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Diffstat (limited to 'nxcomp/RenderGenericRequest.cpp')
| -rw-r--r-- | nxcomp/RenderGenericRequest.cpp | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/nxcomp/RenderGenericRequest.cpp b/nxcomp/RenderGenericRequest.cpp new file mode 100644 index 000000000..4f979c18f --- /dev/null +++ b/nxcomp/RenderGenericRequest.cpp @@ -0,0 +1,258 @@ +/**************************************************************************/ +/* */ +/* 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 "NXrender.h" + +#include "RenderExtension.h" +#include "RenderGenericRequest.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 + +// +// Here are the methods to handle the messages' content. +// + +int RenderGenericRequestStore::encodeMessage(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.\n" + << logofs_flush; + + unsigned char type = *(buffer + 1); + + #endif + + encodeBuffer.encodeCachedValue(size >> 2, 16, + clientCache -> renderLengthCache, 5); + + #ifdef DEBUG + *logofs << name() << ": Encoding full unhandled message. " + << "Type is " << (unsigned int) type << " size is " + << size << ".\n" << logofs_flush; + #endif + + encodeIntData(encodeBuffer, buffer, 4, size, + bigEndian, clientCache); + + #ifdef DEBUG + *logofs << name() << ": Encoded full message.\n" + << logofs_flush; + #endif + + return 1; +} + +int RenderGenericRequestStore::decodeMessage(DecodeBuffer &decodeBuffer, unsigned char *&buffer, + unsigned int &size, unsigned char type, int bigEndian, + WriteBuffer *writeBuffer, ChannelCache *channelCache) const +{ + ClientCache *clientCache = (ClientCache *) channelCache; + + #ifdef DEBUG + *logofs << name() << ": Decoding full message.\n" + << logofs_flush; + #endif + + decodeBuffer.decodeCachedValue(size, 16, + clientCache -> renderLengthCache, 5); + + size <<= 2; + + buffer = writeBuffer -> addMessage(size); + + *(buffer + 1) = type; + + #ifdef DEBUG + *logofs << name() << ": Decoding full unhandled message. " + << "Type is " << (unsigned int) type << " size is " + << size << ".\n" << logofs_flush; + #endif + + decodeIntData(decodeBuffer, buffer, 4, size, + bigEndian, clientCache); + + #ifdef DEBUG + *logofs << name() << ": Decoded full message.\n" + << logofs_flush; + #endif + + return 1; +} + +void RenderGenericRequestStore::encodeData(EncodeBuffer &encodeBuffer, const unsigned char *buffer, + unsigned int size, int bigEndian, + ChannelCache *channelCache) const +{ +} + +void RenderGenericRequestStore::decodeData(DecodeBuffer &decodeBuffer, unsigned char *buffer, + unsigned int size, int bigEndian, + ChannelCache *channelCache) const +{ +} + +int RenderGenericRequestStore::parseIdentity(Message *message, const unsigned char *buffer, + unsigned int size, int bigEndian) const +{ + #ifdef DEBUG + *logofs << name() << ": Parsing identity for message at " + << this << ".\n" << logofs_flush; + #endif + + RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message; + + unsigned char type = *(buffer + 1); + + renderExtension -> data.any.type = type; + + #ifdef DEBUG + *logofs << name() << ": Parsing unhandled identity. " + << "Type is " << (unsigned int) renderExtension -> data.any.type + << " size is " << renderExtension -> size_ << ".\n" + << logofs_flush; + #endif + + parseIntData(message, buffer, 4, size, bigEndian); + + #ifdef DEBUG + *logofs << name() << ": Parsed identity for message at " + << this << ".\n" << logofs_flush; + #endif + + return 1; +} + +int RenderGenericRequestStore::unparseIdentity(const Message *message, unsigned char *buffer, + unsigned int size, int bigEndian) const +{ + #ifdef DEBUG + *logofs << name() << ": Unparsing identity for message at " + << this << ".\n" << logofs_flush; + #endif + + RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message; + + unsigned char type = renderExtension -> data.any.type; + + *(buffer + 1) = type; + + #ifdef DEBUG + *logofs << name() << ": Unparsing unhandled identity. " + << "Type is " << (unsigned int) renderExtension -> data.any.type + << " size is " << renderExtension -> size_ << ".\n" + << logofs_flush; + #endif + + unparseIntData(message, buffer, 4, size, bigEndian); + + #ifdef DEBUG + *logofs << name() << ": Unparsed identity for message at " + << this << ".\n" << logofs_flush; + #endif + + return 1; +} + +void RenderGenericRequestStore::identityChecksum(const Message *message, const unsigned char *buffer, + unsigned int size, md5_state_t *md5_state, + int bigEndian) const +{ + // + // Include the minor opcode in the checksum. + // Because the data offset can be beyond the + // real end of the message, we need to include + // the size or we will match any message whose + // size is less or equal to the data offset. + // + + md5_append(md5_state, buffer + 1, 3); +} + +void RenderGenericRequestStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message, + const Message *cachedMessage, + ChannelCache *channelCache) const +{ + // + // Encode the variant part. + // + + #ifdef DEBUG + *logofs << name() << ": Updating identity for message at " + << this << ".\n" << logofs_flush; + #endif + + RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message; + + #ifdef DEBUG + *logofs << name() << ": Encoding unhandled update. " + << "Type is " << (unsigned int) renderExtension -> data.any.type + << " size is " << renderExtension -> size_ << ".\n" + << logofs_flush; + #endif + + updateIntData(encodeBuffer, message, cachedMessage, 4, + renderExtension -> size_, channelCache); + + #ifdef DEBUG + *logofs << name() << ": Updated identity for message at " + << this << ".\n" << logofs_flush; + #endif +} + +void RenderGenericRequestStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message, + ChannelCache *channelCache) const +{ + #ifdef DEBUG + *logofs << name() << ": Updating identity for message at " + << this << ".\n" << logofs_flush; + #endif + + RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message; + + #ifdef DEBUG + *logofs << name() << ": Decoding unhandled update. " + << "Type is " << (unsigned int) renderExtension -> data.any.type + << " size is " << renderExtension -> size_ << ".\n" + << logofs_flush; + #endif + + updateIntData(decodeBuffer, message, 4, + renderExtension -> size_, channelCache); + + #ifdef DEBUG + *logofs << name() << ": Updated identity for message at " + << this << ".\n" << logofs_flush; + #endif +} |