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/**************************************************************************/
/* */
/* Copyright (c) 2001, 2009 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 Medialogic S.p.A. */
/* */
/* All rights reserved. */
/* */
/**************************************************************************/
#include "ImageText8.h"
#include "ClientCache.h"
#include "EncodeBuffer.h"
#include "DecodeBuffer.h"
//
// Set the verbosity level.
//
#define PANIC
#define WARNING
#undef TEST
#undef DEBUG
#undef DUMP
//
// Here are the methods to handle messages' content.
//
int ImageText8Store::parseIdentity(Message *message, const unsigned char *buffer,
unsigned int size, int bigEndian) const
{
ImageText8Message *imageText8 = (ImageText8Message *) message;
//
// Here is the fingerprint.
//
imageText8 -> len = *(buffer + 1);
imageText8 -> drawable = GetULONG(buffer + 4, bigEndian);
imageText8 -> gcontext = GetULONG(buffer + 8, bigEndian);
imageText8 -> x = GetUINT(buffer + 12, bigEndian);
imageText8 -> y = GetUINT(buffer + 14, bigEndian);
if ((int) size > dataOffset)
{
int pad = (size - dataOffset) - imageText8 -> len;
if (pad > 0)
{
CleanData((unsigned char *) buffer + size - pad, pad);
}
}
#ifdef DEBUG
*logofs << name() << ": Parsed Identity for message at " << this << ".\n" << logofs_flush;
#endif
return 1;
}
int ImageText8Store::unparseIdentity(const Message *message, unsigned char *buffer,
unsigned int size, int bigEndian) const
{
ImageText8Message *imageText8 = (ImageText8Message *) message;
//
// Fill all the message's fields.
//
*(buffer + 1) = imageText8 -> len;
PutULONG(imageText8 -> drawable, buffer + 4, bigEndian);
PutULONG(imageText8 -> gcontext, buffer + 8, bigEndian);
PutUINT(imageText8 -> x, buffer + 12, bigEndian);
PutUINT(imageText8 -> y, buffer + 14, bigEndian);
#ifdef DEBUG
*logofs << name() << ": Unparsed identity for message at " << this << ".\n" << logofs_flush;
#endif
return 1;
}
void ImageText8Store::dumpIdentity(const Message *message) const
{
#ifdef DUMP
ImageText8Message *imageText8 = (ImageText8Message *) message;
*logofs << name() << ": Identity len " << (unsigned int) imageText8 -> len
<< " drawable " << imageText8 -> drawable << ", gcontext "
<< imageText8 -> gcontext << ", x " << imageText8 -> x << ", y "
<< imageText8 -> y << ", size " << imageText8 -> size_ << ".\n";
#endif
}
void ImageText8Store::identityChecksum(const Message *message, const unsigned char *buffer,
unsigned int size, int bigEndian) const
{
md5_append(md5_state_, buffer + 1, 1);
}
void ImageText8Store::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
const Message *cachedMessage,
ChannelCache *channelCache) const
{
ImageText8Message *imageText8 = (ImageText8Message *) message;
ImageText8Message *cachedImageText8 = (ImageText8Message *) cachedMessage;
ClientCache *clientCache = (ClientCache *) channelCache;
#ifdef TEST
*logofs << name() << ": Encoding value " << imageText8 -> drawable
<< " as " << "drawable" << " field.\n" << logofs_flush;
#endif
encodeBuffer.encodeXidValue(imageText8 -> drawable, clientCache -> drawableCache);
cachedImageText8 -> drawable = imageText8 -> drawable;
#ifdef TEST
*logofs << name() << ": Encoding value " << imageText8 -> gcontext
<< " as " << "gcontext" << " field.\n" << logofs_flush;
#endif
encodeBuffer.encodeXidValue(imageText8 -> gcontext, clientCache -> gcCache);
cachedImageText8 -> gcontext = imageText8 -> gcontext;
#ifdef TEST
*logofs << name() << ": Encoding value " << imageText8 -> x
<< " as " << "x" << " field.\n" << logofs_flush;
#endif
unsigned short int diff_x = imageText8 -> x - cachedImageText8 -> x;
encodeBuffer.encodeCachedValue(diff_x, 16,
clientCache -> imageTextCacheX);
cachedImageText8 -> x = imageText8 -> x;
#ifdef TEST
*logofs << name() << ": Encoding value " << imageText8 -> y
<< " as " << "y" << " field.\n" << logofs_flush;
#endif
unsigned short int diff_y = imageText8 -> y - cachedImageText8 -> y;
encodeBuffer.encodeCachedValue(diff_y, 16,
clientCache -> imageTextCacheY);
cachedImageText8 -> y = imageText8 -> y;
}
void ImageText8Store::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
ChannelCache *channelCache) const
{
ImageText8Message *imageText8 = (ImageText8Message *) message;
ClientCache *clientCache = (ClientCache *) channelCache;
unsigned int value;
decodeBuffer.decodeXidValue(value, clientCache -> drawableCache);
imageText8 -> drawable = value;
#ifdef DEBUG
*logofs << name() << ": Decoded value " << imageText8 -> drawable
<< " as " << "drawable" << " field.\n" << logofs_flush;
#endif
decodeBuffer.decodeXidValue(value, clientCache -> gcCache);
imageText8 -> gcontext = value;
#ifdef DEBUG
*logofs << name() << ": Decoded value " << imageText8 -> gcontext
<< " as gcontext field.\n" << logofs_flush;
#endif
decodeBuffer.decodeCachedValue(value, 16,
clientCache -> imageTextCacheX);
imageText8 -> x += value;
imageText8 -> x &= 0xffff;
#ifdef DEBUG
*logofs << name() << ": Decoded value " << imageText8 -> x
<< " as x field.\n" << logofs_flush;
#endif
decodeBuffer.decodeCachedValue(value, 16,
clientCache -> imageTextCacheY);
imageText8 -> y += value;
imageText8 -> y &= 0xffff;
#ifdef DEBUG
*logofs << name() << ": Decoded value " << imageText8 -> y
<< " as y field.\n" << logofs_flush;
#endif
}
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