Source code of Windows XP (NT5)
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/******************************************************************************
Copyright(c) Microsoft Corporation
Module Name:
ScheduledTasks.cpp
Abstract:
This module initialises the OLE library,Interfaces, & reads the input data
from the command line.This module calls the appropriate functions for acheiving
the functionality of different options.
Author:
Raghu B 10-Sep-2000
Revision History:
Raghu B 10-Sep-2000 : Created it
G.Surender Reddy 25-sep-2000 : Modified it
[ Added error checking ]
G.Surender Reddy 10-oct-2000 : Modified it
[ Moved the strings to Resource table ]
Venu Gopal Choudary 01-Mar-2001 : Modified it
[ Added -change option]
Venu Gopal Choudary 12-Mar-2001 : Modified it
[ Added -run and -end options]
******************************************************************************/
//common header files needed for this file
#include "pch.h"
#include "CommonHeaderFiles.h"
//Helper functions used internally from this file
HRESULT Init( ITaskScheduler **pITaskScheduler );
VOID displayMainUsage();
BOOL preProcessOptions( DWORD argc, LPCTSTR argv[], PBOOL pbUsage, PBOOL pbCreate,
PBOOL pbQuery, PBOOL pbDelete, PBOOL pbChange, PBOOL pbRun, PBOOL pbEnd, PBOOL pbDefVal );
/******************************************************************************
Routine Description:
This function process the options specified in the command line & routes to
different appropriate options [-create,-query,-delete,-change,-run,-end]
handling functions.This is the MAIN entry point for this utility.
Arguments:
[ in ] argc : The count of arguments specified in the command line
[ in ] argv : Array of command line arguments
Return Value :
A DWORD value indicating EXIT_SUCCESS on success else
EXIT_FAILURE on failure
******************************************************************************/
DWORD _cdecl
_tmain( DWORD argc, LPCTSTR argv[] )
{
// Declaring the main option switches as boolean values
BOOL bUsage = FALSE;
BOOL bCreate = FALSE;
BOOL bQuery = FALSE;
BOOL bDelete = FALSE;
BOOL bChange = FALSE;
BOOL bRun = FALSE;
BOOL bEnd = FALSE;
BOOL bDefVal = FALSE;
DWORD dwRetStatus = EXIT_SUCCESS;
HRESULT hr = S_OK;
// Call the preProcessOptions function to find out the option selected by the user
BOOL bValue = preProcessOptions( argc , argv , &bUsage , &bCreate , &bQuery , &bDelete ,
&bChange , &bRun , &bEnd , &bDefVal );
if(bValue == FALSE)
{
ReleaseGlobals();
return EXIT_FAILURE;
}
// If ScheduledTasks.exe /?
if( bUsage && ( bCreate + bQuery + bDelete + bChange + bRun + bEnd ) == 0 )
{
displayMainUsage();
ReleaseGlobals();
return EXIT_SUCCESS;
}
// If ScheduledTasks.exe -create option is selected
if( bCreate == TRUE)
{
hr = CreateScheduledTask( argc, argv );
ReleaseGlobals();
if ( FAILED(hr) )
{
return EXIT_FAILURE;
}
else
{
return EXIT_SUCCESS;
}
}
// If ScheduledTasks.exe -Query option is selected
if( bQuery == TRUE )
{
dwRetStatus = QueryScheduledTasks( argc, argv );
ReleaseGlobals();
return dwRetStatus;
}
// If ScheduledTasks.exe -delete option is selected
if( bDelete == TRUE)
{
dwRetStatus = DeleteScheduledTask( argc, argv );
ReleaseGlobals();
return dwRetStatus;
}
// If ScheduledTasks.exe -change option is selected
if( bChange == TRUE)
{
dwRetStatus = ChangeScheduledTaskParams( argc, argv );
ReleaseGlobals();
return dwRetStatus;
}
// If ScheduledTasks.exe -run option is selected
if( bRun == TRUE)
{
dwRetStatus = RunScheduledTask( argc, argv );
ReleaseGlobals();
return dwRetStatus;
}
// If ScheduledTasks.exe -end option is selected
if( bEnd == TRUE)
{
dwRetStatus = TerminateScheduledTask( argc, argv );
ReleaseGlobals();
return dwRetStatus;
}
// If ScheduledTasks.exe option is selected
if( bDefVal == TRUE )
{
dwRetStatus = QueryScheduledTasks( argc, argv );
ReleaseGlobals();
return dwRetStatus;
}
ReleaseGlobals();
return dwRetStatus;
}
/******************************************************************************
Routine Description:
This function process the options specified in the command line & routes to
different appropriate functions.
