BOOL CNTScmService::EnumDependents(DWORD dwServiceState, void* pUserData, ENUM_SERVICES_PROC lpEnumServicesFunc) const
{
//Validate our parameters
ATLASSUME(m_hService != NULL);
DWORD dwBytesNeeded;
DWORD dwServices;
BOOL bSuccess = EnumDependentServices(m_hService, dwServiceState, NULL, 0, &dwBytesNeeded, &dwServices);
DWORD dwLastError = GetLastError();
if (!bSuccess && (dwLastError == ERROR_MORE_DATA) || (dwLastError == ERROR_INSUFFICIENT_BUFFER)) //Note we use ERROR_INSUFFICIENT_BUFFER here even though it is not documented as a legal return value from EnumDependentServices here
{
//Allocate some memory for the API
ATL::CHeapPtr<ENUM_SERVICE_STATUS> lpServices;
if (!lpServices.AllocateBytes(dwBytesNeeded))
{
SetLastError(ERROR_OUTOFMEMORY);
return FALSE;
}
DWORD dwSize;
bSuccess = EnumDependentServices(m_hService, dwServiceState, lpServices.m_pData, dwBytesNeeded, &dwSize, &dwServices);
if (bSuccess)
{
BOOL bContinue = TRUE;
for (DWORD i=0; i<dwServices && bContinue; i++)
bContinue = lpEnumServicesFunc(pUserData, lpServices[i]);
}
}
return bSuccess;
}
LPENUM_SERVICE_STATUS EsEnumDependentServices(
__in SC_HANDLE ServiceHandle,
__in_opt ULONG State,
__out PULONG Count
)
{
LOGICAL result;
PVOID buffer;
ULONG bufferSize;
ULONG returnLength;
ULONG servicesReturned;
if (!State)
State = SERVICE_STATE_ALL;
bufferSize = 0x800;
buffer = PhAllocate(bufferSize);
if (!(result = EnumDependentServices(
ServiceHandle,
State,
buffer,
bufferSize,
&returnLength,
&servicesReturned
)))
{
if (GetLastError() == ERROR_MORE_DATA)
{
PhFree(buffer);
bufferSize = returnLength;
buffer = PhAllocate(bufferSize);
result = EnumDependentServices(
ServiceHandle,
State,
buffer,
bufferSize,
&returnLength,
&servicesReturned
);
}
if (!result)
{
PhFree(buffer);
return NULL;
}
}
*Count = servicesReturned;
return buffer;
}
void
CUtils::DealWithDependentServices(const char *szServiceName, const unsigned int iRequest)
{
DWORD dwBytes = 0;
DWORD dwNumServices = 0;
DWORD dwResumeHandle = 0;
ENUM_SERVICE_STATUS status[100];
// service may have dependent services so stop them first
SC_HANDLE hService = OpenService(hSCM, szServiceName, SERVICE_ENUMERATE_DEPENDENTS);
if (hService)
{
if (EnumDependentServices(hService,
SERVICE_ACTIVE,
(ENUM_SERVICE_STATUS *)status, // returned info
100 * sizeof(ENUM_SERVICE_STATUS), // length of buffer
&dwBytes, // returned length
&dwNumServices)) // number services returned
{
for (DWORD i=0;i<dwNumServices;i++)
{
// recurse until we stop the last dependant
ServiceRequest(status[i].lpServiceName, iRequest);
}
}
CloseServiceHandle(hService);
// if there were dependents, allow some time register service stops
if (dwNumServices)
Sleep(2000);
}
else
_GetWindowsError();
}
BOOL
TV2_HasDependantServices(LPWSTR lpServiceName)
{
HANDLE hSCManager;
HANDLE hService;
DWORD dwBytesNeeded, dwCount;
BOOL bRet = FALSE;
hSCManager = OpenSCManagerW(NULL,
NULL,
SC_MANAGER_ALL_ACCESS);
if (hSCManager)
{
hService = OpenServiceW(hSCManager,
lpServiceName,
SERVICE_QUERY_STATUS | SERVICE_ENUMERATE_DEPENDENTS);
if (hService)
{
/* Does this have any dependencies? */
if (!EnumDependentServices(hService,
SERVICE_STATE_ALL,
NULL,
0,
&dwBytesNeeded,
