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Diffstat (limited to 'nxcomp/ImageText8.cpp')
| -rw-r--r-- | nxcomp/ImageText8.cpp | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/nxcomp/ImageText8.cpp b/nxcomp/ImageText8.cpp new file mode 100644 index 000000000..161977677 --- /dev/null +++ b/nxcomp/ImageText8.cpp @@ -0,0 +1,219 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) 2001, 2010 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 +} + + |