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Very secure method to save and restore registry

, 23 Aug 2004
This article gives a very secure method to save and restore registry keys. It provides a ready to use tool in both command-line and UI modes.
regsr_src.zip
res
RegSR.ico
RegConfig.ini
RegConfig.ini.bak
RegSR.clw
RegSR.dsp
RegSR.dsw
// MainDlg.cpp : implementation file
//
// RegSR.h : main header file for the REGSR application
//	Author:		A.YEZZA
//	Date:		August 2004
//	Subject:	Save/Restore registry keys in very safe mode
//	Comment:	Use with your own risk
//	Licence:	This code and application are free. The only 
//				condition is preserving author name			
///////////////////////////////////////////////////////////////////////////////////////


#include "stdafx.h"
#include "RegSR.h"
#include "MainDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif


extern CRegSRApp	theApp;

/////////////////////////////////////////////////////////////////////////////
// CMainDlg dialog

CMainDlg::CMainDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMainDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMainDlg)
	m_Root = -1;
	m_ConfFile = _T("");
	m_InOutFile = _T("");
	m_KeyPath = _T("");
	m_Result = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMainDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMainDlg)
	DDX_CBIndex(pDX, IDC_COMBO_ROOT, m_Root);
	DDX_CBString(pDX, IDC_COMBO_CONF_FILE, m_ConfFile);
	DDV_MaxChars(pDX, m_ConfFile, 260);
	DDX_CBString(pDX, IDC_COMBO_IN_OUT_FILE, m_InOutFile);
	DDV_MaxChars(pDX, m_InOutFile, 260);
	DDX_CBString(pDX, IDC_COMBO_KEY_PATH, m_KeyPath);
	DDV_MaxChars(pDX, m_KeyPath, 260);
	DDX_Text(pDX, IDC_EDIT_RESULT, m_Result);
	DDV_MaxChars(pDX, m_Result, 15);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMainDlg, CDialog)
	//{{AFX_MSG_MAP(CMainDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_BROWSE_FILE, OnButtonBrowseForModule)
	ON_BN_CLICKED(IDC_BUTTON_BROWSE_FILE1, OnButtonBrowseForFileData)
	ON_BN_CLICKED(IDC_BUTTON_SAVE, OnButtonSave)
	ON_BN_CLICKED(IDC_BUTTON_RESTORE, OnButtonRestore)
	ON_BN_CLICKED(IDC_BUTTON_GET_ERR_DESC, OnButtonGetErrDesc)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMainDlg message handlers

BOOL CMainDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CMainDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CMainDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CMainDlg::OnButtonBrowseForModule() 
{
	// TODO: Add your control notification handler code here
	UpdateData();
	this->m_ConfFile=GetFile(CString("Sp�cify module:"), 0, this->m_ConfFile, 
							CString("Ini files (*.ini)|*.ini|All files (*.*)|*.* ||"));
	UpdateData(FALSE);
}

CString CMainDlg::GetFile(CString & Title, int Falg, CString & DefFile, CString & DefExt)
{
	if (Falg==0) {	//Get file
		CFileDialog dlg(TRUE, DefFile, NULL, OFN_FILEMUSTEXIST|OFN_HIDEREADONLY, DefExt, this);
		if (dlg.DoModal()==IDOK) 
			return (dlg.GetPathName());
		else return DefFile;
	}
	else {	//Get directory
		TCHAR path[MAX_PATH];
		BROWSEINFO bi = {0};
		bi.lpszTitle ="Select path:";
		LPITEMIDLIST pidl = SHBrowseForFolder(&bi);

		if (pidl!=0) {
			// get the name of the folder and put it in path
			SHGetPathFromIDList(pidl, path );
			//Set the current directory to path
			SetCurrentDirectory (path);
			if (strcmp(path, "")!=0)
				return CString(path);
			else return DefFile;
		}
		else	return DefFile;
	}

