// CRC32Dlg.cpp : 实现文件
//#include "stdafx.h"
#include "CRC32.h"
#include "CRC32Dlg.h"
#include "afxdialogex.h"#ifdef _DEBUG
#define new DEBUG_NEW
#endifstatic unsigned short start_addr = 0x0080;
static unsigned short end_addr = 0xFFFB;
unsigned long sum=0;
unsigned char fpBuff[20*1024];unsigned long crc32_table[256] =
{0x00000000, 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
};// 用于应用程序“关于”菜单项的 CAboutDlg 对话框class CAboutDlg : public CDialogEx
{
public:CAboutDlg();// 对话框数据enum { IDD = IDD_ABOUTBOX };protected:virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV 支持// 实现
protected:DECLARE_MESSAGE_MAP()
};CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD)
{
}void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{CDialogEx::DoDataExchange(pDX);
}BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
END_MESSAGE_MAP()// CCRC32Dlg 对话框CCRC32Dlg::CCRC32Dlg(CWnd* pParent /*=NULL*/): CDialogEx(CCRC32Dlg::IDD, pParent)
{m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);// m_list = _T("");
}void CCRC32Dlg::DoDataExchange(CDataExchange* pDX)
{CDialogEx::DoDataExchange(pDX);// DDX_LBString(pDX, IDC_LIST1, m_list);DDX_Control(pDX, IDC_LIST1, m_list);
}BEGIN_MESSAGE_MAP(CCRC32Dlg, CDialogEx)ON_WM_SYSCOMMAND()ON_WM_PAINT()ON_WM_QUERYDRAGICON()ON_BN_CLICKED(Open_file, &CCRC32Dlg::OnBnClickedfile)ON_BN_CLICKED(CRC32_calculate, &CCRC32Dlg::OnBnClickedcalculate)ON_BN_CLICKED(Clear_data, &CCRC32Dlg::OnBnClickeddata)
END_MESSAGE_MAP()// CCRC32Dlg 消息处理程序BOOL CCRC32Dlg::OnInitDialog()
{CDialogEx::OnInitDialog();// 将“关于...”菜单项添加到系统菜单中。// IDM_ABOUTBOX 必须在系统命令范围内。ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);ASSERT(IDM_ABOUTBOX < 0xF000);CMenu* pSysMenu = GetSystemMenu(FALSE);if (pSysMenu != NULL){BOOL bNameValid;CString strAboutMenu;bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);ASSERT(bNameValid);if (!strAboutMenu.IsEmpty()){pSysMenu->AppendMenu(MF_SEPARATOR);pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);}}// 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动// 执行此操作SetIcon(m_hIcon, TRUE); // 设置大图标SetIcon(m_hIcon, FALSE); // 设置小图标// TODO: 在此添加额外的初始化代码return TRUE; // 除非将焦点设置到控件，否则返回 TRUE
}void CCRC32Dlg::OnSysCommand(UINT nID, LPARAM lParam)
{if ((nID & 0xFFF0) == IDM_ABOUTBOX){CAboutDlg dlgAbout;dlgAbout.DoModal();}else{CDialogEx::OnSysCommand(nID, lParam);}
}// 如果向对话框添加最小化按钮，则需要下面的代码
// 来绘制该图标。对于使用文档/视图模型的 MFC 应用程序，
// 这将由框架自动完成。void CCRC32Dlg::OnPaint()
{if (IsIconic()){CPaintDC dc(this); // 用于绘制的设备上下文SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);// 使图标在工作区矩形中居中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;// 绘制图标dc.DrawIcon(x, y, m_hIcon);}else{CDialogEx::OnPaint();}
}//当用户拖动最小化窗口时系统调用此函数取得光标
//显示。
HCURSOR CCRC32Dlg::OnQueryDragIcon()
{return static_cast<HCURSOR>(m_hIcon);
}unsigned long CCRC32Dlg::fast_crc32(unsigned long sum, unsigned char *p, unsigned long len)
{int i=5;m_list.AddString("文件中的每个数字生成的CRC32 校验码如下：");//输出checksum 到 列表框while (len--){if(i == 0)//从第三个字节开始生成CRC 校验码{p=p+3;i=9;}sum = crc32_table[(sum >> 24) ^ *p++] ^ (sum << 8);CString tmp;tmp.Format("%4x",sum); m_list.AddString(tmp);//输出checksum 到 列表框 UpdateData(FALSE);}return sum;
}unsigned long CCRC32Dlg::set_crc32_init_value(unsigned long start)
{unsigned long init = 0;unsigned long byte;int val;if(start){val = 32;while( val ){val -= 8;byte = (start >> val) & 0xFF;init = crc32_table[((init >> 24) ^ byte) & 0xFF] ^ (init << 8);}}return init;
}void CCRC32Dlg::OnBnClickedfile()//打开文件
{// TODO: 在此添加控件通知处理程序代码LPCSTR lpszPath = "c:\\comdata";SetCurrentDirectory( lpszPath );static char BASED_CODE szFilter[] = "文本文件(*.txt)|*.bin|所有文件(*.*)|*.*||";CFileDialog FileDlg( TRUE, NULL, NULL,OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,szFilter );FileDlg.m_ofn.lpstrInitialDir = lpszPath ;if( FileDlg.DoModal() ==IDOK ){CString strFileName = FileDlg.GetFileName( );CString strFileExt = FileDlg.GetFileExt( );CString lpstrName = FileDlg.GetPathName( );m_strSendFilePathName=lpstrName;UpdateData(FALSE);}
}void CCRC32Dlg::OnBnClickedcalculate()//crc32 calculate
{// TODO: 在此添加控件通知处理程序代码CFile fp;if(!(fp.Open((LPCTSTR)m_strSendFilePathName,CFile::modeRead))) {AfxMessageBox("Open file failed!");return;}fp.SeekToEnd();unsigned long fplength=fp.GetLength();m_nFileLength=fplength;
// char* fpBuff;//char fpBuff[10*1024];
// fpBuff=new char[fplength];fp.SeekToBegin();if(fp.Read(fpBuff,fplength)<1){fp.Close();return;}fp.Close();CString str_count;m_list.AddString("整个bin文件的长度为：");//输出checksum 到 列表框str_count.Format("%d",fplength);m_list.AddString(str_count);//输出整个文件的长度m_strTempSendFilePathName=m_strSendFilePathName;sum = set_crc32_init_value (CRC_INITIALVALUE);
/// sum = fast_crc32(sum, (unsigned char*)start_addr, end_addr - start_addr + 1);sum = fast_crc32(sum,fpBuff, fplength);CString stmp;m_list.AddString("整个文件生成的CRC32 校验码为：");//输出checksum 到 列表框stmp.Format("%4x",sum); m_list.AddString(stmp);//输出checksum 到 列表框/* if(sum!=__checksum){printf("Checksum failed: 0x%04lX (calculated) ""vs 0x%04lX (from linker)\n", sum, __checksum); }else{printf("* Checksum 0x%04lX is correct! *\n", __checksum);}*/UpdateData(FALSE);
}void CCRC32Dlg::OnBnClickeddata() //clear screen
{// TODO: 在此添加控件通知处理程序代码m_list.ResetContent(); //清除list列表框 UpdateData(FALSE);
}