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Diffstat (limited to 'nxcomp/src/ShapeExtension.h')
| -rw-r--r-- | nxcomp/src/ShapeExtension.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/nxcomp/src/ShapeExtension.h b/nxcomp/src/ShapeExtension.h new file mode 100644 index 000000000..4dd636847 --- /dev/null +++ b/nxcomp/src/ShapeExtension.h @@ -0,0 +1,164 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */ +/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */ +/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */ +/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */ +/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/ +/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */ +/* */ +/* NXCOMP, NX protocol compression and NX extensions to this software */ +/* are copyright of the aforementioned persons and companies. */ +/* */ +/* Redistribution and use of the present software is allowed according */ +/* to terms specified in the file LICENSE.nxcomp which comes in the */ +/* source distribution. */ +/* */ +/* All rights reserved. */ +/* */ +/* NOTE: This software has received contributions from various other */ +/* contributors, only the core maintainers and supporters are listed as */ +/* copyright holders. Please contact us, if you feel you should be listed */ +/* as copyright holder, as well. */ +/* */ +/**************************************************************************/ + +#ifndef ShapeExtension_H +#define ShapeExtension_H + +#include "Message.h" + +// +// Set the verbosity level. +// + +#define PANIC +#define WARNING +#undef TEST +#undef DEBUG +#undef DUMP + +// +// Set default values. +// + +#define SHAPEEXTENSION_ENABLE_CACHE 1 +#define SHAPEEXTENSION_ENABLE_DATA 1 +#define SHAPEEXTENSION_ENABLE_SPLIT 0 + +#define SHAPEEXTENSION_DATA_LIMIT 3200 +#define SHAPEEXTENSION_DATA_OFFSET 20 + +#define SHAPEEXTENSION_CACHE_SLOTS 3000 +#define SHAPEEXTENSION_CACHE_THRESHOLD 10 +#define SHAPEEXTENSION_CACHE_LOWER_THRESHOLD 5 + +#define SHAPEEXTENSION_ENABLE_COMPRESS_IF_PROTO_STEP_7 0 + +// +// The message class. +// + +class ShapeExtensionMessage : public Message +{ + friend class ShapeExtensionStore; + + public: + + ShapeExtensionMessage() + { + } + + ~ShapeExtensionMessage() + { + } + + // + // Note for encoding in protocol level 1: we consider + // for this message a data offset of 4. Bytes from 5 + // to 20, if present, are taken as part of identity + // and encoded through an array of int caches. + // + + private: + + unsigned char opcode; + unsigned short data[8]; +}; + +class ShapeExtensionStore : public MessageStore +{ + public: + + ShapeExtensionStore(StaticCompressor *compressor); + + virtual ~ShapeExtensionStore(); + + virtual const char *name() const + { + return "ShapeExtension"; + } + + virtual unsigned char opcode() const + { + return opcode_; + } + + virtual unsigned int storage() const + { + return sizeof(ShapeExtensionMessage); + } + + // + // Message handling methods. + // + + public: + + virtual Message *create() const + { + return new ShapeExtensionMessage(); + } + + virtual Message *create(const Message &message) const + { + return new ShapeExtensionMessage((const ShapeExtensionMessage &) message); + } + + virtual void destroy(Message *message) const + { + delete (ShapeExtensionMessage *) message; + } + + virtual int encodeIdentity(EncodeBuffer &encodeBuffer, const unsigned char *buffer, + const unsigned int size, int bigEndian, + ChannelCache *channelCache) const; + + virtual int decodeIdentity(DecodeBuffer &decodeBuffer, unsigned char *&buffer, + unsigned int &size, int bigEndian, WriteBuffer *writeBuffer, + ChannelCache *channelCache) const; + + virtual int parseIdentity(Message *message, const unsigned char *buffer, + unsigned int size, int bigEndian) const; + + virtual int unparseIdentity(const Message *message, unsigned char *buffer, + unsigned int size, int bigEndian) const; + + virtual void updateIdentity(EncodeBuffer &encodeBuffer, const Message *message, + const Message *cachedMessage, + ChannelCache *channelCache) const; + + virtual void updateIdentity(DecodeBuffer &decodeBuffer, const Message *message, + ChannelCache *channelCache) const; + + virtual void identityChecksum(const Message *message, const unsigned char *buffer, + unsigned int size, int bigEndian) const; + + virtual void dumpIdentity(const Message *message) const; + + private: + + unsigned char opcode_; +}; + +#endif /* ShapeExtension_H */ |