}

void CMainDlg::OnButtonBrowseForFileData() 
{
	// TODO: Add your control notification handler code here
	UpdateData();
	this->m_InOutFile =GetFile(CString("Sp�cify data file:"), 0, this->m_InOutFile, 
							CString("DATA files (*.dat)|*.dat|All files (*.*)|*.*||"));
	UpdateData(FALSE);
}

void CMainDlg::OnButtonSave() 
{
	// TODO: Add your control notification handler code here
	int		ParamsNum=0;
	DWORD	RetErr=0;
	m_Result="";
	
	//	set dialog params for Save
	SetParams(CString("S"));
	
	//	set application params and call the 
	//	corresponding method
	theApp.SetParams(m_Params, ParamsNum);
	theApp.DoSaveRestore(RetErr);
	GetDlgItem(IDC_BUTTON_GET_ERR_DESC)->EnableWindow((RetErr==0)?FALSE:TRUE);

	//	Display result error code
	char	strErr[20];
	ltoa(RetErr,strErr,10);
	m_Result=strErr;

	UpdateData(FALSE);
}

void CMainDlg::OnButtonRestore() 
{
	// TODO: Add your control notification handler code here
	int		ParamsNum=0;
	DWORD	RetErr=0;
	m_Result="";
	
	//	set dialog params for Restore
	SetParams(CString("R"));

	//	set application params and call the 
	//	corresponding method
	theApp.SetParams(m_Params, ParamsNum);
	theApp.DoSaveRestore(RetErr);
	GetDlgItem(IDC_BUTTON_GET_ERR_DESC)->EnableWindow((RetErr==0)?FALSE:TRUE);


	//	Display result error code
	char	strErr[20];
	ltoa(RetErr,strErr,10);
	m_Result=strErr;

	UpdateData(FALSE);
}

void CMainDlg::SetParams(CString &Op)
{
	UpdateData();
	m_Params.ConfigFile=m_ConfFile;
	m_Params.KeyPath	=m_KeyPath; 
	m_Params.Op			=Op; 
	m_Params.InOutFile	=m_InOutFile; 
	CComboBox	*cbo=(CComboBox	*)GetDlgItem(IDC_COMBO_ROOT);
	if ( (cbo) && (m_Root>=0) ) {
		CString	strElem="";
		cbo->SendMessage(CB_GETLBTEXT, m_Root, (LPARAM)(LPCSTR)strElem); 
		m_Params.Root=strElem;
	}

	//	Add to history lists
	AddToList(IDC_COMBO_CONF_FILE,m_ConfFile);
	AddToList(IDC_COMBO_KEY_PATH,m_KeyPath);
	AddToList(IDC_COMBO_IN_OUT_FILE,m_InOutFile);
}

void CMainDlg::AddToList(UINT ListID, CString &NewItem)
{
	CComboBox	*cbo=(CComboBox	*)GetDlgItem(ListID);
	if (cbo) {
		int LC=cbo->GetCount(); 
		if (LC>0) {
			CString	strElem;
			for (int i=0; i<LC; i++) {
				cbo->GetLBText(i, strElem.GetBuffer(255));
				strElem.ReleaseBuffer();
				if (strElem.CompareNoCase(NewItem)==0) {
					return;
				}
			}
			cbo->InsertString(0, NewItem);
		} else cbo->InsertString(0, NewItem);
	}
	return;	
}

void CMainDlg::OnButtonGetErrDesc() 
{
	// TODO: Add your control notification handler code here
	LPVOID	lpMsgBuf;
	DWORD	ErrorCode;
	UpdateData();
	if (m_Result.GetLength()==0) return;
	ErrorCode=atol(m_Result);
	if (!FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | 
						FORMAT_MESSAGE_FROM_SYSTEM | 
						FORMAT_MESSAGE_IGNORE_INSERTS,
						NULL,
						ErrorCode,
						MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
						(LPTSTR) &lpMsgBuf,
						0,
						NULL) ) {
	   // Handle the error.
	   MessageBox("Unknown!", "", MB_OK|MB_ICONINFORMATION);;
	}
	else {
		MessageBox((LPCTSTR)lpMsgBuf, "", MB_OK|MB_ICONINFORMATION);
		// Free the buffer.
		LocalFree( lpMsgBuf );
		
	}
	return;
}

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JOHN11
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France France
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