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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. */
/* */
/**************************************************************************/
#include "ChangeProperty.h"
#include "ClientCache.h"
#include "EncodeBuffer.h"
#include "DecodeBuffer.h"
//
// Set the verbosity level.
//
#define PANIC
#define WARNING
#undef TEST
#undef DEBUG
#undef DUMP
//
// Here are the methods to handle messages' content.
//
int ChangePropertyStore::parseIdentity(Message *message, const unsigned char *buffer,
unsigned int size, int bigEndian) const
{
ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
changeProperty -> mode = *(buffer + 1);
changeProperty -> format = *(buffer + 16);
changeProperty -> window = GetULONG(buffer + 4, bigEndian);
changeProperty -> property = GetULONG(buffer + 8, bigEndian);
changeProperty -> type = GetULONG(buffer + 12, bigEndian);
changeProperty -> length = GetULONG(buffer + 20, bigEndian);
//
// Cleanup the padding bytes.
//
unsigned int uiFormat;
unsigned int uiLengthInBytes;
if ((int) size > CHANGEPROPERTY_DATA_OFFSET)
{
uiFormat = *(buffer + 16);
uiLengthInBytes = changeProperty -> length;
#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) + CHANGEPROPERTY_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 ChangePropertyStore::unparseIdentity(const Message *message, unsigned char *buffer,
unsigned int size, int bigEndian) const
{
ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
*(buffer + 1) = changeProperty -> mode;
*(buffer + 16) = changeProperty -> format;
PutULONG(changeProperty -> window, buffer + 4, bigEndian);
PutULONG(changeProperty -> property, buffer + 8, bigEndian);
PutULONG(changeProperty -> type, buffer + 12, bigEndian);
PutULONG(changeProperty -> length, buffer + 20, bigEndian);
#ifdef DEBUG
*logofs << name() << ": Unparsed identity for message at "
<< this << ".\n" << logofs_flush;
#endif
return 1;
}
void ChangePropertyStore::dumpIdentity(const Message *message) const
{
#ifdef DUMP
ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
*logofs << name() << ": Identity mode " << (unsigned int) changeProperty -> mode << ", format "
<< (unsigned int) changeProperty -> format << ", window " << changeProperty -> window
<< ", property " << changeProperty -> property << ", type " << changeProperty -> type
<< ", length " << changeProperty -> length << ", size " << changeProperty -> size_
<< ".\n" << logofs_flush;
#endif
}
void ChangePropertyStore::identityChecksum(const Message *message, const unsigned char *buffer,
unsigned int size, int bigEndian) const
{
md5_append(md5_state_, buffer + 1, 1);
md5_append(md5_state_, buffer + 16, 1);
md5_append(md5_state_, buffer + 8, 4);
md5_append(md5_state_, buffer + 12, 4);
md5_append(md5_state_, buffer + 20, 4);
}
void ChangePropertyStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
const Message *cachedMessage,
ChannelCache *channelCache) const
{
ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
ChangePropertyMessage *cachedChangeProperty = (ChangePropertyMessage *) cachedMessage;
ClientCache *clientCache = (ClientCache *) channelCache;
#ifdef TEST
*logofs << name() << ": Encoding value " << changeProperty -> window
<< " as window field.\n" << logofs_flush;
#endif
encodeBuffer.encodeXidValue(changeProperty -> window, clientCache -> windowCache);
cachedChangeProperty -> window = changeProperty -> window;
}
void ChangePropertyStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
ChannelCache *channelCache) const
{
ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
ClientCache *clientCache = (ClientCache *) channelCache;
unsigned int value;
decodeBuffer.decodeXidValue(value, clientCache -> windowCache);
changeProperty -> window = value;
#ifdef DEBUG
*logofs << name() << ": Decoded value " << changeProperty -> window
<< " as window field.\n" << logofs_flush;
#endif
}
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