public static string GetRunAsAccountName(string machineName = "")
{
IntPtr ptr = Marshal.AllocHGlobal(4096);
IntPtr svcManagerHandle = IntPtr.Zero;
IntPtr svcHandle = IntPtr.Zero;
try
{
svcManagerHandle = NativeMethods.OpenSCManager(machineName, null, NativeMethods.SC_MANAGER_CONNECT);
if (svcManagerHandle == IntPtr.Zero)
{
DeployerTrace.WriteError(StringResources.Error_UnableToChangeOpenServiceManagerHandle, Utility.GetWin32ErrorMessage(Marshal.GetLastWin32Error()));
return(null);
}
svcHandle = NativeMethods.OpenService(svcManagerHandle, Constants.FabricHostServiceName, NativeMethods.SERVICE_QUERY_CONFIG | NativeMethods.SERVICE_CHANGE_CONFIG);
if (svcHandle == IntPtr.Zero)
{
DeployerTrace.WriteError(StringResources.Error_UnableToChangeOpenServiceManagerHandle, Utility.GetWin32ErrorMessage(Marshal.GetLastWin32Error()));
return(null);
}
int bytesNeeded = 0;
if (NativeMethods.QueryServiceConfig(svcHandle, ptr, 4096, out bytesNeeded))
{
var config = new NativeMethods.QUERY_SERVICE_CONFIG();
Marshal.PtrToStructure(ptr, config);
return(config.lpServiceStartName);
}
else
{
int error = Marshal.GetLastWin32Error();
if (error == NativeMethods.ERROR_INSUFFICIENT_BUFFER)
{
Marshal.FreeHGlobal(ptr);
ptr = Marshal.AllocHGlobal(bytesNeeded);
if (NativeMethods.QueryServiceConfig(svcHandle, ptr, 4096, out bytesNeeded))
{
var config = new NativeMethods.QUERY_SERVICE_CONFIG();
Marshal.PtrToStructure(ptr, config);
return(config.lpServiceStartName);
}
else
{
error = Marshal.GetLastWin32Error();
}
}
DeployerTrace.WriteError(StringResources.Error_UnableToQueryServiceConfiguration, Utility.GetWin32ErrorMessage(error));
return(null);
}
}
catch (Exception e)
{
DeployerTrace.WriteError(StringResources.Error_UnableToQueryServiceConfiguration, e);
return(null);
}
finally
{
Marshal.FreeHGlobal(ptr);
if (svcHandle != IntPtr.Zero)
{
NativeMethods.CloseServiceHandle(svcHandle);
}
if (svcManagerHandle != IntPtr.Zero)
{
NativeMethods.CloseServiceHandle(svcManagerHandle);
}
}
}
internal static ServiceStartupType GetServiceStartupType(string machineName, string serviceName)
{
if (string.IsNullOrEmpty(machineName))
{
machineName = ".";
}
IntPtr svcManagerHandle = IntPtr.Zero;
IntPtr svcHandle = IntPtr.Zero;
IntPtr lpConfig = IntPtr.Zero;
try
{
svcManagerHandle = NativeMethods.OpenSCManager(machineName, null, NativeMethods.SC_MANAGER_CONNECT);
if (svcManagerHandle == IntPtr.Zero)
{
string errorMessage = string.Format(CultureInfo.InvariantCulture, StringResources.Error_UnableToChangeOpenServiceManagerHandle, Utility.GetWin32ErrorMessage(Marshal.GetLastWin32Error()));
DeployerTrace.WriteError(errorMessage);
throw new InvalidOperationException(errorMessage);
}
svcHandle = NativeMethods.OpenService(svcManagerHandle, serviceName, NativeMethods.SERVICE_QUERY_CONFIG);
if (svcHandle == IntPtr.Zero)
{
string errorMessage = string.Format(CultureInfo.InvariantCulture, StringResources.Error_UnableToChangeOpenServiceHandle, Utility.GetWin32ErrorMessage(Marshal.GetLastWin32Error()));
DeployerTrace.WriteError(errorMessage);
throw new InvalidOperationException(errorMessage);
}
int bytesNeeded = 0;
lpConfig = Marshal.AllocHGlobal(4096);
if (lpConfig == IntPtr.Zero)
{
throw new OutOfMemoryException(
string.Format(StringResources.Error_UpdateServiceConfigOOM,
"lpConfig",
Marshal.GetLastWin32Error()));
}
if (NativeMethods.QueryServiceConfig(svcHandle, lpConfig, 4096, out bytesNeeded))
{
var config = new NativeMethods.QUERY_SERVICE_CONFIG();
Marshal.PtrToStructure(lpConfig, config);
return((ServiceStartupType)config.dwStartType);
}
else
{
int error = Marshal.GetLastWin32Error();
if (error == NativeMethods.ERROR_INSUFFICIENT_BUFFER)
{
Marshal.FreeHGlobal(lpConfig);
lpConfig = Marshal.AllocHGlobal(bytesNeeded);
if (NativeMethods.QueryServiceConfig(svcHandle, lpConfig, bytesNeeded, out bytesNeeded))
{
var config = new NativeMethods.QUERY_SERVICE_CONFIG();
Marshal.PtrToStructure(lpConfig, config);
return((ServiceStartupType)config.dwStartType);
}
else
{
error = Marshal.GetLastWin32Error();
}
}
string errorMessage = string.Format(CultureInfo.InvariantCulture, StringResources.Error_UnableToQueryServiceConfiguration, Utility.GetWin32ErrorMessage(error));
DeployerTrace.WriteError(errorMessage);
throw new InvalidOperationException(errorMessage);
}
}
catch (Exception e)
{
DeployerTrace.WriteError(StringResources.Error_UnableToQueryServiceConfiguration, e);
throw;
}
finally
{
if (svcHandle != IntPtr.Zero)
{
NativeMethods.CloseServiceHandle(svcHandle);
}
if (svcManagerHandle != IntPtr.Zero)
{
NativeMethods.CloseServiceHandle(svcManagerHandle);
}
if (lpConfig != IntPtr.Zero)
{
Marshal.FreeHGlobal(lpConfig);
}
}
}