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-rwxr-xr-xnxcomp/PutImage.cpp405
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diff --git a/nxcomp/PutImage.cpp b/nxcomp/PutImage.cpp
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+++ b/nxcomp/PutImage.cpp
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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 "PutImage.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.
+//
+
+PutImageStore::PutImageStore(StaticCompressor *compressor)
+
+ : MessageStore(compressor)
+{
+ enableCache = PUTIMAGE_ENABLE_CACHE;
+ enableData = PUTIMAGE_ENABLE_DATA;
+ enableSplit = PUTIMAGE_ENABLE_SPLIT;
+ enableCompress = PUTIMAGE_ENABLE_COMPRESS;
+
+ if (control -> isProtoStep7() == 1)
+ {
+ enableCompress = PUTIMAGE_ENABLE_COMPRESS_IF_PROTO_STEP_7;
+ }
+
+ dataLimit = PUTIMAGE_DATA_LIMIT;
+ dataOffset = PUTIMAGE_DATA_OFFSET;
+
+ cacheSlots = PUTIMAGE_CACHE_SLOTS;
+ cacheThreshold = PUTIMAGE_CACHE_THRESHOLD;
+ cacheLowerThreshold = PUTIMAGE_CACHE_LOWER_THRESHOLD;
+
+ if (control -> isProtoStep8() == 1)
+ {
+ enableSplit = PUTIMAGE_ENABLE_SPLIT_IF_PROTO_STEP_8;
+ }
+
+ messages_ -> resize(cacheSlots);
+
+ for (T_messages::iterator i = messages_ -> begin();
+ i < messages_ -> end(); i++)
+ {
+ *i = NULL;
+ }
+
+ temporary_ = NULL;
+}
+
+PutImageStore::~PutImageStore()
+{
+ for (T_messages::iterator i = messages_ -> begin();
+ i < messages_ -> end(); i++)
+ {
+ destroy(*i);
+ }
+
+ destroy(temporary_);
+}
+
+//
+// Here are the methods to handle messages' content.
+//
+
+int PutImageStore::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
+
+ encodeBuffer.encodeValue(GetUINT(buffer + 2, bigEndian), 16, 8);
+
+ encodeBuffer.encodeValue((unsigned int) buffer[1], 2);
+
+ encodeBuffer.encodeXidValue(GetULONG(buffer + 4, bigEndian),
+ clientCache -> drawableCache);
+ encodeBuffer.encodeXidValue(GetULONG(buffer + 8, bigEndian),
+ clientCache -> gcCache);
+
+ unsigned int width = GetUINT(buffer + 12, bigEndian);
+ encodeBuffer.encodeCachedValue(width, 16,
+ clientCache -> putImageWidthCache, 8);
+
+ unsigned int height = GetUINT(buffer + 14, bigEndian);
+ encodeBuffer.encodeCachedValue(height, 16,
+ clientCache -> putImageHeightCache, 8);
+
+ unsigned int x = GetUINT(buffer + 16, bigEndian);
+ int xDiff = x - clientCache -> putImageLastX;
+ clientCache -> putImageLastX = x;
+ encodeBuffer.encodeCachedValue(xDiff, 16,
+ clientCache -> putImageXCache, 8);
+
+ unsigned int y = GetUINT(buffer + 18, bigEndian);
+ int yDiff = y - clientCache -> putImageLastY;
+ clientCache -> putImageLastY = y;
+ encodeBuffer.encodeCachedValue(yDiff, 16,
+ clientCache -> putImageYCache, 8);
+
+ encodeBuffer.encodeCachedValue(buffer[20], 8,
+ clientCache -> putImageLeftPadCache);
+
+ encodeBuffer.encodeCachedValue(buffer[21], 8,
+ clientCache -> depthCache);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Encoded full message identity.\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+int PutImageStore::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;
+
+ decodeBuffer.decodeValue(value, 16, 8);
+
+ size = (value << 2);
+
+ buffer = writeBuffer -> addMessage(size);
+
+ decodeBuffer.decodeValue(value, 2);
+ buffer[1] = (unsigned char) value;
+
+ decodeBuffer.decodeXidValue(value, clientCache -> drawableCache);
+ PutULONG(value, buffer + 4, bigEndian);
+
+ decodeBuffer.decodeXidValue(value, clientCache -> gcCache);
+ PutULONG(value, buffer + 8, bigEndian);
+
+ unsigned int width;
+ decodeBuffer.decodeCachedValue(width, 16,
+ clientCache -> putImageWidthCache, 8);
+ PutUINT(width, buffer + 12, bigEndian);
+
+ unsigned int height;
+ decodeBuffer.decodeCachedValue(height, 16,
+ clientCache -> putImageHeightCache, 8);
+ PutUINT(height, buffer + 14, bigEndian);
+
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageXCache, 8);
+ clientCache -> putImageLastX += value;
+ clientCache -> putImageLastX &= 0xffff;
+ PutUINT(clientCache -> putImageLastX, buffer + 16, bigEndian);
+
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageYCache, 8);
+ clientCache -> putImageLastY += value;
+ clientCache -> putImageLastY &= 0xffff;
+ PutUINT(clientCache -> putImageLastY, buffer + 18, bigEndian);
+
+ decodeBuffer.decodeCachedValue(cValue, 8,
+ clientCache -> putImageLeftPadCache);
+ buffer[20] = cValue;
+
+ decodeBuffer.decodeCachedValue(cValue, 8,
+ clientCache -> depthCache);
+ buffer[21] = cValue;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded full message identity.\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+int PutImageStore::parseIdentity(Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ PutImageMessage *putImage = (PutImageMessage *) message;
+
+ //
+ // Here is the fingerprint.
