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/**************************************************************************/
/* */
/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
/* Copyright (c) 2008-2017 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
/* Copyright (c) 2014-2022 Ulrich Sibiller <uli42@gmx.de> */
/* Copyright (c) 2014-2019 Mihai Moldovan <ionic@ionic.de> */
/* Copyright (c) 2011-2022 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. */
/* */
/**************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ConfigureWindow.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 ConfigureWindowStore::parseIdentity(Message *message, const unsigned char *buffer,
unsigned int size, int bigEndian) const
{
ConfigureWindowMessage *configureWindow = (ConfigureWindowMessage *) message;
//
// Here is the fingerprint.
//
configureWindow -> window = GetULONG(buffer + 4, bigEndian);
configureWindow -> value_mask = GetUINT(buffer + 8, bigEndian);
//
// To increase effectiveness of the caching algorithm
// we remove the unused bytes carried in the data part.
//
if ((int) size > dataOffset)
{
#ifdef DEBUG
*logofs << name() << ": Removing unused bytes from the data payload.\n" << logofs_flush;
#endif
configureWindow -> value_mask &= (1 << 7) - 1;
unsigned int mask = 0x1;
unsigned char *source = (unsigned char *) buffer + CONFIGUREWINDOW_DATA_OFFSET;
unsigned long value = 0;
for (unsigned int i = 0; i < 7; i++)
{
if (configureWindow -> value_mask & mask)
{
value = GetULONG(source, bigEndian);
value &= (1 << CONFIGUREWINDOW_FIELD_WIDTH[i]) - 1;
PutULONG(value, source, bigEndian);
source += 4;
}
mask <<= 1;
}
}
#ifdef DEBUG
*logofs << name() << ": Parsed Identity for message at " << this << ".\n" << logofs_flush;
#endif
return 1;
}
int ConfigureWindowStore::unparseIdentity(const Message *message, unsigned char *buffer,
unsigned int size, int bigEndian) const
{
ConfigureWindowMessage *configureWindow = (ConfigureWindowMessage *) message;
//
// Fill all the message's fields.
//
PutULONG(configureWindow -> window, buffer + 4, bigEndian);
PutUINT(configureWindow -> value_mask, buffer + 8, bigEndian);
#ifdef DEBUG
*logofs << name() << ": Unparsed identity for message at " << this << ".\n" << logofs_flush;
#endif
return 1;
}
void ConfigureWindowStore::dumpIdentity(const Message *message) const
{
#ifdef DUMP
ConfigureWindowMessage *configureWindow = (ConfigureWindowMessage *) message;
*logofs << "ConfigureWindow: window " << configureWindow -> window
<< ", value_mask " << configureWindow -> value_mask
<< ", size " << configureWindow -> size_ << ".\n";
#endif
}
void ConfigureWindowStore::identityChecksum(const Message *message, const unsigned char *buffer,
unsigned int size, int bigEndian) const
{
md5_append(md5_state_, buffer + 4, 4);
md5_append(md5_state_, buffer + 8, 2);
}
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