532 lines
20 KiB
C++
532 lines
20 KiB
C++
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// --------------------------------------------------------------------------
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// Module Name: GracefulTerminateApplication.cpp
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//
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// Copyright (c) 2000, Microsoft Corporation
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//
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// Class to manager terminating applications gracefully.
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//
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// History: 2000-10-27 vtan created
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// 2000-11-04 vtan split into separate file
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// --------------------------------------------------------------------------
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#ifdef _X86_
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#include "StandardHeader.h"
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#include "GracefulTerminateApplication.h"
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#include "KernelResources.h"
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#include "Thread.h"
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#include "WarningDialog.h"
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// --------------------------------------------------------------------------
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// CProgressDialog
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//
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// Purpose: A class to manage displaying a progress dialog on a separate
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// thread if a certain period of time elapses. This is so that
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// in case the process doesn't terminate in a period of time
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// a dialog indicating wait is shown so the user is not left
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// staring at a blank screen.
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//
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// History: 2000-11-04 vtan created
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// --------------------------------------------------------------------------
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class CProgressDialog : public CThread
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{
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private:
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CProgressDialog (void);
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public:
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CProgressDialog (CWarningDialog *pWarningDialog);
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virtual ~CProgressDialog (void);
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void SignalTerminated (void);
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protected:
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virtual DWORD Entry (void);
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private:
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CWarningDialog* _pWarningDialog;
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CEvent _event;
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};
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// --------------------------------------------------------------------------
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// CProgressDialog::CProgressDialog
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//
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// Arguments: <none>
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//
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// Returns: <none>
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//
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// Purpose: Constructor for CProgressDialog. Keeps a reference to the
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// given CWarningDialog.
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//
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// History: 2000-11-04 vtan created
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// --------------------------------------------------------------------------
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CProgressDialog::CProgressDialog (CWarningDialog *pWarningDialog) :
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_pWarningDialog(NULL),
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_event(NULL)
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{
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if (IsCreated())
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{
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pWarningDialog->AddRef();
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_pWarningDialog = pWarningDialog;
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Resume();
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}
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}
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// --------------------------------------------------------------------------
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// CProgressDialog::~CProgressDialog
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//
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// Arguments: <none>
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//
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// Returns: <none>
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//
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// Purpose: Releases the CWarningDialog reference.
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//
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// History: 2000-11-04 vtan created
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// --------------------------------------------------------------------------
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CProgressDialog::~CProgressDialog (void)
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{
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_pWarningDialog->Release();
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_pWarningDialog = NULL;
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}
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// --------------------------------------------------------------------------
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// CProgressDialog::SignalTerminated
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//
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// Arguments: <none>
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//
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// Returns: <none>
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//
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// Purpose: Signals the internal event that the process being watched is
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// termination. This is necessary because there is no handle to
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// the actual process to watch as it's kept on the server side
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// and not given to us the client. However, the result of the
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// termination is. Signaling this object will release the waiting
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// thread and cause it to exit.
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//
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// History: 2000-11-04 vtan created
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// --------------------------------------------------------------------------
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void CProgressDialog::SignalTerminated (void)
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{
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TSTATUS(_event.Set());
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}
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// --------------------------------------------------------------------------
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// CProgressDialog::Entry
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//
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// Arguments: <none>
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//
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// Returns: DWORD
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//
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// Purpose: Thread which waits for the internal event to be signaled. If
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// the event is signaled it will "cancel" the 3 second wait and
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// the thread will exit. Otherwise the wait times out and the
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// progress dialog is shown - waiting for termination.
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//
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// History: 2000-11-04 vtan created
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// --------------------------------------------------------------------------
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DWORD CProgressDialog::Entry (void)
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{
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DWORD dwWaitResult;
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// Wait for the event to be signaled or for it to timeout. If signaled
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// then the process is terminated and no progress is required. Otherwise
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// prepare to show progress while the process is being terminated.
