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/**************************************************************************/
/* */
/* Copyright (c) 2001, 2007 NoMachine, http://www.nomachine.com/. */
/* */
/* NXCOMP, NX protocol compression and NX extensions to this software */
/* are copyright of NoMachine. Redistribution and use of the present */
/* software is allowed according to terms specified in the file LICENSE */
/* which comes in the source distribution. */
/* */
/* Check http://www.nomachine.com/licensing.html for applicability. */
/* */
/* NX and NoMachine are trademarks of NoMachine S.r.l. */
/* */
/* All rights reserved. */
/* */
/**************************************************************************/
#include "SetUnpackAlphaCompat.h"
#include "ClientCache.h"
#include "EncodeBuffer.h"
#include "DecodeBuffer.h"
#include "WriteBuffer.h"
//
// Set the verbosity level.
//
#define PANIC
#define WARNING
#undef TEST
#undef DEBUG
#undef DUMP
//
// Constructors and destructors.
//
SetUnpackAlphaCompatStore::SetUnpackAlphaCompatStore(StaticCompressor *compressor)
: MessageStore(compressor)
{
enableCache = SETUNPACKALPHA_ENABLE_CACHE;
enableData = SETUNPACKALPHA_ENABLE_DATA;
enableSplit = SETUNPACKALPHA_ENABLE_SPLIT;
enableCompress = SETUNPACKALPHA_ENABLE_COMPRESS;
dataLimit = SETUNPACKALPHA_DATA_LIMIT;
dataOffset = SETUNPACKALPHA_DATA_OFFSET;
cacheSlots = SETUNPACKALPHA_CACHE_SLOTS;
cacheThreshold = SETUNPACKALPHA_CACHE_THRESHOLD;
cacheLowerThreshold = SETUNPACKALPHA_CACHE_LOWER_THRESHOLD;
messages_ -> resize(cacheSlots);
for (T_messages::iterator i = messages_ -> begin();
i < messages_ -> end(); i++)
{
*i = NULL;
}
temporary_ = NULL;
}
SetUnpackAlphaCompatStore::~SetUnpackAlphaCompatStore()
{
for (T_messages::iterator i = messages_ -> begin();
i < messages_ -> end(); i++)
{
destroy(*i);
}
destroy(temporary_);
}
//
// Here are the methods to handle messages' content.
//
int SetUnpackAlphaCompatStore::encodeIdentity(EncodeBuffer &encodeBuffer, const unsigned char *buffer,
const unsigned int size, int bigEndian,
ChannelCache *channelCache) const
{
ClientCache *clientCache = (ClientCache *) channelCache;
#ifdef DEBUG
*logofs << name() << ": Encoding full message identity.\n" << logofs_flush;
#endif
// Client.
encodeBuffer.encodeCachedValue(*(buffer + 1), 8,
clientCache -> resourceCache);
// Entries.
encodeBuffer.encodeValue(GetULONG(buffer + 4, bigEndian), 32, 9);
#ifdef DEBUG
*logofs << name() << ": Encoded full message identity.\n" << logofs_flush;
#endif
return 1;
}
int SetUnpackAlphaCompatStore::decodeIdentity(DecodeBuffer &decodeBuffer, unsigned char *&buffer,
unsigned int &size, int bigEndian, WriteBuffer *writeBuffer,
ChannelCache *channelCache) const
{
ClientCache *clientCache = (ClientCache *) channelCache;
#ifdef DEBUG
*logofs << name() << ": Decoding full message identity.\n" << logofs_flush;
#endif
unsigned int value;
unsigned char cValue;
// Client.
decodeBuffer.decodeCachedValue(cValue, 8,
clientCache -> resourceCache);
// Entries.
