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/**************************************************************************/
/* */
/* Copyright (c) 2001, 2009 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
}
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