// RijndView.cpp : implementation of the CRijndView class
//

#include "stdafx.h"
#include "Rijnd.h"

#include "RijndDoc.h"
#include "RijndView.h"
#include "rijndael.h"

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

/////////////////////////////////////////////////////////////////////////////
// CRijndView

IMPLEMENT_DYNCREATE(CRijndView, CFormView)

BEGIN_MESSAGE_MAP(CRijndView, CFormView)
	//{{AFX_MSG_MAP(CRijndView)
	ON_BN_CLICKED(IDC_ENCRYPTION, OnEncryption)
	ON_BN_CLICKED(IDC_UNCRYPTION, OnUncryption)
	ON_BN_CLICKED(IDC_ENCRYPTION_SELECT, OnEncryptionSelect)
	ON_BN_CLICKED(IDC_UNCRYPTION_SELECT, OnUncryptionSelect)
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CFormView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CFormView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CFormView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CRijndView construction/destruction

CRijndView::CRijndView()
	: CFormView(CRijndView::IDD)
{
	//{{AFX_DATA_INIT(CRijndView)
	m_miyao = _T("shufuxiashufuxiashufuxiashufuxia");
	//}}AFX_DATA_INIT
	// TODO: add construction code here

}

CRijndView::~CRijndView()
{
}

void CRijndView::DoDataExchange(CDataExchange* pDX)
{
	CFormView::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CRijndView)
	DDX_Text(pDX, IDC_KEY, m_miyao);
	//}}AFX_DATA_MAP
}

BOOL CRijndView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CFormView::PreCreateWindow(cs);
}

void CRijndView::OnInitialUpdate()
{
	CFormView::OnInitialUpdate();
	GetParentFrame()->RecalcLayout();
	ResizeParentToFit();

}

/////////////////////////////////////////////////////////////////////////////
// CRijndView printing

BOOL CRijndView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CRijndView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CRijndView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

void CRijndView::OnPrint(CDC* pDC, CPrintInfo* /*pInfo*/)
{
	// TODO: add customized printing code here
}

/////////////////////////////////////////////////////////////////////////////
// CRijndView diagnostics

#ifdef _DEBUG
void CRijndView::AssertValid() const
{
	CFormView::AssertValid();
}

void CRijndView::Dump(CDumpContext& dc) const
{
	CFormView::Dump(dc);
}

CRijndDoc* CRijndView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CRijndDoc)));
	return (CRijndDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CRijndView message handlers

void CRijndView::OnEncryption() 
{
	// TODO: Add your control notification handler code here
	k_bit=(unsigned char*)m_miyao.GetBuffer(8);
	m_miyao.ReleaseBuffer();

	unsigned char *e_bit;
	e_bit=new unsigned char [length];
	BeginWaitCursor();
	{
		 rij.set_key(k_bit,256);

		for(int j=0;j<N;j++)
		{
		 rij.encrypt(var,e_bit);
			var+=16;
			e_bit+=16;
		}
		var=var-16*N;
		e_bit=e_bit-16*N;
	}
	EndWaitCursor();



		char szFilter[] = "all Files(*.*)|*.*||";
		CFileDialog FileDlg( FALSE, NULL, NULL, OFN_HIDEREADONLY, szFilter );
		FileDlg.m_ofn.lpstrTitle="加密文件存為";

		if( FileDlg.DoModal() == IDOK ){
			BeginWaitCursor();
			CString PathName = FileDlg.GetPathName();			
			PathName=PathName+name;
			CFile f;
			f.Open(PathName,
			CFile::modeCreate|CFile::modeWrite);
			f.Write(e_bit,length);
			f.Close();
			EndWaitCursor();
		}
			m_jiami="加密結束！";
			MessageBox(m_jiami);
			delete e_bit;
			UpdateData(false);
			Invalidate(true);
	
}

void CRijndView::OnUncryption() 
{
	// TODO: Add your control notification handler code here
		k_bit=(unsigned char*)m_miyao.GetBuffer(8);
	m_miyao.ReleaseBuffer();						//密鑰的獲取
	unsigned char *m_bit;
	m_bit=new unsigned char [length];
	BeginWaitCursor();
	{
	rij.set_key(k_bit,256);
		for(int j=0;j<N;j++)
		{
			rij.decrypt(var,m_bit);
			m_bit+=16;
			var+=16;
		}
		m_bit=m_bit-16*N;
		var=var-16*N;
	}
	EndWaitCursor();

		char szFilter[] = "all Files(*.*)|*.*||";
		CFileDialog FileDlg( FALSE, NULL, NULL, OFN_HIDEREADONLY, szFilter );
		FileDlg.m_ofn.lpstrTitle="解密文件存為";
		if( FileDlg.DoModal() == IDOK ){
			BeginWaitCursor();
			CString PathName = FileDlg.GetPathName();
			PathName=PathName+name;

			CFile f;
    		f.Open(PathName,
			CFile::modeCreate|CFile::modeWrite);
			f.Write(m_bit,length);
			f.Close();
			CString string;
			string="notepad"+PathName;
			WinExec(string,SW_SHOW);

			m_jiami="解密結束！";
			MessageBox(m_jiami);
			EndWaitCursor();
		}

			delete m_bit;
			UpdateData(false);
			Invalidate(true);
	
}

void CRijndView::OnEncryptionSelect() 
{
	// TODO: Add your control notification handler code here
	char szFilter[] = "all Files(*.*)|*.*||";
	CFileDialog FileDlg( TRUE, NULL, NULL, OFN_HIDEREADONLY, szFilter );

	if( FileDlg.DoModal() == IDOK )
	{
		BeginWaitCursor();
		CString PathName = FileDlg.GetPathName();
		CString filename=FileDlg.GetFileName();
		CString first=FileDlg.GetFileTitle();
		name=filename.Right(filename.GetLength()-first.GetLength());
		{
			CFile f2;
			if(f2.Open(PathName,CFile::modeRead|CFile::typeBinary  )==FALSE)
			return;
			length=f2.GetLength();
			
			N=length/16;
			if(length%16==0)
			{
				N=N;
			}
			else
			{
				length=length+16-length%16;
				N=N+1;
			}

			var=new unsigned char [length];

			f2.Read(var,f2.GetLength());

			if(f2.GetLength()%16!=0)
			{
				for(i=0;i<(int)(16-f2.GetLength()%16);i++)
				{
					var[length-16+f2.GetLength()%16+i]=' ';
				}
			}
			
			f2.Close();
			Invalidate(true);

		}
		EndWaitCursor();
	}
}

void CRijndView::OnUncryptionSelect() 
{
	// TODO: Add your control notification handler code here
		char szFilter[] = "all Files(*.*)|*.*||";
	CFileDialog FileDlg( TRUE, NULL, NULL, OFN_HIDEREADONLY, szFilter );

	if( FileDlg.DoModal() == IDOK )
	{
		BeginWaitCursor();
		CString PathName = FileDlg.GetPathName();
		CString filename=FileDlg.GetFileName();
		CString first=FileDlg.GetFileTitle();
		name=filename.Right(filename.GetLength()-first.GetLength());

		{
			CFile f2;
			if(f2.Open(PathName,CFile::modeRead|CFile::typeBinary  )==FALSE)
			return;
			length=f2.GetLength();

			var=new unsigned char [length];
			N=length/16;
			f2.Read(var,f2.GetLength());			
			f2.Close();		
			Invalidate(true);
		}
		EndWaitCursor();
	}
}