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Diffstat (limited to 'nxcomp/GetPropertyReply.cpp')
| -rw-r--r-- | nxcomp/GetPropertyReply.cpp | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/nxcomp/GetPropertyReply.cpp b/nxcomp/GetPropertyReply.cpp new file mode 100644 index 000000000..223131803 --- /dev/null +++ b/nxcomp/GetPropertyReply.cpp @@ -0,0 +1,295 @@ +/**************************************************************************/ +/* */ +/* 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 "GetPropertyReply.h" + +#include "ServerCache.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. +// + +GetPropertyReplyStore::GetPropertyReplyStore(StaticCompressor *compressor) + + : MessageStore(compressor) +{ + enableCache = GETPROPERTYREPLY_ENABLE_CACHE; + enableData = GETPROPERTYREPLY_ENABLE_DATA; + enableSplit = GETPROPERTYREPLY_ENABLE_SPLIT; + enableCompress = GETPROPERTYREPLY_ENABLE_COMPRESS; + + if (control -> isProtoStep7() == 1) + { + enableCompress = GETPROPERTYREPLY_ENABLE_COMPRESS_IF_PROTO_STEP_7; + } + + dataLimit = GETPROPERTYREPLY_DATA_LIMIT; + dataOffset = GETPROPERTYREPLY_DATA_OFFSET; + + cacheSlots = GETPROPERTYREPLY_CACHE_SLOTS; + cacheThreshold = GETPROPERTYREPLY_CACHE_THRESHOLD; + cacheLowerThreshold = GETPROPERTYREPLY_CACHE_LOWER_THRESHOLD; + + messages_ -> resize(cacheSlots); + + for (T_messages::iterator i = messages_ -> begin(); + i < messages_ -> end(); i++) + { + *i = NULL; + } + + temporary_ = NULL; +} + +GetPropertyReplyStore::~GetPropertyReplyStore() +{ + for (T_messages::iterator i = messages_ -> begin(); + i < messages_ -> end(); i++) + { + destroy(*i); + } + + destroy(temporary_); +} + +// +// Here are the methods to handle messages' content. +// + +int GetPropertyReplyStore::encodeIdentity(EncodeBuffer &encodeBuffer, const unsigned char *buffer, + const unsigned int size, int bigEndian, + ChannelCache *channelCache) const +{ + ServerCache *serverCache = (ServerCache *) channelCache; + + #ifdef DEBUG + *logofs << name() << ": Encoding full message identity.\n" + << logofs_flush; + #endif + + unsigned char format = (unsigned int) *(buffer + 1); + + encodeBuffer.encodeCachedValue(format, 8, + serverCache -> getPropertyFormatCache); + + unsigned int numBytes = GetULONG(buffer + 16, bigEndian); + + encodeBuffer.encodeValue(numBytes, 32, 9); + + if (format == 16) + { + numBytes <<= 1; + } + else if (format == 32) + { + numBytes <<= 2; + } + + encodeBuffer.encodeCachedValue(GetULONG(buffer + 8, bigEndian), 29, + serverCache -> getPropertyTypeCache, 9); + + encodeBuffer.encodeValue(GetULONG(buffer + 12, bigEndian), 32, 9); + + #ifdef DEBUG + *logofs << name() << ": Encoded full message identity.\n" + << logofs_flush; + #endif + + return 1; +} + +int GetPropertyReplyStore::decodeIdentity(DecodeBuffer &decodeBuffer, unsigned char *&buffer, + unsigned int &size, int bigEndian, WriteBuffer *writeBuffer, + ChannelCache *channelCache) const +{ + ServerCache *serverCache = (ServerCache *) channelCache; + + #ifdef DEBUG + *logofs << name() << ": Decoding full message identity.