&dwCount))
{
if (GetLastError() == ERROR_MORE_DATA)
{
/* It does, return TRUE */
bRet = TRUE;
}
}
CloseServiceHandle(hService);
}
CloseServiceHandle(hSCManager);
}
return bRet;
}
int MAIN( int argc, WINCHAR *argv[] )
{
SC_HANDLE hSCM, hService;
DWORD needed, returned;
LPENUM_SERVICE_STATUS pServices = NULL;
DWORD i;
if ( argc != 3 ) {
printf(TEXT("Usage: %s <server> <service>\n"), argv[0]);
exit( 1 );
}
printf(TEXT("Opening the Service Control Manager on %s..."), (LPTSTR)argv[1]);
if ( !(hSCM = OpenSCManager( (LPTSTR)argv[1], NULL, SC_MANAGER_ALL_ACCESS )) ) {
printf(TEXT("failed.\n"));
PrintLastError();
exit(1);
}
printf(TEXT("ok\n"));
printf(TEXT("Opening service \"%s\"..."), (LPTSTR)argv[2]);
if ( !(hService = OpenService( hSCM, (LPTSTR)argv[2], SERVICE_ALL_ACCESS )) ) {
printf(TEXT("failed.\n"));
PrintLastError();
CloseServiceHandle( hSCM );
exit(1);
}
printf(TEXT("ok\n"));
printf(TEXT("Enumerating dependent services...."));
needed = returned = 0;
if ( !EnumDependentServices( hService, SERVICE_ACTIVE, NULL, 0, &needed, &returned ) )
{
DWORD status;
DWORD bufsize;
status = GetLastError();
if ( status != ERROR_MORE_DATA )
{
printf(TEXT("failed.\n"));
printf(TEXT("error == %d\n"), status);
CloseServiceHandle( hSCM );
exit(1);
}
pServices = (LPENUM_SERVICE_STATUS)malloc(needed);
bufsize = needed;
if ( !EnumDependentServices( hService, SERVICE_ACTIVE, pServices, bufsize, &needed, &returned ) )
{
PrintLastError();
CloseServiceHandle( hSCM );
exit(1);
}
}
printf(TEXT("ok\n"));
if ( returned == 0 )
printf(TEXT("**no dependent services**\n"));
for (i=0; i<returned; i++) {
printf(TEXT("%s (%s)\n"), pServices[i].lpDisplayName, pServices[i].lpServiceName );
printf(TEXT("\ttype = 0x%x\n"), pServices[i].ServiceStatus.dwServiceType );
printf(TEXT("\tstate = 0x%x\n"), pServices[i].ServiceStatus.dwCurrentState );
printf(TEXT("\tcontrols accepted = 0x%x\n"), pServices[i].ServiceStatus.dwControlsAccepted );
printf(TEXT("\twin32 exit code = 0x%x\n"), pServices[i].ServiceStatus.dwWin32ExitCode );
printf(TEXT("\tsvc exit code = 0x%x\n"), pServices[i].ServiceStatus.dwServiceSpecificExitCode );
printf(TEXT("\tcheck point = 0x%x\n"), pServices[i].ServiceStatus.dwCheckPoint );
printf(TEXT("\twait hont = 0x%x\n"), pServices[i].ServiceStatus.dwWaitHint );
}
free( pServices );
printf(TEXT("Closing Service handles..."));
CloseServiceHandle( hSCM );
CloseServiceHandle( hService );
printf(TEXT("ok\n"));
exit(0);
}
/*
* DriverSetInfo
*
* Purpose:
*
* Sets registry info for selected driver object
*
*/
VOID DriverSetInfo(
PROP_OBJECT_INFO *Context,
HWND hwndDlg
)
{
BOOL cond = FALSE, bResult, fGroup, bRet;
INT nEndOfList, nEnd, nStart;
DWORD i, bytesNeeded, dwServices, dwGroups;
LPWSTR lpType;
SC_HANDLE SchSCManager;
SC_HANDLE schService;
LPENUM_SERVICE_STATUS lpDependencies = NULL;
LPQUERY_SERVICE_CONFIG psci;
LPSERVICE_DESCRIPTION psd;
SERVICE_STATUS_PROCESS ssp;
ENUM_SERVICE_STATUS ess;
WCHAR szBuffer[MAX_PATH + 1];
if (Context == NULL) {
ShowWindow(GetDlgItem(hwndDlg, IDC_QUERYFAIL), TRUE);
return;
}
__try {
ShowWindow(GetDlgItem(hwndDlg, IDC_QUERYFAIL), FALSE);
psci = NULL;
SchSCManager = NULL;
bResult = FALSE;
do {
SchSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_CONNECT | SC_MANAGER_ENUMERATE_SERVICE);
if (SchSCManager == NULL) {
break;
}
schService = OpenService(SchSCManager, Context->lpObjectName,
SERVICE_QUERY_CONFIG | SERVICE_QUERY_STATUS | SERVICE_ENUMERATE_DEPENDENTS);
if (schService == NULL) {
break;
}
bytesNeeded = 0;
bResult = QueryServiceConfig(schService, NULL, 0, &bytesNeeded);
if ((bResult == FALSE) && (bytesNeeded == 0)) {
break;
}
psci = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bytesNeeded);
if (psci == NULL) {
break;
}
//disable comboboxes
EnableWindow(GetDlgItem(hwndDlg, IDC_SERVICE_DEPENDENTSERVICES), FALSE);
EnableWindow(GetDlgItem(hwndDlg, IDC_SERVICE_DEPENDSONSERVICE), FALSE);
EnableWindow(GetDlgItem(hwndDlg, IDC_SERVICE_DEPENDSONGROUP), FALSE);
bResult = QueryServiceConfig(schService, psci, bytesNeeded, &bytesNeeded);
if (bResult) {
//set key name (identical to object name)
SetDlgItemText(hwndDlg, IDC_SERVICE_KEYNAME, Context->lpObjectName);
//set image path info
SetDlgItemText(hwndDlg, IDC_SERVICE_IMAGEPATH, psci->lpBinaryPathName);
//set display name
SetDlgItemText(hwndDlg, IDC_SERVICE_DISPLAYNAME, psci->lpDisplayName);
//set load order group
SetDlgItemText(hwndDlg, IDC_SERVICE_LOADORDERGROUP, psci->lpLoadOrderGroup);
//Service Type
lpType = T_UnknownType;
switch (psci->dwServiceType) {
case SERVICE_KERNEL_DRIVER:
lpType = L"Kernel-Mode Driver";
break;
case SERVICE_FILE_SYSTEM_DRIVER:
lpType = L"File System Driver";
break;
case SERVICE_ADAPTER:
lpType = L"Adapter";
break;
case SERVICE_RECOGNIZER_DRIVER:
lpType = L"File System Recognizer";
break;
case SERVICE_WIN32_OWN_PROCESS:
lpType = L"Own Process";
break;
case SERVICE_WIN32_SHARE_PROCESS:
lpType = L"Share Process";
break;
case (SERVICE_WIN32_OWN_PROCESS | SERVICE_INTERACTIVE_PROCESS):
lpType = L"Own Process (Interactive)";
SetDlgItemText(hwndDlg, ID_SERVICE_NAME, psci->lpServiceStartName);
break;
case (SERVICE_WIN32_SHARE_PROCESS | SERVICE_INTERACTIVE_PROCESS):
lpType = L"Share Process (Interactive)";
SetDlgItemText(hwndDlg, ID_SERVICE_NAME, psci->lpServiceStartName);
break;
}
SetDlgItemText(hwndDlg, ID_SERVICE_TYPE, lpType);
//Start Type
lpType = T_UnknownType;
switch (psci->dwStartType) {
case SERVICE_AUTO_START:
lpType = L"Auto";
break;
case SERVICE_BOOT_START:
lpType = L"Boot";
break;
case SERVICE_DEMAND_START:
lpType = L"On Demand";
break;
case SERVICE_DISABLED:
lpType = L"Disabled";
break;
case SERVICE_SYSTEM_START:
lpType = L"System";
break;
}
SetDlgItemText(hwndDlg, ID_SERVICE_START, lpType);
//Error Control
lpType = T_Unknown;
switch (psci->dwErrorControl) {
case SERVICE_ERROR_CRITICAL:
lpType = L"Critical";
break;
case SERVICE_ERROR_IGNORE:
lpType = L"Ignore";
break;
case SERVICE_ERROR_NORMAL:
lpType = L"Normal";
break;
case SERVICE_ERROR_SEVERE:
lpType = L"Severe";
break;
}
SetDlgItemText(hwndDlg, ID_SERVICE_ERROR, lpType);
//dwTagId
if (psci->dwTagId) {
RtlSecureZeroMemory(szBuffer, sizeof(szBuffer));
ultostr(psci->dwTagId, szBuffer);
SetDlgItemText(hwndDlg, ID_SERVICE_TAG, szBuffer);
}
else {
//not assigned tag
SetDlgItemText(hwndDlg, ID_SERVICE_TAG, L"");
}
//State
RtlSecureZeroMemory(&ssp, sizeof(ssp));
