/// <summary>
/// This method stops a given service and deletes it. The SCM handle passed must have standard rights.
/// It handles the case of service not being in started mode.
/// </summary>
/// <param name="hSCManager">Handle to SCM with standard rights</param>
/// <param name="svcName">Name of the service to be deleted</param>
public static ServiceDeleteStatus StopAndRemoveService(IntPtr hSCManager, string svcName)
{
AppAssert.Assert(NativeMethods.NullIntPtr != hSCManager, "Invalid SC Manager handle!");
AppAssert.Assert(null != svcName, "Null service name passed!");
//return success if the service doesn't exist
if (ServiceConfigurationHandler.CheckServiceExists(hSCManager, svcName) == false)
{
return(ServiceDeleteStatus.ServiceDeleteSuccess);
}
// stop and delete the service
try
{
//stop the service
ServiceConfigurationHandler.StopService(svcName);
ServiceConfigurationHandler.DeleteService(hSCManager, svcName);//throws ServiceConfigurationException if delete failed
}
catch
{
return(ServiceDeleteStatus.ServiceDeleteFailed);
}
//state: Delete succeeded
return(ServiceDeleteStatus.ServiceDeleteSuccess);
}
private static bool RemoveService(IntPtr hSCManager, string serviceName)
{
ServiceDeleteStatus status = ServiceConfigurationHandler.StopAndRemoveService(hSCManager, serviceName);
bool isRemoved = true;
switch (status)
{
case ServiceDeleteStatus.ServiceDeleteFailed:
{
isRemoved = false;
break;
}
case ServiceDeleteStatus.ServiceDeleteSuccess:
{
isRemoved = true;
break;
}
default:
{
AppAssert.Assert(false, "Unexpected ServiceDeleteStatus returned");
isRemoved = false;
break;
}
}
return(isRemoved);
}
/// <summary>
/// Sets the failure actions for the specified service
/// </summary>
/// <param name="serviceName"></param>
/// <param name="sfa"></param>
internal static void SetFailureActions(string serviceName, ref NativeMethods.SERVICE_FAILURE_ACTIONS sfa)
{
AppAssert.Assert(null != serviceName, "Null service name passed!");
IntPtr lockHandle = NativeMethods.NullIntPtr;
IntPtr scmHandle = NativeMethods.NullIntPtr;
IntPtr svcHandle = NativeMethods.NullIntPtr;
try
{
scmHandle = ServiceConfigurationHandler.GetSCMHandle();
//lock the database
lockHandle = RepeatLockServiceDatabase(scmHandle);
if (NativeMethods.NullIntPtr.Equals(lockHandle))
{
SetupLogger.LogError("BackEnd.Configure: Got back NULL service handle!");
int lastWin32Error = System.Runtime.InteropServices.Marshal.GetLastWin32Error();
throw new Exception(String.Format("Setup was unable to configure service {0}", serviceName));
}
svcHandle = NativeMethods.OpenService(
scmHandle,
serviceName,
NativeMethods.SERVICE_CHANGE_CONFIG | NativeMethods.SERVICE_START);//since we set restart as a failure option, the handle should have SERVICE_START rights
if (NativeMethods.NullIntPtr.Equals(svcHandle))
{
//throw exception here
SetupLogger.LogInfo("BackEnd.Configure: Got back NULL service handle!");
int lastWin32Error = System.Runtime.InteropServices.Marshal.GetLastWin32Error();
throw new Exception(String.Format("Setup was unable to configure service {0}", serviceName));
}
SetupLogger.LogInfo("BackEnd.Configure: Successfully opened {0} service", serviceName);
bool success = NativeMethods.ChangeServiceConfig2(svcHandle, NativeMethods.SERVICE_CONFIG_FAILURE_ACTIONS, ref sfa);
if (!success)
{
SetupLogger.LogInfo("BackEnd.Configure: Couldn't modify service description!");
int lastWin32Error = System.Runtime.InteropServices.Marshal.GetLastWin32Error();
throw new Exception(String.Format("Setup was unable to configure service {0}", serviceName));
}
}
finally
{
if (!NativeMethods.NullIntPtr.Equals(lockHandle))
{
NativeMethods.UnlockServiceDatabase(lockHandle);
}
if (!NativeMethods.NullIntPtr.Equals(svcHandle))
{
NativeMethods.CloseServiceHandle(svcHandle);
}
if (!NativeMethods.NullIntPtr.Equals(scmHandle))
{
NativeMethods.CloseServiceHandle(scmHandle);
}
}
}
public static void StopAndDisableService(IntPtr hSCManager, string svcName)
{
ServiceConfigurationHandler.StopService(svcName);
int returnCode = SetServiceStatus(hSCManager, svcName, NativeMethods.SERVICE_DISABLED);
if (returnCode != 0)
{
throw new Exception(String.Format("Cannot stop the {0} service", svcName));
}
}
public static void StopAndDisableService(string serviceName)
{
IntPtr hSCManager = NativeMethods.NullIntPtr;
try
{
hSCManager = ServiceConfigurationHandler.GetSCMHandle();
ServiceConfigurationHandler.StopAndDisableService(hSCManager, serviceName);
}
finally
{
if (!NativeMethods.NullIntPtr.Equals(hSCManager))
{
NativeMethods.CloseServiceHandle(hSCManager);
}
}
}
public static bool RemoveService(string serviceName)
{
bool isRemoved = true;
IntPtr hSCManager = NativeMethods.NullIntPtr;
try
{
hSCManager = ServiceConfigurationHandler.GetSCMHandle();
isRemoved = ServiceConfigurationHandler.RemoveService(hSCManager, serviceName);
}
catch
{
isRemoved = false;
}
finally
{
if (!NativeMethods.NullIntPtr.Equals(hSCManager))
{
NativeMethods.CloseServiceHandle(hSCManager);
}
}
return(isRemoved);
}
/// <summary>
/// Create the engine service and start it
/// </summary>
public static void ConfigureCMPWorkerService(ServiceConfigurationHandler serviceConfigurationHandler)
{
AppAssert.AssertNotNull(serviceConfigurationHandler, "serviceConfigurationHandler");
string installPath = SetupConstants.GetServerInstallPath();
//attempt to remove services first.
