src/base/bittorrent/portforwarderimpl.cpp

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2019-2022  Vladimir Golovnev <glassez@yandex.ru>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  *
  19  * In addition, as a special exception, the copyright holders give permission to
  20  * link this program with the OpenSSL project's "OpenSSL" library (or with
  21  * modified versions of it that use the same license as the "OpenSSL" library),
  22  * and distribute the linked executables. You must obey the GNU General Public
  23  * License in all respects for all of the code used other than "OpenSSL".  If you
  24  * modify file(s), you may extend this exception to your version of the file(s),
  25  * but you are not obligated to do so. If you do not wish to do so, delete this
  26  * exception statement from your version.
  27  */
  28
  29 #include "portforwarderimpl.h"
  30
  31 #include <utility>
  32
  33 #include "base/bittorrent/sessionimpl.h"
  34
  35 PortForwarderImpl::PortForwarderImpl(BitTorrent::SessionImpl *provider, QObject *parent)
  36     : Net::PortForwarder(parent)
  37     , m_storeActive {u"Network/PortForwardingEnabled"_qs, true}
  38     , m_provider {provider}
  39 {
  40     if (isEnabled())
  41         start();
  42 }
  43
  44 PortForwarderImpl::~PortForwarderImpl()
  45 {
  46     stop();
  47 }
  48
  49 bool PortForwarderImpl::isEnabled() const
  50 {
  51     return m_storeActive;
  52 }
  53
  54 void PortForwarderImpl::setEnabled(const bool enabled)
  55 {
  56     if (m_storeActive == enabled)
  57         return;
  58
  59     if (enabled)
  60         start();
  61     else
  62         stop();
  63     m_storeActive = enabled;
  64 }
  65
  66 void PortForwarderImpl::setPorts(const QString &profile, QSet<quint16> ports)
  67 {
  68     const QSet<quint16> oldForwardedPorts = std::accumulate(m_portProfiles.cbegin(), m_portProfiles.cend(), QSet<quint16>());
  69
  70     m_portProfiles[profile] = ports;
  71     const QSet<quint16> newForwardedPorts = std::accumulate(m_portProfiles.cbegin(), m_portProfiles.cend(), QSet<quint16>());
  72
  73     m_provider->removeMappedPorts(oldForwardedPorts - newForwardedPorts);
  74     m_provider->addMappedPorts(newForwardedPorts - oldForwardedPorts);
  75 }
  76
  77 void PortForwarderImpl::removePorts(const QString &profile)
  78 {
  79     setPorts(profile, {});
  80 }
  81
  82 void PortForwarderImpl::start()
  83 {
  84     m_provider->enablePortMapping();
  85     for (const QSet<quint16> &ports : asConst(m_portProfiles))
  86         m_provider->addMappedPorts(ports);
  87 }
  88
  89 void PortForwarderImpl::stop()
  90 {
  91     m_provider->disablePortMapping();
  92 }