md5testdlg.cpp

可以计算文件MD5校验码、CRC校验码、校验和

// Md5TestDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Md5Test.h"
#include "Md5TestDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/* Number of bytes to read at once.  */
# define BUFLEN (1 << 16)

static unsigned long const crctab[256] =
{
  0x0,
  0x04C11DB7, 0x09823B6E, 0x0D4326D9, 0x130476DC, 0x17C56B6B,
  0x1A864DB2, 0x1E475005, 0x2608EDB8, 0x22C9F00F, 0x2F8AD6D6,
  0x2B4BCB61, 0x350C9B64, 0x31CD86D3, 0x3C8EA00A, 0x384FBDBD,
  0x4C11DB70, 0x48D0C6C7, 0x4593E01E, 0x4152FDA9, 0x5F15ADAC,
  0x5BD4B01B, 0x569796C2, 0x52568B75, 0x6A1936C8, 0x6ED82B7F,
  0x639B0DA6, 0x675A1011, 0x791D4014, 0x7DDC5DA3, 0x709F7B7A,
  0x745E66CD, 0x9823B6E0, 0x9CE2AB57, 0x91A18D8E, 0x95609039,
  0x8B27C03C, 0x8FE6DD8B, 0x82A5FB52, 0x8664E6E5, 0xBE2B5B58,
  0xBAEA46EF, 0xB7A96036, 0xB3687D81, 0xAD2F2D84, 0xA9EE3033,
  0xA4AD16EA, 0xA06C0B5D, 0xD4326D90, 0xD0F37027, 0xDDB056FE,
  0xD9714B49, 0xC7361B4C, 0xC3F706FB, 0xCEB42022, 0xCA753D95,
  0xF23A8028, 0xF6FB9D9F, 0xFBB8BB46, 0xFF79A6F1, 0xE13EF6F4,
  0xE5FFEB43, 0xE8BCCD9A, 0xEC7DD02D, 0x34867077, 0x30476DC0,
  0x3D044B19, 0x39C556AE, 0x278206AB, 0x23431B1C, 0x2E003DC5,
  0x2AC12072, 0x128E9DCF, 0x164F8078, 0x1B0CA6A1, 0x1FCDBB16,
  0x018AEB13, 0x054BF6A4, 0x0808D07D, 0x0CC9CDCA, 0x7897AB07,
  0x7C56B6B0, 0x71159069, 0x75D48DDE, 0x6B93DDDB, 0x6F52C06C,
  0x6211E6B5, 0x66D0FB02, 0x5E9F46BF, 0x5A5E5B08, 0x571D7DD1,
  0x53DC6066, 0x4D9B3063, 0x495A2DD4, 0x44190B0D, 0x40D816BA,
  0xACA5C697, 0xA864DB20, 0xA527FDF9, 0xA1E6E04E, 0xBFA1B04B,
  0xBB60ADFC, 0xB6238B25, 0xB2E29692, 0x8AAD2B2F, 0x8E6C3698,
  0x832F1041, 0x87EE0DF6, 0x99A95DF3, 0x9D684044, 0x902B669D,
  0x94EA7B2A, 0xE0B41DE7, 0xE4750050, 0xE9362689, 0xEDF73B3E,
  0xF3B06B3B, 0xF771768C, 0xFA325055, 0xFEF34DE2, 0xC6BCF05F,
  0xC27DEDE8, 0xCF3ECB31, 0xCBFFD686, 0xD5B88683, 0xD1799B34,
  0xDC3ABDED, 0xD8FBA05A, 0x690CE0EE, 0x6DCDFD59, 0x608EDB80,
  0x644FC637, 0x7A089632, 0x7EC98B85, 0x738AAD5C, 0x774BB0EB,
  0x4F040D56, 0x4BC510E1, 0x46863638, 0x42472B8F, 0x5C007B8A,
  0x58C1663D, 0x558240E4, 0x51435D53, 0x251D3B9E, 0x21DC2629,
  0x2C9F00F0, 0x285E1D47, 0x36194D42, 0x32D850F5, 0x3F9B762C,
  0x3B5A6B9B, 0x0315D626, 0x07D4CB91, 0x0A97ED48, 0x0E56F0FF,
  0x1011A0FA, 0x14D0BD4D, 0x19939B94, 0x1D528623, 0xF12F560E,
  0xF5EE4BB9, 0xF8AD6D60, 0xFC6C70D7, 0xE22B20D2, 0xE6EA3D65,
  0xEBA91BBC, 0xEF68060B, 0xD727BBB6, 0xD3E6A601, 0xDEA580D8,
  0xDA649D6F, 0xC423CD6A, 0xC0E2D0DD, 0xCDA1F604, 0xC960EBB3,
  0xBD3E8D7E, 0xB9FF90C9, 0xB4BCB610, 0xB07DABA7, 0xAE3AFBA2,
  0xAAFBE615, 0xA7B8C0CC, 0xA379DD7B, 0x9B3660C6, 0x9FF77D71,
  0x92B45BA8, 0x9675461F, 0x8832161A, 0x8CF30BAD, 0x81B02D74,
  0x857130C3, 0x5D8A9099, 0x594B8D2E, 0x5408ABF7, 0x50C9B640,
  0x4E8EE645, 0x4A4FFBF2, 0x470CDD2B, 0x43CDC09C, 0x7B827D21,
  0x7F436096, 0x7200464F, 0x76C15BF8, 0x68860BFD, 0x6C47164A,
  0x61043093, 0x65C52D24, 0x119B4BE9, 0x155A565E, 0x18197087,
  0x1CD86D30, 0x029F3D35, 0x065E2082, 0x0B1D065B, 0x0FDC1BEC,
  0x3793A651, 0x3352BBE6, 0x3E119D3F, 0x3AD08088, 0x2497D08D,
  0x2056CD3A, 0x2D15EBE3, 0x29D4F654, 0xC5A92679, 0xC1683BCE,
  0xCC2B1D17, 0xC8EA00A0, 0xD6AD50A5, 0xD26C4D12, 0xDF2F6BCB,
  0xDBEE767C, 0xE3A1CBC1, 0xE760D676, 0xEA23F0AF, 0xEEE2ED18,
  0xF0A5BD1D, 0xF464A0AA, 0xF9278673, 0xFDE69BC4, 0x89B8FD09,
  0x8D79E0BE, 0x803AC667, 0x84FBDBD0, 0x9ABC8BD5, 0x9E7D9662,
  0x933EB0BB, 0x97FFAD0C, 0xAFB010B1, 0xAB710D06, 0xA6322BDF,
  0xA2F33668, 0xBCB4666D, 0xB8757BDA, 0xB5365D03, 0xB1F740B4
};

