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, 130 insertions, 0 deletions

diff --git a/nxcomp/ConfigureWindow.cpp b/nxcomp/ConfigureWindow.cpp
new file mode 100755
index 000000000..8b16a03cd
--- /dev/null
+++ b/nxcomp/ConfigureWindow.cpp
@@ -0,0 +1,130 @@
+/**************************************************************************/
+/*                                                                        */
+/* 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 "ConfigureWindow.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 ConfigureWindowStore::parseIdentity(Message *message, const unsigned char *buffer,
+                                            unsigned int size, int bigEndian) const
+{
+  ConfigureWindowMessage *configureWindow = (ConfigureWindowMessage *) message;
+
+  //
+  // Here is the fingerprint.
+  //
+
+  configureWindow -> window = GetULONG(buffer + 4, bigEndian); 
+
+  configureWindow -> value_mask = GetUINT(buffer + 8, bigEndian);
+
+  //
+  // To increase effectiveness of the caching algorithm 
+  // we remove the unused bytes carried in the data part.
+  //
+
+  if ((int) size > dataOffset)
+  {
+    #ifdef DEBUG
+    *logofs << name() << ": Removing unused bytes from the data payload.\n" << logofs_flush;
+    #endif
+
+    configureWindow -> value_mask &= (1 << 7) - 1;
+
+    unsigned int mask = 0x1;
+    unsigned char *source = (unsigned char *) buffer + CONFIGUREWINDOW_DATA_OFFSET;
+    unsigned long value = 0;
+
+    for (unsigned int i = 0; i < 7; i++)
+    {
+      if (configureWindow -> value_mask & mask)
+      {
+        value = GetULONG(source, bigEndian);
+
+        value &= (1 << CONFIGUREWINDOW_FIELD_WIDTH[i]) - 1;
+
+        PutULONG(value, source, bigEndian);
+
+        source += 4;
+      }
+      mask <<= 1;
+    }
+  }
+
+  #ifdef DEBUG
+  *logofs << name() << ": Parsed Identity for message at " << this << ".\n" << logofs_flush;
+  #endif
+
+  return 1;
+}
+
+int ConfigureWindowStore::unparseIdentity(const Message *message, unsigned char *buffer,
+                                              unsigned int size, int bigEndian) const
+{
+  ConfigureWindowMessage *configureWindow = (ConfigureWindowMessage *) message;
+
+  //
+  // Fill all the message's fields.
+  //
+
+  PutULONG(configureWindow -> window, buffer + 4, bigEndian);
+
+  PutUINT(configureWindow -> value_mask, buffer + 8, bigEndian);
+
+  #ifdef DEBUG
+  *logofs << name() << ": Unparsed identity for message at " << this << ".\n" << logofs_flush;
+  #endif
+
+  return 1;
+}
+
+void ConfigureWindowStore::dumpIdentity(const Message *message) const
+{
+  #ifdef DUMP
+
+  ConfigureWindowMessage *configureWindow = (ConfigureWindowMessage *) message;
+
+  *logofs << "ConfigureWindow: window " << configureWindow -> window  
+          << ", value_mask " << configureWindow -> value_mask
+          << ", size " << configureWindow -> size_ << ".\n";
+
+  #endif
+}
+
+void ConfigureWindowStore::identityChecksum(const Message *message, const unsigned char *buffer,
+                                                unsigned int size, int bigEndian) const
+{
+  md5_append(md5_state_, buffer + 4, 4);
+  md5_append(md5_state_, buffer + 8, 2);
+}