Arguments:
[ in ] argc : The count of arguments specified in the command line
[ in ] argv : Array of command line arguments
[ out ] pbUsage : pointer to flag for determining [usage] -? option
[ out ] pbCreate : pointer to flag for determining -create option
[ out ] pbQuery : pointer to flag for determining -query option
[ out ] pbDelete : pointer to flag for determining -delete option
[ out ] pbChange : pointer to flag for determining -change option
[ out ] pbRun : pointer to flag for determining -run option
[ out ] pbEnd : pointer to flag for determining -end option
[ out ] pbDefVal : pointer to flag for determining default value
Return Value :
A BOOL value indicating TRUE on success else FALSE
******************************************************************************/
BOOL
preProcessOptions( DWORD argc, LPCTSTR argv[] , PBOOL pbUsage, PBOOL pbCreate,
PBOOL pbQuery, PBOOL pbDelete , PBOOL pbChange , PBOOL pbRun , PBOOL pbEnd , PBOOL pbDefVal )
{
BOOL bOthers = FALSE;
BOOL bParse = FALSE;
//fill in the TCMDPARSER array
TCMDPARSER cmdOptions[] = {
{
CMDOPTION_CREATE,
0,
OPTION_COUNT,
0,
pbCreate,
NULL_STRING,
NULL,
NULL
},
{
CMDOPTION_QUERY,
0,
OPTION_COUNT,
0,
pbQuery,
NULL_STRING,
NULL,
NULL
},
{
CMDOPTION_DELETE,
0,
OPTION_COUNT,
0,
pbDelete,
NULL_STRING,
NULL,
NULL
},
{
CMDOPTION_USAGE,
CP_USAGE ,
OPTION_COUNT,
0,
pbUsage,
NULL_STRING,
NULL,
NULL
},
{
CMDOPTION_CHANGE,
0,
OPTION_COUNT,
0,
pbChange,
NULL_STRING,
NULL,
NULL
},
{
CMDOPTION_RUN,
0,
OPTION_COUNT,
0,
pbRun,
NULL_STRING,
NULL,
NULL
},
{
CMDOPTION_END,
0,
OPTION_COUNT,
0,
pbEnd,
NULL_STRING,
NULL,
NULL
},
{
CMDOTHEROPTIONS,
CP_DEFAULT,
0,
0,
&bOthers,
NULL_STRING,
NULL,
NULL
}
};
//if there is an error display app. error message
if (( ( DoParseParam( argc, argv,SIZE_OF_ARRAY(cmdOptions), cmdOptions ) == FALSE ) &&
( bParse = TRUE ) ) ||
((*pbCreate + *pbQuery + *pbDelete + *pbChange + *pbRun + *pbEnd)> 1 ) ||
( *pbUsage && bOthers ) ||
(( *pbCreate + *pbQuery + *pbDelete + *pbChange + *pbRun + *pbEnd + *pbUsage ) == 0 )
)
{
if ( bParse == TRUE )
{
DISPLAY_MESSAGE( stderr, GetResString(IDS_LOGTYPE_ERROR ));
DISPLAY_MESSAGE( stderr, GetReason() );
return FALSE;
}
else if ( ( *pbCreate + *pbQuery + *pbDelete + *pbChange + *pbRun + *pbEnd + *pbUsage ) > 1 )
{
DISPLAY_MESSAGE( stderr, GetResString(IDS_RES_ERROR ));
return FALSE;
}
else if( *pbCreate == TRUE )
{
DISPLAY_MESSAGE(stderr, GetResString(IDS_CREATE_USAGE));
return FALSE;
}
else if( *pbQuery == TRUE )
{
DISPLAY_MESSAGE(stderr, GetResString(IDS_QUERY_USAGE));
return FALSE;
}
else if( *pbDelete == TRUE )