\n" + << logofs_flush; + #endif + + unsigned char format; + + decodeBuffer.decodeCachedValue(format, 8, + serverCache -> getPropertyFormatCache); + + unsigned int length; + + decodeBuffer.decodeValue(length, 32, 9); + + unsigned int numBytes = length; + + if (format == 16) + { + numBytes <<= 1; + } + else if (format == 32) + { + numBytes <<= 2; + } + + size = 32 + RoundUp4(numBytes); + + buffer = writeBuffer -> addMessage(size); + + *(buffer + 1) = format; + + PutULONG(length, buffer + 16, bigEndian); + + unsigned int value; + + decodeBuffer.decodeCachedValue(value, 29, + serverCache -> getPropertyTypeCache, 9); + + PutULONG(value, buffer + 8, bigEndian); + + 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 GetPropertyReplyStore::parseIdentity(Message *message, const unsigned char *buffer, + unsigned int size, int bigEndian) const +{ + GetPropertyReplyMessage *getPropertyReply = (GetPropertyReplyMessage *) message; + + getPropertyReply -> format = *(buffer + 1); + + getPropertyReply -> type = GetULONG(buffer + 8, bigEndian); + getPropertyReply -> after = GetULONG(buffer + 12, bigEndian); + getPropertyReply -> items = GetULONG(buffer + 16, bigEndian); + + // + // Cleanup the padding bytes. + // + + unsigned int uiLengthInBytes; + unsigned int uiFormat; + + if ((int) size > GETPROPERTYREPLY_DATA_OFFSET) + { + uiLengthInBytes = getPropertyReply -> items; + + uiFormat = *(buffer + 1); + + #ifdef DEBUG + *logofs << name() << ": length " << uiLengthInBytes + << ", format " << uiFormat << ", size " + << size << ".\n" << logofs_flush; + #endif + + if (uiFormat == 16) + { + uiLengthInBytes <<= 1; + } + else if (uiFormat == 32) + { + uiLengthInBytes <<= 2; + } + + unsigned char *end = ((unsigned char *) buffer) + size; + unsigned char *pad = ((unsigned char *) buffer) + GETPROPERTYREPLY_DATA_OFFSET + uiLengthInBytes; + + CleanData((unsigned char *) pad, end - pad); + } + + #ifdef DEBUG + *logofs << name() << ": Parsed identity for message at " + << message << ".\n" << logofs_flush; + #endif + + return 1; +} + +int GetPropertyReplyStore::unparseIdentity(const Message *message, unsigned char *buffer, + unsigned int size, int bigEndian) const +{ + GetPropertyReplyMessage *getPropertyReply = (GetPropertyReplyMessage *) message; + + *(buffer + 1) = getPropertyReply -> format; + + PutULONG(getPropertyReply -> type, buffer + 8, bigEndian); + PutULONG(getPropertyReply -> after, buffer + 12, bigEndian); + PutULONG(getPropertyReply -> items, buffer + 16, bigEndian); + + #ifdef DEBUG + *logofs << name() << ": Unparsed identity for message at " + << message << ".\n" << logofs_flush; + #endif + + return 1; +} + +void GetPropertyReplyStore::dumpIdentity(const Message *message) const +{ + #ifdef DUMP + + GetPropertyReplyMessage *getPropertyReply = (GetPropertyReplyMessage *) message; + + *logofs << name() << ": Identity format " + << (unsigned) getPropertyReply -> format << ", type " + << getPropertyReply -> type << ", after " << getPropertyReply -> after + << ", items " << getPropertyReply -> items << ", size " + << getPropertyReply -> size_ << ".\n"; + + #endif +} + +void GetPropertyReplyStore::identityChecksum(const Message *message, const unsigned char *buffer, + unsigned int size, int bigEndian) const +{ + // + // Fields format, type, after, items. + // + + md5_append(md5_state_, buffer + 1, 1); + md5_append(md5_state_, buffer + 8, 12); +} + +void GetPropertyReplyStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message, + const Message *cachedMessage, + ChannelCache *channelCache) const +{ +} + +void GetPropertyReplyStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message, + ChannelCache *channelCache) const +{ +} |