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71 lines
2.8 KiB
C
71 lines
2.8 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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// SSecurity - class on the server 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 client. It
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// should return false when it needs more data, or true when the connection has
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// been successfully authenticated. In the event of authentication failure an
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// AuthFailureException should be thrown - this will result in a "failed"
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// security result being sent to the client with the str() from the exception
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// being sent as the reason. Any other type of failure should be indicated by
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// some other kind of exception which will cause the connection to be aborted.
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//
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// processMsg() must never block (or at least must never block until the client
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// has been authenticated) - this is to prevent denial of service attacks.
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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 SConnection'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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// getType() should return the secType value corresponding to the SSecurity
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// implementation.
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//
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#ifndef __RFB_SSECURITY_H__
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#define __RFB_SSECURITY_H__
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#include <rdr/types.h>
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#include <rfb/SConnection.h>
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#include <rfb/util.h>
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#include <list>
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namespace rfb {
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class SSecurity {
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public:
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virtual ~SSecurity() {}
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virtual bool processMsg(SConnection* sc)=0;
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virtual void destroy() { delete this; }
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virtual int getType() const = 0;
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// getUserName() gets the name of the user attempting authentication. The
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// storage is owned by the SSecurity object, so a copy must be taken if
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// necessary. Null may be returned to indicate that there is no user name
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// for this security type.
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virtual const char* getUserName() const = 0;
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virtual SConnection::AccessRights getAccessRights() const { return SConnection::AccessDefault; }
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};
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}
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#endif
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