if (QueryServiceStatusEx(schService, SC_STATUS_PROCESS_INFO,
(LPBYTE)&ssp, sizeof(ssp), &bytesNeeded))
{
lpType = T_Unknown;
switch (ssp.dwCurrentState) {
case SERVICE_STOPPED:
lpType = L"Stopped";
break;
case SERVICE_START_PENDING:
lpType = L"Start Pending";
break;
case SERVICE_STOP_PENDING:
lpType = L"Stop Pending";
break;
case SERVICE_RUNNING:
lpType = L"Running";
break;
case SERVICE_CONTINUE_PENDING:
lpType = L"Continue Pending";
break;
case SERVICE_PAUSE_PENDING:
lpType = L"Pause Pending";
break;
case SERVICE_PAUSED:
lpType = L"Paused";
break;
}
SetDlgItemText(hwndDlg, ID_SERVICE_CURRENT, lpType);
}
else {
SetDlgItemText(hwndDlg, ID_SERVICE_CURRENT, T_CannotQuery);
}
//Service Description
bRet = FALSE;
SetDlgItemText(hwndDlg, ID_SERVICE_DESCRIPTION, L"");
bytesNeeded = 0x1000;
psd = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bytesNeeded);
if (psd) {
bRet = QueryServiceConfig2(schService, SERVICE_CONFIG_DESCRIPTION,
(LPBYTE)psd, bytesNeeded, &bytesNeeded);
if ((bRet == FALSE) && (bytesNeeded != 0)) {
HeapFree(GetProcessHeap(), 0, psd);
psd = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bytesNeeded);
}
if (psd) {
//set description or hide window
bRet = QueryServiceConfig2(schService, SERVICE_CONFIG_DESCRIPTION,
(LPBYTE)psd, bytesNeeded, &bytesNeeded);
if (bRet) {
SetDlgItemText(hwndDlg, IDC_SERVICE_DESCRIPTION, psd->lpDescription);
}
HeapFree(GetProcessHeap(), 0, psd);
}
}
if (bRet == FALSE) {
//not enough memory, hide description window
ShowWindow(GetDlgItem(hwndDlg, IDC_SERVICE_DESCRIPTION), SW_HIDE);
}
//Service Dependencies
if (psci->lpDependencies) {
//first list DependsOnService, DependsOnGroup
nEndOfList = 0;
nEnd = 0;
nStart = 0;
dwGroups = 0;
dwServices = 0;
//calc total number of symbols
while ((psci->lpDependencies[nEndOfList] != L'\0') || (psci->lpDependencies[nEndOfList + 1] != L'\0'))
nEndOfList++;
if (nEndOfList > 0) {
SendDlgItemMessage(hwndDlg, IDC_SERVICE_DEPENDSONGROUP, CB_RESETCONTENT, (WPARAM)0, (LPARAM)0);
SendDlgItemMessage(hwndDlg, IDC_SERVICE_DEPENDSONSERVICE, CB_RESETCONTENT, (WPARAM)0, (LPARAM)0);
//iterate through MULTI_SZ string
do {
while (psci->lpDependencies[nEnd] != L'\0') {
nEnd++;
}
RtlSecureZeroMemory(&szBuffer, sizeof(szBuffer));
//maximum bytes that can be copied is sizeof(szBuffer)
_strncpy(szBuffer, sizeof(szBuffer), &psci->lpDependencies[nStart], nEnd);
//check if dependency is a group (has "+" before name)
fGroup = (szBuffer[0] == SC_GROUP_IDENTIFIER);
if (fGroup) {
SendDlgItemMessage(hwndDlg, IDC_SERVICE_DEPENDSONGROUP, CB_ADDSTRING,
(WPARAM)0, (LPARAM)&szBuffer[1]);
dwGroups++;
}
else {
SendDlgItemMessage(hwndDlg, IDC_SERVICE_DEPENDSONSERVICE, CB_ADDSTRING,
(WPARAM)0, (LPARAM)&szBuffer);
dwServices++;
}
nEnd++;
nStart = nEnd;
} while (nEnd < nEndOfList);
//group present, enable combobox
if (dwGroups > 0) {
EnableWindow(GetDlgItem(hwndDlg, IDC_SERVICE_DEPENDSONGROUP), TRUE);
SendDlgItemMessage(hwndDlg, IDC_SERVICE_DEPENDSONGROUP, CB_SETCURSEL,
(WPARAM)0, (LPARAM)0);
}
//service present, enable combobox
if (dwServices > 0) {
EnableWindow(GetDlgItem(hwndDlg, IDC_SERVICE_DEPENDSONSERVICE), TRUE);
SendDlgItemMessage(hwndDlg, IDC_SERVICE_DEPENDSONSERVICE, CB_SETCURSEL,
