KviDnsResolverNew.h

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#ifndef _KviDnsResolver_h_
#define _KviDnsResolver_h_
//=============================================================================
//
//   File : KviDnsResolver.h
//   Creation date : Sat Jul 21 2000 13:59:11 by Szymon Stefanek
//
//   This file is part of the KVIrc IRC client distribution
//   Copyright (C) 2000-2010 Szymon Stefanek (pragma at kvirc dot net)
//
//   This program 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 2
//   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, write to the Free Software Foundation,
//   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
//=============================================================================

// This is a nicely working DNS resolver that uses the QHostInfo interface
// and thus gets rid of all the ugly OS dependencies we have.
// It should be sufficient to rename this file and use this class
// instead of the old KviDnsResolver.

// However at present time (04.01.2010) QHostInfo doesn't seem to support
// IPv6. Despite the documentation saying that IPv6 addresses are supported
// the query performed by QHostInfo::lookupHost() asks only for the A record.
//
// Check it again with newer Qt versions and verify.

#include "kvi_settings.h"

#include <KviError.h> // FIXME: Get rid of this at all..
#include <KviPointerList.h>

#include <QObject>

class KviDnsResolverPrivate;

class QHostInfo;

class KVILIB_API KviDnsResolver : public QObject
{
        Q_OBJECT

public:
        KviDnsResolver(QObject * pParent = NULL);

        virtual ~KviDnsResolver();

public:
        enum QueryType
        {
                IPv4,
                IPv6,
                Any
        };

        enum State
        {
                Idle,
                Busy,
                Failure,
                Success
        };

private:
        KviDnsResolverPrivate * m_pPrivateData;

public:
        State state() const;

        bool lookup(const QString & szQuery, QueryType eType);

        // Results (return always non null-data..but valid results only if state() == Success or Failure)
        KviError::Code error() const; // DEPRECATED use errorString()
        const QString & errorString() const;

        const QString & hostName() const;
        const QString & firstIpAddress();
        int ipAddressCount() const;
        KviPointerList<QString> * ipAddressList();
        const QString & query() const;
        bool isRunning() const;

private slots:
        void slotHostLookupTerminated(const QHostInfo & oHostInfo);

signals:
        void lookupDone(KviDnsResolver *);

}; // class KviDnsResolver

#endif