
}
finally
{
Marshal.FreeHGlobal(serviceConfigPtr);
}
serviceInfo = UpdateCurrentStateInWindows(serviceHandle, serviceInfo);
Windows.CloseServiceHandle(serviceHandle);
}
Windows.CloseServiceHandle(managerHandle);
return(serviceInfo);
}