(WPARAM)0, (LPARAM)0);
}
} //if (nEndOfList > 0)
//second list services that depends on this service
SendDlgItemMessage(hwndDlg, IDC_SERVICE_DEPENDENTSERVICES, CB_RESETCONTENT,
(WPARAM)0, (LPARAM)0);
dwServices = 0;
bytesNeeded = 1024;
bRet = FALSE;
//avoid SCM unexpected behaviour by using preallocated buffer
lpDependencies = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bytesNeeded);
if (lpDependencies) {
bRet = EnumDependentServices(schService, SERVICE_STATE_ALL, lpDependencies,
bytesNeeded, &bytesNeeded, &dwServices);
if (bRet && (GetLastError() == ERROR_MORE_DATA)) {
//more memory needed for enum
HeapFree(GetProcessHeap(), 0, lpDependencies);
dwServices = 0;
lpDependencies = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bytesNeeded);
if (lpDependencies) {
bRet = EnumDependentServices(schService, SERVICE_STATE_ALL,
lpDependencies, bytesNeeded, &bytesNeeded,
&dwServices);
}
}
//list dependents
if (bRet && dwServices) {
for (i = 0; i < dwServices; i++) {
ess = *(lpDependencies + i);
SendDlgItemMessage(hwndDlg, IDC_SERVICE_DEPENDENTSERVICES, CB_ADDSTRING,
(WPARAM)0, (LPARAM)ess.lpServiceName);
}
//enable combobox and set current selection to the first item
EnableWindow(GetDlgItem(hwndDlg, IDC_SERVICE_DEPENDENTSERVICES), TRUE);
SendDlgItemMessage(hwndDlg, IDC_SERVICE_DEPENDENTSERVICES, CB_SETCURSEL,
(WPARAM)0, (LPARAM)0);
}
HeapFree(GetProcessHeap(), 0, lpDependencies);
}
} //if (psi->lpDependencies)
} //bResult != FALSE
CloseServiceHandle(schService);
} while (cond);
if (psci != NULL) {
HeapFree(GetProcessHeap(), 0, psci);
}
if (SchSCManager) {
CloseServiceHandle(SchSCManager);
}
if (bResult == FALSE) {
EnumChildWindows(hwndDlg, DriverShowChildWindows, SW_HIDE);
ShowWindow(GetDlgItem(hwndDlg, IDC_QUERYFAIL), SW_SHOW);
}
else {
SetFocus(GetDlgItem(hwndDlg, ID_SERVICE_JUMPTOKEY));
}
}
__except (exceptFilter(GetExceptionCode(), GetExceptionInformation())) {
EnumChildWindows(hwndDlg, DriverShowChildWindows, SW_HIDE);
ShowWindow(GetDlgItem(hwndDlg, IDC_QUERYFAIL), SW_SHOW);
return;
}
}
BOOL EnumDepend(LPCTSTR ServiceName)
{
SC_HANDLE hManager = NULL;
SC_HANDLE hService = NULL;
BOOL bResult = TRUE;
DWORD BufferSize = 0;
DWORD EntriesRead = 0;
LPENUM_SERVICE_STATUS pBuffer = NULL;
DWORD i;
hManager = OpenSCManager(NULL,
NULL,
SC_MANAGER_CONNECT);
if (hManager == NULL)
{
_tprintf(_T("[SC] OpenSCManager FAILED %lu:\n\n"), GetLastError());
bResult = FALSE;
goto done;
}
hService = OpenService(hManager, ServiceName, SERVICE_ENUMERATE_DEPENDENTS);
if (hService == NULL)
{
_tprintf(_T("[SC] OpenService FAILED %lu:\n\n"), GetLastError());
bResult = FALSE;
goto done;
}
if (!EnumDependentServices(hService,
SERVICE_STATE_ALL,
NULL,
0,
&BufferSize,
&EntriesRead))
{
if (BufferSize == 0)
{
_tprintf(_T("[SC] EnumDependentServices FAILED %lu:\n\n"), GetLastError());
bResult = FALSE;
goto done;
}
}
pBuffer = HeapAlloc(GetProcessHeap(), 0, BufferSize);
if (pBuffer == NULL)
{
SetLastError(ERROR_OUTOFMEMORY);
_tprintf(_T("[SC] HeapAlloc FAILED %lu:\n\n"), GetLastError());
bResult = FALSE;
goto done;
}
if (!EnumDependentServices(hService,
SERVICE_STATE_ALL,
pBuffer,
BufferSize,
&BufferSize,
&EntriesRead))
