1 files changed, 292 insertions, 0 deletions
diff --git a/nxcomp/SendEvent.cpp b/nxcomp/SendEvent.cpp
new file mode 100755
index 000000000..9daf99f23
--- /dev/null
+++ b/nxcomp/SendEvent.cpp
@@ -0,0 +1,292 @@
+/**************************************************************************/
+/*                                                                        */
+/* 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 "SendEvent.h"
+
+#include "ClientCache.h"
+
+#include "EncodeBuffer.h"
+#include "DecodeBuffer.h"
+
+#include "IntCache.h"
+
+//
+// Set the verbosity level.
+//
+
+#define PANIC
+#define WARNING
+#undef  TEST
+#undef  DEBUG
+#undef  DUMP
+
+//
+// Here are the methods to handle messages' content.
+//
+
+int SendEventStore::parseIdentity(Message *message, const unsigned char *buffer,
+                                      unsigned int size, int bigEndian) const
+{
+  SendEventMessage *sendEvent = (SendEventMessage *) message;
+
+  //
+  // Here is the fingerprint.
+  //
+
+  sendEvent -> propagate = *(buffer + 1);
+
+  sendEvent -> window = GetULONG(buffer + 4, bigEndian);
+  sendEvent -> mask   = GetULONG(buffer + 8, bigEndian);
+
+  sendEvent -> code      = *(buffer + 12);
+  sendEvent -> byte_data = *(buffer + 13);
+
+  sendEvent -> sequence = GetUINT(buffer + 14, bigEndian);
+
+  sendEvent -> int_data = GetULONG(buffer + 16, bigEndian);
+
+  #ifdef DEBUG
+  *logofs << name() << ": Parsed Identity for message at "
+           << this << ".\n" << logofs_flush;
+  #endif
+
+  return 1;
+}
+
+int SendEventStore::unparseIdentity(const Message *message, unsigned char *buffer,
+                                        unsigned int size, int bigEndian) const
+{
+  SendEventMessage *sendEvent = (SendEventMessage *) message;
+
+  //
+  // Fill all the message's fields.
+  //
+
+  *(buffer + 1) = sendEvent -> propagate;
+
+  PutULONG(sendEvent -> window, buffer + 4,  bigEndian);
+  PutULONG(sendEvent -> mask,   buffer + 8,  bigEndian);
+
+  *(buffer + 12) = sendEvent -> code;
+  *(buffer + 13) = sendEvent -> byte_data;
+
+  PutUINT(sendEvent -> sequence, buffer + 14, bigEndian);
+
+  PutULONG(sendEvent -> int_data, buffer + 16, bigEndian);
+
+  #ifdef DEBUG
+  *logofs << name() << ": Unparsed identity for message at "
+          << this << ".\n" << logofs_flush;
+  #endif
+
+  return 1;
+}
+
+void SendEventStore::dumpIdentity(const Message *message) const
+{
+  #ifdef DUMP
+
+  SendEventMessage *sendEvent = (SendEventMessage *) message;
+
+  *logofs << name() << ": Identity propagate " << (unsigned int) sendEvent -> propagate 
+          << ", window " << sendEvent -> window << ", mask " << sendEvent -> mask
+          << ", code " << (unsigned int) sendEvent -> code << ", byte_data "
+          << (unsigned int) sendEvent -> byte_data << ", sequence "
+          << sendEvent -> sequence << ", int_data " << sendEvent -> int_data 
+          << ", size " << sendEvent -> size_ << ".\n" << logofs_flush;
+
+  #endif
+}
+
+void SendEventStore::identityChecksum(const Message *message, const unsigned char *buffer,
+                                          unsigned int size, int bigEndian) const
+{
+}
+
+void SendEventStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
+                                        const Message *cachedMessage,
+                                            ChannelCache *channelCache) const
+{
+  SendEventMessage *sendEvent       = (SendEventMessage *) message;
+  SendEventMessage *cachedSendEvent = (SendEventMessage *) cachedMessage;
+
+  ClientCache *clientCache = (ClientCache *) channelCache;
+
+  #ifdef TEST
+  *logofs << name() << ": Encoding value " << (unsigned int) sendEvent -> propagate
+          << " as propagate field.\n" << logofs_flush;
+  #endif
+
+  encodeBuffer.encodeBoolValue(sendEvent -> propagate);
+
+  cachedSendEvent -> propagate = sendEvent -> propagate;
+
+  #ifdef TEST
+  *logofs << name() << ": Encoding value " << sendEvent -> window
+          << " as window field.\n" << logofs_flush;
+  #endif
+
+  if (sendEvent -> window == 0 || sendEvent -> window == 1)
+  {
+    encodeBuffer.encodeBoolValue(1);
+
+    encodeBuffer.encodeBoolValue(sendEvent -> window);
+  }
+  else
+  {
+    encodeBuffer.encodeBoolValue(0);
+
