// 鑰匙盤啟動程序Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "鑰匙盤啟動程序.h"
#include "鑰匙盤啟動程序Dlg.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()

/////////////////////////////////////////////////////////////////////////////
// CMyDlg dialog

CMyDlg::CMyDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMyDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMyDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
   	CString str;
	m_sn=_T("shengda2000");   //設(shè)置啟動密碼
	str.Format("%s",m_sn);
	m_snlen = str.GetLength();//計算密碼長度
 }

void CMyDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMyDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMyDlg, CDialog)
	//{{AFX_MSG_MAP(CMyDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyDlg message handlers

BOOL CMyDlg::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
	/******************************************************/
	
	if(!ReadSN(0,79,0))  //讀取密碼，失敗退出系統(tǒng)
	{
	    AfxMessageBox("error");
	 	PostQuitMessage(1);
	}

	 
	if( Compare()!=1)  //比較密碼，如果是正確的密碼則進(jìn)入系統(tǒng)
	{
		AfxMessageBox("error");
	 	PostQuitMessage(1);
	}
	else
		AfxMessageBox("正確");
    
   
	/********************************************************/
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CMyDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	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 CMyDlg::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 CMyDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}
/*********************************************************************
讀取密碼
輸入?yún)?shù) head 磁頭；track 磁道； sector 扇區(qū)
返回值：1 成功 ，0 失敗
2003 12 12 瑞 
**********************************************************************/
BOOL CMyDlg::ReadSN(int head, int track, int sector)
{
	int LogicalSector;          //目標(biāo)扇區(qū)
	HANDLE hDevice ;            //設(shè)備句柄
  	DWORD bytesread ;           //讀到的字符數(shù)目
   
	
	LogicalSector = CaculatorSector2000( head,   track,   sector);
	                            //計算目標(biāo)扇區(qū)  
    memset(m_readsn ,0,512 );	//打開驅(qū)動器使用函數(shù) CreateFile  
	hDevice = CreateFile("\\\\.\\A:",GENERIC_READ, FILE_SHARE_READ   | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL); 
    if (hDevice == NULL) 
	{
		AfxMessageBox("請插入軟盤");
		return false;
	}
    
    SetFilePointer (hDevice,(LogicalSector*512),NULL,FILE_BEGIN); 
                               //移動文件指針(實際為扇區(qū)指針)到需要讀取位置
    if (!ReadFile( hDevice,m_readsn,512 ,&bytesread,NULL) )
		                       //讀扇區(qū)數(shù)據(jù)
	{
	    AfxMessageBox("請插入正確的啟動盤");
		CloseHandle(hDevice); 
		return   false;
	}
//   CString  str;
	CloseHandle(hDevice); 
//	str.Format("%s",m_readsn);
//	int numm = str.GetLength();
//	str.Format("數(shù)目：%d \n內(nèi)容：%s",numm,m_readsn);
//	AfxMessageBox(str);

   return true;

}
/********************************************************************
win2000下計算要讀取的目標(biāo)扇區(qū)
2003 12 12 瑞
*********************************************************************/
int CMyDlg::CaculatorSector2000(int head, int track, int sector)
{
 	int LogicalSector=0;
	LogicalSector = sector + track*18 + head*80*18;//一般格式化A盤 head = 0;
	return  LogicalSector;
}
/********************************************************************
判斷讀到的是否為正確密碼，是返回 1 否則 返回 -1
*////////////////////////////////////////////////////////////////////

int CMyDlg::Compare()
{
 
   	int len=m_snlen;
	for(int i=0;i<len;i++)
	{
		if(m_sn[i]!=m_readsn[i]) //在比較范圍內(nèi)不想等則，返回-1
			return -1;
	}
    
	return  1;
}