Simple, Robust and Expandable Winsock Server for Multiple Clients with Easy to Add New Services

/*
CvmClntDlg : implementation file

Author Vadim Motorine  
email vad@friendly-ware.com
Copyright (C) 2006 Vadim Motorine 
*/



//

#include "stdafx.h"
#include "vmClnt.h"
#include "vmClntDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// 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()


// CvmClntDlg dialog




CvmClntDlg::CvmClntDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CvmClntDlg::IDD, pParent)
	, SrvrIP(_T(""))
	, srvrPort(0)
	, fldrPth(_T(""))
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	
//Stores this dialog  pointer in the main working class CvmClntHlpr	
	StWnPrntPtr(this);
}

void CvmClntDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Text(pDX, IDC_SRVRIP_ED, SrvrIP);
	DDX_Text(pDX, IDC_SRVR_PRT, srvrPort);
	DDX_Text(pDX, IDC_EDIT4, fldrPth);
}

BEGIN_MESSAGE_MAP(CvmClntDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BTN_SRVRTM, &CvmClntDlg::OnBnClickedBtnSrvrtm)
	ON_BN_CLICKED(IDC_GTFLSANDSZS, &CvmClntDlg::OnBnClickedGtflsandszs)
	ON_BN_CLICKED(IDC_DSCNNCT_BTN, &CvmClntDlg::OnBnClickedDscnnctBtn)
	ON_BN_CLICKED(IDCANCEL, &CvmClntDlg::OnBnClickedCancel)
END_MESSAGE_MAP()


// CvmClntDlg message handlers

BOOL CvmClntDlg::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
	
	srvrPort = GetDfltPrt();// to show the default port
	UpdateData(false);
	
//Getting the status window handle	
	CEdit* psstsP = reinterpret_cast<CEdit*>(GetDlgItem(IDC_STATUS_ED));	
	
//Stores the status window handle to use in the application	as well as
//this dialog wondow handle
	SetHWND(psstsP->m_hWnd, this->m_hWnd);//to send the status messages from the thread
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CvmClntDlg::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 CvmClntDlg::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 CvmClntDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}

//Preiminary check of the user input
bool CvmClntDlg::Check()
{
	UpdateData(true);
	SrvrIP.Trim();//IDC_SRVR_PRT
	if(SrvrIP.IsEmpty()){
		AfxMessageBox("Please, enter the server name or IP address");
		UpdateData(false);
		return false;		
	}
	CEdit* prtIdEP = reinterpret_cast<CEdit*>(GetDlgItem(IDC_SRVR_PRT));
	CString prtStr;
	prtIdEP->GetWindowText(prtStr);
	prtStr.Trim();
	if(prtStr.IsEmpty()){
		AfxMessageBox("Please, enter the port");
		UpdateData(false);
		return false;			
	}
	return true;
}

//Asks the server time
void CvmClntDlg::OnBnClickedBtnSrvrtm()
{
	if(!Check())
		return;
	DoCmmnd(CVMprotocolCr::TIME, SrvrIP.GetString(), srvrPort, " ");
}

//Asks the server for the list 
//of all the subdirectories of the given
//server directory together with all files
//and their sizes
void CvmClntDlg::OnBnClickedGtflsandszs()
{
	if(!Check())
		return;
	fldrPth.Trim();
	if(fldrPth.IsEmpty()){
		AfxMessageBox("Please enter the file name or the folder path");
		return;
	}	
	DoCmmnd(CVMprotocolCr::FILE_SZS, SrvrIP.GetString(), srvrPort, fldrPth.GetString());
}

//Diconnects
void CvmClntDlg::OnBnClickedDscnnctBtn()
{
	DoCmmnd(CVMprotocolCr::BY_BY, SrvrIP.GetString(), srvrPort, " ");
}

// On cancel  or "Esc"
void CvmClntDlg::OnBnClickedCancel()
{
	
	OnCancel();
}

void CvmClntDlg::OnCancel()
{
//First we disconnect
	DoCmmnd(CVMprotocolCr::BY_BY, SrvrIP.GetString(), srvrPort, " ");

	CDialog::OnCancel();
}