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if (NT_SUCCESS(_event.Wait(2000, &dwWaitResult)) && (WAIT_TIMEOUT == dwWaitResult))
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{
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_pWarningDialog->ShowProgress(100, 7500);
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}
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return(0);
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}
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// --------------------------------------------------------------------------
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// CGracefulTerminateApplication::CGracefulTerminateApplication
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//
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// Arguments: <none>
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//
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// Returns: <none>
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//
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// Purpose: Constructor for CGracefulTerminateApplication.
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//
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// History: 2000-10-27 vtan created
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// --------------------------------------------------------------------------
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CGracefulTerminateApplication::CGracefulTerminateApplication (void) :
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_dwProcessID(0),
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_fFoundWindow(false)
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{
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}
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// --------------------------------------------------------------------------
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// CGracefulTerminateApplication::~CGracefulTerminateApplication
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//
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// Arguments: <none>
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//
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// Returns: <none>
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//
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// Purpose: Destructor for CGracefulTerminateApplication.
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//
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// History: 2000-10-27 vtan created
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// --------------------------------------------------------------------------
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CGracefulTerminateApplication::~CGracefulTerminateApplication (void)
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{
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}
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// --------------------------------------------------------------------------
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// CGracefulTerminateApplication::Terminate
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//
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// Arguments: dwProcessID = Process ID of process to terminate.
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//
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// Returns: <none>
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//
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// Purpose: Walk the window list for top level windows that correspond
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// to this process ID and are visible. Close them. The callback
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// handles the work and this function returns the result in the
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// process exit code which the server examines.
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//
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// History: 2000-10-27 vtan created
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// --------------------------------------------------------------------------
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void CGracefulTerminateApplication::Terminate (DWORD dwProcessID)
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{
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DWORD dwExitCode;
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_dwProcessID = dwProcessID;
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TBOOL(EnumWindows(EnumWindowsProc, reinterpret_cast<LPARAM>(this)));
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if (_fFoundWindow)
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{
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dwExitCode = WAIT_WINDOWS_FOUND;
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}
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else
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{
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dwExitCode = NO_WINDOWS_FOUND;
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}
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ExitProcess(dwExitCode);
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}
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// --------------------------------------------------------------------------
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// CGracefulTerminateApplication::Prompt
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//
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// Arguments: hInstance = HINSTANCE of this DLL.
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// hProcess = Inherited handle to parent process.
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//
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// Returns: <none>
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//
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// Purpose: Shows a prompt that handles termination of the parent of this
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// process. The parent is assumed to be a bad application type 1
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// that caused this stub to be executed via the
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// "rundll32 shsvcs.dll,FUSCompatibilityEntry prompt" command.
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// Because there can only be a single instance of the type 1
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// application running and the parent of this process hasn't
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// registered yet querying for this process by image name will
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// always find the correct process.
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//
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// History: 2000-11-03 vtan created
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// --------------------------------------------------------------------------
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void CGracefulTerminateApplication::Prompt (HINSTANCE hInstance, HANDLE hProcess)
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{
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bool fTerminated;
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ULONG ulReturnLength;
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PROCESS_BASIC_INFORMATION processBasicInformation;
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// Read the parent's image name from the RTL_USER_PROCESS_PARAMETERS.
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fTerminated = false;
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if (hProcess != NULL)
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{
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if (NT_SUCCESS(NtQueryInformationProcess(hProcess,
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ProcessBasicInformation,
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&processBasicInformation,
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sizeof(processBasicInformation),
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&ulReturnLength)))
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{
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SIZE_T dwNumberOfBytesRead;
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PEB peb;
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if (ReadProcessMemory(hProcess,
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processBasicInformation.PebBaseAddress,
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&peb,
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sizeof(peb),
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&dwNumberOfBytesRead) != FALSE)
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{
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RTL_USER_PROCESS_PARAMETERS processParameters;
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if (ReadProcessMemory(hProcess,
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peb.ProcessParameters,
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&processParameters,
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sizeof(processParameters),
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&dwNumberOfBytesRead) != FALSE)
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{
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WCHAR *pszImageName;
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pszImageName = static_cast<WCHAR*>(LocalAlloc(LMEM_FIXED, processParameters.ImagePathName.Length + (sizeof('\0') * sizeof(WCHAR))));
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if (pszImageName != NULL)
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{
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if (ReadProcessMemory(hProcess,
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processParameters.ImagePathName.Buffer,
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pszImageName,
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processParameters.ImagePathName.Length,
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&dwNumberOfBytesRead) != FALSE)
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{
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pszImageName[processParameters.ImagePathName.Length / sizeof(WCHAR)] = L'\0';
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// And show a prompt for this process.
