vncconndialog.cpp

tightvnc源码

//  Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
//
//  This file is part of the VNC system.
//
//  The VNC system is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
//  USA.
//
// TightVNC distribution homepage on the Web: http://www.tightvnc.com/
//
// If the source code for the VNC system is not available from the place 
// whence you received this file, check http://www.uk.research.att.com/vnc or contact
// the authors on [e-mail] for information on obtaining it.


// vncConnDialog.cpp: implementation of the vncConnDialog class, used
// to forge outgoing connections to VNC-viewer 

#include "stdhdrs.h"
#include "vncConnDialog.h"
#include "WinVNC.h"

#include "resource.h"

extern "C" {
#include "ParseHost.h"
}

// Constructor

vncConnDialog::vncConnDialog(vncServer *server)
{
	m_server = server;
}

// Destructor

vncConnDialog::~vncConnDialog()
{
}

// Routine called to activate the dialog and, once it's done, delete it

void vncConnDialog::DoDialog()
{
	DialogBoxParam(hAppInstance, MAKEINTRESOURCE(IDD_OUTGOING_CONN), 
		NULL, (DLGPROC) vncConnDlgProc, (LONG) this);
	delete this;
}

// Callback function - handles messages sent to the dialog box

BOOL CALLBACK vncConnDialog::vncConnDlgProc(HWND hwnd,
											UINT uMsg,
											WPARAM wParam,
											LPARAM lParam) {
	// This is a static method, so we don't know which instantiation we're 
	// dealing with. But we can get a pseudo-this from the parameter to 
	// WM_INITDIALOG, which we therafter store with the window and retrieve
	// as follows:
	vncConnDialog *_this = (vncConnDialog *) GetWindowLong(hwnd, GWL_USERDATA);

	switch (uMsg) {

		// Dialog has just been created
	case WM_INITDIALOG:
		{
			// Save the lParam into our user data so that subsequent calls have
			// access to the parent C++ object

            SetWindowLong(hwnd, GWL_USERDATA, lParam);
            vncConnDialog *_this = (vncConnDialog *) lParam;
            
            // Return success!
			return TRUE;
		}

		// Dialog has just received a command
	case WM_COMMAND:
		switch (LOWORD(wParam)) {

			// User clicked OK or pressed return
		case IDOK:
			char hostname[_MAX_PATH];
			int port;

			// Get the hostname of the VNCviewer
			GetDlgItemText(hwnd, IDC_HOSTNAME_EDIT, hostname, _MAX_PATH);

			// Calculate the Display and Port offset.
			port = ParseHostPort(hostname, INCOMING_PORT_OFFSET);

			// Attempt to create a new socket
			VSocket *tmpsock;
			tmpsock = new VSocket;
			if (!tmpsock)
				return TRUE;

			// Connect out to the specified host on the VNCviewer listen port.
			tmpsock->Create();
			if (tmpsock->Connect(hostname, port)) {
				// Add the new client to this server
				_this->m_server->AddClient(tmpsock, TRUE, TRUE);

				// And close the dialog
                EndDialog(hwnd, TRUE);
			} else {
				// Print up an error message
				MessageBox(NULL, 
                    "Failed to connect to listening VNC viewer",
                    "Outgoing Connection",
					MB_OK | MB_ICONEXCLAMATION );
				delete tmpsock;
			}
			return TRUE;

			// Cancel the dialog
		case IDCANCEL:
			EndDialog(hwnd, FALSE);
			return TRUE;
		};

		break;

	case WM_DESTROY:
		EndDialog(hwnd, FALSE);
		return TRUE;
	}
	return 0;
}