{
DISPLAY_MESSAGE(stderr, GetResString(IDS_DELETE_SYNERROR));
return FALSE;
}
else if( *pbChange == TRUE )
{
DISPLAY_MESSAGE(stderr, GetResString(IDS_CHANGE_SYNERROR));
return FALSE;
}
else if( *pbRun == TRUE )
{
DISPLAY_MESSAGE(stderr, GetResString(IDS_RUN_SYNERROR));
return FALSE;
}
else if( *pbEnd == TRUE )
{
DISPLAY_MESSAGE(stderr, GetResString(IDS_END_SYNERROR));
return FALSE;
}
else if( ( *pbUsage && bOthers ) || ( !( *pbQuery ) && ( bOthers ) ) )
{
DISPLAY_MESSAGE( stderr, GetResString(IDS_RES_ERROR ));
return FALSE;
}
else
{
*pbDefVal = TRUE;
}
}
return TRUE;
}
/******************************************************************************
Routine Description:
This function fetches the ITaskScheduler Interface.It also connects to
the remote machine if specified & helps to operate
ITaskScheduler on the specified target m/c.
Arguments:
[ in ] szServer : server's name
Return Value :
ITaskScheduler interface pointer on success else NULL
******************************************************************************/
ITaskScheduler*
GetTaskScheduler( LPCTSTR szServer )
{
HRESULT hr = S_OK;
ITaskScheduler *pITaskScheduler = NULL;
WCHAR wszComputerName[ MAX_RES_STRING ] = NULL_U_STRING;
WCHAR wszActualComputerName[ 2 * MAX_RES_STRING ] = DOMAIN_U_STRING;
wchar_t* pwsz = NULL_U_STRING;
WORD wSlashCount = 0 ;
hr = Init( &pITaskScheduler );
if( FAILED(hr))
{
DisplayErrorMsg(hr);
return NULL;
}
//If the operation is on remote machine
if( lstrlen(szServer) > 0 )
{
// Convert the server name specified by the user to wide char or unicode format
if ( GetAsUnicodeString(szServer,wszComputerName, SIZE_OF_ARRAY(wszComputerName)) == NULL )
{
return NULL;
}
if( wszComputerName != NULL )
{
pwsz = wszComputerName;
while ( ( *pwsz != NULL_U_CHAR ) && ( *pwsz == BACK_SLASH_U ) )
{
pwsz = _wcsinc(pwsz);
wSlashCount++;
}
if( (wSlashCount == 2 ) ) // two back slashes are present
{
wcscpy( wszActualComputerName, wszComputerName );
}
else if ( wSlashCount == 0 )
{
//Append "\\" to computer name
wcscat(wszActualComputerName,wszComputerName);
}
else
{
DISPLAY_MESSAGE (stderr, GetResString ( IDS_INVALID_NET_ADDRESS ));
return NULL;
}
}
hr = pITaskScheduler->SetTargetComputer( wszActualComputerName );
}
else
{
//Local Machine
hr = pITaskScheduler->SetTargetComputer( NULL );
}
if( FAILED( hr ) )
{
DisplayErrorMsg(hr);
return NULL;
}
return pITaskScheduler;
}
/******************************************************************************
Routine Description:
This function initialises the COM library & fetches the ITaskScheduler interface.