+    encodeBuffer.encodeXidValue(sendEvent -> window, clientCache -> windowCache);
+  }
+
+  cachedSendEvent -> window = sendEvent -> window;
+
+  #ifdef TEST
+  *logofs << name() << ": Encoding value " << sendEvent -> mask
+          << " as mask field.\n" << logofs_flush;
+  #endif
+
+  encodeBuffer.encodeCachedValue(sendEvent -> mask, 32,
+                     clientCache -> sendEventMaskCache);
+
+  cachedSendEvent -> mask = sendEvent -> mask;
+
+  #ifdef TEST
+  *logofs << name() << ": Encoding value " << sendEvent -> code
+          << " as code field.\n" << logofs_flush;
+  #endif
+
+  encodeBuffer.encodeCachedValue(sendEvent -> code, 8, 
+                     clientCache -> sendEventCodeCache);
+
+  cachedSendEvent -> code = sendEvent -> code;
+
+  #ifdef TEST
+  *logofs << name() << ": Encoding value " << sendEvent -> byte_data
+          << " as byte_data field.\n" << logofs_flush;
+  #endif
+
+  encodeBuffer.encodeCachedValue(sendEvent -> byte_data, 8, 
+                     clientCache -> sendEventByteDataCache);
+
+  cachedSendEvent -> byte_data = sendEvent -> byte_data;
+
+  #ifdef TEST
+  *logofs << name() << ": Encoding value " << sendEvent -> sequence
+          << " as sequence field.\n" << logofs_flush;
+  #endif
+
+  unsigned int diffSeq = sendEvent -> sequence -
+                             clientCache -> sendEventLastSequence;
+
+  clientCache -> sendEventLastSequence = sendEvent -> sequence;
+
+  encodeBuffer.encodeValue(diffSeq, 16, 4);
+
+  cachedSendEvent -> sequence = sendEvent -> sequence;
+
+  #ifdef TEST
+  *logofs << name() << ": Encoding value " << sendEvent -> int_data
+          << " as int_data field.\n" << logofs_flush;
+  #endif
+
+  encodeBuffer.encodeCachedValue(sendEvent -> int_data, 32,
+                     clientCache -> sendEventIntDataCache);
+
+  cachedSendEvent -> int_data = sendEvent -> int_data;
+}
+
+void SendEventStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
+                                        ChannelCache *channelCache) const
+{
+  SendEventMessage *sendEvent = (SendEventMessage *) message;
+
+  ClientCache *clientCache = (ClientCache *) channelCache;
+
+  unsigned int  value;
+
+  decodeBuffer.decodeBoolValue(value);
+
+  sendEvent -> propagate = value;
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoded value " << (unsigned int) sendEvent -> propagate
+          << " as propagate field.\n" << logofs_flush;
+  #endif
+
+  decodeBuffer.decodeBoolValue(value);
+
+  if (value)
+  {
+    decodeBuffer.decodeBoolValue(value);
+  }
+  else
+  {
+    decodeBuffer.decodeXidValue(value, clientCache -> windowCache);
+  }
+
+  sendEvent -> window = value;
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoded value " << sendEvent -> window
+          << " as window field.\n" << logofs_flush;
+  #endif
+
+  decodeBuffer.decodeCachedValue(sendEvent -> mask, 32,
+                     clientCache -> sendEventMaskCache);
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoded value " << sendEvent -> mask
+          << " as mask field.\n" << logofs_flush;
+  #endif
+
+  decodeBuffer.decodeCachedValue(sendEvent -> code, 8,
+                     clientCache -> sendEventCodeCache);
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoded value " << sendEvent -> code
+          << " as code field.\n" << logofs_flush;
+  #endif
+
+  decodeBuffer.decodeCachedValue(sendEvent -> byte_data, 8,
+                     clientCache -> sendEventByteDataCache);
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoded value " << sendEvent -> byte_data
+          << " as byte_data field.\n" << logofs_flush;
+  #endif
+
+  decodeBuffer.decodeValue(value, 16, 4);
+
+  clientCache -> sendEventLastSequence += value;
+  clientCache -> sendEventLastSequence &= 0xffff;
+
+  sendEvent -> sequence = clientCache -> sendEventLastSequence;
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoded value " << sendEvent -> sequence
+          << " as sequence field.\n" << logofs_flush;
+  #endif
+
+  decodeBuffer.decodeCachedValue(sendEvent -> int_data, 32,
+                     clientCache -> sendEventIntDataCache);
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoded value " << sendEvent -> int_data
+          << " as int_data field.\n" << logofs_flush;
+  #endif
+}