{
_tprintf(_T("[SC] EnumDependentServices FAILED %lu:\n\n"), GetLastError());
bResult = FALSE;
goto done;
}
_tprintf(_T("Enum: entriesRead = %lu\n"), EntriesRead);
for (i = 0; i < EntriesRead; i++)
{
_tprintf(_T("\n"));
_tprintf(_T("SERVICE_NAME: %s\n"), pBuffer[i].lpServiceName);
_tprintf(_T("DISPLAY_NAME: %s\n"), pBuffer[i].lpDisplayName);
PrintServiceStatus(&pBuffer[i].ServiceStatus);
}
done:
if (bResult == FALSE)
ReportLastError();
if (pBuffer != NULL)
HeapFree(GetProcessHeap(), 0, pBuffer);
if (hService)
CloseServiceHandle(hService);
if (hManager)
CloseServiceHandle(hManager);
return bResult;
}
BOOL MainFrame::StopDependentServices(SC_HANDLE schSCManager, SC_HANDLE schService)
{
DWORD i;
DWORD dwBytesNeeded;
DWORD dwCount;
LPENUM_SERVICE_STATUS lpDependencies = NULL;
ENUM_SERVICE_STATUS ess;
SC_HANDLE hDepService;
SERVICE_STATUS_PROCESS ssp;
DWORD dwStartTime = GetTickCount();
DWORD dwTimeout = 30000; // 30-second time-out
// Pass a zero-length buffer to get the required buffer size.
if ( EnumDependentServices( schService, SERVICE_ACTIVE,
lpDependencies, 0, &dwBytesNeeded, &dwCount ) )
{
// If the Enum call succeeds, then there are no dependent
// services, so do nothing.
return TRUE;
}
else
{
if ( GetLastError() != ERROR_MORE_DATA )
return FALSE; // Unexpected error
// Allocate a buffer for the dependencies.
lpDependencies = (LPENUM_SERVICE_STATUS) HeapAlloc(
GetProcessHeap(), HEAP_ZERO_MEMORY, dwBytesNeeded );
if ( !lpDependencies )
return FALSE;
__try {
// Enumerate the dependencies.
if ( !EnumDependentServices( schService, SERVICE_ACTIVE,
lpDependencies, dwBytesNeeded, &dwBytesNeeded,
&dwCount ) )
return FALSE;
for ( i = 0; i < dwCount; i++ )
{
ess = *(lpDependencies + i);
// Open the service.
hDepService = OpenService( schSCManager,
ess.lpServiceName,
SERVICE_STOP | SERVICE_QUERY_STATUS );
if ( !hDepService )
return FALSE;
__try {
// Send a stop code.
if ( !ControlService( hDepService,
SERVICE_CONTROL_STOP,
(LPSERVICE_STATUS) &ssp ) )
return FALSE;
// Wait for the service to stop.
while ( ssp.dwCurrentState != SERVICE_STOPPED )
{
Sleep( ssp.dwWaitHint );
if ( !QueryServiceStatusEx(
hDepService,
SC_STATUS_PROCESS_INFO,
(LPBYTE)&ssp,
sizeof(SERVICE_STATUS_PROCESS),
&dwBytesNeeded ) )
return FALSE;
if ( ssp.dwCurrentState == SERVICE_STOPPED )
break;
if ( GetTickCount() - dwStartTime > dwTimeout )
return FALSE;
}
}
__finally
{
// Always release the service handle.
CloseServiceHandle( hDepService );
}
}
}
__finally
{
// Always free the enumeration buffer.
HeapFree( GetProcessHeap(), 0, lpDependencies );
}
}
return TRUE;
}
BOOL StopDependentServices(SC_HANDLE hSCManager, SC_HANDLE hService)
{
LPENUM_SERVICE_STATUS lpDependencies = NULL;
ENUM_SERVICE_STATUS ess;
SC_HANDLE hDepService;
SERVICE_STATUS_PROCESS ssp;
DWORD i, dwBytesNeeded, dwCount;
DWORD dwStartTime = GetTickCount();
DWORD dwTimeout = 30000; // 30 секундна пауза
// Пускане на буфер с нулева дължина, за да се получи желания размер на буфера.
if (EnumDependentServices(hService, SERVICE_ACTIVE, lpDependencies, 0, &dwBytesNeeded, &dwCount))
// Ако извикването на Enum-а е успешно, тогава няма зависими
// сервиси, така че не се прави нищо.
