100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
/* -*- C++ -*- */
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/*
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* Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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//
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//
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// Option
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//
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//
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#ifndef __OPTION_H__
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#define __OPTION_H__
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// Define some ansi C++ keywords.
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#define ANSI_BOOLEAN
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#define Boolean bool
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#define bool BOOL
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#define true TRUE
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#define false FALSE
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#include "CharStream.h"
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#include "TelnetCodes.h"
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class TelnetEngine;
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//
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//
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// Option
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//
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// Base class for options
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//
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class Option {
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public:
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// Constructors and destructors
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Option(void);
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~Option ();
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Option (CharStream* str, TelnetEngine *engine, unsigned char option);
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// NegotiateOption, override in subclasses.
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virtual void NegotiateOption (unsigned char command) = 0;
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// ExecOption, override in subclasses if needed.
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virtual void ExecOption(unsigned int Command, void* Data = NULL) {}
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// OptionFor, returns true if object negotiates opt
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// Overridden in DenyAllOption only (where it returns true for all opt:s)
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// virtual short OptionFor (unsigned char opt);
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virtual BOOL InEffect(void) = 0;
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unsigned char option;
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protected:
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void SendReply (void* buff, short len);
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void SendWILL ();
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short ReadToIACSE ();
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void PadBinaryBuff (unsigned char *in, unsigned long *inLen,
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unsigned char *out, unsigned long *outLen);
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// Variables
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CharStream *stream;
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TelnetEngine *pTEngine;
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// State variables as in RFC 1143
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short us, usq;
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short him, himq;
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};
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#endif /* __OPTION_H__ */
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