exelockdlg.cpp

本程序能够在EXE程序运行之前弹出一个输入密码对话框

// exeLockDlg.cpp : implementation file
//

#include "stdafx.h"
#include "exeLock.h"
#include "exeLockDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CExeLockDlg dialog

CExeLockDlg::CExeLockDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CExeLockDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CExeLockDlg)
	m_chkbak = TRUE;
	m_filename = _T("");
	m_password = _T("");
	m_repeatpassword = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CExeLockDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CExeLockDlg)
	DDX_Check(pDX, IDC_CHKBAK, m_chkbak);
	DDX_Text(pDX, IDC_FILENAME, m_filename);
	DDX_Text(pDX, IDC_PASSWORD, m_password);
	DDV_MaxChars(pDX, m_password, 14);
	DDX_Text(pDX, IDC_REPEATPASSWORD, m_repeatpassword);
	DDV_MaxChars(pDX, m_repeatpassword, 14);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CExeLockDlg, CDialog)
	//{{AFX_MSG_MAP(CExeLockDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_CLOSE, OnClose)
	ON_BN_CLICKED(IDC_UNLOCK, OnUnlock)
	ON_BN_CLICKED(IDC_LOCK, OnLock)
	ON_BN_CLICKED(IDC_FILEOPEN, OnFileopen)
	ON_WM_DROPFILES()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CExeLockDlg message handlers

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

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// 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
	SetWindowPos(&wndTopMost,0,0,0,0,SWP_NOSIZE|SWP_NOMOVE);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CExeLockDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else if(nID==SC_CLOSE)
	{
		CDialog::OnCancel();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// 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 CExeLockDlg::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 CExeLockDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CExeLockDlg::OnOK() 
{
	//CDialog::OnOK();
}

void CExeLockDlg::OnCancel() 
{	
	//CDialog::OnCancel();
}

void CExeLockDlg::OnFileopen() 
{
	CFileDialog fdlg(TRUE,"exe","*.exe",NULL,"可执行文件 (*.exe)|*.exe");
	if(fdlg.DoModal()==IDOK)
	{	
		SetDlgItemText(IDC_FILENAME,fdlg.GetPathName());
	}
}

void CExeLockDlg::OnLock() 
{
	CFile	file,shellfile;
	CString	csFilename,csSection[8],csPassword,csRepeatPassword;
	CHAR szWaterMark[10];

	GetDlgItemText(IDC_FILENAME,csFilename);
	GetDlgItemText(IDC_PASSWORD,csPassword);
	GetDlgItemText(IDC_REPEATPASSWORD,csRepeatPassword);

	if(csPassword!=csRepeatPassword)
	{
		MessageBox("你输入的密码不相同,请重新输入!");
		return;
	}

	if(m_chkbak)
	{
		if(!CopyFile(csFilename,csFilename+".bak",FALSE))
			MessageBox("不能备份文件！",csFilename);
	}

	if(!file.Open(csFilename,CFile::modeReadWrite|CFile::shareDenyRead))
	{
		MessageBox("不能打开文件！",csFilename);
		return;
	}
	
	file.Seek(-8,CFile::end);
	file.Read(szWaterMark,8);
	if(!strncmp(szWaterMark,"yangboyu",8))
	{
		MessageBox("文件已经加密!");
		file.Close();
		return;
	}




	UINT i;	
	DWORD dwitImageBase,dwItCodeVirtualAddress,dwMyImageBase,dwMySectionVirtualAddress,dwSectionPading;
	DWORD dwitImageEntryPoint,dwitImportTableEntryPoint;
	BOOL  bisMadeImportSectionWritabled=FALSE;
	

	IMAGE_DOS_HEADER dosHeader;
	IMAGE_NT_HEADERS ntHeader,ntHeaderBY;	
	IMAGE_SECTION_HEADER section,sectionBY;


	file.SeekToBegin();
	file.Read(&dosHeader,sizeof(IMAGE_DOS_HEADER));

	file.Seek(dosHeader.e_lfanew,CFile::begin);
	file.Read(&ntHeader,sizeof(IMAGE_NT_HEADERS));

	//记录原来的入口地址等
	dwitImageBase				=ntHeader.OptionalHeader.ImageBase ;
	dwitImageEntryPoint			=ntHeader.OptionalHeader.AddressOfEntryPoint;
	dwitImportTableEntryPoint	=ntHeader.OptionalHeader.DataDirectory[1].VirtualAddress ; 

	WORD wMove;
	//写入Section
	for ( i=0; i < ntHeader.FileHeader.NumberOfSections ; i++)
	{
		file.Read(&section,sizeof(IMAGE_SECTION_HEADER));
		csSection[i]=section.Name;

		//把有import表的section设为可写
		if(!bisMadeImportSectionWritabled)
			if(section.VirtualAddress < dwitImportTableEntryPoint)
				if((section.VirtualAddress+section.SizeOfRawData)>dwitImportTableEntryPoint)
				{
					section.Characteristics |=0x80000000;
					file.Seek(-sizeof(IMAGE_SECTION_HEADER),CFile::current);
					file.Write(&section,sizeof(IMAGE_SECTION_HEADER));
					bisMadeImportSectionWritabled=TRUE;
				}
	}

	sectionBY=section;
	sectionBY.Name[0]='.';
	sectionBY.Name[1]='B';
	sectionBY.Name[2]='O';