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-rwxr-xr-xnxcomp/ImageText16.cpp219
1 files changed, 219 insertions, 0 deletions
diff --git a/nxcomp/ImageText16.cpp b/nxcomp/ImageText16.cpp
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+++ b/nxcomp/ImageText16.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 "ImageText16.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 ImageText16Store::parseIdentity(Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ ImageText16Message *imageText16 = (ImageText16Message *) message;
+
+ //
+ // Here is the fingerprint.
+ //
+
+ imageText16 -> len = *(buffer + 1);
+
+ imageText16 -> drawable = GetULONG(buffer + 4, bigEndian);
+ imageText16 -> gcontext = GetULONG(buffer + 8, bigEndian);
+
+ imageText16 -> x = GetUINT(buffer + 12, bigEndian);
+ imageText16 -> y = GetUINT(buffer + 14, bigEndian);
+
+ if ((int) size > dataOffset)
+ {
+ int pad = (size - dataOffset) - (imageText16 -> len * 2);
+
+ 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 ImageText16Store::unparseIdentity(const Message *message, unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ ImageText16Message *imageText16 = (ImageText16Message *) message;
+
+ //
+ // Fill all the message's fields.
+ //
+
+ *(buffer + 1) = imageText16 -> len;
+
+ PutULONG(imageText16 -> drawable, buffer + 4, bigEndian);
+ PutULONG(imageText16 -> gcontext, buffer + 8, bigEndian);
+
+ PutUINT(imageText16 -> x, buffer + 12, bigEndian);
+ PutUINT(imageText16 -> y, buffer + 14, bigEndian);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Unparsed identity for message at " << this << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+void ImageText16Store::dumpIdentity(const Message *message) const
+{
+ #ifdef DUMP
+
+ ImageText16Message *imageText16 = (ImageText16Message *) message;
+
+ *logofs << name() << ": Identity len " << (unsigned int) imageText16 -> len
+ << " drawable " << imageText16 -> drawable << ", gcontext "
+ << imageText16 -> gcontext << ", x " << imageText16 -> x << ", y "
+ << imageText16 -> y << ", size " << imageText16 -> size_ << ".\n";
+
+ #endif
+}
+
+void ImageText16Store::identityChecksum(const Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ md5_append(md5_state_, buffer + 1, 1);
+}
+
+void ImageText16Store::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
+ const Message *cachedMessage,
+ ChannelCache *channelCache) const
+{
+ ImageText16Message *imageText16 = (ImageText16Message *) message;
+ ImageText16Message *cachedImageText16 = (ImageText16Message *) cachedMessage;
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << imageText16 -> drawable
+ << " as " << "drawable" << " field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeXidValue(imageText16 -> drawable, clientCache -> drawableCache);
+
+ cachedImageText16 -> drawable = imageText16 -> drawable;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << imageText16 -> gcontext
+ << " as " << "gcontext" << " field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeXidValue(imageText16 -> gcontext, clientCache -> gcCache);
+
+ cachedImageText16 -> gcontext = imageText16 -> gcontext;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << imageText16 -> x
+ << " as " << "x" << " field.\n" << logofs_flush;
+ #endif
+
+ unsigned short int diff_x = imageText16 -> x - cachedImageText16 -> x;
+
+ encodeBuffer.encodeCachedValue(diff_x, 16,
+ clientCache -> imageTextCacheX);
+
+ cachedImageText16 -> x = imageText16 -> x;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << imageText16 -> y
+ << " as " << "y" << " field.\n" << logofs_flush;
+ #endif
+
+ unsigned short int diff_y = imageText16 -> y - cachedImageText16 -> y;
+
+ encodeBuffer.encodeCachedValue(diff_y, 16,
+ clientCache -> imageTextCacheY);
+
+ cachedImageText16 -> y = imageText16 -> y;
+}
+
+void ImageText16Store::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
+ ChannelCache *channelCache) const
+{
+ ImageText16Message *imageText16 = (ImageText16Message *) message;
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ unsigned int value;
+
+ decodeBuffer.decodeXidValue(value, clientCache -> drawableCache);
+
+ imageText16 -> drawable = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << imageText16 -> drawable
+ << " as " << "drawable" << " field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeXidValue(value, clientCache -> gcCache);
+
+ imageText16 -> gcontext = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << imageText16 -> gcontext
+ << " as gcontext field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> imageTextCacheX);
+
+ imageText16 -> x += value;
+ imageText16 -> x &= 0xffff;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << imageText16 -> x
+ << " as x field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> imageTextCacheY);
+
+ imageText16 -> y += value;
+ imageText16 -> y &= 0xffff;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << imageText16 -> y
+ << " as y field.\n" << logofs_flush;
+ #endif
+}
+
+