ostinato/common/llc.cpp

/*
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/>
*/

#include <qendian.h>
#include <QHostAddress>

#include "llc.h"

LlcConfigForm::LlcConfigForm(QWidget *parent)
    : QWidget(parent)
{
    setupUi(this);
}

LlcProtocol::LlcProtocol(StreamBase *stream, AbstractProtocol *parent)
    : AbstractProtocol(stream, parent)
{
    configForm = NULL;
}

LlcProtocol::~LlcProtocol()
{
    delete configForm;
}

AbstractProtocol* LlcProtocol::createInstance(StreamBase *stream,
    AbstractProtocol *parent)
{
    return new LlcProtocol(stream, parent);
}

quint32 LlcProtocol::protocolNumber() const
{
    return OstProto::Protocol::kLlcFieldNumber;
}

void LlcProtocol::protoDataCopyInto(OstProto::Protocol &protocol) const
{
    protocol.MutableExtension(OstProto::llc)->CopyFrom(data);
    protocol.mutable_protocol_id()->set_id(protocolNumber());
}

void LlcProtocol::protoDataCopyFrom(const OstProto::Protocol &protocol)
{
    if (protocol.protocol_id().id() == protocolNumber() &&
            protocol.HasExtension(OstProto::llc))
        data.MergeFrom(protocol.GetExtension(OstProto::llc));
}

QString LlcProtocol::name() const
{
    return QString("802.3 Logical Link Control");
}

QString LlcProtocol::shortName() const
{
    return QString("LLC");
}

AbstractProtocol::ProtocolIdType LlcProtocol::protocolIdType() const
{
    return ProtocolIdLlc;
}

int    LlcProtocol::fieldCount() const
{
    return llc_fieldCount;
}

QVariant LlcProtocol::fieldData(int index, FieldAttrib attrib,
        int streamIndex) const
{
    quint32 id;
    quint8 dsap, ssap, ctl;

    id = payloadProtocolId(ProtocolIdLlc);
    dsap = (id >> 16) & 0xFF;
    ssap = (id >> 8) & 0xFF;
    ctl  = (id >> 0) & 0xFF;

    switch (index)
    {
        case llc_dsap:
            switch(attrib)
            {
                case FieldName:            
                    return QString("DSAP");
                case FieldValue:
                    return dsap;
                case FieldTextValue:
                    return QString("%1").arg(dsap, 2, BASE_HEX, QChar('0'));
                case FieldFrameValue:
                    return QByteArray(1, (char)(dsap));
                default:
                    break;
            }
            break;
        case llc_ssap:
            switch(attrib)
            {
                case FieldName:            
                    return QString("SSAP");
                case FieldValue:
                    return ssap;
                case FieldTextValue:
                    return QString("%1").arg(ssap, 2, BASE_HEX, QChar('0'));
                case FieldFrameValue:
                    return QByteArray(1, (char)(ssap));
                default:
                    break;
            }
            break;
        case llc_ctl:
            switch(attrib)
            {
                case FieldName:            
                    return QString("Control");
                case FieldValue:
                    return ctl;
                case FieldTextValue:
                    return QString("%1").arg(ctl, 2, BASE_HEX, QChar('0'));
                case FieldFrameValue:
                    return QByteArray(1, (char)(ctl));
                default:
                    break;
            }
            break;

        default:
            break;
    }

    return AbstractProtocol::fieldData(index, attrib, streamIndex);
}

bool LlcProtocol::setFieldData(int /*index*/, const QVariant &/*value*/, 
        FieldAttrib /*attrib*/)
{
    return false;
}


QWidget* LlcProtocol::configWidget()
{
    if (configForm == NULL)
    {
        configForm = new LlcConfigForm;
        loadConfigWidget();
    }
    return configForm;
}

void LlcProtocol::loadConfigWidget()
{
#define uintToHexStr(num, bytes)    \
    QString("%1").arg(num, bytes*2, BASE_HEX, QChar('0'))

    configWidget();

    configForm->leDsap->setText(uintToHexStr(
        fieldData(llc_dsap, FieldValue).toUInt(), 1));
    configForm->leSsap->setText(uintToHexStr(
        fieldData(llc_ssap, FieldValue).toUInt(), 1));
    configForm->leControl->setText(uintToHexStr(
        fieldData(llc_ctl, FieldValue).toUInt(), 1));
#undef uintToHexStr
}

void LlcProtocol::storeConfigWidget()
{
    bool isOk;

    configWidget();

    data.set_dsap(configForm->leDsap->text().toULong(&isOk, BASE_HEX));
    data.set_ssap(configForm->leSsap->text().toULong(&isOk, BASE_HEX));
    data.set_ctl(configForm->leControl->text().toULong(&isOk, BASE_HEX));
}