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110 lines
2.9 KiB
110 lines
2.9 KiB
/*
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Kopete Oscar Protocol
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snacprotocol.cpp - reads the protocol used by Oscar for signalling stuff
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Copyright (c) 2004 Matt Rogers <mattr@kde.org>
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Based on code copyright (c) 2004 SUSE Linux AG <http://www.suse.com>
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Kopete (c) 2002-2004 by the Kopete developers <kopete-devel@kde.org>
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*************************************************************************
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Lesser General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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*************************************************************************
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*/
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#include "snacprotocol.h"
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#include <tqcstring.h>
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#include <tqdatastream.h>
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#include <tqobject.h>
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#include <kdebug.h>
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#include <stdlib.h>
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#include "transfer.h"
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using namespace Oscar;
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SnacProtocol::SnacProtocol(TQObject *parent, const char *name)
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: InputProtocolBase(parent, name)
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{
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}
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SnacProtocol::~SnacProtocol()
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{
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}
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Transfer* SnacProtocol::parse( const TQByteArray & packet, uint& bytes )
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{
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BYTE b;
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WORD w;
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DWORD dw;
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FLAP f;
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SNAC s;
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SnacTransfer *st;
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TQDataStream* m_din = new TQDataStream( packet, IO_ReadOnly );
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//flap parsing
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*m_din >> b; //this should be the start byte
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//kdDebug(OSCAR_RAW_DEBUG) << k_funcinfo << "start byte is " << b << endl;
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*m_din >> b;
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f.channel = b;
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*m_din >> w;
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f.sequence = w;
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*m_din >> w;
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f.length = w;
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if ( ( f.length + 6 ) > packet.size() )
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{
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kdDebug(OSCAR_RAW_DEBUG) << k_funcinfo << "Packet not big enough to parse!" << endl;
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kdDebug(OSCAR_RAW_DEBUG) << k_funcinfo << "packet size is " << packet.size()
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<< " we need " << f.length + 6 << endl;
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return 0;
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}
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//snac parsing
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*m_din >> w;
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s.family = w;
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*m_din >> w;
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s.subtype = w;
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*m_din >> w;
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s.flags = w;
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*m_din >> dw;
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s.id = dw;
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kdDebug(OSCAR_RAW_DEBUG) << k_funcinfo << "family: " << s.family
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<< " subtype: " << s.subtype << " flags: " << s.flags
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<< " id: " << s.id << endl;
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//use pointer arithmatic to skip the flap and snac headers
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//so we don't have to do double parsing in the tasks
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char* charPacket = const_cast<char*>(packet.data());
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char* snacData;
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int snacOffset = 10; //default
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if ( s.flags >= 0x8000 ) //skip the next 8 bytes, we don't care about the snac version ATM
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{
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//kdDebug(OSCAR_RAW_DEBUG) << k_funcinfo << "skipping snac version" << endl;
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snacOffset = 18;
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snacData = charPacket + 24;
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}
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else
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{
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snacOffset = 10;
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snacData = charPacket + 16;
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}
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Buffer *snacBuffer = new Buffer( snacData, f.length - snacOffset );
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st = new SnacTransfer( f, s, snacBuffer );
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bytes = f.length + 6;
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delete m_din;
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m_din = 0;
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return st;
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}
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#include "snacprotocol.moc"
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