return TRUE;
if (GetLastError() != ERROR_MORE_DATA)
return FALSE; // Неочаквана грешка
// Алокиране на буфер за зависимостите.
lpDependencies = (LPENUM_SERVICE_STATUS)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, dwBytesNeeded);
if (!lpDependencies)
return FALSE;
__try {
// Избройват се зависимостите.
if (!EnumDependentServices(hService, SERVICE_ACTIVE, lpDependencies,
dwBytesNeeded, &dwBytesNeeded, &dwCount))
return FALSE;
for (i=0; i<dwCount; i++) {
ess = *(lpDependencies + i);
// Отваря се сервиса
hDepService = OpenService(hSCManager, ess.lpServiceName, SERVICE_STOP|SERVICE_QUERY_STATUS);
if (!hDepService)
return FALSE;
__try {
// Изпраща се стоп код.
if (!ControlService(hDepService, SERVICE_CONTROL_STOP, (LPSERVICE_STATUS)&ssp))
return FALSE;
// Изчаква се сервиса да спре.
while (ssp.dwCurrentState != SERVICE_STOPPED) {
Sleep(ssp.dwWaitHint);
if (!QueryServiceStatusEx(hDepService, SC_STATUS_PROCESS_INFO, (LPBYTE)&ssp,
sizeof(SERVICE_STATUS_PROCESS), &dwBytesNeeded))
return FALSE;
if (ssp.dwCurrentState == SERVICE_STOPPED)
break;
if (GetTickCount() - dwStartTime > dwTimeout)
return FALSE;
}
} __finally {
// Винаги се изпуска дръжката на сервиса.
CloseServiceHandle(hDepService);
}
}
} __finally {
// Винаги се освобождава изброения буфер.
HeapFree(GetProcessHeap(), 0, lpDependencies);
}
return TRUE;
}
/*
This function attempts to stop a service. It allows the caller to
specify whether dependent services should also be stopped. It also
accepts a timeout value, to prevent a scenario in which a service
shutdown hangs, then the application stopping the service hangs
Parameters:
pszServiceName - service name string
fStopDependencies - Indicates whether to stop dependent services.
dwTimeout - maximum time (in milliseconds) to wait
If the operation is successful, returns true. Otherwise, returns false.
*/
bool ServiceManager_t::StopService(_TCHAR * pszServiceName, bool fStopDependencies,
DWORD dwTimeout)
{
SC_HANDLE schService;
SERVICE_STATUS_PROCESS ssp;
SERVICE_STATUS ssDummy;
DWORD dwStartTime = GetTickCount();
DWORD dwBytesNeeded;
if (!_QueryServiceStatusEx)
{
g_Log.Write(_T("Dynamic function QueryServiceStatusEx not initialized."));
return false;
}
schService = OpenService(schSCManager, pszServiceName, SERVICE_ALL_ACCESS);
if (schService == NULL)
{
g_Log.Write(_T("Could not open service '%s'."), pszServiceName);
return false;
}
// Make sure the service is not already stopped:
if (!_QueryServiceStatusEx(schService, SC_STATUS_PROCESS_INFO, (LPBYTE)&ssp,
sizeof(SERVICE_STATUS_PROCESS), &dwBytesNeeded))
{
g_Log.Write(_T("Could not tell if service '%s' already stopped - error %d."),
pszServiceName, GetLastError());
return false;
}
if (ssp.dwCurrentState == SERVICE_STOPPED)
return true;
// If a stop is pending, just wait for it:
while (ssp.dwCurrentState == SERVICE_STOP_PENDING)
{
Sleep(ssp.dwWaitHint);
if (!_QueryServiceStatusEx(schService, SC_STATUS_PROCESS_INFO, (LPBYTE)&ssp,
sizeof(SERVICE_STATUS_PROCESS), &dwBytesNeeded))
{
g_Log.Write(_T("Could not tell if service '%s' already stopped - error %d."),
pszServiceName, GetLastError());
return false;
}
if (ssp.dwCurrentState == SERVICE_STOPPED)
return true;
if (GetTickCount() - dwStartTime > dwTimeout)
{
g_Log.Write(_T("Timed out waiting for service '%s' to stop."),
pszServiceName);
return false;
}
}
// If the service is running, dependencies must be stopped first:
if (fStopDependencies)
{
DWORD i;
DWORD dwBytesNeeded;
DWORD dwCount;
LPENUM_SERVICE_STATUS lpDependencies = NULL;
ENUM_SERVICE_STATUS ess;
SC_HANDLE hDepService;
// Pass a zero-length buffer to get the required buffer size:
if (EnumDependentServices(schService, SERVICE_ACTIVE, lpDependencies, 0, &dwBytesNeeded,
&dwCount))
{
// If the Enum call succeeds, then there are no dependent services so do nothing
}
else
{
if (GetLastError() != ERROR_MORE_DATA)
{
g_Log.Write(_T("Unexpected error %d while trying to obtain buffer size needed to enumerate dependent services of '%s'."),
GetLastError(), pszServiceName);
return false; // Unexpected error.