decodeBuffer.decodeValue(value, 32, 9);
size = RoundUp4(value) + 8;
buffer = writeBuffer -> addMessage(size);
*(buffer + 1) = cValue;
PutULONG(value, buffer + 4, bigEndian);
#ifdef DEBUG
*logofs << name() << ": Decoded full message identity.\n" << logofs_flush;
#endif
return 1;
}
int SetUnpackAlphaCompatStore::parseIdentity(Message *message, const unsigned char *buffer,
unsigned int size, int bigEndian) const
{
SetUnpackAlphaCompatMessage *setUnpackAlpha = (SetUnpackAlphaCompatMessage *) message;
setUnpackAlpha -> client = *(buffer + 1);
setUnpackAlpha -> entries = GetULONG(buffer + 4, bigEndian);
#ifdef DEBUG
*logofs << name() << ": Parsed identity for message at " << message << ".\n" << logofs_flush;
#endif
return 1;
}
int SetUnpackAlphaCompatStore::unparseIdentity(const Message *message, unsigned char *buffer,
unsigned int size, int bigEndian) const
{
SetUnpackAlphaCompatMessage *setUnpackAlpha = (SetUnpackAlphaCompatMessage *) message;
*(buffer + 1) = setUnpackAlpha -> client;
PutULONG(setUnpackAlpha -> entries, buffer + 4, bigEndian);
#ifdef DEBUG
*logofs << name() << ": Unparsed identity for message at " << message << ".\n" << logofs_flush;
#endif
return 1;
}
void SetUnpackAlphaCompatStore::dumpIdentity(const Message *message) const
{
#ifdef DUMP
SetUnpackAlphaCompatMessage *setUnpackAlpha = (SetUnpackAlphaCompatMessage *) message;
*logofs << name() << ": Identity client "
<< (unsigned int) setUnpackAlpha -> client << " entries "
<< setUnpackAlpha -> entries << " size "
<< setUnpackAlpha -> size_ << ".\n";
#endif
}
void SetUnpackAlphaCompatStore::identityChecksum(const Message *message, const unsigned char *buffer,
unsigned int size, int bigEndian) const
{
md5_append(md5_state_, buffer + 4, 4);
}
void SetUnpackAlphaCompatStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
const Message *cachedMessage,
ChannelCache *channelCache) const
{
SetUnpackAlphaCompatMessage *setUnpackAlpha = (SetUnpackAlphaCompatMessage *) message;
SetUnpackAlphaCompatMessage *cachedSetUnpackAlpha = (SetUnpackAlphaCompatMessage *) cachedMessage;
ClientCache *clientCache = (ClientCache *) channelCache;
encodeBuffer.encodeCachedValue(setUnpackAlpha -> client, 8,
clientCache -> resourceCache);
cachedSetUnpackAlpha -> client = setUnpackAlpha -> client;
if (cachedSetUnpackAlpha -> entries != setUnpackAlpha -> entries)
{
#ifdef TEST
*logofs << name() << ": Encoding value " << setUnpackAlpha -> entries
<< " as entries field.\n" << logofs_flush;
#endif
encodeBuffer.encodeBoolValue(1);
encodeBuffer.encodeValue(setUnpackAlpha -> entries, 32, 9);
cachedSetUnpackAlpha -> entries = setUnpackAlpha -> entries;
}
else
{
encodeBuffer.encodeBoolValue(0);
}
}
void SetUnpackAlphaCompatStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
ChannelCache *channelCache) const
{
SetUnpackAlphaCompatMessage *setUnpackAlpha = (SetUnpackAlphaCompatMessage *) message;
ClientCache *clientCache = (ClientCache *) channelCache;
unsigned int value;
decodeBuffer.decodeCachedValue(setUnpackAlpha -> client, 8,
clientCache -> resourceCache);
decodeBuffer.decodeBoolValue(value);
if (value)
{
decodeBuffer.decodeValue(value, 32, 9);
setUnpackAlpha -> entries = value;
#ifdef DEBUG
*logofs << name() << ": Decoded value " << setUnpackAlpha -> entries
<< " as entries field.\n" << logofs_flush;
#endif
}
}
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