diff options
Diffstat (limited to 'nxcomp/SetUnpackAlphaCompat.cpp')
| -rw-r--r-- | nxcomp/SetUnpackAlphaCompat.cpp | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/nxcomp/SetUnpackAlphaCompat.cpp b/nxcomp/SetUnpackAlphaCompat.cpp new file mode 100644 index 000000000..a8fcabdeb --- /dev/null +++ b/nxcomp/SetUnpackAlphaCompat.cpp @@ -0,0 +1,250 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) 2001, 2010 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 Medialogic S.p.A. */ +/* */ +/* All rights reserved. */ +/* */ +/**************************************************************************/ + +#include "SetUnpackAlphaCompat.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. +// + +SetUnpackAlphaCompatStore::SetUnpackAlphaCompatStore(StaticCompressor *compressor) + + : MessageStore(compressor) +{ + enableCache = SETUNPACKALPHA_ENABLE_CACHE; + enableData = SETUNPACKALPHA_ENABLE_DATA; + enableSplit = SETUNPACKALPHA_ENABLE_SPLIT; + enableCompress = SETUNPACKALPHA_ENABLE_COMPRESS; + + dataLimit = SETUNPACKALPHA_DATA_LIMIT; + dataOffset = SETUNPACKALPHA_DATA_OFFSET; + + cacheSlots = SETUNPACKALPHA_CACHE_SLOTS; + cacheThreshold = SETUNPACKALPHA_CACHE_THRESHOLD; + cacheLowerThreshold = SETUNPACKALPHA_CACHE_LOWER_THRESHOLD; + + messages_ -> resize(cacheSlots); + + for (T_messages::iterator i = messages_ -> begin(); + i < messages_ -> end(); i++) + { + *i = NULL; + } + + temporary_ = NULL; +} + +SetUnpackAlphaCompatStore::~SetUnpackAlphaCompatStore() +{ + for (T_messages::iterator i = messages_ -> begin(); + i < messages_ -> end(); i++) + { + destroy(*i); + } + + destroy(temporary_); +} + +// +// Here are the methods to handle messages' content. +// + +int SetUnpackAlphaCompatStore::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 + + // Client. + encodeBuffer.encodeCachedValue(*(buffer + 1), 8, + clientCache -> resourceCache); + // Entries. + encodeBuffer.encodeValue(GetULONG(buffer + 4, bigEndian), 32, 9); + + #ifdef DEBUG + *logofs << name() << ": Encoded full message identity.\n" << logofs_flush; + #endif + + return 1; +} + +int SetUnpackAlphaCompatStore::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; + + // Client. + decodeBuffer.decodeCachedValue(cValue, 8, + clientCache -> resourceCache); + // Entries. + decodeBuffer.decodeValue(value, 32, 9); + + size = RoundUp4(value) + 8; + + buffer = writeBuffer -> addMessage(size); + + *(buffer + 1) = cValue; + + PutULONG(value, buffer + 4, bigEndian); + + #ifdef DEBUG + *logofs << name() << ": Decoded full message identity.\n" << logofs_flush; + #endif + + return 1; +} + +int SetUnpackAlphaCompatStore::parseIdentity(Message *message, const unsigned char *buffer, + unsigned int size, int bigEndian) const +{ + SetUnpackAlphaCompatMessage *setUnpackAlpha = (SetUnpackAlphaCompatMessage *) message; + + setUnpackAlpha -> client = *(buffer + 1); + + setUnpackAlpha -> entries = GetULONG(buffer + 4, bigEndian); + + #ifdef DEBUG + *logofs << name() << ": Parsed identity for message at " << message << ".\n" << logofs_flush; + #endif + + return 1; +} + +int SetUnpackAlphaCompatStore::unparseIdentity(const Message *message, unsigned char *buffer, + unsigned int size, int bigEndian) const +{ + SetUnpackAlphaCompatMessage *setUnpackAlpha = (SetUnpackAlphaCompatMessage *) message; + + *(buffer + 1) = setUnpackAlpha -> client; + + PutULONG(setUnpackAlpha -> entries, buffer + 4, bigEndian); + + #ifdef DEBUG + *logofs << name() << ": Unparsed identity for message at " << message << ".\n" << logofs_flush; + #endif + + return 1; +} + +void SetUnpackAlphaCompatStore::dumpIdentity(const Message *message) const +{ + #ifdef DUMP + + SetUnpackAlphaCompatMessage *setUnpackAlpha = (SetUnpackAlphaCompatMessage *) message; + + *logofs << name() << ": Identity client " + << (unsigned int) setUnpackAlpha -> client << " entries " + << setUnpackAlpha -> entries << " size " + << setUnpackAlpha -> size_ << ".\n"; + + #endif +} + +void SetUnpackAlphaCompatStore::identityChecksum(const Message *message, const unsigned char *buffer, + unsigned int size, int bigEndian) const +{ + md5_append(md5_state_, buffer + 4, 4); +} + +void SetUnpackAlphaCompatStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message, + const Message *cachedMessage, + ChannelCache *channelCache) const +{ + SetUnpackAlphaCompatMessage *setUnpackAlpha = (SetUnpackAlphaCompatMessage *) message; + SetUnpackAlphaCompatMessage *cachedSetUnpackAlpha = (SetUnpackAlphaCompatMessage *) cachedMessage; + + ClientCache *clientCache = (ClientCache *) channelCache; + + encodeBuffer.encodeCachedValue(setUnpackAlpha -> client, 8, + clientCache -> resourceCache); + + cachedSetUnpackAlpha -> client = setUnpackAlpha -> client; + + if (cachedSetUnpackAlpha -> entries != setUnpackAlpha -> entries) + { + #ifdef TEST + *logofs << name() << ": Encoding value " << setUnpackAlpha -> entries + << " as entries field.\n" << logofs_flush; + #endif + + encodeBuffer.encodeBoolValue(1); + + encodeBuffer.encodeValue(setUnpackAlpha -> entries, 32, 9); + + cachedSetUnpackAlpha -> entries = setUnpackAlpha -> entries; + } + else + { + encodeBuffer.encodeBoolValue(0); + } +} + +void SetUnpackAlphaCompatStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message, + ChannelCache *channelCache) const +{ + SetUnpackAlphaCompatMessage *setUnpackAlpha = (SetUnpackAlphaCompatMessage *) message; + + ClientCache *clientCache = (ClientCache *) channelCache; + + unsigned int value; + + decodeBuffer.decodeCachedValue(setUnpackAlpha -> client, 8, + clientCache -> resourceCache); + + decodeBuffer.decodeBoolValue(value); + + if (value) + { + decodeBuffer.decodeValue(value, 32, 9); + + setUnpackAlpha -> entries = value; + + #ifdef DEBUG + *logofs << name() << ": Decoded value " << setUnpackAlpha -> entries + << " as entries field.\n" << logofs_flush; + #endif + } +} |