}
// Allocate a buffer for the dependencies:
lpDependencies = (LPENUM_SERVICE_STATUS)HeapAlloc(GetProcessHeap(),
HEAP_ZERO_MEMORY, dwBytesNeeded);
if (!lpDependencies)
{
g_Log.Write(_T("Unexpected error while trying to create buffer needed to enumerate dependent services of '%s'."),
GetLastError(), pszServiceName);
return false; // Unexpected error.
}
__try
{
// Enumerate the dependencies:
if (!EnumDependentServices(schService, SERVICE_ACTIVE, lpDependencies,
dwBytesNeeded, &dwBytesNeeded, &dwCount))
{
g_Log.Write(_T("Unexpected error %d while trying to enumerate dependent services of '%s'."),
GetLastError(), pszServiceName);
return false; // Unexpected error.
}
for (i = 0; i < dwCount; i++)
{
ess = *(lpDependencies + i);
// Open the service:
hDepService = OpenService(schSCManager, ess.lpServiceName,
SERVICE_STOP | SERVICE_QUERY_STATUS);
if (!hDepService)
{
g_Log.Write(_T("Unexpected error %d while trying to open dependent service '%s' of '%s'."),
GetLastError(), ess.lpServiceName, pszServiceName);
return false; // Unexpected error.
}
__try
{
// Send a stop code:
if (!ControlService(hDepService, SERVICE_CONTROL_STOP, &ssDummy))
{
g_Log.Write(_T("Unexpected error %d while trying to stop dependent service '%s' of '%s'."),
GetLastError(), ess.lpServiceName, pszServiceName);
return false; // Unexpected error.
}
// Wait for the service to stop:
do
{
if (!_QueryServiceStatusEx(hDepService, SC_STATUS_PROCESS_INFO,
(LPBYTE)&ssp, sizeof(SERVICE_STATUS_PROCESS), &dwBytesNeeded))
{
g_Log.Write(_T("Unexpected error %d while trying to get status of dependent service '%s' of '%s'."),
GetLastError(), ess.lpServiceName, pszServiceName);
return false; // Unexpected error.
}
if (ssp.dwCurrentState == SERVICE_STOPPED)
break;
if (GetTickCount() - dwStartTime > dwTimeout)
{
g_Log.Write(_T("Timed out while trying to stop dependent service '%s' of '%s'."),
ess.lpServiceName, pszServiceName);
return false;
}
Sleep(ssp.dwWaitHint);
} while (ssp.dwCurrentState != SERVICE_STOPPED);
}
__finally
{
// Always release the service handle:
CloseServiceHandle(hDepService);
}
} // Next dependent service
}
__finally
{
// Always free the enumeration buffer:
HeapFree(GetProcessHeap(), 0, lpDependencies);
}
}
}
// Send a stop code to the main service:
if (!ControlService(schService, SERVICE_CONTROL_STOP, &ssDummy))
{
g_Log.Write(_T("Unexpected error %d while trying to stop service '%s'."),
GetLastError(), pszServiceName);
return false; // Unexpected error.
}
// Wait for the service to stop:
do
{
if (!_QueryServiceStatusEx(schService, SC_STATUS_PROCESS_INFO, (LPBYTE)&ssp,
sizeof(SERVICE_STATUS_PROCESS), &dwBytesNeeded))
{
g_Log.Write(_T("Unexpected error %d while trying to get status of service '%s'."),
GetLastError(), pszServiceName);
return false; // Unexpected error.
}
if (ssp.dwCurrentState == SERVICE_STOPPED)
break;
if (GetTickCount() - dwStartTime > dwTimeout)
{
g_Log.Write(_T("Timed out while trying to stop service '%s'."), pszServiceName);
return false;
}
Sleep(ssp.dwWaitHint);
} while (ssp.dwCurrentState != SERVICE_STOPPED);
// Return success:
return true;
}
