Imported nxcomp-3.1.0-4.tar.gznxcomp/3.1.0-4

Summary: Imported nxcomp-3.1.0-4.tar.gz
Keywords:

Imported nxcomp-3.1.0-4.tar.gz
into Git repository

1 files changed, 179 insertions, 0 deletions

diff --git a/nxcomp/ChangeProperty.cpp b/nxcomp/ChangeProperty.cpp
new file mode 100755
index 000000000..136813fc1
--- /dev/null
+++ b/nxcomp/ChangeProperty.cpp
@@ -0,0 +1,179 @@
+/**************************************************************************/
+/*                                                                        */
+/* 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 "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
+}
+
+