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-rw-r--r--nxcomp/ChangeProperty.cpp179
1 files changed, 179 insertions, 0 deletions
diff --git a/nxcomp/ChangeProperty.cpp b/nxcomp/ChangeProperty.cpp
new file mode 100644
index 000000000..0270d7274
--- /dev/null
+++ b/nxcomp/ChangeProperty.cpp
@@ -0,0 +1,179 @@
+/**************************************************************************/
+/* */
+/* 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 "ChangeProperty.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 ChangePropertyStore::parseIdentity(Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
+
+ changeProperty -> mode = *(buffer + 1);
+ changeProperty -> format = *(buffer + 16);
+
+ changeProperty -> window = GetULONG(buffer + 4, bigEndian);
+ changeProperty -> property = GetULONG(buffer + 8, bigEndian);
+ changeProperty -> type = GetULONG(buffer + 12, bigEndian);
+ changeProperty -> length = GetULONG(buffer + 20, bigEndian);
+
+ //
+ // Cleanup the padding bytes.
+ //
+
+ unsigned int uiFormat;
+ unsigned int uiLengthInBytes;
+
+ if ((int) size > CHANGEPROPERTY_DATA_OFFSET)
+ {
+ uiFormat = *(buffer + 16);
+
+ uiLengthInBytes = changeProperty -> length;
+
+ #ifdef DEBUG
+ *logofs << name() << ": length " << uiLengthInBytes
+ << ", format " << uiFormat << ", size "
+ << size << ".\n" << logofs_flush;
+ #endif
+
+ if (uiFormat == 16)
+ {
+ uiLengthInBytes <<= 1;
+ }
+ else if (uiFormat == 32)
+ {
+ uiLengthInBytes <<= 2;
+ }
+
+ unsigned char *end = ((unsigned char *) buffer) + size;
+ unsigned char *pad = ((unsigned char *) buffer) + CHANGEPROPERTY_DATA_OFFSET + uiLengthInBytes;
+
+ CleanData((unsigned char *) pad, end - pad);
+ }
+
+ #ifdef DEBUG
+ *logofs << name() << ": Parsed identity for message at "
+ << message << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+int ChangePropertyStore::unparseIdentity(const Message *message, unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
+
+ *(buffer + 1) = changeProperty -> mode;
+ *(buffer + 16) = changeProperty -> format;
+
+ PutULONG(changeProperty -> window, buffer + 4, bigEndian);
+ PutULONG(changeProperty -> property, buffer + 8, bigEndian);
+ PutULONG(changeProperty -> type, buffer + 12, bigEndian);
+ PutULONG(changeProperty -> length, buffer + 20, bigEndian);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Unparsed identity for message at "
+ << this << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+void ChangePropertyStore::dumpIdentity(const Message *message) const
+{
+ #ifdef DUMP
+
+ ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
+
+ *logofs << name() << ": Identity mode " << (unsigned int) changeProperty -> mode << ", format "
+ << (unsigned int) changeProperty -> format << ", window " << changeProperty -> window
+ << ", property " << changeProperty -> property << ", type " << changeProperty -> type
+ << ", length " << changeProperty -> length << ", size " << changeProperty -> size_
+ << ".\n" << logofs_flush;
+
+ #endif
+}
+
+void ChangePropertyStore::identityChecksum(const Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ md5_append(md5_state_, buffer + 1, 1);
+ md5_append(md5_state_, buffer + 16, 1);
+
+ md5_append(md5_state_, buffer + 8, 4);
+ md5_append(md5_state_, buffer + 12, 4);
+ md5_append(md5_state_, buffer + 20, 4);
+}
+
+void ChangePropertyStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
+ const Message *cachedMessage,
+ ChannelCache *channelCache) const
+{
+ ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
+ ChangePropertyMessage *cachedChangeProperty = (ChangePropertyMessage *) cachedMessage;
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << changeProperty -> window
+ << " as window field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeXidValue(changeProperty -> window, clientCache -> windowCache);
+
+ cachedChangeProperty -> window = changeProperty -> window;
+}
+
+void ChangePropertyStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
+ ChannelCache *channelCache) const
+{
+ ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ unsigned int value;
+
+ decodeBuffer.decodeXidValue(value, clientCache -> windowCache);
+
+ changeProperty -> window = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << changeProperty -> window
+ << " as window field.\n" << logofs_flush;
+ #endif
+}
+
+