//this will ignore errors of service does not exist and service marked for deletion
//If service is marked for deletion, then exception will be thrown at create time as
//we will be unable to create the service.
//reason:
//1. Keeps the code path of Install and Repair same
//2. Handles corner case of service already existing in Install mode
//3. Repairs the configuration of the service if broken
IntPtr hSCManager = NativeMethods.NullIntPtr;
IntPtr password = NativeMethods.NullIntPtr;
try
{
hSCManager = ServiceConfigurationHandler.GetSCMHandle();
//TODO: Handle rollback if exception is thrown
ServiceConfigurationHandler.StopAndRemoveService(hSCManager, SetupConstants.EngineServiceName);
//construct paths to service binaries
string servicePathEngine = PathHelper.QuoteString(installPath + @"MSIT\CmpWorkerService\" + SetupConstants.EngineServiceBinary);
SetupLogger.LogInfo("BackEnd.Configure: Engine Service path is : {0}", servicePathEngine);
//Get account
string userAccountName = null;
bool runasLocalAccount = SetupInputs.Instance.FindItem(SetupInputTags.CmpServiceLocalAccountTag);
if (!runasLocalAccount)
{
userAccountName = UserAccountHelper.GetVmmServiceDomainAccount();
password = Marshal.SecureStringToGlobalAllocUnicode(SetupInputs.Instance.FindItem(SetupInputTags.CmpServiceUserPasswordTag));
}
//create engine service
ServiceConfigurationHandler.CreateService(
hSCManager,
SetupConstants.EngineServiceName,
Resources.EngineServiceDisplayName,
Resources.EngineServiceDescription,
servicePathEngine,
null, // dependent services
userAccountName,
password: password,
autoStart: true,
interactive: false);
//set failure actions for VMMService
NativeMethods.SERVICE_FAILURE_ACTIONS sfa = new NativeMethods.SERVICE_FAILURE_ACTIONS();
NativeMethods.SC_ACTION[] sca = new NativeMethods.SC_ACTION[SetupConstants.ServiceActionsCount + 1];
for (int i = 0; i < SetupConstants.ServiceActionsCount; i++)
{
sca[i].Delay = SetupConstants.ServiceRestartDelay;
sca[i].Type = NativeMethods.SC_ACTION_TYPE.SC_ACTION_RESTART;
}
sca[SetupConstants.ServiceActionsCount].Delay = 0;
sca[SetupConstants.ServiceActionsCount].Type = NativeMethods.SC_ACTION_TYPE.SC_ACTION_NONE;
IntPtr unmanagedStructArray = NativeMethods.NullIntPtr;
try
{
unmanagedStructArray = GetUnmanagedStructArray(sca);
sfa.sc_Action = unmanagedStructArray;
sfa.cActions = SetupConstants.ServiceActionsCount + 1;
sfa.dwResetPeriod = SetupConstants.ServiceResetPeriod;
sfa.lpCommand = null;
sfa.lpRebootMsg = null;
//set service failure actions for engine service
ServiceConfigurationHandler.SetFailureActions(SetupConstants.EngineServiceName, ref sfa);
//ConfigurationProgressEvent(this, new EventArgs());
}
finally
{
if (NativeMethods.NullIntPtr != unmanagedStructArray)
{
Marshal.FreeHGlobal(unmanagedStructArray);
}
}
}
finally
{
if (!NativeMethods.NullIntPtr.Equals(hSCManager))
{
NativeMethods.CloseServiceHandle(hSCManager);
}
if (!NativeMethods.NullIntPtr.Equals(password))
{
Marshal.ZeroFreeGlobalAllocUnicode(password);
}
}
}
