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62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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//
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// CSecurity - class on the client side for handling security handshaking. A
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// derived class for a particular security type overrides the processMsg()
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// method.
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// processMsg() is called first when the security type has been decided on, and
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// will keep being called whenever there is data to read from the server. It
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// should return false when it needs more data, or true when the security
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// handshaking is over and we are now waiting for the SecurityResult message
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// from the server. In the event of failure a suitable exception should be
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// thrown.
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//
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// Note that the first time processMsg() is called, there is no guarantee that
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// there is any data to read from the CConnection's InStream, but subsequent
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// calls guarantee there is at least one byte which can be read without
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// blocking.
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//
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// description is a string describing the level of encryption applied to the
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// session, or null if no encryption will be used.
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#ifndef __RFB_CSECURITY_H__
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#define __RFB_CSECURITY_H__
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#include <rfb/UserPasswdGetter.h>
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namespace rfb {
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class CConnection;
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class CSecurity {
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public:
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virtual ~CSecurity() {}
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virtual bool processMsg(CConnection* cc)=0;
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virtual void destroy() { delete this; }
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virtual int getType() const = 0;
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virtual const char* description() const = 0;
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virtual bool isSecure() const { return false; }
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/*
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* Use variable directly instead of dumb get/set methods.
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* It MUST be set by viewer.
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*/
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static UserPasswdGetter *upg;
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};
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}
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#endif
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