httpfilterdlg.cpp

The C++ Client Edition contains a full set of C++ class libraries, with client side source code for

// HTTPFilterDlg.cpp : implementation file
//

#include "stdafx.h"
#include "HTTPFilter.h"
#include "HTTPFilterDlg.h"
#include ".\httpfilterdlg.h"


#ifdef _DEBUG
#define new DEBUG_NEW
#endif

/* Global program variables */
SProgramVariables			g_ProgVar;

// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	enum { IDD = IDD_ABOUTBOX };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

// Implementation
protected:
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()


// CHTTPFilterDlg dialog



CHTTPFilterDlg::CHTTPFilterDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CHTTPFilterDlg::IDD, pParent),
	m_pFiletLog(NULL),
	m_pProcessPkt(NULL)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CHTTPFilterDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_EDIT_BANLIST, m_edtBlackLstPath);
	DDX_Control(pDX, IDC_COMBO_IF, m_cbxInterface);
	DDX_Control(pDX, IDC_LIST_LOG, m_lstLog);
}

BEGIN_MESSAGE_MAP(CHTTPFilterDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDC_BUTTON_BROWSE, OnBnClickedButtonBrowse)
	ON_CBN_SELCHANGE(IDC_COMBO_IF, OnCbnSelchangeComboIf)
	ON_BN_CLICKED(IDC_BUTTON1, OnBnClickedButtonStart)
	ON_BN_CLICKED(IDC_BUTTON2, OnBnClickedButtonStop)
	ON_WM_TIMER()
END_MESSAGE_MAP()


// CHTTPFilterDlg message handlers

BOOL CHTTPFilterDlg::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

	/* Load program variables and store them in a global struct variable */
	LoadINI();

	m_lstLog.InsertString(m_lstLog.GetCount(),"Init loaded.");
	
	/* Filter object is a place which holds access to the blacklist */
	m_pFiletLog = new CFilterLog();// two way logger

	/* Instansiate the main filtering object of the program */
	m_pProcessPkt = new CProcessPacket(m_pFiletLog);
	

	if (g_ProgVar.m_szAdapterName != "")
	{
		/* Retrieve IP address corresponding to each system adapter */
		FetchInterfaceIPAddress();
	}

	

	// Load Controls
	GetDlgItem(IDC_STATIC_IPADDRESS)->SetWindowText(g_ProgVar.m_szLocalIPAddr);
	m_edtBlackLstPath.SetWindowText(g_ProgVar.m_szLstFilterPath);
	
	/* Showing adapters and their IP address in a combo box */
	int i = 0;
	PIP_ADAPTER_INFO pAdapterInfo = m_pProcessPkt->m_AdapterInfo;		
	do {
		m_cbxInterface.InsertString(i, pAdapterInfo->Description);

		if (g_ProgVar.m_szAdapterName == pAdapterInfo->AdapterName)
		{
			m_cbxInterface.SetCurSel(i);
		}
		i++;
		pAdapterInfo = pAdapterInfo->Next;    // Progress through
	}
	while(pAdapterInfo);  
	
/* Timer mainly used for logging */
	SetTimer(1, 300, NULL);
	
	
	UpdateData(FALSE);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CHTTPFilterDlg::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 CHTTPFilterDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<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 function to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CHTTPFilterDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}

void CHTTPFilterDlg::LoadINI()
{

	char dirname[256];
	GetCurrentDirectory(256, dirname);

	/* INI must be inside executable binary */
	char* filename = strcat(dirname, "\\httpfilter.ini");
	char szRet[256];
	

	

	GetPrivateProfileString("Settings",
		"BlackList",
		0,
		szRet,
		256,
		filename);

	
	g_ProgVar.m_szLstFilterPath = szRet;
	ZeroMemory(szRet, 256);
	


	GetPrivateProfileString("Settings",
		"SourceAdapter",
		0,
		szRet,
		256,
		filename);
	

	g_ProgVar.m_szAdapterName = szRet;
	
