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259f1055cb
Provides safety against them accidentally becoming negative because of bugs in the calculations. Also does the same to CharArray and friends as they were strongly connection to the stream objects.
64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
/* 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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#ifndef __RDR_RANDOMSTREAM_H__
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#define __RDR_RANDOMSTREAM_H__
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#include <stdio.h>
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#include <rdr/InStream.h>
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#ifdef WIN32
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#include <windows.h>
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#include <wincrypt.h>
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#ifdef WINCRYPT32API
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#define RFB_HAVE_WINCRYPT
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#endif
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#endif
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namespace rdr {
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class RandomStream : public InStream {
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public:
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RandomStream();
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virtual ~RandomStream();
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size_t pos();
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protected:
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size_t overrun(size_t itemSize, size_t nItems, bool wait);
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private:
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U8* start;
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size_t offset;
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static unsigned int seed;
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#ifdef RFB_HAVE_WINCRYPT
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HCRYPTPROV provider;
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#endif
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#ifndef WIN32
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FILE* fp;
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#endif
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};
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} // end of namespace rdr
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#endif
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