public static extern bool OpenProcessToken(IntPtr ProcessHandle, int DesiredAccess, out SafeTokenHandle TokenHandle);
public static extern bool AdjustTokenPrivileges(SafeTokenHandle TokenHandle,
[MarshalAs(UnmanagedType.Bool)] bool DisableAllPrivileges,
ref TOKEN_PRIVILEGES NewState,
UInt32 BufferLength,
IntPtr PreviousState,
IntPtr ReturnLength);
public static extern SafeTokenHandle OpenService(SafeTokenHandle hSCManager, string lpServiceName, uint dwDesiredAccess);
public static extern bool ChangeServiceConfig2(SafeTokenHandle serviceHandle, uint infoLevel,
IntPtr lpInfo);
public static extern bool AdjustTokenPrivileges(SafeTokenHandle TokenHandle,
[MarshalAs(UnmanagedType.Bool)]bool DisableAllPrivileges,
ref TOKEN_PRIVILEGES NewState,
UInt32 BufferLength,
IntPtr PreviousState,
IntPtr ReturnLength);
public static extern bool CloseServiceHandle(SafeTokenHandle hSCObject);
public static extern bool OpenProcessToken(IntPtr ProcessHandle, int DesiredAccess, out SafeTokenHandle TokenHandle);
public static extern bool ChangeServiceConfig2(SafeTokenHandle serviceHandle, uint infoLevel,
IntPtr lpInfo);
public static extern SafeTokenHandle OpenService(SafeTokenHandle hSCManager, string lpServiceName, uint dwDesiredAccess);
public static extern bool CloseServiceHandle(SafeTokenHandle hSCObject);
public void SetServiceRecoveryOptions(HostSettings settings, ServiceRecoveryOptions options)
{
SafeTokenHandle scmHandle = null;
SafeTokenHandle serviceHandle = null;
IntPtr lpsaActions = IntPtr.Zero;
IntPtr lpInfo = IntPtr.Zero;
IntPtr lpFlagInfo = IntPtr.Zero;
try
{
List <NativeMethods.SC_ACTION> actions = options.Actions.Select(x => x.GetAction()).ToList();
if (actions.Count == 0)
{
throw new TopshelfException("Must be at least one failure action configured");
}
scmHandle = NativeMethods.OpenSCManager(null, null, (int)NativeMethods.SCM_ACCESS.SC_MANAGER_ALL_ACCESS);
if (scmHandle == null)
{
throw new TopshelfException("Failed to open service control manager");
}
serviceHandle = NativeMethods.OpenService(scmHandle, settings.ServiceName,
(int)NativeMethods.SCM_ACCESS.SC_MANAGER_ALL_ACCESS);
if (serviceHandle == null)
{
throw new TopshelfException("Failed to open service: " + settings.ServiceName);
}
int actionSize = Marshal.SizeOf(typeof(NativeMethods.SC_ACTION));
lpsaActions = Marshal.AllocHGlobal(actionSize * actions.Count + 1);
if (lpsaActions == IntPtr.Zero)
{
throw new TopshelfException("Unable to allocate memory for service recovery actions");
}
IntPtr nextAction = lpsaActions;
for (int i = 0; i < actions.Count; i++)
{
Marshal.StructureToPtr(actions[i], nextAction, false);
nextAction = (IntPtr)(nextAction.ToInt64() + actionSize);
}
var finalAction = new NativeMethods.SC_ACTION();
finalAction.Type = (int)NativeMethods.SC_ACTION_TYPE.None;
finalAction.Delay = (int)TimeSpan.FromMinutes(1).TotalMilliseconds;
Marshal.StructureToPtr(finalAction, nextAction, false);
string rebootMessage = options.Actions.Where(x => x.GetType() == typeof(RestartSystemRecoveryAction))
.OfType <RestartSystemRecoveryAction>().Select(x => x.RestartMessage).
FirstOrDefault() ?? "";
string runProgramCommand = options.Actions.Where(x => x.GetType() == typeof(RunProgramRecoveryAction))
.OfType <RunProgramRecoveryAction>().Select(x => x.Command).
FirstOrDefault() ?? "";
var failureActions = new NativeMethods.SERVICE_FAILURE_ACTIONS();
failureActions.dwResetPeriod =
(int)TimeSpan.FromDays(options.ResetPeriod).TotalSeconds;
failureActions.lpRebootMsg = rebootMessage;
failureActions.lpCommand = runProgramCommand;
failureActions.cActions = actions.Count + 1;
failureActions.actions = lpsaActions;
lpInfo = Marshal.AllocHGlobal(Marshal.SizeOf(failureActions));
if (lpInfo == IntPtr.Zero)
{
throw new TopshelfException("Failed to allocate memory for failure actions");
}
Marshal.StructureToPtr(failureActions, lpInfo, false);
// If user specified a Restart option, get shutdown privileges
if (options.Actions.Any(x => x.GetType() == typeof(RestartSystemRecoveryAction)))
{
RequestShutdownPrivileges();
}
if (!NativeMethods.ChangeServiceConfig2(serviceHandle,
NativeMethods.SERVICE_CONFIG_FAILURE_ACTIONS, lpInfo))
{
throw new TopshelfException(string.Format("Failed to change service recovery options. Windows Error: {0}", new Win32Exception().Message));
}
if (false == options.RecoverOnCrashOnly)
{
var flag = new NativeMethods.SERVICE_FAILURE_ACTIONS_FLAG();
flag.fFailureActionsOnNonCrashFailures = true;
lpFlagInfo = Marshal.AllocHGlobal(Marshal.SizeOf(flag));
if (lpFlagInfo == IntPtr.Zero)
{
throw new TopshelfException("Failed to allocate memory for failure flag");
}
Marshal.StructureToPtr(flag, lpFlagInfo, false);
try
{
NativeMethods.ChangeServiceConfig2(serviceHandle,
NativeMethods.SERVICE_CONFIG_FAILURE_ACTIONS_FLAG, lpFlagInfo);
}
catch
{
// this fails on XP, but we don't care really as it's optional
}
}
}
finally
{
if (lpFlagInfo != IntPtr.Zero)
{
Marshal.FreeHGlobal(lpFlagInfo);
}
if (lpInfo != IntPtr.Zero)
{
Marshal.FreeHGlobal(lpInfo);
}
if (lpsaActions != IntPtr.Zero)
{
Marshal.FreeHGlobal(lpsaActions);
}
if (serviceHandle != null)
{
NativeMethods.CloseServiceHandle(serviceHandle);
}
if (scmHandle != null)
{
NativeMethods.CloseServiceHandle(scmHandle);
}
}
}