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, 257 insertions, 0 deletions

diff --git a/nxcomp/SetUnpackAlpha.cpp b/nxcomp/SetUnpackAlpha.cpp
new file mode 100755
index 000000000..febc96d57
--- /dev/null
+++ b/nxcomp/SetUnpackAlpha.cpp
@@ -0,0 +1,257 @@
+/**************************************************************************/
+/*                                                                        */
+/* 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 "SetUnpackAlpha.h"
+
+#include "ClientCache.h"
+
+#include "EncodeBuffer.h"
+#include "DecodeBuffer.h"
+
+#include "WriteBuffer.h"
+
+//
+// Set the verbosity level.
+//
+
+#define PANIC
+#define WARNING
+#undef  TEST
+#undef  DEBUG
+#undef  DUMP
+
+//
+// Constructors and destructors.
+//
+
+SetUnpackAlphaStore::SetUnpackAlphaStore(StaticCompressor *compressor)
+
+  : MessageStore(compressor)
+{
+  enableCache    = SETUNPACKALPHA_ENABLE_CACHE;
+  enableData     = SETUNPACKALPHA_ENABLE_DATA;
+  enableSplit    = SETUNPACKALPHA_ENABLE_SPLIT_IF_PROTO_STEP_7;
+  enableCompress = SETUNPACKALPHA_ENABLE_COMPRESS_IF_PROTO_STEP_7;
+
+  dataLimit  = SETUNPACKALPHA_DATA_LIMIT;
+  dataOffset = SETUNPACKALPHA_DATA_OFFSET_IF_PROTO_STEP_7;
+
+  cacheSlots          = SETUNPACKALPHA_CACHE_SLOTS;
+  cacheThreshold      = SETUNPACKALPHA_CACHE_THRESHOLD;
+  cacheLowerThreshold = SETUNPACKALPHA_CACHE_LOWER_THRESHOLD;
+
+  if (control -> isProtoStep8() == 1)
+  {
+    enableSplit = SETUNPACKALPHA_ENABLE_SPLIT_IF_PROTO_STEP_8;
+  }
+
+  messages_ -> resize(cacheSlots);
+
+  for (T_messages::iterator i = messages_ -> begin();
+           i < messages_ -> end(); i++)
+  {
+    *i = NULL;
+  }
+
+  temporary_ = NULL;
+}
+
+SetUnpackAlphaStore::~SetUnpackAlphaStore()
+{
+  for (T_messages::iterator i = messages_ -> begin();
+           i < messages_ -> end(); i++)
+  {
+    destroy(*i);
+  }
+
+  destroy(temporary_);
+}
+
+//
+// Here are the methods to handle messages' content.
+//
+
+int SetUnpackAlphaStore::encodeIdentity(EncodeBuffer &encodeBuffer, const unsigned char *buffer,
+                                            const unsigned int size, int bigEndian,
+                                                ChannelCache *channelCache) const
+{
+  ClientCache *clientCache = (ClientCache *) channelCache;
+
+  #ifdef DEBUG
+  *logofs << name() << ": Encoding full message identity.\n" << logofs_flush;
+  #endif
+
+  //
+  // Encode the source length first because
+  // we need it to determine the size of
+  // the output buffer.
+  //
+
+  // SrcLength.
+  encodeBuffer.encodeValue(GetULONG(buffer + 8, bigEndian), 32, 9);
+
+  // Client.
+  encodeBuffer.encodeCachedValue(*(buffer + 1), 8,
+                     clientCache -> resourceCache);
+  // Method.
+  encodeBuffer.encodeCachedValue(*(buffer + 4), 8,
+                     clientCache -> methodCache);
+  // DstLength.
+  encodeBuffer.encodeValue(GetULONG(buffer + 12, bigEndian), 32, 9);
+
+  #ifdef DEBUG
+  *logofs << name() << ": Encoded full message identity.\n" << logofs_flush;
+  #endif
+
+  return 1;
+}
+
+int SetUnpackAlphaStore::decodeIdentity(DecodeBuffer &decodeBuffer, unsigned char *&buffer,
+                                            unsigned int &size, int bigEndian, WriteBuffer *writeBuffer,
+                                                ChannelCache *channelCache) const
+{
+  ClientCache *clientCache = (ClientCache *) channelCache;
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoding full message identity.\n" << logofs_flush;
+  #endif
+
+  unsigned int  value;
+  unsigned char cValue;
+
+  // SrcLength.