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
extern  BOOL CalcMD5(LPCTSTR m_filename,unsigned char Orgin[16]); 
extern  DWORD CalcChksum(LPCTSTR m_filename); 
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()

/////////////////////////////////////////////////////////////////////////////
// CMd5TestDlg dialog

CMd5TestDlg::CMd5TestDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMd5TestDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMd5TestDlg)
	m_MD5 = _T("");
	m_Filename = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMd5TestDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMd5TestDlg)
	DDX_Text(pDX, IDC_EDIT1, m_MD5);
	DDX_Text(pDX, IDC_EDIT2, m_Filename);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMd5TestDlg, CDialog)
	//{{AFX_MSG_MAP(CMd5TestDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(MD5, OnMD5)
	ON_BN_CLICKED(MD6, OnChksum)
	ON_BN_CLICKED(MD7, OnCRC32)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMd5TestDlg message handlers

BOOL CMd5TestDlg::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
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CMd5TestDlg::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 CMd5TestDlg::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();
	}
}

/*****************************************************************
** 函数名:GetPath
** 输 入: m_hWnd调用窗口句柄
** 输 出: CString strPath
**        strPath非空, 表示用户选择的文件夹路径
**        strPath为空, 表示用户点击了“取消”键，取消选择
** 功能描述:显示“选择文件夹”对话框，让用户选择文件夹
****************************************************************/

CString GetPath(HWND m_hWnd )
{
 CString strPath = "";
 BROWSEINFO bInfo;
 ZeroMemory(&bInfo, sizeof(bInfo));
 bInfo.hwndOwner = m_hWnd;
 bInfo.lpszTitle = _T("请选择路径: ");
 bInfo.ulFlags = BIF_BROWSEINCLUDEFILES ;//BIF_RETURNONLYFSDIRS;   
 
