mailencryptdlg.cpp

利用网络信息加密技术实现电子邮件的安全传输。

// MailEncryptDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MailEncrypt.h"
#include "MailEncryptDlg.h"

#include "Idea.h"
#include "SMTP.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()

/////////////////////////////////////////////////////////////////////////////
// CMailEncryptDlg dialog

CMailEncryptDlg::CMailEncryptDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMailEncryptDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMailEncryptDlg)
	m_strFrom = _T("[e-mail]");
	m_strKey = _T("");
	m_nPort = 25;
	m_strSmtpServer = _T("smtp.163.com");
	m_strSubject = _T("问候");
	m_strBody = _T("");
	m_strTo = _T("[e-mail]");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMailEncryptDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMailEncryptDlg)
	DDX_Control(pDX, IDC_CHECK_ENCRYPT, m_btnEncrypt);
	DDX_Text(pDX, IDC_EDIT_FROM, m_strFrom);
	DDX_Text(pDX, IDC_EDIT_KEY, m_strKey);
	DDV_MaxChars(pDX, m_strKey, 16);
	DDX_Text(pDX, IDC_EDIT_PORT, m_nPort);
	DDX_Text(pDX, IDC_EDIT_SMTPSERVER, m_strSmtpServer);
	DDX_Text(pDX, IDC_EDIT_SUBJECT, m_strSubject);
	DDX_Text(pDX, IDC_EDIT_TEXT, m_strBody);
	DDX_Text(pDX, IDC_EDIT_TO, m_strTo);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMailEncryptDlg, CDialog)
	//{{AFX_MSG_MAP(CMailEncryptDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_CHECK_ENCRYPT, OnCheckEncrypt)
	ON_BN_CLICKED(ID_BUTTON_SEND, OnButtonSend)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMailEncryptDlg message handlers
CString m_strAfterEncrypt;
#define MAX_MAIL_LENGTH 1024*10
BOOL CMailEncryptDlg::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 CMailEncryptDlg::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 CMailEncryptDlg::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 CMailEncryptDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CMailEncryptDlg::OnCheckEncrypt() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	CIdea idea;
	CString temp;
	int len = m_strBody.GetLength();
	
	if(m_btnEncrypt.GetCheck())
	{
		char * pszKey = m_strKey.GetBuffer(MAX_MAIL_LENGTH);
		char *pszBody = m_strBody.GetBuffer(MAX_MAIL_LENGTH);
		char * pszTemp = temp.GetBuffer(MAX_MAIL_LENGTH);
		pszTemp[len+1]='\0';
		idea.SetKey((unsigned char *)pszKey);
		idea.EnString((unsigned char *)pszBody,(unsigned char *)pszTemp);
		m_strKey.ReleaseBuffer();
		m_strBody.ReleaseBuffer();
		temp.ReleaseBuffer();
		m_strAfterEncrypt = temp+'\0';
		MessageBox("信件已被成功加密！");
		GetDlgItem(IDC_EDIT_KEY)->EnableWindow(FALSE);
	}
	else
		GetDlgItem(IDC_EDIT_KEY)->EnableWindow(TRUE);
}

void CMailEncryptDlg::OnButtonSend() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	CSMTP smtp(m_strSmtpServer,m_nPort);
	CMailMessage msg;
	msg.m_strFrom = m_strFrom;
	msg.m_strTo = m_strTo;
	msg.m_strSubject = m_strSubject;
	msg.m_strBody = m_strBody;

	if(!smtp.Connect())
	{
		AfxMessageBox(smtp.GetLastError());
		return;
	}
	if(!smtp.SendMessage(&msg))
	{
		AfxMessageBox(smtp.GetLastError());
		smtp.DisConnect();
		return;
	}
	smtp.DisConnect();
	AfxMessageBox("信件成功发送！");
}