Arguments:
[ in ] pITaskScheduler : double pointer to taskscheduler interface
Return Value:
A HRESULT value indicating success code else failure code
******************************************************************************/
HRESULT
Init( ITaskScheduler **pITaskScheduler )
{
// Initalize the HRESULT value.
HRESULT hr = S_OK;
// Bring in the library
hr = CoInitializeEx( NULL , COINIT_APARTMENTTHREADED );
if (FAILED(hr))
{
return hr;
}
hr = CoInitializeSecurity(NULL, -1, NULL, NULL,
RPC_C_AUTHN_LEVEL_NONE,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL, EOAC_NONE, 0 );
if (FAILED(hr))
{
CoUninitialize();
return hr;
}
// Create the pointer to Task Scheduler object
// CLSID from the header file mstask.h
// Fill the task schdeuler object.
hr = CoCreateInstance( CLSID_CTaskScheduler, NULL, CLSCTX_ALL,
IID_ITaskScheduler,(LPVOID*) pITaskScheduler );
// Should we fail, unload the library
if (FAILED(hr))
{
CoUninitialize();
}
return hr;
}
/******************************************************************************
Routine Description:
This function releases the ITaskScheduler & unloads the COM library
Arguments:
[ in ] pITaskScheduler : pointer to the ITaskScheduler
Return Value :
VOID
******************************************************************************/
VOID
Cleanup( ITaskScheduler *pITaskScheduler )
{
if (pITaskScheduler)
{
pITaskScheduler->Release();
}
// Unload the library, now that our pointer is freed.
CoUninitialize();
return;
}
/******************************************************************************
Routine Description:
This function displays the main usage help of this utility
Arguments:
None
Return Value :
VOID
******************************************************************************/
VOID
displayMainUsage()
{
DisplayUsage( IDS_MAINHLP1, IDS_MAINHLP21);
return;
}
/******************************************************************************
Routine Description:
This function deletes the .job extension from the task name
Arguments:
[ in ] lpszTaskName : Task name
Return Value :
None
******************************************************************************/
DWORD
ParseTaskName( LPTSTR lpszTaskName )
{
if(lpszTaskName == NULL)
return ERROR_INVALID_PARAMETER;
// Remove the .Job extension from the task name
lpszTaskName[lstrlen(lpszTaskName ) - lstrlen(JOB) ] = NULL_CHAR;
return EXIT_SUCCESS;
}
/******************************************************************************
Routine Description:
This function displays the appropriate error message w.r.t HRESULT value
Arguments:
[ in ] hr : An HRESULT value
Return Value :
VOID
******************************************************************************/
VOID
DisplayErrorMsg(HRESULT hr)
{
TCHAR szErrorDesc[ MAX_RES_STRING ] = NULL_STRING;
TCHAR szErrorString[ 2*MAX_RES_STRING ] = NULL_STRING;
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, hr,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
szErrorDesc,SIZE_OF_ARRAY(szErrorDesc), NULL);
//Append ERROR: string in front of the actual error message
lstrcpy( szErrorString, GetResString(IDS_ERROR_STRING) );
lstrcat( szErrorString,szErrorDesc );
DISPLAY_MESSAGE( stderr, szErrorString );
return;
}
/******************************************************************************
Routine Description:
This function displays the messages for usage of different option
Arguments:
[ in ] StartingMessage : First string to display
[ in ] EndingMessage : Last string to display
Return Value :
DWORD
******************************************************************************/
DWORD DisplayUsage( ULONG StartingMessage, ULONG EndingMessage )
{
ULONG ulCounter = 0;
LPCTSTR lpszCurrentString = NULL;
for( ulCounter = StartingMessage; ulCounter <= EndingMessage; ulCounter++ )
{
lpszCurrentString = GetResString( ulCounter );
if( lpszCurrentString != NULL )
{
DISPLAY_MESSAGE( stdout, lpszCurrentString );
}
else
{
return ERROR_INVALID_PARAMETER;
}
}
return ERROR_SUCCESS;
}