+  decodeBuffer.decodeValue(value, 32, 9);
+
+  size = RoundUp4(value) + 16;
+
+  buffer = writeBuffer -> addMessage(size);
+
+  PutULONG(value, buffer + 8, bigEndian);
+
+  // Client.
+  decodeBuffer.decodeCachedValue(cValue, 8,
+                     clientCache -> resourceCache);
+
+  *(buffer + 1) = cValue;
+
+  // Method.
+  decodeBuffer.decodeCachedValue(cValue, 8,
+                     clientCache -> methodCache);
+
+  *(buffer + 4) = cValue;
+
+  // DstLength.
+  decodeBuffer.decodeValue(value, 32, 9);
+
+  PutULONG(value, buffer + 12, bigEndian);
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoded full message identity.\n" << logofs_flush;
+  #endif
+
+  return 1;
+}
+
+int SetUnpackAlphaStore::parseIdentity(Message *message, const unsigned char *buffer,
+                                           unsigned int size, int bigEndian) const
+{
+  SetUnpackAlphaMessage *setUnpackAlpha = (SetUnpackAlphaMessage *) message;
+
+  setUnpackAlpha -> client = *(buffer + 1);
+  setUnpackAlpha -> method = *(buffer + 4);
+
+  setUnpackAlpha -> src_length = GetULONG(buffer + 8, bigEndian);
+  setUnpackAlpha -> dst_length = GetULONG(buffer + 12, bigEndian);
+
+  #ifdef DEBUG
+  *logofs << name() << ": Parsed identity for message at " << message << ".\n" << logofs_flush;
+  #endif
+
+  return 1;
+}
+
+int SetUnpackAlphaStore::unparseIdentity(const Message *message, unsigned char *buffer,
+                                             unsigned int size, int bigEndian) const
+{
+  SetUnpackAlphaMessage *setUnpackAlpha = (SetUnpackAlphaMessage *) message;
+
+  *(buffer + 1) = setUnpackAlpha -> client;
+  *(buffer + 4) = setUnpackAlpha -> method;
+
+  PutULONG(setUnpackAlpha -> src_length, buffer + 8,  bigEndian);
+  PutULONG(setUnpackAlpha -> dst_length, buffer + 12, bigEndian);
+
+  #ifdef DEBUG
+  *logofs << name() << ": Unparsed identity for message at " << message << ".\n" << logofs_flush;
+  #endif
+
+  return 1;
+}
+
+void SetUnpackAlphaStore::dumpIdentity(const Message *message) const
+{
+  #ifdef DUMP
+
+  SetUnpackAlphaMessage *setUnpackAlpha = (SetUnpackAlphaMessage *) message;
+
+  *logofs << name() << ": Identity client "
+          << (unsigned int) setUnpackAlpha -> client << " method "
+          << (unsigned int) setUnpackAlpha -> method << " source length "
+          << setUnpackAlpha -> src_length << " destination length "
+          << setUnpackAlpha -> dst_length << " size "
+          << setUnpackAlpha -> size_ << ".\n";
+
+  #endif
+}
+
+void SetUnpackAlphaStore::identityChecksum(const Message *message, const unsigned char *buffer,
+                                               unsigned int size, int bigEndian) const
+{
+  //
+  // Include the pack method and the source
+  // and destination length.
+  //
+
+  md5_append(md5_state_, buffer + 4, 1);
+  md5_append(md5_state_, buffer + 8, 8);
+}
+
+void SetUnpackAlphaStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
+                                             const Message *cachedMessage,
+                                                 ChannelCache *channelCache) const
+{
+  SetUnpackAlphaMessage *setUnpackAlpha       = (SetUnpackAlphaMessage *) message;
+  SetUnpackAlphaMessage *cachedSetUnpackAlpha = (SetUnpackAlphaMessage *) cachedMessage;
+
+  ClientCache *clientCache = (ClientCache *) channelCache;
+
+  encodeBuffer.encodeCachedValue(setUnpackAlpha -> client, 8,
+                     clientCache -> resourceCache);
+
+  cachedSetUnpackAlpha -> client = setUnpackAlpha -> client;
+}
+
+void SetUnpackAlphaStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
+                                             ChannelCache *channelCache) const
+{
+  SetUnpackAlphaMessage *setUnpackAlpha = (SetUnpackAlphaMessage *) message;
+
+  ClientCache *clientCache = (ClientCache *) channelCache;
+
+  decodeBuffer.decodeCachedValue(setUnpackAlpha -> client, 8,
+                     clientCache -> resourceCache);
+}