aboutsummaryrefslogtreecommitdiff
path: root/nxcomp/src/PolyText8.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'nxcomp/src/PolyText8.cpp')
-rw-r--r--nxcomp/src/PolyText8.cpp310
1 files changed, 310 insertions, 0 deletions
diff --git a/nxcomp/src/PolyText8.cpp b/nxcomp/src/PolyText8.cpp
new file mode 100644
index 000000000..61fef5a4f
--- /dev/null
+++ b/nxcomp/src/PolyText8.cpp
@@ -0,0 +1,310 @@
+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
+/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
+/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */
+/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */
+/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
+/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */
+/* */
+/* NXCOMP, NX protocol compression and NX extensions to this software */
+/* are copyright of the aforementioned persons and companies. */
+/* */
+/* Redistribution and use of the present software is allowed according */
+/* to terms specified in the file LICENSE.nxcomp which comes in the */
+/* source distribution. */
+/* */
+/* All rights reserved. */
+/* */
+/* NOTE: This software has received contributions from various other */
+/* contributors, only the core maintainers and supporters are listed as */
+/* copyright holders. Please contact us, if you feel you should be listed */
+/* as copyright holder, as well. */
+/* */
+/**************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "PolyText8.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 PolyText8Store::parseIdentity(Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ PolyText8Message *polyText8 = (PolyText8Message *) message;
+
+ //
+ // Here is the fingerprint.
+ //
+
+ polyText8 -> drawable = GetULONG(buffer + 4, bigEndian);
+ polyText8 -> gcontext = GetULONG(buffer + 8, bigEndian);
+
+ polyText8 -> x = GetUINT(buffer + 12, bigEndian);
+ polyText8 -> y = GetUINT(buffer + 14, bigEndian);
+
+ //
+ // Clean up padding bytes.
+ //
+
+ #ifdef DUMP
+
+ DumpData(buffer, size);
+
+ *logofs << "\n\n" << logofs_flush;
+
+ #endif
+
+ if ((int) size > dataOffset)
+ {
+ int length;
+ int current;
+ int delta;
+ int item;
+
+ unsigned int nitem;
+
+ unsigned char *pad = NULL;
+ unsigned char *end = NULL;
+
+ delta = 1;
+ nitem = 0;
+
+ #ifdef DUMP
+ *logofs << name() << " Size " << size << ".\n" << logofs_flush;
+ #endif
+
+ //
+ // Data is a list of TextItem where element
+ // can be a string or a font shift.
+ //
+
+ current = POLYTEXT8_DATA_OFFSET;
+ length = POLYTEXT8_DATA_OFFSET;
+
+ do
+ {
+ #ifdef DUMP
+ *logofs << name() << " Current " << current << ".\n" << logofs_flush;
+ #endif
+
+ item = GetUINT(buffer + length , bigEndian);
+
+ if (item < 255)
+ {
+ //
+ // Text element. Number represents
+ // the 'Length of string' field.
+ //
+
+ length += (item + delta + 1);
+
+ nitem++;
+ }
+ else if (item == 255)
+ {
+ //
+ // Element is a font shift.
+ //
+
+ length += 5;
+
+ nitem++;
+ }
+
+ #ifdef DUMP
+ *logofs << name() << " Item " << item << ".\n" << logofs_flush;
+ #endif
+
+ current += length;
+ }
+ while(current < (int) size && item != 0);
+
+
+ #ifdef DUMP
+ *logofs << name() << " Final length " << length << ".\n" << logofs_flush;
+ #endif
+
+ end = ((unsigned char *) buffer) + size;
+
+ pad = ((unsigned char *) buffer) + length;
+
+ for (; pad < end && nitem >= 1; pad++)
+ {
+ #ifdef DUMP
+ *logofs << name() << " Padding " << " .\n" << logofs_flush;
+ #endif
+
+ *pad = 0;
+ }
+ }
+
+ #ifdef DEBUG
+ *logofs << name() << ": Parsed Identity for message at " << this << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+int PolyText8Store::unparseIdentity(const Message *message, unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ PolyText8Message *polyText8 = (PolyText8Message *) message;
+
+ //
+ // Fill all the message's fields.
+ //
+
+ PutULONG(polyText8 -> drawable, buffer + 4, bigEndian);
+ PutULONG(polyText8 -> gcontext, buffer + 8, bigEndian);
+
+ PutUINT(polyText8 -> x, buffer + 12, bigEndian);
+ PutUINT(polyText8 -> y, buffer + 14, bigEndian);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Unparsed identity for message at " << this << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+void PolyText8Store::dumpIdentity(const Message *message) const
+{
+ #ifdef DUMP
+
+ PolyText8Message *polyText8 = (PolyText8Message *) message;
+
+ *logofs << name() << ": Identity drawable " << polyText8 -> drawable
+ << ", gcontext " << polyText8 -> gcontext << ", x " << polyText8 -> x
+ << ", y " << polyText8 -> y << ", size " << polyText8 -> size_
+ << ".\n";
+
+ #endif
+}
+
+void PolyText8Store::identityChecksum(const Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+}
+
+void PolyText8Store::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
+ const Message *cachedMessage,
+ ChannelCache *channelCache) const
+{
+ PolyText8Message *polyText8 = (PolyText8Message *) message;
+ PolyText8Message *cachedPolyText8 = (PolyText8Message *) cachedMessage;
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << polyText8 -> drawable
+ << " as " << "drawable" << " field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeXidValue(polyText8 -> drawable, clientCache -> drawableCache);
+
+ cachedPolyText8 -> drawable = polyText8 -> drawable;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << polyText8 -> gcontext
+ << " as " << "gcontext" << " field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeXidValue(polyText8 -> gcontext, clientCache -> gcCache);
+
+ cachedPolyText8 -> gcontext = polyText8 -> gcontext;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << polyText8 -> x
+ << " as " << "x" << " field.\n" << logofs_flush;
+ #endif
+
+ unsigned short int diff_x = polyText8 -> x - cachedPolyText8 -> x;
+
+ encodeBuffer.encodeCachedValue(diff_x, 16,
+ clientCache -> polyTextCacheX);
+
+ cachedPolyText8 -> x = polyText8 -> x;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << polyText8 -> y
+ << " as " << "y" << " field.\n" << logofs_flush;
+ #endif
+
+ unsigned short int diff_y = polyText8 -> y - cachedPolyText8 -> y;
+
+ encodeBuffer.encodeCachedValue(diff_y, 16,
+ clientCache -> polyTextCacheY);
+
+ cachedPolyText8 -> y = polyText8 -> y;
+}
+
+void PolyText8Store::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
+ ChannelCache *channelCache) const
+{
+ PolyText8Message *polyText8 = (PolyText8Message *) message;
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ unsigned int value;
+
+ decodeBuffer.decodeXidValue(value, clientCache -> drawableCache);
+
+ polyText8 -> drawable = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << polyText8 -> drawable
+ << " as " << "drawable" << " field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeXidValue(value, clientCache -> gcCache);
+
+ polyText8 -> gcontext = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << polyText8 -> gcontext
+ << " as gcontext field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> polyTextCacheX);
+
+ polyText8 -> x += value;
+ polyText8 -> x &= 0xffff;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << polyText8 -> x
+ << " as x field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(value, 16,
+ clientCache -> polyTextCacheY);
+
+ polyText8 -> y += value;
+ polyText8 -> y &= 0xffff;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << polyText8 -> y
+ << " as y field.\n" << logofs_flush;
+ #endif
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 16:47:29 +0000