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//=============================================================================
//
// File : KviDnsResolverNew.cpp
// Creation date : Sat Jul 21 2000 17:19:31 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.
//
//=============================================================================
#include "KviDnsResolver.h"
#include "KviLocale.h"
#include "kvi_debug.h"
#include <QHostInfo>
#include <QString>
class KviDnsResolverPrivate
{
public:
int iHostLookupId;
KviDnsResolver::State eState;
KviDnsResolver::QueryType eQueryType;
KviError::Code eError; // DEPRECATED
QString szError;
QString szQuery;
QString szHostName;
QString szDummy;
KviPointerList<QString> * pAddressList;
};
KviDnsResolver::KviDnsResolver(QObject * pParent)
: QObject(pParent)
{
m_pPrivateData = new KviDnsResolverPrivate;
m_pPrivateData->eState = Idle;
m_pPrivateData->pAddressList = new KviPointerList<QString>(true);
}
KviDnsResolver::~KviDnsResolver()
{
if(m_pPrivateData->eState == Busy)
QHostInfo::abortHostLookup(m_pPrivateData->iHostLookupId);
delete m_pPrivateData->pAddressList;
delete m_pPrivateData;
}
KviDnsResolver::State KviDnsResolver::state() const
{
return m_pPrivateData->eState;
}
bool KviDnsResolver::lookup(const QString & szQuery, QueryType eType)
{
if(m_pPrivateData->eState == Busy)
{
m_pPrivateData->eError = KviError::DNSQueryFailed;
m_pPrivateData->eState = Failure;
m_pPrivateData->szError = __tr2qs("DNS resolver busy");
return false;
}
m_pPrivateData->eQueryType = eType;
m_pPrivateData->eState = Busy;
m_pPrivateData->szQuery = szQuery;
m_pPrivateData->iHostLookupId = QHostInfo::lookupHost(szQuery, this, SLOT(slotHostLookupTerminated(const QHostInfo &)));
if(m_pPrivateData->iHostLookupId < 0)
{
m_pPrivateData->eError = KviError::DNSQueryFailed;
m_pPrivateData->eState = Failure;
m_pPrivateData->szError = __tr2qs("Failed to start the host lookup");
//emit lookupDone(this);
return false;
}
return true;
}
void KviDnsResolver::slotHostLookupTerminated(const QHostInfo & oHostInfo)
{
if(oHostInfo.error() != QHostInfo::NoError)
{
m_pPrivateData->eState = Failure;
switch(oHostInfo.error())
{
case QHostInfo::HostNotFound:
m_pPrivateData->eError = KviError::HostNotFound;
break;
default:
m_pPrivateData->eError = KviError::DNSQueryFailed;
break;
}
m_pPrivateData->szError = oHostInfo.errorString();
emit lookupDone(this);
return;
}
m_pPrivateData->szHostName = oHostInfo.hostName();
QList<QHostAddress> lAddresses = oHostInfo.addresses();
m_pPrivateData->pAddressList->clear();
m_pPrivateData->eError = KviError::Success;
m_pPrivateData->szError = QString();
m_pPrivateData->eState = Success;
foreach(QHostAddress oAddress, lAddresses)
{
switch(m_pPrivateData->eQueryType)
{
case IPv4:
if(oAddress.protocol() == QAbstractSocket::IPv4Protocol)
m_pPrivateData->pAddressList->append(new QString(oAddress.toString()));
break;
case IPv6:
if(oAddress.protocol() == QAbstractSocket::IPv6Protocol)
m_pPrivateData->pAddressList->append(new QString(oAddress.toString()));
break;
case Any:
m_pPrivateData->pAddressList->append(new QString(oAddress.toString()));
break;
default:
KVI_ASSERT_MSG(false, "Invalid DNS query type!");
m_pPrivateData->eState = Failure;
m_pPrivateData->eError = KviError::InternalError;
m_pPrivateData->szError = __tr2qs("Internal error: unhandled DNS query type");
emit lookupDone(this);
return;
break;
}
}
if(m_pPrivateData->pAddressList->isEmpty())
{
m_pPrivateData->eState = Failure;
m_pPrivateData->eError = KviError::ValidNameButNoIpAddress;
m_pPrivateData->szError = __tr2qs("DNS query returned no IP address results of the requested type");
}
emit lookupDone(this);
}
KviError::Code KviDnsResolver::error() const
{
return m_pPrivateData->eError;
}
const QString & KviDnsResolver::errorString() const
{
return m_pPrivateData->szError;
}
const QString & KviDnsResolver::hostName() const
{
return m_pPrivateData->szHostName;
}
const QString & KviDnsResolver::firstIpAddress()
{
QString * pIpAddress = m_pPrivateData->pAddressList->first();
if(!pIpAddress)
return m_pPrivateData->szDummy;
return *pIpAddress;
}
const QString & firstIpAddress();
int KviDnsResolver::ipAddressCount() const
{
return m_pPrivateData->pAddressList->count();
}
KviPointerList<QString> * KviDnsResolver::ipAddressList()
{
return m_pPrivateData->pAddressList;
}
const QString & KviDnsResolver::query() const
{
return m_pPrivateData->szQuery;
}
bool KviDnsResolver::isRunning() const
{
return m_pPrivateData->eState == Busy;
}
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