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fTerminated = ShowPrompt(hInstance, pszImageName);
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}
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(HLOCAL)LocalFree(pszImageName);
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}
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}
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}
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}
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TBOOL(CloseHandle(hProcess));
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}
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ExitProcess(fTerminated);
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}
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// --------------------------------------------------------------------------
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// CGracefulTerminateApplication::ShowPrompt
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//
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// Arguments: hInstance = HINSTANCE of this DLL.
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// pszImagename = Image name of process to terminate.
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//
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// Returns: bool
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//
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// Purpose: Shows the appropriate prompt for termination of the first
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// instance of a BAM type 1 process. If the current user does
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// not have administrator privileges then a "STOP" dialog is
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// shown that the user must get the other user to close the
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// program. Otherwise the "PROMPT" dialog is shown which gives
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// the user the option to terminate the process.
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//
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// If termination is requested and the termatinion fails the
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// another warning dialog to that effect is shown.
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//
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// History: 2000-11-03 vtan created
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// --------------------------------------------------------------------------
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bool CGracefulTerminateApplication::ShowPrompt (HINSTANCE hInstance, const WCHAR *pszImageName)
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{
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bool fTerminated;
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ULONG ulConnectionInfoLength;
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HANDLE hPort;
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UNICODE_STRING portName;
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SECURITY_QUALITY_OF_SERVICE sqos;
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WCHAR szConnectionInfo[32];
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fTerminated = false;
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RtlInitUnicodeString(&portName, FUS_PORT_NAME);
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sqos.Length = sizeof(sqos);
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sqos.ImpersonationLevel = SecurityImpersonation;
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sqos.ContextTrackingMode = SECURITY_DYNAMIC_TRACKING;
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sqos.EffectiveOnly = TRUE;
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lstrcpyW(szConnectionInfo, FUS_CONNECTION_REQUEST);
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ulConnectionInfoLength = sizeof(szConnectionInfo);
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if (NT_SUCCESS(NtConnectPort(&hPort,
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&portName,
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&sqos,
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NULL,
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NULL,
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NULL,
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szConnectionInfo,
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&ulConnectionInfoLength)))
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{
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bool fCanTerminateFirstInstance;
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CWarningDialog *pWarningDialog;
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WCHAR szUser[256];
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// Get the user's privilege level for this operation. This API also
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// returns the current user for the BAM type 1 process.
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fCanTerminateFirstInstance = CanTerminateFirstInstance(hPort, pszImageName, szUser, ARRAYSIZE(szUser));
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pWarningDialog = new CWarningDialog(hInstance, NULL, pszImageName, szUser);
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if (pWarningDialog != NULL)
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{
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// Show the appropriate dialog based on the privilege level.
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if (pWarningDialog->ShowPrompt(fCanTerminateFirstInstance) == IDOK)
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{
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CProgressDialog *pProgressDialog;
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// Create a progress dialog object in case of delayed termination.
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// This will create the watcher thread.
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pProgressDialog = new CProgressDialog(pWarningDialog);
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if ((pProgressDialog != NULL) && !pProgressDialog->IsCreated())
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{
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pProgressDialog->Release();
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pProgressDialog = NULL;
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}
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// Attempt to terminate the process if requested by the user.
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fTerminated = TerminatedFirstInstance(hPort, pszImageName);
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// Once this function returns signal the event (in case the
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// thread is still waiting). If the thread is still waiting this
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// effectively cancels the dialog. Either way if the dialog is
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// shown then close it, wait for the thread to exit and release
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// the reference to destroy the object.
