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-rw-r--r--nxcomp/src/SetUnpackAlpha.cpp266
1 files changed, 266 insertions, 0 deletions
diff --git a/nxcomp/src/SetUnpackAlpha.cpp b/nxcomp/src/SetUnpackAlpha.cpp
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+++ b/nxcomp/src/SetUnpackAlpha.cpp
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+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
+/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
+/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */
+/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */
+/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
+/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */
+/* */
+/* NXCOMP, NX protocol compression and NX extensions to this software */
+/* are copyright of the aforementioned persons and companies. */
+/* */
+/* Redistribution and use of the present software is allowed according */
+/* to terms specified in the file LICENSE.nxcomp which comes in the */
+/* source distribution. */
+/* */
+/* All rights reserved. */
+/* */
+/* NOTE: This software has received contributions from various other */
+/* contributors, only the core maintainers and supporters are listed as */
+/* copyright holders. Please contact us, if you feel you should be listed */
+/* as copyright holder, as well. */
+/* */
+/**************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#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;
+ 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;
+
+ // Since ProtoStep8 (#issue 108)
+ 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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-03 02:32:58 +0000