/*
Copyright (C) 2010 Srivats P.

This file is part of "Ostinato"

This is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>
*/

#ifndef _TCP_H
#define _TCP_H

#include "abstractprotocol.h"

#include "tcp.pb.h"

#define TCP_FLAG_URG    0x20
#define TCP_FLAG_ACK    0x10
#define TCP_FLAG_PSH    0x08
#define TCP_FLAG_RST    0x04
#define TCP_FLAG_SYN    0x02
#define TCP_FLAG_FIN    0x01

class TcpProtocol : public AbstractProtocol
{
public:
    enum tcpfield
    {
        tcp_src_port = 0,
        tcp_dst_port,
        tcp_seq_num,
        tcp_ack_num,
        tcp_hdrlen,
        tcp_rsvd,
        tcp_flags,
        tcp_window,
        tcp_cksum,
        tcp_urg_ptr,

        tcp_is_override_src_port,
        tcp_is_override_dst_port,
        tcp_is_override_hdrlen,
        tcp_is_override_cksum,

        tcp_fieldCount
    };

    TcpProtocol(StreamBase *stream, AbstractProtocol *parent = 0);
    virtual ~TcpProtocol();

    static AbstractProtocol* createInstance(StreamBase *stream,
        AbstractProtocol *parent = 0);
    virtual quint32 protocolNumber() const;

    virtual void protoDataCopyInto(OstProto::Protocol &protocol) const;
    virtual void protoDataCopyFrom(const OstProto::Protocol &protocol);

    virtual QString name() const;
    virtual QString shortName() const;

    virtual ProtocolIdType protocolIdType() const;
    virtual quint32 protocolId(ProtocolIdType type) const;

    virtual int fieldCount() const;

    virtual AbstractProtocol::FieldFlags fieldFlags(int index) const;
    virtual QVariant fieldData(int index, FieldAttrib attrib,
               int streamIndex = 0) const;
    virtual bool setFieldData(int index, const QVariant &value, 
            FieldAttrib attrib = FieldValue);

    virtual bool isProtocolFrameValueVariable() const;
    virtual int protocolFrameVariableCount() const;

private:
    OstProto::Tcp    data;
};

#endif