	
}

void CHTTPFilterDlg::SaveINI()
{
	char dirname[256];
	GetCurrentDirectory(256, dirname);

	char* filename = strcat(dirname, "\\httpfilter.ini");

	WritePrivateProfileString("Settings",
						"SourceAdapter",
						g_ProgVar.m_szAdapterName,
						filename);

	WritePrivateProfileString("Settings",
							"BlackList",
							g_ProgVar.m_szLstFilterPath,
							filename );


	
}
void CHTTPFilterDlg::OnBnClickedButtonBrowse()
{
	// TODO: Add your control notification handler code here
	char* filters = "BlackList Files (*.ban)|*.ban|All Files (*.*)|*.*||";
	CFileDialog fileDlg(TRUE,
						"ban",
						"*.ban",
						OFN_FILEMUSTEXIST| OFN_HIDEREADONLY,
						filters
						);
	if (fileDlg.DoModal() == IDOK)
	{		
		g_ProgVar.m_szLstFilterPath = fileDlg.GetPathName();

		m_edtBlackLstPath.SetWindowText(g_ProgVar.m_szLstFilterPath);
		UpdateData(FALSE);
	}
	
}

void CHTTPFilterDlg::FetchInterfaceIPAddress()
{	
	PIP_ADAPTER_INFO pAdapterInfo = m_pProcessPkt->m_AdapterInfo;		
	do {
		if (pAdapterInfo->AdapterName == g_ProgVar.m_szAdapterName)
		{			
			g_ProgVar.m_szLocalIPAddr = pAdapterInfo->IpAddressList.IpAddress.String;	

			break;
		}
		pAdapterInfo = pAdapterInfo->Next;    // Progress through
	}
	while(pAdapterInfo);  
}

void CHTTPFilterDlg::OnCancel() 
{
	// TODO: Add extra cleanup here
	KillTimer(1);

	/* Save program variables in INI */
	SaveINI();

	if (m_pFiletLog)
		delete m_pFiletLog;
	if (m_pProcessPkt)
		delete m_pProcessPkt;
	CDialog::OnCancel();
}

void CHTTPFilterDlg::OnCbnSelchangeComboIf()
{
	// TODO: Add your control notification handler code here
	int idx = m_cbxInterface.GetCurSel();	
	g_ProgVar.m_szAdapterName = m_pProcessPkt->m_AdapterInfo[idx].AdapterName;
	g_ProgVar.m_szLocalIPAddr = m_pProcessPkt->m_AdapterInfo[idx].IpAddressList.IpAddress.String;
	
	

	GetDlgItem(IDC_STATIC_IPADDRESS)->SetWindowText(g_ProgVar.m_szLocalIPAddr);
}

void CHTTPFilterDlg::OnBnClickedButtonStart()
{
	// TODO: Add your control notification handler code here
	if (m_pProcessPkt->StartEngine(g_ProgVar.m_szAdapterName) == 0)
	{		
		m_lstLog.InsertString(m_lstLog.GetCount(), "Engine cannot start on this interface.");
		return;
	}
	
	m_lstLog.SetCurSel(m_lstLog.GetCount());
	m_lstLog.InsertString(m_lstLog.GetCount(), "Engine started.");
	GetDlgItem(IDC_BUTTON1)->EnableWindow(FALSE);
}

void CHTTPFilterDlg::OnBnClickedButtonStop()
{
	// TODO: Add your control notification handler code here
	m_pProcessPkt->StopEngine();
	m_lstLog.InsertString(m_lstLog.GetCount(), "Engine stopped.");
	GetDlgItem(IDC_BUTTON1)->EnableWindow(TRUE);
}


void CHTTPFilterDlg::OnTimer(UINT nIDEvent)
{
	// TODO: Add your message handler code here and/or call default
	if (m_pFiletLog->GetCount() > 0)
		m_lstLog.InsertString(m_lstLog.GetCount(), m_pFiletLog->GetLog());	

	m_lstLog.SetCurSel(m_lstLog.GetCount());
	CDialog::OnTimer(nIDEvent);
}