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if (pProgressDialog != NULL)
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{
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pProgressDialog->SignalTerminated();
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pWarningDialog->CloseDialog();
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pProgressDialog->WaitForCompletion(INFINITE);
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pProgressDialog->Release();
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}
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// If there was some failure then let the user know.
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if (!fTerminated)
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{
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pWarningDialog->ShowFailure();
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}
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}
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pWarningDialog->Release();
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}
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TBOOL(CloseHandle(hPort));
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}
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return(fTerminated);
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}
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// --------------------------------------------------------------------------
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// CGracefulTerminateApplication::CanTerminateFirstInstance
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//
|
||
|
|
// Arguments: hPort = Port to server.
|
||
|
|
// pszImageName = Image name of process to terminate.
|
||
|
|
// pszUser = User of process (returned).
|
||
|
|
// cchUser = Count of characters for buffer.
|
||
|
|
//
|
||
|
|
// Returns: bool
|
||
|
|
//
|
||
|
|
// Purpose: Asks the server whether the current user has privileges to
|
||
|
|
// terminate the BAM type 1 process of the given image name
|
||
|
|
// which is known to be running. The API returns whether the
|
||
|
|
// operation is allowed and who the current user of the process
|
||
|
|
// is.
|
||
|
|
//
|
||
|
|
// History: 2000-11-03 vtan created
|
||
|
|
// --------------------------------------------------------------------------
|
||
|
|
|
||
|
|
bool CGracefulTerminateApplication::CanTerminateFirstInstance (HANDLE hPort, const WCHAR *pszImageName, WCHAR *pszUser, int cchUser)
|
||
|
|
|
||
|
|
{
|
||
|
|
bool fCanTerminate;
|
||
|
|
|
||
|
|
fCanTerminate = false;
|
||
|
|
if ((hPort != NULL) && (pszImageName != NULL))
|
||
|
|
{
|
||
|
|
FUSAPI_PORT_MESSAGE portMessageIn, portMessageOut;
|
||
|
|
|
||
|
|
ZeroMemory(&portMessageIn, sizeof(portMessageIn));
|
||
|
|
ZeroMemory(&portMessageOut, sizeof(portMessageOut));
|
||
|
|
portMessageIn.apiBAM.apiGeneric.ulAPINumber = API_BAM_QUERYUSERPERMISSION;
|
||
|
|
portMessageIn.apiBAM.apiSpecific.apiQueryUserPermission.in.pszImageName = pszImageName;
|
||
|
|
portMessageIn.apiBAM.apiSpecific.apiQueryUserPermission.in.cchImageName = lstrlen(pszImageName) + sizeof('\0');
|
||
|
|
portMessageIn.apiBAM.apiSpecific.apiQueryUserPermission.in.pszUser = pszUser;
|
||
|
|
portMessageIn.apiBAM.apiSpecific.apiQueryUserPermission.in.cchUser = cchUser;
|
||
|
|
portMessageIn.portMessage.u1.s1.DataLength = sizeof(API_BAM);
|
||
|
|
portMessageIn.portMessage.u1.s1.TotalLength = static_cast<CSHORT>(sizeof(FUSAPI_PORT_MESSAGE));
|
||
|
|
if (NT_SUCCESS(NtRequestWaitReplyPort(hPort, &portMessageIn.portMessage, &portMessageOut.portMessage)) &&
|
||
|
|
NT_SUCCESS(portMessageOut.apiBAM.apiGeneric.status))
|
||
|
|
{
|
||
|
|
fCanTerminate = portMessageOut.apiBAM.apiSpecific.apiQueryUserPermission.out.fCanShutdownApplication;
|
||
|
|
pszUser[cchUser - sizeof('\0')] = L'\0';
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
pszUser[0] = L'\0';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return(fCanTerminate);
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------------
|
||
|
|
// CGracefulTerminateApplication::TerminatedFirstInstance
|
||
|
|
//
|
||
|
|
// Arguments: hPort = Port to server.