+ //
+
+ putImage -> format = *(buffer + 1);
+ putImage -> depth = *(buffer + 21);
+ putImage -> left_pad = *(buffer + 20);
+
+ putImage -> width = GetUINT(buffer + 12, bigEndian);
+ putImage -> height = GetUINT(buffer + 14, bigEndian);
+ putImage -> pos_x = GetUINT(buffer + 16, bigEndian);
+ putImage -> pos_y = GetUINT(buffer + 18, bigEndian);
+
+ putImage -> drawable = GetULONG(buffer + 4, bigEndian);
+ putImage -> gcontext = GetULONG(buffer + 8, bigEndian);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Parsed identity for message at " << message << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+int PutImageStore::unparseIdentity(const Message *message, unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ PutImageMessage *putImage = (PutImageMessage *) message;
+
+ //
+ // Fill all the message's fields.
+ //
+
+ *(buffer + 1) = putImage -> format;
+
+ PutULONG(putImage -> drawable, buffer + 4, bigEndian);
+ PutULONG(putImage -> gcontext, buffer + 8, bigEndian);
+
+ PutUINT(putImage -> width, buffer + 12, bigEndian);
+ PutUINT(putImage -> height, buffer + 14, bigEndian);
+ PutUINT(putImage -> pos_x, buffer + 16, bigEndian);
+ PutUINT(putImage -> pos_y, buffer + 18, bigEndian);
+
+ *(buffer + 20) = (unsigned char) putImage -> left_pad;
+ *(buffer + 21) = (unsigned char) putImage -> depth;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Unparsed identity for message at "
+ << message << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+void PutImageStore::dumpIdentity(const Message *message) const
+{
+ #ifdef DUMP
+
+ PutImageMessage *putImage = (PutImageMessage *) message;
+
+ *logofs << name() << ": Identity format " << (unsigned) putImage -> format
+ << ", depth " << (unsigned) putImage -> depth << ", left_pad "
+ << (unsigned) putImage -> left_pad << ", width " << putImage -> width
+ << ", height " << putImage -> height << ", pos_x " << putImage -> pos_x
+ << ", pos_y " << putImage -> pos_y << ", drawable " << putImage -> drawable
+ << ", gcontext " << putImage -> gcontext << ", size " << putImage -> size_
+ << ".\n" << logofs_flush;
+
+ #endif
+}
+
+void PutImageStore::identityChecksum(const Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ //
+ // Fields format, width, height, left_pad, depth.
+ //
+
+ md5_append(md5_state_, buffer + 1, 1);
+ md5_append(md5_state_, buffer + 12, 4);
+ md5_append(md5_state_, buffer + 20, 2);
+}
+
+void PutImageStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
+ const Message *cachedMessage,
+ ChannelCache *channelCache) const
+{
+ //
+ // Encode the variant part.
+ //
+
+ PutImageMessage *putImage = (PutImageMessage *) message;
+ PutImageMessage *cachedPutImage = (PutImageMessage *) cachedMessage;
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << putImage -> drawable
+ << " as drawable field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeXidValue(putImage -> drawable, clientCache -> drawableCache);
+
+ cachedPutImage -> drawable = putImage -> drawable;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << putImage -> gcontext
+ << " as gcontext field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeXidValue(putImage -> gcontext, clientCache -> gcCache);
+
+ cachedPutImage -> gcontext = putImage -> gcontext;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << putImage -> pos_x
+ << " as " << "pos_x" << " field.\n" << logofs_flush;
+ #endif
+
+ unsigned short int diff_x = putImage -> pos_x - cachedPutImage -> pos_x;
+
+ encodeBuffer.encodeCachedValue(diff_x, 16,
+ clientCache -> putImageXCache, 8);
+
+ cachedPutImage -> pos_x = putImage -> pos_x;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << putImage -> pos_y
+ << " as " << "pos_y" << " field.\n" << logofs_flush;
+ #endif
+
+ unsigned short int diff_y = putImage -> pos_y - cachedPutImage -> pos_y;
+
+ encodeBuffer.encodeCachedValue(diff_y, 16,
+ clientCache -> putImageYCache, 8);
+
+ cachedPutImage -> pos_y = putImage -> pos_y;
+}
+
+void PutImageStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
+ ChannelCache *channelCache) const
+{
+ //
+ // Decode the variant part.
+ //
+
+ PutImageMessage *putImage = (PutImageMessage *) message;
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ unsigned int value;
+
+ decodeBuffer.decodeXidValue(value, clientCache -> drawableCache);
+
+ putImage -> drawable = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << putImage -> drawable
+ << " as drawable field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeXidValue(value, clientCache -> gcCache);
+
+ putImage -> gcontext = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << putImage -> gcontext
+ << " as gcontext field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageXCache, 8);
+
+ putImage -> pos_x += value;
+ putImage -> pos_x &= 0xffff;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << putImage -> pos_x
+ << " as pos_x field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> putImageYCache, 8);
+
+ putImage -> pos_y += value;
+ putImage -> pos_y &= 0xffff;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << putImage -> pos_y
+ << " as pos_y field.\n" << logofs_flush;
+ #endif
+}
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