Contoh Pemicu Masuk (C++)
Contoh C++ ini menunjukkan cara membuat tugas yang dijadwalkan untuk menjalankan Notepad saat pengguna masuk. Tugas berisi pemicu masuk yang menentukan batas awal untuk tugas yang akan dimulai dan pengidentifikasi pengguna yang menentukan pengguna. Tugas didaftarkan menggunakan grup Administrator sebagai konteks keamanan untuk menjalankan tugas.
Prosedur berikut menjelaskan cara menjadwalkan tugas untuk memulai executable saat pengguna masuk.
Untuk menjadwalkan Notepad untuk memulai saat pengguna masuk
Inisialisasi COM dan atur keamanan COM umum.
Buat objek ITaskService .
Objek ini memungkinkan Anda membuat tugas dalam folder tertentu.
Dapatkan folder tugas untuk membuat tugas.
Gunakan metode ITaskService::GetFolder untuk mendapatkan folder, dan metode ITaskService::NewTask untuk membuat objek ITaskDefinition .
Tentukan informasi tentang tugas menggunakan objek ITaskDefinition , seperti informasi pendaftaran untuk tugas tersebut.
Gunakan properti RegistrationInfo dari ITaskDefinition dan properti lain dari antarmuka ITaskDefinition untuk menentukan informasi tugas.
Buat pemicu masuk menggunakan properti Pemicu ITaskDefinition untuk mengakses antarmuka ITriggerCollection untuk tugas tersebut.
Gunakan metode ITriggerCollection::Create untuk menentukan bahwa Anda ingin membuat pemicu masuk. Anda dapat mengatur batas awal dan properti UserId untuk pemicu sehingga tindakan tugas akan dijadwalkan untuk dijalankan saat pengguna masuk setelah batas mulai.
Buat tindakan untuk tugas yang akan dijalankan dengan menggunakan properti Tindakan ITaskDefinition untuk mengakses antarmuka IActionCollection untuk tugas tersebut. Gunakan metode IActionCollection::Create untuk menentukan jenis tindakan yang ingin Anda buat. Contoh ini menggunakan objek IExecAction , yang mewakili tindakan yang menjalankan operasi baris perintah.
Daftarkan tugas menggunakan metode ITaskFolder::RegisterTaskDefinition .
Contoh C++ berikut menunjukkan cara menjadwalkan tugas untuk menjalankan Notepad saat pengguna masuk.
/**********************************************************************
This sample schedules a task to start notepad.exe when a user logs on.
**********************************************************************/
#define _WIN32_DCOM
#include <windows.h>
#include <iostream>
#include <stdio.h>
#include <comdef.h>
// Include the task header file.
#include <taskschd.h>
#pragma comment(lib, "taskschd.lib")
#pragma comment(lib, "comsupp.lib")
using namespace std;
int __cdecl wmain()
{
// ------------------------------------------------------
// Initialize COM.
HRESULT hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
if( FAILED(hr) )
{
printf("\nCoInitializeEx failed: %x", hr );
return 1;
}
// Set general COM security levels.
hr = CoInitializeSecurity(
NULL,
-1,
NULL,
NULL,
RPC_C_AUTHN_LEVEL_PKT_PRIVACY,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL,
0,
NULL);
if( FAILED(hr) )
{
printf("\nCoInitializeSecurity failed: %x", hr );
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Create a name for the task.
LPCWSTR wszTaskName = L"Logon Trigger Test Task";
// Get the windows directory and set the path to notepad.exe.
wstring wstrExecutablePath = _wgetenv( L"WINDIR");
wstrExecutablePath += L"\\SYSTEM32\\NOTEPAD.EXE";
// ------------------------------------------------------
// Create an instance of the Task Service.
ITaskService *pService = NULL;
hr = CoCreateInstance( CLSID_TaskScheduler,
NULL,
CLSCTX_INPROC_SERVER,
IID_ITaskService,
(void**)&pService );
if (FAILED(hr))
{
printf("Failed to create an instance of ITaskService: %x", hr);
CoUninitialize();
return 1;
}
// Connect to the task service.
hr = pService->Connect(_variant_t(), _variant_t(),
_variant_t(), _variant_t());
if( FAILED(hr) )
{
printf("ITaskService::Connect failed: %x", hr );
pService->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Get the pointer to the root task folder. This folder will hold the
// new task that is registered.
ITaskFolder *pRootFolder = NULL;
hr = pService->GetFolder( _bstr_t( L"\\") , &pRootFolder );
if( FAILED(hr) )
{
printf("Cannot get Root Folder pointer: %x", hr );
pService->Release();
CoUninitialize();
return 1;
}
// If the same task exists, remove it.
pRootFolder->DeleteTask( _bstr_t( wszTaskName), 0 );
// Create the task builder object to create the task.
