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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
*
* This 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 software 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 software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
//
// CSecurity - class on the client side for handling security handshaking. A
// derived class for a particular security type overrides the processMsg()
// method.
// processMsg() is called first when the security type has been decided on, and
// will keep being called whenever there is data to read from the server. It
// should return false when it needs more data, or true when the security
// handshaking is over and we are now waiting for the SecurityResult message
// from the server. In the event of failure a suitable exception should be
// thrown.
//
// Note that the first time processMsg() is called, there is no guarantee that
// there is any data to read from the CConnection's InStream, but subsequent
// calls guarantee there is at least one byte which can be read without
// blocking.
//
// description is a string describing the level of encryption applied to the
// session, or null if no encryption will be used.
#ifndef __RFB_CSECURITY_H__
#define __RFB_CSECURITY_H__
#include <rfb/UserPasswdGetter.h>
#include <rfb/UserMsgBox.h>
namespace rfb {
class CConnection;
class CSecurity {
public:
CSecurity(CConnection* cc_) : cc(cc_) {}
virtual ~CSecurity() {}
virtual bool processMsg() = 0;
virtual int getType() const = 0;
virtual bool isSecure() const { return false; }
/*
* Use variable directly instead of dumb get/set methods.
* It MUST be set by viewer.
*/
static UserPasswdGetter *upg;
static UserMsgBox *msg;
protected:
CConnection* cc;
};
}
#endif
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