 LPITEMIDLIST lpDlist; //用来保存返回信息的IDList
 lpDlist = SHBrowseForFolder(&bInfo) ; //显示选择对话框
 if(lpDlist != NULL)  //用户按了确定按钮
 {
  TCHAR chPath[512]; //用来存储路径的字符串
  SHGetPathFromIDList(lpDlist, chPath);//把项目标识列表转化成字符串
  strPath = chPath; //将TCHAR类型的字符串转换为CString类型的字符串
 }
 return strPath;
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CMd5TestDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}


void CMd5TestDlg::OnMD5() 
{
	// TODO: Add your control notification handler code here
	unsigned char O[16];
	char m[512]={0};
	HWND m_hWnd = GetSafeHwnd(); 
	CString strPath = GetPath(m_hWnd);
	m_Filename = strPath;
	UpdateData(false);
	CalcMD5(strPath,O);
	sprintf(m,"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
		O[0],O[1],O[2],O[3],O[4],O[5],O[6],O[7],O[8],O[9],O[10],O[11],O[12],O[13],O[14],O[15]);
	m_Filename = strPath;
	m_MD5 = m;
	UpdateData(false);
}

void CMd5TestDlg::OnChksum() 
{
	// TODO: Add your control notification handler code here
	char m[512]={0};
	DWORD Chk;
	HWND m_hWnd = GetSafeHwnd(); 
	CString strPath = GetPath(m_hWnd);
	m_Filename = strPath;
	UpdateData(false);
	Chk = CalcChksum(strPath);
	sprintf(m,"%0X",Chk);
	m_Filename = strPath;
	m_MD5 = m;
	UpdateData(false);
}

void CMd5TestDlg::OnCRC32() 
{
	// TODO: Add your control notification handler code here
	char m[512]={0};
	char nLen[10];
	char nCRC[100];
	HWND m_hWnd = GetSafeHwnd(); 
	CString strPath = GetPath(m_hWnd);
	m_Filename = strPath;
	UpdateData(false);
	nCheckSumFile(NULL,strPath,nCRC,nLen);
	m_Filename = strPath;
	strcpy(m,nCRC);
	strcat(m," -- ");
	strcat(m,nLen);
	strcat(m,"bytes");
	m_MD5 = m;
	UpdateData(false);
	
}


unsigned long nCheckSumBuf( const char *pszBuf, long nBytes, unsigned long nCRC )
{
	while (nBytes--)
	{
		nCRC = (nCRC << 8) ^ crctab[((nCRC >> 24) ^ *(pszBuf++)) & 0xFF];
	}
	return nCRC;
}

/* Calculate and fill in the checksum and length in bytes
   of file FILE.
   Return 0 if successful, -1 if an error occurs. */

int nCheckSumFile(const char *pszDirectory, const char *pszFile, char *pnCRC, char *pnLength )
{
	unsigned char	caBuf[BUFLEN];
	unsigned long	nCRC = 0;
	unsigned long   tCRC = 0;
	int i=0;
	unsigned long	nLength = 0;
	long			nBytesRead;
	register FILE	*fp;
	char			caFullPath[_MAX_PATH];

	caFullPath[0] = '\0';
	if ( pszDirectory != NULL )
	{
		strcpy( caFullPath, pszDirectory );
		strcat( caFullPath, "\\" );
	}
	strcat( caFullPath, pszFile );
	fp = fopen (caFullPath, "rb");
	if (fp == NULL)
	{
		return -1;
	}

#if 0
	/* Read input in BINARY mode, unless it is a console device.  */
	SET_BINARY (fileno (fp));
#endif

	while ((nBytesRead = fread (caBuf, 1, BUFLEN, fp)) > 0)
	{
		unsigned char *cp = caBuf;

		nLength += nBytesRead;
		nCRC	= nCheckSumBuf( (const char *)cp, nBytesRead, nCRC );
	}

	if (ferror (fp))
	{
		return -2;
	}

	if (fclose (fp) == EOF)
	{
		return -3;
	}

	// now checksum the length
	nBytesRead	= nLength;
	while (nBytesRead > 0)
	{
		nCRC	= (nCRC << 8) ^ crctab[((nCRC >> 24) ^ nBytesRead) & 0xFF];
		nBytesRead >>= 8;
	}

	nCRC = ~nCRC & 0xFFFFFFFF;
/*	for(i=0;i<4;i++)
	{
		tCRC = tCRC<<8;
		tCRC = tCRC | (nCRC & 0x000000FF);
		nCRC = nCRC>>8;
	}
*/

	sprintf(pnCRC,"%0lX",nCRC);
//	*pnLength	= nLength;
	sprintf(pnLength,"%0ld",nLength);

	return 0;
}