ITaskDefinition *pTask = NULL;
hr = pService->NewTask( 0, &pTask );
pService->Release(); // COM clean up. Pointer is no longer used.
if (FAILED(hr))
{
printf("Failed to create a task definition: %x", hr);
pRootFolder->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Get the registration info for setting the identification.
IRegistrationInfo *pRegInfo= NULL;
hr = pTask->get_RegistrationInfo( &pRegInfo );
if( FAILED(hr) )
{
printf("\nCannot get identification pointer: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
hr = pRegInfo->put_Author(L"Author Name");
pRegInfo->Release();
if( FAILED(hr) )
{
printf("\nCannot put identification info: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Create the settings for the task
ITaskSettings *pSettings = NULL;
hr = pTask->get_Settings( &pSettings );
if( FAILED(hr) )
{
printf("\nCannot get settings pointer: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// Set setting values for the task.
hr = pSettings->put_StartWhenAvailable(VARIANT_TRUE);
pSettings->Release();
if( FAILED(hr) )
{
printf("\nCannot put setting info: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Get the trigger collection to insert the logon trigger.
ITriggerCollection *pTriggerCollection = NULL;
hr = pTask->get_Triggers( &pTriggerCollection );
if( FAILED(hr) )
{
printf("\nCannot get trigger collection: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// Add the logon trigger to the task.
ITrigger *pTrigger = NULL;
hr = pTriggerCollection->Create( TASK_TRIGGER_LOGON, &pTrigger );
pTriggerCollection->Release();
if( FAILED(hr) )
{
printf("\nCannot create the trigger: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
ILogonTrigger *pLogonTrigger = NULL;
hr = pTrigger->QueryInterface(
IID_ILogonTrigger, (void**) &pLogonTrigger );
pTrigger->Release();
if( FAILED(hr) )
{
printf("\nQueryInterface call failed for ILogonTrigger: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
hr = pLogonTrigger->put_Id( _bstr_t( L"Trigger1" ) );
if( FAILED(hr) )
printf("\nCannot put the trigger ID: %x", hr);
// Set the task to start at a certain time. The time
// format should be YYYY-MM-DDTHH:MM:SS(+-)(timezone).
// For example, the start boundary below
// is January 1st 2005 at 12:05
hr = pLogonTrigger->put_StartBoundary( _bstr_t(L"2005-01-01T12:05:00") );
if( FAILED(hr) )
printf("\nCannot put the start boundary: %x", hr);
hr = pLogonTrigger->put_EndBoundary( _bstr_t(L"2015-05-02T08:00:00") );
if( FAILED(hr) )
printf("\nCannot put the end boundary: %x", hr);
// Define the user. The task will execute when the user logs on.
// The specified user must be a user on this computer.
hr = pLogonTrigger->put_UserId( _bstr_t( L"DOMAIN\\UserName" ) );
pLogonTrigger->Release();
if( FAILED(hr) )
{
printf("\nCannot add user ID to logon trigger: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Add an Action to the task. This task will execute notepad.exe.
IActionCollection *pActionCollection = NULL;
// Get the task action collection pointer.
hr = pTask->get_Actions( &pActionCollection );
if( FAILED(hr) )
{
printf("\nCannot get Task collection pointer: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// Create the action, specifying that it is an executable action.
IAction *pAction = NULL;
hr = pActionCollection->Create( TASK_ACTION_EXEC, &pAction );
pActionCollection->Release();
if( FAILED(hr) )
{
printf("\nCannot create the action: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
IExecAction *pExecAction = NULL;
// QI for the executable task pointer.
hr = pAction->QueryInterface(
IID_IExecAction, (void**) &pExecAction );
pAction->Release();
if( FAILED(hr) )
{
printf("\nQueryInterface call failed for IExecAction: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// Set the path of the executable to notepad.exe.
hr = pExecAction->put_Path( _bstr_t( wstrExecutablePath.c_str() ) );
pExecAction->Release();
if( FAILED(hr) )
{
printf("\nCannot set path of executable: %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
// ------------------------------------------------------
// Save the task in the root folder.
IRegisteredTask *pRegisteredTask = NULL;
hr = pRootFolder->RegisterTaskDefinition(
_bstr_t( wszTaskName ),
pTask,
TASK_CREATE_OR_UPDATE,
_variant_t(L"S-1-5-32-544"),
_variant_t(),
TASK_LOGON_GROUP,
_variant_t(L""),
&pRegisteredTask);
if( FAILED(hr) )
{
printf("\nError saving the Task : %x", hr );
pRootFolder->Release();
pTask->Release();
CoUninitialize();
return 1;
}
printf("\n Success! Task successfully registered. " );
// Clean up
pRootFolder->Release();
pTask->Release();
pRegisteredTask->Release();
CoUninitialize();
return 0;
}
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