mirror of
https://github.com/qbittorrent/qBittorrent.git
synced 2024-12-16 21:11:50 +03:00
ff9a281b72
Change project directory structure according to application structure. Change 'nox' configuration option to something more meaningful 'nogui'. Rename 'Icons' folder to 'icons' (similar to other folders). Partially add 'nowebui' option support. Remove QConf project file.
105 lines
3.3 KiB
C++
105 lines
3.3 KiB
C++
/*
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* Bittorrent Client using Qt4 and libtorrent.
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* Copyright (C) 2006 Christophe Dumez
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* In addition, as a special exception, the copyright holders give permission to
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* link this program with the OpenSSL project's "OpenSSL" library (or with
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* modified versions of it that use the same license as the "OpenSSL" library),
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* and distribute the linked executables. You must obey the GNU General Public
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* License in all respects for all of the code used other than "OpenSSL". If you
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* modify file(s), you may extend this exception to your version of the file(s),
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* but you are not obligated to do so. If you do not wish to do so, delete this
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* exception statement from your version.
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*
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* Contact : chris@qbittorrent.org
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*/
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#ifndef REVERSERESOLUTION_H
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#define REVERSERESOLUTION_H
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#include <QList>
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#include <QCache>
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#include <QDebug>
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#include <QHostInfo>
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#include "misc.h"
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#include <boost/version.hpp>
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#if BOOST_VERSION < 103500
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#include <libtorrent/asio/ip/tcp.hpp>
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#else
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#include <boost/asio/ip/tcp.hpp>
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#endif
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const int CACHE_SIZE = 500;
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class ReverseResolution: public QObject {
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Q_OBJECT
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Q_DISABLE_COPY(ReverseResolution)
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public:
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explicit ReverseResolution(QObject* parent): QObject(parent) {
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m_cache.setMaxCost(CACHE_SIZE);
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}
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~ReverseResolution() {
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qDebug("Deleting host name resolver...");
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}
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void resolve(const QString &ip) {
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if (m_cache.contains(ip)) {
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const QString& hostname = *m_cache.object(ip);
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qDebug() << "Resolved host name using cache: " << ip << " -> " << hostname;
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if (isUsefulHostName(hostname, ip))
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emit ip_resolved(ip, hostname);
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return;
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}
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// Actually resolve the ip
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m_lookups.insert(QHostInfo::lookupHost(ip, this, SLOT(hostResolved(QHostInfo))), ip);
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}
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signals:
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void ip_resolved(const QString &ip, const QString &hostname);
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private slots:
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void hostResolved(const QHostInfo& host) {
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const QString& ip = m_lookups.take(host.lookupId());
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Q_ASSERT(!ip.isNull());
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if (host.error() != QHostInfo::NoError) {
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qDebug() << "DNS Reverse resolution error: " << host.errorString();
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return;
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}
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const QString& hostname = host.hostName();
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qDebug() << Q_FUNC_INFO << ip << QString("->") << hostname;
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m_cache.insert(ip, new QString(hostname));
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if (isUsefulHostName(hostname, ip))
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emit ip_resolved(ip, hostname);
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}
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private:
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static inline bool isUsefulHostName(const QString& hostname, const QString& ip) {
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return (!hostname.isEmpty() && hostname != ip);
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}
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QHash<int /* LookupID */, QString /* IP */> m_lookups;
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QCache<QString /* IP */, QString /* HostName */> m_cache;
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};
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#endif // REVERSERESOLUTION_H
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