|
||
|
|
// pszImageName = Image name to terminate.
|
||
|
|
//
|
||
|
|
// Returns: bool
|
||
|
|
//
|
||
|
|
// Purpose: Asks the server to terminate the first running instance of the
|
||
|
|
// BAM type 1 process.
|
||
|
|
//
|
||
|
|
// History: 2000-11-03 vtan created
|
||
|
|
// --------------------------------------------------------------------------
|
||
|
|
|
||
|
|
bool CGracefulTerminateApplication::TerminatedFirstInstance (HANDLE hPort, const WCHAR *pszImageName)
|
||
|
|
|
||
|
|
{
|
||
|
|
bool fTerminated;
|
||
|
|
|
||
|
|
fTerminated = false;
|
||
|
|
if (hPort != NULL)
|
||
|
|
{
|
||
|
|
FUSAPI_PORT_MESSAGE portMessageIn, portMessageOut;
|
||
|
|
|
||
|
|
ZeroMemory(&portMessageIn, sizeof(portMessageIn));
|
||
|
|
ZeroMemory(&portMessageOut, sizeof(portMessageOut));
|
||
|
|
portMessageIn.apiBAM.apiGeneric.ulAPINumber = API_BAM_TERMINATERUNNING;
|
||
|
|
portMessageIn.apiBAM.apiSpecific.apiTerminateRunning.in.pszImageName = pszImageName;
|
||
|
|
portMessageIn.apiBAM.apiSpecific.apiTerminateRunning.in.cchImageName = lstrlen(pszImageName) + sizeof('\0');
|
||
|
|
portMessageIn.portMessage.u1.s1.DataLength = sizeof(API_BAM);
|
||
|
|
portMessageIn.portMessage.u1.s1.TotalLength = static_cast<CSHORT>(sizeof(FUSAPI_PORT_MESSAGE));
|
||
|
|
if (NT_SUCCESS(NtRequestWaitReplyPort(hPort, &portMessageIn.portMessage, &portMessageOut.portMessage)) &&
|
||
|
|
NT_SUCCESS(portMessageOut.apiBAM.apiGeneric.status))
|
||
|
|
{
|
||
|
|
fTerminated = portMessageOut.apiBAM.apiSpecific.apiTerminateRunning.out.fResult;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return(fTerminated);
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------------
|
||
|
|
// CGracefulTerminateApplication::EnumWindowsProc
|
||
|
|
//
|
||
|
|
// Arguments: See the platform SDK under EnumWindowsProc.
|
||
|
|
//
|
||
|
|
// Returns: See the platform SDK under EnumWindowsProc.
|
||
|
|
//
|
||
|
|
// Purpose: Top level window enumerator callback which compares the
|
||
|
|
// process IDs of the windows and whether they are visible. If
|
||
|
|
// there is a match on BOTH counts the a WM_CLOSE message is
|
||
|
|
// posted to the window to allow a graceful termination.
|
||
|
|
//
|
||
|
|
// History: 2000-10-27 vtan created
|
||
|
|
// --------------------------------------------------------------------------
|
||
|
|
|
||
|
|
BOOL CALLBACK CGracefulTerminateApplication::EnumWindowsProc (HWND hwnd, LPARAM lParam)
|
||
|
|
|
||
|
|
{
|
||
|
|
DWORD dwThreadID, dwProcessID;
|
||
|
|
CGracefulTerminateApplication *pThis;
|
||
|
|
|
||
|
|
pThis = reinterpret_cast<CGracefulTerminateApplication*>(lParam);
|
||
|
|
dwThreadID = GetWindowThreadProcessId(hwnd, &dwProcessID);
|
||
|
|
if ((dwProcessID == pThis->_dwProcessID) && IsWindowVisible(hwnd))
|
||
|
|
{
|
||
|
|
pThis->_fFoundWindow = true;
|
||
|
|
TBOOL(PostMessage(hwnd, WM_CLOSE, 0, 0));
|
||
|
|
}
|
||
|
|
return(TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* _X86_ */
|
||
|
|
|